| 摘要 |
A vibrating screen is disclosed which moves by gyrating in a circular path about a horizontal axis. The screen has an inclined body with an elevated feed end defined between a pair of side walls spaced apart by a plurality of rigid tubular cross members. One of the tubular cross members, centrally located, has a diameter large enough for a drive shaft and associated bearings to be mounted therein. Each of the tubular cross members projects on each end into an aperture cut in the adjacent side wall where each is joined to the adjacent side wall by a weld around the entire circumference thereof to provide an integral unitary assembly of light weight, great strength, high natural frequency and with the weld path joining the cross members to the side walls having a configuration which is the same, i.e., circular, as the path of motion of the screen in vertical planes defined by the weld paths.
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