1. Acceleration and deceleration are commonly referred to as transmission gearbox.
2. Change the transmission direction. For example, we can use two sector gears to transmit the force vertically to the other rotating shaft.
3. Change the rotational torque. Under the same power condition, the faster the gear rotates, the smaller the torque on the shaft, and on the contrary, the greater.
4. Clutch function: we can separate the engine from the load by separating two originally engaged gears. For example, brake clutch, etc.
5. Distribute power. For example, we can use one engine to drive multiple slave shafts through the main shaft of the gearbox, thus realizing the function of one engine driving multiple loads.
