Truck wheel side deceleration axle

There are gears in the drive axle to slow down the power transmitted by the drive shaft and increase the torque (reduce the speed and increase the torque). Single-stage reduction bridge means that only the bevel gear main reducer (the gear group in the middle axle housing of the driving axle) slows down, and two-stage reduction bridge means that besides the bevel gear main reducer, there are planetary gear wheel side reducers at the wheel installation position at the end of the half axle to further slow down and increase the torque.

Deceleration bridge can be understood as a fixed transmission device, and the transmission ratio is the ratio of deceleration and torque increase.

The disadvantages of single-stage reduction ratio axle are: 1, unable to achieve large reduction ratio or axle housing easily damaged by engine torque; Can't make a big reduction ratio, and the climbing degree is low;

2. In order to achieve a large reduction ratio, the size of the main reducer axle housing is large, resulting in a small ground clearance and poor passability;

The advantages of single-stage reduction bridge are: 1, no wheel side reducer, so the weight and cost are reduced;

2. There is no wheel reducer, so the transmission efficiency is improved and the fuel consumption is low.

On the contrary

The disadvantages of the two-stage reduction bridge are: 1, which increases the weight and cost because of the wheel reducer;

2, there is a wheel reducer, so the transmission efficiency is reduced and the fuel consumption is high;

The advantages of two-stage reduction ratio axle are: 1, which can realize large reduction ratio and the axle housing is not easily damaged by engine torque; Can realize large reduction ratio and high climbing degree;

2. The main reducer axle housing has small size, large ground clearance and good passability;

Construction vehicles, including dump trucks, generally need large climbing degree and passability under bad working conditions, so two-stage deceleration bridges are generally preferred; However, highway vehicles need high speed, low fuel consumption and low self-weight, so single-stage deceleration bridge is generally preferred.