EP1866229A1 - Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre - Google Patents

Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre

Info

Publication number
EP1866229A1
EP1866229A1 EP06705407A EP06705407A EP1866229A1 EP 1866229 A1 EP1866229 A1 EP 1866229A1 EP 06705407 A EP06705407 A EP 06705407A EP 06705407 A EP06705407 A EP 06705407A EP 1866229 A1 EP1866229 A1 EP 1866229A1
Authority
EP
European Patent Office
Prior art keywords
belt
support
drive means
elevator car
detector
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.)
Granted
Application number
EP06705407A
Other languages
German (de)
English (en)
Other versions
EP1866229B1 (fr
Inventor
René Kunz
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 EP06705407.2A priority Critical patent/EP1866229B1/fr
Publication of EP1866229A1 publication Critical patent/EP1866229A1/fr
Application granted granted Critical
Publication of EP1866229B1 publication Critical patent/EP1866229B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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

Definitions

  • the invention relates to a method for detecting the state of an elevator car according to the preamble of
  • a carrier / drive means (carrying cable, carrying strap) with markings and to scan these markings.
  • An example can be found in the patent publication WO 2004/106209 A.
  • a detector is located at a fixed reference point in the shaft while the support / drive means passes the markers past the detector.
  • the detector is fixed in the region of the drive pulley of the drive unit.
  • the solution described above has the disadvantage that it comprises a detector mounted in the region of the drive unit of a machine room-less elevator. On the one hand, this is difficult to achieve for troubleshooting and / or maintenance work, and on the other hand interference fields are present in the area of a modern frequency converter-fed drive unit, which impair the reliability of the detector.
  • the object of the invention is therefore to propose a method and an elevator system of the type mentioned, which do not have the disadvantages described.
  • the object is achieved by a method for detecting the state of an elevator car or an elevator installation, in which markings are detected on a belt-type support / drive means with the aid of at least one detector, wherein the belt-like support / drive means moves during the Ride the elevator car relative to this moves.
  • the detector moves with the elevator car, with the belt-like support / drive means, which carries or moves the elevator car, passing the detector.
  • the detection of the state of an elevator car involves the detection of at least one of the following states: the position of the elevator car in the elevator shaft, the direction of travel, the instantaneous driving speed, the acceleration.
  • the aforementioned states of the elevator car are determined by the device according to the invention independently of a possible slip in the power transmission between a traction sheave of a drive unit and the support / drive means.
  • the method according to the invention or the elevator installation according to the invention have the advantage that a means already present in the elevator shaft, the belt-like support / drive means, can be used for the condition detection of the elevator car.
  • the moving with the elevator car detector is easily accessible for troubleshooting and / or maintenance, depending on its placement on the elevator car from the roof of the elevator car or from a pit.
  • it is placed in this way outside of an area in which interference fields of a frequency converter or a frequency converter supplied drive unit can affect the reliability of the detector.
  • the markings on the belt-like support / drive means are designed so that the instantaneous position and / or the instantaneous speed and / or the acceleration of the elevator car can be recognized by the scanning of the markings.
  • This has the advantage that no additional installations in the elevator shaft for determining the position and / or the speed of the elevator car must be made. As a result, the cost of installation and maintenance can be kept low.
  • this is the elevator car carrying belt-like support / drive means reeved several times (eg 2: 1, 3: 1, 4: 1
  • the detector scans the marks of a portion of the support / drive means which leads from the area of a carrying roller underlayment on the elevator car directly to a fixed point of the support / drive means.
  • This firstly ensures that the path by which the detector shifts with respect to the markings on the support / drive means corresponds to the travel path of the elevator car at each shunting ratio of the cabin suspension. It can therefore at all Einscherungs conductedn the same device for detecting the state of the elevator car - d. H. the same markings (or the same coding), the same detector and the same evaluation device - be used.
  • the markings are scanned in a region of the carrier / drive means which has the smallest possible distance to a fixing point of the carrier / drive means and, during operation of the elevator, runs least often via a carrying roller or the traction sheave of the drive unit and therefore its original one
  • Length and its elongation properties are the longest. Both features contribute to the improvement of the accuracy and the reproducibility of the detection of the position of the elevator car.
  • the length of the belt-like support / drive means can change as a result of the current load on the elevator car.
  • This change in length (elongation) can be compensated in the state detection.
  • the elongation of the carrying / driving means can be determined and its influence on the condition detection computationally compensated.
  • the aging-related strain and / or a temperature-induced change in length of the belt-like support / drive means in the state detection can be taken into account (compensated) by the information of a preferably installed in the area of the ground floor signal generator is included in the compensation calculation, the at each passing the Elevator car signals its exact location.
  • the belt-like support / drive means is guided past the detector in the region of a support roller loop of the elevator car so that a precisely defined scanning distance (effective distance), for example a distance of less than 20 mm, is ensured between the belt back and the detector.
  • a precisely defined scanning distance effective distance
  • the detector With the arrangement of the detector in the region of a support roller underlayment, disturbing influences on the condition detection caused by oscillating support / drive means are greatly reduced, so that the markings can be accurately scanned by the detector with the smallest possible scanning distance.
  • a device mounted below or above the elevator car which comprises one or two carrying rollers about which the carrier / drive means is guided in order to support and move the elevator car.
  • a corresponding number of such support roller underleavings are respectively present on the elevator car.
  • the belt-like support / drive means has a belt front side and a belt rear side, wherein the belt rear side has the markings and not with drive or carrier len of the elevator system comes into contact.
  • the belt-like support / drive means is guided so that always only the belt front side comes into contact with the rollers.
  • the marks affixed to the back of the belt are not affected by the transmission of power between the traction sheave of the drive unit and the support / drive means and when idler rollers are circulated, i. H. Mechanical abrasion or mechanical stress and the contamination of the markings are thus minimized.
  • a belt with a row of teeth on the front side of the belt, a V-ribbed belt on the front side of the belt, a flat belt, a flat belt, a twin-rope or another carrier or belt is used as belt-like carrier / drive means Drive means used, which has two belt main surfaces.
  • Such belt-like support / drive means have the advantage that the two belt main surfaces can be designed differently.
  • the front side of the belt-like support / drive means which serves as a contact surface to the drive rollers or elevator rollers, have a means for increasing the traction or for guiding the belt-like support / drive means on the traction sheave or the support or deflection rollers ,
  • optical markings are mounted on the belt-like support / drive means and scanned by an optical detector, for example a reflection detector.
  • the markings are superficially mounted on the belt-like support / drive means. This has the advantage that the strength of the belt-like support / drive means is not impaired.
  • Visible tags provide a variety of low-cost ways to encode information or items.
  • magnetic markers are mounted on the belt-like support / drive means and scanned by a magnetic detector.
  • the markings can be mounted both on the surface and in the interior of the belt-like support / drive means.
  • a magnetic scanning system has the advantage that contamination, eg. By dust or oil, cause no interference. Also, the magnetic markings below the surface, and thus protected against mechanical stress, can be attached.
  • Particularly safe elevator controls can be realized if the markings form a coding which allows a direct detection of the absolute position of the elevator car (11). In comparison with incremental position and position detection, position and position detection using absolutely coded markings is less susceptible to interference. It is particularly advantageous that an absolute position and position detection in case of power failure does not lose the information about the current position of the elevator car. Information about the instantaneous speed and possibly the acceleration is derived from the existing position information by the controller.
  • the belt-like support / drive means between the traction sheave of the drive unit and the first support roller on the elevator car possibly also rotated between other support rollers along its longitudinal axis, in order to achieve that provided with the marks surface of the support / Drive means (here as belts called back side) is always turned away from the discs and rollers during rotation. This ensures that the markings are not destroyed as a result of abrasion or other mechanical stresses.
  • Fig. 1 is an elevator system according to the invention, in a simplified representation.
  • FIG. 2 is a detailed view of a winding roller under the elevator car with a belt and two markings in a simplified representation.
  • FIG. 3 shows an elevator installation according to the invention with 4-fold reeving of the support / drive means (4: 1 suspension of the elevator car) and two support roller underlays arranged below the elevator car
  • the invention relates in particular to elevator systems in which at least one belt with a drive and / or support function is used, which is driven by means of a drive unit, usually via a traction sheave, and moves and / or carries an elevator car.
  • a drive unit usually via a traction sheave
  • Such a belt is generally referred to below as a belt-like support / drive means.
  • the belt-type support / drive means is an elongate, flexible element having two substantially parallel ones
  • One of the belt major surfaces is preferably, but not necessarily, structured.
  • This belt main surface will be referred to as a belt front.
  • the structuring serves for the lateral guidance of the carrier / drive means on the pulleys and rollers and / or for increasing the traction capability.
  • the structure may for example consist of parallel belt ribs between which belt grooves are formed.
  • the belt grooves and belt ribs may be transverse to the belt longitudinal axis (in this case, the belt may be referred to as a toothed belt) or parallel to the belt longitudinal axis (in this case, the belt may be referred to as a V-ribbed belt, for example).
  • the belt-like support / drive means may comprise a belt body made of rubber or plastic, in which at least one plastic or steel cable is embedded as a traction means.
  • the second belt main surface will hereinafter be referred to as the belt rear side.
  • the belt back is an unstructured side of the belt.
  • markings are provided on or on the back of this belt, which are scanned by means of a detector in order to obtain information about the current position or to obtain the speed of the elevator car, as will be explained in more detail below with reference to various embodiments.
  • FIG. 1 shows an elevator installation 10 according to the invention with a belt-like support / drive means 14.
  • the belt-like support / drive means 14 couples different elements of the elevator installation 10 in terms of movement.
  • the essential elements of the elevator installation 10 will hereafter be necessary for an understanding of the invention are explained.
  • the support roller / drive means 14 is connected to a first fixed point 14.3 with a first vertical guide rail 7, then runs around the support roller / drive means 14 present on the elevator car for the support / drive means 14 and a counterweight carrying roller 5 Counterweight carrying roller 5, around the traction sheave 8, to the idler under loop 19 and to a second fixed point 14.4 in the region of the upper end of a second vertical guide rail 7.
  • the support / drive means 14 is double sheared, ie it forms a second : 1- suspension for the elevator car 11 and the counterweight 4.
  • the belt-like support / drive means 14 is between the traction sheave 8 and d he support roller 15 is rotated by approximately 180 ° about its longitudinal axis, while it is not rotated between the support roller 15 and the support roller 16.
  • the rotation ensures that always the (mostly structured) belt front side 14.1 is in contact with the peripheral surfaces of the traction sheave 8 and the support rollers 15 and 16.
  • a detector 13 is mounted below the bottom of the elevator car 11. Since in the constellation shown, the belt rear side 14.
  • the detector 13 is fastened below the carrier / drive means 14.
  • a U-shaped bracket 13.3 is mounted at the bottom of the elevator car, which carries the detector 13 and forms a recess through which the support / drive means 14 is passed in the region of the support roller loop 19.
  • the support / drive means moves horizontally in this area in the direction of the arrow 17, wherein its relative movement relative to the elevator car with respect to path, speed and acceleration of
  • the detector By scanning the marks on the back of the belt, the detector provides information to a controller, which determines the position, the speed and, if necessary, the acceleration of the elevator car.
  • the detection of the markings takes place in a section of the support / drive means 14, which extends from the region of the support roller underpass 19 directly to the fixed point 14.4. of the carrying / driving means leads.
