A posture precision control method for synchronous lifting of a large-span air shield gate

By constructing a distributed collaborative control architecture, real-time data collection of the air shield gates and implementation of dual tilt-pressure adjustment, zoned collaborative control, and vibration suppression, the attitude instability problem of large-span air shield gates was solved. This enabled synchronous lifting and lowering of multiple gates and precise and stable attitude control, improving the system's coordination and operational stability.

CN122304338APending Publication Date: 2026-06-30JIANGXI YUKUN EQUIP TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI YUKUN EQUIP TECH CO LTD
Filing Date
2026-04-01
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies cannot achieve full-stroke synchronous lifting and precise and stable attitude control of large-span air shield gates. In particular, when multiple gates are running in parallel, attitude instability problems such as gate tilting, pitch deviation, and rolling deflection are prone to occur, resulting in safety hazards such as poor synchronization, uneven force distribution, and local leakage.

Method used

A distributed collaborative control architecture is constructed to collect the pitch angle, roll angle, and airbag pressure signals of the air shield gate in real time. Through dual adjustment of tilt angle and pressure, zone collaborative control, stepless adjustment of inflation and deflation volume, and vibration suppression functions, the attitude of the air shield gate is precisely controlled.

Benefits of technology

It significantly improves the accuracy and stability of the attitude control of the air shield gate, reduces the safety hazards of leakage and uneven stress, adapts to the actual engineering needs of large-span air shield gate cluster operation, and enhances the system's synergy and versatility.

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Abstract

This invention discloses a precise attitude control method for the synchronous lifting and lowering of a large-span pneumatic shield gate, relating to the field of water conservancy and hydropower engineering control technology. Based on real-time acquisition of gate pitch angle, roll angle, and airbag pressure, this invention constructs a distributed collaborative control architecture integrating tilt angle-pressure dual closed-loop regulation, zoned collaborative control, stepless adjustment of inflation and deflation volume, and vibration suppression. Global synchronization is achieved through unified attitude command issuance; zoned deviation correction ensures consistent attitude across multiple gates; and a three-stage air volume adjustment (lifting, pressure holding, and overflow) adapts to different operating conditions. Damping modulation based on the attitude change rate suppresses water flow disturbance vibrations. This achieves synchronous lifting and lowering of the large-span pneumatic shield gate throughout its entire stroke and high-precision attitude stability control. This invention significantly improves gate operation safety, synchronization accuracy, and anti-interference capability, and is suitable for large-span pneumatic shield gate cluster control scenarios in river hubs and comprehensive watershed management projects.
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Citation Information

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