Crawler crane anti-tipping device

Abstract

The invention relates to a crawler crane anti-tipping device and belongs to the technical field of crane safety. The anti-tipping device manly comprises a front-mounted telescopic arm, a limiting supporting rod, an anti-tipping steel wire rope with calculated length and strength, a pulley, a steel wire rope winch and the like. When a crawler crane works by small amount, one end of the steel wire rope is fixed at the head of an auxiliary arm, and the other end of the steel wire rope is fixed at the head of the front-mounted telescopic arm on a slewing platform and is pretightened with the steelwire rope winch after penetrating through the pulley on a limiting supporting rod at the head of a main arm. When the crawler crane performs hoisting operation by small amount and encounters backwardwind or suddenly performs unloading to cause backward bouncing of an arm frame, the device performs forward traction on the head of the arm frame to counteract the backward bouncing load of the head,and the effect of stress protection to the arm frame and avoidance of whole machine tipping are exerted. When the crawler crane performs dramatic operation or in a non working state, the steel wire rope winch releases the steel wire rope, the supporting rod and the front-mounted telescopic arm are retracted to the position close to the arm frame, and the device does not work and does not influence operation of the crane.

Description

technical field [0001] The invention relates to a crawler crane anti-dipping device, which belongs to the technical field of crane safety. Background technique [0002] The crawler crane is a mobile crane that installs the lifting operation part on the crawler chassis and relies on the crawler device for walking. Crawler cranes are widely used: crawler cranes can carry out operations such as material lifting, transportation, loading and unloading, and installation. Crawler cranes have the advantages of strong lifting capacity, small grounding specific pressure, small turning radius, large climbing ability, no need for outriggers, driving with load, good operational stability, and the height of the truss combination can be freely replaced. Bridge, petrochemical, water conservancy and hydropower and other construction industries are widely used. [0003] Safety is very important during the operation of crawler cranes, which involves not only the safety of hoisting equipment,...

AI Technical Summary

Problems solved by technology

For example, an example of an engineering accident: During the hoisting of wind power blades, a sudden strong wind or hoisting coordination error will cause the blades to hit the tower or the crane arm, break the blades, and cause sudden unloading

If a group of blades are hoisted at the same time, if one blade is broken, it will cause other blades to swing, and then other blades will be broken, resulting in two or more sudden unloading

Sudden unloading will cause the boom to spring back, the consequences are disastrous and extremely dangerous

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