CN108442240A - Vibration insulating system for bridge - Google Patents
Vibration insulating system for bridge Download PDFInfo
- Publication number
- CN108442240A CN108442240A CN201810152305.2A CN201810152305A CN108442240A CN 108442240 A CN108442240 A CN 108442240A CN 201810152305 A CN201810152305 A CN 201810152305A CN 108442240 A CN108442240 A CN 108442240A
- Authority
- CN
- China
- Prior art keywords
- bridge
- stator
- inner cylinder
- damper
- buffing pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- E01D19/04—Bearings; Hinges
Abstract
The invention discloses a kind of vibration insulating systems for bridge, including upper base plate and lower seat board；The lower surface both sides of the upper base plate are hinged with buffer bar by articulation piece, the lower end of the buffer bar is welded with buffering ball, the position that the upper end both sides of the lower seat board correspond to buffering ball has been fixedly connected with buffing pad, the upper end of the buffing pad is equipped with semi-circular recesses, and the buffering ball is placed in semi-circular recesses and is equipped with several compression springs between buffering ball and semi-circular recesses；Damping unit is additionally provided between the upper base plate and lower seat board, the damping unit includes magneto-rheological torsion damper and is converted to rotary motion so that the movement conversion mechanism that magneto-rheological torsion damper inhibits vibration for that will vibrate the linear motion generated；The present invention can effectively mitigate bridge vibration of beam, and external force is avoided to damage bridge, improve safety and the service life of bridge.
Description
Technical field
The present invention relates to field of civil engineering, more particularly to a kind of vibration insulating system for bridge.
Background technology
In building field now, especially in road construction field, bridge construction is the most important thing.Bridge is outside
The vibration of itself, this vibration can be caused often to lead to the damage in bridge structure under the action of portion's vibration, in the course of time,
It is this to damage safety and the service life that will have a direct impact on bridge.The problem of due to bridge self structure, it is difficult in bridge
Oscillation Amplitude is reduced in material, in order to solve this technical problem, can only vibration damping holder be set in bridge junction and be subtracted to reach
The effect gently vibrated.The existing vibration insulating system for bridge is generally the rubber block and bullet installed between pontic and bridge pier
Spring, effectiveness in vibration suppression are poor.
Invention content
In view of this, the purpose of the present invention is to provide a kind of vibration insulating system for bridge, it can effectively mitigate bridge
Vibration, avoid external force from damaging bridge, improve safety and the service life of bridge.
The vibration insulating system for bridge of the present invention, including the upper base plate being correspondingly arranged up and down and lower seat board；
The upper base plate bottom center is equipped with upper buffing pad, and the bottom of the upper buffing pad is convex surface；The lower seat board top
Portion center is equipped with lower buffing pad, and the top of the lower buffing pad is the matched concave surface in convex surface with upper buffing pad bottom, convex surface
Cushion pad is equipped between concave surface；
It is arranged with shock-absorbing spring and damping unit between the upper base plate and lower seat board and positioned at the both sides of buffing pad,
The damping unit is located on the outside of shock-absorbing spring；
The damping unit includes that magneto-rheological torsion damper and the linear motion for generating vibration are converted to rotation
It moves so that the movement conversion mechanism that magneto-rheological torsion damper inhibits vibration；The movement conversion mechanism includes using
In the rack for bearing oscillating load and for rack linear to be moved to the gear for being changed into rotary motion, the upper end of the rack
It is fixed on lower seat board lower surface, lower end and the guide holder cooperation for being located at lower seat board vertically, the gear is fixedly connected on the magnetic
The shaft and synchronous rotation of rheology torsional vibration damper.
Further, two upper protruding blocks are equipped in the upper base plate bottom symmetrical of the upper buffing pad both sides, in the lower buffing pad
The lower seat board of both sides determines portion and is arranged with two lower protruding blocks, and two upper protruding blocks are arranged in a one-to-one correspondence with two lower protruding blocks, the shock-absorbing spring
Upper end be set in upper protruding block upper and lower end and be set on lower protruding block.
