WO2003074406A1 - Dispositif de mesure de la charge d'un ascenseur - Google Patents

Dispositif de mesure de la charge d'un ascenseur Download PDF

Info

Publication number
WO2003074406A1
WO2003074406A1 PCT/US2002/006216 US0206216W WO03074406A1 WO 2003074406 A1 WO2003074406 A1 WO 2003074406A1 US 0206216 W US0206216 W US 0206216W WO 03074406 A1 WO03074406 A1 WO 03074406A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring apparatus
mounting plate
load
hoistway
load cell
Prior art date
Application number
PCT/US2002/006216
Other languages
English (en)
Inventor
Dale Barrett
Nizar Dassouki
Original Assignee
Otis Elevator Company
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 Otis Elevator Company filed Critical Otis Elevator Company
Priority to JP2003572886A priority Critical patent/JP4102760B2/ja
Priority to KR1020047012528A priority patent/KR100872220B1/ko
Priority to EP02706477A priority patent/EP1478591B1/fr
Priority to AU2002240562A priority patent/AU2002240562A1/en
Priority to US10/500,622 priority patent/US7237656B2/en
Priority to DE60234718T priority patent/DE60234718D1/de
Priority to CNB028283961A priority patent/CN100366519C/zh
Priority to PCT/US2002/006216 priority patent/WO2003074406A1/fr
Priority to ES02706477T priority patent/ES2337659T3/es
Publication of WO2003074406A1 publication Critical patent/WO2003074406A1/fr
Priority to HK05108833A priority patent/HK1076790A1/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3476—Load weighing or car passenger counting devices
    • B66B1/3484—Load weighing or car passenger counting devices using load cells
    • 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
    • B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads

Definitions

  • This invention relates to a method and apparatus for measuring the load of an elevator car and more particularly for measuring the load at on each tension member.
  • U.S. Patent 6,021 ,873 describes a load measurement device located at the dead end hitch.
  • the tension member terminations are mounted to a bracket, which is in turn mounted to a plate.
  • the plate is attached to a guiderail to fix the tension members relative to the hoistway.
  • An edge flange is attached to the plate opposite the guiderails and a strain gauge is attached to the flange.
  • the load exerted by the car suspended by the tension members is transmitted by the plate to the edge flange which is designed such that the force applied to the edge plate by the hoisting ropes causes a large deformation in the edge flange.
  • the strain in the edge flange is measured by the strain gauge.
  • Japanese patent application 6-255933 describes a load measuring device located at the dead end hitch.
  • the rope terminations pass through a lower plate fixed to a hoistway beam.
  • the rope terminations are fixed to an upper plate, which is pivotally fixed to the lower plate.
  • a load cell is positioned between the upper and lower plates. The load of the car is transmitted through the tension members, to the rope terminations, to the upper plate, forcing it to rotate toward the lower plate thus exerting a force on the load cell proportional to the weight of the car.
  • the prior art load measurement systems require not only mounting structure but also provisions for transferring the load from the mounting structure to the load measuring device.
  • the object of the invention is to provide an improved method and apparatus for measuring the load of an elevator.
  • a further object of the present invention is to provide a method and apparatus for measuring the load on each tension member of an elevator installation.
  • a load weighing device for an elevator is located at the termination of a tension member for suspending the elevator car.
  • a typical elevator system includes an elevator car and counterweight suspended by a tension member such as a steel or synthetic rope or flat belt.
  • the tension member is driven by a machine to position the car and counterweight within a hoistway.
  • the tension member is fixed within the hoistway at its first and second ends within the hoistway.
  • Terminations are fixed to the end of the tension member which are in turn attached to a structure such as a mounting plate or beam that is fixed relative the hoistway.
  • the termination typically consists of a threaded rod which extends through an opening in the beam of mounting plate.
  • a spring of buffer is placed over the rod. The spring is held in place between the beam and the end of the rod by a series of washers and nuts.
  • a load cell is fixed between the spring and an upper surface of the mounting plate and spring such that the load cell measures the weight borne by the tension member.
  • a self-aligning washer is fitted between the end of the spring and the load cell. This maintains the tension member in a position normal to the load cell to distribute the load evenly across the load cell.
  • FIG. 1 is a schematic of an elevator installation according to the present invention.
  • FIG. 2 is a plan view of a load weighing apparatus according to the present invention
  • Fig. 3 is a plan view of the spherical washer.
  • an elevator system 10 includes a load measuring device 12 as shown in Figure 1.
  • the elevator system includes 10 an elevator car 14, which is positioned within a hoistway 16 by a machine 18.
  • the machine 18 is shown at the top of the hoistway 16 mounted on a machine beam 20.
  • the exact location of the machine 18 is not critical to the operation of the load weighing device 12.
  • the car is guided within the hoistway on guide rails 22.
  • a counterweight 24 serves to balance the load of the elevator car 14.
  • the counterweight is guided within the hoistway on a second set of guide rails 26.
  • Tension members 28 suspend the counterweight 24 and car 14.
  • the tension members 28 are driven by the machine 18, which in turn controls the position of the car 14 and counterweight 24.
  • the tension members 28 may consist of multiple ropes or flat belts.
  • the tension members 28 are usually fixed at a first 30 and second 32 end.
  • An anchorage 34 incorporating the load measuring device 12 is shown in Fig. 2.
  • the tension members 28 are attached to terminations 36.
  • the terminations 36 include a rod 38 having a threaded end 40. The rod extends through a mounting plate 42.
  • the mounting plate 42 is designed for minimal deflection and may be fixed to a guiderail 22, machine beam 20, the wall of the hoistway, or any other structure suitable to support the weight of the car 14. In the alternative the mounting plate 42 may be eliminated and the terminations attached directly to the machine beam 20 or other suitable structure.
  • the spring 44 is held in place between the upper surface 46 of the mounting plate 42 and a washer 48 by a first nut 50, a lock nut 52 and cotter pin 54.
  • a load cell 56 is located between spring 44 and the upper surface 46 of the mounting plate 42.
  • a washer 58 is fitted between the load cell 56 and the spring 44 to evenly distribute the load over the load cell 56.
  • the load cell 56 has an annular shape defining a hole through which the rod 38 passes.
  • the load cell 56 is conventional consisting of a bonded foil stranded and full bridge (not shown), which produces an electrical signal proportional to the load.
  • the signal from each load cell 56 is summed together to obtain the total load.
  • the signals may also be analyzed individually to determine the portion of the load carried by each tension member.
  • the springs 44 may be adjusted by either tightening or loosening the nuts 50 and 52 to equalize the load carried by each tension member 28.
  • the load in each tension member 28 individually, any stretching of degradation of the tension members 28 can also be sensed as the loads carried by each tension member 28 varies over time.
  • a spherical washer 60 which consists of an upper portion 62a and a lower portion 62b.
  • the upper portion has a flat upper surface 64a which interfaces with the spring 44 and convex lower surface 64b which interfaces with a concave upper surface 66a of the lower portion 62b.
  • the lower portion 62b has a flat lower surface 66b which interfaces with the upper surface 46 of the mounting plate 42.
  • the interaction of the convex lower surface 64a and the concave upper surface 66b distributes the load evenly over the load cell 56. Even distribution of the load minimizes any errors that can occur detecting the load applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un dispositif amélioré de mesure de la charge d'un ascenseur comprenant une benne suspendue par un élément de tension dans une cage, un élément (36) d'extrémité à une extrémité de l'élément (28) de tension, une plaque (42) de montage permettant de fixer l'élément d'extrémité à la cage, et un élément (38) de liaison servant à fixer l'élément d'extrémité à la plaque de montage comprenant également une cellule (56) de charge positionnée entre l'élément de liaison et la plaque de montage, la cellule de charge générant un signal proportionnel à la charge de la benne.
PCT/US2002/006216 2002-02-28 2002-02-28 Dispositif de mesure de la charge d'un ascenseur WO2003074406A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP2003572886A JP4102760B2 (ja) 2002-02-28 2002-02-28 測定装置
KR1020047012528A KR100872220B1 (ko) 2002-02-28 2002-02-28 엘리베이터 하중 측정 장치 및 이를 포함하는 엘리베이터 시스템
EP02706477A EP1478591B1 (fr) 2002-02-28 2002-02-28 Dispositif de mesure de la charge d'un ascenseur
AU2002240562A AU2002240562A1 (en) 2002-02-28 2002-02-28 Elevator load weighing device
US10/500,622 US7237656B2 (en) 2002-02-28 2002-02-28 Elevator load weighing device
DE60234718T DE60234718D1 (de) 2002-02-28 2002-02-28 Aufzuglastwiegevorrichtung
CNB028283961A CN100366519C (zh) 2002-02-28 2002-02-28 电梯载荷测量装置及电梯系统
PCT/US2002/006216 WO2003074406A1 (fr) 2002-02-28 2002-02-28 Dispositif de mesure de la charge d'un ascenseur
ES02706477T ES2337659T3 (es) 2002-02-28 2002-02-28 Dispositivo de pesaje de la carga de un elevador.
HK05108833A HK1076790A1 (en) 2002-02-28 2005-10-05 Elevator load weighing device and elevator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/006216 WO2003074406A1 (fr) 2002-02-28 2002-02-28 Dispositif de mesure de la charge d'un ascenseur

