CN114962529B - Multi-excitation multi-disk magneto-rheological broadband vibration isolator - Google Patents
Multi-excitation multi-disk magneto-rheological broadband vibration isolator Download PDFInfo
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- CN114962529B CN114962529B CN202210441343.6A CN202210441343A CN114962529B CN 114962529 B CN114962529 B CN 114962529B CN 202210441343 A CN202210441343 A CN 202210441343A CN 114962529 B CN114962529 B CN 114962529B
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- tile
- magnetorheological
- friction
- magnetic tile
- shoe
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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
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
本发明公开了一种多励磁多盘片式磁流变宽频隔振器包括外套安装于工业管道上的内磁瓦、与内磁瓦同轴布置的固定环组件、内套于固定环组件的外磁瓦以及布置于内磁瓦和外磁瓦之间的磁流变组件；所述磁流变组件包括安装于内磁瓦上的内摩擦瓦、设置于外磁瓦上的外摩擦瓦以及布置于内摩擦瓦和外摩擦瓦之间的复合磁流变片；所述工业管道沿径向方向运动带动内磁瓦运动进而使内摩擦瓦沿径向方向运动，本技术方案的高频减振装置工作频段宽，采用剪切模式下模式下工作的磁流变阻尼器，将液体介质替换为基于无纺布的复合基体磁流变材料，替换了流动工作模式下的液体环境，可以工作于中高频情况下，降低高频硬化效应，阻尼力可调范围宽，响应时间迅速，抗沉降性能好，结构紧凑，可靠性高。
The invention discloses a multi-excitation multi-disk magnetorheological wide-band vibration isolator comprising an inner magnetic tile whose outer sleeve is installed on an industrial pipeline, a fixed ring assembly coaxially arranged with the inner magnetic tile, an outer magnetic tile sleeved inside the fixed ring assembly, and a magnetorheological assembly arranged between the inner magnetic tile and the outer magnetic tile; the magnetorheological assembly comprises an inner friction tile installed on the inner magnetic tile, an outer friction tile arranged on the outer magnetic tile, and a composite magnetorheological sheet arranged between the inner friction tile and the outer friction tile; the industrial pipeline moves in a radial direction to drive the inner magnetic tile to move and then causes the inner friction tile to move in a radial direction. The high-frequency vibration reduction device of the technical solution has a wide operating frequency band, adopts a magnetorheological damper working in a shear mode, replaces the liquid medium with a composite matrix magnetorheological material based on non-woven fabric, replaces the liquid environment in the flow working mode, can work in medium and high frequency conditions, reduces the high-frequency hardening effect, has a wide adjustable damping force range, a rapid response time, good anti-settling performance, a compact structure, and high reliability.
Description
Technical Field
The invention relates to the field of magnetorheological vibration isolation, in particular to a multi-excitation multi-disc type magnetorheological wide-frequency vibration isolator.
Background
Pipe vibration is a common phenomenon, and serious vibration damages the pipe structure, so that measures are necessary to reduce the pipe vibration. The existing pipeline vibration damping method mainly utilizes damping elements such as a hydraulic system and the like to consume vibration energy so as to achieve the vibration suppression effect. However, most of pipeline vibration is high-frequency vibration, which can cause the phenomenon of high-frequency hardening of the traditional pure liquid damper, reduce the dissipation efficiency of the damper to vibration energy, and for a high-frequency vibration structure, the traditional magnetorheological fluid damping structure can not meet the use requirement.
In order to reduce high-frequency vibration of an industrial pipeline and based on a magneto-rheological effect and a working mode under a shearing mode, the multi-excitation multi-disc magneto-rheological broadband vibration isolator using the composite magneto-rheological material is provided. The damping device has larger damping output under the medium-high frequency excitation, can generate the inhibition effect on the high-frequency vibration in all directions in the damping device, and solves the problem of high-frequency vibration isolation of industrial pipelines.
Disclosure of Invention
In view of this, the high frequency vibration damper of this technical scheme's operating band is wide, adopts the magneto-rheological damper of mode under the shearing mode to work, replaces the liquid medium with the compound base member magneto-rheological material based on non-woven fabrics, has replaced the liquid environment under the flow mode of working, can work under the condition of medium-high frequency, reduces the high frequency hardening effect, and damping force adjustable range is wide, response time is rapid, and anti subsidence performance is good, need not special seal structure, adopts compound base member magneto-rheological material based on non-woven fabrics, seal structure is simple, compact structure, the reliability is high, the energy consumption is less.
A multi-excitation multi-disk magneto-rheological broadband vibration isolator comprises an inner magnetic shoe, a fixed ring assembly, an outer magnetic shoe and a magneto-rheological assembly, wherein the inner magnetic shoe is sleeved on an industrial pipeline, the fixed ring assembly is coaxially arranged with the inner magnetic shoe, the outer magnetic shoe is sleeved on the fixed ring assembly, and the magneto-rheological assembly is arranged between the inner magnetic shoe and the outer magnetic shoe; the magneto-rheological assembly comprises an inner friction tile arranged on the inner magnetic tile, an outer friction tile arranged on the outer magnetic tile and a composite magneto-rheological sheet arranged between the inner friction tile and the outer friction tile; the industrial pipeline moves along the radial direction to drive the inner magnetic shoe to move so as to further enable the inner friction shoe to move along the radial direction.
Further, an inner annular groove for installing the inner friction shoe is formed in the outer circumference of the inner magnetic shoe, the inner annular grooves are multiple and are uniformly distributed along the axial direction, an outer annular groove for installing the outer friction shoe is formed in the inner wall of the outer magnetic shoe, and the outer annular grooves are multiple and are uniformly distributed along the axial direction.
Further, the inner friction tile and the outer friction tile are uniformly distributed at intervals, the inner friction tile and the outer friction tile are of arc-shaped structures, and the composite magneto-rheological sheet is attached between the inner friction tile and the outer friction tile.
Further, an inner metal rubber ring and an outer metal rubber ring are correspondingly arranged on the outer side wall of the inner magnetic shoe and the inner side wall of the outer magnetic shoe respectively; one end of the inner friction shoe is arranged in the outer ring groove, and the other end of the inner friction shoe is propped against and arranged on the outer metal rubber ring; one end of the outer friction shoe is arranged in the inner ring groove, and the other end of the outer friction shoe is propped against and arranged in the inner rubber ring.
Further, the section of the inner magnetic shoe along the radial direction is formed by surrounding a plurality of arc-shaped structures with the same structure, the inner magnetic shoe is mounted on the industrial pipeline in a fitting mode, and the outer magnetic shoe is mounted in the fixed ring assembly in a fitting mode.
Further, the winding post is arranged on the fixed ring component, the winding posts are a plurality of winding posts and are uniformly distributed on the fixed ring component, and the winding posts are wound with exciting coils.
Further, the retaining ring assembly includes upper and lower half rings of identical construction.
Further, the magnetorheological damper comprises an end cover assembly, wherein the end cover assembly comprises a left end cover and a right end cover which are used for axially limiting the magnetorheological assembly.
The beneficial effects of the invention are as follows:
1: the high-frequency vibration damper is rapid and convenient to install, and does not need to be installed in a stopping mode. The inner magnetic shoe adopts a multi-piece structure, and the inner friction shoe can be directly bonded or welded on the inner magnetic shoe and can be directly mounted on a working pipeline in a bolt connection and bonding mode; the exciting coil can be wound on the winding post firstly, and is applied to the pipeline from the outer side together with the fixing ring during installation and is locked by the screw.
2: The working frequency band is wide, the general magnetorheological damper adopts magnetorheological liquid as a working medium, most of working modes are flowing modes, a high-frequency hardening phenomenon can be generated under high-frequency excitation, the power indication curve can be severely distorted, and the energy consumption effect is greatly reduced. The magnetorheological damper working in the shearing mode is characterized in that a liquid medium is replaced by a composite matrix magnetorheological material based on non-woven fabrics, a liquid environment in a flowing working mode is replaced, the magnetorheological damper can work in a medium-high frequency condition, and the high-frequency hardening effect is reduced.
3: The damping force is large, the adjustable range of the damping force is wide, and the response time is quick. The composite magnetorheological material is adopted, the non-woven fabric is added as a material matrix, the adsorption rate is 1:10 or higher, the magnetorheological effect can be obviously improved, and the damping force can be increased. Meanwhile, the output damping force of the damper is influenced by the shearing stress of the working medium, and the damper has higher output damping force and dynamic range.
4: All-round shock attenuation of full spool piece. The fixed ring assembly is arranged on the industrial pipeline, and has an inhibition effect on all directions of vibration of all vibration points of the pipeline.
5: The whole structure is compact and the reliability is high.
6: The metal vibration damping rubber structure is adopted, damping force and elastic force are synchronously output, and the parallel vibration damping effect is achieved together with the magnetorheological material.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic view in radial cross section of the present invention;
FIG. 2 is a cross-sectional view of the invention A-A;
FIG. 3 is a schematic diagram of the magnetic field profile;
Fig. 4 is a schematic view of the installation of the present invention.
Detailed Description
FIG. 1 is a schematic view in radial cross section of the present invention; FIG. 2 is a cross-sectional view of the invention A-A; FIG. 3 is a schematic diagram of the magnetic field profile; FIG. 4 is a schematic view of the installation of the present invention; (the trend of the magnetic field is the arrow direction of fig. 3) as shown in the figure, the multi-excitation multi-disk magneto-rheological broadband vibration isolator comprises an inner magnetic shoe 8, a fixed ring assembly, an outer magnetic shoe 3 and a magneto-rheological assembly, wherein the inner magnetic shoe 8 is externally sleeved on an industrial pipeline 9, the fixed ring assembly is coaxially arranged with the inner magnetic shoe 8, the outer magnetic shoe 3 is internally sleeved on the fixed ring assembly, and the magneto-rheological assembly is arranged between the inner magnetic shoe and the outer magnetic shoe 3; the magneto-rheological assembly comprises an inner friction tile 12 arranged on the inner magnetic tile 8, an outer friction tile 11 arranged on the outer magnetic tile 3 and a composite magneto-rheological sheet 13 arranged between the inner friction tile and the outer friction tile; the industrial pipeline moves along the radial direction to drive the inner magnetic shoe to move so as to further enable the inner friction shoe to move along the radial direction; according to the technical scheme, the working frequency band of the high-frequency vibration damper is wide, the magnetorheological damper working in a shearing mode is adopted, a liquid medium is replaced by a composite matrix magnetorheological material based on non-woven fabrics, the liquid environment in a flowing working mode is replaced, the high-frequency vibration damper can work under the condition of medium and high frequency, the high-frequency hardening effect is reduced, the adjustable range of damping force is wide, the response time is rapid, the anti-sedimentation performance is good, the structure is compact, and the reliability is high.
In this embodiment, the outer circumference of the inner magnetic shoe 8 is provided with a plurality of inner ring grooves for installing the inner friction shoe 12, and the plurality of inner ring grooves are uniformly distributed along the axial direction (i.e. the axial direction of the industrial pipeline 9); an outer ring groove for installing the outer friction shoe 11 is formed in the inner wall of the outer magnetic shoe 3, and the outer ring grooves are multiple and uniformly distributed along the axial direction. The outer surface of the inner magnetic shoe 8 is provided with a ring groove structure for fixedly connecting and installing the inner friction shoe 12, and meanwhile, the inner wall of the outer magnetic shoe 3 is also provided with a ring groove structure for installing the outer friction shoe, the inner friction shoe and the outer friction shoe are arranged in parallel, a gap is reserved between the inner friction shoe and the outer friction shoe, the ring groove structure is used for installing the composite magneto-rheological sheet 13, and magneto-rheological shearing effect can be generated when the industrial pipeline 9 vibrates, so that the purpose of vibration reduction is realized.
In this embodiment, the inner friction tile 12 and the outer friction tile 11 are uniformly distributed at intervals, the inner friction tile 12 and the outer friction tile 11 are both arc-shaped structures, and the composite magnetorheological sheet 13 is laminated and arranged between the inner friction tile and the outer friction tile. The traditional magnetorheological fluid medium is replaced by the composite matrix magnetorheological material based on the non-woven fabric, so that the liquid environment in a flowing working mode is replaced, the magnetorheological fluid medium can work under the medium-high frequency condition, and the high-frequency hardening effect is reduced.
In this embodiment, an inner metal rubber ring 141 and an outer metal rubber ring 14 are correspondingly installed on the outer sidewall of the inner magnetic shoe 8 and the inner sidewall of the outer magnetic shoe 3, respectively; one end of the inner friction shoe 12 is arranged in the outer ring groove, and the other end of the inner friction shoe 12 is propped against and arranged on the outer metal rubber ring 14; one end of the outer friction shoe 11 is installed in the inner ring groove, and the other end of the outer friction shoe 11 is propped against and installed on the inner rubber ring 141. The inner metal rubber ring 141 and the outer metal rubber ring 14 have the same structure, and the vibration reduction effect is realized by matching with the installation of the inner friction shoe and the outer friction shoe, and the parallel vibration reduction mode of rubber vibration reduction and magnetorheological vibration reduction further improves the vibration reduction performance of the product.
In this embodiment, the cross section of the inner magnetic shoe 8 along the radial direction is formed by surrounding a plurality of arc structures with the same structure, the inner magnetic shoe 8 is mounted on an industrial pipeline in a fitting manner, and the outer magnetic shoe 3 is mounted in a fixed ring assembly in a fitting manner. The inner magnetic shoe 8 adopts a multi-piece structure, the inner friction shoe 12 can be directly bonded or welded on the inner magnetic shoe, and can be directly mounted on a working pipeline in a bolt connection and bonding mode, and the outer magnetic shoe 3 is also mounted in a matched manner with the fixed ring assembly in the same mounting mode.
In this embodiment, the winding post 1 is further installed on the fixed ring component, the winding posts 1 are multiple and uniformly distributed on the fixed ring component, and the exciting coil 15 is wound on the winding posts. The exciting coil can be wound on the winding post firstly, and is applied to the pipeline from the outer side together with the fixed ring assembly during installation and locked by the screw.
In this embodiment, the fixing ring assembly includes an upper half ring 3 and a lower half ring having the same structure. The fixed ring assembly can adopt a hoop structure, two identical semi-annular hoops are matched, and the fixed ring assembly is connected and locked through the bolts 6, so that the fixed ring assembly is simple in integral structure and convenient to install.
In this embodiment, the end cap assembly further comprises a left end cap 10 and a right end cap 16 for axially limiting the magnetorheological assembly.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (4)
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| CN202210441343.6A CN114962529B (en) | 2022-04-25 | 2022-04-25 | Multi-excitation multi-disk magneto-rheological broadband vibration isolator |
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| CN202210441343.6A CN114962529B (en) | 2022-04-25 | 2022-04-25 | Multi-excitation multi-disk magneto-rheological broadband vibration isolator |
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| CN119289007B (en) * | 2024-10-16 | 2025-09-16 | 重庆大学 | High-torque magnetorheological brake based on magnetorheological fluid internal circulation mode |
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