CN202914613U - Double air bag type stiffness infinite adjustable hydro-pneumatic spring - Google Patents
Double air bag type stiffness infinite adjustable hydro-pneumatic spring Download PDFInfo
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- CN202914613U CN202914613U CN 201220544191 CN201220544191U CN202914613U CN 202914613 U CN202914613 U CN 202914613U CN 201220544191 CN201220544191 CN 201220544191 CN 201220544191 U CN201220544191 U CN 201220544191U CN 202914613 U CN202914613 U CN 202914613U
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Abstract
The utility model relates to a double air bag type stiffness infinite adjustable hydro-pneumatic spring which comprises a main working cylinder, an oil pipe and a subsidiary oil cylinder, wherein the oil pipe is connected at the upper end of the main working cylinder. The subsidiary oil cylinder is connected with the other end of the oil pipe and comprises a subsidiary cylinder, a damper valve assembly, two air bags, two air bag seats, a separating plate, a connecting pipeline, a solenoid valve, a pump oil pipe line, an oil returning pipeline, an oil pump, an oil tank and a ventilation hole, wherein the subsidiary cylinder is connected with the oil pipe, the damper valve assembly is arranged in the subsidiary cylinder, the two air bags and the two air bag seats are symmetrically arranged at one side of the damper valve assembly, the separating plate is arranged between the two air bags, the connecting pipeline is arranged at the other end of the subsidiary cylinder, the solenoid valve is arranged on the connecting pipeline, the pump oil pipeline and the oil returning pipe line are connected with the solenoid valve, the oil pump is arranged on the pump oil pipeline, the oil tank is connected with the pump oil pipeline and the oil returning pipeline, and the ventilation hole is formed in the separating plate. The stiffness characteristic of the double air bag type stiffness infinite adjustable hydro-pneumatic spring is broadened from a non-linear curve into a range of variation which can freely be valued, thus the problem that the requirement 'contradiction' among safety and comfort and suspension system stiffness in the process of running of an automobile can be solved, and adaptive capacity of various running conditions of the whole automobile is improved.
Description
Technical field
The present invention relates to a kind of hydro-pneumatic spring for vehicle suspension system, specifically a kind of pair of stepless adjustable hydro-pneumatic spring of air sac type rigidity
Background technique
Vehicle can change with the variation of the driving conditions such as load, condition of road surface the demand of suspension system rigidity, damping.When driving conditions changes, if can not be corresponding rigidity, the damping of adjustable suspension system just be difficult to reach gratifying effectiveness in vibration suppression, will have a strong impact on vehicle riding comfort.
At present, ride control shock absorber has had a variety of schemes to realize, and is also increasingly mature based on the semi-active suspension technology of ride control shock absorber.But the adjusting for suspension system rigidity but seldom has effective method.Adopt the non-linear rigidity elastic elements such as variable pitch spring or hydro-pneumatic spring, can improve to a certain extent the travelling comfort of vehicle, but the stiffness characteristics of these elastic elements is still a fixing curve, can't realize the stepless adjustable of suspension system rigidity.
Hydro-pneumatic spring has the advantages that rigidity becomes with load: its rigidity is lower when unloaded, and along with the increase of load, rigidity constantly increases, and its rigidity value of full load might become excessive, is not the best rigidity value of system under its operating mode of living in.The desirable rigidity of suspension system is except depending on load, and is also relevant with the pavement behavior of Vehicle Driving Cycle: when good road surface is travelled, wish suspension " soft " some, to improve the travelling comfort of car load; When travel in abominable road surface, wish suspension " firmly " some, with the raising driving safety.
Compare with common helical spring rigidity of fixation, the non-linear rigidity of hydro-pneumatic spring has made vehicle performance obtain to a certain degree improvement.But vehicle driving conditions complicated and changeable is not to be limited on the fixing nonlinear curve to the rigidity requirement of suspension system, but wishes in the plane the large excursion of trying one's best is arranged at whole rigidity-displacement two-dimensional coordinate system.The invention provides a kind of organization plan of hydro-pneumatic spring, can realize the step-less adjustment of stiffness characteristics, make suspension system under various driving conditions, all have good effectiveness in vibration suppression.
Summary of the invention
The objective of the invention is to provide a kind of pair of air sac type rigidity infinitely variable hydro-pneumatic spring organization plan, the stiffness characteristics that makes hydro-pneumatic spring by a nonlinear curve be extended to one can free value excursion, to solve vehicle safety and travelling comfort to the demand " contradiction " of suspension system rigidity, improve car load to the adaptive capacity of various driving cycles.
The object of the present invention is achieved like this, this hydro-pneumatic spring comprises Main cylinder, be connected to the oil pipe of Main cylinder upper end, be connected to the subtask cylinder of the oil pipe the other end, it is characterized in that: described subtask cylinder comprises the secondary cylinder barrel of a connected pipes, be arranged on the orifice valve assembly in the secondary cylinder barrel, be arranged on symmetrically arranged two air bags of orifice valve assembly one side and two air bag seats, be arranged on two dividing plates between the air bag, be arranged on the connecting pipeline of the secondary cylinder barrel the other end, be arranged on the solenoid valve on the connecting pipeline, pump oil pipe line and the return line of connected electromagnetic valve, be arranged on the oil pump on the pump oil pipe line, connect the fuel tank of pump oil pipe line and return line, a vent is set on the described dividing plate.
Described orifice valve assembly comprises valve body, be arranged on damping hole on the valve body, be fixed on valve block on the valve body, be arranged on the second packing ring and air bag baffle plate between valve block and the bolt by screw bolt and nut, damping hole on the valve body has 6～8, rounded array distribution, wherein a part of damping hole is blocked by valve block, hydro-pneumatic spring passes through different damping holes in compression stroke from the recovery stroke, thereby can produce the damping forces of different sizes.
Also can adopt the structural type with solenoid valve on the described vent.
The present invention has the following advantages and good effect:
1. hydro-pneumatic spring of the present invention is comprised of two clutch release slave cylinders, and the Main cylinder two ends link to each other with unsprung weight with vehicle body respectively, is the vitals that bears the active force between vehicle body and the unsprung weight; The subtask cylinder is fixed on the vehicle body, is the vitals of hydro-pneumatic spring performance elastic reaction, damping function and adjusting rigidity.The gaseous mass of performance elastic reaction is continually varying in the subtask cylinder air bag of the present invention, but the rigidity step-less adjustment of hydro-pneumatic spring.
2. the aperture on the piston of the present invention can make low velocity gas pass through smoothly, then can produce very large inhibition to high-speed gas.When regulating the rigidity of hydro-pneumatic spring, pump oil or the speed of draining the oil are lower, and gas by aperture, can guarantee carrying out smoothly of stiffness tuning with very low speed.During wheel hop, the stretching of hydro-pneumatic spring or compression movement are very fast, and gas by aperture, can produce very large inhibition with very high speed, thereby quality that can guarantee effect gas is substantially constant, and the load-deflection curve of hydro-pneumatic spring can change.
After the stiffness tuning of 3 hydro-pneumatic springs of the present invention is complete, close the solenoid valve that is arranged on the oil pipe, can guarantee the constancy of volume of air chamber A, B.
4. the present invention will act on air bag and the gas storage air bag all is enclosed in the subtask cylinder, and subtask cylinder two ends link to each other with Main cylinder, oil pumping system respectively by oil pipe, and are better to the sealing effect that oil is gentle.
5. driver of the present invention can regulate the rigidity of hydro-pneumatic spring according to load state, road surface situation and the driving of self sensation of vehicle.Also can process by control unit by the travelling state parameter of sensor test car load, send the rigidity of instruction control hydro-pneumatic spring.
Description of drawings
Fig. 1 is the two stepless adjustable hydro-pneumatic spring structural representations of air sac type rigidity of the present invention.
Fig. 2 is the another kind of mode of execution structural representation of the stepless adjustable hydro-pneumatic spring of the two air sac type rigidity of the present invention.
