Energy-recycling multi-stage shock-absorbing semi-active magneto-resistive damper

Abstract

The application discloses a multi-stage shock-absorbing semi-active magneto-resistance damper capable of recycling energy and relates to the technical field of engineering structure shock-absorbing dampers. The damper comprises a transmission mechanism, a buffer mechanism and the like. The transmission mechanism comprises a spring box, a power spring, steel wires and a rotor. The spring box is provided with upper and lower parts. The steel wires and the power spring are arranged in the upper and lower spring boxes respectively. The rotor is arranged in the middle part of the spring box. The two ends of the two steel wires are connected to and wound around the rotor. The other ends of the two steel wires are provided with ear rings. The inner ring ends of the two power springs are fixedly penetrated through the rotor. 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. The first-stage buffer unit, the second-stage buffer layer and the third-stage buffer unit are sequentially arranged on the two spring boxes. The damper can realize multi-stage mixed control of acceleration, speed and displacement, and can meet the adaptive shock-absorbing requirement of the engineering structure during vibration.

Description

Technical Field

[0001] This invention relates to the field of vibration damping devices for engineering structures, and more specifically to a multi-stage semi-active magnetoresistive damper with recyclable energy. Background Technology

[0002] Building structures frequently withstand various dynamic loads, including wind loads, vehicle loads, and pedestrian loads. The impact of earthquakes on building structures has received widespread attention. With the acceleration of urbanization, the safety performance of various infrastructure and building structures, especially those in earthquake-prone areas, is increasingly valued to ensure the safety of people's lives and property. To improve the seismic performance of building structures, various related structural control technologies have been developed in recent decades to prevent or mitigate earthquake damage, including active, passive, and semi-active control methods.

[0003] An active control system is based on a certain control algorithm. Under the excitation of a large amount of external energy, it actively adjusts its damping characteristics according to a pre-set control strategy to achieve 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 effect. However, the system is complex, expensive and consumes a lot of energy. Compared to active control systems, passive control systems do not rely on external energy input and are easy to install, thus gaining widespread application. Passive control systems are further divided into displacement, velocity, and acceleration-related types. Currently, traditional passive control damping devices include metal dampers, liquid viscous dampers, and inertial capacitive systems. However, all of these devices control a single response to an earthquake. For example, metal dampers dissipate energy based on the reciprocating deformation of the damper under seismic loading; the energy dissipation of viscous dampers is related to the deformation velocity of the structure under seismic loading; and inertial capacitive systems can only reduce the seismic response of the structure based on the deformation acceleration fed back by the structure under seismic loading. Although passive control systems are widely used, their single control capability can only ensure the safety of the structure under seismic loading, and their ability to adjust for complex vibrations is limited. Furthermore, because the stiffness distribution of the damping path of the device is fixed, it cannot achieve the requirement of adaptive damping control based on the structural response. Semi-active control is a type of parametric control. The control process depends on the structural response and external excitation information, and reduces the structural response by changing parameters such as stiffness or damping of the structure in real time with a small amount of energy. Semi-active control requires minimal external energy input; the actuators that apply the control force only need a small amount of energy adjustment to actively utilize the reciprocating relative deformation or velocity of the structure to achieve optimal active control. Considering the problems of active and passive control systems, the advantages of semi-active control systems are combined.

[0004] Therefore, how to provide a novel damper capable of multi-stage mixed control of acceleration, velocity, and displacement, enabling engineering structures to achieve adaptive vibration reduction requirements during vibration, and an energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a multi-stage semi-active magnetoresistive damper with recyclable energy, which aims to solve one of the problems in the above-mentioned background technology. It is a novel damper that can achieve multi-stage mixed control of acceleration, velocity and displacement, so that engineering structures can achieve adaptive vibration reduction requirements when vibrating.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-stage semi-active magnetoresistive damper with recyclable energy includes:

[0008] The transmission mechanism includes a spring box, a power spring, steel wires, and a rotor. The spring box is divided into upper and lower parts. Two steel wires and two power springs are respectively disposed in the upper and lower parts of the spring box. The rotor is disposed in the middle of the spring box. One end of each of the two steel wires is connected to and wound around the rotor. The other end of each of the two steel wires is provided with an ear. The inner ring ends of each of the two power springs are fixed to the rotor. The other ends of each of the two power springs are connected to the spring box.

