Device and method for mounting and dismounting crane boom

Abstract

The invention discloses a device and method for mounting and dismounting a crane boom. The device comprises a main chord member, a transverse steel girder, a longitudinal steel girder, an amplitude-variable cart, a derrick crane, a movable pulley set, an amplitude-variable steel wire rope and a lifting steel wire rope, wherein the derrick crane is fixed to a derrick crane base; the lower ends of the transverse steel girder, the longitudinal steel girder and the main chord member jointly define a semi-closed rectangular area; the amplitude-variable cart is clamped in the semi-closed rectangular area; the amplitude-variable steel wire rope is connected with a chain block, one end of the amplitude-variable steel wire rope is fixed to the derrick crane, and the other end of the amplitude-variable steel wire rope is fixed to the main chord member; one end of the lifting steel wire rope is fixed to the main chord member, and the other end of the lifting steel wire rope is wound around the movable pulley set and then is fixed to the derrick crane. According to the device and method for mounting and dismounting the crane boom, the amplitude-variable cart is matched with the derrick crane and the movable pulley set, the crane boom is mounted and dismounted, the space and advantages of the amplitude-variable cart are fully used, the crane boom can be hoisted to be disconnected from a tower crane at a time, the mounting and dismounting structure is simple, operation is simple, and feasibility is high.

Description

Technical field [0001] The invention relates to the technical field of hoisting machinery construction, in particular to a device and method for installing and disassembling a boom by using a luffing trolley. Background technique [0002] As the pace of socialist construction accelerates, high-rise and super-high-rise buildings use tower cranes and make mistakes in the positioning of the tower crane foundations, and there are more and more reasons for the overhangs of the tower cranes. The boom protrudes several tens of meters from the edge of the building. Generally, auxiliary disassembly equipment cannot lift the boom from the tower crane at one time to successfully place the roof layer, which is inefficient in operation and high in labor costs. Summary of the invention [0003] In view of the shortcomings in the above-mentioned technology, the present invention provides a device and method for installing and disassembling a boom using a luffing trolley. [0004] In order to achi...

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Problems solved by technology

[0002] With the acceleration of socialist construction, more and more tower cranes cannot be disassembled normally due to the use of tower cranes in high-rise and super high-rise buildings, errors in the positioning of tower crane foundations, and building overhangs, and the vast majority of tower cranes that need to be dismantled in the air The jib extends tens of meters from the edge of the building, and general auxiliary dismantling equipment cannot hoist the jib away from the tower crane at one time and connect it to the roof layer successfully, so the operation efficiency is low and the labor cost is high

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