CN202158128U - Air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering - Google Patents
Air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering Download PDFInfo
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- CN202158128U CN202158128U CN2011202511126U CN201120251112U CN202158128U CN 202158128 U CN202158128 U CN 202158128U CN 2011202511126 U CN2011202511126 U CN 2011202511126U CN 201120251112 U CN201120251112 U CN 201120251112U CN 202158128 U CN202158128 U CN 202158128U
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Abstract
The utility model provides an air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering, which is formed by combining an air bag (1), an upper mounting plate (2), an auxiliary air chamber (3), a throttling valve core (4), a spring (5), a cylinder sleeve (6), a piston (7), an adjusting screw rod (8), a lower mounting plate (9), a screw plug (10), a locking screw nut (11) and two check valves (12). The air spring is characterized in that the auxiliary air chamber (3) is installed and fixed on the inner plane of the lower mounting plate (9), the throttling valve core (4) is installed in a middle inner hole of the auxiliary air chamber (3), the upper end of the throttling valve core (4) pushes against a top plate in the middle inner hole, the lower end of the throttling valve core (4) is supported and positioned by the spring (5), the lower part of the spring (5) is positioned by the screw plug (10), the middle of which is provided with a small hole communicated with the atmosphere, the two check valves (12) are respectively installed on the side walls of two air dividing chambers of the auxiliary air chamber (3), and the small hole in the side wall is communicated with spring cavities of the check valves (12). The air spring has adjustable static rigidity and dynamic rigidity, is simple in structure, low in cost, and 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 volume adjustment and dynamic stiffness self-adaptive pressure are regulated the pneumatic spring that adds the step pressure buffer and especially are adapted to the carrying big bus; The city bus big bus; Also be 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; Through controlling the aperture of the throttle valve on the connecting passage between major and minor air chamber; Pressure reduction when realizing gas flow between the major-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.
Three, summary of the invention:
The object of the invention will be developed a kind of low cost exactly, and quiet rigidity volume adjustment and dynamic stiffness self-adaptive pressure simple and reliable, responding fast are regulated the pneumatic spring that adds the step pressure buffer.
Solution of the present invention is: this pneumatic spring is by air bag 1, upper mounting plate 2, accessory air-space 3, throttling valve core 4, spring 5, cylinder sleeve 6, piston 7, and adjusting screw rod 8, lower installation board 9, screw plug 10, locking nut 11 and two one-way valves 12 combine.Accessory air-space 3 is fixed on the inner plane of lower installation board 9; Throttling valve core 4 is contained in the middle endoporus of accessory air-space 3; Its upper end heads on the middle endoporus top board of accessory air-space 3; The location is supported by spring 5 in the lower end, and the bottom of spring 5 has an aperture and atmosphere by screw plug 10 location in the middle of the screw plug 10; Cylinder sleeve 6 is fixed on the inner plane of upper mounting plate 2, and piston 7 is installed in 6 li of cylinder sleeves; Adjusting screw rod 8 and cylinder sleeve 6 coaxial being installed on the upper mounting plate 2, its underpart heads on the last plane of piston 7, and top is stretched out upper mounting plate 2 and is left adjustment stroke; Locking nut 11 is installed in the upper end of adjusting screw rod 8; Two one-way valves 12 are installed in respectively on the outer side wall of two sub-air chamber of accessory air-space 3, and are communicated with by the spring chamber of the aperture on its sidewall with one-way valve 12; The quiet rigidity of pneumatic spring is regulated: unclamp locking nut 11, turn adjusting screw rod 8, piston 7 is moved down, just reduced the gas actual volume in the air bag 1, improved the quiet rigidity of pneumatic spring; Otherwise, just reduced the quiet rigidity of pneumatic spring; The dynamic stiffness of pneumatic spring is regulated: the air pressure in the air bag 1 directly acts on the upper-end surface of throttling valve core 4; Its lower end is by spring 5 axially support; When vehicle is in unloaded and setting height; Air-spring bellows 1 inner air pressure multiply by the thrust that sectional area produced of throttling valve core 4 and the spring force balance of spring 5, and the restriction of throttling valve core 4 is communicated with the throttle orifice of two independent air chambers of accessory air-space 3 and is in maximum open, and the dynamic stiffness of pneumatic spring is minimum; When the load and the dynamic load increase of vehicle, air bag 1 inner air pressure rises, and acts on the thrust that is produced on the upper-end surface of throttling valve core 4 and increases; The spring force that promotion throttling valve core 4 overcomes spring 5 moves down; Reach new balance, throttling valve core 4 moves down the restriction on the connecting passage that has turned down 3 of air bag 1 and accessory air-spaces, in the switching stroke section of this restriction; Through improving the gas flow pressure reduction of 3 of air bag 1 and accessory air-spaces, realized the rigidity of continuous adjusting pneumatic spring; Pressure in air bag 1 continues to improve; Promote throttling valve core 4 and continue to move down, will close accessory air-space 3 uppermost first sub-air chamber, only stayed second sub-air chamber and linked to each other with air bag 1; The volume that has reduced pneumatic spring in the continuous rigidity adjustment of pneumatic spring on the physical significance; Realize the air spring rigidity combination adjusting that pressure reduction and volume are combined, the rigidity of pneumatic spring is increased, adapted to corresponding load.When the load of vehicle further increases, then automatically second sub-air chamber of accessory air-space 3 is repeated the adjustment process of above-mentioned first sub-air chamber.When vehicle turns round, because action of inertia leans on air bag 1 inner air pressure of the pneumatic spring in the bend outside to rise; Equally; Restriction on the connecting passage that meeting pass ballonet 1 and accessory air-space are 3 increases the rigidity of pneumatic spring, thereby has stoped the further inclination of vehicle body; When the vehicle jack rabbit start or when bringing to a halt; If the rigidity of pneumatic spring does not increase thereupon; Same because action of inertia can make vehicle body produce the layback and the phenomenon that leans forward, the present invention has when vehicle body generation layback equally and leans forward when taking place; Improve the function of the dynamic stiffness of back, preceding pneumatic spring, suppress the aggravation of this phenomenon effectively.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 each sub-air chamber's internal air pressure of this step pressure and accessory air-space 3 forms can be opened one-way valve 12; Each sub-air chamber of rapid communicated air bags 1 and accessory air-space 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.
Control signal of the present invention is directly taken from the pressure in the 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.
The present invention also can be designed to the one-level restriction pattern of throttle valve the two-step serial restriction pattern of one-level fixed restriction and one-level variable restrictor: promptly at the circular groove that the throttle orifice equal diameters on the inner hole wall in the middle of an axial length and the sub-air chamber 3 is set on the cylindrical of throttling valve core 4; This circular groove is communicated with by the endoporus of radial hole with throttling valve core 4; Through reducing the diameter of the radially throttle orifice on the throttling valve core 4, it is designed to the one-level fixed throttle port; And the restriction that the throttle orifice on the inner hole wall is formed in the middle of circular groove on throttling valve core 4 cylindricals and the sub-air chamber 3 is exactly original settable orifice; The orifice size of different just this restrictions is a little big a little.The pressure drop that this polyphone throttling pattern has been shared the one-level restriction by the two-step throttle mouth helps reducing the susceptibility of restriction to variation in pressure, improves the occupant and gets travelling comfort; Help reducing the processing and the installation precision of throttle valve, save cost.
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: unclamp locking nut 11, turn adjusting screw rod 8, piston 7 is moved down, just reduced the gas actual volume in the air bag 1, improved the quiet rigidity of pneumatic spring; Otherwise, just reduced the quiet rigidity of pneumatic spring; The dynamic stiffness of pneumatic spring is regulated: the air pressure in the air bag 1 directly acts on the upper-end surface of throttling valve core 4; Its lower end is by spring 5 axially support; When vehicle is in unloaded and setting height; Air bag 1 inner air pressure multiply by the thrust that sectional area produced of throttling valve core 4 and the spring force balance of spring 5, and the restriction of throttling valve core 4 is communicated with the throttle orifice of two independent air chambers of accessory air-space 3 and is in maximum open, and the dynamic stiffness of pneumatic spring is minimum; When the load and the dynamic load increase of vehicle, air bag 1 inner air pressure rises, and acts on the thrust that is produced on the upper-end surface of throttling valve core 4 and increases; The spring force that promotion throttling valve core 4 overcomes spring 5 moves down; Reach new balance, throttling valve core 4 moves down the restriction on the connecting passage that has turned down 3 of air bag 1 and accessory air-spaces, in the switching stroke section of this restriction; Through improving the gas flow pressure reduction of 3 of air bag 1 and accessory air-spaces, realized the rigidity of continuous adjusting pneumatic spring; Pressure in air bag 1 continues to improve, and promotes throttling valve core 4 and continues to move down, and will close accessory air-space 3 uppermost first sub-air chamber; Only having stayed second sub-air chamber links to each other with air bag 1; In the continuous rigidity adjustment of pneumatic spring, the volume that has reduced pneumatic spring on the physical significance has been realized the pneumatic spring dynamic stiffness combination adjusting that pressure reduction and volume are combined; The rigidity of pneumatic spring is increased, adapt to corresponding load.When the load of vehicle further increases, then automatically second sub-air chamber of accessory air-space 3 is repeated the adjustment process of above-mentioned first sub-air chamber.When vehicle turns round, because action of inertia leans on air bag 1 inner air pressure of the pneumatic spring in the bend outside to rise; Equally; Restriction on the connecting passage that meeting pass ballonet 1 and accessory air-space are 3 increases the rigidity of pneumatic spring, thereby has stoped the further inclination of vehicle body; When the vehicle jack rabbit start or when bringing to a halt; If the rigidity of pneumatic spring does not increase thereupon; Same because action of inertia can make vehicle body produce the layback and the phenomenon that leans forward, the present invention has when vehicle body generation layback equally and leans forward when taking place; Improve the function of the rigidity of back, preceding pneumatic spring, suppress the aggravation of this phenomenon effectively.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 each sub-air chamber's internal air pressure of this step pressure and accessory air-space 3 forms can be opened one-way valve 12; Each sub-air chamber of rapid communicated air bags 1 and accessory air-space 3; Increased the available gas volume in the air bag 1; 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.
