A wind tunnel static pressure test fixture and wind tunnel

Abstract

The present invention belongs to the technical field of aerodynamic test, and specifically provides a wind tunnel static pressure test fixture and a wind tunnel. The wind tunnel static pressure test fixture includes two rotating drive members, two first frames, two inclination adjustment assemblies and two fixing assemblies. The two rotating drive members are respectively fixed to the top wall and the bottom wall of the wind tunnel body, and can respectively drive the two first frames to rotate around the same axis. The two inclination adjustment assemblies are respectively arranged on the two first frames, and the inclination adjustment assemblies can not only move along the first slide groove on the first frame, but also adjust the height of the second frame. By changing the horizontal and height positions of the second frame, the posture adjustment of the model from horizontal to inclined and then to vertical can be achieved. When the inclination angle of the model remains unchanged, the two rotating drive members can also be controlled to rotate synchronously to simulate the wind load conditions of the model under different wind attack angles, thereby improving the accuracy of the test results and providing a theoretical basis for engineering structure design.

Description

Technical Field

[0001] The invention belongs to the technical field of aerodynamic tests, and in particular relates to a wind tunnel static pressure test fixture and a wind tunnel. Background Art

[0002] A wind tunnel is an aerodynamic test device that can form a uniform wind field inside. When conducting aerodynamic tests, objects such as bridge segment models, cable segment models, car models, and photovoltaic panel models can be placed in the wind tunnel to study the wind loads on the objects and provide a basis for engineering structure design. For bridge design, with the increase in the number of large-span cable-stayed bridges in China, the wind-induced vibration and wind load problems of cable-stayed bridges have also become prominent. As the main load-bearing component of a cable-stayed bridge, the stability of the cable directly affects the safety and service life of the bridge. Therefore, accurately obtaining the wind load and wind pressure distribution characteristics of the cable is of great significance to the design of the cable and the main beam.

[0003] During the design stage of a cable-stayed bridge, it is necessary to test and evaluate the wind pressure and wind load of the cable segment model through wind tunnel tests to determine which aerodynamic shape can effectively reduce the wind load. If it is a parallel double-cable or multi-cable structure, it is necessary to obtain the interference effect of the double cables through force or pressure tests, and then reasonably design the spacing between the parallel cables.

[0004] In the prior art, when the wind pressure test is performed on the cable segment model, the cable segment model is generally fixed horizontally in the wind tunnel, and the wind direction it is subjected to is also unchanged. However, in actual application scenarios, the cable is inclined, and there may be a parallel double cable or multiple cable arrangement, and it will be affected by the incoming wind at different angles. The wind tunnel test device in the prior art cannot accurately simulate the actual working environment of the cable, resulting in deviations in the test results. Summary of the invention

[0005] The embodiment of the present invention provides a wind tunnel static pressure test fixture and a wind tunnel, aiming to solve the problem that the wind tunnel test model in the prior art cannot accurately simulate the wind load conditions of the model under different installation inclination angles and wind attack angles, resulting in deviations in the test results.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] In a first aspect, the present invention provides a wind tunnel static pressure test fixture, comprising:

[0008] Two rotary drive members, used to be respectively mounted on the top wall and the bottom wall of the wind tunnel body, and the rotation axes of the two rotary drive members are coaxially arranged;

[0009] Two first frames, respectively arranged on the two rotating driving members, the first frames having horizontal first sliding grooves;

[0010] Two inclination adjustment assemblies, respectively disposed on the two first frames, the inclination adjustment assemblies comprising a lifting drive mechanism and a second frame, the second frame being disposed on one side of the two first frames adjacent to each other, the lifting drive mechanism being movably disposed on the corresponding first slide slot for driving the second frame to move up and down; and

[0011] Two fixing components are respectively arranged on the two second frames, and the fixing components include a mounting plate and a clamp. The mounting plate is rotatably matched with the corresponding second frame, and the rotation axis of the mounting plate is perpendicular to the length direction of the first slide groove. The mounting plate is provided with a mounting groove along the direction of its own rotation axis. The clamp is movably arranged in the mounting groove, and the clamps on the two fixing components are respectively used to connect with the two ends of the model.

[0012] In a possible implementation, the rotary drive member includes:

[0013] A support frame, arranged on the top wall or the bottom wall of the wind tunnel body;

[0014] A track is annular, the track is arranged on the support frame, and the first frame is slidably matched with the track; and

[0015] The turntable is arranged on the supporting frame and is used for driving the first frame to rotate around a vertical axis.

[0016] In a possible implementation, the inner circumferential wall and the outer circumferential wall of the track are respectively provided with a second slide groove along the circumferential direction thereof, the cross section of the second slide groove is T-shaped, and the first frame is provided with a moving mechanism that slides with the track, and the moving mechanism includes:

[0017] Two support plates are spaced apart from each other on the first frame, and the track passes through a space formed between the two support plates;

[0018] Two first sliding members, respectively disposed on the two support plates, the first sliding member passes through the corresponding support plates, one end of the first sliding member extends into the second slide groove and has a first stopper to prevent the first sliding member from escaping from the second slide groove, and the other end of the first sliding member has an external thread; and

[0019] Two first locking nuts are respectively arranged on the two first sliding members, and the first locking nuts are threadedly matched with one end of the corresponding first sliding member having an external thread.

[0020] In a possible implementation, the first frame is provided with a plurality of first slide grooves at intervals along the axial direction of the mounting plate, and the second frame is provided with a plurality of third slide grooves at intervals along the axial direction of the mounting plate, and the third slide grooves are parallel to the first slide grooves;

[0021] The lifting drive mechanism includes a plurality of adjusting rod groups corresponding one by one to the first slide grooves, each of the adjusting rod groups includes two adjusting rod bodies, one end of the two adjusting rod bodies are movably arranged on the first slide grooves, and the other ends of the two adjusting rod bodies are coaxially hinged to each other and can move along the third slide groove.

[0022] In a possible implementation, a locking unit is provided at the end of each adjusting rod body, and the locking unit includes:

[0023] a second sliding member, which is arranged through the end of the adjusting rod body, one end of which is slidably matched with the corresponding first slide groove or the second slide groove, and has a second stopper to prevent the adjusting rod body from escaping from the corresponding first slide groove or the second slide groove, and the other end of the second sliding member has an external thread; and

[0024] The second locking nut is threadably matched with one end of the second sliding member having an external thread.

[0025] In a possible implementation, a plurality of the clamps are provided along the length direction of the mounting groove.

[0026] In a possible implementation, the clamp includes a moving part and an installation part, the moving part is slidably matched with the installation groove, the installation part has a receiving hole for accommodating the end of the model, the side wall of the receiving hole is provided with a locking hole, the inner thread of the locking hole is matched with a set screw, and the screw end of the set screw abuts against the model.

[0027] In a possible implementation, the fixing assembly further includes a third locking member for fixing the clamp in the mounting groove.

[0028] In a possible implementation manner, the mounting plate is detachably disposed on the second frame.

[0029] Compared with the prior art, the wind tunnel static pressure test fixture provided by the present invention has the following beneficial effects:

[0030] A wind tunnel static pressure test fixture provided by the present invention comprises two rotating drive members, two first frames, two inclination adjustment assemblies and two fixed assemblies, wherein the two rotating drive members are respectively fixed on the top wall and the bottom wall of the wind tunnel body, and the rotation axes are arranged to coincide, and can respectively drive the two first frames to rotate. The two inclination adjustment assemblies are respectively arranged on the two first frames, and the two fixed assemblies are respectively arranged on the second frames of the two inclination adjustment assemblies, and the inclination adjustment assemblies can move along the first slide grooves on the first frames and can vertically adjust the height of the fixed assemblies. With such arrangement, on the one hand, by changing the horizontal and height positions of the second frame, the posture adjustment of the model from horizontal to inclined and then to vertical can be realized, thereby simulating the actual installation posture of the model. On the other hand, when the inclination angle of the model is fixed, the wind load conditions of the model under different wind attack angles (i.e., the incoming flow direction) can be simulated by controlling the synchronous rotation of the two rotating drive members.

[0031] In the present invention, the rotating drive member, the first frame, the inclination adjustment assembly and the fixing assembly work together to simulate the stress conditions of the model at different inclination angles and different wind attack angles. The adjustment method is flexible and changeable, and has a wide range of applications, which helps to improve the accuracy of the test results, thereby providing a theoretical basis for engineering structure design.

[0032] In a second aspect, the present invention provides a wind tunnel comprising:

[0033] a wind tunnel body, the wind tunnel body having a test cavity; and

[0034] In a wind tunnel static pressure test fixture as described in any of the above implementations, the two rotating drive members are respectively installed on the top wall and the bottom wall of the wind tunnel body.

[0035] The wind tunnel provided by the present invention includes a wind tunnel static pressure test fixture as described in any of the above-mentioned implementation methods, and has the same technical effects as the above-mentioned implementation methods, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional diagram of a model in a tilted posture in a first embodiment of a wind tunnel static pressure test fixture provided by the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the track, the first frame and the moving mechanism in the first embodiment;

[0038] Figure 3 It is a stereoscopic diagram of the rotary drive member, the first frame, the tilt adjustment assembly, the fixing assembly and the model in the first embodiment;

[0039] Figure 4 for Figure 3 A top view of

[0040] Figure 5 for Figure 4 Sectional view in the AA direction;

[0041] Figure 6 for Figure 5 A partial enlarged view of the middle B part;

[0042] Figure 7 A three-dimensional diagram of a model in a horizontal posture in a second embodiment of a wind tunnel static pressure test fixture provided by the present invention;

[0043] Figure 8 A three-dimensional diagram of a model in a tilted posture in a second embodiment of a wind tunnel static pressure test fixture provided by the present invention;

[0044] Fig. 9 A three-dimensional diagram of a model in a vertical posture in a second embodiment of a wind tunnel static pressure test fixture provided by the present invention;

[0045] Fig.10 A three-dimensional diagram of the wind tunnel provided by the present invention.

[0046] Description of reference numerals:

[0047] 10. Rotating drive member; 11. Support frame; 12. Track; 121. Second slide slot; 13. Turntable; 20. First frame; 21. Moving mechanism; 211. Support plate; 212. First sliding member; 2121. First stopper; 213. First locking nut; 22. First slide slot; 30. Tilt adjustment assembly; 31. Lifting drive mechanism; 311. Adjusting rod body; 312. Locking unit; 3121. Second sliding member; 3122. Second locking nut; 32. Second frame; 321. Third slide slot; 40. Fixing assembly; 41. Mounting plate; 411. Mounting slot; 42. Clamp; 421. Set screw; 422. Third locking member; 50. Cable segment model; 60. Wind tunnel body. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] Please also read Figures 1 to 10 , the following describes a wind tunnel static pressure test fixture and a wind tunnel provided by an embodiment of the present invention. Figures 1 to 6 A schematic diagram related to a first embodiment of a wind tunnel static pressure test fixture provided by the present invention; Figures 7 to 9A schematic diagram of a second embodiment of a wind tunnel static pressure test fixture provided by the present invention; Fig.10 A schematic diagram of the wind tunnel provided by the present invention.

[0050] See also Figure 1 , Figure 3 , Figures 7 to 9 The present invention provides a wind tunnel static pressure test fixture, which includes two rotating drive members 10, two first frames 20, two inclination adjustment assemblies 30 and two fixing assemblies 40. The two rotating drive members 10 are used to be installed on the top wall and the bottom wall of the wind tunnel body respectively, and the rotation axes of the two rotating drive members 10 are coaxially arranged; the two first frames 20 are respectively arranged on the two rotating drive members 10, and the first frame 20 has a horizontal first slide groove 22; the two inclination adjustment components 30 are respectively arranged on the two first frames 20, and the inclination adjustment components 30 include a lifting drive mechanism 31 and a second frame 32, and the second frame 32 is arranged on a side of the two first frames 20 adjacent to each other, and the lifting drive mechanism 31 is movably arranged on the corresponding first slide groove 22, and is used to drive the second frame 32 to move up and down; the two fixed components 40 are respectively arranged on the two second frames 32, and the fixed components 40 include a mounting plate 41 and a clamp 42, and the mounting plate 41 is rotatably matched with the corresponding second frame 32, and the rotation axis of the mounting plate 41 is perpendicular to the length direction of the first slide groove 22, and the mounting plate 41 is provided with a mounting groove 411 along the direction of its own rotation axis, and the clamp 42 is movably arranged in the mounting groove 411, and the clamps 42 on the two fixed components 40 are respectively used to connect with the two ends of the model.

[0051] Compared with the prior art, the wind tunnel static pressure test fixture provided by the present invention has the following beneficial effects:

[0052] A wind tunnel static pressure test fixture provided by the present invention comprises two rotating drive members 10, two first frames 20, two inclination adjustment assemblies 30 and two fixed assemblies 40, wherein the two rotating drive members 10 are respectively fixed to the top wall and the bottom wall of the wind tunnel body, and the rotation axis is arranged to coincide, and can respectively drive the two first frames 20 to rotate. The two inclination adjustment assemblies 30 are respectively arranged on the two first frames 20, and the two fixed assemblies 40 are respectively arranged on the second frames 32 of the two inclination adjustment assemblies 30. The inclination adjustment assemblies 30 can not only move along the first slide groove 22 on the first frame 20, but also vertically adjust the height of the fixed assembly 40. In this way, on the one hand, by changing the horizontal and height positions of the second frame 32, the posture adjustment of the model from horizontal to inclined and then to vertical can be realized, thereby simulating the actual installation posture of the model. On the other hand, when the inclination of the model is fixed, the wind load conditions of the model under different wind attack angles (i.e., incoming flow directions) can be simulated by controlling the synchronous rotation of the two rotating drive members 10.

[0053] In the present invention, the rotating drive member 10, the first frame 20, the inclination adjustment assembly 30 and the fixing assembly 40 work together to simulate the wind load conditions of the model at different inclination angles and different wind attack angles. The adjustment method is flexible and changeable, and has a wide range of applications, which helps to improve the accuracy of the test results, thereby providing a reliable basis for engineering structure design.

[0054] The rotary drive member 10 is installed at the top or bottom of the wind tunnel body. The rotary drive member 10 can be a driving device such as a rotating table, and the rotary power output is realized through a built-in reduction motor, a hydraulic rotary motor, etc. The function of the rotary drive member 10 is to drive the corresponding first frame 20 to rotate around its own rotation axis, so as to simulate the force of the model under different airflow directions.

[0055] Considering that the airflow in the middle of the wind tunnel body is more stable in actual situations, the rotary drive member 10 should be installed in the middle of the wind tunnel body as much as possible so that the model is also in the middle area of ​​the wind tunnel body, which helps to ensure the accuracy of the test results.

[0056] It should be noted that the model in the attached drawings of the specification of the present invention is a cylindrical cable segment model 50, and it can also be set as a model of aerodynamic shapes such as other shapes (such as square columns) as needed, as long as the two ends of the model are respectively fixed on the corresponding clamps 42. In order to facilitate installation and adjustment, the two ends of the model can be connected to steel pipes, and the clamps 42 and the steel pipes are rotatably matched. During the test, the steel pipe can be rotated to change the windward area of ​​the model.

[0057] The first frame 20 and the second frame 32 are both frame-type components, which can be made of profiles such as steel and square tubes, and are made by welding or other methods. There is no specific restriction on the shape and structure of the first frame 20 and the second frame 32, as long as they can meet the use requirements. The first frame 20 has a first slide groove 22, and the lifting drive mechanism 31 can move along the first slide groove 22 to change its own horizontal position, thereby changing the horizontal position of the second frame 32 and the fixed component 40. At the same time, the lifting drive mechanism 31 can also adjust the height of the second frame 32, thereby changing the height position of the fixed component 40. Optionally, the lifting drive rod mechanism can select a driving device such as a hydraulic telescopic rod, an electric lifting rod, etc.

[0058] like Figure 7 , Figure 8 and Fig. 9As shown, the fixing assembly 40 includes a mounting plate 41 and a clamp 42. The mounting plate 41 is rotatably arranged on the second frame 32. The clamp 42 can move along the mounting groove 411 of the mounting plate 41. By adjusting the height and horizontal position of the fixing assembly 40, the inclined cable segment model 50 can be switched between horizontal, inclined and vertical postures. A plurality of clamps 42 are provided along the length direction of the mounting groove 411. A plurality of inclined cable segment models 50 can be installed on the fixing assembly 40 at the same time, so as to perform a static pressure test on a plurality of parallel inclined cable segment models 50.

