The deviation of the belt is the most common fault during its operation. To effectively solve such problems, it is necessary to improve the accuracy of the installation and strengthen the daily repair and maintenance work.
1. Install the self-aligning roller set correctly
When installing the self-aligning roller set, many methods can be adopted, such as four-link type, vertical roller type, and intermediate shaft type. The principle is to block or generate lateral thrust by blocking or roller rotation in the horizontal plane. The belt is automatically centripetal to achieve the purpose of adjusting the belt deviation, and its force is the same as the deflection force of the supporting roller group.
The adjustment method of the tail roller is just the opposite of that of the head roller. The specific method is which side of the belt is biased, which side of the roller set moves forward in the direction of belt advancement, or the other side moves backward.
Under normal circumstances, this method is more suitable for belt conveyors with two-way operating conditions or when the total length of the belt conveyor is short. This is mainly due to the shorter belt conveyor compared with the longer belt conveyor. The machine is more prone to deviation and difficult to adjust, and if a longer belt conveyor adopts this method, it will affect the life of the belt.
2. Adjust the tension of the belt conveyor
Another effective solution to avoid belt deviation is to effectively adjust the tension of the belt conveyor. There are two reversing rollers at the upper end of the weight tension position. These two reversing rollers must not only be in contact with the belt The length direction is vertical and at the same time horizontal to the centerline of its axis.
Also, if hydraulic cylinder tensioning or spiral tensioning is used, the two bearing seats of the tensioning roller must be in a state of synchronous and equal translation, to always ensure that the longitudinal direction of the belt is perpendicular to the axis of the roller. status.
3. Pay attention to the working direction and deviation trend of the belt
For a two-way belt conveyor, once the problem of deviation occurs, it is more difficult to deal with the problem of deviation than a one-way belt conveyor.
In the process of adjusting it, you should adjust one direction first and then adjust another direction. In specific operations, you should carefully observe the relationship between the belt’s working direction and the deviation trend, and then adjust it one by one.
The key step of the adjustment should be the adjustment of the reversing roller and the driving roller, followed by the adjustment of the material drop point and the supporting roller.
Besides, at the position of the vulcanized joint of the belt, it should always be ensured that the force in the length direction of the belt section is uniform. If the selected traction method is the chain hoist, the force on both sides should always be the same.
4. Effectively adjust the position of the reversing roller and the driving roller
This step is also a very important link for effectively preventing belt deviation. In a belt conveyor equipment, there are several rollers, and the installation position of each roller and the center position of the movement direction of the belt conveyor length should be in a vertical state, if not in a vertical state And when the deflection is large, there will be deviations.
Similar to the method of adjusting the roller set, for the roller at the head position, if the direction of deviation is to the left, then the bearing seat on the left should move forward, or the bearing seat on the right should move backward. Move; if the direction of deviation is to the right, then the bearing housing on the right should move forward, or the bearing housing on the left should move backward. As for the tail roller, the adjustment method is opposite to that of the head roller.
5. Adjust the position of the supporting roller group
When the belt of the belt conveyor has a problem of deviation in the middle of the entire equipment, a very effective way to deal with the problem of deviation is to adjust the position of the supporting roller group. To facilitate the corresponding adjustment work, during the manufacturing process, the mounting holes on both sides of the roller set should be processed to produce a long hole shape.
The specific adjustment method is as follows: When the deflection direction of the belt is determined to which side, the side of the idler set should move forward toward the forward direction of the belt, or it can be the other side of the idler set. Move sideways back. Since the adjustment of deviation can only know the effect of adjustment after a period of running time, to determine whether the adjusted operating state meets the requirements, so pay attention to the amount of movement of each adjustment.
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