CN219257615U - Electric motorcycle driving structure with toothed chain - Google Patents
Electric motorcycle driving structure with toothed chain Download PDFInfo
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- CN219257615U CN219257615U CN202320233079.7U CN202320233079U CN219257615U CN 219257615 U CN219257615 U CN 219257615U CN 202320233079 U CN202320233079 U CN 202320233079U CN 219257615 U CN219257615 U CN 219257615U
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model relates to the field of new energy high-speed electric motorcycles, in particular to an electric motorcycle transmission structure with a toothed chain; comprises a motor, a secondary reduction gearbox and a chain transmission gearbox. The motor shaft is in spline connection with the input shaft assembly in the secondary reduction gearbox, torque of the motor is transmitted to the input shaft assembly of the secondary reduction gearbox, the input shaft assembly is meshed with the intermediate shaft assembly and the intermediate shaft assembly is meshed with the output shaft assembly, the torque can be transmitted to the output shaft assembly, and then the driving sprocket fixed on the output shaft assembly is used for further driving the toothed chain to rotate to drive the rear wheel shaft driven sprocket to rotate, so that the rear wheel shaft driven sprocket transmits power to the rear wheel of the motorcycle to drive the rear wheel of the motorcycle to rotate; the chain adopts a toothed chain, plays a role in reducing noise, and can better replace the transmission of a complex electric motorcycle variable speed belt by combining a two-stage reduction gearbox.
Description
Technical Field
The utility model relates to the field of new energy high-speed electric motorcycles, in particular to an electric motorcycle transmission structure with a toothed chain.
Background
The sales of the fuel oil motorcycles in China in the first quarter of 2022 accounts for 83.2 percent, and the sales of the electric motorcycles accounts for 16.8 percent. With the upgrading of market demands and the increasingly strict environmental protection supervision, the market of electric motorcycles develops rapidly and gradually replaces the fuel motor to occupy most of the market share of domestic two-wheeled and three-wheeled vehicles. Under the background of new national standard implementation, the traditional motorcycle enterprises lay out electric new tracks in a dispute way, so that the electric friction process is accelerated, and the electric development trend of motorcycles is improved.
The existing electric motorcycle mainly adopts a motor as a power source, and is transmitted to power wheels through a transmission device, so that the vehicle is driven to advance. According to the characteristic curve of the motor, a transmission device of a reduction gearbox gear set with a reasonable speed ratio is required to be matched so as to meet the requirements of climbing dynamics and highest speed per hour of the electric motor car. The existing transmission device is generally in belt transmission or chain transmission, if a roller chain for transmission is adopted between a reduction gearbox and wheels, larger noise can be generated, and if the belt transmission is adopted between the reduction gearbox and the wheels, in order to ensure the reliability of the belt, a high-quality belt with high price is often required, and larger cost is increased.
For this purpose, an electric motorcycle transmission structure with a toothed chain is proposed.
Disclosure of Invention
In view of the above, it is necessary to provide a toothed chain-equipped electric motorcycle power train structure that is inexpensive, efficient in transmission, compact and simple in structure, and excellent in noise reduction effect.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides an electric motor car transmission structure of taking profile of tooth chain, includes motor, second grade reducing gear box and chain drive case, the motor includes a motor shaft, the motor shaft passes through spline connection with the input shaft subassembly in the second grade reducing gear box for with the moment of torsion transmission of motor to the input shaft subassembly of second grade reducing gear box still be equipped with in the second grade reducing gear box with input shaft subassembly engaged with jackshaft subassembly and with jackshaft subassembly engaged with output shaft subassembly, be equipped with in the chain drive case with output shaft subassembly fixed connection's drive sprocket, with the back shaft driven sprocket and the transmission of motorcycle rear wheel transmission connection on drive sprocket and the back shaft subassembly tooth profile of tooth chain.
Preferably, the input shaft assembly comprises a first deep groove ball bearing, a second deep groove ball bearing, an input shaft and an input shaft gear, wherein an inner spline is arranged at the upper end of the input shaft, an outer spline matched with the inner spline is arranged at one end, far away from the motor, of the motor shaft, the upper end and the lower end of the input shaft are respectively connected with the inner wall of the secondary reduction gearbox in a rotating mode through the first deep groove ball bearing and the second deep groove ball bearing, and the input shaft gear is fixedly connected to the input shaft.
Preferably, the intermediate shaft assembly comprises an intermediate shaft rotationally connected with the inner wall of the secondary reduction gearbox, a driving gear fixedly connected on the intermediate shaft and meshed with the input shaft gear, and a driven gear fixedly connected on the intermediate shaft and meshed with the output shaft assembly, and the upper end and the lower end of the intermediate shaft are rotationally connected with the inner wall of the secondary reduction gearbox through a third deep groove ball bearing and a fourth deep groove ball bearing respectively.
Preferably, the output shaft assembly comprises an output shaft rotationally connected with the inner wall of the secondary reduction gearbox and an output shaft gear fixedly connected on the intermediate shaft and meshed with the driven gear, the upper end and the lower end of the output shaft are rotationally connected with the inner wall of the secondary reduction gearbox through a fifth deep groove ball bearing and a sixth deep groove ball bearing respectively, and the lower end of the output shaft penetrates through the secondary reduction gearbox and stretches into the chain transmission gearbox.
Preferably, the driving sprocket is fixed on the output shaft by bolts.
Preferably, the input shaft gear, the driving gear, the driven gear and the output shaft gear are all involute helical gear structures.
Preferably, the chain transmission box is internally provided with a tensioning wheel assembly, the tensioning wheel assembly comprises a fixed shaft and a tensioning wheel, the fixed shaft is fixedly arranged in the chain transmission box through a bolt, the tensioning wheel is rotationally connected to the fixed shaft, and the tensioning wheel is positioned at the periphery of the lower edge of the toothed chain and is used for tensioning the toothed chain.
The beneficial effects of the utility model are as follows:
according to the utility model, the motor shaft of the motor is in spline connection with the input shaft assembly in the secondary reduction gearbox, so that the torque of the motor can be transmitted to the input shaft assembly of the secondary reduction gearbox, the input shaft assembly is meshed with the intermediate shaft assembly and the intermediate shaft assembly is meshed with the output shaft assembly, the torque can be transmitted to the output shaft assembly, and then the driving chain wheel fixed on the output shaft assembly is utilized to further drive the toothed chain to rotate, so that the driven chain wheel of the rear wheel shaft is driven to rotate, the driven chain wheel of the rear wheel shaft transmits power to the rear wheel of the motorcycle to drive the rear wheel of the motorcycle to rotate, the transmission structure is compact and simple, the power transmission is stable, and the noise is small; the chain adopts a toothed chain, plays a role in reducing noise, and can better replace the transmission of a complex electric motorcycle variable speed belt by combining a secondary reduction gearbox; through the bearing on input shaft subassembly, jackshaft subassembly and the output shaft subassembly all adopts deep groove ball bearing, can effectively practice thrift the cost, can improve transmission efficiency again.
Drawings
Fig. 1 is a schematic structural view of a transmission structure of an electric motorcycle with a toothed chain according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of an assembly of a toothed chain and a tensioner assembly according to an embodiment of the present utility model.
Reference numerals: the motor comprises a motor 1, a motor shaft 2, a spline connection 3, a first deep groove ball bearing 4, a front cover 5, a driven gear 6, an input shaft 7, a middle shaft 8, a driving gear 9, an output shaft 10, a driving sprocket 11, a toothed chain 12, a third deep groove ball bearing 13, a fifth deep groove ball bearing 14, a main box 15, a tensioning wheel assembly 16, a rear wheel shaft driven sprocket 17, a rear cover 18, a bearing collar 19, a rear wheel housing 20, a rear wheel shaft 21 of a motorcycle and a deep groove ball bearing 22.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model relates to an electric motorcycle transmission system structure with a toothed chain 12, which adopts a common transmission structure formed by a transmission motor 1, a secondary gear transmission and a chain transmission, and utilizes the output torque of the motor 1 to transmit kinetic energy after the torque of a secondary reduction gearbox is increased, a driving chain wheel 11 is fixed on a power output shaft assembly of the secondary reduction gearbox, the toothed driving chain is used for driving a rear wheel shaft driven chain wheel 17 of the chain transmission gearbox to rotate, and the power is transmitted to a rear wheel of a motorcycle through a rear wheel shaft.
Referring to fig. 1-2, an electric motorcycle drive train structure with a toothed chain 12 specifically includes a motor 1, a secondary reduction gearbox and a chain drive box; the motor 1 comprises a motor shaft 2, the motor shaft 2 is connected with an input shaft assembly in a secondary reduction gearbox through a spline, the input shaft assembly is used for transmitting torque of the motor 1 to the input shaft assembly of the secondary reduction gearbox, an intermediate shaft assembly meshed with the input shaft assembly and an output shaft assembly meshed with the intermediate shaft assembly are further arranged in the secondary reduction gearbox, and a driving sprocket 11 fixedly connected with the output shaft assembly, a rear wheel shaft driven sprocket 17 connected with the rear wheel transmission of the motorcycle and a toothed chain 12 connected with the driving sprocket 11 and the rear wheel shaft assembly in a transmission manner are arranged in the chain transmission gearbox.
In this embodiment, the secondary reduction gearbox comprises a main box 15 connected to the motorcycle frame, the side surface of the main box 15 is fixedly connected with a front cover 5 and a rear cover 18, the main box 15, the front cover 5 and the motor 1 form a closed space for covering the motor shaft 2, the input shaft assembly, the intermediate shaft assembly and the output shaft assembly, and the main box 15 and the rear cover 18 form a closed space for covering the driving sprocket 11, the rear axle driven sprocket 17 and the toothed chain 12.
In the embodiment, the motor 1 outputs torque, and is connected with an internal spline of an input shaft 7 in the secondary reduction gearbox through an external spline on a motor shaft 2, so that power is transmitted into the secondary reduction gearbox.
In this embodiment, the input shaft assembly includes first deep groove ball bearing 4, second deep groove ball bearing, input shaft 7 and input shaft gear, and the upper end of input shaft 7 is equipped with the internal spline, and the one end that motor shaft 2 kept away from motor 1 is equipped with the external spline with internal spline looks adaptation, and the upper end and the lower extreme of input shaft 7 are connected with the secondary reduction gearbox inner wall rotation through first deep groove ball bearing 4, second deep groove ball bearing respectively, and input shaft gear rigid coupling is on input shaft 7.
In this embodiment, the input shaft gear may be machined on the input shaft 7 by an integrally formed machining method, or may be manufactured by a split press-fitting method, which is not limited herein, as long as the input shaft gear can be fixed on the input shaft 7, and the input shaft 7 is rotated relative to the inner wall of the secondary reduction gearbox by sleeving the first deep groove ball bearing 4 and the second deep groove ball bearing on the upper end and the lower end of the input shaft 7, respectively.
In this embodiment, the intermediate shaft assembly includes an intermediate shaft 8 rotatably connected to the inner wall of the secondary reduction gearbox, a driving gear 9 fixedly connected to the intermediate shaft 8 and meshed with the input shaft gear, and a driven gear 6 fixedly connected to the intermediate shaft 8 and meshed with the output shaft assembly, wherein the upper end and the lower end of the intermediate shaft 8 are rotatably connected to the inner wall of the secondary reduction gearbox through a third deep groove ball bearing 13 and a fourth deep groove ball bearing, respectively.
In the embodiment, the upper end and the lower end of the intermediate shaft 8 are sleeved with a third deep groove ball bearing 13 and a fourth deep groove ball bearing to realize the rotation of the intermediate shaft 8 relative to the inner wall of the secondary reduction gearbox; and the driving gear 9 and the driven gear 6 are fixedly connected on the intermediate shaft 8, wherein the installation and processing modes of the driving gear 9 and the driven gear 6 are the same as those of the input shaft gear, and are not described herein, torque is transmitted to the intermediate shaft 8 by utilizing the meshing between the input shaft gear and the driving gear 9, and then the torque is transmitted to the output shaft assembly by meshing between the driven gear 6 on the intermediate shaft 8 and the output shaft gear on the output shaft 10.
