Control logic coordination valve of undercarriage cabin door uplock

Abstract

The invention discloses a control logic coordination valve of an undercarriage cabin door uplock, which is wide in coordination range and higher in reliability. According to the technical scheme, an oil inlet pipe nozzle supplies pressure, an upper lock is in linkage with a pressing rod through a pressing mechanism, a valve element reset spring is compressed through a stepped shaft, a valve seat is driven to seal a valve element, and the oil pipe nozzle is closed; when the cabin door uplock is completely opened, the uplock applies pressing force to the pressing rod through the motion trail ofthe pressing mechanism, the pressing rod pushes the valve element, compresses the valve element reset spring, separates the valve seat of the valve and triggers the valve oil holes distributed in theconical shell of the valve element, and hydraulic oil liquid enters a valve cavity of the rear end cover through a cabin door actuator cylinder pressure supply oil way. The oil flows from the oil outlet pipe nozzle to the cabin door actuator cylinder, the actuator cylinder is pushed to open the cabin door, the compression valve element reset spring and the valve element reset spring press the pressing rod at the initial position under the action of elastic force, simultaneous pressure supply of the uplock and the cabin door actuator cylinder is achieved, and the control logic of the sequentialmovement sequence is completed through the trigger type coordination valve.

Description

technical field [0001] The invention relates to a landing gear cabin door uplock trigger coordination valve which can simplify the control logic. Background technique [0002] The landing gear retraction system is mainly used to control the retraction and extension of the landing gear, and to control the opening and closing of the main landing gear door, the front landing gear door and the landing gear. It is an important system of the aircraft. Whether it can work normally will depend on directly affect flight safety. Each landing gear bay has a hydraulically actuated door, the nose gear front door and the main gear inner door. Since the main hydraulic control and actuating components of the landing gear control system are installed in the landing gear compartment, these components include safety isolation valves, landing gear and hatch selection valves, bypass valves, uplocks and hatch actuators, etc. Therefore, in order to facilitate maintenance and maintenance of these...

AI Technical Summary

Problems solved by technology

[0004] The task of the present invention is to solve the problem that there is a sequential movement sequence between the cabin door and the upper lock, and the pressure supply control logic on the aircraft is relatively complicated. Sequence, aiming to provide a landing gear door uplock control logic coordination valve with a wide range of coordination and higher reliability, especially a landing gear door that is installed on the uplock of the landing gear door and can complete the sequential movement sequence Triggered Coordination Valve on Uplock

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