EP2951116A1 - Élément de compensation présentant un dispositif de blocage - Google Patents

Élément de compensation présentant un dispositif de blocage

Info

Publication number
EP2951116A1
EP2951116A1 EP14702552.2A EP14702552A EP2951116A1 EP 2951116 A1 EP2951116 A1 EP 2951116A1 EP 14702552 A EP14702552 A EP 14702552A EP 2951116 A1 EP2951116 A1 EP 2951116A1
Authority
EP
European Patent Office
Prior art keywords
compensation element
elevator car
elevator
blocking device
compensation
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Withdrawn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
EP14702552.2A
Other languages
German (de)
English (en)
Inventor
Heinz Widmer
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to EP14702552.2A priority Critical patent/EP2951116A1/fr
Publication of EP2951116A1 publication Critical patent/EP2951116A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B66B7/068—Cable weight compensating devices
    • 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
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B66B1/42—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings separate from the main drive

Definitions

  • the invention relates to an elevator installation and to a method for positioning an elevator cage in a desired position in an elevator installation according to the preambles of the independent claims.
  • an undesired height offset results between the floor of the floor and the tread surface of the elevator cage due to loading or unloading. This is particularly the case in the lower floors when the portion of the suspension means between the drive means and the elevator car is relatively long. It is therefore a need to compensate for this unwanted height offset.
  • Known systems for height offset compensation include, for example, load sensors, which measure a current load of the elevator car.
  • a current position of the elevator car is determined. From the data thus obtained, the elevator drive is controlled by an elevator control in such a way that the elevator car is moved to a desired position, in which the undesired height offset is largely compensated.
  • an elevator control in such a way that the elevator car is moved to a desired position, in which the undesired height offset is largely compensated.
  • Such a system is described, for example, in WO 2005/102897.
  • Other systems relate to a height offset compensation by vertical displacement of the drive means itself or the traction sheave of the drive means as described for example in DE 3903053.
  • a compensation element is provided on the elevator installation connected to the elevator car and the counter weight is connected.
  • the compensation element is arranged such that the weight shift of the suspension element is compensated or compensated by the counteracting compensating element.
  • EP-B 1-2289831 describes such an elevator installation with a compensation element.
  • the compensation element is guided below the area in which the elevator car can be moved in the elevator shaft via a compensation element disk.
  • the compensation element disc is displaceable in the vertical direction via an actuator so that the elevator car can be pulled down over the compensation element to compensate for a weight reduction.
  • a current position of the elevator car is determined by position sensors and adapted by continuous displacement of the compensation element disc in the vertical direction.
  • This system also has the disadvantage of a complex construction and a complex control.
  • only a discharge of the elevator car can be compensated in this way. It is therefore an object of the invention to provide an elevator system with an elevator car and a method for positioning an elevator car in the elevator system, which is structurally simple to implement and versatile. In this case, a height offset between a predetermined vertical height and a tread surface of the elevator car due to a linear expansion of the support means, in particular at different loads, to be as low as possible.
  • the invention according to claim 1 relates to an elevator installation with an elevator shaft and an elevator car which can be moved in the elevator shaft in the vertical direction, a suspension element which is connected to the elevator car and guided via a drive means to a counterweight, and a compensation element which is connected to the elevator car connected and led to the counterweight.
  • the compensation element is fixed to the elevator car.
  • the invention is characterized in that a blocking device is provided, with which the compensation element in the elevator installation can be fixed in such a way that, given a compensation element between the elevator car and the blocking device, a clamping force can be generated in the compensation element.
  • the drive means comprises, in addition to a drive motor, a traction sheave over which the support means is guided.
  • traction sheaves are designed to be blockable, wherein the support means is guided in the case of a blocked traction sheave slip over the traction sheave.
  • the suspension element is usually blocked on the traction sheave when it is blocked.
  • the compensation element is designed, for example, as a compensating cable or compensation belt and extends from the elevator car downwards into a region of the shaft bottom and from there back up to the counterweight. Also conceivable are designs as compensation chains.
  • the compensation element may be guided in the shaft bottom around a compensation element disc, which may be formed, for example, as a deflection roller mounted on the shaft bottom.
  • the blocking device allows a determination of the compensation element in the elevator installation.
  • the determination can be made with respect to a fixed or a movable component of the elevator installation.
  • the determination of the compensation element may be optional, i. the blocking device is designed to set the compensation element and release it again.
  • the blocking device is designed and arranged in the elevator installation such that a clamping force can be generated in the compensation element when the compensation element between the elevator car and the blocking device is fixed.
  • a bias voltage can be generated in the compensation element, which acts between the elevator car and the blocking device.
  • the blocking device allows to define an exact portion of the compensation element between the locking device and the elevator car, in which the clamping force can be generated.
  • Compensation element, elevator car and locking device are arranged to each other in such a way that the clamping force in the compensation element generates a pulling force down to the elevator car.
  • the clamping force in the compensation element corresponds to a seemingly charged mass, which increases in the event of a deflection of the elevator car upwards and decreases in the case of a deflection downwards.
  • an actually loaded (discharged) mass is at least partially compensated due to the associated displacement of the elevator car, whereby overall a vertical displacement of the elevator car is smaller than due to the actually charged (discharged) mass and the resulting extension or extension Shortening of the portion of the elastic support means without bias in the compensation element would be the case.
  • an undesired height offset can be comparatively low I k
  • the clamping force can be generated in the compensation element with a specified compensation element by a relative change in distance between the blocking device and the elevator car.
  • This can be achieved, for example, by moving the elevator car in a stationarily arranged blocking device or, for example, by a blocking device which can be moved in the vertical direction.
  • the blocking device may also be coupled with a separate drive, with which a stationary force on the fixed compensation element can be generated by the stationary locking device, for example via an additional blockable traction sheave around which the compensation element is guided.
  • the compensation element is designed as a compensating rope or compensation belt.
  • embodiments are preferred in which a desired spring constant or elasticity can be provided in a simple manner.
  • the blocking device and the compensation element are designed and arranged in the elevator installation such that a section of the compensation element between the blocking device and the elevator car runs freely in the elevator installation.
  • “Free” here means that the compensation element in the section between the blocking device and the elevator car at no other component of the elevator system such. a deflection roller is supported. This has the advantage that an expected elongation at this distance can be predicted in a simple manner with high accuracy due to the producible clamping force.
  • the blocking device is arranged stationarily in the elevator installation and has at least one brake shoe which acts directly on the compensation element in order to fix the compensation element.
  • the brake shoe has a large dimension in the direction of the compensation element in order to avoid compression of the compensation element. Suitable dimensions are e.g. from the training of the compensation element and open up to the expert directly.
  • the compensation element is guided over a compensation element disc and the blocking device is designed and arranged in the elevator installation such that the compensation element can be fixed for each position of the elevator car in a section between the compensation element disc and the elevator car.
  • the compensation element disk is used as a deflection formed in the region of the shaft bottom, so that in this case the compensation element in a vertical region between the guide roller and a lowermost position of the elevator car of the blocking device can be fixed.
  • the blocking device can be arranged in different, adapted to the circumstances of the elevator installation position, which is advantageous for example when retrofitting existing elevator systems with such a blocking device.
  • the compensation element is guided over a compensation element disc and the blocking device is designed and arranged in the elevator installation such that the compensation element can be fixed to the compensation element disc.
  • the blocking device may be e.g. be formed as at least one brake shoe, which can be pressed against the compensation element disc to clamp the compensation element to this compensation element disc.
  • the compensation element disc itself is designed to be detectable as part of the blocking device, the compensation element being guided without slip, in particular several times, around the compensation element disk.
  • a blocking device can be created structurally simple, which uses the possibly already existing compensation element disc.
  • the blocking device must act only on the compensation element disc, which can also offer constructive advantages.
  • the blocking device is arranged stationarily in the elevator installation.
  • the blocking device for generating the clamping force in the compensation element along the elevator shaft, in particular in the vertical direction is arranged movably in the elevator installation.
  • the clamping force in the compensation element can be generated by the movement of the blocking device, without the traction means having to generate a tensile force in the suspension element. It is sufficient in this case, when the support means eg fixed to the drive means or to another blocking device, that is blocked.
  • the blocking device can be designed, for example, as a separate braking device, which can be moved in the elevator shaft in a preferably vertical direction, with a brake shoe for the compensation element.
  • the compensating element disc forms part of the blocking device.
  • the entire blocking device in the region of the shaft bottom, for example via a hydraulic device in a preferably vertical direction to be arranged movable.
  • the invention further relates to a method for positioning an elevator car in a desired position in an elevator installation, in particular in an elevator installation as described herein an elevator shaft in which the elevator car can be moved, wherein preferably the elevator shaft is arranged vertically and the elevator car can be moved in the vertical direction, and a suspension element which is connected to the elevator car and guided by a drive means to a counterweight.
  • the elevator installation comprises a compensation element, which is connected to the elevator car and guided to the counterweight, and a blocking device with which the compensation element in the elevator installation can be fixed in such a way that a clamping force can be generated in the compensation element when the compensation element between the elevator car and the blocking device is fixed is.
  • the compensation element is fixed to the elevator car.
  • a desired position is a vertical position of the elevator car, in which the tread surface of the elevator car is substantially aligned with the floor level.
  • a substantially stepless transition i. largely without height offset, guaranteed between the tread of the elevator car and a walk-in floor of the floor.
  • the clamping force generated in the compensation element is dimensioned such that at all permissible loading conditions of the elevator car, in particular without tracking the clamping force, at least one residual clamping force remains in the compensation element.
  • permissible load states relate to a permissible maximum load that can be conveyed with the elevator car. These loading conditions are e.g. elevator-specific and may vary from case to case.
  • the setting of the compensation element by the blocking device when the elevator car is in a different position from the desired position intermediate position.
  • the elevator car can be positioned from the intermediate position to the desired position when generating the clamping force.
  • intermediate position may denote both a stop position in which the elevator car is first stopped before the clamping force is generated and the elevator car is positioned in the desired position. is defined.
  • the intermediate position can also be a momentary driving position in which the compensation element of the blocking device, for example, also continuously braking, is set before the target position is reached.
  • the generated clamping force can correspond to a predetermined or desired pretension.
  • the clamping force is generated in the compensation element, in particular only in that the elevator car is positioned via the support means, in particular by the drive means of the elevator system, from the intermediate position to the desired position.
  • This is advantageous in particular in the case of blocking devices arranged in a stationary manner in the elevator installation, but is nevertheless not limited to these blocking devices which are arranged in a stationary manner in the elevator installation.
  • the clamping force in the compensation element is therefore generated, in particular solely in that the elevator car is positioned via the compensating means, in particular by relative displacement of the blocking device to the elevator car, from the intermediate position to the desired position.
  • both a tensile force is simultaneously exerted via the suspension element and by the blocking device via the compensation element.
  • the intermediate position differs from the desired position by a vertical distance d, which is defined as:
  • GQ represents the maximum permissible mass with which the elevator car may be loaded.
  • GQT is the mass with which the elevator car is currently loaded and L u denotes the length of the compensation element between the elevator car and the blocking device, g denotes the gravitational acceleration.
  • the clamping force in the compensation element in particular to zero, is reduced.
  • Transport journey here refers to a journey of the elevator car, which serves for the transport of goods or people. The transport travel is thus to be distinguished from a leveling travel, as it takes place, for example, in the positioning of the elevator car from the intermediate position to the desired position.
  • the method for positioning an elevator car in a desired position can only be performed during load driving. These may e.g. be specifically activated by a user.
  • a method for operating the elevator installation described here therefore comprises the step of selectively activating or deactivating the method described here for positioning an elevator cage in a desired position.
  • Fig. 1 an elevator system with a blocking device
  • Fig. 5a-5c the unloading of the elevator car in the desired position according to Fig. 4c;
  • FIG. 1 shows an elevator installation 1 with an elevator cage 2 in a vertical elevator shaft 3.
  • the elevator cage 2 is supported by a suspension element designed as a suspension cable 4 and anchored to the elevator cage 2.
  • the support cable 4 is in the shaft head via a traction sheave 5 of a drive system of Elevator system 1 out. From the traction sheave 5, the support cable 4 is guided via a deflection roller 6 to a counterweight 7 and anchored thereto. With the drive system, the elevator car 2 via the support cable 4 in the vertical direction in the elevator shaft 3 can be moved. From the elevator car 2, a compensating element designed as compensation rope 8 extends to the counterweight 7 and is anchored thereto.
  • the compensation cable 8 extends down from the counterweight 7 in the elevator shaft 3 and is guided in the shaft bottom via a compensating element disk designed as a deflection roller 9.
  • the compensation cable 8 is guided in the further course from below to the elevator car 2 and anchored thereto.
  • the compensating rope 8 compensates for the weight of the supporting cable 4, which shifts between the side of the elevator car 2 and the counterweight 7 due to the opposite procedure of the elevator car 2 and the counterweight 7 in the elevator shaft 3.
  • a floor level 11 is defined herein as the vertical height of a walk-in area of the floor. If the elevator car 2 is located in a position designated as desired position A in one of the shaft doors 10, a tread surface 12 of the elevator car 2 is arranged at substantially the same vertical height as the corresponding floor level 11. It is understood that target position A can also denote any other desired position in which the elevator car 2 should be as accurately as possible moved.
  • a blocking device 13 is arranged stationarily in the elevator shaft 3.
  • the blocking device 13 has brake shoes 14, between which the compensation cable 8 runs. With the blocking device 13, the compensation rope 8 can be fixed in the area of the blocking device 13 with respect to the elevator installation 1.
  • Figures 2a - 2c show the positioning of the elevator car 2 in the target position A with an empty elevator car 2 in the elevator system 1.
  • the elevator car 2 is first moved to an intermediate position B, in which the tread 12 arranged by a vertical distance d below the floor level 11 is (Fig. 2a).
  • the compensation element 8 is released by the blocking device 13, i. is not set by this.
  • the distance d is preferably calculated according to the formula
  • GQ represents the maximum permissible mass with which the elevator car 2 may be loaded.
  • GQT is the mass with which the elevator car 2 is currently loaded (in Fig. 2a-2c thus equal to zero) and L u denotes the length of the compensation rope 8 between the elevator car 2 and the blocking device 8.
  • g denotes the gravitational acceleration.
  • the compensation cable 8 is fixed by the blocking device 13 (FIG. 2b). In this way, a compensation rope section 16 between the elevator car 2 and the blocking device 13 is defined.
  • the traction sheave 5 of the elevator drive a tension force is generated in the support cable 4 in the sequence, i. the traction sheave 5 drives the carrying cable 4 upwards analogously to a transport movement of the elevator car 2 until the elevator car 2 has moved by the vertical distance d from the intermediate position B into the desired position A (leveling travel).
  • the tread 12 is on the same vertical
  • the support cable 4 and the compensating rope 8 are prestressed in the area between the blocking device 13 and the traction sheave 5.
  • the compensation rope 8 is biased in the compensation rope section 16 between the blocking device 13 and the elevator car 2 with the clamping force thus generated.
  • the clamping force in Kompensationsseilabites 16 is reduced. This is done via the traction sheave 5 of the elevator drive, i. the traction sheave 5 drives the carrying cable 4 downwards analogously to a transport movement of the elevator car 2 until the clamping force is reduced substantially to zero. This means that the traction sheave 5 allows controlled relaxation of the support cable 4. Only then is the blocking device 13 released (see FIG. 3c) and the compensating rope 8 released. The elevator car 2 can now have another setpoint position e.g. drive to another floor.
  • FIGS. 4a - 4c show the approach of the target position A in an elevator car 2 loaded with a mass m in the elevator installation 1.
  • the elevator car 2 is moved to an intermediate position B ', in which the tread 12 by a vertical distance d ⁇ below the floor level 11 is arranged (Fig. 4a).
  • the further steps of setting the compensation rope 8 (see FIG. 4b) and the leveling travel to the desired position A are analogous to the unloaded state of the elevator car 2 (see FIGS. 2b and 2c).
  • FIGS. 6a-6b show the positioning of the elevator car 2 in the setpoint position A when the elevator car 2 is empty in a further embodiment of an elevator installation 15.
  • the deflection roller 9 is arranged displaceably in the elevator installation 15 in the vertical direction.
  • the deflection roller 9 is formed as part of the blocking device 13 such that the compensation rope 8 can be fixed thereto.
  • the vertical displacement takes place for example via a hydraulic device (not shown).
  • the elevator car 2 is first moved into an intermediate position B ", in which the tread surface 12 is arranged at a vertical distance d above the floor level 11.
  • the distance d is also calculated in this case according to the above formula
  • the compensating rope 8 is fixed to the deflection roller 9 and moved downwards (see Fig. 6b)
  • the prestressing is generated in the compensation cable section 16 between the deflection roller 9 and the elevator car 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Elevator Control (AREA)

