WO2023223554A1 - Elevator device and repair method for same - Google Patents

Elevator device and repair method for same Download PDF

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Publication number
WO2023223554A1
WO2023223554A1 PCT/JP2022/020983 JP2022020983W WO2023223554A1 WO 2023223554 A1 WO2023223554 A1 WO 2023223554A1 JP 2022020983 W JP2022020983 W JP 2022020983W WO 2023223554 A1 WO2023223554 A1 WO 2023223554A1
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WO
WIPO (PCT)
Prior art keywords
counterweight
car
guide rails
pair
hoistway
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Application number
PCT/JP2022/020983
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French (fr)
Japanese (ja)
Inventor
大輔 岡田
靖征 小出
良直 高橋
晃一 本村
雅大 天野
恵輔 清水
弘太 奥村
Original Assignee
三菱電機株式会社
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/020983 priority Critical patent/WO2023223554A1/en
Publication of WO2023223554A1 publication Critical patent/WO2023223554A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables

Definitions

  • the present disclosure relates to an elevator device and a method for repairing the same.
  • the present disclosure has been made to solve the above-mentioned problems, and provides an elevator device that can easily secure installation space for a hoist in a hoistway, regardless of the space at the top of the hoistway.
  • the purpose of this study is to obtain a method for repairing the same.
  • An elevator device includes a hoist installed in a hoistway and having a drive sheave, a suspension body wrapped around the drive sheave, and a pair of cars installed in the hoistway.
  • the guide rail, a pair of counterweights installed in the hoistway are suspended by the guide rail and suspension body, and as the drive sheave rotates, the car is guided by the pair of car guide rails and moves up and down the hoistway.
  • the counterweight is suspended by a car and a suspension body, and is guided by a pair of counterweight guide rails to move up and down in the hoistway as the drive sheave rotates.
  • the moving speed of the counterweight is lower than the moving speed of the car relative to the rotational speed of the drive sheave, and the height of the pair of counterweight guide rails from the bottom of the hoistway is equal to the height of the pair of car guide rails from the bottom.
  • the hoist is supported by at least one of the pair of counterweight guide rails above the lifting stroke of the counterweight.
  • a method for refurbishing an elevator device includes a rail shortening step in which the height of a pair of counterweight guide rails from the bottom of a hoistway is lower than the height before the refurbishment, and a hoisting machine after the refurbishment is Above the lifting stroke of the counterweight, the hoisting machine is installed to be supported by at least one of a pair of counterweight guide rails, and the moving speed of the counterweight relative to the rotational speed of the drive sheave is determined by the rotation of the drive sheave. It includes a hanging step of hanging the suspension body so that the moving speed of the car is lower than the moving speed of the car.
  • the installation space for the hoist can be easily secured in the hoistway regardless of the space at the top of the hoistway.
  • FIG. 2 is a schematic perspective view showing the elevator system before renovation.
  • FIG. 2 is a plan view showing the elevator device of FIG. 1.
  • FIG. FIG. 2 is a schematic perspective view showing a repaired elevator system repaired by the repair method of the first embodiment.
  • FIG. 4 is a perspective view showing an enlarged main part of the elevator device shown in FIG. 3;
  • 5 is a plan view showing the elevator device of FIG. 4.
  • FIG. 5 is a side view showing the top of the hoistway of FIG. 4;
  • 3 is a schematic process diagram showing a repair method according to the first embodiment.
  • FIG. 1 is a schematic perspective view showing the elevator system before renovation.
  • FIG. 2 is a plan view showing the elevator device of FIG. 1.
  • the hoist 2 before renovation is installed at the bottom of the hoistway 1.
  • the hoist 2 has a hoist main body 3 and a drive sheave 4.
  • the hoist main body 3 has a hoist motor (not shown) and a hoist brake (not shown).
  • the hoist motor rotates the drive sheave 4.
  • the hoist brake keeps the drive sheave 4 stationary. Further, the hoisting machine brake brakes the rotation of the drive sheave 4.
  • a first car guide rail 5 and a second car guide rail 6 are installed as a pair of car guide rails. Further, in the hoistway 1, a first counterweight guide rail 7 and a second counterweight guide rail 8 are installed as a pair of counterweight guide rails.
  • a car 9 is arranged between the first car guide rail 5 and the second car guide rail 6.
  • the car 9 moves up and down within the hoistway 1 while being guided by the first car guide rail 5 and the second car guide rail 6.
  • a pre-renovation counterweight 10 is placed between the first counterweight guide rail 7 and the second counterweight guide rail 8.
  • the counterweight 10 moves up and down within the hoistway 1 while being guided by a first counterweight guide rail 7 and a second counterweight guide rail 8.
  • the first counterweight guide rail 7, the second counterweight guide rail 8, and the counterweight 10 are on the same side of the car 9 as the second car guide rail 6. It is arranged on the opposite side from the first car guide rail 5.
  • a first car hanging wheel 11 and a second car hanging wheel 12 are provided at the lower part of the car 9.
  • a counterweight suspension wheel 13 is provided above the counterweight 10.
  • a top beam 14 is provided at the top of the hoistway 1.
  • the top beam 14 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8.
  • the top beam 14 is provided with a first return wheel 15 and a second return wheel 16.
  • a suspension body 17 before repair is wrapped around the drive sheave 4.
  • FIG. 2 only a part of the suspension body 17 is shown.
  • the suspension body 17 has a first end and a second end.
  • a first rope stopper (not shown) is provided at the top of the hoistway 1.
  • a first end of the suspension body 17 is connected to a first leash.
  • a second rope stopper (not shown) is provided on the top beam 14. The second end of the suspension body 17 is connected to a second latch.
  • the suspension body 17 includes, in order from the first end side, a first car suspension wheel 11, a second car suspension wheel 12, a second return wheel 16, a drive sheave 4, a first return wheel 15, and a counterweight suspension. It is wrapped around car 13.
  • the car 9 and the counterweight 10 are each suspended by a suspension body 17 in a 2:1 roping manner. Further, the car 9 and the counterweight 10 are moved up and down in the hoistway 1 by the rotation of the drive sheave 4.
  • Each of the first counterweight guide rail 7 and the second counterweight guide rail 8 is constructed by piecing together a plurality of rail members 20 in the vertical direction.
  • Each rail member 20 is fixed within the hoistway 1 via a plurality of rail brackets (not shown).
  • FIG. 3 is a schematic perspective view showing a repaired elevator system repaired by the repair method of the first embodiment.
  • FIG. 4 is a perspective view showing an enlarged main part of the elevator device shown in FIG. 3.
  • FIG. 5 is a plan view showing the elevator device of FIG. 4.
  • FIG. 6 is a side view showing the top of the hoistway 1 of FIG. 4.
  • both the elevator device before the renovation and the elevator device after the renovation are machine room-less elevators.
  • the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are lower than before the renovation.
  • the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are the same as those of the first car guide rail 5 and the second car guide rail from the bottom of the hoistway 1. It is lower than the height of the rail 6.
  • a machine stand 21 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8.
