Anti-unhooking line flat ladder

CN115548957BActive Publication Date: 2025-12-12STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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Patent Information

Application Number
CN202210967417.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-12
Publication Date
2025-12-12
Estimated Expiration
2042-08-12

AI Technical Summary

Technical Problem

The existing outgoing horizontal ladder hook body cannot be locked, which poses a safety hazard of hook detachment and may lead to the risk of people falling.

Method used

A locking plate is installed at the hook opening of the hook body, and a return spring keeps it closed. Combined with the drive device and sliding rail, the opening and closing of the locking plate is controlled by the drive motor to ensure that the hook opening remains closed without external force.

Benefits of technology

It effectively prevents the hook from coming off, improving safety and ease of use, and is suitable for high-altitude operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a prevent unhooking ladder, which belongs to the technical field of power equipment and comprises a ladder body, a hook body and a locking device. One end of the ladder body is connected to a pole tower. The hook body is arranged at the end of the ladder body away from the pole tower and is used for being hung on a wire. The locking device comprises a locking plate hinged to the hook body and extending to a hook opening. The locking plate is arranged on the inner side of the hook body and is used for closing the hook opening. The inner side of the locking plate is provided with a reset spring, which is connected to the side wall on the side of the hook body away from the hook opening. The prevent unhooking ladder provided by the application is provided with the locking plate at the hook opening of the hook body, so that the locking plate is always in the state of closing the hook opening under the action of no external force. The problem that the hook body of the ladder in the prior art cannot be locked and is easy to be unhooked is overcome. The safety of the hook is improved, the use is convenient, and the prevent unhooking ladder is suitable for high-altitude operation.
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Citation Information

Patent Citations

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    CN203905792U

  • Hook-held automatic fastening grounding wire clamp

    CN210607690U

  • Lifting hook for electric hoist

    CN212712370U