JPH1017223A - Control board replacing method for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control board replacing method for an elevator, which allows quick restarting of car operation, gives less troublesomeness to users, shorten the working time to a great extent, and generates less noises. SOLUTION: Before removing an existing control board 2, a new pull box 5 is installed on cylinder concrete 11 using a long stretching anchor 13 which penetrates the cylinder concrete 11 and is driven to a position where it is locked by the structural frame 10 of the floor of machine room, and upon installing a new control board 3 on the pull box 5, the old control board 2 is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for exchanging a control panel of an elevator, which is applied when replacing an existing control panel installed in a machine room of an elevator (elevator) with a new one.

[0002]

2. Description of the Related Art Various equipment and parts constituting an elevator are deteriorated with time when used for a long time, so that reliability and safety are hindered. In particular, the control panel installed in the machine room is an extremely important device that outputs electric signals such as a car registration signal and a floor display signal, and controls the operation of the car. This control panel incorporates a contactor, a switch coil, a contact point, etc., which are susceptible to aging.
There is a risk of causing serious accidents such as passengers being trapped in the car. Therefore, it is necessary to replace the existing control panel with a new control panel promptly when there is a concern about the malfunction.

Conventionally, such control panel replacement work has been generally performed in the following procedure.

That is, since a cable is connected to the existing control panel installed in the machine room from the hoistway side,
First, cut this cable near the existing control panel, remove the existing control panel, and then install the new control panel in the place where the existing control panel was installed, and move up and down the new control panel. Connect the cable from the roadside.
Normally, the equipment in the hoistway is also replaced when the control panel is replaced, so if the replacement work for the new control panel is completed, the car as a work floor will be used as the equipment and parts in the hoistway. Perform replacement work.

[0005]

The above-mentioned conventional control panel replacement method involves removing the existing control panel and then installing the new control panel. Until is completed, the car cannot be operated. In addition, even if the operation of the car is resumed, it is usually necessary to replace the equipment in the hoistway. Therefore, when such a conventional technique is applied, general use of the elevator must be prohibited for about three days, and during that time, the user is inconvenienced.
In particular, in the case of an office building or an apartment house where only one elevator is installed, if the elevator cannot be used for such a long period of time, it will cause a great deal of inconvenience. .

In addition, an existing pull box, which is installed on a frame of a machine room floor to install an existing control panel, is often finished by pouring cinder concrete around after installation. The existing pull box is embedded in the cinder concrete laid on the skeleton. Therefore, when removing such an existing pull box, it is necessary to perform complicated and loud work of scraping the surrounding cinder concrete, and when installing a new pull box in the place where the existing pull box was removed. Must be repaired with a mortar or the like to create a gap created by scraping cinder concrete. Therefore, when the existing pull box is surrounded by cinder concrete, the application of the conventional control panel replacement method greatly increases the work time, and the noise tends to bother building residents and the like. There was a point.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object that the operation of a car can be restarted promptly so that there is little inconvenience to the user and the work time is greatly reduced. An object of the present invention is to provide a method of exchanging a control panel of an elevator, which can be shortened and noise is hardly generated.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to install a new pull box in a machine room before removing an existing control panel, install the new control panel on the new pull box, and then remove the existing control panel. Is achieved by removing In this way, with the existing control panel running,
It is possible to install the new control panel and connect temporary wiring cables to it, so that even if the operation of the existing control panel is stopped prior to removal, the new control panel can be operated immediately. The operation of the car can be resumed promptly. Therefore, it becomes possible to carry out the work of exchanging the equipment in the hoistway using the car as the work floor simultaneously with the work of removing the existing control panel.

In the case where the pull box for the existing control panel is embedded in the cinder concrete, a perforation operation is performed to penetrate the cinder concrete to reach the frame of the machine room floor, and then the elongate work is performed. If the bolt anchor is driven to the position where it is locked to the skeleton and the new pull box is installed on the cinder concrete with this long bolt anchor, a sufficiently large installation strength is secured for this new pull box. And there is no need to scrape or repair the cinder concrete.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the method of the present invention will be described with reference to the drawings.

First, the overall structure of an elevator to which the method of the present invention is applied will be briefly described. As shown in FIG.
A control panel (existing control panel) 2, a hoisting machine 7, and the like are disposed in the upper machine room 1. A hoistway 14 is provided with a car 15 and a counterweight 19 connected by a rope 18. It is suspended. Since the rope 18 is wound around the sheave 7A of the hoisting machine 7, when the electric motor 6 of the hoisting machine 7 controlled by the control panel 2 drives the sheave 7A to rotate, the rope 18 is The car 15 moves up and down in the hoistway 14. Also, in the hoistway 14,
In order to transmit various electric signals such as a call registration signal of the car 15 and a floor display signal, the tower wiring 16 and the tail cord 1
7 are provided and these are routed to the machine room 1 and connected to the control panel 2.

In such an elevator, the operation of replacing the existing control panel 2 which has deteriorated over time with a new one is performed in the following procedure.

First, as shown in FIG. 1, a new control panel 3 is installed in a place different from the place where the existing control panel 2 is installed in the machine room 1, and a power line (not shown) is connected to the new control panel 3. Connect the ground wire. Further, the temporary wiring cable 9 attached to the newly installed control panel 3 is routed near the electric motor 6 of the hoisting machine 7. Then, the existing control panel 2 and the electric motor 6
In a state where the operation of the temporary wiring is stopped,
Is connected to the motor 6, and then the operation of the new control panel 3 and the motor 6 is started. Therefore, the car 15 whose operation is controlled by the existing control panel 2 is replaced with the temporary wiring cable 9.
Although the operation becomes impossible for a short time (about 10 minutes) necessary for connecting the motor to the electric motor 6, the operation is immediately controlled by the new control panel 3. Therefore, after this, while removing the existing control panel 2 and the existing cable in the pipe 8 in the machine room 1, at the same time, the hoistway 14 using the car 15 capable of low-speed operation as a work floor is simultaneously operated. It is possible to carry out an exchange work of equipment and parts inside the tower, for example, an exchange work of the tower wiring 16, the tail cord 17 and the car equipment.

When the existing control panel 2 is removed in this way, a wiring duct 8A is installed between the existing pull box 4 and the new control panel 3 as shown in FIG.
A main wiring cable (not shown) is provided in the inside and the pipe 8, and when the connection of the cable is completed,
The pull box cover 4A is attached to the existing pull box 4. Thereafter, after removing the temporary wiring cable 9 and attaching the permanent wiring cable to the motor 6 once stopped, the operation of the motor 6 is started, so that the temporary wiring is removed from the temporary wiring. Switching to the installation wiring is completed. As a result, even after the existing control panel 2 is replaced with the new control panel 3, the existing pull box 4 and the existing piping 8
Can be used as a relay box or piping for permanent wiring. The operation stoppage time of the electric motor 6 required for removing the temporary wiring cable 9 and attaching the permanent wiring cable is about 10 minutes, and then immediately after the temporary wiring cable is connected. The operation of the car 15 can be resumed.

As described above, in the present embodiment, the operation of installing the new control panel 3 and the operation of connecting the temporary wiring cable 9 and the like thereto can be performed while the existing control panel 2 is operated. Even if the operation of the existing control panel 2 is stopped prior to the removal, the new control panel 3 can be operated immediately, so that the operation stoppage time in which the operation of the car 15 must be stopped becomes extremely short. I have. Moreover, in the present embodiment, the replacement work of the equipment in the hoistway 14 using the car 15 as a work floor can be performed simultaneously with the removal work of the existing control panel 2 and the like. Since the box 4 and the existing pipe 8 can be utilized and the removal is unnecessary, the work efficiency is good and the work content is simplified. Therefore, the overall work time can be significantly reduced as compared with the prior art, and there is no need to prohibit the general use of the elevator for a long time, thereby completing the work without causing much trouble to the user. Can be.

In this embodiment, the new pull box 5 for the new control panel 3 is installed using a long bolt anchor 13 which reaches the frame 10 on the floor of the machine room as shown in FIGS. I have.

That is, as shown in FIG. 3, the existing pull box 4 is embedded in the cinder concrete 11 laid on the frame 10 of the machine room floor.
Since a sufficient tensile strength (installation strength) cannot be ensured only by driving a bolt anchor into the cinder concrete 11, in the present embodiment, when the new pull box 5 is installed, it reaches the frame 10 through the cinder concrete 11 in this embodiment. After the drilling work is performed, the long bolt anchor 13 is driven to a position where the long bolt anchor 13 is directly locked to the frame 10, and the nut 13C is fastened. 5 was installed on the cinder concrete 11. In this way, the normal bolt anchor 12
Thus, the same pulling strength as that obtained when the existing pull box 4 is installed on the skeleton 10 can be obtained, so that the new pull box 5 can be installed firmly.

As shown in FIG. 4, the long bolt anchor 13 employed in this embodiment includes a long sleeve 13A having a length substantially equal to that of the bolt portion. The reason is,
As shown in FIG. 5, if a long bolt anchor 13 having a length similar to that of a normal bolt anchor is used as the sleeve 13B, the long bolt anchor 13 is damaged by a gap created between the sleeve 13B and the cinder concrete 11. This is because a large bending moment, which causes the bending, is likely to be generated. In other words, if the long bolt anchor 13 having the long sleeve 13A is used as in the present embodiment, no gap is generated between the long bolt anchor 13 and the cinder concrete 11, so that the bending moment can be reduced and damage can be prevented. .

Further, such a long bolt anchor 13
If the new pull box 5 is to be installed on the frame 10 on the floor of the machine room using a normal bolt anchor 12 as shown in FIG. 6 without using slab concrete, the cinder concrete 11 is scraped off and installed. Later, the defective portion of the cinder concrete 11 must be repaired with the mortar 11A, so that a very complicated and noisy operation is required. Therefore, if the new pull box 5 is installed on the cinder concrete 11 using the long bolt anchor 13, the working time and the generation of noise can be significantly reduced.

[0020]

The present invention is embodied in the form described above, and has the following effects.

[0021] Since the installation work of the new control panel can be performed while the existing control panel is in operation, even if the operation of the existing control panel is stopped prior to removal, the new control panel is immediately operated and the car is operated. Service can be resumed. Therefore, at the same time as the removal work of the existing control panel, it is possible to replace the equipment in the hoistway with the car as the work floor, greatly shortening the work time and inconveniencing users. It is less likely to apply.

In the case where the pull box for the existing control panel is embedded in the cinder concrete, drilling work is performed so as to penetrate the cinder concrete and reach the frame of the machine room floor, and then perform a long operation. If the bolt anchor is driven to the position where it is locked to the skeleton and the new pull box is installed on the cinder concrete with this long bolt anchor, a sufficiently large installation strength is secured for this new pull box. In addition, since it is not necessary to scrape or repair the cinder concrete, the working time can be further reduced and noise is less likely to be generated.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a state in which a new control panel is installed before removing an existing control panel in the present embodiment.

FIG. 2 is an explanatory diagram showing a state after removing an existing control panel in the present embodiment.

FIG. 3 is an explanatory diagram showing an installation structure of a new pull box and an existing pull box in the present embodiment.

FIG. 4 is an enlarged cross-sectional view of the installation structure of the new pull box shown in FIG.

FIG. 5 is a comparative example of a pull box installation structure.

FIG. 6 is another comparative example of the pull box installation structure.

FIG. 7 is an explanatory diagram showing an overall configuration of an elevator to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine room 2 Existing control panel 3 New control panel 4 Existing pull box 5 New pull box 6 Electric motor 7 Hoisting machine 8 Piping 8A Wiring duct 9 Temporary wiring cable 10 Body 11 Cinder concrete 13 Long bolt anchor 13A Long sleeve 13C nut 14 hoistway 15 car

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Fukuzawa 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd.

Claims (3)

[Claims] In a control panel replacement method for replacing an existing control panel of an elevator with a new control panel, a new pull box is installed in a machine room before removing the existing control panel, and the new control panel is installed on the new pull box. And then removing the existing control panel. 3. A method for replacing a control panel of an elevator. 2. The method according to claim 1, wherein the drilling work is performed after penetrating the cinder concrete laid on the frame of the machine room floor and surrounding the existing pull box to reach the frame. A method for exchanging a control panel of a lift, wherein a long bolt anchor is cast to a position where the long bolt anchor is locked to the frame, and the new pull box is mounted on the cinder concrete with the long bolt anchor. 3. The method according to claim 2, wherein the long bolt anchor includes a long sleeve having substantially the same length as the bolt portion.