As Belt Misalignment one is lateral movement of drive belts and conveyor belts described. The belt moves unintentionally and can cause operational disruptions. There is a slight misalignment in all systems. Belt misalignment is one of the most common causes of failure of belt conveyors . The belt can fall from the system and be destroyed. The conveyor belt often collides with components on the slack side and grinds them through over a longer period of time.
The causes of belt misalignment overlap and are difficult to determine individually.
The causes include:
- Cross wind
- Rotation of the drive and idler pulleys
- Misalignment of idlers and scaffolding bays
- Off-center bulk material feed
- Trapped bodies
- Caking on support rollers and idler pulleys
If the cause of the belt misalignment cannot be eliminated or found, active or passive countermeasures can be initiated. One of the passive countermeasures is placing idler roller stations on the fall. The outer support rollers are inclined towards the middle of the belt, which leads to a steering effect on the belt if it is off-center. Another possibility is to use edge rollers. However, these limit the belt run and lead to high edge pressures, which can damage the belt. Active countermeasures can be built into the system by installing swivel castors. These twist entire idler stations in order to generate the most effective steering effect possible. However, this can lead to oversteering of the belt, as a result of which the belt oscillates alternately from one side to the other.
In the latest scientific studies, calculation models have been developed that enable the lateral belt run to be predicted and thus make the influence of countermeasures predictable. A finite element model is used that is optimized for use on belt conveyors.
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- G. Pajer, Jiři Pajer, H. Kuhnt, Friedrich Kurth: Stetigförderer . Verlag Technik, 1988, ISBN 978-3-341-00452-4 .
- Flexco - PT Max ™ Belt Trainer. Retrieved April 3, 2017 .
- Hendrik Otto, Andre Katterfeld: Analysis and simulation of belt tracking of conveyor belts . tape 67 . GDMB-Verlag , 2015, p. 53-59 .