Multi-degree-of-freedom integrated PIV experiment calibration board fixing platform

Abstract

The utility model relates to the technical field of fluid mechanics experiments, in particular to a multi-degree-of-freedom integrated PIV experiment calibration plate fixing platform which comprises a support, a bottom plate, a moving assembly, a cantilever outer beam, a cantilever inner beam, a screw, a universal joint, a lower cantilever, a supporting plate and a horizontal mounting assembly. The support is fixedly connected with the bottom plate, the moving assembly is arranged in the support, the cantilever outer beam is arranged on one side of the moving assembly, the cantilever inner beam is in sliding connection with the cantilever outer beam, the screw penetrates through the cantilever outer beam to be in threaded connection with the cantilever inner beam, the universal joint is in threaded connection with the cantilever inner beam, and the lower cantilever is fixedly connected with the universal joint. The problem that the degree of freedom of adjustment of the calibration plate in different spatial dimensions is single is solved, the flexibility of position adjustment of the calibration plate is improved, the integration degree is higher, and the calibration plate can meet the multifunctional requirement of a complex experimental environment.

Description

Technical Field

[0001] This utility model relates to the field of fluid mechanics experimental technology, and in particular to a multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform. Background Art

[0002] In the field of fluid mechanics experimental technology, PIV (Portable Image Verification) technology, as a non-contact flow field measurement method, is widely used for the precise measurement and analysis of fluid motion. Its core lies in acquiring velocity field information by tracking the motion of tracer particles. In PIV experiments, the calibration process is a crucial step in ensuring the spatial accuracy and reliability of the measurement data. By using a regular pattern with known geometric features on a calibration plate, a mapping relationship between the camera image plane and the actual physical space can be established, clarifying the correspondence between pixels and physical dimensions, and determining the spatial position of the measurement plane, thereby effectively improving the accuracy and reliability of the experimental data. Therefore, precise control of the calibration plate position is essential for ensuring the accuracy of the calibration results and the overall reliability of the experiment.

[0003] Existing calibration methods have limitations in complex experimental environments. The installation and adjustment of calibration plates in different spatial dimensions often present operational difficulties. Commonly used calibration devices generally employ a single-degree-of-freedom adjustment design, which is functionally limited and lacks integrated structure, failing to meet the demands for flexible adjustment and multi-functional adaptation of calibration plate positions in complex experimental environments. This limited-degree-of-freedom and non-integrated adjustment method restricts the adaptability of the device in multi-dimensional space, increases experimental time costs, and reduces the reliability of measurement results.

[0004] To address the aforementioned issues, a device is proposed that enables precise positioning and flexible adjustment of the calibration plate in complex experimental environments. This device integrates multiple functional modules to adapt to diverse experimental needs. Through optimized structural design and functional integration, calibration efficiency is significantly improved, data reliability is effectively guaranteed, and the high-precision calibration requirements under complex experimental conditions are met. Utility Model Content

[0005] The purpose of this invention is to provide a multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform. This platform is suitable for PIV experimental calibration in various complex environments, aiming to solve the problem of existing technologies having only one degree of freedom, which cannot quickly and accurately fix the calibration plate under complex experimental conditions. This fixing platform significantly improves the flexibility and positioning accuracy of the calibration process, effectively adapts to various complex experimental environments, and thus improves the overall efficiency and data reliability of PIV experiments.

[0006] To achieve the above objectives, this utility model provides a multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform, including a bracket, a base plate, a moving component, a cantilever outer beam, a cantilever inner beam, screws, a universal joint, a lower cantilever, a support plate, and a horizontal mounting component. The bracket is fixedly connected to the base plate and located above the base plate. The moving component is disposed inside the bracket. The cantilever outer beam is disposed on one side of the moving component. The cantilever inner beam is slidably connected to the cantilever outer beam and located at one end of the cantilever outer beam. The screw passes through the cantilever outer beam and is threadedly connected to the cantilever inner beam and located at one end of the cantilever outer beam. The universal joint is threadedly connected to the cantilever inner beam and located at one end of the cantilever outer beam. The lower cantilever is fixedly connected to the universal joint and located at one end of the universal joint. The support plate is bolted to the lower cantilever and located below the lower cantilever. The horizontal mounting component is disposed below the support plate.

[0007] The movable component includes two bearings, a lead screw, a sliding block, a turntable, a handle, and a connecting flange. The two bearings are fixedly connected to the bracket and are respectively located at both ends of the bracket. The two ends of the lead screw are fixedly connected to the two bearings respectively and are located inside the bracket. The turntable is fixedly connected to the lead screw and is located above the lead screw. The handle is rotatably connected to the turntable and is located above the turntable. The sliding block is threadedly connected to the lead screw and covers the surface of the lead screw. One end of the connecting flange is bolted to the sliding block, and the other end of the connecting flange is fixedly connected to the cantilever outer beam.