  • a refurbished hoist 22 is installed on the machine stand 21. That is, the hoisting machine 22 is supported by the first counterweight guide rail 7 and the second counterweight guide rail 8 via the machine stand 21.
  • the hoist 22 has a hoist main body 23 and a drive sheave 24.
  • the hoist main body 23 includes a hoist motor (not shown) and a hoist brake (not shown).
  • the hoist motor rotates the drive sheave 24.
  • the hoist brake keeps the drive sheave 24 stationary. Further, the hoisting machine brake brakes the rotation of the drive sheave 24.
  • a thin hoist is used as the hoist 22 as the hoist 22 .
  • a thin winding machine is a winding machine whose axial dimension is smaller than the dimension in the direction perpendicular to the axial direction.
  • a modified counterweight 25 is arranged between the first counterweight guide rail 7 and the second counterweight guide rail 8.
  • the counterweight 25 moves up and down within the hoistway 1 while being guided by the first counterweight guide rail 7 and the second counterweight guide rail 8.
  • the hoist 22 is arranged above the lifting stroke of the counterweight 25.
  • a first counterweight suspension wheel 26 and a second counterweight suspension wheel 27 are provided above the counterweight 25.
  • a return wheel 28 is provided on the machine stand 21.
  • the rotation shaft of the first counterweight suspension wheel 26, the rotation shaft of the second counterweight suspension wheel 27, and the rotation axis of the return wheel 28 are the same as the first and second counterweight suspension wheels, respectively.
  • the counterweights are inclined in the same direction and at the same angle with respect to a straight line connecting the centers of the counterweight guide rails 7 and 8.
  • the first car guide rail 5 before repair, the second car guide rail 6 before repair, and the car 9 before repair are still used as they are after repair.
  • a modified suspension body 29 is wrapped around the drive sheave 24.
  • FIG. 5 only a part of the suspension body 29 is shown. Further, in FIG. 6, the suspension body 29 is omitted.
  • the suspension body 29 has a first end and a second end. A first end of the suspension body 29 is connected to a first leash.
  • the machine stand 21 is provided with a second rope stopper (not shown). The second end of the suspension body 29 is connected to a second leash.
  • suspension body 29 includes, in order from the first end side, the first car hanging wheel 11, the second car hanging wheel 12, the drive sheave 24, the first counterweight hanging wheel 26, the return wheel 28, and the second car hanging wheel 28.
  • the weights are wound around the weight hanging wheel 27 in this order.
  • the car 9 is suspended by a suspension body 29 using a 2:1 roping method.
  • the counterweight 25 is suspended by a suspension body 29 using a 4:1 roping method.
  • the car 9 and the counterweight 25 move up and down in the hoistway 1 as the drive sheave 24 rotates.
  • the moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24.
  • the lifting stroke of the counterweight 25 after the modification is half the lifting stroke of the counterweight 10 before the modification.
  • the mass of the counterweight 25 after the modification is larger than the mass of the counterweight 10 before the modification.
  • the lowest position of the counterweight 25 after the modification when it is raised and lowered is the same as the lowest position when the balance weight 10 is raised and lowered before the modification.
  • FIG. 7 is a schematic process diagram showing the repair method of the first embodiment.
  • the repair method of the first embodiment includes a lifting step S101, a rail shortening step S102, a hoist installation step S103, a counterweight installation step S104, a hanging step S105, and a hoist removal step S106.
  • a lifting device (not shown) is installed at the top of the hoistway 1, and the car 9 is lifted by the lifting device. Then, the suspension body 17 before repair, the counterweight 10 before repair, the top beam 14, the first return wheel 15, and the second return wheel 16 are removed.
  • a chain hoist is used as the lifting device.
  • the rail shortening step S102 is a step in which the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are made lower than the heights before modification.
  • the first counterweight guide rail 7 and the second counterweight guide rail 8 are lowered in height.
  • the hoisting machine 22 after the repair is installed by the first counterweight guide rail 7 and the second counterweight guide rail 8 above the lifting stroke of the counterweight 25 after the repair. This is a supporting process.
  • a machine stand 21 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8. Then, the hoisting machine 22 after repair is installed on the machine stand 21.
  • the modified counterweight 25 is installed between the first counterweight guide rail 7 and the second counterweight guide rail 8.
  • the modified suspension body 29 is rotated so that the moving speed of the counterweight 25 with respect to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 with respect to the rotational speed of the driving sheave 24. It is a process.
  • a return wheel 28 is installed on the machine stand 21. Then, the suspension body 29 is wound around the first car suspension wheel 11, the second car suspension wheel 12, the drive sheave 24, the first counterweight suspension wheel 26, the return wheel 28, and the second counterweight suspension wheel 27. It will be done. Further, a first end of the suspension body 29 is connected to a first rope stop, and a second end of the suspension body 29 is connected to a second rope stop.
  • the car 9 is suspended by the suspension body 29 in a 2:1 roping method. Further, the counterweight 25 is suspended by a suspension body 29 using a 4:1 roping method.
  • the hoisting machine removal step S106 is a process of removing the hoisting machine 2 before repair, which is installed at a lower position than the hoisting machine 22 after repair, from the hoistway 1.
  • the moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24.
  • the height of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 is the height of the first car guide rail 5 and the second car guide rail from the bottom of the hoistway 1. lower than the height of 6.
  • the hoisting machine 22 is supported by a first counterweight guide rail 7 and a second counterweight guide rail 8 above the lifting stroke of the counterweight 25.
  • the installation space for the hoist 22 can be easily secured in the hoistway 1 regardless of the space at the top of the hoistway 1.
  • the hoist 22 can be prevented from getting wet.
  • the rotation axis of the first counterweight suspension wheel 26 and the rotation axis of the second counterweight suspension wheel 27 are connected to the first and second counterweight guides, respectively. It is inclined in the same direction with respect to the straight line connecting the centers of the rails 7 and 8. Therefore, the first and second counterweight suspension wheels 26 and 27 can be moved to the counterweight 25 without changing the positions of the first and second counterweight guide rails 7 and 8 from before the renovation.
  • the roping method on the counterweight 25 side can be changed.
  • the lowest position of the counterweight 25 after the modification when it is raised and lowered is the same as the lowest position when the balance weight 10 is raised and lowered before the modification. Therefore, if a counterweight buffer (not shown) is installed at the bottom of the hoistway 1 in the elevator system before the renovation, the counterweight buffer can be used as is even after the renovation.
  • the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 are made lower than the heights before the repair.
  • the hoisting machine 22 after modification is supported by the first counterweight guide rail 7 and the second counterweight guide rail 8 above the lifting stroke of the counterweight 25.
  • the suspension body 29 is hung so that the moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24.
  • the installation space for the hoist 22 can be easily secured in the hoistway 1 regardless of the space at the top of the hoistway 1.
  • the rail shortening step S102 at least the uppermost rail member 20 is removed from each of the first counterweight guide rail 7 and the second counterweight guide rail 8. For this reason, while reusing the first counterweight guide rail 7 and second counterweight guide rail 8 before modification, the heights of the first counterweight guide rail 7 and second counterweight guide rail 8 can be easily adjusted. can be lowered to This makes it possible to shorten the repair work period.
  • the hoisting machine removal step S106 the hoisting machine 2 before repair is removed. Therefore, the space within the hoistway 1 can be used effectively.
  • the car 9 before the repair, the first car guide rail 5 before the repair, and the second car guide rail 6 before the repair are still used as they are after the repair. Therefore, the repair work period can be shortened. Furthermore, the unrenovated car 9 can be raised and lowered along the unrenovated first car guide rail 5 and the unrenovated second car guide rail 6, and the refurbishment work can be performed from above the car 9.
  • first counterweight guide rail 7 and the second counterweight guide rail 8 are performed from above the car 9 with the car 9 lifted by the lifting device. Thereby, work on the first counterweight guide rail 7 and the second counterweight guide rail 8 can be easily performed.
  • the roping method on the car 9 side after the modification is a 2:1 roping method
  • the roping method on the counterweight 25 side after the modification is a 4:1 roping method.
  • each roping method is not limited to the above example.
  • m is a positive integer
  • n is a positive positive number larger than m. Good to have.
  • the hoisting machine 22 after modification may be supported by only one of the first counterweight guide rail 7 and the second counterweight guide rail 8.
  • the hoisting machine 22 after repair does not necessarily have to be a new hoisting machine. That is, the hoisting machine 2 before modification may be moved and used as the hoisting machine after modification.
  • the order of repair work can be changed as appropriate and is not limited to the order shown in FIG.
  • the hoist 2 before repair may be removed.

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

This repair method for an elevator device includes: a rail shortening step for lowering the height of a pair of balance weight guide rails from a bottom section of a hoistway when compared to the height before a repair; a hoisting machine installation step for supporting a repaired hoisting machine with at least one of the pair of balance weight guide rails at a location higher than the raising/lowering stroke of a balance weight; and a winding step for winding a suspended body so that the movement speed of the balance weight with respect to the rotation speed of a drive sheave is lower than the movement speed of the car with respect to the rotation speed of the drive sheave.

Description

エレベーター装置及びその改修方法Elevator equipment and its repair method
　本開示は、エレベーター装置及びその改修方法に関するものである。 The present disclosure relates to an elevator device and a method for repairing the same.
　従来の機械室レスエレベーターの改修方法では、既設の巻上機を撤去することなく、新たな巻上機が昇降路の頂部に設置される。既設の巻上機は、昇降路のピットに設置されており、改修後には返し車として使用される（例えば、特許文献１参照）。 In the conventional method of renovating an elevator without a machine room, a new hoisting machine is installed at the top of the hoistway without removing the existing hoisting machine. The existing hoist is installed in the pit of the hoistway, and after renovation, it will be used as a return wheel (for example, see Patent Document 1).
特許第６７５８４６１号公報Patent No. 6758461
　上記のような従来の機械室レスエレベーターの改修方法では、新たな巻上機が昇降路の頂部に設置される。このため、昇降路の頂部に、新たな巻上機を設置するための高さ方向のスペースが必要であり、スペースが確保できない建物では、改修工事の実施が困難となる。 In the conventional machine room-less elevator renovation method as described above, a new hoisting machine is installed at the top of the hoistway. For this reason, space in the height direction is required at the top of the hoistway to install a new hoisting machine, and in buildings where space cannot be secured, it becomes difficult to carry out renovation work.
　本開示は、上記のような課題を解決するためになされたものであり、昇降路の頂部のスペースによらず、巻上機の設置スペースを昇降路内に容易に確保することができるエレベーター装置及びその改修方法を得ることを目的とする。 The present disclosure has been made to solve the above-mentioned problems, and provides an elevator device that can easily secure installation space for a hoist in a hoistway, regardless of the space at the top of the hoistway. The purpose of this study is to obtain a method for repairing the same.
　本開示に係るエレベーター装置は、昇降路に設けられており、かつ駆動シーブを有している巻上機、駆動シーブに巻き掛けられている懸架体、昇降路内に設置されている一対のかごガイドレール、昇降路内に設置されている一対の釣合おもりガイドレール、懸架体によって吊り下げられており、駆動シーブが回転することによって、一対のかごガイドレールに案内されて昇降路内を昇降するかご、及び懸架体によって吊り下げられており、駆動シーブが回転することによって、一対の釣合おもりガイドレールに案内されて昇降路内を昇降する釣合おもりを備え、駆動シーブの回転速度に対する釣合おもりの移動速度が、駆動シーブの回転速度に対するかごの移動速度よりも低く、昇降路の底部からの一対の釣合おもりガイドレールの高さは、底部からの一対のかごガイドレールの高さよりも低く、巻上機は、釣合おもりの昇降行程よりも上方において、一対の釣合おもりガイドレールの少なくともいずれか一方によって支持されている。
　本開示に係るエレベーター装置の改修方法は、昇降路の底部からの一対の釣合おもりガイドレールの高さを、改修前の高さよりも低くするレール短縮工程、改修後の巻上機を、釣合おもりの昇降行程よりも上方において、一対の釣合おもりガイドレールの少なくともいずれか一方によって支持させる巻上機設置工程、及び駆動シーブの回転速度に対する釣合おもりの移動速度が、駆動シーブの回転速度に対するかごの移動速度よりも低くなるように懸架体を掛け回す掛け回し工程を含む。 An elevator device according to the present disclosure includes a hoist installed in a hoistway and having a drive sheave, a suspension body wrapped around the drive sheave, and a pair of cars installed in the hoistway. The guide rail, a pair of counterweights installed in the hoistway are suspended by the guide rail and suspension body, and as the drive sheave rotates, the car is guided by the pair of car guide rails and moves up and down the hoistway. The counterweight is suspended by a car and a suspension body, and is guided by a pair of counterweight guide rails to move up and down in the hoistway as the drive sheave rotates. The moving speed of the counterweight is lower than the moving speed of the car relative to the rotational speed of the drive sheave, and the height of the pair of counterweight guide rails from the bottom of the hoistway is equal to the height of the pair of car guide rails from the bottom. The hoist is supported by at least one of the pair of counterweight guide rails above the lifting stroke of the counterweight.
A method for refurbishing an elevator device according to the present disclosure includes a rail shortening step in which the height of a pair of counterweight guide rails from the bottom of a hoistway is lower than the height before the refurbishment, and a hoisting machine after the refurbishment is Above the lifting stroke of the counterweight, the hoisting machine is installed to be supported by at least one of a pair of counterweight guide rails, and the moving speed of the counterweight relative to the rotational speed of the drive sheave is determined by the rotation of the drive sheave. It includes a hanging step of hanging the suspension body so that the moving speed of the car is lower than the moving speed of the car.
　本開示によれば、昇降路の頂部のスペースによらず、巻上機の設置スペースを昇降路内に容易に確保することができる。 According to the present disclosure, the installation space for the hoist can be easily secured in the hoistway regardless of the space at the top of the hoistway.
