JP5334026B2 - How to hang an elevator rope - Google Patents

Description

  Embodiments of the present invention relate to an elevator rope hanging method in which a suspension support rope is wound around each sheave of a car, a counterweight and a hoisting machine in a hoistway.

  When a rope for lifting an elevator is routed around a car, counterweight and hoisting machine in the hoistway, the rope bundle is conventionally attached to the elevator hall on the uppermost floor outside the hoistway. Were temporarily placed in the hoistway while being sequentially unwound, wrapped around the sheaves of each device described above, and the end portions were attached to predetermined rope fixing brackets. If the rope is pre-wound around a steel or resin drum, temporarily place the drum in the elevator hall so that it can be rotated using a dedicated stand, etc., and feed the rope out of this drum. In the same manner, the rope-hanging operation was performed (see, for example, Patent Document 1).

  However, in the conventional method described above, the rope must be temporarily placed in the elevator hall, and during installation work, it occupies a shared space with other contractors, which causes inconvenience. In addition, when the rope is wound around the hoistway, the worker must leave the place where the rope is installed. For this reason, it was not possible to cope with any change in the bundle of ropes installed in front of the hall, such as a change in the speed at which the rope can be unwound and contact with an obstacle.

  Therefore, by the applicant, the rope unwinding place on the gondola for installation work or on the passenger car, all the ropes in the rope hanging work are put in the hoistway, and placed in a range that can be seen by the worker, There has been proposed an elevator rope-hanging method capable of immediately responding to a change (see Patent Document 2).

JP 2008-308248 A JP 2011-20805 A

  As described above, the rope hanging method proposed by the present applicant stores all the ropes being roped in the hoistway and places them in a range that can be visually recognized by the worker, so that the rope hanging work is facilitated. At the same time, all the ropes that are being roped are housed in the hoistway and placed in a range that can be visually recognized by the operator, so that even when a change occurs, the rope can be dealt with immediately and has a feature. However, in this method, when the rope is wound around the hoisting machine sheave, the rope is not formed by being wound around the end of the rope, but the rope is formed in a U-shape and the U-shaped portion is wound around the hoisting machine sheave. There is a restriction that U-shaped must be done. If there is such a restriction, it may be difficult to wind the rope depending on the arrangement configuration of the equipment.

  The problem to be solved by the present invention is to provide an elevator rope hooking method capable of easily performing the rope winding work in the hoistway without being restricted by the rope winding around the sheave.

  In the elevator rope hanging method according to the embodiment of the present invention, the rope having one end fixed to the first rope hitch at the upper part of the hoistway is wound around the underfloor sheave from one side of the car in the hoistway, Derived to the other side of the car, wound around a hoisting machine sheave at the upper part of the hoistway, and further wound around a sheave of a counterweight in the hoistway, the other end is a second of the upper part in the hoistway. An elevator rope method for winding a rope so as to be fixed to a rope hitch, wherein a work gondola having a rope drum placed on the upper surface and an underfloor sheave of the car on the lower surface is connected to the hoistway A hoisting machine sheave, and a rope drum provided on the gondola in the ascending position, and the rope is fed upward from the side facing the one side of the car. After winding, the step of locking the tip of the rope to the gondola, the step of lowering the gondola to the lower part in the hoistway with the tip of the rope locked, and the position of the rope at the lower position After removing the tip from the gondola and winding it around the sheave of the counterweight at this lower position, the step of locking the tip to the gondola again, and the rope drum on the gondola at this lower position, the rope Reversing the unwinding side to be the other side of the car and unwinding the rope from the rope drum for a predetermined length, and loosening the rope drum on the gondola, the rope unwinding side of the original A reverse sheave of the car that is attached to the lower surface of the gondola. A step of winding, raising the gondola to the upper part in the hoistway, removing the tip of the rope locked to the gondola from the gondola and fixing it to the second rope hitch, and the base end of the rope Separating from the rope drum and fixing to the first rope hitch.

It is a figure explaining the rope hooking method of the elevator which concerns on one embodiment of this invention. It is a figure which shows the elevator apparatus with which the rope was hung by the rope hanging method of the elevator which concerns on one embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 2, the elevator rope hanging method according to this embodiment is finally applied to the underfloor sheave 12 of the car 11, the hoisting machine sheave 13, and the hanging sheave 15 of the counterweight 14. 16 is a method of winding 16.

  That is, in the elevator apparatus, a first rope hitch 22 is provided on an upper part of a hoistway 21 of a building (not shown), and one end of the rope 16 is fixed to the rope hitch 22. In the hoistway 21, a car 11 and a counterweight 12 are guided and supported by guide rails (not shown) so as to be raised and lowered. The rope 16, one end of which is fixed to the rope hitch 22, is wound around the under-floor sheave 12 from one side surface (the left side surface in the drawing) of the car 11, led out to the other side surface (the right side surface in the drawing), and the hoistway It is wound around a hoisting machine sheave 13 provided at the upper part of 21. The rope 16 is further wound around the sheave 15 of the counterweight 14 in the hoistway 21, and the other end is wound so as to be fixed to a second rope hitch 23 provided in the upper part of the hoistway 21. It is hung.

  A method of winding the rope 16 around such a configuration will be described with reference to FIG. In this method, a working gondola 25 is used. The gondola 25 is configured so as to be arbitrarily lifted and lowered in the hoistway 21 by a construction lifting machine (not shown). Further, the gondola 25 has a rope drum 26 placed on the upper surface thereof, and a car floor underfloor sheave 12 attached to the lower surface. The rope drum 26 is wound around a rope 16 for suspension support, and is supported rotatably so that the rope 16 can be drawn out upward in the figure. The rope drum 26 is supported so that the feeding side can be arbitrarily changed from the left side to the right side in the drawing and from the right side to the left side. The underfloor sheave 12 is integrally attached to the lower surface of the gondola 25 together with the floor member 11a of the car 11 that rotatably supports the sheave 12.

  Hereinafter, the method of winding the rope 16 will be described for each process.

  Step A: As described above, the work gondola 26 in which the rope drum 26 is placed on the upper surface and the under-floor sheave 12 of the car 11 is attached to the lower surface is raised to the upper part in the hoistway 21 by a lifting machine (not shown). , Located near the hoist sheave 13.

  Step B: The rope 16 is fed upward from the left side of the rope drum 26 provided on the gondola 25 in the raised position, that is, the side facing the one side surface (left side surface shown in the drawing) of the car 11, and its tip is Wrap around the hoisting machine sheave 13. Thereafter, the tip of the rope 16 is locked to the left side of the gondola 25 in the figure.

  Step C: With the tip of the rope 16 locked, the gondola 25 is lowered to the lower part in the hoistway 21 by the lifting machine and is located near the counterweight 14 located at the lower part of the hoistway 21.

  Step D: At the lower position in the hoistway 21, the tip of the rope 16 is removed from the gondola 25 and wrapped around the sheave 15 of the counterweight 14 at the lower position as shown in the figure. Thereafter, the tip of the rope 16 is locked to the gondola 25 again.

  Step E: At the lower position in the hoistway 21, the rope drum 26 on the gondola 25 has an arrow a so that the rope feeding side is the right side in the figure, that is, the other side (right side in the figure) side of the car 11. Invert in the direction. In this state, the rope 16 is drawn out from the rope drum 26 and is loosened as shown in the figure. The length to be loosened is a length necessary for winding the under-floor sheave 12 to be described later.

  Step F: The rope drum 26 on the gondola 25 is returned and reversed in the direction of the arrow b so that the rope feeding side is the original left side in the drawing, that is, one side surface (left side surface in the drawing) side of the car 11. By this operation, the unwinding side of the rope 16 from the rope drum 26 moves to the left side in the figure, so that the loosened portion of the rope 16 is wound around the underfloor sheave 12 attached to the lower surface of the gondola 25 as shown in the figure. . Further, by reversing and reversing the rope drum 26 in the direction of the arrow b, the twist generated in the rope 16 due to the reversal of the rope drum 26 in the direction of the arrow a in the above-described step E can be restored and eliminated. .

  Step G: The gondola 25 that locks the tip of the rope 16 is raised again to the upper part in the hoistway 21. At the raised position, the tip of the rope 16 locked to the gondola 25 is removed from the gondola 25 and fixed to the second rope hitch 23. Further, the base end side of the rope 16 is separated from the rope drum and fixed to the first rope hitch 22.

  By carrying out the steps A to G described above, one end of the rope 16 shown in FIG. 2 is fixed to the first rope hitch 22 and wound around the under-floor sheave 12 of the car 11, and then wound up. After being wound around the machine sheave 13 and further wound around the sheave 15 of the counterweight 14, the other end is fixed to the second rope hitch 23.

  Here, when the rope 16 wound around the hoisting machine sheave 13 moves largely as in the steps B to C, the hoisting machine sheave 13 is idled so that the rope 16 can be moved. It is necessary to let In such a case, it is only necessary to energize the brake circuit of the hoisting machine to release the brake, or to make the hoisting machine sheave 13 rotatable with a dedicated opening tool.

  In the above description, the number of the ropes 16 to be wound is not particularly described. However, since the main rope of the elevator is generally composed of a plurality of ropes, the rope hanging work in the above steps A to G is 1 It can be done one by one, or several can be done together. When winding a plurality of ropes together, a plurality of rope drums 26 may be placed on the gondola 25, and the operations of Steps A to G may be performed while feeding the ropes from them.

  2 is lifted and lowered based on the flooring 11a provided with the underfloor sheave 12 after the gondola 25 is removed from the hoistway 21 after the rope hanging in the above-described steps A to G. Assemble in the road 21.

  As described above, in the rope hooking method of the elevator according to the above-described embodiment, the rope hooking on the hoisting machine sheave 13 is wound around the hoisting machine sheave 13 from the tip of the rope 16. There is no restriction on the winding, and the winding work at a high place becomes easy and safe, and the working efficiency is improved.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Car 11a ... Floor member 12 ... Underfloor sheave 13 ... Hoisting machine sheave 14 ... Counterweight 15 ... Suspension sheave 16 ... Rope 21 ... Hoistway 22. ..First rope hitch 23 ... Second rope hitch 25 ... Work gondola 26 ... Rope drum

Claims (1)

A rope, one end of which is fixed to the first rope hitch at the upper part of the hoistway, is wound around the underfloor sheave from one side of the car in the hoistway, led to the other side of the car, and wound at the upper part of the hoistway. An elevator that wraps a rope so that the other end is fixed to the second rope hitch in the upper part of the hoistway after being wrapped around the sheave of the counterweight in the hoistway. A rope hanging method,
A step of raising a work gondola having a rope drum placed on the upper surface and an underfloor sheave on the lower surface attached to the lower surface of the hoistway;
The rope drum provided on the gondola at the raised position is fed upward from the opposite side of the car to the one side, wound around the hoist sheave, and then its tip is attached to the gondola. A locking step;
Lowering the gondola to the lower part in the hoistway with the tip of the rope locked;
Removing the tip of the rope from the gondola at this lower position, wrapping the sheave of the counterweight at the lower position, and then locking the tip to the gondola again;
Reversing the rope drum on the gondola at the lower position so that the rope feeding side is the other side of the car and feeding the rope from the rope drum a predetermined length to loosen the rope drum;
The rope drum on the gondola is returned and reversed so that the rope feeding side is one side of the original car, and the slackened rope is attached to the underside sheave of the car attached to the lower surface of the gondola. And the process of wrapping around
The gondola is raised to the upper part in the hoistway, the tip of the rope locked to the gondola is removed from the gondola and fixed to the second rope hitch, and the base end of the rope is taken from the rope drum. Separating and fixing to the first rope hitch;
An elevator rope hanging method.

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