Pneumatic drive emergency auxiliary deceleration system

Abstract

The invention discloses a pneumatically-driven emergency auxiliary deceleration system, and relates to the field of aircraft brake equipment, and the technical scheme of the invention is as follows: the pneumatically-driven emergency auxiliary deceleration system comprises a driving bin, a guide piece, a steel block and a pneumatically-driven piece; the driving bin is vertically arranged at the upper top of the undercarriage, a sliding cavity is vertically formed in the driving bin, and the guiding piece is axially arranged in the sliding cavity; the steel block is in sliding fit with the guide piece, and is in sliding fit with the inner wall of the sliding cavity at the same time; air holes are formed in the upper end and the lower end of the driving bin correspondingly and communicate with the air pressure driving piece correspondingly. Pressure can be provided for the undercarriage, so that the friction force between an aircraft tire and the ground is increased, and the auxiliary braking effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of aircraft braking equipment, and in particular to an air pressure driven emergency auxiliary deceleration system. Background Art

[0002] With the popularity and rapid development of aircraft, safety has become inevitable and a social consensus. Various technologies on aircraft are increasingly designed from a safety perspective. The braking process during landing is no exception as it is an important part of flight.

[0003] Aircraft braking devices usually include spoilers, reverse thrust, brakes and flaps. Among them, except for reverse thrust, the rest cannot brake more effectively at critical moments. However, since reverse thrust is a precision mechanical instrument, it is easy to malfunction and fail. When reverse thrust fails, the other methods have to take on most of the work, which will cause wear of the brake pads, brake failure, and other situations; at the same time, if reverse thrust fails, it will also lead to prolonged braking time. In runway intrusion accidents during landing, or aircraft overweight landing accidents, if reverse thrust fails, it will cause more casualties. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a pneumatically driven emergency auxiliary deceleration system, which can provide pressure to the landing gear, thereby increasing the friction between the aircraft tires and the ground, and achieving the effect of auxiliary braking.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a pneumatically driven emergency auxiliary deceleration system, comprising a driving chamber, a guide member, a steel block and a pneumatically driven member;

[0006] The drive compartment is vertically arranged on the top of the landing gear, a sliding cavity is vertically arranged in the drive compartment, and the guide member is axially arranged inside the sliding cavity;

[0007] The steel block is slidably matched with the guide member, and the steel block is slidably matched with the inner wall of the sliding cavity;

[0008] The upper and lower ends of the driving chamber are respectively provided with air holes, and the air holes are respectively communicated with the pneumatic driving parts.

[0009] This solution uses a pneumatic drive to drive the steel block upward. The steel block has good wear resistance, is more durable, and has stable performance. The steel block moves up and down in the drive compartment and drives the landing gear downward, exerting downward pressure on the landing gear. When the aircraft descends on the runway, the downward pressure exerted on the landing gear will increase the pressure between the aircraft wheels and the ground, increase the friction between them, and increase the braking force on the aircraft.

[0010] Preferably, the guide member is made of a carbon fiber rope, and both ends of the guide member are fixed to the driving compartment respectively. The guide member can be more durable.

[0011] Preferably, the steel block is provided with a through hole for the guide member to pass through, so as to facilitate the mutual cooperation between the guide member and the steel block.

[0012] Preferably, the upper section of the guide member is provided with a carbon fiber blocking block.

[0013] Preferably, a distance meter is provided at the lower end of the guide member, and the distance meter is used to measure the distance from the steel block. The upper movement limit of the carbon fiber block can be limited.

[0014] Preferably, two drive chambers are arranged side by side on the top of one landing gear. The steel blocks of the two drive chambers slide downward alternately to provide pressure, so that the overall equipment can run more stably.

[0015] Preferably, the pneumatic drive member is an air pump, so as to provide pneumatic power more efficiently.

[0016] Preferably, an air chamber is fixed on one side of the driving chamber, the air pressure driving member is arranged in the air chamber, and the air chamber is provided with an air window communicating with the outside, so that the air pressure driving member can be fixed more stably.

[0017] Advantages of the present invention:

[0018] This solution can provide pressure on the landing gear, thereby increasing the friction between the aircraft tires and the ground, achieving the effect of auxiliary braking. When other braking methods are not ideal or fail, this solution can achieve aircraft braking to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a schematic diagram of an embodiment of the present invention;

[0021] Among them, 1. Drive chamber; 2. Sliding chamber; 3. Steel block; 4. Carbon fiber blocking block; 5. Guide part; 6. Rangefinder; 7. Air chamber; 8. Landing gear; 9. Pneumatic drive part. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0023] Example

[0024] like Figure 1 As shown, a pneumatically driven emergency auxiliary deceleration system comprises a driving chamber 1, a guide member 5, a steel block 3 and a pneumatic driving member 9;

[0025] The driving compartment 1 is vertically arranged on the top of the landing gear 8, a sliding cavity 2 is vertically arranged in the driving compartment 1, and the guide member 5 is axially arranged inside the sliding cavity 2;

[0026] The steel block 3 is slidably matched with the guide member 5, and the steel block 3 is slidably matched with the inner wall of the sliding cavity 2;

[0027] The upper and lower ends of the driving chamber 1 are respectively provided with air holes, and the air holes are respectively connected to the pneumatic driving member 9.

[0028] In this solution, the pneumatic drive member 9 drives the steel block 3 to move upward, and the steel block 3 has good wear resistance, is more durable, and has stable performance. The steel block 3 moves up and down in the drive compartment and drives the landing gear 8 to move downward, exerting downward pressure on the landing gear 8. When the aircraft descends on the runway, the downward pressure exerted on the landing gear 8 will increase the pressure between the aircraft wheels and the ground, increase the friction between them, and increase the braking force on the aircraft.

[0029] The guide member 5 is made of a carbon fiber rope, and both ends of the guide member 5 are respectively fixed to the driving chamber 1. The guide member 5 can be more durable. The steel block 3 is provided with a through hole for the guide member 5 to pass through, so as to facilitate the mutual cooperation between the guide member 5 and the steel block 3.

[0030] The upper section of the guide member 5 is provided with a carbon fiber blocking block 4 .

[0031] A distance meter 6 is provided at the lower end of the guide member 5, and the distance meter 6 is used to measure the distance from the steel block 3. The upper movement limit of the carbon fiber block can be limited.

[0032] Two driving chambers 1 are arranged side by side on the top of one landing gear 8. The steel blocks 3 of the two driving chambers 1 slide downward alternately to provide pressure, which can make the overall equipment run more stably.

[0033] The pneumatic drive member 9 is an air pump, which is convenient for providing pneumatic power more efficiently.

[0034] An air chamber 7 is fixed to one side of the driving chamber 1, and the pneumatic driving member 9 is arranged in the air chamber 7. The air chamber 7 is provided with an air window communicating with the outside, so that the pneumatic driving member 9 can be fixed more stably.

[0035] Advantages of the present invention:

[0036] This solution can provide pressure on the landing gear 8, thereby increasing the friction between the aircraft tires and the ground, achieving the effect of auxiliary braking. When other braking methods are not ideal or fail, this solution can achieve aircraft braking to a certain extent.

[0037] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A pneumatically driven emergency auxiliary deceleration system, characterized in that: It comprises a driving chamber (1), a guide member (5), a steel block (3) and a pneumatic driving member (9); The drive compartment (1) is vertically arranged on the top of the landing gear (8), a sliding cavity (2) is vertically arranged in the drive compartment (1), and the guide member (5) is axially arranged inside the sliding cavity (2); The steel block (3) is slidably fitted on the guide member (5), and the steel block (3) is slidably fitted with the inner wall of the sliding cavity (2); The upper and lower ends of the driving chamber (1) are respectively provided with air holes, and the air holes are respectively connected to the pneumatic driving member (9).

2. A pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: The guide member (5) is made of a carbon fiber rope, and both ends of the guide member (5) are respectively fixed to the driving compartment (1).

3. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: The steel block (3) is provided with a through hole for the guide member (5) to pass through.

4. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: The upper section of the guide member (5) is provided with a carbon fiber blocking block (4).

5. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: A distance meter (6) is arranged at the lower end of the guide member (5), and the distance meter (6) is used to measure the distance from the steel block (3).

6. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: Two drive compartments (1) are arranged side by side on the top of one landing gear (8).

7. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: The pneumatic driving component (9) is an air pump.

8. The pneumatically driven emergency auxiliary deceleration system according to claim 1, characterized in that: An air chamber (7) is fixed on one side of the driving chamber (1), the air pressure driving component (9) is arranged in the air chamber (7), and the air chamber (7) is provided with an air window communicating with the outside.

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