CN113847384B - Combined type multidimensional vibration damping device with damping amplification function - Google Patents
Combined type multidimensional vibration damping device with damping amplification function Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a composite multidimensional vibration damping device with a damping amplification function, which comprises an external cylinder, wherein a horizontal vibration damping and energy dissipation system and a vertical vibration damping and energy dissipation system are arranged in the cylinder; the horizontal vibration reduction energy consumption system consists of a central mass body, a piston type damper and a vibration absorption layer; the vertical vibration reduction and energy consumption system consists of a central mass body, an electromagnetic rotation energy consumption mechanism and a friction layer; the invention realizes the multidimensional vibration damping control of the structure and enhances the vibration damping and energy consumption effects of the vibration damping device; the piston type damper filled with magnetorheological fluid and the electromagnetic rotating energy consumption device are introduced to realize the adjustability of damping and energy consumption capacity in the vibration process; a part of vibration energy is converted into electric energy through piezoelectric ceramics, the electric energy is directly supplied to the electrified coil, the damping force and the energy consumption capacity of the vibration damping device are adjusted in real time through structural vibration in an energy conversion mode, and full-automatic adjustment and energy self-sufficiency of the vibration damping device are achieved.
Description
Technical Field
The invention belongs to the field of vibration control of civil engineering, and particularly relates to a combined type multidimensional vibration damping device with a damping amplification function, which is mainly applied to controlling the vibration response of a long-span structure and a high-rise structure and reducing the damage of vibration to a building or a structure.
Technical Field
Due to the structural characteristics of the large span structure and the high-rise structure, the large span structure and the high-rise structure generally have higher flexibility, and the natural vibration frequency of the large span structure and the high-rise structure is often close to the movement frequency of earthquakes, strong winds and common live loads, so that the large span structure and the high-rise structure often have vibration which affects the safety and the comfort of the structure in the service process. Large-span structures and high-rise structures are favored because of their unique artistry, excellent visual effects and good economic value, and their number and building scale are also getting larger and larger. How to control the vibration response of a large-span structure and a high-rise structure under the action of load and improve the safety and the comfort of the large-span structure and the high-rise structure become one of the main problems of the structural forms.
Vibration dampers are the main tools for controlling structural vibrations, and the current mainstream vibration dampers include tuned mass dampers, tuned liquid dampers, suspended mass pendulums, and the like. Most of the mainstream damping shock absorption devices are passively damped, the structure is relatively simple, and the device has good reliability and durability, but the shock absorption effect of the shock absorption devices is poor, the energy consumption mode is single, and the situations of insufficient shock absorption and energy consumption capability can occur when the structure vibrates violently; an active vibration damping device developed on the basis of passive vibration damping generally needs external energy input and an additional structure dynamic monitoring system, and is complex in structure and high in cost.
Disclosure of Invention
Based on the current research situation, the invention aims to provide a composite multidimensional vibration damping device with a damping amplification function, and aims to reduce the vibration response of large-span space structures such as high-rise structures, large-span reticulated shells and bridges in all directions under the action of wind load and earthquake so as to achieve the purposes of energy consumption and vibration damping; meanwhile, part of energy of structural vibration is collected and input into the energy consumption and damping adjusting system, and the purposes of automatic adjustment and energy self-sufficiency of the vibration damping device are achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a compound multidimensional vibration damper with damping and amplifying functions comprises an external cylinder, wherein a central mass body is arranged in the external cylinder, and the top and the bottom of the central mass body are respectively contacted with the top and the bottom of the external cylinder through an electromagnetic rotary energy consumption vibration damping mechanism; the side surface of the central mass body is contacted with the side surface of the outer cylinder body through the piston type damper; the central mass body consists of a cylindrical metal body and an upper cavity, a middle cavity and a lower cavity inside the cylindrical metal body; the upper cavity and the lower cavity are filled with magnetorheological fluid and are connected with a damping cavity of the piston type damper through rubber conduits; the middle cavity is provided with an energy-consuming ball, the surface of the energy-consuming ball is attached with a slightly viscous rubber layer, and the inner wall of the middle cavity is provided with piezoelectric ceramics; and the piezoelectric ceramic is connected with the piston type damper and an electrified coil of the electromagnetic rotary energy dissipation and vibration reduction mechanism.
The further technical scheme is as follows: the piston type damper consists of a metal cylinder body, a piston rod, a horizontal spring, a rubber conduit, an electrified coil and a fixed caster; one end of the piston rod is welded with the cylindrical metal body, and the other end of the piston rod extends into the metal cylinder body and is connected with the connecting piston; the horizontal spring is connected with the piston and the inner bottom of the metal cylinder body; the rubber guide pipe is used for communicating the upper cavity or the lower cavity of the central mass body with a closed damping cavity formed by the metal cylinder body and the piston; a damping net is arranged in the rubber conduit, and an electrified coil is wound outside the rubber conduit; the fixed caster wheel is connected with the outer bottom surface of the metal cylinder body, is directly contacted with the vibration absorption layer and can vertically slide along the vibration absorption layer.
The further technical scheme is as follows: the vibration absorption layer is composed of soft rubber and a thin steel plate; the rubber layer is attached to the inner wall of the outer cylinder body, and the thin steel plate is attached to the surface of the rubber layer.
The further technical scheme is as follows: the electromagnetic rotary energy consumption vibration reduction mechanism consists of a displacement conversion device and an electromagnetic energy consumption device.
The further technical scheme is as follows: the displacement conversion device consists of a threaded lead screw, a ball metal cylinder body, a vertical spring and a mechanical turntable; one end of the threaded lead screw is fixed with the central mass body, and the other end of the threaded lead screw extends into the ball metal cylinder body to be connected with the vertical spring; one end of the vertical spring is connected with the threaded lead screw, and the other end of the vertical spring is connected with the mechanical turntable; the mechanical turntable is fixed at the bottom of the ball metal cylinder body and can not rotate along with the ball metal cylinder body.
The further technical scheme is as follows: the metal balls are arranged in the ball metal cylinder body and are arranged in a thread shape, and the threaded screw rod can move up and down to drive the ball metal cylinder body to rotate.
The further technical scheme is as follows: the electromagnetic energy dissipation device consists of an electrified coil, a silicon iron column, an energy dissipation universal ball and a support plate; the support plate is welded with the ball metal cylinder; the ferrosilicon column is connected between the support plate and the energy-consuming universal ball, and the electrified coil is wound on the ferrosilicon column; the energy-consuming universal balls are annularly arranged and directly contact with the friction layer; the friction layer is attached to the inner side of the cylinder cover plate.
The further technical scheme is as follows: the vertical spring and the horizontal spring are both made of shape memory alloy.
The further technical scheme is as follows: the inside of the energy-consuming universal ball is provided with a resin-based friction material.
The further technical scheme is as follows: the outer friction layer is a slightly viscous rubber layer.
The working principle of the invention is as follows: under the action of an earthquake, the main body structure generates vertical vibration, and the inertial central mass body drives the piston type damper to generate vertical displacement along the vibration absorption layer; because of the displacement conversion device, the vertical displacement of the central mass body is converted into the rapid rotation movement of the ball metal cylinder body, thereby amplifying the damping force of the vibration damping device and improving the vertical vibration damping efficiency; meanwhile, the vertical spring connecting the support plate and the metal ball rigid body is stretched or compressed to deform, and the energy-consuming ball inside the middle cavity is collided and rubbed, so that the vertical vibration-damping capacity of the vibration-damping device is further improved, and the aim of multiple vibration damping is fulfilled; the energy-consuming universal ball is driven by the ball metal cylinder body to do circular motion, the ball of the universal ball and the resin-based friction resistance material rub to consume energy, and meanwhile, the viscous force and the energy consumption of the micro-viscous rubber layer are overcome; the electromagnet consisting of the silicon iron column and the electrified coil can adjust the pressure between the universal ball and the resin-based friction layer, and indirectly influences the damping force and the energy consumption efficiency of the electromagnetic rotating energy consumption device.
Under the action of earthquake or wind load, the main body structure vibrates horizontally, and the inertia central mass body drives the ball metal cylinder body to generate horizontal displacement; the piston rod moves horizontally in the metal cylinder body to extrude magnetorheological fluid in the metal cylinder body, and the magnetorheological fluid flows rapidly in the rubber guide pipe due to the small cross section of the rubber guide pipe and the plurality of damping nets arranged in the rubber guide pipe, so that the horizontal damping force of the vibration damper is increased; according to the vibration reduction requirement, the electrified coil is connected with a power supply, and the instantaneous rheological property of the magnetorheological fluid under the action of a magnetic field further improves the horizontal vibration reduction capability of the vibration reduction device; the energy-consuming universal ball moves along with the central mass body, and the energy-consuming mode of the energy-consuming universal ball is the same as that of vertical vibration.
Piezoelectric ceramics are arranged in the middle cavity, and the energy dissipation ball extrudes the piezoelectric ceramics in the collision and friction processes to generate electric energy which is connected with the piston type damper and the electrified coil of the electromagnetic energy dissipation mechanism, so that the purposes of energy recovery and energy self-sufficiency are realized; after the main structure vibrates, the self-resetting capability of the vertical spring and the horizontal spring is utilized to restore the damping device to the original state, and the damping capability in the next working process is ensured.
The invention has the beneficial effects that:
(1) according to the invention, the vertical vibration of the main body structure is converted into the rapid rotation motion of the ball metal cylinder body through the threaded screw, so that the linkage efficiency of the transmission machinery is improved, the energy-consuming universal ball rapidly moves on the micro-viscous rubber layer, and the purposes of amplifying the damping force and improving the vibration damping capacity are realized.
(2) The invention utilizes the inertia effect when the liquid flows from the metal cylinder body with large cross section to the slender rubber conduit, and the liquid flows in the slender rubber conduit rapidly, thereby realizing the purpose of amplifying the damping force of the liquid flow; a plurality of damping nets are arranged in the rubber guide pipe, so that the horizontal vibration reduction capability is further improved; the metal cylinder body, the rubber conduit and the upper (lower) cavity form a communicating vessel, so that the idle stroke phenomenon is avoided when liquid flows.
(3) The invention adopts a semi-active technology control theory, and timely adjusts the flow characteristic of the magnetorheological fluid according to the vibration control requirement, so that the vibration damper has good vibration damping effect in a wider frequency domain range; meanwhile, the electrified coil is electrified, so that the interaction between the magnets is improved, and the purposes of adjusting the damping force and improving the energy consumption capability are achieved.
(4) The vibration energy of the main body structure is collected and converted into electric energy by utilizing the piezoelectric ceramics, and the electrified coil is connected to adjust the damping force of the vibration damper in real time, so that the purposes of energy recovery and energy self-sufficiency are realized, and the energy utilization rate and the vibration damping effect of the vibration damper are improved.
(5) The energy-consuming ball, the vertical spring and the horizontal spring are arranged in the limited space, so that the energy-consuming capacity is further improved, and the aim of multiple vibration reduction is fulfilled; the self-resetting capability of the vibration damper is realized by utilizing the super-elastic characteristic of the shape memory alloy; the vibration damper can effectively improve the anti-seismic and wind-resistant performance of the structure and can generate better social benefit and economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a view showing the structure of a composite multi-dimensional vibration damping device with damping and amplifying functions;
FIG. 2 is a sectional view taken along line A-A of a composite multi-dimensional vibration damping device with an enlarged damping function;
FIG. 3 is a detail view of a piston type damper of a combined type multi-dimensional vibration damping device with damping amplification function;
FIG. 4 is a detail view of the construction of the rotating dissipative vibration damping device;
FIG. 5 is a detail view of the construction of an energy dissipating universal ball;
in the figure: 1, a cylinder cover plate, 2, an annular steel pipe, 3, a connecting upright post, 4, a cylinder side edge plate, 5, a micro-viscous rubber layer, 6, a vibration absorbing layer, 7, an energy-consuming universal ball, 8 silicon iron columns, 9 electromagnetic coils, 10 support plates, 11 mechanical turntables, 12 vertical springs, 13 ball metal cylinders, 14 metal balls, 15 threaded lead screws, 16 fixed casters, 17 metal cylinders, 18 pistons, 19 piston rods, 20 horizontal springs, 21 rubber guide pipes, 22 protective resistors, 23 electrified coils, 24 damping nets, 25 upper cavities, 26 middle cavities, 27 lower cavities, 28 energy-consuming balls, 29 side wall piezoelectric ceramics, 30 partition piezoelectric ceramics and 31 cylindrical metal bodies; 32 piston dampers, 33 resin based friction material; 34 ball transfer balls; 35 universal ball housing.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
The invention realizes the multidimensional vibration damping control of the structure, realizes the diversity of energy consumption ways by utilizing the prior art, and simultaneously endows the vibration damping device with the adjustability of damping force; and part of energy of vibration is reversely input into the vibration reduction and energy consumption system through energy conversion, so that the automatic adjustment of the vibration reduction device is realized.
An exemplary embodiment of the present invention is shown in FIG. 1; an embodiment of a composite multidimensional vibration damping device with damping amplification function comprises an external cylinder, wherein the external cylinder comprises an upper annular steel pipe and a lower annular steel pipe 2 which are respectively covered with a circular cover plate 1 and welded with the upper annular steel pipe and the lower annular steel pipe; the side coaming 4 is wound into a cylinder shape, the upper side and the lower side of the side coaming 4 are connected with the annular steel pipe 2 through a plurality of connecting upright posts 3, and a cylinder body with the whole cylindrical appearance is formed; in this embodiment, the upper and lower sides of the side coaming 4 are respectively connected with the annular steel pipe 2 through 6 connecting columns 3, and it is needless to understand that the number of the connecting columns 3 is set according to actual needs. The inner sides of the upper cover plate and the lower cover plate 1 are pasted with a micro-viscous rubber layer 5, the viscosity of the rubber layer 5 attached to the lower cover plate is lower than that of the rubber layer 5 attached to the upper cover plate, and the micro-viscous rubber layer 5 is used for providing certain viscous resistance for the moving energy-consuming universal ball 7 and enhancing the energy-consuming capacity; the inner side of the side coaming 4 is attached with a vibration absorption layer 6 which is composed of a layer of soft rubber and a thin steel plate attached to the outer side of the rubber, and has certain vibration absorption and vibration reduction effects.
The vertical vibration damping and energy dissipating system in the embodiment is composed of a central mass body (sharing the same mass body with the horizontal vibration damping system), an electromagnetic rotation energy dissipating mechanism and a micro-viscous rubber layer.
The central mass body comprises a cylindrical metal body 31, a cavity is reserved in the central mass body, and the central mass body is divided into an upper cavity 25, a hollow cavity 26 and a lower cavity 27 through partition plates; the upper cavity 26 and the lower cavity 27 are filled with magnetorheological fluid and are communicated with the damping cavity through the horizontally arranged rubber conduit 21; an energy-consuming ball 28 is placed in the hollow cavity 26, a rubber layer is attached to the surface of the ball, piezoelectric ceramics 29 are arranged on the side wall of the hollow cavity 26, and the two poles of the piezoelectric ceramics are directly connected with an electrified coil 23 of the piston type damper; the upper and lower surfaces of the hollow cavity are also fully distributed with piezoelectric ceramics 30, and two poles of the hollow cavity are directly connected with the electromagnetic coil 9;
the upper part and the lower part of the central mass body are respectively connected with an electromagnetic rotation energy consumption mechanism, and the electromagnetic rotation energy consumption mechanism above is taken as an example for explanation; the electromagnetic rotation energy dissipation mechanism consists of an energy dissipation universal ball 7, a silicon iron column 8, a support plate 10, a mechanical rotary table 11, a spring 12, a ball metal cylinder body 13, a metal ball 14 and a threaded screw rod 15; one end of the threaded screw is connected with the cylindrical metal body 31, the other end of the threaded screw extends into the ball metal cylinder body 13, the end of the threaded screw is connected with the mechanical rotating disc 11 through the spring 12, the mechanical rotating disc 11 is located on the inner wall of the ball metal cylinder body 13, the supporting plate 10 is fixed outside the ball metal cylinder body 13, a circle of silicon-iron column 8 is fixed on the supporting plate 10, and the end part of the silicon-iron column 8 is provided with the energy-consuming universal ball 7.
As shown in FIG. 5, the energy dissipating ball 7 is filled with a resin-based friction material 33, which has a stable friction coefficient and provides a friction force depending on the pressure between the ball 34 and the energy dissipating ball.
Furthermore, an electromagnetic coil 9 is wound on the ferrosilicon column 8 to form an electromagnet, a protective resistor is connected in series on the electromagnetic coil 9, two ends of the ferrosilicon column 8 are respectively welded with the energy-consuming universal balls 7 and the supporting plate 10, and six groups of energy-consuming universal balls are welded on each side of the supporting plate 10 and are arranged in a ring shape.
The ball cylinder 13 is welded to the support plate 10.
Furthermore, the ball 14 arranged in a thread shape is arranged in the ball metal cylinder 13, and when the threaded screw 15 moves up and down in the ball metal cylinder 13, the metal cylinder 13 is driven to rotate, so that the energy-consuming universal ball makes a circular motion. The mechanical rotary table 11 is connected with a spring and a ball metal cylinder 13, so that the spring does not rotate along with the metal cylinder; the upper and lower sets of electromagnetic rotary vibration reduction energy dissipation mechanisms in the vertical direction have the same structure.
When the structure vibrates vertically, the central mass body is excited to compress the vertical spring 12 to generate vertical displacement, the threaded screw rod 15 is pushed to move up and down, and the ball metal cylinder 13 is caused to rotate rapidly through the displacement conversion device, so that the vibration reduction efficiency and the damping force are effectively improved; the energy-consuming universal ball 7 does circular motion along with the ball metal cylinder body 13 and rubs with the resin-based friction resistance layer 33 to consume energy, and meanwhile, the energy-consuming universal ball 7 overcomes the cohesive force and energy consumption of the slightly-viscous rubber layer; the electromagnet consisting of the silicon iron column 8 and the electrified coil 9 can adjust the magnetic force according to the vibration condition, change the pressure between the universal ball 34 and the resin-based friction layer 33, and indirectly adjust the damping force and the energy consumption efficiency of the rotary energy consumption device; meanwhile, the rotation directions of the two sets of rotation energy consumption devices are always opposite, so that the whole vibration damper is ensured not to generate torsion.
The lateral surface of the central mass body is connected with a horizontal vibration and energy dissipation system, and the horizontal vibration and energy dissipation system consists of the central mass body, a piston type damper and a vibration absorption layer; the piston type damper consists of a fixed caster 16, a metal cylinder 17, a piston 18, a piston rod 19, a horizontal spring 20, a rubber guide tube 21, a protective resistor 22, an electrified coil 23 and a damping net 24; one end of the piston rod 19 is welded with the cylindrical metal body 31, and the other end extends into the metal cylinder body 17 to be connected with the connecting piston 18; the piston 18 can slide inside the metal cylinder 17 when the central mass vibrates horizontally;
the horizontal spring 20 is connected with the piston 18 and the inner bottom of the metal cylinder body 17, provides damping counter force and endows the piston type damper with self-resetting capability; the horizontal spring 20 is connected with the piston 18 and the inner bottom of the metal cylinder body 17, provides damping reaction force and endows the piston type damper with self-resetting capability; the fixed caster wheels 16 are connected on the metal cylinder body 17, directly contact the vibration absorption layer 6 and can slide up and down along the vibration absorption layer 6; the piston 18 can slide inside the metal cylinder 17 when the central mass vibrates horizontally; the rubber conduit 21 is connected with the damping cavity and the upper cavity 25 (or the lower cavity 27), the damping net 24 is arranged in the conduit 21, the electrified coil 23 is wound outside, and the protective resistor 22 is attached to the coil 23 and can prevent the current from being overlarge; magnetorheological fluid is filled in the damping cavity and the rubber conduit; the arrangement mode of the horizontal vibration reduction energy consumption systems is shown in fig. 2, eight horizontal vibration reduction energy consumption systems are arranged in the embodiment in an annular arrangement mode to form a horizontal vibration reduction layer, the vibration reduction layer is divided into two layers, an upper layer damper damping cavity is connected with the upper cavity 25, and a lower layer damper damping cavity is connected with the lower cavity 27.
When the structure vibrates horizontally, the central mass body drives the vertical rotary vibration-damping energy-consuming mechanisms to move together, the piston rod extrudes the piston to horizontally slide along the damping cavity, the spring and the magnetorheological fluid are compressed, the magnetorheological fluid flows through the rubber guide pipe to bear certain resistance, the current of the outer coil of the rubber guide pipe can be adjusted according to the vibration condition, the flowability of the magnetorheological fluid is changed, and different vibration-damping forces are provided; the energy-consuming universal ball moves along with the central mass body, and the energy-consuming mode of the energy-consuming universal ball is the same as that of vertical vibration.
The energy dissipation ball in the central mass body can play a role in vibration reduction and energy dissipation when the structure vibrates, and meanwhile, the piezoelectric ceramic is extruded to generate electric energy which is input into the electrified coil to achieve the purposes of adjusting damping force and energy dissipation efficiency.
According to the invention, the vertical vibration of the main body structure is converted into the rapid rotation motion of the ball metal cylinder body through the threaded screw, so that the linkage efficiency of the transmission machinery is improved, the energy-consuming universal ball rapidly moves on the micro-viscous rubber layer, and the purposes of amplifying the damping force and improving the vibration damping capacity are realized. The multi-dimensional vibration reduction control of the structure is realized through the annular arrangement of the piston type dampers and the introduction of the vertical electromagnetic vibration reduction and energy consumption mechanism, and the vibration reduction and energy consumption effects of the vibration reduction device are enhanced; meanwhile, the liquid flows rapidly in the long and thin rubber guide pipe by utilizing the inertia effect when the liquid flows from the metal cylinder body with the large cross section to the long and thin rubber guide pipe, so that the aim of amplifying the damping force of the liquid flow is fulfilled; a plurality of damping nets are arranged in the rubber guide pipe, so that the horizontal vibration reduction capability is further improved, and the rubber guide pipe has reliable vibration reduction and energy consumption capability.
Claims (8)
1. A composite multidimensional vibration damping device with damping and amplifying functions is characterized by comprising an outer barrel, wherein a central mass body is arranged in the outer barrel, and the top and the bottom of the central mass body are respectively contacted with the top and the bottom of the outer barrel through an electromagnetic rotation energy dissipation vibration damping mechanism; the side surface of the central mass body is contacted with the side surface of the outer cylinder body through the piston type damper; the central mass body consists of a cylindrical metal body and an upper cavity, a middle cavity and a lower cavity inside the cylindrical metal body; the upper cavity and the lower cavity are filled with magnetorheological fluid and connected with a damping cavity of the piston type damper through rubber conduits; the middle cavity is provided with an energy dissipation ball, the surface of the energy dissipation ball is attached with a micro-viscous rubber layer, the inner wall of the middle cavity is provided with piezoelectric ceramics, and the piezoelectric ceramics are connected with the piston type damper and an electrified coil of the electromagnetic rotary energy dissipation vibration reduction mechanism.
