JPH0986823A - Method for replacing main rope of elevator, pressing roller and moving jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotate a sheave and simultaneously move a plurality of main lopes by using a pressing roller which eliminates relative movement between the sheave and the main rope and a moving jig suspended by a main rope when replacing the main ropes. SOLUTION: A pressing roller 21 is mounted on a magnetic brake bracket 20 via a pressing roller mounting base 22 and a moving jig 23 has fixing parts corresponding to the number of main rope 2 and a guide pipe formed on both sides of the body. A guide rope 24 is passed through the guide pipe and its one end is fixed on a first rope fixing base 11 and the other end is fixed on the U bolt of a second rope fixing base 25, thereby the rope 24 is stretched between the first rope fixing base 11 and the second rope fixing base 25. Therefore a plurality of main ropes are simultaneously moved by rotating the sheave, thereby greatly shortening time required to replace the main rope and simplifying the work of replacing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator main rope replacement method for replacing a main rope for suspending a car and a counter, and a pressure roller and a moving jig used in the main rope replacement method.

[0002]

2. Description of the Related Art FIG. 10 is a block diagram of a conventional elevator. 1 is a sheave of a hoisting machine disposed in a machine room, 2 is a main rope wound around the sheave 1, and 3 is a hoisting vehicle. A car that is hung on the main rope 2 via 8 and moves up and down in the hoistway. 4 is a counter that is hung on the main rope 2 via a suspension vehicle 5. 6 is attached to the end of the main rope 2 on the car 3 side. The car-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 the main rope 2 of the elevator. 10 is a winch placed in a machine room, 11 is a rope fixing base fixed to a counter rail, and 12 is a main rope 2. When the rope is replaced, the rope drawing jig placed on the top floor hall, 13 is a support pillar placed on the bottom of the pit 14 and supporting the counter 4,
Reference numeral 15 is a rope winding jig placed on the bottom floor, which includes the winch 10, the rope fixing base 11, and the rope withdrawing jig 1.
2, the support column 13 and the rope winding jig 15 are used when replacing the main rope.

Next, a method of replacing the main rope will be described with reference to the drawings. As shown in FIG. 11, first, as a preparatory step for replacing the main rope 2, the counter 4 is supported by the support pillars 13.
And the car 3 is hung by a chain block (not shown) attached to a machine room base (not shown). afterwards,
Remove the old main rope 2A from the suspension vehicle 5 of the counter 4.
Further, the rope withdrawing jig 12 is installed at the top floor hall, and the rope winding jig 15 is installed at the bottom floor hall.

After that, the winch 10 is installed in the machine room,
The tip portion 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 disconnected, 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
Will not fall into the pit 14, and the equipment and the like in the hoistway will not be damaged by the old main rope 2A. The other end of the old rope 2A whose one end is connected by the winch rope 16 is connected to the rope winding jig 15, and the old main rope 2A is wound around the rope winding jig 15 while lowering the winch rope 16. When the old main rope 2A is cut, it is hung 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, but the part on the rope shackle 7 side is the machine. Collected on the room side.

Next, the old main rope 2A is cut at a cutting point B just 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 pulling jig 12 is cut. It connects with the tip part C of. The rope portion on the machine room side of the cut old main rope 2A is collected together with the rope shackle 6 in the machine room. on the other hand,
Guide the tip of the old main rope 2A on the counter 4 side left on the sheave 1 side to the top floor landing, and until the end of the new main rope 2B on the counter 4 side reaches the top floor landing, the new main rope 2B. The old main rope 2A connected with is slid manually along the groove of the sheave 1 in the direction of arrow A in FIG. 12, and the new main rope 2B is fed into the hoistway.

Thus, after the old main rope 2A reaches the top floor landing, 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 landing. Attach 7. Then, the new main rope 2B is fed through the sheave 1 and fixed to the rope fixing base 11 as shown in FIG. Next, at the top floor hall, with the new main rope 2B fixed to the rope fixing base 11, the car side rope shackle 6 is attached to the car side end of the new main rope 2B.

After that, the new main rope 2B is attached to the rope fixing base 1
The rope shackle 7 on the counter side is fixed to the floor of the machine room by removing it from No. 1 and winding it around the suspension vehicle 5. Further, the new main rope 2B is wound around the suspension vehicle 8 to fix the car-side rope shackle to the machine room floor. Perform the above-mentioned series of main rope replacement work one by one. 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 main rope replacement work is completed.

[0009]

During the conventional main rope replacement work, since the main ropes 2A and 2B do not suspend the car 3 and the counter 4, the main rope 2A,
2B does not press the groove portion of the sheave 1, therefore the sheave 1
However, the rotation of the sheave 1 cannot be used to move the main ropes 2A and 2B even if the main ropes 2A and 2B rotate. Therefore, when moving the main ropes 2A, 2B, it is necessary to manually slide the main ropes 2A, 2B one by one along the groove portion of the sheave 1, which requires a lot of labor and a long time. There was a problem. 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 the winch 10 is a heavy item,
There was also a problem that the winch 10 had to be carried into the machine room manually.

The present invention has been made to solve the above problems, and is used when a method of replacing a main rope of an elevator is simplified and a method of replacing the main rope of an elevator is used. A pressure roller and a moving jig are provided.

[0011]

A method for replacing a main rope of an elevator according to the present invention comprises a step of fixing a counter to a support column and a method of suspending a car, a first rope fixing base and a second rope in a hoistway. A step of providing a fixing base and tensioning a guide rope between the first and second rope fixing bases, a step of pressing a plurality of old main ropes wound around a sheave with a pressure roller, Remove each old main rope from the suspension car and suspend the moving jig that moves up and down along the guide rope on all the old main ropes to suspend the moving jig on the old main rope. The process of cutting the old main rope just below the rope shackle and pulling out the cut end to the predetermined floor landing, and then storing the old main rope pressed by the pressure roller while rotating the sheave at the predetermined floor landing A step of increasing 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,
The process of stopping the rotation of the sheave and stopping the moving jig on the first rope fixing base and cutting the old main rope stored at the predetermined floor landing, and leaving the old rope left on the sheave side at the cutting point The 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 by pressing the sheave with a pressure roller, While guiding to the predetermined floor landing, continuously rotating the sheave to guide the tip of the new main rope to the predetermined floor landing, and stopping the rotation of the sheave to connect the old main rope and the new main rope. The process of 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 the moving jig unlocked from the first rope fixing base on the counter side. Hanging on each new main rope of And a step of feeding the new main rope into the hoistway to a position where the moving jig approaches the suspension vehicle of the counter while rotating the sheave by pressing the sheave, and stopping the operation of the sheave. At the same time, removing the moving jig from the new main rope and winding each new main rope around the suspension car of the counter, and attaching a car side rope shackle to the 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 the car suspension car;
Finally, there is a step of removing the pressure roller, the first and second rope fixing bases, and the guide rope.

Further, the pressure roller of the present invention has a roller portion that presses a plurality of main ropes wound around the sheave of the hoisting machine by the force of the spring, and when the main rope is replaced, The main rope is moved along with the rotation.

Further, the pressure roller of the present invention has a roller portion divided into a plurality of parts.

Further, the moving jig of the present invention is engaged with a pair of guide pipes which vertically move along a guide rope extending vertically in the hoistway and a plurality of main ropes provided between the guide pipes. It has a plurality of locking portions to be hung, and is hung on a plurality of main ropes when the main rope is replaced.

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

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. 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. Alternatively, the corresponding parts are designated by the same reference numerals, and the description thereof will be omitted.
Reference numeral 20 is an electromagnetic brake bracket, 21 is a pressure roller attached to the electromagnetic brake bracket 20 via a pressure roller mount 22, and the pressure roller 21 has a roller portion 21a whose surface is covered with hard rubber. , Roller section 2
It has a spring 21b that presses 1a toward the sheave 1.
23 is a number of locking portions 23a according to the number of main ropes 2,
A moving jig having a weight of about 30 kg having guide pipes 23b formed on both sides of the main body, and 24 penetrating both guide pipes 23b and having one end fixed to the first rope fixing base 11 and the other end. Part is the second rope fixing base 25
Fixed to the U bolt 25a of the first rope fixing base 11
And a second fixed base 25.

Next, a method of replacing the main rope will be described.
First, as a preparatory step for replacing the main rope 2, the counter 4 is fixed to the support column 13 and the car 3 is hung by a chain block attached to a machine room base (not shown).
The first rope fixing base 11 and the second rope fixing base 25 are fixed to the counter rail, and the guide rope 24 is stretched between the rope fixing bases 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 guide pipe 23b of No. 3. 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 once by the elastic force of 1b.

After the completion of the above-mentioned preparation stage, each old main rope 2A is removed from the suspension vehicle 5 of the counter 4, and all the old main ropes 2A on the counter 4 side are engaged with the locking portions 23a of the moving jig 23, respectively. 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 portion is pulled out to the top floor hall and connected to the rope winding jig 15. After that, while manually rotating the sheave 1 in the counterclockwise direction, the old main rope 2A is wound around the rope winding jig 15 and stored. Since the old main rope 2A is pressed by the pressure roller 21, the old main rope 2A
Without slipping in the groove portion of the sheave 1, the old main rope 2A is sent to the rope winding jig 15 side and wound up as the sheave 1 rotates. At the same time, the moving jig 23 ascends along the guide rope 24. When the moving jig 23 approaches the first rope fixing base 11, the counterclockwise rotation of the sheave 1 is stopped, and the moving jig 23 is attached to the first rope fixing base 11 by a rope (not shown). Stop with (see Fig. 4).

After that, the old main rope 2A is cut at the cutting portion E at the top floor landing, and the old main rope 2A left on the sheave 1 side and the new main rope pulled out from the rope pulling jig 12 at the cutting portion. 2B is connected. In addition, the old main rope 2A immediately above the moving jig 23 fixed to the first rope fixing base 11 by the rope is cut at the cutting portion F (see FIG. 5), and then the sheave 1 is manually moved clockwise. The cutting part F while rotating
As shown in FIG. 6, the sheave 1 is rotated clockwise manually to guide the tip of the new main rope 2B to the top floor hall. 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. Next, attach the rope shackles 7 on the counter side for all the new main ropes 2B. Each old main rope 2A left on the hoisting machine side when the old main rope 2A is cut at the cutting portions E and F is collected in the machine room.

Then, the rope shackle 7 on the counter side
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 manually rotating the sheave 1 further clockwise, the new main rope 2B is fed into the hoistway, and the moving jig 23 is lowered according to the feeding length as shown in FIG. When the suspension vehicle 5 is approached, the manual operation of the sheave 1 is stopped. Then, the moving jig 23 is removed from the new main rope 2B, and each new main rope 2B is wound around the suspension vehicle 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 wound 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 and 25, the guide rope 24, and the moving jig 23, the car 3 is hung by a chain block, and the support pillar 13 is countered. After removing from the car 13, the car 3 is operated at low speed up and down, and the main rope replacement work is completed.

Embodiment 2. FIG. 8 is a perspective view showing a pressure roller 31 of a split type. The pressure roller 31 has a roller portion 31a which is divided into two parts.
Stable pressurization is possible even when the wire diameter changes.

Embodiment 3. FIG. 9 is a perspective view showing the moving jig 33. In the moving jig 33 of this example, the main rope 2
The pulleys 33a have a number of pulleys 33a corresponding to the number of A and 2B, and guide pipes 33b formed on both sides of the main body.
By using a, the moving jig 33 can move smoothly.