改修前のエレベーター装置を示す概略の斜視図である。FIG. 2 is a schematic perspective view showing the elevator system before renovation. 図１のエレベーター装置を示す平面図である。FIG. 2 is a plan view showing the elevator device of FIG. 1. FIG. 実施の形態１の改修方法によって改修された改修後のエレベーター装置を示す概略の斜視図である。FIG. 2 is a schematic perspective view showing a repaired elevator system repaired by the repair method of the first embodiment. 図３のエレベーター装置の要部を拡大して示す斜視図である。FIG. 4 is a perspective view showing an enlarged main part of the elevator device shown in FIG. 3; 図４のエレベーター装置を示す平面図である。5 is a plan view showing the elevator device of FIG. 4. FIG. 図４の昇降路の頂部を示す側面図である。FIG. 5 is a side view showing the top of the hoistway of FIG. 4; 実施の形態１の改修方法を示す概略の工程図である。3 is a schematic process diagram showing a repair method according to the first embodiment. FIG.
　以下、実施の形態について、図面を参照して説明する。
　実施の形態１．
　図１は、改修前のエレベーター装置を示す概略の斜視図である。図２は、図１のエレベーター装置を示す平面図である。 Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1.
FIG. 1 is a schematic perspective view showing the elevator system before renovation. FIG. 2 is a plan view showing the elevator device of FIG. 1.
　図において、昇降路１の底部には、改修前の巻上機２が設置されている。巻上機２は、巻上機本体３と、駆動シーブ４とを有している。 In the figure, the hoist 2 before renovation is installed at the bottom of the hoistway 1. The hoist 2 has a hoist main body 3 and a drive sheave 4.
　巻上機本体３は、図示しない巻上機モータと、図示しない巻上機ブレーキとを有している。巻上機モータは、駆動シーブ４を回転させる。巻上機ブレーキは、駆動シーブ４の静止状態を保持する。また、巻上機ブレーキは、駆動シーブ４の回転を制動する。 The hoist main body 3 has a hoist motor (not shown) and a hoist brake (not shown). The hoist motor rotates the drive sheave 4. The hoist brake keeps the drive sheave 4 stationary. Further, the hoisting machine brake brakes the rotation of the drive sheave 4.
　昇降路１内には、一対のかごガイドレールとして、第１かごガイドレール５と、第２かごガイドレール６とが設置されている。また、昇降路１内には、一対の釣合おもりガイドレールとして、第１釣合おもりガイドレール７と、第２釣合おもりガイドレール８とが設置されている。 Inside the hoistway 1, a first car guide rail 5 and a second car guide rail 6 are installed as a pair of car guide rails. Further, in the hoistway 1, a first counterweight guide rail 7 and a second counterweight guide rail 8 are installed as a pair of counterweight guide rails.
　第１かごガイドレール５と第２かごガイドレール６との間には、かご９が配置されている。かご９は、第１かごガイドレール５及び第２かごガイドレール６に案内されて、昇降路１内を昇降する。 A car 9 is arranged between the first car guide rail 5 and the second car guide rail 6. The car 9 moves up and down within the hoistway 1 while being guided by the first car guide rail 5 and the second car guide rail 6.
　第１釣合おもりガイドレール７と第２釣合おもりガイドレール８との間には、改修前の釣合おもり１０が配置されている。釣合おもり１０は、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８に案内されて、昇降路１内を昇降する。 A pre-renovation counterweight 10 is placed between the first counterweight guide rail 7 and the second counterweight guide rail 8. The counterweight 10 moves up and down within the hoistway 1 while being guided by a first counterweight guide rail 7 and a second counterweight guide rail 8.
　真上から昇降路１を見て、第１釣合おもりガイドレール７、第２釣合おもりガイドレール８、及び釣合おもり１０は、かご９に対して、第２かごガイドレール６と同じ側であって、第１かごガイドレール５とは反対側に配置されている。 Looking at the hoistway 1 from directly above, the first counterweight guide rail 7, the second counterweight guide rail 8, and the counterweight 10 are on the same side of the car 9 as the second car guide rail 6. It is arranged on the opposite side from the first car guide rail 5.
　かご９の下部には、第１かご吊り車１１と、第２かご吊り車１２とが設けられている。釣合おもり１０の上部には、釣合おもり吊り車１３が設けられている。 A first car hanging wheel 11 and a second car hanging wheel 12 are provided at the lower part of the car 9. A counterweight suspension wheel 13 is provided above the counterweight 10.
　昇降路１の頂部には、頂部梁１４が設けられている。頂部梁１４は、第１釣合おもりガイドレール７の上端と第２釣合おもりガイドレール８の上端とに架設されている。頂部梁１４には、第１返し車１５と、第２返し車１６とが設けられている。 A top beam 14 is provided at the top of the hoistway 1. The top beam 14 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8. The top beam 14 is provided with a first return wheel 15 and a second return wheel 16.
　駆動シーブ４には、改修前の懸架体１７が巻き掛けられている。図２では、懸架体１７の一部のみが示されている。懸架体１７としては、複数本のロープ又は複数本のベルトが用いられている。 A suspension body 17 before repair is wrapped around the drive sheave 4. In FIG. 2, only a part of the suspension body 17 is shown. As the suspension body 17, a plurality of ropes or a plurality of belts are used.
　懸架体１７は、第１端部及び第２端部を有している。昇降路１の頂部には、図示しない第１綱止めが設けられている。懸架体１７の第１端部は、第１綱止めに接続されている。頂部梁１４には、図示しない第２綱止めが設けられている。懸架体１７の第２端部は、第２綱止めに接続されている。 The suspension body 17 has a first end and a second end. A first rope stopper (not shown) is provided at the top of the hoistway 1. A first end of the suspension body 17 is connected to a first leash. A second rope stopper (not shown) is provided on the top beam 14. The second end of the suspension body 17 is connected to a second latch.
　また、懸架体１７は、第１端部側から順に、第１かご吊り車１１、第２かご吊り車１２、第２返し車１６、駆動シーブ４、第１返し車１５、及び釣合おもり吊り車１３に巻き掛けられている。 Further, the suspension body 17 includes, in order from the first end side, a first car suspension wheel 11, a second car suspension wheel 12, a second return wheel 16, a drive sheave 4, a first return wheel 15, and a counterweight suspension. It is wrapped around car 13.
　かご９及び釣合おもり１０は、それぞれ２：１ローピング方式で、懸架体１７によって吊り下げられている。また、かご９及び釣合おもり１０は、駆動シーブ４が回転することによって昇降路１内を昇降する。 The car 9 and the counterweight 10 are each suspended by a suspension body 17 in a 2:1 roping manner. Further, the car 9 and the counterweight 10 are moved up and down in the hoistway 1 by the rotation of the drive sheave 4.
　第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８のそれぞれは、複数本のレール部材２０を上下方向に継ぎ合わせて構成されている。各レール部材２０は、図示しない複数のレールブラケットを介して、昇降路１内に固定されている。 Each of the first counterweight guide rail 7 and the second counterweight guide rail 8 is constructed by piecing together a plurality of rail members 20 in the vertical direction. Each rail member 20 is fixed within the hoistway 1 via a plurality of rail brackets (not shown).
