Excavator and bucket bottom buffer device thereof

Abstract

The invention provides an excavator and a bucket bottom buffer device thereof, which are used for solving the problem of bucket damage caused by impact shock of a bucket during bucket bottom closing. The bucket bottom buffer device comprises a buffer seat body and an elastic buffer block, wherein the buffer seat body is provided with a first steel plate, a second steel plate and a third steel plate; the first steel plate, the second steel plate and the third steel plate form a cavity with an open bottom; the elastic buffer block is arranged in the cavity and is fixedly connected with the third steel plate; the bottom end of the elastic buffer block extends out of the cavity in a natural state. According to the bucket bottom buffer device, the impact vibration on the bucket during bucket bottom closing is reduced, the bucket bottom is prevented from being damaged, a bucket protection effect is achieved, and the service life of the bucket is prolonged; besides the buffer support body is integrally welded, so that the structure is simple; the elastic buffer block is fixedly connected with the buffer support body, so that the bucket bottom buffer device is convenient to assemble and disassemble, low in manufacturing cost, and economical and safe.

Description

technical field [0001] The invention relates to an excavator, in particular to a bucket bottom buffer device of the excavator. Background technique [0002] The working mechanism of the excavator mainly includes a bucket, a stick, a lifting arm, a pushing mechanism and a bucket opening mechanism, etc., and the bucket includes bucket teeth, bucket body, bucket lifting beam, balance pulley, bucket bottom and various connecting pins, etc. . [0003] On a large mining shovel excavator, the bottom of the bucket frequently opens and closes during the process of loading and unloading materials. Although there is a certain assembly gap between the bottom of the bucket and the bucket body, the bottom of the bucket may still collide with the bucket body when it is closed. , The impact vibration caused will cause damage to the bucket. [0004] The existing technology uses a set of bucket bottom damping device installed on the back side of the bucket to connect the bottom of the bucke...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a bucket bottom buffer device different from the existing excavator bucket bottom damping device and an excavator with the bucket bottom buffer device to solve the problem of bucket damage caused by impacting and vibrating the bucket body when the bucket bottom is closed

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