Airplane brake-by-wire braking system for preventing emergency brake from being improperly used

A technology of emergency braking and braking system, applied in the field of aircraft wheel braking system, can solve the problems such as the conversion valve cannot be converted correctly, parked in a neutral position, hidden dangers in use, etc., and achieves the effect of eliminating the failure of emergency braking and hidden dangers of accidents and facilitating modification.

Inactive Publication Date: 2017-02-01
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main advantage of this system structure design is that it simplifies the braking device and reduces the weight. However, due to human factors, the emergency braking and normal braking are used at the same time, or the emergency braking is implemented before

Method used

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  • Airplane brake-by-wire braking system for preventing emergency brake from being improperly used

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Embodiment Construction

[0029] This embodiment is a fly-by-wire brake system used for a certain type of machine to prevent improper use of emergency brakes.

[0030] This embodiment includes a normal braking system and an emergency braking system. The normal braking system includes a braking command sensor 1 , an electromagnetic hydraulic lock 5 , an electro-hydraulic servo valve 6 , a control box 4 and a wheel speed sensor 8 . The emergency brake system includes an emergency brake valve 2 , a switching valve 7 and a switch 3 . The normal braking system and the emergency braking system are connected and converted through the switching valve 7.

[0031] The normal braking system and the emergency braking system adopt two sets of independent hydraulic pressure supply source systems.

[0032] In the normal braking system, the brake command sensor 1 is manipulated by the driver to generate a brake command voltage signal, which is used to control the brake pressure required for normal braking of the whe...

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PUM

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Abstract

The invention relates to an airplane braking system for preventing an emergency brake from being improperly used. The airplane braking system comprises a normal braking system and an emergency braking system, wherein the normal braking system comprises a braking command sensor, an electromagnetic hydraulic lock, an electromagnetic servo valve, a control box and an airplane wheel speed sensor; the emergency braking system comprises an emergency braking valve, a converting valve and a switch; and the normal braking system and the emergency braking system are contacted and converted through the converting valve. According to the airplane braking system disclosed by the invention, during emergency braking, if normal braking is also used, the normal braking system is forced to release pressure, so that pressure does not exist in a normal input opening of the converting valve, the situation that the converting valve is completely converted to the emergency braking system is guaranteed, the application of the emergency braking is guaranteed, and emergency braking failure and accident hidden danger caused by that the emergency braking and the normal braking are used at the same time are eliminated fundamentally; and according to the airplane braking system disclosed by the invention, only one electrical switch element is additionally arranged on a conventional braking system, so that conventional equipment is convenient to refit.

Description

technical field [0001] The invention relates to an aircraft wheel brake system, in particular to an aircraft fly-by-wire brake system for ensuring emergency brake operation. Background technique [0002] The aircraft wheel braking system is an important part of the landing gear of the aircraft, which is used to shorten the run distance after the aircraft lands normally, stop the aircraft as soon as possible, and prevent the tires from bursting. Aircraft fly-by-wire braking system is a new type of braking technology, and its application continues to expand. The braking system of aircraft fly-by-wire braking includes two parts: normal braking and emergency braking. The emergency braking system is used after the normal braking system fails or in certain situations. The emergency brake and the normal brake of some equipment in active service share a set of pistons, that is, a single-channel cylinder seat, to implement the brake. There is a switching valve between the normal br...

Claims

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Application Information

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IPC IPC(8): B64C25/44
CPCB64C25/44
Inventor 何永乐王红玲
Owner XIAN AVIATION BRAKE TECH
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