公开(公告)号：US3888131A

公开(公告)日：1975-06-10

申请号：US40400373

申请日：1973-10-05

申请人： ELAST O COR PROD & ENG

发明人： REID CHARLES M

IPC分类号： B65G39/02 ,  B65G39/073 ,  F16H7/18

CPC分类号： B65G39/073 ,  B65G39/02

摘要： The present invention provides a belt conveyor idler roll surfact having thereon a pair of opposed helical ribs, each of the ribs spiralling around the roll surface a plurality of times so as to provide said surface with a pair of screw thread-like formations extending substantially the full length of the roll. The ribs are dimensioned and proportioned in predetermined fashion and made from a material which is sufficiently flexible as to permit the ribs to be deflected and released in a continuous cyclic fashion due to contact of the belt surface with the threads whereby to provide a self-cleaning action. The roller is also provided with a means at mid-length which divides or separates the two spirals. In the preferred form of the invention the roll surface is formed of a polyurethane elastomer which provides the necessary flexibility coupled with excellent abrasion resistance.

摘要翻译： 本发明提供了一种带式输送机惰辊表面，其上具有一对相对的螺旋肋，每个肋在辊表面周围螺旋地多次，以便使所述表面具有基本上延伸的一对螺纹状结构 卷的全长。 这些肋的尺寸和成比例以预定的方式制成并且由材料制成，该材料具有足够的柔韧性，以便允许肋以连续的循环方式被偏转和释放，这是由于带表面与螺纹的接触，从而提供自清洁 行动。 辊子还具有中间长度的装置，其分割或分离两个螺旋。 在本发明的优选形式中，辊表面由聚氨酯弹性体形成，该聚氨酯弹性体提供了与优异的耐磨性相结合的必要柔性。