| 摘要 |
Brake for large doors, constituted by two side plates (1,2), separated by a central core (3) provided with two parallel conduits, one of which (11), ends opposite to the axle (4) from which the large door is suspended, which is mounted in two oblong openings (16) and on which the braking pawl (5) acts, the other conduit (11a) serving for the axially displaceable trajectory of a rod (14) which is capable of acting directly on the braking pawl (5) and which is capable of being activated manually once the trigger (18) which acts as safety device and is loaded with a spring (20), has been removed. <IMAGE> |
