Underground securing system comprising a rock bolt that includes an attachment device

Abstract

The invention relates to a securing system for the roof ( 10 ) of an underground road, said securing system comprising a rock bolt ( 1 ) to which a mobile attachment device ( 20 ) can be secured, said attachment device ( 20 ) being connected to the rock bolt ( 1 ) so as to be freely rotatable relative to the rock bolt ( 1 ).

1 . A fastening system of a gallery roof of a route section underground, wherein the fastening system comprises a rock bolt and an anchor device configured to be fastened to the rock bolt,
 wherein   the anchor device is configured to be connected with the rock bolt freely pivoting relative to the rock bolt.   
     
     
         2 . The fastening system according to  claim 1 ,
 wherein   the anchor device comprises a screw-in sleeve configured for connection with the rock bolt.   
     
     
         3 . The fastening system according to  claim 2 ,
 wherein   the anchor device is configured to be connected with the rock bolt through a screw-thread connection.   
     
     
         4 . The fastening system according to  claim 2 ,
 wherein   the anchor device comprises a screw-in sleeve, the screw-in sleeve comprising an internal thread, wherein the screw-in sleeve is configured to be screwed onto a protruding part of an anchor rod of the rock bolt.   
     
     
         5 . The fastening system according to  claim 2 ,
 wherein   the screw-in sleeve comprises a shoulder configured for reception of a sleeve-shaped swirl unit.   
     
     
         6 . The fastening system according to  claim 5 ,
 wherein   the swirl unit indicates comprises an inset-attachment element.   
     
     
         7 . The fastening system according to  claim 6 ,
 wherein   the inset-attachment element is a strap.   
     
     
         8 . The fastening system according to  claim 5 ,
 wherein   a bearing is arranged between the shoulder and the swirl unit.   
     
     
         9 . The fastening system according to  claim 5 ,
 wherein   a bolt head is arranged on the shoulder configured for the bedding of a tool.   
     
     
         10 . The fastening system according to  claim 4 ,
 wherein   the anchor device comprises an indication element configured for the determination of a screw-in depth between the screw-in sleeve and the protruding part of the anchor rod of the rock bolt.   
     
     
         11 . The fastening system according to  claim 10 ,
 wherein   the indication element is a pin.   
     
     
         12 . The fastening system according to  claim 11 ,
 wherein   the pin is in a bore in a bolt head and a shoulder and extends with one end into a hollow space of the screw-ion sleeve.   
     
     
         13 . The fastening system according to  claim 10 ,
 wherein   the indication element is configured to be taken up non-positively by a bolt head or a shoulder of the anchor device.   
     
     
         14 . A fastening system of a gallery roof of a route section underground, comprising:
 a rock bolt; and   an anchor device configured to be fastened to the rock bolt, the anchor device comprising a screw-in sleeve configured for a thread connection with the rock bolt;   wherein the anchor device is configured to be connected with the rock bolt freely rotating about a vertical axis relative to the rock bolt without rotating off from the rock bolt.   
     
     
         15 . The fastening system according to  claim 14 , wherein the screw-in sleeve comprises a shoulder configured for the reception of a sleeve-shaped swirl unit; and
 wherein a bolt head is arranged on the shoulder configured for the bedding of a tool.   
     
     
         16 . The fastening system according to  claim 3 , wherein the screw-thread connection is a self-locking screw thread. 
     
     
         17 . The fastening system according to  claim 7 , wherein the inset-attachment element is configured for the reception of a spring hook of a protective harness. 
     
     
         18 . The fastening system according to  claim 8 , wherein the bearing is at least one bearing selected from the group consisting of an axial ball bearing and a plain bearing. 
     
     
         19 . The fastening system according to  claim 12 , further comprising an arrest wire configured to catch the pin;
 wherein the arrest wire is held with a ring fastener to the anchor device.   
     
     
         20 . A method of attaching to a gallery roof of a route section underground, comprising:
 fastening with the system of  claim 6 , the fastening comprising;
 screwing the anchor device onto a threaded piece of the rock bolt extending beyond the rock; and 
 connecting a spring hook to the inset-attachment element.