An automatic retractable guide vane for a tornado wind tunnel

Abstract

The present invention discloses an automatic telescopic deflector for a tornado wind tunnel and a rail transit equipment compartment thereof, comprising a fixed deflector and a telescopic deflector, wherein the fixed deflector comprises a fixed support frame, a drive shaft, a telescopic drive assembly, and a fixed deflector, wherein the drive shaft is fixedly connected to the fixed support frame, and the fixed deflector covers the fixed support frame, and the telescopic deflector comprises a telescopic support frame and a telescopic deflector covering the telescopic support frame, wherein the telescopic deflector is sleeved with the fixed deflector, and the drive end of the telescopic drive assembly is connected to the telescopic deflector. The present invention allows the telescopic deflector to be driven by the telescopic drive assembly to slide up and down relative to the fixed deflector, thereby controlling the deflection area of ​​the tornado formation entrance, and further enabling real-time adjustment of some parameters of the tornado, thereby facilitating precise control of tornado formation and facilitating the smooth progress of subsequent experiments and research.

Description

Technical Field

[0001] The invention relates to the technical field of wind tunnels, and in particular to an automatic telescopic guide vane used in a tornado wind tunnel. Background Art

[0002] Tornadoes are extreme weather phenomena with immense destructive power. Currently, research on tornado wind field characteristics primarily relies on field measurements, theoretical analysis, laboratory physical simulations, and numerical simulations. Most laboratory physical simulations are based on the principles of Ward-type simulation systems.

[0003] To create a tornado, deflectors are typically placed around the bottom air inlet. These deflectors have a teardrop-shaped (or wedge-shaped) cross-section, consisting of two diverter flanks and a connecting arc connecting the two flanks. Currently, both the diverter flanks and the connecting arc have fixed lengths and widths, making them less suitable for online automatic adjustment of tornado parameters. 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 an automatically retractable guide vane for a tornado wind tunnel.

[0005] In order to solve the above technical problems, the present invention discloses an automatic telescopic guide vane for a tornado wind tunnel, comprising a fixed guide part and a telescopic guide part, the fixed guide part comprising a fixed support frame, a drive shaft, a telescopic drive assembly and a fixed guide vane, the drive shaft is fixedly connected to the fixed support frame, the fixed guide vane is covered outside the fixed support frame, the telescopic guide part comprises a telescopic support frame and a telescopic guide vane covering outside the telescopic support frame, the telescopic guide vane is socketed with the fixed guide vane, and the driving end of the telescopic drive assembly drives the telescopic guide vane to telescopically move relative to the fixed guide vane.

[0006] Furthermore, the telescopic drive assembly includes a screw and nut assembly installed on the fixed support frame, and the telescopic end of the screw and nut assembly is connected to the telescopic support frame.

[0007] Furthermore, guide rods are installed on both sides of the telescopic drive assembly, one end of the guide rod is fixedly connected to the telescopic support frame, and the other end is slidably connected to the fixed support frame.

[0008] Furthermore, a contraction drive assembly is installed on the telescopic support frame for driving the telescopic guide vane to contract toward the center so as to be inserted into the fixed guide vane.

[0009] Furthermore, the telescopic guide plate includes a U-shaped transversely movable guide plate and two longitudinally movable guide plates, the longitudinally movable guide plate is docked at both ends of the U-shaped transversely movable guide plate, the contraction drive assembly includes a first longitudinal telescopic member, a second longitudinal telescopic member, a first transverse telescopic member, a second transverse telescopic member, a first transverse slider and a second transverse slider, the first longitudinal telescopic member is installed on the first transverse slider, the longitudinally movable guide plate is connected to the telescopic end of the first longitudinal telescopic member and is fixed to the first transverse slider, the planar portions on both sides of the U-shaped transversely movable guide plate are connected to the telescopic end of the second longitudinal telescopic member, one end of the second transverse slider is connected to the arc portion of the U-shaped transversely movable guide plate, and the other end is connected to the telescopic end of the second transverse telescopic member, and the second longitudinal telescopic member is installed on the second transverse slider.

[0010] Furthermore, the first longitudinal telescopic member, the second longitudinal telescopic member, the first transverse telescopic member and the second transverse telescopic member all adopt electric push rods.

[0011] Furthermore, the first transverse slider and the second transverse slider are provided with strip-shaped guide holes, and the telescopic support frame is provided with guide columns that cooperate with the strip-shaped guide holes.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The present invention can drive the relatively fixed guide part to slide up and down through the telescopic guide plate through the telescopic drive assembly, thereby controlling the guide area of ​​the tornado formation entrance, and then can adjust some parameters of the tornado in real time, which is convenient for precise control of the tornado formation and the smooth progress of subsequent experiments and research. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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:

[0015] Figure 1 This is a first isometric schematic diagram of an automatically retractable guide vane for a tornado wind tunnel disclosed in an embodiment of the present invention;

[0016] Figure 2 This is a second isometric schematic diagram of the automatically retractable deflector for a tornado wind tunnel disclosed in an embodiment of the present invention (with the fixed deflector hidden);

[0017] Figure 3 This is an axonometric diagram of the telescopic guide portion disclosed in an embodiment of the present invention;

[0018] Figure 4 This is an axonometric diagram of a contraction drive assembly disclosed in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the telescopic principle of the telescopic guide vane disclosed in an embodiment of the present invention.

[0020] Legend:

[0021] 1. Fixed guide part; 11. Fixed support frame; 12. Drive shaft; 13. Telescopic drive assembly; 131. Screw nut assembly; 14. Fixed guide vane; 15. Guide rod; 2. Telescopic guide part; 21. Telescopic support frame; 22. Telescopic guide vane; 221. U-shaped transverse movable guide vane; 222. Longitudinal movable guide vane; 23. Contraction drive assembly; 231. First longitudinal telescopic member; 232. Second longitudinal telescopic member; 233. First transverse telescopic member; 234. Second transverse telescopic member; 235. First transverse slider; 236. Second transverse slider; 237. Strip guide hole; 24. Guide column. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, the present invention discloses an automatically retractable deflector for a tornado wind tunnel, comprising a fixed deflector 1 and a retractable deflector 2. The fixed deflector 1 comprises a fixed support frame 11, a drive shaft 12, a retractable drive assembly 13, and a fixed deflector 14. The drive shaft 12 is fixedly connected to the fixed support frame 11 and is used to drive the overall deflection angle of the deflector. The fixed deflector 14 covers the fixed support frame 11 and is riveted using a conventional metal skin. The fixed support frame 11 is used to support and form the shape of the deflector. The retractable deflector 2 comprises a retractable support frame 21 and a retractable deflector 22 covering the retractable support frame 21. The retractable deflector 22 is sleeved with the fixed deflector 14 to facilitate relative retractable movement. The drive end of the retractable drive assembly 13 drives the retractable deflector 22 to retract and retract upward and downward. Thus, the telescopic guide plate 22 can be driven by the telescopic drive assembly 13 to slide up and down relative to the fixed guide part 1, thereby controlling the guide area of ​​the tornado formation entrance, and then some parameters of the tornado can be adjusted in real time, which is convenient for precise control of the formation of the tornado and the smooth progress of subsequent experiments and research.

[0024] In this embodiment, in order to achieve efficient and convenient telescopic drive, the telescopic drive assembly 13 includes a screw nut assembly 131 installed on the fixed support frame 11. The screw nut assembly 131 includes a motor, a nut and a screw. The motor drives the nut to rotate, and the nut in turn drives the screw to reciprocate. The telescopic end of the screw nut assembly 131 is connected to the telescopic support frame 21, and then drives the telescopic support frame 21 to move up and down, thereby driving the telescopic guide plate 22 to move synchronously.

[0025] In this embodiment, in order to ensure the vertical telescopic accuracy, guide rods 15 are installed on both sides of the telescopic drive assembly 13. The guide rods 15 can adopt a cylindrical rod structure to achieve linear guidance. One end of the guide rod 15 is fixedly connected to the telescopic support frame 21, and the other end is slidably connected to the through hole on the fixed support frame 11.

[0026] In this embodiment, the telescopic support frame 21 is equipped with a retracting drive assembly 23 for driving the telescopic guide plate 22 to retract toward the center so that it can be inserted into the fixed guide plate 14. That is, the retracting drive assembly 23 can cause the telescopic guide plate 22 to shrink toward the center, so that it can be retracted into the fixed guide plate 14 like a drawer-like structure, thereby playing a role in controlling the guide area of ​​the guide plate. Specifically, in this embodiment, see Figure 3 and 5 The telescopic guide plate 22 is a split structure, including a U-shaped transverse movable guide plate 222 and two longitudinal movable guide plates 221. The longitudinal movable guide plate 221 is docked at both ends of the U-shaped transverse movable guide plate 222. The contraction drive assembly 23 includes a first longitudinal telescopic member 231, a second longitudinal telescopic member 232, a first transverse telescopic member 233, a second transverse telescopic member 234, a first transverse slider 235 and a second transverse slider 236. The first longitudinal telescopic member 231, the second longitudinal telescopic member 232, the first transverse telescopic member 233 and the second transverse telescopic member 234 all adopt electric push rods. The first transverse The telescopic directions of the telescopic member 233 and the second transverse telescopic member 234 are opposite. The first longitudinal telescopic member 231 is installed on the first transverse slider 235. The longitudinal movable guide plate 221 is connected to the telescopic end of the first longitudinal telescopic member 231 and is fixed to the first transverse slider 235. The flat portions on both sides of the U-shaped transverse movable guide plate 222 are connected to the telescopic end of the second longitudinal telescopic member 232. One end of the second transverse slider 236 is connected to the arc portion of the U-shaped transverse movable guide plate 222, and the other end is connected to the telescopic end of the second transverse telescopic member 234. The second longitudinal telescopic member 232 is installed on the second transverse slider 236.

[0027] In the specific control process, the first longitudinal telescopic member 231 is first controlled to drive the longitudinal movable guide vanes 221 on both sides to move toward the center, causing the longitudinal movable guide vanes 221 to partially elastically deform by about 20 mm (they return to their original state after the push rod is pushed out 20 mm); then the first transverse telescopic member 233 is driven to cause the longitudinal movable guide vanes 221 on both sides to move 10 mm to the left, and the longitudinal movable guide vanes 221 are inserted leftward into the U-shaped transverse movable guide vanes 222; then the second longitudinal telescopic member 232 is controlled to drive the flat portions on both sides of the U-shaped transverse movable guide vanes 222 to reduce their displacement by 10 mm (they return to their original state after the push rod is pushed out 10 mm); finally, the second transverse telescopic member 234 drives the U-shaped transverse movable guide vanes 222 to move 10 mm to the right, at which point the telescopic guide part 2 is driven to complete the telescopic movement in the vertical direction. Thus, the alignment of the guide planes of the fixed guide part 1 and the telescopic guide part 2 before the vertical telescopic movement is ensured, avoiding the influence and interference of misalignment and unevenness on the input air. At the same time, it can also ensure that the telescopic guide part 2 is inserted into the fixed guide part 1 after being "shrinked".

[0028] In this embodiment, in order to ensure the lateral deformation accuracy of the U-shaped lateral movable guide plate 222 and the two longitudinal movable guide plates 221, a strip guide hole 237 is provided on the first lateral slider 235 and the second lateral slider 236, and a guide column 24 that cooperates with the strip guide hole 237 is provided on the telescopic support frame 21.

[0029] 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. An automatic retractable guide vane for a tornado wind tunnel, characterized in that: The invention comprises a fixed guide portion (1) and a telescopic guide portion (2), wherein the fixed guide portion (1) comprises a fixed support frame (11), a drive shaft (12), a telescopic drive assembly (13) and a fixed guide plate (14), wherein the drive shaft (12) is fixedly connected to the fixed support frame (11), and the fixed guide plate (14) is covered outside the fixed support frame (11); the telescopic guide portion (2) comprises a telescopic support frame (21) and a telescopic guide plate (22) covered outside the telescopic support frame (21), wherein the telescopic guide plate (22) is sleeved with the fixed guide plate (14), and the drive end of the telescopic drive assembly (13) drives the telescopic guide plate (22) to move ... 2) telescopic movement relative to the fixed guide vane (14); the telescopic drive assembly (13) includes a screw nut assembly (131) mounted on the fixed support frame (11), and the telescopic end of the screw nut assembly (131) is connected to the telescopic support frame (21); guide rods (15) are mounted on both sides of the telescopic drive assembly (13), one end of the guide rod (15) is fixedly connected to the telescopic support frame (21), and the other end is slidably connected to the fixed support frame (11); a contraction drive assembly (23) for driving the telescopic guide vane (22) to contract toward the center so that it can be inserted into the fixed guide vane (14) is mounted on the telescopic support frame (21).

2. The automatic retractable guide vane for a tornado wind tunnel according to claim 1, characterized in that: The telescopic guide plate (22) comprises a U-shaped transversely movable guide plate (221) and two longitudinally movable guide plates (222), wherein the longitudinally movable guide plates (222) are docked at both ends of the U-shaped transversely movable guide plate (221), and the contraction drive assembly (23) comprises a first longitudinal telescopic member (231), a second longitudinal telescopic member (232), a first transverse telescopic member (233), a second transverse telescopic member (234), a first transverse slide block (235), and a second transverse slide block (236), wherein the first longitudinal telescopic member (231) is mounted on the first transverse slide block. On the block (235), the longitudinal movable guide plate (222) is connected to the telescopic end of the first longitudinal telescopic member (231) and fixed to the first transverse slider (235), the flat surfaces on both sides of the U-shaped transverse movable guide plate (221) are connected to the telescopic end of the second longitudinal telescopic member (232), one end of the second transverse slider (236) is connected to the arc portion of the U-shaped transverse movable guide plate (221), and the other end is connected to the telescopic end of the second transverse telescopic member (234), and the second longitudinal telescopic member (232) is mounted on the second transverse slider (236).

3. The automatic retractable guide vane for a tornado wind tunnel according to claim 2, characterized in that: The first longitudinal telescopic member (231), the second longitudinal telescopic member (232), the first transverse telescopic member (233), and the second transverse telescopic member (234) all adopt electric push rods.

4. The automatic retractable guide vane for a tornado wind tunnel according to claim 2, characterized in that: The first transverse slider (235) and the second transverse slider (236) are provided with strip-shaped guide holes (237), and the telescopic support frame (21) is provided with guide columns (24) that cooperate with the strip-shaped guide holes (237).

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