CN208914949U - Electric drive axle and vehicle - Google Patents
Electric drive axle and vehicle Download PDFInfo
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- CN208914949U CN208914949U CN201821154461.4U CN201821154461U CN208914949U CN 208914949 U CN208914949 U CN 208914949U CN 201821154461 U CN201821154461 U CN 201821154461U CN 208914949 U CN208914949 U CN 208914949U
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- drive axle
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Abstract
The utility model relates to a kind of electric drive axle and vehicles.Including axle case assy and two electric drive axle units, two electric drive axle units are installed in the opposite sides of the axle case assy；The electric drive axle unit includes: driving motor, including motor shaft；Semiaxis is coaxially disposed with the motor shaft；And speed reducer assembly, including retarder, the motor shaft is connect with the input terminal of the retarder, and the semiaxis is located at the retarder close to the side of hub for vehicle wheel, one end of the semiaxis is connect with the output end of the retarder, and the other end of the semiaxis is connect with the hub for vehicle wheel.Motor shaft and semiaxis are coaxially disposed, so that driving motor is not influenced each other with brake, and electric drive axle structure is simple, increases the road clearance by electric drive axle rolling stock provided by the utility model, and electric drive axle is made to be suitable for semitrailer.
Description
Technical field
The utility model relates to technical field of vehicle, more particularly to a kind of electric drive axle and vehicle.
Background technique
Currently, semitrailer usually not uses dynamical system, after needing to connect by hookup with tractor, by drawing
Vehicle provides power could normally travel.
Now there is a kind of centralized electric drive axle in the market, uses two wheels of a motor driven, cannot achieve wheel
Distributed driving, there are system of vehicle transmission efficiency is lower and the problems such as turning radius is big.
There are also a kind of wheel side electric drive axles in the market, individually drive a wheel using two motors, wheel side electricity drives
The motor of dynamic bridge is arranged close to wheel, and its reducer structure is complicated, volume is big and weight weight, compares so as to cause the road clearance
It is small, semitrailer can not be suitable for.
Utility model content
Based on this, it is necessary to there is no a dynamical system for existing semitrailer, and existing centralized drive axle and Direct wheel drives
Bridge all existing defects, and then the problem of be not all suitable for semitrailer, a kind of electric drive axle and vehicle suitable for semitrailer is provided.
A kind of electric drive axle, including axle case assy, drive motor units and two electric drive axle units, drive motor units
Including two motor shafts, two electric drive axle units are installed in the opposite sides of the axle case assy, two motors
Axis is connect with two electric drive axle units respectively；The electric drive axle unit includes: semiaxis, is coaxially set with the motor shaft
It sets；And speed reducer assembly, including retarder, the motor shaft connect with the input terminal of the retarder, the semiaxis is located at institute
Side of the retarder far from the drive motor units is stated, one end of the semiaxis is connect with the output end of the retarder, institute
The other end for stating semiaxis is connect with hub for vehicle wheel.
By the way that motor shaft to be directly coaxially disposed with semiaxis, and complete to slow down only with retarder, therefore electric drive axle structure
Simply, and then the road clearance is increased, so that the electric drive axle of the utility model is not only able to achieve driving motor and is operated alone one
Wheel, and it is suitable for semitrailer.
The speed reducer assembly further includes hub reduction gear in one of the embodiments, and the semiaxis is located at described subtract
Between fast device and the hub reduction gear, and the both ends of the semiaxis subtract with the output end of the retarder and the wheel side respectively
The input terminal of fast device connects, and the output end of the hub reduction gear is connect with the hub for vehicle wheel.
The drive motor units include birotor driving motor in one of the embodiments, the birotor driving
Motor includes internal rotor, around the outer rotor of the internal rotor and two motor shafts；The internal rotor and a wherein institute
It states motor shaft to be fixedly connected and be coaxially disposed, the outer rotor is fixedly connected and is coaxially disposed with wherein another motor shaft.
The electric drive axle further includes brake and suspension frame structure, the brake setting in one of the embodiments,
On the inside of the hub for vehicle wheel, the suspension frame structure is installed on the axle case assy, and be set to the brake with it is described
Between retarder.
The suspension frame structure is Leaf Spring Suspension or the arm-type air suspension of guiding in one of the embodiments,.
The retarder is planetary reducer, including the first speed reducer housing, first in one of the embodiments,
Ring gear, the first planetary gear, first planet carrier and the first sun gear, first speed reducer housing are fixed on the axle case assy
On, first ring gear is fixed on first speed reducer housing, and first sun gear is engaged with the planetary gear, described
First planetary gear is engaged with first ring gear, and first sun gear is the input terminal of the retarder, the first row
Carrier is the output end of the retarder.
