Abstract: Stall condition in an elevator is potentially dangerous situation if it causes slack to the ropes of the elevator. In such situation a counterweight or elevator car does not move even if the hoisting machine is still operating. This situation may be prevented by stopping the elevator as early as possible after detecting such stall condition. The detection of the stall condition is based on monitoring the torque generated by the hoisting machine of the elevator. When rapid change in the torque is detected a stall condition is suspected. The elevator may be stopped or an alarm may be launched when the stall condition is suspected.

Abstract: Stall condition in an elevator is potentially dangerous situation if it causes slack to the ropes of the elevator. In such situation a counterweight or elevator car does not move even if the hoisting machine is still operating. This situation may be prevented by stopping the elevator as early as possible after detecting such stall condition. The detection of the stall condition is based on monitoring the torque generated by the hoisting machine of the elevator. When rapid change in the torque is detected a stall condition is suspected. The elevator may be stopped or an alarm may be launched when the stall condition is suspected.

Abstract: Equipment is provided for joining elevator guide rails, for connecting consecutive guide rails of an elevator to each other, which equipment includes a fish plate, which fish plate is an elongated angle plate profile piece including a plurality of plate sections that are beside each other and in the length direction of the fish plate, and longitudinal bends between the plate sections that are beside each other, and which plate section plurality including a planar support plate section, against which support plate section the rear sides of the ends of consecutive guide rails can be supported to lean, and which plate section plurality also includes stiffening plate sections bent away from the plane of the support plate section. A joint arrangement is provided for the guide rails of an elevator and an elevator, in which arrangement and elevator the joining equipment is used.