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When crusher works activate roller with materials into the crushing chamber and reciprocating vibration, and v-belts will sometimes tensioner sometimes relaxation, belts tensioning devise may guarantee v-belts is always in the tensioner state; in addition crusher works after a period of time and v-belts will become relaxation, at this time by rotating the nut on the tensioning devise can adjust the height of the roller fulcrum, thereby can make the v-belts tensioning again.

Crushing roller is composed of two groups inclined wedge through the keys with spindle lock into a whole, through two bearing spindle fixed in the frame. The roller divided into the fixed roller and movable roller, the fixed roll shaft bolted on the rigidity frame, the movable roll shaft is installed in the slide, rear spring loaded, can assure the roller when working with sufficient crushing force. Belt tensioning devise consists of roller, bracket, and lever and spring component. The drive current of each roller is set with a limit, when encountering extreme hard or large materials, the roller will reverse automatically when the current overloads to protect the roller shell from getting damaged. The reverse operation is as follows:

1. Under normal conditions, the roller stops with its paired roller on the outside, performing the following actions in the middle of them. As the professional manufacturer of complete sets of mining machinery.Henan Hongxing is always doing the best in products and service.

2. The action roller stops for t1 then reverses for t2 to get stopped.

3. For another t1, this pair of rollers re-starts and rotates in normal working status.

4. It will send out an alarming signal when the times of the reverse operation surpass n in t3.

The above procedures are controlled automatically via the program. When it alarms, the maintenance staff should find the problems through the manhole and the observation hole. Then the roll crusher can be re-started after the troubleshooting is completed. Below the impact, normally by crushing the material degree of fragmentation along its most vulnerable, such selective fragmentation strategy, the particles with a higher probability of a cube shape, so the teeth roll crusher solution content material as low as a percentage flakiness 10%, even though the jaw, cone and roll crusher solutions for instance the percentage flakiness is going to be greater than 15% of your content. Thus, particles inside the cube exactly where needed. As an example, high grade anti skid road surface, ordinarily toothed roll crusher to break as the finish device, developed concrete aggregate.