CN103088934B - The external adjustable type viscous damper of a kind of pressure limiting - Google Patents
The external adjustable type viscous damper of a kind of pressure limiting Download PDFInfo
- Publication number
- CN103088934B CN103088934B CN201310042577.4A CN201310042577A CN103088934B CN 103088934 B CN103088934 B CN 103088934B CN 201310042577 A CN201310042577 A CN 201310042577A CN 103088934 B CN103088934 B CN 103088934B
- Authority
- CN
- China
- Prior art keywords
- piston rod
- adjusting
- adjusting nut
- adjustable type
- throttle seat
- 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 - Fee Related
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses the external adjustable type viscous damper of a kind of pressure limiting, this damper forms damper exocoel by piston, piston rod, outer end cap, outer shell etc., the internal flow channel of the throttle orifice on piston rod wall aperture, piston rod cavity, throttle seat, center spool hole decomposition pressure oil, spool, throttle seat, tapered plug, spring, adjusting nut and adjusting rod composition adjusting device.The flowing of fluid is utilized to promote the fluid passage that spool forms alternately change; Adopt and be left-handedly connected with right-handed nut, key the purpose of design reaching external adjusting nut position; Utilize spring and tapered plug to form limiting mechanism of pressure, adopt rotation adjusting lever to change its length and reach adjustment institute limits pressure size object.
Description
Technical field
The invention belongs to damper technique field, particularly relate to the external adjustable type viscous damper of a kind of pressure limiting.
Background technology
The large scale structure such as highrise building and Loads of Long-span Bridges can occur significantly to vibrate under earthquake or wind action, and significantly vibrating of structure will cause destruction or the total collapse of its partial component.In order to reduce earthquake or wind to the impact of structure, oil damper is widely used in building structure and bridge construction carries out passive energy dissipation.The structure of oil damper generally adopts shearing valve type.
The effect of damper vibration damping is put to death in its energy dissipation capacity W, and in a vibration period T of structure: W=2Fx, wherein F is damping force, and x is the stroke of structural vibration one-period internal damping device piston rod.
The vibration isolation under earthquake, wind effect for cable-stayed bridge cable vibration isolation or other structure, at present main employing oil damper or MR damper vibration damping.When damping force F is too little, damper power consumption is little, and effectiveness in vibration suppression is poor; When damping force F is too large, causing structure partial to be out of shape x can be very little, and the power consumption of damper is little equally, poor equally to the effectiveness in vibration suppression of structure.Therefore, the effectiveness in vibration suppression that suitable damping force could have structure is only had.But in engineering structure, even the suspension cable of same seat bridge, due to the difference of guy cable length, Suo Li, sectional dimension etc., the damping force of its best effectiveness in vibration suppression is all different.
Existing oil damper, product is once complete, and its damping force curve just immobilizes, can not according to the size of the needs of structural vibration reduction damping adjusting power more expediently, causes the effect that it does not reach in the vibration damping of pulling cable damping or other structure.
For this shortcoming of oil damper, the damping force of MR damper changes the size of damping force by the adjustment of externally-applied magnetic field or voltage, and therefore, MR damper is widely applied in the vibration damping of pulling cable damping or other structure.But MR damper utilizes magnetic flow liquid to be made, magnetic flow liquid by certain technique, iron powder is suspended in oil to obtain, and the obvious separate and subside of long-time standing (six months to about 1 year) meeting, its settlement issues cannot solve always.MR damper left standstill after a period of time will sedimentation caking, loses its passive energy dissipation effect to structure.MR damper cost is high, and magnetic flow liquid is expensive.And performance relatively preferably magnetic flow liquid manufacturing technology is grasped by Lord company of the U.S., so far externally technical know-how.
Summary of the invention
For current Problems existing, the invention provides the external adjustable type viscous damper of a kind of pressure limiting.
The embodiment of the present invention is achieved in that the external adjustable type viscous damper of a kind of pressure limiting, and piston and the piston rod of the external adjustable type viscous damper of this pressure limiting adopt tight fit connection; Install left throttle seat at piston rod cavity left end, left throttle seat and piston rod inwall are with being threaded; Adjusting rod inserts in piston rod through left throttle seat centromere discharge orifice, and left tapered plug, spring and left adjusting nut are enclosed within successively adjusting rod from piston rod left end, left adjusting nut and piston rod adopt left hand thread to be connected, and adopt key to be connected with adjusting rod; Right tapered plug, spring and right adjusting nut are enclosed within successively adjusting rod from piston rod right-hand member, right adjusting nut and piston rod adopt right-handed thread to be connected, and adopt key to be connected with adjusting rod; From right-hand member rotation adjusting lever, make left adjusting nut, right adjusting nut is connected with piston rod; First be pressed into left guide holder, sealing ring at outer tube left end, then left end cap to be effectively threaded with outer; In left end piston rod, add pressure oil again, be pressed into right guide holder, sealing ring, to be more effectively threaded with outer with right end cap; Be pressed into right inside guide holder, sealing ring, then with right inside end cap with piston rod with being threaded.
Further, the pressure oil of the external adjustable type viscous damper of this pressure limiting is by the internal flow channel of piston rod wall aperture, piston rod cavity, centromere discharge orifice on throttle seat, center spool hole composition.
Further, arrange outer shell outside the end cap of the external adjustable type viscous damper of this pressure limiting, outer cylinder interior and piston interface place arrange guide ring; Left throttle seat and right throttle seat intermediate arrangement spool.
This damper adopts the size of external adjusting device damping adjusting power, and pressure oil is as power consumption medium.Even this damper is to the product of same specification, the size of damping adjusting power easily also can be needed according to structural vibration reduction; Simultaneously using pressure oil as power consumption medium, settlement issues can not occur, and cost is low, stable performance, according to actual needs, other fluid can also be used instead as power consumption medium, meet various actual needs better.This invention can be enhanced competitiveness greatly, and increase the output value, this product also can be used for the occasion that other needs flexible modulation damping force.
Accompanying drawing explanation
Fig. 1 is the structural representation of the external adjustable type viscous damper of pressure limiting that the embodiment of the present invention provides;
Fig. 2 is the A-A sectional view of the external adjustable type viscous damper of pressure limiting that the embodiment of the present invention provides;
Fig. 3 is the B-B sectional view of the external adjustable type viscous damper of pressure limiting that the embodiment of the present invention provides;
Fig. 4 is the C-C sectional view of the external adjustable type viscous damper of pressure limiting that the embodiment of the present invention provides.
In figure: 1, left end cap; 2, sealing ring; 3, left guide holder; 4, pressure oil; 5, piston; 6, guide ring; 7, outer shell; 8, right guide holder; 9, right end cap; 10, left inside end cap; 11, adjusting rod; 12, left inside guide holder; 13, left adjusting nut; 14, spring; 15, left tapered plug; 16, left throttle seat; 17, center throttling is empty; 18, micro orifice; 19, spool; 20, right throttle seat; 21, right tapered plug; 22, right adjusting nut; 23, right inside guide holder; 24, right inside end cap; 25, piston rod.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiments provide the external adjustable type viscous damper of a kind of pressure limiting, piston 5 and piston rod 25 are adopted tight fit connection; Install left throttle seat 16 at piston rod 25 inner chamber left end, left throttle seat 16 and piston rod 25 inwall are with being threaded; Adjusting rod 11 is inserted in piston rod 25 through left throttle seat 16 centromere discharge orifice 17, from piston rod 25 left end, left tapered plug 15, spring 14 and left adjusting nut 13 are enclosed within adjusting rod 11 successively, left adjusting nut 13 and piston rod 25 adopt left hand thread (reverse thread) to be connected, and adopt key to be connected with adjusting rod 11; Be enclosed within adjusting rod 11 from piston rod 25 right-hand member successively by right tapered plug 21, spring 14 and right adjusting nut 22, right adjusting nut 22 and piston rod 25 adopt right-handed thread (forward screw thread) to be connected, and adopt key to be connected with adjusting rod 11; From right-hand member rotation adjusting lever 11, make left adjusting nut 13, right adjusting nut 22 is reliably connected with piston rod 25; First be pressed into left guide holder 3, sealing ring 2 at outer tube left end, then left end cap 1 to be effectively threaded with outer; In left end piston rod 25, add pressure oil 4 again, be pressed into right guide holder 8, sealing ring 2, to be more effectively threaded with outer with right end cap 9; Be pressed into right inside guide holder 23, sealing ring, then with right inside end cap 24 with piston rod 25 with being threaded; Arrange outer shell 7 outside end cap, outer shell 7 is inner arranges guide ring 6 with piston 5 contact surface place; 16, left throttle seat 16 and right throttle seat 20 intermediate arrangement spool 19.
