Forklift steering axle structure

By designing a pin seat, upper end cover, and oil seal in the forklift steering axle, combined with a one-way thrust ball bearing and a U-shaped seal, the problems of grease leakage and insufficient grease filling are solved, achieving sufficient grease addition and sealing, thereby improving the operating efficiency of the needle roller bearing and the service life of the steering axle.

CN224408813UActive Publication Date: 2026-06-26ANQING HELI AXLE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANQING HELI AXLE CO LTD
Filing Date
2025-07-14
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the forklift steering axle structure, poor sealing of the iron-shell oil seal leads to grease leakage. Insufficient grease injection through the kingpin causes damage to the needle roller bearings, reducing the service life of the steering axle.

Method used

The design employs an upper pin seat, upper end cover, and oil seal to form a sealed space. Combined with a one-way thrust ball bearing and a U-shaped seal ring, it prevents grease leakage and blocks grease from spreading to the needle roller bearing through the end of the kingpin, ensuring sufficient grease addition.

Benefits of technology

It improves the sealing performance of grease, prevents leakage, ensures efficient operation of needle roller bearings, extends service life, and enhances the load capacity and overall service life of the steering axle.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224408813U_ABST
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Abstract

The utility model discloses a kind of forklift steering axle structure, including bridge body, upper pin seat and lower pin seat, further include two oil cylinder assembly, upper pin seat and lower pin seat are connected with steering knuckle by kingpin, oil cylinder assembly is connected with steering knuckle by connecting rod, further include upper needle roller bearing, the top of upper pin seat is provided with upper end cover, upper pin seat and steering knuckle between are provided with one-way thrust ball bearing;Further include lower needle roller bearing, the bottom of lower pin seat is provided with lower end cover, the inside of lower pin seat and the inside of upper pin seat are all provided with oil seal.The utility model utilizes in upper pin seat and lower pin seat form a higher sealed space, not only conducive to grease from oil cup mouth to be blocked by kingpin end portion and extend to upper needle roller bearing or lower needle roller bearing, to realize the sufficient addition of grease, simultaneously, also conducive to avoiding the leakage of grease, to guarantee that upper needle roller bearing or lower needle roller bearing is always in efficient operating state, avoid its damage, while, improve its service life.
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