Excavator and bucket tooth connection assembly thereof

Abstract

The invention provides an excavator and a bucket tooth connection assembly thereof. The bucket tooth connection assembly comprises a tooth top, a tooth holder, a pin bush and a tooth pin, wherein the tooth top is provided with an inner cavity and a first mounting hole; the first mounting hole is formed on the wall of the inner cavity; the tooth holder is provided with a head part and a second mounting hole; the second mounting hole is formed in the head part; the head part is matched with the inner cavity; the pin bush is provided with a pin bush body, a reinforcing part, a hinge pin hole, a placement groove, a positioning groove and a guide part and is arranged in the second mounting hole; the tooth pin is provided with a pin body and a hinge pin; the hinge pin is provided with a convex tongue part; the tooth pin is inserted into the first mounting hole; the hinge pin is inserted into the hinge pin hole; the tongue part rotates the tooth pin after passing through the placement groove; the tongue part passes through the guide part to be clamped in the positioning groove so as to fixedly connect the tooth top and the tooth holder. The bucket tooth connection assembly provided by the invention can provide excellent support in the case of impact and vibration; technical difficulty is reduced when the tooth top and the tooth holder are made; matching accuracy is improved; the bucket tooth connection assembly is convenient to manufacture and is convenient to install and disassemble; meanwhile, the phenomenon that the tooth top is lost in the use process is avoided.

Description

technical field [0001] The invention relates to an excavator, in particular to a bucket tooth connection assembly of the excavator. Background technique [0002] Excavator is a kind of construction machinery, which is widely used in construction, road, mine and other engineering fields, and its main function is to carry out excavation operations. [0003] The working part of the excavator mainly includes the bucket, arm and boom. Under the action of the hydraulic cylinder, each part swings around the hinge point to complete excavation, lifting and unloading. [0004] As the main wear parts of the excavator, after being installed on the bucket, the bucket teeth are usually subjected to harsh working conditions and rapid wear during use, and the parts are replaced frequently. In order to reduce the cost of the bucket teeth and reduce the amount of material of the wear-resistant parts that need to be replaced, the bucket teeth are usually designed as a combined structure. Com...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a connection assembly for combining bucket teeth of an excavator, which is different from the structure of the bucket tooth connection assembly in the existing excavator, and solves the problem that the connection structure of the existing tooth tip and the tooth seat is unreasonable, and the tooth tip is lost due to long-term use. and problems with more stringent manufacturing conditions

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