Demolition construction method for large-span cable crane adjacent to railway business line

A construction method, technology of business lines, applied in the direction of cable cranes, clockwork mechanisms, load-hanging elements

Active Publication Date: 2020-10-13
CHINA RAILWAY SIXTH GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the technical problem of how to safely and quickly dismantle the large-span cable crane on the r...

Method used

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  • Demolition construction method for large-span cable crane adjacent to railway business line
  • Demolition construction method for large-span cable crane adjacent to railway business line
  • Demolition construction method for large-span cable crane adjacent to railway business line

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Embodiment Construction

[0040] refer to Figure 1-23 , a construction method for dismantling a large-span cable hoist adjacent to a railway business line according to the present invention will be described in detail.

[0041] A large-span cable crane demolition construction method adjacent to the railway business line is characterized in that it comprises the following steps:

[0042] Step 1: First remove the hoisting rope 1. Before removing the hoisting rope 1, move the cable hook 2 and the crane 3 to the inspection platform on the top of the near-end tower 4, and first connect the hoisting rope 1 to the near-end tower. The frame 4 is connected with a steel wire rope to prevent slipping, and the pulley block 6 matched with the hoisting rope 1 is removed, and then the hoisting rope 1 is connected with the hoisting rope of the first hoist at the top of the near-end tower frame 4, and the first hoist is a 5T hoist , to disconnect the hoisting rope 1 and the near-end tower 4 is to untie the steel wire...

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Abstract

The invention belongs to a demolition construction method of cable cranes, in particular to a demolition construction method for a large-span cable crane adjacent to a railway business line, and solves the technical problem in the background art. The method comprises the following steps: firstly, a hoisting rope 1, a traction rope, a bearing cable 9 and a working rope 10 are demolished stepwise, and then parts above 100 m of a super high-rise tower are disassembled by a shaking derrick mast 14; the 80-100 m part is disassembled by a jib of a truck crane 15; and the part below 80 m is demolished as a whole by a main jib of the truck crane 15. The construction method is special for demolition of large-span cable cranes on the railway business lines with short demolition period and poor working environment, the super-high-rise tower system is divided into three parts to be demolished, the three parts are demolished in different means, demolition of conventional single-layer loose parts isadjusted to be demolition of whole demolition stepwise, so that working efficiency is improved, a large number of high-altitude operations are switched to ground work, safety risks are reduced to thegreatest extent, railway blockade points are reduced, and safety of railway business lines is ensured.

Description

technical field [0001] The invention relates to a construction method for dismantling a cable crane, in particular to a construction method for dismantling a large-span cable crane adjacent to a railway business line. Background technique [0002] With the development of the economy and the improvement of environmental protection requirements, long-span steel pipe arch bridges have been used more and more when crossing large rivers, rivers, and deep valleys. The main construction of the steel pipe arch mainly relies on cable hoisting. [0003] The large-span cable crane for railway business lines mainly includes hoisting rope 1, traction rope, load-bearing rope 9 (main rope), crane 3, cable crane hook 2 and super high-rise tower system, such as figure 1 As shown, the super high-rise tower system includes a near-end tower 4 and a far-end tower 5; (its height exceeds 100m, which belongs to a super high-rise building), and the hoisting rope 1 is provided with a hook for adjusti...

Claims

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Application Information

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IPC IPC(8): B66C21/00B66C15/00B66D1/28
CPCB66C21/00B66C15/00B66D1/28B66C2700/011
Inventor 王建军王振刘武周斌张建新韩国震艾国文闫帅贾效搏冯应龙焦晓宇张军伟王涛王露刘彬彬
Owner CHINA RAILWAY SIXTH GROUP
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