Conveyor belt conveyor system is the key equipment, its safe and stable operation of a direct impact on production operations. Belt deviation is the most common belt conveyor failure, timely and accurate handling of its safe and stable operation of the protection. Deviation phenomenon and a lot of reasons, according to different deviation phenomena and reasons to take different adjustment methods, can effectively solve the problem.
It is not difficult to understand the reasons for the conveyor belt deviation, the adjustment method is also clear
The first method is to make long holes in the mounting holes on both sides of the roller set for manufacturing during adjustment. The specific method is which side of the belt bias, which side of the roller group forward belt forward direction, or the other side of the shift. As shown in Figure 2, the belt runs upwards, the lower part of the roller set should move to the left and the upper part of the roller set should move to the right.
The second method is to install self-aligning roller group, self-aligning roller group has many types such as the middle shaft type, four-link type, vertical roller type, the principle is to use the block or roller in the horizontal direction of the rotation block Or produce lateral thrust so that the belt automatically adjusts the belt to the center of the deviation of the purpose of the belt, and its bearing capacity of the load-bearing group of the same deflection force. This method is generally reasonable when the total length of the belt conveyor is short or when the belt conveyor runs bidirectionally, because the shorter belt conveyor is easier to run off and not easy to adjust. The long belt conveyor is best not to use this method, because the use of self-aligning roller group will have a certain impact on the life of the conveyor belt.
Second, the head-driven roller or tail to the axis of the roller and the conveyor centerline is not vertical, resulting in the conveyor belt in the head or rear tail drum redirection. When the roller is skewed, the tightness of the belt on both sides of the roller is inconsistent, and the traction force Fq suffered in the width direction is inconsistent and increases or decreases gradually. As a result, a moving force Fy in decreasing direction is added to the belt , Leading to the loose side of the conveyor belt deviation, the so-called "run loose do not run tight." The adjustment method is: for the head drum conveyor belt to the right of the drum deviation, the right side of the bearing should move forward, the conveyor belt to the left of the drum deviation, the left bearing should be forward Move, corresponding to the left bearing can also be moved backward or right after the bearing. Tail roller adjustment method with the head drum exactly the opposite. After repeated adjustments until the conveyor belt transferred to a more desirable location. It is best to position it correctly before adjusting the drive or changing to the drum.
Third, the conveyor belt itself, such as the use of the conveyor belt for a long time, resulting in aging deformation, edge wear, or damage to the conveyor belt re-made after the joint center is not correct, these will make the conveyor belt on both sides of the tension caused by inconsistent results in running Partial In this case, the length of the conveyor belt will deviate to one side over the whole length, and the maximum deviation will occur at the improper joint. The method of disposal is only reworked on the rubber joints with an incorrect center, and the aging deformation of the conveyor belt is given replacement.
Fourth, the conveyor tensioning device so that the tension of the conveyor belt is not enough, when the conveyor belt is not loaded or a small amount of load does not run deviation, when the load is slightly larger there will be partial phenomenon. Tensioning device is to ensure that the conveyor belt is always an effective device to maintain sufficient tension, tension is not enough, the stability of the conveyor belt is poor, the greater the impact of external interference, will produce severe skidding phenomenon. For belt conveyors that use heavy-weight tensioners, counterweight can be added to solve the problem, but should not be added too much, so as to avoid unnecessarily excessive tension on the belt and reduce the service life of the belt. For belt conveyors that use helical or hydraulic tensioning, the tensioning can be adjusted by adjusting the tensioning stroke. However, there are times when the tensioning stroke is insufficient and the belt is permanently deformed. You can then cut off the belt and re-attach it.
Fifth, the two-way operation Belt conveyor deviation adjustment, two-way belt conveyor belt deviation adjustment than the unidirectional belt conveyor deviation adjustment is relatively difficult, the specific adjustment should be adjusted in one direction, and then adjust the other direction. Adjustment should carefully observe the relationship between the direction of movement of the belt and deviation trends, one by one adjustment. Focus should be placed on the drive roller and the steering roller to adjust, followed by roller adjustment and material blanking point adjustment. At the same time should be noted that the belt in the vulcanized joints should make the belt cross-section length direction of the force evenly on both sides of the force as equal as possible