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How safe and effective protection and control of the rock crusher

Far from the quarry to the blasting of stone blocks ( mostly limestone ), its size vary greatly , from the rubble until the side length of 2 m even larger stones are blended together . At present , the size of the crusher feed the mouth of 3100x3300 mm . Such a big heart block may drag the motor close to the peak of the torque limit value . To continue feeding may lead to the parking crusher , crushing machine to stop , you must hand stone crusher in the evacuation , in order to re-start , which would enable the crusher to interrupt the running for a long time .To prevent this , by convention , should the operator of the crusher installation of a monitoring ammeter . When the current reaches its maximum , artificially stopping the crusher plate feeder .

Rock crusher protection:

Crusher automatic protection device includes a tachometer generator , the number of revolutions of the crusher to convert the speed indicator . The speed gauge have two limit contacts crusher at low rpm , it means that the motor is in overload conditions , the low speed limit contacts are closed , you can put the plate feeder stopped . In the time of turning off the plate feeder , crusher broken stone .In the time of turning off the plate feeder , crusher broken stone . In this way, the crusher will be back to normal rotation . Rpm rises to the upper limit position , the upper limit of the contact is closed, which would in turn the plate feeder connected . Crusher protection methods can not only manual control, also can be used to limit contact to control . However, this method makes the feeder run often in the oscillation state , this is harmful for drag motor . In this operating state , the lack of material production line belt weigher will also be weighing on unreliable .

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