As described above, according to the present invention,
When replacing the main rope, by using a pressure roller that eliminates relative movement between the sheave and the main rope, and a moving jig that is hung on the multiple main ropes, the sheave is rotated and the multiple main ropes are rotated. The ropes can be moved at the same time, which has the effect of significantly shortening the time required to replace the main rope and simplifying the work.

[Brief description of drawings]

FIG. 1 is an operation explanatory diagram of the present invention.

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

3 is a perspective view of the moving jig of FIG. 1. 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 showing another embodiment of the 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 rope, 2A old main rope, 2B new main rope, 3
Car, 4 counters, 5 and 8 suspension cars, 6 car side rope sockets, 7 counter side rope sockets, 11
1st rope fixed stand, 13 support pillar, 21 pressure roller, 21a roller part, 23 moving jig, 23a locking part, 23b guide pipe, 24 guide rope, 25 2nd rope fixed stand, 31 pressure roller , 31a roller part, 33 moving jig, 33a pulley, 33b guide pipe.

Claims (5)

[Claims] 1. A method of replacing a main rope for suspending a car and a counter, which is a method for replacing a main rope of an elevator, wherein the counter is fixed to a support pillar and the car is suspended, and a first rope fixing base in a hoistway is provided. Second
The step of installing a guide rope between the first and second rope holders and the step of pressing a plurality of old main ropes wound around the sheave with a pressure roller, Removing each old main rope from the suspension car of the counter, and locking all the old main rope with the locking part of the moving jig that moves up and down along the guide rope, and suspending the moving jig on the old main rope, The process of cutting the old main rope just below the car side rope shackle and pulling out the cut end to the predetermined floor landing, and then storing the old main rope pressed by the pressure roller while rotating the sheave at the predetermined floor landing Along with
Raising the moving jig along the guide rope to the vicinity of the first rope fixing base, and bringing the moving jig close to the first rope fixing base, and then stopping the rotation of the sheave,
The step of stopping the moving jig on the first rope fixing base and the cutting of the old main rope stored at the predetermined floor hall, and the old main rope and the new main rope left on the sheave side at the cutting point After connecting the step of connecting and cutting the old main rope on the moving jig, while rotating the pressing sheave with a pressure roller, while guiding the cut end to the predetermined floor landing,
Continue to rotate the sheave to guide the tip of the new main rope to the predetermined floor landing, and stop the rotation of the sheave to disconnect the old main rope and the new main rope to remove the tip of the new main rope. The counter side rope shackle to the section and fix the counter side rope shackle to the floor of the machine room and hang the moving jig unlocked from the first rope fixing base on each new main rope on the counter side. And the step of feeding the new main rope into the hoistway to the position where the moving jig approaches the suspension car of the counter while rotating the presser roller while pressing the sheave, and stopping the operation of the sheave At the same time, remove the moving jig from the new main rope, wind each new main rope around the suspension car of the counter, and attach the car side rope shackle to the car side end of the new main rope. Attaching the car-side rope shackle to the floor of the machine room and winding the new main rope around the car suspension car, and finally, the pressure roller, the first and second rope fixing bases. And a step of removing the guide ropes, respectively. 2. A roller unit for pressing a plurality of main ropes wound around a sheave of a hoisting machine by the force of a spring, and the main ropes are moved together with the rotation of the sheave when replacing the main ropes. A pressure roller characterized in that 3. The pressure roller according to claim 2, wherein the roller portion is divided into a plurality of parts. 4. A pair of guide pipes that move up and down along a guide rope that extends vertically in the hoistway, and a plurality of locking portions that are provided between the guide pipes and that are respectively locked to a plurality of main ropes. And a moving jig which is configured to be hung on a plurality of main ropes when the main rope is replaced. 5. The moving jig according to claim 4, wherein the locking portion is a pulley.