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Detailed introduction of logistics roller conveyor

by:YiFan Conveyor     2021-07-15
The driving device of the logistics roller conveyor is composed of a frequency converter, a motor, a coupling, a reducer, and a driving roller. When the frequency converter drives the motor to rotate, the torque is transmitted to the roller through the coupling. The rotation of the drive roller will generate friction with the conveyor belt, drive the conveyor belt to rotate, and finally transport the carried materials out. The logistics roller conveyor uses conveyor belts and friction to transport materials from the initial feeding point to the destination. It is an indispensable conveying equipment in the enterprise. It can not only convey bulk materials, but also carry in pieces of goods. transport. The tensioning device of the logistics conveying equipment is an important part of the conveyor belt. The tension of the conveyor belt is obtained by the friction between the driving roller and the conveyor belt. Therefore, a certain tension of the conveyor belt must be maintained when the belt is running. The device that maintains the tension of the belt is the tensioner. And it is directly related to the operational safety and service life of logistics conveyors, especially for large-volume, long-distance logistics conveyors. The tension of the traditional fixed tensioning device cannot change with the change of the load. It can only rely on the experience of the workers to tighten it regularly. Due to the change of the load, the tension of the belt often does not match, and the conveyor belt will have impact dynamic load. Phenomenon, so the fixed winch tensioning device seriously affects the safety performance of the conveyor belt. Long-distance, high-power logistics conveyors are more dynamic, and the tension fluctuations are particularly large. Therefore, the tension must be dynamically adjusted according to the different operating conditions. A relatively large tension is required during the start-up phase to increase the difference between the conveyor belt and the roller. The frictional force between them can pull the conveyor belt to rotate; the tension required for normal operation of the logistics conveyor at the constant velocity stage is relatively small, and under the condition of lower tension, the friction loss on the belt material loss is relatively small, so The service life can be prolonged, and the vibration and impact of the loading conveyor belt can be effectively avoided. When the inverter is started. The conveyor belt is a viscoelastic body, and the traction force cannot immediately transmit the speed to the entire conveyor belt. With the action of the viscous force, the traction force is transmitted to the entire conveyor belt. During the start and operation of the conveyor belt, the tension of the conveyor belt is in tension. Start to change under the action of the tightening device, and the change of tension will cause the change of the deformation of the conveyor belt. When the driving device is started under heavy load, the dynamic load of the conveyor belt must be reduced to ensure its stability. The driving device of a large logistics conveyor generally adopts a multi-drive form. When the length of the belt conveyor belt exceeds 3,500 meters, the driving device can be designed at the head or tail of the logistics conveyor to avoid uneven load distribution, or because the wrap angle of the roller and the conveyor belt is different, the output torque of each motor is different. The difference causes the output torque of some motors to be too large and overloaded. The overload will cause a protective shutdown, and frequent shutdowns will affect the production capacity. For long-distance conveyor belts, the traction transmission process is relatively long. The conveyor belt is made of viscous material and the transmission torque has hysteresis. When starting, the driving force at the rear of the loading conveyor is not transmitted in time, and the driving force at the front of the conveyor starts to work, resulting in If the front tension is too high, it may cause the front motor to be overloaded and stop, in the worst case, it may cause the front motor to burn out or the loading conveyor belt is subject to excessive tension to break the conveyor belt. Therefore, the long-distance conveyor belt of the logistics conveyor needs to install multiple driving devices at different positions of the conveyor belt, generally at the head, middle, and tail. Article recommendation: How to replace the belt conveyor when the belt needs to be replaced
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