| 摘要 |
<p>An apparatus for mechanically breaking up or splitting rock. Apparatus of this type may consist of a cylinder block having a hydraulically actuatable, longitudinally movably piston arranged therein, with this piston acting, by way of a slider wedge which is connected to the piston rod, on headed presser cheeks which can be inserted in drill holes and laterally moved, the presser cheeks having an obliquity which corresponds to the inclination of the slider wedge, and with the head of one of the presser cheeks being U-shaped and having arms which engage opposite sides of the slider wedge. By arranging for the heads of the presser cheeks to engage one in the other, all axial displacements or axial loads of one of the presser cheeks being transmitted, uniformly and in the same direction, to the other presser cheek, the U-shaped head of one of the presser cheeks being radially shiftably suspended in a hollow member and engaging round a reduced neck portion of the head, which is T-shaped in longitudinal cross-section, of the other presser cheek.</p> |
