Reversible device with an impact device for the production of bores in the earth with an overload protection and a method for producing boreholes.

摘要

Reversible device with an impact device for the production of bores in the earth with an overload protection, consisting of:– a in a housing (1) - towards and fro, percussion piston (2), a with the striking piston (2) connected in an axially movable manner and to the housing (1) axially spring-loaded control member (3),– a in the control member (3) arranged central channel (14) and a in the side wall of the control member (3) and a seat (4), arranged therein, spring-loaded insert (5) which, by means of the printing medium with a stop (6) of the in the housing (1) which is designed annular space (7) and thus the control member (3) relative to the housing (1) in the control position for the forward gear of the device is fastened axially,– a channel (8) in the housing (1) of the annular space (7) and the atmosphere and a relative to the housing (1) axially movable, with a compression spring (15) of spring-loaded slide bushing (10), which is provided at its end face (28) with the inner surface (31) of the housing (1) an annular chamber..