In this embodiment, the output shaft assembly includes an output shaft 10 rotationally connected to the inner wall of the secondary reduction gearbox, and an output shaft gear fixedly connected to the intermediate shaft 8 and meshed with the driven gear 6, where the upper end and the lower end of the output shaft 10 are rotationally connected to the inner wall of the secondary reduction gearbox through a fifth deep groove ball bearing 14 and a sixth deep groove ball bearing, respectively, and the lower end of the output shaft 10 extends into the chain transmission gearbox through the secondary reduction gearbox.
In this embodiment, the manners of the fifth deep groove ball bearing 14 and the sixth deep groove ball bearing sleeved on the upper end and the lower end of the output shaft 10 are the same as those described above, and the structures of the first deep groove ball bearing 4, the second deep groove ball bearing, the third deep groove ball bearing 13, the fourth deep groove ball bearing, the fifth deep groove ball bearing 14 and the sixth deep groove ball bearing are the same, and the deep groove ball bearings are adopted for the bearings on the input shaft assembly, the intermediate shaft assembly and the output shaft assembly, so that the cost can be effectively saved, and the transmission efficiency can be improved; in addition, the bearing retainer ring 19 for avoiding the phenomenon of the ring of each deep groove ball bearing is fixedly connected inside the secondary reduction gearbox and the chain transmission gearbox, so that the phenomenon of the ring of each deep groove ball bearing is prevented, and the performance of each deep groove ball bearing is improved, and the safety performance is high.
In the present embodiment, the drive sprocket 11 is fixed to the output shaft 10 by bolts.
In the present embodiment, the drive sprocket 11 is fixed to the output shaft 10 of the secondary reduction gearbox by bolts, and the output shaft 10 transmits torque to the drive sprocket 11, driving the sprocket 11.
In the present embodiment, the rear wheel axle driven sprocket 17 is fixed to the rear wheel axle 21 by bolts, so that the rear wheel axle driven sprocket 17 transmits torque to the rear wheel axle 21, and the end of the rear wheel axle 21 is mounted in the rear wheel housing 20 by the deep groove ball bearing 22, and the bearing collar 19 for avoiding the occurrence of the running phenomenon of the deep groove ball bearing 22 is also fixedly connected in the rear wheel housing 20, and the rear wheel axle 21 of the motorcycle drives the rear wheel of the electric motorcycle to rotate by the power transmitted from the driving sprocket 11, the toothed chain 12 and the rear wheel axle driven sprocket 17.
In this embodiment, the input shaft gear, the driving gear 9, the driven gear 6 and the output shaft gear are all involute helical gear structures, and adopt involute helical gear structures, so that the noise reduction effect can be achieved.
In this embodiment, the chain transmission case is further provided therein with a tensioning wheel assembly 16, the tensioning wheel assembly 16 includes a fixing shaft and a tensioning wheel, the fixing shaft is fixedly mounted in the chain transmission case by bolts, the tensioning wheel is rotatably connected to the fixing shaft, and the tensioning wheel is located at the periphery of the lower edge of the toothed chain 12 and is used for tensioning the toothed chain 12.
In this embodiment, by providing the tensioner assembly 16, the toothed chain 12 can adjust the degree of tensioning by the tensioner assembly 16.
In summary, the electric motorcycle transmission system structure with the toothed chain 12 adopts a toothed chain to replace a belt transmission scheme, then the whole transmission system realizes speed reduction and torque increase through a secondary gear in a secondary reduction box, and bearings on all shafts in the secondary reduction box adopt deep groove ball bearings, so that the cost is saved, the transmission efficiency is improved, meanwhile, the adopted toothed chain 12 is also called a silent chain, is formed by alternately assembling a series of toothed chain plates and guide plates and connecting hinge elements of pin shafts or combinations, and is mainly used for the working conditions of high speed, heavy load, low noise and large center distance, and the transmission performance is superior to that of toothed belt transmission, gear transmission and roller chain transmission; in addition, the toothed chain 12 may be tensioned via a tensioner assembly 16.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (7)
1. The utility model provides an electric motor car transmission structure of belt tooth form chain, includes motor, second grade reducing gear box and chain drive case, its characterized in that, the motor includes a motor shaft, the motor shaft passes through spline connection with the input shaft subassembly in the second grade reducing gear box for with the moment of torsion transmission of motor to the input shaft subassembly of second grade reducing gear box still be equipped with in the second grade reducing gear box with input shaft subassembly engaged with jackshaft subassembly and with jackshaft subassembly engaged with output shaft subassembly, be equipped with in the chain drive case with output shaft subassembly fixed connection's drive sprocket, with the rear axle driven sprocket and the transmission of motorcycle rear wheel transmission connection in the tooth form chain on drive sprocket and the rear axle subassembly.
2. The electric motorcycle transmission structure with the toothed chain according to claim 1, wherein the input shaft assembly comprises a first deep groove ball bearing, a second deep groove ball bearing, an input shaft and an input shaft gear, an inner spline is arranged at the upper end of the input shaft, an outer spline matched with the inner spline is arranged at one end, far away from the motor, of the motor shaft, the upper end and the lower end of the input shaft are respectively connected with the inner wall of the secondary reduction gearbox in a rotating mode through the first deep groove ball bearing and the second deep groove ball bearing, and the input shaft gear is fixedly connected to the input shaft.
3. The transmission structure of an electric motorcycle with a toothed chain according to claim 2, wherein the intermediate shaft assembly comprises an intermediate shaft rotationally connected with the inner wall of the secondary reduction gearbox, a driving gear fixedly connected to the intermediate shaft and meshed with the input shaft gear, and a driven gear fixedly connected to the intermediate shaft and meshed with the output shaft assembly, and the upper end and the lower end of the intermediate shaft are rotationally connected with the inner wall of the secondary reduction gearbox through a third deep groove ball bearing and a fourth deep groove ball bearing respectively.
4. The electric motorcycle transmission structure with the toothed chain according to claim 3, wherein the output shaft assembly comprises an output shaft rotationally connected with the inner wall of the secondary reduction gearbox and an output shaft gear fixedly connected to the intermediate shaft and meshed with the driven gear, the upper end and the lower end of the output shaft are rotationally connected with the inner wall of the secondary reduction gearbox through a fifth deep groove ball bearing and a sixth deep groove ball bearing respectively, and the lower end of the output shaft penetrates through the secondary reduction gearbox and stretches into the chain transmission gearbox.
5. The transmission structure of an electric motorcycle with a toothed chain according to claim 4, wherein the driving sprocket is fixed to the output shaft by bolts.
6. The electric motorcycle transmission structure with the toothed chain according to claim 4, wherein the input shaft gear, the driving gear, the driven gear and the output shaft gear are all involute helical gear structures.
7. The electric motorcycle transmission structure with the toothed chain according to claim 1, wherein a tensioning wheel assembly is further arranged in the chain transmission box, the tensioning wheel assembly comprises a fixed shaft and a tensioning wheel, the fixed shaft is fixedly arranged in the chain transmission box through bolts, the tensioning wheel is rotatably connected to the fixed shaft, and the tensioning wheel is located at the periphery of the lower edge of the toothed chain and is used for tensioning the toothed chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320233079.7U CN219257615U (en) | 2023-02-16 | 2023-02-16 | Electric motorcycle driving structure with toothed chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320233079.7U CN219257615U (en) | 2023-02-16 | 2023-02-16 | Electric motorcycle driving structure with toothed chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219257615U true CN219257615U (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320233079.7U Active CN219257615U (en) | 2023-02-16 | 2023-02-16 | Electric motorcycle driving structure with toothed chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219257615U (en) |
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2023
- 2023-02-16 CN CN202320233079.7U patent/CN219257615U/en active Active
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