For a brake caliper are electrohydraulically operable tongs disks brake, in particular for roads web carriage

摘要

A caliper for disc braking systems, particularly for urban trams, includes a floating body (1) carrying a pair of brake pads (8, 9) which cooperate with a rotary disc (2). A piston (14) is moved by hydraulic fluid for service braking, and by springs (25), acting via piston (19) and automatic wear adjustment mechanism (19a, 28, 27, 14a) for parking or emergency braking when hydraulic fluid is released from chamber (21). Automatic wear adjustment only takes place during service braking, and the effect of the springs (25) can be released during parking or emergency braking by retraction off pin (35) manually or by fluid pressure introduced into space (39a) so as to allow the piston (19) and elements (19a, 28) to rotate with threaded element (27) on screw (14a). Auxiliary service braking pistons (16) are provided. IMAGE