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    • 1. 发明授权
    • Method and apparatus for breaking a hard compact material such as rock
or concrete
    • 破碎硬质合金材料如岩石或混凝土的方法和设备
    • US4114950A
    • 1978-09-19
    • US795176
    • 1977-05-09
    • George Anthony Cooper
    • George Anthony Cooper
    • B25D9/00B25D9/14E21C37/04E21C37/02
    • B25D9/14E21C37/04B25D2250/171
    • A method for breaking a hard compact material such as rock or concrete. The method includes drilling a hole into the material, gripping a portion of the wall of the hole by applying a radially outwardly directed force thereto, and applying an axially outwardly directed force to the gripped region in order to cause cracks to arise in the wall of the hole. One of the forces is generated by means of sequentially repeated axially directed impacts. The apparatus for carrying out the method comprises a gripping means and a wedge means slidable relative to the gripping means. The gripping means and the wedge means have cooperating wedge surfaces. A rear extension member having a shoulder is attached to the wedge means. A hammer piston reciprocable in the apparatus housing delivers sequentially repeated axially directed impacts upon the shoulder.
    • 一种破碎硬质合金材料如岩石或混凝土的方法。 该方法包括在材料中钻一个孔,通过向其中施加径向向外的力来夹持孔的一部分壁,并且向被夹紧的区域施加轴向向外的力,以便在壁的壁上产生裂纹 那个洞。 其中一个力是通过顺序重复的轴向冲击产生的。 用于执行该方法的装置包括夹持装置和相对于夹持装置可滑动的楔形装置。 夹持装置和楔形装置具有配合的楔形表面。 具有肩部的后延伸构件附接到楔形装置。 可在装置壳体中往复运动的锤式活塞在肩部上顺序反复地轴向定向冲击。