JPH01285571A - Method of replacing guide rail for 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] The present invention relates to a method for replacing an elevator guide rail.

[Conventional technology]

Conventionally, as disclosed in Japanese Unexamined Patent Publication No. 16995/1983, a work floor is attached to the top of the car, and
A hand-operated device that can operate the elevator control panel via an operating cable is installed, and workers on the work floor can raise and lower the work floor by operating the hand-held device, and can remove equipment in the hoistway without a fixed scaffold. Something like this has been proposed.

[Problem to be solved by the invention]

However, although the above-mentioned conventional proposal clearly states the use of a working platform that moves within the hoistway, it does not mention a specific method for replacing the guide rail using this working platform. In particular, there remained issues regarding how to replace the guide rails that guide the counterweights.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an elevator guide rail replacement method that allows guide rails to be replaced safely and quickly using a work floor installed in a car.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a winch for unloading on the floor where equipment is carried in and out when replacing guide rails using a work floor installed on a car and raised and lowered. Before and after the installation process, a guide rope is stretched between the guide rope fittings installed at the top and bottom of the hoistway, and this guide rope is engaged with the guide mechanism attached to the counterweight. , the predetermined guide rail was removed from the rail bracket while being supported by the winch, the guide rail was carried out from the hoistway to the loading/unloading floor by the winch, and this process was repeated to connect the rails. All of the multiple guide rails are carried out, and then the new guide rail is carried to a predetermined position in the hoistway using the above-mentioned winch, and after centering, it is attached to the rail bracket. By repeating this process, multiple new guide rails can be installed. After everything was connected and fixed, the guide rope was removed, and if necessary, the guide rope mounting metal was also removed.

[Effect]

That is, in the present invention, a guide rope is stretched before the guide rail removal work is performed, and this guide rope guides the counterweight, so that it is possible to raise and lower the carriage with the work floor attached. It is possible to safely and quickly replace the guide rail for the counterweight while

〔Example〕

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

Figures 1 to 3 are for explaining one embodiment of the present invention. Figure 1 is a schematic diagram of the main part showing the replacement work of the counterweight guide rail, and Figure 2 is the balance weight and guide rope. FIG. 3 is a schematic cross-sectional view of the hoistway.

In these figures, the top 2 of the hoistway 1 has a hoist 8!
4 and a machine room 3 in which a control panel (not shown) is installed, and this hoistway 1 and each floor 5A, 5B, . . .
..., 5N, and a landing door 6 is installed between each of them. Further, on the wall surface of the hoistway 1, a plurality of car guide rails 7 connected in two rows and a plurality of counterweight guide rails 8 connected in two rows are mounted via rail brackets 9. installed. These guide rails 7.8 are each
The car 10 and the counterweight 11 are used to guide the lifting and lowering of the car 10 and the counterweight 11 in the hoistway l, and are suspended from the hoisting machine 4 via the main rope 12 in a hanging manner. , are raised and lowered in mutually opposite directions along guide rails 7.8.

Furthermore, when performing the guide rail replacement work, a pair of guide rope attachment metal holders 14 are provided at the top 2 of the hoistway l, and a pair of guide rope attachment metal holders 15 are provided at the bottom (pit) 13. Two guide ropes 16 stretched between the mounting bolts 14, 15 are each set to movably engage a guide mechanism 17, 18 mounted on the counterweight 11. In addition, a work floor 19 is installed above the car 10, and a floor 5 where equipment is carried in and out is installed.
A cargo unloading winch 20 is installed at the N landing.

Next, the replacement work of the counterweight guide rail 8 will be specifically explained.

First, the work floor 19 is assembled on the top of the car 10 (step 1), and the unloading winch 20 is installed at the landing of the equipment loading/unloading floor 5N (step 2). Then, guide rope attachments 14 and 15 are attached to the top 2 and bottom 13 of the hoistway 1, respectively (step 3).

Next, the guide mechanisms 17 and 18 are attached to the counterweight 11, and the two guide ropes 16 that engage with these guide mechanisms 17 and 18 are stretched between the attachments 14 and 15 (step 4). Via the mechanism 17,18 the counterweight 11 is movable along the guide rope 16.

Then, after supporting the guide rail 8 located on the top floor with the lifting row 121 of the lifting winch 20, loosen the bolts fixing the guide rail 8 to the rail bracket 9, and loosen the connecting bolts. Remove the connecting member (not shown) and attach the guide rail 8 to the unloading winch 2.
0 and take it out from the hoistway 1 to floor 5N. Thereafter, in the same manner, the lower guide rails 8 are sequentially carried out to the floor 5N, and when all the guide rails 8 for one row have been carried out, the guide rails 8 in the other row are sequentially carried out in the same manner ( Step 5), Note that this step 5 is performed on the work floor 1.
Do this while moving 9.

After that, one new guide rail for the counterweight is suspended to the lowest end of the hoistway l by the lifting row 121 of the unloading winch 20, and after centering it, it is fixed to the rail bracket 9, and the same goes as follows. New guide rails are sequentially taken out and fixed upwards, and when one row is completed, new guide rails are taken out and fixed one after another from the bottom end for the other row (Step 6). Note that this step 6 is also performed while moving the work floor 19.

After all the guide rails 8 for the counterweight have been replaced in this way, remove the guide rope 16 and further remove the guide rope mounting hardware 14 and 15 (Step 7), however,
These fittings 14,15 may be left in place, especially if they do not get in the way.

In this way, in the above embodiment, even if the guide rail 8 is removed, the counterweight 11 is guided by the guide rope 16, so that the counterweight 11 that moves in the opposite direction to the work floor 19 is Raising and lowering is always carried out without any trouble, and therefore, the work of replacing the counterweight guide rail can be carried out safely and quickly while raising and lowering the work floor 19 as appropriate.
d Note that the above steps 1.2.3 are in any order, and any step may be performed first, and the above step 5.
．． In 6, the removal work of the guide rail 8 and the installation of a new guide rail do not necessarily have to be performed one row at a time, but may be performed simultaneously for two rows.

When the work of replacing the counterweight guide rail is completed, while moving the work floor 19, the work of removing one car guide rail 7 and installing a new guide rail there is repeated. Replace the guide rail 7 with a new one. Note that the replacement work for the car guide rail 7 may be performed before the replacement work for the counterweight guide rail 8.

〔Effect of the invention〕

As explained above, in the present invention, even when the guide rail is removed, the counterweight is guided by the guide rope, so the guide rail can be replaced safely and quickly while raising and lowering the work floor as appropriate. be able to.

[Brief explanation of the drawing]

Figures 1 to 3 are for explaining one embodiment of the present invention. Figure 1 is a schematic diagram of the main part showing the replacement work of the counterweight guide rail, and Figure 2 is the balance weight and guide rope. FIG. 3 is a schematic cross-sectional view of the hoistway. 1...Hoistway, 2...Top, 5N...
...Equipment loading/unloading floor, 7...Guide rail for car, 8...Guide rail for counterweight, 9.Old...Rail bracket, 10...・
Cart, 11... Counterweight, 13...
...Bottom, 14.15...Guide rope installation metal smell, 16...Guide rope, 17°18.
...Guide mechanism, 19 ...Working floor, 20
...Winch for unloading. Figure 1

Claims (1)

[Claims] A plurality of guide rails fixed to the hoistway wall via rail brackets are connected in the longitudinal direction, and these guide rails are installed in the car and guide the lifting and lowering of the car and counterweight. When replacing the above-mentioned guide rail using a work floor that goes up and down, winches for lifting cargo are installed at the top and bottom of the hoistway before and after the process of installing winches on the floor where equipment is carried in and out. A guide rope is stretched between the guide rope mounting brackets, and this guide rope is engaged with a guide mechanism attached to a counterweight. After that, the designated guide rail is supported by the winch and removed from the rail bracket. This guide rail is carried out from the hoistway to the loading/unloading floor using the winch, and by repeating this process, all the connected guide rails are carried out, and then the new guide rail is Use a winch to transport it to a specified position in the hoistway, center it, and attach it to the rail bracket. Repeat this process to connect and fix all the new guide rails. After that,
A method for replacing an elevator guide rail, characterized in that the guide rope is removed and, if necessary, the guide rope attachment metal smell is also removed.