CN102330791A - Composite air spring provided with built-in helical spring and auxiliary air chamber to reduce impact - Google Patents
Composite air spring provided with built-in helical spring and auxiliary air chamber to reduce impact Download PDFInfo
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- CN102330791A CN102330791A CN201110199637A CN201110199637A CN102330791A CN 102330791 A CN102330791 A CN 102330791A CN 201110199637 A CN201110199637 A CN 201110199637A CN 201110199637 A CN201110199637 A CN 201110199637A CN 102330791 A CN102330791 A CN 102330791A
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- auxiliary tank
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Abstract
An air spring in an automobile suspension system has a significant importance on the improvement on the smoothness and comfortableness of a vehicle, the protection of a road and goods, as well as the limit to overload. In a passive air suspension system which is commonly used at present, as the air spring has a lower anti-rolling stiffness, a vehicle has a very serious side-swinging phenomenon during the operation, and passengers and a driver can feel dizzy and uncomfortable, so that the comfortableness of the passengers and the safe driving of the driver are seriously affected. In order to solve the problem, the invention provides a composite air spring provided with a built-in helical spring and an auxiliary air chamber to reduce impact. The composite air spring can be used for compensating dynamic stiffness of the air spring at proper time, and automatically reducing the dynamic stiffness when a wheel runs into a bump during the operation of the vehicle so as to reduce the impact on a vehicle body caused by the bump on a road surface; in the combination of stiffness, airbag stiffness plays a leading role, the helical spring is assistant, and the stiffness of the helical spring is matched with a preloading quantity, so that dynamic stiffness characteristics of a passive air spring can be effectively improved, the comfortableness of the vehicle can be improved, and side swinging can be reduced.
Description
One. technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring.This being subtracted towards the pneumatic spring of combination by built-in helical spring and auxiliary tank 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 the passive type airsuspension system of special vehicle.
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 passive type airsuspension system of generally using at present; Because the anti-roll stiffness of pneumatic spring is lower; When the Rigidity Matching of pneumatic spring, people have 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.Caused the vehicle side-sway phenomenon that is in operation more serious, it is dizzy and uncomfortable that occupant and driver are produced, and seriously influences occupant's travelling comfort and driver's safe driving.
Three. summary of the invention:
The object of the invention will be developed a kind of low cost exactly, and simple and reliable, the quick dynamic stiffness of make-up air spring improves the vehicle anti-roll capability, reduces the vehicle side-sway; Again can be at vehicle in service, reduce dynamic stiffness when wheel is run into projection automatically, reduce the composite air spring of road surface projection to the impact of vehicle body.
Solution of the present invention is: this built-in helical spring adds auxiliary tank and subtracts the composite air spring that dashes, and is combined by air bag 1, upper mounting plate 2, auxiliary tank 3, helical spring 4, following locating stud 5, lower installation board 6 and one-way valve 7.On the inner plane central position of upper mounting plate 2 and lower installation board 6, auxiliary tank 3 and following locating stud 5 are installed; Arbitrary position on auxiliary tank 3 sidewalls has a small-bore hole, the fixed restrictive valve between suitable air bag 1 of this aperture and the auxiliary tank 3; It can follow the dynamic stiffness of the movement velocity adjusting pneumatic spring of air bag 1; Can also discharge the residual pressure of gas in the auxiliary tank 3; The top of helical spring 4 is enclosed within on the auxiliary tank 3, and the bottom is enclosed within down on the locating stud 5; One-way valve 7 is installed on the outer bottom plane of auxiliary tank 3, and is communicated with the spring chamber of one-way valve 7 by the aperture on auxiliary tank 3 base plates; The clean interior outage degree of the air bag 1 the when free height of helical spring 4 is equal to or slightly greater than vehicle maximum ride height.When vehicle was in maximum ride height, helical spring 4 is in did not have compression or small amount of compression state, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and air actual volume in the air bag 1 in the air bag 1; Vehicle is in when using ride height always, and helical spring 4 is in the part compressive state, and the rigidity of pneumatic spring is by determining according to the inflation pressure of load request and the rigidity of air actual volume in the air bag 1 and helical spring 4 in the air bag 1; When vehicle was in minimum ride height, helical spring 4 was in further compressive state, sky, and the rigidity of air spring is by determining according to the air actual volume in the inflation pressure of load request and the air bag 1 and the rigidity of helical spring 4 in the air bag 1; When vehicle dynamic load increase at the volley; Upper mounting plate 2 moves down at the effect lower compression air bag 1 of dynamic load, and compression helical spring 4 simultaneously is along with upper mounting plate 2 moves down under the effect of dynamic load; The elastic anchorage force of helical spring 4 can increase thereupon; The part dynamic load of balance vehicle body, the fixed restrictive valve between air bag 1 and the auxiliary tank 3 can be followed the dynamic stiffness that the movement velocity of air bag 1 is regulated pneumatic spring, stop the inclination of vehicle body and lean forward and swing back; Reduce the side-sway of vehicle body when advancing, improve the dynamic stability and the travelling comfort of vehicle body.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 auxiliary tank 3 internal air pressures form can be opened one-way valve 7; Rapid communicated air bags 1 and auxiliary tank 3; Increased the available gas volume in the air bag 1, reduced the dynamic stiffness of pneumatic spring, reduced of the impact of road surface projection vehicle body; Improve occupant's the travelling comfort and the smoothness of vehicle.
The present invention is simple in structure, and is with low cost, easy for installation, and reliable performance is a kind of method that in the passive type airsuspension system, can effectively reduce the vehicle side-sway; Also can be through changing helical spring rigidity and adapting to the requirement of different automobile types with decrement.
But the present invention changes one-way valve 7 into side logical structure by bypass structure; Be installed on the madial wall of auxiliary tank 3; Be communicated with the suction port of one-way valve 7 by the aperture on auxiliary tank 3 sidewalls, the aperture on one-way valve 7 valve bodies is communicated with the spring chamber and the auxiliary tank 3 of one-way valve 7.Also can one-way valve 7 be installed on the inwall of auxiliary tank 3, be communicated with the suction port of one-way valve 7 by the aperture on auxiliary tank 3 inwalls, the spring chamber of one-way valve 7 is communicated with auxiliary tank 3.
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 dynamic stiffness compensation of this composite air spring: when vehicle dynamic load at the volley increases; Upper mounting plate 2 moves down at the effect lower compression air bag 1 of dynamic load; Compression helical spring 4 simultaneously; Along with upper mounting plate 2 moves down under the effect of dynamic load, the elastic anchorage force of helical spring 4 can increase thereupon; Fixed orifice between air bag 1 and the auxiliary tank 3; It can follow the dynamic stiffness that the movement velocity of air bag 1 is regulated pneumatic spring, and the part dynamic load of balance vehicle body stops the inclination of vehicle body and leans forward and swing back; Reduce the side-sway of vehicle body when advancing, improve the dynamic stability and the travelling comfort of vehicle body.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 auxiliary tank 3 internal air pressures form can be opened one-way valve 7; Rapid communicated air bags 1 and auxiliary tank 3; Increased the available gas volume in the air bag 1; Reduce the dynamic stiffness of pneumatic spring, reduce of the impact of road surface projection, improve occupant's the travelling comfort and the smoothness of vehicle vehicle body.
Claims (5)
1. a built-in helical spring adds auxiliary tank and subtracts the composite air spring that dashes, by air bag (1), upper mounting plate (2), auxiliary tank (3), helical spring (4), locating stud (5), lower installation board (6), one-way valve (7) combine down; It is characterized in that: on the central position of the inner plane of upper mounting plate (2) and lower installation board (6), auxiliary tank (3) and following locating stud (5) are installed, the top of helical spring (4) is enclosed within on the auxiliary tank (3), and the bottom is enclosed within down on the locating stud (5); One-way valve (7) is installed on the outer bottom plane of auxiliary tank (3), and is communicated with the spring chamber of one-way valve (7) by the aperture on auxiliary tank (3) base plate; At suitable air bag of aperture (1) that is provided with on auxiliary tank (3) sidewall and the fixed restrictive valve between the auxiliary tank (3); It can follow the dynamic stiffness of the movement velocity adjusting pneumatic spring of air bag (1); The dynamic compensation of pneumatic spring dynamic stiffness: when vehicle dynamic load at the volley increases; Upper mounting plate (2) moves down at the effect lower compression air bag (1) of dynamic load, and compression helical spring (4) simultaneously is along with upper mounting plate (2) moves down under the effect of dynamic load; The elastic anchorage force of helical spring (4) can increase thereupon; The part dynamic load of balance vehicle body, the fixed restrictive valve between air bag (1) and the auxiliary tank (3) can be followed the dynamic stiffness that the movement velocity of air bag (1) is regulated pneumatic spring, stop the inclination of vehicle body and lean forward and swing back; Reduce the side-sway of vehicle body when advancing, improve the dynamic stability and the travelling comfort of vehicle body; 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 auxiliary tank (3) internal air pressure form can be opened one-way valve (7); Rapid communicated air bags (1) and auxiliary tank (3); Increased the available gas volume in the air bag (1); Reduce the dynamic stiffness of pneumatic spring, reduce of the impact of road surface projection vehicle body, improve vehicle travelling comfort and smoothness.
2. a kind of built-in helical spring according to claim 1 adds auxiliary tank and subtracts the composite air spring that dashes, and it is characterized in that: the rigidity of helical spring (4), height and precompressed amount can change according to the different demands of different automobile types to its air spring rigidity change curve.
3. a kind of built-in helical spring according to claim 1 adds auxiliary tank and subtracts the composite air spring that dashes, and it is characterized in that: upper mounting plate (2) and auxiliary tank (3) are combined into one.
4. a kind of built-in helical spring according to claim 1 adds auxiliary tank and subtracts the composite air spring that dashes; It is characterized in that: change one-way valve (7) into side logical structure by bypass structure; Be installed on the madial wall of auxiliary tank (3); Be communicated with the suction port of one-way valve (7) by the aperture on auxiliary tank (3) sidewall, the aperture on one-way valve (7) valve body is communicated with the spring chamber and the auxiliary tank (3) of one-way valve (7).
5. a kind of built-in helical spring according to claim 1 adds auxiliary tank and subtracts the composite air spring that dashes; It is characterized in that: one-way valve (7) is installed on the inwall of auxiliary tank (3); Be communicated with the suction port of one-way valve (7) by the aperture on auxiliary tank (3) inwall, the spring chamber of one-way valve (7) is communicated with auxiliary tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110199637A CN102330791A (en) | 2011-07-17 | 2011-07-17 | Composite air spring provided with built-in helical spring and auxiliary air chamber to reduce impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110199637A CN102330791A (en) | 2011-07-17 | 2011-07-17 | Composite air spring provided with built-in helical spring and auxiliary air chamber to reduce impact |
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| Publication Number | Publication Date |
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| CN102330791A true CN102330791A (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110199637A Pending CN102330791A (en) | 2011-07-17 | 2011-07-17 | Composite air spring provided with built-in helical spring and auxiliary air chamber to reduce impact |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619977A (en) * | 2020-06-15 | 2020-09-04 | 扬州泰利特种装备有限公司 | Air pillow and logistics equipment with same |
| CN111765195A (en) * | 2020-08-04 | 2020-10-13 | 广州溢滔钱潮减震科技股份有限公司 | Composite air spring structure with built-in spiral spring |
| CN113173046A (en) * | 2021-05-18 | 2021-07-27 | 贵州詹阳动力重工有限公司 | Horizontal adjusting device and wheeled multi-purpose machineshop car |
| CN113915275A (en) * | 2021-10-29 | 2022-01-11 | 新一代汽车底盘系统(马鞍山)有限公司 | Air spring and air suspension with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423884A1 (en) * | 1994-07-07 | 1996-01-11 | Continental Ag | Air spring shock absorber for car suspension |
| CN1165256A (en) * | 1996-05-11 | 1997-11-19 | 北方设计研究院 | Steel spring air damping absorber and horizontal damping device |
| JP2000337417A (en) * | 1999-05-25 | 2000-12-05 | Mitsubishi Steel Mfg Co Ltd | Air spring |
| 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 |
-
2011
- 2011-07-17 CN CN201110199637A patent/CN102330791A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423884A1 (en) * | 1994-07-07 | 1996-01-11 | Continental Ag | Air spring shock absorber for car suspension |
| CN1165256A (en) * | 1996-05-11 | 1997-11-19 | 北方设计研究院 | Steel spring air damping absorber and horizontal damping device |
| JP2000337417A (en) * | 1999-05-25 | 2000-12-05 | Mitsubishi Steel Mfg Co Ltd | Air spring |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619977A (en) * | 2020-06-15 | 2020-09-04 | 扬州泰利特种装备有限公司 | Air pillow and logistics equipment with same |
| CN111765195A (en) * | 2020-08-04 | 2020-10-13 | 广州溢滔钱潮减震科技股份有限公司 | Composite air spring structure with built-in spiral spring |
| CN113173046A (en) * | 2021-05-18 | 2021-07-27 | 贵州詹阳动力重工有限公司 | Horizontal adjusting device and wheeled multi-purpose machineshop car |
| CN113173046B (en) * | 2021-05-18 | 2022-10-28 | 贵州詹阳动力重工有限公司 | Horizontal adjusting device and wheeled multi-purpose machineshop car |
| CN113915275A (en) * | 2021-10-29 | 2022-01-11 | 新一代汽车底盘系统(马鞍山)有限公司 | Air spring and air suspension with same |
| CN113915275B (en) * | 2021-10-29 | 2024-01-19 | 新一代汽车底盘系统(马鞍山)有限公司 | Air spring and air suspension with same |
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Application publication date: 20120125 |