Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine

Abstract

Coupling sleeve for connecting a threaded rock bolt ( 1 ) to an impact rock drilling machine ( 2 ) comprising a first part ( 3 ) provided with an internal thread ( 4 ) for connection of the rock bolt ( 1 ) and a second part ( 5 ) provided with an internal thread ( 6 ) for connection of the rock drilling machine ( 2 ), whereby the second part ( 5 ) comprises a transversely to a longitudinal axis ( 9 ) on the coupling sleeve arranged locking device ( 7 ) which cooperates with a region ( 8 ) on the rock drilling machine ( 2 ) for preventing that the coupling sleeve and the rock drilling machine ( 2 ) are separated.

1 . Coupling sleeve for connecting a threaded rock bolt ( 1 ) to an impact rock drilling machine ( 2 ), said coupling sleeve comprising a first part ( 3 ) provided with an internal thread ( 4 ) for connection of the rock bolt ( 1 ), and a second part ( 5 ) provided with an internal thread ( 6 ) for connection of the rock drilling machine ( 2 ), characterized in that the second part ( 5 ) comprises a locking device ( 7 ) arranged substantially transversely to a longitudinal axis ( 9 ) of the coupling sleeve, said locking device cooperating with a region ( 8 ) on the rock drilling machine ( 2 ) for preventing separation of the coupling sleeve and the rock drilling machine ( 2 ).