空
空

Planetary gear

变速箱8.jpg
Planetary gears, also known as planetary gear sets, are a complex and sophisticated component in automotive transmission systems. They consist of four core components: the sun gear, multiple planet gears, the ring gear, and the planet carrier. This unique structure allows planetary gears not only to achieve the 'self-rotation' effect of traditional fixed-axis gears but also to perform 'revolution' as the planet carrier orbits around the sun gear or other gears. This operating principle is similar to the movement of planets in the solar system, hence the name planetary gear set. Due to their characteristics such as power distribution, high load capacity, and large transmission ratios, planetary gears are widely used in automotive transmissions, hybrid systems, and the new energy sector.

Product advantages

  • Efficient transmission: The power distribution characteristics of planetary gears make power transmission more efficient. In hybrid systems, such as Toyota'sTHShybrid system, the planetary gear set acts as a 'power distributor', efficiently distributing and regulating the torque between the engine and the motor, achieving optimal utilization of power.
  • High load and large transmission ratio: The input and output shafts of the planetary gear are on the same horizontal line, and multiple planetary gears share the transmission load, providing advantages of high load and large transmission ratio. This characteristic makes planetary gears very suitable for applications requiring high torque density and heavy loads, such as aircraft and heavy machinery.
  • Compact structure and strong versatility: The compact structure, small size, and light weight of planetary gears make them easy to integrate into various mechanical systems. At the same time, their rich transmission combinations and characteristic selections can adapt to different working conditions and needs.
  • Long lifespan and low wear: Planetary gears do not require gear slippage during shifting, as all gears are always engaged with each other, reducing wear and impact, thereby extending service life.