Stiffness tuning change curve when Fig. 3 is the stiffness tuning scope of the two air sac type hydro-pneumatic springs of the present invention and different loads.
Embodiment
As shown in Figure 1, the stepless adjustable hydro-pneumatic spring of this rigidity comprises: the Main cylinder that is made of hanger 1, main piston rod 2, the first seal ring 3, guide pin bushing 4, the second seal ring 5, guider 6, main piston 7, master cylinder cylinder 8, the first packing ring 9 and opening 10, be connected to the oil pipe 11 of Main cylinder upper end, be connected to the subtask cylinder of oil pipe 11 the other ends.Described the first seal ring 3 and guide pin bushing 4 are arranged between main piston rod 2 and the guider 6, and the second seal ring 5 and the first packing ring 9 are arranged between guider 6 and the master cylinder cylinder 8, and opening 10 is arranged on the main piston 7.
Described orifice valve assembly comprises valve body 13, be arranged on damping hole 14 on the valve body 13, be fixed on valve block 12 on the valve body 13, be arranged on the second packing ring 17 and air bag baffle plate 16 between valve block 12 and the bolt 15 by bolt 15 and nut 18, wherein the gap between air bag baffle plate 16 and the secondary cylinder barrel 31 is about 1 ~ 2mm, can guarantee passing through smoothly of fluid.There is certain fillet at described air bag baffle plate 16 two ends, punctured because localized stress is excessive when preventing that air bag is in contact with it, damping hole 14 on the valve body 13 has 6 ~ 8, rounded array distribution, wherein a part of damping hole is blocked by valve block 12, hydro-pneumatic spring passes through different damping holes in compression stroke from the recovery stroke, thereby can produce the damping forces of different sizes.
The present invention consists of two air chamber A by two air bags, B, described subtask cylinder comprises the secondary cylinder barrel 22 of a connected pipes 11, be arranged on the orifice valve assembly in the secondary cylinder barrel 22, be arranged on two symmetrically arranged air bags 19 of orifice valve assembly one side, 19-1 and air bag seat 20,20-1, be arranged on two air bags 19, dividing plate 21 between the 19-1, be arranged on the connecting pipeline 23 of secondary cylinder barrel 22 the other ends, the solenoid valve 24 that connects connecting pipeline 23, the pump oil pipe line 28 of connected electromagnetic valve 24 and return line 25, be arranged on the oil pump 27 on the pump oil pipe line 28, the fuel tank 26 that connects pump oil pipe line 28 and return line 25 arranges a vent 29 or with the controlled solenoid valve 30(of break-make as shown in Figure 4 on the described dividing plate 21).
Working principle is: air bag 19, air bag 19-1 and secondary cylinder barrel 22, dividing plate 21 surrounds two air chamber A jointly, B, gas performance elastic reaction among the A of chamber, gas is used for regulating the gas content of chamber A among the B of chamber, separate with dividing plate 21 between two air chamber, have the vent 29 that supplied gas is slowly passed through on the dividing plate 21, when oil-way system (by connecting pipeline 23, solenoid valve 24, pump oil pipe line 28, return line 25, oil pump 27 and fuel tank 26 consists of) when draining the oil outward to secondary cylinder barrel 22 internal pumps oil or secondary cylinder barrel 22, the gaseous mass of performance elastic reaction will change among the A of chamber, and then makes the stiffness change of hydro-pneumatic spring.
Shown in accompanying drawing 2: this scheme is to change the pore 29 of often opening on the dividing plate 21 into a solenoid valve 30 that break-make is controlled, when solenoid valve 30 cuts out, air bag A, B can be cut off fully.
Described connecting pipeline 23 is can be to secondary cylinder barrel 22 oil-filled or drain the oil, thereby changes the quality of the gas of performance elastic reaction in the air bag 19, and then adjusts the rigidity of hydro-pneumatic spring.Oil-way system is made of connecting pipeline 23, solenoid valve 24, pump oil pipe line 28, return line 25, oil pump 27 and fuel tank 26, solenoid valve 24 can control to secondary cylinder barrel 22 oil-filled, drain the oil or locking, the oil mass that pumps into or emit secondary cylinder barrel 22 is continually varying, thereby can realize the stepless adjustable of hydro-pneumatic spring rigidity.
