JP2002160877A - Elevator rope replacement method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate replacing work of an elevator car hoisting rope by reducing a burden involved in a new rope feeding and old rope recovering operation. SOLUTION: Both ends 24 and 26 of an existing rope 18 are released from beams 46 and 48 to which they are fixed for vertical travel of an elevator car 14, and then interconnected to loop the existing rope 18. The looped rope 18 is moved along deflector sheaves 32 and 34, pulleys 66 and 68, and the like all forming a rope guiding means. When both ends 24 and 26 are moved to a bottom floor 19, the looped state of the existing rope is untied, and in the place, a feeding operation of a new rope 72 and a recovering operation of the existing rope 18 are executed. After an entire roping part is replaced with the new rope, both ends of the new rope are interconnected again near a top floor, and the looped rope 18 is moved along the deflector sheaves 32 and 34, the pulleys 66 and 68, and the like as the rope guiding means until the connection reaches the positions 24 and 26. The looped state of the new rope is then untied, and the new rope is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing a rope for raising and lowering an elevator car, and more particularly, to a method for replacing a rope by forming the rope in an annular shape and moving the rope formed in an annular shape.

[0002]

2. Description of the Related Art A conventional method for replacing an elevator car elevator rope will be described with reference to a so-called 1: 1 roping elevator in which one end of a rope is attached to an elevator car and the other end is attached to a counterweight.

First, an elevator car is fixed at a position near the top floor of a hoistway, and a counterweight is fixed at a position near the lowest floor of a hoistway. In this state, one end of the existing rope is removed from the elevator car and connected to the end of the new rope.
New ropes are delivered from a rope supply located on or near the top floor. On the other hand, the other end of the existing rope is removed from the counterweight and connected to a rope winding device provided below the hoistway. New ropes will be sent down the hoistway sequentially by the rope supply device, and the existing ropes will be collected by the rope winding device. After recovering the existing rope, remove the end of the new rope from the connected existing rope and connect it to the counterweight. On the other hand, the other end of the new rope removed from the rope supply device is attached to the elevator car.

[0004] In the above method, since the supply location of the new rope and the collection location of the existing rope are separated from the floor above the hoistway and the floor below the hoistway, there is a problem that the rope is easily dropped by its own weight. was there. In addition, there is a problem that it takes much labor to guide the rope while holding the rope when feeding the rope even if the rope does not fall.

[0005]

In order to solve the above-mentioned problems, for example, Japanese Patent Application Laid-Open Nos. Hei 3-106780 and Hei 2
As disclosed in JP-A-117581 and JP-A-1-181689, there is known a method of providing a holding device for holding a rope during a replacement operation to prevent the above-described rope from falling.

However, even in the above-mentioned rope replacement method, the place where the existing rope is collected and the place where the new rope is supplied are still separated from each other. There was a problem that it was difficult to contact between In addition, although the rope is held during the replacement work, when the hoistway is long, the rope holding work and the like also require a great deal of labor.
Further, in such a method, there is a problem that the replacement is performed for each rope, and when there are a plurality of ropes, it takes much time to perform the operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method of replacing a rope, which can reduce the burden associated with a new rope supply operation and an old rope recovery operation and facilitate the replacement operation. is there.

[0008]

In order to achieve the above object, the present invention relates to a method for replacing an existing rope for elevating and lowering an elevator car with a new rope. A step of removing each end from the predetermined position, a step of connecting the removed ends to each other to form the existing rope in an annular shape, and Moving the existing rope formed in an annular shape, separating the moved existing rope in at least one position at a desired position, and releasing the existing rope in an annular state. Connecting one end of the new rope to one end of the existing rope, and connecting the existing rope from the other end of the existing rope separated at a desired position. Characterized in that it comprises a step of recovering up, the.

According to the above-mentioned method, since both ends of the existing rope are connected to each other to form the existing rope in an annular shape, a place where the annular state is released can be arbitrarily selected. And recovery of existing ropes. The location where new ropes are supplied and where existing ropes are collected are close to each other, making it easy for workers to communicate with each other. Can be reduced. In addition, if the work place is selected near the lowest floor, the mental burden of the worker is reduced.

Further, as described above, the existing rope is formed in an annular shape, and can move along the rope guiding means. Since the time required for the connection work increases as the number of portions where both ends of the existing rope are connected and the number of connecting portions between the existing rope and the new rope increase, it is better to reduce the number as much as possible. Therefore, it is preferable to move both ends of the existing rope to the work position and release the annular state there, rather than providing a new place for releasing the annular state of the existing rope. This makes it possible to smoothly replace the rope, particularly recover the existing rope, and supply a new rope.

Here, when the existing rope is formed in an annular shape, both ends may be directly connected, or the ends may be further relayed by a rope. The rope guide means is, for example, a pulley which is already provided when the elevator is moved up and down, but also includes an auxiliary pulley which is newly provided when replacing the rope. When the elevator is used, each end of the existing rope is for example 1:
In the case of a 1-roping elevator, it is attached to a car and a counterweight, and in the case of a 2: 1 roping elevator, it is attached to a beam or the like provided in an elevator hoistway or an upper machine room.

Preferably, after the existing rope is recovered, the one end of the new rope is connected to the other end of the new rope to form the new rope in an annular shape. Moving the new rope formed in an annular shape along the arranged rope guide means, separating the moved new rope at at least one desired position, and releasing the annular state of the new rope. And attaching each of both ends of the new rope separated at a desired position to the predetermined position.

According to the above-mentioned method, first, both ends of the new rope are connected, and the new rope is formed in a ring shape. next,
By moving the annularly formed new rope along the guide means, the both ends can be moved to the vicinity of the predetermined position. Thereafter, the communication between the both ends is released, and each end is attached to the predetermined position to complete the rope replacement operation.

As described above, since both ends of the new rope can be moved to the predetermined positions, a work place for connecting both ends of the new rope is selected without being influenced by a place where the both ends of the new rope are attached. be able to.

Preferably, the method includes a step of fixing an elevator car and a counterweight which can be moved near the predetermined position to required positions when replacing the existing rope with the new rope.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(1) First Embodiment FIG. 1 conceptually shows a configuration of roping in a 2: 1 roping elevator car apparatus 10 to which an elevator rope replacement method according to a first embodiment of the present invention is applied. FIG.

The elevator car device 10 includes an elevator car 14, a counterweight 16,
A rope 18 and a hoist 2 provided in an elevator pit 20 provided below an elevator lowest floor 19.
2 is comprised. When the elevator is used, both ends 24 and 26 of the rope are connected to the beam 2 provided above the hoistway 12.
8 and 30, respectively. Deflection wheels 32 and 34 are provided under the floor of the elevator car 14, and the counterweight 16 is provided with a pulley 36.

The rope 18 passes from the beam 28 to which one end 24 is attached, passes through the side of the elevator car 14, is wrapped around a deflecting wheel 34, and then is passed over a deflecting wheel 32, and It passes around the other side of 14 and is wound around a pulley 37 provided above the hoistway 12. Then, it is conveyed downward, wound around the sheave 38 of the hoisting machine 22, and then conveyed again. The rope 18 carried upward is turned by a pulley 42 provided above the hoisting machine 22 near the highest floor 40 of the elevator, transported to a position above the counterweight 16, and transported downward again by the pulley 44. After being conveyed downward, it is wrapped around a pulley 36 provided on the counterweight 16 and conveyed again, and the other end 26 is attached to a beam 30 provided above the hoistway 12.

The rope ends 24 and 26 include rods 46 and 48 connected via sockets (not shown), respectively. 28, 30.

Next, the replacement work of the rope 18 will be described with reference to FIGS.
This will be described with reference to FIG. Note that components common to FIGS. 1 to 5 are denoted by the same reference numerals.

First, as shown in FIG.
After fixing the elevator car 14 to a counterweight holder 50, for example, a counterweight support constituted by a square bar or the like, the elevator car 14 is lifted and held near the top floor 40 by a chain block (not shown) or the like. In this case, the existing rope 18 becomes loose.

Next, as shown in FIG.
Rope holders 52 and 54 are provided below the ropes 6 and 48, respectively. For example, a rope hanging chuck or the like is used as the rope holder. One end of the rope holder 52 is fixed to a guide rail (not shown) of the elevator car 14, and holds the lower portion of each of the rope ends 24. Rope holder 54
One end of the guide rail of the counterweight 16 (not shown)
And the other end holds below the rope end 26.
In this state, the existing rope 1 is located below the beams 28 and 30.
8 are cut off from the beams 28 and 30 at both ends 24 and 26 (see A and A 'in FIG. 2). Thereafter, the both ends 24, 26 of the removed existing lobe 18 are relayed by dummy ropes 56 as necessary, and communicated with each other to form the existing rope 18 in an annular shape. Here, 62 is a connection portion between the end portion 24 of the existing rope and the end portion 58 of the dummy rope,
64 is the end 26 of the existing rope and the end 60 of the dummy rope.
It is a connection part with. Further, auxiliary pulleys 66 and 68 are attached to the beams (not shown) in the hoistway 12 via slinging ropes (not shown) below the connected ropes.

Here, as a connection method between the ropes, for example, a rope connection method by braiding and fixing the rope, a rope strand connection method, a connection method using a tough Excel grip, or the like is adopted.

Next, as shown in FIG. 3, the rope is guided manually and the connecting portions 62 and 64 of the rope are connected to the lowest floor 19.
It is moved to the vicinity (see the arrow in FIG. 2 and the dashed line in FIG. 3). The existing rope 18 in the annular state includes pulleys 37, 42, and 44 used when the elevator car is used for lifting and lowering, sheaves 38 of the hoist, and pulleys 66 and 68 provided as auxiliary.
It moves while being guided by.

After the connecting portions 62 and 64 are moved to the vicinity of the lowest floor 19, the connecting portion 62 is cut off to release the annular state of the existing rope 18, and the cut end 24 of the existing rope is moved to the lowest floor 19. It is attached to the installed drum 70. On the other hand, the connecting portion 64 is also separated, and the other end 26 of the existing rope and one end 74 of the new rope 72 are connected by any of the connection methods described above. A new rope 72 is wound on the drum 78 in advance. Here, reference numeral 76 denotes a connecting portion between the other end 26 of the existing rope and one end 74 of the new rope 72. In this state, the existing rope 18 is wound around the drum 70 from the end 24 side and collected while supplying a new rope from the drum 78 manually (see the arrow in FIG. 3).

As shown in FIG. 4, after the recovery of the existing rope 18 is completed, the existing rope 18 is
Disconnect from On the other hand, the new rope on the drum 78 side is cut off at a desired position from the new rope 72 wound around the drum 78, and the end 80 and one end 74 of the separated new rope are connected by the above-described connection method. To form a new rope 72 in an annular shape (see the dashed line in FIG. 4).
In addition, 82 is the number of the connection part of the both ends 74 and 80 of the new rope.

Next, the connecting portion 82 of the new rope 72 is moved to the vicinity of the beams 28 and 30 above the hoistway by hand. As described above, the new rope 72 in the annular state is provided with the pulleys 37, 42, and 44 used when the elevator car 14 is used for lifting and lowering.
And it moves while being guided by the pulleys 66, 68 and the like provided auxiliary.

As shown in FIG. 5, after the connecting portion 82 is moved (see the dashed line in FIG. 5), the connecting portion 82 is moved by the rope holder.
The new rope 72 is held below the beams 28 and 30.
The new rope 72 is separated by the connecting portion 82 to release the annular state. A processing for attaching a rod 86 via a socket to one end 84 of the new rope whose annular state has been released is performed (not shown). Thereafter, the rod 86 is fixed to the beam 28 and attached to the end 84 of the new rope 72. After appropriately adjusting the total length of the new rope to the length in use, the other end 88 is subjected to the same processing as the end 84, and the rod 90 is fixed to the beam 30, and the end 88 is attached.

Finally, the rope holders 52 and 54 and the pulleys 66 and 68 are removed, the lifting of the elevator car by the chain block is released, and the fixing of the counterweight 16 by the counterweight retainer is released to replace the rope. Ends.

As described above, since the both ends of the existing rope 18 are connected and the existing rope 18 is formed in an annular shape, the rope 18 can be moved along the rope guiding means. Therefore, both ends 24 and 26 of the existing rope 18 are connected to the lowest floor 1
9, the existing rope is released from the annular state, and the supply of the new rope 72 and the recovery of the existing rope 18 can be performed at that location. Since the place where the rope supply work is performed and the place where the existing rope collection work is performed are close to each other, the instability of the replacement work due to the own weight of the rope can be reduced, and the workers can easily communicate with each other.
Further, since the work place is the lowest floor, the mental burden on the worker is reduced.

Further, by moving the new rope 72 formed in an annular shape along the rope guiding means, the connecting portions 82 at both ends of the new rope connected to each other are connected to the beams 28 and 3.
It can move near zero. Therefore, a work place for connecting both ends of the new rope can be selected without being affected by a place where the both ends of the new rope 72 are attached, that is, a place where the beams 28 and 30 are provided.

In the present embodiment, the replacement process in which only one rope is used has been described. However, even when there are a plurality of ropes, if the above-described process is performed simultaneously for each of the ropes, the replacement process can be performed for each rope. Work time can be greatly reduced as compared with the replacement method. In the case of the present embodiment, the movement corresponds to the movement of the existing rope 18 formed in an annular shape (see the arrow in FIG. 2 and the alternate long and short dash line in FIG. 3) and the movement of the new rope 72 (arrow in FIG. 4). Is not necessarily performed manually, but rather by tensioning the rope (eg, car 1
It is also possible to move the rope by driving the hoist 18 by lowering the suspension of 4, or lifting up the pulleys 66, 68 attached later).

(2) Second Embodiment FIG. 6 conceptually shows a configuration of roping in a 2: 1 roping elevator car apparatus 100 to which an elevator rope replacement method according to a second embodiment of the present invention is applied. FIG.

The elevator car device 100 includes a hoistway 10
2 includes an elevator car 104, a counterweight 106, a rope 108, and a hoist 112 provided in a machine room 110 above the hoistway 102. When using the elevator, both ends 114 of the rope 108,
116 is a rope end mounting portion 1 provided on the machine room floor 118
20 and 122, respectively. A pulley 124 is provided above the elevator car 104, and the counterweight 106 has a pulley 126.

The rope 108 is carried downward from a rope end mounting portion 120 to which one end portion 114 is mounted, and is wound around a pulley 124 of the elevator car 104. Then, after being carried upward and wound around the sheave 128 of the hoist 112 provided in the machine room 110,
It is turned downward by the return wheel 130. After that, the rope 108 is wound around the pulley 126 of the counterweight 106, and then carried upward, and the other end 116 of the rope 108 is attached to the rope end attachment portion 122 provided in the machine room 110.

The rope ends 114 and 116 are connected to rods 132 and 134 connected via sockets (not shown).
And the rod ends 132 and 134 are attached to the rope end attachment portions 120 and 122 by holding the rods 132 and 134, respectively.

Here, the process of simultaneously replacing a plurality of ropes will be described. In the figure, when the ropes 108 are to be distinguished, for example, lowercase alphabets such as 108a and 108b are appended to the numbers to distinguish the ropes. .

Next, the replacement operation of the rope 108 will be described with reference to FIGS. 6 to 13.
Are assigned the same numbers.

First, as shown in FIG.
06 is fixed below the hoistway 102 by the counterweight presser 136, and then the elevator car 104 is moved to the top floor 136.
It is hoisted near by a chain block (not shown). In this case, the existing rope 108 is in a state of being loosened.

Next, as shown in FIG. 7, rope holders 139 and 140 for holding the rope 108 below the rope end attachment portions 120 and 122 in this state are provided. One end of the rope holder 139 is fixed to a guide rail (not shown) of the elevator car 104, and the other end holds a portion below the rope end 114. Further, one end of the rope holder 140 is fixed to a guide rail (not shown) of the counterweight 106, and the other end holds a portion below the rope end 116. next,
In this state, both ends 114 and 116 (see B and B 'in FIG. 7) of the existing rope 108 are cut below the rope end attachment portions 120 and 122, respectively, and removed from the rope end attachment portions 120 and 122.

As shown in FIG. 8, both ends 114 and 116 of the removed existing rope 108 are connected to the dummy rope 142.
The existing ropes 108 are formed in a ring shape by relaying with each other. 146 is a connection portion between the end portion 114 of the existing rope and the end portion 144 of the dummy rope 142, and 150 is a connection portion between the end portion 116 of the existing rope and the end portion 14 of the dummy rope 142.
8. The dummy rope 142 is connected to the existing rope 108 via pulleys 154 and 156 provided on the machine room ceiling 152 to replace the existing rope 108. The dummy rope 142 is conveyed from the end 144 side to the upper part of the machine room 110, wrapped around the pulley 154, turned, and conveyed above the counterweight 106,
It is wrapped around the pulley 156 and is carried downward, and the other end 14
8 is connected to the existing rope 108.

After the existing rope 108 is formed in an annular shape, the mounting positions of the pulleys 154 and 156 are shifted upward,
The existing rope 108 is tensioned (see a dashed line in FIG. 9).

After that, the hoist 112 is driven or the connecting parts 146 and 150 are moved to the vicinity of the lowest floor 158 by hand (see the arrow in FIG. 8). The existing rope 108 in the annular state is connected to auxiliary pulleys 154, 15
6. The vehicle is guided by the return vehicle 130 or the like.

After the connecting portions 146 and 150 have been moved to the vicinity of the lowermost floor, the connecting portion 146 is cut off as shown in FIG. An end 146 (not shown) of the separated dummy rope is attached to a drum 160 provided on a floor 159 one floor higher than the lowest floor of the elevator.

Next, as shown in FIG.
The end 114 of the new rope 162 and the end 164 of the new rope 162 are connected. Drum 1 installed on the lowest floor 158 of the elevator
A new rope 162 is wound around 66 in advance. Here, reference numeral 168 denotes a connecting portion between the end 114 of the existing rope and the end 164 of the new rope. Next, while the new rope 162 is supplied from the drum 166 by hand, the existing rope 108 is wound around the drum 160 from the end 116 side and collected. (See the arrow in FIG. 10). The means for moving the rope may drive the hoist or may be manually operated.

After the recovery of the existing rope 108 is completed, the connecting portion 1
At 68 (not shown), the existing rope 108 is
Disconnect from 2. On the other hand, the new rope 162 on the drum 166 side is cut off from the new rope wound on the drum 166 at a desired position. As shown in FIG. 11, the end 170 and the end 164 of the separated new rope are connected to form a new rope 162 in an annular shape. In addition, 172 is a connection part of both ends 164 and 170 of the new rope. Here, as the connection method between the ropes, as described above, a rope connection method by braiding and fixing the rope, a rope strand connection method, a connection method using a tough Excel grip, and the like are used.

Next, as shown in FIG.
The new rope 162 is moved by driving the hoist 112 or manually through the second connection portion 172.
(Refer to the arrow in FIG. 11). The new rope 162 in the annular state includes the pulleys 154 and 156, which are provided as auxiliary, and the return wheel 130 as described above.
It is guided and moved.

After the connecting portion 172 has been moved, a new rope 162 is provided below the rope end attaching portions 120 and 122.
Are provided.

Thereafter, as shown in FIG.
62 is disconnected at the connection portion 172 to release the annular state. One end 174 of the new rope 162 released from the annular state is subjected to a processing for attaching a rod 176 via a socket, and the end 174 of the new rope is connected to the rod 176.
Is fixed to the rope end mounting portion 122 to be attached.

