• Reasons for the fracture of the main shaft of the jaw crusher
  • Reasons for the fracture of the main shaft of the jaw crusher
  • Reasons for the fracture of the main shaft of the jaw crusher

Reasons for the fracture of the main shaft of the jaw crusher

1. The performance of the equipment itself
When making the eccenthc shaft, if the heat treatment is not done well, the fatigue resistance of the eccenthc shaft is reduced. Once it encounters relatively hard or unbreakable materials, resistance will be generated, which will increase the burden on the eccenthc shaft and make the eccenthc shaft prone to cracks. The eccenthc shaft will break.

2. Improper speed control
When the load changes, the speed of the corresponding diesel engine also understands relatively large fluctuations. If the speed is too large at the same time, the idling speed is also relatively high, which will affect the stability of the jaw crusher engine and accelerate the wear of the body. . If the speed regulation is too small at the same time, it will also cause the unstable operation of the engine.
jaw-crushers-structure
3. Improper operation
When feeding, suddenly increasing the feeding or changing the other properties of the material will cause the machine to temporarily fail to control, resulting in a phenomenon of rapid and slow speed, so that the jaw crusher becomes unstable under high-speed operation. Speed ​​up the wear of the eccenthc shaft.

4. Incorrect structure and layout
The main reason is that the structural design of the eccenthc shaft is unreasonable and stress concentration is easy to occur. It is mainly manifested in the large interference of the mating surface of the eccenthc shaft and the moving cone, too small filter fillet and no unloading groove, which is easy to cause long-term overload of the equipment Running, the eccenthc shaft will fatigue and accelerate wear, and for those eccenthc shafts with a smaller width, it is more prone to breakage.


Post time: Nov-12-2021