Variable amplitude trolley with detachable landing legs

Abstract

The invention discloses a variable amplitude trolley with detachable landing legs, and belongs to the field of variable amplitude trolley equipment of tower cranes. The variable amplitude trolley comprises a variable amplitude trolley body and main chord members arranged on the variable amplitude trolley body and further comprises the detachable landing legs arranged on the variable amplitude trolley body. Landing leg sleeves are arranged at the lower ends of the main chord members and provided with through holes. The detachable landing legs comprise landing leg bodies and supporting plates arranged at the lower ends of the landing leg bodies. The landing leg bodies are provided with installing holes corresponding to the through holes in the landing leg sleeves. The installing holes and the through holes are internally provided with connecting pieces used for fixing the landing leg bodies into the landing leg sleeves, and the detachable landing legs can be installed on the main chord members through the connecting pieces. Fixing pieces used for preventing the connecting pieces from disengaging from the installing holes and the through holes are arranged at the tail ends of the connecting pieces. The landing leg bodies are fixed to the supporting plates. The detachable landing legs are arranged in the main chord members, trolley sliding wheels are protected through the landing legs, and the sliding wheels are prevented from being damaged. When a cargo boom is assembled, the landing legs can be dismounted, and therefore the elevating capacity of a tower crane can be increased.

Description

technical field [0001] The invention relates to a luffing trolley, in particular to a luffing trolley with detachable outriggers, and belongs to the field of luffing trolley equipment for tower cranes. Background technique [0002] When the tower crane luffing trolley is installed, in order to prevent the pulley from contacting the ground and causing wear, outriggers are generally designed; but if the outriggers are too long, the weight of the luffing trolley will increase, and the weight of the luffing trolley will increase when the steel structure of the tower crane remains unchanged. Down means that the lifting capacity of the tower crane is reduced. [0003] The outrigger structure of the current trolley design is as follows: figure 1 As shown, this kind of outriggers are mostly fixed outriggers 1 made of welded angle steel. The outriggers are not detachable. Although they can meet the requirements of installation, since the outriggers are installed on the boom together...

AI Technical Summary

Problems solved by technology

[0004] 1) When the pulley and the trolley on the bottom chord have a large structure and a high height, the angle steel will be too long, the force will become larger, the structural instability will increase, and there will be safety hazards

[0005] 2) The angle steel on both sides of the bottom chord protrudes too long, and one end of the boom is tilted when it is loaded, and it is very easy to slip off the vehicle. There is a great potential safety hazard during transportation, which is very dangerous

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