| 摘要 |
1. Motor-driven transmission for machines, comprising a worm wheel (1) capable of being connected for rotation with the machine shaft and engaged by a worm (15), to which is drivably connected a drive motor (11) overcoming the load moment at the worm wheel (1), characterized in that the worm wheel (1) is engaged by a further worm (5) which is driven by a control motor (8) and serves to vary the speed at the transmission, this further worm (5) forming a self-locking gear with the worm wheel (1). |
