The invention discloses a variable-magnification lifting hook pulley block structure which comprises a lifting steel wire rope, an arm frame end part, a first pulley, a lower pulley block, a second pulley, a balancer, a third pulley, an upper pulley block, a fourth pulley, a wedge sleeve and a lifting hook mounted in the middle of the bottom of the lower pulley block. The problems that the height of the tower crane is too high, the rope capacity of a lifting winch cannot meet the four-multiplying-power working condition, and the lifting capacity cannot be met under the two-multiplying-power working condition are solved; and the operation efficiency and the application range of the tower crane are improved.
本申请公开了一种变倍率吊钩滑轮组结构,包括起升钢丝绳、臂架端部、第一滑轮、下滑轮组、第二滑轮、平衡器、第三滑轮、上滑轮组、第四滑轮、锲套以及安装于所述下滑轮组底部中间的吊钩。本发明兼顾了塔机高度过高,起升卷扬机容绳量不能满足4倍率工况,而2倍率工况又不能满足起重量的问题;提高了塔机的作业效率和使用范围。
Variable-magnification hook pulley block structure
一种变倍率吊钩滑轮组结构
23.06.2023
Patent
Elektronische Ressource
Chinesisch
Variable-magnification lifting hook trolley mounted on tower crane
Europäisches Patentamt | 2021
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