Base structure crawler belt assembly and crawler crane

Abstract

The embodiment of the invention provides a base structure crawler belt assembly and a crawler crane, and relates to the field of crawler cranes. The base structure crawler belt assembly comprises a base, a first crawler belt frame, a second crawler belt frame and telescopic pieces, wherein the telescopic pieces are arranged at intervals along the front and back of the base, both ends of the telescopic pieces can be unlocked or locked on the base, and the crawler belt frames are detachably connected with the base. When the first ends of the telescopic pieces are unlocked and the second ends ofthe telescopic pieces are locked, the first ends are flexible and are detachably connected with the first crawler belt frame so as to drive the first crawler belt frame to be switched between a firstposition and a second position, and when the first ends of the telescopic pieces are locked and the second ends of the telescopic pieces are unlocked, the second ends are flexible and are detachably connected with the second crawler belt frame so as to drive the second crawler belt frame to be switched between a third position and a fourth position. The base structure crawler belt assembly is beneficial to smooth contraction of the first crawler belt frame and the second crawler belt frame, so that the phenomenon that the crawler belt frames are in a Chinese-character-eight-shaped contractionstate is avoided, and the crawler belt frames are not prone to contraction clamping is avoided.

Description

technical field [0001] The invention relates to the field of crawler cranes, in particular to an unloading crawler assembly and a crawler crane. Background technique [0002] Generally, the crawler cranes with small and medium tonnages have two forms of getting off: 1. When the crawler crane is working, the crawler frame is extended to improve the stability of the crawler crane when it is working; 2. When the crawler crane is being constructed or transported on a narrow road section, the crawler frame shrinks and the crawler is expanded. Suitability of the crane. [0003] At present, single or multiple hydraulic cylinders are generally arranged in the center for the expansion and contraction of crawler tracks when getting off the car. When the existing crawler cranes are stretching, they usually make the crawler frame shrink inward in an "eight" shape, which is prone to expansion and contraction. The sticking problem requires telescopic movement while walking back and forth...

AI Technical Summary

Problems solved by technology

[0003] At present, single or multiple hydraulic cylinders are generally arranged in the center for the expansion and contraction of crawler tracks when getting off the car. When the existing crawler cranes are in telescopic movement, the crawler frame usually shrinks inward in an "eight" shape, which is prone to expansion and contraction. Stuck problem, need to do telescopic movement while walking back and forth, reducing operating efficiency

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