CN115675041A - Electric drive bridge transmission structure with three forward gears - Google Patents
Electric drive bridge transmission structure with three forward gears Download PDFInfo
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- CN115675041A CN115675041A CN202211455456.8A CN202211455456A CN115675041A CN 115675041 A CN115675041 A CN 115675041A CN 202211455456 A CN202211455456 A CN 202211455456A CN 115675041 A CN115675041 A CN 115675041A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
There is provided an electric drive axle transmission structure having three forward gears, comprising: the primary speed reduction driving gear is used for receiving the power of the motor; a first shift unit; the intermediate shaft is fixedly connected with an A-gear driven gear, a B-gear driven gear and a planet row, and the A-gear driven gear is used for receiving the power of the A-gear driving gear; the first short shaft is sleeved outside the first power output half shaft in a relatively rotating manner and is fixedly connected with a second switching gear, and the second switching gear is meshed with the first switching gear; a second shifting unit; the C-gear driven gear is fixedly connected to the planet carrier of the planet row and used for receiving the power of the C-gear driving gear; and the differential is connected with the planet carrier of the planet row through a differential shell and outputs power to the first power output half shaft and the second power output half shaft. Can meet the high efficiency requirements of low gear high torque, high gear high speed and common working conditions.
Description
Technical Field
The invention relates to the field of new energy automobile parts, in particular to an electric drive bridge transmission structure with three forward gears.
Background
New energy automobiles are more and more valued by the nation. At present, most of electric drive bridges are of a single-gear or two-gear structure, in order to meet the requirements of power and vehicle speed, the single-gear structure has a high requirement on a motor, the requirement of high-torque climbing is met, the requirement of high vehicle speed is met, the motor needs to be made large, and the cost is high; although the requirements of high torque and high vehicle speed can be met at two gear positions, the requirement on a high-performance motor can be reduced, the compatibility of common working conditions is not friendly enough, the torque is enough during the first gear only to drive at a lower vehicle speed, the torque is smaller while the second gear is high, and a higher torque gear which can meet the requirements of low-speed high torque and high-speed low torque and can meet the requirements of common vehicle speed is urgently needed.
Therefore, there is a need to develop an electric drive axle transmission structure having three forward gears to solve one or more of the above-mentioned technical problems.
Disclosure of Invention
To solve at least one of the above-mentioned technical problems, according to an aspect of the present invention, there is provided an electric drive axle transmission structure having three forward gears, characterized by comprising:
the primary speed reduction driving gear is used for receiving the power of the motor;
a first shift unit comprising: the first parallel shaft is fixedly connected with a primary driven gear which is used for receiving power from a primary speed reduction driving gear; the gear A driving gear and the first transfer gear are sleeved on the first parallel shaft in a relatively rotating manner; the first gear shifter is arranged on the first parallel shaft and is used for selectively transmitting the power of the first parallel shaft to the A-gear driving gear or the first transfer gear;
the intermediate shaft is fixedly connected with an A-gear driven gear, a B-gear driven gear and a planet row, and the A-gear driven gear is used for receiving the power of the A-gear driving gear;
the first stub shaft is sleeved outside the first power output half shaft in a relatively rotatable manner and is fixedly connected with a second switching gear, and the second switching gear is meshed with the first switching gear;
a second shift unit comprising: the third switching gear is meshed with the second switching gear; a second shifter provided to the third changeover gear; the second parallel shaft is provided with a B-gear driving gear and a C-gear driving gear, the second gear shifter is used for selectively transmitting the power of the third transfer gear to the B-gear driving gear or the C-gear driving gear, and the B-gear driven gear is used for receiving the power of the B-gear driving gear;
the C-gear driven gear is fixedly connected to the planet carrier of the planet row and used for receiving the power of the C-gear driving gear; and
and the differential is connected with the planet carrier of the planet row through a differential shell and outputs power to the first power output half shaft and the second power output half shaft.
According to yet another aspect of the invention, the intermediate shaft and the first stub shaft are hollow shafts, and the first power output half shaft extends through the intermediate shaft and the first stub shaft in sequence to the wheel rim.
According to yet another aspect of the present invention, the first shifter is disposed between the a-range drive gear and the first transfer gear.
According to still another aspect of the present invention, the second shifter is disposed at one side of the combination of the B-range driving gear and the C-range driving gear.
According to yet another aspect of the invention, the second shifting unit further comprises:
the second short shaft can be sleeved outside the second parallel shaft in a relatively rotating manner, the B-gear driving gear is fixedly connected to the second short shaft, and the C-gear driving gear is fixedly connected to the second parallel shaft; and
the second parallel shaft engages the teeth and is fixedly attached to one end of the second parallel shaft.
