摘要:
An arresting brake device with triggering equipment for elevators provides different braking effect in upward and downward directions of travel. The device includes a tiltable rocker, as a barrier element, provided with an articulated two-point bearing in yielding joint pans. The rocker is operatively connected with a movable brake shoe and is, on actuation by triggering equipment, tilted by entraining members up to an abutment beyond or ahead of its dead center according to the direction of travel of an elevator car in upward or downward directions. By the tilting movement, one or the other yielding joint pan is pushed against a biased adjustable compression spring and the movable brake shoe and a fixed brake shoe are accordingly urged against a guide rail. The compression springs, which are arranged in a spring block, can each be biased separately in a variable manner by a respective setting screw.
摘要:
An elevator installation has an elevator car that moves in a vertical direction along guide tracks and is braked or held at standstill by a braking equipment. The braking equipment includes at least two brake units, at least one of the brake units, but preferably each of the brake units, is provided with a wear-compensating device which, when the brake unit is opened or released, sets a clearance distance between a brake lining and an associated brake surface, which clearance arises on opening of the brake unit, in correspondence with a substantially constant value. Thereby, use may be made of customary and thus economic brake materials which may wear during braking.