A continuously adjustable air intake system for a super-large tornado wind tunnel

Abstract

The present invention discloses a continuously adjustable air intake system for a super-large tornado wind tunnel, comprising a plurality of correspondingly arranged deflector groups and a drive device. Each of the deflector groups comprises a plurality of tornado deflectors, a mounting frame, a drive shaft, and a drive wheel. The tornado deflectors are circumferentially spaced apart, the upper end of the drive shaft is fixedly connected to the drive wheel, and the lower end is fixedly connected to the tornado deflectors. The drive wheels of the same deflector group are synchronously driven, and the drive device is driven by a drive wheel within the deflector group. The present invention divides all the tornado deflectors into several groups, and drives one of the drive wheels within the deflector group through the drive device, and then drives the other tornado deflectors synchronously through the other drive wheels. That is, each deflector group rotates independently without interfering with each other, discretizing the drive, reducing the number of follow-up tornado deflectors, and making installation more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of wind tunnels, and in particular to a continuously adjustable air intake system for a super-large tornado wind tunnel. Background Art

[0002] The guide vane is an important component of aerodynamic rectification. After the airflow passes through the guide vane, the uniformity is improved and the turbulence is reduced. By adjusting the angle of the guide vane, the direction of the air intake can be effectively changed. It plays an important role in aerodynamic simulation tests.

[0003] Currently, wind tunnels, gust and tornado generators are the main equipment for aerodynamic simulation tests. Most guide vanes installed in wind tunnels are fixed, directly welded to the tunnel wall or connected with pins, and the installation angle of the guide vanes cannot be adjusted. Gust and tornado generators often use a connecting rod structure, where adjacent guide vanes are hinged via a connecting rod. A motor drives the connecting rod, which in turn rotates the guide vanes to adjust and rectify the airflow direction. However, this connecting rod mechanism is complex, requires high machining precision, and is difficult to install. The small tolerance between the hinge shafts makes it easy for the guide vanes to not fit properly or become stuck. The large tolerance between the hinge shafts affects the accuracy of the rotation angle, and the guide vane's installation angle adjustment range is limited by the size of the connecting rod. Therefore, this structure is not suitable for test equipment with a large number of guide vanes, a large installation cross-section, and a large installation adjustment angle. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a continuously adjustable air intake system for an ultra-large tornado wind tunnel.

[0005] In order to solve the above technical problems, the present invention discloses a super-large tornado wind tunnel continuously adjustable air intake system, including a plurality of correspondingly arranged guide vane groups and drive devices, any of the guide vane groups includes a plurality of tornado guide vanes, a mounting frame, a drive shaft and a drive wheel, the tornado guide vanes are arranged at intervals in annular direction, the upper end of the drive shaft is fixedly connected to the drive wheel, and the lower end is fixedly connected to the tornado guide vane, the drive wheels of the same guide vane group are driven synchronously, and the drive device is driven by a drive wheel in the guide vane group.

[0006] Furthermore, the driving wheels are two pulleys fixedly connected to the driving shaft, wherein one pulley is driven by a belt and a pulley on one side of the driving shaft, and the other pulley is driven by a belt and a pulley on the other side of the driving shaft.

[0007] Furthermore, the pulley is a synchronous pulley, and the belt is a synchronous belt that cooperates with the synchronous pulley.

[0008] Furthermore, an upper support plate and a lower support plate are provided in the mounting frame, an upper bearing seat is installed on the upper support plate, an upper bearing is installed in the upper bearing seat, a lower bearing seat is installed on the lower support plate, a lower bearing seat is installed in the lower bearing seat, the drive shaft cooperates with the upper bearing and the lower bearing, and the drive wheel is provided between the upper bearing seat and the lower bearing seat.

[0009] Furthermore, the driving device is a driving motor assembly with a reducer, the driving motor assembly is mounted on an upper bearing seat, and the output shaft of the driving motor assembly is coaxially fixed to the driving shaft.

[0010] Furthermore, the tornado deflector includes a support frame and a skin covering the outside of the support frame, the support frame includes a plurality of transverse support plates and vertical support tubes, the vertical support tubes vertically pass through the transverse support plates and are fixed to the transverse support plates.

[0011] Furthermore, one of the vertical support tubes of the support frame is a rotating tube, and the bottom of the drive shaft is inserted into the rotating tube and fixedly connected to the rotating tube.

[0012] Furthermore, it also includes a belt tensioning device, which includes a mounting seat and a tensioning wheel installed on the mounting seat, a tensioning wheel bracket and a tensioning drive member, the tensioning wheel is pivotally connected to the tensioning wheel bracket, and the tensioning drive member drives the tensioning wheel to rest against the belt.

[0013] Furthermore, the tensioning drive component includes a matching screw and an inner sleeve, the screw is threadedly connected to the threaded hole of the inner sleeve, and the tensioning wheel bracket is installed at the telescopic end of the screw.

