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Airplane wheel brake system capable of selecting slipping braking mode according to braking pressure

A technology of braking system and braking machine, applied in the direction of aircraft braking arrangement, control mechanism, brake, etc., can solve the problem of not being able to choose the braking method.

Inactive Publication Date: 2016-11-09
XIAN AVIATION BRAKE TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the inadequacy of the inability to select the braking mode in the prior art, the present invention proposes an aircraft wheel braking system that selects taxiing braking based on the braking pressure

Method used

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  • Airplane wheel brake system capable of selecting slipping braking mode according to braking pressure

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Embodiment Construction

[0018] This embodiment is an aircraft wheel brake system that selects taxi brakes based on brake pressure.

[0019] Described braking system is conventional hydraulic control. The main landing gear is equipped with a brake wheel with two brake devices, which are called single-wheel double-brake wheels. The brake discs of the brakes are made entirely of carbon-carbon composite friction material.

[0020] One of the two braking devices has fewer brake discs, and is a single-disc or double-disc brake device, which makes the axial size of the heat store small, so it is called a small brake device; the other brake device has a brake disc The number is large, and it is a multi-disc brake device, which makes the axial size of the heat storage large, so it is called a large brake device. Both the small braking device and the large braking device are disclosed in the invention creation with application number 201610281025.2:

[0021] The thermal reservoir of the small brake device i...

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Abstract

Provided is an airplane wheel brake system capable of selecting a slipping braking mode according to braking pressure. The airplane wheel brake system comprises a hydraulic brake valve, an electro-hydraulic servo valve, a control box, a magnetic valve, a pressure sensor and an airplane wheel speed sensor. The control box, the electro-hydraulic servo valve and the airplane wheel speed sensor form a brake slipping prevention control part. The magnetic valve, the pressure sensor and the control box are used for achieving braking selection for a brake airplane wheel. The pressure sensor is installed on a hydraulic pipeline at a brake opening of the electro-hydraulic servo valve. The hydraulic pipeline delivered from the brake system to an airplane wheel brake device is divided into two paths, and the two paths communicate with a small brake device oil inlet and a large brake device oil inlet correspondingly. By controlling the two paths of the hydraulic pipeline, only a small brake device operates when an airplane glides on the ground, and the two brake devices operate simultaneously under other situations, abrasion to a carton plate during slipping braking is reduced, and the service life of the carbon plate is prolonged. The problems that an existing carbon brake plate for a single-wheel single-brake mode is badly abraded and is short in service life are solved, the service life of the carbon plate is prolonged, and the economic benefits of the carbon plate are increased.

Description

technical field [0001] The invention relates to an aircraft wheel brake system, in particular to a brake control system with single-wheel double brakes and taxi brake selection based on brake pressure. Background technique [0002] Compared with steel brakes, aircraft carbon brakes have the advantages of light weight, wear resistance, high specific heat, and non-bonding at high temperatures because the brake discs are completely made of carbon-carbon composite friction materials, which significantly improves the technical performance and reliability of aircraft use. Safety, maintenance and economy, so it is widely used in modern aircraft. Carbon brakes are especially suitable for high-energy braking situations, and their excellent friction and wear characteristics endow carbon brake discs with durable qualities. However, after the carbon brake was put into field operation, it was found that the service life of the carbon brake disc could not reach the given life value of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/44B64C25/46B64C25/42B60T8/17
CPCB60T8/1703B64C25/42B64C25/44B64C25/46
Inventor 何永乐王红玲
Owner XIAN AVIATION BRAKE TECH
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