Thrust device using hydraulic jacks
    1.
    发明授权
    Thrust device using hydraulic jacks 失效
    推力装置采用液压千斤顶

    公开(公告)号:US4248136A

    公开(公告)日:1981-02-03

    申请号:US931729

    申请日:1978-08-07

    摘要: The invention relates to a thrust device using a plurality of hydraulic jacks, and to the automatic control of a plurality of thrust jacks.Two differential jacks have resetting chambers which are permanently under hydraulic pressure. Associated with each jack there is a self-locking piloted valve placed in the active position by a push-rod at the end of a work stroke of the piston of the jack and restored into the inactive position by a piloted valve actuated by a push-rod 39 at the end of the return stroke of the piston to its starting position. In the active position the self-locking piloted valve controls the isolation from the supply of all the work chambers and the venting of the associated work chamber 14.

    摘要翻译: 本发明涉及一种使用多个液压千斤顶的推力装置以及多个推力千斤顶的自动控制。 两个差动千斤顶具有永久在液压下的复位腔。 与每个千斤顶相关联的是,一个自锁导向阀通过推杆在插座的活塞的工作行程结束时置于主动位置,并通过由推杆驱动的导向阀恢复到非活动位置, 杆39在活塞的返回行程结束时到达其起始位置。 在主动位置,自锁导向阀控制从所有工作室的供应和相关联的工作室14的排放的隔离。

    Device for causing translation of a tracked machine
    2.
    发明授权
    Device for causing translation of a tracked machine 失效
    用于使跟踪机器翻译的装置

    公开(公告)号:US4212362A

    公开(公告)日:1980-07-15

    申请号:US946055

    申请日:1978-09-25

    摘要: A device for causing translation of a machine carried on a sledge surrounded by an articulated track comprises a pushing member provided on a jack supported by the sledge, the pushing member cooperating with abutments provided on the inside of the track. The track comprises a plurality of articulated shoes each formed of two L-shaped half-shoes fastened together so that the shorter branches thereof are spaced from one another and are substantially parallel to the direction of movement of the track. Each abutment is carried by the shorter branches of each shoe whereby the passage formed by the space between the two shorter branches is at a position corresponding to that of the respective abutment.

    摘要翻译: 用于使承载在由铰接轨道围绕的滑架上的机器的平移的装置包括设置在由滑架支撑的千斤顶上的推动构件,所述推动构件与设置在轨道内侧上的基台配合。 轨道包括多个铰接的鞋,每个铰链的鞋由两个紧固在一起的L形半鞋形成,使得其较短的分支彼此间隔开并且基本上平行于轨道的移动方向。 每个支座由每个鞋的较短分支承载,由此由两个较短分支之间的空间形成的通道处于与相应支座的位置相对应的位置。

    Continuous sliding support gantry for a large passage
    3.
    发明授权
    Continuous sliding support gantry for a large passage 失效
    连续滑动支撑龙门架为大通道

    公开(公告)号:US4358224A

    公开(公告)日:1982-11-09

    申请号:US166399

    申请日:1980-07-07

    摘要: A gantry support for supporting a roof of a passage includes two parallel supporting units each having a lower frame provided with articulated tracks and an upper frame carried by props and two cross-members. The two cross-members carry an intermediate upper frame in the form of a beam which is slidable on guide elements and adapted to be clamped to the roof by small jacks. As the support advances the beam remains clamped against the roof of the passage until the beam reaches an end stop. The small jack is then released and the beam slidably advanced along the guide elements by means of a further jack.

    摘要翻译: 用于支撑通道顶部的支架支撑件包括两个平行的支撑单元,每个支撑单元具有设置有铰接轨道的下框架和由道具和两个横向构件承载的上框架。 两个横向构件携带以梁的形式的中间上框架,其可在导向元件上滑动并且适于通过小插座夹紧到屋顶。 随着支撑的进行,梁保持夹紧在通道的顶部上,直到梁到达终点。 然后释放小千斤顶,并且通过另一个千斤顶沿着引导元件可滑动地前进。

    Heavy duty adjustable prop with a ball-and-socket joint
    4.
    发明授权
    Heavy duty adjustable prop with a ball-and-socket joint 失效
    重型可调式支架,带球窝接头

    公开(公告)号:US4231672A

    公开(公告)日:1980-11-04

    申请号:US52013

    申请日:1979-06-25

    IPC分类号: E21D17/10 F16C11/06 F16C11/00

    摘要: A ball joint for transmitting forces between the prop and the head-piece of a support unit has a spherical head received in the spherical internal surface of a dome. The dome is enclosed by a spherical ring which is fastened to the head. The rod of a prop carries a pivot which is mounted with radial clearance in a cylindrical cavity located within the sphericl head.

