Tower crane boom tool

Abstract

A tower crane boom tool comprises a framework platform (1), wall plate components (2), a plurality of upper chord tube positioning supports (3), and a plurality of lower chord square tube positioning supports (4), wherein the wall plates components are detachably fixed on the left side and the right side of the framework platform (1). The tower crane boom tool is characterized in that upper joint positioning supports (5) and lower joint positioning supports (6) which are structured in left and right double side plates are arranged on the wall plate components, pin shaft holes are correspondingly arranged on the double side plates of the upper joint positioning supports, and square holes (7) are correspondingly arranged on the double side plates of the lower joint positioning supports and used for fixedly holding standardized modules (8) in different specifications. On one hand, precise positioning and butt jointing of variable cross sections of lower joints can be realized, on the other hand, deformation of the outer side surface and the upper surface of lower chord square tubes during splicing process of a tower crane boom is well controlled, good running conditions for amplitude-variable cars are provided, straightness of integral butt joint of the crane boom is effectively guaranteed, correcting workload is greatly reduced, and producing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of tower cranes, in particular to a device used in the welding process of the jib of the tower crane to ensure the forming accuracy. Background technique [0002] The jib tooling of existing tower cranes mostly adopts one-sided positioning of the lower joint, the lower joint and the upper joint are respectively in two planes, and the upper surface of the lower chord square tube is tailor-welded without control measures. Due to the unilateral positioning of the lower joint, it can move freely and finely in all directions in the gap between the lower chord and the lower chord, resulting in side bending when the boom is assembled as a whole; When the heavy arm is assembled as a whole, the straightness is reduced, which will bring a huge correction workload if it is light, and cause the running quality of the luffing trolley to be low and wear seriously. Contents of the invention [0003] In order to overcome...

AI Technical Summary

Problems solved by technology

Due to the unilateral positioning of the lower joint, it can move freely and finely in all directions in the gap between the lower chord and the lower chord, resulting in side bending when the boom is assembled as a whole; When the heavy arm is assembled as a whole, the straightness is reduced, which will bring a huge correction workload if it is light, and cause the running quality of the luffing trolley to be low and wear seriously.

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