A kind of universal joint structure for connecting the main shaft of a wind wheel of a wind turbine

CN122107019APending Publication Date: 2026-05-29HANGZHOU NEW CENTURY UNIVERSAL JOINT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU NEW CENTURY UNIVERSAL JOINT
Filing Date
2026-04-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The grease in the universal joint of the wind turbine is quickly depleted under high frequency and high torque conditions. Traditional pressure relief structures cannot replenish it in time, resulting in uneven lubrication and affecting service life.

Method used

A first oil reservoir and a first piston are installed inside the spline sleeve, which is connected to the outside through a pressure relief hole. Combined with an oil adjusting mechanism and a gravity ball adjustment, the automatic replenishment and uniform distribution of lubricating grease are achieved. The oil reservoir and piston adapt to changes in spatial pressure and replenish lubricating grease in a timely manner.

Benefits of technology

It extends the service life of the coupling, reduces the frequency of grease replenishment, ensures that the gear grooves are always fully lubricated, and improves the speed and uniformity of grease replenishment.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122107019A_ABST
    Figure CN122107019A_ABST
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Abstract

The application discloses a universal joint structure for connecting a wind wheel main shaft of a wind driven generator, relates to the application field of the universal telescopic coupling of the wind driven generator, and comprises a spline sleeve assembly, wherein the spline sleeve assembly comprises a spline sleeve pipe, a first oil storage groove is formed in the interior of the spline sleeve pipe, a first piston is movably installed in the interior of the first oil storage groove, a spline shaft assembly is movably installed in the interior of the spline sleeve pipe, the spline shaft assembly comprises a spline shaft body, a second oil storage groove and a plurality of oil discharge holes are formed in the interior of the spline shaft body, and the plurality of oil discharge holes and the second oil storage groove are communicated. The first oil storage groove is arranged in the spline sleeve pipe, more lubricating grease can be stored in the first oil storage groove, the natural loss of the lubricating grease can be coped with, the frequency of the grease supplement maintenance of the coupling is reduced, the first piston changes the internal space volume, the change of the internal and external pressure can be balanced, and the natural loss of the lubricating grease can be coped with.
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