CN107975563A - A kind of viscous damper based on fluid momentum principle of reflection - Google Patents
A kind of viscous damper based on fluid momentum principle of reflection Download PDFInfo
- Publication number
- CN107975563A CN107975563A CN201711200919.5A CN201711200919A CN107975563A CN 107975563 A CN107975563 A CN 107975563A CN 201711200919 A CN201711200919 A CN 201711200919A CN 107975563 A CN107975563 A CN 107975563A
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- China
- Prior art keywords
- piston
- fluid
- reflection
- compression spring
- spiral compression
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of viscous damper based on fluid momentum principle of reflection, belongs to liquid condenser vibration isolation field.It includes damped cylinder body, end cap A and end cap B, symmetrical piston modules A and symmetrical piston modules B, and the spiral compression spring A being installed on end cap A, is installed in the viscous fluid of damped cylinder body interior, and the spiral compression spring B being installed on end cap B；It is simply connected cross-section circular through hole that fluid reflection throttle orifice is offered in symmetrical piston modules A, B, is made of n roads radial direction straight channel and (n+1) road axial direction straight channel, n for more than even number；The length of axial straight channel is at least more than 5 times of radial direction straight channel.The present invention is a kind of viscous damper that damping force is realized with stable equilibrium position, by fluid momentum reflection and is adjusted.
Description
Technical field
The invention belongs to liquid condenser vibration isolation field, refers in particular to a kind of viscous damping based on fluid momentum principle of reflection
Device.
Background technology
Liquid condenser is a kind of intelligent vibration damping instrument, and existing Liquid Variable-resistance Buddhist nun device is usually full of viscous fluid
Installation piston in working cylinder, the change of damping force is realized by the working clearance for changing fluid flowing.The liquid resistance of the prior art
Although Buddhist nun's device realizes variable damping, but there are still it is certain the defects of, i.e., external force disappear after piston be difficult to accurately return to it is initial
Equilbrium position.Therefore, designing a kind of Liquid Variable-resistance Buddhist nun's utensil that can accurately return to initial rest position has important value.
The content of the invention
The technical problem that the present invention need to solve is：For technical problem existing in the prior art, the present invention provides a kind of tool
There is stable equilibrium position, the viscous damper that damping force is adjusted is realized by fluid momentum reflection.
To solve the above-mentioned problems, solution proposed by the present invention is：It is a kind of viscous based on fluid momentum principle of reflection
Property damper, it include damped cylinder body, the end cap A and end cap B that are installed in the damped cylinder body both ends, symmetrical piston modules
A and symmetrical piston modules B, the spiral compression spring A being installed on the end cap A, is installed in the damped cylinder body interior
Viscous fluid, and the spiral compression spring B being installed on the end cap B.
The symmetrical piston modules A and symmetrical piston modules B antisymmetry are installed in the inside of the damped cylinder body, and can
It is free to slide along the inner wall of the damped cylinder body.
The symmetrical piston modules A includes piston A and one end of piston rod A, the piston rod A are installed in the piston A
On, the other end extends to the outside of the damped cylinder body through the end cap A, and fluid can be made by being offered on the piston A
The fluid reflection throttle orifice A of momentum reflection occurs；The other end of the spiral compression spring A is free, and the piston rod A passes through institute
State spiral compression spring A.
The symmetrical piston modules B includes piston B and one end of piston rod B, the piston rod B are installed in the piston B
On, the other end extends to the outside of the damped cylinder body through the end cap B, and fluid can be made by being offered on the piston B
The fluid reflection throttle orifice B of momentum reflection occurs；The other end of the spiral compression spring B8 is free, and the piston rod B is passed through
The spiral compression spring B.
When the spiral compression spring A and spiral compression spring B is zero stress, the symmetrical piston modules
A and symmetrical piston modules B are in initial rest position.
The fluid reflection throttle orifice A is identical with fluid reflection throttle orifice B structure, but on the damped cylinder body
Center cross section it is symmetrical；The fluid reflection throttle orifice is simply connected cross-section circular through hole, by n roads radial direction straight channel and (n
+ 1) road axial direction straight channel form, n be more than even number；The length of the axial direction straight channel is at least the 5 of the radial direction straight channel
More than times；The adjacent radial direction straight channel is corresponding with axial straight channel to be connected；The fluid reflection throttle orifice A and fluid reflection
Throttle orifice B only has an entrance and one outlet.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
(1) a kind of viscous damper based on fluid momentum principle of reflection of the invention be equipped with fluid reflection throttle orifice A with
Fluid reflection throttle orifice B so that the momentum of fluid repeated reflection with piston, so as to fulfill the adjusting of damping force.
(2) a kind of viscous damper based on fluid momentum principle of reflection of the invention be additionally provided with spiral compression spring A and
Spiral compression spring B, and spiral compression spring is free close to one end of piston so that piston under extraneous incentive action still
Initial rest position so can be stably returned to, and effectively inhibits piston static preceding of reciprocating vibration.
Brief description of the drawings
Fig. 1 is a kind of structure principle chart of viscous damper based on fluid momentum principle of reflection of the present invention.
In figure, 1-piston rod A；2-piston rod B；3-end cap A；4-end cap B；5-piston A；6-piston B；7-spiral shell
Spinning contracting spring A；8-spiral compression spring B；9-fluid reflection throttle orifice A；10-fluid reflection throttling B；11-damped cylinder
Body；12-viscous fluid.
Embodiment
The present invention is described in further detail below with reference to the drawings and specific embodiments.
A kind of viscous damper based on fluid momentum principle of reflection shown in Figure 1, of the invention, including damped cylinder sheet
Body 11, the end cap A3 and end cap B4 that are installed in 11 both ends of damped cylinder body, symmetrical piston modules A and symmetrical piston modules B, installing
In the spiral compression spring A7 on end cap A3, the viscous fluid 12 being installed in inside damped cylinder body 11, and it is installed in end cap
Spiral compression spring B8 on B4.
Symmetrical piston modules A and symmetrical piston modules B antisymmetry are installed in the inside of damped cylinder body 11, and can be along damping
The inner wall of cylinder body 11 is free to slide.
Symmetrical piston modules A includes piston A5 and piston rod A1, and one end of piston rod A1 is installed on piston A5, the other end
The outside of damped cylinder body 11 is extended to through end cap A3, the fluid that can make fluid that momentum reflection occur is offered on piston A5
Reflect throttle orifice A9；The other end of spiral compression spring A7 is free, and piston rod A1 passes through spiral compression spring A7.
Symmetrical piston modules B includes piston B6 and piston rod B2, and one end of piston rod B2 is installed on piston B6, the other end
The outside of damped cylinder body 11 is extended to through end cap B4, the fluid that can make fluid that momentum reflection occur is offered on piston B6
Reflect throttle orifice B10；The other end of spiral compression spring B8 is free, and piston rod B2 passes through spiral compression spring B8.
When spiral compression spring A7 and spiral compression spring B8 is zero stress, symmetrical piston modules A lives with symmetrical
Plug module B is in initial rest position.
Fluid reflection throttle orifice A9 is identical with fluid reflection throttle orifice B10 structures, but on damped cylinder body 11
It is symmetrical to hit exactly cross section；Fluid reflection throttle orifice is simply connected cross-section circular through hole, by n roads radial direction straight channel and (n+1) road
Axial straight channel composition, n are the even number more than 2；The length of axial straight channel is at least more than 5 times of radial direction straight channel；It is adjacent
Radial direction straight channel it is correspondings with axial straight channel connected；Fluid reflects throttle orifice A9 and fluid reflection throttle orifice B10 only has one
A entrance and one outlet.
Operation principle：When piston A5 and piston B6 is in initial position, spiral compression spring A7 and spiral compression spring B8
In zero stress, therefore initial position is equilbrium position；Spiral compression spring is free schema close to one end of piston, so that
So that piston A5 relative to piston B6 close to when, piston A5 and piston B6 from spring force effect, so as to effectively inhibit work
Fill in static preceding reciprocating motion；Piston A5 and the movement of piston B6 synchronous backwards, viscous fluid 12 are flowed through fluid reflection throttle orifice,
Since fluid reflection throttle orifice is n roads radial direction straight channel and (n+1) road axial direction straight channel composition, and the length of axial straight channel is extremely
It is more than 5 times of radial direction straight channel less, so that the momentum that the flowing of viscous fluid 12 produces constantly impacts and reflection two-piston,
So as to fulfill the adjusting of piston damping power；Two spiral compression springs are subject to compression that certain deformation occurs, and store elastic potential energy,
After external disturbing force or exciting force disappear, which will reflect throttle orifice by fluid and freely discharge, and simply two-piston returns
To initial rest position, so that it is guaranteed that two piston rods have stable equilbrium position.
