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    • 9. 发明申请
    • DEVICE FOR DRILLING A BORE HOLE IN THE GROUND
    • 设备用于生产土洞
    • WO1997034070A1
    • 1997-09-18
    • PCT/DE1997000469
    • 1997-03-11
    • WIRTH MASCHINEN- UND BOHRGERÄTE-FABRIK GMBHTIBUSSEK, FritzHEINRICHS, Peter
    • WIRTH MASCHINEN- UND BOHRGERÄTE-FABRIK GMBH
    • E21B03/02
    • F16L27/087E21B3/025E21B4/20E21B21/02F16J15/006
    • A device for drilling a bore hole in the ground comprises a rotary drive head and a hollow connecting rod (105) with which the rotary drive head engages and which can be lowered through the rotary drive head into the bore hole. The lower end of the connecting rod (105) is provided with a tool head with several drilling hammers (41) which operate downwards and powered by a fluid drive medium. In a first embodiment, a rotary connecting head (120) is provided in the upper region of the connecting rod (105); through the rotary connecting head, the upper end of the connecting rod (105) can be supplied with a fluid drive medium under high pressure and the rotary connecting head is provided in its housing (124) with a transfer chamber which is connected to an external feed line (123) for the fluid working medium and sealed axially on both sides. On either side of the transfer chamber, several axially graduated ring seals which are hydraulically balanced in steps are provided. In a second embodiment, the drive is effected with oscillation through a restricted angle, thus allowing the use of flexible feed lines for flushing and working mediums and removal of excavated material.
    • 用于生产土孔的装置包括一个旋转驱动头和其上的旋转驱动头啮合,并且通过旋转驱动头,并进入地面的孔降低的中空连杆(105)。 在连杆(105)的下端部,具有多个工作向下的工具头,由(41)提供了一种流体驱动介质锤钻驱动。 在第一实施例的联动装置(105)的顶部是旋转连接头(120)被布置成通过该连接杆(105)的驱动介质的流体在高压下,并在其壳体(124)被供给的上端有一个具有外 具有用于在通信中的流体工作介质,在两侧过渡腔的轴向密封供应线(123)。 在每种情况下过渡腔的多个在轴向上错开的两侧,设置有逐渐液压解除密封圈。 在第二个实施例的驱动是通过一个有限的角度,这允许冲洗和工作介质的供给和挖掘的泥土的放电使用柔性供应线以振荡方式。