CN218112339U - Single-motor coaxial double-planet-row electric drive axle system - Google Patents
Single-motor coaxial double-planet-row electric drive axle system Download PDFInfo
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- CN218112339U CN218112339U CN202222142469.1U CN202222142469U CN218112339U CN 218112339 U CN218112339 U CN 218112339U CN 202222142469 U CN202222142469 U CN 202222142469U CN 218112339 U CN218112339 U CN 218112339U
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Abstract
There is provided a single-motor coaxial double-planet-row electric drive axle system, comprising: a motor having a motor shaft; the primary driving gear is connected with the motor shaft; the first parallel shaft is connected with a first primary driven gear and a first secondary driving gear; the second parallel shaft is connected with a second primary driven gear and a second secondary driving gear; the intermediate shaft is fixedly connected with a secondary driven gear, a first planet row and intermediate shaft combination teeth in sequence; the second planet row is connected with a synchronous gear sleeve, and the synchronous gear sleeve can be switched between a first position and a second position; and the differential is connected with a first output half shaft and a second output half shaft and is connected with the planet carrier of the second planet row. The single-motor coaxial transmission is adopted, the volume is small, the weight is light, and the space utilization rate is high.
Description
Technical Field
The utility model relates to a new energy automobile spare part field especially relates to a single motor coaxial type double row planet electric drive axle system.
Background
The development of new energy automobiles is more and more emphasized by the nation. With the rapid development of the electric driving of medium and heavy commercial vehicles, the matching electric drive bridge system has gradually become the mainstream. However, most of electrically-driven axle systems in the current market are single in speed ratio, high in energy consumption and large in occupied space, and cannot take the consideration of both the vehicle speed and the traction force.
Therefore, there is a need to develop a single-motor coaxial double-planet-row electric drive axle system to solve one or more of the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem, according to the utility model discloses an aspect provides a single motor coaxial-type double planet arranges electric drive axle system, its characterized in that includes:
a motor having a motor shaft;
the primary driving gear is connected with the motor shaft;
the first parallel shaft is connected with a first primary driven gear and a first secondary driving gear;
the second parallel shaft is connected with a second primary driven gear and a second secondary driving gear;
the intermediate shaft is fixedly connected with a secondary driven gear, a first planet row and intermediate shaft combination teeth in sequence;
the second planet row is connected with a synchronous gear sleeve, and the synchronous gear sleeve can be switched between a first position and a second position; and
the differential is connected with a first output half shaft and a second output half shaft and is connected with a planet carrier of the second planet row;
the first primary driven gear and the second primary driven gear are meshed with the first driving gear, the second driven gear is meshed with the first secondary driving gear and the second secondary driving gear respectively, the synchronous gear sleeve is connected with a planet carrier of the first planet row when located at the first position, and the synchronous gear sleeve is connected with a middle shaft combined gear when located at the second position.
According to a further aspect of the invention, the motor shaft, the intermediate shaft, the second planetary row and the differential are arranged in sequence and coaxial with each other.
According to the utility model discloses still another aspect, first output semi-axis passes behind the center of second planet row and the center of countershaft, motor shaft and motor in proper order and the wheel connection.
According to the utility model discloses still another aspect, synchronous tooth cover is connected with the sun gear of second planet row.
According to the utility model discloses still another aspect, first planet row and second planet row all include sun gear, planet wheel, ring gear and planet carrier, and the ring gear is connected in the box.
According to another aspect of the present invention, the single-motor coaxial double-planet-row electric drive axle system has a symmetrical structure with respect to the first output half shaft.
According to a further aspect of the invention, the sun gear of the second planetary row and the synchronizing cog sleeve are connected by a stub shaft.
According to a further aspect of the invention, the stub shaft is arranged between the intermediate shaft and the differential and coaxial with the intermediate shaft.
According to the utility model discloses still another aspect, this synchronous tooth cover still can switch to the intermediate position, and this synchronous tooth cover combines the tooth to break away from with planet carrier and the jackshaft of first planet row when being located the intermediate position.
According to another aspect of the present invention, the single-motor coaxial double-planetary-row electric drive axle system has a first forward gear, a second forward gear, a neutral gear, and a reverse gear.
