CN109538704A - Planet Traction Drive bearing type integration deceleration wheel hub - Google Patents
Planet Traction Drive bearing type integration deceleration wheel hub Download PDFInfo
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- CN109538704A CN109538704A CN201811408717.4A CN201811408717A CN109538704A CN 109538704 A CN109538704 A CN 109538704A CN 201811408717 A CN201811408717 A CN 201811408717A CN 109538704 A CN109538704 A CN 109538704A
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- Prior art keywords
- planet
- wheel hub
- retarder
- traction drive
- outer ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of planet Traction Drive bearing type integration deceleration wheel hubs, including hub body and planet Traction Drive bearing type speed reducer, the planet Traction Drive bearing type speed reducer includes that planet Traction Drive train is collectively formed in retarder transmission inner shaft, retarder outer ring, planet rolling body and planet carrier, the planet rolling body is cooperated by way of frictional drive with retarder transmission inner shaft and retarder outer ring, and the power output end of the planet Traction Drive train is sequentially connected in hub body；This invention simplifies the combination of hub reduction gear and hub bearing, hub bearing and planet are drawn into reducing transmission structure organic integration, integrates deceleration and bearing function, simple and compact for structure, size is small, processing cost is low.
Description
Technical field
The invention belongs to hub bearing technical field, in particular to a kind of planet Traction Drive bearing type integration ratio wheel
Hub.
Background technique
Hub bearing is the important spare part for motor vehicle or Electricmotor car wheel part, its main function is carrying vehicle
Body weight and accurate guidance is provided for the rotation of wheel hub, in existing electric wheel hub, to improve motor speed, to improve function
Rate density usually places retarder wherein.Such electric speed reducing wheel hub is usually by main shaft, hub shell, motor, planetary gear
Reducer structure and these components of clutch form, and are equipped with hub shell, existing Electric Motor Wheel by hub bearing on main shaft
In hub, the components such as retarder are usually placed in hub bearing side, however the shortcomings that existing above-mentioned electric wheel hub be volume compared with
Greatly, structure is not compact enough, and one of major reason is due to underusing the space inside hub bearing.
Therefore, in order to solve the above problem, need a kind of deceleration wheel hub speed changer being arranged in wheel hub inner ring, the wheel hub
Bearing makes full use of the space between bearing internal external circle, to effectively shorten the axial dimension of deceleration wheel hub, substantially increases wheel
The structural compactness of hub.
A kind of deceleration hub bearing is disclosed in patent CN106763523A, and planetary reducer is integrated in hub spindle
Inside is held, the power output end of retarder is connected with the inner ring of hub bearing or outer ring.The hub bearing of this kind of form is abundant
Using the space of Bearing inner, to effectively shorten axial dimension, the structural compactness of wheel hub is substantially increased；And hub spindle
It is complicated and diversified for holding the power born in motor racing, such as the radial force transmitted by vehicle body, the lateral force that when steering is subject to
The bending torque that even various road excitations generate；And the retarder in the deceleration hub bearing of this structure is as just transmitting
The component of rotary power can not bear excessive radial force and axial force, need to cooperate corresponding bearing and axially position
Device works together, and components are more, and structure is caused to become more sophisticated, while reliability reduces；Due to planetary gear pitch
Error will cause periodic shock, and causing it to be driven, fluctuation is stronger, and noise is big, meanwhile, planetary gear processing, assembly difficulty
It is larger, it is unfavorable for simplifying the structure of bearing retarder.
Summary of the invention
In view of this, the present invention provides a kind of planet Traction Drive bearing type integration deceleration wheel hub, optimizes its planet and lead
Draw drive mechanism, reduce hub bearing axial dimension, integrate deceleration and bearing function, assembly difficulty is low, smooth running, has
There is automatic antioverloading defencive function.
Planet Traction Drive bearing type integration deceleration wheel hub of the invention, including hub body and planet drawing transmission shaft
Type speed reducer is held, the planet Traction Drive bearing type speed reducer includes retarder transmission inner shaft, retarder outer ring, planet rolling
Planet Traction Drive train is collectively formed in body and planet carrier, and the planet rolling body is passed by way of frictional drive with retarder
Dynamic inner shaft and the cooperation of retarder outer ring, the power output end of the planet Traction Drive train are sequentially connected in hub body.
Further, the planet rolling is justified in vitro between the inner circle of retarder outer ring and planet rolling is justified and slows down in vitro
Device is driven between inner shaft outer circle and forms matching pair by annular protrusion and annular channel.
Further, the annular protrusion and annular channel are used to generate the positive pressure of frictional drive in an interference fit
Power.
