自卸车概述-外文文献

附录AZLJ16 arm type garbage truck from the loading and unloadingWith economic development, expanding cities, urban population growth, rapid increase inthe amount of municipal waste, its handling more and more attention. Municipal solid wastedisposal methods There are three forms: separation and recycling, incineration and landfill.Either approach, the final disposal sites need to be far away from urban areas. Garbage transfer vehicles on a day to play with thousands of tons of solid waste transported from the city away from the urban area ofwastedisposal plant of the taskZLJ16 arm type garbage from the transfer car is a car loading and unloading, container transport separate waste collection vehicles, mainly for medium and large municipal solid waste collection and transport, which is complete with municipal solid waste transfer equipment installed supporting the use of waste pressure products. Loose garbage installed by the pressure of compressed garbage, the volume greatly reduced, and then packing transport, can effectively improve the transfer efficiency.ZLJ arm type garbage truck from the loading and unloading from the vehicle chassis, handling systems, and trash from the three major components.1 ChassisSteyr 1491.280/043/6x4 using two types of truck chassis, repair and exchange of good performance. The maximum total level of road quality 3.2t, the maximum speed of 85km / h. According to user needs can choose other common chassis.2 Self-priming systemSince the loading and unloading system for loading along the telescopic arm, hydraulic drive, hydraulic system pressure is 32MPa. The use of hydraulic control proportional control (cab) and direct manipulation (outside the cab) two kinds of control methods. Self-handling system installed by the subframe on the car chassis beam. Since the handling system can be reversed with a scalable two boxes "L" shape, and telescopic boom lift cylinders and telescopic cylinders, the rear frame above the cylinder, Vice beam with a stable, to improve the whole vehicle longitudinal stability.The car handling system from the power take-way for transmission at the end to take power.3 garbage containersZLJ16 arm type garbage truck from the loading bin is configured with the "A" shaped frame to enhance a special garbage container. DIN standard size using the interface. Outside the box welded trapezoidal ribs. There are two bins lower welding according to DIN standard vertical rails and durable, and compatible rear wheel bearing on both sides can achieve a smooth effortless loading and unloading bins. Trash back with automatic and manual opening and closing of the lift arm door.ZLJ16 arm type garbage truck garbage from loading and unloading containers from the loading and unloading process is as follows:Lifting garbage containers, the first manipulation of telescopic cylinders, the telescopic arm stretched out to the "L" shaped hook telescopic arm just below the height of the rings garbage containers, the appropriate garbage container reverse hook to hook rings. Continue to manipulate the lift cylinder, the bottom of the garbage container guide rail into the rear wheel, the rotating around the guide rollers, so that full retraction of cylinder in place lifting Post, garbage container on the frame in the horizontal position. And then manipulate the telescopic cylinder, telescopic reach out to, will forward to the tray at the bottom of the container rails on the lock block hit the frame on the locking hook up. Then manipulate the stabilizer, its piston rod fully recovered. Thus the lifting operation is complete garbage container.Remove trash containers and hoisting operation sequence in reverse order.Self-loading vehicle ZLJ arm in addition to complete self-loading garbage containers and garbage dump, but also can be carried out within a certain range of the lifting operation. In addition to the car with the unique retractable telescopic cylinder, lift cylinder, lock cylinder in order to complete the action of loading and unloading containers and garbage dump operations, but also can implement other vehicles for rescue and self-help. The car handling system can be rated in the 40s to complete the loading or loading garbage container operations in the 60s in the rubbish bin rubbish dump clean.ZLJ arm type garbage truck from the loading and unloading using an advanced hydraulic system, hydraulic control proportional control, work stable and reliablemanipulation of effort, simple, micro-performance is good.附录BZLJ16摆臂式自装卸垃圾车随着经济的发展，城市规模不断扩大，城市人口不断快速增长，城市垃圾量急剧上升，其处理越来越受到重视。

附录附录A外文文献原文Dump structure, principle and introduce the fuel tankMainly by the hydraulic dump truck dump bodies, cars, and its annexes constitute the frame. Hydraulic dump them inside the structure of institutions and manufacturers in various different modifications, the following compartments and the lifting mechanism in accordance with the pattern of the two aspects of the structure of that dump truck.1、compartment typeNode compartments by use of different body types can be broadly divided into: general rectangular bucket compartment and inside mineOrdinary rectangular compartments for the carriage of goods in bulk. Plate with subsequent automatic opening and closing of institutions, to ensure smooth unloading of goods. Ordinary rectangular compartment thickness as follows: pre-board 4 to 6mm, side panels 4 to 8mm, after the board 5 to 8mm, floor 6to 12mm.Inside bucket mining is applicable to a larger particle size, such as large stones of goods in transit. Taking into account the impact of goods and touch buildings, mining bucket inside the design of more complex shape, with thicker material. Models and some welding in the floor on a number of angles in order to increase stiffness and impact-car capacity.2、lifting body typeDump truck lifting mechanism is the core of the primary advantages and disadvantages of discriminant indicators truck. Type lifting mechanism common current: F-type lifting mechanism to enlarge tripod, T-style tripod lifting mechanism to enlarge, double lift, the former top-lift and double rollover.Enlarge tripod-type lifting mechanism is currently the most frequently used means of a lift for 8-40 tons dead weight, train length from 4.4 to 6 meters. Advantage of the structure of mature, stable lifting and cheap; disadvantages inside the frame on the main floor of the closed height of the larger plane.Most forms of double lift truck in 6X4, it is in the second on both sides of the bridge in front of more than one level of the tank is installed (usually 3-4), the hydraulic cylinder on the fulcrum of a direct role in the compartment floor. Double advantage of lifting the main floor for the inside frame of theclosing high on a smaller plane; the shortcomings of thehydraulic system is very difficult to ensure synchronization of two hydraulic cylinders, give less smooth Health on the inside bottom of the overall stiffness higher.Lift the top way before the simple structure, inside the frame on the main floor of the closed high plane can be very small, vehicle stability, the smaller the hydraulic system pressure, but the first trip at the most larger-cylinder class, the high cost .Double-sided cylinder roll force is better, less travel to achieve double-rollover; but more complex hydraulic piping, Health cited a higher rate of roll-over accident.Dump it works: Take a manual jack is the principle of its work, Jack is the most simple of the fuel tank. Pseudosasa pressurized by manually (manual hydraulic pump) to enable the hydraulic fluid through a valve into the fuel tank of the individual, when the hydraulic oil into the fuel tank because of the reasons for individual valve can not be returned back and forced the cylinder rod upward, and then work to continue to keep the hydraulic oil into the hydraulic cylinder, it is so constantly on the rise, when we want to lower the hydraulic valve to open so that hydraulic oil back to tank. This is the most simple working principle, all other improvements on this basis. Dump material tank: fuel tank truck raw materials are generally seamless steel tubes, material for the Si-Mn.Dump truck with the fuel tank of the limits of the piston pressure is 16 MPa, the fuel tank of the scope of the trip ranges from 3830-8000. Billion as a professional production company pre-tank truck manufacturers, dump truck produced by the fuel tank with all the characteristics of the fuel tank.Dump truck and use the performance of the fuel tank: the fuel tank of the main straight for the top pre-dump truck lifting mechanism, the use of advanced processing technology, high-quality steel, import-type seals in general, reasonable structure, reliable performance, with the installation and maintenance convenience, lifting large tonnage, long life and so on.附录B外文文献中文翻译自卸车结构原理与油缸介绍自卸车主要由液压倾卸机构、车厢、车架及其附件构成。

