CN218287418U - Two-gear electric drive axle for commercial vehicle - Google Patents
Two-gear electric drive axle for commercial vehicle Download PDFInfo
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- CN218287418U CN218287418U CN202222636164.6U CN202222636164U CN218287418U CN 218287418 U CN218287418 U CN 218287418U CN 202222636164 U CN202222636164 U CN 202222636164U CN 218287418 U CN218287418 U CN 218287418U
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Abstract
There is provided a two-gear electric drive axle for a commercial vehicle, comprising: the first gear is connected with the first motor; a first parallel shaft provided with a second gear and a third gear; the intermediate shaft is fixedly connected with a fourth gear, a first planet row and intermediate shaft joint teeth in sequence; the differential is connected with a first output half shaft, a second output half shaft and a connecting shaft; the first wheel-side speed reducing mechanism is connected between the first output half shaft and the first wheel; the second wheel side speed reducing mechanism is connected between the second output half shaft and a second wheel; the fifth gear is connected with the second motor; the second parallel shaft is provided with a sixth gear and a seventh gear; and a synchronizer switchable between a first position and a second position. Motor power passes through the parallel shaft and excessively arrives on the jackshaft for whole system arranges more in a flexible way, through the angle between adjustment motor shaft, parallel shaft and the jackshaft, can make full use of space, reduces system size.
Description
Technical Field
The utility model relates to a new energy automobile spare part field especially relates to a two keep off electric drive axle for commercial automobile.
Background
Along with the deepening of the new energy strategy of the country, the new energy passenger vehicle is gradually becoming the mainstream motorcycle type, but the electric progress of commercial vehicle is lagged behind a lot compared with the passenger vehicle, the current mainstream new energy commercial vehicle is still based on the central driving form that the fuel vehicle structure transformation of transmission came, mainly change transmission engine and gearbox power assembly into motor and gearbox power assembly, transmission shaft and transaxle have been kept, this kind of structure integration degree is lower, high efficiency, and owing to kept the transmission shaft, more chassis space has been taken up, can't arrange power battery in a large number on the chassis.
How to improve electric drive axle's integrated level, how rationally arrange transmission system structure, how abundant utilization space, reduce system size, increase the ground clearance of bridge, improve the mechanical efficiency of system etc. all are the problem that the industry is urgent to solve.
Therefore, there is a need to develop a two-speed electric transaxle for a commercial vehicle 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 two keep off electric drive axle for commercial vehicle, its characterized in that includes:
the first gear is connected with the first motor;
a first parallel shaft provided with a second gear and a third gear;
the intermediate shaft is fixedly connected with a fourth gear, a first planet row and intermediate shaft engaging teeth in sequence;
the differential is connected with a first output half shaft, a second output half shaft and a connecting shaft;
the first wheel-side speed reducing mechanism is connected between the first output half shaft and the first wheel;
the second wheel-side speed reducing mechanism is connected between a second output half shaft and a second wheel;
the fifth gear is connected with the second motor;
the second parallel shaft is provided with a sixth gear and a seventh gear; and
a synchronizer switchable between a first position and a second position;
the first gear is meshed with the second gear, the third gear and the seventh gear are respectively meshed with the fourth gear, and the fifth gear is meshed with the sixth gear; the synchronizer engages the first carrier of the first planetary row with the connecting shaft when in the first position and engages the countershaft engaging teeth with the connecting shaft when in the second position.
According to yet another aspect of the present invention, the first electric machine and the second electric machine are arranged in parallel to the first output half shaft.
According to a further aspect of the invention, the first and second parallel shafts are arranged parallel to the first output half shaft.
According to a further aspect of the invention, the synchronizer is also switchable to an intermediate position and disengaged from the first planet carrier and the intermediate shaft engaging teeth of the first planet row.
According to a further aspect of the invention, the first hub reduction mechanism comprises a second planetary row and the second hub reduction mechanism comprises a third planetary row.
According to another aspect of the present invention, the first planetary row includes a first sun gear, a first planet gear, a first ring gear, and a first carrier, the first ring gear being connected to the case.
According to the utility model discloses in another aspect, the second planet row includes second sun gear, second planet wheel, second ring gear and second planet carrier, and the second ring gear is connected in the box.
According to the utility model discloses a third sun gear, third planet wheel, third ring gear and third planet carrier are arranged to the second planet, and the third ring gear is connected in the box.
According to yet another aspect of the present invention, the first wheel, the first hub reduction mechanism, the second gear, the fourth gear, the first planetary row, the counter shaft engaging teeth, the connecting shaft, the differential, the second hub reduction mechanism, and the second wheel are arranged in order along a first direction parallel to the first output half shaft.
According to yet another aspect of the present invention, the first gear, the fifth gear and the sixth gear are arranged coplanar with the second gear; the third gear and the seventh gear are disposed coplanar with the fourth gear.
The utility model discloses can obtain following one or more technological effect:
1. the double motors are arranged in parallel for driving, so that the sizes of the motors and the gears can be reduced, the cost of the motors is reduced, and the arrangement of the motors is facilitated;
2. the power of the motor is transmitted to the intermediate shaft through the parallel shaft, so that the whole system is more flexible in arrangement, the space can be fully utilized and the size of the system can be reduced by adjusting the angles among the motor shaft, the parallel shaft and the intermediate shaft, and the motor with different radial sizes and motors with different rotating speeds can be adapted by adjusting the center distance between the motor shaft and the parallel shaft and the center distance between the parallel shaft and the intermediate shaft;
3. after the power of the motor passes through the 1-level motor reduction gear, the power is transmitted to the intermediate shaft through 2-level reduction of the set of fixed shaft gears, the structure is simple, and the arrangement is reasonable;
4. after 2-stage speed reduction, the torque is often larger, so that the 3-stage speed reduction gear is designed into a planet row form, the sun gear of the planet row is used as an input end, the planet frame is used as an output end, the large torque can be borne, and the large speed reduction ratio is realized;
5. different speed ratios can be realized by connecting the output ends with different structures of the planetary rows, so that high and low gears are realized, and the requirements of the vehicle on power and vehicle speed are met; when the output end is connected with the sun gear of the planet row, the planet row is in an idle state, the power is directly output by the sun gear, the transmission of a first-stage gear is reduced, and the mechanical loss can be reduced while the vehicle obtains high speed.
6. 4-level reduction is set for obtaining large torque power, and 4-level reduction gears are also designed in a planet row and are placed beside wheels, so that the structure of a traditional wheel reduction axle can be adopted, the development cost is reduced, and the structural size of a middle gearbox of an electric drive axle can be reduced.
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 view of a two-speed electric drive axle for a commercial vehicle 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 two-gear electric drive axle for a commercial vehicle, characterized by comprising:
the first gear 03 is connected with the first motor 01;
a first parallel shaft 05 provided with a second gear 04 and a third gear 06;
the intermediate shaft 08 is fixedly connected with a fourth gear 07, a first planet row and intermediate shaft joint teeth 19 in sequence;
a differential to which are connected a first output half shaft 30, a second output half shaft 24 and a connecting shaft 21;
a first wheel reduction mechanism connected between the first output axle shaft 30 and the first wheel 35;
a second wheel reduction mechanism coupled between the second output axle shaft 24 and a second wheel 29;
a fifth gear 13 connected to the second motor 11;
a second parallel shaft 15 provided with a sixth gear 14 and a seventh gear 16; and
a synchronizer 20 switchable between a first position and a second position;
wherein, the first gear 03 is meshed with the second gear 04, the third gear 06 is meshed with the fourth gear 07, the seventh gear 16 is meshed with the fourth gear 07, and the fifth gear 13 is meshed with the sixth gear 14; the synchronizer 20 engages the first carrier 18 of the first planetary row with the connecting shaft 21 when in the first position, and the synchronizer 20 engages the countershaft engagement teeth 19 with the connecting shaft 21 when in the second position.
Preferably, the first gear 03 is connected to a first output shaft 02 of the first electric machine 01. The fifth gear 13 is connected to the second output shaft 12 of the second motor 11.
Preferably, the differential includes a differential gear 23 and a differential case 22.
According to a further preferred embodiment of the present invention, the first electric machine 01 and the second electric machine 11 are arranged in parallel to the first output half shaft 30.
According to a further preferred embodiment of the invention, said first and second parallel shafts 05, 15 are arranged parallel to the first output half shaft 30.
According to a further preferred embodiment of the invention, the synchronizer 20 is also switchable to a neutral position and disengaged from the first planet carrier 18 and the intermediate shaft engaging teeth 19 of the first planet row.
According to a further preferred embodiment of the present invention, the first wheel reduction mechanism includes a second planetary row, and the second wheel reduction mechanism includes a third planetary row.
According to a further preferred embodiment of the present invention, the first planetary row comprises a first sun gear 09, a first planet gear 10, a first ring gear 17 and a first planet carrier 18, the first ring gear 17 being connected to the casing.
According to a further preferred embodiment of the present invention, the second planetary gear set comprises a second sun gear 31, a second planet gear 32, a second ring gear 33 and a second planet carrier 34, the second ring gear 33 being connected to the housing.
According to a further preferred embodiment of the present invention, the third planetary row comprises a third sun gear 25, a third planetary gear 26, a third ring gear 27 and a third planet carrier 28, the third ring gear 27 being connected to the casing.
According to a further preferred embodiment of the present invention, the first wheel 35, the first wheel reduction mechanism, the second gear 04, the fourth gear 07, the first planetary row, the intermediate shaft engaging teeth 19, the connecting shaft 21, the differential, the second wheel reduction mechanism and the second wheel 29 are arranged in sequence along a first direction parallel to the first output half shaft 30.
According to a further preferred embodiment of the present invention, the first gear 03, the fifth gear 13 and the sixth gear 14 are arranged coplanar with the second gear 04; the third gear 06 and the seventh gear 16 are arranged coplanar with the fourth gear 07.
The utility model discloses can obtain following one or more technological effect:
1. the double motors are arranged in parallel for driving, so that the sizes of the motors and the gears can be reduced, the cost of the motors is reduced, and the arrangement of the motors is facilitated;
2. the power of the motor is transmitted to the intermediate shaft through the parallel shaft, so that the whole system is more flexible in arrangement, the space can be fully utilized and the size of the system can be reduced by adjusting the angles among the motor shaft, the parallel shaft and the intermediate shaft, and the motor with different radial sizes and motors with different rotating speeds can be adapted by adjusting the center distance between the motor shaft and the parallel shaft and the center distance between the parallel shaft and the intermediate shaft;
3. after the power of the motor passes through the 1-level motor reduction gear, the power is transmitted to the intermediate shaft through 2-level reduction of the set of fixed shaft gears, the structure is simple, and the arrangement is reasonable;
4. after 2-stage speed reduction, the torque is usually larger, so that the 3-stage reduction gear is designed into a planet row form, the sun gear of the planet row is used as an input end, and the planet frame is used as an output end, so that the large torque can be borne, and the large reduction ratio is realized;
5. different speed ratios can be realized by connecting the output ends with different structures of the planetary rows, so that high and low gears are realized, and the requirements of the vehicle on power and vehicle speed are met; when the output end is connected with the sun gear of the planet row, the planet row is in an idle state, the power is directly output by the sun gear, the transmission of a first-stage gear is reduced, and the mechanical loss can be reduced while the vehicle obtains high speed.
6. 4-stage speed reduction is set for obtaining large torque power, 4-stage speed reduction gears are also designed in a planetary row and are placed beside wheels, a structure of a traditional wheel reduction axle can be adopted, development cost is reduced, and the structural size of a middle gearbox of an electric drive axle can be reduced.
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. A two-speed electric drive axle for a commercial vehicle, comprising:
the first gear is connected with the first motor;
a first parallel shaft provided with a second gear and a third gear;
the intermediate shaft is fixedly connected with a fourth gear, a first planet row and intermediate shaft joint teeth in sequence;
the differential is connected with a first output half shaft, a second output half shaft and a connecting shaft;
the first wheel side speed reducing mechanism is connected between the first output half shaft and the first wheel;
the second wheel side speed reducing mechanism is connected between the second output half shaft and a second wheel;
the fifth gear is connected with the second motor;
the second parallel shaft is provided with a sixth gear and a seventh gear; and
a synchronizer switchable between a first position and a second position;
the first gear is meshed with the second gear, the third gear and the seventh gear are respectively meshed with the fourth gear, and the fifth gear is meshed with the sixth gear; the synchronizer engages the first carrier of the first planetary row with the connecting shaft when in the first position and engages the countershaft engaging teeth with the connecting shaft when in the second position.
2. Two-gear electric drive axle for a commercial vehicle according to claim 1, characterized in that the first electric machine and the second electric machine are arranged parallel to the first output half shaft.
3. Two-gear electric transaxle for a commercial vehicle as defined in claim 2 wherein said first and second parallel shafts are disposed parallel to the first output half shaft.
4. Two-gear electric drive axle for a commercial vehicle according to claim 3, characterized in that the synchronizer can also be switched to a neutral position and disengaged from the first carrier and countershaft engaging teeth of the first planetary row.
5. Two-gear electric transaxle for commercial vehicles according to any one of claims 1-4 wherein the first hub reduction mechanism comprises a second planetary gear set and the second hub reduction mechanism comprises a third planetary gear set.
6. Two-speed electric drive axle for commercial vehicles according to claim 5, characterized in that the first planetary row comprises a first sun wheel, a first planet wheel, a first ring gear and a first planet carrier, the first ring gear being connected to the casing.
7. Two-gear electric drive axle for a commercial vehicle according to claim 6, characterized in that the second planetary gear row comprises a second sun gear, second planetary gears, a second ring gear and a second planet carrier, the second ring gear being connected to the housing.
8. The two-speed electric drive axle for a commercial vehicle according to claim 6, wherein the second planetary row includes a third sun gear, a third planetary gear, a third ring gear, and a third carrier, the third ring gear being connected to the case.
9. Two-gear electric transaxle for commercial vehicles as defined in claim 6 wherein the first wheel, the first hub reduction mechanism, the second gear, the fourth gear, the first planetary row, the intermediate shaft engaging teeth, the connecting shaft, the differential, the second hub reduction mechanism and the second wheel are arranged in sequence along a first direction parallel to the first output half shaft.
10. Two-gear electric drive axle for commercial vehicles according to claim 9, characterized in that the first, fifth and sixth gear wheels are arranged coplanar with the second gear wheel; the third gear and the seventh gear are disposed coplanar with the fourth gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636164.6U CN218287418U (en) | 2022-10-08 | 2022-10-08 | Two-gear electric drive axle for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636164.6U CN218287418U (en) | 2022-10-08 | 2022-10-08 | Two-gear electric drive axle for commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218287418U true CN218287418U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222636164.6U Active CN218287418U (en) | 2022-10-08 | 2022-10-08 | Two-gear electric drive axle for commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218287418U (en) |
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- 2022-10-08 CN CN202222636164.6U patent/CN218287418U/en active Active
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