CN109268428A - A kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity - Google Patents
A kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity Download PDFInfo
- Publication number
- CN109268428A CN109268428A CN201811299950.3A CN201811299950A CN109268428A CN 109268428 A CN109268428 A CN 109268428A CN 201811299950 A CN201811299950 A CN 201811299950A CN 109268428 A CN109268428 A CN 109268428A
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- Prior art keywords
- piston
- hollow cylinder
- fluid
- end cap
- resistance
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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
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
- F16F9/303—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of fluid dampers based on the symmetrical vibration isolation of non-linear rigidity, belong to fluid damper field.It includes vibration isolator shell and end cap, is installed in the hollow cylinder A and hollow cylinder B, flat motion bar of vibration isolator interior of shell, the piston A and piston B being installed on flat motion bar, flexible pipe, resistance to compression helical spring A and resistance to compression helical spring B；Flat motion bar one end passes through the linear bearing being installed on end cap and the outside for extending to end cap；Piston A and piston B is slidably installed in the inside of hollow cylinder A, hollow cylinder B respectively；One end of resistance to compression helical spring A is fixed at the positive middle part of inside bottom surface of vibration isolator shell, and the other end is free；One end of resistance to compression helical spring B is fixed at the positive middle part in inside of end cap, and the other end is free.Original state, is full of the viscous fluid of shear thickening feature inside fluid chamber A, without fluid inside fluid chamber B.The present invention is a kind of based on nanoparticle solvent absorption energy, the fluid damper with symmetrical vibration isolation.
Description
Technical field
The invention mainly relates to fluid damper fields, refer in particular to a kind of fluid vibration isolation based on the symmetrical vibration isolation of non-linear rigidity
Device.
Background technique
Fluid damper is a kind of device for slowing down mechanical oscillation using damping characteristic and consuming kinetic energy.The prior art
Fluid damper generallys use the viscosity of current control fluid or changes the working clearance of fluid to realize damping force
Change.Due to the asymmetry of piston motion, existing fluid damper cannot achieve symmetrical big damping force vibration isolation, therefore set
Counting a kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity has highly important application 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 base
Energy, the fluid damper with symmetrical vibration isolation are absorbed in nanoparticle solvent, by shear thickening.
To solve the above-mentioned problems, solution proposed by the present invention are as follows: a kind of based on the symmetrical vibration isolation of non-linear rigidity
Fluid damper, it includes vibration isolator shell and end cap, is installed in the hollow cylinder A and open circles of the vibration isolator interior of shell
Cylinder B, flat motion bar, the piston A and piston B being installed on the flat motion bar, flexible pipe, resistance to compression helical spring A and resistance to compression spiral bullet
Spring B.
Described flat motion bar one end passes through the linear bearing being installed on the end cap and the outside for extending to the end cap；Institute
Stating vibration isolator shell is U-shaped container, and the hollow cylinder A is fixed at the bottom of the vibration isolator shell；The open circles
Cylinder B is fixed at the inside of the end cap.
The piston A and piston B is slidably installed in the inside of the hollow cylinder A, hollow cylinder B respectively；It is described
One end of resistance to compression helical spring A is fixed at the positive middle part of inside bottom surface of the vibration isolator shell, and the other end is free；It is described anti-
One end of pressure helical spring B is fixed at the positive middle part in inside of the end cap, and the other end is free.
The enclosure space of the vibration isolator shell and the hollow cylinder A, the piston A composition is fluid chamber A；The end
The enclosure space of lid and the hollow cylinder B, the piston B composition is fluid chamber B；Original state is filled inside the fluid chamber A
Full viscous fluid, without fluid inside the fluid chamber B；The viscous fluid is a kind of nanoparticle in solid-liquid admixture
Solvent has shear thickening feature.
The flexible pipe is the nonmetallic round tube that plastic deformation can occur, and one end is connected with the fluid chamber A, another
End is connected with the fluid chamber B；When the flat motion bar moves, the piston A is always positioned inside the hollow cylinder A, institute
Piston B is stated to be always positioned inside the hollow cylinder B.
Compared with the prior art, the invention has the following advantages and beneficial effects:
There are two piston and two are hollow for a kind of fluid damper tool based on the symmetrical vibration isolation of non-linear rigidity of the invention
Cylinder, to realize the feature that fluid slowly flows in flexible pipe, at the same time, fluid is due to shear thickening spy
Sign, so as to improve variable damping power；Two pistons synchronization only one with damping force.It follows that of the invention
Be it is a kind of based on nanoparticle solvent, by shear thickening absorb energy, the fluid damper with symmetrical vibration isolation.
Detailed description of the invention
Fig. 1 is a kind of principle schematic diagram of fluid damper based on the symmetrical vibration isolation of non-linear rigidity of the invention.
In figure, 1-vibration isolator shell；2-end caps；21-linear bearings；3-flat motion bars；31-piston A；32-pistons
B；41-hollow cylinder A；42-hollow cylinder B；5-flexible pipes；6-resistance to compression helical spring A；7- resistance to compression helical spring B；81-
Fluid chamber A；82- fluid chamber B.
Specific embodiment
Below with reference to the drawings and specific embodiments, invention is further described in detail.
A kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity shown in Figure 1, of the invention, it includes vibration isolation
Device shell 1 and end cap 2, the hollow cylinder A41 and hollow cylinder B42 being installed in inside vibration isolator shell 1, flat motion bar 3 are installed in
Piston A31 and piston B32 on flat motion bar 3, flexible pipe 5, resistance to compression helical spring A6 and resistance to compression helical spring B7.
Shown in Figure 1,3 one end of flat motion bar passes through the linear bearing 21 being installed on end cap 2 and extends to the outer of end cap 2
Portion；Vibration isolator shell 1 is U-shaped container, and hollow cylinder A41 is fixed at the bottom of vibration isolator shell 1；Hollow cylinder B42 is solid
Surely it is installed in the inside of end cap 2.
It is shown in Figure 1, piston A31 and piston B32 be slidably installed in respectively hollow cylinder A41, hollow cylinder B42 it is interior
Portion；One end of resistance to compression helical spring A6 is fixed at the positive middle part of inside bottom surface of vibration isolator shell 1, and the other end is free；Resistance to compression
One end of helical spring B7 is fixed at the positive middle part in inside of end cap 2, and the other end is free.
Shown in Figure 1, the enclosure space of vibration isolator shell 1 and hollow cylinder A41, piston A31 composition is fluid chamber
A81；The enclosure space of end cap 2 and hollow cylinder B42, piston B32 composition is fluid chamber B82；Original state, in fluid chamber A81
Portion is full of viscous fluid, without fluid inside fluid chamber B81；The viscous fluid is a kind of nanoparticle in solid-liquid admixture
Sub- solvent has shear thickening feature.
Shown in Figure 1, flexible pipe 5 is the nonmetallic round tube that plastic deformation can occur, and one end is connected with fluid chamber A81
Logical, the other end is connected with fluid chamber B82；When flat motion bar 3 moves, piston A31 is always positioned inside hollow cylinder A41, piston
B32 is always positioned inside hollow cylinder B42.
Working principle: when flat motion bar 3 moves downward, viscous fluid inside piston A31 compression fluid room A81, piston
B32 does not stress, and the viscous fluid inside fluid chamber A81 is flowed slowly into fluid chamber B32 by flexible pipe 5 at this time；Due to viscous
Property fluid have shear thickening feature, although resistance to compression helical spring A6 occur compressive deformation, spring force is compared with damping force
It can ignore；When flat motion bar 3 moves right, viscous fluid inside piston B32 compression fluid room B82, piston A31 not by
Power, the viscous fluid inside fluid chamber B32 is flowed slowly into fluid chamber A31 by flexible pipe 5 at this time；Since viscous fluid has
There is the feature of shear thickening, although compressive deformation occurs for resistance to compression helical spring B7, spring force can be ignored compared with damping force；
When flat motion bar 3, which deviates initial rest position, to be stopped, due to one of them of resistance to compression helical spring A6 or resistance to compression helical spring B7
Compressive deformation has occurred, store it is elastic can, therefore flat motion bar 3 can slowly be restored under the action of elastic energy herein it is initial flat
Weighing apparatus position.
Claims (1)
1. a kind of fluid damper based on the symmetrical vibration isolation of non-linear rigidity, it is characterised in that: it include vibration isolator shell (1) and
End cap (2), the hollow cylinder A (41) and hollow cylinder B (42) being installed in inside the vibration isolator shell (1), flat motion bar (3),
The piston A (31) and piston B (32) being installed on the flat motion bar (3), flexible pipe (5), resistance to compression helical spring A (6) and resistance to compression
Helical spring B (7)；
Described flat motion bar (3) one end passes through the linear bearing (21) being installed on the end cap (2) and extends to the end cap (2)
Outside；The vibration isolator shell (1) is U-shaped container, and the hollow cylinder A (41) is fixed at the vibration isolator shell
(1) bottom；The hollow cylinder B (42) is fixed at the inside of the end cap (2)；
The piston A (31) and the piston B (32) are slidably installed in the hollow cylinder A (41), hollow cylinder B (42) respectively
Inside；One end of the resistance to compression helical spring A (6) is fixed at the positive middle part of inside bottom surface of the vibration isolator shell (1),
The other end is free；One end of the resistance to compression helical spring B (7) is fixed at the positive middle part in inside of the end cap (2), the other end
Freely；
The enclosure space that the vibration isolator shell (1) and the hollow cylinder A (41), the piston A (31) are formed is fluid chamber A
(81)；The enclosure space that the end cap (2) and the hollow cylinder B (42), the piston B (32) are formed is fluid chamber B (82)；
Original state, the fluid chamber A (81) is internal to be full of viscous fluid, and the fluid chamber B (81) is internal without fluid；The viscous flow
Body is a kind of nanoparticle solvent in solid-liquid admixture, has shear thickening feature；
The flexible pipe (5) is the nonmetallic round tube that plastic deformation can occur, and one end is connected with the fluid chamber A (81),
The other end is connected with the fluid chamber B (82)；When the flat motion bar (3) moves, the piston A (31) is always positioned at the sky
Heart cylinder A (41) is internal, and it is internal that the piston B (32) is always positioned at the hollow cylinder B (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811299950.3A CN109268428B (en) | 2018-11-02 | 2018-11-02 | Fluid vibration isolator based on nonlinear rigidity symmetric vibration isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811299950.3A CN109268428B (en) | 2018-11-02 | 2018-11-02 | Fluid vibration isolator based on nonlinear rigidity symmetric vibration isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109268428A true CN109268428A (en) | 2019-01-25 |
| CN109268428B CN109268428B (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811299950.3A Active CN109268428B (en) | 2018-11-02 | 2018-11-02 | Fluid vibration isolator based on nonlinear rigidity symmetric vibration isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268428B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360914A (en) * | 2020-10-22 | 2021-02-12 | 同济大学 | Fluid-solid coupling inertial container |
| CN113266662A (en) * | 2021-06-23 | 2021-08-17 | 常州大学 | Rigidity mutation type vibration isolator with rigidity increasing along with displacement increase |
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083185A (en) * | 1992-08-28 | 1994-03-02 | 林荣敏 | Closed hydraulic cylinder with damped stretching action |
| US20020011387A1 (en) * | 2000-07-19 | 2002-01-31 | Yu-Hsueh Chu | Shock-absorbing device |
| EP1584502A1 (en) * | 2004-04-08 | 2005-10-12 | HEMSCHEIDT FAHRWERKTECHNIK GmbH & Co. KG | Suspension and damping device for motor vehicles |
| CN101251163A (en) * | 2008-03-27 | 2008-08-27 | 中国科学技术大学 | Opposition resistance damper for shear thickening liquid |
| CN107975563A (en) * | 2017-11-27 | 2018-05-01 | 常州大学 | A kind of viscous damper based on fluid momentum principle of reflection |
-
2018
- 2018-11-02 CN CN201811299950.3A patent/CN109268428B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083185A (en) * | 1992-08-28 | 1994-03-02 | 林荣敏 | Closed hydraulic cylinder with damped stretching action |
| US20020011387A1 (en) * | 2000-07-19 | 2002-01-31 | Yu-Hsueh Chu | Shock-absorbing device |
| EP1584502A1 (en) * | 2004-04-08 | 2005-10-12 | HEMSCHEIDT FAHRWERKTECHNIK GmbH & Co. KG | Suspension and damping device for motor vehicles |
| CN101251163A (en) * | 2008-03-27 | 2008-08-27 | 中国科学技术大学 | Opposition resistance damper for shear thickening liquid |
| CN107975563A (en) * | 2017-11-27 | 2018-05-01 | 常州大学 | A kind of viscous damper based on fluid momentum principle of reflection |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360914A (en) * | 2020-10-22 | 2021-02-12 | 同济大学 | Fluid-solid coupling inertial container |
| CN113266662A (en) * | 2021-06-23 | 2021-08-17 | 常州大学 | Rigidity mutation type vibration isolator with rigidity increasing along with displacement increase |
| CN113266662B (en) * | 2021-06-23 | 2022-02-22 | 常州大学 | Rigidity mutation type vibration isolator with rigidity increasing along with displacement increase |
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
| CN113323985B (en) * | 2021-06-29 | 2022-04-19 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
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| Publication number | Publication date |
|---|---|
| CN109268428B (en) | 2020-05-26 |
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