A wind tunnel that can simulate a multi-angle fan array

Abstract

The present invention discloses an air tunnel that can simulate a multi-angle fan array, which relates to the field of wind tunnel experiments and solves the problem that the fans on the existing fan array air tunnel are prone to breakage. It includes: a mounting bracket and a mounting ring installed inside the mounting bracket. A square frame is arranged inside the mounting ring, and a plurality of equally spaced positioning brackets are fixedly installed inside the square frame. A plurality of equally spaced fan bodies are arranged inside the positioning brackets; it further includes: a clamping mechanism for quickly assembling and disassembling the fan bodies, and the clamping mechanism is installed inside the positioning brackets. Through the clamping mechanism of the present invention, the fan bodies are quickly installed on the outside of the positioning brackets in a clamped manner, and the uppermost fan body is pressed and positioned, facilitating the quick installation of a plurality of fan bodies, and the positioning brackets provide support for the fan bodies, solving the problem that a plurality of fan bodies are prone to breakage, thereby achieving the effects of quick disassembly and assembly and stable operation.

Description

Technical Field

[0001] The present invention relates to the field of wind tunnel experiments, and particularly to a wind tunnel capable of simulating a multi-angle fan array. Background Technique

[0002] A wind tunnel experiment is a tubular experimental device that artificially generates and controls airflows to simulate the airflow around an aircraft or an object, and can measure the effect of the airflow on the object and observe physical phenomena. It is one of the most commonly used and effective tools for conducting aerodynamic experiments.

[0003] Wind tunnel experiments usually require a combination of multiple fans to generate and control airflows. The airflow is generated by the rotation of the fans, and the wind speed and direction are adjusted through a control system to simulate different airflow conditions. The existing Chinese published patent document: CN115200827A discloses a multi-fan open wind tunnel that simulates variable-angle oncoming flows. By changing the attitude of a three-degree-of-freedom platform and the relative position of a slide rail, it simulates planar and fan-shaped oncoming flows to achieve the adjustment of the spatial angle of the oncoming flow. At the same time, by controlling the different rotational speeds of the fan units, it simulates the velocity gradient between airflow layers. This wind tunnel can simulate different types of oncoming flows and can achieve a wind field environment that is more consistent with the actual flight environment of an aircraft compared to the prior art. However, during the replacement or installation process of the fans, they are stacked in a bolt-fixed manner. Due to the increase in the number of fans and the enhancement of the wind force, the connection parts of the fans are prone to breakage, resulting in low safety. Summary of the Invention

[0004] The purpose of the present invention is to provide a wind tunnel capable of simulating a multi-angle fan array to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A wind tunnel capable of simulating a multi-angle fan array includes: a mounting bracket and a mounting ring installed inside the mounting bracket. A square frame is arranged inside the mounting ring. A plurality of equally spaced positioning frames are fixedly installed inside the square frame. A plurality of equally spaced fan bodies are arranged inside the positioning frames, and the plurality of fan bodies are arranged in an array. It further includes: a clamping mechanism for quickly assembling and disassembling the fan bodies, which is installed inside the positioning frames; an angle adjustment mechanism for quickly adjusting the angles of the fan bodies, which is installed inside the positioning frames; and a flow adjustment mechanism for adjusting the rotational direction of the fan bodies, which is installed inside the mounting bracket.

[0007] Preferably, the clamping mechanism includes an installation frame arranged on the outside of the fan body, and clamp frames are fixedly installed on both sides of the installation frame. The inner side of the clamp frame is an arc-shaped structure, and the inner side of the clamp frame contacts the outer side of the positioning frame. Three arc-shaped plates distributed at equal intervals are slidably installed on the inner side of the clamp frame. The arc-shaped concave surface on the outer side of the arc-shaped plate contacts the outer side of the positioning frame, so that the arc-shaped plate cooperates with the clamp frame to be sleeved on the outer side of the positioning frame. A pull rod is fixedly installed between the three arc-shaped plates, and the arc-shaped plate is connected to the outer side of the positioning frame through a protrusion. The pull rod is docked, and an arc-shaped groove for the pull rod to limit the sliding of the pull rod is opened on the outer side of the clamping frame, which is convenient for the movement of the pull rod. A magnet plate that cooperates with the arc plate is fixedly installed on the outer side of the clamping frame to provide positioning for the arc plate. A pressure plate is slidably installed on the outer side of the positioning frame, and the bottom of the pressure plate contacts the top of the uppermost installation frame. Two symmetrically distributed springs are fixedly installed between the top of the pressure plate and the top inner wall of the positioning frame. The elasticity of spring one is used to press the pressure plate against the installation frame for positioning.

[0008] Preferably, the fan adjusting mechanism includes two positioning rods symmetrically fixedly installed on the outer side of the fan body, the positioning rods are rotatably installed on the inner side of the mounting frame, so that the fan body can rotate in the mounting frame with the positioning rods as a fulcrum, and a gear 1 is fixedly installed on the outer side of the positioning rod, and a rack plate matching the gear 1 is provided on the outer side of the positioning rod. When the rack plate moves, it can drive the positioning rod to rotate through the gear 1 to achieve angle adjustment of the fan body, and push rods are fixedly installed on the top and bottom of the rack plate, and a sleeve seat for limiting the sliding of the push rod is fixedly installed on the inner side of the clamping frame to provide support for the push rod, and a spring 2 is fixedly installed between the bottom of the rack plate and the adjacent sleeve seat, and two symmetrically distributed electric telescopic rods are fixedly installed on the top of the pressure plate, and the output end of the electric telescopic rod contacts the top of the uppermost push rod, so that the electric telescopic rod can push the adjacent push rod to move, and the push rod pushes the adjacent push rod to move, thereby achieving synchronous movement of multiple push rods.

[0009] Preferably, the flow regulating mechanism includes a gear ring fixedly mounted on the outer side of the mounting ring, the mounting ring is rotatably mounted on the inner side of the mounting bracket, a support rod is rotatably mounted between the outer side of the square frame and the inner side of the mounting ring, a motor 1 is fixedly mounted on the inner side of the mounting ring, the output end of the motor 1 is fixedly connected to the side of the square frame away from the support rod, so that the motor 1 can drive the square frame to rotate, thereby achieving angle adjustment of the square frame, a motor 2 is fixedly mounted on the outer side of the mounting bracket, a gear 2 is fixedly mounted on the output end of the motor 2, the gear 2 is located on the inner side of the mounting bracket, the gear 2 cooperates with the teeth on the outer side of the gear ring, so that the gear 2 can drive the gear ring to rotate, and a balancing block is fixedly mounted on one end of the support rod close to the mounting ring, and the weight of the balancing block is the same as the weight of the motor 2.

[0010] Preferably, an insert block is slidably installed on the inner side of the pressure plate, and a plurality of slots for limiting the insertion of the insert block are opened on the outer side of the positioning frame. A spring three is fixedly installed between the insert block and the inner side of the pressure plate, and the end of the insert block away from the spring three is an arc-shaped structure, which facilitates the insert block to detach from the slot and provides positioning for the movement of the pressure plate.

[0011] Preferably, pull blocks are fixedly mounted on both ends of the pull rod, and the outer sides of the pull blocks are in contact with the outer sides of the clamping frame, so as to facilitate the pulling of the pull rod to move.

[0012] Preferably, two symmetrically distributed arc-shaped guard plates are fixedly mounted on the outer side of the pressing plate to facilitate pulling the pressing plate.

[0013] Preferably, the top and bottom of the installation frame are fixedly installed with plug rods, and the top and bottom of the installation frame are provided with sockets for the plug rods to be limitedly inserted, and the openings of the sockets are annular inclined surface structures to facilitate the docking of the plug rods and the sockets. The plug rods and the sockets are staggered, so that when the two installation frames are in contact, the plug rods can be inserted into the corresponding sockets, which facilitates the docking of the two installation frames.

[0014] Preferably, guide cylinders for limiting the sliding of the push rods are fixedly mounted on the top and bottom of the installation frame, so that adjacent push rods can be butted against each other through the guide cylinders.

