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Construction method for using parallel double-mast half-turning method to hoist large box type derrick

A construction method and double-mast technology, applied in the direction of drilling equipment, earthwork drilling, support devices, etc., can solve the problems of high cost of hoisting equipment, large amount of equipment usage, and long construction period, so as to improve efficiency, reduce consumption, reduce input effect

Inactive Publication Date: 2014-03-05
CHINA COAL FIRST CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages of large amount of equipment used, long-distance transportation of masts, sinking winches, wire ropes, tackles, shackles and other hoisting equipment, high cost, and long construction period.
Long construction period, high construction cost and low efficiency

Method used

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  • Construction method for using parallel double-mast half-turning method to hoist large box type derrick
  • Construction method for using parallel double-mast half-turning method to hoist large box type derrick
  • Construction method for using parallel double-mast half-turning method to hoist large box type derrick

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Embodiment Construction

[0055] As shown in the figure, the construction method of lifting a large box-type derrick by the side-by-side double-mast semi-turning method, the process steps are: Construction preparation, Drilling winch fixed, pair of masts, rigging set, the mast rises, hoisting of the main inclined frame, mast removed, stand hoisting, clean up the construction site, Ancillary facilities installation.

[0056] The hoisting steps of the main inclined frame include:

[0057] Raising the head of the main inclined frame — Slowly raise the head of the main inclined frame so that the main inclined frame is completely detached from the assembled steel frame and then stop hoisting, seal the sinking winch, stop for 1 hour for safety inspection, and then lift after confirming that it is safe;

[0058] Start the main crane sinking winch of the inclined frame, and stop lifting when the main inclined frame is hoisted to an angle of 40-45° with the ground;

[0059] Pull the si...

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Abstract

The invention discloses a construction method for using a parallel double-mast half-turning method to hoist a large box type derrick. The method includes the steps of firstly, construction preparation; secondly, sinking winch fixation; thirdly, mast fitting up; fourthly, lasso setting; fifthly, mast erecting; sixthly, main oblique derrick hoisting; seventhly, mast removing; eighthly, vertical derrick hoisting; ninthly, construction site cleaning; tenthly, ancillary facility mounting. Compared with the prior art, the method has the advantages that the height of each mast can be lowered, the axial pressure borne by each mast is reduced, and the section area of each mast is reduced; the masts are vertically disposed on two sides of a lifting center of the derrick, the two masts are reliably connected through rigid connection, no adjusting pulley blocks are needed between the two masts; a main traction rope is tied to the bottom feet of the derrick and serves as the mast traction rope along with a main lifting rope, the original mast traction rope is omitted, and equipment and steel wire rope investments are reduced; the pulley block for backward pulling is changed into a single long rope and a short pulley set, the use amount of steel wire ropes is reduced greatly, and efficiency is increased.

Description

technical field [0001] The invention relates to a mine construction method, in particular to a construction method for hoisting a large box-type derrick by a side-by-side double-mast semi-turning method. Background technique [0002] At present, the traditional "mast method" is generally used for hoisting large box-type derricks. This method has the disadvantages of large equipment usage, long-distance transportation of masts, sinking winches, wire ropes, tackles, shackles and other hoisting equipment costs, and long construction period. Long construction period, high construction cost and low efficiency. Therefore, it is a technical problem to be solved at present to study a construction method for hoisting a large box-type derrick by a side-by-side double-mast semi-turning method that uses less equipment and assembles the mast on the spot to reduce the long-distance transportation cost of the lifting equipment. Contents of the invention [0003] The technical problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/00
Inventor 王利廷魏慎玉孙春祥霍永金崔秀珍
Owner CHINA COAL FIRST CONSTR
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