1 Scope of application

This regulation applies to the maintenance and use of the group company's single-rope winding mine hoist, shaft sinking hoist and JTP mine hoisting winch.

2 Equipment principle and structure

The single-rope winding mine hoist uses the electric motor to transmit the power to the reel of the winding wire rope through the reducer, so as to realize the lifting and lowering of the container; realize the speed regulation through electric transmission; the disc brake is braked by hydraulic and electric control; A position indication system to realize the depth indication of the container; a mechanical, electrical, and dual combined control system composed of various sensors and control elements to realize the monitoring and protection of the whole machine; to realize the information transmission inside and outside the hoist through computer and network technology . It is composed of motor, reducer, main shaft device, braking device, depth indicator, electric control system and console.

3 Equipment lubrication

Lubrication part

Lubrication method

Lubricants

Lubrication cycle (days)

Remarks

Main bearing

Manual oiling

Lithium Grease

Supplement every season, every year

Update

Reducer

Pressure lubrication

L-CKC industrial gear oil N22～N320

365

Sky Wheel Bearing

Manual oiling

Lithium Grease

Supplement every season, renew every year

Archway depth indicator gear

Oil pool

N68

180

Hydraulic station

HU-20 turbine oil or YB-N32 anti-wear hydraulic oil

365

Other bearings and relative moving parts

Manual oiling

Lithium Grease

60

Disc brakes must not contain oil

4　 Equipment inspection and maintenance

4.1 The specific content of the operator's self-inspection and self-repair

(1) If the bolts or pins are loose or damaged, they should be tightened or replaced in time.

(2) All lubrication parts, transmission devices and bearings must be kept well lubricated, and unqualified oil (grease) is prohibited.

(3) When the brake shoe wear reaches the specified value, it should be replaced in time. If the brake shoe and brake wheel or brake disc have oil stains, they should be wiped clean.

(4) If the position of the depth indicator is not on time, contact the handlebar in time to adjust it again.

(5) If the safety protection devices such as over-winding, loose rope and brake shoe wear are inaccurate or ineffective, they must be adjusted or dealt with immediately.

(6) When the light and sound signal fails or does not work, if the bulb is damaged or the position is inaccurate, the operator should be responsible for replacement or adjustment; if it is an electrical failure, contact an electrician for handling.

(7) Always keep the indoor environment clean and tidy.

4.2 Basic content of daily inspection

(1) Use an inspection hammer to check whether the connecting parts (such as bolts, rivets, pins, etc.) of each part are loose, and observe the meshing of the reducer gear through the inspection hole.

(2) Check the oil supply of the lubrication system and the working condition of the brake system.

(3) Check the looseness of the screw nut of the depth indicator, and whether the actions of the protection device and the instrument are normal.

(4) Check the stability of each rotating part, such as whether the bearing vibrates, and whether each machine base and foundation bolts (screws) are loose.

(5) Test the over-rolling protection device.

(6) Try the loose rope signal device once by hand to test various signals (including full warehouse, start-up, shutdown, emergency signals, etc.).

(7) Check the contact wear of each contactor (signal panel, rotor control panel, inverter, etc.), and repair (use emery cloth and small files) or replace the burned ones to keep their contact in good condition.

(8) Check the rotation of the rope adjusting clutch and the crown wheel, such as gaskets, bearings, etc.

 (9) Check whether the structure of the lifting container and its auxiliary mechanisms (such as car stop, connecting device, tank ears, etc.) is normal.

(10) Check the connection and lubrication of the springs, catchers, linkage rods, etc. of the fall arrester system.

(11) Check the working conditions of wellhead loading equipment (such as cart machine, car climber, car tipper, car stopper, rocking table or tank seat, safety door, etc.).

(12) In accordance with the "Metallurgical Mine Safety Regulations", check the working conditions of the hoist wire rope and the arrangement of the wire rope on the drum.

4.3 Basic content of weekly inspection

The content of the weekly inspection includes the content of the daily inspection, and the following tasks must be carried out:

 (1) Check the brake system (disc brake and block brake), especially the action of the hydraulic station and brake, adjust the brake shoe gap, and tighten the connection mechanism.

 (2) Check the operation of various safety protection devices (such as over-winding, over-speed, speed limit, etc.); check whether the rivets of the drum are loose and whether the weld is cracked; check the arrangement of the steel wire rope on the drum and the fixing of the rope head Is it reliable?

(3) Check and clean the catcher of the fall arrester, adjust and fill it with oil if necessary.

(4) Check the working condition of the balance wire rope according to the requirements of the "Metallurgical Mine Safety Regulations".

4.4 Basic content of monthly inspection

The basic content of the monthly inspection includes the content of the weekly inspection, and the following tasks are required:

(1) Open the observation hole cover and inspection door of the reducer, and check the gear meshing in detail.

(2) Check and adjust the hydraulic station and safety protection device in detail, and clean the hydraulic parts and pipelines if necessary.

(3) Disassemble the coupling and check its working conditions, such as clearance, end face tilt, radial displacement, whether the connecting bolts and pins are broken, loose and worn.

(4) Check the operation of the reel and main bearing.

(5) Check and replace the lubricating oil in each part, clean or replace some parts of the lubrication system (such as oil pump, oil filter and pipeline, etc.).

(6) Clean up the anti-drop gear system and oiling, adjust the gap. (7) Check the equipment of the well, such as the brake wire rope and buffer wire rope for the tank channel, the tank beam and the fall arrester.

(8) Adjust the operating parameters of the electrical control system and replace failed electrical components.

(9) Test the action of safety protection device and braking system.

(10) Check the operation of the sky wheel.

5 　 common failure causes and troubleshooting methods

malfunction

the reason

Method of exclusion

1. Braking device

11. The brake is not released (not released)

1. No oil pressure or insufficient oil pressure

2. The brake seal is damaged

1. Check the hydraulic station

2. Replace the sealing ring

2. Slow brake release and braking

1. The hydraulic system has air

2. The valve is not in the normal position, or oily

3. The brake shoe gap is too large

4. The oil is too thin, too thick, or leaks too much

5. The brake operating handle is not in place or the moving angle is inappropriate

1. In the braking state, deflate at the highest point

2. Check and clean the valve and hydraulic system

3. Readjust the gap

4. Change oil, check and repair hydraulic system

5. Overhaul and adjust the operating handle

3. The braking time or braking distance is too long, and the braking force is small

1. The load is too large or the speed is too high

2. The brake shoe gap is too large

3. There is oil stain on the brake disc and brake shoe

4. All brakes do not work

5. There is a problem with the disc spring set

1. Check for overload and speed

2. Adjust the brake shoe gap

3. Clean the brake disc with trichloroethylene and replace the brake shoes with oil

4. Check the hydraulic station

5. Replace the disc spring set

4. Uneven wear of brake shoe

1. Uneven brake correction

2. The brake disc deflection is too large, the string movement or the spindle tilt is large

1. Check the installation technical requirements

2. Heavy vehicle brake disc, check and adjust the spindle inclination and bearing clearance

5. The hydraulic station is not operating normally

1. The oil is not clean

2. Failure of hydraulic components

11. Clean the solenoid valve and replace the hydraulic oil

22. Check and replace hydraulic components

2. Reducer (planetary gear reducer)

 6. Bearing heating

1. The bearing clearance is uneven or damaged

2. The lubricant is not clean

1. Contact the manufacturer for repair

2. Add oil or change oil

7. The reducer has loud noise or vibration

1. Bearing wear or excessive clearance

2. Poor lubrication

3. Overload, overspeed operation

4. The reducer bolts are loose

5. Foreign matter fell into the reducer and damaged the tooth surface and tooth profile

1. Contact the manufacturer for repair

2. Change the appropriate lubricant as required

3. Use the hoist as required

4. Check and tighten all bolts

5. Contact factory for repair

8. Oil leakage of reducer

1. Too much fuel

2. The joint bolts and fastening bolts are not compressed

3. The seal is damaged

1. Drain the oil to the specified oil level

2. Check the tightness

3. Replace the seal

3. Spindle device

9. The drum makes an abnormal noise

1. The coupling parts are loose or broken, causing relative vibration

2. Weld cracking and deformation

3. Damaged roller liner

1. Fasten, repair or replace

2. Carry out welding repair, reduce load or reinforce the drum

3. Replace the roller liner

Four, other

10. The hoist is noisy

1. The concentricity of the coupling does not meet the requirements

2. The hoist is overloaded and running at speed

3. Poor lubrication

1. Check and adjust

2. Reduce the amount of lifting and operate according to regulations

3. Strengthen lubrication

11. Inaccurate depth indicator

1. The screw drive is unstable

2. The pointer vibrates or crawls

3. The self-aligning machine buzzes

1. Check that the rod is not worn or bent; the fit of the screw and nut. Find the problem and deal with it in time.

2. Clean the transmission mechanism and strengthen lubrication

3. Check that the shaft is not deformed to adjust or replace the whole machine.

12. The wire rope wears and breaks quickly

1. Poor product quality

2. Poor lubrication

3. The wire rope arrangement is not normal

4. Frequent acceptance of shock loads

1. Pay attention to product selection and pre-use inspection

2. Lubricate according to regulations

3. Replace the roll liner

4. Operate according to the regulations to avoid sudden stop

13. The hoist is weak, the motor heats up, and the current exceeds the rated current

1. The operating voltage is too low

2. Overload operation of hoist

3. Poor motor heat dissipation

4. Three-phase current unbalance

1. Increase wire diameter

2. Reduce the amount of lifting or reduce the speed of the hoist

3. Strengthen heat dissipation

4. Inspection and processing

14. The wire rope arrangement is abnormal

1. The hoist installation is skewed (the center line of the crown wheel and the drum is skewed)

2. The spindle is not level

1. Adjust

2. Adjust the spindle level

15. Hoist vibration

1. Coupling axis between components is not concentric

2. The anchor bolts are not firmly fixed

1. Check and adjust

2. Check and fix

16. The sky wheel lining wears quickly and there is abnormal noise in operation

1. The center line of the crown wheel and the drum is skewed

2. The top wheel lining is of poor quality

3. The bearing clearance of the crown wheel is too large

4. Lack of oil in the crown wheel bearing

1. Adjust

2. Pay attention to product selection and pre-use inspection

3. Adjust or replace the bearing

4. Refuel in time

17. Abnormal noise when lifting the container

1. Lift container deformation

2. Wear of gasket or bushing

1. Partial repair or replacement

2. Replace