Belt conveyors are mainly used in metallurgy, coal, chemical, hydropower and other departments. The belt conveyor has different requirements on the pulling force of the conveyor in different stages of movement. For example, when starting, in order to extend the service life of the conveyor belt, a tension protection device (or automatic tension adjustment device) must be installed. The weight hammer adjustment device has a simple structure, but its adjustment range is limited. At present, the ideal method is to use electrical appliances to automatically control the conveyor belt to relax and tighten, two types of tension protection devices commonly used.
1.Reed pipe type automatic tension adjusting device
The working principle of the reed switch type automatic tension adjusting device is to convert the pulling force of the conveyor belt to the on and off of the contacts of the reed switch, so as to realize the forward rotation or reverse rotation of the tensioning motor, so that the conveyor belt is tightened or relaxed. Its electrical wiring is simple and easy to maintain.
2.Automatic adjustment device of resistance strain type tension
The resistance strain type automatic tension adjusting device uses a resistance strain gauge as a tension sensor. It is composed of a tension sensor, a constant current source, a voltage amplifier, a tension indicator, a comparator and an actuator.
The electric circuit of the reed switch automatic tension adjusting device is simple and practical, convenient to install and maintain, and can be adjusted automatically or manually. The resistance strain type tension sensor is more complicated, and its advantage is that it can be adjusted by comparing the actual tension with the preset conveyor belt tension, and it can also be digitally displayed for more detailed adjustment.
Zhengzhou Stone is specialized in producing all kinds of mine-specific equipment such as conveyors, feeders, and crushers . Customers are welcome to visit and purchase. Phone: 13838159488 0371-60630097 Contact: Manager Jin