CN105178184B - Friction damper - Google Patents
Friction damper Download PDFInfo
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- CN105178184B CN105178184B CN201510304869.XA CN201510304869A CN105178184B CN 105178184 B CN105178184 B CN 105178184B CN 201510304869 A CN201510304869 A CN 201510304869A CN 105178184 B CN105178184 B CN 105178184B
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- friction
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Abstract
The invention belongs to the technical field of building facility vibration resistance, and particularly relates to a friction damper used for cable-stayed inhaul cable to resist vibration. The friction damper comprises kinetic friction units which are arranged on the inhaul cable of a cable-stayed bridge and vibrate synchronously with the inhaul cable, and static friction units fixedly arranged relative to a bridge body of the cable-stayed bridge. The kinetic friction units are in sliding friction fit with the static friction units in the plane perpendicular to the axis of the inhaul cable in any directions. The kinetic friction units arranged on the inhaul cable can be in sliding friction fit with the static friction units arranged on the bridge body in any directions; when the inhaul cable vibrates, relative friction is produced between the kinetic friction units and the static friction units so the vibration of the inhaul cable in any radial line direction can be buffered and absorbed; full freedom degree damping is provided for the inhaul cable; the vibration resistant property of the inhaul cable is greatly improved.
Description
Technical field
The invention belongs to Architectural Equipment antivibration area is and in particular to a kind of frictional damping for suspension cable antidetonation
Device.
Background technology
Cable-stayed bridge is widely used as the Classic couture in bridge construction field, but cable-stayed bridge itself also has it
Some defects that can not ignore, with the continuous development of bridge construction technology, it is also proposed higher to the stability of cable-stayed bridge
Require.Cable-stayed bridge is generally used on the larger river surface of degree of overstating or sea, and more obvious by windage, wind-force is crossed conference and led to
Oblique pull lock produces vibration, and then bridge stability is impacted, the safety of serious threat bridge floor driving and pedestrian.For oblique pull
The vibration problem of lock, proposes multiple anti-shock methods in prior art, wherein conventional anti-shock methods are composed of external damping device, damping
Device can enter row buffering and absorption to the vibration that oblique pull lock produces.Dashpot type common in the art includes oil pressure damping
Device, magnetic subtract antivibrator, viscous damper etc., but it is exactly that degree of freedom is low that above-mentioned antivibrator all has a common defect,
Antivibrator often can only absorb the vibration on the vibration of single direction or limited specific direction it is impossible to absorb any radial line of drag-line
Vibration on direction, simultaneously the damping size of all directions uneven it is difficult to reach the damping effect of anticipation.
Content of the invention
It is an object of the invention to provide one kind can absorb the vibration of any radial line of drag-line direction and all directions shock resistant damping is big
Little uniform frcition damper.
For achieving the above object, the invention provides technical scheme below：A kind of frcition damper, including being arranged on oblique pull
With the dynamic friction unit of drag-line synchronous vibration on bridge drag-line, and the static friction unit being fixedly installed with respect to cable-stayed bridge pontic,
Described dynamic friction unit constitutes sliding friction cooperation along any direction and static friction unit in the plane perpendicular to drag-line axis；
Described dynamic friction unit is friction plate, and the plate face of friction plate is vertical with drag-line axis, and described static friction unit is the friction that is placed in
Constitute, at the plate face of plate both sides and respectively with friction plate both sides plate face, the two-layer friction pad that sliding friction coordinates；Friction pad is arranged on and props up
On frame, support is fixed on cable-stayed bridge pontic；It is provided with clip with support corresponding position, described clip inner ring surface on described drag-line
It is provided with rubber blanket and drag-line outer ring surface between, described friction plate is arranged on clip outer ring surface；It is mutually flat that support is provided with two-layer
The latch plate of row, and latch plate is parallel with friction plate, described two-layer friction pad is separately fixed on two-layer latch plate.
The method have technical effect that：Dynamic friction unit on drag-line can be along the static friction on any direction and pontic
Unit constitutes sliding friction cooperation, when drag-line produces vibration, produces Relative friction between dynamic friction unit and friction-tight unit,
The vibration that can buffer, absorb on any radial line of drag-line direction, provides full degree of freedom damping for drag-line, substantially increases drag-line
Resistance to shock.
Brief description
Fig. 1 is the structural representation of cable-stayed bridge；
Fig. 2 is the schematic diagram of the present invention, and this figure is the I partial enlarged view of Fig. 1；
Fig. 3, Fig. 4 are the perspective view of the present invention；
Fig. 5 is the front view of the present invention；
Fig. 6 is the left view of the present invention；
Fig. 7 is the clip perspective view of the present invention；
Fig. 8 is the perspective view of another embodiment of clip of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of frcition damper, including being arranged on cable-stayed bridge cable c and can be synchronous with drag-line c
The dynamic friction unit of vibration, and the static friction unit being fixedly installed with respect to cable-stayed bridge pontic B, described dynamic friction unit is hanging down
Directly in the plane of drag-line c-axis line, constitute sliding friction cooperation along any direction and static friction unit.Described dynamic friction unit one
As be arranged on the end of drag-line c i.e. at the position of anchorage zone, can will according to the concrete structure of cable-stayed bridge when actually used
Dynamic friction unit is arranged on upper end and/or the lower end of drag-line c, and accordingly, static friction unit can be arranged on the bridge floor of cable-stayed bridge
And/or on bridge tower.Dynamic friction unit on drag-line c can constitute cunning along any radial line direction with the static friction unit on pontic B
Dynamic friction coordinates, and when drag-line c produces vibration, produces Relative friction between dynamic friction unit and static friction unit, can buffer,
Absorb the vibrational energy in any radial line of drag-line c direction, the full degree of freedom damping in vertical plane is provided for drag-line c, greatly improves
The resistance to shock of drag-line.
As shown in Fig. 2 described dynamic friction unit is friction plate 21, the plate face of described friction plate 21 is vertical with drag-line c-axis line,
Described static friction unit is for constituting sliding friction at the friction plate 21 both sides plate face that is placed in and respectively with friction plate 21 both sides plate face
The two-layer friction pad 17 of cooperation.In this embodiment, dynamic friction unit is friction plate 21, and static friction unit is friction pad 17, typically
For, the area of friction pad 17 is less than the area of friction plate 21, friction pad 17 in the plate face region of friction plate 21 slidably,
The face of friction plate 21 should be sufficiently large, and during guaranteeing that drag-line c produces vibration, friction pad 17 is without departing from the plate face area of friction plate 21
Domain, so ensure that friction plate 21 is uniform in size with the damping that friction pad 17 produces in all directions.But in theory,
When drag-line c produces vibration, as long as there is overlapping region between friction plate 21 and friction pad 17 all the time and can producing sufficiently large
Frictional damping.
Further, as seen in figures 3-6, described friction pad 17 is installed over the mount 10, and described support 10 is fixed on oblique pull
On bridge pontic B；Clip 20, described clip 20 inner ring surface and drag-line c outer shroud are provided with support 10 corresponding position on described drag-line c
It is provided with rubber blanket 22, described friction plate 21 is arranged on clip 20 outer ring surface between face.Rubber blanket 22 can provide one for drag-line c
Fixed buffering and protection, the endoporus of rubber blanket 22 can make many different forms to adapt to the drag-line c of different cross section.
Further, described support 10 is provided with the latch plate 13 that two-layer is parallel to each other, and latch plate 13 and friction plate 21
Parallel, described two-layer friction pad 17 is separately fixed on two-layer latch plate 13.Friction pad 17 is arranged on latch plate 13, a side
Face ensure that friction pad 17 and friction plate 21 remain impaction state, to provide sufficiently large frictional damping, on the other hand,
Also it can be avoided that because the friction plate 21 causing that weares and teares is fitted with friction pad 17 untight phenomenon.
Preferably, described latch plate 13 is provided with installing plate 14, and described installing plate 14 is provided with screwed hole, described screwed hole
Inside it is provided with stud 15, described friction pad 17 is fixed on the inner side end of stud 15, described stud 15 is additionally provided with locking nut
16, described locking nut 16 is resisted against in the outside plate face of installing plate 14.Can be adjusted by the screw-in depth of regulation stud 15
Pressure between section friction pad 17 and friction plate 21, can also compensate to the abrasion of friction pad 17 simultaneously.In addition, friction pad
17 are fixed on stud 15 end face, when friction pad 17 excessive wear needs to change, only need to be backed out stud 15 with spanner, then
Change new friction pad 17, actually friction pad 17 and stud 15 is formed into integral structure, therefore directly more renews
Stud 15.
Clip 20 is usually made of cast iron, and the anti-wear performance of cast iron is poor to wear and tear for a long time it is difficult to bear, and rubs
Plate 21 needs to make using the higher metal material of anti-wear performance, such as rustless steel etc., and therefore friction plate 21 must individually be processed, so
Again friction plate 21 is fixed on clip 20 afterwards, for this reason, the invention provides the mounting means of following two friction plate 21：
As shown in fig. 7, as the preferred version of the present invention, described clip 20 outer ring surface is provided with and radially protrudes out
Wing plate 201, the plate face of described wing plate 201 is vertical with drag-line c-axis line, and described wing plate 201 is provided with for fixing friction plate 21
Draw-in groove, described friction plate 21 is embedded in draw-in groove, described wing plate 201 and friction plate 21 be at least two groups along clip 20 circumference uniformly between
Every arrangement.
As shown in figure 8, another kind of friction plate mounting means that the present invention provides is：Described clip 20 outer ring surface is provided with use
In the protuberance 202 of fixed friction plate 21, it is affixed with this protuberance 202 that described friction plate 21 passes through bolt.
As shown in Figure 3,4, described support 10 includes the annular base 12 affixed with pontic, and symmetrical on annular base 12
Two columns 11 of setting, the inner ring surface of described annular base 12 is provided with anticollision strip 121, and described latch plate 13 is curved, every layer
It is respectively provided with two pieces of latch plates 13, and two pieces of latch plates 13 of same layer are symmetrically fixed on column 11 both sides, this two pieces of latch plates 13
Formed and annular base 12 concentric annular structure, described installing plate 14 is fixed at the middle section position of latch plate 13.Support 10 can
It is directly installed on the end face of dragline anchorage guide frame b, clip 20 prolongs life to annular base 12, when the vibration of drag-line c
When amplitude is excessive, clip 20 can clash into the inner ring surface of annular base 12, now anticollision strip 121 can provide for clip 20 certain
Buffering.
Preferably, described friction plate 21 is made of stainless steel, and described friction pad 17 is made up of wear-resistant macromolecule material.Stainless
Phase mutual friction between steel and macromolecular material, necessarily macromolecular material preferential wear, actual experiment result also indicates that, rustless steel
Between macromolecular material during phase mutual friction, rustless steel will not produce abrasion substantially.Friction pad 17 in the present invention compares friction plate
21 are more convenient for changes, and therefore friction plate 21 is made using rustless steel, and friction pad 17 adopts wear-resistant macromolecule material to make.
Claims (6)
1. a kind of frcition damper it is characterised in that：Upper and can be synchronous with drag-line (c) including being arranged on cable-stayed bridge cable (c)
The dynamic friction unit of vibration, and the static friction unit being fixedly installed with respect to cable-stayed bridge pontic (B), described dynamic friction unit exists
Constitute sliding friction cooperation along any direction and static friction unit in the plane of drag-line (c) axis；Described dynamic friction list
Unit is friction plate (21), and the plate face of friction plate (21) is vertical with drag-line (c) axis, and described static friction unit is the friction plate that is placed in
(21) constitute, at the plate face of both sides and respectively with friction plate (21) both sides plate face, the two-layer friction pad (17) that sliding friction coordinates；Friction
Pad (17) is arranged on support (10), and support (10) is fixed on cable-stayed bridge pontic (B)；Described drag-line (c) is gone up and support (10)
Corresponding position is provided with clip (20), is provided with rubber blanket (22), institute between described clip (20) inner ring surface and drag-line (c) outer ring surface
State friction plate (21) to be arranged on clip (20) outer ring surface；Support (10) is provided with the latch plate (13) that two-layer is parallel to each other, and
Latch plate (13) is parallel with friction plate (21), and described two-layer friction pad (17) is separately fixed on two-layer latch plate (13).
