Self-sensing table type shock absorber based on piezoelectric driving

Abstract

The invention relates to the technical field of shock absorbers, and discloses a self-sensing table type shock absorber based on piezoelectric driving, which comprises an upper plate serving as an upper support plate of the table type shock absorber and used for bearing a precise instrument; the base serves as a lower supporting plate of the table type shock absorber and a foundation structure of the shock absorber, and is used for supporting the whole device and being connected with the external environment. The upper adapter plate is used for connecting the upper plate with other components; and the damping mechanism is used for reducing the amplitude of vibration, and the damping mechanism is arranged between the base and the upper adapter plate. According to the self-sensing table type shock absorber based on piezoelectric driving, the piezoelectric mechanism is arranged, and the piezoelectric sensor is used for sensing external vibration and converting the external vibration into an electric signal; the piezoelectric brake can rapidly generate reverse displacement to actively suppress or slow down vibration according to vibration information sensed by the piezoelectric sensor, and due to the high response speed and the wide frequency response range of piezoelectric materials, the piezoelectric brake can effectively resist high-frequency vibration and generate accurate reverse force.

Description

Technical Field

[0001] The invention relates to the technical field of vibration absorbers, and in particular to a self-sensing desktop vibration absorber based on piezoelectric drive. Background Art

[0002] With the continuous advancement of science and technology, the requirements for equipment accuracy in the fields of precision machining, assembly and measurement are also increasing, especially in microscopes and related high-precision measuring instruments. As a representative high-resolution measurement tool, atomic force microscopy (AFM) has developed to nanometer or even sub-nanometer precision. In this high-precision measurement process, the instrument has extremely high requirements for environmental stability, and any small external disturbance may have a significant impact on the measurement results. For example, in an optical microscope, even small vibrations from the equipment itself or the surrounding environment, low-frequency and high-frequency vibrations, may cause image blur or offset, resulting in loss of accuracy. Therefore, in order to ensure that high-resolution instruments can operate stably in an undisturbed environment, high-performance vibration isolation platform technology has become a hot spot for research and application. Modern vibration reduction technology can effectively combat low-frequency and high-frequency vibrations, and provide an ultra-stable working environment for precision instruments by designing advanced vibration reduction systems, thereby improving measurement accuracy and reliability.

[0003] However, although the current vibration reduction platform can effectively isolate most external vibrations, with the continuous improvement of measurement accuracy requirements, the existing technology has not yet been able to fully solve the problem of all vibration sources. In particular, in terms of suppressing high-frequency vibrations, traditional vibration isolation platforms often cannot provide sufficient isolation effects. In addition, existing vibration isolation systems are usually passive and mainly rely on mechanical components such as springs and dampers. These components may become fatigued or worn after long-term use, thus affecting the vibration isolation effect. More importantly, traditional vibration isolation systems can usually only cope with vibrations in a single frequency band, while equipment such as high-precision microscopes may encounter complex vibration environments with multiple frequency bands and multiple sources under different working conditions, which makes it difficult for existing technologies to meet all vibration isolation needs. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a self-sensing desktop vibration absorber based on piezoelectric drive, which solves the problem that the existing vibration isolation technology can isolate some vibrations but is difficult to cope with high-frequency vibrations and multi-band vibrations.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a self-sensing desktop shock absorber based on piezoelectric drive, comprising an upper plate, serving as the upper support plate of the desktop shock absorber, for carrying precision instruments; a base, serving as the lower support plate of the desktop shock absorber, the basic structure of the shock absorber, for supporting the entire device and connecting with the external environment; an upper adapter plate, for connecting the upper plate with other components; a damping mechanism, for reducing the amplitude of vibration, the damping mechanism being arranged between the base and the upper adapter plate; a piezoelectric mechanism, for sensing vibration and converting it into an electrical signal to generate a reverse displacement for active vibration reduction; a regular triangular prism, for supporting and fixing the horizontal piezoelectric mechanism; a force unloading mechanism, for offsetting the impact force; and a recovery mechanism, for absorbing the energy generated by the vibration and converting it into electrical energy storage, thereby providing electrical energy for the piezoelectric mechanism.

[0008] Preferably, the damping mechanism includes a limiting cylinder, which is fixedly connected to the top of the base, one end of a load-bearing spring is fixedly connected to the top of the base, the other end of the load-bearing spring is fixedly connected to a rubber damping member, the outer wall of the limiting cylinder is fixedly connected to an S-shaped copper foil, and damping plates are fixedly connected to both sides of the S-shaped copper foil.

[0009] Preferably, the top of the rubber damping member is fixedly connected to the bottom of the upper adapter plate, and the top of the upper adapter plate is fixedly connected to the bottom of the upper plate.

[0010] Preferably, the piezoelectric mechanism comprises a copper square, a piezoelectric sensor is fixedly connected to the inner wall of the copper square, a piezoelectric brake is fixedly connected to the inner wall of the copper square, and the piezoelectric sensor is located on the top of the piezoelectric brake.

[0011] Preferably, the piezoelectric sensor includes an aluminum seat, which is fixedly connected to the inner wall of the copper square, an aluminum cover is provided at the bottom of the aluminum seat, one end of a small spring is fixedly connected to the inner wall of the aluminum cover, the other end of the small spring is fixedly connected to a mass block, a rubber ring is fixedly connected to the outer wall of the mass block, a disc rubber gasket is fixedly connected to the top of the mass block, and a single-sided piezoelectric sheet is provided on the inner wall of the aluminum seat.

[0012] Preferably, the piezoelectric brake includes a plastic shell, which is fixedly connected to the inner wall of the copper square, the bottom of the plastic shell is fixedly connected to an aluminum cover shell, the inner wall of the plastic shell is fixedly connected to a shuttle-shaped rubber gasket, the outer wall of the shuttle-shaped rubber gasket is fixedly connected to a ring rubber gasket, a pressure gasket loading rack is arranged on the inner wall of the ring rubber gasket, a double-sided piezoelectric sheet is arranged on the inner wall of the pressure gasket loading rack, the shuttle-shaped rubber gasket, the ring rubber gasket, the pressure gasket loading rack and the double-sided piezoelectric sheet are arranged in several groups, the shuttle-shaped rubber gasket, the ring rubber gasket, the pressure gasket loading rack and the double-sided piezoelectric sheet are arranged in a stacked manner, a plastic ring is fixedly connected to the inner wall of the plastic shell, the bottom of the double-sided piezoelectric sheet is fixedly connected to a plastic mover, the bottom of the plastic mover is fixedly connected to a cylindrical pin, the bottom of the cylindrical pin is fixedly connected to a copper sheet, the top of the copper sheet is fixedly connected to one end of a connecting spring, and the other end of the connecting spring is fixedly connected to the outer wall of the plastic mover.

[0013] Preferably, a regular triangular prism is fixedly connected to the top of the base, one end of a piezoelectric mechanism is provided on two side surfaces of the regular triangular prism, and the other end of the piezoelectric mechanism on the regular triangular prism is fixedly connected to an upper adapter plate.

[0014] Preferably, the force unloading mechanism comprises an upper fixed plate, which is fixedly connected to the bottom of the upper adapter plate, a lower fixed plate is fixedly connected to the top of the base, an L-shaped rod is fixedly connected to the bottom of the upper fixed plate, and a C-shaped plate is fixedly connected to the top of the lower fixed plate, the outer wall of the L-shaped rod is fixedly connected to a truncated cone block, the outer wall of the C-shaped plate is fixedly connected to one end of the telescopic tube, and the other end of the telescopic tube is fixedly connected to a sealed cavity block, a non-Newtonian fluid is arranged on the inner wall of the sealed cavity block, the inner wall of the sealed cavity block is piston-connected to the outer wall of the truncated cone block, a return spring is fixedly connected to the inner wall of the telescopic tube, a vent is provided on the top of the telescopic tube, a fixed connecting plate is fixedly connected to the top of the telescopic tube, one end of the fixed spring is fixedly connected to the outer wall of the fixed connecting plate, and the other end of the fixed spring is fixedly connected to a disc block, one end of the telescopic rod is fixedly connected to the top of the disc block, the other end of the telescopic rod is fixedly connected to the outer wall of the fixed connecting plate, and a micro through hole is provided on the outer wall of the disc block.

[0015] Preferably, the recovery mechanism includes a connecting and fixing plate, the connecting and fixing plate is fixedly connected to the outer wall of the base, the outer wall of the connecting and fixing plate is fixedly connected to a battery assembly, the outer wall of the battery assembly is fixedly connected to one end of an electric wire, the other end of the electric wire is fixedly connected to a generator, the output shaft of the generator is fixedly connected to a ratchet part, and the bottom of the L-shaped rod is fixedly connected to a two-way ratchet condition.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a self-sensing desktop vibration absorber based on piezoelectric drive, which has the following beneficial effects:

[0018] 1. The piezoelectric-driven self-sensing desktop shock absorber is set up using a piezoelectric mechanism. The piezoelectric sensor is used to sense external vibrations and convert them into electrical signals. The piezoelectric brake can quickly generate reverse displacement to actively suppress or slow down vibrations based on the vibration information sensed by the piezoelectric sensor. Due to the high response speed and wide frequency response range of piezoelectric materials, the piezoelectric brake can effectively counteract high-frequency vibrations and generate precise reverse force.

[0019] 2. The piezoelectric-driven self-sensing desktop shock absorber uses a damping mechanism. The S-shaped copper foil is used to provide a resistance force, so that an appropriate contact pressure is generated between the damping plate and the load-bearing spring. Through its special elastic shape, the S-shaped copper foil can adjust its own shape during the vibration process to ensure that the damping plate and the load-bearing spring maintain a moderate state of resistance, thereby effectively transmitting and alleviating vibration energy. This process can improve the vibration reduction effect and ensure that the system can work stably when subjected to external vibration or impact, preventing excessive vibration from affecting the overall system.

[0020] 3. The piezoelectric-driven self-sensing desktop vibration absorber uses a regular triangular prism and a piezoelectric mechanism to absorb lateral vibration. The innovation of this design lies in that it combines the active control characteristics of the piezoelectric effect, which can further significantly improve the performance of the vibration isolation system in high-frequency vibration and multi-band vibration.

