CN1948652A - Piezoelectric friction damper - Google Patents
Piezoelectric friction damper Download PDFInfo
- Publication number
- CN1948652A CN1948652A CN 200610134218 CN200610134218A CN1948652A CN 1948652 A CN1948652 A CN 1948652A CN 200610134218 CN200610134218 CN 200610134218 CN 200610134218 A CN200610134218 A CN 200610134218A CN 1948652 A CN1948652 A CN 1948652A
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- Prior art keywords
- friction
- piezoelectric
- vertical sliding
- piezoelectric ceramic
- bolts
- 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.)
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- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000001012 protector Effects 0.000 claims description 7
- 239000002783 friction material Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 3
- 238000005265 energy consumption Methods 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
This invention relates to a piezoelectric friction damper,comprising cylindrical piezoelectric actuators, actuator protection devices force sensing, sensor protection device, vertical compression boards, the level composite friction plate, the guidance bolts surcharging frames and bolts box. It is characterized in that: bolts guide through the inner box, and through vertical sliding panels and the level of composite friction plate, a friction screw and a slide on the composite board level, the surcharging bolts, piezoelectric ceramic actuators, sensors, driver protection devices, sensor protection device is linked together. The piezoelectric friction damper is convenient in production, has stable performance and high energy consumption, it also can change sliding friction in real-time according to the structural response signal by regulating voltage imposed by piezoelectric ceramic actuators. This invention has the advantages of high energy consumption and easily used structure form. It can connects to high-rise building through support of herringbone or sway brace. It has a certain economic and useful value; it also can be used in the project structural vibration control.
Description
Technical field
The invention belongs to engineering structures vibration damping control field, relate to a kind of damping control device, particularly inhibiting damper is played in the structural vibration reaction under geological process to engineering structures.
Background technology
Frcition damper, damping force is controlled by the size that friction plate presses power indirectly.The basic composition of frcition damper comprises the box of being made up of forward and backward, upper and lower four block plates of bolt connection; the prepressing device of the adjusting contact pressure of forming by precompressed bolt, power sensor and power protector for sensor; the friction plate both sides are stained with friction material; and have a rectangle chute; have circular hole on the vertical sliding panel; guide blot passes friction plate and vertical sliding panel, and the two ends of guide blot are fixed on the last lower steel plate of box by nut.
Frcition damper have simple structure, easy for installation, power consumption property is good, therefore and performance many advantages such as temperature influence not become a kind of passive energy dissipation device commonly used in the engineering.But this type of device frictional force is changeless, thereby, in engineering is used, a lot of restrictions are arranged.Piezoelectric ceramic actuator has electricity to cause distortion, the response time is fast, driving force is big characteristics, is used for the contact pressure of regulating action between friction plate, can significantly improve the passive energy dissipation ability of frcition damper.
Summary of the invention
The object of the present invention is to provide a kind of damping force adjusting, good damping result, the piezoelectric friction damper that makes things convenient for engineering to use rapidly.
Technical scheme of the present invention is as follows: the composition of piezoelectric friction damper is connected by bolt; down; before; the box that back steel plate is formed; by the precompressed bolt; the prepressing device of the adjusting contact pressure that power sensor and power protector for sensor are formed; the friction plate both sides are stained with friction material; and have a rectangle chute; there is screw at two ends, the left and right sides; link to each other with the framework beam slab by bolt; have circular hole on the vertical sliding panel; guide blot passes friction plate and vertical sliding panel; the two ends of guide blot are fixed in by nut on the last lower steel plate of box, between the vertical sliding panel on top and power sensor piezoelectric ceramic actuator and driver protective device are set.The present invention includes like this some features: 1, the compound friction plate is stained with friction material in both sides up and down, and has the rectangle chute, about be connected on the framework by bolt.2, described compound friction plate and vertical sliding panel are one or more layers.3, described guide blot passes the friction plate that has the rectangle chute and has the vertical sliding panel of circular hole, is connected in the last lower steel plate of box by nut.4, described piezoelectric actuator is one or more layers of column type.5, described pretension bolt passes the upper steel plate of box, and links to each other with power sensor, protector for sensor, piezoelectric ceramic actuator, driver protective device.
The present invention places piezoelectric ceramic actuator and driver protective device between the vertical sliding panel of frcition damper and power sensor.Use the precompressed bolt to apply certain precompression to piezoelectric ceramic actuator, under electric field action, piezoelectric ceramic actuator can produce one be directly proportional with electric-field intensity, along axial stretching.The flexible meeting of piezoelectric ceramic actuator causes the change of friction plate contact pressure, because friction factor is a definite value, therefore, the frictional force between the friction plate also can change along with the variation of contact pressure.Such damper is the improved device of traditional friction shock absorber, can be applied to improve the effectiveness in vibration suppression and the adjustable occasion of frcition damper of traditional frcition damper.
The invention solves the uncontrollable defective of frcition damper damping force.Simultaneously, utilized the characteristics that piezoelectric ceramic actuator is swift in response, driving force is big, piezoelectric ceramic actuator applied certain initial pressure with prepressing device, under electric field action, driver can produce one be directly proportional with electric-field intensity, vertically flexible.The present invention be very effectively, energy-dissipating device that can the real time altering friction damping force, can be applied to the vibration damping control field of engineering structures.
Description of drawings
Fig. 1 is a structure of the present invention vertical section schematic diagram.
Fig. 2 is an A-A cross-sectional view among Fig. 1.
Fig. 3 is the vertical view of damper base plate among Fig. 1.
Fig. 4 is the vertical view of damper top board among Fig. 1.
Fig. 5 is the elevation of damper front spring among Fig. 1.
Fig. 6 is the elevation of steel plate behind the damper among Fig. 1.
Fig. 7 is the vertical sliding panel vertical view of Fig. 1 damper.
Fig. 8 is the compound friction plate vertical view of Fig. 1 damper.
Fig. 9 is Fig. 1 protector for sensor sectional drawing and vertical view.
Figure 10 is Fig. 1 piezoelectric ceramic actuator protective device sectional drawing and vertical view.
Among the figure: 1 precompressed bolt; The upper steel plate of 2 boxes; 3 power protector for sensor; 4 power sensors; 5 piezoelectric ceramic actuator protective devices; 6 piezoelectric ceramic actuators; 7 vertical sliding panels; 8 compound friction plates; 9 connect the bolt of box; 10 guide blots; The lower steel plate of 11 boxes; The front spring of 12 boxes; The back steel plate of 13 boxes; 14 screws that link to each other with support; 15 guide blot holes; 16 guide blot holes; 17 threaded precompressed bolts hole; 18 connect the bolt hole of box; 19 guide blots pass the screw of vertical sliding panel; The chute of 20 friction plates; 21 friction materials; 22 bolts hole that are connected with beam slab; The bolt hole that 23 box base plates are connected with the front and back steel plate; The bolt hole that 24 box top boards are connected with the front and back steel plate.
The specific embodiment
For a more detailed description below in conjunction with technical scheme and accompanying drawing to the present invention.
In conjunction with Fig. 1-7.Comprise the outside framework box of being made up of upper steel plate, lower steel plate, front spring and back steel plate, the both sides, front and back of lower steel plate have screw, link to each other with the support of structure by bolt.The precompressed bolt passes the upper steel plate of box; and form prepressing device with power protector for sensor and power sensor; guide blot passes compound friction plate and vertical sliding panel; and be fixed on nut on the upper and lower steel plate of box; have circular hole on the vertical sliding panel, have the rectangle slotted eye on the compound friction plate, and be stained with friction material with vertical sliding panel position contacting in both sides; there is screw at two ends, the left and right sides, link to each other with the framework beam slab by bolt.Wherein, compound friction plate and vertical sliding panel can be that one deck also can be more than one deck; Piezoelectric ceramic actuator is column type, directly is pressed on the uppermost vertical sliding panel, is added with protective device above the piezoelectric ceramic actuator.
Claims (1)
1; a kind of piezoelectric friction damper; by precompressed bolt (1); upper steel plate (2) lower steel plate (11) front spring (12) the back steel plate (13) of the outside framework box that bolt (9) connects; power protector for sensor (3); power sensor (4); piezoelectric ceramic actuator protective device (5); piezoelectric ceramic actuator (6); vertical sliding panel (7); compound friction plate (8) and guide blot (10) are formed; it is characterized in that: guide blot (10) passes the inner chamber of box; and by vertical sliding panel (7) and compound friction plate (8); have screw (19) on the vertical sliding panel (7); have chute (20) on the compound friction plate (8); and the part that contacts with vertical sliding panel (7) is stained with friction material (21); compound friction plate (8) and vertical sliding panel (7) are one or more layers; precompressed bolt (1) passes the upper steel plate (2) of box, contacts mutually with piezoelectric ceramic actuator (6) and power sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610134218 CN1948652A (en) | 2006-11-06 | 2006-11-06 | Piezoelectric friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610134218 CN1948652A (en) | 2006-11-06 | 2006-11-06 | Piezoelectric friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1948652A true CN1948652A (en) | 2007-04-18 |
Family
ID=38018265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610134218 Pending CN1948652A (en) | 2006-11-06 | 2006-11-06 | Piezoelectric friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1948652A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153482A (en) * | 2014-09-05 | 2014-11-19 | 大连理工大学 | Frame-shear piezoelectric friction damping device |
| CN111827506A (en) * | 2020-07-29 | 2020-10-27 | 黄淮学院 | Dual-piezoelectric semi-active inerter mass damper |
-
2006
- 2006-11-06 CN CN 200610134218 patent/CN1948652A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153482A (en) * | 2014-09-05 | 2014-11-19 | 大连理工大学 | Frame-shear piezoelectric friction damping device |
| CN104153482B (en) * | 2014-09-05 | 2016-07-06 | 大连理工大学 | The shearing piezoelectricity friction damping unit of frame structure |
| CN111827506A (en) * | 2020-07-29 | 2020-10-27 | 黄淮学院 | Dual-piezoelectric semi-active inerter mass damper |
| CN111827506B (en) * | 2020-07-29 | 2021-09-21 | 黄淮学院 | Dual-piezoelectric semi-active inerter mass damper |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |