JPH04327483A - Replacement of elevator rope and connection thereof - Google Patents

Abstract

PURPOSE:To safely replace an elevator rope replacement work which should be laboriously at a high place, in a short time with less manhours. CONSTITUTION:In order to reduce the diameter of the connection between new and old ropes, two strands are braided, and further, a coupling drum rollers 14 and a tangle preventing device 17 are used. Accordingly, all ropes are replaced with new ones in one batch with the use of a winch, thereby it is possible to enhance the safety of the work and to shorten the time therefor.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing the main rope of an elevator.

0003

[Prior Art] An elevator rope (main rope) that is wound around a hoisting machine 1, suspends an elevator car 2 and its counterweight 3 from both ends, and lifts and lowers the car and counterweight relative to each other. ) If the rope 4 is damaged or malfunctions, it must be replaced with a new rope.

The conventional method of replacing the new and old main ropes will be explained with reference to FIG.

[0005] First, the car 2 is stopped almost at the top floor landing 5, and the counterweight 3 is placed on the weight support 6 at the bottom of the hoistway.

[0006] Replacement main rope (new main rope) on the top floor
A drum 7 is prepared, and a winding drum 9 for the old main rope is prepared on the lowest floor 8.

The car 2 is hoisted with a chain block, the tension on the main rope 4 is removed, and the main rope (old main rope) 4 is cut near the hitch portions 10 and 11 of the car and counterweight.

The new and old main ropes 12 and 4 are tied together with the rope clip 13, the ropes are fed out one by one, and the old main rope 4 is wound around the old main rope winding drum 9.
Replace with new main rope 12.

[0009] At this time, remove any objects (covers, guides, etc.) that may come in contact with the equipment in the machine room and the hoistway when the rope clips 13 binding the old and new main ropes pass through.

0010

[Problems to be Solved by the Invention] Although the new and old ropes are exchanged in this way, the following problems occur at this time.

[0011] When replacing the car with the car in the upper position of the hoistway and the counterweight in the lower position, the upper and lower parts must be worked on simultaneously, increasing the risk of the work.

[0012] When cutting the old rope, the rope hitch portion of the counterweight is located high, making work at heights dangerous.

[0013] Since the old and new ropes are sent out one by one, relying mostly on human power, a considerable amount of labor and time is required.

[0014] Since the binding portions of the old and new main ropes come into contact with or collide with each equipment and become an obstacle, it is necessary to remove the obstacles (covers, guides, etc.).

An object of the present invention is to improve the safety and shorten the work time of such main rope replacement work.

[Configuration of the invention]

[0017]

[Means for solving the problem] Place the basket and counterweight at approximately the same position, place the old rope winding drum and the new rope drum on the floor corresponding to that position, cut the old rope, and cut both ends of the drum. Connect to the old winding drum and the new rope of the new rope drum, respectively.

[0018] Rotate the hoist, remove the old rope, and replace it with the new rope pulled out. At this time, all the old and new ropes are connected and all the ropes are replaced at once.

[0019]

[Function] There is no upper or lower working position, and most of the rope replacement work is done by motors, which increases work safety and shortens work time. Additionally, since the way the old and new ropes were connected was changed, there was no need to remove obstacles in the hoistway, which shortened work time.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained based on the embodiments shown in FIGS. 1 to 5.

In FIG. 1, the car 2 and the counterweight 3 are placed at the same position (crossing each other) in the hoistway 15, and each is lifted and fixed using a chain block or the like. By lifting, the tension on the old main rope 4 is released.

The new main rope drum 7 and the old main rope winding drum 9 are installed on the floor 16 where the hoistway car and counterweight are located, and the old main rope 4 is connected to the counterweight hitch section 11.
and cut from the car hitch portion 10.

The prepared new main rope drum 7 is set on the connected drum roller 14 and installed on the floor together with the old main rope winding drum 9, and the main rope entanglement prevention device 17 is set on the car side and the counterweight side. .

As shown in FIG. 3, the tangle preventing device prevents tangles by passing the main rope 12 through the tangle preventing link 18.

A new main rope 12 is connected to the cut old main rope 4 as shown in FIGS. 5a, b, and c.

[0026] Cut the end of the new rope approximately 0.5 m apart, leaving two strands. On the other hand, the end of the old rope is approximately 0
, remove two strands of 5 m length, wrap the two strands of the new rope therein, wrap a bind wire around them to secure them, and wrap them with shrink tape.

[0027] In this way, the new and old ropes are connected. In this way, the cross section (diameter) of the connecting portion does not need to be large. In other words, since the old and new ropes are dimensionally one rope, it is possible to use a method different from the conventional method for exchanging the old and new ropes as described below.

[0028] The hoisting machine 1 is operated at low speed, and the new main rope 1 is
2 from the new main rope drum while pulling out the old main rope 4.
is sent out and wound around the old main rope winding drum 9, the new main rope 12 and the old main rope 4 are replaced, the new main rope is connected to the counterweight hitch part 11, and then the new main rope 12 is connected to the car side hitch part 10. Connect the ropes and complete the rope replacement work.

[0029] In this way, the rope replacement work can be done in a short time without requiring many hands.

[0030]

[Effects of the Invention] The present invention provides a new method of connecting old and new ropes, and by exchanging the old and new ropes at the intermediate floor, the main ropes on the car side and the counterweight side are not pulled unbalanced.
In addition, by rotating the winding machine electrically at low speed, and by developing a connected drum roller for new ropes and a main rope entanglement prevention device, it is now possible to replace all main ropes at once during rope replacement work. This improves safety, saves labor, and reduces work time.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of rope replacement work according to the present invention;

[Figure 2]
Similarly, detailed explanation diagram of rope replacement work,

[Fig. 3] Detailed view of part of Fig. 2;

FIG. 4 is a detailed view of a portion of FIG. 2;

FIG. 5 is an explanatory diagram of a rope connection according to the present invention.

FIG. 6 is an explanatory diagram of a conventional rope replacement operation.

[Explanation of symbols]

4 Old master rope 7 New main rope drum 9　Old main rope winding drum 17 Main rope entanglement prevention device

Claims (2)

[Claims] 1. A method for exchanging new and old elevator ropes for connecting an elevator car and its counterweight, according to the following steps: 1. Fix the car and counterweight in the hoistway at approximately the same position. 2. On the floor corresponding to the above position, there is an old rope winding drum,
Install a new rope drum. 3. Cut the old ropes at their respective connection points with the basket and counterweight, and connect one end of all the old ropes to the old rope winding drum, and connect the other ends of all the old ropes to the new rope on the new rope drum. do. 4. The new and old ropes are exchanged by rotating the winding machine and the old rope winding drum, winding the old rope while winding the new rope. 2. A method for connecting two elevator ropes according to the following steps. 1. One end of the rope is cut off, leaving multiple strands of a predetermined length. 2. Remove multiple strands from the other end of the rope by a predetermined length. 3. These two ropes are butted against each other, and the plurality of strands of one rope are wound around the strands of the other.