CN109372963A - More channel-type planet Traction Drive bearing type speed reducers - Google Patents
More channel-type planet Traction Drive bearing type speed reducers Download PDFInfo
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- CN109372963A CN109372963A CN201811407549.7A CN201811407549A CN109372963A CN 109372963 A CN109372963 A CN 109372963A CN 201811407549 A CN201811407549 A CN 201811407549A CN 109372963 A CN109372963 A CN 109372963A
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 111
- 230000005540 biological transmission Effects 0.000 claims abstract description 86
- 238000000338 in vitro Methods 0.000 claims abstract description 7
- 241000222712 Kinetoplastida Species 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000969 carrier Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
- F16H13/08—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion with balls or with rollers acting in a similar manner
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a kind of more channel-type planet Traction Drive bearing type speed reducers, including the planet Traction Drive train that transmission inner shaft, outer ring, planet rolling body and planet carrier are collectively formed, the planet rolling is in vitro between round and outer ring inner circle and planet rolling is justified form matching pair by annular protrusion and annular channel between transmission inner shaft outer circle in vitro；The planet rolling body is cooperated by way of frictional drive with transmission inner shaft and outer ring；The present invention passes through the limitation of the mutual structure of annular protrusion and annular channel, when being driven transmitting torque between inner shaft and planet rolling body, planet rolling body can effectively be limited and be driven inner shaft in the relative displacement in the axially and radially direction of outer ring, have the function of bearing and deceleration transmission concurrently, support stiffness is high, stable drive, it is compact-sized.
Description
Technical field
The invention belongs to planetary reduction gear technical field, in particular to a kind of more channel-type planet Traction Drive bearing types subtract
Fast device.
Background technique
Planetary reduction gear be it is a kind of using planetary gear speed reducing mechanism realize slow down device, due to planetary reduction gear size is small,
Transmission ratio is big, therefore is commonly used in the limited device of retarder installation space, such as hub motor, existing planetary reduction gear
Device generallys use planetary gear reducing mechanism, i.e., using planetary gear as planet rolling body, passes through tooth with Internal and external cycle simultaneously
Wheel engagement transmitting power, however, existing this planetary reduction gear had been driven due to being driven using planetary gear engagement
Cheng Zhong, since planetary gear pitch error will cause periodic shock, causing it to be driven, fluctuation is stronger, and noise is big, meanwhile,
It since transmission gear also needs additional bearing support to play rotation, needs separately to add a bearing, is unfavorable for simplifying the knot of retarder
Structure.In addition, planetary gear is processed, assembly difficulty is larger, higher cost.
Therefore, in order to solve the above problem, need a kind of using between transmission inner shaft, planet rolling body, outer ring contact surface
Frictional force carries out passing movement and power, realizes epicyclic friction gear transmission and bearing support function, this planet drawing transmission shaft
It holds retarder and integrates deceleration and bearing function, structure is simple, smooth running, and bearing is reliable, overload can skid, be processed into
This low advantage；
A kind of planet Traction Drive speed reduction bearing, rolling element and inside and outside circle are disclosed in patent CN205639286U
Between cooperated using smooth surface, the unbearable axial load of this structure, for guarantee to bear certain axial load needs add it is additional
Axial direction positioning device, leading to speed reduction bearing, structure is complicated, size is larger in the axial direction for overall structure, and class formation is being born
It will affect the operation being normally driven when axial force, and efficiency caused to be greatly reduced；This structure during the work time, output shaft by
The moment of resistance or moment of flexure can act on rolling element, cause rolling element both ends to generate torque difference, this torque difference will lead to rolling element
Torsion is deformed in its axis direction run-off the straight, this deformation will lead to vibration and noise and increase, efficiency decline, and when operating blocks
Shell causes operation not smooth, or even stuck phenomenon can occur；
Multiple row planet Traction Drive speed reduction bearing is disclosed in patent CN105570410A, which is rolled using multiple row
Kinetoplast rotation, so that the contact between rolling element, inner ring and outer ring is more uniform on circumferential and axial, to reduce rolling
Torsion offset of the kinetoplast shafting in transmission process, avoid retarder transmission work in interfere or it is stuck, improve pass
Dynamic quality and efficiency, this structure reduce its torsion offset as cost to increase rolling element quantity, increase the complexity of structure,
Cost is improved, and can not effectively bear axial force.
Therefore the structure to above-mentioned speed reduction bearing is needed to improve, its structure can be simplified and reduce axial dimension while avoiding rolling
Axially inclined deformation occurs for kinetoplast, prevents from vibrating, and reduces noise, improves efficiency and eliminate the phenomenon that gets stuck, and it is smooth to improve its operation
Degree.
Summary of the invention
In view of this, the present invention provides a kind of more channel-type planet Traction Drive bearing type speed reducers, simplifies its structure and subtract
Small axial dimension avoids planet rolling body that axially inclined deformation occurs simultaneously, prevents from vibrating, and reduces noise, improves efficiency and eliminate
Get stuck phenomenon, improves it and runs fluency.
More channel-type planet Traction Drive bearing type speed reducers of the invention, including transmission inner shaft, outer ring, planet rolling body
The planet Traction Drive train being collectively formed with planet carrier, the planet rolling justifies between the inner circle of outer ring in vitro and planet rolls
Matching pair is formed by annular protrusion and annular channel between kinetoplast outer circle and transmission inner shaft outer circle；The planet rolling body passes through
The mode and transmission inner shaft of frictional drive and outer ring cooperate.
Further, the annular protrusion and annular channel are used to generate the positive pressure of frictional drive in an interference fit
Power.
Further, the annular protrusion be located at planet rolling in vitro justify on, the annular channel be located at transmission inner shaft outer circle
In the inner circle of outer ring.
Further, the planet carrier includes two left part planet carriers being linked together positioned at planet rolling body axial ends
With right part planet carrier, the planet rolling body and its wheel shaft are rotatably assorted and are mounted on two planet carriers.
Further, at least one set of mutually matched ring raceway is provided between the wheel shaft outer circle and rolling element inner circle,
Roller is provided in the ring raceway.
Further, the outer ring axial ends has been respectively fixedly connected with left end cap and right end cap.
Further, the planet rolling body can axially disposed multiple row.
Further, adjacent two column planet rolling body is circumferentially uniformly staggered along transmission inner shaft.
Further, the planet carrier and the opposite end of transmission inner shaft are coaxially disposed in a manner of being rotatably assorted.
Further, oil sealing is provided between the left end cap and transmission inner shaft and between right end cap and planet carrier.
Beneficial effects of the present invention:
The present invention is by the limitation of the mutual structure of annular protrusion and annular channel, when between transmission inner shaft and planet rolling body
When transmitting torque, the inclination deformation that can effectively limit planet rolling body axially direction reduces torsion offset, effective to prevent
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
Structure increases planet rolling body and the contact area being driven between inner shaft, outer ring, improves the stress state of contact surface, reduces
Stress concentration, improves transmission power and transmission efficiency；Pass through convex annular between planet rolling body and transmission inner shaft and outer ring
It rises and annular channel cooperates so that this speed reduction bearing can carry axial load, annular protrusion and annular ditch when carrying axial load
Road side wall mutually compresses the contact area for increasing its frictional drive, it is ensured that the normal operation of retarder simultaneously increases transmission torsion
Square；This structure reduces the axial positioning structure to components such as transmission inner shaft, planet carrier and planet rolling bodies, simplifies deceleration
The structure of bearing reduces its axial dimension, make its it is compact-sized be easily installed, reduce the requirement to installation space, increase
Installation Flexibility；
The present invention is by the mutual cooperation of annular protrusion and annular channel so that planet rolling body has automatic aligning effect；
Left and right planet carrier of the invention forms effective support to planet rolling body, improves the global consistency of components, knot
The restriction effect of annular protrusion and annular channel is closed, planet rolling body is further limited and axial inclination and distortion occurs；
Left and right end cap of the invention is without being subjected to axial load, therefore left and right end cap is reduced without contacting with planet carrier
Installation accuracy is easily installed, and it need to only meet sealing function, and the materials requirement and intensity for reducing left and right end cap are wanted
It asks, reduces the materials cost of material.
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is annular protrusion and annular channel the first fit system structural schematic diagram；
Fig. 3 is second of fit system structural schematic diagram of annular protrusion and annular channel；
Fig. 4 is annular protrusion and annular channel the third fit system structural schematic diagram；
Specific embodiment
Fig. 1 is schematic structural view of the invention；Fig. 2 is annular protrusion and annular channel the first fit system structural representation
Figure；Fig. 3 is second of fit system structural schematic diagram of annular protrusion and annular channel；Fig. 4 is annular protrusion and annular channel the
Three kinds of fit system structural schematic diagrams；
It is as shown in the figure: more channel-type planet Traction Drive bearing type speed reducers of the present embodiment, including it is transmission inner shaft 1, outer
The planet Traction Drive train that circle 2, planet rolling body 3 and planet carrier 6 are collectively formed, 3 outer circle of planet rolling body and outer ring 2
Match between inner circle and by annular protrusion 4 and the formation of annular channel 5 between 3 outer circle of planet rolling body and transmission 1 outer circle of inner shaft
It closes secondary；The planet rolling body 3 is cooperated by way of frictional drive with transmission inner shaft 1 and outer ring 3；Be driven inner shaft 1, outer ring 2,
The position of planet rolling body 3 and planet carrier 6 corresponds respectively to sun gear, outer ring, planetary gear and the planet in planet traction train
Frame；Be driven inner shaft 1, outer ring 2 and planet carrier 6 wherein arbitrarily both as the input terminal of retarder and output end, input terminal and
Output end cooperates with output shaft and output shaft transmission respectively, wherein transmission inner shaft 1, outer ring 2 can be used as retarder input terminal and
Output end has the function that deceleration torque increase, and same outer ring 2 and planet carrier 6 also can be used as the input terminal and output end of retarder, passes
Dynamic inner shaft 1, outer ring 2 and planet carrier 6 are wherein arbitrarily both as the input terminal of retarder and output end, and the present embodiment is no longer
It repeating one by one, the present embodiment uses transmission inner shaft 1 and planet carrier 6 as the input terminal of retarder and the scheme of output end, wherein
Transmission inner shaft 1 is not limited to traditional shaft-like structure, and hollow tubular structure can also be used in transmission inner shaft 1, when transmission inner shaft 1 is tubular
Axle sleeve structure when, settable spline or cooperated using the modes such as interference fit and input shaft transmission in axle sleeve, when transmission inner shaft 1
It when for solid axle construction, can be used using this solid shafting as input shaft, this structure will be driven inner shaft and input shaft is integrated, simple
The structure of this speed reduction bearing is changed, this bearing type speed reducer is using between transmission inner shaft 1, planet rolling body 3,2 contact surface of outer ring
Normal pressure carry out the radial support of axis, using transmission inner shaft 1, planet rolling body 3, the frictional force between 2 contact surface of outer ring into
Row passing movement and power, to realize epicyclic friction gear transmission and bearing function, this bearing type speed reducer collection slows down and axis
It holds function to be integrated, for using the retarder of gear transmission mode, this bearing type speed reducer is simple with structure, supports
The advantages that smooth running, overload can skid when transmission；The arrangement of this structure makes planet rolling body and transmission inner shaft be pressurized,
Therefore it is not high for the diametric requirements of planet rolling body and transmission inner shaft, it can relative to planet traction train this programme using gear
The radial arrangement size that planet draws train is reduced by reducing planet rolling body and being driven the diameter of inner shaft, reduces retarder
Overall dimensions, so that entire driving system structure is compact；The annular protrusion 4 and annular channel 5 of the present embodiment can be in the axial direction
Multiple groups are set, two groups are provided in the present embodiment, annular protrusion 4 and annular channel 5 can improve transmission inner shaft and planet rolling body
And the support situation of planet rolling body and outer ring, and the bending stiffness of bearing type speed reducer is improved, and increase contact connectio
