Energy recovery and vibration reduction structure based on gyroscope-piezoelectric coupling

Abstract

The invention discloses an energy recovery and vibration reduction structure based on gyroscope-piezoelectric coupling. The structure comprises a frame, a piezoelectric coupling assembly and an energy recovery assembly, the stabilizing part comprises a rotating frame mounted on the frame and a gyroscope arranged on the rotating frame; the kinetic energy recovery part comprises an action body mounted on the frame and a piezoelectric plate mounted on the action body; a first adsorption piece is installed on the rotating frame, and a second adsorption piece is installed on the action body. When the vibration condition is serious, the first adsorption piece on the rotating frame can correspond to the second adsorption piece on the action piece in position, and at the moment, due to mutual influence of magnetic force between the first adsorption piece and the second adsorption piece and the influence of the magnetic force of the first adsorption piece, the further rotating resistance of the rotating frame can be increased; and the second adsorption piece enables the action body to act due to the magnetic force, so that the piezoelectric plate is stressed, mechanical energy is converted into electric energy, and the effect of energy recovery is achieved.

Description

Technical Field

[0001] The present invention relates to a vibration damping structure, and in particular to an energy recovery and vibration damping structure based on gyro-piezoelectric coupling. Background Art

[0002] A vibration damping structure is a structural system used to reduce or suppress vibrations, and is widely applied in the fields of machinery, automobiles, buildings, aerospace, etc. The vibration damping structure reduces the transmission of vibration energy through specific designs or additional devices. It can reduce the vibration amplitude, avoid resonance failure of the structure, reduce noise, fatigue damage and comfort problems caused by vibrations, improve the stability and reliability of the system, and extend the lifespan of equipment or buildings.

[0003] The energy conversion method of existing vibration damping structures relies on passive energy absorption, has limited response capabilities to low-frequency vibrations and complex loads, and does not integrate an energy recovery function, so the rotational energy is not utilized resourcefully. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: lack of integrated energy recovery.

[0005] The above technical problem is solved by the following technical solution: The present invention provides an energy recovery and vibration damping structure based on gyro-piezoelectric coupling, which includes:

[0006] A frame;

[0007] A stabilizer, including a rotating frame installed on the frame and a gyroscope provided on the rotating frame;

[0008] A kinetic energy recovery member, including an actuating body installed on the frame and a piezoelectric sheet installed on the actuating body;

[0009] A first adsorbing member is installed on the rotating frame, and a second adsorbing member is installed on the actuating body;

[0010] When the rotating frame rotates, the first adsorbing member can adsorb the second adsorbing member to drive the actuating body to act, and the piezoelectric sheet is pressed.

[0011] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling of the present invention: The end of the actuating body is inclined towards the rotating frame.

[0012] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling of the present invention: The actuating bodies are arranged in pairs, and the two paired actuating bodies are respectively located on both sides of the rotation direction of the rotating frame.

[0013] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: The moving body is a deformation sheet, and the piezoelectric sheet is mounted on the deformation sheet.

[0014] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: The moving body includes a first plate mounted on the frame, and a second plate rotatably connected to the first plate; the piezoelectric sheet is mounted on the first plate and the second plate.

[0015] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: It further includes an elastic member; the elastic member is connected to the second plate.

[0016] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: The elastic member includes a sliding column slidably mounted on the first plate; a cable, one end of which is connected to the second plate and the other end is connected to the sliding column; a spring in contact with the sliding column.

[0017] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: The cable is detachably connected to the sliding column.

[0018] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: The frame includes two panels, and a sandwich structure between the two panels, and the rotating frame is mounted on the sandwich structure.

[0019] In a preferred embodiment of the energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to the present invention: A side shaft is provided on the rotating frame, and the rotating frame is rotatably mounted on the sandwich structure through the side shaft.

