EP1693329A1 - Aufzugsvorrichtung - Google Patents

Aufzugsvorrichtung Download PDF

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Publication number
EP1693329A1
EP1693329A1 EP03778823A EP03778823A EP1693329A1 EP 1693329 A1 EP1693329 A1 EP 1693329A1 EP 03778823 A EP03778823 A EP 03778823A EP 03778823 A EP03778823 A EP 03778823A EP 1693329 A1 EP1693329 A1 EP 1693329A1
Authority
EP
European Patent Office
Prior art keywords
car
counterweight
drive sheave
elevator apparatus
driving machine
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.)
Withdrawn
Application number
EP03778823A
Other languages
English (en)
French (fr)
Other versions
EP1693329A4 (de
Inventor
Yoshikatsu Mitsubishi Denki K.K. HAYASHI
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
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1693329A1 publication Critical patent/EP1693329A1/de
Publication of EP1693329A4 publication Critical patent/EP1693329A4/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035—Arrangement of driving gear, e.g. location or support
    • B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway

Definitions

  • the present invention relates to an elevator apparatus in which a car and a counterweight are raised and lowered inside a hoistway by a driving force from a driving machine installed in an upper portion of the hoistway.
  • a hoisting machine is installed above a counterweight inside a hoistway.
  • a car and a counterweight are suspended inside the hoistway by a main rope wound around a drive sheave of the hoisting machine.
  • a contact angle of the main rope relative to the drive sheave is approximately 180 degrees.
  • the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling a point of suspension of a car to be positioned closer to a center of gravity by a simple construction.
  • an elevator apparatus including: a driving machine having a drive sheave, the driving machine being disposed in an upper portion of a hoistway; a car having mutually opposite first and second side surface portions, the car being raised and lowered inside the hoistway by a driving force from the driving machine; a counterweight raised and lowered inside the hoistway by a driving force from the driving machine; a return pulley disposed above the second side surface portion; a first main rope including a first car end portion connected to the car near the first side surface portion and a first counterweight end portion connected to the counterweight, the first main rope being wound around the drive sheave, and suspending the car and the counterweight; and a second main rope including a second car end portion connected to the car near the second side surface portion and a second counterweight end portion connected to the counterweight, the second main rope being wound around the drive sheave and the return pulley, and suspending the car and the counterweight.
  • Figure 1 is a front elevation showing part of an elevator apparatus according to Embodiment 1 of the present invention
  • Figure 2 is a plan showing the elevator apparatus in Figure 1.
  • a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed inside a hoistway 1.
  • a car 4 is guided by the car guide rails 2 so as to be raised and lowered inside the hoistway 1.
  • a counterweight 5 is guided by the counterweight guide rails 3 so as to be raised and lowered inside the hoistway 1.
  • the car 4 includes mutually opposite first and second side surface portions 4a and 4b.
  • the counterweight 5 is disposed so as to face the first side surface portion 4a in a plane projected vertically.
  • the car guide rails 2 and the counterweight guide rails 3 are disposed such that an imaginary straight line connecting the counterweight guide rails 3 extends at a right angle relative to an imaginary straight line connecting the car guide rails 2 in a plane projected vertically.
  • a plurality of car guiding apparatuses 6 for engaging the car guide rails 2 are mounted to the car 4.
  • the car guiding apparatuses 6 are disposed on first and second edge portions in a width direction on an upper portion of the car 4 and on first and second edge portions in the width direction on a lower portion of the car 4.
  • a plurality of counterweight guiding apparatuses 7 for engaging the counterweight guide rails 3 are mounted to the counterweight 5.
  • the counterweight guiding apparatuses 7 are disposed on first and second edge portions in a width direction on an upper portion of the counterweight 5 and on first and second edge portions in the width direction on a lower portion of counterweight 5.
  • Roller guiding apparatuses for example, can be used for the car guiding apparatuses 6 and the counterweight guiding apparatuses 7.
  • a supporting platform 8 (omitted from Figure 2) is installed in an upper portion inside the hoistway 1.
