CN107975563B - 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
- CN107975563B CN107975563B CN201711200919.5A CN201711200919A CN107975563B CN 107975563 B CN107975563 B CN 107975563B CN 201711200919 A CN201711200919 A CN 201711200919A CN 107975563 B CN107975563 B CN 107975563B
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- Prior art keywords
- piston
- fluid
- reflection
- compression spring
- spiral compression
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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 dampers based on fluid momentum principle of reflection, belong to liquid condenser vibration isolation field.It includes damping cylinder ontology, 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 damping 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 the road n radial direction straight channel and the road (n+1) axial direction straight channel, n for greater than even number；The length of axial straight channel is at least 5 times or more of radial straight channel.The present invention is a kind of viscous damper for reflecting realization damping force with stable equilibrium position, by fluid momentum and adjusting.
Description
Technical field
The invention belongs to liquid condenser vibration isolation fields, refer in particular to a kind of viscous damping based on fluid momentum principle of reflection
Device.
Background technique
Liquid condenser is a kind of intelligent vibration damping instrument, and existing Liquid Variable-resistance Buddhist nun device is usually full of viscous fluid
Piston is installed in working cylinder, the change of damping force is realized by the working clearance for changing fluid flowing.The liquid of the prior art hinders
Although Buddhist nun's device realizes variable damping, but there are still certain defects, i.e., piston is difficult to accurately return to initially after external force disappears
Equilbrium position.Therefore, Liquid Variable-resistance Buddhist nun's device that initial rest position can accurately be returned to by designing one kind has important value.
Summary of the invention
Present invention technical problem to be solved is: for technical problem of the existing technology, the present invention provides a kind of tool
There is stable equilibrium position, reflect the viscous damper for realizing that damping force is adjusted by fluid momentum.
To solve the above-mentioned problems, solution proposed by the present invention are as follows: a kind of viscous based on fluid momentum principle of reflection
Property damper, it includes damping cylinder ontology, the end cap A and end cap B that are installed in damping cylinder ontology both ends, symmetrical piston modules
A and symmetrical piston modules B, the spiral compression spring A being installed on the end cap A are installed in the damping 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 damping cylinder ontology, and can
Inner wall along the damping cylinder ontology is free to slide.
The symmetrical piston modules A includes piston A and piston rod A, and one end of the piston rod A is installed in the piston A
On, the other end passes through the outside that the end cap A extends to the damping cylinder ontology, and fluid can be made by offering on the piston A
The fluid that momentum reflection occurs reflects throttle orifice A；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 piston rod B, and one end of the piston rod B is installed in the piston B
On, the other end passes through the outside that the end cap B extends to the damping cylinder ontology, and fluid can be made by offering on the piston B
The fluid that momentum reflection occurs reflects throttle orifice B；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 the spiral compression spring B are 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 about the damping cylinder ontology
Center cross section it is symmetrical；The fluid reflection throttle orifice is simply connected cross-section circular through hole, by the road n radial direction straight channel and (n
+ 1) road axial direction straight channel form, n be greater than even number；The length of the axial direction straight channel is at least the 5 of the radial straight channel
Times or more；The adjacent radial straight channel is corresponding with axial straight channel to be connected；The fluid reflection throttle orifice A and fluid reflection
Throttle orifice B only one entrance and one outlet.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(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 reflects throttle orifice B, so that the momentum of fluid and piston repeated reflection, to realize 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 steadily returned to, and effectively inhibits piston static preceding of reciprocating vibration.
Detailed description of the invention
Fig. 1 is a kind of structure principle chart of viscous damper based on fluid momentum principle of reflection of the 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 shells
Revolve compressed spring A；8-spiral compression spring B；9-fluids reflect throttle orifice A；10-fluids reflection throttling B；11-damping cylinders
Ontology；12-viscous fluids.
Specific embodiment
Below with reference to the drawings and specific embodiments, invention is further described in detail.
