WO2006113153A2 - Dispositif d'ascenseur - Google Patents

Dispositif d'ascenseur Download PDF

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Publication number
WO2006113153A2
WO2006113153A2 PCT/US2006/012889 US2006012889W WO2006113153A2 WO 2006113153 A2 WO2006113153 A2 WO 2006113153A2 US 2006012889 W US2006012889 W US 2006012889W WO 2006113153 A2 WO2006113153 A2 WO 2006113153A2
Authority
WO
WIPO (PCT)
Prior art keywords
cars
car
ascending
speed
descending
Prior art date
Application number
PCT/US2006/012889
Other languages
English (en)
Other versions
WO2006113153A3 (fr
Inventor
Kensaku Yamane
Atsushi Yamada
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
Publication of WO2006113153A2 publication Critical patent/WO2006113153A2/fr
Publication of WO2006113153A3 publication Critical patent/WO2006113153A3/fr

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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
    • B66B1/3492—Position or motion detectors or driving means for the detector

Definitions

  • the present invention pertains to an elevator device in which distances between multiple cars provided inside the same hoistway are regulated in order to achieve safe operations of the respective cars.
  • Japanese Patent No. 3570427 describes a conventional elevator device having hoisting machines corresponding to the respective cars are provided with car-control mechanisms in order to detect the relative distances between adjoining cars, while detecting relative distances between respective adjoining cars in the vertical direction using laser sensors provided independently of the car-control mechanisms.
  • the relative distances between the respective cars are independently detected using car-control mechanisms and the laser sensors in order to improve safety by preventing the respective cars from coming into contact with each other.
  • An exemplary embodiment of the invention includes an elevator device that includes a first car and a second car that are provided inside the same hoistway so as to move in the vertical direction independently of each other.
  • a first control mechanism controls the relative ascending/descending speed and relative distance between the first and second cars through a first detection system and a second control mechanism that controls the relative ascending/descending speed and relative distance between the first and second cars through a second detection system.
  • the first detection system is provided independently of the second detection system.
  • the first detection system includes at least two encoders that detect ascending/descending speeds and positions of the respective cars.
  • the first encoder is associated with the first car and the second encoder is associated with the second car.
  • the second detection system includes at least two speed regulators that are provided with rotary shafts that rotate as the first and second cars ascend/descend so as to detect excessive speeds of the respective cars, each of the speed regulators include a speed-regulator encoder that detects the ascending/descending speeds and positions of the respective cars as the respective rotary shafts rotate.
  • the speed regulators are provided with speed-regulator encoders that detect the ascending/descending speeds and positions of the respective cars, so that the relative ascending/descending speeds and relative distances between the respective adjoining cars can be detected accurately.
  • the relative ascending/descending speeds and relative distances between the respective cars can be detected even when the relative vertical distances between adjoining cars increase, without being affected by the distances separating them from each other. Even in the case of the structure in that two cars are provided inside the same hoistway, the relative ascending/descending speeds and relative distances between the respective cars can be detected accurately without being affected by oscillations and distances between the cars.
  • Further embodiments of the invention include that the ascent/descent of the respective cars is stopped when at least the first car-control mechanism or the second car- control mechanism has determined that the relative distance between the respective cars is small with respect to the relative ascending/descending speed. [0009] Furthermore, because the relative ascending/descending speeds and relative vertical distances between the respective adjoining cars are detected separately by the independent first car-control mechanism and second car-control mechanism, the fact that the relative distance between the respective cars has become small with respect to the relative ascending/descending speed can be detected even more accurately. [0010] In addition, the speed-regulator encoders are capable of detecting the absolute values of the rotational angles of the rotary shafts.
  • the relative distances between the respective cars can be found during the ascent/descent of the cars even in the event of a power failure, for example, so that there is no need for a backup power supply.
  • the second car-control mechanism is provided that can detect the relative ascending/descending speeds and relative distances accurately, independently of the first car-control mechanism and without being affected by the conditions of the cars, safety can be further improved by preventing the respective cars from coming into contact with each other.
  • Figure 1 is a schematic diagram showing the overall structure of an elevator device equipped with 2 cars inside the same hoistway, in an embodiment pertaining to the present invention.
  • Figure 2 is a diagram showing a car-control mechanism for controlling the respective cars based on output signals from the respective encoders in Figure 1.
  • Figure 3 is a diagram showing the relative ascending/descending speed and relative distance between the respective cars in Figure 1.
  • the elevator device is housed in a single hoistway 1 that extends in the vertical direction, and in a machine room 2 that is provided above the hoistway 1.
  • first car 3 that ascends/descends vertically along guiderails, not illustrated
  • second car 4 that ascends/descends vertically in the hoistway 1 while staying a prescribed distance below the first car 3
  • first and second weights 7 and 8 that are connected to the respective cars 3 and 4 via first and second hoisting ropes
  • the machine room 2 houses first and second hoisting machines 11 and 12 for raising/lowering first and second cars 3 and 4 via the first and second ropes 5 and 6, and first and second speed regulators 13 and 14 that detect the ascending/descending speeds of the first and second cars 3 and 4.
  • the first and second cars 3 and 4 are designed to be raised/lowered independently of each other by the first and second hoisting machines 11 and 12.
  • Rotational forces are applied to the first and second hoisting machines 11 and 12 by driving motors, not illustrated, in order to raise/lower the first and second cars 3 and 4 and first and second weights 7 and 8 via the first and second hoisting ropes 5 and 6.
  • the rotary shafts of the first and second hoisting machines 11 and 12 are provided with a first detection system, which includes first and second hoisting-machine encoders 15 and 16 that detect the ascending/descending speeds and positions of the first and second cars 3 and 4 along with the rotations of the rotary shafts.
  • a second detection system includes the first and second speed regulators 13 and 14 that are linked to first and second cars 3 and 4 via first and second speed regulator ropes 17a and 17b that run across the speed regulators 13 and 14. As the cars 3 and 4 are raised/lowered, the speed regulator ropes 17a and 17b are also raised/lowered so as to rotate the rotary shafts of the respective speed regulators 13 and 14.
  • the rotary shafts of the first and second speed regulators 13 and 14 are provided with first and second speed-regulator encoders 18 and 19 that detect the ascending/descending speeds and positions of the first and second cars 3 and 4 when the rotary shafts rotate.
  • respective speed regulators 13 and 14 slow the first and second speed regulator ropes 17a and 17b in order to regulate the ascending/descending speeds of the respective cars 3 and 4, or emergency stopping of the respective cars 3 and 4 is performed.
  • first and second hoisting-machine encoders 15 and 16 transmit the respective ascending/descending speeds and positions that are detected for the first and second cars 3 and 4 as output signals to first and second car-control circuits 21 and 22.
  • the ascending/descending speeds and positions of the respective cars 3 and 4 are regulated by the first and second car-control circuits 21 and 22, and the relative ascending/descending speed and the relative distance between the first and second cars 3 and 4 are detected as well.
  • the first and second cars 3 and 4 and first and second car- control circuits 21 and 22 constitute what is called a first control circuit.
  • the first and second speed-regulator encoder 18 and 19 transmit the respective ascending/descending speeds and positions that are detected for the first and second cars 3 and 4 as output signals to second control circuit 23 serving as a second car-control mechanism, and the relative ascending/descending speed and relative distance between the first and second cars 3 and 4 are detected by the second control circuit 23 independently of the first and second car-control circuits 21 and 22.
  • first and second speed-regulator encoders 18 and 19 can detect the absolute values of the rotational angles of the rotary shafts of first and second speed regulators 13 and 14, and they can detect the positions of first and second cars 3 and 4 accurately even when the detection of the positions of the first and second cars 3 and 4 is temporarily interrupted due to a power failure while the speed regulators 13 and 14 are operating.
  • the first and second cars 3 and 4 provided inside the same hoistway 1 are raised/lowered in the vertical direction independently of each other by the first and second hoisting machines 11 and 12 while at least a prescribed distance is maintained between the first and second cars 3 and 4.
  • Equation (1) when the relative speed Vl - V2 between first and second cars 3 and 4 is substituted as speed V, and the relative distance Sl - S2 between first and second cars 3 and 4 is substituted as traveling distance S, the distance needed for first and second cars 3 and 4 to come to a stop in an emergency stop, that is, relative distance Sl - S2, can be expressed as follows.
  • the first and second cars can be reliably prevented from coming into contact with each other by carrying out emergency stopping of first and second cars 3 and 4 when the Equation (3) holds.
  • the relative ascending/descending speeds and relative distances between adjoining cars can be detected by providing hoisting-machine encoders and speed-regulator encoders for them, provided that the cars have independent hoisting machines and speed regulators.
  • first and second speed-regulator encoders 18 and 19 are provided on speed regulators for regulating excessive ascending/descending speeds of the respective weights 7 and 8, like the first and second speed regulators 13 and 14 that detect the ascending/descending speeds and positions of the first and second cars 3 and 4, for example, the relative ascending/descending speeds and the relative distances between respective adjoining cars 3 and 4 in the vertical direction can likewise be detected.
  • first and second regulators 13 and 14 are provided with first and second regulator encoders 18 and 19 in order to detect the relative ascending/descending speed and relative distance between the first and second cars 3 and 4, the relative ascending/descending speed and the relative distance between the respective cars 3 and 4 can be detected reliably without being affected by the conditions of the respective cars 3 and 4, so that safety can be further improved by preventing respective cars 3 and 4 from coming into contact with each other.
  • first and second regulators 13 and 14 are provided with speed-regulator encoders 18 and 19 capable of detecting the absolute values of the rotational angles, there is no need for a backup power supply, so that an increase in cost due to a need for additional equipment can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Control (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

La présente invention a trait à des première et deuxième machines de levage munies de premier et deuxième codeurs de machine de levage assurant la détection de vitesses de montée/descente et des positions de première et deuxième cabines, et des arbres rotatifs de premier et deuxième régulateurs de vitesse munis de premier et deuxième codeurs de régulateurs de vitesse assurant la détection de vitesses de montée/descente et des positions des première et deuxième cabines lors de la rotation des arbres rotatifs. La vitesse relative de montée/descente et la position relative des première et deuxième cabines sont ensuite déterminées en fonction des résultats de détection.
PCT/US2006/012889 2005-04-13 2006-04-07 Dispositif d'ascenseur WO2006113153A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-115296 2005-04-13
JP2005115296A JP2006290575A (ja) 2005-04-13 2005-04-13 エレベータ装置

Publications (2)

Publication Number Publication Date
WO2006113153A2 true WO2006113153A2 (fr) 2006-10-26
WO2006113153A3 WO2006113153A3 (fr) 2006-12-07

Family

ID=37115648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/012889 WO2006113153A2 (fr) 2005-04-13 2006-04-07 Dispositif d'ascenseur

Country Status (2)

Country Link
JP (1) JP2006290575A (fr)
WO (1) WO2006113153A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1935830A1 (fr) * 2006-12-21 2008-06-25 Inventio Ag Ascenseur doté de deux cabines superposées dans une cage
US20100181150A1 (en) * 2007-07-20 2010-07-22 Kone Corporation Elevator and elevator arrangement
US7762376B2 (en) 2006-10-31 2010-07-27 Inventio Ag Elevator with two elevator cars which are disposed one above the other in a shaft
US8430210B2 (en) 2011-01-19 2013-04-30 Smart Lifts, Llc System having multiple cabs in an elevator shaft
US8925689B2 (en) 2011-01-19 2015-01-06 Smart Lifts, Llc System having a plurality of elevator cabs and counterweights that move independently in different sections of a hoistway

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5133352B2 (ja) * 2006-12-22 2013-01-30 オーチス エレベータ カンパニー 単一の昇降路に複数のかごを含むエレベータ装置
US9708158B2 (en) * 2012-04-16 2017-07-18 Mitsubishi Electric Corporation Multi-car elevator using an exclusion zone and preventing inter-car collision
CN106144852B (zh) * 2012-04-16 2018-09-25 三菱电机株式会社 多轿厢式电梯

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663538A (en) * 1993-11-18 1997-09-02 Sakita; Masami Elevator control system
US5877462A (en) * 1995-10-17 1999-03-02 Inventio Ag Safety equipment for multimobile elevator groups
US20050279584A1 (en) * 2002-11-09 2005-12-22 Thyssenkrupp Elevator Ag Elevator system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663538A (en) * 1993-11-18 1997-09-02 Sakita; Masami Elevator control system
US5877462A (en) * 1995-10-17 1999-03-02 Inventio Ag Safety equipment for multimobile elevator groups
US20050279584A1 (en) * 2002-11-09 2005-12-22 Thyssenkrupp Elevator Ag Elevator system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762376B2 (en) 2006-10-31 2010-07-27 Inventio Ag Elevator with two elevator cars which are disposed one above the other in a shaft
TWI386359B (zh) * 2006-10-31 2013-02-21 Inventio Ag 在井道中具有兩個被上下配置之升降車廂之升降機
EP1935830A1 (fr) * 2006-12-21 2008-06-25 Inventio Ag Ascenseur doté de deux cabines superposées dans une cage
EP1935829A1 (fr) * 2006-12-21 2008-06-25 Inventio Ag Ascenseur avec deux cabines dans une gaine
US20100181150A1 (en) * 2007-07-20 2010-07-22 Kone Corporation Elevator and elevator arrangement
US8584806B2 (en) * 2007-07-20 2013-11-19 Kone Corporation Elevator and elevator arrangement
US8430210B2 (en) 2011-01-19 2013-04-30 Smart Lifts, Llc System having multiple cabs in an elevator shaft
US8925689B2 (en) 2011-01-19 2015-01-06 Smart Lifts, Llc System having a plurality of elevator cabs and counterweights that move independently in different sections of a hoistway

Also Published As

Publication number Publication date
WO2006113153A3 (fr) 2006-12-07
JP2006290575A (ja) 2006-10-26

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