CN102392868A - Composite air spring with built-in spiral spring plus filled liquid and auxiliary air chamber - Google Patents
Composite air spring with built-in spiral spring plus filled liquid and auxiliary air chamber Download PDFInfo
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- CN102392868A CN102392868A CN2011102002046A CN201110200204A CN102392868A CN 102392868 A CN102392868 A CN 102392868A CN 2011102002046 A CN2011102002046 A CN 2011102002046A CN 201110200204 A CN201110200204 A CN 201110200204A CN 102392868 A CN102392868 A CN 102392868A
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- spring
- auxiliary tank
- way valve
- air bag
- air
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Abstract
In the stiffness adjustment of the air spring, people neglects static stiffness adjustment which is needed due to the difference between the stiffness of optional standard series air bags and the stiffness required by a specific vehicle model. The dynamic stiffness adjustment of the air spring is difficult often due to the mismatching of the static stiffness of an air bag. In a passive air suspension system, the inherent insufficiency of the static stiffness of the air bag is an important reason causing the severe sidesway of a running vehicle. As a result, the sidesway phenomenon of the running vehicle is severe, which often causes passengers and a diver to feel dizzy and uncomfortable. Aimed at the problem, the invention develops a composite air spring with the combination of a built-in spiral spring and filled liquid. The composite air spring can utilize a check valve to fill compounded liquid into an air bag, so that the static stiffness of the air spring is adjusted, and when a vehicle runs, the dynamic stiffness of the passive air spring can be effectively compensated by means of the built-in spring and a fixed orifice; and the composite air spring also can automatically decrease dynamic stiffness when the wheels of the running vehicle run into bumps, so that the impact of the bumps on the road surface on the vehicle body can be reduced.
Description
One, technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring.The pneumatic spring that this built-in helical spring adds topping up and auxiliary tank combination 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 the passive type airsuspension system of special vehicle.
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 passive type airsuspension system of generally using at present; Because the anti-roll stiffness of pneumatic spring is lower; Caused the vehicle side-sway phenomenon that is in operation more serious, it is dizzy and uncomfortable that occupant and driver are produced, and seriously influences occupant's travelling comfort and driver's safe driving.In the rigidity of pneumatic spring was regulated, people had ignored owing to optional standard series air bag rigidity and the static stiffness that concrete vehicle requires the difference of rigidity to need are regulated.And often because the difficulty that the static stiffness of air bag does not match and caused its dynamic rate to regulate.In the passive type airsuspension system then the static stiffness of air bag not match be to cause the serious major reason of side-sway in the vehicle operating.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, and is simple and reliable, can effectively regulate air spring static rigidity, and make-up air spring dynamic rate improves the vehicle anti-roll capability fast, reduces the vehicle side-sway; Can also when the wheel in service of vehicle is run into projection, reduce dynamic stiffness automatically, reduce the composite air spring of road surface projection the impact of vehicle body.
Solution of the present invention is: this built-in helical spring adds the composite air spring of topping up and auxiliary tank, by air bag 1, upper mounting plate 2, auxiliary tank 3, helical spring 4, locating stud 5, gate valve 6, lower installation board 7, topping up one-way valve 8 and subtracting towards one-way valve 9 combines down.On the central position of the inner plane of upper mounting plate 2 and lower installation board 7, auxiliary tank 3 and following locating stud 5 are installed; Arbitrary position on auxiliary tank 3 sidewalls has a small-bore hole, the fixed restrictive valve between suitable air bag 1 of this aperture and the auxiliary tank 3; It can follow the dynamic stiffness of the movement velocity adjusting pneumatic spring of air bag 1; Can also discharge the residual pressure of gas in the auxiliary tank 3; The top of helical spring 4 is enclosed within on the auxiliary tank 3, and the bottom is enclosed within down on the locating stud 5; Subtract towards one-way valve 9 and be installed on the outer bottom plane of auxiliary tank 3, and be communicated with the spring chamber that subtracts towards one-way valve 9 by the aperture on auxiliary tank 3 base plates; The clean interior outage degree of the air bag 1 the when free height of helical spring 4 is equal to or slightly greater than vehicle maximum ride height; Gate valve 6 is installed on the lower installation board 7 with topping up one-way valve 8; The quiet rigidity of pneumatic spring is regulated: in air bag 1, charge into chemical combination liquid via topping up one-way valve 8, the chemical combination liquid that charges into has occupied the volume in the air bag 1, has reduced the gas actual volume in the air bag 1, has improved the quiet rigidity of pneumatic spring; Otherwise, discharge the part chemical combination liquid that has charged into by gate valve 6, just reduced the quiet rigidity of pneumatic spring; The dynamic compensation of pneumatic spring dynamic stiffness: when vehicle was in maximum ride height, helical spring 4 is in did not have compression or small amount of compression state, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and air actual volume in the air bag 1 in the air bag 1; Vehicle is in when using ride height always, and helical spring 4 is in compressive state, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the rigidity of air actual volume in the air bag 1 and helical spring 4 in the air bag 1; When vehicle was in minimum ride height, helical spring 4 was in further compressive state, and the rigidity of pneumatic spring is by determining according to the air actual volume in the inflation pressure of load request and the air bag 1 and the rigidity of helical spring 4 in the air bag 1; When vehicle dynamic load at the volley increases, upper mounting plate 2 moves down at the effect lower compression air bag 1 of dynamic load, compression helical spring 4 simultaneously, and along with upper mounting plate 2 moves down under the effect of dynamic load, the elastic anchorage force of helical spring 4 can increase thereupon; Along with upper mounting plate 2 moves downward under the effect of dynamic load; Fixed orifice between air bag 1 and the auxiliary tank 3 also can improve the dynamic stiffness of pneumatic spring; The part dynamic load of balance vehicle body; The inclination that stops vehicle body with lean forward and swing back, reduce the side-sway of vehicle body when advancing, the dynamic stability and the travelling comfort of raising vehicle body.When wheel is run into the road surface projection, impact for step of wheel, the air pressure that will inevitably cause in the air bag 1 produces step.The pressure reduction that this step pressure and auxiliary tank 3 internal air pressures form can be opened and subtract towards one-way valve 9; Rapid communicated air bags 1 and auxiliary tank 3; Increased the available gas volume in the air bag 1, reduced the dynamic stiffness of pneumatic spring, reduced of the impact of road surface projection vehicle body; Improve occupant's the travelling comfort and the smoothness of vehicle.
The present invention can change the logical structure of side into by bypass structure with subtracting towards one-way valve 9; Be installed on the madial wall of auxiliary tank 3; Be communicated with the suction port that subtracts towards one-way valve 9 by the aperture on auxiliary tank 3 sidewalls, subtract aperture on one-way valve 9 valve bodies and be communicated with and subtract spring chamber and auxiliary tank 3 towards one-way valve 9.Also can be installed on the inwall of auxiliary tank 3, be communicated with the suction port that subtracts towards one-way valve 9, subtract spring chamber connection auxiliary tank 3 towards one-way valve 9 by the aperture on auxiliary tank 3 inwalls with subtracting towards one-way valve 9.
The present invention is simple in structure, and is with low cost, easy for installation, and reliable performance is a kind ofly in the passive type airsuspension system, can effectively regulate air spring static rigidity, and its dynamic rate of timely compensation reduces the method for vehicle side-sway; Also can be through changing helical spring rigidity and adapting to the requirement of different automobile types with decrement.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Five, embodiment:
Embodiment of the present invention is: the static stiffness of this pneumatic spring is regulated: in air bag 1, charge into chemical combination liquid via topping up one-way valve 8; The chemical combination liquid that charges into has occupied the volume in the air bag 1; Reduce the gas actual volume in the air bag 1, improved the quiet rigidity of pneumatic spring; Otherwise,, just reduced the quiet rigidity of pneumatic spring by the chemical combination liquid that gate valve 6 discharge sections have charged into; The dynamic compensation of pneumatic spring dynamic stiffness: when vehicle dynamic load at the volley increases; Upper mounting plate 2 moves down at the effect lower compression air bag 1 of dynamic load; Compression helical spring 4 simultaneously; Along with the effect lower compression air bag 1 of upper mounting plate 2 in dynamic load moves down, the elastic anchorage force of helical spring 4 can increase thereupon; Along with upper mounting plate 2 moves downward under the effect of dynamic load; Fixed orifice between air bag 1 and the auxiliary tank 3 also can improve the dynamic stiffness of pneumatic spring; The part dynamic load of balance vehicle body; The inclination that stops vehicle body with lean forward and swing back, reduce the side-sway of vehicle body when advancing, the dynamic stability and the travelling comfort of raising vehicle body.When wheel is run into the road surface projection, impact for step of wheel, the air pressure that will inevitably cause in the air bag 1 produces step.The pressure reduction that this step pressure and auxiliary tank 3 internal air pressures form can be opened and subtract towards one-way valve 9; Rapid communicated air bags 1 and auxiliary tank 3; Increased the available gas volume in the air bag 1; Reduce the dynamic stiffness of pneumatic spring, reduce of the impact of road surface projection, improve occupant's the travelling comfort and the smoothness of vehicle vehicle body.
Claims (6)
1. a built-in helical spring adds the composite air spring of topping up and auxiliary tank, by air bag (1), upper mounting plate (2), auxiliary tank (3), helical spring (4), locating stud (5), gate valve (6), lower installation board (7), topping up one-way valve (8) and subtracting towards one-way valve (9) combines down; It is characterized in that: on the central position of the inner plane of upper mounting plate (2) and lower installation board (7), auxiliary tank (3) and following locating stud (5) are installed, the top of helical spring (4) is enclosed within on the auxiliary tank (3), and the bottom is enclosed within down on the locating stud (5); Subtract towards one-way valve (9) and be installed on the outer bottom plane of auxiliary tank (3), and be communicated with the spring chamber that subtracts towards one-way valve (9) by the aperture on auxiliary tank (3) base plate; On auxiliary tank (3) sidewall, have a small-bore hole, the fixed restrictive valve between suitable air bag of this aperture (1) and the auxiliary tank (3); It can follow the dynamic stiffness of the movement velocity adjusting pneumatic spring of air bag (1); Gate valve (6) and topping up one-way valve (8) are installed on the lower installation board (7); The quiet rigidity of pneumatic spring is regulated: in air bag (1), charge into chemical combination liquid via topping up one-way valve (8), the chemical combination liquid that charges into has occupied the volume in the air bag (1), has reduced the gas actual volume in the air bag (1), has improved the quiet rigidity of pneumatic spring; Otherwise, discharge the part chemical combination liquid that has charged into by gate valve (6), just reduced the quiet rigidity of pneumatic spring; The dynamic compensation of pneumatic spring dynamic stiffness: when vehicle dynamic load at the volley increases; Upper mounting plate (2) moves down at the effect lower compression air bag (1) of dynamic load; Compression helical spring (4) simultaneously; The elastic anchorage force of helical spring (4) can increase thereupon, and the fixed orifice between air bag (1) and the auxiliary tank (3) also can improve the dynamic stiffness of pneumatic spring, stops the inclination of vehicle body and leans forward and swing back; When wheel is run into the road surface projection, impact for step of wheel, the air pressure that will inevitably cause in the air bag (1) produces step; The pressure reduction that this step pressure and auxiliary tank (3) internal air pressure form can be opened and subtract towards one-way valve (9); Communicated air bags (1) and auxiliary tank (3) have increased the available gas volume in the air bag (1) rapidly, reduce the dynamic stiffness of pneumatic spring; Reduce of the impact of road surface projection to vehicle body, improve vehicle travelling comfort and smoothness.
2. a kind of built-in helical spring according to claim 1 adds the composite air spring of topping up and auxiliary tank, it is characterized in that: the rigidity of helical spring (4), height and precompressed amount can change according to the different demands of different automobile types to its air spring rigidity change curve.
3. a kind of built-in helical spring according to claim 1 adds the composite air spring of topping up and auxiliary tank, it is characterized in that: upper mounting plate (2) and auxiliary tank (3) are combined into one.
4. a kind of built-in helical spring according to claim 1 adds the composite air spring of topping up and auxiliary tank, it is characterized in that: lower installation board (7) and following locating stud (5) are combined into one.
5. a kind of built-in helical spring according to claim 1 adds the composite air spring of topping up and auxiliary tank; It is characterized in that: will subtract towards one-way valve (9) and change the logical structure of side into by bypass structure; Be installed on the madial wall of auxiliary tank (3); Be communicated with the suction port that subtracts towards one-way valve (9) by the aperture on auxiliary tank (3) sidewall, subtract aperture on one-way valve (9) valve body and be communicated with and subtract spring chamber and auxiliary tank (3) towards one-way valve (9).
6. a kind of built-in helical spring according to claim 1 adds the composite air spring of topping up and auxiliary tank; It is characterized in that: will subtract towards one-way valve (9) and be installed on the madial wall of auxiliary tank (3); Be communicated with the suction port that subtracts towards one-way valve (9) by the aperture on auxiliary tank (3) sidewall, subtract spring chamber connection auxiliary tank (3) towards one-way valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102002046A CN102392868A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with built-in spiral spring plus filled liquid and auxiliary air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102002046A CN102392868A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with built-in spiral spring plus filled liquid and auxiliary air chamber |
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|---|---|
| CN102392868A true CN102392868A (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102002046A Pending CN102392868A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with built-in spiral spring plus filled liquid and auxiliary air chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248736A (en) * | 2020-10-24 | 2021-01-22 | 安徽思诺物流装备有限公司 | Air spring suspension system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1022479B (en) * | 1955-03-04 | 1958-01-09 | Maschf Augsburg Nuernberg Ag | Device for regulating an air spring in motor vehicles |
| EP0166702A2 (en) * | 1984-06-27 | 1986-01-02 | FIAT AUTO S.p.A. | Variable-stiffnes air spring, particularly for motor vehicle suspensions |
| CN1150623A (en) * | 1995-11-20 | 1997-05-28 | Woco弗兰兹-约瑟夫·沃尔夫公司 | Damping bearing |
| CN201396393Y (en) * | 2009-03-19 | 2010-02-03 | 尹学军 | Spring damping vibration isolator |
| CN101767166A (en) * | 2009-12-23 | 2010-07-07 | 南京埃尔法电液技术有限公司 | Oil-return damping device especially for high-speed punch press |
-
2011
- 2011-07-17 CN CN2011102002046A patent/CN102392868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1022479B (en) * | 1955-03-04 | 1958-01-09 | Maschf Augsburg Nuernberg Ag | Device for regulating an air spring in motor vehicles |
| EP0166702A2 (en) * | 1984-06-27 | 1986-01-02 | FIAT AUTO S.p.A. | Variable-stiffnes air spring, particularly for motor vehicle suspensions |
| CN1150623A (en) * | 1995-11-20 | 1997-05-28 | Woco弗兰兹-约瑟夫·沃尔夫公司 | Damping bearing |
| CN201396393Y (en) * | 2009-03-19 | 2010-02-03 | 尹学军 | Spring damping vibration isolator |
| CN101767166A (en) * | 2009-12-23 | 2010-07-07 | 南京埃尔法电液技术有限公司 | Oil-return damping device especially for high-speed punch press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248736A (en) * | 2020-10-24 | 2021-01-22 | 安徽思诺物流装备有限公司 | Air spring suspension system |
| CN112248736B (en) * | 2020-10-24 | 2023-03-14 | 安徽思诺物流装备有限公司 | Air spring suspension system |
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Application publication date: 20120328 |