Strengthening regular inspection and maintenance of conveyor belts can extend their service life. When inspecting the conveyor belt, the following parts are mainly checked:
Conveyor belt: The inspection of the conveyor belt includes checking whether the upper and lower surfaces are damaged, whether the belt edges are damaged, whether the belt core skeleton is damaged, and whether there are any phenomena such as detachment, glue opening, delamination, opening, displacement, and deviation at the joint parts. If the powder is found to be damaged, simple partial repairs should be carried out immediately. When the damage is significant, the vehicle should be stopped immediately for thorough repairs. If the damage is severe, it must be replaced.
Bearing point: The bearing point is the easily damaged part of the conveyor belt. Belt speed, as well as material particle size, impact force, and direction of load-bearing operation related to the operation of the conveyor belt, are important factors to consider. The width of the receiving end of the feeding chute at the discharge port should be large enough.
Loading materials at the points where the conveyor belt runs at an angle will exacerbate the wear on the surface of the tape. The impact of materials on the tape and off center feeding can cause the tape to run along the roller towards the other side, resulting in damage to the edge adhesive and increased wear on the local surface adhesive.
Materials with high specific gravity and sharp edges can cause some impact or sliding on rapidly moving adhesive tape, and can also scratch and wear the surface. The general method to reduce this type of wear is to first put the powdered material on tape, and then load large pieces of material, so that the powdered material acts as a cushion to protect the tape.
Set up screening strips with a certain spacing at the feeding trough. Fine materials first fall onto the tape through the gaps of the screening strips to form a cushion layer, while large materials slowly fall onto the cushion layer after passing through the screening strips to reduce their impact on the tape.
Material guide groove: The material guide groove is another cause of surface wear on the tape, and the closer it is to the tape, the more severe the possible wear. The guide groove should not come into contact with the tape, and there should be a certain gap between the bottom edge and the tape. The gap should be wedge-shaped and gradually increase in the direction of operation. The rubber anti overflow skirt edge at the lower edge of the guide groove should be checked regularly to prevent material from getting stuck. The fixed part of the loading point device must not come into contact with the surface of the tape, and materials are not allowed to get stuck in the guide groove.
All rollers should rotate flexibly. Improper selection of roller diameter has a negative impact on the service life of the belt.
If there are many attachments on the drum, it will cause the conveyor belt to deviate, abnormal wear of the covering rubber, and local fatigue or even rupture of the belt core. Therefore, it should be checked regularly and cleared in a timely manner.
Active roller coating is used to increase the friction coefficient, reduce tension, and minimize slippage caused by wet conditions. Slotting with adhesive improves the traction of the adhesive and the cleaning of the tape, extending the lifespan of the roller. When the outer rubber of the roller is abnormally worn, it should be replaced as soon as possible.
Upper and lower idlers: When inspecting the idlers, foreign objects attached to the surface of the idlers should be removed, especially paying attention to the lower idlers. Attachments can sometimes cause the conveyor belt to deviate and cause damage to the belt edges. Damaged and non rotating rollers must be replaced promptly. In addition, strict adherence to the management and lubrication regulations of the rollers should be observed. If too much butter is injected, it will leak onto the conveyor belt. After the surface of the conveyor belt is coated with butter and lubricating oil, the rubber will become soft, expand, delaminate, peel off, and even cause the conveyor belt and pulley to rotate out of sync, resulting in abnormal wear of the rubber belt.
Improper setting of the position of the upper roller and the inclined bending part (curvature radius) can cause abnormal bending of the belt, leading to fatigue damage and increased wear on the non working surface of the belt, resulting in longitudinal cracks. When there is material adhering to the surface of the roller, the roller will bulge, causing the belt to bounce and scatter material during operation, and even causing damage to the belt. Therefore, it must be removed in a timely manner.
Tensioning device: Check whether the tensioning device can move, the stroke size, and whether the sliding condition of the guide frame is good, and regularly inject oil into the guide frame. Insufficient tensioning stroke will reduce the safety of the tensioning device. Excessive tension can accelerate the fatigue of the conveyor belt, thereby increasing its elongation and ultimately affecting its normal operation. If necessary, re bonding is required. The tension is too low, causing the belt to slip at the driving roller, which also accelerates the wear of the belt. Therefore, the tension or stroke of the tensioning device should be adjusted in a timely manner.
