JPH0262389A - Rope changing method for elevator - Google Patents

Abstract

PURPOSE:To make a rope change performable without entailing any wide space of a motor-driven winch an an elevator hall by setting up a drum rolled with a new rope in a cage and, after the new rope is attached with the cage lifted, then making the existing rope so as to be recovered in utilizing the drum. CONSTITUTION:A cage 3 provided with a drum 12 rolled with a new rope 11 is lifted up to an uppermost floor, a rope part 11a is drawn out of a rescue port 10 as long as the setting length and it is set up in a machine 2, then an intermediate part of the rope 11 is held by a holder 13. Next, a part 11b is drawn out as making the cage 3 go down, making it hang down from the holder 13 along the existing rope 5, and the cage 3 is lifted up to an uppermost position, supporting a balance weight 4 with a cradle 15 at the lower part of an elevator shaft 1, and the cage 3 is lifted and held by a chain block 16 whereby the rope 5 is made into nontensility, and its intermediate part is cut off, then this cut part and the part 11a of the rope 11 are connected to each other by a connecting part B. Next, a cage side end of the rope 5 is removed and attached to the drum 12 for winding it, and the rope 11 is laid over a pulley 7 and a sheave 6, pulling the cage 3 nearer and separating it at the connecting part B, and attached to a metal fitting 8, thus the rope 5 is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an elevator rope replacement method, and more particularly to an elevator rope replacement method suitable for replacing ropes in high-lift elevators and the like.

<Prior art> Conventionally, in an elevator, for example,
As described in Publication No. 43, an electric winch etc. is installed on the top floor and the required number of drums on which newly installed ropes are wound are installed on the bottom floor, and the newly installed ropes are pulled out from these drums. Then, rewind and cut the new rope to the required length, tie one end of this new rope to the hoisting rope of the electric winch mentioned above, and attach it to the counterweight pulley located on the lowest floor. The hoisting machine is hung and hoisted, attached to the mounting bracket provided on the counterweight, and then the other end of the newly installed rope mentioned above is tied to the hoisting rope of the electric winch and hoisted to the top floor, and the hoisting machine is installed in the machine room. The sheave of the sheave, the pulley of the deflection wheel, and one rope of the car held at the top floor position are temporarily fixed to the mounting bracket provided on the car, and then the newly installed ropes of the other drums are sequentially connected in the same way. A rope replacement method has been proposed in which the rope is rotated and its tip is secured to the car's mounting bracket.

<Problems to be Solved by the Invention> By the way, the conventional elevator rope replacement method as described above not only requires an electric winch, but also
Problems include the need for troublesome preparation work such as installing and removing ropes and securing power supplies, and work is also carried out in the elevator hall to handle the ropes, which poses concerns about blocking the passage of third parties through the elevator hall and causing personal injury. was there.

The present invention has been made in view of the actual situation in the prior art, and its purpose is to provide an elevator rope that can be replaced safely and quickly without requiring an electric winch or a large work area in the elevator hall. The object of the present invention is to provide a rope exchange method.

Means for Solving the Problems To achieve this object, the present invention provides a hoistway, a machine room formed in the upper part of the hoistway, a car and a counterbalance that are provided in the hoistway so as to be able to be raised and lowered. a weight, and at least one rope connected at both ends to the cage and the counterweight, respectively, installed in the machine room;
In an elevator rope replacement method for replacing an existing rope with a new one in an elevator having a sheave of a hoisting machine and a pulley of a deflection wheel around which an intermediate portion of the rope is wound, firstly, After installing a drum around which a newly installed rope is wound on the cage, one part of the newly installed rope is pulled out from the drum by a predetermined length and placed in the machine room, and the newly installed rope is connected to the balance. The weight is held at a predetermined position above the weight side, and then, while lowering the car, the other part of the newly installed rope is pulled out from the drum and suspended in the hoistway, and then the counterweight is moved up and down the hoistway. Supported by supports installed in the road,
The car is lifted by a lifting device provided in the hoistway, and the existing rope connecting the car and the counterweight is held at a predetermined location above the counterweight side, and then the existing rope is lifted above the predetermined location. Cut the rope, connect the cut part of the existing rope on the car side and one end of the new rope placed in the machine room, and then,
One end of the cage side of the existing rope is removed from the cage and attached to the drum, the cage side portion of the existing rope is wound around the drum, and the new rope connected to this cage side portion is attached to the pulley and the sheave. While hanging the rope, it is drawn to the car and separated from the existing rope, one end of the new rope that has been cut off is attached to the car, and the other end is attached to the counterweight, and the car that has been lifted by the lifting tool is lowered. In addition, the car and the counterweight are lifted by the newly installed rope to return to the normal lifting state, and while the car is raised, the counterweight side portion of the existing rope is wound around the drum. be.

Function> According to the present invention, with the drum on which the new rope is wound as described above placed in the car, the car is raised and lowered as appropriate to attach the new rope, and then the drum is used to attach the existing rope. It is configured to perform collection, which allows
Ropes can be changed safely and quickly without requiring an electric winch or a large elevator hall.

<Example> The elevator rope replacement method of the present invention will be explained based on the drawings.

Figures 1 to 4 are diagrams explaining an embodiment of the elevator rope replacement method of the present invention, in which Figure 1 is a flowchart showing the replacement procedure, and Figure 2 is a flowchart showing the replacement procedure, and Figure 2 shows how the newly installed rope is installed in the hoistway. FIG. 3 is a vertical cross-sectional view showing a state in which a part of the existing rope is recovered, and FIG. 4 is a vertical cross-sectional view showing a state in which another part of the existing rope is recovered.

First, the second section shows how the newly installed rope is installed in the hoistway.
In the figure, 1 is a hoistway, 2 is a machine room formed above the hoistway 1, 2a is an upper machine room located above the machine room 2, and 3.4 is a car installed in the hoistway 1 so that it can be raised and lowered. and a counterweight, 5 is a plurality of existing ropes whose both ends are connected to the cage 3 and the counterweight 4, respectively;
6 is a sheave of a hoisting machine (not shown) provided in the upper machine room 2a and around which the middle part of the existing rope 15 is wound; 7 is a deflector provided in the machine room 2.2a and around which the middle part of the existing rope 5 is wound. Pulley 8 is a mounting bracket fixed to the top of the ladder 3 and to which one end of the existing row 15 is attached; 9 is a mounting bracket fixed to the top of the counterweight 4 to which the other end of the existing row 15 is attached; 10 A rescue opening that can be opened and closed at the top of the basket 3, 11 a new rope to be installed to replace the existing row 15, 12 a rope drum installed inside the basket 3, 13 fixed in the machine room 2 and a new rope 11 is a holder capable of holding it, and 14 is an elevator hall near the hoistway 1.

Further, in FIG. 3 showing a state in which a part of the existing row 15 is recovered, reference numeral 15 is a support device, such as a pedestal, 16.17, which is arranged at the lower part of the hoistway 1 and can support the counterweight 4
is a lifting device provided at the upper part of the hoistway 3, such as a chain block.

In this embodiment, the existing row 15 is replaced with a new row 111 according to the procedure shown in FIG.

That is, first, in step S1, the drum 12 on which the newly installed rope 11 is wound is installed in the car 3, the car 3 is raised to the top floor position, and the holder 1 is placed in the machine room 2.
3 is prepared, and in step S2, as shown in FIG. , the intermediate portion of this newly installed row 111 is held by a holder 13. Note that one part 11a of this newly installed row 111 is wrapped around the pulley 7 and the sheave 6,
Its length is set so that it can be attached to the mounting bracket 8 of the car 3.

Next, in step S3, while lowering the basket 3 at a low speed, the other portion 11b of the newly installed row 111 is pulled out and suspended along the existing rope 5 along with the holder 13. In addition, at this time, it is also possible to suspend several newly installed rows 111 at once.

Then, in step S4, the car 3 is raised to the top floor of the hoistway 1, the counterweight 4 is supported by the pedestal 15 arranged at the bottom of the hoistway 1, and the car 3 is lifted by the chain block 16. The existing row 15 is held in a state in which no tension is applied to the existing row 15, and as shown in FIG. 3, the existing row 15 is held by the chain block 17 above the counterweight 9 side as step S5.
The existing row 15 is cut at an intermediate portion A above this holding portion, and the cut portion of the cage 3 side portion 5a of the existing row 15 and one end of one portion 11a of the new loaf 11 are connected at a connecting portion B. Note that this connecting portion B has an outer diameter dimension equivalent to the rope diameter of the existing port 15 so that it can pass through the rope groove of the sheave 6.

Further, when the ceiling of the upper machine room 2a is high, the chain block 17 can be attached to the ceiling of the upper machine room 2a to safely perform work.

Next, in step S6, the end of the existing row 15 on the car 3 side is removed from the car 3 and attached to the drum 12 in the car 3 through the rescue port 10, and in step S7, the end portion 5a of the existing row 15 on the car 3 side is removed. is wound around the drum 12, and the newly installed rope 11 connected to this part 5a is passed around the pulley 7 and the sheave 6, drawn to the car 3, and separated at the connection part B, and the end of the newly installed rope 111 that has been separated is Cart 3
Attach to the mounting bracket 8 of the existing row 15 as step S8.
Remove the end of the counterweight 4 side from the mounting bracket 9,
An end portion of a new row 111 that hangs down along the existing row 15 is attached to this mounting bracket 9.

As a result, both ends of the newly installed row 111 are connected to the car 3 and the counterweight 4, respectively, and the middle portion is wound around the sheave 6 and the pulley 7.

After that, as step S9, a new row 1 is installed using the holder 13.
11 and lifting of the car 3 by the chain block 16, the lifting of the car 3 is returned to the normal state, the chain block 16 and the pedestal 15 are removed, and as step SIO, the car 3 is lifted. After lowering 3,
Connect the end of the existing row 15 on the counterweight 4 side to the rescue opening 10
As shown in FIG. 4, as shown in FIG. to recover. In addition, at this time, it is also possible to collect several existing rows 15 at once. In addition, as step S12, the chain block 17, the holder 1
Remove 3.

According to the embodiment configured in this way, the new row 111 can be placed and the existing row 15 can be recovered by lifting the car 3 and lifting the chain blocks 16 and 17 using the hoisting machine. There is no need for an electric winch, and since the new row 111 is pulled out from the drum 12 in the car 3 and the existing row 15 is wound onto this drum 12, a large work area is not required in the elevator hall 14. In addition, the labor required to handle the new row 111 and the existing row 15 is reduced, the work at high places in the hoistway 1 is also reduced, and the existing rope 5 can be safely and quickly replaced with the new row 111. Can be done.

<Effects of the Invention> Since the present invention is configured as described above, ropes can be replaced without requiring a large work area in an electric winch or an elevator hall, and therefore, the troublesome preparation work associated with installing an electric winch can be avoided. Not only can this be omitted, but it also has the effect of preventing accidents involving third parties in the elevator hall, and improving work safety and speed.

[Brief explanation of the drawing]

Figures 1 to 4 are diagrams explaining an embodiment of the elevator rope replacement method of the present invention, in which Figure 1 is a flowchart showing the replacement procedure, and Figure 2 is a flowchart showing the replacement procedure, and Figure 2 shows how the newly installed rope is installed in the hoistway. FIG. 3 is a vertical cross-sectional view showing a state in which a part of the existing rope is recovered, and FIG. 4 is a vertical cross-sectional view showing a state in which another part of the existing rope is recovered. 1... Hoistway, 2.2a... Machine room,
3...basket, 4...balance weight,
5... Existing rope, 6... Sheave, 7
...Pulley, 8.9...Mounting bracket, 1
1...New rope, 12...Drum,
13...Holder, 15...Receptacle (supporting tool), 16.17...Chain block (lifting tool). 1- -eat Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] (1) A hoistway, a machine room formed in the upper part of the hoistway, a car and a counterweight provided in the hoistway so as to be able to be raised and lowered, and at least one car and a counterweight connected at both ends to the car and the counterweight, respectively. one rope and
The elevator is installed in the machine room and has a hoist sheave around which the intermediate part of the rope is wound, and a deflection wheel pulley, and the elevator is used to replace the existing rope with a new one. In the rope replacement method, first, a drum on which a newly installed rope is wound is attached to the cage, and then one part of the newly installed rope is pulled out from the drum by a predetermined length and placed in the machine room. , holding the newly installed rope at a predetermined position above the counterweight side, and then, while lowering the car, pulling out the other part of the newly installed rope from the drum and suspending it into the hoistway; after that,
The counterweight is supported by a support provided in the hoistway, the car is lifted by a lifting tool provided in the hoistway, and an existing rope connecting these cars and the counterweight is attached to the counterweight. After holding the existing rope at a predetermined point above the side, the existing rope is cut above the predetermined point, and the cut part of the existing rope on the car side is connected to one end of the new rope placed in the machine room. Next, one end of the car side of the existing rope is removed from the car and attached to the drum, the car side part of the existing rope is wound around the drum, and the new rope connected to this car side part is attached to the drum. The rope is pulled to the cage while passing around the pulley and the sheave, and is separated from the existing rope.One end of the new rope that has been cut off is attached to the cage, and the other end is attached to the counterweight, and the rope is lifted by the lifting tool. While lowering the car, the car and the counterweight are lifted up by the new rope to return to the normal lifting state, and while the car is raised, the counterweight side portion of the existing rope is wound around the drum. An elevator rope replacement method characterized by: