CN102401074A - Air spring for adjusting dynamic stiffness along with displacement of air bag - Google Patents
Air spring for adjusting dynamic stiffness along with displacement of air bag Download PDFInfo
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- CN102401074A CN102401074A CN2011101681923A CN201110168192A CN102401074A CN 102401074 A CN102401074 A CN 102401074A CN 2011101681923 A CN2011101681923 A CN 2011101681923A CN 201110168192 A CN201110168192 A CN 201110168192A CN 102401074 A CN102401074 A CN 102401074A
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- air
- space
- air bag
- spring
- push rod
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Abstract
The invention discloses an air spring for adjusting the dynamic stiffness along with the displacement of an air bag. The air spring is formed by combining an air bag 1, an upper installation plate 2, an auxiliary air chamber 3, a movable cover 4, springs 5, a push rod 6 and a lower installation plate 7, and is structurally characterized in that: the push rod 6 is fixed at the central position of the inner plane of the upper installation plate 2; the auxiliary air chamber 3 is fixed at the central position of the inner plane of the lower installation plate 7; the movable cover 4 of which the inner diameter is dynamically matched with the outer diameter of the auxiliary air chamber 3 is sleeved outside the auxiliary air chamber 3; the top of the auxiliary air chamber 3 and a cavity of an upper cover of the movable cover 4 are provided with springs 5; and the movable cover 4 is always in contact with the push rod 6 and moves up and down along with the push rod 6 under the action of the springs 5. When the dynamic load of a vehicle is increased during movement, the movable cover 4 is driven to move downwards, and the throttling port of each air distributing chamber of the auxiliary air chamber 3 is turned down in sequence and each air distributing chamber of the auxiliary air chamber 3 is closed, so that the stiffness of the air spring is enhanced.
Description
One, technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring, the dynamic stiffness of this pneumatic spring is regulated with the displacement of air bag automatically.It especially is adapted to the carrying big bus, and the city bus big bus also is adapted to shipping truck and rail traffic vehicles, and special vehicle and limousine.
Two, background technique:
In order to improve ride of vehicle, improve the travelling comfort of taking, alleviate the damage of vehicle to road and goods, developed country has adopted pneumatic spring widely in the suspension system of its carrier vehicle.China recent years is also being widelyd popularize and mandatory employing pneumatic spring.In the pneumatic spring technology of constantly development, in order further to improve the rigidity control characteristic of pneumatic spring, more be applicable to the variation of car load in order to it, people have carried out deep exploration.In the active air suspension system; At present the technology of comparative maturity is that air chamber with pneumatic spring is divided into major and minor air chamber; Pressure reduction when realizing gas flow between the major-minor air chamber through the aperture of controlling the throttle valve on the connecting passage between major and minor air chamber changes, and reaches the rigidity that changes pneumatic spring.The control signal of this rigidity regulating system is by the multiple sensor collection, and deliver and send control command after microprocessor is handled, by the aperture that actuator regulates throttle valve, the rigidity that the pressure reduction when regulating gas flow between the major-minor air chamber is regulated pneumatic spring.Its main deficiency at first is: the signal of system is comparatively numerous and diverse to carrying out from collecting treatment, and its cost is too high, can only be applied on the luxurious vehicle of only a few.Secondly, the response time lag is big.The control of rigidity segmented is generally adopted in control in the rigidity of the airsuspension system air spring of semi-active suspension, with the rigidity of pneumatic spring be divided into soft, hard two retainings or soft, in, hard three retainings.The air spring rigidity control of this rigidity regulating system is to select control through the driver's operation solenoid valve, and the restriction aperture is large, medium and small between corresponding respectively connection major-minor air chamber.The adjusting of this rigidity is not continuous.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, and simple and reliable, dynamic stiffness governing response is pneumatic spring efficiently.
Solution of the present invention is: pneumatic spring is combined by air bag 1, upper mounting plate 2, accessory air-space 3, removable cover 4, spring 5, push rod 6 and lower installation board 7.Fixing push rod 6 on the central position of upper mounting plate 2 inner planes; Fixing accessory air-space 3 that is separated into several sub-air chamber on the central position of lower installation board 7 inner planes; The outside suit of accessory air-space 3 internal diameter and accessory air-space 3 external diameters removable cover 4 movingly, the last cover cavity of the top of accessory air-space 3 and removable cover 4 is equipped with spring 5; Under the acting on of spring 5, removable cover 4 contacts and moves up and down with it with push rod 6 all the time.When vehicle is in setting height; Removable cover 4 is minimum with the axial suit length of accessory air-space 3; The radially throttle orifice of each sub-air chamber of accessory air-space 3 all communicates with air bag 1, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the air actual volume in the air bag 1 in the air bag 1; When vehicle dynamic load increase at the volley, the upper mounting plate 2 of air bag 1 moves down under the effect of dynamic load, and push rod 6 can move down thereupon; Promoting removable cover 4 moves down; Turn down successively accessory air-space 3 each sub-air chamber restriction with close each sub-air chamber of accessory air-space 3, pressure reduction and the actual volume that reduces in the air bag 1 when improving air bag 1, the dynamic stiffness of raising pneumatic spring with 3 gas flow of accessory air-space; The dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
Control signal of the present invention is directly taken from the displacement of air bag 1, and control signal and regulating command are integrated, and effect rapidly, does not reliably have the response time lag, and the rigidity regulating power of pneumatic spring greatly improves; After having guaranteed the low vibration frequency characteristic of pneumatic spring, through the load-deflection curve that sub-air chamber that not isometric sub-air chamber and number do not wait can improve pneumatic spring effectively is set.Because control signal and regulating command are integrated, need not to have again the acquisition processing system and the actuator of signal, need not ECU and control software, cost greatly descends; Because control command of the present invention is the displacement of upper mounting plate 2, the rigidity of pneumatic spring is regulated with the change in displacement of upper mounting plate 2 automatically, regulates smooth and easy continuous.The adjusting load-deflection curve of pneumatic spring is more reasonable and controlled.
For making things convenient for the present invention's accurate adjustment in use, push rod 6 can be designed to regulate the structural type of height up and down, so that the position to axial of adjustment accessory air-space 3 and removable cover 4.Also can spring 5 be designed to extension spring, be fixed on the inner plane of loam cake plane and upper mounting plate 2 of removable cover 4.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Five, embodiment:
Embodiment of the present invention is: when vehicle is in setting height; Removable cover 4 is minimum with the axial suit length of accessory air-space 3; The radially throttle orifice of each sub-air chamber of accessory air-space 3 all communicates with air bag 1, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the air actual volume in the air bag 1 in the air bag 1; When vehicle dynamic load increase at the volley, upper mounting plate 2 moves down under the effect of dynamic load; Push rod 6 can move down thereupon; Promote removable cover 4 and move down, turn down successively accessory air-space 3 each sub-air chamber restriction and close each sub-air chamber of accessory air-space 3 successively, pressure reduction and the rigidity that reduces the actual volume raising pneumatic spring in the air bag 1 when improving air bag 1 with 3 gas flow of accessory air-space; The dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
Claims (5)
1. follow the pneumatic spring that dynamic stiffness is regulated in the air bag displacement for one kind, combine by air bag (1), upper mounting plate (2), accessory air-space (3), removable cover (4), spring (5), push rod (6), lower installation board (7); It is characterized in that: fixing push rod (6) in the inner plane central position of upper mounting plate (2); At the inner plane central position of lower installation board (7) fixed joint air chamber (3); The outside suit of accessory air-space (3) internal diameter and accessory air-space (3) external diameter removable cover (4) movingly, the last cover cavity of the top of accessory air-space (3) and removable cover (4) is equipped with spring (5); Under the acting on of spring (5), removable cover (4) contacts and moves up and down with it with push rod (6) all the time; When vehicle is in setting height; Removable cover (4) is minimum with the axial suit length of accessory air-space (3); The radially throttle orifice of each sub-air chamber of accessory air-space (3) all communicates with air bag (1); The rigidity of pneumatic spring is minimum, and is determined by gas pressure and the air actual volume in the air bag (1) according to load request in the air bag (1); When vehicle dynamic load increase at the volley, upper mounting plate (2) moves down under the effect of dynamic load; Push rod (6) moves down thereupon, promotes removable cover (4) and moves down, turn down successively accessory air-space (3) each sub-air chamber restriction with close each sub-air chamber of accessory air-space (3); The pressure reduction actual volume interior when improving gas flow between air bag (1) and accessory air-space (3) with reducing air bag (1); Improve the rigidity of pneumatic spring, the dynamic load of balance vehicle body stops the inclination of vehicle body.
2. a kind of pneumatic spring that dynamic stiffness is regulated in the air bag displacement of following according to claim 1 is characterized in that: the volume of the independent sub-air chamber of accessory air-space (3) can change according to the different demands of different automobile types to its air spring rigidity change curve with number.
3. a kind of pneumatic spring that dynamic stiffness is regulated in the air bag displacement of following according to claim 1, it is characterized in that: push rod (6) is made into one with upper mounting plate (2).
4. a kind of pneumatic spring that dynamic stiffness is regulated in the air bag displacement of following according to claim 1, it is characterized in that: spring (5) is made into extension spring, and two ends are fixed on the top plan of inner plane and removable cover (4) of upper mounting plate (2).
5. a kind of pneumatic spring that dynamic stiffness is regulated in the air bag displacement of following according to claim 1, it is characterized in that: push rod (6) is designed to regulate the structural type of height up and down, so that the position to axial of adjustment accessory air-space (3) and removable cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101681923A CN102401074A (en) | 2011-06-21 | 2011-06-21 | Air spring for adjusting dynamic stiffness along with displacement of air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101681923A CN102401074A (en) | 2011-06-21 | 2011-06-21 | Air spring for adjusting dynamic stiffness along with displacement of air bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102401074A true CN102401074A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101681923A Pending CN102401074A (en) | 2011-06-21 | 2011-06-21 | Air spring for adjusting dynamic stiffness along with displacement of air bag |
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| Country | Link |
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| CN (1) | CN102401074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221646A (en) * | 2015-08-28 | 2016-01-06 | 郑州宇通客车股份有限公司 | A kind of pneumatic spring and use the vehicle of this pneumatic spring |
| CN106090404A (en) * | 2016-08-25 | 2016-11-09 | 四川威卡自控仪表有限公司 | Actuator with air as power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1079138A1 (en) * | 1999-08-25 | 2001-02-28 | Continental Aktiengesellschaft | System with adjustable air spring and adjustable shock absorber and control method therefor |
| CN2505315Y (en) * | 2001-11-29 | 2002-08-14 | 马鞍山市大陆科技实业有限公司 | Rubber air spring for suspension vehicle |
| CN1840369A (en) * | 2005-03-29 | 2006-10-04 | 株式会社万都 | Air suspension and electronically controlled suspension system |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
| CN101628533A (en) * | 2008-07-17 | 2010-01-20 | 贺勍 | Damper for air suspension and self-adaptive damping adjustment method thereof |
-
2011
- 2011-06-21 CN CN2011101681923A patent/CN102401074A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1079138A1 (en) * | 1999-08-25 | 2001-02-28 | Continental Aktiengesellschaft | System with adjustable air spring and adjustable shock absorber and control method therefor |
| CN2505315Y (en) * | 2001-11-29 | 2002-08-14 | 马鞍山市大陆科技实业有限公司 | Rubber air spring for suspension vehicle |
| CN1840369A (en) * | 2005-03-29 | 2006-10-04 | 株式会社万都 | Air suspension and electronically controlled suspension system |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
| CN101628533A (en) * | 2008-07-17 | 2010-01-20 | 贺勍 | Damper for air suspension and self-adaptive damping adjustment method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221646A (en) * | 2015-08-28 | 2016-01-06 | 郑州宇通客车股份有限公司 | A kind of pneumatic spring and use the vehicle of this pneumatic spring |
| CN106090404A (en) * | 2016-08-25 | 2016-11-09 | 四川威卡自控仪表有限公司 | Actuator with air as power |
| CN106090404B (en) * | 2016-08-25 | 2019-07-02 | 四川威卡自控仪表有限公司 | Using air as the executing agency of power |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20120404 |