1. Conveyor deviation
    (1) The main reason;

   Entire conveyor belt, there are some poor quality or joint conveyor itself is not correct.

   Roller or rollers installed malposition.

   Roller is jammed.

   Rollers or roller surface has sticky slime, debris.

   Conveyor loading points machine malposition.

   The body is not right.

   Treatment:

   The poor quality of some conveyor belt removed, trimmed or re-fitting.

   Adjust the position of the roller or rollers, so that each roller and vertical centerline axis of the drum and belt conveyor.

   Processing is roll Cato.

   Parking, scrape the slime or debris.

   Adjust the position of coal flow to unload in the center of the conveyor belt.

    2 slippage

   The main reason:

    Drum of water.

    Conveyor belt tension is not enough.

    Too much cargo on the conveyor belt.

    Serious deviation, the conveyor belt is stuck.

    Sweepers failure, resulting in between the rollers and the conveyor belt has chunks of foreign matter.

    (2) Treatment method:

    Parking, surface water or slime and conveyor roller surface clean.

    Adjust the tensioning device, so elastic fit.

    Removing part of the cargo manual, normal operation after installation.

    Adjust the rollers and roller, so that the conveyor belt without deviation.

    Re-adjust the sweeper remove foreign bodies.

    3. Broken belt conveyor

    (1) The main reason:

    Conveyor belt tension is too great.

    Uneven load distribution severe, or severe overload.

    Tail drive pulley or roller into larger foreign bodies.

    Conveyor belt joint quality does not meet the requirements.

    Conveyor belt wear gauge, aging, or conveyor itself substandard quality.

    (2) preventive measures:

    Strengthen the inspection and maintenance of the conveyor, it is often in good condition.

    Improve the production environment, so that the conveyor has a good working environment.

    Always check and adjust the tension device, so that the conveyor belt tension is appropriate.

    When loading should be uniform, centralized prevent overloading.

    Keep the conveyor belt running without deviation, roller, roller rotation flexibility.

    To make conveyor belt joint in strict accordance with the standard, the use of qualified conveyor belt buckle, and regular checks of joint quality.

    4. Conveyor fire

    (1) The main reason:

    Use of non-fire-retardant conveyor belt, or unqualified retardant conveyor belt.

    Hold down the conveyor belt conveyor overloading or due to severe deviation and conveyor rollers do not turn other reasons, so the conveyor belt slippage, long conveyor belt drive roller and friction heat, causing a fire.

    Roller does not turn or rotation is not flexible, high temperature, or fail to ignite the debris conveyor.

    Hydraulic coupling using substandard fusible plug and flammable media, will likely cause a fire.

    High-speed rotating machinery parts or conveyor belts for a long time with coal, waste rock, wood, cables, pipelines and other friction fire.

    (2) preventive measures:

    The use of qualified fire-retardant conveyor belt.

    Maintenance of strengthening the conveyor, conveyor belt to prevent slipping, and timely treatment.

    Timely replacement of faulty idlers.

    The use of hydraulic coupler must meet the requirements.

    To set the fire pump, a water valve located every 50m, and is equipped with a fire hose and adequate fire fighting equipment.

    Strict implementation of the relevant provisions of the "Regulations", the installation of various protective devices.

    5. Tear conveyor accident

    (1) The main reason:

    Conveyor deviation serious friction with the rack.

    The belt tension is too large or joint damage.

    Machine at the end of a sharp foreign body in contact with the conveyor belt.

    (2) preventive measures:

    Timely adjustment of the deviation of the conveyor belt, prevent serious friction with the rack.

    Adjust the tensioning device, do a good job checking and handling damaged joints.

    Prevent the conveyor belt to hang onto metal components or sharp foreign body stuck.

    Installation ripstop protection.