25吨前顶自卸车车厢与举升机.doc

广西科技大学鹿山学院本科生毕业设计（论文） 广西科技大学鹿山学院 毕业设计（论文） 题 目： 25吨前顶自卸车车厢与举升机 机构设计 系 别： 汽车工程系 专业班级： 姓 名： 学 号： 指导教师： 职 称： 二〇一六 年 三 月 二十六 日  PAGE \* MERGEFORMAT 4 摘要 自卸汽车是专用汽车的一类，自卸汽车是依靠自己发动机的动力来驱动液压举升机构，把车厢举升到一定角度卸货，还可以通过车厢自重复位。 由于中国建设速度的高速发展，对自卸汽车的需求量不断加大。自卸汽车作为公路运输车辆，主要在工地运输泥土、砂石，在矿场运输煤炭等。自卸汽车和挖掘机配和工作，就可以实现装货、运货、卸货。节省大量时间，减轻劳动力，提高生产效率。所以自卸汽车在进几十年发展迅速，自卸汽车发展到现在的种类越来越多。自卸汽车的产量也不断提高。 自卸汽车有轻、中、重型自卸车。本次设计的课题是25吨前顶自卸车车厢与举升机构设计，属于重型自卸车。以二类底盘为基础，进行设计。本次课题的设计的主要有以下几个方面。确定自卸汽车总体设计方案;副车架结构型式、尺寸设计；副车架截面形状及尺寸的设计；副车架前端形状的设计；车厢结构型式、尺寸设计；车厢的材料选择；举升机构的设计及受力分析等；最后设计出一款能够承载25吨的前顶自卸汽车。 关键词：自卸汽车；二类底盘；副车架；车厢；举升机构  Abstract Dump trucks are a class of special purpose motor vehicle. Dump trucks drive the hydraulic lifting mechanism on their own engine power , lift the car to a certain Angle to unload , It can also reset by self weight through the carriage. Due to the high speed development of Chinas construction , the demand of Dump trucks will be increased. Dump trucks as road transport vehicles, mainly transport mud, sand in the site and transport coal in the coal mine. If dump trucks and excavators work together, they can realize loading, shipping, unloading, save a lot of time, reduce Labour and improve production efficiency. As a result, the dump trucks has developed rapidly for recent tens of years，there are more and more kinds of dump trucks appeared after long time development. The output of dump truck is increasing as well. There are light, medium and heavy types of dump trucks. This design topic is the design of a 25 tons of sincipital dump truck carriage and lifting mechanism. it belongs to the heavy dump truck. Take the second class chassis as the foundation to design. The design of this topic mainly has the following several aspects. Determine the overall design scheme of the dump truck. The structure t