How to reduce the noise of mining winch

2025-03-17 09:58:00

The operating instructions for the hydraulic station of the mine hoist are as follows:

After the system is normal, turn on the power switch and the device enters the normal working state.

Function: The hydraulic station of the mine hoist has two electro-hydraulic ratio control oil supply devices, which can convert the power switch and signal switch on the operation panel.

1. Self-test status

Press the manual detection button within 3 seconds after pressing the reset button, the system enters the detection state, and the solenoid valve 1 to the solenoid valve 7 runs sequentially, and the running time of each solenoid valve is 2 seconds, which is used to detect the operation of the solenoid valve

Whether it is normal, if there is a fault, the alarm display; Press the reset button again to return to normal working condition.

2. Normal working condition

Start or press the reset button, the system enters the normal working state, and the action of the solenoid valve is shown in the status table: the solenoid valve 5 is not energized, and the other solenoid valves are energized.

3. Safety braking in the well (secondary braking)

Before the lifting vessel is in place, that is, before the wellhead container is in place signal is closed, the safety node AC signal is closed. In order to meet the requirements of braking deceleration, secondary braking is adopted. The action of the solenoid valve is shown in the status table

Show: solenoid valve 3, 4 power off after delay of 5 seconds, solenoid valve 5 is energized, and other solenoid valves are powered off immediately.

4. Wellhead safety braking (first-stage braking)

When the lifting container is in place and the signal of the AC contact is closed, emergency braking (first-level braking) is used to prevent vicious accidents. The action of the solenoid valve is shown in the status table: i.e. all

Solenoid valve for uniform de-energizing.

5. Overvoltage protection

When the hydraulic system fails, the pressure gauge joint of the overvoltage electric joint whose pressure exceeds the set value of the system is closed, and the sound and light alarm are realized.

6. Differential pressure protection

When the oil filter is blocked, the differential pressure is closed, and the audible and visual alarm is implemented.

7. The protection temperature is too high

When the temperature of the fuel tank is too high, the oil temperature monitoring joint is closed, and the sound and light alarm is implemented.

8. Solenoid valve fault monitoring

If the solenoid valve fails during operation, the solenoid valve position monitoring sensor joint is closed, the secondary braking is implemented, the solenoid valve action and the safety braking in the well, and the sound and light alarm.

9. Pressure regulation function

After pressing the reset button on the electric control box, press the pressure reduction button. At this point, the relief valve on the hydraulic station can be adjusted to adjust the first-stage brake oil pressure value. After adjustment, you need to press the pressure down button again to reset.

10. Safety valve adjustment function

By rotating the safety valve switch on the driver's console, the hoist can adjust the oil pressure value of the hydraulic station of the mine hoist under braking state, and verify the correspondence between the current value and the oil pressure of the hydraulic station of the mine hoist.