CN109537757A - A kind of multidimensional vibration reduction damper based on Stewart mechanism - Google Patents
A kind of multidimensional vibration reduction damper based on Stewart mechanism Download PDFInfo
- Publication number
- CN109537757A CN109537757A CN201811537148.3A CN201811537148A CN109537757A CN 109537757 A CN109537757 A CN 109537757A CN 201811537148 A CN201811537148 A CN 201811537148A CN 109537757 A CN109537757 A CN 109537757A
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- China
- Prior art keywords
- ring flange
- connection otic
- damping element
- vibration reduction
- universal shaft
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- 230000009467 reduction Effects 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 title claims abstract description 13
- 238000013016 damping Methods 0.000 claims abstract description 56
- 230000003313 weakening effect Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- E04H9/14—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 against other dangerous influences, e.g. tornadoes, floods
Abstract
The invention discloses a kind of multidimensional vibration reduction dampers based on Stewart mechanism, including ring flange, connection otic placode and damping element, ring flange is provided with two panels, and there are three connection otic placodes for arrangement setting triangular in shape on every ring flange, and connection otic placode is equidistant away from the axial line of ring flange；Wherein each connection otic placode on a piece of ring flange is connect by two damping elements with two connection otic placodes on other a piece of ring flange, damping element is from left to right successively made of the first crossed universal shaft, first connecting rod, piston rod, damping element cylinder body, the second connecting rod and the second crossed universal shaft, piston rod is telescopic to be movably connected on damping element cylinder body, and the first crossed universal shaft and the second crossed universal shaft pass through bearing and connect with connection otic placode.The present invention realizes multidimensional vibration reduction using less damping element, it is made also to be able to bear multidimensional internal force caused by Complicated Loads while providing high additional damping, achievees the effect that carry out multidimensional vibration reduction to large-span space structure.
Description
Technical field
The invention belongs to antivibration areas, and in particular to a kind of high-performance multidimensional vibration reduction resistance based on Stewart mechanism
Buddhist nun's device can be applied to the control of large-span space structure vibration damping.
Background technique
With the raising increasingly of science and technology maked rapid progress and the people need good life, people are to building span
More stringent requirements are proposed；In this context, large-span space structure is able to fast development, and becomes the heat of structural engineering field
Point.Large-span space structure the earthquake, wind shake the effects of under structural dynamic response it is strong.The power for how reducing structure is rung
It answers, improve the antidetonation of structure, wind loading rating and combats a natural disaster performance, become current urgent problem to be solved.The side of traditional antidetonation
Method is to improve structural behaviour, and wind shake, rain vibration, ambient vibration and geological process etc. are absorbed by the energy dissipation capacity of structure itself
Generated energy；This method will affect space and the requirement of building, and lack capacity of self-regulation, in medium and small shake
And the non-lower effect that can also play the role of certain reduction structural dynamic response of high wind effect, but under macroseism or high wind,
It will necessarily cause the damage or destruction of structure division component.It therefore, is the defect for overcoming traditional anti-shock methods, structural vibration control
Technology is gradually risen, and damper is widely used in the structural vibration reduction field of civil engineering.Resistance on the market at present
The tension and compression that Buddhist nun's device vibration absorber is mostly only capable of resisting one-dimensional square act on, the vibration damping of supporting member suitable for structure, and main
Applied to executive information systems；It is different from high-rise, in super-high building structure supporting member, large-span space structure its
Structural response has apparent multidimensional characteristic；For the large span spatial structure of single layer mesh form, structure structure
Part is usually by " moment of flexure-axle power " multidimensional internal force compound action；I.e. under wind shake, rain vibration, ambient vibration and geological process, single layer
Its rod piece of the large span spatial structure of grid configuration is not only acted on by axle power, also suffers from Moment；Only have and resists one-dimensional square
The damper acted on to tension and compression will can not achieve oscillation damping and energy dissipating of the component under complicated applied force state, not be suitable for long-span space knot
Structure.Current existing damper vibration damping device is difficult to meet the vibration control requirement of large-span space structure.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of multidimensional based on Stewart mechanism
Damper, the present invention realize multidimensional vibration reduction using less damping element, it are made also while providing high additional damping
Multidimensional internal force caused by Complicated Loads is enough born, achievees the effect that carry out multidimensional vibration reduction to large-span space structure.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of multidimensional vibration reduction damper based on Stewart mechanism, including ring flange, connection otic placode and damping element, institute
It states ring flange and is provided with two panels, arrangement setting triangular in shape is there are three the connection otic placode on every ring flange, and connection otic placode
Axial line away from ring flange is equidistant；Wherein each connection otic placode on a piece of ring flange by two damping elements with
In addition on a piece of ring flange two connection otic placodes connection, the damping element from left to right successively by the first crossed universal shaft,
First connecting rod, piston rod, damping element cylinder body, the second connecting rod and the second crossed universal shaft composition, the piston rod can be stretched
Contracting is movably connected on the damping element cylinder body, first crossed universal shaft and the second crossed universal shaft pass through bearing with
Connection otic placode connection.
Further, the plagiohedral structure or inclined-plane is had by a pair that each connection otic placode uses the high two sides in middle part low
Convex block constitute.
Further, the first crossed universal shaft on each damping element, first connecting rod, piston rod, damping member
Part cylinder body, the second connecting rod and the second crossed universal shaft all have identical axial line.
Further, the control and weakening of multidimensional vibration reduction damper low-frequency excitation suitable for 0-20Hz.
Further, the multidimensional vibration reduction damper can any angle arrangement.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
The parallel connection for realizing more damping elements in smaller space is realized multidimensional vibration reduction using less damping element, is relatively passed
System damper, which is compared, can provide higher additional damping；It is internal to form one with ring flange per two adjacent damping elements
Stable geometrically stable system makes damper that a stable structural system be integrally formed, so as to bear Complicated Loads institute
The internal force of all directions of generation；Structure is simple, easy for construction, is suitable for large-span space structure.
Detailed description of the invention
Fig. 1 is three dimensional structure diagram of the invention；
Fig. 2 is flat state schematic diagram of the invention；
Fig. 3 is damping element three dimensional structure diagram of the invention；
Fig. 4 is the three dimensional structure diagram of connection otic placode of the invention
Marked in the figure: 1, ring flange；2, connection otic placode；3, crossed universal shaft；4, connecting rod；5, piston rod；6, damping member
Part cylinder body；7, bearing.
Specific embodiment
In order to make advantages and features of the invention be easier to be understood, below with reference to technical solution and attached drawing in fact
The mode of applying is described in detail.
Multidimensional vibration reduction damper proposed by the present invention is as shown in Figures 1 to 4, including ring flange 1, connection otic placode 2, cross ten thousand
To axis 3, connecting rod 4, piston rod 5, damping element cylinder body 6；Bearing 7；Ring flange 1 is total to two panels, and connection otic placode 2 totally six；Every
Three connection otic placodes 2 are arranged on ring flange 1, the distribution triangular in shape of three connection otic placodes 2 arranged on ring flange 1, and away from flange
1 axial line of disk is equidistant；Crossed universal shaft 3, connecting rod 4, piston rod 5,6 coaxial inner conductor of damping element cylinder body arrangement, altogether
With composition damping element, the sequence from left to right arranged is followed successively by crossed universal shaft 3, connecting rod 4, piston rod 5, damping element cylinder
Body 6, connecting rod 4, crossed universal shaft 3；Internally-damped element totally six, each damping element passes through connection otic placode and is arranged in two
Between piece ring flange；Bearing 7 connects between damping element and connection otic placode 2 with the two.
In the present embodiment, the upper surface of connection otic placode 2 is set as the low plagiohedral structure in the high two sides in middle part, wherein a piece of method
Two inclined-planes of each connection otic placode 2 on blue disk are separately connected one end of two damping elements, the two damping elements it is another
One end is connect with two connection otic placodes on other a piece of ring flange, and so on, finally constitute multidimensional of the present invention as shown in Figure 1
The three dimensional structure diagram of damper.
Specifically, per two adjacent internally-damped elements a stable geometry unchanged body can be formed with ring flange
System, makes damper that a stable structural system be integrally formed, so that damper is able to bear caused by Complicated Loads
Multidimensional internal force.
