CN103644235A - Semi-active parallel air spring - Google Patents
Semi-active parallel air spring Download PDFInfo
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- CN103644235A CN103644235A CN201310751299.XA CN201310751299A CN103644235A CN 103644235 A CN103644235 A CN 103644235A CN 201310751299 A CN201310751299 A CN 201310751299A CN 103644235 A CN103644235 A CN 103644235A
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Abstract
The invention relates to a semi-active parallel air spring. The semi-active parallel air spring consists of an upper chamber air valve, a pressure sensor, an air cylinder, an upper air chamber, a sealing ring, an inflator pump, a floating piston, a lower air chamber, a lower chamber air valve, an air pipe, a piston rod and a controller. The semi-active parallel air spring is simple in structure, relatively low in cost and convenient to install, can produce a large elastic force when moving in two directions, and the stiffness of a spring is increased gradually; moreover, the initial load of an automobile can be obtained according to upper and lower pressure sensor signals, and the initial stiffness can be adjusted, meanwhile, the function of adjusting the height of an automobile body can be realized, and the stiffness of the automobile can be adjusted in real time according to the road conditions in the driving process of the automobile, so that the riding comfort, the handling stability and the trafficability of the vehicle can be improved.
Description
Technical field
The invention belongs to vehicle vibration damping technical field, be specifically related to the adjustable half active pneumatic spring in parallel of a kind of rigidity.
Background technique
The riding comfort of automobile more and more receives people's concern.In prior art, on vehicle, using more spring element majority is helical spring, and its spring rate is constant, although traditional pneumatic spring rigidity can change, but its rigidity increases gradually often when compression, during stretching, but reduce gradually, so just can not meet the requirement of many suspending apparatus or vibration damping equipment.
Summary of the invention
The object of this invention is to provide a kind of half active pneumatic spring in parallel, when can make suspending apparatus or vibration damping equipment in compression and stretching, spring rate can increase gradually, and can, according to its initial stiffness of automobile initial position load regulation, can play the effect that regulates vehicle body height simultaneously; And can, according to pavement behavior in vehicle traveling process, in real time its rigidity be regulated.
The present invention is achieved through the following technical solutions:
A half active pneumatic spring in parallel, comprises epicoele air valve 1, upper cavity pressure sensor 2A, cavity of resorption pressure transducer 2B, cylinder 3, upper gas chamber 4, seal ring 5, epicoele gas-filled pump 6A, cavity of resorption gas-filled pump 6B, floating piston 7, lower chamber 8, cavity of resorption air valve 9, epicoele tracheae 10A, cavity of resorption tracheae 10B, piston rod 11 and controller 12.
Described floating piston 7 is divided into upper gas chamber 4 and 8 two parts of lower chamber the inner space of cylinder 3, in the upper end of upper gas chamber 4, there is epicoele air valve 1, there is cavity of resorption air valve 9 bottom of lower chamber 8, piston rod 11 and floating piston 7 link together, seal ring 5 is enclosed within the outer end of floating piston 7, to guarantee that upper lower chamber has good sealing.
Described epicoele gas-filled pump 6A, cavity of resorption gas-filled pump 6B are connected with epicoele air valve 1, cavity of resorption air valve 9 by epicoele tracheae 10A, cavity of resorption tracheae 10B respectively.
Described upper cavity pressure sensor 2A, cavity of resorption pressure transducer 2B are arranged in upper-end surface and the lower end surface of cylinder 3, the gas pressure in upper gas chamber 4, lower chamber 8 is carried out to Real-Time Monitoring, and pressure signal is transported in controller 12.
The pressure signal that described controller 12 records according to two pressure transducer 2A, 2B, controls gas-filled pump 6A, 6B and air valve 1,9; When the spring rate of needs is large, controller 12 is controlled gas-filled pump 6A, 6B air chamber 4,8 inflations up and down; When the spring rate hour of needs, controller 12 is controlled air valve 1,9 and is opened, and makes lower chamber 4,8 venting.
Alternatively, the present invention also can only comprise a gas-filled pump 6, and the gas simultaneously upper lower chamber 4,8 being charged and discharged into uniform pressure is realized the symmetrical spring rigidity of adjustable size; Or it is different to realize upper lower chamber 4,8 pressure by adjusting air valve 1,9, obtain the asymmetric spring rate of adjustable size.
Working procedure of the present invention is:
1) before vehicle start, utilize the pressure signal of the upper lower chamber 4,8 that pressure transducer 2A, 2B record, utilize pressure difference can obtain the load of vehicle; By gas-filled pump 6A, 6B, from epicoele air valve 1 and cavity of resorption air valve 9, in air chamber, be filled with a certain amount of gas respectively, so both can regulate vehicle body height according to load state, also can control the initial volume of air chamber.
2), when in passive mode, air valve 1,9 is all closed:
Under the effect of extraneous active force, when piston rod 11 moves upward, promote floating piston 7 and move upward, compression upper gas chamber 4, increases the gas pressure of upper gas chamber 4 gradually, and the displacement that piston rod 11 moves up is larger, and the pressure that upper gas chamber 4 produces is larger;
When piston rod 11 moves downward, pull floating piston 7 to move downward, compression lower chamber 8, increases the pressure of lower chamber 8 gradually, and the displacement that piston rod 11 moves down is larger, and the pressure that lower chamber 8 produces is larger;
With regard to having realized spring rate, along with the increase of displacement, constantly increase like this.
3), when in half active mode, the pressure signal that controller 12 records according to two pressure transducer 2A, 2B, controls the open and close of supply gas pressure and the air valve 1,9 of gas-filled pump 6A, 6B in real time; Real-time to upper lower chamber 4,8 inflation/deflations, realize half ACTIVE CONTROL of pneumatic spring in parallel, to improve automobile ride.
The present invention is simple in structure, and cost is relatively cheap, easy for installation, when both direction moves, can produce larger elastic force, and spring rate also increases gradually; And the automobile initial load that can obtain according to upper and lower pressure sensor signal, and regulate its initial stiffness, can play the effect that regulates vehicle body height simultaneously, and can be according to pavement behavior in vehicle traveling process, in real time its rigidity is regulated, to improve riding comfort, control stability and the passing ability of vehicle.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment of the present invention.
Fig. 2 is another kind of embodiment of the present invention.
Fig. 3 is load-deflection curve of the present invention.
In figure:
1, epicoele air valve; 2A, upper cavity pressure sensor; 2B, cavity of resorption pressure transducer; 3, cylinder; 4, upper gas chamber; 5, seal ring; 6, gas-filled pump; 6A, epicoele gas-filled pump; 6B, cavity of resorption gas-filled pump; 7, floating piston; 8, lower chamber; 9, cavity of resorption air valve; 10A, epicoele tracheae; 10B, cavity of resorption tracheae; 11, piston rod; 12, controller; F, floating piston stressed; The displacement of s, floating piston.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As Fig. 1, for a kind of embodiment of the present invention, shown a kind of half active pneumatic spring in parallel, comprises epicoele air valve 1, upper cavity pressure sensor 2A, cavity of resorption pressure transducer 2B, cylinder 3, upper gas chamber 4, seal ring 5, epicoele gas-filled pump 6A, cavity of resorption gas-filled pump 6B, floating piston 7, lower chamber 8, cavity of resorption air valve 9, epicoele tracheae 10A, cavity of resorption tracheae 10B, piston rod 11 and controller 12.
Described floating piston 7 is divided into upper gas chamber 4 and 8 two parts of lower chamber the inner space of cylinder 3, in the upper end of upper gas chamber 4, there is epicoele air valve 1, there is cavity of resorption air valve 9 bottom of lower chamber 8, piston rod 11 and floating piston 7 link together, seal ring 5 is enclosed within the outer end of floating piston 7, to guarantee that upper lower chamber has good sealing.
Described epicoele gas-filled pump 6A, cavity of resorption gas-filled pump 6B are connected with epicoele air valve 1, cavity of resorption air valve 9 by epicoele tracheae 10A, cavity of resorption tracheae 10B respectively.
Described upper cavity pressure sensor 2A, cavity of resorption pressure transducer 2B are arranged in upper-end surface and the lower end surface of cylinder 3, the gas pressure in upper gas chamber 4, lower chamber 8 is carried out to Real-Time Monitoring, and pressure signal is transported in controller 12.
The pressure signal that described controller 12 records according to two pressure transducer 2A, 2B, controls gas-filled pump 6A, 6B and air valve 1,9; When the spring rate of needs is large, controller 12 is controlled gas-filled pump 6A, 6B air chamber 4,8 inflations up and down; When the spring rate hour of needs, controller 12 is controlled air valve 1,9 and is opened, and makes lower chamber 4,8 venting.
As shown in Figure 2, be an alternative embodiment of the invention, i.e. the present invention also can only comprise a gas-filled pump 6, and the gas simultaneously upper lower chamber 4,8 being charged and discharged into uniform pressure is realized the symmetrical spring rigidity of adjustable size; Or it is different to realize upper lower chamber 4,8 pressure by adjusting air valve 1,9, obtain the asymmetric spring rate of adjustable size.
Fig. 3 is load-deflection curve of the present invention, i.e. F-s curve, and the reaction force of the stressed F of floating piston is and offers extraneous elastic force, and in figure, certain some place slope of a curve is the spring rate of this point.
Working procedure of the present invention is:
1) before vehicle start, utilize the pressure signal of the upper lower chamber 4,8 that pressure transducer 2A, 2B record, utilize pressure difference can obtain the load of vehicle; By gas-filled pump 6A, 6B, from epicoele air valve 1 and cavity of resorption air valve 9, in air chamber, be filled with a certain amount of gas respectively, so both can regulate vehicle body height according to load state, also can control the initial volume of air chamber.
2), when in passive mode, air valve 1,9 is all closed:
Under the effect of extraneous active force, when piston rod 11 moves upward, promote floating piston 7 and move upward, compression upper gas chamber 4, increases the gas pressure of upper gas chamber 4 gradually, and the displacement that piston rod 11 moves up is larger, and the pressure that upper gas chamber 4 produces is larger;
When piston rod 11 moves downward, pull floating piston 7 to move downward, compression lower chamber 8, increases the pressure of lower chamber 8 gradually, and the displacement that piston rod 11 moves down is larger, and the pressure that lower chamber 8 produces is larger;
With regard to having realized spring rate, along with the increase of displacement, constantly increasing like this, as shown in solid line and dotted line in Fig. 3, is two kinds of symmetrical spring rates, and wherein solid line is under pressure minimum, the spring rate that the present invention can provide; When dotted line provides maximum inflation pressure for gas-filled pump 6A, 6B, the spring rate that the present invention can provide.
3), when in half active mode, the pressure signal that controller 12 records according to two pressure transducer 2A, 2B, controls the open and close of supply gas pressure and the air valve 1,9 of gas-filled pump 6A, 6B in real time; Real-time to upper lower chamber 4,8 inflation/deflations, realize half ACTIVE CONTROL of pneumatic spring in parallel, to improve automobile ride.
It should be noted that the spring rate in the present invention can be symmetrical, can be also asymmetrical, and this can regulate by gas-filled pump 6A, 6B.By regulating arbitrarily as required in the region that regulates the inflation pressure of upper gas chamber 4 and lower chamber 8 that the rigidity of this pneumatic spring can be in Fig. 3 be formed between solid line and dotted line.
Claims (3)
1. one and half pneumatic springs in parallel initiatively, comprise cylinder (3), upper gas chamber (4), seal ring (5), floating piston (7), lower chamber (8), epicoele tracheae (10A), cavity of resorption tracheae (10B) and piston rod (11), described floating piston (7) is divided into upper gas chamber (4) and (8) two parts of lower chamber the inner space of cylinder (3), piston rod (11) and floating piston (7) are connected, and seal ring (5) is enclosed within the outer end of floating piston (7); It is characterized in that:
Also comprise epicoele air valve (1), upper cavity pressure sensor (2A), cavity of resorption pressure transducer (2B), epicoele gas-filled pump (6A), cavity of resorption gas-filled pump (6B), cavity of resorption air valve (9) and controller (12);
Described epicoele gas-filled pump (6A), cavity of resorption gas-filled pump (6B) are connected with epicoele air valve (1), cavity of resorption air valve (9) by epicoele tracheae (10A), cavity of resorption tracheae (10B) respectively.
Described epicoele air valve (1) and upper cavity pressure sensor (2A) are arranged on the upper end of upper gas chamber (4), and cavity of resorption pressure transducer (2B) and cavity of resorption air valve (9) are arranged on the bottom of lower chamber (8);
Described upper cavity pressure sensor (2A) and cavity of resorption pressure transducer (2B) are measured respectively the gas pressure in upper gas chamber (4), lower chamber (8), and pressure signal is transported in controller (12);
The pressure signal that described controller (12) records according to two pressure transducers (2A, 2B), controls gas-filled pump (6A, 6B) and air valve (1,9).
2. according to claim 1 a kind of half pneumatic spring in parallel initiatively, is characterized in that:
Only comprise a gas-filled pump (6), upper lower chamber (4,8) is charged and discharged to the gas into uniform pressure simultaneously.
3. according to claim 1 a kind of half pneumatic spring in parallel initiatively, is characterized in that:
Only comprise a gas-filled pump (6), simultaneously to upper lower chamber (4,8) inflation/deflation, and by adjusting air valve (1,9), obtain the different pressures of upper lower chamber (4,8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751299.XA CN103644235A (en) | 2013-12-31 | 2013-12-31 | Semi-active parallel air spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751299.XA CN103644235A (en) | 2013-12-31 | 2013-12-31 | Semi-active parallel air spring |
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| CN103644235A true CN103644235A (en) | 2014-03-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257758A (en) * | 2015-10-21 | 2016-01-20 | 中国电子工程设计院 | Control method for air spring structure of variable additional air chamber |
| CN105673758A (en) * | 2016-04-11 | 2016-06-15 | 常州气弹簧有限公司 | Gas supplementing type gas spring |
| CN107953736A (en) * | 2016-10-14 | 2018-04-24 | 郑州宇通客车股份有限公司 | A kind of vehicle and its suspension interconnection type air bump module and air bump |
| CN108426084A (en) * | 2018-05-18 | 2018-08-21 | 南通东方船用设备制造有限公司 | Single-acting air spring pressure balance type actuator |
| CN110342104A (en) * | 2019-07-17 | 2019-10-18 | 蒋欣 | A kind of active shock insulation organ transplant transfer device |
| CN111322341A (en) * | 2020-03-10 | 2020-06-23 | 季华实验室 | Air spring, and control system and control method of air spring |
| CN112431884A (en) * | 2020-10-09 | 2021-03-02 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Air spring additional air chamber, air spring control assembly and vehicle |
| CN114838073A (en) * | 2022-05-22 | 2022-08-02 | 南京善工信机械有限公司 | Spring device with continuously adjustable spring characteristic |
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| EP0365317A1 (en) * | 1988-10-18 | 1990-04-25 | Aida Engineering Ltd. | Pneumatic die cushion equipment |
| DE10052663C1 (en) * | 2000-10-24 | 2002-01-03 | Festo Ag & Co | Pneumatic spring element arrangement has electronic controller for regulating quantity of air in spring element using regulating valve depending on flow meter and pressure sensor signals |
| US20030042661A1 (en) * | 2001-06-15 | 2003-03-06 | Popjoy Mark A. | Gas spring having a controllable output force |
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| CN201849277U (en) * | 2010-09-30 | 2011-06-01 | 周年山 | Automobile air suspension device |
| CN102261417A (en) * | 2011-04-27 | 2011-11-30 | 江苏大学 | Constant internal pressure air spring additional air chamber of which volume is changed continuously and operating method |
| CN203627631U (en) * | 2013-12-31 | 2014-06-04 | 吉林大学 | Semi-active parallel air spring |
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2013
- 2013-12-31 CN CN201310751299.XA patent/CN103644235A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| EP0365317A1 (en) * | 1988-10-18 | 1990-04-25 | Aida Engineering Ltd. | Pneumatic die cushion equipment |
| DE10052663C1 (en) * | 2000-10-24 | 2002-01-03 | Festo Ag & Co | Pneumatic spring element arrangement has electronic controller for regulating quantity of air in spring element using regulating valve depending on flow meter and pressure sensor signals |
| US20030042661A1 (en) * | 2001-06-15 | 2003-03-06 | Popjoy Mark A. | Gas spring having a controllable output force |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257758A (en) * | 2015-10-21 | 2016-01-20 | 中国电子工程设计院 | Control method for air spring structure of variable additional air chamber |
| CN105673758A (en) * | 2016-04-11 | 2016-06-15 | 常州气弹簧有限公司 | Gas supplementing type gas spring |
| CN107953736A (en) * | 2016-10-14 | 2018-04-24 | 郑州宇通客车股份有限公司 | A kind of vehicle and its suspension interconnection type air bump module and air bump |
| CN107953736B (en) * | 2016-10-14 | 2024-02-27 | 宇通客车股份有限公司 | Vehicle and interconnection type air damper module and air damper for suspension thereof |
| CN108426084A (en) * | 2018-05-18 | 2018-08-21 | 南通东方船用设备制造有限公司 | Single-acting air spring pressure balance type actuator |
| CN110342104A (en) * | 2019-07-17 | 2019-10-18 | 蒋欣 | A kind of active shock insulation organ transplant transfer device |
| CN110342104B (en) * | 2019-07-17 | 2021-02-26 | 蒋欣 | Active shock insulation organ transplantation transfer device |
| CN111322341A (en) * | 2020-03-10 | 2020-06-23 | 季华实验室 | Air spring, and control system and control method of air spring |
| CN112431884A (en) * | 2020-10-09 | 2021-03-02 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Air spring additional air chamber, air spring control assembly and vehicle |
| CN114838073A (en) * | 2022-05-22 | 2022-08-02 | 南京善工信机械有限公司 | Spring device with continuously adjustable spring characteristic |
| CN114838073B (en) * | 2022-05-22 | 2023-02-28 | 南京善工信机械有限公司 | Spring device with continuously adjustable spring characteristic |
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Application publication date: 20140319 |