Shock absorbers and ships

Abstract

The present invention provides a shock absorber and a ship, wherein the shock absorber comprises: an air spring, an electromagnetic assembly, a magnetic component and a controller, wherein the electromagnetic assembly is arranged on the inner side of the air spring, and the top surface of the air spring is higher than the top surface of the electromagnetic assembly; the electromagnetic assembly comprises a first electromagnet and a second electromagnet, the first electromagnet is arranged above the second electromagnet, and there is a gap between the first electromagnet and the second electromagnet; the magnetic component is vertically connected to the inner side of the air spring and is located between the first electromagnet and the second electromagnet; the controller is used to adjust the current of the first electromagnet and / or the second electromagnet when the air spring is subjected to an action force, so that the magnetic component is located in an intermediate position between the first electromagnet and the second electromagnet; the present invention combines passive vibration isolation and active vibration isolation, has fast response, high reliability, and large load-bearing capacity, realizes broadband vibration isolation, and improves the vibration reduction effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction, and in particular to a vibration reducer and a ship. Background Art

[0002] The structural noise generated by the operation of the ship's main engine is one of the main noises of the ship. Its energy is transmitted through the supporting parts. The use of vibration isolation technology can effectively reduce the structural noise of the ship.

[0003] Vibration isolation can be categorized into two types: active and passive. Passive vibration isolation involves adding passive components to the vibration propagation path to reduce the intensity of the vibration transmitted to the receiving structure. For passive vibration isolation of large loads, capsule air springs can be used. However, air springs have poor resistance to low-frequency interference and may even amplify interference signals near the system's resonant frequency. Active vibration isolation, on the other hand, addresses vibration and noise reduction near low frequencies and resonant frequencies by dynamically adjusting the system's support characteristic parameters using active units (such as active vibration isolators) according to set control rules. However, this approach is complex in structure and consumes a lot of energy. Summary of the Invention

[0004] The present invention provides a vibration absorber and a ship, which are used to solve the problem of poor vibration isolation effect of vibration isolators in the prior art.

[0005] The present invention provides a shock absorber, comprising: an air spring, an electromagnetic assembly, a magnetic component and a controller, wherein the electromagnetic assembly is arranged on the inner side of the air spring, and the top surface of the air spring is higher than the top surface of the electromagnetic assembly; the electromagnetic assembly comprises a first electromagnet and a second electromagnet, the first electromagnet is arranged above the second electromagnet, and there is a distance between the first electromagnet and the second electromagnet; the magnetic component is vertically connected to the inner side of the air spring and is located between the first electromagnet and the second electromagnet; the controller is used to adjust the current of the first electromagnet and / or the second electromagnet when the air spring is subjected to an action force, so that the magnetic component is located in an intermediate position between the first electromagnet and the second electromagnet.

[0006] According to a vibration absorber provided by the present invention, the electromagnetic assembly includes a fixing piece, and the second electromagnet and the first electromagnet are sequentially sleeved and connected to the fixing piece.

[0007] According to a vibration absorber provided by the present invention, the magnetic member is an annular structure.

[0008] According to a shock absorber provided by the present invention, there are multiple magnetic members, the multiple magnetic members are arranged at intervals along the circumferential direction of the air spring, and the multiple magnetic members are all located between the first electromagnet and the second electromagnet.

[0009] According to the shock absorber provided by the present invention, the magnetic member is connected to the middle position of the air spring in the height direction.

[0010] According to a shock absorber provided by the present invention, the shock absorber further includes a base and a cover plate, the electromagnetic assembly and the air spring are arranged on the base, and the top surface of the air spring is in contact with the cover plate.

[0011] According to a shock absorber provided by the present invention, the shock absorber also includes a first support member and a second support member, the first support member is arranged on the inner side of the air spring, and the second support member is arranged on the outer side of the air spring, the first support member and the second support member are respectively arranged at the upper and lower parts of the air spring, the first support member or the second support member located at the upper part of the air spring is connected to the cover plate, and the second support member or the first support member located at the lower part of the air spring is connected to the base, and the first support member and the second support member are matched to support and fix the air spring.

[0012] According to a shock absorber provided by the present invention, there are a plurality of the first support members and a plurality of the second support members, and the plurality of the first support members and the plurality of the second support members are arranged at intervals along the circumferential direction of the air spring.

