Suspender threading device based on tied-arch bridge

By designing a cable threading device in a steel-concrete tied arch bridge, and utilizing the flexibility of the cables and multiple adjustment mechanisms to adjust the cable bow shape, the problem of difficult cable threading was solved, achieving efficient and low-cost cable replacement.

CN224468241UActive Publication Date: 2026-07-07ROAD & BRIDGE INT CO LTD +2
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ROAD & BRIDGE INT CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In steel-concrete tied arch bridges, the inconsistent lengths of the suspenders and the limited operating space make it difficult to thread the suspenders, and conventional methods may damage the cable structure.

Method used

Design a cable threading device based on a tied arch bridge. Utilize the flexibility of the cable and multiple adjustment mechanisms (tensioning hand chain hoist, upper suspension point hand chain hoist, horizontal hand chain hoist) to adjust the cable bow shape. Through the cooperation of multiple mechanisms, the upper anchor head of the cable is made to pass vertically through the cable threading hole from bottom to top.

Benefits of technology

No large equipment is required; workers can efficiently replace the suspenders on the bridge deck, avoiding damage to the suspenders. The construction is simple and cost-effective.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224468241U_ABST
    Figure CN224468241U_ABST
Patent Text Reader

Abstract

This utility model provides a cable-passing device for a tied-arch bridge, including an arch bridge tie rod, a bridge deck, an upper chord of the arch rib, and a lower chord of the arch rib. The arch bridge tie rod is horizontally positioned at the bottom, and the bridge deck is fixedly positioned on the upper part of the arch bridge tie rod. The upper and lower chords of the arch rib are parallel to each other and obliquely positioned on the bridge deck, with the upper and lower chords arranged vertically. It also includes an arch rib web member fixedly connected between the upper and lower chords, with a cable-passing channel extending through the upper, lower, and web members. The device further includes a cable body, a first adjustment mechanism, a second adjustment mechanism, and a third adjustment mechanism. By utilizing the flexibility of the cable body itself to bend it into an arc shape, and through continuous fine-tuning between multiple mechanisms, the position of the upper anchor head of the cable and the lower end of the cable-passing channel is adjusted to ensure that the upper anchor head of the cable passes vertically through the cable-passing channel from bottom to top, ultimately allowing the upper anchor head of the cable to pass through the upper end of the cable-passing channel.
Need to check novelty before this filing date? Find Prior Art