| 摘要 |
The electric hoist comprises a drum, seated in a carrying frame, and an electric motor, mounted in the face of the carrying frame, and connected kinematically to a planetary reduction gear, the housing of which is disposed totally inside the drum. The housing is connected to the drum by means of a gear diaphragm and a gear ring. The carrying frame is connected by means of a connecting shaft and spline joints to the output shaft of a stem, and the gear ring is shaped as an integral part of the drum.
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