CN212080059U - Planetary gear mechanism for hybrid power transmission - Google Patents
Planetary gear mechanism for hybrid power transmission Download PDFInfo
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- CN212080059U CN212080059U CN201921879046.XU CN201921879046U CN212080059U CN 212080059 U CN212080059 U CN 212080059U CN 201921879046 U CN201921879046 U CN 201921879046U CN 212080059 U CN212080059 U CN 212080059U
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- planetary gear
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 abstract description 14
- 239000012530 fluid Substances 0.000 description 7
- 239000012809 cooling fluid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a planetary gear mechanism for hybrid transmission, it includes first planet row, second planet row and planet carrier, wherein the planet carrier has a first installation space and second installation space, first planet row settle in first installation space, the second planet row settle in the second installation space, in order to form planetary gear mechanism.
Description
Technical Field
The utility model relates to a planetary gear mechanism especially relates to a planetary gear mechanism for hybrid transmission.
Background
A planetary gear mechanism is a relatively complex structure whose design is influenced by various factors. The double-row planetary gear mechanism is limited by the conditions of space, kinematic coupling and decomposition and the floating mode of components. The common planetary gear mechanism has simple structure, less freedom degree and single function and can only provide less gear ratios. The planet carrier of the common planetary gear mechanism is usually welded planets after machining, the machining method is complex and has the problem of welding deformation, the common planetary gear mechanism adopts a gear ring, the floating structure is single, and the problem of gear meshing unbalance loading often exists. It is therefore desirable to provide a planetary gear mechanism that can realize a variety of gear ratios with a relatively simple structure, and that has a floating structure designed to be simple and practical, and that avoids the problem of gear meshing unbalance loading.
Disclosure of Invention
In view of this, the utility model provides a planetary gear mechanism for hybrid transmission that small, quality is little, compact structure, and bearing capacity is big, and transmission efficiency is high, and drive ratio is big.
In order to achieve the above object, the present invention provides a planetary gear mechanism for a hybrid transmission, including: the planetary gear mechanism comprises a first planetary row, a second planetary row and a planetary carrier, wherein the planetary carrier is provided with a first installation space and a second installation space, the first planetary row is arranged in the first installation space, and the second planetary row is arranged in the second installation space to form the planetary gear mechanism.
Further, the planet carrier also comprises a planet carrier front cover which is fixedly arranged on one side of the planet carrier close to the first installation space, so that a complete supporting mechanism is formed.
Further, first planet row includes planet wheel, first antifriction bearing, big sun gear, first round pin axle, wherein the planet wheel passes through first round pin axle and installs on the planet carrier, first antifriction bearing install in between planet wheel and the first round pin axle, just the planet wheel can center on first round pin axle free rotation.
Further, the planetary gear mechanism further comprises a first inner gear ring and an output shaft, wherein the large sun gear is meshed with the planet gear through a gear structure, the planet gear is meshed with the inner gear ring through the gear structure, and the inner gear ring is connected with the output shaft through a spline structure. All components of the first planetary row may freely rotate about the geometric centerline of the planetary gear mechanism.
Further, the second planet row comprises a large planet wheel, a second rolling bearing, a small planet wheel, a second pin shaft and a small sun wheel, wherein the large planet wheel is installed on the planet carrier through the first pin shaft, the second rolling bearing is installed between the large planet wheel and the first pin shaft, and the large planet wheel can freely rotate around the first pin shaft. The small planet wheel is arranged on the planet carrier through a second pin shaft, the second rolling bearing is arranged between the small planet wheel and the second pin shaft, and the small planet wheel can freely rotate around the second pin shaft.
Further, the planetary gear mechanism further comprises a second inner gear ring, the small sun gear is meshed with the small planet gear through a gear structure, the small planet gear is meshed with the large planet gear through the gear structure, the large planet gear is meshed with the second inner gear ring through the gear structure, and the second inner gear ring is connected with the output shaft through a spline structure. All members of the second planetary row may be free to rotate about the geometric centre line of the planetary gear mechanism.
Further, the planet carrier is integrally cast and formed.
The utility model provides a planetary gear mechanism for hybrid transmission is small, the quality is little, compact structure, and bearing capacity is big, and transmission efficiency is high, and the drive ratio is big. Meanwhile, the planet carrier is integrally cast, so that the integral rigidity of the structure is higher, and the stable power transmission is facilitated; the planet carrier is cast and formed, so that welding thermal deformation can be reduced, and cost can be saved. The inner gear rings are connected through a spline structure and float, so that stress is uniform, and bearing capacity is higher.
Drawings
FIG. 1 is a cross-sectional view of a first planetary row of a planetary gear mechanism for a hybrid transmission in accordance with the present invention;
FIG. 2 is a cross-sectional view of a second planetary row of a planetary gear mechanism for a hybrid transmission in accordance with the present invention;
FIG. 3 is a cross-sectional view of a planetary gear mechanism for a hybrid transmission in accordance with the present invention;
fig. 4 is a cross-sectional view of a carrier of a planetary gear mechanism for a hybrid transmission according to the present invention;
fig. 5 is a schematic structural view of an inner gear ring for a hybrid transmission according to the present invention.
Detailed Description
The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
It is to be understood that the described embodiments are merely some embodiments and not all embodiments of the present application, and that the following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application and its applications.
In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or all manner of connections; "coupled" may be direct or indirect through an intermediary. The terms "upper", "lower", and the like indicate orientations or positional relationships based on the manner or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific orientation, be constructed and operated in a specific orientation. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 5, the present invention provides a planetary gear mechanism for a hybrid transmission, which includes a first planetary gear train 1, a second planetary gear train 2 and a planetary carrier 16, wherein the planetary carrier 16 has a first installation space 161 and a second installation space 162, the first planetary gear train 1 is disposed in the first installation space 161, and the second planetary gear train 2 is disposed in the second installation space 162 to form the planetary gear mechanism.
Specifically, the planet carrier 16 further comprises a planet carrier front cover 5, and the planet carrier front cover 163 is fixedly installed at one side of the planet carrier 16 close to the first installation space 161, so as to form a complete supporting mechanism.
The first planet row 1 comprises a planet wheel 6, a first rolling bearing 9 and a large sun wheel 4, wherein the planet wheel 6 is installed on the planet carrier 16 through a first pin shaft 8, the first rolling bearing 9 is installed between the planet wheel 6 and the first pin shaft 8, and the planet wheel 6 can rotate freely around the first pin shaft 8.
Specifically, the planetary gear mechanism further comprises a first inner gear ring 10 and an output shaft 15, wherein the large sun gear 4 is engaged with the planet gears 6 through a gear structure, the planet gears 6 are engaged with the inner gear ring 10 through a gear structure, and the inner gear ring 10 is connected with the output shaft 16 through a spline structure. All components of the first planetary row 1 can rotate freely about the geometric centre line of the planetary gear.
More specifically, the external power is connected with the large sun gear 4 through a spline structure to input power to the first planetary row 1. The large sun gear 4 transmits power to the inner gear ring 10 through the planet gears 6, then the inner gear ring 10 transmits power to the output shaft 15, and the output shaft 15 outputs power.
It should be noted that a power input mechanism 17 is further disposed on the planet carrier 16, wherein the power input mechanism 17 has a bore fluid channel (not shown), the bore fluid channel of the power input mechanism 17 provides cooling fluid for the whole planetary gear mechanism, and the cooling fluid reaches the fluid channel 14 for mounting the pin 8 through the fluid channel of the planet carrier 16, so as to lubricate each component of the first planetary gear set 1.
The second planet row 2 comprises a large planet wheel 12, a second rolling bearing 13, a small planet wheel 18 and a small sun wheel 3, wherein the large planet wheel 12 is mounted on the planet carrier 16 through the first pin shaft 8, the second rolling bearing 13 is mounted between the large planet wheel 12 and the first pin shaft 8, and the large planet wheel 12 can rotate freely around the first pin shaft 8. The small planet wheel 18 is mounted on the planet carrier 16 through a second pin 19, the second rolling bearing 13 is mounted between the small planet wheel 18 and the second pin 19, and the small planet wheel 18 can rotate freely around the second pin 19.
The small sun gear 3 is meshed with the small planet gear 18 through a gear structure, the small planet gear 18 is meshed with the large planet gear 12 through a gear mechanism, the large planet gear 12 is meshed with the second inner gear ring 11 through a gear structure, and the second inner gear ring 11 is connected with the output shaft 15 through a spline structure. All components of the second planetary row 2 can rotate freely about the geometric centre line of the planetary gear.
External power is connected with the small sun gear 3 through a spline structure and inputs power to the second planet row 2. The small sun gear 3 is strongly powered and transmitted to the second inner gear ring 11 through the small planet gear 18 and the large planet gear 12, and then the second inner gear ring 11 is strongly powered and transmitted to the output shaft 15, and the output shaft 15 outputs power.
The cooling fluid is provided for the whole planetary gear mechanism by the inner hole fluid channel of the power input mechanism 17 of the planet carrier 16, and the cooling fluid respectively reaches the fluid channels 14 and 20 of the first pin 8 and the second pin 19 through the fluid channel of the planet carrier 16, so as to lubricate each component of the second planetary row 2.
In the planetary gear mechanism disclosed in this embodiment, in a practical hybrid transmission application, the power input mechanism 17 is connected to the engine via a clutch, the large sun gear 4 is connected to the motor, and one brake can stop the large sun gear 4, and the small sun gear 3 is connected to another motor. The planet carrier front cover 5 is connected with a brake, and the output shaft 15 is connected with a parking mechanism. The planetary gear mechanism is connected with three power sources, and 9 forward gears are realized through the on-off of the clutch and the brake. The inorganic speed regulation characteristic of the motor is utilized, and the working range of the engine is optimized by combining a planetary gear mechanism, so that the aim of reducing oil consumption is fulfilled.
The utility model provides a planetary gear mechanism for hybrid transmission is small, the quality is little, compact structure, and bearing capacity is big, and transmission efficiency is high, and the drive ratio is big. Meanwhile, the planet carrier is integrally cast, so that the integral rigidity of the structure is higher, and the stable power transmission is facilitated; the planet carrier is cast and formed, so that welding thermal deformation can be reduced, and cost can be saved. The inner gear rings are connected through a spline structure and float, so that stress is uniform, and bearing capacity is higher.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A planetary gear set for a hybrid transmission includes a first planetary row, a second planetary row and a planet carrier, wherein the planet carrier has a first mounting space and a second mounting space, the first planetary row is disposed in the first mounting space, the second planetary row is disposed in the second mounting space to form the planetary gear set.
2. A planetary gear mechanism for a hybrid transmission as claimed in claim 1, wherein the planet carrier further comprises a front carrier cover fixedly mounted on a side of the planet carrier adjacent to the first mounting space, thereby forming a complete support mechanism.
3. The planetary gear mechanism for a hybrid transmission according to claim 1, wherein the first planetary row includes planet wheels, a first rolling bearing, a large sun wheel, and a first pin, wherein the planet wheels are mounted on the planet carrier by the first pin, the first rolling bearing is mounted between the planet wheels and the first pin, and the planet wheels are free to rotate about the first pin.
4. A planetary gear unit for a hybrid transmission according to claim 3, characterized by a first annulus gear and an output shaft, wherein the large sun gear is in engagement with the planet gears via a gear arrangement, the planet gears are in engagement with the annulus gear via a gear arrangement, and the annulus gear is connected with the output shaft via a spline arrangement.
5. The planetary gear mechanism for a hybrid transmission as in claim 4, wherein all members of the first planetary row are free to rotate about a geometric centerline of the planetary gear mechanism.
6. The planetary gear mechanism for a hybrid transmission according to claim 4, wherein the second planetary gear set comprises a large planetary gear, a second rolling bearing, a small planetary gear, a second pin and a small sun gear, wherein the large planetary gear is mounted on the planetary carrier through the first pin, the second rolling bearing is mounted between the large planetary gear and the first pin, and the large planetary gear can freely rotate around the first pin; the small planet wheel is arranged on the planet carrier through a second pin shaft, the second rolling bearing is arranged between the small planet wheel and the second pin shaft, and the small planet wheel can freely rotate around the second pin shaft.
7. A planetary gear unit for a hybrid transmission according to claim 6, characterised in that the planetary gear unit further comprises a second annulus gear, the small sun gear engaging with the small planet gears via a gear arrangement, the small planet gears engaging with the large planet gears via a gear arrangement, the large planet gears engaging with the second annulus gear via a gear arrangement, the second annulus gear being connected with the output shaft via a spline arrangement.
8. The planetary gear mechanism for a hybrid transmission as in claim 7, wherein all members of the second planetary row are free to rotate about a geometric centerline of the planetary gear mechanism.
9. A planetary gear mechanism for a hybrid transmission according to any one of claims 1 to 8, wherein the carrier is integrally cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921879046.XU CN212080059U (en) | 2019-11-04 | 2019-11-04 | Planetary gear mechanism for hybrid power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921879046.XU CN212080059U (en) | 2019-11-04 | 2019-11-04 | Planetary gear mechanism for hybrid power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212080059U true CN212080059U (en) | 2020-12-04 |
Family
ID=73556718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921879046.XU Active CN212080059U (en) | 2019-11-04 | 2019-11-04 | Planetary gear mechanism for hybrid power transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212080059U (en) |
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2019
- 2019-11-04 CN CN201921879046.XU patent/CN212080059U/en active Active
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