[0013] According to a shock absorber provided by the present invention, the shock absorber also includes a displacement monitoring component, which is connected to the controller and is used to detect the distance between the magnetic part and the bottom surface of the first electromagnet and the distance between the magnetic part and the top surface of the second electromagnet; the controller is used to adjust the current of the first electromagnet and / or the second electromagnet based on the displacement information detected by the displacement monitoring component.

[0014] The present invention also provides a ship, comprising the shock absorber described in any one of the above items, and also comprising a hull, wherein the shock absorber is arranged on the hull.

[0015] The shock absorber and ship provided by the present invention realize passive vibration reduction by vertically connecting a magnetic part to the inner side of an air spring, and the magnetic part is located between a first electromagnet and a second electromagnet, when the air spring is subjected to an external force; during the vibration reduction process, the air spring deforms, driving the magnetic part connected to the air spring to move between the first magnet and the second magnet; the controller controls the current of the first magnet to increase and / or the current of the second magnet to decrease, thereby increasing the electromagnetic force of the first magnet and / or reducing the downward electromagnetic force of the second magnet, so that the upward electromagnetic force of the first electromagnet is greater than the downward electromagnetic force of the second electromagnet, thereby causing the magnetic part to return to the middle position between the first electromagnet and the second electromagnet, thereby realizing active vibration isolation; the present invention combines passive vibration isolation with active vibration isolation, has fast response, high reliability, and large load-bearing capacity, realizes broadband vibration isolation, and improves the vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic structural diagram of the shock absorber provided by the present invention being arranged on the hull;

[0018] Reference numerals:

[0019] 1: Air spring; 2: Magnetic part; 3: First electromagnet; 4: Second electromagnet; 5: Fixing part; 6: Base; 7: Cover plate; 8: First support part; 9: Second support part; 10: Hull. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] The following combination Figure 1 The invention describes a shock absorber and a ship.

[0022] The present invention provides a shock absorber comprising: an air spring 1, an electromagnetic assembly, a magnetic component 2 and a controller, wherein the electromagnetic assembly is arranged on the inner side of the air spring 1, and the top surface of the air spring 1 is higher than the top surface of the electromagnetic assembly; the electromagnetic assembly comprises a first electromagnet 3 and a second electromagnet 4, the first electromagnet 3 is arranged above the second electromagnet 4, and there is a distance between the first electromagnet 3 and the second electromagnet 4; the magnetic component 2 is vertically connected to the inner side of the air spring 1 and is located between the first electromagnet 3 and the second electromagnet 4; the controller is used to adjust the current of the first electromagnet 3 and / or the second electromagnet 4 when the air spring 1 is subjected to a force, so that the magnetic component 2 is located in the middle position between the first electromagnet 3 and the second electromagnet 4.

[0023] refer to Figure 1 The shock absorber in this embodiment includes an annular air spring 1 with a chamber containing compressed air, which utilizes the compressibility of the gas to achieve vibration damping. The electromagnetic assembly is located inside the air spring 1, with the top surface of the air spring 1 higher than that of the electromagnetic assembly. Under the influence of external forces, the air spring 1 deforms preferentially.

[0024] The electromagnetic assembly includes a first electromagnet 3 and a second electromagnet 4. The first electromagnet 3 is arranged above the second electromagnet 4, and there is a distance between the first electromagnet 3 and the second electromagnet 4. The first electromagnet 3 is wound with a first coil, and the first coil is energized to form an upward electromagnetic force; the second electromagnet 4 is wound with a second coil, and the second coil is energized to form a downward electromagnetic force.

[0025] The magnetic part 2 is perpendicular to the inner side of the air spring 1. When the air spring 1 is deformed by external force, the magnetic part 2 moves upward or downward with the deformation of the air spring 1. Furthermore, the magnetic part 2 extends toward the direction of the electromagnetic assembly and is placed between the first electromagnet 3 and the second electromagnet 4. When the spring is not subjected to external force, the magnetic part 2 is located in the middle position between the first electromagnet 3 and the second electromagnet 4, that is, the distance between the magnetic part 2 and the bottom surface of the first electromagnet 3 is equal to the distance between the magnetic part 2 and the top surface of the second electromagnet 4, and the current of the coil on the first electromagnet 3 is equal to the current on the second electromagnet 4, that is, the upward electromagnetic force generated by the first electromagnet 3 and the downward electromagnetic force generated by the second electromagnet 4 are equal in magnitude and opposite in direction, and the output active force is zero. The magnetic part 2 is always in the middle position between the first electromagnet 3 and the second electromagnet 4.

[0026] The shock absorber in this embodiment also includes a controller. When the air spring 1 moves downward under the action of an external force, the magnetic part 2 moves downward. At this time, the distance between the magnetic part 2 and the first electromagnet 3 is greater than the distance between the magnetic part 2 and the second electromagnet 4. The controller increases the current of the first coil on the first electromagnet 3, so that the magnetic flux of the first electromagnet 3 increases, and the upward electromagnetic force increases. The upward electromagnetic force on the magnetic part 2 is greater than the downward electromagnetic force, and the magnetic part 2 returns to the middle position between the first electromagnet 3 and the second electromagnet 4, thereby realizing active vibration isolation.

[0027] When the air spring 1 moves downward under the action of external force, the magnetic part 2 moves downward. At this time, the distance between the magnetic part 2 and the first electromagnet 3 is greater than the distance between the magnetic part 2 and the second electromagnet 4. The controller reduces the current of the second coil on the second electromagnet 4, so that the magnetic flux of the second electromagnet 4 is reduced, and the downward electromagnetic force is reduced. The upward electromagnetic force on the magnetic part 2 is greater than the downward electromagnetic force, and the magnetic part 2 returns to the middle position between the first electromagnet 3 and the second electromagnet 4, thereby realizing active vibration isolation.

[0028] When the air spring 1 moves downward under the action of external force, the magnetic part 2 moves downward. At this time, the distance between the magnetic part 2 and the first electromagnet 3 is greater than the distance between the magnetic part 2 and the second electromagnet 4. The controller increases the current of the first coil on the first electromagnet 3, so that the magnetic flux of the first electromagnet 3 increases and the upward electromagnetic force increases. The controller reduces the current of the second coil on the second electromagnet 4, so that the magnetic flux of the second electromagnet 4 decreases and the downward electromagnetic force decreases, so that the upward electromagnetic force on the magnetic part 2 is greater than the downward electromagnetic force, and the magnetic part 2 returns to the middle position between the first electromagnet 3 and the second electromagnet 4, thereby realizing active vibration isolation.

[0029] This embodiment realizes passive vibration reduction by vertically connecting a magnetic part to the inner side of the air spring, and the magnetic part is located between the first electromagnet and the second electromagnet, when the air spring is subjected to an external force; during the vibration reduction process, the air spring deforms, driving the magnetic part connected to the air spring to move between the first magnet and the second magnet; the controller controls the current of the first magnet to increase and / or the current of the second magnet to decrease, thereby increasing the electromagnetic force of the first magnet and / or reducing the downward electromagnetic force of the second magnet, so that the upward electromagnetic force of the first electromagnet is greater than the downward electromagnetic force of the second electromagnet, and then the magnetic part returns to the middle position between the first electromagnet and the second electromagnet, thereby realizing active vibration isolation; the present invention realizes broadband vibration isolation and improves the vibration reduction effect by combining passive vibration isolation and active vibration isolation, with fast response, high reliability and large load-bearing capacity.

[0030] On the basis of the above embodiment, the electromagnetic assembly includes a fixing member 5 , and the second electromagnet 4 and the first electromagnet 3 are sequentially sleeved and connected to the fixing member 5 .

[0031] The fixing part 5 is arranged on the inner side of the air spring 1, and is used to fix the first electromagnet 3 and the second electromagnet 4; specifically, the first electromagnet 3 and the second electromagnet 4 are annular structures, the second electromagnet 4 is sleeved and connected to the bottom of the fixing part 5, and the first electromagnet 3 is sleeved and connected to the top of the fixing part 5. There is a distance between the first electromagnet 3 and the second electromagnet 4, and the magnetic part 2 is placed in the middle position between the first electromagnet 3 and the second electromagnet 4.

[0032] The magnetic part 2 in this embodiment is a ring structure. The magnetic part 2 is arranged on the inner side of the air spring 1, and the outer wall of the magnetic part 2 is connected to the inner wall of the air spring 1. The magnetic part 2 is placed between the first electromagnet 3 and the second electromagnet 4 near the center. When the air spring 1 receives a force, the magnetic part 2 moves between the first electromagnet 3 and the second electromagnet 4 as the air spring 1 deforms.

[0033] In the above embodiment, there are multiple magnetic members 2 , which are spaced apart along the circumferential direction of the air spring 1 , and are all located between the first electromagnet 3 and the second electromagnet 4 .

[0034] The present embodiment provides a plurality of magnetic parts 2, all of which are connected to the inner outer wall surface of the air spring 1, and the plurality of magnetic parts 2 are arranged at intervals along the circumferential direction of the air spring 1, each magnetic part 2 is perpendicular to the inner outer wall surface of the air spring 1, and the magnetic part 2 extends toward the direction of the electromagnetic assembly, and the plurality of magnetic parts 2 are all located between the first electromagnet 3 and the second electromagnet 4. When the air spring 1 is subjected to external force, the plurality of magnetic parts 2 can move between the first electromagnet 3 and the second electromagnet 4 as the air spring 1 deforms.

[0035] In a preferred embodiment, multiple magnetic parts 2 are evenly spaced along the circumferential direction of the air spring 1, and the distance between any two magnetic parts 2 is equal. When an external force acts on any position of the air spring 1, the controller controls the current of the first coil on the first electromagnet 3 and / or the second coil on the second electromagnet 4 so that the magnetic part 2 is located between the first electromagnet 3 and the second electromagnet 4, thereby realizing active vibration reduction.

[0036] Based on the above embodiment, the magnetic member 2 is connected to the middle position in the height direction of the air spring 1. In this embodiment, the magnetic member 2 is connected to the middle position in the height direction of the air spring 1. Correspondingly, the first electromagnet 3 and the second electromagnet 4 are located above and below the magnetic member 2, respectively. When the air spring 1 is passively reducing vibration, when the deformation response of the air spring 1 reaches the middle position, the magnetic member 2 can quickly move between the first electromagnet 3 and the second electromagnet 4, adjusting the electromagnetic force of the first electromagnet 3 and / or the second electromagnet 4, achieving active vibration reduction and improving the vibration reduction effect.

[0037] On the basis of the above embodiment, the shock absorber further includes a base 6 and a cover plate 7 . The electromagnetic assembly and the air spring 1 are arranged on the base 6 , and the top surface of the air spring 1 is in contact with the cover plate 7 .

[0038] refer to Figure 1 The shock absorber also includes a base 6 and a cover plate 7. The electromagnetic assembly and the air spring 1 are arranged between the base 6 and the cover plate 7. The electromagnetic assembly and the air spring 1 are arranged on the base 6. The cover plate 7 is arranged above the air spring 1, and the top surface of the air spring 1 is in contact with the cover plate 7. There is a distance between the top surface of the electromagnetic assembly and the cover plate 7. When the cover plate 7 is subjected to external force, the air spring 1 passively reduces vibration to prevent the cover plate from contacting the electromagnetic assembly and damaging the electromagnetic assembly; when the air spring 1 is deformed, it drives the magnetic part 2 located between the first electromagnet 3 and the second electromagnet 4 to move downward, and the controller adjusts the current of the first coil of the first electromagnet 3 and / or the current of the second coil on the second electromagnet 4 to adjust the electromagnetic force and realize active vibration reduction.

[0039] On the basis of the above embodiment, the shock absorber also includes a first support member 8 and a second support member 9. The first support member 8 is arranged on the inner side of the air spring 1, and the second support member 9 is arranged on the outer side of the air spring 1. The first support member 8 and the second support member 9 are respectively arranged at the upper and lower parts of the air spring 1. The first support member 8 or the second support member 9 located on the upper part of the air spring 1 is connected to the cover plate 7, and the second support member 9 or the first support member 8 located on the lower part of the air spring 1 is connected to the base 6. The first support member 8 and the second support member 9 are matched to support and fix the air spring 1.

[0040] refer to Figure 1 The first support member 8 is an annular structure and is disposed on the inner upper portion of the air spring 1. The first support member 8 is connected to the cover plate 7 and extends toward the base 6. There is a gap between the first support member 8 and the base 6 to prevent the first support member 8 from contacting the base 6 when an external force is applied, thereby affecting the vibration reduction effect of the air spring 1. The second support member 9 is also an annular structure and is disposed on the outer lower portion of the air spring 1. The second support member 9 is connected to the base 6 and extends toward the cover plate 7. There is a gap between the second support member 9 and the cover plate 7 to prevent the second support member 9 from contacting the cover plate 7 when an external force is applied, thereby affecting the vibration reduction effect of the air spring 1. In this embodiment, the first support member 8 and the second support member 9 are disposed on the upper and lower portions of the inner and outer sides of the air spring 1, so that the air spring 1 is placed between the first support member 8 and the second support member 9, thereby supporting and fixing the air spring 1 and preventing the air spring 1 from deflecting when subjected to an external force.

[0041] Furthermore, the magnetic part 2 is connected to the first support part 8, and the magnetic part 2 is located between the first electromagnet 3 and the second electromagnet 4; when the cover plate 7 is acted upon by an external force, the air spring 1 and the first support part 8 move downward, thereby driving the magnetic part 2 to move between the first electromagnet 3 and the second electromagnet 4, and adjusting the current of the first coil on the first electromagnet 3 and / or the current of the second coil on the second electromagnet 4 through the controller so that the magnetic part 2 is in the middle position between the first electromagnet 3 and the second electromagnet 4, and performing passive vibration reduction and active vibration reduction at the same time.

[0042] In one embodiment, a first support member 8 is provided at the lower inner side of the air spring 1, the first support member 8 is connected to the base 6, extends toward the cover plate 7, and there is a distance between the first support member 8 and the cover plate 7; a second support member 9 is provided at the upper outer side of the air spring 1, the second support member 9 is connected to the cover plate 7, extends toward the base 6, and there is a distance between the second support member 9 and the base 6. The first support member 8 and the second support member 9 are matched to support and fix the air spring 1 without affecting the passive vibration reduction of the air spring 1.

[0043] On the basis of the above embodiment, there are multiple first support members 8 and multiple second support members 9 , and the multiple first support members 8 and the multiple second support members 9 are spaced apart along the circumferential direction of the air spring 1 .

[0044] There are multiple first support members 8, and the multiple first support members 8 are all connected to the inner side of the air spring 1. The multiple first support members 8 are connected to the cover plate 7 or the base 6, and the multiple first support members 8 are arranged along the circumferential direction of the air spring 1; there are multiple second support members 9, and the multiple second support members 9 are all connected to the outer side of the air spring 1. The multiple second support members 9 are connected to the cover plate 7 or the base 6, and the multiple second support members 9 are arranged along the circumferential direction of the air spring 1; the multiple first support members 8 and the second support members 9 match each other to support and fix the air spring 1 to prevent the air spring 1 from deflecting under the action of external force.

[0045] In a preferred embodiment, multiple first support members 8 are evenly arranged on the inner side of the air spring 1, that is, the distance between any two adjacent first support members 8 is equal, and multiple second support members 9 are evenly arranged on the outer side of the air spring 1, that is, the distance between any two adjacent second support members 9 is equal.

[0046] Based on the above embodiment, the shock absorber also includes a displacement monitoring component, which is connected to the controller. The displacement monitoring component is used to detect the distance between the magnetic part 2 and the bottom surface of the first electromagnet 3 and the distance between the magnetic part 2 and the top surface of the second electromagnet 4; the controller is used to adjust the current of the first electromagnet 3 and / or the second electromagnet 4 based on the displacement information detected by the displacement monitoring component.

[0047] Specifically, when the air spring 1 is subjected to external force, the magnetic part 2 moves downward as the air spring 1 deforms. The displacement monitoring component can detect the distance between the magnetic part 2 and the bottom surface of the first electromagnet 3 and the distance between the magnetic part 2 and the top surface of the second electromagnet 4 to understand the deformation of the air spring 1.

[0048] Furthermore, the displacement monitoring component is connected to the controller, and the controller receives the displacement information detected by the displacement monitoring component and compares the current displacement information with the initial displacement information. When the current displacement information changes, the current of the first electromagnet 3 and / or the second electromagnet 4 is adjusted based on the current displacement information, that is, the upward electromagnetic force of the first electromagnet 3 and / or the downward electromagnetic force of the second electromagnet 4 is changed, so that the magnetic part 2 is located in the middle position between the first electromagnet 3 and the second electromagnet 4, thereby realizing active vibration reduction.

[0049] The vibration absorber provided by the present invention is a magnetic hybrid active and passive integrated vibration absorber, which integrates the air spring 1 with the electromagnetic suspension vibration isolation technology, and utilizes the characteristics of the air spring 1 with large load-bearing capacity and low natural frequency to achieve the purpose of large load-bearing capacity of the vibration absorber and wide frequency band of passive vibration reduction of the equipment; utilizes the characteristics of electromagnetic suspension vibration isolation such as adjustable and controllable stiffness, wide working spectrum, fast response, and easy control to achieve the purpose of active vibration reduction of multiple typical line spectra of the equipment; the integrated design of active vibration reduction and passive vibration reduction uses the air spring 1 for load-bearing and passive vibration reduction, and the electromagnetic suspension vibration isolation structure for tracking and vibration reduction of the typical line spectrum of the equipment, which can not only overcome the defects of electromagnetic suspension with large energy consumption and insufficient high-frequency vibration isolation performance, but also give full play to the advantages of the two technologies to improve the vibration reduction effect of the equipment.

[0050] This embodiment does not specifically limit the magnetic member 2. In one embodiment, the magnetic member 2 is an armature.

[0051] This embodiment further provides a ship, comprising the shock absorber according to any one of the above embodiments, and further comprising a hull 10 , on which the shock absorber is disposed.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A shock absorber, characterized in that: include: An air spring, an electromagnetic assembly, a magnetic component, and a controller, wherein the electromagnetic assembly is arranged on the inner side of the air spring, and the top surface of the air spring is higher than the top surface of the electromagnetic assembly; The electromagnetic assembly includes a first electromagnet and a second electromagnet, wherein the first electromagnet is arranged above the second electromagnet, and there is a distance between the first electromagnet and the second electromagnet; The magnetic member is vertically connected to the inner side of the air spring and is located between the first electromagnet and the second electromagnet; The controller is configured to adjust the current of the first electromagnet and / or the second electromagnet when the air spring is subjected to a force, so that the magnetic member is located at an intermediate position between the first electromagnet and the second electromagnet; The shock absorber further includes a base and a cover plate, the electromagnetic assembly and the air spring are arranged on the base, and the top surface of the air spring is in contact with the cover plate; The shock absorber further includes a first support member and a second support member, the first support member is provided on the inner side of the air spring, the second support member is provided on the outer side of the air spring, the first support member and the second support member are provided on the upper part and the lower part of the air spring respectively, the first support member or the second support member located on the upper part of the air spring is connected to the cover plate, and the second support member or the first support member located on the lower part of the air spring is connected to the base, and the first support member and the second support member are matched to support and fix the air spring; The magnetic member is connected to the first supporting member.

2. The shock absorber according to claim 1, characterized in that The electromagnetic assembly includes a fixing piece, and the second electromagnet and the first electromagnet are sequentially sleeved and connected to the fixing piece.

3. The shock absorber according to claim 1, characterized in that The magnetic member is an annular structure.

4. The shock absorber according to claim 1, characterized in that There are multiple magnetic members, and the multiple magnetic members are arranged at intervals along the circumferential direction of the air spring, and the multiple magnetic members are all located between the first electromagnet and the second electromagnet.

5. The vibration absorber according to claim 3 or 4, characterized in that: The magnetic component is connected to the middle position of the air spring in the height direction.

6. The shock absorber according to claim 1, characterized in that There are a plurality of the first support members and a plurality of the second support members, and the plurality of the first support members and the plurality of the second support members are arranged at intervals along the circumferential direction of the air spring.

7. The shock absorber according to claim 1, characterized in that The shock absorber also includes a displacement monitoring component, which is connected to the controller and is used to detect the distance between the magnetic part and the bottom surface of the first electromagnet and the distance between the magnetic part and the top surface of the second electromagnet; the controller is used to adjust the current of the first electromagnet and / or the second electromagnet based on the displacement information detected by the displacement monitoring component.

8. A ship, characterized in that: The invention comprises the vibration absorber according to any one of claims 1 to 7, and further comprises a hull, wherein the vibration absorber is arranged on the hull.

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