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50 条记录 (耗时 0.013 秒)

    Telescopic tubular prop
    38.
    发明授权
    Telescopic tubular prop 失效
    伸缩管道

    公开(公告)号：US2450374A

    公开(公告)日：1948-09-28

    申请号：US68768146

    申请日：1946-08-01

    申请人： TUBES DE VALENCIENNES & DENAIN

    发明人： GILLET EUGENE CHARLES

    IPC分类号： E21D15/28 ,  E21D15/43 ,  E21D15/58

    CPC分类号： E21D15/43 ,  E04G25/066 ,  E21D15/285 ,  E21D15/581

    摘要： 638,743. Pit props. SOC. ANON. DES TUBES DE VALENCIENNES ET DENAIN. July 8, 1946, No. 20282. Convention date, June 8, 1945. [Class 20 (ii)] [Also in Group XXX] A telescopic pit prop comprises a tubular hood supporting plunger 4, Figs. 2, 3 slotted longitudinally and normally freely sliding in a cylindrical inner bearing means 9, 10 at the upper end of a tubular standard 1, the. plunger 4 being expanded radially into locking engagement with the bearing means 9, 10 by a wedge 11 forced into the slot 5 by a key 12, the slot and wedge being tapered upwardly. Hoop rings 9 and a tubular spacer member 10 form the inner bearing means which is provided with an extension 3 to house the wedge I and key 12, the latter having a pair of flanges one of which engages a slot in the back of the wedge 11 and the other a slot in the extension 3. Accidental withdrawal of the key 12 is prevented by means of a removable cap 13 and a spring-urged cotter pin inserted in a hole in the key. A pin 21, Fig. 3, freely slidable in a boss 20 on the extension 3 has its upper end in contact with the lower edge of an annular flange 8, Fig. 2, of a pivotal cap 6 and serves to measure the penetration of the plunger. In operation the plunger 4 is first brought into engagement with a roof cross-bar by means of a pair of keys 25, Fig. 5 (not shown), which are alternately engaged in staggered slots 26, Fig. 2, in the standard or alternatively a hoisting device, Fig. 6 (not shown), (see Group XXX), may be used.

    Apparatus for wall timbering of drifts, tunnels, and the like
    39.
    发明授权
    Apparatus for wall timbering of drifts, tunnels, and the like 失效
    用于漂移，隧道等的墙体木材的装置

    公开(公告)号：US4540065A

    公开(公告)日：1985-09-10

    申请号：US566187

    申请日：1983-12-28

    申请人： Seiji Kawaguchi ,  Takeki Fujiwara ,  Shigeo Kodama ,  Haruo Ito ,  Kyuemon Yamamoto

    发明人： Seiji Kawaguchi ,  Takeki Fujiwara ,  Shigeo Kodama ,  Haruo Ito ,  Kyuemon Yamamoto

    IPC分类号： E21D11/40 ,  E21D15/44 ,  E21D15/58

    CPC分类号： E21D11/40

    摘要： Apparatus mounted on a self-propelled truck, and provided with mechanisms for effectively, smoothly, and safely performing various timbering work in drift and tunnel walls and roofs. The mechanism includes a working platform which is rotatable and kept horizontal for easy conveyance of timbering materials even in a narrow drift and for steady performance of timbering by workers on the platform. Planting of props is readily performed by a device provided to the platform, which grasps a prop, shifts it and erects the prop over a selected pit, and bridging of top beams over capitals of planted props is accurately made by lifting means provided on the working platform.

    摘要翻译： 装置安装在自走式卡车上，并提供了有效，平稳和安全地执行漂移和隧道墙壁和屋顶的各种木材加工工作的机构。 该机构包括一个可旋转并保持水平的工作平台，即使在狭窄的漂移中也能轻松地运输木材，并且平台上的工人稳定地进行木材的施工。 通过设置在平台上的装置容易地进行道具的种植，该装置抓住支柱，将其移动并在选定的坑上竖立支柱，并且通过在工作中提供的提升装置来精确地制作顶部横梁在种植道具的首都上的桥接 平台。

    Excavation roof support and method of installing the same
    40.
    发明授权
    Excavation roof support and method of installing the same 失效
    挖掘屋顶支撑及其安装方法

    公开(公告)号：US4277204A

    公开(公告)日：1981-07-07

    申请号：US74998

    申请日：1979-09-13

    申请人： Manfred Koppers ,  Karlheinz Bohnes ,  Harry J. Fitzgerald

    发明人： Manfred Koppers ,  Karlheinz Bohnes ,  Harry J. Fitzgerald

    IPC分类号： E21D15/02 ,  E21D15/58 ,  E21D15/00

    CPC分类号： E21D15/02 ,  E21D15/58

    摘要： A method and a system are disclosed for supporting an overburden. A single-section or telescoped multi-section longitudinally slit prop casing of light sheet material such as cardboard or metal has a fabric bag installed in it. When the casing is erected the bag is filled with a slurry of hardenable substance which, upon hardening, forms in the bag a column which supports the overburden. The casing may be left in place or it may be removed for re-use.

    摘要翻译： 公开了用于支撑覆盖层的方法和系统。 轻质片材（如纸板或金属）的单段或多层纵向狭缝支撑套筒内装有一个织物袋。 当套管竖立时，袋子中填充有可硬化物质的浆料，硬化后，在袋子中形成支撑上覆层的柱。 外壳可以放置在适当位置，或者可以将其移除以重新使用。