CN215971108U - Baha cycle racing transmission structure - Google Patents
Baha cycle racing transmission structure Download PDFInfo
- Publication number
- CN215971108U CN215971108U CN202122477013.6U CN202122477013U CN215971108U CN 215971108 U CN215971108 U CN 215971108U CN 202122477013 U CN202122477013 U CN 202122477013U CN 215971108 U CN215971108 U CN 215971108U
- Authority
- CN
- China
- Prior art keywords
- shaft
- transmission
- gear
- gear set
- drive
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 100
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010862 gear shaping Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Images
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The utility model discloses a driving structure of a Baha racing car, which comprises a front wheel driving component, a rear wheel driving component and a central driving component, wherein the rear wheel driving component is connected with the front wheel driving component through the central driving component so as to switch four-wheel drive/rear drive and change the direction of torque; the rear wheel driving assembly comprises an engine, a continuously variable transmission in transmission connection with the engine and a secondary speed reducer in transmission connection with the continuously variable transmission, the secondary speed reducer is arranged on a rear wheel driving axle, the central transmission assembly comprises a transfer case in transmission connection with the secondary speed reducer and a central transmission shaft in transmission connection with the transfer case, and the transfer case is additionally arranged to switch the conversion of four-wheel drive and rear drive and the conversion of torque direction; transmitting torque to the front wheels by adding a central transmission; the steering capacity of the front wheels is improved by adding a front wheel driving axle; the transmission system has firm structure and high transmission efficiency.
Description
Technical Field
The utility model relates to the field of racing car transmission mechanisms, in particular to a baha racing car transmission structure.
Background
The Chinese society of automotive engineering, Baja Aescu (BSC) is a race designed, manufactured and tested by the motor of colleges and universities, vocational colleges and related professionals in the field of school teams. The competition is a brand new skill type talent culture platform developed by the Chinese automobile engineering society after the successful holding of 'Chinese college student equation automobile competition (FSC)'. The method is a brand-new technical education and engineering practice education means, integrates the technical and interestingness into a whole, and becomes a socialized public platform and a non-profit social public career in the non-education field, which are the most important to discover and culture automobile industry skill type talents, of all countries; most of the existing racing cars are single rear-drive cars, the transmission efficiency is low, and the use requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a driving structure of a Baha racing car comprises a front wheel driving component, a rear wheel driving component and a central driving component, wherein the rear wheel driving component is connected with the front wheel driving component through the central driving component so as to switch four-wheel drive/rear drive and change the torque direction; the rear wheel driving assembly comprises an engine, a continuously variable transmission in transmission connection with the engine and a secondary speed reducer in transmission connection with the continuously variable transmission, the secondary speed reducer is arranged on a rear wheel driving axle, the central driving assembly comprises a transfer case in transmission connection with the secondary speed reducer and a central driving shaft in transmission connection with the transfer case, the front wheel driving assembly comprises a differential in transmission connection with the central driving shaft, and the differential is arranged on the front wheel driving axle.
Further, parallel arrangement has primary shaft, secondary shaft, third axle in the secondary reducer, the primary shaft is connected with the transmission of buncher output to through first gear train and secondary shaft meshing transmission, the secondary shaft is connected with the transfer case transmission to through second gear train and third axle meshing transmission, the third axle both ends are connected with rear wheel drive axle transmission through first ball cage universal joint respectively.
Furthermore, a fourth shaft is arranged in the transfer case, one end of the fourth shaft is in meshing transmission with the second shaft through a third gear set, and the other end of the fourth shaft is in transmission connection with the central transmission shaft through a first cross universal joint.
Furthermore, the other end of the central transmission shaft is in transmission connection with a fifth shaft through a second cross universal joint, the fifth shaft is in transmission connection with a sixth shaft through a fourth gear set, one end of the sixth shaft is in transmission connection with a differential, and the other end of the sixth shaft is in transmission connection with a front wheel drive axle through a second ball cage universal joint.
Furthermore, the fourth shaft comprises a polished rod section connected with the first cross universal joint and a synchronizing section arranged at one end of the polished rod section, a synchronizing ring is arranged on the synchronizing section in a matched mode, and a shifting fork is arranged outside the synchronizing ring, so that the synchronizing ring moves back and forth along the length direction of the synchronizing section under the driving of the shifting fork; the third gear set is including setting up in the terminal gear one of third axle and with gear one meshing driven gear two, two one ends of gear pass through bearing swing joint on the polished rod section of fourth axle, the other end inner wall be equipped with synchronizing ring complex synchronizing assembly for when the synchronizing ring removes to coordinating with gear two, the third gear set drives the synchronous rotation of fourth axle, realizes the cycle racing four-wheel drive, when making when the synchronizing ring removes to breaking away from gear two, third gear set idle running realizes the cycle racing back drive.
Furthermore, the outer wall of the synchronizing section is provided with a spline along the length direction of the outer wall of the synchronizing section, and the inner wall of the synchronizing ring is provided with a key groove matched with the spline, so that the synchronizing ring can move along the length direction of the synchronizing section.
Furthermore, the synchronizing assembly comprises outer gear shaping arranged at one end of the synchronizing ring close to the second gear and inner gear shaping arranged on the inner wall of the second gear, so that the second gear drives the synchronizing wheel to synchronously rotate through the meshing of the inner gear shaping and the outer gear shaping.
Further, the first gear set and the second gear set are column gear sets.
Further, the third gear set and the fourth gear set are bevel gear sets.
Further, the continuously variable transmission is a CVTechAAB continuously variable transmission CVT, and the transmission ratio range of the CVT is 0.4-3.
After the scheme is adopted, the utility model has the following advantages: the transfer case is added to switch the conversion between the four-wheel drive and the rear drive and the change of the torque direction; transmitting torque to the front wheels by adding a central transmission; the steering capacity of the front wheels is improved by adding a front wheel driving axle; the transmission system has firm structure and high transmission efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a driving structure of a Baha racing car of the utility model.
Fig. 2 is an internal schematic view of a driving structure of the baha racing car of the present invention.
FIG. 3 is a schematic transmission diagram of the driving structure of the Baha racing car.
FIG. 4 is a schematic drawing showing the split of the transfer case of the driving structure of the Baha racing car.
FIG. 5 is a transmission diagram of the four-wheel drive state of the driving structure of the Baha racing car.
FIG. 6 is a transmission diagram of the rear-drive state of the driving structure of the Baha racing car.
In the figure: 1. a front wheel transmission assembly 11, a differential mechanism 12, a second cross universal joint 13, a fifth shaft 14, a fourth gear set 15, a sixth shaft 16 and a second ball cage type universal joint;
2. a rear wheel transmission assembly 21, a continuously variable transmission 22, a secondary speed reducer 221, a first shaft 222, a second shaft 223, a third shaft 224, a first gear set 225, a second gear set 226 and a first ball cage type universal joint;
3. a central transmission component 31, a transfer case 311, a fourth shaft 311A, a polished rod section 311B, a synchronous section 311C, a spline 312, a third gear set 312A, a first gear 312B, a second gear 312C, a bearing 312D, an inner inserted tooth 313, a first cross universal joint 32, a central transmission shaft 33, a synchronous ring 331, a key groove 332, an outer inserted tooth 34 and a shifting fork;
4. a rear wheel drive axle and 5 a front wheel drive axle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, or an orientation or a positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, and the indication or the suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, the present invention should not be construed as being limited. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
With reference to fig. 1, 2 and 3, the driving structure of the Baha racing car comprises a front wheel driving component 1, a rear wheel driving component 2 and a central driving component 3, wherein the rear wheel driving component 2 is connected with the front wheel driving component 1 through the central driving component 3 to switch four-wheel driving/rear driving and change torque directions; the rear wheel driving assembly 2 comprises an engine, a continuously variable transmission 21 in transmission connection with the engine and a secondary speed reducer 22 in transmission connection with the continuously variable transmission 21, the secondary speed reducer 22 is arranged on the rear wheel driving axle 4, the central driving assembly 3 comprises a transfer case 31 in transmission connection with the secondary speed reducer 22 and a central driving shaft 32 in transmission connection with the transfer case 31, the front wheel driving assembly 1 comprises a differential 11 in transmission connection with the central driving shaft 32, and the differential 11 is arranged on the front wheel driving axle 5; the continuously variable transmission 21 is a CVTechAAB Continuously Variable Transmission (CVT) and has a transmission ratio ranging from 0.4 to 3.
A first shaft 221, a second shaft 222 and a third shaft 223 are arranged in parallel in the secondary speed reducer 22, the first shaft 221 is in transmission connection with the output end of the continuously variable transmission 21 and is in meshing transmission with the second shaft 222 through a first gear set 224, the second shaft 222 is in transmission connection with the transfer case 31 and is in meshing transmission with the third shaft 223 through a second gear set 225, and two ends of the third shaft 223 are in transmission connection with the rear wheel drive axle 4 through a first ball-cage type universal joint 226; the first gear set 224 and the second gear set 225 are column gear sets.
A fourth shaft 311 is arranged in the transfer case 31, one end of the fourth shaft 311 is in meshing transmission with the second shaft 222 through a third gear set 312, the other end of the fourth shaft 311 is in transmission connection with the central transmission shaft 32 through a first cross universal joint 313, and the third gear set 312 is a bevel gear set.
The other end of the central transmission shaft 32 is in transmission connection with a fifth shaft 13 through a second cross universal joint 12, the fifth shaft 13 is in transmission connection with a sixth shaft 15 through a fourth gear set 14, one end of the sixth shaft 15 is in transmission connection with a differential 11, the other end of the sixth shaft is in transmission connection with a front wheel drive axle 5 through a second ball-cage universal joint 16, and the fourth gear set 14 is a bevel gear set.
In this embodiment, the rear-drive/four-drive switching of the racing car is realized by the transfer case 31, and with reference to fig. 4, the following is specifically performed: the fourth shaft 311 includes a polished rod segment 311A connected to the first cross universal joint 313 and a synchronization segment 311B disposed at one end of the polished rod segment 311A, the synchronization segment 311B is provided with a synchronization ring 33 in a matching manner, specifically, the outer wall of the synchronization segment 311B is provided with a spline 311C along the length direction thereof, the inner wall of the synchronization ring 33 is provided with a key slot 331 matched with the spline 311C, a shift fork 34 is disposed outside the synchronization ring 33, the shift fork 34 is driven by other external mechanisms to move, and thus the synchronization ring 33 is driven by the shift fork 34 to move back and forth along the length direction of the synchronization segment 311B;
the third gear set 312 includes a first gear 312A disposed at the end of the third shaft 223 and a second gear 312B in meshing transmission with the first gear 312A, one end of the second gear 312B is movably connected to the polish rod section 311A of the fourth shaft 311 through a bearing 312C, and the inner wall of the other end is provided with a synchronizing assembly matched with the synchronizing ring 33, specifically, the synchronizing assembly includes an outer inserted tooth 332 disposed at one end of the synchronizing ring 22 close to the second gear 312B and an inner inserted tooth 312D disposed on the inner wall of the second gear 312B;
with reference to fig. 5, when the synchronizing ring 33 is meshed with the second gear 312B through the external gear 332, since the first gear 312A is meshed with the second gear 312B for transmission, the second gear 312B drives the synchronizing ring 33 to rotate, so that the fourth shaft 311 rotates synchronously, and power is transmitted to the front axle, thereby realizing four-wheel drive of the racing car;
referring to fig. 6, when the shifting fork 34 drives the synchronizing ring 33 outwards, the synchronizing ring 33 is disengaged from the second gear 312B, and at this time, the first gear 312A is still in meshed transmission with the second gear 312B, but the second gear 312B idles on the fourth shaft 311 through the bearing 312C, so that power cannot be transmitted to the front axle, and the rear drive of the racing car is realized;
first, efficiency calculation of each stage of transmission
Total efficiency η of transmissionΣLooking up the table to obtain the bearing efficiency etaBearing assembly0.98, bevel gear efficiency ηBevel gear0.95, spur gear ηColumn tooth0.96, cross universal joint etaCross-shaped0.98, rzeppa universal joint ηBall cage0.98, CVT Transmission ηCVT0.8. Then
The rear-drive efficiency is as follows:
the four-wheel drive efficiency is as follows:
from the above, it can be seen that the four-wheel drive efficiency is high, the racing cars should be driven in a rear drive mode as much as possible during a race, and if the rear wheels sink into a road surface such as a puddle, the four-wheel drive is switched to get rid of difficulties. The intermediate shaft of the reducer should be checked twice, four-wheel drive and rear drive.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. A driving structure of Baha racing car is characterized by comprising a front wheel driving component, a rear wheel driving component and a central driving component, wherein the rear wheel driving component is connected with the front wheel driving component through the central driving component to switch four-wheel drive/rear drive and change the torque direction; the rear wheel driving assembly comprises an engine, a continuously variable transmission in transmission connection with the engine and a secondary speed reducer in transmission connection with the continuously variable transmission, the secondary speed reducer is arranged on a rear wheel driving axle, the central driving assembly comprises a transfer case in transmission connection with the secondary speed reducer and a central driving shaft in transmission connection with the transfer case, the front wheel driving assembly comprises a differential in transmission connection with the central driving shaft, and the differential is arranged on the front wheel driving axle.
2. The baha racing car transmission structure as claimed in claim 1, wherein a first shaft, a second shaft and a third shaft are arranged in parallel in the secondary speed reducer, the first shaft is in transmission connection with the output end of the continuously variable transmission and is in meshing transmission with the second shaft through a first gear set, the second shaft is in transmission connection with the transfer case and is in meshing transmission with the third shaft through a second gear set, and two ends of the third shaft are in transmission connection with the rear wheel drive axle through first ball cage type universal joints respectively.
3. The drive structure of claim 1, wherein a fourth shaft is arranged in the transfer case, one end of the fourth shaft is in meshed drive with the second shaft through a third gear set, and the other end of the fourth shaft is in drive connection with the central drive shaft through a first cross universal joint.
