Elevator for casing
    1.
    发明授权
    Elevator for casing 失效
    套管电梯

    公开(公告)号:US4441749A

    公开(公告)日:1984-04-10

    申请号:US291943

    申请日:1981-08-11

    IPC分类号: E21B19/06 B66C1/42 E21B19/02

    CPC分类号: E21B19/06

    摘要: An elevator for casing pullers with elevator links adapted for motorized opening and for the lateral approach to a casing which is to be pulled. One of the elevator links is constructed as a hook, into which a locking bolt of a power jack can be pivoted, which said power jack is copivotingly secured on the second movable elevator link and closes the elevator by retraction of the locking bolt.

    摘要翻译: 一种用于具有电梯连接件的套管拉拔器的电梯,其适于电动开启和用于被拉动的外壳的侧向接近。 其中一个电梯连接件被构造成一个钩子,电动千斤顶的锁定螺栓可枢转到该钩中,所述电源插座共同地固定在第二可动电梯连杆上,并通过锁定螺栓的缩回来关闭电梯。

    Method and apparatus for sinking a cased borehole for producing cased
pile foundations
    2.
    发明授权
    Method and apparatus for sinking a cased borehole for producing cased pile foundations 失效
    沉没套管钻孔的方法和装置,用于生产套管桩基

    公开(公告)号:US4202416A

    公开(公告)日:1980-05-13

    申请号:US931723

    申请日:1978-08-07

    摘要: Method for sinking a cased borehole for producing cased pile foundations. The method uses an apparatus comprising a crane, a drilling appliance capable of being lowered into the borehole and a tube extraction machine with double-acting lifting cylinders for increasing the drilling pressure and for extracting the drop tube after the pile has been concreted. The drilling appliance is capable of producing a borehole with a larger diameter than that of the drop tube and can be fixed to the drop tube by means of a clamping device for withstanding the torque of the motor used for driving the drilling tool. In the method, the drop tube is axially secured and is prevented from locating with respect to the ground, a section of borehole having a greater diameter than the diameter of the drop tube is drilled, and subsequently the axial securement of the drop tube is released so that the drop tube slides downwards by a length corresponding to the length of the section of borehole drilled.Apparatus for performing the method is also described.

    摘要翻译: 沉没套管钻孔的方法,用于生产套管桩基。 该方法使用的装置包括起重机,能够下降到钻孔中的钻具,以及具有双作用提升缸的管提取机,用于增加钻井压力,并且在桩被混凝土之后提取下降管。 该钻具能够产生直径大于液滴管直径的钻孔,并且可以通过夹持装置固定在下降管上,用于承受用于驱动钻具的马达的转矩。 在该方法中,下降管被轴向固定并且被防止相对于地面定位,钻出具有比滴管的直径更大的直径的钻孔部分,随后下降管的轴向固定被释放 使得液滴管向下滑动相当于钻孔部分的长度的长度。 还描述了用于执行该方法的装置。

    Rotary boring head
    3.
    发明授权
    Rotary boring head 失效
    旋转镗头

    公开(公告)号:US4193462A

    公开(公告)日:1980-03-18

    申请号:US882879

    申请日:1978-03-02

    CPC分类号: E21B10/44 E02D7/28 E21B10/327

    摘要: A rotary boring head for earth and rock formations with pivotal wings which may be swung radially outwardly and which are provided with inclined return rails. Upon upward movement of the rotary boring head the earth mass presses upon the inclined return rails, so that the pivotal wings are reliably swung inwards again and cannot impinge on the bore tube.

    摘要翻译: 用于土体和岩层的旋转钻头,其具有可枢转的翼,其可以径向向外摆动并且设置有倾斜的返回轨道。 当旋转钻头头向上移动时,土体压在倾斜的回转轨道上,使得枢转翼片可靠地向内摆动并且不会撞击钻孔管。

    Pile extraction apparatus
    4.
    发明授权
    Pile extraction apparatus 失效
    桩提取装置

    公开(公告)号:US4248550A

    公开(公告)日:1981-02-03

    申请号:US13811

    申请日:1979-02-22

    IPC分类号: E02D9/02

    CPC分类号: E02D9/02

    摘要: Pile extraction apparatus having a clamping device for clamping engagement with a pile. The device is suspended from a section of casing pipe by way of a universal joint. In this way the extraction apparatus may be raised and lowered by a commercially available pipe extraction machine.

    摘要翻译: 桩提取装置具有用于与桩夹紧接合的夹紧装置。 该装置通过万向接头从套管的一部分悬挂。 以这种方式,提取装置可以通过市售的管道提取机升高和降低。