CN106864252A - One kind is turned to and drives integrated form wheel side power drive system and vehicle - Google Patents
One kind is turned to and drives integrated form wheel side power drive system and vehicle Download PDFInfo
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- CN106864252A CN106864252A CN201710247976.2A CN201710247976A CN106864252A CN 106864252 A CN106864252 A CN 106864252A CN 201710247976 A CN201710247976 A CN 201710247976A CN 106864252 A CN106864252 A CN 106864252A
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- side power
- integrated form
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- 230000009467 reduction Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000004308 accommodation Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 210000000515 tooth Anatomy 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 230000010354 integration Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/003—Disposition of motor in, or adjacent to, traction wheel with two or more motors driving a single wheel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Turned to the invention discloses one kind and drive integrated form wheel side power drive system, including：Double-rotor machine, it includes outer rotor and internal rotor；Ball screw arrangement, it includes ball, leading screw and the nut that mutual lead screw pair coordinates, and one end of the leading screw connects the output shaft of the internal rotor, being rotated by the internal rotor so that the nut is moved axially along the leading screw；The overhanging end articulation steering drag link of the nut；Train of reduction gears, its input connects the outer rotor output shaft, output end connects jack shaft, also disclose a kind of with the vehicle for turning to drive integrated form wheel side power drive system, turned to including even number and drive integrated form wheel side power drive system, by the present invention in that steering is integrated together with Direct wheel drives with double-rotor machine and ball screw framework, structure is greatly simplified, the independent steering and each wheel for realizing each wheel simultaneously independently drive, and cost is reduced and structure is more compact.
Description
Technical field
It is more particularly to a kind of to turn to and drive integrated form wheel side power drive system the present invention relates to automobile technical field,
And it is a kind of with the vehicle for turning to drive integrated form wheel side power drive system.
Background technology
Traditional centralized driving formula pure electric automobile, is that the power source of vehicle is replaced for motor by internal combustion engine, is adopted
With the power assembly being made up of single motor and drive axle or by single motor, speed changer and drive axle (including main reducing gear, difference
Fast device, semiaxis etc.) power assembly of composition drives vehicle to travel, and driving parts are more, transmission efficiency is not high, take up room big.
Wheel hub drives or Direct wheel drives are used as distributed type of drive, and its architectural feature is to be directly installed on motor
In driving moment or near driving moment, motor direct-drive wheel or through reducing gear.Compared with orthodox car, save
The mechanical transmission components such as differential mechanism, speed changer, universal joint, transmission efficiency, compact conformation, vehicle body space utilization rate is high, together
When each Direct wheel drives wheel can independent control, be easy to implement complexity dynamic property and stability control.However, being driven for wheel hub
Dynamic or motor is arranged in the Direct wheel drives form of wheel stand, because motor increased unsprung mass, causes automobile
Ride comfort is not good.Thus, using the motor wheel side independence drive form being arranged on vehicle frame, can effectively be solved at this stage
Certainly this problem.
In addition, rear-axle steering technology is opened at present due to possessing the purpose that can reduce radius of turn, improve control stability
Beginning obtains part vehicle and uses.Rear-axle steering technology is generally divided into three kinds：A kind of is as representative, using outstanding with Citreen Citroen zx
Frame is oriented to the trailing wheel stress follow-up steering technology of the steering that leverage bushing produces slight deformation to realize under lateral forces；It is another
Plant is, as representative, driver to be transported to the handling maneuver of front-wheel using a series of steering gears with multi-wheel steering offroad vehicle
The trapezoidal trailing wheel mechanically actuated steering technique of mechanical steering of the steering trapezium for being delivered to trailing wheel after dynamic reduction amplitude；It is last a kind of
It is, as representative, the electromechanical master of trailing wheel that track rod is realized to be pulled using the extra increased steering motor of trailing wheel with BMW 7 to be
Dynamic steering technique.First two is finished once designing, and its rear-axle steering rule cannot be adjusted, it is impossible to when meeting that automobile is high to be run at a low speed
The different requirements proposed to trailing wheel assisted diversion rule.Then taking turns electromechanical Active Steering Technique needs additionally to increase a set of electromechanical system
System completes rear-axle steering action, causes complex structure, the shortcomings of with high costs, reliability is not high, trailing wheel master is limited for this
The application of dynamic steering technique.
The content of the invention
Turned to the invention provides one kind and drive integrated form wheel side power drive system, by using double-rotor machine and rolling
With Direct wheel drives be integrated together steering by screw mechanism, and structure is greatly simplified.
The present invention provide technical scheme be：
One kind is turned to and drives integrated form wheel side power drive system, including：
Double-rotor machine, it includes outer rotor and internal rotor；
Ball screw arrangement, it includes ball, leading screw and the nut that mutual lead screw pair coordinates, one end connection of the leading screw
The output shaft of the internal rotor, being rotated by the internal rotor so that the nut along the leading screw axially move
It is dynamic；The overhanging end articulation steering drag link of the nut；
Train of reduction gears, its input connects the outer rotor output shaft, output end connection jack shaft.
Preferably, the double-rotor machine includes：
Shell, has accommodation space in it, for arranging outer rotor and internal rotor, the internal rotor by bearings
On outer rotor inner face；
Permanent magnet, it is arranged on the surface of the outer rotor inner side and outer side；
Stator, it is fixed on the inner surface of outer cover；
Exciting Windings for Transverse Differential Protection, it is fixed on the stator, is passed to electric current and is used to produce magnetic field；
Armature winding, it is arranged on the internal rotor；
Wherein, internal rotor and outer rotor can realize that independence and freedom is rotated.
Preferably, the outer rotor includes the main body and end cap of castellated mutual cooperation, and the internal rotor is before and after
Bearings are nested in the accommodation space that the main body and end cap are formed, and it is described that its output end passes connection from accommodation space
Internal rotor output shaft.
Preferably, the train of reduction gears includes：
Output shaft, it is hinged with the jack shaft；
Input gear, it is fixed on the outer rotor output shaft；
Output gear, it is set on the output shaft, and is engaged with the input gear.
Preferably, the input gear includes the axially raised annular flange for extending, and the annular flange can revolve
Turn to be supported on the double-rotor machine housing.
Preferably, there is semicircular arc helicla flute on the ball-screw external cylindrical surface, has in the nut inner hole
With the ball-screw identical helicla flute, the ball-screw and the nut screw connection form ball road.
Preferably, also including spacing end cap, it is the cylinder of flange-type, is fixedly installed on wheel hub drive housing
One end, the spacing end cap cylindrical portion has rectangle elongated slot.
Preferably, the nut outside has rectangular collars, and the rectangular collars can be slided along the rectangle elongated slot,
And limit the nut rotation.
One kind is turned to and drives integrated form wheel side power drive system, including：
First ball screw arrangement, it includes the first ball, the first leading screw and the first nut that mutual lead screw pair coordinates, institute
The one end for stating the first leading screw connects the output shaft of first internal rotor, being rotated by first internal rotor,
So that first nut is moved axially along the leading screw；The overhanging end articulation steering drag link of first nut；
Second ball screw arrangement, it includes the second ball, the second leading screw and the second nut that mutual lead screw pair coordinates, institute
The one end for stating the second leading screw connects the output shaft of second internal rotor, being rotated by second internal rotor,
So that second nut is moved axially along the leading screw；The overhanging end articulation steering drag link of second nut；
First train of reduction gears, its input connects the first outer rotor output shaft, and output end connects left jack shaft；
Second train of reduction gears, it sets input and connects the second outer rotor output shaft, and output end connection is right to drive half
Axle.
A kind of vehicle with steering with driving integrated form wheel side power drive system, including even number such as claim 1 institute
The steering stated drives the wheel of the correspondence position of both sides respectively with driving integrated form wheel side power drive system, the system.
Beneficial effects of the present invention
1. the system integration is good.Steering of the present invention is with driving integrated form wheel side power drive system by using double turns
Sub-motor and ball screw framework outside the driving function for realizing traditional Direct wheel drives system, while realizing turning function
It is integrated.
2. save space, low cost.Steering of the present invention is passed compared with integrated form wheel side power drive system is driven
Mechanical rear-wheel steering system of uniting eliminates the steering gear of a series of complex；Compare trailing wheel electromechanical active steering system
System, eliminates actuating motor, enormously simplify system architecture, and having saved vehicle can utilize space and cost.
3. arrangement is various.Steering of the present invention can be according to vehicle cloth with driving integrated form wheel side power drive system
Between being empty and the type of drive selected, realize single shaft, twin shaft or multiaxis respectively take turns independent steering and it is independent drive it is integrated.
4. maneuverability is good.Steering of the present invention connects with integrated form wheel side power drive system is driven with steering wheel mechanical
Connect, steering angular gear ratio can be adjusted flexibly according to factors such as speed and vehicle-states, fundamentally on solve steering system
The contradiction united " gently with spirit ", substantially increases the maneuvering performance of automobile.
5. can realize turning to energy-conservation with differential power-assisted steering coordinated.Steering of the present invention and driving integrated form
Wheel independently drives and steering when power drive system is due to being integrated with wheel, it is possible to use between left and right wheel drive force difference is produced
Be grounded differential power-assisted steering torque, reduce its double-rotor machine internal rotor for turn to power output, realize steering energy-conservation.
Brief description of the drawings
Fig. 1 is a kind of steering of the present invention and driving integrated form wheel side power drive system plan structure composition sketch.
Fig. 2 is a kind of ball screw framework complete section for turning to and driving integrated form wheel side power drive system of the present invention
View.
Fig. 3 is a kind of ball screw framework leading screw for turning to and driving integrated form wheel side power drive system of the present invention
Axle surveys view.
Fig. 4 is a kind of ball screw framework nut for turning to and driving integrated form wheel side power drive system of the present invention
Axle surveys view.
Fig. 5 is a kind of outer turn turned to the double-rotor machine for driving integrated form wheel side power drive system of the present invention
Son blast axle surveys view.
Fig. 6 is that a kind of steering of the present invention regards with the axle survey of the input gear for driving integrated form wheel side power drive system
Figure.
Fig. 7 is that a kind of steering of the present invention regards with the axle survey of the spacing end cap for driving integrated form wheel side power drive system
Figure.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in figure 1, steering of the present invention includes with integrated form wheel side power drive system is driven：Double-rotor machine
100, ball screw framework 200, drag link 300, knuckle 400, wheel 500, interior universal joint 411, inner shaft 410 is outer universal
Section 421, outer semiaxis 420, spacing end cap 610 and wheel hub drive housing 600.
Double-rotor machine 100 includes internal rotor 110, outer rotor 120, permanent magnet 130, armature winding 140, stator 150, double
Rotor electric machine shell 160, stator excitation winding 180.The empty set of internal rotor 110 is inside outer rotor 120.Pacify on its internal rotor 110
Equipped with armature winding 140, the output shaft end of internal rotor 110 is machined with external splines, and output shaft end root is machined with positioning shaft shoulder, is used to
Spring bearing on internal rotor 110 is installed, the internal rotor other end is machined with the shaft shoulder and is used to install the lower supporting bearing of internal rotor 110, interior
The upper lower supporting bearing of rotor 110 is supported on outer rotor inner face.All post respectively forever on the inner side and outer side surface of outer rotor 120
Magnet 130, stator 150 is fixed on double-rotor machine shell 160, while being provided with stator excitation winding 180 on stator 150.
Internal rotor 110 and outer rotor 120 can be realized individually rotating and individually control.
As shown in figure 5, being the installation of cooperation double-rotor machine internal rotor 110, double-rotor machine outer rotor 120 is designed as cuing open
The structure of fraction, you can be divided into main body 121 and the two parts of end cap 122, main body 121 and end cap 122 use castellated cooperation.Double turns
The surfaces externally and internally of sub-motor outer rotor main body 121 posts permanent magnet 130.The front end center of double-rotor machine outer rotor main body 121 is
The ladder hole of the somewhat larger bearing hole of one internal diameter and the smaller unthreaded hole composition of internal diameter, bearing hole is used for installing birotor
The upper bearing support of motor internal rotor 110, unthreaded hole is used to by the output shaft end of double-rotor machine internal rotor 110, and will not be internal
The output shaft end of rotor 110 produces movement interference.The bottom inside of double-rotor machine end cap for outer rotor 122 is machined with bearing counterbore, uses
In the lower supporting bearing of installation double-rotor machine internal rotor 110, meanwhile, the outside hub of end cap for outer rotor 122 is machined with multi-diameter shaft, uses
To install the lower supporting bearing of double-rotor machine outer rotor 120.The output shaft end of double-rotor machine outer rotor main body 121 processing simultaneously
There is external splines, for carrying out spline connection with input gear 710, while the output shaft end root of outer rotor main body 121 is machined with axle
Shoulder, is used to install spring bearing on double-rotor machine outer rotor 120.The upper lower supporting bearing of outer rotor 120 is supported on birotor
On motor housing.Meanwhile, during to ensure that double-rotor machine outer rotor main body 121 and double-rotor machine end cap for outer rotor 122 coordinate
Reliable centering, six circular arc trapezoidal grooves are machined with double-rotor machine outer rotor main body 121 and the cooperation of end cap for outer rotor 122
Tooth, groove tooth is less than remote center of circle end in radially nearly center of circle end size, and the heel plane machining of groove tooth has annulus arcuation little groove；
121 6 circular arc trapezoidal groove corresponding positions of double-rotor machine end cap for outer rotor 122 and double-rotor machine outer rotor main body are machined with
Six trapezoidal raised tooths of circular arc, raised tooth is less than remote center of circle end, the tooth top of the trapezoidal raised tooth of circular arc in radially nearly center of circle end size
Plane machining has the annulus arcuation corresponding to the little groove of main body circular arc trapezoidal groove tooth heel raised, and circular arc is trapezoidal raised and round
Arc trapezoidal groove basic size is identical, belongs to small―gap suture cooperation.Double-rotor machine outer rotor main body 121 and end cap for outer rotor 122
When being combined into double-rotor machine outer rotor 120, the circular arc trapezoidal groove tooth of main body 121 and the trapezoidal projection of the circular arc of corresponding end cap 122
The V-arrangement side wall of tooth coordinates, and plays a part of both and feels relieved, and utilizes the little groove and tooth of respective tooth root to determine annulus arcuation projection two
Two correspondence gaps coordinate, and play a part of auxiliary radially spacing and axially position.
As in Figure 2-4, ball screw framework 200 is made up of ball 210, leading screw 220, nut 230, ball screw framework
200 effect is that the rotary motion of double-rotor machine internal rotor 110 is converted into spiral shell by the special role of ball screw framework
Female linear motion.Semicircular arc helicla flute is processed wherein on the external cylindrical surface of leading screw 220, meanwhile, in the input of leading screw 220
One end end face is machined with inner spline groove, to pass through spline connection with the output end of double-rotor machine internal rotor 110.Ball-screw machine
Structure nut 230 is cylinder-like structure, and identical semicircular arc spiral corresponding with leading screw 220 is machined with the endoporus of nut 230
Groove.The semicircular arc spiral on semicircular arc helicla flute and the endoporus wall of nut 230 on the external cylindrical surface of leading screw 220
Groove cooperatively forms the raceway of ball 210.The lowermost end of the endoporus of nut 230 is machined with the smaller inner cylinder face of diameter, reducing
Place is used as leading screw 220 and the confined planes of nut relative position.In addition, as shown in Fig. 2 the least significant end edge of the endoporus of nut 230 is opened
There is a small passage for axial direction, produce vapour lock to cause mobile difficulty during avoiding leading screw 220 and nut 230 from relatively moving.Together
When, there is the circulation canal of ball in nut 230, feeder connection and outlet are respectively at the close starting point of semicircle helicla flute and end
At point, ball circulation passages enable the circulating rolling in track of ball 210, and the rotational motion of leading screw 220 is converted into spiral shell by realization
Female 230 along leading screw 220 linear motion.The outer wall of nut 230 of ball screw framework also processes two rectangular collars, rectangular collars
Coordinate with the rectangle elongated slot that the cylindrical portion of spacing end cap 610 is opened, limit its rotary motion.The other rectangle of spacing end cap 610 is long
The length limitation of the groove axial ultimate range of nut 230.Meanwhile, the other end of the non-perforate of ball screw framework nut 230 adds
Work has rectangular block flange, while rectangular block flange center is machined with the tapped through hole for installing ball stud, for installing the horizontal drawing of connection
The ball stud of bar 300.
In another embodiment, a kind of decelerator for turning to and driving integrated form wheel side power drive system of the present invention
It act as turning round double-rotor machine output torque deceleration increasing and translating at output axis to wheel shaft.Decelerator sum of series type of belt drive
Can be adjusted according to the matching relationship and arrangement relation of double-rotor machine and vehicle.I.e. can also be using multistage column gear transmission or list
Level V belt translation or single-stage Chain conveyer.It should be noted that using the retarder variant different from example of the present invention, not constituting different
In the new construction of present invention.
As shown in figure 1, by taking single-stage slant gear transmission as an example, described decelerator includes input gear 710, output gear
Wheel 720 and output shaft 730.Input gear 710, output gear 720, output shaft 730 are arranged in wheel hub drive housing 600
It is interior.Input gear 710 and the external toothing of output gear 720, output gear 720 and the spline connection of output shaft 730.
As shown in fig. 6, described input gear 710 is a common cylinder angular gear for similar wheel hub, by one section of flower
The through hole of keyhole and unthreaded hole composition is more than splined hole through its whole gear and the center of wheel hub, the internal diameter of unthreaded hole.Input gear
710 pass through spline connection with the output shaft of double-rotor machine outer rotor 120, realize the transmission of power.The one end of input gear 710 leads to
The shaft shoulder for crossing the placement bearing processed on the output shaft of double-rotor machine outer rotor 120 is spacing, and the other end is limited by snap ring 620
Position.
Wherein, described output gear 720 is common cylinder angular gear, and the number of teeth of output gear 720 is more than input tooth
The number of teeth of wheel 710, being capable of achieving to slow down increases square.Output gear 720 is arranged on output shaft 730 by spline.
As shown in fig. 7, described spacing end cap 610 is a circle ring column for flange-type, circle on the flange face of its one end
Offer 6 through holes week, be used to spacing end cap 610 is fixed on wheel hub drive housing 600 by bolt；Its hub portion
Divide and stretch into wheel hub drive housing 600.The center of spacing end cap 610 is a manhole, ball screw framework nut 230
External cylindrical surface passed through from hole, the other end of spacing end cap 610 from the beginning prolong axially offer two rectangular channels to end face of flange, use
Coordinate the rotation of limitation nut 230 with two rectangular collars with the outer wall of nut 230 of ball screw framework, and utilize rectangular channel
The maximum axial amount of movement of length limitation nut 230.Refering to Fig. 1, described interior universal joint 411 and outer universal joint 421 all for etc.
Angle speed universal joint.The output end of described output shaft 730 and the inner of inner shaft 410 are connected by interior universal joint 411, inner shaft
The inner of 410 outer end and outer semiaxis 420 is coupled together by outer universal joint 421.
As shown in figure 1, interior in described wheel hub drive housing 600 be provided with double-rotor machine 100 and decelerator.
Wheel hub drive housing 600 has for input gear 710 and output gear 720 and output shaft 730 provide support and tooth
The effect of lubrication is taken turns, while wheel hub drive housing 600 realizes double-rotor machine 100 to fix, and is double-rotor machine
Cooling provides cavity.Meanwhile, wheel hub drive housing 600 is arranged on vehicle frame, is supported by suspension, is sprung mass.
As shown in Figure 1, 2, its annexation of each part is：Wheel hub drive housing 600 is fixed on vehicle body, birotor
The output shaft end of motor outer rotor 120 is closely connected by spline with input gear 710, input gear 710 and output gear 720
It is meshed, output gear 720 is fixed on output shaft 730 by spline pair.In the output end and inner shaft 410 of output shaft 730
End is connected by interior universal joint 411, and the other end of inner shaft 410 is connected with the inner of outer semiaxis 420 by outer universal joint 421
Connect, the outer end of outer semiaxis 420 is machined with flange, and uniform through hole is machined with flange, while being machined with the wheel hub of wheel 500
The through hole corresponding with the flange of outer semiaxis 420, then outer semiaxis 420 passes through bolt with the wheel hub of wheel 500 and nut is realized fixing.
The output shaft end of the internal rotor 110 of double-rotor machine is connected by spline with the leading screw 220 of ball screw framework, meanwhile, ball
The output shaft end of screw mechanism 200 and double-rotor machine internal rotor 110 is from the center of input gear 710 and double-rotor machine outer rotor
120 output shaft end central through hole is passed through, while the nut 230 of ball screw framework can be normally in central through hole along ball wire
The normal straight line motion of leading screw 220 of thick stick mechanism, the leading screw 220 of ball screw framework and the internal rotor 110 of double-rotor machine it is defeated
Go out shaft end can in central through hole normal rotation, without motion interference.The nut 230 of ball screw framework passes through spherical hinge and horizontal drawing
The one end of bar 300 be connected, the drag link other end is connected by spherical hinge with the knuckle arm of knuckle 400, knuckle arm and steering
Section 400 is structure as a whole, and knuckle 400 is supported on wheel 500 by hub bearing.
The present invention is turned to comprising at least two sets and drives integrated form wheel side power drive system, and both sides wheel movement is driven respectively
And turn to.
It is of the present invention steering with driving the integrated form wheel specific course of work of side power drive system and operation principle be：
It is of the present invention it is a kind of turn to when driving integrated form wheel side power drive system to be applied to automobile hind axle, it is necessary to
Automobile hind axle or so all installs steering of the present invention and drives integrated form wheel side power drive system, the wheel side electricity at left and right two ends
Driving system structure is completely the same, and now as independent steering drives integrated form wheel side electric drive back axle with independent；The present invention exists
Front-wheel can also be applied to when needing, such as now as independent steering and independently driving integrated form wheel side electric drive propons, right
In the intelligent electric vehicle without steering apparatus；Simultaneously present invention may also apply to four-wheel or Multi Axle Drive Vehicle, arrangement form
It is versatile and flexible, but no matter which kind of form, as long as being with driving integrated form wheel side power drive system using steering of the present invention
Within protection scope of the present invention.Here with the back axle left and right wheels assembling steering of the present invention commonly used and driving integrated form
Take turns side power drive system automobile as a example by, the left side wheel side power drive system in double-rotor machine outer rotor 120 receive it is whole
Driving moment that vehicle controller is transmitted instruction, double-rotor machine outer rotor 120 starts to rotate and export power, and output power is to defeated
Enter gear 710, after the deceleration of the engagement transmission of input gear 710 and output gear 720 increases square effect, power is transferred to
On output shaft, power is transmitted via output shaft 730, interior universal joint 411, inner shaft 410, outer universal joint 421 and outer semiaxis 420 again
To wheel 500, driving moment traveling.When automobile needs to turn to, double-rotor machine internal rotor 110 receives steering control
The control instruction that device is transmitted, the controlled rotation of double-rotor machine internal rotor 110, internal rotor 110 drives ball-screw machine by spline
The leading screw 220 of structure is rotated, and by the effect of ball in ball screw framework, the rotary motion of leading screw 220 is changed for ball
The axial direction rectilinear movement of screw mechanism nut 230, ball screw framework nut 230 pulls the drag link of connection by spherical hinge
300 motions, the knuckle 400 that drag link 300 pulls connection by spherical hinge again is moved, and knuckle is produced around wheel stub and is turned
It is dynamic.Similarly, the internal rotor controlled rotation of the double-rotor machine in control the right wheel side power drive system, can equally control the right
Wheel turns over identical or different angle, that is, realize the trailing wheel steering-by-wire function of automobile.
It is a kind of integrated with driving with the vehicle for turning to drive integrated form wheel side power drive system, including even number steering
Formula wheel side power drive system, turns to and the wheel for driving integrated form wheel side power drive system to drive the correspondence position of both sides respectively.
Steering of the present invention independently drives and turns with integrated form wheel is driven when power drive system is due to being integrated with wheel
To system, it is possible to use left and right wheel drive force difference produces differential power-assisted steering torque indirectly, reduces its double-rotor machine
Internal rotor is used for the power output for turning to, and realizes turning to energy-conservation.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and implementation method
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (10)
1. it is a kind of to turn to and drive integrated form wheel side power drive system, it is characterised in that including：
Double-rotor machine, it includes outer rotor and internal rotor；
Ball screw arrangement, it includes ball, leading screw and the nut that mutual lead screw pair coordinates, and one end connection of the leading screw is described
The output shaft of internal rotor, being rotated by the internal rotor so that the nut is moved axially along the leading screw；Institute
State the overhanging end articulation steering drag link of nut；
Train of reduction gears, its input connects the outer rotor output shaft, output end connection jack shaft.
2. it is according to claim 1 to turn to and drive integrated form wheel side power drive system, it is characterised in that the birotor
Motor includes：
Shell, has accommodation space in it, for arranging outer rotor and internal rotor, the internal rotor by bearings outside
On rotor inner face；
Permanent magnet, it is arranged on the surface of the outer rotor inner side and outer side；
Stator, it is fixed on the inner surface of outer cover；
Exciting Windings for Transverse Differential Protection, it is fixed on the stator, is passed to electric current and is used to produce magnetic field；
Armature winding, it is arranged on the internal rotor；
Wherein, internal rotor and outer rotor can realize that independence and freedom is rotated.
3. it is according to claim 2 to turn to and drive integrated form wheel side power drive system, it is characterised in that the outer rotor
Main body and end cap including castellated mutual cooperation, the internal rotor are supported by front and back bearings and are nested in the main body and end cap
In the accommodation space of formation, its output end passes the connection internal rotor output shaft from accommodation space.
4. it is according to claim 1 to turn to and drive integrated form wheel side power drive system, it is characterised in that the reducing gear
Wheel group includes：
Output shaft, it is hinged with the jack shaft；
Input gear, it is fixed on the outer rotor output shaft；
Output gear, it is set on the output shaft, and is engaged with the input gear.
5., according to claim steering according to claim 4 and driving integrated form wheel side power drive system, its feature exists
In the input gear includes the axially raised annular flange for extending, and the annular flange is rotatably supported at described double
On rotor electric machine housing.
6. the steering according to claim 4 or 5 with drive integrated form wheel side power drive system, it is characterised in that the silk
On thick stick external cylindrical surface have semicircular arc helicla flute, in the nut inner hole have with the leading screw identical helicla flute, it is described
Leading screw forms ball road with the nut screw connection.
7. it is according to claim 1 to turn to and drive integrated form wheel side power drive system, it is characterised in that also including spacing
End cap, it is the cylinder of flange-type, is fixedly installed on wheel hub drive shell one end, the spacing end cap cylindrical portion
With rectangle elongated slot.
8. it is according to claim 7 to turn to and drive integrated form wheel side power drive system, it is characterised in that outside the nut
Side has rectangular collars, and the rectangular collars can be slided along the rectangle elongated slot, and limit the nut rotation.
9. it is a kind of to turn to and drive integrated form wheel side power drive system, it is characterised in that including：
First double-rotor machine, including the first internal rotor and the first outer rotor；
Second double-rotor machine, including the second internal rotor and the second outer rotor；
First ball screw arrangement, it includes the first ball, the first leading screw and the first nut that mutual lead screw pair coordinates, described the
One end of one leading screw connects the output shaft of first internal rotor, being rotated by first internal rotor so that
First nut is moved axially along the leading screw；The overhanging end articulation steering drag link of first nut；
Second ball screw arrangement, it includes the second ball, the second leading screw and the second nut that mutual lead screw pair coordinates, described the
One end of two leading screws connects the output shaft of second internal rotor, being rotated by second internal rotor so that
Second nut is moved axially along the leading screw；The overhanging end articulation steering drag link of second nut；
First train of reduction gears, its input connects the first outer rotor output shaft, and output end connects left jack shaft；
Second train of reduction gears, it sets input and connects the second outer rotor output shaft, and output end connects right jack shaft.
10. it is a kind of with the vehicle for turning to drive integrated form wheel side power drive system, it is characterised in that including even number as weighed
Profit requires the steering and driving integrated form wheel side power drive system described in 1, and the system drives the correspondence position of both sides respectively
Wheel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710247976.2A CN106864252B (en) | 2017-04-17 | 2017-04-17 | Steering and driving integrated wheel electric driving system and vehicle |
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| CN201710247976.2A CN106864252B (en) | 2017-04-17 | 2017-04-17 | Steering and driving integrated wheel electric driving system and vehicle |
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| CN106864252B CN106864252B (en) | 2023-10-31 |
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| CN106864252B (en) | 2023-10-31 |
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