Air inflation device for high-pressure chamber and low-pressure chamber of buffering strut of aircraft landing gear

Abstract

The invention discloses an air inflation device for a high-pressure chamber and a low-pressure chamber of a buffering strut of an aircraft landing gear and relates to an air inflation device, which aims to solve the problems of complex structure, complicated air inflation process, poor airtight performance between the air inflation device and the high-pressure chamber and the low-pressure chamber of the buffering strut of the aircraft landing gear and inaccurate control on the inflating volume of the existing air inflation device. A main valve body is internally and horizontally provided with a valve cavity, wherein the left end of the valve cavity is blocked by a choke plug; the right end of the valve cavity is connected with a second direct connection joint; the first direct connection joint is connected with an air inflation ball valve; the air inflation ball valve and an air discharging ball valve are communicated with the valve cavity; an air inflation switch is connected with the air inflation ball valve; an air discharging switch is connected with the air discharging ball valve; a fine tuning switch is mounted on the air discharging ball valve; a pressure gage is located between the air inflation ball valve and the air discharging ball valve; the pressure gage is mounted on a main valve body and is communicated with the valve cavity; the first direct connection joint is connected with a high-pressure nitrogen cylinder; the second direct connection joint is connected with the high-pressure chamber and the low-pressure chamber of the buffering strut of the aircraft landing gear. The air inflation device is simple in structure; the structure is simplified while the airtight performance is greatly improved.

Description

technical field [0001] The invention relates to an inflatable device, in particular to an inflatable device for high and low pressure chambers of buffer struts of an aircraft landing gear, and belongs to the technical field of aircraft inflatable devices. Background technique [0002] The main device for an aircraft to take off and land is the landing gear, which is a device used to support the weight of the aircraft and bear the corresponding load when the aircraft is parked, taxied, taken off, and landed on the ground. It dissipates and absorbs the impact energy of the aircraft during landing and taxiing. [0003] When the aircraft is landing and rolling, the aerodynamic lift it receives is less than the gravity of the aircraft, the landing gear will be supported by the ground and the friction between the ground and the wheels. The force on the wheel and the moment relative to the center of gravity of the aircraft are an important part of the resultant force and moment on...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high and low pressure cavity inflation device for the landing gear buffer strut to solve the problem of the airtightness between the inflatable device and the landing gear buffer strut high and low pressure cavity due to the complex structure of the existing inflation device and the complicated inflation process. Poor, the problem of inaccurate inflation control

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