JPS6417788A - Method of exchange construction of main cable for elevator - Google Patents

Abstract

PURPOSE: To direct a main rope moving direction in one direction and to improve working efficiency and safety by paying out a new main rope, adjusting tensile force from a main rope paying out machine, and winding an old main rope connected with this new main rope by a main rope winding machine. CONSTITUTION: A car 6 is stopped and fixed on the lower part of an uppermost floor, an old main rope 5A on the side of a balanced weight 8 is fixed in the vicinity of the upper part of the car 6 and is cut at the upper part, and the side of the car 6 is cut on the upper part of the car 6. Subsequently, this cut part is connected with a tip of a new main rope 5B paid out of a main rope paying out machine 29 installed on the uppermost floor, tensile force of both the main ropes is detected by a tensile force detecting device 31, the new main rope 5B is lifted to a machine chamber 2 together with the old main rope 5A, adjusting braking force of the main rope paying out machine 29, both the ropes 5A, 5B are wound on a driving net wheel 3 and a deflector vehicle 4 and the old main rope 5A is removed. Next, after the new main rope 5B is put down within an elevating and lowering path 1 and is connected with an upper end of the old main rope 5A on the side of the balanced weight 8, the fixing of the old main rope 5A is released and the old main rope 5A is wound by a main rope winding machine 32 installed on a lower floor, the new main rope 5B is coupled with the car 6 and the balanced weight 8. Thus, a work can be efficiently and safely performed.