Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts

Abstract

The present invention is directed to a device and assembly for the anchoring and tensioning of cable bolts used in earthen formations to stabilize the earthen structures to prevent or minimize the caving in or sluffing-off of the earthen structure. The new invention presents an integral wedge barrel and threaded sleeve which can be turned to facilitate both the mixture of cementing resins and the physical tensioning of an anchored cable and which can reduce or prevent undesirable twisting of the cable during tensioning.

1 . A cable bolt tensioning device comprising:
 an integral wedge barrel and threaded sleeve configured to receive a cable, the threaded sleeve disposed in an aperture of a bearing plate; and
 means for substantially preventing the rotation of the cable in the aperture. 
   
   
   
       2 . The device of  claim 1  further comprising wedges disposed within the wedge barrel. 
   
   
       3 . The device of  claim 1  wherein the bearing plate comprises one or more projections to engage an adjacent surface. 
   
   
       4 . The device of  claim 1  wherein the means for substantially preventing the rotation of the cable in the aperture comprises mating surfaces of the threaded sleeve and of the aperture of the plate wherein the mating surface of the threaded member is a substantially flat surface. 
   
   
       5 . The device of  claim 1  wherein the means for substantially preventing the rotation of the cable in the aperture comprises mating surfaces of the threaded sleeve and of the aperture of the plate wherein the mating surface of the threaded member is a keyway into which a portion of plate projects. 
   
   
       6 . A cable bolt assembly comprising:
 an integral body comprising wedge barrel and threaded sleeve configured to receive a cable;   a bearing plate defining an aperture therethrough, the threaded sleeve disposed in the aperture;   one or more cables disposed within the integral body;   wedges disposed within the wedge barrel between the wedge barrel and the cable(s); and   a nut disposed about the threaded sleeve, the nut having threads compatible with the threaded sleeve; and   means for substantially preventing the rotation of the cable(s) in the aperture.   
   
   
       7 . The assembly of  claim 6  further comprising a bearing plate disposed about the threaded sleeve such that the nut is disposed between the integral body and the bearing plate. 
   
   
       8 . The assembly of  claim 6  further comprising one or more washers disposed about the threaded sleeve portion between the nut and the bearing plate. 
   
   
       9 . The assembly of  claim 6  further comprising a sleeve cover disposed along a length of the threaded sleeve. 
   
   
       10 . The device of  claim 6  wherein the bearing plate comprises one or more projections to engage an adjacent surface. 
   
   
       11 . The device of  claim 6  wherein the means for substantially preventing the rotation of the cable in the aperture comprises mating surfaces of the threaded sleeve and of the aperture of the plate. 
   
   
       12 . The device of  claim 11  wherein the mating surface of the threaded sleeve is a substantially flat surface. 
   
   
       13 . The device of  claim 11  wherein the mating surface of the threaded sleeve is a keyway into which a portion of plate projects. 
   
   
       14 . A cable bolt assembly comprising:
 an integral wedge barrel and threaded sleeve configured to receive a cable, the threaded sleeve disposed in an aperture of a bearing plate; and   means for substantially preventing the twisting of the cable during tensioning.   
   
   
       15 . The device of  claim 14  wherein the bearing plate comprises one or more projections at or near the periphery of the plate to engage an adjacent surface. 
   
   
       16 . The device of  claim 14  wherein the means for substantially preventing the twisting of the cable during tensioning comprises mating surfaces of the threaded sleeve and of the aperture of the plate combined with one or more projections on the learning plate, wherein the mating surface of the threaded sleeve is a substantially flat surface. 
   
   
       17 . The device of  claim 14  wherein the means for substantially preventing the twisting of the cable during tensioning comprises mating surfaces of the threaded sleeve and of the aperture of the plate combined with one or more projections on the learning plate, wherein the mating surface of the threaded sleeve is a keyway into which a portion of the plate projects.