[0014] Furthermore, the driving wheels are two sprockets fixedly connected to the driving shaft, wherein one sprocket is driven by a chain and a sprocket on one side of the driving shaft, and the other sprocket is driven by a chain and a sprocket on the other side of the driving shaft.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The present invention divides all tornado deflectors into several groups. One of the drive wheels in each group is used to drive the other tornado deflectors to rotate synchronously. This allows multiple deflectors in each group to rotate synchronously without interfering with adjacent groups. This discrete drive mechanism provides fast and efficient driving, avoids motion stagnation, reduces the number of tornado deflectors required, and facilitates installation. The simpler structure allows for wide angle adjustment and ensures precise installation of the tornado deflectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic front view of a continuously adjustable air intake system for a super-large tornado wind tunnel disclosed in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0020] Figure 3 for Figure 1 AA cross-sectional view of ;

[0021] Figure 4 for Figure 1 BB cross-sectional diagram;

[0022] Figure 5 for Figure 1 Schematic diagram of CC cross-section;

[0023] Figure 6 This is a schematic diagram of the cooperation between the belt tensioning device and the belt disclosed in an embodiment of the present invention.

[0024] Legend:

[0025] 1. Tornado deflector; 11. Support frame; 111. Horizontal support plate; 112. Vertical support tube; 12. Skin; 2. Mounting frame; 21. Upper support plate; 22. Lower support plate; 23. Upper bearing seat; 24. Upper bearing; 25. Lower bearing seat; 26. Lower bearing; 3. Drive shaft; 4. Drive wheel; 5. Drive motor assembly; 6. Belt tensioning device; 61. Mounting seat; 62. Tensioner; 63. Screw; 64. Inner sleeve; 65. Tensioner bracket; 8. Pin; 9. Pulley; 10. Belt. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described in more comprehensive and detailed form below in conjunction with the accompanying drawings and preferred embodiments. However, the protection scope of the present invention is not limited to the following specific embodiments.

[0027] like Figure 1-6As shown, the present invention discloses a continuously adjustable air intake system for a super-large tornado wind tunnel, comprising a plurality of correspondingly arranged deflector groups and a drive device. Each deflector group comprises a plurality of tornado deflectors 1, a mounting frame 2, a drive shaft 3, and a drive wheel 4. The tornado deflectors 1 are arranged circumferentially at intervals, the mounting frame 2 is fixedly mounted, the upper end of the drive shaft 3 is fixedly connected to the drive wheel 4, and the lower end is fixedly connected to the tornado deflector 1. The drive wheels 4 of the same deflector group are synchronously driven, and the drive device is driven by a drive wheel 4 within the deflector group. The present invention divides all the tornado deflectors 1 into several groups, and drives one of the drive wheels 4 in the deflector group through the drive device, and then drives the other tornado deflectors 1 synchronously through the other drive wheels 4. That is, each deflector group rotates independently without interfering with each other, discretizing the drive, making the drive fast and efficient, avoiding motion stagnation, reducing the number of tornado deflectors 1 that follow, and making installation more convenient. The structure is simpler, can achieve large angle adjustment, and is easy to ensure the installation accuracy of the tornado deflector 1.

[0028] In this embodiment, the drive wheel 4 is a pair of pulleys 9 fixed to the drive shaft 3 and mated with a key. One pulley 9 is driven by a belt 10 to the pulley 9 on one drive shaft 3, and the other pulley 9 is driven by a belt 10 to the pulley 9 on the other drive shaft 3. Thus, adjacent drive shafts 3 are sequentially connected via the belt 10, thereby achieving synchronous rotation of the tornado deflector 1. Specifically, the pulley 9 is a synchronous pulley, and the belt 10 is a synchronous belt that cooperates with the synchronous pulley. The synchronous belt and the synchronous pulley have a better meshing and anti-slip effect. Optionally, the drive wheel 4 is a pair of sprockets fixed to the drive shaft 3. One sprocket is driven by a chain to the sprocket on one drive shaft 3, and the other sprocket is driven by a chain to the sprocket on the other drive shaft 3. This can also achieve the effect of synchronous transmission.

[0029] In this embodiment, the mounting frame 2 is a cylindrical structure, which is provided with an upper support plate 21 and a lower support plate 22 with a central mounting hole. The upper support plate 21 is installed with an upper bearing seat 23, and an upper bearing 24 is installed in the upper bearing seat 23. The lower support plate 22 is installed with a lower bearing seat 25, and a lower bearing 26 is installed in the lower bearing seat 25. The drive shaft 3 cooperates with the upper bearing 24 and the lower bearing 26, and the drive wheel 4 is arranged between the upper bearing seat 23 and the lower bearing seat 25, thereby reducing the driving resistance of the drive shaft 3.

[0030] In this embodiment, the drive device is a drive motor assembly 5 with a reducer. The drive motor of the drive motor assembly 5 can preferably be a servo motor for precise drive. The drive motor assembly 5 is mounted on the upper bearing seat 23. The output shaft of the drive motor assembly 5 is coaxially fixed to the shaft hole of the drive shaft 3 through a key fit.

[0031] In this embodiment, the tornado deflector 1 includes a support frame 11 and a skin 12 covering the outside of the support frame 11. The skin 12 is fixed to the support frame 11 by riveting. The support frame 11 includes a plurality of transverse support plates 111 and vertical support tubes 112. The shape of the transverse support plates 111 matches the wedge-shaped cross-section of the tornado deflector 1. The vertical support tubes 112 vertically pass through the transverse support plates 111 and are welded to the transverse support plates 111.

