CN108128142A - A kind of wheel hub rim structure, Electric Motor Wheel and vehicle for Electric Motor Wheel - Google Patents

Abstract

The present invention proposes a kind of wheel hub rim structure, Electric Motor Wheel and vehicle for Electric Motor Wheel, and Electric Motor Wheel includes wheel hub motor, planetary reduction gear, hub unit and wheel rim；Wheel hub rim structure uniformly distributed two groups of alternate bolts on rim shoulder circumference, it is respectively used to the wheel rim connection of Electric Motor Wheel and the connection of the wheel rim, planet carrier for planetary reduction gear, wheel hub of Electric Motor Wheel, realize the integrated installation of Electric Motor Wheel motor power, the reliable delivery of mechanical braking force and wheel rim load and large velocity ratio planetary reduction gear, wheel hub and wheel rim.It is compact-sized, it is easy to maintenance, it is suitble to the heavy vehicle application using In-wheel-motor driving.

Description

A kind of wheel hub rim structure, Electric Motor Wheel and vehicle for Electric Motor Wheel

Technical field

The invention belongs to electric vehicle electric drive technology field, more particularly to a kind of Electric Motor Wheel of integrated wheel hub motor Wheel hub rim structure and with its vehicle.

Background technology

Electric Motor Wheel technology is also referred to as wheel inner electric machine technology, which is also referred to as wheel hub motor, and maximum feature is exactly will Power plant, transmission device and brake apparatus are all integrated in wheel hub, are able to the mechanical part of electric vehicle is greatly simple Change, compared to other drive forms, have the advantage in the majority such as short transmission chain, transmission efficiency, flexible arrangement.Using Electric Motor Wheel technology Clear superiority of the electric vehicle in terms of the property such as vehicle general arrangement, power sex expression and control make it by academia and industry The common concern on boundary.

For electric vehicle, especially large-tonnage, vehicle carrying, power demand and wheel hub axial direction and radial space have sternly Lattice limit, and outer rotor hub motor torque capacity is limited, and weight, which causes greatly unsprung mass to increase, influences high vehicle speeds performance, Pulling figure needed for vehicle can not be met using existing outer rotor hub motor, so selecting high speed inner rotor motor, and in vehicle The wheel hub motor scheme of installation large velocity ratio retarder is more suitable between wheel and motor.Patent CN103328247A proposes a kind of wheel Hub motor driver, but it is all bigger without deceleration mechanism and the device axial dimension and volume clearly used.To realize Large speed ratio retarder, prior art generally use multistage planet braking technique scheme, axial dimension shared by retarder is big, wheel hub Brake difficult arrangement, and arrange brake from motor shaft end, it is desirable that brake rotating speed height leads to service life reduction.

In order to overcome the shortcomings of the aforementioned prior art and scheme, propose that a kind of integrated level is high, dynamic characteristics is good, reliability is high Integrated form internal rotor wheel hub motor Electric Motor Wheel scheme.

However at present, wheel rim installation one group of bolted mode of generally use, and wheel rim mounting flange face and median plane It is distant.Existing wheel hub rim structure has the following problems：

1, only with one group of bolt, cause wheel rim attachment force insufficient or cause number of bolts to strengthen attachment force Increase, be not easy to dismount.

2nd, the stress point of wheel rim and supporting point are remote, and the arm of force is long, and stressing conditions are severe.

3rd, the situation of connection wheel hub, retarder flange is not fully taken into account, is not easy to install.

Invention content

In order to overcome the shortcomings of the prior art and scheme, the present invention provides a kind of wheel hub wheel rim connections for Electric Motor Wheel Structure.In the present solution, completing positioning and fastening under the wheel rim non-bearing state of medial and lateral, group using one group of rim bolt connection Into complete wheel rim, reliable fastening is realized；And it connects the uniformly distributed one group of boss bolt in alternate position on same circumference in rim bolt and connects It connects, realizes the vehicle reliable delivery of planetary reduction gear motor power, mechanical braking force and landing load and interior foreign steamer when driving More than the bolt clipping forcee of rim is doubled compared with non-bearing state.Boss bolt need to be only released in re-type can be by inside and outside Wheel rim integrally removes；In vehicle, two kinds of bolt collective effects in interior wheel rim and outer rim, ensure that power drive mechanism can when driving By property and wheel rim servicing ease.

The present invention program is as follows：

A kind of wheel hub rim structure for Electric Motor Wheel, the Electric Motor Wheel include wheel hub motor, planetary reduction gear, wheel hub group Part and wheel rim；The input of the planetary reduction gear is sun gear, is exported as planet carrier；The hub unit includes wheel hub；It is described Wheel rim includes interior wheel rim and outer rim；The interior wheel rim has the flange shape interior wheel rim mounting flange towards wheel center；Institute Outer rim is stated with the flange shape outer rim mounting flange towards wheel center；It is set successively on the inside of the interior wheel rim mounting flange Put the connecting end surface of planet carrier mounting flange and wheel hub；Two groups are evenly distributed on the inside and outside same circumference of wheel rim mounting flange each other Alternate rim bolt and boss bolt；Wheel rim and outer rim wherein in rim bolt connection；Boss bolt connection in wheel rim and The connecting end surface of outer rim, planet carrier mounting flange and wheel hub.

Preferably, set rim bolt that flaring, planet carrier mounting flange and wheel hub are installed inside, on outer rim mounting flange Connecting end surface setting rim bolt arrange flaring, rim bolt installation flaring position installation rim bolt, the spiral shell of rim bolt Bolt head or its clamp nut are contained in the space that rim bolt arrangement flaring is formed.

Preferably, it is evenly distributed with two groups of phases each other inside, on the circumference identical with above-mentioned circumferential size of outer rim mounting flange Between rim bolt installation flaring and boss bolt mounting hole.

Preferably, the connecting end surface of planet carrier mounting flange and wheel hub has on the circumference identical with above-mentioned circumferential size Uniformly distributed boss bolt counter sink and rim bolt arrangement flaring, the hub bolt counter sink and bolt arrangement flaring interval cloth It puts.

Preferably, boss bolt passes through the boss bolt mounting hole and the boss bolt counter sink.

Preferably, the planetary reduction gear is located on the outside of the hub unit.

Preferably, the fastening rim bolt on the outside of the outer rim.

Tyre inflating door mounting hole is additionally provided on boss bolt and rim bolt distribution circle.

The invention further relates to the Electric Motor Wheels comprising above structure.

The invention further relates to the vehicles comprising above structure.

Description of the drawings

Fig. 1 is Electric Motor Wheel schematic diagram of the present invention

Fig. 2 is Electric Motor Wheel explosive view of the present invention

Fig. 3 is Electric Motor Wheel assembling schematic diagram of the present invention

Fig. 4 is Electric Motor Wheel sectional arrangement drawing of the present invention

Fig. 5 is Electric Motor Wheel sectional arrangement drawing of the present invention

Fig. 6 is the assembling schematic diagram of integral steering section end cap of the present invention

Fig. 7 is integral steering section end cap finite Element Stress of the present invention and strain figure

Fig. 8 is each power transfer route schematic diagram of Electric Motor Wheel of the present invention

Wherein 8 (a) In-wheel motor driving power or electric braking force drive path；8 (b) hub brake power transmission line；8 (c) Electric Motor Wheel bearing capacity or ground face wheel rim active force transfer route

Fig. 9 is wheel hub rim structure sectional view of the present invention

Figure 10 is wheel hub rim structure explosive view of the present invention

Figure 11 is wheel hub structure schematic diagram of the present invention

In figure：

1- wheel rims, 101- outer rims, wheel rim in 102-, the installation flaring of 103- rim bolts, 104- boss bolt installing ports, 105- tyre valve core location holes,