[0015] Preferably, two symmetrically distributed guide rings are fixedly installed on the inner side of the mounting bracket, the outer side of the guide ring is an arc structure, and the outer side of the mounting ring is provided with an annular groove for limiting the sliding of the guide ring, thereby improving the smoothness of the rotation of the gear ring and the mounting ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention uses a clamping mechanism and a fan body that is quickly installed on the outside of a positioning frame in a clamping manner, so that multiple fan bodies are close to each other and fixed in a stacked manner. The top fan body is pressed and positioned, which facilitates the rapid installation of multiple fan bodies and the removal of the fan body that needs to be replaced. The positioning frame provides support for the fan body, which solves the problem that multiple fan bodies are easy to break, thereby achieving the effect of rapid disassembly and assembly and smooth operation.

[0018] The present invention uses a fan adjusting mechanism to push the corresponding push rod to move downward when the electric telescopic rod is in operation, so that the push rod can synchronously push the push rod directly below to move synchronously, thereby realizing synchronous adjustment of the angles of multiple fan bodies, facilitating rapid experimental flow measurement, and thus improving the convenience of adjusting the angles of the fan bodies.

[0019] Through the flow regulation mechanism, the present invention can realize the rotation of the mounting ring through the second motor, enabling the mounting ring to drive the square frame to rotate synchronously, facilitating the adjustment of the overall rotation angle of multiple fan bodies, and through the angle adjustment of the square frame, facilitating the flow measurement angle of multiple fan bodies as a whole, thereby facilitating the rapid simulation of various air flow patterns. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the mounting bracket and the square frame in the present invention;

[0022] Figure 3 is Figure 2 an enlarged schematic diagram of area A in

[0023] Figure 4 is a schematic diagram of the positioning frame and the fan body in the present invention;

[0024] Figure 5 is a schematic diagram of the insertion block and the pressing plate in the present invention;

[0025] Figure 6 is a schematic diagram of the arc plate and the clamping frame in the present invention;

[0026] Figure 7 is a schematic diagram of the rack plate and the socket in the present invention;

[0027] Figure 8 is a schematic diagram of the push rod and the insertion rod in the present invention.

[0028] In the figure: 1, mounting bracket; 2, mounting ring; 3, square frame; 4, positioning frame; 5, fan body; 6, mounting frame; 7, clamping frame; 8, arc plate; 9, pull rod; 10, magnet plate; 11, pressing plate; 12, first spring; 13, positioning rod; 14, first gear; 15, rack plate; 16, push rod; 17, socket; 18, second spring; 19, electric telescopic rod; 20, toothed ring; 21, support rod; 22, first motor; 23, second motor; 24, second gear; 25, balance weight; 26, insertion block; 27, third spring; 28, pull block; 29, arc-shaped guard plate; 30, insertion rod; 31, guide cylinder; 32, guide ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Please refer to Figures 1-8 , a wind tunnel that can simulate a multi-angle fan array in the figure, including a mounting bracket 1 and a mounting ring 2 installed inside the mounting bracket 1. A square frame 3 is arranged inside the mounting ring 2. A plurality of equally spaced positioning frames 4 are fixedly installed inside the square frame 3. A plurality of equally spaced fan bodies 5 are arranged inside the positioning frames 4, and the plurality of fan bodies 5 are arranged in an array; further including: a clamping mechanism for quickly assembling and disassembling the fan bodies 5, the clamping mechanism is installed inside the positioning frames 4; an adjustable fan mechanism for quickly adjusting the angle of the fan bodies 5, the adjustable fan mechanism is installed inside the positioning frames 4; a flow regulating mechanism for adjusting the rotation direction of the fan bodies 5, the flow regulating mechanism is installed inside the mounting bracket 1.

[0031] The clamping mechanism includes a mounting frame 6 arranged outside the fan body 5. Clamping frames 7 are fixedly installed on both sides of the mounting frame 6. The inner side of the clamping frame 7 is an arc-shaped structure. The inner side of the clamping frame 7 is in contact with the outer side of the positioning frame 4. Three equally spaced arc-shaped plates 8 are slidably installed inside the clamping frame 7. The arc-shaped concave surface on the outer side of the arc-shaped plate 8 is in contact with the outer side of the positioning frame 4, so that the arc-shaped plate 8 cooperates with the clamping frame 7 to be sleeved on the outer side of the positioning frame 4. A pull rod 9 is fixedly installed between the three arc-shaped plates 8. The arc-shaped plate 8 is docked with the pull rod 9 through a convex block. An arc-shaped groove for the pull rod 9 to be limited and slide is opened on the outer side of the clamping frame 7 to facilitate the movement of the pull rod 9. A magnet plate 10 that cooperates with the arc-shaped plate 8 is fixedly installed on the outer side of the clamping frame 7 to provide positioning for the arc-shaped plate 8. A pressing plate 11 is slidably installed on the outer side of the positioning frame 4. The bottom of the pressing plate 11 is in contact with the top of the uppermost mounting frame 6. Two symmetrically distributed first springs 12 are fixedly installed between the top of the pressing plate 11 and the inner wall of the top of the positioning frame 4. Using the elasticity of the first springs 12, the pressing plate 11 presses and positions the mounting frame 6. An insertion block 26 is slidably installed inside the pressing plate 11. A plurality of slots for the insertion block 26 to be limited and inserted are opened on the outer side of the positioning frame 4. A third spring 27 is fixedly installed between the insertion block 26 and the inner side of the pressing plate 11. The end of the insertion block 26 away from the third spring 27 is an arc-shaped structure to facilitate the insertion block 26 to disengage from the slot and provide positioning for the movement of the pressing plate 11. Pulling blocks 28 are fixedly installed at both ends of the pull rod 9. The outer side of the pulling block 28 is in contact with the outer side of the clamping frame 7 to facilitate pulling the pull rod 9 to move. Two symmetrically distributed arc-shaped protection plates 29 are fixedly installed on the outer side of the pressing plate 11 to facilitate pulling the pressing plate 11. Insertion rods 30 are fixedly installed at the top and bottom of the mounting frame 6. Insertion holes for the insertion rods 30 to be limited and inserted are opened at the top and bottom of the mounting frame 6, and the opening of the insertion hole is an annular inclined surface structure to facilitate the docking of the insertion rod 30 and the insertion hole. The insertion rods 30 and the insertion holes are arranged in a staggered manner, so that when the two mounting frames 6 are in contact, the insertion rod 30 can be inserted into the corresponding insertion hole to facilitate the docking of the two mounting frames 6, and grooves for the insertion rod 30 to be limited and inserted are opened on the outer side of the pressing plate 11 and the bottom of the positioning frame 4;

[0032] When assembling the newly added fan body 5 and the mounting frame 6, the pressure plate 11 can be pulled upward, causing the pressure plate 11 to drive the insertion block 26 to move along the inner side of the slot to the outside of the positioning frame 4. The insertion block 26 can be retracted into the inner side of the pressure plate 11 and can compress the third spring 27, so that the bottom of the new mounting frame 6 contacts the top of the uppermost mounting frame 6. The insertion rod 30 on the newly added mounting frame 6 can be inserted into the insertion hole at the top of the uppermost mounting frame 6. Utilizing the elasticity of the first spring 12, the bottom of the pressure plate 11 can contact the top of the newly added mounting frame 6. The insertion block 26 can be inserted into the slot of the positioning frame 4 again, and the clamping frames 7 on both sides of the mounting frame 6 can be sleeved on the outside of the positioning frame 4. By pulling the pull block 28 to drive the pull rod 9, the pull rod 9 drives the three arc-shaped plates 8 to move along the inner side of the clamping frame 7 and be sleeved on the outside of the positioning frame 4, so that the arc-shaped plates 8 are adsorbed on the magnet plate 10, and then the mounting frame 6 can be fixed inside the positioning frame 4, completing the addition of the mounting frame 6 and the fan body 5. The positioning frame 4 provides support for the fan body 5, solving the problem that multiple fan bodies 5 are easily broken, thus achieving the effects of quick disassembly and assembly and stable operation.

