A multifunctional bridge deck crane for cable-stayed bridges with a deck surface

By designing a multi-functional bridge deck crane, the complex installation problem of steel box girders in cable-stayed bridges with intermediate cable planes was solved, enabling efficient installation of steel box girders and stay cables without the need for auxiliary truck cranes, thus improving construction efficiency and reducing costs.

CN115354575BActive Publication Date: 2026-07-17SICHUAN ROAD & BRIDGE CONSTRUCTION GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN ROAD & BRIDGE CONSTRUCTION GROUP CO LTD
Filing Date
2022-07-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing method for installing steel box girders in cable-stayed bridges with medium cable planes is complex and requires the use of mobile cranes for cable installation, which increases construction costs and reduces production efficiency.

Method used

Design a multi-functional bridge deck crane, including a main truss, lifting system, walking mechanism, support and anchoring system, cable-stayed cable hoisting system and rear anchoring system. It can hang the cable-stayed cables on the crane before hoisting the steel beam, and adjust the cable-stayed cables to the installation position through sliding beam, lateral movement mechanism and jacking mechanism.

Benefits of technology

The process of installing steel box girders has been simplified, reducing reliance on truck cranes, improving construction efficiency, and lowering costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115354575B_ABST
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Abstract

The application discloses a multifunctional deck crane for a cable-stayed bridge with a medium cable plane; the deck crane comprises a main truss, a lifting system, a walking mechanism, a supporting anchoring system, a stay cable hoisting system, a rear anchoring system and a lifting appliance. Before hoisting a beam, two stay cables can be hung on the stay cable hoisting mechanism of the deck crane. After the deck crane hoists a steel beam to a position and completes welding of the steel beam, the deck crane drives the stay cables to move to a position for hoisting the next steel beam, and the stay cable hoisting mechanism starts to work. The upper sliding crossbeam is driven by an oil cylinder, and can move along the bridge. The transverse moving mechanism is screw transmission, and the sliding support can slide along the bridge by rotating the horizontal screw rod manually. The jacking mechanism is also screw transmission, and the height position of the stay cable can be adjusted by rotating the vertical screw rod, so that the stay cable enters the installation position. Then, the stay cable is fixed to the anchor plate of the steel beam by a pin shaft. The installation of the steel beam is completed, and the hoisting of the next steel beam can be started.
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