Multi-stage damping semi-active magnetoelectric damper capable of recycling energy

Abstract

The invention discloses a multi-stage damping semi-active magnetoelectric damper capable of recycling energy. Relates to the technical field of engineering structure shock-absorbing dampers, and comprises a transmission mechanism, the transmission mechanism comprises a spring box, power springs, steel wires and a rotor, the spring box is provided with an upper part and a lower part, the steel wires and the power springs are respectively arranged in the upper part and the lower part of the spring box, the rotor is arranged in the middle of the spring box, and one ends of the two steel wires are connected and wound on the rotor; lug rings are arranged at the other ends of the two steel wires, the inner ring ends of the two power springs are fixed to the rotor in a penetrating mode, and the other ends of the two power springs are connected with the spring box; the buffer mechanism comprises a first-stage buffer unit, a second-stage buffer layer and a third-stage buffer unit, and the first-stage buffer unit, the second-stage buffer layer and the third-stage buffer unit are sequentially arranged on the two spring boxes; by means of the novel damper capable of achieving multi-order mixed control over acceleration, speed and displacement, an engineering structure can meet the self-adaptive damping requirement during vibration.

Description

Technical Field

[0001] The invention relates to the technical field of engineering structure vibration-absorbing dampers, and more specifically to a multi-stage vibration-absorbing semi-active magnetoelectric damper with energy recovery. Background Art

[0002] Building structures often have to bear various dynamic loads, including wind loads, vehicle loads, crowd loads, etc., and the impact of earthquakes on building structures has attracted widespread attention. With the acceleration of urbanization, in order to protect people's lives and property, the safety performance of various infrastructures, housing buildings and other building structures has received more and more attention, especially in earthquake-prone areas. In order to improve the seismic performance of building structures, various related structural control technologies have been developed in recent decades to prevent or reduce damage caused by earthquakes, including active, passive, and semi-active control.

[0003] The active control system is based on a certain control algorithm. Under the stimulation of a large amount of external energy, it actively adjusts its damping characteristics according to a pre-set control strategy to achieve a better vibration control effect. The system can adjust the damping characteristics in real time as needed to adapt to the vibration requirements under different working conditions. In some cases, it can achieve better vibration control effects, but the system is highly complex, expensive and consumes a lot of energy. Compared with active control systems, passive control systems do not rely on external energy input and are easy to install, so they are widely used. Passive control systems are divided into displacement, velocity and acceleration related types. At present, traditional passive control shock absorption devices include metal dampers, liquid viscous dampers, inertial capacity systems, etc., but the above devices all control the single response of earthquakes. For example, metal dampers dissipate energy according to the reciprocating displacement deformation of the damper under earthquake action, the energy consumption of viscous dampers is related to the deformation speed of the structure under earthquake action, and the inertial capacity system can only reduce the seismic response of the structure according to the deformation acceleration of the structure feedback under earthquake action. Although passive control systems are widely used, their single control ability can only ensure the safety of the structure under earthquake action, and the adjustment ability for complex vibrations is limited. Moreover, due to the fixed stiffness distribution of the shock absorption route of the device, it cannot meet the requirements of adaptive shock absorption control with structural response. Semi-active control belongs to parameter control. The control process depends on the structural response and external excitation information. The stiffness or damping parameters of the structure are changed in real time by a small amount of energy to reduce the response of the structure. Semi-active control does not require too much external energy input, but the actuator that implements the control force needs a small amount of energy adjustment so that it can actively use the reciprocating relative deformation or speed of the structure to achieve the active optimal control force as much as possible. Considering the problems existing in active control systems and passive control systems, the advantages of semi-active control systems are combined.

[0004] Therefore, how to provide a new type of damper that can achieve multi-order mixed control of acceleration, velocity, and displacement so that the engineering structure can meet the requirements of adaptive shock absorption when vibrating, and a multi-order shock-absorbing semi-active magnetoelectric damper that can recover energy is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In view of this, the present invention provides a multi-order shock-absorbing semi-active magnetoelectric damper with energy recovery, aiming to solve one of the problems in the above-mentioned background technology. The new damper can realize multi-order mixed control of acceleration, velocity and displacement, so that the engineering structure can meet the adaptive shock absorption requirements when vibrating.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A multi-stage vibration-absorbing semi-active magnetoelectric damper with energy recovery, comprising:

[0008] The transmission mechanism comprises a spring box, a power spring, a steel wire and a rotor. The spring box is provided with an upper and a lower part. The steel wire and the power spring are provided in two parts of the spring box, respectively. The rotor is provided in the middle of the spring box. One ends of the two steel wires are connected and wound around the rotor. The other ends of the two steel wires are provided with earrings. The inner ring ends of the two power springs are penetrated and fixed to the rotor. The other ends of the two power springs are connected to the spring box.

[0009] The buffer mechanism comprises a first-level buffer unit, a second-level buffer layer and a third-level buffer unit, wherein the first-level buffer unit, the second-level buffer layer and the third-level buffer unit are sequentially arranged on the two spring boxes.

[0010] Furthermore, the first-level buffer unit includes a first polygonal rotating block, a second polygonal rotating block, a transmission rod, a first guide cylinder and a second guide cylinder. The first polygonal rotating block and the second polygonal rotating block are each arranged at two ends of the rotor. The first polygonal rotating block and the second polygonal rotating block are arranged at intervals in the vertical direction. A slider is provided on the side wall of the first polygonal rotating block located below. The slider is slidably arranged on the side wall of the first polygonal rotating block. Each of the sliders is connected to the first guide cylinder through the transmission rod. Each of the transmission rods is provided with a plurality of annular magnets. The second guide cylinder is arranged at one end of each of the transmission rods away from the slider. The first guide cylinder is located in the second guide cylinder. Each of the second guide cylinders is provided with a conductor coil.

[0011] Furthermore, the second-level buffer layer includes a polygonal rotation frame and an internal slide groove, the polygonal rotation frame is provided between each of the first polygonal rotation blocks and the second polygonal rotation blocks, a plurality of the internal slide grooves are provided in each of the polygonal rotation frames, one ends of the plurality of internal slide grooves are connected by a polygonal connector, and the other ends of the plurality of internal slide grooves are arranged corresponding to the vertex angles of the polygonal rotation frame, a mass block is provided in each of the internal slide grooves, and both ends of each of the mass blocks are connected to the internal slide groove through a reset spring.

[0012] Furthermore, the third-level buffer unit includes a friction sleeve, an arc-shaped friction block and a motor. Each of the polygonal rotating blocks is provided with the friction sleeve at one end away from the first polygonal rotating block. A plurality of arc-shaped friction blocks are provided, and a plurality of arc-shaped friction blocks are evenly distributed in a circle in each of the friction sleeves. A rotating shaft is provided in the middle position of each friction sleeve, and the rotating shaft is connected to each of the arc-shaped friction blocks through a telescopic rod. The motor is provided above the rotating shaft and connected to the telescopic rod. A plurality of conductor tubes are provided on the circumferential side of each of the motors, and the conductor tubes on two motors are connected by fixed steel bars.

[0013] Furthermore, the inner diameter of the second guide cylinder is larger than the sum of the outer diameters of the transmission rod and the annular magnet.

[0014] Furthermore, each of the conductor tubes located at the top extends from the side wall of the motor to the surrounding areas and bends downward, and the fixed steel bar is arranged at the bottom of the bend of each of the conductor tubes located at the top, and each of the conductor tubes located at the bottom extends from the side wall of the motor to the surrounding areas and is connected to the side wall of the fixed steel bar.

[0015] Furthermore, the transmission mechanism also includes a fixed frame, and a plurality of the fixed frames are arranged on the side walls of the two spring boxes, and the plurality of the fixed frames are evenly distributed around the circumference, and each of the fixed frames is connected to the fixed steel bar.

[0016] Furthermore, the steel wire located at the top and the steel wire located at the bottom are wound around the rotor at opposite angles.

[0017] It can be known from the above technical scheme that, compared with the prior art, the present invention discloses a multi-stage shock-absorbing semi-active magnetoelectric damper with energy recovery and utilization. By setting a fixed steel bar, a transmission mechanism and a buffer mechanism, the acceleration, speed and displacement that need to be slowed down are converted into the displacement of the earring, thereby driving the displacement of the steel wire. When the steel wire is displaced, the fixed frame fixes the spring box to realize the rotation of the rotor relative to the spring box and overcome the extrusion of the power spring and tighten it; in the process of rotation of the rotor, the first buffer unit and the second-level buffer layer also rotate accordingly. When the first-level buffer unit rotates, the magnet follows the displacement of the second guide cylinder, so that current is generated in the conductor coil, thereby hindering the displacement of the magnet. When the second-level buffer slot rotates, due to The increase in rotational inertia realizes the buffering effect, and since the electric energy generated by the first-stage buffer unit can provide the electric energy to drive the third-stage buffer unit, the friction sleeve of the third-stage buffer unit rotates with the gear, and the arc-shaped friction block and the friction sleeve driven by electric energy consume friction energy to realize the buffering effect, thereby meeting the requirements of multi-order semi-active control; when the earring moves back, the reaction force of the power spring in the spring box restores it to its original state, driving the rotor to rotate and retract the steel wire into the spring box; the buffering force can be automatically adjusted from the aspects of acceleration, speed, displacement, etc. according to the vibration of the external structure, and the electric energy generated inside the device can be recycled and utilized autonomously to further provide buffering capacity for the device, and it has the multi-order semi-active function of mixed control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a multi-stage vibration-absorbing semi-active magnetoelectric damper with energy recovery provided by the present invention;

[0020] Figure 2 A schematic diagram of the structure of the transmission mechanism provided by the present invention;

[0021] Figure 3 A schematic diagram of the structure of the first-level buffer unit provided by the present invention;

[0022] Figure 4 A schematic diagram of the internal structure of the first-level buffer unit provided by the present invention;

[0023] Figure 5 A schematic diagram of the structure of the second buffer layer provided by the present invention;

[0024] Figure 6 A schematic diagram of the structure of the third-level buffer unit provided by the present invention;

[0025] Figure 7 This is a schematic structural diagram of the power spring provided by the present invention.

[0026] Among them: 1 is a transmission mechanism; 11 is a spring box; 12 is a power spring; 13 is a steel wire; 14 is a rotor; 15 is an earring; 16 is a fixed frame; 2 is a first-stage buffer unit; 21 is a first polygonal rotating block; 22 is a second polygonal rotating block; 23 is a transmission rod; 24 is a first guide cylinder; 25 is a second guide cylinder; 26 is a slider; 27 is a ring magnet; 28 is a conductor coil; 3 is a second-stage buffer layer; 31 is a polygonal rotating frame; 32 is an internal slide groove; 33 is a polygonal connector; 34 is a mass block; 35 is a reset spring; 4 is a third-stage buffer unit; 41 is a friction sleeve; 42 is an arc-shaped friction block; 43 is a motor; 44 is a rotating shaft; 45 is a telescopic rod; 46 is a conductor tube; 5 is a fixed steel bar. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-7 The embodiment of the present invention discloses a multi-order vibration-absorbing semi-active magnetoelectric damper with energy recovery, comprising:

[0029] The transmission mechanism 1 comprises a spring box 11, a power spring 12, a steel wire 13 and a rotor 14. The spring box 11 is provided with an upper and a lower part. The steel wire 13 and the power spring 12 are respectively provided in two parts of the spring box 11 in the upper and lower parts. The rotor 14 is provided in the middle part of the spring box 11. One ends of the two steel wires 13 are connected and wound around the rotor 14. The other ends of the two steel wires 13 are provided with earrings 15. The inner ring ends of the two power springs 12 are penetrated and fixed to the rotor 14. The other ends of the two power springs 12 are connected to the spring box 11. The displacement of the steel wire 13 can drive the rotor 14 to rotate. When the rotor 14 rotates, the power spring 12 can be tightened. When the steel wire 13 is displaced back, the power spring 12 is relaxed to make the rotor 14 rotate, thereby retracting the steel wire 13 and making it rewound around the rotor 14.

[0030] The buffer mechanism comprises a first-stage buffer unit 2 , a second-stage buffer layer 3 and a third-stage buffer unit 4 . The first-stage buffer unit 2 , the second-stage buffer layer 3 and the third-stage buffer unit 4 are sequentially arranged on two spring boxes 11 .

[0031] In this embodiment, the first-stage buffer unit 2 includes a first polygonal rotating block 21, a second polygonal rotating block 22, a transmission rod 23, a first guide cylinder 24 and a second guide cylinder 25. The first polygonal rotating block 21 and the second polygonal rotating block 22 are both arranged at two ends of the rotor 14. The first polygonal rotating block 21 and the second polygonal rotating block 22 are arranged at intervals in the vertical direction. A slider 26 is provided on the side wall of the first polygonal rotating block 21 located below. The slider 26 is slidably arranged on the side wall of the first polygonal rotating block 21. Each slider 26 is driven by a transmission rod. The rod 23 is connected to the first guide cylinder 24, and each transmission rod 23 is provided with a plurality of annular magnets 27. The second guide cylinder 25 is arranged at one end of each transmission rod 23 away from the slider 26. The first guide cylinder 24 is located in the second guide cylinder 25, and each second guide cylinder 25 is provided with a conductor coil 28. The slider 26 and the transmission rod 23 can slide on the first guide cylinder 24 to realize the radial displacement of the slider 26. The annular magnet 27 can slide with the transmission rod 23 and cut the conductor coil 28 on the second guide cylinder 25, generate eddy current damping force, and generate current in the conductor coil 28.

[0032] In this embodiment, the second-level buffer layer 3 includes a polygonal rotation frame 31 and an internal slide groove 32. A polygonal rotation frame 31 is provided between each first polygonal rotation block 21 and the second polygonal rotation block 22. A plurality of internal slide grooves 32 are provided in each polygonal rotation frame 31. One ends of the plurality of internal slide grooves 32 are connected by a polygonal connector 33, and the other ends of the plurality of internal slide grooves 32 are arranged corresponding to the vertex angles of the polygonal rotation frame 31. A mass block 34 is provided in each internal slide groove 32. Both ends of each mass block 34 are connected to the internal slide groove 32 by a reset spring 35. The mass block 34 connected by the reset spring 35 slides in the internal slide groove 32 as the polygonal rotation frame 31 rotates to adapt to the adaptive change of the rotational inertia of the structure during vibration. The reset spring 35 provides buffering for the mass block 34 while enabling the mass block 34 to have a reset capability.

[0033] In this embodiment, the third-stage buffer unit 4 includes a friction sleeve 41, an arc-shaped friction block 42 and a motor 43. Each polygonal rotating block is provided with a friction sleeve 41 at one end away from the first polygonal rotating block 21. A plurality of arc-shaped friction blocks 42 are provided, and a plurality of arc-shaped friction blocks 42 are evenly distributed in each friction sleeve 41 in a circular shape. A rotating shaft 44 is provided at the middle position of each friction sleeve 41. The rotating shaft 44 is connected to each arc-shaped friction block 42 through a telescopic rod 45. The motor 43 is provided above the rotating shaft 44, and the motor 43 is connected to the telescopic rod 45. A plurality of arc-shaped friction blocks 42 are provided on the circumferential side of each motor 43. The conductor tube 46, the conductor tubes 46 on the two motors 43 are connected by a fixed steel bar 5; the conductor tube 46 connects the motor 43 and the fixed steel bar 5, fixes the motor 43 and at the same time supplies the current generated by the conductor coil 28 to the power supply 43 to work normally; a gap is set between the arc friction block 42 and the friction sleeve 41, the arc friction block 42 is connected to the telescopic rod 45, the telescopic rod 45 is placed in the rotating shaft 44, and can be extended from the rotating shaft 44 under the drive of the motor 43 to make the arc friction block 42 contact with the friction sleeve 41, and the friction sleeve 41 generates friction when rotating with the second buffer layer to realize friction energy consumption.

[0034] In this embodiment, the inner diameter of the second guide cylinder 25 is larger than the sum of the outer diameters of the transmission rod 23 and the annular magnet 27 , so as to prevent the transmission rod 23 from colliding with the second guide cylinder 25 when sliding.

[0035] In this embodiment, each conductor tube 46 located at the top extends from the side wall of the motor 43 to the surrounding areas and bends downward, a fixed steel bar 5 is provided at the bottom of the bend of each conductor tube 46 located at the top, and each conductor tube 46 located at the bottom extends from the side wall of the motor 43 to the surrounding areas and is connected to the side wall of the fixed steel bar 5.

[0036] In this embodiment, the transmission mechanism 1 further includes a fixing frame 16 , which is disposed on the side walls of the two spring boxes 11 . The fixing frames 16 are evenly distributed around the circumference, and each fixing frame 16 is connected to the fixing steel bar 5 , so as to fix the spring box 11 .

[0037] In this embodiment, the upper steel wire 13 and the lower steel wire 13 are wound around the rotor 14 at opposite angles.

[0038] In addition, in this embodiment, a slide groove is provided on the edge of the polygonal rotating block, the slider 26 is placed in the slide groove and connected to the transmission rod 23, the first guide cylinder 24 is sleeved inside the transmission rod 23, and the end of the first guide cylinder 24 connected to the transmission rod 23 is enlarged to ensure that the first guide cylinder 24 and the second guide cylinder 25 are always connected.

[0039] The inner surface of the friction sleeve 41 is a rough friction surface. A certain gap is left between the arc-shaped friction block 42 and the friction sleeve 41. The arc-shaped friction block 42 is connected to the telescopic rod 45. The telescopic rod 45 is connected to the rotating shaft 44 and can have a certain radial displacement inside the rotating shaft 44 to realize the telescopic function of the telescopic rod 45. The motor 43 is fixed to the fixed steel bar 5 through the conductor tube 46 and provides the motor 43 with the electrical energy required for work. The bottom surface of the motor 43 is connected to the rotating shaft 44 to ensure that the arc-shaped friction block 42, the telescopic rod 45, the rotating shaft 44, and the motor 43 will not rotate, and at the same time provide power drive for the rotating shaft 44 to realize the displacement requirement of the telescopic rod 45.

[0040] Specific use process

[0041] When subjected to an earthquake,

[0042] Transmission structure changes: the two earrings 15 connected on both sides of the structure shift with the vibration of the structure. When the structure shifts to one side, the earrings 15 drive the steel wire 13 to shift with the structure. During the shifting process, the steel wire 13 pulls the rotor 14 to rotate. Since the power spring 12 has an initial state of outward expansion, the power spring 12 placed in the spring box 11 will be squeezed. When the rotor 14 rotates, it will overcome the squeezing of the power spring 12 and drive the inner ring of the power spring 12 to rotate and tighten it inward around the rotor 14. When the structure moves back, the earrings 15 move back with the structure, and the reaction force on the power spring 12 will drive the rotor 14 to rotate in the opposite direction. While the power spring 12 relaxes outward, the rotor 14 pulls back the steel wire 13 to rewind it around the rotor 14. When the structure moves to the other side, the earrings 15 on the other side work.

[0043] Changes in the first-stage buffer unit 2: The rotor 14 rotates, and the first polygonal rotating block 21 and the second polygonal rotating block 22 in the first-stage buffer unit 2 rotate accordingly during the rotation of the rotor 14. Since the slider 26 in the edge groove of the first polygonal rotating block 21 is connected to the transmission rod 23, it will not rotate with the gear. When the first polygonal rotating block 21 and the second polygonal rotating block 22 rotate, the slider 26 pushes the transmission rod 23 to slide along the first guide cylinder 24, so as to realize the radial displacement of the slider 26 from the concave corner to the convex corner of the first polygonal rotating block 21, thereby driving the annular magnet 27 on the transmission rod 23. During the movement, the annular magnet 27 will cut the magnetic flux lines of the conductor coil 28 on the second guide cylinder 25. As the magnet gradually enters the coil, the conductor coil 28 will generate a magnetic field opposite to the original magnetic field to hinder the increase of the magnetic flux, that is, it has a repulsive force on the direction of movement of the magnet. At the same time, the induced electromotive force generated by the electromagnetic field in the conductor coil 28 will generate current. The change in magnetic flux and the magnitude of the generated current are related to the speed of the annular magnet 27 moving in the conductor coil 28, and the conductor coil 28 has bidirectional conductivity to adapt to the problem of different current directions generated by the reciprocating motion of the magnet. The first-level buffer unit 2 is a speed-controlled damper;

[0044] Changes in the second-stage buffer layer 3: the polygonal rotating frame 31 rotates with the first-stage buffer unit 2, and the mass block 34 in the internal slide groove 32 thereof slides in the internal slide groove 32 as it rotates to realize adaptive change of the rotational inertia with structural vibration, so as to meet the inertia enhancement requirements under different vibrations. At the same time, the reset spring 35 provides buffering and self-reset capabilities for the mass block 34, so that the mass block 34 does not directly collide with the internal slide groove 32 during vibration, and can also return to its original state when the vibration stops. The second-stage buffer layer 3 is related to the acceleration generated by the rotor 14, that is, a damper controlled by acceleration;

[0045] Changes in the third-level buffer unit 4: the conductor tube 46 recycles the electric energy generated by the first-level buffer unit to supply the power supply motor 43, and the current size is related to the moving speed of the annular magnet 27 in the conductor coil 28. When the motor 43 is working, the retractable rod 45 in the rotating shaft 44 is extended to make the arc-shaped friction block 42 fit with the friction sleeve 41. The greater the current, the tighter the fit between the arc-shaped friction block 42 and the friction sleeve 41. Since the friction sleeve 41 rotates with the multilateral rotating frame, the friction sleeve 41 and the arc-shaped friction block 42 rotate relative to each other, thereby generating friction energy consumption. The third-level buffer unit 4 is related to speed and displacement, that is, it is a speed and displacement controlled damper.

[0046] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-stage vibration-absorbing semi-active magnetoelectric damper with energy recovery, characterized in that: include: The transmission mechanism comprises a spring box, a power spring, a steel wire and a rotor. The spring box is provided with an upper and a lower part. The steel wire and the power spring are provided in two parts of the spring box, respectively. The rotor is provided in the middle of the spring box. One ends of the two steel wires are connected and wound around the rotor. The other ends of the two steel wires are provided with earrings. The inner ring ends of the two power springs are penetrated and fixed to the rotor. The other ends of the two power springs are connected to the spring box. The buffer mechanism comprises a first-level buffer unit, a second-level buffer layer and a third-level buffer unit, wherein the first-level buffer unit, the second-level buffer layer and the third-level buffer unit are sequentially arranged on the two spring boxes.

2. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 1 is characterized in that: The first-level buffer unit includes a first polygonal rotating block, a second polygonal rotating block, a transmission rod, a first guide cylinder and a second guide cylinder. The first polygonal rotating block and the second polygonal rotating block are each arranged at two ends of the rotor. The first polygonal rotating block and the second polygonal rotating block are arranged at intervals in the vertical direction. A slider is provided on the side wall of the first polygonal rotating block located below. The slider is slidably arranged on the side wall of the first polygonal rotating block. Each of the sliders is connected to the first guide cylinder through the transmission rod. Each of the transmission rods is provided with a plurality of annular magnets. The second guide cylinder is arranged at one end of each of the transmission rods away from the slider. The first guide cylinder is located in the second guide cylinder. Each of the second guide cylinders is provided with a conductor coil.

3. The energy-recoverable multi-stage damping semi-active magnetoelectric damper according to claim 2 is characterized in that: The second-level buffer layer includes a polygonal rotation frame and an internal slide groove. The polygonal rotation frame is provided between each of the first polygonal rotation blocks and the second polygonal rotation block. A plurality of internal slide grooves are provided in each of the polygonal rotation frames. One ends of the plurality of internal slide grooves are connected by a polygonal connector, and the other ends of the plurality of internal slide grooves are arranged corresponding to the vertex angles of the polygonal rotation frame. A mass block is provided in each of the internal slide grooves, and both ends of each of the mass blocks are connected to the internal slide groove through a reset spring.

4. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 3 is characterized in that: The third-level buffer unit includes a friction sleeve, an arc-shaped friction block and a motor. The friction sleeve is provided at one end of each polygonal rotating block away from the first polygonal rotating block. A plurality of arc-shaped friction blocks are provided, and a plurality of arc-shaped friction blocks are evenly distributed in a circle in each friction sleeve. A rotating shaft is provided at the middle position of each friction sleeve, and the rotating shaft is connected to each arc-shaped friction block through a telescopic rod. The motor is arranged above the rotating shaft and connected to the telescopic rod. A plurality of conductor tubes are provided on the circumferential side of each motor, and the conductor tubes on two motors are connected by a fixed steel bar.

5. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 3 is characterized in that: The inner diameter of the second guide cylinder is larger than the sum of the outer diameters of the transmission rod and the annular magnet.

6. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 4, characterized in that: Each of the conductor tubes located at the top extends from the side wall of the motor to the surrounding areas and bends downward, and the fixed steel bar is arranged at the bottom of the bend of each of the conductor tubes located at the top, and each of the conductor tubes located at the bottom extends from the side wall of the motor to the surrounding areas and is connected to the side wall of the fixed steel bar.

7. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 6, characterized in that: The transmission mechanism also includes a fixed frame, and a plurality of the fixed frames are arranged on the side walls of the two spring boxes. The plurality of fixed frames are evenly distributed around the circumference, and each of the fixed frames is connected to the fixed steel bar.

8. The energy-recoverable multi-stage vibration-absorbing semi-active magnetoelectric damper according to claim 1 is characterized in that: The steel wire located at the top and the steel wire located at the bottom are wound around the rotor at opposite angles.

Images