CN104875608A - Center motor integrated two-gear electric axle - Google Patents
Center motor integrated two-gear electric axle Download PDFInfo
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- CN104875608A CN104875608A CN201510268267.3A CN201510268267A CN104875608A CN 104875608 A CN104875608 A CN 104875608A CN 201510268267 A CN201510268267 A CN 201510268267A CN 104875608 A CN104875608 A CN 104875608A
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Abstract
The invention provides a center motor integrated two-gear electric axle. The center motor integrated two-gear electric axle comprises a hollow motor, a hollow transmission device and a differential mechanism which are coaxially arranged, and the motor is located between driving wheels on the two sides. A multi-stage planetary gear transmission mechanism is adopted in the transmission device, and the transmission device comprises a sun wheel, a planet carrier, a first planet wheel, a low-gear gear ring, a second planet wheel, a high-gear gear ring, a low-gear brake component, a high-gear brake component and an operating device. According to a power transmission path in the center motor integrated two-gear electric axle, a rotor of the motor outputs power to the sun wheel, the power is transmitted to a differential case through the public planet carrier, and the power is transmitted to hubs of the driving wheels on the two sides through two semiaxes of the differential mechanism. The operating device drives the low-gear brake component and the high-gear brake component to achieve gear shifting. The center motor integrated two-gear electric axle has the advantages of being compact in structure and small in occupied space and facilitating battery arrangement. The two-gear design is adopted, and the different requirements of the highest speed and maximum gradeability of a whole car for the transmission ratio can be met through the car.
Description
Technical field
The invention belongs to automotive power transmission system technical field, specifically, be a kind of be applicable to electronlmobil electrical motor, driving device and diff is coaxially arranged and the mid-electrical motor integral type two of electrical motor between two side drive wheel keeps off electronic bridge.
Background technology
Current electronlmobil still exists that specific power is little, continual mileage is short and the shortcomings such as charging is inconvenient.Therefore, alleviate the weight of power drive system, improve the above-mentioned deficiency that its mechanical efficiency can make up electronlmobil to a certain extent.But the existing typical power transmission scheme of electronlmobil remains based on the exploitation of conventional drive bridge.This assembled drive axle exists that structure is not compact, size and weight is large, motor suspension difficult design and the shortcoming such as vibration & noise is larger.In order to improve the shortcoming of conventional drive bridge, having developed in the industry the electric bridge of three kinds of forms, is wheel hub electric motor, wheel limit electrical motor bridge and mid-motor drive axle respectively.Briefly introduce their features and application situation below.
Although wheel hub electric motor structure is very compact, mechanical efficiency is high, the automobile nonspring carried mass of employing wheel hub electric motor is large, suspension arrangement is difficult, motor capacity is not enough, Electronic differential control difficulty large, and electrical motor cooling, sealing and antivibration difficulty.Because Design and manufacture difficulty is also comparatively large, the power of domestic wheel hub electric motor is general all at below 10kW.
Wheel limit electrical motor bridge two side drive wheel individual drive, is applicable to low floor bus, is convenient to battery arrangement, and dynamic distributes the drive torque of two side drive wheel.Its shortcoming be processing and matching requirements are high, nonspring carried mass greatly, Electronic differential control difficulty is large, driving efficiency is low, energy consumption is large.
The electronic bridge of existing mid-electrical motor (being called for short " mid-electronic bridge ") adopts hollow motor mostly, and minority adopts the spinner motor of exempting from diff.Adopt the mid-electronic bridge of hollow motor that electrical motor, epicyclic reduction gear unit and diff are arranged in same axis, power is directly reached mid-electronic bridge place side drive wheel by a semiaxis, and power is then reached opposite side drive wheel through hollow motor by another root semiaxis.This mid-electronic bridge not only compact conformation, not need to redesign suspension, cost low, and because remaining conventional carrier, reliably can meet turning differential demand.Its shortcoming is that the hollow rear volume of electrical motor, weight and cost increase all to some extent, and supporting and sealing difficulty increase.Adopt spinner motor although mid-electronic bridge can save diff in theory, structure is simple, the power that two rotors export still needs just can reach drive wheel through the deceleration of complexity and deceleration direction reverser.And, in order to ensure two side drive wheel torque phases with and turning differential can be realized, motor control is very difficult.In addition, spinner motor also exist starting torque little, cooling and sealing difficulty etc. shortcoming.Therefore, spinner motor does not almost have application example on pure electric automobile.
The electric bridge comprising above three kinds of forms of mid-electronic bridge generally all adopts and directly drives deceleration, and namely the driving device of electronic bridge only has a gear.The shortcoming of directly driving electronic bridge is the requirement being difficult to take into account car load maximum speed and max. climb slope.Although increase motor speed scope, strengthen motor power (output) and can alleviate maximum speed and the contradiction of max. climb slope on transmitting ratio is selected to a certain extent, the volume of electrical motor, weight and cost all increase more.
Summary of the invention
For solving the problem, the present invention proposes a kind of electrical motor, driving device and diff arranged in co-axial alignment and to arrange and the mid-electrical motor integral type two of electrical motor between two side drive wheel keeps off electronic bridge, can take into account car load maximum speed and max. climb slope requires and self shifter the difference passing to device speed ratio.
For achieving the above object, the invention provides following technical scheme:
A kind of mid-electrical motor integral type two keeps off electronic bridge, comprises electrical motor, driving device and diff, and described diff is connected with the drive wheel of both sides respectively by the semiaxis of both sides, it is characterized in that:
Described electrical motor and described driving device are hollow structure, described electrical motor, described driving device and described diff arranged in co-axial alignment arrange and described electrical motor between the described drive wheel of both sides, connect the semiaxis activity of described diff and the drive wheel near described electrical motor side through described electrical motor and described driving device;
Described driving device is multi-stage planetary gear transmission device, described multi-stage planetary gear transmission device comprises and to be connected with the rotor of described electrical motor and with the sun wheel of described rotor turns, one end and described rotor rotate and are connected the pinion carrier that the other end is connected with described diff, engage with described sun wheel and the first row star-wheel in described pinion carrier can be arranged on around own axis, engaging with described the first row star-wheel also can around the low gear gear ring of own axis, the second satellite gear in described pinion carrier can be arranged on around own axis, engaging with described second satellite gear also can around the high gear gear ring of own axis, for the low gear brake component braked described low gear gear ring, for the high gear brake component braked described high gear gear ring and the operating control driving described low gear brake component and described high gear brake component.
Wherein, the diameter of described the first row star-wheel is greater than described second satellite gear; The diameter of described low gear gear ring is greater than described high gear gear ring.
Preferably, described low gear brake component comprises fixed cover and is located at the low gear gear ring brake wheel on the outer circumference surface of described low gear gear ring, the low gear brake collar be set on the outer circumference surface of described low gear gear ring brake wheel; Described high gear brake component comprises fixed cover and is located at the high gear gear ring brake wheel on the outer circumference surface of described high gear gear ring, the high gear brake collar be set on the outer circumference surface of described high gear gear ring brake wheel.
Further preferably, described operating control comprises the motor speed sensor for gathering motor speed signal, for gathering the accelerator travel sensor of accelerator travel signal, for receiving described motor speed signal and described accelerator travel signal and sending the electronic control unit of gear shifting signal, be connected with described electronic control unit and drive described low gear brake collar to tighten up or loosen the low gear gearshift of described low gear gear ring brake wheel, be connected with described electronic control unit and drive described high gear brake collar to tighten up or loosen the high gear gearshift of described high gear gear ring brake wheel.
Still more preferably, described low gear gearshift comprise the low gear be connected with described electronic control unit shift gears electrical motor, be connected to described low gear and shift gears low gear screw mandrel on the output shaft of electrical motor, one end and the inconsistent other end of described low gear screw mandrel and the inconsistent low gear lever of described low gear brake collar; Described high gear gearshift comprise the high gear be connected with described electronic control unit shift gears electrical motor, be connected to described high gear and shift gears the inconsistent high gear lever of high gear screw mandrel on the output shaft of electrical motor, the inconsistent other end in end of one end and described high gear screw mandrel and described high gear brake collar.
Particularly, described low gear gearshift also comprise to be connected on described low gear screw mandrel one conflict the low gear nut of described low gear lever, the pull back spring supporting seat be fixed on described low gear gearshift electrical motor, be connected to described pull back spring supporting seat and described low gear nut chien shih described in low gear nut there is the pull back spring of the trend away from described low gear lever; Described high gear gearshift also comprise to be connected on described high gear screw mandrel one conflict the high gear nut of described high gear lever, the spring perch be fixed on described high gear gearshift electrical motor, be connected to described spring perch and described high gear nut chien shih described in high gear nut there is the holddown spring of the trend pushing against described low gear lever.
For the ease of manually adjusting the tightness of low gear brake collar and high gear brake collar, described low gear gearshift also comprises the low gear inconsistent with described low gear brake collar and adjusts screw; Described high gear gearshift also comprises the high gear inconsistent with described high gear brake collar and adjusts screw.
Wherein, in a detailed description of the invention, described semiaxis comprises major semiaxis and semi-minor axis, and the length of described major semiaxis is greater than described semi-minor axis; Described drive wheel comprises the distally drive wheel away from described diff and the nearside drive wheel near described diff, described major semiaxis one end is connected other end activity and is connected with described distally drive wheel through after described driving device and described electrical motor with described diff, described semi-minor axis one end is connected the other end and is connected with described nearside drive wheel with described diff; Described electrical motor comprises motor field frame and is arranged on the stators and rotators in described motor field frame, and described rotor is hollow, and described major semiaxis activity is through described rotor; Described motor field frame is fixedly connected with distally axle housing near one end of described distally drive wheel, and described distally drive wheel is rotatably supported on the axle housing of described distally; One end near described nearside drive wheel on described motor field frame is fixedly connected with nearside axle housing, and described nearside drive wheel is rotatably supported on described nearside axle housing.
There is in described motor field frame the dividing plate of band endoporus, the inner chamber of described motor field frame is separated into the first cavity away from described diff and the second cavity near described diff by described dividing plate, described stator and described rotor are positioned at described first cavity, and described driving device is positioned at described second cavity; Described diff rotates and is arranged in described nearside axle housing.
Described diff comprises the rotatable differential gear box, the apparatus of taper planetary wheel axle be fixed in described differential gear box, the apparatus of taper planetary wheel be arranged on described apparatus of taper planetary wheel axle that arrange, and the described semiaxis of described diff both sides engages with described apparatus of taper planetary wheel respectively by gear; One end of described pinion carrier is connected with described rotor turns by pinion carrier clutch shaft bearing, the other end to be rotatably supported in the endoporus of described dividing plate by pinion carrier second bearing and to be coaxially connected by spline with described differential gear box, and described differential gear box is rotatably supported on described nearside axle housing by differential case bearing.
Owing to adopting technique scheme, driving device of the present invention adopts multi-stage planetary gear transmission device, constitutes NGW-NW composite planetary gear drive, has the following advantages:
(1) the present invention's mid-electrical motor integral type two is kept off the electrical motor of electronic bridge, driving device and diff arranged in co-axial alignment and is arranged, compact conformation, occupies little space, and thus facilitates battery arrangement;
(2) the two gear designs that the present invention's mid-electrical motor integral type two keeps off electronic bridge enable automobile take into account car load maximum speed and max. climb slope to the different requirements of transmitting ratio, reduce the requirement to motor speed scope and power simultaneously;
(3) the present invention's mid-electrical motor integral type two is kept off electronic bridge and is adopted external contracting drum brake self shifter, has the advantage of control comfort and driving comfort.
Accompanying drawing explanation
Fig. 1 is integral structure schematic diagram of the present invention.
Fig. 2 be in Fig. 1 A-A to section-drawing.
Fig. 3 be in Fig. 1 B-B to section-drawing.
