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How to extend the use life of the jaw crusher

2018-10-27 16:27:56


In the daily use of the jaw crusher, wear is inevitable. How to reduce the wear, we need to do is not only improve production efficiency, but also improve economic efficiency, so we have long-term in the jaw crusher, eccentric shaft and bearing bush of the jaw crusher maintenance!

The jaw crusher works in the form of a curved extrusion. The working principle is: the motor drives the belt and the pulley. The eccentric shaft moves the movement up and down. When the moving jaw plate rises, the angle between the bracket and the moving jaw plate have changed. Large, thereby pushing the moving jaw to approach the fixed jaw, at the same time the material is crushed or crushed to achieve the purpose of crushing; when the moving down, the angle between the bracket and the moving jaw becomes smaller, and the moving jaw is in the pulling rod. Under the action of the spring, the fixed raft is left, and the broken material is discharged from the lower opening of the crushing chamber. As the motor rotates continuously, the crushing maneuvering cycle motion crushes and excretes the material to achieve mass production.

First, if the shaft wears little, just to repair its geometry, it can be turned on a lathe to bring the journal to the correct geometry and then reduce the bearing inner diameter accordingly. However, after several such treatments, if the journal size is reduced by 5% compared to the original, no turning is allowed, and the new shaft should be replaced.

Then, jaw crusher is working under the impact load, Pap close the bush gold lining, duration of work about two years or so, the deadline, you will need to re-cast. If the eccentric shaft and the bearing bush, the mandrel and the bearing bush are worn, and the top clearance is greater than 1.5 times of the original assembly clearance, it needs to be adjusted or replaced; if the oil groove wears 1.5 mm, the oil groove should be re-opened and adjusted. The gap between the upper cover of the connecting rod head and the eccentric shaft, when worn to more than 1.5 times the assembly clearance, also needs to be adjusted or replaced with a new one. When the Babbitt alloy on the bearing shell has a deep peeling or a large abrasion, it should be recast. For the quality of the bearing bush, the following requirements are required: the surface of the babbitt alloy should be uniform, dull, silvery white; the surface layer of the babbitt should not have ash, cracks, blisters, shrinkage holes, etc.

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