Adjustable open type wind tunnel testing device

Abstract

The invention relates to the technical field of wind tunnel testing, and discloses an adjustable open type wind tunnel testing device which comprises a testing upper box body and a first testing lower box body, the testing upper box body and the first testing lower box body are fixedly connected through bolts, and the inner wall of the testing upper box body is fixedly connected with a mounting frame. A plurality of groups of wind tunnel modules are arranged in the mounting frame, each wind tunnel module is composed of a mounting frame and six fans, a driving motor is arranged on one side of each fan, a mounting plate is fixedly connected to one side of the mounting frame, a plurality of clamping holes are formed in one side of the mounting plate, mounting holes are formed in the outer side of the mounting plate, and butt joint holes are formed in one sides of the fans. According to the invention, through the arrangement of the adjustable wind tunnel module and the modular design, the flexible adjustment of the test environment is realized, so that the complex airflow environment in the actual flight of the unmanned aerial vehicle is simulated more accurately, and the wind tunnel test device is more flexible, occupies a smaller area and is more suitable for various test scene requirements.

Description

Technical Field

[0001] The invention relates to the technical field of wind tunnel testing, in particular to an adjustable open wind tunnel testing device. Background Art

[0002] Wind tunnel tests have many functions in engineering and teaching, including aerodynamic performance evaluation. Wind tunnel tests can be used to evaluate the aerodynamic performance of objects in airflow, such as lift, drag, aerodynamic stability, etc. Most of them are currently used for testing drones.

[0003] At present, the UAV flight environment is a typical unsteady airflow environment, including gusts, shear wind, time-varying wind, etc. The existing wind tunnel test equipment can only provide a steady and uniform airflow test environment during use. The test flight airflow environment in the natural environment cannot be repeated and controlled. In addition, the test site requirements are high, the site occupies a large area, and it cannot be modularly designed according to needs, which affects the effect of the wind tunnel test. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides an adjustable open wind tunnel test device, which is mainly used to solve the problems that the existing wind tunnel test device can only provide a steady and uniform airflow test environment during use, the airflow environment for test flights in a natural environment cannot be repeated and controlled, and the test site requirements are high, the site occupies a large area, and it cannot be modularly designed according to needs.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An adjustable open wind tunnel testing device comprises an upper test box and a first lower test box, wherein the upper test box and the first lower test box are fixedly connected by bolts, an inner wall of the upper test box is fixedly connected with a mounting frame, and a plurality of wind tunnel modules are arranged in the mounting frame, the wind tunnel modules are composed of a mounting frame and six fans, one side of each fan is provided with a driving motor, one side of the mounting frame is fixedly connected with a mounting plate, and one side of the mounting plate is provided with a plurality of clamping holes, an outer side of the mounting plate is provided with a mounting hole, one side of the fan is provided with a docking hole, and the docking hole and the mounting hole are fixed by bolts, the fans are all on the same plane with the clamping holes, and a control cabinet and a power supply cabinet are respectively fixedly connected to the inner side of the first lower test box.

[0009] Furthermore, a triangular groove is provided on one side of the mounting plate, a plurality of wire pressing plates are fixedly connected to the outer surface of the mounting frame, a plurality of wire grooves are provided on the outer wall of one side of the mounting frame, and a cover plate is fixedly connected to the outer surface of the wire groove, one end of the wire groove is connected to one end of the wire pressing plate, the bottom of the mounting frame is fixedly connected to a base plate, and a through hole is provided on the top of the base plate, and the other end of the wire groove is connected to the through hole.

[0010] On the basis of the above-mentioned solution, an industrial computer and a switch are arranged inside the control cabinet, and a box cover is fixedly connected to one side of the control cabinet and the power cabinet.

[0011] As a further solution of the present invention, a power plug is provided on one side of the first test lower box, and the power plug is connected to the industrial computer, the switch and the plurality of fans through wires.

[0012] Furthermore, a lithium battery box is provided inside the power cabinet, and the lithium battery box is electrically connected to the industrial computer, the switch and multiple fans respectively, the industrial computer and the switch are connected through a signal line, and the switch and the multiple fans are connected through a signal line.

