CN203297461U - Hydro-pneumatic spring with variable parameters - Google Patents
Hydro-pneumatic spring with variable parameters Download PDFInfo
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- CN203297461U CN203297461U CN2013201671292U CN201320167129U CN203297461U CN 203297461 U CN203297461 U CN 203297461U CN 2013201671292 U CN2013201671292 U CN 2013201671292U CN 201320167129 U CN201320167129 U CN 201320167129U CN 203297461 U CN203297461 U CN 203297461U
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Abstract
Provided is a hydro-pneumatic spring with variable parameters. The hydro-pneumatic spring with the variable parameters comprises a hydraulic cylinder and an energy accumulator, wherein the interior of the hydraulic cylinder is divided into a rod liquid cavity and a rodless liquid cavity through a piston, the rod liquid cavity and the rodless liquid cavity are communicated through damping holes in the piston, the interior of the energy accumulator is divided into a gas cavity and a liquid cavity through an elastic diaphragm, and the rod liquid cavity and the rodless liquid cavity of the hydraulic cylinder are communicated with the liquid cavity in the energy accumulator through a pipeline, flow area regulating valves and other valves. The hydro-pneumatic spring with the variable parameters further comprises an additional gas chamber communicated with the gas cavity in the energy accumulator, the gas flow area of the additional gas chamber can be adjusted, inflation and deflation can be achieved through a gas hole in the additional gas chamber or the energy accumulator, and accordingly the rigidity, the damping and the height of the hydro-pneumatic spring can be adjusted. The hydro-pneumatic spring with the variable parameters is simple in structure, low in manufacturing difficulty and flexible to arrange when installed.
Description
Technical field
The utility model relates to a kind of carrying vibration damping components and parts, and particularly a kind of variable element hydro-pneumatic spring, can play the effect of spring and damper for suspending of vehicle body or operator cabin etc., its rigidity, damping and highly all can regulate.
Background technique
Hydro-pneumatic spring is the core component of hydro pneumatic suspension, be to utilize the compression of gas to carry out the elastic element of stored energy, is that development is out on the basis of diaphragm typeair spring.Its adopts canister as air chamber, usings the nitrogen of inertia as elastic element, and fluid is arranged as intermediate medium between piston and gas.Hydro-pneumatic spring is divided into integral type and split type according to the position of the relative oil hydraulic cylinder of accumulator, according to gas-liquid in accumulator, whether separate and be divided into not separated type and with the separated oil-gas separated-type of a flexible sheet of oil gas, according to the accumulator form, be divided into single air chamber, two air chamber, two stage atmospheric pressure formula.Single chamber hydragas spring only has an air chamber, piston is reciprocating in oil hydraulic cylinder, thereby cause gas compression or expansion in air chamber, hydraulic oil inflow and outflow in each chamber, the damping function that the elastic force that the gas distortion produces and fluid produce has realized respectively elasticity and the damping function of hydro-pneumatic spring.Double chamber hydragas spring is the hydro-pneumatic spring that the back pressure air chamber is arranged, and than the many back-pressure air chambers of single chamber hydragas spring, this air chamber also claims the back pressure chamber.Characteristics have been that the air chamber of elastic buffer effect is comprised of two air chambers of positive and negative pressure, when hydro-pneumatic spring is in compression stroke, main piston inwardly moves, and fluid flows into accumulator, and the indoor gas of positive pressure gas is compressed, meanwhile the volume of annular chamber increases, the volume of back-pressure air chamber is also along with increase, and air pressure is corresponding to be reduced, namely during compression stroke, positive pressure chamber gas pressure increases, and back pressure chamber gas pressure reduces; Vice versa, and while namely reducing stroke, positive pressure chamber gas pressure reduces, and back pressure chamber gas pressure increases.Two-stage pressure type hydro-pneumatic spring also has two air chambers, and one is low-pressure chamber, and another is plenum chamber, and two air chambers are not communicated with, when piston stroke is little, and the oil liquid pressure in each chamber of oil hydraulic cylinder little (being low pressure stage), only low-pressure chamber's work this moment.When piston stroke increased, the oil pressure of hydraulic pressure cavity increased (high pressure phase), at this moment low-pressure chamber and plenum chamber co-operation.
Because the automobile that hydro pneumatic suspension is installed can guarantee clearance, with the variation of load, do not change, the vibration frequency under different loads is constant and can reduce the characteristics such as pitch vibration and roll vibration to a certain extent.Exploitation and research work that hydro-pneumatic spring is relevant more and more come into one's own.