[0059] See also Figure 1 and Figure 2 The rotating driving member 10 includes a supporting frame 11, a track 12 and a turntable 13. The supporting frame 11 is arranged on the top wall or the bottom wall of the wind tunnel body; the track 12 is annular and is arranged on the supporting frame 11. The first frame 20 is slidably matched with the track 12; the turntable 13 is arranged on the supporting frame 11, and is used to drive the first frame 20 to rotate around a vertical axis.

[0060] like Figure 1 As shown, in this embodiment, the rotary drive member 10 located at the bottom is a rotating round table, which is relatively large in size and heavy in weight. Considering factors such as the installation position and the load-bearing capacity of the wind tunnel body, the rotary drive member 10 located at the top includes a support frame 11, a track 12 and a turntable 13. The support frame 11 is fixed to the top wall of the wind tunnel body by fasteners such as bolts, and the track 12 is fixed to the bottom of the support frame 11 by welding or screw connection, etc., for supporting and guiding the first frame 20 when it moves.

[0061] The turntable 13 is a small drive member with small size and light weight, which can be conveniently and firmly fixed on the top wall of the wind tunnel body to drive the first frame 20 to rotate. The rotary drive member 10 provided in this embodiment can be added to the ordinary wind tunnel in the prior art, which is simple to modify and low in cost.

[0062] See also Figure 1 and Figure 2The inner wall and the outer wall of the track 12 are respectively provided with a second slide groove 121 along the circumferential direction thereof, and the cross section of the second slide groove 121 is T-shaped. The first frame 20 is provided with a moving mechanism 21 that slides with the track 12, and the moving mechanism 21 includes two support plates 211, two first sliding members 212 and two first locking nuts 213. The two support plates 211 are spaced apart on the first frame 20, and the track 12 passes through the space formed between the two support plates 211; the two first sliding members 212 are respectively arranged on the two support plates 211, and the first sliding members 212 pass through the corresponding support plates 211, and one end of the first sliding member 212 extends into the second slide groove 121, and has a first stopper 2121 to prevent the first sliding member 212 from escaping from the second slide groove 121, and the other end of the first sliding member 212 has an external thread; the two first locking nuts 213 are respectively arranged on the two first sliding members 212, and the first locking nuts 213 are threadedly matched with one end of the corresponding first sliding member 212 having an external thread.

[0063] In this embodiment, the first frame 20 is slidably matched with the track 12, and the track 12 supports and guides the first frame 20. The first frame 20 is connected to the track 12 via a moving mechanism 21, and the moving mechanism 21 includes a support plate 211, a first sliding member 212, and a first locking nut 213. The first sliding member 212 has a first stopper 2121 accommodated in the second slide groove 121, and also has an external threaded portion matched with the first locking nut 213.

[0064] When the position of the first frame 20 needs to be adjusted, the first locking nut 213 is rotated to release the first sliding member 212, so that the first frame 20 can move along the track 12, thereby adjusting the relative position of the first frame 20 and the track 12. When the position adjustment of the first frame 20 is completed, the first locking nut 213 is rotated in the opposite direction to lock and fix the first sliding member 212 to prevent loosening or shaking during the test.

[0065] For ease of manufacture, the first sliding member 212 can be made of a special cylindrical head bolt. The nut of the cylindrical head bolt is accommodated in the second slide groove 121 to form a first stopper 2121. The screw end of the cylindrical head bolt is passed through the support plate 211 and threadedly matched with the first locking nut 213. The portion where the first sliding member 212 matches the support plate 211 can be smooth and threadless.

[0066] See also Figure 3 , Figure 4 and Figure 5The first frame 20 is provided with a plurality of first slide grooves 22 at intervals along the axial direction of the mounting plate 41, and the second frame 32 is provided with a plurality of third slide grooves 321 at intervals along the axial direction of the mounting plate 41, and the third slide grooves 321 are parallel to the first slide grooves 22; the lifting drive mechanism 31 includes a plurality of adjustment rod groups corresponding to the first slide grooves 22 one by one, and each adjustment rod group includes two adjustment rod bodies 311, one end of the two adjustment rod bodies 311 is respectively movably provided on the first slide groove 22, and the other ends of the two adjustment rod bodies 311 are coaxially hinged to each other and can move along the third slide groove 321.

[0067] In this embodiment, the first slide groove 22 and the third slide groove 321 can be in the shape of a T-shaped groove, a dovetail groove, a triangular groove, etc. Figure 3 The second frame 20 forms a triangular structure with the first frame 20, which is simple in structure, easy to adjust, and firmly supported. By changing the inclination angle of the adjusting rod 311, the height of the second frame can be adjusted.

