Tension spring rotating shaft with oil injection hole

By setting axial and radial oil injection channels on the tension spring shaft of the cableway door opening and closing mechanism, the problem of poor shaft lubrication was solved, extending the equipment life and improving safety and operating efficiency.

CN224364237UActive Publication Date: 2026-06-16SHANDONG TAISHAN CABLEWAY IND DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG TAISHAN CABLEWAY IND DEVELOPMENT CO LTD
Filing Date
2025-09-05
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The cableway door opening and closing mechanism experiences increased damping during high-load operation, which shortens the equipment's service life and poses safety hazards. Furthermore, the shaft lubrication system lacks an effective grease filling port, affecting the equipment's operational stability and safety.

Method used

A tension spring shaft with axial and radial oil injection channels is designed. Oil injection channels are formed on the shaft body by axial and radial drilling fixtures. The oil injection fixtures are used to achieve precise injection of grease. The grease is delivered through the rotating connection between the bushing and the shaft to ensure lubrication.

Benefits of technology

It enables effective replacement of grease and sealing of bushing clearance, extends component service life, improves equipment operation stability and user experience, and simplifies the lubrication process.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224364237U_ABST
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Abstract

The utility model relates to a pull spring rotating shaft with oil injection hole, including rotating shaft body, axial oil injection channel, radial oil injection channel, shaft sleeve and lubricating cavity. Rotating shaft body is composed of shaft body and threaded connector, axial oil injection channel passes threaded connector to the midpoint in the shaft body, radial oil injection channel connects axial channel and lubricating cavity, and solid lubricating grease enters lubricating cavity through these channels, and plays the lubricating effect. In order to guarantee the punching precision, axial and radial punching frock have been designed, the inner thread of its connector is matched with threaded connector, and the punching channel corresponds the midpoint of axial and radial respectively, and the channel top is equipped with the circular truncated cone transition end, and the drill bit is convenient to enter. The utility model has the advantages of simple structure, convenient oil injection, good lubricating effect and can effectively prolong the service life of rotating shaft.
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