CN106436948B - A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber - Google Patents
A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber Download PDFInfo
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- CN106436948B CN106436948B CN201610822740.2A CN201610822740A CN106436948B CN 106436948 B CN106436948 B CN 106436948B CN 201610822740 A CN201610822740 A CN 201610822740A CN 106436948 B CN106436948 B CN 106436948B
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- traveling wave
- end cover
- cylinder
- skeleton
- drum type
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The present invention provides a kind of drum type brake traveling wave flow spoiler drag reduction vibration absorbers, including driving portion, first end cover, second end cover and skeleton, one end of the skeleton is connect with the first end cover, the other end of the skeleton is connect with the second end cover, the second end cover is connect with the driving portion, the windward side of the skeleton is smooth arc surface, the leeward of the skeleton is equipped with symmetrical first groove and the second groove, it is equipped with the first traveling wave cylindrical band transmission mechanism in first groove, the second traveling wave cylinder tape handler is equipped in second groove.The beneficial effects of the invention are as follows：By the speed for controlling the first traveling wave cylindrical band transmission mechanism and the second traveling wave cylinder tape handler, the whirlpool of series of stable is formed at trough, eliminate traditional shear layer, it can delay or prevent the formation of wake flow vortex, significantly reduce the aerodynamic force of body structure surface, and then effectively inhibits or reduce the wind-induced vibration effect of structure.
Description
Technical field
The present invention relates to drag reduction vibration absorber more particularly to a kind of drum type brake traveling wave flow spoiler drag reduction vibration absorbers.
Background technology
With the progress of Building technology and the continuous improvement of design level so that modern architecture towards growing up, toweringization,
The directions such as lighting are developed, as high-rise building, Loads of Long-span Bridges, tall and slender structure and large span spatial structure continue to bring out.These are built
It builds due to having the characteristics that light weight, flexibility are big, damping is small, the natural frequency of vibration is low and become wind sensitive structure.Modern building fabric
Build complexity is various, and shows as bluff body structure to wind flow, when wind bypasses building inevitably with flow separation, cut
Layer and Vortex Shedding are cut, leads to that Coupling effect of seepage rock deformation occurs and causes to vibrate between wind field and building, building is reduced when serious
The comfort level of object user even jeopardizes structure safety.The wind load and wind-induced vibration effect for reducing wind sensitive structure are structure wind
The key problem of engineering research, the wind resistance to improving wind sensitive structure have particularly important meaning.
In addition to super-high buildings, bridge is also the multiple field of wind-induced vibration.Loads of Long-span Bridges is only that " superelevation to lay flat on one's back is built
Build ", it is equally faced with intrinsic frequency and damping ratio is too low, to wind-induced vibration sensitive issue.In all components of Loads of Long-span Bridges
In, suspension cable is the part for being easy to happen wind-induced vibration, and the cylindrical shape of bridge cable is highly detrimental to its dynamic response, and
Slenderness ratio is big, flexibility is big, and the outer exciting force of low frequency can cover its resonance region.The damping of suspension cable is small, once occur to vibrate it
Response is difficult decaying, which determines that it is very sensitive to wind-induced vibration.Under wind or wind and rain synergy, bridge is drawn
Suo Yi occur wind and rain shake, wake galloping and vortex-induced vibration.The amplitude that wind and rain shakes is usually very big, and the amplitude of vortex-induced vibration is usually not
Greatly, but it occurs frequently, unfavorable to the fatigue life of suspension cable.
As it can be seen that cylindrical structure is structure type common in engineering, it is to have extensive engineer application that stream, which causes cylinder vibration,
The fluid structurecoupling problem of background often results in the reduction of structure service life, or even generates and destroy and jeopardize structure safety.By grinding
Study carefully the flow field structure, dynamic response and vibration control method of peripheral flow and its Flow vibration, shakes for engineering structure charming appearance and behaviour
Dynamic control provides important guiding value and reference.
Invention content
In order to solve the problems in the prior art, the present invention provides a kind of drum type brake traveling wave flow spoiler drag reduction vibration damping dresses
It sets.
The present invention provides a kind of drum type brake traveling wave flow spoiler drag reduction vibration absorbers, including driving portion, first end cover, second
End cap and skeleton, one end of the skeleton are connect with the first end cover, and the other end of the skeleton connects with the second end cover
It connects, the second end cover is connect with the driving portion, and the windward side of the skeleton is smooth arc surface, the leeward of the skeleton
Equipped with symmetrical first groove and the second groove, it is equipped with the first traveling wave cylindrical band transmission mechanism in first groove, described the
The second traveling wave cylinder tape handler is equipped in two grooves, the first traveling wave cylindrical band transmission mechanism connects with the driving portion
It connects, the first traveling wave cylindrical band transmission mechanism is connected with the second traveling wave cylinder tape handler.
As a further improvement on the present invention, the first traveling wave cylindrical band transmission mechanism includes the first traveling wave cylinder, drives
Moving axis and first driven shaft, the first traveling wave cylinder are stretched in the drive shaft, in first driven shaft, the drive shaft and institute
Driving portion connection is stated, the second traveling wave cylinder tape handler includes that the second traveling wave cylinder, second driven shaft and third are driven
Axis, the second traveling wave cylinder are stretched in the second driven shaft, on third driven shaft, the second driven shaft and the driving
Axis is connected by gear drive.
As a further improvement on the present invention, the first traveling wave cylinder, the second traveling wave cylinder outer surface be wavy
Surface, the first traveling wave cylinder, the second traveling wave cylinder, skeleton are combined into cylindrical shape.The first traveling wave cylinder, the second row
Wave cylinder is replaceable module, and different traveling wave wavelength, wave amplitude and traveling wave number can be selected according to the difference of local environment.
As a further improvement on the present invention, the first traveling wave cylinder is the first silica gel traveling wave cylinder, the second traveling wave circle
Cylinder is the second silica gel traveling wave cylinder, and the first sliding block is equipped in the first traveling wave cylinder, and the is equipped in the second traveling wave cylinder
Two sliding blocks.
As a further improvement on the present invention, the drive shaft, first driven shaft, second driven shaft, third driven shaft
Both ends are circumferentially rotated with the first end cover, second end cover respectively, axial restraint is connect.
As a further improvement on the present invention, the driving portion is servo motor, and the second end cover is connected with motor peace
End cap is filled, the servo motor is fixed on the motor installation end and covers.
As a further improvement on the present invention, the servo motor passes through shaft coupling and the driving axis connection.
As a further improvement on the present invention, the first end cover is connected with the first current limiting plate, the second end cover connection
There is the second current limiting plate.
As a further improvement on the present invention, first current limiting plate, the second current limiting plate are annulus plate.
The beneficial effects of the invention are as follows：By controlling the first traveling wave cylindrical band transmission mechanism and the second traveling wave cylinder V belt translation
The speed of mechanism forms the whirlpool of series of stable at trough, eliminates traditional shear layer, can delay or prevent tail
The formation of vortex is flowed, significantly reduces the aerodynamic force of body structure surface, and then effectively inhibit or reduce the wind-induced vibration effect of structure.
Description of the drawings
Fig. 1 is a kind of schematic diagram of drum type brake traveling wave flow spoiler drag reduction vibration absorber of the present invention.
Fig. 2 is a kind of diagrammatic cross-section of drum type brake traveling wave flow spoiler drag reduction vibration absorber of the present invention.
Fig. 3 is a kind of partial schematic diagram of drum type brake traveling wave flow spoiler drag reduction vibration absorber of the present invention.
Fig. 4 is a kind of transmission schematic diagram of drum type brake traveling wave flow spoiler drag reduction vibration absorber of the present invention.
Specific implementation mode
The present invention is further described for explanation and specific implementation mode below in conjunction with the accompanying drawings.
Drawing reference numeral in Fig. 1 to Fig. 4 is：Second end cover 1；First end cover 2；First current limiting plate 3；Second traveling wave cylinder 4；
Skeleton 5；First groove 51；Second groove 52；Motor installs end cap 6；Second driven shaft 7；Third driven shaft 8；Drive shaft 9；The
One sliding block 10；Gear drive 11；Ladder bushing 12；Sleeve 13；Shaft coupling 14；Servo motor 15；Second current limiting plate 16；The
One driven shaft 17；First traveling wave cylinder 18；Second sliding block 19.
As shown in Figures 1 to 4, a kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber, including two parts:First part
For cylinder-travelling-wave wall mechanical-force-transmission system；Second part is high torque servo motor driven systems, and high torque servo motor drives
Dynamic system includes driving portion, and cylinder-travelling-wave wall mechanical-force-transmission system includes first end cover 2, second end cover 1 and skeleton 5, wherein
The first end cover 2 is preferably left end cap, and the second end cover 1 is preferably right end cap, one end of the skeleton 5 and described first
End cap 2 connects, and the other end of the skeleton 5 is connect with the second end cover 1, and the second end cover 1 is connect with the driving portion,
The skeleton 5 is preferably profile skeleton, and the skeleton 5 is internally hollow and be connected to, and the windward side of the skeleton 5 is smooth circle
Cambered surface, the leeward of the skeleton 5 are equipped with 51 and second groove 52 of symmetrical first groove, and the is equipped in first groove 51
One traveling wave cylindrical band transmission mechanism, second groove 52 is interior to be equipped with the second traveling wave cylinder tape handler, first traveling wave
Cylinder tape handler is connect with the driving portion, the first traveling wave cylindrical band transmission mechanism and the second traveling wave cylindrical band
Transmission mechanism is connected.
As shown in Figures 1 to 4, the first traveling wave cylindrical band transmission mechanism includes the first traveling wave cylinder 18,9 and of drive shaft
First driven shaft 17, the first traveling wave cylinder 18 are stretched in the drive shaft 9, in first driven shaft 17, the drive shaft 9 with
The driving portion connection, the second traveling wave cylinder tape handler include the second traveling wave cylinder 4, second driven shaft 7 and third
Driven shaft 8, the second traveling wave cylinder 4 are stretched in the second driven shaft 7, on third driven shaft 8, the second driven shaft 7
Connect by gear drive 11 with the drive shaft 9, the gear drive 11 preferably include two be meshed it is straight
Tooth cylinder tooth post.
As shown in Figures 1 to 4, the first traveling wave cylinder 4, the second traveling wave cylinder 18 outer surface be running surface,
The first traveling wave cylinder 18, the second traveling wave cylinder 4, skeleton 5 outer surface be combined into cylindrical shape.
As shown in Figures 1 to 4, the first traveling wave cylinder 18 is the first silica gel traveling wave cylinder, and the second traveling wave cylinder 4 is the
Second silica gel traveling wave cylinder, the first traveling wave cylinder 18 is interior to be equipped with the first sliding block 10, and second is equipped in the second traveling wave cylinder 4
Sliding block 19.
As shown in Figures 1 to 4, pass through between drive shaft 9, first driven shaft 17, second driven shaft 7, third driven shaft 8
First sliding block 10 and gear drive 11 form a transmission device.Silica gel material simultaneously there is the first traveling wave of running surface to justify
The 4, second traveling wave cylinder 18 of cylinder is respectively nested in the outside of transmission device, and the frictional force between realizes that transmission device drives circle
The rotation of column sleeve cylinder.
As shown in Figures 1 to 4, the both ends of the drive shaft 9, first driven shaft 17, second driven shaft 7, third driven shaft 8
It is circumferentially rotated respectively with the first end cover 2, second end cover 1, axial restraint is connect.
As shown in Figures 1 to 4, the driving portion is preferably servo motor 15, and the second end cover 1 is connected with motor installation
End cap 6, the servo motor 15 are fixed on the motor installation end cap 6.By inputting friction speed to servo motor 15, reach
To the purpose for adjusting travelling-wave wall movement velocity so that flowing control effect of the device in different arrives stream wind speeds reaches maximum.
As shown in Figures 1 to 4, second driven shaft 7, third driven shaft 8 and drive shaft 9 pass through ladder bushing 12 and set respectively
Cylinder 13 is connected with second end cover 1, first end cover 2 and motor installation end cap 6.The drive shaft 9, first driven shaft 17, second
Driven shaft 7, third driven shaft 8 pass through second end cover 1, first end cover 2 and motor to install the reserving hole on end cap 6 and use screw
Connection.
As shown in Figures 1 to 4, the servo motor 15 is connect by shaft coupling 14 with the drive shaft 9.Second part system
System is by shaft coupling 14, servo motor 15（Model MHMD082G1U750）Composition.Servo motor 15 passes through shaft coupling 14 and first
The drive shaft 9 of part system connects.
As shown in Figures 1 to 4, the first end cover 2 is connected with the first current limiting plate 3, and the second end cover 1 is connected with second
Current limiting plate 16.
As shown in Figures 1 to 4, first current limiting plate 3, the second current limiting plate 16 are annulus plate.
A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber provided by the invention, after starting travelling-wave wall, downstream
The traveling wave constantly moved can eliminate the flow separation phenomenon occurred in fixed cylinder is streamed.When incoming flows through traveling wave wall surface
When, if the amplitude of wall surface movement and phase velocity are suitable, stable whirlpool is captured at trough.A series of this whirlpool is located at main flow area
Between nearly wall shear layer, similar " rolling bearing " can be played the role of, traditional boundary layer and its side effect are just
It can be eliminated, wake flow is prevented to form the vortex alternately to fall off, to greatly reduce the fluctuation pressure of body structure surface, substantially
Degree reduces the lift of body structure surface.Since wake flow can not form the vortex alternately to fall off, wake flow is also reduced to a certain extent
Width, eliminate the presence in absolute instability area in wake flow so that the resistance of body structure surface is also greatly lowered.
A kind of vibration damping workflow of drum type brake traveling wave flow spoiler drag reduction vibration absorber provided by the invention is as follows：
（1）When incoming flows through the travelling-wave wall of cylinder tail portion, goes out to form stable whirlpool at travelling-wave wall trough, play class
Like the effect of rolling bearing, prevent to be formed with flow separation and wake flow vortex；
（2）Structure tail portions region flow fields environment changes, so that structural air power characteristic value changes, suffered by structure
Lift and resistance are greatly lowered.
A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber provided by the invention, by cylinder-travelling-wave wall mechanical-force-transmission system
System and servo motor driving system composition form the whirlpool of series of stable at trough, disappear by controlling the speed of traveling wave locomotion
Except traditional shear layer, wake flow vortex is prevented to be formed, while from significantly reducing the aerodynamic force of body structure surface.Device
Actuating system is clear, and vibration attenuation mechanism is clear, can reduce the aerodynamic force and wind-induced vibration effect of structure well.
A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber provided by the invention, for the elongate cylinder in being used
Structure installs drum type brake traveling wave flow spoiler drag reduction vibration absorber in the tail portion of cylinder.In being affected by the wind larger environment, when
After starting travelling-wave wall, the traveling wave downstream constantly moved eliminates the flow separation phenomenon occurred in fixed cylinder is streamed.
When incoming flows through traveling wave wall surface, if the amplitude of wall surface movement and phase velocity are suitable, stable whirlpool is captured at trough.This
A series of whirlpools are located between main flow area and nearly wall shear layer, can play the role of similar " rolling bearing ", traditional
Boundary layer and its side effect can be eliminated, and wake flow is prevented to form the vortex alternately to fall off, to greatly reduce structure
The lift of body structure surface is greatly lowered in the fluctuation pressure on surface.Since wake flow can not form the vortex alternately to fall off also one
The width for determining to reduce wake flow in degree, eliminates the presence in absolute instability area in wake flow so that the resistance of body structure surface
It has obtained significantly reducing.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (9)
1. a kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber, it is characterised in that：Including driving portion, first end cover, second end
Lid and skeleton, one end of the skeleton are connect with the first end cover, and the other end of the skeleton is connect with the second end cover,
The second end cover is connect with the driving portion, and the windward side of the skeleton is smooth arc surface, and the leeward of the skeleton is set
There are symmetrical first groove and the second groove, is equipped with the first traveling wave cylindrical band transmission mechanism in first groove, described second
The second traveling wave cylinder tape handler is equipped in groove, the first traveling wave cylindrical band transmission mechanism is connect with the driving portion,
The first traveling wave cylindrical band transmission mechanism is connected with the second traveling wave cylinder tape handler.
2. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 1, it is characterised in that：First traveling wave
Cylinder tape handler includes the first traveling wave cylinder, drive shaft and first driven shaft, and the first traveling wave cylinder is stretched in described
In drive shaft, first driven shaft, the drive shaft is connect with the driving portion, and the second traveling wave cylinder tape handler includes
Second traveling wave cylinder, second driven shaft and third driven shaft, the second traveling wave cylinder are stretched in the second driven shaft, third
On driven shaft, the second driven shaft is connect with the drive shaft by gear drive.
3. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 2, it is characterised in that：First traveling wave
Cylinder, the second traveling wave cylinder outer surface be running surface, the first traveling wave cylinder, the second traveling wave cylinder, skeleton combination
At cylindrical shape.
4. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 2, it is characterised in that：First traveling wave
Cylinder is the first silica gel traveling wave cylinder, and the second traveling wave cylinder is the second silica gel traveling wave cylinder, is equipped in the first traveling wave cylinder
First sliding block, the second traveling wave cylinder is interior to be equipped with the second sliding block.
5. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 2, it is characterised in that：The drive shaft,
First driven shaft, second driven shaft, third driven shaft both ends circumferentially rotated respectively with the first end cover, second end cover, axis
To being fixedly connected.
6. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 2, it is characterised in that：The driving portion is
Servo motor, the second end cover are connected with motor installation end cap, and the servo motor is fixed on the motor installation end and covers.
7. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 6, it is characterised in that：The servo motor
Pass through shaft coupling and the driving axis connection.
8. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 1, it is characterised in that：The first end cover
It is connected with the first current limiting plate, the second end cover is connected with the second current limiting plate.
9. drum type brake traveling wave flow spoiler drag reduction vibration absorber according to claim 8, it is characterised in that：First current limliting
Plate, the second current limiting plate are annulus plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822740.2A CN106436948B (en) | 2016-09-13 | 2016-09-13 | A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822740.2A CN106436948B (en) | 2016-09-13 | 2016-09-13 | A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber |
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| Publication Number | Publication Date |
|---|---|
| CN106436948A CN106436948A (en) | 2017-02-22 |
| CN106436948B true CN106436948B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610822740.2A Active CN106436948B (en) | 2016-09-13 | 2016-09-13 | A kind of drum type brake traveling wave flow spoiler drag reduction vibration absorber |
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| CN (1) | CN106436948B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566546B (en) * | 2019-10-21 | 2024-05-31 | 哈尔滨工业大学（深圳） | Eccentric bearing traveling wave wall driving device for inhibiting cylindrical circumferential vortex from falling off |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866363A (en) * | 1971-04-16 | 1975-02-18 | James R King | High energy wind dissipation adjacent buildings |
| SU1130680A1 (en) * | 1980-05-29 | 1984-12-23 | Akimov Peretts Ivan D | Apparatus for damping osicillations of cylindrical structures |
| CN2230785Y (en) * | 1994-12-30 | 1996-07-10 | 铁道部大桥工程局桥梁科学研究所 | Shock damper |
| JPH0988374A (en) * | 1995-09-20 | 1997-03-31 | Kajima Corp | Oil-encapsulated, inter-layer vibration damping device of wind load responsive type |
| WO2006050802A1 (en) * | 2004-11-09 | 2006-05-18 | Tutech Innovation Gmbh | Device for damping vibrations in a building |
| CN200949272Y (en) * | 2005-12-13 | 2007-09-19 | 滕军 | Dynamic shockabsorbing and energy consumption apparatus capable of reducing high tower structure wind-induced vibration responses |
| CN206110387U (en) * | 2016-09-13 | 2017-04-19 | 哈尔滨工业大学深圳研究生院 | Drum formula travelling wave spoiler drag reduction vibration damper |
-
2016
- 2016-09-13 CN CN201610822740.2A patent/CN106436948B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866363A (en) * | 1971-04-16 | 1975-02-18 | James R King | High energy wind dissipation adjacent buildings |
| SU1130680A1 (en) * | 1980-05-29 | 1984-12-23 | Akimov Peretts Ivan D | Apparatus for damping osicillations of cylindrical structures |
| CN2230785Y (en) * | 1994-12-30 | 1996-07-10 | 铁道部大桥工程局桥梁科学研究所 | Shock damper |
| JPH0988374A (en) * | 1995-09-20 | 1997-03-31 | Kajima Corp | Oil-encapsulated, inter-layer vibration damping device of wind load responsive type |
| WO2006050802A1 (en) * | 2004-11-09 | 2006-05-18 | Tutech Innovation Gmbh | Device for damping vibrations in a building |
| CN200949272Y (en) * | 2005-12-13 | 2007-09-19 | 滕军 | Dynamic shockabsorbing and energy consumption apparatus capable of reducing high tower structure wind-induced vibration responses |
| CN206110387U (en) * | 2016-09-13 | 2017-04-19 | 哈尔滨工业大学深圳研究生院 | Drum formula travelling wave spoiler drag reduction vibration damper |
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| CN106436948A (en) | 2017-02-22 |
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