A damper with parallel rotating eddy current damping device

Abstract

The present invention discloses a damper with a parallel rotating eddy current damping device, comprising: a mounting seat, which comprises a base plate and a plurality of columns; a mass block group, which is supported on the base plate by a plurality of elastic elements and is slidably connected with the columns in the height direction; a screw, which is fixed on the bottom surface of the mass block group; a first damping disk, which comprises a first conductor plate, which is fixed to the middle of the base plate through a support frame; a magnet rotating disk, which is arranged in parallel and directly below the first conductor plate, and a nut sleeved on the screw passes through the first conductor plate and is fixedly connected with the magnet transmission disk; a plurality of second damping disks, which are supported at intervals along the circumference of the magnet rotating disk at its bottom, and any second damping disk is a rolling rotating eddy current damping device. The present invention provides damping force through the first damping disk and the second damping disk together, and significantly improves the energy consumption density of the damper without changing the spatial size of the damper, and at the same time improves the inertia coefficient and damping efficiency, thereby ensuring the vibration suppression effect.

Description

Technical Field

[0001] The present invention relates to the field of vibration control technology, and more particularly to a damper with a parallel rotating eddy current damping device. Background Art

[0002] Tuned Mass Damper (TMD) has been widely used in vibration control of various building structures and bridge projects due to its efficient single-mode vibration reduction performance, and has a significant vibration suppression effect. The energy-consuming elements of TMD are mainly of two types: viscous damping devices and eddy current damping devices. Among them, viscous damping devices are prone to leakage, low durability, and difficulty in adjusting damping parameters in the later stage under long-term reciprocating loads, which poses obvious safety hazards. The eddy current damping device adopts the principle of non-contact electromagnetic induction, does not rely on mechanical friction to dissipate energy, and has no working fluid, so there is no leakage and sealing problem. It has the advantages of high reliability, good durability and relatively simple structure. It is particularly suitable for working environments that require long fatigue life and are not easy to maintain. At present, the structural forms of eddy current damping devices generally include relative motion type, plate type and ball screw-based rotation type. The damping coefficients provided by the first two types of eddy current damping devices are relatively low, which makes it difficult to meet the damping force requirements of large engineering structures. Eddy current damping devices that use a ball screw pair transmission system to convert the linear motion of the mass block into rotational motion can improve energy consumption efficiency to a certain extent, but their efficiency index is still limited by the lead of the ball screw pair and the overall axial size. In addition, they have disadvantages such as a small inertia coefficient, a low degree of assembly, and low internal space utilization of the device under the same external volume, which greatly limits the applicability of eddy current damping devices in actual construction.

[0003] To solve the above problems, it is necessary to design a damper with a parallel rotating eddy current damping device, which can improve the energy density of the damper, ensure the vibration control effect, and at the same time improve the applicability of the damper in different working environments as well as the range and fine grading of damping adjustment. Summary of the invention

[0004] The object of the present invention is to provide a damper with a parallel rotating eddy current damping device, in which a damping force is jointly provided by a first damping disk and a second damping disk, and the internal space utilization of the damper is significantly improved without changing the lead and the overall axial size of the ball screw pair in the conventional eddy current damping device, while the inertia coefficient and the damping efficiency are improved, thereby ensuring the vibration suppression effect.

[0005] In order to achieve these objects and other advantages according to the present invention, there is provided a damper with a parallel rotating eddy current damping device, comprising:

[0006] The mounting seat comprises a bottom plate; a plurality of upright posts which are arranged at intervals along the circumference of the bottom plate around the top surface thereof;

[0007] A mass block group, which is matched and clamped between the plurality of columns and slidably connected thereto along a height direction;

[0008] A plurality of elastic elements are supported at intervals along the circumference of the mass block group around the bottom surface thereof, one end of any elastic element is fixedly connected to the mass block group, and the other end is vertically and downwardly fixedly connected to the bottom plate;

