JP2001220078A - Elevator repair method - Google Patents

Abstract

(57) [Summary] [Problem] Without removing all existing elevators,
Provided is a method of repairing an elevator that allows existing equipment, such as a car, a counterweight, and a guide rail, to be used and updated to a state-of-the-art elevator. A sheave (9, 10) is mounted on an existing car (2) and a counterweight (5), respectively, and a new hoisting machine (13) arranged above the hoistway (1) via the sheaves (9, 10). The ends 11a and 16b of the main cable 11 are fixed to end brackets 17 fixed to the existing machine tables 19a and 19b supporting the hoisting machine 13 around the cable 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing an elevator.

[0002]

2. Description of the Related Art A conventional general elevator repair method will be described with reference to FIG. 6 which is a longitudinal sectional view of an elevator and FIG. 7 which is a plan view of an elevator machine room.

A guide rail 3 for a car for guiding the car 2 by a plurality of brackets 4 and 7 and a guide rail 6 for a counterweight for guiding the counterweight 5 are fixed to the hoistway 1. The rails 3 and 6 extend from the bottom to the vicinity of the top of the hoistway 1. An elevator machine room 30 is formed in the upper part of the hoistway 1. In the elevator machine room 30, a hoisting machine 40 including a sheave 41, a warp wheel 42, and an electric motor 43 is installed on the machine base 19. I have. In the elevator machine room 30, a control device 44 for electrically controlling the speed and operation of the car 2 and a car 2 which detects an abnormal acceleration of the car 2 as shown in FIG. A governor 21 for operating an emergency stop device (not shown) is disposed. The suspension weight (not shown) is provided on the upper part of the counterweight 5 with the car 2, and both ends of the main rope 11 are fixed via the sheave 41 and the warp wheel 42 of the hoisting machine 40, respectively. . Thus, the hoisting machine 4
The car 2 is configured to move up and down along the guide rails 3 via the main rope 11 by the drive of 0.

In such an elevator, renovation work is performed for the purpose of updating running performance, display control and the like to the latest one, and reducing power consumption and waiting time. The conventional rehabilitation methods to be implemented are: car 2, balance weight 5, guide rail 3,
6 and the like use existing products, and replace the drive devices such as the control device 44 and the hoisting machine 40 installed in the elevator machine room 30 with the latest type.

[0005]

In recent years, in condominiums and other condominiums, common areas such as stairs have not been included in the calculation of the floor area ratio of buildings. In elevators, drive devices have been installed in hoistways. Since the deregulation measures such as may be taken, it is possible to arrange the driving device in the hoistway without forming the elevator machine room 30, and to lift the elevator without imposing a load on the building side. It has been adopted as a standard type.

[0006] However, when an existing elevator is modified to an elevator without an elevator machine room, it is difficult to arrange each device due to insufficient plane dimensions in the hoistway, or the load of the elevator is structurally reduced. In order to upgrade to an elevator without an elevator machine room, it was necessary to remove a set of existing elevators and install a new elevator because the equipment itself could not bear the burden.

An object of the present invention is to provide an elevator capable of being upgraded to a state-of-the-art elevator by using existing equipment such as a car, a counterweight, and a guide rail without removing all of the existing elevator. To provide a refurbishment method.

[0008]

According to the present invention, in order to achieve the above object, a guide rail is erected on a hoistway, and a car and a counterweight which are respectively guided along the guide rail are connected by a main rope. Then, the driving device around which the main rope is wound is arranged in an elevator machine room above the hoistway, and the control device and the elevator renewing method for updating the driving device include the above-described car, the counterweight, and the guide rail. Existing equipment is diverted, a sheave is attached to the upper part of the above-mentioned car and the counterweight, and the newly installed drive device is arranged on a machine table arranged above the hoistway, and the main rope is the sheave. And is wound around the driving device through

According to the method for repairing an elevator according to the present invention, the existing car is used for the car, the counterweight and the guide rail, and a sheave is attached to the upper part of the car and the upper part of the counterweight, respectively. The main cable is wrapped around the newly installed drive unit, which allows the elevator machine room to be made substantially smaller to form an empty space, and the entire elevator can be removed without removing all existing elevators. Basket, balance weight,
Existing equipment such as guide rails can be diverted and updated to the latest elevators with new drive units.

[0010]

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

First, the elevator before renovation is constructed as shown in FIG. 6, and a hoistway 1 has a car guide rail 3 for guiding a car 2 and a counterweight guide for guiding a counterweight 5. Each of the rails 6 is fixed by a plurality of brackets 4 and 7, and these guide rails 3 and 6 extend from the bottom to the vicinity of the top of the hoistway 1. An elevator machine room 30 is formed in the upper part of the hoistway 1, and a pair of machine stands 19 arranged on the floor of the elevator machine room 30 along the depth direction of the hoistway 1.
And an existing hoisting machine 40 mounted on the machine base 19;
A separate control device 44 is provided.

FIG. 1 is a longitudinal sectional view of an elevator adopting an elevator repair method according to an embodiment of the present invention.

