Thread Content
The essential component of a roller conveyor is the roller itself; the rubber-coated rollers used in such conveyors can, through their coating, significantly improve the performance of the conveying system. They protect the metal rollers from wear and also prevent the conveyor belt from slipping, ensuring that the rollers and the belt move in sync and thus enabling the belt to operate efficiently with a high capacity. The rubber coating on the drums of roller conveyors also effectively prevents sliding friction between the drums and the belt, reduces the sticking of materials to the drum surface, and thus lowers the risk of belt deviation and wear. Conveyor belts are highly suitable for use in indoor environments, and they are widely employed in the food industry, especially for transporting semi-finished products as well as finished products of puffed foods. Due to the gaps between the rollers of the roller conveyor, when transporting food materials, larger items can be placed directly on the conveyor, while smaller packaged items require idler rollers for transportation. The roller conveyor’s flat conveying line can adjust its length as needed during the transportation of materials, allowing it to change according to the requirements of material transfer. The ratio by which each individual unit of a roller conveyor composed of units can be extended or reduced is 3 times. Conveyor belts can transport food materials at an inclined angle, horizontally, or vertically; moreover, the direction of transport on such conveyor belts can also be adjusted more flexibly depending on the position of the materials. The maximum inclination angle of a roller conveyor is 180 degrees. The protection of the roller conveyor is also quite simple; each unit consists of eight rollers. Individual units can be used independently or connected in series with other units, and modular design facilitates easy installation and disassembly. The principle behind determining the diameter of rollers in roller conveyors is that when the tensile stress on the belt is high, the additional bending stress should be lower ； Conversely, when the tensile stress is low, a slightly higher bending stress is allowed, allowing for the use of a smaller drum diameter ； When transporting materials, the roller conveyor can also adjust the height of its mechanical legs according to the requirements of the working surface, in order to work in conjunction with other mechanical equipment during production. The thickness of the drum shell in a roller conveyor depends on factors such as the diameter of the drum, the length of the drum body, the tension of the conveyor belt, and the wear that occurs during braking. Calculating the thickness of the cylindrical shell is very difficult, and the values obtained through such calculations are generally on the low side. Considering wear resistance and ease of manufacturing, the thickness of the cylindrical shell is usually set to be relatively large. After determining the thickness of the shell, its strength is checked to ensure it meets the required standards. Since the drum shell of a roller conveyor is subjected to normal and tangential loads, and the magnitude of these loads varies along the circumference of the drum. At present, there is no accurate method for calculating the drums of roller conveyors. Although finite element analysis can yield relatively precise results, the lack of specialized general-purpose programs for calculating conveyor drums means that finite element analysis can only be applied to individual drums. For roller conveyor drums with soft radial plates, the maximum stress generally occurs in the middle of the drum’s length and on the outer side of its thickness; under normal circumstances, the stress in such rollers can be expressed using approximate values with sufficient accuracy.