Label in accompanying drawing and the parts of correspondence are as shown in the following chart:
| 1-distally drive wheel | 2-distally axle housing | 3-distal shaft bearing |
| 4-stator | 5-rotor | 6-rotor second bearing |
| 7-low gear gear ring bearing | 8-low gear brake collar | 9-the first row star-wheel |
| 10-low gear gear ring | 10a-low gear gear ring brake wheel | 11-back-up ring |
| 12-axle housing bolt | 13-proximal shaft bearing | 14-high gear gear ring bearing |
| 15-differential gear box | 16-apparatus of taper planetary wheel | 17-nearside drive wheel |
| 18-differential case bearing | 19-semi-minor axis | 20-nearside axle side gear |
| 21-nearside axle housing | 22-apparatus of taper planetary wheel axle | 23-distally axle side gear |
| 24-pinion carrier second bearing | 25-high gear gear ring | 25a-high gear gear ring brake wheel |
| 26-high gear brake collar | 27-second satellite gear | 28-pinion carrier |
| 29-sun wheel | 30-pinion carrier clutch shaft bearing | 31-major semiaxis |
| 32-motor field frame | 33-rotor clutch shaft bearing | 34-motor speed sensor |
| 35-hub bearing | 36-wheel hub | 37-accelerator travel sensor |
| 38-electronic control unit | 39-high gear gearshift | 39e-low gear gearshift |
| 39a-high gear gearshift electrical motor | 39b-spring perch | 39c-high gear screw mandrel |
| 39d-holddown spring | 39e-high gear nut | 39f-high gear lever |
| 39g-high gear pivot | 39h-high gear push rod | 39i-high gear adjustment screw |
| 39j-high gear jam nut | 40a-low gear gearshift electrical motor | 40b-pull back spring supporting base |
| 40c-low gear screw mandrel | 40d-pull back spring | 40e-low gear nut |
| 40f-low gear lever | 40g-low gear pivot | 40h-low gear push rod |
| 40i-low gear adjustment screw | 40j-low gear jam nut | 41-acceleration pedal |
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Refer to Fig. 1, the present embodiment provides the present invention's mid-electrical motor integral type two to keep off electronic bridge, comprise electrical motor, driving device, low gear gearshift 40, high gear gearshift 39, diff, apart from the nearer nearside axle housing 21 of diff, distally axle housing 2, axle housing bolt 12, wheel hub 36, hub bearing 35, semi-minor axis 19, nearside drive wheel 17, major semiaxis 31, distally drive wheel 1, accelerator travel sensor 37, motor speed sensor 34 and the electronic control unit 38 far away apart from diff.
Described electrical motor and described driving device are hollow structure, described electrical motor, described driving device and described diff successively arranged in co-axial alignment arrange and described electrical motor between nearside drive wheel 17 and distally drive wheel 1, connect that the major semiaxis 31 of described diff and distally drive wheel 1 is movable passes described electrical motor and described driving device.
Wherein, for gather motor speed signal motor speed sensor 34, for gather accelerator travel signal accelerator travel sensor 37, for receive described motor speed signal with described accelerator travel signal and send the electronic control unit 38 of gear shifting signal, the low gear gearshift 40 be connected with electronic control unit 38, the high gear gearshift 39 that is connected with electronic control unit 38 constitute operating control.
Electrical motor comprises stator 4, rotor 5, motor field frame 32, rotor clutch shaft bearing 33 and rotor second bearing 6.Stator 4 and rotor 5 are arranged in motor field frame 32, and rotor 5 is hollow, and major semiaxis 31 activity is through rotor 5.Motor field frame 32 is fixedly connected with distally axle housing 2 near one end of distally drive wheel 1, and distally drive wheel 1 is rotatably supported on distally axle housing 2 by wheel hub 36 and hub bearing 35.One end near nearside drive wheel 17 on motor field frame 32 is fixedly connected with nearside axle housing 21, and nearside drive wheel 17 is rotatably supported on nearside axle housing 21 by wheel hub and hub bearing.
There is in motor field frame 32 dividing plate of band endoporus, the inner chamber of motor field frame 32 is separated into the first cavity away from described diff and the second cavity near described diff by dividing plate, stator 4 and rotor 5 are positioned at described first cavity, and described driving device is positioned at described second cavity; Described diff rotates and is arranged in nearside axle housing 21.Rotor 5 is supported in the bearing hole of distal shaft bearing 3 and motor field frame 32 respectively by rotor clutch shaft bearing 33 and rotor second bearing 6.The nearside axle housing 21 at motor field frame 32 two ends and distally axle housing 2 are fixedly connected by axle housing bolt 12 and motor field frame 32.Proximal shaft bearing 13 is arranged in the hole of motor field frame 32 and nearside axle housing 21, and by back-up ring 11 axial limiting.
Driving device is multi-stage planetary gear transmission device, be NGW-NW composite planetary gear drive in the present embodiment, it comprises sun wheel 29, the first row star-wheel 9, low gear gear ring 10, low gear gear ring bearing 7, second satellite gear 27, high gear gear ring 25, high gear gear ring bearing 14, pinion carrier 28, pinion carrier clutch shaft bearing 30, pinion carrier second bearing 24, proximal shaft bearing 13 and back-up ring 11.
Sun wheel 29 is connected with the rotor 5 of described electrical motor and rotates with rotor 5.One end and the rotor 5 of pinion carrier 28 rotate and are connected the other end and are connected with described diff.The first row star-wheel 9 engages with sun wheel 29 and can be arranged in pinion carrier 28 along self axial rotation, and low gear gear ring 10 engages with the first row star-wheel 9 and can around own axis.Second satellite gear 27 can be arranged in pinion carrier 28 around own axis, and high gear gear ring 25 engages with the second satellite gear 27 and can around own axis.This driving device also comprises the low gear brake component for braking low gear gear ring 10, the high gear brake component for braking high gear gear ring 25.Above-mentioned operating control can drive described low gear brake component and described high gear brake component to realize keeping out the braking of gear ring 10 and high gear gear ring 25 or unclamping.Described low gear brake component comprises fixed cover and is located at the low gear gear ring brake wheel 10a on the outer circumference surface of low gear gear ring 10, the low gear brake collar 8 be set on the outer circumference surface of low gear gear ring brake wheel 10a; Described high gear brake component comprises fixed cover and is located at the high gear gear ring brake wheel 25 on the outer circumference surface of high gear gear ring 25, the high gear brake collar 26 be set on the outer circumference surface of high gear gear ring brake wheel 25a.
High gear gear ring 25 is bearing in the centre hole of proximal shaft bearing 13 by high gear gear ring bearing 14, and this bearing is double row cylindrical roller bearing.Pinion carrier 28 is bearing in the axle journal of motor rotor 5 and the endoporus of high gear gear ring 25 respectively by pinion carrier clutch shaft bearing 30 and pinion carrier second bearing 24.Low gear gear ring 10 is bearing on the axle journal of pinion carrier 28 one end by low gear gear ring bearing 7.The outer cylinder surface of high gear gear ring 25 and low gear gear ring 10 establishes brake wheel, and their locking or free rotational motion state depend on tightening up or releasing orientation of low gear brake collar 8 and high gear brake collar 26 respectively.
Wherein, the diameter of the first row star-wheel 9 is greater than the second satellite gear 37; The diameter of low gear gear ring 10 is greater than high gear gear ring 25.
Described diff comprises differential gear box 15, differential case bearing 18, apparatus of taper planetary wheel 16, apparatus of taper planetary wheel axle 22, nearside axle side gear 20 and distally axle side gear 23.Differential gear box 15 is rotatably arranged, and differential gear box 15 is positioned at the large stomidium of nearside axle housing 21, and its one end is supported in the female splines of pinion carrier 28 by splined, and the other end is bearing in the hole of nearside axle housing 21 by differential case bearing 18.Apparatus of taper planetary wheel axle 22 is fixed in differential gear box 15, and apparatus of taper planetary wheel 16 is arranged on apparatus of taper planetary wheel axle 22.The wheel hub 36 of nearside drive wheel 17 and distally drive wheel 1 is bearing in the outer end of nearside axle housing 21 and distally axle housing 2 respectively by respective hub bearing 35.Semi-minor axis 19 and major semiaxis 31 use Bolt Connection respectively by respective flange and corresponding wheel hub 36.Nearside axle side gear 20 on semi-minor axis 19 and the distally axle side gear 23 on major semiaxis 31 engage with apparatus of taper planetary wheel 16 respectively.
Low gear gearshift 40 as shown in Figure 2, comprises low gear gearshift electrical motor 40a, low gear screw mandrel 40c, low gear nut 40e, pull back spring 40d, pull back spring supporting base 40b, low gear lever 40f, low gear pivot 40g, low gear push rod 40h, low gear adjustment screw 40i, low gear jam nut 40j and low gear brake collar 8.Low gear gearshift electrical motor 40a to be fixedly mounted on motor casing 32 and to be connected with electronic control unit 38, and low gear screw mandrel 40c is connected on the output shaft of low gear gearshift electrical motor 40a, and low gear nut 40e is connected on low gear screw mandrel 40c.Low gear lever 40f is rotatably connected on motor casing 32 by low gear pivot 40g, one end of low gear lever 40f and the inconsistent other end of low gear screw mandrel 40c and low gear brake collar 8 inconsistent.Low gear push rod 40h is fixed on for conflicting with low gear brake collar 8 on low gear lever 40f, when low gear lever 40f rotates, tightens up and loosen low gear brake collar 8.Pull back spring supporting seat 40b is fixed on low gear gearshift electrical motor 40a, and the chien shih low gear nut 40e that pull back spring 40d is connected to pull back spring supporting seat 40b and low gear nut 40e has the trend away from low gear lever 40f.For the ease of manually adjusting the tightness of low gear brake collar 8, low gear gearshift 40 also comprises the low gear inconsistent with low gear brake collar 8 and adjusts screw 40i, low gear adjustment screw 40i is threaded on motor casing 32, and low gear adjustment screw 40i has also been threaded low gear jam nut 40j.
Described high gear gearshift 39 as shown in Figure 3, comprises high gear gearshift electrical motor 39a, high gear screw mandrel 39c, high gear nut 39e, holddown spring 39d, spring perch 39b, high gear lever 39f, high gear pivot 39g, high gear push rod 39h, high gear adjustment screw 39i, high gear jam nut 39j and high gear brake collar 26.High gear gearshift electrical motor 39a is connected with electronic control unit 38, high gear screw mandrel 39c is connected on the output shaft of high gear gearshift electrical motor 39a, high gear screw mandrel 39c is connected on the output shaft of high gear gearshift electrical motor 39a, and high gear nut 39e is connected on high gear screw mandrel 39c.High gear lever 39f is rotatably connected on motor casing 32 by high gear pivot 39g, one end of high gear lever 39f and the inconsistent other end of high gear screw mandrel 39c and high gear brake collar 26 inconsistent.High gear push rod 39h is fixed on for conflicting with high gear brake collar 26 on high gear lever 39f, when high gear lever 39f rotates, tightens up and loosen high gear brake collar 26.Spring perch 39b is fixed on high gear gearshift electrical motor 39a, and the chien shih high gear nut 39e that holddown spring 39d is connected to spring perch 39b and high gear nut 39e has the trend pushing against high gear lever 39f.For the ease of manually adjusting the tightness of high gear brake collar 26, high gear gearshift 39 also comprises the high gear inconsistent with high gear brake collar 26 and adjusts screw 39i, high gear adjustment screw 39i is threaded on motor casing 32, and high gear adjustment screw 39i has also been threaded high gear jam nut 39j.
The power transmission line that the mid-electrical motor integral type two of the present embodiment keeps off electronic bridge is: tighten up in low gear brake collar 8 and high gear brake collar 26 by low gear gearshift 40 and high gear gearshift 39 and unclamp another, the rotor 5 of electrical motor outputs power to the sun wheel 29 of NGW-NW composite planetary gear drive, through public pinion carrier 28, power is passed to differential gear box 15, then power is reached major semiaxis 31 and semi-minor axis 19 respectively by the distally axle side gear 23 of diff and nearside axle side gear 20; Further, power passes on the wheel hub 36 of nearside drive wheel 17 through attachment bolt through nearside axle housing 21 by semi-minor axis 19, and power then passes on the wheel hub 36 of distally drive wheel 1 through attachment bolt through the NGW-NW composite planetary gear drive of hollow, the electrical motor of hollow and distally axle housing 2 by major semiaxis 31 successively.
The high and low gear transmission that the mid-electrical motor integral type two of the present embodiment keeps off electronic bridge be achieved in that when low gear gearshift 40 tighten up that low gear brake collar 8 makes low gear gear ring 10 locking, high gear gearshift 39 unclamp high gear brake collar 26 high gear gear ring 25 is freely rotated time, electronic bridge works in low gear; When high gear gearshift 39 tighten up that high gear brake collar 26 makes high gear gear ring 25 locking, low gear gearshift 40 unclamp low gear brake collar 8 low gear gear ring 10 is freely rotated time, electronic bridge works in high gear.
The high and low gear that described mid-electrical motor integral type two keeps off electronic bridge switches the motor speed signal that the accelerator travel signal that is achieved in that electronic control unit 38 gathers according to accelerator travel sensor 37 and motor speed sensor 34 gather, and when shifts gears according to the Shifting decision of setting in advance; When needs switch to low gear, first electronic control unit 38 sends moment of torsion output command to high gear gearshift electrical motor 39a, drive high gear screw mandrel 39c to rotate and promote high gear nut 39e to the direction translation close to high gear gearshift electrical motor 39a, further compression holddown spring 39d to remove the thrust acted on high gear lever 39f, thus makes high gear brake collar 26 unclamp; Through of short duration time gap (usually within 0.5 second, but concrete time gap should be determined when designing Shifting) after electronic control unit 38 send moment of torsion output command to low gear gearshift electrical motor 40a, drive low gear screw mandrel 40c to rotate and promote low gear nut 40e to the direction translation away from low gear gearshift electrical motor 40a, overcome the elastic force of pull back spring 40d and promote low gear lever 40f and rotate around low gear pivot 40g, thus tightening up low gear brake collar 8 and locking low gear gear ring 10.When needs switch to high gear, first electronic control unit 38 makes low gear gearshift electrical motor 40a power-off, low gear nut 40e under the effect of pull back spring 40d to the direction translation close to low gear gearshift electrical motor 40a, remove the thrust that low gear lever 40f acts on low gear push rod 40h, thus unclamp low gear brake collar 8 and make low gear gear ring 10 free to rotate; Through of short duration time gap (usually within 0.5 second, but concrete time gap should be determined when designing Shifting) after electronic control unit 38 make high gear shift gears electrical motor 39a power-off, high gear nut 39e under the effect of holddown spring 39d to the direction translation away from high gear gearshift electrical motor 39a, applying application force in high gear lever 39f promotes high gear push rod 39h and is tightened up by high gear brake collar 26, thus high gear gear ring 25 is by locking.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. mid-electrical motor integral type two keeps off an electronic bridge, comprises electrical motor, driving device and diff, and described diff is connected with the drive wheel of both sides respectively by the semiaxis of both sides, it is characterized in that:
Described electrical motor and described driving device are hollow structure, described electrical motor, described driving device and described diff arranged in co-axial alignment arrange and described electrical motor between the described drive wheel of both sides, connect the semiaxis activity of described diff and the drive wheel near described electrical motor side through described electrical motor and described driving device;
Described driving device is multi-stage planetary gear transmission device, described multi-stage planetary gear transmission device comprises and to be connected with the rotor of described electrical motor and with the sun wheel of described rotor turns, one end and described rotor rotate and are connected the pinion carrier that the other end is connected with described diff, engage with described sun wheel and the first row star-wheel in described pinion carrier can be arranged on around own axis, engaging with described the first row star-wheel also can around the low gear gear ring of own axis, the second satellite gear in described pinion carrier can be arranged on around own axis, engaging with described second satellite gear also can around the high gear gear ring of own axis, for the low gear brake component braked described low gear gear ring, for the high gear brake component braked described high gear gear ring and the operating control driving described low gear brake component and described high gear brake component.
2. one according to claim 1 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: the diameter of described the first row star-wheel is greater than described second satellite gear; The diameter of described low gear gear ring is greater than described high gear gear ring.
3. one according to claim 1 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described low gear brake component comprises fixed cover and is located at the low gear gear ring brake wheel on the outer circumference surface of described low gear gear ring, the low gear brake collar be set on the outer circumference surface of described low gear gear ring brake wheel; Described high gear brake component comprises fixed cover and is located at the high gear gear ring brake wheel on the outer circumference surface of described high gear gear ring, the high gear brake collar be set on the outer circumference surface of described high gear gear ring brake wheel.
4. one according to claim 3 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described operating control comprises the motor speed sensor for gathering motor speed signal, for gathering the accelerator travel sensor of accelerator travel signal, for receiving described motor speed signal and described accelerator travel signal and sending the electronic control unit of gear shifting signal, be connected with described electronic control unit and drive described low gear brake collar to tighten up or loosen the low gear gearshift of described low gear gear ring brake wheel, be connected with described electronic control unit and drive described high gear brake collar to tighten up or loosen the high gear gearshift of described high gear gear ring brake wheel.
5. one according to claim 4 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described low gear gearshift comprise the low gear be connected with described electronic control unit shift gears electrical motor, be connected to described low gear and shift gears low gear screw mandrel on the output shaft of electrical motor, one end and the inconsistent other end of described low gear screw mandrel and the inconsistent low gear lever of described low gear brake collar; Described high gear gearshift comprise the high gear be connected with described electronic control unit shift gears electrical motor, be connected to described high gear and shift gears the inconsistent high gear lever of high gear screw mandrel on the output shaft of electrical motor, the inconsistent other end in end of one end and described high gear screw mandrel and described high gear brake collar.
6. one according to claim 5 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described low gear gearshift also comprise to be connected on described low gear screw mandrel one conflict the low gear nut of described low gear lever, the pull back spring supporting seat be fixed on described low gear gearshift electrical motor, be connected to described pull back spring supporting seat and described low gear nut chien shih described in low gear nut there is the pull back spring of the trend away from described low gear lever; Described high gear gearshift also comprise to be connected on described high gear screw mandrel one conflict the high gear nut of described high gear lever, the spring perch be fixed on described high gear gearshift electrical motor, be connected to described spring perch and described high gear nut chien shih described in high gear nut there is the holddown spring of the trend pushing against described low gear lever.
7. one according to claim 6 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described low gear gearshift also comprises the low gear inconsistent with described low gear brake collar and adjusts screw; Described high gear gearshift also comprises the high gear inconsistent with described high gear brake collar and adjusts screw.
8. the mid-electrical motor of the one according to claim 1 to 7 any one integral type two keeps off electronic bridge, it is characterized in that: described semiaxis comprises major semiaxis and semi-minor axis, and the length of described major semiaxis is greater than described semi-minor axis; Described drive wheel comprises the distally drive wheel away from described diff and the nearside drive wheel near described diff, described major semiaxis one end is connected other end activity and is connected with described distally drive wheel through after described driving device and described electrical motor with described diff, described semi-minor axis one end is connected the other end and is connected with described nearside drive wheel with described diff; Described electrical motor comprises motor field frame and is arranged on the stators and rotators in described motor field frame, and described rotor is hollow, and described major semiaxis activity is through described rotor; Described motor field frame is fixedly connected with distally axle housing near one end of described distally drive wheel, and described distally drive wheel is rotatably supported on the axle housing of described distally; One end near described nearside drive wheel on described motor field frame is fixedly connected with nearside axle housing, and described nearside drive wheel is rotatably supported on described nearside axle housing.
9. one according to claim 8 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: the dividing plate in described motor field frame with band endoporus, the inner chamber of described motor field frame is separated into the first cavity away from described diff and the second cavity near described diff by described dividing plate, described stator and described rotor are positioned at described first cavity, and described driving device is positioned at described second cavity; Described diff rotates and is arranged in described nearside axle housing.
10. one according to claim 9 mid-electrical motor integral type two keeps off electronic bridge, it is characterized in that: described diff comprises the rotatable differential gear box, the apparatus of taper planetary wheel axle be fixed in described differential gear box, the apparatus of taper planetary wheel be arranged on described apparatus of taper planetary wheel axle that arrange, and the described semiaxis of described diff both sides engages with described apparatus of taper planetary wheel respectively by gear; One end of described pinion carrier is connected with described rotor turns by pinion carrier clutch shaft bearing, the other end to be rotatably supported in the endoporus of described dividing plate by pinion carrier second bearing and to be coaxially connected by spline with described differential gear box, and described differential gear box is rotatably supported on described nearside axle housing by differential case bearing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510268267.3A CN104875608A (en) | 2015-05-25 | 2015-05-25 | Center motor integrated two-gear electric axle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510268267.3A CN104875608A (en) | 2015-05-25 | 2015-05-25 | Center motor integrated two-gear electric axle |
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| CN104875608A true CN104875608A (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510268267.3A Pending CN104875608A (en) | 2015-05-25 | 2015-05-25 | Center motor integrated two-gear electric axle |
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