[0009] A screw rod is vertically fixed to the middle of the bottom surface of the mass block group; a nut is sleeved on the screw rod and threadedly connected with the screw rod;

[0010] A first damping disk, comprising a first conductor plate, which is arranged in parallel between the bottom plate and the mass block group and fixed to the middle of the bottom plate through a support frame; a magnet rotating disk, which is arranged in parallel just below the first conductor plate, the first conductor plate and the middle of the magnet rotating disk are both provided with vertical through holes coaxial with the screw, the nut is passed through two of the vertical through holes and fixedly connected to the magnet transmission disk;

[0011] A plurality of second damping plates are arranged at intervals along the circumference of the magnet rotating plate, and any second damping plate includes a magnet roller, which is supported on the base plate and is rollingly connected thereto; two second conductor plates are arranged on both sides of the magnet roller relative to each other through a rotating shaft and are rotationally connected thereto, and the rotating shaft is arranged along the radial direction of the magnet rotating plate, and the two second conductor plates are fixedly connected to the bottom surface of the magnet rotating plate through a connecting mechanism.

[0012] Preferably, in the damper with a parallel rotating eddy current damping device, the mass block group includes a box body, which is a hollow structure with an opening at the top; a plurality of partitions, which are arranged in the box body and divide the upper space of the box body into a plurality of accommodating chambers, each accommodating chamber has the same size and is located at the same height; a first mass block, which is fixed in the lower space of the box body; and a plurality of second mass blocks, which are arranged in the plurality of accommodating chambers, and any second mass block is adapted to the cross-sectional shape of the accommodating chamber.

[0013] Preferably, for the damper with a parallel rotating eddy current damping device, the mounting seat also includes a plurality of guide rails, which are arranged corresponding to the plurality of columns, and any guide rail is fixed on the side wall adjacent to the corresponding column and the mass block group along the height direction; and a plurality of sliders, which are arranged one-to-one corresponding to the plurality of guide rails, and any slider is fixed on the outer side wall of the mass block group and is slidably connected with the corresponding guide rail.

[0014] Preferably, in the damper with a parallel rotating eddy current damping device, limiters are fixedly provided at the connections between the elastic element and the mass block group and the base plate, and the ends of the elastic element are fitted and sleeved with the corresponding limiters.

[0015] Preferably, in the damper with a parallel rotating eddy current damping device, the support frame includes a plurality of inverted L-shaped brackets, which are arranged at intervals along the circumference of the first conductor plate, the vertical portion of any inverted L-shaped bracket is located on the outside of the first conductor plate and fixed to the base plate, and the horizontal portion is fixedly connected to the first conductor plate.

[0016] Preferably, in the damper with a parallel rotating eddy current damping device, the vertical portion of the inverted L-shaped bracket is a telescopic mechanism, which is configured to adjust the distance between the first conductor plate and the base plate.

[0017] Preferably, in the damper with parallel rotating eddy current damping device, the connecting mechanism comprises a horizontal plate, which is fixedly connected to the bottom surface of the magnet rotating disk through a connecting rod, and the bottom of the horizontal plate is provided with a slide groove parallel to the rotating shaft, and the top end of any second conductor plate is hung in the slide groove and slidably connected therewith;

[0018] The rotating shaft includes a pitch-adjusting screw, a middle portion of which is provided with an annular limiting groove along the circumferential direction, and two ends are respectively provided with external threads, the magnetic roller is fitted and clamped in the annular limiting groove and is rotatably connected thereto, the two second conductor plates are respectively arranged at the two ends of the pitch-adjusting screw, and any second conductor plate is slidably connected to the pitch-adjusting screw through a middle through-hole; two pitch-adjusting nuts are respectively arranged on the outer sides of the two second conductor plates and are threadedly connected to the pitch-adjusting screw; two compression springs are respectively arranged between the magnetic roller and the two second conductor plates, and any compression spring is sleeved on the pitch-adjusting screw.

