CN109027146A - Symmetrical differential gearing drive transmission device - Google Patents
Symmetrical differential gearing drive transmission device Download PDFInfo
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- CN109027146A CN109027146A CN201810845545.0A CN201810845545A CN109027146A CN 109027146 A CN109027146 A CN 109027146A CN 201810845545 A CN201810845545 A CN 201810845545A CN 109027146 A CN109027146 A CN 109027146A
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- gear
- external gear
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- transmission device
- drive transmission
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
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Abstract
A kind of symmetrical differential gearing drive transmission device, including input shaft, first external gear, duplex external gear, first internal gear, second external gear and secondary annulus, returnning there are three being set on input shaft, three returnnings are arranged symmetrically relative to axis in 180 ° two-by-two, first external gear, duplex external gear, second external gear is divided in corresponding returnning periphery, duplex external gear is located on intermediate returnning, duplex external gear includes the first sub- gear and the second sub- gear, first external gear, second external gear is affixed along axial pin shaft by more, pin shaft hole is equipped on duplex external gear, pin shaft also extends through the pin shaft hole on duplex external gear, first internal gear is fixedly mounted on the inner wall of gearbox body, first internal gear and the first external gear, first sub- gear engages simultaneously, secondary annulus and the second sub- gear , the second external gear engage simultaneously, secondary annulus is coaxially affixed with output shaft.Have the advantages that transmission speed ratio is big, high-efficient, bearing capacity is strong.
Description
Technical field
The present invention relates to technical field of mechanical transmission, specifically, being related to a kind of symmetrical differential gearing drive transmission device.
Background technique
Conventional few-differential spider transmission mechanism, differs less inside and outside gear pair by one group of number of teeth and constitutes, to make mechanism
Stress equalization, improve the stability of mechanism, be meshed simultaneously with an internal gear using two external gears sometimes, level-one is few
The speed ratio of tooth difference transmission is usually >=20-100；When such as requiring speed ratio bigger, then need the axially transmission series connection of two-stage few teeth difference,
The power take-off mechanism of less teeth difference transmission generally uses pin type, floating disc, slide block type, or by internal gear output power,
When being driven using two-stage axial series gear with small teeth difference, the axial dimension that on the one hand will lead to transmission mechanism is very long, and structure is complicated
Change, the accuracy of manufacture and technique require to correspondingly increase, and manufacturing cost is also high；On the other hand, transmission effect will lead to using two-stage transmission
Rate decline, stability reduce, and the invisible increase of operating cost runs counter to national energy-saving, consumption reduction, emission reduction policy.
A kind of NN type duplicate gear transmission is referred in another books and paper, is introduced and is passed using a duplicate gear rotation
It is dynamic, the low-speed motion of driven gear is synchronized and is input to output shaft, but because unilateral stress is too big, it is impossible to keep gear operation flat
Surely, or in the two sides of duplicate gear balance weight is installed respectively so as to balancing unidirectional force, still, duplicate gear is engaged with internal gear
When, internal gear still cannot change the internal gear of single load bearing defect, especially output power, if load running is equivalent to
Wheel rotation is stirred with unilateral power, to make eccentric shaft that radial unilateral fatigue easily occur, so as to shorten complete machine service life.
Up to now, books terminate in always theory for the introduction of this section of knowledge, do not there is the scheme for solving above-mentioned problem.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of symmetrical differential gearing drive transmission device, including input shaft, first
External gear, duplex external gear, the first internal gear, the second external gear and secondary annulus are set on input shaft there are three returnning,
And three returnnings are arranged symmetrically relative to axis in 180 ° two-by-two, the first external gear, duplex external gear, the second external gear point
The periphery of corresponding returnning is not mounted on by bearing, and duplex external gear is arranged on intermediate returnning, duplex
External gear includes the first sub- gear and the second sub- gear, and the parameter of the first external gear is identical as the first sub- gear, the second external gear
Parameter it is identical as the second sub- gear, the first external gear, the second external gear are fixedly connected by more along axial pin shaft, and
And pin shaft hole is provided on duplex external gear, pin shaft also extends through the pin shaft hole on duplex external gear, the fixed peace of the first internal gear
On the inner wall of gearbox body, the first internal gear engages simultaneously with the first external gear, the first sub- gear, secondary annulus and
Two sub- gears, the second external gear engage simultaneously, and secondary annulus is coaxially fixedly connected with output shaft, wherein input shaft is as dynamic
Power input terminal, output shaft is as power output end, and symmetrical differential gearing drive transmission device is deceleration device, and output shaft is as dynamic
Power input terminal, for input shaft as power output end, symmetrical differential gearing drive transmission device is speeder.
Preferably, the pin shaft is arranged circumferentially along the circle of the first external gear, and accordingly, pin shaft hole is also along duplex external tooth
The circle of wheel is arranged circumferentially.
Preferably, secondary annulus is cantilevered, or is mounted on gearbox body by bearing.
Preferably, the end of input shaft is supported in the inner hole of output shaft by bearing.
Preferably, the returnning of the first external gear installation site includes eccentric bushing, and the eccentric bushing is connected by key peace
On input shaft, returnning is formed.
Preferably, the key for being keyed use is one of flat key, rectangular spline or involute spline.
Preferably, each bearing is rolling bearings or plain bearings.
Preferably, the first internal gear and the first external gear, the first sub- gear, which exist, is no more than 8 teeth number differences；In second
Gear and the second external gear, the second sub- gear, which exist, is no more than 8 teeth number differences.
Symmetrical differential gearing drive transmission device of the invention separately constitutes two groups by duplicate gear and two external gears
It is mutually in 180 ° of symmetrical Eccentric Gear-drive pair relative to central principal axis line X-X, internal gear stress equalization in transmission process is realized
The gear that the advantages that transmission speed ratio is big, high-efficient, bearing capacity is strong, stability is good, noise is small is integrated in one, these are excellent
Gesture is not available for general gear with small teeth difference transmission mechanism, especially speed ratio is big, under the demanding operating condition of operational reliability
In application, having clearly advantageous characteristic, while there is practical operability, application prospect is boundless.
Detailed description of the invention
By the way that embodiment is described in conjunction with following accompanying drawings, features described above of the invention and technological merit will become
More understands and be readily appreciated that.
Fig. 1 is the cross-sectional view for indicating the symmetrical differential gearing drive transmission device of the embodiment of the present invention；
Fig. 2 is to indicate that the symmetrical differential gearing transmission gear shift using bearing installation secondary annulus of the embodiment of the present invention fills
The cross-sectional view set.
Specific embodiment
The embodiment of symmetrical differential gearing drive transmission device of the present invention described below with reference to the accompanying drawings.Ability
The those of ordinary skill in domain will recognize, without departing from the spirit and scope of the present invention, can use various differences
Mode or combinations thereof described embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, without
It is for limiting scope of protection of the claims.In addition, in the present specification, attached drawing is drawn not in scale, and identical attached
Icon note indicates identical part.
Fig. 1 is the schematic diagram of the symmetrical differential gearing drive transmission device of the present embodiment, as shown in Figure 1, speed change gear packet
Include input shaft 1, eccentric bushing 3, the first external gear 5, duplex external gear 10, the first internal gear 7, the second external gear 13 and the second internal tooth
Wheel 12.
The main shaft of input shaft 1 is X-X, set on input shaft 1 there are two relative to main shaft X-X in 180 ° symmetrical second
Returnning 200 and third returnning 300, eccentric bushing 3 are mounted on one end of input shaft 1, structure using the connection of the first connecting key 2
It is equal with the second returnning 200 preset on input shaft 1, the eccentricity of third returnning 300 at the first returnning 100
For a, and it is arranged symmetrically two-by-two relative to main shaft X-X in 180 °.It is of course also possible to not have to eccentric bushing, but directly inputting
It is mutually in 180 ° of symmetrical returnnings that three are arranged on axis.
Duplex external gear 10 is mounted on the periphery of the second returnning 200 of the centre of input shaft 1 by second bearing 11.
Duplex external gear 10 includes the first sub- gear 101 and the second sub- gear 102.The parameter of first external gear 5 and the first sub- gear 101
Identical, the first external gear 5 is mounted on the excircle of eccentric bushing 3 by first bearing 4.Second external gear 13 passes through third
Bearing 16 is sleeved on the periphery of the third returnning 300 of 1 other end of input shaft, parameter and the second complete phase of sub- gear 102
Together.First external gear 5, the second external gear 13 are fixedly connected by more pin shafts 6 and are operated synchronously.Specifically, pin shaft 6 is worn along axial direction
The both ends for crossing the first external gear 5 and the second external gear 13 are fixed respectively, for example, the side that can be fastened by boss joint bolt
Formula.Pin shaft hole 103 is provided on duplex external gear 10, pin shaft 6 is each passed through the pin shaft hole 103 on duplex external gear 10.The
One internal gear 7 is fixedly mounted on the inner wall of gearbox body 9 by the second connecting key 8, to limit the rotation of the first internal gear 7.
First internal gear 7 engages simultaneously with the first external gear 5, the first sub- gear 101, secondary annulus 12 and the second sub- external gear 102,
Second external gear 13 engages simultaneously, and secondary annulus 12 is coaxially fixedly connected with axis 15.
It is illustrated below with power from input shaft 1 is incoming, power is transmitted to input shaft 1, and input shaft 1 drives four external tooths
The compound motion of crop rotation rotation and ring pendulum, specifically, the first external gear 5, the second external gear 13, the first sub- gear 101 and second
Sub- gear 102 does the composite sports of rotation and ring pendulum simultaneously.Wherein, the movement of the first external gear 5 and the first sub- gear 101 is
Symmetrical relative to axis X-X, similarly, the movement of the second sub- external gear 102, the second external gear 13 is also relative to axis X-
X is symmetrical.First external gear 5, the first sub- gear 101 are engaged with the first internal gear 7, because the first internal gear 7 is fixed peace
Dress, so the first external gear 5, the first sub- gear 101 can do the compound motion of rotation and ring pendulum, the first external gear 5, the first sub- tooth
Wheel 101 rotates on one side, constantly disengages to reaccees again on one side and does continuous movement, and the first external gear 5, the first sub- gear 101 are just complete
At the compound motion for continuously equidistantly translating (i.e. ring pendulum) around the rotary motion of own axes and relative to axis X-X.
Similarly, due to the connection of pin shaft 6, the second external gear 13, the second sub- gear 102 are also in doing rotation and ring is put
Composite sports.Second sub- gear 102, the second external gear 13 become the driving wheel of secondary annulus 12 again, to make and the
Two internal gears 12 are fixed as output shaft 15 together and obtain low-down revolving speed.The symmetrical differential gear transmission mechanism of the present invention is realized
When speedup works, power is inputted from output shaft 5, and input shaft 1 is that power output shaft will obtain higher rotation speed.If with output shaft 15
For input shaft, input shaft 1 is output shaft, then the speed change gear is speeder.
In one alternate embodiment, the pin shaft 6 is arranged circumferentially along the circle of the first internal gear 5, accordingly, pin shaft
Circle of the hole also along duplex external gear is arranged circumferentially.
In one alternate embodiment, can cause to jump tooth, the stability of operating and less reliable in the process of running,
It may cause transmission failure.As shown in Fig. 2, the work of 5th bearing 17 can be added between secondary annulus 12 and gearbox body 9
For the supporting member of secondary annulus 12, radial displacement can not occur when rotating for secondary annulus 12, the stability of operating and can
It is guaranteed by property.Certainly, secondary annulus 12 also can be made cantilevered, i.e. secondary annulus 12 only has one end branch along axial
Support.
It in one alternate embodiment, is stable drive, the end of input shaft 1 can be supported on defeated by fourth bearing 16
In the inner hole of shaft 15.
In one alternate embodiment, each bearing described above can be rolling bearings or plain bearings.
In one alternate embodiment, first connecting key 2, the second connecting key 8 can be flat key, rectangular spline or
Person's involute spline.
In one alternate embodiment, the first internal gear and the first external gear 5, the first sub- gear 101, which exist, is no more than 8
A teeth number difference；Secondary annulus 12 and the second external gear 13, the second sub- gear 102, which exist, is no more than 8 teeth number differences.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of symmetrical differential gearing drive transmission device, which is characterized in that including input shaft, the first external gear, duplex external tooth
Wheel, the first internal gear, the second external gear and secondary annulus,
Returnning there are three being set on input shaft, and three returnnings are arranged symmetrically relative to axis in 180 ° two-by-two,
First external gear, duplex external gear, the second external gear pass through the periphery that bearing is mounted on corresponding returnning respectively, and
Duplex external gear is arranged on intermediate returnning, and duplex external gear includes the first sub- gear and the second sub- gear, outside first
The parameter of gear is identical as the first sub- gear, and the parameter of the second external gear is identical as the second sub- gear,
First external gear, the second external gear are fixedly connected by more along axial pin shaft, also, are arranged on duplex external gear
There is pin shaft hole, pin shaft also extends through the pin shaft hole on duplex external gear, and the first internal gear is fixedly mounted on the inner wall of gearbox body,
First internal gear engages simultaneously with the first external gear, the first sub- gear, and secondary annulus and the second sub- gear, the second external gear are same
When engage, secondary annulus is coaxially fixedly connected with output shaft, wherein
Input shaft is as power intake, and for output shaft as power output end, symmetrical differential gearing drive transmission device is reduction of speed
Device,
Output shaft is as power intake, and for input shaft as power output end, symmetrical differential gearing drive transmission device is speedup
Device.
2. symmetrical differential gearing drive transmission device as described in claim 1, which is characterized in that
The pin shaft is arranged circumferentially along the circle of the first external gear, accordingly, pin shaft hole also along the circumference of duplex external gear to
It is evenly arranged.
3. symmetrical differential gearing drive transmission device as described in claim 1, which is characterized in that
Secondary annulus is cantilevered, or is mounted on gearbox body by bearing.
4. symmetrical differential gearing drive transmission device as claimed in claim 3, which is characterized in that
The end of input shaft is supported in the inner hole of output shaft by bearing.
5. symmetrical differential gearing drive transmission device as described in claim 1, which is characterized in that the first external gear installation site
Returnning include eccentric bushing, the eccentric bushing, which is connected by key, to be mounted on input shaft, formed returnning.
6. symmetrical differential gearing drive transmission device as claimed in claim 5, which is characterized in that
The key that key connection uses is one of flat key, rectangular spline or involute spline.
7. symmetrical differential gearing drive transmission device as claimed in claim 4, which is characterized in that
Each bearing is rolling bearings or plain bearings.
8. symmetrical differential gearing drive transmission device as claimed in claim 4, which is characterized in that
First internal gear and the first external gear, the first sub- gear, which exist, is no more than 8 teeth number differences；Outside secondary annulus and second
Gear, the second sub- gear, which exist, is no more than 8 teeth number differences.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845545.0A CN109027146B (en) | 2018-07-27 | 2018-07-27 | Symmetrical differential gear transmission speed changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845545.0A CN109027146B (en) | 2018-07-27 | 2018-07-27 | Symmetrical differential gear transmission speed changing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027146A true CN109027146A (en) | 2018-12-18 |
| CN109027146B CN109027146B (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845545.0A Active CN109027146B (en) | 2018-07-27 | 2018-07-27 | Symmetrical differential gear transmission speed changing device |
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| Country | Link |
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| CN (1) | CN109027146B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039883A (en) * | 1988-07-23 | 1990-02-21 | 杨天博 | Composition little gear differential transmission mechanism |
| CN2097321U (en) * | 1990-12-20 | 1992-02-26 | 马鞍山市传动机械厂 | Small tooth difference reducing gears |
| CN2116809U (en) * | 1991-06-03 | 1992-09-23 | 姜光圻 | Planetary differential gear speed reducer |
| CN1161418A (en) * | 1995-12-29 | 1997-10-08 | 罗钟五 | Reduction gear |
| EP1257750A1 (en) * | 2000-02-22 | 2002-11-20 | Scandrive Control AB | Eccentric gear |
| US7303497B1 (en) * | 2002-03-11 | 2007-12-04 | Insight3D, Inc. | Dual-input differential planetary gear transmission |
| CN200996442Y (en) * | 2006-12-25 | 2007-12-26 | 南京高速齿轮制造有限公司 | Conjugated double-outlet reversed gearbox |
| CN201293075Y (en) * | 2008-11-10 | 2009-08-19 | 华北电力大学 | Stepless governor of differential gear train |
| CN106195209A (en) * | 2016-08-24 | 2016-12-07 | 吴国章 | Novel robot special reduction gear |
-
2018
- 2018-07-27 CN CN201810845545.0A patent/CN109027146B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039883A (en) * | 1988-07-23 | 1990-02-21 | 杨天博 | Composition little gear differential transmission mechanism |
| CN2097321U (en) * | 1990-12-20 | 1992-02-26 | 马鞍山市传动机械厂 | Small tooth difference reducing gears |
| CN2116809U (en) * | 1991-06-03 | 1992-09-23 | 姜光圻 | Planetary differential gear speed reducer |
| CN1161418A (en) * | 1995-12-29 | 1997-10-08 | 罗钟五 | Reduction gear |
| EP1257750A1 (en) * | 2000-02-22 | 2002-11-20 | Scandrive Control AB | Eccentric gear |
| US7303497B1 (en) * | 2002-03-11 | 2007-12-04 | Insight3D, Inc. | Dual-input differential planetary gear transmission |
| CN200996442Y (en) * | 2006-12-25 | 2007-12-26 | 南京高速齿轮制造有限公司 | Conjugated double-outlet reversed gearbox |
| CN201293075Y (en) * | 2008-11-10 | 2009-08-19 | 华北电力大学 | Stepless governor of differential gear train |
| CN106195209A (en) * | 2016-08-24 | 2016-12-07 | 吴国章 | Novel robot special reduction gear |
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| Publication number | Publication date |
|---|---|
| CN109027146B (en) | 2020-06-12 |
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