Specifically, damping element is connect with connection otic placode using crossed universal shaft and bearing in the present embodiment；Tradition
The connection type of Stewart platform mechanism is that side is flexural pivot link, and the other side is that flexible Hooke is hinged；The present invention and tradition
Connection it is different.
Specifically, the crossed universal shaft, connecting rod, piston rod, damping element cylinder body on each damping element are with identical
Axial line.Being equivalent to each rod piece has oneself a local coordinate system, is arranged along the axial line of oneself.Due to
The both ends of internal each damping element are crossed universal shafts, so moment of flexure can discharge；So at any time, multidimensional subtracts
Each damping element of vibration damper will not bend, and each damping element of multidimensional vibration reduction damper can be along oneself
Axial line movement.Releasable horizontal direction moment of flexure and the Vertical Square as caused by external multi-dimensional complicated load of crossed universal shaft
To moment of flexure；The releasable torque as caused by external multi-dimensional complicated load of bearing.
Specifically, damping element is viscous damping element.For the large-span space structure for meeting different form, different size
Vibration damping demand, viscous damping element can also stretch material and shape memory alloy material etc. with visco-elastic element and mangneto and be made
Damping element be replaced, and preferably viscoelastic damping element be replaced.
Specifically, multidimensional vibration reduction damper of the present invention is mainly used in building vibration damping field, it is suitable for centering low-frequency excitation
The control and weakening of (0-20Hz).
Specifically, its structure type of multidimensional vibration reduction damper of the present invention is full symmetric structure, in a manner of replacing member
It is arranged on the rod piece position of long-span space building superstructure；Crossed universal shaft adds bearing that can be equivalent to flexural pivot, can discharge
Three-dimensional rotation；The vertical placement that traditional Stewart platform mechanism can only be fixed, and the present invention can be arranged with any angle.In machine
Tool manufacturing field or aerospace field, the Related product of the structure type are all progress shock insulation, institute in the form of shock insulation platform
Can only vertically place；It and is to pass through the movement of whole device, inside using whole device as dissipative damping device in the present invention
Each damping element consumes energy, to reduce vibration, it is possible to which the rod piece in replacing structure is determined according to the position of rod piece
The position of multidimensional vibration reduction damper.
Multidimensional vibration reduction damper of the present invention can have certain rigidity, and rigidity size is determined by the rigidity of internally-damped element
It is fixed；It is internal to form a stable geometrically stable system with ring flange per two adjacent damping elements, make multidimensional vibration reduction
A stable structural system is integrally formed in damper；Due to the releasable three-dimensional rotation in the both ends of damping element, so multidimensional
Damper itself can bear " moment of flexure-axle power " multidimensional internal force compound action, and under multidimensional internal force compound action, multidimensional
The mass motion of damper can decouple the axial movement for being converted into internally-damped element itself.So multidimensional vibration reduction damper
There is the multidimensional rigidity such as axial, bending when by Static behavior, certain load is able to bear under multidimensional Static behavior, thus
It reduces because replacing member is weakening caused by structure；Under power effect, effective multidimensional can be provided for large span spatial structure and subtracted
Vibration.
The present invention is not limited to embodiments described above.Above the description of specific embodiment is intended to describe and say
Bright technical solution of the present invention, the above mentioned embodiment is only schematical, is not restrictive.This is not being departed from
In the case of invention objective and scope of the claimed protection, those skilled in the art may be used also under the inspiration of the present invention
The specific transformation of many forms is made, within these are all belonged to the scope of protection of the present invention.
Claims (5)
1. a kind of multidimensional vibration reduction damper based on Stewart mechanism, which is characterized in that including ring flange, connection otic placode and resistance
Buddhist nun's element, the ring flange are provided with two panels, and there are three the connection otic placodes for arrangement setting triangular in shape on every ring flange, and
Connection otic placode is equidistant away from the axial line of ring flange；Wherein each connection otic placode on a piece of ring flange passes through two resistances
Buddhist nun's element is connect with two connection otic placodes on other a piece of ring flange, and the damping element is from left to right successively by the first cross
Universal shaft, first connecting rod, piston rod, damping element cylinder body, the second connecting rod and the second crossed universal shaft composition, the piston
Bar is telescopic to be movably connected on the damping element cylinder body, and first crossed universal shaft and the second crossed universal shaft pass through
Bearing is connect with connection otic placode.
2. a kind of multidimensional vibration reduction damper based on Stewart mechanism according to claim 1, which is characterized in that Mei Gesuo
Connection otic placode is stated to use the high low plagiohedral structure in two sides in middle part or be made of a pair with bevelled convex block.
3. a kind of multidimensional vibration reduction damper based on Stewart mechanism according to claim 1, which is characterized in that Mei Gesuo
State the first crossed universal shaft, first connecting rod, piston rod, the damping element cylinder body, the second connecting rod and second on damping element
Crossed universal shaft all has identical axial line.
4. a kind of multidimensional vibration reduction damper based on Stewart mechanism according to claim 1, which is characterized in that described more
Tie up the control and weakening of damper low-frequency excitation suitable for 0-20Hz.
5. according to claim 1 or a kind of 4 multidimensional vibration reduction dampers based on Stewart mechanism, which is characterized in that described
Multidimensional vibration reduction damper can any angle arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537148.3A CN109537757A (en) | 2018-12-14 | 2018-12-14 | A kind of multidimensional vibration reduction damper based on Stewart mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537148.3A CN109537757A (en) | 2018-12-14 | 2018-12-14 | A kind of multidimensional vibration reduction damper based on Stewart mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN109537757A true CN109537757A (en) | 2019-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811537148.3A Pending CN109537757A (en) | 2018-12-14 | 2018-12-14 | A kind of multidimensional vibration reduction damper based on Stewart mechanism |
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| Country | Link |
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| CN (1) | CN109537757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928971A (en) * | 2021-02-19 | 2021-06-08 | 唐山钢铁集团有限责任公司 | Wind-resistant shockproof photovoltaic support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004022862A1 (en) * | 2004-05-06 | 2005-12-29 | Carl Freudenberg Kg | Vibration damper to reduce especially torsional vibrations on cardan shaft in motor vehicles has damping mass constructed as rotationally symmetrical flywheel mass fastened to flange by elastomer spring elements |
| CN205134606U (en) * | 2015-11-23 | 2016-04-06 | 常州容大结构减振股份有限公司 | Eliminate viscous damper connected system of off -plate moment of flexure |
| CN106378637A (en) * | 2016-11-18 | 2017-02-08 | 电子科技大学 | Gas-liquid parallel-connection six-freedom-degree machining platform system used for machine tool machining |
| CN107700913A (en) * | 2017-10-18 | 2018-02-16 | 天津大学 | A kind of multidimensional High Damping Performance device |
| CN108275039A (en) * | 2018-02-13 | 2018-07-13 | 天津大学 | A kind of engineering machinery shock absorbing seat based on Stewart mechanisms and intellectual material |
| CN209703743U (en) * | 2018-12-14 | 2019-11-29 | 天津大学 | A kind of multidimensional vibration reduction damper based on Stewart mechanism |
-
2018
- 2018-12-14 CN CN201811537148.3A patent/CN109537757A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004022862A1 (en) * | 2004-05-06 | 2005-12-29 | Carl Freudenberg Kg | Vibration damper to reduce especially torsional vibrations on cardan shaft in motor vehicles has damping mass constructed as rotationally symmetrical flywheel mass fastened to flange by elastomer spring elements |
| CN205134606U (en) * | 2015-11-23 | 2016-04-06 | 常州容大结构减振股份有限公司 | Eliminate viscous damper connected system of off -plate moment of flexure |
| CN106378637A (en) * | 2016-11-18 | 2017-02-08 | 电子科技大学 | Gas-liquid parallel-connection six-freedom-degree machining platform system used for machine tool machining |
| CN107700913A (en) * | 2017-10-18 | 2018-02-16 | 天津大学 | A kind of multidimensional High Damping Performance device |
| CN108275039A (en) * | 2018-02-13 | 2018-07-13 | 天津大学 | A kind of engineering machinery shock absorbing seat based on Stewart mechanisms and intellectual material |
| CN209703743U (en) * | 2018-12-14 | 2019-11-29 | 天津大学 | A kind of multidimensional vibration reduction damper based on Stewart mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928971A (en) * | 2021-02-19 | 2021-06-08 | 唐山钢铁集团有限责任公司 | Wind-resistant shockproof photovoltaic support |
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