CN105525697B - The intelligent bypass type fluid linking damper that stacked piezoelectric driver is adjusted - Google Patents
The intelligent bypass type fluid linking damper that stacked piezoelectric driver is adjusted Download PDFInfo
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- CN105525697B CN105525697B CN201610057128.0A CN201610057128A CN105525697B CN 105525697 B CN105525697 B CN 105525697B CN 201610057128 A CN201610057128 A CN 201610057128A CN 105525697 B CN105525697 B CN 105525697B
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- bypass line
- stacked piezoelectric
- piezoelectric driver
- piston
- cylinder barrel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to the intelligent bypass type fluid linking dampers that a kind of stacked piezoelectric driver is adjusted, and the guide rod of piston, promotion piston motion including the cylinder barrel with master cylinder and secondary cylinder, and in cylinder barrel, the guide rod is fixedly connected with the piston；Viscose liquids damping material is housed inside the cylinder barrel；There is bypass line, the two-port of the bypass line is connected to the master cylinder, and communicating position is located at the piston two sides on the cylinder barrel；The bypass line has adjustment portion, and stacked piezoelectric driver is equipped in adjustment portion, and the adjustment portion adjusts the circulation caliber of the bypass line under stacked piezoelectric driver driving.The present invention can reduce time-delay and improve power output, to meet civil engineering under geological process the needs of shockproof control.
Description
Technical field
The present invention relates to civil engineering structure energy-dissipating and shock-absorbing semi- active control technical fields, are specifically related to a kind of with big
The intelligent bypass type fluid linking damper of power output, adjustable multiple height and fast response time, uses based on stacked piezoelectric driver
Piezoelectricity valve regulation viscous damping power.
Background technique
Viscid fluid energy dissipation damper (Viscous Fluid Damper, i.e. VFD, abbreviation fluid linking damper), refers to logical
It crosses viscose liquids and flows generation damping, dissipation vibrational energy, viscid hydromechanical correlative study in piston hole and/or gap
It is mainly related to the movement velocity of piston to show this damping force, so being a kind of speed relationship type energy dissipation damper.The type
Damper is general as shown in Figure 1, by cylinder barrel (including master cylinder 1 and secondary cylinder 2), piston 3, damping hole 4, leading rod 5 and secondary guide rod 6 etc.
Part forms, and fills viscous flow body in cylinder barrel, to generate larger damping force, is also formed using the sealing of cylinder barrel maximum reachable
The oil pressure (size of the occurrence of oil pressure damping force needed for damping determines) of 200MPa or so, piston is along cylinder barrel longitudinal direction at this time
It moves reciprocatingly, and there is appropriate aperture to become damping hole (and/or mechanical engagement gap between piston and cylinder barrel) on piston, it is viscid
Fluid damping material passes through from piston damping hole high speed, can generate biggish viscous damping power.Civil engineering structure is used glutinous
The cylinder barrel of stagnant damper is generally manufactured and designed that (this and frcition damper are designed by enterprise in charge of construction by large-scale brand machinery plant
It is significantly different with in-site installation), cylinder barrel material can often use high strength alloy steel, have good leakproofness and resistance to pressure energy
Power can provide very big damping (damping force is more order of magnitude greater than frcition damper) so cylinder barrel can bear very big oil pressure,
The vibration that civil engineering structure can thus be efficiently reduced, because of the damper relative to mechanical engineering field, civil engineering
Feature is that the quality of works is especially huge, and the damping needed also tends to several orders of magnitude bigger than machinery field.Equally be due to
The reason of being machined factory's high precision, there are also properties of product stabilization, damping force power output precision height (to substantially increase structure for it
The controllability of seismic response, and be convenient for the calculating of seismic structural response), durability and temperature stablize the advantages that also especially good.
Before above-mentioned advantage shows that fluid linking damper has wide application in civil engineering structure antidetonation and anti-wind control
Scape；Since the 1970s, the energy-dissipating and shock-absorbing control of civil engineering structure gradually it has been widely used in.In this process
In, the developed economies country such as the Italy in the U.S., Japan and Europe has taken the lead in being applied to Practical Project, and then the world is each
The city of the key city of state, especially Areas of High Earthquake Intensity is also successively put into the shockproof control of its landmark building practical
Engineer application.In recent years, the key city (the especially megapolis such as Beijing and Tianjin) in the highlight lines area in China also by
Gradually start practical implementation, wherein Tyler Corporations of the U.S. (Taylor Devices Inc.), Shanghai Inst. of Materials and Liuzhou
The product of Ou Wei nurse company etc. is applied quite extensively at home, has especially been compared in the vibration control application of large bridge
It is universal, such as: Beijing Olympic Games Pan Gu's grand sight skyscraper, the seismic hardening of Beijing train Beijing West Railway Station, Construction of Hangzhou Bay Cross-sea Bridge and
Port Zhuhai and Macao bridge built etc..
The viscous damping power of current fluid linking damper design is unadjustable, leads to the damping effect of its civil engineering structure
It is very limited, greatly limit the application range of fluid linking damper.Such as the top scholar Kelly in U.S. shock insulation field already refers to
Fluid linking damper is installed in Seismic Isolation of Isolation Layer out, will lead to the acceleration and interlayer for amplifying Seismic Isolation of Isolation Layer superstructure in small shake and middle shake
Displacement, that is to say, that reduce isolating affection and isolating affection is even reduced to zero, along with installation fluid linking damper somewhat expensive
The characteristics of, cause its engineer application range to be greatly affected.
The Patten W. et al. in the U.S. in 1998 is mounted with to utilize conventional solenoid valve on the highway bridge of U.S. Okahoma
Come the variable orifices fluid linking damper controlled, and field measurement is carried out, the result of actual measurement shows that, which can be significantly
It reduces bridge structure caused by vehicle to vibrate, to extend the service life of highway bridge on the original basis up to 40 years.2000
Year, first Intelligent Hybrid shock-insulation building is built up in Japanese Keio university in the world, is the University Engineering Department institute building, this is done
Public and test building is exactly to use variable orifices fluid linking damper and laminated rubber damping bearing as earthquake protection system.
But traditional solenoid valve is influenced by magnetic hysteresis and machinery inertial, response speed, which is difficult to meet civil engineering, to exist
The demand of shockproof control under geological process.Furthermore the power output of electromagnetic motor is also not big enough, causes to directly drive spool difficulty,
And have to amplify low power electric signal by hydraulic control mode, the response time is hydraulic using grade B servo valve
System further elongation, therefore the shockproof control design and analysis of pervious variable orifice fluid linking damper is required to consider time lag.It breathes out
The test of work great Li favour et al. proves that the applying frequency of solenoid valve variable orifice damper is in 2Hz hereinafter, time-delay is obvious.
Summary of the invention
According to Modern piezoelectric theory, the electric field strength of the electrostrictive amount and application of piezoceramic material on it is at just
Than being referred to as the principle of inverse piezoelectric effect using this, it is an object of the invention to design one kind to include bypass line and fold
It is laminated the intelligent fluid linking damper of electric drive, the circulation caliber of bypass line is adjusted using stacked piezoelectric driver, to adjust
Viscous damping power is saved, which can reduce time-delay and improve power output, exist to meet civil engineering
The demand of shockproof control under geological process.
Specifically, the intelligent bypass type fluid linking damper that a kind of stacked piezoelectric driver proposed by the present invention is adjusted, including
Cylinder barrel with master cylinder and secondary cylinder, and the guide rod of piston, promotion piston motion in cylinder barrel, the guide rod and the work
Plug is fixedly connected；Viscose liquids damping material is housed inside the cylinder barrel；There is bypass line, the bypass pipe on the cylinder barrel
The two-port on road is connected to the master cylinder, and communicating position is located at the piston two sides；The bypass line, which has, to be adjusted
Section portion, stacked piezoelectric driver is equipped in adjustment portion, and the adjustment portion adjusts institute under stacked piezoelectric driver driving
State the circulation caliber of bypass line.
In a further preferred embodiment of the present invention, the adjustment portion is one section of hose in the bypass line, caliber
Accordingly change under stacked piezoelectric driver driving, to realize the adjusting of the circulation caliber to the bypass line.