    摘要翻译: 用于在支撑单元的支柱和头部件之间传递力的球形接头具有容纳在圆顶的球形内表面中的球形头部。 圆顶由固定在头部上的球形环封闭。 支柱的杆带有一个枢轴,该枢轴在径向间隙中安装在位于球形头部内的圆柱形腔内。

    Releasable connector for interconnecting two parts subjected to high
stresses
    5.
    发明授权
    Releasable connector for interconnecting two parts subjected to high stresses 失效
    可连接两个受高应力部件的连接器

    公开(公告)号:US5074697A

    公开(公告)日:1991-12-24

    申请号:US447809

    申请日:1989-12-08

    摘要: A releasable connector for interconnecting a first part and a second part, at least one of the parts being subjected to high stresses in particular of vibratory origin and of thermal origin, the connector comprising a sealing ring compressed between the two parts, a main lip formed on the first part to be interconnected, and at least one connection part for exerting a retaining action on the main lip relative to the second part to be interconnected and for compressing the sealing ring. The connector further includes an intermediate ring provided with a flange and constituted by at least two lengths, the intermediate ring being interposed between the main lip and the connection part and being made of a material of low thermal conductivity. The connection part has a thin wall provided in the form of a bellows for adjusting the elasticity of the connection and the thermal barrier constituted by the connection, the thin wall being situated between a first fixing portion for fixing on the second part and a cylindrical second portion having an inside diameter greater than the outside diameter of the main lip. The flange of the intermediate ring bears against the cylindrical second portion of the connection part.

    摘要翻译: 一种用于互连第一部分和第二部分的可释放连接器,所述部分中的至少一个受到特别是振动原点和热源的高应力,所述连接器包括压缩在两个部分之间的密封环,形成的主唇 在要相互连接的第一部分上,以及至少一个连接部分,用于相对于要互连的第二部分在主唇部上施加保持作用并且用于压缩密封环。 连接器还包括具有凸缘并由至少两个长度构成的中间环,中间环插入主唇缘和连接部分之间,并且由导热性低的材料制成。 连接部分具有以波纹管形式设置的薄壁,用于调节连接的弹性和由连接构成的热障,该薄壁位于用于固定在第二部分上的第一固定部分和圆柱形的第二部分之间 内径大于主唇的外径的部分。 中间环的凸缘抵靠连接部件的圆柱形第二部分。

    Method and apparatus for acquiring seismic signals in a borehole
    6.
    发明授权
    Method and apparatus for acquiring seismic signals in a borehole 失效
    在井眼中采集地震信号的方法和装置

    公开(公告)号:US4563757A

    公开(公告)日:1986-01-07

    申请号:US511809

    申请日:1983-07-08

    摘要: The present invention relates to the acquisition of seismic signals at different levels in a borehole, in response to the generation of seismic waves by a source placed on the surface or in the vicinity of the surface. The acquisition is carried out by means of a sonde suspended in the borehole from a cable and equipped with an anchoring pad. At each acquisition level, the pad is anchored in the borehole wall to couple the sonde to the formation, and then the pad is released from the wall once the acquisition is over. The signals acquired are then sent to the surface by means of the cable. The force with which the pad is anchored in the wall is controlled by means of a feedback arrangement which includes a sensor arranged in the pad itself. During the sonde movements from one level to another, the pad is kept in contact with the wall.

    摘要翻译: 本发明涉及响应于放置在表面上或表面附近的源产生地震波而在钻孔中采集不同级别的地震信号。 采集通过从电缆悬挂在钻孔中的探头进行,并配备有锚固垫。 在每个采集级别,将垫固定在钻孔壁中以将探空器耦合到地层,然后一旦采集结束,则该垫从墙壁释放。 然后通过电缆将所获取的信号发送到表面。 衬垫锚固在墙壁上的力通过反馈装置来控制,反馈装置包括设置在垫本身中的传感器。 在探头从一个水平移动到另一个水平面时,垫与墙壁保持接触。