Aircraft tire-pavement interaction test device under composite working conditions

Abstract

The invention relates to an aircraft tire-pavement interaction test device under composite working conditions. The device comprises a supporting frame, an organic glass bearing platform, a semitransparent nylon belt, a water recycling plate, a bearing platform, a high-speed camera, a water storage tank, a centrifugal pump, a square pipe stand column, a lower supporting frame, a high-speed camera bearing platform, a winding drum, a connecting water pipe, a nozzle, a tire support, a lateral hydraulic loading platform, a vertical hydraulic lifting platform, a vertical load supporting plate, a hollow rotating platform and a lateral supporting plate. An upper support plate, a displacement sensor, a dynamic water pressure sensor, a strain sensor and a controller; according to the invention, vertical and lateral loading and a certain lateral deviation angle of the aircraft tire at different speeds and water film thicknesses can be realized, so that the real condition of the aircraft tire sliding on a wet slideway surface under a crosswind condition is reflected, and the loading and testing requirements of an aircraft tire-pavement interaction test are met. In addition, the device has the advantages of being reasonable in structural design, convenient to operate, complete in function and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft detection devices, and in particular relates to an aircraft tire-road surface interaction test device under composite working conditions. Background Art

[0002] With the rapid development of China's civil aviation industry, aircraft, as the main means of transportation in the air transport industry, have always been valued by practitioners in the research and evaluation of their safety performance. The take-off and landing phases of aircraft have always been the key nodes for frequent aviation accidents. Accidents caused by complex weather conditions account for almost the vast majority of the total number of accidents. When an aircraft takes off or lands on a contaminated runway, it is very likely to hydroplaning, causing the aircraft to lose steering and braking force. At present, most of the domestic research on aircraft tire-pavement interaction is carried out through numerical simulation; the lack of aircraft tire-pavement interaction test data has hindered the application research of aircraft tire hydroplaning in my country. Therefore, it is particularly important to study the problem of aircraft tire-pavement interaction through experiments. Summary of the invention

[0003] In order to solve the above problems, the object of the present invention is to provide an aircraft tire-road surface interaction test device under complex working conditions.

[0004] In order to achieve the above-mentioned object, the aircraft tire-pavement interaction test device under composite working conditions provided by the present invention comprises a support frame, an organic glass base, a translucent nylon belt, a water recovery plate, a base, a high-speed camera, a water storage tank, a centrifugal pump, a square tube column, a lower support frame, a high-speed camera base, a reel, a connecting water pipe, a nozzle, a tire bracket, a lateral hydraulic loading platform, a vertical hydraulic lifting platform, a vertical load support plate, a hollow rotating platform, a lateral support plate, an upper support plate, a displacement sensor, a dynamic water pressure sensor, a strain sensor and a controller;

[0005] The support frame includes a top plate, a square tube column, a built-in column and a fixing device; the top plate is arranged horizontally, and a guide rail is formed in the middle of the bottom surface along the left and right directions; the upper ends of the four square tube columns are respectively connected to the four corners of the top plate; the square tube column is divided into an upper and lower section, a vertical bar hole is formed on one side of the upper section, and the lower end of the lower section is arranged on the ground; a built-in column is inserted into the interior of each square tube column, and a plurality of sockets corresponding to the positions of the above-mentioned vertical bar holes are formed on one side of the built-in column at intervals in the up and down directions, and the overall height of the support frame is adjusted by inserting the fixing device into different sockets;

[0006] The lower support frame is arranged on the ground inside the support frame, and a reel extending axially in the front-back direction is respectively installed on both sides in a rotating manner, and a motor is arranged inside the reel; the two ends of the translucent nylon belt are respectively wound on the two reels, and the middle part is flattened to simulate the road surface; the high-speed camera support platform is installed on the part between the two reels on the lower support frame; the high-speed camera is installed on the high-speed camera support platform, and the lens faces upward; the organic glass support platform and the support platform are arranged from top to bottom between the high-speed camera and the middle part of the translucent nylon belt, and an opening for setting the lens on the high-speed camera is formed on the bottom surface of the support platform;

[0007] The water storage tank is arranged outside one end of the lower support frame; the nozzle is arranged on the upper side of the drum away from the water storage tank; the water inlet and outlet of the centrifugal pump are respectively connected to the water storage tank and the nozzle through connecting water pipes; one end of the water recovery plate is located on the upper side of the drum close to the water storage tank, and the other end is inclined downward and extends to the inside of the water storage tank;

[0008] The upper support plate is arranged horizontally, and the top surface is fixed on the bottom surface of the top plate, and two linear guide rails extending in the left and right directions are arranged on the bottom surface; a slider matching the above-mentioned linear guide rail is arranged on the top surface of the vertical load support plate, and the slider is installed on the linear guide rail in a sliding manner; the lateral support plate is arranged vertically, and the upper end is connected to the edge of one side of the bottom surface of the top plate; one end of the lateral hydraulic loading platform is connected to the lateral support plate, and the other end is connected to one side surface of the vertical load support plate; the upper part of the hollow rotating platform is connected to the vertical load support plate, and is equipped with a servo motor; the upper end of the vertical hydraulic lifting platform is connected to the bottom surface of the hollow rotating platform, and the lower end is connected to the tire bracket; the tire to be tested is mounted on the tire bracket in a rotatable manner, and the motor is installed inside;

[0009] The displacement sensor is installed at the connection between the tire to be tested and the tire bracket; the dynamic water pressure sensor is arranged on the upper side of the middle part of the translucent nylon belt; the strain sensor is installed at the end of the tire to be tested;

[0010] The controller is electrically connected to the high-speed camera, the centrifugal pump, the motor in the drum, the lateral hydraulic loading platform, the vertical hydraulic lifting platform, the servo motor of the hollow rotating platform, the displacement sensor, the dynamic water pressure sensor, the strain sensor and the motor in the tire to be tested.

[0011] A control valve and a flow meter are arranged inside the nozzle.

[0012] The lower support frame is made of steel pipe.

[0013] The bearing platform is made of steel plate.

[0014] The aircraft tire-pavement interaction test device under composite working conditions provided by the present invention has the following beneficial effects: it can realize vertical and lateral loading of aircraft tires at different speeds and water film thicknesses and lateral deviation at a certain angle, thereby reflecting the actual situation of aircraft tires sliding on a wet and slippery road surface under crosswind conditions, thereby meeting the loading and testing requirements of the aircraft tire-pavement interaction test. In addition, the device also has the advantages of reasonable structural design, convenient operation, and complete functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A stereoscopic diagram of the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention.

[0016] Figure 2 The figure is a side view of the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention.

[0017] Figure 3 This is a front view of the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention.

[0018] Figure 4 A side perspective view of the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention.

[0019] Figure 5 A three-dimensional diagram of the structure of components installed on the bottom surface of the top plate in the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-Figure 5 As shown, the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention comprises a support frame, an organic glass base 2, a translucent nylon belt 4, a water recovery plate 5, a base 6, a high-speed camera 7, a water storage tank 8, a centrifugal pump 9, a square tube column 10, a lower support frame 11, a high-speed camera base 12, a reel 13, a connecting water pipe 14, a nozzle 16, a tire bracket 18, a lateral hydraulic loading platform 19, a vertical hydraulic lifting platform 20, a vertical load support plate 21, a hollow rotating platform 22, a lateral support plate 23, an upper support plate 26, a displacement sensor, a dynamic water pressure sensor, a strain sensor and a controller;

[0022] The support frame includes a top plate 1, a square tube column 10, a built-in column 15 and a fixing device; the top plate 1 is horizontally arranged, and a guide rail is formed in the middle of the bottom surface along the left and right directions; the upper ends of the four square tube columns 10 are respectively connected to the four corners of the top plate 1; the square tube column 10 is divided into an upper and lower section, a vertical bar hole 3 is formed on one side of the upper section, and the lower end of the lower section is arranged on the ground; a built-in column 15 is inserted into the interior of each square tube column 10, and a plurality of jacks corresponding to the positions of the above-mentioned vertical bar holes 3 are formed on one side of the built-in column 15 at intervals in the up and down directions, and the overall height of the support frame is adjusted by inserting the fixing device into different jacks, so that there is a sufficient distance between the tire 17 to be tested and the translucent nylon belt 4, which is convenient for installing the sensor and replacing the tire 17 to be tested;

[0023] The lower support frame 11 is set on the ground inside the support frame, and a reel 13 axially extending in the front-to-back direction is respectively installed on both sides in a rotatable manner, and a motor is arranged inside the reel 13; the two ends of the translucent nylon belt 4 are respectively wound on the two reels 13, and the middle part is flattened to serve as a simulated road surface; a high-speed camera support 12 is installed on the part between the two reels 13 on the lower support frame 11; the high-speed camera 7 is installed on the high-speed camera support 12, and the lens faces upward; the organic glass support 2 and the support 6 are arranged from top to bottom between the high-speed camera 7 and the middle part of the translucent nylon belt 4, and an opening for setting the lens on the high-speed camera 7 is formed on the bottom surface of the support 6; the translucent nylon belt 4 and the organic glass support 2 both have a certain degree of transparency, so the high-speed camera 7 below can shoot the mutual contact between the tire, the water film and the simulated road surface when they are in motion;

[0024] The water storage tank 8 is arranged outside one end of the lower support frame 11; the nozzle 16 is arranged on the upper side of the drum 13 away from the water storage tank 8; the water inlet and outlet of the centrifugal pump 9 are respectively connected to the water storage tank 8 and the nozzle 16 through the connecting water pipe 14; one end of the water recovery plate 5 is located on the upper side of the drum 13 close to the water storage tank 8, and the other end is inclined downward and extends to the inside of the water storage tank 8;

[0025] The upper support plate 26 is arranged horizontally, and the top surface is fixed on the bottom surface of the top plate 1, and two linear guide rails 25 extending in the left and right directions are arranged on the bottom surface; a slider 24 cooperating with the above-mentioned linear guide rail 25 is arranged on the top surface of the vertical load support plate 21, and is installed on the linear guide rail 25 in a sliding manner through the slider 24; the lateral support plate 23 is arranged vertically, and the upper end is connected to the edge of one side of the bottom surface of the top plate 1; one end of the lateral hydraulic loading platform 19 is connected to the lateral support plate 23, and the other end is connected to a side surface of the vertical load support plate 21; the upper part of the hollow rotating platform 22 is connected to the vertical load support plate 21, and is equipped with a servo motor; the upper end of the vertical hydraulic lifting platform 20 is connected to the bottom surface of the hollow rotating platform 22, and the lower end is connected to the tire bracket 18; the tire 17 to be tested is rotatably mounted on the tire bracket 18, and the motor is installed inside;

[0026] The displacement sensor is installed at the connection between the tire 17 to be tested and the tire bracket 18; the dynamic water pressure sensor is arranged on the upper side of the middle part of the translucent nylon belt 4; the strain sensor is installed at the end of the tire 17 to be tested;

[0027] The controller is electrically connected to the high-speed camera 7, the centrifugal pump 9, the motor in the drum 13, the lateral hydraulic loading platform 19, the vertical hydraulic lifting platform 20, the servo motor of the hollow rotating platform 22, the displacement sensor, the dynamic water pressure sensor, the strain sensor and the motor in the tire 17 to be tested.

[0028] A control valve and a flow meter are provided inside the nozzle 16 .

[0029] The lower support frame 11 is made of steel pipe.

[0030] The support platform 6 is made of steel plate.

[0031] The working principle of the aircraft tire-road surface interaction test device under composite working conditions provided by the present invention is described as follows:

[0032] 1. Under the control of the controller, the motor inside the hollow rotating platform 22 is started to deflect the hollow rotating platform 22 to different side deflection angles;

[0033] 2. Move the vertical hydraulic lifting platform 20 downward, thereby vertically loading the tire 17 to be tested through the tire support 18;

[0034] 3. Move the lateral hydraulic loading platform 19 to the left or right, thereby sequentially loading the tire 17 to be tested laterally through the vertical load support plate 21, the hollow rotating platform 22, the vertical hydraulic lifting platform 20 and the tire support 18, so as to simulate the stress condition of the aircraft tire when the aircraft is taxiing on the runway under crosswind conditions;

[0035] 4. Start the motor inside the tire 17 to be tested so that the tire 17 to be tested rotates and reaches a predetermined speed;

[0036] 5. Start the centrifugal pump 9 and adjust the control valve inside the nozzle 16 to control the sprayed water flow to achieve the required water film thickness and water film flow rate;

[0037] 6. Start the motors inside the two reels 13 to make the two reels 13 rotate in the same direction, so that the translucent nylon belt 4 on one reel 13 moves to and is wound around the other reel 13 at the same speed as the flow rate of the water film;

[0038] 7. Start the high-speed camera 7 to capture an image of the middle portion of the translucent nylon belt 4, and increase the speed of the reel 13 by a predetermined increment until the recorded trace indicates that a complete hydroplaning phenomenon has occurred.

Claims

1. An aircraft tire-road surface interaction test device under combined working conditions, characterized in that: The device comprises a support frame, an organic glass support platform (2), a translucent nylon belt (4), a water recovery plate (5), a support platform (6), a high-speed camera (7), a water storage tank (8), a centrifugal pump (9), a square tube column (10), a lower support frame (11), a high-speed camera support platform (12), a reel (13), a connecting water pipe (14), a nozzle (16), a tire bracket (18), a lateral hydraulic loading platform (19), a vertical hydraulic lifting platform (20), a vertical load support plate (21), a hollow rotating platform (22), a lateral support plate (23), an upper support plate (26), a displacement sensor, a dynamic water pressure sensor, a strain sensor and a controller; The support frame comprises a top plate (1), a square tube column (10), a built-in column (15) and a fixing device; the top plate (1) is arranged horizontally, and a guide rail is formed in the middle of the bottom surface along the left-right direction; the upper ends of the four square tube columns (10) are respectively connected to the four corners of the top plate (1); the square tube column (10) is divided into an upper and lower section, a vertical bar hole (3) is formed on one side of the upper section, and the lower end of the lower section is arranged on the ground; a built-in column (15) is inserted into the interior of each square tube column (10), and a plurality of plug holes corresponding to the positions of the above-mentioned vertical bar holes (3) are formed on one side of the built-in column (15) at intervals along the upper and lower directions, and the overall height of the support frame is adjusted by inserting the fixing device into different plug holes; The lower support frame (11) is arranged on the ground inside the support frame, and a reel (13) extending axially in the front-back direction is respectively installed on both sides in a rotatable manner, and a motor is arranged inside the reel (13); the two ends of the translucent nylon belt (4) are respectively wound on the two reels (13), and the middle part is flattened to simulate the road surface; the high-speed camera support platform (12) is installed in the part between the two reels (13) on the lower support frame (11); the high-speed camera (7) is installed on the high-speed camera support platform (12), and the lens faces upward; the organic glass support platform (2) and the support platform (6) are arranged from top to bottom between the high-speed camera (7) and the middle part of the translucent nylon belt (4), and an opening for setting the lens on the high-speed camera (7) is formed on the bottom surface of the support platform (6); The water storage tank (8) is arranged outside one end of the lower support frame (11); the nozzle (16) is arranged on the upper side of the drum (13) away from the water storage tank (8); the water inlet and outlet of the centrifugal pump (9) are respectively connected to the water storage tank (8) and the nozzle (16) through a connecting water pipe (14); one end of the water recovery plate (5) is located on the upper side of the drum (13) close to the water storage tank (8), and the other end is inclined downward and extends to the inside of the water storage tank (8); The upper support plate (26) is arranged horizontally, and the top surface is fixed on the bottom surface of the top plate (1), and two linear guide rails (25) extending in the left and right directions are arranged on the bottom surface; a slider (24) cooperating with the linear guide rail (25) is arranged on the top surface of the vertical load support plate (21), and is installed on the linear guide rail (25) in a sliding manner through the slider (24); the lateral support plate (23) is arranged vertically, and the upper end is connected to the edge of one side of the bottom surface of the top plate (1); the lateral hydraulic loading platform (19 ) is connected to a lateral support plate (23) at one end, and connected to a side surface of a vertical load support plate (21) at the other end; the upper part of a hollow rotating platform (22) is connected to the vertical load support plate (21), and is equipped with a servo motor; the upper end of a vertical hydraulic lifting platform (20) is connected to the bottom surface of the hollow rotating platform (22), and the lower end is connected to a tire support (18); a tire (17) to be tested is rotatably mounted on the tire support (18), and a motor is mounted inside; The displacement sensor is installed at the connection between the tire to be tested (17) and the tire bracket (18); the dynamic water pressure sensor is arranged on the upper side of the middle part of the translucent nylon belt (4); and the strain sensor is installed at the end of the tire to be tested (17); The controller is electrically connected to the high-speed camera (7), the centrifugal pump (9), the motor in the reel (13), the lateral hydraulic loading platform (19), the vertical hydraulic lifting platform (20), the servo motor, the displacement sensor, the dynamic water pressure sensor, the strain sensor and the motor in the tire (17) to be tested, which are matched with the hollow rotating platform (22).

2. The aircraft tire-road surface interaction test device under combined working conditions according to claim 1, characterized in that: A control valve and a flow meter are provided inside the nozzle (16).

3. The aircraft tire-road surface interaction test device under combined working conditions according to claim 1, characterized in that: The lower support frame (11) is made of steel pipe.

4. The aircraft tire-road surface interaction test device under combined working conditions according to claim 1, characterized in that: The support platform (6) is made of steel plate.

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