CN112726862A - Horizontal moving type pendulum eddy current tuned mass vibration damper - Google Patents
Horizontal moving type pendulum eddy current tuned mass vibration damper Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention belongs to the technical field of vibration reduction and shock resistance of civil engineering structures, and particularly relates to a horizontal moving type swinging eddy current tuned mass vibration damping device which comprises a swinging suspension element, a tuned mass, a permanent magnet connecting frame, a conductor plate and a magnetic conduction plate, wherein the tuned mass is suspended on the swinging suspension element, the permanent magnet is fixed on the permanent magnet connecting frame, the magnetic conduction plate is overlapped above the conductor plate, the conductor plate is positioned between the tuned mass and the permanent magnet and has a gap with the permanent magnet, and a permanent magnet and conductor plate gap keeping device is arranged between the tuned mass and the magnetic conduction plate. The horizontal moving type pendulum eddy current tuned mass vibration damper has the advantages of simple structure, convenience in adjustment, low manufacturing cost, more stable system damping ratio, better vibration damping effect and the like, has higher cost performance, can be widely applied to wind vibration and earthquake response control engineering of various skyscrapers, and has very wide market application prospect.
Description
Technical Field
The invention belongs to the technical field of vibration reduction and shock resistance of civil engineering structures, and particularly relates to a horizontal moving type swinging eddy current tuned mass vibration reduction device.
Background
In recent decades, with the rapid development of urban construction, various skyscrapers in cities are increasing, and wind vibration resistance and earthquake resistance technologies of skyscrapers are also rapidly developed, wherein Tuned Mass dampers (TMD for short) are widely applied to wind vibration and earthquake response control of skyscrapers.
Because the total mass of the skyscraper is extremely huge, the natural frequency is low, the mass of the required TMD is generally in the hundred-ton grade, and the cost of the adopted steel spring is high, the TMD of the current skyscraper basically adopts a pendulum structure, such as a Taiwan 101 building, a Hangzhou bay bridge sightseeing tower and the like. The traditional pendulum TMD hangs a mass block on a structural member at the top end of a skyscraper with a certain cable length, and is assisted by a liquid damper to provide damping, because the skyscraper vibrates frequently under the action of wind power, the pendulum TMD also works very frequently, the requirements on the reliability and the service life of the liquid damper are very high, and the maintenance and replacement cost is also very high.
In order to solve the above problems, in recent years, a pendulum TMD technique for providing damping by using an eddy current device has been widely used, for example, a novel pendulum eddy current damping tuned mass damper described in patent No. 201610870649.8, and such a technical solution has the advantages of long service life, convenient damping adjustment, extremely small structural friction, high sensitivity, and basically no maintenance, and is well accepted in the industry. However, in practice, it has been found that, because the motion trajectories of the mass block and the permanent magnet are on a curved surface when the pendulum TMD is in operation, and the curved surface changes with the change of the cable length, in order to ensure stable performance parameters of the system, the copper plate and the magnetic conductive iron plate must be processed into curved surfaces that can be adjusted at any time so as to correspond to the motion curved surfaces of the mass block and the permanent magnet, which not only greatly increases the difficulty of processing and manufacturing the product, but also inevitably increases the complexity of the system structure, for example, the invention patent No. 201310080464.3 discloses a pendulum eddy current tuned mass damper device, which has a link structure arranged inside the adjustment frame of the copper plate and the magnetic conductive iron plate, and adjusts the angles and heights of the permanent magnet, the copper plate and the magnetic conductive iron plate synchronously by adjusting the link structure to adapt to the change of the swing radius, such adjustment structure and adjustment mode have complicated structure and troublesome operation, the space positions between the motion curved surfaces of the mass block and the permanent magnet and the matching curved surfaces of the copper plate and the magnetic conduction iron plate are necessarily relatively moved after adjustment, and the distance between the two curved surfaces is always changed in the swinging process, so that the size of eddy current damping generated in the copper plate is very unstable, the swinging amplitude of the mass block and the permanent magnet is limited, otherwise, the mass block and the permanent magnet are easily interfered with the copper plate, the whole vibration damping performance of the pendulum type eddy current TMD is influenced, and meanwhile, the manufacturing cost is greatly increased.
Disclosure of Invention
The invention aims to solve the problems and provides a horizontal moving type pendulum eddy current tuned mass vibration damper which is simple in structure, convenient to adjust, low in manufacturing cost, more stable in system damping ratio and better in vibration damping effect.