When the piston rod 25 with piston 5 moves to right, the right chamber volume between outer shell 7 and piston rod 25 reduces, and pressure oil 4 is compressed, and pressure raises, and left chamber volume increases simultaneously, and pressure reduces.Therefore, pressure oil 4 is by internal flow channel chamber flowing left from right chamber of the centromere discharge orifice 17 on piston rod 25 wall aperture, piston rod 25 inner chamber, throttle seat, center spool hole composition.Pressure oil 4 is in flow process, and due to differential pressure action, spool 19 moves to left, and blocks micro orifice on left throttle seat 16.Only have when pressure reduction is greater than left side spring 14 active force, pressure oil 4 is washed left tapered plug 15 open and is flowed to left chamber.By rotation adjusting lever 11, the front and back position of adjustable left adjusting nut 13 and right adjusting nut 22 carrys out the precompression of regulating spring 14, thus reaches the effect of damping adjusting power.In like manner, when piston rod 25 moves to left, the flow direction of pressure oil 4 is reverse, and the method for damping adjusting power moves to right consistent with principle with piston rod 25.
The external adjustable type viscous damper of pressure limiting provided by the invention, when the piston rod 25 with piston 5 moves to right, the right chamber volume between outer shell 7 and piston rod 25 reduces, and pressure oil 4 is compressed, and pressure raises, and left chamber volume increases simultaneously, and pressure reduces.Therefore, pressure oil 4 is by internal flow channel chamber flowing left from right chamber of the centromere discharge orifice 17 on piston rod 25 wall aperture, piston rod 25 inner chamber, throttle seat, center spool hole composition.Pressure oil 4 is in flow process, and due to differential pressure action, spool 19 moves to left, and blocks micro orifice on left throttle seat 16.Only have when pressure reduction is greater than left side spring 14 active force, pressure oil 4 is washed left tapered plug 15 open and is flowed to left chamber.By rotation adjusting lever 11, the front and back position of adjustable left adjusting nut 13 and right adjusting nut 22 carrys out the precompression of regulating spring 14, thus reaches the effect of damping adjusting power.In like manner, when piston rod 25 moves to left, the flow direction of pressure oil 4 is reverse, and the method for damping adjusting power moves to right consistent with principle with piston rod 25.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the external adjustable type viscous damper of pressure limiting, is characterized in that, piston and the piston rod of the external adjustable type viscous damper of this pressure limiting adopt tight fit connection; Install left throttle seat at piston rod cavity left end, left throttle seat and piston rod inwall are with being threaded; Adjusting rod inserts in piston rod through left throttle seat centromere discharge orifice, and left tapered plug, spring and left adjusting nut are enclosed within successively adjusting rod from piston rod left end, left adjusting nut and piston rod adopt left hand thread to be connected, and adopt key to be connected with adjusting rod; Right tapered plug, spring and right adjusting nut are enclosed within successively adjusting rod from piston rod right-hand member, right adjusting nut and piston rod adopt right-handed thread to be connected, and adopt key to be connected with adjusting rod; From right-hand member rotation adjusting lever, make left adjusting nut, right adjusting nut is connected with piston rod; First be pressed into left guide holder, sealing ring at outer tube left end, then left end cap to be effectively threaded with outer; In left end piston rod, add pressure oil again, be pressed into right guide holder, sealing ring, to be more effectively threaded with outer with right end cap;
The pressure oil of the external adjustable type viscous damper of this pressure limiting is by the internal flow channel of the centromere discharge orifice on piston rod wall aperture, piston rod cavity, throttle seat, center spool hole composition;
Arrange outer shell outside the end cap of the external adjustable type viscous damper of this pressure limiting, outer cylinder interior and piston interface place arrange guide ring; Left throttle seat and right throttle seat intermediate arrangement spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042577.4A CN103088934B (en) | 2013-01-28 | 2013-01-28 | The external adjustable type viscous damper of a kind of pressure limiting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042577.4A CN103088934B (en) | 2013-01-28 | 2013-01-28 | The external adjustable type viscous damper of a kind of pressure limiting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103088934A CN103088934A (en) | 2013-05-08 |
| CN103088934B true CN103088934B (en) | 2015-07-29 |
Family
ID=48202023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310042577.4A Expired - Fee Related CN103088934B (en) | 2013-01-28 | 2013-01-28 | The external adjustable type viscous damper of a kind of pressure limiting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103088934B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481047B (en) * | 2014-12-08 | 2016-06-08 | 湖南科技大学 | The speed displacement external adjustable type viscous damper of two lock |
| CN114378382A (en) * | 2022-01-28 | 2022-04-22 | 湖南科技大学 | Electric pulse auxiliary processing device for processing slender shaft parts and processing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608760Y (en) * | 2003-04-11 | 2004-03-31 | 郑汉林 | Hydraulic damper |
| CN2861612Y (en) * | 2005-12-22 | 2007-01-24 | 淄博佳能石化机械有限公司 | Hydraulic damper |
| CN203066283U (en) * | 2013-01-28 | 2013-07-17 | 湖南科技大学 | Pressure-limiting external regulating type viscous damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050040574A1 (en) * | 2003-08-19 | 2005-02-24 | Ivers Douglas E. | Pneumatic surface effect damper |
-
2013
- 2013-01-28 CN CN201310042577.4A patent/CN103088934B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608760Y (en) * | 2003-04-11 | 2004-03-31 | 郑汉林 | Hydraulic damper |
| CN2861612Y (en) * | 2005-12-22 | 2007-01-24 | 淄博佳能石化机械有限公司 | Hydraulic damper |
| CN203066283U (en) * | 2013-01-28 | 2013-07-17 | 湖南科技大学 | Pressure-limiting external regulating type viscous damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103088934A (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103671677A (en) | Viscous damper | |
| CN103032504B (en) | Inverted double-out-rod stay cable oil damper based on thin-wall small hole throttling | |
| CN104481047B (en) | The speed displacement external adjustable type viscous damper of two lock | |
| CN105114513B (en) | Speed and displacement dual-lock pressure-limiting type viscous damper | |
| CN104989764B (en) | Hole type viscous damper with hole length capable of being automatically adjusted | |
| CN103088934B (en) | The external adjustable type viscous damper of a kind of pressure limiting | |
| CN103615494A (en) | Damper used for vibration reduction of pipeline | |
| US9534652B2 (en) | Shock absorber | |
| CN108397504A (en) | External adjustable variable damping viscous damping devices | |
| CN204437164U (en) | The MR damper that working clearance is variable | |
| CN203066283U (en) | Pressure-limiting external regulating type viscous damper | |
| CN204921827U (en) | Speed displacement twin -lock voltage limiting formula viscous damper | |
| CN203926580U (en) | A kind of string assisting vehicle structure that possesses antivibration function | |
| CN203656013U (en) | Viscous damper | |
| CN208546372U (en) | A kind of efficient screw-in cartridge valve being easily installed | |
| CN104452576B (en) | Speed displacement two lock adjustable type viscous damper | |
| CN104196802B (en) | Variable displacement control valve | |
| CN102619294A (en) | Damping coefficient automatically-adjusted damper | |
| CN202690042U (en) | Pressure balance bunker device of hydraulic pushing instrument | |
| CN204282198U (en) | Speed displacement twin-lock adjustable type viscous damper | |
| CN206190791U (en) | Rod -type solid particle friction damper | |
| CN104153476A (en) | Piston type damper filled with saturated sand | |
| CN210564366U (en) | Aperiodic coupling hydraulic induced vibration type coiled tubing resistance reducing device | |
| CN103244598B (en) | Viscous fluid damper based on porous throttling | |
| CN203656014U (en) | Viscous damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20220128 |