What are the electrical contact protection devices for non crushing elevators

The crusher free elevator is a continuous conveyor that uses a series of hoppers evenly connected to a circular traction component to vertically lift materials. It is divided into three types: ring chain, plate chain, and belt. Suitable for lifting and feeding products such as food, medicine, chemical products, screws, nuts, etc., the automatic stop and start of the machine can be controlled by signal recognition of the packaging machine. Therefore, in order to ensure the safe use of the staff, what are the electrical contact protection devices for the crusher free elevator?

1. Brake oil pressure overpressure protection relay contact: When the brake oil pressure overpressure occurs, the oil pressure relay contact closes. On the one hand, it emits a light signal, and on the other hand, it disconnects the normally closed contact in the AC circuit.

2. Power brake voltage loss relay contact: When the controllable power brake power supply has no voltage or the voltage is too low, the contact opens.

3. Loss of flow protection relay contact: used for disconnection protection of depth indicator automatic angle machine. When disconnected, the car contacts open.

4. Roll over switch contact: Disconnect when rolling the lifting container. One set is installed on the derrick, and the other set is installed on the depth indicator, with the same function. In addition, there is a winding reset switch that is pressed to short-circuit the opened winding lifting device, thereby connecting the AC circuit and releasing the safety brake to reduce overvoltage. Roll container. After restoring the container to its normal position, it should be disconnected in a timely manner, otherwise it will lose its anti rollover protection.

5. Brake shoe wear switch contact: When the brake shoe is excessively worn, the contact will disconnect.

6. Oil cap opening auxiliary contact: When the main circuit passes current, causes the high-voltage circuit breaker to trip due to noise or other reasons, the safety pull contactor will be disconnected at the same time to lift the safety brake of the hoist.

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