Propulsion tube connection for underground shield drive

摘要

The height of the pressure ring (6) is greater than the space between the ring surface (2) of the muff part (9) of the propulsion tube (1) and the face surface of the covering-free front section (7) of the inner tube (1) of the following propulsion tube (11). The pressure ring has an inner dia. which is slightly greater than the outer dia. of the covering-free section (7) of the inner tube (1) and an outer dia. which corresponds to the outer dia. of the propulsion tubes (10,11).In the muff part (9) of the front propulsion tube (10) between its inner wall side and the outside of the inner tube of the following propulsion tube a sealing component (13) is arranged. The cover tube (4) at the front end of the propulsion tube is shorter than the cover filling (5) and at the rear end is longer than the muff part (9) of the inner tube (1) and the opposing cover filling (5).