High Efficiency Chain Tensioner for Coal Mine Conveyor

chain coal conveyor mine Tensioner

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The chain fastener of the scraper or the chain fastener of the transfer machine is divided into manual chain fastener and hydraulic chain fastener. By applying certain pre-tightening force to the chain of the scraper, the scraper conveyor can operate safely. When tightening the chain, fix one end of the chain scraper on the side plate of the nose frame or chain chute, and bypass the other end of the chain wheel of the head to make the chain wheel reverse, and then the chain scraper is strained. When the chain tension of the chain scraper is appropriate, the chain scraper will brake to prevent the chain of the chain scraper back loose. After the two chain heads are connected, the chain scraper will remove the brake.

The operation process of the hydraulic chain fastener

Before tightening the chain, first fix the scraper chain with the chain stopper, press down the rotary frame, make the motor chain tightening device into the correct meshing state, and check whether the meshing gap between the idler wheel and the big gear is correct. And then to the hydraulic control valves for the liquid, hydraulic control valve handle to the corresponding position, hydraulic motor rotation, low speed scraper chain inversion, with the scraper chain tension, hydraulic motor speed becomes slow, pay attention to the observation of the scraper chain tension, until appropriate drag scraper chain relaxation degree, in the hydraulic control valve handle will move to a braking, motor stalling, at this time can safely increase or decrease in link, adjust the scraper chain length.

After the completion of the chain connection, pull the handle of the hydraulic control valve to the opposite position of the operation of the tight chain to make the motor run the zipper forward. When the upper chain fixed by the chain stopper becomes loose, operate the handle of the hydraulic control valve to the middle position, stop the supply of liquid to the hydraulic control valve, and the motor stops running. Remove the chain stopper and operate the hydraulic control valve to equalize tension. Then disengage the chain system to disengage the idler and the large gear.

Precautions in the use of hydraulic chain fastener

Before the hydraulic chain fastener starts to work, the working face staff should be informed. During the process of fastening the chain, the staff should not stand in the dangerous position such as scraper, nose and tail. Check the hydraulic control valve and limit switch in the switch box to see if their functions are complete. In the working process of the hydraulic chain fastener, pay attention to observe the chain, the chain tension progress is appropriate.

In the actual process of chain tightening, we should operate the hydraulic chain tightening device according to the process of chain tightening, pay attention to matters needing attention, and ensure safe production. Want to know more about scraper conveyor parts, scraper transfer machine parts, hydraulic support parts, please continue to pay attention.