Coal crusher common vibrating problems with reason and handling methods

Unbalance of rotor. Because coal crusher roller hammer is worn with fracture and stick to coal seriously, leading the unbalance of rotor. The roller hammer should be replaced and changed to a new one.

Coal crusher fountain bolt is loose or ball mill basement is lack of intensity. Check and fasten the fountain bolt for coal crusher basement.

Coal crusher inner part is loose. Check whether the sieve plate rack, sieve plate, impact board and lining plate are loose. Fasten all bolts.

The basement of coal crusher is sinking down and the loose shaking of cement bed with damage. Check, adjust and grout for coal crusher basement for second time to ensure a stable basement. Advice for newly build power plant coal crusher install vibrating damper, which can decrease the vibrating of supporting basement for coal crusher.

Broken of retaining washer in jam nut of bearing, which can make vibrating for loose of nut. Change a new retaining washer of jam nut and adjust jam nut to accordance with bearing clearance.

Non-uniform material feeding of coal or material feeding inlet hole sticks too much coal, leading to a situation that the coal cannot distribute along the rotor uniformly with vibrating of unsteady strength. Mobile coal crushing plant can ensure the coal feeding uniformly as well as cleaning the sticky coal instantly, which can make the feeding coal distribute on the rotor uniformly.