Low-speed heavy-load reducing diameter sliding bearing for wind power equipment and design method

By designing a stepped diameter reduction sliding bearing structure and optimizing the dynamic pressure lubrication theory, the problem of oil film pressure concentration caused by tilting of sliding bearings in wind power equipment was solved, realizing low-cost and high-efficiency bearing design and processing, and improving the operational reliability and service life of wind power equipment.

CN122236737APending Publication Date: 2026-06-19LUOYANG LYC BEARING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LUOYANG LYC BEARING
Filing Date
2026-05-25
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing technologies for sliding bearings in wind power equipment suffer from concentrated oil film pressure due to bearing tilt, leading to increased frictional power consumption, accelerated wear, and shortened lifespan. Furthermore, the high precision and cost of machining make them unsuitable for mass production needs.

⚗Method used

A stepped diameter reduction sliding bearing structure with and without coating is adopted. By designing the middle coated area and the uncoated areas at both ends, a stepped diameter reduction is formed. The oil film distribution is optimized by using the hydrodynamic lubrication theory, and the optimal parameters are determined by numerical calculation to achieve oil film thickness compensation and low friction when the bearing is tilted.

🎯Benefits of technology

Significantly reduces maximum oil film pressure, improves bearing anti-tilt performance, reduces processing costs, enhances reliability throughout the entire life cycle, and adapts to the needs of wind turbine gearboxes with different power and loads.

✦ Generated by Eureka AI based on patent content.

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Abstract

A low-speed, heavy-load reduced-diameter sliding bearing for wind power equipment and its design method belong to the field of new energy equipment technology. This invention utilizes a diameter difference created by the presence and absence of coating to achieve stepped diameter reduction at the bearing end, replacing traditional continuous shaping. When the bearing tilts under bending moment, a larger oil film clearance automatically forms in the reduced-diameter area at the end, preventing oil film compression and overload. Simultaneously, the intermediate coated area ensures low friction and low wear during start-up and shutdown. This design is easier to implement in manufacturing, improving processing efficiency and reducing costs. The invention combines machinability with beneficial performance characteristics, offering broad engineering application potential.
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