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1228 条记录 (耗时 0.027 秒)

    Dolly for Rockbolt
    1.
    发明公开
    Dolly for Rockbolt 审中-公开

    公开(公告)号：US20240360760A1

    公开(公告)日：2024-10-31

    申请号：US18688046

    申请日：2023-06-02

    申请人： FCI Holdings Delaware, Inc.

    发明人： Jason Matthews ,  Matthew Holden

    IPC分类号： E21D21/00 ,  E21D20/00

    CPC分类号： E21D21/0053 ,  E21D20/003 ,  E21D21/008 ,  E21D21/0086 ,  E21D21/0093

    摘要： A rock bolt dolly for connecting a self-drilling rock bolt to a rock bolting apparatus includes a drive shaft having a central bore and defining a proximal end and a distal end defining an engagement means for engagement with a corresponding engagement means located on the proximal end of the rock bolt. A sleeve is mounted over the distal end of the drive shaft and arranged to slide along and over the drive shaft and defines a female engagement means at a distal end, for engaging with a nut threaded onto the proximal end of the rock bolt. The interior of the sleeve and exterior of the drive shaft are configured to rotate together about their central axis. A spring biases the distal end of the sleeve away from the distal end of the drive shaft. The dolly operates in two modes, one in which the nut and rod rotate together, and a second where the nut rotates on the rod.

    Safety plug
    2.
    发明授权
    Safety plug 有权

    公开(公告)号：US12104450B2

    公开(公告)日：2024-10-01

    申请号：US18016270

    申请日：2021-07-14

    申请人： Rattlejack Innovations Pty Ltd

    发明人： Leigh Maurice Sutton

    IPC分类号： E21B33/128 ,  E21B23/02 ,  E21B33/129 ,  E21B41/00 ,  E21D21/00

    CPC分类号： E21B33/128 ,  E21B23/02 ,  E21B33/1293 ,  E21B41/0021 ,  E21D21/0026

    摘要： A safety plug for use in a bore hole comprising a bore wall. The safety plug comprises a body having a leading end and a trailing end, and at least one flared portion. An anchoring element extends at least partially around an associated flared portion. Axially displacement of anchoring element relative to its associated flared portion causes the anchoring element to bear against the flared portion and transitions the anchoring element between an unexpanded condition and an expanded condition. A nose, comprising conical elements, extends longitudinally from the leading end of body. The nose is longitudinally compressible.

    ROCK BOLT ASSEMBLY HAVING AN INDICATOR
    4.
    发明公开
    ROCK BOLT ASSEMBLY HAVING AN INDICATOR 审中-公开

    公开(公告)号：US20240125233A1

    公开(公告)日：2024-04-18

    申请号：US18277919

    申请日：2022-02-18

    申请人： ROCBOLT TECHNOLOGIES (PTY) LTD.

    发明人： Werner BELLINGHAM

    IPC分类号： E21D21/02 ,  E21D21/00

    CPC分类号： E21D21/02 ,  E21D21/0046

    摘要： A rock bolt assembly provides an indication of a coupling. The rock bolt assembly includes two shaft sections, namely inner and outer shaft sections. A coupler is configured to couple the two shaft sections together at proximate ends. An electrical conductor is insulated from the outer shaft section and extends from the dead end of the outer shaft section to the head at the live end of the outer shaft section. An electrical contact arrangement is provided at the dead end of the outer shaft section, configured to electrically interconnect the outer shaft section and the conductor when the inner and outer shaft sections are coupled. Electrical terminals are provided at the head and connected respectively to the outer shaft section and to the conductor, the electrical terminals being electrically interconnected or continuous when the outer shaft section and the conductor are electrically interconnected.

    Resin-grouted rock bolt assembly with an adapted sealing bush
    5.
    发明授权
    Resin-grouted rock bolt assembly with an adapted sealing bush 有权

    公开(公告)号：US11674390B2

    公开(公告)日：2023-06-13

    申请号：US17393153

    申请日：2021-08-03

    申请人： INNOVATIVE MINING PRODUCTS (PTY) LTD

    发明人： Brendan Robert Crompton ,  Martin Cawood ,  Paolo Ettore Pastorino ,  Rual Abreu

    IPC分类号： E21D20/02 ,  E21D21/00

    CPC分类号： E21D21/0033 ,  E21D20/028

    摘要： Disclosed is a rock bolt assembly including: an elongate bolt extending with distal and proximal ends; a tubular sleeve longitudinally extending between leading and trailing ends on the bolt so at least a proximal end portion projects from the trailing end of the sleeve; and a nozzle docking bush on the proximal end portion between the sleeve's trailing end and the bolt's proximal end. The bush has a cylindrical body between first and second ends, a central hole extending through the body, spaced-apart annular ridges on the cylindrical body, a grout distributing channel between the ridges, and an aperture in the channel connecting the channel and hole. The central hole includes a leading portion ending at the first end, sealingly receiving the trailing end. A trailing portion of the central hole ends at the second end and sealingly engages the bolt. Each annular ridge seals against a grout nozzle.

    DEFORMED HOLLOW ROCK BOLT
    7.
    发明申请
    DEFORMED HOLLOW ROCK BOLT 有权

    公开(公告)号：US20230009400A1

    公开(公告)日：2023-01-12

    申请号：US17784028

    申请日：2020-12-09

    申请人： INNOVATIVE MINING PRODUCTS (PTY) LTD

    发明人： Brendan Robert CROMPTON ,  Rual ABREU ,  Greig KNOX ,  Paolo Ettore PASTORINO

    IPC分类号： E21D21/00 ,  E21D20/02

    摘要： Disclosed is a self-drilling resin anchored rock bolt with an elongate body of a suitable metal material extending between distal and proximal ends; and a drill bit engaged to the distal end; which body includes a threaded portion at the proximal end, a resin bore which extends through the elongate body, opening at each of the ends, a first integral anchor on the body, including integrally formed paddle formations; wherein the drill bit engaged with the body has a resin conduit which communicates an exterior of the drill bit with the resin bore; wherein the threaded portion has a first section, with a first thread density, extending from the proximal end, and a second section, with a second thread density, starting at the end of the first section and extending towards the distal end; and wherein the first thread density is lower than the second thread density.

    Single-anchor centrally grouted full-length anchored steel wire bundle and supporting method thereof
    9.
    发明授权
    Single-anchor centrally grouted full-length anchored steel wire bundle and supporting method thereof 有权

    公开(公告)号：US11280195B2

    公开(公告)日：2022-03-22

    申请号：US16624541

    申请日：2018-10-29

    申请人： China University of Mining and Technology

    发明人： Nong Zhang ,  Zhengzheng Xie ,  Junyao Zhou ,  Qun Wei

    IPC分类号： E21D21/00 ,  E21D20/02

    摘要： A single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof are described herein. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased; central grouting is carried out for the steel wire bundle so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway.