CN102330784A - Air spring for static and dynamic rigidity adjustment by filling liquid and displacement and pressure limit impact reduction - Google Patents
Air spring for static and dynamic rigidity adjustment by filling liquid and displacement and pressure limit impact reduction Download PDFInfo
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- CN102330784A CN102330784A CN201110194753A CN201110194753A CN102330784A CN 102330784 A CN102330784 A CN 102330784A CN 201110194753 A CN201110194753 A CN 201110194753A CN 201110194753 A CN201110194753 A CN 201110194753A CN 102330784 A CN102330784 A CN 102330784A
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Abstract
An air spring is critical to improving the smoothness and the comfort of a vehicle, protecting a road and goods, and restricting overload. On the matching of the static rigidity characteristic of the air spring, people ignore the static rigidity adjustment which is required due to the difference between the rigidity of optional standard series of airbags and the rigidity required by specific vehicle models. The difficulty of dynamic rigidity adjustment is always that the static rigidity of the airbags is not matched. In a passive air suspension system, the static rigidity of the airbags which is not matched is an important cause for the serious lateral swinging of a vehicle in running. Existing dynamic rigidity adjustment is realized by connecting a main air chamber and an auxiliary air chamber and changing the pressure difference when air between the main air chamber and the auxiliary air chamber flows through the adjustment to a throttle port on a channel. The rigidity adjustment system does not change the volume of the air chambers when in adjustment, so that the difficulty of the rigidity adjustment is larger. The invention relates to the air spring which is developed for solving the problems. The air spring has adjustable static and dynamic rigidity, a simple structure and low cost, and is convenient and practical.
Description
One, technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring; This quiet rigidity topping up is regulated, and dynamic stiffness is regulated with displacement, can also reduce its rigidity automatically when when driving, running into the road surface projection; To reduce projection the combination pneumatic spring of the impact of vehicle body especially is adapted to the carrying big bus; 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 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.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 the rigidity that changes pneumatic spring.The control signal of this rigidity regulating system is by the multiple sensor collection, and deliver and send control command after microprocessor is handled, by the aperture that actuator regulates throttle valve, the rigidity that the pressure reduction when regulating gas flow between the major-minor air chamber is regulated 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 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 artificial the selection.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, and simple and reliable, responding fast, convenient and practical quiet rigidity topping up are regulated and dynamic stiffness is regulated the combination pneumatic spring that adds the projection buffering with displacement.
Solution of the present invention is: pneumatic spring is by air bag 1, upper mounting plate 2, and accessory air-space 3, removable cover 4, spring 5, push rod 6, lower installation board 7, gate valve 8, topping up one-way valve 9 combines with buffering one-way valve 10; The fixing push rod 6 in the inner plane central position of upper mounting plate 2; With the inner plane centralized positioning 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 diameters removable cover 4 movingly; The top of removable cover 4 has aperture to be communicated with air bag 1; 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.Gate valve 8 is installed in respectively on the lower installation board 7 with topping up one-way valve 9.Dashpot check valve 10 is contained on the sidewall of independent sub-air chamber of foot of accessory air-space 3, and is communicated with by the spring chamber of the radial hole on its sidewall with dashpot check valve 10; Also the number of available buffer one-way valve 10 equates with the independent sub-air chamber number of accessory air-space 3; Dashpot check valve 10 is separately positioned on the madial wall of each independent sub-air chamber of accessory air-space 3; And be communicated with air bag 1 by the radial hole on its sidewall, the spring chamber of dashpot check valve 10 is communicated with each independent sub-air chamber of accessory air-space 3; Also the number of available buffer one-way valve 10 equates with the independent sub-air chamber number of accessory air-space 3, and one of them dashpot check valve 10 is arranged on the sidewall of nethermost independent sub-air chamber of accessory air-space 3, and remaining is arranged on the dividing plate of each independent sub-air chamber of accessory air-space 3.The quiet rigidity of pneumatic spring is regulated: in air bag 1, charge into chemical combination liquid via topping up one-way valve 9, the chemical combination liquid that charges into has occupied the volume in the air bag 1, has reduced the gas actual volume in the air bag 1, has improved the quiet rigidity of pneumatic spring; Otherwise, discharge the part chemical combination liquid that has charged into by gate valve 8, just reduced the quiet rigidity of pneumatic spring; The dynamic stiffness of pneumatic spring is regulated: when vehicle is in 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 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; When vehicle dynamic load increase at the volley, the upper mounting plate 2 of air bag 1 moves down under the effect of dynamic load, and push rod 6 can move down thereupon; Promoting removable cover 4 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 air bag 1, the dynamic stiffness of raising pneumatic spring with 3 gas flow of accessory air-space; The dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.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 accessory air-space 3 nethermost sub-air chamber internal air pressures form can be opened dashpot check valve 10; Rapid communicated air bags 1 and accessory air-space 3 nethermost sub-air chamber; Increased the available gas volume in the air bag 1, reduced the rigidity of pneumatic spring, reduced of the impact of road surface projection vehicle body; Improve occupant's the travelling comfort and the smoothness of vehicle.
Control signal of the present invention is directly taken from the compression displacement of air bag 1, and control signal and regulating command are integrated, and effect rapidly, does not reliably have the response time lag, and the rigidity regulating power of pneumatic spring greatly improves; After having guaranteed the low vibration frequency characteristic of pneumatic spring, through the load-deflection curve that sub-air chamber that not isometric sub-air chamber and number do not wait can improve pneumatic spring effectively is set.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.
For making things convenient for the present invention's accurate adjustment in use, push rod 6 can be designed to regulate the structural type of height up and down, so that the position to axial of adjustment accessory air-space 3 and removable cover 4.Also can spring 5 be designed to extension spring, be fixed on the inner plane of loam cake plane and upper mounting plate 2 of removable cover 4.Also can change dashpot check valve 10 into side logical structure by bypass structure; Be contained on the madial wall of bottom sub-air chamber of accessory air-space 3; Set up the band Sealing the adjustable springs seat, this adjustable spring seat top head on dashpot check valve 10 the spring lower plane and with dashpot check valve 10 coaxial being contained on the lower installation board 7.So just can regulate the decrement of the spring of dashpot check valve 10 through the adjustable springs seat, regulate the buffer starting pressure of dashpot check valve 10 according to actual needs at any time.
Four, description of drawings:
Accompanying drawing 1 is a structure principle chart of the present invention.
Five, embodiment:
Embodiment of the present invention is: the quiet rigidity of pneumatic spring is regulated: in air bag 1, charge into chemical combination liquid via topping up one-way valve 9; The chemical combination liquid that charges into has occupied the volume in the air bag 1; Reduce the gas actual volume in the air bag 1, improved the quiet rigidity of pneumatic spring; Otherwise, discharge the part chemical combination liquid that has charged into by gate valve 8, just reduced the quiet rigidity of pneumatic spring; The dynamic stiffness of pneumatic spring is regulated: when vehicle is in 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 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; When vehicle dynamic load increase at the volley, the upper mounting plate 2 of air bag 1 moves down under the effect of dynamic load; Push rod 6 can move down thereupon; Promote removable cover 4 and move down, turn down successively accessory air-space 3 each sub-air chamber restriction and close each sub-air chamber of accessory air-space 3 successively, pressure reduction and the rigidity that reduces the actual volume raising pneumatic spring in the air bag 1 when improving air bag 1 with 3 gas flow of accessory air-space; The dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back.
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 accessory air-space 3 nethermost sub-air chamber internal air pressures form can be opened dashpot check valve 10; Rapid communicated air bags 1 and accessory air-space 3 nethermost sub-air chamber; Increased the available gas volume in the air bag 1, reduced the rigidity of pneumatic spring, reduced of the impact of road surface projection vehicle body; Improve occupant's travelling comfort, the smoothness of vehicle.
Claims (8)
1. topping up and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes, and are combined by air bag (1), upper mounting plate (2), sub-air chamber (3), removable cover (4), spring (5), push rod (6), lower installation board (7), gate valve (8), topping up one-way valve (9) and buffering one-way valve (10); It is characterized in that: at the inner plane center fixation push rod (6) of upper mounting plate (2); Inner plane centralized positioning with 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 top of removable cover (4) has aperture to be communicated with air bag (1), 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; Gate valve (8) and topping up one-way valve (9) are installed in respectively on the lower installation board (7); Dashpot check valve (10) is contained on the sidewall of independent sub-air chamber of foot of accessory air-space (3), and is communicated with by the spring chamber of the radial hole on its sidewall with dashpot check valve (10); The quiet rigidity of pneumatic spring is regulated: in air bag (1), charge into chemical combination liquid via topping up one-way valve (9), the chemical combination liquid that charges into has occupied the volume in the air bag (1), has reduced the gas actual volume in the air bag (1), has improved the quiet rigidity of pneumatic spring; Otherwise, discharge the part chemical combination liquid that has charged into by gate valve (8), just reduced the quiet rigidity of pneumatic spring; The dynamic stiffness of pneumatic spring is regulated: when vehicle is in 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 being in maximum open, 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); 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 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; 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 the nethermost sub-air chamber of accessory air-space (3) internal air pressure form can be opened dashpot check valve (10); Communicated air bags (1) and the nethermost sub-air chamber of accessory air-space (3) have increased the available gas volume in the air bag (1) rapidly, reduce the rigidity of pneumatic spring; Reduce of the impact of road surface projection, improve occupant's the travelling comfort and the smoothness of vehicle vehicle body.
2. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and added pressure limiting and subtract the pneumatic spring that dashes, and it 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. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes, and it is characterized in that: push rod (6) and upper mounting plate (2) are made into one.
4. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes; It is characterized in that: spring (5) is designed to extension spring, and its two ends are separately fixed on the inner plane of upper mounting plate (2) on the plane, top with removable cover (4).
5. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes, and it is characterized in that:: push rod (6) is designed to regulate the structural type of height up and down,
So that the position to axial of adjustment accessory air-space (3) and removable cover (4).
6. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes; It is characterized in that: change dashpot check valve (10) into side logical structure by bypass structure; Be contained on the madial wall of bottom sub-air chamber of accessory air-space (3); Set up the adjustable spring seat of band Sealing, this adjustable spring seat top heads on the spring lower plane of dashpot check valve (10), and is contained on the lower installation board (7) with dashpot check valve (10) is coaxial; So just can regulate the decrement of the spring of dashpot check valve (10) through the adjustable spring seat, regulate the buffer starting pressure of dashpot check valve (10) according to actual needs at any time.
7. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes; It is characterized in that: the number of dashpot check valve (10) equates with the independent sub-air chamber number of accessory air-space (3), and each dashpot check valve (10) is separately positioned on the madial wall of each independent sub-air chamber of accessory air-space (3).
8. a kind of topping up according to claim 1 and displacement are regulated quiet dynamic stiffness and are added pressure limiting and subtract the pneumatic spring that dashes; It is characterized in that: the number of dashpot check valve (10) equates with the independent sub-air chamber number of accessory air-space (3); One of them dashpot check valve (10) is arranged on the sidewall of nethermost independent sub-air chamber of accessory air-space (3), and remaining is arranged on the dividing plate of each independent sub-air chamber of accessory air-space (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110194753A CN102330784A (en) | 2011-07-12 | 2011-07-12 | Air spring for static and dynamic rigidity adjustment by filling liquid and displacement and pressure limit impact reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110194753A CN102330784A (en) | 2011-07-12 | 2011-07-12 | Air spring for static and dynamic rigidity adjustment by filling liquid and displacement and pressure limit impact reduction |
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| Publication Number | Publication Date |
|---|---|
| CN102330784A true CN102330784A (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110194753A Pending CN102330784A (en) | 2011-07-12 | 2011-07-12 | Air spring for static and dynamic rigidity adjustment by filling liquid and displacement and pressure limit impact reduction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016405A1 (en) * | 2015-07-24 | 2017-02-02 | 陈前 | Molecular spring vibration isolation buffer |
| CN115095202A (en) * | 2022-06-30 | 2022-09-23 | 广东正合智能设备有限公司 | Multilayer stereo garage and construction and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165256A (en) * | 1996-05-11 | 1997-11-19 | 北方设计研究院 | Steel spring air damping absorber and horizontal damping device |
| CN101412354A (en) * | 2008-10-07 | 2009-04-22 | 朱洪纲 | Unpowered driven air spring compression refrigeration apparatus |
| CN101688581A (en) * | 2007-05-18 | 2010-03-31 | Bfs多样产品有限责任公司 | Gas spring assembly |
| JP2010112423A (en) * | 2008-11-05 | 2010-05-20 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN202176654U (en) * | 2011-07-12 | 2012-03-28 | 杨洁 | Air spring for charging liquid, displacement adjusting static and dynamic stiffness and limiting pressure and absorbing shock |
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2011
- 2011-07-12 CN CN201110194753A patent/CN102330784A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165256A (en) * | 1996-05-11 | 1997-11-19 | 北方设计研究院 | Steel spring air damping absorber and horizontal damping device |
| CN101688581A (en) * | 2007-05-18 | 2010-03-31 | Bfs多样产品有限责任公司 | Gas spring assembly |
| CN101412354A (en) * | 2008-10-07 | 2009-04-22 | 朱洪纲 | Unpowered driven air spring compression refrigeration apparatus |
| JP2010112423A (en) * | 2008-11-05 | 2010-05-20 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN202176654U (en) * | 2011-07-12 | 2012-03-28 | 杨洁 | Air spring for charging liquid, displacement adjusting static and dynamic stiffness and limiting pressure and absorbing shock |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016405A1 (en) * | 2015-07-24 | 2017-02-02 | 陈前 | Molecular spring vibration isolation buffer |
| CN115095202A (en) * | 2022-06-30 | 2022-09-23 | 广东正合智能设备有限公司 | Multilayer stereo garage and construction and installation method thereof |
| CN115095202B (en) * | 2022-06-30 | 2023-09-19 | 广东正合智能设备有限公司 | Multilayer stereo garage and construction and installation method thereof |
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Application publication date: 20120125 |