[0033] Working principle: First, the staff presses the bottom of the mounting frame 6 against the bottom inner wall of the positioning frame 4. Then, the two clamping frames 7 on the outside of the mounting frame 6 are sleeved on the outside of the positioning frame 4, and the pull rod 9 is driven to move along the arc-shaped groove on the clamping frame 7 through the pull block 28, so that the pull rod 9 drives the three arc-shaped plates 8 to move along the inner side of the clamping frame 7, and the arc-shaped plates 8 are adsorbed on the magnet plate 10. The clamping frame 7 can cooperate with the arc-shaped plates 8 to be sleeved on the outside of the positioning frame 4. Subsequently, the staff places the next mounting frame 6 on the top of this mounting frame 6, so that the insertion rod 30 at the bottom of the newly added mounting frame 6 is inserted into the insertion hole at the top of this mounting frame 6. Thus, the remaining mounting frames 6 are installed in sequence. Finally, the staff pulls the pressure plate 11 downward. Utilizing the elasticity of the first spring 12, the bottom of the pressure plate 11 abuts against the top of the uppermost mounting frame 6, and the insertion block 26 inside the pressure plate 11 can be inserted into the slot of the positioning frame 4 by using the elasticity of the third spring 27 to provide auxiliary positioning for the pressure plate 11, and then the installation of multiple mounting frames 6 can be completed;

[0034] During disassembly, the staff pulls the pressure plate 11 upward to compress the first spring 12, and the arc surface of the insertion block 26 can slide out of the slot of the positioning frame 4. The staff only needs to push the mounting frame 6 at the top and the mounting frame 6 at the bottom of the mounting frame 6 to be disassembled, so that the two mounting frames 6 are separated from the mounting frame 6 to be disassembled, and then the mounting frame 6 to be disassembled can be taken out, improving the convenience of installation and replacement of the mounting frame 6. Moreover, the positioning frame 4 and the insertion rod 30 can provide support for the mounting frame 6, improving the stability of the fan body 5 during operation and ensuring the normal progress of the wind tunnel experiment, thus achieving the effects of quick disassembly and assembly and stable operation and improving the safety of the wind tunnel experiment.

[0035] Embodiment 2: Please refer to Figures 5-8 , this embodiment further describes Embodiment 1. The fan adjustment mechanism in the figure includes two positioning rods 13 symmetrically and fixedly installed on the outer side of the fan body 5. The positioning rods 13 are rotatably installed inside the installation frame 6, enabling the fan body 5 to rotate within the installation frame 6 with the positioning rods 13 as the fulcrum. A first gear 14 is fixedly installed on the outer side of the positioning rod 13, and a rack plate 15 that cooperates with the first gear 14 is arranged on the outer side of the positioning rod 13. When the rack plate 15 moves, it can drive the positioning rod 13 to rotate through the first gear 14, realizing the angle adjustment of the fan body 5. Push rods 16 are fixedly installed at both the top and bottom of the rack plate 15. Through holes 1 for limiting and inserting the push rods 16 are opened at both the top and bottom of the installation frame 6, enabling the push rods 16 on two adjacent installation frames 6 to be inserted into the corresponding through holes 1. A socket 17 for limiting and sliding the push rod 16 is fixedly installed inside the clamping frame 7 to provide support for the push rod 16. A second spring 18 is fixedly installed between the bottom of the rack plate 15 and the adjacent socket 17. Two symmetrically distributed electric telescopic rods 19 are fixedly installed on the top of the pressing plate 11. The output end of the electric telescopic rod 19 is in contact with the top end of the uppermost push rod 16, enabling the electric telescopic rod 19 to push the adjacent push rod 16 to move, and enabling this push rod 16 to push the adjacent push rod 16 to move, realizing the synchronous movement of multiple push rods 16. Through holes 2 for limiting and inserting the push rods 16 are opened on the surface of the pressing plate 11. Guide cylinders 31 for limiting and sliding the push rods 16 are fixedly installed at both the top and bottom of the installation frame 6, enabling adjacent push rods 16 to be butted through the guide cylinders 31.

[0036] In this embodiment: When the electric telescopic rod 19 operates, it can push the corresponding push rod 16 to move. This push rod 16 drives the rack plate 15 to move synchronously. The rack plate 15 drives the positioning rod 13 to rotate through the first gear 14, enabling the positioning rod 13 to drive the fan body 5 to rotate, realizing the angle adjustment of the fan body 5. And the rack plate 15 compresses the second spring 18 and drives another push rod 16 to move. The bottom end of this push rod 16 pushes the push rod 16 on the next installation frame 6 to move, enabling this push rod 16 to drive the corresponding rack plate 15 to move. Thus, the electric telescopic rod 19 can push the push rods 16 on the same vertical line to move synchronously, enabling multiple fan bodies 5 on the same positioning frame 4 to rotate synchronously, thereby realizing the flow measurement simulation of the air flow, improving the convenience of the angle adjustment of the fan body 5, and according to the experimental requirements, enabling the air flow directions on multiple positioning frames 4 to be different, and simulating air flow experiments at multiple different angles.

[0037] Embodiment 3: Please refer to Figures 1-3, this embodiment further illustrates other embodiments. The flow regulating mechanism in the figure includes a toothed ring 20 fixedly installed on the outside of the mounting ring 2. The mounting ring 2 is rotatably installed on the inside of the mounting bracket 1. A support rod 21 is rotatably installed between the outside of the square frame 3 and the inside of the mounting ring 2. A first motor 22 is fixedly installed on the inside of the mounting ring 2. The output end of the first motor 22 is fixedly connected to the side of the square frame 3 away from the support rod 21, enabling the first motor 22 to drive the square frame 3 to rotate and achieve the angle adjustment of the square frame 3. A second motor 23 is fixedly installed on the outside of the mounting bracket 1. A second gear 24 is fixedly installed at the output end of the second motor 23. The second gear 24 is located inside the mounting bracket 1 and is engaged with the teeth on the outside of the toothed ring 20, enabling the second gear 24 to drive the toothed ring 20 to rotate. A balance weight 25 is fixedly installed at the end of the support rod 21 close to the mounting ring 2. The weight of the balance weight 25 is the same as the weight of the second motor 23. Two symmetrically distributed guide rings 32 are fixedly installed on the inside of the mounting bracket 1. The outside of the guide ring 32 is an arc structure. An annular groove for the guide ring 32 to slide and be limited is formed on the outside of the mounting ring 2, improving the smoothness of the rotation of the toothed ring 20 and the mounting ring 2.

