1. The working principle of mobile stone crusher
When the raw materials that conform to the feeding size enter the crusher, they are immediately hit to the impact plate with a high-speed rotating hammer head of 60m/s, and then repeatedly hit by the hammer head. 

Finally, the further crushing is completed by squeezing between the rotating hammer head and the wall of the impact plate. The discharge particle size of coal crushing machine can be determined by adjusting the distance between impact plate and hammer head according to the fineness of the discharge.

2. The working principle of the shock absorption platform
The damping platform is composed of mesa, pedestal, spring group and damper. 

It is a combination of the spring group and the damper between the table and the base to reduce or eliminate the dynamic load produced during the start and operation of the mobile stone crusher, so as to reduce the damage caused by the vibration to the civil structure.