EP4249415A1 - Guide rail support structure and elevator - Google Patents

Guide rail support structure and elevator Download PDF

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Publication number
EP4249415A1
EP4249415A1 EP20962463.4A EP20962463A EP4249415A1 EP 4249415 A1 EP4249415 A1 EP 4249415A1 EP 20962463 A EP20962463 A EP 20962463A EP 4249415 A1 EP4249415 A1 EP 4249415A1
Authority
EP
European Patent Office
Prior art keywords
support structure
guide rail
fixing bracket
rail
fixing
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
EP20962463.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Tomoyasu Watanabe
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 EP4249415A1 publication Critical patent/EP4249415A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B66B7/023—Mounting means therefor
    • B66B7/024—Lateral supports

Definitions

  • the present invention relates to a support structure for a guide rail of an elevator, and the elevator.
  • a guide rail configured to movably support a car or a counterweight is installed inside a hoistway of an elevator.
  • the guide rail is supported by a support structure installed in the hoistway of a building structure.
  • the support structure has a rail clip configured to hold the guide rail, and a fixing bracket fixed to a wall surface of the hoistway.
  • a high-rise building structure contracts due to a weight of the building structure itself.
  • a holding force of the rail clip holding the guide rail is set to be strong, the guide rail is pulled through the rail clip of the support structure due to contraction of the building structure, and a compressive stress acts on the guide rail.
  • PTL 1 describes a technique.in which a guide rail is held by two or more types of rail clips having different holding forces.
  • an object of the present invention is to provide a support structure for a guide rail of an elevator and the elevator capable of easily performing installation work of the guide rail without increasing a number of types of rail clips to be used.
  • a support structure for a guide rail includes a rail clip having elasticity, and a fixing bracket.
  • the rail clip holds a flange portion of the guide rail erected inside a hoistway.
  • To the fixing bracket is fixed the rail clip, and the fixing bracket is disposed on a back surface of the flange portion.
  • a step portion configured to adjust an amount of flexure of the rail clip is provided between the rail clip and the fixing bracket or between the fixing bracket and the flange portion.
  • an elevator includes a guide rail erected inside a hoistway, and a support structure configured to support the guide rail. As the support structure, the support structure described above is applied.
  • the installation work of the guide rail can be easily performed without increasing the number of the types of the rail clips to be used.
  • FIGS. 1 to 15 a support structure for a guide rail and an elevator according to embodiments will be described with reference to FIGS. 1 to 15 .
  • the same members are denoted by the same reference signs.
  • FIGS. 1 and 2 an elevator provided with a support structure for a guide rail according to a first embodiment (hereinafter, referred to as "the present embodiment") will be described with reference to FIGS. 1 and 2 .
  • FIG. 1 is a schematic configuration view illustrating the elevator.
  • FIG. 2 is a plan view diagram illustrating the elevator.
  • an elevator 1 of the present embodiment is provided inside a hoistway 101 formed inside a building structure 100.
  • the elevator 1 includes a car 10 configured to move up and down inside the hoistway 101 and load a person or a cargo, a hoisting machine 11, a control panel 12, a main rope 13, a compensation pulley 14, and a counterweight 15.
  • the elevator 1 includes car-side guide rails 20 configured to movably support the car 10 and weight-side guide rails 30 configured to movably support the counterweight 15.
  • a machine chamber 102 is provided at a top of the hoistway 101.
  • the hoisting machine 11 is disposed in the machine chamber 102 and raises and lowers the car 10 by winding the main rope 13.
  • the control panel 12 configured to control the entire elevator 1 is installed.
  • the main rope 13 is connected to the car 10 and the counterweight 15.
  • the car 10 is connected to the counterweight 15 through the main rope 13 .
  • the car 10 is provided with sliders 16 configured to slide on the car-side guide rails 20.
  • a direction in which the car 10 and the counterweight 15 move up and down is defined as an up-down direction.
  • the up-down direction is parallel to a vertical direction.
  • the car 10 and the counterweight 15 are connected by a compensation rope 17.
  • the compensation rope 17 is wound around the compensation pulley 14. disposed at a lowermost portion of the hoistway 101.
  • the compensation pulley 14 is rotatably disposed at the lowermost portion of the hoistway 101.
  • the car-side guide rails 20 are supported by support structures 50 and are erected inside the hoistway 101.
  • the weight-side guide rails 30 are also supported by support structures 50 and are erected inside the hoistway 101.
  • the support structures 50 are fixed to wall surfaces 103 of the hoistway 101, and the plurality of support structures are provided along the up-down direction of the hoistway 101. Since the support structures 50 supporting the car-side guide rails 20 and the support structures 50 supporting the weight-side guide rails 30 have the same configuration, each of the support structures 50 supporting the car-side guide rails 20 will be described below.
  • the car-side guide rails 20 and the weight-side guide rails 30 are simply referred to as a guide rail 20.
  • FIG. 3 is a cross-sectional view illustrating the support structure 50 of the present embodiment
  • FIG. 4 is a cross-sectional view illustrating a conventional support structure 50A.
  • the guide rail 20 has a sliding surface portion 21 on which the slider 16 (see FIG. 1 ) slides, and a flange portion 22.
  • the flange portion 22 faces a fixing bracket 51 of the support structure 50 described later.
  • the sliding surface portion 21 protrudes substantially vertically from the flange portion 22.
  • the support structure 50 has the fixing bracket 51 fixed to the wall surface 103 of the hoistway 101, two rail clips 52, 52, two fixing bolts 54, 54, and two fixing nuts 55, 55.
  • the rail clip 52 is configured of a member having a predetermined elastic force.
  • the rail clip 52 is fastened and fixed to the fixing bracket 51 through a fixing bolt 54 and the fixing nut 55.
  • the rail clip 52 holds each of both ends of the flange portion 22 of the guide rail 20.
  • FIG. 5 is a plan view illustrating the fixing bracket 51
  • FIG. 6 is a front view illustrating the fixing bracket 51.
  • the fixing bracket 51 is formed in a substantially L shape.
  • the fixing bracket 51 has a fixed surface portion 51a, a facing surface portion 51b, and a step portion 53.
  • the fixed surface portion 51a is fixed to a fixing portion protruding from the wall surface 103 of the hoistway 101 by welding or fastening and fixing with a fixing bolt.
  • the facing surface portion 51b is substantially vertically continuous from one end portion of the fixed surface portion 51a in a short direction.
  • the facing surface portion 51b is formed in a substantially flat plate shape having a substantially rectangular shape.
  • Fixing holes 51c are formed at both end portions in a longitudinal direction of the facing surface portion 51b.
  • a fixing bolt 54 for fixing the rail clip 52 is inserted into each of the fixing holes 51c.
  • the facing surface portion 51b is disposed so as to face a back surface of the flange portion 22 on an opposite side of one surface from which the sliding surface portion 21 protrudes.
  • the step portion 53 is formed on the facing surface portion 51b.
  • the step portion 53 is formed between the two fixing holes 51c, 51c.
  • the step portion 53 protrudes toward the flange portion 22 from one surface of the facing surface portion 51b, which faces the flange portion 22 of the guide rail 20.
  • the step portion 53 is a substantially rectangular protruding portion having a flat surface.
  • the step portion 53 is interposed between the flange portion 22 of the guide rail 20, and the facing surface portion 51b, and is in surface contact with the back surface of the flange portion 22.
  • FIGS. 4 , 7, and 8 illustrate the conventional support structure 50A.
  • the conventional support structure 50A has a fixing bracket 51A, two rail clips 52, 52, two fixing bolts 54, 54, and two fixing nuts 55, 55. Since the rail clip 52, the fixing bolt 54, and the fixing nut 55 are the same as those of the support structure 50 of the present embodiment illustrated in FIG. 3 , description thereof will be omitted.
  • the fixing bracket 51A is formed in a substantially L shape, and includes a fixed surface portion 51a and a facing surface portion 51b.
  • the facing surface portion 51b is substantially vertically continuous from one end portion of the fixed surface portion 51a.
  • Two fixing holes 51c in which the fixing bolts 54 are inserted are formed in the facing surface portion 51b.
  • the back surface of the flange portion 22 of the guide rail 20 comes into surface contact with the facing surface portion 51b of the fixing bracket 51A.
  • the guide rail 20 is disposed in a direction away from the facing surface portion 51b with respect to the conventional support structure 50A illustrated in FIG. 4 due to the step portion 53 provided in the fixing bracket 51. Therefore, the rail clip 52 of the support structure 50 of the present embodiment is flexed more than the rail clip 52 of the conventional support structure 50A. As a result, according to the support structure 50 of the present embodiment, the holding force of the guide rail 20 by the rail clip 52 can be enhanced as compared with the conventional support structure 50A.
  • a height of the step portion 53 is designed in advance so that the holding force of the rail clip 52 becomes an optimum holding force required. This allows only one type of rail clip 52 to be used when the elevator 1 is installed. As a result, the installation work of the guide rail 20 can be easily performed, and workability can be improved.
  • the same type of rail clips 52 can be used for elevators installed in different building structures 100 having the same type of guide rails 20. In this way, it is possible to share the rail clip 52, and it is not necessary to design the rail clip 52 for each elevator.
  • the support structures 50 of the present embodiment illustrated in FIG. 3 may be applied to some of the plurality of support structures, and the remaining support structures may be the conventional support structures 50A illustrated in FIG. 4 .
  • a number of the support structures to which the support structures 50 of the present embodiment are applied is appropriately set according to a weight of the guide rail 20.
  • FIG. 9 is a cross-sectional view illustrating the support structure
  • FIG. 10 is a plan view illustrating a fixing bracket in the support structure
  • FIG. 11 is a front view illustrating the fixing bracket in the support structure.
  • a support structure 50B according to the second embodiment is different from the support structure 50 according to the first embodiment in a configuration of the fixing bracket. Therefore, the fixing bracket will be described here, and the same reference sings will be given to portions common to the support structure 50 according to the first embodiment, and redundant description will be omitted.
  • the support structure 50B has a fixing bracket 51B, two rail clips 52, 52, two fixing bolts 54, 54, and two fixing nuts 55, 55.
  • the fixing bracket 51B has a fixed surface portion 51a, a facing surface portion 51b, and two step portions 57, 57. Two fixing holes 51c are formed in the facing surface portion 51b.
  • the step portion 57 is provided on one surface of the facing surface portion 51b, which faces the guide rail 20, at a position where the rail clip 52 is attached.
  • the step portion 57 is a protruding portion that protrudes in a substantially rectangular shape from one surface of the facing surface portion 51b toward the rail clip 52.
  • the two fixing holes 51c, 51c are formed in the facing surface portion 51b.
  • the fixing hole 51c is formed at a position where the step portion 57 is provided in the facing surface portion 51b, and penetrates the step portion 57 and the facing surface portion 51b.
  • the fixing bolt 54 is inserted into the fixing hole 51c.
  • the support structure 50B according to the second embodiment can also obtain similar operational effects to those of the support structure 50 according to the first embodiment described above.
  • the amount of flexure of the rail clip 52 can be adjusted for each elevator.
  • the holding force of the rail clip 52 can be made an optimum holding force, and an increase in the number of types of the rail clips 52 to be used can be prevented.
  • FIG. 12 is a cross-sectional view illustrating the support structure
  • FIG.13 is a front view illustrating a liner in the support structure
  • FIG.14 is a front view illustrating a fixing plate in the support structure
  • a support structure 60 according to the third embodiment is different from the support structure 50 according to the first embodiment in that the liner and the fixing plate are provided. Therefore, the same reference signs are given to portions common to the support structure 50 according to the first embodiment and the conventional support structure 50A, and redundant description will be omitted.
  • the support structure 60 has a fixing bracket 51A, two rail clips 52, 52, and two fixing bolts 54, 54. Since a configuration of the fixing bracket 51A is similar to that of the fixing bracket 51A of the conventional support structure 50A illustrated in FIG. 4 , description thereof will be omitted.
  • the support structure 60 has a liner 61 and a fixing plate 64.
  • the liner 61 is interposed between a facing surface portion 51b of the fixing bracket 51A, and the flange portion 22 of the guide rail 20 and the rail clip 52. As illustrated in FIG. 13 , the liner 61 is formed in a rectangular flat plate shape. Insertion ports 61a, 61a are formed at both end portions in a longitudinal direction of the liner 61. The insertion port 61a is a cutout continuous from one end portion to a center of the liner 61 in a short direction. When the liner 61 is disposed on the facing surface portion 51b, the fixing bolt 54 is inserted into the insertion port 61a.
  • the liner 61 is provided with a step portion 63.
  • the step portion 63 is formed between the two insertion ports 61a, 61a.
  • the step portion 63 protrudes toward the flange portion 22 from one surface of the liner 61 facing the flange portion 22 of the guide rail 20.
  • the step portion 63 is a substantially rectangular protruding portion.
  • the step portion 63 is interposed between the flange portion 22 of the guide rail 20 and the facing surface portion 51b, and is in surface contact with the back surface of the flange portion 22.
  • the guide rail 20 By inserting the liner 61 between the guide rail 20 and the fixing bracket 51A, the guide rail 20 can be separated from the facing surface portion 51b of the fixing bracket 51A, and the amount of flexure of the rail clip 52 can be increased.
  • the fixing plate 64 is disposed on a surface of the facing surface portion 51b on a side on an opposite side of the surface facing the guide rail 20. As illustrated in FIG. 14 , the fixing plate 64 is formed in a substantially flat plate.shape, and is formed longer than an interval between the two fixing bolts 54, 54 attached to the fixing bracket, 51A. Nuts 65 are fixed to both end portions of the fixing plate 64 in a longitudinal direction by welding. As a result, it is not necessary to manually support the nut 65 when tightening the fixing bolt 54, and workability is improved.
  • This fixing plate 64 may also be applied to the support structure 50 according to the first embodiment and the support structure 50B according to the second embodiment described above.
  • This support structure 60 according to the third embodiment can also obtain similar operational effects to those of the support structure 50 according, to the first embodiment described above.
  • the support structure 60 according to the third embodiment it is possible to form the step portion by sandwiching the liner 61 between the guide rail 20 and the fixing bracket 51A without processing the fixing bracket 51A, the guide rail 20, and the like.
  • the amount of flexure of the rail clip 52 can be adjusted even for an existing support structure for a guide rail, and the holding force of the rail clip 52 can be easily adjusted to an optimum holding force.
  • FIGS. 15A to 15C Next, a support structure for a guide rail according to a fourth embodiment will be described with reference to FIGS. 15A to 15C .
  • FIG. 15A is a plan view illustrating a fixing bracket in the support structure
  • FIG. 15B is a front view
  • FIG. 15C is a side view.
  • This support structure according to the fourth embodiment is different from the support structure 50 according to the first embodiment in a structure of a step portion of the fixing bracket. Therefore, the fixing bracket will be described here, and the same reference sings will be given to portions common to the support structure 50 according to the first embodiment, and redundant description will be omitted.
  • a fixing bracket 51C has a fixed surface portion 51a and a facing surface portion 51b.
  • the facing surface portion 51b is formed with a step portion 53 and two fixing holes 51c.
  • Chamfering 53a is provided at an upper end-side corner portion and a lower end-side corner portion of the step portion 53 in an up-down direction.
  • chamfering the corner portions of the step portion 53 may also be applied to the step portion 57 of the fixing bracket 51B according to the second embodiment described above and the step portion 63 of the liner 61 according to the third embodiment.
  • This support structure having the fixing bracket 51C according to the fourth embodiment can also obtain similar operational effects to those of the support structure 50 according to the first embodiment described above.
  • the present invention is not limited thereto, and the step portion may be provided on the surface of the flange portion 22 of the guide rail 20 facing the fixing bracket.
  • the step portion may be a recessed portion recessed from the facing surface portion of the fixing bracket or one surface of the liner.
  • the step portion is a protruding portion having a flat surface in surface contact with the flange portion 22 of the guide rail 20 or the rail clip 52
  • the present invention is not limited thereto.
  • the step portion may be formed in various shapes such as a protrusion and a ridge.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP20962463.4A 2020-11-20 2020-11-20 Guide rail support structure and elevator Pending EP4249415A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/043319 WO2022107300A1 (ja) 2020-11-20 2020-11-20 ガイドレールの支持構造及びエレベーター