In one of the embodiments, the hub reduction gear be planetary reducer, including the second speed reducer housing,
Second ring gear, the second planetary gear, the second planet carrier and the second sun gear, the electric drive axle further includes axle tube, described
Axle tube is fixedly connected with the axle case assy, and second ring gear is fixed on the axle tube, and the semiaxis passes through
The axle tube is connect with second sun gear, and second sun gear is engaged with second planetary gear, and described second
Planetary gear is engaged with second ring gear, and second planet carrier is connect with second speed reducer housing, and described second subtracts
Fast device shell is fixed on the hub for vehicle wheel, and second sun gear is the input terminal of the hub reduction gear, second row
Carrier is the output end of the hub reduction gear.
A kind of electric drive axle, including axle case assy, drive motor units and two electric drive axle units, the driving motor
Unit includes two motor shafts, and two electric drive axle units are installed in the opposite sides of the axle case assy, described in two
Motor shaft is connect with two electric drive axle units respectively；The electric drive axle unit includes semiaxis, one end of the semiaxis
With the motor axis connection, the semiaxis and the motor shaft are coaxially disposed；And hub reduction gear, the semiaxis are located at the drive
Between dynamic motor and the hub reduction gear, and the other end of the semiaxis is connect with the input terminal of the hub reduction gear, institute
The output end for stating hub reduction gear is connect with hub for vehicle wheel.
It completes to slow down by using hub reduction gear, therefore electric drive axle structure is simple, and then increases the road clearance, so that
The electric drive axle of the utility model is not only able to achieve drive motor units and a wheel is operated alone, and is suitable for semitrailer.
The drive motor units are birotor driving motor in one of the embodiments, the birotor driving electricity
Machine includes internal rotor, around the outer rotor of the internal rotor and two motor shafts；The internal rotor with wherein described in one
Motor shaft is fixedly connected and is coaxially disposed, and the outer rotor is fixedly connected and is coaxially disposed with wherein another motor shaft.
The electric drive axle further includes brake and suspension frame structure, the brake setting in one of the embodiments,
On the inside of the hub for vehicle wheel, the suspension frame structure is installed on the axle case assy, and be set to the brake with it is described
Between driving motor.
The suspension frame structure is Leaf Spring Suspension or the arm-type air suspension of guiding in one of the embodiments,.
A kind of vehicle including car body and is connected to the above-mentioned electric drive axle of the car body.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the electric drive axle in the utility model first embodiment；
Fig. 2 is the structural schematic diagram of the driving motor in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the drive motor units in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the axle case assy in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram at another visual angle of axle case assy shown in Fig. 4；
Fig. 6 is the structural schematic diagram of the axle case assy in another embodiment of the utility model；
Fig. 7 is the structural schematic diagram of the retarder of electric drive axle shown in FIG. 1；
Fig. 8 is the structural schematic diagram of the electric drive axle in the utility model second embodiment；
Fig. 9 is the structural schematic diagram of the hub reduction gear of electric drive axle shown in Fig. 8；
Figure 10 is the structural schematic diagram of the electric drive axle in the utility model 3rd embodiment；
Figure 11 is the partial structure diagram of electric drive axle shown in Fig. 10；
Figure 12 is that suspension frame structure is the structural schematic diagram for being oriented to arm-type air suspension structure in electric drive axle shown in Fig. 10.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein "inner", "outside", "left", "right" and
Similar statement for illustrative purposes only, is not meant to be the only embodiment.
The technical solution of the utility model in order to facilitate understanding, before explanation is developed in details, first to existing wheel side
Electric drive axle structure is illustrated.
Existing wheel side electric drive axle, is commonly available in the car vehicle of low-floor requirement, and motor leans on two sides wheel
Setting, and two-stage speed ratio speed reducer assembly is used, level-one generallys use cylinder gear speed reducer, and input shaft is motor shaft,
Output shaft is semiaxis, and second level uses planetary reducer, and input shaft is semiaxis, and output shaft is planet carrier, planet carrier and wheel
Wheel hub connection.
But because vehicle wheel side is additionally provided with brake, motor and the brake position of wheel side are set in order to prevent
Interference is set, motor shaft and semiaxis eccentric setting need to be set, to provide position installation brake.Therefore, first stage decelerator is caused
Structure is complicated, volume is big and weight weight, and causes vehicle ground clearance small, therefore to requiring needed for road clearance big semitrailer
Electric drive axle, the wheel side electric drive axle is not applicable.
Accordingly, it is desirable to provide a kind of electric drive axle and vehicle suitable for semitrailer.
As shown in Figure 1, the electric drive axle 100 that the utility model first embodiment provides, including axle case assy 10, driving
Electric motor units and two electric drive axle units, drive motor units include two motor shafts 21, two electric drive axle unit installings
In axle case assy opposite sides, two motor shafts 21 are connect with two electric drive axle units respectively, and electric drive axle unit includes driving
Dynamic electric motor units 20, semiaxis 30 and speed reducer assembly.
Semiaxis 30 and motor shaft 21 are coaxially disposed, and speed reducer assembly includes retarder 40, motor shaft 21 and retarder 40
Input terminal connection, semiaxis 30 are located at side of the retarder 40 far from drive motor units, one end and the retarder 40 of semiaxis 30
Output end connection, the other end of semiaxis 30 are connect with hub for vehicle wheel 200.The motor shaft 21 of drive motor units 20 by driving force according to
It is secondary that hub for vehicle wheel 200 is transferred to by retarder 40 and semiaxis 30.
It should be understood that the semiaxis 30 and motor shaft 21 in drive motor units are coaxially disposed, which refers to
Motor shaft 21 is correspondingly connected with the drive motor units.
In this way, since semitrailer is not necessarily to consider the low-floor requirement of car vehicle, therefore by the electricity of drive motor units 20
Arbor 21 and semiaxis 30 are coaxially disposed, and then make the position mutually not shadow of the brake on drive motor units 20 and vehicle wheel side
It rings.
In addition, being coaxially disposed motor shaft 21 directly with semiaxis 30, and complete to slow down only with retarder 40, therefore electric drive
400 structure of bridge is simple, and then increases the road clearance, so that the electric drive axle 100 of the utility model is not only able to achieve driving electricity
A wheel is operated alone in machine unit 20, and is suitable for semitrailer.It should be understood that the electric drive axle 100 of the utility model is suitable
For semitrailer, refer to that the electric drive axle 100 of the utility model is primarily adapted for use in semitrailer, but be not limited to the semitrailer.
In some embodiments, drive motor units 20 are installed on the middle part of axle case assy 10.In this way, driving entire electricity
The arrangement space of dynamic bridge 100 is elongated, and further the brake for vehicle wheel side leaves sufficient installation space.
In some embodiments, drive motor units 20 include two driving motors 22, and two driving motors 22 include
Two motor shafts 21.
In some embodiments, center symmetric setting of two electric drive axle units with respect to axle case assy 10.In this way, two
The torque that electric drive axle unit transmits corresponding hub for vehicle wheel 200 is uniform, and two electric drive axle units are mounted on car body
On, make car body stress equalization.
As shown in Fig. 2, in some embodiments, driving motor 22 can be include disc type electric machine.Disc type electric machine includes turning
Son 221, stator 222 and terminals 223.Disc type electric machine is compared with traditional motor, the higher, peak torque with power density
Greatly, high efficient district field width, and the advantage that noise, vibration, size and weight are small, can make the structure of electric drive axle 100 it is more compact,
Weight is lighter and work efficiency is high.
Referring to Fig. 1, in specific some embodiments, two driving motors 22 are spaced apart from each other setting along axial direction.This
Set-up mode is convenient for the installation of driving motor 22, easy to disassemble to repair and when subsequent failure.
As shown in figure 3, drive motor units 20 include birotor driving motor, double in other specific some embodiments
Rotor driving motor includes internal rotor 231, around the outer rotor 232 of internal rotor 231 and two motor shafts 21, internal rotor 231
It is fixedly connected and is coaxially disposed with a wherein motor shaft 21, outer rotor 232 is fixedly connected and coaxially with wherein another motor shaft 21
Setting.In this way, the structure of electric drive axle 100 is more compact, weight is lighter, and can adaptively differential control, differential control
Mode processed is simple and effective.
Referring to Fig. 1, in some embodiments, axle case assy 10 includes intermediate axle housing 11, and intermediate axle housing 11 has
Accommodating cavity, drive motor units 20 are installed in accommodating cavity.In this way, also can protect driving motor list while easy for installation
Member 20 is interfered from external environment, is prolonged its service life.
In some embodiments, axle case assy 10 further includes side axle housing 12, and side axle housing 12 is located at intermediate axle housing 11 and leans on
The opposite sides of nearly hub for vehicle wheel 200, and one end of side axle housing 12 is connect with intermediate axle housing 11.
In specific some embodiments, the side wall of intermediate axle housing 11 offers an axis hole along the axial direction of motor shaft 21, the electricity
Arbor 21 passes through the axis hole and connect with electric drive axle unit.
As shown in figure 4, in some embodiments, intermediate axle housing 11 includes motor mounting plate 111, motor mounting plate 111
Side is fixedly connected with side axle housing 12, and the other side is fixedly connected with one end of driving motor 22.
In specific some embodiments, driving motor 22 is fixed by bolts in motor mounting plate 111.
In some embodiments, axis hole is opened on motor mounting plate 111.
In some embodiments, axle case assy 11 further includes reinforcing rib 13, reinforcing rib 13 respectively with intermediate axle housing 11 and side
Axle housing 12 connects.In this way, being fixedly connected between intermediate axle housing 11 and side axle housing 12 is more reliable.In some embodiments, add
The rectangular triangle of strengthening tendons 13.
As shown in figure 5, in some embodiments, reinforcing rib 13 is including multiple, and multiple reinforcing ribs 13 were along side axle housing 12 weeks
It is arranged to interval.
In some embodiments, reinforcing rib 13 is set between side axle housing 12 and motor mounting plate 111.
Referring to Fig. 4, in some embodiments, intermediate axle housing 11 include opposite two motor mounting plates 111 and
The opposite intermediate support plate 112 of two be connected between two motor mounting plates 111.It should be understood that two motor peaces
Loading board 111 installs two driving motors of two electric drive axle units respectively.In specific some embodiments, intermediate support plate
112 pass through solder design with motor mounting plate 111.
In some embodiments, intermediate axle housing 11 further includes first accessory mounting plate axially extending along driving motor 22
113, the first accessory mounting plate 113 is set to the side of a driving motor 22, and the periphery of the first accessory mounting plate 113 respectively with
Corresponding motor mounting plate 111 and two intermediate support plates 112 connect, 113 one end of the first accessory mounting plate and driving motor 22
One end far from motor mounting plate 111 is fixedly connected.The setting of first accessory mounting plate 113, on the one hand, driving motor can be formed
On the other hand 22 axial restraint, is conducive to reinforce motor mounting plate 111 in so that the fixation of driving motor 22 is relatively reliable
Between connection between support plate 112, mitigate the stress of motor mounting plate 111 and 112 junction of intermediate support plate.
In some embodiments, intermediate axle housing 11 further include along axially extending second accessory mounting plate 114 of driving motor 22,
Second accessory mounting plate 114 is set to the other side opposite with the first accessory mounting plate 113 of driving motor 22, the second auxiliary peace
The periphery of loading board 114 is connected with corresponding motor mounting plate 111 and two intermediate support plates 112 respectively.Second accessory mounting plate
114 setting can be reinforced to the connection between motor mounting plate 111 and intermediate support plate 112, and with the first accessory mounting plate
113 cooperation can make driving motor 22 along relatively reliable perpendicular to axially direction fixation.
In some embodiments, the first accessory mounting plate 113 and another driving motor 22 1 of 22 side of a driving motor
Second accessory mounting plate 114 of side is set to the same side, and the first accessory mounting plate 113 and the second accessory mounting plate 114 are along drive
Dynamic 22 axially spaced-apart of motor setting.The pipe of walking of cabling and cooling water pipe that this is divided into drive motor units 20 leaves cloth and empties
Between.
As shown in fig. 6, in some embodiments, two motor mounting plates, 111, two intermediate support plates 112 and bottom plate 113
It is integrally formed.In this way, simplifying the structure of intermediate axle housing 11, the intensity of intermediate axle housing 11 is improved.In some embodiments,
The whole punching weldering of intermediate axle housing 11 or casting are formed.
Referring to Fig. 1, in the present embodiment, electric drive axle 100 further includes brake 50 and suspension frame structure 60, braking
Device 50 is set to 200 inside of hub for vehicle wheel, and suspension frame structure 60 is installed on axle case assy 10, and is set to brake 50 and is slowed down
Between device 40.Since the semiaxis 30 of motor shaft 21 is coaxially disposed, in the brake 50 for making drive motor units 20 Yu vehicle wheel side
Position be mutually independent of each other in the case where, can also leave placement space for suspension frame structure 60.Conventional wheel side electric drive axle, Yin Bu
Seated position is limited, and vehicle can only be using structure is complicated, the air spring suspension of C-type beam at high cost and not being suitable for semitrailer.
The electric drive axle 100 of the utility model, it is common all kinds of outstanding in the market that sufficient placement space can be such that the electric drive axle 100 uses
Hanging hang structure increases cost without adaptively being redesigned to suspended structure again.
In the present embodiment, as shown in Figure 1, suspension frame structure 60 can be Leaf Spring Suspension.Leaf Spring Suspension has knot
The advantages such as structure is simple, high reliablity, at low cost and control are simple.In other embodiments, suspension frame structure 60 can also be leading arm
Formula air suspension, being oriented to arm-type air suspension and Leaf Spring Suspension has same advantage.
In specific some embodiments, Leaf Spring Suspension or the arm-type air suspension of guiding are along vertical perpendicular to axle case assy 10
The direction of length direction is installed on axle case assy 10.
In specific some embodiments, brake 50 is disk brake, and in other embodiments, brake 50 can be it
The brake of his structure, this is not restricted.
As shown in fig. 7, in the present embodiment, retarder 40 is planetary reducer, including the first speed reducer housing 41,
First ring gear 42, the first planetary gear 43, first planet carrier 44 and the first sun gear 45, the first speed reducer housing 41 are fixed on bridge
In housing assy 10, the first ring gear 42 is fixed on 41 first sun gear 45 of the first speed reducer housing and engages with the first planetary gear 43,
First planetary gear 43 is engaged with the first ring gear 42, and the first sun gear 45 is the input terminal of retarder 40, and first planet carrier 44 is
The output end of retarder 40.The structure of retarder 40 can realize that the motor shaft 21 of drive motor units 20 is coaxially set with semiaxis 30
It sets, set-up mode is simple, and realizes the effect for reducing revolving speed, increasing torque.Further, this structure is simple and compact, makes
The structure of speed reducer assembly is simple, quality is small and small in size, to increase the road clearance.
Specific in some embodiments, the first sun gear 45 is connect with the motor shaft 21 of drive motor units 20, the first row
Star-wheel 43 is set between the first sun gear 45 and the first ring gear 42, and the external tooth of the first planetary gear 43 respectively with first sun
The external tooth of wheel 45 and the interior tooth engagement of the first ring gear 42, retarder 40 further includes the first planet wheel spindle 46 and bearing, the first row
Star-wheel 43 is fixed on the first planet wheel spindle 46 by bearing, and first planet carrier 44 is connect with the first planet wheel spindle 46, and first
Planet carrier 44 is connect with one end of semiaxis 30.In some embodiments, which is needle bearing.
In the present embodiment, one end of the first speed reducer housing 41 is fixedly connected with intermediate axle housing 11.
In some embodiments, the first speed reducer housing 41 is hollow structure, and towards one end of drive motor units 20
The first opening is offered, the axis hole and the first opening and first that the motor shaft 21 of drive motor units 20 passes through intermediate axle housing 11 are too
45 connection of sun wheel.
In specific some embodiments, one end of the first speed reducer housing 41 is fixed on motor mounting plate 111.
In the present embodiment, first planet carrier 44 is dual-sided board separating planet frame, including is located at the first planetary gear
The first side plate 441 and the second side plate 442 of 43 opposite sides, the first side plate 441 and the second side plate 442 respectively with the first planetary gear
43 both ends of the surface abut, and the first planet wheel spindle 46 is connect with the first side plate 441 and the second side plate 442 respectively, in axial limiting
First planetary gear 43.Specifically, it is positioned between the first side plate 441 and the second side plate 442 using straight pin, screw is consolidated
It is fixed.
In some embodiments, the first side plate 441 is provided in the axial direction with through-hole, and the motor shaft 21 of drive motor units 20 is worn
The through-hole is crossed to connect with the first sun gear 45.
In the present embodiment, the center of the second side plate 442 is equipped with reducer output shaft 47, reducer output shaft 47 and semiaxis
30 one end connection.Specifically, reducer output shaft 47 couples with one end spline of semiaxis 30.Specific to some embodiments
In, the center of the second side plate 442 is equipped with internal spline, and one end of semiaxis 30 is equipped with the external splines to match with the internal spline, should manage
Solution ground is that reducer output shaft 47 refers to the internal spline at the center of the second side plate 442, in some other embodiment, is slowed down
Device output shaft 47 can be equipped with external splines, and one end of semiaxis 30 can be equipped with internal spline or other connection types, not limit herein
System.
In some embodiments, the first speed reducer housing 41 offers the second opening, and the second opening is opposite with the first opening
Setting, reducer output shaft 47 passes through the second opening, and is stretched on the second opening.
Referring to Fig. 1, in the present embodiment, the first speed reducer housing 41 one end and Bian Qiao far from intermediate axle housing 11
Shell 12 is fixedly connected.
In some embodiments, side axle housing 12 offers through-hole, and semiaxis 30 is set in side axle housing 12.In some embodiment party
In formula, reducer output shaft 47 and one end of semiaxis 30 connect in side axle housing 12.
In some embodiments, suspension frame structure 60 is installed on side axle housing 12.
In the present embodiment, electric drive axle 100 further includes attachment base 70, and attachment base 70 is fixed on semiaxis 30 far from retarder
40 one end, attachment base 420 are circumferentially fixed on the outside of hub for vehicle wheel 200.
In some embodiments, attachment base 70 and semiaxis 30 are integrally formed.The set-up mode can make semiaxis 30 relatively reliable
Power is transferred to hub for vehicle wheel 200 by attachment base 70 by ground.
As shown in figure 8, Fig. 8 shows the electric drive axle 300 in the utility model second embodiment.
The electric drive axle 100 in electric drive axle 300 and first embodiment in the embodiment has similar structure, different
Place will be explained in detail.For ease of description, the label of identical element does not change.
In the present embodiment, speed reducer assembly includes retarder 40 and hub reduction gear 310, and semiaxis 30 is located at retarder 40
Between hub reduction gear 310, and the input with the output end of retarder 40 and hub reduction gear 310 respectively of the both ends of semiaxis 30
End connection, the output end of hub reduction gear 310 are connect with hub for vehicle wheel 200.The motor shaft 21 of drive motor units 20 will drive
Power passes sequentially through retarder 40, semiaxis 30 and hub reduction gear 310 and is transferred to hub for vehicle wheel 200.
In this way, being second level speed ratio speed reducer by setting speed reducer assembly, level-one is by the motor of drive motor units 20
Axis 21 is used as input terminal, and semiaxis 30 is used as output end, and second level is by semiaxis 30 as input terminal, output end and hub for vehicle wheel 200
Connection can reach the reduction ratio for increasing electric drive axle 100, the revolving speed for improving motor shaft 21, the ruler for reducing drive motor units 20
Very little and weight, and improve the effect of the operational efficiency of drive motor units 20.
As shown in figure 9, in the present embodiment, hub reduction gear 310 is outside planetary reducer, including the second retarder
Shell 311, the second ring gear 312, the second planetary gear 313, the second planet carrier 314 and the second sun gear 315, electric drive axle 300 is also
Including axle tube 320, axle tube 320 is fixedly connected with axle case assy 10, and the second ring gear 312 is fixed on axle tube
320, semiaxis 30 passes through axle tube 320 and connect with the second sun gear 315, and the second sun gear 315 is nibbled with the second planetary gear 313
It closing, the second planetary gear 313 is engaged with the second ring gear 312, and the second planet carrier 314 is connect with the second speed reducer housing 311, and second
Speed reducer housing 311 is fixed on hub for vehicle wheel 200, and the second sun gear 315 is the input terminal of hub reduction gear 310, the second planet
Frame 314 is the output end of hub reduction gear 310.This structure is simple and compact, make that the structure of speed reducer assembly is simple, quality is small and
It is small in size, the road clearance is further increased, and when using the drive motor units 20 of the small torque of high revolving speed, subtract in satisfaction
In the case where fast device assembly speed ratio, the weight and size of drive motor units 20 can be further reduced.
Specific in some embodiments, one end of semiaxis 30 is connect with the second sun gear 315, the setting of the second planetary gear 313
Between the second sun gear 315 and the second ring gear 312, and the external tooth of the external tooth of the second planetary gear 313 and the second sun gear 315
With the interior tooth engagement of the second ring gear 312, hub reduction gear 310 further includes the second planet wheel spindle 316 and bearing, the second planetary gear
313 are fixed on the second planet wheel spindle 316 by bearing, and the second planet carrier 314 is connect with the second planet wheel spindle 316, and second
Planet carrier 314 is connect with the second speed reducer housing 311.
In some embodiments, the second planet carrier 314 extends to the other side, the second row from the side of the second planetary gear 313
One end face of star-wheel 313 is abutted with the second planet carrier 314, the second speed reducer housing of other end 311 of the second planetary gear 313
Inner wall abuts, and the second planet wheel spindle 316 is connect with the second planet carrier 314 and the second speed reducer housing 311 respectively, in axial limit
The second planetary gear 313 of position.This set-up mode can be such that opposite second planet carrier 314 of the second planetary gear 313 is reliably fixed.Specific one
In embodiment, the second planet carrier 314 is positioned with the second speed reducer housing 311 using straight pin, and screw is fixed.
In some embodiments, the second planet carrier 314 is provided in the axial direction with through-hole, and one end of semiaxis 30 stretches in axle tube
320, and pass through the through-hole and connect with the second sun gear 315.
In some embodiments, one end of axle tube 320 is fixedly connected with one end of side axle housing 12.
In some embodiments, hub reduction gear 310 further includes ring gear bracket assembly 317, ring gear bracket assembly 317
It is fixedly connected with outside axle tube 320, the second ring gear 312 is fixed on ring gear bracket assembly 317.
In some embodiments, tapered roller bearing 330, circular cone are provided between hub for vehicle wheel 200 and axle tube 320
Roller bearing 330 includes two, is respectively arranged at the inside of opposite hub for vehicle wheel 200 and the outside of hub for vehicle wheel 200.
In some embodiments, the second speed reducer housing 311 is hollow structure, and towards the one of the outside of hub for vehicle wheel 200
End offers third opening, and the second speed reducer housing 311 further includes second connecting portion, and second connecting portion is along the second speed reducer housing
311 circumferential direction is formed in the third opening, which is fixedly connected with hub for vehicle wheel 200.The tool of second connecting portion
Body structure is similar to the specific structure of first connecting portion, and details are not described herein.
In some embodiments, the second speed reducer housing 311 offers the 4th opening, the 4th opening and third opening phase
It is right.
In some embodiments, hub reduction gear 310 further includes end cap 318, and end cap 318 is covered on the 4th opening, and
It is fixedly connected with the outer end face of the second speed reducer housing 311.The setting of end cap 318 can further be protected in hub reduction gear 310
Portion's structure by external disturbance, does not have the effects that blocks dust and waterproof.
As shown in Figure 10, Figure 10 shows the electric drive axle 400 of the utility model 3rd embodiment.
The electric drive axle 400 of the embodiment and the electric drive axle 300 in second embodiment have similar structure, difference
Place, will be explained in detail.For ease of description, the label of identical element does not change.
In the present embodiment, electric drive axle 400 includes axle case assy 10, drive motor units 20 and two electric drive axle lists
Member, drive motor units include two motor shafts 21, and two electric drive axle units are installed in the opposite sides of axle case assy 10, and two
A motor shaft 21 is connect with two electric drive axle units respectively, and electric drive axle unit includes semiaxis 30 and hub reduction gear 410.
Motor shaft 21 is connect with one end of semiaxis 30, and motor shaft 21 and semiaxis 30 are coaxially disposed, and semiaxis 30 is located at driving
Between electric motor units 20 and hub reduction gear 410, and the other end of semiaxis 30 is connect with the input terminal of hub reduction gear 410, wheel
The output end of side reducer 410 is connect with hub for vehicle wheel 200.The motor shaft 21 of drive motor units 20 passes sequentially through driving force
Semiaxis 30 and hub reduction gear 410 are transferred to hub for vehicle wheel 200.Hub reduction gear 410 and second embodiment in the present embodiment
In the structure having the same of hub reduction gear 310, details are not described herein.
Since semitrailer is not necessarily to consider the low-floor requirement of car vehicle, thus by the motor shaft of drive motor units 20 21 with
Semiaxis 30 is coaxially disposed, and then drive motor units 20 and the position of the brake on vehicle wheel side can be made mutually to be independent of each other.
In addition, complete to slow down only with hub reduction gear 410, therefore 400 structure of electric drive axle is simple, and then increases liftoff
Gap so that the electric drive axle 400 of the utility model is not only able to achieve drive motor units 20 and a wheel is operated alone, and is applicable in
In semitrailer.
As shown in Figure 10, in specific some embodiments, semiaxis 30 is coupled with motor shaft 21 using spline, in other implementations
In mode, it can also be attached using other key connections or using shaft coupling, this is not restricted.
Referring to Figure 10, in the present embodiment, electric drive axle 400 further includes brake 50 and suspension frame structure 60, system
Dynamic device 50 is set to 200 inside of hub for vehicle wheel, and suspension frame structure 60 is installed on axle case assy 10, and is set to brake 50 and is driven
Between dynamic electric motor units 20.Since the semiaxis 30 of motor shaft 21 is coaxially disposed, make drive motor units 20 and vehicle wheel side
In the case that the position of brake 50 is mutually independent of each other, also placement space can be left for suspension frame structure 60.Conventional wheel side electricity drives
Dynamic bridge, because position is limited, vehicle can only be using structure is complicated, the air of C-type beam at high cost and not being suitable for semitrailer
Spring suspension.The electric drive axle 400 of the utility model, sufficient placement space can make 400 use of electric drive axle normal in the market
All kinds of suspended structures increase cost without adaptively being redesigned to suspended structure again.
Specific in some embodiments, as shown in Figure 10, suspension frame structure 50 can be Leaf Spring Suspension, or in other tools
In body embodiment, as shown in figure 12, suspension frame structure 50 is to be oriented to arm-type air suspension, is oriented to arm-type air suspension and leaf spring
Suspension advantage equally having the same, details are not described herein.
Based on above-mentioned electric drive axle (100,300,400), the utility model also provides a kind of vehicle, which includes car body
And it is connected to the above-mentioned electric drive axle (100,300,400) of car body.
Above-mentioned vehicle, by the way that the electric drive axle (100,300,400) of the utility model is arranged, so that drive motor units 20
It is mutually independent of each other with the position of the brake on vehicle wheel side, and the volume of speed reducer assembly is made to become smaller, and then increase liftoff
Gap, and electric drive axle (100,300,400) is able to achieve the wheel for making drive motor units 20 that vehicle be operated alone.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (12)
1. a kind of electric drive axle, which is characterized in that including axle case assy, drive motor units and two electric drive axle units, drive
Dynamic electric motor units include two motor shafts, and two electric drive axle units are installed in the opposite sides of the axle case assy, and two
A motor shaft is connect with two electric drive axle units respectively；
The electric drive axle unit includes:
Semiaxis is coaxially disposed with the motor shaft；And
Speed reducer assembly, including retarder, the motor shaft are connect with the input terminal of the retarder, and the semiaxis is located at described
Side of the retarder far from the drive motor units, one end of the semiaxis is connect with the output end of the retarder, described
The other end of semiaxis is connect with hub for vehicle wheel.
2. electric drive axle according to claim 1, which is characterized in that the speed reducer assembly further includes hub reduction gear,
The semiaxis between the retarder and the hub reduction gear, and the both ends of the semiaxis respectively with the retarder
The connection of the input terminal of output end and the hub reduction gear, the output end of the hub reduction gear are connect with the hub for vehicle wheel.
3. electric drive axle according to claim 1 or 2, which is characterized in that the drive motor units include that birotor drives
Dynamic motor, the birotor driving motor includes internal rotor, around the outer rotor of the internal rotor and two motor shafts；
The internal rotor is fixedly connected and is coaxially disposed with wherein one motor shaft, the outer rotor and wherein another electricity
Arbor is fixedly connected and is coaxially disposed.
4. electric drive axle according to claim 1 or 2, which is characterized in that the electric drive axle further includes brake and hangs
Frame structure, the brake are set on the inside of the hub for vehicle wheel, and the suspension frame structure is installed on the axle case assy, and is set
It is placed between the brake and the retarder.
5. electric drive axle according to claim 4, which is characterized in that the suspension frame structure is Leaf Spring Suspension or guiding
Arm-type air suspension.
6. electric drive axle according to claim 1 or 2, which is characterized in that the retarder is planetary reducer, packet
Include the first speed reducer housing, the first ring gear, the first planetary gear, first planet carrier and the first sun gear, first retarder
Shell is fixed on the axle case assy, and first ring gear is fixed on first speed reducer housing, first sun
Wheel is engaged with the planetary gear, and first planetary gear is engaged with first ring gear, and first sun gear is described subtracts
The input terminal of fast device, the first planet carrier are the output end of the retarder.
7. electric drive axle according to claim 2, which is characterized in that the hub reduction gear is planetary reducer,
Including the second speed reducer housing, the second ring gear, the second planetary gear, the second planet carrier and the second sun gear, the electric drive axle
It further include axle tube, the axle tube is fixedly connected with the axle case assy, and second ring gear is fixed on described half
Pipe spreader, the semiaxis pass through the axle tube and connect with second sun gear, second sun gear and described second
Planetary gear engagement, second planetary gear are engaged with second ring gear, second planet carrier and second retarder
Cage connection, second speed reducer housing are fixed on the hub for vehicle wheel, and second sun gear is the hub reduction gear
Input terminal, second planet carrier be the hub reduction gear output end.
8. a kind of electric drive axle, which is characterized in that including axle case assy, drive motor units and two electric drive axle units, institute
Stating drive motor units includes two motor shafts, and two electric drive axle units are installed in opposite the two of the axle case assy
Side, two motor shafts are connect with two electric drive axle units respectively；
The electric drive axle unit includes:
Semiaxis, one end of the semiaxis and the motor axis connection, the semiaxis and the motor shaft are coaxially disposed；And
Hub reduction gear, the semiaxis is between the driving motor and the hub reduction gear, and the semiaxis is another
End is connect with the input terminal of the hub reduction gear, and the output end of the hub reduction gear is connect with hub for vehicle wheel.
9. electric drive axle according to claim 8, which is characterized in that the drive motor units include birotor driving electricity
Machine, the birotor driving motor include internal rotor, around the outer rotor of the internal rotor and two motor shafts；
The internal rotor is fixedly connected and is coaxially disposed with wherein one motor shaft, the outer rotor and wherein another electricity
Arbor is fixedly connected and is coaxially disposed.
10. electric drive axle according to claim 8, which is characterized in that the electric drive axle further includes brake and suspension
Structure, the brake are set on the inside of the hub for vehicle wheel, and the suspension frame structure is installed on the axle case assy, and are arranged
Between the brake and the driving motor.
11. electric drive axle according to claim 10, which is characterized in that the suspension frame structure is Leaf Spring Suspension or leads
To arm-type air suspension.
12. a kind of vehicle, which is characterized in that including car body and be connected to the car body such as any one of claim 1~11 institute
The electric drive axle stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821154461.4U CN208914949U (en) | 2018-07-20 | 2018-07-20 | Electric drive axle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821154461.4U CN208914949U (en) | 2018-07-20 | 2018-07-20 | Electric drive axle and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN208914949U true CN208914949U (en) | 2019-05-31 |
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ID=66694335
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821154461.4U Active CN208914949U (en) | 2018-07-20 | 2018-07-20 | Electric drive axle and vehicle |
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| CN (1) | CN208914949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110733324A (en) * | 2018-07-20 | 2020-01-31 | 长沙智能驾驶研究院有限公司 | Electric drive axle and vehicle |
| CN114701301A (en) * | 2022-06-08 | 2022-07-05 | 临工集团济南重机有限公司 | Electrically-driven axle and vehicle |
-
2018
- 2018-07-20 CN CN201821154461.4U patent/CN208914949U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110733324A (en) * | 2018-07-20 | 2020-01-31 | 长沙智能驾驶研究院有限公司 | Electric drive axle and vehicle |
| CN114701301A (en) * | 2022-06-08 | 2022-07-05 | 临工集团济南重机有限公司 | Electrically-driven axle and vehicle |
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