Claims (1)
1. volume and pressure transfer rigidity to add the pneumatic spring of step pressure buffer; By air bag (1), upper mounting plate (2), accessory air-space (3), throttling valve core (4), spring (5), cylinder sleeve (6); Piston (7); Adjusting screw rod (8), lower installation board (9), screw plug (10), locking nut (11) and one-way valve (12) combine; It is characterized in that: accessory air-space (3) is fixed on the inner plane of lower installation board (9); Throttling valve core (4) is contained in the middle endoporus of accessory air-space (3); Its upper end heads on the middle endoporus top board of accessory air-space (3); The location is supported by spring (5) in the lower end, and the bottom of spring (5) has an aperture and atmosphere by screw plug (10) location in the middle of the screw plug (10); Cylinder sleeve (6) is fixed on the inner plane of upper mounting plate (2), and piston (7) is installed in cylinder sleeve (6) lining; Adjusting screw rod (8) is installed on the upper mounting plate (2) with cylinder sleeve (6) is coaxial; Its underpart heads on the last plane of piston (7), and top is stretched out upper mounting plate (2) and left adjustment stroke; Locking nut (11) is installed on the adjusting screw rod (8), and locks adjusting screw rod (8) with upper mounting plate (2); Two one-way valves (12) are installed in respectively on the sidewall of two sub-air chamber of accessory air-space (3), and are communicated with by the spring chamber of the aperture on its sidewall with one-way valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202511126U CN202158128U (en) | 2011-07-17 | 2011-07-17 | Air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202511126U CN202158128U (en) | 2011-07-17 | 2011-07-17 | Air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering |
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| Publication Number | Publication Date |
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| CN202158128U true CN202158128U (en) | 2012-03-07 |
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| CN2011202511126U Expired - Fee Related CN202158128U (en) | 2011-07-17 | 2011-07-17 | Air spring with rigidity adjusted by volume and pressure and having phase step pressure buffering |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330776A (en) * | 2011-07-17 | 2012-01-25 | 贺劼 | Air spring with function of regulating rigidity according to volume and pressure and buffering step pressure |
| CN102829120A (en) * | 2012-09-22 | 2012-12-19 | 无锡市中捷减震器有限公司 | Rubber air spring for high-speed railway |
| CN108528163A (en) * | 2018-06-19 | 2018-09-14 | 四川立地车辆底盘科技有限公司 | Automotive suspension double-capsule variation rigidity gas spring |
| CN108547901A (en) * | 2018-06-19 | 2018-09-18 | 四川立地车辆底盘科技有限公司 | The method of suspension gas spring tune rigidity |
| CN108638778A (en) * | 2018-06-19 | 2018-10-12 | 四川立地车辆底盘科技有限公司 | Built-in list capsule suspension gas spring |
| CN108790661A (en) * | 2018-06-19 | 2018-11-13 | 四川立地车辆底盘科技有限公司 | Built-in capsule suspension gas spring |
| CN109269719A (en) * | 2018-10-25 | 2019-01-25 | 北京航天发射技术研究所 | A kind of gas flow field pressure testing system working band experimental rig and method |
-
2011
- 2011-07-17 CN CN2011202511126U patent/CN202158128U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330776A (en) * | 2011-07-17 | 2012-01-25 | 贺劼 | Air spring with function of regulating rigidity according to volume and pressure and buffering step pressure |
| CN102829120A (en) * | 2012-09-22 | 2012-12-19 | 无锡市中捷减震器有限公司 | Rubber air spring for high-speed railway |
| CN108528163A (en) * | 2018-06-19 | 2018-09-14 | 四川立地车辆底盘科技有限公司 | Automotive suspension double-capsule variation rigidity gas spring |
| CN108547901A (en) * | 2018-06-19 | 2018-09-18 | 四川立地车辆底盘科技有限公司 | The method of suspension gas spring tune rigidity |
| CN108638778A (en) * | 2018-06-19 | 2018-10-12 | 四川立地车辆底盘科技有限公司 | Built-in list capsule suspension gas spring |
| CN108790661A (en) * | 2018-06-19 | 2018-11-13 | 四川立地车辆底盘科技有限公司 | Built-in capsule suspension gas spring |
| CN108528163B (en) * | 2018-06-19 | 2019-12-13 | 四川立地车辆底盘科技有限公司 | Automobile suspension double-capsule variable-stiffness gas spring |
| CN108790661B (en) * | 2018-06-19 | 2019-12-13 | 四川立地车辆底盘科技有限公司 | Built-in capsule suspension gas spring |
| CN108638778B (en) * | 2018-06-19 | 2020-01-10 | 四川立地车辆底盘科技有限公司 | Built-in single capsule suspension gas spring |
| CN109269719A (en) * | 2018-10-25 | 2019-01-25 | 北京航天发射技术研究所 | A kind of gas flow field pressure testing system working band experimental rig and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20140717 |
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| EXPY | Termination of patent right or utility model |