[0021] 4. The piezoelectric-driven self-sensing desktop shock absorber is set up by a force unloading mechanism. When the external force gently impacts the upper fixed plate, the upper fixed plate drives the L-shaped rod and the truncated cone block to gently impact the non-Newtonian fluid in the sealed cavity block. The external impact force and the viscous substance of the non-Newtonian fluid in the sealed cavity block impact each other and weaken. When the external impact force is more violent, the non-Newtonian fluid in the sealed cavity block and the truncated cone block rigidly conflict with each other, so that the sealed cavity block is driven to conflict with the telescopic tube, so that the telescopic tube is compressed. At this time, the air in the telescopic tube is squeezed out of the disc block through the vent hole, so that the air in the telescopic tube is quickly discharged, and at the same time, the impact force is absorbed by the compressed return spring. At this time, when the return spring needs to rebound, the vent hole on the top of the telescopic tube is blocked by the disc block, and the external air can only The input is slowly input through the micro-through hole, so that the telescopic tube can only return slowly, and the return spring can only return slowly, so as to avoid the rapid rebound of the absorbed impact force. This design effectively avoids the reaction force caused by the rapid rebound of the impact force, thereby reducing possible vibration transmission and structural impact, so that the system can be restored to its original state more smoothly, and due to the viscous characteristics of the non-Newtonian fluid, it can dynamically adjust its rheological properties according to the frequency and intensity of the external impact. When encountering high-frequency vibrations, the non-Newtonian fluid exhibits a strong damping effect in the sealed cavity block, thereby effectively absorbing and slowing down the propagation of high-frequency vibrations. Especially under high-frequency impacts, the viscous substance of the non-Newtonian fluid can quickly adjust the interaction with the vibration, reduce the transmission of vibration, and thus reduce its impact on the structure.

[0022] 5. The piezoelectric-driven self-sensing desktop shock absorber is set up using a recovery mechanism. Two ratchets in opposite directions are set on the inner wall of the bidirectional ratchet condition, which can drive the ratchet part to rotate clockwise when the bidirectional ratchet condition moves up and down. The clockwise rotation of the ratchet part drives the generator to rotate and generate electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a self-sensing desktop vibration absorber based on piezoelectric drive proposed by the present invention;

[0024] Figure 2 A schematic diagram of the structure of a piezoelectric-driven self-sensing table-type shock absorber damping mechanism proposed by the present invention;

[0025] Figure 3 A schematic diagram of the structure of a piezoelectric mechanism of a self-sensing desktop shock absorber based on piezoelectric drive proposed by the present invention;

[0026] Figure 4 This is a structural schematic diagram of a piezoelectric-driven self-sensing desktop shock absorber aluminum seat proposed by the present invention;

[0027] Figure 5A schematic diagram of the internal structure of a piezoelectric sensor for a self-sensing desktop shock absorber based on piezoelectric drive proposed by the present invention;

[0028] Figure 6 A schematic diagram of the structure of a piezoelectric brake of a self-sensing table-type shock absorber based on piezoelectric drive proposed by the present invention;

[0029] Figure 7 A schematic diagram of the internal structure of a piezoelectric brake of a self-sensing desktop shock absorber based on piezoelectric drive proposed by the present invention;

[0030] Figure 8 This is a structural schematic diagram of a piezoelectric-driven self-sensing desktop shock absorber force-releasing mechanism proposed by the present invention;

[0031] Fig. 9 A schematic cross-sectional structure diagram of a sealed cavity block of a self-sensing desktop vibration absorber based on piezoelectric drive proposed by the present invention;

[0032] Fig.10 A schematic cross-sectional structure diagram of a telescopic tube of a self-sensing desktop shock absorber based on piezoelectric drive proposed by the present invention;

[0033] Fig.11 A schematic diagram of the structure of a micro-through hole of a self-sensing desktop vibration absorber based on piezoelectric drive proposed by the present invention;

[0034] Fig.12 This is a structural schematic diagram of a piezoelectric-driven self-sensing desktop shock absorber recovery mechanism proposed by the present invention;

[0035] Fig.13 A schematic diagram of the structure of a bidirectional spine condition of a self-sensing desktop shock absorber based on piezoelectric drive proposed by the present invention;

[0036] Fig.14 This is a schematic structural diagram of a regular triangular prism of a self-sensing desktop vibration absorber based on piezoelectric drive proposed by the present invention.

[0037] In the figure: 1, upper plate; 2, base; 3, upper adapter plate; 4, damping mechanism; 41, limit cylinder; 42, load spring; 43, rubber damping element; 44, S-shaped copper foil; 45, damping sheet; 5, piezoelectric mechanism; 51, copper square; 52, piezoelectric sensor; 521, aluminum seat; 522, aluminum cover; 523, small spring; 524, mass block; 525, rubber ring; 526, disc rubber gasket; 527, single-sided piezoelectric sheet; 53, piezoelectric brake; 531, plastic shell; 532, aluminum cover shell; 533, shuttle-shaped rubber gasket; 534, ring rubber gasket; 535, pressure gasket loading rack; 536, double-sided piezoelectric sheet; 53 7. Plastic ring; 538. Plastic mover; 539. Cylindrical pin; 5310. Connecting spring; 5311. Copper sheet; 6. Regular triangular prism; 7. Unloading mechanism; 71. Upper fixing plate; 72. Lower fixing plate; 73. L-shaped rod; 74. C-shaped plate; 75. Cone block; 76. Telescopic tube; 77. Sealed cavity block; 78. Vent; 79. Fixed connecting plate; 710. Fixed spring; 711. Disc block; 712. Telescopic rod; 713. Micro through hole; 714. Return spring; 8. Recovery mechanism; 81. Connecting fixing plate; 82. Battery assembly; 83. Electric wire; 84. Generator; 85. Ratchet piece; 86. Bidirectional ratchet condition. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 - Fig.14A self-sensing desktop vibration absorber based on piezoelectric drive includes an upper plate 1, which serves as the upper support plate of the desktop vibration absorber and is used to carry precision instruments, such as microscopes and other equipment, and provide a platform for vibration measurement and isolation; a base 2, which serves as the basic structure of the vibration absorber and is used to support the entire device and connect it to the external environment to provide stable support; an upper adapter plate 3, which is arranged at the bottom of the upper plate 1 and is used to connect the upper plate 1 with other components to ensure the effective connection between the upper plate 1 and the vibration reduction unit below, and provide a connection interface for the measurement and control system; a damping mechanism 4, which is arranged between the upper adapter plate 3 and the base 2, and the damping mechanism 4 is provided with two symmetrical groups for reducing the amplitude of vibration. The damping mechanism 4 is arranged between the base 2 and the upper adapter plate 3, and its function is to control and alleviate the vibration energy, especially through the vertical and horizontal bearing springs 42 and the damping The combination of sheets 45 is used to improve the vibration reduction effect; the piezoelectric mechanism 5, two symmetrical groups of vertical piezoelectric mechanisms 5 are arranged between the upper adapter plate 3 and the base 2, and two symmetrical groups of vertical piezoelectric mechanisms 5 are arranged between the upper adapter plate 3 and the base 2, which are composed of a piezoelectric sensor 52 and a piezoelectric brake 53. The piezoelectric sensor 52 is used to sense vibration and convert it into an electrical signal, and the piezoelectric brake 53 is used to generate a reverse displacement for active vibration reduction. The piezoelectric material has a fast response capability and a wide frequency response range, so it can effectively resist high-frequency vibration and provide high-precision measurement; a regular triangular prism 6, the regular triangular prism 6 is arranged between the upper adapter plate 3 and the base 2, and is used to support and fix the horizontal piezoelectric mechanism 5. Two groups of lateral piezoelectric mechanisms 5 are arranged on the surface of the regular triangular prism 6. As one of the key structures of the shock absorber, it helps to transmit and control the direction of force, so that the lateral force can also be effectively isolated and converted. It cooperates with the piezoelectric mechanism 5 so that the horizontal vibration can generate a corresponding reverse force with the piezoelectric mechanism 5 to achieve the purpose of shock absorption; the unloading mechanism 7 is arranged between the upper adapter plate 3 and the base 2, and is used to offset the impact force, so that the impact force is absorbed and then slowly recovered, which plays a role in slowing down and absorbing the instantaneous impact from the outside; it adjusts and disperses the external impact force so that the system can smoothly return to its initial state, and prevents the impact force from causing excessive damage or interference to the system; the recovery mechanism 8 is arranged on the unloading mechanism 7, and is used to absorb the energy generated by the vibration and convert it into electrical energy storage, thereby providing electrical energy for the piezoelectric mechanism 5. Through this mechanism, the recovery mechanism 8 can effectively utilize the kinetic energy of the vibration in the system, convert it into electrical energy, and realize self-supply and recycling of energy.

[0040] The damping mechanism 4 includes a limiting cylinder 41 , which is fixedly connected to the top of the base 2 , thereby limiting the movement range of the damping mechanism 4 . Its main function is to prevent excessive displacement or deformation of the damping mechanism 4 and other components, thereby ensuring the structural stability of the shock absorber. The limiting cylinder 41 is fixedly connected to the top of the base 2, and one end of the load-bearing spring 42 is fixedly connected to the top of the base 2, and the other end of the load-bearing spring 42 is fixedly connected to the rubber damping member 43. The outer wall of the limiting cylinder 41 is fixedly connected to the S-shaped copper foil 44, and the two sides of the S-shaped copper foil 44 are fixedly connected to the damping plate 45. The S-shaped copper foil 44 is used to provide a resistance force, so that an appropriate contact pressure is generated between the damping plate 45 and the load-bearing spring 42. Through its special elastic shape, the S-shaped copper foil 44 can adjust its own shape during the vibration process, ensuring that the damping plate 45 and the load-bearing spring 42 maintain a moderate resistance state, thereby effectively transmitting and alleviating vibration energy. This process can improve the vibration reduction effect, and ensure that the system can work stably when subjected to external vibration or impact, and prevent excessive vibration from affecting the overall system.

[0041] The top of the rubber damping member 43 is fixedly connected to the bottom of the upper adapter plate 3, and the top of the upper adapter plate 3 is fixedly connected to the bottom of the upper plate 1. Through this structural design, the rubber damping member 43 plays a key role in transmitting and isolating the vibration between the upper plate 1 and the base 2; through the elasticity and damping performance of the rubber damping member 43, the vibration can be effectively alleviated and controlled between the upper plate 1 and the base 2, reducing the vibration transmission between the upper and lower parts. The elastic characteristics of the rubber damping member 43 help disperse the force generated during the vibration process, while reducing the damage or friction caused by direct contact. Through this design, the system can recover quickly when it withstands external impact, ensuring the stability and long-term reliability of the shock absorber. Through the fixed connection between the rubber damping member 43 and the upper adapter plate 3 and the upper plate 1, the overall vibration reduction effect of the system is improved. This design enables the system to maintain a good isolation effect under vibrations of different frequencies, especially in the application of precision instruments, it can achieve precise control of small vibrations and ensure the high stability and high precision of the equipment.

[0042] The piezoelectric mechanism 5 includes a copper square 51, a piezoelectric sensor 52 is fixedly connected to the inner wall of the copper square 51, a piezoelectric brake 53 is fixedly connected to the inner wall of the copper square 51, the piezoelectric sensor 52 is located on the top of the piezoelectric brake 53, the piezoelectric sensor 52 is used to sense external vibrations and convert them into electrical signals, these signals can be further processed to monitor the intensity, frequency and direction of the vibration, so as to achieve real-time perception and measurement of the vibration. Through this function, the piezoelectric sensor 52 can provide feedback signals for the entire system, which helps the control system to adjust the vibration reduction effect; the piezoelectric brake The device 53 can quickly generate reverse displacement to actively suppress or slow down the vibration according to the vibration information sensed by the piezoelectric sensor 52. Due to the high response speed and wide frequency response range of the piezoelectric material, the piezoelectric brake 53 can effectively resist high-frequency vibration and generate precise reverse force; the copper square 51 serves as a supporting and fixing structure. The copper square 51 firmly connects the piezoelectric sensor 52 and the piezoelectric brake 53 to ensure that they can work together effectively; the copper square 51 has a high thermal conductivity, which helps to improve thermal stability and mechanical strength, and supports the stable operation of the entire piezoelectric mechanism 5.

[0043] The piezoelectric sensor 52 includes an aluminum seat 521, which provides a shell structure for the piezoelectric sensor 52 and plays a role in protection and support. The aluminum seat 521 is fixedly connected to the inner wall of the copper square 51 and provides a connection position for other components. The aluminum seat 521 is fixedly connected to the inner wall of the copper square 51. An aluminum cover 522 is provided at the bottom of the aluminum seat 521. One end of a small spring 523 is fixedly connected to the inner wall of the aluminum cover 522. The other end of the small spring 523 is fixedly connected to a mass block 524. A rubber ring 525 is fixedly connected to the outer wall of the mass block 524. A disc rubber gasket 526 is fixedly connected to the top of the mass block 524. A single-sided Piezoelectric sheet 527, the single-sided piezoelectric sheet 527 is fixed on the inner wall of the aluminum base 521, and it is the core component of the piezoelectric sensor 52. When subjected to external vibration or impact, the single-sided piezoelectric sheet 527 will be deformed due to the action of force, thereby generating an electric charge, and the deformation amount is proportional to the intensity of the external vibration. When external vibration or force acts on the piezoelectric sensor 52, the mass block 524 will be displaced due to inertia. At this time, the single-sided piezoelectric sheet 527 is deformed due to the pressure of the mass block 524. The single-sided piezoelectric sheet 527 converts mechanical energy into an electrical signal through deformation. This electrical signal can reflect the intensity and frequency of the external vibration, and plays a role in vibration detection and sensing.

[0044] The piezoelectric brake 53 includes a plastic shell 531, which is fixedly connected to the inner wall of the copper square 51. The bottom of the plastic shell 531 is fixedly connected to an aluminum cover shell 532. A shuttle-shaped rubber gasket 533 is fixedly connected to the inner wall of the plastic shell 531. A circular rubber gasket 534 is fixedly connected to the outer wall of the shuttle-shaped rubber gasket 533. A pressure washer loading frame 535 is provided on the inner wall of the circular rubber gasket 534. The pressure washer loading frame 535 is provided with a pressure washer loading frame 536. A double-sided piezoelectric sheet 536 is arranged on the inner wall of 5, and a shuttle-shaped rubber gasket 533, annular rubber gasket 534, a pressure gasket loading frame 535, and a double-sided piezoelectric sheet 536 are arranged in a plurality of groups. The shuttle-shaped rubber gasket 533, annular rubber gasket 534, a pressure gasket loading frame 535, and a double-sided piezoelectric sheet 536 are arranged in a stacked manner. When the double-sided piezoelectric sheet 536 is subjected to external pressure or vibration, it will deform and generate electric charge. 36 has positive and negative piezoelectric effects and can respond to external forces in both positive and negative directions, thereby improving the response speed and sensitivity of the system. The shuttle-shaped rubber gasket 533 and the annular rubber gasket 534 can provide elastic support and absorb external vibration or pressure. Through the buffering effect of these elastic gaskets, the mechanical stress caused by the deformation of the double-sided piezoelectric sheet 536 can be effectively reduced, so that the double-sided piezoelectric sheet 536 can work normally within a wider deformation range and avoid excessive stress concentration. The shuttle-shaped rubber gasket 533, the annular rubber gasket 534 and the pressure gasket loading frame 535 effectively transmit the external force to the double-sided piezoelectric sheet 536 through the elastic medium, so that the double-sided piezoelectric sheet 536 can evenly receive the force and better distribute the external force through the stacked structure to prevent overload of a single component. Through the multi-level structural design, the piezoelectric brake 53 can provide stronger braking force and more precise braking control. The deformation of each double-sided piezoelectric sheet 536 can generate a certain voltage signal. The multiple double-sided piezoelectric sheets 536 work together to enhance the braking efficiency. In general, the piezoelectric brake 53 achieves more efficient and stable braking control through this stacked structure design, improves the response capability of the piezoelectric effect, and enhances the overall performance and durability of the piezoelectric brake 53. A plastic ring 537 is fixedly connected to the inner wall of the plastic shell 531, and a plastic mover 538 is fixedly connected to the bottom of the double-sided piezoelectric sheet 536. The plastic mover 538 is fixedly connected to the bottom of the double-sided piezoelectric sheet 536. A cylindrical pin 539 is fixedly connected to the bottom of 38, a copper sheet 5311 is fixedly connected to the bottom of the cylindrical pin 539, one end of a connecting spring 5310 is fixedly connected to the top of the copper sheet 5311, and the other end of the connecting spring 5310 is fixedly connected to the outer wall of the plastic mover 538. External vibration or pressure causes the double-sided piezoelectric sheet 536 to deform, and because it has positive and negative piezoelectric effects, it can respond to external forces in two directions; when deformed, the charge reaction of the double-sided piezoelectric sheet 536 is proportional to the external pressure or vibration intensity.Through these charges, the system can sense the size and direction of the external force, and the generated charges are fed back to the control system through the circuit, and the control system adjusts the output of the piezoelectric brake 53 according to the signal. At this time, the double-sided piezoelectric sheet 536 can not only feedback the change of the external force through its deformation and charge generation, but also achieve real-time response to external vibration or pressure. When the double-sided piezoelectric sheet 536 is deformed under the action of external force, the shuttle-shaped rubber gasket 533 and the annular rubber gasket 534 are used to transmit the external force to the double-sided piezoelectric sheet 536 through these elastic media. The shuttle-shaped rubber gasket 533 and the annular rubber gasket 534 effectively absorb external vibration and pressure, reduce the influence of mechanical stress on the double-sided piezoelectric sheet 536, and enable it to work normally within a wider deformation range, thereby avoiding damage caused by excessive stress concentration. The output of the piezoelectric brake 53 comes from the response of multiple double-sided piezoelectric sheets 536. The joint work of multiple units can greatly improve the accuracy and stability of the braking system. The voltage signal generated by each double-sided piezoelectric film 536 is used to accurately adjust the mechanical response of the piezoelectric brake 53 through the control system, and ultimately achieve effective braking control. The working principle of the piezoelectric brake 53 enables it to have a higher response frequency. Compared with traditional vibration isolation devices such as springs and rubber washers, the piezoelectric brake 53 can quickly respond to vibrations with higher frequencies. This is because the double-sided piezoelectric film 536 can convert external mechanical vibrations into electrical signals in a short period of time, and quickly adjust its deformation and response according to the signals. This enables the piezoelectric brake 53 to better isolate and absorb high-frequency vibrations. The piezoelectric brake 53 can sense and feedback multi-band vibration signals in real time, and make corresponding adjustments to vibrations in different frequency bands through the control system. For example, the system can adjust the response of the double-sided piezoelectric film 536 in the high-frequency and low-frequency regions respectively, forming an effective vibration isolation effect in multiple frequency bands. This adjustment capability has significant advantages in dealing with complex vibration environments.

[0045] The top of the base 2 is fixedly connected with a regular triangular prism 6, one end of a piezoelectric mechanism 5 is arranged on the two side surfaces of the regular triangular prism 6, and the other end of the piezoelectric mechanism 5 on the regular triangular prism 6 is fixedly connected to the upper adapter plate 3 for absorbing lateral vibration. The innovation of this design lies in that it combines the active control characteristics of the piezoelectric effect, which can further significantly improve the performance of the vibration isolation system in high-frequency vibration and multi-band vibration.

[0046] The unloading mechanism 7 includes an upper fixed plate 71, which is fixedly connected to the bottom of the upper adapter plate 3, a lower fixed plate 72 is fixedly connected to the top of the base 2, an L-shaped rod 73 is fixedly connected to the bottom of the upper fixed plate 71, a C-shaped plate 74 is fixedly connected to the top of the lower fixed plate 72, a truncated cone block 75 is fixedly connected to the outer wall of the L-shaped rod 73, one end of a telescopic tube 76 is fixedly connected to the outer wall of the C-shaped plate 74, a sealed cavity block 77 is fixedly connected to the other end of the telescopic tube 76, a non-Newtonian fluid is arranged on the inner wall of the sealed cavity block 77, the inner wall of the sealed cavity block 77 is connected to the outer wall piston of the truncated cone block 75, a return spring 714 is fixedly connected to the inner wall of the telescopic tube 76, and the top of the telescopic tube 76 A vent 78 is provided on the top of the telescopic tube 76, a fixed connecting plate 79 is fixedly connected to the outer wall of the fixed connecting plate 79, one end of a fixed spring 710 is fixedly connected to the outer wall of the fixed spring 710, and a disc block 711 is fixedly connected to the top of the disc block 711. One end of a telescopic rod 712 is fixedly connected to the top of the disc block 711, and the other end of the telescopic rod 712 is fixedly connected to the outer wall of the fixed connecting plate 79. A micro through hole 713 is provided on the outer wall of the disc block 711. When the external force gently impacts the upper fixed plate 71, the upper fixed plate 71 drives the L-shaped rod 73 and the truncated cone block 75 to gently impact the non-Newtonian fluid in the sealed cavity block 77. The external impact force and the non-Newtonian fluid in the sealed cavity block 77 The viscous substances in the body impact each other and weaken. When the external impact force is fierce, the non-Newtonian fluid in the sealed cavity block 77 and the truncated cone block 75 rigidly conflict with each other, so that the sealed cavity block 77 is driven to conflict with the telescopic tube 76, so that the telescopic tube 76 is compressed. At this time, the air in the telescopic tube 76 is squeezed and discharged through the vent hole 78 and the disc block 711, so that the air in the telescopic tube 76 is quickly discharged. At the same time, the impact force is absorbed by the compressed return spring 714. At this time, when the return spring 714 needs to rebound, the vent hole 78 on the top of the telescopic tube 76 is blocked by the disc block 711, and the external air can only be slowly input through the micro through hole 713, so that the telescopic tube 76 can only slowly return, so that the return spring 714 needs to rebound. The spring 714 can only return to its original position slowly to avoid the rapid rebound of the absorbed impact force. This design effectively avoids the reaction force caused by the rapid rebound of the impact force, thereby reducing the vibration transmission and structural impact, so that the system can be restored to its original state more smoothly. In addition, due to the viscous characteristics of the non-Newtonian fluid, it can dynamically adjust its rheological properties according to the frequency and intensity of the external impact. When encountering high-frequency vibrations, the non-Newtonian fluid exhibits a strong damping effect in the sealed cavity block 77, thereby effectively absorbing and slowing down the propagation of high-frequency vibrations. Especially under high-frequency impacts, the viscous substance of the non-Newtonian fluid can quickly adjust the interaction with the vibration, reduce the transmission of vibration, and thus reduce its impact on the structure.

[0047] The recovery mechanism 8 includes a connecting and fixing plate 81, which is fixedly connected to the outer wall of the base 2. The outer wall of the connecting and fixing plate 81 is fixedly connected to a battery assembly 82. The battery assembly 82 is provided with a transformer, which can directly receive the electric energy generated by the generator 84. The outer wall of the battery assembly 82 is fixedly connected to one end of an electric wire 83, and the other end of the electric wire 83 is fixedly connected to a generator 84. The output shaft of the generator 84 is fixedly connected to a ratchet member 85. The bottom of the L-shaped rod 73 is fixedly connected to a two-way ratchet condition 86. Two ratchet strips in opposite directions are provided on the inner wall of the two-way ratchet condition 86, which can drive the ratchet member 85 to rotate clockwise when the two-way ratchet condition 86 moves up and down. The clockwise rotation of the ratchet member 85 drives the generator 84 to rotate and generate electricity.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A self-sensing desktop vibration absorber based on piezoelectric drive, characterized in that: include An upper plate (1) is used as an upper support plate of the table-type vibration damper and is used to carry precision instruments; The base (2) serves as the lower support plate of the table-type vibration damper and the basic structure of the vibration damper, and is used to support the entire device and connect to the external environment; An upper adapter plate (3), the upper adapter plate (3) being arranged at the bottom of the upper plate (1) and being used to connect the upper plate (1) with other components; A damping mechanism (4), the damping mechanism (4) being arranged between the upper adapter plate (3) and the base (2), the damping mechanism (4) being arranged in two symmetrical groups for reducing the amplitude of vibration; Piezoelectric mechanism (5), two groups of symmetrical vertical piezoelectric mechanisms (5) are arranged between the upper adapter plate (3) and the base (2), and are used to sense vibration and convert it into an electrical signal to generate a reverse displacement for active vibration reduction; A regular triangular prism (6), the regular triangular prism (6) being arranged between the upper adapter plate (3) and the base (2) and being used to support and fix the horizontal piezoelectric mechanism (5), and two groups of transverse piezoelectric mechanisms (5) being arranged on the surface of the regular triangular prism (6); A force unloading mechanism (7), wherein the force unloading mechanism (7) is arranged between the upper adapter plate (3) and the base (2) and is used to offset the impact force; A recovery mechanism (8) is arranged on the unloading mechanism (7) and is used to absorb energy generated by vibration and convert it into electrical energy for storage, thereby providing electrical energy for the piezoelectric mechanism (5).

2. A piezoelectrically driven self-sensing table-top vibration absorber according to claim 1, characterized in that: The damping mechanism (4) comprises a limiting cylinder (41), the limiting cylinder (41) being fixedly connected to the top of the base (2), one end of a bearing spring (42) being fixedly connected to the top of the base (2), the other end of the bearing spring (42) being fixedly connected to a rubber damping member (43), an outer wall of the limiting cylinder (41) being fixedly connected to an S-shaped copper foil (44), and damping sheets (45) being fixedly connected to both sides of the S-shaped copper foil (44).

3. A piezoelectric driven self-sensing table-top vibration absorber according to claim 2, characterized in that: The top of the rubber damping member (43) is fixedly connected to the bottom of the upper adapter plate (3), and the top of the upper adapter plate (3) is fixedly connected to the bottom of the upper plate (1).

4. The piezoelectrically driven self-sensing table-top vibration absorber according to claim 2, characterized in that: The piezoelectric mechanism (5) comprises a copper square (51), a piezoelectric sensor (52) being fixedly connected to the inner wall of the vertically arranged copper square (51), a piezoelectric brake (53) being fixedly connected to the inner wall of the copper square (51), and the piezoelectric sensor (52) being located on the top of the piezoelectric brake (53).

5. The piezoelectrically driven self-sensing table-top vibration absorber according to claim 4, characterized in that: The piezoelectric sensor (52) comprises an aluminum seat (521), the aluminum seat (521) is fixedly connected to the inner wall of the copper square (51), an aluminum cover (522) is arranged at the bottom of the aluminum seat (521), one end of a small spring (523) is fixedly connected to the inner wall of the aluminum cover (522), the other end of the small spring (523) is fixedly connected to a mass block (524), the outer wall of the mass block (524) is fixedly connected to a rubber ring (525), the top of the mass block (524) is fixedly connected to a disc rubber gasket (526), ​​and a single-sided piezoelectric sheet (527) is arranged on the inner wall of the aluminum seat (521).

6. The piezoelectric driven self-sensing table-top vibration absorber according to claim 4, characterized in that: The piezoelectric brake (53) comprises a plastic shell (531), the plastic shell (531) is fixedly connected to the inner wall of the copper square (51), the bottom of the plastic shell (531) is fixedly connected to an aluminum cover shell (532), the inner wall of the plastic shell (531) is fixedly connected to a shuttle-shaped rubber gasket (533), the outer wall of the shuttle-shaped rubber gasket (533) is fixedly connected to a circular rubber gasket (534), a pressure washer loading rack (535) is arranged on the inner wall of the circular rubber gasket (534), a double-sided piezoelectric sheet (536) is arranged on the inner wall of the pressure washer loading rack (535), the shuttle-shaped rubber gasket (533), the circular rubber gasket (534), the pressure washer loading rack (535), the double-sided piezoelectric sheet (536) are fixedly connected to the inner wall of the copper square (51), and ...). 36) is provided with several groups, and the shuttle-shaped rubber gasket (533), the annular rubber gasket (534), the pressure gasket loading frame (535), and the double-sided piezoelectric sheet (536) in each group are arranged in a stacked manner, and a plastic ring (537) is fixedly connected to the inner wall of the plastic shell (531), and the bottom of the double-sided piezoelectric sheet (536) in the bottom group is fixedly connected to a plastic mover (538), and the bottom of the plastic mover (538) is fixedly connected to a cylindrical pin (539), and the bottom of the cylindrical pin (539) is fixedly connected to a copper sheet (5311), and the top of the copper sheet (5311) is fixedly connected to one end of a connecting spring (5310), and the other end of the connecting spring (5310) is fixedly connected to the outer wall of the plastic mover (538).

7. The piezoelectrically driven self-sensing table-top vibration absorber according to claim 6, characterized in that: A regular triangular prism (6) is fixedly connected to the top of the base (2); one end of a piezoelectric mechanism (5) is arranged on two side surfaces of the regular triangular prism (6); the other end of the piezoelectric mechanism (5) on the regular triangular prism (6) is fixedly connected to an upper adapter plate (3); the copper square (51) arranged horizontally is fixed to the upper adapter plate (3); the copper sheet (5311) arranged horizontally is fixedly connected to the regular triangular prism (6); the copper square (51) arranged vertically is fixedly connected to the upper adapter plate (3); and the copper sheet (5311) arranged vertically is fixedly connected to the base (2).

8. The piezoelectric driven self-sensing table-top vibration absorber according to claim 7, characterized in that: The unloading mechanism (7) comprises an upper fixing plate (71), wherein the upper fixing plate (71) is fixedly connected to the bottom of the upper adapter plate (3); the top of the base (2) is fixedly connected to a lower fixing plate (72); the bottom of the upper fixing plate (71) is fixedly connected to an L-shaped rod (73); the top of the lower fixing plate (72) is fixedly connected to a C-shaped plate (74); the outer wall of the L-shaped rod (73) is fixedly connected to a truncated cone block (75); the outer wall of the C-shaped plate (74) is fixedly connected to one end of a telescopic tube (76); the other end of the telescopic tube (76) is fixedly connected to a sealed cavity block (77); a non-Newtonian fluid is provided on the inner wall of the sealed cavity block (77); and the inner wall of the sealed cavity block (77) is in contact with the inner wall of the sealed cavity block (77). The outer wall of the truncated cone block (75) is connected to a piston, a return spring (714) is fixedly connected to the inner wall of the telescopic tube (76), a vent hole (78) is provided at the top of the telescopic tube (76), a fixed connecting plate (79) is fixedly connected to the top of the telescopic tube (76), one end of a fixed spring (710) is fixedly connected to the outer wall of the fixed connecting plate (79), the other end of the fixed spring (710) is fixedly connected to a disc block (711), one end of a telescopic rod (712) is fixedly connected to the top of the disc block (711), the other end of the telescopic rod (712) is fixedly connected to the outer wall of the fixed connecting plate (79), and a micro through hole (713) is provided on the outer wall of the disc block (711).

9. The piezoelectric driven self-sensing table-top vibration absorber according to claim 8, characterized in that: The recovery mechanism (8) comprises a connecting and fixing plate (81), the connecting and fixing plate (81) being fixedly connected to the outer wall of the base (2), the outer wall of the connecting and fixing plate (81) being fixedly connected to a battery assembly (82), the outer wall of the battery assembly (82) being fixedly connected to one end of an electric wire (83), the other end of the electric wire (83) being fixedly connected to a generator (84), the output shaft of the generator (84) being fixedly connected to a ratchet member (85), and the bottom of the L-shaped rod (73) being fixedly connected to a bidirectional ratchet member (86).

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