A vibration energy elimination system

Abstract

The present invention discloses a vibration energy elimination system, which relates to the technical field of energy elimination. The upper and lower ends of each first longitudinal spring are respectively hinged to the upper platform and the lower platform. The connecting component includes an upper connecting rod, a lower connecting rod and a horizontal connecting plate. The active vibration damping unit includes a voice coil motor, a controller and a feedback sensor. The energy harvesting unit includes an electrode rod, a friction block, a first dielectric layer, a second dielectric layer, an energy harvesting circuit, two transverse springs and two stoppers. The upper end of the voice coil motor is connected to the horizontal connecting plate, and the lower end of the voice coil motor is connected to the friction block. The upper and lower ends of the second longitudinal spring are respectively hinged to the horizontal connecting plate and the friction block. The electrode rod is slidably sleeved in the friction block, the transverse spring is sleeved on the electrode rod, the first dielectric layer is coated on the electrode rod, the second dielectric layer is coated on the transverse spring, and the first dielectric layer and the second dielectric layer can generate electricity by friction. The system has a simple and compact structure, small volume and light weight, and improves the vibration energy elimination efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of energy elimination, and particularly to a vibration energy elimination system. Background Art

[0002] Energy exists widely in many different forms. Classified according to different motion forms of substances, energy can be divided into mechanical energy, internal energy, electrical energy, radiant energy, light energy, biological energy, etc. Different forms of energy can be converted into each other through physical effects or chemical reactions. However, not all forms of energy are beneficial. The existence of vibration, which is a form of mechanical energy, is disadvantageous for some precision instruments. In order to reduce or eliminate its adverse effects, vibration energy needs to be converted into other beneficial forms of energy. For example, the patent with the Chinese patent authorization publication number CN108372941B provides a space debris capture device with energy absorption function. This device uses the method of passive vibration energy absorption to eliminate vibration and can achieve space debris capture and vibration energy absorption. However, it uses only one method to eliminate vibration energy, resulting in low efficiency. How to improve the efficiency of vibration energy elimination has become a technical problem to be solved. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a vibration energy elimination system, which has a simple and compact structure, small volume, and light weight, and improves the efficiency of vibration energy elimination.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a vibration energy elimination system, which includes an upper platform, a lower platform, a connection component, an active vibration damping unit, an energy harvesting unit, two second longitudinal springs and a plurality of first longitudinal springs. The upper and lower ends of each of the first longitudinal springs are respectively hinged to the upper platform and the lower platform, and the plurality of first longitudinal springs are arranged non-coplanarly. The connection component includes an upper connecting rod, a lower connecting rod and a horizontal connecting plate. The upper end of the upper connecting rod is fixed to the lower part of the upper platform, the lower end of the lower connecting rod is fixed to the upper part of the lower platform, and the horizontal connecting plate is fixed to the upper end of the lower connecting rod. The active vibration damping unit includes a voice coil motor, a controller and a feedback sensor. The feedback sensor is arranged on the upper platform, and both the feedback sensor and the voice coil motor are connected to the controller. The energy harvesting unit includes an electrode rod, a friction block, a first dielectric layer, a second dielectric layer, an energy harvesting circuit, two lateral springs and two stoppers. The upper end of the voice coil motor is connected to the horizontal connecting plate, and the lower end of the voice coil motor is connected to the friction block. The upper and lower ends of one of the second longitudinal springs are respectively hinged to the front side of the horizontal connecting plate and the friction block, and the upper and lower ends of the other second longitudinal spring are respectively hinged to the rear side of the horizontal connecting plate and the friction block. The electrode rod is slidably sleeved in the friction block, and a stopper is arranged at each end of the electrode rod. One of the stoppers is connected to the lower end of the upper connecting rod. Both of the lateral springs are sleeved on the electrode rod, and the two lateral springs are respectively located on both sides of the friction block. The electrode rod, the lateral springs and the stoppers are all made of conductive materials. The first dielectric layer is coated on the electrode rod, and the second dielectric layer is coated on the lateral springs. The first dielectric layer and the second dielectric layer can generate electricity by friction. The electrode rod and the lateral springs are both electrically connected to the energy harvesting circuit.

