Drive axle assembly of vehicle

Abstract

The invention discloses a drive axle assembly of a vehicle. The drive axle assembly comprises a motor, a first gear, a second gear, a first shaft, a second shaft, a gearbox, a right shift fork, a right inner gear ring support, a right sun gear, a right inner planet gear, a right outer planet gear, a left shifting fork capable of moving between a third position and a fourth position, a left inner gear ring support, a left sun wheel coaxially rotating with the right inner gear ring support, a left planet gear synchronously rotating with the second shaft, a driving gear synchronously rotating withthe left planet gear through a left planet support, and a differential mechanism connected with the driving gear. The gearbox of the drive axle assembly is coaxially arranged through the double planet rows, the ground clearance of a vehicle can be increased, and when a gear in the drive axle assembly transmits torque, the gear does not have an idle gear, so that the oil stirring power loss of thegear is reduced, the transmission efficiency of the drive axle assembly is improved, and the working noise of the vehicle can also be reduced.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a drive axle assembly of a vehicle. Background technique [0002] In the related art, the structure of the drive axle assembly of the vehicle is complicated, and the finished product is expensive; When the car is running, a large torque will be generated on the bonding surface of the bridge assembly and the power assembly, and the bonding surface is prone to cracking or large strain, resulting in oil leakage. At the same time, the gear shifting method of the existing drive axle assembly is the gear shifting of the electro-hydraulic module, and the whole module has a complicated structure, is expensive, and the maintenance cost is high. When the drive axle assembly transmits torque, all gears are in working state, there is no idle gear, the service life of the gear is short and the noise of the whole assembly is relatively high. [0003] In addition, the height of some shafts and gear ce...

AI Technical Summary

Problems solved by technology

[0002] In the related art, the structure of the drive axle assembly of the vehicle is complicated, and the finished product is expensive; When the car is running, a large torque will be generated on the bonding surface of the bridge assembly and the power assembly, and the bonding surface is prone to cracking or large strain, resulting in oil leakage

At the same time, the gear shifting method of the existing drive axle components is electro-hydraulic module shifting, and the entire module structure is complicated, expensive, and maintenance costs are high

When the drive axle assembly transmits torque, each gear is in working condition, there is no idle gear, the service life of the gear is short and the noise of the whole assembly is relatively large

[0003] In addition, the height of some shafts and gear centers in the drive axle assembly is lower than the height of the differential. After the drive axle assembly is installed on the vehicle, the shafts and gears are completely immersed in gear oil. When the powertrain of the drive axle assembly When working, the gear on the shaft throws oil at high speed, which easily leads to relatively high oil temperature of the entire powertrain, which in turn leads to component failure

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