The coupling is connected to the reducer and the crushing roller. The output power of the motor is transmitted to the crushing roller by the coupling through the reducer, and the external load is directly applied to the crushing roller, and it is reacted to the reducer through the coupling. Due to the complex working conditions of the crusher, there are more large pieces of coal gangue during the crushing process. The large pieces of coal gangue periodically fall from a height to form a periodic impact on the crushing roller, and the periodic peak impact can easily cause the reducer to hit Tooth loss, gear fatigue damage, bearing damage, cracking of the outer box.
As the connecting part of the crushing roller and the reducer, considering its anti-vibration and damping effect, it can absorb vibration to reduce the peak impact of the reducer. Excessive load and vibration can easily cause damage to the reducer. The crusher roller components mainly include the crusher gear roller, the two supporting bearings at the shaft end and the coupling. After the coupling is produced, it needs to be packaged. Some couplings have an aluminum cover on the surface, which is afraid of falling. Some are loaded and unloaded many times during long-distance transportation, which will cause surface scratches.
In order to avoid these problems and cause loss of time and money to customers, it is necessary for the coupling manufacturer to pack it before leaving the factory. The coupling is connected to the output shaft of the reducer. The output shaft of the reducer is equipped with a large gear, and the shaft end is supported by 2 bearings. When selecting the coupling, it should be considered that it can transmit enough torque; it has a certain degree of anti-vibration, Vibration reduction effect. Nowadays, many couplings require heat treatment, some require quenching, and some require quenching and tempering. Through quenching and tempering, the internal structure of the material is changed to enhance toughness. The quenched and tempered hardness is expressed in HRCHRB.
