CN102582417B - Speed-reducing type wheel electric drive system of electric vehicle - Google Patents
Speed-reducing type wheel electric drive system of electric vehicle Download PDFInfo
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- CN102582417B CN102582417B CN201210043300.9A CN201210043300A CN102582417B CN 102582417 B CN102582417 B CN 102582417B CN 201210043300 A CN201210043300 A CN 201210043300A CN 102582417 B CN102582417 B CN 102582417B
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Abstract
The invention discloses a speed-reducing type wheel electric drive system of an electric vehicle. A hub is supported on a wheel support shaft on a suspension steering knuckle through a hub bearing; a first-level speed reducing gear pair is in transmission with a second-level speed reducing gear pair; a motor shaft of a wheel drive motor is in pivot joint with a slider of a sliding guide pair; a guide rail of the sliding guide pair is vertically fixed on the suspension steering knuckle; the wheel drive motor can relatively slide on the suspension steering knuckle in the vertical direction; and the slider and the suspension steering knuckle are borne by a dynamic vibration reducing spring and a dynamic vibration reducing damper. According to the invention, through the movable connection design between a drive motor and a speed reducing transmission mechanism, the dead weight of the drive motor is transformed into the mass of a dynamic vibration reducer, and thus the vibration reducing function of the dynamic vibration reducer can be realized without needing additional mass block of the dynamic vibration reducer. Through the invention, the unsprung mass of the wheel electric drive system is effectively reduced, and the dead weight of the drive motor generates an effect of reducing the negative effect of the unsprung mass of the wheel electric drive system.
Description
Technical field
The present invention relates to electric automobile chassis and drive technology field, especially a kind of speed-reducing type wheel power drive system that utilizes drive motor deadweight to realize the electronlmobil of vibration-damping function.
Background technology
The wheel limit power drive system of electronlmobil refer to drive motor be arranged in drive wheel or drive wheel near, power by motor directly or be delivered to wheel through speed reduction gearing, thereby drive the drive form of vehicle.Because wheel limit power drive system has omitted the device such as power-transfer clutch, universal-joint, transmission shaft and diff of orthodox car, therefore make it compare and concentrate motor to drive to have unique advantage: complete vehicle structure succinctly, can utilize space large; Messenger chain is short, drive system driving efficiency is higher; Each drive wheel torque is independent controlled, and chassis system dynamics Controlling is more flexible, convenient etc.
But, because wheel limit power drive system in wheel or near wheel, therefore makes each drive wheel unsprung weight greatly increase the component integrations such as motor, speed reduction gearing and drg, generally can have a negative impact to tire ground connection property, ride comfort.In order to alleviate this adverse effect, can adopt the method that installs dynamic shock-absorber additional, as Michelin's driving wheel adopts a kind of automatically controlled active suspension; Also can in wheel, install a set of spring damping quality system additional.But the former system cost is higher, latter, because of narrow space in wheel rim, can only adopt the dynamic shock-absorber of less quality, and its damping of vibrations is limited.
Summary of the invention
The applicant is very heavy for the above-mentioned existing limit power drive system unsprung weight of taking turns, the shortcomings such as damping of vibrations is limited, a kind of speed-reducing type wheel power drive system of electronlmobil of compact conformation is provided, transmission is efficient, can effectively subdue unsprung weight vibration negative effect, be conducive to take turns the high-speed small-size of limit drive motor.
The technical solution adopted in the present invention is as follows:
A speed-reducing type wheel power drive system for electronlmobil, wheel hub is supported on the wheel support axle on suspension steering swivel by hub bearing; Primary speed-down gear pair is made up of with the one-level driven gear that is fixed on tween drive shaft the one-level driving gear that is fixed on motor shaft, connects therebetween by primary speed-down gear pair center rod; Double-reduction gear pair is made up of with the secondary driven gear that is fixed on wheel support axle the secondary driving gear that is fixed on tween drive shaft, connects therebetween by double-reduction gear sub-center connecting rod; The motor shaft of wheel limit drive motor is articulated on the slide block of slide-and-guide pair, the vertical guide rail that is fixed with slide-and-guide pair on suspension steering swivel, take turns limit drive motor can along vertical on suspension steering swivel relative sliding, between slide block and suspension steering swivel by dynamic damper spring and dynamically damper carrying.
Beneficial effect of the present invention is as follows:
The present invention connects design by movable between drive motor and reduction gearing mechanism, and drive motor deadweight is converted into dynamic shock-absorber quality, thereby without the vibration-damping function that installs in addition dynamic shock-absorber mass additional and can realize dynamic shock-absorber.In effectively reducing wheel limit power drive system unsprung weight, also make drive motor deadweight produce the effect of subduing wheel limit power drive system unsprung weight negative effect like this.
Brief description of the drawings
Fig. 1 is front view of the present invention.
Fig. 2 is the birds-eye view of Fig. 1.
In figure: 1, wheel limit drive motor; 2, suspension steering swivel; 3, slide-and-guide pair; 4, dynamic damper spring; 5, dynamic damper; 6, one-level driving gear; 7, one-level driven gear; 8, secondary driving gear; 9, secondary driven gear; 10, wheel hub; 11, hub bearing; 12, primary speed-down gear pair center rod; 13, double-reduction gear sub-center connecting rod; 14, brake wheel; 15, motor shaft; 16, tween drive shaft; 17, wheel support axle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1 and Figure 2, primary speed-down gear pair is made up of with the one-level driven gear 7 that is fixed on tween drive shaft 16 the one-level driving gear 6 that is fixed on motor shaft 15 output shafts; Double-reduction gear pair is made up of with the secondary driven gear 9 that is fixed on wheel hub 10 the secondary driving gear 8 that is fixed on tween drive shaft 16; Wheel hub 10 connects firmly with secondary driven gear 9 coaxial lines, and is supported on the wheel support axle 17 on suspension steering swivel 2 by hub bearing 11, around the axis rotation of wheel support axle 17.
The two ends of primary speed-down gear pair center rod 12 are respectively hinged by a turning pair and motor shaft 15 and tween drive shaft 16, and turning pair axis respectively with the dead in line of hinged motor shaft 15 and tween drive shaft 16.The two ends of double-reduction gear sub-center connecting rod 13 are respectively hinged with a turning pair and tween drive shaft 16 and wheel support axle 17, and turning pair axis respectively with the dead in line of hinged tween drive shaft 16 and wheel support axle 17; Brake wheel 14 connects firmly mutually with wheel hub 10.
The motor shaft 15 of wheel limit drive motor 1 is articulated on the slide block of slide-and-guide pair 3, the vertical guide rail that is fixed with slide-and-guide pair 3 on suspension steering swivel 2, take turns limit drive motor 1 can along vertical on suspension steering swivel 2 relative sliding, between slide block and suspension steering swivel 2, carry by dynamic damper spring 4 and dynamic damper 5.This structure makes the deadweight of taking turns limit drive motor 1 not reconstruct the component part of unsprung weight, but is converted into dynamic shock-absorber quality, and therefore the increase of unsprung weight will greatly reduce.Simultaneously, by parameter matching optimal design, also can form the dynamic shock-absorber being formed by wheel limit drive motor quality 1, dynamically damper spring 4 and dynamic damper 5, further subdue the vibration negative effect that unsprung weight produces, thereby improve the vertical performance of vehicle, in the time of Vehicle Driving Cycle, offset the vibration of jolting and causing with decay at inside wheel, thereby greatly subdued the vibration that passes to again main vehicle body.
When real work, the outputting power of wheel limit drive motor 1, passes to wheel hub 10 via primary speed-down gear pair, the secondary increasing of slowing down of double-reduction gear after turning round, and drives wheel to advance; Simultaneously, the deadweight quality of wheel limit drive motor 1, via dynamic damper spring 4 and dynamic damper 5, can be with respect to suspension steering swivel 2, along the relative sliding direction vibration of vertical slide-and-guide pair 3, consequent vibratory force, acts on suspension steering swivel 2 and wheel, can subdue the vibration negative effect producing due to unsprung weight.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention is referring to claim, and without prejudice to spirit of the present invention in the situation that, the present invention can do any type of amendment.
Claims (1)
1. a speed-reducing type wheel power drive system for electronlmobil, wheel hub (10) is supported on the wheel support axle (17) on suspension steering swivel (2) by hub bearing (11), it is characterized in that:
---primary speed-down gear pair by be fixed on the one-level driving gear (6) of motor shaft (15) and be fixed on tween drive shaft (16) one-level driven gear (7) form, therebetween by primary speed-down gear pair center rod (12) connect; The two ends of primary speed-down gear pair center rod (12) are respectively hinged by a turning pair and motor shaft (15) and tween drive shaft (16), and turning pair axis respectively with the dead in line of hinged motor shaft (15) and tween drive shaft (16);
---double-reduction gear pair by be fixed on the secondary driving gear (8) of tween drive shaft (16) and be fixed on wheel support axle (17) secondary driven gear (9) form, therebetween by double-reduction gear sub-center connecting rod (13) connect; The two ends of double-reduction gear sub-center connecting rod (13) are respectively hinged with a turning pair and tween drive shaft (16) and wheel support axle (17), and turning pair axis respectively with the dead in line of hinged tween drive shaft (16) and wheel support axle (17);
---the motor shaft (15) of wheel limit drive motor (1) is articulated on the slide block of slide-and-guide pair (3), the upper vertical guide rail that is fixed with slide-and-guide pair (3) of suspension steering swivel (2), taking turns limit drive motor (1) can, along vertical at the upper relative sliding of suspension steering swivel (2), carry by dynamic damper spring (4) and dynamic damper (5) between slide block and suspension steering swivel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043300.9A CN102582417B (en) | 2012-02-24 | 2012-02-24 | Speed-reducing type wheel electric drive system of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043300.9A CN102582417B (en) | 2012-02-24 | 2012-02-24 | Speed-reducing type wheel electric drive system of electric vehicle |
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| Publication Number | Publication Date |
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| CN102582417A CN102582417A (en) | 2012-07-18 |
| CN102582417B true CN102582417B (en) | 2014-11-05 |
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| CN201210043300.9A Active CN102582417B (en) | 2012-02-24 | 2012-02-24 | Speed-reducing type wheel electric drive system of electric vehicle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832271A (en) * | 2014-02-27 | 2014-06-04 | 浙江工业大学之江学院工业研究院 | Independent drive independent steering mechanism of electric vehicle |
| CN108274988B (en) * | 2017-01-06 | 2022-12-06 | 罗伯特·博世有限公司 | Wheel-side electric driving system with dynamic vibration absorption function |
| CN109866605A (en) * | 2017-12-01 | 2019-06-11 | 湖北省专用汽车研究院 | A kind of gear assembly of electric wheel motor suspension |
| CN112477583B (en) * | 2020-12-09 | 2022-03-29 | 吉林大学青岛汽车研究院 | Power assembly system in wheel of combination dynamic vibration absorber |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398140Y (en) * | 1999-11-10 | 2000-09-27 | 林少芬 | Electric hub device |
| JP2007161022A (en) * | 2005-12-12 | 2007-06-28 | Bridgestone Corp | In-wheel motor system |
| EP1961602A4 (en) * | 2005-12-12 | 2009-01-07 | Bridgestone Corp | In-wheel motor system |
| CN102092256B (en) * | 2011-03-07 | 2012-09-19 | 同济大学 | Structure and method for reducing equivalent unsprung weight of wheel-rim electrically-driven system of single trailing arm type suspension |
| CN202480864U (en) * | 2012-02-24 | 2012-10-10 | 无锡永凯达齿轮有限公司 | Decelerating type wheel edge electric drive system of electric automobile |
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| CN102582417A (en) | 2012-07-18 |
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