Mounting device and optical platform for particle image velocity measurement

Abstract

The utility model discloses a mounting device and an optical platform for particle image velocimetry, the mounting device is used for connecting a PIV camera, the mounting device comprises a panel and a clamping assembly, the panel is used for connecting a platform plate, the clamping assembly comprises two clamping pieces, two sliding pieces and a driving piece, the two clamping pieces are arranged oppositely, and the two sliding pieces are arranged oppositely. A clamping gap for clamping the PIV camera is formed between the two clamping pieces, the sliding pieces are connected to the clamping pieces and can slide relative to the panel, the driving piece is provided with a fixed end and a movable end, the fixed end of the driving piece is connected to the panel, and the movable end of the driving piece is connected with the two sliding pieces and used for driving the two clamping pieces to slide close to each other or away from each other; therefore, the PIV camera is clamped or released. According to the utility model, the problem that the PIV camera is inconvenient to disassemble and assemble due to the lack of a fixing structure for detachably connecting the PIV camera to the panel can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid measurement, in particular to a mounting device and an optical platform for particle image velocity measurement. Background Art

[0002] In order to improve the accuracy of fluid measurement results, particle image velocimetry (PIV) technology came into being. The PIV camera can be installed on an optical platform.

[0003] For example, the Chinese invention patent application number CN201610004948.3 is titled: A mobile positioning device for particle image velocimetry, comprising a support frame, a lifting system, a mobile positioning platform, a laser mounting port, and a camera mounting platform; wherein the lifting system is mounted on the support frame and can move in the vertical direction; the mobile positioning platform is mounted on the lifting system, moves vertically with the lifting system, and can move horizontally along the length direction; a hollow area is provided in the middle of the panel of the mobile positioning platform as a laser mounting port for installing a PIV laser sheet light source; the camera mounting platform includes two groups, symmetrically arranged at both ends of the mobile positioning platform, for setting up a PIV camera; the laser mounting port and the camera mounting platform can move in two dimensions following the mobile positioning platform, realizing a dual-degree-of-freedom mobile positioning function. In order to improve stability, the PIV camera needs to be temporarily fixed to the panel, so a mounting structure is required to detachably connect the PIV camera to the panel.

[0004] Therefore, there is an urgent need for a mounting device and an optical platform for particle image velocimetry to solve the problem in the prior art that the PIV camera is detachably connected to the panel due to the lack of a fixed structure, which makes it inconvenient to disassemble and install the PIV camera. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose an installation device and an optical platform for particle image velocimetry to solve the technical problem in the prior art that the PIV camera is detachably connected to the panel due to the lack of a fixed structure, which makes the disassembly and installation of the PIV camera inconvenient.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a mounting device for connecting a PIV camera, comprising:

[0008] a panel for connecting the platform panels; and

[0009] The clamping assembly includes two clamping members, two sliding members and a driving member. The two clamping members are arranged opposite to each other, and a clamping gap for clamping a PIV camera is formed between the two clamping members. The sliding member is connected to the clamping members and can slide relative to the panel. The driving member has a fixed end and a movable end. The fixed end of the driving member is connected to the panel, and the movable end is connected to the two sliding members, and is used to drive the two clamping members to slide closer to or away from each other to clamp or release the PIV camera.

[0010] In some embodiments, the clamping member includes a clamping plate, which is L-shaped and has a connecting end and a clamping end. The clamping ends of the two clamping plates are arranged opposite to each other and enclose each other to form the clamping gap.

[0011] In some embodiments, the clamping member further includes a plurality of elastic abutment strips, which are parallel to each other and spaced apart, and connected to opposite sides of the clamping ends of the two clamping plates, and the elastic abutment strips can abut against the PIV camera.

[0012] In some embodiments, the panel is provided with two slide grooves, which are arranged parallel to or in line with each other. The sliding member includes a slide bar, one end of which is connected to the connecting end of the clamping plate and the other end is slidably inserted into the slide groove.

[0013] In some embodiments, the panel is further provided with a slot, which is communicated with both of the slide grooves, and the driving member includes a support plate, an insert block and a rotating part, the support plate is arranged between the panel and the clamping block, and the support plate has two through slots relative to the two slide bars, the other end of the slide bar passes through the through slot and is slidably inserted into the slide groove, and the connecting end of the clamping block is in contact with the support plate, one end of the insert block is connected to the support plate, and the other end is slidably inserted into the slot, the rotating part is rotatably connected to the insert block, and is transmission-connected to the two slide bars, for driving the two slide bars and the clamping block to slide closer or away from each other.

[0014] In some embodiments, the panel is further provided with a receiving groove, which is communicated with the slot, and the rotating part includes a rotating shaft, a gear and a rack, the rotating shaft is rotatably connected to the plug block and is slidably built into the receiving groove, the gear and the rotating shaft are coaxially arranged, the rack is fixedly connected to the inner wall of the receiving groove and can engage with the gear, and the plug block can drive the gear to rotate relative to the plug block by sliding along the guide of the slot.

[0015] In some embodiments, the rotating part further includes two nylon ropes, which are arranged in a one-to-one correspondence with the slide bar, one end of the nylon rope is connected to the slide bar, and the other end is wound around the rotating shaft, and the winding directions of the two nylon ropes are opposite.

[0016] In some embodiments, the rotating part also includes two springs, which are arranged in a one-to-one correspondence with the slide bar. One end of the spring is connected to the inner wall of the slide groove, and the other end is connected to the slide bar, which is used to drive the slide bar to automatically reset after sliding relative to the slide groove.

[0017] In some embodiments, the side wall of the slide bar is provided with at least one spherical groove relative to the inner wall of the slide groove, and the sliding member further includes at least one rolling portion, and the rolling portion is arranged in a one-to-one correspondence with the spherical groove, and the rolling portion rotates inside the spherical groove and abuts against the inner wall of the slide groove.

[0018] In a second aspect, the present invention further provides an optical platform for particle image velocimetry, comprising at least one platform plate and at least one mounting device as described above.

[0019] Compared to the prior art, the mounting device and optical platform for particle image velocimetry provided by the present invention have the following advantages: a panel is connected to the platform plate, two clamping members are arranged opposite each other, and a clamping gap is formed between the two clamping members for clamping a PIV camera, a sliding member is connected to the clamping member and can slide relative to the panel, and a driving member has a fixed end connected to the panel and a movable end connected to both sliding members, for driving the two clamping members to slide toward or away from each other to clamp the PIV camera. Compared to the prior art, by arranging a sliding member and a clamping member on the panel, the clamping member is slidably connected between the sliding member and the panel, and the movable end of the driving member is connected to both sliding members, the two oppositely arranged clamping members can slide toward or away from each other under the drive of the driving member to clamp or release the PIV camera, making it easier for the user to fix the PIV camera to the platform plate, thereby improving the stability of the measurement, and solving the technical problem in the prior art of detachably connecting the PIV camera to the panel due to the lack of a fixed structure, which makes it difficult to disassemble and install the PIV camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of a mounting device provided by an embodiment of the present utility model;

[0021] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of a mounting device provided by an embodiment of the present utility model;

[0022] Figure 3This is a partial cross-sectional three-dimensional structural schematic diagram of a mounting device provided by an embodiment of the present utility model from another perspective;

[0023] Figure 4 The utility model is provided in an embodiment of a three-dimensional structure diagram of a mounting device connected to an optical platform for particle image velocimetry.

[0024] Description of reference numerals:

[0025] Panel 1;

[0026] Clamping assembly 2;

[0027] Clamping member 21;

[0028] Clamping plate 211;

[0029] elastic abutment strip 212;

[0030] Sliding member 22;

[0031] slider221;

[0032] Rolling portion 222;

[0033] Driving member 23;

[0034] Support plate 231;

[0035] Insert 232;

[0036] Rotating portion 233;

[0037] Rotating shaft 2331;

[0038] Gear 2332;

[0039] Rack 2333;

[0040] Nylon rope 2334;

[0041] Spring 2335;

[0042] Platform plate 3;

[0043] First translation member 4;

[0044] Lifting member 5;

[0045] The second translation member 6. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] In order to solve the technical problem in the prior art that the PIV camera is detachably connected to the panel 1 due to the lack of a fixed structure, thereby making it inconvenient to disassemble and install the PIV camera, the utility model provides an installation device and an optical platform for particle image velocimetry, which can enable two relatively arranged clamping members 21 to slide towards or away from each other under the drive of a driving member 23 to clamp or release the PIV camera, making it convenient for the user to fix the PIV camera on the platform plate 3, thereby improving the stability of the measurement.

[0048] It should be noted that the mounting device and the optical platform for particle image velocimetry described in the present invention are used for but not limited to the field of fluid measurement technology. For the sake of convenience, in the present invention, only the application of the mounting device and the optical platform for particle image velocimetry in the field of fluid measurement technology is used as an example for explanation. The principles of applying the mounting device and the optical platform for particle image velocimetry in other types of equipment are essentially the same as those applied in the field of fluid measurement technology, and will not be elaborated here.

[0049] See also Figures 1 to 4 , Figures 1 to 3 This is a structural schematic diagram of an installation device and an optical platform for particle image velocimetry in one embodiment of the utility model. The installation device is used to connect a PIV camera, and includes: a panel 1 and a clamping assembly 2. The panel 1 is used to connect to a platform plate 3. The clamping assembly 2 includes two clamping members 21, two sliding members 22 and a driving member 23. The two clamping members 21 are arranged opposite to each other, and a clamping gap for clamping the PIV camera is formed between the two clamping members 21. The sliding member 22 is connected to the clamping member 21 and can slide relative to the panel 1. The driving member 23 has a fixed end and a movable end. The fixed end of the driving member 23 is connected to the panel 1, and the movable end is connected to both sliding members 22, and is used to drive the two clamping members 21 to slide closer to or away from each other to clamp or release the PIV camera.

[0050] In this device, the panel 1 is used to be connected to the platform plate 3, the two clamping members 21 are arranged opposite to each other, and a clamping gap is formed between the two clamping members 21 for clamping the PIV camera, the sliding member 22 is connected to the clamping member 21, and can slide relative to the panel 1, the fixed end of the driving member 23 is connected to the panel 1, and the movable end is connected to the two sliding members 22, and is used to drive the two clamping members 21 to slide closer to or away from each other to clamp the PIV camera.

[0051] Compared with the prior art, a sliding member 22 and a clamping member 21 are provided on the panel 1, and the clamping member 21 is slidably connected to the panel 1 via the sliding member 22, and the movable end of the driving member 23 is connected to both sliding members 22, so that the two relatively arranged clamping members 21 can slide closer to or away from each other under the drive of the driving member 23 to clamp or release the PIV camera, making it convenient for the user to fix the PIV camera on the platform plate 3, thereby improving the stability of the measurement, and solving the technical problem in the prior art that the PIV camera is detachably connected to the panel 1 due to the lack of a fixed structure, thereby making it inconvenient to disassemble and install the PIV camera.

[0052] Furthermore, the PIV camera in this device utilizes particle image velocimetry (PIV), a scientific instrument used for laser fluid dynamics velocity measurement. PIV technology involves scattering tracer particles in the measured flow field. Under illumination from a laser sheet, an image recording device continuously acquires time-series images. Image processing algorithms are then applied to determine the particle displacement within the images, allowing calculation of motion parameters such as the velocity vector at each point in the flow field. This is a conventional setup well known to those skilled in the art and will not be elaborated upon here.

[0053] Furthermore, a panel 1 is provided on the platform, and the panel 1 is used to place and install the PIV camera during measurement, which will not be described in detail here.

[0054] In this embodiment, the clamping member 21 includes a clamping plate 211 and a plurality of elastic abutting strips 212 .

[0055] The clamping plate 211 is L-shaped and has a connecting end and a clamping end. The clamping ends of the two clamping plates 211 are arranged opposite to each other and enclose a clamping gap.

[0056] When the two L-shaped clamping plates 211 are brought close to each other, they can wrap the PIV camera, thereby improving the stability of the connection between the PIV camera and the panel 1.

[0057] In one embodiment, referring to the figure, a plurality of elastic abutting strips 212 are arranged parallel to each other and spaced apart, and are connected to opposite sides of the clamping ends of the two clamping plates 211. The elastic abutting strips 212 can abut against the PIV camera.

[0058] A plurality of elastic abutment strips 212 are provided between the clamping plate 211 and the PIV camera to prevent the clamping force formed by the two clamping blocks from damaging the PIV camera.

[0059] Furthermore, the elastic abutment strip 212 here is a sponge strip commonly found and purchased on the market, which is a conventional setting well known to those skilled in the art and will not be described in detail here.

[0060] In this embodiment, the sliding member 22 includes a sliding bar 221 and at least one rolling portion 222 .

[0061] The panel 1 is provided with two sliding grooves, which are arranged parallel to or in a colinear relationship with each other. One end of the slide bar 221 is connected to the connecting end of the clamping plate 211 , and the other end is slidably inserted into the sliding groove.

[0062] The sliding groove plays a role in connecting and guiding the sliding of the slide bar 221.

[0063] Specifically, as a preferred embodiment of the present device, the extension lines of the two chutes are collinear.

[0064] In this embodiment, Figure 2 、 Figure 3 As shown, the panel 1 is also provided with a slot, which is connected to both slide grooves. The driving member 23 includes a support plate 231, an insert block 232 and a rotating part 233. The support plate 231 is arranged between the panel 1 and the clamping block. The support plate 231 has two through slots relative to the two slide bars 221. The other end of the slide bar 221 passes through the through slot and is slidably inserted into the slide groove, and the connecting end of the clamping block is in contact with the support plate 231. One end of the insert block 232 is connected to the support plate 231, and the other end is slidably inserted into the slot. The rotating part 233 is rotatably connected to the insert block 232 and is transmission-connected to the two slide bars 221 for driving the two slide bars 221 and the clamping block to slide closer to or away from each other.

[0065] The support plate 231 is used to support the clamping block. Under the action of its own gravity, the clamping block with the PIV camera placed thereon drives the clamping block to be inserted into the slot together with the support plate 231 and the insert block 232. At the same time, the rotating part 233 can rotate relative to the insert block 232, and drive the two sliders 221 and the clamping block to move closer to each other to clamp the PIV camera. Conversely, the rotating part 233 can rotate relative to the insert block 232, driving the two sliders 221 and the clamping block away from each other to release the PIV camera.

[0066] Furthermore, the gravity of the PIV camera placed on the clamping block is used to push the insert block 232 and the support plate 231 to slide relative to the panel 1. The sliding insert block 232 can be converted into a driving force to drive the two slide bars 221 to move relative to each other.

[0067] In one embodiment, see Figure 2 、 Figure 3As shown, the panel 1 is also provided with a receiving groove, which is connected to the slot. The rotating part 233 includes a rotating shaft 2331, a gear 2332 and a rack 2333. The rotating shaft 2331 is rotatably connected to the plug block 232 and is slidably built into the receiving groove. The gear 2332 is coaxially arranged with the rotating shaft 2331. The rack 2333 is fixedly connected to the inner wall of the receiving groove and can engage with the gear 2332. The plug block 232 slides along the guide of the slot to drive the gear 2332 to rotate relative to the plug block 232.

[0068] The gear 2332 is rotatably connected to the inserting block 232 via the rotating shaft 2331 . As the inserting block 232 is inserted into the slot, the gear 2332 can mesh with the rack 2333 in the slot, so that the gear 2332 and the rotating shaft 2331 can rotate relative to the inserting block 232 .

[0069] Furthermore, the gear 2332 and the rack 2333 are both common and easily purchased devices on the market. They are conventional settings well known to those skilled in the art and will not be described in detail here.

[0070] In one embodiment, see Figure 2 、 Figure 3 As shown, the rotating part 233 also includes two nylon ropes 2334, which are arranged in a one-to-one correspondence with the slide bar 221. One end of the nylon rope 2334 is connected to the slide bar 221, and the other end is wound around the rotating shaft 2331, and the winding directions of the two nylon ropes 2334 are opposite.

[0071] Through the transmission of the nylon rope 2334, the rotating shaft 2331 can drive the two sections of nylon rope 2334 to be wound around the rotating shaft 2331 in opposite directions respectively. As the length of the nylon rope 2334 changes, the slide bar 221 is pulled to slide relative to the slide groove.

[0072] Furthermore, the nylon rope 2334 here is a common and easily purchased device on the market. It is a conventional setting well known to those skilled in the art and will not be described in detail here.

[0073] In one embodiment, see Figure 2 、 Figure 3 As shown, the rotating part 233 also includes two springs 2335, which are arranged in a one-to-one correspondence with the slide bar 221. One end of the spring 2335 is connected to the inner wall of the slide groove, and the other end is connected to the slide bar 221, which is used to drive the slide bar 221 to automatically reset after sliding relative to the slide groove.

[0074] The elastic restoring force generated by the two springs 2335 can drive the slide bar 221 to automatically reset after sliding, thereby driving the nylon rope 2334 and the gear 2332 to automatically reset, making it convenient for next installation and use.

[0075] Furthermore, the spring 2335 here can also be a spring. The spring 2335 and the spring are both conventional settings well known to those skilled in the art, and will not be described in detail here.

[0076] In one embodiment, see Figure 2 、 Figure 3 As shown, at least one spherical groove is opened on the inner wall of the chute, and the rolling part 222 is arranged in a one-to-one correspondence with the spherical groove. The rolling part 222 rotates and is built into the spherical groove and abuts against the inner wall of the chute.

[0077] The rolling portion 222 is rotatably embedded in the spherical groove to reduce friction when the slide bar 221 slides relative to the slide groove.

[0078] In one embodiment of the present invention, an optical platform for particle image velocimetry is provided, which includes at least one platform plate 3 and at least one mounting device.

[0079] Specifically, such as Figure 4 As shown, the optical platform for particle image velocimetry also includes a base plate and at least one platform assembly, the platform assembly including a platform plate 3, a first translation member 4, a lifting member 5 and a second translation member 6. The first translation member 4 is connected to the platform plate 3 and is used to drive the platform plate 3 to translate relative to the base plate along a first direction. The lifting member 5 is connected to the first translation member 4 and is used to drive the platform plate 3 to translate relative to the base plate along a second direction. The second translation member 6 is connected to the lifting member 5 and is used to drive the platform plate 3 to translate relative to the base plate along a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0080] Furthermore, by setting a first translation member 4, a lifting member 5 and a second translation member 6, the platform plate 3 is slidably set on the base plate, so that the platform plate 3 can be translated relative to the base plate along the first direction, the second direction and the third direction respectively, that is, the platform plate 3 can drive the camera to slide relative to the base plate along the X axis, the Y axis and the Z axis of the plane rectangular coordinate system respectively, and can realize three-degree-of-freedom movement.

[0081] In order to better understand the present invention, the following Figures 1 to 4The technical solution of the present invention is described in detail: The mounting device and the optical platform for particle image velocimetry provided by the present invention have the following beneficial effects: the panel 1 is used to be connected to the platform plate 3, the two clamping members 21 are arranged opposite each other, and a clamping gap is formed between the two clamping members 21 for clamping the PIV camera, the sliding member 22 is connected to the clamping member 21 and can slide relative to the panel 1, and the driving member 23 has a fixed end connected to the panel 1 and a movable end connected to both the sliding members 22, and is used to drive the two clamping members 21 to slide towards or away from each other to clamp the PIV camera. Compared with the prior art, by arranging the sliding member 22 and the clamping member 21 on the panel 1, the clamping member 21 is slidably connected between the sliding member 22 and the panel 1, and the movable end of the driving member 23 is connected to both the sliding members 22, so that the two oppositely arranged clamping members 21 can slide towards or away from each other under the drive of the driving member 23 to clamp or release the PIV camera, making it convenient for the user to fix the PIV camera on the platform plate 3, thereby improving the stability of the measurement.

[0082] The specific working process of the present invention is that when in use, the user first places the PIV camera in the clamping gap between the two clamping plates 211. Due to the gravity of the support plate 231 and the PIV camera, the support plate 231 and the plug block 232 are pushed into the slot together. Then, during the process of inserting the plug block 232 into the slot, the gear 2332 continuously engages with the rack 2333 and drives the rotating shaft 2331 to rotate relative to the plug block 232. Finally, the rotating rotating shaft 2331 winds the two sections of nylon rope 2334 onto the rotating shaft 2331 in opposite directions, so that the length of the two sections of nylon rope 2334 connecting the slide bar 221 is reduced, thereby being able to pull the two slide bars 221 closer to each other and slide the clamping plate 211 against the side wall of the PIV camera, where multiple elastic abutment strips 212 are tightly abutted against the side wall of the PIV camera.

[0083] Furthermore, when the PIV camera needs to be removed from the panel 1, the user only needs to pick up the PIV camera with force. Here, the PIV camera is separated from the clamping plate 211, and the pressure acting on the support plate 231 disappears. Driven by the elastic restoring force of the spring 2335, the nylon rope 2334 is separated from the rotating shaft 2331, and drives the two slide bars 221 to slide away from each other. The clamping plates 211 are separated from each other, and the user can easily take the PIV camera out of the clamping gap.

[0084] The device, through the above structure, can solve the technical problem in the prior art that the PIV camera is detachably connected to the panel 1 due to the lack of a fixed structure, thereby causing inconvenience in disassembling and installing the PIV camera.

[0085] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A mounting device for connecting a PIV camera, characterized in that: include: a panel for connecting the platform panels; and The clamping assembly includes two clamping members, two sliding members and a driving member. The two clamping members are arranged opposite to each other, and a clamping gap for clamping a PIV camera is formed between the two clamping members. The sliding member is connected to the clamping members and can slide relative to the panel. The driving member has a fixed end and a movable end. The fixed end of the driving member is connected to the panel, and the movable end is connected to the two sliding members, and is used to drive the two clamping members to slide closer to or away from each other to clamp or release the PIV camera.

2. The mounting device according to claim 1, wherein: The clamping member includes a clamping plate, which is L-shaped and has a connecting end and a clamping end. The clamping ends of the two clamping plates are arranged opposite to each other and enclose each other to form the clamping gap.

3. The mounting device according to claim 2, wherein: The clamping member further includes a plurality of elastic abutment strips, which are parallel to each other and spaced apart and connected to opposite sides of the clamping ends of the two clamping plates. The elastic abutment strips can abut against the PIV camera.

4. The mounting device according to claim 3, wherein: The panel is provided with two slide grooves, which are arranged parallel to or in a colinear manner. The sliding member includes a slide bar, one end of which is connected to the connecting end of the clamping plate, and the other end is slidably inserted into the slide groove.

5. The mounting device according to claim 4, characterized in that The panel also has a slot, which is connected to the two slide slots, and the driving member includes a support plate, an insert block and a rotating part, the support plate is arranged between the panel and the clamping block, and the support plate has two through slots relative to the two slide bars, the other end of the slide bar passes through the through slot and is slidably inserted in the slide slot, and the connecting end of the clamping block abuts against the support plate, one end of the insert block is connected to the support plate, and the other end is slidably inserted in the slot, the rotating part is rotatably connected to the insert block, and is transmission-connected to the two slide bars, for driving the two slide bars and the clamping block to slide closer to or away from each other.

6. The mounting device according to claim 5, characterized in that The panel is also provided with a receiving groove, which is communicated with the slot. The rotating part includes a rotating shaft, a gear and a rack. The rotating shaft is rotatably connected to the plug-in block and is slidably built into the receiving groove. The gear is coaxially arranged with the rotating shaft. The rack is fixedly connected to the inner wall of the receiving groove and can engage with the gear. The plug-in block can drive the gear to rotate relative to the plug-in block by sliding along the guide of the slot.

7. The mounting device according to claim 6, characterized in that The rotating part also includes two nylon ropes, which are arranged in a one-to-one correspondence with the slide bars. One end of the nylon rope is connected to the slide bar, and the other end is wound around the rotating shaft, and the winding directions of the two nylon ropes are opposite.

8. The mounting device according to claim 7, characterized in that The rotating part also includes two springs, which are arranged in a one-to-one correspondence with the slide bars. One end of the spring is connected to the inner wall of the slide groove, and the other end is connected to the slide bar, which is used to drive the slide bar to automatically reset after sliding relative to the slide groove.

9. The mounting device according to claim 8, characterized in that The side wall of the slide bar is provided with at least one spherical groove relative to the inner wall of the slide groove. The sliding member also includes at least one rolling portion, which is arranged in a one-to-one correspondence with the spherical groove. The rolling portion rotates inside the spherical groove and abuts against the inner wall of the slide groove.

10. An optical platform for particle image velocimetry, characterized in that: The device comprises at least one platform plate and at least one mounting device according to any one of claims 1 to 9.

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