CN115163723A - Magnetorheological variable damping vibration attenuation energy dissipation device - Google Patents
Magnetorheological variable damping vibration attenuation energy dissipation device Download PDFInfo
- Publication number
- CN115163723A CN115163723A CN202210962136.5A CN202210962136A CN115163723A CN 115163723 A CN115163723 A CN 115163723A CN 202210962136 A CN202210962136 A CN 202210962136A CN 115163723 A CN115163723 A CN 115163723A
- Authority
- CN
- China
- Prior art keywords
- damping
- magnetorheological
- cylinder
- vibration
- limiting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention provides a magnetorheological variable damping vibration attenuation energy consumption device, which comprises a connector, a rotating device and a damping adjusting device, can convert reciprocating displacement of vibration into relative rotation of the rotating device, realizes multiplication or reduction of damping force by adjusting the screw pitch of a ball slideway, enlarges the damping adjusting range, changes the rigidity of a magnetorheological spring according to the controllable rheological property of magnetorheological fluid, realizes real-time adjustment of the damping force when the damping adjusting device works, can effectively inhibit the vibration response of a building structure under the action of earthquake or wind load, realizes self-resetting adjustment after the vibration is finished, and avoids the damage and the damage of permanent displacement generated in the vibration process to the building structure.
Description
Technical Field
The invention relates to the field of vibration control of civil engineering, in particular to a magnetorheological variable damping vibration attenuation 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 structure forms gradually tends to diversify and complicate, and the sensitivity of high-rise buildings to earthquake or wind load is remarkably improved. The ambient vibrations tend to induce large lateral vibrations and deformations of the body structure, even beyond allowable comfort requirements. In order to reduce the vibration response of structures, there is increasing interest in installing reasonably effective damping systems in high-rise buildings and high-rise structures.
At present, the magneto-rheological damper has wide application in engineering due to the reliability of passive control and the adaptability of active control. The application numbers are: 201810866592.3, a chinese patent of invention, a semi-active magneto-rheological piezoelectric energy feedback type damper, discloses a novel magneto-rheological damping adjusting device, which supplies power to an excitation coil through a piezoelectric power generation unit, and controls the current change in the excitation coil by using a pressure sensor and a controller, so that the magneto-rheological fluid can rapidly change the flow state of the magneto-rheological fluid along with the change of the magnetic field inside the excitation coil, adjust the damping force provided by the damper in real time, and achieve the purpose of intelligent vibration reduction.
Although the aforesaid chinese invention patent can change the flow characteristics of the magnetorheological fluid to adjust the damping and stiffness of the damper in real time according to the excitation load form and the response state of the structure. However, as a semi-active control device, energy input is required in the working process, and the power generation unit and the power storage unit are expensive in manufacturing cost and complex in manufacturing, and are not suitable for large-scale engineering application.
Permanent displacement damage can be generated in the structure after vibration occurs, most of the existing magneto-rheological dampers cannot realize an automatic reset function, and the common spring self-reset damper also has the damping attenuation condition under a long-term working state. Novel self-resetting damper, as application number: 202021409509.9 Chinese utility model patent composite self-resetting solid-liquid mixed damper uses memory alloy as its self-resetting device, and memory alloy is easier to break under the fatigue load effect compared with common steel, so that the damper has short service life and high use cost.
Disclosure of Invention
The invention aims to provide a magnetorheological variable damping vibration attenuation energy consumption device, aiming at reducing the horizontal vibration response of a high-rise building or a high-rise structure under the action of wind load and earthquake and achieving the effects of energy consumption and vibration attenuation, and adopting the following technical scheme:
the invention provides a magnetorheological variable damping shock absorption and energy dissipation device which comprises a connector, a rotating device and a damping adjusting device, wherein the rotating device consists of an inner rotating cylinder and an outer rotating cylinder, the inner rotating cylinder and the outer rotating cylinder are inserted together and respectively comprise an inner cylinder and an outer cylinder which are connected together through an upper cover, the inner sides of the outer wall of the inner cylinder of the inner rotating cylinder and the inner wall of the outer rotating cylinder are respectively provided with the same ball slide ways, balls are arranged in the ball slide ways, the inner cylinder of the inner rotating cylinder and the inner cylinder of the outer rotating cylinder realize relative rotation through the ball slide ways and the balls, and the upper cover of the inner rotating cylinder is connected with the upper cover of the outer rotating cylinder through the damping adjusting device which is arranged in a two-way manner; the top and bottom of the swivel are each connected to a connector by a ball plate.
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 devices are arranged in the annular space, and the first damping adjusting devices are obliquely arranged.
As a further technical scheme, a circle of second damping adjusting device is also arranged in the inner cylinder of the inner rotating 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 magnetorheological 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 interior 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 at the two sides and sleeved on the limiting devices, one end of each limiting spring is connected with a magnet positioned at the end part of the cylindrical shell, and the other end of each limiting spring is connected with the end part of the limiting device.
As a further technical scheme, the cylindrical shell comprises two parts, the two parts of the shell are connected through threads, and the damping force of the damping and energy dissipating device can be adjusted by adjusting the thread pitch of the threads.
As a further technical scheme, the connector can be used for selectively connecting or welding the connector base with the building structure through the punching bolt 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 slideways are symmetrically arranged at equal intervals,
as a further technical scheme, a base of the connector is fixedly arranged at a vibration sensitive position of the main 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 invention are:
the magnetorheological variable damping vibration attenuation energy consumption device provided by the invention can adjust the damping force of the device according to the actual engineering requirements and the arrangement position, converts the reciprocating displacement in the vibration process of a building into the relative rotation motion between the inner rotary cylinder and the outer rotary cylinder, and has higher vibration attenuation efficiency compared with the traditional transmission mechanical structure.
The invention can provide damping force which is changed instantly when the damping and energy-consuming device works based on the instant rheological property of the magnetorheological fluid, can effectively improve the sensitivity of the damping and energy-consuming device, effectively improves the reaction hysteresis phenomenon of the traditional spring damping device, adjusts the effective stroke of the damping and energy-consuming device by adjusting the initial position of the inner and outer rotary cylinders, and adjusts the tension stroke of the damping adjusting device by rotating the lengths of the outer cylinder, the inner cylinder and the limiting spring of the damping adjusting device.
According to the invention, 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 reduced, and the self-resetting adjustment can be realized; the building structure has the advantages that the large permanent displacement damage of the building structure after the vibration occurs is avoided, the energy input into the building structure can be well dissipated, the structure is simple, the maintenance is convenient, the earthquake resistance and the wind resistance of the building structure can be effectively improved, and good social benefits and economic benefits can be generated.
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 schematic view of a magnetorheological damping-variable damping energy-consuming device according to the present invention;
FIG. 2 isbase:Sub>A cross-sectional view of the magnetorheological damping-variable damping vibration-damping energy-consuming device A-A according to the present invention;
FIG. 3 is a schematic view of an external rotating device of the magnetorheological damping-variable damping vibration-damping energy-consuming device according to the present invention;
FIG. 4 is a schematic view of an inner rotation device of the magnetorheological damping vibration attenuation energy dissipation device according to the present invention;
FIG. 5 is a schematic view of an upper cover of an inner rotary drum of the magnetorheological damping vibration attenuation energy dissipation device according to the present invention;
FIG. 6 is a schematic diagram of an upper cover of an outer rotary drum of the magnetorheological damping vibration attenuation energy dissipation device according to the present invention;
FIG. 7 is an exploded view of the outer cylinder of the outer rotary cylinder and the upper cover of the outer rotary cylinder of the magnetorheological damping vibration damping energy dissipation device according to the present invention;
FIG. 8 is an exploded view of the outer cylinder of the outer rotary cylinder and the upper cover of the outer rotary cylinder of the magnetorheological damping vibration damping energy dissipation device according to the present invention;
FIG. 9 is a top view of the damping adjustment device of the magnetorheological damping energy dissipating device according to the present invention;
FIG. 10 is a schematic view of a ball-rolling disk of a magnetorheological damping-variable damping-vibration-damping energy-dissipating device connector according to the present invention.
In the figure: the device comprises a connector base 1, a pin shaft 2, a connector 3, a ball plate 4-1, a ball plate bolt hole 5, a rotating device 6, an outer rotating cylinder 6-1, an outer rotating cylinder 6-2, an inner rotating cylinder 6-3, a connecting ring 6-4, an inner rotating cylinder 6-5, an inner rotating cylinder 6-6, a ball slideway 6-6, a bolt hole 6-7, a ball plate 6-8, an inner rotating cylinder 6-9, an upper rotating cylinder 6-10, an upper rotating cylinder 7-7, a damping adjusting device 7, a limiting device 7-1, a first cylinder 7-2, a second cylinder 7-3, a magnet 7-4, a hollow spring 7-5, a magnetorheological fluid 7-6 and a limiting spring 7-7.
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" when used in this specification are intended to refer only to the upper, lower, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
As introduced in the background art, the magnetorheological damper which is widely researched in the prior art belongs to a piston pore flow mode, and the magnetorheological damper needs more magnetorheological fluid, is low in utilization rate and is easy to precipitate and block. Meanwhile, the adjustable range of the damping force is narrow, and when the external environment is excited to be small, the damper cannot provide proper damping force. And permanent displacement damage can be generated in the structure after vibration occurs, most of the existing dampers can not realize the automatic reset function, and the common spring damper also has the damping attenuation condition under the long-term working state.
Based on the defects, under the condition that the external size and the energy consumption of the damper are not increased, in order to realize adjustable damping of the damper, slow down the damping attenuation of the spring under the long-term working state, realize the self-resetting of the damping device after the vibration occurs, improve the utilization rate of the magnetorheological fluid, realize the effective dissipation of the vibration energy of the input structure, further simplify the structure of the damper and reduce the manufacturing cost of the damper, the advantages of the common spring damper and the magnetorheological damper are necessarily combined, and the vibration attenuation and energy consumption device which is simple in structure and ideal in working effect has important significance.
The magnetorheological variable damping vibration attenuation energy consumption device provided by the invention is characterized in that one end of the connecting device is provided with a ball disc, and the other end of the connecting device is provided with a direction-variable 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, the inner cylinder wall of the inner rotating cylinder is provided with a ball slideway, and the inner rotating cylinder and the outer rotating cylinder are respectively provided with a ball turntable and a connecting ring at the bottom of the inner cylinder; magnets are adhered to two ends inside the damping adjusting device, threads are arranged on an outer barrel of the damping adjusting device, a spring, a magnetorheological spring and a limiting device are arranged in the damping adjusting device, the magnetorheological spring is filled with magnetorheological fluid, and the magnetorheological spring is located between the two limiting devices. The inner rotary cylinder and the outer rotary cylinder are both cylindrical and are composed of two concentric cylindrical cylinders, wherein the outer cylinder bottom of the outer rotary cylinder is detachable, and the inner cylinder bottom of the inner rotary cylinder is detachable; the open holes at the two ends of the magnetorheological spring are sealed to prevent the magnetorheological fluid from flowing out; the inner and outer rotary cylinders 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 and outer rotating barrels through the ball discs and the balls, wherein the ball disc on one side of the end part of the connector is detachable; connecting rings are arranged at the bottom of the inner side of the inner and outer rotating cylinders at equal intervals, and the connecting rings of the upper and lower rotating cylinders are arranged in a staggered manner; the damping adjusting device is connected with the inner and outer rotating cylinders through a connecting ring; the outer cylinder of the damping regulator consists of a cylindrical inner cylinder and an outer cylinder which are provided 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 coated among the balls, the ball slide ways and the ball disc, so that the 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 direction changing device, and the connector body and the connecting disc can rotate around a pin shaft.
The present invention will be described in detail with reference to the accompanying drawings;
the magnetorheological damping energy dissipation device with variable damping provided by the embodiment comprises three parts, namely 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, two connectors 3 are respectively connected with the base 1 through pin shafts, the base 1 is connected with a structure, and the base 1 can be in bolted connection or welded with the base 1 according to different materials.
Furthermore, the connector 3 is connected with the rotating device 6 through the ball disc 4, the ball disc 4 can be detached, the connector 3 extends into the rotating shaft, then the ball disc 4 is assembled through the bolt holes 4-1, and lubricating oil is coated in the ball disc to reduce friction force of the rotating device in the rotating process.
Further, the rotating device 6 comprises an outer rotating cylinder outer cylinder 6-1, an inner rotating cylinder 6-2, a connecting ring 6-3, an outer rotating cylinder inner cylinder 6-4, an inner rotating cylinder inner 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 figure 3, an outer cylinder 6-1 of the outer rotary cylinder, an inner cylinder 6-4 of the outer rotary cylinder and an upper cover 6-10 of the outer rotary cylinder are combined together to form an outer rotary part, and a ball slideway 6-6 is arranged on the inner wall of the inner cylinder 6-4 of the outer rotary cylinder; the ball slideway 6-6 is spiral and forms a thread shape;
as shown in fig. 4, an inner rotary outer cylinder 6-2, an inner rotary cylinder inner cylinder 6-5 and an inner rotary cylinder upper cover 6-9 are combined together to form an inner rotary part, a ball slideway 6-6 is correspondingly arranged on the outer wall of the inner rotary cylinder inner cylinder 6-5, and the ball slideway 6-6 is spiral and forms a thread shape; balls 5 are arranged in the ball slide ways 6-6, so that the relative rotation between the inner rotating piece and the outer rotating piece is realized through the balls;
during assembly, the outer rotary drum outer cylinder 6-1 is inserted outside the inner rotary 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 covers 6-10 of the outer rotary cylinder and the upper covers 6-9 of the inner rotary cylinder are respectively provided with a connecting ring 6-3, two ends of a damping adjusting device 7 are connected to the connecting rings 6-3 of the two upper covers, and two groups of damping adjusting devices 7 are arranged, wherein one group of damping adjusting devices 7 (a first damping adjusting device) is arranged on an inner ring formed by the inner rotary part and the outer rotary part, 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 part and the outer rotary part; each group of damping adjusting devices 7 comprises four damping adjusting devices 7, each damping adjusting device in the four damping adjusting devices 7 is obliquely arranged, the inclination angles of the four damping adjusting devices are the same, but the inclination angles of the two groups of damping adjusting devices 7 are opposite; when the rotary cylinder rotates relatively, one group of damping adjusting devices is pulled, and the other group of damping adjusting devices is pressed, so that the internal stress and the external stress are opposite, the damping attenuation of the spring can be effectively reduced, and self-resetting adjustment can be realized; the building structure has the advantages that the large permanent displacement damage of the building structure after the vibration occurs is avoided, the energy input into the building structure can be well dissipated, the structure is simple, the maintenance is convenient, the earthquake resistance and the wind resistance of the building structure can be effectively improved, and good social benefits and economic benefits can be generated.
Further, as shown in fig. 5 and 6, the center positions of the outer rotary cylinder upper cover 6-10 and the inner rotary cylinder upper cover 6-9 are both provided with a rotary device ball disc 6-8, the outer rotary cylinder upper cover 6-10 is connected with the connector 3 through the rotary device ball disc, the inner rotary cylinder upper cover 6-9 is connected with the other connector 3 through the rotary device ball disc, and the outer rotary cylinder upper cover 6-10 comprises two parts, wherein one part is annular and is integrally formed with the outer rotary cylinder outer cylinder, the other part is circular and is connected with the annular part through a bolt, and the outer rotary cylinder inner cylinder 6-4 is fixed on the circular part; the upper cover 6-9 of the inner rotary drum is an integral circle and is connected with the outer drum of the inner rotary drum through a bolt, and the inner drum of the inner rotary drum is fixed on the upper cover 6-9 of the inner rotary drum.
Further, the first damping adjusting device and the second damping adjusting device have the same structure, and as shown in fig. 7, the damping adjusting device 7 comprises 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, magnetorheological fluid 7-6 and a limiting spring 7-7; the first tube 7-2 and the second tube 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 interior 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, magnetorheological fluid 7-6 is arranged in the magnetorheological hollow spring 7-5, limiting springs 7-7 are arranged in the cavities at two sides, the limiting springs 7-7 are sleeved on the limiting devices 7-1, one end of each limiting spring 7-7 is connected with a magnet 7-4 positioned at the end part of the cylindrical cavity, and the other end of each limiting spring is connected with the end part of the limiting device 7-1.
The damping adjusting device 7 is respectively arranged in 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 ring 6-3 and a limiting device 7-1, wherein the end part ring of the limiting device 7-1 can be opened. Wherein, the outer cylinder 6-1 of the outer rotary cylinder and the upper cover 6-9 of the inner cylinder of the inner rotary cylinder are detachable and are respectively connected with the upper cover 6-10 of the outer rotary cylinder and the inner cylinder 6-5 of the inner rotary cylinder through bolt holes 6-7.
Furthermore, the inner rotating cylinder and the outer rotating cylinder can rotate relative to each other through the ball slideway 6-6 and the ball 5, wherein the screw pitch of the ball slideway 6 can be adjusted, external force applied to the damping adjusting device 7 when the inner rotating cylinder and the outer rotating cylinder rotate relative to each other can be realized through adjusting the screw pitch, and the damping adjusting device 7 can realize adjustment of the tension stroke of the magnetorheological hollow spring 7-5 through rotating the inner damping adjusting device cylinder 7-2 and the outer damping adjusting device cylinder 7-3.
When vibration occurs, the connectors 3 on the two sides generate relative displacement along the axis, namely linear motion, then the linear motion of the connectors 3 on the two sides is converted into the relative rotation of the inner rotary cylinder and the outer rotary cylinder of the rotary device 6 through the ball slideways 6-6 and the balls on the inner rotary cylinder and the outer rotary cylinder, the damping adjusting devices 7 are respectively arranged in the outer rotary cylinder and the inner rotary cylinder at equal intervals in two directions, when the rotary cylinders generate relative rotation, the damping adjusting devices inside and outside are respectively pulled and pressed, energy consumption is realized, and vibration reduction is further realized; the position of a 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 compressed or pulled to deform, the magnetic field intensity of the magnetorheological hollow spring 7-6 is changed due to the change of the position, so that the magnetorheological hollow spring is converted from a liquid state to a semisolid state, the rigidity of the magnetorheological hollow 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 hollow spring, and the damping force of the damping adjusting device is changed in real time according to the vibration strength; wherein the magnetic field strength of the magnet 7-4 can be adjusted according to the actual engineering requirements.
After the vibration is finished, the damping adjusting devices 7 inside and outside the rotating device 6 realize self-reset adjustment under opposite acting forces, and the phenomenon that the damper is reset excessively or insufficiently is effectively improved.
The device provides a magneto-rheological variable damping vibration attenuation energy dissipation device based on a spring damper and a magneto-rheological fluid damper, the reciprocating displacement in the vibration process is converted into the relative rotation of a rotating device, the damping force is multiplied or reduced by adjusting the screw pitch of a ball slideway, and the damping adjustment range is enlarged.
The device changes the position of the magnetorheological fluid when the magnetorheological spring is pressed or pulled so as to cause the change of the magnetic field of the magnetorheological fluid, 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 dissipation device can effectively restrain the vibration response of a building structure under the action of earthquake or wind load at the position where the main structure of the building is easy to vibrate and destroy, and the double-layer obliquely arranged damping adjusting device in the device can effectively dissipate the energy input into the building structure, so that the self-reset adjustment after the vibration is finished is realized, and the damage and the destruction of permanent displacement generated in the vibration process to the building structure are avoided.
The above embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above structures of the present invention without departing from the basic technical concept of the present invention as described above based on the above general technical knowledge and conventional means of the present patent.
Claims (10)
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 cylinder and an outer rotating cylinder, the inner rotating cylinder and the outer rotating cylinder are inserted together and respectively comprise an inner cylinder and an outer cylinder which are connected together through an upper cover, the inner sides of the outer wall of the inner cylinder of the inner rotating cylinder and the inner wall of the outer rotating cylinder are respectively provided with the same ball slide ways, balls are arranged in the ball slide ways, the inner cylinder of the inner rotating cylinder and the inner cylinder of the outer rotating cylinder realize relative rotation through the ball slide ways and the balls, and the upper cover of the inner rotating cylinder is connected with the upper cover of the outer rotating cylinder through the damping adjusting device which is arranged in a two-way manner; the top and bottom of the swivel are each connected to a connector by a ball plate.
2. The magnetorheological damping variable damping vibration and energy dissipation device according to claim 1, wherein an annular space is formed between the outer cylinder of the inner rotary cylinder and the inner cylinder of the outer rotary cylinder, a ring of the first damping adjusting devices is arranged in the annular space, and the first damping adjusting devices are obliquely arranged.
3. The magnetorheological damping vibration and energy dissipation device according to claim 2, wherein a ring of second damping adjusting devices are also arranged in the inner cylinder of the inner rotating cylinder, the second damping adjusting devices are arranged obliquely, and the inclination angle of the second damping adjusting devices is opposite to that of the first damping adjusting devices.
4. The magnetorheological damping-variable vibration-damping energy-consumption device according to claim 1, wherein the damping adjusting device comprises a limiting device, a cylindrical shell, a magnet, a magnetorheological 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 interior 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 at the two sides and sleeved on the limiting devices, one end of each limiting spring is connected with a magnet positioned at the end part of the cylindrical shell, and the other end of each limiting spring is connected with the end part of the limiting device.
5. The magnetorheological damping-variable, vibration-damping and energy-dissipating device according to claim 4, wherein the cylindrical housing comprises two parts, the two parts of the housing are connected by a thread, and the damping force of the damping and energy-dissipating device can be adjusted by adjusting the pitch of the thread.
6. The magnetorheological variable damping, vibration damping and energy dissipation device according to claim 1, wherein the connector is used for selectively connecting or welding the connector base with the building structure by using a hole-drilling bolt according to the type of the building structure.
7. The magnetorheological damping, vibration damping and energy dissipating device according to claim 1, wherein the rotating means is made of stainless steel insulating material.
8. The magnetorheological damping variable damping vibration and energy dissipation device according to claim 1, wherein the balls between the ball slideways are symmetrically arranged at equal intervals.
9. The magnetorheological damping and energy dissipating device according to claim 1, wherein the base of the connector is fixedly mounted at a vibration sensitive location of the body structure.
10. The magnetorheological damping variable damping vibration and energy dissipation device according to claim 1, wherein the inclination angle of the damping adjusting device inside the rotating device can be adjusted.
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)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115163723A true CN115163723A (en) | 2022-10-11 |
| CN115163723B CN115163723B (en) | 2023-06-09 |
Family
ID=83479895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210962136.5A Active CN115163723B (en) | 2022-08-11 | 2022-08-11 | Magneto-rheological variable damping vibration attenuation energy consumption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115163723B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498680A (en) * | 2023-05-29 | 2023-07-28 | 江苏晟楠电子科技股份有限公司 | Electromagnetic damper for aircraft |
Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0102676D0 (en) * | 2001-02-02 | 2001-03-21 | Trysome Ltd | Dampers |
| US20040195061A1 (en) * | 2003-04-07 | 2004-10-07 | Kelso Shawn P. | Magnetorheological fluid vibration Isolator |
| CN201031901Y (en) * | 2007-04-12 | 2008-03-05 | 宝山钢铁股份有限公司 | Magnetic buffer |
| JP2012184816A (en) * | 2011-03-07 | 2012-09-27 | Kozo Keikaku Engineering Inc | Damping device and vibration control device of structure |
| CN204781414U (en) * | 2015-07-10 | 2015-11-18 | 同济大学 | Harmonious viscid mass damper |
| CN205244233U (en) * | 2015-12-17 | 2016-05-18 | 西安科技大学 | From energizing quantity formula vehicle magnetorheological damper device |
| WO2016108699A1 (en) * | 2014-12-30 | 2016-07-07 | Esuite.Pl Sp. Z O.O. | Vibration damper of lightweight engineering structures |
| CN106402228A (en) * | 2016-11-30 | 2017-02-15 | 浙江建科减震科技有限公司 | Electromagnetic eddy rotating damper |
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN206368933U (en) * | 2016-12-16 | 2017-08-01 | 同济大学 | A kind of tandem type acceleration inertia sinker |
| CN107061603A (en) * | 2017-03-21 | 2017-08-18 | 哈尔滨工程大学 | A kind of novel magnetorheological fluid Multi-regulation vibration isolator |
| CN107061596A (en) * | 2016-12-29 | 2017-08-18 | 浙江科力车辆控制系统有限公司 | A kind of height adjusting valve in suspension |
| CN107435706A (en) * | 2017-08-29 | 2017-12-05 | 华中科技大学 | A kind of piston and the permanent magnet type magnetic current variable fluid damper of self-adaptive damping regulation |
| CN108253075A (en) * | 2018-01-22 | 2018-07-06 | 东北大学 | A kind of MR damper with multiband vibration energy regeneration ability |
| CN207740386U (en) * | 2017-08-30 | 2018-08-17 | 珠海中建兴业绿色建筑设计研究院有限公司 | A kind of Self-resetting tension and compression damper of variation rigidity |
| CN108730410A (en) * | 2018-07-02 | 2018-11-02 | 浙江大学 | Adjustable inertia mass damper |
| CN108729571A (en) * | 2018-08-01 | 2018-11-02 | 山东大学 | A kind of magnetorheological energy damper of piezoelectricity of half active |
| CN109235688A (en) * | 2018-11-07 | 2019-01-18 | 山东大学 | A kind of magnetorheological half active stiffness adjustable shock absorber |
| CN110145566A (en) * | 2019-04-28 | 2019-08-20 | 东南大学 | A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission |
| CN110778634A (en) * | 2019-12-02 | 2020-02-11 | 沈阳众磊道桥有限公司 | Corrosion-resistant high-flux double-liquid damper |
| CN111021571A (en) * | 2019-12-26 | 2020-04-17 | 山东大学 | Semi-active positive and negative stiffness parallel self-coordination vibration damper |
| CN211082664U (en) * | 2019-12-02 | 2020-07-24 | 沈阳众磊道桥有限公司 | Corrosion-resistant high-flux double-liquid damper |
| CN112503129A (en) * | 2020-12-14 | 2021-03-16 | 广州大学 | Semi-active magneto-rheological rotary damper |
| CN213509019U (en) * | 2020-07-17 | 2021-06-22 | 福州大学 | Composite self-resetting solid-liquid mixed damper |
| CN113847384A (en) * | 2021-09-15 | 2021-12-28 | 山东大学 | Combined type multidimensional vibration damping device with damping amplification function |
| CN216279146U (en) * | 2021-12-07 | 2022-04-12 | 石家庄铁道大学 | Variable-rigidity variable-damping magnetorheological shock absorber |
| CN114435206A (en) * | 2022-01-24 | 2022-05-06 | 安徽大学 | Variable-rigidity variable-damping magnetorheological seat suspension with vibration-damping and shock-resisting combined function |
| KR20220068376A (en) * | 2020-11-19 | 2022-05-26 | 조숙현 | Impact Buffering Range Extended Quake Resistant Electric Distribution Cabinet |
-
2022
- 2022-08-11 CN CN202210962136.5A patent/CN115163723B/en active Active
Patent Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0102676D0 (en) * | 2001-02-02 | 2001-03-21 | Trysome Ltd | Dampers |
| US20040195061A1 (en) * | 2003-04-07 | 2004-10-07 | Kelso Shawn P. | Magnetorheological fluid vibration Isolator |
| CN201031901Y (en) * | 2007-04-12 | 2008-03-05 | 宝山钢铁股份有限公司 | Magnetic buffer |
| JP2012184816A (en) * | 2011-03-07 | 2012-09-27 | Kozo Keikaku Engineering Inc | Damping device and vibration control device of structure |
| WO2016108699A1 (en) * | 2014-12-30 | 2016-07-07 | Esuite.Pl Sp. Z O.O. | Vibration damper of lightweight engineering structures |
| CN204781414U (en) * | 2015-07-10 | 2015-11-18 | 同济大学 | Harmonious viscid mass damper |
| CN205244233U (en) * | 2015-12-17 | 2016-05-18 | 西安科技大学 | From energizing quantity formula vehicle magnetorheological damper device |
| CN106402228A (en) * | 2016-11-30 | 2017-02-15 | 浙江建科减震科技有限公司 | Electromagnetic eddy rotating damper |
| CN206368933U (en) * | 2016-12-16 | 2017-08-01 | 同济大学 | A kind of tandem type acceleration inertia sinker |
| CN107061596A (en) * | 2016-12-29 | 2017-08-18 | 浙江科力车辆控制系统有限公司 | A kind of height adjusting valve in suspension |
| CN107061603A (en) * | 2017-03-21 | 2017-08-18 | 哈尔滨工程大学 | A kind of novel magnetorheological fluid Multi-regulation vibration isolator |
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN107435706A (en) * | 2017-08-29 | 2017-12-05 | 华中科技大学 | A kind of piston and the permanent magnet type magnetic current variable fluid damper of self-adaptive damping regulation |
| CN207740386U (en) * | 2017-08-30 | 2018-08-17 | 珠海中建兴业绿色建筑设计研究院有限公司 | A kind of Self-resetting tension and compression damper of variation rigidity |
| CN108253075A (en) * | 2018-01-22 | 2018-07-06 | 东北大学 | A kind of MR damper with multiband vibration energy regeneration ability |
| CN108730410A (en) * | 2018-07-02 | 2018-11-02 | 浙江大学 | Adjustable inertia mass damper |
| CN108729571A (en) * | 2018-08-01 | 2018-11-02 | 山东大学 | A kind of magnetorheological energy damper of piezoelectricity of half active |
| CN109235688A (en) * | 2018-11-07 | 2019-01-18 | 山东大学 | A kind of magnetorheological half active stiffness adjustable shock absorber |
| CN110145566A (en) * | 2019-04-28 | 2019-08-20 | 东南大学 | A kind of revolving type magnetic rheologic damper and its working method of ball-screw-transmission |
| CN211082664U (en) * | 2019-12-02 | 2020-07-24 | 沈阳众磊道桥有限公司 | Corrosion-resistant high-flux double-liquid damper |
| CN110778634A (en) * | 2019-12-02 | 2020-02-11 | 沈阳众磊道桥有限公司 | Corrosion-resistant high-flux double-liquid damper |
| CN111021571A (en) * | 2019-12-26 | 2020-04-17 | 山东大学 | Semi-active positive and negative stiffness parallel self-coordination vibration damper |
| CN213509019U (en) * | 2020-07-17 | 2021-06-22 | 福州大学 | Composite self-resetting solid-liquid mixed damper |
| KR20220068376A (en) * | 2020-11-19 | 2022-05-26 | 조숙현 | Impact Buffering Range Extended Quake Resistant Electric Distribution Cabinet |
| CN112503129A (en) * | 2020-12-14 | 2021-03-16 | 广州大学 | Semi-active magneto-rheological rotary damper |
| CN113847384A (en) * | 2021-09-15 | 2021-12-28 | 山东大学 | Combined type multidimensional vibration damping device with damping amplification function |
| CN216279146U (en) * | 2021-12-07 | 2022-04-12 | 石家庄铁道大学 | Variable-rigidity variable-damping magnetorheological shock absorber |
| CN114435206A (en) * | 2022-01-24 | 2022-05-06 | 安徽大学 | Variable-rigidity variable-damping magnetorheological seat suspension with vibration-damping and shock-resisting combined function |
Non-Patent Citations (2)
| Title |
|---|
| 张进秋;王兴野;孙宜权;张磊;刘义乐;: "自传感自供能磁流变减振器研究现状综述", 液压与气动, no. 04, pages 99 - 104 * |
| 王磊;马光柏;闫芳;吕瑞杰;: "磁流变自供电减振器的研究进展及发展趋势", 机械工程师, no. 08, pages 270 - 273 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498680A (en) * | 2023-05-29 | 2023-07-28 | 江苏晟楠电子科技股份有限公司 | Electromagnetic damper for aircraft |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115163723B (en) | 2023-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110805348B (en) | Self-resetting rotary inertia capacity damper | |
| CN102168738B (en) | Six-degree-of-freedom active and passive dynamic vibration-absorbing device | |
| CN113847384B (en) | Combined type multidimensional vibration damping device with damping amplification function | |
| CN101576141B (en) | Longitudinal linear vibration inhibiting method and device based on rotary magnetorheological device | |
| CN108730410B (en) | Adjustable inertial mass damper | |
| CN113606276B (en) | Circumferential array spiral groove piston anti-settling magnetorheological damper | |
| CN204326293U (en) | Displacement rotating scale-up version marmem damper | |
| CN201050121Y (en) | Multidimensional hyperelastic shape memory alloy damper | |
| CN115163723A (en) | Magnetorheological variable damping vibration attenuation energy dissipation device | |
| CN101725660A (en) | High-frequency decoupling piston magneto-rheological damper | |
| CN201202089Y (en) | Position limiter for liquid viscous damper for bridge | |
| CN113889956B (en) | Energy feedback type multiple energy consumption damper | |
| CN111219437A (en) | Magnetorheological particle damper capable of recycling energy | |
| CN114110290A (en) | Nonlinear self-tuning pipeline vibration noise semi-active control method and system | |
| CN113623349A (en) | Variable-damping brushless motor damping assembly | |
| CN110259872B (en) | Magneto-rheological inertia variable damping torsional vibration damper | |
| KR20010093004A (en) | Shock absorber using magnetorheological fluid | |
| CN105570371A (en) | Liquid pressure-regulated and velocity-dependent dry friction shock absorber | |
| CN201553987U (en) | Built-in dragline hydraulic damper | |
| CN211924794U (en) | Built-in steel ball tuning type magnetic liquid damping shock absorber | |
| CN209800610U (en) | Damping device for shock insulation support | |
| CN112503130A (en) | Magneto-rheological rotary damper | |
| CN207228741U (en) | A kind of rotary damper | |
| CN216111895U (en) | Variable damping viscous damper | |
| CN114351886B (en) | Be used to container of adaptive control of volume coefficient |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |