Tower crane rotation limiter in tower crane operation

Abstract

The invention discloses a tower crane rotation limiter in tower crane operation. The tower crane rotation limiter comprises a rotating seat and a base which are distributed up and down, the top of the base is rotatably connected with the bottom of the rotating seat through an outer tooth rotation support, a driving gear is connected to the outer ring of the outer tooth rotation support in a meshing mode, and the driving gear is vertically and rotatably installed in a limiter installation frame through a driving shaft; two limiting devices are installed at the upper end and the lower end of the driving shaft, each limiting device comprises a bearing with an inner ring fixedly connected with the outer wall of the driving shaft, a gear ring is rotatably connected to the outer ring of each bearing, a plurality of clamping teeth consistent in direction are evenly distributed on the inner wall of each gear ring, a plurality of limiting ratchet structures are connected to the inner wall of the inner ring of each bearing, and the limiting ratchet structures extend towards the inner walls of the gear rings and are matched with the clamping teeth; and the clamping teeth on the upper limiting device and the lower limiting device are opposite in direction. The clamping teeth on the upper limiting device and the lower limiting device are opposite in direction, so that when the gear rings on the upper limiting device and the lower limiting device at different positions rotate, the driving shaft can be driven to rotate in different directions.

Description

technical field [0001] The invention relates to the technical field of tower crane equipment, in particular to a rotation limiter for tower cranes in tower crane operations. Background technique [0002] Tower crane is a kind of lifting equipment widely used in construction. It relies on the slewing mechanism to realize the rotation of the boom in the horizontal plane, so that the hook can cover the working surface. The jib of the tower crane is long. Since the wind resistance on the jib side of the tower crane is much greater than that on the balance arm side, the unpredictable wind can easily Blow tower crane to rotate. Under increasingly complex construction conditions, interference between the boom and surrounding obstacles often occurs, and even leads to major safety accidents. [0003] The slewing motion is generated by installing the upper and lower supports on the inner and outer sides of the slewing support respectively, and the small gear is driven by the slewing...

AI Technical Summary

Problems solved by technology

Under increasingly complex construction conditions, interference between the boom and surrounding obstacles often occurs, and even leads to major safety accidents

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