Jaw crushers are mainly used for medium-sized crushing of various ores and bulk materials, and are widely used in mining, smelting, building materials, roads, railways, water conservancy and chemical industries. The working environment of the jaw crusher is harsh, and some problems or failures are prone to occur during use. The following editor summarizes the most likely problems that occur during the use of the jaw crusher.
1. There are beating or knocking sounds when the movable and fixed jaws are working
Solution: stop the machine for inspection, tap the fixed wedge iron on the side wall with a hammer, tighten or align the bolts; adjust the discharge opening to ensure the correct gap between the two jaw plates.
2. The head of the connecting rod produces impact sound
Solution: Re-scratch or replace the bushing.
3. The particle size of crushed products increases
Solution: The lower part of the tooth plate is obviously worn, adjust the ore discharge port, reduce the size of the ore discharge port, or replace the crushing tooth plate by 180 degrees.
4. After passing the iron, the supporting jaw stops swinging, the connecting rod swings back and forth, and the spring of the tie rod relaxes
Solution: replace the Xinli board. Strengthen the iron removal work, and strictly prohibit non-broken objects from falling into the crushing chamber.
5. The thrust plate falls off from the support pad
Solution: Replace the damaged parts and reinstall the thrust plate.
6. The axis of the flywheel swings left and right
Solution: Replace the eccentric shaft and flywheel; add a protective cover for the flywheel, and replace the eccentric shaft or flywheel; replace the flywheel; re-tighten the expansion sleeve.
7. The bearing temperature exceeds the allowable value, and the return oil temperature exceeds 60°C
Solution: Use gaskets to adjust the compression degree of the bearing bush; increase the amount of lubricating oil, clean the oil groove and lubricating oil circuit, and replace the lubricating oil; re-scrape the bearing; check the cooling system.
8. The groove wheel and movable jaw of the main engine are operating normally, but the crushing work stops
Solution: replace the tension spring, replace the pull rod; reinstall or replace the toggle plate.
Jaw crushers, as rough crushing equipment for sand and gravel raw materials, have a large workload and high frequency of use, which naturally leads to high wear and failure rates. Only by fully understanding the causes of equipment failures and solutions can they be put into production faster. Reduce the loss caused by maintenance shutdown.
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