0.6-meter wind tunnel infrared test section

Abstract

The invention provides a 0.6-meter wind tunnel infrared test section. The 0.6-meter wind tunnel infrared test section comprises a rack car; the frame is arranged at the top of the rack car and slidably connected with the rack car, and positioning pin structures are arranged at the two ends of the frame respectively; the test area hole wall assembly is arranged in the frame and is in sliding connection with the frame, the test area hole wall assembly can be moved out of the frame, a positioning connecting piece is arranged on the test area hole wall assembly, and the positioning connecting piece is connected with the frame; the support area hole wall assembly is fixedly arranged in the frame; the model bracket comprises a support and a semi-curved knife, and the support is fixedly connected with the rack car; the semi-curved knife movably penetrates through the bottom of the bracket area hole wall assembly; the upper end of the half-bent knife is used for installing a model. The test area hole wall assembly can be drawn out from the test section, and germanium glass of the lower wall plate of the test area is prevented from being damaged when the model is installed; the model support adopts a half-curved knife form, the upper end of the half-curved knife is not connected with the test area upper wall plate, the space above the test area upper wall plate is not occupied, the camera arrangement requirement is met, and the device is suitable for a wind tunnel infrared test.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel testing technology, specifically a 0.6-meter-scale transonic wind tunnel infrared test section. Background Technology

[0002] With the continuous increase in the flight speed of fighter jets, infrared detection and infrared stealth have become important research topics for supersonic aircraft. In recent years, my country has made considerable progress in basic research on infrared stealth and detection, but research on long-wave infrared radiation from aircraft skin is still mainly based on numerical calculations, lacking precise experimental verification.

[0003] Wind tunnel testing is one of the fundamental methods for ground-based research and verification of aircraft. The test section, as a key component of the wind tunnel, provides support, background environment, and observation conditions (windows) for the test model and measurement instruments. The flow field quality and functionality of the test section are crucial for obtaining reliable results in wind tunnel testing. To meet the aforementioned requirements of infrared testing, a dedicated infrared test section needs to be designed. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a 0.6-meter wind tunnel infrared test section, which is suitable for wind tunnel infrared testing.

[0005] To achieve the above objectives, the present invention employs the following technical solution: A 0.6-meter wind tunnel infrared test section includes: The vehicle is equipped with a traveling mechanism at its bottom, which is mounted on a track. A frame is disposed on the top of the frame vehicle and is slidably connected to the frame vehicle in a horizontal direction perpendicular to the direction of movement of the frame vehicle. A first driving mechanism for driving the frame to slide is provided between the frame and the frame vehicle. Positioning pin structures are respectively provided at both ends of the frame along its sliding direction for positioning with the nozzle and the second cannon. The test area cavity wall assembly is disposed within the frame and is slidably connected to the frame along the sliding direction of the frame. The test area cavity wall assembly can be moved out of the frame. The test area cavity wall assembly is provided with a positioning connector, which is detachably connected to the frame. The support area cavity wall assembly is fixedly installed within the frame and located on one side of the test area cavity wall assembly along its sliding direction, and the test area cavity wall assembly can abut against the support area cavity wall assembly; The model support includes a base and a semi-curved blade. The base is fixedly connected to the frame vehicle. The base is provided with an arc-shaped slide rail. The lower end of the semi-curved blade is provided with a slider that cooperates with the arc-shaped slide rail. A second drive mechanism is provided between the base and the semi-curved blade to drive the semi-curved blade to move along the arc-shaped slide rail. The semi-curved blade moves through the bottom of the support area cavity wall assembly. The upper end of the semi-curved blade is used to mount the model.

[0006] Preferably, the walking mechanism includes two driving wheels and two driven wheels. The two driving wheels are respectively located at the bottom two corners of one end of the vehicle's movement direction, and the two driving wheels are respectively located at the bottom two corners of the other end of the vehicle's movement direction. Both the driving wheel and the driven wheel include a traveling wheel seat, a traveling wheel axle, and a traveling wheel body. The traveling wheel seat is fixed to the frame, the traveling wheel axle is rotatably connected to the traveling wheel seat, and the traveling wheel body is fixed on the traveling wheel axle. The driving wheel also includes a third motor. The housing of the third motor is fixed to the frame, and its output shaft is drively connected to the traveling wheel axle of the driving wheel. The traveling mechanism also includes four guide wheels, which are symmetrically arranged in pairs on both sides of the frame, and the guide wheels are located on the outside of the track.

[0007] Preferably, the top of the frame is provided with a linear guide rail, the frame slides with the linear guide rail, and the first drive mechanism includes a first screw jack driven by a first motor. The first screw jack is axially arranged along the sliding direction of the frame, and the outer cylinder of the first screw jack is fixed to the frame and the inner rod is fixed to the frame.

[0008] Preferably, the positioning pin structure includes a positioning pin, a positioning pin slide, and a second screw jack driven by a second motor. The positioning pin slide is fixed to the frame, and the positioning pin slide is provided with a guide hole that is slidably connected to the positioning pin. The axial direction of the positioning pin and the axial direction of the second screw jack are both arranged along the sliding direction of the frame. The outer cylinder of the second screw jack is fixed to the frame, and the inner rod is connected to the positioning pin.

[0009] Preferably, the frame is provided with a flat rail and a V-shaped guide rail, and the bottom ends of the test area tunnel wall assembly are respectively provided with a flat wheel set that cooperates with the flat rail and a V-shaped wheel set that cooperates with the V-shaped guide rail.

[0010] Preferably, the test area cave wall assembly includes an upper test area wall panel, a lower test area wall panel, a side test area wall panel, an upper wall frame, a lower wall frame, and four columns, which are located at the four corners of the upper and lower wall frames and connect the upper and lower wall frames. The upper test area wall panel is connected to the upper wall frame, the lower test area wall panel is connected to the lower wall frame, and the side test area wall panel is connected between the upper and lower test area wall panels. Multiple pieces of germanium glass are evenly installed on the upper wall panel, lower wall panel, and side wall panel of the test area.

[0011] Preferably, the side wall panel of the test area is provided with a fixed end and a movable part, the fixed end and the movable part are hinged together, the fixed end is connected to the upper wall panel and the lower wall panel of the test area respectively, and the end of the movable part away from the fixed end is provided with a wall panel angle adjustment device between it and the column; The wall panel angle adjustment device includes a first connecting seat, a second connecting seat, an adjusting seat, an adjusting screw, and an adjusting nut. The first connecting seat is fixed to the end of the movable part, the second connecting seat is fixed to the column, the adjusting seat is hinged to the second connecting seat, one end of the adjusting screw is hinged to the first connecting seat, and the adjusting nut is threaded to the adjusting screw, with one end rotatably connected inside the adjusting seat.

[0012] Preferably, there are three concentric arc-shaped slide rails, two of which are located on one side of the semi-curved blade, and the other is located on the other side of the semi-curved blade. The second drive mechanism is located on the single slide rail side of the semi-curved cutter. The second drive mechanism includes a worm gear, a worm, and a fourth motor. The worm gear is fixedly connected to the semi-curved cutter, the worm is rotatably connected to the support, the fourth motor is fixed to the support, and the output shaft of the fourth motor is drively connected to the worm.

[0013] Preferably, the support area cavity wall assembly includes an upper support area wall panel, a lower support area wall panel, and a side support area wall panel. The upper support area wall panel and the lower support area wall panel are respectively fixedly connected to the frame, and the side support area wall panel is respectively fixedly connected to the upper support area wall panel and the lower support area wall panel. A blocking plate is detachably connected to the top of the lower support area wall panel, and the semi-curved blade moves through the blocking plate.

[0014] Preferably, elastic top wheels are symmetrically arranged on both sides of the semi-curved blade. Each elastic top wheel includes a connecting shaft, a top wheel seat, a top wheel, a disc spring, and a mounting nut. A mounting plate is provided at the bottom of the lower wall panel of the support area. A shoulder is provided on the connecting shaft. One end of the connecting shaft passes through the mounting plate and can be threadedly connected to the mounting nut. The disc spring is sleeved on the connecting shaft and abuts against the shoulder and the mounting plate on both sides, respectively. The top wheel seat is fixedly connected to the other end of the connecting shaft. The top wheel is rotatably connected to the top wheel seat and abuts against the side of the semi-curved blade.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention separates the test area from the support area. When installing the model, the test area tunnel wall assembly can be completely removed from the test section. After the model is installed, the test area tunnel wall assembly is then installed back into the test section, avoiding damage to the germanium glass of the lower wall panel of the test area during model installation. Furthermore, the model support adopts a semi-curved blade structure, with the model installed at the upper end of the semi-curved blade. It is not connected to the upper wall panel of the test area and does not occupy the space above the upper wall panel of the test area, thus meeting the camera placement requirements and being suitable for wind tunnel infrared testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention from one perspective; Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention; Figure 3 This is a structural schematic diagram of the vehicle frame and the chassis from one perspective in this invention; Figure 4 This is a structural schematic diagram of the vehicle frame and the chassis from another perspective in this invention; Figure 5 This is a schematic diagram of the structure of the test area cave wall component from one perspective in this invention; Figure 6 This is a schematic diagram of the structure in which the test area cave wall assembly is removed from the frame in this invention; Figure 7 This is a schematic diagram of the structure of the test area cave wall component from another perspective in this invention; Figure 8 This is a schematic diagram of the structure of the side wall panel of the test area in this invention; Figure 9 This is a schematic diagram of the wall panel angle adjustment device in this invention; Figure 10 This is a schematic diagram of the overall structure of the model support in this invention; Figure 11 This is a partial structural diagram of the model support in this invention; Figure 12 This is a schematic diagram of the structure connecting the worm gear and the semi-curved cutter in this invention; Figure 13 This is a schematic diagram of the connection between the worm gear and the support in this invention; Figure 14 This is a schematic diagram of the structure in which the elastic top wheel and the semi-curved blade cooperate in this invention; Figure 15 This is a schematic diagram of the structure of the support area cavity wall assembly in this invention.

[0017] Explanation of reference numerals in the attached figures 1-Car frame, 101-Driving wheel, 102-Driven wheel, 103-Walking wheel seat, 104-Walking wheel axle, 105-Walking wheel body, 106-Third motor, 107-Guide wheel, 108-Railway, 109-Linear guide rail; 2-Frame, 201-First motor, 202-First screw jack, 203-Positioning pin, 204-Positioning pin slide, 205-Second motor, 206-Second screw jack, 207-Flat rail, 208-V-shaped guide rail; 3-Test area tunnel wall assembly, 301-Positioning connector, 302-Flat wheel assembly, 303-V-type wheel assembly, 304-Test area upper wall panel, 305-Test area lower wall panel, 306-Test area side wall panel, 307-Upper wall frame, 308-Lower wall frame, 309-Column, 310-Fixed end, 311-Moving part, 312-First connecting seat, 313-Second connecting seat, 314-Adjusting seat, 315-Adjusting screw, 316-Adjusting nut; 4-Support area cavity wall assembly, 401-Support area upper wall panel, 402-Support area lower wall panel, 403-Support area side wall panel, 404-Blocking plate, 405-Mounting plate; 5-Model bracket, 501-Support, 502-Half-curved knife, 503-Arc-shaped slide rail, 504-Slider, 505-Worm wheel, 506-Worm, 507-Fourth motor, 508-Connecting shaft, 509-Top wheel seat, 510-Top wheel, 511-Disc spring, 512-Mounting nut, 513-Shoulder. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the invention.

[0019] like Figures 1 to 15 As shown, a 0.6-meter wind tunnel infrared test section includes a frame 1, a frame 2, a test area tunnel wall assembly 3, a support area tunnel wall assembly 4, and a model support 5.

[0020] The frame 1 has a traveling mechanism at its bottom, which is mounted on a track 108. Specifically, the traveling mechanism includes two driving wheels 101 and two driven wheels 102. The two driving wheels 101 are respectively located at the bottom corners of one end of the frame 1 in the direction of movement, and at the bottom corners of the other end of the frame 1 in the direction of movement. Each driving wheel 101 and driven wheel 102 includes a traveling wheel seat 103, a traveling wheel axle 104, and a traveling wheel body 105. The traveling wheel seat 103 is fixed to the frame 1, the traveling wheel axle 104 is rotatably connected to the traveling wheel seat 103, and the traveling wheel body 105 is fixed to the traveling wheel axle 104. The driving wheel 101 also includes a third motor 106. The housing of the third motor 106 is fixed to the frame 1, and its output shaft is drivenly connected to the traveling wheel axle 104 of the driving wheel 101. The two driving wheels 101 and the two driven wheels 102 are used to move the test section into and out of the wind tunnel chamber.

[0021] To constrain the posture of the test section during the walking process, the walking mechanism also includes four guide wheels 107. The four guide wheels 107 are symmetrically arranged in pairs on both sides of the frame 1. The guide wheels 107 are located on the outside of the track 108 and have a gap with the outer side of the track 108. In this embodiment, the gap can be set to 0.5mm.

[0022] The frame 2 is disposed on the top of the frame 1 and is slidably connected to the frame 1 in a horizontal direction perpendicular to the moving direction of the frame 1. A first driving mechanism for driving the frame 2 to slide is provided between the frame 2 and the frame 1. The frame 2 is provided with positioning pin structures at both ends along its sliding direction for positioning with the nozzle and the second cannon.

[0023] Specifically, the top of the frame 1 is provided with a linear guide rail 109, and the frame 2 is slidably engaged with the linear guide rail 109. The first driving mechanism includes a first screw jack 202 driven by a first motor 201. The first screw jack 202 is axially arranged along the sliding direction of the frame 2. The outer cylinder of the first screw jack 202 is fixed to the frame 1, and the inner rod is fixed to the frame 2. Through the linear guide rail 109 and the first driving mechanism, the frame 2 can move relative to the frame 1.

[0024] The positioning pin structure includes a positioning pin 203, a positioning pin slide 204, and a second screw jack 206 driven by a second motor 205. The positioning pin slide 204 is fixed to the frame 2, and a guide hole is provided on the positioning pin slide 204 to slide with the positioning pin 203. The axial direction of the positioning pin 203 and the axial direction of the second screw jack 206 are both arranged along the sliding direction of the frame 2. The outer cylinder of the second screw jack 206 is fixed to the frame 2, and the inner rod is connected to the positioning pin 203. The second screw jack 206 can drive the positioning pin 203 to move axially. After the test section is in place, the positioning pin 203 is inserted into the pin hole on the nozzle and the second cannon to position it. In this embodiment, before the test, the frame 2 needs to be moved forward 25mm, with one end close to the nozzle outlet. After the test, before the test section is moved out of the chamber, the frame 2 needs to be moved backward 25mm away from the nozzle outlet. At this time, the other end of the frame 2 is 25mm away from the inlet of the second cannon section.

[0025] It should be noted that the first and second spiral lifts in this embodiment are existing technologies and are capable of extension and retraction. Their structure and principle will not be described in detail in this embodiment.

[0026] The test area cavity wall assembly 3 is disposed within the frame 2 and is slidably connected to the frame 2 along the sliding direction of the frame 2. The test area cavity wall assembly 3 can be moved out of the frame 2. The test area cavity wall assembly 3 is provided with a positioning connector 301, which is detachably connected to the frame 2.

[0027] The test area tunnel wall assembly 3 is a standalone unit and can be moved out of the test section as a whole. The test area tunnel wall assembly 3 includes an upper test area wall panel 304, a lower test area wall panel 305, a side test area wall panel 306, an upper wall frame 307, a lower wall frame 308, and four columns 309, located at the four corners of the upper and lower wall frames 307 and 308, connecting them. The upper test area wall panel 304 is connected to the upper wall frame 307, the lower test area wall panel 305 is connected to the lower wall frame 308, and the side test area wall panel 306 is connected between the upper test area wall panel 304 and the lower test area wall panel 305. Multiple pieces of germanium glass are evenly installed on each of the upper test area wall panel 304, the lower test area wall panel 305, and the side test area wall panel 306. In this embodiment, in order to avoid damaging the germanium glass of the lower wall panel 305 of the test area when installing the model, the test area and the support area are set to be separable. When installing the model, the test area cavity wall assembly 3 can be pulled out of the test section as a whole. After the model is installed, the test area cavity wall assembly 3 is installed back into the test section.

[0028] The frame 2 is equipped with a flat rail 207 and a V-shaped guide rail 208. The bottom ends of the test area tunnel wall assembly 3 are respectively equipped with a flat wheel set 302 that mates with the flat rail 207 and a V-shaped wheel set 303 that mates with the V-shaped guide rail 208. The test area tunnel wall assembly 3 is accurately positioned and locked within the test section through over-positioning via the V-shaped wheel set 303 and the positioning connector 301.

[0029] The support area cavity wall assembly 4 is fixedly disposed at one end within the frame 2 and located on one side of the test area cavity wall assembly 3 along its sliding direction. The test area cavity wall assembly 3 can abut against the support area cavity wall assembly 4. The support area cavity wall assembly 4 includes an upper support area wall panel 401, a lower support area wall panel 402, and a side support area wall panel 403. The upper support area wall panel 401 and the lower support area wall panel 402 are fixedly connected to the frame 2, and the side support area wall panel 403 is fixedly connected to the upper support area wall panel 401 and the lower support area wall panel 402, respectively.

[0030] The model support 5 is a mechanism for supporting the model. The model support 5 includes a base 501 and a semi-curved blade 502. The base 501 is fixedly connected to the frame 1. An arc-shaped slide rail 503 is provided on the base 501. A slider 504, which cooperates with the arc-shaped slide rail 503, is provided at the lower end of the semi-curved blade 502. A second driving mechanism is provided between the base 501 and the semi-curved blade 502 to drive the semi-curved blade 502 to move along the arc-shaped slide rail 503, thereby achieving an angle of attack variation of -15° to 20° for the semi-curved blade. The semi-curved blade 502 movably passes through the bottom of the support area wall assembly 4; the upper end of the semi-curved blade 502 is used to mount the model.

[0031] As the core component, the model support 5 is designed with a semi-curved blade structure in mind, considering that the upper wall panel needs to leave enough space to accommodate a large number of cameras. The model is installed on the upper end of the semi-curved blade 502, which is not connected to the upper wall panel 304 of the test area and does not occupy the space above the upper wall panel 304 of the test area, thus meeting the camera arrangement requirements.

[0032] In some embodiments, the test area side wall panel 306 is provided with a fixed end 310 and a movable part 311, the fixed end 310 and the movable part 311 are hinged together, the fixed end 310 is connected to the test area upper wall panel 304 and the test area lower wall panel 305 respectively, and the end of the movable part 311 away from the fixed end 310 is provided with a wall panel angle adjustment device between it and the column 309.

[0033] Specifically, the wall panel angle adjustment device includes a first connecting seat 312, a second connecting seat 313, an adjusting seat 314, an adjusting screw 315, and an adjusting nut 316. The first connecting seat 312 is fixed to the end of the movable part 311, the second connecting seat 313 is fixed to the column 309, the adjusting seat 314 is hinged to the second connecting seat 313, one end of the adjusting screw 315 is hinged to the first connecting seat 312, and the adjusting nut 316 is threaded to the adjusting screw 315, with one end rotatably connected inside the adjusting seat 314. By rotating the adjusting nut 316, the adjusting nut 316 moves axially on the adjusting screw 315, thereby driving the movable part 311 to adjust the angle of the side wall panel 306 of the test area. In this embodiment, the adjustable range of the wall panel angle is preferably -1° to 1°.

[0034] In some embodiments, three concentric arc-shaped slide rails 503 are provided, with two of them located on one side of the semi-curved blade 502 and the other on the other side. The second drive mechanism is located on the single slide rail side of the semi-curved blade 502. The second drive mechanism includes a worm gear 505, a worm 506, and a fourth motor 507. The worm gear 505 is fixedly connected to the semi-curved blade 502, the worm 506 is rotatably connected to the support 501, and the fourth motor 507 is fixedly connected to the support 501. The output shaft of the fourth motor 507 is drively connected to the worm 506. The fourth motor 507 drives the worm 506 and worm gear 505, thereby driving the semi-curved blade 502 to move along the arc-shaped slide rail 503.

[0035] In some embodiments, the semi-curved blade 502 is symmetrically provided with elastic top wheels on both sides. Each elastic top wheel includes a connecting shaft 508, a top wheel seat 509, a top wheel 510, a disc spring 511, and a mounting nut 512. The bottom of the lower wall panel 402 of the support area is provided with a mounting plate. The connecting shaft 508 is provided with a shoulder 513. One end of the connecting shaft 508 passes through the mounting plate 405 and can be threadedly connected to the mounting nut 512. The disc spring 511 is sleeved on the connecting shaft 508 and abuts against the shoulder and the mounting plate on both sides respectively. The top wheel seat 509 is fixedly connected to the other end of the connecting shaft 508. The top wheel 510 is rotatably connected to the top wheel seat 509 and abuts against the side of the semi-curved blade 502. During installation, the mounting plate and disc spring 511 are positioned between the mounting nut 512 and the shoulder. The preload of the top wheel 510 is adjusted using the mounting nut 512 to achieve the set preload value and ensure consistency of the preload of the top wheels 510 on both sides of the semi-curved blade 502. After adjustment, the mounting nut 512 is removed, allowing the elastic top wheel to move axially along the connecting shaft 508. The top wheel 510 contacts the semi-curved blade 502, providing lateral support under the force of the disc spring 511, thus improving the lateral stiffness of the blade during the blowing process and reducing lateral vibration of the model. Furthermore, the elastic top wheel can move axially along the connecting shaft 508, ensuring that the top wheels 510 on both sides of the blade remain in contact with it, guaranteeing that the blade is supported throughout the entire angular operating range. In this embodiment, two elastic top wheels are provided on each side of the semi-curved blade 502.

[0036] In some embodiments, a blocking plate 404 is detachably connected to the top of the lower wall panel 402 of the support area, and the semi-curved blade 502 moves through the blocking plate 404. When performing a large angle of attack test, the blocking plate 404 needs to be removed to prevent the model connection part at the upper end of the semi-curved blade 502 from colliding with the lower wall panel 402 of the support area.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A 0.6-meter wind tunnel infrared test section, characterized in that, include: The vehicle (1) has a walking mechanism at the bottom, which is mounted on a track (108); A frame (2) is set on the top of the frame (1) and is slidably connected to the frame (1) in a horizontal direction perpendicular to the moving direction of the frame (1). A first driving mechanism for driving the frame (2) to slide is provided between the frame (2) and the frame (1). The frame (2) is provided with positioning pin structures at both ends along its sliding direction for positioning with the nozzle and the second cannon. The test area cave wall assembly (3) is set inside the frame (2) and is slidably connected to the frame (2) along the sliding direction of the frame (2). The test area cave wall assembly (3) can be moved out of the frame (2). The test area cave wall assembly (3) is provided with a positioning connector (301). The positioning connector (301) is detachably connected to the frame (2). The support area cavity wall assembly (4) is fixedly installed inside the frame (2) and located on one side of the test area cavity wall assembly (3) along its sliding direction. The test area cavity wall assembly (3) can abut against the support area cavity wall assembly (4). The model support (5) includes a support (501) and a semi-curved blade (502). The support (501) is fixedly connected to the frame vehicle (1). The support (501) is provided with an arc-shaped slide rail (503). The lower end of the semi-curved blade (502) is provided with a slider (504) that cooperates with the arc-shaped slide rail (503). A second driving mechanism is provided between the support (501) and the semi-curved blade (502) for driving the semi-curved blade (502) to move along the arc-shaped slide rail (503). The semi-curved blade (502) moves through the bottom of the support area hole wall assembly (4). The upper end of the semi-curved blade (502) is used to install the model.

2. The 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The walking mechanism includes two driving wheels (101) and two driven wheels (102). The two driving wheels (101) are respectively located at the bottom corners of one end of the vehicle (1) in the direction of movement, and the two driving wheels (101) are respectively located at the bottom corners of the other end of the vehicle (1) in the direction of movement. Both the driving wheel (101) and the driven wheel (102) include a traveling wheel seat (103), a traveling wheel axle (104), and a traveling wheel body (105). The traveling wheel seat (103) is fixed to the frame (1), the traveling wheel axle (104) is rotatably connected to the traveling wheel seat (103), and the traveling wheel body (105) is fixed on the traveling wheel axle (104). The driving wheel (101) also includes a third motor (106). The housing of the third motor (106) is fixed to the frame (1), and the output shaft is drivenly connected to the traveling wheel axle (104) of the driving wheel (101). The walking mechanism also includes four guide wheels (107), which are symmetrically arranged in pairs on both sides of the frame (1) and are located on the outside of the track (108).

3. The 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The top of the frame (1) is provided with a linear guide rail (109), and the frame (2) slides with the linear guide rail (109). The first driving mechanism includes a first screw jack (202) driven by a first motor (201). The first screw jack (202) is axially arranged along the sliding direction of the frame (2). The outer cylinder of the first screw jack (202) is fixed to the frame (1), and the inner rod is fixed to the frame (2).

4. The 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The positioning pin structure includes a positioning pin (203), a positioning pin slide (204), and a second screw jack (206) driven by a second motor (205). The positioning pin slide (204) is fixed to the frame (2). The positioning pin slide (204) is provided with a guide hole that is slidably connected to the positioning pin (203). The axial direction of the positioning pin (203) and the axial direction of the second screw jack (206) are both arranged along the sliding direction of the frame (2). The outer cylinder of the second screw jack (206) is fixed to the frame (2), and the inner rod is connected to the positioning pin (203).

5. A 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The frame (2) is provided with a flat rail (207) and a V-shaped guide rail (208). The bottom ends of the test area tunnel wall assembly (3) are respectively provided with a flat wheel set (302) that cooperates with the flat rail (207) and a V-shaped wheel set (303) that cooperates with the V-shaped guide rail (208).

6. A 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The test area cave wall assembly (3) includes an upper test area wall panel (304), a lower test area wall panel (305), a side test area wall panel (306), an upper wall frame (307), a lower wall frame (308), and columns (309). There are four columns (309), which are set at the four corners of the upper wall frame (307) and the lower wall frame (308) to connect the upper wall frame (307) and the lower wall frame (308). The upper test area wall panel (304) is connected to the upper wall frame (307), the lower test area wall panel (305) is connected to the lower wall frame (308), and the side test area wall panel (306) is connected between the upper test area wall panel (304) and the lower test area wall panel (305). Multiple pieces of germanium glass are evenly installed on the upper wall panel (304), lower wall panel (305), and side wall panel (306) of the test area.

7. A 0.6-meter wind tunnel infrared test section according to claim 6, characterized in that: The side wall panel (306) of the test area is provided with a fixed end (310) and a movable part (311). The fixed end (310) and the movable part (311) are hinged together. The fixed end (310) is connected to the upper wall panel (304) and the lower wall panel (305) of the test area respectively. The end of the movable part (311) away from the fixed end (310) is provided with a wall panel angle adjustment device between it and the column (309). The wall panel angle adjustment device includes a first connecting seat (312), a second connecting seat (313), an adjusting seat (314), an adjusting screw (315), and an adjusting nut (316). The first connecting seat (312) is fixed to the end of the movable part (311), the second connecting seat (313) is fixed to the column (309), the adjusting seat (314) is hinged to the second connecting seat (313), one end of the adjusting screw (315) is hinged to the first connecting seat (312), and the adjusting nut (316) is threaded to the adjusting screw (315) and one end is rotatably connected inside the adjusting seat (314).

8. A 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The three arc-shaped slide rails (503) are arranged concentrically, with two of the arc-shaped slide rails located on one side of the semi-curved blade (502) and the other arc-shaped slide rail located on the other side of the semi-curved blade (502). The second drive mechanism is located on the single slide rail side of the semi-curved cutter (502). The second drive mechanism includes a worm wheel (505), a worm (506) and a fourth motor (507). The worm wheel (505) is fixedly connected to the semi-curved cutter (502), the worm (506) is rotatably connected to the support (501), the fourth motor (507) is fixed to the support (501), and the output shaft of the fourth motor (507) is drively connected to the worm (506).

9. A 0.6-meter wind tunnel infrared test section according to claim 1, characterized in that: The support area cavity wall assembly (4) includes an upper support area wall panel (401), a lower support area wall panel (402), and a side support area wall panel (403). The upper support area wall panel (401) and the lower support area wall panel (402) are fixedly connected to the frame (2), and the side support area wall panel (403) is fixedly connected to the upper support area wall panel (401) and the lower support area wall panel (402), respectively. A blocking plate (404) is detachably connected to the top of the lower support area wall panel (402), and the semi-curved blade (502) moves through the blocking plate (404).

10. A 0.6-meter wind tunnel infrared test section according to claim 9, characterized in that: The semi-curved blade (502) is symmetrically provided with elastic top wheels on both sides. The elastic top wheel includes a connecting shaft (508), a top wheel seat (509), a top wheel (510), a disc spring (511), and a mounting nut (512). The bottom of the lower wall panel (402) of the bracket area is provided with a mounting plate (405). The connecting shaft (508) is provided with a shoulder (513). One end of the connecting shaft (508) passes through the mounting plate and can be threadedly connected to the mounting nut (512). The disc spring (511) is sleeved on the connecting shaft (508) and abuts against the shoulder and the mounting plate on both sides respectively. The top wheel seat (509) is fixedly connected to the other end of the connecting shaft (508). The top wheel (510) is rotatably connected to the top wheel seat (509) and abuts against the side of the semi-curved blade (502).

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