A wind tunnel test model

Abstract

This utility model relates to the field of wind tunnel testing technology and discloses a wind tunnel testing model, including an arc-shaped wind chamber. A test area is provided on the bottom surface of the arc-shaped wind chamber. A fitted square top plate is installed in the center of the top surface of the test area. A placement groove is formed in the center of the test area below the square top plate. A rotating base assembly is placed in the placement groove, and a fixing clamping assembly is provided at the top of the rotating base assembly. An annular groove is formed on the outer side of the placement groove, and an annular angle detector is placed in the annular groove. By providing a detachable square top plate on the test area, maintenance by personnel is facilitated. By setting up the rotating base assembly, in conjunction with the annular angle detector and signal transmitter, 360-degree wind tunnel testing of the test specimen can be realized, simulating different wind direction conditions. It can also rotate in real time during the testing process to collect experimental data under angle changes. By setting up the fixing clamping assembly, test specimens of different sizes can be clamped, achieving automated clamping and improving testing efficiency and versatility.

Description

Technical Field

[0001] This utility model relates to the field of wind tunnel testing technology, specifically a wind tunnel testing model. Background Technology

[0002] Wind tunnel testing is a core tool in aerodynamics research. It simulates the airflow around an object by artificially generating and controlling airflow, mimicking the object's motion within natural airflow to study the interaction between the airflow and the object. Its principle is based on the relativity of motion—fixing the model and using an equivalent reverse airflow to represent the actual motion of the object, while also incorporating the principle of flow similarity to recreate real aerodynamic effects through a scaled-down model. Wind tunnel testing offers significant advantages: it can be conducted indoors, unaffected by weather conditions, supporting all-weather testing; models can be scaled up as needed, with materials ranging from wood to high-strength alloys for flexible adaptation; some experiments even simulate structural stiffness and mass distribution; and data accuracy is high, ensuring reliable results by correcting for errors such as tunnel wall interference and support effects. Its applications have expanded to aerospace, transportation, construction, sports, and many other fields.

[0003] The types of objects that need to be tested in wind tunnels are diverse, including airplane models, building models, car models, building panels, sports equipment, etc. However, when existing wind tunnel test models test various panels, such as car sound insulation panels, curtain wall panels, and deflectors, they need to test the wind pressure load under different wind angles. However, traditional devices can only fix a single angle and cannot simulate complex working conditions such as typhoons and crosswinds, resulting in a large deviation between the data and the actual force. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a wind tunnel test model that solves the problem of limited testing angles for panels during wind tunnel experiments.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wind tunnel test model, including an arc-shaped wind chamber, a test site is provided on the bottom surface of the arc-shaped wind chamber, a fitted square top plate is installed in the middle of the top surface of the test site, a placement groove is opened in the middle of the test site below the square top plate, a rotating base assembly penetrating the square top plate is placed in the placement groove, a fixing clamping assembly is provided at the top of the rotating base assembly, an annular groove is opened on the outside of the placement groove, and an annular angle detector is provided in the annular groove.

[0006] Furthermore, the rotating base assembly includes a rotating motor, a drive shaft on the top surface of the rotating motor is connected to a rotating chassis, the bottom surface of the rotating chassis is attached to the top surface of the placement slot, an outward signal transmitter is provided at one end of the outer side of the rotating chassis, the signal transmitter is parallel to the annular angle detector, a connecting column is provided on the top surface of the rotating chassis that extends through to the top surface of the square top plate, a fixing clamping assembly is fixed on the connecting column, fixing columns are symmetrically arranged along the center on the outer side of the top surface of the square top plate, fixing bolts are provided on the top surface of the fixing columns that extend downward, and a frosted base is provided on the bottom surface of the fixing bolts that is attached to the top surface of the rotating chassis.

[0007] Furthermore, the fixed clamping assembly includes a clamping base fixedly mounted on the connecting column. Two bidirectional threaded rods are symmetrically arranged on the left and right sides inside the clamping base. One end of each bidirectional threaded rod is connected to a clamping motor. Both sides of the bidirectional threaded rod are connected to a movable base plate by threads. The two bidirectional threaded rods are fixedly connected to the top surface of the movable base plate on the same side of the movable base plate. A clamping plate is fixedly connected to the inner side of the clamping base plate by bolts. The top surface of the clamping base is provided with a clamping groove for the movable base plate to move back and forth for clamping.

[0008] Furthermore, the top surface of the rotating chassis is equipped with a removable frosted pad, which is used in conjunction with the frosted base.

[0009] Furthermore, the top surface of the square top plate is uniformly provided with arc-shaped observation windows.

[0010] Furthermore, the top surface of the frosted pad is provided with an angle scale, which is located on the same vertical plane as the arc-shaped observation window.

[0011] Furthermore, a limit groove is provided on the bottom surface of the rotating chassis, and a limit ring is provided in the test area for placing the limit groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] A detachable square top plate on the test site facilitates maintenance by staff. A rotating base assembly, in conjunction with a ring angle detector and signal transmitter, enables 360-degree multi-angle wind tunnel testing of the test specimens, simulating different wind conditions. It can also rotate in real-time during testing to collect experimental data under varying angles. A fixed clamping assembly allows for the clamping of test specimens of different sizes, achieving automated clamping and improving testing efficiency and versatility. A detachable frosted pad enhances the fixing effect while facilitating daily replacement and maintenance. An arc-shaped observation window allows staff to observe the wear of the frosted pad in real-time and address issues promptly. An angle scale allows staff to simultaneously record angles and experimental phenomena, improving the intuitiveness of data acquisition. A limiting groove restricts the radial displacement of the rotating chassis, ensuring positional stability during rotation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the test site and the annular angle detector of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the square top plate, rotating base assembly, and fixed clamping assembly of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the disassembled rotating base assembly of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the disassembled fixing and clamping component of this utility model.

[0019] In the diagram: 1. Arc-shaped air chamber; 2. Test site; 201. Placement slot; 202. Annular slot; 203. Limiting ring; 3. Square top plate; 301. Fixing column; 302. Fixing bolt; 303. Frosted base; 304. Arc-shaped observation window; 4. Rotating base assembly; 401. Rotating motor; 402. Rotating chassis; 403. Signal transmitter; 404. Connecting column; 405. Frosted pad; 406. Angle scale; 407. Limiting slot; 5. Fixed clamping assembly; 501. Clamping base; 502. Bidirectional threaded rod; 503. Clamping motor; 504. Moving base plate; 505. Clamping base plate; 506. Clamping plate; 507. Clamping slot; 6. Annular angle detector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1 to 5 As shown, a wind tunnel test model includes an arc-shaped wind chamber 1, a test site 2 is provided on the bottom surface of the arc-shaped wind chamber 1, a square top plate 3 is installed in the middle of the top surface of the test site 2, a placement groove 201 is opened in the middle of the test site 2 below the square top plate 3, a rotating base assembly 4 that penetrates the square top plate 3 is placed in the placement groove 201, a fixing clamping assembly 5 is provided at the top of the rotating base assembly 4, an annular groove 202 is opened on the outside of the placement groove 201, and an annular angle detector 6 is provided in the annular groove 202.

[0022] like Figure 1 As shown, the main improvement of this utility model lies in solving the problem of the panel having a single testing angle during wind tunnel experiments, such as... Figures 1 to 5As shown, in this utility model, a wind tunnel test model is prepared by first selecting a suitable clamping plate 506 according to the shape of the test piece, and then fixing the clamping plate 506 to the inside of the clamping base plate 505 with bolts. Then, the clamping motor 503 is controlled to start working, and the bidirectional threaded rod 502 will start to rotate, driving the moving base plate 504, the clamping base plate 505 and the clamping plate 506 to move symmetrically inward in the clamping groove 507. As the inside of the clamping plate 506 comes into contact with the test piece, the test piece is clamped and fixed. When angle adjustment is required, the rotating motor 401 will drive the rotating chassis 402 to rotate. During the rotation, the signal transmitter 403 on the outside of the rotating chassis 402 will cooperate with the annular angle detector 6 to detect the change in rotation angle in real time. The top surface of the rotating chassis 402 is fixedly connected to the fixing clamping assembly 5 through the connecting column 404. The fixing clamping assembly 5 clamps and fixes the detection element, thereby driving the detection element to change angle. After the angle adjustment is completed, the fixing bolt 302 on the fixing column 301 is tightened so that the frosted base 303 on the bottom surface of the fixing bolt 302 fits against the top surface of the rotating chassis 402, thus completing the fixation.

[0023] like Figure 3 and Figure 4 As shown, the rotating base assembly 4 includes a rotating motor 401. The drive shaft on the top surface of the rotating motor 401 is connected to a rotating chassis 402. The bottom surface of the rotating chassis 402 is attached to the top surface of the placement slot 201. An outward signal transmitter 403 is provided at one end of the outer side of the rotating chassis 402. The signal transmitter 403 is parallel to the annular angle detector 6. A connecting post 404 is provided on the top surface of the rotating chassis 402, penetrating to the top surface of the square top plate 3. A fixing clamping assembly 5 is fixed on the connecting post 404. Fixing posts 301 are symmetrically arranged along the center on the outer side of the top surface of the square top plate 3. A fixing bolt 302 is provided on the top surface of the fixing post 301, penetrating downward. A frosted base 303 is provided on the bottom surface of the fixing bolt 302, and the frosted base 303 is attached to the top surface of the rotating chassis 402.

[0024] Specifically, when the angle of the detection piece needs to be adjusted, the rotating motor 401 will drive the rotating chassis 402 to rotate. During the rotation, the signal transmitter 403 set on the outside of the rotating chassis 402 will cooperate with the annular angle detector 6 to detect the change of rotation angle in real time. The top surface of the rotating chassis 402 is fixedly connected to the fixing clamping assembly 5 through the connecting column 404. The fixing clamping assembly 5 clamps and fixes the detection piece, thereby driving the detection piece to change angle. After the angle adjustment is completed, the fixing bolt 302 set on the fixing column 301 is tightened so that the frosted base 303 on the bottom surface of the fixing bolt 302 fits against the top surface of the rotating chassis 402, thus completing the fixation.

[0025] like Figure 3 and Figure 5 As shown, the fixed clamping assembly 5 includes a clamping base 501 fixedly mounted on the connecting column 404. Two bidirectional threaded rods 502 are symmetrically arranged in the clamping base 501. One end of the bidirectional threaded rod 502 is connected to a clamping motor 503. Both sides of the bidirectional threaded rod 502 are threadedly connected to a movable base plate 504. The two bidirectional threaded rods 502 are fixedly connected to the top surface of the movable base plate 504 on the same side of the movable base plate 504. A clamping plate 506 is fixedly connected to the inner side of the clamping base plate 505 by bolts. The top surface of the clamping base 501 is provided with a clamping groove 507 for the movable base plate 504 to move back and forth for clamping.

[0026] Specifically, when it is necessary to fix the test piece, first select a suitable clamping plate 506 according to the shape of the test piece, and fix the clamping plate 506 to the inside of the clamping base plate 505 with bolts to complete the preparation work; then control the clamping motor 503 to work, the bidirectional threaded rod 502 will start to rotate, and drive the moving base plate 504, the clamping base plate 505 and the clamping plate 506 to move symmetrically inward in the clamping groove 507. As the inside of the clamping plate 506 fits against the test piece, the test piece is clamped and fixed.

[0027] like Figure 4 As shown, the top surface of the rotating chassis 402 is provided with a removable frosted pad 405, which is used in conjunction with the frosted base 303.

[0028] Specifically, by setting a removable frosted pad 405 on the top surface of the rotating chassis 402, and using the frosted pad 405 in conjunction with the frosted base 303, the two rough surfaces can bring higher friction when they are in contact, which improves the fixing effect. At the same time, the removable design also makes it easy for staff to maintain. When the wear is too great, it can be replaced, reducing maintenance costs. Moreover, by replacing the frosted pad 405 with different friction coefficients, it can be adjusted according to the test requirements and adapted to different test scenarios.

[0029] like Figure 3 As shown, the top surface of the square top plate 3 is uniformly provided with arc-shaped observation windows 304.