The invention relates to a horizontal moving type swinging eddy current tuned mass vibration damper, which is realized by comprising a swinging suspension element, a tuned mass, a permanent magnet connecting frame, a conductor plate and a magnetic conduction plate, wherein the tuned mass is suspended on the swinging suspension element, the permanent magnet is fixed on the permanent magnet connecting frame, the magnetic conduction plate is superposed above the conductor plate, the conductor plate is positioned between the tuned mass and the permanent magnet and has a gap with the permanent magnet, a permanent magnet and conductor plate interval keeping device is arranged between the tuned mass and the magnetic conduction plate, and the conductor plate and the permanent magnet are always kept to move horizontally in a relative mode in the working process and the vertical interval between the conductor plate and the permanent magnet is always kept unchanged by the permanent magnet and conductor plate interval keeping. The horizontal moving type pendulum eddy current tuned mass damping device can also comprise a bracket, and the tuned mass is suspended on the bracket through a swinging suspension element.
The device for keeping the distance between the permanent magnet and the conductor plate comprises a horizontal synchronous mechanism and a vertical distance-keeping mechanism.
The horizontal synchronization mechanism has the function of adjusting the vertical spatial position of the conductor plate at any time to enable the permanent magnet and the conductor plate to keep relative horizontal movement all the time in the working process, and the specific structural form of the horizontal synchronization mechanism can be diversified.
The vertical distance-fixing mechanism has the function that the vertical distance between the permanent magnet and the conductor plate is kept unchanged all the time in the working process, and the specific structural form of the vertical distance-fixing mechanism can be diversified, for example, (1) the vertical distance-fixing mechanism comprises a universal ball bearing or a universal wheel, the universal ball bearing is fixedly connected with the permanent magnet connecting frame, a universal ball in the universal ball bearing is contacted with the lower surface of the conductor plate or the magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the surface of the universal ball; or the universal wheel is fixedly connected with the permanent magnet connecting frame, the roller in the universal wheel is contacted with the lower surface of the conductor plate or the magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the surface of the roller. (2) The universal ball bearing can also be fixedly connected with the conductor plate or the magnetic conduction plate, and a universal ball in the universal ball bearing is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame; or the universal wheel is fixedly connected with the conductor plate or the magnetic conduction plate, and the roller in the universal wheel is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, so that a good technical effect can be realized. (3) The vertical distance-setting mechanism comprises a supporting platform and a universal ball bearing or the supporting platform and a universal wheel, the supporting platform is fixedly arranged on an external fixed structure or a bracket, the universal ball bearing is fixedly connected with a conductor plate or a magnetic conduction plate, and a universal ball in the universal ball bearing is in contact with the upper surface of the supporting platform and can roll on the surface of the supporting platform; or the universal wheel is fixedly connected with the conductor plate or the magnetic conduction plate, and the roller in the universal wheel is contacted with the upper surface of the supporting platform and can roll on the surface of the supporting platform. (4) The vertical distance-setting mechanism comprises a height-adjusting base and a universal ball bearing or a height-adjusting base and a universal wheel, the height-adjusting base is fixed on an external fixed structure or a bracket, the universal ball bearing is fixed on the height-adjusting base, a universal ball in the universal ball bearing is contacted with the lower surface of a conductor plate or a magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the top surface of the universal ball; or the universal wheel is fixed on the heightening base, the roller in the universal wheel is contacted with the lower surface of the conductor plate or the magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the top surface of the roller.
The horizontal moving type pendulum eddy current tuned mass damping device can further comprise a frequency adjusting device, the specific structure of the frequency adjusting device can be diversified, for example, the frequency adjusting device is a frequency modulation spring; or, the frequency adjusting device is a working pendulum length adjuster for swinging the suspension element. When the frequency adjusting device is a frequency modulation spring, the frequency modulation spring is arranged between the tuning mass and the bracket, or between the bracket and the magnetic conduction plate or the conductor plate, or between the tuning mass and the external fixed structure, or between the external fixed structure and the magnetic conduction plate or the conductor plate; in addition, a fixed connecting bracket may be provided on the external fixing structure or the bracket, and the frequency modulation spring is provided between the tuning mass and the fixed connecting bracket, or between the magnetic conductive plate or the conductor plate and the fixed connecting bracket.
The horizontal moving type pendulum eddy current tuned mass vibration damper can further comprise a safety limiting device, and the safety limiting device is correspondingly arranged on the periphery of the tuned mass. For example, the safety limit device comprises a limit stop or a combined limit stop composed of the limit stop and a limit damper, and the like.
In order to ensure that the gap size between the permanent magnet and the conductor plate is consistent all the time, an auxiliary contact mechanism can be additionally arranged in the distance keeping device between the permanent magnet and the conductor plate of the horizontal moving type pendulum eddy current tuned mass damping device, the auxiliary contact mechanism is arranged between the tuned mass and the magnetic conduction plate, and the auxiliary contact mechanism comprises a pre-compression spring.
The swing suspension element in the invention includes specific structural forms such as a sling, a sling chain or a suspender; the material of the conductor plate is aluminum, copper, an aluminum alloy, a copper alloy, or the like; the magnetic conduction plate is preferably made of steel and the like.
According to the horizontal moving type swinging eddy current tuned mass vibration damping device, the distance keeping device for the permanent magnet and the conductor plate is arranged, so that the conductor plate swings along with the curve of the tuned mass during working and is converted into translation, the conductor plate and the permanent magnet keep horizontal movement relatively during working, and the vertical distance between the conductor plate and the permanent magnet is kept unchanged all the time. Compared with the prior art, it has following advantage: (1) when the device works, the permanent magnet and the conductor plate are in relative translation, the size of a gap between the permanent magnet and the conductor plate is always unchanged, no matter how large the tuning mass and the swing amplitude of the conductor plate are, the tuning mass and the conductor plate never interfere with each other, the safety is good, the damping ratio of the system is very stable, and the vibration reduction performance of a product is greatly improved; (2) the damping ratio of the system is more accurate and convenient to adjust, only the size of a gap between the permanent magnet and the conductor plate needs to be directly adjusted, the adjustment precision is easy to guarantee, other synchronous adjusting mechanisms do not need to be used, the system is simpler in structure and easier to operate, the manufacturing cost is reduced, and the operation efficiency is improved; (3) the conductor plate and the permanent magnet keep relatively horizontal movement in the working process, so that the conductor plate and the permanent magnet do not need to be matched with each other by processing a curved surface like the traditional technology, the processing and manufacturing cost and difficulty of the horizontal movement type pendulum type eddy current tuned mass damping device are greatly reduced, the economy is better, and the cost performance is higher.
In conclusion, the horizontal movement type pendulum eddy current tuned mass vibration damper has the advantages of simple structure, convenience in adjustment, low manufacturing cost, more stable system damping ratio, better vibration damping effect and the like, has higher cost performance, can be widely applied to wind vibration and earthquake response control engineering of various skyscrapers, and has very wide market application prospect.
Drawings
Fig. 1 is a schematic structural diagram of a horizontal movement type pendulum eddy current tuned mass damping device according to the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a second schematic structural diagram of the horizontal movement type pendulum eddy current tuned mass damping device according to the present invention.
Fig. 4 is a third schematic structural diagram of the horizontal movement type pendulum eddy current tuned mass damping device according to the present invention.
Fig. 5 is a fourth schematic structural diagram of the horizontal movement type pendulum eddy current tuned mass damping device of the present invention.
FIG. 6 is a fifth schematic view of the structure of the horizontal movement type pendulum eddy current tuned mass damping device of the present invention.
Fig. 7 is a sixth schematic structural view of the horizontal movement type pendulum eddy current tuned mass damping device of the present invention.
Fig. 8 is a seventh schematic structural diagram of the horizontal movement type pendulum eddy current tuned mass damping device according to the present invention.
Fig. 9 is an eighth schematic structural view of the horizontal movement type pendulum eddy current tuned mass damping device according to the present invention.
Detailed Description
Example one
As shown in fig. 1 and fig. 2, the present invention relates to a horizontal movement type pendulum eddy current tuned mass damping device, which comprises a pendulum suspension element 2, a tuned mass 3, a permanent magnet 5, a permanent magnet connecting frame 4, a conductor plate 6 and a magnetic conduction plate 7, wherein the tuned mass 3 is suspended on the pendulum suspension element 2 and suspended on an external fixing structure 13 above through the pendulum suspension element 2, the permanent magnet 5 is fixed on the permanent magnet connecting frame 4 and fixed on the external fixing structure 13 below together, the magnetic conduction plate 7 is stacked above the conductor plate 6, the conductor plate 6 is located between the tuned mass 3 and the permanent magnet 5 and has a gap with the permanent magnet 5, and a device for maintaining the gap between the permanent magnet and the conductor plate is arranged between the tuned mass 3 and the magnetic conduction plate 7. The device for keeping the distance between the permanent magnet and the conductor plate enables the conductor plate and the permanent magnet to keep relative horizontal movement and keep the vertical distance between the conductor plate and the permanent magnet unchanged all the time in the working process, and comprises a horizontal synchronization mechanism and a vertical distance-keeping mechanism. The horizontal synchronization mechanism comprises a joint bearing 9, a connecting support 19 and a guide post 8, the guide post 8 is connected with the joint bearing 9 in a matching mode, the joint bearing 9 is fixedly arranged on the magnetic conduction plate 7 through the connecting support 19, the guide post 8 is correspondingly and fixedly arranged on the tuning mass 3, and the vertical space position of the conductor plate 6 can be adjusted at any time through the horizontal synchronization mechanism, so that the conductor plate 6 and the permanent magnet 5 can always keep relative horizontal movement in the working process; the vertical distance-fixing mechanism comprises a universal ball bearing 10, the universal ball bearing 10 is fixedly connected with the permanent magnet connecting frame 4, a universal ball in the universal ball bearing 10 is in contact with the lower surface of the conductor plate 6, the corresponding conductor plate 6 can translate on the surface of the universal ball, and the vertical distance between the conductor plate 6 and the permanent magnet 5 is kept unchanged all the time in the working process through the vertical distance-fixing mechanism.
