CN210105434U - Intelligent friction damper capable of monitoring pre-pressure change - Google Patents
Intelligent friction damper capable of monitoring pre-pressure change Download PDFInfo
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- CN210105434U CN210105434U CN201920428208.1U CN201920428208U CN210105434U CN 210105434 U CN210105434 U CN 210105434U CN 201920428208 U CN201920428208 U CN 201920428208U CN 210105434 U CN210105434 U CN 210105434U
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Abstract
The utility model relates to an intelligent friction damper capable of monitoring the pre-pressure change, which belongs to the field of shock absorption of building structures and mainly comprises a driven friction plate and a driving friction plate; a friction material layer is arranged between the adjacent driving friction plate and the driven friction plate, and driving friction plate long holes extending along the length direction are formed in all the driving friction plates and the friction material layer; along the stacking direction of the friction plates, bolts penetrate through the driven friction plates and the long holes of the driving friction plates to connect the driven friction plates and the driving friction plates together, and nuts are arranged at the end parts of the screws; an intelligent gasket is arranged between a nut of the bolt and an adjacent driven friction plate, and an intelligent gasket is arranged between the nut and the adjacent driven friction plate; the utility model discloses bolted connection position at traditional friction type attenuator has increased the intelligent gasket that uses piezoelectricity or optic fibre, cooperation cloud framework system for the precompression change of in time monitoring bolt becomes possible, has ensured overall structure's safety and stability performance.
Description
Technical Field
The utility model belongs to building structure's shock attenuation field, in particular to can monitor intelligent friction type attenuator that pre-pressure changes.
Background
The placement of friction-type dampers in buildings is an important method of reducing the loss of personnel or property to buildings in earthquakes, typhoons or other destructive disasters. The current friction type damper considers how to consume more energy input by earthquake, and takes less consideration to the failure of the friction type damper. However, most friction type dampers rely on the pre-pressure provided by the bolt to cause the friction material to slide under pressure and consume energy. Therefore, when the pre-pressure of the bolt caused by various complex factors is reduced, the pressure between the friction plates is reduced, so that the friction force between the plates is greatly reduced, the friction energy consumption performance is greatly lower than expected, and a lot of unpredictable hazards are often brought in engineering projects.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses bolted connection position at traditional friction type attenuator has increased the intelligent gasket that uses piezoelectricity or optic fibre, replaces the ordinary bolt gasket in the friction type attenuator to cooperation cloud framework system makes the precompression change of in time monitoring bolt possible, is convenient for step up immediately or changes not hard up bolt, has ensured overall structure's safety and stability performance.
The technical scheme of the utility model:
an intelligent friction damper capable of monitoring pre-pressure change comprises at least two driven friction plates which are stacked together, and a driving friction plate clamped between the adjacent driven friction plates; a friction material layer is arranged between the adjacent driving friction plates and the adjacent driven friction plates, and driving friction plate long holes extending along the length direction are formed in all the driving friction plates; along the stacking direction of the friction plates, bolts penetrate through the driven friction plates and the long holes of the driving friction plates to connect the driven friction plates and the driving friction plates together, and nuts are arranged at the end parts of the screws; an intelligent gasket is arranged between a nut of the bolt and an adjacent driven friction plate, and an intelligent gasket is arranged between the nut and the adjacent driven friction plate;
the intelligent gasket is connected with the signal acquisition system, the transmission signal result is processed by a computer, and the processing result is connected to the cloud end and the cloud architecture system.
Furthermore, the intelligent gasket is divided into a piezoelectric material intelligent gasket and an optical fiber material intelligent gasket.
Further, the transmission mode includes one or both of wired transmission and wireless transmission.
The utility model discloses a theory of operation:
the driving friction plate and the driven friction plate extrude the friction plates through bolts to provide pre-pressure to clamp the plates; under the action of external force, the driving friction plate and the driven friction plate move relatively to generate friction, so that the earthquake energy is dissipated, and the safety of the building under the earthquake is protected.
The intelligent gasket device based on the piezoelectric material mainly comprises two parts, wherein one part is a slotted gasket, the other part is piezoelectric ceramic arranged in the intelligent gasket device, and the intelligent gaskets arranged on the friction type damper work in pairs, wherein one transmits signals and the other receives signals. When the bolt is loosened, the connected interface is changed, the path through which the ultrasonic signal transmitted by the intelligent gasket passes is also changed, the received ultrasonic signal is changed, the state of the bolt connection interface can be judged according to the received signal change information, the change of the pre-pressure of the friction type damper is reflected, and the monitoring effect is achieved.
The intelligent gasket device based on the optical fiber material is also composed of two parts, wherein one part is a gasket with a circumferential groove, and the other part is the optical fiber material wound in the groove. The intelligent gasket adopts the fiber bragg grating, the working principle of the fiber bragg grating is applied, when the bolt is loosened, the annular notch is changed, the refractive index and the period of the light wave in the optical fiber are also changed, the received signal is also changed, the state of a bolt connection interface can be judged according to the change information, the change of the pre-pressure of the friction damper is reflected, and the monitoring effect is achieved.
The utility model has the advantages and the beneficial effects
The utility model has the advantages as follows:
1. by means of a signal transmission technology, the pre-pressure change of the friction type damper which is difficult to detect is digitalized and intelligentized;
2. the friction damper can be actively monitored, and the pre-pressure change of the friction damper can be evaluated and analyzed in real time;
3. the utility model discloses compare original friction type attenuator, the part changes less, and the practicality is strong, easy to maintain.
Drawings
FIG. 1 is a schematic overall outline of the present invention;
FIG. 2 is a top view of the active friction plate and the friction material layer of the present invention;
FIG. 3 is a flow chart of the transmission process of the present invention;
in the figure, 1 is a driven friction plate, 2 is a driving friction plate, 3 is a friction material layer, 4 is a driving friction plate long hole, 5 is a bolt, and 6 is an intelligent gasket.
Detailed Description
For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): as shown in fig. 1 to 3, an intelligent friction type damper capable of monitoring a pre-pressure change includes at least two driven friction plates 1 stacked together, and a driving friction plate 2 sandwiched between the adjacent driven friction plates 1; a friction material layer 3 is arranged between the adjacent driving friction plates 2 and the driven friction plates 1, and driving friction plate long holes 4 extending along the length direction are formed in all the driving friction plates 2; along the stacking direction of the friction plates, a bolt 5 penetrates through the driven friction plate 1 and the driving friction plate long hole 4 to connect the driven friction plate 1 and the driving friction plate 2 together, and a nut is arranged at the end part of the screw rod; an intelligent gasket 6 is arranged between the nut of the bolt 5 and the adjacent driven friction plate 1, and the intelligent gasket 6 is arranged between the nut and the adjacent driven friction plate 1; the intelligent gasket 6 is divided into a piezoelectric material intelligent gasket and an optical fiber material intelligent gasket.
The intelligent gasket 6 is connected with a signal acquisition system, a transmission signal result is processed by a computer, a processing result is connected to a cloud end and a cloud architecture system, and the transmission mode comprises one or two of wired transmission and wireless transmission.
If the pre-pressure of the bolt 5 changes, such as the bolt 5 is loosened, the signal of the intelligent gasket 6 is conducted through a wired or wireless signal acquisition system, the pre-pressure change of the intelligent friction type damper capable of monitoring the pre-pressure change is reflected on a cloud-structured system in time, and therefore the pre-warning effect is achieved so that safety measures can be taken.
The driving friction plate 2 and the driven friction plate 1 extrude the friction plates through bolts to provide pre-pressure to clamp the plates; under the action of external force, the driving friction plate 2 and the driven friction plate 1 move relatively to generate friction, so that the earthquake energy is dissipated, and the safety of a building under the earthquake is protected.
The pre-pressure change of the intelligent friction type damper capable of monitoring the pre-pressure change is reflected on a cloud-structured system in time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The utility model provides a can monitor intelligent friction type attenuator that pre-pressure changes which characterized in that: comprises at least two driven friction plates (1) which are stacked together, and a driving friction plate (2) which is clamped between the adjacent driven friction plates (1); a friction material layer (3) is arranged between the adjacent driving friction plates (2) and the driven friction plates (1), and driving friction plate long holes (4) extending along the length direction are formed in all the driving friction plates (2); along the stacking direction of the friction plates, a bolt (5) penetrates through the driven friction plate (1) and the driving friction plate slot (4) to connect the driven friction plate (1) and the driving friction plate (2) together, and a nut is arranged at the end part of the screw rod; an intelligent gasket (6) is arranged between a nut of the bolt (5) and the adjacent driven friction plate (1), and the intelligent gasket (6) is arranged between the nut and the adjacent driven friction plate (1);
the intelligent gasket (6) is connected with the signal acquisition system, the transmission signal result is processed by a computer, and the processing result is connected to the cloud end and the cloud architecture system.
2. An intelligent friction-type damper capable of monitoring variation in pre-pressure according to claim 1, wherein: the intelligent gasket (6) is divided into a piezoelectric material intelligent gasket and an optical fiber material intelligent gasket.
3. An intelligent friction-type damper capable of monitoring variation in pre-pressure according to claim 1, wherein: the transmission mode includes one or two of wired transmission and wireless transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428208.1U CN210105434U (en) | 2019-04-01 | 2019-04-01 | Intelligent friction damper capable of monitoring pre-pressure change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428208.1U CN210105434U (en) | 2019-04-01 | 2019-04-01 | Intelligent friction damper capable of monitoring pre-pressure change |
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| Publication Number | Publication Date |
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| CN210105434U true CN210105434U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920428208.1U Active CN210105434U (en) | 2019-04-01 | 2019-04-01 | Intelligent friction damper capable of monitoring pre-pressure change |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370033A (en) * | 2022-09-23 | 2022-11-22 | 北京固力同创工程科技有限公司 | Friction damper with integrated earthquake damage monitoring and friction damper monitoring system |
-
2019
- 2019-04-01 CN CN201920428208.1U patent/CN210105434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370033A (en) * | 2022-09-23 | 2022-11-22 | 北京固力同创工程科技有限公司 | Friction damper with integrated earthquake damage monitoring and friction damper monitoring system |
| CN115370033B (en) * | 2022-09-23 | 2024-03-29 | 北京固力同创工程科技有限公司 | Friction damper with integrated vibration damage monitoring function and friction damper monitoring system |
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