| 摘要 |
The load braking device has a brake valve (1) designed as a pressure relay valve, actuatable by a brake control valve by means of a pilot pressure (Cv), which is adjustable in its transmission ratio. The brake valve (1) contains a balance beam (17), which on one side rests on a pivot bearing (19), adjustable by means of a load-dependent pressure (T), on which beam on the other side close to one end, a piston (25), acted upon by the pilot pressure (Cv), and on the other end a piston (27) acted upon by a control pressure (S), act and which balance beam (17) actuates a valve (39), which monitors a brake pressure (C) for a brake cylinder (9). The braking force is reduced by the brake block (33), which can be loaded by the brake cylinder (9), by way of suspension shackles (31) and having been converted into the control pressure (S) in a transducer (29) is fed back to the brake valve (1) as a measuring signal. The load braking device ensures that regardless of variations in the coefficient of friction on the brake block (33), which may be due to different vehicle speeds or load states of the vehicle, a certain, constant braking force is achieved in each braking stage so that predetermined braking distances and smooth braking decelerations of the individual coaches in the train can be adhered to. <IMAGE> |
