| 摘要 |
<p>Device comprising an internal part shaped like a wedge (1); the two inclined faces of the wedge are each covered by a U-shaped metal sheet (2, 3) whose interior face is in contact with the corresponding inclined face of the wedge that it covers; the wedge is pushed between the two metal sheets in the direction of the elements to be spaced apart or of the part to be lifted; the metal sheets are connected to the wedge pushing system (4) by means of rods (7, 8) comprising hinge pivots (10, 10', 11, 11'); elastic means (13, 14) maintain the U-shaped metal sheets in contact with the inclined faces of the wedge.</p> |
