CN117267337A - Three planetary gear's big moment of torsion differential mechanism - Google Patents
Three planetary gear's big moment of torsion differential mechanism Download PDFInfo
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- CN117267337A CN117267337A CN202311291038.4A CN202311291038A CN117267337A CN 117267337 A CN117267337 A CN 117267337A CN 202311291038 A CN202311291038 A CN 202311291038A CN 117267337 A CN117267337 A CN 117267337A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 230000009467 reduction Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 13
- 239000003638 chemical reducing agent Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 10
- 238000011161 development Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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
- 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
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
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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
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a three-planetary-gear high-torque differential mechanism, which comprises a shell and a rotating gear set arranged in the shell, wherein the rotating gear set comprises: the three planetary gears are respectively arranged in the shell through planetary gear shafts and are uniformly distributed along the circumferential direction of the shell; the two half-shaft gears are respectively arranged on two sides of the three planetary gears along the axial direction of the shell, and each half-shaft gear is meshed with the three planetary gears. By providing three planetary gears, during the use of the differential, the load carried by a single planetary gear is reduced due to the increase of the number of planetary gears, and under the condition of bearing large torque, the load carried by the single planetary gear may be equivalent to that of a single planetary gear of a conventional small-torque differential and may be smaller, and the differential can meet the use requirement of large-torque output under the condition of keeping the existing materials.
Description
Technical Field
The invention relates to the technical field of automobile transmission systems, in particular to a three-planetary-gear high-torque differential mechanism.
Background
With the popularization and development of automobiles, the demands of user groups on the automobiles change from the previous riding-instead demands to the current dynamic demands, and meanwhile, the dynamic indexes become a big selling point along with the mutual competition of the automobiles, so that the phenomenon is particularly obvious in new energy automobiles. The direct pointing of the dynamic index is the wheel output of the transmission system. As wheel side output demands become greater, conventional differentials will not meet design requirements.
When the conventional differential is used, the output torque of the wheel edge is transmitted to two planetary gears through the planetary gear shafts to bear, and when the torque is increased to a certain degree, the load born by the planetary gears and the planetary gear shafts exceeds the performance parameters of the materials, so that the failure such as fracture and the like can be caused. If the structure is not changed, only materials with better strength can be sought, but the material cost is increased in the process of selecting new materials, and the manufacturing cost of the whole set of processing technology is brought, so that the cost is too high. In addition, conventional differential housings are typically one-piece, and the internal gears are typically assembled from windows in the housing design, so the design of window size is particularly important in the differential housing design process.
With further improvement of electric drive assembly torque and power in new energy industry, a large-torque differential can be better matched with the whole power output, so that better reliability and power performance of the vehicle are better ensured. Therefore, development of the differential mechanism capable of bearing large torque can be better adapted to the development of the market, and meanwhile, the newly developed large-torque differential mechanism can be downward compatible with the existing differential mechanism, so that the platform popularization of products is realized.
Disclosure of Invention
The invention aims at: aiming at the problem that the conventional differential mechanism cannot meet the requirement of large torque output, the large torque differential mechanism with three planetary gears is provided, and the transmission of larger torque can be realized, so that the further improvement of the torque and the power of an electric drive assembly in the new energy automobile industry is met.
The invention is realized by the following technical scheme:
in a first aspect, the present invention provides a three-planetary high torque differential comprising a housing and a rotating gearset disposed within the housing, the rotating gearset comprising:
the three planetary gears are respectively arranged in the shell through planetary gear shafts and are uniformly distributed along the circumferential direction of the shell;
the two half-shaft gears are respectively arranged on two sides of the three planetary gears along the axial direction of the shell, and each half-shaft gear is meshed with the three planetary gears.
In the scheme, by arranging three planetary gears, during the use process of the differential mechanism, the load borne by a single planetary gear is reduced due to the increase of the number of the planetary gears, and under the condition of bearing large torque, the load of the single planetary gear can be equivalent to that of a single planetary gear of a conventional small-torque differential mechanism, and can be smaller, and the differential mechanism can meet the use requirement of large-torque output under the condition of keeping the existing materials.
In some embodiments, the three planetary gears are respectively sleeved on the three planetary gear shafts, one end of each planetary gear shaft is fixedly arranged on the inner wall of the shell, the other ends of the three planetary gear shafts are connected through a planetary gear shaft connector, and three planetary gear shaft connecting holes are uniformly distributed in the circumferential direction of the planetary gear shaft connector and are used for being connected with the three planetary gear shafts. By providing the planet shaft, a support structure is provided for the rotation of the planet gear, so that the rotation of the planet gear is stable. The three planetary gear shaft connecting holes are uniformly distributed in the circumferential direction of 120 degrees, and after the planetary gear shaft connector is connected with the three planetary gear shafts, the axial and circumferential self-positioning function can be realized, other positioning modes are not required to be designed, and detachable connection is formed, so that the installation and the detachment work of the planetary gear shafts are convenient.
In some embodiments, each of the planet pins is fixedly connected to the housing by a planet pin. The design can effectively fix the planet gear shaft, and prevent the planet gear shaft from rotating and axially moving.
In some embodiments, the rotating gearset further includes three planetary gear gaskets, each of which is sleeved on each of the planetary gear shafts to separate the planetary gears from the inner wall of the housing.
In some embodiments, the rotating gearset further includes side gear shims, two of which are respectively sleeved on each of the side gears to separate the side gears from axial thrust surfaces on the housing.
In some embodiments, the housing includes a left housing and a right housing forming a cavity housing the rotation gear set, the left housing and the right housing being connected by a bolt. Through the mode of designing the differential mechanism casing into left casing and right casing combination, not only make things convenient for the inside installation that rotates the gear train of differential mechanism, can make the circumference window shape and the size design of differential mechanism casing more convenient simultaneously, can satisfy the condition that independent differential mechanism sub-assembly (not contain main reducer gear) supplies goods simultaneously.
In some embodiments, a main reduction gear is provided on the housing, the main reduction gear being bolted to the housing. Because the main speed reducer gears are completely independent, the matching of different main speed reducer gears can be conveniently realized.
In some embodiments, a housing locating pin and a housing process screw are provided on the housing, wherein the housing locating pin is used to locate the left housing and the right housing, and to locate the main reduction gear circumferentially; the shell process screw is used for pre-fixing the left shell and the right shell. Because the differential mechanism casing adopts split type structure, not only realize the location of left casing and right casing through setting up the casing locating pin, still to main reduction gear circumference location to through casing technology screw with left casing and right casing pre-connection together, guarantee the erection joint of differential mechanism and main reduction gear.
In some embodiments, the left housing is integrated with the main reduction gear as a unitary structure. This design can reduce the number and variety of parts of the differential.
In a second aspect, the present invention provides a vehicle comprising a power transmission and the three planetary gear high torque differential of the first aspect.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. in the differential mechanism, three planetary gears are arranged, so that the load borne by a single planetary gear is reduced due to the increase of the number of the planetary gears in the use process of the differential mechanism, and under the condition of bearing large torque, the single planetary gear is possibly loaded equivalent to the single planetary gear of a conventional small-torque differential mechanism and possibly smaller, and the differential mechanism can meet the use requirement of large-torque output under the condition of keeping the existing materials;
2. through the mode of designing the differential mechanism casing into left casing and right casing combination, not only make things convenient for the inside installation of rotating gear train of differential mechanism, can make the window size design of differential mechanism casing more convenient simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic representation of a large torque differential with three planetary gears according to the present invention;
FIG. 2 is an exploded schematic view of a three planetary high torque differential of the present invention;
FIG. 3 is a schematic view of the side gear and three planet gears of the present invention after installation;
FIG. 4 is a schematic view of three planet pins and a planet pin connector of the present invention after installation;
FIG. 5 is a schematic view of the present invention without the main reduction gear installed;
fig. 6 is an exploded view of another three-planetary high torque differential of the present invention.
In the drawings, the reference numerals and corresponding part names:
the main speed reducer comprises a main speed reducer connecting bolt 1, a left shell 2, side gear gaskets 3-1 and 3-2, side gears 4-1 and 4-2, a shell locating pin 5, a planet gear shaft pin 6, a planet gear shaft 7, a planet gear gasket 8, a planet gear 9, a planet gear shaft connector 10, a right shell 11, a shell process screw 12, a main speed reducer 13 and an integrated main speed reducer A1.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.
In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two), unless specifically defined otherwise.
In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Referring to fig. 1-5, the three-planetary-gear large-torque differential provided in the embodiments of the present application includes a housing and a rotation gear set disposed in the housing, where the rotation gear set includes planetary gears 9 and side gears 4-1, 4-2, three planetary gears 9 are respectively installed in the housing through planetary gear shafts 7, and the three planetary gears 9 are uniformly distributed along the circumferential direction of the housing; the side gears have two gears 4-1, 4-2, which are disposed on both sides of the three planetary gears 9 in the axial direction of the housing, respectively, and each of the side gears 4-1, 4-2 is engaged with the three planetary gears 9.
Each of the side gears 4-1, 4-2 is engaged with three of the planetary gears 9 simultaneously, and the three planetary gears 9 are arranged at an included angle of 120 ° on a plane, so that the three planetary gears 9 are uniformly stressed, the side gears 4-1, 4-2 are required to be subjected to tooth matching design according to the number of the planetary gears 9, and meanwhile, the requirement of a differential speed ratio is also required to be combined.
By providing three planetary gears, during the use of the differential, the load carried by a single planetary gear is reduced due to the increase of the number of planetary gears, and under the condition of bearing large torque, the load carried by the single planetary gear may be equivalent to that of a single planetary gear of a conventional small-torque differential and may be smaller, and the differential can meet the use requirement of large-torque output under the condition of keeping the existing materials.
According to some embodiments of the present application, three planetary gears 9 are respectively sleeved on three planetary gear shafts 7, one end of each planetary gear shaft 7 is fixedly arranged on the inner wall of the housing, and the other ends of the three planetary gear shafts 7 are connected through a planetary gear shaft connector 10.
Three first mounting holes matched with the planetary gear shafts 7 are uniformly distributed on the differential shell in the circumferential direction, and one ends of the three planetary gear shafts 7 extend into the first mounting holes on the shell when being mounted. Three second mounting holes matched with the planet gear shafts 7 are uniformly distributed on the planet gear shaft connector 10 in the circumferential direction, and the other ends of the three planet gear shafts 7 extend into the second mounting holes on the planet gear shaft connector 10, so that the power interconnection of the three planet gear shafts 7 is realized.
By providing the planet shaft, a support structure is provided for the rotation of the planet gear, so that the rotation of the planet gear is stable. The three planetary gear shafts are connected together through the planetary gear shaft connector to form detachable connection, so that the installation and the detachment work of the planetary gear shafts are convenient.
According to some embodiments of the present application, each of the planet pins 7 is fixedly connected to the housing by means of a planet pin 6. The design can effectively fix the planet gear shaft, and prevent the planet gear shaft from rotating and axially moving.
Specifically, a through pin hole is provided in a section of each of the pinion pins 7 connected to the differential case, and a pin hole is correspondingly provided in the differential case. In order to facilitate the installation of the planet gear shaft pin, three avoidance holes are cast in the differential case, and the circumferential positions of the avoidance holes correspond to the circumferential positions of the first installation holes, so that the planet gear shaft pin 6 can be pressed into pin holes formed in the differential case and the planet gear shaft 7 through the avoidance holes.
According to some embodiments of the present application, the rotating gear set further includes planetary gear gaskets 8, and the planetary gear gaskets 8 are respectively sleeved on each of the planetary gear shafts 7 to separate the planetary gears 9 from the inner wall of the housing. By providing the planetary gear spacers, the meshing state of the planetary gears and the side gears can be adjusted.
Specifically, the planetary gear spacer 8 is a spherical spacer so as to be in good contact with the spherical surface inside the differential case, while the end of the planetary gear 9 opposite to the planetary gear spacer 8 is also spherical. In order to reduce friction loss, the planetary gear pad 8 may be a spherical pad treated by soft nitriding.
According to some embodiments of the present application, the rotating gearset further includes side gear shims 3-1, 3-2 having two 3-1, 3-2 sleeves over each of the side gears 4-1, 4-2, respectively, to space the side gears 4-1, 4-2 from axial thrust surfaces on the housing. By providing the side gear spacers, the meshing state of the side gears with the planetary gears can be adjusted.
Specifically, the side gears 4-1, 4-2 are provided at their ends remote from the tooth surfaces with positioning cylinders for extending into positioning holes in the differential case. The step formed between the positioning cylinder and the tooth surface is the axial thrust surface of the side gear, and the axial position of the side gear can be changed by adjusting the thickness of the side gear gasket.
According to some embodiments of the present application, the housing includes a left housing 2 and a right housing 11, the left housing 2 and the right housing 11 form a cavity for accommodating the rotation gear set, and the left housing 2 and the right housing 11 are connected by bolts. Through the mode of designing the differential mechanism casing into left casing and right casing combination, not only make things convenient for the inside installation of rotating gear train of differential mechanism, can make the circumference window shape and the size design of differential mechanism casing more convenient simultaneously.
Specifically, the left housing 2 and the right housing 11 are formed with flange connection structures. One end of the planetary gear shaft 7 is fixedly connected to the right housing 11, i.e. a first mounting hole for fixing the planetary gear shaft 7 is formed in the right housing 11.
According to some embodiments of the present application, a main reduction gear 13 is provided on the housing, and the main reduction gear 13 is connected with the housing through a plurality of main reduction gear connecting bolts 1. Because the main speed reducer gears are completely independent, the matching of different main speed reducer gears can be conveniently realized.
Specifically, there are fourteen main speed reducer connecting bolts 1, and the main speed reducer connecting bolts 1 pass through connecting holes in the left casing 2 and the right casing 11 and then are connected with connecting holes in the inner ring of the main speed reducer gear 13. That is, the final drive connecting bolt 1 connects the left housing 2, the right housing 11, and the final drive gear 13 to form a whole.
According to some embodiments of the present application, a housing locating pin 5 and a housing process screw 12 are provided on the housing, wherein the housing locating pin 5 is used for locating the left housing 2 and the right housing 11, and locating the main reduction gear 13 circumferentially; the housing process screws 12 are used to pre-fix the left housing 2 and the right housing 11.
The left housing 2 and the right housing 11 are positioned by the housing positioning pin 5, and the housing positioning pin 5 protrudes from the main reduction gear mounting surface on the right side of the right housing 11 so as to extend into the pin hole on the main reduction gear 13, positioning the main reduction gear 13. And the left shell 2 and the right shell 11 are connected into a whole by adopting shell process screws 12. Further, the shell process screw 12 is designed to sink or is a countersunk screw, so that the end face of the screw is not higher than the main reduction gear mounting face on the right side of the right shell 11 after the installation.
Because the differential mechanism casing adopts split type structure, not only realize the location of left casing and right casing through setting up the casing locating pin, still to main reduction gear circumference location to through casing technology screw with left casing and right casing pre-connection together, guarantee the erection joint of differential mechanism and main reduction gear.
The differential in this embodiment is assembled as follows: see fig. 2: the side gear pad 3-2 and the side gear 4-2 are first put into the inner cavity of the right housing 11 of the differential, then three planetary gears 9 and three planetary gear pads 8 are put into the inner right housing 11 in cooperation, the state shown in fig. 3 is formed with the side gear 4-2, simultaneously three planetary gear shafts 7 are respectively inserted through three first mounting holes of the right housing 11, the planetary gear shafts 7 are respectively inserted through inner holes of the planetary gears 9 and inner holes of the planetary gear pads 8, and then put into the planetary gear shaft connector 10, and three planetary gear shafts 7 are respectively inserted into three second mounting holes of the planetary gear shaft connector 10, thus the three planetary gear shafts 7 are connected into one body, wherein the connection state of the planetary gear shafts 7 and the planetary gear shaft connector 10 is shown in fig. 4.
The three planet pin 6 are mounted to the pin holes at the end of the right housing 11, and in the process, the pin holes of the right housing 11 need to be aligned with the pin holes at the end of the planet pin 7 to be mounted in place, and the above components are mounted and fixed. The side gear 4-1 and the side gear spacer 3-1 are then mounted into the inner cavity of the right housing 11 while the housing locating pin 5 is mounted to the left housing 2, and then the locating pin-mounted left housing 2 is mounted to the right housing 11. The housing process screws 12 are then screwed into and fixed from the right housing 11 to the left housing 2, thus forming a differential subassembly as illustrated in fig. 5. Finally, the main reduction gear 13 is mounted on the differential subassembly and is fixedly connected through the main reduction gear connecting bolt 1, so that a complete three-planetary-gear high-torque differential is formed, and the state is shown in fig. 1.
Referring to fig. 6, according to some embodiments of the present application, the left housing 2 and the main reduction gear 13 are integrated into a single structure. This design can reduce the number and variety of parts of the differential.
In this embodiment, the left housing 2 and the final drive gear 13 are designed as an integral final drive gear A1, and the housing process screw 12 can be directly removed, and the main installation process is basically identical to the assembly method, and the main difference is that: the housing locating pin 5 is mounted on the integrated main reduction gear A1, then the integrated main reduction gear A1 with the locating pin mounted is mounted on the right housing 11 of the differential, and is fixed through the main reduction gear connecting bolt 1.
Example 2
The vehicle provided in the embodiment of the application comprises a power transmission device and the three-planetary-gear high-torque differential mechanism in the embodiment 1, wherein the three-planetary-gear high-torque differential mechanism is installed on the power transmission device.
It should be noted that, this differential mechanism installs behind power transmission, and the tip of driving the semi-axis stretches into in the casing through differential casing both ends through-hole to driving the semi-axis tip and getting into in the side gear hole, and driving semi-axis and side gear formation spline link, driving the semi-axis tip design promptly has the external spline, and the side gear design has the internal spline.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a three planetary gear's big torque differential mechanism which characterized in that, include the casing and set up in the rotation gear set in the casing, rotation gear set includes:
the three planetary gears are respectively arranged in the shell through planetary gear shafts and are uniformly distributed along the circumferential direction of the shell;
the two half-shaft gears are respectively arranged on two sides of the three planetary gears along the axial direction of the shell, and each half-shaft gear is meshed with the three planetary gears.
2. The three-planetary-gear large-torque differential mechanism according to claim 1, wherein three planetary gears are respectively sleeved on three planetary gear shafts, one end of each planetary gear shaft is fixedly arranged on the inner wall of the shell, the other ends of the three planetary gear shafts are connected through planetary gear shaft connectors, and three planetary gear shaft connecting holes are uniformly distributed in the circumferential direction of the planetary gear shaft connectors and are used for being connected with the three planetary gear shafts.
3. The three-pinion high torque differential of claim 2 wherein each of the pinion shafts is fixedly connected to the housing by a pinion pin.
4. A three-pinion high torque differential as defined in any one of claims 1-3 wherein said rotating gearset further includes three pinion spacers, one for each of said pinion shafts, for spacing said pinion gears from the inner wall of said housing.
5. The three planetary gear high torque differential according to claim 4, wherein said rotating gearset further comprises side gear spacers, two of said side gear spacers being respectively sleeved on each of said side gears to separate said side gears from axial thrust surfaces on said housing.
6. A three planetary gear high torque differential according to any of claims 1-3, wherein the housing comprises a left housing and a right housing forming a cavity housing the rotating gearset, the left housing and the right housing being bolted.
7. The three planetary gear high torque differential as defined in claim 6, wherein a main reduction gear is provided on the housing, the main reduction gear being bolted to the housing.
8. The three planetary gear high torque differential as defined in claim 7, wherein a housing locating pin and a housing process screw are provided on the housing, wherein the housing locating pin is used to locate the left and right housings and to locate the main reduction gear circumferentially; the shell process screw is used for pre-fixing the left shell and the right shell.
9. The three planetary gear high torque differential as defined in claim 7, wherein said left housing is integral with said main reduction gear.
10. A vehicle comprising a power transmission and a three planetary high torque differential as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291038.4A CN117267337A (en) | 2023-10-08 | 2023-10-08 | Three planetary gear's big moment of torsion differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291038.4A CN117267337A (en) | 2023-10-08 | 2023-10-08 | Three planetary gear's big moment of torsion differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117267337A true CN117267337A (en) | 2023-12-22 |
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ID=89204275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311291038.4A Pending CN117267337A (en) | 2023-10-08 | 2023-10-08 | Three planetary gear's big moment of torsion differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117267337A (en) |
-
2023
- 2023-10-08 CN CN202311291038.4A patent/CN117267337A/en active Pending
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