Hanging device, crane, hanging method and multiplying power switching method of hook assembly

Abstract

The invention provides a hanging device, a crane, a hanging method and a multiplying power switching method of a hook assembly. The hanging device of the hook assembly comprises a hook assembly (10) and a support part (40), wherein the hook assembly (10) comprises a hook installing base (11) and a hook (13); the hook (13) is hinged with the hook installing base (11); the hook assembly (10) is arranged relative to the support part (40) in a vertical motion manner; and the support part (40) has a support state for supporting the hook assembly (10) and an avoiding state for avoiding the hook assembly (10). The hoisting multiplying power of the hook assembly can be conveniently switched and the assembling of a hoisting rope with the hook assembly is facilitated.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a mounting device for a hook assembly, a crane, a mounting method, and a magnification switching method. Background technique [0002] Such as Figure 1 to Figure 3 As shown, the lifting magnification of the jib tower crane generally has two speeds of magnification and multi-ratio to choose from. The switching of the lifting ratio is carried out through the ratio switching device. The magnification switching device includes a hook assembly 10' and a hoisting rope 20'. The hook assembly 10' includes a hook seat 11', a hook 13' and at least one first pulley 12'. The number of the first pulleys 12' depends on the magnification. Adjust differently. The first pulley 12' is pivotably arranged on the hook seat 11', and the hook 13' is hinged to the hook seat 11'. The first end of the lifting rope 20' has a fixed ring, which can be hinged with the hook seat 11' through the ...

AI Technical Summary

Problems solved by technology

[0005] In the process of switching the magnification, due to the heavy weight of the lifting rope 20', it needs to be realized by other lifting equipment, and the work efficiency is not high. During the whole process, the lifting rope 20' needs to be hoisted and pulled to the tip of the arm The 32' of the 30' fixing hole is also dangerous for the operator, and there are potential safety hazards

If it is in the process of high-rise building construction, due to the lack of lifting equipment for lifting the lifting rope 20', the switching of the magnification is very inconvenient

[0006] In addition, when the hoisting rope 20' is installed for the first time, the hoisting rope 20' must pass through the entire arm frame, go around the second pulley 31' of the arm tip 30' and hang down to the ground before it can be connected with the hook assembly. Assembling, the whole process is generally realized by human pulling, the operation process is time-consuming, laborious and inconvenient

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