There are roughly three types of planned overhauls for jaw crushers: minor, intermediate and overhaul.
Minor and intermediate repairs are the main repair methods. Through minor and intermediate repairs, maintain the equipment to make it work well during the two overhauls, and determine the work content of the overhaul. The two repair intervals proposed below are calculated on a three-shift daily basis.
1.The main contents of minor repairs: check and repair the adjustment device, adjust the clearance of the ore discharge; replace the worn liners and thrust plates; repair and replace the transmission parts; clean inpidual parts of the crusher; Adjust the lubrication system, etc. The interval between minor repairs depends on the operation of the equipment, and it is generally from half a month to once a month.
2.The main content of the intermediate repair: including the entire work content of the minor repair. In addition, replace worn thrust plates, bushings, tie rods, liners; check, turn, grind and cast eccentric shaft bushings, connecting rod head bushings, and movable jaw bushings. The interval between two intermediate repairs depends on the wear of the spindle bush, the connecting rod head bush and the movable jaw bush, and it is generally once a year.
3.The main content of the overhaul: including the entire work of the intermediate repair. In addition, the eccentric shaft and movable jaw mandrel of the crusher are replaced or turned; the Babbitt alloy is cast on the upper part of the connecting rod head; all worn parts and components are replaced and restored; the entire crusher is corrected and the equipment is technologically innovative.
At present, most of the repair of the crusher is to replace the entire component, that is, the component pre-repair method. This method requires that all parts of the crusher be provided in the beneficiation plant. When repairing, just remove the worn parts and replace them with new ones. Compared with the method of replacing parts, this greatly shortens the shutdown time of the machine, thereby improving the operating rate of the crusher.
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