[0019] Preferably, in the damper with a parallel rotating eddy current damping device, the center points of the mass block group, the first conductor plate and the magnet rotating disk are all located on the axis of the screw.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The present invention adds a plurality of second damping disks in the space below the first damping disk, so that the rolling rotating eddy current damping device, the magnet rotating disk and the nut and other structures all participate in the rotation and jointly provide the damping force. Compared with the existing eddy current damping device, the structure is more compact. Without changing the lead and the overall axial size of the ball screw pair in the conventional eddy current damping device (the damper occupies the same space), the internal space utilization rate of the damper is greatly improved, thereby significantly improving the inertial mass and the energy consumption density of the damper, improving the inertia coefficient and the damping efficiency, and ensuring the vibration suppression effect;

[0022] 2. The total damping of the present invention is jointly provided by a rotating eddy current damping device (first damping disk) and a rolling rotating eddy current damping device (second damping disk), and the spacing between the magnet rotating disk and the first conductor plate, the spacing between the magnet roller and the second conductor plate, and the mass of the mass block group can all be flexibly adjusted. The superposition of the two damping effects enables the overall damper to have a wider damping adjustment range and finer adjustment grading, which is conducive to precise damping design and engineering realization, improves the degree of assembly of the damper, and makes its actual performance parameters have better consistency with the design values, thereby reducing the installation and operation and maintenance costs of the damper while improving the vibration control efficiency and effect.

[0023] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a damper with a parallel rotating eddy current damping device according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the front elevation structure of the damper with the parallel rotating eddy current damping device described in the above embodiment;

[0026] Figure 3 is a schematic diagram of the side elevation structure of the damper with the parallel rotating eddy current damping device described in the above embodiment;

[0027] Figure 4 Schematic diagram of the planar structure of the damper with the parallel rotating eddy current damping device described in the above embodiment;

[0028] Figure 5 It is an exploded view of the damper with the parallel rotating eddy current damping device described in the above embodiment.

[0029] Description of reference numerals:

[0030] 1. Mounting seat; 11. Base plate; 12. Post; 13. Guide rail; 21. Elastic element; 22. Stopper; 3. First damping disk; 31. First conductor plate; 32. Support frame; 33. Magnet rotating disk; 4. Second damping disk; 41. Second conductor plate; 42. Magnet roller; 43. Rotating shaft; 5. Connecting mechanism; 51. Connecting rod; 52. Horizontal plate; 61. Screw; 62. Nut; 7. First mass block; 8. Slider; 9. Second mass block. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0032] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figure 1-5 As shown, the present invention provides a damper with a parallel rotating eddy current damping device, comprising:

[0034] The mounting seat comprises a bottom plate; a plurality of upright posts which are arranged at intervals along the circumference of the bottom plate around the top surface thereof;

[0035] A mass block group, which is matched and clamped between the plurality of columns and slidably connected thereto along a height direction;

[0036] A plurality of elastic elements are supported at intervals along the circumference of the mass block group around the bottom surface thereof, one end of any elastic element is fixedly connected to the mass block group, and the other end is vertically and downwardly fixedly connected to the bottom plate;

[0037] A screw rod is vertically fixed to the middle of the bottom surface of the mass block group; a nut is sleeved on the screw rod and threadedly connected with the screw rod;

[0038] A first damping disk, comprising a first conductor plate, which is arranged in parallel between the bottom plate and the mass block group and fixed to the middle of the bottom plate through a support frame; a magnet rotating disk, which is arranged in parallel just below the first conductor plate, the first conductor plate and the middle of the magnet rotating disk are both provided with vertical through holes coaxial with the screw, the nut is passed through two of the vertical through holes and fixedly connected to the magnet transmission disk;

[0039] A plurality of second damping plates are arranged at intervals along the circumference of the magnet rotating plate, and any second damping plate includes a magnet roller, which is supported on the base plate and is rollingly connected thereto; two second conductor plates are arranged on both sides of the magnet roller relative to each other through a rotating shaft and are rotationally connected thereto, and the rotating shaft is arranged along the radial direction of the magnet rotating plate, and the two second conductor plates are fixedly connected to the bottom surface of the magnet rotating plate through a connecting mechanism.

[0040] In the above technical solution, the first damping disk cooperates with the screw and the nut to form a conventional rotating eddy current damping device structure, the second damping disk is rollingly supported on the base plate and fixedly connected to the bottom surface of the magnet rotating disk through a connecting mechanism, and multiple second damping disks are connected in parallel under the magnet rotating disk through a connecting mechanism to form a rolling rotating eddy current damping device. Among them, magnets are arranged on both the magnet rotating disk and the magnet roller. When the mass block group is subjected to external (vibration) force and reciprocates along its height direction under the limiting effect of the column and the elastic force of the elastic element, the screw moves synchronously under the fixed connection with the mass block group. At this time, the nut is still supported on the bottom plate (the height position does not change) under the gravity of the magnet rotating disk and the second damping disk, and rotates clockwise or counterclockwise according to the moving direction of the screw, thereby driving the magnet rotating disk to rotate relative to the first conductor plate to cut the magnetic induction line, and then driving the second damping disks to rotate synchronously, that is, each magnet roller performs a circular motion on the bottom plate along the circumference of the magnet rotating disk, so that the second conductor plates on both sides of the magnet roller rotate to cut the magnetic induction line. At this time, induced current (eddy current) will be generated on the first conductor plate and the second conductor plate, and then a new magnetic field with a direction opposite to the original magnetic field will be generated, which will form a damping force between the original magnetic field and the conductor plate to hinder the relative movement of the two. At the same time, the resistance effect of the conductor plate converts the kinetic energy of the conductor plate into heat energy through eddy current and dissipates it, so that the kinetic energy is partially absorbed, forming a comprehensive anti-vibration effect of the damping effect of the first damping plate and the second damping plate.

[0041] Specifically, any column is vertically arranged on the bottom plate and detachably connected thereto. In this embodiment, columns are respectively arranged at the four corners of the bottom plate. The mass block group is an integral rectangular box structure. The columns can limit the horizontal movement of the mass block group through their own structural form (such as limiting the four corners of the box of the mass block group by a flat L-shaped column structure), ensuring that the mass block group only moves vertically (vibrates) when subjected to external forces, thereby maximizing the damping efficiency and vibration suppression effect in this direction. The elastic element can be a disc spring, a spiral spring, an air spring or the like. The screw and the matching nut convert the vertical vibration of the mass block into the rotation of the magnet rotating disk in the horizontal plane and the rotation of each magnet roller located below the magnet rotating disk around the corresponding rotating shaft. The structure of each magnet roller is the same, and its rolling / rotation trajectory is a circle located on the top surface of the bottom plate, and its center is the projection of the screw axis on the top surface of the bottom plate. Magnets are arranged on both the magnet rotating disk and the magnet roller, which rotate to cut the magnetic induction lines relative to the first conductor plate fixed in position and the second conductor plate moving in rigid body motion to produce a damping effect. The screw can be a ball screw, and the nut can be a ball nut compatible with the ball screw, so as to ensure that the above-mentioned linear vibration is transformed into rotation smoothly, and to minimize the energy loss in the kinetic energy conversion and the wear of the transmission mechanism such as the screw and nut, so as to ensure the service life of the device. The connecting mechanism includes a horizontal plate, which is fixedly connected to the top of the two second conductor plates; a connecting rod, which is vertically arranged and fixedly connected to the middle of the top surface of the horizontal plate and the bottom surface of the magnet rotating disk. Therefore, the magnet rotating disk is actually supported on the bottom plate by a plurality of second damping disks, and the first conductor plate is fixedly supported on the bottom plate by a support frame, forming a height difference between the magnet rotating disk and the first conductor plate.

[0042] In the present invention, the structural design of the first damping disk is similar to that of a conventional rotating eddy current damping device. Since it is necessary to realize the relative rotation of the magnet rotating disk and reserve sufficient height space for the linear motion of the screw, the magnet rotating disk originally needs to be suspended. The present invention makes full use of the space below the first damping disk. Without affecting the normal operation of the magnet rotating disk and the screw, a plurality of rolling rotating eddy current damping devices (second damping disk) are added in parallel below the first damping disk, so that the first and second damping disks rotate synchronously and jointly provide damping force, which significantly increases the inertial mass, improves the inertia coefficient and the damping efficiency; at the same time, as the vibration frequency of the structure to be suppressed increases, the inertia effect is improved, the effective mass of the damper is increased in disguise, and the mass ratio of the damper is increased, thereby achieving an improvement in the vibration control effect and ensuring the vibration suppression effect of the damper under different working conditions. In addition, the above-mentioned added second damping disk structure does not change the original overall axial size of the damper, nor does it change the lead of the ball screw pair. It greatly improves the internal space utilization of the damper, can be better adapted to different engineering situations and working environments, and has good and broad application prospects.

[0043] In another technical solution, the damper with parallel rotating eddy current damping device, the mass block group includes a box body, which is a hollow structure with an open top; a plurality of partitions, which are arranged in the box body and divide the upper space of the box body into a plurality of accommodating chambers, each of which has the same size and is located at the same height; a first mass block, which is fixed in the lower space of the box body; a plurality of second mass blocks, which are arranged in the plurality of accommodating chambers, and any second mass block is adapted to the cross-sectional shape of the accommodating chamber. Among them, one or more second mass blocks can be arranged in any accommodating chamber, and a plurality of second mass blocks can be stacked and fixed in the same accommodating chamber, and the weight of any second mass block is less than the weight of the first mass block. The second mass block is used to finely adjust the frequency of the damper. When the setting form (quantity, length, selection) of the elastic element remains unchanged, when only the first mass block is arranged in the box body, the damper has the maximum frequency modulation value, and as the second mass blocks are added to the box layer by layer, the vibration suppression frequency of the damper gradually decreases. The specific frequency of the damper can be designed and selected according to the specific application conditions. Specifically, the relationship between the damper frequency and mass is:

[0044]

[0045] Where: f is the damper frequency, k is the stiffness of the elastic element, and m is the total mass of the mass block group. The design structure of the mass block group enables the damper frequency to be flexibly, quickly and conveniently adjusted as the working conditions change, thereby improving the adaptability and practicality of the device.

[0046] In this embodiment, the multiple partitions include two partitions, which are respectively arranged along the length and width directions of the box body and divide the upper space of the box body into four cylindrical receiving cavities with the same shape and volume along the horizontal direction. The cross-sectional size of the second mass block is adapted to the cylindrical receiving cavity.

[0047] In another technical solution, the damper with parallel rotating eddy current damping device, the mounting seat also includes a plurality of guide rails, which are arranged corresponding to the plurality of columns, and any guide rail is fixed on the side wall of the corresponding column adjacent to the mass block group along the height direction; a plurality of sliders, which are arranged one by one corresponding to the plurality of guide rails, and any slider is fixed on the outer side wall of the mass block group and slidably connected with the corresponding guide rail. In this embodiment, four guide rails and four sliders are arranged corresponding to the columns, and each slider slides along the height direction of the column under the restriction of the corresponding guide rail. Thereby, the stability and reliability of the limiting effect of the mounting seat on the mass block group are better guaranteed.

