CN202641299U - Air spring capable of adjusting static and dynamic stiffness through capacity occupancy and pressure difference - Google Patents
Air spring capable of adjusting static and dynamic stiffness through capacity occupancy and pressure difference Download PDFInfo
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- CN202641299U CN202641299U CN 201120395459 CN201120395459U CN202641299U CN 202641299 U CN202641299 U CN 202641299U CN 201120395459 CN201120395459 CN 201120395459 CN 201120395459 U CN201120395459 U CN 201120395459U CN 202641299 U CN202641299 U CN 202641299U
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- mount pad
- regulating plate
- piston
- bolt
- air
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Abstract
An air spring capable of adjusting the static and dynamic stiffness through capacity occupancy and pressure difference is composed of an air bag 1, an upper mounting plate 2, an upper limit rubber block 3, a bolt 4, a throttle regulating plate 5, a lower mounting seat 6, a lower limit support 7, a piston 8, a bolt 9 and a nut 10, wherein the lower limit support 7 is fixed onto a base plate of the lower mounting seat 6, and the bottom surface is kept sealed; the middle lower part of the lower limit support 7 is finish machined into a cylinder barrel matched with the piston 8; the piston 8 is installed in an inner bore of the lower limit support 7; the lower limit support 7 is higher than the lower mounting seat 6 by a few millimeters; the throttle regulating plate 5 is made of rubber materials and is installed at the center of the lower limit support 7 through the bolt 4; a plurality of straight through holes are uniformly distributed in the end surface of the throttle regulating plate 5; the air spring is divided by the throttle regulating plate 5 into a composite air spring taking the air bag 1 as the main air chamber and the lower mounting seat 6 as the auxiliary air chamber; and the bolt 9 is propped against the lower flat surface of the piston 8, the lower part of the bolt extends out of the lower flat surface of the lower mounting seat 6, and the bolt 9 can adjust the stroke of the piston 8.
Description
One, technical field:
The utility model relates to the volume that a kind of vehicle air suspension uses and occupies the air bellow of regulating quiet rigidity and pressure reduction regulation moving rigidity.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 vehicle to the damage of 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 development, in order further to improve the stiffness tuning characteristic of air bellow, more be applicable to the requirement that people improve constantly vehicle performance in order to it, people have developed half initiatively and active air suspension.In the active air suspension system for the stiffness tuning of air bellow, 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 by 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 processed by the multiple sensor collection, is regulated the aperture of flow regulating valve by actuating unit, the dynamic stiffness of regulating air bellow.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 large, easily causes system's control inefficacy 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 gears or soft, in, hard three gears.The air spring rigidity control of this stiffness tuning system is to select control by the driver's operation electromagnetic valve, respectively corresponding the large, medium and small of restriction aperture between the major-minor air chamber that is communicated with.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 with desired value, but take desired value as reference, the air bag product that Choice Theory rigidity approaches in existing air bag product is applied in the production reality.Here the quiet rigidity error problem that an air bellow just occurred, certainly, theoretical calculating also has error, and they all need to have a kind of regulative mode to regulate the quiet rigidity of air bellow in actual use, with practical requirement.
Three, summary of the invention:
The purpose of this utility model will be developed a kind of low cost exactly, simple and reliable, responding fast, conveniently regulates the air bellow that quiet rigidity and dynamic stiffness self adaptation pressure reduction are regulated.