When the horizontal moving type pendulum eddy current tuned mass damping device is applied, the horizontal moving type pendulum eddy current tuned mass damping device is fixedly arranged in a skyscraper or other high-rise building structures, when the skyscraper or other high-rise building structures vibrate due to wind vibration or earthquake, due to inertia, the tuned mass is suspended on the swinging suspension element and is opposite to the swinging direction of the building structures, and due to phase difference of the motions of the skyscraper and other high-rise building structures, the motion of the tuned mass has a blocking effect on the motion of the building structures, so that the vibration amplitude and the acceleration of the building structures can be effectively reduced. In the process, the mechanical energy of the vibration of the building structure causes the tuning mass to swing through the swinging suspension element, and the tuning mass is converted into the kinetic energy and the potential energy of the tuning mass; in the process of the swinging of the tuning mass, the permanent magnet at the bottom and the conductor plate generate electromagnetic induction, eddy current is generated in the conductor plate, the eddy current generates an electromagnetic field with the polarity opposite to that of the magnetic field of the permanent magnet, the two electromagnetic fields with the opposite polarities block the relative motion between the permanent magnet and the conductor plate, and an eddy current damping effect is generated. Through the process, the mechanical energy generated when the building structure vibrates is finally converted into the heat energy generated by the eddy current in the conductor plate by utilizing the horizontal moving type swinging eddy current tuned mass vibration damper, so that the technical effects of damping and consuming energy and protecting the building structure are realized. It should be noted that, in the working process of the present invention, with the swinging of the tuning mass 3, the distance between the tuning mass 3 and the permanent magnet 5 changes constantly, and the horizontal synchronization mechanism and the vertical spacing mechanism in the permanent magnet and conductor plate distance keeping device start to cooperate with each other, wherein the universal ball bearing 10, the conductor plate 6 and the magnetic conduction plate 7 as a whole slide relatively in the vertical direction through the connection support 19 and the knuckle bearing 9 and the guide post 8, so that the universal ball bearing 10 as the vertical spacing mechanism is always in contact with the lower surface of the conductor plate 6 and the conductor plate 6 can translate on the top surface of the universal ball bearing, thereby ensuring that the relative horizontal movement between the permanent magnet 5 and the guide plate 6 can be realized in the whole working process, but the vertical distance between the permanent magnet 5 and the guide plate 6 is always kept constant.
According to the horizontal moving type swinging eddy current tuned mass vibration damping device, the distance keeping device for the permanent magnet and the conductor plate is arranged, so that the conductor plate swings along with the curve of the tuned mass during working and is converted into translation, the conductor plate and the permanent magnet keep horizontal movement relatively during working, and the vertical distance between the conductor plate and the permanent magnet is kept unchanged all the time. Compared with the prior art, it has following advantage: (1) when the device works, the permanent magnet and the conductor plate are in relative translation, the size of a gap between the permanent magnet and the conductor plate is always unchanged, no matter how large the tuning mass and the swing amplitude of the conductor plate are, the tuning mass and the conductor plate never interfere with each other, the safety is good, the damping ratio of the system is very stable, and the vibration reduction performance of a product is greatly improved; (2) the damping ratio of the system is more accurate and convenient to adjust, only the size of a gap between the permanent magnet and the conductor plate needs to be directly adjusted, the adjustment precision is easy to guarantee, other synchronous adjusting mechanisms do not need to be used, the system is simpler in structure and easier to operate, the manufacturing cost is reduced, and the operation efficiency is improved; (3) the conductor plate and the permanent magnet keep relatively horizontal movement in the working process, so that the conductor plate and the permanent magnet do not need to be matched with each other by processing a curved surface like the traditional technology, the processing and manufacturing cost and difficulty of the horizontal movement type pendulum type eddy current tuned mass damping device are greatly reduced, the economy is better, and the cost performance is higher.
In conclusion, the horizontal movement type pendulum eddy current tuned mass vibration damper has the advantages of simple structure, convenience in adjustment, low manufacturing cost, more stable system damping ratio, better vibration damping effect and the like, has higher cost performance, can be widely applied to wind vibration and earthquake response control engineering of various skyscrapers, and has very wide market application prospect.
It should be noted that the natural frequency of the system can be adjusted by adjusting the length of the swinging suspension element in the horizontal movement type swinging eddy current tuned mass damping device; the damping of the system can be adjusted by adjusting the magnetic field of the permanent magnet, the thickness of the conductor plate, the thickness of the magnetic conductive plate, the gap between the permanent magnet and the conductor plate and the like; in addition, the tuning mass of the present invention may be constructed in various forms, such as steel plates stacked together, or a sand box, a water tank, etc., as long as the tuning mass provides a suitable mass. In addition, the swing suspension element in the present invention includes specific structural forms such as a sling, a sling chain, or a suspension rod, the material of the conductor plate may be aluminum, copper, aluminum alloy, or copper alloy, and the material of the magnetic conductive plate is preferably steel, and these descriptions are also applicable to other embodiments of the present invention, and will not be repeated herein; in addition, besides the universal ball bearing, the vertical distance-fixing mechanism can also adopt a universal wheel, when the vertical distance-fixing mechanism is applied, the universal wheel is fixedly connected with the permanent magnet connecting frame, and a roller in the universal wheel is in contact with the upper surface of the conductor plate and can roll on the surface of the conductor plate, so that a good effect can be realized; fourthly, based on the technical principle of the present invention, the specific number and arrangement of the swing suspension elements, the specific number and arrangement of the permanent magnets, and the specific number and arrangement of the permanent magnet horizontal movement devices are not limited to those shown in fig. 1 and 2, and can be designed and selected according to the engineering requirements in practice, and can also achieve good technical effects. The above description is based on a simple variation of the technical principle of the present invention, and the description is given herein with the accompanying characters, and is within the scope of the claims of the present invention.
Example two
As shown in fig. 3, the horizontal movement type pendulum eddy current tuned mass damping device of the present invention is different from the first embodiment in that the device further comprises a support 1, the tuned mass 3 is suspended on the top of the support 1 through a swinging suspension element, and the permanent magnet 5 and the permanent magnet connecting frame 4 are fixedly mounted on the base 11 of the support 1.
In the horizontal movement type pendulum eddy current tuned mass damping device, the bracket 1 is additionally arranged, so that the requirement on peripheral external fixed structures during installation is greatly reduced, and the device is more convenient to apply.
EXAMPLE III
As shown in fig. 4, the difference between the horizontal movement type pendulum eddy current tuned mass damping device of the present invention and the second embodiment is that the oscillating bearing 9 is fixedly disposed on the tuned mass 3 through the connecting support 19, and the guide post 8 is correspondingly and fixedly disposed on the magnetic conductive plate 7; in addition, the magnetic flux-concentrating device also comprises a frequency adjusting device, specifically, a frequency adjusting spring 12, wherein a fixed connecting bracket 17 is fixedly arranged on a base 11 of the bracket 1, and the frequency adjusting spring 12 is; in addition, an auxiliary contact mechanism is also included in the permanent magnet-to-conductor plate spacing device, the auxiliary contact mechanism being disposed between the tuning mass 3 and the magnetic conductive plate 7, the auxiliary contact mechanism including a pre-compressed spring 20.
Compared with the embodiment, the technical scheme of the embodiment is additionally provided with the frequency modulation spring, so that the natural frequency of the system can be adjusted only by using the frequency modulation springs with different rigidities, the swinging suspension elements with different lengths do not need to be replaced, and the operation is simpler and more convenient; in addition, because the auxiliary contact mechanism is additionally arranged, in the working process, when the tuned mass swings, under the back pressure assistance of the pre-compression spring 20, the vertical height change of the vertical relative movement compensation tuned mass can be timely generated between the guide post 8 and the knuckle bearing 9, the universal ball bearing 10 can be ensured to be always in effective contact with the lower surface of the conductor plate 6, the gap size between the permanent magnet 5 and the conductor plate 6 is always kept unchanged, the damping ratio of the system is very stable, and the vibration reduction performance of the product can be greatly improved.
Based on the technical principle of the embodiment, the fixed connecting bracket can also be arranged on the external fixed structure, and then the frequency modulation spring is arranged between the magnetic conduction plate and the fixed connecting bracket, so that the same technical effect can be realized; in addition, the frequency modulation spring can be arranged between the tuning mass and the fixed connecting bracket or between the conductor plate and the bracket besides being arranged between the magnetic conduction plate and the fixed connecting bracket, so that a good technical effect can be realized.
Example four
As shown in fig. 5, the difference between the horizontal movement type pendulum eddy current tuned mass damping device of the present invention and the technical solution shown in fig. 4 is that the bracket 1 is directly fixed on the external fixing structure 13, the permanent magnet 5 is fixed on the permanent magnet connecting frame 4 and both are fixed on the external fixing structure 13 below, the joint bearing 9 is fixedly arranged on the magnetic conductive plate 7 through the connecting support 19, and the guide post 8 is correspondingly and fixedly arranged on the tuned mass 3; in addition, the device also comprises a frequency adjusting device, wherein the frequency adjusting device is specifically a frequency adjusting spring 12, and the frequency adjusting spring 12 is arranged between the tuning mass 3 and the bracket 1; in addition, the tuning mass further comprises a safety limiting device, the safety limiting device is correspondingly arranged on the periphery of the tuning mass 3, the safety limiting device is specifically a plurality of limiting stops 14, the limiting stops 14 are fixedly arranged on the external fixing structure 13, and the limiting stops 14 are further provided with elastic layers 15 for providing buffering.
