CN215922460U - Double-rotating-wheel-core electric driving system - Google Patents
Double-rotating-wheel-core electric driving system Download PDFInfo
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- CN215922460U CN215922460U CN202121756420.4U CN202121756420U CN215922460U CN 215922460 U CN215922460 U CN 215922460U CN 202121756420 U CN202121756420 U CN 202121756420U CN 215922460 U CN215922460 U CN 215922460U
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Abstract
The utility model discloses a double-rotating-wheel-core electric driving system which comprises a bottom fork, a wheel hub, a high-speed motor, a speed reducing mechanism and a driving shaft, wherein the bottom fork comprises a first bottom fork arm and a second bottom fork arm, a motor mounting bin is arranged on the first bottom fork arm, the speed reducing mechanism mounting bin is arranged on one side of the motor mounting bin, the high-speed motor is mounted in the motor mounting bin, a motor shaft of the high-speed motor is inserted into the speed reducing mechanism mounting bin, one end of the driving shaft is rotatably mounted on the speed reducing mechanism mounting bin, and the other end of the driving shaft is rotatably mounted on the second bottom fork arm. The double-rotating wheel core electric driving system adopting the technical scheme utilizes the matching of the high-speed motor and the speed reducing mechanism, has high motor efficiency and small heat productivity, reduces the power consumption of the motor, promotes the endurance mileage, promotes the maximum speed per hour of the two-wheeled vehicle by about two thirds, and promotes the balance and the safety of the wheel core electric driving system.
Description
Technical Field
The utility model relates to the technical field of electric drive of two-wheeled vehicles, in particular to a double-rotating-wheel-core electric drive system.
Background
With the gradual improvement of the national environmental protection consciousness and the improvement of the battery and motor technology, the market proportion of the electric drive two-wheeled vehicle is greatly improved year by year.
The existing electric two-wheeled vehicle mainly adopts a driving mode of a hub motor. The hub motor is directly driven by a low-speed direct current motor, the motor is large in size, heavy in weight and large in starting current, the control and safety of the two-wheel vehicle can be influenced to a certain extent, the rotating speed and the load in the power target of the high-efficiency area of the motor deviate from the rotating speed and the load area of the hub under the working conditions of starting, heavy load, headwind and gradient running, the energy consumption is high, the efficiency is low, the heat productivity is large, tire burst is caused, the running mileage is short, the controllability is poor, and the speed of the two-wheel vehicle can only reach about 70km/h at most.
It is urgent to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides an electric drive system with double rotating wheel cores.
The technical scheme is as follows:
the utility model provides a two rotatory wheel core electric drive systems, includes chain stay, wheel hub, high-speed motor, reduction gears and drive shaft, its main points are: the chain stay includes a first chain stay and a second chain stay, the hub is mounted between the first chain stay and the second chain stay by the drive shaft, wherein the hub is proximate to the second chain stay; and the high-speed motor is arranged on the first fork arm, and a motor shaft of the high-speed motor drives the driving shaft to rotate through the speed reducing mechanism.
Preferably, the method comprises the following steps: the speed reducing mechanism is characterized in that a motor mounting bin is arranged on the first fork arm, a speed reducing mechanism mounting bin is arranged on one side, close to the second fork arm, of the motor mounting bin, the high-speed motor is mounted in the motor mounting bin, a motor shaft of the high-speed motor is inserted into the speed reducing mechanism mounting bin, one end of the driving shaft is rotatably mounted on the speed reducing mechanism mounting bin, the other end of the driving shaft is rotatably mounted on the second fork arm through a radial bearing, the speed reducing mechanism is mounted in the speed reducing mechanism mounting bin, and the motor shaft transmits power to the driving shaft through the speed reducing mechanism.
Preferably, the method comprises the following steps: the high-speed motor is installed in the installation cavity of motor installation storehouse, be formed with at least round on the bulkhead of motor installation storehouse and be the annular around the air current gyration passageway around the installation cavity, the at least round heat transfer breach of intercommunication installation cavity is seted up to the inner wall of air current gyration passageway, set up at least one air inlet with external intercommunication on the front side outer wall of air current gyration passageway, set up at least one gas outlet with external intercommunication on the rear side outer wall.
By adopting the structure and arranging the airflow rotary channel, the heat of the motor can be taken away by utilizing natural wind in the running process more efficiently, and the heat dissipation capacity is improved by 3% -5%.
Preferably, the method comprises the following steps: two circles of airflow rotary channels are formed on the wall of the motor installation bin, a plurality of annular radiating fins are arranged around the motor shell of the high-speed motor, and heat exchange gaps of the two circles of airflow rotary channels are opposite to the annular radiating fins.
By adopting the structure, the heat dissipation capacity of the motor is further improved.
Preferably, the method comprises the following steps: wheel hub's wheel hub one side is formed with the equipment fixing groove, reduction gears installation storehouse is located the equipment fixing groove, the tank bottom of equipment fixing groove has the brake disc support, install the brake disc on the brake disc support, this brake disc and the brake calliper looks adaptation of installing on wheel hub.
By adopting the structure, the brake disc and the brake caliper can be protected, and the service life of the brake disc and the brake caliper is prolonged.
Preferably, the method comprises the following steps: wheel hub's wheel hub one side is formed with the equipment fixing groove, reduction gears installation storehouse is located the equipment fixing groove, one side that wheel hub kept away from the equipment fixing groove has the brake disc support, install the brake disc on the brake disc support, this brake disc and the brake calliper looks adaptation of installing on wheel hub.
By adopting the structure, the brake disc and the brake caliper can be conveniently assembled.
Preferably, the method comprises the following steps: the speed reducing mechanism comprises an intermediate shaft, a speed reducing primary driving gear, a speed reducing primary driven gear, a speed reducing secondary driving gear and a speed reducing secondary driven gear, wherein the intermediate shaft is parallel to a motor shaft and a driving shaft, the speed reducing primary driving gear is sleeved on the motor shaft in a synchronous rotating mode, the speed reducing primary driven gear is sleeved on the intermediate shaft in a synchronous rotating mode, the speed reducing secondary driving gear is formed on the intermediate shaft, the speed reducing secondary driven gear is sleeved on the driving shaft in a synchronous rotating mode, the speed reducing primary driving gear is meshed with the speed reducing primary driven gear, and the speed reducing secondary driving gear is meshed with the speed reducing secondary driven gear.
With the above configuration, the reduction gear can be stably and reliably performed.
Preferably, the method comprises the following steps: the driving shaft and the motor shaft are coaxially arranged.
By adopting the structure, the overall balance of the electric drive system can be improved.
Preferably, the method comprises the following steps: the driving shaft penetrates out of the speed reducing mechanism mounting bin and then is sleeved with a hub mounting flange in a synchronous rotating mode, and the hub of the hub is fixedly mounted on the hub mounting flange in a synchronous rotating mode.
By adopting the structure, the hub can be driven to rotate stably and reliably.
Compared with the prior art, the utility model has the beneficial effects that:
the double-rotating wheel core electric driving system adopting the technical scheme utilizes the matching of the high-speed motor and the speed reducing mechanism, not only is the motor efficient and small in heat productivity, reduces the power consumption of the motor, improves the endurance mileage, but also improves the maximum speed per hour of the two-wheeled vehicle by about two thirds, and meanwhile, the high-speed motor, the speed reducing mechanism and the driving shaft are all installed between the first fork arm and the second fork arm of the flat fork, so that the balance and the safety of the wheel core electric driving system are improved.
Drawings
FIG. 1 is a schematic structural view of the present invention when the brake disc and the brake caliper are in the embodiment;
FIG. 2 is a schematic structural view of the present invention when the brake disc and the brake caliper are the second embodiment;
FIG. 3 is a half cross-sectional view of the bottom fork;
fig. 4 is a schematic view of the matching relationship between the motor, the speed reducing mechanism and the driving shaft.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, a dual-rotary-wheel electric drive system mainly includes a bottom fork 4, a wheel hub 1, a high-speed motor 2, a speed reduction mechanism 7, and a drive shaft 3.
