What are the precautions for the maintenance and repair of conveyor belts?

As the core component of belt conveyors in industries such as mining,coal,and ports,the maintenance and upkeep of conveyor belts affect equipment operation efficiency,production safety and service life.To make better use of conveyor belts and extend their service life,it is essential to strengthen regular inspections of conveyor belts.

I.Maintenance Precautions

1.Daily Inspection

Check the conveyor belt for deviation,tearing,scratches and rubber layer peeling,check whether the bearing housing and bracket are loose or displaced.

Check whether the idlers rotate flexibly without abnormal noise or jamming.Inspect the pulley lagging for wear,debonding and cracking.

Check whether the cleaner and scraper are closely fitted and beyond wear limit.check if the lubrication points have sufficient oil volume without leakage.Detect abnormal noise,vibration and temperature rise,and handle faults in a timely manner.

2.Lubrication management

Bearings,pulleys and tensioning devices shall be greased periodically.Shorten the lubrication cycle under heavy load,high dust and humid working conditions.

Use special high-temperature resistant,wear-resistant and waterproof grease.Avoid mixing different types of grease.

3.Belt deviation correction

Belt deviation is mostly caused by material adhesion,misaligned pulleys,skewed idlers and uneven stress.It is necessary to clean the materials on the surface of pulleys and idlers in a timely manner.

Long-term and severe belt misalignment will cause belt tearing and equipment damage.Regularly adjust the brackets,tensioning devices and pulley positions to correct misalignment.

4.Safety precautions

Maintenance must be preceded by power cut,lockout-tagout and confirmed shutdown.It is prohibited to approach,clean or maintain the equipment while it is in operation.

Replace parts with original factory specifications only.Non-standard alternative parts are prohibited.Conduct regular overall safety inspections of the complete machine to eliminate potential hazards.

II.Maintenance precautions

1.Conveyor belt body maintenance

Avoid impact from sharp materials to prevent longitudinal tearing of the conveyor belt.Timely clean adhered and accumulated materials to avoid deviation and wear.

Regularly inspect conveyor belt joints. Repair immediately if edge warping or cracking is found.Keep the belt tension moderate.excessive tightness may cause shaft breakage,while excessive looseness will lead to slipping.Avoid prolonged exposure to sunlight,rain,and acid-base corrosion to extend the service life of the rubber belt.

2.Pulley maintenance

Regularly inspect the pulley shell for deformation,depression and cracking.Timely replace or re-lag the pulley in case of abnormal wear of the rubber lagging.

If the bearing temperature rises abnormally or abnormal noise occurs,stop the equipment immediately for inspection and maintenance.Keep the seal intact to prevent dust,water and mud from entering the bearing chamber.

Check the pulleys for oil seepage and leakage,and replenish oil promptly where insufficient.Long-term operation under overload or impact load is strictly prohibited to prevent shaft fracture.

3.Idler maintenance

Check whether the idlers rotate flexibly.Promptly remove any foreign matter on their surface.Special attention should be paid to the return idlers,as accumulated deposits may cause conveyor belt deviation and edge damage.Damaged or seized idlers must be replaced in a timely manner.

Replace corroded,deformed and damaged idlers in batches to ensure stable operation.Waterproof and sealed idlers shall be adopted for outdoor and humid environments.

5.Sealing,waterproofing and dustproofing

Replace damaged labyrinth seals and skeleton oil seals immediately.Keep the bearing chamber clean and dry to extend service life.Perform anti-corrosion and rust-proof treatment in humid and corrosive environments.