Drive means for a slide valve and a slide valve

Drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate, wherein the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13), and wherein the travelling nuts (12) each have at least one pivot pin (15a) which is mounted in the cross-yoke (13) so as to be pivotable about a first pivot axis (D1), the first pivot axis (D1) running perpendicular to the spindles (10) in each case.

Drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate, wherein the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13), and wherein the free end of the rod (14) is connected to the cross-yoke (13) by way of a pivot joint (16) which is movable about a second pivot axis (D2) running perpendicular to the rod (14).