EP4234471A1 - Bauaufzug und verfahren zur verlängerung des hauptseils eines bauaufzugs - Google Patents

Bauaufzug und verfahren zur verlängerung des hauptseils eines bauaufzugs Download PDF

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Publication number
EP4234471A1
EP4234471A1 EP20958614.8A EP20958614A EP4234471A1 EP 4234471 A1 EP4234471 A1 EP 4234471A1 EP 20958614 A EP20958614 A EP 20958614A EP 4234471 A1 EP4234471 A1 EP 4234471A1
Authority
EP
European Patent Office
Prior art keywords
rope
machine room
main rope
gripper
pulley
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20958614.8A
Other languages
English (en)
French (fr)
Other versions
EP4234471A4 (de
Inventor
Yuto Hino
Ryo Komatsu
Akitomo Igarashi
Naofumi Ogata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP4234471A1 publication Critical patent/EP4234471A1/de
Publication of EP4234471A4 publication Critical patent/EP4234471A4/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation

Definitions

  • the present invention relates to a construction elevator and a method for extending the main rope of the construction elevator.
  • a construction elevator has been proposed as an elevator that is provided in a building structure under construction so as to transport materials and people.
  • a machine room unit having a hoisting machine, a control panel, and the like is raised according to the progress of the construction of the building structure, thereby expanding the range in which a car moves vertically, that is, the operable range.
  • the work of extending a main rope connected to the car is also performed.
  • Conventional construction elevators include, for example, one as disclosed in PTL 1.
  • the main rope is gripped with a predetermined force by a gripping device in order to prevent the main rope from being drawn from a main rope reel against the intention of the operator under its own weight when raising the machine room unit. Then, by raising the machine room unit, the main rope slides on the gripping device and the main rope is extended.
  • an object of the present invention is to provide a construction elevator that enables main rope extension work without damaging the main rope, and a method for extending the main rope of the construction elevator.
  • this construction elevator includes a rope reel, an elevating body, a pulley, a first rope gripper, and a second rope gripper.
  • a main rope is wound around the rope reel.
  • the elevating body is wrapped with the main rope drawn from the rope reel, and moves vertically in a hoistway of a building structure.
  • the pulley is disposed on the main rope between the rope reel and the elevating body and wrapped with the main rope drawn from the rope reel.
  • the first rope gripper releasably grips the main rope on the rope reel side of the pulley.
  • the second rope gripper releasably grips the main rope on the elevating body side of the pulley.
  • the pulley is supported so as to be movable along the direction in which the elevating body moves vertically.
  • a method for extending the main rope of the construction elevator having the above-described configuration includes the following steps (1) to (4):
  • the machine room unit can be easily installed without damaging the main rope.
  • FIGS. 1 to 12 a construction elevator and a method for extending a main rope according to embodiments will be described with reference to FIGS. 1 to 12 .
  • common members are denoted by the same reference signs.
  • FIG. 1 is a schematic configuration diagram illustrating the construction elevator according to the present example.
  • the elevator illustrated in FIG. 1 is a construction elevator that is provided in a building structure under construction and used for transporting materials and people.
  • a construction elevator 1 is equipped with a support member 2 disposed at the top of a hoistway 100 of the building structure, a machine room unit 3, and a lifting device 6 for lifting the machine room unit 3.
  • the construction elevator 1 is also equipped with a hoisting machine 9, a main rope 10, a car 11 on which people and materials are loaded, and a counterweight 12.
  • the car 11 and the counterweight 12 illustrate examples of elevating bodies. Note that the positional relationship between the car 11 and the counterweight 12 may be reversed. That is, in FIG. 1 , the counterweight may correspond to reference sign 11, and the car may correspond to reference sign 12.
  • the direction in which the car 11 and the counterweight 12 serving as elevating bodies move vertically is defined as the vertical direction.
  • a car-side pulley 11a is provided at the top of the car 11.
  • a weight-side pulley 12a is provided at the top of the counterweight 12.
  • the main rope 10 is wrapped around the car-side pulley 11a and the weight-side pulley 12a.
  • the main rope 10 is also wrapped around the sheave of the hoisting machine 9 installed in the machine room unit 3 to be described later.
  • the main rope 10 is wound around a rope reel 15 provided in the machine room unit 3 to be described later, and is drawn from the rope reel 15. Furthermore, the end of the main rope 10 on the opposite side from the rope reel 15 is fixed to a rope-fixing portion 14 in the machine room unit 3. Furthermore, the main rope 10 is wrapped from the rope reel 15, through a pulley 19 to be described later, to the weight-side pulley 12a, the hoisting machine 9, and the car-side pulley 11a in this order, and the end of the main rope 10 is fixed to the rope-fixing portion 14. Then, when the hoisting machine 9 is driven, the car 11 and the counterweight 12 move vertically in the hoistway 100.
  • the support member 2 is installed on a beam 101a provided at the uppermost portion of the hoistway 100 or a recess provided in the wall surface of the hoistway 100.
  • the lifting device 6 is provided to the support member 2.
  • the machine room unit 3 is disposed below support member 2 in the vertical direction. Furthermore, the machine room unit 3 is suspended from the support member 2 with the lifting device 6 therebetween.
  • the machine room unit 3 is supported by the lifting device 6 so as to be liftable (movable).
  • the lifting device 6 may be provided in a first machine room 4 and a second machine room 5 of the machine room unit 3 to be described later, and the lifting rope of the lifting device 6 may be provided in the support member 2.
  • the machine room unit 3 has the first machine room 4 and the second machine room 5.
  • the first machine room 4 is disposed below the second machine room 5 in the vertical direction.
  • the first machine room 4 and the second machine room 5 are separably coupled, and are each independently lifted by the lifting device 6.
  • a movable support mechanism 7 is provided at the bottom of the first machine room 4 in the vertical direction.
  • the movable support mechanism 7 is configured so as to be stretchable from the first machine room 4 toward the wall surface of the hoistway 100. Furthermore, the movable support mechanism 7 is placed on beams 101b, 101c, and 101d provided in the hoistway 100 or a recess provided in the wall surface of the hoistway 100.
  • the movable support mechanism 7 supports the machine room unit 3 or the first machine room 4 at a predetermined position in the hoistway 100.
  • the movable support mechanism 7 is not limited to the above-described one, and various other fixing mechanisms, such as an engaging member that engages with a guide rail for supporting the car 11 in a vertically movable manner or the wall surface of the hoistway 100, and a fastening member that is fastened to the wall surface, may be applied.
  • the first machine room 4 has an upper machine room 4a and a lower machine room 4b.
  • the upper machine room 4a is installed at the top of the lower machine room 4b in the vertical direction.
  • the second machine room 5 is installed at the top of the upper machine room 4a in the vertical direction.
  • the hoisting machine 9 is installed in the lower machine room 4b.
  • the rope-fixing portion 14 for fixing the end of the main rope 10 is installed in the lower machine room 4b.
  • the configuration in which the first machine room 4 is divided into two, the upper machine room 4a and the lower machine room 4b has been described.
  • the first machine room 4 may be a single machine room or may be divided into three or more machine rooms.
  • the second machine room 5 is described as a single machine room, but may be divided into two or more machine rooms similarly to the first machine room 4.
  • the rope reel 15 around which the main rope 10 is wound, a first rope gripper 16, a second rope gripper 17, and a deflector 22 are installed.
  • the main rope 10 for extension is wound around the rope reel 15. Then, when raising the machine room unit 3, the main rope 10 for extension is drawn from the rope reel 15.
  • the rope reel 15 is installed in the machine room unit 3, but the present invention is not limited thereto, and the rope reel 15 may be installed in a pit 100b, which is the bottom of the hoistway 100, or outside the hoistway 100.
  • the deflector 22 is disposed near the rope reel 15.
  • the deflector 22 changes the direction of the main rope 10 drawn from the rope reel 15 to the direction toward the second machine room 5.
  • the first rope gripper 16 is provided near the deflector 22 and the rope reel 15.
  • the first rope gripper 16 releasably grips the main rope 10, the direction of which has been changed by the deflector 22.
  • the first rope gripper 16 grips the main rope 10 on the rope reel side (hereinafter, simply referred to as the "first side") A of the pulley 19 to be described later in the main rope 10.
  • the first rope gripper 16 grips the main rope 10, thereby restricting the movement of the main rope 10.
  • the first rope gripper 16 may be provided to the rope reel 15 or the deflector 22.
  • the second rope gripper 17 is disposed on the main rope 10 on the elevating body side, that is, the counterweight 12 and car 11 side (hereinafter, simply referred to as the "second side") B, of the pulley 19 to be described later.
  • the second rope gripper 17 has a grip portion 17a and a rope drum 17b.
  • the grip portion 17a releasably grips the main rope 10.
  • the grip portion 17a grips the main rope 10, thereby restricting the movement of the main rope 10.
  • the rope drum 17b is disposed above the grip portion 17a in the vertical direction. Furthermore, the rope drum 17b is disposed closer to the pulley 19 than the grip portion 17a. Therefore, the grip portion 17a is disposed closer to the elevating body side than the rope drum 17b, that is, closer to the counterweight 12 and car 11 side.
  • the rope drum 17b is supported in such a manner that the rotation thereof can be locked and released.
  • the rope drum 17b is wrapped with N or more turns (N is 1 or more) of the main rope 10. When the rotation of the rope drum 17b is locked, frictional force is generated between the rope drum 17b and the main rope 10.
  • the first machine room 4 has the two-story structure of the upper machine room 4a and the lower machine room 4b, so that the horizontal space in the hoistway 100 can be reduced.
  • the first machine room 4 is not limited to the two-story structure of the upper machine room 4a and the lower machine room 4b, but may have a single-story structure in which the hoisting machine 9, the rope-fixing portion 14, the rope reel 15, the first rope gripper 16, and the second rope gripper 17 are installed in a single machine room.
  • the second machine room 5 is separably coupled to the top of the upper machine room 4a in the first machine room 4.
  • a control panel 8 that controls the hoisting machine 9, the car 11, and the like, the pulley 19, and a third rope gripper 18 are installed.
  • the control panel 8 and the car 11 are electrically connected through a tail cord 13.
  • a tail cord reel 20 is installed near the control panel 8.
  • the tail cord 13 for extension is wound around the tail cord reel 20. Then, when raising the second machine room 5, the tail cord 13 is drawn from the tail cord reel 20.
  • the pulley 19 is rotatably supported in the second machine room 5.
  • the pulley 19 is disposed between the rope reel 15, and the car 11 and counterweight 12 that represent the elevating bodies.
  • the main rope 10 drawn from the rope reel 15 is wrapped around the pulley 19. Furthermore, the pulley 19 changes the direction in which the main rope 10 extends from up to down.
  • the third rope gripper 18 is disposed near the pulley 19.
  • the third rope gripper 18 is disposed on the main rope 10 on the second side B of the pulley 19.
  • the third rope gripper 18 is disposed closer to the pulley 19 than the rope drum 17b of the second rope gripper 17.
  • the third rope gripper 18 releasably grips the main rope 10.
  • the third rope gripper 18 operates to grip the main rope 10, and the first rope gripper 16 and the grip portion 17a of the second rope gripper 17 are released. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the third rope gripper 18.
  • the rope drum 17b of the second rope gripper 17 is non-rotatably fixed.
  • the frictional force generated between the rope drum 17b and the main rope 10 can reduce the load applied to the third rope gripper 18.
  • the force (gripping force) with which the third rope gripper 18 grips the main rope 10 can be reduced, and damage to the main rope 10 due to the gripping of the third rope gripper 18 can be suppressed.
  • the gripping force of the third rope gripper 18 can be reduced.
  • the third rope gripper 18 grips the main rope 10 to fix the other end of the main rope 10, but the present invention is not limited thereto.
  • the third rope gripper 18 may be released, the main rope 10 may be gripped by the first rope gripper 16, and the other end of the main rope 10 may be fixed by the first rope gripper 16.
  • the other end of the main rope 10 is fixed by gripping the main rope 10 between the rope drum 17b of the second rope gripper 17 and the rope reel 15. Therefore, the other end of the main rope 10 may be fixed at the rope reel 15.
  • FIGS. 2 to 4 are explanatory diagrams illustrating a method for extending the main rope 10.
  • the car 11 and the first machine room 4 are coupled by a chain 201, and the car 11 is fixed.
  • the counterweight 12 is lowered to the pit 100b, and the counterweight 12 is placed on a buffer (not illustrated) installed in the pit 100b.
  • tension from the car 11 and the counterweight 12 is not applied to the main rope 10.
  • the main rope 10 is gripped by the grip portion 17a of the second rope gripper 17, and the gripping of the main rope 10 by the third rope gripper 18 is released. Note that if the first rope gripper 16 is gripping the main rope 10, the gripping of the main rope 10 by the first rope gripper 16 is released. Then the first machine room 4 and the second machine room 5 are divided.
  • the lifting device 6 coupled to the second machine room 5 is operated to raise only the second machine room 5 to a predetermined height (the beam 101b in the example illustrated in FIG. 2 ).
  • a predetermined height the beam 101b in the example illustrated in FIG. 2 .
  • the length (height) for raising the second machine room 5 only needs to be about half the length of the extension of the main rope 10.
  • the pulley 19 provided in the second machine room 5 also rises.
  • the lifting device 6 is stopped, and the second machine room 5 and the pulley 19 are temporarily fixed using the lifting device 6, a second machine room support mechanism (not illustrated), or the like.
  • one end of the main rope 10 is fixed by the grip portion 17a of the second rope gripper 17, but the other end of the main rope 10, that is, the rope reel 15 side, is not fixed. Therefore, as the second machine room 5 and the pulley 19 rise, the main rope 10 on the rope reel 15 side is pulled, and the main rope 10 for extension is drawn from the rope reel 15. Thus, the raising operation of the second machine room 5 and the pulley 19 and the operation of drawing out the main rope 10 from the rope reel 15 can be performed simultaneously.
  • the main rope 10 is gripped by the first rope gripper 16, and the gripping of the main rope 10 by the grip portion 17a of the second rope gripper 17 is released.
  • the fixing of the rope drum 17b of the second rope gripper 17 is released, thereby allowing the rope drum 17b to rotate. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the first rope gripper 16.
  • the movable support mechanism 7 is retracted to release the support of the first machine room 4 by the movable support mechanism 7. Then the lifting device 6 coupled to the first machine room 4 is operated to raise the first machine room 4 to a predetermined height (the beam 101c in the example illustrated in FIGS. 3 and 4 ). Thus, the main rope 10 for extension drawn from the rope reel 15 in the operation illustrated in FIG. 2 is sent out toward the counterweight 12 and car 11 side through the pulley 19 and the second rope gripper 17.
  • the lifting device 6 When the first machine room 4 rises to the predetermined height, the lifting device 6 is stopped. Then, as illustrated in FIG. 4 , the movable support mechanism 7 is extended to place the movable support mechanism 7 on the beam 101c. In addition, the first machine room 4 and the second machine room 5 are coupled. Thus, the machine room unit 3, which is composed of the first machine room 4 and the second machine room 5, can be raised to the predetermined height.
  • the rotation of the rope drum 17b of the second rope gripper 17 is locked, and the main rope 10 is gripped by the third rope gripper 18.
  • the main rope 10 is first gripped by the grip portion 17a of the second rope gripper 17.
  • the weight of the main rope 10 is not applied to the rope drum 17b of the second rope gripper 17, so that the rope drum 17b can be easily rotated, and the work of adjusting the phase of the rope drum 17b can be easily performed.
  • the work of adjusting the phase of the rope drum 17b is completed, the rotation of the rope drum 17b is locked.
  • the main rope 10 is gripped by the third rope gripper 18. Thereafter, the gripping of the main rope 10 by the grip portion 17a of the second rope gripper 17 is released. As described above, the main rope 10 is once gripped by the grip portion 17a of the second rope gripper 17, whereby it is possible to prevent the counterweight 12 from falling or the main rope 10 from falling under its own weight.
  • the main rope 10 can be extended without sliding the main rope 10 on the rope grippers 16 and 18 and the grip portion 17a.
  • wear of the main rope 10 can be prevented, and the gripping force of the rope grippers 16 and 18 and the grip portion 17a can be easily adjusted.
  • the machine room unit 3 is divided into the first machine room 4 and the second machine room 5, each of which is independently lifted.
  • the weight applied to the lifting device 6 can be reduced, and the lifting device 6 can be prevented from increasing in size.
  • FIG. 5 is a schematic configuration diagram illustrating the construction elevator according to the second embodiment
  • FIGS. 6 and 7 illustrate a method for extending the main rope of the construction elevator according to the second embodiment.
  • the construction elevator according to the second embodiment is different from the construction elevator 1 according to the first embodiment in the configuration of the machine room unit. Therefore, here, the same reference signs are given to portions common to the construction elevator 1 according to the first embodiment, and redundant description will be omitted.
  • a construction elevator 1B has a machine room unit 3B composed of a first machine room 4B and a second machine room 5B.
  • the hoisting machine 9 the rope-fixing portion 14 for fixing the end of the main rope 10, the rope reel 15, the first rope gripper 16, and a second rope gripper 27 are installed.
  • the control panel 8, the tail cord reel 20, and the pulley 19 are installed.
  • the second machine room 5B is disposed above the first machine room 4B in the vertical direction. Furthermore, similarly to the first machine room 4B, a movable support mechanism 21 is provided in the second machine room 5B.
  • the movable support mechanism 21 is configured so as to be stretchable from the second machine room 5B toward the wall surface of the hoistway 100. Furthermore, the movable support mechanism 21 is placed on the beams 101b, 101c, and 101d provided in the hoistway 100 or a recess provided in the wall surface of the hoistway 100.
  • the movable support mechanism 21 supports the machine room unit 3 or the second machine room 5B at a predetermined position in the hoistway 100.
  • the third rope gripper 18 is not provided in the second machine room 5B according to the second embodiment.
  • the second rope gripper 27 has a lower grip portion 27a, a rope drum 27b, and an upper grip portion 27c. Since the configurations of the lower grip portion 27a and the rope drum 27b are similar to those of the grip portion 17a and the rope drum 17b of the second rope gripper 17 according to the first embodiment, the description thereof will be omitted.
  • the upper grip portion 27c is disposed above the rope drum 27b in the vertical direction. That is, the upper grip portion 27c is disposed closer to the pulley 19 than the rope drum 27b. Similarly to the first rope gripper 16 and the lower grip portion 27a, the upper grip portion 27c releasably grips the main rope 10.
  • the upper grip portion 27c has similar operation and effect to the third rope gripper 18 according to the first embodiment.
  • the upper grip portion 27c of the second rope gripper 27 operates to grip the main rope 10, and the first rope gripper 16 and the lower grip portion 27a of the second rope gripper 27 are released. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the upper grip portion 27c of the second rope gripper 27.
  • the upper grip portion 27c of the second rope gripper 27 may be released, the main rope 10 may be gripped by the first rope gripper 16, and the other end of the main rope 10 may be fixed by the first rope gripper 16.
  • the car 11 and the first machine room 4 are coupled by the chain 201, and the car 11 is fixed.
  • the counterweight 12 is lowered to the pit 100b, and the counterweight 12 is placed on a buffer (not illustrated) installed in the pit 100b.
  • the movable support mechanism 21 is retracted to release the support of the second machine room 5B by the movable support mechanism 21.
  • the lifting device 6 coupled to the second machine room 5B is operated to raise only the second machine room 5B to a predetermined height (the beam 101b in the example illustrated in FIG. 2 ) .
  • the pulley 19 provided in the second machine room 5B also rises.
  • the hoisting machine 9 can be driven to use the car 11. That is, the construction elevator 1B can be moved even during the work of extending the main rope 10, thereby allowing an improvement in the work of installing the construction elevator 1B and building structure construction work.
  • the other end of the main rope 10 may be fixed by the lower grip portion 27a of the second rope gripper 27 provided in the first machine room 4B. Also in this case, the main rope 10 is not drawn vertically downward from the first machine room 4B.
  • the main rope 10 is gripped by the first rope gripper 16, and the gripping of the main rope 10 by the upper grip portion 27c of the second rope gripper 27 is released.
  • the fixing of the rope drum 27b of the second rope gripper 27 is released, thereby allowing, the rope drum 27b to rotate. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the first rope gripper 16.
  • the movable support mechanism 7 is retracted to release the support of the first machine room 4B by the movable support mechanism 7. Then the lifting device 6 coupled to the first machine room 4B is operated to raise the first machine room 4B to a predetermined height (the beam 101c in the example illustrated in FIG. 7 ). Then, when the first machine room 4B is raised to the predetermined height, the lifting device 6 is stopped, and the movable support mechanism 7 is extended to place the movable support mechanism 7 on the beam 101c. Thus, the first machine room 4B and the second machine room 5B can be raised to the predetermined height.
  • a predetermined height the beam 101c in the example illustrated in FIG. 7
  • the rotation of the rope drum 27b of the second rope gripper 27 is locked, and the main rope 10 is gripped by the upper grip portion 27c.
  • the main rope 10 is first gripped by the lower grip portion 27a of the second rope gripper 27. Then the phase of the rope drum 27b is adjusted, and the rotation of the rope drum 27b is locked.
  • the main rope 10 is gripped by the upper grip portion 27c. Thereafter, the gripping of the main rope 10 by the lower grip portion 27a is released.
  • the other configurations are similar to those of the construction elevator 1 according to the first embodiment, and thus the description thereof will be omitted.
  • the construction elevator 1B according to the second embodiment can also provide similar operational effects to those of the construction elevator 1 according to the first embodiment described above.
  • FIG. 8 is a schematic configuration diagram illustrating the construction elevator according to the third embodiment
  • FIGS. 9 and 10 illustrate a method for extending the main rope of the construction elevator according to the third embodiment.
  • the construction elevator according to the third embodiment is different from the construction elevator 1 according to the first embodiment in the configuration of the machine room unit. Therefore, here, the same reference signs are given to portions common to the construction elevator 1 according to the first embodiment, and redundant description will be omitted.
  • a construction elevator 1C has a machine room unit 3C composed of a first machine room 4C and a second machine room 5C, and a pulley 19C.
  • the first machine room 4C and the second machine room 5C are integrally formed.
  • the hoisting machine 9 the rope-fixing portion 14 for fixing the end of the main rope 10, the rope reel 15, the first rope gripper 16, and the second rope gripper 17 are installed.
  • the control panel 8, the tail cord reel 20, and the third rope gripper 18 are installed.
  • the pulley 19C is supported by a pulley lifting device 6C so as to be liftable (movable) along the vertical direction. That is, the pulley 19C is moved independently from the machine room unit 3C by the pulley lifting device 6C.
  • the pulley 19C is rotatably supported, and the main rope 10 is wrapped therearound.
  • the first rope gripper 16 is disposed on the main rope 10 on the rope reel 15 side, that is, the first side A, of the pulley 19C.
  • the second rope gripper 17 and the third rope gripper 18 are arranged on the main rope on the counterweight 12 and car 11 side, that is, the second side B, of the pulley 19C.
  • the third rope gripper 18 operates to grip the main rope 10, and the first rope gripper 16 and the grip portion 17a of the second rope gripper 17 are released. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the third rope gripper 18. In addition, since the rope drum 17b of the second rope gripper 17 is non-rotatably fixed, the load applied to the third rope gripper 18 can be reduced.
  • the third rope gripper 18 may be released, the main rope 10 may be gripped by the first rope gripper 16, and the other end of the main rope 10 may be fixed by the first rope gripper 16.
  • the car 11 and the machine room unit 3C are coupled by the chain 201, and the car 11 is fixed.
  • the counterweight 12 is lowered to the pit 100b, and the counterweight 12 is placed on a buffer (not illustrated) installed in the pit 100b.
  • the pulley lifting device 6C coupled to the pulley 19C is driven to raise only the pulley 19C to a predetermined height.
  • the main rope 10 on the second side B of the pulley 19C is fixed by the third rope gripper 18. Therefore, the main rope 10 can be drawn from the rope reel 15 by raising the pulley 19C.
  • the length (height) for raising the pulley 19C only needs to be about half the length of the extension of the main rope 10.
  • the present invention is not limited to this.
  • the third rope gripper 18 may be released, and the main rope 10 may be fixed by the grip portion 17a of the second rope gripper 17.
  • the pulley 19C is raised to the predetermined height, the lifting device 6 is stopped and the pulley 19C is temporarily fixed in the hoistway 100.
  • the car 11 and the machine room unit 3C are coupled and the counterweight 12 is placed on the buffer, but the present invention is not limited thereto.
  • one end of the main rope 10 on the second side B during the raising operation of the pulley 19C is fixed to the rope-fixing portion 14, and the other end thereof on the second side B is fixed to the third rope gripper 18. Therefore, even during the movement of the pulley 19C, it is not necessary to couple the car 11 to the machine room unit 3C and place the counterweight 12 on the buffer. Furthermore, even during the movement of the pulley 19C, the hoisting machine 9 may be driven to use the car 11.
  • the main rope 10 is gripped by the first rope gripper 16, and the gripping of the main rope 10 by the third rope gripper 18 is released.
  • the fixing of the rope drum 17b of the second rope gripper 17 is released, thereby allowing the rope drum 17b to rotate. Therefore, one end of the main rope 10 is fixed to the rope-fixing portion 14, and the other end of the main rope 10 is fixed to the first rope gripper 16.
  • the movable support mechanism 7 is retracted to release the support of the machine room unit 3C by the movable support mechanism 7. Then the lifting device 6 coupled to the machine room unit 3C is operated to raise the machine room unit 3C to a predetermined height. Then, when the machine room unit 3C is raised to the predetermined height, the lifting device 6 is stopped, and the movable support mechanism 7 is extended to place the movable support mechanism 7 on the beam 101c. Thus, the machine room unit 3C can be raised to the predetermined height.
  • the rotation of the rope drum 17b of the second rope gripper 17 is locked, and the main rope 10 is gripped by the third rope gripper 18.
  • the main rope 10 is first gripped by the grip portion 17a of the second rope gripper 17. Then the phase of the rope drum 17b is adjusted, and the rotation of the rope drum 17b is locked.
  • the main rope 10 is gripped by the third rope gripper 18. Thereafter, the gripping of the main rope 10 by the grip portion 17a of the second rope gripper 17 is released.
  • the other configurations are similar to those of the construction elevator 1 according to the first embodiment, and thus the description thereof will be omitted.
  • the construction elevator 1C according to the third embodiment can also provide similar operational effects to those of the construction elevator 1 according to the first embodiment described above.
  • the pulley 19 rises together with the second machine room 5, 5B, so that the main rope 10 is drawn from the rope reel 15. That is, in the construction elevator 1 according to the first embodiment and the construction elevator 1B according to the second embodiment, the lifting device 6 for lifting the machine room unit 3, 3B serves as a pulley lifting device. Meanwhile, in the construction elevator 1C according to the third embodiment, only the pulley 19C rises independently of the machine room unit 3C, so that the main rope 10 is drawn from the rope reel 15.
  • FIG. 11 is a schematic configuration diagram illustrating the construction elevator according to the fourth embodiment.
  • the construction elevator according to the fourth embodiment is different from the construction elevators according to the first and third embodiments in the order in which the main rope is looped over the car and the counterweight. Therefore, here, the same reference signs are given to portions common to the construction elevators 1 and 1C according to the first and third embodiments, and redundant description will be omitted.
  • a construction elevator 1D has a machine room unit 3D, the car 11, and the counterweight 12.
  • the rope reel 15 around which the main rope 10 is wound, the hoisting machine 9, and the like are arranged in the machine room unit 3D.
  • the main rope 10 is wrapped from the rope reel 15, through the pulley 19, to the car-side pulley 11a provided on the car 11, the hoisting machine 9, and the weight-side pulley 12a provided on the counterweight 12, in this order. Furthermore, one end of the main rope 10 extending from the weight-side pulley 12a is fixed to the rope-fixing portion 14 of the machine room unit 3D.
  • the other configurations are similar to those of the construction elevators 1 and 1C according to the first and third embodiments, and thus the description thereof will be omitted.
  • the construction elevator 1D according to the fourth embodiment can also provide similar operational effects to those of the construction elevators 1 and 1C according to the first and third embodiments described above.
  • FIG. 12 is a schematic configuration diagram illustrating the construction elevator according to the fifth embodiment.
  • the construction elevator according to the fifth embodiment is different from the construction elevator according to the second embodiment in the order in which the main rope is looped over the car and the counterweight. Therefore, here, the same reference signs are given to portions common to the construction elevator 1B according to the second embodiment, and redundant description will be omitted.
  • a construction elevator 1E has a machine room unit 3E, the car 11, and the counterweight 12.
  • the rope reel 15 around which the main rope 10 is wound, the hoisting machine 9, and the like are arranged in the machine room unit 3E.
  • the main rope 10 is wound from the rope reel 15, through the pulley 19, to the car-side pulley 11a provided on the car 11, the hoisting machine 9, and the weight-side pulley 12a provided on the counterweight 12, in this order. Furthermore, .one end of the main rope 10 extending from the weight-side pulley 12a is fixed to the rope-fixing portion 14 of the machine room unit 3E.
  • the other configurations are similar to those of the construction elevator 1B according to the second embodiment, and thus the description thereof will be omitted.
  • the construction elevator 1E according to the fifth embodiment can also provide similar operational effects to as the construction elevator 1B according to the second embodiment described above.

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Types And Forms Of Lifts (AREA)
EP20958614.8A 2020-10-20 2020-10-20 Bauaufzug und verfahren zur verlängerung des hauptseils eines bauaufzugs Pending EP4234471A4 (de)

Applications Claiming Priority (1)

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PCT/JP2020/039315 WO2022085061A1 (ja) 2020-10-20 2020-10-20 工事用エレベーター及び工事用エレベーターの主ロープの延長方法

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EP4617219A1 (de) * 2024-03-15 2025-09-17 KONE Corporation Verfahren zur installation von seilen eines aufzugs und anordnung dafür

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JP7756264B2 (ja) * 2022-09-08 2025-10-17 株式会社日立製作所 工事用エレベーター

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JPS5651995B2 (de) * 1974-05-31 1981-12-09
JPH08133634A (ja) * 1994-11-04 1996-05-28 Otis Elevator Co ジャンプアップエレベーターのジャンプ方法
FI108431B (fi) * 1999-02-24 2002-01-31 Kone Corp Hissijõrjestelmõ
JP3920527B2 (ja) * 2000-04-04 2007-05-30 株式会社日立ビルシステム 工事用エレベータ
JP4491110B2 (ja) * 2000-04-19 2010-06-30 オーチス エレベータ カンパニー エレベータのロープ掛け工法
FI122066B (fi) * 2009-12-31 2011-08-15 Kone Corp Menetelmä hissin valmistamisessa
JP2012148882A (ja) * 2011-01-21 2012-08-09 Mitsubishi Electric Corp エレベータのブレーキ装置
FI20125045A7 (fi) * 2012-01-16 2013-07-17 Kone Corp Menetelmä ja hissijärjestely
DE102012111778A1 (de) * 2012-12-04 2014-06-05 Thyssenkrupp Elevator Ag Seilklemme und Aufzuganlage mit Seilklemme
CN103538985B (zh) * 2013-10-29 2016-02-24 江南嘉捷电梯股份有限公司 一种电梯紧急救援装置
WO2020044444A1 (ja) * 2018-08-28 2020-03-05 三菱電機株式会社 揚程延長式工事用エレベーター

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4617219A1 (de) * 2024-03-15 2025-09-17 KONE Corporation Verfahren zur installation von seilen eines aufzugs und anordnung dafür

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JP7455221B2 (ja) 2024-03-25
CN116323461A (zh) 2023-06-23
JPWO2022085061A1 (de) 2022-04-28
CN116323461B (zh) 2024-11-22
WO2022085061A1 (ja) 2022-04-28
EP4234471A4 (de) 2024-07-31

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