Linkage elevator for drill pipe of rock drilling machine, has flanges with linkage stud, and linkage lock, and spanner surfaces of sliding piece lies parallel to spanner surface of drilling rod depends on work step

摘要

The linkage elevator (1) has flanges (2,5) with linkage stud (3) and a linkage lock (4). The sliding piece (9) of spanner surfaces (13) has a circular passage for a drilling rod (7). The spanner surfaces of the sliding piece lies parallel to the spanner surface of the drilling rod (14) depends on the work step during expansion of linkage rod, so that a horizontal or rotating movement of the drilling rod does not take place.