Three-dimensional optical platform for particle image velocity measurement

Abstract

The utility model discloses a structure diagram of a three-dimensional optical platform for particle image velocity measurement, the three-dimensional optical platform for particle image velocity measurement comprises a bottom plate and at least one platform assembly, the platform assembly comprises a platform plate, a first translation member, a lifting member and a second translation member, the first translation member is connected to the platform plate, and the lifting member is connected to the platform plate. The first translation part is used for driving the platform plate to translate relative to the bottom plate in the first direction, the lifting part is connected to the first translation part and used for driving the platform plate to translate relative to the bottom plate in the second direction, the second translation part is connected to the lifting part and used for driving the platform plate to translate relative to the bottom plate in the third direction, and the first direction, the second direction and the third direction are perpendicular to one another in pairs. The utility model can effectively solve the problem that the device in the prior art can only drive the camera to move in two degrees of freedom and cannot meet the use requirement of three-dimensional movement.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy measurement, in particular to a three-dimensional optical platform for particle image velocity measurement. Background Art

[0002] Particle Image Velocimetry (PIV) technology has great advantages in studying the pulsation characteristics and coherent structures of turbulent flow, and is used in the field of water conservancy measurement.

[0003] For example, the Chinese invention patent with application number: CN 201610004948.3, is named: A mobile positioning device for particle image velocimetry, including a support frame, a lifting system, a mobile positioning platform, a laser mounting port, and a camera mounting platform; wherein the lifting system is installed on the support frame and can move in the vertical direction; the mobile positioning platform is installed on the lifting system, moves vertically with the lifting system, and can move horizontally along the length direction; a hollow area is set 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 with the mobile positioning platform to realize a dual-degree-of-freedom mobile positioning function. However, this device is only suitable for two-dimensional conditions of the longitudinal and vertical planes, and cannot meet the needs of three-dimensional use.

[0004] Therefore, there is an urgent need for a three-dimensional optical platform for particle image velocimetry to solve the problem that the existing technology devices can only drive the camera to move in two degrees of freedom and cannot meet the use requirements of three-dimensional movement. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a three-dimensional optical platform for particle image velocimetry to solve the technical problem that the prior art device can only drive the camera to move in two degrees of freedom and cannot meet the use requirements of three-dimensional movement.

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

[0007] In a first aspect, the utility model provides a three-dimensional optical platform for particle image velocimetry, comprising:

[0008] Base plate; and

[0009] At least one platform component, the platform component includes a platform plate, a first translation member, a lifting member and a second translation member, the first translation member is connected to the platform plate, and is used to drive the platform plate to translate relative to the base plate along a first 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 plate along a second 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 plate along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In some embodiments, the first translation member includes at least one first guide body and at least one first driving unit, the first guide body is arranged along a first direction, the platform plate is arranged in a one-to-one correspondence with the first guide body, and is slidably mounted on the first guide body, and the first driving unit is connected to both the first guide body and the platform plate, and is used to drive the platform plate to slide relative to the first guide body along the first direction.

[0011] In some embodiments, the first guide body is provided with a first receiving groove and a first sliding groove along a first direction, the first sliding groove is arranged on a side wall of the first guide body and is connected to the first receiving groove, the first driving part includes a first sliding block, a first screw rod and a first hand crank, 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, the first sliding block is provided with a first threaded hole, the rotation of the first screw rod is built into the first receiving groove and is threadedly connected to the first threaded hole, the first hand crank is placed outside the first receiving groove and is connected to the first screw, for driving the first sliding block and the platform plate to slide relative to the first guide body along the first direction.

[0012] In some embodiments, the lifting member includes two columns, a first sliding body and a second driving part. The two columns are parallel to each other and arranged at intervals along the second direction, and are both connected to the base plate. The two ends of the first sliding body are respectively slidably connected to the two columns, and the first guide body is connected to the first sliding body. The second driving part is connected to the columns and the first sliding body, and is used to drive the first sliding body, the first guide body and the platform plate to slide relative to the columns along the second direction.

[0013] In some embodiments, the column is provided with a second receiving groove along the second direction, and second slide grooves are respectively provided on opposite sides of the two columns, the second slide grooves are connected to the second receiving grooves, the second driving part 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 built into the second receiving groove and is threadedly connected to the second threaded hole, the second hand crank is externally disposed in the second receiving groove and is connected to the second screw rod, for driving the second sliding block, the first sliding body and the platform plate to slide relative to the column along the second direction.

[0014] In some embodiments, the lifting member also includes a first connecting body, both ends of which are respectively connected to the two columns, the number of platform plates in the platform assembly is two, the two platform plates are spaced apart from each other, and are respectively slidably mounted on the first guide body, and the two first guide bodies are connected to the first sliding body.

[0015] In some embodiments, the second translation member includes two guide rails, a second sliding body and a third driving unit. The two guide rails are parallel to each other and spaced apart along the third direction and are both connected to the base plate. The second sliding body is provided with guide grooves relative to the guide rails. The second sliding body is slidably connected to the two guide rails via the two guide grooves. The two columns are spaced apart from each other and are respectively connected to the two ends of the second sliding body. The third driving unit is connected to the base plate and the second sliding body, and is used to drive the second sliding body, the first sliding body and the platform plate to slide relative to the base plate along the third direction.

[0016] In some embodiments, the third driving part includes a second guide body, a third sliding block, a third screw and a third hand crank. The second guide body is arranged between the two guide rails along the third direction and is connected to the base plate. The second guide body is provided with a third accommodating groove and a third slide groove along the third direction. The third slide groove is arranged relative to the second sliding body and is connected to the first accommodating groove. One end of the third sliding block is slidably embedded in the third accommodating 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 is built into the third accommodating groove and is threadedly connected to the third threaded hole. The third hand crank is externally disposed in the third accommodating groove and is connected to the third screw, which is used to drive the second sliding body, the first sliding body and the platform plate to slide relative to the base plate along the third direction.

[0017] In some embodiments, the second translation member also includes two second connecting bodies, which are arranged in one-to-one correspondence with the guide rails and are arranged between the base plate and the guide rails. The second connecting bodies are connected to both the base plate and the guide rails. The number of the platform assemblies is two, and the two second sliding bodies are arranged at intervals from each other and are both slidably mounted on the guide rails.

[0018] In some embodiments, the three-dimensional optical platform for particle image velocimetry also includes four universal wheels and four telescopic support platforms. The four universal wheels are evenly distributed at four right angles of the base plate and are all connected to the bottom of the base plate. The telescopic support platform is arranged in a one-to-one correspondence with the universal wheels. The telescopic support platform is spaced apart from the universal wheels and connected to the bottom of the base plate.

[0019] Compared with the prior art, the beneficial effects of the three-dimensional optical platform for particle image velocimetry provided by the utility model include: at least one platform plate is arranged on the bottom plate, wherein the platform plate is connected to the bottom plate through a first translation member, a lifting member and a second translation member, the first translation member is used to drive the platform plate to translate relative to the bottom plate along a first direction, the lifting member is used to drive the platform plate to translate relative to the bottom plate along a second direction, and the second translation member is used to drive the platform plate to translate relative to the bottom plate along a third direction, wherein any two of the first direction, the second direction and the third direction are perpendicular to each other. Compared with the prior art, the platform plate is slidably arranged on the bottom plate by arranging the first translation member, the lifting member and the second translation member, so that the platform plate can translate relative to the bottom plate along the first direction, the second direction and the third direction respectively, that is, the platform plate can drive the camera to slide relative to the bottom plate respectively along the X-axis, the Y-axis and the Z-axis of the plane rectangular coordinate system, and can realize three-degree-of-freedom movement, which can solve the technical problem that the prior art device can only drive the camera to move in two degrees of freedom and cannot meet the use requirements of three-dimensional movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a three-dimensional optical platform for particle image velocimetry provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of a three-dimensional optical platform for particle image velocimetry provided by an embodiment of the utility model from another perspective;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of a three-dimensional optical platform for particle image velocimetry provided by an embodiment of the utility model from another viewing angle.

[0023] Description of reference numerals:

[0024] Bottom plate 1;

[0025] Platform component 2;

[0026] Platform plate 21;

[0027] A first translation member 22;

[0028] A first guide body 221;

[0029] A first driving unit 222;

[0030] First screw 2221;

[0031] First hand rocker 2222;

[0032] Lifting member 23;

[0033] Column 231;

[0034] A first sliding body 232;

[0035] A second driving unit 233;

[0036] Second screw 2331;

[0037] Second hand rocker 2332;

[0038] A first connector 234;

[0039] A second translation member 24;

[0040] Guide rail 241;

[0041] A second sliding body 242;

[0042] A third driving unit 243;

[0043] A second guide body 2431;

[0044] The third screw 2432;

[0045] Third hand rocker 2433;

[0046] A second connector 244;

[0047] Universal wheel 3;

[0048] Telescopic support platform 4. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0050] In order to solve the technical problem that the prior art devices can only drive the camera to move in two degrees of freedom and cannot meet the use requirements of three-dimensional movement, the utility model provides a three-dimensional optical platform for particle image velocimetry, which can realize that the platform plate 21 drives the camera to slide relative to the base plate 1 on the X-axis, Y-axis and Z-axis of the plane rectangular coordinate system, that is, it can realize three-degree-of-freedom movement.

[0051] It should be noted that the three-dimensional optical platform for particle image velocimetry of the utility model is used for but not limited to the field of water conservancy measurement technology, etc. For the convenience of explanation, in the utility model, only the application of a three-dimensional optical platform for particle image velocimetry in the field of water conservancy measurement technology is used as an example for explanation, and the principle of applying a three-dimensional optical platform for particle image velocimetry in other types of equipment is essentially the same as the principle applied to the field of water conservancy measurement technology, which will not be elaborated here.

[0052] See also Figures 1 to 3 , is a schematic structural diagram of a three-dimensional optical platform for particle image velocimetry in an embodiment of the utility model, a three-dimensional optical platform for particle image velocimetry includes a base plate 1 and at least one platform component 2, the platform component 2 includes a platform plate 21, a first translation member 22, a lifting member 23 and a second translation member 24, the first translation member 22 is connected to the platform plate 21, and is used to drive the platform plate 21 to translate relative to the base plate 1 along a first direction, the lifting member 23 is connected to the first translation member, and is used to drive the platform plate 21 to translate relative to the base plate 1 along a second direction, the second translation member 24 is connected to the lifting member 23, and is used to drive the platform plate 21 to translate relative to the base plate 1 along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0053] In the present device, at least one platform plate 21 is arranged on the base plate 1, wherein the platform plate 21 is connected to the base plate 1 through a first translation member 22, a lifting member 23 and a second translation member 24, the first translation member 22 is used to drive the platform plate 21 to translate relative to the base plate 1 along a first direction, the lifting member 23 is used to drive the platform plate 21 to translate relative to the base plate 1 along a second direction, and the second translation member 24 is used to drive the platform plate 21 to translate relative to the base plate 1 along a third direction, wherein any two of the first direction, the second direction and the third direction are perpendicular to each other.

[0054] Compared with the prior art, the platform plate 21 is slidably arranged on the base plate 1 by setting a first translation member 22, a lifting member 23 and a second translation member 24, so that the platform plate 21 can translate relative to the base plate 1 along the first direction, the second direction and the third direction respectively, that is, the platform plate 21 can drive the camera to slide relative to the base plate 1 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, which can solve the technical problem that the prior art device can only drive the camera to move in two degrees of freedom and cannot meet the use requirements of three-dimensional movement.

[0055] Specifically, in the present application, the first direction is the Y axis of the plane rectangular coordinate system, the second direction is the Z axis of the plane rectangular coordinate system, and the third direction is the X axis of the plane rectangular coordinate system.

[0056] Furthermore, in the present device, a threaded hole (not shown in the figure) for fixing the camera is also provided on the platform plate 21, and the user can detachably install the camera on the platform plate through the threaded hole on the platform plate 21. The detachable connection structure formed by the threaded connection here is a conventional setting well known to those skilled in the art and will not be elaborated here.

[0057] In this embodiment, Figures 1 to 3 As shown, the first translation member 22 includes at least one first guide body 221 and at least one first driving part 222. The first guide body 221 is arranged along the first direction. The platform plate 21 is arranged one by one with the first guide body 221 and is slidably mounted on the first guide body 221. The first driving part is connected to both the first guide body 221 and the platform plate 21, and is used to drive the platform plate 21 to slide relative to the first guide body 221 along the first direction.

[0058] By driving the platform plate 21 to slide relative to the first guide body 221 through the first driving part 222, the platform plate 21 and the camera can be translated relative to the bottom plate 1 along the first direction, that is, free movement along the Y axis.

[0059] In one embodiment, see Figures 1 to 3 The first guide body 221 is provided with a first receiving groove and a first sliding groove along the first direction. The first sliding groove is arranged on a side wall of the first guide body 221 and is connected to the first receiving groove. The first driving part 222 includes a first sliding block, a first screw rod 2221 and a first hand crank 2222. 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 21. The first sliding block is provided with a first threaded hole. The rotation of the first screw rod 2221 is built into the first receiving groove and is threadedly connected to the first threaded hole. The first hand crank 2222 is externally disposed in the first receiving groove and is connected to the first screw rod 2221, which is used to drive the first sliding block and the platform plate 21 to slide relative to the first guide body 221 along the first direction.

[0060] By using a driving structure similar to a ball screw nut pair composed of the first screw 2221 and the first sliding block, the first screw 2221 can be driven to rotate around its own axis by driving the hand crank. After rotation, the first screw 2221 engages with the first threaded hole on the first sliding block, and can realize the reciprocating sliding of the first sliding block and the platform plate 21 relative to the first guide body 221 along the first direction.

[0061] Furthermore, the platform plate 21 in the present device is in an inverted "L" shape and has a first flat plate and a second vertical plate, the second vertical plate is connected to the first sliding block, and the first flat plate is used to install and place the camera, which will not be described in detail here.

[0062] In this embodiment, Figures 1 to 3 As shown, the lifting member 23 includes two columns 231 , a first sliding body 232 , a second driving part 233 , and a first connecting body 234 .

[0063] Among them, the two columns 231 are parallel to each other and arranged at intervals along the second direction, and are both connected to the base plate 1. The two ends of the first sliding body 232 are respectively slidably connected to the two columns 231, and the first guide body 221 is connected to the first sliding body 232. The second driving part 233 is connected to the columns 231 and the first sliding body 232, and is used to drive the first sliding body 232, the first guide body 221 and the platform plate 21 to slide relative to the columns 231 along the second direction.

[0064] Driven by the second driving part 233 , the first sliding body 232 connected to the first guide body 221 can slide relative to the column 231 along the second direction, so that the first sliding body 232 , the first guide body 221 and the platform plate 21 can be lifted and lowered relative to the column 231 along the second direction.

[0065] In one embodiment, see Figures 1 to 3 The column 231 is provided with a second receiving groove along the second direction, and the opposite sides of the two columns 231 are respectively provided with second sliding grooves, the second sliding grooves are connected to the second receiving grooves, the second driving part 233 includes two second sliding blocks, a second screw rod 2331 and a second hand crank 2332, 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 232, the second sliding block is provided with a second threaded hole, the rotation of the second screw rod 2331 is built into the second receiving groove and is threadedly connected to the second threaded hole, the second hand crank 2332 is externally arranged in the second receiving groove and is connected to the second screw rod 2331, and is used to drive the second sliding block, the first sliding body 232 and the platform plate 21 to slide relative to the column 231 along the second direction.

[0066] Through the driving structure similar to the ball screw nut pair composed of the second screw 2331 and the second sliding block, the second screw 2331 can be driven to rotate around its own axis by driving the hand crank. The rotated second screw 2331 engages with the second threaded hole on the second sliding block, and can realize the lifting and lowering of the second sliding block, the first sliding body 232 and the platform plate 21 relative to the column 231 along the second direction.

[0067] In another embodiment, see Figures 1 to 3The two ends of the first connecting body 234 are respectively connected to the two columns 231. There are two platform plates 21 in the platform assembly 2. The two platform plates 21 are arranged at an interval from each other and are respectively slidably mounted on the first guide body 221, and the two first guide bodies 221 are connected to the first sliding body 232.

[0068] The first connecting body 234 supports and connects the two columns 231 , thereby improving the overall stability of the device.

[0069] Furthermore, in the present device, the two platform plates 21 are spaced apart from each other and are respectively slidably mounted on the first guide body 221 . The two first guide bodies 221 are both connected to the first connecting body 234 , that is, by adjusting the second hand crank 2332 , the two platform plates 21 can be driven to rise and fall relative to the base plate 1 at the same time.

[0070] In this embodiment, Figures 1 to 3 As shown, the second translation member 24 includes two guide rails 241 , a second sliding body 242 , a third driving portion 243 , and two second connecting bodies 244 .

[0071] Among them, the two guide rails 241 are parallel to each other and arranged at intervals along the third direction, and are both connected to the base plate 1. The second sliding body 242 is provided with a guide groove relative to the guide rail 241. The second sliding body 242 is slidably connected to the two guide rails 241 through the two guide grooves. The two columns 231 are arranged at intervals and are respectively connected to the two ends of the second sliding body 242. The third driving part 243 is connected to the base plate 1 and the second sliding body 242, and is used to drive the second sliding body 242, the first sliding body 232 and the platform plate 21 to slide relative to the base plate 1 along the third direction.

[0072] Driven by the third driving part 243, the second sliding body 242 connected to the first sliding body 232 and the platform plate 21 can slide relative to the base plate 1 along the third direction, thereby realizing the sliding of the second sliding body 242, the first sliding body 232 and the platform plate 21 relative to the base plate 1 along the third direction.

[0073] In one embodiment, see Figures 1 to 3The third driving part 243 includes a second guide body 2431, a third sliding block, a third screw rod 2432 and a third hand crank 2433. The second guide body 2431 is arranged between the two guide rails 241 along the third direction and is connected to the base plate 1. The second guide body 2431 is provided with a third accommodating groove and a third slide groove along the third direction. The third slide groove is arranged relative to the second sliding body 242 and is connected to the first accommodating groove. One end of the third sliding block is slidably embedded in the third accommodating groove and the other end is connected to the second sliding body 242. The third sliding block is provided with a third threaded hole. The rotation of the third screw rod 2432 is built into the third accommodating groove and is threadedly connected to the third threaded hole. The third hand crank 2433 is externally arranged in the third accommodating groove and is connected to the third screw rod 2432, which is used to drive the second sliding body 242, the first sliding body 232 and the platform plate 21 to slide relative to the base plate 1 along the third direction.

[0074] By using a driving structure similar to a ball screw nut pair composed of a third screw 2432 and a third sliding block, the third screw 2432 can be driven to rotate around its own axis by driving the hand crank. The rotated third screw 2432 engages with the third threaded hole on the third sliding block, and can realize the sliding of the second sliding body 242, the first sliding body 232 and the platform plate 21 relative to the base plate 1 along the third direction.

[0075] Furthermore, in the present device, the first screw rod 2221, the second screw rod 2331 and the third screw rod 2432 are all provided with scales, which can reflect the relative sliding dimensions of the first sliding block, the second sliding block and the third sliding block, and will not be elaborated here.

[0076] In another embodiment, see Figures 1 to 3 The second connecting body 244 is arranged in one-to-one correspondence with the guide rail 241, and is arranged between the base plate 1 and the guide rail 241. The second connecting body 244 is connected to both the base plate 1 and the guide rail 241. The number of platform components 2 is two, and the two second sliding bodies 242 are arranged at intervals from each other and are both slidably mounted on the guide rail 241.

[0077] The second connector 244 is provided to increase the stability of the entire device.

[0078] Furthermore, in the present device, the four platform plates 21 are divided into two groups, and the two groups of platform plates 21 are respectively slidably connected with the bottom plate 1 via two second sliding bodies 242, so that the four cameras can each have three free movements.

[0079] In this embodiment, Figure 1As shown, the device also includes four universal wheels 3 and four telescopic support platforms 4. The four universal wheels 3 are evenly arranged at four right angles with the base plate 1 and are all connected to the bottom of the base plate 1. The telescopic support platforms 4 are arranged one by one with the universal wheels 3. The telescopic support platforms 4 are arranged at intervals from the universal wheels 3 and are connected to the bottom of the base plate 1.

[0080] By setting four universal wheels 3, the base plate 1 and the platform plate 21 can be supported to move conveniently on the ground, wherein the universal wheels 3 are common and easy to purchase equipment on the market, which belongs to the conventional settings well known to technicians in this field and will not be described in detail.

[0081] Furthermore, the telescopic support platform 4 is a hydraulic jack that is common and easy to purchase on the market. By controlling the extension of the extension end of the hydraulic jack, the base plate 1 and the entire device can be lifted, so that the universal wheel 3 is separated from the ground, thereby facilitating the fixing or movement of the position of the device.

[0082] In order to better understand the present invention, the technical solution of the present invention is described in detail below with reference to the figures: at least one platform plate 21 is arranged on the base plate 1, wherein the platform plate 21 is connected to the base plate 1 through a first translation member 22, a lifting member 23 and a second translation member 24, the first translation member 22 is used to drive the platform plate 21 to translate relative to the base plate 1 along a first direction, the lifting member 23 is used to drive the platform plate 21 to translate relative to the base plate 1 along a second direction, and the second translation member 24 is used to drive the platform plate 21 to translate relative to the base plate 1 along a third direction, wherein any two of the first direction, the second direction and the third direction are perpendicular to each other. Compared with the prior art, by arranging the first translation member 22, the lifting member 23 and the second translation member 24, the platform plate 21 is slidably arranged on the base plate 1, so that the platform plate 21 can translate relative to the base plate 1 along the first direction, the second direction and the third direction respectively, that is, the platform plate 21 can drive the camera to slide relative to the base plate 1 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.

[0083] The specific working process of the utility model is that when in use, the camera to be used is first installed on the platform plate 21, and then the first hand joystick 2222, the second hand joystick 2332 and the third hand joystick 2433 can be rotated forward or reversely as needed. Then, during the rotation process, the first guide body 221 can slide along the first direction relative to the base plate 1, so that the platform plate 21 and the camera can be adjusted relative to the base plate 1 in the Y-axis direction, the first sliding body 232 can slide along the second direction relative to the base plate 1, so that the platform plate 21 and the camera can be adjusted relative to the base plate 1 in the Z-axis direction, and the second sliding body 242 can slide along the third direction relative to the base plate 1, so that the platform plate 21 and the camera can be adjusted relative to the base plate 1 in the X-axis direction.

[0084] Through the above structure, the device can solve the technical problem that the prior art device can only drive the camera to move with two degrees of freedom and cannot meet the use requirements of three-dimensional movement.

[0085] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A three-dimensional optical platform for particle image velocimetry, characterized in that: include: Base plate; as well as At least one platform component, the platform component includes a platform plate, a first translation member, a lifting member and a second translation member, the first translation member is connected to the platform plate, and is used to drive the platform plate to translate relative to the base plate along a first 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 plate along a second 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 plate along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The three-dimensional optical platform for particle image velocimetry according to claim 1, characterized in that: The first translation member includes at least one first guide body and at least one first driving part, the first guide body is arranged along a first direction, the platform plate is arranged in a one-to-one correspondence with the first guide body, and is slidably mounted on the first guide body, and the first driving part is connected to both the first guide body and the platform plate, and is used to drive the platform plate to slide relative to the first guide body along the first direction.

3. The three-dimensional optical platform for particle image velocimetry according to claim 2, characterized in that: The first guide body is provided with a first receiving groove and a first sliding groove along a first direction, the first sliding groove is arranged on a side wall of the first guide body and is connected with the first receiving groove, the first driving part includes a first sliding block, a first screw rod and a first hand crank, one end of the first sliding block is slidably embedded in the first receiving groove, and the other end is connected with the platform plate, the first sliding block is provided with a first threaded hole, the rotation of the first screw rod is built into the first receiving groove and is threadedly connected with the first threaded hole, the first hand crank is externally disposed in the first receiving groove and is connected to the first screw rod, for driving the first sliding block and the platform plate to slide relative to the first guide body along the first direction.

4. The three-dimensional optical platform for particle image velocimetry according to claim 3, characterized in that: The lifting member includes two columns, a first sliding body and a second driving part. The two columns are parallel to each other and arranged at intervals along the second direction, and are both connected to the base plate. The two ends of the first sliding body are respectively slidably connected to the two columns, and the first guide body is connected to the first sliding body. The second driving part is connected to the columns and the first sliding body, and is used to drive the first sliding body, the first guide body and the platform plate to slide relative to the columns along the second direction.

5. The three-dimensional optical platform for particle image velocimetry according to claim 4, characterized in that: The column is provided with a second receiving groove along the second direction, and second slide grooves are respectively provided on opposite sides of the two columns, the second slide grooves are communicated with the second receiving groove, the second driving part 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 built into the second receiving groove and is threadedly connected to the second threaded hole, the second hand crank is externally disposed in the second receiving groove and is connected to the second screw rod, for driving the second sliding block, the first sliding body and the platform plate to slide relative to the column along the second direction.

6. The three-dimensional optical platform for particle image velocimetry according to claim 5, characterized in that: The lifting member also includes a first connector, both ends of which are connected to the two columns respectively. There are two platform plates in the platform assembly, and the two platform plates are spaced apart from each other and are respectively slidably mounted on the first guide body, and the two first guide bodies are connected to the first sliding body.

7. The three-dimensional optical platform for particle image velocimetry according to claim 6, characterized in that: The second translation member includes two guide rails, a second sliding body and a third driving part. The two guide rails are parallel to each other and spaced apart along the third direction and are both connected to the base plate. The second sliding body is provided with guide grooves relative to the guide rails. The second sliding body is slidably connected to the two guide rails via the two guide grooves. The two columns are spaced apart from each other and are respectively connected to the two ends of the second sliding body. The third driving part is connected to the base plate and the second sliding body, and is used for driving the second sliding body, the first sliding body and the platform plate to slide along the third direction relative to the base plate.

8. The three-dimensional optical platform for particle image velocimetry according to claim 7, characterized in that: The third driving part includes a second guide body, a third sliding block, a third screw and a third hand crank, the second guide body is arranged between the two guide rails along the third direction and is connected to the base plate, the second guide body is provided with a third accommodating groove and a third sliding groove along the third direction, the third sliding groove is arranged relative to the second sliding body and is connected to the first accommodating groove, one end of the third sliding block is slidably embedded in the third accommodating 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 is built in the third accommodating groove, and is threadedly connected to the third threaded hole, the third hand crank is externally arranged in the third accommodating groove, and is connected to the third screw, for driving the second sliding body, the first sliding body and the platform plate to slide relative to the base plate along the third direction.

9. The three-dimensional optical platform for particle image velocimetry according to claim 8, characterized in that: The second translation member also includes two second connecting bodies, which are arranged in one-to-one correspondence with the guide rails and are arranged between the base plate and the guide rails. The second connecting bodies are connected to both the base plate and the guide rails. The number of the platform assemblies is two, and the two second sliding bodies are arranged at intervals from each other and are both slidably mounted on the guide rails.

10. The three-dimensional optical platform for particle image velocimetry according to claim 9, characterized in that: It also includes four universal wheels and four telescopic support platforms. The four universal wheels are evenly distributed at four right angles of the base plate and are all connected to the bottom of the base plate. The telescopic support platform is arranged one-to-one with the universal wheels. The telescopic support platform is arranged at an interval with the universal wheels and is connected to the bottom of the base plate.

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