Solution of the present utility model is: this volume occupies the air bellow of regulating Static and dynamic stiffness with pressure difference classification, is combined by air bag 1, upper mounting plate 2, upper limit blob of viscose 3, bolt 4, throttling regulating plate 5, lower mount pad 6, lower limit bearing 7, piston 8, bolt 9 and nut 10; Lower limit bearing 7 and lower mount pad 6 be coaxial to be fixed on the base plate of lower mount pad 6, and the bottom surface keeps sealing, and the middle and lower part of lower limit bearing 7 is finish-machined to the cylinder barrel that cooperates with piston 8, and lower limit bearing 7 will exceed several millimeters than lower mount pad 6; Throttling regulating plate 5 by elasticity preferably elastomeric material make, or plastic material and metallic material are made preferably by elasticity; Be installed in the center of lower limit bearing 7 by bolt 4; On the end face of throttling regulating plate 5, with lower mount pad 6 top endoporus and lower limit bearing 7 cylindricals between the circumference that equates of annular circulation groove line of centers on uniform several straight-through apertures; Piston 8 is installed in the endoporus of lower limit bearing 7 bottoms; Bolt 9 is installed on the lower mount pad 6, and the Qi Ding plane heads on the lower plane of piston 8, and the lower plane of lower mount pad 6 is stretched out in the bottom, and leaves the installation thickness of nut 10 and the adjustment travel of piston 8; Nut 10 is installed in the baseplane locking of bolt 9 up and down mount pads 6, in case bolt 9 is loosening.By throttling regulating plate 5 air bellow has been separated into take air bag 1 as main gas tank, lower mount pad 6 is the composite air spring of accessory air-space; And having formed constant restriction by several apertures on the throttling regulating plate 5, the side torus section on throttling regulating plate 5 cylindrical baseplanes and plane, top, lower mount pad 6 tops has formed the composite throttling valve of settable orifice; Throttling regulating plate 5 can be comprised of polylith.Its quiet stiffness tuning method is: unclamp nut 10, turn bolt 9 and make piston 8 upwards mobile in lower limit bearing 7, the volume that piston moves up has occupied the compressed-air actuated volume of equal volume, has improved the quiet rigidity of air bellow; Otherwise, oppositely turn bolt 9, piston 8 can move down under the effect of air pressure thereupon, has increased the compressed-air actuated volume of equal volume, with regard to relative reduce the quiet rigidity of air bellow.The control process of its dynamic stiffness is: when stationary vehicle with than the pulsation-free running state time, throttling regulating plate 5 upper and lower surfaces are little without the pressure reduction differential pressure, elastic equilibrium by its material, the settable orifice that the side torus section on throttling regulating plate 5 cylindrical baseplanes and plane, top, lower mount pad 6 tops forms is unchanged, air bag 1 and 6 air-flows of lower mount pad are unobstructed, and the dynamic stiffness of air bellow is determined by internal capacity and the air pressure that air bag 1 internal volume adds lower mount pad 6; 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 lower mount pad 6, because the differential pressure action that increases on the lower plane on the throttling regulating plate 5, so that throttling regulating plate 5 cylindrical baseplanes are pressed close to the plane, top, top of lower mount pad 6 downwards, progressively turn down and close the settable orifice of the side torus section on plane, throttling regulating plate 5 cylindrical baseplanes and lower mount pad 6 tops top, finished the dynamic stiffness of the air bellow under the more low-level Under Dynamic Load and regulated; Only stay several aperture communicated air bags 1 and lower mount pad 6 of being arranged on the throttling regulating plate 5, the flow area of air-flow greatly reduces, the speed that its can be automatically moves downward according to the dynamic load that continues to increase and upper mounting plate 2 is regulated the gas flow pressure reduction of 6 of air bag 1 and lower mount pads, the dynamic stiffness of further automatic raising air spring, the dynamic load that balance is caused by carbody and mass carried, reduce the inclination of vehicle body, improve ride comfort and the road-holding property of vehicle; When vehicle is in operation when running into the road surface projection, this moment can be at lower mount pad 6 and Step Pressure shock wave that successively decreases from the bottom to top of air bag 1 interior generation, the impact of this Step Pressure ripple is so that throttling regulating plate 5 upwards turns over from the cylindrical baseplane sticks up, strengthened rapidly the side torus section on throttling regulating plate 5 cylindrical baseplanes and lower mount pad 6 tops, eliminated the pressure reduction of throttling regulating plate about in the of 5, the dynamic stiffness that makes air bellow is minimum, be beneficial to the compressed rapidly of air bellow, reduce the road surface projection to the impact of vehicle body, improve the ride comfort of vehicle.
The utility model is for the Typical Structure Design 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 throttling regulating plate 5 according to the performance perameter of former air bellow, and at lower mount pad 6 upper and lower spacing bearing 7 interior installation fixed pistons 8, bolt 9 and nut 10, original passive type air bellow upgrading can be become quiet rigidity adjustable, the stiffness variable air bellow that the dynamic stiffness self adaptation is regulated.Be conducive to reduce the inclination of vehicle body, improve ride comfort and the road-holding property of vehicle; Be conducive to reduce promoting the use of of cost and air suspension.
Control signal of the present utility model is directly taken from the pressure in the air bellow, and control signal and regulating command are integrated, and effect is rapid, reliable, and without the response time lag, 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 by different major-minor air chambers is set and the throttling regulating 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 acquisition processing system and the actuating unit of signal, need not ECU and control software, cost greatly descends; Because control command of the present utility model is the pressure reduction of major-minor air chamber, the rigidity of air bellow changes and automatically adjusting 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 structure principle chart of the present utility model.
Five, the specific embodiment:
The specific embodiment of the present utility model is: quiet stiffness tuning: unclamp nut 10, turning bolt 9 makes piston 8 upwards mobile in lower limit bearing 7, the volume that piston moves up has occupied the compressed-air actuated volume of equal volume, has improved the quiet rigidity of air bellow; Otherwise, oppositely turn bolt 9, piston 8 can move down under the effect of air pressure thereupon, has increased the compressed-air actuated volume of equal volume, with regard to relative reduce the quiet rigidity of air bellow.Dynamic stiffness is regulated: when stationary vehicle with than the pulsation-free running state time, although by throttling regulating plate 5 inner space of air bag 1 and lower mount pad 6 has been separated into the major-minor air chamber, but because the open area of the cutoff port on the throttling regulating plate 5, adding that open area that interplanar side torus section is communicated with is pushed up on throttling regulating plate 5 cylindrical baseplanes and lower mount pad 6 tops can be more than or equal to the open area of the circular groove of the endoporus on lower mount pad 6 tops and lower limit bearing 7 cylindricals, the inside of lower mount pad 6 and air bag 1 be interior to have kept good circulation and without the pressure reduction state, and the rigidity of air bellow adds up and down by the volume of air bellow inner air pressure and air bag 1 that the volume of mount pad 6 determines.The dynamic stiffness of air bellow is minimum; When the dynamic load that is caused by carbody and mass carried increases, this Under Dynamic Load is on upper mounting plate 2, the pressurized air in the pressurized air spring from top to bottom, compressing gasbag 1, will produce the pressure field that a top-down pressure falls progressively this moment in air bellow, throttling regulating plate 5 overcomes elastic properties of materials under the effect of pressure reduction up and down, make throttling regulating plate 5 cylindrical baseplanes be adjacent to plane on the lower mount pad 6 downwards, progressively turn down and close the side torus section on plane on throttling regulating plate 5 cylindrical baseplanes and the lower mount pad 6, only stayed on the throttling regulating plate 5, be communicated with vertical several apertures that communicate of annular circulation groove on lower mount pad 6 tops, this air bellow is finished the process that its first dynamic stiffness is regulated continuously automatically, then take on throttling action by several apertures on the throttling regulating plate 5, automatically the speed that moves downward according to size and the upper mounting plate 2 of dynamic load is regulated the gas flow pressure reduction of 6 of air bag 1 and lower mount pads, thereby automatically regulate the dynamic stiffness of air bellow, the dynamic load that balance is caused by carbody and mass carried, reduce the inclination of vehicle body, improve ride comfort and the road-holding property of vehicle.When vehicle is in operation when running into the road surface projection, wheel promotes vehicle bridge and promotes from bottom to top upwards pressurized air spring upward movement of lower mount pad 6, this moment can be at inner space and Step Pressure shock wave that falls progressively from the bottom to top of air bag 1 interior generation of lower mount pad 6, the impact of this Step Pressure ripple is so that throttling regulating plate 5 upwards turns over from the cylindrical lower plane sticks up, strengthened rapidly the side torus section of throttling regulating plate 5 cylindricals bottom with lower mount pad 6 tops, further lower or eliminated the pressure reduction of throttling regulating plate about in the of 5, the dynamic stiffness that makes air bellow is minimum, be beneficial to the compressed rapidly of air bellow, reduce the road surface projection to the impact of vehicle body, improve ride comfort and the road-holding property of vehicle.
Claims (1)
1. a volume occupies the air bellow of regulating Static and dynamic stiffness with pressure difference classification, is combined by air bag (1), upper mounting plate (2), upper limit blob of viscose (3), bolt (4), throttling regulating plate (5), lower mount pad (6), lower limit bearing (7), piston (8), bolt (9) and nut (10); It is characterized in that: lower limit bearing (7) and lower mount pad (6) be coaxial to be fixed on the base plate of lower mount pad (6), and the bottom surface keeps sealing, the middle and lower part of lower limit bearing (7) is finish-machined to the cylinder barrel that cooperates with piston (8), and piston (8) is installed in the endoporus of lower limit bearing (7); Lower limit bearing (7) exceeds several millimeters than lower mount pad (6); Throttling regulating plate (5) is made by elastomeric material or plastic material or metallic material, is installed in the center of lower limit bearing (7) by bolt (4); On the end face of throttling regulating plate (5), with lower mount pad (6) top endoporus and lower limit bearing (7) cylindrical between the circumference that equates of annular circulation groove line of centers on uniform several straight-through apertures; By throttling regulating plate (5) air bellow has been separated into take air bag (1) as main gas tank, lower mount pad (6) is the composite air spring of accessory air-space; And having formed constant restriction by several apertures on the throttling regulating plate (5), the side torus section on throttling regulating plate (5) cylindrical baseplane and plane, top, lower mount pad (6) top has formed the composite throttling valve of settable orifice; Bolt (9) is installed on the lower mount pad (6), and the Qi Ding plane heads on the lower plane of piston (8), and the lower plane of lower mount pad (6) is stretched out in the bottom, and leaves the installation thickness of nut (10) and the adjustment travel of piston (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120395459 CN202641299U (en) | 2011-10-17 | 2011-10-17 | Air spring capable of adjusting static and dynamic stiffness through capacity occupancy and pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120395459 CN202641299U (en) | 2011-10-17 | 2011-10-17 | Air spring capable of adjusting static and dynamic stiffness through capacity occupancy and pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202641299U true CN202641299U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120395459 Expired - Fee Related CN202641299U (en) | 2011-10-17 | 2011-10-17 | Air spring capable of adjusting static and dynamic stiffness through capacity occupancy and pressure difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202641299U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506112A (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 classification manners |
| CN108749506A (en) * | 2018-07-04 | 2018-11-06 | 湖南工学院 | A kind of interconnection type variable volume air suspension and its control method |
| CN114962522A (en) * | 2022-04-11 | 2022-08-30 | 中国第一汽车股份有限公司 | Variable-rigidity air spring |
-
2011
- 2011-10-17 CN CN 201120395459 patent/CN202641299U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506112A (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 classification manners |
| CN108749506A (en) * | 2018-07-04 | 2018-11-06 | 湖南工学院 | A kind of interconnection type variable volume air suspension and its control method |
| CN108749506B (en) * | 2018-07-04 | 2019-03-26 | 湖南工学院 | A kind of interconnection type variable volume air suspension and its control method |
| CN114962522A (en) * | 2022-04-11 | 2022-08-30 | 中国第一汽车股份有限公司 | Variable-rigidity air spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20141017 |
|
| EXPY | Termination of patent right or utility model |