液压传动的起升机构一般由液压马达、减速器、卷筒、制动器等组成。随着液压传动起重机的高速发展,对液压起升机构提出了愈来愈高的要求。要求起升机构体积小,重量轻,工作平稳、可靠,效率高,并能实现多种起升速度。起升机构的结构形式较多,但目前国内液压起升机构多为高速马达通过—普通圆柱齿轮减速器,瓦块或带式制动器 The hydraulic drive lifting mechanism is generally composed of a hydraulic motor, a speed reducer, a reel, a brake, and the like. With the rapid development of hydraulic transmission cranes, more and more high requirements have been put on the hydraulic lifting mechanism. The hoisting mechanism is required to be small in size, light in weight, stable, reliable, and highly efficient, and capable of achieving a variety of lifting speeds. Lifting mechanism has many structural forms, but at present the domestic hydraulic lifting mechanism is mostly high-speed motor pass-common cylindrical gear reducer, pad or band brake