2. frcition damper according to claim 1 it is characterised in that：Described latch plate (13) is provided with installing plate
(14), described installing plate (14) is provided with screwed hole, and described screw thread in the hole is provided with stud (15), and described friction pad (17) is fixed on
On the inner side end of stud (15), described stud (15) is additionally provided with locking nut (16), described locking nut (16) is resisted against
In the outside plate face of installing plate (14).
3. frcition damper according to claim 2 it is characterised in that：Described clip (20) outer ring surface is provided with radially
The wing plate (201) of outward, the plate face of described wing plate (201) is vertical with drag-line (c) axis, and described wing plate (201) is provided with
For fixing the draw-in groove of friction plate (21), described friction plate (21) is embedded in draw-in groove, and described wing plate (201) and friction plate (21) are
At least two groups along clip (20) circumference uniform intervals arrangement.
4. frcition damper according to claim 2 it is characterised in that：Described clip (20) outer ring surface is provided with for solid
Determine the protuberance (202) of friction plate (21), it is affixed with this protuberance (202) that described friction plate (21) passes through bolt.
5. frcition damper according to claim 1 it is characterised in that：Described support (10) includes the ring affixed with pontic
Shape base (12), and upper symmetrically arranged two columns (11) of annular base (12), on the inner ring surface of described annular base (12)
It is provided with anticollision strip (121), described latch plate (13) is curved, every layer is respectively provided with two pieces of latch plates (13), and two pieces of same layer
Latch plate (13) is symmetrically fixed on column (11) both sides, and this two pieces of latch plates (13) are formed and annular base (12) concentric annular knot
Structure, described installing plate (14) is fixed at the middle section position of latch plate (13).
6. frcition damper according to claim 1 it is characterised in that：Described friction plate (21) is made of stainless steel, institute
State friction pad (17) to be made up of wear-resistant macromolecule material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304869.XA CN105178184B (en) | 2015-06-04 | 2015-06-04 | Friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304869.XA CN105178184B (en) | 2015-06-04 | 2015-06-04 | Friction damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178184A CN105178184A (en) | 2015-12-23 |
| CN105178184B true CN105178184B (en) | 2017-02-22 |
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ID=54900574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304869.XA Active CN105178184B (en) | 2015-06-04 | 2015-06-04 | Friction damper |
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| Country | Link |
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| CN (1) | CN105178184B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100958B (en) * | 2017-04-28 | 2019-04-30 | 河海大学 | An Asymmetric Rotor Eddy Current Damper |
| WO2021071935A1 (en) * | 2019-10-07 | 2021-04-15 | Structural Technologies Ip, Llc | In-line damping systems and methods |
| DK180725B1 (en) * | 2020-06-05 | 2022-02-07 | Damptech As | Damper and damper system for damping relative lateral movement between a tensioned cable and a support structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029276A1 (en) * | 2000-10-04 | 2002-04-11 | Robinson Seismic Limited | Vibration damping energy absorber |
| CN100338318C (en) * | 2001-05-09 | 2007-09-19 | 减振技术公司 | Frictional damper for damping movement of structures |
| CN102734367A (en) * | 2012-05-11 | 2012-10-17 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| CN102782357A (en) * | 2009-12-23 | 2012-11-14 | Vsl国际股份公司 | Cable friction damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001248324A (en) * | 2000-03-03 | 2001-09-14 | Shizuo Tsujioka | Friction joint type energy absorbing device for frame |
-
2015
- 2015-06-04 CN CN201510304869.XA patent/CN105178184B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029276A1 (en) * | 2000-10-04 | 2002-04-11 | Robinson Seismic Limited | Vibration damping energy absorber |
| CN100338318C (en) * | 2001-05-09 | 2007-09-19 | 减振技术公司 | Frictional damper for damping movement of structures |
| CN102782357A (en) * | 2009-12-23 | 2012-11-14 | Vsl国际股份公司 | Cable friction damper |
| CN102734367A (en) * | 2012-05-11 | 2012-10-17 | 青岛科而泰环境控制技术有限公司 | Friction damper |
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| Publication number | Publication date |
|---|---|
| CN105178184A (en) | 2015-12-23 |
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