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Crusher's major failure phenomenon

The motor failure of crusher in the course often affect the production, major failure phenomenon:
A constant, the rotor core troubleshooting
Stator and rotor quartet built by the mutual insulation of the silicon steel sheet is part of the motor's magnetic circuit. Given the damage and deformation of the rotor core is mainly caused by the following reasons
① bearing excessive wear or bad assembly, resulting in fixed, the rotor rub, so that the core surface damage and cause a short circuit, silicon steel plate between the motor iron loss increases, so that the motor temperature is too high. Then application of tools such as fine file to remove the burr, the elimination of silicon steel short, coated with insulating paint to clean up after, and heating and drying.
(2) removal of the old winding, excessive force, Pirates of the slot skew and go out there. The application of needle nose pliers, wood and a hammer and other tools to be trimmed, teeth bad reset, and joined Shell Green Paper, plastic, wood and rigid insulating material between the gap of silicon steel sheet to have a bad reset.
③ due to moisture and other reasons caused by the core surface corrosion. At this point need to use sandpaper to clean, clean up and coated with insulating paint.
④ around the group ground to produce high fever burned core bad tooth. Available chisel or scraper tools such as the deposition removed clean, coated with insulating paint drying.
⑤ core and base, combined with loose, tighten the original set screw. Positioning screw failure can be re-drilled positioning holes and tapping on the base, tighten the set screw. (2) bearing Troubleshooting
Shaft rotation, is the heaviest part of the load bearing support, and easy-to-wear parts.
① Troubleshooting
The operation of inspection;
When the rolling bearing short of oil, will to hear Gulugulu sound; if to hear the sound of the discontinuous Terrier Terrier, possibly bearing steel ring rupture. Bearing mixed with sand and other debris with mild wear or bearing parts, will produce a slight noise.
After the demolition of inspection;
Look at the bearing rollers, inside and outside steel ring is damaged, corroded, scarring, and then hand pinch the bearing inner ring and bearing to settle the other hand, just by pushing the outside circle, if the bearing is good, the outer rims should smooth rotation, and rotation without vibration and obvious catching stall outside the rims there is no backsliding. Otherwise, the bearings can not be reused. Stuck outer left hand, right hand pinch the rim, hard driven in all directions, promote to feel very loose, badly worn.
② fault repair
Bearing outer surface of the rust spots available 00 sandpaper erase, and then into the gasoline cleaning; bearing cracks, fragmentation of the inner and outer rings, bearings or excessive wear should be replaced with new bearings. Bearings replaced with new bearings, you should use the same with the original model.
3 shaft Troubleshooting
① axis bending;
If bent little can be repaired by polishing the journal, the slip ring; bend more than 0.2mm shaft can be put in the press under the pressure correction in the film bend, after correction of the shaft surface with lathe cutting polished; if bent too much, you need to put another one in the shaft.
② journal wear and tear;
Journal wear is not significant in the journal on a layer of chromium plating, and then grinding to the desired size; more wear in the journal on the surfacing, and then lathe cutting polished; journal wear large, the journal also turning 2-3mm, and then the car a sleeve, while it is hot sets in the journal, and then turning to the desired size.


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