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Reasons and treatment methods for belt conveyor belt deviation

May 12,2023

Reasons and treatment methods for belt conveyor belt deviation

1. Adjusting the roller group

During the operation of the belt conveyor, if the belt deviates to one side in the bearing section, it indicates an error in the verticality of the bearing roller group installation position and the centerline. Automatic centering roller groups can be installed for adjustment, usually installed every 20-30m, but sometimes the effect is not good. Alternatively, use the adjustment eyes on the longitudinal beam to adjust the position of the roller group, in order to solve the problem of deviation. On which side of the belt is tilted, the side of the roller group moves forward towards the running direction of the belt conveyor belt, or the other side moves backward. The adjustment of the support rollers should start from the deviation point, with less adjustment for each support roller and more adjustment for the number of support rollers. This way, the effect of adjusting the deviation is better. Additionally, it is recommended to adjust only one side to avoid confusion.

2. Adjusting the position of the rotating drum and the directional drum

Belt conveyors generally have more than three rollers, and all rollers must be installed perpendicular to the centerline of the belt conveyor's length direction. If the deviation is too large, it will inevitably cause deviation. If the belt of the belt conveyor deviates at the unloading drum of the machine head, the drum shaft on which side the belt deviates will be top note a short distance along the belt running direction (by adjusting the adjusting bolts of the bearings on both sides of the drum); If the belt deviates at the end of the machine towards the drum, the drum on the loose side of the belt should be moved forward along the direction of the return belt (by adjusting the bolts). If there is belt deviation between the driving drum and the redirecting drum in the belt storage bin, the adjustment method for the unloading drum of the machine head can be referred to for handling.

3. Clean the surface of the drum or replace the drum again

The processing error on the surface of the drum, or the difference in diameter caused by wear or adhesion on the surface, may cause the belt to deviate towards the side with the larger diameter.

4. Adjusting the tension

In addition to being perpendicular to the length direction of the belt, the direction changing drum at the tensioning point should also ensure that its axis centerline is horizontal. When using a hydraulic cylinder for tensioning, the bearing seat of the tensioning drum should be translated simultaneously to ensure that the axis of the drum is perpendicular to the longitudinal direction of the belt. When the belt conveyor is running, if the belt tension is not enough, the belt will not deviate when it is empty or with a small amount of load. When the load is slightly larger, there will be deviation. It is necessary to choose a suitable tensioning device to ensure that the belt has sufficient tension.

5. Rectify the position of material at the transfer point

The blanking position of the material at the transfer point has a greater impact on the belt deviation, especially when the two belt conveyors are projected vertically on the horizontal plane. Generally, the Elevation of the upper and lower belt conveyors at the transfer point should be considered. The lower the Elevation is, the greater the horizontal velocity component of the material is, and the greater the side impact on the lower belt is. At the same time, the material is difficult to center, which makes the material on the belt deflect, leading to belt deviation. Therefore, a material baffle can be added to block the material, changing the direction and position of the material's falling.
The above are the main reasons and corresponding solutions for the deviation of the belt conveyor belt. Sometimes, the reasons for belt conveyor belt deviation are quite complex, and using one method alone may not achieve ideal results, and multiple adjustment methods may need to be adopted. It is recommended that the beneficiation plant purchase belt conveyors from professional belt conveyor manufacturers. While obtaining high-quality belt conveyors to ensure normal production of the beneficiation plant, it also provides sufficient technical support for subsequent equipment problems.