In a further preferred embodiment of the present invention, the cylinder barrel, piston and guide rod are high-strength stainless steel.
In a further preferred embodiment of the present invention, the adjustment portion is specially stainless steel flexible hose；The bypass line packet
The stainless steel flexible hose is included, and is connected to two sections of high strength stainless steel pipes at the stainless steel flexible hose both ends.
It further include control system in a further preferred embodiment of the present invention, the control system and the stacked piezoelectric
Driver electrical connection.
The utility model has the advantages that the intelligent bypass type fluid linking damper that stacked piezoelectric driver proposed by the present invention is adjusted comprising
There are bypass line and stacked piezoelectric driver, the adjustment portion of bypass line can be driven to adjust runner pipe by stacked piezoelectric driver
For diameter to realize the adjusting to viscous damping power, this valve driven by stacked piezoelectric driver has positioning accuracy is high (can
Up to nanoscale) and the characteristics of fast response time (up to the microsecond order of magnitude), time-delay can be reduced and improve power output, thus
Meets civil engineering under geological process the needs of shockproof control.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fluid linking damper of the prior art.
Fig. 2 is the structural representation for the intelligent bypass type fluid linking damper that the stacked piezoelectric driver that embodiment proposes is adjusted
Figure.
In Fig. 2,10- master cylinder, 20- pair cylinder, 30- piston, 40- guide rod, 50- bypass line, 51- adjustment portion, 60- lamination pressure
Electric drive.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, being carried out below in conjunction with attached drawing and embodiment to the present invention further
Description.
Referring to Fig. 2, the intelligent bypass type fluid linking damper that a kind of stacked piezoelectric driver that the present embodiment proposes is adjusted,
The guide rod 40 that piston 30, promotion piston 30 including the cylinder barrel with master cylinder 10 and secondary cylinder 20, and in cylinder barrel move, institute
Guide rod 40 is stated to be fixedly connected with the piston 30；Viscose liquids damping material is housed inside the cylinder barrel；Have on the cylinder barrel
Bypass line 50, the two-port of the bypass line 50 is connected to the master cylinder 10, and communicating position is located at the work
Fill in 30 two sides；The bypass line 50 has adjustment portion 51, is equipped with stacked piezoelectric driver 60, the adjusting in adjustment portion 51
Portion 51 adjusts the circulation caliber of the bypass line 50 under the stacked piezoelectric driver 60 driving.
Adjustment portion 51 described in the present embodiment specifically can be one section of hose in the bypass line 50, and caliber is described
The lower corresponding change of the driving of stacked piezoelectric driver 60, to realize the adjusting of the circulation caliber to the bypass line 50.In order to true
Intensity is protected, cylinder barrel described in the present embodiment, piston 30 and guide rod 4 are high-strength stainless steel.Meanwhile the adjustment portion 51 has
Body can be stainless steel flexible hose；The bypass line 50 includes the stainless steel flexible hose, and is connected to the stainless steel
Two sections of high strength stainless steel pipes at hose both ends.
In addition, the present embodiment can also further comprise control system (not shown go out), the control system and the lamination
Piezoelectric actuator 60 is connected by electric wire, and connects stacked piezoelectric driver special DC power supply.By setting in the controls
Set voltage, including be arranged voltage size or voltage it is positive and negative, make stacked piezoelectric driver 60 drive adjustment portion 51 accordingly expand
Or its caliber is reduced, namely adjust the circulation caliber of the bypass line 50, to realize the adjusting to viscous damping power.This reality
It applies in example, when the displacement of stacked piezoelectric driver 60 is 1, the telescoping-radius of adjustment portion 51 is scalable to 3-4 times.
The intelligent bypass type fluid linking damper that the stacked piezoelectric driver that the present embodiment proposes is adjusted is a kind of adjustable multiple
Big semi-automatic control device suitable for the strong randomness of earthquake motion, such as is mounted on Seismic Isolation of Isolation Layer, no matter small shake, middle shake and big
Shake can guarantee isolating affection, and response speed is very fast, it is possible to reduce time-delay, response speed are entirely capable of keeping up with earthquake
It is dynamic, while improving power output.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (2)
1. the intelligent bypass type fluid linking damper that a kind of stacked piezoelectric driver is adjusted, including the cylinder barrel with master cylinder and secondary cylinder,
And the guide rod of the piston, promotion piston motion in cylinder barrel, the guide rod are fixedly connected with the piston；In the cylinder barrel
Portion is equipped with viscose liquids damping material, and the cylinder barrel, piston and guide rod are high-strength stainless steel；It is characterized in that, described
There is bypass line, the two-port of the bypass line is connected to the master cylinder, and communicating position is located at institute on cylinder barrel
State piston two sides；The bypass line has adjustment portion, is equipped with stacked piezoelectric driver in adjustment portion, the adjustment portion is in institute
The lower circulation caliber for adjusting the bypass line of stacked piezoelectric driver driving is stated, the adjustment portion is one in the bypass line
Section hose, caliber accordingly change under stacked piezoelectric driver driving, to realize the runner pipe to the bypass line
The adjusting of diameter, the adjustment portion are specially stainless steel flexible hose；The bypass line includes the stainless steel flexible hose, and is connected respectively
Connect two sections of high strength stainless steel pipes at the stainless steel flexible hose both ends.
2. the intelligent bypass type fluid linking damper that stacked piezoelectric driver according to claim 1 is adjusted, which is characterized in that
It further include control system, the control system is electrically connected with the stacked piezoelectric driver.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610057128.0A CN105525697B (en) | 2016-01-26 | 2016-01-26 | The intelligent bypass type fluid linking damper that stacked piezoelectric driver is adjusted |
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| CN201610057128.0A CN105525697B (en) | 2016-01-26 | 2016-01-26 | The intelligent bypass type fluid linking damper that stacked piezoelectric driver is adjusted |
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| CN105525697A CN105525697A (en) | 2016-04-27 |
| CN105525697B true CN105525697B (en) | 2018-12-07 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY199588A (en) | 2018-04-18 | 2023-11-08 | Univ Putra Malaysia | A multipurpose viscous damper |
| CN108386050A (en) * | 2018-04-27 | 2018-08-10 | 南京林业大学 | A kind of pressure controllable type fluid linking damper |
| CN108443392A (en) * | 2018-04-28 | 2018-08-24 | 南京林业大学 | A kind of displacement correlation variable force variable damping parameter fluid linking damper |
| CN108385854A (en) * | 2018-05-02 | 2018-08-10 | 南京林业大学 | A kind of intelligence pressure adjustable type fluid linking damper |
| CN108425979A (en) * | 2018-05-11 | 2018-08-21 | 南京林业大学 | The fluid linking damper of liquid pressure self-regulation in a kind of cylinder |
| CN108980254A (en) * | 2018-09-25 | 2018-12-11 | 南京林业大学 | A kind of mechanical pressure control fluid linking damper |
| CN109268432B (en) * | 2018-11-16 | 2023-08-18 | 广州大学 | Damper |
| CN113756458B (en) * | 2020-06-05 | 2024-03-19 | 南华大学 | Piezoelectric viscous damper |
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| CN205530762U (en) * | 2016-01-26 | 2016-08-31 | 广州大学 | Intelligent bypass formula viscous damper that stromatolite piezo -actuator adjusted |
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| GB1450765A (en) * | 1972-09-15 | 1976-09-29 | Witt D C | Vehicle suspension systems |
| EP1434953A1 (en) * | 2001-10-11 | 2004-07-07 | Siemens Aktiengesellschaft | Damping device and method for damping movements in a damping device |
| CN101576139B (en) * | 2009-05-13 | 2010-09-15 | 东南大学 | Controllable viscous damper |
| KR101943684B1 (en) * | 2012-02-03 | 2019-01-29 | 히타치 긴조쿠 가부시키가이샤 | Device and recording medium for flow rate control |
| CN105257943B (en) * | 2015-11-09 | 2017-10-24 | 西南交通大学 | A kind of fluid pressure line fluid pulsation attenuating device based on Piezoelectric Shunt Damping System technology |
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| CN205530762U (en) * | 2016-01-26 | 2016-08-31 | 广州大学 | Intelligent bypass formula viscous damper that stromatolite piezo -actuator adjusted |
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