Self-lubricating combined type planetary gear transmission mechanism and filter

By using a self-lubricating composite planetary gear transmission mechanism, which utilizes the centrifugal force of the rotating shaft to drive automatic lubrication and elastic connecting parts for buffering, the problems of uneven lubrication and noise vibration of planetary gears are solved, achieving efficient and reliable lubrication and noise reduction and vibration damping effects.

CN120991069APending Publication Date: 2025-11-21XIHUA UNIV
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Patent Information

Application Number
CN202511240347.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-02
Publication Date
2025-11-21

AI Technical Summary

Technical Problem

Existing planetary gears require manual lubrication, which makes it difficult to ensure uniform lubrication of all parts, and generates noise and vibration during operation, affecting their service life.

Method used

A self-lubricating composite planetary gear transmission mechanism was designed. Through the synergistic action of the lubrication and control parts, the centrifugal force of the rotating shaft drives the annular compression air bladder and the expansion air bladder to achieve automatic and uniform lubrication. The mechanism also uses elastic connectors and a flexible internal gear ring to buffer external impacts and reduce noise and vibration.

Benefits of technology

It achieves maintenance-free automatic lubrication of planetary gear transmission, reduces equipment wear and maintenance costs, improves operating efficiency and reliability, significantly reduces noise and vibration, and extends equipment service life.

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Abstract

The invention discloses a self-lubricating combined type planetary gear transmission mechanism. The self-lubricating combined type planetary gear transmission mechanism comprises a planet carrier, an eccentric sun gear, a rotating shaft, a planetary gear and a self-lubricating assembly, and the self-lubricating assembly comprises a lubricating part and a control part connected with the rotating shaft; the lubricating part comprises an annular fixing plate, an annular extrusion air bag connected with the inner surface of the annular fixing plate, an annular expansion air bag connected with the outer surface of the annular fixing plate and a lubricating column penetrating through the planet carrier. When the rotating shaft drives the planetary gear to start to work, the control part drives the push plate to move to extrude the annular extrusion air bag, so that air is pressed into the annular expansion air bag and expands, lubricating oil flows out of the oil discharge hole to the meshing part of the planetary gear and the eccentric sun gear, and comprehensive lubrication is achieved. The whole lubricating process is automatically started along with rotation of the rotating shaft, manual inspection or manual lubrication is not needed, it is guaranteed that all parts are fully lubricated, and use is extremely convenient.
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