EP1325881B1 - Dispositif d'elevateur - Google Patents

Dispositif d'elevateur Download PDF

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Publication number
EP1325881B1
EP1325881B1 EP00964754A EP00964754A EP1325881B1 EP 1325881 B1 EP1325881 B1 EP 1325881B1 EP 00964754 A EP00964754 A EP 00964754A EP 00964754 A EP00964754 A EP 00964754A EP 1325881 B1 EP1325881 B1 EP 1325881B1
Authority
EP
European Patent Office
Prior art keywords
rope
synthetic fiber
elevator apparatus
ropes
main
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.)
Expired - Lifetime
Application number
EP00964754A
Other languages
German (de)
English (en)
Other versions
EP1325881A4 (fr
EP1325881A1 (fr
Inventor
Toshiaki Mitsubishi Denki Kabushiki Kaisha ISHII
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1325881A1 publication Critical patent/EP1325881A1/fr
Publication of EP1325881A4 publication Critical patent/EP1325881A4/fr
Application granted granted Critical
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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
    • B66B7/06—Arrangements of ropes or cables

Definitions

  • the present invention relates to an elevator apparatus in which a car is suspended by a main rope group including a main rope composed of a synthetic fiber rope.
  • an elevator apparatus is disclosed in Japanese Patent Laid-Open No. HEI 8-261972 , for example, in which the weight of a main rope is reduced by using a main rope composed of a synthetic fiber rope.
  • this elevator apparatus a car is suspended by the synthetic fiber rope alone.
  • an elevator apparatus is disclosed in Japanese Utility Model Laid-Open No. SHO 63-45759 , for example, in which a plurality of fire detectors are disposed inside a building and a hoistway of an elevator apparatus, operation being controlled in response to output from the fire detectors.
  • FIG. 5 is a structural diagram showing an example of a conventional elevator apparatus.
  • a machine room 2 is disposed in an upper portion of a hoistway 1.
  • a driving machine (a hoisting machine) 3 and a deflection sheave 4 are installed inside the machine room 2.
  • the driving machine 3 includes a drive sheave 3a.
  • a main rope group 5 is wound around the drive sheave 3a and the deflection sheave 4.
  • a car 6 is suspended from a first end portion of the main rope group 5.
  • a counterweight 7 is suspended from a second end portion of the main rope group 5. The car 6 and the counterweight 7 are raised and lowered inside the hoistway 1 by the driving machine 3 (see for example US 5881845 , on which the preamble of claim 1 is based).
  • the fire detectors 8a to 8c are each installed on a landing on each of several floors. If a fire is detected by the fire detectors 8b, for example, a detection signal is sent to a control apparatus (not shown), and the car 6 is moved to a nearby floor or to a lower-story emergency escape floor 9.
  • FIG 6 is a side elevation showing the driving machine 3 in Figure 5.
  • the driving machine 3 includes: the drive sheave 3a; and a motor 3b for rotating the drive sheave 3a, and is supported by a support platform 10.
  • the main rope group 5 includes a plurality of main ropes 11 wound around the drive sheave 3a. All of the main ropes 11 are composed of a synthetic fiber rope.
  • the main ropes 11 composed of the synthetic fiber rope have low heat tolerance compared to conventionally-used steel rope, it is desirable that the heat tolerance of the main rope group 5 be improved in order to move the car 6 to a nearby floor or the emergency escape floor 9 more reliably during a fire.
  • the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling heat tolerance of a main rope group to be improved while taking advantage of characteristics of a synthetic fiber rope.
  • an elevator apparatus including: a driving machine having a drive sheave; a main rope group having a plurality of main ropes wound around the drive sheave; and a car suspended by the main rope group, the car being raised and lowered by the driving machine, wherein at least one main rope composed of a synthetic fiber rope and at least one main rope composed of a steel rope are included in the main rope group.
  • Figure 1 is a structural diagram showing part of an elevator apparatus according to Embodiment 1 of the present invention, the overall construction of the elevator apparatus being similar to that of Figure 5.
  • a driving machine 3 includes: a drive sheave 3a; and a motor 3b for rotating the drive sheave 3a, and is supported by a support platform 10.
  • a main rope group 31 is wound around the drive sheave 3a.
  • a car 6 and a counterweight 7 ( Figure 5) are suspended inside the hoistway 1 by the main rope group 31.
  • the main rope group 31 includes: a plurality of main ropes composed of a synthetic fiber rope (hereinafter abbreviated to “the synthetic fiber ropes”) 12; and one main rope composed of a steel rope (hereinafter abbreviated to “the steel rope”) 13.
