Simulation equipment for testing piezoelectric energy harvester
By designing simulation equipment for piezoelectric energy capture devices, including simulated vibration and positioning mechanisms, the impact of different environments and locations on the equipment usage effect is solved, and effective testing and evaluation of the power generation performance of piezoelectric energy capture devices is achieved.
Patent Information
- Application Number
- CN202420937652.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When using piezoelectric energy traps to recover railway vibration energy, the impact of different use environments and locations makes the equipment use different effects, and there is a lack of a simulation device to conduct simulation tests under the environment and locations in advance.
A simulation device is designed, including a test bench, a positioning bench, a simulated vibration mechanism and a positioning mechanism. The simulated vibration of the positioning table is achieved through the simulated vibration mechanism, and the piezoelectric energy trap is stably positioned and tested through the positioning mechanism.
This simulation equipment effectively tests the power generation performance of the piezoelectric energy trap by simulating the vibration conditions in different environments and locations, improving the reliability and reproducibility of the test and adapting to the needs of different railway vibration environments.
Smart Images
Figure CN222653058U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of piezoelectric energy conversion devices and relates to simulation equipment for testing piezoelectric energy harvesters. Background Art
[0002] Due to the inherent disadvantages of storage batteries, the large amount of vibration energy commonly found in railway tracks, and the high power density of piezoelectric transduction, railway vibration energy recovered by the piezoelectric effect has attracted more and more attention from researchers as a clean energy source.
[0003] Railways are well-connected in my country. Affected by the geographical environment of some areas, the different use environments of piezoelectric energy harvesters will affect their use effects. Therefore, there is an urgent need for a simulation device to simulate the piezoelectric energy harvester before using it, simulating its use in various environments and locations. Utility Model Content
[0004] The utility model aims to provide a simulation device for testing a piezoelectric energy harvester, which realizes the simulated vibration of a positioning table through a simulated vibration mechanism, and tests the power generation performance of the piezoelectric energy harvester through the simulated vibration.
[0005] The technical solution adopted by the utility model is a simulation device for testing a piezoelectric energy harvester, including a test bench, a plurality of spring dampers are evenly arranged on the top of the test bench, a positioning table is fixedly connected to the tops of the plurality of spring dampers, a simulation vibration mechanism is fixed on the test bench below the positioning table, and a positioning mechanism is also arranged on the positioning table for fixing the piezoelectric energy harvester to be simulated on the positioning table.
[0006] The utility model is also characterized in that:
[0007] The simulated vibration mechanism includes a mounting plate fixed on the test bench, a driving motor is fixedly arranged on the top of the mounting plate, the output shaft of the driving motor is fixedly connected to a reducer, a support plate is also fixed to an end of the mounting plate away from the driving motor, the output shaft of the reducer passes through the support plate and is fixedly connected to an eccentric wheel, the end of the eccentric wheel away from the fixed position with the output shaft of the reducer is also rotatably connected to a rotating shaft 1, the rotating shaft 1 is parallel to the output shaft of the reducer, the end of the rotating shaft 1 away from the support plate is also rotatably connected to a rotating plate, the end of the rotating plate away from the rotating shaft 1 is rotatably connected to a rotating shaft 2 parallel to the rotating shaft 1, the rotating shaft 2 is rotatably connected to a top plate, and the upper surface of the top plate is fixedly connected to the lower surface of the positioning platform.
[0008] A bracket is fixed on the mounting plate, and the reducer is fixed on the mounting plate through the bracket.
[0009] The output shaft of the reducer is rotatably connected in the support plate through a bearing.
[0010] A connecting ear is rotatably connected on the second rotating shaft, and the top plate is fixed on the connecting ear.
[0011] The positioning platform is configured as a rectangular plate frame structure with openings on the top and one side. The positioning mechanism is arranged on the side wall of the positioning platform adjacent to the open side. The top of the test bench is fixedly connected to a limiting plate. There are two limiting plates, which are respectively located below the two adjacent sides of the opening side of the positioning platform.
[0012] The positioning mechanism comprises a screw connected to the side wall of the positioning platform through threads, one end of the screw is located inside the positioning platform and rotatably connected to a positioning plate, and the other end of the screw is located outside the positioning platform and fixedly connected to a rotating wheel.
[0013] The surface of the screw and the surface of the positioning plate away from the screw are both provided with an anti-slip layer.
[0014] A transport roller mechanism is also commonly connected between the inner surface of one side of the opening of the positioning platform and the test platform.
[0015] The transport roller mechanism includes inclined plates fixed at both ends of the bottom side surfaces of one side of the positioning platform opening, the other end of the inclined plate is fixed at the corresponding position of the test bench, a plurality of rollers are connected and rotated together between the two inclined plates, and a transition plate is also connected between the two inclined plates and the inner surface of the bottom of one side of the positioning platform opening.
[0016] The beneficial effects of the utility model are:
[0017] (1) The utility model drives the eccentric wheel to rotate through the driving motor, and drives the rotating shaft 1 and the rotating plate to move. The movement of the rotating plate cooperates with the action of the rotating shaft 2 to enable the top plate to reciprocate, thereby driving the movement of the positioning table and cooperating with the spring damper to realize the vibration of the positioning table. The simulated vibration mechanism is used to realize the simulated vibration of the positioning table, and the power generation performance of the piezoelectric energy harvester is tested through the simulated vibration. The utility model is easy to use and has a wider range of applications. The vibration amplitude can be adjusted by adjusting the speed of the driving motor.
[0018] (2) The utility model drives the screw to rotate by rotating the rotating wheel, so that the screw moves and drives the positioning plate to move, and cooperates with the anti-skid layer on the screw and the positioning plate to position the piezoelectric energy harvester, making it more stable during vibration, avoiding errors caused by equipment displacement, and making the errors of performance measurement data smaller, thereby improving the reliability and reproducibility of test data.
[0019] (3) The utility model uses a mechanism composed of multiple rollers and inclined plates to help transport the piezoelectric energy harvester smoothly and safely to the test location, thereby reducing manpower requirements and also reducing damage or incorrect installation that may occur during operation.
[0020] (4) The utility model can adjust the vibration amplitude by adjusting the speed of the motor to adapt to different test conditions and environments in response to the needs of different railway vibration environments, thereby providing a wider range of applications and higher adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of a simulation device for testing a piezoelectric energy harvester according to the utility model;
[0022] Figure 2 It is a structural schematic diagram of a simulated vibration mechanism in a simulation device for testing a piezoelectric energy harvester according to the utility model;
[0023] Figure 3 It is a schematic diagram of the installation position of the positioning mechanism in the simulation device for testing the piezoelectric energy harvester of the utility model;
[0024] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.
[0025] In the figure, 1. test bench; 2. spring damper; 3. limit plate; 4. positioning table; 5. inclined plate; 6. roller; 7. mounting plate; 8. driving motor; 9. reducer; 10. bracket; 11. support plate; 12. eccentric wheel; 13. rotating shaft 1; 14. rotating plate; 15. rotating shaft 2; 16. top plate; 17. positioning plate; 18. screw; 19. rotating wheel; 20. connecting ear; 21. transition plate. DETAILED DESCRIPTION
[0026] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0027] The utility model is a simulation device for testing a piezoelectric energy harvester, and its structure is as follows: Figure 1 As shown, it includes a test bench 1, a plurality of spring dampers 2 are evenly arranged on the top of the test bench 1, a positioning table 4 is fixedly connected to the tops of the plurality of spring dampers 2, a simulated vibration mechanism is fixed on the test bench 1 below the positioning table 4, and a positioning mechanism for fixing the piezoelectric energy harvester to be simulated on the positioning table 4 is also provided on the positioning table 4.
[0028] like Figure 2As shown, the simulated vibration mechanism includes a mounting plate 7 fixed on the test bench 1, a driving motor 8 is fixedly arranged on the top of the mounting plate 7, the output shaft of the driving motor 8 is fixedly connected to a reducer 9, a support plate 11 is also fixed to the end of the mounting plate 7 away from the driving motor 8, the output shaft of the reducer 9 passes through the support plate 11 and is fixedly connected to an eccentric wheel 12, the end of the eccentric wheel 12 away from the fixed position of the output shaft of the reducer 9 is also rotatably connected to a rotating shaft 13, the rotating shaft 13 is parallel to the output shaft of the reducer 9, the end of the rotating shaft 13 away from the support plate 11 is also rotatably connected to a rotating plate 14, and the end of the rotating plate 14 away from the rotating shaft 13 is rotatably connected to a rotating shaft parallel to the rotating shaft 13 The rotating shaft 15 is rotatably connected to a top plate 16, and the upper surface of the top plate 16 is fixedly connected to the lower surface of the positioning platform 4. The eccentric wheel 12 can be rotated by driving the motor 8, and the rotating shaft 13 and the rotating plate 14 can be driven to move. The movement of the rotating plate 14 cooperates with the action of the rotating shaft 15 to enable the top plate 16 to reciprocate, to drive the positioning platform 4 to move and cooperate with the spring damper 2 to realize the vibration of the positioning platform 4. The simulated vibration mechanism is used to realize the simulated vibration of the positioning platform 4, and the power generation performance of the piezoelectric energy harvester is tested by the simulated vibration. It is easy to use and has a wider range of uses. The vibration amplitude can be adjusted by adjusting the speed of the driving motor 8.
[0029] A bracket 10 is fixed on the mounting plate 7 , and the reducer 9 is fixed on the mounting plate 7 through the bracket 10 .
[0030] The output shaft of the reducer 9 is rotatably connected in the support plate 11 through a bearing.
[0031] A connecting ear 20 is rotatably connected to the second rotating shaft 15 , and the top plate 16 is fixed on the connecting ear 20 .
[0032] like Figure 3 As shown, the positioning platform 4 is configured as a rectangular plate frame structure with openings on the top and one side, the positioning mechanism is arranged on the side wall of the positioning platform 4 adjacent to the open side, and the top of the test bench 1 is fixedly connected with a limiting plate 3, the number of the limiting plates 3 is two and they are respectively located below the two sides adjacent to the open side of the positioning platform 4.
[0033] like Figure 4 As shown, the positioning mechanism includes a screw 18 connected to the side wall of the positioning platform 4 by threads, one end of the screw 18 is located inside the positioning platform 4 and is rotatably connected to the positioning plate 17, and the other end of the screw 18 is located outside the positioning platform 4 and is fixedly connected to the rotating wheel 19.
[0034] A transport roller mechanism is also commonly connected between the inner surface of one side of the opening of the positioning platform 4 and the test platform 1 .
[0035] The working principle of this embodiment is:
[0036] Place the piezoelectric energy harvester to be simulated on the positioning platform 4, rotate the rotating wheel 19 to drive the screw 18 to rotate, so that the screw 18 moves and drives the positioning plate 17 to move, clamp the piezoelectric energy harvester, and realize positioning of the piezoelectric energy harvester;
[0037] The eccentric wheel 12 can be rotated by driving the motor 8, and the rotating shaft 13 and the rotating plate 14 are driven to move. The movement of the rotating plate 14 cooperates with the action of the rotating shaft 2 15 to enable the top plate 16 to reciprocate, thereby driving the positioning platform 4 to move and cooperate with the spring damper 2 to realize the vibration of the positioning platform 4. The simulated vibration of the positioning platform 4 is realized through the simulated vibration mechanism.
[0038] Example 2
[0039] On the basis of Example 1, the transport roller mechanism includes inclined plates 5 fixed at both ends of the bottom side surfaces of one side of the opening of the positioning platform 4, the other end of the inclined plates 5 is fixed at the corresponding position of the test platform 1, and a plurality of rollers 6 are connected and rotated together between the two inclined plates 5. A transition plate 21 is also connected between the two inclined plates 5 and the inner surface of the bottom of one side of the opening of the positioning platform 4. The piezoelectric energy harvester is transported to the positioning platform 4 by means of the plurality of rollers 6, which saves manpower.
[0040] Example 3
[0041] On the basis of Example 1 or 2, the surface of the screw 18 and the surface of the positioning plate 17 facing away from the screw 18 are both provided with an anti-slip layer. The surface of the screw 18 is provided with an anti-slip layer. Rotating the rotating wheel 19 drives the screw 18 to rotate, so that the screw 18 moves and drives the positioning plate 17 to move. The piezoelectric energy harvester is positioned in cooperation with the anti-slip layer on the positioning plate 17 to make it more stable during vibration, avoid affecting the test data, and make the error of the performance measurement data smaller.
[0042] Example 4
[0043] On the basis of Example 3, the number of the spring dampers 2 is four, and the four spring dampers 2 are all fixedly connected to the top of the test bench 1 .
[0044] Example 5
[0045] Based on Example 3, the connection method between the eccentric wheel 12 and the output shaft of the reducer 9 is: key connection; specifically, the key connection is achieved by installing a key in the keyway on the output shaft of the reducer and the keyway in the eccentric wheel, which can effectively transmit torque and allow a certain degree of axial movement, and is suitable for applications such as eccentric wheels that require frequent rotation.
[0046] The connection mode between the eccentric wheel 12 and the rotating shaft 13 is:
[0047] Use a bearing connection, especially a ball bearing or roller bearing. This type of bearing supports the rotational movement between the eccentric and the shaft while reducing wear and heat caused by friction.
[0048] The connection mode between the rotating shaft 13 and the supporting plate 11 is:
[0049] A bearing seat is used in the support plate 11 to fix the rotating shaft 13, and a deep groove ball bearing can be used inside the bearing seat to reduce rotational friction and support higher axial and radial loads.
[0050] The connection mode between the rotating shaft 13 and the rotating plate 14 is as follows:
[0051] The shaft sleeve connection is adopted, the shaft sleeve is fixed on the rotating shaft 13, and the rotating plate 14 is locked by fasteners such as screws to ensure synchronous and reliable rotation.
[0052] The connection mode between the rotating plate 14 and the rotating shaft 2 15 is as follows:
[0053] A hinge connection or an axle pin connection is used. This connection method allows a certain relative movement between the rotating plate 14 and the rotating shaft 2 15, which is particularly important for coping with dynamic load changes caused by vibration.
[0054] The connection mode between the second rotating shaft 15 and the top plate 16 is:
[0055] Use flange connection. The flange connection is matched with each other through flange plates and fastened with bolts, which can provide a strong and reliable rotation connection suitable for supporting the reciprocating movement of the top plate.
Claims
1. A simulation device for testing a piezoelectric energy harvester, characterized in that: The invention comprises a test bench (1), wherein a plurality of spring dampers (2) are evenly arranged on the top of the test bench (1), a positioning platform (4) is fixedly connected to the tops of the plurality of spring dampers (2), a simulated vibration mechanism is fixed on the test bench (1) below the positioning platform (4), and a positioning mechanism for fixing a piezoelectric energy harvester to be simulated on the positioning platform (4) is also arranged on the positioning platform (4).
2. The simulation device for testing piezoelectric energy harvesters according to claim 1, characterized in that: The simulated vibration mechanism comprises a mounting plate (7) fixed on the test bench (1), a driving motor (8) being fixedly arranged on the top of the mounting plate (7), an output shaft of the driving motor (8) being fixedly connected to a reducer (9), a support plate (11) being fixed on an end of the mounting plate (7) away from the driving motor (8), an output shaft of the reducer (9) passing through the support plate (11) and being fixedly connected to an eccentric wheel (12), and the eccentric wheel (12) being fixedly connected to the output shaft of the reducer (9) away from the support plate (11). One end of the support plate (11) is also rotatably connected to a rotating shaft (13), and the rotating shaft (13) is parallel to the output shaft of the reducer (9). The end of the rotating shaft (13) away from the support plate (11) is also rotatably connected to a rotating plate (14). The end of the rotating plate (14) away from the rotating shaft (13) is rotatably connected to a rotating shaft (15) parallel to the rotating shaft (13). The rotating shaft (15) is rotatably connected to a top plate (16), and the upper surface of the top plate (16) is fixedly connected to the lower surface of the positioning platform (4).
3. The simulation device for testing piezoelectric energy harvester according to claim 2, characterized in that: A bracket (10) is fixed on the mounting plate (7), and the reducer (9) is fixed on the mounting plate (7) via the bracket (10).
4. The simulation device for testing piezoelectric energy harvesters according to claim 2, characterized in that: The output shaft of the reducer (9) is rotatably connected in the support plate (11) via a bearing.
5. The simulation device for testing piezoelectric energy harvester according to claim 2, characterized in that: A connecting ear (20) is rotatably connected to the second rotating shaft (15), and the top plate (16) is fixed on the connecting ear (20).
6. The simulation device for testing piezoelectric energy harvester according to claim 1, characterized in that: The positioning platform (4) is configured as a rectangular plate frame structure with an opening on the top and a side, the positioning mechanism is arranged on a side wall of the positioning platform (4) adjacent to the open side, the top of the test platform (1) is fixedly connected to a limiting plate (3), the number of the limiting plates (3) is two and they are respectively located below two sides adjacent to the open side of the positioning platform (4).
7. The simulation device for testing a piezoelectric energy harvester according to claim 6, characterized in that: The positioning mechanism comprises a screw rod (18) connected to the side wall of the positioning platform (4) by means of a thread, one end of the screw rod (18) is located inside the positioning platform (4) and is rotatably connected to a positioning plate (17), and the other end of the screw rod (18) is located outside the positioning platform (4) and is fixedly connected to a rotating wheel (19).
8. The simulation device for testing a piezoelectric energy harvester according to claim 7, characterized in that: The surface of the screw rod (18) and the surface of the positioning plate (17) away from the screw rod (18) are both provided with an anti-slip layer.
9. The simulation device for testing a piezoelectric energy harvester according to claim 6, characterized in that: A transport roller mechanism is also commonly connected between the inner surface of one side of the opening of the positioning platform (4) and the test platform (1).
10. The simulation device for testing a piezoelectric energy harvester according to claim 9, characterized in that: The transport roller mechanism comprises inclined plates (5) fixed to the two ends of the bottom side surface of one side of the opening of the positioning platform (4); the other end of the inclined plate (5) is fixed to a corresponding position of the test platform (1); a plurality of rotating rollers (6) are connected to and rotatably connect the two inclined plates (5); and a transition plate (21) is also connected between the two inclined plates (5) and the inner surface of the bottom of one side of the opening of the positioning platform (4).