CN107344488A - Pure two grades of transaxles of electric commercial vehicle and pure electric commercial vehicle - Google Patents

Abstract

The present invention discloses a kind of two grades of transaxles of pure electric commercial vehicle and pure electric commercial vehicle, it includes motor, two speed gear, main reducing gear, differential mechanism, banjo axle, Wheel-side planetary reducer and driving wheel, motor is fixedly connected on two speed gear housing, and two speed gear is fixedly attached on axle housing.There is two speed gear input shaft, output gear, 2 gear trains and 1 to slidably engage set.Each gear train includes active roller gear and passive roller gear.Slidably engage and be set between the passive roller gear of first gear group and the passive roller gear of second gear group, slidably engage to be enclosed in splined hub and slide, splined hub is fixedly connected with output shaft；When slidably engaging set and sliding to side, output shaft and the engagement of first gear group；When slidably engaging set and sliding to opposite side, output shaft and the engagement of second gear group.The invention has the advantages that：It is compact-sized；It is in light weight；System effectiveness is high, saves electric energy；Large speed ratio can be realized.

Description

Pure two grades of transaxles of electric commercial vehicle and pure electric commercial vehicle

Technical field

The invention belongs to pure electric commercial vehicle driveline product field.More specifically, the present invention is a kind of pure electronic businessWith two grades of transaxles of car, the transaxle is integrated with horizontal motor and roller gear speed changer, isA kind of rear wheel drive bridge that can realize two grades of speed changing functions.

Background technology

Existing pure electric commercial vehicle dynamical system is primarily present the following two kinds form：One kind is that motor passes through biographyMoving axis directly imparts power to drive axle, and another kind is that motor connection gearbox is passed by power transmission shaft again afterwardsGraduating power is to drive axle.The shortcomings that the first form, includes：Motor weight is big；Moment of torsion and the range of speeds are narrow；System high efficiency rate region is small；Structure is not compact enough.Second of form has as a drawback that：Structure is not compact enough；IntoThis height；Gross weight is big.

The content of the invention

The present invention provides a kind of pure two grades of transaxles of electric commercial vehicle and pure electric commercial vehicle.

In the present invention, transaxle mainly by motor, two speed gear, main reducing gear, differential mechanism,Banjo axle, Wheel-side planetary reducer and driving wheel etc. form.

There is two speed gear input shaft, output gear, 2 gear trains and 1 to slidably engage set.

The housing of two speed gear have the first wall, the second wall, the 3rd wall connected between the first and the second wall,The 4th wall being connected with motor and the 5th wall being connected with axle housing.First and second gear trains are arranged in above-mentioned shellIn vivo.First gear group is close to the first wall, and second gear group is close to the second wall.

In addition, the first gear group of two speed gear includes active roller gear and passive roller gear, active cylinderGear is fixedly connected with input shaft, and passive roller gear is supported on output shaft by bearing.Second gear group is also wrappedActive roller gear and passive roller gear are included, active roller gear is fixedly connected with input shaft, passive roller gearIt is supported on by bearing on output shaft.

In addition, two speed gear, which has one, slidably engages set.The above-mentioned set that slidably engages can slide in splined hub,Splined hub is fixedly connected with output shaft.When slidably engaging set and sliding to side, output shaft and the engagement of side driven gear,Realize a kind of power transmission of fast ratio；When slidably engaging set and sliding to opposite side, output shaft and opposite side driven gearEngagement, realize the power transmission of another fast ratio；When slidably engage set positioned at it is middle when, speed changer is in neutral gear shapeState.

On the other hand, the invention provides the main reducing gear being made up of the active and passive gear of external toothing cylinder.The master subtractsThe driving gear of fast device is the output gear of above-mentioned speed changer, and driven gear is connected with differential casing.Differential mechanismPower is transferred to left and right wheels side planetary reducer by left and right axle shaft gear by semiaxis respectively, then driving momentRealize the traveling of vehicle.Above-mentioned wheel side planetary reducer includes gear ring, planetary gear, planet carrier and sun gearDeng.Wherein, gear ring is fixedly connected with axle housing, and sun gear is fixedly connected with semiaxis, planet carrier be fixedly attached to wheel hub,Wheel rim and wheel.

