Tower crane

Abstract

The invention relates to a tower crane, comprising a tower pedestal, a tower body, pull rods and a control unit. The tower body is fixed on the tower pedestal; a swing mechanism is arranged at the upper part of the tower body; a tower cover is arranged above the swing mechanism; a balance arm and an erector arm are arranged at two sides of the bottom of the tower cover; protruding ends of the balance arm and the erector arm are connected to the top of the tower cover through the pull rods respectively; the erector arm is provided with a crane luffing trolley and a crane luffing drawing mechanism; an anti-rollover displacement measurement and control system is fixed on the upper part of the swing mechanism; the balance arm is fixedly provided with a balance-weight variable mechanism assembly; and the control unit is connected to the anti-rollover displacement measurement and control system and the balance-weight variable mechanism assembly through control lines. The tower crane can detect and correct an unbalanced and inclined state of the whole machine of the tower crane automatically, thereby increasing safe running efficiency significantly.

Description

technical field [0001] The invention relates to a crane, in particular to a tower crane. Background technique [0002] With the rapid development of my country's economy and engineering construction, tower cranes have been widely used in various engineering constructions. Because the existing tower cranes still use the inherent mechanical structure, the boom often operates under the dynamic and changeable abnormal working conditions of lifting heavy objects, while the balance arm does always maintain the only static moment, which often cannot be balanced and offset The unbalanced state of the whole machine brought about by the variable lifting moment, combined with the illegal operation of the operators and the external influence of the wind, resulted in frequent major accidents of the tower crane tipping and collapsing, posing safety threats and even causing on-site personnel to Casualties have brought major safety hazards to people's lives and property and caused adverse...

AI Technical Summary

Problems solved by technology

Because the existing tower cranes still use the inherent mechanical structure, the boom often operates under the dynamic and changeable abnormal working conditions of lifting heavy objects, while the balance arm does always maintain the only static moment, which often cannot be balanced and offset The unbalanced state of the whole machine brought about by the variable lifting moment, combined with the illegal operation of the operators and the external influence of the wind, resulted in frequent major accidents of the tower crane tipping and collapsing, posing safety threats and even causing on-site personnel to Casualties have brought major safety hazards to people's lives and property, causing adverse social impacts

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