　図３は、実施の形態１の改修方法によって改修された改修後のエレベーター装置を示す概略の斜視図である。図４は、図３のエレベーター装置の要部を拡大して示す斜視図である。図５は、図４のエレベーター装置を示す平面図である。図６は、図４の昇降路１の頂部を示す側面図である。 FIG. 3 is a schematic perspective view showing a repaired elevator system repaired by the repair method of the first embodiment. FIG. 4 is a perspective view showing an enlarged main part of the elevator device shown in FIG. 3. FIG. FIG. 5 is a plan view showing the elevator device of FIG. 4. FIG. 6 is a side view showing the top of the hoistway 1 of FIG. 4.
　実施の形態１では、改修前のエレベーター装置も、改修後のエレベーター装置も、機械室レスエレベーターである。 In the first embodiment, both the elevator device before the renovation and the elevator device after the renovation are machine room-less elevators.
　改修後のエレベーター装置では、昇降路１の底部からの第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さが、改修前よりも低くされている。これにより、昇降路１の底部からの第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さは、昇降路１の底部からの第１かごガイドレール５及び第２かごガイドレール６の高さよりも低い。 In the elevator system after the renovation, the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are lower than before the renovation. As a result, the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are the same as those of the first car guide rail 5 and the second car guide rail from the bottom of the hoistway 1. It is lower than the height of the rail 6.
　第１釣合おもりガイドレール７の上端と、第２釣合おもりガイドレール８の上端とには、機械台２１が架設されている。機械台２１上には、改修後の巻上機２２が設置されている。即ち、巻上機２２は、機械台２１を介して、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８によって支持されている。 A machine stand 21 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8. A refurbished hoist 22 is installed on the machine stand 21. That is, the hoisting machine 22 is supported by the first counterweight guide rail 7 and the second counterweight guide rail 8 via the machine stand 21.
　巻上機２２は、巻上機本体２３と、駆動シーブ２４とを有している。巻上機本体２３は、図示しない巻上機モータと、図示しない巻上機ブレーキとを有している。巻上機モータは、駆動シーブ２４を回転させる。巻上機ブレーキは、駆動シーブ２４の静止状態を保持する。また、巻上機ブレーキは、駆動シーブ２４の回転を制動する。 The hoist 22 has a hoist main body 23 and a drive sheave 24. The hoist main body 23 includes a hoist motor (not shown) and a hoist brake (not shown). The hoist motor rotates the drive sheave 24. The hoist brake keeps the drive sheave 24 stationary. Further, the hoisting machine brake brakes the rotation of the drive sheave 24.
　巻上機２２としては、薄型巻上機が用いられている。薄型巻上機は、軸方向寸法が軸方向に直角な方向の寸法よりも小さい巻上機である。 As the hoist 22, a thin hoist is used. A thin winding machine is a winding machine whose axial dimension is smaller than the dimension in the direction perpendicular to the axial direction.
　第１釣合おもりガイドレール７と第２釣合おもりガイドレール８との間には、改修後の釣合おもり２５が配置されている。釣合おもり２５は、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８によって案内されて、昇降路１内を昇降する。巻上機２２は、釣合おもり２５の昇降行程よりも上方に配置されている。 A modified counterweight 25 is arranged between the first counterweight guide rail 7 and the second counterweight guide rail 8. The counterweight 25 moves up and down within the hoistway 1 while being guided by the first counterweight guide rail 7 and the second counterweight guide rail 8. The hoist 22 is arranged above the lifting stroke of the counterweight 25.
　釣合おもり２５の上部には、第１釣合おもり吊り車２６と、第２釣合おもり吊り車２７とが設けられている。機械台２１上には、返し車２８が設けられている。 A first counterweight suspension wheel 26 and a second counterweight suspension wheel 27 are provided above the counterweight 25. A return wheel 28 is provided on the machine stand 21.
　昇降路１を真上から見て、第１釣合おもり吊り車２６の回転軸、第２釣合おもり吊り車２７の回転軸、及び返し車２８の回転軸のそれぞれは、第１及び第２釣合おもりガイドレール７，８の中心間を結ぶ直線に対して、同方向へ同角度だけ傾斜している。 When the hoistway 1 is viewed from directly above, the rotation shaft of the first counterweight suspension wheel 26, the rotation shaft of the second counterweight suspension wheel 27, and the rotation axis of the return wheel 28 are the same as the first and second counterweight suspension wheels, respectively. The counterweights are inclined in the same direction and at the same angle with respect to a straight line connecting the centers of the counterweight guide rails 7 and 8.
　改修前の第１かごガイドレール５、改修前の第２かごガイドレール６、及び改修前のかご９は、改修後もそのまま流用されている。 The first car guide rail 5 before repair, the second car guide rail 6 before repair, and the car 9 before repair are still used as they are after repair.
　駆動シーブ２４には、改修後の懸架体２９が巻き掛けられている。図５では、懸架体２９の一部のみが示されている。また、図６では、懸架体２９が省略されている。懸架体２９としては、複数本のロープ又は複数本のベルトが用いられている。 A modified suspension body 29 is wrapped around the drive sheave 24. In FIG. 5, only a part of the suspension body 29 is shown. Further, in FIG. 6, the suspension body 29 is omitted. As the suspension body 29, a plurality of ropes or a plurality of belts are used.
　懸架体２９は、第１端部及び第２端部を有している。懸架体２９の第１端部は、第１綱止めに接続されている。機械台２１には、図示しない第２綱止めが設けられている。懸架体２９の第２端部は、第２綱止めに接続されている。 The suspension body 29 has a first end and a second end. A first end of the suspension body 29 is connected to a first leash. The machine stand 21 is provided with a second rope stopper (not shown). The second end of the suspension body 29 is connected to a second leash.
　また、懸架体２９は、第１端部側から順に、第１かご吊り車１１、第２かご吊り車１２、駆動シーブ２４、第１釣合おもり吊り車２６、返し車２８、及び第２釣合おもり吊り車２７の順に巻き掛けられている。 Further, the suspension body 29 includes, in order from the first end side, the first car hanging wheel 11, the second car hanging wheel 12, the drive sheave 24, the first counterweight hanging wheel 26, the return wheel 28, and the second car hanging wheel 28. The weights are wound around the weight hanging wheel 27 in this order.
　かご９は、２：１ローピング方式で、懸架体２９によって吊り下げられている。釣合おもり２５は、４：１ローピング方式で、懸架体２９によって吊り下げられている。 The car 9 is suspended by a suspension body 29 using a 2:1 roping method. The counterweight 25 is suspended by a suspension body 29 using a 4:1 roping method.
　かご９及び釣合おもり２５は、駆動シーブ２４が回転することによって昇降路１内を昇降する。駆動シーブ２４の回転速度に対する釣合おもり２５の移動速度は、駆動シーブ２４の回転速度に対するかご９の移動速度よりも低い。 The car 9 and the counterweight 25 move up and down in the hoistway 1 as the drive sheave 24 rotates. The moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24.