The technical scheme is that：

A kind of two grades of transaxles of pure electric commercial vehicle, it is characterised in that

Including motor, two speed gear, main reducing gear, differential mechanism；

Motor is fixedly attached on two speed gear housing；

Two speed gear includes input shaft, first gear group, second gear group, output shaft, output gear and cunningDynamic engaging cover type gearshift；

First gear group includes active roller gear and passive roller gear, and active roller gear is fixed with input shaft to be connectedConnect, passive roller gear is supported on output shaft by bearing；

Second gear group includes active roller gear and passive roller gear, and active roller gear is fixed with input shaft to be connectedConnect, passive roller gear is supported on output shaft by bearing；

Slidably engage shell type gearshift be arranged on first gear group passive roller gear and second gear group it is passiveBetween roller gear, slidably engaging shell type gearshift includes slidably engaging set, splined hub, slidably engages and is enclosed on flowerSlided on key hub, splined hub is fixedly connected with output shaft；

When slidably engaging set and sliding to side, the passive roller gear engagement of output shaft and first gear group；When slip is nibbledWhen trap slides to opposite side, the passive roller gear engagement of output shaft and second gear group.

Further, the housing of two speed gear has the first wall, the second wall, connected between the first and the second wallThe 3rd wall, the 4th wall being connected with motor and the 5th wall being connected with axle housing, the first and second gear train clothPut in housing, first gear group is close to the first wall, and second gear group is close to the second wall.

Further, input shaft one end is supported by left bearing by the first wall, and the other end is by right bearing by the second wallSupporting；Output gear is fixedly connected with output shaft, and output gear, output shaft are respectively by bearing by the first wall andTwo walls support.

Further, first gear group is different from the gearratio of second gear group.

Further, when slidably engaging set to a Slideslip, splined hub is connected with the first intermediate member, with limitThe passive roller gear of first gear group processed is rotated relative to output shaft, and the power of input shaft is transmitted by first gear groupTo output shaft；When slidably engaging set to another Slideslip, splined hub is connected with the second intermediate member, with limitationRelative to the rotation of output shaft, the power of input shaft transmitted the passive roller gear of second gear group by second gear groupTo output shaft.

Further, slidably engage set positioned at it is middle when, two speed gear is in neutral state.

Further, in addition to banjo axle, Wheel-side planetary reducer and driving wheel, motor pass through two gradesTransmission input shaft imparts power to two speed gear, and the output gear of two speed gear is the active of main reducing gearGear, the power of two speed gear output pass to left and right semiaxis via main reducing gear, differential mechanism, then through third wheel sidePlanetary reduction gear is transferred to left and right wheelses.

Further, main reducing gear includes external toothing column type driving gear, driven gear, the active of main reducing gearGear is the output gear of two speed gear, and the driven gear of main reducing gear is connected with differential casing；Differential mechanismPower is transferred to left and right wheels side planetary reducer by left and right axle shaft gear by semiaxis respectively, then driving momentRealize the traveling of vehicle.

Further, wheel side planetary reducer includes gear ring, planetary gear, planet carrier and sun gear, wherein,Gear ring is fixedly connected with axle housing, and sun gear is fixedly connected with semiaxis, and planet carrier is fixedly attached to wheel hub, wheel rim and carWheel.

A kind of pure electric commercial vehicle, it uses a kind of above-mentioned pure two grades of transaxles of electric commercial vehicle.

The present invention has but is not limited to, all or part of advantage：It is compact-sized, in light weight, system effectiveness is high, sectionAbout electric energy, large speed ratio can be realized.

Brief description of the drawings

Fig. 1 is a kind of signal of one embodiment of pure two grades of transaxles of electric commercial vehicle based on the present inventionFigure.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described.Describe substantially only to be exemplary, and unlimited belowThe use range of the fixed present invention.

As shown in figure 1, pure two grades of transaxles of electric commercial vehicle are mainly by motor 202, two speed transmission14th, main reducing gear 60, differential mechanism 220, banjo axle 230, the and of left/right Wheel-side planetary reducer 310/320Left/right driving wheel 252/254 forms.

Speed changer 10 is lateral gear, and the speed changer includes case of transmission 14, input shaft 12, output gear60A and gear train 18 etc..Input shaft 12 is connected with the armature spindle 204 of motor 202.Output gear 60AEngaged with main reducing gear driven gear 60B.

Case of transmission 14 includes the first wall 102, the second wall 104, the 3rd wall 106, the 4th wall 105 and theFive walls 108 form.3rd wall connects the first and second walls, and the 4th wall 105 passes through bolt 162 and motor 202Connection, the 5th wall 108 are connected by bolt 164 with axle housing 230.Input shaft 12 is by left bearing 72 by firstWall 102 supports, and is supported by right bearing 74 by the second wall 104.Output gear 60A fixes with output shaft 30 to be connectedConnect, the latter is supported by clutch shaft bearing 82 and second bearing 88 by the first wall 102 and the second wall 104 respectively.BecomeFast device gear train 18, and the space for slidably engaging set 40 and being respectively positioned on the encirclement of case of transmission 14 for gearshiftIt is interior.

Transmission gear system 18 includes first gear group 20 and second gear group 22.

First gear group 20 includes the passive roller gear 20B of the first active roller gear 20A and first.First masterDynamic roller gear 20A is fixedly connected with input shaft 12, to rotate jointly.First passive roller gear 20B passes through3rd bearing 84 is supported on output shaft 30, and both can be with the coaxial rotation of different rotating speeds.Second gear group 22 includesThe passive roller gear 22B of second active roller gear 22A and second.Second active roller gear 22A and input shaft12 are fixedly connected, to rotate jointly.Second passive roller gear 22B is supported on output shaft by fourth bearing 86On 30, both can be with the coaxial rotation of different rotating speeds.

The shift process of speed changer 10 is as follows：Splined hub 44 is fixedly connected with output shaft 30, slidably engages set 40It can be horizontally slipped in splined hub 44.When slidably engage set 40 slide to the left when, by splined hub 44 and pars intermediaPart 42 connects, the rotation with the first passive roller gear 20B of limitation relative to output shaft 30, at this moment input shaft 12Power output shaft 30 is passed to by first gear group 20；When slidably engage set 40 slide to the right when, by splineHub 44 and intermediate member 46 connect, to limit rotations of the second passive roller gear 22B relative to output shaft 30,At this moment the power of input shaft 12 passes to output shaft 30 by second gear group 22；It is located at when slidably engaging set 40During centre position, speed changer 10 is in neutral state.

Speed changer 10 can realize two kinds of different fast ratios between input shaft 12 and output gear 60A.Assuming that firstThe tooth ratio (passive Tooth Number of Gear/active Tooth Number of Gear) of gear train 20 is i₀₁, second gear group 22Tooth ratio be i₀₂.When slidably engaging set 40 and sliding to the left, the fast ratio of speed changer 10 is i₀₁.When slidably engagingWhen set 40 slides to the right, the fast ratio of speed changer 10 is i₀₂.Reversing is inverted by motor and realized.

Main reducing gear 60 is made up of active roller gear 60A and passive roller gear 60B, wherein active Cylinder GearWheel 60A is the output gear of speed changer 10.The power that speed changer 10 exports is via main reducing gear 60 and differentialDevice 220 passes to left half axle 242 and right axle shaft 244, and left and right semiaxis passes through revolver side planetary gearsets 310 respectively againLeft wheel 252 and right wheel 254 are transferred power to right wheel side planetary gearsets 320.Wherein, revolver side rowStar gear train 310 include gear ring 310A, one group of planetary gear 310D of rotatable supporting planet carrier 310B andSun gear 310C.Gear ring 310A is fixedly connected with axle housing 230, and sun gear 310C fixes with left half axle 242 to be connectedConnect, planet carrier 310B is fixedly connected with left wheel hub (not shown).Right wheel side planetary gearsets 320 includeOne group of gear ring 320A, rotatable supporting planetary gear 320D planet carrier 320B and sun gear 320C.Gear ring320A is fixedly connected with axle housing 230, and sun gear 320C is fixedly connected with right axle shaft 244, planet carrier 320B withRight wheel hub (not shown) is fixedly linked.

Description of the invention is substantially only exemplary, and any modification without departing from main idea of the present invention is included in thisWithin the scope of invention.

Claims (10)

1. A kind of 1. two grades of transaxles of pure electric commercial vehicle, it is characterised in that

   Including motor, two speed gear, main reducing gear, differential mechanism；

   Motor is fixedly attached on two speed gear housing；

   Two speed gear include input shaft, first gear group, second gear group, output shaft, output gear withAnd slidably engage shell type gearshift；

   First gear group includes active roller gear and passive roller gear, and active roller gear is consolidated with input shaftFixed connection, passive roller gear are supported on output shaft by bearing；

   Second gear group includes active roller gear and passive roller gear, and active roller gear is consolidated with input shaftFixed connection, passive roller gear are supported on output shaft by bearing；

   Slidably engage passive roller gear and second gear group that shell type gearshift is arranged on first gear groupBetween passive roller gear, slidably engaging shell type gearshift includes slidably engaging set, splined hub, and slip is nibbledTrap is slided in splined hub, and splined hub is fixedly connected with output shaft；

   When slidably engaging set and sliding to side, the passive roller gear engagement of output shaft and first gear group；Work as cunningWhen dynamic engaging sleeve slides to opposite side, the passive roller gear engagement of output shaft and second gear group.
2. 2. a kind of pure two grades of transaxles of electric commercial vehicle according to claim 1, it is characterised in that two gradesThe housing of speed changer has the first wall, the second wall, the 3rd wall connected between the first and the second wall and driven4th wall of dynamic motor connection and the 5th wall being connected with axle housing, the first and second gear trains are arranged in housing,First gear group is close to the first wall, and second gear group is close to the second wall.
3. A kind of 3. pure two grades of transaxles of electric commercial vehicle according to claim 1, it is characterised in that inputAxle one end is supported by left bearing by the first wall, and the other end is supported by right bearing by the second wall；Output gearIt is fixedly connected with output shaft, output gear, output shaft are supported by bearing by the first wall and the second wall respectively.
4. 4. a kind of pure two grades of transaxles of electric commercial vehicle according to claim 2, it is characterised in that firstGear train is different from the gear ratio of second gear group.
5. 5. a kind of pure two grades of transaxles of electric commercial vehicle according to any one of claims 1 to 4, its feature existIn, when slidably engage set to a Slideslip when, splined hub is connected with the first intermediate member, to limit firstThe passive roller gear of gear train is rotated relative to output shaft, and the power of input shaft is passed to by first gear groupOutput shaft；When slidably engaging set to another Slideslip, splined hub is connected with the second intermediate member, with limitFor the passive roller gear of second gear group processed relative to the rotation of output shaft, the power of input shaft passes through second gearGroup passes to output shaft.
6. 6. a kind of pure two grades of transaxles of electric commercial vehicle according to any one of claims 1 to 4, its feature existIn, slidably engage set positioned at it is middle when, two speed gear is in neutral state.
7. 7. a kind of pure two grades of transaxles of electric commercial vehicle according to any one of claims 1 to 4, its feature existIn, in addition to banjo axle, Wheel-side planetary reducer and driving wheel, motor pass through two speed gearInput shaft imparts power to two speed gear, and the output gear of two speed gear is the driving tooth of main reducing gearWheel, the power of two speed gear output pass to left and right semiaxis via main reducing gear, differential mechanism, then through third wheelSide planetary reduction gear is transferred to left and right wheelses.
8. 8. a kind of pure two grades of transaxles of electric commercial vehicle according to any one of claims 1 to 4, its feature existIn main reducing gear includes external toothing column type driving gear, driven gear, and the driving gear of main reducing gear isThe output gear of two speed gear, the driven gear of main reducing gear are connected with differential casing；A left side for differential mechanismPower is transferred to left and right wheels side planetary reducer by right axle shaft gear by semiaxis respectively, then drives carWheel realizes the traveling of vehicle.
9. A kind of 9. pure two grades of transaxles of electric commercial vehicle according to claim 8, it is characterised in that wheel sidePlanetary reducer includes gear ring, planetary gear, planet carrier and sun gear, wherein, gear ring is consolidated with axle housingFixed connection, sun gear are fixedly connected with semiaxis, and planet carrier is fixedly attached to wheel hub, wheel rim and wheel.
10. 10. a kind of pure electric commercial vehicle, it is characterised in that any described a kind of pure using the claims 1 to 9Two grades of transaxles of electric commercial vehicle.