近几年我国汽车专用化的要求越来越迫切 ,专用车产量每年都有一定的增幅。但是 ,专用车生产所需的材料基本上仍是通用材料 ,这对我国专用车的质量和成本都有一定的制约。目前重型自卸车是载货车中占比例最大的一种专用车型。后倾自卸车上装部分副车架纵梁和车厢底纵梁 ,多数采 In recent years, China’s auto-specific requirements more and more urgent, special vehicle production increases every year. However, the materials required for the production of special purpose vehicles are basically still common materials, which have certain restrictions on the quality and cost of special purpose vehicles in our country. At present, heavy duty dump trucks are the largest proportion of trucks in a special type of vehicle. Rear dump truck part of the sub-frame longitudinal beam and car at the end of the longitudinal beam, the majority of mining