关于改善小修用修井机操作性能的建议

取消油井小修用修井机的绷绳可带来许多好处，只要采取相应的措施便可实现。伸缩式井架应设置液压顺序回路或机械互锁机构，以防止误操作。空游车实现快速下滑可避免诸多弊端，生产厂家可从减少滚筒、天车、游车等的转动惯量；刹车与刹车鼓能完全分离；减少旋转部件的转动阻力和改善旋转部件的润滑等方面进行精心设计。滚筒刹车可以借鉴汽车的行车制动和驻车制动；采用两头活端结构的滚筒刹带，以实现迅速、有效的制动和延长刹带寿命。

Suggestions for improving service behaviour of well service rig

Abolishing the guyline on a well service rig may bring much benefit. Hydraulic sequential cilcuit or mechanical mutual interlocking gear should be attached on a flexible mast to avoid misoperation. As for the design of travelling block,qUick descending of the load－free crown block should be realized. The drum brake should he designed with refelence tothe brake lnechanism of automobiles, and the drum brake ribhon with two moving ends should be adopted to achieveopick and effective braking and prolong the service life of the brake ribbon.