CN114961387A - Passive self-adaptive multi-direction wide-frequency-domain vibration isolation and reduction device - Google Patents
Passive self-adaptive multi-direction wide-frequency-domain vibration isolation and reduction device Download PDFInfo
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- CN114961387A CN114961387A CN202210581301.2A CN202210581301A CN114961387A CN 114961387 A CN114961387 A CN 114961387A CN 202210581301 A CN202210581301 A CN 202210581301A CN 114961387 A CN114961387 A CN 114961387A
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- 238000002955 isolation Methods 0.000 title claims abstract description 114
- 230000009467 reduction Effects 0.000 title claims abstract description 71
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 146
- 239000010959 steel Substances 0.000 claims abstract description 146
- 238000013016 damping Methods 0.000 claims abstract description 84
- 230000000670 limiting effect Effects 0.000 claims description 17
- 239000003190 viscoelastic substance Substances 0.000 claims description 13
- 230000003044 adaptive effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 11
- 230000005284 excitation Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
Abstract
The invention discloses a passive self-adaptive multi-direction wide-frequency-domain vibration isolation and reduction device which mainly comprises a viscoelastic vibration isolation and reduction support, a spring damping vibration isolation and reduction unit and a viscoelastic collision block, wherein the viscoelastic vibration isolation and reduction support is arranged on the viscoelastic collision block; specifically, the steel plate comprises an upper steel plate and a lower steel plate which are oppositely arranged, and a deformed steel plate between the upper steel plate and the lower steel plate; a viscoelastic vibration isolating and damping support is arranged between the special-shaped steel plate and the lower steel plate, and a viscoelastic collision block is arranged on the outer side of the viscoelastic vibration isolating and damping support in a surrounding manner; the viscoelastic vibration isolation and reduction block and the spring vibration isolator which is uniformly distributed around the viscoelastic vibration isolation and reduction block are arranged between the upper steel plate and the deformed steel plate, and the upper end and the lower end of the spring vibration isolator are respectively and fixedly connected with the upper steel plate and the deformed steel plate. The invention can adaptively excite the form to trigger the corresponding working mechanism in a wider frequency range, effectively isolate and damp/shake control in the horizontal direction and the vertical direction, improve the multi-direction isolate and damp/shake performance, improve the lateral stability of the device, and have excellent performance and high robustness.
Description
Technical Field
The invention relates to a vibration isolating and reducing device, in particular to a passive self-adaptive vibration isolating and reducing device with multidirectional wide frequency domain.
Background
China is in the Pacific earthquake zone, belongs to the countries with frequent earthquakes, most building structures need to be subjected to earthquake-proof design aiming at horizontal earthquake disasters, and for important building facilities and irregular buildings, the vertical earthquake action needs to be considered. In addition, with the rapid development of national rail transit, vibration excitation generated by rail transit operation gradually becomes a vibration disaster mode affecting building structures. Due to the combination of different excitations, the structure is often influenced by vibration in multiple directions and wide frequency domains, so that the problems of reduction of the safety, usability and comfort of the structure and the like are caused, and how to reduce the complex and variable vibration effect becomes an important subject. Structural vibration control is a new type of anti-vibration measure that dissipates or isolates vibration energy by providing vibration dampening or isolation devices in the structure, or that applies external energy to counteract the effects of external excitation on the structure. Vibration isolation and reduction devices, as a common form of passive vibration control, have the advantages of relatively simple construction, no need for manual intervention, high robustness and stability, and are widely used.
The traditional multidimensional vibration isolation and reduction device is not ideal for controlling multi-directional vibration. In the field of building shock isolation, the contradiction that the structure needs enough vertical bearing capacity and lower shock isolation rigidity is difficult to be coordinated exists. In the field of rail vibration control, vibration generated by subway operation has a very wide frequency band, and the problem that the vibration isolation of a full frequency band is difficult to realize by only depending on a vibration isolation device is easily caused, so that a high frequency band of a building is excited after vibration isolation, or the vibration frequency band of a low frequency band is not isolated yet. In addition, the traditional multidimensional vibration isolation and reduction device has low damping and almost no energy consumption capability, so that the displacement of a structural vibration isolation layer is overlarge. In addition to the above problems, in order to realize multi-directional vibration isolation, the device often has a high height, and it is difficult to satisfy the form factor requirement, and although the control effect is theoretically realized, the problem of poor lateral stability greatly limits practical application.
In view of the problems of vibration isolation and reduction devices, it is an effective measure to apply viscoelastic damping materials to devices to improve energy consumption capability. The viscoelastic damping material is an effective high-energy-consumption damping material, and has two deformation mechanisms of elasticity and viscosity under the action of external force. By selecting a suitable viscoelastic damping material, a high damping can be obtained over a wide frequency band. And then through the design of the device mechanism, multi-directional vibration isolation and reduction control is realized, and the lateral stability of the device is ensured. Therefore, the invention provides a passive self-adaptive multi-direction wide-frequency-domain vibration isolation and reduction/vibration device, which realizes effective vibration control under multi-direction wide-frequency-domain dynamic excitation and improves the structural vibration characteristic, and is necessary and has great engineering application prospect.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects in the prior art, the invention provides a passive self-adaptive multi-direction wide-frequency-domain vibration isolating and damping device, which can self-adaptively excite a form to trigger a corresponding working mechanism in a wider frequency range, effectively control vibration isolating and damping in the horizontal direction and the vertical direction, improve the multi-direction vibration isolating and damping performance, improve the lateral stability of the device and have excellent performance and high robustness.
The technical scheme is as follows: a passive self-adaptive multi-direction wide frequency domain vibration isolating and damping device comprises a spring damping vibration isolating and damping unit, a viscoelastic vibration isolating and damping unit and a deformed steel plate, wherein the spring damping vibration isolating and damping unit is connected with the viscoelastic vibration isolating and damping unit through the deformed steel plate, the spring damping vibration isolating and damping unit comprises an upper steel plate, a viscoelastic vibration isolating and damping block coaxially arranged between the upper steel plate and the deformed steel plate and spring vibration isolators symmetrically distributed around the viscoelastic vibration isolating and damping block, the upper end and the lower end of the viscoelastic vibration isolating and damping block are respectively vulcanized and bonded with the upper steel plate and the deformed steel plate into a whole, the upper end and the lower end of each spring vibration isolator are respectively fixedly connected with the upper steel plate and the deformed steel plate, the viscoelastic vibration isolating and damping unit comprises a lower steel plate, a viscoelastic vibration isolating and damping support coaxially arranged between the lower steel plate and the deformed steel plate and a limiting device symmetrically distributed around the viscoelastic vibration isolating and damping support, the upper end and the lower end of the viscoelastic vibration isolating and damping support are fixedly connected with the deformed steel plate and the lower steel plate respectively, and the limiting device is fixedly connected with the lower steel plate.
According to the invention, the spring damping vibration isolation and reduction unit and the viscoelastic vibration isolation and reduction unit are arranged in series, compared with the existing vibration isolation and reduction device arranged in parallel, the multi-directional vibration isolation and reduction effect of the device is greatly improved, the horizontal vibration isolation and reduction of the device is mainly realized by the viscoelastic vibration isolation and reduction support, the viscoelastic vibration isolation and reduction support can provide lower vibration isolation rigidity in the horizontal direction, and the viscoelastic material can dissipate part of energy in the deformation process, so that both vibration isolation and vibration reduction can be realized; the vertical stiffness is provided by the viscoelastic vibration isolating and damping support at the lower part and the spring damping vibration isolating and damping unit at the upper part together; the design of the limiting device aims at providing stroke restraint when large horizontal deformation, longitudinal deformation or lateral deformation is carried out, and meanwhile, a collision energy consumption mechanism is started, so that large displacement can be restrained smoothly, and collision energy consumption is realized.
Furthermore, in order to realize the vertical vibration isolation and reduction effect and the lateral stability of the device, the special-shaped steel plate is a special-shaped steel plate with the middle part of the cross section being convex upwards and the two sides being concave downwards, and the spring vibration isolators are uniformly distributed on the concave platform of the special-shaped steel plate around the viscoelastic vibration isolation and reduction blocks.
Furthermore, in order to enable the limiting device to have a better limiting effect, the limiting device is a viscoelastic collision block, the viscoelastic collision block and the lower steel plate are vulcanized and bonded into a whole, and a rigid limiting block fixedly connected with the lower steel plate is arranged in the viscoelastic collision block.
Furthermore, in order to ensure that the device can effectively realize vibration isolation and reduction, deformation spaces are reserved between the lower end face of the concave platform of the deformed steel plate and the upper end face of the viscoelastic collision block.
Furthermore, in order to realize that the concave platform of the deformed steel plate can fall on the viscoelastic collision block and realize effective energy consumption under the working condition of extreme large stroke, the projection of the outer edge of the concave platform of the deformed steel plate is positioned on the upper end surface of the viscoelastic collision block.
Furthermore, in order to realize the periodic vibration isolation of the viscoelastic vibration isolation and reduction block, a unit cell layout is constructed, and holes are formed in the viscoelastic vibration isolation and reduction block in a periodic distribution mode.
Furthermore, in order to realize that the device can uniformly bear force and consume energy in multiple directions during horizontal displacement under the working condition of maximum large stroke, the viscoelastic collision blocks are uniformly distributed on the periphery of the surrounding viscoelastic vibration isolation and reduction support.
Furthermore, in order to realize more effective horizontal vibration isolation, the viscoelastic vibration isolation support comprises an upper connecting steel plate, a lower connecting steel plate, and a viscoelastic material layer and a steel plate layer which are sequentially and alternately overlapped between the upper connecting steel plate and the lower connecting steel plate, the viscoelastic vibration isolation support is fixedly connected with the deformed steel plate and the lower steel plate through the upper connecting steel plate and the lower connecting steel plate respectively, and the upper connecting steel plate, the lower connecting steel plate and the steel plate layer are vulcanized and bonded into a whole through the viscoelastic material layer.
Furthermore, in order to improve the lateral resistance of the spring shock absorber, a threaded sleeve corresponding to the upper end face of the lower end face of the upper steel plate and the upper end face of the lower concave platform of the deformed steel plate is arranged, internal threads are arranged at one end, close to the upper steel plate and the deformed steel plate, of the threaded sleeve, the inner diameter of the other end of the threaded sleeve is larger than the inner diameter of the threads, and the threaded sleeve is in threaded connection with the spring shock absorber.
Furthermore, in order to realize the overall bonding stability of the device, the upper steel plate, the special-shaped steel plate, the lower steel plate, the upper connecting steel plate and the lower connecting steel plate are connected with the viscoelastic damping material by rough surfaces or grooves for vulcanization bonding.
Has the advantages that: the passive self-adaptive multi-direction wide-frequency-domain vibration isolating and damping device can trigger a corresponding working mechanism in a self-adaptive excitation form in a wide frequency range, realize effective vibration control in multiple directions, ensure performance robustness and structural stability, and is specifically shown in the following aspects:
firstly, the horizontal vibration isolation and reduction of the device is mainly realized by a viscoelastic vibration isolation and reduction support, the viscoelastic vibration isolation and reduction support can provide lower vibration isolation rigidity in the horizontal direction, and the viscoelastic material layer can dissipate part of energy in the deformation process, so that the vibration isolation and reduction can be realized.
Secondly, the vertical stiffness of the device is provided by the viscoelastic vibration isolation and reduction support at the lower part and the spring damping vibration isolation and reduction unit at the upper part together. Compare in traditional vibration isolation support, set up protruding type different structure steel sheet, reduced the total height of device simultaneously greatly under the vertical rigidity circumstances, compromise vertical vibration damping effect and the lateral stability of device.
Thirdly, the viscoelastic damping block in the spring damping vibration isolation and reduction unit can be a solid viscoelastic material block or a viscoelastic material block with periodically distributed holes arranged inside, and the purpose of the block is to provide rigidity and damping and increase lateral stability. In addition, it is worth explaining that the periodic vibration isolation of the specific frequency band of the block is finally realized by designing the form and distribution of the holes inside the block and constructing the unit cell layout, and the periodic vibration isolation has important significance for improving the low-frequency vertical vibration isolation effect.
Fourthly, the device of the invention is designed and researched for the whole stability. The overall stability of the device is achieved primarily through two design configurations: (1) the spring damping vibration isolation and reduction unit is of a deformed steel plate structure with a convex middle part and concave two sides, so that the overall vertical height of the device can be effectively reduced, and the device is ensured to have better lateral stability; (2) the design of the viscoelastic collision block aims at providing stroke restraint when large horizontal deformation, longitudinal deformation or lateral deformation occurs, and meanwhile, a collision energy consumption mechanism is started, so that large displacement can be restrained smoothly, and collision energy consumption is realized.
Fifthly, the device realizes self-adaptive vibration isolation and reduction control under multi-direction wide-frequency-domain excitation, under different excitation states, the viscoelastic vibration isolation and reduction support at the bottom enters a working state under horizontal excitation, the viscoelastic vibration isolation and reduction support at the bottom and the upper spring damping vibration isolation and reduction unit provide vibration isolation rigidity and damping energy consumption under vertical excitation, and the viscoelastic vibration isolation and reduction support and the upper spring damping vibration isolation and reduction unit enter a collision constraint mechanism under large displacement. Each mechanism of the device enters a corresponding working mechanism in a self-adaptive mode under different excitation states to work cooperatively.
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a front sectional view of a passive adaptive multi-directional wide-frequency-domain vibration isolation and reduction device according to the present invention.
FIG. 2 is a schematic view of the joint between the viscoelastic material of the present invention and a steel structure.
FIG. 3 is a top sectional view of a passive adaptive multi-directional wide frequency range vibration isolation and damping device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, a passive adaptive multi-directional wide-frequency-domain vibration isolation and reduction device comprises a spring damping vibration isolation and reduction unit 1, a viscoelastic vibration isolation and reduction unit 2 and a deformed steel plate 3, wherein the spring damping vibration isolation and reduction unit 1 is connected with the viscoelastic vibration isolation and reduction unit 2 through the deformed steel plate 3, the spring damping vibration isolation and reduction unit 1 comprises an upper steel plate 11, a viscoelastic vibration isolation and reduction block 12 coaxially installed between the upper steel plate 11 and the deformed steel plate 3 and spring vibration isolators 13 symmetrically distributed around the viscoelastic vibration isolation and reduction block 12, and holes are periodically distributed in the viscoelastic vibration isolation and reduction block 12; the lower end face of the upper steel plate 11 and the upper end face of the concave platform of the deformed steel plate 3 are provided with threaded sleeves 14 corresponding in position, one ends of the threaded sleeves 14, which are close to the upper steel plate 11 and the deformed steel plate 3, are provided with internal threads, the inner diameter of the other ends of the threaded sleeves is larger than the inner diameter of the threads, and the threaded sleeves 14 are connected with the spring vibration isolators 13 through threads; the upper end and the lower end of the viscoelastic vibration isolation and reduction block 12 are respectively vulcanized and bonded with the upper steel plate 11 and the deformed steel plate 3 into a whole; the special-shaped steel plate 3 is a special-shaped steel plate 3 with a convex middle part and concave two sides.
The viscoelastic vibration isolating and damping unit 2 comprises a lower steel plate 21, a viscoelastic vibration isolating and damping support 22 coaxially arranged between the lower steel plate 21 and the deformed steel plate 3 and limiting devices symmetrically distributed around the viscoelastic vibration isolating and damping support 22, wherein the viscoelastic vibration isolating and damping support 22 comprises an upper connecting steel plate 221, a lower connecting steel plate 222, a viscoelastic material layer 223 and a steel plate layer 224, the viscoelastic material layer 223 and the steel plate layer 224 are sequentially and alternately overlapped between the upper connecting steel plate 221 and the lower connecting steel plate 222, the viscoelastic vibration isolating and damping support 22 is fixedly connected with the deformed steel plate 3 and the lower steel plate 21 through the upper connecting steel plate 221 and the lower connecting steel plate 222 respectively, and the upper connecting steel plate 221, the lower connecting steel plate 222 and the steel plate layer 224 are vulcanized and bonded into a whole through the viscoelastic material layer 223; the limiting device is a viscoelastic impact block 23, the viscoelastic impact block 23 and the lower steel plate 21 are vulcanized and bonded into a whole, and a rigid limiting block 24 fixedly connected with the lower steel plate 21 is arranged in the viscoelastic impact block 23.
As shown in fig. 2, the connection surfaces of the upper steel plate 11, the deformed steel plate 3, the lower steel plate 21, the upper connection steel plate 221, and the lower connection steel plate 222 and the viscoelastic damping material are all rough surfaces or grooves for vulcanization adhesion.
As shown in fig. 3, the viscoelastic impact mass 23 is uniformly distributed around the periphery of the viscoelastic vibration isolating and damping mount 22; the spring vibration isolators 13 are uniformly distributed on the concave platform of the deformed steel plate 3 around the viscoelastic vibration isolation and reduction blocks 12.
According to the invention, the spring damping vibration isolation and reduction unit 1 and the viscoelasticity vibration isolation and reduction unit 2 are connected in series through the design of the special-shaped steel plate 3, so that the vertical height of the whole device can be effectively reduced, the device is ensured to have better lateral stability, and the vibration isolation and reduction effect of the whole device can be improved; the viscoelastic collision blocks 23 uniformly distributed around the viscoelastic vibration isolation and reduction support 22 are arranged, so that the vertical and horizontal limiting functions can be effectively realized, and stroke constraint is provided under the working condition of a limit large stroke.
A deformation space is reserved between the lower end surface of the concave platform of the special-shaped steel plate 3 and the upper end surface of the viscoelastic collision block 23; the projection of the outer edge of the concave platform of the special-shaped steel plate 3 is positioned on the upper end surface of the viscoelastic impact block 23.
According to different practical applications, deformation spaces reserved between the lower end face of the concave platform of the deformed steel plate 3 and the upper end face of the viscoelastic collision block 23, and the distance between the projection of the outer edge of the concave platform of the deformed steel plate 3 on the viscoelastic collision block and the edge line of the viscoelastic collision block need to be determined jointly according to vertical deformation limit values, lateral stability limit values and the like under different working conditions.
The working principle of the device comprises the following aspects:
the passive self-adaptive multi-direction wide-frequency-domain vibration isolating and damping device can simultaneously realize horizontal and vertical vibration isolating and damping control. The control of the device on the horizontal vibration excitation is mainly realized by the bottom viscoelastic vibration isolation and reduction support. The control of the device on the vertical vibration excitation is mainly realized through the vertical spring damping vibration isolation and reduction unit 1, and certainly, the vertical vibration isolation rigidity is reduced by the viscoelastic vibration isolation and reduction support 22, so that the vertical vibration isolation performance is further improved. The device triggers a corresponding working mechanism according to the normal working stroke or the limit large stroke state, and the vibration control effectiveness and the working stability of the device are ensured.
Under the normal working stroke: when the device is subjected to the action of horizontal vibration, the viscoelastic vibration isolating and damping support 22 has lower horizontal rigidity, and the viscoelastic material layer 223 and the steel plate layer 224 laminated inside the viscoelastic vibration isolating and damping support generate shearing deformation, so that the vibration isolating purpose is achieved, and energy can be dissipated. When the device is subjected to the vertical vibration action, the spring damping vibration isolation and reduction unit which is mainly composed of the spring vibration isolator 13 and the viscoelastic vibration isolation and reduction block 12 has smaller vertical rigidity, and the viscoelastic vibration isolation and reduction block 12 dissipates energy by generating compression deformation; through the design of the form and distribution of the holes inside the viscoelastic vibration isolation and reduction block 12, a unit cell layout is constructed, periodic vibration isolation of a specific frequency band of the block can be realized, and the vertical vibration isolation effect of a low-frequency band is further improved.
Under the limit large stroke: when the device is subjected to a larger horizontal vibration effect, the viscoelastic vibration isolating and damping support 22 is deformed horizontally and greatly and abuts against the viscoelastic collision blocks 23 arranged on the periphery, collision energy consumption is generated, the horizontal deformation of the viscoelastic vibration isolating and damping support 22 is restrained, and the viscoelastic collision blocks 23 can be internally provided with rigid limit blocks 24 which are fixed on the lower steel plate 21 and extend into the viscoelastic collision blocks 23 so as to enhance the limiting capacity. When the device is subjected to a large vertical vibration effect, the spring vibration isolator 13, the viscoelastic vibration isolating and damping block 12 and the viscoelastic vibration isolating and damping support 22 in the spring damping vibration isolating and damping unit 1 are vertically deformed, and the deformed steel plate 3 abuts against the viscoelastic collision block 23 to generate soft collision. In this process, the viscoelastic impact mass 23 can act as a dissipative energy and vertical stop. When the device is in the most unfavorable state of horizontal direction, vertical, great horizontal sidesway and vertical displacement take place for the device simultaneously, require reasonable setting viscoelastic collision piece 23's position according to vertical deformation limit value and side direction stability limit value etc. guarantee that viscoelastic collision piece 23 consumes energy and limit function under the two-way collision.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A passive self-adaptive multi-direction wide frequency domain vibration isolation and damping device is characterized in that: including spring damping vibration isolation unit (1), viscoelasticity vibration isolation unit (2) and deformed steel plate (3), spring damping vibration isolation unit (1) is connected with viscoelasticity vibration isolation unit (2) through deformed steel plate (3), spring damping vibration isolation unit (1) includes steel sheet (11), coaxial arrangement in last steel sheet (11) and deformed steel plate (3) between viscoelasticity vibration isolation piece (12) and spring isolator (13) around viscoelasticity vibration isolation piece (12) symmetric distribution, viscoelasticity vibration isolation piece (12) upper and lower both ends are vulcanized and are bonded as an organic whole with last steel sheet (11) and deformed steel plate (3) respectively, spring isolator (13) upper and lower both ends respectively with last steel sheet (11) and deformed steel plate (3) fixed connection, viscoelasticity vibration isolation unit (2) is including lower steel sheet (21), coaxial arrangement in lower steel sheet (21) and deformed steel plate (3) between viscoelasticity vibration isolation support (22) with separate vibration damping support (22) with special steel plate (3) And the limiting devices are symmetrically distributed around the viscoelastic vibration isolation and reduction support (22), the upper end and the lower end of the viscoelastic vibration isolation and reduction support (22) are respectively and fixedly connected with the special-shaped steel plate (3) and the lower steel plate (21), and the limiting devices are fixedly connected with the lower steel plate (21).
2. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the spring vibration isolators (13) surround the viscoelastic vibration isolation and reduction blocks (12) and are uniformly distributed on concave platforms of the special-shaped steel plates (3).
3. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the limiting device is a viscoelastic collision block (23), the viscoelastic collision block (23) and the lower steel plate (21) are vulcanized and bonded into a whole, and a rigid limiting block (24) fixedly connected with the lower steel plate (21) is arranged in the viscoelastic collision block (23).
4. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 3, wherein: and a deformation space is reserved between the lower end surface of the concave platform of the special-shaped steel plate (3) and the upper end surface of the viscoelastic collision block (23).
5. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 3, wherein: the outer edge projection of the concave platform of the special-shaped steel plate (3) is positioned on the upper end face of the viscoelastic impact block (23).
6. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the viscoelastic vibration isolating and damping block (12) is internally provided with holes which are periodically distributed.
7. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the viscoelastic impact blocks (23) are uniformly distributed around the periphery of the viscoelastic vibration isolating and damping support (22).
8. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the viscoelastic vibration isolation and reduction support (22) comprises an upper connecting steel plate (221), a lower connecting steel plate (222), and a viscoelastic material layer (223) and a steel plate layer (224) which are sequentially and alternately stacked between the upper connecting steel plate (221) and the lower connecting steel plate (222), wherein the viscoelastic vibration isolation and reduction support (22) is fixedly connected with a special-shaped steel plate (3) and a lower steel plate (21) through the upper connecting steel plate (221) and the lower connecting steel plate (222), and the upper connecting steel plate (221), the lower connecting steel plate (222) and the steel plate layer (224) are vulcanized and bonded into a whole through the viscoelastic material layer (223).
9. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: go up under steel sheet (11) terminal surface and the concave platform's of deformed steel board (3) up end and be provided with threaded sleeve (14) that the position corresponds, threaded sleeve (14) are being close to last steel sheet (11) and deformed steel board (3) one end and are being equipped with the internal thread, and the internal diameter of the other end is greater than the thread internal diameter, threaded sleeve (14) pass through threaded connection with spring isolator (13).
10. The passive adaptive multi-directional wide frequency domain vibration isolation and damping device according to claim 1, wherein: the connecting surfaces of the upper steel plate (11), the special-shaped steel plate (3), the lower steel plate (21), the upper connecting steel plate (221), the lower connecting steel plate (222) and the viscoelastic damping material are all rough surfaces or grooves for vulcanization bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106836925A (en) * | 2016-12-28 | 2017-06-13 | 东南大学 | A kind of multi-direction wide frequency domain every vibration damping/shake device |
| CN107130831A (en) * | 2017-05-25 | 2017-09-05 | 东南大学 | A kind of thick viscoelastic layer in multidimensional corrugated is every vibration damping/shake device |
| CN107605060A (en) * | 2017-08-29 | 2018-01-19 | 东南大学 | One kind is vertically cooperateed with every vibration damping/shake device and its application method |
| CN114412260A (en) * | 2022-01-20 | 2022-04-29 | 东南大学 | High-damping multi-direction wide-frequency-domain anti-pulling shock-isolating and damping device and shock-isolating and damping method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836925A (en) * | 2016-12-28 | 2017-06-13 | 东南大学 | A kind of multi-direction wide frequency domain every vibration damping/shake device |
| CN107130831A (en) * | 2017-05-25 | 2017-09-05 | 东南大学 | A kind of thick viscoelastic layer in multidimensional corrugated is every vibration damping/shake device |
| CN107605060A (en) * | 2017-08-29 | 2018-01-19 | 东南大学 | One kind is vertically cooperateed with every vibration damping/shake device and its application method |
| CN114412260A (en) * | 2022-01-20 | 2022-04-29 | 东南大学 | High-damping multi-direction wide-frequency-domain anti-pulling shock-isolating and damping device and shock-isolating and damping method |
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