| 摘要 |
This invention relates to a device for rotating a body, constituted by at least one speed reducing unit, the driven member of which is disposed substantially coaxially with the axis of rotation of the body, whilst said driven member is coupled by an extension piece, whose axis may have a slight angular clearance for making up the possible misalignment of the driven member and of the axis of rotation of the body, to a flange for rotating the body integral with said body, the driven member of the unit being disposed on the side opposite the body with respect to said unit and said driven member comprising a central traversing cavity, through which the extension piece extends, wherein the body being hollow and having an aperture substantially coaxial to its drive flange and the extension piece having, in manner known per se, a coaxial cavity, a first hollow shaft traverses the extension piece, is rendered integral with the body and is connected in sealed manner to the opening of said body. |