Next, after appropriately adjusting the total length of the new rope to the length in use, the other end 178 is also adjusted to the end 174.
The same processing is performed. The end 178 of the new rope is attached by fixing the rod 180 to the rope end attachment 120.

Finally, the rope holder 139 is connected to the hoistway 102
After being removed from the inside, the lifting of the elevator car 104 by the chain block is released, the fixing of the counterweight 106 by the counterweight presser 138 is released, and the rope replacement process is completed.

As described above, since both ends of the existing rope 108 are connected to each other to form the existing rope 108 in an annular shape, the rope 108 can be moved along the rope guide means. Therefore, the connection portions 146, 1 of the existing rope 108
50 is moved to the vicinity of the lowest floor, where the existing rope is released from the annular state, so that the supply work of the new rope 162 can be performed at the lowest floor, and the existing rope can be installed at the floor one floor above the lowest floor. The recovery operation of the rope 108 can be performed. Since the place where the rope supply work is performed and the place where the existing rope collection work is performed are close to each other, it is easy for workers to communicate with each other, and the instability of the replacement work due to the weight of the rope can be reduced. Further, since the work place is near the lowest floor, the mental burden on the worker is reduced.

Further, by moving the new rope 162 formed in an annular shape along the rope guide means, the connecting portions 172 at both ends of the new rope connected to each other can be moved to the machine room 110. Therefore, a work place for connecting both ends of the new rope is a place where both ends of the new rope 72 are attached, that is, the rope end attaching portion 12.
It can be selected regardless of the location where 0, 122 is provided.

Further, since the processing can be performed in parallel by the number of ropes, according to this method, the operation time can be greatly reduced as compared with the rope replacement method for each rope.

[0056]

As described above, according to the elevator rope replacement method according to the present invention, a rope replacement method that facilitates the replacement work by reducing the burden of supplying new ropes and recovering old ropes is provided. can do.

[Brief description of the drawings]

FIG. 1 is a diagram showing a rope replacement method according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a rope replacement method according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a rope replacement method according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a rope replacement method according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a rope replacement method according to the first embodiment of the present invention.

FIG. 6 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 7 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 8 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 9 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 10 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 11 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 12 is a view showing a rope replacement method according to a second embodiment of the present invention.

FIG. 13 is a view showing a rope replacement method according to a second embodiment of the present invention.

[Explanation of symbols]

10,100 elevator car device, 12,102 hoistway, 14,104 elevator car, 16,106 counterweight, 18,108 rope, 19 elevator bottom floor, 22,112 hoist, 62,64,82,1
46, 150, 172 connections, 110 machine room.

Claims (3)

[Claims] 1. A method for replacing an existing rope for raising and lowering an elevator car with a new rope, the steps of: removing each end of the existing rope attached to a predetermined position from the predetermined position when the elevator is used; Connecting the respective ends formed to each other to form the existing rope in an annular shape; and moving the existing rope formed in an annular shape along the rope guide means arranged at a required position. A step of releasing the existing rope that has been cut off at least one location at a desired position to release the annular state of the existing rope, and connecting one end of the new rope to one end of the existing rope that has been cut off at the desired position And recovering the existing rope from the other end of the existing rope separated at a desired position. Elevator rope replacement method. 2. The rope replacement method according to claim 1, wherein after the existing rope is recovered, the one end of the new rope is connected to the other end of the new rope, and the new rope is formed into an annular shape. Forming, and moving the new rope formed in an annular shape along the rope guide means arranged at a required position; and separating the moved new rope at at least one place at a desired position; An elevator rope replacement method, comprising: releasing an annular state of the new rope; and attaching each of both ends of the new rope separated at a desired position to the predetermined position. 3. The method of replacing a rope according to claim 1, further comprising a step of fixing the elevator car and the counterweight at required positions when replacing the existing rope with the new rope. Rope replacement method.