CN104047986B - A kind of air bellow of stiffness variable - Google Patents
A kind of air bellow of stiffness variable Download PDFInfo
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- CN104047986B CN104047986B CN201410271380.2A CN201410271380A CN104047986B CN 104047986 B CN104047986 B CN 104047986B CN 201410271380 A CN201410271380 A CN 201410271380A CN 104047986 B CN104047986 B CN 104047986B
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- straight gear
- air
- air bag
- screw rod
- sleeve
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Abstract
The present invention discloses a kind of air bellow of stiffness variable of vehicle suspension system, air-bag base is fixedly connected with screw rod upper end, sleeve and straight gear is had along coaxial sleeve on screw axial, the upper end of sleeve lower end and straight gear is coaxially affixed, sleeve empty set, outside screw rod, sleeve outer peripheral surface is fixedly equipped with the first cylindrical bearing that roller is axial arranged; Straight gear is connected with screw rod by screwed hole of centre, straight gear upper surface is equipped with the second cylindrical bearing of roller radial arrangement; Air bag sets off central contact and is enclosed within outside the first cylindrical bearing, and air bag sets off bottom surface and is seated on the second cylindrical bearing; Straight gear edge connects the guiding annulus bracket freely rotated, guiding annulus bracket side is fixedly connected with track adjusting wheel, track adjusting wheel can move up and down in grooved guide rail, guiding annulus bracket is fixedly connected with the housing of electrical motor, the output shaft of electrical motor has driving gear, and driving gear engages with straight gear; Stepless adjustable by the control realization air spring rigidity to electrical motor break-make duration.
Description
Technical field
The invention belongs to the technical field of vehicle suspension system, specifically for the air bellow of vehicle suspension system.
Background technology
The rigidity of the air bellow of traditional vehicle suspension system is just immutable once determining, thus can not adapt to driving cycle complicated and changeable, cannot meet the requirement of vehicle ride comfort and operational stability.Air bellow utilizes the compressibility of gas to realize its elastic reaction, has the function of buffering, vibration isolation.The suspension system of air bellow is installed have than the better riding comfort of general suspension and travelling comfort.If carry out reasonable adjusting to air spring rigidity in driving procedure, suspension system can be made reasonably to be mated with vehicle performance.
Air bellow can be divided into bellows, membrane type two kinds by structural shape.The rigidity of bellows type air spring is comparatively large, and the method increasing auxiliary tank can be adopted to reduce the rigidity of air bellow, and diaphragm type air spring equally also can obtain less rigidity by increasing auxiliary chamber.Diaphragm type air spring rigidity can be found except outside the Pass having with volume size according to air spring rigidity formula, also relevant with payload space rate of change, and payload space rate of change and effective diameter rate of change have close relationship, consult pertinent literature known effective diameter rate of change and depend on piston-shaped.Due to the particularity of diaphragm type air spring structure, the rigidity of spring can be changed by the method changing base shape.
Prior art great majority are by increasing auxiliary chamber and the size changing auxiliary chamber changes the rigidity of air bellow, this method by increasing auxiliary chamber has level adjustable often, general is all adopt rigidity sectional type to control, namely the rigidity of spring be divided into soft, in, hard third gear, this stiffness tuning is not continuous print, and more wishes that rigidity is the stepless adjustable change that just can better adapt to the situation on road surface for the road surface of reality.And the volume of auxiliary chamber is often very large, even has three to four-fold in air bellow size, makes troubles to installation, and this just limited car load space of waste.
Summary of the invention
The object of this invention is to provide a kind of air bellow of stiffness variable, without the need to auxiliary chamber, by compressing or release air bag from lifting mechanism, thus changing air bellow payload space, obtaining ideal stiffness characteristics, realizing the stepless adjustable of air spring rigidity.
The technical solution used in the present invention: the present invention includes an air bag, air-bag base is fixedly connected with in the middle of bottom air bag, air bag basal surface and air bag set off upper surface and contact, air-bag base is fixedly connected with the upper end of screw rod, the lower end of screw rod is fixedly connected with vehicle frame, axially coaxial sleeve along screw rod has sleeve and straight gear, the lower end of sleeve and the upper end of straight gear are coaxially fixed together, sleeve empty set, outside screw rod, the outer peripheral surface of sleeve is fixedly equipped with the first cylindrical bearing that roller is axial arranged; Straight gear is connected with screw rod by screwed hole of centre, and the external diameter of straight gear is greater than the external diameter of sleeve, and the upper surface of straight gear is equipped with the second cylindrical bearing of roller radial arrangement; The central contact that air bag sets off is enclosed within outside the first cylindrical bearing, and the bottom surface that air bag sets off is seated on the second cylindrical bearing; The edge of straight gear connects the guiding annulus bracket freely rotated, and the side of guiding annulus bracket is fixedly connected with track adjusting wheel, and track adjusting wheel can move up and down in grooved guide rail, and grooved guide rail is fixedly connected with vehicle frame; Guiding annulus bracket is fixedly connected with the housing of electrical motor, and the output shaft of electrical motor has driving gear, and driving gear engages with straight gear.
The invention has the beneficial effects as follows:
1, stepless adjustable by the control realization air spring rigidity of electrical motor break-make duration of the present invention, and only need switching motor rotating can increase or reduce rigidity.
2, be directly installed on bottom air bag from lifting mechanism in the present invention, become a relatively-movable entirety with screw rod, therefore can not take very large space as auxiliary chamber, saved limited car load space
3, structure of the present invention is simple, and productive costs is low, dependable performance.
Accompanying drawing explanation
Structure for a more complete understanding of the present invention and principle of work, be described in further detail the present invention with detailed description of the invention in conjunction with the following drawings.
Fig. 1 is the structural representation of (bottom dead center position) before the air bellow compression of a kind of stiffness variable of the present invention;
Fig. 2 is from lifting structural scheme of mechanism in Fig. 1;
Fig. 3 be eliminate in Fig. 2 that air bag sets off 3, structure enlarged diagram after vehicle frame 7 and grooved guide rail 10;
Fig. 4 is the structural representation of (top dead center position) after the air bellow compression of a kind of stiffness variable of the present invention;
Fig. 5 is the present invention's full-vehicle control schematic diagram in use.
In figure: 1. air bag top cover; 2. air bag; 3. air bag sets off; 4. lead annulus bracket; 5.1. sleeve; 5.2. the cylindrical bearing on sleeve; 5.3. the cylindrical bearing in straight gear; 5.4. straight gear; 6. screw rod; 6a. screw rod bottom dead point; 6b. screw rod top dead point; 7. vehicle frame; 8. electrical motor; 9. track adjusting wheel; 10. grooved guide rail; 11. air-bag bases; 12. controllers; 13. car speed sensors; 14. pressure sensors.
Detailed description of the invention
Fig. 1 is the structure before the present invention compresses, and specifically refer to structure when air bellow is in the screw rod bottom dead point 6a of screw rod 6, now, when air bag 2 is uncompressed, air spring rigidity is minimum.Again see Fig. 2, the present invention includes an air bag 2, the top of air bag 2 is air bag top cover 1, is fixedly connected with air-bag base 11 in the middle of the bottom of air bag 2, and the upper surface that the basal surface of air bag 2 and air bag set off 3 contacts.
Arrange one in the below of air bag 2 from lifting mechanism, then see Fig. 3, comprise screw rod 6, sleeve 5.1, straight gear 5.4, electrical motor 8, track adjusting wheel 9, grooved guide rail 10 etc. from lifting mechanism.Air-bag base 11 is fixed on the upper end of screw rod 6, and the lower end of screw rod 6 is fixedly connected with vehicle frame 7, and screw rod 6 is perpendicular with vehicle frame 7, and the diameter of screw rod 6 need meet rigidity requirement.Axially coaxial sleeve along screw rod 6 has sleeve 5.1 and straight gear 5.4, wherein, the lower end of sleeve 5.1 and the upper end edge coaxial direction of straight gear 5.4 are fixed and welded together, sleeve 5.1 and screw rod 6 have free-running fit, and the internal diameter of sleeve 5.1 is greater than the external diameter of screw rod 6, and sleeve 5.1 empty set is outside screw rod 6, when screw rod 6 rotates, sleeve 5.1 does not follow rotation, and the outer peripheral surface of sleeve 5.1 is fixedly equipped with cylindrical bearing 5.2, and the roller of cylindrical bearing 5.2 is axial arranged.
The center of straight gear 5.4 is tapped bore, and straight gear 5.4 is connected with screw rod 6 by tapped bore, because helicitic texture has self-lock ability, so current location can be kept to immobilize when straight gear 5.4 rotates to diverse location and not need extra catch gear.The external diameter of straight gear 5.4 is greater than the external diameter of sleeve 5.1, and the upper surface of straight gear 5.4 is equipped with cylindrical bearing 5.3, the roller radial arrangement of cylindrical bearing 5.2.The central contact that air bag sets off 3 is enclosed within outside cylindrical bearing 5.2, make cylindrical bearing 5.2 and air bag set off 3 inner surfaces to contact, play restriction air bag and set off 3 effects moved radially, simultaneously, the bottom surface that air bag sets off 3 is seated on cylindrical bearing 5.3, and cylindrical bearing 5.3 is used for support air bag and sets off 3.
Have a circle upper groove in the upper edge of straight gear 5.4, lower edge has a circle low groove, guiding annulus bracket 4 to be enclosed within upper and lower groove and freely can to rotate along upper and lower groove.The upper surface, side of guiding annulus bracket 4 and lower surface all extend to the outside of straight gear 5.4 along the radial direction of straight gear 5.4, and upper surface is fixedly connected with a track adjusting wheel 9 respectively with the extending end place of lower surface, two track adjusting wheels 9 are arranged in grooved guide rail 10 one on the other, can simultaneously vertically movement up and down in grooved guide rail 10, the stroke that track adjusting wheel 9 moves up and down is by the restriction of screw rod 6 bottom dead point 6a and top dead point 6b.Grooved guide rail 10 is vertically fixed on vehicle frame 7, and grooved guide rail 10 and screw rod 6 are in the same way and parallel.Between the upper surface and lower surface of the extension of guiding annulus bracket 4, electrical motor 8 is set, the housing of electrical motor 8 is fixed on guiding annulus bracket 4, the output shaft of electrical motor 8 installs driving gear, and driving gear engagement straight gear 5.4, drives straight gear 5.4 to rotate by electrical motor 8.The effect of guiding annulus bracket 4 is mainly for the installation of electrical motor 8 and track adjusting wheel 9 provides support.
See the structure after the air bellow compression of Fig. 4, structure when specifically finger air bellow is in top dead point 6b.After electrical motor 8 drives straight gear 5.4 to rotate, straight gear 5.4 moves up along screw rod 6, the annulus bracket 4 that simultaneously leads also moves up along grooved guide rail 10 with electrical motor 8 under the effect of track adjusting wheel 9, lifting air bag sets off 3, during arrival top dead point 6b position, electrical motor 8 stops action, obtains air bellow maximum rigidity in compression rear gasbag 2 and stroke range.Air bag sets off 3 and directly contacts with air-spring bellows 2, and owing to contacting with the cylindrical bearing 5.3 in straight gear 5.4 with the cylindrical bearing 5.2 on sleeve 5.1, therefore air bag sets off 3 and can not rotate along with the rotation of straight gear 5.4, only can move up and down along screw rod 6 axis direction, thus reliability when ensure that compression and release air bellow.
See Fig. 5, the suspension system of car load adopts four air bellows of the present invention, is arranged on four wheels respectively by four of four air bellows electrical motors 8, by four electrical motors 8 by wire connecting power and controller 12 action.The signal that controller 12 utilizes car speed sensor 13 to transmit matches with the air spring rigidity value preset, the air bellow internal pressure that under finding this speed of a motor vehicle operating mode, required rigidity is corresponding.Carry out spacing to the lifting travel of straight gear 5.4 in advance, the top dead point 6b of regulation screw rod 6 and bottom dead point 6a, with bottom dead point 6a for initial position.The internal pressure of air bag 2 in air bellow is monitored by pressure sensor 14, controller 12 receives and processes the signal that car speed sensor 13 transmits, and match with the data prestored, the air spring rigidity that different speed of a motor vehicle road conditions are corresponding different, controller 12 or can control separately the forward or reverse of four electrical motors 8 simultaneously.When the internal pressure of the air bag 2 that pressure sensor 14 monitors reaches pairing pressure, controller 12 simultaneously or make separately four electrical motors 8 stop action, thus can obtain the air spring rigidity that needs.Be specially, when entering high speed from low speed, controller 12 receives the signal that process car speed sensor 13 transmits, when being necessary to increase air spring rigidity, controller 12 is connected electrical motor 8 and is rotated forward, electrical motor 8 drive straight gear 5.4 rotate forward lifting along screw rod 6, the annulus bracket 4 that simultaneously leads also moves up along grooved guide rail 10 with electrical motor 8 under the effect of track adjusting wheel 9, air bag sets off 3 and is subject to straight gear 5.4 and acts on upwardly air bag 2, rigidity increases gradually, during arrival top dead point 6b, electrical motor 8 must stop action, and now air spring rigidity is maximum.When entering low speed from high speed, controller 12 receives and processes the signal that car speed sensor 13 transmits, when being necessary to reduce air spring rigidity, controller 12 is oppositely connected electrical motor 8 and is reversed, electrical motor 8 drives straight gear 5.4 to decline along screw rod 6 reversion, the annulus bracket 4 that simultaneously leads also moves down along grooved guide rail 10 with electrical motor 8 under the effect of track adjusting wheel 9, air bag sets off 3 release air bags 2 gradually, but contact with air bag 2 all the time, rigidity reduces gradually, during arrival bottom dead point 6a, electrical motor 8 must stop action, and now air spring rigidity is minimum.
If be equipped with different control policies, except changing except air spring rigidity under the different speed of a motor vehicle, multiple different control effects can also be obtained, such as improve front-wheel air spring rigidity when braking and can obtain better earth-grasping force, improve air spring rigidity in outboard wheels when turning to and can obtain good turning efficiency.
For the different speed of a motor vehicle and road conditions, due to Real-Time Monitoring can be carried out by car speed sensor 13 pairs of speed of a motor vehicle, therefore vehicle can be made to utilize controller 12 to change the rigidity of each air bellow on one's own initiative according to the quality travelling road conditions, reach the requirement improving vehicle ride comfort and handling stability.
Claims (5)
1. the air bellow of a stiffness variable, comprise an air bag (2), air bag (2) is fixedly connected with air-bag base (11) in the middle of bottom, air bag (2) basal surface and air bag set off (3) upper surface and contact, it is characterized in that: air-bag base (11) is fixedly connected with the upper end of screw rod (6), the lower end of screw rod (6) is fixedly connected with vehicle frame (7), axially coaxial sleeve along screw rod (6) has sleeve (5.1) and straight gear (5.4), the lower end of sleeve (5.1) and the upper end of straight gear (5.4) are coaxially fixed together, sleeve (5.1) empty set at screw rod (6) outward, the first cylindrical bearing (5.2) that roller is axial arranged the outer peripheral surface of sleeve (5.1) is fixedly equipped with, straight gear (5.4) is connected with screw rod (6) by screwed hole of centre, the external diameter of straight gear (5.4) is greater than the external diameter of sleeve (5.1), and the upper surface of straight gear (5.4) is equipped with second cylindrical bearing (5.3) of roller radial arrangement, the central contact that air bag sets off (3) is enclosed within the first cylindrical bearing (5.2) outward, and the bottom surface that air bag sets off (3) is seated on the second cylindrical bearing (5.3), the edge of straight gear (5.4) connects the guiding annulus bracket (4) freely rotated, the side of guiding annulus bracket (4) is fixedly connected with track adjusting wheel (9), track adjusting wheel (9) can move up and down in grooved guide rail (10), and grooved guide rail (10) is fixedly connected with vehicle frame (7), guiding annulus bracket (4) is fixedly connected with the housing of electrical motor (8), and the output shaft of electrical motor (8) has driving gear, and driving gear engages with straight gear (5.4).
2. the air bellow of a kind of stiffness variable according to claim 1, it is characterized in that: the upper edge of straight gear (5.4) has a circle upper groove, lower edge has a circle low groove, guiding annulus bracket (4) is enclosed within upper and lower groove and also freely can rotates along upper and lower groove; The upper surface, side of guiding annulus bracket (4) and lower surface all extend to the outside of straight gear (5.4) along the radial direction of straight gear (5.4), and upper surface and the extending end place of lower surface are fixedly connected with a track adjusting wheel (9) respectively, two track adjusting wheels (9) are located in grooved guide rail (10) one on the other.
3. the air bellow of a kind of stiffness variable according to claim 2, is characterized in that: between the upper surface and lower surface of the extension of guiding annulus bracket (4), arrange electrical motor (8).
4. the air bellow of a kind of stiffness variable according to claim 1, is characterized in that: grooved guide rail (10) is vertically fixedly connected with vehicle frame (7), and grooved guide rail (10) and screw rod (6) are in the same way and parallel.
5. the air bellow of a kind of stiffness variable according to claim 1, it is characterized in that: screw rod (6) has bottom dead point (6a) and top dead point (6b), the stroke that track adjusting wheel (9) moves up and down is subject to the restriction of bottom dead point (6a) and top dead point (6b); Set off (3) at air bag to be subject to straight gear (5.4) and to act on electrical motor (8) when upwardly air bag (2) arrives described top dead point (6b) and must stop action, when air bag sets off (3) release air bag (2) arrives described bottom dead point (6a) gradually, electrical motor (8) must stop action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271380.2A CN104047986B (en) | 2014-06-18 | 2014-06-18 | A kind of air bellow of stiffness variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271380.2A CN104047986B (en) | 2014-06-18 | 2014-06-18 | A kind of air bellow of stiffness variable |
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| Publication Number | Publication Date |
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| CN104047986A CN104047986A (en) | 2014-09-17 |
| CN104047986B true CN104047986B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410271380.2A Expired - Fee Related CN104047986B (en) | 2014-06-18 | 2014-06-18 | A kind of air bellow of stiffness variable |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696413A (en) * | 2015-03-19 | 2015-06-10 | 柳州市永益机械制造有限公司 | Compound air spring filled with fillers |
| CN109083964B (en) * | 2018-08-31 | 2020-11-24 | 江苏科技大学 | Air spring volume adjusting mechanism and application and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623994A (en) * | 2008-07-08 | 2010-01-13 | 贺勍 | Novel air spring rigidity adaptive continuous adjustment system |
| CN201615822U (en) * | 2009-12-29 | 2010-10-27 | 浙江吉利汽车研究院有限公司 | Supporting device for automobile modal test |
| DE102010023660A1 (en) * | 2010-06-12 | 2011-12-15 | Daimler Ag | Air compressor device for motor car, has valve comprising valve element for changing pressure-controlled operation behavior of valve against another valve, where valve element is designed as spring element with different rigidities |
| CN102774250A (en) * | 2011-05-09 | 2012-11-14 | 贺劼 | Adaptive differential pressure and volumetric combined adjustment system for rigidity of air spring |
| CN103410905A (en) * | 2013-07-31 | 2013-11-27 | 江苏大学 | Combined air spring integrated with coil spring with additional air chamber with adjustable volume |
-
2014
- 2014-06-18 CN CN201410271380.2A patent/CN104047986B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623994A (en) * | 2008-07-08 | 2010-01-13 | 贺勍 | Novel air spring rigidity adaptive continuous adjustment system |
| CN201615822U (en) * | 2009-12-29 | 2010-10-27 | 浙江吉利汽车研究院有限公司 | Supporting device for automobile modal test |
| DE102010023660A1 (en) * | 2010-06-12 | 2011-12-15 | Daimler Ag | Air compressor device for motor car, has valve comprising valve element for changing pressure-controlled operation behavior of valve against another valve, where valve element is designed as spring element with different rigidities |
| CN102774250A (en) * | 2011-05-09 | 2012-11-14 | 贺劼 | Adaptive differential pressure and volumetric combined adjustment system for rigidity of air spring |
| CN103410905A (en) * | 2013-07-31 | 2013-11-27 | 江苏大学 | Combined air spring integrated with coil spring with additional air chamber with adjustable volume |
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| CN104047986A (en) | 2014-09-17 |
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Granted publication date: 20160406 Termination date: 20170618 |