A self-protection descent device

By designing an anti-misinstallation structure and a tilt locking plate in the descender, intelligent identification and automatic locking of the rope installation direction are achieved, solving the braking failure problem caused by reverse rope installation, and improving the safety of the descender and the service life of the rope.

CN224370492UActive Publication Date: 2026-06-19MINGPIN HARDWARE (ZHEJIANG) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MINGPIN HARDWARE (ZHEJIANG) CO LTD
Filing Date
2025-06-05
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The lack of mandatory restrictions on the direction of rope installation in existing descenders means that operators may mistakenly install the rope in the opposite direction due to negligence or in an emergency, causing the braking function to fail and increasing the risk of falls.

Method used

A self-protecting descender was designed. Through the placement area formed by plates one, two, and three and the cam structure, a rope channel system is constructed. An anti-misinstallation structure is adopted, including a hinged rope locking assembly and an inclined locking plate, to realize intelligent identification and automatic locking of the rope installation direction and prevent incorrect installation.

Benefits of technology

It effectively prevents the risk of falling due to reverse installation of ropes, improves operational safety, ensures that the rope always moves along the correct path, reduces friction and twisting, and extends the service life of the rope.

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Abstract

This utility model discloses a self-protective descender, relating to the field of high-altitude operations technology. It includes a descender body with three plates (plate 1, plate 2, and plate 3) on one side, forming a placement area between them. A cam is located in the center of the placement area, forming a channel for rope passage between the cam and the placement area. The channel includes a locking area, a rope release area, and a guide area. The locking area is located between the cam and plate 2, the rope release area is located between plate 1 and the cam, and the guide area is located between the cam and plate 3. Plate 2 has an anti-misinstallation structure. This utility model, by incorporating the anti-misinstallation structure, ensures that the device can only be used when the rope is correctly installed; it cannot be used if the rope direction is incorrect, preventing user error. Its overall performance is significantly superior to existing products, making it particularly suitable for critical safety fields such as firefighting and high-altitude operations, offering enhanced safety.
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Citation Information

Patent Citations

  • Descending device

    CN222804624U