2- planetary reduction gears, 3- wheel hubs, 4- hub brakes, 41- brake discs,

5- motor axle body end cap flanges, 51- motor axle body end cover connecting bolts,

6- wheel hub motors, 61- hub motor shells, 62- terminal boxes, 63- rim brakes,

7- knuckle end caps, the upper knuckles of 71-, knuckle under 72-, 8- suspension swing arms,

9- hub bearings, 10- wheel hub motor armature spindles,

21- sun gears, 22- planet carriers, 23- gear rings, 12- gear ring fixed frames,

Cylindrical portion in 13-, 14- outer cylinder parts, 15- steering arms.

Specific embodiment

No special explanation, in the present invention interior lateral direction relative to vehicle generally, whether vehicle left side or the right side Side Electric Motor Wheel, it is inside all to refer to along axis direction is taken turns close to vehicle center side, is outside far from vehicle center side.

The Electric Motor Wheel of the present invention can be applied to the various vehicles of motor-driven, and auxiliary power is given applied to electronic Situation, such as the four-wheeled vehicle of fuel cell car or electric vehicle.Be particularly suitable for big torque, heavy load electric vehicle .But the present invention is not limited to two-wheeled vehicle, three-wheel or carriage that golf course vehicle or aged or disabled use, Medium or severe type load-carrying commercial vehicle and endless-track vehicle in construction site or carrier etc..

This Electric Motor Wheel scheme shown in Fig. 1-5 is made of wheel hub motor 6, planetary reduction gear 2, hub unit and wheel rim 1.

Vehicle tyre is installed on wheel rim 1.

The planetary reduction gear 2 is located on the outside of the hub unit；6 outside of wheel hub motor passes through motor axle body end cap Flange 5 connects the hub unit；The 6 inside connection knuckle end cap 7 of wheel hub motor；The knuckle end cap 7 connects vehicle The suspension swing arm 8 of suspension.

The planetary reduction gear 2 includes sun gear 21, planet carrier 22 and gear ring 23 and gear ring fixed frame 12, the planet The input of retarder 2 is sun gear 21, is exported as planet carrier 22；Planetary reduction gear 2 be connected to rotor axis of electric 10 and wheel rim 1 it Between；Planetary reduction gear 2 is slowed down using level-one large velocity ratio, realizes torque and rotating speed matching between high-speed electric expreess locomotive and low speed wheel rim 1, too Sun wheel 21 is connect with wheel hub motor armature spindle 10, and planet carrier 22 is bolted to connection with wheel rim 1.Outside gear ring fixed frame 12 End is fixedly connected with gear ring 23, and 12 inner end of gear ring fixed frame is fixed with interior cylindrical portion 13, interior cylindrical portion 13 and motor axle body end cap Flange 5 is fixedly connected, it is seen that gear ring 23 is fixed on by gear ring fixed frame 12 on motor axle body end cap flange 5, realizes itself and electricity Machine shell 61 is relatively fixed connection, realizes the positioning of 23 axial and circumferential of gear ring.The gear of gear ring 23 by engaged with planetary gear One gear and the second gear composition engaged with gear ring fixed frame outer end.Sun gear 21, planetary gear in planetary reduction gear 2 and Gear ring 23 uses helical gear, and planetary gear is positioned by engage realization automatic axial with the gear of gear ring 23, sun gear and is in one Kind axial floating state, to ensure the good meshing state of reduction planetary retarder and bearing capacity.

6 electromagnetic torque of wheel hub motor imparts power to wheel rim 1 after 2 deceleration torque of planetary reduction gear, realizes driving Or electric braking wheel.Power direction of transfer is inputted for sun gear 21 during driving, and planet carrier 22 exports；Power transmission side during electric braking It is inputted to for planet carrier 22, sun gear 21 exports.

The rotor axis of electric 10 is wheel hub motor output shaft, the rotor axis of electric 10 and the planetary reduction gear 2 Sun gear 21 passes through half axis connection；The semiaxis by the spline at both ends respectively with the internal splined hole gear and motor of sun gear Armature spindle 10 connects.