ZL201110314016.6 discloses and a kind ofly can realize all adjustable hydro-pneumatic springs of damping and rigidity, and can change the height of vehicle body, but due to pressurized gas and floating piston being arranged in its clutch release slave cylinder, certainly will cause its required setting height(from bottom) much bigger, and this cause practical application on vehicle; Fluid directly contacts at two places with pressurized gas, has increased the possibility of oil emulsifying; Cavity is more, complex structure; The scope that damping is regulated is also limited.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, a kind of damping that mainly is comprised of 3 cylinder bodies, rigidity and highly equal controllable hydro-pneumatic springs are provided, its mounting arrangements in suspension is more flexible, the Novel oil gas spring of oil emulsifying phenomenon can not occur again, and damp adjustable range is larger.
In order to achieve the above object, the utility model adopts following technological scheme:
Variable element hydro-pneumatic spring of the present utility model, comprise oil hydraulic cylinder, accumulator, it is characterized in that oil hydraulic cylinder inside is divided into and the bar liquid container is arranged and without the bar liquid container by piston, and these two cavitys are connected by the damping hole on piston, accumulator inside is divided into air chamber and liquid container by elastic diaphragm, and in oil hydraulic cylinder, two liquid container are communicated with liquid container in accumulator by pipeline and valve respectively, also comprises an auxiliary chamber that is connected with air chamber in accumulator by pipeline and valve.
The volume of described auxiliary chamber is not more than 2 times of air chamber maximum volume in accumulator.
Described auxiliary chamber is cylinder or spherical.
Gas in described auxiliary chamber and accumulator air chamber is inert gas, as nitrogen.
Described auxiliary chamber or accumulator air chamber wall are provided with a pore, can connect air inflation discharging control device and realize filling, exitting.
Described cylinder wall is provided with an oilhole, can supplement hydraulic oil by this oilhole.
In described oil hydraulic cylinder, without the valve that arranges in bar liquid container and accumulator path, comprise an one-way valve and a circulation area modulating valve, one-way valve is only opened when without the bar liquid container, flowing into accumulator at fluid, and it is a circulation area modulating valve that the valve that arranges in bar liquid container and accumulator path is arranged.
The valve that arranges in described auxiliary chamber and accumulator path is a circulation area modulating valve.
The beneficial effects of the utility model are:
1. adopt accumulator with oil hydraulic cylinder, auxiliary chamber, to be connected respectively by pipeline, reduced required height is installed, increased flexibility and the Applicable scope of arranging.
2. the employing diaphragm accumulator, prevented the emulsification of fluid.
3. increased auxiliary chamber, strengthened the volume of pressurized gas, can further reduce the rigidity of spring, and along with the path size adjustment, rigidity can be adjustable continuously within the specific limits, and supervene certain air damping, is more conducive to attenuation vibration.
4. by inflation/deflation, regulate vehicle body height and soil rigidity.
5. the size by fluid path between valve regulated oil hydraulic cylinder and accumulator liquid container realizes the damping size adjustment.
The accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present utility model.
In accompanying drawing: 1, oil hydraulic cylinder, 2, piston, 3, control valve, 4, oil pipe, 5, control valve, 6, one-way valve, 7, accumulator, 8, pore, 9, tracheae, 10, control valve, 11, auxiliary chamber, 12, oilhole.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model is by oil hydraulic cylinder 1, piston 2, control valve 3, oil pipe 4, control valve 5, one-way valve 6, accumulator 7, pore 8, tracheae 9, control valve 10, the compositions such as auxiliary chamber 11 and oilhole 12.Oil hydraulic cylinder inside is divided into without bar liquid container A and bar liquid container B is arranged by piston, and these two cavitys are connected by the damping hole on piston.Accumulator inside is divided into air chamber C and liquid container D by elastic diaphragm.In oil hydraulic cylinder, in A chamber and accumulator D chamber path, one-way valve 6 and circulation area modulating valve 5 are set, 6, one-way valve is opened when fluid flows into the D chamber from the A chamber, the size of path when circulation area modulating valve 5 flows into the D chamber be used to changing fluid from the A chamber.In oil hydraulic cylinder, in B chamber and accumulator D chamber circulation pipeline, circulation area modulating valve 3 is set, the size of path while mutually circulating for controlling B chamber and D chamber fluid.In accumulator C chamber and auxiliary chamber connecting pipeline, circulation area modulating valve 10 is set, the size of path while mutually circulating for controlling C chamber and auxiliary chamber gas.Auxiliary chamber or accumulator air chamber wall are provided with pore 8, can connect air inflation discharging control device and realize filling, exitting.Cylinder wall is provided with oilhole 12, can supplement hydraulic oil by this oilhole.
Working principle of the present utility model is as follows:
The piston of hydro-pneumatic spring shown in Figure 12 lower ends are connected with vehicle bridge, oil hydraulic cylinder 1 connects with vehicle body, be fixed to chassis or vehicle body somewhere accumulator 7 and auxiliary chamber 11 visible seam contact pins, vehicle is under the excitation of uneven road surface, vehicle frame and vehicle bridge produce relative movement, and the cylinder barrel of the relative oil hydraulic cylinder of piston is reciprocating.in Vehicle Driving Cycle, when projection on cartwheel roll or while rolling out pit, vehicle bridge is near vehicle frame, suspension is in compression stroke, the fluid in A chamber is compressed, force fluid to move to two orientation: the one, along with the increase of oil liquid pressure, flow through one-way valve 6 of fluid enters accumulator D chamber with circulation area modulating valve 5, gas volume in further compress energy storage device C chamber and auxiliary chamber 11, the aperture size of at this moment regulating circulation area modulating valve 10 can change the compressed complexity of gas, namely be presented as the variation that rigidity is wider, gas flow is crossed circulation area modulating valve 10 and is subject to certain resistance simultaneously, namely be presented as and produced certain damping, the 2nd, along with the motion of piston, the volume in B chamber increases, and fluid flows into the B chamber through the damping hole on piston 2, simultaneously the flow through liquid of one-way valve 6 of part flows into the B chambeies by circulation area modulating valve 3, until each cavity pressure balance.Because making 1 chamber simultaneously, damping hole and circulation area modulating valve 3 on one-way valve 6, piston 2 be communicated with 2 chambeies in this course, the flow velocity of fluid is lower, the fluid damping force that produces is smaller, mainly by the gas in accumulator 7 and auxiliary chamber 11, is compressed and is produced the motion that elastic reaction suppresses piston 2.
When the cartwheel roll lower convexity or while rolling into pit, vehicle bridge is away from vehicle frame, and suspension is in the recovery stroke, and the oil liquid pressure in A chamber reduces, and the fluid in B chamber flows to the A chamber by damping hole, and this moment, one-way valve 6 was in closed condition.Along with the motion of piston 2, the volume that the volume that the A chamber increases reduces greater than the B chamber, at this moment the part fluid in accumulator 7D chamber flows into the B chamber under gas pressure effect by compression, until each cavity pressure balance.Because one-way valve 6 is in closed condition in restoring stroke, so fluid only has through damping hole on piston 2 and circulation area modulating valve 3 and flows, and flow velocity is higher, certainly leads to larger damping force, thereby has suppressed the motion of piston 2, and attenuation vibration rapidly.
Have the fluid of pressure reduction and gas while flowing through damping hole and circulation area modulating valve, producing the Conversion of Energy that damping consumes is heat, oil liquid temperature is increased, and then be dissipated in environment and go by oil hydraulic cylinder outer wall, pipeline outer wall and accumulator outer wall etc.
From principle analysis, can find out: hydro pneumatic suspension is compression stroke, the damping force that oil hydraulic cylinder produces is smaller, give full play to the elastic reaction of gas in accumulator 7 and auxiliary chamber 11, be equivalent to the spring action of traditional suspension, and with the aperture size variation of circulation area modulating valve 10, the rigidity of spring changes in a wider context, the natural frequency of vibration of reduction or keeping system, simultaneously with certain air damping effect, the decay that can accelerate to vibrate; And in restoring stroke, the damping force of generation is larger, so that attenuation vibration rapidly, this process is equivalent to the damper effect of traditional suspension.
Because the C chamber of auxiliary chamber 11 and accumulator 7 is communicated with, therefore can by the pore 8 on auxiliary chamber 11 or accumulator 7, be filled with or discharge nitrogen and change the height adjusting that gas gross is realized spring, realize the adjusting of vehicle body vehicle body height when the operating modes such as different loads and different road surfaces are travelled, strengthen passing ability and the run smoothness of automobile, also can realize the adjusting of hydro-pneumatic spring soil rigidity simultaneously.
Oil hydraulic cylinder 1 wall is provided with oilhole 12, can supplement hydraulic oil by this oilhole, equally also can regulate thus the soil rigidity of hydro-pneumatic spring.
Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model is limited; in the protection domain of spirit of the present utility model and claim; all the utility model is taked to be equal to replace or technological scheme that equivalent transformation obtains, all fall into protection domain of the present utility model.
Claims (8)
1. variable element hydro-pneumatic spring, comprise oil hydraulic cylinder, accumulator, it is characterized in that oil hydraulic cylinder inside is divided into and the bar liquid container is arranged and without the bar liquid container by piston, and these two cavitys are connected by the damping hole on piston, accumulator inside is divided into air chamber and liquid container by elastic diaphragm, and in oil hydraulic cylinder, two liquid container are communicated with liquid container in accumulator by pipeline and valve respectively, also comprises an auxiliary chamber that is connected with air chamber in accumulator by pipeline and valve.
2. variable element hydro-pneumatic spring according to claim 1, the volume that it is characterized in that auxiliary chamber are not more than 2 times of air chamber maximum volume in accumulator.
3. variable element hydro-pneumatic spring according to claim 1, is characterized in that auxiliary chamber is cylinder or spherical.
4. variable element hydro-pneumatic spring according to claim 1, is characterized in that the gas in auxiliary chamber and accumulator air chamber is inert gas, as nitrogen.
5. variable element hydro-pneumatic spring according to claim 1, is characterized in that auxiliary chamber or accumulator air chamber wall are provided with a pore, can connect air inflation discharging control device and realize filling, exitting.
6. variable element hydro-pneumatic spring according to claim 1, is characterized in that cylinder wall is provided with an oilhole, can supplement hydraulic oil by this oilhole.
7. variable element hydro-pneumatic spring according to claim 1, it is characterized in that without the valve that arranges in bar liquid container and accumulator path, comprising an one-way valve and a circulation area modulating valve in oil hydraulic cylinder, one-way valve is only opened when without the bar liquid container, flowing into accumulator at fluid, and it is a circulation area modulating valve that the valve that arranges in bar liquid container and accumulator path is arranged.
8. variable element hydro-pneumatic spring according to claim 1, is characterized in that the valve that arranges in auxiliary chamber and accumulator path is a circulation area modulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201671292U CN203297461U (en) | 2013-04-07 | 2013-04-07 | Hydro-pneumatic spring with variable parameters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201671292U CN203297461U (en) | 2013-04-07 | 2013-04-07 | Hydro-pneumatic spring with variable parameters |
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| CN203297461U true CN203297461U (en) | 2013-11-20 |
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| CN2013201671292U Expired - Fee Related CN203297461U (en) | 2013-04-07 | 2013-04-07 | Hydro-pneumatic spring with variable parameters |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195856A (en) * | 2013-04-07 | 2013-07-10 | 南京农业大学 | Parameter variable hydro-pneumatic spring |
| CN105134864A (en) * | 2015-09-30 | 2015-12-09 | 郑州比克新能源汽车有限公司 | Electromagnetic lining of electromobile |
| CN105221632B (en) * | 2015-09-30 | 2017-05-31 | 中国人民解放军装甲兵工程学院 | One kind damping continuously adjustabe hydro pneumatic suspension |
| CN107091318A (en) * | 2017-05-05 | 2017-08-25 | 苏州苏净船用机械有限公司 | A kind of oil expansion tank component for being applicable different water depth |
| CN107709822A (en) * | 2015-03-15 | 2018-02-16 | 福尔摩斯解决方案合伙有限公司 | Energy delivery devices and application method |
| CN110980299A (en) * | 2020-03-03 | 2020-04-10 | 山东炎黄工业设计有限公司 | Glass conveying device for building and using method thereof |
| CN113883204A (en) * | 2021-10-22 | 2022-01-04 | 山东交通学院 | Piston type air spring damping system with variable rigidity |
| CN114354159A (en) * | 2021-12-23 | 2022-04-15 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic passive hydraulic loading life test system of adjusting |
-
2013
- 2013-04-07 CN CN2013201671292U patent/CN203297461U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195856A (en) * | 2013-04-07 | 2013-07-10 | 南京农业大学 | Parameter variable hydro-pneumatic spring |
| CN107709822A (en) * | 2015-03-15 | 2018-02-16 | 福尔摩斯解决方案合伙有限公司 | Energy delivery devices and application method |
| CN105134864A (en) * | 2015-09-30 | 2015-12-09 | 郑州比克新能源汽车有限公司 | Electromagnetic lining of electromobile |
| CN105221632B (en) * | 2015-09-30 | 2017-05-31 | 中国人民解放军装甲兵工程学院 | One kind damping continuously adjustabe hydro pneumatic suspension |
| CN107091318A (en) * | 2017-05-05 | 2017-08-25 | 苏州苏净船用机械有限公司 | A kind of oil expansion tank component for being applicable different water depth |
| CN110980299A (en) * | 2020-03-03 | 2020-04-10 | 山东炎黄工业设计有限公司 | Glass conveying device for building and using method thereof |
| CN113883204A (en) * | 2021-10-22 | 2022-01-04 | 山东交通学院 | Piston type air spring damping system with variable rigidity |
| CN113883204B (en) * | 2021-10-22 | 2023-05-02 | 山东交通学院 | Piston type air spring shock absorption system with variable rigidity |
| CN114354159A (en) * | 2021-12-23 | 2022-04-15 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic passive hydraulic loading life test system of adjusting |
| CN114354159B (en) * | 2021-12-23 | 2024-03-29 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic passive hydraulic loading life test system of regulation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140407 |