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Tower crane dismantling method

A technology of tower crane and jib, applied in the directions of crane, transportation and packaging, can solve the problems of low applicability and complex structure, and achieve the effect of improving work efficiency

Inactive Publication Date: 2021-01-29
江苏天安检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of complex structure and low applicability of the boom dismantling method of the crane in the prior art, and propose a tower crane dismantling method

Method used

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Examples

Experimental program
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Embodiment

[0024] Example: refer to Figure 1-4 , a tower crane removal method, comprising the following steps:

[0025] S1. Removal of the balance weight: fix the lifting trolley on the root of the balance arm 1, lift and disassemble the balance weight with the help of a crane using a wire rope, first remove the connecting plate installed on the balance weight, and then follow the reverse order of the counterweight, in order Remove the balance weight;

[0026] Among them, the width between the connecting plates is determined according to the size of the pulley, and the bushing in the middle is fixed with M16 bolts, and the bolt length is reserved for 100mm;

[0027] S2. Removal of the boom 7: lift the boom 7 to be dismantled, then remove the two lower pins, replace the original pins with two M16X150 bolts, and then pull out the upper chord pins, and use them under the load of the wire rope to make the The boom 7 to be disassembled slowly descends and hangs it on the two pin shafts of ...

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Abstract

The invention relates to the technical field of cranes, in particular to a tower crane dismantling method. With the tower crane dismantling method, the problems of complex structure and low applicability of a crane boom dismantling method in the prior art are solved. The method comprises the following steps of first, balance weight dismantling, wherein a hoisting trolley is fixed to the root partof a crane boom, and balance weights are dismantled by using a steel wire rope by virtue of a hoist, connecting plates mounted on the balance weights are dismantled firstly, and then the balance weights are dismantled in sequence according to the opposite sequence of the balance weights; second, cargo boom dismantling; third, cargo boom dismantling and placement, wherein two hinge pins of a lowerchord on the cargo boom to be dismantled are dismantled by utilizing a lifting hook connected to a steel wire rope, and then the dismantled cargo boom is hoisted to the ground by utilizing the liftinghook; and fourth, supporting arm dismantling, wherein a supporting arm installed on the tower crane can be utilized to enable the supporting arm to be used in cooperation with a short supporting rodand a long supporting rod, and high-altitude dismantling is completed on the balance arm under the effect that a motor drives winding of the steel wire rope.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a method for dismantling a tower crane. Background technique [0002] When dismantling a large tower crane on the top of a super high-rise building, the process is relatively simple and the construction period is short. The general dismantling method is: after the construction of the large tower crane completes the building structure, find a corresponding flat position on the top, and directly arrange a small tower crane and A roof crane that can be dismantled by itself can be dismantled in order "from big to small", without any replacement or auxiliary measures. However, such methods and process steps are very suitable for large-scale tower crane demolition under the engineering environment characteristics of simple building top structure, flat structure plane, and small shrinkage of building facade. [0003] However, the above demolition method cannot satisfy the tower crane de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/64B66C23/16
CPCB66C23/64B66C23/166B66C2700/03
Inventor 陈林邹文丽陈文王振飞
Owner 江苏天安检测技术有限公司