source: http://en.tsxbsy.com/news370572.html release time: 2018-8-20 9:04:00
Do you know what the main points of troubleshooting are for the three breakers of the crusher? Let's take a look at it. Three major faults of
crusher: bearing fault repair, rotor shaft fault repair and fixing, rotor core fault repair. Below we will carry on the analysis to the three major failure overhaul points:
1, bearing failure overhaul wear parts
rotating shaft through the bearing support rotation, is the heaviest part of the load, but also easy to wear parts.
, fault check
running inspection; rolling bearing oil shortage, will hear the "bone and bone" sound; if heard discontinuous "stem" sound, may be bearing ring rupture. Minor noise will be produced when bearings are mixed with sand and other debris or bearing parts with slight wear.
after the removal of inspection; first check the crusher bearing roller, inside and outside steel ring whether there is damage, rust, scar, etc., and then pinch the inner ring of the bearing with the hand, and make the bearing flattened, the other hand force push the outer rigid ring, if the bearing is good, the outer ring should rotate smoothly, rotating without vibration and obvious sticking phenomenon, stop turning The rear outer ring has no regression. Otherwise, the bearing can no longer be used. The left hand holds the outer ring, the right hand holds the inner ring, and pushes it in all directions. If it feels loose when pushing, it is worn out seriously.
2, fault repair: bearing surface rust spots can be erased by sandpaper, and then put into gasoline cleaning; or bearing cracks, cracks in the inner and outer rings or bearing excessive wear, should replace the new bearing. When replacing the new bearing, the bearing should be the same as the original one.
2. Rotary shaft troubleshooting
1, Journal wear; journal wear is small, can be plated a layer of chromium on the journal, and then grinding to the required size; wear more, can be surfacing on the journal, and then to the lathe cutting and polishing; if the journal wear is too large, also on the journal turning 2-3 mm, and then turning a set of barrels, while The heat is sleeved on the axle neck and then turned to the desired size.
2, shaft bending; if the crusher shaft bending is not large, can be repaired by polishing the journal, slip ring method; if the bending is more than 0.2 mm, can be placed under the press, in the beat bending pressure correction, the corrected shaft surface with lathe cutting polishing; if the bending is too large, then need to replace a new shaft. Troubleshooting of stator and rotor iron core
Stator and rotor are made of insulated silicon steel sheets, which are part of the magnetic circuit of the motor. The damage and deformation of stator and rotor core are mainly caused by the following aspects.
. Excessive wear and tear of the crusher bearings or poor assembly, resulting in friction between the stator and rotor, resulting in damage to the surface of the iron core, resulting in short circuit between silicon steel sheets, increased iron loss of the motor, resulting in excessive temperature rise of the motor. At this time, the use of fine files and other tools to remove burrs, eliminate short silicon steel sheet, clean up after coating insulation paint, and heating and drying.
2, when the old winding is removed, the force is too large, so that the alveolus is skewed and outward. At this time, sharp mouth clamps, wood hammers and other tools to be dressed, so that the alveolar reset, and in the silicon steel sheet with a gap between the hard insulation materials such as green paper, bakelite board.
3, because of moisture and other reasons, the iron core surface rust. At this point, sandpaper is needed to be cleaned and painted.
4. Around the ground, high heat is generated to destroy the iron core slot or tooth part. It is possible to remove the deposits with chisel or scraper tools, and use the insulating paint to dry.
5. Loose core and frame can tighten the original positioning screw. If the locating screw fails, the locating hole and the tapping can be re drilled on the machine seat, and the fixing screw can be tightened. Eight hundred and eighty-eight thousand one hundred and eleven