Publications (1)

Publication Number Publication Date
WO2003074406A1 true WO2003074406A1 (fr) 2003-09-12

Family

ID=27787369

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/006216 WO2003074406A1 (fr) 2002-02-28 2002-02-28 Dispositif de mesure de la charge d'un ascenseur

Country Status (9)

Country Link
EP (1) EP1478591B1 (fr)
JP (1) JP4102760B2 (fr)
KR (1) KR100872220B1 (fr)
CN (1) CN100366519C (fr)
AU (1) AU2002240562A1 (fr)
DE (1) DE60234718D1 (fr)
ES (1) ES2337659T3 (fr)
HK (1) HK1076790A1 (fr)
WO (1) WO2003074406A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1894153B (zh) * 2004-09-24 2010-07-14 三菱电机株式会社 无机房电梯装置
WO2017037313A1 (fr) * 2015-09-01 2017-03-09 Lift Sensor, S.L. Dispositif de contrôle de la tension de câbles
EP3210924A1 (fr) 2016-02-23 2017-08-30 Inventio AG Ensemble de connexion d'ascenseur avec jauge de contrainte
CN110342364A (zh) * 2019-07-26 2019-10-18 大连凯晟科技发展有限公司 一种电梯超载装置测试仪
US10618772B2 (en) 2017-06-20 2020-04-14 Otis Elevator Company Elevator termination assembly that provides an indication of elevator car load
ES2737842R1 (es) * 2017-05-26 2020-11-06 Tim Ebeling Sistema de ecualización de miembros de suspensión para elevadores

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2249169B1 (es) * 2004-09-02 2007-03-16 Dinacell Electronica, S.L. Celula de carga para ascensores y similares.
JP4929785B2 (ja) * 2006-03-28 2012-05-09 三菱電機株式会社 エレベータの制御ケーブル装置
CN102765648B (zh) * 2011-05-05 2014-10-22 上海三菱电梯有限公司 电梯悬挂绳张力测量及调整装置
CN103072872A (zh) * 2011-10-25 2013-05-01 康力电梯股份有限公司 一种绳头挂板装置
CN103708320B (zh) * 2012-10-08 2015-10-07 上海力夏检测技术有限公司 一种便携的多绳提升系统绳索张力均衡仪
CN102910514B (zh) * 2012-11-01 2015-03-04 日立电梯（中国）有限公司 一种电梯轿厢称重系统及称重方法
JP6170810B2 (ja) * 2013-10-29 2017-07-26 株式会社日立ビルシステム エレベータの主ロープテンション計測装置及びエレベータ制御システム
ES2600869B1 (es) * 2015-07-10 2018-01-09 Dinacell Electrónica S.L. Célula de carga
CN105752781B (zh) * 2015-12-15 2018-06-22 上海长江斯迈普电梯有限公司 电梯智能称重装置及控制方法
CN109250597A (zh) * 2018-11-06 2019-01-22 广州绰立科技有限公司 电梯轿厢载重装置矫正方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793442A (en) * 1987-11-05 1988-12-27 Schindler Elevator Corporation Method and apparatus for providing pre-travel balancing energy to an elevator drive
JPH0398975A (ja) * 1989-09-11 1991-04-24 Mitsubishi Electric Corp エレベータの秤装置
US5421433A (en) * 1991-11-15 1995-06-06 Otis Elevator Company Elevator load-weighing at car hitch
US6021873A (en) * 1996-12-20 2000-02-08 Kone Oy Procedure and apparatus for the measurement of elevator load
US6123176A (en) * 1996-05-28 2000-09-26 Otis Elevator Company Rope tension monitoring assembly and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH028176A (ja) * 1988-06-24 1990-01-11 Mitsubishi Electric Corp エレベーターの荷重検出装置
JPH06255933A (ja) * 1993-03-03 1994-09-13 Otis Elevator Co エレベーターの過荷重検出装置
US5421422A (en) * 1993-11-19 1995-06-06 Boretec Inc Roller cutter mount for tunneling machine
JP2000086114A (ja) 1998-09-14 2000-03-28 Toshiba Corp エレベータ装置
KR100319936B1 (ko) * 1999-03-04 2002-01-09 장병우 엘리베이터 카의 진동 저감장치
US6341669B1 (en) * 2000-06-21 2002-01-29 Otis Elevator Company Pivoting termination for elevator rope

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793442A (en) * 1987-11-05 1988-12-27 Schindler Elevator Corporation Method and apparatus for providing pre-travel balancing energy to an elevator drive
JPH0398975A (ja) * 1989-09-11 1991-04-24 Mitsubishi Electric Corp エレベータの秤装置
US5421433A (en) * 1991-11-15 1995-06-06 Otis Elevator Company Elevator load-weighing at car hitch
US6123176A (en) * 1996-05-28 2000-09-26 Otis Elevator Company Rope tension monitoring assembly and method
US6021873A (en) * 1996-12-20 2000-02-08 Kone Oy Procedure and apparatus for the measurement of elevator load

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1478591A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1894153B (zh) * 2004-09-24 2010-07-14 三菱电机株式会社 无机房电梯装置
WO2017037313A1 (fr) * 2015-09-01 2017-03-09 Lift Sensor, S.L. Dispositif de contrôle de la tension de câbles
EP3210924A1 (fr) 2016-02-23 2017-08-30 Inventio AG Ensemble de connexion d'ascenseur avec jauge de contrainte
ES2737842R1 (es) * 2017-05-26 2020-11-06 Tim Ebeling Sistema de ecualización de miembros de suspensión para elevadores
US10618772B2 (en) 2017-06-20 2020-04-14 Otis Elevator Company Elevator termination assembly that provides an indication of elevator car load
CN110342364A (zh) * 2019-07-26 2019-10-18 大连凯晟科技发展有限公司 一种电梯超载装置测试仪

Also Published As

Publication number Publication date
KR100872220B1 (ko) 2008-12-05
EP1478591B1 (fr) 2009-12-09
KR20040084907A (ko) 2004-10-06
JP2005519009A (ja) 2005-06-30
HK1076790A1 (en) 2006-01-27
EP1478591A1 (fr) 2004-11-24
CN100366519C (zh) 2008-02-06
AU2002240562A1 (en) 2003-09-16
EP1478591A4 (fr) 2008-09-03
ES2337659T3 (es) 2010-04-28
JP4102760B2 (ja) 2008-06-18
CN1622914A (zh) 2005-06-01
DE60234718D1 (de) 2010-01-21

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