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

[0010] Furthermore, the first-stage 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. Two of each of the first and second polygonal rotating blocks are disposed at both ends of the rotor. The first and second polygonal rotating blocks are spaced apart in the vertical direction. A slider is provided on the side wall of the lower first polygonal rotating block, and the slider is slidably disposed on the side wall of the first polygonal rotating block. Each slider is connected to the first guide cylinder via the transmission rod. Each transmission rod is provided with several annular magnets. The second guide cylinder is disposed at the end of each transmission rod away from the slider, and the first guide cylinder is located inside the second guide cylinder. Each second guide cylinder is provided with a conductor coil.

[0011] Furthermore, the second-level buffer layer includes a polygonal rotating frame and internal slides. The polygonal rotating frame is provided between each of the first and second polygonal rotating blocks. Multiple internal slides are provided in each polygonal rotating frame. One end of each internal slide is connected by a polygonal connector, and the other end of each internal slide is provided at the top corner of the polygonal rotating frame. A mass block is provided in each internal slide, and both ends of each mass block are connected to the internal slide through a return spring.

[0012] Furthermore, the third-level buffer unit includes a friction sleeve, an arc-shaped friction block, and a motor. Each polygonal rotating block has a friction sleeve at one end away from the first polygonal rotating block. Multiple arc-shaped friction blocks are arranged circumferentially within each friction sleeve. A rotating shaft is located at the center of each friction sleeve. The rotating shaft is connected to each arc-shaped friction block via a telescopic rod. The motor is located above the rotating shaft and is connected to the telescopic rod. Multiple conductor tubes are arranged around the periphery of each motor. The conductor tubes on two motors are connected by a fixed steel strip.

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

[0014] Furthermore, each of the upper conductor tubes extends outwards from the side wall of the motor and bends downwards, with the fixing steel strip disposed at the bottom of the bend of each upper conductor tube, and each of the lower conductor tubes extends outwards from the side wall of the motor and connects to the side wall of the fixing steel strip.

[0015] Furthermore, the transmission mechanism also includes a fixing frame, with multiple fixing frames disposed on the side walls of the two spring boxes. The multiple fixing frames are evenly distributed circumferentially, and each fixing frame is connected to the fixing steel bar.

[0016] Furthermore, the angle at which the upper steel wire is wound around the rotor is opposite to that of the lower steel wire.

[0017] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a multi-stage shock-absorbing semi-active magnetoresistive damper with recyclable energy. By setting a fixed steel bar, a transmission mechanism, and a buffer mechanism, the acceleration, velocity, and displacement that need to be slowed down are converted into the displacement of the earring, thereby driving the steel wire to move. When the steel wire moves, the fixed frame fixes the spring box, realizing the rotation of the rotor relative to the spring box and overcoming the compression of the power spring and tightening it. During the rotation of the rotor, the first buffer unit and the second buffer layer also rotate. When the first buffer unit rotates, the magnet follows the displacement of the second guide cylinder, causing a current to be generated in the conductor coil, which in turn hinders the displacement of the magnet. When the second buffer groove rotates, due to the... The increased moment of inertia achieves a buffering effect, and the electrical energy generated by the first-stage buffer unit can provide the electrical 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 driven by electrical energy rubs against the friction sleeve to achieve a buffering effect, meeting the requirements of multi-stage semi-active control. When the earring moves back, the reaction force of the power spring in the spring box causes it to return to its original shape, driving the rotor to rotate and retract the steel wire into the spring box. The buffering force can be automatically adjusted according to the vibration of the external structure in terms of acceleration, speed, and displacement. At the same time, the electrical energy generated inside the device can be autonomously recovered and reused to further provide buffering capacity for the device, which has a multi-stage semi-active function of mixed control. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper provided by the present invention;

[0020] Figure 2 This is a schematic diagram 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 This is 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-level 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 A schematic diagram of the structure of the dynamic spring provided by the present invention.

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

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] See Figures 1-7 This invention discloses a multi-stage semi-active magnetoresistive damper with recyclable energy, comprising:

[0029] The transmission mechanism 1 includes a spring box 11, a power spring 12, a steel wire 13, and a rotor 14. The spring box 11 is divided into upper and lower parts. Two steel wires 13 and two power springs 12 are respectively installed in the upper and lower parts of the spring box 11. The rotor 14 is located in the middle of the spring box 11. One end of each of the two steel wires 13 is connected to and wound around the rotor 14. The other end of each of the two steel wires 13 is provided with an ear loop 15. The inner ring ends of each of the two power springs 12 are fixed through the rotor 14. The other end of each of the two power springs 12 is 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, it can tighten the power spring 12. When the steel wire 13 moves back, the power spring 12 relaxes, causing the rotor 14 to rotate back and thus retract the steel wire 13 so that it is rewound around the rotor 14.

[0030] The buffer mechanism includes a first-level buffer unit 2, a second-level buffer layer 3, and a third-level buffer unit 4, which 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. Two of each of the first and second polygonal rotating blocks 21 and 22 are disposed at both ends of the rotor 14. The first and second polygonal rotating blocks 21 and 22 are spaced apart vertically. A slider 26 is provided on the side wall of the lower first polygonal rotating block 21. The slider 26 is slidably disposed 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. Each transmission rod 23 is provided with several annular magnets 27. The second guide cylinder 25 is located at the end of each transmission rod 23 away from the slider 26. The first guide cylinder 24 is located inside the second guide cylinder 25. 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 magnets 27 can slide with the transmission rod 23 and cut the conductor coils 28 on the second guide cylinder 25 to generate eddy current damping force and generate current in the conductor coils 28.

[0032] In this embodiment, the second-level buffer layer 3 includes a polygonal rotating frame 31 and an internal slide 32. A polygonal rotating frame 31 is provided between each first polygonal rotating block 21 and the second polygonal rotating block 22. Multiple internal slides 32 are provided in each polygonal rotating frame 31. One end of the multiple internal slides 32 is connected by a polygonal connector 33, and the other end of the multiple internal slides 32 is provided at the top corner of the polygonal rotating frame 31. A mass block 34 is provided in each internal slide 32. Both ends of each mass block 34 are connected to the internal slide 32 by a return spring 35. The mass block 34 connected by the return spring 35 slides in the internal slide 32 as the polygonal rotating frame 31 rotates, so as to adapt to the structure to change its moment of inertia adaptively when vibrating. The return spring 35 provides buffering for the mass block 34 and enables the mass block 34 to have a restoring ability.

[0033] In this embodiment, the third-stage buffer unit 4 includes a friction sleeve 41, arc-shaped friction blocks 42, and a motor 43. Each polygonal rotating block has a friction sleeve 41 at the end away from the first polygonal rotating block 21. Multiple arc-shaped friction blocks 42 are arranged circumferentially within each friction sleeve 41. 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 via a telescopic rod 45. The motor 43 is located above the rotating shaft 44 and is connected to the telescopic rod 45. Multiple motors 43 are arranged around their periphery. The conductor tube 46 is connected to the two motors 43 by a fixed steel bar 5. The conductor tube 46 connects the motor 43 and the fixed steel bar 5, and while fixing the motor 43, it supplies the current generated by the conductor coil 28 to power the motor 43 to work normally. There is a gap 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 placed in the rotating shaft 44. Under the drive of the motor 43, it can extend in the rotating shaft 44 to make the arc-shaped friction block 42 contact the friction sleeve 41. The friction sleeve 41 generates friction when it rotates with the second buffer layer to achieve friction energy dissipation.

[0034] In this embodiment, the inner diameter of the second guide cylinder 25 is greater than the sum of the outer diameters of the transmission rod 23 and the annular magnet 27; this prevents the transmission rod 23 from colliding with the second guide cylinder 25 when it slides.

[0035] In this embodiment, each conductor tube 46 located at the top extends outward from the side wall of the motor 43 and bends downward. A fixing steel strip 5 is provided at the bottom of the bend of each conductor tube 46 located at the top. Each conductor tube 46 located at the bottom extends outward from the side wall of the motor 43 and is connected to the side wall of the fixing steel strip 5.

[0036] In this embodiment, the transmission mechanism 1 further includes a fixing frame 16. Multiple fixing frames 16 are disposed on the side walls of the two spring boxes 11. The multiple fixing frames 16 are evenly distributed in a circle, and each fixing frame 16 is connected to the fixing steel strip 5 to fix the spring box 11.

[0037] In this embodiment, the angle at which the upper steel wire 13 is wound around the rotor 14 is opposite to that of the lower steel wire 13.

[0038] In addition, in this embodiment, the edge of the polygonal rotating block is provided with a sliding groove, the slider 26 is placed in the sliding 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 always remain 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 be radially displaced 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 operation. 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. At the same time, it provides power to the rotating shaft 44 to realize the displacement requirements of the telescopic rod 45.

[0040] Specific usage process

[0041] When subjected to earthquake action

[0042] Transmission structure change: The two earrings 15 connected to 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 shift, 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 will be compressed when placed in the spring box 11. When the rotor 14 rotates, it will overcome the compression 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. 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, it pulls the steel wire 13 back to the rotor 14 so that it rewound onto the rotor 14. When the structure moves to the other side, the earrings 15 on the other side will work.

[0043] Changes in the first-stage buffer unit 2: The rotor 14 rotates. During the rotation of the rotor 14, the first polygonal rotating block 21 and the second polygonal rotating block 22 in the first-stage buffer unit 2 rotate accordingly. 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, realizing 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 its movement, the annular magnet 27 cuts the magnetic field lines of the conductor coil 28 on the second guide cylinder 25. As the magnet gradually enters the coil, the conductor coil 28 generates a magnetic field opposite to the original magnetic field, thus hindering the increase of magnetic flux and exerting a repulsive force on the direction of the magnet's movement. Simultaneously, the induced electromotive force generated in the conductor coil 28 by this electromagnetic field produces a current. The change in magnetic flux and the magnitude of the generated current are both related to the moving speed of the annular magnet 27 within the conductor coil 28. Furthermore, the conductor coil 28 has bidirectional conductivity to accommodate the different current directions generated by the reciprocating motion of the magnet. The first-stage buffer unit 2 is a speed-controlled damper.

[0044] The second-level buffer layer 3 changes as the polygonal rotating frame 31 rotates with the first-level buffer unit 2. The mass block 34 in the internal slide 32 slides within the internal slide 32 as it rotates, thus adaptively changing the moment of inertia with structural vibration to meet the inertia enhancement requirements under different vibrations. At the same time, the reset spring 35 provides buffering and self-resetting capabilities for the mass block 34, so that the mass block 34 does not directly collide with the internal slide 32 during vibration and can return to its original state after the vibration stops. The second-level buffer layer 3 is related to the acceleration generated by the rotor 14, that is, it is a damper controlled by acceleration.

[0045] The changes in the third-level buffer unit 4 are as follows: the conductor tube 46 recycles the electrical energy generated by the first-level buffer unit to power the motor 43. The magnitude of the current is related to the moving speed of the ring magnet 27 in the conductor coil 28. When the motor 43 is working, the telescopic rod 45 in the rotating shaft 44 extends, so that the arc-shaped friction block 42 and the friction sleeve 41 are in contact. The greater the current, the tighter the arc-shaped friction block 42 and the friction sleeve 41 are in contact. Since the friction sleeve 41 follows the polygonal rotating frame, the friction sleeve 41 and the arc-shaped friction block 42 rotate relative to each other, resulting in friction and energy consumption. The third-level buffer unit 4 is related to speed and displacement, that is, it is a damper for speed and displacement control.

[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-stage semi-active magnetoresistive damper with recyclable energy, characterized in that, include: The transmission mechanism includes a spring box, a power spring, steel wires, and a rotor. The spring box is divided into upper and lower parts. Two steel wires and two power springs are respectively disposed in the upper and lower parts of the spring box. The rotor is disposed in the middle of the spring box. One end of each of the two steel wires is connected to and wound around the rotor. The other end of each of the two steel wires is provided with an ear. The inner ring ends of each of the two power springs are fixed to the rotor. The other ends of each of the two power springs are connected to the spring box. The buffer mechanism includes a first-level buffer unit, a second-level buffer layer, and a third-level buffer unit, which are sequentially disposed on the two spring boxes. The first-stage 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. Two of each of the first and second polygonal rotating blocks are disposed at both ends of the rotor. The first and second polygonal rotating blocks are spaced apart in the vertical direction. A slider is provided on the side wall of the lower first polygonal rotating block. The slider is slidably disposed on the side wall of the first polygonal rotating block. Each slider is connected to the first guide cylinder via the transmission rod. Each transmission rod is provided with several annular magnets. The second guide cylinder is disposed at the end of each transmission rod away from the slider. The first guide cylinder is located inside the second guide cylinder. Each second guide cylinder is provided with a conductor coil. The second-level buffer layer includes a polygonal rotating frame and internal slides. The polygonal rotating frame is provided between each first polygonal rotating block and the second polygonal rotating block. Multiple internal slides are provided in each polygonal rotating frame. One end of the multiple internal slides is connected by a polygonal connector. The other end of the multiple internal slides is provided corresponding to the top corner of the polygonal rotating frame. A mass block is provided in each internal slide. Both ends of each mass block are connected to the internal slide through a return spring. The third-level buffer unit includes a friction sleeve, an arc-shaped friction block, and a motor. Each polygonal rotating block has a friction sleeve at one end away from the first polygonal rotating block. Multiple arc-shaped friction blocks are arranged circumferentially within each friction sleeve. A rotating shaft is located at the center of each friction sleeve. The rotating shaft is connected to each arc-shaped friction block via a telescopic rod. The motor is located above the rotating shaft and is connected to the telescopic rod. Multiple conductor tubes are arranged around the periphery of each motor. The conductor tubes on two motors are connected by a fixed steel strip.

2. The energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper according to claim 1, characterized in that, The inner diameter of the second guide cylinder is greater than the sum of the outer diameters of the transmission rod and the annular magnet.

3. The energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper according to claim 2, characterized in that, Each of the upper conductor tubes extends outwards from the side wall of the motor and bends downwards. The fixing steel bar is provided at the bottom of the bend of each of the upper conductor tubes. Each of the lower conductor tubes extends outwards from the side wall of the motor and connects to the side wall of the fixing steel bar.

4. The energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper according to claim 3, characterized in that, The transmission mechanism also includes a fixing frame, and multiple fixing frames are provided on the side walls of the two spring boxes. The multiple fixing frames are evenly distributed in a circle, and each fixing frame is connected to the fixing steel bar.

5. The energy-recoverable multi-stage vibration-damping semi-active magnetoresistive damper according to claim 1, characterized in that, The angle at which the upper steel wire is wound around the rotor is opposite to that of the lower steel wire.

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