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由图可见,选一内径60毫米左右的废旧轴承(312、212均可),在轴承内圈对称焊上4个或6个脱粒齿板,再在内圈侧面焊上一摇把、在外圈垂直焊上一个直径16毫米、长约150毫米的长螺栓,最后通过长螺栓固定在长凳的一端。脱粒齿板作成梯形,厚约5毫米,长25毫米,大端高15毫米,小端高10毫米。焊脱粒齿板时其大端均应位于同一个方向,齿板中间应能通过玉米芯。使用时,人坐在长凳上用右手摇动摇把,轴承内圈旋转、左手拿
Can be seen from the figure, choose a diameter of about 60 millimeters of used bearings (312,212 are available), the symmetry in the bearing inner ring welding 4 or 6 threshing tooth plate, and then welded on the inner side of a swing handle, the outer ring Vertical welding a long 16mm diameter, about 150mm long bolt, and finally by a long bolt fixed to one end of the bench. Threshing tooth plate made of trapezoidal, about 5 mm thick, 25 mm long, big end 15 mm high, small end of 10 mm high. When the threshing tooth plate welding big end should be located in the same direction, the middle tooth plate should be able to pass corn cob. When using, the person sits on the bench and shakes the handle with the right hand hand, the inner ring of bearing rotates, the left hand takes