Crane boom structure

Abstract

The invention discloses a crane boom structure, and belongs to the technical field of cranes. The crane boom structure comprises a crane body and a telescopic main arm hinged to the rear side of the crane body. A derricking cylinder I is hinged between the front side surface of the first section of the lower portion of the telescopic main arm and the crane body. A superlift is further hinged to the front side surface of the first section of the lower portion of the telescopic main arm. A superlift derricking cylinder II is hinged between the superlift and the first section of the lower portionof the telescopic main arm. The upper end of the telescopic main arm is hinged to a tower arm. The front side of the tower arm is hinged to a tower arm supporting frame. A sway bar is connected between the tower arm supporting frame and the tower arm. A winch is installed on the superlift. The crane body is connected with a derricking steel wire rope. The other end of the derricking steel wire rope sequentially winds around the outer end of the superlift and the outer end of the tower arm supporting frame and then is connected to the winch. Through the foldable crane boom structure, the procedures of detaching and installing a derricking jig, lifting and lowering the derricking jig, detaching and installing a hook and penetrating the steel wire rope and using an auxiliary conveying vehicle are omitted in the transferring process, the transferring cost is greatly lowered, and the transferring efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a crane jib structure. Background technique [0002] With the intensified competition in the crane hoisting market, the profits of super-large-tonnage cranes in the general hoisting market have plummeted. At present, the main profit-making areas of domestic super-large-tonnage crane hoisting work are concentrated in the wind power installation and maintenance market. The demand for cranes in the wind power installation and maintenance market is no longer the overall performance advantages in large-scale and large-scale areas, but the requirements for hoisting weight when the lifting height is large, and more attention is paid to the convenience of transition and disassembly , Economy. [0003] At present, after the installation of a wind turbine is completed, when the crane is transferred, because the crane is heavy, the arm is long, and the center of gravity of the whole vehicle...

AI Technical Summary

Problems solved by technology

[0003] At present, after the installation of a wind turbine is completed, when the crane is transferred, because the crane is heavy, the arm is long, and the center of gravity of the whole vehicle is unbalanced, it is necessary to remove the front luffing jib assembly, and then go to the next wind turbine hoisting site. During the reassembly process, the hook, wire rope, and lifting arm also need to be disassembled. The entire disassembly process takes 4 to 5 hours, which undoubtedly consumes time and manpower. At the same time, the disassembly structure requires auxiliary vehicles for transportation, which increases the transition cost.

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