CN102330787A - Air spring of filling and displacement static and dynamic rigidity combined regulation - Google Patents
Air spring of filling and displacement static and dynamic rigidity combined regulation Download PDFInfo
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- CN102330787A CN102330787A CN201110168396A CN201110168396A CN102330787A CN 102330787 A CN102330787 A CN 102330787A CN 201110168396 A CN201110168396 A CN 201110168396A CN 201110168396 A CN201110168396 A CN 201110168396A CN 102330787 A CN102330787 A CN 102330787A
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Abstract
The invention discloses an air spring in an automobile suspension system which is very important for improving the smoothness, comfortableness, road protection, and cargo and overloading restriction. For improving the rigidity property of the air spring, the mode that a main air chamber and an auxiliary chamber are connected, the differential pressure between the main air chamber and the auxiliary air chamber in air flow through regulating throttling openings on a passage is utilized to achieve. The volumes of the air chambers are not changed in the regulation process by utilizing a rigidity regulating system, thus the rigidity regulation difficulty is relatively great; during the rigidity regulation process of the air spring, people neglect that the static rigidity regulation is required because of the difference of the rigidity of selectable standard serial air bags and the rigidity required by the concrete automobile model, while the difficulty of dynamic rigidity regulation is always caused by the mismatching of the static rigidity of the air bags; and in the passive air suspension system, the important reason for the severe side way in the driving of the automobiles is that the static rigidity of the air bags is not matched. According to the invention, the air spring of the filling and displacement static and dynamic rigidity combined regulation is researched aiming at the problem.
Description
One, technical field:
The present invention relates to volume and the displacement quiet dynamic rate combination regulating system of a kind of vehicle air suspension with pneumatic spring.The pneumatic spring that this quiet dynamic rate combination is regulated 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 special vehicle and limousine.
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 active air suspension system; 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 to change near the dynamic rate of the pneumatic spring equilibrium position.The control signal of this dynamic rate regulating system is by the multiple sensor collection; Deliver and send control command after microprocessor is handled; By the aperture that actuator regulates throttle valve, the pressure reduction when regulating gas flow between the major-minor air chamber is regulated the dynamic rate of pneumatic spring.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.The control of rigidity segmented is generally adopted in control at the dynamic rate of the airsuspension system air spring of semi-active suspension, with the dynamic rate of pneumatic spring be divided into soft, hard two retainings or soft, in, hard three retainings.The pneumatic spring dynamic rate control of this dynamic rate 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 dynamic rate is not continuous.The dynamic rate of pneumatic spring is artificial the selection.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, the quiet dynamic rate combination regulating system of the pneumatic spring of simple and reliable, responding fast.
Solution of the present invention is: the pneumatic spring that the quiet dynamic rate combination of this filling and displacement is regulated is combined by air bag 1, upper mounting plate 2, accessory air-space 3, removable cover 4, spring 5, push rod 6, lower installation board 7, packing 8; Central position at the inner plane of upper mounting plate 2 installs and fixes push rod 6; On the central position on plane on the lower installation board 7; Fixing accessory air-space 3 that is separated into several sub-air chamber, the outside suit of accessory air-space 3 internal diameter and accessory air-space 3 external diameters removable cover 4 movingly, the last cover cavity of the top of accessory air-space 3 and removable cover 4 is equipped with spring 5; Under the effect of spring 5, removable cover 4 contacts and moves up and down with it with push rod 6 all the time.
The static stiffness regulating method of this pneumatic spring is: during the pneumatic spring assembling; Before in the end installing mounting plate 2; By the packing 8 of confirming volume through the last mount inlet wadding warp calculated in advance of air bag 1; Packing 8 has occupied the volume of the foot of air bag 1, has quite reduced to hold in the air bag compressed-air actuated same volume, and the static stiffness of pneumatic spring increases; On the contrary, take out the partially filled thing of having inserted 8 by the last mount inlet of air bag 1,, then the static stiffness of pneumatic spring reduces.When vehicle is in static setting height; Removable cover 4 is minimum with the suit axial length of accessory air-space 3; The radially throttle orifice of each sub-air chamber of accessory air-space 3 all communicates with air bag 1, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the air actual volume in the main gas tank 1 in the main gas tank.The dynamic rate of this pneumatic spring is regulated: when vehicle dynamic load at the volley increases; Upper mounting plate 2 moves down under the effect of dynamic load; Push rod 6 can move down thereupon, promotes removable cover 4 and moves down, turn down successively accessory air-space 3 each sub-air chamber restriction with close each sub-air chamber of accessory air-space 3; Pressure reduction and the actual volume that reduces in the air bag 1 when improving gas flow between the major-minor air chamber; Improve the rigidity of pneumatic spring, the dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
The present invention is integrated control signal and regulating command, and effect rapidly, does not reliably have the response time lag, and the rigidity regulating power of pneumatic spring greatly improves; Through the increase and decrease of packing, the static stiffness of conveniently adjusted pneumatic spring is through being provided with the load-deflection curve that sub-air chamber that not isometric sub-air chamber and number do not wait can improve pneumatic spring effectively.Because control command of the present invention is the displacement of upper mounting plate 2; Need not to have the acquisition processing system and the actuator of signal again, need not ECU and control software, cost greatly descends; The dynamic rate of pneumatic spring is regulated with the change in displacement of upper mounting plate 2 automatically, regulates smooth and easy continuous.
But push rod 6 of the present invention is designed to the composite structure form of height up and down, and then the equilibrium position to its dynamic rate is provided with the adjustment link, helps the accurate adjustment of vehicle chassis performance.
Four, description of drawings:
Accompanying drawing 1 is a system architecture schematic diagram of the present invention.
Five, embodiment:
Embodiment of the present invention is: the static stiffness of this pneumatic spring is regulated: during the pneumatic spring assembling; Before in the end installing mounting plate 2; By the packing 8 of confirming volume through the last mount inlet wadding warp calculated in advance of air bag 1; Packing 8 has occupied the volume of the foot of air bag 1, has quite reduced to hold compressed-air actuated same volume in the air bag 1, and the static stiffness of pneumatic spring increases; On the contrary, by taking out the partially filled thing of having inserted 8 by last mount inlet through air bag 1,, then the static stiffness of pneumatic spring reduces.When vehicle is in static setting height; Removable cover 4 is minimum with the suit axial length of accessory air-space 3; The radially throttle orifice of each sub-air chamber of accessory air-space 3 all communicates with air bag 1, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the air actual volume in the air bag 1 in the air bag 1.The dynamic rate of this pneumatic spring is regulated: when vehicle dynamic load at the volley increases; Upper mounting plate 2 moves down under the effect of dynamic load; Push rod 6 can move down thereupon, promotes removable cover 4 and moves down, turn down successively accessory air-space 3 each sub-air chamber restriction with close each sub-air chamber of accessory air-space 3; Pressure reduction during through raising air bag 1 and 3 gas flow of accessory air-space and the actual volume that reduces in the air bag 1; Improve the rigidity of pneumatic spring, the dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
Claims (3)
