A door frame system with good stability and a three-way vehicle

By designing an adjustable limit roller system, the problem of shaking caused by precision errors in mast systems with fixed limit roller positions was solved, thereby improving the stability of the inner, outer, and middle masts and enhancing the stability of the fork assembly.

CN224548003UActive Publication Date: 2026-07-24NINGBO RUYI JOINT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO RUYI JOINT CO LTD
Filing Date
2025-08-27
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing technology, the gantry system with fixed limit roller positions is prone to shaking due to precision errors during the production process, resulting in poor stability and an inability to effectively limit gantry offset.

Method used

The design includes an adjustable limit roller system, comprising first, second, and third limit rollers. The rollers are adjusted to fit the gantry via an eccentric sleeve, ensuring the stability of the inner, outer, and middle gantry.

Benefits of technology

It improves the stability of the inner, outer, and middle masts, prevents swaying, ensures the stability of the fork assembly and the levelness of the goods, and enhances the overall stability of the mast system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical fields of fork truck portal, and specifically discloses a portal system with good stability and a three-way vehicle, the portal system comprises a portal assembly, a fork assembly and a limiting assembly, the portal assembly comprises an outer portal, a middle portal and an inner portal, the middle portal is arranged on the inner side of the outer portal in a liftable mode, the inner portal is arranged on the inner side of the middle portal in a liftable mode, the limiting assembly comprises a first limiting roller arranged on the top of the middle portal and a second limiting roller arranged on the bottom of the inner portal, the spacing between the first limiting roller and the inner portal is adjustable to keep the first limiting roller in contact with the outer side of the inner portal, and the spacing between the second limiting roller and the middle portal is adjustable to keep the second limiting roller in contact with the inner side of the middle portal, the upper and lower ends of the inner portal are respectively limited by the first limiting roller and the second limiting roller, and when the fork is offset and presses the inner portal, the inner portal can be kept in a vertical state and the stability of the inner portal can be ensured.
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