Abstract

L'invention concerne une installation d'ascenseur (1, 15), comprenant une cage d'ascenseur verticale (3), une cabine d'ascenseur (2), déplaçable, en direction verticale, dans la cage d'ascenseur (3), un moyen porteur (4), qui est relié avec la cabine d'ascenseur (2), et qui est guidé, via un moyen d'entraînement (5), vers un contrepoids (7), ainsi qu'un élément de compensation (8), qui est relié avec la cabine d'ascenseur (2), et qui est guidé vers le contrepoids (7). L'invention est caractérisée en ce qu'il est prévu un dispositif de blocage (13), au moyen duquel l'élément de compensation peut être fixé dans l'installation d'ascenseur (1, 15), de façon que lorsque l'élément de compensation (8) est fixé entre la cabine d'ascenseur (2) et le dispositif de blocage (13), une force de tension soit produite dans l'élément de compensation (8). L'invention concerne en outre un procédé de positionnement d'une cabine d'ascenseur (2) dans une position de consigne (A), dans une installation d'ascenseur (1, 15).
EP14702552.2A 2013-02-04 2014-01-31 Élément de compensation présentant un dispositif de blocage Withdrawn EP2951116A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14702552.2A EP2951116A1 (fr) 2013-02-04 2014-01-31 Élément de compensation présentant un dispositif de blocage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13153798 2013-02-04
PCT/EP2014/051881 WO2014118315A1 (fr) 2013-02-04 2014-01-31 Élément de compensation présentant un dispositif de blocage
EP14702552.2A EP2951116A1 (fr) 2013-02-04 2014-01-31 Élément de compensation présentant un dispositif de blocage

Publications (1)

Publication Number Publication Date
EP2951116A1 true EP2951116A1 (fr) 2015-12-09

Family

ID=47709936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14702552.2A Withdrawn EP2951116A1 (fr) 2013-02-04 2014-01-31 Élément de compensation présentant un dispositif de blocage

Country Status (5)

Country Link
US (1) US20150368068A1 (fr)
EP (1) EP2951116A1 (fr)
CN (1) CN104995117B (fr)
AU (1) AU2014211373B2 (fr)
WO (1) WO2014118315A1 (fr)

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EP3048076B1 (fr) * 2015-01-21 2017-04-19 KONE Corporation Outil de levage de câble et agencement de levage de câble
EP3176122A1 (fr) * 2015-12-02 2017-06-07 Siemens Aktiengesellschaft Procede de commande d'une machine d'extraction, machine d'extraction et dispositif de commande d'entrainement d'une machine d'extraction
US10144616B2 (en) * 2016-06-10 2018-12-04 Otis Elevator Company Cab for vertical travel with controllable orientation for non-vertical travel
JP7042207B2 (ja) * 2018-12-21 2022-03-25 株式会社日立製作所 エレベーターおよびエレベーターの制御方法

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US20090229922A1 (en) * 2007-09-14 2009-09-17 Smith Rory S System and Method to Minimize Rope Sway in Elevators

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US1789008A (en) * 1927-03-01 1931-01-13 Otis Elevator Co Elevator safety system
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US5277276A (en) * 1992-10-07 1994-01-11 Otis Elevator Company Compensating rope sheave tie down
US6860367B1 (en) * 1998-09-29 2005-03-01 Otis Elevator Company Elevator system having drive motor located below the elevator car
JP4347293B2 (ja) * 2003-05-30 2009-10-21 オーチス エレベータ カンパニー エレベーターシステムのタイダウン式補償
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JP4641738B2 (ja) * 2004-05-07 2011-03-02 三菱電機株式会社 エレベーター装置
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BRPI0821212A2 (pt) * 2007-12-21 2015-06-16 Inventio Ag Elevador com duas cabines e um contrapeso conjunto
CN102066227B (zh) * 2008-06-19 2013-10-16 因温特奥股份公司 具有下拉紧机构的电梯设备
KR101324603B1 (ko) * 2009-07-29 2013-11-01 오티스 엘리베이터 컴파니 로프 인장 조정을 통한 로프 흔들림 완화
JP2011073836A (ja) * 2009-09-30 2011-04-14 Hitachi Ltd ロープ式エレベータ装置
JP2012153507A (ja) * 2011-01-27 2012-08-16 Toshiba Elevator Co Ltd エレベータおよびエレベータの非常時運転方法

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Title
See also references of WO2014118315A1 *

Also Published As

Publication number Publication date
CN104995117A (zh) 2015-10-21
WO2014118315A1 (fr) 2014-08-07
AU2014211373B2 (en) 2017-04-27
CN104995117B (zh) 2017-04-12
US20150368068A1 (en) 2015-12-24
AU2014211373A1 (en) 2015-08-20

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