Do you know the role of the geared motor?
Acceleration and deceleration are often referred to as variable speed gearboxes. To change the transmission direction, for example, we can use two sector gears to vertically transmit the force to another rotating shaft. Change the rotational torque. Under the same power conditions, the faster the gear rotates, The smaller the torque on the shaft, the greater the vice versa. We can separate the engine from the load by separating the two originally meshed gears. For example, the brake clutch, etc.
Power distribution. For example, we can use one engine to drive multiple slave shafts through the main shaft of the gearbox, so as to realize the function of one engine driving multiple loads.