Hammer crusher is one of the most popular machines for fine and medium crushing in sintering tile industry. Small hammer crusher is used for crushing mixed fuel, medium size hammer crusher is used for crushing raw materials. Hammer crusher strikes materials through movable hammer head that hang at the hammer frame which was moved by the rotor at high speed to achieve the aim of crushing. Since the rotation speed of rotor is high, the dynamic balance of hammer crusher is very important. At pile plant, the normal problems are the vibration that caused by the dynamic balance of rotor movement and the materials stick on the hammer head or the sieve gap is blocked for the high water content when process materials, finally resulting in load increasing, even burn the motor. Therefore, should take precautions to prevent the above accident appearing during commissioning and production. Fault diagnosis and the precautions are as follows:
Correct assemble bearing and its accessory
Bearing is the part that supports the rotor spindle and makes it rotating. If the bearing and its accessory are assembled incorrect, the rotor spindle will generate vibration, so as to reduce the service life of bearing. The serious vibration will damage the bearing neck and make it deforming.
Following is to prevent the bearing damage and bearing neck abrasion:
(1) Keep dynamic balance of rotor, to make it not cause eccentric vibration.
(2) When install the bearing, make sure the inside and outside ring should be balance, not tilting. Correctly assemble the axial mounting to avoid bearing shifting.
(3) Align the center line of coupling, place enough rubber gaskets to prevent radial wobble caused by coupling eccentricity.
(4) Add proper lubrication oil and attention to the dirt in the oil.