Generally, it is only necessary to bias the belt to one side of the driven wheel, and the driven wheel on that side can be tensioned. Generally speaking, the driven wheel cannot be used for adjustment. The belt of the driving wheel runs to one side and the belt of the driven wheel runs to the other side, which is a diagonal deviation. If the diagonal deviation is serious, it is generally necessary to adjust the driving wheel, and the side of the driving wheel with the motor cannot be adjusted.
When the deviation range of the belt conveyor is not too large, the belt can be automatically adjusted by using the law of "not running before running". When the belt deviates, it will touch the stop roller on the grooved deflection adjusting roller. Due to the friction between the retaining roller and the belt edge, it moves forward along the running direction of the belt, while the other side moves backward relatively. At this time, the adhesive tape moves to the folding roller side until it returns to the normal position.
Preventive measures for belt deviation
1. Strengthen quality inspection and maintenance, select belts produced by regular and quality-guaranteed manufacturers, carefully check the belt conveyor before installation, conduct quality inspection on the belt surface, rollers, cleaning and tensioning devices, resolutely replace unqualified ones, and ensure the installation quality from the source. Cylinders with large external surface machining errors must be returned to the factory for machining.
2. In long-term use, if the drum with uneven wear on both sides is found, the surface of the drum should be cleaned first, and then re-processed after replacement until the diameter is consistent. All belts that are severely aged and deformed and cannot be used normally should be replaced. The vulcanized joint of the belt must be flat, the center lines of two butt belts must coincide, and the vulcanized joint is perpendicular to the center line of the belt.
3. Strengthen equipment management and operator training. The coal preparation plant should strengthen the equipment management, establish a perfect mechanical and electrical equipment management system, strengthen the training of operators, carry out daily maintenance and regular overhaul of the belt conveyor, and ensure the electrical protection of the belt conveyor against deviation, longitudinal tearing, smoking, under-speed, anti-blocking and switch-pulling. , should be effective and reliable.