CN1322250C - Controllable damper with viscosity - Google Patents
Controllable damper with viscosity Download PDFInfo
- Publication number
- CN1322250C CN1322250C CNB2004100242844A CN200410024284A CN1322250C CN 1322250 C CN1322250 C CN 1322250C CN B2004100242844 A CNB2004100242844 A CN B2004100242844A CN 200410024284 A CN200410024284 A CN 200410024284A CN 1322250 C CN1322250 C CN 1322250C
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- blade
- viscosity
- piston
- piston rod
- cylinder body
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Abstract
The present invention relates to a controllable damper with viscosity, which can adjust damping force and can utilize a vibration source signal for feedback control. The controllable damper with viscosity comprises a cylinder body with a cylindrical inner cavity, a piston rod and at least two blades, wherein the cylinder body is divided into two enclosed cavities by a piston; the two enclosed cavities are filled with viscous liquid. The controllable damper with viscosity is characterized in that each blade is a flat wafer provided with a spiral groove along the radical direction; both sides of each blade are alternatively superposed on the piston rod to form two sets of blades, wherein one set of blades can not rotate, and the other set of blades can rotate. The damping force of the controllable damper with viscosity can be conveniently adjusted, and the vibration source can be used for the feedback control. The controllable damper with viscosity has the advantages of high sensitivity, simple and convenient manufacture and installation and high durability.
Description
(1) technical field under
The invention belongs to the technical field of damper, 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) summary of the invention
The present invention 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 present invention realizes by following measure:
Controlled visous damping device of the present invention, comprise cylinder body, piston rod, at least two pistons that blade is formed of having cylindrical cavity, cylinder body is divided into two enclosed cavities by piston, be full of viscous liquid in the enclosed cavity, 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 invention, it further improves is that described piston rod is made up of hollow stem and solid hopkinson bar, solid hopkinson bar is positioned at the inner chamber of hollow stem, vertical fluting is arranged on the hollow stem, longitudinal fluting is arranged on the solid hopkinson bar, groove width is greater than recess width; 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 invention 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 invention 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 invention has the beneficial effects as follows 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 present invention is made specific description.
Fig. 1 is a cross-sectional view of the present invention; 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 pistons that blade is formed 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, longitudinal fluting is arranged on the solid hopkinson bar, and groove width is greater than recess width; 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 |
|---|---|---|---|
| CNB2004100242844A CN1322250C (en) | 2004-06-22 | 2004-06-22 | Controllable damper with viscosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100242844A CN1322250C (en) | 2004-06-22 | 2004-06-22 | Controllable damper with viscosity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594912A CN1594912A (en) | 2005-03-16 |
| CN1322250C true CN1322250C (en) | 2007-06-20 |
Family
ID=34663444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100242844A Expired - Fee Related CN1322250C (en) | 2004-06-22 | 2004-06-22 | Controllable damper with viscosity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1322250C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476738B (en) * | 2008-01-03 | 2011-04-06 | 西北农林科技大学 | Fluid damping device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143600B (en) * | 2017-04-26 | 2023-01-03 | 广东工业大学 | Combined damper |
| CN113638305A (en) * | 2021-08-16 | 2021-11-12 | 福建九鼎建设集团有限公司 | Lead extrusion composite rotary vane type viscous damper and application method thereof |
| CN115306244B (en) * | 2022-06-02 | 2023-09-19 | 海益（厦门）建材工业有限公司 | Multi-cavity damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6458827A (en) * | 1987-08-31 | 1989-03-06 | Matsushita Electric Ind Co Ltd | Damper device |
| CN2090901U (en) * | 1991-01-28 | 1991-12-18 | 北京理工大学 | Adjustable anti-vibration damp |
| CN1113298A (en) * | 1994-02-22 | 1995-12-13 | 株式会社优尼希雅杰克斯 | Hydraulic shock absorber having variable damping force characteristic structure |
| CN2363125Y (en) * | 1998-10-16 | 2000-02-09 | 西北工业大学 | Damping adjustable current-changing vibration-damper |
| CN2711461Y (en) * | 2004-06-22 | 2005-07-20 | 济南大学 | Controllable viscosity damper |
-
2004
- 2004-06-22 CN CNB2004100242844A patent/CN1322250C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6458827A (en) * | 1987-08-31 | 1989-03-06 | Matsushita Electric Ind Co Ltd | Damper device |
| CN2090901U (en) * | 1991-01-28 | 1991-12-18 | 北京理工大学 | Adjustable anti-vibration damp |
| CN1113298A (en) * | 1994-02-22 | 1995-12-13 | 株式会社优尼希雅杰克斯 | Hydraulic shock absorber having variable damping force characteristic structure |
| CN2363125Y (en) * | 1998-10-16 | 2000-02-09 | 西北工业大学 | Damping adjustable current-changing vibration-damper |
| CN2711461Y (en) * | 2004-06-22 | 2005-07-20 | 济南大学 | Controllable viscosity damper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476738B (en) * | 2008-01-03 | 2011-04-06 | 西北农林科技大学 | Fluid damping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1594912A (en) | 2005-03-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20070620 Termination date: 20120622 |