2. The compound multidimensional vibration damper with damping and amplifying functions as recited in claim 1, wherein the piston type damper is composed of a metal cylinder, a piston rod, a horizontal spring, a rubber conduit, an electrified coil and a fixed caster; one end of the piston rod is welded with the cylindrical metal body, and the other end of the piston rod extends into the metal cylinder body to be connected with the piston; the horizontal spring is connected with the piston and the inner bottom of the metal cylinder body; the rubber guide pipe is used for communicating the upper cavity or the lower cavity of the central mass body with a closed damping cavity formed by the metal cylinder body and the piston; the fixed caster wheel is connected with the outer bottom surface of the metal cylinder body, is directly contacted with the vibration absorption layer and can vertically slide along the vibration absorption layer;
wherein, the rubber conduit is internally provided with a damping net, and the outside of the rubber conduit is wound with an electrified coil;
the vibration absorption layer is composed of soft rubber and a thin steel plate; the rubber layer is attached to the side wall of the outer cylinder, and the thin steel plate is attached to the surface of the rubber layer.
3. The composite multidimensional vibration damping device with damping and amplifying functions as recited in claim 2, wherein said horizontal spring is made of shape memory alloy.
4. The compound multidimensional vibration damping device with the damping and amplifying function as recited in claim 1, wherein the electromagnetic rotary energy-consuming vibration damping mechanism comprises a displacement conversion device and an electromagnetic energy-consuming device, the displacement conversion device is composed of a threaded screw, a ball metal cylinder, a vertical spring and a mechanical turntable; one end of the threaded screw rod is fixed with the central mass body, and the other end of the threaded screw rod extends into the ball metal cylinder body to be connected with the vertical spring; one end of the vertical spring is connected with the threaded lead screw, and the other end of the vertical spring is connected with the mechanical turntable; the mechanical turntable is fixed at the bottom of the ball metal cylinder body; the electromagnetic energy dissipation device consists of an electrified coil, a silicon iron column, an energy dissipation universal ball and a support plate; the support plate is welded with the ball metal cylinder; a circle of silicon iron column is arranged on the supporting plate, and an electrified coil is wound on the silicon iron column; the end part of the ferrosilicon column is fixed with an energy-consuming universal ball.
5. The composite multidimensional vibration damping device with damping and amplifying functions as recited in claim 4, wherein the metal balls are disposed in the ball metal cylinder, the balls are arranged in a thread, and the threaded screw moves up and down to drive the ball metal cylinder to rotate.
6. The composite multidimensional vibration damping device with the damping and amplifying function as recited in claim 4, wherein said vertical spring is made of shape memory alloy.
7. The composite multidimensional vibration damping device with the damping and amplifying function as recited in claim 4, wherein the dissipating ball is internally provided with a resin-based friction material.
8. The composite multidimensional vibration damping device with the damping and amplifying function as recited in claim 1, further comprising an outer friction layer, said outer friction layer being a slightly viscous rubber layer attached to the top and bottom inner walls of the outer cylinder.
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|---|---|---|---|---|
| CN114566931B (en) * | 2022-03-07 | 2022-11-01 | 山东大学 | Self-adaptive combined type broadband anti-galloping energy consumption device |
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| CN115163723B (en) * | 2022-08-11 | 2023-06-09 | 甘肃盛宏建筑工程有限责任公司 | Magneto-rheological variable damping vibration attenuation energy consumption device |
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| CN115663735B (en) * | 2022-12-22 | 2023-03-10 | 中国电建集团山东电力建设第一工程有限公司 | Damping amplification type composite energy consumption damper |
| CN117684675B (en) * | 2023-11-09 | 2024-05-14 | 山东省工业技术研究院 | Self-energy-supply wide-frequency-domain multidimensional vibration damper based on quasi-zero rigidity |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012184816A (en) * | 2011-03-07 | 2012-09-27 | Kozo Keikaku Engineering Inc | Damping device and vibration control device of structure |
| CN106246797A (en) * | 2016-08-25 | 2016-12-21 | 奇瑞商用车（安徽）有限公司 | A kind of magnetic rheological liquid damper |
| JP2017110758A (en) * | 2015-12-17 | 2017-06-22 | 三和テッキ株式会社 | Variable inertia mass type vibration control device |
| CN108730410A (en) * | 2018-07-02 | 2018-11-02 | 浙江大学 | Adjustable inertia mass damper |
| CN111042370A (en) * | 2019-12-27 | 2020-04-21 | 山东大学 | Semi-active negative stiffness multidimensional vibration damper |
| CN111236460A (en) * | 2020-01-17 | 2020-06-05 | 山东大学 | Multidimensional self-powered magnetorheological vibration damper |
| CN112128285A (en) * | 2020-09-14 | 2020-12-25 | 湖南大学 | Vertical tuned mass magnetic screw type inertial capacitance eddy current damper |
| CN112555325A (en) * | 2020-10-28 | 2021-03-26 | 中国船舶重工集团公司第七0九研究所 | Multidirectional damping controllable magneto-rheological shock absorber |
| CN112923003A (en) * | 2021-01-22 | 2021-06-08 | 长安大学 | Magnetorheological memory alloy composite energy-consumption shock absorption and isolation device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2574453A1 (en) * | 2007-01-15 | 2008-07-15 | David Kadlec | Magneto-rheological camera motion, support, and positioning device |
| CN109505912A (en) * | 2018-12-03 | 2019-03-22 | 株洲时代新材料科技股份有限公司 | Half active Frequency Adjustable dynamic vibration absorber and vibration absorption method based on magnetorheological fluid characteristic |
| CN111981075A (en) * | 2020-08-21 | 2020-11-24 | 南京航空航天大学 | Quasi-zero rigidity vibration isolation system with bending moment resisting effect |
-
2021
- 2021-09-15 CN CN202111082177.7A patent/CN113847384B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012184816A (en) * | 2011-03-07 | 2012-09-27 | Kozo Keikaku Engineering Inc | Damping device and vibration control device of structure |
| JP2017110758A (en) * | 2015-12-17 | 2017-06-22 | 三和テッキ株式会社 | Variable inertia mass type vibration control device |
| CN106246797A (en) * | 2016-08-25 | 2016-12-21 | 奇瑞商用车（安徽）有限公司 | A kind of magnetic rheological liquid damper |
| CN108730410A (en) * | 2018-07-02 | 2018-11-02 | 浙江大学 | Adjustable inertia mass damper |
| CN111042370A (en) * | 2019-12-27 | 2020-04-21 | 山东大学 | Semi-active negative stiffness multidimensional vibration damper |
| CN111236460A (en) * | 2020-01-17 | 2020-06-05 | 山东大学 | Multidimensional self-powered magnetorheological vibration damper |
| CN112128285A (en) * | 2020-09-14 | 2020-12-25 | 湖南大学 | Vertical tuned mass magnetic screw type inertial capacitance eddy current damper |
| CN112555325A (en) * | 2020-10-28 | 2021-03-26 | 中国船舶重工集团公司第七0九研究所 | Multidirectional damping controllable magneto-rheological shock absorber |
| CN112923003A (en) * | 2021-01-22 | 2021-06-08 | 长安大学 | Magnetorheological memory alloy composite energy-consumption shock absorption and isolation device |
Non-Patent Citations (1)
| Title |
|---|
| 多自由度减振磁流变阻尼器的设计研究;赵晓文等;《地震工程与工程振动》;20111015(第05期);第180-185页 * |
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