CN108253111A - A kind of deceleration differential of planetary gear type - Google Patents
A kind of deceleration differential of planetary gear type Download PDFInfo
- Publication number
- CN108253111A CN108253111A CN201711446786.XA CN201711446786A CN108253111A CN 108253111 A CN108253111 A CN 108253111A CN 201711446786 A CN201711446786 A CN 201711446786A CN 108253111 A CN108253111 A CN 108253111A
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- CN
- China
- Prior art keywords
- gear
- planetary gear
- differential
- drive axle
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
-
- 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
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
Abstract
The deceleration differential of the planetary gear type of the present invention includes drive shaft, planetary gear train and differential mechanism, planetary gear train is connect with differential mechanism, drive shaft is hollow shaft, the main rotating shaft of drive shaft, planetary gear train and differential mechanism is coaxial, first drive axle of vehicle is connect across drive shaft with planetary gear train, second drive axle of vehicle is plugged in differential mechanism, and the first drive axle and the second drive axle are coaxially disposed, the first drive axle and the relatively independent movement of drive shaft；Planetary gear train drives differential mechanism movement, and differential mechanism drives the first drive axle and the movement of the second drive axle；The electric power rotating speed of drive shaft is transmitted to differential casing after slowing down by planetary gear train, after differential mechanism differential, is transmitted to first, second gear, realizes that the first second gear realizes differential automatically while output torque；Vehicle axles and the planetary gear carrier central shaft hole of drive shaft, speed reducer are co-axially mounted, compact-sized, and technique simplifies, and installation operation is convenient.
Description
Technical field
The present invention relates to differential art field more particularly to a kind of deceleration differentials of planetary gear type.
Background technology
Turn inside diameter travel or on uneven road surface when driving, left and right wheels need to be made by differential design with different rotating speeds
It rolls, to ensure that both sides driving wheel makees PURE ROLLING, the effect of differential mechanism is to adjust the speed discrepancy of left and right wheels；
Torque output is realized through reduction box, reduction box is connected to vehicle wheel after vehicular electric machine power output in the prior art
Axis, still further sets differential mechanism to adjust the speed discrepancy of left and right wheels, and motor driving shaft, reduction box, differential mechanism respectively have rotation master
Axis, each live spindle are not same axises with vehicle axles, and connection structure is complicated, and bulky, occupied space is more, installation operation
It is cumbersome.
Invention content
The present invention provides one kind can realize differential automatically while output torque, compact-sized, small, installation behaviour
Make the deceleration differential of convenient planetary gear type；Including drive shaft, planetary gear train and differential mechanism, the planetary gear train with it is described
Differential mechanism connects, and the drive shaft is hollow shaft, and the main rotating shaft of the drive shaft, the planetary gear train and the differential mechanism is same
Axis, the first drive axle of vehicle are connect across drive shaft with planetary gear train, and the second drive axle of vehicle is plugged in differential mechanism, institute
It states the first drive axle to be coaxially disposed with second drive axle, first drive axle and the relatively independent movement of the drive shaft；
The planetary gear train drives the differential mechanism movement, and the differential mechanism drives first drive axle and second drive axle
Movement.
As a further improvement, the planetary gear train includes gear ring, first gear stent group, second gear stent group；Institute
First gear stent group is stated to include first gear stent and be sheathed on the first sun gear and several first of first gear stent
Planetary gear, every one first planetary gear are connected with the gear ring；The second gear stent group include second gear stent,
Second sun gear and several second planetary gears, every one second planetary gear are connected with the gear ring；The second gear stent
It is connected with second sun gear.
As a further improvement, the differential mechanism includes first gear, second gear, cross axle, several the third line star-wheels
And differential casing；The first gear, the second gear, the cross axle, several the third line star-wheels are placed in described
In differential carrier body；The differential casing is connected with the second gear stent；
The first gear is connected with first drive axle, and the second gear is connected with second drive axle
It connects；Each axle portion of the cross axle is arranged there are one the third line star-wheel；Each the third line star-wheel is respectively with described
One gear, the second gear are meshed.
As a further improvement, the first gear, the second gear, the first planetary gear, the second planetary gear, the third line
Star-wheel uses bevel gear.
As a further improvement, the drive shaft includes first connecting portion, the first connecting portion and first sun
Wheel is connected.
As a further improvement, the first connecting portion is external splines structure, first sun gear is the internal spline sun
Wheel.
Compared to having the beneficial effect that for prior art, the deceleration differential of planetary gear type, motor output is moved
Power rotating speed is transmitted to differential casing after slowing down by planetary gear train, after differential mechanism differential, is transmitted to first, second tooth
Wheel realizes that first, second gear output speed is inconsistent, realizes that first gear, second gear are automatic while output torque
It realizes differential, meets the needs of automobile both sides vehicle wheel rotational speed is different；Drive shaft vehicle axles and motor hollow drive shaft, planetary gear
The first gear stent group of system, the central shaft hole of second gear stent group are co-axially mounted, compact-sized, small, and technique simplifies,
Installation operation is convenient.
Description of the drawings
Fig. 1 is cross-sectional view of the present invention along drive shaft axial direction.
Main element symbol
Drive shaft 1
First drive axle 19
Second drive axle 20
Differential casing 14
Second gear stent 7
First gear stent 5
First sun gear 2
Second sun gear 13
First gear 15
Second gear 16
The third line star-wheel 18
First planetary gear 4
Second planetary gear 6
Gear ring 3
Cross axle 17
Specific embodiment
Purpose, technical scheme and advantage to make embodiment of the present invention are clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is the embodiment of a part of embodiment of the present invention rather than whole.Embodiment in the present invention, this field are general
The every other embodiment that logical technical staff is obtained without creative efforts, belongs to protection of the present invention
Range.Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement guarantor below
The scope of the present invention of shield, but it is merely representative of the selected embodiment of the present invention.Embodiment in the present invention, this field are general
The every other embodiment that logical technical staff is obtained without creative efforts, belongs to protection of the present invention
Range.
In the description of the present invention, it is to be understood that the orientation or position relationship of the instructions such as term " on ", " under " are attached
Orientation or position relationship shown in figure are for only for ease of the description present invention and simplify description rather than instruction or imply signified
Equipment or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention
Limitation.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig. 1, the present embodiment provides a kind of deceleration differential of planetary gear type, including drive shaft 1, planetary gear train
And differential mechanism, planetary gear train are connect with differential mechanism, drive shaft 1 be hollow shaft, the main rotation of drive shaft 1, planetary gear train and differential mechanism
Shaft is coaxial, and the first drive axle 19 of vehicle is connect across drive shaft 1 with planetary gear train, and the second drive axle 20 of vehicle is plugged in
In differential mechanism, the first drive axle 19 is coaxially disposed with the second drive axle 20, the first drive axle 19 and 1 relatively independent fortune of drive shaft
It is dynamic；Planetary gear train drives differential mechanism movement, and differential mechanism drives the first drive axle 19 and the second drive axle 20 to move.Drive shaft 1,
First drive axle 19, the second drive axle 20, planetary gear train coaxial arrangement so that the torque that drive shaft 1 is transmitted passes through planetary gear train
After deceleration, first, second gear 16 output torque, and pass through differential mechanism differential simultaneously is realized, realize first gear 15 and the
Two gears 16 realize differential automatically while output torque.Drive shaft 1 includes first connecting portion, and first connecting portion and first is too
Sun wheel 2 is connected；First connecting portion is external splines structure, and the first sun gear 2 is internal spline sun gear.
Planetary gear train includes gear ring 3,5 groups of 15 stent of first gear, 7 groups of 16 stent of second gear；15 stent 5 of first gear
Group includes 15 stent 5 of first gear and is sheathed on the first sun gear 2 of 15 stent 5 of first gear and several first planetary gears 4,
Every one first planetary gear is connected with gear ring 3；7 groups of 16 stent of second gear includes 16 stent 7 of second gear, second sun
Wheel 13 and several second planetary gears 6, every one second planetary gear 6 are connected with gear ring 3；16 stent 7 of second gear and second is too
Sun wheel 13 is connected.
In the present embodiment, 3 remains stationary state of gear ring, in the transmittance process of gear stand group, sun gear drives row
Star wheel movement makes planetary gear be rotated in gear ring 3, and planetary gear drives gear stand rotation, realizes the transmission of torque.
Differential mechanism includes first gear 15, second gear 16, cross axle 17, several the third line star-wheels 18 and differential carrier
Body 14；First gear 15, second gear 16, cross axle 17, several the third line star-wheels 18 are placed in differential casing 14；Differential
Device housing 14 is connected with 16 stent 7 of second gear；First gear 15 is connected with the first drive axle 19, second gear 16 and
Two drive axles 20 are connected；Each axle portion of cross axle 17 is arranged there are one the third line star-wheel 18；Each the third line star-wheel 18
It is meshed respectively with first gear 15, second gear 16.
The central shaft hole of cross axle 17 and 19 second drive axle 20 of the first drive axle be coaxially disposed and cross axle 17 at least
Two axle portions are connected with differential casing 14；In torque transmittance process, because of differential casing 14 and 16 stent 7 of second gear
It is fixedly connected, when 16 stent 7 of second gear is rotated around its body central point, differential casing 14 rotates together with, and by torque
First gear 15 and second gear 16 are transferred to by the third line star-wheel 18；First gear 15, second gear 16 are internal spline
Bevel gear, female spline portion do not connect with the one end fits of the first drive axle 19, the second drive axle 20 so that drive axle rotate,
Transmit torque.And select bevel gear that can further reduce differential mechanism volume；Differential casing 1414 is by screw with slowing down
The planetary gear carrier 7 of machine is fixedly connected, and connection is reliable, and stability is good.
It is transmitted in the present embodiment for convenience of torque, the first planetary gear 4, the second planetary gear 6, the third line star-wheel 18 use
Bevel gear.
Drive shaft 1 includes first connecting portion, and first connecting portion is connected with the first sun gear 2；
Referring to Fig. 1, the present embodiment operation principle, drive shaft 11 transfers torque to the first sun gear 2, the first sun gear
2 transfer torque to the first planetary gear 4, and the first planetary gear 4 transfers torque to 15 stent 5 of first gear, first gear 15
Frame 5 transfers torque to the second sun gear 13, and the second sun gear 13 transfers torque to the second planetary gear 6, the second planetary gear
16 stent 7 of second gear is transferred torque to, planetary gear train (reduction box) transfers torque to difference by 16 stent 7 of second gear
Fast device housing 14, differential casing 14 transfer torque to differential mechanism first gear by the third line star-wheel 18 and cross axle 17
15 and second gear 16, first gear 15 is exported from speed reducer opposite side and is turned round from speed reducer side output torque, second gear 16
Square.
After motor output speeds are slowed down by planetary gear train, differential casing 14 after differential mechanism differential, is transmitted to
One gear 15, second gear 16 realize that first gear 15,16 output speed of second gear are inconsistent, meet two sidecar wheel of automobile
The different demand of rotating speed.
Planetary gear speed-reduction differential mechanism after torque is slowed down by planetary gear train, realizes that first gear 15, second gear 16 are same
When output torque, and pass through differential mechanism differential, realize that first gear 15 and second gear 16 are automatic while output torque
Realize differential.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention.
Claims (6)
1. a kind of deceleration differential of planetary gear type, which is characterized in that described including drive shaft, planetary gear train and differential mechanism
Planetary gear train is connect with the differential mechanism, the drive shaft be hollow shaft, the drive shaft, the planetary gear train and the differential
The main rotating shaft of device is coaxial, and the first drive axle of vehicle is connect across drive shaft with planetary gear train, and the second drive axle of vehicle is inserted
It is located in differential mechanism, first drive axle is coaxially disposed with second drive axle, first drive axle and the driving
The relatively independent movement of axis；The planetary gear train drives the differential mechanism movement, the differential mechanism drive first drive axle with
And the second drive axle movement.
2. the deceleration differential of planetary gear type according to claim 1, which is characterized in that the planetary gear train includes tooth
Circle, first gear stent group, second gear stent group；The first gear stent group includes first gear stent and is sheathed on
First sun gear of first gear stent and several first planetary gears, every one first planetary gear are connected with the gear ring；
The second gear stent group includes second gear stent, the second sun gear and several second planetary gears, every one second planetary gear
It is connected with the gear ring；The second gear stent is connected with second sun gear.
3. the deceleration differential of planetary gear type according to claim 2, it is characterised in that：The differential mechanism includes the first tooth
Wheel, second gear, cross axle, several the third line star-wheels and differential casing；The first gear, the second gear, institute
State cross axle, several the third line star-wheels are placed in the differential carrier body；The differential casing and the second gear branch
Frame is connected；
The first gear is connected with first drive axle, and the second gear is connected with second drive axle；Institute
The each axle portion for stating cross axle is arranged there are one the third line star-wheel；Each the third line star-wheel respectively with first tooth
Wheel, the second gear are meshed.
4. the deceleration differential of planetary gear type according to claim 3, it is characterised in that：The first gear, described
Two gears, the first planetary gear, the second planetary gear, the third line star-wheel use bevel gear.
5. the deceleration differential of planetary gear type according to claim 2, which is characterized in that the drive shaft includes first
Connecting portion, the first connecting portion are connected with first sun gear.
6. the deceleration differential of planetary gear type according to claim 5, which is characterized in that the first connecting portion is outer
Spline structure, first sun gear are internal spline sun gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446786.XA CN108253111A (en) | 2017-12-27 | 2017-12-27 | A kind of deceleration differential of planetary gear type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446786.XA CN108253111A (en) | 2017-12-27 | 2017-12-27 | A kind of deceleration differential of planetary gear type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108253111A true CN108253111A (en) | 2018-07-06 |
Family
ID=62724351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711446786.XA Pending CN108253111A (en) | 2017-12-27 | 2017-12-27 | A kind of deceleration differential of planetary gear type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108253111A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110871678A (en) * | 2019-11-15 | 2020-03-10 | 武汉理工大学 | Electric drive axle speed reducer |
| CN112810434A (en) * | 2020-07-19 | 2021-05-18 | 清研华科新能源研究院(南京)有限公司 | Coaxial electric drive axle based on two-stage planet row |
Citations (6)
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| JP2006298273A (en) * | 2005-04-22 | 2006-11-02 | Exedy Corp | Drive unit for vehicle |
| US20120058855A1 (en) * | 2010-07-14 | 2012-03-08 | Sten Erik | Axle assembly with torque distribution drive mechanism |
| CN103832211A (en) * | 2014-02-25 | 2014-06-04 | 武汉新能车桥技术发展有限公司 | Centrally-arranged motor drive axle |
| CN205631969U (en) * | 2016-05-27 | 2016-10-12 | 长城汽车股份有限公司 | Drive axle and vehicle of vehicle |
| CN106555855A (en) * | 2015-09-25 | 2017-04-05 | 比亚迪股份有限公司 | Differential mechanism, power drive system and vehicle |
| CN207830500U (en) * | 2017-12-27 | 2018-09-07 | 孝感孝航机电科技有限公司 | A kind of deceleration differential of planetary gear type |
-
2017
- 2017-12-27 CN CN201711446786.XA patent/CN108253111A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006298273A (en) * | 2005-04-22 | 2006-11-02 | Exedy Corp | Drive unit for vehicle |
| US20120058855A1 (en) * | 2010-07-14 | 2012-03-08 | Sten Erik | Axle assembly with torque distribution drive mechanism |
| CN103832211A (en) * | 2014-02-25 | 2014-06-04 | 武汉新能车桥技术发展有限公司 | Centrally-arranged motor drive axle |
| CN106555855A (en) * | 2015-09-25 | 2017-04-05 | 比亚迪股份有限公司 | Differential mechanism, power drive system and vehicle |
| CN205631969U (en) * | 2016-05-27 | 2016-10-12 | 长城汽车股份有限公司 | Drive axle and vehicle of vehicle |
| CN207830500U (en) * | 2017-12-27 | 2018-09-07 | 孝感孝航机电科技有限公司 | A kind of deceleration differential of planetary gear type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110871678A (en) * | 2019-11-15 | 2020-03-10 | 武汉理工大学 | Electric drive axle speed reducer |
| CN112810434A (en) * | 2020-07-19 | 2021-05-18 | 清研华科新能源研究院(南京)有限公司 | Coaxial electric drive axle based on two-stage planet row |
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