Thread Content
A roller conveyor typically consists of key components such as a drive roller set, idler roller sets, tensioning devices, cleaners, the conveyor belt, guide channels, various protective devices, as well as head frames, tail frames, and intermediate frames. The drive systems for roller conveyors are mainly divided into mechanical drive systems and hydraulic drive systems. Mechanical drive systems are designed to ensure the safety and reliability of the system during operation; therefore, when selecting such systems, considerations are usually based on the conditions under which the system operates under full load and during long-term use. The mechanical drive unit consists of a motor, a speed reducer, a hydraulic coupling and brake, a low-speed shaft coupling, a drive unit frame, guards, a rain cover, etc. Conveyor belts can be used in straight, curved, or inclined conveying line configurations when transporting materials. Based on their conveying capacity, roller conveyors can be divided into heavy-duty belt conveyors such as those made of stainless steel for use in mining, and light-duty stainless steel roller conveyors used in industries such as food processing, light industry, and the chemical and pharmaceutical sectors. Stainless steel roller conveyors are used to transport materials, and their operation is controlled through a control system; however, such systems also have certain requirements. If the motor located next to the roller conveyor is started under heavy load, it requires a current supply that is six to seven times higher than that needed for normal operation. As a result, the motor overheats and gets damaged due to the excessive current and prolonged starting time. Moreover, the high current can cause voltage fluctuations in the power supply, leading to slipping between the rollers and the conveyor belt, as well as conflicts that accelerate the wear of the belt and reduce its lifespan. Therefore, under heavy load on stainless steel roller conveyors, it can generate torque at a low speed in a stable manner without surges, thereby reducing dynamic stress. For large-inclination stainless steel roller conveyors, if the starting acceleration is too high, it will cause the material to slide downward. When used in conjunction with a roller conveyor, there is a loading machine at the front and a unloading machine or transfer belt, etc., at the back; thus, these three machines need to operate in sequence. Either the capacity of the stainless steel roller conveyor is too high; in cases of heavy loads, the motor may overheat and get damaged. Therefore, a speed control device is necessary – it allows the conveyor to operate at high speed to transport materials quickly when there is a large load, and to operate at low speed when there is less material, thereby ensuring full-load operation. During the operation of a stainless steel roller conveyor, it is necessary to monitor various parameters such as obstructions in the path, safety conditions, and the size of the material particles.