JP3213686B2 - Main rope replacement method and moving jig for elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a car and the main rope replacement method of an elevator to replace the main rope hanging counter, and transfer Dochi device that are used in the main rope replacement method.

[0002]

2. Description of the Related Art FIG. 10 is a diagram showing the construction of a conventional elevator. 1 is a sheave of a hoisting machine arranged in a machine room, 2 is a main rope wound around the sheave 1, and 3 is a suspension sheave. A car 4 hung on the main rope 2 through the hoistway is suspended by the main rope 2, 4 is a counter hung on the main rope 2 via the hoisting wheel 5, and 6 is attached to an end of the main rope 2 on the car 3 side. A basket-side rope shackle 7 is a counter-side rope shackle attached to the end of the main rope 2 on the counter 4 side.

FIG. 11 is an explanatory view for explaining a method of replacing a main rope 2 of an elevator, wherein 10 is a winch placed in a machine room, 11 is a rope fixing stand fixed to a counter rail, and 12 is a main rope 2 A rope pull-out jig placed on the top floor when replacing the rope, 13 is a support pillar that is placed on the bottom of the pit 14 and supports the counter 4,
Reference numeral 15 denotes a rope winding jig placed on the lowest floor, and the winch 10, the rope fixing stand 11, and the rope pulling jig 1
2. The support pillar 13 and the rope winding jig 15 are used when replacing the main rope, respectively.

Next, a method of replacing the main rope will be described with reference to the drawings. As shown in FIG. 11, first, as a preparation stage for replacing the main rope 2, the counter 4 is
, And the car 3 is hung by a chain block (not shown) attached to a machine room stand (not shown). afterwards,
The old main rope 2A is removed from the hanging wheel 5 of the counter 4.
Also, a rope pull-out jig 12 is installed at the top floor landing, and a rope winding jig 15 is installed at the lowest floor landing.

After that, the winch 10 is set in the machine room,
The tip of the winch rope 16 is connected to the old main rope 2A on the counter 4 side, and then the old main rope 2A is cut at the cutting point A of the old main rope 2A above the connection point. When cut, the old rope 2A on the lower side of the counter 4 is connected by the winch rope 16 and the old main rope 2A
Does not fall into the pit 14, and the equipment and the like in the hoistway are not damaged by the old main rope 2A. The other end of the old rope 2A, one end of which is connected by a winch rope 16, is connected to a rope winding jig 15, and the old main rope 2A is wound by the rope winding jig 15 while lowering the winch rope 16. When the old main rope 2A is cut, it is suspended from the machine room, and the remaining old main rope 2A has a part on the sheave 1 side and a part on the rope shackle 7 side. Collected on the room side.

Next, the old main rope 2A is cut at a cutting point B immediately below the car-side rope shackle 6, the cut end is guided to the top floor landing, and the new main rope 2B pulled out from the rope pull-out jig 12 is cut. To the tip C of The machine room side rope portion of the cut old main rope 2A is collected together with the rope shackle 6 into the machine room. on the other hand,
The tip of the old main rope 2A on the counter 4 side left on the sheave 1 is guided to the top floor landing, and the new main rope 2B is moved until the end of the new main rope 2B on the counter 4 side reaches the top floor landing. The old main rope 2A connected to the sheave 1 is slid by human power along the groove of the sheave 1 in the direction of arrow A in FIG. 12 to send out the new main rope 2B into the hoistway.

[0007] After the old main rope 2A reaches the top floor, the connection between the old main rope 2A and the new main rope 2B is released, and the counter-side rope shackle is attached to the end of the new main rope 2B at the top floor. 7 is attached. Thereafter, the new main rope 2B is fed through the sheave 1 and fixed to the rope fixing base 11 as shown in FIG. Next, the car main rope shackle 6 is attached to the car side end of the new main rope 2B while the new main rope 2B is fixed to the rope fixing stand 11 at the top floor landing.

Thereafter, the new main rope 2B is connected to the rope fixing base 1.
1 and is wound around the hanging wheel 5 to fix the counter-side rope shackle 7 to the machine room floor. In addition, the new main rope 2B is wound around the suspension vehicle 8, and the car-side rope shackle is fixed to the machine room floor. The above-described series of main rope replacement work is performed one main rope at a time. Then, finally, the suspension of the car 3 by the chain block is released, and after the support pillar 13 is removed from the counter 13, the car 3 is moved up and down at a low speed, and the work of replacing the main rope is completed.

