CN108869607A - Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle - Google Patents
Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle Download PDFInfo
- Publication number
- CN108869607A CN108869607A CN201810946416.0A CN201810946416A CN108869607A CN 108869607 A CN108869607 A CN 108869607A CN 201810946416 A CN201810946416 A CN 201810946416A CN 108869607 A CN108869607 A CN 108869607A
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- cylinder
- hydro
- pneumatic spring
- spring device
- oil
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- 238000013016 damping Methods 0.000 title claims abstract description 36
- 239000000725 suspension Substances 0.000 title claims abstract description 8
- 238000007667 floating Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- QGZKDVFQNNGYKY-NJFSPNSNSA-N nitrogen-16 Chemical compound [16NH3] QGZKDVFQNNGYKY-NJFSPNSNSA-N 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000366 juvenile effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- 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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/265—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs hydraulic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
-
- 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
- F16F9/3207—Constructional features
Abstract
The invention discloses a kind of hydro-pneumatic spring device, damping means, suspension frame structure and vehicles, wherein hydro-pneumatic spring device includes oil cylinder, main piston, cylinder, floating piston and spiral elongated tubular, the main piston and the oil cylinder form the hydraulic cylinder assembly of the hydro-pneumatic spring device, the cylinder assembly of the floating piston and the air cylinder group olefiant gas spring arrangement；The main piston can move back and forth in the oil cylinder, and the oil cylinder is divided into cylinder upper cavity oil and oil cylinder cavity of resorption, be full of power transmission medium in the cylinder upper cavity oil；The floating piston can move back and forth in the cylinder, and the cylinder is divided into upper chamber of air cylinder and lower chamber of air cylinder, and elastic fluid is full of in the lower chamber of air cylinder, upper intracavitary full of power transmission medium；The spiral elongated tubular is connected to the cylinder upper cavity oil and the upper chamber of air cylinder.Using hydro-pneumatic spring device of the invention, vibration can be more greatly reduced, and compact-sized, be easily installed arrangement.
Description
Technical field
The present invention relates to antivibration area more particularly to a kind of hydro-pneumatic spring device, damping means, suspension frame structure and
Vehicle.
Background technique
Hydro-pneumatic spring is a kind of using high-pressure inert gas as elastic fluid, using oil liquid as the vibration damping of power transmission medium member
Part, it has good nonlinear stiffness characteristic, and collects elasticity and damping element one and may be used also after installing hydraulic system additional
To realize the adjusting of vehicle body attitude.
In order to reduce the volume for occupying wheel cabin, the flexibility of installation is improved, usually by the oil cylinder of hydro-pneumatic spring and cylinder point
Arrangement is opened, and is connected using pipeline.In order to keep pipeline beautiful and clean, easy for installation, generally subtract as far as possible on vehicle
The bending of education and correction for juvenile offenders line.Again since oil liquid is smaller along journey damping loss in long straight tube, it is difficult to it is rapid to provide enough damping forces
Decay Vehicular vibration, usually also needs the damping valve block among the pipeline outside plus, increase overall cost and leakage hidden danger.
Therefore, guarantee pipeline flow area, and on the basis of not increasing length of pipeline, greatly improve the damping that oil liquid flows through pipeline
Loss, generates sufficiently large damping force, removes additional damper valves, is of great immediate significance and engineering value.
Summary of the invention
It has been given below about brief overview of the invention, in order to provide about the basic of certain aspects of the invention
Understand.It should be appreciated that this summary is not an exhaustive overview of the invention.It is not intended to determine pass of the invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form,
Taking this as a prelude to a more detailed description discussed later.
Technical problem to be solved by the invention is to provide a kind of hydro-pneumatic spring devices, are guaranteeing pipeline flow area, and
And not increase length of pipeline on the basis of, greatly improve the damping loss that pipeline flows through, generate sufficiently large damping force, finally go
Except additional damper valves, simplify structure.
One aspect of the present invention provide a kind of hydro-pneumatic spring device, including oil cylinder, main piston, cylinder, floating piston with
And spiral elongated tubular, the main piston and the oil cylinder form the hydraulic cylinder assembly of the hydro-pneumatic spring device, the floating piston
With the cylinder assembly of the air cylinder group olefiant gas spring arrangement；The main piston can move back and forth in the oil cylinder, and
The oil cylinder is divided into cylinder upper cavity oil and oil cylinder cavity of resorption, is full of power transmission medium in the cylinder upper cavity oil；The floating piston energy
It is enough to be moved back and forth in the cylinder, and the cylinder is divided into upper chamber of air cylinder and lower chamber of air cylinder, in the lower chamber of air cylinder
It is upper intracavitary full of power transmission medium full of elastic fluid；The spiral elongated tubular is connected to the cylinder upper cavity oil and the upper chamber of air cylinder.
Another aspect of the present invention provides a kind of damping means, including above-mentioned hydro-pneumatic spring device.
Another aspect of the present invention provides a kind of suspension frame structure of vehicle, including one or more above-mentioned vibration damping portions
Part.
An additional aspect of the present invention provides a kind of vehicle, including above-mentioned suspension frame structure.
The technical solution of above-mentioned aspect according to the present invention provides a kind of oil that damping force is generated using spiral elongated tubular
Gas spring device, the device design the connecting line between the oil cylinder and cylinder of hydro-pneumatic spring device helically, utilize height
Press inert gas as elastic fluid, oil liquid is back and forth flowed as power transmission medium, by oil liquid in spiral elongate conduit high speed
Damping force is provided, its damping property can be substantially improved, and due to not needing additional damper valves, structure can be simplified.
Detailed description of the invention
For the above and other advantages and features that the present invention is further explained, with reference to the accompanying drawing to of the invention specific
Embodiment is described in further detail.The attached drawing together with following detailed description include in the present specification and
Form a part of this specification.The element of function and structure having the same is denoted with the same reference numerals.It should be appreciated that
These attached drawings only describe typical case of the invention, and are not to be taken as the restriction to the scope of the present invention.In the accompanying drawings：
Fig. 1 is the structure of the hydro-pneumatic spring device that damping force is provided using spiral elongated tubular of one embodiment of the present invention
Schematic diagram；
Fig. 2 is showing for the secondary flow phenomenon generated when the oil liquid of one embodiment of the present invention flows in spiral elongated tubular
It is intended to；
Fig. 3 is the schematic diagram of movements of the spiral elongated tubular of one embodiment of the present invention；
Fig. 4 is the mechanical characteristic isoboles when oil liquid of one embodiment of the present invention flows through spiral elongated tubular；
Fig. 5 is that the mechanical characteristic of the hydro-pneumatic spring device using spiral elongated tubular of one embodiment of the present invention is equivalent
Figure；
Fig. 6 is the two degrees of freedom dynamics using the hydro-pneumatic spring device of one embodiment of the present invention as damping means
Model；
Fig. 7 is outstanding vibration acceleration root-mean-square value and the elongated bore of spiral of improving quality of the step excitation lower body of 50mm
Relation curve.
Specific embodiment
Exemplary embodiment of the invention is described hereinafter in connection with attached drawing.It rises for clarity and conciseness
See, does not describe all features of actual implementation mode in the description.It should be understood, however, that developing any this reality
Much decisions specific to embodiment must be made during embodiment, to realize the objectives of developer,
For example, meeting restrictive condition those of related to system and business, and these restrictive conditions may be with embodiment
It is different and change.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to benefit
For those skilled in the art of present disclosure, this development is only routine task.
Here, and also it should be noted is that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings
Illustrate only with closely related device structure and/or processing step according to the solution of the present invention, and be omitted and the present invention
The little other details of relationship.
Fig. 1 is the structure of the hydro-pneumatic spring device that damping force is provided using spiral elongated tubular of one embodiment of the present invention
Schematic diagram.As shown in Figure 1, the hydro-pneumatic spring device of present embodiment includes oil cylinder 11, main piston 10, cylinder 15, floating piston
14 and elongated tubular 13, main piston 10 and oil cylinder 11 constitute the hydraulic cylinder assembly of hydro-pneumatic spring device, floating piston 14 and cylinder
15 constitute the cylinder assembly of hydro-pneumatic spring device, are connected oil cylinder 11 and cylinder 15 by external spiral elongated tubular 13
Come.
Main piston 10 can move back and forth in oil cylinder 11, and the oil cylinder 11 is divided under cylinder upper cavity oil and oil cylinder
Chamber is full of power transmission medium in cylinder upper cavity oil.The power transmission medium is preferably the oil liquid 12 in Fig. 1, is also possible to other power transmissions
Medium is illustrated by taking oil liquid as an example below.
Floating piston 14 can move back and forth in the cylinder 15, and cylinder 15 is divided into upper chamber of air cylinder and cylinder
Cavity of resorption, lower chamber of air cylinder is interior to be full of elastic fluid, and the elastic fluid is preferably the high pressure nitrogen 16 in Fig. 1, is also possible to other
Elastic fluid is illustrated by taking high pressure nitrogen as an example below.
Spiral elongated tubular 13 is connected to the cylinder upper cavity oil and the upper chamber of air cylinder, so that oil liquid 12 can be in the elongated tubular
It is reciprocated through in 13.In the present embodiment, the main function of spiral elongated tubular 13 is to provide damping force, because oil liquid is in spiral
When 13 high speed of elongated tubular flows, in addition to along the mainstream of pipeline axis direction, under the influence of centrifugal force, it can generate secondary
Flow phenomenon.Fig. 2 is showing for the secondary flow phenomenon generated when the oil liquid of one embodiment of the present invention flows in spiral elongated tubular
It is intended to.As shown in Fig. 2, axis of the Secondary Flow perpendicular to spiral elongated tubular 13, flow direction is directed toward on the outside of bend pipe from tube hub, in pipe
Wall is nearby directed toward inside.Wherein, R is the bending radius of helix tube, DhFor helix tube cross-sectional diameter.Due to depositing for Secondary Flow
Deviate maximum flow rate region to outer wall, the damping force of generation is more much bigger than the long straight tube of equal length.
Fig. 3 is that the spiral elongated tubular of one embodiment of the present invention provides the schematic diagram of movements of damping force and inertia force.?
In Fig. 3, piston 4 corresponds to the main piston 10 in above-mentioned Fig. 1, and the left chamber 2 of hydraulic cylinder 6 corresponds to the cylinder upper cavity oil in above-mentioned Fig. 1,
Right chamber 5 corresponds to the upper chamber of air cylinder in above-mentioned Fig. 1.Wherein, α is the cross-sectional diameter of spiral elongated tubular 13, and h is spiral elongated tubular
13 screw pitch, rchFor the internal diameter of spiral elongated tubular 13, rrFor the internal diameter of piston 4, rcFor the internal diameter of oil cylinder 11 and cylinder 15, R is
The bending radius of spiral elongated tubular 13.
As shown in figure 3, the pressure rise of left chamber 2, oil liquid passes through external spiral from left chamber 2 when piston 4 moves downward
Elongated tubular 13 reaches right chamber 5.When piston 4 moves right, the pressure rise of right chamber 5, oil liquid passes through external spiral from right chamber 5
Elongated tubular 13 reaches left chamber 2.During 4 side-to-side movement of piston, oil liquid back and forth at a high speed by spiral elongated tubular 13, tube wall with
The intermolecular friction of oil liquid and the intermolecular interior friction of oil liquid just produce damping force, while the movement of oil liquid acceleration or deceleration generates
Inertia force, so damping force and inertia force can be generated simultaneously.Therefore, the vibration damping that the spiral elongated tubular 13 of present embodiment is constituted
The Equivalent Mechanical characteristic of pipeline is as shown in figure 4, be equivalent to the parallel-connection structure of used container b and damper c, when the arrow institute of such as Fig. 3
Show, when oil liquid high speed flows through spiral elongated tubular 13, provides the damping force and inertia force of coupling.
The Equivalent Mechanical characteristic of the hydro-pneumatic spring device using spiral elongated tubular 13 of present embodiment is as shown in Figure 5.Gas
It is used as elastic fluid filled with high pressure nitrogen 16 in confined space between cylinder 15 and floating piston 14, provides elastic force, oil liquid is past
It is multiple to flow through spiral elongated tubular 13 at a high speed, while generating damping force and inertia force.Therefore, the use spiral elongated tubular of present embodiment
The hydro-pneumatic spring device for providing damping force is equivalent to hydro-pneumatic spring k, used container b and damper c parallel connection and constitutes.
Fig. 6 is the two degrees of freedom kinetic model using the hydro-pneumatic spring device of present embodiment as damping means, is hanged
Improve quality m2Absolute coordinate be z2, the quality that hangs m1Absolute coordinate be z1, spring ktAs level-one vibration damping, present embodiment
Hydro-pneumatic spring device can simplify as second level vibration damping as the parallel-connection structure of hydro-pneumatic spring k, used container b and damper c, q is outer
Motivate displacement signal in boundary.
Assuming that the initial inflated gas pressure in cylinder 15 is Pg0, initial gas volume is V0, floating piston 14 and main piston 10
Cross-sectional area be all Ac, air polytropic exponent r, then elastic force FkFor：
Assuming that the screw pitch of spiral elongated tubular 13 is h, bending radius R, internal diameter rch, the elongated pipeloop number of spiral is n, oil cylinder
11 and the internal diameter of cylinder 15 be rc, the density of oil liquid is ρ, dynamic viscosity μ, then damping force FcFor：
Wherein：
Inertia force FbFor：
WhereinTwo order derivatives of Z are sought in expression, and wherein：
The range of the above structure size of spiral elongated tubular 13, oil cylinder 11 and cylinder 15 can by those skilled in the art according to
Use environment determines.
For equal with the cross-sectional area of main piston 10 by floating piston 14 above, oil cylinder 11 is equal with the internal diameter of cylinder 15
It is illustrated, but the internal diameter of the cross-sectional area of floating piston 14 and main piston 10, oil cylinder 11 and cylinder 15 can also be unequal.
Fig. 7 is for kinetic model shown in fig. 6, when dynamic excitation displacement signal q is the step excitation of 50mm, spiral shell
Revolve the internal diameter r of elongated tubular 13chWith the outstanding m that improves quality2Vibration acceleration root-mean-square value between relation curve, wherein solid line indicate
Using present embodiment spiral shape elongated tubular 13 when the case where, the case where when dotted line is indicated using equal length straight tube.Thus
It can be seen that：When using spirality pipeline, the minimum value of the root-mean-square value of outstanding vibration acceleration of improving quality is by 1.236m/s2It reduces
To 1.025m/s2, therefore, under identical length of pipe, can more greatly be reduced using the spiral elongated tubular of present embodiment
Vibration.On the other hand, present embodiment is compact-sized, is easily installed arrangement.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (8)
1. a kind of hydro-pneumatic spring device, which is characterized in that including oil cylinder (11), main piston (10), cylinder (15), floating piston
(14) and spiral elongated tubular (13), the main piston (10) and the oil cylinder (11) form the oil cylinder of the hydro-pneumatic spring device
Assembly, the cylinder assembly of the floating piston (14) and the cylinder (15) composition hydro-pneumatic spring device；
The main piston (10) can move back and forth in the oil cylinder (11), and the oil cylinder (11) is divided on oil cylinder
Chamber and oil cylinder cavity of resorption, the cylinder upper cavity oil is interior to be full of power transmission medium；
The floating piston (14) can move back and forth in the cylinder (15), and the cylinder (15) is divided into cylinder
Epicoele and lower chamber of air cylinder, the lower chamber of air cylinder is interior full of elastic fluid, upper intracavitary full of power transmission medium；
The spiral elongated tubular (13) is connected to the cylinder upper cavity oil and the upper chamber of air cylinder.
2. hydro-pneumatic spring device according to claim 1, which is characterized in that at least one of the spiral elongated tubular (13)
It is divided into spirality pipeline.
3. hydro-pneumatic spring device according to claim 1 or 2, which is characterized in that the power transmission medium is oil liquid, the bullet
Property medium be high-pressure inert gas.
4. hydro-pneumatic spring device according to claim 3, which is characterized in that the inert gas is nitrogen.
5. hydro-pneumatic spring device described at least one of -4 according to claim 1, which is characterized in that the floating piston (14)
It is equal with the cross-sectional area of the main piston (10).
6. a kind of damping means, which is characterized in that including hydro-pneumatic spring device described at least one of claim 1-5.
7. a kind of suspension frame structure of vehicle, including one or more damping means as claimed in claim 6.
8. a kind of vehicle, including suspension frame structure as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810946416.0A CN108869607A (en) | 2018-08-17 | 2018-08-17 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810946416.0A CN108869607A (en) | 2018-08-17 | 2018-08-17 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869607A true CN108869607A (en) | 2018-11-23 |
Family
ID=64321099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810946416.0A Pending CN108869607A (en) | 2018-08-17 | 2018-08-17 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110294099A (en) * | 2019-05-20 | 2019-10-01 | 南京航空航天大学 | Mix the folding wings auxiliary drive device of spring based on solid-liquid |
| CN110307128A (en) * | 2019-05-20 | 2019-10-08 | 南京航空航天大学 | A kind of solid-liquid mixes spring energy storage device |
| CN110329031A (en) * | 2019-06-06 | 2019-10-15 | 中国北方车辆研究所 | A kind of rocker arm suspension that achievable big angle rotary is adjusted |
| CN111017062A (en) * | 2019-11-07 | 2020-04-17 | 鲁洁 | Flexible limb |
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| US20130037362A1 (en) * | 2010-02-05 | 2013-02-14 | Bill J. Gartner | Damping and inertial hydraulic device |
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| CN209026088U (en) * | 2018-08-17 | 2019-06-25 | 中国北方车辆研究所 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
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| CN110329031A (en) * | 2019-06-06 | 2019-10-15 | 中国北方车辆研究所 | A kind of rocker arm suspension that achievable big angle rotary is adjusted |
| CN111017062A (en) * | 2019-11-07 | 2020-04-17 | 鲁洁 | Flexible limb |
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