A kind of crawler assembly and crawler crane

Abstract

An embodiment of the present invention provides an unloading crawler assembly and a crawler crane, which relate to the field of crawler cranes. The off-car crawler assembly includes a base, a first crawler frame, a second crawler frame and a telescoping member. The telescopic parts are arranged at intervals along the front and back of the base, both ends of the telescopic parts can be unlocked or locked with the base, and the crawler frame is detachably connected to the base. When the first end of the telescopic member is unlocked and the second end is locked, the first end is telescopic and detachably connected with the first crawler frame to drive the first crawler frame to switch between the first position and the second position, when the telescopic member When the first end is locked and the second end is unlocked, the second end stretches and is detachably connected with the second crawler frame to drive the second crawler frame to switch between the third position and the fourth position. The crawler track assembly for getting off the vehicle is conducive to the smooth contraction of the first crawler frame and the second crawler frame, avoiding the contraction state of the crawler frame in a "eight" shape, and the phenomenon of stretching and stagnation is not easy to occur.

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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