The bottom fork 4 comprises a first bottom fork arm 41 and a second bottom fork arm 42, namely when the first bottom fork arm 41 is a left bottom fork arm, the second bottom fork arm 42 is a right bottom fork arm; when the first yoke 41 is a right yoke, the second yoke 42 is a left yoke.
The first fork arm 41 is provided with a motor mounting bin 43, and one side of the motor mounting bin 43 close to the second fork arm 42 is provided with a speed reducing mechanism mounting bin 44, namely, the speed reducing mechanism mounting bin 44 is fixedly mounted on the motor mounting bin 43. The high-speed motor 2 is mounted in the motor mounting bin 43, and the reduction mechanism 7 is mounted in the reduction mechanism mounting bin 44. Further, the motor shaft 21 of the high-speed motor 2 is inserted into the reduction mechanism mounting chamber 44, one end of the drive shaft 3 is rotatably mounted on the reduction mechanism mounting chamber 44, and the other end of the drive shaft 3 is rotatably mounted on the second yoke 42, specifically, one end of the drive shaft 3 is mounted on the reduction mechanism mounting chamber 44 by a plurality of bearings, and the other end of the drive shaft 3 is also mounted on the second yoke 42 by a plurality of bearings. The hub 1 is mounted for synchronous rotation on the drive shaft 3 between the first yoke arm 41 and the second yoke arm 42. Therefore, the motor shaft 21 transmits power to the drive shaft 3 through the speed reduction mechanism 7, so that the drive shaft 3 drives the hub 1 to rotate synchronously.
Further, the driving shaft 3 penetrates through the speed reducing mechanism mounting bin 44 and then is sleeved with the hub mounting flange 8 in a synchronous rotating mode, the hub 11 of the hub 1 is fixedly mounted on the hub mounting flange 8 in a synchronous rotating mode, and the hub 1 can be driven to rotate stably and reliably.
The high-speed motor 2 is mounted in the mounting chamber 431 of the motor mounting bin 43, and the mounting chamber 431 may be of a groove-shaped structure or a closed structure.
Referring to fig. 1-3, at least one circle of airflow rotary channel 432 annularly surrounding the installation cavity 431 is formed on the wall of the motor installation bin 43, the inner wall of the airflow rotary channel 432 is provided with at least one circle of heat exchange gap 433 communicated with the installation cavity 431, the front side outer wall of the airflow rotary channel 432 is provided with at least one air inlet 434 communicated with the outside, and the rear side outer wall is provided with at least one air outlet 435 communicated with the outside. Therefore, in the two-wheel vehicle form process, natural wind enters the airflow rotary channel 432 from the air inlet 434, divides into two paths of the semicircle and the lower semicircle to pass through, takes away heat generated by the high-speed motor 2 through the heat exchange gap 433 in the process, and finally blows out from the air outlet 435. By arranging the airflow rotary channel 432, the heat of the motor can be taken away by utilizing natural wind in the driving process more efficiently, and the heat dissipation capacity is improved by 3% -5%.
Further, in order to further improve the heat dissipation of the high-speed motor 2, two circles of airflow rotary channels 432 are formed on the wall of the motor installation bin 43, a plurality of annular heat dissipation fins 23 are arranged around the motor housing 22 of the high-speed motor 2, the annular heat dissipation fins 23 are annularly arranged on the outer peripheral surface of the motor housing 22 side by side, and the heat exchange gaps 433 of the two circles of airflow rotary channels 432 are respectively opposite to part of the annular heat dissipation fins 23.
First embodiment of the mounting structure of the brake disc 5 and the brake caliper 6:
referring to fig. 1, an equipment mounting groove 111 is formed on one side of a hub 11 of a hub 1, a speed reduction mechanism mounting bin 44 is located in the equipment mounting groove 111, a brake disc support 112 is arranged at the bottom of the equipment mounting groove 111, a brake disc 5 is mounted on the brake disc support 112, and the brake disc 5 is matched with a brake caliper 6 mounted on the hub 11. The brake disc 5 and the brake caliper 6 are arranged in the equipment mounting groove 111, the brake disc 5 and the brake caliper 6 can be protected, and the service life of the brake disc 5 and the service life of the brake caliper 6 are prolonged.
Second embodiment of the mounting structure of the brake disc 5 and the brake caliper 6:
referring to fig. 2, an equipment mounting groove 111 is formed on one side of the hub 11 of the hub 1, the speed reducing mechanism mounting bin 44 is located in the equipment mounting groove 111, a brake disc bracket 112 is arranged on one side of the hub 11 away from the equipment mounting groove 111, a brake disc 5 is mounted on the brake disc bracket 112, and the brake disc 5 is adapted to a brake caliper 6 mounted on the hub 11. The brake disc 5 and the brake calipers 6 adopt an external installation mode, and the convenience of assembly is improved.
Referring to fig. 4, the speed reducing mechanism 7 includes an intermediate shaft 71 parallel to both the motor shaft 21 and the driving shaft 3, a speed reducing primary driving gear 72 synchronously rotatably fitted on the motor shaft 21, a speed reducing primary driven gear 73 synchronously rotatably fitted on the intermediate shaft 71, a speed reducing secondary driving gear 74 formed on the intermediate shaft 71, and a speed reducing secondary driven gear 75 synchronously rotatably fitted on the driving shaft 3, the speed reducing primary driving gear 72 is engaged with the speed reducing primary driven gear 73, and the speed reducing secondary driving gear 74 is engaged with the speed reducing secondary driven gear 75.
The motor shaft 21 of the high-speed motor 2 drives the first-stage speed reduction driving gear 72 to synchronously rotate, the first-stage speed reduction driving gear 72 drives the first-stage speed reduction driven gear 73 to rotate, the first-stage speed reduction driven gear 73 drives the intermediate shaft 71 to synchronously rotate, the second-stage speed reduction driving gear 74 of the intermediate shaft 71 drives the second-stage speed reduction driven gear 75 to rotate, the second-stage speed reduction driven gear 75 drives the driving shaft 3 to synchronously rotate, and the driving shaft 3 drives the hub to rotate through the hub mounting flange 8.
Further, the drive shaft 3 is provided coaxially with the motor shaft 21, and the balance of the entire electric drive system can be improved. An oil seal is provided at a position where the motor shaft 21 is inserted into the reduction mechanism mounting chamber 44, and an oil seal is also provided at a position where the drive shaft 3 passes through the reduction mechanism mounting chamber 44.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a two rotatory wheel core electric drive systems, includes chain stay (4), wheel hub (1), high-speed motor (2), reduction gears (7) and drive shaft (3), its characterized in that: the chain stay (4) comprises a first chain stay (41) and a second chain stay (42), the hub (1) is mounted between the first chain stay (41) and the second chain stay (42) by the drive shaft (3), wherein the hub (1) is adjacent to the second chain stay (42); the high-speed motor (2) is mounted on the first fork arm (41), and a motor shaft (21) of the high-speed motor (2) drives the driving shaft (3) to rotate through the speed reducing mechanism (7).
2. A dual rotary wheel electric drive system as defined in claim 1, wherein: the motor installation bin (43) is arranged on the first fork arm (41), a speed reducing mechanism installation bin (44) is arranged on one side, close to the second fork arm (42), of the motor installation bin (43), the high-speed motor (2) is installed in the motor installation bin (43), a motor shaft (21) of the high-speed motor (2) is inserted into the speed reducing mechanism installation bin (44), one end of the driving shaft (3) is rotatably installed on the speed reducing mechanism installation bin (44), the other end of the driving shaft is rotatably installed on the second fork arm (42) through a radial bearing, the speed reducing mechanism (7) is installed in the speed reducing mechanism installation bin (44), and the motor shaft (21) transmits power to the driving shaft (3) through the speed reducing mechanism (7).
3. A dual rotary wheel electric drive system as defined in claim 2, wherein: the high-speed motor (2) is installed in an installation cavity (431) of a motor installation bin (43), at least one circle of airflow rotary channel (432) which is annularly surrounded around the installation cavity (431) is formed on the wall of the motor installation bin (43), at least one circle of heat exchange notch (433) communicated with the installation cavity (431) is formed in the inner wall of the airflow rotary channel (432), at least one air inlet (434) communicated with the outside is formed in the outer wall of the front side of the airflow rotary channel (432), and at least one air outlet (435) communicated with the outside is formed in the outer wall of the rear side.
4. A dual rotary wheel electric drive system as defined in claim 3, wherein: two circles of airflow rotary channels (432) are formed on the wall of the motor installation bin (43), a plurality of annular radiating fins (23) are arranged around the motor shell (22) of the high-speed motor (2), and heat exchange gaps (433) of the two circles of airflow rotary channels (432) are opposite to the annular radiating fins (23).
5. A dual rotary wheel electric drive system as defined in claim 2, wherein: wheel hub (11) one side of wheel hub (1) is formed with equipment mounting groove (111), reduction gears installation storehouse (44) are arranged in equipment mounting groove (111), the tank bottom of equipment mounting groove (111) has brake disc support (112), install brake disc (5) on the brake disc support (112), this brake disc (5) and brake caliper (6) looks adaptation of installing on wheel hub (11).
6. A dual rotary wheel electric drive system as defined in claim 2, wherein: wheel hub (11) one side of wheel hub (1) is formed with equipment mounting groove (111), reduction gears installation storehouse (44) are arranged in equipment mounting groove (111), one side that equipment mounting groove (111) were kept away from in wheel hub (11) has brake disc support (112), install brake disc (5) on brake disc support (112), this brake disc (5) and brake caliper (6) looks adaptation of installing on wheel hub (11).
7. A dual rotary wheel electric drive system as defined in claim 2, wherein: the speed reducing mechanism (7) comprises an intermediate shaft (71) parallel to the motor shaft (21) and the driving shaft (3), a speed reducing primary driving gear (72) sleeved on the motor shaft (21) in a synchronous rotating mode, a speed reducing primary driven gear (73) sleeved on the intermediate shaft (71) in a synchronous rotating mode, a speed reducing secondary driving gear (74) formed on the intermediate shaft (71) and a speed reducing secondary driven gear (75) sleeved on the driving shaft (3) in a synchronous rotating mode, the speed reducing primary driving gear (72) is meshed with the speed reducing primary driven gear (73), and the speed reducing secondary driving gear (74) is meshed with the speed reducing secondary driven gear (75).
8. A dual rotary wheel electric drive system as defined in claim 7, wherein: the driving shaft (3) and the motor shaft (21) are coaxially arranged.
9. A dual rotary wheel electric drive system as defined in claim 2, wherein: the driving shaft (3) penetrates out of the speed reducing mechanism mounting bin (44) and then is sleeved with a hub mounting flange (8) in a synchronous rotating mode, and a hub (11) of the hub (1) is fixedly mounted on the hub mounting flange (8) in a synchronous rotating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121756420.4U CN215922460U (en) | 2021-07-29 | 2021-07-29 | Double-rotating-wheel-core electric driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121756420.4U CN215922460U (en) | 2021-07-29 | 2021-07-29 | Double-rotating-wheel-core electric driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215922460U true CN215922460U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121756420.4U Active CN215922460U (en) | 2021-07-29 | 2021-07-29 | Double-rotating-wheel-core electric driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215922460U (en) |
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2021
- 2021-07-29 CN CN202121756420.4U patent/CN215922460U/en active Active
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