A pressure-resistant device for replacing a hydraulic cylinder of a turnover door

By using the upper clamp assembly, lower clamp assembly, and synchronous gantry-type pressure-bearing frame, and taking the connection part of the old hydraulic cylinder as a reference, the problems of force balance and space limitation in the replacement of hydraulic cylinders for flap doors were solved, and the error-free installation of the new cylinder and the simplified disassembly process were achieved.

CN122401313APending Publication Date: 2026-07-17SICHUAN JIALINGJIANG CANGXI AVIONICS DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN JIALINGJIANG CANGXI AVIONICS DEV CO LTD
Filing Date
2026-05-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to maintain the force balance of the flap door when replacing the hydraulic cylinder, which makes it difficult to install the new cylinder. Furthermore, the adjustment mechanism of the support device is prone to locking under extreme working conditions, and the limited space makes it difficult to erect the support frame.

Method used

The system employs an upper clamp assembly, a lower clamp assembly, and a synchronous gantry-type pressure-bearing frame. Using the upper and lower connecting parts of the old hydraulic cylinder as a reference, and through the pressure-bearing screw and adaptive support assembly, it achieves bypass bearing and synchronous lifting of the flap door load, ensuring the coaxial installation of the new cylinder.

Benefits of technology

It enables error-free misalignment installation of new hydraulic cylinders under extreme working conditions, avoiding the locking of support devices and space limitations, and simplifying the process of removing old hydraulic cylinders and installing new ones.

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Abstract

本发明涉及翻板门支撑技术领域,尤其涉及一种用于更换翻板门液压油缸的耐压装置,它包括夹持旧油缸的上抱箍组件、下抱箍组件及同步门式承压框架。同步门式承压框架由平行于旧油缸的两根承压丝杠及底部的同步驱动组件构成,承接翻板门载荷。承压丝杠顶端设有自适应支撑总成,包含可纵向伸缩的竖向连接杆及受压状态下摩擦阻转结构。本发明以外接旁路形式接管载荷,使内部旧油缸处于无应力悬浮态即可侧向抽离,框架保留原油缸的同轴度,新油缸装入时孔位完美重合,免去重压下微调对孔的繁琐工序。其自适应支撑总成能在顶升时贴合门体倾角并受重锁死,消除支撑缝隙,避免门体下沉错位,极大提升了更换作业的安全性与效率。
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