CN210196369U - Logistics vehicle electric drive axle transmission - Google Patents
Logistics vehicle electric drive axle transmission Download PDFInfo
- Publication number
- CN210196369U CN210196369U CN201822159676.1U CN201822159676U CN210196369U CN 210196369 U CN210196369 U CN 210196369U CN 201822159676 U CN201822159676 U CN 201822159676U CN 210196369 U CN210196369 U CN 210196369U
- Authority
- CN
- China
- Prior art keywords
- gear
- input shaft
- jackshaft
- intermediate shaft
- differential mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model provides a commodity circulation car electricity drive axle derailleur, its integration has differential mechanism, realizes speed change, differential, speed reduction integration for compact structure, whole car occupation space is little, has increased the battery and has arranged the space, has cancelled transmission shaft device simultaneously, passes merit efficiently, greatly increased the continuation of the journey mileage of new forms of energy commodity circulation car. It includes gearbox body, preceding shell, form the equipment cavity behind preceding shell, the concatenation of gearbox body, the lower part intermediate position of gearbox body is provided with the transmission and dodges the hole, input shaft, jackshaft have been arranged in the equipment cavity, the jackshaft is located the lower part of input shaft is arranged, the front end evagination of input shaft in behind the preceding shell, connect driving motor, being located of input shaft the part of equipment cavity has been arranged input shaft one and has been kept off gear, input shaft two and keep off the gear, the cover is equipped with jackshaft one and keeps off gear, jackshaft normal mesh gear on the jackshaft respectively.
Description
Technical Field
The utility model relates to a technical field of transmission derailleur specifically is a commodity circulation car electricity drive axle derailleur.
Background
In the face of global energy crisis and environmental problems, the automobile industry is undoubtedly a big household of energy consumption and air pollution, under the international environment of energy conservation and emission reduction and under the strong support of governments on new energy services, the demand of pure electric automobiles rises year by year, a power assembly (electric drive bridge) of a motor, a gearbox and a rear axle gradually becomes the direction of cooperative development of automobile enterprises, and a transmission is an intermediate link of the power assembly and plays a particularly key role in a transmission system.
The existing electrically-driven bridge transmission has the disadvantages of complex structure, difficult arrangement, long transmission line and low transmission efficiency.
Disclosure of Invention
To the above problem, the utility model provides a commodity circulation car electricity drive axle derailleur, its integration has differential mechanism, realizes variable speed, differential, speed reduction integration for compact structure, whole car occupation space is little, has increased the battery and has arranged the space, has cancelled transmission shaft device simultaneously, passes merit efficiently, greatly increased the continuation of the journey mileage of new forms of energy commodity circulation car.
The utility model provides a commodity circulation car electric drive axle derailleur which characterized in that: the transmission cavity is formed after the front shell and the transmission box body are spliced, a transmission avoiding hole is formed in the middle position of the lower portion of the transmission box body, an input shaft and an intermediate shaft are arranged in the assembly cavity, the intermediate shaft is located on the lower portion of the input shaft and arranged, the front end of the input shaft protrudes out of the rear portion of the front shell and is connected with a driving motor, a first input shaft gear and a second input shaft gear are arranged on the portion, located in the assembly cavity, of the input shaft, the first intermediate shaft gear, the second intermediate shaft gear and an intermediate shaft normally-meshed gear are respectively sleeved on the intermediate shaft through needle bearings, the intermediate shaft normally-meshed gear is fixedly sleeved on the intermediate shaft, and the first intermediate shaft gear is meshed with the first input shaft gear, the utility model discloses a transmission gear box, including jackshaft two, jackshaft two keep off gear, jackshaft two keep off the jackshaft cover between the gear and be equipped with the synchronous ware, the slip tooth cover of synchronous ware keeps off the gear, the jackshaft two keep off axial motion between the gear along jackshaft one, the jackshaft two keep off the gear, and the both ends face of slip tooth cover is arranged towards the respective meshing ring gear that jackshaft one kept off the gear, jackshaft two keep off the gear respectively, differential mechanism has been arranged to the lower part of gearbox casing, two output shafts of differential mechanism are on a parallel with the jackshaft is arranged, the main upper portion tooth meshing that reduces the gear of differential mechanism connects the lower part tooth of jackshaft constant mesh gear, the main meshing.
It is further characterized in that:
two output shafts of the differential are arranged right below the input shaft, the intermediate shaft is arranged on one side of a surface area formed by the central lines of the input shaft and the output shaft, and the intermediate shaft, the input shaft and the output shaft are arranged in a triangular structure, so that the overall height is relatively small, and the overall convenient arrangement is ensured;
the input shaft first gear is integrated with the input shaft, so that the transmission is stable and reliable;
the intermediate shaft normally meshed gear is integrated with the intermediate shaft, so that the transmission is stable and reliable;
the two sides of the transmission avoiding hole of the gearbox body corresponding to the differential installation side plates are respectively provided with a differential installation side plate, a first output shaft sleeve of the differential is provided with a first tapered roller bearing, a first differential bearing cover is fixedly arranged on the differential installation side plate on the corresponding side of the gearbox body, the first differential bearing cover and the corresponding differential installation side plate are combined to form a first positioning installation hole, the first tapered roller bearing is supported in the first positioning installation hole in a positioning manner, a second output shaft sleeve of the differential is provided with a second tapered roller bearing, the second differential bearing cover is fixedly arranged on the differential installation side plate on the corresponding side of the gearbox body, the second differential bearing cover and the corresponding differential installation side plate are combined to form a second positioning installation hole, and the second tapered roller bearing is supported in the second positioning installation hole in a positioning manner, so that the whole transmission is convenient to assemble, The method is fast, and the half shaft and the output shaft of the automobile are convenient to arrange and install; the supporting bearing of the differential adopts a cone bearing design, the bearing capacity of the bearing is greatly improved under the same diameter, the clearance of the cone bearing is accurately adjusted to about 0.05mm at normal temperature, and the design life of the bearing is ensured;
adjusting nuts are annularly distributed in the area, corresponding to the front end face of the first tapered roller bearing, of the front end face of the first differential bearing cover, the inner ends of the adjusting nuts are tightly attached to the front end face of the outer ring of the first tapered roller bearing, so that the adjusting nuts axially fix the first tapered roller bearing, and the mounting of the whole differential is stable and reliable;
a first deep groove ball bearing, a first snap ring and an oil seal are sequentially sleeved at the front end of the input shaft corresponding to the mounting position of the front shell, a second deep groove ball bearing is sleeved at the rear end of the input shaft and then is positioned and mounted in a deep groove ball bearing hole of the gearbox body, and the second deep groove ball bearing is axially fixed by the second snap ring;
the front end of the intermediate shaft is sleeved with a cylindrical roller bearing and then is supported and positioned in an intermediate shaft mounting ring groove of the front shell, and the rear end of the intermediate shaft is positioned and mounted in an intermediate shaft positioning mounting hole of the gearbox body through a third deep groove ball bearing;
all gears adopt thin and high teeth, so that the contact ratio of gear pairs is increased and averaged, the strength of the gears is improved, and the meshing noise is reduced;
the synchronizer is externally connected with a shifting fork assembly, and the shifting fork assembly is externally connected with a shifting motor.
After the utility model is adopted, the first gear and the second gear are shifted through the driving synchronizer, the differential mechanism is integrated at the lower part of the gearbox body, the integrated differential mechanism and the axle are direct, the arrangement is simple, the power transmission line is short, and the transmission efficiency is high; the gears are designed to be thin and high, the contact ratio of the gear pair is increased and averaged, macroscopic and microscopic parameters of the gears are optimized, the strength of the gears is greatly improved, and the meshing noise is reduced; the differential supporting bearing adopts a conical bearing design, the bearing capacity of the bearing is greatly improved under the same diameter, the clearance of the conical bearing is accurately adjusted to about 0.05mm at normal temperature, and the design life of the bearing is ensured; the shell cover piece is designed in an all-aluminum alloy finite element topology optimization mode, and fatigue checking is carried out through a load spectrum of 50 kilometres; the weight of a transmission assembly is greatly reduced, and the torque mass ratio is increased to reach 4.9; the cleanliness of the assembly is limited to 290mg, the backup coefficient of the static torsional strength of the assembly is not less than 3.0, and the average transmission efficiency of the assembly is not less than 96.5%; the integrated speed changing, differential and speed reducing device has the advantages that the integrated speed changing, differential and speed reducing device is compact in structure, the occupied space of the whole vehicle is small, the battery arrangement space is increased, the transmission shaft device is eliminated, the power transmission efficiency is high, and the endurance mileage of the new energy logistics vehicle is greatly increased.
Drawings
Fig. 1 is a schematic front view structure diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional structural schematic view of the front view of FIG. 1;
FIG. 3 is a left side view (partially in section) of the schematic of FIG. 1;
the names corresponding to the sequence numbers in the figure are as follows:
the transmission comprises a transmission case body 1, a front shell 2, an assembly cavity 3, a transmission avoidance hole 4, an input shaft 5, an intermediate shaft 6, an input shaft first-gear 7, an input shaft second-gear 8, an intermediate shaft first-gear 9, an intermediate shaft second-gear 10, an intermediate shaft constant-meshing gear 11, a synchronizer 12, a sliding gear sleeve 121, a meshing gear ring 13, a differential 14, a main reduction gear 15, a differential installation side plate 16, a first output shaft 17, a first conical roller bearing 18, a first differential bearing cover 19, a second output shaft 20, a second conical roller bearing 21, a second differential bearing cover 22, a second positioning installation hole 23, an adjusting nut 24, a first deep groove ball bearing 25, a first snap ring 26, an oil seal 27 and a second deep groove ball bearing 28; the gear shifting mechanism comprises a cylindrical roller bearing 29, a third deep groove ball bearing 30, a shifting fork assembly 31, a gear shifting motor 32, a needle bearing 33 and a first positioning installation hole 34.
Detailed Description
A logistics vehicle electric drive axle transmission is shown in figures 1-3: the gear box comprises a gear box body 1 and a front shell 2, wherein the front shell 2 and the gear box body 1 are spliced to form an assembly cavity 3, a transmission avoidance hole 4 is formed in the middle position of the lower portion of the gear box body 1, an input shaft 5 and an intermediate shaft 6 are arranged in the assembly cavity 3, the intermediate shaft 6 is arranged on the lower portion of the input shaft 5, the front end of the input shaft 5 protrudes out of the front shell 2 and is connected with a driving motor, an input shaft first retaining gear 7 and an input shaft second retaining gear 8 are arranged on the portion, located in the assembly cavity 3, of the input shaft 5, the intermediate shaft first retaining gear 9, the intermediate shaft second retaining gear 10 and an intermediate shaft normally meshed gear 11 are respectively sleeved on the intermediate shaft 6 through needle bearings 33, the intermediate shaft normally meshed gear 11 is fixedly sleeved on the intermediate shaft 6, the intermediate shaft first retaining gear 9 is meshed with the input shaft first retaining gear 7, an intermediate shaft two-gear 10 is meshed with an input shaft two-gear 8, an intermediate shaft one-gear 9 is arranged between the intermediate shaft two-gear gears 10, a synchronizer 12 is sleeved on an intermediate shaft between the intermediate shaft two-gear gears 10, a sliding gear sleeve 121 of the synchronizer 12 moves along the intermediate shaft one-gear 9 and axially between the intermediate shaft two-gear gears 10, two end faces of the sliding gear sleeve 121 face the intermediate shaft one-gear 9 respectively, respective meshing gear rings 13 of the intermediate shaft two-gear gears 10 are arranged, a differential 14 is arranged on the lower portion of a gearbox body 1, two output shafts of the differential 14 are arranged in parallel to an intermediate shaft 6, upper portion teeth of a main reducing gear 15 of the differential 14 are meshed with lower portion teeth of an intermediate shaft normally-meshed gear 11, and meshing portions of the main reducing.
Two output shafts of the differential 14 are arranged right below the input shaft 5, the intermediate shaft 6 is arranged on one side of a surface area formed by the central lines of the input shaft 5 and the output shafts, and the intermediate shaft 6, the input shaft 5 and the output shafts are arranged in a triangular structure, so that the overall height is relatively small, and the overall convenient arrangement is ensured;
the input shaft first gear 7 is integrated with the input shaft 5, so that the transmission is stable and reliable;
the intermediate shaft constant mesh gear 11 is integrated on the intermediate shaft 6, so that the transmission is stable and reliable;
differential installation side plates 16 are respectively arranged on two sides of the transmission avoiding hole 4 of the gearbox body 1, a first conical roller bearing 18 is sleeved on a first output shaft 17 of the differential 14, a first differential bearing cover 19 is fixedly arranged on the differential installation side plate 16 on the corresponding side of the gearbox body 1, the first differential bearing cover 19 and the corresponding differential installation side plate 16 are combined to form a first positioning installation hole 34, the first conical roller bearing 18 is positioned and supported on the first positioning installation hole 34, a second conical roller bearing 21 is sleeved on a second output shaft 20 of the differential 14, a second differential bearing cover 22 is fixedly arranged on the differential installation side plate 16 on the corresponding side of the gearbox body 1, a second positioning installation hole 23 is formed by the second differential bearing cover 22 and the corresponding differential installation side plate 16, and the second conical roller bearing 21 is positioned and supported on the second positioning installation hole 23, so that the whole gearbox is convenient to assemble, The method is fast, and the half shaft and the output shaft of the automobile are convenient to arrange and install; the supporting bearing of the differential adopts a cone bearing design, the bearing capacity of the bearing is greatly improved under the same diameter, the clearance of the cone bearing is accurately adjusted to about 0.05mm at normal temperature, and the design life of the bearing is ensured;
the front end face of the first differential bearing cover 19 is annularly provided with adjusting nuts 24 in the area corresponding to the front end face of the first tapered roller bearing 18, the inner ends of the adjusting nuts 24 are tightly attached to the front end face of the outer ring of the first tapered roller bearing 18, so that the adjusting nuts 24 axially fix the first tapered roller bearing 18, and the whole differential 14 is ensured to be stably and reliably mounted;
the front end of the input shaft 5 is sleeved with a first deep groove ball bearing 25, a first snap ring 26 and an oil seal 27 in sequence corresponding to the mounting position of the front shell 2, the rear end of the input shaft 5 is sleeved with a second deep groove ball bearing 28 and then is positioned and mounted in a deep groove ball bearing hole of the gearbox body 1, and the second snap ring 2 is axially fixed with the second deep groove ball bearing 28;
the front end of the intermediate shaft 6 is sleeved with a cylindrical roller bearing 29 and then is supported and positioned in an intermediate shaft mounting ring groove of the front shell 2, and the rear end of the intermediate shaft 6 is positioned and mounted in an intermediate shaft positioning mounting hole of the gearbox body 1 through a third deep groove ball bearing 30;
all gears adopt thin and high teeth, so that the contact ratio of gear pairs is increased and averaged, the strength of the gears is improved, and the meshing noise is reduced;
the synchronizer 12 is externally connected with a shifting fork assembly 31, and the shifting fork assembly 31 is externally connected with a shifting motor 32.
The working principle is as follows: the synchronizer is driven to shift gears at the first gear and the second gear, the differential is integrated at the lower part of the gearbox body, and the integrated differential is direct to the axle, so that the arrangement is simple, the power transmission line is short, and the transmission efficiency is high; the gears are designed to be thin and high, the contact ratio of the gear pair is increased and averaged, macroscopic and microscopic parameters of the gears are optimized, the strength of the gears is greatly improved, and the meshing noise is reduced; the differential supporting bearing adopts a conical bearing design, the bearing capacity of the bearing is greatly improved under the same diameter, the clearance of the conical bearing is accurately adjusted to about 0.05mm at normal temperature, and the design life of the bearing is ensured; the shell cover piece is designed in an all-aluminum alloy finite element topology optimization mode, and fatigue checking is carried out through a load spectrum of 50 kilometres; the weight of a transmission assembly is greatly reduced, and the torque mass ratio is increased to reach 4.9; the cleanliness of the assembly is limited to 290mg, the backup coefficient of the static torsional strength of the assembly is not less than 3.0, and the average transmission efficiency of the assembly is not less than 96.5%; the integrated speed changing, differential and speed reducing device has the advantages that the integrated speed changing, differential and speed reducing device is compact in structure, the occupied space of the whole vehicle is small, the battery arrangement space is increased, the transmission shaft device is eliminated, the power transmission efficiency is high, and the endurance mileage of the new energy logistics vehicle is greatly increased.
The detailed description of the embodiments of the present invention has been provided, but the present invention is only the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the present invention shall fall within the scope of the present patent application.
Claims (10)
1. The utility model provides a commodity circulation car electric drive axle derailleur which characterized in that: the assembly cavity is formed after the front shell and the gearbox body are spliced, a transmission avoiding hole is formed in the middle position of the lower portion of the gearbox body, an input shaft and an intermediate shaft are arranged in the assembly cavity, the intermediate shaft is located on the lower portion of the input shaft and arranged, the front end of the input shaft protrudes out of the rear portion of the front shell and is connected with a driving motor, a first input shaft gear and a second input shaft gear are arranged on the portion, located in the assembly cavity, of the input shaft, the first intermediate shaft gear and the second intermediate shaft gear are sleeved on the intermediate shaft through needle bearings respectively, a normally-meshed gear of the intermediate shaft is fixedly sleeved on the intermediate shaft, the first intermediate shaft gear is meshed with the first input shaft gear, the second intermediate shaft gear is meshed with the second input shaft gear, the first intermediate shaft gear is meshed with the second input shaft gear, and the first intermediate shaft, The jackshaft cover that the jackshaft kept off between the gear is equipped with the synchronous ware, the slip tooth cover of synchronous ware keeps off gear, jackshaft two axial motion between the gear along jackshaft one, the jackshaft keeps off the gear, and the both ends face of slip tooth cover is arranged towards the respective meshing ring gear that jackshaft one kept off gear, jackshaft two keep off the gear respectively, differential mechanism has been arranged to the lower part of gearbox casing, two output shafts of differential mechanism are on a parallel with the jackshaft is arranged, differential mechanism's main upper portion tooth meshing that reduces the gear is connected the lower part tooth of jackshaft constant mesh gear, main meshing part that reduces gear and jackshaft constant mesh gear is located the transmission is dodged the corresponding region in hole.
2. The logistics vehicular electric drive axle transmission of claim 1, wherein: two output shafts of the differential are arranged under the input shaft, the intermediate shaft is arranged on one side of a surface area formed by the central lines of the input shaft and the output shaft, and the intermediate shaft, the input shaft and the output shaft are arranged in a triangular structure.
3. The logistics vehicular electric drive axle transmission of claim 1, wherein: the input shaft first gear is integrated with the input shaft.
4. The logistics vehicular electric drive axle transmission of claim 1, wherein: the intermediate shaft constant mesh gear is integrated with the intermediate shaft.
5. The logistics vehicular electric drive axle transmission of claim 1, wherein: the gearbox body corresponding to the both sides in hole are kept away in the transmission are provided with differential mechanism installation curb plate respectively, differential mechanism's first output shaft cover is equipped with first tapered roller bearing, and first differential mechanism bearing cap adorns admittedly in the differential mechanism installation curb plate of the corresponding side of gearbox body, first differential mechanism bearing cap, the combination of the differential mechanism installation curb plate that corresponds form first location mounting hole, first tapered roller bearing location support in first location mounting hole, differential mechanism's second output shaft cover is equipped with second tapered roller bearing, and second differential mechanism bearing cap adorns admittedly in the differential mechanism installation curb plate of the corresponding side of gearbox body, second differential mechanism bearing cap, the combination of the differential mechanism installation curb plate that corresponds form second location mounting hole, second tapered roller bearing location support in second location mounting hole.
6. The logistics vehicular electric drive axle transmission of claim 5, wherein: adjusting nuts are annularly distributed in the area, corresponding to the front end face of the first tapered roller bearing, of the front end face of the first differential bearing cover, and the inner ends of the adjusting nuts are tightly attached to the front end face of the outer ring of the first tapered roller bearing.
