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    • 5. 发明授权
    • Suction drill unit for dowel anchorage in rock
    • 用于岩石中定位销的吸力钻机
    • US06719072B2
    • 2004-04-13
    • US10072719
    • 2002-02-06
    • Hans-Werner Bongers-AmbrosiusTim Pröls
    • Hans-Werner Bongers-AmbrosiusTim Pröls
    • B28D126
    • E21D20/003B23B51/0036B23B2226/75B23B2270/62B23Q11/0046Y10T408/50
    • A suction drill unit for the installation of a drill dowel (2) into rock, concrete, masonry and similar materials has an insertion end (3) for insertion into an at least partially rotary and percussive acting hand tool drilling device, with a reduced diameter shank (7) having an open suction passageway (9) extending axially through the shank (7) towards a bit head (8) and a rearward radial communication passage (10) connected thereto for suction-tight communication with a non-rotary suction head (11), wherein the drill bit head (8) is formed with an eccentrically arranged bit head tip (12) for boring of a hole (14) having a diameter (D) greater than that of the drill bit head diameter (B).
    • 用于将钻榫(2)安装到岩石,混凝土,砖石和类似材料中的吸入钻机单元具有用于插入至少部分旋转和冲击作用的手动工具钻孔装置的插入端(3),其具有减小的直径 柄(7)具有朝向钻头(8)轴向延伸穿过柄部(7)的开放抽吸通道(9)和连接到其上的向后径向连通通道(10),用于与非旋转吸头 (11),其中所述钻头头(8)形成有偏心布置的钻头头部(12),用于钻出具有大于所述钻头头部直径(B)的直径(D)的孔(14) 。