CN201526633U - Displacement linear friction damper - Google Patents
Displacement linear friction damper Download PDFInfo
- Publication number
- CN201526633U CN201526633U CN2009202789488U CN200920278948U CN201526633U CN 201526633 U CN201526633 U CN 201526633U CN 2009202789488 U CN2009202789488 U CN 2009202789488U CN 200920278948 U CN200920278948 U CN 200920278948U CN 201526633 U CN201526633 U CN 201526633U
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- CN
- China
- Prior art keywords
- cylinder barrel
- groove
- friction ring
- damper
- friction
- 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.)
- Expired - Fee Related
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- Vibration Dampers (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to a displacement linear friction damper, which can be applied to damping control of building structure and locomotive damping, and comprises a cylinder barrel, a friction ring and a slide shaft. The damper is characterized in that a groove is formed in the middle on the inner wall of the cylinder barrel, and the inner diameters at the rest part on the inner wall of the cylinder barrel except the groove are identical; the friction ring is mounted in the groove on the inner wall of the cylinder barrel and is align with the center of the groove; the groove dimension along the length direction of the cylinder barrel is equal or smaller than the axial length of the friction ring; the external diameter dimension of the friction ring is smaller than or equal to the inner diameter dimension of the cylinder barrel in the position of the groove, but greater than the inner diameter dimension on the inner wall of the cylinder barrel except the groove; and the axes of the friction ring and the slide shaft are superposed and connected as a whole. The damper provided by the utility model can satisfy the damping requirements in strong vibration and weak vibration of an engineering structure at the same time.
Description
Technical field
The utility model 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.
The model utility content
The utility model 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 utility model has been 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 utility model 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 that the utility model proposes 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 the utility model proposes;
Fig. 2 is the a-a sectional drawing of the linear damper of the displacement that the utility model proposes;
Fig. 3 is the utility model embodiment 1 friction ring and initial contact position of cylinder barrel and a relative size detail drawing;
Fig. 4 is the utility model embodiment 1 a hysteresis loop;
Fig. 5 is the utility model embodiment 2 friction ring and initial contact position of cylinder barrel and a relative size detail drawing;
Fig. 6 is the utility model embodiment 2 a hysteresis loop;
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 utility model, enforcement of the present utility model 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 |
|---|---|---|---|
| CN2009202789488U CN201526633U (en) | 2009-11-13 | 2009-11-13 | Displacement linear friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202789488U CN201526633U (en) | 2009-11-13 | 2009-11-13 | Displacement linear friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526633U true CN201526633U (en) | 2010-07-14 |
Family
ID=42517919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202789488U Expired - Fee Related CN201526633U (en) | 2009-11-13 | 2009-11-13 | Displacement linear friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701613B (en) * | 2009-11-13 | 2012-07-11 | 北京工业大学 | Linear displacement friction damper |
-
2009
- 2009-11-13 CN CN2009202789488U patent/CN201526633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701613B (en) * | 2009-11-13 | 2012-07-11 | 北京工业大学 | Linear displacement friction damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20121113 |