CN102384204A - Air spring with dynamic stiffness adjusted by floating throttle plate - Google Patents
Air spring with dynamic stiffness adjusted by floating throttle plate Download PDFInfo
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- CN102384204A CN102384204A CN2011103150789A CN201110315078A CN102384204A CN 102384204 A CN102384204 A CN 102384204A CN 2011103150789 A CN2011103150789 A CN 2011103150789A CN 201110315078 A CN201110315078 A CN 201110315078A CN 102384204 A CN102384204 A CN 102384204A
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- regulator plate
- fitting seat
- pneumatic spring
- throttling regulator
- dynamic stiffness
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Abstract
An air spring in the modern automotive suspension system plays important roles in the improvement of the smoothness and control stability of an automobile, and road and goods protection. In order to effectively adjust the dynamic stiffness of the air spring, the air spring is realized by mutually connecting a primary air chamber and a secondary air chamber and by changing a throttle valve on a channel. In the traditional air spring, control signals with stiffness adjusting are collected by multi branches of sensors, an action command can be delivered after the control signals are delivered to a computer to be processed, and then the stiffness of the air spring can be adjusted. However, in the control mode, the response time-lag is lightly large, and the cost is high. The invention discloses the novel air spring capable of adjusting the stiffness with self-adaption differential pressure, which aims at solving the difficult problem. The throttle differential pressure in the channels of the primary chamber and the secondary chamber is controlled by utilizing a pressure signal in an air bag, thus the stepless stiffness adjustment can be reached; and the impact of a lug to an automobile body can be weakened through controlling the throttle valve by utilizing the reversed impact differential pressure. The invention has the advantages that the structure is simple, the response is rapid and reliable, the cost is low, and the prior art is greatly transcended.
Description
One, technical field:
The present invention relates to the pneumatic spring that a kind of vehicle air suspension is used by the Rectifier plate adjusting dynamic stiffness of floating.This pneumatic spring especially is adapted to carrying big bus, city bus big bus, goods stock, also is adapted to rail traffic vehicles, special vehicle and limousine.
Two, background technique:
In order to improve ride of vehicle, improve travelling comfort and the control stability taken, 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 requirement that people improve constantly vehicle performance in order to it, people have developed half active and active air suspension.Rigidity for pneumatic spring in the active air suspension system is regulated; 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 dynamic stiffness that changes pneumatic spring.The control signal of this dynamic stiffness regulating system is delivered and is sent control command after microprocessor is handled, by the aperture that actuator regulates throttle valve, the dynamic stiffness of regulating pneumatic spring by the multiple sensor collection.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, often causes system's control fails and reverse effect occurs.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.The rigidity of pneumatic spring is artificially to select according to road conditions.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, the pneumatic spring that dynamic stiffness self adaption simple and reliable, responding fast is regulated.
Solution of the present invention is: a kind of pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating is combined by air bag 1, upper mounting plate 2, upper limit blob of viscose 3, throttling regulator plate 4, following fitting seat 5, lower limit bearing 6; Lower limit bearing 6 keeps coaxial installing and fixing with following fitting seat 5, and lower limit bearing 6 is highly consistent with following fitting seat 5, also can be higher slightly; Throttling regulator plate 4 by elasticity preferably rubber material process, or plastic material and metallic material are processed preferably by elasticity; The external diameter of throttling regulator plate 4 is more a little bit smaller slightly at the internal diameter at following fitting seat 5 equal height positions than air bag 1, directly is placed on the plane, top of lower limit bearing 6; Also can the external diameter of throttling regulator plate 4 be reduced; And big highly slightly locating stud of heart fixed-site therein; Be a bit larger tham the hole of this locating stud at lower limit bearing 6 center drills one, be placed on throttling regulator plate 4 on the plane, top of lower limit bearing 6 with the locating stud radial location; On the end face of throttling regulator plate 4, with following fitting seat 5 top endoporus and lower limit bearing 6 cylindricals between the circumference that equates of annular flow groove center line on be uniformly distributed with several straight-through apertures; At the cylindrical near throttling regulator plate 4, concentric with cylindrical, diameter is slightly smaller than on the circumference that outside diameter deducts a clear opening diameter and has been uniformly distributed with some straight-through apertures again; Being separated into pneumatic spring with air bag 1 by throttling regulator plate 4 is main gas tank, and following fitting seat 5 is the composite air spring of accessory air-space; And by the restriction of the throttle valve of the dynamic stiffness adjusting of the required adjusting pneumatic spring of dynamic load that leans on straight-through aperture on the center circumferential to form on the throttling regulator plate 4 to bear vehicle body and mass carried to cause; All clear openings have been formed the restriction of the dynamic stiffness adjusting throttle valve of the required adjusting pneumatic spring of dynamic load of answering the initiation of road pavement step load on the throttling regulator plate 4.Its dynamic stiffness adjustment process is: during when stationary vehicle with in running state more stably; Vehicle body moves up and down not quite; The air-flow of inner ring throttle orifice of flowing through on the throttling regulator plate 4 is few; It is little that its upper and lower surfaces does not have the pressure reduction differential pressure, and throttling regulator plate 4 is adjacent to the down upper plane of fitting seat 5 and lower limit bearing 6 under a small amount of differential pressure action on deadweight and its upper and lower surfaces, lean on several aperture communicated air bags 1 and following fitting seats 5 on the center circumferential by it; On the then compacted airbag wall that is attached to attached to following fitting seat 5 top wall bodies of the clear opening that is uniformly distributed with on the outer circumference, the inner volume with following fitting seat 5 does not communicate; The pressure decision of the internal capacity of fitting seat 5 and gas under the dynamic stiffness of pneumatic spring is added 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 cavity volume of air bag 1 and following fitting seat 5; Gas quickens to flow through, and the inner ring throttle orifice flows to fitting seat 5 down from air bag 1 on the throttling regulator plate 4; The gas flow pressure reduction that speed regulation air bag 1 that the inner ring throttle orifice can be automatically moves downward according to the dynamic load that increases and upper mounting plate 2 on the throttling regulator plate 4 and following fitting seat are 5 is heightened the dynamic stiffness of pneumatic spring, the dynamic load that balance is caused by carbody and mass carried automatically; Reduce the side-sway of vehicle body, improve the smoothness and the control stability 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 this moment in following fitting seat 5 and air bag 1, the impact of this step pressure wave makes throttling regulator plate 4 leave from the upper surface attached to the upper and lower spacing bearing 6 of airbag wall of following fitting seat 5 top wall bodies, and the straight-through aperture on it all is opened; Strengthened the air-flow path on the throttling regulator plate 4 rapidly; Eliminated the pressure reduction of throttling regulator plate about in the of 4, the dynamic stiffness that makes pneumatic spring is minimum, is beneficial to being compressed rapidly of pneumatic spring; Reduce of the impact of road surface projection, improve the smoothness of vehicle vehicle body.When vehicle is crossed the road surface projection, the step pressure wave disappears, and throttling regulator plate 4 falls back to rapidly on the upper surface attached to the upper and lower spacing bearing 6 of airbag wall of fitting seat 5 top wall bodies down, and the dynamic stiffness of pneumatic spring returns to original state.
The present invention be directed to the typical structure design of existing pneumatic spring; It need not the structure of existing pneumatic spring is done any change; Only need to design and produce out a throttling regulator plate 4 according to the performance parameter of former pneumatic spring; Also polylith combination can become the stiffness variable pneumatic spring that the dynamic stiffness self adaption is regulated with original passive type pneumatic spring upgrading.Help reducing the inclination of vehicle body, improve the smoothness and the control stability of vehicle; Help reducing cost and the promoting the use of of air suspension.
Control signal of the present invention is directly taken from the pressure in the pneumatic spring, 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 pneumatic spring greatly improves; After having guaranteed the low vibration frequency characteristic of pneumatic spring, the throttle orifice that number does not wait on volume through different major-minor air chambers is set and the throttling regulator plate 4 can improve the load-deflection curve of pneumatic spring effectively.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 pressure reduction of major-minor air chamber, the rigidity of pneumatic spring is regulated with the variation in pressure of major-minor air chamber automatically, regulates smooth and easy continuous.