Further, the planet carrier be positioned at planet rolling body axial ends two left part planet carriers being linked together and
Right part planet carrier, the planet rolling body and its wheel shaft are rotatably assorted and are mounted on two planet carriers；The wheel shaft outer circle and
It is provided at least one set of mutually matched ring raceway between rolling element inner circle, is provided with roller in the ring raceway.
Further, the annular protrusion be located at planet rolling in vitro justify on, the annular channel be located at retarder be driven in
In axis outer circle and in the inner circle of retarder outer ring.
Further, the hub body includes the wheel hub inner ring being rotatably assorted and wheel hub outer ring, the planet Traction Drive
Bearing type speed reducer is installed between the inside and outside circle of wheel hub.
Further, the planet carrier of the planet Traction Drive bearing type speed reducer is as its power output end, and and wheel hub
Inner ring or the transmission connection of wheel hub outer ring.
Further, the retarder outer ring is fixedly connected with wheel hub outer ring；The planet carrier and the transmission of wheel hub inner ring cooperate.
Further, the retarder outer ring of the planet Traction Drive bearing type speed reducer is as its power output end, and with
Wheel hub inner ring or the transmission connection of wheel hub outer ring.
Further, the planet carrier is fixedly connected with wheel hub outer ring；The retarder outer ring and the transmission of wheel hub inner ring cooperate.
Beneficial effects of the present invention:
Planet Traction Drive bearing type speed reducer of the invention can carry out carrying and being to car body weight the rotation of wheel hub
Guidance is provided, at the same time, this planet drawing transmission shaft, which holds type speed reducer, to carry out deceleration increasing to the power for being input to wheel hub
Away from, and the space inside hub bearing is taken full advantage of, shorten the axial dimension of deceleration wheel hub, substantially increases wheel hub, especially
It is the structural compactness of electric wheel hub；This planet drawing transmission shaft is held type speed reducer and is rolled using retarder transmission inner shaft, planet
Normal pressure between kinetoplast, retarder outer ring contact surface carries out the radial support of input shaft, is driven inner shaft, planet using retarder
Frictional force between rolling element, retarder outer ring contact surface carries out passing movement and power, to realize that epicyclic friction gear is driven
With bearing function, this structure integrates deceleration and bearing function, reduces the ball between wheel hub inner ring, wheel hub outer ring, rolls
The structure in road and retainer reduces the components of hub bearing, simplifies its structure, compared to the row using gear transmission mode
For star draws retarder, the present invention also has the impact that structure is simple, reduces power transmitting, improves its radial load, branch
Holding smooth running and overloading to skid when ensure that the stability and reliability, transmission of transmitting makes it have overload protection function automatically
The advantages that；
This invention simplifies the combinations of hub reduction gear and hub bearing, and hub bearing and planet are drawn deceleration transmission knot
Structure organic integration integrates deceleration and bearing function, and simple and compact for structure, size is small, processing cost is low；
Annular protrusion and annular channel of the invention can improve transmission inner shaft and planet rolling body and planet rolling body with
The support situation of retarder outer ring, and the bending stiffness of planet Traction Drive bearing type speed reducer is improved, and increase contact and connect
It connects and improves driving torque and power；Between planet rolling body and retarder transmission inner shaft and retarder outer ring by annular protrusion and
Annular channel cooperates so that this deceleration wheel hub substantially increases axial carrying capacity, annular protrusion and ring when carrying axial load
Shape trench sidewalls mutually compress the contact area for increasing its frictional drive, it is ensured that the normal operation of retarder simultaneously increases transmission
Torque；This structure reduces the axial positioning structure to components such as retarder transmission inner shaft, planet carrier and planet rolling bodies, letter
The structure for having changed retarder reduces its axial dimension, make its it is compact-sized be easily installed, reduce and installation space wanted
It asks, increases Installation Flexibility；It is limited by the mutual structure of annular protrusion and annular channel, when planet rolling body both ends generate
When torque difference, the inclination deformation in planet rolling body axially direction can be effectively limited, effectively prevent the generation of vibration, reduction is made an uproar
Sound eliminates the phenomenon that gets stuck, and improves its and runs fluency；In axial same straight line size, this structure make planet rolling body with