1. the pneumatic spring regulated of the quiet dynamic rate combination of filling and displacement is combined by air bag (1), upper mounting plate (2), accessory air-space (3), removable cover (4), spring (5), push rod (6), lower installation board (7), packing (8); It is characterized in that: the central position at the inner plane of upper mounting plate (2) installs and fixes push rod (6); On the central position on the last plane of lower installation board (7); Fixing accessory air-space (3) that is separated into several sub-air chamber; The outside suit of accessory air-space (3) internal diameter and accessory air-space (3) external diameter removable cover (4) movingly; The last cover cavity of the top of accessory air-space (3) and removable cover (4) is equipped with spring (5), and under the effect of spring (5), removable cover (4) contacts and moves up and down with it with push rod (6) all the time; The static stiffness of this pneumatic spring is regulated: during the assembling of assembling pneumatic spring; It is preceding in the end to install mounting plate (2); Insert the packing (8) of confirming volume through calculating by the last mount inlet of air bag (1); Because packing (8) has occupied the volume of the foot of air bag (1), has quite reduced to hold compressed-air actuated same volume in the air bag (1), the static stiffness of pneumatic spring increases; On the contrary, the last mount inlet by air bag (1) takes out the packing (8) that part has been inserted, the then static stiffness of pneumatic spring reduction; When vehicle is in static setting height; Removable cover (4) is minimum with the axial suit length of accessory air-space (3); The radially throttle orifice of each sub-air chamber of accessory air-space (3) all communicates with air bag (1), and the rigidity of pneumatic spring is determined by inflation pressure and the air actual volume in the air bag (1) according to load request in the air bag (1); The dynamic rate of this pneumatic spring is regulated: when vehicle dynamic load at the volley increases; The upper mounting plate (2) of air bag (1) moves down under the effect of dynamic load; Push rod (6) can move down thereupon, promotes removable cover (4) and moves down, turn down successively accessory air-space (3) each sub-air chamber restriction with close each sub-air chamber of accessory air-space (3); The pressure reduction actual volume interior when improving gas flow between air bag (1) and each sub-air chamber of accessory air-space (3) with reducing air bag (1); Improve the dynamic stiffness of pneumatic spring, the dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
2. the pneumatic spring that the quiet dynamic rate combination of a kind of filling according to claim 1 and displacement is regulated is characterized in that: the volume of the independent sub-air chamber of accessory air-space (3) can change according to the different demands of different automobile types to its air spring rigidity change curve with number.
3. the pneumatic spring that the quiet dynamic rate combination of a kind of filling according to claim 1 and displacement is regulated; It is characterized in that: remove push rod (6); And replace its effect by the spacing block rubber that is fixed on the upper mounting plate (2); Withstand on the last plane of removable cover (4), with spring (5) to removable cover (4) axially locating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110168396A CN102330787A (en) | 2011-06-22 | 2011-06-22 | Air spring of filling and displacement static and dynamic rigidity combined regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110168396A CN102330787A (en) | 2011-06-22 | 2011-06-22 | Air spring of filling and displacement static and dynamic rigidity combined regulation |
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| Publication Number | Publication Date |
|---|---|
| CN102330787A true CN102330787A (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110168396A Pending CN102330787A (en) | 2011-06-22 | 2011-06-22 | Air spring of filling and displacement static and dynamic rigidity combined regulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595405A (en) * | 2013-10-30 | 2015-05-06 | 北汽福田汽车股份有限公司 | Chassis adjusting experiment shock absorber, chassis adjusting device and chassis adjusting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518154A (en) * | 1978-08-22 | 1985-05-21 | Daimler-Benz Aktiengesellschaft | Pneumatic spring, especially for motor vehicles |
| DE4300906A1 (en) * | 1993-01-15 | 1994-07-21 | Karlheinz Menkhoff | Pneumatic spring shock absorber |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
| CN101398052A (en) * | 2008-09-17 | 2009-04-01 | 华中科技大学 | Heavy load precision damper and vibration reduction system formed thereby |
-
2011
- 2011-06-22 CN CN201110168396A patent/CN102330787A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518154A (en) * | 1978-08-22 | 1985-05-21 | Daimler-Benz Aktiengesellschaft | Pneumatic spring, especially for motor vehicles |
| DE4300906A1 (en) * | 1993-01-15 | 1994-07-21 | Karlheinz Menkhoff | Pneumatic spring shock absorber |
| CN2700639Y (en) * | 2004-05-08 | 2005-05-18 | 杨德君 | Air spring shock damper capable of changing toughness and damping automatically |
| CN2926663Y (en) * | 2006-04-29 | 2007-07-25 | 杨德君 | Intelligent pneumatic spring |
| CN101398052A (en) * | 2008-09-17 | 2009-04-01 | 华中科技大学 | Heavy load precision damper and vibration reduction system formed thereby |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595405A (en) * | 2013-10-30 | 2015-05-06 | 北汽福田汽车股份有限公司 | Chassis adjusting experiment shock absorber, chassis adjusting device and chassis adjusting method |
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Application publication date: 20120125 |