[0009]

In the conventional main rope replacement operation, the main ropes 2A and 2B do not suspend the car 3 and the counter 4, so that the main ropes 2A and 2B are not suspended.
2B does not press the groove of the sheave 1 and therefore the sheave 1
However, the main ropes 2A and 2B slip, even if the main rope 2A rotates, and the rotation of the sheave 1 cannot be used to move the main ropes 2A and 2B. Therefore, when the main ropes 2A and 2B are moved, the main ropes 2A and 2B must be slid one by one along the groove of the sheave 1 by human power, which requires a great deal of labor and a long time. There was a problem that. Also, when the old main rope 2A is cut, the suspended old main rope 2A does not fall into the pit 14 so that the winch 1
0 is used, but winch 10 is heavy,
There was also a problem that the winch 10 had to be manually carried into the machine room.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is used when an elevator main rope replacement method in which main rope replacement work is simplified and the replacement method is used. it is intended to provide that transfer Dochi tool.

[0011]

SUMMARY OF THE INVENTION A method for replacing a main rope of an elevator according to the present invention comprises fixing a counter to a support column and suspending a car, and installing a first rope fixing stand and a second rope in a hoistway. Providing a fixed base and extending a guide rope between the first and second rope fixed bases, pressing a plurality of old main ropes wound around the sheave with a pressure roller, Removing each old main rope from the hanging vehicle, suspending the moving jig on the old main rope by locking the locking portion of the moving jig moving up and down along the guide rope to all of the old main ropes, Cutting the old main rope immediately below the rope shackle and pulling out the cut end to a predetermined floor, and storing the old main rope pressed by the pressure roller while rotating the sheave in the predetermined floor. A step of raising the moving jig to said first rope around the fixing base along the guide rope, after closer the moving jig to the first rope fixing base,
Stopping the rotation of the sheave and stopping the moving jig on the first rope fixing stand, cutting the old main rope stored at the predetermined floor landing, and removing the old main rope left on the sheave side at the cut portion. A step of connecting the main rope and the new main rope, and after cutting the old main rope on the moving jig, while rotating the sheave while pressing the sheave with a pressure roller, the cut end thereof is A step of guiding the leading end of the new main rope to the predetermined floor hall by rotating the sheave and guiding the new main rope to the predetermined floor hall while stopping the rotation of the sheave and connecting the old main rope and the new main rope to the predetermined floor hall. Releasing and attaching the counter-side rope shackle to the tip of the new main rope; fixing the counter-side rope shackle to the floor of the machine room and moving the moving jig released from the first rope fixing base to the counter side. Hanging on each new main rope Sending the new main rope into the hoistway to a position where the moving jig approaches the hanging wheel of the counter while rotating the sheave while pressing the sheave with the pressure roller, and stopping the operation of the sheave. Removing the moving jig from the new main rope, winding each new main rope around a hanging wheel of the counter, attaching a car-side rope shackle to a car-side end of the new main rope, Fixing the rope shackle to the floor of the machine room and winding the new main rope around a car suspension car;
And finally removing the pressure roller, the first and second rope fixing bases, and the guide rope.

[0012]

[0013]

The moving jig according to the present invention has a pair of guide pipes which move up and down along a guide rope extending vertically in a hoistway, and a plurality of main ropes provided between the guide pipes, respectively. And a plurality of locking portions to be hung on the plurality of main ropes when replacing the main rope.

Further, in the moving jig of the present invention, the locking portion is constituted by a pulley.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is an explanatory view showing Embodiment 1 of the present invention, FIG. 2 is a perspective view of a pressure roller of FIG. 1, and FIG. 3 is a perspective view of a moving jig of FIG. Or, corresponding parts are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 20 denotes an electromagnetic brake bracket, 21 denotes a pressing roller attached to the electromagnetic brake bracket 20 via a pressing roller mounting base 22, and the pressing roller 21 has a roller portion 21a whose surface is covered with hard rubber. And a spring 21b for pressing the roller portion 21a toward the sheave 1 side. Reference numeral 23 denotes a weight 30 having a number of locking portions 23a corresponding to the number of the main ropes 2 and guide pipes 23b formed on both sides of the main body.
A moving jig 24 of about Kg penetrates both guide pipes 23b and has one end fixed to the first rope fixing base 11 and the other end connected to the U-bolt 25 of the second rope fixing base 25.
The guide rope is fixed to a and stretched between the first rope fixing base 11 and the second fixing base 25.

Next, a method of replacing the main rope will be described.
First, as a preparation stage for replacing the main ropes 2, the counter 4 is fixed to the support columns 13, and the car 3 is hung by a chain block attached to a machine room stand (not shown).
In addition, the first rope fixing base 11 and the second rope fixing base 25 are fixed to the counter rail, and a guide rope 24 is stretched between the two rope fixing stands 11 and 25.
When the guide rope 24 is stretched, the moving jig 2
A moving jig 23 is provided on the guide rope 24 so that the guide rope 24 is loosely inserted into the third guide pipe 23b. Further, in the machine room, the pressure roller 21 is fixed to the electromagnetic brake bracket 20 via the pressure roller mounting base 22, and the spring 2
The roller portion 21a presses all the old main ropes 2A wound around the sheave 1 at a time by the elastic force of 1b.

After the above preparatory steps are completed, the old main ropes 2A are detached from the hanging wheel 5 of the counter 4 and all the old main ropes 2A on the counter 4 side are respectively engaged with the locking portions 23a of the moving jig 23. Stop. Next, the cut portion D of the old main rope 2A immediately below the car-side rope shackle 6 is cut, and the cut end is pulled out to the landing on the top floor and connected to the rope winding jig 15. Thereafter, the old main rope 2A is wound around the rope winding jig 15 and stored while manually rotating the sheave 1 counterclockwise. Since the old main rope 2A is pressed by the pressure roller 21, the old main rope 2A
The old main rope 2A is sent to the rope winding jig 15 side and wound up with the rotation of the sheave 1 without slipping in the groove of the sheave 1. At the same time, the moving jig 23 rises along the guide rope 24. When the moving jig 23 approaches the first rope fixing base 11, the rotation of the sheave 1 in the counterclockwise direction is stopped, and the moving jig 23 is moved to the first rope fixing base 11 by a rope (not shown). (See FIG. 4).

After that, the old main rope 2A is cut at the cutting floor E at the landing on the top floor, and the old main rope 2A left on the sheave 1 side and the new main rope pulled out from the rope pull-out jig 12 at the cut point. 2B. Further, the old main rope 2A directly above the moving jig 23 fixed to the first rope fixing base 11 by a rope is cut at the cutting portion F (see FIG. 5), and then the sheave 1 is manually moved clockwise. While rotating, the cutting portion F
Is guided to the top floor landing as shown in FIG. 6, and the sheave 1 is further rotated clockwise by human power to guide the tip end of the new main rope 2B to the top floor landing. At this point, the clockwise rotation of the sheave 1 is stopped, and the connection between the old main rope 2A and the new main rope 2B is released. Subsequently, the counter-side rope shackles 7 are attached to all the new main ropes 2B. When the old main rope 2A is cut at the cutting sections E and F, each old main rope 2A left on the hoisting machine side is collected in the machine room.

Thereafter, the counter side rope shackle 7
Is fixed to the floor of the machine room, and each new main rope 2B on the counter 4 side is locked to the locking portion 23a of the moving jig 23. Then, the binding of the moving jig 23 to the first rope fixing base 11 is released, and the moving jig 23 is hung on the new main rope 2B. In this state, by rotating the sheave 1 further clockwise manually, the new main rope 2B is fed into the hoistway, and the moving jig 23 descends as shown in FIG. The manual operation of the sheave 1 is stopped when approaching the suspension sheave 5. Then, the moving jig 23 is detached from the new main rope 2B, and each new main rope 2B is wound around the hanging wheel 5.

Next, the car-side rope shackle 6 is attached to the car-side end of the new main rope 2B, and the new main rope 2B is wrapped around the suspension vehicle 8 to fix the car-side rope shackle 6 to the floor of the machine room. Next, after removing the pressure roller 21, the first and second rope fixing bases 11, 25, the guide rope 24, and the moving jig 23, the car 3 is hung by a chain block, and the support column 13 is countered. After being removed from the car 13, the car 3 is moved up and down at a low speed, and the work of replacing the main rope is completed.

Reference Example 1 FIG. 8 is a perspective view showing a pressure roller 31 of a split type. The pressure roller 31 has a roller portion 31a divided into two portions so that stable pressure can be applied to a change in the wire diameter of the main ropes 2A and 2B. It becomes possible.

Embodiment 2 FIG. FIG. 9 is a perspective view showing the moving jig 33. In the moving jig 33 of this example, the number of pulleys 33a corresponding to the number of the main ropes 2A and 2B and the guide pipes 33b formed on both sides of the main body are shown.
The use of the pulley 33a allows the moving jig 33 to move smoothly.

As described above, according to the present invention,
When the main rope is replaced, the pulley is rotated to rotate the main rope by using a pressure roller and a moving jig suspended on the plural main ropes to eliminate the relative movement between the sheave and the main rope. The ropes can be moved at the same time, and there is an effect that the operation time for replacing the main rope is greatly reduced and the operation is simplified.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the operation of the present invention.

FIG. 2 is a perspective view of the pressure roller and the sheave of FIG.

FIG. 3 is a perspective view of the moving jig of FIG.

FIG. 4 is another operation explanatory diagram of the present invention.

FIG. 5 is another operation explanatory diagram of the present invention.

FIG. 6 is another operation explanatory view of the present invention.

FIG. 7 is another operation explanatory view of the present invention.

FIG. 8 is a perspective view illustrating an example of a pressure roller.

FIG. 9 is a perspective view showing another embodiment of the moving jig.

FIG. 10 is an operation explanatory diagram of a conventional example.

FIG. 11 is another operation explanatory view of the conventional example.

FIG. 12 is another operation explanatory view of the conventional example.

FIG. 13 is another operation explanatory view of the conventional example.

[Explanation of symbols]

1 sheave, 2A old main rope, 2B new main rope, 3
Basket, 4 counters, 5 and 8 hanging cars, 6 car side rope sockets, 7 counter side rope sockets, 11
1st rope fixing stand, 13 support pillars, 21 pressure roller, 21a roller section, 23 moving jig, 23a locking section, 23b guide pipe, 24 guide rope, 25 second rope fixing stand, 31 pressure roller , 31a Roller part, 33 moving jig, 33a pulley, 33b guide pipe.

Claims (3)

(57) [Claims] 1. An elevator main rope replacement method for replacing a main rope for suspending a car and a counter, the method comprising: fixing a counter to a support column; suspending the car; Second
Providing a rope fixing base and stretching a guide rope between the first and second rope fixing bases, and pressing a plurality of old main ropes wound around the sheave with pressure rollers, Removing each old main rope from the hanging wheel of the counter, suspending the moving jig on the old main rope by locking the locking portion of the moving jig moving up and down along the guide rope to all of the old main rope, A step of cutting the old main rope immediately below the car-side rope shackle and pulling out the cut end to a predetermined floor, and then storing the old main rope pressed by the pressure roller while rotating the sheave in the predetermined floor Along with
Raising the moving jig to near the first rope fixing base along the guide rope, and stopping the rotation of the sheave after moving the moving jig close to the first rope fixing base;
Stopping the moving jig on the first rope fixing stand, cutting the old main rope stored at the predetermined floor, and connecting the old main rope and the new main rope left on the sheave side at the cut point. Connecting and cutting the old main rope on the moving jig, then guiding the cut end to the predetermined floor while rotating the sheave while pressing with a pressure roller,
Continuing the rotation of the sheave to guide the tip of the new main rope to the predetermined floor landing; stopping the rotation of the sheave to release the connection between the old main rope and the new main rope; Attaching the counter-side rope shackle to the part, fixing the counter-side rope shackle to the floor of the machine room, and suspending the moving jig released from the first rope fixing base to each new main rope on the counter side. Sending the new main rope into the hoistway to a position where the moving jig approaches the hanging sheave of the counter while rotating the sheave while pressing the sheave with the pressure roller, and stopping the operation of the sheave And removing the moving jig from the new main rope, winding each new main rope around the hanging wheel of the counter, and attaching a car-side rope shackle to a car-side end of the new main rope. Fixing the car-side rope shackle to the floor of the machine room and winding the new main rope around a car suspension wheel. Finally, the pressure roller, the first and second rope fixing bases Removing the guide ropes from each other. 2. A pair of guide pipes moving up and down along a guide rope extending vertically in a hoistway, and a plurality of locking portions provided between the guide pipes and locked by a plurality of main ropes, respectively. A moving jig which is hung on a plurality of main ropes when replacing the main rope. 3. The moving jig according to claim 2 , wherein the locking portion is a pulley.