　改修後の釣合おもり２５の昇降行程は、改修前の釣合おもり１０の昇降行程の半分である。改修後の釣合おもり２５の質量は、改修前の釣合おもり１０の質量よりも大きい。改修後の釣合おもり２５の昇降時における最下位置は、改修前の釣合おもり１０昇降時における最下位置と同じである。 The lifting stroke of the counterweight 25 after the modification is half the lifting stroke of the counterweight 10 before the modification. The mass of the counterweight 25 after the modification is larger than the mass of the counterweight 10 before the modification. The lowest position of the counterweight 25 after the modification when it is raised and lowered is the same as the lowest position when the balance weight 10 is raised and lowered before the modification.
　図７は、実施の形態１の改修方法を示す概略の工程図である。実施の形態１の改修方法は、揚重工程Ｓ１０１、レール短縮工程Ｓ１０２、巻上機設置工程Ｓ１０３、釣合おもり設置工程Ｓ１０４、掛け回し工程Ｓ１０５、及び巻上機撤去工程Ｓ１０６を含む。 FIG. 7 is a schematic process diagram showing the repair method of the first embodiment. The repair method of the first embodiment includes a lifting step S101, a rail shortening step S102, a hoist installation step S103, a counterweight installation step S104, a hanging step S105, and a hoist removal step S106.
　揚重工程Ｓ１０１では、図示しない揚重装置が昇降路１の頂部に設置され、揚重装置によってかご９が吊り上げられる。そして、改修前の懸架体１７、改修前の釣合おもり１０、頂部梁１４、第１返し車１５、及び第２返し車１６が撤去される。揚重装置としては、例えばチェーンブロックが用いられる。 In the lifting step S101, a lifting device (not shown) is installed at the top of the hoistway 1, and the car 9 is lifted by the lifting device. Then, the suspension body 17 before repair, the counterweight 10 before repair, the top beam 14, the first return wheel 15, and the second return wheel 16 are removed. For example, a chain hoist is used as the lifting device.
　レール短縮工程Ｓ１０２は、昇降路１の底部からの第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さを、改修前の高さよりも低くする工程である。 The rail shortening step S102 is a step in which the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 are made lower than the heights before modification.
　具体的には、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８のそれぞれから、少なくとも最も上に位置しているレール部材２０を撤去することによって、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さが低くされる。 Specifically, by removing at least the uppermost rail member 20 from each of the first counterweight guide rail 7 and the second counterweight guide rail 8, the first counterweight guide rail 7 and the second counterweight guide rail 8 are lowered in height.
　巻上機設置工程Ｓ１０３は、改修後の巻上機２２を、改修後の釣合おもり２５の昇降行程よりも上方において、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８によって支持させる工程である。 In the hoisting machine installation step S103, the hoisting machine 22 after the repair is installed by the first counterweight guide rail 7 and the second counterweight guide rail 8 above the lifting stroke of the counterweight 25 after the repair. This is a supporting process.
　具体的には、第１釣合おもりガイドレール７の上端と第２釣合おもりガイドレール８の上端とに、機械台２１が架設される。そして、機械台２１の上に、改修後の巻上機２２が設置される。 Specifically, a machine stand 21 is installed between the upper end of the first counterweight guide rail 7 and the upper end of the second counterweight guide rail 8. Then, the hoisting machine 22 after repair is installed on the machine stand 21.
　釣合おもり設置工程Ｓ１０４では、第１釣合おもりガイドレール７と第２釣合おもりガイドレール８との間に、改修後の釣合おもり２５が設置される。 In the counterweight installation step S104, the modified counterweight 25 is installed between the first counterweight guide rail 7 and the second counterweight guide rail 8.
　掛け回し工程Ｓ１０５は、駆動シーブ２４の回転速度に対する釣合おもり２５の移動速度が、駆動シーブ２４の回転速度に対するかご９の移動速度よりも低くなるように、改修後の懸架体２９を掛け回す工程である。 In the hanging step S105, the modified suspension body 29 is rotated so that the moving speed of the counterweight 25 with respect to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 with respect to the rotational speed of the driving sheave 24. It is a process.
　具体的には、機械台２１の上に返し車２８が設置される。そして、懸架体２９が、第１かご吊り車１１、第２かご吊り車１２、駆動シーブ２４、第１釣合おもり吊り車２６、返し車２８、及び第２釣合おもり吊り車２７に巻き掛けられる。また、懸架体２９の第１端部が第１綱止めに接続され、懸架体２９の第２端部が第２綱止めに接続される。 Specifically, a return wheel 28 is installed on the machine stand 21. Then, the suspension body 29 is wound around the first car suspension wheel 11, the second car suspension wheel 12, the drive sheave 24, the first counterweight suspension wheel 26, the return wheel 28, and the second counterweight suspension wheel 27. It will be done. Further, a first end of the suspension body 29 is connected to a first rope stop, and a second end of the suspension body 29 is connected to a second rope stop.
　これにより、かご９は、２：１ローピング方式で、懸架体２９によって吊り下げられる。また、釣合おもり２５は、４：１ローピング方式で、懸架体２９によって吊り下げられる。 As a result, the car 9 is suspended by the suspension body 29 in a 2:1 roping method. Further, the counterweight 25 is suspended by a suspension body 29 using a 4:1 roping method.
　第１釣合おもりガイドレール７、第２釣合おもりガイドレール８、機械台２１、改修後の巻上機２２、返し車２８等に対する作業は、揚重装置によってかご９を吊り上げた状態で、かご９の上から行われる。 Work on the first counterweight guide rail 7, second counterweight guide rail 8, machine stand 21, refurbished hoist 22, return wheel 28, etc. is carried out with the car 9 lifted by a lifting device. This is done from the top of car 9.
　巻上機撤去工程Ｓ１０６は、改修後の巻上機２２よりも低い位置に設置されている改修前の巻上機２を昇降路１から撤去する工程である。 The hoisting machine removal step S106 is a process of removing the hoisting machine 2 before repair, which is installed at a lower position than the hoisting machine 22 after repair, from the hoistway 1.
　このような改修後のエレベーター装置では、駆動シーブ２４の回転速度に対する釣合おもり２５の移動速度が、駆動シーブ２４の回転速度に対するかご９の移動速度よりも低い。また、昇降路１の底部からの第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さは、昇降路１の底部からの第１かごガイドレール５及び第２かごガイドレール６の高さよりも低い。また、巻上機２２は、釣合おもり２５の昇降行程よりも上方において、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８によって支持されている。 In such a refurbished elevator system, the moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24. Further, the height of the first counterweight guide rail 7 and the second counterweight guide rail 8 from the bottom of the hoistway 1 is the height of the first car guide rail 5 and the second car guide rail from the bottom of the hoistway 1. lower than the height of 6. Further, the hoisting machine 22 is supported by a first counterweight guide rail 7 and a second counterweight guide rail 8 above the lifting stroke of the counterweight 25.
　このため、昇降路１の頂部のスペースによらず、巻上機２２の設置スペースを昇降路１内に容易に確保することができる。 Therefore, the installation space for the hoist 22 can be easily secured in the hoistway 1 regardless of the space at the top of the hoistway 1.
　また、昇降路１の底部が万一冠水した場合にも、巻上機２２が濡れることが避けられる。 Furthermore, even if the bottom of the hoistway 1 should be flooded, the hoist 22 can be prevented from getting wet.
　また、昇降路１を真上から見て、第１釣合おもり吊り車２６の回転軸と、第２釣合おもり吊り車２７の回転軸とのそれぞれは、第１及び第２釣合おもりガイドレール７，８の中心間を結ぶ直線に対して、同方向へ傾斜している。このため、第１及び第２釣合おもりガイドレール７，８の位置を改修前から変えることなく、第１釣合おもり吊り車２６と第２釣合おもり吊り車２７とを釣合おもり２５に設置し、釣合おもり２５側のローピング方式を変更することができる。 When the hoistway 1 is viewed from directly above, the rotation axis of the first counterweight suspension wheel 26 and the rotation axis of the second counterweight suspension wheel 27 are connected to the first and second counterweight guides, respectively. It is inclined in the same direction with respect to the straight line connecting the centers of the rails 7 and 8. Therefore, the first and second counterweight suspension wheels 26 and 27 can be moved to the counterweight 25 without changing the positions of the first and second counterweight guide rails 7 and 8 from before the renovation. The roping method on the counterweight 25 side can be changed.
　また、改修後の釣合おもり２５の昇降時における最下位置は、改修前の釣合おもり１０昇降時における最下位置と同じである。このため、改修前のエレベーター装置において、図示しない釣合おもり緩衝器が昇降路１の底部に設置されている場合、釣合おもり緩衝器を改修後もそのまま流用することができる。 Furthermore, the lowest position of the counterweight 25 after the modification when it is raised and lowered is the same as the lowest position when the balance weight 10 is raised and lowered before the modification. Therefore, if a counterweight buffer (not shown) is installed at the bottom of the hoistway 1 in the elevator system before the renovation, the counterweight buffer can be used as is even after the renovation.
　また、実施の形態１のエレベーター装置の改修方法では、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さが、改修前の高さよりも低くされる。また、改修後の巻上機２２は、釣合おもり２５の昇降行程よりも上方において、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８によって支持される。また、駆動シーブ２４の回転速度に対する釣合おもり２５の移動速度が、駆動シーブ２４の回転速度に対するかご９の移動速度よりも低くなるように、懸架体２９が掛け回される。 Furthermore, in the elevator device repair method of the first embodiment, the heights of the first counterweight guide rail 7 and the second counterweight guide rail 8 are made lower than the heights before the repair. Moreover, the hoisting machine 22 after modification is supported by the first counterweight guide rail 7 and the second counterweight guide rail 8 above the lifting stroke of the counterweight 25. Further, the suspension body 29 is hung so that the moving speed of the counterweight 25 relative to the rotational speed of the drive sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the drive sheave 24.
　このため、昇降路１の頂部のスペースによらず、巻上機２２の設置スペースを昇降路１内に容易に確保することができる。 Therefore, the installation space for the hoist 22 can be easily secured in the hoistway 1 regardless of the space at the top of the hoistway 1.
　また、レール短縮工程Ｓ１０２では、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８のそれぞれから、少なくとも最も上に位置しているレール部材２０が撤去される。このため、改修前の第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８を流用しつつ、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８の高さを容易に低くすることができる。これにより、改修工期を短縮することができる。 Furthermore, in the rail shortening step S102, at least the uppermost rail member 20 is removed from each of the first counterweight guide rail 7 and the second counterweight guide rail 8. For this reason, while reusing the first counterweight guide rail 7 and second counterweight guide rail 8 before modification, the heights of the first counterweight guide rail 7 and second counterweight guide rail 8 can be easily adjusted. can be lowered to This makes it possible to shorten the repair work period.
　また、巻上機撤去工程Ｓ１０６では、改修前の巻上機２が撤去される。このため、昇降路１内のスペースを有効に利用することができる。 Furthermore, in the hoisting machine removal step S106, the hoisting machine 2 before repair is removed. Therefore, the space within the hoistway 1 can be used effectively.
　また、改修前のかご９と、改修前の第１かごガイドレール５と、改修前の第２かごガイドレール６とが、改修後もそのまま流用される。このため、改修工期を短縮することができる。また、改修前の第１かごガイドレール５と改修前の第２かごガイドレール６とに沿って改修前のかご９を昇降させ、かご９上から改修作業を行うことができる。 Further, the car 9 before the repair, the first car guide rail 5 before the repair, and the second car guide rail 6 before the repair are still used as they are after the repair. Therefore, the repair work period can be shortened. Furthermore, the unrenovated car 9 can be raised and lowered along the unrenovated first car guide rail 5 and the unrenovated second car guide rail 6, and the refurbishment work can be performed from above the car 9.
　また、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８に対する作業を、揚重装置によってかご９を吊り上げた状態で、かご９の上から行う。これにより、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８に対する作業を容易に行うことができる。 Further, work on the first counterweight guide rail 7 and the second counterweight guide rail 8 is performed from above the car 9 with the car 9 lifted by the lifting device. Thereby, work on the first counterweight guide rail 7 and the second counterweight guide rail 8 can be easily performed.
　なお、実施の形態１では、改修後のかご９側のローピング方式が２：１ローピング方式であり、改修後の釣合おもり２５側のローピング方式が４：１ローピング方式である。しかし、駆動シーブ２４の回転速度に対する釣合おもり２５の移動速度が、駆動シーブ２４の回転速度に対するかご９の移動速度よりも低くなれば、それぞれのローピング方式は上記の例に限定されない。 In the first embodiment, the roping method on the car 9 side after the modification is a 2:1 roping method, and the roping method on the counterweight 25 side after the modification is a 4:1 roping method. However, as long as the moving speed of the counterweight 25 relative to the rotational speed of the driving sheave 24 is lower than the moving speed of the car 9 relative to the rotational speed of the driving sheave 24, each roping method is not limited to the above example.
　即ち、かご９がｍ：１ローピング方式で吊り下げられ、釣合おもり２５がｎ：１ローピング方式で吊り下げられているとき、ｍは正の整数、ｎはｍよりも大きい正の正数であればよい。 That is, when the car 9 is suspended by the m:1 roping method and the counterweight 25 is suspended by the n:1 roping method, m is a positive integer, and n is a positive positive number larger than m. Good to have.
　また、改修後の巻上機２２は、第１釣合おもりガイドレール７及び第２釣合おもりガイドレール８のいずれか一方のみによって支持されてもよい。 Furthermore, the hoisting machine 22 after modification may be supported by only one of the first counterweight guide rail 7 and the second counterweight guide rail 8.
　また、改修後の巻上機２２は、必ずしも新たな巻上機でなくてもよい。即ち、改修前の巻上機２を移動させて、改修後の巻上機として使用してもよい。 Moreover, the hoisting machine 22 after repair does not necessarily have to be a new hoisting machine. That is, the hoisting machine 2 before modification may be moved and used as the hoisting machine after modification.
　また、改修作業の順番は、適宜変更可能であり、図７の順番に限定されない。例えば、改修前の懸架体１７が撤去された直後に、改修前の巻上機２が撤去されてもよい。 Furthermore, the order of repair work can be changed as appropriate and is not limited to the order shown in FIG. For example, immediately after the suspension body 17 before repair is removed, the hoist 2 before repair may be removed.
　１　昇降路、２　改修前の巻上機、４　駆動シーブ、５　第１かごガイドレール、６　第２かごガイドレール、７　第１釣合おもりガイドレール、８　第２釣合おもりガイドレール、９　かご、１０　改修前の釣合おもり、１７　改修前の懸架体、２０　レール部材、２２　改修後の巻上機、２４　駆動シーブ、２５　改修後の釣合おもり、２６　第１釣合おもり吊り車、２７　第２釣合おもり吊り車、２９　改修後の懸架体。 1 Hoistway, 2 Hoisting machine before renovation, 4 Drive sheave, 5 First car guide rail, 6 Second car guide rail, 7 First counterweight guide rail, 8 Second counterweight guide rail, 9 Car , 10 Counterweight before repair, 17 Suspension body before repair, 20 Rail member, 22 Hoist after repair, 24 Drive sheave, 25 Counterweight after repair, 26 First counterweight suspension car, 27 2nd counterweight suspension car, 29 Suspension body after modification.

Claims (7)

  1. 　昇降路に設けられており、かつ駆動シーブを有している巻上機、
    　前記駆動シーブに巻き掛けられている懸架体、
    　前記昇降路内に設置されている一対のかごガイドレール、
    　前記昇降路内に設置されている一対の釣合おもりガイドレール、
    　前記懸架体によって吊り下げられており、前記駆動シーブが回転することによって、前記一対のかごガイドレールに案内されて前記昇降路内を昇降するかご、及び
    　前記懸架体によって吊り下げられており、前記駆動シーブが回転することによって、前記一対の釣合おもりガイドレールに案内されて前記昇降路内を昇降する釣合おもり
    　を備え、
    　前記駆動シーブの回転速度に対する前記釣合おもりの移動速度が、前記駆動シーブの回転速度に対する前記かごの移動速度よりも低く、
    　前記昇降路の底部からの前記一対の釣合おもりガイドレールの高さは、前記底部からの前記一対のかごガイドレールの高さよりも低く、
    　前記巻上機は、前記釣合おもりの昇降行程よりも上方において、前記一対の釣合おもりガイドレールの少なくともいずれか一方によって支持されているエレベーター装置。     A hoist installed in a hoistway and having a drive sheave;
    a suspension body wrapped around the drive sheave;
    a pair of car guide rails installed in the hoistway;
    a pair of counterweight guide rails installed in the hoistway;
    a car that is suspended by the suspension body and moves up and down within the hoistway while being guided by the pair of car guide rails as the drive sheave rotates; A counterweight that moves up and down within the hoistway while being guided by the pair of counterweight guide rails as the drive sheave rotates;
    The moving speed of the counterweight relative to the rotational speed of the drive sheave is lower than the moving speed of the car relative to the rotational speed of the drive sheave,
    a height of the pair of counterweight guide rails from the bottom of the hoistway is lower than a height of the pair of car guide rails from the bottom;
    The hoisting machine is an elevator device in which the hoisting machine is supported by at least one of the pair of counterweight guide rails above the lifting stroke of the counterweight.
  2. 　前記釣合おもりに設けられており、前記懸架体が巻き掛けられている複数の釣合おもり吊り車
    　をさらに備え、
    　　前記昇降路を真上から見て、前記複数の釣合おもり吊り車の回転軸は、前記一対の釣合おもりガイドレールの中心間を結ぶ直線に対して同方向へ傾斜している請求項１に記載のエレベーター装置。     further comprising a plurality of counterweight suspension wheels provided on the counterweight and around which the suspension body is wound;
    2. When the hoistway is viewed from directly above, the rotation axes of the plurality of counterweight suspension wheels are inclined in the same direction with respect to a straight line connecting the centers of the pair of counterweight guide rails. Elevator equipment described in.
  3. 　昇降路の底部からの一対の釣合おもりガイドレールの高さを、改修前の高さよりも低くするレール短縮工程、
    　改修後の巻上機を、釣合おもりの昇降行程よりも上方において、前記一対の釣合おもりガイドレールの少なくともいずれか一方によって支持させる巻上機設置工程、及び
    　駆動シーブの回転速度に対する釣合おもりの移動速度が、前記駆動シーブの回転速度に対するかごの移動速度よりも低くなるように懸架体を掛け回す掛け回し工程
    　を含むエレベーター装置の改修方法。     a rail shortening process in which the height of the pair of counterweight guide rails from the bottom of the hoistway is lower than the height before renovation;
    A hoist installation process in which the refurbished hoist is supported by at least one of the pair of counterweight guide rails above the lifting stroke of the counterweight, and balancing the rotational speed of the drive sheave. A method for repairing an elevator system, including a step of hanging a suspension body so that the moving speed of the weight is lower than the moving speed of the car relative to the rotational speed of the drive sheave.
  4. 　前記レール短縮工程では、各前記釣合おもりガイドレールを構成している複数本のレール部材のうち、少なくとも最も上に位置するレール部材を撤去することによって、前記一対の釣合おもりガイドレールの高さを低くする請求項３に記載のエレベーター装置の改修方法。 In the rail shortening step, the height of the pair of counterweight guide rails is reduced by removing at least the uppermost rail member of the plurality of rail members forming each of the counterweight guide rails. 4. The method for repairing an elevator system according to claim 3, wherein the height of the elevator system is lowered.
  5. 　前記改修後の巻上機よりも低い位置に設置されている改修前の巻上機を撤去する巻上機撤去工程
    　をさらに含む請求項３又は請求項４にエレベーター装置の改修方法。     5. The method of repairing an elevator device according to claim 3, further comprising: a hoisting machine removal step of removing a hoisting machine before repair that is installed at a lower position than the hoisting machine after repair.
  6. 　改修前のかごと、改修前の前記一対のかごガイドレールとを、改修後も流用する請求項３から請求項５までのいずれか１項に記載のエレベーター装置の改修方法。 The method for repairing an elevator device according to any one of claims 3 to 5, wherein the car before repair and the pair of car guide rails before repair are reused even after repair.
  7. 　前記一対の釣合おもりガイドレールに対する作業は、揚重装置によって前記かごを吊り上げた状態で、前記かごの上から行う請求項６に記載のエレベーター装置の改修方法。 7. The method for repairing an elevator system according to claim 6, wherein the work on the pair of counterweight guide rails is performed from above the car while the car is lifted by a lifting device.
PCT/JP2022/020983 2022-05-20 2022-05-20 Elevator device and repair method for same WO2023223554A1 (en)

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JP2015229567A (en) * 2014-06-05 2015-12-21 三菱電機株式会社 Repairing method of no-machine room elevator and no machine room elevator

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JPH1160117A (en) * 1997-08-25 1999-03-02 Hitachi Ltd Elevator
JPH11349255A (en) * 1998-06-08 1999-12-21 Hitachi Building Systems Co Ltd Counter weight of elevator and method for changing counter rail
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