Rod section of an earth drilling string

Abstract

A rod section of a ground drilling rod, wherein the rod section is configured at its end as a plug connection and comprises at one end (a) a connection plug or (b) a connection socket, wherein the connection plug on the outside or the connection socket on the inside comprises nonround segments along a cross section, wherein the cross section is constant in configuration.

1 . A rod section of a ground drilling rod, wherein the rod section is configured at its end as a plug connection and comprises at one end:
 (a) a connection plug or (b) a connection socket, wherein the connection plug on an outer surface thereof, or the connection socket on an inner surface thereof, comprises nonround segments along a cross section, wherein the cross section is constant in configuration.   
     
     
         2 . The rod section according to  claim 1 , wherein various nonround segments are formed. 
     
     
         3 . The rod section according to  claim 2 , wherein the various nonround segments alternate along the circumference. 
     
     
         4 . The rod section according to  claim 1 , wherein the nonround segments extend for a length of 20 mm to 120 mm in the longitudinal extension of the rod section. 
     
     
         5 . The rod section according to  claim 1 , wherein an insertion segment is formed at the entrance side to the nonround segments. 
     
     
         6 . The rod section according to  claim 1 , wherein inside the rod section there is present a plug connection for an electrical connection configured coaxially to the connection socket or connection plug. 
     
     
         7 . A driving element for driving a ground drilling rod into the ground, being configured to engage with a rod section, wherein the driving element engaging with the rod section is configured: (a) as a connection plug, having on the outside a cross section with nonround segment; or (b) as a connection socket, having on the inside a cross section with nonround segments, while the cross section is constant. 
     
     
         8 . The driving element according to  claim 7 , wherein various nonround segments are formed. 
     
     
         9 . The driving element according to  claim 8 , wherein the segments alternate along the circumference. 
     
     
         10 . The driving element according to  claim 7 , wherein the nonround segments extend for a length of 20 mm to 80 mm in the longitudinal extension of the driving element. 
     
     
         11 . The driving element according to  claim 7 , wherein an insertion segment is formed at the entrance side to the nonround segments. 
     
     
         12 . The driving element according to  claim 7 , wherein inside the driving element there is present a plug connection in the form of an electrical connection plug or an electrical connection socket for an electrical connection. 
     
     
         13 . The driving element according to  claim 12 , wherein the plug connection is oriented coaxially to the connection socket or the connection plug. 
     
     
         14 . A rod section system comprising two or more rod sections according to  claim 1 . 
     
     
         15 . A ground drilling device comprising a driving element according to  claim 7 .