The reason why the jaw crusher suddenly cracks the frame

The reason why the jaw crusher suddenly cracks the frame

The jaw crusher frame is the most important part of the whole equipment. Its machine weight accounts for a large proportion of the whole machine, and the processing and manufacturing workload is also large. The strength and rigidity of the frame are good for the performance of the whole machine and the life of the main parts. Have a great impact. The jaw crusher frame is divided into structures according to the structure. There are integral and combined frames. The overall frame is not suitable for large crushers due to manufacturing, installation and transportation difficulties, and is mostly used for small and medium-sized crushers.

With long-term operation, the operator's illegal operation will lead to the occurrence of faults at different frequencies of the crusher equipment, which will affect the normal production capacity and, in serious cases, accidental personal injury or death. Of course, the jaw crusher is no exception. The following is the reason for the sudden cracking of the jaw crusher frame:

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  • 1. The casting technology of the jaw crusher during production or the quality of the equipment itself caused by the incomplete welding;
  • 2. The two bolts on the bearing cover of the rack are loose;
  • 3. When the installation is not strong enough, the jaw crusher loosens in the vibration generated by the jaw crusher for a long time, thus hitting the front plate of the rack and causing damage to the frame;
  • 4. The eccentric shaft, the pin is damaged or the expansion sleeve is loose, so that the direction of the weight of the flywheel is misaligned;
  • 5. The rigidity of the base of the main engine base is poor or collapsed, and the frame is beating;
  • 6. The fixed and movable jaws continue to be used after the tooth shape is worn;
  • 7. The selection of the bracket and the toggle pad is unqualified and cannot withstand the huge impact force. When the crusher is under strong impact, the bracket does not have self-breaking protection, causing the frame to shatter.