| 摘要 |
<p>In a screening machine having a screen assembly which is demountably attached to a vibratory frame, the screen assembly is seated on a mounting surface of the frame, bounded by a lip which extends around the edge of the assembly but which does not engage it. The screen assembly is held on the mounting surface by detachable clamps. As the interface between the screen assembly and the frame at the mounting surface, a rigid, inelastic composite type friction material is used, to resist relative motion between the frame and the screen assembly and thereby eliminate abrasive wear and loss of the intended screening motion.</p> |
