公开(公告)号：EP4130427A1

公开(公告)日：2023-02-08

申请号：EP21189971.1

申请日：2021-08-05

申请人： Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd

发明人： Rataj, Mietek ,  Darlington, Bradley ,  Roach, Warren

IPC分类号： E21D21/00

摘要： A rock bolt (1) comprising a wedge-based expansion mechanism. The expansion mechanism comprises drive wedge (8) acting to expand an intermediate wedge (9) upon tensioning of the rock bolt (1), wherein the intermediate wedge (9) acts to expand a wedge means attached to an outer tube (4) of the rock bolt (1). The use of the intermediate wedge (9) enables greater expansion of the rock bolt (1).

公开(公告)号：EP4130426A1

公开(公告)日：2023-02-08

申请号：EP21189965.3

申请日：2021-08-05

申请人： Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd

发明人： Barry, John ,  Roach, Warren ,  Darlington, Bradley ,  Rataj, Mietek ,  Young, Peter ,  Weaver, Steven ,  Vallati, Osvaldo

IPC分类号： E21D21/00 ,  E21D20/00

摘要： A driver socket (1) for installation of a ground reinforcement bolt (100). The driver socket (1) comprises a cylindrical tube (2) with a longitudinal axis (A), wherein a leading end (10) of the driver socket (1) is adapted to be arranged in connection to the bolt (100) and a trailing end (20) of the driver socket (1) is adapted to be arranged in connection to a driving device, and wherein the driver socket (1) comprises a through hole. The through hole along its axial length has a varying cross-sectional area comprising a first diameter (D1) in a mid-section (3) being smaller than a second diameter (D2) in the leading section (13); and wherein the through hole comprises a transition (11) between the mid-section (3) and the leading section (13) with a frustoconical shape. Also an installation system comprising a ground reinforcement bolt (100) and a driver socket (1).