The wheel hub 3 is fixedly connected with planet carrier 22, the wheel rim 1 of planetary reduction gear 2.

More optimize, Electric Motor Wheel further includes hub brake 4, and the hub brake 4 is located at the motor axle body end cap Flange 5, the wheel hub 3 and the wheel rim 1 are surrounded in space.The housing of hub brake 4 is connected to wheel hub motor axle body end cap Flange, the brake disc 41 of hub brake 4 are fixedly connected with wheel hub 3.Hub brake uses big torque slow-speed of revolution brake, excellent Pneumatic complete disc brake is selected as, the connection mode that the brake disc 41 of brake is fixedly connected on wheel hub 3 is preferably cylindrical type Pin, brake disc 41 can move axially on cylindrical type pin.

More optimize, the brake disc 41 of the wheel hub 3 and planet carrier 22, wheel rim 1 and hub brake 4, which is fixed, to be connected It connects, it is preferable that wheel hub 3 is connect with planet carrier 22, wheel rim 1 and hub brake 4 in same position by same a connection piece.

Hub brake 4 is made of brake casing, brake disc 41, friction plate, the secondary actuating mechanism of braking；Wherein brake Housing is fixedly connected by one group of bolt with motor axle body end cap flange 5, is fixing piece, is not rotated；Brake disc 41 is logical It crosses cylindrical type pin or spline to connect with wheel hub 3, is revolving part；Friction plate is supported on by spline or sliding rail in detent housing； There are piston and oil pocket or gas chamber and return mechanism such as return spring in hub brake actuating mechanism, when high pressure liquid pressure oil or gas Body flows through oil pocket or gas chamber, acts on piston and generates axial thrust so that friction plate is compressed with brake disc 41, and generation rubs Torque is wiped, wheel hub 3 is hindered to rotate, wheel rim 1 is completed and brakes function.

Hub unit is connected between wheel rim 1 and motor axle body end cap flange 5, and hub unit includes wheel hub 3, interior cylindrical portion 13rd, outer cylinder part 14 and hub bearing 9.Interior cylindrical portion 13 is fixedly connected with motor axle body end cap flange 5, interior cylindrical portion 13 and electricity Arbor body end cap flange 5 can be split component or be integrally formed component.

The jackshaft is located in interior cylindrical portion 13, and sun gear passes through the jackshaft that is located in interior cylindrical portion 13 and electricity Machine rotor axis connection；Interior cylindrical portion 13 is located in outer cylinder part 14；Outer cylinder part 14 is fixedly connected with wheel hub 3, outer cylinder part 14 It can be split component with wheel hub 3 or be integrally formed component.The outer cylinder part 14 is relative to the interior cylindrical portion 13 It is rotatably coupled, hub bearing 9 is arranged between the interior cylindrical portion 13 and the outer cylinder part 14, hub bearing 9 uses water Two taper roll bearings that plain cloth is put, 1 center line of wheel rim are fallen between two taper roll bearings, for there is other application will It asks, other bearings also can be selected.Interior cylindrical portion 13 also supports 2 gear ring fixed frame 12 of planetary reduction gear.

The hub unit is connect by the motor axle body end cap flange 5 with the hub motor shell 61.

