Full-automatic quick replacement device of hydraulic excavator

Abstract

The invention discloses a full-automatic quick replacement device of a hydraulic excavator. The full-automatic quick replacement device comprises an upper coupling part and a lower coupling part. Theupper coupling part comprises a quick female joint assembly and pin rods capable of being driven by a telescopic oil cylinder to move. The lower coupling part comprises a quick male joint assembly, apin shaft assembly, conic pin cooperation sleeves cooperating with the pin rods and spring lower guide columns. The upper coupling part can be hooked to the pin shaft assembly at one end of the lowercoupling part through a hook-shaped portion at one end of the upper coupling part and rotates around the center axis of the pin shaft assembly, so that quick female joints at the other end of the upper coupling part correspondingly communicate with quick male joints at the other end of the lower coupling part. The pin rods are driven by the telescopic oil cylinder to stretch into the conic pin cooperation sleeves to mechanically lock the upper coupling part and the lower coupling part. Hydraulic connection is achieved through coupling of the quick male joint assembly and the quick female jointassembly, the posture is adjusted through guide of guide columns and adjusting springs, it is ensured that connection is accurate and reliable, and operation is safe.

Description

technical field [0001] The invention relates to a fully automatic quick change device for a hydraulic excavator, which belongs to the technical field of engineering machinery. Background technique [0002] With the continuous development of the construction machinery industry, construction machinery work tools are increasingly being highly valued, and have gradually become an emerging development field in the industry. As one of the most widely used construction machinery, hydraulic excavators have the fastest development of operating tools, the most functional tools, and relatively high technical content. Hydraulic excavators have developed from "shovels" equipped with a single bucket. Become a multifunctional engineering construction machine with the role of a manipulator. In order to efficiently, simply, safely and reliably realize the rapid replacement of excavator work tools, various countries in the world have successively researched and developed various work tool qu...

AI Technical Summary

Problems solved by technology

[0016] Aiming at the shortcomings of the prior art, the present invention mainly solves the problems of complex mechanical connection and low reliability of the current quick-change device

It can further solve the problem of low efficiency of the current quick change device to connect the work tool

Further, the problem of low versatility of the current quick-change device can be solved

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