CN104421374B - Amplitude sense resistive hydro-pneumatic spring - Google Patents
Amplitude sense resistive hydro-pneumatic spring Download PDFInfo
- Publication number
- CN104421374B CN104421374B CN201310384682.6A CN201310384682A CN104421374B CN 104421374 B CN104421374 B CN 104421374B CN 201310384682 A CN201310384682 A CN 201310384682A CN 104421374 B CN104421374 B CN 104421374B
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- Prior art keywords
- amplitude
- hydro
- end cap
- pneumatic spring
- resistance device
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/22—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger
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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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The present invention relates to a kind of to sense the amplitude of suspension when vehicle travels, effectively regulate the amplitude sense resistive hydro-pneumatic spring of vibration damping.This hydro-pneumatic spring includes upper end union joint, piston, working cylinder, high-pressure sealing ring, piston rod, joint ball head, fluid pressure line, orifice valve group and accumulator, it is characterised in that: it also includes the amplitude sense resistance device being installed in parallel with orifice valve group.The present invention regulates the size of hydro-pneumatic spring damping force by the reciprocating motion of the floating piston in amplitude sense resistance device.When vehicle travels in good road surface, Suspension movement amplitude is less, and now hydro-pneumatic spring can provide less damping force, improves ride comfort；When vehicle is when turning to or travel on cross-country road, and Suspension movement amplitude is relatively big, and now hydro-pneumatic spring can provide bigger damping force, improves control stability and driving safety.The present invention can provide the damping characteristic that the size with suspension amplitude adapts, and improves car load ride comfort and control stability；Reduce connecting line diameter, the beneficially layout of car load parts；Simple and reliable for structure.
Description
Technical field
The present invention relates to the hydro-pneumatic spring on vehicle suspension, a kind of can sense the amplitude of suspension when vehicle travels, effectively regulation vibration damping Amplitude sense resistive hydro-pneumatic spring。
Background technology
nullAt present，It is applied to the hydro-pneumatic spring of military vehicle or engineering truck，It is designed to split-type structural to possess suspension rigid locking function，I.e. it is formed by connecting by pipeline and orifice valve group between oil gas cylinder and accumulator，There is certain shortcoming and defect in said structure，It is in particular in: 1. the diameter of connecting line is the thickest: be applied to the tare that hydro-pneumatic spring itself carrying of military vehicle or engineering truck is bigger，To such an extent as to the force value in hydro-pneumatic spring can the highest (interior pressure about 10Mpa during stationary vehicle，Pressure about 25Mpa in vehicle travel process)，Typically by the way of increasing hydro-pneumatic spring cylinder barrel interior diameter, interior pressure is reduced in design，So in vehicle travel process, the flow of fluid can increase again a lot，Too small pipeline diameter adds the damping force of hydro-pneumatic spring，Excessive damping force is unfavorable for the ride comfort that vehicle travels，So the diameter of connecting line can only be strengthened；2. the diameter of connecting line is the thickest, and the bending diameter of pipeline becomes big, is difficult to arrange in limited car load space.The most generally selecting the vehicle of conventional oil air spring, the stiffness characteristics of hydro-pneumatic spring and damping characteristic are required for being pre-designed and mating, and coupling hydro-pneumatic spring damping characteristic needs compromise comfortableness and control stability to determine, damping characteristic can not regulate.
Summary of the invention
In order to solve problem above, the present invention provides a kind of amplitude sense resistive hydro-pneumatic spring, and this hydro-pneumatic spring is simple and reasonable, and arrangement is convenient, and suspension damping characteristic can change with the change of Suspension movement amplitude.
The object of the present invention is achieved like this, and this hydro-pneumatic spring includes upper end union joint, piston, working cylinder, high-pressure sealing ring, piston rod, joint ball head, fluid pressure line, orifice valve group and accumulator, it is characterised in that: it also includes the amplitude sense resistance device M being installed in parallel with orifice valve group.
Described amplitude sense resistance device M includes end cap, outer cylinder, volute spring I, piston packing, guidance tape, floating piston, volute spring II and end cap seal circle, wherein end cap one end connects fluid pressure line, and the end cap other end is connected with outer cylinder by screw thread, and uses end cap seal circle to seal；Floating piston is placed in outer cylinder, outer cylinder is divided into C chamber and D chamber, guidance tape and piston packing are separately mounted on the groove of floating piston excircle；The bigger diameter end of volute spring I and volute spring II is stuck in the draw-in groove of end cap, and miner diameter end is suspended in C chamber and D intracavity.
The two ends of described orifice valve group are connected by fluid pressure line, form loop with accumulator, amplitude sense resistance device M, are filled with the nitrogen of certain pressure in accumulator.
In order to realize regulating C chamber and the volume in D chamber in outer cylinder by rotating two ends end caps, described end cap is threaded connection the adjustment type structure constituting amplitude sense resistance device M in being arranged on outer cylinder.When end cap turns to outer cylinder inward turning, in amplitude sense resistance device, the stroke of floating piston reduces；On the contrary, when end cap is to outer cylinder external rotation, in amplitude sense resistance device, the stroke of floating piston increases.Described amplitude sense resistance device M can realize the regulation effect of damping force.
The present invention has the advantages that:
1, due to the fact that employing said structure, when vehicle travels in good road surface, Suspension movement amplitude is less, and now hydro-pneumatic spring can provide less damping force, improves ride comfort；When vehicle is when turning to or travel on cross-country road, and Suspension movement amplitude is relatively big, and now hydro-pneumatic spring can provide bigger damping force, improves control stability and driving safety.
2, the present invention can provide the damping characteristic that the size with suspension amplitude adapts, and improves car load ride comfort and control stability, reduces the diameter of connecting line simultaneously, and beneficially the layout of car load parts, simple and reliable for structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of amplitude sense resistive hydro-pneumatic spring of the present invention.
Fig. 2 is the structure for amplifying schematic diagram of amplitude sense of the present invention resistance device.
Fig. 3 is that in amplitude sense of the present invention resistance device, end cap is arranged on another embodiment structure for amplifying schematic diagram in outer cylinder.
In figure: 1, upper end union joint, 2, piston, 3, working cylinder, 4, high-pressure sealing ring, 5, piston rod, 6, joint ball head, 7, connecting line, 8, orifice valve group, 9, end cap, 10, outer cylinder, 11, volute spring I, 12, piston packing, 13, guidance tape, 14, floating piston, 15, volute spring II, 16, end cap seal circle, 17, accumulator.
Detailed description of the invention
As shown in Figure 1: this hydro-pneumatic spring includes upper end union joint 1, piston 2, working cylinder 3, high-pressure sealing ring 4, piston rod 5, joint ball head 6, fluid pressure line 7, orifice valve group 8, accumulator 17, and it also includes the amplitude sense resistance device M being installed in parallel with orifice valve group 8.
As shown in Figure 2: described amplitude sense resistance device M includes end cap 9, outer cylinder 10, volute spring I 11, piston packing 12, guidance tape 13, floating piston 14, volute spring II 15 and end cap seal circle 16, wherein end cap 9 one end connects fluid pressure line 7, and end cap 9 other end is connected with outer cylinder 10 by screw thread, and uses end cap seal circle 16 to seal；Floating piston 14 is placed in outer cylinder 10, outer cylinder 10 is divided into C chamber and D chamber, guidance tape 13 and piston packing 12 and is separately mounted on floating piston 14 excircle；The bigger diameter end of volute spring I 11 and volute spring II 15 is stuck in the draw-in groove of end cap 9, and miner diameter end is suspended in C chamber and D intracavity.
Described piston 2 is threadeded with piston 2 with piston rod 5 internal composition A chamber, piston rod 5, and joint ball head 6 is placed in the lower end of piston rod 5, and high-pressure sealing ring 4 is placed on piston rod 5 excircle, and working cylinder 3 and piston rod 5 form B chamber.
The two ends of described orifice valve group 8 are connected by fluid pressure line 7, form loop with accumulator 17, amplitude sense resistance device M.
Being the adjustment type structure of amplitude sense resistance device M as shown in Figure 3, described end cap 9 is threaded connection in being arranged on outer cylinder 10, rotates end cap 9 scalable regulation C chamber, two ends and the volume in D chamber.When end cap 9 rotates in outer cylinder 10, in amplitude sense resistance device M, the stroke of floating piston 14 reduces；On the contrary, when end cap 9 is to outer cylinder 10 external rotation, in amplitude sense resistance device M, the stroke of floating piston 14 increases.
Operation principle:
When vehicle travels in good road surface, suspension amplitude is less, joint ball head 6 upwardly piston rod 5 moves, A chamber fluid in piston rod 5 is extruded, a part of fluid is extruded to B intracavity, a part of fluid is in fluid pressure line 7 flows to amplitude sense resistance device M and orifice valve group 8, owing to the amplitude of piston rod 5 motion is less, the most a small amount of fluid flows into accumulator 17 by orifice valve group 8, remaining fluid flows into C chamber, floating piston 14 is promoted to extrude volute spring II 15, small axially-movable is done in outer cylinder 10, floating piston 14 promotes D chamber fluid to flow into accumulator 17 through fluid pressure line 7；When piston rod 5 moves downward, fluid is squeezed out by accumulator 17, and it is same as described above that fluid flows through position, and fluid flows to contrary to the above.In this course, floating piston 14 does not reach at end cap 9, and now, hydro-pneumatic spring is provided less suspension damping power, thus vehicle body vertical acceleration peak value that human body most sensitive is greatly reduced, and improves ride quality.
