摘要
 
刹车系统伴随着汽车的发展，也在快速发展着，而制动器作为刹车系统的执行系统的一部分，其安全性也越来越受到现代人们的重视。货车的制动系统多为气压制动，由于货车质量很大，所以货车的制动器质量一般也很大，在考虑制动系统安全性的同时，如何做到制动器结构的轻量化和选材的绿色化也正在成为个汽车厂的研究方向。
本次毕业设计，以重型货车为设计对象，对制动系的发展做了简单叙述，对货车制动器的结构件进行了设计，并通过三维软件进行了建模、运动仿真和有限元分析，检验了此次结构设计的合理性；然后使用CAXA电子图板绘制了二维零件图和装配图。
关键词：气压制动；制动器；结构设计；运动仿真；有限元分析
Abstract
 
Along with the development of automobile, brake system is also developing rapidly. As a part of brake system, the safety of brake system is paid more and more attention by modern people. The brake system of the freight car is mostly pneumatic brake. Because the quality of the truck is very large, the brake quality of the truck is generally very large, and the safety of the braking system is considered at the same time. How to achieve the light weight of brake structure and the greening of material selection is becoming the research direction of automobile factory.
In this graduation design, taking heavy truck as design object, the development of brake department is briefly described, the structure of truck brake is designed, the pneumatic drive mechanism is designed, and the motion simulation is carried out through three-dimensional software. The rationality of the structural design is tested, and then two dimensional part drawing and assembly drawing are drawn with CAXA electronic drawing board.
Key words: pneumatic brake; structure design; motion simulation；finite element analysis
 
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