Further, the magneto-rheological torsion damper include damper cylinder body and the stator being located in damper cylinder body and
Inner cylinder, the stator are fixedly connected with damper cylinder body, and the outer circle of stator is equipped with electromagnetic coil；The shaft with it is interior
Cylinder is fixedly connected with and cooperatively forms the rotor assembly of magneto-rheological torsion damper；The shaft coaxially passes through the endoporus of stator, and
The part that shaft is located at endoporus is equipped with the spiral bar for being used for magnetorheological fluid in auger damper cylinder body；The inner cylinder is sleeved on
Outside stator, it is equipped between the endoporus of stator, stator and inner cylinder and between inner cylinder and damper cylinder body the gap being connected, magnetic
Rheology liquid is filled in gap and can be flowed under the promotion of spiral bar.
Further, the damper cylinder body includes outer barrel and is separately fixed at the left end cap and right end cap of outer barrel both sides, institute
The left side for stating stator is fixedly connected with left end cap, and the left side of stator is equipped with for for the magnetic current between stator and inner cylinder
Become the channel slot that liquid enters stator inner hole.
Further, the both ends of the shaft are pierced by from left end cap, right end cap and are fixedly connected with gear respectively, two teeth
Wheel is respectively cooperating with transmission with two racks.
Further, the right side of the inner cylinder is equipped with the axis hole for being passed through for shaft, and the right side of inner cylinder is equipped with and uses
In entering the recirculation hole in inner cylinder for the magnetorheological fluid between inner cylinder and outer barrel.
Further, be used to generate the magnetic field of control magnetic rheological body for by the electromagnetic coil and set of permanent magnets at it is compound
Magnetic texure；The permanent magnet is annular permanent magnet, and the stator is radially equipped with for installing permanent magnet successively from inside to outside
The first annular groove and the second annular groove for installing electromagnetic coil.
Further, the cylinder of the inner cylinder is the first annular cylinder made of using permeability magnetic material and uses non-magnetic
Second annular canister made of material is formed by connecting, and the second annular canister face electromagnetic coil is arranged.
Beneficial effects of the present invention：
The vibration insulating system for bridge of the present invention, when bridge, which bears significant stress, causes vibration, by upper slow
The convex surface of red seat bottom cooperates with the concave surface at the top of lower buffing pad, and can cross makes bridge be deflected to a certain extent toward side,
The compressed formation damping of shock-absorbing spring and magneto-rheological torsion damper being located between the upper base plate and lower seat board of deflection side, rises
To the effect of buffering vibration, external force shock-absorbing spring elongation compressed after disappearing makes upper base plate homing again；Meanwhile magnetic
Rheology torsional vibration damper is matched with movement conversion mechanism, can convert reciprocal vibratory impulse to stable rotary motion,
Realize the steady vibration damping of overall process；Therefore, the present invention can effectively mitigate bridge vibration of beam, and external force is avoided to damage bridge,
Improve safety and the service life of bridge.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of the damping unit of the present invention.
Specific implementation mode
As shown in the figure：The vibration insulating system for bridge of the present embodiment, including 101 He of upper base plate that is correspondingly arranged up and down
Lower seat board 102；In use, upper base plate 101 can be connected with bridge ontology, lower seat board 102 can be connected with bridge pier.
101 bottom center of the upper base plate is equipped with upper buffing pad 201, and the bottom of the upper buffing pad 201 is convex surface；Institute
It states 102 center of top of lower seat board and is equipped with lower buffing pad 202, the top of the lower buffing pad 202 is and 201 bottom of upper buffing pad
The matched concave surface in convex surface, between convex surface and concave surface be equipped with cushion pad 203；Between the upper base plate 101 and lower seat board 102
And it is arranged with shock-absorbing spring 204 and damping unit positioned at the both sides of buffing pad, the damping unit is located at shock-absorbing spring 204
Outside；When bridge, which bears significant stress, causes vibration, pass through convex surface and the lower buffing pad 202 of 201 bottom of upper buffing pad
The concave surface at top cooperates, and can cross makes bridge be deflected to a certain extent toward side, be located at the upper base plate 101 of deflection side with
204 compressed formation of shock-absorbing spring damping between lower seat board 102, plays the effect of buffering vibration, and external force is pressurized after disappearing
The shock-absorbing spring 204 of contracting extends, and makes 101 homing of upper base plate again.
Damping unit is additionally provided between the upper base plate 101 and lower seat board 102, the damping unit includes magnetorheological torsion
Turn damper 3 and the linear motion for generating vibration is converted to rotary motion so that magneto-rheological torsion damper 3 is to vibration
The movement conversion mechanism inhibited；The movement conversion mechanism includes rack 401 for bearing oscillating load and for will
Rack 401, which moves along a straight line, is changed into the gear 402 of rotary motion, and the upper end of the rack 401 is fixed on upper base plate 101 vertically
Lower surface, lower end and the cooperation of guide holder 403 for being located at lower seat board 102, the gear 402 are fixedly connected on the magnetorheological torsion
Turn the shaft 31 of damper 3 and rotates synchronously；Shaft 31 is the rotating part of magneto-rheological torsion damper 3, and rotation makes
Magnetorheological fluid with flow, shear or mixed pattern carry out damping vibration attenuation；Rack 401 and 402 engaged transmission of gear；Rack
401 width are more than the width of gear 402；Guide holder guides rack 401 to move vertically；Magneto-rheological torsion damper 3 turns with movement
Converting mechanism matches, and can convert reciprocal vibratory impulse to stable rotary motion, realizes the steady vibration damping of overall process.
In the present embodiment, 101 bottom symmetrical of upper base plate in 201 both sides of upper buffing pad is equipped with two upper protruding blocks 205,
Lower seat board 102 in 202 both sides of lower buffing pad determines portion and is arranged with two lower protruding blocks 206, two upper protruding blocks and two lower protruding blocks one
One is correspondingly arranged, and the upper end of the shock-absorbing spring 204 is set in upper protruding block upper and lower end and is set on lower protruding block.
In the present embodiment, the magneto-rheological torsion damper 3 includes that damper cylinder body and being located in damper cylinder body is determined
Son 301 and inner cylinder 302, the stator 301 are fixedly connected with damper cylinder body, and the outer circle of stator 301 is equipped with electromagnetic wire
Circle 303；The shaft 31 is fixedly connected with inner cylinder 302 and cooperatively forms the rotor assembly of magneto-rheological torsion damper 3；It is described
Shaft 31 coaxially passes through the endoporus 301a of stator 301, and shaft 31 is located at the part of endoporus equipped with for auger damper
The spiral bar 305 of magnetorheological fluid in cylinder body；The inner cylinder 302 is sleeved on outside stator 301, endoporus 301a, the stator 301 of stator 301
The gap 304 being connected is equipped between inner cylinder 302 and between inner cylinder 302 and damper cylinder body, between magnetorheological fluid is filled in
It can flow in gap 304 and under the promotion of spiral bar 305；Damper cylinder body can be fixed on bottom plate 102；Spiral bar 305 makes
It obtains shaft 31 and forms screw shaft structure, have the function of helical feed；It can slot along the hand of spiral in spiral bar 305, in slot
Middle potting resin forms resin seal band, makes to seal between the hole wall of 301 endoporus of spiral bar 305 and stator；Pass through shaft 31
Spiral bar 305 pushes magnetorheological fluid to circulate, and takes full advantage of flowing and the shearing work pattern of magnetorheological fluid, generates
Damping force it is big, can realize that the transmission of high torque, adjustable extent are wide under the conditions of isometric.
In the present embodiment, the damper cylinder body includes outer barrel 307 and the left end cap for being separately fixed at 307 both sides of outer barrel
308 and right end cap 309, the left side of the stator 301 is fixedly connected with left end cap 308, and the left side of stator 301 is equipped with
Channel slot (not shown) for entering 301 endoporus of stator for the magnetorheological fluid between stator 301 and inner cylinder 302；Shaft
Angular contact bearing and sealing ring can be set between 31 and end cap；It is magnetorheological between stator 301 and inner cylinder 302 by channel slot
Liquid can enter 301 endoporus of stator, and to realize, when device acts on, magnetorheological fluid keeps flow regime in endoporus always；This
Outside, the right side of the inner cylinder 302 is equipped with the axis hole for being passed through for shaft 31, by fastening spiral shell between axis hole and shaft 31
Bolt to be connected；And the right side of inner cylinder 302 is equipped with for entering inner cylinder for the magnetorheological fluid between inner cylinder 302 and outer barrel 307
Recirculation hole in 302, so that the magnetorheological fluid between inner cylinder 302 and outer barrel 307 is also flowable so that be in damper
Magnetorheological fluid in cylinder body is fully circulated, and effectively prevents magnetorheological fluid sedimentation and the degradation problem that brings,
So that device reliability of operation is ensured；Recirculation hole can be six or other Rational numbers being circumferentially uniformly arranged.
In the present embodiment, the both ends of the shaft 31 are pierced by from left end cap 308, right end cap 309 and and gear respectively
402 are fixedly connected, and two gears 402 and two 401 are respectively cooperating with transmission, to improve the stationarity and promptness of power transmission.
In the present embodiment, the magnetic field for generating control magnetic rheological body is by the electromagnetic coil 303 and permanent magnet 310
The composite magnetic structure of composition；Coil can be changed by the electrical current size and electrical current direction that change electromagnetic coil 303
Magnetic field and the stacked system of permanent magnetic field and amplitude is superimposed, it can be achieved that change of the device under external load function in a wider context
Damped motion function；When permanent magnet 310 can also play the role of fail safe, i.e. device power-off simultaneously, still it is capable of providing
Certain damping force；The permanent magnet 310 is annular permanent magnet 310, and the stator 301 is radially equipped with successively from inside to outside
The first annular groove for installing permanent magnet 310 and the second annular groove for installing electromagnetic coil 303 are convenient for the peace of magnetic part
Dress and replacement；Wherein, the first annular groove is communicated with the second annular groove, and electromagnetic coil 303 is partially around on permanent magnet 310；First
Annular groove may include that several circumferential directions are uniformly arranged and radial section is trapezoidal or direction unit groove, and permanent magnet 310 is by several
Independent permanent magnet Unit 310, which is placed in unit groove, forms loop configuration.
In the present embodiment, the cylinder of the inner cylinder 302 be the first annular cylinder 302a made of using permeability magnetic material and
It is formed by connecting using the second annular canister 302b made of un-conducted magnetic material, and the second annular canister 302b face electromagnetic coils
303 settings；Inner cylinder 302 is welded using multistage different materials, is effectively changed electromagnetic coil 303 in device work and is generated
Magnetic field magnetic circuit, to increase the effective coverage of magnetorheological fluid, i.e., aggrandizement apparatus generates damping force (torque) value；It is excellent
Selection of land, the first annular cylinder 302a are made of 45# steel, and the second annular canister 302b is made of 304 stainless steels, institute
First annular cylinder 302a is stated with the second annular canister 302b to be connected by welding manner.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (8)
1. a kind of vibration insulating system for bridge, it is characterised in that：Including the upper base plate being correspondingly arranged up and down and lower seat board；
The upper base plate bottom center is equipped with upper buffing pad, and the bottom of the upper buffing pad is convex surface；In at the top of the lower seat board
Centre is equipped with lower buffing pad, and the top of the lower buffing pad is the matched concave surface in convex surface with upper buffing pad bottom, convex surface with it is recessed
Cushion pad is equipped between face；
It is arranged with shock-absorbing spring and damping unit, the resistance between the upper base plate and lower seat board and positioned at the both sides of buffing pad
Buddhist nun's device is located on the outside of shock-absorbing spring；
The damping unit includes that magneto-rheological torsion damper and the linear motion for generating vibration are converted to rotary motion
So that the movement conversion mechanism that magneto-rheological torsion damper inhibits vibration；The movement conversion mechanism includes for bearing
The rack of oscillating load and for rack linear movement to be changed into the gear of rotary motion, the upper end of the rack is fixed vertically
In upper base plate lower surface, lower end and the guide holder cooperation for being located at lower seat board, the gear is fixedly connected on the magnetorheological torsion
The shaft and synchronous rotation of damper.
2. the vibration insulating system according to claim 1 for bridge, it is characterised in that：In the upper of the upper buffing pad both sides
Seat board bottom symmetrical is equipped with two upper protruding blocks, and the lower seat board in the lower buffing pad both sides determines portion and is arranged with two lower protruding blocks, on two
Convex block is arranged in a one-to-one correspondence with two lower protruding blocks, and the upper end of the shock-absorbing spring is set in upper protruding block upper and lower end and is set in lower protruding block
On.
3. the vibration insulating system according to claim 2 for bridge, it is characterised in that：The magneto-rheological torsion damper packet
The stator and inner cylinder for including damper cylinder body and being located in damper cylinder body, the stator are fixedly connected with damper cylinder body, and
The outer circle of stator is equipped with electromagnetic coil；The shaft is fixedly connected with inner cylinder and cooperatively forms turning for magneto-rheological torsion damper
Sub-component；The shaft coaxially passes through the endoporus of stator, and shaft is located at the part of endoporus equipped with for auger damper
The spiral bar of magnetorheological fluid in cylinder body；The inner cylinder is sleeved on outside stator, between the endoporus of stator, stator and inner cylinder and inner cylinder with
The gap being connected is equipped between damper cylinder body, magnetorheological fluid is filled in gap and can be flowed under the promotion of spiral bar.
4. the vibration insulating system according to claim 3 for bridge, it is characterised in that：The damper cylinder body includes outer barrel
And it is separately fixed at the left end cap and right end cap of outer barrel both sides, the left side of the stator is fixedly connected with left end cap, and stator
Left side be equipped with channel slot for entering stator inner hole for the magnetorheological fluid between stator and inner cylinder.
5. the vibration insulating system according to claim 4 for bridge, it is characterised in that：The both ends of the shaft are respectively from a left side
End cap, right end cap are pierced by and are fixedly connected with gear, and two gears and two racks are respectively cooperating with transmission.
6. the vibration insulating system according to claim 5 for bridge, it is characterised in that：The right side of the inner cylinder, which is equipped with, to be used
In the axis hole passed through for shaft, and the right side of inner cylinder is equipped with for entering in inner cylinder for the magnetorheological fluid between inner cylinder and outer barrel
Recirculation hole.
7. the vibration insulating system according to claim 6 for bridge, it is characterised in that：For generating control magnetic rheological body
Magnetic field be by the electromagnetic coil and set of permanent magnets at composite magnetic structure；The permanent magnet is annular permanent magnet, described fixed
Son is radially equipped with the first annular groove for installing permanent magnet and the second annular groove for installing electromagnetic coil successively from inside to outside.
8. the vibration insulating system according to claim 7 for bridge, it is characterised in that：The cylinder of the inner cylinder is by adopting
The second annular canister is formed by connecting made of the first annular cylinder made of permeability magnetic material and use un-conducted magnetic material, and described second
Annular canister face electromagnetic coil is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152305.2A CN108442240A (en) | 2018-02-14 | 2018-02-14 | Vibration insulating system for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152305.2A CN108442240A (en) | 2018-02-14 | 2018-02-14 | Vibration insulating system for bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108442240A true CN108442240A (en) | 2018-08-24 |
Family
ID=63192524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810152305.2A Pending CN108442240A (en) | 2018-02-14 | 2018-02-14 | Vibration insulating system for bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108442240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059445A (en) * | 2021-11-30 | 2022-02-18 | 北京交通大学 | Combined bridge vibration reduction and isolation support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190776A (en) * | 2002-12-11 | 2004-07-08 | Hitachi Zosen Corp | Bearing device using magnetic viscous fluid |
| CN103016602A (en) * | 2012-12-10 | 2013-04-03 | 重庆大学 | Magneto-rheological torsion damper |
| CN105621194A (en) * | 2015-06-05 | 2016-06-01 | 重庆工商职业学院 | Adaptive elevator buffering damping device |
| CN206090285U (en) * | 2016-06-08 | 2017-04-12 | 魏东 | A damping support for bridge |
| CN206486801U (en) * | 2017-01-19 | 2017-09-12 | 重庆科技学院 | Damping due to rotation formula bridge vibrating isolation system |
-
2018
- 2018-02-14 CN CN201810152305.2A patent/CN108442240A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190776A (en) * | 2002-12-11 | 2004-07-08 | Hitachi Zosen Corp | Bearing device using magnetic viscous fluid |
| CN103016602A (en) * | 2012-12-10 | 2013-04-03 | 重庆大学 | Magneto-rheological torsion damper |
| CN105621194A (en) * | 2015-06-05 | 2016-06-01 | 重庆工商职业学院 | Adaptive elevator buffering damping device |
| CN206090285U (en) * | 2016-06-08 | 2017-04-12 | 魏东 | A damping support for bridge |
| CN206486801U (en) * | 2017-01-19 | 2017-09-12 | 重庆科技学院 | Damping due to rotation formula bridge vibrating isolation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059445A (en) * | 2021-11-30 | 2022-02-18 | 北京交通大学 | Combined bridge vibration reduction and isolation support |
| CN114059445B (en) * | 2021-11-30 | 2022-11-01 | 北京交通大学 | Combined bridge vibration reduction and isolation support |
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Application publication date: 20180824 |
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| RJ01 | Rejection of invention patent application after publication |