| 摘要 |
A two-stage worm gear transmission in which a first-stage worm gear drive has a worm wheel operatively connected with a worm of a second-stage worm gear drive to drive the latter worm. The second-stage worm gear drive includes a stationary worm wheel having an inner periphery provided with teeth which mesh with the worm of the second-stage drive. Both the first-stage worm gear drive and the worm of the second-stage worm gear drive are carried by a rotary frame which has an axis coinciding with the axis of the stationary worm wheel.
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