In renovating the elevator shown in FIG. 6 described above, the car 2 in the hoistway 1, the counterweight 5,
The guide rails 3 and 6 fixed by the brackets 4 and 7 and the machine base 19 in the elevator machine room 30 use existing products.
Remove other major components. Then, car 2
The hanging plates (not shown) provided on the upper part of the counterweight 5 are modified, and the sheaves 9 and 10 are attached.

On the other hand, in the machine room 30, as shown in FIG. 2 which is a plan view, an existing pair of machine tables 19a, 19b
Pedestals 18a, 18b,
18c are arranged discretely, and
A plurality of hoisting pedestals 14a, 14b are provided on top of a, 18b, 18c so as to bridge them, and there is no machine room having a sheave 12 above the pedestals 14a, 14b. A state-of-the-art hoisting machine 13 employed in a standard elevator is mounted.

The end bracket 17a is arranged so as to bridge between the pedestals 18a and 18b.
end bracket 17b so as to bridge between b and 18c.
The main rope 11 wound around the sheave 12 of the hoisting machine 13 has one end 16a fixed to the end bracket 17a of the elevator machine room 30 via the sheave 9 of the car 2; The other end 16b is fixed to the end bracket 17b via the sheave 10 of the counterweight 5. Here, the end brackets 17a and 17b are divided into two parts.
b can be omitted.

The newly installed control device 20 is mounted and disposed on the front side of the existing machine tables 19a and 19b in the elevator machine room 30, and the elevator is operated by the control device 20 during maintenance work. In this case, since the movement of the hoisting machine 13 as a driving device can be visually observed, there is no problem in safety. This control device 20 may be arranged not only above the existing machine bases 19a and 19b but also around it. In addition, at the time when the existing elevator was installed, the Building Machinery Law stipulates that the elevator machine room 30 needs an area at least twice the projected area of the hoistway, and has a size corresponding to this.
However, since it is different at present, if the control device 20 is arranged near the existing machine stand 19 and the wall 24 with the door is provided in the elevator machine room 30, the elevator space is provided by providing the customer with an empty space 30a. It can be used for other purposes other than the above.

As described above, the car 2, the counterweight 5, the guide rails 3, 6, and the machine stand 19 are diverted from existing products only with a slight modification, and the sheave 9 is provided above the car 2.
And a sheave 10 is provided above the counterweight 5 and a state-of-the-art hoisting machine 13 employed in a standard type elevator having no machine room is arranged. As the elevator is wound around the hoisting machine 13, the existing elevator of the main equipment such as a car, a counterweight, a guide rail, etc. is diverted without removing the entire existing elevator, and the latest elevator with a new driving device is used. Can be updated.

Further, since the car 2 is diverted, the governor 21 installed in the elevator machine room 30 can also be diverted, and since the core of the car 2 does not change even after the remodeling, a landing-side frame (not shown) The landing door can also be diverted as it is. In addition, in the case of a standard type elevator without a machine room, it is assumed that the load of the elevator is not burdened on the building side, but in the case of renovation, the existing building has already been designed considering the load, There is no problem even if a load acts on the building via the existing machine stands 19a and 19b. Furthermore, the empty space 30a can be formed in the elevator machine room 30, and the empty space 30a can be used for other uses than the elevator, so that the effective floor area in the building can be expanded. And the asset value of the building is improved.

FIG. 3 is a sectional view showing an elevator machine room employing an elevator repair method according to another embodiment of the present invention. The car 2, the counterweight 5, the guide rails 3, 6, and the machine stand 19 are provided with sheaves at the top of the car 2 and the counterweight 5, respectively, while diverting existing products. The modification for arranging the upper unit 13 is the same as that of the previous embodiment, and the detailed illustration of the same unit is omitted.

In the above embodiment, the newly installed control device 20
Is arranged in the elevator machine room 30, but in this embodiment, since there is an installation space for the control device 20 in the hoistway 1, the control device 20 is arranged on the side wall portion in the hoistway 1. , And is supported by a mounting bracket fixed to the guide rail 3 or the guide rail 6. As shown in the drawing, the surroundings of the existing machine base 19 are covered with a surrounding member 25 such as an iron plate, and the inside of the surrounding member 25 can be regarded as an extension of the hoistway 1.

According to such a configuration, since the control device 20 is not installed in the elevator machine room 30, the empty space 30b in the elevator machine room 30 is smaller than the empty space 30a described above. Wider and more effective use.

FIG. 4 is a sectional view showing an elevator machine room employing an elevator repair method according to still another embodiment of the present invention. The car 2, the counterweight 5, and the guide rails 3, 6 are provided with sheaves above the car 2 and the counterweight 5, respectively, while diverting existing products, and the latest hoisting machine 13 is installed in the elevator machine room 30. The modification to be arranged is the same as in the previous embodiment, and detailed illustration of the same part is omitted.

In this embodiment, the control device 20 is disposed on the side wall of the hoistway 1 and is supported by the mounting bracket fixed to the guide rail 3 or the guide rail 6, and is disposed in the elevator machine room 30. The existing machine tables 19a and 19b that have been removed are also removed. Thereafter, a machine stand 27 is fixed near the tops of the existing guide rails 3 and 6 as shown in the drawing, and the hoisting machine 13 is supported on the machine stand 27 via the hoisting machine support 14 and the end is provided. Bracket 17
a and 17b are arranged.

With such a configuration, if a sufficient space is secured above the hoistway 1, the hoisting machine 13 and the end brackets 17a, 17b can all be arranged in the hoistway 1. On the other hand, if a sufficient space cannot be secured, the upper portion of the hoisting machine 13 is made to protrude toward the elevator machine room 30 as shown in the figure, and the surrounding area is covered with a surrounding member 26 such as an iron plate. The inside of the member 26 is regarded as an extension of the hoistway 1. According to this embodiment, the empty space 3 in the elevator machine room 30
0c can be wider than the empty space 30b shown in FIG.

FIG. 5 is a plan view of an elevator machine room employing an elevator repair method according to still another embodiment of the present invention. The car 2, the counterweight 5, the guide rails 3, 6 and the machine stands 19 a, 19 b, 19 c are diverted from the existing ones, while the latest hoisting machine 13 is arranged in the elevator machine room 30. It is the same as the embodiment, and the same reference numerals are given to the same components as those in the embodiment shown in FIG. 1, and the detailed description is omitted.

In the above embodiment, the case where the existing elevator is configured by 1: 1 roping has been described. In the present embodiment, the case where the existing elevator is configured by 2: 1 roping will be described. . In this case, the end bracket 22 for fixing the end of the main rope
For a and 22b, existing products can be used. At least two of the existing machine bases 19a, 19b, 19c are bridged with cradles 23a, 23b, and are bridged over the cradles 23a, 23b. The pedestals 14a and 14b are arranged, and the pedestal 14
A newly installed hoisting machine 13 is fixed to the upper part of the a and b.

Although the structure inside the hoistway is the same as that shown in FIG. 1, the sheaves 9 and 10 of the car 2 and the counterweight 5 can be constructed by using existing products. The renovation work can be performed with a smaller modification than the embodiment described with reference to FIG. Further, as in the case of the embodiment shown in FIG. 1, an empty space 30a is formed in the elevator machine room 30, and the empty space 30a is formed.
Can be used for purposes other than elevators, so that the effective floor area in the building can be increased.

[0028]

As described above, the repair method of the elevator according to the present invention is based on the fact that the existing car is used for the car, the counterweight and the guide rail, and the sheaves are attached to the upper part of the car and the upper part of the counterweight, respectively. Since the main cable is wound around a newly installed drive unit disposed above the hoistway via a car, the elevator machine room can be substantially reduced to form an empty space, and the newly installed drive unit can be formed. Can be updated to a state-of-the-art elevator.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an elevator employing an elevator repair method according to an embodiment of the present invention.

FIG. 2 is a plan view showing an elevator machine room of the elevator shown in FIG.

FIG. 3 is a cross-sectional view showing a main part of an elevator employing an elevator repair method according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating a main part of an elevator employing an elevator repair method according to still another embodiment of the present invention.

FIG. 5 is a plan view showing an elevator machine room of an elevator employing an elevator repair method according to still another embodiment of the present invention.

FIG. 6 is a sectional view showing a conventional elevator.

FIG. 7 is a plan view showing an elevator machine room of the elevator shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Riding car 3,6 Guide rail 5 Counterweight 9,10 Sheave 11 Main rope 12 Sheave 13 Hoisting machine 14 Hoisting machine pedestal 17a, 17b End bracket 18a, 18b Cradle 19a, 19b Machine stand Reference Signs List 20 control device 25 surrounding member 30 elevator machine room 30a to 30c empty space

Claims (5)

[Claims] 1. A guide rail is erected on a hoistway, a car and a counterweight are guided along the guide rail, and a counterweight is connected by a main rope. Placed in the elevator machine room,
In the repair method of the elevator for updating the control device and the driving device, the car, the counterweight and the guide rail are diverted existing products, and a sheave is attached to the upper portion of the car and the counterweight, respectively. A method of repairing an elevator, wherein the newly installed drive device is disposed on a machine table disposed above the hoistway, and the main rope is wound around the drive device via the sheave. 2. The method according to claim 1, wherein the machine stand uses an existing product disposed in the elevator machine room. 3. The elevator machine room according to claim 1, wherein an end of the main rope via the two sheaves attached to the car and the counterweight is supported by an existing machine platform in the elevator machine room. An elevator repair method characterized by the following. 4. The renovation of an elevator according to claim 1, wherein the periphery of the machine stand is surrounded by a surrounding member, and other empty spaces in the elevator machine room are opened for other uses. Method. 5. The method according to claim 1, wherein a machine base is fixed near an upper portion of the hoistway of the guide rail, and both ends of the main rope are fixed to the machine base. .