A wheel pneumatic pressure charging device

Abstract

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 wheel pneumatic pressure filling device, which is used for filling the tire pressure of a long-space-time aircraft in the air. Background technique [0002] Wheels and tires are the key components for the 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 failures during landing and taxiing on the ground, thereby affecting flight safety. After the tire pressure is completed, due to leakage, the tire pressure decreases with time. For ordinary aircraft, due to its short empty time and small tire pressure drop, it has no obvious impact on its work, so it only needs to complete the tire inflation on the ground; but for orbital vehicles and other vehicles with a long empty time For aircraft, the drop in tire pressure may affect its landing and ground taxi per...

AI Technical Summary

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

Images