The adjusting load-deflection curve of pneumatic spring is more reasonable and controlled.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Four, embodiment:
Embodiment of the present invention is: during when stationary vehicle with in running state more stably; Vehicle body moves up and down not quite; The air-flow of inner ring throttle orifice of flowing through on the throttling regulator plate 4 is few; It is little that its upper and lower surfaces does not have the pressure reduction differential pressure, and throttling regulator plate 4 is adjacent to the upper plane attached to the upper and lower spacing bearing 6 of airbag wall of following fitting seat 5 top wall bodies under a small amount of differential pressure action on deadweight and its upper and lower surfaces, leans on several aperture communicated air bags 1 and following fitting seats 5 at center by it; On the then compacted airbag wall that is attached to attached to following fitting seat 5 top wall bodies of the clear opening that is uniformly distributed with on the outer circumference, the inner volume with following fitting seat 5 does not communicate; The pressure decision of the internal capacity of fitting seat 5 and gas under the dynamic stiffness of pneumatic spring is added 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 cavity volume of air bag 1 and following fitting seat 5; Gas quickens to flow to fitting seat 5 down by inner ring throttle orifice on the throttling regulator plate 4 from air bag 1; The gas flow pressure reduction that speed regulation air bag 1 that the inner ring throttle orifice can be automatically moves downward according to the dynamic load that increases and upper mounting plate 2 on the throttling regulator plate 4 and following fitting seat are 5 is heightened the dynamic stiffness of pneumatic spring, the dynamic load that balance is caused by carbody and mass carried automatically; Reduce the side-sway of vehicle body, improve the smoothness and the control stability 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 this moment in the cavity volume of following fitting seat 5 and air bag 1, the impact of this step pressure wave makes throttling regulator plate 4 leave from the upper surface attached to the upper and lower spacing bearing 6 of airbag wall of fitting seat 5 top wall bodies, and the straight-through aperture on it all is opened; Strengthened the air-flow path on the throttling regulator plate 4 rapidly; Eliminated the pressure reduction of throttling regulator plate about in the of 4, the dynamic stiffness that makes pneumatic spring is minimum, is beneficial to being compressed rapidly of pneumatic spring; Reduce of the impact of road surface projection, improve the smoothness of vehicle vehicle body.When vehicle is crossed the road surface projection, the step pressure wave disappears, and throttling regulator plate 4 falls back to rapidly on the upper surface attached to the upper and lower spacing bearing 6 of airbag wall of fitting seat 5 top wall bodies down, and the dynamic stiffness of pneumatic spring returns to original state.
Claims (7)
1. the pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating is combined by air bag (1), upper mounting plate (2), upper limit blob of viscose (3), throttling regulator plate (4), following fitting seat (5), lower limit bearing (6); It is characterized in that: lower limit bearing (6) and coaxial the installing and fixing of following fitting seat (5); Lower limit bearing (6) is highly consistent with following fitting seat (5); Throttling regulator plate (4) by elasticity preferably rubber material process; The external diameter of throttling regulator plate (4) is more a little bit smaller slightly at the internal diameter at following fitting seat (5) equal height position than air bag (1), directly is placed on the top plan of lower limit bearing (6); On the end face of throttling regulator plate (4), with following fitting seat (5) top endoporus and lower limit bearing (6) cylindrical between the circumference that equates of annular flow groove center line on be uniformly distributed with several straight-through apertures; At the cylindrical near throttling regulator plate (4), concentric with cylindrical, diameter is slightly smaller than on the circumference that outside diameter deducts a clear opening diameter and has been uniformly distributed with some straight-through apertures again; Being separated into pneumatic spring with air bag (1) by throttling regulator plate (4) is main gas tank, and following fitting seat (5) is the composite air spring of accessory air-space; And go up to lean on the straight-through aperture of center circumferential to form to bear the restriction of throttle valve of the dynamic stiffness adjusting of the required adjusting pneumatic spring of dynamic load that vehicle body and mass carried cause by throttling regulator plate (4); Throttling regulator plate (4) is gone up all clear openings and has been formed the restriction that the dynamic stiffness of the required adjusting pneumatic spring of dynamic load of answering the initiation of road pavement step load is regulated throttle valve; Its dynamic stiffness adjustment process is: during when stationary vehicle with in running state more stably; Vehicle body moves up and down not quite; The air-flow of the last inner ring throttle orifice of the throttling regulator plate (4) of flowing through is few; It is little that its upper and lower surfaces does not have the pressure reduction differential pressure; Throttling regulator plate (4) is on the upper plane that is adjacent under a small amount of differential pressure action on deadweight and its upper and lower surfaces attached to the upper and lower spacing bearing of airbag wall (6) that descends fitting seat (5) top wall body; Lean on several aperture communicated air bags (1) and following fitting seat (5) at center by it, on the then compacted airbag wall that is attached to attached to following fitting seat (5) top wall body of the clear opening that is uniformly distributed with on the outer circumference, the inner volume with following fitting seat (5) does not communicate; The pressure decision of the internal capacity of fitting seat (5) and gas under the dynamic stiffness of pneumatic spring is added 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 fitting seat (5); Gas quickens to flow through the last inner ring throttle orifice of throttling regulator plate (4) from the following fitting seat (5) of air bag (1) flow direction; Throttling regulator plate (4) is gone up speed regulation air bag (1) that the inner ring throttle orifice can be automatically moves downward according to the dynamic load that increases and upper mounting plate (2) and the gas flow pressure reduction between following fitting seat (5), heightens the dynamic stiffness of pneumatic spring automatically, the dynamic load that balance is caused by carbody and mass carried; Reduce the side-sway of vehicle body, improve the smoothness and the control stability 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 this moment in following fitting seat (5) and air bag (1), the impact of this step pressure wave makes throttling regulator plate (4) leave from the upper surface attached to the upper and lower spacing bearing of airbag wall (6) of following fitting seat (5) top wall body, and the straight-through aperture on it all is opened; Strengthened the air-flow path on the throttling regulator plate (4) rapidly; Eliminated throttling regulator plate (4) pressure reduction up and down, the dynamic stiffness that makes pneumatic spring is minimum, is beneficial to being compressed rapidly of pneumatic spring; Reduce of the impact of road surface projection, improve the smoothness of vehicle vehicle body; When vehicle is crossed the road surface projection, the step pressure wave disappears, and throttling regulator plate (4) falls back to rapidly on the upper surface attached to the upper and lower spacing bearing of airbag wall (6) of fitting seat (5) top wall body down, and the dynamic stiffness of pneumatic spring returns to original state.