Retarder is driven the contact area between inner shaft and retarder outer ring and increases, and improves the stress state of contact surface, reduces and answer
Power is concentrated, and transmission power and transmission efficiency are improved；
Left part planet carrier and right part planet carrier of the invention supports planet rolling body, improves the whole consistent of components
Property, in conjunction with the restriction effect of annular protrusion and annular channel, further limit planet rolling body run-off the straight deformation.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is that the present invention uses structural schematic diagram of the planet carrier as power output end；
For the present invention, using structural schematic diagram of the planet carrier as power output end is protected, (planet rolling body adds annular to Fig. 2
Protrusion)；
Fig. 3 is the structural schematic diagram that the present invention uses thin-wall metal cylinder；
Fig. 4 is the structural schematic diagram that the present invention uses thin-wall metal cylinder (planet rolling body adds annular protrusion)；
Fig. 5 is that the present invention uses structural schematic diagram of the retarder outer ring as power output end；
Fig. 6 be the present invention using retarder outer ring as the structural schematic diagram of power output end, (planet rolling body adds ring
Shape protrusion)；
Fig. 7 is annular protrusion and annular channel the first fit system structural schematic diagram；
Fig. 8 is second of fit system structural schematic diagram of annular protrusion and annular channel；
Fig. 9 is annular protrusion and annular channel the third fit system structural schematic diagram；
Specific embodiment
Fig. 1 is that the present invention uses structural schematic diagram of the planet carrier as power output end；Fig. 2 is that the present invention uses planet carrier
Structural schematic diagram as power output end (planet rolling body adds annular protrusion)；Fig. 3 is that the present invention uses thin-wall metal cylinder
Structural schematic diagram；Fig. 4 is the structural schematic diagram that the present invention uses thin-wall metal cylinder (planet rolling body adds annular protrusion)；Figure
5 use structural schematic diagram of the retarder outer ring as power output end for the present invention；Fig. 6 is that the present invention is made using retarder outer ring
For the structural schematic diagram of power output end (planet rolling body adds annular protrusion)；
It is as shown in the figure: the planet Traction Drive bearing type integration deceleration wheel hub of the present embodiment, including hub body and row
Star Traction Drive bearing type speed reducer, the planet Traction Drive bearing type speed reducer include retarder transmission inner shaft 3, retarder
Planet Traction Drive train is collectively formed in outer ring 4, planet rolling body 5 and planet carrier 6, and the planet rolling body 5 is passed by friction
Dynamic mode cooperates with retarder transmission inner shaft 3 and retarder outer ring 4, and the power output end of the planet Traction Drive train passes
It is dynamic to be connected to hub body；The retarder transmission inner shaft 3, retarder outer ring 4, planet rolling body 5 and the common shape of planet carrier 6
At planet traction deceleration train and correspond respectively to planet traction deceleration train in sun gear, outer ring, planetary gear and planet
Frame, the planet rolling body are cooperated by way of frictional drive with retarder transmission inner shaft and retarder outer ring；Retarder passes
Dynamic inner shaft 3 is not limited to traditional solid axle construction, and hollow tubular structure can also be used, when retarder transmission inner shaft 3 is tubular
When axle sleeve structure, in axle sleeve settable spline or using interference fit etc. modes and input shaft transmission cooperate, when retarder be driven
When inner shaft 3 is solid axle construction, it can be used using this solid shafting as input shaft, this structure is integrated with input shaft by inner ring,
Simplify the structure of planet Traction Drive bearing type speed reducer；Planet Traction Drive bearing type speed reducer can be by planet carrier or deceleration
Device outer ring, which is used as decelerating effect for the rotation of drive hub ontology as power output end, can also be driven retarder inner shaft work
It is used as accelerating function for the rotation of drive hub ontology for power output end, this planet drawing transmission shaft holds type speed reducer can be right
Car body weight carry and provides guidance for the rotation of wheel hub, and at the same time, this planet drawing transmission shaft holds type speed reducer also
Deceleration increment can be carried out to the power for being input to wheel hub, and take full advantage of the space inside hub bearing, shorten ratio wheel
The axial dimension of hub substantially increases the structural compactness of wheel hub, especially electric wheel hub；This planet drawing transmission shaft is held type and is subtracted
Fast device carries out the radial direction of axis using the normal pressure between retarder transmission inner shaft 3, planet rolling body 5,4 contact surface of retarder outer ring
Bearing carries out transmitting fortune using the frictional force between retarder transmission inner shaft 3, planet rolling body 5,4 contact surface of retarder outer ring
Dynamic and power, to realize epicyclic friction gear transmission and bearing function, this structure integrates deceleration and bearing function, reduces
The structure of ball, raceway and retainer between wheel hub inner ring, wheel hub outer ring reduces the components of hub bearing, simplifies
Its structure, for using the planet Traction Drive bearing type speed reducer of gear transmission mode, the present invention also has structure simple
Impact that is single, reducing power transmitting, improve its radial load, bearing smooth running ensure that the stability of transmitting and reliable
Property, transmission when overload can skid it is made to have many advantages, such as overload protection function automatically；
In the present embodiment, between 5 outer circle of planet rolling body and retarder outer ring inner circle and planet rolling is justified in vitro
Matching pair is formed by annular protrusion and annular channel between retarder transmission inner shaft outer circle；Two groups are provided in the present embodiment
One or more groups of, convex annular can also be arranged in annular protrusion 7 and annular channel 8, annular protrusion 7 and annular channel 8 in the axial direction
Rise 7 and annular channel 8 can improve retarder transmission inner shaft and planet rolling body and planet rolling body and retarder outer ring branch
Situation is supportted, and improves the bending stiffness of planet Traction Drive bearing type speed reducer, and increases contact connectio and improves driving torque
And power；Annular protrusion 7 may be provided in 5 outer circle of planet rolling body, and annular channel 7 may be provided at outside retarder transmission inner shaft 3
In round and 4 inner circle of retarder outer ring, the position of certain annular protrusion 7 and annular channel 8 can also be exchanged, i.e., annular protrusion 7 is set
It sets and is driven in 3 outer circle of inner shaft and 4 inner circle of retarder outer ring in retarder, annular channel 8 is arranged in 5 outer circle of planet rolling element,
Use aforementioned schemes in the present embodiment, the radial section of annular protrusion 7 and annular channel 8 can for semicircular arc-shaped, oval arcuation,
The shapes such as trapezoidal or triangle, preferably semicircular arc-shaped or oval arcuation section, annular protrusion 7 and annular channel 8 in the present embodiment
Cooperation so that planet rolling body 5 have certain automatic aligning effect, using its aligning of semicircular arc-shaped or oval arcuation section
It acts on particularly evident；Pass through annular protrusion 7 and annular ditch between planet rolling body 5 and retarder transmission inner shaft and retarder outer ring
Road 8 cooperates so that this planet drawing transmission shaft, which holds type speed reducer, substantially increases axial carrying capacity, when carrying axial load
Annular protrusion 7 and 8 side wall of annular channel, which mutually compress, increases its contact area, it is ensured that the normal operation of retarder simultaneously increases
Driving torque, this structure reduce the axially position to components such as retarder transmission inner shaft 3, retainer 6 and planet rolling bodies 5
Structure simplifies the structure of planet Traction Drive bearing type speed reducer, reduces its axial dimension, keeps its compact-sized convenient for peace
Dress, reduces the requirement to installation space, increases Installation Flexibility；Certainly, to increase its axial carrying capacity, in retarder
It is driven between 3 end face of inner shaft and 1 end face of wheel hub inner ring and roller road and roller is set, wherein retarder transmission 3 end face of inner shaft and wheel
1 end face of hub inner ring and roller constitute thrust bearing 12；It is limited by the mutual structure of annular protrusion 7 and annular channel 8, when
When planet rolling body both ends generate torque difference, the inclination deformation in planet rolling body axially direction can be effectively limited, it is effectively anti-
The generation only vibrated reduces noise, eliminates the phenomenon that gets stuck, and improves its and runs fluency；In axial same straight line size, this knot
The contact area increase that structure is driven planet rolling body 5 and retarder between inner shaft 3 and retarder outer ring 4, improves contact
The stress state in face reduces stress concentration, improves transmission power and transmission efficiency；In the present embodiment, in retarder transmission
Axis 3, planet rolling body 5, the frictional drive between 4 contact surface of retarder outer ring answer preferred wet friction to transmit, i.e., in CONTACT WITH FRICTION
Added with lubricant between face, to improve transmitting power, while fretting wear is reduced, improved efficiency and service life, in addition, to protect
Card retarder transmission inner shaft 3, planet rolling body 5, retarder outer ring 4 contact uniformly, can extend the axial dimension of planet rolling body 5
Or axially disposed multiple row planet rolling body 5.
In the present embodiment, the annular protrusion and annular channel are being used to generate in an interference fit frictional drive just
Pressure；For the planet Traction Drive bearing type speed reducer of the present embodiment in assembly, retarder is driven inner shaft 3 and planet rolling body 5
7 largest enveloping diameter of a circle of annular protrusion after combination is slightly larger than the maximum inner diameter of the annular channel 8 on retarder outer ring 4, i.e.,
It is assembled with certain magnitude of interference, when annular protrusion 7 and 8 position of annular channel are to timing, same retarder transmission inner shaft 3 and planet
8 minimum envelop diameter of a circle of annular channel after the combination of rolling element 5 is slightly larger than the minimum of the annular protrusion 7 on retarder outer ring 4
Internal diameter, after this structure guarantees that annular protrusion 7 and annular channel 8 assemble, the two is using interference fit, planet rolling body 5 adjacent two
The convex area between sunk area and two neighboring annular channel 8 corresponding with sunk area between a annular protrusion 7
It is gap-matched and is interference fitted between domain, reduce the accuracy of manufacture of components for convenience of the two assembly, between can be used
Gap cooperation improves transmission efficiency to further increase contact area, interference fit can be used, when using interference fit herein,
Adjacent annular protrusion 7 and may be configured as seamlessly transitting with in-between sunk area, and sunk area and annular protrusion form class
It is similar to the wavy shaped configuration of SIN function, this structure can further increase its contact area and reach higher transmission efficiency, can be into
One step limits the deformation of planet rolling body 5, so that the performance of this bearing type speed reducer various aspects gets a promotion, specifically herein no longer
It repeats；When annular protrusion 7 and annular channel 8 are using arc section, as shown in Figure 7 to 9, the mode of interference fit has three
Kind, as shown in fig. 7, the diameter for annular protrusion 7 is less than 8 diameter of annular channel, at this time at the wave crest of annular protrusion 7 and annular ditch
Contact is formed at 8 trough of road, when small offset occurs for the crest location by axial force annular protrusion 7, can pass through annular
The cambered surface of channel 8 makes its sliding restore home position and reaches aligning effect, and the diameter for being illustrated in figure 8 annular protrusion 7 is greater than ring
8 diameter of shape channel, 7 wave crest two sides of annular protrusion are contacted with the formation of 8 cambered surface of annular channel, same when the position of annular protrusion 7 is sent out
When giving birth to small offset, its sliding can be made to restore home position by the cambered surface of annular channel 8 and reach aligning effect, such as Fig. 9 institute
Show, the diameter of annular protrusion 7 is equal to 8 diameter of annular channel, and the two is at a fully engaged, this engagement its contact surface of effect is maximum, transmission
Power is maximum and aligning effect is best, similarly deposits when certain annular protrusion 7 and annular channel 8 are using other sectional shape structures
In above-mentioned three kinds of matching relationships, details are not described herein again；
Retarder transmission inner shaft 3 and planet rolling body 5 after assembling in the present embodiment will generate certain compressive deformation, and
Retarder outer ring 4 generates dilatancy, thus pressing force needed for generating the friction Traction Drive of planet rolling body 5, when planet rolls
When between kinetoplast 5 and retarder outer ring and retarder transmission inner shaft using wet friction transmission, retarder is driven inner shaft 3, row
Star rolling element 5,4 surface of retarder outer ring should pass through Surface hardening treatment, and three can work after mutually compressing in pressure viscosity value
In the very high lubricant of index, contact area generates the very high lubricating oil film of shearing strength under high pressure, utilizes the lubricating oil film
Frictional traction is generated, to improve transmission power, while reducing fretting wear.
In the present embodiment, the planet carrier 6 is two left part rows being linked together positioned at planet rolling body axial ends
Carrier 6a and right part planet carrier 6b, the planet rolling body and its wheel shaft 11 are rotatably assorted and are mounted on two planet carriers, institute
It states and is provided at least one set of mutually matched ring raceway 13 between wheel shaft outer circle and rolling element inner circle, set in the ring raceway
It is equipped with roller 14；The left part planet carrier 6a and right part planet carrier 6b of the present embodiment are bolted and are integrated, this structure is convenient
The installation of planet carrier, two planet carriers support planet rolling body 5, the global consistency of components are improved, in conjunction with annular protrusion 7
With the restriction effect of annular channel 8,5 run-off the straight of planet rolling body deformation is further limited；Wheel shaft outer circle and rolling element inner circle
On have cyclic annular arc-shaped track groove, the track groove in wheel shaft outer circle and rolling element inner circle constitutes ring raceway；Roller is located at annular
It can bear certain axial force in raceway, roller can be interference fitted with raceway or clearance fit, when passing through between roller and raceway
When interference fit, higher axial force can be born；And wheel shaft, roller and rolling element three cooperation are provided with the function of bearing
Can, bearing and each components are become one, structural compactness is improved；This structure planet carrier is fixed with wheel hub inner ring
Connection, the wheel shaft of planet rolling body are mounted on supporting wheel hub on planet carrier, without separately setting hub bearing, simplify the entirety of wheel hub
Structure；Raceway can in the axial setting multiple row of wheel shaft outer circle and rolling element inner circle, be arranged by multiple row improve its transmission stability and
Axial force bearing capacity, details are not described herein again.
In the present embodiment, the annular protrusion 7 is located in 5 outer circle of planet rolling body, and the annular channel 8 is located at retarder
It is driven in 3 outer circle of inner shaft and in 4 inner circle of retarder outer ring；The size of planet rolling body 5 is small in the axial direction in the present embodiment
In the size of retarder transmission inner shaft 3 and retarder outer ring 4, such setting can reduce the material of required removal when process component
Material improves processing efficiency, reduces difficulty of processing.
In the present embodiment, the hub body includes the wheel hub inner ring 1 being rotatably assorted and wheel hub outer ring 2, and the planet is led
Draw drive bearing type speed reducer to install between the inside and outside circle of wheel hub；Wherein wheel hub inner ring 1, wheel hub outer ring 2 are not limited to traditional ring
Hollow tubular structure, the formation disk-shaped structure closed at one end of wheel hub inner ring 1 and wheel hub outer ring 2, disk-shaped structure in the present embodiment
Can be integrally formed may be set to be ring body and is detachably connected with ring body and by the closed lid of one end, middle cover
According to specific structure shape, there are the through-hole passed through for input shaft, wheel hub inner ring 1 and wheel hub outer rings 2, and inside and outside circle to be used as to make on body
It is used with also having the function of that the left and right end cap of planet Traction Drive bearing type speed reducer, the inside and outside circle of wheel hub are formed after cooperating outside
In the space for accommodating the planet Traction Drive bearing type speed reducer；Wheel hub inner ring and the fit system of wheel hub outer ring are also not necessarily limited to
Fit system (such as: being similar to deep groove ball bearing Internal and external cycle fit system) inside and outside tradition, the inside and outside circle of wheel hub in the present embodiment
It is rotatably assorted by the way of the arrangement of left and right, the present embodiment is by the power output end and wheel of planet Traction Drive bearing type speed reducer
Hub inner ring 1 is sequentially connected, and wheel hub inner ring with hub drive wheel for connecting, and integrally formed be connected with is used on wheel hub outer ring 2
The ring flange 10 connecting with knuckle is provided with flange connecting hole on ring flange；Wheel hub outer ring 2 is opposite with vehicle frame solid when work
Fixed, vehicle drive unit (engine or motor) inputs the power that power is input to planet Traction Drive bearing type speed reducer
End, and by being transferred to the rotation of 1 drive hub of wheel hub wheel hub inner ring by its power output end after retarder progress speed change；
In the present embodiment, the planet carrier of the planet Traction Drive bearing type speed reducer as its power output end, and with
Wheel hub inner ring or the transmission connection of wheel hub outer ring；The planet carrier 6 of the planet Traction Drive bearing type speed reducer is drawn as planet
The power output end of drive bearing type speed reducer, and the wheel hub inner ring being connect with hub drive or wheel hub outer ring and the planet carrier
6 transmission connections；
In the present embodiment, the retarder outer ring 4 is fixedly connected with wheel hub outer ring 2；The planet carrier and wheel hub inner ring pass
Dynamic cooperation；Wheel hub inner ring 1 is connect with hub drive；The planet carrier of planet Traction Drive bearing type speed reducer is as output end, such as
In Fig. 1 to Fig. 4, the retarder transmission inner shaft 3 of planet Traction Drive bearing type speed reducer is used as input terminal, planet drawing transmission shaft
The planet carrier for holding type speed reducer is integrally formed as output end, the planet carrier and wheel hub inner ring 1, at this point, wheel hub inner ring 1 is directly made
For the planet carrier of planetary reduction gear, the power inputted from the retarder of planet Traction Drive bearing type speed reducer transmission inner shaft 3 is passed
It is handed to the wheel hub inner ring 1 of hub bearing and is rotated by 1 drive hub of wheel hub inner ring；The present invention by wheel hub inner ring 1 simultaneously conduct
The planet carrier of planet Traction Drive bearing type speed reducer uses, and achievees the purpose that multi-purpose, a simplified entire hub bearing with this
Structure.
In the present embodiment, the retarder outer ring 4 of the planet Traction Drive bearing type speed reducer is used as its power output end,
And it is sequentially connected with wheel hub inner ring 1 or wheel hub outer ring 2；Make the retarder outer ring 4 of the planet Traction Drive bearing type speed reducer
For the power output end of planet Traction Drive bearing type speed reducer, and the wheel hub inner ring being connect with hub drive or wheel hub outer ring with
The retarder outer ring transmission connection；
In the present embodiment, the planet carrier 6 is fixedly connected with wheel hub outer ring 2；The retarder outer ring 4 and wheel hub inner ring 1
Transmission cooperation；As shown in Figure 5 and Figure 6, the retarder outer ring 4 of planet Traction Drive bearing type speed reducer is used as power output end,
The retarder transmission inner shaft 3 of planet Traction Drive bearing type speed reducer is used as input terminal, planet Traction Drive bearing type speed reducer
Retarder outer ring 4 directly drive the wheel hub inner ring 1 that connect with hub drive as output end and rotate, planet Traction Drive bearing
The planet carrier of type speed reducer is fixedly connected with wheel hub outer ring 2 and for connecting with vehicle frame, and the wheel shaft 11 of planet rolling body can be direct
It is fixed on the end face of wheel hub outer ring 2, is used using the end face of wheel hub outer ring 2 as planet carrier, to simplify structure；
In the present embodiment, the retarder outer ring 4 is directly fixed on wheel hub outer ring 2, and retarder outer ring 4 is equipped with for adopting
Collect the sensor of its torsional deflection amount；Alternatively, in the present embodiment, the retarder outer ring 4 is by being coated at the thin-walled of the outer ring
Metal cylinder 9 is connected to wheel hub outer ring 2, and the thin-wall metal cylinder is equipped with the sensor for acquiring its torsional deflection amount；Sensing
Device may be disposed in the outer circle of retarder outer ring 4, or as shown in Figure 3 and Figure 4, sensor may be disposed on 9 inner wall of metal cylinder,
Sensor can be using elements such as existing foil gauges, outside the torsional deflection amount combination retarder by detecting retarder outer ring 4
The torsion stiffness of circle 4 is it can be concluded that the torque exported on wheel hub, outside the retarder of planet Traction Drive bearing type speed reducer
Circle 4 is connected to wheel hub outer ring 2 by thin-wall metal cylinder 9, and the sensor is set to 9 inside of thin-wall metal cylinder, thin-walled gold
Belong to the section of cylinder 9 be it is Z-shaped, both ends are fastened by bolts respectively in 4 end face of 2 end face of wheel hub outer ring and retarder outer ring, due to
The torsion stiffness of thin-wall metal cylinder 9 is lower, therefore the accuracy and sensitivity of torque detection can be improved.
In the present embodiment, the planet rolling body 5 can axially disposed multiple row；Make planet rolling body and retarder outer ring and
The contact that retarder is driven between inner shaft is more uniform, increases planet rolling body 5 and retarder outer ring and retarder is driven inner shaft
Contact area, reduce planet rolling body 5 contact stress, the load capacity of retarder is effectively improved, when planet rolling body 5 is adopted
When with multiple row, the centre for connecting adjacent two column planet rolling body wheel shaft can be set between adjacent two column planet rolling body 5
Planet carrier, or the assembly magnitude of interference of adjustment each column planet rolling body 5, so as to adjust planet Traction Drive bearing type speed reducer
Transmission power；Adjacent two column planet rolling body 5 is circumferentially uniformly staggered along retarder transmission inner shaft；This arrangement can
Planet rolling body 5 is improved along the density of retarder transmission inner shaft and retarder outer ring circumferential direction, makes the stress and change of retarder outer ring
Shape more evenly, is driven more stable.
In the present embodiment, roller road and roller and roller are set between the wheel shaft 11 and planet rolling body of planet rolling body
Retainer, planet rolling body, wheel shaft 11, roller road, roller and roller cage form deep groove ball bearing, subtract through this structure
Bearing is directly integrated into one with wheel shaft 11 and planet rolling body by the friction between small wheel shaft 11 and planet rolling body, this structure
Body is further simplified structure；Simultaneously because the mutual restriction effect of annular protrusion 7 and annular channel 8, this deep groove ball bearing are not necessarily to
Carry axial force.
In the present embodiment, as depicted in figs. 1 and 2, retarder transmission inner shaft 3 is provided with input shaft using solid axle construction
Effect, retarder transmission inner shaft 3 stretch in planet Traction Drive bearing type speed reducer from the through-hole of 2 closed section of wheel hub outer ring,
Sealing ring is set between wheel hub outer ring 2 and retarder transmission inner shaft 3, is equally arranged between wheel hub inner ring 1 and retarder outer ring 4 close
Seal ring, so that forming the installation space of sealing inside planet Traction Drive bearing type speed reducer；Other structures, which equally pass through, adds
Sealing ring makes the installation space that sealing is formed inside planet Traction Drive bearing type speed reducer, and details are not described herein again.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (10)
1. a kind of planet Traction Drive bearing type integration deceleration wheel hub, it is characterised in that: drawn including hub body and planet
Drive bearing type speed reducer, the planet Traction Drive bearing type speed reducer include retarder transmission inner shaft, retarder outer ring, row
Star rolling element and planet carrier are collectively formed planet Traction Drive train, the planet rolling body by way of frictional drive with subtract
Fast device transmission inner shaft and the cooperation of retarder outer ring, the power output end of the planet Traction Drive train are sequentially connected in wheel hub sheet
Body.
2. planet Traction Drive bearing type integration deceleration wheel hub according to claim 1, it is characterised in that: the planet
Pass through between rolling element outer circle and retarder outer ring inner circle and between the planet rolling inner shaft outer circle of round and retarder transmission in vitro
Annular protrusion and annular channel form matching pair.
3. planet Traction Drive bearing type integration deceleration wheel hub according to claim 2, it is characterised in that: the annular
Protrusion and annular channel are used to generate the normal pressure of frictional drive in an interference fit.
4. planet Traction Drive bearing type integration deceleration wheel hub according to claim 1, it is characterised in that: the planet
Frame is the two left part planet carriers and right part planet carrier being linked together positioned at planet rolling body axial ends, the planet rolling
Body and its wheel shaft are rotatably assorted and are mounted on two planet carriers；It is provided at least between the wheel shaft outer circle and rolling element inner circle
One group of mutually matched ring raceway is provided with roller in the ring raceway.
5. planet Traction Drive bearing type integration deceleration wheel hub according to claim 2, it is characterised in that: the annular
Protrusion be located at planet rolling in vitro justify on, the annular channel be located at retarder transmission inner shaft outer circle on and retarder outer ring inner circle
On.
6. planet Traction Drive bearing type integration deceleration wheel hub according to claim 1, it is characterised in that: the wheel hub
Ontology includes the wheel hub inner ring being rotatably assorted and wheel hub outer ring, and the planet Traction Drive bearing type speed reducer is installed in wheel hub
Between inside and outside circle.
7. planet Traction Drive bearing type integration deceleration wheel hub according to claim 6, it is characterised in that: the planet
The planet carrier of Traction Drive bearing type speed reducer is sequentially connected as its power output end, and with wheel hub inner ring or wheel hub outer ring.
8. planet Traction Drive bearing type integration deceleration wheel hub according to claim 7, it is characterised in that: the deceleration
Device outer ring is fixedly connected with wheel hub outer ring；The planet carrier and the transmission of wheel hub inner ring cooperate.
9. planet Traction Drive bearing type integration deceleration wheel hub according to claim 6, it is characterised in that: the planet
The retarder outer ring of Traction Drive bearing type speed reducer connects as its power output end, and with wheel hub inner ring or the transmission of wheel hub outer ring
It connects.
10. planet Traction Drive bearing type integration deceleration wheel hub according to claim 8, it is characterised in that: the row
Carrier is fixedly connected with wheel hub outer ring；The retarder outer ring and the transmission of wheel hub inner ring cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408717.4A CN109538704A (en) | 2018-11-23 | 2018-11-23 | Planet Traction Drive bearing type integration deceleration wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408717.4A CN109538704A (en) | 2018-11-23 | 2018-11-23 | Planet Traction Drive bearing type integration deceleration wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109538704A true CN109538704A (en) | 2019-03-29 |
Family
ID=65850050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811408717.4A Pending CN109538704A (en) | 2018-11-23 | 2018-11-23 | Planet Traction Drive bearing type integration deceleration wheel hub |
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| Country | Link |
|---|---|
| CN (1) | CN109538704A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271421A (en) * | 2019-12-26 | 2020-06-12 | 重庆大学 | Planetary traction transmission bearing type speed reducer |
| CN111457066A (en) * | 2020-04-09 | 2020-07-28 | 重庆大学 | Bearing type traction speed reducer |
| CN111664177A (en) * | 2020-04-21 | 2020-09-15 | 重庆大学 | Integrated planetary reduction bearing for hub motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1737997A (en) * | 1922-08-28 | 1929-12-03 | Garrard Gears Ltd | Means for the transmission of power |
| CN202906660U (en) * | 2012-11-15 | 2013-04-24 | 浙江超级电气科技有限公司 | Integrated intelligent rear-drive wheel hub motor |
| CN105570410A (en) * | 2016-03-04 | 2016-05-11 | 重庆大学 | Multi-line planetary traction and transmission type speed reducing bearing |
| CN205639286U (en) * | 2016-03-04 | 2016-10-12 | 重庆大学 | Planet pulls transmission speed reduction bearing |
| CN106763523A (en) * | 2016-11-11 | 2017-05-31 | 重庆大学 | Deceleration hub bearing |
-
2018
- 2018-11-23 CN CN201811408717.4A patent/CN109538704A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1737997A (en) * | 1922-08-28 | 1929-12-03 | Garrard Gears Ltd | Means for the transmission of power |
| CN202906660U (en) * | 2012-11-15 | 2013-04-24 | 浙江超级电气科技有限公司 | Integrated intelligent rear-drive wheel hub motor |
| CN105570410A (en) * | 2016-03-04 | 2016-05-11 | 重庆大学 | Multi-line planetary traction and transmission type speed reducing bearing |
| CN205639286U (en) * | 2016-03-04 | 2016-10-12 | 重庆大学 | Planet pulls transmission speed reduction bearing |
| CN106763523A (en) * | 2016-11-11 | 2017-05-31 | 重庆大学 | Deceleration hub bearing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271421A (en) * | 2019-12-26 | 2020-06-12 | 重庆大学 | Planetary traction transmission bearing type speed reducer |
| CN111457066A (en) * | 2020-04-09 | 2020-07-28 | 重庆大学 | Bearing type traction speed reducer |
| CN111457066B (en) * | 2020-04-09 | 2021-07-23 | 重庆大学 | Bearing type traction speed reducer |
| CN111664177A (en) * | 2020-04-21 | 2020-09-15 | 重庆大学 | Integrated planetary reduction bearing for hub motor |
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Application publication date: 20190329 |