A kind of power assembly for two-shift motor vehicle
The present invention is suitable for a kind of power assembly for two-shift motor vehicle of electrocar, the driving of electronic passenger and freight car.
Vehicle technology has obtained certain development as green energy resource, general battery-driven car all is to adopt directly to drive or permanent transmitting ratio, realizes vehicular drive by electric machine speed regulation, like this can be higher to the demanded power output of motor; And very flexible is not easy to assembling and maintenance.Thereby, adopt the mechanical type gear shift can reduce the rating horsepower that uses motor.
Summary of the invention
The objective of the invention is to solve above-mentioned existing existing problem, provide a kind of alerting ability good, be easy to a kind of power assembly for two-shift motor vehicle that assembles and keep in repair.
The present invention is achieved in that the front end cover of drive motor and mission case adopts bolted connection, the front end cover of mission case, rear side housing adopt bolted connection to constitute mission case, by the bearing installation input shaft, the output shaft of drive motor is connected with the input shaft of change-speed box; Low-speed active gear, high speed driving gear are installed on the input shaft,, are gone up for two mileage output driving gear, high speed driven gear, synchro, low speed driven gear, main deceleration driving gear are installed by two of bearing installations; Synchro is installed selector fork by declutch shift shaft, and selector fork connects driving lever, and driving lever connects the gearshift spanner by shift lever axis; By the bearing installation differential assembly, with fast universal-joint; Differential assembly comprises that differential carrier, planetary wheel, axle side gear connect and compose; Main deceleration driven gear is installed on the differential assembly; Mileage output driven gear is installed in the axis hole of rear side housing by wheel shaft, and exports the driving gear engaged transmission with mileage.
The invention has the advantages that drive motor and two gear change-speed boxs link into an integrated entity, and have formed a modular dynamic assembly, this modular dynamic assembly is easy to assembling and maintenance.The change-speed box of this dynamic assembly is the speed-changing mechanism of two work gears, i.e. low gear, high gear.Vehicle uses the low gear operation when heavy duty is climbed, when the mild road traveling of underloading, adopt the high speed gear operation.Speed-changing mechanism adopts synchro to realize on second, engages with low speed or high speed driven gear respectively by synchro and realizes low speed and high-speed cruising.Compact conformation, flexible operation, convenience.Can reduce the rating horsepower that uses motor.
Description of drawings:
Fig. 1 structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the A place partial enlarged drawing of Fig. 1;
Fig. 4 is the power transmission arrangment scheme drawing of change-speed box;
Fig. 5 two gear switch actuating unit scheme drawings;
The specific embodiment
Describe in detail below in conjunction with accompanying drawing: as Fig. 1, shown in Figure 2, drive motor 1 adopts the flange connection assembling with the front end cover 3 of mission case, the seam boss that is drive motor end cap 2 inserts in the seam groove of change-speed box end cap 3, circumference uniform distribution bolt 21 connects. this mounting structure simple and fast, improved the right alignment of motor output shaft and change speed gear box input shaft assembling effectively. the front end cover 3 of mission case, rear side housing 16 adopts bolted connection to constitute mission case, by bearing installation input shaft 5, in the output shaft 4 and the input shaft 5 of drive motor 1 adopts respectively, male splines connection carrying out transfer torque. low-speed active gear 6 is installed on the input shaft 5, high speed driving gear 10; By mileage output driving gear 17, high speed driven gear 11, synchro 9, low speed driven gear 7 main deceleration driving gears 12 are installed on two 28, two 28 of the bearing installations; Synchro 9 is installed selector fork 8 by declutch shift shaft 26, and selector fork 8 connects driving lever 25, and driving lever 25 connects gearshift spanner 20 by shift lever axis 27; By bearing installation differential assembly 14, with fast universal-joint 15; Differential assembly 14 comprises that differential carrier 22, planetary wheel 23, axle side gear 24 connect and compose; Main deceleration driven gear 13 is installed on the differential assembly 14; Mileage output driven gear 18 is installed in the axis hole of rear side housing 16 by wheel shaft, and exports driving gear 17 engaged transmission with mileage, for mileage meter provides output; End face at rear side housing 16 is installed seal cover cap 19.
Two gear switch actuating units: driving lever 25 is rotated around shift lever axis 27 by gearshift spanner 20, driving lever 25 is stirred shift fork 8 along declutch shift shaft 26 axial translations, shift fork 8 drives synchro 9 sliding hubs and engages with low speed driven gear 7 and high speed driven gear 11 respectively, realizes low speed and high speed variable-speed operation.
As Fig. 3, the power transmission line of this dynamic assembly can be divided into by low high speed gear:
1. low gear drive path: from drive motor main shaft 4 to input shaft 5, low-speed active gear 6 and low gear driven gear 7 engaged transmission, synchro 9 and main deceleration driving gear 12 transmissions, main deceleration driving gear 12 and main deceleration driven gear 13 engaged transmission pass through planetary wheel 23, axle side gear 24 again, export with fast universal-joint 15.
2. high speed gear drive path: drive motor main shaft 4 is to input shaft 5, high speed driving gear 10 and high speed gear driven gear 11 engaged transmission, synchro 9 engages with high speed gear driven gear 11 and main deceleration driving gear 12 engaged transmission, main deceleration driving gear 12 and main deceleration driven gear 13 engaged transmission pass through planetary wheel 23, axle side gear 24 again, export with fast universal-joint 15.