According to another aspect of the invention, a power take-off is also connected to the second parallel shaft.
According to yet another aspect of the present invention, the second shifter is engageable with the second parallel shaft engaging teeth to transmit power of the third transfer gear to the second parallel shaft and the C-speed drive gear.
According to a further aspect of the invention, the planet row comprises a sun wheel, planet wheels, a planet carrier and a ring gear, which is connected to the housing.
According to another aspect of the present invention, the second parallel shaft is a hollow shaft and a transmission shaft is penetrated therein, and the third transfer gear is fixed to the transmission shaft.
According to a further aspect of the invention, the electric drive axle transmission with three forward gears further comprises a power take-off which is directly connected to the transmission shaft or receives power via a third transfer gear, the transmission gear and the further transmission shaft.
The invention can obtain one or more of the following technical effects:
1. the double-gear shifter structure can meet the limit working condition requirements of low gear, high torque and high speed of high gear, and can also meet the high efficiency requirements of common working conditions.
2. The double parallel shafts are arranged, so that the axial space is shortened, and the structural arrangement is convenient and compact.
3. The planet row is used as a torque final output structure, so that the bearing capacity is large, and the space is small.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic illustration of an electric drive axle transmission with three forward gears according to a preferred embodiment of the invention.
Fig. 2-4 are power transmission path schematic diagrams of three forward gears ABC of an electric drive axle configuration having three forward gears in accordance with another preferred embodiment of the present invention.
Fig. 5 to 6 are schematic views of an electric drive axle transmission with three forward gears according to a second and a third preferred embodiment of the invention.
Detailed Description
The best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is for the purpose of illustrating the invention in detail, and is not to be construed as limiting the invention, as various changes and modifications can be made therein without departing from the spirit and scope thereof, which are intended to be encompassed within the appended claims.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1 to 6, there is provided an electric drive axle transmission structure having three forward gears, characterized by comprising:
the primary speed reduction driving gear 03 is used for receiving the power of the motor 01;
a first shift unit comprising: a first parallel shaft 10 fixedly connected with a primary driven gear 04 for receiving power from a primary reduction driving gear; the A-gear driving gear 05 and the first transfer gear 07 are sleeved on the first parallel shaft in a relatively rotatable manner; a first shifter 09 disposed on the first parallel shaft and configured to selectively transmit power of the first parallel shaft to the a-range driving gear 05 or the first transfer gear 07;
the intermediate shaft 18 is fixedly connected with an A-gear driven gear 06, a B-gear driven gear 14 and a planet row, and the A-gear driven gear 06 is used for receiving the power of the A-gear driving gear 05;
the first stub shaft is sleeved outside the first power output half shaft 26 in a relatively rotatable manner and is fixedly connected with a second switching gear 08, and the second switching gear 08 is meshed with the first switching gear 07;
a second shift unit comprising: a third transfer gear 11 meshed with the second transfer gear 08; a second shifter 17 provided to the third transfer gear 11; a second parallel shaft 19 provided with a B-gear driving gear 13 and a C-gear driving gear 15, the second shifter 17 for selectively transmitting the power of the third transfer gear 11 to the B-gear driving gear 13 or the C-gear driving gear 15, the B-gear driven gear 14 for receiving the power of the B-gear driving gear 13;
a C-range driven gear 16 fixedly connected to the carrier of the planetary row and receiving power of the C-range driving gear 15; and
the differential, which is connected to the planet carrier of the planetary row via a differential housing 24, outputs power to a first power output axle shaft 26 and a second power output axle shaft 27.
In accordance with yet another preferred embodiment of the present invention, the intermediate shaft 18 and the first stub shaft are hollow shafts, and the first power take-off half shaft 26 extends through the intermediate shaft 18 and the first stub shaft in sequence to the wheel rim.
According to still another preferred embodiment of the present invention, the first shifter 09 is disposed between the a-range driving gear 05 and the first transfer gear 07.
According to still another preferred embodiment of the present invention, the second shifter 17 is disposed at one side of the combination of the B-range driving gear 13 and the C-range driving gear 15.
According to still another preferred embodiment of the present invention, the second shift unit further includes:
the second short shaft is sleeved outside the second parallel shaft 19 in a relatively rotating manner, the B-gear driving gear 13 is fixedly connected to the second short shaft, and the C-gear driving gear 15 is fixedly connected to the second parallel shaft; and
the second parallel shaft engages the teeth and is fixedly attached to one end (the left end shown in fig. 1) of the second parallel shaft.
According to a further preferred embodiment of the invention, a power take-off 20 is also connected to the second parallel shaft.
According to still another preferred embodiment of the present invention, the second shifter 17 is engageable with the second parallel shaft engaging teeth to transmit the power of the third transfer gear 11 to the second parallel shaft 19 and the C-speed driving gear 15.
According to a further preferred embodiment of the invention, the planetary row comprises a sun wheel 21, planet wheels 22, a planet carrier and a ring wheel 23, the ring wheel 23 being connected to the casing.
According to another preferred embodiment of the present invention, referring to fig. 5 to 6, the second parallel shaft is a hollow shaft and a transmission shaft is penetrated inside, and the third transfer gear is fixed to the transmission shaft.
According to a further preferred embodiment of the present invention, the electric transaxle transmission structure having three forward gears further includes a power take-off directly connected to the transmission shaft (as shown in fig. 5) or receiving power via a third transfer gear, a transmission gear and another transmission shaft (as shown in fig. 6).
According to another preferred embodiment of the invention, a three-gear electric drive bridge transmission structure which is convenient to arrange, safe and reliable is provided for a new energy commercial vehicle, and is characterized in that:
the motor 01 is connected with a first-level speed reduction driving gear 03 through a motor shaft 02, the first-level driving gear 03 is meshed with a first-level driven gear 04, the first-level driven gear 04 is installed on a first parallel shaft 10, a first gear shifter 09, an A gear driving gear 05 and a through-connection gear A07 are further installed on the first parallel shaft 10, the first gear shifter can slide left and right on the first parallel shaft, when the first gear shifter 09 slides left, the first gear shifter 09 is connected with the through-connection gear A07, and when the first gear shifter 09 slides right, the first gear shifter 09 is connected with the A gear driving gear 05. The switching gear A07 is meshed with the switching gear B08, the switching gear B08 is meshed with the switching gear C11, and three gears of the switching gear A/B/C (the first switching gear A, the second switching gear B and the third switching gear C) form a triple gear. The gear a driving gear 05 is engaged with the gear a driven gear 06, the gear a driven gear 06 is mounted on the intermediate shaft 18, and the gear B driven gear 14 and the sun gear 21 are further mounted on the intermediate shaft 18. The driven gear 14 of the gear B is meshed with the driving gear 13 of the gear B, the driving gear 13 of the gear B is installed on a second parallel shaft 19, a driving gear 15 of the gear C and a power takeoff 20 are also installed on the second parallel shaft 19, and the power takeoff can be arranged according to a specific space structure and can also be not provided with the structure of the power takeoff 20. The C-gear driving gear 15 is meshed with a C-gear driven gear 16, and the C-gear driven gear 16 is fixed with the planet carrier. The second shifter 17 is also mounted on the transfer gear C11, the second shifter 17 is axially slidable along the transfer gear C11, the second shifter 17 is engaged with the B-range driving gear 13 when the second shifter 17 is slid to the right, and the second shifter 17 is engaged with the C-range driving gear 15 when the second shifter 17 is slid to the left. The sun wheel 21 meshes with planet wheels 22, the planet wheels 22 mesh with a ring wheel 23, and the ring wheel 23 is mounted on the housing. The planetary frame is fixed to a differential 24, which is connected to a left axle shaft 26 and a right axle shaft 27 via left and right sun gears, respectively, and fixed teeth of a differential lock 25 are mounted at one end of the differential, sliding teeth of the differential lock 25 are mounted on the right axle shaft, and the left and right axle shafts 26/27 are connected to left and right wheel rims, respectively.
The working principle of the invention is as follows.
A gear:
with reference to fig. 2, power on a motor 01 is transmitted to a primary reduction driving gear 03 through a motor shaft 02, the primary reduction driving gear 03 is engaged with a primary reduction driven gear 04, the primary reduction driven gear 04 is mounted on a first parallel shaft 10, a first gear shifter 09, an a-gear driving gear 05 and a transfer gear a07 are further mounted on the first parallel shaft 10, when the first gear shifter 09 slides rightwards, the power on the primary reduction driving gear 03 is transmitted to the first parallel shaft 10 through the primary reduction driven gear 04 engaged with the first gear shifter 09, and as the first gear shifter 09 slides rightwards to be engaged with the a-gear driving gear 05, the power is transmitted to an a-gear driven gear 06 engaged with the a-gear driving gear 05. The driven gear 06 of the a-gear is mounted on the intermediate shaft 18, and the driven gear 14 of the B-gear and the sun gear 21 are also mounted on the intermediate shaft 18. The power of the a-stage driven gear 06 is transmitted to the sun gear 21 through the intermediate shaft 18. Sun gear 21 meshes with planet wheel 22, planet wheel 22 meshes with ring gear 23, ring gear 23 is fixed with the casing, above-mentioned planet wheel 22 through the round pin hub connection on the planet carrier, the planet carrier is as an organic whole with differential mechanism 24's casing, consequently power on the sun gear passes through planet wheel 22 and transmits to the differential case on the planet carrier on, differential mechanism 24 passes through internal gear with power transmission to controlling the semi-axis, until transmitting to controlling the wheel edge, accomplish the power transmission that A kept off.
B, gear shifting:
referring to fig. 3, the power of the motor 01 is transmitted to the primary reduction driving gear 03 through the motor shaft 02, the primary reduction driving gear 03 is engaged with the primary reduction driven gear 04, the primary reduction driven gear 04 is installed on the first parallel shaft 10, the first parallel shaft 10 is also provided with the first gear shifter 09, the a-gear driving gear 05 and the transfer gear a07, when the first gear shifter 09 slides to the left, the power of the primary reduction driving gear 03 is transmitted to the first parallel shaft 10 through the primary reduction driven gear 04 engaged therewith, as the first gear shifter 09 slides to the left and is engaged with the transfer gear a07, the power is transmitted to the transfer gear B08 engaged with the transfer gear a07, the transfer gear B08 is also engaged with the transfer gear C11, the transfer gear C11 is provided with the second gear shifter 17, when the second gear shifter 17 slides to the right, the second gear shifter 17 is engaged with the B-gear driving gear 13 installed on the second parallel shaft 19, and the power of the transfer gear B08 is transmitted to the second gear shifter 17 through the triple gear shift 17, because the second gear shifter 17 is engaged with the power B13 and the driving gear 13B 13. The B-range driving gear 13 is engaged with a B-range driven gear 14 mounted on an intermediate shaft 18, a sun gear 21 is connected to the end of the intermediate shaft, and the power of the B-range driving gear 13 is transmitted to the sun gear 21 through the B-range driven gear 14 and the intermediate shaft 18 engaged therewith. Sun gear 21 meshes with planet wheel 22, planet wheel 22 meshes with ring gear 23, ring gear 23 is fixed with the casing, above-mentioned planet wheel 22 through the round pin hub connection on the planet carrier, the planet carrier is as an organic whole with differential mechanism 24's casing, therefore power on the sun gear passes through planet wheel 22 and transmits to the differential case on the planet carrier on, differential mechanism 24 passes through internal gear with power transmission to controlling the semi-axis, until transmitting to controlling the wheel edge.
C, gear shifting:
referring to fig. 4, power of a motor 01 is transmitted to a primary reduction driving gear 03 through a motor shaft 02, the primary reduction driving gear 03 is engaged with a primary reduction driven gear 04, the primary reduction driven gear 04 is installed on a first parallel shaft 10, a first shifter 09, an a-gear driving gear 05 and a transfer gear a07 are also installed on the first parallel shaft 10, when the first shifter 09 slides leftward, power of the primary reduction driving gear 03 is transmitted to the first parallel shaft 10 through the primary reduction driven gear 04 engaged therewith, as the first shifter 09 slides leftward, the power is transmitted to a transfer gear B08 engaged with the transfer gear a07, the transfer gear B08 is also engaged with a transfer gear C11, a second shifter 17 is installed on the transfer gear C11, when the second shifter 17 slides leftward, the second shifter 17 is engaged with a C-gear driving gear 15 installed on a second parallel shaft 19, and power of the transfer gear B08 is transmitted to the second shifter 17 through triple gears, because the second shifter 17 is engaged with the C-gear driving gear 15, and the power is transmitted to the C-gear driving gear 15. The C-range driving gear 15 is engaged with a C-range driven gear 16 mounted on the planetary frame, the C-range driven gear 16 is mounted on the planetary frame, and the planetary carrier is integrated with the housing of the differential 24, so that the power on the C-range driving gear 15 is transmitted to the differential 24 through the C-range driven gear 16 and the planetary frame engaged with the C-range driving gear, and the differential 24 transmits the power to the left and right half shafts through the internal gear until the power is transmitted to the left and right wheel sides.
The above transmission is a preferred example, the transmission structure of the present patent is not limited to the above examples, and any other modifications that can realize the connection relationship and connection principle of the structure described in the present patent are considered as the same as the present patent, for example, the modifications shown in fig. 5 to 6, etc. The main variation of the example of fig. 5 is that the power take-off 20 is mounted on the transfer gear C11 through the B-gear driving gear 13 and the C-gear driving gear 15, and the rest of the structure is the same as that of the example of fig. 1. The main variation of the example of fig. 6 is to engage the power take-off 20 with the transfer gear C11 by adding a gear, and the rest of the structure is the same as that of the example of fig. 5.
The invention can obtain one or more of the following technical effects:
1. the double-gear shifter structure can meet the requirements of low gear, high torque and high speed limiting working conditions of high gear and can also meet the high efficiency requirements of common working conditions.
2. The double parallel shafts are arranged, so that the axial space is shortened, and the structural arrangement is convenient and compact.
3. The planet row is used as a torque final output structure, so that the bearing capacity is large, and the space is small.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An electric drive axle transmission structure with three forward gears is characterized by comprising:
the primary speed reduction driving gear is used for receiving the power of the motor;
a first shift unit comprising: the first parallel shaft is fixedly connected with a primary driven gear which is used for receiving power from a primary speed reduction driving gear; the gear A driving gear and the first transfer gear are sleeved on the first parallel shaft in a relatively rotating manner; the first shifter is arranged on the first parallel shaft and is used for selectively transmitting the power of the first parallel shaft to the A-gear driving gear or the first transfer gear;
the intermediate shaft is fixedly connected with an A-gear driven gear, a B-gear driven gear and a planet row, and the A-gear driven gear is used for receiving the power of the A-gear driving gear;
the first stub shaft is sleeved outside the first power output half shaft in a relatively rotatable manner and is fixedly connected with a second switching gear, and the second switching gear is meshed with the first switching gear;
a second shift unit comprising: the third switching gear is meshed with the second switching gear; a second shifter provided to the third changeover gear; the second parallel shaft is provided with a B-gear driving gear and a C-gear driving gear, the second gear shifter is used for selectively transmitting the power of the third transfer gear to the B-gear driving gear or the C-gear driving gear, and the B-gear driven gear is used for receiving the power of the B-gear driving gear;
the C-gear driven gear is fixedly connected to the planet carrier of the planet row and used for receiving the power of the C-gear driving gear; and
and the differential is connected with the planet carrier of the planet row through a differential shell and outputs power to the first power output half shaft and the second power output half shaft.
2. The electric drive axle transmission having three forward gears of claim 1 wherein the intermediate shaft and the first stub shaft are hollow shafts and the first power take off half shaft extends through the intermediate shaft and the first stub shaft in sequence to the wheel rim.
3. The electric drive axle transmission having three forward gears of claim 2 wherein the first shifter is disposed between the a-gear drive gear and the first transfer gear.
4. The electric transaxle transmission having three forward speeds of any one of claims 1 to 3 wherein the second shifter is provided to one side of the combination of the B speed drive gear and the C speed drive gear.
5. The electric drive axle transmission having three forward gears of claim 4, wherein the second shift unit further comprises:
the second short shaft can be sleeved outside the second parallel shaft in a relatively rotating manner, the B-gear driving gear is fixedly connected to the second short shaft, and the C-gear driving gear is fixedly connected to the second parallel shaft; and
the second parallel shaft engages the teeth and is fixedly attached to one end of the second parallel shaft.
6. The electric drive axle transmission with three forward gears of claim 5, wherein a power take-off is connected to the second parallel shaft.
7. The electric drive axle transmission having three forward gears of claim 5 wherein the second shifter is engageable with the second parallel shaft engaging teeth to transfer power from the third transfer gear to the second parallel shaft and the C-speed drive gear.
8. The electric drive axle transmission with three forward gears of claim 7 wherein the planetary gear row comprises a sun gear, planetary gears, a planet carrier and a ring gear, the ring gear being connected to the housing.
9. The electric drive axle transmission structure having three forward gears according to claim 5, wherein the second parallel shaft is a hollow shaft and has a transmission shaft passing through the inside thereof, and the third transfer gear is fixed to the transmission shaft.
10. The electric drive axle transmission having three forward gears of claim 7 further comprising a power take-off directly connected to the drive shaft or receiving power via a third transfer gear, a transfer gear and another drive shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211455456.8A CN115675041A (en) | 2022-11-21 | 2022-11-21 | Electric drive bridge transmission structure with three forward gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211455456.8A CN115675041A (en) | 2022-11-21 | 2022-11-21 | Electric drive bridge transmission structure with three forward gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115675041A true CN115675041A (en) | 2023-02-03 |
Family
ID=85053417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211455456.8A Pending CN115675041A (en) | 2022-11-21 | 2022-11-21 | Electric drive bridge transmission structure with three forward gears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115675041A (en) |
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2022
- 2022-11-21 CN CN202211455456.8A patent/CN115675041A/en active Pending
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