GOVERNOR ROPE VIBRATION PREVENTION DEVICE FOR ELEVATOR

摘要

PROBLEM TO BE SOLVED: To prevent vibration of a governor rope by providing an earthquake detection part and a frame which is provided in a hoistway, moves to the side of a governor rope, when an earthquake is detected by the earthquake detector, and surrounds the governor rope. ;SOLUTION: A frame 11 is rotatably attached to a wall part of a hoistway 1 via a spring hinge 12 for attachment. An electromagnet 13 is provided on the wall part of the hoistway 1 so as to attract the frame 11. When an earthquake occurs and excitation of the electromagnet 13 is released by a control part 16 based on a detection signal of an earthquake detection part 15, the frame 11 is rotated by the spring force of the spring hinge 12 for attachment. On the way of its rotating, a stopper 11c is pushed by a governor rope 4 so as to rotate inward of the frame main body 11a, however, when the governor rope 4 enters completely inside the frame main body 11a, it is returned to its original place by the spring force of the spring hinge 11b for stopper. The part of the governor rope 4 connected to a car 2 is thus surrounded with the frame 11 from the four sides.;COPYRIGHT: (C)1997,JPO