平板夯论文
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振动平板夯 学 院(系): 专 业: 学 生 姓 名: 学 号: 指 导 教 师: 评 阅 教 师: 完 成 日 期:
大连民族学院 振动平板夯
I 摘 要
在道路和建筑施工中都要对基础和路面进行压实,压实作业是施工中的一个重要组成部分。有效的压实能显著提高基础或路面的承载能力和稳定性,提高不渗透性,消除沉陷。压实质量如何,对道路和建筑的安全和寿命有着决定性的影响。如何有效的提高压实度已经成为一个需要迫切解决的问题。压实机械有多种分类方法,按工作装置的外形可分为:圆柱形,平板型,多边形,凸块形,羊角形等;按载荷可分为:静作用,振动作用,冲击作用等;按驱动方式可分为:自行驱动式,拖动式等;按压实原理课分为:静力压实,振动压实,震荡压实,真空压实,夯实,冲击压实等;振动平板夯主要用于夯实颗粒之间的粘结力及摩擦力较小的材料,如河沙、碎石、沥青等。其主要工作参数有:工作平板底面面积、整机质量、激振力、激振频率的影响。
关键词: 激振器 ; 轴; 齿轮; 带轮 振动平板夯
II Abstract
In the road and building construction should be carried out on the base and pavement compaction,Compaction is an important part of the construction。Effective compaction can significantly improve the bearing capacity and stability of foundation or pavement,improve impermeability,the elimination of subsidence。The compaction quality,have a decisive influence on the safety and service life of roads and buildings。How to effectively improve the degree of compaction has become a urgent problem to solve。Compaction machinery has a variety of classification methods,according to the working device's shape can be divided into:cylindrical, flat, polygon, convex block, claw shape and so on;According to the load can be divided into:the static effect,vibration effect,effect of impact;According to drive mode can be divided into:self-driving type,drag type;According to the compaction principle course into:static compaction,the vibrating compaction,shock compaction,vacuum compaction,tamping,impact compaction;Vibrating plate ram is mainly used for solid particles between the adhesive force and less friction material,such as sand, gravel, asphalt etc。The main working parameters:a flat bottom surface area of work,the quality of the machine,exciting force,effects of vibration frequency。
Key words:vibration exciter,shaft,gear wheel,pulley 振动平板夯
III 目 录 摘 要..................................................................................................................... I Abstract ................................................................................................................. II 第一章 振动平板夯的分类、作用及特点.......................................................... 1 1.1 平板夯的分类......................................................................................... 1 1.2 平板夯的作用及工作原理..................................................................... 1 1.3 平板夯的特点......................................................................................... 1 第二章 平板夯带和带轮设计.............................................................................. 2 ................................................................................................................ 2 2.1 电动机的选择......................................................................................... 2 2.2 V带设计 ............................................................................................... 2 2.2.1 确定计算功率Pca ....................................................................... 2 2.2.2 选择带型...................................................................................... 2 2.2.3 确定带轮基准直径1dd并验算带速v。 ..................................... 2 2.2.4 确定V带中心距a和基准长度Ld ........................................... 3 2.2.5 验算小带轮上包角1 ................................................................. 3 2.2.6 计算带根数z ............................................................................... 3 2.2.7 V带初拉力最小值min)(F ............................................................ 3 2.2.8 轴压力Fp .................................................................................... 4 2.3 带轮设计................................................................................................. 4 2.3.1 带轮材料...................................................................................... 4 2.3.2 带轮基本尺寸.............................................................................. 4 第三章 激振器设计.............................................................................................. 5 3.1 轴的设计................................................................................................. 5 3.1.1初定最小轴径............................................................................... 5 3.1.2 轴各段直径和长度...................................................................... 5 3.1.3 轴强度校核.................................................................................. 5 3.2 齿轮设计................................................................................................. 7 3.2.1 选择齿轮类型、精度等级、材料、齿数、.............................. 7 3.2.1 齿面接触强度计算...................................................................... 7 3.2.2 齿根弯曲强度.............................................................................. 8 3.3 轴承的选择与校核................................................................................. 9 3.3.1 轴承的选择.................................................................................. 9 3.3.2 轴承校核.................................................................................... 10 3.3.3 轴承的润滑与密封.................................................................... 11