2. according to claim 1ly a kind ofly regulate the pneumatic spring of dynamic stiffness, it is characterized in that by the Rectifier plate that floats: throttling regulator plate (4) by elasticity preferably plastic material process.
3. a kind of pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating according to claim 1, it is characterized in that: throttling regulator plate (4) is processed by elasticity preferred metal material.
4. a kind of pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating according to claim 1, it is characterized in that: throttling regulator plate (4) is made up of a slice.
5. a kind of pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating according to claim 1, it is characterized in that: throttling regulator plate (4) is made up of multi-disc.
6. a kind of pneumatic spring by the Rectifier plate adjusting dynamic stiffness of floating according to claim 1, it is characterized in that: lower limit bearing (6) is higher slightly than following fitting seat (5).
7. a kind of pneumatic spring according to claim 1 by the Rectifier plate adjusting dynamic stiffness of floating; It is characterized in that: the external diameter that reduces throttling regulator plate (4); And a locating stud is set in the central position of throttling regulator plate (4); The hole that a diameter is a bit larger tham locating stud is bored in central position at lower limit bearing (6), and throttling regulator plate (4) is placed on the plane, top of lower limit bearing (6) with the locating stud radial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103150789A CN102384204A (en) | 2011-10-17 | 2011-10-17 | Air spring with dynamic stiffness adjusted by floating throttle plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103150789A CN102384204A (en) | 2011-10-17 | 2011-10-17 | Air spring with dynamic stiffness adjusted by floating throttle plate |
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| Publication Number | Publication Date |
|---|---|
| CN102384204A true CN102384204A (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103150789A Pending CN102384204A (en) | 2011-10-17 | 2011-10-17 | Air spring with dynamic stiffness adjusted by floating throttle plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19733281A1 (en) * | 1997-08-01 | 1999-02-18 | Bpw Bergische Achsen Kg | Pneumatic spring for motor vehicles e.g. use with shock absorbers |
| US5934652A (en) * | 1998-05-28 | 1999-08-10 | The Goodyear Tire & Rubber Company | Air spring bumper and method of mounting |
| US6644632B1 (en) * | 1997-12-18 | 2003-11-11 | Volvo Lastavagnat Ab | Air spring device for load-carrying vehicles |
| CN101101030A (en) * | 2007-06-01 | 2008-01-09 | 成都飞机工业（集团）有限责任公司 | Air spring with stop and limit device |
| CN101550980A (en) * | 2009-02-20 | 2009-10-07 | 山东美晨科技股份有限公司 | Chassis air spring |
| CN202463507U (en) * | 2011-10-17 | 2012-10-03 | 杨洁 | Air spring adjusting dynamic stiffness by floating throttle plate |
-
2011
- 2011-10-17 CN CN2011103150789A patent/CN102384204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19733281A1 (en) * | 1997-08-01 | 1999-02-18 | Bpw Bergische Achsen Kg | Pneumatic spring for motor vehicles e.g. use with shock absorbers |
| US6644632B1 (en) * | 1997-12-18 | 2003-11-11 | Volvo Lastavagnat Ab | Air spring device for load-carrying vehicles |
| US5934652A (en) * | 1998-05-28 | 1999-08-10 | The Goodyear Tire & Rubber Company | Air spring bumper and method of mounting |
| CN101101030A (en) * | 2007-06-01 | 2008-01-09 | 成都飞机工业（集团）有限责任公司 | Air spring with stop and limit device |
| CN101550980A (en) * | 2009-02-20 | 2009-10-07 | 山东美晨科技股份有限公司 | Chassis air spring |
| CN202463507U (en) * | 2011-10-17 | 2012-10-03 | 杨洁 | Air spring adjusting dynamic stiffness by floating throttle plate |
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Application publication date: 20120321 |