Reducer bearing chamber wear repair process analysis

Reducer bearing chamber 2019 - wear repair process analysis 04 - 17 a reducer reducer is a kind of transmission, is generally used in low speed high torque transmission device, the principle is the electric motor, internal combustion engine, motor, or other high-speed operation of the power, through the input shaft of the reducer on less number of teeth on the gear engagement output shaft of the wheel, so as to achieve the aim of slowing down; Is the ratio of the size of the number of teeth on the gears, gear ratio. Reducer is a kind of the closed in rigid casing of gear transmission, worm drive and gear - Worm drive composed of independent components, commonly used as the machine moving parts and work between the reduction gear. Between the prime mover and work machine or actuator has a function in matching speed and transfer torque is widely applied in modern machinery. In almost all kinds of mechanical transmission system can be seen. Its application work from large power transmission, to the small load, the Angle of the accurate transmission can meet the application of speed reducer, and in industrial applications, deceleration machine has to slow down and increase torque function. Therefore widely used in the speed and torque conversion equipment. Two common problems often reducer reducer bearing and the bearing chamber, the overload, overlap of high speed high torque at low speed under the start, and under the action of vibration equipment, radial impact, bearing chamber or bearing a metal fatigue, produce permanent deformation; Bearing or bearing outer ring and inner ring on the shaft bearing chamber clearance fit, resulting in relative motion develop blemishes. Once appear this issue, seriously affecting the normal production of the equipment. Because of the bad reducer running environment, often wear, leakage and other problems, the main several is: 1, reducer bearing wear, bearing box, including shell, the casing hole wear of bearing housing, gearbox bearing chamber; 2, gear reducer shaft diameter of axle wear, the worn parts in main shaft head, slotting, etc; 3, reducer shaft bearing wear; 4, reducer joint leakage. Three speed reducer bearing chamber wear repair methods ( 1) Repair welding machine: the repair process of equipment needs a lot of disassembly, transport, and choose the right boring boring machine, the high cost of repair, cycle is long. And reducer housing cast iron material is qualitative, the welding manufacturability is poor, prone to cracking after repair welding. （ 2) Brush plating to repair: the process for brush plating thickness is strictly limited, if too thick brush plating, will be easy to fall off, and the process of equipment also need a large number of disassembly, transport, and choose appropriate processing equipment, high cost and long cycle. （ 3) F the blue technology: the implementation of repair, you just need to remove the bearing, short repair cycle, only 6 hours to repair, after repair guarantee 100% of mating surface, and the repair cost is far lower than the traditional repair process, use effect is superior to the traditional repair process. According to the wear problem, the traditional solution is machined repair after repair welding or brush plating, but both has certain disadvantages: repair welding high temperature thermal stress can not completely eliminate, easy cause material damage, lead to bend or break parts And brush plating coating thickness restrictions, easy to peel, and two methods above are with metal repair metal, cannot change 'hard in hard cooperate relationship, under the force combination, still can cause wear again. On some of the biggest bearing enterprises but also cannot solve the scene, many rely on repair. F the blue technology products, in view of the different equipment, different running condition, different wear conditions, adopt corresponding repair process, can be fast, simple and effective to repair, especially due to the high polymer material rolled back, always keep 100% of the contact area, avoids the production of fit clearance, make after repair of equipment life even more than new equipment, fundamentally solve the axial wear reason, help enterprises to improve equipment management level, reduce the maintenance cost, to avoid stop production, enhance the competitiveness of enterprises. Four reducer repair case in January 2015, our technical support department personnel in some iron and steel enterprise, to repair room reducer bearing wear. The deceleration machine to use the large-scale reducer rolling mill for the enterprise, use has been eight years, long-term operation and maintenance does not reach the designated position, lead to reducer every bearing chamber appeared different degree of wear and tear, unilateral wear is 0. 1mm- 1 mm, seriously affect the normal production of the enterprise. The enterprise to use f the blue on-site repair technology, takes 6 hours to finish four of the reducer bearing repair work, the repair precision meet the requirements of the application of the reducer. Applications: F the blue)