Crusher bearings, shaft, rotor fault overhaul analysis

Crusher bearings, shaft, rotor troubleshooting 2019 - point analysis 06 - 20 crusher equipment as the main mining equipment, mainly for different sizes of broken stone, crusher equipment mainly include jaw crusher, counterattack crusher, impact crusher, double roll crusher, hammer crusher, cone crusher, etc. Troubleshooting points of the crusher is introduced: crusher three failure: bearing fault troubleshooting and maintenance, the rotation, the rotor iron core troubleshooting. Below we have three key points of troubleshooting for the analysis: a troubleshooting, bearing wear parts rotating shaft through the bearing support, was part of the heaviest load, it is easy to wear and tear parts. 1) in the operation of the fault inspection check; Rolling bearing is short of oil, will hear the sound of the 'bone bone; If heard discontinuous' terrier infarction, may be bearing rims rupture. Bearing inner mixed with sand and other debris or bearing parts had mild wear, create a slight noise. After disassembly check; First examined the crusher bearings rolling body, inner and outer steel ring to see if there is any breakage, rust, scar, etc. , and then hold bearing inner ring with the hand, and makes the bearing straight, another hand push outside rims, if the bearing is good, the outer rims should rotate smoothly, no vibration in rotation and obvious card lag phenomenon, after a halt outside rims no setback. Otherwise the bearing cannot reoccupy. Left hand stuck outside, right hand hold within rims, make an effort to push in all directions, if you feel very loose when driving, is badly worn. (2) to repair rusty spot on the surface of the bearing surface sand paper erasure are available, and then into the gas cleaning; Or bearing have crack, inside and outside the ring rupture or bearing excessive wear, a new bearing should be replaced. Replace new bearing, bearing should choose the same as the original model. Second, the axis of troubleshooting journal wear; Journal wear is not big, can be in shaft neck on a layer of chrome plating, grinding to need size; Wear is large, can be in shaft neck for surfacing welding on to the lathe cutting polishing; If the journal wear too much, also turning 2 - on the journal 3 mm, car a sleeve again, strike set on the neck, and then turning to the required size. (2) shaft bending; If the crusher shaft bending is not big, but by the method of grinding optical axis neck, slip ring repair; If the bending more than 0. 2 mm, can put in the press, the rotating shaft in bend pressure correction, after correction of the surface of the shaft with lathe cutting polishing; If the bending is too large, the new shaft are subject to change. Three, to determine, rotor iron core troubleshooting, rotor are made of insulating silicon steel sheet pile into each other, is the magnetic circuit part of the motor. , the damage and deformation of the rotor iron core mainly due to the following aspects. 1) crusher bearing excessive wear or bad assembly, and rotor rub, make the surface damage of the iron core, and cause a short circuit between silicon steel sheet, motor iron loss increase, make the motor temperature rise too high. Then apply smooth file tools such as deburring, eliminate short silicon steel sheet, clean up after coated with insulating paint, heating and drying. (2) when the demolition of the old winding force is too large, make tooth skew and open outward. The application of needle nose pliers, wooden hammer tools such as finishing, to reset the alveoli, and in bad reset has a gap between silicon steel sheet to join green shell paper, veneer rigid insulation materials, etc. Due to reasons such as the surface corrosion of the iron core (3) because of be affected with damp be affected with damp. At this moment need sandpaper clean, clean up after coated with varnish. (4) around the set to produce high fever burned core slot or teeth. Can use chisel or scraper tools such as deposition thing out clean, coated with insulating paint dry. (5) between the core and base combined with loose, tighten the original positioning screw. If positioning screw failure, can stand on the drill positioning hole and tapping, tighten the set screw.