CN206478172U - A kind of Eccentrically swinging gear device - Google Patents
A kind of Eccentrically swinging gear device Download PDFInfo
- Publication number
- CN206478172U CN206478172U CN201720118490.4U CN201720118490U CN206478172U CN 206478172 U CN206478172 U CN 206478172U CN 201720118490 U CN201720118490 U CN 201720118490U CN 206478172 U CN206478172 U CN 206478172U
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- tooth
- pin
- gear
- bent axle
- wobble
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Abstract
The utility model discloses a kind of Eccentrically swinging gear device, it includes outer barrel, wobble gear（3）, bent axle（6）And tooth rest（4）.Outer barrel is provided with by multiple pin teeth in inner circumferential with a constant pitch（21）The internal tooth of composition（2）；Wobble gear（3）On have at least one crankshaft hole（33）With multiple through holes（32）, have on excircle engaged with the internal tooth and gear ratio described in few 1 external tooth of internal tooth（31）；Bent axle（6）Insert each crankshaft hole（33）It is interior；Tooth rest（4）With the column in multiple insertion through holes（411）；Outer barrel inner circumferential is constituted provided with two groups of internal tooths, two groups of internal tooths are meshed with two wobble gears respectively.This configuration reduces the difficulty of processing of pin tooth, and make pin tooth stress equalization is unlikely to deform in the operating condition, reduce friction.In addition, two groups of pin teeth are meshed with two wobble gears respectively, it is to avoid the excessive defect of long pin-teeth centre is subject in the prior art shearing.
Description
Technical field
The utility model is related to gear drive, in particular to a kind of Eccentrically swinging gear device.
Background technology
During RV speed reducer structures are Eccentrically swinging gear device, the RV speed reducer structures of prior art, only one group pin
Tooth, i.e. single needle toothing.Pin tooth is elongated in single needle toothing, causes difficulty of processing big, product is difficult to meet required precision.Slow down
When machine is run, because pin tooth is elongated, when wobble gear is engaged with pin tooth, top or lower contacts with pin tooth, above and below pin tooth
Two parts Impact direction on the contrary, and institute's stress difference is big, cause motive force to lose；Meanwhile, the shearing force infringement pin inside pin tooth
Tooth, easily causes pin tooth to deform；In addition, pin tooth is obstructed around the rotation of itself axle, abrasion increase.
A kind of gear drive of CN201180062058.3 Invention Announces, gear drive includes internal gear, outer
Gear and bent axle.External gear is while engage one side relatively eccentric rotary with internal gear.Bent axle has with being formed in external gear
On the eccentric body that fastens of through hole.Bent axle is used to make external gear eccentric rotary.Inner peripheral surface and the periphery of eccentric body in through hole
Ball bearing is folded between face.The 1st groove of the outer ring equivalent to ball bearing is formed with the inner peripheral surface of through hole, in eccentric body
The 2nd groove of the inner ring equivalent to ball bearing is formed with outer peripheral face.
A kind of gear drive of CN201280041077.2 Invention Announces, geared system includes：Outer barrel；Multiple bent axles；
Bearing, support bent axle are so that it is rotated freely, and is linked and rotated relative to outer barrel with the rotation of bent axle；Multiple spur gears,
The position of support outer is extended in bent axle, is coaxially fixed with bent axle；Input gear, with being engaged in multiple straight-tooth
The gear part of wheel, and transmit rotary driving force to each spur gear；And packing ring mechanism, including it is arranged on the packing ring of carrier exterior.
Input gear is in the axially external position of bearing, by being engaged with multiple spur gears, so as to be restricted to not along input gear
Move radially, and axial movement not along input gear is limited to by the packing ring of packing ring mechanism.
A kind of Eccentrically swinging gear device of CN201410147100.7 Invention Announces, including：It is formed with the song of eccentric part
Axle；Support bent axle allows it to the crankshaft bearing of rotation；The inserting hole inserted with eccentric part, and the swing tooth with teeth portion
Wheel；The outer barrel of the interior alligator engaged with the teeth portion with wobble gear；And for installing crankshaft bearing, and based on eccentric
The swing of the wobble gear of the rotation in portion, produces the bearing of relative speed discrepancy between outer barrel.It is formed with bearing：Center
Through hole；Configure from the central through hole to the position being radially offset from and for installing the mounting recess of crankshaft bearing；And
Between central through hole and mounting recess in the opposite face of wobble gear and it can store the substrate side channel of lubricating oil.
