| 摘要 |
The electric actuator for protecting a system from overloads comprises a planet gear (7) rotated by driving gear (3), a sun gear and a pinion gear (9). In the center of power gear (5) shaft, a sun gear (8) and a pinion gear (9) with the teeth being one less in number than that of the sun gear (8) are engaged with a planet gear. A ball clutch controlling rotation forces is fixed on the sun gear shaft, the electric power of motor (1) being cut off from overloads of the output shaft safely to protect a system.
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