lever block meaning in English

闭塞杆
杠杆式拉力滑车
手扳葫芦
握柄滑轮

Manual lever block
手拉葫芦
This paper presents the principles of the brakes on chain and lever blocks , analyzes the forces , and offers the design method
摘要介绍手拉葫芦与手扳葫芦制动器的工作原理，分析了制动器的受力情况，介绍了制动机构设计的方法和注意事项。
Model hsh lever block is nover lever block . and adopted advanced construction , easy to operate and it can quickly spot bottom hook when there is no load , so that it can shortten the time of operation
Hsh型手扳葫芦是一种较新颖的手扳葫芦，采用先进结构，操作方便，空载时迅速调整下吊钩的位置，缩短操作时间。