Could everyone help answer questions regarding planetary gearboxes?
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Dear marine friends, does anyone have any information on planetary gearboxes? I searched online and found that planetary gearboxes are used for reducing speed, with little use in increasing it. I’m not sure what the difference is between using them for speed reduction and speed increase
Is it necessary to increase the speed? Why not just use a motor with a high rotational speed directly? The motor’s inherent high speed. You’re trying to catch fish in the trees; you’re taking a detour. It’s just my personal opinion. The purpose of reducing speed is always to meet high torque requirements; there is no such thing as reducing speed for its own sake. For purely low speeds, use a small motor with a belt.
The motor’s maximum speed is only 3000 revolutions per minute; doesn’t it need to be sped up when driving a compressor? The compressor requires 14,000 revolutions.
Yeah! It uses a planetary gearbox; I just want to know about the structure of a planetary gearbox!
3000 to 14000 – a planetary gearbox isn’t necessary, as the transmission ratio would be too high. 14/3, with a gear ratio of less than 5, two stages of helical gears are sufficient for speed increase; if the power is high, herringbone gears should be used. If speed control is required, a fluid coupling can be added between the two gears for speed regulation. Higher speeds place greater demands on gears, as well as on bearing shells. Deceleration generally involves lower speeds, with less stringent requirements.
Our motor rotates at 1490 revolutions per minute, while the compressor rotates at 10248 revolutions per minute. Is it appropriate to use a planetary gear speed increase gearbox? I observed the site – are the planetary gearboxes, the motor, and the compressor coaxial? What are the advantages of using a planetary gearbox?
For units that are already in use, there is a reason why planetary types are used by manufacturers. The planet, motor, and compressor are coaxial (the two-stage gearbox is also coaxial as well); it has a compact design but is expensive.
We have planetary reducers, which are characterized by their high load-bearing capacity, small size, and large reduction ratio； Your device is a speed increase mechanism; just by looking at the rotational speed, reversing the speed increase process would suffice. However, once the speed is high, there’s no issue with torque, but frictional temperature rise becomes a new problem