4. The drive structure of Baha racing car as claimed in claim 3, wherein the other end of the central drive shaft is connected with a fifth shaft through a second cross universal joint, the fifth shaft is connected with a sixth shaft through a fourth gear set, one end of the sixth shaft is connected with the differential drive, and the other end is connected with the front wheel drive axle through a second ball-cage universal joint.
5. The transmission structure of claim 3, wherein the fourth shaft comprises a polished rod section connected with the first cross universal joint and a synchronizing section arranged at one end of the polished rod section, the synchronizing section is provided with a synchronizing ring in a matching manner, and a shifting fork is arranged outside the synchronizing ring, so that the synchronizing ring moves back and forth along the length direction of the synchronizing section under the driving of the shifting fork; the third gear set is including setting up in the terminal gear one of third axle and with gear one meshing driven gear two, two one ends of gear pass through bearing swing joint on the polished rod section of fourth axle, the other end inner wall be equipped with synchronizer ring complex synchronizing assembly for when the synchronizer ring remove to with gear two cooperations, the third gear set drives the synchronous rotation of fourth axle, realizes the cycle racing four-wheel drive, when the synchronizer ring removes to breaking away from gear two, the idle running of third gear set realizes the cycle racing back drive.
6. The transmission structure of claim 5, wherein the outer wall of the synchronizing section is provided with splines along the length direction thereof, and the inner wall of the synchronizing ring is provided with a key groove which is matched with the splines, so that the synchronizing ring can move along the length direction of the synchronizing section.
7. The transmission structure of claim 5, wherein the synchronizing assembly comprises an outer gear set disposed at one end of the synchronizing ring near the gear wheel and an inner gear set disposed on an inner wall of the gear wheel, such that the gear wheel drives the synchronizing wheel to rotate synchronously through engagement of the inner gear set and the outer gear set.
8. The transmission structure of claim 2, wherein the first gear set and the second gear set are cylindrical gear sets.
9. The transmission structure of claim 3, wherein the third gear set and the fourth gear set are bevel gear sets.
10. The driving structure of Bahaar racing car as claimed in claim 1, wherein the continuously variable transmission is CVT of CVTechAAB, and the transmission ratio is in the range of 0.4-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122477013.6U CN215971108U (en) | 2021-10-14 | 2021-10-14 | Baha cycle racing transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122477013.6U CN215971108U (en) | 2021-10-14 | 2021-10-14 | Baha cycle racing transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215971108U true CN215971108U (en) | 2022-03-08 |
Family
ID=80508153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122477013.6U Expired - Fee Related CN215971108U (en) | 2021-10-14 | 2021-10-14 | Baha cycle racing transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215971108U (en) |
-
2021
- 2021-10-14 CN CN202122477013.6U patent/CN215971108U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2013063756A (en) | Hybrid power train of vehicle | |
| US4399717A (en) | Change-speed transmission for wheeled vehicles | |
| CN105370820A (en) | Automatic ten-gear double-clutch transmission | |
| CN215971108U (en) | Baha cycle racing transmission structure | |
| JPS5884246A (en) | Transmission for automobile | |
| CN203516613U (en) | Dual-clutch automatic transmission | |
| CN214689029U (en) | Transmission power transmission device and automobile | |
| EP0821183A2 (en) | Compact manual transaxle | |
| CN103438161A (en) | Double-clutch automatic gearbox | |
| CN203463568U (en) | Double-clutch automatic transmission | |
| CN215153911U (en) | Dual-motor dual-clutch hybrid power transmission and vehicle | |
| CN212297455U (en) | DCT automatic transmission system of four-gear electrically driven automobile | |
| CN201359059Y (en) | Multi-gear power shift planetary gearbox | |
| CN103438159A (en) | Double-clutch automatic gearbox | |
| CN114161878A (en) | External electric drive axle structure of bi-motor | |
| CN106931084A (en) | A kind of pair of speed transmission of clutch two | |
| CN106931128A (en) | A kind of four-speed gear box used for electric vehicle | |
| CN112128323B (en) | Two-gear reduction gearbox with Simpson type planetary gear structure and power transmission logic | |
| CN221374357U (en) | Three-gear speed change structure of rear axle | |
| CN109695664A (en) | An a kind of helicopter point torsion transmission decelerating device | |
| CN218536323U (en) | New forms of energy truck keeps off more and drives bridge construction | |
| CN218400206U (en) | Multi-gear coaxial electric drive bridge structure | |
| SU1113287A1 (en) | Gear box for front axle drive automotive vehicle | |
| CN112406511B (en) | Planetary gear train component, power system, control method and related equipment | |
| CN218805224U (en) | Multi-gear electric drive bridge structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |