1台石川岛IPD-90型打桩机在施工中,主卷扬离合器经常出现打滑、卷扬无力故障,有时还突然发生溜锤现象。该打桩机的卷扬系统由主卷扬5、副卷扬7、卷扬马达1、联轴器2、传动轴3、小齿轮4、大齿轮6等组成,如图1所示。主卷扬主要用于提升桩锤,副卷扬主要用于桩的提升和就位。主卷扬卷筒和副卷扬卷筒装在同一根传动轴上,由1个卷扬马达带动 1 Ishikawajima IPD-90 type pile driver During construction, the main winch clutches often appear skidding, hoisting weak failure, and sometimes also a sudden slide hammer phenomenon. The hoisting system of the pile driver is composed of a main winch 5, an auxiliary winch 7, a hoisting motor 1, a coupling 2, a transmission shaft 3, a pinion 4, a bull gear 6 and the like, as shown in FIG. 1. The main winch is mainly used to enhance the pile hammer, Vice winch is mainly used for lifting and placing the pile. The main winch drum and vice winch drum mounted on the same drive shaft, driven by a winch motor