CN102555772A - Speed reduction type hub driving system with function of power shock absorption - Google Patents
Speed reduction type hub driving system with function of power shock absorption Download PDFInfo
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- CN102555772A CN102555772A CN2012100112455A CN201210011245A CN102555772A CN 102555772 A CN102555772 A CN 102555772A CN 2012100112455 A CN2012100112455 A CN 2012100112455A CN 201210011245 A CN201210011245 A CN 201210011245A CN 102555772 A CN102555772 A CN 102555772A
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Abstract
The invention discloses a speed reduction type hub driving system with a function of power shock absorption. Power is outputted to a primary speed-reduction small cylindrical gear by a motor through a motor output shaft, the primary speed-reduction small cylindrical gear is meshed with a primary speed-reduction large cylindrical gear to transmit power, the primary speed-reduction large cylindrical gear is fixedly connected with a secondary speed-reduction small bevel gear, the central axis of the primary speed-reduction large cylindrical gear and the central axis of the secondary speed-reduction small bevel gear are coaxial, the secondary speed-reduction small bevel gear is meshed with a secondary speed-reduction large bevel gear to output power to a half shaft, an external spline is arranged on the half shaft at a section extending into a hub, and power is transmitted to a rim through the hub. The motor is suspended to a speed reduction box, a knuckle and a guide sleeve through a power shock absorber damping element and a power shock absorber elastic element, wherein the speed reduction box, the knuckle and the guide sleeve are connected together. The motor further serves as a power shock absorber mass besides outputting power, and vertical performance of a vehicle can be improved by properly adjusting parameters of the power shock absorber damping element and the power shock absorber elastic element. The speed reduction type hub driving system has the advantages that the motor weight is converted from unsprung weight into power shock absorber weight, and the speed reduction type hub driving system is low in production cost, high in transmission efficiency and beneficial to development of advantages of the high-speed motor which is high in power and power intensity.
Description
Technical field
The present invention relates to electric automobile chassis and transmission field, particularly a kind of slowdown type wheel limit drive system with dynamic absorber effect.
Background technology
At present, its keystone configuration characteristic of wheel limit power drive system that with the electric drive wheel is representative is that drive motor is installed in the drive wheel or near the drive wheel, has advantages such as the messenger chain of driving is short, transmission is efficient, compact conformation.Simultaneously; Wheel limit each driving wheel torque of drive system can independently be controlled, and wheel motor is the message unit of automobile, is again the rapid-action control execution unit; Help realizing being difficult on the orthodox car high performance control function that realizes, thereby improve the rideability under the abominable pavement conditions.
But general wheel limit drive system because of in wheel limit/wheel, having introduced parts such as drive motor, retarder, causes the car load unsprung weight significantly to increase, and directly has influence on wheel ground connection property, vehicle body ride comfort.On wheel, installing dynamic vibration absorber additional is a kind of effective ways that solve the excessive vertical negative effect of vehicle that causes of unsprung weight.But traditional dynamic vibration absorber mode needs the extra mass that on wheel, suspends, and this has taken the space on the one hand, has also increased complete vehicle curb weight, thereby reduces continual mileage.In addition, receive the influence of above-mentioned factor, the dynamic vibration absorber quality that installs additional is unsuitable excessive, thereby the absorbing effect of playing is limited.
The patent US7614467B2 In-wheel motor system having damping mechanism of BRIDGESTONE company application is through being suspended in wheel with motor; With the flexible couplings device motor power directly is passed to wheel; This has not only reduced unsprung weight; And motor quality also is converted into the bump leveller quality, but retarder in the belt wheel not.
Summary of the invention
Technical matters to be solved by this invention is that a kind of slowdown type wheel limit drive system with dynamic absorber effect will be provided, and motor is suspended in wheel in this system, thereby motor quality is transformed for the dynamic vibration absorber quality by unsprung weight.The present invention adopts the slowdown type type of drive, is a pair of common dead axle cylindrical wheel and common dead axle conical gear pair, has low cost of manufacture, driving efficiency height, and helps bringing into play the advantage that high-speed electric expreess locomotive efficient is high, power density is big.
In order to solve above technical matters; The invention provides a kind of slowdown type wheel limit drive system, comprise bump leveller pilot bar, motor output shaft, first order deceleration big column gear, second stage deceleration small conical gear, the non-rotating element of brake system, brake system rotating element, second stage deceleration large conical gear, dynamic vibration absorber elastic element, dynamic vibration absorber damping element, motor, first order deceleration small cylinder gear and guide thimble with dynamic absorber effect; Power exports first order deceleration small cylinder gear by motor to through motor output shaft; First order deceleration small cylinder gear and first order deceleration big column gear mesh are with transferring power; First order deceleration big column gear is affixed and central axis is coaxial with second stage deceleration small conical gear; Deceleration small conical gear in the second stage is through meshing with second stage deceleration large conical gear; Output power to semiaxis, semiaxis stretches into the wheel hub section and is shaped on male splines, the wheel hub through being shaped on female splines with transmission of power to wheel rim; Wheel hub is with wheel rim and the brake system rotating element is affixed and rotation.Motor output shaft matches with first order deceleration small cylinder gear, and in order to transferring power, and motor output shaft can be along the slow down central axial direction slide relative of small cylinder gear of the first order.First order deceleration small cylinder gear is supported on the deceleration box through two bearings, and it is with respect to the drop-gear box physical efficiency and only can do the rotation around self central axis.First order deceleration big column gear is affixed and central axis is coaxial with second stage deceleration small conical gear, and is supported on the deceleration box through two bearings, and it is with respect to the drop-gear box physical efficiency and only can do the rotation around self central axis.
Said motor is suspended on the deceleration box-steering swivel-guide thimble that is fixed together through dynamic vibration absorber damping element and dynamic vibration absorber elastic element; Motor also serves as the effect of dynamic vibration absorber mass except that outputting power, improve the vertical performance of vehicle through suitable adjustment dynamic vibration absorber damping element and dynamic vibration absorber elastic element parameter.
Motor output shaft matches with first order deceleration small cylinder gear, and in order to transferring power, motor output shaft is along the central axial direction slide relative of first order deceleration small cylinder gear.
Said bump leveller pilot bar is fixed in motor; Slide along the guide thimble central axial direction; Guide thimble and deceleration box, the non-rotating element of brake system and steering swivel Joint; The guide thimble central axis is parallel to the motor output shaft central axis, to avoid at motor when the guide thimble central axis slides and the interference between motor output shaft and the transmission of first order deceleration small cylinder gear.Motor has motion when the guide thimble central axial direction is slided in vertical direction, plays vertical dynamic vibration absorber effect.
The slowdown type wheel limit drive system brake system that said motor serves as dynamic vibration absorber adopts plate disc brake or drum brake mechanism.
Second stage deceleration large conical gear and semiaxis join, and the two can not do relative motion, and second stage deceleration large conical gear central axis and semiaxis central axis coincide.Semiaxis is supported on the deceleration box through two bearings, can and only can do rotatablely moving around self central axis with respect to deceleration box.Link to each other with spline between semiaxis and the wheel hub, can not do relative motion, only play the effect of transferring power.Do not have relative motion between wheel rim, wheel hub, brake system rotating element, semiaxis, the second stage deceleration large conical gear, they can and only can do identical the rotatablely moving of cireular frequency with respect to deceleration box around the wheel center axis.
Each that wheel bore is passed to the wheel hub affixed with it to power via wheel rim.Matching with the inner ring of hub bearing in the outer ring of wheel hub, does not have relative motion.Matching with the inner ring of steering swivel in the outer ring of hub bearing, does not have relative motion.Wheel be passed to wheel hub each be passed to steering swivel to power via hub bearing.Hub bearing inner ring and outer ring can and only can relatively rotate, so wheel rim, wheel hub, brake system rotating element, semiaxis and second stage deceleration large conical gear can and only can relatively rotate between the deceleration box-steering swivel that is consolidated in-guide thimble.
It is axis that motor and first order deceleration small cylinder gear can wind with first order deceleration big column gear center axis; First order deceleration small cylinder gear and first order deceleration big column gear center be apart from being circumferential arrangement for the circular arc of radius, this help avoiding and the suspension mounting arrangements between interference.
Slowdown type wheel limit drive system with dynamic absorber effect must the complete use in the left and right sides.
Have the difference of the slowdown type wheel limit drive system of dynamic absorber effect, can mate multiple suspension type according to the steering swivel specific constructive form.
Superior effect of the present invention is:
1) motor quality does not belong to unsprung weight, so unsprung weight drives the unsprung weight of battery-driven car much smaller than tradition wheel limit;
2) adopt the secondary deceleration transmission of common dead axle cylindrical gear pair and common dead axle conical gear, low cost of manufacture, driving efficiency height help bringing into play the advantage that high-speed electric expreess locomotive efficient is high, power density is big;
3) motor of big quality serves as the dynamic vibration absorber quality, through damping and the rigidity that dynamic vibration absorber is suspended in wheel suitably is set, greatly improves the vertical performance of vehicle;
4) motor of big quality serves as the dynamic vibration absorber quality, does not need extra introducing bump leveller mass, thereby does not increase the curb mass of car load;
5) different according to the steering swivel specific constructive form, can mate multiple suspension;
6) wheel flutter and non-wheel flutter all are suitable for;
7) motor, retarder are positioned at the wheel limit, do not take the vehicle body space;
8) can to wind with first order deceleration big column gear center axis be axis for motor and first order deceleration small cylinder gear; First order deceleration small cylinder gear and first order deceleration big column gear center be apart from being circumferential arrangement for the circular arc of radius, help avoiding and the suspension mounting arrangements between interference.
Description of drawings
Fig. 1 is that tradition wheel limit drives electronlmobil 1/4 vehicle two degrees of freedom model of vibration figure;
Fig. 2 is 1/4 vehicle three degree of freedom model of vibration figure of the present invention;
Fig. 3 does not comprise the slowdown type wheel limit driving system structure scheme drawing with dynamic absorber effect of suspension for the present invention;
Label declaration among the figure
1-bump leveller pilot bar; The 2-bearing;
The 3-motor output shaft; 4-first order deceleration big column gear;
5-second stage deceleration small conical gear; The 6-bearing;
The 7-bearing; The 8-deceleration box;
The 9-wheel rim; The non-rotating element of 10-brake system;
11-brake system rotating element; The 12-hub bearing;
The 13-wheel hub; The 14-semiaxis;
The 15-steering swivel; The 16-bearing;
17-second stage deceleration large conical gear; The 18-bearing;
19-dynamic vibration absorber elastic element; 20-dynamic vibration absorber damping element;
The 21-motor; The 22-bearing;
23-first order deceleration small cylinder gear; The 24-guide thimble.
The specific embodiment
See also shown in the accompanying drawing, the present invention is done further description.
Fig. 1 is that tradition wheel limit drives electronlmobil 1/4 vehicle two degrees of freedom model of vibration figure, and motor quality m3 is a unsprung weight.
Fig. 2 installs 1/4 vehicle three degree of freedom model of vibration figure of bump leveller additional for the present invention; Slowdown type wheel limit drive system with dynamic absorber effect; Its model of vibration can be reduced to like Fig. 2; Wherein m2 is 1/4 body quality, and m1 is a unsprung weight, mainly comprises quality such as the non-rotating element of wheel, wheel rim 9, brake system rotating element 11, brake system 10, semiaxis 14, steering swivel 15, the first order deceleration small cylinder gear 23 that is shaped on female splines, first order deceleration big column gear 4, second stage deceleration small conical gear 5, second stage deceleration large conical gear 17, deceleration box 8; M3 is the dynamic vibration absorber quality, is promptly served as by motor 21 quality.The damping coefficient C3 through dynamic vibration absorber damping element 20 suitably is set and the rigidity k3 of dynamic vibration absorber elastic element 19 can greatly improve the vertical performance of vehicle.
As shown in Figure 3; The invention provides a kind of slowdown type wheel limit drive system with dynamic absorber effect, comprise bump leveller pilot bar 1, bearing 2, be shaped on the non-rotating element of motor output shaft 3, first order deceleration big column gear 4, second stage deceleration small conical gear 5, bearing 6, bearing 7, deceleration box 8, wheel rim 9, the brake system of male splines 10, brake system rotating element 11, hub bearing 12, wheel hub 13, semiaxis 14, steering swivel 15, bearing 16, second stage deceleration large conical gear 17, bearing 18, dynamic vibration absorber elastic element 19, dynamic vibration absorber damping element 20, motor 21, bearing 22, be shaped on the first order deceleration small cylinder gear 23 and the guide thimble 24 of female splines.
Power is exported to through the motor output shaft 3 that is shaped on male splines by motor 21 and is shaped on female splines first order deceleration small cylinder gear 23; The first order deceleration small cylinder gear 23 that is shaped on female splines meshes with transferring power with first order deceleration big column gear 4; First order deceleration big column gear 4 and second stage deceleration small conical gear 5 are affixed and central axis is coaxial; Second stage deceleration small conical gear 5 is through meshing with second stage deceleration large conical gear 17; Thereby output power to semiaxis 14, semiaxis 14 stretches into wheel hub and is shaped on male splines for 13 sections, and the wheel hub 13 through being shaped on female splines is with transmission of power to wheel rim 9.Wheel hub 13 is with wheel rim 9 and the 11 affixed and rotations of brake system rotating element.The motor output shaft 3 that is shaped on male splines matches with the first order deceleration small cylinder gear 23 that is shaped on female splines; In order to transferring power, and be shaped on the motor output shaft 3 of male splines can be along the central axial direction slide relative of the first order deceleration small cylinder gear 23 that is shaped on female splines.The first order deceleration small cylinder gear 23 that is shaped on female splines is supported on the deceleration box 8 through bearing 2, bearing 22, and it can and only can do the rotation around self central axis with respect to deceleration box 8.First order deceleration big column gear 4 and second stage deceleration small conical gear 5 are affixed and central axis is coaxial, and are supported on the deceleration box 8 through bearing 7, and it can and only can do the rotation around self central axis with respect to deceleration box 8.
Said motor 21 also plays the dynamic vibration absorber effect except that outputting power.Bump leveller pilot bar 1 is fixed in motor 21, and only can slide along guide thimble 24 central axial direction, and promptly motor 21 only can slide along guide thimble 24 central axial direction.Guide thimble 24 and deceleration box 8, the non-rotating element 10 of brake system and steering swivel 15 Joints.Guide thimble 24 central axis must parallel with the motor output shaft that is shaped on male splines 3 central axis, to avoid at motor 21 when guide thimble 24 central axis slide and be shaped on the motor output shaft 3 of male splines and be shaped on the interference between first order deceleration small cylinder gear 23 transmissions of female splines.Motor 21 is equipped with dynamic vibration absorber damping element 20 and dynamic vibration absorber elastic element 19 between the deceleration box 8-guide thimble 24-steering swivel 15 that is fixed in.So motor 21 has motion when guide thimble 24 central axial direction are slided in vertical direction, plays vertical dynamic vibration absorber effect thus.
Second stage deceleration large conical gear 17 joins with semiaxis 14, and the two can not do relative motion, and second stage deceleration large conical gear 17 central axis and semiaxis 14 central axis coincide.Semiaxis 14 is supported on the deceleration box 8 through bearing 16, bearing 18, only can do rotatablely moving around self central axis with respect to deceleration box 8.Link to each other with spline between semiaxis 14 and the wheel hub 13, can not do relative motion, only play the effect of transferring power.Be not have relative motion between wheel rim 9, wheel hub 13, brake system rotating element 11, semiaxis 14, the second stage deceleration large conical gear 17, they only can do identical the rotatablely moving of cireular frequency with respect to deceleration box 8 around the wheel center axis.
Each that wheel bore is passed to the wheel hub affixed with it 13 to power via wheel rim 9.Matching with the inner ring of hub bearing 12 in the outer ring of wheel hub 13, does not have relative motion.Matching with the inner ring of steering swivel 15 in the outer ring of hub bearing 12, does not have relative motion.Wheel be passed to wheel hub 13 each be passed to steering swivel 15 to power via hub bearing 12.Hub bearing 12 inner rings and outer ring can and only can relatively rotate, so wheel rim 9, wheel hub 13, brake system rotating element 11, semiaxis 14 and second stage deceleration large conical gear 17 only can relatively rotate between the deceleration box 8-steering swivel 15-guide thimble 24 that is consolidated in.
It is axis that motor 21 and the first order deceleration small cylinder gear 23 that is shaped on female splines wind with first order deceleration big column gear 4 central axis; The first order deceleration small cylinder gear 23 that is shaped on female splines and first order deceleration big column gear 4 width between centerss are that the circular arc of radius is circumferential arrangement, this help avoiding and the suspension mounting arrangements between interference.
Slowdown type wheel limit drive system with dynamic absorber effect must the complete use in the left and right sides.
Have the difference of the slowdown type wheel limit drive system of dynamic absorber effect, can mate multiple suspension type according to steering swivel 15 specific constructive form.
Slowdown type wheel limit drive system brake system with dynamic absorber effect adopts plate disc brake or drum brake mechanism.
Claims (4)
1. the slowdown type wheel limit drive system with dynamic absorber effect comprises bump leveller pilot bar, motor output shaft, first order deceleration big column gear, second stage deceleration small conical gear, the non-rotating element of brake system, brake system rotating element, second stage deceleration large conical gear, dynamic vibration absorber elastic element, dynamic vibration absorber damping element, motor, first order deceleration small cylinder gear and guide thimble; It is characterized in that: power exports first order deceleration small cylinder gear by motor to through motor output shaft; First order deceleration small cylinder gear and first order deceleration big column gear mesh are with transferring power; First order deceleration big column gear is affixed and central axis is coaxial with second stage deceleration small conical gear; Deceleration small conical gear in the second stage is through meshing with second stage deceleration large conical gear; Output power to semiaxis, semiaxis stretches into the wheel hub section and is shaped on male splines, the wheel hub through being shaped on female splines with transmission of power to wheel rim; Said motor is suspended on the deceleration box-steering swivel-guide thimble that is fixed together through dynamic vibration absorber damping element and dynamic vibration absorber elastic element; Motor also serves as the effect of dynamic vibration absorber mass except that outputting power, improve the vertical performance of vehicle through suitable adjustment dynamic vibration absorber damping element and dynamic vibration absorber elastic element parameter.
2. a kind of slowdown type wheel limit drive system according to claim 1 with dynamic absorber effect; It is characterized in that: motor output shaft matches with first order deceleration small cylinder gear; In order to transferring power, motor output shaft is along the central axial direction slide relative of first order deceleration small cylinder gear.
3. a kind of slowdown type wheel limit drive system according to claim 1 with dynamic absorber effect; It is characterized in that: said bump leveller pilot bar is fixed in motor; Slide along the guide thimble central axial direction, the guide thimble central axis is parallel to the motor output shaft central axis.
4. a kind of slowdown type wheel limit drive system with dynamic absorber effect according to claim 1, it is characterized in that: the slowdown type wheel limit drive system brake system that said motor serves as dynamic vibration absorber adopts plate disc brake or drum brake mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100112455A CN102555772A (en) | 2012-01-16 | 2012-01-16 | Speed reduction type hub driving system with function of power shock absorption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100112455A CN102555772A (en) | 2012-01-16 | 2012-01-16 | Speed reduction type hub driving system with function of power shock absorption |
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| CN102555772A true CN102555772A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100112455A Pending CN102555772A (en) | 2012-01-16 | 2012-01-16 | Speed reduction type hub driving system with function of power shock absorption |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191956A (en) * | 2014-07-23 | 2014-12-10 | 郑州宇通客车股份有限公司 | Rim drive system of pure electric vehicle |
| CN105774457A (en) * | 2015-11-04 | 2016-07-20 | 上海电器科学研究所（集团）有限公司 | Lifting terrain-adaptive AGV trolley chassis |
| CN108274988A (en) * | 2017-01-06 | 2018-07-13 | 罗伯特·博世有限公司 | Wheel side power drive system with dynamic shock sucking function |
| CN112977609A (en) * | 2021-04-19 | 2021-06-18 | 北京理工大学 | Integrated power system with steering function, power assembly and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040099455A1 (en) * | 2001-04-16 | 2004-05-27 | Go Nagaya | Fixing method of in-wheel motor and in-wheel motor system |
| CN1684851A (en) * | 2002-08-29 | 2005-10-19 | 株式会社普利司通 | In-wheel motor system |
| JP2007191126A (en) * | 2006-01-23 | 2007-08-02 | Bridgestone Corp | In-wheel motor system |
| CN101370678A (en) * | 2005-12-12 | 2009-02-18 | 株式会社普利司通 | In-wheel motor system |
-
2012
- 2012-01-16 CN CN2012100112455A patent/CN102555772A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040099455A1 (en) * | 2001-04-16 | 2004-05-27 | Go Nagaya | Fixing method of in-wheel motor and in-wheel motor system |
| CN1684851A (en) * | 2002-08-29 | 2005-10-19 | 株式会社普利司通 | In-wheel motor system |
| CN101370678A (en) * | 2005-12-12 | 2009-02-18 | 株式会社普利司通 | In-wheel motor system |
| JP2007191126A (en) * | 2006-01-23 | 2007-08-02 | Bridgestone Corp | In-wheel motor system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191956A (en) * | 2014-07-23 | 2014-12-10 | 郑州宇通客车股份有限公司 | Rim drive system of pure electric vehicle |
| CN105774457A (en) * | 2015-11-04 | 2016-07-20 | 上海电器科学研究所（集团）有限公司 | Lifting terrain-adaptive AGV trolley chassis |
| CN108274988A (en) * | 2017-01-06 | 2018-07-13 | 罗伯特·博世有限公司 | Wheel side power drive system with dynamic shock sucking function |
| CN112977609A (en) * | 2021-04-19 | 2021-06-18 | 北京理工大学 | Integrated power system with steering function, power assembly and vehicle |
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Application publication date: 20120711 |