Coupling device

Abstract

The invention relates to a coupling device for drill rods comprising a receiving socket for receiving a connecting portion of the drill rod. Provision is made for at least one locking device with a locking element, which is supported in an adjustable manner between a release position and a locking position, in which the locking element engages into a corresponding recess of the connecting portion.

1 . Coupling device for drill rods comprising a receiving socket for receiving a connecting portion of the drill rod, wherein at least one locking device with a locking element is provided, which is supported in an adjustable manner between a release position and a locking position, in which the locking element engages into a corresponding recess of the connecting portion. 
   
   
       2 . Coupling device according to  claim 1 ,
 wherein   the locking device has a housing arranged on the outer side of the receiving socket and   in that a sliding element is supported in the housing for adjusting the locking element.   
   
   
       3 . Coupling device according to  claim 2 ,
 wherein   the sliding element is designed as a pivotably supported bolt having a cam, which engages into an obliquely extending slotted link in the housing.   
   
   
       4 . Coupling device according to  claim 3 ,
 wherein   a pivot lever is provided for pivoting the bolt, which is connected to the bolt at a rear portion thereof.   
   
   
       5 . Coupling device according to  claim 1 ,
 wherein   the locking element is supported on the sliding element in a radially movable and resilient manner.   
   
   
       6 . Coupling device according to  claim 1 ,
 wherein   on an inner side of the receiving socket axial ribs are arranged, which can be brought into engagement with corresponding axial grooves of the connecting portion in order to produce a rotational connection.   
   
   
       7 . Coupling device according to  claim 1 ,
 wherein   three locking devices are provided, which are arranged in an evenly distributed manner at the outer circumference of the receiving socket.   
   
   
       8 . Drilling apparatus comprising a drill drive for driving a drill rod,
 wherein   a coupling device according to  claim 1  is provided.   
   
   
       9 . Drilling apparatus according to  claim 8 ,
 wherein   the receiving socket is fixed to the output shaft of the drill drive.   
   
   
       10 . Drilling apparatus according to  claim 8 ,
 wherein   the drill drive is supported on a carriage which is guided in a movable manner on a mast.