Pulley system of variable power crane hoisting hook and integrated system thereof

Abstract

The invention discloses a pulley system of a variable power crane hoisting hook and an integrated system thereof. The pulley system comprises fixed pulley blocks, hook pulley blocks, a hook group, a steel wire rope and a winding winch, wherein the hook pulley blocks are connected onto the hook group; the hook group is configured with maneuverable pulley blocks which can be used as a component of crane pulley blocks, the maneuverable pulley blocks and the hook group adopt a detachable connection structure, a fixed frame of movable pulley blocks with the same number as that of the maneuverable pulley blocks is arranged at the part of the fixed pulley blocks or below the fixed pulley blocks, when the maneuverable pulley blocks are dismantled and released from the hook group, the maneuverable pulley blocks is automatically lifted by the steel wire rope to the fixed frame of the corresponding movable pulley blocks to be fixed, and at the moment, the positions of the fixed maneuverable pulley blocks and the paired fixed pulley are kept relatively unchanged. When the multiplying power of the pulley system is adjusted, the connecting pin and other parts of the maneuverable pulley blocks are only needed to be dismantled, so the workload is small, and the utilization rate of a crane is not influenced.

Description

Technical field [0001] The present invention relates to a hoisting hook block system with variable magnification of a crane. Specifically, the magnification of the hoisting hook block of a crane can be changed and adjusted to adjust different lifting weights and different lifting hooks. Rise speed. Belongs to lifting and transporting machinery. Background technique [0002] The magnification of the hoisting hook block of the existing crane is generally unchanged. Usually, the magnification of the hoisting hook block is selected according to the maximum lifting weight and speed of the crane, but in heavy cranes, the maximum lifting weight is often The least used ones are only occasionally used, and most are used less than a few times a year. However, lower lifting weights are often used, but the speed is limited by the rate of the hoisting hook block. The crane's efficiency cannot be fully utilized, and the power of the lifting motor cannot be fully utilized, resulting in waste....

AI Technical Summary

Problems solved by technology

[0002] The magnification of the lifting hook block of the existing cranes is generally unchanged, and the magnification of the lifting hook block is usually selected according to the maximum lifting capacity and speed of the crane, but in heavy cranes, the maximum lifting capacity is often Least used, only occasionally, most used less than a few times a year

However, the lower lifting capacity is often used, but the speed is limited by the magnification of the lifting hook block. The effect of the crane cannot be fully utilized, and the power of the lifting motor cannot be fully utilized, resulting in waste.

[0003] The adjustment of the existing crane hoisting hook pulley magnification is to rewind the steel wire rope. Using this method, the workload of the operator is very large, which affects the utilization rate of the crane, and is often not accepted by users.

And because the magnification is reduced, the extra wire rope needs to be stored in the hoisting winch, so the requirements for the rope capacity of the hoisting winch are increased, and the cost is also increased

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