Abgedichtete drehbare Verbindungsvorrichtung die Bewegungen erlaubt

摘要

An internal tube (1) penetrates an outer tube (14) which rotate relative to each other. The connection comprises a collar (16) arranged in the annular space between the two tubes. An annular sealing joint (19) integral with the collar is arranged between it and the inner tube. A second annular joint (23) is arranged between two opposite walls (22,18) of the collar and the outer tube, both joints being perpendicular to the rotational axis. An annular plate (24) and a spring (26) apply the two walls against with an adjustable force. This connection allows significant movements between the two tubes both radially and longitudinally.