1. The equipment use and change of state
The damage to the breaker failure is largely due to operating machine in the process of excessive use of energy. The energy associated with equipment operation such as loading, vibration, temperature and components of the internal energy. Internal energy is mainly refers to mechanical energy, thermal and chemical energy. When the energy is too high, easy to wear, deformation, corrosion and other damage to the parts. The emergence of these problems can make equipment parts structure changes (such as size, clearance, etc.). These changes will further affect the equipment operation (such as speed, power output, etc.). With the final parts wear unceasingly, the structural parameters of damaged degree beyond the allowed range, there is a potential problem of the device. To avoid the occurrence of this phenomenon, the technician must prepare the maintenance plan, eliminate the abnormal mechanical problem, lest cause damage.

2. Maintenance feature
There are a lot of the characteristics of the mechanical fault include potential, vagueness, debilitating, etc. Good technical personnel to understand these features for handling mechanical failure has a lot of help. The maintenance including maintenance and repair of the machine. Maintenance can be divided into: routine maintenance, regular maintenance and special maintenance. Repair is divided into: minor repairs, repair, overhaul. Equipment maintenance and maintenance is into the category of preventive maintenance, repair belong to a class of breakdown maintenance. Below, in view of the features of the crusher maintenance in detail:
(1) Preventive maintenance. The object of the preventive maintenance is a crusher with potential failure, the purpose is to reduce to work long hours to equipment damage, makes every effort to keep the best state of the machine. The main content of the crusher preventive maintenance are: the machine cleaning and lubricating oil filter and replace; The machine parts inspection, found that injury in time for processing and replacement. In the process of maintenance, technical personnel should pay attention to: different types of crusher, the content and degree of maintenance and the cycle is different. The more complex structure, the higher maintenance requirements, the greater the scope of preventive maintenance, completes the prevention maintenance can greatly reduce the risk of mechanical failure.
(2) The breakdown maintenance. Breakdown maintenance is mainly in order to eliminate mechanical failure, make the equipment return to normal operation state. Small maintenance generally refers to mechanical repairs locally, is for the less damaged equipment. For serious damage of crusher, maintenance personnel to be in or big maintenance, return to ensure equipment in good condition.