CN2711461Y - Controllable viscosity damper - Google Patents
Controllable viscosity damper Download PDFInfo
- Publication number
- CN2711461Y CN2711461Y CN 200420051653 CN200420051653U CN2711461Y CN 2711461 Y CN2711461 Y CN 2711461Y CN 200420051653 CN200420051653 CN 200420051653 CN 200420051653 U CN200420051653 U CN 200420051653U CN 2711461 Y CN2711461 Y CN 2711461Y
- Authority
- CN
- China
- Prior art keywords
- blade
- blades
- utility
- model
- piston rod
- 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 - Lifetime
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a controllable viscosity damper which can adjust the damping force and can make a feedback control utilizing the vibration source signals, comprising a cylinder block with a cylindrical cavity, a piston rod, and at least two blades. The cylinder block is divided into two enclosed cavities which are full of viscous liquids. The utility model is characterized in that the blades are flat type wafers with spiral grooves in the radial direction; the blades are superposed on the piston rod with the faces and the bottoms alternating to form two blade groups, one group of blades isn't rotatable and the other group of blades is rotatable. The damping force of the utility model can be adjusted conveniently and the vibration source can be utilized to make a feedback control. Besides, the utility model has the advantages of high sensitivity, simple manufacture and installation, and long service life.
Description
(1) technical field under
The utility model belongs to the technical field of damper, and particularly a kind of damping force can adjust, can utilize signal of vibrating to make the controlled visous damping device of feedback control.
(2) background technique
No matter be machinery or in building or offshore platform structure, excessive vibration or can make the functions of the equipments forfeiture, or can make structural damage.Therefore, vibration control is most important in machinery and structural design.Especially true in machinery and the dynamic design of structure and reliability design.Vibration control mainly applies control mechanism (system) to structure, by control mechanism and structure acting in conjunction, reduces the mutual transmission of vibrational energy, avoids coupling amplification of vibrating and the generation of resonating, and effectively prevents machinery and structural damage.Machinery and structural vibration control can be divided into Passive Control, ACTIVE CONTROL, half ACTIVE CONTROL and mix four types of controls.
In above-mentioned four kinds of control techniques, the effect of ACTIVE CONTROL is best, but owing to need add the bigger energy, the control algorithm more complicated of control gear, so its level of application in addition is less than other three kinds of control techniques; Passive Control is cheap, and effectiveness in vibration suppression is good, realizes easily, and is with fastest developing speed at present, most widely used; Half ACTIVE CONTROL is between ACTIVE CONTROL and Passive Control, and its control accuracy is higher, and cost is cheap than ACTIVE CONTROL, and does not need bigger power source, therefore has wide application and development prospect; Mix control and combine the advantage of certain several controlling method, so it has and control effect preferably, development prospect is comparatively wide.Passive, half initiatively and in the mixing vibration control technique, choosing of power consumption vibration control method is most important.Passive energy dissipation control is that some member designs in machinery or the structure is become the power consumption parts or installs damper at some position of structure, and the energy when consumer device or structural vibration reaches the purpose that reduces to vibrate.The energy-dissipating device and the damper kind of research and development are more at present, conclude to get up to mainly contain: metal damper, frcition damper, viscous damper, viscoelastic damper and composite damper.
Viscous damper generally is made up of cylinder body, piston and fluid, piston can be reciprocating in cylinder barrel, an amount of aperture is arranged on the piston, fill with fluid in the tube, when producing relative movement between piston and cylindrical shell, pass through in the aperture of fluid from the piston, the relative movement between piston and cylindrical shell is produced damping, thereby the dissipation kinergety reduces the structural vibrations reaction.The volume of the number in hole and tube inner fluid can be determined according to the required damping force that provides of damper on the viscous damper piston.Fluid can be silicone oil or other viscous fluid.Viscous damper can provide bigger damping, reduce structural vibrations effectively, moment of flexure out-phase in the damping force of damper generation simultaneously and the displacement response of structure and the post, so this damper can not produce the axle power with post bending moment homophase in post when reducing structure relative storey displacement and shearing.Viscous damper excited target frequency influence is less.But existing viscous damper has following shortcoming: the one, and the processing and fabricating of viscous damper is difficult, and seepage easily takes place in viscous fluids; The 2nd, the small aperture on the piston can not be adjusted, and after the viscosity temperature influence of damper inner fluid descended, the damper energy dissipation capacity also descended thereupon.The 3rd, if there is not the assistance of external energy can not utilize signal of vibrating to realize feedback control.
(3) model utility content
The utility model provides a kind of damping force can adjust, can utilize signal of vibrating to make the controlled visous damping device of feedback control in order to overcome the deficiency of above technology.
The utility model is realized by following measure:
Controlled visous damping device of the present utility model, comprise cylinder body, piston rod, at least two blades of having cylindrical cavity, cylinder body is divided into two enclosed cavities by piston, is full of viscous liquid in the enclosed cavity, and its specialization is: described blade is for radially having the flat disk of spiral fluted; The blade positive and negative alternate is superimposed upon on the piston rod, forms two groups of vane group, and one group of blade is rotatable blade not, and another group blade is a rotatable vane.
Controlled visous damping device of the present utility model, it further improves and is, and described piston rod is made up of hollow stem and solid hopkinson bar, and solid hopkinson bar is positioned at the inner chamber of hollow stem, and vertical fluting is arranged on the hollow stem, and longitudinal fluting is arranged on the solid hopkinson bar; Rotatable vane is inserted in the groove of solid hopkinson bar, and rotatable vane is not fixed on the hollow stem.
Working principle of the present utility model is: the piston integral body that two vane group superpositions being made up of not rotatable vane and rotatable vane form can be along the axial direction to-and-fro motion in cylinder body.Be full of viscous liquid in two enclosed cavities that piston and cylinder body are formed.Owing on each piston blade radially spiral chute is arranged all, every group of piston blade that overlaps all can form a gallery.Two groups of blade interlaced arrangement just can form the long and narrow aperture of a plurality of polygonals between two vane group, connect two enclosed cavities of piston/cylinder, and fluid can flow in this passage.During damper work, piston rod is connected with vibrating machine or equipment, and vibrational energy passes to piston by piston rod, makes it produce motion.The motion of piston causes in the enclosed cavity of piston cylinder both sides pressure difference, forces fluid motion, because the existence of viscous friction power, fluid flows through long and narrow polygonal aperture can produce damping, thus the dissipates vibration energy.
Because one group of blade of the present utility model can rotate, can be according to different vibration sources, different service conditions, different environmental conditionss, the relative position of two vane group of adjustment makes the hydraulic radius difference that forms passage, thereby produces different damping forces.The rotation of blade can utilize the vibration source amplitude to control, and promptly utilizes the signal of vibrating feedback control.
The beneficial effects of the utility model are that damping force can conveniently be adjusted; Can utilize vibration source to do feedback control, and have sensitivity higher, make and install simple and convenient, long-lived advantage.
(4) description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is made specific description.
Fig. 1 is a cross-sectional view of the present utility model
Fig. 2 cuts open figure for the right side of Fig. 1
Fig. 3 is the structural representation of blade 5
Fig. 4 is the structural representation of blade 6
Among the figure, 1 cylinder body, 2 piston rods, 3 nuts, 4 cover plates, 5,6 blades, 201 hollow stems, 202 solid hopkinson bars, 203 grooves, 204 flutings
(5) embodiment
Fig. 1-Fig. 4 is the concrete structure figure of present embodiment.Controlled viscous damper is made up of cylinder body 1, piston rod 2, nut 3, cover plate 4, piston blade 5,6.Blade 5, blade 6 are in groups, multi-disc stack uses, and the nut 3 at two ends, the left and right sides is fixed on piston rod 2 with cover plate 4.Wherein, one group of vane group and the cylinder body formed of blade 6 do not relatively rotate.One group of vane group and cylinder body that blade 5 is formed can produce relative rotation it by institutional adjustment.The piston integral body of two vane group compositions can be along the axial direction to-and-fro motion in cylinder body.Be full of viscous liquid in two enclosed cavities that piston and cylinder body are formed.
Above-mentioned piston rod 2 is made up of hollow stem 201 and solid hopkinson bar 202.Wherein, two relative vertical flutings 204 are arranged on the hollow stem 201, two relative longitudinal flutings 203 are arranged on the solid hopkinson bar 202, the width of fluting 204 is greater than the width of groove 203.Rotatable vane 5 just injects in the groove 203 of solid hopkinson bar 202 by the fluting on the hollow stem 201 204.Rotatable vane 6 does not directly contact with hollow stem 201, and is fixed on the hollow stem 201.Rotate solid hopkinson bar 202, make itself and hollow stem 201 produce suitable torsional displacement, rotate relative to blade 6, reach change by the superpose purpose in the aperture formed of blade 5,6 thereby drive blade 5.
Claims (2)
1. controlled visous damping device, comprise cylinder body, piston rod, at least two blades of having cylindrical cavity, cylinder body is divided into two enclosed cavities by piston, is full of viscous liquid in the enclosed cavity, it is characterized in that: described blade is for radially having the flat disk of spiral fluted; The blade positive and negative alternate is superimposed upon on the piston rod, forms two groups of vane group, and one group of blade is rotatable blade not, and another group blade is a rotatable vane.
2. controlled visous damping device according to claim 1, it is characterized in that: described piston rod is made up of hollow stem and solid hopkinson bar, and solid hopkinson bar is positioned at the inner chamber of hollow stem, and vertical fluting is arranged on the hollow stem, and longitudinal fluting is arranged on the solid hopkinson bar; Rotatable vane is inserted in the groove of solid hopkinson bar, and rotatable vane is not fixed on the hollow stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051653 CN2711461Y (en) | 2004-06-22 | 2004-06-22 | Controllable viscosity damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051653 CN2711461Y (en) | 2004-06-22 | 2004-06-22 | Controllable viscosity damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711461Y true CN2711461Y (en) | 2005-07-20 |
Family
ID=36192565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420051653 Expired - Lifetime CN2711461Y (en) | 2004-06-22 | 2004-06-22 | Controllable viscosity damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711461Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322250C (en) * | 2004-06-22 | 2007-06-20 | 济南大学 | Controllable damper with viscosity |
| CN102912881A (en) * | 2012-11-06 | 2013-02-06 | 沈阳建筑大学 | Adjustable fluid viscous damper |
| CN102912879A (en) * | 2012-11-06 | 2013-02-06 | 沈阳建筑大学 | Sealing plate and sealing hole viscous damper |
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN110307283A (en) * | 2019-06-05 | 2019-10-08 | 长江大学工程技术学院 | Damper |
| CN112942610A (en) * | 2021-01-29 | 2021-06-11 | 同济大学 | Composite damper based on chiral structure |
-
2004
- 2004-06-22 CN CN 200420051653 patent/CN2711461Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322250C (en) * | 2004-06-22 | 2007-06-20 | 济南大学 | Controllable damper with viscosity |
| CN102912881A (en) * | 2012-11-06 | 2013-02-06 | 沈阳建筑大学 | Adjustable fluid viscous damper |
| CN102912879A (en) * | 2012-11-06 | 2013-02-06 | 沈阳建筑大学 | Sealing plate and sealing hole viscous damper |
| CN102912881B (en) * | 2012-11-06 | 2015-01-14 | 沈阳建筑大学 | Adjustable fluid viscous damper |
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN110307283A (en) * | 2019-06-05 | 2019-10-08 | 长江大学工程技术学院 | Damper |
| CN110307283B (en) * | 2019-06-05 | 2020-02-07 | 长江大学工程技术学院 | Damper |
| CN112942610A (en) * | 2021-01-29 | 2021-06-11 | 同济大学 | Composite damper based on chiral structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101225853B (en) | Dynamical pressure gas elasticity foil bearing with stability self-adaptive control function | |
| EP3196505B1 (en) | Outer cup rotary axial eddy current damper | |
| CN2711461Y (en) | Controllable viscosity damper | |
| CN101074573A (en) | Damper of multi-dimensional superelastic shape memory alloy | |
| CN109826480B (en) | One-way damping hinge device and method for carrying out structure passive vibration control by applying same | |
| CN102434415A (en) | Low-noise axial plunger pump based on indexing angle of pumps in series | |
| CN102080679B (en) | Novel high-frequency electro-hydraulic flutter generator | |
| CN101391648B (en) | Amplitude-adjustable platform with single freedom degree | |
| CN104285011A (en) | A variable moment resonance-free vibro hammer | |
| CN1322250C (en) | Controllable damper with viscosity | |
| CN111156283A (en) | Crank piston type inertial volume damping dynamic vibration isolator | |
| CN201489118U (en) | Cylinder type vibroseis vibrator | |
| CN106014887A (en) | Suspension self-excitation runner piezoelectric beam energy harvester | |
| CN106130400A (en) | A kind of scroll actuation circular piezoelectric vibrator energy accumulator | |
| Zhu et al. | Design and analysis of a novel double-servo direct drive rotary valve with high frequency | |
| CN103498793A (en) | Variable gear pump | |
| CN201660980U (en) | Suspended frequency modulation mass damper | |
| CN106411176A (en) | Rotary wheel self-exciting circle piezoelectric vibrator generator | |
| CN205681340U (en) | A kind of scroll actuation circular piezoelectric vibrator energy accumulator | |
| CN205744317U (en) | A kind of suspension self-excitation runner piezoelectric beam energy accumulator | |
| Van Rooij et al. | Experimental performance evaluation and validation of dynamical contact models of the Ocean Grazer | |
| CN205754065U (en) | A kind of runner auto-excitation type circular piezoelectric vibrator electromotor | |
| CN114593890A (en) | Wave generating device with rocking plate | |
| CN108540010B (en) | A kind of pipe robot and its motivational techniques based on piezoelectric vibrator | |
| CN106452175A (en) | Circular piezoelectric vibrator generator for wind power gear box monitoring system power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |