Hydraulic butt joint equipment for flange assembly

By using a hydraulically driven flange docking device, which utilizes a rigid chuck fixation and a gear-link type disc assembly, high-precision docking of heavy-duty flanges is achieved. This solves the problems of low precision and cumbersome operation in existing technologies, and improves safety and efficiency.

CN121972941AActive Publication Date: 2026-05-05JIANGSU HAIDA PIPE FITTINGS GROUP
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Patent Information

Application Number
CN202610223576.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-25
Publication Date
2026-05-05
Estimated Expiration
2046-02-25

AI Technical Summary

Technical Problem

Existing flange docking equipment suffers from low precision and poor repeatability when docking heavy pipelines. It is prone to misjudgment due to visual errors and fatigue. In addition, it is cumbersome to operate, inefficient, and lacks safety.

Method used

The system employs a frame, hydraulic station, hydraulic lifting assembly, keyshaft-type advance assembly, chuck, hydraulic docking assembly, and hydraulic shaft rotation drive assembly. It achieves precise alignment and docking of flanges through hydraulic drive, utilizes a rigid chuck for fixing, independently levels the gear-connecting rod type disc assembly, rotates the keyshaft-type advance assembly to align the holes, and finally advances the hydraulic docking assembly to complete high-precision and efficient flange docking.

Benefits of technology

It achieves high-precision and stable flange connection, reduces adjustment coupling and uncertainty, avoids the risk of scratching the sealing surface, improves the smoothness and safety of the operation process, and significantly shortens the operation time.

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Abstract

The invention discloses hydraulic butt joint equipment for flange assembly. Comprising a frame with threaded foot supports and universal wheels, a square-opening vertical beam vertically and fixedly mounted at the top end of the frame, a hollow frame slidably mounted on the outer wall of one side of the square-opening vertical beam in the vertical direction, a key shaft type advancing assembly mounted in the hollow frame and a chuck mounted at the driving end of the key shaft type advancing assembly. The key shaft type advancing assembly enables the chuck to rotate, and a hydraulic lifting assembly used for controlling the height of the hollow frame is installed on the outer wall of one side of the square opening vertical beam. The chuck and the heavy flange plate are made to rotate through the key shaft type advancing assembly till hole positions are aligned, the heavy flange plate and the fixed end flange are made to make contact through the hydraulic butt joint assembly, and therefore rigid fixing is achieved through the chuck, independent leveling is conducted on the gear connecting rod type alignment plate assembly, rotary hole alignment is conducted through the key shaft type advancing assembly, and finally propelling is conducted through the hydraulic butt joint assembly. And high-precision and high-efficiency flange butt joint operation is completed.
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