Airplane model wind tunnel experiment model fixing mechanism

Abstract

The utility model discloses an airplane model wind tunnel experiment model fixing mechanism which comprises a bottom frame, a first fixing structure and a second fixing structure are detachably arranged on the bottom frame, the first fixing structure comprises a fixing block, a rotating frame, a connecting frame and a first suction cup, the two ends of the bottom frame are movably provided with fixing frames, and the fixing frames are connected with the rotating frame. A hook is fixedly arranged on the fixing frame; the second fixing structure comprises supporting blocks, a first supporting rod, a second supporting rod and a second suction cup, the multiple supporting blocks are arranged, connecting blocks are fixedly arranged at the lower ends of the supporting blocks and the lower end of the first supporting rod, threads are arranged on the outer sides of the connecting blocks, the second supporting rod is arranged on the first supporting rod, and the second suction cup is arranged on the second supporting rod. The aircraft is fixed and supported through the first fixing structure and the second fixing structure.

Description

Technical Field

[0001] The utility model relates to the field of aircraft manufacturing, and more specifically, to a wind tunnel test model fixing mechanism for an aircraft model. Background Art

[0002] Airplanes are very common in people's lives. Airplanes have greatly facilitated people's long-distance travel. Before the production and design of an aircraft, it is often necessary to make an aircraft model of the designed aircraft for wind tunnel testing to detect whether the aircraft's appearance and technical indicators meet the design requirements. When conducting wind tunnel tests on aircraft models, it is often necessary to fix the aircraft, so it is necessary to use a fixing mechanism to fix and support the aircraft model. The existing fixing mechanism is generally a fixed frame structure, which fixes and supports the aircraft in the frame. When conducting different wind tunnel test experiments, the aircraft needs to be fixed at different positions. The existing fixing structure cannot adjust the position connected to the aircraft according to the test needs, so it is inconvenient to fix and support the aircraft model. At the same time, the existing fixing structure can only fix and support the aircraft, and cannot adjust the fixed height of the aircraft, so it is inconvenient to adjust the fixing mechanism according to the test needs, and it is inconvenient to test the aircraft. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides an aircraft model wind tunnel test model fixing mechanism to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aircraft model wind tunnel test model fixing mechanism, comprising a base frame, on which a first fixing structure and a second fixing structure are detachably provided, the first fixing structure comprising a fixing block, a rotating frame, a connecting frame and a first suction cup, both ends of the base frame are movably provided with fixing frames, and a hook is fixedly provided on the fixing frame;

[0007] The second fixing structure includes a support block, a first support rod, a second support rod and a second suction cup. There are multiple support blocks. The lower ends of the support blocks and the first support rod are fixedly provided with connecting blocks. The outer sides of the connecting blocks are provided with threads. The second support rod is arranged on the first support rod. The aircraft is fixed and supported by the first fixing structure and the second fixing structure.

[0008] The utility model is further configured such that connecting holes are provided on both the base frame and the support block, and a plurality of connecting holes are provided on the base frame, and threads are provided in the connecting holes, and the connecting block and the connecting hole cooperate with each other, and an insertion rod is fixedly provided on the lower end of the fixed block, and the insertion rod and the connecting hole cooperate with each other, and the cooperation between the connecting hole and the connecting block facilitates the connection between the support blocks, the support blocks and the base frame, and the support blocks and the first support rod.

[0009] The utility model is further configured such that the rotating frame is arranged on the fixed block, the connecting frame is movably arranged on the rotating frame, the first suction cup is arranged on the connecting frame, a mounting plate is fixedly arranged on the fixed block, and the rotating frame is arranged between the two mounting plates, so as to facilitate the installation of the rotating frame on the fixed block.

[0010] The utility model is further configured such that the rotating frame is rotatably connected to the mounting plate, the mounting plate and the rotating frame are both provided with a first limiting hole, a plurality of the first limiting holes are provided, a first threaded rod is rotatably provided on the rotating frame, the first threaded rod passes through the connecting frame, and is threadedly connected to the connecting frame, thereby facilitating the change of the height of the connecting frame.

[0011] The utility model is further configured such that the first support rod is hollow inside, the second support rod is movably arranged inside the first support rod, positioning holes are provided on both the first support rod and the second support rod, and there are multiple positioning holes on the first support rod, and threads are provided in the positioning holes, so that the overall distance of the combination of the first support rod and the second support rod can be easily changed through the positioning holes.

[0012] The utility model is further configured such that the connecting frame and the second support block are both fixedly provided with extension pieces, and a plurality of extension pieces are provided. The first suction cup is provided between two extension pieces provided on the connecting frame, and the second suction cup is provided between two extension pieces provided on the second support rod, thereby facilitating the installation of the first suction cup and the second suction cup.

[0013] The utility model is further configured such that the first suction cup and the second suction cup are both rotatably connected to the extension piece, and the first suction cup, the second suction cup and the extension piece are each provided with a second limiting hole, and a plurality of second limiting holes are provided, so as to facilitate fixing the first suction cup and the second suction cup after changing the angle of the first suction cup and the second suction cup.

[0014] The utility model is further configured such that both ends of the base frame are movably provided with slide grooves, a moving block is provided in the slide groove, the moving block is slidably connected to the slide groove, the fixed frame is provided on the moving block and is rotatably connected to the moving block, a second threaded rod is provided in the slide groove, the second threaded rod passes through the moving block and is threadedly connected to the moving block, thereby driving the moving block and the fixed frame to move through the second threaded rod.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides an aircraft model wind tunnel test model fixing mechanism, which has the following beneficial effects:

[0017] 1. The utility model provides a first fixing structure and a second fixing structure at the upper end of the chassis and movably fixed frames at both ends of the chassis, and hooks are provided on the fixing frames. When it is necessary to fix different positions of the aircraft, the side end of the aircraft is fixed by the first fixing structure alone, and the bottom of the aircraft is supported by the second fixing structure alone, or the aircraft is suspended on the fixing frame by the cooperation of the hooks and slings provided on the fixing frame, so that different fixing and supporting methods can be selected according to different fixing and supporting needs, so that the entire model fixing mechanism can be adjusted according to different experimental requirements, thereby improving the applicability of the entire mechanism.

[0018] 2. The utility model sets a first threaded rod at the upper end of the rotating frame, and the first threaded rod rotates to drive the connecting frame set on the rotating frame to change its position, so that after the side end of the aircraft model is fixed, the first threaded rod is rotated to adjust the height of the aircraft. When the second fixing structure is used for fixing, the first support rod and the second support rod cooperate with each other and the second support rod extends out of the first support rod by different lengths, so as to change the overall height of the first support rod and the second support rod, thereby facilitating changing the height of the aircraft as needed, thereby facilitating experiments using the model fixing device.

[0019] 3. The utility model provides a rotatable connection between the first suction cup and the extension piece on the connecting frame, and provides a rotatable connection between the second suction cup and the extension piece on the second support rod, thereby facilitating adjustment of the angles of the first suction cup and the second suction cup according to the needs of the fixed position, facilitating the contact and adsorption of the first suction cup and the second suction cup with the surface of the aircraft, thereby facilitating the fixing and support of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a fixing mechanism for an aircraft model wind tunnel test model;

[0021] Figure 2 A schematic structural diagram of a first fixing structure of a fixing mechanism for an aircraft model wind tunnel test model;

[0022] Figure 3 It is a structural schematic diagram of a second fixing structure of a fixing mechanism for an aircraft model wind tunnel test model;

[0023] Figure 4 The schematic diagram of the structure of a chassis of a model fixing mechanism for a wind tunnel test of an aircraft model;

[0024] Figure 5 The utility model is a model fixing mechanism for an aircraft model wind tunnel experiment.

[0025] In the figure: 1. base frame; 2. fixed block; 3. rotating frame; 4. connecting frame; 5. first suction cup; 6. fixed frame; 7. hook; 8. support block; 9. first support rod; 10. second support rod; 11. second suction cup; 12. connecting hole; 13. plug rod; 14. mounting plate; 15. first limiting hole; 16. first threaded rod; 17. positioning hole; 18. extension plate; 19. second limiting hole; 20. slide groove; 21. moving block; 22. second threaded rod; 23. connecting block. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A model fixing mechanism for an airplane model wind tunnel experiment comprises a base frame 1, on which a first fixing structure and a second fixing structure are detachably arranged, the first fixing structure comprises a fixing block 2, a rotating frame 3, a connecting frame 4 and a first suction cup 5, and both ends of the base frame 1 are movably arranged with fixing frames 6, on which a hook 7 is fixedly arranged;

[0030] The second fixed structure includes a support block 8, a first support rod 9, a second support rod 10 and a second suction cup 11. The support block 8 is provided with multiple, and the lower ends of the support block 8 and the first support rod 9 are fixedly provided with a connecting block 23. The outer side of the connecting block 23 is provided with a thread, and the second support rod 10 is arranged on the first support rod 9.

[0031] In this embodiment, the aircraft model is fixed by the first fixing structure, the second fixing structure and the fixing frame 6 respectively.

[0032] More specifically, by cooperating with the support block 8, the first support rod 9 and the second support rod 10, the overall height of the second fixed structure is changed, thereby facilitating adjustment according to the required height of the aircraft.

[0033] See also Figure 1-Figure 5 As an implementation method of fixing the aircraft by the first fixing structure and the second fixing structure: the base frame 1 and the support block 8 are both provided with connecting holes 12, the base frame 1 is provided with a plurality of connecting holes 12, a thread is provided in the connecting hole 12, the connecting block 23 and the connecting hole 12 cooperate with each other, the lower end of the fixing block 2 is fixedly provided with an insertion rod 13, the insertion rod 13 and the connecting hole 12 cooperate with each other, the rotating frame 3 is provided on the fixing block 2, the connecting frame 4 is movably provided on the rotating frame 3, the first suction cup 5 is provided on the connecting frame 4, the fixing block 2 is fixedly provided with a mounting plate 14, the rotating frame 3 is provided between the two mounting plates 14, the rotating frame 3 and the mounting plate 14 are rotatably connected, the mounting plate 14 and the rotating frame 3 are both provided with a first limiting hole 15, a plurality of first limiting holes 15 are provided, and the rotating frame 3 is rotatably provided with a first threaded rod 1 6. The first threaded rod 16 passes through the connecting frame 4 and is threadedly connected to the connecting frame 4. The first support rod 9 is hollow inside, and the second support rod 10 is movably arranged inside the first support rod 9. The first support rod 9 and the second support rod 10 are each provided with a positioning hole 17, and there are multiple positioning holes 17 on the first support rod 9, and threads are arranged in the positioning hole 17. The connecting frame 4 and the second support block 8 are each fixedly provided with an extension piece 18, and there are multiple extension pieces 18. The first suction cup 5 is arranged between the two extension pieces 18 arranged on the connecting frame 4, and the second suction cup 11 is arranged between the two extension pieces 18 arranged on the second support rod 10. The first suction cup 5 and the second suction cup 11 are both rotatably connected to the extension piece 18. The first suction cup 5, the second suction cup 11 and the extension piece 18 are each provided with a second limiting hole 19, and there are multiple second limiting holes 19;

[0034] Specifically, when the aircraft is fixed by the first fixing structure, the first threaded rod 16 is rotated according to the height at which the aircraft needs to be fixed, and the connecting frame 4 is driven to change its position through the threaded connection between the first threaded rod 16 and the connecting frame 4, and the first suction cup 5 provided on the connecting frame 4 is matched with the fixed position on the aircraft model to connect the first suction cup 5 to the aircraft model, and the angle between the first suction cup 5 and the connecting frame 4 is changed through the rotational connection between the first suction cup 5 and the extension piece 18 to facilitate full contact between the first suction cup 5 and the aircraft model, and the bolt is inserted into the second limiting hole 19 to complete the fixation of the first suction cup 5, and the angle of the rotating frame 3 is changed through the rotational connection between the rotating frame 3 and the mounting piece 14 provided on the fixing block 2, and the bolt is inserted into the first limiting hole 15 to fix the angle of the rotating frame 3, and the insertion rod 13 is connected to the connecting frame 4. The fixing block 2 is installed on the base frame 1 by the cooperation of the connecting hole 12, so that the aircraft is fixed by the cooperation of several first fixing structures. When the second fixing structure is used to support the aircraft, according to the required height, the support block 8 is connected to the base frame 1 through the threaded cooperation of the connecting block 23 and the connecting hole 12, the support block 8 is connected to the support block 8, and the support block 8 is connected to the first support rod 9. The second support rod 10 is pulled out from the inside of the first support rod 9 as needed, and the bolt is inserted into the positioning hole 17 to fix the position of the second support rod 10. The angle of the second suction cup 11 is changed by the rotation connection between the second suction cup 11 and the extension piece 18 provided on the second support rod 10, and the bolt is inserted into the second limiting hole 19 to fix the angle of the second suction cup 11, so that the bottom of the aircraft is supported by the cooperation of multiple second fixing structures.

[0035] Please refer to Figure 1-5 As an implementation method of fixing the aircraft by the fixing frame 6: both ends of the base frame 1 are movably provided with a slide groove 20, a moving block 21 is provided in the slide groove 20, the moving block 21 is slidably connected with the slide groove 20, the fixing frame 6 is arranged on the moving block 21, and is rotatably connected with the moving block 21, a second threaded rod 22 is provided in the slide groove 20, the second threaded rod 22 passes through the moving block 21, and is threadedly connected with the moving block 21;

[0036] Specifically, the aircraft model is hung on the fixing frame 6 by the cooperation of the hook 7 provided on the fixing frame 6 and the sling, and the second threaded rod 22 is threadedly connected to the moving block 21, and the second threaded rod 22 is rotated to drive the moving block 21 to change its position, thereby changing the position of the fixing frame 6. The fixing frame 6 is rotatably connected to the moving block 21, so that when the fixing frame 6 is not in use, the protruding part of the fixing frame 6 can be rotated to leave the base frame 1, thereby reducing the influence of the fixing frame 6 on the fixation of the aircraft.

[0037] In summary, when used as a whole:

[0038] When the aircraft is fixed by the first fixing structure, the first threaded rod 16 is rotated according to the height at which the aircraft needs to be fixed, and the connecting frame 4 is driven to change its position through the threaded connection between the first threaded rod 16 and the connecting frame 4, and the first suction cup 5 provided on the connecting frame 4 is connected to the aircraft model through the cooperation with the fixed position on the aircraft model, and the angle between the first suction cup 5 and the connecting frame 4 is changed through the rotational connection between the first suction cup 5 and the extension piece 18, so as to facilitate full contact between the first suction cup 5 and the aircraft model, and the bolt is inserted into the second limiting hole 19 to complete the fixation of the first suction cup 5, and the angle of the rotating frame 3 is changed through the rotational connection between the rotating frame 3 and the mounting piece 14 provided on the fixing block 2, and the bolt is inserted into the first limiting hole 15 to fix the angle of the rotating frame 3, and the fixing block 2 is installed on the base frame 1 through the cooperation of the insertion rod 13 and the connecting hole 12, so that the aircraft is fixed through the cooperation of several first fixing structures.

[0039] When the second fixed structure is used to support the aircraft, according to the required height, the support block 8 is connected to the base frame 1 through the threaded cooperation of the connecting block 23 and the connecting hole 12, the support block 8 is connected to the support block 8, and the support block 8 is connected to the first support rod 9. The second support rod 10 is pulled out from the inside of the first support rod 9 as needed, and the bolt is inserted into the positioning hole 17 to fix the position of the second support rod 10. The angle of the second suction cup 11 is changed by the rotation connection between the second suction cup 11 and the extension piece 18 provided on the second support rod 10, and the bolt is inserted into the second limiting hole 19 to fix the angle of the second suction cup 11, thereby supporting the bottom of the aircraft through the cooperation of multiple second fixed structures.

[0040] When the aircraft is suspended by the fixing frame 6 , the aircraft model is suspended on the fixing frame 6 by the cooperation between the hook 7 provided on the fixing frame 6 and the sling.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An aircraft model wind tunnel test model fixing mechanism, comprising a base frame (1), characterized in that: The base frame (1) is detachably provided with a first fixing structure and a second fixing structure, the first fixing structure comprising a fixing block (2), a rotating frame (3), a connecting frame (4) and a first suction cup (5), both ends of the base frame (1) are movably provided with fixing frames (6), and a hook (7) is fixedly provided on the fixing frame (6); The second fixed structure comprises a support block (8), a first support rod (9), a second support rod (10) and a second suction cup (11); the support block (8) is provided in plurality; a connecting block (23) is fixedly provided at the lower end of each of the support block (8) and the first support rod (9); a thread is provided on the outer side of the connecting block (23); and the second support rod (10) is provided on the first support rod (9).

2. The aircraft model wind tunnel test model fixing mechanism according to claim 1, characterized in that: The base frame (1) and the support block (8) are both provided with connection holes (12), a plurality of connection holes (12) are provided on the base frame (1), threads are provided in the connection holes (12), the connection block (23) and the connection hole (12) cooperate with each other, and an insertion rod (13) is fixedly provided at the lower end of the fixing block (2), and the insertion rod (13) and the connection hole (12) cooperate with each other.

3. The aircraft model wind tunnel test model fixing mechanism according to claim 1 is characterized by: The rotating frame (3) is arranged on the fixed block (2), the connecting frame (4) is movably arranged on the rotating frame (3), the first suction cup (5) is arranged on the connecting frame (4), a mounting plate (14) is fixedly arranged on the fixed block (2), and the rotating frame (3) is arranged between two mounting plates (14).

4. The aircraft model wind tunnel test model fixing mechanism according to claim 3 is characterized by: The rotating frame (3) is rotatably connected to the mounting plate (14); the mounting plate (14) and the rotating frame (3) are both provided with a first limiting hole (15); a plurality of first limiting holes (15) are provided; a first threaded rod (16) is rotatably provided on the rotating frame (3); the first threaded rod (16) passes through the connecting frame (4) and is threadedly connected to the connecting frame (4).

5. The aircraft model wind tunnel test model fixing mechanism according to claim 1 is characterized by: The first support rod (9) is hollow inside, and the second support rod (10) is movably arranged inside the first support rod (9). Both the first support rod (9) and the second support rod (10) are provided with positioning holes (17). There are a plurality of positioning holes (17) on the first support rod (9), and threads are arranged inside the positioning holes (17).

6. The aircraft model wind tunnel test model fixing mechanism according to claim 1 is characterized by: The connecting frame (4) and the second supporting block (8) are both fixedly provided with an extension piece (18), and a plurality of the extension pieces (18) are provided. The first suction cup (5) is provided between two extension pieces (18) provided on the connecting frame (4), and the second suction cup (11) is provided between two extension pieces (18) provided on the second supporting rod (10).

7. The aircraft model wind tunnel test model fixing mechanism according to claim 6 is characterized by: The first suction cup (5) and the second suction cup (11) are both rotatably connected to the extension piece (18); the first suction cup (5), the second suction cup (11) and the extension piece (18) are each provided with a second limiting hole (19); and a plurality of second limiting holes (19) are provided.

8. The aircraft model wind tunnel test model fixing mechanism according to claim 1 is characterized by: Both ends of the base frame (1) are movably provided with a slide groove (20), a moving block (21) is provided in the slide groove (20), the moving block (21) is slidably connected to the slide groove (20), the fixed frame (6) is provided on the moving block (21) and is rotatably connected to the moving block (21), a second threaded rod (22) is provided in the slide groove (20), the second threaded rod (22) passes through the moving block (21) and is threadedly connected to the moving block (21).

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