Compared with the embodiment, in the technical scheme of the embodiment, the frequency modulation spring is arranged between the tuning mass and the bracket, and a fixed connecting bracket is not required to be arranged additionally, so that the structure is simpler, and the frequency modulation spring can also be arranged between the magnetic conduction plate and the bracket based on the technical principle of the embodiment; in addition, the technical scheme of the invention is additionally provided with the safety limiting device, when the skyscraper or other high-rise building structures provided with the tuning mass vibrating beyond the design value, the tuning mass can touch the safety limiting device after swinging, and the limit stopper can limit the swinging range of the tuning mass, thereby ensuring that no harmful effect is generated on the building structures. Of course, based on the technical principle of the present example, if the safety limiting device of the present example is added in the technical scheme shown in fig. 3, the limiting stopper can also be arranged on the base of the bracket, and a good technical effect can also be achieved, all of which are within the protection scope of the present invention.
EXAMPLE five
As shown in fig. 6, the difference between the horizontal movement type pendulum eddy current tuned mass damping device of the present invention and the third embodiment is that the safety limiting device is a combined limiting stopper formed by a limiting stopper 14 and a limiting damper 16, wherein the limiting stopper 14 is an annular steel ring, and is disposed around the tuned mass, a plurality of limiting dampers 16 are disposed, two ends of the limiting damper 16 are respectively fixedly connected with the limiting stopper 14 and a fixed connecting bracket 17, and the fixed connecting bracket 17 is fixedly disposed on the external fixing structure 13; in addition, the frequency adjusting device is a working pendulum length adjuster 18 of a swinging suspension element, the working pendulum length adjuster 18 is connected with the bracket 1, the swinging suspension element is specifically a sling, and the swinging suspension element 2 passes through the working pendulum length adjuster 18; in addition, the universal ball in the universal ball bearing 10 as the vertical distance-fixing mechanism is contacted with the lower surface of the magnetic conduction plate 7 and the corresponding magnetic conduction plate 7 can translate on the top surface of the universal ball.
In the technical scheme of the embodiment, as the working pendulum length regulator 18 is arranged, the effective working pendulum length of the swinging suspension element can be changed by adjusting the position of the working pendulum length regulator up and down, so that the natural frequency of the system is changed; in addition, based on the technical principle of the embodiment, the swinging suspension element can also adopt a suspension chain, and a good technical effect can be realized; in addition, the safety limiting device is a combined limiting stopper consisting of a limiting stop block and a limiting damper, and the limiting damper is additionally arranged, so that stronger buffering and energy consumption can be provided, and the protection reliability and safety are better when the vibration exceeds the design strength; in addition, because the magnetic conduction plate 7 is matched with the universal ball bearing 10 to realize translation, the size of the conductor plate 6 can be better optimized and controlled, the use amount of high-price metal materials adopted by the conductor plate 6 can be reduced, and the manufacturing cost is reduced.
It should be noted that, based on the technical principle described in this example, the limit damper in the safety limit device may also have one end fixedly connected to the limit stop and the other end fixedly connected to the bracket; in addition, in the solution shown in fig. 3, if the safety limiting device described in this example is used, the fixed connection bracket can also be arranged on the base of the bracket, which are all simple variations based on the technical principle of the present invention, and are within the protection scope of the present invention.
EXAMPLE six
As shown in fig. 7, the difference between the horizontal movement type pendulum eddy current tuned mass damping device of the present invention and the fifth embodiment is that the vertical distance-fixing mechanism includes a universal ball bearing 10 and a height-adjusting base 21, the universal ball bearing 10 is fixed on the height-adjusting base 21, the height-adjusting base 21 is fixed on the external fixing structure 13, a universal ball in the universal ball bearing 10 contacts with the lower surface of the magnetic conductive plate 7, and the corresponding magnetic conductive plate 7 can translate on the top surface of the universal ball.
The advantages of the solution described in this example are similar to those of the fifth embodiment and will not be repeated here. It should be noted that, because the independent height-adjusting base 21 is arranged, the size of the permanent magnet connecting frame 4 can be optimally set according to the requirement, which is beneficial to reducing the material usage and the manufacturing cost; on the other hand, the height of the top surface of the universal ball bearing is adjusted more conveniently and flexibly by utilizing the independent height-adjusting base, and the adjustment can be realized by replacing height-adjusting bases with different thicknesses or by matching with increasing or decreasing gaskets and the like; thirdly, the single heightening base is arranged, the size of the heightening base is easy to optimize, the material selection range is wider, and the cost is further reduced. Certainly, based on the technical principle of the embodiment, the vertical distance-fixing mechanism can also adopt a height-adjusting base and a universal wheel, the universal wheel is fixed on the height-adjusting base, a roller in the universal wheel is contacted with the lower surface of a conductor plate or a magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the top surface of the roller, so that similar technical effects can be realized; in addition, if the support shown in fig. 3 or fig. 4 is adopted in the technical solution of this example, that is, the support includes a base, the height-adjustable base can also be fixedly connected to the base of the support, and is also within the protection scope of the present invention.
EXAMPLE seven
As shown in fig. 8, the oscillating eddy current tuned mass damper of the present invention of the horizontal movement type differs from the fifth embodiment in that a universal ball bearing 10 of a vertical distance-fixing mechanism is mounted on a magnetic conductive plate 7, and a universal ball of the universal ball bearing is in contact with the upper surface of a permanent magnet connecting frame 4 and can roll on the surface of the permanent magnet connecting frame 4.
The advantages of the solution described in this example are similar to those of the fifth embodiment and will not be repeated here. It should be noted that, based on the technical principle described in this example, a universal ball bearing may also be fixed on the conductor plate, and a universal ball in the universal ball bearing contacts with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, so that the same technical effect can be achieved; besides the mentioned universal ball bearing, the vertical distance-fixing mechanism can also adopt a universal wheel, the universal wheel is fixedly connected with a conductor plate or a magnetic conduction plate, and a roller in the universal wheel is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, so that a good technical effect can be realized; of course, based on the technical principle of this example, in the technical solutions described in other embodiments of the present invention, an arrangement manner of fixing the universal ball bearing on the conductor plate or the magnetic conductive plate may also be adopted, which is only described herein by characters, and the above contents are all simple changes based on the technical principle described in this example, and are all within the protection scope claimed in the present invention.
Example eight
As shown in fig. 9, the oscillating eddy current tuned mass damping device of the present invention of the horizontal movement type differs from the seventh embodiment in that the vertical distance-fixing mechanism includes a supporting platform 22 and a universal ball bearing 10, the supporting platform 22 is fixedly connected to the external fixing structure 13, the universal ball bearing 10 is fixedly connected to the magnetic conductive plate 7, and a universal ball in the universal ball bearing 10 is in contact with the upper surface of the supporting platform 22 and can roll on the surface of the supporting platform 22.
Compared with the seventh embodiment, the technical solution of the present embodiment, due to the additional support platform, can bring the following beneficial technical effects: on one hand, the working height of the universal ball bearing is adjusted more conveniently and flexibly by utilizing the independent supporting platform, for example, the working height can be adjusted by replacing the supporting platforms with different thicknesses or by matching with increasing or decreasing gaskets and the like; on the other hand, due to the arrangement of the independent supporting platform, the size of the permanent magnet connecting frame is convenient to optimize according to needs, materials are saved, and the manufacturing cost is reduced; moreover, due to the fact that the independent supporting platform is arranged, the size of the supporting platform is easy to optimize, the material selection range is wider, the service life of a product is prolonged, and cost is further reduced.
Based on the technical principle of the embodiment, the vertical distance-fixing mechanism also comprises a supporting platform and a universal wheel, wherein the universal wheel is fixedly connected with a conductor plate or a magnetic conduction plate, and a roller in the universal wheel is in contact with the upper surface of the supporting platform and can roll on the surface of the supporting platform, so that a good technical effect can be realized; in addition, if the support shown in fig. 3 or fig. 4 is adopted in the technical solution of this example, that is, when the support includes a base, the supporting platform can be fixedly connected to the base of the support, and a good technical effect can also be achieved.
The embodiments of the present invention are mainly used for facilitating understanding of the technical principles of the present invention, and are not limited to the contents described in the embodiments, and the technical contents described in the embodiments may also be used interchangeably.
Claims (16)
1. A horizontal movement type pendulum eddy current tuned mass vibration damper comprises a pendulum suspension element, a tuned mass, a permanent magnet connecting frame, a conductor plate and a magnetic conduction plate, wherein the tuned mass is suspended on the pendulum suspension element, and the permanent magnet is fixed on the permanent magnet connecting frame.
2. The horizontally moving pendulum eddy current tuned mass damper according to claim 1, further comprising a bracket from which the tuned mass is suspended by a pendulum suspension element.
3. The horizontal migration type pendulum eddy current tuned mass damper according to claim 1 or 2, wherein said permanent magnet and conductor plate spacing holding means comprises a horizontal synchronization mechanism and a vertical spacing mechanism.
4. The device as claimed in claim 3, wherein the horizontal synchronizing mechanism comprises a knuckle bearing, a connecting support and a guiding post, the guiding post is connected with the knuckle bearing in a matching manner, the knuckle bearing is fixedly arranged on the tuning mass or the magnetic conductive plate through the connecting support, and the guiding post is correspondingly arranged on the magnetic conductive plate or the tuning mass.
5. The device according to claim 3, wherein the vertical spacing mechanism comprises a universal ball bearing or a universal wheel, the universal ball bearing is fixedly connected with the permanent magnet connecting frame, a universal ball in the universal ball bearing is in contact with the lower surface of the conductor plate or the magnetic conductive plate, and the corresponding conductor plate or the magnetic conductive plate can translate on the top surface of the universal ball; or the universal wheel is fixedly connected with the permanent magnet connecting frame, the roller in the universal wheel is contacted with the lower surface of the conductor plate or the magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the top surface of the roller.
6. The device of claim 3, wherein the vertical spacing mechanism comprises a height-adjusting base and a universal ball bearing, or a height-adjusting base and a universal wheel, the height-adjusting base is fixed on the external fixing structure or the bracket, the universal ball bearing is fixed on the height-adjusting base, a universal ball in the universal ball bearing is in contact with the lower surface of the conductor plate or the magnetic conductive plate, and the corresponding conductor plate or the magnetic conductive plate can translate on the top surface of the universal ball; or the universal wheel is fixed on the heightening base, the roller in the universal wheel is contacted with the lower surface of the conductor plate or the magnetic conduction plate, and the corresponding conductor plate or the magnetic conduction plate can translate on the top surface of the roller.
7. The device of claim 3, wherein the vertical spacing mechanism comprises a universal ball bearing or a universal wheel, the universal ball bearing is fixedly connected with the conductor plate or the magnetic conduction plate, and a universal ball in the universal ball bearing is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame; or the universal wheel is fixedly connected with the conductor plate or the magnetic conduction plate, and the roller in the universal wheel is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame.
8. The device according to claim 3, wherein the vertical spacing mechanism comprises a support platform and a universal ball bearing, or a support platform and a universal wheel, the support platform is fixedly arranged on an external fixed structure or a bracket, the universal ball bearing is fixedly connected with a conductor plate or a magnetic conductive plate, and a universal ball in the universal ball bearing is in contact with the upper surface of the support platform and can roll on the surface of the support platform; or the universal wheel is fixedly connected with the conductor plate or the magnetic conduction plate, and the roller in the universal wheel is contacted with the upper surface of the supporting platform and can roll on the surface of the supporting platform.
9. The horizontal motion pendulum eddy current tuned mass damping device according to claim 1 or 2, further comprising a frequency adjustment device.
10. The horizontally moving pendulum eddy current tuned mass damper according to claim 9, wherein said frequency adjustment device is a frequency modulated spring.
11. The horizontally moving pendulum-type eddy current tuned mass damper according to claim 10, wherein said tuning spring is disposed between the tuned mass and the bracket, or between the bracket and the magnetic conductive plate, or between the bracket and the conductive plate, or between the tuned mass and the external fixed structure, or between the external fixed structure and the magnetic conductive plate or the conductive plate.
12. The device as claimed in claim 10, wherein a fixed connection bracket is provided on the external fixed structure or bracket, and the tuning spring is provided between the tuning mass and the fixed connection bracket, or between the magnetic conductive plate or the conductor plate and the fixed connection bracket.
13. The horizontally moving pendulum eddy current tuned mass damper according to claim 9, wherein said frequency adjustment device is a working pendulum length adjuster of the pendulum suspension element.
14. The horizontal migration type pendulum eddy current tuned mass damping device according to claim 1 or 2, further comprising a safety stop device correspondingly disposed at the periphery of the tuned mass.
15. The tuned mass damper according to claim 14, wherein said safety stop means comprises a limit stop or a combination of a limit stop and a limit damper.
16. The horizontally moving pendulum-type eddy current tuned mass damper according to claim 1 or 2, further comprising an auxiliary contact mechanism in the permanent magnet to conductor plate spacing holder, the auxiliary contact mechanism being disposed between the tuned mass and the magnetic conductive plate, the auxiliary contact mechanism comprising a pre-compressed spring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011611044.XA CN112726862A (en) | 2020-12-30 | 2020-12-30 | Horizontal moving type pendulum eddy current tuned mass vibration damper |
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| CN202011611044.XA CN112726862A (en) | 2020-12-30 | 2020-12-30 | Horizontal moving type pendulum eddy current tuned mass vibration damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863526A (en) * | 2021-09-18 | 2021-12-31 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN115419183A (en) * | 2022-08-31 | 2022-12-02 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
-
2020
- 2020-12-30 CN CN202011611044.XA patent/CN112726862A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863526A (en) * | 2021-09-18 | 2021-12-31 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN113863526B (en) * | 2021-09-18 | 2022-11-25 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN115419183A (en) * | 2022-08-31 | 2022-12-02 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
| CN115419183B (en) * | 2022-08-31 | 2023-10-20 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
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