1. The voltage at the work site is too low to break the stone, causing the car to be stewed. In this case, it is necessary to re-adjust the voltage of the work site. The eccentric shaft tightening bush is loose, causing no gap on both sides of the bearing seat of the frame, making the eccentric shaft stuck and unable to rotate, and the tightening bush needs to be reinstalled or replaced.      2. We consider that due to the harsh working environment and heavy workload, the bearing is seriously damaged, and the new bearing can be put into production after replacing it with a new one.
     3. Because the belt of the driving sheave of the impact crusher is too loose, the belt is slipping due to the weak rotation. In this case, the replacement of the belt is enough.
     4. The material viscosity is too high or the feeding speed is too fast, causing the discharge port to be blocked, resulting in a full warehouse. Clear the blockage of the discharge port to ensure the unblocked production of the discharge port in the future.