车架是整车的基础．履带拖拉机一般采用全梁式车架，拖拉机的零部件都安装在这个框架上，它承受着拖拉机的重量和行走系统运行中产生的阻力和冲击力。车架产生缺陷后将引起其它零部件、总成之间相互位置关系变化，工作异常，磨损加剧．甚至发生大事故。如东方红-802（75）拖拉 Frame is the vehicle basis. Crawler tractors generally use a full beam frame, tractor components are installed in this frame, it is to bear the weight of the tractor and walking system running resistance and impact generated. After the frame defects will cause other parts, assembly changes in the relationship between the position of each other, work abnormalities, increased wear and tear. Even a big accident occurred. Such as the East Red -802 (75) drag