Epicyclic gearing or planetary gearing is a gear system consisting of one or more outer, or planet, gears or pinions, revolving about a central sun gear or sun wheel. [4][5] Typically, the planet gears are mounted on a movable arm or carrier, which itself may rotate relative to the sun gear.

2022年3月15日 · Following are the main parts of a planetary gear set: In a planetary gearbox, the sun gear drives the surrounding planetary gears which are fixed to a carrier in order to avoid slipping during operation. As the sun gear is driven, the planetary gears rotate the ring gear (also known as outer gear).

2018年9月21日 · A planetary gear is an epicyclic gear in which several gears (planet gears) mesh with a central gear (sun gear). Stationary gearbox So-called stationary gearboxes are characterised by the fact that the gear wheels have stationary axes of rotation.

2021年5月10日 · Planetary gears are used in applications where space is limited, as they are typically smaller than other types of gearboxes. They also form the basis of the most common type of automatic...

2024年3月15日 · Multiple “driven” gears, or planets, orbiting the sun gear within a gearbox. These planets mesh with an internal ring gear, forming an internal spur gear design. Planetary gear systems find extensive use in a range of mechanical transmissions. For example they can be found in helicopters, wind turbines, vehicles, and mining machinery.

2023年5月1日 · What is a Planetary Gearbox? A planetary gearbox is an instrument with the output and input shafts aligned. A planetary gearbox is employed to transmit the greatest torque in the most compact form (introduced as the torque density).

2023年2月28日 · Planetary gears can supply high levels of torque and high-speed reduction. They are also relatively compact compared to standard pinion-and-gear reducers, thanks to their inherent in-line...

2019年11月29日 · Planetary gears are at the heart of modern engineering and are used in gearboxes that power everything from basic plant machinery to cutting-edge electric vehicles. The simple configuration of a central drive and orbiting gears was developed thousands of years ago to model the movements of the planets.

A planetary gearbox is a compact gearbox where the input shaft and output shaft are aligned. It is specifically designed to transfer the maximum amount of torque in a limited space, which is referred to as torque density.

2024年3月27日 · In many automatic car transmissions, several planetary gearboxes are arranged in series, whereby clutches can be used to influence which shaft is rigid and which shafts act as input and output. All desired gears of the car can be “generated” on this basis by shifting gears.