What is the workflow of shearer?

When the left and right cutting rollers rotate, the shearer moves left or right along the coal wall, and the shearer continues to move and the cutting rollers continue to rotate, so the coal is cut off from the coal wall and falls on the scraper conveyor at the bottom of the shearer, and the cut coal is transported out. Because the coal cut by the cutting drum is sometimes too big for the scraper conveyor to transport, there is also a crushing drum on the shearer for crushing large coal mines. Because of the different thickness of coal seams, it is sometimes necessary to raise or lower the front and rear cutting rollers to cut coal seams with different thicknesses.

The working process of shearer mentioned above is several main functions that shearer must have. In order to complete these actions, the shearer must provide mechanical power, and the mechanical power is provided by the motor. Therefore, controlling the action of shearer is the process of controlling the rotation, speed change, commutation and stop of motor.

Let's talk about the motor that drives these main actions:

1. The rotation of the left cutting drum is driven by the motor M4.

2. The rotation of the right cutting drum is driven by M5 motor.

3. The left and right movement of shearer is completed by the left and right traction motors M2 and M3.

4. The rotating power of the crushing drum is provided by the motor M7.

5. The lifting of the left and right cutting rollers is completed by the hydraulic system, and the power of the hydraulic system is provided by M6.

The main work of the electric control system of shearer is to control these motors and other protective functions.