| 摘要 |
The braking device comprises a base body (2) associable with the chassis of a towing vehicle; a trailer-brake valve (10) able to adjust the pressure along a control line (7) and along an additional line (11); first command means (3) associable at least with the parking brake of the towing vehicle and activatable to operate the same; second command means (5) operatively connected to said trailer-brake valve (10) and activatable to send a working fluid under pressure along said control line (7); a lever (12) comprising at least a first portion (12a) hinged to said body (2) around a first axis (X), associated with said first command means (3) and movable between a rest position and at least a braking position, and at least a second portion (12b), graspable by an operator, hinged to said first portion (12a) around a second axis (Y), associated with said second command means (5) and movable between a rest position and at least a braking position; third command means (20) operatively connected to said trailer-brake valve (10) and operable between an active position and an inactive position; first and second activation means (25, 26) each movable between a relative first and a relative second work position, in which they activate and deactivate, respectively said third command means (20), and where manual means (28) are provided operable by an operator to move said second activation means (26) from the second to the first work position. |