[0030] like Figure 3 and Figure 4 As shown, the top surface of the frosted pad 405 is provided with an angle scale 406, and the angle scale 406 and the arc-shaped observation window 304 are located on the same vertical plane.

[0031] Specifically, by setting an arc-shaped observation window 304 on the top surface of the square top plate 3, staff can observe the wear of the frosted pad 405 in real time and take timely action; while an angle scale 406 is set on the top surface of the frosted pad 405, so that staff can also observe the angle change, record the angle and test phenomena simultaneously, and improve the intuitiveness of data collection.

[0032] like Figure 2 and Figure 4 As shown, a limiting groove 407 is provided on the bottom surface of the rotating chassis 402, and a limiting ring 203 is provided on the test site 2 for placing the limiting groove 407.

[0033] Specifically, by setting a limiting groove 407 on the bottom surface of the rotating chassis 402, and setting a limiting ring 203 for placing the limiting groove 407 in the test site 2, the limiting groove 407 can limit the radial displacement of the rotating chassis 402 when the angle is adjusted, ensuring the position is stable during rotation and avoiding angle measurement errors caused by offset.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind tunnel test model comprising an arc-shaped wind chamber (1), the bottom surface of which is provided with a test site (2), characterized in that, The test site (2) has a fitted square top plate (3) installed in the middle of the top surface. The test site (2) below the square top plate (3) has a placement groove (201) in the middle. A rotating base assembly (4) that penetrates the square top plate (3) is placed in the placement groove (201). A fixing clamping assembly (5) is provided at the top of the rotating base assembly (4). An annular groove (202) is provided on the outside of the placement groove (201). An annular angle detector (6) is provided in the annular groove (202).

2. A wind tunnel model according to claim 1, wherein The rotating base assembly (4) includes a rotating motor (401), the drive shaft on the top surface of the rotating motor (401) is connected to a rotating chassis (402), the bottom surface of the rotating chassis (402) is attached to the top surface of the placement slot (201), an outward signal transmitter (403) is provided at one end of the outer side of the rotating chassis (402), the signal transmitter (403) is parallel to the annular angle detector (6), a connecting column (404) penetrating to the top surface of the square top plate (3) is provided on the top surface of the rotating chassis (402), a fixing clamping assembly (5) is fixed on the connecting column (404), a fixing column (301) is symmetrically arranged along the center on the outer side of the top surface of the square top plate (3), a fixing bolt (302) is provided on the top surface of the fixing column (301) and a frosted base (303) is provided on the bottom surface of the fixing bolt (302), and the frosted base (303) is attached to the top surface of the rotating chassis (402).

3. A wind tunnel model according to claim 2, wherein The fixed clamping assembly (5) includes a clamping base (501) fixedly mounted on a connecting column (404). Two bidirectional threaded rods (502) are symmetrically arranged on the left and right sides inside the clamping base (501). One end of the bidirectional threaded rod (502) is connected to a clamping motor (503). Both sides of the bidirectional threaded rod (502) are connected to a movable base plate (504) by threads. The two bidirectional threaded rods (502) are fixedly connected to a clamping base plate (505) on the top surface of the movable base plate (504) on the same side. A clamping plate (506) is fixedly connected to the inner side of the clamping base plate (505) by bolts. A clamping groove (507) is opened on the top surface of the clamping base (501) for clamping the movable base plate (504) to move back and forth.

4. A wind tunnel model according to claim 3, wherein The rotating chassis (402) has a removable frosted pad (405) on its top surface, which is used in conjunction with the frosted base (303).

5. A wind tunnel model according to claim 4, wherein The square top plate (3) has arc-shaped observation windows (304) evenly arranged on its top surface.

6. A wind tunnel model according to claim 5, wherein The top surface of the frosted pad (405) is provided with an angle scale (406), and the angle scale (406) and the arc-shaped observation window (304) are located on the same vertical plane.

7. A wind tunnel model according to claim 3, wherein The bottom surface of the rotating chassis (402) is provided with a limiting groove (407), and the test site (2) is provided with a limiting ring (203) for placing the limiting groove (407).

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