Patent ID: 8925731
Filing Date: 2015-01-06
Classification: B06B,B07B,F25B,F28F

Abstract:
1. A drive device for a screening body of a screening machine for mineral materials for crushing, such as oil sand, the drive device comprising: a drive motor; a synchronous transmission operatively connected to said drive motor, said synchronous transmission having at least two output shafts which rotate in pairs in antiphase at the same rotation speed with respect to one another, wherein the drive motor and the synchronous transmission are mounted in a stationary manner, separately from the screening body, at a side alongside the screening body, and do not oscillate therewith; a single horizontal shaft associated with each output shaft which has unbalance elements; a rotationally rigid universally jointed shaft connecting each single horizontal shaft to the respective output shaft, each single horizontal shaft being arranged with an axis parallel to the adjacent horizontal shaft and transversely with respect to the conveying direction of the screening body, and wherein the unbalance elements are arranged in the horizontal direction between side walls of the screening body; a cross member connected to the side walls of the screening body; bearing elements, each horizontal shaft being supported by the bearing elements on the cross member, wherein the unbalance elements are arranged exclusively directly on the horizontal shafts, the bearing elements are arranged exclusively on the horizontal shafts in the axial direction of the shafts between the unbalance elements, and the bearing elements are supported on the cross member which is connected to the side walls, each horizontal shaft being formed of shaft sections arranged in alternating succession one behind the other and of offset clutches connecting said shaft sections in a rotationally rigid manner and mainly being flush to each other, wherein one shaft section together with the unbalance elements and the bearing elements arranged at said one shaft section forms an unbalance module.