CN115163723B - Magneto-rheological variable damping vibration attenuation energy consumption device - Google Patents
Magneto-rheological variable damping vibration attenuation energy consumption device Download PDFInfo
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- CN115163723B CN115163723B CN202210962136.5A CN202210962136A CN115163723B CN 115163723 B CN115163723 B CN 115163723B CN 202210962136 A CN202210962136 A CN 202210962136A CN 115163723 B CN115163723 B CN 115163723B
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a magneto-rheological variable damping vibration attenuation energy consumption device, which comprises a connector, a rotating device and a damping adjusting device, wherein the device can convert the reciprocating displacement of vibration into the relative rotation of the rotating device, the damping force is multiplied or reduced by adjusting the pitch of a ball slideway, the damping adjusting range is enlarged, the rigidity of a magneto-rheological spring is changed according to the controllable rheological property of magneto-rheological liquid, the real-time adjustment of the damping force when the damping adjuster works is realized, the vibration response of a building structure under the action of earthquake or wind load can be effectively restrained, the self-resetting adjustment after the vibration is finished is realized, and the damage to the building structure caused by permanent displacement generated in the vibration process are avoided.
Description
Technical Field
The utility model relates to the field of vibration control in civil engineering, in particular to a magneto-rheological variable damping vibration attenuation and energy consumption device which is mainly applied to vibration attenuation control of high-rise buildings and high-rise structures.
Background
In recent years, the development of building structural forms gradually tends to diversify and complicate, and the sensitivity of high-rise buildings to earthquake or wind load is remarkably improved. Environmental vibrations tend to induce greater lateral vibrations and deformations in the body structure, even beyond the allowable comfort requirements. In order to reduce the vibrational response of structures, there is increasing interest in installing reasonably efficient damping systems in high rise and towering structures.
At present, the magnetorheological damper is widely applied to engineering due to the reliability of passive control and the adaptability of active control. The application number is: the Chinese patent of 201810866592.3 discloses a novel magnetorheological damping adjusting device, which is characterized in that a piezoelectric power generation unit is used for supplying power to an exciting coil, and a pressure sensor and a controller are used for controlling the current change in the exciting coil, so that the flowing state of magnetorheological fluid can be quickly changed along with the change of the magnetic field in the exciting coil, and the damping force provided by the damper can be adjusted in real time, thereby achieving the purpose of intelligent vibration reduction.
Although the above-mentioned chinese patent utility model can change the flow characteristics of the magnetorheological fluid according to the excitation load form and the response state of the structure to adjust the damping and stiffness of the damper in real time. But as a semi-active control device, the semi-active control device requires energy input in the working process, and the power generation unit and the power storage unit are expensive in cost, complex in manufacture and not suitable for large-scale engineering application.
After vibration occurs, permanent displacement damage can be generated in the structure, the existing magnetorheological damper mostly cannot realize an automatic reset function, and the common spring self-reset damper also has damping attenuation under a long-term working state. Novel self-healing damping device, for example, the application number is: 202021409509.9A Chinese patent application, compound self-resetting solid-liquid hybrid damper, uses memory alloy as its self-resetting device, and the memory alloy is easier to break under fatigue load compared with common steel, so that the service life of the damper is shorter and the use cost is higher.
Disclosure of Invention
The utility model aims to provide a magneto-rheological variable damping vibration attenuation energy consumption device, which aims to reduce the horizontal vibration response of a high-rise building or a towering structure under the wind load and earthquake action, and achieve the effects of energy consumption and vibration attenuation, and adopts the following technical scheme:
the utility model provides a magneto-rheological variable damping vibration attenuation energy consumption device, which comprises a connector, a rotation device and a damping adjustment device, wherein the rotation device consists of an inner rotation drum and an outer rotation drum, the inner rotation drum and the outer rotation drum are inserted together and respectively comprise an inner drum and an outer drum which are connected together through an upper cover, the inner sides of the outer drum and the inner wall of the outer rotation drum are respectively provided with the same ball slide way, balls are arranged in the ball slide ways, the inner drum of the inner rotation drum and the inner drum of the outer rotation drum realize relative rotation through the ball slide ways and the balls, and the upper cover of the inner rotation drum is connected with the upper cover of the outer rotation drum through the damping adjustment device which is arranged in a bidirectional way; the top and bottom of the swivel are each connected to a connector by a ball disc.
As a further technical scheme, an annular space is formed between the outer cylinder of the inner rotary cylinder and the inner cylinder of the outer rotary cylinder, a circle of first damping adjusting device is arranged in the annular space, and the first damping adjusting device is obliquely arranged.
As a further technical scheme, a circle of second damping adjusting device is also arranged in the inner cylinder of the inner cylinder, the second damping adjusting device is obliquely arranged, and the inclination angle of the second damping adjusting device is opposite to that of the first damping adjusting device.
As a further technical scheme, the damping adjusting device comprises a limiting device, a cylindrical shell, a magnet, a magneto-rheological hollow spring and a limiting spring; the two ends of the cylindrical shell are respectively provided with a limiting device, the limiting devices extend into the cylindrical shell, the inside of the cylindrical shell is divided into three cavities along the length direction of the cylindrical shell, a magnetorheological hollow spring is arranged in the middle cavity, magnetorheological fluid is arranged in the magnetorheological hollow spring, limiting springs are arranged in the cavities on two sides, the limiting springs are sleeved on the limiting devices, one ends of the limiting springs are connected with a magnet positioned at the end part of the cylindrical shell, and the other ends of the limiting springs are connected with the end part of the limiting devices.
As a further technical scheme, the cylindrical shell comprises two parts, the two parts of shells are connected through threads, and the damping force of the damping energy dissipation device can be adjusted by adjusting the thread pitch.
As a further technical scheme, the connector can be used for connecting or welding the connector base with the perforating bolt of the building structure according to the type of the building structure.
As a further technical scheme, the rotating device is made of stainless steel insulating materials.
As a further technical proposal, the balls between the ball slides are arranged symmetrically at equal intervals,
as a further technical scheme, the base of the connector is fixedly arranged at the vibration sensitive position of the main body structure.
As a further technical scheme, the inclination angle of the damping adjusting device in the rotating device can be adjusted.
The beneficial effects of the utility model are as follows:
the magnetorheological damping variable vibration damping energy consumption device provided by the utility model can adjust the damping force of the device according to actual engineering requirements and arrangement positions, and convert the reciprocating displacement in the vibration process of a building into the relative rotation movement between the inner rotary cylinder and the outer rotary cylinder, so that the device has higher vibration damping efficiency compared with the traditional transmission mechanical structure.
The damping device is based on the instantaneous rheological property of magnetorheological fluid, can provide an instantaneously changed damping force when the damping and energy-consuming device works, can effectively improve the sensitivity of the damping and energy-consuming device, effectively improve the reaction hysteresis of the traditional spring damping device, adjust the effective stroke of the damping and energy-consuming device by adjusting the initial positions of the inner rotary cylinder and the outer rotary cylinder, and adjust the tension stroke of the damping and energy-consuming device by rotating the lengths of the outer cylinder, the inner cylinder and the limiting spring of the damping and adjusting device.
According to the utility model, the damping adjusting device is obliquely arranged in a double-layer manner, so that the internal stress and the external stress are opposite, the damping attenuation of the spring can be effectively slowed down, and the self-resetting adjustment can be realized; the building structure is prevented from generating larger permanent displacement damage after vibration, energy input into the building structure can be well dissipated, the structure is simple, the maintenance is convenient, the earthquake resistance and wind resistance of the building structure can be effectively improved, and good social benefit and economic benefit can be generated.
Drawings
In order to more clearly illustrate the embodiments of the present utility model 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 schematic diagram of a magneto-rheological variable damping vibration attenuation energy dissipation device according to the present utility model;
FIG. 2 is a cross-sectional view of a magnetorheological damping-variable vibration attenuation energy dissipation device A-A according to the present utility model;
FIG. 3 is a schematic diagram of an external rotation device of the magneto-rheological variable damping vibration attenuation energy dissipation device according to the present utility model;
FIG. 4 is a schematic diagram of a rotational device in a magnetorheological variable damping vibration attenuation energy dissipation device according to the present utility model;
FIG. 5 is a schematic view of the upper cover of the inner rotary drum of the magnetorheological damping-variable vibration attenuation energy dissipation device according to the present utility model;
FIG. 6 is a schematic diagram of the upper cover of the outer rotary drum of the magnetorheological damping-variable vibration attenuation energy dissipation device;
FIG. 7 is an exploded view of the magnetorheological damping vibration attenuation energy dissipation device between the outer cylinder of the outer cylinder and the upper cover of the outer cylinder;
FIG. 8 is an exploded view of the magnetorheological damping vibration attenuation energy dissipation device according to the present utility model between the outer cylinder of the outer cylinder and the upper cover of the outer cylinder;
FIG. 9 is a top view of a damper adjusting device of the magnetorheological variable damping vibration attenuation energy dissipation device according to the present utility model;
fig. 10 is a schematic view of a connector ball disc of a magneto-rheological variable damping vibration attenuation energy dissipation device according to the present utility model.
In the figure: the device comprises a connector base, a 2 pin shaft, a 3 connector, a 4 ball disc, a 4-1 ball disc bolt hole, 5 balls, a 6 rotating device, a 6-1 outer rotating drum outer drum, a 6-2 inner rotating drum outer drum, a 6-3 connecting circular ring, a 6-4 outer rotating drum inner drum, a 6-5 inner rotating drum inner drum, a 6-6 ball slideway, a 6-7 bolt hole, a 6-8 rotating device ball disc, a 6-9 inner rotating drum upper cover, a 6-10 outer rotating drum upper cover, a 7 damping adjusting device, a 7-1 limiting device, a 7-2 first drum, a 7-3 second drum, a 7-4 magnet, a 7-5 magneto-rheological hollow spring, a 7-6 magneto-rheological fluid and a 7-7 limiting spring.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. 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 example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
For convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As introduced by the background technology, the magnetorheological damper which is generally researched in the prior art belongs to a piston pore flow mode, and the magnetorheological damper is high in needed magnetorheological fluid consumption, low in utilization rate and easy to generate precipitation blocking. Meanwhile, the adjustable range of the damping force is narrow, and when the excitation of the external environment is small, the damper cannot provide proper damping force. And the inside of structure probably produces permanent displacement damage after vibration takes place, and current attenuator can't realize automatic re-setting function mostly, and the damping attenuation's under the long-term operating condition still exists for the spring damper that commonly uses.
Based on the defects, under the condition of not increasing the external size and energy consumption of the damper, in order to realize the adjustable damping of the damper and slow down the damping attenuation of the spring in a long-term working state, the damping device is self-reset after vibration occurs, the utilization rate of magnetorheological fluid is improved, the effective dissipation of the vibration energy of an input structure is realized, the structure of the damper is further simplified, the manufacturing cost of the damper is reduced, the advantages of a common spring damper and a magnetorheological damper are necessarily combined, and the damping energy consumption device with simple structure and ideal working effect is provided.
The utility model provides a magneto-rheological variable damping vibration attenuation energy consumption device, wherein one end of a connecting device is provided with a ball disc, and the other end of the connecting device is provided with a variable-direction connecting disc which is respectively connected with a rotating device and a building; the rotating device consists of an inner rotating cylinder, an outer rotating cylinder and balls, wherein ball slide ways are arranged on the inner cylinder wall of the inner rotating cylinder, and ball turntables and connecting rings are respectively arranged on the inner cylinder bottoms of the inner rotating cylinder and the outer rotating cylinder; the damping adjusting device is characterized in that magnets are adhered to two ends of the inside of the damping adjusting device, threads are arranged on the outer cylinder of the damping adjusting device, a spring, a magnetorheological spring and a limiting device are arranged in the damping adjusting device, magnetorheological fluid is filled in the magnetorheological spring, and the magnetorheological spring is located between the two limiting devices. The inner rotary drum and the outer rotary drum are cylindrical and are composed of two concentric cylindrical drums, wherein the outer drum bottom of the outer rotary drum is detachable, and the inner drum bottom of the inner rotary drum is detachable; the open pore positions at the two ends of the magnetorheological spring are sealed, so that magnetorheological fluid is prevented from flowing out; the inner rotary cylinder and the outer rotary cylinder are made of stainless steel insulating materials, so that the protection effect on internal devices in different environments is realized; the connector is connected with the inner rotary barrel and the outer rotary barrel through a ball disc and balls, wherein the ball disc at one side of the end part of the connector is detachable; the inner bottom of the inner rotary drum and the outer rotary drum are equidistantly provided with connecting circular rings, and the connecting circular rings of the upper rotary drum and the lower rotary drum are arranged in a staggered manner; the damping adjusting device is connected with the inner rotary cylinder and the outer rotary cylinder through a connecting circular ring; the damping regulator outer cylinder consists of a cylindrical inner cylinder and an outer cylinder with threads and thread grooves; the limiting device consists of limiting springs and a limiter, wherein the limiter is arranged between the two limiting springs; magnets are adhered to two ends of the interior of the damping regulator; lubricating oil is smeared between the balls and the ball slide way and between the balls and the ball disc, so that friction force generated when the inner rotary cylinder and the outer rotary cylinder rotate relatively is reduced as much as possible; the connector is provided with a turning device, and the connector main body and the connecting disc can rotate around a pin shaft.
The present utility model will be described in detail with reference to the accompanying drawings;
the magnetorheological damping vibration attenuation energy consumption device provided by the embodiment comprises three parts of two connectors 3, a rotating device 6 and a damping adjusting device 7, wherein the two connectors 3 are respectively positioned at the top and the bottom of the rotating device 6, the rotating device 6 can generate relative rotation, and the two connectors 3 are fixed.
Further, the two connectors 3 are respectively connected with the base 1 through a pin shaft, the base 1 is connected with the structure, and the base 1 can be connected with the base 1 through bolts or welded according to different materials.
Further, the connector 3 is connected with the rotating device 6 through the ball disc 4, the ball disc 4 is detachable, the ball disc 4 is assembled through the bolt hole 4-1 after the connector 3 stretches into the rotating shaft, and lubricating oil is smeared in the ball disc so as to reduce friction force of the rotating device in the rotating process.
Further, the rotating device 6 comprises an outer rotating cylinder 6-1, an inner rotating cylinder 6-2, a connecting circular ring 6-3, an outer rotating cylinder inner cylinder 6-4, an inner rotating cylinder 6-5, a ball slideway 6-6, a bolt hole 6-7, a rotating device ball disc 6-8, an inner rotating cylinder upper cover 6-9 and an outer rotating cylinder upper cover 6-10;
as shown in fig. 3, the outer rotary drum outer cylinder 6-1, the outer rotary drum inner cylinder 6-4 and the outer rotary drum upper cover 6-10 are combined together to form an outer rotary piece, and a ball slideway 6-6 is arranged on the inner wall of the outer rotary drum inner cylinder 6-4; the ball slide way 6-6 is spiral, and forms a thread shape;
as shown in fig. 4, the inner rotary cylinder 6-2, the inner rotary cylinder 6-5 and the upper cover 6-9 are combined together to form an inner rotary member, the outer wall of the inner rotary cylinder 6-5 is correspondingly provided with a ball slide way 6-6, and the ball slide way 6-6 is spiral to form a thread shape; the ball slide way 6-6 is internally provided with a ball 5, so that the inner rotating piece, the outer rotating piece and the outer rotating piece can relatively rotate through the ball;
during assembly, the outer rotary drum outer cylinder 6-1 is inserted outside the inner rotary drum outer cylinder 6-2, the outer rotary drum inner cylinder 6-4 is inserted outside the inner rotary drum inner cylinder 6-5, and meanwhile, the outer rotary drum upper cover 6-10 is connected with the inner rotary drum upper cover 6-9 through the damping adjusting device 7; the inner walls of the upper cover 6-10 of the outer rotary drum and the upper cover 6-9 of the inner rotary drum are respectively provided with a connecting circular ring 6-3, two ends of the damping adjusting device 7 are connected to the connecting circular rings 6-3 of the two upper covers, two groups of damping adjusting devices 7 are arranged, one group of damping adjusting devices 7 (a first damping adjusting device) is arranged on an inner ring formed by an inner rotary piece and an outer rotary piece, and the other group of damping adjusting devices 7 (a second damping adjusting device) is arranged on an outer ring formed by the inner rotary piece and the outer rotary piece; each group of damping adjustment devices 7 comprises four damping adjustment devices 7, each damping adjustment device 7 of the four damping adjustment devices 7 is obliquely arranged, the inclination angles are the same, but the inclination angles of the two groups of damping adjustment devices 7 are opposite; when the rotary cylinder rotates relatively, one group of damping adjusting devices are pulled, and the other group of damping adjusting devices are pressed, so that the internal stress and the external stress are opposite, the damping attenuation of the spring can be effectively slowed down, and the self-resetting adjustment can be realized; the building structure is prevented from generating larger permanent displacement damage after vibration, energy input into the building structure can be well dissipated, the structure is simple, the maintenance is convenient, the earthquake resistance and wind resistance of the building structure can be effectively improved, and good social benefit and economic benefit can be generated.
Further, as shown in fig. 5 and 6, the center positions of the outer rotary drum upper cover 6-10 and the inner rotary drum upper cover 6-9 are respectively provided with a rotary device ball disc 6-8, the outer rotary drum upper cover 6-10 is connected with the connector 3 through the rotary device ball disc, the inner rotary drum upper cover 6-9 is connected with the other connector 3 through the rotary device ball disc, the outer rotary drum upper cover 6-10 comprises two parts, one part is annular and integrally formed with the outer rotary drum outer cylinder, the other part is circular and connected with the annular part through bolts, and the outer rotary drum inner cylinder 6-4 is fixed at the circular part; the inner rotary drum upper cover 6-9 is of an integral round shape, and is connected with the outer rotary drum cylinder through bolts, and the inner rotary drum cylinder is fixed on the inner rotary drum upper cover 6-9.