[0008] The horizontal installation assembly includes five levels and four fixing structures. The five levels are fixedly connected to the tray and are respectively located at the four bottom corners and the center of the tray. The four fixing structures are respectively located on both sides of the tray.

[0009] The fixing structure includes a spring and a clip. The clip is slidably connected to the tray and is located on one side of the tray. One end of the spring is fixedly connected to the clip, and the other end of the spring is fixedly connected to the tray.

[0010] The universal joint includes two rotating blocks, two first damping shafts and a second damping shaft. The two ends of the second damping shaft are fixedly connected to the two rotating blocks respectively. The two first damping shafts are fixedly connected to the corresponding rotating blocks and are respectively disposed on one side of the corresponding rotating block.

[0011] The base plate has several drainage holes on its surface.

[0012] This utility model discloses a multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform. The movable component is disposed inside the bracket. The cantilever outer beam is disposed on one side of the movable component. The cantilever inner beam is slidably connected to the cantilever outer beam and is located at one end of the cantilever outer beam. The screw passes through the cantilever outer beam and is threadedly connected to the cantilever inner beam and is located at one end of the cantilever outer beam. The universal joint is threadedly connected to the cantilever inner beam and is located at one end of the cantilever outer beam. The lower cantilever is fixedly connected to the universal joint and is located at one end of the universal joint. The support plate is bolted to the lower cantilever and is located below the lower cantilever. The horizontal mounting component is disposed below the support plate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform of this utility model.

[0015] Figure 2 This is the utility model Figure 1 A schematic diagram of the structure at point A.

[0016] Figure 3 This is the utility model Figure 1 A schematic diagram of the structure at point B.

[0017] Figure 4 This is the utility model Figure 1 A schematic diagram of the structure at point C.

[0018] Figure 5 This is the utility model Figure 1 A schematic diagram of the structure at point D.

[0019] Figure 6 This is a schematic diagram of the universal joint structure of this utility model.

[0020] 1-Bracket, 2-Base plate, 3-Drain hole, 4-Level, 5-Cantilever outer beam, 6-Cantilever inner beam, 7-Screw, 8-Lower cantilever, 9-Panel, 10-Bearing, 11-Screw rod, 12-Sliding block, 13-Turntable, 14-Handle, 15-Connecting flange, 16-Spring, 17-Card holder, 18-Rotating block, 19-First damping shaft, 20-Second damping shaft. DETAILED DESCRIPTION

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] Please see Figures 1 to 6 This utility model provides a multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform, including a bracket 1, a base plate 2, a moving component, a cantilever outer beam 5, a cantilever inner beam 6, a screw 7, a universal joint, a lower cantilever 8, a support plate 9, and a horizontal mounting component. The bracket 1 is fixedly connected to the base plate 2 and is located above the base plate 2. The moving component is disposed inside the bracket 1. The cantilever outer beam 5 is disposed on one side of the moving component. The cantilever inner beam 6 is slidably connected to the cantilever outer beam 5 and is located at one end of the cantilever outer beam 5. The screw 7 passes through the cantilever outer beam 5 and is threadedly connected to the cantilever inner beam 6 and is located at one end of the cantilever outer beam 5. The universal joint is threadedly connected to the cantilever inner beam 6 and is located at one end of the cantilever outer beam 5. The lower cantilever 8 is fixedly connected to the universal joint and is located at one end of the universal joint. The support plate 9 is bolted to the lower cantilever 8 and is located below the lower cantilever 8. The horizontal mounting component is disposed below the support plate 9.

[0023] In this embodiment, during use, the cantilever outer beam 5 is moved by the moving component. The cantilever outer beam 5 is moved, and the cantilever inner beam 6 is slid according to the installation position. After the position of the cantilever inner beam 6 is adjusted, the screw 7 is rotated. The screw 7 presses on the cantilever outer beam 5 to fix the cantilever inner beam 6.

[0024] Furthermore, the moving assembly includes two bearings 10, a lead screw 11, a sliding block 12, a turntable 13, a handle 14, and a connecting flange 15. The two bearings 10 are fixedly connected to the bracket 1 and are respectively disposed at both ends of the bracket 1. The two ends of the lead screw 11 are respectively fixedly connected to the two bearings 10 and are located inside the bracket 1. The turntable 13 is fixedly connected to the lead screw 11 and is located above the lead screw 11. The handle 14 is rotatably connected to the turntable 13 and is located above the turntable 13. The sliding block 12 is threadedly connected to the lead screw 11 and covers the surface of the lead screw 11. One end of the connecting flange 15 is bolted to the sliding block 12, and the other end of the connecting flange 15 is fixedly connected to the cantilever outer beam 5.

[0025] In this embodiment, the turntable 13 is rotated by the handle 14, and the turntable 13 drives the two lead screws 11 to rotate. Under the constraint of the bracket 1, the sliding block 12 moves accordingly, thereby changing the position of the tray 9.

[0026] Furthermore, the horizontal mounting assembly includes five levels 4 and four fixing structures. The five levels 4 are fixedly connected to the support plate 9 and are respectively located at the four bottom corners and the center of the support plate 9. The four fixing structures are respectively located on both sides of the support plate 9.

[0027] In this embodiment, the calibration plate is fixed above the support plate 9, and the level 4 facilitates the alignment of the calibration plate and provides a reference for leveling the calibration plate.

[0028] Furthermore, the fixing structure includes a spring 16 and a clip 17. The clip 17 is slidably connected to the tray 9 and is located on one side of the tray 9. One end of the spring 16 is fixedly connected to the clip 17, and the other end of the spring 16 is fixedly connected to the tray 9.

[0029] In this embodiment, the calibration plate is fixed by the card holder 17, and the spring 16 pulls the card holder 17 to provide tension for the card holder 17 to fix the calibration plate.

[0030] Furthermore, the universal joint includes two rotating blocks 18, two first damping shafts 19 and a second damping shaft 20. The two ends of the second damping shaft 20 are respectively fixedly connected to the two rotating blocks 18, and the two first damping shafts 19 are fixedly connected to the corresponding rotating blocks 18 and are respectively disposed on one side of the corresponding rotating block 18.

[0031] In this embodiment, both the first damping shaft 19 and the second damping shaft 20 are provided with damping, which improves the adjustment range of the lower cantilever 8. The first damping shaft 19 can rotate 180°, and the second damping shaft 20 can rotate 360°.

[0032] Furthermore, the surface of the base plate 2 is provided with a plurality of drainage holes 3.

[0033] In this embodiment, the presence of the drainage hole 3 reduces the weight of the base plate 2.

[0034] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform, comprising a support and a base plate, wherein the support is fixedly connected to the base plate and is located above the base plate, characterized in that, It also includes a movable component, a cantilever outer beam, a cantilever inner beam, screws, a universal joint, a lower cantilever, a support plate, and a horizontal mounting assembly. The movable component is disposed inside the bracket. The cantilever outer beam is disposed on one side of the movable component. The cantilever inner beam is slidably connected to the cantilever outer beam and is located at one end of the cantilever outer beam. The screw passes through the cantilever outer beam and is threadedly connected to the cantilever inner beam and is located at one end of the cantilever outer beam. The universal joint is threadedly connected to the cantilever inner beam and is located at one end of the cantilever outer beam. The lower cantilever is fixedly connected to the universal joint and is located at one end of the universal joint. The support plate is bolted to the lower cantilever and is located below the lower cantilever. The horizontal mounting assembly is disposed below the support plate.

2. The multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform as described in claim 1, characterized in that, The moving assembly includes two bearings, a lead screw, a sliding block, a turntable, a handle, and a connecting flange. The two bearings are fixedly connected to the bracket and are respectively located at both ends of the bracket. The two ends of the lead screw are respectively fixedly connected to the two bearings and are located inside the bracket. The turntable is fixedly connected to the lead screw and is located above the lead screw. The handle is rotatably connected to the turntable and is located above the turntable. The sliding block is threadedly connected to the lead screw and covers the surface of the lead screw. One end of the connecting flange is bolted to the sliding block, and the other end of the connecting flange is fixedly connected to the cantilever outer beam.

3. The multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform as described in claim 2, characterized in that, The horizontal mounting assembly includes five levels and four fixing structures. The five levels are fixedly connected to the tray and are respectively located at the four bottom corners and the center of the tray. The four fixing structures are respectively located on both sides of the tray.

4. The multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform as described in claim 3, characterized in that, The fixing structure includes a spring and a clip. The clip is slidably connected to the tray and is located on one side of the tray. One end of the spring is fixedly connected to the clip, and the other end of the spring is fixedly connected to the tray.

5. The multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform as described in claim 4, characterized in that, The universal joint includes two rotating blocks, two first damping shafts and a second damping shaft. The two ends of the second damping shaft are fixedly connected to the two rotating blocks respectively. The two first damping shafts are fixedly connected to the corresponding rotating blocks and are respectively disposed on one side of the corresponding rotating block.

6. The multi-degree-of-freedom integrated PIV experimental calibration plate fixing platform as described in claim 5, characterized in that, The surface of the base plate is provided with several drainage holes.

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