Steel box girder u-rib plate unit assembling and positioning device and control method thereof

By designing a steel box girder U-rib plate unit assembly and positioning device, and using a clamping device and a welding device to achieve precise positioning and welding of the U-rib, the problem of U-rib being difficult to clamp was solved, the welding quality and efficiency were improved, and the difficulty of manual operation was reduced.

CN121589515BActive Publication Date: 2026-06-05WUHAN LIXIN AUTOMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN LIXIN AUTOMATION TECH CO LTD
Filing Date
2026-01-28
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

During the welding of U-ribs in steel box girders, the U-ribs are made of steel and have a certain length and deformation stress, making it difficult to manually press them to the designated position on the bottom plate for welding.

Method used

A steel box girder U-rib plate unit assembly and positioning device was designed, including a gantry frame, a clamping device, and a welding device. The U-rib is accurately positioned and welded by the transverse traveling module and lifting mechanism of the clamping device. The U-rib pressure claw is driven to move along the length of the crossbeam by the transverse traveling module and lifting mechanism of the clamping device to adjust the position and posture of the U-rib, and then welded by the welding device.

Benefits of technology

It achieves accurate positioning and stable clamping of the U-rib, improves welding quality, reduces the difficulty of manual operation, improves welding efficiency and stability, and avoids positional deviation of the U-rib due to deformation stress.

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    Figure CN121589515B_ABST
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Abstract

The application provides a steel box girder U rib plate unit assembling and positioning device and a control method thereof, and belongs to the technical field of welding. The assembling and positioning device comprises a portal frame and one or more than one number of pressing devices. The portal frame comprises a crossbeam arranged along a direction perpendicular to the length direction of the U rib, and the crossbeam and the U rib move relative to each other along the length direction of the U rib. The pressing device comprises a pressing device transverse walking module and a U rib pressing module. The pressing device transverse walking module is connected with the crossbeam, and the pressing device transverse walking module walks and positions along the crossbeam. The U rib pressing module comprises a lifting mechanism and a U rib pressing claw. The U rib pressing claw is connected to the pressing device transverse walking module through the lifting mechanism, and the lifting mechanism drives the U rib pressing claw to lift. The U rib pressing claw of the assembling and positioning device can adjust the transverse position as required to adapt to different positions and numbers of U ribs, and can also be used for adjusting the position of the U rib.
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