When vehicle travels at cross-country road, suspension amplitude increases.Joint ball head 6 upwardly piston rod 5 moves, A chamber fluid in piston rod 5 is extruded, a part of fluid is extruded to B intracavity, a part of fluid is in fluid pressure line 7 flows to amplitude sense resistance device M and orifice valve group 8, owing to the amplitude of piston rod movement is bigger, the fluid flowing into C chamber is shifted onto floating piston 14 at end cap 9 soon, and now the fluid part fluid in A chamber flows into amplitude sense resistance device M, and major part fluid flows into accumulator 17 by orifice valve group 8；When piston rod 5 moves downward, fluid is squeezed out by accumulator 17, and it is same as described above that fluid flows through position, and fluid flows to contrary to the above.In this course, floating piston 14 is nearly always at end cap 9, and now, hydro-pneumatic spring is provided bigger suspension damping power, it is ensured that tire tack and vehicle safety.
Claims (3)
1. an amplitude sense resistive hydro-pneumatic spring, this hydro-pneumatic spring includes upper end union joint (1), piston (2), working cylinder (3), high pressure sealing
Part (4), piston rod (5), joint ball head (6), fluid pressure line (7), orifice valve group (8) and accumulator (17), it is characterised in that: it is also
Including amplitude sense resistance device (M) being installed in parallel with orifice valve group (8)；Described amplitude sense resistance device (M) includes end cap (9), outer shell
Cylinder (10), volute spring I (11), piston packing (12), guidance tape (13), floating piston (14), volute spring II (15) and end
Lid sealing ring (16), wherein end cap (9) one end connects fluid pressure line (7), and end cap (9) other end is connected with outer cylinder (10) by screw thread,
And use end cap seal circle (16) to seal；Floating piston (14) is placed in outer cylinder (10), and outer cylinder (10) is divided into C chamber and D chamber,
Guidance tape (13) and piston packing (12) are separately mounted on the groove of floating piston (14) excircle；Volute spring I (11) and cone
The bigger diameter end of shape spring II (15) is stuck in the draw-in groove of end cap (9), and miner diameter end is suspended in C chamber and D intracavity.
A kind of amplitude sense resistive hydro-pneumatic spring the most according to claim 1, it is characterised in that: the two ends of described orifice valve group (8)
Being connected by fluid pressure line (7), form loop with accumulator (17), amplitude sense resistance device (M), accumulator is filled with certain pressure in (17)
Nitrogen.
Amplitude sense resistance device (M) in a kind of amplitude sense resistive hydro-pneumatic spring the most according to claim 1, it is characterised in that: in order to
Realizing regulating outer cylinder (10) interior C chamber and the volume in D chamber by rotating two ends end cap (9), described end cap (9) is arranged on outer cylinder
(10) the adjustment type structure constituting amplitude sense resistance device (M), when end cap (9) turns to outer cylinder inward turning, amplitude it are threaded connection in
In sense resistance device, the stroke of floating piston (14) reduces；On the contrary, when end cap (9) is to outer cylinder external rotation, in amplitude sense resistance device
The stroke of floating piston (14) increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384682.6A CN104421374B (en) | 2013-08-30 | 2013-08-30 | Amplitude sense resistive hydro-pneumatic spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384682.6A CN104421374B (en) | 2013-08-30 | 2013-08-30 | Amplitude sense resistive hydro-pneumatic spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104421374A CN104421374A (en) | 2015-03-18 |
| CN104421374B true CN104421374B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310384682.6A Active CN104421374B (en) | 2013-08-30 | 2013-08-30 | Amplitude sense resistive hydro-pneumatic spring |
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| CN (1) | CN104421374B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112431884A (en) * | 2020-10-09 | 2021-03-02 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Air spring additional air chamber, air spring control assembly and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4147502B2 (en) * | 1998-06-26 | 2008-09-10 | 株式会社日立製作所 | Damping force adjustable hydraulic shock absorber |
| JP4081589B2 (en) * | 1998-12-24 | 2008-04-30 | 株式会社日立製作所 | Damping force adjustable hydraulic shock absorber |
| JP5387841B2 (en) * | 2009-09-30 | 2014-01-15 | 日立オートモティブシステムズ株式会社 | Damping force adjustable shock absorber |
| CN203532618U (en) * | 2013-08-30 | 2014-04-09 | 长春孔辉汽车科技有限公司 | Amplitude induction damping type hydro-pneumatic spring |
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| Publication number | Publication date |
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| CN104421374A (en) | 2015-03-18 |
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Address after: 130312 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Applicant after: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO.,LTD. Address before: 130012 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Applicant before: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO., LTD. TO: CHANGCHUN KONGHUI AUTOMATIVE TECHNOLOGY CO., LTD. Free format text: CORRECT: ADDRESS; FROM: 130012 CHANGCHUN, JILIN PROVINCE TO: 130312 CHANGCHUN, JILIN PROVINCE |
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Effective date of registration: 20230801 Address after: 313000 Building 1, No. 788 Xifeng Road, South Taihu New District, Wuxing District, Huzhou City, Zhejiang Province Patentee after: Zhejiang Kong Hui Automobile Technology Co.,Ltd. Address before: 130312 No. 5177 Chaoda Road, Changchun High-tech Industrial Development Zone, Jilin Province Patentee before: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO.,LTD. |