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Automatic brake device for folding landing gear

A technology of automatic braking and landing gear, applied in the direction of automatic starting device, brake transmission device, brake, etc., can solve the problems of aggravating tire wear and increasing maintenance workload of maintenance personnel.

Pending Publication Date: 2022-04-15
JIANGXI HONGDU AVIATION IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a certain hysteresis, because the wheel well door is generally retracted after the landing gear is retracted in place; and the friction between the brake pad and the tire will aggravate the wear of the tire and increase the maintenance workload of the maintenance personnel.

Method used

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  • Automatic brake device for folding landing gear

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] An automatic brake device for retracting the landing gear, the device includes an automatic brake cylinder 1, a rib plate 2, a spring 3, a base 4, a rocker arm 5 and an emergency brake relief valve 6;

[0023] The rib plate 2 is fixed on the automatic brake cylinder 1;

[0024] One end of the spring 3 is connected to the rib plate 2, and the other end of the spring 3 is connected to the rocker arm 5;

[0025] The base 4 is connected to the rocker arm 5...

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Abstract

The invention relates to an automatic brake device for folding an undercarriage, and belongs to the field of design of aircraft hydraulic systems. The device comprises an automatic brake actuating cylinder, a rib plate, a spring, a base, a rocker arm and an emergency brake pressure reducing valve, the rib plate is fixed on the automatic brake actuating cylinder; one end of the spring is connected with the rib plate; the other end of the spring is connected with the rocker arm; the base is connected with the rocker arm; and the emergency brake pressure reducing valve is positioned below the automatic brake actuating cylinder. By means of the automatic braking device, the rotating airplane wheel can be braked in the retracting process of the airplane wheel, meanwhile, the automatic braking pressure is removed after the airplane wheel cabin door is retracted in place and an undercarriage retracting and releasing switch is closed to be neutral, and the safety of an airplane is guaranteed.

Description

technical field [0001] The invention relates to an automatic brake device for retracting landing gear, which belongs to the field of aircraft hydraulic system design. Background technique [0002] In order to ensure that the tires will not damage the lines and pipelines in the wheel well after the aircraft landing gear is retracted, and at the same time avoid the vibration caused by the unbalanced rotation of the retracted wheels, the aircraft braking system should have an automatic braking function when the landing gear is retracted. [0003] The wheel retraction and braking function can be realized by installing brake pads on the wheel well door. When the wheel well door is retracted in place, the brake pads rub against the tires to stop the wheels. This method has a certain hysteresis, because the wheel well door is generally retracted after the landing gear is retracted in place; and the friction between the brake pad and the tire increases the wear of the tire and incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/42B60T7/12B60T13/22
Inventor 龚明阳章昊梁衡焦奇峰卢亚洲肖定福付俊刘俊晨
Owner JIANGXI HONGDU AVIATION IND GRP
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