CN101701613A - Linear displacement friction damper - Google Patents
Linear displacement friction damper Download PDFInfo
- Publication number
- CN101701613A CN101701613A CN200910210939A CN200910210939A CN101701613A CN 101701613 A CN101701613 A CN 101701613A CN 200910210939 A CN200910210939 A CN 200910210939A CN 200910210939 A CN200910210939 A CN 200910210939A CN 101701613 A CN101701613 A CN 101701613A
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- China
- Prior art keywords
- cylinder barrel
- groove
- friction ring
- friction
- damper
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a linear displacement friction damper, which can be applied in architectural construction vibration attenuation control and engine vibration attenuation and the invention comprises a cylinder barrel, a friction ring and a sliding shaft. The linear displacement friction damper is characterized in that a groove is arranged at the middle part of the inner wall of the cylinder barrel, and the inner diameters of the rest inner walls of the cylinder barrel outside the groove are identical; the friction ring is arranged in the groove of the inner wall of the cylinder barrel and aligns with the center of the groove; the size of the groove along the length direction of the cylinder barrel is equal to or smaller than the size of the friction ring along the axial direction; the size of the outer diameter of the friction ring is smaller than or equal to the size of the inner diameter of the groove of the cylinder barrel but greater than the size of the inner diameters of the rest inner walls of the cylinder barrel outside the groove; and the axis of the friction ring is overlapped and connected with the axis of a sliding shaft into a whole. The damper in the invention can satisfy vibration attenuation requirement of strong vibration and week vibration of the architectural construction.
Description
Technical field
The present invention relates to a kind of linear displacement friction damper, can be applicable to control of building structure vibration damping and locomotive vibration damping.Also can be used for making the damper in fields such as being used for space flight, electronics, chemical industry, the energy, instrument, medical treatment, health.
Background technique
Frcition damper is a kind of control gear that a class is utilized the friction energy-dissipating dissipation vibrational energy of rubbing surface.The core position of common frcition damper is the one or more pairs of rubbing surfaces with certain precompression, and external force need overcome the rubbing surface generation relative movement that frictional force between the rubbing surface just can be ordered about damper.The major defect of conventional frcition damper comprises:
1). the rubbing surface of general frcition damper for building is in high compressive pre-stress state all the time, and the rubbing surface friction factor may change under this long-term high-stress state, departs from the working state of desired design.
2). the precompression of general frcition damper and the attribute of rubbing surface all can not change automatically, thereby its surface friction drag that provides also remains unchanged usually, and the hysteresis loop of damper is near rectangle.Damper with rectangle hysteresis loop is in engineering is used, and the most key problem is how to determine the action intensity of vibrating load, because the maximum friction resistance of this type of damper is in case determine just can not change.Such as in the antidetonation and wind force proofing design of building structure, if according to the situation design frcition damper of bestirring oneself by force under using, then this damper weak bestir oneself with under can not slide, if and determine force of sliding friction by the weak situation of shaking, then this damper bestir oneself by force with under will not reach desirable effectiveness in vibration suppression because the tonnage of exerting oneself is too small.Because the intensity of the geological process that faces of building structure can not accurately predict, thus in building structure, adopt this type of frcition damper as damping means exist shake by force and a little less than the problem of shaking and can not take into account.
Summary of the invention
The present invention is in order to solve the above-mentioned defective of existing frcition damper, a kind of linear displacement friction damper has been proposed, each parts of damper are in unstress state when the behavior of structure friction, damper work the time then provides with the linear damping force that increases of displacement amplitude, this damper can satisfy simultaneously that engineering structure is shaken by force and a little less than vibration damping requirement when shaking.
To achieve these goals, the present invention has taked following technological scheme:
A kind of linear displacement friction damper includes cylinder barrel, friction ring, sliding axle, it is characterized in that: the described cylinder barrel middle part of wall within it is fluted, and the internal diameter of the cylinder barrel remaining part inwall that groove is outer is identical; Friction ring be installed on inner wall of cylinder groove and with the groove center-aligned; Be equal to or less than the axial length dimension of friction ring along the groove size of cylinder barrel length direction, the outside dimension of friction ring is less than or equal to the internal diameter size of cylinder barrel groove, but greater than the internal diameter size of the outer cylinder barrel remaining part inwall of groove; The dead in line of friction ring and sliding axle is connected as a whole.
Two end faces of described friction ring are provided with circular arc chamfering towards a side of inner wall of cylinder.
Described groove two ends and cylinder barrel remaining part inwall jointing place are provided with circular arc chamfering.
The linear displacement friction damper that the present invention proposes can obtain following beneficial effect:
When 1) the damper sliding axle did not slide with respect to cylinder barrel, friction ring was embedded in the inner wall of cylinder groove, contactless stress between friction ring and the inner wall of cylinder, and friction ring and cylinder barrel also are in unstress state.
2) when damper is worked, sliding axle will drive the inboard wall groove that friction ring leaves cylinder barrel gradually, and clamp-on the cross section of cylinder barrel except that groove, because the external diameter of friction ring is greater than the internal diameter at cylinder barrel other positions except that inboard wall groove, thereby all will produce erection stress in friction ring and the cylinder barrel, on surface of contact, produce direct stress and friction stress simultaneously.The relative cylinder barrel slip of sliding axle amplitude is big more, and it is big more that friction ring is clamp-oned in the cylinder barrel surface of contact with its inwall, and the surface of contact surface friction drag of Chan Shenging also just increases thereupon thereupon; When sliding axle when maximum displacement is returned, the surface of contact of friction ring and inner wall of cylinder progressively reduces, the surface friction drag that damper provides also just reduces thereupon.In this process, the damping force that damper provides is with the displacement linear change of sliding axle.
3) damper of the present invention's proposition provides the linear friction damping.The damping force of this damper will be with the increase of distortion amplitude linear the increase, can satisfy simultaneously that engineering structure is shaken by force and a little less than vibration damping requirement when shaking.
Description of drawings:
Fig. 1 is the unitary construction figure of the linear displacement friction damper that proposes of the present invention;
Fig. 2 is the a-a sectional drawing of the linear damper of the displacement that proposes of the present invention;
Fig. 3 is friction ring and the initial contact position of cylinder barrel and the relative size detail drawing of the embodiment of the invention 1;
Fig. 4 is the hysteresis loop of the embodiment of the invention 1;
Fig. 5 is friction ring and the initial contact position of cylinder barrel and the relative size detail drawing of the embodiment of the invention 2;
Fig. 6 is the hysteresis loop of the embodiment of the invention 2;
Among the figure: 1, cylinder barrel, 2, friction ring, 3, sliding axle, 4, groove, U, displacement, F, power.
Embodiment
Below in conjunction with embodiment the utility model is further specified.
Embodiment 1:
As shown in Figure 3-4, a kind of linear displacement friction damper includes cylinder barrel 1, friction ring 2, sliding axle 3, and cylinder barrel 1 middle part of wall within it is fluted 4, and the internal diameter of the cylinder barrel 1 remaining part inwall that groove 4 is outer is identical; Friction ring 2 be installed on cylinder barrel 1 inwall groove 4 places and with groove 4 center-aligned; Equal the axial length dimension of friction ring 2 along groove 4 sizes of cylinder barrel length direction, friction ring 2 is embedded in the groove 4 of cylinder barrel 1 inwall, the outside dimension of friction ring 2 is less than or equal to the internal diameter size at cylinder barrel 1 groove 4 places, but greater than the internal diameter size of the outer cylinder barrel 1 remaining part inwall of groove 4; The dead in line of friction ring 2 and sliding axle 3 is connected as a whole.Two end faces of friction ring 2 are provided with circular arc chamfering towards a side of cylinder barrel 1 inwall.And groove 4 two ends and cylinder barrel 1 remaining part inwall jointing place also are provided with circular arc chamfering.
The present embodiment linear displacement friction damper can provide the triangle hysteresis loop, Figure 4 shows that the hysteresis loop of present embodiment linear displacement friction damper.
Embodiment 2:
As Fig. 5-6, a kind of linear displacement friction damper includes cylinder barrel 1, friction ring 2, sliding axle 3, and cylinder barrel 1 middle part of wall within it is fluted 4, and the internal diameter of the cylinder barrel 1 remaining part inwall that groove 4 is outer is identical; Friction ring 2 be installed on cylinder barrel 1 inwall groove 4 places and with groove 4 center-aligned; Along groove 4 sizes of cylinder barrel length direction axial length dimension less than friction ring 2, friction ring 2 is placed in groove 4 places of cylinder barrel 1 inwall, the outside dimension of friction ring 2 is less than or equal to the internal diameter size at cylinder barrel 1 groove 4 places, but greater than the internal diameter size of the outer cylinder barrel 1 remaining part inwall of groove 4; The dead in line of friction ring 2 and sliding axle 3 is connected as a whole.Two end faces of friction ring 2 are provided with circular arc chamfering towards a side of cylinder barrel 1 inwall.And groove 4 two ends and cylinder barrel 1 remaining part inwall jointing place also are provided with circular arc chamfering.
The present embodiment linear displacement friction damper can provide to take up sliding platform triangle hysteresis loop, Figure 6 shows that the hysteresis loop of present embodiment linear displacement friction damper.
More than be two exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.
Claims (3)
1. a linear displacement friction damper includes cylinder barrel (1), friction ring (2), sliding axle (3), it is characterized in that: described cylinder barrel (1) is the middle part fluted (4) of wall within it, and the internal diameter of cylinder barrel (1) the remaining part inwall that groove (4) is outer is identical; The groove (4) that friction ring (2) is installed on cylinder barrel (1) inwall locate and with groove (4) center-aligned; Be equal to or less than the axial length dimension of friction ring (2) along groove (4) size of cylinder barrel length direction, the outside dimension of friction ring (2) is less than or equal to the internal diameter size that cylinder barrel (1) groove (4) is located, but greater than the internal diameter size of outer cylinder barrel (1) the remaining part inwall of groove (4); Friction ring (2) is connected as a whole with the dead in line of sliding axle (3).
2. linear displacement friction damper according to claim 1 is characterized in that: two end faces of described friction ring (2) are provided with circular arc chamfering towards a side of cylinder barrel (1) inwall.
3. linear displacement friction damper according to claim 1 and 2 is characterized in that: described groove (4) two ends and cylinder barrel (1) remaining part inwall jointing place are provided with circular arc chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910210939XA CN101701613B (en) | 2009-11-13 | 2009-11-13 | Linear displacement friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910210939XA CN101701613B (en) | 2009-11-13 | 2009-11-13 | Linear displacement friction damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101701613A true CN101701613A (en) | 2010-05-05 |
| CN101701613B CN101701613B (en) | 2012-07-11 |
Family
ID=42156537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910210939XA Expired - Fee Related CN101701613B (en) | 2009-11-13 | 2009-11-13 | Linear displacement friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101701613B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104948631A (en) * | 2015-07-03 | 2015-09-30 | 上海上材减振科技有限公司 | Parallel type adjustable variable friction damper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1289870B1 (en) * | 1997-01-08 | 1998-10-19 | Cima Comp It Molle Acciaio | CLUTCH SHOCK ABSORBER PARTICULARLY DESIGNED FOR WASHING MACHINES OR SIMILAR |
| DE50311256D1 (en) * | 2003-01-30 | 2009-04-16 | Blum Gmbh Julius | DAMPERS PARTICULARLY FOR MOVING FURNITURE PARTS |
| FR2869662B1 (en) * | 2004-04-30 | 2006-06-23 | Lacroix Soc E | ADAPTABLE FRICTION SHOCK DEVICE |
| NZ540316A (en) * | 2005-05-24 | 2007-02-23 | Geoffrey John Thompson | Kinetic energy-absorbing and force-limiting connecting means |
| DE102005038953A1 (en) * | 2005-08-16 | 2007-02-22 | Suspa Holding Gmbh | damper |
| CN201526633U (en) * | 2009-11-13 | 2010-07-14 | 北京工业大学 | Displacement linear friction damper |
-
2009
- 2009-11-13 CN CN200910210939XA patent/CN101701613B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102734367B (en) * | 2012-05-11 | 2015-06-10 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| CN104948631A (en) * | 2015-07-03 | 2015-09-30 | 上海上材减振科技有限公司 | Parallel type adjustable variable friction damper |
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| Publication number | Publication date |
|---|---|
| CN101701613B (en) | 2012-07-11 |
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Granted publication date: 20120711 Termination date: 20121113 |