The small and medium-sized jaw crusher can restore the original performance of the equipment through medium repair or minor repair. It does not need to be overhauled. The large jaw crusher can be overhauled when necessary to restore the performance of the equipment. 1. The contents and methods of the small repair of the jaw crusher: (1) check the wear of the jaws, the jaws are made of high manganese cast steel is made in order to increase the crushing capacity of the raw material, the working surface of the jaw cast tooth. When the jaw crusher is working, the lower part is the most easy to wear. When the lower part is worn, the jaws can be exchanged. If both ends of the jaw are worn, the new jaw should be replaced. The replaced the old jaw can master quality alloy welding repair. When the tooth profile wear of the raft is less than 5 mm, the master alloy layer can be directly welded. When the wear amount is more than 5 mm, the common electrode layer should be first welded, then the joint weld layer is surfacing, and finally the hard alloy is deposited. Layer, the thickness of the cemented carbide layer is generally 3-5 mm. (2) Check the wear of the bracket and bracket pad. The toggle plate is made of gray cast iron, mainly under pressure, so that wear is slow, when the toggle terminal portion badly worn, the size of the available iron electrode surfacing recovery. The brackets are stamped from steel plates, which are not easy to be sealed and are easy to manufacture. When the wear is serious, they can be replaced with new ones without repairing. (3) The rolling bearing (or bearing bush) of the eccentric shaft must be lubricated regularly. It should be refueled once every time, and the bearing wear should be checked and recorded. (4) The wedge iron fixing bolts of the sill plate are easy to loosen, and the fixing bolts must be tightened each time the small repairs are planned, except for the operator's daily inspection. The minor repair interval of the jaw crusher can generally be 30 to 40 days. 2. The contents of the repair of the jaw crusher plan are as follows: (1) Cleaning and checking the eccentric shaft and bearing. Generally, the eccentric shaft and bearing should be cleaned once every 6-8 months. When the clearance of the rolling bearing exceeds the limit value, it should be replaced. (2) Replace the jaws of the crusher, and the replaced old jaws can be repaired by minor repairs as spare parts for the next repair. Side linings have a small amount of wear and are not necessarily replaced every time they are repaired. (3) Check or replace the brackets, brackets and tension springs, etc. When the spring breaks, it must be replaced. Replace the adjusting bolt on the adjusting iron. Because the adjusting bolt is often adjusted, the threaded part wears faster and its life is shorter.
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Repair and troubleshooting of jaw crusher
Repair and troubleshooting of jaw crusher