Custom Hoist Head Sheave And Guide Wheel Castings And Forgings For Mining
1. Product structure of crown wheel and guide wheel, castings and forgings
There are basically two kinds of roof wheel & guide wheel structure: one is the spoke structure, the other is the welding structure. The former is the old structure, the overall rigidity is poor, spokes are easy to break in use. Rope groove liner is hardwood material, easy to wear, frequent replacement, and noise in operation. The inner diameter of the swimming wheel is inset with bearing bush, and the rotating mating surface is lubricated by grease in the oil cup. After a certain period of use, the grease will deteriorate and dry up, and the oil passage will be blocked, which is not conducive to lubrication again. The bearing bush is made of cast iron, which is easy to wear and fracture, and the maintenance workload is large.
The welded type is improved in structure to improve the overall strength, wear-resistant engineering plastics are used for the lining of the rope groove to prolong the service life, high-quality brass materials are used for the bearing bush, thin oil is used for lubrication, and the oil cup is moved to the outer circular side of the swimming wheel to facilitate the daily oil filling operation.
2. Product parameters of sheet-wheel and guide wheel, castings and forgings
| Product name | Mine use head sheave |
| Material | 45#,Q235B,Q235A,Q345A,Q345B,alloy steel,carbon steel,etc |
| Heat treatment | Normalizing,annealing,aging,hardening and tempering |
| Process | Blanking,bending,spicing,welding, abrasive blasting(shot blasting),milling,drilling,tapping,test |
| Main equipment | 1.6m,5m CNC Vertical Lathe; 8m,6m,5m Horizontal Lathe; milling machine; 6m,4m,3m,2m, CNC boring&milling machine; 2 sets CNC Lathes,2sets CNC Machining center VMC 850L;80mm,50mm drilling machine; Plasma cutting machine; CNC cutting machine; Bending machine; Rolling machine;plate shearing machine; submerged arc welding; gas shielded welding; argon arc welding; large spray room etc. |
| Max. diameter | 5000mm |
| Max.length | 8000mm |
| Inspection | Dimension inspection, external environment test, visual inspection, incoming inspection, finished product inspection, flaw detection |
| Max. weight | 10T |
3. Common faults and techniques of Head sheaves and guide wheels castings and forgings
(1) For the burning tile problem of old structure Head head sheave sliding bearing, the lubrication mode should be improved; Because the crown wheel is installed on the derrick, it is inconvenient for daily maintenance, temperature alarm signal device should be added to timely maintain and prevent burning tile accident, or replace the original sliding bearing with rolling bearing structure.
(2) For the old structure of the pulley without padding in the rope groove, no padding can be added on the original rope groove, so it is necessary to replace the pulley with padding, and the adjacent assembly size can be kept unchanged to facilitate installation;
(3) For the mines with difficult transportation in mountainous areas or underground roadways, the crown wheel (guide wheel) can be replaced with a two-half structure or four-half structure.
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