CN102330789A - Composite air spring with in-built spiral spring, filler and auxiliary air chamber - Google Patents
Composite air spring with in-built spiral spring, filler and auxiliary air chamber Download PDFInfo
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- CN102330789A CN102330789A CN201110199068A CN201110199068A CN102330789A CN 102330789 A CN102330789 A CN 102330789A CN 201110199068 A CN201110199068 A CN 201110199068A CN 201110199068 A CN201110199068 A CN 201110199068A CN 102330789 A CN102330789 A CN 102330789A
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- spring
- auxiliary tank
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- air bag
- air
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Abstract
The invention relates to a composite air spring with an in-built spiral spring, filler and an auxiliary air chamber. In the stiffness adjustment of an air spring, people neglect that the static stiffness adjustment is needed because difference exists between stiffness of a selectable standard series airbag and required stiffness of a particular vehicle. Difficulty in the dynamic stiffness adjustment of the air spring is frequently resulted from the mismatch of the static stiffness for the airbag. In a passive type air suspension system, the innate deficiency in the static stiffness of the airbag is the important reason which results in severe lateral motion in vehicle operation. The deficiency results in the phenomenon of severe lateral motion in the operation of the vehicle and often causes passengers and drivers to feel dizzy and uncomfortable. Aiming at the difficulty, the invention develops the composite air spring with the in-built spiral spring, the filler and the auxiliary air chamber which are combined. According to the invention, the static stiffness of the air spring can be adjusted through filling loose materials or bulk solid materials and the like in the airbag, and the in-built spring can effectively compensate the dynamic stiffness of a passive type air spring in the operation of the vehicle; and in addition, the dynamic stiffness can be automatically lowered when the wheels of the vehicle are in touch with bumps in the operation of the vehicle so as to reduce the impact on the vehicle body caused by the bumps on a road surface.
Description
One, technical field:
The present invention relates to a kind of vehicle air suspension and use pneumatic spring.The pneumatic spring that this built-in helical spring adds filling and auxiliary tank combination 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; Do the time spent in the inertia dynamic load, its dynamic stiffness fails to be compensated effectively, has 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.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, and is simple and reliable, can effectively regulate air spring static rigidity; Make-up air spring dynamic rate improves the vehicle anti-roll capability fast, reduces the vehicle side-sway; Can also when the wheel in service of vehicle is run into projection, reduce dynamic stiffness automatically, reduce the road surface projection to the impact of vehicle body the composite air spring.
Solution of the present invention is: this built-in helical spring adds the composite air spring of filling and auxiliary tank, is combined by air bag 1, upper mounting plate 2, auxiliary tank 3, helical spring 4, following setting sleeve 5, packing 6, lower installation board 7 and one-way valve 8.On the central position of the inner plane of upper mounting plate 2 and lower installation board 7, auxiliary tank 3 and following setting sleeve 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 5 li of setting sleeves, 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; One-way valve 8 is installed on the outer bottom plane of auxiliary tank 3, and is communicated with the spring chamber of one-way valve 8 by the aperture on auxiliary tank 3 base plates; The quiet rigidity of pneumatic spring is regulated: when air bag 1 assembling; Before treating to load onto mounting plate 2 at last; In the air bag that installs miscellaneous part 1, insert the packing 6 of confirming volume via calculating via the last mounting hole of air bag 1, packing 6 is bulk granular thing or larger-size solid or the bigger flowable mass of viscosity; The packing of inserting 6 has occupied the volume of equivalent volumes 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, take out the packing 6 that part has been inserted by the mount inlet of upper mounting plate 2, just reduced the quiet rigidity of pneumatic spring; The dynamic compensation of pneumatic spring dynamic stiffness: 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 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, and the rigidity of pneumatic 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 inertia 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; Fixed orifice between air bag 1 and the auxiliary tank 3 also can improve the dynamic stiffness of 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 8; 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.
The present invention can change one-way valve 8 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 8 by the aperture on auxiliary tank 3 sidewalls, the aperture on one-way valve 8 valve bodies is communicated with the spring chamber and the auxiliary tank 3 of one-way valve 8.Also can one-way valve 8 be installed on the madial wall of auxiliary tank 3, be communicated with the suction port of one-way valve 8 by the aperture on auxiliary tank 3 sidewalls, the aperture on one-way valve 8 valve bodies is communicated with the spring chamber and the auxiliary tank 3 of one-way valve 8.
The present invention is simple in structure, and is with low cost, and reliable performance is a kind ofly in the passive type airsuspension system, can effectively regulate air spring static rigidity, and its dynamic rate of timely compensation reduces the method for vehicle side-sway; Also can be through changing helical spring rigidity and adapting to the requirement of different automobile types with decrement.
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 static stiffness of this pneumatic spring is regulated: when air bag 1 assembling; Before treating to load onto mounting plate 2 at last; In the air bag that installs miscellaneous part 1, insert the packing 6 of confirming volume via calculating via the last mounting hole of air bag 1, improved the quiet rigidity of pneumatic spring; Otherwise, take out the packing 6 that part has been inserted by upper mounting plate 2, just reduced the quiet rigidity of pneumatic spring; 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, compression helical spring 4 simultaneously, and the elastic anchorage force of helical spring 4 can increase thereupon; The dynamic stiffness of make-up air spring; Fixed orifice between air bag 1 and the auxiliary tank 3 also can improve the dynamic stiffness of 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 8; 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 (8)
1. a built-in helical spring adds the composite air spring of filling with auxiliary tank, is combined by air bag (1), upper mounting plate (2), auxiliary tank (3), helical spring (4), time setting sleeve (5), packing (6), lower installation board (7) and one-way valve (8); It is characterized in that: auxiliary tank (3) and following setting sleeve (5) are installed in the inner plane central position at upper mounting plate (2) and lower installation board (7), and the top of helical spring (4) is enclosed within on the auxiliary tank (3), and the bottom is enclosed within down setting sleeve (5) lining; Arbitrary position on auxiliary tank (3) sidewall has a small-bore hole, the fixed restrictive valve between suitable air bag of this aperture (1) and the auxiliary tank (3); It can follow the dynamic stiffness of the movement velocity adjusting pneumatic spring of air bag (1); 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; One-way valve (8) is installed on the outer bottom plane of auxiliary tank (3), and is communicated with the spring chamber of one-way valve (8) by the aperture on auxiliary tank (3) base plate; The quiet rigidity of pneumatic spring is regulated: when pneumatic spring is assembled; It is preceding to treat to load onto at last mounting plate (2); In the air bag that installs miscellaneous part (1), insert the packing (6) of confirming volume via calculating via the last mounting hole of air bag (1), improved the quiet rigidity of pneumatic spring; Otherwise, take out the packing (6) that part has been inserted by the last mounting hole of air bag (1), just reduced the quiet rigidity of pneumatic spring; 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 dynamic stiffness of make-up air spring, the fixed orifice between air bag (1) and the auxiliary tank (3) also can improve the dynamic stiffness of pneumatic spring, the part dynamic load of balance vehicle body; The inclination that stops vehicle body with lean forward and swing back, the side-sway of minimizing vehicle body when advancing; 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 (8); Communicated air bags (1) and auxiliary tank (3) have increased the available gas volume in the air bag (1) rapidly, 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.
2. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, 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 the composite air spring of filling and auxiliary tank, and it is characterized in that: one-way valve (8) is installed on the madial wall of auxiliary tank (3).
4. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, it is characterized in that: upper mounting plate (2) and auxiliary tank (3) are combined into one.
5. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, and it is characterized in that: packing (6) is larger-size sheet or blocks of solid.
6. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, and it is characterized in that: packing (6) is the bigger flowable mass of viscosity.
7. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, and it is characterized in that: following setting sleeve (5) and lower installation board (7) are combined into one.
8. a kind of built-in helical spring according to claim 1 adds the composite air spring of filling and auxiliary tank, and it is characterized in that: packing (6) is the bulk granular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110199068A CN102330789A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with in-built spiral spring, filler and auxiliary air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110199068A CN102330789A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with in-built spiral spring, filler and auxiliary air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102330789A true CN102330789A (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110199068A Pending CN102330789A (en) | 2011-07-17 | 2011-07-17 | Composite air spring with in-built spiral spring, filler and auxiliary air chamber |
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| CN (1) | CN102330789A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183703A (en) * | 2021-05-26 | 2021-07-30 | 郑州精通汽车零部件有限公司 | Air suspension gasbag structure and vehicle |
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 |
| US20080284072A1 (en) * | 2007-05-18 | 2008-11-20 | Bfs Diversified Products, Llc | Gas spring assembly |
| CN101412354A (en) * | 2008-10-07 | 2009-04-22 | 朱洪纲 | Unpowered driven air spring compression refrigeration apparatus |
-
2011
- 2011-07-17 CN CN201110199068A patent/CN102330789A/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 |
| US20080284072A1 (en) * | 2007-05-18 | 2008-11-20 | Bfs Diversified Products, Llc | Gas spring assembly |
| CN101412354A (en) * | 2008-10-07 | 2009-04-22 | 朱洪纲 | Unpowered driven air spring compression refrigeration apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113183703A (en) * | 2021-05-26 | 2021-07-30 | 郑州精通汽车零部件有限公司 | Air suspension gasbag structure and vehicle |
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Application publication date: 20120125 |