Input torque is sent to the ring gear and then to carrier. The carrier gear is connected to both the side gears by the planet gear. The planet gear revolves driving the side gears.
Torque to the Propeller shaft is supplied by transmission line. A bevel gear takes drive from propeller shaft, and is encased within the housing. This meshes with ring gear, also called crown wheel. If the left side gear encounters resistance, the planet gear spins as well as revolving, allowing the left side gear to slow down.
Planetary Gear Systems
Figure 2.8 shows the basic layout of the planetary gear system. This consists of four elements as follows,
- Sun Gear – it is located at the center. Input shaft is connected to sun gear.
- Planet Gear – Planet gears are engaged with sun as a pinion in the system and they revolve around the sun gear.
- Ring Gear – Ring gear is the boundary of an envelope defined for the packaging of the sun and the planetary gear
- Arm – Shaft of sun gears and planet gears are connected internally with arms
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