JPS62264183A - Method of main cable exchange construction of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method of replacing the main ropes of an existing elevator with new main ropes.

[Conventional technology]

FIG. 8 is a longitudinal cross-sectional view of a hoistway showing a conventional method for replacing the main rope of an elevator, as disclosed in Japanese Patent Application No. 59-206580.

In the figure, (1) is the machine room, +2) is the machine stand supported on the floor of the machine room (1), and (3) is the G upper base installed on the machine stand (21).

(4) is the driving sheave of the hoist (3), (5) is the machine room (1)
), (6) is the hoistway formed directly below the machine room (1), (7) is the rope hole leading from the hoistway (6) to the machine room (1), (8) is the hoistway The bit forming the bottom of (6), the cage that moves up and down while being guided by the guide tray (located in the ninth hoistway (6) and not shown), ul
l is the basket frame supporting the heel (9), (10a)
is the upper beam, al is the lifting rope whose upper end is connected to the machine stand (2), is hung down through the rope hole (7), and the chain block Q3 is attached to the lower end, and the chain block σ is the upper beam (1Oa ) is combined with 0 has one end raised (worker on top of 91, 14 has one end raised)
1Oa) (the figure shows the state cut at point E) is the existing main rope whose middle part is wrapped around the driving steel wheel (4), and a9 is connected to the other end of the existing main rope I. (The figure shows that it is cut at point F) A counterweight that moves up and down guided by a guide rail (not shown), α1 is a worker working using a stepladder aη, and the eel is installed on the bit (8) Buffer for baskets.

α Same as the old one, a buffer for the counterweight, and a counterweight a! The spacing piece inserted between 9 and buffer α9, 3υ is a landing on the top floor, and 3υ is a winch installed at landing r2p on the top floor for winding and rewinding the newly installed main rope.

C14 is the worker who operates the winch, and Ta is the winch@
This is a switch for operation.

The conventional elevator main rope replacement method is constructed as described above, and the existing main rope I is replaced with a new main rope in the following steps.

First, 9th worker a3 gets on top of the basket (19) and
9) and stop the car (9) so that the top of the car (9) and the top of the counterweight α9 are in the same position.

Rope holding rods (
A cage (not shown) is fixed to the cage (9) through this holding rod.
) and is connected to the counterweight α9.

Here, set the adjustment allowance for the holding rod to the maximum (this will lower the position of the car (9) and counterweight a9 a little).Next, drive the car (9) to the top floor. Stop at landing aυ. In this state, the gap A between the counterweight αS and the buffer sauce is measured. Also, I already have the main line! 14
Measure the current length x of 1. Now, the length of the newly installed main rope Ω is determined from the 9th equation.

L child (X+2D) - (B-A) where, B: Gap between counterweight αS and buffer 4 set after replacing existing main rope I: Length required for terminal treatment of newly installed main rope G The newly installed main rope @ will be cut to the length shown above. Also.

Insert a spacing piece (2) with the same length as one gap A between the counterweight a9 and the shock absorber 0.

Next, connect the upper end of the lifting rope 1υ to the machine base (2), let it hang down from the rope hole (7), connect the chain block αa to the lower end, and lift the chain block a to the upper end Q.
The car (91) is connected to the machine stand (21).

Then, in order to maintain the gap B at the counterweight a99 after restarting the operation, the chain block fia is operated to lift only the car (91 to CB-A).

After doing this, the points E and F on the top of the rope holding rod are
Cut one of the existing main ropes 1) 4. and.

Attach the existing rope holding rod to the terminal of the newly installed main rope @, and then attach the rope holding rod to the terminal of the new main rope (2) with the rope holding rod fixed to the α fathom terminal of the existing main rope on the car 19) side. Platform weight Q5
(for side use). Meanwhile, the other terminal of the newly installed main rope (2) (
(for car 19+ side) to the upper beam (1oa).

By operating the winch 2a, the lower end of the existing main rope I is lowered to the bit 183 while letting out the newly installed main rope @. The newly installed main rope is now wrapped around the driving sheave (41), and its lower end reaches the top of the counterweight a3. Connect to the weight Kasumi. Repeat the above operation for the number of newly installed main ropes Ω. Now.

The existing 1 rope I will be replaced with the new main rope.

After completing the above-mentioned work, remove the chain block US, the lifting rope αυ, and the spacing piece ■. and.

Drive the basket (9) and load the counterweight Qs with the basket (9).
Stop (9) so that one part of the two is in almost the same position.

After adjusting the tension of the newly installed Φ raw leaves, we will move on to regular operation.

In addition, it is a small mouse elevator with about 6 stops.

Since the weight of the main rope is light, there is no need for a winch for the 0 platform C1g+, and 0 workers (51, (13, all can be done by 3 people, but if one plate of the main rope becomes large, a winch is required.

In particular, the main rope has a hemp core soaked in oil.