Publications (1)

Publication Number Publication Date
EP4249415A1 true EP4249415A1 (en) 2023-09-27

Family

ID=81708599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20962463.4A Pending EP4249415A1 (en) 2020-11-20 2020-11-20 Guide rail support structure and elevator

Country Status (4)

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EP (1) EP4249415A1 (ja)
JP (1) JP7437532B2 (ja)
CN (1) CN116419906A (ja)
WO (1) WO2022107300A1 (ja)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52159555U (ja) * 1976-05-27 1977-12-03
JPWO2008023406A1 (ja) * 2006-08-22 2010-01-07 三菱電機株式会社 エレベータのレール保持装置
JP5858751B2 (ja) * 2011-11-28 2016-02-10 東芝エレベータ株式会社 エレベータのガイドレール支持構造
JP6331957B2 (ja) * 2014-10-20 2018-05-30 三菱電機株式会社 エレベーター用レール固定装置
JP6646893B2 (ja) * 2016-08-24 2020-02-14 フジテック株式会社 エレベータ用レール保持装置を備えるエレベータ及びエレベータ用ガイドレールの保持方法
EP3575259A1 (en) * 2018-05-29 2019-12-04 KONE Corporation Elevator guide rail mounting arrangement and method for mounting an elevator guide rail

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Publication number Publication date
JP7437532B2 (ja) 2024-02-22
WO2022107300A1 (ja) 2022-05-27
JPWO2022107300A1 (ja) 2022-05-27
CN116419906A (zh) 2023-07-11

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