  • the supporting platform 8 is fixed relative to at least one of the guide rails 2 and 3, and load on the supporting platform 8 is supported by that guide rail 2 or 3.
  • a driving machine 9 for raising and lowering the car 4 and the counterweight 5 is disposed on the supporting platform 8, specifically, above the counterweight 5.
  • the driving machine 9 has: a driving machine main body 10; a drive sheave 11 rotated by the driving machine main body 10; and a shaft supporting portion 12 for supporting a rotating shaft of the drive sheave 11 at an opposite end from the driving machine main body 10.
  • a motor for generating a driving force, and a braking apparatus for braking rotation of the drive sheave 11 are disposed on at least one of the driving machine main body 10 and the shaft supporting portion 12.
  • a cylindrical hoisting machine having an axial length dimension that is greater than a diameter of the drive sheave 10 is used for the driving machine 9.
  • the driving machine 9 is disposed so as to overlap partially with the counterweight 5 and not to overlap with the car 4 in a plane projected vertically.
  • the driving machine 9 is installed such that a rotating shaft of the drive sheave 10 extends parallel (including generally parallel) to a depth direction of the car 4 and a width direction of the counterweight 5 and horizontally (including generally horizontally).
  • a rotatable return pulley 13 is disposed above the second side surface portion 4b inside the hoistway 1.
  • the return pulley 13 is mounted onto the supporting platform 8 so as to be at a height equal to that of the drive sheave 11.
  • the return pulley 13 is installed such that a rotating shaft thereof extends parallel to a rotating shaft of the drive sheave 11.
  • a diameter of the return pulley 13 is equal to a diameter of the drive sheave 11.
  • the car 4 and the counterweight 5 are suspended inside the hoistway 1 by a plurality of first main ropes 14 and a plurality of second main ropes 15.
  • the number of first and second main ropes 14 and 15 is equal (two of each in Figure 2, for example).
  • the first main ropes 14 are wound around the drive sheave 11.
  • the first main ropes 14 have: first car end portions 14a connected to a lower portion of the car 4 near the first side surface portion 4a; and first counterweight end portions 14b connected to the counterweight 5.
  • the second main ropes 15 are wound around the drive sheave 11 and the return pulley 13.
  • the second main ropes 15 have: second car end portions 15a connected to a lower portion of the car 4 near the second side surface portion 4b; and second counterweight end portions 15b connected to the counterweight 5.
  • a plurality of car springs 16 that permit inclination of the main ropes 14 and 15 are disposed on connecting portions between the first and second main ropes 14 and 15 and the car 4.
  • a plurality of counterweight springs 17 that permit inclination of the main ropes 14 and 15 are disposed on connecting portions between the first and second main ropes 14 and 15 and the counterweight 5.
  • Main rope connecting portions 4c and 4d (see Figure 2) to which the first and second car end portions 14a and 15a are connected are disposed on first and second sides in a width direction of a lower portion of the car 4.
  • An imaginary straight line connecting the main rope connecting portions 4c and 4d extends parallel to a direction of frontage of the car 4 and passes through a center of gravity of the car 4 in a plane projected vertically. In other words, a point of suspension of the car 4 by the first and second main ropes 14 and 15 is aligned with the center of gravity of the car 4.
  • an elevator apparatus of this kind (a machine-roomless elevator) since the car 4 is suspended substantially at its center of gravity by distributing the first and second main ropes 14 and 15 to two sides of the car 4, the car 4 can be raised and lower stably, enabling the strength of the guide rails 2 and 3 to be reduced, and costs also to be reduced. Vibrations generated in the car 4 during running are also suppressed, making it possible to operate the car 4 at high speed.
  • a contact angle of the second main ropes 15 on the drive sheave 11 can be made approximately 180 degrees, sufficient traction capacity can be ensured.
  • Figure 3 is a front elevation showing part of an elevator apparatus according to Embodiment 2 of the present invention
  • Figure 4 is a plan showing the elevator apparatus in Figure 3.
  • a first pulley 21 that rotates together with the drive sheave 11 is disposed on the rotating shaft of the drive sheave 11.
  • a second pulley 22 that rotates together with the return pulley 13 is disposed on the rotating shaft of the return pulley 13.
  • An annular timing belt 23 functioning as an annular member is wound around the first and second pulleys 21 and 22.
  • a synchronizing means includes: the first pulley 21, the second pulley 22, and the timing belt 23. The rest of the configuration is similar to that of Embodiment 1.
  • rotation of the drive sheave 11 is transmitted to the return pulley 13 by means of the first pulley 21, the timing belt 23, and the second pulley 22.
  • rotation of the drive sheave 11 and rotation of the return pulley 13 are constantly synchronized.
  • the return pulley 13 functions in a similar manner to the drive sheave 11. Consequently, traction can also be substantially improved for the second main ropes 15.
  • FIG. 5 is a front elevation showing part of an elevator apparatus according to Embodiment 3 of the present invention.
  • a tension adjusting mechanism 24 for adjusting tension in a timing belt 23 is disposed in a vicinity of a first pulley 21.
  • the tension adjusting mechanism 24 has: an idle pulley rotating in contact with the timing belt 23; and a pressing means for pressing the idle pulley against the timing belt 23.
  • the pressing force of the idle pulley on the timing belt 23 is adjustable.
  • the rest of the configuration is similar to that of Embodiment 2.
  • the tension in the timing belt 23 can be stabilized, enabling traction in the second main ropes 15 to be improved more reliably.
  • FIG. 6 is a front elevation showing part of an elevator apparatus according to Embodiment 4 of the present invention.
  • a rotatable deflection sheave 25 functioning as a contact angle increasing means around which the second main ropes 15 are wound is disposed in a vicinity of a drive sheave 11.
  • a deflection sheave 25 is disposed in upper portion inside the hoistway 1 between the drive sheave 11 and a return pulley 13. More specifically, a portion of second main ropes 15 between the drive sheave 11 and the return pulley 13 is wound around the deflection sheave 25.
  • resin-coated ropes in which an outer layer coating body composed of a high-friction resin material is disposed on an outer peripheral portion can be used for ropes constituting the first and second main ropes 14 and 15.
  • resin-coated ropes of this kind a large traction force can be ensured with a reduced contact angle. Since resin-coated ropes enable flexibility to be increased more than simple steel ropes, diameters of the drive sheave 11 and the return pulley 13 can be reduced.
  • roller guiding apparatuses were used for the car guiding apparatuses 6 and the counterweight guiding apparatuses 7, but it is also possible to use sliding guide shoes.
  • the driving machine 9 and the return pulley 13 were supported by the guide rails 2 and 3, but they may also be supported by a building, for example, by supporting portions fixed to a beam fixed to the building, or by a hoistway wall, etc.
  • the driving machine 9 and the return pulley 13 may also be modularized as a driving machine unit by mounting them to a shared supporting platform 8. Thus, on-site installation can be simplified.
  • the return pulley 13 is disposed at a height equal to that of the drive sheave 11, but the return pulley 13 may also be disposed so as to be offset vertically relative to the drive sheave 11.
  • the diameter of the return pulley 13 and the diameter of the drive sheave 11 were equal, but the diameters may also be mutually-different if required.
  • first main ropes 14 and the number of second main ropes 15 was equal, but the numbers may also be mutually-different if required.
  • Ropes having different cross-sectional constructions, or made of different materials, etc. may also be used for the first main ropes 14 and the second main ropes 15.
  • pulleys 21 and 22 and a timing belt 23 were combined as a synchronizing means, but the synchronizing means is not limited to these, and for example, sprockets and chains may also be combined.
  • a deflection sheave 25 was shown as the contact angle increasing means, but the contact angle increasing means may also be a guiding member for guiding the second main ropes 15 without rotating. In that case, it is preferable for a sliding surface for the second main ropes 15 on the guiding member to be constituted by a low-friction member.
  • main rope connecting portions 4c and 4d were disposed on a lower portion of a car 4, but they may also be disposed on between an upper portion and the lower portion, or on the upper portion, etc., provided that sufficient supporting strength can be ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP03778823A 2003-12-11 2003-12-11 Aufzugsvorrichtung Withdrawn EP1693329A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2003/015881 WO2005056456A1 (ja) 2003-12-11 2003-12-11 エレベータ装置

Publications (2)

Publication Number Publication Date
EP1693329A1 true EP1693329A1 (de) 2006-08-23
EP1693329A4 EP1693329A4 (de) 2011-07-06

Family

ID=34674686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03778823A Withdrawn EP1693329A4 (de) 2003-12-11 2003-12-11 Aufzugsvorrichtung

Country Status (4)

Country Link
EP (1) EP1693329A4 (de)
JP (1) JPWO2005056456A1 (de)
CN (1) CN100340465C (de)
WO (1) WO2005056456A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103274335B (zh) * 2013-05-29 2015-12-23 广西鑫深科技有限公司 直顶式载货升降平台
CN104192673A (zh) * 2014-03-18 2014-12-10 永大电梯设备（中国）有限公司 一种无机房电梯装置
CN105800431B (zh) * 2016-04-12 2019-02-19 波士顿电梯（湖州）有限公司 同步轿底轮结构的稳定型曳引系统
CN109455601A (zh) * 2019-01-04 2019-03-12 冯克电梯(上海)有限公司 一种电梯对重后置装置
CN111792494A (zh) * 2019-06-21 2020-10-20 李安生 下置曳引机的单立柱多层楼房电梯
CN110397245B (zh) * 2019-07-11 2021-10-22 日立电梯（中国）有限公司 井道结构、吊挂装置及电梯系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197672U (de) * 1986-06-03 1987-12-16
EP0905081A2 (de) * 1997-09-26 1999-03-31 Kabushiki Kaisha Toshiba Einsetzen einer Antriebseinheit in einem Aufzugsschacht
EP0953538A2 (de) * 1998-04-28 1999-11-03 Kabushiki Kaisha Toshiba Gezogener Aufzug
WO2003031310A1 (fr) * 2001-09-27 2003-04-17 Mitsubishi Denki Kabushiki Kaisha Ascenseur sans local de machinerie
WO2003043922A1 (de) * 2001-11-23 2003-05-30 Inventio Ag Aufzug mit riemenartigem übertragungsmittel, insbesondere mit keilrippen-riemen, als tragmittel und/oder treibmittel
EP1319627A1 (de) * 2000-09-12 2003-06-18 Mitsubishi Denki Kabushiki Kaisha Aufzugsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1121045A (ja) * 1997-07-01 1999-01-26 Hitachi Ltd 小型エレベーターのかごの支持方法
JP4262796B2 (ja) * 1998-03-04 2009-05-13 東芝エレベータ株式会社 エレベータのかご吊り構造
EP1972591B8 (de) * 2000-09-20 2011-01-12 Mitsubishi Denki Kabushiki Kaisha Aufzug
JP2002145556A (ja) * 2000-11-13 2002-05-22 Mitsubishi Electric Corp エレベータ装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197672U (de) * 1986-06-03 1987-12-16
EP0905081A2 (de) * 1997-09-26 1999-03-31 Kabushiki Kaisha Toshiba Einsetzen einer Antriebseinheit in einem Aufzugsschacht
EP0953538A2 (de) * 1998-04-28 1999-11-03 Kabushiki Kaisha Toshiba Gezogener Aufzug
EP1319627A1 (de) * 2000-09-12 2003-06-18 Mitsubishi Denki Kabushiki Kaisha Aufzugsvorrichtung
WO2003031310A1 (fr) * 2001-09-27 2003-04-17 Mitsubishi Denki Kabushiki Kaisha Ascenseur sans local de machinerie
WO2003043922A1 (de) * 2001-11-23 2003-05-30 Inventio Ag Aufzug mit riemenartigem übertragungsmittel, insbesondere mit keilrippen-riemen, als tragmittel und/oder treibmittel
WO2003043926A1 (de) * 2001-11-23 2003-05-30 Inventio Ag Aufzugssystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005056456A1 *

Also Published As

Publication number Publication date
JPWO2005056456A1 (ja) 2007-07-05
WO2005056456A9 (ja) 2005-07-28
WO2005056456A1 (ja) 2005-06-23
EP1693329A4 (de) 2011-07-06
CN100340465C (zh) 2007-10-03
CN1723168A (zh) 2006-01-18

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