| 摘要 |
<p>Arrangement for the rotational drive of a machine or plant element, for example a crane, on a chassis or foundation, with a worm gear mechanism (3, 4), the housing (2) of which is secured on the chassis or foundation, the worm (3) of which can be set in rotation manually or by a drive motor and the worm wheel (4) of which is rotatably mounted in the housing (2), this being achieved by providing it with respective separate rolling-contact bearings (10, 11, 12) on both sides (6A, 6B) of its toothing (6) provided for engagement with the worm (3), the housing (2) being formed with a base part (2A) and a cover part (2B) which can be fixed in surface contact with the latter, at least one side face (6A, 6B) or untoothed side wall of the worm wheel (4) having a connecting projection which passes through the base or cover part (2A, 2B) and is designed for connection to the part to be rotated, and the two outer races (12) of the rolling-contact bearings resting against and/or being fixed on the respective walls of the base and cover parts (2A, 2B) of the housing (2), and the two associated inner races (10) each resting against and/or being fixed on the wall of the worm wheel (4). <IMAGE></p> |