Claims (1)
1. a kind of viscous damper based on fluid momentum principle of reflection, including damped cylinder body (11), it is installed in the damping
End cap A (3) and end cap B (4), the symmetrical piston modules A and symmetrical piston modules B at cylinder body (11) both ends, are installed in the end
The spiral compression spring A (7) on A (3) is covered, is installed in the internal viscous fluid (12) of the damped cylinder body (11), and dress
Spiral compression spring B (8) on the end cap B (4), it is characterised in that：
The symmetrical piston modules A and symmetrical piston modules B antisymmetry are installed in the inside of the damped cylinder body (11), and can
It is free to slide along the inner wall of the damped cylinder body (11)；
The symmetrical piston modules A includes piston A (5) and piston rod A (1), described in one end of the piston rod A (1) is installed in
On piston A (5), the other end extends to the outside of the damped cylinder body (11), the piston A (5) through the end cap A (3)
On offer can make fluid occur momentum reflection fluid reflection throttle orifice A (9)；The spiral compression spring A (7) it is another
Freely, the piston rod A (1) passes through the spiral compression spring A (7) at end；
The symmetrical piston modules B includes piston B (6) and piston rod B (2), described in one end of the piston rod B (2) is installed in
On piston B (6), the other end extends to the outside of the damped cylinder body (11), the piston B (6) through the end cap B (4)
On offer can make fluid occur momentum reflection fluid reflection throttle orifice B (10)；The spiral compression spring B (8) it is another
One end is free, and the piston rod B (2) passes through the spiral compression spring B (8)；
When the spiral compression spring A (7) and the spiral compression spring B (8) they are zero stress, the symmetrical piston mould
Block A and symmetrical piston modules B are in initial rest position；
The fluid reflection throttle orifice A (9) is identical with fluid reflection throttle orifice B (10) structure, but on the damped cylinder
The center cross section of body (11) is symmetrical；The fluid reflection throttle orifice is simply connected cross-section circular through hole, radially straight by n roads
Passage is formed with (n+1) road axial direction straight channel, and n is the even number more than 2；The length of the axial direction straight channel is at least the radial direction
More than 5 times of straight channel；The adjacent radial direction straight channel is corresponding with axial straight channel to be connected；The fluid reflection throttle orifice A
(9) and fluid reflection throttle orifice B (10) only has an entrance and one outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200919.5A CN107975563B (en) | 2017-11-27 | 2017-11-27 | A kind of viscous damper based on fluid momentum principle of reflection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200919.5A CN107975563B (en) | 2017-11-27 | 2017-11-27 | A kind of viscous damper based on fluid momentum principle of reflection |
Publications (2)
| Publication Number | Publication Date |
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| CN107975563A true CN107975563A (en) | 2018-05-01 |
| CN107975563B CN107975563B (en) | 2019-07-26 |
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| CN201711200919.5A Active CN107975563B (en) | 2017-11-27 | 2017-11-27 | A kind of viscous damper based on fluid momentum principle of reflection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268428A (en) * | 2018-11-02 | 2019-01-25 | 常州大学 | A kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity |
| CN109611500A (en) * | 2019-01-25 | 2019-04-12 | 江苏容大减震科技股份有限公司 | A kind of compact type bilayer viscous damper with reset function |
| CN110295557A (en) * | 2019-07-15 | 2019-10-01 | 中南大学 | A kind of avoiding collision that adaptive deformation that resisting uneven impact force resets |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807860A (en) * | 1984-06-28 | 1989-02-28 | Simons Stephen W | Motorcycle front fork anti-cavity damping system |
| CN202158129U (en) * | 2011-07-22 | 2012-03-07 | 天津市泓锋泰汽车改装有限公司 | Novel double-rod hydraulic type vehicle damper |
| CN204113992U (en) * | 2014-09-11 | 2015-01-21 | 重庆小康工业集团股份有限公司 | Automobile mazy type vibration damper |
| CN104481047A (en) * | 2014-12-08 | 2015-04-01 | 湖南科技大学 | External adjustable viscous damper with function of speed and displacement locking |
| CN104712702A (en) * | 2013-12-13 | 2015-06-17 | 通用汽车环球科技运作有限责任公司 | Height adjustable damping device |
| CN105156567A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multi-stage diffraction passive dual-control variable-damping magneto-rheological damper |
| CN105179572A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Double-rod multistage-diffraction magneto-rheological damper |
-
2017
- 2017-11-27 CN CN201711200919.5A patent/CN107975563B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807860A (en) * | 1984-06-28 | 1989-02-28 | Simons Stephen W | Motorcycle front fork anti-cavity damping system |
| CN202158129U (en) * | 2011-07-22 | 2012-03-07 | 天津市泓锋泰汽车改装有限公司 | Novel double-rod hydraulic type vehicle damper |
| CN104712702A (en) * | 2013-12-13 | 2015-06-17 | 通用汽车环球科技运作有限责任公司 | Height adjustable damping device |
| CN204113992U (en) * | 2014-09-11 | 2015-01-21 | 重庆小康工业集团股份有限公司 | Automobile mazy type vibration damper |
| CN104481047A (en) * | 2014-12-08 | 2015-04-01 | 湖南科技大学 | External adjustable viscous damper with function of speed and displacement locking |
| CN105179572A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Double-rod multistage-diffraction magneto-rheological damper |
| CN105156567A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multi-stage diffraction passive dual-control variable-damping magneto-rheological damper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268428A (en) * | 2018-11-02 | 2019-01-25 | 常州大学 | A kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity |
| CN109268428B (en) * | 2018-11-02 | 2020-05-26 | 常州大学 | Fluid vibration isolator based on nonlinear rigidity symmetric vibration isolation |
| CN109611500A (en) * | 2019-01-25 | 2019-04-12 | 江苏容大减震科技股份有限公司 | A kind of compact type bilayer viscous damper with reset function |
| CN110295557A (en) * | 2019-07-15 | 2019-10-01 | 中南大学 | A kind of avoiding collision that adaptive deformation that resisting uneven impact force resets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107975563B (en) | 2019-07-26 |
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