[0068] See also Figure 5 and Figure 6 , each end of the adjusting rod body 311 is provided with a locking unit 312, and the locking unit 312 includes a second sliding member 3121 and a second locking nut 3122. The second sliding member 3121 is arranged through the end of the adjusting rod body 311, one end of the second sliding member 3121 is slidably matched with the corresponding first sliding groove 22 or second sliding groove 121, and has a second stopper to prevent the adjusting rod body 311 from escaping from the corresponding first sliding groove 22 or second sliding groove 121, and the other end of the second sliding member 3121 has an external thread; the second locking nut 3122 is threadedly matched with one end of the second sliding member 3121 having an external thread.

[0069] In this embodiment, the second sliding member 3121 has the same structure as the first sliding member 212, and the second locking nut 3122 has the same structure as the first locking nut 213. After the position adjustment of the adjusting rod 311 and the second frame is completed, the second locking nut 3122 can be rotated to lock and fix the first frame, the adjusting rod 311 and the second frame as a whole to prevent them from loosening or shaking during the test.

[0070] See also Figure 3 and Figure 6 The fixture 42 includes a moving part and a mounting part. The moving part is slidably matched with the mounting groove 411. The mounting part has a receiving hole for accommodating the end of the model. The side wall of the receiving hole is provided with a locking hole. The inner thread of the locking hole is matched with a set screw 421. The screw end of the set screw 421 abuts against the model to firmly fix the end of the inclined cable segment model 50 to the fixture 42 to prevent the inclined cable segment model 50 from shaking during the test.

[0071] See also Figure 3 and Figure 6 The fixing assembly 40 also includes a third locking member 422 for fixing the clamp 42 in the mounting groove 411. When the spacing between the multiple clamps 42 is adjusted, they can be fixed to the mounting plate 41 through the third locking member 422, and multiple inclined cable models can be tested at the same time.

[0072] Optionally, the third locking member 422 may be a detachable connecting component such as a threaded fastener, a cable tie, a binding rope, or an iron wire.

[0073] See also Figure 3 The mounting plate 41 is detachably mounted on the second frame 32. According to the test requirements, when multiple cable segment models 50 need to be tested simultaneously, a longer mounting plate 41 can be replaced in order to simultaneously install multiple cable segment models 50. According to the requirements, a locking member can also be provided at the rotating shaft of the mounting plate 41, which is used to lock and limit the mounting plate after the cable segment model 50 is installed and fixed to prevent it from rotating.

[0074] See also Fig.10 In a second aspect, the present invention provides a wind tunnel, which specifically includes a wind tunnel body having a test cavity; and a wind tunnel static pressure test fixture as provided in any of the above embodiments, wherein two rotating drive members 10 are respectively installed on the top wall and the bottom wall of the wind tunnel body.

[0075] The wind tunnel provided by the present invention can be used to perform static pressure test on the cable segment model 50 or other models, and can simulate the wind load conditions of one or multiple models in parallel in different postures and flow directions. The adjustment method is flexible and changeable, and the application range is wide.

