Scaling car model moving device and scaling wind tunnel test system

Abstract

The invention provides a scaled car model moving device and a scaled wind tunnel test system. The scaled car model moving device comprises two parallel guide rails; the tray is slidably connected with the two guide rails; each supporting assembly comprises a sliding rail, and one end of the sliding rail is rotatably connected with the tray; the swing arm is slidably connected with the sliding rail; the supporting rod is fixedly connected with the side, back on to the sliding rail, of the swing arm. By the adoption of the device, by means of linear movement of the swing arm along the sliding rail and rotation of the sliding rail relative to the tray, the supporting rod is matched with the supporting positions of the scaling car models of different sizes and specifications, the scaling car models are supported, and meanwhile the scaling car models on the tray are driven to move synchronously by means of sliding of the tray along the guide rail; compared with carrying the model by means of other external equipment, the tray drives the model to slide along the guide rail, so that the convenience of the moving process is improved, and rapid movement of the scaled automobile model can be realized by means of sliding of the tray along the guide rail.

Description

Technical Field

[0001] The present invention relates to the technical field of scaled wind tunnel test technology, and particularly relates to a scaled vehicle model moving device and a scaled wind tunnel test system. Background Art

[0002] An automotive wind tunnel is an indispensable technical means in the development process of the aerodynamic performance of a whole vehicle. Compared with a full-scale wind tunnel, a scaled model wind tunnel has advantages such as high test efficiency, low cost, and convenient operation, and is particularly important in the early development of the aerodynamic performance of a whole vehicle. Most foreign automotive OEMs have their own scaled model wind tunnels, and in recent years, it has also been increasingly valued in China.

[0003] As the carrier of the scaled model wind tunnel test - the scaled vehicle model, this model only simulates the aerodynamic shape of the whole vehicle, and the wheels and suspension of the model itself cannot bear weight. Therefore, the model cannot be pushed or moved on the ground by itself and needs to be carried by external equipment, which brings difficulties to the rapid handling of the model. Before the wind tunnel test, the model needs to be carried to the center position of the wind tunnel test bench and installed. After the test, the model needs to be carried out of the test bench. During the whole test process, the handling of the model is very inconvenient. Summary of the Invention

[0004] In view of this, the present invention provides a scaled vehicle model moving device and a scaled wind tunnel test system. By means of the movable connection between the swing arm and the slide rail, and the rotational connection between the slide rail and the tray, the support position matching between the support component and the scaled vehicle model is realized. At the same time, the guide rail is extended to the wind tunnel test bench, and by means of the movement of the tray along the guide rail, the scaled vehicle model on the tray is driven to move.

[0005] The scaled vehicle model moving device provided by the present invention includes:

[0006] Two mutually parallel guide rails;

[0007] A tray, which is slidably connected to the two guide rails;

[0008] Multiple groups of support components, each of the support components includes:

[0009] A slide rail, one end of which is rotatably connected to the tray; [[ID=;33]]

[0010] A swing arm, which is slidably connected to the slide rail;

[0011] A support rod, which is fixedly connected to the side of the swing arm facing away from the slide rail.

[0012] Optionally, each of the support components further includes: a first sliding bearing, which sleeves the slide rail and can slide along the slide rail, and the swing arm is fixedly connected to the first sliding bearing.

[0013] Optionally, each of the support components further includes: a first limiting post, the first limiting posts are respectively fixed at opposite ends of the slide rail, and the first sliding bearing is located between the first limiting posts at both ends of the slide rail.

[0014] Optionally, a plurality of the first sliding bearings are provided.

[0015] Optionally, each of the support components further includes: a rotating shaft, the rotating shaft penetrates through the tray and one end of the slide rail, the rotating shaft is fixedly connected to the tray and is rotatably connected to the slide rail.

[0016] Optionally, the scaled-down car model moving device further includes: a plurality of connecting plates, opposite ends of each connecting plate are respectively connected to two of the guide rails.

[0017] Optionally, the scaled-down car model moving device further includes: a second sliding bearing, the second sliding bearing sleeves the guide rail and can slide along the guide rail, and the tray is fixedly connected to the second sliding bearing.

[0018] Optionally, the scaled-down car model moving device further includes: a second limiting post, the second limiting posts are respectively fixed at opposite ends of the guide rail, and the second sliding bearing is located between the second limiting posts at both ends of the guide rail.

[0019] Optionally, the end of the support rod away from the swing arm is provided as a cone.

[0020] The present invention further provides a scaled-down wind tunnel test system, including a wind tunnel test bench, and further including the scaled-down car model moving device according to any one of the above, and the guide rail of the scaled-down car model moving device extends to the wind tunnel test bench.

[0021] The above technical solutions provided by the present invention, compared with the prior art, at least have the following beneficial effects:

[0022] By using the scaled-down car model moving device and the scaled-down wind tunnel test system of the present invention, with the help of the linear movement of the swing arm along the slide rail and the rotation of the slide rail relative to the tray, the support position matching between the support rod and the scaled-down car models of different size specifications is realized, and the scaled-down car models are supported. At the same time, the guide rail is extended to the wind tunnel test bench, and with the help of the sliding of the tray along the guide rail, the scaled-down car model on the tray is driven to move synchronously. Compared with transporting the scaled-down car model by using other external devices, the sliding of the tray driving the scaled-down car model along the guide rail greatly improves the convenience of the moving process, and with the help of the sliding of the tray along the guide rail, the rapid movement of the scaled-down car model can be realized. Description of the Drawings

[0023] Figure 1Stereoscopic structure diagram of the scaled - down car model moving device according to an embodiment of the present invention;

[0024] Figure 2 is Figure 1 the side view of the shown scaled - down car model moving device.

[0025] Reference numerals:

[0026] 1: Guide rail; 2: Tray; 3: Support assembly; 31: Slide rail; 32: Swing arm; 33: Support rod; 34: First sliding bearing; 35: Rotating shaft; 4: Connecting plate; 5: Second sliding bearing. Detailed implementation manners

[0027] The embodiments of the present invention will be further described below with reference to the drawings. In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0028] Figure 1 Stereoscopic structure diagram of the scaled - down car model moving device according to an embodiment of the present invention; Figure 2 is Figure 1 the side view of the shown scaled - down car model moving device. As Figure 1 and Figure 2 shown, the scaled - down car model moving device includes two mutually parallel guide rails 1, a tray 2 and multiple groups of support assemblies 3. The tray 2 is slidably connected to the two guide rails 1; each support assembly 3 includes a slide rail 31, a swing arm 32 and a support rod 33. One end of the slide rail 31 is rotatably connected to the tray 2; the swing arm 32 is slidably connected to the slide rail 31; the support rod 33 is fixedly connected to the side of the swing arm 32 facing away from the slide rail 31.

[0029] During use, one end of the guide rail 1 is extended to the recovery position of the scaled car model, and the other end is extended to the wind tunnel test bench. According to the size specification requirements of different scaled car models for the scaled wind tunnel test, the slide rails 31 in the different support assemblies 3 are rotated relative to the tray 2 by a certain angle, thereby driving the swing arm 32 connected to the slide rail 31 to rotate synchronously by a certain angle, and the swing arm 32 is made to slide a certain distance along the slide rail 31, and finally driving the support rods 33 in each support assembly 3 to rotate relative to the tray 2 by a certain angle, and produce a certain linear displacement relative to the slide rail 31, so that the position of each support rod 33 is matched one by one with the positioning holes pre-opened on the chassis of the scaled car model. The positioning holes on the scaled car model are aligned with each support rod 33, and each support rod 33 is correspondingly inserted into each positioning hole, and the scaled car model is lifted up by each support rod 33 to ensure that the scaled car model does not contact the ground (the scaled car model suspension system itself is not load-bearing). After the scaled car model is installed on each support assembly 3, the tray 2 is pushed, causing it to slide along the guide rails 1, thereby driving the support assembly 3 connected to the tray 2 and the scaled car model connected to the support assembly 3 to move synchronously until they are moved to the wind tunnel test bench. Using the existing equipment at the wind tunnel test bench, the scaled car model is hoisted and installed. The tray 2 is then pushed in the opposite direction, causing it to slide along the guide rails 1 in the opposite direction, thereby driving each support assembly 3 away from the wind tunnel test bench. After the wind tunnel test is completed, the tray 2 is pushed, causing it and each support assembly 3 to be moved back to the wind tunnel test bench. Using the existing equipment at the wind tunnel test bench, the scaled car model is lifted and realigned with each support rod 33. The scaled car model is then reconnected to each support rod 33. The tray 2 is then pushed again to slide along the guide rails 1 away from the wind tunnel test bench, thereby driving the scaled car model away from the wind tunnel test bench and ultimately moving it to the scaled car model recovery location.

[0030] By adopting the scaled car model moving device of the present invention, the swing arm 32 moves linearly along the slide rail 31, and the slide rail 31 rotates relative to the tray 2, so as to match the support position of the support rod 33 with the scaled car models of different sizes and specifications, thereby providing support for the scaled car models. At the same time, the guide rail 1 is extended to the wind tunnel test bench, and the scaled car model on the tray 2 is driven to move synchronously by the sliding of the tray 2 along the guide rail 1. Compared with transporting the scaled car model with the help of other external equipment, the tray 2 drives the scaled car model to slide along the guide rail 1, which greatly improves the convenience of the moving process, and the sliding of the tray 2 along the guide rail 1 can realize the rapid movement of the scaled car model.

[0031] like Figure 1 and Figure 2As shown, in this embodiment, two guide rails 1 adopt standard SBR30S cylindrical guide rails, which are arranged in parallel with each other and have a length of about six meters. Each guide rail 1 is composed of three identical profiles spliced in sequence. The pallet 2 is an overall cuboid plate body, which is arranged on the guide rail 1 and can slide along the extension direction of the guide rail 1. Four groups of support components 3 are provided in total. Figure 1 In each group of support components 3, one end of the slide rail 31 facing the center of the pallet 2 is rotatably connected to the pallet 2. The slide rails 31 in the four groups of support components 3 do not interfere with each other during the rotation process. The swing arm 32 is arranged as a cuboid plate body and can move along the extension direction of the slide rail 31. The support rod 33 is fixed to one end of the swing arm 32 away from the center of the pallet 2. According to the actual application situation, the extension length of the guide rail 1 and the shape and size of the pallet 2 can both be adjusted, and the number of support components 3 provided can also be adjusted according to the support requirements of the scaled-down car model. The slide rail 31 can be rotatably connected to the pallet 2 in any way, the swing arm 32 can be slidably connected to the slide rail 31 in any way, and the pallet 2 can be slidably connected to the guide rail 1 in any way. As long as the rotation angle of the slide rail 31 relative to the pallet 2 and the linear displacement of the swing arm 32 relative to the slide rail 31 are adjusted so that the support component 3 can match and support scaled-down car models of different specifications, and through the sliding of the pallet 2 relative to the guide rail 1, the scaled-down car model can be quickly moved between the wind tunnel test bench and the scaled-down car model recovery position.

[0032] Optionally, each support component 3 further includes a first sliding bearing 34. The first sliding bearing 34 is sleeved on the slide rail 31 and can slide along the slide rail 31. The swing arm 32 is fixedly connected to the first sliding bearing 34. The sliding bearing has a high load-bearing capacity, a long service life, and stable and reliable operation. With the above settings, the sliding connection between the swing arm 32 and the slide rail 31 is realized by means of the first sliding bearing 34, which is beneficial to the long-term stable operation of the device.

[0033] As Figure 1 and Figure 2 shown, in this embodiment, a first sliding bearing 34 is sleeved on each slide rail 31. The upper surface of the first sliding bearing 34 is fixedly connected to the swing arm 32. When the position of the support rod 33 needs to be linearly moved, the first sliding bearing 34 is pushed to make the first sliding bearing 34 slide along the slide rail 31, thereby driving the swing arm 32 and the support rod 33 directly or indirectly connected to the first sliding bearing 34 to move synchronously. The sliding bearing is a mature existing technology, and its specific structure and working principle will not be elaborated here. The first sliding bearing 34 in this embodiment adopts an SBR30UU standard sliding bearing.

[0034] Optionally, each support component 3 further includes a first limit post (not shown). First limit posts are respectively fixed at opposite ends of the slide rail 31, and the first sliding bearing 34 is located between the first limit posts at both ends of the slide rail 31. With this arrangement, the movement range of the first sliding bearing 34 is limited by the first limit posts, preventing the first sliding bearing 34 from detaching from the slide rail 31 when it moves to both ends of the slide rail 31.

[0035] According to the actual application situation, the first limit posts can be installed at any position close to both ends of the slide rail 31, and their structural forms can be adjusted arbitrarily, as long as the first limit posts can block the first sliding bearing 34 from continuing to move along the slide rail 31 when the first sliding bearing 34 moves to this position.

[0036] Optionally, multiple first sliding bearings 34 are provided. With multiple first sliding bearings 34, a more stable sliding connection between the swing arm 32 and the slide rail 31 can be achieved.

[0037] As Figure 1 and Figure 2 shown, in this embodiment, two first sliding bearings 34 are sleeved on each slide rail 31, and a certain distance is maintained between the two first sliding bearings 34. The upper surface of each first sliding bearing 34 is fixedly connected to the swing arm 32. According to the actual application situation, the specific number of the first sliding bearings 34 can be adjusted.

[0038] Optionally, each support component 3 further includes a rotating shaft 35. The rotating shaft 35 penetrates through the tray 2 and one end of the slide rail 31. The rotating shaft 35 is fixedly connected to the tray 2 and is rotatably connected to the slide rail 31. With this arrangement, the rotational connection method between the slide rail 31 and the tray 2 is simplified, facilitating assembly and operation.

[0039] As Figure 2 shown, in this embodiment, the rotating shaft 35 penetrates through the tray 2 and the slide rail 31 at one end of the slide rail 31 facing the center of the tray 2, and the slide rail 31 is rotatable relative to the rotating shaft 35. When it is necessary to rotate the angle of the support rod 33 to adapt to different models of scaled-down car models, the slide rail 31 is pushed to rotate the slide rail 31 relative to the rotating shaft 35, thereby driving the first sliding bearing 34, the swing arm 32, and the support rod 33 directly or indirectly connected to the slide rail 31 to rotate synchronously.

[0040] Optionally, the scaled-down car model moving device further includes multiple connecting plates 4. Opposite ends of each connecting plate 4 are respectively connected to two guide rails 1. With this arrangement, the stability of the extension of the two guide rails 1 is ensured by the connecting plates 4, preventing relative displacement between the two guide rails 1 and affecting the normal movement of the tray 2 on the guide rails 1.

[0041] As Figure 1 and Figure 2As shown, in this embodiment, a total of four connecting plates 4 are provided, evenly distributed along the length extension direction of the guide rail 1. Each connecting plate 4 is perpendicularly connected to two guide rails 1. The guide rail 1 is pressed above the connecting plate 4, and the connection between the two is achieved by means of bolts. According to the actual application situation, the specific shape and size of the connecting plate 4, the number of settings, as well as the specific connection position and connection method with the guide rail 1 can all be adjusted.

[0042] Optionally, the scaled-down car model moving device further includes a second sliding bearing 5. The second sliding bearing 5 is sleeved on the guide rail 1 and can slide along the guide rail 1. The tray 2 is fixedly connected to the second sliding bearing 5. The sliding bearing has a high load-bearing capacity, a long service life, and stable and reliable operation. With the above settings, the sliding connection between the tray 2 and the guide rail 1 is achieved by means of the second sliding bearing 5, which is beneficial to the long-term stable operation of the device.

[0043] As Figure 1 and Figure 2 As shown, in this embodiment, two second sliding bearings 5 are sleeved on each guide rail 1, and the distance between the two second sliding bearings 5 is approximately the length of the tray 2. The distance between the two guide rails 1 is approximately the width of the tray 2. The four corners of the tray 2 are respectively fixedly connected to the upper surface of a second sliding bearing 5. When it is necessary to move the scaled-down car model, the second sliding bearing 5 is pushed to make the second sliding bearing 5 slide along the guide rail 1, thereby driving the tray 2 connected to the second sliding bearing 5 and the scaled-down car model on the tray 2 to move. According to the actual application situation, the number of second sliding bearings 5 slidingly connected to each guide rail 1 can be adjusted, and the specific connection position of the second sliding bearing 5 with the guide rail 1 and the tray 2 can also be appropriately adjusted. The sliding bearing is a mature existing technology, and its specific structure and working principle will not be elaborated here. The second sliding bearing 5 in this embodiment adopts the SBR30UU standard sliding bearing.

[0044] Optionally, the scaled-down car model moving device further includes a second limiting post (not shown). Second limiting posts are respectively fixed at the opposite ends of the guide rail 1, and the second sliding bearing 5 is located between the second limiting posts at both ends of the guide rail 1. With this setting, the movement range of the second sliding bearing 5 is limited by means of the second limiting post, preventing the second sliding bearing 5 from disengaging from the guide rail 1 when it moves to both ends of the guide rail 1.

[0045] According to the actual application situation, the second limiting post can be installed at any position close to both ends of the guide rail 1, and its structural form can be adjusted arbitrarily, as long as the second limiting post can block the second sliding bearing 5 from continuing to move along the guide rail 1 when the second sliding bearing 5 moves to this position.

[0046] Optionally, the end of the support rod 33 away from the swing arm 32 is set as a cone. With this setting, it is convenient to smoothly insert the support rod 33 into the positioning hole pre-opened on the chassis of the scaled-down car model.

[0047] As Figure 1 and Figure 2 shown, in this embodiment, the upper end of each support rod 33 is processed into a conical head.

[0048] The present invention also provides a scaled wind tunnel test system, which includes a wind tunnel test bench, and further includes the scaled car model moving device described in any one of the above embodiments. The guide rail 1 of the scaled car model moving device extends to the wind tunnel test bench.

[0049] By using the scaled wind tunnel test system of the present invention, with the help of the linear movement of the swing arm 32 along the slide rail 31 and the rotation of the slide rail 31 relative to the tray 2, the support position matching between the support rod 33 and the scaled car models of different size specifications is realized, and the scaled car models are supported. At the same time, the guide rail 1 is extended to the wind tunnel test bench. With the help of the sliding of the tray 2 along the guide rail 1, the scaled car model on the tray 2 is driven to move synchronously. Compared with transporting the scaled car model by using other external devices, the sliding of the tray 2 driving the scaled car model along the guide rail 1 greatly improves the convenience of the moving process, and with the help of the sliding of the tray 2 along the guide rail 1, the rapid movement of the scaled car model can be realized.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A scaled-down car model moving device, characterized in that, Comprising: Two mutually parallel guide rails; A tray, the tray being slidably connected to the two guide rails; Multiple sets of support components, each support component comprising: A slide rail, one end of the slide rail being rotatably connected to the tray; A swing arm, the swing arm being slidably connected to the slide rail; A support rod, the support rod being fixedly connected to a side of the swing arm facing away from the slide rail.

2. The scaled-down car model moving device according to claim 1, characterized in that, Each support component further comprises: A first sliding bearing, the first sliding bearing sleeving the slide rail and being slidable along the slide rail, the swing arm being fixedly connected to the first sliding bearing.

3. The scaled-down car model moving device according to claim 2, characterized in that, Each support component further comprises: A first limit post, the first limit posts being respectively fixed at opposite ends of the slide rail, the first sliding bearing being located between the first limit posts at both ends of the slide rail.

4. The scaled-down car model moving device according to claim 2 or 3, wherein: A plurality of the first sliding bearings are provided.

5. The scaled-down car model moving device according to any one of claims 1 to 3, characterized in that, Each support component further comprises: A rotating shaft, the rotating shaft passing through the tray and one end of the slide rail, the rotating shaft being fixedly connected to the tray and rotatably connected to the slide rail.

6. The scaled-down car model moving device according to any one of claims 1-3, characterized in that, Further comprising: Multiple connecting plates, opposite ends of each connecting plate being respectively connected to the two guide rails.

7. The scaled-down car model moving device according to any one of claims 1 to 3, characterized in that, Further comprising: A second sliding bearing, the second sliding bearing sleeving the guide rail and being slidable along the guide rail, the tray being fixedly connected to the second sliding bearing.

8. The scaled-down car model moving device according to claim 7, wherein, Further comprising: A second limit post, the second limit posts being respectively fixed at opposite ends of the guide rail, the second sliding bearing being located between the second limit posts at both ends of the guide rail.

9. The scaled-down car model moving device according to any one of claims 1-3, wherein: One end of the support rod away from the swing arm is provided as a cone.

10. A scaled wind tunnel test system, including a wind tunnel test bench, characterized in that, Further comprising the scaled-down car model moving device according to any one of claims 1-9, the guide rail of the scaled-down car model moving device extending to a wind tunnel test bench.

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