Downward transportation belt conveyor is to transport materials from high to low. At this time, the conveyor only needs to overcome friction, so the load is very light. If its conveying material gravity in the direction of the component force is greater than the rubber belt machine itself running friction , the motor rotor will accelerate passively under the drag of the material. When the motor speed exceeds its own synchronous speed, the motor will feed back electricity and generate braking force to limit the motor speed to further increase.That is, the potential energy of material falling is converted into electric energy through the motor. Therefore, the electric energy generated by the transported materials can be put back into the power grid through a series of means.
The downward transportation belt conveyor is a special conveyor that transports materials from high to low. It has negative power during transportation of materials, and the motor is in the state of power generation braking. It can effectively control the full-load start and stop of the belt conveyor, especially the controllable soft brake of the belt conveyor can be realized under the condition of sudden power loss. Preventing the belt conveyor from running way is the key technology of the downward belt conveyor.
1 Adopting power generation operation mode the conveyor runs in the “zero power loss” state, and the excess power can also be used by other equipment.
2 Through the signal acquisition logic design, the system can not lose the logic design of the whole system after the cable is interrupted.
3 Adopting protection device design, a test network for the entire downward belt conveyor monitoring is built by a simple electrical switch.
4 The logic control of the emergency brake lock system ensures the safety and reliability of the conveyor under a large angle and high risk.
5 Long-distance signal stable acquisition anti-interference circuit design makes the transmission of long-distance acquisition signal reliable and fidelity.