A kind of viscous damper based on fluid momentum principle of reflection shown in Figure 1, of the invention, including damping cylinder sheet
Body 11, the end cap A3 and end cap B4 that are installed in 11 both ends of damping cylinder ontology, 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 damping cylinder ontology 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 damping cylinder ontology 11, and can be along damping
The inner wall of cylinder ontology 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 damping cylinder ontology 11 is extended to across end cap A3, and 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 damping cylinder ontology 11 is extended to across end cap B4, and 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 are zero stress, symmetrical piston modules A lives with symmetrical
Plug module B is in initial rest position.
It is identical with fluid reflection throttle orifice B10 structure that fluid reflects throttle orifice A9, but about damping cylinder ontology 11
It is symmetrical to hit exactly cross section；It is simply connected cross-section circular through hole that fluid, which reflects throttle orifice, by the road n radial direction straight channel and the road (n+1)
Axial straight channel composition, n are the even number greater than 2；The length of axial straight channel is at least 5 times or more of radial straight channel；It is adjacent
Radial straight channel it is corresponding with axial straight channel connected；Fluid reflects throttle orifice A9 and fluid reflection throttle orifice B10 only has one
A entrance and one outlet.
Working 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, thus
So that piston A5 relative to piston B6 close to when, piston A5 and piston B6 be not by the effect of spring force, to effectively inhibit work
Fill in static preceding reciprocating motion；Piston A5 and the movement of piston B6 synchronous backward, viscous fluid 12 are flowed through fluid reflection throttle orifice,
Since fluid reflection throttle orifice is that the road n radial direction straight channel and the road (n+1) axial direction straight channel form, and the length of axial straight channel is extremely
Few 5 times or more for radial straight channel, so that the momentum that the flowing of viscous fluid 12 generates constantly impacts and reflects two-piston,
To realize the adjusting of piston damping power；Certain deformation is occurred by compression for two spiral compression springs, stores elastic potential energy,
After external disturbing force or exciting force disappear, which will reflect throttle orifice by fluid and freely discharge, and only 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 damping cylinder ontology (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 ontology (11) both ends, are installed in the end
The spiral compression spring A (7) on A (3) is covered, the internal viscous fluid (12) of the damping cylinder ontology (11), and dress are installed in
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 damping cylinder ontology (11), and can
Inner wall along the damping cylinder ontology (11) is free to slide；
The symmetrical piston modules A includes piston A (5) and piston rod A (1), and one end of the piston rod A (1) is installed in described
On piston A (5), the other end passes through the outside that the end cap A (3) extends to the damping cylinder ontology (11), the piston A (5)
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), and one end of the piston rod B (2) is installed in described
On piston B (6), the other end passes through the outside that the end cap B (4) extends to the damping cylinder ontology (11), the piston B (6)
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) are zero stress, the symmetrical piston mould
Block A and symmetrical piston modules B are in initial rest position；
Fluid reflection throttle orifice A (9) is identical with fluid reflection throttle orifice B (10) structure, but about the damping cylinder
The center cross section of ontology (11) is symmetrical；The fluid reflection throttle orifice is simply connected cross-section circular through hole, radially straight by the road n
Channel and the road (n+1) axial direction straight channel form, and n is the even number greater than 2；The length of the axial direction straight channel is at least the radial direction
5 times or more of straight channel；The adjacent radial straight channel is corresponding with axial straight channel to be connected；The fluid reflects throttle orifice A
(9) and fluid reflects throttle orifice B (10) only one 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN107975563A CN107975563A (en) | 2018-05-01 |
| CN107975563B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110295557B (en) * | 2019-07-15 | 2020-09-25 | 中南大学 | Self-adaptive deformation reset anti-collision method capable of resisting uneven impact force |
Family Cites Families (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 |
| US9186951B2 (en) * | 2013-12-13 | 2015-11-17 | GM Global Technology Operations LLC | 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 |
| 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 |
| 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 |
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