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How can the service life of jaw crusher be prolonged

Date:2019-10-12 13:32     writer:cement editor     Views:

In the daily use of jaw crusher, wear and tear is inevitable, reduce the wear and tear, not only can improve production efficiency, but also improve economic benefits, how to prolong the service life of jaw crusher?


jaw crusher
 

1. Working principle of jaw crusher


Jaw crusher works for dynamic JiYaXing, its working principle is: motor drive belt and pulley, make through eccentric shaft dynamic jaw movement up and down, when moving jaw rises between the bracket and fixed jaw Angle, so as to promote dynamic jaw plate to the fixed jaw close, rather than the material being crushed or broken at the same time, achieve the purpose of broken;When the moving jaw goes down, the Angle between the bracket plate and the moving jaw becomes smaller. Under the action of the pull rod and spring, the moving jaw plate leaves the fixed jaw plate, and at this time, the broken materials are discharged from the lower mouth of the crushing cavity.With the continuous rotation of the motor, the crushing motor jaw is used for periodic movement to crush and discharge materials, so as to realize mass production.


Jaw crusher shaft
 

2. The shaft of jaw crusher is worn


If there is little wear on the shaft, simply to repair its geometry, the shaft neck can be turned on the lathe to achieve the correct geometry, and then the bearing bore diameter can be reduced accordingly.However, after several times of such treatment, if the size of the shaft neck is 5% smaller than the original, it is no longer allowed to turn, and should be replaced with a new shaft.If there is little wear on the shaft, simply to repair its geometry, the shaft neck can be turned on the lathe to achieve the correct geometry, and then the bearing bore diameter can be reduced accordingly.However, after several times of such treatment, if the size of the shaft neck is 5% smaller than the original, it is no longer allowed to turn, and should be replaced with a new shaft.


Jaw crusher bearing shell
 

3. Eccentric shaft and bearing bush


Jaw crusher is working under the impact load, the bushing on the babbitt alloy lining, working period of about two years or so, beyond the time limit, then need to recast.If the eccentric shaft and the bearing bush, the spindle and the bearing bush are worn, and the top clearance is 1.5 times larger than the original assembly clearance, the pad should be added to adjust or replace;The trench should be reopened and adjusted if 1.5mm is worn.When the gap between the cover of connecting rod head and eccentric shaft is worn to more than 1.5 times of the assembly gap, it also needs to be adjusted with padding or replaced with a new one.When the babbitt alloy on the bearing shell has a deep peeling or a large scratch, should be recast.For the quality of the processed bearing bush has the following requirements: the color of the surface of babbitt alloy should be uniform, matt, silver white;There should be no slag, crack, sand hole, shrinkage hole and peeling phenomenon in the surface layer of babbitt alloy.

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