Multi-multiplying power balance type variable multiplying power device

Abstract

The invention discloses a multi-multiplying power balance type variable multiplying power device which comprises a fixed pulley, a guide pulley, a six-multiplying power movable pulley block, a two-multiplying power movable pulley block, a hook assembly and a balance beam, wherein the fixed pulley is mounted on a front trolley of a crane boom; the guide pulley is mounted on a rear trolley of the crane boom; the six-multiplying power movable pulley block is hung right under the fixed pulley through a steel wire rope; the two-multiplying power movable pulley block is hung right under the guide pulley through another steel wire rope; the hook assembly consists of a hook and a hook plate. Flexible alternation of multiple multiplying powers is achieved with different combinations of the hook assembly, the two multiplying power movable pulley blocks having different multiplying powers, and the balance beam, different requirements of multiple crane loads such as heavy-load low speed and light-load high speed in practical operation can be met, the lifting functions of a crane can be greatly enriched, and the lifting cost can be lowered; in addition, since the movable pulley blocks of different multiplying powers, the balance beam and the hook assembly are connected through hinge pins, the multi-multiplying power balance type variable multiplying power device is flexible to assemble and disassemble and convenient to use.

Description

technical field [0001] The invention relates to a balanced variable magnification device with even multiples and multiple magnifications for a hoisting machine. Background technique [0002] With the gradual development of hoisting machinery in the direction of large-scale, professional, and high-efficiency, in order to adapt to the characteristics of large lifting capacity of large-scale machinery, the current hoisting machinery mostly adopts high-magnification and low-speed. However, if only high magnification and low speed are satisfied, the lifting equipment will be cumbersome and inefficient. In order to give full play to the effective power of large-scale hoisting equipment, improve the use efficiency, and achieve the design goals of heavy-load low-speed, light-load high-speed, energy saving and environmental protection, large-scale hoisting equipment should adopt variable magnification pulley block device. In this way, the high-magnification pulley block device is us...

AI Technical Summary

Problems solved by technology

However, if only high magnification and low speed are satisfied, the lifting equipment will be cumbersome and inefficient.

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