Device and method for replacing air vents in automobile environmental wind tunnel

Abstract

The present invention relates to an apparatus and method for replacing air vents in an automotive environmental wind tunnel. The apparatus comprises a support frame, a side shifting platform, a vertical motion mechanism, a common nozzle, a large nozzle, a small nozzle, and a rapid damper assembly. The support frame is provided with a guide rail, the side shifting platform is mounted on the guide rail and moves translationally along the guide rail. The vertical motion mechanism is mounted on the side shifting platform, the large nozzle and the small nozzle are disposed below the support frame, and the tops of the large and small nozzles cooperate with the vertical motion mechanism. The side walls of the large nozzle are provided with a first locking member, the side walls of the small nozzle are provided with a second locking member, and the side walls of the common nozzle are provided with a first locking mechanism and a second locking mechanism. The rear end of the common nozzle is provided with a rapid damper, and the rapid damper assembly is mounted on the top door frame of the rapid damper. Compared with the prior art, the present invention utilizes the side shifting platform and the vertical motion mechanism to achieve replacement of large and small nozzles, enabling rapid and automatic replacement of air vents.

Description

Technical Field

[0001] The present invention relates to the field of aerodynamic experimental equipment, and in particular to a device and method for replacing an air outlet of an automobile environmental wind tunnel. Background Art

[0002] An automotive environmental wind tunnel is essential equipment for whole-vehicle testing. Through the coordinated efforts of a return air duct system, cooling system, heating system, humidity / humidification system, sunlight simulation system, rain and snow simulation system, fan system, chassis dynamometer system, exhaust extraction system, fresh air system, control system, and data acquisition and processing system, the tunnel simulates temperature, humidity, sunlight, wind speed, road conditions, and other conditions within the vehicle. This provides the necessary operating conditions for the vehicle's air conditioning system, engine system, thermal management, and adaptability to extreme environments. The inlets in an automotive environmental wind tunnel are a crucial component, and their performance directly impacts the quality of the flow field and test reliability. To accommodate testing of different vehicle models and consider test economics, the same automotive environmental wind tunnel is generally designed with two sizes of inlets: standard and high-speed. Standard inlets are suitable for larger, lower-speed vehicles, while high-speed inlets are suitable for smaller, higher-speed vehicles. Currently, there are several main methods for switching inlets in automotive environmental wind tunnels:

[0003] 1. Such as Figure 1 As shown, this solution relies on the up and down adjustment of the flexible steel plate to change the size of the air outlet. When the electric push rod retracts and the front end surface of the flexible steel plate reaches the highest position, it is a standard air outlet. When the electric push rod extends and the front end surface of the flexible steel plate reaches the lowest position, it is a high-speed air outlet. This solution has the following shortcomings: when the flexible steel plate is adjusted to the high-speed air outlet position, its projected length in the airflow direction will be shortened, and a length compensation mechanism must be set up to ensure that the front end of the air outlet is flush with the outer frame, which increases the complexity of the structure; the airflow quality depends on the dimensional accuracy of the contraction curve. During the adjustment process of the flexible steel plate, only a few positioning rods can be added in the middle to ensure the accuracy of the contraction curve and withstand the aerodynamic force during the test. The dimensional accuracy is low and the structural stability is poor; the flexible steel plate needs to be made of steel with good flexibility and fatigue resistance, and its manufacturing cost is very high.

[0004] 2. Such as Figure 2 As shown, this solution relies on moving the profile block up and down to change the size of the tuyere. When the profile block is moved to the top, it becomes a standard tuyere, while when it is moved to the bottom, it becomes a high-speed tuyere. However, this solution has the following drawbacks: The profile block requires high processing, installation, and positioning, making it unsuitable for larger tuyere sizes.

[0005] 3. Manual replacement. The nozzle height is adjusted by manually installing the profile block in the standard tuyere. The profile block is made of lightweight material, and the surface of the profile block that contacts the airflow is pre-processed according to the calculated contraction curve. This solution can ensure the dimensional accuracy of the high-speed tuyere contraction curve, but due to the large tuyere area, it usually reaches 5-11m 2 , manual installation is very inefficient.

[0006] In summary, it is necessary to provide a stable and reliable tuyere replacement solution. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide an automobile environmental wind tunnel air outlet replacement device and method, which utilizes a lateral displacement platform and a vertical motion mechanism to realize the replacement of large and small nozzles, and can realize rapid and automatic replacement of air outlets.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] An automobile environmental wind tunnel air outlet replacement device comprises a support frame, a side shift platform, a vertical motion mechanism, a common nozzle, a large nozzle, a small nozzle and a fast air door assembly;

[0010] The support frame is provided with a guide rail, the side shift platform is mounted on the guide rail and performs translational movement along the guide rail;

[0011] The vertical motion mechanism is installed on the side shift platform, the large spout and the small spout are arranged below the support frame, and the tops of the large spout and the small spout cooperate with the vertical motion mechanism, and the vertical motion mechanism is used to drive the large spout and the small spout to move vertically;

[0012] The side wall of the large spout is provided with a first locking piece, the side wall of the small spout is provided with a second locking piece, and the side wall of the common spout is provided with a first locking mechanism and a second locking mechanism that cooperate with the first locking piece and the second locking piece;

[0013] The rear end of the common nozzle is a fast air door, and the fast air door assembly is arranged on the top door frame of the fast air door.

[0014] Furthermore, the length and width of the common nozzle are consistent with the length and width of the large nozzle; an extension section is provided at the front end of the common nozzle, and the extension section is movably connected to the front end of the common nozzle. The sum of the lengths of the common nozzle and the extension section is consistent with the length of the small nozzle, and the widths of the common nozzle and the extension section are consistent with the width of the small nozzle.

[0015] Furthermore, the rapid damper includes two dampers, and an opening and closing mechanism is provided on both sides of the rapid damper for driving the two dampers to perform translational motion to open and close the rapid damper.

[0016] Furthermore, the rapid air door assembly includes an electric push rod and a flip flanking plate. The base of the electric push rod is installed on the top door frame of the rapid air door. The extension rod of the electric push rod is connected to the flip flanking plate. The flip flanking plate is rotatably installed on the top door frame of the rapid air door. The extension rod of the electric push rod is extended and retracted to drive the flip flanking plate to rotate.

[0017] Furthermore, the first locking member and the second locking member have the same structure, and the first locking mechanism and the second locking mechanism are common locking mechanisms.

[0018] Furthermore, the first locking member includes a slot and an adsorption plate, and the common locking mechanism includes a positioning block cooperating with the slot and an electromagnetic lock cooperating with the adsorption plate.

[0019] Furthermore, the large spout and the small spout are provided with guide wheels, the common spout is provided with a guide groove cooperating with the guide wheels, the guide groove is a groove, and the guide wheels include a transverse guide wheel and a longitudinal guide wheel.

[0020] Furthermore, a bottom hook is provided at the bottom of the vertical motion mechanism, and a top hook is provided at the top of the large spout and the small spout.

[0021] Furthermore, a maintenance ladder is provided on the top of the small nozzle.

[0022] Furthermore, the side shift platform includes a moving platform and a drive motor, and the vertical motion mechanism is a winch.

[0023] A method for replacing an air outlet in an automotive environmental wind tunnel, using the above-mentioned replacement device, includes replacing a large nozzle mode to a small nozzle mode and replacing a small nozzle mode to a large nozzle mode, wherein the replacement from the large nozzle mode to the small nozzle mode is as follows:

[0024] Loosen the first locking member and the first locking mechanism between the large spout and the common spout;

[0025] Adjust the fast air door assembly to leave a gap between the end face of the nozzle section and the end face of the fast air door, and close the fast air door;

[0026] The side movement platform drives the vertical motion mechanism to move above the large spout. The top of the large spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the large spout to rise.

[0027] The side-moving platform drives the vertical motion mechanism and the large nozzle to perform translational motion until the large nozzle is staggered with the public nozzle;

[0028] The vertical motion mechanism drives the large nozzle to descend, and the vertical motion mechanism is separated from the large nozzle;

[0029] The side movement platform drives the vertical motion mechanism to move above the small spout. The top of the small spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the small spout to rise.

[0030] The side movement platform drives the vertical movement mechanism and the small nozzle to perform translational movement until the small nozzle is located above the common nozzle;

[0031] The vertical motion mechanism drives the small nozzle to descend, the vertical motion mechanism is separated from the small nozzle, and the small nozzle falls on the common nozzle;

[0032] Locking the second locking member and the second locking mechanism between the small spout and the common spout;

[0033] Adjust the fast air door assembly to make a smooth transition between the nozzle section end face and the fast air door end face, and open the fast air door;

[0034] To change from small nozzle mode to large nozzle mode:

[0035] Loosen the second locking member and the second locking mechanism between the small spout and the common spout;

[0036] Adjust the fast air door assembly to leave a gap between the end face of the nozzle section and the end face of the fast air door, and close the fast air door;

[0037] The side movement platform drives the vertical motion mechanism to move above the small spout. The top of the small spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the small spout to rise.

[0038] The side-moving platform drives the vertical motion mechanism and the small nozzle to perform translational motion until the small nozzle is staggered with the public nozzle;

[0039] The vertical motion mechanism drives the small nozzle to descend, and the vertical motion mechanism is separated from the small nozzle;

[0040] The side movement platform drives the vertical motion mechanism to move above the large spout. The top of the large spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the large spout to rise.

[0041] The side movement platform drives the vertical movement mechanism and the large nozzle to perform translational movement until the large nozzle is located above the public nozzle;

[0042] The vertical motion mechanism drives the large nozzle to descend, the vertical motion mechanism is separated from the large nozzle, and the large nozzle falls on the common nozzle;

[0043] Locking the first locking member and the first locking mechanism between the large spout and the common spout;

[0044] Adjust the rapid air door assembly to make a smooth transition between the end face of the nozzle section and the end face of the rapid air door, and open the rapid air door.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] (1) Safe and efficient: Compared with the manual replacement solution, the nozzle replacement solution of the present invention adopts an automatic form, which greatly improves the nozzle replacement efficiency, reduces the labor intensity of personnel, and avoids personnel safety accidents.

[0047] (2) Wide range of applications: The common part of the large and small nozzles is placed on the ground as a fixed end. The large and small nozzles can be replaced by simply replacing the top parts of the large and small nozzles. Therefore, it is suitable for replacing nozzles of larger sizes.

[0048] (3) Safe and reliable: The nozzle structure is mostly thin-walled and large-sized, and its rigidity is poor. Especially after long-term use, it is easy to deform the structure. The nozzle replacement solution of the present invention can be applied to slight deformation of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a structural diagram of the tuyere replacement device of prior art 1;

[0050] Figure 2 It is a structural schematic diagram of the tuyere replacement device of prior art 2;

[0051] Figure 3 This is a schematic diagram of the structure of the tuyere replacement device of this application;

[0052] Figure 4 Schematic diagram of the support frame and the fast air door;

[0053] Figure 5 This is a schematic diagram of the assembly of the large nozzle and the common nozzle;

[0054] Figure 6 This is a schematic diagram of the assembly of the small nozzle and the common nozzle;

[0055] Figure 7 This is a schematic diagram of the public nozzle and extension section;

[0056] Figure 8 Schematic diagram of the locking mechanism;

[0057] Figure 9 Schematic diagram of guide groove and guide wheel;

[0058] Figure 10 Schematic diagram of the side shift platform and vertical motion mechanism;

[0059] Figure 11 Schematic diagram of the bottom hook and the top hook;

[0060] Figure 12 Schematic diagram of the fast air door and the fast air door assembly;

[0061] Figure 13 Schematic diagram of the rapid damper assembly;

[0062] Figure 14 This is a schematic diagram of the fast damper switch;

[0063] Figure 15 Schematic diagram of switching from a large nozzle to a small nozzle;

[0064] Figure 16 Schematic diagram of switching from a small nozzle to a large nozzle;

[0065] Reference numerals: a1, electric push rod, a2, positioning rod, a3, frame, a4, flexible steel plate;

[0066] b1, bracket 1, b2, air inlet flow channel, b3, screw elevator, b4, profile block, b5, bracket 2, b6, motor 2, b7, screw elevator 2, b8, guide rail, b9, slider, b10, motor 1;

[0067] 1. Support frame, 2. Common nozzle, 3. Large nozzle, 4. Small nozzle, 5. Side shift platform, 6. Vertical motion mechanism, 7. Rapid air door assembly, 8. Guide wheel, 9. Top hook;

[0068] 2-1, extension section, 2-2, positioning block, 2-3, electromagnetic lock, 2-4, guide groove;

[0069] 6-1, bottom hook;

[0070] 7-1, fast damper, 7-2, electric cylinder telescopic rod, 7-3, flip flanging plate, 7-4, electric push rod, 7-5, electric push rod base;

[0071] 100, nozzle top end face, 200, rapid air door top door frame, 300, nozzle end face, 400, rapid air door end face. DETAILED DESCRIPTION

[0072] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operating process. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and the protection scope of the present invention is not limited to the following embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0073] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The dimensions and thicknesses of each component shown in the drawings are arbitrary and are not limited by the present invention. To enhance clarity and illustrate the coordination between components, some components in the drawings are scaled, and the distances between components are increased or decreased.

[0074] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0075] Furthermore, the terms "first," "second," "third," etc., are used solely for descriptive purposes and are not to be construed as indicating or implying relative importance. The terms "include," "comprise," "have," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0076] In the description of the embodiments of the present application, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0077] A device for replacing the air vent of an automobile environmental wind tunnel, such as Figure 3-14As shown, it includes a supporting frame 1, a side shift platform 5, a vertical movement mechanism 6, a common nozzle 2, a large nozzle 3, a small nozzle 4 and a fast air door assembly 7; a guide rail is provided on the supporting frame 1, and the side shift platform 5 is installed on the guide rail and performs translational movement along the guide rail; the vertical movement mechanism 6 is installed on the side shift platform 5, the large nozzle 3 and the small nozzle 4 are arranged below the supporting frame 1, and the top of the large nozzle 3 and the small nozzle 4 cooperates with the vertical movement mechanism 6, and the vertical movement mechanism 6 is used to drive the large nozzle 3 and the small nozzle 4 to perform vertical movement; the side wall of the large nozzle 3 is provided with a first locking piece, the side wall of the small nozzle 4 is provided with a second locking piece, and the side wall of the common nozzle 2 is provided with a first locking mechanism and a second locking mechanism that cooperate with the first locking piece and the second locking piece; the rear end of the common nozzle 2 is a fast air door, and the fast air door assembly 7 is arranged on the top door frame 200 of the fast air door.

[0078] The lateral movement platform 5 is perpendicular to the airflow direction and parallel to the ground direction, i.e., the radial direction, and the vertical movement mechanism 6 is raised and lowered perpendicular to the ground direction. The process of replacing the air outlet using this application is as follows:

[0079] (1) Changing from large nozzle 3 mode to small nozzle 4 mode is as follows:

[0080] Loosen the first locking member and the first locking mechanism between the large spout 3 and the common spout 2;

[0081] Adjust the fast damper assembly 7 to leave a gap between the end face of the nozzle section and the end face of the fast damper, and close the fast damper;

[0082] The side moving platform 5 drives the vertical motion mechanism 6 to move above the large spout 3. The top of the large spout 3 is connected to the bottom of the vertical motion mechanism 6. The vertical motion mechanism 6 drives the large spout 3 to rise.

[0083] The side movement platform 5 drives the vertical movement mechanism 6 and the large nozzle 3 to perform translational movement until the large nozzle 3 is offset from the common nozzle 2;

[0084] The vertical motion mechanism 6 drives the large nozzle 3 to descend, and the vertical motion mechanism 6 is separated from the large nozzle 3;

[0085] The side moving platform 5 drives the vertical motion mechanism 6 to move above the small spout 4. The top of the small spout 4 is connected to the bottom of the vertical motion mechanism 6. The vertical motion mechanism 6 drives the small spout 4 to rise.

[0086] The side movement platform 5 drives the vertical movement mechanism 6 and the small nozzle 4 to perform translational movement until the small nozzle 4 is located above the common nozzle 2;

[0087] The vertical motion mechanism 6 drives the small spout 4 to descend, the vertical motion mechanism 6 is separated from the small spout 4, and the small spout 4 falls on the common spout 2;

[0088] Lock the second locking member and the second locking mechanism between the small spout 4 and the common spout 2;

[0089] Adjust the fast damper assembly 7 to make a smooth transition between the end face of the nozzle section and the end face of the fast damper, and open the fast damper;

[0090] (2) Change from small nozzle 4 mode to large nozzle 3 mode:

[0091] Loosen the second locking member and the second locking mechanism between the small spout 4 and the common spout 2;

[0092] Adjust the fast damper assembly 7 to leave a gap between the nozzle section end face 300 and the fast damper end face 400, and close the fast damper;

[0093] The side moving platform 5 drives the vertical motion mechanism 6 to move above the small spout 4. The top of the small spout 4 is connected to the bottom of the vertical motion mechanism 6. The vertical motion mechanism 6 drives the small spout 4 to rise.

[0094] The side movement platform 5 drives the vertical movement mechanism 6 and the small nozzle 4 to perform translational movement until the small nozzle 4 is offset from the common nozzle 2;

[0095] The vertical motion mechanism 6 drives the small nozzle 4 to descend, and the vertical motion mechanism 6 is separated from the small nozzle 4;

[0096] The side moving platform 5 drives the vertical motion mechanism 6 to move above the large spout 3. The top of the large spout 3 is connected to the bottom of the vertical motion mechanism 6. The vertical motion mechanism 6 drives the large spout 3 to rise.

[0097] The side movement platform 5 drives the vertical movement mechanism 6 and the large nozzle 3 to perform translational movement until the large nozzle 3 is located above the common nozzle 2;

[0098] The vertical motion mechanism 6 drives the large spout 3 to descend, the vertical motion mechanism 6 is separated from the large spout 3, and the large spout 3 falls on the common spout 2;

[0099] Lock the first locking member and the first locking mechanism between the large spout 3 and the common spout 2;

[0100] Adjust the rapid damper assembly 7 to achieve a smooth transition between the nozzle section end face 300 and the rapid damper end face 400, and open the rapid damper.

[0101] This application pre-designs a common nozzle 2, a large nozzle 3 and a small nozzle 4, and utilizes the combination of the large nozzle 3 and the small nozzle 4 with the common nozzle 2 to realize the switching of the air outlet, without changing the original flow field quality (including the wind tunnel aerodynamic performance including the maximum wind speed), and to a certain extent, realizes the purpose of stable, reliable, convenient and fast replacement process of the large and small nozzles 4. Compared with directly using the small nozzle 4 to realize the small air outlet and the large nozzle 3 to realize the large air outlet, this application combines the design of the small nozzle 4 or the large nozzle 3 with the common nozzle 2. While satisfying the same formation of a small air outlet or a large nozzle structure, considering the size limit of the laboratory channel door where the wind tunnel is located, when designing the small nozzle 4 and the large nozzle 3, the structural size is reduced in the height direction, solving the problem of the size limit of the inlet and outlet channel and achieving the advantage of reducing manufacturing cost. On the other hand, considering reducing the hoisting load and further reducing the deformation factor in the operation of the hoisting steel structure, the small nozzle 4 and the large nozzle 3 are combined with the common nozzle 2 to design a structure, which brings the advantages of saving hoisting equipment cost, reducing hoisting deformation and more stable operation.

[0102] Among them, such as Figure 5 、 Figure 6 As shown, the length and width of the common spout 2 are consistent with the length and width of the large spout 3; the front end of the common spout 2 is provided with an extension section 2-1, which is movably connected to the front end of the common spout 2. The sum of the lengths of the common spout 2 and the extension section 2-1 is consistent with the length of the small spout 4, and the widths of the common spout 2 and the extension section 2-1 are consistent with the width of the small spout 4. In this embodiment, Figure 7 As shown, a reversible extension section 2-1 is connected to the front end of the side wall of the common spout 2 by a hinge. When the small spout 4 is used, the extension section 2-1 is flipped to be flush with the side wall of the common spout 2, so that the small spout 4 has the same length as the common spout 2 and the extension section 2-1. When the large spout 3 is used, the extension section 2-1 is flipped to be perpendicular to or in contact with the side wall of the common spout 2, so that the large spout 3 has the same length as the common spout 2.

[0103] To reduce component redundancy, in this embodiment, the first locking member and the second locking member have the same structure, and the first locking mechanism and the second locking mechanism are common locking mechanisms, that is, the large nozzle 3 and the small nozzle 4 share a set of locking mechanisms.

[0104] Among them, such as Figure 8 As shown, the first locking member and the second locking member include a slot and an adsorption plate, and the common locking mechanism includes a V-shaped positioning block 2-2 that cooperates with the slot and an electromagnetic lock 2-3 that cooperates with the adsorption plate. The number of V-shaped positioning blocks 2-2 and electromagnetic locks 2-3 can be set in multiples, and they can be arranged at the top of the side wall of the common nozzle 2 along the length direction of the common nozzle 2.

[0105] like Figure 8As shown, the V-shaped positioning block 2-2 structure in the common locking mechanism, which cooperates with the slot of the large nozzle 3 or the small nozzle 4, can correct the lateral position of the large or small nozzle during the landing process by cooperating with the V-shaped slot surface, achieving precise and repeatable positioning, ensuring that the position remains unchanged after each nozzle replacement and landing. In addition, the V-shaped positioning block 2-2 structure cooperates with the slot of the large nozzle 3 or the small nozzle 4 to limit the displacement of the large nozzle 3 or the small nozzle 4 along the airflow direction after the large nozzle 3 or the small nozzle 4 is replaced, providing a safety protection function to limit the movement of the nozzle.

[0106] like Figure 8 、 Figure 9 As shown, guide wheels 8 are provided on the side walls of the large nozzle 3 and the small nozzle 4, and guide grooves 2-4 on the common nozzle 2 cooperate with the guide wheels 8. The guide grooves 2-4 are provided on columns perpendicular to the side walls of the common nozzle 2, so that the large nozzle 3 and the small nozzle 4 can be stably lifted and lowered through the guide wheels 8 and the guide grooves 2-4 during the lifting process. The guide grooves 2-4 are grooves, and the guide wheels 8 include transverse guide wheels 8 and longitudinal guide wheels 8. The guide wheels 8 in two directions are designed, which has the advantage that after the large nozzle 3 or the small nozzle 4 is moved to the side, the guide wheels in the two directions play a transverse and longitudinal guiding and pressing role during the lifting process, thereby ensuring accurate positioning during the lifting process.

[0107] In order to reduce the cost, the support frame 1 can be improved on the original steel structure support frame 1 of the wind tunnel test device. Figure 10 As shown, the side shift platform 5 comprises a mobile platform, a drive motor, a gear train, and other components. The rotation of the drive motor drives the mobile platform's horizontal movement along the guide rails. The vertical motion mechanism 6, a high-capacity winch, can raise and lower the large and small spouts 3 and 4. To precisely control both horizontal and vertical movement, a controller precisely controls the side shift platform 5 and the vertical motion mechanism 6. Furthermore, linear grating sensors and proximity switches can be installed on the support frame 1 for position feedback, enabling precise position adjustment.

[0108] like Figure 11 As shown, the bottom of the vertical motion mechanism 6 is provided with a bottom hook 6-1, and the tops of the large spout 3 and the small spout 4 are provided with top hooks 9. When in use, the bottom hook 6-1 of the vertical motion mechanism 6 is first moved down to a position slightly lower than the top hooks 9 of the large spout 3 and the small spout 4, and then the vertical motion mechanism 6 is driven by the side shifting platform 5 to move horizontally so that the bottom hook 6-1 is located directly below the top hook 9. The vertical motion mechanism 6 is then lifted upward, and the bottom hook 6-1 is hooked tightly with the top hook 9, thereby achieving the connection between the vertical motion mechanism 6 and the large spout 3 and the small spout 4. Similarly, when disengaging, the vertical motion mechanism 6 falls so that the bottom hook 6-1 is located directly below the top hook 9, and then the vertical motion mechanism 6 is driven by the side shifting platform 5 to move horizontally so that the bottom hook 6-1 is disengaged from the top hook 9.

[0109] like Figure 12-14 As shown, the rapid damper includes two dampers, with opening and closing mechanisms provided on either side of the rapid damper for driving the two dampers to perform translational motion to open and close the rapid damper. In this embodiment, the opening and closing mechanism is an electric cylinder telescopic rod 7-2. Movement of the two electric cylinder telescopic rods 7-2 drives the two dampers toward each other, bringing them together, thereby closing the rapid damper. The air inlet and the nozzle are separated by the rapid damper. Movement of the two electric cylinder telescopic rods 7-2 drives the two dampers toward each other, moving them away from each other, thereby opening the rapid damper and connecting the air inlet and the nozzle. Slide rails can be provided on the laboratory floor or support frame 1 to ensure smoother movement of the dampers.

[0110] However, since the large nozzle 3 and the small nozzle 4 need to be replaced, a fast damper assembly 7 is required to achieve a smooth transition between the fast damper end face 400 and the nozzle end face 300. The fast damper assembly 7 includes an electric push rod 7-4 and a flip flanging plate 7-3. The base 7-5 of the electric push rod 7-4 is installed on the top door frame 200 of the fast damper. The electric push rod 7-4 is connected to the flip flanging plate 7-3. The flip flanging plate 7-3 is rotatably installed on the top door frame 200 of the fast damper. The electric push rod 7-4 extends and retracts to drive the flip flanging plate 7-3 to rotate. In this embodiment, the electric push rod 7-4 is retracted to tilt the flip plate 7-3 upward by 45 degrees, separating the nozzle end face from the contact surface of the rapid damper. The rapid damper is then closed, with the rapid damper end face away from the nozzle end face, leaving a gap between the rear end of the nozzle and the rapid damper, thereby facilitating subsequent nozzle replacement. After the nozzle is replaced, the rapid damper is positioned between the nozzle end face and the gap. The electric push rod 7-4 at the top of the rapid damper is controlled to extend, causing the flip plate 7-3 to tilt downward to a specified position, contacting the nozzle top end face 100, thereby achieving a smooth transition to the nozzle inner surface. The two dampers 7-1 are then controlled to move toward each other, opening the rapid damper until the damper end face 400 is flush with the nozzle end face 300.

[0111] Without changing the original flow field quality and the aerodynamic performance of the wind tunnel, including the maximum wind speed, this application redesigns the tuyere device to achieve, to a certain extent, the goal of stable, reliable, convenient, and rapid replacement of the large and small nozzles 4. Furthermore, while meeting the aforementioned basic functions, additional functions can be added, such as providing an access ladder on the small nozzle 4, a concealed tool box, and so on.

[0112] A method for replacing the air vents of an automobile environmental wind tunnel, using the above-mentioned replacement device, includes replacing the large nozzle 3 mode to the small nozzle 4 mode and replacing the small nozzle 4 mode to the large nozzle 3 mode. In this embodiment, as Figure 15 As shown, the specific steps for changing from large nozzle 3 mode to small nozzle 4 mode are:

[0113] (1) Preparation before moving the large nozzle 3.

[0114] The large spout 3 and the side wall of the bottom common spout 2 are fixed to the common spout 2 by a first locking member and a first locking mechanism. Therefore, before the large spout 3 is switched to the small spout 4, the locking mechanism needs to be opened.

[0115] By retracting the electric push rod 7-4, the flip plate 7-3 is tilted upward by 45 degrees, separating the nozzle end face from the contact surface of the rapid damper. By controlling the electric cylinder telescopic rod 7-2, the two rapid dampers on both sides move toward each other until the rapid dampers are closed and the end faces of the rapid dampers are away from the nozzle end face, leaving a gap between the nozzle and the rapid dampers.

[0116] (2) The lateral movement platform 5 drives the vertical movement mechanism 6 to move above the large nozzle 3.

[0117] The side shift platform 5 consists of a mobile platform, a drive motor, and rolling pulleys. Its design allows the platform 5 to drive the vertical motion mechanism 6 and the nozzle radially on the steel support frame 1. The motor and driver control ensure smooth and reliable movement of the side shift platform 5, while position feedback through proximity switches enables precise position adjustment.

[0118] Before replacing the nozzle, the side shift platform 5 is positioned on the hoisting steel structure, 4000 mm horizontally from the public nozzle 2. Before replacing the large nozzle 3, the side shift platform 5 needs to be moved directly above the large nozzle 3 (above the public nozzle 2). The motor of the side shift platform 5 is driven by a variable frequency drive, moving the side shift platform 5 4000 mm to directly above the nozzle.

[0119] (3) The vertical motion mechanism 6 drives the hook to lift the nozzle in the direction perpendicular to the ground

[0120] The vertical motion mechanism 6 is a winch. The end of the winch wire rope passes over a movable pulley and is then wound around the winch drum. A hook lock at the bottom of the movable pulley engages with a lifting ring on the frame of the vertical motion mechanism 6, securing them together. Therefore, extending the winch rope lowers the vertical motion mechanism 6, while retracting the wire rope raises it.

[0121] When the lateral platform 5 drives the vertical motion mechanism 6 to move to the position directly above the large spout 3, the bottom hook 6-1 of the vertical motion mechanism 6 is located below the top hook 9 of the large spout 3. By controlling the winch to retract the wire rope, the vertical motion mechanism 6 is vertically lifted 100 mm. At this time, the two hooks touch each other. The winch is further controlled to retract the wire rope to drive the vertical motion mechanism 6 vertically lifted 100 mm. At this time, the bottom of the large spout 3 is lifted 100 mm away from the top surface of the common spout 2.

[0122] (4) The side shift platform 5 drives the large nozzle 3 to move to the designated position

[0123] 1) The side shift platform 5 moves radially 4000 mm to hoist the large nozzle 3 to the designated position, 1506 mm above the ground;

[0124] 2) By controlling the winch wire rope to extend 1506mm, the vertical motion mechanism 6 is driven to move vertically downward, and the large spout 3 is placed on the ground at the specified position. Then the wire rope continues to extend downward by 100mm, and the bottom hook 6-1 of the vertical motion mechanism 6 is separated from the top hook 9 of the large spout 3.

[0125] (5) The side shift platform 5 drives the vertical motion mechanism 6 to move radially to the top of the small nozzle 4

[0126] After the large nozzle 3 falls into the designated position, the winch does not move, the wire rope length remains unchanged, and the vertical motion mechanism 6 is in a lower position. At this time, the motor of the side shift platform 5 is controlled to rotate to drive the side shift platform 5 to drag the vertical motion mechanism 6 to move radially 8000mm to above the small nozzle 4.

[0127] (6) Small nozzle 4 lifting

[0128] By controlling the operation of the winch to drive the wire rope to retract, after the vertical motion mechanism 6 is lifted 100mm, the bottom hook 6-1 of the vertical motion mechanism 6 is fitted with the top hook 9 of the small nozzle 4, and then continues to move vertically for 1506mm. At this time, the bottom end face of the small nozzle 4 is 1506mm away from the ground and 100mm away from the upper end face of the common nozzle 2.

[0129] (7) The side shift platform 5 drives the small nozzle 4 to the top of the common nozzle 2

[0130] 1) The side shift platform 5 drives the small nozzle 4 to move 4000mm laterally;

[0131] 2) The winch drives the wire rope to extend 100 mm, and the small nozzle 4 falls on the public nozzle 2. The guide wheel 8 guides the falling process;

[0132] 3) The winch drives the wire rope to continue extending by 100 mm, and the bottom hook 6-1 of the vertical motion mechanism 6 is separated from the top hook 9 of the small nozzle 4;

[0133] (8) Install the extension section 2-1 of the boundary layer small nozzle 4 and fix the small nozzle 4 to the common nozzle 2 and the boundary layer.

[0134] After replacing the small nozzle 4 with the large nozzle 3, the nozzle extension 2-1 is installed on the boundary layer suction structure. The lower nozzle is positioned and secured to the common nozzle 2 using a second locking member and a second locking mechanism. Similarly, a similar locking member and locking mechanism can be used to position and secure the extension 2-1 to the small nozzle 4, preventing relative movement of the small nozzle 4 and securing it in two directions.

[0135] (6) According to the use requirements, move the side shift platform 5 to the designated position

[0136] After the large nozzle 3 replaces the small nozzle 4, the lateral movement platform 5 drives the vertical motion mechanism 6 to be located above the small nozzle 4. At this time, the bottom hook 6-1 of the vertical motion mechanism 6 is below the top hook 9 of the small nozzle 4. According to usage requirements, the lateral movement platform 5 is moved 4000mm to the designated position of the hoisting steel structure.

[0137] (7) The turning plate 7-3 at the fast air door is turned over, and the fast air door is opened.

[0138] After the small nozzle 4 is replaced, there is still a gap between the rapid dampers and the nozzle end faces. The electric push rod 7-4 at the top of the rapid damper is controlled to extend, causing the flip plate 7-3 to flip downward to the specified position, making the nozzle inner surface transition smoothly. The electric cylinder telescopic rod 7-2 is controlled to move, driving the two rapid dampers to move toward each other, opening the dampers until the damper ends are flush with the nozzle end faces.

[0139] The change from small nozzle 4 mode to large nozzle 3 mode is similar to the above solution, such as Figure 16 As shown, the replacement steps are as follows:

[0140] (1) Preparation work before replacing the small nozzle 4.

[0141] 1) The latch positioning device between the boundary layer nozzle extension section 2-1 and the small nozzle 4 is unlocked by manual operation, power signal control, etc., and the extension section 2-1 is moved away. The locking piece and locking mechanism between the small nozzle 4 and the common nozzle 2 are unlocked by power signal control, etc.

[0142] 2) Control the electric push rod 7-4 above the fast air door to retract, pull the folding plate to flip 45 degrees, and leave a gap between the top end face of the nozzle section and the top of the fast air door.

[0143] 3) Control the movement of the telescopic rod 7-2 of the electric cylinder, and the two dampers move toward each other until the damper end faces are pressed tightly. At this time, a gap is left between the side of the nozzle section and the fast damper.

[0144] 4) The lateral movement platform 5 drives the vertical movement mechanism 6 to move above the small spout 4. At this time, the bottom hook 6-1 of the vertical movement mechanism 6 is below the top hook 9 of the small spout 4.

[0145] (2) The small nozzle 4 is moved to the designated position.

[0146] 1) By controlling the rotation of the winch, the wire rope is retracted to drive the vertical motion mechanism 6 to rise 100 mm. At this time, the bottom hook 6-1 of the vertical motion mechanism 6 is closely matched with the top hook 9 used for hoisting above the small nozzle 4.

[0147] 2) The vertical motion mechanism 6 continues to rise by 100 mm, at which time the small nozzle 4 rises by 100 mm, and the bottom end surface of the small nozzle 4 is now 1506 mm from the ground.

[0148] 3) By controlling the rotation of the motor of the lateral movement platform 5, the lateral movement platform 5 and the vertical movement mechanism 6 are driven to move radially 4000 mm.

[0149] 4) The vertical motion mechanism 6 descends 1506 mm, at which time the small spout 4 falls to the ground, and the vertical motion mechanism 6 continues to descend, and the hook 6 - 1 at the bottom of the vertical motion mechanism 6 is separated from the hook 9 at the top of the small spout 4 .

[0150] (3) The large nozzle 3 moves to the designated position.

[0151] 1) The lateral movement platform 5 drives the vertical movement mechanism 6 to move radially 8000 mm to the top of the large nozzle 3.

[0152] 2) The vertical motion mechanism 6 is lifted 100mm. At this time, the bottom hook 6-1 of the vertical motion mechanism 6 is tightly matched with the top hook 9 above the large nozzle 3. After continuing to lift 1506mm, the large nozzle 3 is 1506mm away from the ground and 100mm away from the two ends of the public nozzle.

[0153] 3) The lateral movement platform 5 drives the vertical movement mechanism 6 and the large nozzle 3 to move radially 4000 mm to the top of the public nozzle 2.

[0154] 4) Vertical motion mechanism 6 descends 100 mm, and the bottom surface of large spout 3 lands on shared spout 2. During this descent, guide wheels 8 on the end surface of large spout 3 move within guide grooves 2-4 of shared spout 2, providing guidance. Vertical motion mechanism 6 descends another 100 mm, and hook 6-1 at the bottom of vertical motion mechanism 6 separates from hook 9 at the top of large spout 3.

[0155] 5) The side shift platform 5 is radially displaced 4000 mm to the specified position.

[0156] (4) The large nozzle 3 is positioned and the rapid damper is opened.

[0157] 1) Control the first locking member and the first locking mechanism to fix the large spout 3 and the common spout 2.

[0158] 2) After the large nozzle 3 is replaced, there is still a gap between the fast air door and the nozzle end surface. The electric push rod 7-4 on the top of the fast air door is controlled to extend, so that the flip plate 7-3 is flipped down to the specified position, making the inner surface of the nozzle smooth.

[0159] 3) Control the movement of the telescopic rod 7-2 of the electric cylinder to drive the two fast dampers 7-1 to move toward each other, and open the dampers 7-1 until the damper end face 400 is flush with the nozzle end face 300.

[0160] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A device for replacing the air vent of an automobile environmental wind tunnel, characterized in that: It includes a supporting frame, a side-moving platform, a vertical motion mechanism, a common nozzle, a large nozzle, a small nozzle and a fast air door assembly; The support frame is provided with a guide rail, the side shift platform is mounted on the guide rail and performs translational movement along the guide rail; The vertical motion mechanism is installed on the side shift platform, the large spout and the small spout are arranged below the support frame, and the tops of the large spout and the small spout cooperate with the vertical motion mechanism, and the vertical motion mechanism is used to drive the large spout and the small spout to move vertically; The side wall of the large spout is provided with a first locking piece, the side wall of the small spout is provided with a second locking piece, and the side wall of the common spout is provided with a first locking mechanism and a second locking mechanism that cooperate with the first locking piece and the second locking piece; The rear end of the common nozzle is a fast damper, and the fast damper assembly is arranged on the top door frame of the fast damper; The length and width of the common spout are consistent with those of the large spout; an extension section is provided at the front end of the common spout, the extension section is movably connected to the front end of the common spout, the sum of the lengths of the common spout and the extension section is consistent with the length of the small spout, and the widths of the common spout and the extension section are consistent with the width of the small spout; The fast air door assembly includes an electric push rod and a flip flanking plate, the base of the electric push rod is installed on the top door frame of the fast air door, the extension rod of the electric push rod is connected to the flip flanking plate, the flip flanking plate is rotatably installed on the top door frame of the fast air door, and the extension rod of the electric push rod is extended to drive the flip flanking plate to rotate; The large spout and the small spout are provided with guide wheels, the common spout is provided with a guide groove matched with the guide wheels, the guide groove is a groove, and the guide wheels include a transverse guide wheel and a longitudinal guide wheel.

2. The automobile environmental wind tunnel vent replacement device according to claim 1, characterized in that: The fast air door comprises two air doors, and an opening and closing mechanism is provided on both sides of the fast air door for driving the two air doors to perform translational motion to open and close the fast air door.

3. The device for replacing the air vent of an automobile environmental wind tunnel according to claim 1, characterized in that: The first locking member and the second locking member have the same structure, and the first locking mechanism and the second locking mechanism are common locking mechanisms.

4. The automobile environmental wind tunnel vent replacement device according to claim 3, characterized in that: The first locking member includes a slot and an adsorption plate, and the common locking mechanism includes a positioning block matched with the slot and an electromagnetic lock matched with the adsorption plate.

5. The automobile environmental wind tunnel vent replacement device according to claim 1, characterized in that: A bottom hook is provided at the bottom of the vertical motion mechanism, and a top hook is provided at the top of the large spout and the small spout.

6. The automobile environmental wind tunnel vent replacement device according to claim 1, characterized in that: An inspection ladder is also provided on the top of the small spout.

7. A method for replacing the air vent of an automobile environmental wind tunnel, characterized in that: Using the replacement device according to any one of claims 1 to 6, including changing from a large nozzle mode to a small nozzle mode and from a small nozzle mode to a large nozzle mode, wherein changing from a large nozzle mode to a small nozzle mode is: Loosen the first locking member and the first locking mechanism between the large spout and the common spout; Adjust the fast air door assembly to leave a gap between the end face of the nozzle section and the end face of the fast air door, and close the fast air door; The side movement platform drives the vertical motion mechanism to move above the large spout. The top of the large spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the large spout to rise. The side-moving platform drives the vertical motion mechanism and the large nozzle to perform translational motion until the large nozzle is staggered with the public nozzle; The vertical motion mechanism drives the large nozzle to descend, and the vertical motion mechanism is separated from the large nozzle; The side movement platform drives the vertical motion mechanism to move above the small spout. The top of the small spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the small spout to rise. The side movement platform drives the vertical movement mechanism and the small nozzle to perform translational movement until the small nozzle is located above the common nozzle; The vertical motion mechanism drives the small nozzle to descend, the vertical motion mechanism is separated from the small nozzle, and the small nozzle falls on the common nozzle; Locking the second locking member and the second locking mechanism between the small spout and the common spout; Adjust the fast air door assembly to make a smooth transition between the nozzle section end face and the fast air door end face, and open the fast air door; To change from small nozzle mode to large nozzle mode: Loosen the second locking member and the second locking mechanism between the small spout and the common spout; Adjust the fast air door assembly to leave a gap between the end face of the nozzle section and the end face of the fast air door, and close the fast air door; The side movement platform drives the vertical motion mechanism to move above the small spout. The top of the small spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the small spout to rise. The side-moving platform drives the vertical motion mechanism and the small nozzle to perform translational motion until the small nozzle is staggered with the public nozzle; The vertical motion mechanism drives the small nozzle to descend, and the vertical motion mechanism is separated from the small nozzle; The side movement platform drives the vertical motion mechanism to move above the large spout. The top of the large spout is connected to the bottom of the vertical motion mechanism, and the vertical motion mechanism drives the large spout to rise. The side movement platform drives the vertical movement mechanism and the large nozzle to perform translational movement until the large nozzle is located above the public nozzle; The vertical motion mechanism drives the large nozzle to descend, the vertical motion mechanism is separated from the large nozzle, and the large nozzle falls on the common nozzle; Locking the first locking member and the first locking mechanism between the large spout and the common spout; Adjust the rapid air door assembly to make a smooth transition between the end face of the nozzle section and the end face of the rapid air door, and open the rapid air door.

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