Wing folding and flattening mechanism driving system and control method thereof

By designing a wing folding flattening mechanism drive system combining hydraulic and pneumatic pressure, the problems of weight increase and inconvenient operation in the prior art are solved, and the backup power supply for automatic switching is realized, and the reliability and convenience of the system are improved.

CN119749837AActive Publication Date: 2025-04-04SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Patent Information

Application Number
CN202510030151.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-04-04
Estimated Expiration
2045-01-08

AI Technical Summary

Technical Problem

The drive system of existing wing folding flattening mechanisms uses dual hydraulic systems, resulting in increased weight and inconvenient operation, especially when a hydraulic system fails, requiring manual switching of valves.

Method used

A wing folding flattening mechanism driving system including hydraulic solenoid valve, actuator cylinder, shuttle valve, high-pressure gas cylinder, pneumatic solenoid valve, inflatable valve and in-place switch is designed. Using the combination of hydraulic and air pressure, the wing flattening and folding of the wing is achieved through automatic switching.

Benefits of technology

When the hydraulic source pressure supply is abnormal, the backup power is provided through high-pressure gas cylinders, and the hydraulic and pneumatic drives are automatically switched, reducing the aircraft weight and operation complexity, and improving the reliability and convenience of the system.

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Abstract

The invention belongs to the technical field of wing folding and flattening mechanism driving design, and particularly relates to a wing folding and flattening mechanism driving system and a control method thereof.The wing folding and flattening mechanism driving system comprises a hydraulic electromagnetic valve, an actuator cylinder, a fusiform valve, a high-pressure gas cylinder, an air pressure electromagnetic valve, an inflation valve and an in-place switch; the hydraulic electromagnetic valve is connected with a hydraulic source through an oil inlet pipeline and an oil return pipeline and is connected with a rod cavity and a rodless cavity of the actuating cylinder through pipelines, a fusiform valve is arranged on the pipeline for connecting the rod cavity and the rodless cavity, and a piston rod of the actuating cylinder is connected with the wing folding and flattening mechanism; the two fusiform valves are connected with a high-pressure gas cylinder through pipelines, and a gas pressure electromagnetic valve is arranged on the pipeline through which the two fusiform valves are connected with the high-pressure gas cylinder; the inflation valve is connected with a high-pressure gas cylinder through a pipeline and connected with a high-pressure gas source. The two in-place switches are connected to a cylinder body of the actuating cylinder and used for detecting whether the wings are folded and flattened in place or not.
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