It is slippery, and old main ropes may have broken wires, which can injure your hands, so for safety reasons, it is preferable to work with a winch.

[Problem that the invention seeks to solve]

In the conventional elevator main rope replacement method as described above, two workers (5), (13 ,Qυ
.

c! 4 has the problem that four people are required for the machine room (1), the top of the car (9), the bit (8), and the landing C1υ on the top floor.In addition, the stepladder CLI must be used in the pit (8).ILfA No.

There is also the problem that the work is dangerous.

This invention was made in order to solve the above-mentioned problems, and provides a method for replacing the main rope of an elevator, which allows the work to be carried out by a small number of workers, secures a wide working floor, and allows the work to be carried out safely. The purpose is to

[Means for solving problems]

The main rope replacement method for an elevator according to the present invention is as follows.

The car is stopped at a position that is almost in line with the top of its upper counterweight, and the car and counterweight are each suspended from guide rails above the car, and the car and counterweight are connected to the existing main rope. Cut each point, fix the terminal of the new main rope to the car-side terminal of the existing main rope, pull out the counterweight-side terminal onto the car or to a nearby landing, and connect the existing main rope and the new main rope. After the replacement, the terminals of the newly installed main rope are connected to the respective hems and counterweights.

[For production]

In this invention, the car and the counterweight are stopped at approximately the same position, and the main rope is replaced on the car.
There will be no need for pit and landing workers. Therefore, there is no need for stepladder work inside the pit.

〔Example〕

Figures 1 to 7 are diagrams showing one embodiment of the present invention.
Figure 2 is a vertical cross-sectional view of the hoistway, Figure 2 is a front view of the counterbalance weight, Figure 3 is a front view of the car, Figure 4 is a perspective view of the fixing fittings, Figure 5 is a plan view, and Figure 6 is a front view of the hoistway. Figure 7 and Figure 7 are vertical cross-sectional views of the hoistway for explaining the main rope replacement work.
顛、(10a)、α2〜(ILIII、Il
l, @, CI! 3. C5 is similar to the conventional device described above. - In the figure, @ is a car guide rail that is fixed to the wall of the hoistway (6) with a bracket (to) and is connected to each other with a batten ■ to guide the car (9), and G [l is the same (bracket t
A guide rail for weights that guides the counterweight 4, which is fixed with JI) and connected with a batten (to), and (to) is a fixing bracket attached to the back of the guide rail 0.3).

A plurality of rows of guide rail surfaces and (7) gripping tools are arranged on the fixed plate (to), and each is fastened with a bolt (to). Furthermore, a U-shaped hanging device (■) is attached to the lower end of the fixed plate (to). (To) is Hanging Ikoku and Uwabari (1)
Rope connecting 0a) via chain block aa.

(to) is the suspension tool ■ and the counterweight a9 (car frame (1) 1
) 7)' It is a rope that connects to the upper beam of the weight frame similar to the upper beam (10a) (not shown).

In the main rope replacement method for an elevator configured as described above, the main cables are replaced on the car +91 and in the machine room (1
, +13 are placed, and the existing main rope I is replaced with the newly installed main rope in the following procedure.

As mentioned above, one worker 1)3 gets on top of the car (9), sets the car (91) and the counterweight at the same position, and sets the adjustment allowance of the rope holding rod to the maximum. As shown in Figure 6, stop the car +91 at the top floor landing (Jl), measure the gap A between the counterweight +15 and the shock absorber al, and measure the current length X of the existing main rope ■. .

Then, the new gap B is determined and the length L of the newly installed main rope 4 is calculated. Next, as shown in Fig. 1, drive the car (9) again and stop the car (car +9) so that 91 and the counterweight (c) are in the same position. Now the basket (91
The work begins with the top of the floor as the work floor.

First, as shown in Fig. 2, fix the fixed metal i (to) on the weight guide rail ■ with a gripping tool (to) at a position 3 to 5 m above the counterweight a9, and then attach the rope (to) to the weight guide rail Suspend the counterweight a9. At this time, the rope (to)
It is desirable that the angle θ between the plane and the horizontal plane is as large as possible. This is to prevent bending force from acting on the guide rail ω as much as possible. The fixing metal fitting ■ is provided with a large number of gripping tools (to), so by selecting the appropriate gripping tools, the batten 6'! J and the bracket Ctt+ can be avoided and the guide rail (2) can be attached to the guide rail (2), and the angle ゛θ can be selected to be large.

Furthermore, since multiple rows of one gripper are provided, they can be used in accordance with the rail dimensions.

Next, as shown in Fig. 3, attach the fixing fitting a to the car guide rail Ω at a position of 3 to 5 m above the upper beam (10a), and secure the chain block α with the rope ′. The cage (9) is suspended through the cage. For details, see counterweight a.
The same is true for S. Then, as mentioned above, the chain block a is used to raise the heel (91) by (B-A). Now, the main work of replacing the main rope begins.

First, cut one of the existing main ropes at points E and F on the top of the rope holding rod of the basket (9) and the counterweight (15).
(You can cut it in two pieces at a time). The main rope α4 is usually composed of three or more ropes, and the safety factor is set to 10 or more, so it has sufficient strength. Therefore, it is safe enough to cut and replace one piece (or two pieces) at a time. Next, place the existing rope holding rod at the end of the newly installed main rope, and place it in the basket (
9) Attach the end of the newly installed main rope with one rope holding rod attached to the end of the existing main rope I on the side. On the other hand, the end of the existing main rope H on the side of the counterweight aS is pulled out to a nearby landing.

Operator α3 now moves the existing main rope I, which has been pulled out to landing area 0.
By operating switch 4, the newly installed main rope @ is reeled in by winch 4 and reeled in from winch Q.
Wrap the newly installed main rope around the driving sheave (4). and,
Connect both ends of the newly installed main rope to the uphill (1Oa) and counterweight (IS) respectively.Repeat the above operation for the number of newly installed main ropes (2). Cable I
will be replaced with a new main rope.

After completing the above work, remove chain block +13. With this, the basket (91) will be lowered slightly and the counterweight (l
! 1 will rise a little, so fix the fixing metal fittings on the four sides of the counterweight (
After removing the rope (to) and adjusting the tension of the newly installed main rope (■), normal operation will begin.

In this way, 2 workers (5;, αJ can be worked by 2 people, which greatly contributes to labor saving.
Safety is also improved because a large work floor above 9) can be secured. Furthermore, it is efficient because the main rope replacement work can be carried out on the car (9) at the same time on both the car (9) side and the counterweight α9 side. After replacing the main rope, the basket (9!
By moving rl <, the tension of the main rope can be adjusted and it is safe. This is because the fixing metal fittings Ω allow the holder 9) to be fixed at any desired position.

It can also be applied to high-lift elevators. In addition, 9 hoisting machines (
It has nothing to do with the type of item 3). The fixing bracket a can also be used for multiple types of guide rails (IS).For example, 13
In the case of h/m car guide rail (2), 8 noodle/m weight guide rail (to), Bh/m car and weight guide rail @, 31, the same product is used. Since it can be used and is not limited to being used for a car or for weights, it is highly efficient that there is no possibility of incorrect installation.

In the embodiment, the terminal of the existing main rope aS is pulled out to the landing, but it may be wound onto the car (91).

Also, real 1ifiF! In /1), the car (9) and the counterweight aS are fixed using the fixing metal fittings (to) to replace the main rope, but this is not the only option. For example, it can be applied to the case of measuring the weight jt of the car (9). In this case, the car (91) is stopped at an appropriate position and fixed with a fixing fitting, and the fixing fitting Ω and the car (9) are connected via a weight scale (not shown).And.

By removing the rope holding rod and loosening the chain block α, the weight of the car 191 can be measured using the Mlk meter.

〔Effect of the invention〕

As explained above, in this invention, the car and the counterweight are stopped at approximately the same position, and the main rope is replaced on top of the car, so that the work can be done by fewer workers.
It also has the effect of ensuring a wide work floor and allowing safe work.

[Brief explanation of drawings]

1 to 1 are diagrams showing an embodiment of the elevator main cable replacement method according to the present invention, in which FIG. 1 is a vertical cross-sectional view of the hoistway, FIG. 2 is a front view of the vertical cross-section of the hoistway, and Figure 3 is a front view of the car, Figure 4 is a perspective view of the fixing fittings, Figure 5 is a plan view, Figures 6 and 7 are vertical sectional views of the hoistway for explaining the main rope replacement work, Figure 8 The figure is a vertical cross-sectional view of a hoistway showing a conventional method for replacing the main rope of an elevator. In the diagram, (1) is the machine room, (4) is the driving sheave, (9) is the elevator (basket), α-hiro is the existing main rope, α-hiro is the elevator (balance weight), and the lie is the new installation. The main rope, the fin is the guide rail for the car, (1) m is the guide rail for the weight, and ko is the fixing metal fitting.

Claims (2)

[Claims] (1) Operate the car on the car, stop the car at a position where the top surface of the car and the top surface of the counterweight almost match, suspend the car and the counterweight on the guide rails, and drive the driving sheave in the machine room. Cut the connection points of the existing main rope wrapped around the car and the counterweight, fix the terminal of the new main rope to the car-side terminal of the existing main rope, and then After pulling out the terminal on the lifting platform weight side to the landing area on the car or near the car and replacing the existing main rope with the newly installed main rope, connect the terminals of the newly installed main rope to the car and the counterweight respectively. An elevator main rope replacement method that consists of the following steps: (2) The elevator main rope replacement method according to claim 1, wherein the main ropes are replaced one at a time or two at a time.