The wheel hub motor 6 of this programme is located at knuckle end cap 7, motor axle body end cap flange 5 is wrapped with hub motor shell 61 Enclose the space to be formed.Wheel hub motor 6 is internal rotor high-speed electric expreess locomotive, based on electromagnetic principles, when motor stator winding has design Electric current by when, rotor and stator by electromagnetic action generate expected from electromagnetic torque, the rotation of driving motor rotor drives Wheel hub motor armature spindle rotation output power.Wheel hub motor 6 includes motor stator, rotor, 61/ motor of hub motor shell Water jacket, wheel hub motor armature spindle 10, motor axle body end cap flange 5 and motor steering section end cap 7, what 6 rotor of wheel hub motor generated Electromagnetic torque passes to the sun gear 21 of planetary reduction gear 2 by wheel hub motor armature spindle 10；Motor axle body end cap flange 5 is logical It crosses two opposed hub bearings 9, interior cylindrical portion 13 and outer cylinder part 14 to be supported on wheel hub 3, and passes through interior cylindrical portion 13 Support 2 gear ring fixed frame 12 of planetary reduction gear.Motor housing 61 be located at motor axle body end cap flange 5 and motor steering section end cap 7 it Between, motor axle body end cap flange 5 and motor steering section end cap 7 are fixedly connected respectively with hub motor shell 61, the motor housing 61 integrated motor cooling water channels, in this case motor housing be also referred to as motor water jacket.

Motor steering section end cap 7 connects vehicle suspension, and as shown in 6, integration is integrated with electric motor end cap, upper steering Section, lower knuckle and wheel steering arm installation interface.Upper knuckle and lower knuckle are distributed in electric motor end cap edge, wherein suspension Pumping arm action connects upper and lower knuckle, so as to fulfill the connection of motor and suspension swing arm, the pin hole of upper knuckle and lower knuckle Point-blank, knuckle can rotate center line around the straight line, which keeps certain with Electric Motor Wheel vertical direction and tilt Angle.Upper knuckle is connect by ball pin with suspension upper swing arm；Lower knuckle is connect by ball pin with suspension lower swing arm and steering arm.

There is connection box for motor 62 in the end face of motor steering section end cap 7, while in order to reduce motor axial length and motor Axle body side space limits, and the outlet of motor end terminal box 62 is along motor axial direction from the electronic wheel end outlet, specifically Outlet is along motor axial direction from the 7 end outlet of motor steering section end cap.

It needs to install the situation of multiple brakes for brake force deficiency, has also reserved rim brake 63 and interface is installed. Since 6 end center of wheel hub motor connects rim brake 63, terminal box 62 is mounted on 63 radial outside of rim brake Close to 7 edge of motor steering section end cap.

Load of the ground effects on Electric Motor Wheel wheel rim 1 is transmitted to motor side by hub motor shell 61 or motor water jacket Lid, then corresponding suspension swing arm is transmitted to by the upper knuckle at electric motor end cap edge and lower knuckle, electric motor end cap as shown in Figure 7 The thickness of edge circumferencial direction thickness ratio thick middle, upper knuckle and lower knuckle is gradually thinning along motor axial direction, and by It is bigger than the carrying of upper knuckle in lower knuckle, and attached steering arm torque, the following knuckle of institute and electric motor end cap transition position material are thick Degree is thicker than upper knuckle and electric motor end cap transition position material；Upper knuckle pin hole upper surface connection suspension upper swing arm ball pin, lower turn To section pin hole upper surface connection suspension lower swing arm ball pin, lower surface connection steering arm, the upper and lower swing arm ball pin of suspension is turning above and below It can rotate and move up and down in the horizontal direction into section, electric motor end cap shape is herein in connection with vehicle wheel steering and suspension beating scope It determines, ensures to eliminate movement interference.

The present invention realizes motor power, wheel hub system by above-mentioned power transfer mode in vehicle traction, braking and steering Dynamic device power, steering power, vehicle vertical load and ground are rationally transmitted in face of the active force of wheel rim.

With reference to vehicle driving-cycle, using finite element analysis means, each part of the force of motor steering end cap of the present invention is tied Structure strength and stiffness are verified, as shown in Figure 7；Analysis method is fixed in upper and lower knuckle, chooses 2 kinds of the most severe works Condition is vehicle ground shock loading respectively, and lateral peak acceleration 0.65g when taking 3 times of static loads and Vehicular turn passes through wheel Hub motor housing/motor water jacket is acted on motor steering section end cap 7, can from 7 stress and strain figure of motor steering section end cap To find out, stress and strain distribution is relatively reasonable, which meets bearing requirements in structure.

The planet carrier 22, gear ring fixed frame 12, interior cylindrical portion 13, motor axle body end cap flange 5, motor housing of this programme 61st, be fixedly connected between motor steering section end cap 7 and suspension swing arm 8, planet carrier 22, gear ring fixed frame 12, interior cylindrical portion, Motor axle body end cap flange 5, motor housing 61 and motor steering section end cap 7 with suspension swing arm 8 due to connecting without sending out The raw rotary motion along axletree.

During vehicle traction, according to selected integrated vehicle control tactics, vehicle charges to 6 stator winding of wheel hub motor, with rotor Make in generate electromagnetic torque, planetary reduction gear 2, sun gear 21 are imparted power to by wheel hub motor armature spindle 10, through planet Wheel hub 3 and wheel rim 1 are imparted power to by planet carrier 22 after 2 deceleration torque of retarder, drive wheel.

First, In-wheel motor driving power transmission path, it is as follows：

See Fig. 8 (a), the driving force acted on wheel rim 1 is generated by wheel hub motor 6, the power that rotor axis of electric 10 exports It is connected on the sun gear 21 of planetary reduction gear 2 by semiaxis, by the deceleration torque of planetary reduction gear 2, is passed by planet carrier 22 It is handed to wheel rim 1 and is ultimately applied to wheel, realize the rotation of wheel-hub motor driven vehicle wheel.

2nd, brake force transmission path, it is as follows：

For electric vehicle, the brake force acted on wheel rim 1 is provided jointly by hub brake 4 and wheel hub motor 6, Middle hub brake 4 generates mechanical braking force, and wheel hub motor 6 generates electric braking force.Wheel rim 1 is made when electro-motive vehicle is run at high speed Power is mainly provided by electric braking force, is provided during low vehicle speeds, passed through jointly by both electric braking force and mechanical braking force The intervention time and intensity of control hub brake 4 and wheel hub motor 6 realize that mechanical braking force and electric braking force rationally efficiently divide Match, the electric energy that maximum recycling electric braking generates under the premise of vehicle brake safe is ensured.

When vehicle is braked, according to selected integrated vehicle control tactics, when Vehicle Speed is higher than a certain speed and braking Pedal action meets certain condition, generates electric braking torque by wheel hub motor 6 first, passes through semiaxis, 2 sun gear of planetary reduction gear 21st, gear ring finally acts on wheel rim to wheel hub 3, plays the function of braking wheel rim 1；When a certain vehicle of Vehicle Speed low pressure Speed and brake pedal action meet certain condition, and hub brake 4 and wheel hub motor 6 are all devoted oneself to work, 3 machinery power of wheel hub By the motor electric braking force collective effect wheel rim 1 passed on wheel hub 3 and wheel hub 3, the electromechanical combination system of wheel rim 1 is completed It is dynamic；When car speed meets certain condition, electric braking force revocation, only by wheel hub system less than a certain speed or brake pedal action Dynamic device 4 generates Braking and wheel rim 1, completes the braking of vehicle；

Mechanical braking force transmission path is shown in 8 (b)：The brake disc 41 of hub brake 4 is fixedly connected with wheel hub 3, wheel hub system The housing of dynamic device 4 is connected to motor axle body end cap flange 5, realizes the generation mechanical braking force of hub brake 4 and is applied directly to On wheel hub 3 and pass to wheel；

Electric braking force transmission path is shown in Fig. 8 (a)：It is identical with driving force transmission path, and wheel hub motor 6 generates electric braking force Wheel rim 1 is transferred to by rotor axis of electric 10, semiaxis, sun gear 21, planet carrier 22 successively, is ultimately applied to wheel.

3rd, vehicle vertical load, Electric Motor Wheel bearing capacity transmission path see Fig. 8 (c), it is as follows：

Vehicle is applied to the power of suspension, successively by suspension swing arm, motor steering section end cap 7, hub motor shell 61, electricity Arbor body end cap flange 5 is transferred to interior cylindrical portion 13 and outer cylinder part 14 is shunted, then converges to wheel hub 3, is finally transmitted to Wheel rim 1 realizes that the bearing capacity of Electric Motor Wheel transmits with this.

Since bearing capacity is shunted near axle by interior cylindrical portion 13 and outer cylinder part 14, interior cylindrical portion 13 is reduced With the bearing load of outer cylinder part 14, transmission parts reliability is improved, since interior cylindrical portion 13 and outer cylinder part 14 are held jointly Above-mentioned vehicle vertical load is carried, realizes that this programme is suitable for heavy-duty electric vehicles.

4th, ground effects join Fig. 8 (c) in the power transmission path of wheel rim 1, as follows：

Ground effects are transferred to interior cylindrical portion 13 via wheel hub 3 and outer cylinder part 14 are shunted in the power of wheel rim 1, then Motor axle body end cap flange 5 is converged to, is transferred to successively through hub motor shell 61 and motor steering section end cap 7, suspension swing arm Suspension.

Since power of the ground effects in wheel rim 1 is disperseed by interior cylindrical portion 13 and outer cylinder part 14, interior tubular is reduced Portion 13 and the bearing load of outer cylinder part 14, improve transmission parts reliability, since interior cylindrical portion 13 and outer cylinder part 14 are common With above-mentioned ground effects are carried in the power of wheel rim 1, realize that this programme is suitable for heavy-duty electric vehicles.

The present invention vehicle traction, braking and turn to when realize motor power, hub brake power, steering power, Vehicle vertical load and ground are rationally transmitted in face of the active force of wheel rim；And on the basis of Electric Motor Wheel power is rationally transmitted, employ one Grade large velocity ratio planetary reduction gear technology, complete-disc wheel hub braking technology, greatly reduce component axial dimension, improve transmission parts Reliability reduces Electric Motor Wheel weight, transmission efficiency is improved, particularly suitable for heavy-duty electric vehicles.

In another embodiment of the present invention, wheel rim connection structure of the invention is as follows：

Such as Fig. 9-11, wheel rim includes outer rim 101 and interior wheel rim 102.Interior wheel rim has towards the flange shape of wheel center Interior wheel rim mounting flange, the outer rim have towards wheel center flange shape outer rim mounting flange.

Outer rim 101, interior wheel rim 102 same circumference on uniformly distributed two groups alternate bolts hole each other, be wheel rim respectively Bolt installation flaring 103 and boss bolt mounting hole 104.

The connecting end surface of planet carrier mounting flange and wheel hub is set gradually on the inside of the interior wheel rim mounting flange；Planet carrier is pacified Fill on the circumference of the same radius of the connecting end surface of flange and wheel hub uniformly distributed two groups each other alternate rim bolt arrangement flaring and Boss bolt counter sink.

Wherein rim bolt connects inside and outside wheel rim；Boss bolt connects inside and outside wheel rim, planet carrier mounting flange and wheel hub Connecting end surface.Specifically, the axial direction where the center that the center of rim bolt installation flaring 103 and rim bolt arrangement are flared It is identical with radial position；Rim bolt installation flaring position installation rim bolt, the bolt head of rim bolt or its clamp nut It is contained in the space that rim bolt arrangement flaring is formed, realizes being fastenedly connected for outer rim 101 and interior wheel rim 102.Wheel hub spiral shell Bolt passes through boss bolt mounting hole 104 and boss bolt counter sink, realizes outer rim 101, interior wheel rim 102, planet carrier Method for Installation Blue and wheel hub connecting end surface is fastenedly connected, and then fastens wheel rim, planet carrier for planetary reduction gear and wheel hub.

