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前言自卸汽车是常用的运输机械,车厢配有自动倾卸机构的汽车,又称为翻斗车、工程车,由汽车底盘、液压举升机构、取力机构和货厢组成。在土木工程中,常同挖掘机、装载机、带式输送机等联合作业,构成装、运、卸生产线,进行土方、砂石、松散物料的装卸运输。由于装载车厢能自动倾翻一定角度卸料,大大节省卸料时间和劳动力,缩短运输周期,提高生产效率,降低运输成本,并标明装载容积。按底盘承载能力可分为轻卡系列自卸、中吨系列自卸和大吨位系列自卸;按驱动形式可分单桥自卸、双桥自卸、前四后八自卸、前四后十等不同系列车型;按卸载液压举升机构不同可分为单顶自卸和双顶自卸。其中后门箱启闭在装卸货物中起到很重要的作用。一、几种后箱门启闭方案后厢门打开机构的要求是当车厢翻转卸货时,后厢门随之联动打开,卸货完毕,车厢恢复水平状态,后厢门也随之可靠关闭。当车厢翻转一定角度时,厢门也打开相同的角度。由此可以进行机构设计。
Foreword Dump cars are commonly used transport machinery, cars with automatic dumping mechanism cars, also known as dump trucks, construction vehicles, from the chassis, hydraulic lift mechanism, take-off mechanism and cargo compartment. In civil engineering, often with excavators, loaders, belt conveyors and other joint operations, constitute loading, transportation, unloading production lines, earthwork, sand, loose materials handling loading and unloading. As the loading compartment can be tilted automatically dump a certain angle, which greatly saves the unloading time and labor, shorten the transport cycle, improve production efficiency and reduce transportation costs, and indicate the loading capacity. According to the carrying capacity of the chassis can be divided into light truck series dump, tons of dumping and large-tonnage series of dumping; can be divided by the drive form of single-bridge dump, double-bridge dump, the first four after eight dumping, the first four after ten Such as different series of models; according to unloading hydraulic lifting mechanism can be divided into single-top dump and double-top dump. Among them, the opening and closing of the rear door box plays a very important role in the loading and unloading of goods. First, several kinds of rear door opening and closing programs Rear door open mechanism requirements is that when the car flip unloading, the rear door along with the linkage open, unloading is completed, the car restored to a state of state, the rear door also will be reliably closed. When the car flip a certain angle, the car door also opened the same angle. From this it is possible to design the mechanism.