附录附录A 英文文献Dump Truck OverviewCompartment is equipped with automatic devices for dumping cars. Also known as dump trucks, construction vehicles, from motor vehicle chassis, hydraulic lifting mechanism, taking the composition of power devices andFreight platform.In civil engineering, often with the excavators, loaders, belt conveyors, such as joint operations, constitute a loading, transportation and unloading production lines, to carry out earthworks, gravel, loading and unloading loose materials transport. Compartment can be loaded automatically as a result of a certain tipping point of discharge, discharge significant savings of time and labor, reduce the transport cycle, increase productivity, reduce transportation costs, and to identify the loading capacity. Transport machinery is commonly used.Engine, chassis and cab of the truck the same structure and general. Can train to the tipping or lateral tipping, through manipulation of the system control rod movement, tipping beyond the more common to promote the piston rod so that tipping inside. A small number of two-way tipping. The allocation of oil by high-pressure valves, tubing into the lifting hydraulic cylinder, inside the front fenders have a driver's safety. Engine through the transmission, hydraulic pump driven from power devices, hydraulic tipping body inside fuel tanks, hydraulic pumps, distribution valves, hydraulic lifting cylinder, control valves and tubing and other components. Hydraulic tipping body inside the tank, pump, distribution valves, hydraulic lifting cylinder, control valves and tubing and other components. Engine through the transmission, hydraulic pump driven from power plant, high pressure oil through the distribution valve, hydraulic cylinder tubing into the lift, push rod so that tipping inside. After tipping more to the common piston rod through the control system to control movement, will enable the train to stop at any position on the need for the tilt. Compartments use of its own gravity and hydraulic control reset.Dump Truck of the main technical parameters are loaded with weight, and marked volume loading. New car or car repair factory commissioning must be carried out so thatthe process inside a smooth lifting action without strings. Use of the site shall be the right choice of lubricating oil, saving unloading time and labor, the attention of lubrication cycle, lifting oil change schedule strictly. Shipment according to nominal load, overloading is strictly prohibited.Dump truck classification:1. In accordance with the carrying capacity of the chassis can be divided into series dump truck, dump in tons of series and series of large-tonnage Dump;2. By the driver dump the form of the bridge can be divided into single-, double-bridge dump, dump eight after the first four, the first four series of ten different models;3. By unloading the hydraulic lifting mechanism can be divided into different Monacrosporium biparietal dump and dump.Structural analysis of the dump truck:Mainly by the hydraulic dump truck dump bodies, cars, and its annexes constitute the frame. Hydraulic dump them inside the structure of institutions and manufacturers in various different modifications, the following compartments and the lifting mechanism in accordance with the pattern of the two aspects of the structure of that dump truck.1、compartment typeNode compartments by use of different body types can be broadly divided into: general rectangular bucket compartment and inside mine.Ordinary rectangular compartments for the carriage of goods in bulk. Plate with subsequent automatic opening and closing of institutions, to ensure smooth unloading of goods. Ordinary rectangular compartment thickness as follows: pre-board 4 to 6mm, side panels 4 to 8 mm, after the board 5 to 8 mm, bottom 6 to 12 mm. For example: dump truck license ChengLi common standard rectangular compartment thickness as follows: 4 at the end of the first 4 side 8 5.Inside bucket mining is applicable to a larger particle size, such as large stones of goods in transit. Taking into account the impact of goods and touch buildings, mining bucket inside the design of more complex shape, with thicker material. For example:-way power bucket mining dump truck license compartment standard thickness as follows: 6 at the end of the first 6 edges 10, and some models in the floor on some angle iron welded to increase the train capacity of stiffness and impact resistance.2 、lifting body typeDump truck lifting mechanism is the core of the primary advantages and disadvantages of discriminant indicators truck.Type lifting mechanism common current: F-type lifting mechanism to enlarge tripod, T-style tripod lifting mechanism to enlarge, double lift, the former top-lift and double rollover.Enlarge tripod-type lifting mechanism is currently the most frequently used means of a lift for 8 to 40 tons of dead weight, train length of 4.4 ~ 6 meters. Advantage of the structure of mature, stable lifting and cheap; disadvantages inside the frame on the main floor of the closed height of the larger plane.Most forms of double lift truck in 6X4, it is in the second on both sides of the bridge in front of more than one level of the tank is installed (usually 3 ~ 4), the hydraulic cylinder on the fulcrum of a direct role in the compartment floor. Double advantage of lifting the main floor for the inside frame of the closing high on a smaller plane; the shortcomings of the hydraulic system is very difficult to ensure synchronization of two hydraulic cylinders, give less smooth Health on the inside bottom of the overall stiffness higher.Lift the top way before the simple structure, inside the frame on the main floor of the closed high plane can be very small, vehicle stability, the smaller the hydraulic system pressure, but the first trip at the most larger-cylinder class, the high cost .Double-sided cylinder roll force is better, less travel to achieve double-rollover; but more complex hydraulic piping, Health cited a higher rate of roll-over accident.Dump Truck Selection:Dump Truck with the development and improvement of domestic purchasing power, dump truck is not in the traditional sense, what the living can do everything dump truck, from the design point of view is different goods, different working conditions, the development of different regions of different products. This requires users to buy vehicles specific to the use of manufacturers.1、chassisIn the selection of the chassis, the economic benefits that are to be considered, such as: the price of the chassis, loading quality, overloading the capacity of 100 kilometers fuel consumption, maintenance fee, etc.. In addition, users should also consider the following chassis parameters:① plane height on the chassis frame. General 6x4 chassis frame height on the planefor the 1050 ~ 1200. The higher the value the greater the vehicle center of gravity, the more easily overturned. Factors affecting the value is the tire diameter, suspension of the layout and height of the main frame section.②chassis rear overhang. The numerical impact of the General Assembly of Health cited the stability of dump truck, resulting in roll-over accident of Health cited. This value is normally between 500-1100 (except truck rollover).③ vehicle reasonable match, use and reliable.2、uploadDump Truck manufacturer modified the current cohabitation, choose the selection of dump truck manufacturers is equally important than the choice of products. In addition to look at products, but also the ability of equipment manufacturers, dump truck load of design, whether it is a mature technology and equipment, after-sales service commitment, whether or not to buy such accessories.附录B 英文文献翻译自卸车概述车厢配有自动倾卸装置的汽车。

