| 摘要 |
A disc-brake unit (10) for vehicles on rails, comprising a brake pincer consisting of a pair of jaws (14), provided with relative friction gaskets (16), intended to rub on the two opposite surfaces of a disc (12). The jaws (14) are hinged at one of the ends of a pair of levers (18). The levers (18) are pivoted on respective hinges (20) fixedly connected to the main body of the braking unit (10), and are actuated by a braking force motor (22) provided with at least one first piston (26) that moves with alternate motion along an axis (A). The braking unit (10) also comprises a group (68) for automatically regulating the clearances between the friction gaskets (16) and the disc (12). The piston (26) transmits the braking force to a thrusting mechanism (48; 48′) inserted inside the braking force motor (22) to amplify and transfer the force, through the group (68) for automatically regulating the clearances and along an axis (B) perpendicular to the axis (A), to the ends of the levers (18) opposite the ends on which the jaws (14) are hinged. |
| 主权项 |
1. Disc-brake unit (10) for vehicles on rails, comprising a brake pincer consisting of a pair of jaws (14), provided with relative friction gaskets (16), intended to rub on the two opposite surfaces of a disc (12), said jaws (14) being hinged at one of the ends of a pair of levers (18), said levers (18) being pivoted on respective hinges (20) fixedly connected to the main body of said braking unit (10), and being actuated by a braking force motor (22) provided with at least one first piston (26) that moves with alternate motion along a first axis (A), said braking unit (10) also comprising a group (68) for automatically regulating the clearances between said friction gaskets (16) and said disc (12), characterised in that said piston (26) transmits said braking force to a thrusting mechanism (48; 48′) to amplify and transfer said braking force to said group (68) for automatically regulating the clearances, and said group (68) for automatically regulating the clearances transmitting said braking force along a second axis (B) perpendicular to said first axis (A) to the ends of said levers (18) opposite the ends on which the jaws (14) are hinged, wherein said group (68) for automatically regulating the clearances lies along the second axis (B) and comprises two clearance regulating mechanisms (70), positioned symmetrically with respect to said first axis (A) and operated along said second axis (B); and
wherein each clearance regulating mechanism (70) comprises, in the portion facing towards said first axis A respective opposite locking bushes 8284 and said locking bushes (82, 84) are interconnected by means of a regulation screw (86). |