[0048] In another technical solution, in the damper with a parallel rotating eddy current damping device, the connection between the elastic element and the mass block group and the bottom plate is respectively fixed with a stopper, and the end of the elastic element is sleeved with the corresponding stopper. Wherein, the stopper is a stopper column structure, which is vertically arranged and fixed on the bottom surface of the mass block group or the top surface of the bottom plate, and the end of each elastic element is sleeved with the stopper and then fixed on the mass block group or the bottom plate to provide the restoring force required for the mass block group to maintain periodic vibration. The stopper guides and limits the elastic movement of the elastic element, effectively reducing the loss of potential energy of elastic movement of the elastic element during operation, and ensuring the overall working efficiency of the damper.

[0049] In another technical solution, the damper with a parallel rotating eddy current damping device, the support frame includes a plurality of inverted L-shaped brackets, which are arranged at intervals along the circumference of the first conductor plate, the vertical portion of any inverted L-shaped bracket is located on the outside of the first conductor plate and fixed to the bottom plate, and the horizontal portion is fixedly connected to the first conductor plate.

[0050] Specifically, the horizontal portion of the inverted L-shaped bracket is arranged along the radial direction of the first conductor plate and fixed on its top surface, thereby ensuring that the support frame stably supports the first conductor plate while leaving space directly below the first conductor plate, so that the second damping disk can be better installed and rotated, making the double damping disk arrangement structure of the damper more compact and reasonable, further improving the space utilization rate of the damper design and the energy consumption density of the damper, and enabling the damper to be better used in a working environment with limited space.

[0051] In another technical solution, in the damper with a parallel rotating eddy current damping device, the vertical portion of the inverted L-shaped bracket is a telescopic mechanism, which is configured to adjust the distance between the first conductor plate and the base plate.

[0052] Among them, the magnet rotating disk, the nut, the first conductor plate and its supporting frame together constitute a rotating eddy current damping device. The inverted L-shaped bracket is set as a height-adjustable structure, which can realize the adjustment of the distance between the first conductor plate and the magnet on the magnet rotating disk, and then realize the graded adjustment of the damping of the first damping disk. At the same time, the assembly degree of the damper is improved, and the installation and subsequent operation and maintenance costs of the damper are effectively reduced. The telescopic mechanism can use telescopic cylinders, electric telescopic rods, adjusting screws and other devices. The horizontal part of the inverted L-shaped bracket is fixed to the top of the telescopic mechanism. When the telescopic mechanism is extended and retracted along the length direction, the setting height of the horizontal part relative to the bottom plate also changes at any time, thereby realizing the height adjustment of the horizontal part relative to the bottom plate.

[0053] In another technical solution, the damper with parallel rotating eddy current damping device, the connecting mechanism includes a horizontal plate, which is fixedly connected to the bottom surface of the magnet rotating disk through a connecting rod, and the bottom of the horizontal plate is provided with a slide groove parallel to the rotating shaft, and the top end of any second conductor plate is hung in the slide groove and slidably connected therewith;

[0054] The rotating shaft includes a pitch-adjusting screw, a middle portion of which is provided with an annular limiting groove along the circumferential direction, and two ends are respectively provided with external threads, the magnetic roller is fitted and clamped in the annular limiting groove and is rotatably connected thereto, the two second conductor plates are respectively arranged at the two ends of the pitch-adjusting screw, and any second conductor plate is slidably connected to the pitch-adjusting screw through a middle through-hole; two pitch-adjusting nuts are respectively arranged on the outer sides of the two second conductor plates and are threadedly connected to the pitch-adjusting screw; two compression springs are respectively arranged between the magnetic roller and the two second conductor plates, and any compression spring is sleeved on the pitch-adjusting screw.

[0055] Among them, under the action of the annular limiting groove, the position of the magnetic roller in the length direction of the rotating shaft is relatively fixed, and a spacing nut is provided on the outer side of the second conductor plate and a compression spring is provided on the inner side. Force balance is achieved under the action of the spring elastic force and the locking force of the spacing nut. When the spacing nut is rotated, the second conductor plate moves synchronously with the spacing nut under the action of the compression spring and re-achieves balance at the new position. During the linear movement of the second conductor plate along the axial direction of the rotating shaft, it also slides relative to the horizontal plate. An embedded connection is adopted between the top of the second conductor plate and the slide groove. Under the limiting action of the slide groove, the second conductor plate is always hung on the bottom of the horizontal plate, that is, the relative sliding of the second conductor plate will not affect the connection of the connecting mechanism to the second conductor plate in the height direction, thereby realizing the refined and stable adjustment of the spacing between the second conductor plate and the magnetic roller, and further realizing the multi-stage continuous adjustment of the rolling rotating eddy current damping, reducing the installation and subsequent operation and maintenance costs of the damper, so that the damper can better adapt to the vibration suppression requirements under different working conditions and environments, and achieve the best vibration suppression effect.

[0056] When the above-mentioned telescopic mechanism or the technical solution of the pitch-adjusting screw is adopted (i.e. the spacing between the first conductor plate and the magnet rotating disk or the spacing between the second conductor plate and the magnet roller is adjustable), the basic principle of achieving damping graded adjustment by adjusting the spacing between the magnet and the corresponding conductor plate is as follows:

[0057] Existing studies have shown that the simplified calculation formula of the eddy current damping coefficient under certain conditions can be expressed as:

[0058]

[0059] In the formula: v is the relative movement speed between the conductor plate and the magnet; a and b are the length and width of the magnet respectively; t is the thickness of the conductor plate; B is the magnetic induction intensity; σ is the conductivity of the conductor plate.

[0060] According to the calculation formula of magnetic field strength, the magnetic induction intensity is inversely proportional to the square of the distance from the magnet surface, that is, B , R is the distance between the magnet and the corresponding conductor plate. From this, we can know that the eddy current damping coefficient C is inversely proportional to the fourth power of the distance from the magnet surface, that is, C . Obviously, as the distance between the magnet and the conductor plate changes, the eddy current damping coefficient C changes rapidly at the fourth power of the distance change. Therefore, when adjusting the distance between the first conductor plate and the magnet rotating disk and (or) the distance between the second conductor plate and the magnet roller, the damping of the corresponding damping disk can be finely graded. In addition, since the total damping of the damper in the present invention is the superposition of the first damping disk and multiple second damping disks, the damping of each damping disk can be graded for different damping requirements, one or both of them can be selected to meet a wider range and more precise damping change requirements.

[0061] In another technical solution, in the damper with a parallel rotating eddy current damping device, the center points of the mass block group, the first conductor plate and the magnet rotating disk are all located on the axis of the screw. In the above technical solution, the screw is fixed at the center of the bottom surface of the mass block group, and the vertical perforations are arranged at the center position (center of the circle) of the first conductor plate and the magnet rotating disk, that is, the screw, the nut, the first conductor plate and the magnet rotating disk are all coaxially arranged, and the multiple second damping disks are evenly distributed on the bottom surface of the magnet rotating disk with the center of the magnet rotating disk as the center. Thereby, the internal structure of the damper is further optimized, the rotation synchronization and consistency of each rotating structure are guaranteed, so that the actual performance of the damper can better meet the design requirements, which is conducive to the realization of precise damping design.