Shown in Figure 3 is the change curve of its stiffness characteristics when hydro-pneumatic spring is carried out stiffness tuning.For common hydro-pneumatic spring, the quality of gas immobilizes in the accumulator, and its stiffness characteristics is a fixing nonlinear curve.Because the load state of vehicle, track, driver's the driving conditions such as driving habits are complicated and changeable, car load is not to be limited on the nonlinear curve to the rigidity requirement of suspension system, but wishes in the plane the large excursion of trying one's best is arranged at whole rigidity-displacement two-dimensional coordinate system.The stepless adjustable hydro-pneumatic spring of rigidity provided by the present invention is extended to excursion shown in the figure with the hydro-pneumatic spring stiffness characteristics by a nonlinear curve exactly.
Claims (3)
1. two stepless adjustable hydro-pneumatic spring of air sac type rigidity, this hydro-pneumatic spring comprises Main cylinder, be connected to the oil pipe of Main cylinder upper end, be connected to the subtask cylinder of the oil pipe the other end, it is characterized in that: described subtask cylinder comprises the secondary cylinder barrel of a connected pipes, be arranged on the orifice valve assembly in the secondary cylinder barrel, be arranged on symmetrically arranged two air bags of orifice valve assembly one side and two air bag seats, be arranged on two dividing plates between the air bag, be arranged on the connecting pipeline of the secondary cylinder barrel the other end, be arranged on the solenoid valve on the connecting pipeline, pump oil pipe line and the return line of connected electromagnetic valve, be arranged on the oil pump on the pump oil pipe line, connect the fuel tank of pump oil pipe line and return line, a vent is set on the described dividing plate.
2. the stepless adjustable hydro-pneumatic spring of a kind of pair of air sac type rigidity according to claim 1, it is characterized in that: described orifice valve assembly comprises valve body, be arranged on damping hole on the valve body, be fixed on valve block on the valve body, be arranged on the second packing ring and air bag baffle plate between valve block and the bolt by screw bolt and nut, damping hole on the valve body has 6～8, rounded array distribution, wherein a part of damping hole is blocked by valve block, hydro-pneumatic spring passes through different damping holes in compression stroke from the recovery stroke, thereby can produce the damping forces of different sizes.
3. the stepless adjustable hydro-pneumatic spring of a kind of pair of air sac type rigidity according to claim 1 is characterized in that: adopt the structural type with solenoid valve on the described vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544191 CN202914613U (en) | 2012-10-23 | 2012-10-23 | Double air bag type stiffness infinite adjustable hydro-pneumatic spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544191 CN202914613U (en) | 2012-10-23 | 2012-10-23 | Double air bag type stiffness infinite adjustable hydro-pneumatic spring |
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| Publication Number | Publication Date |
|---|---|
| CN202914613U true CN202914613U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220544191 Withdrawn - After Issue CN202914613U (en) | 2012-10-23 | 2012-10-23 | Double air bag type stiffness infinite adjustable hydro-pneumatic spring |
Country Status (1)
| Country | Link |
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| CN (1) | CN202914613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775554A (en) * | 2012-10-23 | 2014-05-07 | 长春孔辉汽车科技有限公司 | Double-air-bag rigidity stepless adjustable oil-gas spring |
-
2012
- 2012-10-23 CN CN 201220544191 patent/CN202914613U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775554A (en) * | 2012-10-23 | 2014-05-07 | 长春孔辉汽车科技有限公司 | Double-air-bag rigidity stepless adjustable oil-gas spring |
| CN103775554B (en) * | 2012-10-23 | 2015-12-23 | 长春孔辉汽车科技股份有限公司 | The stepless adjustable hydro-pneumatic spring of double bolloon formula rigidity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGCHUN KONGHUI AUTOMATIVE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 130012 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Patentee after: Changchun Konghui Automative Technology Co., Ltd. Address before: 130012 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Patentee before: KH Automotive Technologies (Changchun) Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |