WO2020035930A1 - Construction elevator lifting height extension method and elevator rope lowering jig - Google Patents

Construction elevator lifting height extension method and elevator rope lowering jig Download PDF

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Publication number
WO2020035930A1
WO2020035930A1 PCT/JP2018/030443 JP2018030443W WO2020035930A1 WO 2020035930 A1 WO2020035930 A1 WO 2020035930A1 JP 2018030443 W JP2018030443 W JP 2018030443W WO 2020035930 A1 WO2020035930 A1 WO 2020035930A1
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WO
WIPO (PCT)
Prior art keywords
rope
sheave
lowering
jig
lifting
Prior art date
Application number
PCT/JP2018/030443
Other languages
French (fr)
Japanese (ja)
Inventor
貴行 浅井
大登 古平
井村　光芳
荻原　誠
安藤　英司
尚生 倉岡
力雄 近藤
央至 古澤
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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/JP2018/030443 priority Critical patent/WO2020035930A1/en
Priority to JP2020537336A priority patent/JP6969686B2/en
Priority to CN201880095754.6A priority patent/CN112533855B/en
Publication of WO2020035930A1 publication Critical patent/WO2020035930A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

  • the present invention relates to a method of extending a lift of a construction elevator and a rope lowering jig for the elevator.
  • Patent Document 1 discloses a lift-extension type construction elevator.
  • the lift extension type construction elevator is an elevator in which a car's ascending and descending steps are sequentially extended in accordance with the progress of construction work.
  • a lift-extended construction elevator a machine room unit equipped with a hoist is lifted in a hoistway to extend a car's hoisting stroke. According to such an elevator, workers and materials for construction work can be efficiently transported.
  • Patent Literature 1 discloses that a lifting weight of a counterweight is lifted from a rope drum after a machine room unit is lifted in a state where a lifting wheel of a counterweight around which a rope is wound is removed from a frame. Is described.
  • a braking device for controlling the movement amount and speed of the rope is used.
  • the operating suspension vehicle provided in the elevator hoist has a large weight because it is necessary to secure sufficient strength. For this reason, the method described in Patent Document 1 requires a large braking force to control the movement amount and speed of the rope.
  • An object of the present invention is to provide a method of extending a lift of a construction elevator and a jig for lowering the rope, which can reduce a braking force necessary for controlling a moving amount and a speed of a rope when extending a lifting stroke. .
  • a method for extending the lift of a construction elevator includes a sheave of a hoist mounted on a machine room unit capable of ascending and descending a hoistway, a hoist of a first elevating body capable of supporting a load by the machine room unit, and A method of extending a lift of a construction elevator in which ropes drawn out from a plurality of rope drums are wound around a lifting wheel of a second lifting body capable of supporting a load in a lower part of a hoistway, the method comprising: A rope replacement step of replacing a rope from a lifting wheel of the second lifting body to a lighter rope lowering jig, a lifting step of lifting the machine room unit after the rope replacement step, and a plurality of rope drums after the lifting step.
  • a rope lowering jig for an elevator a sheave around which a plurality of ropes are wound, a sheave mounting arm that supports the sheave above the sheave, and connected to both ends in the longitudinal direction of the sheave mounting arm, A pair of guide portions guided by a pair of guide rails provided on the hoistway and fixable to the pair of guide rails, a rotation support portion that enables the sheave to move in the rotation axis direction of the sheave, A holder that holds a state moved in the direction of the rotation axis, wherein the state of the sheave changes to any of a state positioned in a space between a pair of opposing guide portions and a state not positioned.
  • the rope is changed from the hanging wheel of the second elevating body to the rope lowering jig. For this reason, the braking force required for controlling the movement amount and speed of the rope when extending the up-and-down stroke of the construction elevator can be reduced.
  • FIG. 1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied.
  • 1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied.
  • 1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied.
  • 1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied.
  • 1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied.
  • FIG. 3 is a diagram illustrating a first example of a rope drum according to the first embodiment.
  • FIG. 3 is a diagram illustrating a first example of a rope drum according to the first embodiment.
  • FIG. 4 is a diagram illustrating a second example of the rope drum according to the first embodiment.
  • FIG. 4 is a diagram illustrating a second example of the rope drum according to the first embodiment.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • It is a front view of the rope lowering jig in Embodiment 1.
  • It is a top view of the rope lowering jig in Embodiment 1.
  • It is a top view of the rope lowering jig in Embodiment 1.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment.
  • 5 is a flowchart for describing a procedure of a head extension method in the first embodiment.
  • FIG. 1 to 5 are schematic diagrams of a first example of a construction elevator to which the head extension method according to the first embodiment is applied.
  • FIGS. 1 to 5 show the inside of the hoistway of a building under construction.
  • the construction elevator includes a first elevator 1, a second elevator 2, a machine room unit 3, and a hoist 4.
  • a plurality of ropes 8 are wound around the sheave 5 of the hoisting machine 4, the hoisting wheel 6 of the first hoisting body 1, and the hoisting wheel 7 of the second hoisting body 2.
  • a shock absorber 9 and a shock absorber 10 are provided in the pits of the hoistway.
  • the shock absorber 9 is located immediately below the first elevating body 1.
  • the shock absorber 10 is located immediately below the second elevating body 2.
  • the first lifting body 1 is one of an elevator car and a counterweight.
  • the second lifting body 2 is the other of the elevator car and the counterweight.
  • 1 to 5 illustrate a case where the first lifting body 1 is a car and the second lifting body 2 is a counterweight.
  • the first elevating body 1 can move up and down the hoistway along a pair of car guide rails (not shown).
  • the second elevating body 2 can move up and down the hoistway along a pair of counterweight guide rails (not shown).
  • the load of the second lifting body 2 can be supported at the lower part of the hoistway.
  • the second elevating body 2 may be mounted on the shock absorber 9 or the shock absorber 10, for example.
  • the second elevating body 2 may be fixed to, for example, a car guide rail or a counterweight guide rail.
  • the second elevating body 2 may be fixed to, for example, a structure on the building side under construction.
  • the machine room unit 3 can be moved up and down the hoistway by being guided by at least one of the car guide rail and the counterweight guide rail, for example.
  • the machine room unit 3 can be fixed to, for example, at least one of a car guide rail and a counterweight guide rail.
  • the machine room unit 3 may be fixed to a structure on the building side under construction, for example.
  • the machine room unit 3 is equipped with, for example, a hoisting machine 4, a control panel 11, and a plurality of rope drums 12.
  • a synchronization belt 13 is attached to the plurality of rope drums 12 as a synchronization member.
  • the machine room unit 3 is provided with, for example, one or a plurality of direction change devices 14. 1 to 5 show a case where two pulleys are provided as the direction changing device 14.
  • the number of rope drums 12 corresponds to the number of ropes 8 used for the elevator. For example, when six ropes 8 are used for an elevator, six rope drums 12 are mounted on the machine room unit 3. The rope drum 12 is previously wound with a rope 8 having a length capable of supporting the ascending and descending strokes in a state where the building is completed. The rotation of each rope drum 12 is synchronized by the synchronization member.
  • the machine room unit 3 is provided with, for example, a coupling device 15 and a braking device 16.
  • the connecting device 15 and the braking device 16 are installed, for example, at a position overlapping the first elevating body 1 when viewed from above and below.
  • the connecting device 15 and the braking device 16 are installed, for example, in the horizontal direction near the car guide rails or near the counterweight guide rails.
  • the connecting device 15 and the braking device 16 are installed at positions that are biased toward the end of the machine room unit 3 in the horizontal direction.
  • the connecting device 15 can suspend the first elevating body 1.
  • the connection device 15 is a device having a lifting function, such as a chain block or a winch. In a state where the first elevating body 1 is suspended by the connecting device 15, the load of the first elevating body 1 is supported by the machine room unit 3.
  • the braking device 16 is capable of, for example, braking the rope 8 so as to be pinched.
  • the braking device 16 can simultaneously brake at least the same number of ropes 8 as the number of the rope drums 12.
  • the magnitude of the braking force applied to the rope 8 by the braking device 16 can be adjusted stepwise, for example.
  • the direction change device 14 is provided at a position equivalent to or higher than the rope drum 12 in the vertical direction, for example.
  • the direction changing device 14 is fixed to, for example, a framework of the machine room unit 3.
  • Each rope 8 unreeled from the plurality of rope drums 12 is first wound around the direction changing device 14, for example.
  • Each rope 8 is, for example, wound around a turning device 14 and then passed through a braking device 16.
  • Each of the ropes 8 is, for example, wound around a suspension wheel 6 of the first elevating body 1 after being passed through a braking device 16.
  • Each rope 8 is wound around the sheave 5 of the hoisting machine 4 after being wound around the hanging wheel 6 of the first elevating body 1, for example.
  • Each of the ropes 8 is, for example, wound around the sheave 5 of the hoisting machine 4 and then wound around the hanging wheel 7 of the second elevating body 2.
  • Each rope 8 is connected to the machine room unit 3, for example, after being wound around the hanging wheel 7 of the second elevating body 2.
  • each rope 8 is connected to the machine room unit 3 by individual shackles, for example.
  • the shackle-side rope terminal 17 is located, for example, at the lower end of the machine room unit 3.
  • the braking device 16 can grip the rope 8 located between the rope drum 12 and the suspension wheel 6 of the first lifting / lowering body 1.
  • the load of the first lifting / lowering body 1 and the second lifting / lowering body 2 is applied to the rope 8. Is done.
  • the hoisting machine 4 is driven in this state, the first elevating body 1 and the second elevating body 2 move in a range below the machine room unit 3 in the building under construction. This range is the current ascent / descent stroke of the first elevating body 1 and the second elevating body 2.
  • the hoisting machine 4 is controlled by, for example, a control panel 11 mounted on the machine room unit 3. As the construction work progresses, the lifting process of the first lifting and lowering body 1 and the second lifting and lowering body 2 is extended.
  • the method of extending the lift of the construction elevator includes a load removal process.
  • the load removing step for example, as shown in FIG. 1, the load of the first elevating body 1 is supported by the machine room unit 3 via the connecting device 15.
  • the load removing step as shown in FIG. 1, the load of the second lifting / lowering body 2 is supported at the lower part of the hoistway.
  • the rope 8 is in a state where the load of the first lifting body 1 and the second lifting body 2 is not applied.
  • the method of elevating the lift of the construction elevator includes a rope change process.
  • the rope replacement process is performed after the load removing process.
  • the rope changing process as shown in FIG. 2, the rope 8 is changed from the hanging wheel 7 of the second elevating body 2 to the rope lowering jig 18.
  • the rope lowering jig 18 is lighter than the hanging wheel 6 and the hanging wheel 7.
  • the rope lowering jig 18 can move up and down the hoistway along a guide rail for a car or a guide rail for a counterweight, for example.
  • the rope lowering jig 18 can be fixed to, for example, a car guide rail or a counterweight guide rail.
  • the method of extending the lift of the construction elevator includes a lifting process.
  • the ascending step is performed after the rope changing step.
  • the machine room unit 3 is pulled up using a lifting device (not shown) in a state where the rope 8 is completely gripped by the braking device 16. That is, in the ascent step, the machine room unit 3 ascends in a state where the length of the rope 8 located in the range from the hanging wheel 6 of the first elevating body 1 to the shackle-side rope terminal 17 does not change.
  • the lifting device used for lifting the machine room unit 3 is, for example, a tower crane or a winch.
  • the first lifting / lowering body 1 is appropriately moved up and down by the connecting device 15 by a distance corresponding to the difference. Adjust to a suitable height.
  • the method of extending the lift of the construction elevator includes the jig lowering process.
  • the jig lowering step is performed after the raising step.
  • the state in which the rope 8 is completely gripped by the braking device 16 is released.
  • the rope lowering jig 18 is lowered by being pulled out from the rope drum 12 by the weight of the rope lowering jig 18 and the weight of the rope 8.
  • the braking force by the braking device 16 is adjusted so that the moving speed of the rope 8 does not increase too much.
  • the rope lowering jig 18 When the rope lowering jig 18 is lowered in the jig lowering step, the length of the rope 8 located below the machine room unit 3 increases as shown in FIG.
  • the rope lowering jig 18 constitutes a “sheave pushing state” by a rotation support part 25 and a holder 26 described below, so that the sheave portion is positioned at the same height as the hoisting wheel 7 of the second elevating body 2. It is possible to unload.
  • the height is a height at which a rope return step described later can be performed.
  • the method of extending the lift of the construction elevator includes a rope return process.
  • the rope returning step is performed after the jig lowering step.
  • the rope 8 is exchanged from the rope lowering jig 18 to the hanging wheel 7 of the second elevating body 2.
  • the method of extending the lift of the construction elevator includes a service resumption process.
  • the service restart process is performed after the rope return process.
  • the rope lowering jig 18 is removed from the guide rail.
  • the rope 8 is completely gripped by the braking device 16.
  • the loads of the first lifting body 1 and the second lifting body 2 are applied to the rope 8.
  • the extension of the lifting process is repeated until the building is completed.
  • the rope 8 is used as it is in the elevator after the completion of the building.
  • FIGS. 6 and 7 are views showing a first example of the rope drum according to the first embodiment.
  • FIG. 7 is a side view of the plurality of rope drums 12.
  • FIG. 6 is a sectional view taken along line AA of the plurality of rope drums 12 shown in FIG. 6 and 7 illustrate a case where the number of the rope drums 12 is six.
  • the rope drum 12 shown in FIGS. 6 and 7 is formed as a set of two rope drums.
  • a pair of rope drums 12 arranged in the front-rear direction have a common rotation axis.
  • a synchronization belt 13 is wound around three sets of rope drums 12 arranged in the vertical direction or the horizontal direction.
  • FIGS. 8 and 9 are diagrams showing a second example of the rope drum according to the first embodiment.
  • FIG. 8 is a front view of the plurality of rope drums 12.
  • FIG. 9 is a side view of the plurality of rope drums 12. 8 and 9 illustrate a case where the number of the rope drums 12 is six.
  • a synchronization arm 19 and a synchronization bolt 20 are attached to the rope drum 12 shown in FIGS. 8 and 9 as a synchronization member.
  • Each of the rope drums 12 is connected to another one of the rope drums 12 arranged in a vertical direction or a horizontal direction by a synchronization arm 19.
  • Each rope drum 12 is connected to another rope drum 12 arranged in the front-rear direction by a synchronization bolt 20.
  • FIGS. 10 to 14 are schematic diagrams of a second example of a construction elevator to which the head extension method in the first embodiment is applied.
  • the plurality of rope drums 12 are not mounted on the machine room unit 3 but are installed in a pit. For this reason, the load when lifting the machine room unit 3 is smaller than in the first example shown in FIGS. 1 to 5.
  • the order in which the rope 8 is wound around the direction changing device 14, the hoisting wheel 6 of the first hoisting body 1, the sheave 5 of the hoisting machine 4, and the hoisting wheel 7 of the second hoisting body 2 is as follows. This is the same as the first example shown in FIGS.
  • the head extension method described with reference to FIGS. 10 to 14 is the same as the head extension method described with reference to FIGS. 1 to 5 except that the rope 8 is unwound from the rope drum 12 also in the ascent step. is there.
  • FIG. 15 is a front view of the rope lowering jig in the first embodiment.
  • FIG. 16 is a top view of the rope lowering jig according to the first embodiment.
  • FIG. 17 is a side view of the rope lowering jig according to the first embodiment. 15 to 17 show the “sheave suspended state” of the rope lowering jig 18.
  • FIG. 18 is a front view of the rope lowering jig in the first embodiment.
  • FIG. 19 is a top view of the rope lowering jig according to the first embodiment.
  • FIG. 20 is a side view of the rope lowering jig according to the first embodiment.
  • FIGS. 18 to 20 show the “sheave pushed state” of the rope lowering jig 18.
  • the rope lowering jig 18 includes a sheave 21, a mounting bracket 22, a sheave mounting arm 23, a pair of guides 24, a rotation support 25, and a holder 26.
  • a plurality of ropes 8 can be wound around the sheave 21.
  • the rotating shaft 21a of the sheave 21 is disposed, for example, along a direction perpendicular to the longitudinal direction of the sheave mounting arm 23 when viewed from above and below.
  • the rotating shaft 21a is fixed to a lower end of the mounting metal 22.
  • a shaft 25a and a shaft 25b are provided at both ends of the rotation support portion 25.
  • the shaft 25a and the shaft 25b are arranged, for example, along the longitudinal direction of the sheave mounting arm 23 when viewed from above and below.
  • the upper end of the mounting metal 22 is connected to the lower end of the rotation support 25 via, for example, a shaft 25a.
  • the upper end of the rotation support portion 25 is connected to a lower protruding portion 23a of the sheave mounting arm 23 via, for example, a shaft 25b.
  • the mounting metal 22 is supported by the sheave mounting arm 23 via the rotation support 25.
  • the sheave 21 is located directly below the sheave mounting arm 23.
  • Both the shaft 25a and the shaft 25b are attached in a freely rotatable direction.
  • the rotation support part 25 can rotate and move at least until it becomes horizontal.
  • the sheave 21 and the mounting metal 22 are also pushed out in the horizontal direction in accordance with this movement.
  • the shaft 25a and the shaft 25b are freely rotatable in the rotation direction, the postures of the sheave 21 and the guide portion 24 are not affected by the rotation of the rotation support portion 25.
  • the lower end of the holder 26 is formed, for example, in a hook shape.
  • a shaft 26a that can rotate freely is provided.
  • the shaft 26a is arranged, for example, along the longitudinal direction of the sheave mounting arm 23 when viewed from above and below.
  • the upper end of the holder 26 is connected to the sheave mounting arm 23 via, for example, a shaft 26a.
  • the lower end of the holder 26 is hooked on the shaft 25a with the rotation support portion 25 being horizontal, so that the rope lowering jig 18 is in the sheave pushing state shown in FIGS.
  • the mounting metal 22 is supported by the sheave mounting arm 23 via the rotation support 25 and the holder 26.
  • the structure of the holder 26 for maintaining the rope lowering jig 18 in the sheave pushing state is not limited to those shown in FIGS.
  • a wire or the like connecting the sheave mounting arm 23 and the shaft 25a may be used as the holder 26.
  • Two notches 23b are formed on the upper and lower surfaces of the sheave mounting arm 23 to avoid interference with the rope 8, respectively.
  • the notch 23b is formed toward the side where the holding tool 26 is provided in the front-rear direction.
  • the presence of the notch 23b allows the rope 8 to pass up and down the sheave mounting arm 23 even in the sheave suspension state.
  • the rope 8 is wound around the sheave 21 from below through the notch 23b.
  • the notch 23b is sufficient to allow the rope 8 to pass through the sheave mounting arm 23 both in a state where the rope 8 is hung on the sheave 21 and in a state where the rope 8 is hung on the hanging wheel 7 of the second elevating body 2. It has a size.
  • the position and the width of the notch 23b in the longitudinal direction of the sheave mounting arm 23 are set based on, for example, the diameter of the sheave 21 and the diameter of the hanging wheel 7 of the second elevating body 2.
  • the pair of guide portions 24 are connected to both ends of the sheave mounting arm 23 in the longitudinal direction.
  • the pair of guide portions 24 face each other in a direction along the longitudinal direction of the sheave mounting arm 23.
  • the pair of guide portions 24 are guided by a pair of guide rails 27 provided on the hoistway.
  • the guide rail 27 is, for example, a car guide rail or a counterweight guide rail.
  • the guide part 24 is guided to the core of the guide rail 27 via a plurality of rollers, for example.
  • One of the guide portions 24 is indirectly connected to the sheave mounting arm 23 via the pressing portion 28.
  • One of the ends of the sheave mounting arm 23 is connected to the pressing portion 28 by a jack-up bolt 29.
  • the pressing portion 28 and the jack-up bolt 29 are an example of a mechanism for pressing the guide portion 24 against the guide rail 27 so that the position of the sheave 21 is fixed at an arbitrary height of the guide rail 27.
  • the rope lowering jig 18 can be fixed by rotating the jack-up bolt 29 so that the guide portion 24 is pressed against the guide rail 27. For example, when the jack-up bolt 29 is tightened, the force with which the guide portion 24 is pressed against the guide rail 27 increases. For example, when the jack-up bolt 29 is loosened, the force with which the guide portion 24 is pressed against the guide rail 27 decreases.
  • the rope lowering jig 18 may include, for example, a stopper (not shown).
  • the stopper is, for example, a component that can be stably arranged on the upper part of the second elevating body 2 in a state where the sheave 21 is laid on the hanging wheel 7 of the second elevating body 2. When the stopper comes into contact with the second elevating body 2, further lowering of the sheave 21 is suppressed.
  • the rope lowering jig 18 is capable of changing the state from the sheave suspension state to the sheave pushing state or vice versa using the rotation support part 25 and the holder 26.
  • the sheave suspension state the sheave 21 viewed from above and below is located in a space between a pair of guide portions 24 facing each other.
  • the sheave pushing state the sheave 21 viewed from above and below is not located in the space between the pair of opposing guide portions 24.
  • the operation is performed with the rope lowering jig 18 in a sheave pushing state.
  • the rope lowering jig 18 may be in a sheave pushing state or a sheave hanging state.
  • the state of the rope lowering jig 18 may be determined according to the installation status of the equipment in the hoistway.
  • the pushing amount of the sheave 21 is set based on, for example, the thickness of the sheave 21 and the thickness of the hanging wheel 7 of the second elevating body 2.
  • FIGS. 21 to 26 are diagrams for explaining the rope changing step and the ascending step in the first embodiment.
  • FIGS. 21 to 26 show both a front view and a side view of the second elevating body 2 supported at the lower part of the hoistway.
  • the rope changing step and the ascending step will be described in detail with reference to FIGS. 21 to 26.
  • the rope replacement step includes a step of installing the rope lowering jig 18 between the guide rails 27 of the second elevating body 2.
  • the rope lowering jig 18 is fixed to the guide rail 27 at a position above and away from the counterweight.
  • the rope lowering jig 18 is installed in a direction in which the sheave 21 can be pushed out in front of the counterweight when the counterweight is viewed from the front.
  • the rope lowering jig 18 is installed with the notch 23b of the sheave mounting arm 23 facing the counterweight when the counterweight is viewed from the front.
  • the rope 8 wound around the hanging wheel 7 passes through the notch 23b.
  • the notch 23b overlaps with the end of the outer peripheral surface of the sheave 21 and the end of the outer peripheral surface of the hoisting wheel 7 when viewed from above and below.
  • the rope changing step includes a step of preparing to remove the rope 8 from the hanging wheel 7 of the second elevating body 2.
  • this step for example, as shown in FIG. 23, the upper frame 30 on the near side of the counterweight is removed.
  • the rope lowering jig 18 is changed to a sheave pushing state.
  • the rope replacement step includes a step of arranging the rope lowering jig 18 with the hanging wheel 7 of the second elevating body 2.
  • the rope lowering jig 18 is moved so that the lower end of the sheave 21 is at the same height as the lower end of the hanging wheel 7.
  • the rope lowering jig 18 is held in a state where the sheave 21 is laid on the hanging wheel 7.
  • the rope lowering jig 18 may be fixed to the guide rail 27 by, for example, tightening a jack-up bolt 29.
  • the lowering of the rope lowering jig 18 may be suppressed by, for example, bringing a stopper into contact with the upper part of the second elevating body 2.
  • the rope changing step includes a step of changing the plurality of ropes 8 at one time.
  • this step for example, as shown by an arrow in FIG. 25, the plurality of ropes 8 removed from the hanging wheel 7 on the far side are transferred to the sheave 21 on the near side.
  • the first elevating body 1 may be pulled up using the connecting device 15.
  • the nut of the shackle-side rope terminal 17 may be rotated.
  • the ascending step is performed.
  • the rope lowering jig 18 suspended by the rope 8 ascends along the guide rail 27 as shown in FIG.
  • the sheave 21 may be in an extruded state or a suspended state.
  • the holder 26 is detached from the shaft 25b and the rotation support portion 25 is moved in the horizontal direction. It is necessary to perform the operation of moving the object from the vertical direction.
  • FIG. 27 is a flowchart for illustrating a procedure of the head extension method in the first embodiment.
  • an example of the procedure of the head extension method will be described with reference to FIG.
  • step S101 the worker performs a load removing step. Thereafter, the worker performs the process of step S102.
  • step S102 the worker performs a rope change process.
  • step S103 the worker performs a lifting process.
  • step S104 the worker performs the process of step S104.
  • step S104 the worker performs a jig lowering process.
  • step S105 the worker performs a rope return process.
  • step S106 the worker performs a service restart process. As a result, the lift extension work of the construction elevator is completed.
  • the method of extending the lift of the construction elevator includes a rope changing step, an ascending step, a jig descending step, and a rope returning step.
  • the rope replacement step is a step of replacing the rope 8 from the hanging wheel 7 of the second lifting body 2 on a rope lowering jig 18 that is lighter than the hanging wheel 7 of the second lifting body 2.
  • the raising step is a step of raising the machine room unit 3 after the rope replacement step.
  • the jig lowering step is a step of lowering the rope lowering jig 18 by feeding out the ropes 8 from the plurality of rope drums 12 after the raising step.
  • the rope returning step is a step of replacing the rope 8 with the hanging wheel 7 of the second elevating body 2 from the rope lowering jig 18 after the jig lowering step. For this reason, the braking force required for controlling the movement amount and speed of the rope 8 when extending the up-and-down stroke of the construction elevator can be reduced. As a result, for example, downsizing of the braking device 16 and a safe lifting operation of the head can be realized.
  • the lifting step for example, the machine room unit 3 is lifted while the load of the first elevating body 1 is supported by the machine room unit 3.
  • the lifting operation can be performed only once, so that the operation time can be reduced.
  • the first elevating body 1 may be fixed to a guide rail or the like without using the connecting device 15.
  • the lifting step for example, after the machine room unit 3 is pulled up in a state where the load of the first lifting body 1 is not supported by the machine room unit 3, the first lifting body 1 is Will be raised. In this case, the load when lifting the machine room unit 3 can be reduced.
  • the plurality of rope drums 12 are synchronously rotated by the synchronization member. For this reason, it is possible to prevent a difference in the feeding amount of each rope 8 from occurring.
  • the rope lowering jig 18 includes a sheave mounting arm 23, a pair of guide portions 24, a rotation support portion 25, and a holder 26.
  • the sheave mounting arm 23 supports the sheave 21 above the sheave 21.
  • the pair of guide portions 24 are connected to both ends of the sheave mounting arm 23 in the longitudinal direction, guided by a pair of guide rails 27 provided on the hoistway, and can be fixed to the pair of guide rails 27. Since the rope lowering jig 18 can be changed from the sheave suspension state to the sheave pushing state by using the rotation support portion 25 and the holder 26, the rope reattaching step can be performed in a state where the sheave 21 is laid sideways on the hanging wheel 7. .
  • the sheave 21 can be moved in the rotation axis direction of the sheave 21 by the rotation support portion 25, when the rope lowering jig 18 is inclined and inserted between the guide rails 27, the sheave 21 and the guide rail 27 can be avoided. For this reason, the rope 8 can be easily replaced with the hanging wheel 7 without performing work such as attaching and detaching parts of the rope lowering jig 18.
  • the present invention can be used for work to extend the lift of a construction elevator.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

Provided are a construction elevator lifting height extension method and an elevator rope lowering jig that can reduce the damping force that is necessary in order to control the movement amount and speed of a rope when a raising/lowering range is extended. This construction elevator lifting height extension method comprises: a rope re-hanging step in which a rope (8) is removed from a suspension sheave (7) of a second raising/lowering body (2) and re-hung on a rope lowering jig (18) that is lighter than the suspension sheave (7) of the second raising/lowering body (2); a raising step in which, after the rope re-hanging step, a machine room unit (3) is raised; a jig lowering step in which, after the raising step, the rope lowering jig (18) is lowered by letting out the rope (8) from a plurality of rope drums (12); and a rope return step in which, after the jig lowering step, the rope (8) is removed from the rope lowering jig (18) and re-hung on the suspension sheave (7) of the second raising/lowering body (2).

Description

工事用エレベーターの揚程延長方法およびエレベーター用のロープおろし治具Elevator lift extension method for construction elevators and rope lowering jigs for elevators
　この発明は、工事用エレベーターの揚程延長方法およびエレベーター用のロープおろし治具に関する。 The present invention relates to a method of extending a lift of a construction elevator and a rope lowering jig for the elevator.
　特許文献１には、揚程延長式工事用エレベーターが開示されている。揚程延長式工事用エレベーターは、かごの昇降行程が建築工事の進捗に合わせて順次延長されるエレベーターである。揚程延長式工事用エレベーターでは、巻上機を搭載した機械室ユニットを昇降路内で上昇させることで、かごの昇降行程が延長される。このようなエレベーターによれば、建築工事の作業員および資材等を効率良く運搬できる。 Patent Document 1 discloses a lift-extension type construction elevator. The lift extension type construction elevator is an elevator in which a car's ascending and descending steps are sequentially extended in accordance with the progress of construction work. In a lift-extended construction elevator, a machine room unit equipped with a hoist is lifted in a hoistway to extend a car's hoisting stroke. According to such an elevator, workers and materials for construction work can be efficiently transported.
日本実開昭５２－１１３９６８号公報Japanese Unexamined Utility Model Publication No. 52-113968
　特許文献１には、ロープが巻き掛けられた釣合おもりの吊り車が枠体から取り外された状態で機械室ユニットを上昇させた後に、ロープドラムからロープを繰り出すことで釣合おもりの吊り車を下降させる方法が記載されている。上記の方法で釣合おもりの吊り車を下降させる過程では、ロープの移動量および速度を制御するための制動装置が用いられる。エレベーターの昇降体が備える運行用の吊り車は、十分な強度を確保する必要から重量が大きくなる。このため、特許文献１に記載の方法では、ロープの移動量および速度を制御するために大きな制動力が必要となる。 Patent Literature 1 discloses that a lifting weight of a counterweight is lifted from a rope drum after a machine room unit is lifted in a state where a lifting wheel of a counterweight around which a rope is wound is removed from a frame. Is described. In the process of lowering the suspension wheel of the counterweight by the above method, a braking device for controlling the movement amount and speed of the rope is used. The operating suspension vehicle provided in the elevator hoist has a large weight because it is necessary to secure sufficient strength. For this reason, the method described in Patent Document 1 requires a large braking force to control the movement amount and speed of the rope.
　この発明は、上記の課題を解決するためになされた。その目的は、昇降行程を延長する際にロープの移動量および速度を制御するために必要な制動力を小さくできる工事用エレベーターの揚程延長方法およびエレベーター用のロープおろし治具を提供することである。 This invention has been made to solve the above problems. An object of the present invention is to provide a method of extending a lift of a construction elevator and a jig for lowering the rope, which can reduce a braking force necessary for controlling a moving amount and a speed of a rope when extending a lifting stroke. .
　この発明に係る工事用エレベーターの揚程延長方法は、昇降路を昇降可能な機械室ユニットに搭載された巻上機の綱車、機械室ユニットによって荷重を支持可能な第１昇降体の吊り車および昇降路の下部において荷重を支持可能な第２昇降体の吊り車に複数のロープドラムから繰り出されたロープが巻き掛けられた工事用エレベーターの揚程延長方法であって、第２昇降体の吊り車よりも軽量なロープおろし治具に第２昇降体の吊り車からロープを掛け替えるロープ掛け替え工程と、ロープ掛け替え工程の後に機械室ユニットを上昇させる上昇工程と、上昇工程の後に複数のロープドラムからロープを繰り出すことでロープおろし治具を下降させる治具下降工程と、治具下降工程の後にロープおろし治具から第２昇降体の吊り車にロープを掛け替えるロープ戻し工程と、を備える。 A method for extending the lift of a construction elevator according to the present invention includes a sheave of a hoist mounted on a machine room unit capable of ascending and descending a hoistway, a hoist of a first elevating body capable of supporting a load by the machine room unit, and A method of extending a lift of a construction elevator in which ropes drawn out from a plurality of rope drums are wound around a lifting wheel of a second lifting body capable of supporting a load in a lower part of a hoistway, the method comprising: A rope replacement step of replacing a rope from a lifting wheel of the second lifting body to a lighter rope lowering jig, a lifting step of lifting the machine room unit after the rope replacement step, and a plurality of rope drums after the lifting step. A jig lowering step of lowering the rope lowering jig by unwinding the rope, and after the lowering step of the jig, the rope is lowered from the rope lowering jig to the hanging wheel of the second lifting member. Only replace comprising a rope return step.
　この発明に係るエレベーター用のロープおろし治具は、複数のロープが巻き掛けられるシーブと、シーブよりも上方でシーブを支持するシーブ取付腕と、シーブ取付腕の長手方向における両端部に連結され、昇降路に設けられた一対のガイドレールに案内され、一対のガイドレールに固定可能である一対のガイド部と、シーブをシーブの回転軸方向に移動可能とする回転支持部と、シーブがシーブの回転軸方向に移動された状態を保持する保持具と、を備え、シーブの状態は、対向する一対のガイド部の間の空間に位置する状態および位置しない状態のいずれにも変化するものである。 A rope lowering jig for an elevator according to the present invention, a sheave around which a plurality of ropes are wound, a sheave mounting arm that supports the sheave above the sheave, and connected to both ends in the longitudinal direction of the sheave mounting arm, A pair of guide portions guided by a pair of guide rails provided on the hoistway and fixable to the pair of guide rails, a rotation support portion that enables the sheave to move in the rotation axis direction of the sheave, A holder that holds a state moved in the direction of the rotation axis, wherein the state of the sheave changes to any of a state positioned in a space between a pair of opposing guide portions and a state not positioned. .
　これらの発明によれば、第２昇降体の吊り車からロープおろし治具にロープが掛け替えられる。このため、工事用エレベーターの昇降行程を延長する際にロープの移動量および速度を制御するために必要な制動力を小さくできる。 According to these inventions, the rope is changed from the hanging wheel of the second elevating body to the rope lowering jig. For this reason, the braking force required for controlling the movement amount and speed of the rope when extending the up-and-down stroke of the construction elevator can be reduced.
実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。1 is a schematic diagram of a first example of a construction elevator to which a head extension method according to Embodiment 1 is applied. 実施の形態１におけるロープドラムの第１例を示す図である。FIG. 3 is a diagram illustrating a first example of a rope drum according to the first embodiment. 実施の形態１におけるロープドラムの第１例を示す図である。FIG. 3 is a diagram illustrating a first example of a rope drum according to the first embodiment. 実施の形態１におけるロープドラムの第２例を示す図である。FIG. 4 is a diagram illustrating a second example of the rope drum according to the first embodiment. 実施の形態１におけるロープドラムの第２例を示す図である。FIG. 4 is a diagram illustrating a second example of the rope drum according to the first embodiment. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied. 実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。FIG. 3 is a schematic diagram of a second example of a construction elevator to which the head extension method according to the first embodiment is applied. 実施の形態１におけるロープおろし治具の正面図である。It is a front view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープおろし治具の上面図である。It is a top view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープおろし治具の側面図である。It is a side view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープおろし治具の正面図である。It is a front view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープおろし治具の上面図である。It is a top view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープおろし治具の側面図である。It is a side view of the rope lowering jig in Embodiment 1. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。FIG. 3 is a diagram for explaining a rope changing step and a lifting step according to the first embodiment. 実施の形態１における揚程延長方法の手順を説明するためのフローチャートである。5 is a flowchart for describing a procedure of a head extension method in the first embodiment.
　以下、添付の図面を参照して実施の形態について説明する。各図において、同一または相当する部分には同一の符号が付される。重複する説明は、適宜簡略化あるいは省略する。 Hereinafter, embodiments will be described with reference to the accompanying drawings. In each drawing, the same or corresponding portions are denoted by the same reference characters. Duplicate descriptions will be simplified or omitted as appropriate.
実施の形態１．
　図１から図５は、実施の形態１における揚程延長方法が適用される工事用エレベーターの第１例の模式図である。 Embodiment 1 FIG.
1 to 5 are schematic diagrams of a first example of a construction elevator to which the head extension method according to the first embodiment is applied.
　図１から図５は、建築中の建物の昇降路内の様子を示している。例えば、図１に示すように、工事用エレベーターは、第１昇降体１、第２昇降体２、機械室ユニット３および巻上機４を備える。巻上機４の綱車５、第１昇降体１の吊り車６および第２昇降体２の吊り車７には、複数のロープ８が巻き掛けられる。 FIGS. 1 to 5 show the inside of the hoistway of a building under construction. For example, as shown in FIG. 1, the construction elevator includes a first elevator 1, a second elevator 2, a machine room unit 3, and a hoist 4. A plurality of ropes 8 are wound around the sheave 5 of the hoisting machine 4, the hoisting wheel 6 of the first hoisting body 1, and the hoisting wheel 7 of the second hoisting body 2.
　昇降路のピットには、緩衝器９および緩衝器１０が設けられる。緩衝器９は、第１昇降体１の直下に位置する。緩衝器１０は、第２昇降体２の直下に位置する。 ピ ッ ト A shock absorber 9 and a shock absorber 10 are provided in the pits of the hoistway. The shock absorber 9 is located immediately below the first elevating body 1. The shock absorber 10 is located immediately below the second elevating body 2.
　第１昇降体１は、エレベーターのかご又は釣合おもりのうち一方である。第２昇降体２は、エレベーターのかご又は釣合おもりのうち他方である。図１から図５は、第１昇降体１がかごであり、第２昇降体２が釣合おもりである場合を例示している。この場合、第１昇降体１は、図示しない一対のかご用ガイドレールに沿って昇降路を昇降可能である。また、この場合、第２昇降体２は、図示しない一対の釣合おもり用ガイドレールに沿って昇降路を昇降可能である。 The first lifting body 1 is one of an elevator car and a counterweight. The second lifting body 2 is the other of the elevator car and the counterweight. 1 to 5 illustrate a case where the first lifting body 1 is a car and the second lifting body 2 is a counterweight. In this case, the first elevating body 1 can move up and down the hoistway along a pair of car guide rails (not shown). In this case, the second elevating body 2 can move up and down the hoistway along a pair of counterweight guide rails (not shown).
　第２昇降体２の荷重は、昇降路の下部において支持可能である。第２昇降体２は、例えば、緩衝器９又は緩衝器１０に載置されてもよい。第２昇降体２は、例えば、かご用ガイドレール又は釣合おもり用ガイドレールに固定されてもよい。第２昇降体２は、例えば、建築中の建物側の構造体に固定されてもよい。 荷重 The load of the second lifting body 2 can be supported at the lower part of the hoistway. The second elevating body 2 may be mounted on the shock absorber 9 or the shock absorber 10, for example. The second elevating body 2 may be fixed to, for example, a car guide rail or a counterweight guide rail. The second elevating body 2 may be fixed to, for example, a structure on the building side under construction.
　機械室ユニット３は、例えば、かご用ガイドレールおよび釣合おもり用ガイドレールの少なくとも一方に案内されて昇降路を昇降可能である。機械室ユニット３は、例えば、かご用ガイドレールおよび釣合おもり用ガイドレールの少なくとも一方に対して固定可能である。機械室ユニット３は、例えば、建築中の建物側の構造体に固定されてもよい。 The machine room unit 3 can be moved up and down the hoistway by being guided by at least one of the car guide rail and the counterweight guide rail, for example. The machine room unit 3 can be fixed to, for example, at least one of a car guide rail and a counterweight guide rail. The machine room unit 3 may be fixed to a structure on the building side under construction, for example.
　機械室ユニット３には、例えば、巻上機４、制御盤１１および複数のロープドラム１２が搭載される。複数のロープドラム１２には、同期用部材として、例えば、同期用ベルト１３が取り付けられる。機械室ユニット３には、例えば、１つ又は複数の方向転換装置１４が設けられる。図１から図５は、方向転換装置１４として２つのプーリーが設けられた場合を示す。 The machine room unit 3 is equipped with, for example, a hoisting machine 4, a control panel 11, and a plurality of rope drums 12. For example, a synchronization belt 13 is attached to the plurality of rope drums 12 as a synchronization member. The machine room unit 3 is provided with, for example, one or a plurality of direction change devices 14. 1 to 5 show a case where two pulleys are provided as the direction changing device 14. FIG.
　ロープドラム１２の個数は、エレベーターに使用されるロープ８の本数に対応する。例えば、エレベーターに６本のロープ８が使用される場合、６個のロープドラム１２が機械室ユニット３に搭載される。ロープドラム１２には、建物が完成した状態での昇降行程に対応可能な長さのロープ８が予め巻き付けられている。各ロープドラム１２の回転は、同期用部材によって同期される。 個数 The number of rope drums 12 corresponds to the number of ropes 8 used for the elevator. For example, when six ropes 8 are used for an elevator, six rope drums 12 are mounted on the machine room unit 3. The rope drum 12 is previously wound with a rope 8 having a length capable of supporting the ascending and descending strokes in a state where the building is completed. The rotation of each rope drum 12 is synchronized by the synchronization member.
　機械室ユニット３には、例えば、連結装置１５および制動装置１６が設けられる。連結装置１５および制動装置１６は、例えば、上下方向から見て第１昇降体１と重なる位置に設置される。連結装置１５および制動装置１６は、例えば、水平方向においてかご用ガイドレール付近又は釣合おもり用ガイドレール付近に設置される。連結装置１５および制動装置１６は、水平方向において機械室ユニット３の端部側に偏った位置に設置される。 The machine room unit 3 is provided with, for example, a coupling device 15 and a braking device 16. The connecting device 15 and the braking device 16 are installed, for example, at a position overlapping the first elevating body 1 when viewed from above and below. The connecting device 15 and the braking device 16 are installed, for example, in the horizontal direction near the car guide rails or near the counterweight guide rails. The connecting device 15 and the braking device 16 are installed at positions that are biased toward the end of the machine room unit 3 in the horizontal direction.
　連結装置１５は、第１昇降体１を吊り下げることが可能である。連結装置１５は、例えば、チェーンブロック又はウインチ等の揚重機能を有する装置である。連結装置１５によって第１昇降体１が吊り下げられた状態において、第１昇降体１の荷重は機械室ユニット３に支持される。 The connecting device 15 can suspend the first elevating body 1. The connection device 15 is a device having a lifting function, such as a chain block or a winch. In a state where the first elevating body 1 is suspended by the connecting device 15, the load of the first elevating body 1 is supported by the machine room unit 3.
　制動装置１６は、例えば、挟み込むようにしてロープ８を制動することが可能である。制動装置１６は、少なくともロープドラム１２の個数と同じ本数のロープ８を同時に制動することが可能である。制動装置１６がロープ８に加える制動力の大きさは、例えば、段階的に調節可能である。 The braking device 16 is capable of, for example, braking the rope 8 so as to be pinched. The braking device 16 can simultaneously brake at least the same number of ropes 8 as the number of the rope drums 12. The magnitude of the braking force applied to the rope 8 by the braking device 16 can be adjusted stepwise, for example.
　方向転換装置１４は、例えば、上下方向においてロープドラム１２と同等の位置又はロープドラム１２よりも高い位置に設けられる。方向転換装置１４は、例えば、機械室ユニット３の枠組に固定される。 The direction change device 14 is provided at a position equivalent to or higher than the rope drum 12 in the vertical direction, for example. The direction changing device 14 is fixed to, for example, a framework of the machine room unit 3.
　複数のロープドラム１２から繰り出された各ロープ８は、例えば、最初に方向転換装置１４に巻き掛けられる。各ロープ８は、例えば、方向転換装置１４に巻き掛けられた後に制動装置１６に通される。各ロープ８は、例えば、制動装置１６に通された後に第１昇降体１の吊り車６に巻き掛けられる。各ロープ８は、例えば、第１昇降体１の吊り車６に巻き掛けられた後に巻上機４の綱車５に巻き掛けられる。各ロープ８は、例えば、巻上機４の綱車５に巻き掛けられた後に第２昇降体２の吊り車７に巻き掛けられる。各ロープ８は、例えば、第２昇降体２の吊り車７に巻き掛けられた後に機械室ユニット３に接続される。 各 Each rope 8 unreeled from the plurality of rope drums 12 is first wound around the direction changing device 14, for example. Each rope 8 is, for example, wound around a turning device 14 and then passed through a braking device 16. Each of the ropes 8 is, for example, wound around a suspension wheel 6 of the first elevating body 1 after being passed through a braking device 16. Each rope 8 is wound around the sheave 5 of the hoisting machine 4 after being wound around the hanging wheel 6 of the first elevating body 1, for example. Each of the ropes 8 is, for example, wound around the sheave 5 of the hoisting machine 4 and then wound around the hanging wheel 7 of the second elevating body 2. Each rope 8 is connected to the machine room unit 3, for example, after being wound around the hanging wheel 7 of the second elevating body 2.
　各ロープ８の端末は、例えば、それぞれ個別のシャックルで機械室ユニット３に接続される。シャックル側ロープ端末１７は、例えば、機械室ユニット３の下端部に位置する。 端末 The terminals of each rope 8 are connected to the machine room unit 3 by individual shackles, for example. The shackle-side rope terminal 17 is located, for example, at the lower end of the machine room unit 3.
　制動装置１６は、ロープドラム１２と第１昇降体１の吊り車６との間に位置するロープ８を把持することが可能である。連結装置１５によって第１昇降体１が吊り下げられておらず且つ制動装置１６によってロープ８が完全に把持された状態では、ロープ８に第１昇降体１および第２昇降体２の荷重が負荷される。この状態で巻上機４が駆動すると、建築中の建物における機械室ユニット３よりも下方の範囲を第１昇降体１および第２昇降体２が移動する。この範囲が、第１昇降体１および第２昇降体２の現時点での昇降行程である。巻上機４は、例えば、機械室ユニット３に搭載された制御盤１１によって制御される。建築工事の進捗に合わせて、第１昇降体１および第２昇降体２の昇降行程は延長される。 The braking device 16 can grip the rope 8 located between the rope drum 12 and the suspension wheel 6 of the first lifting / lowering body 1. In a state where the first lifting / lowering body 1 is not suspended by the connecting device 15 and the rope 8 is completely gripped by the braking device 16, the load of the first lifting / lowering body 1 and the second lifting / lowering body 2 is applied to the rope 8. Is done. When the hoisting machine 4 is driven in this state, the first elevating body 1 and the second elevating body 2 move in a range below the machine room unit 3 in the building under construction. This range is the current ascent / descent stroke of the first elevating body 1 and the second elevating body 2. The hoisting machine 4 is controlled by, for example, a control panel 11 mounted on the machine room unit 3. As the construction work progresses, the lifting process of the first lifting and lowering body 1 and the second lifting and lowering body 2 is extended.
　以下、図１から図５を用いて、工事用エレベーターの揚程延長方法を説明する。 Hereinafter, a method of extending the lift of a construction elevator will be described with reference to FIGS. 1 to 5.
　工事用エレベーターの揚程延長方法は、荷重除去工程を含む。荷重除去工程では、例えば、図１に示すように、第１昇降体１の荷重が連結装置１５を介して機械室ユニット３に支持される。荷重除去工程では、図１に示すように、第２昇降体２の荷重が昇降路の下部において支持される。荷重除去工程により、ロープ８に第１昇降体１および第２昇降体２の荷重が負荷されていない状態となる。 The method of extending the lift of the construction elevator includes a load removal process. In the load removing step, for example, as shown in FIG. 1, the load of the first elevating body 1 is supported by the machine room unit 3 via the connecting device 15. In the load removing step, as shown in FIG. 1, the load of the second lifting / lowering body 2 is supported at the lower part of the hoistway. By the load removing step, the rope 8 is in a state where the load of the first lifting body 1 and the second lifting body 2 is not applied.
　工事用エレベーターの揚程延長方法は、ロープ掛け替え工程を含む。ロープ掛け替え工程は、荷重除去工程の後に行われる。ロープ掛け替え工程では、図２に示すように、第２昇降体２の吊り車７からロープおろし治具１８にロープ８が掛け替えられる。 The method of elevating the lift of the construction elevator includes a rope change process. The rope replacement process is performed after the load removing process. In the rope changing process, as shown in FIG. 2, the rope 8 is changed from the hanging wheel 7 of the second elevating body 2 to the rope lowering jig 18.
　ロープおろし治具１８は、吊り車６および吊り車７よりも軽量である。ロープおろし治具１８は、例えば、かご用ガイドレール又は釣合おもり用ガイドレールに沿って昇降路を昇降可能である。ロープおろし治具１８は、例えば、かご用ガイドレール又は釣合おもり用ガイドレールに対して固定可能である。 The rope lowering jig 18 is lighter than the hanging wheel 6 and the hanging wheel 7. The rope lowering jig 18 can move up and down the hoistway along a guide rail for a car or a guide rail for a counterweight, for example. The rope lowering jig 18 can be fixed to, for example, a car guide rail or a counterweight guide rail.
　工事用エレベーターの揚程延長方法は、上昇工程を含む。上昇工程は、ロープ掛け替え工程の後に行われる。上昇工程では、例えば、制動装置１６によってロープ８が完全に把持された状態で、図示しない揚重装置を用いて機械室ユニット３が引き上げられる。つまり、上昇工程では、第１昇降体１の吊り車６からシャックル側ロープ端末１７までの範囲に位置するロープ８の長さが変化しない状態で機械室ユニット３が上昇する。機械室ユニット３の引き上げに用いられる揚重装置は、例えば、タワークレーン又はウインチ等である。 The method of extending the lift of the construction elevator includes a lifting process. The ascending step is performed after the rope changing step. In the lifting process, for example, the machine room unit 3 is pulled up using a lifting device (not shown) in a state where the rope 8 is completely gripped by the braking device 16. That is, in the ascent step, the machine room unit 3 ascends in a state where the length of the rope 8 located in the range from the hanging wheel 6 of the first elevating body 1 to the shackle-side rope terminal 17 does not change. The lifting device used for lifting the machine room unit 3 is, for example, a tower crane or a winch.
　上昇工程で機械室ユニット３が上昇すると、図３に示すように、機械室ユニット３が上昇した分だけ第１昇降体１およびロープおろし治具１８も上昇する。目的階に到達した機械室ユニット３は、固定される。 (3) When the machine room unit 3 is raised in the raising process, as shown in FIG. 3, the first lifting body 1 and the rope lowering jig 18 are also raised by the amount that the machine room unit 3 is raised. The machine room unit 3 that has reached the destination floor is fixed.
　機械室ユニット３の上昇前後で建物の階高が変わる場合等には、その差分に対応する距離だけ連結装置１５によって第１昇降体１を上昇あるいは下降させることで、第１昇降体１を適切な高さに調整する。 When the floor height of the building changes before and after the machine room unit 3 is raised, the first lifting / lowering body 1 is appropriately moved up and down by the connecting device 15 by a distance corresponding to the difference. Adjust to a suitable height.
　工事用エレベーターの揚程延長方法は、治具下降工程を含む。治具下降工程は、上昇工程の後に行われる。治具下降工程では、制動装置１６によってロープ８が完全に把持された状態が解除される。治具下降工程では、ロープおろし治具１８の重量およびロープ８の自重でロープドラム１２からロープ８が繰り出されることでロープおろし治具１８が降ろされていく。治具下降工程では、ロープ８の移動速度が上がり過ぎないように制動装置１６による制動力が調節される。 延長 The method of extending the lift of the construction elevator includes the jig lowering process. The jig lowering step is performed after the raising step. In the jig lowering step, the state in which the rope 8 is completely gripped by the braking device 16 is released. In the jig lowering process, the rope lowering jig 18 is lowered by being pulled out from the rope drum 12 by the weight of the rope lowering jig 18 and the weight of the rope 8. In the jig lowering step, the braking force by the braking device 16 is adjusted so that the moving speed of the rope 8 does not increase too much.
　治具下降工程でロープおろし治具１８が下降すると、図４に示すように、機械室ユニット３の下方に位置するロープ８の長さが増える。ロープおろし治具１８は、後述する回転支持部２５および保持具２６によって「シーブ押出し状態」を構成することで、シーブ部分が第２昇降体２の吊り車７と同等の高さに位置するまで降ろすことが可能である。当該高さは、後述するロープ戻し工程を行える高さである。当該高さまでロープおろし治具１８を下降させた後は、例えば、後述する押し当て部２８又はストッパー等を用いて、シーブ部分がロープ８によって懸垂されていなくても落下しないようにロープおろし治具１８を安定させる。 (4) When the rope lowering jig 18 is lowered in the jig lowering step, the length of the rope 8 located below the machine room unit 3 increases as shown in FIG. The rope lowering jig 18 constitutes a “sheave pushing state” by a rotation support part 25 and a holder 26 described below, so that the sheave portion is positioned at the same height as the hoisting wheel 7 of the second elevating body 2. It is possible to unload. The height is a height at which a rope return step described later can be performed. After lowering the rope lowering jig 18 to the height, for example, using a pressing portion 28 or a stopper, which will be described later, a rope lowering jig so as not to drop even if the sheave portion is not suspended by the rope 8. Stabilize 18.
　工事用エレベーターの揚程延長方法は、ロープ戻し工程を含む。ロープ戻し工程は、治具下降工程の後に行われる。ロープ戻し工程では、図５に示すように、ロープおろし治具１８から第２昇降体２の吊り車７にロープ８が掛け替えられる。 The method of extending the lift of the construction elevator includes a rope return process. The rope returning step is performed after the jig lowering step. In the rope returning step, as shown in FIG. 5, the rope 8 is exchanged from the rope lowering jig 18 to the hanging wheel 7 of the second elevating body 2.
　工事用エレベーターの揚程延長方法は、サービス再開工程を含む。サービス再開工程は、ロープ戻し工程の後に行われる。サービス再開工程では、ロープおろし治具１８がガイドレールから取り外される。サービス再開工程では、制動装置１６によってロープ８が完全に把持される。サービス再開工程では、第１昇降体１および第２昇降体２の荷重がロープ８に負荷される。サービス再開工程が完了すると、昇降行程が延長された工事用エレベーターが運行可能となる。 延長 The method of extending the lift of the construction elevator includes a service resumption process. The service restart process is performed after the rope return process. In the service restarting step, the rope lowering jig 18 is removed from the guide rail. In the service restarting step, the rope 8 is completely gripped by the braking device 16. In the service restarting step, the loads of the first lifting body 1 and the second lifting body 2 are applied to the rope 8. When the service resuming process is completed, the construction elevator with the extended up and down stroke can be operated.
　昇降行程の延長は、建物が完成するまで繰り返し行われる。ロープ８は、建物の完成後にエレベーターでそのまま使用される。 The extension of the lifting process is repeated until the building is completed. The rope 8 is used as it is in the elevator after the completion of the building.
　図６および図７は、実施の形態１におけるロープドラムの第１例を示す図である。 FIGS. 6 and 7 are views showing a first example of the rope drum according to the first embodiment.
　図７は、複数のロープドラム１２の側面図である。図６は、図７に示す複数のロープドラム１２のＡ－Ａ断面図である。図６および図７は、ロープドラム１２の個数が６個である場合を例示する。 FIG. 7 is a side view of the plurality of rope drums 12. FIG. 6 is a sectional view taken along line AA of the plurality of rope drums 12 shown in FIG. 6 and 7 illustrate a case where the number of the rope drums 12 is six.
　図６および図７に示すロープドラム１２は、２個で一組の構造に形成される。前後方向に並ぶ一組のロープドラム１２は、共通の回転軸を有する。上下方向又は左右方向に並ぶ三組のロープドラム１２には、同期用ベルト１３が巻き掛けられる。 ロ ー プ The rope drum 12 shown in FIGS. 6 and 7 is formed as a set of two rope drums. A pair of rope drums 12 arranged in the front-rear direction have a common rotation axis. A synchronization belt 13 is wound around three sets of rope drums 12 arranged in the vertical direction or the horizontal direction.
　図８および図９は、実施の形態１におけるロープドラムの第２例を示す図である。 FIGS. 8 and 9 are diagrams showing a second example of the rope drum according to the first embodiment.
　図８は、複数のロープドラム１２の正面図である。図９は、複数のロープドラム１２の側面図である。図８および図９は、ロープドラム１２の個数が６個である場合を例示する。 FIG. 8 is a front view of the plurality of rope drums 12. FIG. FIG. 9 is a side view of the plurality of rope drums 12. 8 and 9 illustrate a case where the number of the rope drums 12 is six.
　図８および図９に示すロープドラム１２には、同期用部材として、同期用アーム１９および同期用ボルト２０が取り付けられる。各ロープドラム１２は、上下方向又は左右方向に並ぶ他の１個のロープドラム１２と同期用アーム１９で連結される。各ロープドラム１２は、前後方向に並ぶ他の１個のロープドラム１２と同期用ボルト２０で連結される。 ロ ー プ A synchronization arm 19 and a synchronization bolt 20 are attached to the rope drum 12 shown in FIGS. 8 and 9 as a synchronization member. Each of the rope drums 12 is connected to another one of the rope drums 12 arranged in a vertical direction or a horizontal direction by a synchronization arm 19. Each rope drum 12 is connected to another rope drum 12 arranged in the front-rear direction by a synchronization bolt 20.
　図１０から図１４は、実施の形態１における揚程延長方法が適用される工事用エレベーターの第２例の模式図である。 FIGS. 10 to 14 are schematic diagrams of a second example of a construction elevator to which the head extension method in the first embodiment is applied.
　図１０から図１４に示す工事用エレベーターの第２例において、複数のロープドラム１２は、機械室ユニット３には搭載されず、ピットに設置される。このため、機械室ユニット３を揚重する際の負荷は、図１から図５に示す第１例よりも小さい。第２例において、方向転換装置１４、第１昇降体１の吊り車６、巻上機４の綱車５および第２昇降体２の吊り車７に対してロープ８が巻き掛けられる順番は、図１から図５に示す第１例と同様である。図１０から図１４を用いて説明される揚程延長方法は、上昇工程においてもロープドラム１２からロープ８が繰り出される点を除き、図１から図５を用いて説明される揚程延長方法と同様である。 に お い て In the second example of the construction elevator shown in FIGS. 10 to 14, the plurality of rope drums 12 are not mounted on the machine room unit 3 but are installed in a pit. For this reason, the load when lifting the machine room unit 3 is smaller than in the first example shown in FIGS. 1 to 5. In the second example, the order in which the rope 8 is wound around the direction changing device 14, the hoisting wheel 6 of the first hoisting body 1, the sheave 5 of the hoisting machine 4, and the hoisting wheel 7 of the second hoisting body 2 is as follows. This is the same as the first example shown in FIGS. The head extension method described with reference to FIGS. 10 to 14 is the same as the head extension method described with reference to FIGS. 1 to 5 except that the rope 8 is unwound from the rope drum 12 also in the ascent step. is there.
　図１５は、実施の形態１におけるロープおろし治具の正面図である。図１６は、実施の形態１におけるロープおろし治具の上面図である。図１７は、実施の形態１におけるロープおろし治具の側面図である。図１５から図１７は、ロープおろし治具１８の「シーブ懸垂状態」を示す。 FIG. 15 is a front view of the rope lowering jig in the first embodiment. FIG. 16 is a top view of the rope lowering jig according to the first embodiment. FIG. 17 is a side view of the rope lowering jig according to the first embodiment. 15 to 17 show the “sheave suspended state” of the rope lowering jig 18.
　図１８は、実施の形態１におけるロープおろし治具の正面図である。図１９は、実施の形態１におけるロープおろし治具の上面図である。図２０は、実施の形態１におけるロープおろし治具の側面図である。図１８から図２０は、ロープおろし治具１８の「シーブ押出し状態」を示す。 FIG. 18 is a front view of the rope lowering jig in the first embodiment. FIG. 19 is a top view of the rope lowering jig according to the first embodiment. FIG. 20 is a side view of the rope lowering jig according to the first embodiment. FIGS. 18 to 20 show the “sheave pushed state” of the rope lowering jig 18.
　ロープおろし治具１８は、シーブ２１、取付金２２、シーブ取付腕２３、一対のガイド部２４、回転支持部２５および保持具２６を備える。シーブ２１には、複数のロープ８を巻き掛けることが可能である。 The rope lowering jig 18 includes a sheave 21, a mounting bracket 22, a sheave mounting arm 23, a pair of guides 24, a rotation support 25, and a holder 26. A plurality of ropes 8 can be wound around the sheave 21.
　シーブ２１の回転軸２１ａは、例えば、上下方向から見てシーブ取付腕２３の長手方向に直交する方向に沿って配置される。回転軸２１ａは、取付金２２の下端部に固定される。回転支持部２５の両端には、軸２５ａおよび軸２５ｂが設けられる。軸２５ａおよび軸２５ｂは、例えば、上下方向から見てシーブ取付腕２３の長手方向に沿って配置される。取付金２２の上端は、例えば、軸２５ａを介して回転支持部２５の下端に連結される。回転支持部２５の上端は、例えば、軸２５ｂを介してシーブ取付腕２３の下方突出部２３ａに連結される。シーブ懸垂状態において、取付金２２は、回転支持部２５を介して、シーブ取付腕２３によって支持される。シーブ懸垂状態において、シーブ２１は、シーブ取付腕２３の直下に位置する。 The rotating shaft 21a of the sheave 21 is disposed, for example, along a direction perpendicular to the longitudinal direction of the sheave mounting arm 23 when viewed from above and below. The rotating shaft 21a is fixed to a lower end of the mounting metal 22. A shaft 25a and a shaft 25b are provided at both ends of the rotation support portion 25. The shaft 25a and the shaft 25b are arranged, for example, along the longitudinal direction of the sheave mounting arm 23 when viewed from above and below. The upper end of the mounting metal 22 is connected to the lower end of the rotation support 25 via, for example, a shaft 25a. The upper end of the rotation support portion 25 is connected to a lower protruding portion 23a of the sheave mounting arm 23 via, for example, a shaft 25b. In the sheave suspension state, the mounting metal 22 is supported by the sheave mounting arm 23 via the rotation support 25. In the sheave suspension state, the sheave 21 is located directly below the sheave mounting arm 23.
　軸２５ａおよび軸２５ｂは、どちらも回転方向自在に取り付けられている。回転支持部２５は、少なくとも水平になるまで回転移動が可能である。回転支持部２５が回転移動されると、シーブ２１および取付金２２もこの動きに合わせて水平方向に押出される。この際に、軸２５ａおよび軸２５ｂが回転方向自在であるため、シーブ２１およびガイド部２４の姿勢は回転支持部２５の回転に影響を受けない。 Both the shaft 25a and the shaft 25b are attached in a freely rotatable direction. The rotation support part 25 can rotate and move at least until it becomes horizontal. When the rotation support 25 is rotated, the sheave 21 and the mounting metal 22 are also pushed out in the horizontal direction in accordance with this movement. At this time, since the shaft 25a and the shaft 25b are freely rotatable in the rotation direction, the postures of the sheave 21 and the guide portion 24 are not affected by the rotation of the rotation support portion 25.
　保持具２６の下端は、例えば、鉤状に形成される。保持具２６の上端には、例えば、回転方向自在の軸２６ａが設けられる。軸２６ａは、例えば、上下方向から見てシーブ取付腕２３の長手方向に沿って配置される。保持具２６の上端は、例えば、軸２６ａを介してシーブ取付腕２３に連結される。例えば、回転支持部２５を水平にして保持具２６の下端を軸２５ａに引っ掛けることで、ロープおろし治具１８は、図１８から図２０に示すシーブ押出し状態となる。シーブ押出し状態において、取付金２２は、回転支持部２５および保持具２６を介して、シーブ取付腕２３によって支持される。 下端 The lower end of the holder 26 is formed, for example, in a hook shape. At the upper end of the holder 26, for example, a shaft 26a that can rotate freely is provided. The shaft 26a is arranged, for example, along the longitudinal direction of the sheave mounting arm 23 when viewed from above and below. The upper end of the holder 26 is connected to the sheave mounting arm 23 via, for example, a shaft 26a. For example, the lower end of the holder 26 is hooked on the shaft 25a with the rotation support portion 25 being horizontal, so that the rope lowering jig 18 is in the sheave pushing state shown in FIGS. In the sheave pushing state, the mounting metal 22 is supported by the sheave mounting arm 23 via the rotation support 25 and the holder 26.
　なお、ロープおろし治具１８のシーブ押出し状態を維持するための保持具２６の構造は、図１５から図２０に示すものに限らない。例えば、シーブ取付腕２３と軸２５ａとを連結するワイヤー等を保持具２６として用いてもよい。 構造 The structure of the holder 26 for maintaining the rope lowering jig 18 in the sheave pushing state is not limited to those shown in FIGS. For example, a wire or the like connecting the sheave mounting arm 23 and the shaft 25a may be used as the holder 26.
　シーブ取付腕２３の上面および下面にはそれぞれ、ロープ８との干渉を避けるための切欠き２３ｂが２箇所ずつ形成されている。切欠き２３ｂは、前後方向において保持具２６が設けられた側に向かって形成される。切欠き２３ｂが存在することにより、シーブ懸垂状態の場合でも、ロープ８がシーブ取付腕２３を上下に通過することができる。ロープ８は、切欠き２３ｂを通ってシーブ２１に下側から巻き掛けられる。切欠き２３ｂは、シーブ２１にロープ８を掛けた状態および第２昇降体２の吊り車７にロープ８が掛かった状態のどちらの場合でもロープ８がシーブ取付腕２３を通過することができるだけの大きさを有している。シーブ取付腕２３の長手方向における切欠き２３ｂの位置および横幅は、例えば、シーブ２１の直径および第２昇降体２の吊り車７の直径に基づいて設定される。 Two notches 23b are formed on the upper and lower surfaces of the sheave mounting arm 23 to avoid interference with the rope 8, respectively. The notch 23b is formed toward the side where the holding tool 26 is provided in the front-rear direction. The presence of the notch 23b allows the rope 8 to pass up and down the sheave mounting arm 23 even in the sheave suspension state. The rope 8 is wound around the sheave 21 from below through the notch 23b. The notch 23b is sufficient to allow the rope 8 to pass through the sheave mounting arm 23 both in a state where the rope 8 is hung on the sheave 21 and in a state where the rope 8 is hung on the hanging wheel 7 of the second elevating body 2. It has a size. The position and the width of the notch 23b in the longitudinal direction of the sheave mounting arm 23 are set based on, for example, the diameter of the sheave 21 and the diameter of the hanging wheel 7 of the second elevating body 2.
　一対のガイド部２４は、シーブ取付腕２３の長手方向における両端に連結される。一対のガイド部２４は、シーブ取付腕２３の長手方向に沿った方向において対向する。一対のガイド部２４は、昇降路に設けられた一対のガイドレール２７に案内される。ガイドレール２７は、例えば、かご用ガイドレール又は釣合おもり用ガイドレールである。ガイド部２４は、例えば、複数のローラーを介してガイドレール２７の芯に案内される。ガイド部２４がガイドレール２７に案内されている状態において、シーブ取付腕２３およびガイド部２４は、対向する一対のガイドレール２７の間の空間に位置する。 The pair of guide portions 24 are connected to both ends of the sheave mounting arm 23 in the longitudinal direction. The pair of guide portions 24 face each other in a direction along the longitudinal direction of the sheave mounting arm 23. The pair of guide portions 24 are guided by a pair of guide rails 27 provided on the hoistway. The guide rail 27 is, for example, a car guide rail or a counterweight guide rail. The guide part 24 is guided to the core of the guide rail 27 via a plurality of rollers, for example. When the guide portion 24 is guided by the guide rail 27, the sheave mounting arm 23 and the guide portion 24 are located in a space between a pair of opposed guide rails 27.
　ガイド部２４のうち一方は、押し当て部２８を介して間接的にシーブ取付腕２３に連結される。シーブ取付腕２３の端部のうち一方は、ジャッキアップボルト２９で押し当て部２８に連結される。押し当て部２８およびジャッキアップボルト２９は、シーブ２１の位置がガイドレール２７の任意の高さに固定されるよう、ガイド部２４をガイドレール２７に押し当てる機構の一例である。ロープおろし治具１８は、ジャッキアップボルト２９の回転によりガイド部２４がガイドレール２７に押し付けられることで固定可能である。例えば、ジャッキアップボルト２９が締められると、ガイド部２４がガイドレール２７に押し付けられる力が強まる。例えば、ジャッキアップボルト２９が緩められると、ガイド部２４がガイドレール２７に押し付けられる力が弱まる。 One of the guide portions 24 is indirectly connected to the sheave mounting arm 23 via the pressing portion 28. One of the ends of the sheave mounting arm 23 is connected to the pressing portion 28 by a jack-up bolt 29. The pressing portion 28 and the jack-up bolt 29 are an example of a mechanism for pressing the guide portion 24 against the guide rail 27 so that the position of the sheave 21 is fixed at an arbitrary height of the guide rail 27. The rope lowering jig 18 can be fixed by rotating the jack-up bolt 29 so that the guide portion 24 is pressed against the guide rail 27. For example, when the jack-up bolt 29 is tightened, the force with which the guide portion 24 is pressed against the guide rail 27 increases. For example, when the jack-up bolt 29 is loosened, the force with which the guide portion 24 is pressed against the guide rail 27 decreases.
　ロープおろし治具１８は、例えば、図示しないストッパーを備えてもよい。ストッパーは、例えば、第２昇降体２の吊り車７にシーブ２１が横付けされた状態で第２昇降体２の上部に安定して配置することができる部品である。ストッパーが第２昇降体２に接触すると、シーブ２１のさらなる下降が抑制される。 The rope lowering jig 18 may include, for example, a stopper (not shown). The stopper is, for example, a component that can be stably arranged on the upper part of the second elevating body 2 in a state where the sheave 21 is laid on the hanging wheel 7 of the second elevating body 2. When the stopper comes into contact with the second elevating body 2, further lowering of the sheave 21 is suppressed.
　ロープおろし治具１８は、回転支持部２５および保持具２６を用いて、シーブ懸垂状態からシーブ押出し状態への状態変化又はその逆の状態変化が可能である。シーブ懸垂状態において、上下方向から見たシーブ２１は、対向する一対のガイド部２４の間の空間に位置する。シーブ押出し状態において、上下方向から見たシーブ２１は、対向する一対のガイド部２４の間の空間に位置しない。ロープ掛け替え工程およびロープ戻し工程では、ロープおろし治具１８をシーブ押出し状態にして作業が行われる。上昇工程および治具下降工程では、ロープおろし治具１８はシーブ押出し状態でもシーブ懸垂状態でもよい。この場合、例えば、昇降路内の機器の設置状況に応じてロープおろし治具１８の状態を決定すればよい。シーブ２１の押出し量は、例えば、シーブ２１の厚さおよび第２昇降体２の吊り車７の厚さに基づいて設定される。 The rope lowering jig 18 is capable of changing the state from the sheave suspension state to the sheave pushing state or vice versa using the rotation support part 25 and the holder 26. In the sheave suspension state, the sheave 21 viewed from above and below is located in a space between a pair of guide portions 24 facing each other. In the sheave pushing state, the sheave 21 viewed from above and below is not located in the space between the pair of opposing guide portions 24. In the rope changing process and the rope returning process, the operation is performed with the rope lowering jig 18 in a sheave pushing state. In the raising step and the jig lowering step, the rope lowering jig 18 may be in a sheave pushing state or a sheave hanging state. In this case, for example, the state of the rope lowering jig 18 may be determined according to the installation status of the equipment in the hoistway. The pushing amount of the sheave 21 is set based on, for example, the thickness of the sheave 21 and the thickness of the hanging wheel 7 of the second elevating body 2.
　図２１から図２６は、実施の形態１におけるロープ掛け替え工程および上昇工程を説明するための図である。 FIGS. 21 to 26 are diagrams for explaining the rope changing step and the ascending step in the first embodiment.
　図２１から図２６は、昇降路の下部において支持された第２昇降体２の正面図と側面図とを併せて示す。以下、図２１から図２６を用いて、ロープ掛け替え工程および上昇工程を詳細に説明する。 FIGS. 21 to 26 show both a front view and a side view of the second elevating body 2 supported at the lower part of the hoistway. Hereinafter, the rope changing step and the ascending step will be described in detail with reference to FIGS. 21 to 26.
　ロープ掛け替え工程は、ロープおろし治具１８を第２昇降体２のガイドレール２７の間に設置する工程を含む。この工程では、例えば、図２１および図２２に示すように、釣合おもりから離れた上方の位置で、ロープおろし治具１８がガイドレール２７に固定される。ロープおろし治具１８は、釣合おもりを正面から見た場合に、釣合おもりの手前側にシーブ２１を押出し可能な向きで設置される。ロープおろし治具１８は、釣合おもりを正面から見た場合に、シーブ取付腕２３の切欠き２３ｂを釣合おもりの手前側に向けて設置される。この工程でロープおろし治具１８が設置されると、吊り車７に巻き掛けられているロープ８が切欠き２３ｂを通る。このときロープおろし治具１８がシーブ懸垂状態であれば、切欠き２３ｂは、上下方向から見てシーブ２１の外周面の端部および吊り車７の外周面の端部と重なる。 The rope replacement step includes a step of installing the rope lowering jig 18 between the guide rails 27 of the second elevating body 2. In this step, for example, as shown in FIGS. 21 and 22, the rope lowering jig 18 is fixed to the guide rail 27 at a position above and away from the counterweight. The rope lowering jig 18 is installed in a direction in which the sheave 21 can be pushed out in front of the counterweight when the counterweight is viewed from the front. The rope lowering jig 18 is installed with the notch 23b of the sheave mounting arm 23 facing the counterweight when the counterweight is viewed from the front. When the rope lowering jig 18 is installed in this step, the rope 8 wound around the hanging wheel 7 passes through the notch 23b. At this time, if the rope lowering jig 18 is in the sheave suspension state, the notch 23b overlaps with the end of the outer peripheral surface of the sheave 21 and the end of the outer peripheral surface of the hoisting wheel 7 when viewed from above and below.
　ロープ掛け替え工程は、第２昇降体２の吊り車７からロープ８を外す準備をする工程を含む。この工程では、例えば、図２３に示すように、釣合おもりの手前側の上枠３０が取り外される。この工程では、例えば、図２３に示すように、ロープおろし治具１８がシーブ押出し状態に変化させられる。 The rope changing step includes a step of preparing to remove the rope 8 from the hanging wheel 7 of the second elevating body 2. In this step, for example, as shown in FIG. 23, the upper frame 30 on the near side of the counterweight is removed. In this step, for example, as shown in FIG. 23, the rope lowering jig 18 is changed to a sheave pushing state.
　ロープ掛け替え工程は、ロープおろし治具１８を第２昇降体２の吊り車７と並べる工程を含む。この工程では、例えば、図２４に示すように、シーブ２１の下端が吊り車７の下端と同じ高さになるようにロープおろし治具１８が移動される。その後、ロープおろし治具１８は、シーブ２１が吊り車７に横付けされた状態で保持される。この状態でロープおろし治具１８を保持するためには、例えば、ジャッキアップボルト２９を締めることでロープおろし治具１８をガイドレール２７に固定してもよい。この状態でロープおろし治具１８を保持するためには、例えば、第２昇降体２の上部にストッパーを接触させることでロープおろし治具１８の下降を抑制してもよい。 The rope replacement step includes a step of arranging the rope lowering jig 18 with the hanging wheel 7 of the second elevating body 2. In this step, for example, as shown in FIG. 24, the rope lowering jig 18 is moved so that the lower end of the sheave 21 is at the same height as the lower end of the hanging wheel 7. Thereafter, the rope lowering jig 18 is held in a state where the sheave 21 is laid on the hanging wheel 7. In order to hold the rope lowering jig 18 in this state, the rope lowering jig 18 may be fixed to the guide rail 27 by, for example, tightening a jack-up bolt 29. In order to hold the rope lowering jig 18 in this state, the lowering of the rope lowering jig 18 may be suppressed by, for example, bringing a stopper into contact with the upper part of the second elevating body 2.
　ロープ掛け替え工程は、複数のロープ８を一度に掛け替える工程を含む。この工程では、例えば、図２５に矢印で示すように、奥側の吊り車７から外された複数のロープ８が手前側のシーブ２１に移される。なお、吊り車７からロープ８を外すためには、巻上機４とシャックル側ロープ端末１７との間に位置するロープ８を緩めておく必要がある。ロープ８を緩めるためには、例えば、連結装置１５を用いて第１昇降体１を引き上げてもよい。ロープ８を緩めるためには、例えば、シャックル側ロープ端末１７のナットを回転させてもよい。 The rope changing step includes a step of changing the plurality of ropes 8 at one time. In this step, for example, as shown by an arrow in FIG. 25, the plurality of ropes 8 removed from the hanging wheel 7 on the far side are transferred to the sheave 21 on the near side. In order to remove the rope 8 from the hoisting wheel 7, it is necessary to loosen the rope 8 located between the hoisting machine 4 and the shackle-side rope terminal 17. In order to loosen the rope 8, for example, the first elevating body 1 may be pulled up using the connecting device 15. In order to loosen the rope 8, for example, the nut of the shackle-side rope terminal 17 may be rotated.
　ロープ８がシーブ２１に移された後に、上昇工程が行われる。上昇工程では、図２６に示すように、ロープ８に吊り下げられたロープおろし治具１８がガイドレール２７に沿って上昇する。このとき、シーブ２１の状態は押出し状態又は懸垂状態のどちらでもよいが、シーブ２１を鉛直懸垂状態にして上昇工程を行う場合は、保持具２６を軸２５ｂから外して回転支持部２５を水平方向から鉛直方向に移動させる作業が必要となる。 (4) After the rope 8 is moved to the sheave 21, the ascending step is performed. In the ascending step, the rope lowering jig 18 suspended by the rope 8 ascends along the guide rail 27 as shown in FIG. At this time, the sheave 21 may be in an extruded state or a suspended state. However, when the sheave 21 is vertically suspended and the ascent step is performed, the holder 26 is detached from the shaft 25b and the rotation support portion 25 is moved in the horizontal direction. It is necessary to perform the operation of moving the object from the vertical direction.
　図２７は、実施の形態１における揚程延長方法の手順を説明するためのフローチャートである。以下、図２７を用いて、揚程延長方法の手順の一例を説明する。 FIG. 27 is a flowchart for illustrating a procedure of the head extension method in the first embodiment. Hereinafter, an example of the procedure of the head extension method will be described with reference to FIG.
　ステップＳ１０１では、作業員は、荷重除去工程を行う。その後、作業員は、ステップＳ１０２の工程を行う。ステップＳ１０２では、作業員は、ロープ掛け替え工程を行う。その後、作業員は、ステップＳ１０３の工程を行う。ステップＳ１０３では、作業員は、上昇工程を行う。その後、作業員は、ステップＳ１０４の工程を行う。ステップＳ１０４では、作業員は、治具下降工程を行う。その後、作業員は、ステップＳ１０５の工程を行う。ステップＳ１０５では、作業員は、ロープ戻し工程を行う。その後、作業員は、ステップＳ１０６の工程を行う。ステップＳ１０６では、作業員は、サービス再開工程を行う。その結果、工事用エレベーターの揚程延長作業が完了する。 In step S101, the worker performs a load removing step. Thereafter, the worker performs the process of step S102. In step S102, the worker performs a rope change process. Thereafter, the worker performs the process of step S103. In step S103, the worker performs a lifting process. Thereafter, the worker performs the process of step S104. In step S104, the worker performs a jig lowering process. Thereafter, the worker performs the process of step S105. In step S105, the worker performs a rope return process. Thereafter, the worker performs the process of step S106. In step S106, the worker performs a service restart process. As a result, the lift extension work of the construction elevator is completed.
　以上で説明した実施の形態１によれば、工事用エレベーターの揚程延長方法は、ロープ掛け替え工程と、上昇工程と、治具下降工程と、ロープ戻し工程と、を備える。ロープ掛け替え工程は、第２昇降体２の吊り車７よりも軽量なロープおろし治具１８に第２昇降体２の吊り車７からロープ８を掛け替える工程である。上昇工程は、ロープ掛け替え工程の後に機械室ユニット３を上昇させる工程である。治具下降工程は、上昇工程の後に複数のロープドラム１２からロープ８を繰り出すことでロープおろし治具１８を下降させる工程である。ロープ戻し工程は、治具下降工程の後にロープおろし治具１８から第２昇降体２の吊り車７にロープ８を掛け替える工程である。このため、工事用エレベーターの昇降行程を延長する際にロープ８の移動量および速度を制御するために必要な制動力を小さくできる。その結果、例えば、制動装置１６の小型化および安全な揚程延長作業を実現できる。 According to the first embodiment described above, the method of extending the lift of the construction elevator includes a rope changing step, an ascending step, a jig descending step, and a rope returning step. The rope replacement step is a step of replacing the rope 8 from the hanging wheel 7 of the second lifting body 2 on a rope lowering jig 18 that is lighter than the hanging wheel 7 of the second lifting body 2. The raising step is a step of raising the machine room unit 3 after the rope replacement step. The jig lowering step is a step of lowering the rope lowering jig 18 by feeding out the ropes 8 from the plurality of rope drums 12 after the raising step. The rope returning step is a step of replacing the rope 8 with the hanging wheel 7 of the second elevating body 2 from the rope lowering jig 18 after the jig lowering step. For this reason, the braking force required for controlling the movement amount and speed of the rope 8 when extending the up-and-down stroke of the construction elevator can be reduced. As a result, for example, downsizing of the braking device 16 and a safe lifting operation of the head can be realized.
　また、上昇工程では、例えば、機械室ユニット３によって第１昇降体１の荷重が支持された状態で機械室ユニット３が引き上げられる。この場合、揚重作業が一度で済むため、作業時間を短縮できる。 In the lifting step, for example, the machine room unit 3 is lifted while the load of the first elevating body 1 is supported by the machine room unit 3. In this case, the lifting operation can be performed only once, so that the operation time can be reduced.
　また、荷重除去工程では、例えば、連結装置１５を用いずに、第１昇降体１がガイドレール等に固定されてもよい。この場合、上昇工程では、例えば、機械室ユニット３によって第１昇降体１の荷重が支持されていない状態で機械室ユニット３が引き上げられた後に、連結装置１５を用いて第１昇降体１が引き上げられる。この場合、機械室ユニット３を揚重する際の負荷を軽減できる。 In the load removing step, for example, the first elevating body 1 may be fixed to a guide rail or the like without using the connecting device 15. In this case, in the lifting step, for example, after the machine room unit 3 is pulled up in a state where the load of the first lifting body 1 is not supported by the machine room unit 3, the first lifting body 1 is Will be raised. In this case, the load when lifting the machine room unit 3 can be reduced.
　また、複数のロープドラム１２は、同期用部材により同期して回転する。このため、個々のロープ８の繰り出し量に差が生じることを防止できる。 Further, the plurality of rope drums 12 are synchronously rotated by the synchronization member. For this reason, it is possible to prevent a difference in the feeding amount of each rope 8 from occurring.
　また、ロープおろし治具１８は、シーブ取付腕２３、一対のガイド部２４、回転支持部２５および保持具２６を備える。シーブ取付腕２３は、シーブ２１よりも上方でシーブ２１を支持する。一対のガイド部２４は、シーブ取付腕２３の長手方向における両端部に連結され、昇降路に設けられた一対のガイドレール２７に案内され、一対のガイドレール２７に固定可能である。ロープおろし治具１８は、回転支持部２５および保持具２６を用いてシーブ懸垂状態からシーブ押出し状態に変化できるため、シーブ２１が吊り車７に横付けされた状態でロープ掛け替え工程を行うことができる。 ロ ー プ The rope lowering jig 18 includes a sheave mounting arm 23, a pair of guide portions 24, a rotation support portion 25, and a holder 26. The sheave mounting arm 23 supports the sheave 21 above the sheave 21. The pair of guide portions 24 are connected to both ends of the sheave mounting arm 23 in the longitudinal direction, guided by a pair of guide rails 27 provided on the hoistway, and can be fixed to the pair of guide rails 27. Since the rope lowering jig 18 can be changed from the sheave suspension state to the sheave pushing state by using the rotation support portion 25 and the holder 26, the rope reattaching step can be performed in a state where the sheave 21 is laid sideways on the hanging wheel 7. .
　また、シーブ２１が回転支持部２５によりシーブ２１の回転軸方向に移動することができるため、ロープおろし治具１８を斜めにしてガイドレール２７の間に挿入しようとした時、シーブ２１とガイドレール２７との干渉を回避できる。このため、ロープおろし治具１８の部品を着脱する等の作業を行うことなく、吊り車７との間で容易にロープ８の掛け替えを行うことができる。 In addition, since the sheave 21 can be moved in the rotation axis direction of the sheave 21 by the rotation support portion 25, when the rope lowering jig 18 is inclined and inserted between the guide rails 27, the sheave 21 and the guide rail 27 can be avoided. For this reason, the rope 8 can be easily replaced with the hanging wheel 7 without performing work such as attaching and detaching parts of the rope lowering jig 18.
　この発明は、工事用エレベーターの揚程延長作業に利用できる。 The present invention can be used for work to extend the lift of a construction elevator.
１　第１昇降体
２　第２昇降体
３　機械室ユニット
４　巻上機
５　綱車
６　吊り車
７　吊り車
８　ロープ
９　緩衝器
１０　緩衝器
１１　制御盤
１２　ロープドラム
１３　同期用ベルト
１４　方向転換装置
１５　連結装置
１６　制動装置
１７　シャックル側ロープ端末
１８　ロープおろし治具
１９　同期用アーム
２０　同期用ボルト
２１　シーブ
２１ａ　回転軸
２２　取付金
２３　シーブ取付腕
２３ａ　下方突出部
２３ｂ　切欠き
２４　ガイド部
２５　回転支持部
２５ａ　軸
２５ｂ　軸
２６　保持具
２６ａ　軸
２７　ガイドレール
２８　押し当て部
２９　ジャッキアップボルト
３０　上枠 DESCRIPTION OF SYMBOLS 1 1st raising / lowering body 2 2nd raising / lowering body 3 Machine room unit 4 Hoisting machine 5 Sheave 6 Hanging wheel 7 Hanging wheel 8 Rope 9 Shock absorber 10 Shock absorber 11 Control board 12 Rope drum 13 Synchronization belt 14 Direction change device 15 Connecting device 16 Brake device 17 Shackle side rope terminal 18 Rope lowering jig 19 Synchronization arm 20 Synchronization bolt 21 Sheave 21a Rotating shaft 22 Mounting metal 23 Sheave mounting arm 23a Lower projection 23b Notch 24 Guide 25 Rotation support 25a Axis 25b Axis 26 Holder 26a Axis 27 Guide rail 28 Pressing portion 29 Jack-up bolt 30 Upper frame

Claims (8)

  1. 　昇降路を昇降可能な機械室ユニットに搭載された巻上機の綱車、前記機械室ユニットによって荷重を支持可能な第１昇降体の吊り車および昇降路の下部において荷重を支持可能な第２昇降体の吊り車に複数のロープドラムから繰り出されたロープが巻き掛けられた工事用エレベーターの揚程延長方法であって、
    　前記第２昇降体の吊り車よりも軽量なロープおろし治具に前記第２昇降体の吊り車からロープを掛け替えるロープ掛け替え工程と、
    　前記ロープ掛け替え工程の後に前記機械室ユニットを上昇させる上昇工程と、
    　前記上昇工程の後に前記複数のロープドラムからロープを繰り出すことで前記ロープおろし治具を下降させる治具下降工程と、
    　前記治具下降工程の後に前記ロープおろし治具から前記第２昇降体の吊り車にロープを掛け替えるロープ戻し工程と、
    を備えた工事用エレベーターの揚程延長方法。     A sheave of a hoist mounted on a machine room unit that can move up and down a hoistway, a hoist of a first hoist that can support a load by the machine room unit, and a second hoist that can support a load at a lower portion of the hoistway. A method of extending the lift of a construction elevator in which ropes pulled out from a plurality of rope drums are wound around a lifting wheel of a lifting body,
    A rope changing step of changing a rope from a hanging wheel of the second elevating body to a rope lowering jig lighter than a hanging wheel of the second elevating body;
    An elevating step of elevating the machine room unit after the rope replacement step,
    A jig lowering step of lowering the rope lowering jig by feeding out a rope from the plurality of rope drums after the raising step,
    A rope returning step of replacing a rope from the rope lowering jig to a hanging wheel of the second elevating body after the jig lowering step;
    How to extend the lift of a construction elevator equipped with
  2. 　前記上昇工程では、前記機械室ユニットによって前記第１昇降体の荷重が支持された状態で前記機械室ユニットが引き上げられる請求項１に記載の工事用エレベーターの揚程延長方法。 The method according to claim 1, wherein in the lifting step, the machine room unit is lifted while the load of the first lifting body is supported by the machine room unit.
  3. 　前記上昇工程では、前記機械室ユニットによって前記第１昇降体の荷重が支持されていない状態で前記機械室ユニットが引き上げられた後に前記第１昇降体が引き上げられる請求項１に記載の工事用エレベーターの揚程延長方法。 2. The elevator according to claim 1, wherein in the lifting step, the first lifting body is lifted after the machine room unit is lifted in a state where the load of the first lifting body is not supported by the machine room unit. 3. How to extend the head.
  4. 　前記複数のロープドラムは、同期して回転する請求項１から請求項３のいずれか１項に記載の工事用エレベーターの揚程延長方法。 The method according to any one of claims 1 to 3, wherein the plurality of rope drums rotate synchronously.
  5. 　複数のロープが巻き掛けられるシーブと、
    　前記シーブよりも上方で前記シーブを支持するシーブ取付腕と、
    　前記シーブ取付腕の長手方向における両端部に連結され、昇降路に設けられた一対のガイドレールに案内され、前記一対のガイドレールに固定可能である一対のガイド部と、
    　前記シーブを前記シーブの回転軸方向に移動可能とする回転支持部と、
    　前記シーブが前記シーブの回転軸方向に移動された状態を保持する保持具と、
    を備え、
    　前記シーブの状態は、対向する前記一対のガイド部の間の空間に位置する状態および位置しない状態のいずれにも変化するエレベーター用のロープおろし治具。     A sheave around which multiple ropes are wound,
    A sheave mounting arm that supports the sheave above the sheave,
    A pair of guide portions connected to both ends in the longitudinal direction of the sheave mounting arm, guided by a pair of guide rails provided on the hoistway, and fixable to the pair of guide rails,
    A rotation support unit that enables the sheave to move in the rotation axis direction of the sheave,
    A holder for holding the sheave moved in the rotation axis direction of the sheave,
    With
    A rope lowering jig for an elevator, wherein a state of the sheave changes to any of a state located in a space between the pair of opposed guide portions and a state not located.
  6. 　前記一対のガイドレールに案内される第２昇降体の吊り車に前記シーブが横付けされた状態で第２昇降体の上部に接触することで前記シーブのさらなる下降を抑制するストッパーが設けられた請求項５に記載のエレベーター用のロープおろし治具。 A stopper which suppresses further lowering of the sheave by contacting an upper portion of the second elevating body in a state where the sheave is laid sideways on a hanging wheel of the second elevating body guided by the pair of guide rails is provided. Item 6. A rope lowering jig for an elevator according to item 5.
  7. 　前記シーブの位置が前記一対のガイドレールの任意の高さに固定されるよう前記一対のガイド部を前記一対のガイドレールに押し当てる機構が設けられた請求項５又は請求項６に記載のエレベーター用のロープおろし治具。 The elevator according to claim 5 or 6, further comprising a mechanism for pressing the pair of guide portions against the pair of guide rails so that the position of the sheave is fixed to an arbitrary height of the pair of guide rails. Rope lowering jig.
  8. 　前記シーブ取付腕は、前記シーブの外周面の端部および前記一対のガイドレールに案内される第２昇降体の吊り車の外周面の端部と重なる部分に切欠きが形成された請求項５から請求項７のいずれか１項に記載のエレベーター用のロープおろし治具。 6. A notch is formed in the sheave mounting arm at a portion overlapping an end of an outer peripheral surface of the sheave and an end of an outer peripheral surface of a hanging wheel of a second lifting / lowering body guided by the pair of guide rails. An elevator rope lowering jig according to any one of claims 1 to 7.
PCT/JP2018/030443 2018-08-16 2018-08-16 Construction elevator lifting height extension method and elevator rope lowering jig WO2020035930A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021186492A1 (en) * 2020-03-16 2021-09-23 株式会社日立製作所 Construction elevator device and governor rope extension method for elevator
US11396442B2 (en) 2020-05-09 2022-07-26 Otis Elevator Company Low cost roped jump lift concept
WO2024069711A1 (en) * 2022-09-26 2024-04-04 三菱電機ビルソリューションズ株式会社 Elevator main cable replacement method and replacement assisting tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48110870U (en) * 1972-03-28 1973-12-20
JPS5161934A (en) * 1974-11-25 1976-05-28 Koshihara Tetsukosho Kk ROOPUMAKIAGESHIKISHOKOSOCHINIOKERU MASUTOCHOBUKATSUSHASHIJISOCHI
JPS52113968U (en) * 1976-02-25 1977-08-30
JP2000344440A (en) * 1999-06-04 2000-12-12 Hitachi Building Systems Co Ltd Method of operation for hanging main rope of 2:1 roping elevator and main rope guide device therefor
WO2017183189A1 (en) * 2016-04-22 2017-10-26 三菱電機株式会社 Elevator rope guidance device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI108431B (en) * 1999-02-24 2002-01-31 Kone Corp Hissijõrjestelmõ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48110870U (en) * 1972-03-28 1973-12-20
JPS5161934A (en) * 1974-11-25 1976-05-28 Koshihara Tetsukosho Kk ROOPUMAKIAGESHIKISHOKOSOCHINIOKERU MASUTOCHOBUKATSUSHASHIJISOCHI
JPS52113968U (en) * 1976-02-25 1977-08-30
JP2000344440A (en) * 1999-06-04 2000-12-12 Hitachi Building Systems Co Ltd Method of operation for hanging main rope of 2:1 roping elevator and main rope guide device therefor
WO2017183189A1 (en) * 2016-04-22 2017-10-26 三菱電機株式会社 Elevator rope guidance device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021186492A1 (en) * 2020-03-16 2021-09-23 株式会社日立製作所 Construction elevator device and governor rope extension method for elevator
JPWO2021186492A1 (en) * 2020-03-16 2021-09-23
JP7404506B2 (en) 2020-03-16 2023-12-25 株式会社日立製作所 Construction elevator equipment and elevator main rope extension method
US11396442B2 (en) 2020-05-09 2022-07-26 Otis Elevator Company Low cost roped jump lift concept
WO2024069711A1 (en) * 2022-09-26 2024-04-04 三菱電機ビルソリューションズ株式会社 Elevator main cable replacement method and replacement assisting tool

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