Hereby it is possible to lubricate crankshaft bearing.
A kind of gear drive of CN201380047470.7 Invention Announces and its crankshaft structure body used, Yi Zhongchi
Wheel transmission device, it has internal gear, external gear, bent axle and supporting member.Bent axle is by a pair of the 1st cylinder roller bearing quilts
Double base is in supporting member.The eccentric body of bent axle engages by the 2nd cylinder roller bearing with the through hole of external gear.In the axle of bent axle
Upwards, the 1st annular construction member and the configuration of the 2nd annular construction member are in the position than the 1st cylinder roller bearing in the outer part.1st annular construction member
It is fixed on bent axle.The external diameter of 1st annular construction member is smaller than the external diameter of the 1st cylinder roller bearing.2nd annular construction member is fixed on supporting structure
Part.The internal diameter of 2nd annular construction member is smaller than the external diameter of the 1st cylinder roller bearing.
A kind of Eccentrically swinging gear device of CN201380048660.0 Invention Announces, Eccentrically swinging gear device tool
Have：Bent axle, it is formed with eccentric part；Crankshaft bearing, it is used to support bent axle and enable bent axle to rotate；Wobble gear, it has
There is the through hole inserted for eccentric part and there is external tooth；Outer barrel, it has the interior alligator for being used for engaging with the external tooth of wobble gear；
Tooth rest, it is used to install crankshaft bearing, the swing carried out using wobble gear along with the rotation of eccentric part, its with it is outer
Relative speed discrepancy is produced between cylinder.It is formed with tooth rest：Installation portion, it is used to install crankshaft bearing；Oil groove, it is in face
On to the face of wobble gear along installation portion periphery and lubricating oil can be stored.
Due to the limitation that pin tooth is rotated to wobble gear, single needle toothing is pointed to the bent axle through hole processing on wobble gear
It is required that high.If bent axle through hole mismachining tolerance is big on wobble gear, in crank rotation, one of wobble gear fails to rotate,
It can then cause another wobble gear to rotate to be obstructed, cause failure of gear transmission.
In view of this, the utility model is proposed.
The content of the invention
The purpose of this utility model is to provide a kind of Eccentrically swinging gear device, to solve pin tooth in existing reductor
The problem of elongated caused difficulty of processing is big, precision is low.
In order to solve the problems, such as said structure, the utility model provides following technical scheme：
A kind of Eccentrically swinging gear device, it includes outer barrel, wobble gear, bent axle and tooth rest.Bent axle, it is formed
There is eccentric part；Crankshaft bearing, it supports the bent axle and bent axle is rotated；Wobble gear, it, which has, supplies the eccentric part
The through hole of insertion and with teeth portion；Outer barrel, it has the internal tooth engaged with the teeth portion of the wobble gear；Tooth rest,
It is used to install the crankshaft bearing, the swing carried out using the wobble gear along with the rotation of the eccentric part,
It produces relative speed discrepancy between the outer barrel, and installation portion is formed with the tooth rest, and it is used to install the song
Axle bearing, outer barrel is made up of pin wheel housing, internal tooth, and pin wheel housing inner circumferential forms its multiple axial direction section for semicircular pin tooth
Two pin teeth placed side by side are installed, wobble gear is two in groove, each pin teeth groove, the first wobble gear first group of pin of correspondence
Tooth, the second wobble gear second group of pin tooth of correspondence.
Preferably, two wobble gear shapes are identical, 180 ° of phase shifting, are meshed respectively with two groups of internal tooths.
Preferably, the wobble gear is provided with three crankshaft holes.
Preferably, the crankshaft hole along radial direction it is equal from the central shaft of outer barrel with a distance from, it is and spaced apart in the circumferential direction
It is equidistant.
Preferably, through hole is additionally provided with wobble gear, the column for accommodating tooth rest, the through hole is along the circumferential direction
Alternately configured with crankshaft hole, and equidistant configuration spaced apart in the circumferential direction.
Preferably, the bent axle has two eccentric parts, the mutual phase of these eccentric parts in center in the axial direction at it
Stagger 180 °.
Preferably, described two eccentric parts are equidistant from the central shaft of bent axle.
The utility model forms crosspointer toothing by two groups of setting and the pin tooth of column distribution.It is long that the structure reduces pin tooth
Degree, reduces pin tooth difficulty of processing, and makes pin tooth stress equalization in the operating condition, is unlikely to deform, and reduces friction.In addition, two groups
Pin tooth is meshed with two wobble gears respectively, it is to avoid long pin-teeth centre is subject in the prior art shearing is excessive to be lacked
Fall into.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the profile of the utility model Eccentrically swinging gear device；
Fig. 2 is the schematic diagram of the pin wheel housing of the utility model Eccentrically swinging gear device；
Fig. 3 is the outer barrel schematic diagram of the utility model Eccentrically swinging gear device；
Fig. 4 is the single needle toothing schematic diagram of the utility model Eccentrically swinging gear device；
Fig. 5 is the utility model Eccentrically swinging gear device outer barrel schematic diagram；
Fig. 6 is the utility model Eccentrically swinging gear device wobble gear schematic diagram；
Fig. 7 is the schematic diagram of the bent axle of the utility model Eccentrically swinging gear device；
Description of reference numerals
Further clearly to illustrate the annexation between structure of the present utility model and each part, give following attached
Icon is remembered, and is illustrated.
Pin wheel housing 1；Pin teeth groove 11；Internal tooth 2；Pin tooth 21；Wobble gear 3；External tooth 31；Through hole 32；Crankshaft hole 33；Tooth rest
4；Output planetary frame 41；Column 411；Input planet carrier 42；Bearing 51；First tapered roller bearing 52；Second tapered roller
Bearing 53；Needle roller bearing 54；Bent axle 6；Eccentric part 61；Input gear 7.
By above-mentioned description of reference numerals, with reference to embodiment of the present utility model, it can be more clearly understood from and illustrate
The technical solution of the utility model.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent apparatus and method of some aspects being described in detail in appended claims, of the present utility model.
The term used in the utility model is the purpose only merely for description specific embodiment, and is not intended to be limiting this reality
With new." one kind ", " described " and "the" of singulative used in the utility model and appended claims
It is intended to include most forms, unless context clearly shows that other implications.It is also understood that term used herein " and/
Or " refer to and may be combined comprising one or more associated any or all of project listed.
It will be appreciated that though various information may be described using term first, second, third, etc. in the utility model,
But these information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not
In the case of departing from the utility model scope, the first information can also be referred to as the second information, similarly, and the second information can also
It is referred to as the first information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or
" when ... " or " in response to determining ".
The utility model will be described in detail by embodiment below.
Referring to Fig. 1, a kind of Eccentrically swinging gear device, it includes outer barrel, wobble gear, bent axle and tooth rest.It is bent
Axle, it is formed with eccentric part；Crankshaft bearing, it supports the bent axle and bent axle is rotated；Wobble gear, it is cycloid
Wheel, it has the through hole inserted for the eccentric part and has teeth portion；Outer barrel, it has the tooth with the wobble gear
The internal tooth of portion's engagement；Tooth rest, it is used to install the crankshaft bearing, using the wobble gear along with the eccentric part
The swing for rotating and carrying out, produces relative speed discrepancy between the outer barrel at it, installation is formed with the tooth rest
Portion, it is used to install the crankshaft bearing.
Outer barrel is made up of pin wheel housing 1, internal tooth 2.Referring to Fig. 2 ~ 5, the approximate cylinder shape of pin wheel housing 1, the inner circumferential of pin wheel housing 1 forms many
Its individual axial direction section is semicircular pin teeth groove 11, and these pin teeth groove 11 extend in the axial direction, and along the circumferential direction etc.
Distance separation, the distance is the tooth pitch of outer barrel.Internal tooth 2 includes installation two in multiple pin teeth 21, each pin teeth groove 11 and put side by side
The pin tooth 21 put, the i.e. number of pin tooth 21 is twice of the quantity of pin teeth groove 11, i.e., in axial direction arranged side by side in the inner circumferential of pin wheel housing 1
Provided with two groups of identical pin teeth, i.e. crosspointer toothing.Wobble gear is two, the first wobble gear first group of pin of correspondence
Tooth, the first wobble gear second group of pin tooth of correspondence.
Tooth pitch is the length of the circular arc line segment at the center of two pin teeth 23 of arbitrary neighborhood herein.Crosspointer toothing herein
In, the axial length of pin tooth 21 is the half of pin tine length in prior art single needle latch structure.Short pin-teeth can reduce the processing of pin tooth
Difficulty simultaneously ensures high accuracy.
In outer barrel, two wobble gears 3 annular in shape are contained side by side in the axial direction, referring to Fig. 6, the two swing tooth
The periphery of wheel forms cycloidal tooth profile, multiple external tooths 31 that specially peritrochoid tooth form is constituted respectively.Also, in the present embodiment
In, the number of teeth of the gear ratio single group internal tooth 2 of the external tooth 31 of wobble gear 3 is few 1, i.e. tooth difference is 1, can now provide high deceleration
Than, and processing charges can be reduced.When slowing down, two wobble gears 3 are engaged with two groups of internal tooths being set up in parallel 2 respectively.This
When, the middle part of pin tooth 21 engage with wobble gear external tooth, pin tooth about 21 two parts stress symmetrically, reduction motive force lose and
It is unlikely to deform；Meanwhile, pin tooth 21 with wobble gear 3 when engaging, around own axis, reduces friction.
It is formed with the crankshaft hole 33 of 3 insertions in the axial direction on two wobble gears 3, these crankshaft holes 33 are along radius side
To the central shaft from outer barrel 1 it is equal with a distance from, it is and spaced apart in the circumferential direction equidistant.There are three through holes on wobble gear 3
32, these through holes 32 are along the circumferential direction alternately configured with crankshaft hole 33, and equidistant configuration spaced apart in the circumferential direction.
Tooth rest 4 is installed in pin wheel housing 1, referring to Fig. 1, the tooth rest 4 is by configuring the axis direction in wobble gear 3
Output planetary frame 41, the input planet carrier 42 in two outsides are constituted；One end of input planet carrier 42 can load and unload ground by multiple bolts
It is connected to 3 columns 411 on output planetary frame 41.Also, column 411 extends in the axial direction, and keeps gap
Work is embedded in the through hole 32 of wobble gear 3.
A pair of bearings 51 is installed on tooth rest 4, specifically, this pair of bearings 51 is arranged on output planetary frame 41, defeated
Enter between the periphery of planet carrier 42 and the axis direction two ends inner circumferential of rotation pin wheel housing 1, limiting gear frame 4 is relative to pin wheel housing 1
In axial direction moved with circumferential direction.By these bearings 51, tooth rest 4 can rotatably outer support cylinder.The circumference of tooth rest 4
Direction separates 3 bent axles of equal angle configurations；The first circular cone on one end of its axis direction is embedded with outside these bent axles 6
Roller bearing 52 and the second tapered roller bearing 53 on the other end of its axis direction, this pair of taper roll bearings
Bent axle 6 is limited to move to axially and radially direction relative to tooth rest 4, and by tooth rest 4, i.e. output planetary frame 41, line of input
Carrier 42 is rotatably supported.
Referring to Fig. 7, bent axle 6 has the equidistant eccentric bias of two central shafts from bent axle 6 in its axis direction center
Portion 61,180 ° of the mutual phase shifting of these eccentric parts 61, be fixed in bent axle be located at a pair of tapered roller bearings 52,53 it
Between position.Work is embedded in the crankshaft hole 33 of wobble gear 3 eccentric part 61 of bent axle 6 respectively, and is provided between them
Needle roller bearing 54, thus, wobble gear 3 are supported on tooth rest 4 by bent axle 6, and allow to rotate against with bent axle 6.
Also, one end that the axis direction of each bent axle 6 is located at the outside of taper roll bearing 53 is fixed with input gear 7, these input teeth
Wheel 7 is engaged with the external tooth gear set on driving motor output shaft one end.
When motor works, when the torque of motor is transferred to input gear 7, bent axle 6 surrounds the central shaft of itself
Rotation.Now, the eccentric part 61 of bent axle 6 eccentric rotary in the crankshaft hole 33 of wobble gear 3.Now, along with eccentric part 61
Eccentric rotary, the one side of wobble gear 3 engages with outer barrel 1, while carrying out eccentric rotary around axis.The number of teeth of wobble gear 3 with
The number of teeth of outer barrel 1 is different.Therefore, in 3 eccentric rotary of wobble gear, correspondingly put with the number of teeth difference of wobble gear 3 and outer barrel 1
Moving gear 3 relatively rotates relative to outer barrel 1.As a result, the tooth rest 4 being supported to wobble gear 3 is relative to the phase of outer barrel 1
Rotate over the ground.In addition, the axis of tooth rest 4 and outer barrel 1 is identical with the axis of gear drive.
It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, may be used also
To carry out some improvement and modification to the present invention, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (7)
1. a kind of Eccentrically swinging gear device, it includes outer barrel, wobble gear, bent axle and tooth rest, bent axle, and it is formed with
Eccentric part；Crankshaft bearing, it supports the bent axle and bent axle is rotated；Wobble gear, it has inserts for the eccentric part
The through hole that enters and with teeth portion；Outer barrel, it has the internal tooth engaged with the teeth portion of the wobble gear；Tooth rest, its
For installing the crankshaft bearing, the swing carried out using the wobble gear along with the rotation of the eccentric part, at it
Relative speed discrepancy is produced between the outer barrel, installation portion is formed with the tooth rest, it is used to install the bent axle
Bearing, it is characterised in that：Outer barrel is by pin wheel housing（1）, internal tooth（2）Constitute, pin wheel housing（1）Inner circumferential forms its multiple axial direction and cut
Face is semicircular pin teeth groove（11）, each pin teeth groove（11）It is interior that two pin teeth placed side by side are installed（21）, wobble gear is
Two, the first wobble gear first group of pin tooth of correspondence, the second wobble gear second group of pin tooth of correspondence.
2. Eccentrically swinging gear device according to claim 1, it is characterised in that：Two wobble gear shapes are identical,
180 ° of phase shifting, is meshed respectively with two groups of internal tooths.
3. Eccentrically swinging gear device according to claim 1, it is characterised in that：The wobble gear is provided with three
Crankshaft hole（33）.
4. Eccentrically swinging gear device according to claim 1, it is characterised in that：The crankshaft hole（33）Along radius side
To the central shaft from outer barrel it is equal with a distance from, it is and spaced apart in the circumferential direction equidistant.
5. Eccentrically swinging gear device according to claim 1, it is characterised in that：Through hole is additionally provided with wobble gear
（32）, the column for accommodating tooth rest（411）, the through hole（32）Along the circumferential direction with crankshaft hole（33）Alternately match somebody with somebody
Put, and equidistant configuration spaced apart in the circumferential direction.
6. Eccentrically swinging gear device according to claim 1, it is characterised in that：The bent axle（6）At it along axis
Direction center has two eccentric parts（61）, 180 ° of the mutual phase shifting of these eccentric parts.
7. Eccentrically swinging gear device according to claim 6, it is characterised in that：Described two eccentric parts（61）From song
Axle（6）Central shaft it is equidistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118490.4U CN206478172U (en) | 2017-02-09 | 2017-02-09 | A kind of Eccentrically swinging gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118490.4U CN206478172U (en) | 2017-02-09 | 2017-02-09 | A kind of Eccentrically swinging gear device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206478172U true CN206478172U (en) | 2017-09-08 |
Family
ID=59749009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720118490.4U Active CN206478172U (en) | 2017-02-09 | 2017-02-09 | A kind of Eccentrically swinging gear device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206478172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654611A (en) * | 2017-10-25 | 2018-02-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Gear drive and there is its deceleration device |
-
2017
- 2017-02-09 CN CN201720118490.4U patent/CN206478172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654611A (en) * | 2017-10-25 | 2018-02-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Gear drive and there is its deceleration device |
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Effective date of registration: 20211229 Address after: 213164 Zone D, No. 98, LongQian Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Guomao precision transmission (Changzhou) Co.,Ltd. Address before: 242399 Ningyang West Road, Ningguo Economic and Technological Development Zone, Xuancheng City, Anhui Province Patentee before: ANHUI JULONG ROBOT DECELERATOR Co.,Ltd. |