Novel buffer type tooth holder and bucket tooth combining device of excavator

Abstract

The invention discloses a novel buffer type tooth holder and bucket tooth combining device of an excavator. The novel buffer type tooth holder and bucket tooth combining device comprises a tooth holder, a bucket tooth, a bayonet lock and a shock pad, wherein the tooth holder comprises a tooth holder head and a tooth holder tail; the tooth holder head comprises a boss, a bayonet lock positioning seat and a transitional reinforcing rib; the boss, the bayonet lock positioning seat and the transitional reinforcing rib are integrally formed; the bayonet lock positioning seat is positioned at the end part, away from the tooth holder head, of the boss; the transitional reinforcing rib is connected with the boss and the tail; the transitional reinforcing rib and a lower connecting plate are positioned at the same side; the bayonet lock is of a hollow steel tube structure; the inner wall of a mounting cavity of the bucket tooth sheathes and adheres to the boss of the tooth holder head; a gap is formed between the inner wall of the mounting cavity of the bucket tooth and the bayonet lock positioning seat of the tooth holder head; the shock pad is directly poured on the inner cavity wall of one circumference where the bucket tooth is attached to the boss of the tooth holder head. The novel buffer type tooth holder and bucket tooth combined device disclosed by the invention has the advantages that various acting forces generated among the tooth holder, the bucket tooth, the bayonet lock, external materials, an edge plate and the like are improved by improvement measures, the service life of the tooth holder is prolonged, the cost of materials is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of excavator auto parts, in particular to a combination device of a novel buffer excavator tooth seat and bucket teeth. Background technique [0002] An excavator is an earth-moving machine that uses a bucket to excavate materials above or below the bearing surface, and loads them into transport vehicles or unloads them to the stockyard. The materials excavated by the excavator are mainly soil, coal, sediment, and pre-loose soil and rock. Judging from the development of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering construction. The traditional excavator gear seat is connected to the bucket tooth through bayonet pins. The bayonet hole will reduce the strength of the tooth seat. The assembly gap between the bucket tooth and the tooth seat will cause a rigid collision between ...

AI Technical Summary

Problems solved by technology

The traditional excavator gear seat is connected to the bucket tooth through bayonet pins. The bayonet hole will reduce the strength of the tooth seat. The assembly gap between the bucket tooth and the tooth seat will cause a rigid collision between the bucket tooth and the tooth seat when the excavator is working. , this position is the location with high incidence of tooth seat fracture failure; secondly, there is no transition part between the tooth seat convex part and the base, which is the second stress concentration part; at present, all the connecting welds between the tooth seat and the bucket blade are located in the tooth seat At the same time, due to the right-angle structure of the opening position of the tooth seat, the joint surface of the tooth seat and the blade plate cannot be completely fitted. When the bucket is excavated, the weld is not only impacted, but also subject to material friction. Extends to the entire blade, causing damage to the entire bucket; not only wastes material, but also affects the construction period

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