CN109578524A - Wheel motor drive device single-stage helical teeth planetary reduction gear - Google Patents
Wheel motor drive device single-stage helical teeth planetary reduction gear Download PDFInfo
- Publication number
- CN109578524A CN109578524A CN201811509496.XA CN201811509496A CN109578524A CN 109578524 A CN109578524 A CN 109578524A CN 201811509496 A CN201811509496 A CN 201811509496A CN 109578524 A CN109578524 A CN 109578524A
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- China
- Prior art keywords
- gear
- planetary
- ring
- drive device
- motor drive
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention belongs to technical field of power transmission, more particularly to a kind of wheel motor drive device single-stage helical teeth planetary reduction gear, it uses interior external toothing duplex to arrange, it include: sun gear, the first planetary gear, the second planetary gear, planet carrier and gear ring, wherein, sun gear input, planet carrier output, gear ring braking.Sun gear is fixedly connected with input shaft, first planetary gear and the second planetary gear set are at duplicate gear, the first planetary gear far from motor is engaged with sun gear, and the second planetary gear close to motor is engaged with ring gear, and ring gear, which is engaged with external gear and is fixedly attached on electric machine casing, realizes braking.The present invention passes through external toothing duplex arrangement office in optimizing, the transmission ratio of single-stage planetary speed reducer is improved under the premise of meeting service life and geometrical boundary constraint requirements, in addition, the retarder uses involute helical gear, floating gear ring and axial modification technology, is conducive to reduce vibration, noise and improves transmission efficiency.
Description
Technical field
The invention belongs to technical field of power transmission, and in particular to a kind of wheel motor drive device single-stage helical teeth planet
Retarder.
Background technique
Power, transmission and brake apparatus are integrated into wheel hub by wheel motor drive device, comprising: motor, planetary reduction gear
Device, tire, wheel hub and brake etc., wherein motor speed and torque are transmitted to vehicle after reduction of speed torque increase by planetary reduction gear
Wheel, to meet the requirement of vehicle mobility.To reduce the quality of wheel motor drive device, improving the power density of motor,
Motor torque need to be reduced.Therefore, under the high compact and long-life constraint condition, the reduction ratio of retarder should be increased as far as possible.Mesh
Before, wheel motor drive device mostly uses single-stage planetary speed reducer, compound epicyclic reduction gear and cycloidal-pin wheel planetary with retarder
Retarder.Wherein, single-stage planetary speed reducer structure is simple, but slow down smaller, identical speed and radius of wheel, motor speed
Low, power of motor density can not be promoted effectively, in addition, under same reduction ratio and the requirement in service life, the diameter of single-stage planetary speed reducer
It is bigger to size.The deceleration of compound epicyclic reduction gear is bigger, but structure is complicated, and the axial space needed is bigger, and is processed into
This is higher.Cycloidal pinwheel planetary gear speed reducer can get very high transmission ratio and compact-sized, but transmission efficiency is lower, to processing work
The requirement of skill and cost is high.
It to sum up, is to realize although wheel motor drive device has largely simplified the power drive system of vehicle
The key technology of vehicle high maneuverability, cross-country traveling ability, it has also become the development trend of the following power transmission technology, and front deceleration device
Transmission scheme is difficult to meet future to the multifarious demand of wheel motor drive device, therefore, it is necessary to carry out novel hub electricity
Machine actuating device retarder conceptual design.
Summary of the invention
(1) technical problems to be solved
Subtract the technical problem to be solved by the present invention is how to provide a kind of wheel motor drive device single-stage helical teeth planet
Fast device scheme, in the case where meeting the high compact and long-life constraint condition, it is desirable that increase the reduction ratio of hub reduction gear, as far as possible with suitable
Answer urgent need of the vehicle to wheel motor drive device Motor torque is reduced.
(2) technical solution
In order to solve the above technical problems, the present invention provides a kind of wheel motor drive device single-stage helical teeth planetary reduction gear
Device, the retarder are arranged using interior external toothing duplex, wherein sun gear input, planet carrier output, gear ring braking；
The retarder includes: sun gear 1, multiple planetary gear sets, ring gear 4, planet carrier 5, external gear 6, reducing gearbox
Body 7, brake disc 20；
Wherein, in the multiple planetary gear set, each planetary gear set includes first planetary gear 2 and one second
Planetary gear 3；
The sun gear 1 is coupled with motor, and as the input of retarder, sun gear 1 is supported on planet carrier 5, while too
Sun wheel 1 is also supported on external gear 6, and sun gear 1 is engaged with multiple first planetary gears 2 in the multiple planetary gear set, described
Multiple second planetary gears 3 in multiple planetary gear sets are engaged with ring gear 4, each first planetary gear 2 with corresponding one second
Planetary gear 3 is arranged in pairs, and thus forms one group of duplicate gear, so that multiple planetary gear sets form multiple groups duplicate gear；Every group double
Connection gear is both supported upon on planet wheel spindle；
The planet wheel spindle is fixedly connected with planet carrier 5, and ring gear 4 is engaged with external gear 6 and axial limiting, external gear 6
It is connected on electric machine casing, planet carrier 5 is fixedly connected with reducer shell 7；
The brake disc 20 is fixedly attached on reducer shell 7, and reducer shell 7 is connected on wheel hub, reducing gearbox
Body 7 is supported on 6 on external gear.
Wherein, the retarder includes two oil sealings, is divided into the first oil sealing 16 and the second oil sealing 17, first oil sealing 16
It is mounted on 6 side of external gear, second oil sealing 17 is mounted on 7 side of reducer shell.
Wherein, the sun gear 1, the first planetary gear 2, the second planetary gear 3, ring gear 4 and external gear 6 are all made of involute
Helical gear, ring gear 4 use floating support mode, and sun gear 1, the first planetary gear 2 and the second planetary gear 3 are set using axial modification
Meter.
Wherein, the sun gear 1 uses spline coupling with motor.
Wherein, the ring gear 4 passes through snap ring axial limiting with external gear 6.
Wherein, the external gear 6 is connected on electric machine casing by fixing bolt 18.
Wherein, the reducer shell 7 is connected on wheel hub by fixing bolt 19.
Wherein, the retarder further includes ball bearing group；The ball bearing group includes multiple ball bearings, is divided into the first ball axis
Hold the 8, second ball bearing 9, third ball bearing 10, the 4th ball bearing 11；
The sun gear 1 is supported on planet carrier 5 by the first ball bearing 8 and the second ball bearing 9
The sun gear 1 is supported on external gear 6 by third ball bearing 10；
The reducer shell 7 is supported on external gear 6 by the 4th ball bearing 11.
Wherein, the retarder further includes cylinder roller bearing group；The cylinder roller bearing group includes multiple cylinder rollings
Sub- bearing；
Every group of duplicate gear passes through two ball bearings and two cylinder roller bearings are supported on planet wheel spindle.
(3) beneficial effect
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) layout that the present invention is arranged by external toothing duplex in optimizing, using sun gear input, planet carrier output and gear ring
Second planetary gear and ring gear are disposed adjacent to motor side, are connected to using external gear and fixing bolt by the mode of braking
The braking of ring gear is realized on electric machine casing, and planet carrier and reducer shell are connected as output, is constrained in geometrical boundary
The reduction ratio of single-stage planetary speed reducer is effectively increased under the premise of it is required that.
(2) each gear is all made of involute helical gear in the present invention, and gear ring uses floating support, and to sun gear, first
Planetary gear and the second planetary gear carry out axial modification design, can effectively reduce vibration, noise, improve transmission efficiency and use the longevity
Life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of technical solution of the present invention.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
To solve prior art problem, the present invention provides a kind of wheel motor drive device single-stage helical teeth planetary reduction gear
Device, the retarder are arranged using interior external toothing duplex, wherein sun gear input, planet carrier output, gear ring braking；
As shown in Figure 1, the retarder includes: sun gear 1, multiple planetary gear sets, ring gear 4, planet carrier 5, external gear
6, reducer shell 7, brake disc 20；
Wherein, in the multiple planetary gear set, each planetary gear set includes first planetary gear 2 and one second
Planetary gear 3；
The sun gear 1 is coupled with motor, and as the input of retarder, sun gear 1 is supported on planet carrier 5, while too
Sun wheel 1 is also supported on external gear 6, and sun gear 1 is engaged with multiple first planetary gears 2 in the multiple planetary gear set, described
Multiple second planetary gears 3 in multiple planetary gear sets are engaged with ring gear 4, each first planetary gear 2 with corresponding one second
Planetary gear 3 is arranged in pairs, and thus forms one group of duplicate gear, so that multiple planetary gear sets form multiple groups duplicate gear；Every group double
Connection gear is both supported upon on planet wheel spindle；
The planet wheel spindle is fixedly connected with planet carrier 5, and ring gear 4 is engaged with external gear 6 and axial limiting, external gear 6
It is connected on electric machine casing, planet carrier 5 is fixedly connected with reducer shell 7；
The brake disc 20 is fixedly attached on reducer shell 7, and reducer shell 7 is connected on wheel hub, reducing gearbox
Body 7 is supported on 6 on external gear.
Wherein, the retarder includes two oil sealings, is divided into the first oil sealing 16 and the second oil sealing 17, first oil sealing 16
It is mounted on 6 side of external gear, i.e. 6 inside of external gear, second oil sealing 17 is mounted on 7 side of reducer shell, i.e. retarder
7 inside of shell.
Wherein, the sun gear 1, the first planetary gear 2, the second planetary gear 3, ring gear 4 and external gear 6 are all made of involute
Helical gear, ring gear 4 use floating support mode, and sun gear 1, the first planetary gear 2 and the second planetary gear 3 are set using axial modification
Meter is conducive to reduce vibration, noise, improves the transmission efficiency and service life of retarder.
Wherein, the sun gear 1 uses spline coupling with motor.
Wherein, the ring gear 4 passes through snap ring axial limiting with external gear 6.
Wherein, the external gear 6 is connected on electric machine casing by fixing bolt 18.
Wherein, the reducer shell 7 is connected on wheel hub by fixing bolt 19.
Wherein, the retarder further includes ball bearing group；The ball bearing group includes multiple ball bearings, is divided into the first ball axis
Hold the 8, second ball bearing 9, third ball bearing 10, the 4th ball bearing 11；
The sun gear 1 is supported on planet carrier 5 by the first ball bearing 8 and the second ball bearing 9
The sun gear 1 is supported on external gear 6 by third ball bearing 10；
The reducer shell 7 is supported on external gear 6 by the 4th ball bearing 11.
Wherein, the retarder further includes cylinder roller bearing group；The cylinder roller bearing group includes multiple cylinder rollings
Sub- bearing；
Every group of duplicate gear passes through two ball bearings 12 and 13 and two supports of cylinder roller bearing 14 and 15 are expert at
On spider gear shaft.
The layout that the present invention is arranged by external toothing duplex in optimizing, using sun gear input, planet carrier output and gear ring system
Second planetary gear and ring gear are disposed adjacent to motor side, are connected to electricity using external gear and fixing bolt by dynamic mode
The braking that ring gear is realized on casing body, effectively increases single-stage planetary speed reducer under the premise of geometrical boundary constraint requirements
Reduction ratio.
To sum up, hub reduction gear provided by the present invention is arranged using interior external toothing duplex, comprising: sun gear, the first planet
Wheel, the second planetary gear, planet carrier and gear ring, wherein sun gear input, planet carrier output, gear ring braking.Sun gear and input shaft
It being fixedly connected, at duplicate gear, the first planetary gear far from motor is engaged with sun gear for the first planetary gear and the second planetary gear set,
The second planetary gear close to motor is engaged with ring gear, and ring gear is engaged with external gear and is fixedly attached on electric machine casing and realizes
Braking, ring gear use floating support mode, and planetary gear is supported on planet by multiple cylinder roller bearings and deep groove ball bearing
On wheel shaft, planet carrier is fixedly connected with reducer shell, and brake disc is mounted on electric machine casing.Each gear of retarder is all made of gradually
Burst at the seams helical gear, wherein carries out axial modification design to sun gear, the first planetary gear and the second planetary gear.The present invention passes through excellent
External toothing duplex arrangement office in changing, improves single-stage planetary speed reducer under the premise of meeting service life and geometrical boundary constraint requirements
Transmission ratio, in addition, the retarder use involute helical gear, floating gear ring and axial modification technology, be conducive to reduce vibration,
Noise simultaneously improves transmission efficiency.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of wheel motor drive device single-stage helical teeth planetary reduction gear, which is characterized in that inside and outside the retarder uses
Engage duplex row, wherein sun gear input, planet carrier output, gear ring braking；
The retarder includes: sun gear (1), multiple planetary gear sets, ring gear (4), planet carrier (5), external gear (6), slows down
Device shell (7), brake disc (20)；
Wherein, in the multiple planetary gear set, each planetary gear set includes first planetary gear (2) and second row
Star-wheel (3)；
The sun gear (1) is coupled with motor, and as the input of retarder, sun gear (1) is supported on planet carrier (5), simultaneously
Sun gear (1) is also supported on external gear (6), multiple first planetary gears (2) in sun gear (1) and the multiple planetary gear set
Engagement, multiple second planetary gears (3) in the multiple planetary gear set are engaged with ring gear (4), each first planetary gear (2) and
Corresponding second planetary gear (3) is arranged in pairs, and thus forms one group of duplicate gear, so that multiple planetary gear sets form multiple groups
Duplicate gear；Every group of duplicate gear is both supported upon on planet wheel spindle；
The planet wheel spindle is fixedly connected with planet carrier (5), and ring gear (4) is engaged with external gear (6) and axial limiting, external gear
(6) it is connected on electric machine casing, planet carrier (5) is fixedly connected with reducer shell (7)；
The brake disc (20) is fixedly attached on reducer shell (7), and reducer shell (7) is connected on wheel hub, retarder
Shell (7) is supported on external gear (6).
2. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that described to subtract
Fast device includes two oil sealings, is divided into the first oil sealing (16) and the second oil sealing (17), first oil sealing (16) is mounted on external gear
(6) side, second oil sealing (17) are mounted on reducer shell (7) side.
3. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that it is described too
Sun wheel (1), the first planetary gear (2), the second planetary gear (3), ring gear (4) and external gear (6) are all made of involute helical gear, interior
Gear ring (4) uses floating support mode, and sun gear (1), the first planetary gear (2) and the second planetary gear (3) are set using axial modification
Meter.
4. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that it is described too
Sun wheel (1) and motor use spline coupling.
5. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that in described
Gear ring (4) and external gear (6) pass through snap ring axial limiting.
6. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that described outer
Gear (6) is connected on electric machine casing by fixing bolt (18).
7. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that described to subtract
Fast device shell (7) is connected on wheel hub by fixing bolt (19).
8. wheel motor drive device as described in claim 1 single-stage helical teeth planetary reduction gear, which is characterized in that described to subtract
Fast device further includes ball bearing group；The ball bearing group includes multiple ball bearings, is divided into the first ball bearing (8), the second ball bearing
(9), third ball bearing (10), the 4th ball bearing (11)；
The sun gear (1) is supported on planet carrier (5) by the first ball bearing (8) and the second ball bearing (9)
The sun gear (1) is supported on external gear (6) by third ball bearing (10)；
The reducer shell (7) is supported on external gear (6) by the 4th ball bearing (11).
9. wheel motor drive device as claimed in claim 8 single-stage helical teeth planetary reduction gear, which is characterized in that described to subtract
Fast device further includes cylinder roller bearing group；The cylinder roller bearing group includes multiple cylinder roller bearings；
Every group of duplicate gear passes through two ball bearings and two cylinder roller bearings are supported on planet wheel spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509496.XA CN109578524A (en) | 2018-12-11 | 2018-12-11 | Wheel motor drive device single-stage helical teeth planetary reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509496.XA CN109578524A (en) | 2018-12-11 | 2018-12-11 | Wheel motor drive device single-stage helical teeth planetary reduction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578524A true CN109578524A (en) | 2019-04-05 |
Family
ID=65928938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811509496.XA Pending CN109578524A (en) | 2018-12-11 | 2018-12-11 | Wheel motor drive device single-stage helical teeth planetary reduction gear |
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| Country | Link |
|---|---|
| CN (1) | CN109578524A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469654A (en) * | 2019-09-06 | 2019-11-19 | 烟台杰瑞石油装备技术有限公司 | A kind of turbine pressure break reduction gearbox |
| CN110805661A (en) * | 2019-11-11 | 2020-02-18 | 天津工业大学 | Compound planetary reducer |
| CN112709790A (en) * | 2020-12-23 | 2021-04-27 | 苏州绿控传动科技股份有限公司 | Planetary power-row driving power combining device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204061745U (en) * | 2014-08-07 | 2014-12-31 | 龙工（上海）精工液压有限公司 | Planetary pinion is the 3Z type planetary gear speed reducing mechanism of floating duplicate gear |
| CN106438862A (en) * | 2016-10-14 | 2017-02-22 | 重庆大学 | Electric wheel side speed reduction device |
| US20180001958A1 (en) * | 2016-07-01 | 2018-01-04 | Chia-Sheng Liang | Hub motor |
| CN108146145A (en) * | 2017-08-28 | 2018-06-12 | 北京理工大学 | A kind of Electric Motor Wheel and vehicle with big gear ratio planetary reduction gear |
| CN207926363U (en) * | 2018-03-19 | 2018-09-28 | 浙江尤奈特电机有限公司 | A kind of wheel hub motor |
-
2018
- 2018-12-11 CN CN201811509496.XA patent/CN109578524A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204061745U (en) * | 2014-08-07 | 2014-12-31 | 龙工（上海）精工液压有限公司 | Planetary pinion is the 3Z type planetary gear speed reducing mechanism of floating duplicate gear |
| US20180001958A1 (en) * | 2016-07-01 | 2018-01-04 | Chia-Sheng Liang | Hub motor |
| CN106438862A (en) * | 2016-10-14 | 2017-02-22 | 重庆大学 | Electric wheel side speed reduction device |
| CN108146145A (en) * | 2017-08-28 | 2018-06-12 | 北京理工大学 | A kind of Electric Motor Wheel and vehicle with big gear ratio planetary reduction gear |
| CN207926363U (en) * | 2018-03-19 | 2018-09-28 | 浙江尤奈特电机有限公司 | A kind of wheel hub motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469654A (en) * | 2019-09-06 | 2019-11-19 | 烟台杰瑞石油装备技术有限公司 | A kind of turbine pressure break reduction gearbox |
| CN110805661A (en) * | 2019-11-11 | 2020-02-18 | 天津工业大学 | Compound planetary reducer |
| CN112709790A (en) * | 2020-12-23 | 2021-04-27 | 苏州绿控传动科技股份有限公司 | Planetary power-row driving power combining device |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
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