CN108488297A - A kind of hydro-pneumatic spring - Google Patents
A kind of hydro-pneumatic spring Download PDFInfo
- Publication number
- CN108488297A CN108488297A CN201810320289.3A CN201810320289A CN108488297A CN 108488297 A CN108488297 A CN 108488297A CN 201810320289 A CN201810320289 A CN 201810320289A CN 108488297 A CN108488297 A CN 108488297A
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- CN
- China
- Prior art keywords
- piston
- hydro
- oil pocket
- main
- pneumatic spring
- Prior art date
- 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
-
- 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
- F16F9/18—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 a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—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 a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube 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
- F16F9/3207—Constructional features
-
- 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
- F16F9/3214—Constructional features of pistons
-
- 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
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- 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
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
Abstract
The invention discloses a kind of hydro-pneumatic springs, including hydraulic cylinder, main piston；The cylindricality oil pocket filled with hydraulic oil is equipped in institute's hydraulic cylinder, the main piston is movably installed in the hydraulic cylinder, and it is main oil pocket and annular oil cavity two parts that the hydraulic cylinder, which is separated, and main oil pocket is connected with annular oil cavity by damping hole；The main piston is internally provided with cylindrical cavity, which is divided into piston air cavity and piston oil pocket by a floating piston, and the piston oil pocket is connected with the main oil pocket.The present invention provides a kind of hydro-pneumatic springs of optimization buffer structure, improve buffer structure, simplify the structure arrangement of hydro-pneumatic spring system, are conducive to the cramped construction design of system.
Description
Technical field
The present invention relates to damper system technical fields, more particularly to a kind of hydro-pneumatic spring of optimization buffer structure.
Background technology
Hydro-pneumatic spring is a kind of mechanical component for being damped using oil pressure and realizing buffering, is widely used in the suspension system of vehicle
In.Hydro-pneumatic spring is as the critical elements for providing bearing capacity and damping shock absorption in suspension system, and the design of hydro-pneumatic spring is always
It is the emphasis of suspension system designs.
Hydro-pneumatic spring transmits pressure, using inert gas as elastic fluid, internal restriction, check valve etc. with hydraulic oil
Instead of common pivotal connection, hydro-pneumatic spring is made to integrate elastic element and damper function, radial dimension is small, to whole
The arrangement of vehicle is advantageous.Hydro-pneumatic spring has nonlinear stiffness characteristic and nonlinear dampling characteristic simultaneously, can improve vehicle one
As form ride comfort on road surface, and larger rigidity can be provided on macrorelief road surface, keep the driving posture of vehicle.
But since traditional hydro-pneumatic spring is mostly using the plug-in mode of gas energy storage device, this arrangement meeting
Increase more appurtenances, including air bag, connecting pipe etc., this structure degree of forming is low, is unfavorable for compact type design；
The sealing performance between each component requires relatively high simultaneously, causes the manufacturing cost of system relatively high.
Invention content
It is an object of the invention to overcome the deficiency of the prior art, a kind of hydro-pneumatic spring of optimization buffer structure is provided,
Buffer structure is improved, the structure arrangement of hydro-pneumatic spring system is simplified, is conducive to the cramped construction design of system.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of hydro-pneumatic spring, including hydraulic cylinder, main piston；The cylindricality oil pocket filled with hydraulic oil is equipped in institute's hydraulic cylinder,
The main piston is movably installed in the hydraulic cylinder, and it is main oil pocket and annular oil cavity two parts that the hydraulic cylinder, which separated, and main oil
Chamber is connected with annular oil cavity by damping hole；The main piston is internally provided with cylindrical cavity, and the cylindrical cavity is floating by one
Piston is divided into piston air cavity and piston oil pocket, and the piston oil pocket is connected with the main oil pocket.
As a preferred embodiment, the main piston is equipped with along main oil pocket to the check valve of annular oil cavity one-way conduction.
As a preferred embodiment, the piston air cavity, annular oil cavity and main oil pocket are respectively equipped with pressure sensor.
As a preferred embodiment, the cylindrical cavity is equipped with flange step used for positioning, the minimum fortune of the floating piston
Dynamic position is limited by the flange step.
As a preferred embodiment, the main piston is equipped with throttle orifice, the piston oil pocket and the main oil pocket pass through the throttling
Hole is connected.
As a preferred embodiment, the air cavity fills high pressure nitrogen.
As a preferred embodiment, the bottom of the hydraulic cylinder is equipped with lower mounting flange, the top of the piston rod is equipped with upper
Mounting flange.
As a preferred embodiment, the sealing part of the hydraulic cylinder is equipped with sealing guiding mechanism.
The beneficial effects of the invention are as follows：
1, the solid piston bar in traditional oleo-pneumatic suspension is designed to cylindrical cavity, and makes the cylindrical cavity and main oil
Chamber is connected to, and compared to traditional external energy storage type hydro-pneumatic spring, air cavity is embedded in hydro-pneumatic spring rod end chamber, chamber is reduced
The quantity and external add-in component of room simplify the structure arrangement of hydro-pneumatic spring system, are conducive to the cramped construction design of system.
2, main piston Integration Design is provided with check valve and throttle orifice on hydro-pneumatic spring main piston, provides non-linear
Damping characteristic realizes shock absorber effect；Flange step is designed on main piston simultaneously, limitation floating piston does not depart from hollow piston
Bar moves, and ensures the initial inflation process volume of air cavity.
3, since the work instantaneous pressure of each chamber can be by external pressure sensor monitoring, to realize suspension
The data that active control provides are supported.
Invention is further described in detail with reference to the accompanying drawings and embodiments；But a kind of hydro-pneumatic spring of the present invention is not
It is confined to embodiment.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the side view of the main piston of the present invention；
Fig. 3 is the end view drawing of the main piston of the present invention.
Specific implementation mode
Embodiment：
A kind of hydro-pneumatic spring shown in Figure 1, of the invention, including hydraulic cylinder 13, main piston 7；It is set in institute's hydraulic cylinder 13
There is the cylindricality oil pocket filled with hydraulic oil, the main piston 7 is movably installed in the hydraulic cylinder 13, and the hydraulic cylinder 13 is divided into
22 two parts of main oil pocket 33 and annular oil cavity, and main oil pocket 33 is connected with annular oil cavity 22 by damping hole；The main piston 7
Be internally provided with cylindrical cavity, which is divided into piston air cavity 11 and piston oil pocket, the work by a floating piston 8
Plug oil pocket is connected with the main oil pocket 33.
The main piston 7 is equipped with along main oil pocket 33 to the check valve 4 of 22 one-way conduction of annular oil cavity.The piston air cavity
11, annular oil cavity 22 and main oil pocket 33 are respectively equipped with pressure sensor 6.The cylindrical cavity is equipped with flange step used for positioning
14, the minimum movement position of the floating piston 8 is limited by the flange step 14.
The main piston 7 is equipped with throttle orifice 9, and the piston oil pocket is connected with the main oil pocket 33 by the throttle orifice 9.
The air cavity 11 fills high pressure nitrogen.The bottom of the hydraulic cylinder 13 is equipped with lower mounting flange 12.The top of the main piston 7
Equipped with upper mounting flange 11.
The interconnected relationship of each building block is as follows：
13 main oil pocket 3 of hydraulic cylinder is connected to annular oil cavity 2 by the damper valves that throttle orifice 9 and check valve 4 form；It is hollow
7 inner cavity of main piston is divided into oil pocket and air cavity 1 by floating piston 8, while oil pocket is directly connected to main oil pocket 3.Therefore, entire oil
Gas spring system is separated into three chambers, compared with traditional hydro-pneumatic spring, chamber quantity by main piston 7 and floating piston 8
It is less, reduce the structural complexity of hydro-pneumatic spring.
The concrete operating principle of the present invention is as follows：
Vehicle, also can be with up and down motion with the fluctuating vehicle body on road surface during traveling.When main piston 7 and main work
When filling in 7 opposing hydraulic cylinders 13 and shrinking, the fluid volume volume of 3 reduction of main oil pocket is more than 2 increased volume of annular oil cavity, therefore fluid
By squeezing the gas in the compression air cavity 1 of floating piston 8, check valve 4 is opened at this time, and main piston 7 and 7 component of main piston are with respect to work
Make when hydraulic cylinder 13 moves that the damping force that is subject to is smaller, this is equivalent to the effect of the spring in traditional suspension；When piston cylinder is opposite
When hydraulic cylinder 13 stretches, 3 increased volume of main oil pocket is more than the volume of 2 reduction of annular oil cavity, therefore 1 volume of air cavity restores,
Fluid flows back to main oil pocket 3, at this time check valve 4 close, the damping force that main piston 7 and piston component are subject to when being moved with respect to cylinder barrel compared with
Greatly, this is equivalent to the effect of the damper in traditional suspension.By the effect of check valve 4, it is suspended in compression and stretching travel and produces
Raw asymmetric damping force, preferably alleviates the vibration of vehicle body, improves the stationarity of vehicle under steam.It is compressing and was stretching
The work instant pressure of each chamber in journey can be monitored by external pressure sensor 6.
The specific control process of the present invention is as follows：
When the vehicle is running, road surface, which rises and falls, causes main piston 7 and main piston 7 to be moved above and below in cylinder barrel, in this way, makes master
The fluid of oil pocket 3 and annular oil cavity 2 reciprocally passes through 4 hole of damping hole and check valve on main piston 7, tool under the action of pressure difference
Energy is consumed when having the fluid of pressure difference to flow through 4 hole of damping hole and check valve, the vibration for automobile of decaying, this process is formed oil
The damping characteristic of gas suspension.And the high pressure nitrogen full of sealing in air cavity 1, the elasticity generated by the compression of high pressure nitrogen
Power bears load, and buffering ground faces the impact of vehicle, this process is formed the elastic characteristic of hydro-pneumatic suspension system.
In conclusion the design focal point of the present invention is：
A kind of hydro-pneumatic spring of the present invention saves traditional oleo-pneumatic suspension by changing the inner space of traditional main piston 7
External accumulator reduces the quantity of chamber so that system structure on the basis of realizing the basic function of traditional hydro-pneumatic spring
More simplify and compact.Damping hole is reciprocated through under the action of pressure difference and check valve 4 generates difference by fluid in oil pocket
Damping force decaying automobile vibration, high pressure nitrogen is full of in the air cavity 1 built in another aspect, is led in the up and down motion of suspension
The flexible deformation of nitrogen is crossed to bear load, alleviates impact.By optimizing the connected relation of the gentle body of hydro-pneumatic spring system fluid,
The quantity for reducing system chamber, not only simplifies the structure of hydro-pneumatic spring system, while the work instantaneous pressure of each chamber is all
It can be monitored by external pressure sensor 6, realize that active control provides data and supports for suspension.
A kind of hydro-pneumatic spring that above-described embodiment only is used for further illustrating the present invention, but the invention is not limited in implementations
Example, it is every according to the technical essence of the invention to any simple modification, equivalent change and modification made by above example, fall
Enter in the protection domain of technical solution of the present invention.
Claims (8)
1. a kind of hydro-pneumatic spring, it is characterised in that：Including hydraulic cylinder, main piston；It is equipped with filled with hydraulic oil in institute's hydraulic cylinder
Cylindricality oil pocket, the main piston is movably installed in the hydraulic cylinder, and it is main oil pocket and annular oil cavity two that the hydraulic cylinder, which is separated,
Point, and main oil pocket is connected with annular oil cavity by damping hole；The main piston is internally provided with cylindrical cavity, the cylindrical cavity
It is divided into piston air cavity and piston oil pocket by a floating piston, the piston oil pocket is connected with the main oil pocket.
2. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The main piston is equipped with along main oil pocket to annular
The check valve of oil pocket one-way conduction.
3. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The piston air cavity, annular oil cavity and main oil
Chamber is respectively equipped with pressure sensor.
4. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The cylindrical cavity is equipped with used for positioning convex
The minimum movement position of edge platform rank, the floating piston is limited by the flange step.
5. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The main piston is equipped with throttle orifice, the work
Plug oil pocket is connected with the main oil pocket by the throttle orifice.
6. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The air cavity fills high pressure nitrogen.
7. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The bottom of the hydraulic cylinder is equipped with lower Method for Installation
The top of blue disk, the piston rod is equipped with upper mounting flange.
8. a kind of hydro-pneumatic spring according to claim 1, it is characterised in that：The sealing part of the hydraulic cylinder is equipped with sealing and leads
To mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320289.3A CN108488297A (en) | 2018-04-11 | 2018-04-11 | A kind of hydro-pneumatic spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320289.3A CN108488297A (en) | 2018-04-11 | 2018-04-11 | A kind of hydro-pneumatic spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108488297A true CN108488297A (en) | 2018-09-04 |
Family
ID=63315322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320289.3A Pending CN108488297A (en) | 2018-04-11 | 2018-04-11 | A kind of hydro-pneumatic spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108488297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184902A (en) * | 2019-07-10 | 2019-08-30 | 重庆三峡学院 | A kind of bridge structure composite anti-collision hits energy-consumption shock-absorption device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB668543A (en) * | 1948-12-30 | 1952-03-19 | Electro Hydraulics Ltd | Improvements in or relating to shock absorbers |
| CN2811665Y (en) * | 2005-05-26 | 2006-08-30 | 江苏大学 | Single-chamber oil-gas separation type oil-gas spring with nonlinear characteristics |
| CN201747842U (en) * | 2010-07-26 | 2011-02-16 | 河北万众汽车零部件制造有限公司 | Single barrel type oil and gas spring |
| CN103527697A (en) * | 2013-11-01 | 2014-01-22 | 武汉天捷重型装备股份有限公司 | Hydro-pneumatic spring suspension cylinder |
| CN106134403B (en) * | 2010-12-16 | 2014-02-26 | 内蒙古第一机械集团有限公司 | A kind of controllable damping hydro-pneumatic spring |
| CN104196817A (en) * | 2014-09-02 | 2014-12-10 | 徐州徐工液压件有限公司 | Oil-gas two-medium damping hydraulic cylinder |
| CN208816583U (en) * | 2018-04-11 | 2019-05-03 | 华侨大学 | A kind of hydro-pneumatic spring |
-
2018
- 2018-04-11 CN CN201810320289.3A patent/CN108488297A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB668543A (en) * | 1948-12-30 | 1952-03-19 | Electro Hydraulics Ltd | Improvements in or relating to shock absorbers |
| CN2811665Y (en) * | 2005-05-26 | 2006-08-30 | 江苏大学 | Single-chamber oil-gas separation type oil-gas spring with nonlinear characteristics |
| CN201747842U (en) * | 2010-07-26 | 2011-02-16 | 河北万众汽车零部件制造有限公司 | Single barrel type oil and gas spring |
| CN106134403B (en) * | 2010-12-16 | 2014-02-26 | 内蒙古第一机械集团有限公司 | A kind of controllable damping hydro-pneumatic spring |
| CN103527697A (en) * | 2013-11-01 | 2014-01-22 | 武汉天捷重型装备股份有限公司 | Hydro-pneumatic spring suspension cylinder |
| CN104196817A (en) * | 2014-09-02 | 2014-12-10 | 徐州徐工液压件有限公司 | Oil-gas two-medium damping hydraulic cylinder |
| CN208816583U (en) * | 2018-04-11 | 2019-05-03 | 华侨大学 | A kind of hydro-pneumatic spring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184902A (en) * | 2019-07-10 | 2019-08-30 | 重庆三峡学院 | A kind of bridge structure composite anti-collision hits energy-consumption shock-absorption device |
| CN110184902B (en) * | 2019-07-10 | 2023-12-22 | 重庆三峡学院 | Combined type anti-collision energy-consumption damping device for bridge structure |
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