CN218702668U - Single-motor electric drive axle with wheel-side speed reducing mechanism - Google Patents
Single-motor electric drive axle with wheel-side speed reducing mechanism Download PDFInfo
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- CN218702668U CN218702668U CN202222711626.6U CN202222711626U CN218702668U CN 218702668 U CN218702668 U CN 218702668U CN 202222711626 U CN202222711626 U CN 202222711626U CN 218702668 U CN218702668 U CN 218702668U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 49
- 230000009467 reduction Effects 0.000 claims abstract description 25
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 210000000078 claw Anatomy 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
A single electric drive axle with a wheel reduction mechanism is provided, which is composed of the following components: the first gear is connected with a motor shaft of the single motor; the intermediate shaft is fixedly connected with a second gear, a first planet row and intermediate shaft joint teeth in sequence; the differential mechanism comprises a differential mechanism shell and a differential gear, wherein an input shaft is arranged on the differential mechanism shell, and the differential gear is connected with a first output half shaft and a second output half shaft; the synchronous gear sleeve is arranged on the input shaft and can be switched between a first position and a second position; the first wheel side speed reducing mechanism is connected with the first output half shaft; and the second wheel edge speed reducing mechanism is connected with the second output half shaft. The single motor is externally arranged, so that the space on one side of the electric drive bridge can be increased, and the arrangement of a power battery is facilitated.
Description
Technical Field
The utility model relates to a new energy automobile spare part field especially relates to a single motor drive axle with wheel limit reduction gears.
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, the current electric drive bridge is difficult to meet the requirements of different road conditions on power and vehicle speed, and has the disadvantages of complex structure, low transmission efficiency, heavy weight and high cost.
Furthermore, the applicant's pending patent zl202210977477.X provides a two-gear electric drive axle system, but the design of a two-motor electric drive axle, the arrangement of two motors thereof is not favorable for space saving, and cannot be adapted to the larger capacity/space arrangement of the power battery.
Accordingly, there is a need for a single electric drive axle having a wheel reduction mechanism that addresses one or more of the above-identified problems.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, according to the present invention, there is provided a single motor-driven axle having a hub reduction mechanism, comprising:
the first gear is connected with a motor shaft of the single motor;
the intermediate shaft is fixedly connected with a second gear, a first planet row and intermediate shaft joint teeth in sequence;
the differential mechanism comprises a differential mechanism shell and a differential gear, wherein an input shaft is arranged on the differential mechanism shell, and the differential gear is connected with a first output half shaft and a second output half shaft;
the synchronous gear sleeve is arranged on the input shaft and can be switched between a first position and a second position;
the first wheel side speed reducing mechanism is connected with the first output half shaft; and
the second wheel side speed reducing mechanism is connected with the second output half shaft;
wherein the first gear is engaged with the second gear, the synchronizing sleeve in a first position engaging the first carrier of the first planetary row, and the synchronizing sleeve in a second position engaging the countershaft engaging teeth.
According to another aspect of the present invention, the first hub reduction mechanism includes a second planetary row, and the second hub reduction mechanism includes a third planetary row.
According to another aspect of the present invention, the first output half shaft passes through the intermediate shaft and is connected to the first hub reduction mechanism.
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 the first carrier, the first ring gear is connected to the case.
According to another aspect of the present invention, the intermediate shaft engaging teeth and the engaging teeth provided on the first carrier are provided on the same side of the differential.
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, and first output semi-axis is connected in second sun gear, and the second planet carrier is connected to first wheel.
According to the utility model discloses in another aspect, the third planet row includes third sun gear, third planet wheel, third ring gear and third planet carrier, and the third ring gear is connected in the box, and second output semi-axis is connected in third sun gear, and the third planet carrier is connected to the second wheel.
According to a further aspect of the invention, the synchronizing sleeve can also be shifted to an intermediate position and disengaged from the first planet carrier and the counter shaft engaging teeth.
The utility model discloses can obtain following one or more technological effect:
the single motor is externally arranged, so that the space on one side of the electric drive bridge can be increased, and the arrangement of a power battery is facilitated;
the electric drive axle adopts a claw synchronizer to shift gears, and two engaging teeth are arranged on the same side of the differential mechanism, so that the electric drive axle is simple in structure, convenient to control and high in transmission efficiency;
and the wheel-side speed reducing mechanism is used, so that the speed reducing mechanism in the axle housing is simplified.
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 single electric motor drive axle having a wheel-side reduction mechanism according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the power transmission of the first forward gear of the single-motor electric drive axle with a wheel reduction mechanism according to a preferred embodiment of the present invention.
Fig. 3 is a second forward gear power transmission diagram of a single electric motor axle having a wheel reduction mechanism in accordance with 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
In accordance with a preferred embodiment of the present invention, and with reference to fig. 1-3, there is provided a single electric drive axle with a wheel reduction mechanism, characterized by consisting of:
a first gear 13 connected to the motor shaft 12 of the single motor 11;
an intermediate shaft 19 to which the second gear 14, the first planetary row and the intermediate shaft engaging teeth 20 are fixedly connected in sequence;
a differential 23 comprising a differential case provided with an input shaft 22 and a differential gear to which a first output half shaft 24 and a second output half shaft 25 are connected;
a synchronizing sleeve 21 provided on the input shaft 22 and switchable between a first position and a second position;
a first hub reduction mechanism connected to the first output axle shaft 24; and
the second wheel side speed reducing mechanism is connected with the second output half shaft 25;
wherein the first gear wheel 13 meshes with the second gear wheel 14, said synchronizing sleeve 21 in a first position engaging the first planet carrier 18 of the first planet row, said synchronizing sleeve 21 in a second position engaging the counter shaft engaging teeth 20.
According to a further preferred embodiment of the present invention, the first hub reduction mechanism includes a second planetary row, and the second hub reduction mechanism includes a third planetary row.
According to a further preferred embodiment of the invention, the first output half shaft 24 passes through the intermediate shaft 19 and is connected to the first wheel reduction mechanism.
According to a further preferred embodiment of the present invention, the first planetary row comprises a first sun gear 15, a first planet gear 16, a first ring gear 17 and said 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 intermediate shaft engagement teeth 20 and the engagement teeth provided on the first carrier 18 are provided on the same side of the differential 23.
According to a further preferred embodiment of the present invention, the second planetary gear train comprises a second sun gear 30, a second planetary gear 31, a second ring gear 32 and a second planetary carrier 33, the second ring gear 32 is connected to the box, the first output half shaft 24 is connected to the second sun gear 30, and the second planetary carrier 33 is connected to the first wheel 34.
According to a further preferred embodiment of the present invention, the third planetary row comprises a third sun wheel 26, a third planet wheel 28, a third ring gear 29 and a third planet carrier 27, the third ring gear 29 being connected to the box, the second output half shaft 25 being connected to the third sun wheel 26 and the third planet carrier 27 being connected to the second wheel 35.
According to a further preferred embodiment of the invention, the synchronizing sleeve 21 can also be shifted to a neutral position and disengaged from the first carrier 18 and the counter-shaft engaging teeth 20.
Referring to fig. 2, the first forward gear power transmission process, in which power is transmitted from the single motor 11 to the left and right wheels, is shown in thick black lines.
Referring to FIG. 3, a second forward gear power transfer process is illustrated. Further, shifting the synchronizing sleeve 21 to the middle, power interruption can be realized, thereby realizing neutral. The motor 11 is controlled to rotate reversely, the synchronous gear sleeve 21 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:
the single motor is externally arranged, so that the space on one side of the electric drive bridge can be increased, and the arrangement of a power battery is facilitated;
the electric drive axle adopts the claw type synchronizer to shift gears, and the two engaging teeth are arranged on the same side of the differential mechanism, so that the electric drive axle has the advantages of simple structure, convenience in control and high transmission efficiency;
and the wheel-side speed reducing mechanism is used, so that the speed reducing mechanism in the axle housing is simplified.
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 (8)
1. A single-motor electric drive axle with a wheel-side speed reducing mechanism is characterized by comprising the following components:
the first gear is connected with a motor shaft of the single motor;
the intermediate shaft is fixedly connected with a second gear, a first planet row and intermediate shaft joint teeth in sequence;
the differential mechanism comprises a differential mechanism shell and a differential gear, wherein an input shaft is arranged on the differential mechanism shell, and the differential gear is connected with a first output half shaft and a second output half shaft;
the synchronous gear sleeve is arranged on the input shaft and can be switched between a first position and a second position;
the first wheel side speed reducing mechanism is connected with the first output half shaft; and
the second wheel side speed reducing mechanism is connected with the second output half shaft;
wherein the first gear is engaged with the second gear, the synchronizing sleeve in a first position engaging the first carrier of the first planetary row, and the synchronizing sleeve in a second position engaging the countershaft engaging teeth.
2. The single electric transaxle having a wheel reduction mechanism of claim 1 wherein the first wheel reduction mechanism comprises a second planetary gear set and the second wheel reduction mechanism comprises a third planetary gear set.
3. The single motor electric drive axle with a wheel reduction mechanism according to claim 2, wherein said first output half shaft is connected to the first wheel reduction mechanism through said intermediate shaft.
4. The single-motor transaxle having a hub reduction mechanism according to any one of claims 1 to 3 wherein the first planetary gear set includes a first sun gear, a first planet gear, a first ring gear, and the first carrier, and the first ring gear is connected to the case.
5. The single-motor electric drive axle with a wheel-side reduction mechanism according to claim 4, wherein the intermediate shaft engaging teeth and the engaging teeth provided on the first carrier are provided on the same side of the differential.
6. The single-motor drive axle with a wheel-side reduction mechanism according to claim 2, wherein the second planetary row includes a second sun gear, a second planetary gear, a second ring gear, and a second carrier, the second ring gear being connected to the case, the first output half shaft being connected to the second sun gear, the second carrier being connected to the first wheel.
7. The single motor drive axle with a wheel-side reduction mechanism according to claim 6, wherein the third planetary row comprises a third sun gear, a third planet gear, a third ring gear, and a third carrier, the third ring gear is connected to the case, the second output half shaft is connected to the third sun gear, and the third carrier is connected to the second wheel.
8. The single electric motor axle with a wheel-side reduction mechanism according to claim 4, wherein the synchronizing sleeve is further shiftable to a neutral position and disengaged from the first carrier and countershaft engaging teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222711626.6U CN218702668U (en) | 2022-10-14 | 2022-10-14 | Single-motor electric drive axle with wheel-side speed reducing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222711626.6U CN218702668U (en) | 2022-10-14 | 2022-10-14 | Single-motor electric drive axle with wheel-side speed reducing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218702668U true CN218702668U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222711626.6U Active CN218702668U (en) | 2022-10-14 | 2022-10-14 | Single-motor electric drive axle with wheel-side speed reducing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218702668U (en) |
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2022
- 2022-10-14 CN CN202222711626.6U patent/CN218702668U/en active Active
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Effective date of registration: 20240325 Address after: No.8, Jiangfang Road, Changjiang Town, Rugao City, Nantong City, Jiangsu Province, 226500 Patentee after: Jiangsu Huayong composite materials Co.,Ltd. Country or region after: China Address before: 130000 No. 85 Puyang Street, Changchun Automobile Development Zone, Jilin Province (in the courtyard of Changchun automobile economic and Trade Development Zone Economic and Trade Corporation) Patentee before: Tomson (Jilin) Auto Parts Co.,Ltd. Country or region before: China |