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Rope-winding method for light folding arm type tower crane lifting-folding arm mechanism

A technology of hoisting wire rope, arm type, applied in the field of hoisting and transportation

Inactive Publication Date: 2007-11-28
李海青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of re-threading and rewinding the steel wire rope when the light-duty folding-arm tower crane performs folding-arm conversion

Method used

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  • Rope-winding method for light folding arm type tower crane lifting-folding arm mechanism
  • Rope-winding method for light folding arm type tower crane lifting-folding arm mechanism
  • Rope-winding method for light folding arm type tower crane lifting-folding arm mechanism

Examples

Experimental program
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Embodiment Construction

[0012] In Fig. 1, the wire rope of the lifting-folding arm mechanism goes around the winch 1, the guide pulley II5, the guide pulley III6, the angle pulley 16, the hoisting pulley 9 on the luffing trolley 9, the hook pulley 10, and the guide pulley in turn IV13, guide pulley V14, guide pulley VI15, folding arm pulley block 8, the end is fixed on the guide pulley I4.

[0013] In the horizontal working state shown in Figure 2, the knuckle pulley 16 is sent to the root of the rear arm 7, and the wire rope at the end of the forearm 12 is fixed by the wire rope fixing device 11, so the tower crane is the same as the original light knuckle-arm tower crane when it is working. the same.

[0014] When performing folding arm conversion, send the angled pulley to the root of the forearm and install it, start the hoisting mechanism to make the hook 10 contact with the luffing trolley 9, unfix the wire rope at the end of the forearm, continue to start the hoisting mechanism, the rear arm 7...

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Abstract

The present invention is cable winding method for hoisting-arm folding mechanism of light duty folding arm type tower crane. The steel cable has the end wound through the guide pulley IV in the tip of the front arm and fixed onto the guide pulley I of the arm folding pulley block; and specifically, the steel cable is wound successively through the hoisting drum, the guide pulley II, the guide pulley III, the beveling pulley, the hoisting pulley of the amplitude varying bogie, the hook pulley, the guide pulley IV, the guide pulley V, the guide pulley VII and the arm folding pulley block before the end is fixed onto the guide pulley I. During hoisting, the steel cable is fixed to the front arm; and during folding the arms, the steel cable fixation is released, the hoisting mechanism is operated to hoist the front arm to certain angle and the back arm guy cable is regulated, so that the tower crane enters the arm folding state, having no need of re-winding the steel cable.

Description

technical field [0001] The invention relates to a new rope winding method for a lifting-folding arm mechanism of a light folding arm tower crane, which belongs to the lifting and transportation technology. Background technique [0002] The product structure of tower cranes is closely related to the demand for building construction. The characteristics of the development of my country's construction industry are highlighted in two aspects. On the one hand, urban buildings are developing towards high-rise super-high-rise buildings, and the application of large-scale prefabricated components is becoming more and more extensive; on the other hand, rural areas And small town buildings have developed from single-story structures in the past to 2-3-story or 3-6-story buildings, coupled with the transformation of old cities in cities, the development of tower cranes has also evolved in two directions, that is, to large-scale and miniaturization. For buildings with a construction floo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/62
Inventor 张明勤李海青韩立芳臧德江石海龙
Owner 李海青
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