Improve driving torque and power；Annular protrusion 4 may be provided at 3 outer circle of planet rolling body, and the setting of annular channel 5 is in transmission inner shaft 1
The position of 2 inner circle of outer circle and outer ring, certain annular protrusion 4 and annular channel 5 can also be exchanged, i.e. the setting of annular protrusion 4 is passing
In dynamic 2 inner circle of 1 outer circle of inner shaft and outer ring, annular channel 5 is arranged in 3 outer circle of planet rolling element, using aforementioned in the present embodiment
The axial cross section of scheme, annular protrusion 4 and annular channel 5 can be the shapes such as semicircular arc-shaped, oval arcuation, trapezoidal or triangle
Shape, preferably semicircular arc-shaped or oval arcuation section in the present embodiment, the cooperation of annular protrusion 4 and annular channel 5 is so that planet rolls
Kinetoplast 3 has automatic aligning effect, and using semicircular arc-shaped or oval arcuation section, its aligning effect is particularly evident；Planet rolling body
By annular protrusion 4 and the cooperation of annular channel 5 so that this bearing type speed reducer can carry axial direction between 3 and transmission inner shaft and outer ring
Load, when carrying axial load, annular protrusion 4 and 5 side wall of annular channel, which are mutually compressed, increases its CONTACT WITH FRICTION area, can protect
It demonstrate,proves the normal operation of retarder and increases driving torque；This structure reduces to transmission inner shaft 1, planet carrier 6 and planet rolling
The axial positioning structure of the components such as kinetoplast simplifies the structure of bearing type speed reducer, reduces its axial dimension, keeps its structure tight
It gathers and is easily installed, reduce the requirement to installation space, increase Installation Flexibility；Pass through annular protrusion 4 and annular channel 5
Mutual structure limitation can effectively limit planet rolling body in its axis when being driven transmitting torque between inner shaft and planet rolling body
Reduce it to the inclination deformation in direction and reverse offset, effectively prevent the generation of vibration, reduce noise, eliminate the phenomenon that gets stuck,
It improves it and runs fluency；In axial same straight line size, this structure makes planet rolling body 3 and transmission inner shaft 1, outer ring 2
Between contact area increase, improve the stress state of contact surface, reduce stress concentration, improve transmission power and transmission
Efficiency；In the present embodiment, transmission inner shaft 1, planet rolling body 3, the frictional drive between 2 contact surface of outer ring answer preferred wet friction to pass
It passs, i.e., added with lubricant between frictional contact surface, to improve transmitting power, while reducing fretting wear, improve efficiency and make
The axis of planet rolling body 4 can be extended in addition, contacting uniformly for guarantee planet rolling body 3 with outer ring 2 and transmission inner shaft 1 with the service life
To size or axially disposed multiple row planet rolling body 3.
In the present embodiment, the wheel shaft 7 of planet rolling body drives planet carrier 6, and the planet carrier 6 is rotatably assorted in transmission
Axis；Planet rolling body 3 is installed on planet rolling body wheel shaft 7 in the present embodiment, and planet rolling body wheel shaft is used as planet to draw
The planet wheel spindle of train can be used bearing realization and be rotatably assorted between planet rolling body wheel shaft 7 and planet rolling body 4, or
Person processes raceway on planet rolling element wheel shaft and installs roller realization and is rotatably assorted；The present embodiment can be connect by transmission inner shaft 1
It is exported by power and by planet carrier 6, realizes the effect of deceleration increment, power input can also be received by planet carrier 6 and by transmission inner shaft 1
Output, realize accelerating function, wherein transmission inner shaft 1 and planet carrier 6 be convenient for receive power input or output power, it is settable
Spline and power input shaft or output shaft are sequentially connected；The wherein structures such as settable spline or shaft coupling and output on planet carrier 6
Axis transmission connection, certainly, planet carrier 6 can also be integrally formed with output shaft, to simplify the structure of its link position；When this bearing
When type speed reducer needs to realize deceleration, power can be received by transmission inner shaft 1 and be outputed power by planet carrier 6, certainly, work as bearing
When type speed reducer needs to realize speedup, power should be received by planet carrier 6 and be exported by transmission inner shaft 1；
In the present embodiment, the annular protrusion 4 and annular channel 5 are in an interference fit for generating frictional drive
Normal pressure；Annular protrusion 4 of the bearing type speed reducer of the present embodiment in assembly, after being driven inner shaft 1 and the combination of planet rolling body 3
The diameter of largest enveloping outer ring has the assembly of certain magnitude of interference slightly larger than the maximum inner diameter of the annular channel 5 on outer ring 2, when
Annular protrusion 4 and 5 position of annular channel are to timing, and the annular channel 5 after being equally driven inner shaft 1 and the combination of planet rolling body 3 is most
The diameter of small envelope outer ring is slightly larger than the minimum diameter of the annular protrusion 4 on outer ring 2, this structure guarantees annular protrusion 4 and annular
After channel 5 assembles, the two using interference fit, sunk area between the two neighboring annular protrusion 4 of planet rolling body 3 and with
It is gap-matched and is interference fitted between elevated regions between the corresponding two neighboring annular channel 5 of sunk area
Can, reduce the accuracy of manufacture of components for convenience of the two assembly, clearance fit can be used, is improved to further increase contact area
Interference fit can be used in transmission efficiency, when herein using interference fit when, adjacent annular protrusion 4 and with in-between recess
Region may be configured as seamlessly transitting, the wavy shaped configuration of sunk area and annular protrusion composition similar to SIN function, this structure
Its contact area can be further increased and reach higher transmission efficiency, can further limit the deformation of planet rolling body 3, so that this
The performance of bearing type speed reducer various aspects gets a promotion, and specific details are not described herein again；When annular protrusion 4 and annular channel 5 use
When arc section, as shown in Figures 2 to 4, there are three types of the modes of interference fit, as shown in Fig. 2, being the diameter of annular protrusion 4
Less than 5 diameter of annular channel, contact at the wave crest of annular protrusion 4 with being formed at 5 trough of annular channel at this time, when by axial force
When small offset occurs for the crest location of annular protrusion 4, its sliding can be made to restore home position by the cambered surface of annular channel 5
Reach aligning effect, be illustrated in figure 3 annular protrusion 4 diameter be greater than 5 diameter of annular channel, 4 wave crest two sides of annular protrusion with
5 cambered surface of annular channel forms contact, equally when small offset occurs for the position of annular protrusion 4, can pass through annular channel 5
Cambered surface makes its sliding restore home position and reaches aligning effect, as shown in figure 4, the diameter of annular protrusion 4 is equal to annular channel 5 directly
Diameter, the two is at a fully engaged, this engagement its contact surface of effect is maximum, and transmission power is maximum and aligning effect is best, certain convex annular
Similarly there is above-mentioned three kinds of matching relationships when playing 4 and other sectional shape structures of use of annular channel 5, details are not described herein again；
Transmission inner shaft 1 and planet rolling body 3 after assembling in the present embodiment will generate certain compressive deformation, and outer ring 2
Dilatancy is generated, thus pressing force needed for generating the friction Traction Drive of planet rolling body 3, when planet rolling body 3 and outer ring
And when between transmission inner shaft using wet friction transmission, transmission inner shaft 1, planet rolling body 3,2 surface of outer ring should be by surfaces
Cure process, three can be worked after mutually compressing in the very high lubricant of pressure viscosity value index number, and contact area is under high pressure
The very high lubricating oil film of shearing strength is generated, frictional traction is generated using the lubricating oil film, to improve transmission power, simultaneously
Reduce fretting wear.
In the present embodiment, the annular protrusion 4 is located in 3 outer circle of planet rolling body, and the annular channel 5 is located in transmission
In 1 outer circle of axis and in 2 inner circle of outer ring；The size of planet rolling body 3 is less than the ruler of transmission inner shaft 1 and outer ring 2 in the axial direction
Very little, such setting can reduce the material of required removal when process component, improve processing efficiency, reduce difficulty of processing.