The utility model discloses can obtain following one or more technological effect:
1. single-motor coaxial transmission is adopted, the size is small, the weight is light, and the space utilization rate is high;
2. the novel synchronizer arrangement is adopted, the three-gear switching is realized, and the control is simple and convenient;
3. the double-planet-row transmission series connection work is adopted, the high-speed stage is one planet row transmission, the low-speed stage is two planet row transmissions, and the mode has the advantages of compact structure, convenience in assembly and high transmission efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a single-motor coaxial double-planet-row electric drive axle system according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the first forward gear power transmission of the single-motor coaxial double-planetary-row electric drive axle system according to a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of power transmission of the second forward gear of the single-motor coaxial double-planet-row electric drive axle system according to a preferred embodiment of the present invention.
Detailed Description
The best mode of the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is to be regarded as illustrative in nature and not as restrictive, and various changes and modifications may be made without departing from the spirit and scope of the present invention.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1, there is provided a single-motor coaxial double-planetary-row electric drive axle system, comprising:
a motor 10 having a motor shaft 11;
the primary driving gear 12 is connected with the motor shaft 11;
a first parallel shaft 14 connected with a first primary driven gear 13 and a first secondary driving gear 15;
the second parallel shaft 17 is connected with a second primary driven gear 16 and a second secondary driving gear 18;
the intermediate shaft 24 is fixedly connected with a secondary driven gear 19, a first planet row and intermediate shaft combination teeth 25 in sequence;
a second planet row connected with a synchronous gear sleeve C1, wherein the synchronous gear sleeve C1 can be switched between a first position and a second position; and
a differential 30 to which a first output half shaft 31 and a second output half shaft 32 are connected and which is connected to the carrier 29 of the second planetary row;
the first primary driven gear 13 and the second primary driven gear 16 are meshed with the first driving gear 12, the second driven gear 19 is meshed with the first secondary driving gear 15 and the second secondary driving gear 18 respectively, the synchronous gear sleeve C1 is connected with a planet carrier 23 of the first planet row when located at the first position, and the synchronous gear sleeve C1 is connected with the intermediate shaft combined gear 25 when located at the second position.
According to a further preferred embodiment of the present invention, the motor 10, the motor shaft 11, the intermediate shaft 24, the second planetary row and the differential 30 are arranged in sequence and coaxial with each other.
According to the utility model discloses still another preferred embodiment, the first output semi-axis passes behind the center of second planet row and the center of countershaft, motor shaft and motor in proper order and wheel connection.
According to a further preferred embodiment of the invention, the synchronizing sleeve C1 is connected to the sun gear 26 of the second planetary row.
According to another preferred embodiment of the present invention, the first planetary row and the second planetary row each include a sun gear, a planetary gear, a ring gear, and a planetary carrier, and the ring gear is connected to the case. More specifically, the first planetary row includes a first sun gear 20, a first planet gear 21, a first ring gear 22, and a first carrier 23. The second planetary row comprises a second sun gear 26, second planet gears 27, a second ring gear 28 and a second planet carrier 29.
According to yet another preferred embodiment of the present invention, the single-motor coaxial double-planetary-row electric drive axle system has a symmetrical structure with respect to the first output half shaft 31.
According to a further preferred embodiment of the invention, the sun gear of the second planetary row and the synchronizing toothsleeve are connected by a stub shaft.
According to a further preferred embodiment of the invention, the stub shaft is arranged between the intermediate shaft and the differential and coaxial with the intermediate shaft.
According to a further preferred embodiment of the invention, the synchronizing sleeve can also be switched to an intermediate position, in which it is disengaged from the planet carrier of the first planetary row and the counter shaft engaging teeth.
According to yet another preferred embodiment of the present invention, the single-motor coaxial double-planetary-row electric drive axle system has a first forward gear, a second forward gear, a neutral gear, and a reverse gear.
According to another preferred embodiment of the present invention, there is provided a single-motor coaxial double-planetary-row electric drive axle system, characterized in that: the long half shaft 31 passes through the motor 10 and the motor shaft 11 from the middle and is arranged in a sleeve shaft mode;
the primary driving gear 12 is connected to the motor 10 through a motor shaft 11;
the primary driven gear 13 and the secondary driving gear 15 are connected to the parallel shaft 14;
a primary driven gear 16 and a secondary driving gear 18 are connected to a parallel shaft 17;
the secondary driven gear 19, the first sun gear 20 and the intermediate shaft engaging teeth 25 are connected to an intermediate shaft 24;
the synchronous gear sleeve C1 is connected with the second sun gear 26;
the second carrier 29 is connected to the differential 26;
the first ring gear 22 and the second ring gear 28 are fixed to the case.
Further, as shown in fig. 2, the first forward gear power transmission process is:
the first-stage driving gear 12 is connected to the motor 10 through a motor shaft 11, the first-stage driving gear 12 is meshed with the first-stage driven gears 13 and 16 at the same time, the second-stage driven gear 13 and the second-stage driving gear 15 are connected to the parallel shaft 14, the first-stage driven gear 16 and the second-stage driving gear 18 are connected to the parallel shaft 17, and power of the motor 10 is transmitted to the second-stage driving gears 15 and 18 through the first-stage driven gears 13 and 16 and the parallel shafts 14 and 17 to achieve first-stage speed reduction.
The secondary driving gears 15 and 18 are simultaneously meshed with the secondary driven gear 19, the first sun gear 20 and the intermediate shaft joint teeth 25 are connected to the intermediate shaft 24, and power is transmitted to the first sun gear 20 through the secondary driven gear 19 and the intermediate shaft 24 to realize secondary speed reduction.
The synchronous gear sleeve C1 is shifted to the left side, so that the first planet carrier 23 and the synchronous gear sleeve C1 are connected into a whole, the synchronous gear sleeve C1 is connected with the second sun gear 26, and power is transmitted to the second sun gear 26 from the first sun gear 20 through the first planet carrier 23 and the synchronous gear sleeve C1, so that third-stage speed reduction is realized.
The second planetary carrier 29 is connected to the differential 30, and power is transmitted from the second sun gear 26 to the differential 30 through the second planetary carrier 29, thereby realizing a fourth speed reduction.
After being distributed by the differential, the power is transmitted to the wheels on two sides through a long half shaft 31 and a short half shaft 32 respectively.
Further, as shown in fig. 3, the second forward speed power transmission process is:
the first-stage driving gear 12 is connected to the motor 10 through a motor shaft 11, the first-stage driving gear 12 is meshed with the first-stage driven gears 13 and 16 at the same time, the second-stage driven gear 13 and the second-stage driving gear 15 are connected to the parallel shaft 14, the first-stage driven gear 16 and the second-stage driving gear 18 are connected to the parallel shaft 17, and power of the motor 10 is transmitted to the second-stage driving gears 15 and 18 through the first-stage driven gears 13 and 16 and the parallel shafts 14 and 17 to achieve first-stage speed reduction.
The secondary driving gears 15 and 18 are meshed with the secondary driven gear 19 at the same time, the secondary driven gear 19, the first sun gear 20 and the intermediate shaft joint teeth 25 are connected to the intermediate shaft 24, and power is transmitted to the intermediate shaft joint teeth 25 through the secondary driven gear 19 and the intermediate shaft 24 to realize secondary speed reduction.
The synchronous gear sleeve C1 is shifted to the right side, so that the intermediate shaft joint gear 25 and the synchronous gear sleeve C1 are connected into a whole, the synchronous gear sleeve C1 is connected with the second sun gear 26, power is transmitted to the second sun gear 26 from the intermediate shaft joint gear 25 through the synchronous gear sleeve C1, and direct transmission is realized without speed change.
The second planet carrier 29 is connected with the differential 30, and power is transmitted to the differential 30 from the second sun gear 26 through the second planet carrier 29, so that third-stage speed reduction is realized.
After being distributed by the differential, the power is transmitted to the wheels on two sides through a long half shaft 31 and a short half shaft 32 respectively.
Further, the power transmission process of the neutral gear is as follows:
the synchronous gear sleeve C1 is shifted to the middle, so that the power can be interrupted in the middle of the two planet rows, and neutral gear is realized.
Further, the power transmission process of the reverse gear is as follows:
the motor is controlled to rotate reversely, the synchronous gear sleeve C1 is shifted to the left side, the power transmission process is consistent with the first forward gear, the output steering is opposite, and reverse gear is achieved.
The utility model discloses can obtain following one or more technological effect:
1. single-motor coaxial transmission is adopted, the size is small, the weight is light, and the space utilization rate is high;
2. the novel synchronizer arrangement is adopted, the three-gear switching is realized, and the control is simple and convenient;
3. the double-planet-row transmission series connection work is adopted, the high-speed stage is one planet row transmission, the low-speed stage is two planet row transmissions, and the mode has the advantages of compact structure, convenience in assembly and high transmission efficiency.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a single motor coaxial-type double planet row electric drive axle system which characterized in that includes:
a motor having a motor shaft;
the primary driving gear is connected with the motor shaft;
the first parallel shaft is connected with a first primary driven gear and a first secondary driving gear;
the second parallel shaft is connected with a second primary driven gear and a second secondary driving gear;
the intermediate shaft is fixedly connected with a secondary driven gear, a first planet row and intermediate shaft combination teeth in sequence;
the second planet row is connected with a synchronous gear sleeve, and the synchronous gear sleeve can be switched between a first position and a second position; and
the differential is connected with a first output half shaft and a second output half shaft and is connected with a planet carrier of the second planet row;
the first primary driven gear and the second primary driven gear are meshed with the first driving gear, the second driven gear is meshed with the first secondary driving gear and the second secondary driving gear respectively, the synchronous gear sleeve is connected with a planet carrier of the first planet row when located at the first position, and the synchronous gear sleeve is connected with the intermediate shaft combined gear when located at the second position.
2. The single-motor coaxial double-planet-row electric drive axle system according to claim 1, wherein the motor, the motor shaft, the intermediate shaft, the second planet row and the differential are arranged in sequence and coaxial with each other.
3. The single-motor coaxial double-planetary-row electric drive axle system according to claim 2, wherein the first output half shaft passes through the centers of the second planetary rows and the intermediate shaft, the motor shaft, and the centers of the motors in sequence and then is connected with the wheels.
4. The single-motor coaxial double-planet-row electric drive axle system of claim 2, wherein the synchronizing sleeve is connected with the sun gear of the second planet row.
5. The single-motor coaxial double-planet-row electric drive axle system according to any one of claims 1 to 4, wherein the first planet row and the second planet row each comprise a sun gear, a planet gear, a ring gear and a planet carrier, and the ring gear is connected to the case.
6. The single-motor coaxial double-planet-row electric drive axle system according to claim 5, characterized in that it has a symmetrical structure about the first output half-axis.
7. The single-motor coaxial double-planet-row electric drive axle system according to claim 6, wherein the sun gear and the synchronizing cog sleeve of the second planet row are connected by a stub shaft.
8. The single-motor coaxial double-planet-row electric drive axle system according to claim 7, wherein the stub shaft is disposed between the countershaft and the differential and coaxial with the countershaft.
9. The single motor coaxial dual planet row electric drive axle system of claim 8, wherein the synchronizing sleeve is further switchable to an intermediate position wherein the synchronizing sleeve is disengaged from the planet carrier of the first planet row and the countershaft coupling teeth.
10. The single-motor coaxial double-planetary-row electric drive axle system according to claim 9, wherein the single-motor coaxial double-planetary-row electric drive axle system has a first forward gear, a second forward gear, a neutral gear, and a reverse gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142469.1U CN218112339U (en) | 2022-08-15 | 2022-08-15 | Single-motor coaxial double-planet-row electric drive axle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142469.1U CN218112339U (en) | 2022-08-15 | 2022-08-15 | Single-motor coaxial double-planet-row electric drive axle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218112339U true CN218112339U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222142469.1U Active CN218112339U (en) | 2022-08-15 | 2022-08-15 | Single-motor coaxial double-planet-row electric drive axle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218112339U (en) |
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2022
- 2022-08-15 CN CN202222142469.1U patent/CN218112339U/en active Active
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