本科毕业设计外文文献及译文文献、资料题目：Loader Overview文献、资料来源：互联网文献、资料发表（出版）日期：院（部）：机电工程学院专业：机械工程及自动化班级：机械姓名：学号： 2指导教师：翻译日期：外文文献：Loader OverviewThe main function of the loader shovel of loose material and short-distance transport operations. It is the fastest growing engineering machinery, machine production and sales and market demand one. We usually see the largest wheel loaders, it is acrawler loaders. Crawler than it has good mobility, does not destroy the road surface, easy to operate, etc.. Wheel loaders has been widely used.A loader (also known as: bucket loader, front loader, front end loader, payloader, scoop loader,shovel, skip loader, and/or wheel loader) is a type of tractor, usually wheeled, sometimes on tracks, that has a front-mounted square wide bucket connected to the end of two booms (arms) to scoop up loose material from the ground, such as dirt, sand or gravel, and move it from one place to another without pushing the material across the ground. A loader is commonly used to move a stockpiled material from ground level and deposit it into an awaiting dump truck or into an open trench excavation.Loaders in general by the chassis, powertrain, running gear, working device, steeringbrake, hydraulic system and operating system.The basis of the loader classification is the Society of Automotive Engineers of America (SAE) rated capacity of the bucket. The classification is based on the largest general purpose bucket offered by the manufacturer or the bucket size adopted by the Contractor, whichever is the loader assembly may be a removable attachment or permanently mounted. Often the bucket can be replaced with other devices or tools—for example, many can mount forks to lift heavy pallets or shipping containers, and a hydraulically opening "clamshell" bucket allows a loader to act as a light dozer or scraper. The bucket can also be augmented with devices like a bale grappler for handling large bales of hay or straw.Large loaders, such as the Kawasaki 95ZV-2, John Deere 844K, Caterpillar 950H, V olvo L120E, Case 921E, or Hitachi ZW310 usually have only a front bucket and are called Front Loaders, whereas small loader tractors are often also equipped with a small backhoe and are called backhoe loaders or loader backhoes or JCBs, after the company that first invented them.The largest loader in the world is LeTourneau L-2350. Currently these large loaders are in production in the Longview, Texas facility. The L-2350 uses a diesel electric propulsion system similar to that used in a locomotive. Each rubber tired wheel is driven by its own independent electric motor.Komatsu-integrated design offers the best value, reliability, and versatility. Hydraulics, powertrain, frame, and all other major components are engineered by Komatsu. You get a 18machine whose components are designed to work together for higher production, greater reliability, and more versatility. Komatsu’s highly productive, innovative technology, environmentally friendly machines built for the 21st century.Loaders are used mainly for uploading materials into trucks, laying pipe, clearing rubble, and digging. A loader is not the most efficient machine for digging as it cannot dig very deep below the level of its wheels, like a backhoecan. The capacity of a loader bucket can be anywhere from to 36 m3 depending upon the size of the machine and its application. The front loader's bucket capacity is generally much bigger than a bucket capacity of a backhoe loader.Unlike most bulldozers, most loaders are wheeled and not tracked, although track loaders are common. They are successful where sharp edged materials in construction debris would damage rubber wheels, or where the ground is soft and muddy. Wheels provide better mobility and speed and do not damage paved roads as much as tracks, but provide less traction. In construction areas loaders are also used to transport building materials - such as bricks, pipe, metal bars, and digging tools - over short distances.Front loaders are commonly used to remove snow especially from sidewalks, parking lots, and other areas too small for using snowplows and other heavy equipment. They are sometimes used as snowplows with a snowplow attachment but commonly have a bucket or snowbasket, which can also be used to load snow into the rear compartment of a snowplow or dump truck. High-tip buckets are suitable for light materials such as chip, peat and light gravel and when the bucket is emptied from a height.Loaders bucket characteristicsedge for super-hard wear resistant steel plate up to 500 Brinell hardnessfor long life.shell and side Brinell hardness of 400 to resist abrasive wear. Installed bythe enhancedtreatment of attachment hinge points to reduce Wear and tear.cutting blade for resistance to abrasive wear of steel, Brinell hardness of 500. Resistantliner installed in the bucket on the floor byThe bolt may be replaced, the Brinell hardness of 500.4. bolt and the edge of savings and staging to prevent unnecessary wear of thecutting edge.5. V olvo bucket tooth system is equipped with a bolt or weld type connector, theBrinellhardness of 515, with best interpolation into the depth and the smaller the wear and tear.Skid-steer Loader Features1. The round-back bucket design is stronger with no angled corners. This configuration makesit easier to fill and dump —improving productivity.2. The ROPS/FOPS structure protects and shields the operator.3. A total of four exterior lights help to illuminate any job site day or night.4. A safety system locks lift, tilt and drive systems when the operator leaves the seat, raisesthe seat bar, or turns off the ignition switch. The brakes are wet-type multiple discs that require no maintenance.5. Heavy-duty tires are standard —matching the durability of the skid-steer.6. The rugged all-welded unitized frame is constructed of .375-inch gauge steel for years ofproductivity. Step bushings are placed in all key pivot areas to increase strength and reduce stress.7. A wider wheelbase provides for a smooth ride and more balance for stability with heavierloads. A 9-inch ground clearance allows easy maneuverability through mud and other terrain.8. Hydraulic lines are protected within the loader arm.9. Mustang features a self-leveling vertical lift.10. The advanced hydraulic system affords longer service intervals and comes with a sight glass for quick and easy fluid level inspections.11. A drop-down step makes it convenient to check engine and maintenance Points.This wheel loader offers two selectable engine operating modes —Normal and Power. The operator can adjust the machine’s engine performance to match the condition requirements.This system is controlled with a dial on the right side control panel.（1）Normal Mode: provides maximum fuel efficiency for most general loading conditions. （2）Power Mode: provides maximum power output for hard digging conditions or hill climb operations.2 Automatic Transmission with Four Mode Select SystemThis operator controlled system allows the selection of manual shifting or three levels of automatic shifting modes (low, medium, and high). The operator can match the machine’s operating requirements with optimum performance efficiency. This system is controlled with a dial on the right side of the control panel.（1）Manual: The transmission is fixed to the gear speed and selected with the gear shift lever.（2）Auto Low: Low mode provides smooth gear shifting at low engine speeds suitable for general excavating and loading while offering reduced fuel consumption.（3）Auto Medium: Medium mode provides gear shifting at mid-range engine speeds required for more aggressive conditions.（4）Auto High: High mode provides maximum rim pull and fast cycle times by shifting the transmission at high engine speeds. This mode is suitable for hill-climb and load and carry operations..Unlike backhoes or standard tractors fitted with a front bucket, many large loaders do not use automotive steering mechanisms. Instead, they steer by a hydraulically actuated pivot point set exactly between the front and rear axles. This is referred to as "articulated steering" and allows the front axle to be solid, allowing it to carry greater weight. Articulated steering provides better maneuverability for a given wheelbase. Since the front wheels and attachment rotate on the same axis, the operator is able to "steer" his load in an arc after positioning the machine, which can be useful. The tradeoff is that when the machine is "twisted" to one side and a heavy load is lifted high, it has a greater risk of turning over to the "wide" side.Front loaders gained popularity during the last two decades, especially in urbanengineering projects and small earthmoving works. Heavy equipment manufacturers offer a wide range of loader sizes and term "loader" is also used in the debris removal field to describe the boom on a grapple truck.The Israeli Combat Engineering Corps use armored Caterpillar 966 wheel loader for construction and combat engineeringmissions in hostile territories such as the West Bank. They are often seen building or removing road blocks, building bases and fortifications and starting in 2005, demolishing small houses. The IDF added armor plating for the loader, protecting it against rocks, stones, molotov cocktails, and light gunfire.Rio de Janeiro's police elite squad BOPE have recently acquired one wheel loader of military purposes to open routes and make way for the police in Rio de Janeiro's slums, which are controlled, and blocked, by drug dealers.These loaders are a popular addition to tractors from 50 to 200 hp. Its current 'drive-in' form was originally designed and developed in 1958 by a company called Quicke. They were developed to perform a multitude of farming tasks, and are popular due to their relatively low cost (compared toTelehandler) and high versatility. Tractor loaders can be fitted with many attachments such as hydraulic grabs and spikes to assist with bale and silagehandling, forks for pallet work, and buckets for more general farm activities.Popular additions to compact utility tractors and farm tractors are Front End Loaders, also referred to as a FEL. Compact utility tractors, also called CUTs are small tractors, typically with 18 to 50 horsepower (37 kW) and used primarily for grounds maintenance and landscape chores. There are 2 primary designs of compact tractor FELs, the traditional dogleg designed style and the curved arm style.John Deere Tractor manufactures a semi-curved loader design that does not feature the one piece curved arm, but also is not of the traditional two piece design. New Holland Ag introduced a compact loader with a one piece curved arm on its compact utility tractors, similar one piece curved arm loaders are now available on compact tractors on many brands including Case/Farmall, and some Montana and Kioti tractors. Kubota markets traditional loader designs on most of its compact tractors but now features a semi-curved loader design similar to the John Deere loader design on several of its small tractors.While the Front End Loaders on CUT size tractors are capable of many tasks, given theirrelatively small size and low capacities when compared to commercial loaders, the compact loaders can be made more useful with some simple options. A Toothbar is commonly added to the front edge of a loader bucket to aid with digging. Some loaders are equipped with a quick coupler, otherwise known as a Quick Attach (QA) system, the QA system allows the bucket to be removed easily and other tools to be added in its place. Common additions would include a set of Pallet Forks for lifting pallets of goods or a Bale Spear for lifting hay bales.A skid loader is a small loader utilizing four wheels with hydraulic drive that directs power to either, or both, sides of the vehicle. Very similar in appearance and design is the track loader, which utilizes a continuous track on either side of the vehicle instead of the wheels. Since the expiration of Bobcat's patent on its quick-connect system, newer tractor models are standardizing on that popular format for front end attachments.A swing loader is a rigid frame loader with a swinging boom. The boom can swing 180 degrees or more. Swingloaders are primarily used by the railroad industry to lay rail. Like other loaders many attachments can be attached to the boom such as magnets, forks, and buckets. Smaller swingloaders are used in farming applications for loading out. A swinging boom is advantageous where space is limited. The loader is able to lift on all sides and dump off on all sides.At present, foreign multi-functional logistics equipment and related technologies are increasingly improved, and development series, large-scale, miniaturization, multi-purpose and other direction. Internationally renowned manufacturers (such as Lynx, Case, Caterpillar, Komatsu, liebherr, V olvo, etc.) widely used in microelectronics and information technology, and improve computer-aided driving systems, information management systems, such as the application of electronic monitoring and automatic alarm system, materials used for precision fitted, upload, GPS positioning and weight of the operation of industry automatic weighing device; the use of special noise reduction materials, noise suppression to eliminate or reduce machine noise in the loader work; through continuous improvement EFI devices to further reduce exhaust emissions of diesel engines, non-polluting, economical, environmentally friendly power plant; optimize the structural design of the working device, such as a single "Z"-type linkage evolution of the eight parallel institutions, TP linkage and ERASLINK "institutions (single-action arm cast steel structure), and O & K is designed specifically for small multi-function loaderLEAR linkage in order to improve the operating productivity of the loader, have developed many of the features ultra- strong systems, such as: power electronics control / management system automatically adjusts the engine output power; engine automatic control system, when the loader in a non-working condition, automatically reduces engine speed, reducing fuel consumption and engine noise; key information display systemand so on. Loader industry leading products are basically developed in the early 1970s Liugong ZL50-based development, an international technical level of the 1960s. In the 1980's digestion and absorption of advanced technology in the United States, Caterpillar, Komatsu of Japan, and gradually the successful development of the second generation wheel loader. Compared to China's second-generation products with international advanced products in the mechanical and electrical integration, manipulation of comfort, operating efficiency, a wide gap between the biggest gap is the product reliability, domestic multi-function loader machine reliability (average time between failures is less than 400 hours), lack of core technology and key components are imported, and products a single, low-grade products. Although domestic loaders and related technical work started late, but soon the pace of development, such as multi-function loader sales have accounted for half of the loader market in the world, China has become the world's multi-function loader production and marketing power.China Loader Industry has the third-generation products. The third-generationmachine reliability is greatly improved, the main performance indicators largely withthe international advanced level. However, in reliability, comfort, operational efficiency and manufacturing levels of baking and foreign advanced level there is a considerable gap. Fourth-generation product in the third generation on the basis offurther optimization of the overall performance and configuration, the electric control box, wet brake technology has been applied, and formed a proprietary technologyand patented technologies in enterprises, so that product with a new face to the market. These will further promote the technological progress of China's loader industry.Microelectronics and information technology will be widely used, further improve thecomputer-aided driving systems, information management systems and fault diagnosis system; single sound-absorbing material, the noise suppression methodsto eliminate or reduce machine noise; through continuous improvement of the fuel injection device further reduce exhaust emissions of diesel engines. In addition tothese, but: multifunctional bucket, ripper, liquid Villagehammer, snow, etc. a variety of devices, small size, power, lightweight and flexible, and better fuel economy, increased cab size and glazing area, improve the indoor air pressure to the dust, to improve the control system and the joystick position to improve the operating environment of comfort, reduce the operator's labor intensity, and beautify theappearance. Particular because of China's mining loader started late, whether it isproduct variety, performance parameters, or the use of reliability, after-sales serviceand so on, and abroad there is a considerable gap. Therefore, the trend of its development is the introduction of foreign advanced technology to develop high-quality, multi-functional, multi-species, multi-standard range of products to increase market competitiveness; strengthen basic components, parts production and quality, in particular, is to improve the hydraulic the quality of the components, in order to achieve to meet the requirements of the premise of the product reliability,reduce product cost; improve the quality of service products.Half of the market, China has become the world's multi-function loader production and marketing power.中文译文：装载机概况装载机是一个通常用于建筑的重型设备，主要用于将材料（等asasphalt，拆除杂物，灰尘，雪，饲料，砾石，原木，矿物原料，再生材料，岩石，沙，木屑）装入另一种类型的机械（如自卸车，输送带，进料斗，或车厢）。

本科生毕业设计 (论文)
外文翻译
原文标题 A Brief Description of Lift Truck System
译文标题自卸汽车举升系统浅谈
作者所在系别机械工程系
作者所在专业车辆工程
作者所在班级B13141
作者姓名马兴瑜
作者学号201322283
指导教师姓名刘志强
指导教师职称讲师
完成时间2017 年 3 月
北华航天工业学院教务处制
注：1. 指导教师对译文进行评阅时应注意以下几个方面：①翻译的外文文献与毕业设计（论文）的主题是否高度相关，并作为外文参考文献列入毕业设计（论文）的参考文献；②翻译的外文文献字数是否达到规定数量（3 000字以上）；③译文语言是否准确、通顺、具有参考价值。

2. 外文原文应以附件的方式置于译文之后。

自卸车简介范文自卸车是一种用途广泛的运输工具，其主要功能是将各种物料从一个地方运输到另一个地方，特别是用于大批量的土石方工程、煤矿、建筑工地等场合。

自卸车具有卸货方便、高效快捷、工作范围广等特点，被广泛应用于建筑、矿山、市政工程以及农业等领域。

自卸车的主要部件包括底盘、升降系统、搅拌装置和底部卸料装置。

底盘是自卸车的基本骨架，主要由车架、发动机、变速器和驱动桥等组成。

升降系统由液压缸、升降机构和操纵系统组成，用于控制车斗的升降。

搅拌装置是自卸车特有的部件，主要由搅拌轴、搅拌叶片和搅拌筒组成，用于搅拌混凝土、砂浆等材料。

底部卸料装置由卸料斗和卸料机构组成，卸料斗可通过升降系统控制升降，卸料机构可控制卸料速度和方向。

自卸车根据不同的工作原理和使用场合，可以分为前自卸车和侧自卸车。

前自卸车是指车斗的卸料口在车辆的前部，适用于矿山、建筑工地等需要直接将物料倾倒到指定位置的场合。

侧自卸车是指车斗的卸料口在车辆的侧部，通过侧翻卸料的方式将物料倾倒到一侧，适用于需要将物料分散到较大范围的场合。

自卸车的工作原理是：通过液压系统控制升降机构，将车斗升至一定高度；通过升降机构和液压系统的配合，将车斗倾斜至一定角度；同时，通过操纵系统控制升降机构和卸料机构，实现自卸车的卸料功能。

自卸车的优点主要体现在以下几个方面：1.卸货方便快捷：自卸车通过液压系统控制车斗的升降和卸料角度，能够将物料快速高效地倾倒到指定位置，提高了卸货效率，减少了人力和时间的消耗。

2.工作范围广：自卸车可以在不同的工作环境下使用，包括建筑工地、矿山、市政工程等，适用于各种物料的运输和卸载。

3.灵活性强：升降系统和操纵系统可以根据需要进行调节，可以根据工作场合和物料性质的不同，灵活控制自卸车的升降速度、倾斜角度和卸料速度，提高了工作效率。

4.安全可靠：自卸车采用了液压系统和操纵系统控制升降和卸料功能，操作简单方便，减少了人员的操作难度和劳动强度，并且保证了卸货的安全和可靠性。

中英文资料对照外文翻译(文档含英文原文和中文翻译)Dump TruckDump Truck mainly refers to the delivery of goods unloaded the car and there is dumping the car, also known as Dump Trucks.Dump Truck is characterized by its compartment can be tilted a certain angle, so that unloading the goods inside. Tilting train is a Dump Truck engine power, through the dumping of bodies to complete.Dump Truck from the early 20th century there has been continuous development and perfection, has become the main vehicle of transport of goods. Dump Truck unloading a high degree of mobility and mechanization a bit, usually with shovel loaders, excavators, or belt conveyors and other ancillary use to achieve loading and unloading mechanization, which can greatly shorten the handling time and improve transport efficiency and save labor, reduce labor strength. As the car manufacturing industry, Dump Truck continued introduction of new materials, new technology, improve the quality of the utilization factor, with great speed range and high transmission efficiency, control and manipulation of better and more convenient.First, the status of technology development at home and abroad1. HumanizationFurther improve vehicle safety, vehicle safety, including performance, braking performance is further enhanced convenience and driver control, comfort is the car at home and abroad reflect the requirements of human development, which is reflected in the body, chassis and other aspects .(1)Suspension SystemForeign high-end Dump Truck, such as SCANIA, VOLVO, etc., air suspension with automatic adjustment, and basic domestic or leaf spring, a better use of the rubber suspension.(2)Transmission SystemMain Foreign is automatic transmission. China mainly with manual gearbox, there are some manufacturers began to try to configure the chassis automatic transmission.(3)Braking SystemsElectric control system mainly foreign (ECBS) and air disc brakes and ABS electronic control system installed. China mainly uses drum brakes, ABS, electronic brake system installed in the smaller, but also began developing the disc brake manufacturers.(4)Body SystemsDump Truck body of domestic comfort than the gap in Europe is still a great car.But high-end cab, driving and ride comfort has been greatly improved than before.2. SpecializationExclusive of foreign Dump Truck classification is increasingly apparent. In addition to general engineering of Dump Truck, but also according to the needs and purposes century, the development of a dedicated is Dump Truck.(1)Road salt cleaning truckOf snow, snow days will be transported to the road salt, snow on the road sweeping, snow spraying of salt.(2) Class of fluid transport truck pollutionAchieve pollution class fluid collection, transportation and dumping, can better protect the vehicle chassis, suitable for road paving and construction of the gravelmaterial transport.China Dump Truck of professional classification is not very clear that the Dump Truck currently mainly used in construction, mining, coal transportation, and its degree of specialization than the foreign classification there a larger gap.3. Structure OptimizationEuropean high-strength steel materials often used Dump Truck or a U-shaped carriage frame structure, the advantages are: light weight, great load, more payload can be loaded indirectly increase the loading efficiency; reduce fuel consumption, low center of gravity, good stability , lifting more goods at the time the play, easy todischarge; integral bearing, no or only a few ribs, a small amount of welding; more modern design, the outer surface of a large flat, easy to paste advertisements, or other patterns. Europe is very special car made extensive use of plastic toolbox fender cover.Plastic material has certain of toughness, resistance to low temperature and impactresistance, easy to rattle, and light weight, attractive appearance, lightweight is process in playing an important role.There are also a part of the manufacturers of high technical level, through changes in the structure reduces weight and do not reduce the cars performance, the main frame is the use of the car structure.For cost and processing considerations, the domestic truck still ordinary steel, steel plate as the main material.4. Environmental protectionAs the world's growing environmental protection, national environmental protection requirements on the vehicles are more stringent. Dump Truck load of goods sealing requirements increasing.Automotive engine technology represents a country's industrial level. Developed countries in Europe to Euro V vehicle emissions standards, and requirements of the domestic truck is currently the country Ⅲstandard, domestic and foreign well as very large gap, and reduce vehicle emissions of key technologies are only few the hands of countries, China still has great technical follow up and development process. Further enhance the environmental protection requirements, sealing requirements of the Dump Truck also mentioned the agenda, both at home and abroad using a variety of methods to prevent the Dump Truck's cargo spilled. Dump Truck in the professional classification abroad also help protect the environment, such as pollution category of fluid transport development and use of Dump Truck, but most major blessing Oh compartment sealed by a Dump Truck's way. Dump Truck of the closures are mainly two: one for soft tarpaulin cover and a metal hard cover. Therefore, foreign vehicles generally do not overload, the basic goods does not exceed the car along. The Dump Truck is the domestic have both, the majority of urban environmental requirements of the high metal cover, seal better, but the cost is high; environmental requirements of the majority of the lower soft cover, seal less, but the cost is low.Second, the main structure and functionDump Truck chassis and coat by the two major components, two types of chassis they use a stereotypical car chassis. Dump Truck as a shorter wheelbase than the average, the prices require higher strength and stiffness, so characteristic for the Dump Truck, Dump Truck chassis are often designed to be specific. Tipper tops, including cars, subframe, hydraulic lift dump bodies, electrical are systems.Dump Truck lifting mechanism is the core of the Dump Truck judge the merits of the primary indicators.Lifting mechanism of the type currently common are: F-type lifting mechanism to enlarge tripod, T-style tripod zoom lifting mechanism, lift cylinder, front roof lift and double roll.Dump Truck engine, chassis and cab of the truck are the same structure and general.Points after Dump Truck of the car to rollover and side tipping two, by manipulating the system control rod movement, the more common after the tipping, tipping push rod to make car, a small number of two-way is tipping.Distribution of high-pressure oil through the valve, tubing into the lift cylinder, front-end with the cab car is safety board.The engine through the transmission, PTO driven hydraulic pump unit, hydraulic tipping body compartments from the fuel tank, hydraulic pumps, distribution valves, lifting hydraulic cylinders, control valves and tubing and other components.Hydraulic tipping body is compartments from the fuel tank, hydraulic pumps, distribution valves, lifting hydraulic cylinders, control valves and tubing and other components.The engine through the transmission, PTO driven hydraulic pump unit, distribution valves for high pressure oil through the tubing into the lifting cylinder, push rod to make car rollover. More common after the rollover, by manipulating the system control rod movement, can stop the train tilted in any desired position. Compartments use of their owner gravity and hydraulic control reset.Tripod enlarge Lifting Mechanism is currently the most widely used way of lifting for 8 to 40 tons of load compartment length of 4.4 to 6 meters. Structural advantages of mature, stable lifting and low cost; drawback to the main frame on the floor inside is the closed height of the larger plane.Most of lift cylinder form of Dump Truck used in the 6X4 on the bridge in front of each side of the second installation of a multi-cylinder (generally 3 to 4), the hydraulic cylinder directly on the pivot point on the compartment floor. Twin advantages of lifting the main frame for the compartment floor and a high degree of closure on the smaller plane; disadvantage is that the hydraulic system is difficult to ensure synchronization of two hydraulic cylinders and held steady and poor students, the overall stiffness of the cars require a higher floor.Way before the top lift of simple structure, with the main frame on the floor inside the closed surface height can be very small, vehicle stability, low pressure hydraulic system, but the first big trip at the most-cylinder, high cost.Double roll force cylinders good, travel less, achieve double roll; but more complex hydraulic piping, give students a higher incidence of rollover accidents.Dump Truck with the development and improvement of domestic purchasing power, Dump Truck is not in the traditional sense of what life can be dry universal truck, from the design point of view but also according to different goods, different conditions, different is regions developed different products. This requires the user to purchase vehicles to the manufacturer for specific use.1.ChassisIn the choice of chassis, generally is based on economic benefits to consider, such as: the price of the chassis, loading quality, overload capacity, fuel consumption per hundred kilometers, road maintenance and so on. In addition, the user must also consider the chassis of the following parameters:①H eight of the chassis frame on the plane. General 6x4 chassis frame height of the upper surface of 1050 to 1200. The higher the number the greater the vehicle center of gravity, the more easily cause an overturn. The main factors affecting the value of the tire diameter, suspension layout and the main frame is cross-section height.②Chassis rear overhang. The number of Dump Trucks moves through the General Assembly, growth stability, gives students a rollover accident caused. This value is generally between 500-1100 (except Dump Truck roll).③Vehicle matching rational use and reliable.2.UploadCurrently converted Dump Truck manufacturers was mixed, select the Dump Truck manufacturers over the selection of choice products are equally important. In addition to looking products, but also understand the capabilities of equipment manufacturers, Dump Truck tops the design, technology and equipment is mature, service commitments, it can buy other accessories.Third, the lifting mechanism of choice:1. Recommended to choose a tripod for general use zoom-type Dump Truck lifting mechanism, the structure in China has a 40-year history, technology is relatively mature, suitable for carriage 4 to 6 meters in length Dump Truck.2. Reasonable arrangement, the parts Shouli Bu exceed the capacity of components, system hydraulic smaller, in order to ensure the seal life.3. The choice of quality hydraulic cylinders. Lifting hydraulic cylinder is the power unit, try to choose a quality assurance products, such as: blue post card hydraulic cylinder, the manufacturers promised lifetime warranty.4. Compartment of the truck longer than 6 meters generally used inmulti-cylinder front-top lifting structure.5. Cylinder lifting structure is generally used with a wheelbase of the truck 3 to 4meters.Fourth, selection issues to the attention of1. Transport large items must be selected inside the bucket.2. Car is longer than 5.4 meters to pay special attention when the cars center ofgravity and lifting stability.3. Can not be transported by special vehicles to transport coal earth. Private carcoal train general height of 1.6 ~ 1.9 m, length how the design of these vehicles is based on light goods (weight less than 1.2) to consider, for transporting earth and stone lifting may have poor stability, which seriously may lead to lifting a rollover accident.4. Do not use the bucket car transporting silt, clay and other sticky goods, thestructure of the bucket carriage of goods more difficult to remove the sticky.5. Transport iron ore in the Dump Truck manufacturers to keep up when thestatement selection, selection of the best choice for iron ore carrier.6. For the transportation of asphalt paving, the lifting mechanism requires slowdown device.Fifth, use and maintenance of Dump TruckHow several common errors:1. Engine running, take power in the "on", lift the handle in the "lift" and Menglift the clutch. Since leaving the sudden engagement PTO, oil pump and oil pump drive shaft causes a lot of impact load, could easily lead to early damage (usually occurred as the oil pump drive shaft damage.) High-speed operation in the engine compartment fully loaded, cold winter with high viscosity hydraulic oil under even more prominent.2. In the middle of a sudden the elevator full of lifting the handle into the "down position", when the car was not touched down, but suddenly rushed down, this will bring great impact frame, and even accidents. Although the single-acting hydraulic cylinder piston set a throttling device to ensure that the decline in the car before the end of the throttling effect have landed on the car speed is automatically slowed down, but the cars full effect has been obvious, therefore, should try to avoid these operations, If special circumstances must also be careful, try to slow down the landing speed, do not suddenly have to avoid the car off in the end.3. Xiewan goods, do not forget to disengage the power take off, or disengage the power take off will be driving, so the car is moving, due to take power in the "engagement" position, the lift pump in the "small cycles" state No load speed for a long time operation. The so-called "small cycles" when running the oil pump oil pump hydraulic oil only in the high and low voltage circuit between the loop. In this case the hydraulic oil temperature rises quickly, easily lead to damage to pump seals, or even pump "burned" phenomenon; Also in the high-speed driving, the oil pump drive shaft will also result in high centrifugal force early damage. More seriously, the operation means that the hydraulic pump system has a power source, the driving process will occur for various reasons, the rising car auto accident. Therefore, in the unloaded vehicle, you must promptly confirm the power take disengaged and then the vehicle has been disengaged.4. By Meng mention car - brake suddenly unloading. Meng mentioned as the inertial force of a great car (usually the rated lifting force of 5 to 20 times), can easily cause permanent deformation of the frame, open frame car and pay for welding, burning or destruction of oil pump seal, hydraulic cylinders and other damage damage , reduces the life of the vehicle, serious rollover accidents also occur. Therefore, when lifting the general ban truck traffic.5. Driving power take off in the "ON" position: If "on" state (red light), the pump will continue to rotate, there is power source of the hydraulic system, which would control valve because the gas control misoperation caused by cars on the auto-lifting; time distribution of air control valve even in the "down" position, the oil should enter the pump, it would pump burned out.6. Moving to lift the handle placed in the "stop" position: At this point the hydraulic system in a closed state, the impact of the ground while driving throughthe lifting mechanism can be passed to cars , some connected parts are easily damaged. So when driving down the handles is put some "down" position.7. In a great venue for cross slope of discharge: trunk askew when lifting, car flip axis may produce permanent deformation may occur more serious when it overturned.8. Goods have not been fully discharged when the use of safety rod may result in accidents, the safety pole inspection and maintenance is only used for carriages.自卸汽车自卸汽车是指以运送货物为主且有倾卸货厢的汽车，又称翻斗车。

附录一外文资料原文Wheel Loader PrototypesIn the 1920s, small agricultural tractors were outfitted with a loader bucket for re-handling of light materials. This contraption served as the earliest prototype for the modern wheel loader. The earliest versions of the wheel loader were nothing more than a pivoting bucket and lift arms mounted on a farm-type tractor. A bucket was mounted on a tractor using wire ropes through aclutch-operated winch, and then dumped by gravity through a trip release mechanism. By the 1930s, a number of manufacturers were developing small wheel loaders by fastening buckets onto tractors. E.Boydell & Co., in Manchester England, was one of the first recorded makers of a bucket-mounted tractor with their Muir-Hill loader, a 0.5-cubic yard (0.4 m3) cable-controlled bucket mounted on a 28 horsepower Fordson Tractor.Rigid Frame Wheel LoadersIn 1939, an engineer from Chicago by the name of Frank G. Hough developed the first self contained, two-wheel drive, rubber tired, loader called the Hough Model HS. The machine had a bucket capacity of 1/3 cubic yard (0.25 m3). The bucket was dumped by gravity through a latch mechanism.Other manufacturers began to produce integrated four-wheel drive wheel loaders. Many of the first wheel loaders had rigid frames. Though these machines were integrated, their rigid frames limited maneuverability resulting in the machines to turn in large circles rendering them useless to operate in tight places.The first three wheel loaders developed by Caterpillar, for example, had rigid frames. Other manufacturers like Euclid/ Terex entered the wheel loader market in 1957, rather late, with a small rigid frame wheel loader unit known as the L-7.Furukawa FL35I 4x4 Articulated Wheel LoaderPerhaps one of the most significant milestones in the evolution of the wheel loader was the introduction of the articulated frame. Mixermobile Manufacturers in Portland, Oregon first pioneered this technology in 1953 with the Scoopmobile Model LD-5, In 1944, Hough went on to manufacture a loader with the firsthydraulically actuated bucket tilt. This gave the machine the ability to control dumping and the operator could approach a bank in low gear and scoop a full bucket by tilting the bucket back during loading. In 1947, Hough would advance wheel loader development once again when the company developed the world's first four-wheel drive hydraulic wheel loader the HM Model. The model is still considered the forerunner for the modern wheel loader.Mixermobile Manufacturing can be credited with introducing the first wheel loaders with hydraulic motors when it developed the Model H wheel loader in 1952 and the Model HP wheel loader in 1957. These loaders had a single centrally mounted bucket arm.The Tractomotive Corp., founded by Van Dobeus, was another company to introduce the hydraulic wheel loader to the U.S. market. This involved fastening a hydraulic wheel mechanism with hydraulic power to the bucket crowd. This development transformed the wheel loader virtually from a re-handling machine to a digging machine.Front Pivot ArmAs wheel loaders increased in size through the 1950s, concern for safety arose, particularly in the positioning of the loader arm pivot. Positioned behind the operator, the loader arms, as they moved up and down, were in close proximity to the operator. This posed problems. First, the moving arms presented an accident just waiting to happen. Second, the moving parts limited the operators' side visibility, particularly when in a raised position. In the late 1950s, a number of American wheel loader manufacturers were working in collaboration with the National Safety Council to reposition the arm pivot to be in front of the operator rather than behind. Hough was one of the first manufacturers to come up with a new, safer design with the production of their Model HO wheel loader.Other manufacturers quickly followed suit in adopting the front mounted pivot including Caterpillar in 1958, Case in 1959, Allis-Chalmers in 1961 and Michigan in 1962.Large-sized Wheel LoadersAs the 1960s arrived, the trend in wheel loader production focused on larger machines with greater payload capacity. After Caterpillar launched theirsix-cubic yard (4.6-m3) Model 998 in 1963, a number of industry surveys revealed a need for loaders to be much larger than the standard size of five to six cubic yards (3.8 to 4.6 m3). The market was demanding more rugged mobility from loading tools and larger wheel loaders were deemed the solution. Manufacturers began to flood the market with larger sized wheel loaders. Hough Division of International Harvester built the H-400, a wheel loader with a 10-cubic yard (7.6-m3) bucket. Other manufacturers responded by producing loaders with10-cubic yard (7.6-m3) buckets including Caterpillar's 992, the Scoopmobile 1200 and Michigan's 475.Over the years, the industry has continued to push the boundaries in terms of payload capacity. In the 1970s, a number of wheel loaders were showcased at 1975 CONEXPO with increased payload capacity not otherwise seen before in the industry including Hough's 21-cubic yard (16-m3) 580 Payloader and Clark-Michigan's massive 675 wheel loader with a 24-cubic yard (18.3-m3) capacity.[15]In 1986, the record in payload capacity was broken when Kawasaki Heavy Industries Ltd., developed the largest wheel loader with a 25-cubic yard (19-m3) capacity for Japan's Surface Mining Equipment for Coal Technology Research Association. Eventually, other manufacturers including Caterpillar, Komatsu, and LeTourneau would delve into making loaders with capacities of 20 cubic yards (15.3 m3). LeTourneau's Legacy1988 Komatsu WA600-1L Wheel LoaderLeTourneau is a manufacturer that has a reputation of building record-breaking heavy equipment. The company developed and still manufacturers the largest wheel loader in the world, the L-2350.This loader is primarily used in surface mining and boasts a 2300 horsepower machine and an 80-ton, 53-cubic yard (40.5-m3) capacity rock bucket and a breakout force of 266,000 pounds. The height, to the top of the cab and bucket fully raised, is a staggering 43 feet and nine inches (13.23 m). The machine was designed to load 300- to 400-ton plus mining trucks in four to five passes.Le Tourneau's wheel loaders feature diesel-electric drive with DC electric motors in each wheel, a concept developed by LeTourneau himself. In the 1960s, the company started producing very large electric loaders with power to the hoist and bucket tilt transmitted through a rack-and-pinion drive. At first, these huge rack-and-pinion motors were not very commercially successful because the advantage of articulated steering was diminished due to the loader's industrial strength. As a result, few were actually built. One such model was the SL-40 model nicknamed the Monster and measuring 52 feet (16 m) long.The present day line of LeTourneau wheel loaders is derived from the L-700 series electrical drive model first produced in 1968. The L-700 was the forerunner to a series of successful loaders produced in large amounts to this day. The machines have departed from the rack-and-pinion motors but retain the electric drive wheels. Though the rack-and-pinion motor wheel loaders where not big sellers, they did prove to work hard and had a life cycle of more than 20 years. New DevelopmentsToday, electrical loaders exist on the market and function with much the same capacity and versatility as diesel engine or gasoline engine wheel loaders. Wheel loaders also come with a range of attachments such as grapples, forks, and buckets in varying sizes that expand their tasking to include light demolition and tunneling.[21] Some wheel loaders come equipped with ride control, which allows for greater operating speeds on bumpy surfaces.New breakthroughs in adopting hybrid technology to reduce fuel transmissions are underway. In March 2008, Volvo unveiled at CONEXPO, a pre-production prototype of its L220F Hybrid wheel loader. The loader will offer a 10 percent reduction in fuel consumption. The technology has been developed within the Volvo Group and remains confidential and subject to patents. Slated for production in late 2009, the L220F will be the industry's first commercially available hybrid wheel loader.Volvo also has come up with a design concept for a wheel loader called the Gryphin. It is the company's futuristic vision of what a wheel loader may look like wellinto the year 2020. The Gryphin has a hybrid diesel and electric power motor. Replacing the standard transmissions, drivelines, and axles, the Gryphin will feature electrical motors inside each wheel which will make it run quieter than current models. The cab of the Gryphin is also unique and entirely composed of glass that will provide the operator with a greater range of visibility on all sides.How it WorksA wheel loader today is comprised of a pivoted frame, usually articulated, with the engine mounted over the rear wheels, and a cab or canopy resting over the front or rear end frame. The pivot arrangement of the machine is key in giving the wheel loader the capability to maneuver and work in small turning circles. 1974 W14 Wheel LoaderWheel loaders are segmented in the market according to their horsepower. Compact wheel loaders are loaders with 80 horsepower or less, and then the classification is broken down accordingly from 80 to 150 horsepower, 150 to 200 horsepower and 200 to 250 horsepower.Power is supplied from a diesel engine through a torque converter and power shift gears to drive the wheels. Most wheel loaders are now four-wheel drive requiring that all wheels be of the same size but the machines can be operated in two-wheel drive too. Rear wheel drive enhances the machine's digging capability while front wheel drive enables better traction when carrying a full bucket. SpecificationsIn the equipment industry a set of specification criteria are used to measure a wheel loader's performance capacity and usefulness for handling certain construction applications. These include bucket features including the size of the bucket and cutting edges or teeth, tires and their ability to provide traction, tipping load and counterweight, speed, and breakout force. Breakout force is the most-quoted specification for wheel loaders and provides an indication of a wheel loader's digging ability.HistoryGeneral Services and Workshop FacilitiesGough Gough & Hamer has operated Engineering and Manufacturing divisions since the mid 1950's. Since the 1960's and up to 1989, engineering work was carried out primarily by the Gough Gough & Hamer Manufacturing Division, which specialised in the assembly of Hyster and Caterpillar machines. In the 1980's the role was expanded to include in house steel fabrication of frames for Hyster and Caterpillar machines. This included all aspects of production, from cutting plate to machining. This work was made possible by innovative weld fixtures designed by Andrew Gallington, who later established systems and planning for the computerised manufacturing management system. Machines assembled during this period include Hyster Electric Lift Trucks, H40XL up to H275H machines. Caterpillar machines built under the Fieldchief name ranged from 910 to 966 Wheel Loaders, 518 Log Skidders and 120G/130G Graders.In 1988 Bill Cannell was employed by Gough Gough & Hamer's Christchurch branch to manage the production of Transmix Concrete Mixers. Gough Gough and Hamer now accounts for 70% of the New Zealand market in Transit Concrete Mixer. At about this time, Hyster and Caterpillar machines were able to be imported into New Zealand fully built up. This lead to the close of Gough Gough & Hamer's Manufacturing Division and the engineering resources where then passed over to Gough Gough & Hamer's Christchurch branch. The Manufacturing Division's key staff were transferred to Christchurch branch, and a number of new staff were employed with specialised knowledge of the Transmix Range. the new staff included Charlie Greatbatch, Gough Engineering's Works Manager, and Neil Seales, the Machine Shop Forman.In 1990 Gough Gough & Hamer added Fieldchief Logging Forks designed by Andrew Gallington to its range of products, as well as a number of other custom designed products. In 1994 Gough Engineering was established as a business unit of Gough, Gough & Hamer to specialise in the design and manufacture of existing Gough Gough & Hamer products such as Fieldchief Buckets and Log Forks, Transmix Concrete mixers and Concrete Batch Plants. As well as its own designed products, Gough Engineering also established itself as a project steel fabricator buildingconveyers, bins and screw conveyors.In 1995 Gough Engineering included a 3D CAD program to its resources and Solid Modelling in 1998. The introduction of CAD improved Gough Engineering's product design flexibility and resulted in an ever increasing range of products, such as Automatic Batching Plants, Cement Silos, wheel loader and excavator buckets as well as custom design and build projects.In 1996 Gough Engineering established a site in Auckland, which quickly expanded and required a new workshop to be built in 2000.In 1999 Gough Engineering installed the largest CNC Profile cutter in the South Island to cut its ever increasing product range.Fieldchief ProductsGough Gough and Hamer has built a wide range of products under the Fieldchief brand name for the earthmoving, processing and construction industries for over fifty years. From the early 1970's to 1989 Gough Gough & Hamers Manufacturing Division assembled Caterpillar machines and manufactured a number of components due to import regulations on wheeled machines. During this period Fieldchief became synonymous Caterpillar performance and quality. In the early 1980's Manufacturing Division began in-house steel fabrication of Wheel Loader, Log Skidder and Grader frames. As import regulations were dropped the Fieldchief name was applied to Buckets, Log Forks and attachments currently manufactured by Gough Engineering.The oldest Fieldchief product that we know of is a Fieldchief Swamp Plough serial number GH5000/5 which is located at Brayshaw Historical Park near Blenheim. We still have a copy of the blue prints should you need one. The plough was manufactured in the 1950's and is in excellent condition and no doubt will remain that way. Brayshaw Historical Park is well worth a visit for machinery enthusiasts as the collection includes engines of all types most of which are in working order.Rippers and Blades were first produced in 1966 followed in 1972 with the assembly of 950A and 966C wheel loaders. In 1981 930 and 920 wheel loaders were added.During this period a number of different wheel loader buckets were produced. Other parts that were made locally include hydraulic rams, pins and bushes and a wide range of castings. Up until the 1980's most of the steel fabrication was supplied by local steel fabricators, the assembly of machines being the main activity. As new models were released the Manufacturing Division established its own steel fabrication workshop. The 950B was the first of the new design Caterpillar machines to be made in 1984; major fabrications built included the bucket, lift arm, loader frame, ROPS Cab and engine frame. Other wheel loaders produced included 966D,E, 950E, 936,926,916. In 1981 130G Graders were added to the product range followed by 120G's. 518 and 528 were also produced.In 1989 Gough Gough & Hamer's Manufacturing Division closed which could have seen the end of the Fieldchief name if not for Goughs Christchurch Branch offering to employ staff from Manufacturing Division until 1994 when Gough Engineering was established. During this time Caterpillar buckets were manufactured under a revised licence agreement with Caterpillar which ended in 1996. Gough Engineering began building to its own drawings and currently offers over 130 different wheel loader and excavator buckets, Forestry Body kits and a wide range of custom products. By drawings the buckets ourselves we gained insight often taken for granted that allowed custom designed products to be produced economically.In 1990 the first Fieldchief Log Fork was design after consulting with a wide range of logging contractors a process that continues today to continually improve the product. In 1995 3D CAD drawings system was introduced followed by solid modelling and in-house CNC profile cutting in 1999. Backed by its history and manufacturing systems Gough Engineering is able to supply standard and custom designed products for Caterpillar machines. Fieldchief product now covers a wide range of application and machines.附录二：中文翻译轮式装载机的典型20 世纪 20 年代，小型农用拖拉机都配备的轻质材料 re-handling 装载机铲斗。

附录motor vehicles and the use of additional devicesSelf-loading vehicle arm (also known as hydraulic multi-energy vehicles and fighting for self-loading and unloading trucks) is characterized by separate cargo body fight with the implementation of a goods vehicle and a number of joint fighting operations, the cycle of transport, which can Self-loading dump containers, precast, machine equipment, bulk materials. The use of the car changed a number of operating the previous system under which the motor transport vehicle must be equipped with cranes or loaders, forklifts, loading and unloading as well as the need for workers in many ways, and saved the car and truck loading of the waiting time, increased turnover of motor vehicles and utilization, thus saving a great deal of manpower, material and financial resources to enhance economic efficiency.At present, the arm-type self-loading vehicle mainly used for mining of mineral aggregate loading, transport and dump, factory parts and rough handling and waste dumping, and construction waste from the handling, more clearance for the urban sanitation sector transportation of refuse. Arm as a result of self-loading cargo vehicles and body is separate from the fighting, using fixed-point garbage collection from time to time. Thus, in particular focal point for residents, as well as the market changes with the seasons the amount of waste sites. Dump it and refuse collection vehicles and forklift formula and flip-shaped seal trash dump trash garbage truck with a circular intake compared Yun, can effectively overcome the operation of the secondary dust and noise pollution.Arm-type truck with a low investment and low operating costs, maintenance and convenient, less noise, no secondary dust pollution, etc. Yang. The drawback is the size of the litter bucket, and can not be placed in the narrow streets, while in transit light foam filled refuse to take full advantage of easy self-loading vehicle arm, some cities have begun to establish a centralized garbage removal station, the use of small land transport equipment (such as human dump 3) refuse to focus on narrow streets inthe refuse collection points (floor), and then installed in self-loading arm dedicated junk car in the bucket, and then outward through the self-loading dump truck. It solved the problem of narrow streets could not place the issue of special garbage bucket. To address self-loading arm in the process of motor transport issues dusty materials, Special Purpose VehicleNanning has been designed and built two more effective anti-dust materials, additional devices and drivers can be manipulated to drive the entire operating room Process control device shaft. Are presented below.1, the activities of the vehicle hydraulic cargo canopyThis is to prevent the arm of a self-contained hopper car loading and unloading of materials from blowing out of the vehicle cargo canopy.The structure of the device as shown in Figure 1.Its working principle is: to promote the distribution of hydraulic valve joystick , hydraulic oil into the fuel tank on the cavity, the extended piston rod back, while driving the main arm to the car in front of swing in the tarp , under the canopy of the self and the main arm driven by its front-end articulated main arm , so that folding the sheeting under the lotus back then, under the support of opening up, in the cargo box form a closed top of the Ji Flip cover So that is not contained in the transportation field were filled. When the joystick struck the opposite side, the oil into the fuel tank of the cavity, the protruding rod back, while driving the main arm to the car in front of swing, in the sheeting , Peng-rod self-respect and the main arm Under the impetus of sheeting , Peng-rod and the main arm sequence neatly folded in boxes weeks before the edge, the canopy opened, is expected to facilitate loading and unloading cargo. The device structure is simple and easy to use, especially suitable for the shape of the size of cargo bucket inconsistent. Stacker hopper occasions too, such as good use of cover, fighting to prevent the material goods in the transportation out of dust.2, swing-wing self-loading automatic car coverThe new device structure as shown in Figure 2. When the arm-type self-loading vehicle operations, to manipulate the distribution of multi-way valve stem so that the car swings arms back, when Hopper was slowly lifting, at the same time, as the arm and fixed in the frame side on the small pulley gradually widened the distance that the rope the role of the length of stretch, this time through the wire rope to pull pulley and shaft , with the shaft link a fixed rear cover.Then gradually open up. When the pendulum swing back to the largest angle(that is unloaded or loaded Doo Doo), the rear cover has also opened up to the maximum point of view, are not to affect the loading or unloading hopper. Action in the above-mentioned process, as a result of the front cover through the connecting arm empty set of fixed beams in the arm , so the former self-covered under the arm placed in the vertical with the ground manipulation of self-handling car so that after the swing arm for operating the dumping of operations in the interior height of the front cover lifted.Automatically cover the wing structure is simple and no special operation when used with other types of enclosures covered compared to savings of time and energy, elegant shape, covered with a good hopper to prevent the material from blowing out during transport . Arm of the two self-loading and unloading of motor vehicles Therefore, the role of the former self-cover, the arm placed in the vertical with the ground before the front cover is always tight cover of the hopper. When the arm continues to swing back, the front cover self-lap, the left (on the icon in terms of) when shaft can not continue to lap, when the front cover with the arm before and after lifted up, placed in the largest arm angle, the front and back covers are lifted up, the shape of the wings to take off. At this point, you can do for fighting and has no effect on operations. When the manipulation of self-handling car so that after the swing arm for operating the dumping of materials, dumping hopper to achieve perspective, the rear cover open up to the point of view of a considerable discharge does not affect operation. The front cover as a result of self-hood has always been tight right hopper Department, the work does not affect the discharge. The front cover is designed to sway with the weight and to reduce operations in the interior height of the front cover lifted. Automatically cover the wing structure is simple and no special operation when used with other types of enclosures covered compared to savings of time and energy, elegant shape, covered with a good hopper to prevent the material from blowing out during transport . Arm of the two self-loading and unloading of vehicles attached devices, can effectively prevent materials from blowing out during transport, but their advantages and disadvantages. General self-loading arm in loading and unloading motor vehicles, the workers can only stand on the side of the body, handling agencies to manipulate the distribution of multi-way valve, so that the arm raise hopper or hopper dumping of materials. This appeared in a lot of inconvenience.浅谈自装卸汽车及附加装置的运用摆臂式自装卸汽车(也叫液压多能车和可换斗式自装卸车)的特点是货斗与车体分开，实行一辆车和数个货斗联合作业，循环运输，即能自装自卸集装箱、预制构件、整机设备、散装物料等。