CN102678850B - Two-gear automatic gearbox for automobiles - Google Patents
Two-gear automatic gearbox for automobiles Download PDFInfo
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- CN102678850B CN102678850B CN201210136145.5A CN201210136145A CN102678850B CN 102678850 B CN102678850 B CN 102678850B CN 201210136145 A CN201210136145 A CN 201210136145A CN 102678850 B CN102678850 B CN 102678850B
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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 for the automatic transmission of automobile.
Background technique
When Electric power car uses, for making drive motor often be operated in rotating speed about 2000r/min, near the efficient operating point of torque about 50Nm, just require that the gear reduction 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 reaches the urban road speed of a motor vehicle of 30 ~ 60km/h, reduction speed ratio reduces.What current mixed power, pure electric automobile motor drove power assembly to adopt is the reducing gear of constant-speed ratio, this mechanism is when satisfied starting and tick-over require the reduction speed ratio designed, just can not meet high speed usage requirement simultaneously, otherwise, if design meets high-speed demand, when then using, motor is through the permanent torque work section of poor efficiency of being everlasting, and consumes energy bigger than normal, 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 invention provides and a kind ofly enable drive motor often be operated near high-efficiency point, meet two speed automatic transmissions of continual mileage and power character double requirements, concrete technological scheme is:
Automobile two speed automatic transmission, comprise gearshift, rear case, power input shaft, front case, torsional vibration damper, differential mechanism, pto＝power take-off, P retaining device, the power input source of described automobile two speed automatic transmission is the DC brushless motor of automobile, DC brushless motor connects torsional vibration damper input end by external splines, and the output terminal of torsional vibration damper connects power input shaft by internal spline; Power input shaft is provided with driving gear, is linked together by driving gear and pto＝power take-off, pto＝power take-off links together with differential mechanism through double-reduction gear pair; The two ends of differential mechanism are clutch end, connect and drive wheel; P retaining device is arranged on Power output shaft end, is used for realizing parking braking; Gearshift is connected with power input shaft by synchronizer.
Described gearshift comprises torque limiter, screw, screw mandrel, shifting fork mechanism and position transducer, planet-gear speed reducer, planet-gear speed reducer is connected with torque limiter, torque limiter connects screw, screw matches with screw mandrel and the rotary motion of torque limiter is converted to straight line motion, screw mandrel is fixedly connected with by bayonet socket with shift fork, shift fork is inserted in the synchromesh gear hub chute on power input shaft, and position transducer is connected on 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 with, one is also had to export connecting chuck in the middle of vibration damping input outer tooth disk, all porose for installing damping spring on the position that vibration damping input outer tooth disk is corresponding with exporting connecting chuck, the axle two ends cover exporting connecting chuck has vibration damping nylon plate; Described input end comprises input connecting chuck, motor input flower keyboard, and both are fixedly connected with, and the bore design of input connecting chuck has the internal tooth exporting outer tooth disk with vibration damping and engage.
P retaining device is arranged on pto＝power take-off, comprise mounting base, shift fork arm, straight pin and shotpin, straight pin comprises the different cylindrical body of two ends diameter, straight pin one end is movably connected in shift fork arm top, shift fork arm rotates and straight pin can be driven to laterally move, and the cylindrical body position of straight pin and shotpin one end contact, have spring below this end, the spring the other end is connected on mounting base, and the shotpin the other end contacts with Power output axial plane.
Automobile two speed automatic transmission provided by the invention can use with the supporting composition new-energy automobile power assembly such as DC brushless motor, AC induction motor of rated input power 5.5 ~ 20kW scope, specified input speed 1800 ~ 3500r/min scope, this power assembly is arranged on automobile chassis, be equipped with power-supply controller of electric and TCU controller, the traveling that can realize vehicle drives.The present invention is in new-energy automobile running process, according to the operation intention of driver and the running state of vehicle, utilize fuzzy logic, parse the power character requirement of vehicle, the gear being controlled two speed automatic transmissions by control unit is switched, drive motor is often operated near high-efficiency point, meets the double requirements of continual mileage and power character.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is gearshift structural representation of the present invention;
Fig. 3 is gearshift partial structurtes schematic diagram of the present invention;
Fig. 4 is torsional vibration damper external structure schematic diagram of the present invention;
Fig. 5 is torsional vibration damper component of the present invention assembling schematic diagram;
Fig. 6 is that P of the present invention keeps off structural representation;
Fig. 7 is that P of the present invention keeps off structural principle schematic diagram.
Embodiment
The accompanying drawings specific embodiment of the invention, as shown in Figure 1, automobile two speed automatic transmission, comprise gearshift 1, rear case 2, power input shaft 3, front case 4, torsional vibration damper 5, differential mechanism 8, pto＝power take-off 9, P retaining device 10, the power input source of described automobile two speed automatic transmission is the DC brushless motor 7 of automobile, DC brushless motor 7 connects torsional vibration damper 5 input end by external splines, and the output terminal of torsional vibration damper 5 connects power input shaft 3 by internal spline; Power input shaft 3 is provided with driving gear, is linked together by driving gear and pto＝power take-off 9, pto＝power take-off 9 links together with differential mechanism 8 through double-reduction gear pair; The two ends of differential mechanism 8 are clutch end, connect and drive wheel; P retaining device is arranged on pto＝power take-off 9 end, is used for realizing parking braking; Gearshift 1 is connected with power input shaft 3 by synchronizer.
As shown in Figure 2, described gearshift 1 comprises torque limiter 15, screw 14, screw mandrel 13, shifting fork mechanism 11 and position transducer 12, planet-gear speed reducer 16, 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 the rotary motion of torque limiter 15 is converted to straight line motion, as shown in Figure 3, screw mandrel 13 is fixedly connected with by bayonet socket with shift fork 11, screw mandrel 13 there is socket groove, the upper end of shift fork 11 is inserted in socket groove, formed with screw mandrel 13 and connect, shift fork 11 lower end is inserted in synchromesh gear hub 31 chute on power input shaft 3, position transducer 12 is connected on screw mandrel 13, feedback shifting fork mechanism position signal.Planet-gear speed reducer 16 is connected with DC brushless motor 7, when DC brushless motor 7 rotates, is converted by said mechanism, makes shift fork 11 stir Tong Bu Qi Chi Grains and realizes gear shift operation.
Described torsional vibration damper 5 structure is as Fig. 4, shown in Fig. 5, two vibration damping input outer tooth disks 501, 508 are riveted together with double end connecting pin 505, middle tapping installs 5 shock-absorbing springs 504, export connecting chuck 503 and be placed on two vibration damping input outer tooth disks 501, the centre of 508, outer tooth disk 501 is inputted by 5 shock-absorbing springs 504 and vibration damping, 508 connect, vibration damping input outer tooth disk 501, 508 with export the axle of connecting chuck 503, radial location vibration damping nylon plate 502, 506 realize, composition exports linkage unit, input connecting chuck 509, motor input flower keyboard 510 5 flathead rivets 507 are riveted together to form input unit, the bore design of input connecting chuck 509 has the internal tooth exporting outer tooth disk with vibration damping and engage.During work, power input to a machine passes to input connecting chuck 509 by motor input flower keyboard 510, input connecting chuck 509 passes to vibration damping input outer tooth disk 501,508, vibration damping input outer tooth disk 501,508 passes to 5 shock-absorbing springs 504,5 shock-absorbing springs 504 are passed to input power and are exported connecting chuck 503, export connecting chuck 503 to be connected with transmission input shaft by spline, realize power transimission.Owing between input unit and output unit being the connection realized by shock-absorbing spring, therefore, effectively can isolate driveline torque and change the vibration caused, realize torsion damping.
This invention is also designed with P retaining device 10, as shown in Figure 6, P retaining device 10 is arranged on pto＝power take-off 9, comprise mounting base 1001, shift fork arm 1002, straight pin 1003 and shotpin 1004, straight pin 1003 comprises the different cylindrical body of two ends diameter, straight pin 1003 one end is movably connected in shift fork arm 1002 top, shift fork arm 1002 rotates and straight pin 1003 can be driven to laterally move, the cylindrical body position of straight pin 1003 and shotpin 1,004 one end contact, spring is had below this end, the spring the other end is connected on mounting base 1001, shotpin 1004 the other end contacts with pto＝power take-off 9.
As shown in Figure 6 and Figure 7, rotating shift fork arm 1002 drives straight pin 1003 to move, straight pin 1003 is driven to travel forward when shift fork arm 1002 counterclockwise rotates, when the cylindrical body that now shotpin 1004 one end is little with straight pin 1003 diameter contacts, the other end is away from mounting base 1001 direction, contact with pto＝power take-off 9 surface of contact, locking power output shaft 9; Straight pin 1003 is driven to move backward when shift fork arm 1002 clockwise direction rotates, when the cylindrical body that now shotpin 1004 one end is large with straight pin 1003 diameter contacts, the other end is under the action of the spring near mounting base 1001 direction, unclamp with pto＝power take-off 9 surface of contact, release pto＝power take-off 9.
After adopting MATLAB software to carry out power matching computational analysis to automobile two speed automatic transmission provided by the invention, conclusion is as follows:
Equipment N=7.5kW AC motor new-energy automobile driving force---running resistance calculated curve can obtain: adopt 3.765 speed ratios to be bottom gear, the driving force of 7.5kW motor can ensure that vehicle has enough priming speeds and accelerating ability, adopts 1.531 speed ratios to be that top gear can make electric vehicle drive at motor rated power the travelling speed obtaining 78.97km/h in range areas.
After adopting gear ratio, the driving force of 7.5kW motor can ensure that vehicle has enough accelerating abilities, when the power applying drive motor is 150% of rated power, the acceleration of vehicle can be made to reach 2.24m/s2, conversion is 0 ~ 80km/h time for acceleration is about 10s, can meet the manipulation request of new-energy automobile completely.
After adopting gear ratio, the driving force of 7.5kW motor can ensure that vehicle has enough climbable gradients, when the power applying drive motor is electric motor car rated power 150%, the climbable gradient of vehicle can be made to reach 0.26, be equivalent to the ramp of about 14.57 °.
Claims (3)
1. automobile two speed automatic transmission, it is characterized in that, comprise gearshift (1), rear case (2), power input shaft (3), front case (4), torsional vibration damper (5), differential mechanism (8), pto＝power take-off (9), P retaining device (10), the power input source of described automobile two speed automatic transmission is the DC brushless motor (7) of automobile, DC brushless motor (7) connects torsional vibration damper (5) input end by external splines, and the output terminal of torsional vibration damper (5) connects power input shaft (3) by internal spline; Power input shaft (3) is provided with driving gear, is linked together by driving gear and pto＝power take-off (9), pto＝power take-off (9) links together with differential mechanism (8) through double-reduction gear pair; The two ends of differential mechanism (8) are clutch end, connect and drive wheel; P retaining device (10) is arranged on pto＝power take-off (9) end, is used for realizing parking braking; Gearshift (1) is connected with power input shaft (3) by synchronizer;
Described gearshift (1) comprises torque limiter (15), screw (14), screw mandrel (13), shift fork (11) and position transducer (12), planet-gear speed reducer (16), 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 the rotary motion of torque limiter (15) is converted to straight line motion, screw mandrel (13) is fixedly connected with by bayonet socket with shift fork (11), shift fork (11) is inserted in the synchromesh gear hub chute on power input shaft (3), position transducer (12) is connected on screw mandrel (13), feedback shifting fork mechanism position signal.
2. automobile two speed automatic transmission 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), both are fixedly connected with, vibration damping input outer tooth disk (501, 508) one is also had to export connecting chuck (503) in the middle of, vibration damping input outer tooth disk (501, 508) and export on position corresponding to connecting chuck (503) all porose for installing damping spring (504), the axle two ends cover exporting connecting chuck (503) has vibration damping nylon plate (502, 506), described input end comprises input connecting chuck (509), motor input flower keyboard (510), and both are fixedly connected with, and the bore design of input connecting chuck (509) has the internal tooth inputting outer tooth disk with vibration damping and engage.
3. automobile two speed automatic transmission according to claim 1, it is characterized in that, described P retaining device (10) is arranged on pto＝power take-off (9), comprise mounting base (1001), shift fork arm (1002), straight pin (1003) and shotpin (1004), straight pin (1003) comprises the different cylindrical body of two ends diameter, straight pin (1003) one end is movably connected in shift fork arm (1002) top, shift fork arm (1002) rotates and straight pin (1003) can be driven to laterally move, the cylindrical body position of straight pin (1003) and shotpin (1004) end contact, spring is had below this end, the spring the other end is connected on mounting base (1001), shotpin (1004) the other end contacts with pto＝power take-off (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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| Publication Number | Publication Date |
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| CN102678850A CN102678850A (en) | 2012-09-19 |
| CN102678850B true 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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Families Citing this family (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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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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| US6193037B1 (en) * | 1997-08-11 | 2001-02-27 | Luk Getreibe-Systeme Gmbh | Hydrodynamic torque converter |
| US20010029219A1 (en) * | 2000-04-06 | 2001-10-11 | Sumitomo Heavy Industries, Ltd | Belt-type door opening and closing drive apparatus |
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| CN201980080U (en) * | 2011-01-27 | 2011-09-21 | 长城汽车股份有限公司 | Electric vehicle motive power assembly |
| CN201992007U (en) * | 2011-04-14 | 2011-09-28 | 天津阿尔特汽车技术有限公司 | Two-gear automatic transmission of electric vehicle |
| CN202883900U (en) * | 2012-05-04 | 2013-04-17 | 安玉森 | Automobile two-gear automatic gearbox |
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2012
- 2012-05-04 CN CN201210136145.5A patent/CN102678850B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193037B1 (en) * | 1997-08-11 | 2001-02-27 | Luk Getreibe-Systeme Gmbh | Hydrodynamic torque converter |
| US20010029219A1 (en) * | 2000-04-06 | 2001-10-11 | Sumitomo Heavy Industries, Ltd | Belt-type door opening and closing drive apparatus |
| CN201851643U (en) * | 2010-10-28 | 2011-06-01 | 长城汽车股份有限公司 | Gear shifting device of two-gear manual transmission case of vehicle |
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| CN202883900U (en) * | 2012-05-04 | 2013-04-17 | 安玉森 | Automobile two-gear automatic gearbox |
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| CN102678850A (en) | 2012-09-19 |
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Free format text: FORMER OWNER: ZHU HONGBIN Effective date: 20150424 Owner name: WUXI JINTIAN YUANFENG SCIENCE + TECHNOLOGY CO., LT Free format text: FORMER OWNER: AN YUSEN Effective date: 20150424 |
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Effective date of registration: 20150424 Address after: 214028 Jiangsu New District of Wuxi, Singapore Industrial Park, Tin Hing Road No. 5 Patentee after: Wuxi Jintian Yuanfeng Sci.&Tech. Inc., Ltd. Address before: 501 room 30, Xinzhou garden, New District, Jiangsu, Wuxi 214000, China Patentee before: An Yusen Patentee before: Zhu Hongbin |
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Granted publication date: 20150318 Termination date: 20190504 |