Thread Content
Idler rollers are important components in belt conveyors, used to support the conveyor belt; they are also a vital part of conveyor equipment. Due to the long distances covered by the conveyor belts, idler rollers are actually used in groups. This arrangement takes into account the distance between each idler roller. A well-designed set of idler rollers not only helps to reduce costs but also ensures the reliable operation of the belt conveyor, while simultaneously extending the service life of the conveyor belt. The prerequisite for conveyor components is to have a clear understanding of their technical parameters. Conveyor belts have a large number of idler roller sets, which not only requires significant investment but also means that as the number of idlers increases, the operating resistance of the conveyor belt rises, thereby necessitating larger specifications for the conveyor belt and greater capacity for the motors. Setting an appropriate distance between the idlers of a belt conveyor helps ensure its smooth operation. In belt conveyors used for transporting bulk materials, the distance between the supporting idlers in the carrying section is approximately 0.8 to 1.5 meters, while the idler spacing in the return section is 2 to 3 meters; this is the case for the entire carrying section of the belt conveyor, except in some special areas. For a given belt conveyor, the maximum allowable spacing between idlers varies in different areas due to differences in tension and load; moreover, an equal-spacing arrangement of idlers does not take into account the specific conditions in various parts of the conveyor. Therefore, using different idler spacing on the same belt conveyor is more in line with the actual conditions of such conveyors. Moreover, this design with varying spacings allows for a reduction in the number of idlers required throughout the conveyor, thereby lowering its operating costs. The design of unequal spacing for idlers involves increasing the distance between them, provided that this does not affect the performance of the belt conveyor. Therefore, when increasing the spacing between the idlers of the belt conveyor, it is necessary to ensure that these idlers can still guide the conveyor belt; deviation of the belt is not allowed. The groove angle of the conveyor belt must remain unchanged, and material leakage is not permitted. Increasing the spacing between the idler rollers of a belt conveyor will increase the load on each set of idler rollers. To ensure reliable operation, it is necessary to guarantee that the idler roller sets of the belt conveyor can withstand the corresponding load. When redesigning the technology of manufacturing plants, consideration is given to a hierarchical arrangement of the spacing between idlers in long-distance belt conveyors. This approach allows for a reduction in the number of idler sets and associated equipment costs, while still ensuring the proper operation of the belt conveyor, thereby lowering energy consumption. Considering the process and design aspects, the spacing between idler groups can be such that the belt conveyor is divided into sections of 30 to 50 meters each; calculations show that the grading mainly occurs in the low-tension area.