  • the number of steel ropes 13 is set to a minimum required for the steel rope 13 to support a maximum load by itself, the number required in this case being one.
  • FIG 2 is a perspective showing a construction of a synthetic fiber rope 12 from Figure 1.
  • an inner strand layer 24 having a plurality of inner strands 22 and filler strands 23 disposed in gaps between these inner strands 22 is disposed around a core wire 21.
  • Each of the inner strands 22 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like.
  • the filler strands 23 are composed of a polyamide, for example.
  • An outer strand layer 26 having a plurality of outer strands 25 is disposed around an outer circumference of the inner strand layer 24.
  • Each of the outer strands 25 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like in a similar manner to the inner strands 22.
  • a protective coating layer 28 is also disposed on an outer circumferential portion of the outer strand layer 26.
  • the synthetic fiber rope has a high coefficient of friction compared to the steel rope and is superior in flexibility.
  • a ratio D/d between a diameter D of the drive sheave 3a and a rope diameter d is required to be equal to or greater than 40.
  • the synthetic fiber ropes 12 it is possible to reduce D/d due to the characteristics thereof. Consequently, the diameter D of the drive sheave 3a can be reduced more than is conventionally possible.
  • the diameter d2 of the steel rope 13 is equal to or less than the diameter d1 of the synthetic fiber ropes 12.
  • the number of steel ropes 13 can also be two or more, but the characteristics of synthetic resin rope 12 can be utilized more fully by keeping to the minimum required for the steel rope 13 to support the maximum load by itself.
  • FIG. 3 is a structural diagram showing part of an elevator apparatus according to Embodiment 2 of the present invention.
  • a main rope group 32 is wound around the drive sheave 3a.
  • a plurality of synthetic fiber ropes 12 (in this case four) and one steel rope 13 are included in the main rope group 32.
  • the number of synthetic fiber ropes 12 is set such that the strength required of the main rope group 32 from a design perspective is achieved by the synthetic fiber ropes 12 alone.
  • the construction is such that the steel rope 13 is added superfluously to the overall strength of the main rope group 32, and loads do not have to be borne by the steel rope 13 during normal operation.
  • the steel rope 13 has, of course, a strength equal to or greater than the minimum required for the steel rope 13 to support the maximum load by itself.
  • the rest of the construction is similar to that of Embodiment 1.
  • the load acting on the steel rope 13 can be reduced during normal operation and the characteristics of synthetic fiber rope 12 can be fully utilized.
  • FIG 4 is a structural diagram showing part of an elevator apparatus according to Embodiment 3 of the present invention.
  • a barrier 33 functioning as an oil shielding means for preventing oil contained in the steel rope 13 from splashing and adhering to the synthetic fiber ropes 12 is fixed to the drive sheave 3a.
  • the barrier 33 is disposed on the drive sheave 3a between a groove for the steel rope 13 and grooves for the synthetic fiber ropes 12.
  • a rope cover 34 functioning as an oil shielding means for preventing oil contained in the steel rope 13 from splashing and adhering to the synthetic fiber ropes 12 while allowing rotation of the drive sheave 3a and movement of the steel rope 13 is disposed around the drive sheave 3a.
  • the rest of the construction is similar to that of Embodiment 2.
  • the steel rope 13 includes a hemp core containing an oil and the steel rope 13 bears a compressive load and is subjected to centrifugal force due to rotation, particularly when passing through the drive sheave 3a, the oil inside the steel rope 13 may splash onto a surrounding area. Hence, if the oil splashes and adheres to the synthetic fiber ropes 12, problems arise such as the traction capacity being reduced, etc.
  • the barrier 33 and the rope cover 34 are provided in Embodiment 3, the oil can be prevented from adhering to the synthetic fiber ropes 12 more reliably.
  • Embodiment 3 two kinds of oil shielding means, namely the barrier 33 and the rope cover 34, are used, but either one may also be used alone provided that the oil can be prevented from adhering to the synthetic fiber ropes 12.
  • Embodiments 1 to 3 an elevator apparatus using a 1:1 roping method is shown, but the present invention can be applied to any type of elevator apparatus provided that it is an elevator apparatus in which a car is suspended by means of a main rope group including a synthetic fiber rope.

Claims (5)

  1. Dispositif élévateur comportant :
    une machine d'entraînement (3) ayant une poulie motrice (3a) ;
    un groupe de câbles principaux (31, 32) ayant une pluralité de câbles principaux (12, 13) enroulés autour de ladite poulie motrice (3a) ; et
    une cabine (6) suspendue par ledit groupe de câbles principaux (31, 32), ladite cabine (6) étant levée et baissée par ladite machine d'entraînement (3), et
    caractérisé en ce que
    au moins un câble principal (12) constitué d'un câble en fibres synthétiques et au moins un câble principal (13) constitué d'un câble en acier sont inclus dans ledit groupe de câbles principaux (31, 32).
  2. Dispositif élévateur selon la revendication 1, dans lequel le nombre desdits câbles en acier (13) est établi à un minimum nécessaire pour qu'une charge maximum soit supportée par lesdits câbles en acier (13) seuls.
  3. Dispositif élévateur selon la revendication 1, dans lequel un diamètre dudit câble en acier (13) est égal ou inférieur à un diamètre dudit câble en fibres synthétiques (12).
  4. Dispositif élévateur selon la revendication 1, dans lequel le nombre desdits câbles en fibres synthétiques (12) est établi de telle sorte qu'une résistance nécessaire dudit groupe de câbles principaux (31, 32) à partir d'une perspective de conception est obtenue par lesdits câbles en fibres synthétiques (12) seuls.
  5. Dispositif élévateur selon la revendication 1, dans lequel un moyen de protection contre l'huile (33, 34), pour empêcher l'huile contenue dans ledit câble en acier (13) de venir en adhérence sur ledit câble en fibres synthétiques (12), est disposé autour dudit disque d'entraînement (3a).
EP00964754A 2000-10-10 2000-10-10 Dispositif d'elevateur Expired - Lifetime EP1325881B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/007027 WO2002030802A1 (fr) 2000-10-10 2000-10-10 Dispositif d'elevateur

Publications (3)

Publication Number Publication Date
EP1325881A1 EP1325881A1 (fr) 2003-07-09
EP1325881A4 EP1325881A4 (fr) 2006-06-21
EP1325881B1 true EP1325881B1 (fr) 2007-07-18

Family

ID=11736576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964754A Expired - Lifetime EP1325881B1 (fr) 2000-10-10 2000-10-10 Dispositif d'elevateur

Country Status (5)

Country Link
EP (1) EP1325881B1 (fr)
JP (1) JPWO2002030802A1 (fr)
CN (1) CN1220616C (fr)
DE (1) DE60035619T2 (fr)
WO (1) WO2002030802A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101084352B1 (ko) 2005-11-02 2011-11-16 오티스 엘리베이터 컴파니 상이한 크기의 부하 지지 부재들을 포함하는 엘리베이터 부하 지지 조립체
WO2009032170A1 (fr) * 2007-08-28 2009-03-12 Thyssenkrupp Elevator Capital Corporation Système de câblage à câble synthétique pour ascenseurs et puits de mine
EP2072447A1 (fr) 2007-12-20 2009-06-24 Inventio Ag Agencement de moyens de portage pour une installation d'ascenseur, installation d'ascenseur dotée d'un tel agencement de moyens de portage, ensemble de moyens de portage pour une telle installation de moyens de portage et procédé de fabrication d'un tel agencement de moyens de portage
EP4077192B1 (fr) * 2019-12-20 2024-05-08 Inventio Ag Ascenseur pourvue d'une pluralité de différents moyens de suspension

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59117699U (ja) * 1983-01-31 1984-08-08 株式会社東芝 エレベ−タのワイヤロ−プ
JPS61155184A (ja) * 1984-12-28 1986-07-14 株式会社東芝 多湿環境用エレベ−タのロ−プ
JPH02231385A (ja) * 1989-03-02 1990-09-13 Mitsubishi Electric Corp エレベータ用主索
FR2707309B1 (fr) * 1993-07-09 1995-08-11 Trefileurope France Sa Câble de levage.
IL133736A (en) * 1999-01-22 2003-10-31 Inventio Ag Synthetic fibre cable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN1409688A (zh) 2003-04-09
JPWO2002030802A1 (ja) 2004-02-19
DE60035619T2 (de) 2008-04-10
DE60035619D1 (de) 2007-08-30
EP1325881A4 (fr) 2006-06-21
EP1325881A1 (fr) 2003-07-09
CN1220616C (zh) 2005-09-28
WO2002030802A1 (fr) 2002-04-18

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