An infrared test section for a 0.6 meter wind tunnel

Abstract

The application provides a 0.6-meter wind tunnel infrared test section, comprising: a trolley; a frame arranged on the top of the trolley and in sliding connection with the trolley, the frame being provided with positioning pin structures at both ends; a test area tunnel wall assembly arranged in the frame and in sliding connection with the frame, the test area tunnel wall assembly being capable of being moved out of the frame, the test area tunnel wall assembly being provided with a positioning connector connected with the frame; a support area tunnel wall assembly fixedly arranged in the frame; a model support comprising a support base and a half-bent knife, the support base being fixedly connected with the trolley; the half-bent knife being movably arranged through the bottom of the support area tunnel wall assembly; and the upper end of the half-bent knife being used for mounting a model. In the application, the test area tunnel wall assembly can be moved out of the test section, thereby avoiding damage to the germanium glass of the lower wall plate of the test area during installation of the model; the model support adopts a half-bent knife form, the upper end of the half-bent knife is not connected with the upper wall plate of the test area, does not occupy the space above the upper wall plate of the test area, meets the camera arrangement requirement, and is suitable for wind tunnel infrared test.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind tunnel test technology, and particularly relates to an infrared test section of a 0.6-meter scale transonic wind tunnel. BACKGROUND

[0002] With the continuous improvement of the flight speed of fighter aircraft, infrared detection and infrared stealth have become important research contents of supersonic aircraft. In recent years, China has made more basic research and progress in infrared stealth and detection, but the research on the long-wave infrared radiation of aircraft skin is mainly numerical calculation, and lacks accurate experimental verification.

[0003] Wind tunnel test is one of the basic methods of ground research and verification of aircraft. As a key section of the wind tunnel, the test section provides support, background environment and measurement instrument observation conditions (windows) for the test model. The flow field quality and function of the test section are important guarantees for obtaining reliable results of the wind tunnel test. In order to meet the above infrared test requirements, a special infrared test section needs to be designed. SUMMARY

[0004] The present application provides a 0.6-meter wind tunnel infrared test section to solve the problems in the prior art and is suitable for wind tunnel infrared test.

[0005] To achieve the above purpose, the present application realizes the following technical scheme:

[0006] A 0.6-meter wind tunnel infrared test section comprises:

[0007] A trolley is provided with a walking mechanism at the bottom, and the walking mechanism is installed on a track;

[0008] A frame is arranged on the top of the trolley and is slidably connected with the trolley in a horizontal direction perpendicular to the moving direction of the trolley, a first driving mechanism for driving the sliding of the frame is arranged between the frame and the trolley, and positioning pin structures are arranged at both ends of the frame along the sliding direction of the frame for positioning with a nozzle and a second nozzle.

[0009] A test area tunnel wall assembly is arranged in the frame and is slidably connected with the frame along the sliding direction of the frame, the test area tunnel wall assembly can be moved out of the frame, and a positioning connecting piece is arranged on the test area tunnel wall assembly and detachably connected with the frame.

[0010] A support area tunnel wall assembly is fixedly arranged in the frame and located on one side of the test area tunnel wall assembly along the sliding direction of the test area tunnel wall assembly, and the test area tunnel wall assembly can abut against the support area tunnel wall assembly.

[0011] The model support comprises a support and a half-bent knife, the support is fixedly connected with the frame, the support is provided with an arc-shaped sliding rail, the lower end of the half-bent knife is provided with a sliding block matched with the arc-shaped sliding rail, and the support and the half-bent knife are provided with a second driving mechanism for driving the half-bent knife to move along the arc-shaped sliding rail; the half-bent knife moves through the bottom of the support area hole wall assembly; and the upper end of the half-bent knife is used for mounting a model.

[0012] Preferably, the walking mechanism comprises two driving wheels and two driven wheels, the two driving wheels are arranged at two corners of the bottom of one end of the frame in the moving direction, and the two driving wheels are arranged at two corners of the bottom of the other end of the frame in the moving direction.

[0013] The driving wheel and the driven wheel each comprise a walking wheel base, a walking wheel shaft and a walking wheel body, the walking wheel base is fixed with the frame, the walking wheel shaft is rotationally connected with the walking wheel base, and the walking wheel body is fixed on the walking wheel shaft; the driving wheel further comprises a third motor, the shell of the third motor is fixed with the frame, and the output shaft is in transmission connection with the walking wheel shaft of the driving wheel.

[0014] The walking mechanism further comprises four guide wheels, the four guide wheels are symmetrically arranged on two sides of the frame, and the guide wheels are arranged outside the track.

[0015] Preferably, the top of the frame is provided with a linear guide rail, the frame is in sliding cooperation with the linear guide rail, the first driving mechanism comprises a first screw lifter driven by a first motor, the first screw lifter is arranged in the sliding direction of the frame, and the outer cylinder of the first screw lifter is fixed with the frame and the inner rod is fixed with the frame.

[0016] Preferably, the positioning pin structure comprises a positioning pin, a positioning pin sliding seat and a second screw lifter driven by a second motor, the positioning pin sliding seat is fixed with the frame, the positioning pin sliding seat is provided with a guide hole in sliding connection with the positioning pin, the axial direction of the positioning pin and the axial direction of the second screw lifter are arranged in the sliding direction of the frame, the outer cylinder of the second screw lifter is fixed with the frame and the inner rod is connected with the positioning pin.

[0017] Preferably, the frame is provided with a flat rail and a V-shaped guide rail, the bottom of the test area hole wall assembly is provided with a flat wheel set matched with the flat rail and a V-shaped wheel set matched with the V-shaped guide rail.

[0018] Preferably, the test area hole wall assembly comprises a test area upper wall plate, a test area lower wall plate, a test area side wall plate, an upper wall frame, a lower wall frame and a column, the column is four, arranged at the four corners of the upper wall frame and the lower wall frame, connecting the upper wall frame and the lower wall frame, the test area upper wall plate is connected with the upper wall frame, the test area lower wall plate is connected with the lower wall frame, and the test area side wall plate is connected between the test area upper wall plate and the test area lower wall plate.

[0019] The test area upper wall plate, the test area lower wall plate and the test area side wall plate are respectively and uniformly provided with a plurality of germanium glass plates.

[0020] Preferably, the test area side wall plate is provided with a fixed end and a movable part, the fixed end and the movable part are hinged, the fixed end is connected with the test area upper wall plate and the test area lower wall plate respectively, and a wall plate angle adjusting device is arranged between the end of the movable part away from the fixed end and the column.

[0021] The wall plate angle adjusting device comprises a first connecting seat, a second connecting seat, an adjusting seat, an adjusting screw and an adjusting nut, the first connecting seat is fixed at the end of the movable part, the second connecting seat is fixed on the column, the adjusting seat is hinged with the second connecting seat, one end of the adjusting screw is hinged with the first connecting seat, the adjusting nut is threadedly connected with the adjusting screw, and one end is rotationally connected in the adjusting seat.

[0022] Preferably, the arc-shaped slide rail is three concentrically arranged, two of which are located on one side of the half bending knife, and the other one is located on the other side of the half bending knife.

[0023] The second driving mechanism is located on the single slide rail side of the half bending knife, and the second driving mechanism comprises a worm wheel, a worm and a fourth motor, the worm wheel is fixedly connected with the half bending knife, the worm is rotationally connected with the support, the fourth motor is fixed with the support, and the output shaft of the fourth motor is in transmission connection with the worm.

[0024] Preferably, the support area hole wall assembly comprises a support area upper wall plate, a support area lower wall plate and a support area side wall plate, the support area upper wall plate and the support area lower wall plate are respectively fixedly connected with the frame, and the support area side wall plate is fixedly connected with the support area upper wall plate and the support area lower wall plate; a blocking plate is detachably connected to the top of the support area lower wall plate, and the half bending knife passes through the blocking plate.

[0025] Preferably, the half-bent knife is symmetrically provided with elastic top wheels on both sides, the elastic top wheel comprises a connecting shaft, a top wheel seat, a top wheel, a disc spring and a mounting nut, the lower wall plate bottom of the support area is provided with a mounting plate, the connecting shaft is provided with a shaft shoulder, one end of the connecting shaft penetrates through the mounting plate and can be threadedly connected with the mounting nut, the disc spring is sleeved on the connecting shaft and abuts against the shaft shoulder and the mounting plate on both sides, the top wheel seat is fixedly connected with the other end of the connecting shaft, and the top wheel is rotatably connected on the top wheel seat and abuts against the side surface of the half-bent knife.

[0026] Compared with the prior art, the present application has the beneficial effects that:

[0027] The test area and the support area are in a separated form, the test area hole wall assembly can be integrally drawn out from the test section when installing the model, the test area hole wall assembly is installed into the test section after the model is installed, the germanium glass of the lower wall plate of the test area is prevented from being damaged during the installation of the model, the model support adopts the half-bent knife structure form, the half-bent knife upper end is installed with the model and is not connected with the upper wall plate of the test area, the space above the upper wall plate of the test area is not occupied, the camera arrangement requirement is met, and the present application is suitable for the infrared test of the wind tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a whole structure schematic view from one perspective of the present application;

[0029] Figure 2 It is a whole structure schematic view from another perspective of the present application;

[0030] Figure 3 It is a structure schematic view from one perspective of the trolley and the frame in the present application;

[0031] Figure 4 It is a structure schematic view from another perspective of the trolley and the frame in the present application;

[0032] Figure 5 It is a structure schematic view from one perspective of the test area hole wall assembly in the present application;

[0033] Figure 6 It is a structure schematic view that the test area hole wall assembly is moved out from the frame in the present application;

[0034] Figure 7 It is a structure schematic view from another perspective of the test area hole wall assembly in the present application;

[0035] Figure 8 It is a structure schematic view of the test area side wall plate in the present application;

[0036] Figure 9 It is a structure schematic view of the wall plate angle adjusting device in the present application;

[0037] Figure 10 The schematic diagram of the overall structure of the model support in the present application;

[0038] Figure 11 The schematic diagram of the partial structure of the model support in the present application;

[0039] Figure 12 The schematic diagram of the structure of the worm connecting with the half-bent knife in the present application;

[0040] Figure 13 The schematic diagram of the structure of the worm connecting with the support in the present application;

[0041] Figure 14 The schematic diagram of the structure of the elastic top wheel cooperating with the half-bent knife in the present application;

[0042] Figure 15 The schematic diagram of the structure of the support area hole wall assembly in the present application.

[0043] Explanation of reference signs

[0044] 1 - frame, 101 - driving wheel, 102 - driven wheel, 103 - walking wheel seat, 104 - walking wheel shaft, 105 - walking wheel body, 106 - third motor, 107 - guide wheel, 108 - track, 109 - linear guide rail;

[0045] 2 - frame, 201 - first motor, 202 - first screw elevator, 203 - positioning pin, 204 - positioning pin sliding seat, 205 - second motor, 206 - second screw elevator, 207 - flat rail, 208 - V-shaped guide rail;

[0046] 3 - test area hole wall assembly, 301 - positioning connecting piece, 302 - flat wheel group, 303 - V-shaped wheel group, 304 - test area upper wall plate, 305 - test area lower wall plate, 306 - test area side wall plate, 307 - upper wall frame, 308 - lower wall frame, 309 - stand column, 310 - fixed end, 311 - movable part, 312 - first connecting seat, 313 - second connecting seat, 314 - adjusting seat, 315 - adjusting screw, 316 - adjusting nut;

[0047] 4 - support area hole wall assembly, 401 - support area upper wall plate, 402 - support area lower wall plate, 403 - support area side wall plate, 404 - blocking plate, 405 - mounting plate;

[0048] 5 - model support, 501 - support, 502 - half-bent knife, 503 - arc-shaped sliding rail, 504 - sliding block, 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 - shaft shoulder. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Specifically, the frame 1 is provided with a linear guide rail 109, the frame 2 is in sliding fit with the linear guide rail 109, the first driving mechanism comprises a first screw lifter 202 driven by a first motor 201, the first screw lifter 202 is arranged in the sliding direction of the frame 2, and the outer cylinder of the first screw lifter 202 is fixed with the frame 1 and the inner rod is fixed with the frame 2. Through the linear guide rail 109 and the first driving mechanism, the frame 2 can be moved relative to the frame 1.

[0055] The positioning pin structure comprises a positioning pin 203, a positioning pin sliding seat 204, and a second screw lifter 206 driven by a second motor 205, the positioning pin sliding seat 204 is fixed with the frame 2, the positioning pin sliding seat 204 is provided with a guide hole in sliding connection with the positioning pin 203, the positioning pin 203 and the second screw lifter 206 are both arranged in the sliding direction of the frame 2, the outer cylinder of the second screw lifter 206 is fixed with the frame 2 and the inner rod is connected with the positioning pin 203. The second screw lifter 206 can drive the positioning pin 203 to move axially, after the test section is positioned, the positioning pin 203 is inserted into the pin hole on the nozzle and the second-pass duct to position the nozzle and the second-pass duct. In the embodiment, before the test, the frame 2 needs to be moved forward by 25 mm, one end approaches the nozzle outlet, after the test, the frame 2 needs to be moved backward by 25 mm away from the nozzle outlet, and at this time, the other end of the frame 2 is 25 mm away from the entrance of the second-pass duct.

[0056] It should be noted that the first and second screw lifters in the embodiment are prior art and can be telescopic, and the structure and principle thereof will not be described in detail in the embodiment.

[0057] The test area hole wall assembly 3 is arranged in the frame 2 and is in sliding connection with the frame 2 in the sliding direction of the frame 2, the test area hole wall assembly 3 can be moved out of the frame 2, the test area hole wall assembly 3 is provided with a positioning connector 301, and the positioning connector 301 is detachably connected with the frame 2.

[0058] The test area tunnel wall assembly 3 can be removed as a whole from the test section. The test area tunnel wall assembly 3 comprises a test area upper wall plate 304, a test area lower wall plate 305, a test area side wall plate 306, an upper wall frame 307, a lower wall frame 308, and four vertical columns 309. The vertical columns 309 are arranged at the four corners of the upper wall frame 307 and the lower wall frame 308, and connect the upper wall frame 307 and the lower wall frame 308. The test area upper wall plate 304 is connected to the upper wall frame 307, and the test area lower wall plate 305 is connected to the lower wall frame 308. The test area side wall plate 306 is connected between the test area upper wall plate 304 and the test area lower wall plate 305. A plurality of germanium glasses are evenly arranged on the test area upper wall plate 304, the test area lower wall plate 305, and the test area side wall plate 306. In this embodiment, in order to avoid damaging the germanium glasses of the test area lower wall plate 305 during installation of the model, the test area and the support area are arranged in a separable form. During installation of the model, the test area tunnel wall assembly 3 can be removed from the test section as a whole. After the model is installed, the test area tunnel wall assembly 3 is installed into the test section.

[0059] The frame 2 is provided with a flat rail 207 and a V-shaped rail 208. The test area tunnel wall assembly 3 is provided with a flat wheel set 302 at both ends of the bottom thereof, which cooperates with the flat rail 207, and a V-shaped wheel set 303, which cooperates with the V-shaped rail 208. The V-shaped wheel set 303 and the positioning connecting piece 301 are used to realize accurate positioning and locking of the test area tunnel wall assembly 3 in the test section.

[0060] The support area tunnel wall assembly 4 is fixedly arranged in one end of the frame 2 and located on one side of the test area tunnel wall assembly 3 along the sliding direction thereof. The test area tunnel wall assembly 3 can abut against the support area tunnel wall assembly 4. The support area tunnel wall assembly 4 comprises a support area upper wall plate 401, a support area lower wall plate 402, and a support area side wall plate 403. The support area upper wall plate 401 and the support area lower wall plate 402 are fixedly connected to the frame 2. The support area side wall plate 403 is fixedly connected to the support area upper wall plate 401 and the support area lower wall plate 402.

[0061] The model support 5 is a mechanism for supporting the model. The model support 5 comprises a support base 501 and a half-curved knife 502. The support base 501 is fixedly connected to the frame 2. The support base 501 is provided with an arc-shaped sliding rail 503. The lower end of the half-curved knife 502 is provided with a sliding block 504, which cooperates with the arc-shaped sliding rail 503. A second driving mechanism is arranged between the support base 501 and the half-curved knife 502, which is used to drive the half-curved knife 502 to move along the arc-shaped sliding rail 503, so as to realize an attack angle change of the half-curved knife in a range of -15° to 20°. The half-curved knife 502 movably penetrates through the bottom of the support area tunnel wall assembly 4. The upper end of the half-curved knife 502 is used to install the model.

[0062] The model support 5 is a core component. In order to arrange more cameras, a sufficient space is required on the upper wall plate. Therefore, a half-bent knife structure is adopted in the embodiment. The upper end of the half-bent knife 502 is mounted with a model and is not connected with the upper wall plate 304 of the test area, so as not to occupy the space above the upper wall plate 304 of the test area and meet the arrangement requirement of the cameras.

[0063] In some embodiments, the test area side wall plate 306 is provided with a fixed end 310 and a movable part 311. The fixed end 310 and the movable part 311 are hinged. The fixed end 310 is connected with the upper wall plate 304 and the lower wall plate 305 of the test area respectively. The end of the movable part 311 away from the fixed end 310 is provided with a wall plate angle adjusting device between the movable part 311 and the stand 309.

[0064] Specifically, the wall plate angle adjusting 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 at the end of the movable part 311. The second connecting seat 313 is fixed on the stand 309. The adjusting seat 314 is hinged with the second connecting seat 313. One end of the adjusting screw 315 is hinged with the first connecting seat 312. The adjusting nut 316 is threadedly connected with the adjusting screw 315 and is rotatably connected at one end in 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 and adjusting the angle of the test area side wall plate 306. In the embodiment, the adjustable range of the wall plate angle is preferably -1° to 1°.

[0065] In some embodiments, the arc-shaped slide rails 503 are three concentrically arranged. Two of the arc-shaped slide rails are located on one side of the half-bent knife 502, and the other arc-shaped slide rail is located on the other side of the half-bent knife 502. The second driving mechanism is located on the single slide rail side of the half-bent knife 502. The second driving mechanism includes a worm gear 505, a worm shaft 506 and a fourth motor 507. The worm gear 505 is fixedly connected with the half-bent knife 502. The worm shaft 506 is rotatably connected with the support 501. The fourth motor 507 is fixed with the support 501. The output shaft of the fourth motor 507 is in transmission connection with the worm shaft 506. The fourth motor 507 drives the worm shaft 506, the worm gear 505 and the half-bent knife 502, so that the half-bent knife 502 moves along the arc-shaped slide rail 503.

[0066] In some embodiments, the half-curved knife 502 is symmetrically provided with elastic top wheels on both sides, the elastic top wheels comprising a connecting shaft 508, a top wheel seat 509, a top wheel 510, a disc spring 511 and a mounting nut 512, the bracket area lower wall plate 402 is provided with a mounting plate at the bottom, the connecting shaft 508 is provided with a shaft shoulder 513, one end of the connecting shaft 508 penetrates through the mounting plate 405 and can be threadedly connected with the mounting nut 512, the disc spring 511 is sleeved on the connecting shaft 508 and abuts against the shaft shoulder and the mounting plate on both sides, the top wheel seat 509 is fixedly connected with the other end of the connecting shaft 508, and the top wheel 510 is rotatably connected with the top wheel seat 509 and abuts against the side surface of the half-curved knife 502. During installation, the mounting plate and the disc spring 511 are located between the mounting nut 512 and the shaft shoulder, the pre-tightening force of the top wheel 510 is adjusted through the mounting nut 512, so as to reach the pre-tightening force setting value and the consistency of the pre-tightening force of the top wheels 510 on both sides of the half-curved knife 502. After adjustment, the mounting nut 512 is disassembled, at this time, the elastic top wheel can move axially along the connecting shaft 508. The top wheel 510 contacts the half-curved knife 502 and realizes lateral support of the half-curved knife 502 under the action of the disc spring 511, improves the lateral rigidity in the blowing process of the curved knife, and thus reduces the lateral shaking of the model. Moreover, the elastic top wheel can move axially along the connecting shaft 508, the top wheels 510 on both sides of the curved knife are always in contact with the curved knife, and it is ensured that the curved knife can be supported in the whole angle operating range. In this embodiment, two elastic top wheels are arranged on each side of the half-curved knife 502.

[0067] In some embodiments, the bracket area lower wall plate 402 is detachably connected with a blocking plate 404 at the top, and the half-curved knife 502 penetrates through the blocking plate 404. When the large attack angle test is performed, the blocking plate 404 needs to be disassembled to avoid collision between the model connecting part at the upper end of the half-curved knife 502 and the bracket area lower wall plate 402.

[0068] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An infrared test section for a 0.6 meter wind tunnel, characterized in that, The utility model relates to a kind of test device for testing the performance of nozzle, including: Frame car (1), bottom is equipped with walking mechanism, the walking mechanism is installed on track (108); Frame (2) is set on the top of the frame car (1), and is slidably connected with the frame car (1) along the horizontal direction perpendicular to the moving direction of the frame car (1), and the first drive mechanism for driving the frame (2) to slide is equipped between the frame (2) and frame car (1);The frame (2) is respectively equipped with positioning pin structure at both ends along its sliding direction, for positioning with nozzle and two rows of roads; Test area hole wall component (3) is set in the frame (2), and is slidably connected with the frame (2) along the sliding direction of the frame (2), the test area hole wall component (3) can be removed from the frame (2), and the positioning connecting piece (301) is provided on the test area hole wall component (3), and the positioning connecting piece (301) is detachably connected with the frame (2); Support area hole wall component (4) is fixedly arranged in the frame (2), and is located at one side of the test area hole wall component (3) along its sliding direction, and the test area hole wall component (3) can be abutted with the support area hole wall component (4); Model support (5) includes support (501) and half bending knife (502), the support (501) is fixedly connected with the frame car (1), the arc-shaped slide rail (503) is provided on the support (501), the lower end of the half bending knife (502) is provided with the sliding block (504) matched with the arc-shaped slide rail (503), and the second drive mechanism for driving the half bending knife (502) to move along the arc-shaped slide rail (503) is arranged between the support (501) and the half bending knife (502);The half bending knife (502) passes through the bottom of the support area hole wall component (4) movably;The upper end of the half bending knife (502) is used for installing model.

2. An infrared test section for a 0.6 meter wind tunnel according to claim 1, characterized in that: The walking mechanism includes two driving wheels (101) and two driven wheels (102), two driving wheels (101) are respectively arranged at two corners of the bottom of one end of the frame car (1) in the moving direction, and two driving wheels (101) are respectively arranged at two corners of the bottom of the other end of the frame car (1) in the moving direction; The driving wheel (101) and the driven wheel (102) all include walking wheel seat (103), walking wheel shaft (104) and walking wheel body (105), the walking wheel seat (103) is fixed with the frame car (1), the walking wheel shaft (104) is rotatably connected with the walking wheel seat (103), and the walking wheel body (105) is fixed on the walking wheel shaft (104);The third motor (106) is further included in the driving wheel (101), the shell of the third motor (106) is fixed with the frame car (1), and the output shaft is drivingly connected with the walking wheel shaft (104) of the driving wheel (101); The walking mechanism further includes four guide wheels (107), and the four guide wheels (107) are symmetrically arranged on both sides of the frame car (1), and the guide wheels (107) are arranged outside the track (108).

3. An infrared test section for a 0.6 meter wind tunnel as defined in claim 1, wherein: The frame vehicle (1) top is equipped with linear guide rail (109), the frame (2) and linear guide rail (109) sliding fit, the first drive mechanism includes by first motor (201) driven first screw elevator (202), the first screw elevator (202) axial along the frame (2) sliding direction setting, the outer tube of first screw elevator (202) is fixed with frame vehicle (1), inner rod is fixed with frame (2).

4. An infrared test section for a 0.6 meter wind tunnel according to claim 1, wherein: The positioning pin structure includes a positioning pin (203), a positioning pin sliding seat (204), and a second screw elevator (206) driven by a second motor (205). The positioning pin sliding seat (204) is fixed with the frame (2), and the positioning pin sliding seat (204) is provided with a guide hole in sliding connection with the positioning pin (203). The positioning pin (203) and the second screw elevator (206) are both arranged in the sliding direction of the frame (2). The outer tube of the second screw elevator (206) is fixed with the frame (2), and the inner rod is connected with the positioning pin (203).

5. An infrared test section for a 0.6 meter wind tunnel as defined in claim 1, wherein: The frame (2) is provided with a flat rail (207) and a V-shaped guide rail (208). The bottom of the test area wall assembly (3) is provided with a flat wheel group (302) matched with the flat rail (207) and a V-shaped wheel group (303) matched with the V-shaped guide rail (208).

6. An infrared test section for a 0.6 meter wind tunnel as defined in claim 1, wherein: The test area wall assembly (3) includes a test area upper wall plate (304), a test area lower wall plate (305), a test area side wall plate (306), an upper wall frame (307), a lower wall frame (308), and a stand column (309). The stand column (309) is provided at 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 test area upper wall plate (304) is connected with the upper wall frame (307), the test area lower wall plate (305) is connected with the lower wall frame (308), and the test area side wall plate (306) is connected between the test area upper wall plate (304) and the test area lower wall plate (305). The test area upper wall plate (304), the test area lower wall plate (305), and the test area side wall plate (306) are respectively and uniformly provided with a plurality of germanium glass plates.

7. An infrared test section for a 0.6 meter wind tunnel as defined in claim 6, wherein: The test area side wall plate (306) is provided with a fixed end (310) and a movable part (311). The fixed end (310) and the movable part (311) are hinged. The fixed end (310) is connected with the test area upper wall plate (304) and the test area lower wall plate (305), respectively. The wall plate angle adjusting device is arranged between the end of the movable part (311) away from the fixed end (310) and the stand column (309). The wallboard angle adjusting device comprises 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 at the end of the movable part (311), the second connecting seat (313) is fixed on the stand (309), the adjusting seat (314) is hinged with the second connecting seat (313), one end of the adjusting screw (315) is hinged with the first connecting seat (312), the adjusting nut (316) is in threaded connection with the adjusting screw (315), and one end is rotationally connected inside the adjusting seat (314).

8. An infrared test section for a 0.6 meter wind tunnel as defined in claim 1 wherein: The arc-shaped slide rails (503) are concentrically arranged in three, two of which are located on one side of the half-bending cutter (502), and the other is located on the other side of the half-bending cutter (502); The second driving mechanism is located on the single slide rail side of the half-bending cutter (502), and comprises a worm gear (505), a worm (506) and a fourth motor (507), the worm gear (505) is fixedly connected with the half-bending cutter (502), the worm (506) is rotationally connected with the support (501), and the fourth motor (507) is fixed with the support (501), and the output shaft of the fourth motor (507) is in transmission connection with the worm (506).

9. An infrared test section for a 0.6 meter wind tunnel as defined in claim 1 wherein: The bracket area hole wall assembly (4) comprises a bracket area upper wall plate (401), a bracket area lower wall plate (402) and a bracket area side wall plate (403), the bracket area upper wall plate (401) and the bracket area lower wall plate (402) are fixedly connected with the frame (2) respectively, and the bracket area side wall plate (403) is fixedly connected with the bracket area upper wall plate (401) and the bracket area lower wall plate (402) respectively; a blocking plate (404) is detachably connected to the top of the bracket area lower wall plate (402), and the half-bending cutter (502) passes through the blocking plate (404) movably.

10. An infrared test section for a 0.6 meter wind tunnel as defined in claim 9, wherein: The half-bending cutter (502) is symmetrically provided with elastic top wheels on both sides, the elastic top wheel comprises a connecting shaft (508), a top wheel seat (509), a top wheel (510), a disc spring (511) and a mounting nut (512), the bracket area lower wall plate (402) is provided with a mounting plate (405) at the bottom, the connecting shaft (508) is provided with a shaft shoulder (513), one end of the connecting shaft (508) penetrates through the mounting plate and can be in threaded connection with the mounting nut (512), the disc spring (511) is sleeved on the connecting shaft (508) and abuts against the shaft shoulder and the mounting plate on both sides, the top wheel seat (509) is fixedly connected with the other end of the connecting shaft (508), and the top wheel (510) is rotationally connected on the top wheel seat (509) and abuts against the side surface of the half-bending cutter (502).

Images