Foldable arm of crawler crane

Abstract

The invention discloses a foldable arm of a crawler crane, which is mainly used for construction sites of wind power, nuclear power, petrochemical industry and the like, and has higher requirements on suspended load weight and height. The foldable arm of the crawler crane is formed by a foldable arm upper part, a foldable arm lower part, a foldable arm supporting frame, a foldable arm amplitude variation device and a backward leaning prevention device, wherein the foldable arm upper part is hinged with the foldable arm lower part; the root part of the foldable arm supporting frame is hinged with the bottom of the foldable arm upper part; the foldable arm upper part is connected with the upper part of the foldable arm supporting frame through a supporting frame pull plate; and the upper part of the foldable arm supporting frame is connected with the lower part of the foldable arm through an amplitude variation pull plate and the foldable arm amplitude variation device. According to the foldable arm of the crawler crane, the common effect of main amplitude variation and foldable arm amplitude variation can lift the whole foldable arm to leave the ground surface in an arm lifting process, so as to achieve the appointed working angle and radius. The foldable arm of the crawler crane solves the problems that when the height of the suspended load of the conventional crane is high and the weight is heavy, work equipment is heavy and the arm is difficult to automatically lift, and a super-long cantilever crane cannot walk when the weather condition is not good. The foldable arm of the crawler crane disclosed by the invention is a novel crane part which is efficient, is simple to operate and is easy to realize.

Description

1. Technical field [0001] The invention belongs to the technical field of crawler cranes, and in particular relates to a folding arm of a crawler crane used in construction sites such as wind power, nuclear power and petrochemical industries, where there are relatively large requirements for hoisting weight and height, and there is no auxiliary crane on site. 2. Background technology [0002] In building hoisting construction, it is particularly important to reduce construction costs and shorten construction time. But at present, when most lattice cranes need long boom operations, they are generally heavy main boom working conditions, tower working conditions and light boom working conditions, which cannot be lifted by themselves and need to use auxiliary cranes. The main crane and the auxiliary crane coordinate with each other during the jib lifting process, which takes a long time and increases the cost. And when changing the site to work, the boom is usually disassembled...

AI Technical Summary

Problems solved by technology

It can completely solve the time-consuming, labor-consuming and money-consuming problems of traditional working conditions, improve work efficiency and increase lifting performance

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