[0038] In this embodiment: When the first motor 22 rotates, it can drive the square frame 3 to rotate with the support rod 21 as the fulcrum, enabling the square frame 3 to drive the fan bodies 5 on multiple positioning frames 4 to be adjusted synchronously, facilitating rapid simulation of flow measurement. Moreover, the second motor 23 can drive the toothed ring 20 to rotate through the second gear 24, enabling the toothed ring 20 to drive the mounting ring 2 to rotate between the inside of the mounting bracket 1 and the two guide rings 32, thereby driving the square frame 3 to rotate synchronously, facilitating rapid adjustment of the flow direction of the flow measurement, and thus facilitating rapid simulation of various airflow patterns.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind tunnel capable of simulating a multi-angle fan array, characterized in that: include: A mounting bracket and a mounting ring mounted on the inner side of the mounting bracket, a square frame is arranged on the inner side of the mounting ring, a plurality of equally spaced positioning frames are fixedly mounted on the inner side of the square frame, and a plurality of equally spaced fan bodies are arranged on the inner side of the positioning frames; Also includes: The clamping mechanism is used for quick assembly and disassembly of the fan body. The clamping mechanism is installed on the inner side of the positioning frame. The clamping mechanism includes a mounting frame arranged on the outer side of the fan body. Clamping frames are fixedly installed on both sides of the mounting frame. The inner side of the clamping frame contacts the outer side of the positioning frame. A pressure plate is slidably installed on the outer side of the positioning frame. The fan adjusting mechanism is used for quickly adjusting the angle of the fan body. The fan adjusting mechanism is installed on the inner side of the positioning frame. The fan adjusting mechanism includes two positioning rods symmetrically fixedly installed on the outer side of the fan body. The positioning rods are rotatably installed on the inner side of the mounting frame. A gear 1 is fixedly installed on the outer side of the positioning rod. A rack plate matched with the gear 1 is arranged on the outer side of the positioning rod. Push rods are fixedly installed on the top and bottom of the rack plate. A sleeve seat for limiting the sliding of the push rod is fixedly installed on the inner side of the clamping frame. A spring 2 is fixedly installed between the bottom of the rack plate and the adjacent sleeve seat. Two symmetrically distributed electric telescopic rods are fixedly installed on the top of the pressure plate. The output end of the electric telescopic rod contacts the top of the uppermost push rod. A flow regulating mechanism is used to adjust the rotational wind direction of the fan body. The flow regulating mechanism is installed on the inner side of the mounting bracket. The flow regulating mechanism includes a gear ring fixedly installed on the outer side of the mounting ring. A support rod is rotatably installed between the outer side of the square frame and the inner side of the mounting ring. Motor 1 is fixedly installed on the inner side of the mounting ring. The output end of motor 1 is fixedly connected to the side of the square frame away from the support rod. Motor 2 is fixedly installed on the outer side of the mounting bracket. Gear 2 is fixedly installed on the output end of motor 2. Gear 2 is located on the inner side of the mounting bracket. Gear 2 cooperates with the teeth on the outer side of the gear ring. A balancing block is fixedly installed on one end of the support rod close to the mounting ring.

2. A wind tunnel capable of simulating a multi-angle fan array according to claim 1, characterized in that: Three equally spaced arc plates are slidably installed on the inner side of the clamp frame, the arc-shaped concave surface on the outer side of the arc plate contacts the outer side of the positioning frame, a pull rod is fixedly installed between the three arc plates, an arc groove for limiting the sliding of the pull rod is opened on the outer side of the clamp frame, a magnet plate matching the arc plate is fixedly installed on the outer side of the clamp frame, the bottom of the pressure plate contacts the top of the uppermost installation frame, and two symmetrically distributed springs are fixedly installed between the top of the pressure plate and the top inner wall of the positioning frame.

3. A wind tunnel capable of simulating a multi-angle fan array according to claim 2, characterized in that: An insert block is slidably mounted on the inner side of the pressure plate, a plurality of slots for limiting insertion of the insert block are arranged on the outer side of the positioning frame, and a spring three is fixedly mounted between the insert block and the inner side of the pressure plate.

4. A wind tunnel capable of simulating a multi-angle fan array according to claim 2, characterized in that: Pull blocks are fixedly mounted on both ends of the pull rod, and the outer sides of the pull blocks are in contact with the outer sides of the clamping frame.

5. The wind tunnel capable of simulating a multi-angle fan array according to claim 2, characterized in that: Two symmetrically distributed arc-shaped guard plates are fixedly installed on the outer side of the pressure plate.

6. A wind tunnel capable of simulating a multi-angle fan array according to claim 2, characterized in that: Insertion rods are fixedly installed on the top and bottom of the installation frame, and insertion holes for limiting insertion of the insertion rods are opened on the top and bottom of the installation frame, and the insertion rods and the insertion holes are staggered.

7. The wind tunnel capable of simulating a multi-angle fan array according to claim 1, characterized in that: The top and the bottom of the installation frame are both fixedly mounted with guide cylinders for limiting the sliding of the push rod.

8. The wind tunnel capable of simulating a multi-angle fan array according to claim 1, characterized in that: Two symmetrically distributed guide rings are fixedly installed on the inner side of the mounting bracket, and an annular groove for limiting sliding of the guide ring is provided on the outer side of the mounting ring.

Images