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Laser microtexturing self-lubricating method for variable-pitch/yaw bearing in wind turbine generator system

A technology for wind turbines and yaw bearings, applied to ball bearings, bearing components, shafts and bearings, etc., can solve problems such as discounting of lubrication effects, achieve the effects of reducing friction and wear, avoiding failure, and reducing initial roughness

Inactive Publication Date: 2018-06-29
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the moving direction of the ball is affected by the texture of the raceway. Along the texture direction, the lubrication condition of the ball is very good, but if it deviates from this direction, its lubrication effect will be greatly reduced, so it is used in pitch / yaw. Very unsuitable for large bearings

Method used

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  • Laser microtexturing self-lubricating method for variable-pitch/yaw bearing in wind turbine generator system
  • Laser microtexturing self-lubricating method for variable-pitch/yaw bearing in wind turbine generator system
  • Laser microtexturing self-lubricating method for variable-pitch/yaw bearing in wind turbine generator system

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] The ideal circular pits are obtained by laser micro-texturing on the surface of the laser-hardened raceway and the surface of the ball. The microscopic circular pits are arranged in a lattice, as shown figure 1 , two adjacent rows of circular pits on the inner and outer rings are staggered at an angle of 45° along the axial direction, and the circular pits on the surface of the ball are staggered at an angle of 45° in the horizontal direction. Lubricating materials are filled into the processed circular pits, the lubrication conditions between the balls and the inner and outer raceways are greatly improved, and the initial roughness between the friction pairs is much lower than that of traditional simple grease lubrication. The wear in the cycle will be reduced a lot, and its life will be greatly improved.

[0037] In this paper, the texture morphology of the c...

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Abstract

The invention relates to a self-lubricating bearing technique, and in particular to a laser microtexturing self-lubricating method for a variable-pitch / yaw bearing in a wind turbine generator system.Laser microtexturing is carried out on the inner raceway surface of an outer ring, the outer raceway surface of an inner ring and the surfaces of balls in the bearing, a die hot-pressing solidification filling method is utilized to fill a solid lubricating material to form a self-lubricating structure, so that the initial roughness between the balls, the inner raceway and the outer raceway in thebearing, and thereby the service life of the wind turbine generator system can be effectively prolonged.

Description

technical field [0001] The invention relates to self-lubricating bearing technology, in particular to a laser micro-modeling self-lubricating method for pitch / yaw bearings in wind turbines. Background technique [0002] In order to ensure the safe and reliable operation of pitch / yaw bearings, minimize friction and wear when the bearings are working, and avoid failure of the internal raceways and steel ball surfaces of the bearings, the bearings must be lubricated. The lubrication of the bearing has the functions of heat dissipation, dust prevention, rust prevention, dust sealing and buffering. For offshore wind turbines, the bearings operate in low-speed, heavy-loaded, humid air containing seawater, and sometimes turn frequently. If the lubrication conditions do not meet the requirements, the bearings will not be evenly distributed due to excessive overturning moments And deformation. The traditional lubrication method is grease lubrication. When the bearing starts to oper...

Claims

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Application Information

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IPC IPC(8): F16C19/16F16C33/58F16C33/32F16C33/66B23P15/00
CPCB23P15/003F16C19/16F16C33/32F16C33/583F16C33/6696
Inventor 杨超君周志明吴立王美冈徐小煜
Owner JIANGSU UNIV
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