Further, the first damping adjustment device and the second damping adjustment device have the same structure, as shown in fig. 7, the damping adjustment device 7 includes a limiting device 7-1, a first cylinder 7-2, a second cylinder 7-3, a magnet 7-4, a magnetorheological hollow spring 7-5, a magnetorheological fluid 7-6, and a limiting spring 7-7; the first barrel 7-2 and the second barrel 7-3 are connected together through threads to form a cylindrical cavity, two ends of the cylindrical cavity are respectively provided with a limiting device 7-1, the limiting devices 7-1 extend into the cylindrical cavity, the inner part of the cylindrical cavity is divided into three cavities along the length direction of the cylindrical cavity, a magnetorheological hollow spring 7-5 is arranged in the middle cavity, a magnetorheological fluid 7-6 is arranged in the magnetorheological hollow spring 7-5, limiting springs 7-7 are arranged in the cavities on two sides, the limiting springs 7-7 are sleeved on the limiting devices 7-1, one ends of the limiting springs 7-7 are connected with a magnet 7-4 positioned at the end part of the cylindrical cavity, and the other ends of the limiting springs 7-7 are connected with the end part of the limiting devices 7-1.
The damping adjusting device 7 is respectively arranged inside the inner cylinder and the outer cylinder of the rotating device and is obliquely arranged in the opposite direction, the damping adjusting device 7 is connected with the inner rotating cylinder and the outer rotating cylinder 6 through a connecting circular ring 6-3 and a limiting device 7-1, and the end circular ring of the limiting device 7-1 can be opened. Wherein the outer rotary drum outer cylinder 6-1 and the inner rotary drum inner cylinder upper cover 6-9 are detachable and respectively connected with the outer rotary drum upper cover 6-10 and the inner rotary drum inner cylinder 6-5 through bolt holes 6-7.
Further, the inner rotary drum and the outer rotary drum can relatively rotate through the ball slide ways 6-6 and the balls 5, wherein the pitch of the ball slide ways 6 can be adjusted, external force applied to the damping adjusting device 7 when the inner rotary drum and the outer rotary drum relatively rotate is achieved through adjusting the pitch, and the damping adjusting device 7 can adjust the tension stroke of the magnetorheological hollow spring 7-5 through rotating the damping adjusting device inner drum 7-2 and the damping adjusting device outer drum 7-3.
When vibration occurs, the connectors 3 on two sides generate relative displacement along the axis, which is equivalent to linear motion, then the linear motion of the connectors 3 on two sides is converted into relative rotation of the inner rotary drum and the outer rotary drum of the rotating device 6 through the ball slide ways 6-6 and balls on the inner rotary drum and the outer rotary drum, and the damping adjusting devices 7 are respectively arranged in the outer drum and the inner drum of the rotary drum in a bidirectional equidistant manner, when the rotary drum generates relative rotation, the damping adjusting devices on the inner and outer parts are respectively pulled and pressed to realize energy consumption and vibration reduction; the position of the magnet 7-4 in the damping adjusting device is fixed, external force is transmitted to the magnetorheological hollow spring 7-5 through the limiting device 7-1, when the magnetorheological hollow spring 7-5 is pressed or pulled to deform, the magnetic field strength of the magnetorheological fluid 7-6 is changed due to the change of the position, so that the mutual conversion of the magnetorheological fluid from a liquid to a semisolid form is realized, the rigidity of the magnetorheological spring is dynamically adjusted, the time-lag characteristic of a common spring damper can be better improved due to the controllable rheological characteristic of the magnetorheological fluid, and the damping force of the damping adjusting device is further changed in real time according to the intensity of vibration; wherein the magnetic field strength of the magnet 7-4 can be adjusted according to the actual engineering requirements.
After vibration is finished, the damping adjusting devices 7 inside and outside the rotating device 6 realize self-resetting adjustment under opposite acting forces, and the phenomenon of excessive or insufficient resetting of the damper is effectively improved.
The device provides a magneto-rheological variable damping vibration attenuation energy consumption device based on a spring damper and a magneto-rheological fluid damper, which converts reciprocating displacement in the vibration process into relative rotation of a rotating device, realizes the increase or decrease of damping force by doubling by adjusting the pitch of a ball slideway, and increases the damping adjustment range.
The device changes the position when the magnetorheological spring is pressed or pulled so as to change the magnetic field where the magnetorheological fluid is positioned, changes the rigidity of the magnetorheological spring according to the controllable rheological property of the magnetorheological fluid, and realizes the real-time adjustment of the damping force when the damping regulator works.
The damping and energy-consuming device can effectively inhibit vibration response of the building structure under the action of earthquake or wind load at the position where vibration damage is easy to occur on the main structure of the building, and the damping and adjusting device which is arranged in a double-layer oblique mode inside the device can effectively dissipate energy input into the building structure, so that self-resetting adjustment is realized after vibration is finished, and damage to the building structure caused by permanent displacement generated in the vibration process are avoided.
The above-mentioned embodiments of the present patent are not intended to limit the scope of the present utility model, and the embodiments of the present patent are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present patent according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present patent shall fall within the scope of the present patent.
Claims (7)
1. The magnetorheological variable damping vibration attenuation energy consumption device is characterized by comprising a connector, a rotating device and a damping adjusting device, wherein the rotating device consists of an inner rotating drum and an outer rotating drum, the inner rotating drum and the outer rotating drum are inserted together and respectively comprise an inner drum and an outer drum which are connected together through an upper cover, the inner sides of the outer wall of the inner drum and the inner wall of the outer rotating drum of the inner rotating drum are respectively provided with the same ball slide way, balls are arranged in the ball slide ways, the inner drum of the inner rotating drum and the inner drum of the outer rotating drum realize relative rotation through the ball slide ways and the balls, and the upper cover of the inner rotating drum is connected with the upper cover of the outer rotating drum through the damping adjusting device which is arranged in a bidirectional way; the top and the bottom of the rotating device are respectively connected with a connector through a ball disc; an annular space is formed between the outer cylinder of the inner rotary cylinder and the inner cylinder of the outer rotary cylinder, a circle of first damping adjusting device is arranged in the annular space, and the first damping adjusting device is obliquely arranged; a circle of second damping adjusting devices are also arranged in the inner cylinder of the inner rotary cylinder, the second damping adjusting devices are obliquely arranged, and the inclination angles of the second damping adjusting devices are opposite to those of the first damping adjusting devices; the damping adjusting device comprises a limiting device, a cylindrical shell, a magnet, a magneto-rheological hollow spring and a limiting spring; the two ends of the cylindrical shell are respectively provided with a limiting device, the limiting devices extend into the cylindrical shell, the inside of the cylindrical shell is divided into three cavities along the length direction of the cylindrical shell, a magnetorheological hollow spring is arranged in the middle cavity, magnetorheological fluid is arranged in the magnetorheological hollow spring, limiting springs are arranged in the cavities on two sides, the limiting springs are sleeved on the limiting devices, one ends of the limiting springs are connected with a magnet positioned at the end part of the cylindrical shell, and the other ends of the limiting springs are connected with the end part of the limiting devices.
2. The magnetorheological damping-variable vibration attenuation energy consumption device according to claim 1, wherein the cylindrical shell comprises two parts, the two parts of the shell are connected through threads, and the adjustment of the damping force of the vibration attenuation energy consumption device can be realized by adjusting the thread pitch.
3. A magnetorheological variable damping vibration attenuation energy dissipating device according to claim 1 wherein the connector is selectively bolted or welded to the connector base and the building structure based on the type of building structure.
4. A magnetorheological variable damping vibration attenuation and dissipation device according to claim 1 and wherein said rotating means is made of stainless steel insulation material.
5. The magnetorheological damping-variable vibration attenuation energy dissipation device according to claim 1, wherein the balls between the ball slides are symmetrically arranged at equal intervals.
6. The magnetorheological variable damping vibration attenuation energy dissipating device of claim 1 wherein the base of the connector is fixedly mounted in a vibration sensitive position of the body structure.
7. The magnetorheological damping-variable vibration attenuation energy dissipation device of claim 1, wherein the inclination angle of the damping adjustment device inside the rotation device is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962136.5A CN115163723B (en) | 2022-08-11 | 2022-08-11 | Magneto-rheological variable damping vibration attenuation energy consumption device |
Applications Claiming Priority (1)
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| CN116498680B (en) * | 2023-05-29 | 2024-01-26 | 江苏晟楠电子科技股份有限公司 | Electromagnetic damper for aircraft |
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