In the present embodiment, the planet carrier 6 includes two left parts being linked together positioned at 3 axial ends of planet rolling body
Planet carrier 6a and right part planet carrier 6b, left part planet carrier 6a and right part planet carrier 6b are Ju You torsion retainer and output holding
The effect of frame, the planet rolling body and its wheel shaft are rotatably assorted and are mounted on two planet carriers；The planet rolling body wheel
What 7 both ends of axis were rotatably assorted is mounted on left and right planet carrier；The left and right planet carrier of the present embodiment, which is bolted, to be integrated,
This structure facilitates the installation of retainer, and left and right planet carrier supports planet rolling body 3, improves the global consistency of components, ties
The restriction effect of annular protrusion 4 and annular channel 5 is closed, 3 run-off the straight of planet rolling body deformation is further limited.
In the present embodiment, at least one set of mutually matched annular rolling is provided between the wheel shaft outer circle and rolling element inner circle
Road 11 is provided with roller 12 in the ring raceway；There are cyclic annular arc-shaped track groove, wheel shaft in wheel shaft outer circle and rolling element inner circle
Track groove in outer circle and rolling element inner circle constitutes ring raceway；Roller, which is located in ring raceway, can bear certain axial force, rolling
Son can be interference fitted with raceway or clearance fit can be born higher when passing through interference fit between roller and raceway
Axial force；And wheel shaft, roller and rolling element three cooperation are provided with the function of bearing, and bearing and each components are integrated
It is integrated, improves structural compactness；This structure simplifies the overall structure of retarder without separately setting retarder bearing；Raceway
Multiple row axially can be set in wheel shaft outer circle and rolling element inner circle, pass through multiple row and its transmission stability of raising and axial force carrying are set
Ability, details are not described herein again.
In the present embodiment, 2 axial ends of outer ring has been respectively fixedly connected with left end cap 8 and right end cap 9；8 He of left end cap
Right end cap 9 is fixed by screw and outer ring, and the present embodiment middle left and right is located at the two sides of 3 axial direction of planet rolling body,
Left and right end cap is without being subjected to axial load, therefore left and right end cap reduces installation accuracy, without contacting with planet carrier convenient for peace
Dress, and it need to only meet sealing function, reduce the materials requirement and intensity requirement of left and right end cap, reduce the use of material
Expect cost.
In the present embodiment, the planet rolling body 3 can axially disposed multiple row；Make in planet rolling body and outer ring and transmission
Contact between axis is more uniform, increases the contact area of planet rolling body 3 and Internal and external cycle, reduces the contact of planet rolling body 3
Stress effectively improves the load capacity of retarder, can be in adjacent two column planet rolling body 3 when planet rolling body 3 is using multiple row
Between center row carrier 6 for connecting adjacent two column planet rolling body wheel shaft is set, or adjustment each column planet rolling body 3
Magnitude of interference is assembled, so as to adjust the transmission power of bearing type speed reducer.
In the present embodiment, adjacent two column planet rolling body 3 is circumferentially uniformly staggered along transmission inner shaft；This arrangement
Planet rolling body 3 be can be improved along the density of transmission inner shaft and outer ring circumferential direction, more evenly, transmission is more for the stress for making outer ring and deformation
Steadily.
In the present embodiment, the planet carrier 6 and the opposite end of transmission inner shaft 1 are coaxially disposed in a manner of being rotatably assorted；It passes
Dynamic 1 one end of inner shaft stretches in the supported hole of 6 opposing end surface of planet carrier, is driven between inner shaft 1 and supported hole and passes through bearing-transmission
Cooperation, this structure prevent transmission inner shaft 1 from forming cantilever design, improve the stability of transmission inner shaft.
In the present embodiment, it is arranged between setting and right end cap 9 and planet carrier 6 between the left end cap 8 and transmission inner shaft 1
There is oil sealing 10；By oil sealing to being sealed inside bearing type speed reducer, left end cap 8 and right end cap 9 gather oil sealing to bearing type
It is sealed inside retarder, prevents leakage of lubricant.
This bearing type speed reducer is similar with deep groove ball bearing assembly in assembly, makes to be driven inner shaft 1, outer ring 2 partially first
The heart cooperates so that therebetween there are sufficiently large installation gap, and planet rolling body 3 is installed in transmission from installation gap
Between axis 1, outer ring 2, multiple planet rolling bodies 3 are located at installation gap at this time, then make planet rolling body 3 by peripheral hardware tool
It is axial to be distributed between transmission inner shaft 1 and outer ring 2, it is driven both inner shaft 1 and outer ring 2 automatic coaxial arrangement at this time.
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 more channel-type planet Traction Drive bearing type speed reducers, it is characterised in that: including being driven inner shaft, outer ring, planet
The planet Traction Drive train that rolling element and planet carrier are collectively formed, the planet rolling in vitro justify outer ring inner circle between and
Planet rolling forms matching pair by annular protrusion and annular channel between circle and transmission inner shaft outer circle in vitro；The planet rolling
Body is cooperated by way of frictional drive with transmission inner shaft and outer ring.
2. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, 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.
3. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, it is characterised in that: the annular
Protrusion be located at planet rolling in vitro justify on, the annular channel be located at transmission inner shaft outer circle and outer ring inner circle on.
4. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, it is characterised in that: the planet
Frame includes the two left part planet carriers and right part planet carrier being linked together positioned at planet rolling body axial ends, the planet rolling
Kinetoplast and its wheel shaft are rotatably assorted and are mounted on two planet carriers.
5. more channel-type planet Traction Drive bearing type speed reducers according to claim 4, it is characterised in that: the wheel shaft
It is provided at least one set of mutually matched ring raceway between outer circle and rolling element inner circle, is provided with rolling in the ring raceway
Son.
6. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, it is characterised in that: the outer ring
Axial ends has been respectively fixedly connected with left end cap and right end cap.
7. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, it is characterised in that: the planet
Rolling element can axially disposed multiple row.
8. more channel-type planet Traction Drive bearing type speed reducers according to claim 7, it is characterised in that: adjacent two column
Planet rolling body is circumferentially uniformly staggered along transmission inner shaft.
9. more channel-type planet Traction Drive bearing type speed reducers according to claim 1, it is characterised in that: the planet
Frame and the opposite end of transmission inner shaft are coaxially disposed in a manner of being rotatably assorted.
10. more channel-type planet Traction Drive bearing type speed reducers according to claim 6, it is characterised in that: the left side
Oil sealing is provided between end cap and transmission inner shaft and between right end cap and planet carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407549.7A CN109372963A (en) | 2018-11-23 | 2018-11-23 | More channel-type planet Traction Drive bearing type speed reducers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407549.7A CN109372963A (en) | 2018-11-23 | 2018-11-23 | More channel-type planet Traction Drive bearing type speed reducers |
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| CN109372963A true CN109372963A (en) | 2019-02-22 |
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|---|---|---|---|
| CN201811407549.7A Pending CN109372963A (en) | 2018-11-23 | 2018-11-23 | More channel-type planet Traction Drive bearing type speed reducers |
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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 |
| CN115027654A (en) * | 2022-07-15 | 2022-09-09 | 宁波海伯集团有限公司 | Marine propeller |
| KR20230068796A (en) * | 2021-11-11 | 2023-05-18 | 주식회사 현대케피코 | Motor integrated reducer and its assembly method |
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| CN2117504U (en) * | 1991-12-07 | 1992-09-30 | 中南工业大学 | Friction conveying epicyclic gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111271421A (en) * | 2019-12-26 | 2020-06-12 | 重庆大学 | Planetary traction transmission bearing type speed reducer |
| KR20230068796A (en) * | 2021-11-11 | 2023-05-18 | 주식회사 현대케피코 | Motor integrated reducer and its assembly method |
| KR102657742B1 (en) * | 2021-11-11 | 2024-04-15 | 주식회사 현대케피코 | Motor integrated reducer and its assembly method |
| CN115027654A (en) * | 2022-07-15 | 2022-09-09 | 宁波海伯集团有限公司 | Marine propeller |
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