CN105134855A - Novel oil-gas damper - Google Patents
Novel oil-gas damper Download PDFInfo
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- CN105134855A CN105134855A CN201510674208.6A CN201510674208A CN105134855A CN 105134855 A CN105134855 A CN 105134855A CN 201510674208 A CN201510674208 A CN 201510674208A CN 105134855 A CN105134855 A CN 105134855A
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Abstract
The invention discloses a novel oil-gas damper which comprises a hydraulic cylinder and a piston cylinder, wherein the hydraulic cylinder is divided into an upper cavity and a lower cavity by a floating piston A; the piston cylinder is divided into an upper cavity and a lower cavity by a floating piston B; the upper cavity of the piston cylinder is fully filled with an inert gas nitrogen; the lower cavity of the piston cylinder is fully filled with hydraulic oil; the upper cavity of the hydraulic cylinder and the piston cylinder are positioned above the lower cavity of the hydraulic cylinder; and the upper cavity of the hydraulic cylinder is positioned on the periphery of the piston cylinder. The novel oil-gas damper saves the energy storage device in the traditional oil-gas damper; and the oil cavity and gas cavity in the piston cylinder have the effects of oil compensation and shock absorption. By adopting the structure, the damper is more compact, enhances the operation efficiency and lowers the cost.
Description
Technical field
The present invention relates to the technology in car shock mitigation system, damper system field, referring in particular to a kind of Novel oil gas damper hydraulic oil and inert gas combined by changing conventional damper structural type.
Background technique
In the later stage fifties, oil gas damper is applied to vehicle by people gradually, to improve the performance such as vehicle riding comfort, control stability.Traditional oil gas damper is applied in the suspension system of vehicle more, and suspension system is the key that raising vehicle run smoothness and control stability, minimizing dynamic load cause damage of components.But the traditional suspension based on classical theory of vibration isolation cannot take into account the requirement of these several respects, and full Active suspension can meet this requirement, but can not be put to engineering reality because of expensive simultaneously.And hydro pneumatic suspension can not only meet the dynamic (dynamical) requirement of vehicle ride as a kind of semi-active suspension, and cost is much lower more than full Active suspension.Meanwhile, due to the characteristic of oil gas damper, more than be applied to the damping etc. of the equipments such as cannon in the damping of some mechanical structures, military affairs.
Oil gas damper is by gentle for oil combination, utilize the elastic element of compressibility as suspension of gas, the flow resistance of fluid is utilized to realize vibration damping, utilize again the incompressibility of fluid to realize the transmission of motion and power comparatively accurately, the easy control utilizing fluid to flow realizes various powerful control simultaneously.Therefore, oil gas damper not only has good elastic characteristic, the more important thing is that it can realize the good control of motor racing attitude etc. easily.
For improving vehicle run smoothness, external minibus, truck and engineering machinery have employed oil gas damper already, more general especially on mine self-unloading truck.The impact force that ground passes to vehicle body can be reduced when vehicle travels on rough road, the impact to automobile when ore falls can be reduced when adopting power shovel to load ore, less vibration frequency can be obtained when zero load especially.Due to unloaded and fully loaded load change amplitude is large, vehicle body height changes greatly, now as being equipped with and can the oil gas damper of vehicle body height automatically can being regulated then can to obtain desirable elastic characteristic with load change and make vehicle have good smoothness, thus improve the working condition of driver, improve the average overall travel speed of vehicle and the transport production rate of vehicle.
But need an external accumulator to play the effect of fluid compensation and buffering when damper moves up and down because traditional oil gas damper adopts when oil cylinder piston system, owing to being arranged in outside so its barrier propterty is poor, the airtight performance simultaneously risen for energy storage requires higher, causes the cost of system larger.
Summary of the invention
The object of the present invention is to provide a kind of novel oil gas damper, it can make system architecture compact, increases work efficiency, and reduces manufacture cost.
For this reason, the present invention is by the following technical solutions:
A novel oil gas damper, comprises oil hydraulic cylinder and piston cylinder, and described oil hydraulic cylinder is divided into upper chamber and lower chambers by floating piston A; Described piston cylinder is divided into upper chamber and lower chambers by floating piston B, and described piston cylinder upper chamber is full of inert nitrogen gas, and described piston cylinder lower chambers is full of hydraulic oil; Described oil hydraulic cylinder upper chamber and piston cylinder are positioned on oil hydraulic cylinder lower chambers, and described oil hydraulic cylinder upper chamber is positioned at piston cylinder periphery.
Preferably, the lower chambers of described piston cylinder is connected with the lower chambers of oil hydraulic cylinder with one-way valve a by damping hole a.
Preferably, described floating piston A moves up and down to impel between the lower chambers of piston cylinder and the lower chambers of oil hydraulic cylinder and fluid flowing occurs, and produces damping force, floating piston B is also moved up and down thereupon when flowing through damping hole a and one-way valve a.
Preferably, described oil hydraulic cylinder upper chamber is full of hydraulic oil, and described oil hydraulic cylinder lower chambers is full of hydraulic oil.
Preferably, described oil hydraulic cylinder upper chamber is connected with oil hydraulic cylinder lower chambers with damping hole c by damping hole b, and fluid is flowed between oil hydraulic cylinder upper chamber and oil hydraulic cylinder lower chambers by damping hole b and damping hole c, produces damping force.
Preferably, described oil hydraulic cylinder upper chamber is connected with oil hydraulic cylinder lower chambers with one-way valve c by one-way valve b, and fluid is flowed between oil hydraulic cylinder upper chamber and oil hydraulic cylinder lower chambers by one-way valve b and one-way valve c, produces damping force.
Preferably, described oil hydraulic cylinder upper chamber is full of inert nitrogen gas, and described oil hydraulic cylinder lower chambers is full of hydraulic oil.
The present invention adopts above technological scheme, compared with prior art has obvious advantage and beneficial effect, specifically, comprises as follows:
One, the solid piston bar design in traditional oil gas damper is become hollow, this hollow cavity is divided into upper and lower cavity by floating piston, has both played the effect of the external accumulator of traditional oils gas damper and has reduced the working pressure of system under same loading condition by increasing work area.Make the structure of oil gas damper more compact like this, save the installing space of system, thus reduce costs.
Two, because liquid has viscosity, have resistance during flowing and produce, so in order to overcome resistance, working fluid needs loss part energy.Directly circulated by damping hole or one-way valve between each oil cylinder in this oil gas damper, owing to saving accumulator external in oil gas damper in the past, so losing along stroke pressure of producing in connecting tube when avoiding the fluid flow direction and flow out accumulator, improve system effectiveness.
Three, in compression stroke, because one-way valve is opened, the damping force be subject to when piston and piston assembly move relative to cylinder barrel is less, and this is equivalent to the spring action in traditional suspension; In the later case, because of closed check valve, the damping force be subject to when piston and the motion of piston assembly relative cylinder barrel is comparatively large, and this is equivalent to the damper action in traditional suspension.
Accompanying drawing explanation
Fig. 1 is the surface structure schematic diagram of the novel oil gas damper of the present invention.
Fig. 2 is the generalized section of the novel oil gas damper embodiment one of the present invention.
Fig. 3 is the generalized section of the novel oil gas damper embodiment two of the present invention.
Fig. 4 is the generalized section of the novel oil gas damper embodiment three of the present invention.
Accompanying drawing identifier declaration:
01, floating piston A02, floating piston B03, damping hole a04, one-way valve a
05, damping hole b06, damping hole c07, one-way valve b08, one-way valve c
1, oil hydraulic cylinder 11, oil hydraulic cylinder upper chamber 12, oil hydraulic cylinder epicoele air cavity
2, piston cylinder 21, piston cylinder upper chamber 22, piston cylinder lower chambers
Embodiment
In order to make object of the present invention, feature and advantage more clear, below in conjunction with drawings and Examples, explanation is specifically made to the specific embodiment of the present invention, in the following description, set forth a lot of concrete details so that understand the present invention fully, but the present invention can implement in other modes being much different from description.Therefore, the present invention is not by the restriction of the concrete enforcement of following discloses.
Embodiment one
A novel oil gas damper, as shown in Figure 1 and Figure 2, comprise oil hydraulic cylinder 1 and piston cylinder 2, described oil hydraulic cylinder 1 is divided into upper chamber 11 and lower chambers 12 by floating piston A01; Described piston cylinder 2 is divided into upper chamber 21 and lower chambers 22 by floating piston B02, and described piston cylinder upper chamber 21 is full of inert nitrogen gas, and described piston cylinder lower chambers 22 is full of hydraulic oil; Described oil hydraulic cylinder upper chamber 11 and piston cylinder 2 are positioned on oil hydraulic cylinder lower chambers 12, and it is peripheral that described oil hydraulic cylinder upper chamber 11 is positioned at piston cylinder 2.
Wherein, the lower chambers 22 of described piston cylinder is connected with the lower chambers 12 of oil hydraulic cylinder with one-way valve a04 by damping hole a03; Described floating piston A01 moves up and down to impel between the lower chambers 22 of piston cylinder and the lower chambers 12 of oil hydraulic cylinder and fluid flowing occurs, and produces damping force, floating piston B02 is also moved up and down thereupon when flowing through damping hole a03 and one-way valve a04.
Wherein, described oil hydraulic cylinder upper chamber 11 is full of hydraulic oil, and described oil hydraulic cylinder lower chambers 12 is full of hydraulic oil; Described oil hydraulic cylinder epicoele 11 Room is connected with oil hydraulic cylinder lower chambers 12 with damping hole c06 by damping hole b05, and fluid is flowed between oil hydraulic cylinder upper chamber 11 and oil hydraulic cylinder lower chambers 12 by damping hole b05 and damping hole c06, produces damping force.
Embodiment two
The present embodiment is uniquely different from embodiment one to be, as shown in Figure 3, described oil hydraulic cylinder upper chamber 11 is full of hydraulic oil, described oil hydraulic cylinder lower chambers 12 is full of hydraulic oil, described oil hydraulic cylinder upper chamber 11 is connected with oil hydraulic cylinder lower chambers 12 with one-way valve c08 by one-way valve b07, fluid is flowed between oil hydraulic cylinder upper chamber 11 and oil hydraulic cylinder lower chambers 12 by one-way valve b07 and one-way valve c08, produces damping force.
Embodiment three
The present embodiment is uniquely different from embodiment one to be, as shown in Figure 4, described oil hydraulic cylinder upper chamber 11 is full of inert nitrogen gas, and described oil hydraulic cylinder lower chambers 12 is full of hydraulic oil.Described oil hydraulic cylinder upper chamber is not connected with oil hydraulic cylinder lower chambers.
Specific works principle of the present invention, is described for embodiment one, as follows:
When piston cylinder 2 opposing hydraulic cylinder 1 shrinks, the volume that oil hydraulic cylinder lower chambers 12 reduces is greater than the volume that oil hydraulic cylinder upper chamber 11 increases, therefore fluid flows to piston cylinder lower chambers 22 and oil hydraulic cylinder upper chamber 11 by oil hydraulic cylinder lower chambers 12, the damping force be subject to when now one-way valve a04 unlatching floating piston and piston assembly move relative to cylinder barrel is less, and this is equivalent to the effect of the spring in traditional suspension; When piston cylinder 2 opposing hydraulic cylinder 1 stretches time, the volume that oil hydraulic cylinder lower chambers 12 increases is greater than the volume that oil hydraulic cylinder upper chamber 11 reduces, therefore fluid flows to oil hydraulic cylinder lower chambers 12 by piston cylinder lower chambers 22 and oil hydraulic cylinder upper chamber 11, the damping force be now subject to when one-way valve a04 closure piston and the motion of piston assembly relative cylinder barrel is comparatively large, and this is equivalent to the vibration damper effect in traditional suspension.By the effect of one-way valve a04, oil gas damper produces asymmetric damping force in compression and stretching travel, is applied in the vibration better can alleviating vehicle body in vehicle, improves vehicle stationarity under steam.
Concrete control procedure of the present invention is as follows:
(1), the compression stroke of oil gas damper
The floating piston of damper and piston cylinder 2 can move reciprocatingly relative to cylinder barrel, shrink relative to cylinder barrel at piston and piston cylinder 2, piston cylinder 2 moves downward, volume due to the minimizing of oil hydraulic cylinder lower chambers 12 is greater than the volume increased in oil hydraulic cylinder upper chamber 11, so time oil hydraulic cylinder lower chambers 12 in fluid compressed and moved to both direction: one is flow to piston cylinder lower chambers 22 by damping hole a03 and one-way valve a04, because the pressure increase of the fluid in piston cylinder lower chambers 22 makes the volume of inert nitrogen gas reduce by floating piston B02 further compression piston cylinder upper chamber 21, pressure increase, one is flow to oil hydraulic cylinder upper chamber 11 by damping hole b05 and damping hole c06, fluid can produce damping force when flowing through damping hole a, b, c and one-way valve D, this process, because one-way valve and damping hole open wide simultaneously, it is larger that it flows through area, therefore flow velocity when fluid flows through one-way valve and damping hole is relatively low, and its damping force produced is also relatively little.During nitrogen in the fluid compression piston cylinder upper chamber 21 in piston cylinder lower chambers 22, suppress the elastic force of advocating to lean on the gas in piston cylinder upper chamber 21 to produce that piston cylinder 2 moves, it acts on the elastic element-spring be equivalent in conventional suspension.
(2), the stretching travel of oil gas damper
If piston and piston cylinder 2 relatively cylinder barrel are upheld, then the fluid in oil hydraulic cylinder upper chamber 11 is compressed, and forces the fluid in oil hydraulic cylinder upper chamber 11 to be flowed to oil hydraulic cylinder lower chambers 12 by damping hole b05 and damping hole c06.Volume due to oil hydraulic cylinder lower chambers 12 increase is greater than the volume that oil hydraulic cylinder upper chamber 11 reduces, therefore the fluid in piston cylinder lower chambers 22 also flows to oil hydraulic cylinder lower chambers 12 (now one-way valve a04 is in closed condition) by damping hole a03, the fluid in piston cylinder lower chambers 22 is the gas compression that is subject in piston cylinder upper chamber 21 and then enter oil hydraulic cylinder lower chambers 12 because oil hydraulic cylinder lower chambers 12 volume increases.
Because one-way valve a04 is in closed condition in stretching travel, the damping force therefore produced is greater than the damping force in compression stroke, so just in time meets oil gas damper produces asymmetric damping force requirement when acting on.The damping force little spring action be equivalent in traditional suspension during compression, the vibration of damping force decay mechanical structure larger during stretching, is equivalent to the effect of the vibration damper in traditional suspension.
Floating piston A01 and floating piston B02 upper and lower motion in cylinder barrel, like this, make the fluid of oil hydraulic cylinder lower chambers 12 and piston cylinder lower chambers 22 under the effect of pressure reduction reciprocally by some damping holes and unidirectional valve opening, the consumed energy when fluid with pressure reduction flows through damping hole and unidirectional valve opening, attenuation vibration, this process just defines the damping characteristic of oil gas damper.And in the piston cylinder upper chamber 21 be connected with piston cylinder lower chambers 22, be full of closed high pressure nitrogen, carry out bearing load by the resiliently deformable of high pressure nitrogen, this process just defines the elastic characteristic of oil gas damper.
In sum, design focal point of the present invention is:
This novel oil gas damper, by changing the inner space of conventional piston cylinder, saving the external accumulator of traditional oils gas damper, making system architecture more compact.Under the effect of pressure reduction, damping hole is reciprocated through and one-way valve produces different damping force attenuation vibrations by fluid in oil pocket, built-in piston cylinder upper chamber 21 is full of high pressure nitrogen on the other hand, in the moving up and down of damper, carry out bearing load by the resiliently deformable of nitrogen, alleviate and impact.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a novel oil gas damper, is characterized in that, comprises oil hydraulic cylinder and piston cylinder, and described oil hydraulic cylinder is divided into upper chamber and lower chambers by floating piston A; Described piston cylinder is divided into upper chamber and lower chambers by floating piston B, and described piston cylinder upper chamber is full of inert nitrogen gas, and described piston cylinder lower chambers is full of hydraulic oil; Described oil hydraulic cylinder upper chamber and piston cylinder are positioned on oil hydraulic cylinder lower chambers, and described oil hydraulic cylinder upper chamber is positioned at piston cylinder periphery.
2. a kind of novel oil gas damper according to claim 1, it is characterized in that, the lower chambers of described piston cylinder is connected with the lower chambers of oil hydraulic cylinder with one-way valve a by damping hole a.
3. a kind of novel oil gas damper according to claims 1 or 2, it is characterized in that, described floating piston A moves up and down to impel between the lower chambers of piston cylinder and the lower chambers of oil hydraulic cylinder and fluid flowing occurs, produce damping force when flowing through damping hole a and one-way valve a, floating piston B is also moved up and down thereupon.
4. a kind of novel oil gas damper according to claim 1, it is characterized in that, described oil hydraulic cylinder upper chamber is full of hydraulic oil, and described oil hydraulic cylinder lower chambers is full of hydraulic oil.
5. a kind of novel oil gas damper according to claim 4, it is characterized in that, described oil hydraulic cylinder upper chamber is connected with oil hydraulic cylinder lower chambers with damping hole c by damping hole b, fluid is flowed between oil hydraulic cylinder upper chamber and oil hydraulic cylinder lower chambers by damping hole b and damping hole c, produces damping force.
6. a kind of novel oil gas damper according to claim 4, it is characterized in that, described oil hydraulic cylinder upper chamber is connected with oil hydraulic cylinder lower chambers with one-way valve c by one-way valve b, fluid is flowed between oil hydraulic cylinder upper chamber and oil hydraulic cylinder lower chambers by one-way valve b and one-way valve c, produces damping force.
7. a kind of novel oil gas damper according to claim 1, it is characterized in that, described oil hydraulic cylinder upper chamber is full of inert nitrogen gas, and described oil hydraulic cylinder lower chambers is full of hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674208.6A CN105134855A (en) | 2015-10-16 | 2015-10-16 | Novel oil-gas damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674208.6A CN105134855A (en) | 2015-10-16 | 2015-10-16 | Novel oil-gas damper |
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| CN105134855A true CN105134855A (en) | 2015-12-09 |
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| CN201510674208.6A Pending CN105134855A (en) | 2015-10-16 | 2015-10-16 | Novel oil-gas damper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443636A (en) * | 2015-12-24 | 2016-03-30 | 华侨大学 | Mixed communication type oil-gas shock attenuation device |
| CN105485233A (en) * | 2015-12-24 | 2016-04-13 | 华侨大学 | Oil-gas damper |
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | Artificial limb |
| CN110748592A (en) * | 2019-11-12 | 2020-02-04 | 山东理工大学 | Three-air-chamber single-damping hydro-pneumatic spring device |
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| CN2811665Y (en) * | 2005-05-26 | 2006-08-30 | 江苏大学 | Single-chamber oil-gas separation type oil-gas spring with nonlinear characteristics |
| CN1836205A (en) * | 2003-08-12 | 2006-09-20 | 格雷姆·K·罗伯逊 | Shock absorber assembly |
| CN101639106A (en) * | 2009-08-25 | 2010-02-03 | 深圳市中车业成实业有限公司 | Piston-type hydro-pneumatic buffer |
| 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 |
| CN205136452U (en) * | 2015-10-16 | 2016-04-06 | 厦门铠睿智能科技有限公司 | Novel oil gas attenuator |
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2015
- 2015-10-16 CN CN201510674208.6A patent/CN105134855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836205A (en) * | 2003-08-12 | 2006-09-20 | 格雷姆·K·罗伯逊 | Shock absorber assembly |
| CN2811665Y (en) * | 2005-05-26 | 2006-08-30 | 江苏大学 | Single-chamber oil-gas separation type oil-gas spring with nonlinear characteristics |
| CN101639106A (en) * | 2009-08-25 | 2010-02-03 | 深圳市中车业成实业有限公司 | Piston-type hydro-pneumatic buffer |
| 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 |
| CN205136452U (en) * | 2015-10-16 | 2016-04-06 | 厦门铠睿智能科技有限公司 | Novel oil gas attenuator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443636A (en) * | 2015-12-24 | 2016-03-30 | 华侨大学 | Mixed communication type oil-gas shock attenuation device |
| CN105485233A (en) * | 2015-12-24 | 2016-04-13 | 华侨大学 | Oil-gas damper |
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | Artificial limb |
| CN107007381B (en) * | 2017-04-14 | 2018-11-20 | 东阳市东狮卫浴有限公司 | Artificial limb |
| CN110748592A (en) * | 2019-11-12 | 2020-02-04 | 山东理工大学 | Three-air-chamber single-damping hydro-pneumatic spring device |
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Application publication date: 20151209 |