CN102678850A - Two-gear automatic gearbox for automobiles - Google Patents
Two-gear automatic gearbox for automobiles Download PDFInfo
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- CN102678850A CN102678850A CN2012101361455A CN201210136145A CN102678850A CN 102678850 A CN102678850 A CN 102678850A CN 2012101361455 A CN2012101361455 A CN 2012101361455A CN 201210136145 A CN201210136145 A CN 201210136145A CN 102678850 A CN102678850 A CN 102678850A
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Abstract
The invention relates to a gearbox, in particular to an automatic gearbox for automobiles. During the driving process of new energy automobiles, the automatic gearbox analyzes dynamic requirements of vehicles based on the operation intentions of drivers and operating conditions of the vehicles and by using fuzzy logic; and gear switch of the two-gear automatic gearbox is controlled through a control unit, so that a drive motor can constantly work near efficient points, and dual requirements of driving range and dynamic property can be met.
Description
Technical field
The present invention relates to a kind of speed changer, specifically be used for the automatic transmission of automobile.
Background technique
When Electric power car uses; For drive motor often is operated in about rotating speed 2000r/min, near the efficient operating point about torque 50Nm, just require the transmission deceleration system of vehicle must have the function of gear ratio; Make power assembly when vehicle starting and low speed driving, reduction speed ratio increases; When the speed of a motor vehicle of automobile reached the urban road speed of a motor vehicle of 30～60km/h, reduction speed ratio reduced.What mixed power, pure electric automobile motor driving power assembly adopted at present is the reducing gear of constant speed ratio; This mechanism just can not satisfy the high speed usage requirement simultaneously when satisfying the reduction speed ratio of starting and tick-over requirement design, otherwise; If the high speed requirement is satisfied in design; Motor is through the permanent torque work section of the poor efficiency of being everlasting when then using, and it is bigger than normal to consume energy, and the continual mileage of vehicle power is had a strong impact on.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention provides a kind of drive motor that makes can often be operated near two speed automatic transmissions that efficient point is, satisfy continual mileage and power character double requirements, and concrete technological scheme is:
Automobile two speed automatic transmissions; Comprise gearshift, rear case, power input shaft, front case, torsional vibration damper, differential mechanism, pto, P retaining device; The power input source of described automobile two speed automatic transmissions is dc brushless motors of automobile; Dc brushless motor connects the torsional vibration damper input end through external splines, and the output terminal of torsional vibration damper connects power input shaft through internal spline; Driving gear is installed on power input shaft, links together through driving gear and pto, pto links together with differential mechanism through double-reduction gear is secondary; The two ends of differential mechanism are clutch end, connect driving wheel; The P retaining device is installed in the pto end, is used for realizing parking braking; Gearshift is connected with power input shaft through synchronizer.
The gearshift of being told comprises torque limiter, screw, screw mandrel, shifting fork mechanism and position transducer, planet-gear speed reducer, driving torque delimiter; Planet-gear speed reducer is connected with torque limiter; Torque limiter connects screw; Screw matches with screw mandrel and converts rotatablely moving of torque limiter into straight line motion, and screw mandrel is fixedly connected through bayonet socket with shift fork, and shift fork is inserted in the synchromesh gear hub chute on the power input shaft; Position transducer is connected on the screw mandrel, feedback shifting fork mechanism position signal.
Described torsional vibration damper comprises output terminal and input end; Described output terminal comprises two vibration damping input outer tooth disks; Both are fixedly connected; Also have an output to connect chuck in the middle of the vibration damping input outer tooth disk, vibration damping input outer tooth disk is connected with output and all porosely on the corresponding position of chuck is used to install damping spring, and a two ends of output connection chuck are with the vibration damping nylon plate; Described input end comprises that input connects chuck, motor is imported flower keyboard, and both are fixedly connected, and the bore design that input connects chuck has the internal tooth that meshes with vibration damping output outer tooth disk.
The P retaining device is installed on the pto, comprises base plate, shift fork arm, straight pin and shotpin are installed, and straight pin comprises the cylindrical body that the two ends diameter is different; Straight pin one end is movably connected in shift fork arm top; The rotation of shift fork arm can drive straight pin and laterally move, and the cylindrical body position of straight pin contacts with shotpin one end face, and there is spring this end below; The spring the other end is connected to be installed on the base plate, and the shotpin the other end contacts with the pto face.
Automobile two speed automatic transmissions provided by the invention can use with supporting composition new-energy automobile power assembly such as the dc brushless motor of rated input power 5.5～20kW scope, specified input speed 1800～3500r/min scope, AC induction motor; This power assembly is installed on the automobile chassis; Be equipped with power-supply controller of electric and TCU controller, can realize the driving of going of vehicle.The present invention is in the new-energy automobile running process; According to driver's the operation intention and the running state of vehicle; Utilize fuzzy logic, parse the power character requirement of vehicle, the gear of controlling two speed automatic transmissions through control unit switches; Drive motor can often be operated near the efficient point, satisfy the double requirements of continual mileage and power character.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a gearshift structural representation of the present invention;
Fig. 3 is a gearshift partial structurtes schematic representation of the present invention;
Fig. 4 is a torsional vibration damper external structure schematic representation of the present invention;
Fig. 5 is a torsional vibration damper component assembling schematic representation of the present invention;
Fig. 6 is a P retaining structural representation of the present invention;
Fig. 7 is a P retaining structural principle schematic representation of the present invention.
Embodiment
The accompanying drawings specific embodiment of the invention; As shown in Figure 1; Automobile two speed automatic transmissions; Comprise gearshift 1, rear case 2, power input shaft 3, front case 4, torsional vibration damper 5, differential mechanism 8, pto 9, P retaining device 10; The power input source of described automobile two speed automatic transmissions is dc brushless motors 7 of automobile, and dc brushless motor 7 connects torsional vibration damper 5 input ends through external splines, and the output terminal of torsional vibration damper 5 connects power input shaft 3 through internal spline; On power input shaft 3, driving gear is installed, links together through driving gear and pto 9, pto 9 links together with differential mechanism 8 through double-reduction gear is secondary; The two ends of differential mechanism 8 are clutch end, connect driving wheel; The P retaining device is installed in pto 9 ends, is used for realizing parking braking; Gearshift 1 is connected with power input shaft 3 through synchronizer.
As shown in Figure 2, the gearshift of being told 1 comprises torque limiter 15, screw 14, screw mandrel 13, shifting fork mechanism 11 and position transducer 12, planet-gear speed reducer 16, driving torque delimiter 15, and planet-gear speed reducer 16 is connected with torque limiter 15; Torque limiter 15 connects screw 14; Screw 14 matches with screw mandrel 13 and converts rotatablely moving of torque limiter 15 into straight line motion, and is as shown in Figure 3, and screw mandrel 13 and shift fork 11 are fixedly connected through bayonet socket; The socket groove is arranged on the screw mandrel 13; The upper end of shift fork 11 is inserted in the socket groove, forms with screw mandrel 13 to connect, and shift fork 11 lower ends are inserted in synchromesh gear hub 31 chutes on the power input shaft 3; Position transducer 12 is connected on the screw mandrel 13, feedback shifting fork mechanism position signal.Planetary gear reducer 16 and the DC brushless motor 7 is connected, when the DC brushless motor 7 rotates, through these institutions transform the fork 11 toggle synchronizer gear shift operation to achieve grain.
Described torsional vibration damper 5 structures such as Fig. 4, shown in Figure 5; Two vibration damping input outer tooth disk 501,508 usefulness double end connecting pins 505 are riveted together; Middle tapping is installed 5 shock-absorbing springs 504; Output connects the centre that chuck 503 is placed on two vibration damping input outer tooth disks 501,508; Be connected with vibration damping input outer tooth disk 501,508 through 5 shock-absorbing springs 504, vibration damping input outer tooth disk 501,508 is connected chuck 503 with output axle, radial location realize with vibration damping nylon plate 502,506, form the output linkage unit; Input connects chuck 509,5 flathead rivets 507 of motor input flower keyboard 510 usefulness are riveted together to form input unit, and the bore design of input connection chuck 509 has the internal tooth with the engagement of vibration damping output outer tooth disk.During work; Power input to a machine is passed to input through motor input flower keyboard 510 and is connected chuck 509; Import connection chuck 509 and pass to vibration damping input outer tooth disk 501,508, vibration damping input outer tooth disk 501,508 is passed to 504,5 shock-absorbing springs 504 of 5 shock-absorbing springs and is passed to output connection chuck 503 to input power again; Output connects chuck 503 and is connected with transmission input shaft through spline, realizes the power transmission.Owing to be to be connected between input unit and the output unit through what shock-absorbing spring was realized, therefore, can the effective isolation driveline torque change the vibration that causes, realize torsion damping.
This invention also is designed with P retaining device 10, and is as shown in Figure 6, and P retaining device 10 is installed on the pto 9; Comprise base plate 1001, shift fork arm 1002, straight pin 1003 and shotpin 1004 are installed; Straight pin 1003 comprises the cylindrical body that the two ends diameter is different, and straight pin 1,003 one ends are movably connected in shift fork arm 1002 tops, and 1002 rotations of shift fork arm can drive straight pin 1003 and laterally move; The cylindrical body position of straight pin 1003 contacts with shotpin 1,004 one end faces; This end below has spring, the spring the other end to be connected on the installation base plate 1001, and shotpin 1004 the other ends contact with 9 of ptos.
Like Fig. 6 and shown in Figure 7; Rotation shift fork arm 1002 drives straight pin 1003 motions; Travel forward when shift fork arm 1002 counterclockwise rotates drive straight pin 1003, when this moment, shotpin 1,004 one ends contacted with the little cylindrical body of straight pin 1003 diameters, the other end was away from base plate 1001 directions are installed; Contact locking power output shaft 9 with pto 9 surface of contact; When rotating drive straight pin 1003, shift fork arm 1002 clockwise directions move backward; When this moment, shotpin 1,004 one ends contacted with the big cylindrical body of straight pin 1003 diameters; The other end under spring action near base plate 1001 directions are installed; Unclamp with pto 9 surface of contact, discharge pto 9.
After adopting MATLAB software that automobile two speed automatic transmissions provided by the invention have been carried out the computational analysis of power coupling, conclusion is following:
Equipment N=7.5kW AC motor new-energy automobile driving force---the running resistance calculated curve can get: adopting 3.765 speed ratios is bottom gear; 7.5kW the driving force of motor can guarantee that vehicle has enough priming speeds and accelerating ability, adopting 1.531 speed ratios is that top gear can make electric vehicle in motor rated power drives scope area, obtain the travelling speed of 78.97km/h.
After adopting gear ratio; 7.5kW the driving force of motor can guarantee that vehicle has enough accelerating abilities; When the power of using drive motor be rated power 150% the time; Can make the acceleration of vehicle reach 2.24m/s2, conversion is to be about 10s 0～80km/h time for acceleration, can satisfy the manipulation request of new-energy automobile fully.
After adopting gear ratio, the driving force of 7.5kW motor can guarantee that vehicle has enough climbable gradients, when the power of using drive motor is electric motor car rated power 150%, can make the climbable gradient of vehicle reach 0.26, is equivalent to the ramp about 14.57 °.
Claims (4)
1. automobile two speed automatic transmissions; Comprise gearshift (1), rear case (2), power input shaft (3), front case (4), reverse (5), differential mechanism (8), pto (9), P retaining device (10); The power input source of described automobile two speed automatic transmissions is dc brushless motors (7) of automobile; Dc brushless motor (7) connects torsional vibration damper (5) input end through external splines, and the output terminal of torsional vibration damper (5) connects power input shaft (3) through internal spline; On power input shaft (3), driving gear is installed, links together through driving gear and pto (9), pto (9) links together with differential mechanism (8) through double-reduction gear is secondary; The two ends of differential mechanism (8) are clutch end, connect driving wheel; P retaining device (10) is installed in pto (9) end, is used for realizing parking braking; Gearshift (1) is connected with power input shaft (3) through synchronizer.
2. automobile two speed automatic transmissions according to claim 1; It is characterized in that; The gearshift of being told (1) comprises torque limiter (15), screw (14), screw mandrel (13), shifting fork mechanism (11) and position transducer (12), planet-gear speed reducer (16), driving torque delimiter (15); Planet-gear speed reducer (16) is connected with torque limiter (15), and torque limiter (15) connects screw (14), and screw (14) matches with screw mandrel (13) and converts rotatablely moving of torque limiter (15) into straight line motion; Screw mandrel (13) is fixedly connected through bayonet socket with shift fork (11); Shift fork (11) is inserted in the synchromesh gear hub chute on the power input shaft (3), and position transducer (12) is connected on the screw mandrel (13), feedback shifting fork mechanism position signal.
3. automobile two speed automatic transmissions according to claim 1; It is characterized in that; Described torsional vibration damper (5) comprises output terminal and input end; Described output terminal comprises two vibration damping input outer tooth disks (501,508), and both are fixedly connected, and also has an output to connect chuck (503) in the middle of the vibration damping input outer tooth disk (501,508); Vibration damping input outer tooth disk (501,508) is connected with output and all porosely on the corresponding position of chuck (503) is used to install damping spring (504), and a two ends of output connection chuck (503) are with vibration damping nylon plate (502,506); Described input end comprises that input connects chuck (509), motor is imported flower keyboard (510), and both are fixedly connected, and the bore design that input connects chuck (509) has the internal tooth that meshes with vibration damping output outer tooth disk.
4. automobile two speed automatic transmissions according to claim 1; It is characterized in that; Described P retaining device (10) is installed on the pto (9), comprises base plate (1001), shift fork arm (1002), straight pin (1003) and shotpin (1004) are installed, and straight pin (1003) comprises the cylindrical body that the two ends diameter is different; Straight pin (1003) one ends are movably connected in shift fork arm (1002) top; Shift fork arm (1002) rotation can drive straight pin (1003) and laterally move, and the cylindrical body position of straight pin (1003) contacts with shotpin (1004) one end faces, and there is spring this end below; The spring the other end is connected to be installed on the base plate (1001), and shotpin (1004) the other end contacts with pto (9) face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210136145.5A CN102678850B (en) | 2012-05-04 | 2012-05-04 | Two-gear automatic gearbox for automobiles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210136145.5A CN102678850B (en) | 2012-05-04 | 2012-05-04 | Two-gear automatic gearbox for automobiles |
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| CN102678850A true CN102678850A (en) | 2012-09-19 |
| CN102678850B CN102678850B (en) | 2015-03-18 |
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| CN201210136145.5A Expired - Fee Related CN102678850B (en) | 2012-05-04 | 2012-05-04 | Two-gear automatic gearbox for automobiles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN103821897A (en) * | 2014-03-14 | 2014-05-28 | 上海交通大学 | Single row planetary gear train two-gear automatic mechanical transmission for electrocar |
| CN104660116A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless direct-current motor for low speed and high power of automobile gearshift |
| CN104660000A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Low-speed high-power automobile gear selection device with brushless DC motor |
| CN104660117A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless direct-current motor for low speed and high power of automobile clutch |
| CN104653302A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless DC (direct current) motor for large-torque precise self-locking of automobile throttle |
| CN105090474A (en) * | 2015-09-06 | 2015-11-25 | 重庆钟华机械有限责任公司 | Gear shifting guide shaft assembly of two-gear automatic transmission |
| CN106678360A (en) * | 2015-11-11 | 2017-05-17 | 上海汽车集团股份有限公司 | Car, gearbox of car and motor gear-shifting system and unit |
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Patent Citations (6)
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| US6193037B1 (en) * | 1997-08-11 | 2001-02-27 | Luk Getreibe-Systeme Gmbh | Hydrodynamic torque converter |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN104660116A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless direct-current motor for low speed and high power of automobile gearshift |
| CN104660000A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Low-speed high-power automobile gear selection device with brushless DC motor |
| CN104660117A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless direct-current motor for low speed and high power of automobile clutch |
| CN104653302A (en) * | 2013-11-25 | 2015-05-27 | 陕西国力信息技术有限公司 | Brushless DC (direct current) motor for large-torque precise self-locking of automobile throttle |
| CN103821897A (en) * | 2014-03-14 | 2014-05-28 | 上海交通大学 | Single row planetary gear train two-gear automatic mechanical transmission for electrocar |
| CN103821897B (en) * | 2014-03-14 | 2016-08-03 | 上海交通大学 | Electric motor car two grades of automatic speed changer for machine of single planet circular system |
| CN105090474A (en) * | 2015-09-06 | 2015-11-25 | 重庆钟华机械有限责任公司 | Gear shifting guide shaft assembly of two-gear automatic transmission |
| CN106678360A (en) * | 2015-11-11 | 2017-05-17 | 上海汽车集团股份有限公司 | Car, gearbox of car and motor gear-shifting system and unit |
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| CN102678850B (en) | 2015-03-18 |
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