Drive axle generally consists of main reducer, differential mechanism, wheel drive device and drive axle housing. Its effect is to fold the power transmitted by universal transmission device by 90°, change the direction of power transmission and reduce rational speed through main reducer. After the torque has been increased, the power is assigned to left and right half axle, as well as drive wheel via differential mechanism.
Reduction ratio of select main reducer should be able to ensure the vehicle has the best power and fuel economy.
The dimension should be smaller and necessary clearance should be ensured. It mainly means that to the size of dental packet should be as small as possible.
Gears and other transmission parts can be stably operated with little noise.
There is high transmission efficiency under various rational speeds and loads.
Under the condition of ensuring sufficient strength and rigidity, less mass should be ensured, especially unsprung mass, in order to improve vehicle stability.
Coordinate with movement of suspension guiding mechanism. For steering drive axle, it should coordinate with movement of steering mechanism.
Simple structure, good processing property, easy to manufacture, convenience for assembly, disassembly and adjustment.
Engine torque is transmitted by the universal transmission device to the drive wheel through main reducer, differential mechanism and half axle to achieve deceleration and increase torque;
Transmission direction of torque is changed through bevel gear of main reducer;
Differential action on the wheels on both sides is realized through differential mechanism to ensure that wheels on the inner and outer sides to steer at different speeds.