CN107574754A - A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations - Google Patents
A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations Download PDFInfo
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- CN107574754A CN107574754A CN201710942111.8A CN201710942111A CN107574754A CN 107574754 A CN107574754 A CN 107574754A CN 201710942111 A CN201710942111 A CN 201710942111A CN 107574754 A CN107574754 A CN 107574754A
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- Prior art keywords
- suspension cable
- rotating shaft
- damper
- connecting rod
- head rod
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- 239000000725 suspension Substances 0.000 title claims abstract description 54
- 230000010355 oscillation Effects 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims description 5
- 230000001629 suppression Effects 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to the controlling of vibration technical field, in particular to a kind of pendulum-type lever mass damper for controlling suspension cable space oscillations.Head rod, described head rod one end is provided with the connecting portion for being used for connecting with suspension cable, the other end is provided with damper, rotation connection first rotating shaft in the middle part of the head rod, the damper be provided in the head rod around the first rotating shaft rotate when produce damping force；Second connecting rod, described second connecting rod one end are rotatablely connected the first rotating shaft, and the other end is rotatablely connected the second rotating shaft, and second rotating shaft is fixedly connected with a bearing, and the bearing is used to fix with bridge floor.In the present invention during suspension cable in plane vibration, the vibration of suspension cable drives the second connecting rod to rotate by head rod, the connecting portion of head rod is arranged to be rotatablely connected with suspension cable, the amplitude that head rod drives the second connecting rod to rotate will be bigger, thus play effectiveness in vibration suppression in more preferable face.
Description
Technical field
The present invention relates to the controlling of vibration technical field, in particular to a kind of pendulum-type thick stick for controlling suspension cable space oscillations
Bar mass damper.
Background technology
The vibration problem of suspension cable is one of subject matter of large span stayed-cable bridge structure safety, is found by research：By
It is very small in the initial damping ratio of suspension cable, the damping ratio of suspension cable is improved by additional damping device, can effectively be controlled
Various common Inclined Cable Vibration forms.The principal vibration form of suspension cable is various wind-induced vibrations, typically by drag-line vertical
Vibration mode in perspective plane is referred to as in plane vibration, and the vibration mode that will be perpendicular to the perspective plane is referred to as out-of-plane vibration.Due to oblique
The direction of vibration of drag-line is perpendicular to the direction of incoming wind, and when the axis of incoming wind and bridge has certain angle, suspension cable produces
The raw space oscillations comprising in plane vibration and out-of-plane vibration simultaneously, the movement locus of any point is ellipse in rope, and is shaken in face
Dynamic displacement is generally higher than out-of-plane vibration.
In current suspension cable damper, based on suspension cable in plane vibration control, face outer control effect is general.Such as can not
Solve the problem well, be mounted with that suspension cable after damper will show the vibration problem based on out-of-plane vibration, together
Sample can influence the safety and normal use of bridge structure.
In order to solve the above problems, it is necessary to research and develop one kind can be simultaneously in suspension cable face and out-of-plane vibration is controlled and structure
Make simple damping unit.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of control suspension cable space oscillations
Pendulum-type connecting rod mass damper, can be simultaneously to being controlled in suspension cable face with out-of-plane vibration, and vibration control effect is good, structure
Make that simple, structure is safe and reliable, easy for installation.
The technical scheme is that：A kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations, it is special
Sign is, including head rod, and the head rod upper end is provided with the connecting portion for being used for connecting with suspension cable, and lower end is provided with
Damper, the head rod middle part are hingedly connected with first rotating shaft, and the damper is provided in first connection
Bar around the first rotating shaft axis rotate when produce damping force, described first rotating shaft can be arranged in around own axis
In one connecting rod, its axis intersects vertically with head rod axis；
Second connecting rod, described second connecting rod one end can be rotationally sheathed in first rotating shaft around first rotating shaft axis,
The other end is hingedly connected with the second rotating shaft, and second shaft axis and first rotating shaft diameter parallel, second rotating shaft are fixed
A bearing is connected, the bearing is used to fix with bridge floor.
The further connecting portion is rotatablely connected with the suspension cable.
The further connecting portion includes bearing, and the connecting portion is rotated by the bearing and the suspension cable to be connected
Connect.
The further first rotating shaft is at the height of head rod 2/3rds.
The further first rotating shaft is deep groove ball bearing.
The further damper is sticky shearing type damper.
The further damper includes being fixed on the gear of head rod lower end and the base being fixed on bridge floor；
Described gear is pivotably coupled to the lower end of head rod；The inclined teeth engaged with gear is provided with described base
Bar；The one end of described rack away from bearing is higher than close to one end of bearing.
Pendulum-type connecting rod mass damper is in equalising torque shape centered on the second rotating shaft being fixedly installed in the present invention
State.During suspension cable out-of-plane vibration, the vibration of suspension cable realizes vibration damping outside face by being transferred to damper after the amplification of face outer tie rod
Effect.During suspension cable in plane vibration, the vibration of suspension cable is transferred directly to damper by head rod and connected by first
Extension bar drives the second connecting rod to be transferred to damper after rotating, and realizes effectiveness in vibration suppression in face.
In the present invention during suspension cable in plane vibration, the vibration of suspension cable drives the second connecting rod to turn by head rod
It is dynamic, the connecting portion of head rod is arranged to be rotatablely connected with suspension cable, head rod drives what the second connecting rod rotated
Amplitude will be bigger, thus play effectiveness in vibration suppression in more preferable face.
Brief description of the drawings
Fig. 1 is the section signal for the pendulum-type connecting rod mass damper that suspension cable space oscillations are controlled in the embodiment of the present invention
Figure；
Fig. 2 is the installation signal for the pendulum-type connecting rod mass damper that suspension cable space oscillations are controlled in the embodiment of the present invention
Figure.
In figure：1- head rods, 10- connecting portions, 101- bearings, 11- first rotating shafts, 12- dampers, 2- second are connected
Bar, the rotating shafts of 21- second, 3- suspension cables, 4- bridge floors, 5- bearings.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Referring to shown in Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of pendulum-type connecting rod matter for controlling suspension cable space oscillations
Damper is measured, it includes：
Head rod 1, the one end of head rod 1 are provided with the connecting portion for being used for connecting with suspension cable 3, and the other end is provided with resistance
Buddhist nun's device 12, the middle part of head rod 1 rotation connection first rotating shaft 11, damper 12 are provided in head rod 1 around first
Rotating shaft 11 produces damping force when rotating；Damper 12 is sticky shearing type damper, and bridge floor 4 can be movably supported in along direction across bridge
On.First rotating shaft 11 is at the height of head rod 2/1sts three.First rotating shaft 11 is deep groove ball bearing.
Second connecting rod 2, the one end of the second connecting rod 2 rotation connection first rotating shaft 11, the other end are rotatablely connected the second rotating shaft
21, the second rotating shaft 21 is fixedly connected with a bearing 5, and bearing 5 is used to fix with bridge floor 4.
Shown in Figure 2, pendulum-type connecting rod mass damper is centered on the second rotating shaft 21 being fixedly installed in the present invention
In equalising torque state.During 3 out-of-plane vibration of suspension cable, the vibration of suspension cable 3 after the amplification of the second connecting rod 2 by being transferred to resistance
Buddhist nun's device 12, realize effectiveness in vibration suppression outside face.During 3 in plane vibration of suspension cable, the vibration of suspension cable 3 is directly passed by head rod 1
It is handed to damper 12 and drives the second connecting rod 2 to be transferred to damper 12 after rotating by head rod 1, realizes vibration damping in face
Effect.
Connecting portion 10 is rotatablely connected with suspension cable 3.Connecting portion 10 includes bearing 101, and connecting portion 10 is by bearing 101 and tiltedly
Drag-line 3 is rotatablely connected.
In the present invention during 3 in plane vibration of suspension cable, the vibration of suspension cable 3 drives the second connecting rod 2 by head rod 1
Rotate, the connecting portion 10 of head rod 1 is arranged to be rotatablely connected with suspension cable 3, head rod 1 drives the second connecting rod
2 amplitudes rotated will be bigger, thus play effectiveness in vibration suppression in more preferable face.
For example, certain bridge suspension cable damper requirement in suspension cable face, out-of-plane vibration controlled, damper connecting portion
Setting height(from bottom) be 2m, the width of damper is 750mm, bearing uses 250 × 300 × δ 10 rectangular steel pipe, and the second rotating shaft is extremely
The height of bridge floor is 800mm, the elliptical tube that head rod top is 100 × δ of Φ 8 pipe, bottom is 200 × 100, outside face
Displacement gearratio control is 1.5.Damper is sticky shearing type damper, is constructed using double plates, and plate width is 150mm,
Sticky shearing type damper overall height is 350mm.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (6)
- A kind of 1. pendulum-type connecting rod mass damper for controlling suspension cable space oscillations, it is characterised in that including：Head rod (1), head rod (1) upper end is provided with the connecting portion (10) being used for suspension cable (3) connection, and lower end is provided with damper (12), it is hingedly connected with first rotating shaft (11) in the middle part of the head rod, the damper (12) is provided in described the One connecting rod (1) around the first rotating shaft (11) axis rotate when produce damping force, described first rotating shaft (11) can be around itself Axis is rotationally arranged on head rod (1), and its axis intersects vertically with head rod (1) axis；Second connecting rod (2), described second connecting rod (2) one end can rotationally be sheathed on first turn around first rotating shaft (11) axis On axle (11), the other end is hingedly connected with the second rotating shaft (21), the second rotating shaft (21) axis and first rotating shaft (11) axis Parallel, second rotating shaft (21) is fixedly connected with a bearing (5), and the bearing (5) is used for fixed with bridge floor (4).
- 2. a kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations as claimed in claim 1, its feature exist In：The connecting portion (10) is rotatablely connected with the suspension cable (3).
- 3. a kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations as claimed in claim 2, its feature exist In：The connecting portion (10) includes bearing (101), and the connecting portion (10) passes through the bearing (101) and the suspension cable (3) Rotation connection.
- 4. a kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations as claimed in claim 1, its feature exist In：The first rotating shaft (11) is at the height of head rod (1) 2/3rds.
- 5. a kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations as claimed in claim 1, its feature exist In：The first rotating shaft (11) is deep groove ball bearing.
- 6. a kind of pendulum-type connecting rod mass damper for controlling suspension cable space oscillations as claimed in claim 1, its feature exist In：The damper (12) is sticky shearing type damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942111.8A CN107574754A (en) | 2017-10-11 | 2017-10-11 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942111.8A CN107574754A (en) | 2017-10-11 | 2017-10-11 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
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| CN107574754A true CN107574754A (en) | 2018-01-12 |
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|---|---|---|---|
| CN201710942111.8A Pending CN107574754A (en) | 2017-10-11 | 2017-10-11 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235229A (en) * | 2018-09-07 | 2019-01-18 | 中铁大桥科学研究院有限公司 | Lever damping unit and cable-stayed bridge equipped with lever damping unit |
| CN109371837A (en) * | 2018-11-02 | 2019-02-22 | 中铁大桥科学研究院有限公司 | A kind of suspension cable damper for taking into account cable tension test |
| CN113622304A (en) * | 2021-08-06 | 2021-11-09 | 中铁大桥局集团有限公司 | Stay cable lever amplification damping device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0115634D0 (en) * | 2000-06-27 | 2001-08-15 | Crawford Moya | "Apparatus" |
| CN101613991A (en) * | 2008-06-23 | 2009-12-30 | 同济大学 | Lever-type gain device for damper |
| CN203383146U (en) * | 2013-06-27 | 2014-01-08 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Stay cable swing lever quality damping system integrating eddy-current damping and friction damping |
| CN103742585A (en) * | 2014-01-07 | 2014-04-23 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Stay cable permanent magnet eddy current damper and damping generation method |
| CN204676425U (en) * | 2015-05-21 | 2015-09-30 | 中国铁路总公司 | The eddy current damper that a kind of suspension cable out-of-plane vibration controls |
| CN207512604U (en) * | 2017-10-11 | 2018-06-19 | 中铁第四勘察设计院集团有限公司 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
-
2017
- 2017-10-11 CN CN201710942111.8A patent/CN107574754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0115634D0 (en) * | 2000-06-27 | 2001-08-15 | Crawford Moya | "Apparatus" |
| CN101613991A (en) * | 2008-06-23 | 2009-12-30 | 同济大学 | Lever-type gain device for damper |
| CN203383146U (en) * | 2013-06-27 | 2014-01-08 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Stay cable swing lever quality damping system integrating eddy-current damping and friction damping |
| CN103742585A (en) * | 2014-01-07 | 2014-04-23 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Stay cable permanent magnet eddy current damper and damping generation method |
| CN204676425U (en) * | 2015-05-21 | 2015-09-30 | 中国铁路总公司 | The eddy current damper that a kind of suspension cable out-of-plane vibration controls |
| CN207512604U (en) * | 2017-10-11 | 2018-06-19 | 中铁第四勘察设计院集团有限公司 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235229A (en) * | 2018-09-07 | 2019-01-18 | 中铁大桥科学研究院有限公司 | Lever damping unit and cable-stayed bridge equipped with lever damping unit |
| CN109235229B (en) * | 2018-09-07 | 2020-05-12 | 中铁大桥科学研究院有限公司 | Lever-type damping device and cable-stayed bridge with same |
| CN109371837A (en) * | 2018-11-02 | 2019-02-22 | 中铁大桥科学研究院有限公司 | A kind of suspension cable damper for taking into account cable tension test |
| CN109371837B (en) * | 2018-11-02 | 2023-08-18 | 中铁大桥科学研究院有限公司 | Stay cable damper capable of testing cable force |
| CN113622304A (en) * | 2021-08-06 | 2021-11-09 | 中铁大桥局集团有限公司 | Stay cable lever amplification damping device |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |
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| RJ01 | Rejection of invention patent application after publication |