Wherein wheel hub motor power is by wheel hub motor armature spindle 10, via semiaxis, until after 2 deceleration torque of planetary reduction gear Boss bolt junction is transmitted to by planet carrier 22, is transferred to wheel hub 3；Brake force is transmitted to by mechanical braking force by wheel hub 3 Boss bolt junction is transferred to wheel hub 3, and ground is acted on by boss bolt on wheel hub 3 in face of the load of wheel rim, through interior tubular Portion 13, outer cylinder part 14 and hub bearing 9 are supported in motor axle body end flange 5.

For the ease of tyre inflating, tyre valve core mounting hole is additionally provided on boss bolt and rim bolt distribution circle Position 105, tyre valve core is installed across the hole.

The advantageous effect of the embodiment is：By the design of two groups of bolts, the fastening of inside and outside wheel rim was both completed, also might be used By being fixedly connected with carrier flange and wheel hub；Boss bolt need to be only released in re-type wheel rim can be removed, and realized Wheel rim servicing ease；In vehicle, two kinds of bolt collective effects in interior wheel rim and outer rim, ensure that power drive mechanism when driving Reliability.

The wheel rim connection scheme solves wheel rim, wheel hub and planet carrier attachment force deficiency or wheel rim is not easy to asking for dismounting Topic, it is compact-sized, it is easy to maintenance, it is suitble to the heavy vehicle application using In-wheel-motor driving.

Claims (10)

1. a kind of wheel hub rim structure for Electric Motor Wheel,

The Electric Motor Wheel includes wheel hub motor, planetary reduction gear, hub unit and wheel rim；

The input of the planetary reduction gear is sun gear, is exported as planet carrier；

The hub unit includes wheel hub；

The wheel rim includes interior wheel rim and outer rim；The interior wheel rim has the flange shape interior wheel rim installation towards wheel center Flange；The outer rim has the flange shape outer rim mounting flange towards wheel center；

It is characterized in that：

The connecting end surface of planet carrier mounting flange and wheel hub is set gradually on the inside of the interior wheel rim mounting flange；

Uniformly distributed two groups alternate rim bolts and boss bolt each other on the inside and outside same circumference of wheel rim mounting flange；Wherein Wheel rim and outer rim in rim bolt connection；Wheel rim and outer rim, planet carrier mounting flange and wheel hub in boss bolt connection Connecting end surface.

2. structure as described in claim 1, it is characterised in that：Inside, rim bolt is set to install on outer rim mounting flange The connecting end surface setting rim bolt of flaring, planet carrier mounting flange and wheel hub arranges flaring, rim bolt installation flaring position Rim bolt is installed, the bolt head of rim bolt or its clamp nut are contained in the space that rim bolt arrangement flaring is formed.

3. structure as claimed in claim 2, it is characterised in that：Inside, outer rim mounting flange with above-mentioned circumferential size phase With circumference on uniformly distributed two groups alternate rim bolt installation flaring and boss bolt mounting holes each other.

4. the connecting end surface of structure as claimed in claim 3, planet carrier mounting flange and wheel hub have with above-mentioned circumference ruler Uniformly distributed boss bolt counter sink and rim bolt arrangement flaring, the hub bolt counter sink and bolt cloth on very little identical circumference Put flaring arranged for interval.

5. structure as claimed in claim 4, boss bolt passes through the boss bolt mounting hole and the boss bolt countersunk head Hole.

6. such as structure described in any one of claim 1 to 5, it is characterised in that：The planetary reduction gear is located at the wheel hub group On the outside of part.

7. such as structure described in any one of claim 1 to 5, it is characterised in that：Fastening rim bolt on the outside of from the outer rim.

8. such as claim 1 to 8 any one of them structure, it is characterised in that：On boss bolt and rim bolt distribution circle It is additionally provided with tyre inflating door mounting hole.

9. a kind of Electric Motor Wheel, it is characterised in that：Include such as claim 1-8 any one of them structure.

10. a kind of vehicle, it is characterised in that：Include such as claim 1-8 any one of them structure.