Characteristics of multi-rope friction hoists

Release time :

07 Nov,2025

Source:

Mine hoists are primarily used in mines to lift and lower personnel, materials, and equipment. They can transport heavy loads quickly and steadily in the vertical direction, significantly improving the efficiency of coal mining operations.

Characteristics of multi-rope friction hoists

When toxic or harmful gases underground pose a serious threat to human life, or when signs of such gases are detected and they pose an imminent danger to life, on-site personnel should promptly open the casing of the compressed-air self-rescue device, then activate the pneumatic valve, put on the mask, and begin breathing while seeking assistance.

The operation steps are as follows:

1. Pull out the latch and open the door;

2. Open the intake valve and observe the pressure gauge.

3. Take out the breathing mask, place it over your mouth and nose, and breathe naturally. Adjust the mask to fit comfortably on your head (if you feel uncomfortable, pull up the pressure adjustment knob and turn it clockwise to increase the pressure, or counterclockwise to decrease the pressure; adjust it until the desired pressure is reached—typically between 0.05 and 0.07 MPa—and then press down on the adjustment knob to lock it in place).

Maintenance and Precautions:

1. Do not pull the mask forcefully, as this could disengage the gas tube connector or break the tube itself.

2. Do not bang or strike forcefully.

3. Maintenance must be performed monthly to ensure that the ventilation of self-rescue stations or systems is in good condition, and to check whether there are any gas outlets and whether the handles of pneumatic valves are flexible and reliable.

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Characteristics of multi-rope friction hoists