摘  要
    随着国民经济的持续发展，机械工业也在不断地发展着，各种设备都在不断地发展，创新着。特别是在机动车辆方面，半自动牵引车车桥的应用非常广泛，在一些特定的工作场合，半自动牵引车车桥体积小，安装稳定，价格成本低廉很受欢迎，根据市场调查发现，半自动牵引车车桥必须满足当今人们对汽车制造方面的灵活性操控等需求。
目前市面上的半自动牵引车车桥大多都是采用传统的结构，在某些特定的区域，这种结构形式的半自动牵引车车桥非常不受欢迎。由于以往的半自动牵引车车桥采用传统的结构形式，这样就造成传动精度不好控制，保养维护费用较高;同时存在一定的安全隐患。因此，对整车的安全性要求较高，车辆行走时也会给工作人员带来强烈的震动，使得机动车驾驶员很不舒服。虽然传通的半自动牵引车车桥精度较高，质量较好，但是价格也较昂贵，对于一般的用户难以接受。所以研究一种新式的半自动牵引车车桥势在必行！
本文介绍了半自动牵引车车桥的结构组成、工作原理以及主要零部件的设计中所必须的理论计算和相关强度校验，以及对其结构进行创新设计，该半自动牵引车车桥的优点是传动链短、效率高、易加工、使用和维护都很方便，较适合在恶劣的环境下工作。
关键词：半自动牵引车车桥；结构；振动；工作 
 Abstract

This graduation design is the optimization design of driving roller conveyor, first on the driving roller type conveyer is summarized; then analyzed the selection principle and calculating method of driving roller conveyor; then calculated based on these design criteria and abase is designed; then checked on the main parts selected conveyor. Is the drive roller conveyor consists of four main parts: driving device, tension device, middle rack, and the moving part. Finally, a simple description of the installation and maintenance of transport. At present, the drive roller conveyor is moving towards long distance, high speed, low friction direction, air cushion conveyor in recent years is one .
In the design, driving roller type conveyer manufacture and application, at present our country compared with foreign advanced level there are still large gaps, domestic in the design and manufacture of driving .This design is the optimization design of driving roller conveyor.
Keywords：Driving roller ;Crankshaft;Processing craft;Significance
目  录