随着液压汽车起重机的发展,对起升机构的性能要求越来越高,不仅重量要轻,工作可靠,而且还要求调速。目前我国汽车起重机的起升机构还不能完全适应新技术发展的需要,绝大多数老产品主要采用下列二种结构形式: 一、单卷筒其构造形式如图1所示,动力从液压马达1,通过联轴器2 减速器4传到卷筒5。制 With the development of hydraulic truck cranes, the performance requirements for hoisting mechanisms are getting higher and higher, not only lighter in weight but also more reliable in operation, but also require speed regulation. At present, the lifting mechanism of China’s auto cranes cannot fully meet the needs of the development of new technologies. The vast majority of old products mainly adopt the following two structural forms: 1. The structure of a single drum is shown in Figure 1. Power is from a hydraulic motor. Through the coupling 2 reducer 4 to the reel 5. system