CN107415683B - Electric gear shifting mechanism suitable for sequential gearbox engine - Google Patents
Electric gear shifting mechanism suitable for sequential gearbox engine Download PDFInfo
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- CN107415683B CN107415683B CN201710280093.1A CN201710280093A CN107415683B CN 107415683 B CN107415683 B CN 107415683B CN 201710280093 A CN201710280093 A CN 201710280093A CN 107415683 B CN107415683 B CN 107415683B
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- speed reducer
- gear shifting
- driving motor
- motor
- coupler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention provides an electric gear shifting mechanism suitable for a sequential gearbox engine, which comprises a driving device, a control device and a transmission device, wherein the driving device comprises a driving motor and a speed reducer, the speed reducer is arranged on a speed reducer bracket, the driving motor is fixedly connected with the speed reducer through a power output gear, the transmission device comprises a coupler and a gear shifting lever, and the driving motor, the speed reducer, the coupler and the gear shifting lever are sequentially connected; the control device is fixed on a shell of the speed reducer through a bolt and comprises a motor control module and a main control signal output circuit board, wherein the motor control module is used for acquiring the rotation angle of an output shaft of the speed reducer and converting the rotation angle into signal feedback to form a pulse width modulation signal for controlling a driving motor; the main control signal output circuit board is used for accurately controlling the rotation angle of the motor. Compared with the traditional pneumatic gear shifting mode, the invention has the advantages of simpler and more accurate gear shifting and quicker response speed.
Description
Technical Field
The invention relates to the field of sequential gearbox engines, in particular to an electric gear shifting mechanism suitable for a sequential gearbox engine, which is suitable for a racing sequential gearbox engine.
Background
In the field of racing, for example, FSC formula racing, the development of racing is continually pursuing faster, lighter and more stable. First, in China, most of the vehicle teams adopt a pneumatic gear shifting system, and part of the vehicle teams already have a mature technology. However, the pneumatic gear shifting system has the defects of heavy weight, frequent inflation of the gas cylinder and low system reliability. Secondly, based on the structure of the sequential gearbox engine, when in 1 gear, the gear is shifted down, if the shift down angle is small, the gear is shifted down to neutral, and if the shift down angle is slightly large, the gear is shifted down to 2 gears, so that the conventional pneumatic gear shift cannot realize the idle shift from 1 gear to the idle shift when in a parking state. Electrically controlled shifting will achieve this through program debugging. In addition, because the gear shifting operation of the racing car at present mainly depends on judgment and reaction of a rider, in order to reduce the excessive dependence of the racing car on the rider and avoid errors caused by the lack of reaction of the rider, it is necessary to design and perfect a more intelligent electric gear shifting system, and according to program design, in some competition projects, for example, linear acceleration dynamic racing, complete automatic acceleration can be realized, the burden of the rider can be greatly lightened, and the best achievement is greatly facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is to be applicable to the problems, and provide an electric gear shifting mechanism applicable to a sequential gearbox engine, so that the traditional pneumatic gear shifting mechanism is greatly simplified, the weight of the whole vehicle is reduced, and the burden of a driver is reduced.
The invention is realized by the following technical scheme:
the electric gear shifting mechanism comprises a driving device, a control device and a transmission device, wherein the driving device comprises a driving motor and a speed reducer, the speed reducer is arranged on a speed reducer bracket, the driving motor is fixedly connected with the speed reducer through a power output gear, the transmission device comprises a coupler and a gear shifting lever, and the driving motor, the speed reducer, the coupler and the gear shifting lever are sequentially connected; the control device is fixed on the shell of the speed reducer through a bolt and comprises a motor control module and a main control signal output circuit board, wherein the motor control module is connected with a driving motor circuit, and is used for acquiring the rotation angle of an output shaft of the speed reducer and converting the rotation angle into signal feedback to form a pulse width modulation signal for controlling the driving motor; the main control signal output circuit board is calibrated according to the angle required by gear shifting of the sequential gearbox engine in the running working condition of the racing car, and the pulse modulation signal is transmitted to the driving motor through the shielding wire to accurately control the rotation angle of the motor.
Further, the motor control module comprises a controller and an angular displacement sensor connected with the output shaft of the speed reducer, wherein the angular displacement sensor is used for collecting the rotation angle of the output shaft of the speed reducer, converting the rotation angle into a signal and feeding the signal back to the controller, and the controller is used for generating a pulse width modulation signal for controlling the driving motor.
Further, the controller is an STM32C8T6F103 singlechip.
Further, the driving motor is fixed on the shell of the speed reducer through a bolt, and the output end of the driving motor is directly connected with the input end of the speed reducer through a pair of gears.
Further, the rated driving voltage adopted by the driving motor is direct current 12V, the rotating speed reaches 240rpm, and the output torque of the output end of the speed reducer reaches 5.4 N.m.
Further, the speed reducer comprises a plurality of groups of meshing gears, the speed reducer shell is fixed on a speed reducer bracket through bolts, and the speed reducer has a speed reduction ratio of 1:96.
further, D-shaped holes are formed in two ends of the coupler, D-shaped columns in driving connection with the D-shaped holes are arranged at the output end of the speed reducer and the gear shifting lever, and clamping bolts used for fixing the relative positions of the D-shaped holes and the D-shaped columns are radially arranged at two ends of the coupler.
Further, the coupler is a spring coupler, torque is transmitted, damping is achieved, and dynamic performance of the mechanism is improved.
Compared with the prior art, the invention has the following advantages and effects:
the invention has simple structure, stable performance, simple operation and high gear shifting success rate, and is very suitable for the engine of the sequential gearbox.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a left side exploded view of an embodiment of the invention.
Fig. 3 is a schematic perspective exploded view of an embodiment of the invention.
Wherein: 1-a drive motor; 2-a control device; 3-speed reducer; 4-a decelerator support; 5-the output end of the speed reducer; a 6-D column; 7-D type holes; 8-coupling; 9-clamping bolts; 10-gear shift lever.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific examples, which are not to be construed as limiting the embodiments of the present invention.
As shown in fig. 1 to 3, an electric gear shifting mechanism suitable for a sequential gearbox engine comprises a driving device, a control device and a transmission device, wherein the driving device comprises a driving motor 1 and a speed reducer 3, the speed reducer 3 is arranged on a speed reducer bracket 4, the driving motor 1 is fixed on a shell of the speed reducer 3 through bolts, and an output end of the driving motor 1 is directly connected with an input end of the speed reducer 3 through a pair of gears. The transmission device comprises a coupler 8 and a gear shift lever 10, wherein the driving motor 1, the speed reducer 3, the coupler 8 and the gear shift lever 10 are sequentially connected, and the coupler 8 is a spring coupler and is used for transmitting torque, buffering and damping, improving the dynamic performance of the mechanism and meeting the use requirements of working conditions with severe vibration and slight deviation.
The control device comprises a motor control module and a main control signal output circuit board, wherein the motor control module is in circuit connection with the driving motor 1 and is used for collecting the rotation angle of the output shaft 5 of the speed reducer and converting the rotation angle into signal feedback to form a pulse width modulation signal for controlling the driving motor; the main control signal output circuit board is calibrated according to the angle required by gear shifting of the sequential gearbox engine in the running working condition of the racing car, and the pulse modulation signal is transmitted to the driving motor 1 through the shielding wire to accurately control the motor rotation angle.
Specifically, in this embodiment, the motor control module includes a controller, an angular displacement sensor connected with the output shaft 5 of the speed reducer, where the angular displacement sensor is used to collect the rotation angle of the output shaft 5 of the speed reducer and convert the rotation angle into a signal, and the signal is fed back to the controller, where the controller is an STM32C8T6F103 single-chip microcomputer and is used to generate a pulse width modulation signal for controlling the driving motor.
Specifically, the speed reducer 3 is composed of a plurality of groups of meshing gears, the casing of the speed reducer 3 is fixed on the speed reducer bracket 4 through bolts, and the speed reduction ratio of the speed reducer 3 is 1:96.
the rated driving voltage adopted by the driving motor 1 is direct current 12V, the rotating speed reaches 240rpm, and after the speed is reduced, the output torque of the output end 5 of the speed reducer reaches 5.4 N.m.
The two ends of the coupler 8 are provided with D-shaped holes 7, the output end 5 of the speed reducer and the gear shift lever 10 are respectively provided with a D-shaped column 6 in driving connection with the D-shaped holes 7, and the two ends of the coupler 8 are radially provided with clamping bolts 9 for fixing the opposite positions of the D-shaped holes 7 and the D-shaped columns 6. The coupling 8 is connected to the output end 5 of the speed reducer through a pair of D-shaped columns 6 and D-shaped holes 7 which can form clearance fit, and is fastened by a clamping bolt for transmitting torque. The gear shift lever 10 transmits shift torque into the sequential gearbox to achieve a shift demand.
In this embodiment, the motor control module is provided with an angular displacement sensor and is connected to the output shaft 5 of the speed reducer, so as to collect the rotation angle and convert the rotation angle into signal feedback, and perform control by using a pulse width modulation signal. The main control signal output circuit board is calibrated according to the angle required by gear shifting of the sequential gearbox engine in the running working condition of the racing car, and the rotating angle of the motor is precisely controlled by transmitting pulse modulation signals through the shielding wire. The angle required by gear shifting of the actual test sequence type gearbox engine is different between the upshift and the downshift, and the angle difference exists in the conversion between different gears, so that the differences can be accurately debugged through the motor control module, and the gear shifting success rate is improved.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the invention should be made and equivalents should be construed as falling within the scope of the invention.
Claims (6)
1. An electric gear shifting mechanism suitable for a sequential gearbox engine is characterized by comprising a driving device, a control device and a transmission device,
the driving device comprises a driving motor (1) and a speed reducer (3), the speed reducer (3) is arranged on a speed reducer bracket (4), the driving motor (1) is fixedly connected with the speed reducer (3) through a power output gear, the transmission device comprises a coupler (8) and a gear shift lever (10), the driving motor (1), the speed reducer (3), the coupler (8) and the gear shift lever (10) are sequentially connected, and the coupler (8) is a spring coupler;
the control device is fixed on the shell of the speed reducer (3) through a bolt and comprises a motor control module and a main control signal output circuit board, wherein the motor control module is connected with a circuit of the driving motor (1), and the motor control module is used for acquiring the rotation angle of an output shaft (5) of the speed reducer and converting the rotation angle into signal feedback to form a pulse width modulation signal for controlling the driving motor; the main control signal output circuit board is calibrated according to the angle required by gear shifting of the sequential gearbox engine in the running working condition of the racing car, and transmits pulse modulation signals to the driving motor (1) through the shielding wire to accurately control the rotation angle of the motor;
the motor control module comprises a controller and an angular displacement sensor connected with a speed reducer output shaft (5), wherein the angular displacement sensor is used for collecting the rotation angle of the speed reducer output shaft (5) and converting the rotation angle into a signal to be fed back to the controller, the controller is used for generating a pulse width modulation signal for controlling a driving motor, the angle required by gear shifting of the sequential gearbox engine is different in corresponding angle during upshift and downshift, the angle difference exists in the conversion among different gears, and the angle difference is accurately debugged through the motor control module.
2. The electric gear shifting mechanism suitable for the sequential gearbox engine according to claim 1, wherein the controller is an STM32C8T6F103 single-chip microcomputer.
3. The electric gear shifting mechanism suitable for the sequential gearbox engine according to claim 1, wherein the driving motor (1) is fixed on a shell of the speed reducer (3) through bolts, and an output end of the driving motor (1) is directly connected with an input end of the speed reducer (3) through a pair of gears.
4. An electric gearshift suitable for a sequential gearbox engine according to claim 1, characterised in that the rated drive voltage adopted by the drive motor (1) is dc 12V, the rotational speed is 240rpm, and the output torque of the output shaft (5) of the reducer is 5.4n·m.
5. The electric gear shifting mechanism suitable for the sequential gearbox engine according to claim 1, wherein the speed reducer (3) is composed of a plurality of groups of meshing gears, a shell of the speed reducer (3) is fixed on a speed reducer bracket (4) through bolts, and a reduction ratio of the speed reducer (3) is 1:96.
6. the electric gear shifting mechanism suitable for the sequential gearbox engine according to claim 1, wherein D-shaped holes (7) are formed in two ends of the coupler (8), D-shaped columns (6) in driving connection with the D-shaped holes (7) are arranged on both the output shaft (5) of the speed reducer and the gear shifting lever (10), and clamping bolts (9) used for fixing the relative positions of the D-shaped holes (7) and the D-shaped columns (6) are arranged at two ends of the coupler (8) in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280093.1A CN107415683B (en) | 2017-04-26 | 2017-04-26 | Electric gear shifting mechanism suitable for sequential gearbox engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280093.1A CN107415683B (en) | 2017-04-26 | 2017-04-26 | Electric gear shifting mechanism suitable for sequential gearbox engine |
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| Publication Number | Publication Date |
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| CN107415683A CN107415683A (en) | 2017-12-01 |
| CN107415683B true CN107415683B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710280093.1A Active CN107415683B (en) | 2017-04-26 | 2017-04-26 | Electric gear shifting mechanism suitable for sequential gearbox engine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268491A (en) * | 2018-11-29 | 2019-01-25 | 福建工程学院 | The gearshift and its working method of list type engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203939975U (en) * | 2014-05-28 | 2014-11-12 | 长城汽车股份有限公司 | A kind of shifting vehicle gearbox operating mechanism |
| CA2916866C (en) * | 2015-01-09 | 2020-02-18 | United Technologies Corporation | Geared turbofan engine with power density range |
| CN105065654B (en) * | 2015-07-15 | 2018-06-22 | 徐州南普机电科技有限公司 | A kind of electric vehicle two speed transmission |
| CN106051149A (en) * | 2016-07-26 | 2016-10-26 | 连云港北方变速器有限责任公司 | Transmission device |
| CN206826406U (en) * | 2017-04-26 | 2018-01-02 | 华南理工大学 | A kind of electric gear shifting mechanism suitable for list type gearbox engine |
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