建筑用翻斗车的液压系统如图1所示。它能完成空载翻斗、回位以及重载翻斗动作,其不足之处在于:重载回位时,由于回油路畅通无阻,对车架的冲击力是相当大的,严重地影响了整车的使用寿命。我国目前的装载一般是以人力为主,为了节省人力,应尽量降低装料高度,因而常常使斗体倾翻一定角度进行装料,然后重载回位。卸料时,虽升起了斗体,但因某种客观因素,不允许翻斗卸料。这就必须解决重载回位这个问题,以减轻对车架的碰撞。 The hydraulic system of a dump truck for buildings is shown in Figure 1. It can complete dump dump, return and heavy dumping action. The shortcomings are: When the heavy load is returned, due to the unimpeded return road, the impact on the frame is quite large, seriously affecting the whole The service life of the car. China’s current loading is generally based on manpower. In order to save manpower, it is necessary to reduce the loading height as much as possible. Therefore, the bucket is often tilted over a certain angle for loading and then loaded back. During discharge, although the bucket is raised, due to some objective factors, it is not allowed to unload the bucket. This must solve the problem of heavy load return to reduce the impact on the frame.