The jaw crusher liner usually makes it into a tooth shape, which can split and crush the mine very well, and has a great effect on crushing the mine, but the wear is relatively large. When the wear is serious or the force is applied When it is larger, it will cause the fracture of the liner, which will have a great impact on the production of the equipment. In view of this situation, Xiaobian briefly summarizes the five major reasons for the fracture of the jaw crusher liner and how to Measures to reduce its breakage.
1. The unqualified forging process of the movable jaw in the casting process has resulted in a lot of defects such as pores on the movable jaw. In this case, defects such as fracture and breakage will occur after a certain period of operation.
Measures: In production, it needs to be replaced regularly according to the degree of wear and tear. The lining plate made of wear-resistant material can reduce the phenomenon of wear; it is necessary to choose a professional and experienced mining machinery manufacturer. BTMA has more than 30 years of experience in mining machinery manufacturing .
2. There are unbreakable objects in the jaw crusher, which increases the impact pressure, and the toggle plate does not have a good function of self-breaking and maintenance. In this case, the impact force is transmitted to the movable jaw.
Measures: The selected materials need to meet the requirements of the corresponding type of jaw crusher, otherwise the machine will be in an overloaded production state, which will increase the breaking speed of the liner. In terms of feeding, it is necessary to The material is screened, which can prevent the phenomenon that the hardness is high or the non-broken material enters the crushing chamber and causes a large pressure on other parts, resulting in the breakage of the liner.
3. The displacement of the movable jaw changes during the operation process, which causes the bottom of the movable jaw to collide with the frame guard plate, and the movable jaw breaks; the pull rod spring fails, and the pressure of the movable jaw increases; the distance between the movable jaw and the fixed jaw determines the ore discharge The size of the mouth, when the size of the ore discharge mouth is unreasonable, it will also cause the fracture defect of the movable jaw.
Measures: The jaw crusher is composed of many parts. If the accessories around the lining plate fail, it will definitely affect the lining plate. Therefore, it is necessary to check correctly before operation. There are many inspection contents, mainly checking eccentricity Whether the position and connection of the shaft, bearing, adapter bushing and movable jaw are well adjusted; check whether the position of the movable jaw changes; check whether the size of the ore discharge port is reasonable; check whether the toggle plate and the toggle plate pad are parallel, etc. , the unreasonableness of these situations may cause the breakage of the liner, so the inspection work cannot be ignored.
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