A magnetic vibration damping device containing an inerter

Abstract

The application provides a magnetic damping device containing an inerter in the field of damping, which comprises a shell, a flywheel assembly, a screw rod, an insulating sleeve, a moving ring, a first magnet, a second magnet, a third magnet and a fourth magnet; when the moving ring moves to the inside of the shell under the action of a thrust force, the moving ring drives the fourth magnet to move to the direction of the third magnet, the third magnet drives the screw rod to move linearly to the direction of the first magnet, and the flywheel assembly rotates simultaneously; the inerter damping structure has the advantages of not only damping capacity, but also simple and exquisite structure, high integration, and the current generated by the change of the magnetic field can be used as a detection signal of vibration.

Description

Technical Field

[0001] This invention belongs to the field of vibration reduction, and specifically relates to a magnetic vibration reduction device containing inertial capacitance. Background Technology

[0002] Structural vibration involves multiple fields, including mechanical engineering, structural engineering, aerospace, road transportation, and rail transportation. Many studies and applications in these fields are closely related to vibration reduction technology. Fatigue problems caused by vibration frequently occur, such as in aircraft engine hydraulic lines, tool head vibration during machine tool cutting, and axle vibration in automobiles caused by uneven road surfaces, all of which affect daily life.

[0003] The existing technology has the following problems:

[0004] 1. Complex structure: Existing vibration damping devices generally require complex mechanical or hydraulic structures, such as damping springs and dampers. The setup and control of such components are too complex, and maintenance is difficult.

[0005] 2. High energy consumption: Some existing vibration damping devices require hydraulic pressure, increasing operating costs;

[0006] 3. Takes up a lot of space. Summary of the Invention

[0007] This application aims to at least partially solve one of the technical problems in related technologies. Based on the fact that coils achieve damping function through induced current and have a compact structure, embodiments of the present invention provide a magnetic vibration damping device with inertial capacitance, as follows:

[0008] A magnetic vibration damping device containing inertial capacitance, comprising:

[0009] The housing is cylindrical and has a cylindrical cavity inside. A rotating cavity is provided in the middle section of the housing, and the diameter of the rotating cavity is larger than the diameter of the cylindrical cavity.

[0010] The flywheel assembly is installed inside the rotor cavity.

[0011] A lead screw, which is installed in a cylindrical cavity and passes through the flywheel assembly, and the flywheel assembly is threadedly connected to the lead screw;

[0012] An insulating sleeve, two of which are installed inside the housing and respectively disposed on both sides of the flywheel assembly, the insulating sleeves enclosing the lead screw;

[0013] A movable ring, one end of which is inserted into the end of the housing;

[0014] A first magnet, a second magnet, a third magnet, and a fourth magnet are arranged sequentially in the housing from one end of the housing to the end of the moving ring. The first magnet is mounted on the inner wall of the end of the housing, the second magnet and the third magnet are respectively mounted on both ends of the lead screw, and the fourth magnet is mounted on the moving ring. The magnetic poles of the opposite sides of the first magnet and the second magnet are the same, and the magnetic poles of the opposite sides of the third magnet and the fourth magnet are the same.

[0015] When the moving ring is pushed into the housing, it drives the fourth magnet to move toward the third magnet, and the third magnet drives the lead screw to move linearly toward the first magnet. At the same time, the flywheel assembly rotates.

[0016] Preferably, the device further includes springs, with a spring disposed between the first magnet and the second magnet, a spring disposed between the third magnet and the fourth magnet, and a spring disposed between the fourth magnet and the inner wall of the end face of the housing on the same side.

[0017] Preferably, the device further includes energized coils, with energized coils respectively fitted on the outer walls of the two insulating sleeves.

[0018] Preferably, the device further includes end face bearings, with end face bearings respectively provided on both sides of the flywheel assembly, and the two end face bearings respectively disposed between the two insulating sleeves and the flywheel assembly.

[0019] The flywheel assembly includes: a wheel and a rotor;

[0020] The rotating wheel is installed inside the rotating wheel cavity, and the two rotors are respectively installed on both sides of the rotating wheel, with each rotor connected to the end face shaft on the same side.

[0021] Preferably, the device further includes a retaining ring, which is mounted on the outer end face of the housing away from the movable ring.

[0022] The movable ring includes a movable circular ring and a movable rod. One end of the movable rod is inserted into the housing and connected to the fourth magnet, and the other end of the movable rod is connected to the outer wall of the movable circular ring.

[0023] The fixing ring includes: a fixing ring and a mounting rod;

[0024] One end of the mounting rod is mounted on the outer end face of the housing, and the other end of the mounting rod is connected to the outer side wall of the fixing ring.

[0025] The housing includes a first cylindrical section and a second cylindrical section with identical structures, and the housing is removable;

[0026] The cavity inside the first column is T-shaped. When the first column and the second column are closed, the transverse cavities of the first column and the second column close to form a rotating cavity, and the longitudinal cavities of the first column and the second column form a cylindrical cavity.

[0027] Preferably, the device further includes a power supply, which is connected to the two energized coils respectively.

[0028] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0029] 1. Excellent vibration reduction effect: Since the device uses a power source to control the magnetic force and uses the resistance inside the coil to dampen the rotational inertia component on the outside, it can achieve efficient control and absorption of vibration.

[0030] 2. Flexible inertial capacitance and frequency adjustment: The advantages of the inertial capacitance damping structure are not only its damping ability, but also the simple and exquisite structure and high integration of the present invention. The induced current generated by the change of magnetic field can be used as a vibration detection signal. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A cross-sectional schematic diagram of the device provided by the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the device provided by the present invention.

[0034] Marker explanation:

[0035] 1. Housing; 1001. First cylindrical tube; 1002. Second cylindrical tube; 2. Flywheel assembly; 2001. Rotor wheel; 2002. Rotor; 3. Lead screw; 4. Insulating sleeve; 5. Moving ring; 6. First magnet; 7. Second magnet; 8. Third magnet; 9. Fourth magnet; 10. Spring; 11. Energized coil; 12. End face bearing; 13. Fixed ring. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or “connected,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0038] It should be noted that the terms "up", "down", "left", "right", "front", and "back" used in this invention are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] An inertial capacitive damping device converts the relative displacement of two endpoints into the rotation of a flywheel. A magnetic vibration damping device containing an inertial capacitive damping device utilizes magnetic materials and magnetic fields combined with an inertial capacitive element to reduce mechanical vibration. This device, which achieves vibration damping through magnetic force, is not only simple in structure but also offers strong controllability. This invention provides a magnetic vibration damping device containing an inertial capacitive damping device, specifically comprising the following:

[0040] like Figures 1-2As shown, a magnetic vibration damping device with inertial capacitance includes: a housing, a flywheel assembly 2, a lead screw 3, an insulating sleeve 4, a moving ring 5, a first magnet 6, a second magnet 7, a third magnet 8, and a fourth magnet 9. The housing is cylindrical and has a cylindrical cavity inside. A rotating cavity is provided in the middle section of the housing, and the diameter of the rotating cavity is larger than the diameter of the cylindrical cavity. The flywheel assembly 2 is installed in the rotating cavity, and the lead screw 3 is installed in the cylindrical cavity and passes through the flywheel assembly 2. The flywheel assembly 2 and the lead screw 3 are threadedly connected. Two insulating sleeves 4 are installed in the housing and are respectively located on both sides of the flywheel assembly 2. The insulating sleeves 4 enclose the lead screw 3. One end of the moving ring 5 is inserted into the end of the housing. From one end to the moving ring 5, the first magnet 6, the second magnet 7, the third magnet 8, and the fourth magnet 9 are sequentially arranged. The first magnet 6 is installed on the inner wall of the end of the housing, the second magnet 7 and the third magnet 8 are respectively installed at both ends of the lead screw 3, and the fourth magnet 9 is installed on the moving ring 5. The magnetic poles of the opposite sides of the first magnet 6 and the second magnet 7 are the same, and the magnetic poles of the opposite sides of the third magnet 8 and the fourth magnet 9 are the same. When the moving ring 5 is pushed into the housing, the moving ring 5 drives the fourth magnet 9 to move towards the third magnet 8, and the third magnet 8 drives the lead screw 3 to move linearly towards the first magnet 6. At the same time, the flywheel assembly 2 rotates.

[0041] In one specific implementation, the shell structure is as follows:

[0042] The housing includes a first cylindrical tube 1001 and a second cylindrical tube 1002 with identical structures, and the housing is detachable; the cavity inside the first cylindrical tube 1001 is T-shaped, and when the first cylindrical tube 1001 and the second cylindrical tube 1002 are closed, the transverse cavity of the first cylindrical tube 1001 and the transverse cavity of the second cylindrical tube 1002 are closed to form a rotating cavity, and the longitudinal cavity of the first cylindrical tube and the longitudinal cavity of the second cylindrical tube 1002 form a cylindrical cavity.

[0043] When the first cylindrical tube 1001 and the second cylindrical tube 1002 are connected, the cavity formed at the connection between the first cylindrical tube 1001 and the second cylindrical tube 1002 is the rotary cavity. The cavity formed by the connection between the first cylindrical tube 1001 and the second cylindrical tube 1002 along the axis of the housing is the cylindrical cavity. The flywheel assembly 2, the lead screw 3, the insulating sleeve 4, the first magnet 6, the second magnet 7, the third magnet 8 and the fourth magnet 9 are all installed in the cavity inside the housing. The lead screw 3 is installed in the cylindrical cavity.

[0044] In one specific embodiment, the flywheel assembly 2 includes a wheel 2001 and a rotor 2002; the wheel 2001 is installed in the wheel cavity, and the two rotors 2002 are respectively installed on both sides of the wheel 2001, with each rotor 2002 connected to the end face shaft on the same side.

[0045] The axis of the rotating wheel 2001 and the axis of the lead screw 3 are cross-shaped. The lead screw 3 passes through the rotor 2002-rotor 2001-rotor 2002 in sequence. The external thread of the lead screw 3 is adapted to the internal threads of the rotor 2002 and the rotating wheel 2001. Since the rotating wheel 2001 is installed in the rotating wheel cavity, when the lead screw 3 moves linearly, the rotating wheel 2001 will rotate relative to the lead screw 3 in the rotating wheel cavity.

[0046] In one specific embodiment, the spring 10 is specifically configured as follows: a spring 10 is disposed between the first magnet 6 and the second magnet 7, a spring 10 is disposed between the third magnet 8 and the fourth magnet 9, and a spring 10 is disposed between the fourth magnet 9 and the inner wall of the end face of the housing on the same side.

[0047] The spring 10 between the first magnet 6 and the second magnet 7 is to prevent the first magnet 6 and the second magnet 7 from colliding. The spring 10 between the third magnet 8 and the fourth magnet 9 is to prevent the third magnet 8 and the fourth magnet 9 from colliding. The spring 10 between the fourth magnet 9 and the housing is to prevent the fourth magnet 9 from colliding with the inner wall of the housing.

[0048] In one specific embodiment, the device further includes an energized coil 11 and a power source. The energized coil 11 is respectively fitted on the outer wall of the two insulating sleeves 4, and the power source is connected to the two energized coils 11 respectively.

[0049] By connecting the two energized coils 11 to external power sources, a magnetic field is generated inside the coils, thereby changing the magnetic force between the magnets and achieving the control of the magnetic force.

[0050] The device also includes end face bearings 12, with end face bearings 12 respectively provided on both sides of the flywheel assembly 2, and the two end face bearings 12 respectively disposed between the two insulating sleeves 4 and the flywheel assembly 2.

[0051] In one specific embodiment, the device further includes a fixing ring 13, which is mounted on the outer end face of the housing away from the movable ring 5. The fixing ring 13 includes a fixing ring and a mounting rod; one end of the mounting rod is mounted on the outer end face of the housing, and the other end of the mounting rod is connected to the outer side wall of the fixing ring. The movable ring 5 includes a movable ring and a movable rod; one end of the movable rod is inserted into the housing and connected to the fourth magnet 9, and the other end of the movable rod is connected to the outer side wall of the movable ring.

[0052] In this embodiment, the moving ring 5 is the input end of the device, that is, the vibration input end. The moving ring 5 and the fixed ring 13 are installed on the equipment that needs vibration reduction to perform vibration cancellation treatment.

[0053] The specific principle of this device is as follows:

[0054] Two energized coils 11 are wound around two insulating sleeves 4, respectively, and are used for magnetic force control. Furthermore, the two energized coils 11, wound around the two insulating sleeves 4, generate magnetic induction currents under the changing magnetic fields between the corresponding first magnet 6, second magnet 7, third magnet 8, and fourth magnet 9, which can serve as vibration detection signals. The rotor 2002 and the lead screw 3 are assembled together by ball bearings, forming a ball screw 3 structure.

[0055] The first magnet 6, the second magnet 7, the third magnet 8, and the fourth magnet 9 are cylindrical. During installation, magnets with the same poles repel each other, and the first magnet 6 and the second magnet 7 are also installed with the same poles repelling each other. A movable ring 5 is mounted on one end face of the housing and is connected to the fourth magnet 9. The second magnet 7 and the third magnet 8 are respectively connected to the two ends of the lead screw 3. The first magnet 6 is fixed to one end of the inner side of the housing, while the second magnet 7, the third magnet 8, and the fourth magnet 9 can move within the outer sleeve.

[0056] Magnetic force control is achieved by connecting an external power source to each of the two energized coils 11, thereby generating a magnetic field within the coils 11 and altering the magnetic force between the magnets.

[0057] The movement of the first magnet 6, the second magnet 7, the third magnet 8, and the fourth magnet 9 changes the magnetic flux between the magnets, causing the coil to generate an induced current. The damping function can be achieved by dissipating the induced current in the coil.

[0058] In the above-mentioned ball screw 3 structure, both the screw 3 and the rotor 2002 have threads, and the balls can roll in the threads of the screw 3 and the rotor 2002, which can realize the conversion of the linear movement of the screw 3 into the rotation of the rotor 2002 and store inertial kinetic energy.

[0059] This device boasts excellent vibration reduction performance: By utilizing a power source to regulate magnetic force and employing the resistance within the coil to dampen the external rotational inertia components, it achieves highly efficient vibration control and absorption. The device also features flexible inertial capacitance and frequency adjustment: the advantages of the inertial capacitance damping structure lie not only in its vibration reduction capability but also in its simple, compact structure, high integration, and the induced current generated by magnetic field changes, which can serve as a vibration detection signal. This invention is easy to operate, requires low-tech construction, is resistant to high-temperature, high-humidity, and highly corrosive underground environments, is unaffected by harsh underground conditions, and allows for timely data feedback to the surface, accurately reflecting the real-time monitoring needs of deep mine strata temperatures and dynamics.

[0060] The following points need to be explained:

[0061] (1) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0062] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present invention; that is, these drawings are not drawn to actual scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element, or there may be intermediate elements.

[0063] (3) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0064] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A magnetic vibration damping device containing inertial capacitance, characterized in that, include: The housing is cylindrical and has a cylindrical cavity inside. A rotating cavity is provided in the middle section of the housing, and the diameter of the rotating cavity is larger than the diameter of the cylindrical cavity. Flywheel assembly, the flywheel assembly being installed within the rotor cavity; A lead screw, which is installed in a cylindrical cavity and passes through the flywheel assembly, and the flywheel assembly is threadedly connected to the lead screw; An insulating sleeve, two of which are installed inside the housing and respectively disposed on both sides of the flywheel assembly, the insulating sleeves enclosing the lead screw; A movable ring, one end of which is inserted into the end of the housing; A first magnet, a second magnet, a third magnet, and a fourth magnet are arranged sequentially in the housing from one end of the housing to the end of the moving ring. The first magnet is mounted on the inner wall of the end of the housing, the second magnet and the third magnet are respectively mounted on both ends of the lead screw, and the fourth magnet is mounted on the moving ring. The magnetic poles of the opposite sides of the first magnet and the second magnet are the same, and the magnetic poles of the opposite sides of the third magnet and the fourth magnet are the same. When the moving ring is pushed into the housing, it drives the fourth magnet to move toward the third magnet, and the third magnet drives the lead screw to move linearly toward the first magnet. At the same time, the flywheel assembly rotates.

2. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, It also includes springs, with a spring disposed between the first magnet and the second magnet, a spring disposed between the third magnet and the fourth magnet, and a spring disposed between the fourth magnet and the inner wall of the end face of the housing on the same side.

3. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, It also includes energized coils, with energized coils respectively fitted on the outer walls of the two insulating sleeves.

4. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, It also includes end face bearings, with end face bearings respectively provided on both sides of the flywheel assembly, and the two end face bearings respectively disposed between the two insulating sleeves and the flywheel assembly.

5. The magnetic vibration damping device containing inertial capacitance according to claim 4, characterized in that, The flywheel assembly includes: a wheel and a rotor; The rotating wheel is installed inside the rotating wheel cavity, and the two rotors are respectively installed on both sides of the rotating wheel, with each rotor connected to the end face shaft on the same side.

6. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, It also includes a retaining ring, which is mounted on the outer end face of the housing away from the movable ring.

7. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, The movable ring includes a movable circular ring and a movable rod. One end of the movable rod is inserted into the housing and connected to the fourth magnet, and the other end of the movable rod is connected to the outer wall of the movable circular ring.

8. The magnetic vibration damping device containing inertial capacitance according to claim 6, characterized in that, The fixing ring includes: a fixing ring and a mounting rod; One end of the mounting rod is mounted on the outer end face of the housing, and the other end of the mounting rod is connected to the outer side wall of the fixing ring.

9. The magnetic vibration damping device containing inertial capacitance according to claim 1, characterized in that, The housing includes a first cylindrical section and a second cylindrical section with identical structures, and the housing is removable; The cavity inside the first column is T-shaped. When the first column and the second column are closed, the transverse cavities of the first column and the second column close to form a rotating cavity, and the longitudinal cavities of the first column and the second column form a cylindrical cavity.

10. The magnetic vibration damping device containing inertial capacitance according to claim 3, characterized in that, It also includes a power supply, which is connected to each of the two energized coils.

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