[0062] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A damper with a parallel rotating eddy current damping device, characterized in that: include: The mounting seat comprises a bottom plate; a plurality of upright posts which are arranged at intervals along the circumference of the bottom plate around the top surface thereof; A mass block group, which is matched and clamped between the plurality of columns and slidably connected thereto along a height direction; A plurality of elastic elements are supported at intervals along the circumference of the mass block group around the bottom surface thereof, one end of any elastic element is fixedly connected to the mass block group, and the other end is vertically and downwardly fixedly connected to the bottom plate; A screw rod is vertically fixed to the middle of the bottom surface of the mass block group; a nut is sleeved on the screw rod and threadedly connected with the screw rod; A first damping disk, comprising a first conductor plate, which is arranged in parallel between the bottom plate and the mass block group and fixed to the middle of the bottom plate through a support frame; a magnet rotating disk, which is arranged in parallel just below the first conductor plate, the first conductor plate and the middle of the magnet rotating disk are both provided with vertical through holes coaxial with the screw, the nut is passed through two of the vertical through holes and fixedly connected to the magnet rotating disk; A plurality of second damping disks are arranged at intervals along the circumference of the magnet rotating disk, and any second damping disk includes a magnet roller, which is supported on the bottom plate and connected to the bottom plate in a rolling manner; two second conductor plates are arranged on both sides of the magnet roller relative to each other through a rotating shaft and connected to the bottom plate in a rotating manner, and the rotating shaft is arranged along the radial direction of the magnet rotating disk, and the two second conductor plates are fixedly connected to the bottom surface of the magnet rotating disk through a connecting mechanism, and the connecting mechanism includes a horizontal plate, which is fixedly connected to the bottom surface of the magnet rotating disk through a connecting rod, and a sliding groove parallel to the rotating shaft is provided at the bottom of the horizontal plate, and the top end of any second conductor plate is hung in the sliding groove and connected to the sliding groove in cooperation with the sliding groove; The rotating shaft includes a pitch-adjusting screw, a middle portion of which is provided with an annular limiting groove along the circumferential direction, and two ends are respectively provided with external threads, the magnetic roller is fitted and clamped in the annular limiting groove and is rotatably connected thereto, the two second conductor plates are respectively arranged at the two ends of the pitch-adjusting screw, and any second conductor plate is slidably connected to the pitch-adjusting screw through a middle through-hole; two pitch-adjusting nuts are respectively arranged on the outer sides of the two second conductor plates and are threadedly connected to the pitch-adjusting screw; two compression springs are respectively arranged between the magnetic roller and the two second conductor plates, and any compression spring is sleeved on the pitch-adjusting screw.

2. The damper with parallel rotating eddy current damping device according to claim 1, characterized in that: The mass block group includes a box body, which is a hollow structure with an opening at the top; a plurality of partitions, which are arranged in the box body and divide the upper space of the box body into a plurality of accommodating cavities, each accommodating cavity has the same size and is located at the same height; a first mass block, which is fixed in the lower space of the box body; and a plurality of second mass blocks, which are arranged in the plurality of accommodating cavities, and any second mass block is adapted to the cross-sectional shape of the accommodating cavity.

3. The damper with parallel rotating eddy current damping device according to claim 1, characterized in that: The mounting seat also includes a plurality of guide rails, which are arranged corresponding to the plurality of columns, and any guide rail is fixed on the side wall adjacent to the corresponding column and the mass block group along the height direction; a plurality of sliders, which are arranged one by one corresponding to the plurality of guide rails, and any slider is fixed on the outer side wall of the mass block group and is slidably connected with the corresponding guide rail.

4. The damper with parallel rotating eddy current damping device according to claim 1, characterized in that: The connection parts of the elastic element, the mass block group and the bottom plate are respectively fixed with stoppers, and the ends of the elastic element are sleeved with the corresponding stoppers.

5. The damper with parallel rotating eddy current damping device according to claim 1, characterized in that: The support frame includes a plurality of inverted L-shaped brackets which are arranged at intervals along the circumference of the first conductor plate. The vertical portion of any inverted L-shaped bracket is located outside the first conductor plate and fixed to the bottom plate, and the horizontal portion is fixedly connected to the first conductor plate.

6. The damper with parallel rotating eddy current damping device according to claim 5, characterized in that: The vertical portion of the inverted L-shaped bracket is a telescopic mechanism, which is configured to adjust the distance between the first conductor plate and the bottom plate.

7. The damper with parallel rotating eddy current damping device according to claim 1, characterized in that: The center points of the mass block group, the first conductor plate and the magnet rotating disk are all located on the axis of the screw.

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