1

Fluid coupling slip

1. The water filling capacity of the hydraulic coupling is insufficient

2. Too much coal is transported in the middle tank, exceeding the load

3. The scraper chain is stuck

1. Water injection according to regulations

2. Clear part of the coal in the middle tank

3. Deal with the stuck scraper chain

2

Fluid coupling heat

1. The connection cover is not well ventilated

2. Insufficient liquid filling

1. Clear the ventilation holes of the connection cover

2. Fill oil according to regulations

3

Liquid coupling fusible plug melting spray liquid

The conveyor is unstable, scratched, stuck and overloaded, causing the temperature of the fluid coupling to rise above the specified value

Clear a fault or obstacle somewhere, replace the fusible protection plug, and refill according to the regulations

4

Blasting Liquid of Explosive Plug Burst Disc of Hydraulic Coupling

Conveyor overload

Replace the bursting disc and fill the liquid according to the regulations

5

Other failures of the fluid coupling

See instruction manual of hydraulic coupling

See instruction manual of hydraulic coupling

6

Scraper chain comes out of middle slot

1. The whole machine is too bent

2. The scraper chain is too loose

3. Sprocket is seriously worn

4. The scraper is severely bent, and the distance between the two rings becomes smaller

1. The horizontal and vertical bending angle of the adjacent middle groove should not be greater than 3 degrees when laying and moving

2. Tension the scraper chain

3. Replace the transmission sprocket

4. Straighten or replace the scraper

7

Oil leakage at each sealing part and the joint surface of the box

1. Loose fastening bolts on the joint surface

2. The oil seal is damaged or the oil seal spring falls off

1. Clean the joint surface, and then tighten the bolts after applying paint

2. Replace the oil seal

8

Motor temperature is too high

1. Long time overload operation

2. Serious back coal

3. The chain of the scraper is too tight

4. The three-phase imbalance of the motor, the motor bearings are seriously worn, the motor is buried in coal or the fan is damaged, which affects the heat dissipation of the motor.

1. Avoid excessive concentration of coal

2. Clean the bottom coal back to ensure the unloading height of the machine head

3. Adjust the tension of the scraper chain

4. Overhaul the motor and remove the coal collected around the motor

9

Other faults of the motor

See motor instruction manual

See motor instruction manual

10

Scraper chain periodic shock

Scraping phenomenon when the scraper chain is running

Dealing with scratches

11

Reducer operation sound is abnormal

1. Poor gear meshing

2. Severe wear of bearings or gears

3. The axial clearance of the bearing is too large

1. Adjust the meshing gap

2. Replace worn bearings or gears

3. Adjust the axial clearance of the bearing

12

Blind shaft bearing temperature is too high

1. The sealing ring is damaged and the lubricant is not clean

2. Bearing wear

3. Insufficient oil

1. Replace the sealing ring, clean the bearing, and replace the oil

2. Replace the bearing

3. Oil injection