Pneumatic pressure charging device for airplane wheel
A wheel and pressure head technology, applied in the field of wheel pneumatic charging devices, can solve problems such as difficulty in using sealed bearings, small wheel diameter, etc., and achieve the effect of simplifying air source design and preventing wheel rotation jamming failure.
Active Publication Date: 2018-06-01
CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology
Due to the low wheel speed of ordinary ground vehicles, the design of sealed bearings is not difficult. However, for aircraft, because its landing speed is much higher than that of ground vehicles, the wheel diameter is usually smaller, resulting in a much higher wheel speed than ground vehicles. Difficult to use conventional sealed bearing solutions
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Embodiment Construction
[0017] like figure 1 As shown, the wheel pneumatic charging device is mainly composed of a pneumatic charging head 1, a dust cover with a gas path 2, and an inflating nozzle 3. Among them, the pneumatic charging head 1 is installed on the axle; the dust cover 2 with air path is connected with the air nozzle 3 and installed on the wheel. When the pneumatic charging device of the wheel is not pressurized, the pneumatic charging head 1 and the dust cover 2 with air path are in a separated state, and the dust cover 2 with air path and the air nozzle 3 installed on the wheel can rotate together with the wheel. . When the wheel pneumatic charging device is pressurized, the pneumatic charging head 1 contacts and seals the dust cover 2 with an air path under the action of air pressure, and then connects the air source to the air path of the inflating nozzle 3. Under the action, the one-way valve in the inflation nozzle 3 is opened, so that the gas enters the tire, and the tire is in...
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The invention relates to a pneumatic pressure charging device for an airplane wheel. The pneumatic pressure charging device is used for charging tire pressure for air vehicles with long airborne period in the air. After pressure charging of a tire is finished, the tire pressure is reduced with time increase due to leakage; for the air vehicles such as an orbiting vehicle and the like with quite long airborne period, the decrease values of tire pressure of the air vehicles can probably affect landing and ground taxi properties. The pneumatic pressure charging device for the airplane wheel is mounted on the airplane wheel and used for charging pressure for the tire in the air; the device comprises a pneumatic pressure charging head mounted on a wheel axle as well as a dust cover with a gas path and a charging connector which are mounted on the airplane wheel; a fixed part and a rotating part of the device are separated in an off-working state, and the fault of clamping stagnation of airplane wheel rotation probably caused by a conventional airplane wheel pressure charging scheme can be prevented. A single gas source is applied to actuation and pressure charging function, and the gassource design can be simplified accordingly.
Description
technical field [0001] The invention relates to a pneumatic inflating device for a wheel, which is used to inflate the tire pressure of an aircraft with a long vacancy time in the air. Background technique [0002] Wheels and tires are the key components for an aircraft to complete landing and taxiing on the ground. In order to ensure the normal operation of the wheels and tires, the tires must maintain a certain filling pressure as required, otherwise the aircraft is prone to puncture failure when landing and taxiing on the ground, thus affecting flight safety. After a tire is inflated, its pressure decreases over time due to leaks. For ordinary aircraft, the tire pressure drop value is small due to its short air time, which has no obvious impact on its work, so it is only necessary to complete the tire inflation on the ground; For aircraft, the drop in tire pressure may affect its landing and ground taxi performance. Therefore, such aircraft need to be equipped with a wh...
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IPC IPC(8): B60C23/10
CPCB60C23/10B60C2200/02
Inventor 钟顺东单忠茂赵嘉俊范哲谷云峰方勇
Owner CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA