A high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform

Abstract

This invention proposes a high-precision, multi-degree-of-freedom piezoelectric active vibration isolation platform, belonging to the field of piezoelectric platforms. The platform includes a base, a vibration isolation mechanism, a locking mechanism, a cooling mechanism, and a compression mechanism. The vibration isolation mechanism, mounted on the base, is used to dampen vibrations. A locking mechanism for locking the measuring instrument is provided on the vibration isolation mechanism. A cooling mechanism is located inside the vibration isolation mechanism to cool it. A compression mechanism is located below the vibration isolation mechanism, which expands and retracts with the movement of the vibration isolation mechanism. When the vibration isolation mechanism is in operation, the compression mechanism compresses the cooling mechanism to cool it. The vibration isolation mechanism, while mitigating the impact of the measuring instrument, can generate electrical energy in conjunction with the piezoelectric material. The cooling mechanism effectively cools the vibration isolation mechanism, which generates heat during prolonged vertical movement, requiring cooling to reduce its temperature.

Description

Technical Field

[0001] This invention relates to the field of piezoelectric platforms, specifically a high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform. Background Technology

[0002] When modeling external landscape features, a surveying instrument is needed to scan the landscape first. Currently, this is mainly done by mounting the surveying instrument on a mountain bike for on-site measurement. The surveying instrument rotates and scans while the vehicle is moving, and finally, the scanned image is transmitted to a computer to complete the on-site measurement. However, the surveying instrument shakes as the mountain bike moves, resulting in poor image quality and affecting the on-site landscape modeling effect. Furthermore, the significant shaking during vehicle movement can shorten the lifespan of the surveying instrument. Summary of the Invention

[0003] The measuring instrument generates energy impact during shaking, so it is necessary to reduce the impact effect of the measuring instrument and convert the energy into electrical energy. This energy is then utilized by generating voltage through the impact of piezoelectric materials. The platform also generates heat during vibration, which needs to be dissipated to extend the platform's service life.

[0004] To address the aforementioned problems, this invention proposes a high-precision, multi-degree-of-freedom piezoelectric active vibration isolation platform, and the technical solution adopted is as follows:

[0005] A high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform includes a base 1, a locking mechanism 2, a vibration isolation mechanism 3, and a pressing mechanism 5;

[0006] The vibration isolation mechanism 3 is mounted on the base 1 to reduce vibration; the locking mechanism 2 is mounted on the vibration isolation mechanism 3 to lock the measuring instrument; the extrusion mechanism 5 is mounted below the vibration isolation mechanism 3. The extrusion mechanism 5 unfolds and retracts with the movement of the vibration isolation mechanism 3. When the vibration isolation mechanism 3 is working, the extrusion mechanism 5 extrudes the cooling mechanism 4 to cool the vibration isolation mechanism 3.

[0007] The vibration isolation mechanism 3 includes a telescopic cylinder 31, a support cylinder 32, a third elastic element 33, a movable plate 34, a folding rod 35, an opening slot 36, a first guide slot 37, a second guide slot 38, and a piezoelectric ceramic 39. The telescopic cylinder 31 is mounted on the lower locking plate 22, and the support cylinder 32 is positioned below the telescopic cylinder 31 and sleeved around its outer side. The third elastic element 33 is located inside the support cylinder 32, and the movable plate 34 is positioned below the third elastic element 33. The piezoelectric ceramic 39 is positioned below the movable plate 34 and is connected to the battery via wires and an inverter. The movable plate 34 is located inside the support cylinder 32. The support cylinder 32 slides internally. A cross-shaped first guide groove 37 is formed on the lower surface of the movable plate 34. Second guide grooves 38 are formed on both sides of the first guide groove 37 along its axis. A folding rod 35 is movably disposed inside the first guide groove 37. Limiting pins are provided on both sides of the folding rod 35, and these limiting pins slide within the second guide grooves 38. A rotating pin 311 is provided below the folding rod 35. Stabilizing blocks 310 are provided on both sides of the rotating pin 311, and the stabilizing blocks 310 are mounted on the piezoelectric ceramic 39. The rotating pin 311 rotates around the stabilizing blocks 310. An opening groove 36 is formed on the folding rod 35 along its axis.

[0008] Preferably, the locking mechanism 2 mainly includes a lower locking plate 22 and an upper locking plate 21, with the upper locking plate 21 positioned above the lower locking plate 22. The upper locking plate 21 has a circular ring structure, with several locking grooves 212 evenly distributed circumferentially on its lower surface. The inner surface of each locking groove 212 is an arc-shaped gradient surface, and the locking grooves 212 are used to engage with the scanner's fixing feet. A movable groove 210 is provided on the edge of the lower surface of the upper locking plate 21. The movable groove 210 contains a pin groove 29, a first elastic element 211, a positioning block 27, and an inner pin 28. The positioning block 27 is positioned inside the movable groove 210 and moves within it. The inner pin 28 is positioned on the positioning block 27 and can slide up and down in the pin groove 29 within the movable groove 210. The first elastic element 211 is installed between the movable groove 210 and the positioning block 27 to push the positioning block 27 to move, so that the positioning block 27 remains protruding from the upper surface of the upper locking plate 21 under normal conditions.

[0009] The lower locking disc 22 has a disc structure. A compression groove 214 is formed on the upper surface of the lower locking disc 22 along the circumferential direction, corresponding to the locking groove 212. The compression groove 214 contains a second elastic element 213, a slider 26, and a locking block 23. The slider 26 is disposed within the compression groove 214 and can slide radially within it. The locking block 23 is disposed on the slider 26 and protrudes from the upper surface of the lower locking disc 22. The second elastic element 213 is disposed between the slider 26 and the compression groove 214, used to push the locking block 23 to move, allowing it to contact the inner surface of the locking groove 212 and enter the corresponding slot on the scanner's fixing foot. A positioning groove 24 is formed on the lower locking disc 22, which engages with the positioning block 27. A circular rotating groove 25 is formed on the upper surface of the lower locking disc 22, and a protrusion on the lower surface of the upper locking disc 21 rotates within the rotating groove 25 for limiting its position.

[0010] Preferably, the extrusion mechanism 5 includes an extrusion plate 51, a first telescopic rod 52, a second telescopic rod 53, a universal ball joint 54, a movable head 55, and a notch 56; the extrusion plate 51 is a quarter-fan-shaped plate or a triangular plate structure, one end of its bottom edge is hinged to the piezoelectric ceramic 39 through the movable head 55 provided on the piezoelectric ceramic 39, and the other end is a free end, which is provided at the notch 56 opened at the end of the first guide groove 37 of the piezoelectric ceramic 39; the extrusion plate 51 is provided with a universal ball joint 54 on its side, and the universal ball joint 54 is provided with a second telescopic rod 53, one end of the second telescopic rod 53 is movably connected to the first telescopic rod 52, and the end of the first telescopic rod 52 is installed in the opening groove 36 on the folding rod 35 and can slide in the opening groove 36.

[0011] Preferably, the base 1 is provided with a rotating groove 13, and a turntable 12 is provided inside the rotating groove 13. Multiple rotating columns 15 are arranged circumferentially on the lower surface of the turntable 12. A motor 11 is provided on the base 1, and a spiral plate 14 is provided on the output end of the motor 11. The spiral plate 14 cooperates with the rotating columns 15. The motor 11 drives the spiral plate 14 to rotate, and the rotation of the spiral plate 14 drives the rotating columns 15 to move, causing the turntable 12 to rotate. This causes the vibration isolation mechanism 3 and the locking mechanism 2 to rotate synchronously to adjust the measuring angle of the measuring instrument.

[0012] Preferably, the high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform further includes a cooling mechanism 4 disposed inside the vibration isolation mechanism 3 for cooling the vibration isolation mechanism 3; the cooling mechanism 4 includes a pressing rod 41, a compression cylinder 42, a first connecting pipe 43, a second connecting pipe 44, a fourth elastic element 45, an inner cavity 46, a piston 47, a one-way valve 48, and a cooling tank 49; the inner cavity 46 is formed inside the piezoelectric ceramic 39, and the pressing rod 41 is installed inside the inner cavity 46, one end of the pressing rod 41 extending out of the surface of the piezoelectric ceramic 39, and its top is an arc-shaped structure; the inner cavity 46 is equipped with a fourth elastic element 45 for pushing the pressing rod 41 to reset, and the pressing rod 41 is installed inside the inner cavity 46. A compression cylinder 42 is provided below the compression rod 41, and a piston 47 is provided at the bottom of the compression rod 41. The piston 47 slides inside the telescopic cylinder 31. A first connecting pipe 43 and a second connecting pipe 44 are provided on the compression cylinder 42. A one-way valve 48 is provided on both the first connecting pipe 43 and the second connecting pipe 44. A flat cooling groove 49 is provided on the support cylinder 32. The ends of the first connecting pipe 43 and the second connecting pipe 44 are connected to the cooling groove 49. Under the action of the piston 47, the coolant in the compression cylinder 42 flows in from the first connecting pipe 43 and flows out from the second connecting pipe 44 to the cooling groove 49, and then flows back from the cooling groove 49 to the first connecting pipe 43.

[0013] The beneficial effects of this invention are:

[0014] (1) The vibration isolation mechanism can generate electrical energy in conjunction with the piezoelectric material when the impact of the measuring instrument is reduced. The locking mechanism can stably connect the measuring instrument to the base, making it easy to disassemble and install the measuring instrument. The cooling mechanism can cool the vibration isolation mechanism. The vibration isolation mechanism will generate heat when it moves up and down for a long time. It needs to be cooled by the cooling mechanism, which increases the service life of the vibration isolation mechanism.

[0015] (2) The locking mechanism can quickly lock and disassemble the measuring instrument, saving installation and disassembly time and providing convenience.

[0016] (3) The cooling tank has a flat structure, which facilitates the rapid cooling of the returned cooling water, speeds up the cooling efficiency, and then dissipates heat from the support cylinder. The water inside the cooling tank is circulated and cooled through two one-way valves.

[0017] (4) The piezoelectric ceramic generates electricity through the downward movement of the telescopic cylinder, and at the same time, it can drive the cooling water to complete the water cooling cycle inside the cooling tank. During the downward pressing process, the extrusion plate increases the contact area with the piezoelectric ceramic, which facilitates the piezoelectric ceramic to generate electricity. During the upward movement of the movable plate, the extrusion plate is pulled up, which facilitates the resetting of the extrusion rod. At the same time, the extrusion plate can also be reset. When the extrusion plate leaves the surface of the piezoelectric ceramic, the pressure changes and generates voltage, thereby achieving the effect of power generation.

[0018] (5) Since the rotating column is evenly distributed in a circular shape at the bottom of the spiral plate, when the spiral plate rotates, it drives the turntable to rotate, which in turn causes the vibration isolation mechanism to rotate synchronously, thus adjusting the measuring angle of the measuring instrument. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a structural illustration of the present invention;

[0022] Figure 3 This is a schematic diagram of the locking disc structure;

[0023] Figure 4 This is a schematic diagram of the locking mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the vibration isolation mechanism of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the diagram;

[0026] Figure 7 This is a schematic diagram of the cooling mechanism of the present invention;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point B in the diagram;

[0028] Figure 9 This is a schematic diagram showing the connection between the vibration isolation mechanism and the extrusion mechanism of the present invention.

[0029] In the diagram: 1. Base; 11. Motor; 12. Turntable; 13. Rotating groove; 14. Spiral plate; 15. Rotating column; 2. Locking mechanism; 21. Upper locking plate; 22. Lower locking plate; 23. Locking block; 24. Positioning groove; 25. Rotating groove; 26. Slider; 27. Positioning block; 28. Inner pin; 29. ​​Pin groove; 210. Movable groove; 211. First elastic element; 212. Locking groove; 213. Second elastic element; 214. Compression groove; 3. Vibration isolation mechanism; 31. Telescopic cylinder; 32. Support cylinder; 33. Third elastic element; 34. Movable 35. Moving plate; 36. Folding rod; 37. Opening slot; 38. First guide slot; 39. Second guide slot; 30. Piezoelectric ceramic; 310. Stabilizing block; 311. Rotating pin; 4. Cooling mechanism; 41. Extrusion rod; 42. Compression cylinder; 43. First connecting pipe; 44. Second connecting pipe; 45. Fourth elastic element; 46. Inner cavity; 47. Piston; 48. One-way valve; 49. Cooling tank; 5. Extrusion mechanism; 51. Extrusion plate; 52. First telescopic rod; 53. Second telescopic rod; 54. Universal ball; 55. Moving head; 56. Groove. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0031] Please refer to the instruction manual appendix. Figure 1-9 As shown, the high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform described in this embodiment includes a base 1, a locking mechanism 2, a vibration isolation mechanism 3, a cooling mechanism 4, and a pressing mechanism 5;

[0032] The vibration isolation mechanism 3 is mounted on the base 1 to reduce vibration; the locking mechanism 2 is mounted on the vibration isolation mechanism 3 to lock the measuring instrument; the cooling mechanism 4 is mounted inside the vibration isolation mechanism 3 to cool the vibration isolation mechanism 3; the pressing mechanism 5 is mounted below the vibration isolation mechanism 3. The pressing mechanism 5 unfolds and retracts with the movement of the vibration isolation mechanism 3. When the vibration isolation mechanism 3 is working, the pressing mechanism 5 presses the cooling mechanism 4 to cool the vibration isolation mechanism 3.

[0033] When the vibration isolation mechanism 3 reduces the impact of the measuring instrument, it can generate electrical energy in conjunction with the piezoelectric material. The locking mechanism 2 can stably connect the measuring instrument to the base 1, which facilitates the disassembly and installation of the measuring instrument. The cooling mechanism 4 can cool the vibration isolation mechanism 3. The vibration isolation mechanism 3 will generate heat when it moves up and down for a long time. The cooling mechanism 4 is needed to cool the vibration isolation mechanism 3, thereby increasing the service life of the vibration isolation mechanism 3.

[0034] The locking mechanism 2 mainly includes a lower locking plate 22 and an upper locking plate 21, with the upper locking plate 21 positioned above the lower locking plate 22. The upper locking plate 21 has a circular ring structure, with several locking grooves 212 evenly distributed along the circumference of its lower surface. The inner surface of each locking groove 212 is a gradually changing arc-shaped surface, and the locking grooves 212 are used to engage with the scanner's fixing feet. A movable groove 210 is provided on the edge of the lower surface of the upper locking plate 21.

[0035] The movable groove 210 is provided with a pin groove 29, a first elastic element 211, a positioning block 27 and an inner pin 28. The positioning block 27 is disposed inside the movable groove 210 and moves inside the movable groove 210. The inner pin 28 is disposed on the positioning block 27 and can slide up and down in the pin groove 29 inside the movable groove 210. The first elastic element 211 is installed between the movable groove 210 and the positioning block 27 and is used to push the positioning block 27 to move, so that the positioning block 27 remains protruding from the upper surface of the upper locking plate 21 in normal state.

[0036] The lower locking disc 22 has a disc structure. A compression groove 214 is formed on the upper surface of the lower locking disc 22 along the circumferential direction, corresponding to the locking groove 212. The compression groove 214 contains a second elastic element 213, a slider 26, and a locking block 23. The slider 26 is disposed within the compression groove 214 and can slide radially within it. The locking block 23 is disposed on the slider 26 and protrudes from the upper surface of the lower locking disc 22. The second elastic element 213 is disposed between the slider 26 and the compression groove 214, used to push the locking block 23 to move, allowing it to contact the inner surface of the locking groove 212 and enter the corresponding slot on the scanner's fixing foot. A positioning groove 24 is formed on the lower locking disc 22, which engages with the positioning block 27. A circular rotating groove 25 is formed on the upper surface of the lower locking disc 22, and a protrusion on the lower surface of the upper locking disc 21 rotates within the rotating groove 25 for limiting its position.

[0037] Place the measuring instrument to be installed on the upper surface of the lower locking plate 22, and adjust its position by rotating the upper locking plate 21 on the lower locking plate 22. When the upper locking plate 21 rotates, it drives the locking groove 212 to rotate synchronously. The inner surface of the locking groove 212 is a curved gradient surface, so that when the locking block 23 contacts the locking groove 212, it will gradually extend from the inside of the upper locking plate 21 towards the center until the locking block 23 enters the corresponding slot on the scanner fixing foot, thus positioning the scanner. After the scanner is positioned, the upper locking plate 21 and the lower locking plate 22 are then... 2. Locking: When the locking block 23 locks the scanner, the positioning block 27 enters the positioning groove 24. At this time, under the action of the first elastic element 211, the positioning block 27 is pressed into the positioning groove 24 by the first elastic element 211, and the positioning block 27 will not disengage from the positioning groove 24, thus achieving locking. This also locks the upper locking plate 21 and the lower locking plate 22. When the scanner needs to be removed, the positioning block 27 is pulled out from the positioning groove 24, and then the upper locking plate 21 is rotated, causing the upper locking plate 21 and the lower locking plate 22 to move relative to each other, thereby unlocking. The locking mechanism 2 allows for quick locking and disassembly of the measuring instrument, saving installation and disassembly time and providing convenience.

[0038] The vibration isolation mechanism 3 includes a telescopic cylinder 31, a support cylinder 32, a third elastic element 33, a movable plate 34, a folding rod 35, an opening slot 36, a first guide slot 37, a second guide slot 38, and a piezoelectric ceramic 39. The telescopic cylinder 31 is mounted on the lower locking plate 22, and the support cylinder 32 is positioned below the telescopic cylinder 31 and sleeved around its outer side. The third elastic element 33 is located inside the support cylinder 32, and the movable plate 34 is positioned below the third elastic element 33. The piezoelectric ceramic 39 is positioned below the movable plate 34 and is connected to the battery via wires and an inverter. The movable plate 34 is located inside the support cylinder 32. The internal sliding of the support cylinder 32 is described. The lower surface of the movable plate 34 is provided with a cross-shaped first guide groove 37. The first guide groove 37 is provided with second guide grooves 38 on both sides of the axis. A folding rod 35 is movably arranged inside the first guide groove 37. Limit pins are provided on both sides of the folding rod 35. The limit pins slide inside the second guide grooves 38. A rotating pin 311 is provided below the folding rod 35. Stabilizing blocks 310 are provided on both sides of the rotating pin 311. The stabilizing blocks 310 are provided on the piezoelectric ceramic 39. The rotating pin 311 rotates around the stabilizing blocks 310. An opening groove 36 is provided on the folding rod 35 along the axial direction.

[0039] When the movable plate 34 moves downward, the end of the folding rod 35 slides inside the first guide groove 37 until the movable plate 34 drives the extrusion mechanism 5 to extrude onto the piezoelectric ceramic 39 to generate electricity.

[0040] Due to the material properties of the piezoelectric ceramic 39, in order for the piezoelectric ceramic 39 to generate electricity when it receives pressure and tension, when the telescopic cylinder 31 is bumped, the telescopic cylinder 31 moves up and down, driving the third elastic element 33 to move. The third elastic element 33 drives the movable plate 34 to move. During the movement of the movable plate 34, the first guide groove 37 and the second guide groove 38 move synchronously. Then, the movement of the first guide groove 37 drives the folding rod 35 to move. When the folding rod 35 moves downward, it drives the extrusion mechanism 5 to move. When the extrusion mechanism 5 moves downward, it extrudes the surface of the piezoelectric ceramic 39 to generate current. The generated current is stored inside the battery through the inverter via wires.

[0041] The cooling mechanism 4 includes a pressing rod 41, a compression cylinder 42, a first connecting pipe 43, a second connecting pipe 44, a fourth elastic element 45, an inner cavity 46, a piston 47, a one-way valve 48, and a cooling tank 49. The inner cavity 46 is formed inside the piezoelectric ceramic 39, and the pressing rod 41 is installed inside the inner cavity 46. One end of the pressing rod 41 extends out of the surface of the piezoelectric ceramic 39. The fourth elastic element 45 for pushing the pressing rod 41 to reset is installed inside the inner cavity 46. The compression cylinder 42 is arranged below the pressing rod 41, and the piston is arranged at the bottom of the pressing rod 41. 47. The piston 47 slides inside the telescopic cylinder 31. The compression cylinder 42 is provided with a first connecting pipe 43 and a second connecting pipe 44. Both the first connecting pipe 43 and the second connecting pipe 44 are provided with a one-way valve 48. The support cylinder 32 is provided with a cooling groove 49. The ends of the first connecting pipe 43 and the second connecting pipe 44 are connected to the cooling groove 49. Under the action of the piston 47, the coolant in the compression cylinder 42 flows in from the first connecting pipe 43 and flows out from the second connecting pipe 44 to the cooling groove 49, and then flows back from the cooling groove 49 to the first connecting pipe 43.

[0042] The ends of the first connecting pipe 43 and the second connecting pipe 44 are connected to the compression cylinder 42. The first connecting pipe 43 provides a water inlet passage, and the second connecting pipe 44 provides a drainage passage. The end of the second connecting pipe 44 is connected to the upper inner surface of the cooling tank 49. When draining water, the end of the second connecting pipe 44 can spray water onto the inner wall of the cooling tank 49 to remove heat. When the movable plate 34 moves downward, it drives the extrusion mechanism 5 to move. The top of the extrusion rod 41 has an arc-shaped structure. The extrusion mechanism 5 extrudes the extrusion rod 41, and the extrusion rod 41 moves downward. The piston 47 moves upward, causing the extrusion rod 41 to move. The piston 47 moves upward, drawing the cooling water inside the cooling tank 49 into the compression cylinder 42. The piston 47 squeezes the water inside the compression cylinder 42, causing the water inside the compression cylinder 42 to be squeezed into the cooling tank 49. The cooling tank 49 has a flat structure, which facilitates the rapid cooling of the returned cooling water, accelerates the cooling efficiency, and thus dissipates heat from the support cylinder 32. The water inside the cooling tank 49 is circulated and cooled through two one-way valves 48.

[0043] The extrusion mechanism 5 includes an extrusion plate 51, a first telescopic rod 52, a second telescopic rod 53, a universal ball joint 54, a movable head 55, and a notch 56. The extrusion plate 51 is a quarter-fan-shaped or triangular plate structure. One end of its bottom edge is hinged to the piezoelectric ceramic 39 through the movable head 55 provided on the piezoelectric ceramic 39, and the other end is a free end, which is located at the notch 56 opened at the end of the first guide groove 37 of the piezoelectric ceramic 39. The extrusion plate 51 is provided with a universal ball joint 54 on its side. The universal ball joint 54 is provided with a second telescopic rod 53. One end of the second telescopic rod 53 is movably connected to the first telescopic rod 52. The end of the first telescopic rod 52 is installed in the opening groove 36 on the folding rod 35 and can slide in the opening groove 36.

[0044] As the movable plate 34 moves downwards, the compression plate 51 causes the movable plate 34 to gradually fold from a vertically unfolded state to a horizontal state. During this process, as the movable plate 34 moves downwards, it drives the first guide groove 37 and the second guide groove 38 to move. Initially, the folding rod 35 is slightly tilted. When the folding rod 35 is subjected to downward pressure from the movable plate 34, the free end of the folding rod 35 slides inside the first guide groove 37, causing the folding rod 35 to gradually change from a slightly tilted state to a horizontal state. When the folding rod 35 becomes horizontal, the opening groove 36 on it moves synchronously during this change. One end of the second telescopic rod 53 is internally slidably disposed. When the end of the second telescopic rod 53 is limited within the opening slot 36, the second telescopic rod 53 will not disengage from the opening slot 36 during sliding. When the second telescopic rod 53 drives the first telescopic rod 52 to move, the first telescopic rod 52 is pulled by the universal ball 54, and the universal ball 54 will rotate on the extrusion plate 51. Since the extrusion plate 51 is a quarter-fan-shaped plate structure that cooperates with the piezoelectric ceramic 39, one end of the bottom edge of the extrusion plate 51 is rotatably connected to the piezoelectric ceramic 39, and the other end of the bottom edge is a free end. As the folding rod 35 retracts, the second telescopic rod 53 gradually moves from the top of the opening slot 36 to the bottom of the opening slot 36 until one side of the extrusion plate 51 is parallel to the folding rod 35. At this point, the extrusion plate 51 folds and presses against the surface of the piezoelectric ceramic 39, achieving pressure-based electricity generation. During the downward pressing process, the lower surface of the extrusion plate 51 presses against the extrusion rod 41. Simultaneously, the downward movement of the extrusion rod 41 drives water flow from below the cooling tank 49 through the cooperation of the first connecting pipe 43 and the second connecting pipe 44 to above the cooling tank 49, achieving... Cooling of the telescopic cylinder 31: The downward movement of the telescopic cylinder 31 enables the piezoelectric ceramic 39 to generate electrical energy, and at the same time drives the cooling water to circulate inside the cooling tank 49. During the downward pressing process, the extrusion plate 51 increases the contact area with the piezoelectric ceramic 39, which facilitates the piezoelectric ceramic 39 to generate electricity. During the upward movement of the movable plate 34, the extrusion plate 51 is pulled up, which facilitates the reset of the extrusion rod 41. At the same time, the extrusion plate 51 can also be reset. When the extrusion plate 51 leaves the surface of the piezoelectric ceramic 39, the pressure changes and generates voltage, thereby achieving the effect of power generation.

[0045] The base 1 is provided with a rotating groove 13, and a turntable 12 is provided inside the rotating groove 13. Multiple rotating columns 15 are arranged circumferentially on the lower surface of the turntable 12. A motor 11 is provided on the base 1, and a spiral plate 14 is provided on the output end of the motor 11. The spiral plate 14 cooperates with the rotating columns 15. The motor 11 drives the spiral plate 14 to rotate, and the rotation of the spiral plate 14 drives the rotating columns 15 to move, causing the turntable 12 to rotate. This causes the vibration isolation mechanism 3 and the locking mechanism 2 to rotate synchronously to adjust the measuring angle of the measuring instrument.

[0046] In use, the slot on the measuring instrument base 1 is aligned with the locking block 23. When the upper locking plate 21 rotates, it drives the locking groove 212 to rotate synchronously. The inner surface of the locking groove 212 is a gradually curved surface, so that when the locking block 23 contacts the locking groove 212, it gradually extends from the inside of the upper locking plate 21 towards the center until the locking block 23 enters the corresponding slot on the scanner fixing foot, thus positioning the scanner. After the scanner is positioned, the upper locking plate 21 and the lower locking plate 22 are locked. When the locking block 23 just locks the scanner, the positioning block 27 just enters the positioning groove 24. Inside, under the action of the first elastic element 211, the positioning block 27 is pushed into the positioning groove 24 by the first elastic element 211, and the positioning block 27 will not leave the inside of the positioning groove 24, thus achieving locking, and then the upper locking plate 21 and the lower locking plate 22 are locked; during the vehicle's movement, due to the constant changes in the road, the vehicle will shake. When the telescopic cylinder 31 is shaken, the telescopic cylinder 31 moves up and down, and the telescopic cylinder 31 drives the third elastic element 33 to move. The third elastic element 33 drives the movable plate 34 to move. As the movable plate 34 moves downward, the pressing plate 51 gradually retracts and folds from the vertical unfolded state to the horizontal state.During this process, when the movable plate 34 moves downward, it drives the first guide groove 37 and the second guide groove 38 to move. Initially, the folding rod 35 is in a slightly tilted state. When the folding rod 35 is subjected to downward pressure from the movable plate 34, the free end of the folding rod 35 inside the first guide groove 37 will slide inside the first guide groove 37, causing the folding rod 35 to gradually change from a slightly tilted state to a horizontal state. When the folding rod 35 becomes horizontal, it drives the opening groove 36 opened on it to move synchronously. One end of the second telescopic rod 53 is slidably installed inside the opening groove 36. When the end of the second telescopic rod 53 is limited in the opening groove 36, the second telescopic rod 53 will not disengage from the opening groove 36 during the sliding process. When the second telescopic rod 53 drives the first telescopic rod 52 to move, the first telescopic rod 52 is pulled by the universal ball 54. The universal ball 54 will rotate on the extrusion plate 51. Since the extrusion plate 51 is designed to... The piezoelectric ceramic 39 is paired with a quarter-fan-shaped plate structure. One end of the bottom edge of the extrusion plate 51 is rotatably connected to the piezoelectric ceramic 39, while the other end is a free end. As the folding rod 35 is continuously retracted, the second telescopic rod 53 gradually moves from the top of the opening slot 36 to the bottom of the opening slot 36 until one side of the extrusion plate 51 is parallel to the folding rod 35. At this time, the extrusion plate 51 folds and presses against the surface of the piezoelectric ceramic 39 to achieve pressure-based electricity generation. When the extrusion plate 51 moves downward, it presses against the top of the extrusion rod 41, forcing the extrusion rod 41 to move downward. The movement of the extrusion rod 41 drives the piston 47 to move. The piston 47 moves upward to draw the cooling water inside the cooling tank 49 into the compression cylinder 42. The piston 47 squeezes the water inside the compression cylinder 42, causing the water inside the compression cylinder 42 to be squeezed into the cooling tank 49. After the cooling water enters the cooling tank 49, it is returned by the movement of the piston 47. When the scanner needs to be removed, pull the positioning block 27 out of the positioning groove 24, and then rotate the upper locking plate 21 so that the upper locking plate 21 and the lower locking plate 22 move relative to each other, thereby unlocking the scanner and removing it from the upper locking plate.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision multi-degree-of-freedom piezoelectric active isolation platform, characterized in that, The platform comprises a base (1), a locking mechanism (2), a vibration isolation mechanism (3) and an extrusion mechanism (5); The vibration isolation mechanism (3) is arranged on the base (1) and used for reducing vibration; the locking mechanism (2) is arranged on the vibration isolation mechanism (3) and used for locking a measuring instrument; the extrusion mechanism (5) is arranged below the vibration isolation mechanism (3) and is unfolded and folded along with movement of the vibration isolation mechanism (3), so that the extrusion mechanism (5) extrudes the cooling mechanism (4) to cool the vibration isolation mechanism (3) when the vibration isolation mechanism (3) works; The vibration isolation mechanism (3) comprises a telescopic cylinder (31), a supporting cylinder (32), a third elastic member (33), a movable plate (34), a folding rod (35), an open slot (36), a first guide slot (37), a second guide slot (38) and a piezoelectric ceramic (39); the telescopic cylinder (31) is arranged on the lower lock disc (22); the supporting cylinder (32) is arranged below the telescopic cylinder (31) and is sleeved outside the telescopic cylinder (31); the inside of the supporting cylinder (32) is provided with the third elastic member (33); the lower portion of the third elastic member (33) is provided with the movable plate (34); the lower portion of the movable plate (34) is provided with the piezoelectric ceramic (39); the piezoelectric ceramic (39) is connected with a storage battery through wires and an inverter; the movable plate (34) is located in the inside of the supporting cylinder (32) and slides in the inside of the supporting cylinder (32); the lower surface of the movable plate (34) is provided with a cross-shaped first guide slot (37); the first guide slot (37) is provided with a second guide slot (38) on both sides along an axis; the folding rod (35) is movably arranged in the first guide slot (37); the two sides of the folding rod (35) are provided with limiting pins; the limiting pins slide in the second guide slot (38); the lower portion of the folding rod (35) is provided with a rotating pin (311); the two sides of the rotating pin (311) are provided with stabilizing blocks (310); the stabilizing blocks (310) are arranged on the piezoelectric ceramic (39); the rotating pin (311) rotates around the stabilizing blocks (310); the open slot (36) is arranged on the folding rod (35) along the axis direction.

2. The high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform according to claim 1, characterized in that, The locking mechanism (2) mainly comprises a lower lock disc (22) and an upper lock disc (21); the upper lock disc (21) is arranged above the lower lock disc (22). The upper locking disc (21) is a circular ring structure, and a lower surface is uniformly distributed with a plurality of locking grooves (212) in the circumferential direction. Inner surfaces of the locking grooves (212) are arc-shaped gradient surfaces, and the locking grooves (212) are used in cooperation with scanner fixing feet. An edge of the lower surface of the upper locking disc (21) is provided with a movable groove (210). An inner portion of the movable groove (210) is provided with a pin groove (29), a first elastic member (211), a positioning block (27), and an inner pin (28). The positioning block (27) is arranged in the inner portion of the movable groove (210) and moves in the inner portion of the movable groove (210). The inner pin (28) is arranged on the positioning block (27). The inner pin (28) can slide up and down in the pin groove (29) in the movable groove (210). The first elastic member (211) is installed between the movable groove (210) and the positioning block (27) and is used to push the positioning block (27) to move, so that the positioning block (27) is kept protruding from an upper surface of the upper locking disc (21) in a normal state. The lower locking disc (22) is a disc structure. An upper surface of the lower locking disc (22) is provided with a compression groove (214) at a position corresponding to the locking groove (212) in the circumferential direction. An inner portion of the compression groove (214) is provided with a second elastic member (213), a sliding block (26), and a locking block (23). The sliding block (26) is arranged in the compression groove (214) and can slide in the radial direction in the compression groove (214). The locking block (23) is arranged on the sliding block (26) and protrudes from the upper surface of the lower locking disc (22). The second elastic member (213) is arranged between the sliding block (26) and the compression groove (214) and is used to push the locking block (23) to move, so that the locking block (23) can contact the inner surface of the locking groove (212) and enter the corresponding clamping groove on the scanner fixing foot. The lower locking disc (22) is provided with a positioning groove (24). The positioning groove (24) is clamped with the positioning block (27). The upper surface of the lower locking disc (22) is provided with a circular rotating groove (25). The lower surface of the upper locking disc (21) is provided with a protrusion in the inner portion of the rotating groove (25) and rotates in the rotating groove (25) to limit the position.

3. The high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform according to claim 1, characterized in that, The extrusion mechanism (5) comprises an extrusion plate (51), a first telescopic rod (52), a second telescopic rod (53), a universal ball (54), a movable head (55), and a notch (56). The extrusion plate (51) is a one-fourth sector plate or a triangular plate structure. One end of a bottom edge is hinged with the piezoelectric ceramic (39) through the movable head (55) arranged on the piezoelectric ceramic (39). The other end is a free end, which is arranged at the notch (56) at the end of the first guide groove (37) of the piezoelectric ceramic (39). The side surface of the extrusion plate (51) is provided with the universal ball (54). The universal ball (54) is provided with the second telescopic rod (53). One end of the second telescopic rod (53) is movably connected with the first telescopic rod (52). The end of the first telescopic rod (52) is installed in the opening groove (36) of the folding rod (35) and can slide in the opening groove (36).

4. The high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform according to claim 1, characterized in that, The base (1) is provided with a rotating groove (13), the rotating groove (13) is internally provided with a rotating disc (12), the lower surface of the rotating disc (12) is circumferentially provided with a plurality of rotating columns (15), the base (1) is provided with a motor (11), the output end of the motor (11) is provided with a spiral plate (14), the spiral plate (14) is matched with the rotating column (15), the spiral plate (14) is driven to rotate by the motor (11), the rotating column (15) is driven to move by the rotation of the spiral plate (14), the rotating disc (12) is rotated, and then the vibration isolation mechanism (3) and the locking mechanism (2) are synchronously rotated, so that the measurement angle of the measuring instrument is adjusted.

5. The high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform according to claim 1, characterized in that, The high-precision multi-degree-of-freedom piezoelectric active vibration isolation platform further comprises a cooling mechanism (4) arranged in the vibration isolation mechanism (3) and used for cooling the vibration isolation mechanism (3); the cooling mechanism (4) comprises an extrusion rod (41), a compression cylinder (42), a first connecting pipe (43), a second connecting pipe (44), a fourth elastic member (45), an inner cavity (46), a piston (47), a one-way valve (48) and a cooling groove (49); the inner cavity (46) is arranged in the piezoelectric ceramic (39), the inner cavity (46) is internally provided with the extrusion rod (41), one end of the extrusion rod (41) extends out of the surface of the piezoelectric ceramic (39), and the top of the extrusion rod (41) is of a circular arc structure; the inner cavity (46) is internally provided with the fourth elastic member (45) used for driving the extrusion rod (41) to reset, the extrusion rod (41) is provided below the compression cylinder (42), the bottom of the extrusion rod (41) is provided with the piston (47), the piston (47) slides in the telescopic cylinder (31), the compression cylinder (42) is provided with the first connecting pipe (43) and the second connecting pipe (44), the first connecting pipe (43) and the second connecting pipe (44) are provided with the one-way valve (48), the support cylinder (32) is provided with the flat cooling groove (49), and the ends of the first connecting pipe (43) and the second connecting pipe (44) are in communication with the cooling groove (49); under the action of the piston (47), the cooling liquid in the compression cylinder (42) flows into the first connecting pipe (43) and flows out of the second connecting pipe (44) to the cooling groove (49), and then flows back to the first connecting pipe (43) from the cooling groove (49).

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