[0006] Preferably, at least two upper cylindrical rods are arranged on the front side and the rear side of the upper platform, and corresponding lower cylindrical rods are arranged on the front side and the rear side of the lower platform. A first connection rotating pair is arranged at each of the upper and lower ends of each of the first longitudinal springs. The first connection rotating pairs at the upper ends of the first longitudinal springs are rotatably sleeved on one of the upper cylindrical rods, and the first connection rotating pairs at the lower ends of the first longitudinal springs are rotatably sleeved on one of the lower cylindrical rods.

[0007] Preferably, an upper limit block is arranged at the outer end of each of the upper cylindrical rods, and each upper limit block is used to limit the axial movement of the first connection rotating pair at one end; a lower limit block is arranged at the outer end of each of the lower cylindrical rods, and each lower limit block is used to limit the axial movement of the first connection rotating pair at the other end.

[0008] Preferably, a first cylindrical rod is respectively arranged on the front and rear sides of the horizontal connecting plate. The friction block includes a horizontal sleeve, a motor mounting block, two connecting columns, and two second cylindrical rods. The motor mounting block is arranged on the upper part of the horizontal sleeve. The upper end of the voice coil motor is connected to the lower surface of the horizontal connecting plate, and the lower end of the voice coil motor is connected to the motor mounting block. The electrode rod is slidably sleeved in the horizontal sleeve. The two connecting columns are respectively arranged on the front and rear sides of the horizontal sleeve. The connecting columns are perpendicular to the electrode rod. One second cylindrical rod is arranged at one end of each connecting column away from the horizontal sleeve. A second connecting rotating pair is respectively arranged at the upper and lower ends of each second longitudinal spring. The second connecting rotating pair at the upper end of each second longitudinal spring is rotatably sleeved on one first cylindrical rod, and the second connecting rotating pair at the lower end of each second longitudinal spring is rotatably sleeved on one second cylindrical rod.

[0009] Preferably, a first limiting block is arranged at the outer end of each first cylindrical rod, and each first limiting block is used to limit the axial movement of the second connecting rotating pair at the upper end. A second limiting block is arranged at the outer end of each second cylindrical rod, and each second limiting block is used to limit the axial movement of the second connecting rotating pair at the lower end.

[0010] Preferably, the voice coil motor includes a voice coil motor stator, a voice coil motor mover, and an output block. The lower part of the voice coil motor stator is fixed on the motor mounting block. An annular groove is arranged at the upper part of the voice coil motor stator. The voice coil motor mover is inserted into the annular groove. The output block is fixed on the upper part of the voice coil motor mover. The output block is fixed on the lower surface of the horizontal connecting plate. The voice coil motor mover is connected to the controller.

[0011] Preferably, a first groove is arranged on the lower surface of the horizontal connecting plate. The output block is fixed in the first groove. A second groove and a mounting post are arranged at the upper part of the motor mounting block, and the mounting post is located at the center of the second groove. The voice coil motor stator is sleeved on the mounting post and fixed in the second groove.

[0012] Preferably, a first receiving groove is arranged on each side of the horizontal sleeve. A second receiving groove is arranged on the inner side of each blocking block. The two ends of each transverse spring can be respectively located in the first receiving groove and the second receiving groove.

[0013] Preferably, the electrode rod, the transverse spring, and the blocking block are all made of metal materials.

[0014] Preferably, four first longitudinal springs are arranged, and the four first longitudinal springs are arranged in a rectangular layout.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The vibration energy elimination system of the present invention includes an upper platform, a lower platform, a connection component, an active vibration damping unit, an energy harvesting unit, two second longitudinal springs and a plurality of first longitudinal springs. The active vibration damping unit includes a voice coil motor, a controller and a feedback sensor. The feedback sensor collects vibration signals and transmits them to the controller. After signal processing by the controller, the signals are output to the voice coil motor, and the voice coil motor generates force to counteract the vibration, so as to achieve the purpose of eliminating vibration energy. The energy harvesting unit includes an electrode rod, a friction block, a first dielectric layer, a second dielectric layer, an energy harvesting circuit and two transverse springs. When the system works, relative movement occurs between the electrode rod and the friction block and the transverse springs, generating friction. The vibration energy is converted into heat energy, and the heat energy is dissipated through heat conduction of air. At the same time, a potential difference is generated due to the relative sliding between the first dielectric layer on the electrode rod and the second dielectric layer on the transverse spring. Electrons in the energy harvesting circuit flow due to the existence of the potential difference, converting the vibration energy into electrical energy. This electrical energy can be stored or directly supplied for use by the feedback sensor, improving the energy utilization rate. Both of these methods have an effect of eliminating vibration energy. In the present invention, vibration energy is eliminated in three ways. First, the active vibration damping unit reduces the generation of vibration energy. Part of the residual vibration energy is dissipated as heat energy, and part is converted into electrical energy for collection and utilization, improving the vibration energy elimination efficiency. And the structure is based on tensegrity design, having the advantages of simple and compact structure, small volume and light weight. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a three-dimensional structure diagram of the vibration energy elimination system provided by the present invention;

[0019] Figure 2 It is a 1 / 4 sectional view of the vibration energy elimination system provided by the present invention;

[0020] Figure 3 It is a half sectional view of the vibration energy elimination system provided by the present invention;

[0021] Figure 4 It is a structural schematic diagram of the second longitudinal spring and the second connecting rotating pair in the vibration energy elimination system provided by the present invention;

[0022] Figure 5This is the working principle diagram of the active vibration damping unit in the vibration energy elimination system provided by the present invention;

[0023] Figure 6 This is the structural schematic diagram of the friction block, electrode rod, lateral spring and stopper in the vibration energy elimination system provided by the present invention;

[0024] Figure 7 This is the working principle diagram of the energy harvesting unit in the vibration energy elimination system provided by the present invention;

[0025] Figure 8 This is the circuit diagram of the energy harvesting unit in the vibration energy elimination system provided by the present invention.

[0026] Explanation of reference numerals: 100, vibration energy elimination system; 1, upper platform; 2, lower platform; 3, upper connecting rod; 4, lower connecting rod; 5, horizontal connecting plate; 6, voice coil motor; 61, voice coil motor stator; 62, voice coil motor mover; 63, output block; 7, feedback sensor; 8, friction block; 81, horizontal sleeve; 82, motor mounting block; 83, connecting column; 84, second cylindrical rod; 85, second limit block; 86, second groove; 87, mounting column; 88, first receiving groove; 9, electrode rod; 10, lateral spring; 11, stopper; 12, second receiving groove; 13, first longitudinal spring; 14, first connecting rotating pair; 15, upper limit block; 16, lower limit block; 17, second longitudinal spring; 18, second connecting rotating pair; 181, second connecting block; 182, second connecting ring; 19, first cylindrical rod; 20, first limit block; 21, controller; 22, first dielectric layer; 23, second dielectric layer; 24, energy harvesting circuit; 25, rectifier bridge; 26, inductor; 27, capacitor; 28, electrical appliance component. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The purpose of the present invention is to provide a vibration energy elimination system, which has a simple and compact structure, small volume, light weight, and improves the vibration energy elimination efficiency.

[0029] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0030] As Figures 1-8As shown in the figure, this embodiment provides a vibration energy elimination system 100, which includes an upper platform 1, a lower platform 2, a connection component, an active vibration damping unit, an energy harvesting unit, two second longitudinal springs 17, and multiple first longitudinal springs 13. The upper and lower ends of each first longitudinal spring 13 are respectively hinged to the upper platform 1 and the lower platform 2. The first longitudinal springs 13 are provided with at least four, and the multiple first longitudinal springs 13 are arranged non-coplanarly. The connection component includes an upper connecting rod 3, a lower connecting rod 4, and a horizontal connecting plate 5. The upper end of the upper connecting rod 3 is fixed to the lower part of the upper platform 1, and the upper connecting rod 3 is perpendicular to the upper platform 1. The lower end of the lower connecting rod 4 is fixed to the upper part of the lower platform 2, and a horizontal connecting plate 5 is fixed to the upper end of the lower connecting rod 4. The lower connecting rod 4 is perpendicular to the lower platform 2, and the horizontal connecting plate 5 is parallel to the lower platform 2. The lower connecting rod 4 is provided with two. The active vibration damping unit includes a voice coil motor 6, a controller 21, and a feedback sensor 7. The feedback sensor 7 is arranged on the upper platform 1, and both the feedback sensor 7 and the voice coil motor 6 are connected to the controller 21. In this embodiment, the feedback sensor 7 is arranged on the upper surface of the upper platform 1. The upper platform 1, the horizontal connecting plate 5, the energy harvesting unit, and the lower platform 2 are arranged in sequence from top to bottom. The energy harvesting unit includes an electrode rod 9, a friction block 8, a first dielectric layer 22, a second dielectric layer 23, an energy harvesting circuit 24, two lateral springs 10, and two stoppers 11. The upper end of the voice coil motor 6 is connected to the horizontal connecting plate 5, and the lower end of the voice coil motor 6 is connected to the friction block 8. The upper and lower ends of one second longitudinal spring 17 are respectively hinged to the front side of the horizontal connecting plate 5 and the friction block 8, and the upper and lower ends of the other second longitudinal spring 17 are respectively hinged to the rear side of the horizontal connecting plate 5 and the friction block 8. The electrode rod 9 is slidably sleeved in the friction block 8, and a stopper 11 is arranged at each end of the electrode rod 9. One stopper 11 is connected to the lower end of the upper connecting rod 3. The two lateral springs 10 are both sleeved on the electrode rod 9, and the two lateral springs 10 are respectively located on both sides of the friction block 8. The electrode rod 9, the lateral springs 10, and the stoppers 11 are all made of conductive materials. The first dielectric layer 22 is coated on the electrode rod 9, and the second dielectric layer 23 is coated on the lateral springs 10. The first dielectric layer 22 and the second dielectric layer 23 can generate electricity by friction. The electrode rod 9 and the lateral springs 10 are both electrically connected to the energy harvesting circuit 24. Specifically, the stopper 11 in this embodiment can conduct electricity, and the electrical connection with the electrode rod 9 can also be realized by connecting one end of the energy harvesting circuit 24 to the stopper 11.

[0031] Through the active control technology, the feedback sensor 7 collects vibration signals and transmits them to the controller 21. After processing the signals, the controller 21 outputs them to the voice coil motor 6. The voice coil motor 6 generates force to counteract the vibration, thereby achieving the purpose of eliminating vibration energy. The energy harvesting unit includes an electrode rod 9, a friction block 8, a first dielectric layer 22, a second dielectric layer 23, an energy harvesting circuit 24, and two lateral springs 10. When the system operates, relative movement occurs between the electrode rod 9 and the friction block 8 and the lateral springs 10, generating friction. The vibration energy is converted into heat energy, and the heat energy is dissipated through heat conduction of the air. At the same time, a potential difference is generated due to the relative sliding between the first dielectric layer 22 on the electrode rod 9 and the second dielectric layer 23 on the lateral spring 10. Electrons in the energy harvesting circuit 24 flow due to the potential difference, converting the vibration energy into electrical energy. This electrical energy can be stored or directly supplied for use by the feedback sensor 7, improving the energy utilization rate. Both of these methods have an effect of eliminating vibration energy. In this embodiment, vibration energy is eliminated through three methods. First, the active vibration damping unit reduces the generation of vibration energy. A part of the residual vibration energy is dissipated as heat energy, and a part is converted into electrical energy for collection and utilization, improving the vibration energy elimination efficiency. In this embodiment, the nano-friction power generation technology is combined with the active control technology. The advantage is that existing power generation technology devices are relatively large and inconvenient to carry, while the nano-friction power generation technology only requires a small device to complete power generation. At the same time, the structure in this embodiment is based on tensegrity design. On the one hand, when working, the relative movement mode between the electrode rod 9 and the friction block 8 and the lateral springs 10 is a sliding planar contact, which is suitable for the operation of the nano-friction power generation technology. On the other hand, it has the advantages of the tensegrity structure, with good load-bearing capacity, and at the same time has the advantages of simple and compact structure, small volume, and light weight.

[0032] At least two upper cylindrical rods are provided on the front side and the rear side of the upper platform 1. Corresponding lower cylindrical rods are provided on the front side and the rear side of the lower platform 2, which are parallel to the upper cylindrical rods. The upper cylindrical rods and the lower cylindrical rods are both perpendicular to the electrode rod 9. A first connecting rotating pair 14 is provided at both the upper and lower ends of each first longitudinal spring 13. The first connecting rotating pair 14 at the upper end of each first longitudinal spring 13 is rotatably sleeved on an upper cylindrical rod, and the first connecting rotating pair 14 at the lower end of each first longitudinal spring 13 is rotatably sleeved on a lower cylindrical rod. In this embodiment, the first connecting rotating pair 14 includes a first connecting block and a first connecting ring provided at one end of the first connecting block. The first connecting ring is used for rotatably sleeving on the upper cylindrical rod or the lower cylindrical rod. A first installation groove is provided at the end of the first connecting block away from the first connecting ring, and the end of the first longitudinal spring 13 is fixed in the first installation groove.

[0033] An upper limit block 15 is provided at the outer end of each upper cylindrical rod. Each upper limit block 15 is used to limit the axial movement of a first connecting rotating pair 14 at the upper end. In this embodiment, the upper limit block 15 is an upper cylindrical block, and the outer diameter of the upper cylindrical block is greater than the outer diameter of the upper cylindrical rod. A lower limit block 16 is provided at the outer end of each lower cylindrical rod. Each lower limit block 16 is used to limit the axial movement of a first connecting rotating pair 14 at the lower end. In this embodiment, the lower limit block 16 is a lower cylindrical block, and the outer diameter of the lower cylindrical block is greater than the outer diameter of the lower cylindrical rod.

[0034] As Figure 2 and Figure 6 shown, a first cylindrical rod 19 is respectively provided on the front and rear sides of the horizontal connecting plate 5. The friction block 8 includes a horizontal sleeve 81, a motor mounting block 82, two connecting columns 83 and two second cylindrical rods 84. The motor mounting block 82 is arranged on the upper part of the horizontal sleeve 81. The upper end of the voice coil motor 6 is connected to the lower surface of the horizontal connecting plate 5, and the lower end of the voice coil motor 6 is connected to the motor mounting block 82. The electrode rod 9 is slidably sleeved in the horizontal sleeve 81. Two connecting columns 83 are respectively arranged on the front and rear sides of the horizontal sleeve 81, that is, both two connecting columns 83 are arranged along the radial direction of the horizontal sleeve 81. The connecting column 83 is perpendicular to the electrode rod 9. A second cylindrical rod 84 is provided at one end of each connecting column 83 away from the horizontal sleeve 81; the first cylindrical rod 19 and the second cylindrical rod 84 are parallel to each other, and both the first cylindrical rod 19 and the second cylindrical rod 84 are perpendicular to the electrode rod 9. A second connecting rotating pair 18 is respectively provided at the upper and lower ends of each second longitudinal spring 17. The second connecting rotating pair 18 at the upper end of each second longitudinal spring 17 is rotatably sleeved on a first cylindrical rod 19, and the second connecting rotating pair 18 at the lower end of each second longitudinal spring 17 is rotatably sleeved on a second cylindrical rod 84. As Figure 4 shown, in this embodiment, the second connecting rotating pair 18 includes a second connecting block 181 and a second connecting ring 182 arranged at one end of the second connecting block 181. The second connecting ring 182 is used to be rotatably sleeved on the upper cylindrical rod or the lower cylindrical rod. A second installation groove is provided at one end of the second connecting block 181 away from the second connecting ring 182, and the end of the second longitudinal spring 17 is fixed in the second installation groove.

[0035] A first limit block 20 is provided at the outer end of each first cylindrical rod 19. Each first limit block 20 is used to limit the axial movement of a second connecting rotating pair 18 at the upper end. In this embodiment, the first limit block 20 is a first cylindrical block, and the outer diameter of the first cylindrical block is greater than the outer diameter of the first cylindrical rod 19. A second limit block 85 is provided at the outer end of each second cylindrical rod 84. Each second limit block 85 is used to limit the axial movement of a second connecting rotating pair 18 at the lower end. In this embodiment, the second limit block 85 is a second cylindrical block, and the outer diameter of the second cylindrical block is greater than the outer diameter of the second cylindrical rod 84.

[0036] As Figure 2 and Figure 3 shown, the voice coil motor 6 includes a voice coil motor stator 61, a voice coil motor mover 62, and an output block 63. The lower part of the voice coil motor stator 61 is fixed to the motor mounting block 82. An annular groove is provided in the upper part of the voice coil motor stator 61. The voice coil motor mover 62 is inserted into the annular groove. The output block 63 is fixed to the upper part of the voice coil motor mover 62. The output block 63 is fixed to the lower surface of the horizontal connecting plate 5. The voice coil motor mover 62 is connected to the controller 21.

[0037] In this specific embodiment, the voice coil motor stator 61 is a cylinder with an annular groove dug out. Its material is high-permeability steel, which can form a magnetic circuit. The strong magnets at the bottom of the annular groove are fixedly placed in a circular array. The voice coil motor mover 62 includes a coil and a coil fixing frame. The coil is wound around the coil fixing frame. The coil fixing frame is inserted into the annular groove. The coil is connected to the controller 21. The voice coil motor mover 62 is inserted into the annular groove and placed concentrically with the voice coil motor stator 61. The coil on the voice coil motor mover 62 is subjected to a force in the magnetic field of the voice coil motor stator 61 to generate a force output. Therefore, by controlling the drive current in the coil through the controller 21, the output force of the voice coil motor 6 can be controlled.

[0038] As Figure 5As shown, it is a schematic diagram of the vibration damping principle of the active vibration damping unit. M is the mass of the upper platform 1, m is the mass of the lower platform 2, K is the equivalent stiffness of the system, C is the equivalent damping of the system, x0 is the vibration displacement of the lower platform 2, and x1 is the vibration displacement of the upper platform 1. When excited by the outside world, the vibration is transmitted to the upper platform 1. Taking the downward and leftward movement trend of the upper platform 1 as an example for explanation, at this time, the upper connecting rod 3 and the electrode rod 9 have a downward and leftward movement trend, and the friction block 8 has a downward movement trend. In the vertical direction, the vibration suppression is mainly completed by the active vibration damping unit. The feedback sensor 7 collects the vibration signal of the upper platform 1 and filters out the redundant noise signals, and then transmits it to the controller 21. The controller 21 has a series of algorithms, which can calculate the signal collected by the feedback sensor 7, filter out the useless noise signals, and then generate a new signal to act on the voice coil motor 6. After receiving the signal, the voice coil motor 6 outputs force to suppress the vibration, that is, the voice coil motor 6 generates an upward force, and this upward force acts on the friction block 8, the electrode rod 9, the upper connecting rod 3 and the upper platform 1, so as to suppress the vibration in the vertical direction. Appropriate control algorithms can be selected according to the actual application scenario, such as the classic PID control algorithm. When excited in the horizontal direction, the electrode rod 9 will move leftward in the horizontal direction along the friction block 8, and the lateral spring 10 sleeved on the electrode rod 9 is stressed and generates an elastic force, which generates a rightward force on the electrode rod 9. This rightward force acts on the electrode rod 9, the upper connecting rod 3 and the upper platform 1, and then suppresses the horizontal vibration. It can be seen that under the combined action of the voice coil motor 6 and the spring, an upward and rightward force is applied to the upper platform 1, thus achieving the vibration damping effect, that is, reducing the vibration through the active vibration damping unit and the lateral spring 10, and then eliminating part of the vibration energy. This is the first method of eliminating vibration energy.

[0039] When excited, relative movement occurs between the electrode rod 9, the lateral spring 10 and the friction block 8, and the heat generated by friction is the second method of eliminating vibration energy in this embodiment. In the third method of eliminating vibration energy, as Figure 7 shown, the electrode rod 9 and the lateral spring 10 are two electrodes. The first dielectric layer 22 and the second dielectric layer 23 will move along with the electrode rod 9 and the lateral spring 10 respectively. When sliding horizontally, charge transfer will occur between the first dielectric layer 22 and the second dielectric layer 23, resulting in a potential difference between the two. In the energy harvesting circuit 24, electrons flow between the two electrodes under the drive of the potential difference to balance this potential difference. The energy harvesting circuit 24 can store the harvested electrical energy or supply it to the feedback sensor 7 in the first method of eliminating vibration energy for use, so that the energy can be reused.

[0040] As Figure 8As shown, the energy harvesting circuit 24 includes a rectifier bridge 25, an inductor 26, a capacitor 27, and an electrical device 28. The second terminal of the rectifier bridge 25 is electrically connected to the lateral spring 10, and the fourth terminal of the rectifier bridge 25 is electrically connected to the electrode rod 9. The first terminal of the rectifier bridge 25, the capacitor 27, the inductor 26, and the third terminal of the rectifier bridge 25 are connected in sequence, and the electrical device 28 is connected in parallel with the capacitor 27. The electrical device 28 in this embodiment may be the feedback sensor 7.

[0041] As Figure 2 and Figure 3 As shown, a first groove is provided on the lower surface of the horizontal connecting plate 5, and the output block 63 is fixed in the first groove; a second groove 86 and a mounting post 87 are provided on the upper part of the motor mounting block 82, and are located at the center of the second groove 86. The voice coil motor stator 61 is sleeved on the mounting post 87 and fixed in the second groove 86. The second groove 86 is a circular groove, the mounting post 87 is cylindrical, and the mounting post 87 and the second groove 86 are coaxially arranged.

[0042] One first receiving groove 88 is provided on each side of the horizontal sleeve 81, one second receiving groove 12 is provided on the inner side of each stopper 11, and both ends of each lateral spring 10 can be respectively located in the first receiving groove 88 and the second receiving groove 12. The electrode rod 9 is cylindrical, a circular through hole for mounting the electrode rod 9 is provided in the middle of the horizontal sleeve 81, and both the first receiving groove 88 and the second receiving groove 12 are circular ring grooves.

[0043] Specifically, the electrode rod 9, the lateral spring 10, and the stopper 11 are all made of metal materials; the first dielectric layer 22 can be made of materials such as nylon, ethyl cellulose, and triethylene glycol that are easy to lose electrons, and the second dielectric layer 23 can be made of materials such as polytetrafluoroethylene and polyacrylonitrile that are easy to gain electrons. It is only necessary that there is a difference in the triboelectric series between the materials of the first dielectric layer 22 and the second dielectric layer 23. The feedback sensor 7 in this embodiment is a force sensor.

[0044] In this specific embodiment, four first longitudinal springs 13 are provided, and the four first longitudinal springs 13 are arranged in a rectangle, that is, two first longitudinal springs 13 are provided on the front side of the upper platform 1 and the lower platform 2, and two first longitudinal springs 13 are provided on the rear side of the upper platform 1 and the lower platform 2. In this embodiment, both the upper platform 1 and the lower platform 2 are rectangular plates.

[0045] In this specification, specific examples are used to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A vibration energy elimination system, characterized in that, It includes an upper platform, a lower platform, a connecting component, an active vibration damping unit, an energy harvesting unit, two second longitudinal springs and a plurality of first longitudinal springs. The upper and lower ends of each of the first longitudinal springs are respectively hinged to the upper platform and the lower platform, and the plurality of first longitudinal springs are arranged non-coplanarly. The connecting component includes an upper connecting rod, a lower connecting rod and a horizontal connecting plate. The upper end of the upper connecting rod is fixed to the lower part of the upper platform, the lower end of the lower connecting rod is fixed to the upper part of the lower platform, and the horizontal connecting plate is fixed to the upper end of the lower connecting rod; The active vibration damping unit includes a voice coil motor, a controller and a feedback sensor. The feedback sensor is arranged on the upper platform, and both the feedback sensor and the voice coil motor are connected to the controller; The energy harvesting unit includes an electrode rod, a friction block, a first dielectric layer, a second dielectric layer, an energy harvesting circuit, two transverse springs and two stoppers. The upper end of the voice coil motor is connected to the horizontal connecting plate, and the lower end of the voice coil motor is connected to the friction block. The upper and lower ends of one of the second longitudinal springs are respectively hinged to the front side of the horizontal connecting plate and the friction block, and the upper and lower ends of the other second longitudinal spring are respectively hinged to the rear side of the horizontal connecting plate and the friction block. The electrode rod is slidably sleeved in the friction block, and a stopper is arranged at each end of the electrode rod. One of the stoppers is connected to the lower end of the upper connecting rod. Both of the transverse springs are sleeved on the electrode rod, and the two transverse springs are respectively located on both sides of the friction block. The electrode rod, the transverse springs and the stoppers are all made of conductive materials. The first dielectric layer is coated on the electrode rod, and the second dielectric layer is coated on the transverse springs. The first dielectric layer and the second dielectric layer can generate electricity by friction. The electrode rod and the transverse springs are both electrically connected to the energy harvesting circuit.

2. The vibration energy elimination system according to claim 1, characterized in that, At least two upper cylindrical rods are arranged on the front side and the rear side of the upper platform, and lower cylindrical rods corresponding to the upper cylindrical rods one by one are arranged on the front side and the rear side of the lower platform. A first connecting rotating pair is arranged at each of the upper and lower ends of each of the first longitudinal springs. The first connecting rotating pairs at the upper ends of the first longitudinal springs are all rotatably sleeved on one of the upper cylindrical rods, and the first connecting rotating pairs at the lower ends of the first longitudinal springs are all rotatably sleeved on one of the lower cylindrical rods.

3. The vibration energy elimination system according to claim 2, characterized in that, An upper limit block is arranged at the outer end of each of the upper cylindrical rods, and each of the upper limit blocks is used to limit the axial movement of the first connecting rotating pair at one upper end; A lower limit block is arranged at the outer end of each of the lower cylindrical rods, and each of the lower limit blocks is used to limit the axial movement of the first connecting rotating pair at one lower end.

4. The vibration energy elimination system according to claim 1, characterized in that, A first cylindrical rod is respectively arranged on the front and rear sides of the horizontal connecting plate. The friction block comprises a horizontal sleeve, a motor mounting block, two connecting columns and two second cylindrical rods. The motor mounting block is arranged on the upper part of the horizontal sleeve. The upper end of the voice coil motor is connected to the lower surface of the horizontal connecting plate, and the lower end of the voice coil motor is connected to the motor mounting block. The electrode rod is slidably sleeved in the horizontal sleeve. The two connecting columns are respectively arranged on the front and rear sides of the horizontal sleeve. The connecting columns are perpendicular to the electrode rod. One second cylindrical rod is arranged at one end of each connecting column away from the horizontal sleeve. A second connecting rotating pair is respectively arranged at the upper and lower ends of each second longitudinal spring. The second connecting rotating pair at the upper end of each second longitudinal spring is rotatably sleeved on one first cylindrical rod, and the second connecting rotating pair at the lower end of each second longitudinal spring is rotatably sleeved on one second cylindrical rod.

5. The vibration energy elimination system according to claim 4, characterized in that, A first limiting block is arranged at the outer end of each first cylindrical rod. Each first limiting block is used for limiting the axial movement of the second connecting rotating pair at one upper end. A second limiting block is arranged at the outer end of each second cylindrical rod. Each second limiting block is used for limiting the axial movement of the second connecting rotating pair at one lower end.

6. The vibration energy elimination system according to claim 4, characterized in that, The voice coil motor comprises a voice coil motor stator, a voice coil motor mover and an output block. The lower part of the voice coil motor stator is fixed on the motor mounting block. An annular groove is arranged at the upper part of the voice coil motor stator. The voice coil motor mover is inserted into the annular groove. The output block is fixed on the upper part of the voice coil motor mover. The output block is fixed on the lower surface of the horizontal connecting plate. The voice coil motor mover is connected to the controller.

7. The vibration energy elimination system according to claim 6, characterized in that, A first groove is arranged on the lower surface of the horizontal connecting plate. The output block is fixed in the first groove. A second groove and a mounting column are arranged on the upper part of the motor mounting block, and the mounting column is located at the center of the second groove. The voice coil motor stator is sleeved on the mounting column and fixed in the second groove.

8. The vibration energy elimination system according to claim 4, characterized in that, A first accommodating groove is arranged on each side of the horizontal sleeve. A second accommodating groove is arranged on the inner side of each blocking block. The two ends of each transverse spring can be respectively located in the first accommodating groove and the second accommodating groove.

9. The vibration energy elimination system according to claim 1, characterized in that, The electrode rod, the transverse spring and the blocking block are all made of metal materials.

10. The vibration energy elimination system according to claim 1, characterized in that, The first longitudinal springs are arranged in four, and the four first longitudinal springs are arranged in a rectangular layout.

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