A brake device for a gantry crane

By combining an arc-shaped deceleration rail with a limit switch, the problem of poor braking effect of gantry cranes is solved, achieving smooth deceleration and safe braking, and reducing operational complexity and cost.

CN224450059UActive Publication Date: 2026-07-03CCCC FOURTH HIGHWAY ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CCCC FOURTH HIGHWAY ENG CO LTD
Filing Date
2025-06-25
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing braking devices of gantry cranes have poor braking effect and cannot effectively withstand large impact forces, which can easily cause the crane to overturn. In addition, traditional devices are complicated to operate, costly, and require strict management.

Method used

The system employs a combination of an arc-shaped deceleration track and a limit switch. The arc-shaped deceleration track gradually decelerates as it passes through track sections with different radii of curvature, while the limit switch provides final braking. The support platform ensures stable installation of the track.

Benefits of technology

It achieves a smooth and controllable deceleration process, effectively preventing the crane from tipping over, reducing operational complexity and cost, and improving the applicability and safety of the device.

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Abstract

This utility model relates to the field of gantry crane deceleration technology, and more particularly to a braking device for a gantry crane, comprising: a trolley rail; an arc-shaped deceleration rail, which is smoothly connected to the trolley rail and is composed of several arc-shaped rail segments with different radii of curvature smoothly spliced ​​together; a limiter for preventing the gantry crane from deviating from the arc-shaped deceleration rail, the limiter being disposed at the tail end of the arc-shaped deceleration rail; and a support platform for mounting the arc-shaped deceleration rail, the support platform including an arc-shaped mounting surface for mounting the arc-shaped deceleration rail and a straight mounting surface for mounting the limiter; the curvature of the arc-shaped mounting surface is the same as the curvature of the arc-shaped deceleration rail. This utility model enables the gantry crane to move upward along the arc-shaped deceleration rail, preventing the gantry crane from deviating from the arc-shaped deceleration rail, providing effective braking for the gantry crane, and preventing the risk of overturning due to excessive speed.
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