The conveyor belt cost of the belt conveyor accounts for 30%-50% of the cost of the whole machine, while the conveying cost of the corrugated sidewall belt conveyor accounts for a larger proportion of the cost of the whole machine.Therefore, it is an important research topic to change the structure of the conveyor belt of the corrugated sidewall belt conveyor and improve its service life.The conveyor belt is generally composed of three parts: the base belt, the corrugated guard and the diaphragm. After years of use, it is found that the conveyor is the most vulnerable to change in the corrugated sidewall belt conveyor.The first is the wavy edge. After repeated stretching and compression in the convex and concave arcs, it is easy to produce fatigue damage and tear at the crest and trough of the wave. If the back-haul branch is not rigid enough, the conveyor cannot operate normally.
The corrugated edge of a conveyor belt.The shape of the wavy side was zigzag at first, and then developed S shape. No matter which type of wavy flange, the convex and concave arcs shall meet the requirements of stretching and compression of the flange。

The product problem of wavy retaining edge. Zigzag and s-shaped troughs are deep and small, so they are easy to accumulate. While W - and WM - shaped troughs have long distances. Therefore, the product is much less than zigzag and s-shaped, which improves the unloading efficiency. For the conveyor belt of the corrugated sidewall belt conveyor, its retainer is supported on the flat supporting roller on the return leg, which requires certain rigidity of the retainer, so as to reduce the droop of the base belt. And avoid interference between diaphragm and roller and damage. In a range of wave distance, W or WM shape has more bending times than S shape, which increases the intermediate ripple, so it is more rigid. Therefore, in the back haul branch, the depression generated by the back haul idler under the action of its gravity is reduced, Thus, the running resistance of the supporting roller and the wear of the conveyor belt are reduced. The service life of conveyor belt is prolonged.
Due to the self-weight of the conveyor belt, friction between the side guard and the back haul branch roller is generated, thus causing the guard to wear out prematurely. In order to reduce wear, Nylon protective cover can be added on both sides of the roller, the width of the protective cover should be larger than the width of the guard. The back haul branch can also be supported by tugboats. The number of tugboats depends on the width and layout. WM type edge guard conveyor belt is adopted. Due to its excellent accessibility, the volume is reduced. Therefore, the transportation and storage space is reduced without affecting the rigidity and stability of the edge.
There are many problems in the use of the currently used s-type edging. This article introduces the edge has many advantages. Therefore, it should be developed and used in practice as soon as possible, so as to make the corrugated sidewall belt conveyor better meet the use requirements.