Helicopter main speed reducer bearing lubricating structure
By setting oil passages and grooves on the support casing and bearing bushings, uniform lubrication of the helicopter main gearbox bearings is achieved, solving the problem of uneven lubrication and extending the bearing life and lubricant service life.
CN224326670UActive Publication Date: 2026-06-05AIR CAPABILITY LAYER EQUIPMENT RESEARCH INSTITUTE
0 Cites 0 Cited by
Patent Information
- Application Number
- CN202521204288.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-05
- Estimated Expiration
- 2035-06-12
AI Technical Summary
Technical Problem
The double-row angular contact bearings in the helicopter main gearbox suffer from uneven lubrication during splash lubrication, leading to increased oil temperature, oil oxidation and deterioration, and shortened oil change intervals.
Method used
An oil passage is provided on the support casing, and first and second grooves are provided on the inner wall of the bearing bushing to form a lubricating oil flow channel, so that the lubricating oil can lubricate the bearing from top to bottom and ensure uniform distribution.
Benefits of technology
It improves lubrication, extends bearing life, slows down oil temperature rise, and extends the oil change interval.
✦ Generated by Eureka AI based on patent content.
Abstract
A helicopter main reducer bearing lubrication structure belongs to the field of aircrafts. The helicopter main speed reducer bearing lubricating structure comprises a supporting casing, a bearing bush installed on the supporting casing and a bearing installed in the bearing bush, the bearing is used for being connected with a main rotor shaft of a helicopter, an oil way is arranged on the supporting casing, and an oil outlet communicated with the oil way is formed in the inner wall of an installation hole, where the bearing bush is installed, of the supporting casing; a first groove communicated with the oil outlet is formed in the inner wall of the bearing bush, a second groove is formed in the lower end face of a flange at the top of the bearing bush and communicated with the first groove, and the top of the second groove is higher than the bearing outer ring, so that a channel for lubricating oil to pass through the bearing outer ring and reach an annular space between the bearing inner ring and the bearing outer ring is formed. Lubricating oil is conveyed to the upper surface of the bearing and lubricates the bearing from top to bottom under the action of gravity, so that the lubricating effect is improved, the problem of non-uniform lubrication is avoided, and the service life of the bearing is prolonged.
Need to check novelty before this filing date? Find Prior Art