[0032] In this embodiment, one of the vertical support tubes 112 of the support frame 11 is a rotating tube, which is the rotation center of the tornado deflector 1. The bottom of the drive shaft 3 is inserted into the rotating tube and fixedly connected to the rotating tube. Specifically, coaxial fixing is achieved by a radially penetrating pin shaft 8.

[0033] In this embodiment, to prevent the belt 10 from loosening, a belt tensioning device 6 is also included. The belt tensioning device 6 includes a mounting base 61, a tensioning pulley 62 mounted on the mounting base 61, a tensioning pulley bracket 65, and a tensioning drive. The tensioning pulley bracket 65 is a fork-like structure. The tensioning pulley 62 is pivotally connected to the tensioning pulley bracket 65. The tensioning drive drives the tensioning pulley 62 to abut against the belt 10. The tensioning drive can be driven by a spring tensioning drive, a cylinder tensioning drive, or an electric push rod tensioning drive. This embodiment adopts a manual adjustment method. Specifically, the tensioning drive includes a matching screw 63 and an inner sleeve 64. The screw 63 is threadedly connected to the threaded hole of the inner sleeve 64. The tensioning pulley bracket 65 is mounted on the telescopic end of the screw 63. The tightness of the contact between the tensioning pulley 62 and the belt 10 can be adjusted by rotating the screw 63.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A continuously adjustable air intake system for a super-large tornado wind tunnel, characterized in that: The invention comprises a plurality of correspondingly arranged guide vane groups and a driving device, wherein any of the guide vane groups comprises a plurality of tornado guide vanes (1), a mounting frame (2), a driving shaft (3) and a driving wheel (4), wherein the tornado guide vanes (1) are arranged at intervals in an annular direction, the upper end of the driving shaft (3) is fixedly connected to the driving wheel (4), and the lower end is fixedly connected to the tornado guide vane (1), the driving wheels (4) of the same guide vane group are synchronously driven, and the driving device is driven by a driving wheel (4) in the guide vane group; the driving wheel (4) is two pulleys (9) fixedly connected to the driving shaft (3), wherein one pulley (9) is driven by a belt (10) to the pulley (9) on one side of the driving shaft (3), and the other pulley (9) is driven by a belt (10) to the pulley (9) on the other side of the driving shaft (3).

2. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 1 is characterized in that: The pulley (9) is a synchronous pulley, and the belt (10) is a synchronous belt that cooperates with the synchronous pulley.

3. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 1 is characterized in that: An upper support plate (21) and a lower support plate (22) are provided in the mounting frame (2); an upper bearing seat (23) is installed on the upper support plate (21); an upper bearing (24) is installed in the upper bearing seat (23); a lower bearing seat (25) is installed on the lower support plate (22); a lower bearing (26) is installed in the lower bearing seat (25); the drive shaft (3) cooperates with the upper bearing (24) and the lower bearing (26); and the drive wheel (4) is provided between the upper bearing seat (23) and the lower bearing seat (25).

4. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 3 is characterized in that: The driving device is a driving motor assembly (5) with a reducer. The driving motor assembly (5) is mounted on an upper bearing seat (23). The output shaft of the driving motor assembly (5) is coaxially fixed to the driving shaft (3).

5. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 1 is characterized in that: The tornado deflector (1) comprises a support frame (11) and a skin (12) covering the outside of the support frame (11); the support frame (11) comprises a plurality of transverse support plates (111) and vertical support tubes (112); the vertical support tubes (112) vertically pass through the transverse support plates (111) and are fixedly connected to the transverse support plates (111).

6. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 5 is characterized in that: One of the vertical support tubes (112) of the support frame (11) is a rotating tube, and the bottom of the drive shaft (3) is inserted into the rotating tube and fixedly connected to the rotating tube.

7. The continuously adjustable air intake system for a super-large tornado wind tunnel according to any one of claims 1 to 6, characterized in that: The belt tensioning device (6) further comprises a mounting seat (61), a tensioning wheel (62) mounted on the mounting seat (61), a tensioning wheel bracket (65), and a tensioning drive member, wherein the tensioning wheel (62) is pivotally connected to the tensioning wheel bracket (65), and the tensioning drive member drives the tensioning wheel (62) to abut against the belt (10).

8. The continuously adjustable air intake system for a super-large tornado wind tunnel according to claim 7 is characterized in that: The tensioning drive member comprises a matching screw rod (63) and an inner sleeve (64), the screw rod (63) is threadedly connected to the threaded hole of the inner sleeve (64), and the tensioning wheel bracket (65) is installed at the telescopic end of the screw rod (63).

9. The continuously adjustable air intake system for a super-large tornado wind tunnel according to any one of claims 1 to 6, characterized in that: The driving wheels (4) are two sprockets fixedly connected to the driving shaft (3), wherein one sprocket is driven by a chain and a sprocket on one side of the driving shaft (3), and the other sprocket is driven by a chain and a sprocket on the other side of the driving shaft (3).

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