JPH07252052A - Main rope changing method of elevator - Google Patents

Abstract

PURPOSE:To reduce the extent of labor required for changing work by making tools to be used lighter weight without recourse to the overall height of a hoistway, and reducing the lifting dead weight of a main rope. CONSTITUTION:A car 6 and a balance weight 7 are situated in an inermediate floor each, and this car 6 is lifted from a rope clamp 11 locked to a part of a main rope 5, loosening another main rope 5 to some extent, and with this state intact, this loosened main rope 5 is transferred to a rope guide 16 for replacement, while a new rope 13 is connected to it, and further each position of both new and old ropes is made so as to be replaced by guidance of the rope guide 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of replacing a main rope of an elevator in which a car and a counterweight are suspended by a plurality of main ropes, and more particularly to labor saving of the replacement work.

[0002]

2. Description of the Related Art FIG. 14 is a block diagram for explaining an example of a conventional method of replacing a main rope of an elevator. This elevator is of a 1: 1 roping type. In the figure, 1 is a hoistway, 2 is a machine room above the hoistway 1, 3 is a hoisting sheave of a hoisting machine installed in the machine room 2, 4 is a deflecting wheel installed in the machine room 2, and 5 is The main rope wound around the hoisting sheave 3 and the deflecting wheel 4, 6 is a basket suspended at one end of the main rope 5, 7 is a counterweight suspended at the other end of the main rope 5, 8 Is a landing.

Next, a conventional method of replacing the main rope 5 will be described. First, the counterweight 7 is positioned at the bottom of the hoistway 1, and the car 6 is lifted by the chain block 9 that is lowered from the machine room 2 to loosen the main rope 5. Thereafter, the winch rope 10a is lowered from the winch 10 installed in the machine room 2 into the hoistway 1, the main rope 5 is removed from the counterweight 7, and the winch rope 10a is connected to the winch rope 10a. Then, the main rope 5 on the counterweight 7 side is pulled up by the winch 10. At this time, be careful not to hit the winch rope 10 against the equipment or the like in the hoistway 1, and the operator rolls the main rope 5 wound up by hand. in this way,
After winding up the portion of the counterweight 7 side, the main rope 5 is also removed from the car 6, and the portion of the main rope 5 on the car 6 side is pulled up by hand.

After repeating the above operation for the number of main ropes 5, the new main rope is unloaded from the side of the car 6 while returning the twist, and its end is connected to the car 6. Next, the part of the new main rope on the counterweight 7 side is hung while being suspended by the winch 10, and its end is connected to the counterweight 7. After repeating this work for the number of new main ropes,
The replacement work is completed by removing the chain block 9.

[0005]

In the conventional method of replacing the main rope 5 as described above, if the overall height S of the hoistway 1 is large, the winch rope 10a becomes long and the winch 1
Since the weight of 0 is also heavy, there is a problem that a great deal of labor is required for loading and unloading work into and from the machine room 2.

The present invention has been made to solve the above problems, and it is a main purpose of an elevator which can reduce the weight of jigs and tools used and thereby reduce labor. The purpose is to get a rope replacement method.

[0007]

According to a method of replacing a main rope of an elevator according to the present invention, a car and a counterweight are respectively located on an intermediate floor, and at least one main rope of a plurality of main ropes is provided. A process of fixing the rope clamp and lifting a car or counterweight from this rope clamp,
At least one of the remaining main ropes,
A process of hooking the rope guide device installed on the hoisting machine, removing both ends of the main rope hung on the rope guide device from the car and the counterweight, and connecting a new main rope to one end After the main rope hung on the guide device is moved by the guide of the rope guide device, the old main rope is separated from the new main rope, and both ends of the new main rope are connected to the car and the counterweight.

[0008]

In the present invention, since the car and the counterweight are located on the intermediate floor and the main rope is pulled up, the pulling weight of the main rope is greatly reduced, and a simple rope guide device is used without using a winch. In order to finish, carry in jigs and tools
Easy to carry out.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram for explaining a method of replacing a main rope of an elevator according to an embodiment of the present invention.
The same or corresponding parts are designated by the same reference numerals, and the description thereof will be omitted.

In the method of this embodiment, first, the car 6 and the counterweight 7 are moved to positions such that their upper surfaces are substantially the same. As a result, the pulling weight of the main rope 5 is halved. Next, assuming that there are four main ropes 5, for example, the rope clamps 11 are fixed to two of them. Then, as shown in FIG. 2, the cage 6 is connected from the rope clamp 11 to the chain block 12.
Hoist. As a result, the remaining two main ropes 5 to which the rope clamp 11 is not fixed are loosened.

On the other hand, in the landing 8 near the upper surfaces of the car 6 and the counterweight 7, a rope winding base 14 around which a new main rope 13 is wound and a rope winding base 15 around which the old main rope 5 is wound up. And carry in and set up. Then, both ends 5a and 5b of the main rope 5 in which the above-mentioned slackness has occurred are removed from the car 6 and the counterweight 7, and one end 5a is removed from the rope winding base 15
And connect the other end 5b to the new main rope 13
Is connected to one end 13a.

After that, the main rope 5 to be replaced is hung over the pair of rope guide devices 16 attached to the ceiling portion 2a of the machine room 2. FIG. 1 shows the state at this time. Next, while the new main rope 13 is being fed from the rope winding base 14, the old main rope 5 is wound by the rope winding base 15. As a result, the old and new main ropes 5 and 13 move under the guidance of the rope guide device 16.
After winding the old main rope 5, the new main rope 13
Disconnect the connection with. And the new main rope 13
Is removed from the rope guide device 16 and wound around the hoisting sheave 3 and the deflecting wheel 4. After this, the new main rope 1
Connect the terminal of 3 to the car 6 and the counterweight 7.

The replacement work is completed by repeating such work for the number of main ropes 5. In this embodiment, after the two main ropes 5 to which the rope clamps 11 are not fixed are replaced, the rope clamps 11 are reattached to the two new main ropes 13 that have been replaced, and the remaining two main ropes 5 are replaced. The main rope 5 should be replaced. After the above work is completed, the rope clamp 11, the chain block 12, the rope winding bases 14 and 15, and the rope guide device 16 are removed.

According to the above main rope replacement method,
The winch 10, which was required in the past, is no longer required. Therefore, even if the hoistway 1 has a large overall height, it is not necessary to carry in heavy objects, and the jigs are lighter than the conventional ones, that is, the rope clamp 11 and the chain block 12. , Rope winding stand 14,
Since it suffices to carry in 15 and the rope guide device 16, the labor for the work is significantly reduced, and the main rope 5 can be replaced by three workers. Further, since the car 6 and the counterweight 7 are located on the intermediate floor for the replacement work, the weight of the main ropes 5 and 13 to be pulled up is reduced, which also reduces the labor of the work.

Here, FIG. 3 shows the rope guide device 16 of FIG.
4 is a front view of the apparatus of FIG. 3. In the figure, 21 is a hanging metal fitting, 22 is a hanging metal fitting 21.
A pulley mounting plate rotatably mounted on the shaft 23 is a shaft 24.
Is a pulley attached to the pulley attachment plate 22 so as to be rotatable about the center, 25 is a bearing for holding the shaft 24 rotatably, 2
Reference numeral 6 denotes an opening / closing plate rotatably attached to the pulley mounting plate 22 about a fulcrum 26a, and 27 is a claw attached to the opening / closing plate 26 rotatably about a fulcrum 27a.

In such a rope guiding device 16, the claw 2
By rotating 7 in the direction of the arrow in FIG. 4, it becomes possible to rotate the opening / closing plate 26 to open it as shown in FIG. As a result, the old main rope 5 is pulley 23
The new main rope 13 can be removed from the pulley 23. Further, during the work, the opening / closing plate 26 is locked by the claw 27 to prevent the main locks 5 and 13 from being disengaged.

Next, FIG. 6 is a side view showing an example of a sulcan (returned) used when connecting the old and new main ropes 5 and 13, and FIG. 7 is a view showing the sulcan of FIG.
It is a side view showing the state where 13 was connected. In the figure,
Reference numeral 31 is a sulcan having connecting ring portions 31a and 31b rotatable relative to each other.

By connecting the old and new main ropes 5 and 13 using such a sulcan 31, the twist of each main rope 5 and 13 during the replacement work is naturally held.

Further, FIG. 8 is a structural view showing a state in which the main rope 5 is changed from the deflecting wheel 4 to one of the rope guide devices 16, and FIG. 9 shows the main rope 5 of FIG. 8 from the hoisting sheave 3 to the other one. It is a block diagram which shows the state when changing over to the rope guide apparatus 16. In the figure, reference numeral 32 is a rope descending stopper provided between the machine base in the machine room 2 and the main rope 5.

By using such a rope descent stop 32, the weight of the main rope 5 at the time of re-hanging becomes half, and the work of re-hanging becomes easy.

Further, FIG. 10 shows the rope winding base 1 of FIG.
FIG. 11 is a plan view of FIG. 10, and FIG. 12 is a configuration diagram showing a positional relationship between the rope winding bases 14 and 15. In the figure, 41 is a lower plate installed on the floor of the hall 8, 42 is a fixed shaft standing upright in the central portion of the lower plate 41, 43 is arranged facing the lower plate 41, and the fixed shaft 4
2 is a rotatable upper plate, 44 is the upper plate 43 and the fixed shaft 4
Bearings 45 provided between the upper and lower plates 43 and 45 are fixed to the lower surface of the upper plate 43 and roll on the lower plate 41 when the upper plate 43 rotates.

When such rope winding bases 14 and 15 are used, the old main rope 5 and the new main rope 13 can be easily wound by rotating the upper plate 43.

In the above embodiment, the rope guide device 16
Although the above is provided on the ceiling portion 2a of the machine room 2, for example, as shown in FIG. 13, a frame body 51 may be assembled in the machine room 2 and the rope guide device 16 may be attached to the frame body 51. The frame body 51 may have a torii shape or a horse shape, for example.

By using such a frame 51,
Since the support portion of the ceiling portion 2a is unnecessary, it is possible to cope with all situations of the machine room 2.

In the above embodiment, the case where the number of main ropes 5 is four has been described, but any number of ropes may be used as long as it is two or more. Further, in the above embodiment, the case where all the main ropes 5 are replaced has been described, but the present invention can be applied to the case where only a part of the deteriorated main ropes 5 is replaced.

Furthermore, the jigs and tools shown in FIGS. 3 to 12 are examples, and other tools may be used as long as the method of the present invention can be carried out. Further, although the rope clamp 11 is provided on the car side and the car 6 is hoisted in the above embodiment, the rope clamp 11 may be provided on the counterweight 7 side to hoist the counterweight 7 depending on the case.

[0027]

As described above, according to the elevator main rope replacement method of the present invention, the car and the counterweight are located on the intermediate floors respectively, and the rope clamps fixed to some of the main ropes are used for the car or fishing. Lift the weight to loosen the other main ropes, hang the loose main rope on the rope guide device, connect a new rope, and replace the old and new main rope positions with the guide of the rope guide device. As a result, it is possible to reduce the weight of jigs and tools used, and to reduce the weight of the main rope pulled up, regardless of the overall height of the hoistway.As a result, the labor required for replacement work is greatly reduced. The effect that it can be reduced to.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining a method of replacing a main rope of an elevator according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a state in which the car of FIG. 1 is suspended by a chain block.

FIG. 3 is a cross-sectional view showing an example of the rope guide device of FIG.

FIG. 4 is a front view of the device of FIG.

5 is a front view showing a state where the opening / closing plate of FIG. 4 is opened.

FIG. 6 is a side view showing an example of a sulcan used when connecting old and new main ropes.

FIG. 7 is a side view showing a state in which old and new main ropes are connected to the salcan of FIG.

FIG. 8 is a configuration diagram showing a state in which the main rope is changed from the deflecting vehicle to one of the rope guide devices.

FIG. 9 is a configuration diagram showing a state in which the main rope of FIG. 8 is changed from the hoisting sheave to the other rope guide device.

FIG. 10 is a cross-sectional view showing an example of the rope winding stand of FIG.

11 is a plan view of FIG.

FIG. 12 is a configuration diagram showing a positional relationship between rope winding bases.

FIG. 13 is a configuration diagram of a machine room for explaining a method of replacing a main rope of an elevator according to another embodiment of the present invention.

FIG. 14 is a configuration diagram for explaining an example of a conventional main rope replacement method for an elevator.

[Explanation of symbols]

 5 Main rope 6 Basket 7 Counterweight 11 Rope clamp 13 New main rope 16 Rope guide device

Claims (1)

[Claims] 1. A car and a counterweight are respectively located on an intermediate floor, and a rope clamp is fixed to at least one main rope of a plurality of main ropes, and the car or the counterweight is attached from the rope clamp. Lifting at least one of the remaining main ropes,
A process of hooking the rope guide device installed on the hoisting machine, removing both ends of the main rope hung on the rope guide device from the car and the counterweight, and connecting a new main rope to one end. , And the main rope hung on the rope guide device is moved by the guide of the rope guide device, the old main rope is separated from the new main rope, and both ends of the new main rope are connected to the car and the balance. A method for replacing a main rope of an elevator, comprising the step of connecting to a weight.