CN102367046A - Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference - Google Patents
Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference Download PDFInfo
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- CN102367046A CN102367046A CN2011103173390A CN201110317339A CN102367046A CN 102367046 A CN102367046 A CN 102367046A CN 2011103173390 A CN2011103173390 A CN 2011103173390A CN 201110317339 A CN201110317339 A CN 201110317339A CN 102367046 A CN102367046 A CN 102367046A
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- air
- mount pad
- rigidity
- air bellow
- weighting material
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Abstract
An air spring in a modern automotive suspension system is very important for improving the vehicle smoothness and steering stability and protecting roads and cargoes. In order to expand the stiffness regulation range of the air spring, the mode of connecting a main air chamber and an auxiliary air chamber is adopted, and a throttle valve on the path of the main air chamber and the auxiliary air chamber is changed; a control signal for stiffness regulation is collected by multiple paths of sensors and is processed by a computer, and then an action order is sent out to regulate the stiffness of the air spring. But the control mode has big response time-lag and high cost. Aiming at the problems, the invention develops a novel adaptive air spring with a function of regulating dynamic stiffness based on pressure difference. A pressure signal in an air sac is directly used for controlling the throttling pressure difference on the path of the main air chamber and the auxiliary air chamber to achieve the purpose of continuously regulating the stiffness. The reversed impact pressure difference of the main air chamber and the auxiliary air chamber is utilized to control the throttle valve so as to weaken impact of a lug on a vehicle body. The air spring has the advantages of simple structure, quick and reliable response and low cost, and the static stiffness also can be regulated.
Description
One, technical field:
The present invention relates to that weighting material that a kind of vehicle air suspension uses is regulated quiet rigidity and self adaptation pressure reduction is regulated the air bellow of dynamic stiffness.This air bellow especially is adapted to carrying big bus, city bus big bus, load carrying vehicle, also is adapted to rail traffic vehicles, special vehicle and luxury car.
Two, background technology:
In order to improve ride of vehicle, improve traveling comfort and the road-holding property taken, alleviate the damage of vehicle to road and goods, developed country has adopted air bellow widely in the suspension system of its carrier vehicle.China recent years is also being widelyd popularize and mandatory employing air bellow.In the air bellow technology of constantly development, in order further to improve the rigidity regulating characteristic of air bellow, people have developed half active and active air suspension system.In the active air suspension system; At present the technology of comparative maturity is that air chamber with air bellow 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 flow regulating valve on the interface channel between major and minor air chamber changes, and reaches the dynamic stiffness that changes air bellow.The control signal of this dynamic stiffness control system is delivered and is sent control command after micro controller system is handled, by the aperture that actuating unit is regulated flow regulating valve, the dynamic stiffness of regulating air bellow by the multiple sensor collection.Its main deficiency at first is: the signal of system is comparatively numerous and diverse to carrying out from acquisition process, 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, is prone to cause system's control fails and reverse effect occurs.The control of rigidity sectional type is generally adopted in control in the rigidity of the airsuspension system air spring of semi-active suspension, with the rigidity of air bellow be divided into soft, hard two retainings or soft, in, hard three retainings.The air spring rigidity control of this rigidity control system is to select control through the driver's operation electromagnetic 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.The rigidity of air bellow is artificially to select according to road conditions.In engineering reality, people make air bag according to the design value of air bellow, but in the series of products of existing air bag, choose the approaching air bag of parameter according to design value.Here just there are two deficiencies can cause the quiet rigidity value of air bellow can not satisfy people's expection, the one, design error; The 2nd, the error between performance of products parameter and the design value of selecting for use.It needs a kind of actv. regulating measure and method quiet rigidity to air bellow in practical application to regulate, and makes it to reach and comparatively reasonably uses category.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, simple and reliable, responding fast, the convenient and practical air bellow that quiet rigidity is regulated and dynamic stiffness self adaptation pressure reduction is regulated.
Solution of the present invention is: this weighting material transfers quiet rigidity and pressure reduction to regulate the air bellow of dynamic stiffness, is combined by air bag 1, upper mounting plate 2, upper limit blob of viscose 3, bolt 4, throttle governing plate 5, following mount pad 6, lower limit bearing 7 and weighting material 8; Lower limit bearing 7 is fixed on down the center of mount pad 6, and lower limit bearing 7 has equal height with following mount pad 6; Throttle governing plate 5 by elasticity preferably elastomeric material process, or by elasticity preferably plastic material and metallic material process, be installed in the center of lower limit bearing 7 through bolt 4; On throttle governing plate 5 end faces, with following mount pad 6 top endoporus and lower limit bearing 7 cylindricals between the circumference that equates of annular flow groove line of centers on be uniformly distributed with several straight-through apertures; Being separated into air bellow with air bag 1 by throttle governing plate 5 is main gas tank, and following mount pad 6 is the composite air spring of accessory air-space; And formed the flow regulating valve of constant restriction by the aperture on the throttle governing plate 5; Throttle governing plate 5 can be made up of polylith; Weighting material 8 is bulk granular thing or annular slice thing; Its quiet rigidity control method is: in the assembling process of air bellow; Down 6 li fillings of mount pad are advanced through calculating or test the weighting material 8 of confirming volume earlier; Because filling has occupied the compressed-air actuated volume of equal volume in the air bellow advance the weighting material 8 in the following mount pad 6; Reduce compressed-air actuated volume, improved the quiet rigidity of air bellow; Otherwise, take out the weighting material 8 that part has been inserted for 6 li from following mount pad, just increased equal volume compressed-air actuated volume, just reduced the quiet rigidity of air bellow relatively.The control process of its dynamic stiffness is: when stationary vehicle with than the pulsation-free running state time; Air bag 1 and 6 air current flow of following mount pad are less; It is little that throttle governing plate 5 upper and lower surfaces do not have the pressure reduction differential pressure, and the dynamic stiffness of air bellow adds the internal capacity and the gaseous tension decision of mount pad 6 down by air bag 1 internal volume; When the dynamic load that is caused by carbody and mass carried increases; Pressure field that will pressure of top-down generation falls progressively in the volume of air bag 1 and following mount pad 6; Pressure gas quickens to flow at air bag 1 and 6 of following mount pads; Be arranged on the gas flow pressure reduction of 6 of speed setting air bag 1 that aperture on the throttle governing plate 5 can be automatically moves downward according to the dynamic load that increases and upper mounting plate 2 and following mount pads, heighten the dynamic stiffness of air bellow automatically, the dynamic load that balance is caused by carbody and mass carried; Reduce the inclination of vehicle body, improve the ride comfort and the road-holding property of vehicle; When vehicle is in operation when running into the road surface projection; Can produce a step pressure surge that successively decreases from the bottom to top in mount pad 6 and the air bag 1 down this moment; The impact of this step pressure wave makes throttle governing plate 5 upwards turn over from the cylindrical baseplane to stick up, and has added the side torus section of throttle governing plate 5 cylindrical baseplanes with following mount pad 6 tops rapidly, has eliminated the pressure reduction of throttle governing plate about in the of 5; The dynamic stiffness that makes air bellow is minimum; Be beneficial to being compressed rapidly of air bellow, reduce of the impact of road surface projection, improve the ride comfort of vehicle vehicle body.
The present invention be directed to the typical structure design-calculated of existing air bellow; It need not the structure of existing air bellow is done any change; Only need to design and produce out a throttle governing plate 5 according to the performance perameter of former air bellow; If a little higher than mount pads 6 down of lower limit bearing 7 can be installed the lightweight Gask-O-Seal that a tile height is a bit larger tham the diff-H of lower limit bearing 7 and following mount pad 6 on the cylindrical baseplane of throttle governing plate 5, can original passive type air bellow be upgraded become quiet rigidity and can be in harmonious proportion the change rigidity air bellow of dynamic stiffness self adaptation adjusting; Help reducing the inclination of vehicle body, improve the ride comfort and the road-holding property of vehicle; Help promoting the use of of cost-cutting and air suspension.
Control signal of the present invention is directly taken from the pressure in the air bellow, and control signal and regulating command are integrated, and effect rapidly, does not reliably have the response time lag, and the dynamic stiffness regulating power of air bellow greatly improves; After having guaranteed the low oscillation frequency characteristic of air bellow, the cutoff port that number does not wait on the volume through different major-minor air chambers is set and the throttle governing plate 5 and set up different diameters and the auxiliary spacer of sheet number can improve the load-deflection curve of air bellow effectively.Because control signal and regulating command are integrated, need not to have again the acquisition processing system and the actuating unit of signal, need not ECU and Control Software, cost greatly descends; Because control command of the present invention is the pressure reduction of major-minor air chamber, the rigidity of air bellow changes and automatically regulating with the pressure of major-minor air chamber, regulates smooth and easy continuous.The adjusting load-deflection curve of air bellow is more reasonable and controlled.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Five, the specific embodiment:
The specific embodiment of the present invention is: quiet rigidity is regulated: in the assembling process of air bellow; Down the weighting material 8 through calculating or the definite volume of test is loaded in mount pad 6 inside earlier; Because filling has occupied the compressed-air actuated volume of equal volume in the air bellow advance the weighting material 8 in the following mount pad 6; Reduce compressed-air actuated volume, improved the quiet rigidity of air bellow; Otherwise, take out the weighting material 8 that part has been inserted for 6 li from following mount pad, just increased equal volume compressed-air actuated volume, just reduced the quiet rigidity of air bellow relatively.Dynamic stiffness is regulated: when stationary vehicle with than the pulsation-free running state time; Air bag 1 and 6 gas flow of following mount pad are less; It is little that throttle governing plate 5 upper and lower surfaces do not have the pressure reduction differential pressure, and the dynamic stiffness of air bellow adds the internal capacity and the air pressure decision of mount pad 6 down by air bag 1 internal volume; When the dynamic load that is caused by carbody and mass carried increases; Pressure field that will pressure of top-down generation falls progressively in the volume of air bag 1 and following mount pad 6; Pressure gas quickens to flow at air bag 1 and 6 of following mount pads; Be arranged on the gas flow pressure reduction of 6 of speed setting air bag 1 that aperture on the throttle governing plate 5 can be automatically moves downward according to the dynamic load that increases and upper mounting plate 2 and following mount pads, heighten the dynamic stiffness of air bellow automatically, the dynamic load that balance is caused by carbody and mass carried; Reduce the inclination of vehicle body, improve the ride comfort and the road-holding property of vehicle; When vehicle is in operation when running into the road surface projection; Can produce a step pressure surge that successively decreases from the bottom to top in mount pad 6 and the air bag 1 down this moment; The impact of this step pressure wave makes throttle governing plate 5 upwards turn over from the cylindrical baseplane to stick up, and has added the side torus section of throttle governing plate 5 cylindrical baseplanes with following mount pad 6 tops rapidly, has eliminated the pressure reduction of throttle governing plate about in the of 5; The dynamic stiffness that makes air bellow is minimum; Be beneficial to being compressed rapidly of air bellow, reduce of the impact of road surface projection, improve the ride comfort and the road-holding property of vehicle vehicle body.
Claims (8)
1. a weighting material transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, is combined by air bag (1), upper mounting plate (2), upper limit blob of viscose (3), bolt (4), throttle governing plate (5), following mount pad (6), lower limit bearing (7) and weighting material (8); It is characterized in that: lower limit bearing (7) is fixed on down the center of mount pad (6), and lower limit bearing (7) is highly consistent with following mount pad (6); Throttle governing plate (5) by elasticity preferably elastomeric material process, be installed in the center of lower limit bearing (7) through bolt (4); On the end face of throttle governing plate (5), with following mount pad (6) top endoporus and lower limit bearing (7) cylindrical between the circumference that equates of annular flow groove line of centers on be uniformly distributed with several straight-through apertures; Being separated into air bellow with air bag (1) by throttle governing plate (5) is main gas tank, and following mount pad (6) is the composite air spring of accessory air-space; And formed the flow regulating valve of constant restriction by several apertures on the throttle governing plate (5); Its quiet rigidity is regulated: in the assembling process of air bellow; Down the weighting material (8) through calculating or the definite volume of test is loaded in mount pad (6) inside earlier; Owing to load the compressed-air actuated volume that has occupied equal volume in the air bellow advance the weighting material (8) of following mount pad (6) lining; Reduce compressed-air actuated volume, improved the quiet rigidity of air bellow; Otherwise, take out the weighting material (8) that part has been inserted from following mount pad (6) lining, just increased equal volume compressed-air actuated volume, just reduced the quiet rigidity of air bellow relatively; The control process of its dynamic stiffness is: when stationary vehicle with than the pulsation-free running state time; Gas flow is less between air bag (1) and following mount pad (6); It is little that throttle governing plate (5) upper and lower surfaces does not have the pressure reduction differential pressure, and the dynamic stiffness of air bellow adds the inside effective volume and the gaseous tension decision of mount pad (6) down by the volume in the air bag (1); When the dynamic load that is caused by carbody and mass carried increases; Pressure field that will pressure of top-down generation falls progressively in the volume of air bag (1) and following mount pad (6); Pressure gas quickens to flow between air bag (1) and following mount pad (6); The aperture that is arranged on the throttle governing plate (5) can the automatic speed that moves downward according to the dynamic load and the upper mounting plate (2) of increase be heightened the gas flow pressure reduction between air bag (1) and following mount pad (6), heightens the dynamic stiffness of air bellow automatically, the dynamic load that balance is caused by carbody and mass carried; Reduce the inclination of vehicle body, improve the ride comfort and the road-holding property of vehicle; When vehicle is in operation when running into the road surface projection; Can produce a step pressure surge that successively decreases from the bottom to top in mount pad (6) and the air bag (1) down this moment; The impact of this step pressure wave makes throttle governing plate (5) upwards turn over from the cylindrical baseplane to stick up, and has added the side torus section of throttle governing plate (5) cylindrical baseplane with following mount pad (6) top rapidly, has eliminated throttle governing plate (5) pressure reduction up and down; The dynamic stiffness that makes air bellow is minimum; Be beneficial to being compressed rapidly of air bellow, reduce of the impact of road surface projection, improve the ride comfort of vehicle vehicle body.
2. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, it is characterized in that: throttle governing plate (5) by elasticity preferably plastic material process.
3. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, and it is characterized in that: throttle governing plate (5) is processed by elasticity preferred metal material.
4. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, and it is characterized in that: throttle governing plate (5) is made up of a slice.
5. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, and it is characterized in that: throttle governing plate (5) is made up of multi-disc.
6. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, and it is characterized in that: weighting material (8) is the bulk granular thing.
7. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity, and it is characterized in that: weighting material (8) is the annular slice thing.
8. a kind of weighting material according to claim 1 transfers quiet rigidity and pressure reduction to transfer the air bellow of rigidity; It is characterized in that: a little higher than mount pad (6) down of lower limit bearing (7); Its diff-H is by being installed on throttle governing plate (5) the cylindrical baseplane, and the lightweight Gask-O-Seal that thickness equates with diff-H compensates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103173390A CN102367046A (en) | 2011-10-18 | 2011-10-18 | Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103173390A CN102367046A (en) | 2011-10-18 | 2011-10-18 | Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference |
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| CN102367046A true CN102367046A (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103173390A Pending CN102367046A (en) | 2011-10-18 | 2011-10-18 | Air spring with function of regulating static stiffness by filler and regulating dynamic stiffness by pressure difference |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276000A (en) * | 2013-07-05 | 2015-01-14 | F·波尔希名誉工学博士公司 | Method for controlling a torque of a roll stabilizing system and control apparatus |
| CN109808436A (en) * | 2019-02-14 | 2019-05-28 | 浙江科力车辆控制系统有限公司 | Vehicular air suspension |
Citations (6)
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| EP1387110A1 (en) * | 2002-07-27 | 2004-02-04 | Stabilus GmbH | Piston-cylinder unit |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
| CN1858459A (en) * | 2006-04-29 | 2006-11-08 | 杨德君 | Intelligent gas spring |
| JP2011162156A (en) * | 2010-02-15 | 2011-08-25 | Central Japan Railway Co | Air spring device for vehicle |
| CN102506113A (en) * | 2011-10-17 | 2012-06-20 | 杨洁 | Air spring capable of adjusting static stiffness and dynamic stiffness in volume occupation and pressure difference manners |
| CN202641300U (en) * | 2011-10-18 | 2013-01-02 | 杨洁 | Air spring with static stiffness adjusted by filler and dynamic stiffness adjusted through pressure difference |
-
2011
- 2011-10-18 CN CN2011103173390A patent/CN102367046A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387110A1 (en) * | 2002-07-27 | 2004-02-04 | Stabilus GmbH | Piston-cylinder unit |
| JP2004069064A (en) * | 2002-07-27 | 2004-03-04 | Stabilus Gmbh | Cylinder piston device |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
| CN1858459A (en) * | 2006-04-29 | 2006-11-08 | 杨德君 | Intelligent gas spring |
| JP2011162156A (en) * | 2010-02-15 | 2011-08-25 | Central Japan Railway Co | Air spring device for vehicle |
| CN102506113A (en) * | 2011-10-17 | 2012-06-20 | 杨洁 | Air spring capable of adjusting static stiffness and dynamic stiffness in volume occupation and pressure difference manners |
| CN202641300U (en) * | 2011-10-18 | 2013-01-02 | 杨洁 | Air spring with static stiffness adjusted by filler and dynamic stiffness adjusted through pressure difference |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276000A (en) * | 2013-07-05 | 2015-01-14 | F·波尔希名誉工学博士公司 | Method for controlling a torque of a roll stabilizing system and control apparatus |
| CN109808436A (en) * | 2019-02-14 | 2019-05-28 | 浙江科力车辆控制系统有限公司 | Vehicular air suspension |
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Application publication date: 20120307 |