[0076] It can be understood that the various parts in the above-mentioned embodiments can be freely combined or deleted to form different combination embodiments. The specific contents of each combination embodiment will not be repeated here. After this description, it can be considered that the specification of the present invention has recorded various combination embodiments and can support different combination embodiments.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind tunnel static pressure test fixture, characterized in that: include: Two rotating drive members (10) are respectively mounted on the top wall and the bottom wall of the wind tunnel body, and the rotation axes of the two rotating drive members (10) are coaxially arranged; Two first frames (20), respectively arranged on the two rotating drive members (10), the first frames (20) having a horizontal first sliding groove (22); Two inclination adjustment assemblies (30) are respectively arranged on the two first frames (20), the inclination adjustment assemblies (30) comprising a lifting drive mechanism (31) and a second frame (32), the second frame (32) being arranged on one side of the two first frames (20) adjacent to each other, the lifting drive mechanism (31) being movably arranged on the corresponding first slide groove (22) for driving the second frame (32) to move up and down; and Two fixing components (40) are respectively arranged on the two second frames (32), the fixing components (40) comprising a mounting plate (41) and a clamp (42), the mounting plate (41) is rotatably matched with the corresponding second frame (32), the rotation axis of the mounting plate (41) is perpendicular to the length direction of the first slide groove (22), the mounting plate (41) is provided with a mounting groove (411) along the direction of its own rotation axis, the clamp (42) is movably arranged in the mounting groove (411), and the clamps (42) on the two fixing components (40) are respectively connected to two ends of the model; The rotary drive member (10) comprises: A support frame (11) is arranged on the top wall or the bottom wall of the wind tunnel body; The track (12) is annular, the track (12) is arranged on the support frame (11), and the first frame (20) is slidably matched with the track (12); and A rotating disk (13) is provided on the supporting frame (11) and is used to drive the first frame (20) to rotate around a vertical axis; The inner circumferential wall and the outer circumferential wall of the track (12) are respectively provided with a second slide groove (121) along the circumferential direction thereof, and the cross section of the second slide groove (121) is T-shaped. The first frame (20) is provided with a moving mechanism (21) that slidably cooperates with the track (12), and the moving mechanism (21) comprises: Two support plates (211) are arranged at intervals on the first frame (20), and the track (12) passes through the space between the two support plates (211); two first sliding members (212), respectively provided on the two support plates (211), the first sliding member (212) passing through the corresponding support plate (211), one end of the first sliding member (212) extending into the second sliding groove (121), and having a first stopper (2121) for preventing the first sliding member (212) from escaping from the second sliding groove (121), and the other end of the first sliding member (212) having an external thread; and Two first locking nuts (213) are respectively arranged on the two first sliding members (212), and the first locking nuts (213) are threadably matched with one end of the corresponding first sliding member (212) having an external thread.

2. A wind tunnel static pressure test fixture according to claim 1, characterized in that: The first frame (20) is provided with a plurality of first slide grooves (22) at intervals along the axial direction of the mounting plate (41); the second frame (32) is provided with a plurality of third slide grooves (321) at intervals along the axial direction of the mounting plate (41); the third slide grooves (321) are parallel to the first slide grooves (22); The lifting drive mechanism (31) comprises a plurality of adjustment rod groups corresponding one to one with the first slide groove (22), each of the adjustment rod groups comprising two adjustment rod bodies (311), one end of the two adjustment rod bodies (311) being movably disposed in the first slide groove (22), and the other ends of the two adjustment rod bodies (311) being coaxially hinged to each other and capable of moving along the third slide groove (321).

3. A wind tunnel static pressure test fixture according to claim 2, characterized in that: A locking unit (312) is provided at the end of each adjusting rod body (311), and the locking unit (312) comprises: a second sliding member (3121) penetrating the end of the adjusting rod body (311), one end of the second sliding member (3121) slidably cooperates with the corresponding first sliding groove (22) or the second sliding groove (121), and has a second stopper portion for preventing the adjusting rod body (311) from escaping from the corresponding first sliding groove (22) or the second sliding groove (121), and the other end of the second sliding member (3121) has an external thread; and The second locking nut (3122) is threadably matched with one end of the second sliding member (3121) having an external thread.

4. A wind tunnel static pressure test fixture according to claim 1, characterized in that: A plurality of the clamps (42) are provided along the length direction of the installation groove (411).

5. A wind tunnel static pressure test fixture according to claim 1, characterized in that: The clamp (42) comprises a moving part and a mounting part, the moving part slidably cooperates with the mounting groove (411), the mounting part has a receiving hole for accommodating the end of the model, the side wall of the receiving hole is provided with a locking hole, the locking hole has an internal thread cooperated with a set screw (421), and the screw end of the set screw (421) abuts against the model.

6. A wind tunnel static pressure test fixture according to claim 5, characterized in that: The fixing assembly (40) further comprises a third locking member (422) for fixing the clamp (42) in the installation groove (411).

7. A wind tunnel static pressure test fixture according to claim 1, characterized in that: The mounting plate (41) is detachably arranged on the second frame (32).

8. A wind tunnel, characterized in that: include: A wind tunnel body, wherein the wind tunnel body has a test cavity; as well as A wind tunnel static pressure test fixture as claimed in any one of claims 1 to 7, wherein the two rotating drive members (10) are respectively mounted on the top wall and the bottom wall of the wind tunnel body.

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