7. The logistics vehicular electric drive axle transmission of claim 1, wherein: the front end of the input shaft corresponds to the mounting position of the front shell, and is sequentially sleeved with a first deep groove ball bearing, a first snap ring and an oil seal, the rear end of the input shaft is sleeved with a second deep groove ball bearing and then is positioned and mounted in a deep groove ball bearing hole of the gearbox body, and the second snap ring axially fixes the second deep groove ball bearing.
8. The logistics vehicular electric drive axle transmission of claim 1, wherein: the front end cover of jackshaft is equipped with the cylindrical roller bearing back and supports and is positioned in the jackshaft mounting ring inslot of preceding shell, the rear end of jackshaft pass through third deep groove ball bearing location install in the jackshaft location mounting hole of gearbox housing.
9. The logistics vehicular electric drive axle transmission of claim 1, wherein: all the gears adopt thin and tall teeth.
10. The logistics vehicular electric drive axle transmission of claim 1, wherein: the synchronizer is externally connected with a shifting fork assembly, and the shifting fork assembly is externally connected with a shifting motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159676.1U CN210196369U (en) | 2018-12-21 | 2018-12-21 | Logistics vehicle electric drive axle transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159676.1U CN210196369U (en) | 2018-12-21 | 2018-12-21 | Logistics vehicle electric drive axle transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210196369U true CN210196369U (en) | 2020-03-27 |
Family
ID=69879239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822159676.1U Active CN210196369U (en) | 2018-12-21 | 2018-12-21 | Logistics vehicle electric drive axle transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210196369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372958A (en) * | 2018-12-21 | 2019-02-22 | 苏州绿控传动科技股份有限公司 | A kind of logistic car electricity drive bridge speed changer |
-
2018
- 2018-12-21 CN CN201822159676.1U patent/CN210196369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372958A (en) * | 2018-12-21 | 2019-02-22 | 苏州绿控传动科技股份有限公司 | A kind of logistic car electricity drive bridge speed changer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210978405U (en) | Two-gear speed reducer of new energy automobile | |
| CN210196369U (en) | Logistics vehicle electric drive axle transmission | |
| CN202074011U (en) | Sliding bearing device of wind power speed increasing gearbox | |
| CN111791694A (en) | Coaxial two-gear driving system | |
| CN210218621U (en) | Electric drive axle single reduction transmission | |
| CN202170982U (en) | Integral main reducer assembly of middle bridge of heavy duty automobile | |
| CN110686054A (en) | Two speed reducer of new energy automobile | |
| CN110848346A (en) | Double-motor transverse shiftable electric drive bridge reducer assembly | |
| CN214492502U (en) | Integrated two keep off electric drive axle | |
| CN214274373U (en) | Commercial transmission of new forms of energy electricelectric motor | |
| CN212332293U (en) | Integrated form second grade speed reduction electric drive axle | |
| CN215980767U (en) | Miniaturized lightweight second grade planetary reducer | |
| CN202206246U (en) | Wheel hub motor for electric vehicle | |
| CN109334349B (en) | Transmission for new energy vehicle electric drive axle | |
| CN214197184U (en) | Dry-type double-clutch two-gear automatic transmission of pure electric vehicle | |
| CN213017552U (en) | High-integration electric drive assembly transmission system | |
| CN211624169U (en) | Pin shaft of planetary mechanism of gearbox | |
| CN209818663U (en) | New forms of energy pure electric vehicles derailleur | |
| CN209818648U (en) | Single-stage speed reducer of pure electric vehicle | |
| CN203272663U (en) | Low-noise two-gear CVT speed reducer | |
| CN109372977A (en) | Electricity drives bridge list speed variable device | |
| CN110836254A (en) | Single-motor transverse shiftable electric drive bridge reducer assembly | |
| CN111703294A (en) | Double-support electric driving wheel | |
| CN221049395U (en) | Electric drive bridge power transmission system | |
| CN2900344Y (en) | Front reverse gear straight driving secondary speed changer for tricycle motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |