| 摘要 |
A viscous braking device (1) is described, comprising: a casing (3) equipped with an internal chamber (5) containing a viscous braking fluid; a braked rotating shaft (7), rotating around a longitudinal rotation axis (R-R) and having a first portion (7a) arranged inside the internal chamber (5) and a second portion (7b) arranged outside the internal chamber (5); a piston (9) sliding inside the internal chamber (5) operatively cooperating with the first portion (7a) by interposing a screw-nut screw coupling adapted to slide the piston (9) along the rotation axis (R-R) along a first direction (D') or a second opposite direction (D") depending on a first rotation direction (V') or a second rotation direction (V") of the shaft (7); the piston (9) is adapted to allow the viscous braking of a rotation of the shaft (7) in the first rotation direction (V') around the rotation axis (R-R) determining, by sliding along the rotation axis (R-R) along the first direction (D'), a compression of the viscous fluid against a compression wall (14) of the internal chamber (5). |
