Speed reducer
By using end-face needle roller bearings in the reducer to reduce the friction and temperature rise of the planetary gears, the problem of excessive temperature caused by excessive friction when the planetary gears rotate is solved, thus extending the service life of the reducer.
CN224214672UActive Publication Date: 2026-05-08CHONGQING SHANGXUNXI MASCH MFG CO LTD
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Patent Information
- Application Number
- CN202521386790.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-05-08
- Estimated Expiration
- 2035-07-03
AI Technical Summary
Technical Problem
Existing speed reducers have excessive friction when the planetary gears rotate, leading to overheating and shortening their lifespan.
Method used
The end face needle roller bearing replaces the contact between the planetary gear and the inner shell, reducing the contact area and reducing friction and temperature rise by rotating the needle roller bearing in the groove.
Benefits of technology
It effectively reduces the friction and operating temperature of the planetary gears, thus improving the service life of the reducer.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field, in particular to a speed reducer which comprises an integrated gear ring, an input flange, an output shaft, a first inner shell, a second inner shell, a plurality of first transmission units and a plurality of second transmission units. The first inner shell and the second inner shell are each provided with a plurality of first grooves. When the planet wheel rotates, the first inner shell and the second inner shell are replaced by the two end face needle bearings, the two end face needle bearings make contact with the front end and the rear end of the planet wheel, then the contact area of the planet wheel during rotation is reduced, friction force is reduced, and the two end face needle bearings rotate and are matched in the corresponding first grooves. According to the device, through the arrangement of the end face needle bearings, friction of the planet wheels is reduced, the temperature of the device during operation is reduced, and the service life is prolonged.
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