[0020] The beneficial effects of the present invention are as follows: Through this solution, the two panels are respectively mounted on the first mechanism and the second mechanism. When relative vibration occurs between the first mechanism and the second mechanism, affected by the inner core mechanism, the rotating frame will rotate relative to the central frame. When the rotating frame deflects, based on the principle of gyroscopic axis stability, the rotating frame will generate a reverse torque through precession to actively cancel the vibration excitation and suppress the structural vibration. At the same time, when the vibration is relatively severe, the first attracting member on the rotating frame can correspond to the second attracting member on the moving member. At this time, due to the magnetic force between the first attracting member and the second attracting member, affected by the magnetic force of the first attracting member, the resistance to further rotation of the rotating frame can be increased, thereby further suppressing the vibration of the structure. Affected by the magnetic force of the second attracting member, the second attracting member causes the moving body to move due to the magnetic force, so that the piezoelectric sheet is stressed and converts mechanical energy into electrical energy, thereby achieving the effect of energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention. Among them:

[0022] Figure 1 shows the overall structural schematic diagram of the present invention;

[0023] Figure 2 shows the front view of the present invention;

[0024] Figure 3 shows the position diagram of the rotating frame and the central frame of the present invention;

[0025] Figure 4 shows the distribution diagram of the moving bodies of the present invention;

[0026] Figure 5 shows the exploded view of the overall structure of the present invention;

[0027] Figure 6 shows the schematic diagram of the first embodiment of the moving body in the present invention;

[0028] Figure 7 shows the schematic diagram of the second embodiment of the moving body in the present invention.

[0029] 100, frame; 101, panel; 102, sandwich mechanism; 102a, tie rod; 102b, central frame; 200, stabilizer; 201, rotating frame; 201a, side shaft; 202, gyroscope; 300, kinetic energy recovery member; 301, moving body; 302, piezoelectric sheet; 301a, deformation sheet; 301b, first plate; 301c, second plate; 301d, base; 400, first adsorbing member; 500, second adsorbing member; 600, elastic member; 601, sliding column; 602, cable; 603, spring; 604, buckle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings.

[0031] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention, but these terms may change according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0032] Refer to Figure 1 Figure 1 , this embodiment provides an energy recovery and vibration damping structure based on gyro-piezoelectric coupling, including a frame 100; the frame 100 includes two panels 101 and a sandwich mechanism 102 disposed between the two panels 101. The main purpose of the frame 100 is to install this vibration damping structure on the equipment, structure, or unit to be built. In this embodiment, the number of panels 101 is two. Installation holes are provided on both panels 101 for installation. The two panels 101 can be installed on two different parts of the same equipment, or the two panels 101 can also be installed between two independent structures that need to be connected to reduce vibration. For example, when installed between a first mechanism and a second mechanism, one panel 101 is connected to the first mechanism and the other panel 101 is connected to the second mechanism. It should be noted that the panel 101 is not necessarily a planar structure and can be a structure with other different configurations. For example, when the installation position of the first mechanism is an arc surface, the panel 101 can also adopt an arc surface design so that the panel 101 and the first mechanism have a larger fitting area, thereby improving the connection stability.

[0033] Please refer to Figure 1 and Figure 2 Figure 2 , in this embodiment, the sandwich mechanism 102 is composed of two parts, one is a tie rod 102a and the other is a center frame 102b. The number of tie rods 102a is multiple, and they are respectively installed on the sides of the two panels 101 close to each other. For example, four tie rods 102a are installed on the sides of the two panels 101 close to each other. The center frame 102b is installed at the ends of these tie rods 102a close to each other. The center frame 102b can connect the ends of these tie rods 102a together, thereby connecting the two panels 101 together. The shape of the center frame 102b is annular.

[0034] This vibration damping structure further includes a stabilizer 200, including a rotating frame 201 installed on the frame 100 and a gyroscope 202 disposed on the rotating frame 201; the rotating frame 201 is installed on the sandwich mechanism 102. The rotating frame 201 is an annular structure and is perpendicular to the center frame 102b. Both ends of the gyroscope 202 have rotating shafts, and both ends of the gyroscope 202 are rotatably installed on the rotating frame 201 through the rotating shafts. In addition, a driving structure, such as a driving motor, can be installed on the rotating frame 201. The driving motor is connected to the rotating shaft of the gyroscope 202 to drive the gyroscope 202 to rotate. Preferably, the driving motor is installed at the bottom of the rotating frame 201.

[0035] Please refer to Figure 5, a side shaft 201a is provided on the rotating frame 201. The rotating frame 201 is rotatably mounted on the sandwich mechanism 102 through the side shaft 201a, mainly on the central frame 102b of the sandwich mechanism 102. The number of side shafts 201a is two, and both side shafts 201a are rotatably connected to the central frame 102b, enabling the rotating frame 201 to rotate relative to the central frame 102b, thereby the included angle between the rotating frame 201 and the central frame 102b.

[0036] As Figure 3 , the movement mode of the rotating frame 201 is shown. In this figure, the two panels 101 are respectively labeled as the first panel 101 and the second panel 101. The first panel 101 is connected to the first mechanism, and the second panel 101 is connected to the second mechanism. In addition, the arrangement direction of the central frame 102b is labeled as X, and the arrangement direction of the rotating frame 201 is labeled as Y. When the first mechanism vibrates, the panel 101 will vibrate accordingly. In this case, it will cause the rotating frame 201 to deflect relative to the central frame 102b. When the rotating frame 201 deflects, its rotation axis is the side shaft 201a, and its rotation directions are clockwise and counterclockwise in the plane of the paper. When the rotating frame 201 deflects, based on the principle of gyroscopic axis stability, the rotating frame 201 will generate a reverse torque through precession, actively cancel the vibration excitation, and suppress the structural vibration to achieve the vibration reduction effect. Compared with the existing centralized passive energy absorption and vibration reduction, this vibration reduction structure using the gyroscope 202 can achieve the effect of active vibration reduction.

[0037] Please refer to Figures 1 to 4 , this vibration reduction structure includes a kinetic energy recovery member 300, which includes an operating body 301 installed on the frame 100 and a piezoelectric sheet 302 installed on the operating body 301; a first adsorbing member 400 is installed on the rotating frame 201, and a second adsorbing member 500 is installed on the operating body 301; when the rotating frame 201 rotates, the first adsorbing member 400 can adsorb the second adsorbing member 500, driving the operating body 301 to act, and the piezoelectric sheet 302 is compressed.

[0038] When the rotating frame 201 and the central frame 102b are in a vertical state, the first adsorbing member 400 and the second adsorbing member 500 are misaligned, and the operating body 301 is not stressed. When the rotating frame 201 rotates clockwise or counterclockwise relative to the central frame 102b, the first adsorbing member 400 on the rotating frame 201 and the second adsorbing member 500 on the operating body 301 can be in position correspondence. At this time, the first adsorbing member 400 can provide suction force to the second adsorbing member 500, causing the operating body 301 to be stressed and act. At this time, the piezoelectric sheet 302 will be under pressure, and the mechanical vibration energy will be converted into electrical energy through the positive piezoelectric effect.

[0039] The wiring method of the piezoelectric sheet 302 can adopt the conventional wiring method.

[0040] Through this solution, the two panels 101 are respectively installed on the first mechanism and the second mechanism. When relative vibration occurs between the first mechanism and the second mechanism, affected by the inner core mechanism, the rotating frame 201 will rotate relative to the central frame 102b. When the rotating frame 201 deflects, based on the principle of gyroscopic axis fixation, the rotating frame 201 will generate a reverse torque through precession, actively cancel the vibration excitation, suppress the structural vibration, and achieve the damping effect.

[0041] Meanwhile, when the vibration is relatively severe, the first attachment 400 on the rotating frame 201 can correspond to the position of the second attachment 500 on the moving part. At this time, due to the magnetic force, the first attachment 400 and the second attachment 500 affect each other. Affected by the magnetic force of the first attachment 400, the resistance to the further rotation of the rotating frame 201 can be increased, thereby further suppressing the vibration of the structure. Affected by the magnetic force of the second attachment 500, the second attachment 500 causes the moving body 301 to move due to the magnetic force, so that the piezoelectric sheet 302 is stressed and converts mechanical energy into electrical energy, thereby achieving the effect of energy recovery.

[0042] In this embodiment, both the first attachment 400 and the second attachment 500 adopt magnetic structures. Preferably, both the first attachment 400 and the second attachment 500 adopt permanent magnet structures. When the positions of the first attachment 400 and the second attachment 500 correspond, the first attachment 400 can apply a magnetic force to the second attachment 500, so as to cause the moving body 301 to move.

[0043] The end of the moving body 301 is inclined towards the rotating frame 201. Since the bottom end of the moving body 301 is installed on the central frame 102b, the bottom end of the moving body 301 cannot correspond to the rotating frame 201. Therefore, the top end of the moving body 301 is inclined towards the rotating frame 201, so that the top end of the moving body 301 can correspond to the position of the rotating frame 201 below, so that the second attachment 500 on the moving body 301 can correspond to the first attachment 400 on the rotating frame 201.

[0044] The moving bodies 301 are arranged in pairs. The two paired moving bodies 301 are respectively located on both sides of the rotation direction of the rotating frame 201. In this embodiment, the number of moving bodies 301 is eight. The eight moving bodies 301 are respectively installed on both sides of the rotating frame 201. A second attachment 500 is installed on each moving body 301. Correspondingly, eight first attachments 400 are also installed on the rotating frame 201, as Figure 4, among the eight actuators 301, the four on the left side of the rotating frame 201 are labeled as A1 to A4, and the four on the right side of the rotating frame 201 are labeled as B1 to B4. When the rotating frame 201 rotates clockwise, the first adsorbent 400 on the actuator 301 can correspond to the positions of the four actuators 301 from A1 to A4. When the rotating frame 201 rotates counterclockwise, the first adsorbent 400 of the actuator 301 can correspond to the positions of the four actuators 301 from B1 to B4, so that whether the rotating frame 201 rotates counterclockwise or clockwise, the corresponding actuator 301 can be actuated.

[0045] Among them, by adjusting the installation position of the second adsorbent installed on the actuator 301, when the rotating part rotates clockwise or counterclockwise by less than 4°, the first adsorbent and the second adsorbent will not correspond in position. When the rotating part rotates clockwise or counterclockwise by an angle greater than 4°, the first adsorbent starts to correspond in position with the second adsorbent.

[0046] Please refer to Figure 6 , as the first implementation manner of the actuator 301, the actuator 301 is a deformation sheet 301a, the piezoelectric sheet 302 is installed on the deformation sheet 301a, the bottom end of the deformation sheet 301a is directly fixed on the central frame 102b, the top end of the deformation sheet 301a extends above the rotating frame 201, and the second adsorbent 500 is installed at the top end of the deformation sheet 301a. When the positions of the first adsorbent 400 and the second adsorbent 500 correspond, the magnetic force of the first adsorbent 400 on the second adsorbent 500 can cause the deformation sheet 301a to deform, thereby generating stress on the piezoelectric sheet 302 on the deformation sheet 301a, so that the piezoelectric sheet 302 converts mechanical energy into electrical energy.

[0047] Preferably, a card slot is opened on the deformation sheet 301a, and the piezoelectric sheet 302 is installed in the card slot of the deformation sheet 301a, so that the piezoelectric sheet 302 is attached to the deformation sheet 301a, and when the deformation sheet 301a deforms, it can better drive the piezoelectric sheet 302 to deform and generate stress.

[0048] Please refer to Figure 7 , as the second implementation manner of the actuator 301, the actuator 301 includes a first plate 301b installed on the frame 100 and a second plate 301c rotatably connected to the first plate 301b; the piezoelectric sheet 302 is installed on the first plate 301b and the second plate 301c.

[0049] Relative to the first implementation of the moving body 301, in this implementation, the moving body 301 adopts a split design with a first plate 301b and a second plate 301c. The first plate 301b and the second plate 301c are rotatably connected by a rotating shaft. The bottom bracket of the first plate 301b is fixedly installed on the central frame 102b. The fixing method can be screw connection or direct welding. Tracks are provided on both the first plate 301b and the second plate 301c. The piezoelectric sheet 302 is directly slidably installed inside the track, and the top of the track has an opening through which the piezoelectric sheet 302 can be directly taken out from the top opening of the track.

[0050] In this embodiment, the second adsorbent 500 is installed at the end of the second plate 301c away from the first plate 301b. Under normal conditions, the first plate 301b and the second plate 301c remain parallel, and at this time, the piezoelectric sheet 302 does not deform. When the rotating frame 201 rotates and the first adsorbent 400 and the second adsorbent 500 are in corresponding positions, the second plate 301c can rotate relative to the first plate 301b. At this time, the part of the piezoelectric sheet 302 on the second plate 301c bends relative to the part on the first plate 301b, so that the piezoelectric sheet 302 generates electric energy due to stress.

[0051] This damping structure further includes an elastic member 600; the elastic member 600 is connected to the second plate 301c. The elastic member 600 includes a sliding column 601 slidably installed on the first plate 301b; a cable 602, one end of which is connected to the second plate 301c and the other end is connected to the sliding column 601; and a spring 603 in contact with the sliding column 601.

[0052] As shown in the figure, a base 301d is installed on the first plate 301b. The base 301d can be integrally formed on the first plate 301b. A through hole is provided on the base 301d. The sliding column 601 passes through the through hole. The bottom of the sliding column 601 has a pressing part. One end of the spring 603 is in contact with the base 301d, and the other end of the spring 603 is in contact with the pressing part on the sliding column 601. When not under force, the spring 603 limits the initial position of the sliding column 601 by its elastic force, so that the sliding column 601 is in the lowest position. At this time, the first plate 301b and the second plate 301c are in a parallel state. When the positions of the first adsorbent 400 and the second adsorbent 500 correspond, the second plate 301c rotates relative to the first plate 301b. At this time, the rotation of the second plate 301c will pull the cable 602, causing the sliding column 601 to move upward, and the pressing part presses the spring 603, causing the spring 603 to deform. When the magnetic force received by the second adsorbent 500 on the second plate 301c disappears, the spring 603 can push the sliding column 601 back to the lowest position.

[0053] The cable 602 is detachably connected to the sliding column 601. At the top of the sliding column 601, a hanging buckle 604 is detachably connected by threads. The cable 602 is connected to the hanging buckle 604. The diameter of the hanging buckle 604 is larger than that of the sliding column 601, so that the hook cannot pass through the through hole, thereby restricting the lowest position of the sliding column 601.

[0054] Compared with the actuator 301 in the first embodiment, the actuator 301 in this embodiment will not deform itself as a whole, and there will be no problem that the actuator 301 breaks or is difficult to recover due to multiple deformations.

[0055] In addition, in this embodiment, the elastic member 600 replaces the elastic force of the deformation piece 301a. When the spring 603 in the elastic member 600 needs to be replaced because the restoring force is poor after multiple presses, only need to remove the hanging buckle 604, and then remove the sliding column 601 from the base 301d, then the spring 603 can be replaced, avoiding the problem that it is difficult to replace the damaged deformation piece 301a in the first embodiment.

[0056] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. An energy recovery and vibration damping structure based on gyro-piezoelectric coupling, characterized in that: Comprising, a frame (100); a stabilizer (200), including a rotating frame (201) mounted on the frame (100), and a gyroscope (202) provided on the rotating frame (201); a kinetic energy recovery member (300), including an actuating body (301) mounted on the frame (100), and a piezoelectric sheet (302) mounted on the actuating body (301); a first adsorbing member (400) is mounted on the rotating frame (201), and a second adsorbing member (500) is mounted on the actuating body (301); when the rotating frame (201) rotates, the first adsorbing member (400) can adsorb the second adsorbing member (500), driving the actuating body (301) to act, and the piezoelectric sheet (302) is compressed.

2. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 1, wherein: The end of the actuating body (301) inclines towards the rotating frame (201).

3. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 1, wherein: The actuating bodies (301) are arranged in pairs, and the two paired actuating bodies (301) are respectively located on both sides of the rotation direction of the rotating frame (201).

4. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 1 or 2 or 3, characterized in that: The actuating body (301) is a deformable sheet (301a), and the piezoelectric sheet (302) is mounted on the deformable sheet (301a).

5. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 1 or 2 or 3, characterized in that: The actuating body (301) includes a first plate (301b) mounted on the frame (100), and a second plate (301c) rotatably connected to the first plate (301b); The piezoelectric sheet (302) is mounted on the first plate (301b) and the second plate (301c).

6. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 5, characterized in that: It further includes an elastic member (600); the elastic member (600) is connected to the second plate (301c).

7. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 6, characterized in that: The elastic member (600) includes, a sliding column (601), which is slidably mounted on the first plate (301b); a cable (602), one end of which is connected to the second plate (301c), and the other end is connected to the sliding column (601); a spring (603), which abuts against the sliding column (601).

8. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 7, characterized in that: The cable (602) is detachably connected to the sliding column (601).

9. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 1 or 2 or 3, characterized in that: The frame (100) includes two panels (101), and a sandwich structure (102) provided between the two panels (101), and the rotating frame (201) is mounted on the sandwich structure (102).

10. The energy recovery and vibration damping structure based on gyro-piezoelectric coupling according to claim 9, characterized in that: A side shaft (201a) is provided on the rotating frame (201), and the rotating frame (201) is rotatably mounted on the sandwich structure (102) through the side shaft (201a).

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