[0013] On the basis of the above solution, a wind speed sensor is fixedly connected to the air outlet of the fan.

[0014] As a further solution of the present invention, a second test lower box is provided at the bottom of the test upper box, and the second test lower box is located directly above the support frame.

[0015] Furthermore, second fixing plates are fixedly connected to both sides of the top of the second test lower box, and first fixing plates are fixedly connected to both side outer walls of the test upper box. One side of the first fixing plate and the second fixing plate are rotatably connected to self-locking clamps, and the same telescopic bracket is fixedly connected between the two self-locking clamps.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides an adjustable open wind tunnel test device, which has the following beneficial effects:

[0018] 1. The present invention realizes flexible adjustment of the test environment by setting adjustable wind tunnel modules and modular design, so as to more accurately simulate the complex airflow environment in the actual flight of the UAV. The multiple groups of wind tunnel modules arranged in the installation frame can be quantitatively configured according to the test requirements by means of bolt connection, and each wind tunnel module is composed of six fans, which can produce a variety of airflow changes, simulate unsteady airflow states such as gusts, shear winds, and time-varying winds, and improve the accuracy and pertinence of the test. In addition, the upper and lower test boxes can be adjusted by bolt connection, realizing a modular design, making the wind tunnel test device more flexible, easy to operate, and occupying a smaller area, which is more suitable for a variety of test scene requirements.

[0019] 2. The present invention uses a small wire pressing plate to fix the female wire of the fan on the mounting frame on the wind wall module, and routes the wires through the triangular groove of the fan without affecting the air intake of the fan. The male wire end of each fan passes through the wire groove and perforation to the power cabinet and control cabinet below. The line is hidden in the design, and no line can be seen from the outside. This not only improves the aesthetics of the wind tunnel test device, but also does not interfere with the incoming airflow and affect the test effect of the drone.

[0020] 3. The present invention can flip and fold the wind tunnel test device, and can blow the airflow upward, avoiding the problem of testing only one angle at a time, and can change the angle, thereby improving the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an adjustable open wind tunnel test device embodiment 1 proposed by the present invention;

[0022] Figure 2 A rear view structural schematic diagram of an adjustable open wind tunnel testing device embodiment 1 proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the explosion structure of an adjustable open wind tunnel test device embodiment 1 proposed by the present invention;

[0024] Figure 4 A schematic diagram of a three-dimensional structure of a modular wind wall of an adjustable open wind tunnel test device embodiment 1 proposed by the present invention;

[0025] Figure 5 A schematic diagram of a modular wind wall explosion structure of an adjustable open wind tunnel test device embodiment 1 proposed by the present invention;

[0026] Figure 6 A schematic diagram of the signal flow structure of an adjustable open wind tunnel test device embodiment 1 proposed by the present invention

[0027] Figure 7 A schematic diagram of the three-dimensional structure of an adjustable open wind tunnel test device embodiment 2 proposed by the present invention;

[0028] Figure 8 A rear view structural schematic diagram of an adjustable open wind tunnel testing device embodiment 2 proposed by the present invention;

[0029] Fig. 9 This is a schematic diagram of the folded state structure of Example 2 of an adjustable open wind tunnel testing device proposed by the present invention.

[0030] In the figure: 1. test upper box; 2. first test lower box; 201. control cabinet; 2011. industrial computer; 2012. switch; 202. power cabinet; 2021. lithium battery box; 3. box cover; 4. mounting frame; 5. mounting frame; 501. mounting plate; 502. card hole; 503. triangular groove; 504. mounting hole; 505. docking hole; 506. fan; 507. wind speed sensor; 6. wire pressing plate; 7. wire trough; 8. cover plate; 9. perforation; 10. bottom plate; 11. power plug; 12. support frame; 13. second test lower box; 14. first fixing plate; 15. second fixing plate; 16. telescopic bracket; 17. self-locking clamp. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] Reference Figure 1-Figure 6, an adjustable open wind tunnel test device, comprising a test upper box 1 and a first test lower box 2, the test upper box 1 and the first test lower box 2 are fixedly connected by bolts, characterized in that the inner wall of the test upper box 1 is fixed with a mounting frame 4 by bolts, and a plurality of wind tunnel modules are arranged in the mounting frame 4, the wind tunnel module is composed of a mounting frame 5 and six fans 506, each wind tunnel module is composed of six fans 506, which can generate a variety of airflow changes, simulate unsteady airflow states such as gusts, shear winds, time-varying winds, etc., and improve the accuracy and pertinence of the test, and a driving motor is provided on one side of the fan 506, which can be driven by controlling the driving motor. The speed of the motor is controlled to control the wind speed of the fan 506. A mounting plate 501 is welded on one side of the mounting frame 5, and a plurality of clamping holes 502 are provided on one side of the mounting plate 501. A mounting hole 504 is provided on the outer side of the mounting plate 501. A docking hole 505 is provided on one side of the fan 506, and the docking hole 505 and the mounting hole 504 are fixed by bolts. The fan 506 and the clamping hole 502 are on the same plane. A wind speed sensor 507 is fixed to the air outlet of the fan 506 by bolts. The model of the wind speed sensor 507 is QS-FS. In the first test, the control cabinet 201 and the power cabinet 202 are fixed to the inner side of the lower box 2 by bolts respectively.

[0034] A triangular groove 503 is provided on one side of the mounting plate 501, a plurality of wire pressing plates 6 are fixed to the outer surface of the mounting frame 5 by bolts, a plurality of wire grooves 7 are provided on the outer wall of one side of the mounting frame 4, and a cover plate 8 is fixed to the outer surface of the wire groove 7 by bolts, one end of the wire groove 7 is connected to one end of the wire pressing plate 6, a bottom plate 10 is fixed to the bottom of the mounting frame 4 by bolts, and a through hole 9 is provided on the top of the bottom plate 10, and the other end of the wire groove 7 is connected to the through hole 9, and an industrial computer 2011 and a switch 2012 are provided inside the control cabinet 201, and the control cabinet 201 and A box cover 3 is fixed to one side of the power cabinet 202 by bolts, and a power plug 11 is provided on one side of the first test lower box 2. The power plug 11 is connected to the industrial computer 2011, the switch 2012 and multiple fans 506 through wires. A lithium battery box 2021 is provided inside the power cabinet 202, and the lithium battery box 2021 is electrically connected to the industrial computer 2011, the switch 2012 and multiple fans 506 respectively. The industrial computer 2011 and the switch 2012 are connected through a signal line, and the switch 2012 and the multiple fans 506 are connected through a signal line.

[0035] Working principle of this embodiment: when it is necessary to use a wind tunnel test device, first, six fans 506 and a mounting frame 5 form a wind wall module. The wind wall module can be increased or decreased according to user needs, and can be freely customized according to user needs. It is a beneficial alternative to traditional wind tunnels. The female head line of each fan 506 is fixed to the mounting frame 5 on the wind wall module using a small wire pressing plate 6, and the line is routed from the triangular groove 503 of the fan 506 without affecting the air intake of the fan 506. Then, the male line end of each fan 506 passes through the wire groove 7 and the perforation 9 to the power cabinet 202 and the control cabinet 201 below. The line is hidden in the design, and no line can be seen from the outside. Then, a wind speed sensor 507 is provided on one side of the fan 506, which can monitor the wind speed of the fan 506 in real time, and then transmit the signal to the industrial computer 2011. The industrial computer 2011 controls multiple switches 2012, and multiple fans 506 can be controlled by one switch 2012. The drive motor on one side of the fan 506 can be controlled to control the wind speed, thereby enabling switching between different airflow test environments.

[0036] Example 2

[0037] Reference Figure 7-Figure 9 An adjustable open wind tunnel test device, a second test lower box 13 is provided at the bottom of the test upper box 1, the second test lower box 13 is located directly above the support frame 12, and second fixing plates 15 are fixed to the top of the second test lower box 13 by bolts on both sides, and first fixing plates 14 are fixed to the outer walls of the two sides of the test upper box 1 by bolts, one side of the first fixing plate 14 and the second fixing plate 15 are rotatably connected with a self-locking clamp 17, and the same 16 telescopic bracket is fixed between the two self-locking clamps 17 by bolts.

[0038] The working principle of this embodiment is as follows: a support frame 12 is set at the bottom of the test device. By rotating the self-locking clamp 17 on the first fixed plate 14 and the second fixed plate 15, the wind tunnel test device can be flipped and folded under the action of the telescopic bracket 16, and the airflow can be blown upward, avoiding the problem of only testing one angle at a time, and the angle can be changed, thereby improving the test effect.

[0039] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0040] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable open wind tunnel test device, comprising a test upper box (1) and a first test lower box (2), wherein the test upper box (1) and the first test lower box (2) are fixedly connected by bolts, characterized in that: The inner wall of the test upper box (1) is fixedly connected to a mounting frame (4), and a plurality of wind tunnel modules are arranged in the mounting frame (4), the wind tunnel modules are composed of a mounting frame (5) and six fans (506), one side of each fan (506) is provided with a driving motor, one side of the mounting frame (5) is fixedly connected to a mounting plate (501), and one side of the mounting plate (501) is provided with a plurality of clamping holes (502), the outer side of the mounting plate (501) is provided with a mounting hole (504), one side of the fan (506) is provided with a docking hole (505), and the docking hole (505) and the mounting hole (504) are fixed by bolts, and the fans (506) and the clamping holes (502) are all on the same plane, and the inner side of the first test lower box (2) is respectively fixedly connected to a control cabinet (201) and a power cabinet (202).

2. The adjustable open wind tunnel test device according to claim 1, characterized in that: A triangular groove (503) is provided on one side of the mounting plate (501); a plurality of wire pressing plates (6) are fixedly connected to the outer surface of the mounting frame (5); a plurality of wire grooves (7) are provided on the outer wall of one side of the mounting frame (4); a cover plate (8) is fixedly connected to the outer surface of the wire groove (7); one end of the wire groove (7) is connected to one end of the wire pressing plate (6); a bottom plate (10) is fixedly connected to the bottom of the mounting frame (4); a through hole (9) is provided on the top of the bottom plate (10); and the other end of the wire groove (7) is connected to the through hole (9).

3. The adjustable open wind tunnel test device according to claim 1, characterized in that: An industrial computer (2011) and a switch (2012) are arranged inside the control cabinet (201), and a box cover (3) is fixedly connected to one side of the control cabinet (201) and the power cabinet (202).

4. The adjustable open wind tunnel test device according to claim 1, characterized in that: A power plug (11) is provided on one side of the first test lower box (2), and the power plug (11) is connected to the industrial computer (2011), the switch (2012), a plurality of wind speed sensors (507) and a plurality of fans (506) via wires.

5. The adjustable open wind tunnel test device according to claim 1, characterized in that: A lithium battery box (2021) is provided inside the power cabinet (202), and the lithium battery box (2021) is electrically connected to the industrial computer (2011), the switch (2012) and the plurality of fans (506) respectively; the industrial computer (2011) and the switch (2012) are connected via a signal line, and the switch (2012) and the plurality of fans (506) are connected via a signal line.

6. The adjustable open wind tunnel test device according to claim 5, characterized in that: The air outlet of the fan (506) is fixedly connected to a wind speed sensor (507), and the plurality of wind speed sensors (507) are electrically connected to the lithium battery box (2021).

7. The adjustable open wind tunnel test device according to claim 1, characterized in that: A second test lower box (13) is provided at the bottom of the test upper box (1), and the second test lower box (13) is located directly above the support frame (12).

8. The adjustable open wind tunnel test device according to claim 7, characterized in that: The second test lower box (13) is fixedly connected to the top sides with second fixing plates (15), and the outer walls on both sides of the test upper box (1) are fixedly connected to the first fixing plates (14). One side of the first fixing plate (14) and the second fixing plate (15) are both rotatably connected to self-locking clamps (17), and the same (16) telescopic bracket is fixedly connected between the two self-locking clamps (17).

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