CN102401063A - Air spring with dynamic stiffness adjusted by using auxiliary air chamber and pressure limiting and impact reducing combination - Google Patents
Air spring with dynamic stiffness adjusted by using auxiliary air chamber and pressure limiting and impact reducing combination Download PDFInfo
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- CN102401063A CN102401063A CN2011101990664A CN201110199066A CN102401063A CN 102401063 A CN102401063 A CN 102401063A CN 2011101990664 A CN2011101990664 A CN 2011101990664A CN 201110199066 A CN201110199066 A CN 201110199066A CN 102401063 A CN102401063 A CN 102401063A
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Abstract
The invention discloses an air spring with dynamic stiffness adjusted by using an auxiliary air chamber and a pressure limiting and impact reducing combination. Due to the defect of the stiffness characteristic of an air spring of a driven air suspension frame and unreasonable matching between the stiffness of a standard-series air bag and the entire vehicle parameters, the lateral motion phenomenon of a vehicle in which the driven air suspension frame is adopted is relatively severe, passengers and a driver often feel dizzy and uncomfortable, and the comfort of the passengers and the safe driving of the driver are influenced severely. A major cause which severely influences the popularization and application of the driven air suspension frame on a passenger vehicle is given. The air spring is a compound air spring of which the dynamic stiffness can be adjusted by automatically tracking the vehicle body movement in a driven air suspension frame system. By adopting the air spring, the antiroll capability of a vehicle for which the driven air suspension frame is adopted can be enhanced effectively, lateral motion of the vehicle is reduced, the stiffness of the air spring can be reduced when the vehicle meets bumps on the road surface, the impact of the bumps on the road surface on the vehicle body is reduced, and the driving smoothness of the vehicle is enhanced.
Description
One. technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring.Thisly add the pressure limiting one-way valve by built-in accessory air-space change rigidity and subtract the composite air spring that dashes combination and especially be adapted to the carrying big bus, 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 air suspension widely in the suspension system of its carrier vehicle.China recent years is also being widelyd popularize and mandatory employing air suspension.In the air suspension 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, have developed multiple half active and active air suspension system.Mainly due to the reason on the cost, half active and active air suspension system can only be applied on the senior luxurious vehicle of minority at present.What generally use at present is the passive type airsuspension system; Because the defective of the air spring rigidity characteristic self of passive type air suspension; The coupling of air bag rigidity and whole-car parameters that adds standard series is unreasonable, can not carry out personalization again and regulate what is more important: in the vehicle operating because the side-sway that the mass inertia dynamic load of getting on the bus causes; Can not get the effective restraint of the dynamic rate compensation of pneumatic spring; Caused adopting the vehicle of the passive type air suspension side-sway phenomenon that is in operation more serious, it is dizzy and uncomfortable that occupant and driver are produced, seriously influence occupant's travelling comfort and driver's safe driving.This has become seriously influences the main cause that the passive type air suspension is applied on various vehicles.
Three. summary of the invention:
The purpose of this reality invention will be developed a kind of low cost exactly; Simple and reliable and can improve the dynamic stiffness of pneumatic spring effectively to the mass inertia dynamic load of getting on the bus the in service of vehicle; Again can be at the composite air spring that is directed against the dynamic stiffness that reduces pneumatic spring effectively of road surface projection class step evolution dynamic load in service of vehicle; Improve the smoothness of vehicle amount, reduce the side-sway of vehicle.
Solution of the present invention is: this accessory air-space change rigidity adds pressure limiting and subtracts the pneumatic spring that dashes combination, is combined by air bag 1, upper mounting plate 2, accessory air-space 3, one-way valve 4, lower installation board 5 and adjusting bolt 6.The center line of accessory air-space 3 overlaps with the line at the center of lower installation board 5, and fixes on it.Be provided with a diameter on the top plan of accessory air-space 3 or on the wall body at other positions less than the aperture of communicated air bags 1 with one-way valve 4 inlet holes; On the inwall of one-way valve 4 attached to accessory air-space 3, and be communicated with the cracking pressure of regulating one-way valve 4 by adjusting bolt 6 with air bag 1 through the aperture on accessory air-space 3 sidewalls.The size of accessory air-space 3 is confirmed according to the requirement of different automobile types.The cracking pressure of one-way valve 4 can be by regulating the external according to the actual requirements adjustment of bolt 6 at pneumatic spring.Dynamic stiffness regulating method of the present invention is: because the vapour lock effect of aperture on the end face wall body of auxiliary tank 3, when air bag 1 was not compressed, it had been communicated with air bag 1 and auxiliary tank 3, and the volume in the air bag 1 does not have change, and the quiet rigidity of pneumatic spring is constant; And as long as air bag 1 is compressed, just having gas flows at air bag 1 and 3 of auxiliary tanks, and at this moment, this aperture will produce vapour lock, changes the dynamic stiffness of pneumatic spring, and the dynamic stiffness of pneumatic spring is changed with the speed that air bag 1 moves.Dynamic load is big more, and the speed of air bag 1 motion is just big more, and vapour lock that this aperture produces is just big more, and the dynamic stiffness of pneumatic spring just increases sooner.
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 one-way valve 4; 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, improve the smoothness of vehicle vehicle body.
The present invention is simple in structure, and is with low cost, easy for installation, and reliable performance is a kind ofly can be in the passive type airsuspension system to regulate the composite air bullet of the dynamic stiffness of pneumatic spring from the motion tracking body movement.This composite air spring can improve employing passive type air suspension vehicle anti-roll capability effectively, reduces the vehicle side-sway.Can also when vehicle is run into the road surface projection, reduce the rigidity of pneumatic spring, reduce of the impact of road surface projection, improve the smoothness of vehicle driving vehicle body.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Five, embodiment:
Dynamic stiffness regulating method of the present invention is: because the vapour lock effect of the aperture on the end face wall body of auxiliary tank 3, when air bag 1 was not compressed, it had been communicated with air bag 1 and auxiliary tank 3, and the volume in the air bag 1 does not have change, and the quiet rigidity of pneumatic spring is constant; And as long as air bag 1 is compressed, just having gas flows at air bag 1 and 3 of auxiliary tanks, and at this moment, this aperture will produce vapour lock, changes the dynamic stiffness of pneumatic spring, and the dynamic stiffness of pneumatic spring is changed with the speed that air bag 1 moves.Dynamic load is big more, and the speed of air bag 1 motion is just big more, and vapour lock that this aperture produces is just big more, and the dynamic stiffness of pneumatic spring just increases sooner.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 one-way valve 4; 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, improve the smoothness of vehicle vehicle body.The cracking pressure of one-way valve 4 can be by regulating the external according to the actual requirements adjustment of bolt 6 at pneumatic spring.
Claims (5)
1. an accessory air-space is transferred rigidity and is added pressure limiting and subtract the pneumatic spring that dashes combination, is combined by air bag (1), upper mounting plate (2), accessory air-space (3), one-way valve (4), lower installation board (5) and adjusting bolt (6); It is characterized in that: the central lines of the center line of accessory air-space (3) and lower installation board (6), and fix on it; Be provided with an aperture on the face allocating of accessory air-space (3); On the inwall of one-way valve (4) attached to accessory air-space (3), and be communicated with the cracking pressure of regulating one-way valve (4) by adjusting bolt (6) with air bag (1) through the aperture on accessory air-space (3) sidewall; The cracking pressure of one-way valve (4) can be by regulating the external according to the actual requirements adjustment of bolt (6) at pneumatic spring; Dynamic stiffness regulating method of the present invention is: because the vapour lock effect of the aperture on the end face wall body of auxiliary tank (3); When air bag (1) when not being compressed; It has been communicated with air bag (1) and auxiliary tank (3), and the volume in the air bag (1) does not have change, and the quiet rigidity of pneumatic spring is constant; And as long as air bag (1) is compressed, just having gas flows between air bag (1) and auxiliary tank (3), and at this moment, this aperture will produce vapour lock, changes the dynamic stiffness of pneumatic spring, and the dynamic stiffness of pneumatic spring is changed with the speed that air bag (1) moves; Dynamic load is big more, and the speed of air bag (1) motion is just big more, and vapour lock that this aperture produces is just big more, and the dynamic stiffness of pneumatic spring just increases sooner; 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 one-way valve (4); 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, improve the smoothness of vehicle vehicle body.
2. a kind of accessory air-space transfer rigidity according to claim 1 adds pressure limiting and subtracts the pneumatic spring that dashes combination, and it is characterized in that: the size of accessory air-space (3), shape are confirmed according to different requirement.
3. a kind of accessory air-space transfer rigidity according to claim 1 adds pressure limiting and subtracts the pneumatic spring that dashes combination, and it is characterized in that: accessory air-space (3), one-way valve (4) and adjusting bolt (6) are installed on the upper mounting plate (2).
4. a kind of accessory air-space transfer rigidity according to claim 1 adds pressure limiting and subtracts the pneumatic spring that dashes combination, it is characterized in that: accessory air-space (3) is that nonmetallic material are made.
5. a kind of accessory air-space transfer rigidity according to claim 1 adds pressure limiting and subtracts the pneumatic spring that dashes combination, it is characterized in that: accessory air-space (3) is that metallic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101990664A CN102401063A (en) | 2011-07-17 | 2011-07-17 | Air spring with dynamic stiffness adjusted by using auxiliary air chamber and pressure limiting and impact reducing combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101990664A CN102401063A (en) | 2011-07-17 | 2011-07-17 | Air spring with dynamic stiffness adjusted by using auxiliary air chamber and pressure limiting and impact reducing combination |
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| Publication Number | Publication Date |
|---|---|
| CN102401063A true CN102401063A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101990664A Pending CN102401063A (en) | 2011-07-17 | 2011-07-17 | Air spring with dynamic stiffness adjusted by using auxiliary air chamber and pressure limiting and impact reducing combination |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054015A1 (en) * | 1997-05-26 | 1998-12-03 | Isuzu Motors Limited | Suspension device for vehicles |
| EP1022168A2 (en) * | 1999-01-19 | 2000-07-26 | Paccar Inc. | Pneumatic vehicle suspension system with variable spring stiffness |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
-
2011
- 2011-07-17 CN CN2011101990664A patent/CN102401063A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054015A1 (en) * | 1997-05-26 | 1998-12-03 | Isuzu Motors Limited | Suspension device for vehicles |
| EP1022168A2 (en) * | 1999-01-19 | 2000-07-26 | Paccar Inc. | Pneumatic vehicle suspension system with variable spring stiffness |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
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Application publication date: 20120404 |