Optical platform for particle image velocity measurement

Abstract

The optical platform is used for being connected with a PIV camera and comprises a base, a supporting seat, a rotating assembly and an adjusting assembly, the supporting seat is arranged above the base, the rotating assembly comprises a rotating piece and a driving piece, the rotating piece is connected to the supporting seat and is rotationally connected with the base, and the driving piece is connected with the base. The driving part is connected with the base and the rotating part and used for driving the supporting seat to rotate around the first direction as the axis relative to the base, the adjusting assembly is connected with the supporting seat and the PIV camera and used for driving the PIV camera to horizontally move in the first direction, the second direction and the third direction relative to the base, and every two of the first direction, the second direction and the third direction are perpendicular to each other. According to the utility model, the problem that the PIV camera is inconvenient to use because the PIV camera can only realize two-dimensional movement after being mounted on an optical platform but is not suitable for use scenes with more-degree-of-freedom movement can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid measurement, and particularly relates to an optical platform for particle image velocimetry. Background Art

[0002] With the continuous development of PIV technology, it is widely used in various fields.

[0003] For example, the Chinese invention patent with the application number: CN201610004948.3 and the name: A mobile positioning device for particle image velocimetry, includes a support frame, a lifting system, a mobile positioning platform, a laser installation port, and a camera installation platform; wherein, the lifting system is installed on the support frame and can move vertically; the mobile positioning platform is installed on the lifting system, follows the vertical movement of 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 the laser installation port for installing the PIV laser sheet light source; the camera installation platform includes two groups, symmetrically arranged at both ends of the mobile positioning platform for mounting the PIV camera; the laser installation port and the camera installation platform can move two-dimensionally following the mobile positioning platform to achieve the two-degree-of-freedom mobile positioning function. However, after the PIV camera is installed on the optical platform, it can only achieve two-dimensional movement and cannot meet the usage requirements of more degrees of freedom movement.

[0004] Therefore, there is an urgent need for an optical platform for particle image velocimetry to solve the problem in the prior art that the PIV camera can only achieve two-dimensional movement after being installed on the optical platform but is not suitable for the usage scenarios of more degrees of freedom movement, resulting in inconvenient use. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose an optical platform for particle image velocimetry to solve the technical problem that in the prior art, the PIV camera can only achieve two-dimensional movement after being installed on the optical platform but is not suitable for the usage scenarios of more degrees of freedom movement, resulting in inconvenient use.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an optical platform for particle image velocimetry, used for connecting a PIV camera, including:

[0008] A base;

[0009] A support seat, arranged above the base;

[0010] The rotating assembly includes a rotating member and a driving member. The rotating member is connected to the support base and is rotatably connected to the base. The driving member is connected to both the base and the rotating member and is used to drive the support base to rotate relative to the base about an axis in a first direction; and

[0011] The adjusting assembly is connected to both the support base and the PIV camera and is used to drive the PIV camera to translate relative to the base in a first direction, a second direction, and a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0012] In some embodiments, the rotating member includes a rotating base and a rotating shaft. The rotating base is connected to the base and is provided with a rotating hole along the first direction. One end of the rotating shaft is rotatably inserted into the rotating hole, and the other end is connected to the support base.

[0013] In some embodiments, the driving member includes a rotating gear, a driving gear, and a driving motor. The rotating gear is fixedly sleeved on the rotating shaft. The driving gear is rotatably connected to the base and meshes with the rotating gear. The fixed end of the driving motor is connected to the base, and the output shaft is connected to the driving gear and is used to drive the rotating gear, the rotating shaft, and the rotating shaft to rotate relative to the base.

[0014] In some embodiments, the driving member further includes a first transmission gear and a second transmission gear. The first transmission gear can rotate relative to the base and meshes with the rotating gear, and the pitch diameter of the first transmission gear is smaller than the pitch diameter of the rotating gear. The second transmission gear is coaxially arranged with the first transmission gear and meshes with the driving gear, and the pitch diameter of the second transmission gear is smaller than the pitch diameter of the rotating gear. The pitch diameter of the second transmission gear is smaller than the pitch diameter of the first transmission gear.

[0015] In some embodiments, the rotating assembly further includes a limiting member. The limiting member includes at least one first limiting block and at least one second limiting block. The first limiting block is connected to either the rotating base or the rotating gear. The second limiting block is arranged opposite to the first limiting block and is connected to the other of the rotating base or the rotating gear. The second limiting block can abut against the first limiting block to limit the further rotation of the rotating shaft and the rotating gear relative to the base.

[0016] In some embodiments, the number of the first limiting blocks and the second limiting blocks in the limiting member is two respectively. The two first limiting blocks are oppositely arranged in the circumferential direction of the rotating seat and are both connected to the rotating seat. The second limiting blocks are arranged in one-to-one correspondence with the first limiting blocks. The two second limiting blocks are both connected to the rotating gear and can respectively abut against the first limiting blocks to limit the rotation angle of the rotating gear relative to the rotating seat.

[0017] In some embodiments, the rotating seat is provided with a plurality of first mounting holes along its circumferential direction. The first limiting block is detachably connected to the first mounting hole. The rotating gear is provided with a second mounting hole opposite to the first mounting hole. The second limiting block is detachably connected to the second mounting hole.

[0018] In some embodiments, the adjusting assembly includes at least one platform plate, a first translation member, a lifting member and a second translation member. The platform plate is arranged above the support seat. The first translation member is connected to the platform plate and is used to drive the platform plate to translate relative to the base along a second direction. The lifting member is connected to the first translation member and is used to drive the platform plate to translate relative to the base along a first direction. The second translation member is connected to the lifting member and is used to drive the platform plate to translate relative to the base along a third direction.

[0019] In some embodiments, the optical platform for particle image velocimetry further includes four universal wheels. The four universal wheels are evenly distributed at the four right angles of the base and are all connected to the bottom of the base.

[0020] In some embodiments, the optical platform for particle image velocimetry further includes four telescopic support platforms. The telescopic support platforms are arranged in one-to-one correspondence with the universal wheels. The telescopic support platforms are spaced apart from the universal wheels and are connected to the base.

[0021] Compared with the prior art, the beneficial effects of the optical platform for particle image velocimetry provided by the present utility model include: a support base is arranged above the base, a rotating member is connected to the support base and can rotate relative to the base, a driving member is connected to both the rotating member and the base and is used to drive the support base to rotate relative to the base around an axis in a first direction. An adjusting assembly is connected to both the support base and the PIV camera and is used to drive the PIV camera to translate relative to the base in the first, second, and third directions. Compared with the prior art, by arranging an adjusting assembly between the support base and the PIV camera, the adjusting assembly can be used to drive the PIV camera to translate relative to the base in the first, second, and third directions respectively, and at the same time, the driving member can be used to drive the rotating member, the support base, and the PIV camera to rotate relative to the base around an axis in the first direction, providing three translational degrees of freedom and one rotational degree of freedom for the PIV camera, meeting the usage requirements of degrees of freedom in multiple scenarios, and solving the technical problem in the prior art that since the PIV camera can only achieve two-dimensional movement after being installed on the optical platform and is not applicable to usage scenarios with more degrees of freedom of movement, resulting in inconvenient use. Description of the Drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of an optical platform for particle image velocimetry provided by an embodiment of the present utility model;

[0023] Figure 2 is a three-dimensional structural schematic diagram of another perspective of an optical platform for particle image velocimetry provided by an embodiment of the present utility model;

[0024] Figure 3 is a structural schematic diagram of an optical platform for particle image velocimetry provided by an embodiment of the present utility model;

[0025] Figure 4 is along Figure 3 the enlarged schematic diagram at A in

[0026] Description of the Reference Numerals in the Drawings:

[0027] Base 1;

[0028] Support Base 2;

[0029] Rotation Assembly 3;

[0030] Rotating Member 31;

[0031] Rotating Seat 311;

[0032] Rotating Shaft 312;

[0033] Driving Member 32;

[0034] Rotating Gear 321;

[0035] Drive gear 322;

[0036] Drive motor 323;

[0037] First transmission gear 324;

[0038] Second transmission gear 325;

[0039] Limiting member 33;

[0040] First limiting block 331;

[0041] Second limiting block 332;

[0042] Adjusting assembly 4;

[0043] Platform plate 41

[0044] First translating member 42;

[0045] Lifting member 43;

[0046] Second translating member 44;

[0047] Universal wheel 5;

[0048] Telescopic support platform 6. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be 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 utility model and are not used to limit the present utility model.

[0050] In order to solve the technical problem that the PIV camera can only achieve two-dimensional movement after being installed on the optical platform and is not suitable for use scenarios with more degrees of freedom of movement, resulting in inconvenient use, the present utility model provides an optical platform for particle image velocimetry, which can provide three translational degrees of freedom and one rotational degree of freedom for the PIV camera, meeting the use requirements of degrees of freedom in multiple scenarios.

[0051] It should be noted that the optical platform for particle image velocimetry described in the present utility model is used in but not limited to the fluid measurement technical field, etc. For the convenience of description, in the present utility model, only the case where the optical platform for particle image velocimetry is applied to the fluid measurement technical field is taken as an example for description, and the principle of the optical platform for particle image velocimetry applied to other types of equipment is substantially the same as that applied to the fluid measurement technical field, which will not be elaborated one by one here.

[0052] Please refer to Figures 1 to 4 , Figures 1 to 3The figure is a schematic structural diagram of an optical platform for particle image velocimetry in an embodiment of the present utility model. The optical platform for particle image velocimetry is used to connect a PIV camera and includes: a base 1, a support seat 2, a rotating assembly 3, and an adjusting assembly 4. The support seat 2 is arranged above the base 1. The rotating assembly 3 includes a rotating member 31 and a driving member 32. The rotating member 31 is connected to the support seat 2 and is rotatably connected to the base 1. The driving member 32 is connected to both the base 1 and the rotating member 31 and is used to drive the support seat 2 to rotate relative to the base 1 around an axis in the first direction. The adjusting assembly 4 is connected to both the support seat 2 and the PIV camera and is used to drive the PIV camera to translate relative to the base 1 in the first direction, the second direction, and the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0053] In this device, a support seat 2 is arranged above the base 1. The rotating member 31 is connected to the support seat 2 and can rotate relative to the base 1. The driving member 32 is connected to both the rotating member 31 and the base 1 and is used to drive the support seat 2 to rotate relative to the base 1 around an axis in the first direction. Among them, the adjusting assembly 4 is connected to both the support seat 2 and the PIV camera and is used to drive the PIV camera to translate relative to the base 1 in the first direction, the second direction, and the third direction.

[0054] Compared with the prior art, by arranging the adjusting assembly 4 between the support seat 2 and the PIV camera, the adjusting assembly 4 can be used to drive the PIV camera to translate relative to the base 1 in the first direction, the second direction, and the third direction respectively. At the same time, the driving member 32 can be used to drive the rotating member 31, the support seat 2, and the PIV camera to rotate relative to the base 1 around an axis in the first direction, providing three directions of translation and one direction of rotational freedom for the PIV camera, meeting the freedom usage requirements of multiple scenarios, and solving the technical problem in the prior art that the PIV camera can only achieve two-dimensional movement after being installed on the optical platform and is not suitable for usage scenarios with more degrees of freedom of movement, resulting in inconvenient use.

[0055] Specifically, in this device, the first direction, the second direction, and the third direction are respectively the Z-axis direction, the X-axis direction, and the Y-axis direction in a plane rectangular coordinate system, and any two of the Z-axis direction, the X-axis direction, and the Y-axis direction are perpendicular to each other.

[0056] Further, the PIV camera applies particle image velocimetry technology here, which is a conventional setting well-known to those skilled in the art and will not be elaborated too much here.

[0057] In this embodiment, the rotating member 31 includes a rotating seat 311 and a rotating shaft 312. The rotating seat 311 is connected to the base 1 and is provided with a rotating hole along the first direction. One end of the rotating shaft 312 is rotatably inserted into the rotating hole and the other end is connected to the support seat 2.

[0058] The rotating seat 311 is provided with a rotating hole, which provides support for the relative rotation of the support seat 2 and the rotating shaft 312 with respect to the base 1 and plays a connecting role.

[0059] Furthermore, in order to reduce the rotational friction between the outer wall of the rotating shaft 312 and the inner wall of the rotating hole, a rotating bearing can also be provided on the outer wall of the rotating shaft 312 here. The setting of the rotating bearing here is a conventional setting well-known to those skilled in the art and will not be elaborated further.

[0060] In this embodiment, as Figure 4 shown, the driving member 32 includes a rotating gear 321, a driving gear 322, a driving motor 323, a first transmission gear 324, and a second transmission gear 325.

[0061] Among them, the rotating gear 321 is fixedly sleeved on the rotating shaft 312, the driving gear 322 is rotatably connected to the base 1 and meshes with the rotating gear 321, and the fixed end of the driving motor 323 is connected to the base 1 and the output shaft is connected to the driving gear 322, for driving the rotating gear 321, the rotating shaft 312, and the rotating shaft 312 to rotate relative to the base 1.

[0062] By driving the driving gear 322 to mesh with the rotating gear 321 through the driving motor 323, the rotating shaft 312 and the support seat 2 can be rotated relative to the base 1 and the rotating seat 311.

[0063] Furthermore, the driving motor 323 here is a common and easily purchasable device in the market, which is a conventional setting well-known to those skilled in the art and will not be elaborated further.

[0064] In one of the embodiments, please refer to Figure 4 , the first transmission gear 324 can rotate relative to the base 1 and meshes with the rotating gear 321, and the pitch diameter of the first transmission gear 324 is smaller than the pitch diameter of the rotating gear 321. The second transmission gear 325 is coaxially arranged with the first transmission gear 324 and meshes with the driving gear 322, and the pitch diameter of the second transmission gear 325 is smaller than the pitch diameter of the rotating gear 321. The pitch diameter of the second transmission gear 325 is smaller than the pitch diameter of the first transmission gear 324.

[0065] By setting the transmission method with the pitch diameters increasing in sequence, the function of a speed reducer can be achieved.

[0066] Specifically, in this device, the first transmission gear 324 and the second transmission gear 325 are rotatably connected to the base 1 through bearings, and the first transmission gear 324 and the second transmission gear 325 are arranged at intervals and can respectively mesh with the rotating gear 321 and the driving gear 322.

[0067] In this embodiment, as Figure 4 shown, the rotating assembly 3 further includes a limiting member 33. The limiting member 33 includes at least one first limiting block 331 and at least one second limiting block 332. The first limiting block 331 is connected to either the rotating base 311 or the rotating gear 321, and the second limiting block 332 is disposed opposite to the first limiting block 331 and is connected to the other of the rotating base 311 or the rotating gear 321. The second limiting block 332 can abut against the first limiting block 331 to limit the further relative rotation of the rotating shaft 312 and the rotating gear 321 with respect to the base 1.

[0068] By providing the first limiting block 331 and the second limiting block 332 that can cooperate and abut against each other, the support base 2 cannot continue to rotate after rotating a certain angle relative to the base 1, which is used to meet the requirements of specific usage scenarios.

[0069] Furthermore, here the first limiting block 331 and the second limiting block 332 can be detachably connected respectively by means of threaded connection or elastic snap connection, which will not be elaborated here too much.

[0070] In one embodiment, please refer to Figure 3 、 Figure 4 , the numbers of the first limiting block 331 and the second limiting block 332 in the limiting member 33 are both two. The two first limiting blocks 331 are respectively disposed opposite to each other in the circumferential direction of the rotating base 311 and are both connected to the rotating base 311. The second limiting block 332 is arranged corresponding to the first limiting block 331 one by one. The two second limiting blocks 332 are both connected to the rotating gear 321 and can respectively abut against the first limiting block 331 to limit the rotation angle of the rotating gear 321 relative to the rotating base 311.

[0071] Specifically, in this device, the first limiting block 331 is connected to the rotating base 311, the second limiting block 332 is connected to the rotating gear 321, and the two first limiting blocks 331 are disposed opposite to each other in the circumferential direction of the rotating base 311.

[0072] In one embodiment, the rotating base 311 is provided with a plurality of first mounting holes along its circumferential direction. The first limiting block 331 is detachably connected to the first mounting holes. The rotating gear 321 is provided with second mounting holes opposite to the first mounting holes. The second limiting block 332 is detachably connected to the second mounting holes.

[0073] By providing the detachable structure of the first limiting block 331 and the second limiting block 332, it is convenient for the user to adjust the positions of the first limiting block 331 and the second limiting block 332 on the circumference, so as to change and adjust the maximum rotation angle of the support base 2.

[0074] In this embodiment, the adjusting assembly 4 includes at least one platform plate 41, a first translation member 42, a lifting member 43, and a second translation member 44. The platform plate 41 is disposed above the support base 2. The first translation member 42 is connected to the platform plate 41 and is configured to drive the platform plate 41 to translate relative to the base 1 in the second direction. The lifting member 43 is connected to the first translation member 42 and is configured to drive the platform plate 41 to translate relative to the base 1 in the first direction. The second translation member 44 is connected to the lifting member 43 and is configured to drive the platform plate 41 to translate relative to the base 1 in the third direction.

[0075] By providing the platform plate 41 for detachably mounting the PIV camera, and by providing the first translation member 42, the lifting member 43, and the second translation member 44, translational movement in three degrees of freedom of the PIV camera can be achieved.

[0076] Specifically, in this device, the first translation member 42 includes at least one first guide body and at least one first driving portion. The first guide body is disposed along the first direction. The platform plates 41 are provided in one-to-one correspondence with the first guide bodies and are slidably sleeved on the first guide bodies. The first driving portion is connected to both the first guide body and the platform plate 41 and is configured to drive the platform plate 41 to slide relative to the first guide body in the first direction. The first guide body is provided with a first receiving groove and a first sliding groove along the first direction. The first sliding groove is disposed on a side wall of the first guide body and is in communication with the first receiving groove. The first driving portion includes a first sliding block, a first screw rod, and a first hand rocker. One end of the first sliding block is slidably embedded in the first receiving groove, and the other end is connected to the platform plate 41. The first sliding block is provided with a first threaded hole. The rotation of the first screw rod is disposed in the first receiving groove and is threadedly connected to the first threaded hole. The first hand rocker is disposed outside the first receiving groove and is connected to the first screw rod and is configured to drive the first sliding block and the platform plate 41 to slide relative to the first guide body in the first direction.

[0077] Further, the lifting member 43 includes two columns, a first sliding body, a second driving portion, and a first connecting body. The two columns are arranged parallel to each other and spaced apart in the second direction, and are both connected to the base 1. The two ends of the first sliding body are respectively slidably connected to the two columns, and the first guiding body is connected to the first sliding body. The second driving portion is connected to both the column and the first sliding body, and is configured to drive the first sliding body, the first guiding body, and the platform plate 41 to slide relative to the column in the second direction. The column is provided with a second receiving groove in the second direction, and second sliding grooves are respectively provided on the opposite sides of the two columns. The second sliding grooves communicate with the second receiving groove. The second driving portion includes two second sliding blocks, a second screw rod, and a second hand crank. One end of the second sliding block is slidably embedded in the second receiving groove, and the other end is connected to the first sliding body. The second sliding block is provided with a second threaded hole. The rotation of the second screw rod is disposed in the second receiving groove and is threadedly connected to the second threaded hole. The second hand crank is disposed outside the second receiving groove and is connected to the second screw rod, and is configured to drive the second sliding block, the first sliding body, and the platform plate 41 to slide relative to the column in the second direction. The two ends of the first connecting body are respectively connected to the two columns. The number of platform plates 41 in the platform assembly is two. The two platform plates 41 are arranged spaced apart from each other, and are respectively slidably sleeved on the first guiding body, and the two first guiding bodies are both connected to the first sliding body.

[0078] Further, the second translation member 44 includes two guide rails, a second sliding body, and a third driving portion, and two second connecting bodies. The two guide rails are arranged parallel to each other and spaced apart in the third direction, and are both connected to the base 1. The second sliding body is provided with guiding grooves opposite to the guide rails. The second sliding body is slidably connected to the two guide rails through the two guiding grooves. The two columns are arranged spaced apart from each other and are respectively connected to the two ends of the second sliding body. The third driving portion is connected to the base 1 and the second sliding body, and is configured to drive the second sliding body, the first sliding body, and the platform plate 41 to slide relative to the base 1 in the third direction. The third driving portion includes a second guiding body, a third sliding block, a third screw rod, and a third hand crank. The second guiding body is disposed between the two guide rails in the third direction and is connected to the base 1. The second guiding body is provided with a third receiving groove and a third sliding groove in the third direction. The third sliding groove is disposed opposite to the second sliding body and communicates with the first receiving groove. One end of the third sliding block is slidably embedded in the third receiving groove, and the other end is connected to the second sliding body. The third sliding block is provided with a third threaded hole. The rotation of the third screw rod is disposed in the third receiving groove and is threadedly connected to the third threaded hole. The third hand crank is disposed outside the third receiving groove and is connected to the third screw rod, and is configured to drive the second sliding body, the first sliding body, and the platform plate 41 to slide relative to the base 1 in the third direction. The second connecting bodies are provided in one-to-one correspondence with the guide rails, and are disposed between the base 1 and the guide rails. The second connecting bodies are both connected to the base 1 and the guide rails. The number of platform assemblies is two. The two second sliding bodies are arranged spaced apart from each other and are both slidably sleeved on the guide rails.

[0079] In this embodiment, the device further includes four universal wheels 5 and four telescopic support platforms 6. The four universal wheels 5 are evenly distributed at the four right angles of the base 1 and are all connected to the bottom of the base 1.

[0080] The four universal wheels 5 are used to facilitate the movement of the entire device.

[0081] Furthermore, in the device, the universal wheels 5 can be freely moved by pushing, pulling or electrically driven, so as to facilitate the movement of the entire device. This is a conventional setting well known to those skilled in the art and will not be elaborated further here.

[0082] In one of the embodiments, please refer to Figures 1 to 3 , the telescopic support platforms 6 are arranged in one-to-one correspondence with the universal wheels 5. The telescopic support platforms 6 are arranged at intervals from the universal wheels 5 and are connected to the base 1.

[0083] The telescopic support platforms 6 can be used for fixing the position of the entire device after movement and play a supporting role. When the telescopic support platforms 6 are in the extended state, the bottom plane of the telescopic support platforms 6 is higher than the bottom plane of the universal wheels 5, and the position of the entire device is fixed. When the telescopic support platforms 6 are in the retracted state, the bottom plane of the telescopic support platforms 6 is lower than the bottom plane of the universal wheels 5, and the entire device can be moved by the universal wheels 5.

[0084] Furthermore, the telescopic support platforms 6 are common and easy-to-purchase devices on the market, such as jacks. This is a conventional setting well known to those skilled in the art and will not be elaborated further here.

[0085] For a better understanding of the present utility model, the technical solutions of the present utility model will be described in detail below in conjunction with Figures 1 to 4 :

[0086] A support seat 2 is arranged above the base 1. A rotating member 31 is connected to the support seat 2 and can rotate relative to the base 1. A driving member 32 is connected to both the rotating member 31 and the base 1 and is used to drive the support seat 2 to rotate relative to the base 1 around an axis in the first direction. Among them, the adjusting assembly 4 is connected to both the support seat 2 and the PIV camera and is used to drive the PIV camera to translate relative to the base 1 in the first direction, the second direction and the third direction. Compared with the prior art, by arranging the adjusting assembly 4 between the support seat 2 and the PIV camera, the adjusting assembly 4 can be used to drive the PIV camera to translate relative to the base 1 in the first direction, the second direction and the third direction respectively. At the same time, the driving member 32 can be used to drive the rotating member 31, the support seat 2 and the PIV camera to rotate relative to the base 1 around an axis in the first direction, so as to provide three translational degrees of freedom and one rotational degree of freedom for the PIV camera, meeting the freedom usage requirements in multiple scenarios.

[0087] The specific working process of the present utility model is as follows. When in use, the user first installs or fixes the PIV camera on the platform plate 41. Then, the user can manually drive the first hand rocker, the second hand rocker, and the third hand rocker respectively, so as to drive the PIV camera and the platform plate 41 to translate within the plane rectangular coordinate system. Then, the user can also drive the support base 2, the platform plate 41, and the PIV camera to rotate around the Z-axis in the plane rectangular coordinate system by driving the driving motor 323. Finally, when the first limit block 331 abuts against the second limit block 332 after rotation, the driving motor 323 cannot drive the support base 2, the platform plate 41, and the PIV camera to rotate relative to the base 1.

[0088] Through the above structure, the device can solve the technical problem in the prior art that the PIV camera can only achieve two-dimensional movement after being installed on the optical platform and is not suitable for use scenarios with more degrees of freedom of movement, resulting in inconvenient use.

[0089] The specific implementation manners of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. An optical platform for particle image velocimetry, used to connect a PIV camera, characterized in that: include: Base; A support seat, arranged above the base; A rotating assembly, comprising a rotating member and a driving member, wherein the rotating member is connected to the support seat and is rotatably connected to the base, and the driving member is connected to both the base and the rotating member, and is used to drive the support seat to rotate relative to the base around a first direction as an axis; as well as The adjustment component is connected to the support base and the PIV camera, and is used to drive the PIV camera to translate relative to the base along a first direction, a second direction and a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The optical platform for particle image velocimetry according to claim 1, characterized in that: The rotating member comprises a rotating seat and a rotating shaft. The rotating seat is connected to the base and is provided with a rotating hole along a first direction. One end of the rotating shaft is rotatably inserted in the rotating hole and the other end is connected to the supporting seat.

3. The optical platform for particle image velocimetry according to claim 2, characterized in that: The driving member includes a rotating gear, a driving gear and a driving motor. The rotating gear is fixedly sleeved on the rotating shaft. The driving gear is rotatably connected to the base and meshes with the rotating gear. The fixed end of the driving motor is connected to the base, and the output shaft is connected to the driving gear, which is used to drive the rotating gear, the rotating shaft and the rotating shaft to rotate relative to the base.

4. The optical platform for particle image velocimetry according to claim 3, characterized in that: The driving member also includes a first transmission gear and a second transmission gear. The first transmission gear can rotate relative to the base and mesh with the rotating gear, and the diameter of the pitch circle of the first transmission gear is smaller than the diameter of the pitch circle of the rotating gear. The second transmission gear is coaxially arranged with the first transmission gear and meshes with the driving gear, and the diameter of the pitch circle of the second transmission gear is smaller than the diameter of the pitch circle of the rotating gear. The diameter of the pitch circle of the second transmission gear is smaller than the diameter of the pitch circle of the first transmission gear.

5. The optical platform for particle image velocimetry according to claim 4, characterized in that: The rotating assembly also includes a limit member, which includes at least one first limit block and at least one second limit block, the first limit block is connected to either the rotating seat or the rotating gear, the second limit block is arranged relative to the first limit block and is connected to the other of the rotating seat or the rotating gear, the second limit block can abut against the first limit block to limit the rotating shaft and the rotating gear from continuing to rotate relative to the base.

6. The optical platform for particle image velocimetry according to claim 5, characterized in that: The number of the first limit block and the second limit block in the limit member are respectively two, the two first limit blocks are respectively arranged in the circumferential direction of the rotating seat and are both connected to the rotating seat, the second limit block is arranged in a one-to-one correspondence with the first limit block, the two second limit blocks are both connected to the rotating gear, and can respectively abut against the first limit block to limit the rotation angle of the rotating gear relative to the rotating seat.

7. The optical platform for particle image velocimetry according to claim 6, characterized in that: The rotating seat is provided with a plurality of first mounting holes along its circumferential direction, the first limiting block is detachably connected to the first mounting hole, the rotating gear is provided with a second mounting hole opposite to the first mounting hole, and the second limiting block is detachably connected to the second mounting hole.

8. The optical platform for particle image velocimetry according to claim 7, characterized in that: The adjustment assembly includes at least one platform plate, a first translation member, a lifting member and a second translation member. The platform plate is arranged above the support seat. The first translation member is connected to the platform plate and is used to drive the platform plate to translate relative to the base along the second direction. The lifting member is connected to the first translation member and is used to drive the platform plate to translate relative to the base along the first direction. The second translation member is connected to the lifting member and is used to drive the platform plate to translate relative to the base along the third direction.

9. The optical platform for particle image velocimetry according to claim 8, characterized in that: It also includes four universal wheels, which are evenly distributed at four right angles of the base and are all connected to the bottom of the base.

10. The optical platform for particle image velocimetry according to claim 9, characterized in that: It also includes four telescopic support platforms, which are arranged one by one corresponding to the universal wheels. The telescopic support platforms are arranged at intervals from the universal wheels and are connected to the base.

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