Locking device for hammer head of crusher

Abstract

The invention relates to a locking device for the hammer head of a crusher. The inventin aims to provide the locking device for the hammer head of the crusher to solve the problems of looseness and dropping off of the hammer head of the crusher, so that the requirements of continuously crushing to to-be-crushed objects with diffrent crushing grain grades are met. The locking device for the hammer head of the crusher comprises a fixing seat and a big bolt, after passing through the through hole on the fixing seat, the big bolt is used for fixing a cutter tooth on a cutter tooth base through threaded connection, the device further comprises a spring, a safe bearing plate and at least two small bolts, the through hole on the fixing seat is a stepped hole, the spring is sleeved on the big bolt, one end of the spring is in contact with the stepped surface of the stepped hole, the other end of the spring is in contact with the bolt head of the big bolt, a big bolt fastener hole is formed on the safe padding plate, the big bolt fastener hole is hexagonal, the safe bearing plate is fixedly mounted on the fixing seat through small bolts, and the bolt head of the big bolt is positioned inside the big bolt fastener hole.

Description

technical field [0001] The invention relates to a device with a rotating hammer element, in particular to an anti-loosening device for a hammer head of a crusher. Background technique [0002] At present, wheel crushers use the high-speed rotation of the crusher hammer to break the coal. The existing crusher includes a crushing shaft, a knife tooth seat and a hammer head (knife tooth), and the knife tooth seat is fixedly installed on the crushing shaft. A plurality of hammer heads are connected to the knife tooth seat, and bolts are used between each hammer head and the knife tooth seat. When the crusher crushes the crushed objects with large particles, such as coal gangue or hard coal, It produces a large rotational impact on the hammer head of the crusher, so that the bolts connecting the hammer head are easy to loosen after the crusher has been working for a period of time, so many hammer heads of the crusher frequently loosen and fall off before their service life is rea...

AI Technical Summary

Problems solved by technology

[0002] At present, wheel crushers use the high-speed rotation of the crusher hammer to break the coal. The existing crusher includes a crushing shaft, a knife tooth seat and a hammer head (knife tooth), and the knife tooth seat is fixedly installed on the crushing shaft. A plurality of hammer heads are connected to the knife tooth seat, and bolts are used between each hammer head and the knife tooth seat. When the crusher crushes the crushed objects with large particles, such as coal gangue or hard coal, It produces a large rotational impact on the hammer head of the crusher, so that the bolts connecting the hammer head are easy to loosen after the crusher has been working for a period of time, so many hammer heads of the crusher frequently loosen and fall off before their service life is reached. posed a great safety hazard

As a result, the crusher lost its crushing function, which made the joint mining and transportation have to be interrupted, reducing the coal mining efficiency

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