How to adjust conveyor belt deviation

1. Adjust the load-bearing roller set. When the belt deviates in the middle of the entire belt conveyor, you can adjust the position of the idler set to adjust the deviation; during manufacturing, the mounting holes on both sides of the idler set are processed into long holes to facilitate adjustment. . The specific adjustment method is which side the belt is biased to, which side of the roller group moves forward in the forward direction of the belt, or the other side moves backward. As shown in the figure, if the belt deviates in the upward direction, the lower part of the roller group should move to the left, and the upper part of the roller group should move to the right.

2. Installation of self-aligning roller units. There are many types of self-aligning roller units, such as intermediate shaft type, four-link type, vertical roller type, etc. The principle is to use blocking or the rollers to rotate in the horizontal plane to block or generate lateral thrust. Make the belt automatically centripetal to achieve the purpose of adjusting the belt deviation. Generally, it is more reasonable to use this method when the total length of the belt conveyor is short or when the belt conveyor runs in both directions. The reason is that shorter belt conveyors are more likely to deviate and are not easy to adjust. It is best not to use this method for long belt conveyors, because the use of self-aligning roller sets will have a certain impact on the service life of the belt.

3. Adjust the position of the driving drum and the reversing drum. The adjustment of the driving drum and the reversing drum is an important part of the belt deviation adjustment. Because a belt conveyor has at least 2 to 5 rollers, the installation position of all rollers must be perpendicular to the center line of the length of the belt conveyor. If the deflection is too large, deviation will inevitably occur. The adjustment method is similar to adjusting the roller set. For the head roller, if the belt deviates to the right side of the drum, the bearing seat on the right side should move forward. If the belt deviates to the left side of the drum, the bearing seat on the left side should move forward. The corresponding Move the left bearing seat backward or the right bearing seat backward. The adjustment method of the tail roller is just opposite to that of the head roller. The adjustment method is shown in the figure. After repeated adjustments, the belt is adjusted to the ideal position. It is best to install the drum accurately before adjusting the drive or changing direction.

4. Adjustment of the belt tension point is a very important step in the deviation adjustment of the belt conveyor. The two redirecting rollers on the upper part of the tensioning point of the weight should not only be perpendicular to the length direction of the belt, but also perpendicular to the vertical line of gravity, that is, ensure that the center line of its axis is horizontal. When using spiral tensioning or hydraulic cylinder tensioning, the two bearing seats 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. The specific adjustment method for belt deviation is similar to the adjustment at the drum.

5. The influence of the blanking position at the transfer point on the belt deviation. The blanking position of the material at the transfer point has a great influence on the belt deviation, especially when the projection of the two belt conveyors on the horizontal plane becomes vertical. The relative height of the upper and lower belt conveyors at the transfer point should usually be considered. The lower the relative height, the greater the horizontal velocity component of the material and the greater the lateral impact on the lower belt. At the same time, it is also difficult for the material to be centered. This causes the material on the cross-section of the belt to deflect, eventually causing the belt to deviate. If the material deviates to the right, the belt deviates to the left, and vice versa. During the design process, the relative height of the two belt conveyors should be increased as much as possible. The form and size of upper and lower funnels, guide troughs and other parts of mobile bulk material conveying machinery subject to space constraints should be carefully considered. Generally, the width of the guide trough should be about two-thirds of the width of the belt. In order to reduce or avoid belt deviation, baffles can be added to block the material and change the falling direction and position of the material.

6. Adjustment of the deviation of the two-way running belt conveyor. The adjustment of the deviation of the two-way running belt conveyor is relatively more difficult than the adjustment of the one-way belt conveyor. During the specific adjustment, one direction should be adjusted first, and then the adjustment Another direction. When adjusting, carefully observe the relationship between the belt movement direction and the deviation trend, and make adjustments one by one. The focus should be on the adjustment of the driving roller and the reversing roller, followed by the adjustment of the idler roller and the adjustment of the material's blanking point. At the same time, it should be noted that when the belt is vulcanized at the joint, the force on the belt section length direction should be uniform, and the force on both sides should be as equal as possible when using a guide chain for traction. Adjustment of the deviation of the belt conveyor The adjustment of the deviation of the belt conveyor running in two directions is relatively more difficult than the adjustment of the deviation of the one-way belt conveyor. During the specific adjustment, one direction should be adjusted first, and then the other direction. When adjusting, carefully observe the relationship between the belt movement direction and the deviation trend, and make adjustments one by one. The focus should be on the adjustment of the driving roller and the reversing roller, followed by the adjustment of the idler roller and the adjustment of the material's blanking point. At the same time, it should be noted that when the belt is vulcanized at the joint, the force on the belt section length direction should be uniform, and the force on both sides should be as equal as possible when using a guide chain for traction.（xingaonai）

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