  • Elevator system 10 is suitable rubbers and elastomers (plastics), in particular polyurethane (PU) and ethylene propylene copolymer (EPDM), in question.
  • the belt 14 may be provided with reinforcing inserts and / or net-like oriented in the longitudinal direction of the belt
  • Reinforcement inserts be equipped.
  • As reinforcing inserts oriented in the longitudinal direction of the belt for example, twisted steel wire strands are suitable.
  • Fig. 2 shows a possible embodiment of the invention with a belt-like support / drive means 14, on the back 14.2 optical markings 12 are provided on two parallel marking tracks.
  • the detector 13 is seated in the region of a carrying roller 16 of a carrying roller substructure 19 attached to an elevator car 11.
  • a carrying roller undercarriage comprises a single carrying roller, for example in a backpacking cabin or in a carrying roller underpass arranged above the cab roof.
  • the vertical position of the elevator car 11 in the elevator installation 10 can be determined more accurately, for example by having one marking track having a relatively low resolution absolute value coding and the other marking track having high pulses Position resolution for the interpolation between the absolute values of the first track.
  • Examples of such codings are the multi-track Gray code or a known single-lane coding, in which a plurality of successive code marks of different magnetic polarity or with different reflection properties in each case one
  • the markers 12 are composed of beams and / or lines arranged at right angles to the longitudinal axis of the support / drive means, which are mounted in high contrast, advantageously with light color on a dark belt-like support / drive means 14, or vice versa.
  • the optical markings 12 are scanned by an optical detector 13, advantageously by a reflection detector 13.
  • the detector 13 comprises an LED 13.1 and a photosensitive semiconductor 13.2 (for example a photodetector). It can also control LED 13.1 and light merge sensitive semiconductor 13.2 in one element.
  • the detector 13 is mounted at an effective distance Wl to the belt rear side 14.2.
  • Wl effective distance
  • Wl effective distance
  • Wl effective distance
  • Wl effective distance
  • the detector 13 is mounted on a printed circuit board 18 and is controlled and evaluated by additional electronic components via conductive connections.
  • the detector 13 can emit the light beam, the frequency of which does not have to be in the visible range, at any angle between 90 and 45 degrees to the belt rear 14.2 and receive it at the same angle.
  • a magnetic marking for example, to the belt-like support / drive means 14.
  • a mark can also be several tracks on the belt-like support / drive means 14 apply side by side.
  • the corresponding magnetic detector 13 reads the magnetic characteristics of the individual tracks, from which the exact vertical position and / or the speed of the elevator car 11 can be determined.
  • FIGS. 3 and 4 show diagrammatically elevator systems according to the invention, each with an elevator car 11 and a counterweight 4, a traction sheave 8 and a 4 times retracted carrier / drive means 14 with the required deflection rollers in a known arrangement (4: 1 suspensions for the Elevator car as well as for the counterweight).
  • a known arrangement (4: 1 suspensions for the Elevator car as well as for the counterweight).
  • two support roller underpasses 19 each with two support rollers 15, 16 are mounted below the cabin floor 11.1.
  • Fig. 4 show diagrammatically elevator systems according to the invention, each with an elevator car 11 and a counterweight 4, a traction sheave 8 and a 4 times retracted carrier / drive means 14 with the required deflection rollers in a known arrangement (4: 1 suspensions for the Elevator car as well as for the counterweight).
  • Elevator car 11 two support roller underpasses 19, each with two support rollers 15, 16 attached above the cab roof 11.2.
  • the elevator cars are suspended on two cable loops each of a support / drive means 14, wherein each of the cable loops underlays two support rollers 15, 16 of one of the two support underlaps 19.
  • the path or the speed of the running over the traction sheave 8 section (run) of the support / drive means 14 corresponds to four times the path or the speed of the moving elevator car.
  • the belt-like carrier / drive means 14 is also in the region of its between the traction sheave 8 and the first support roller on the elevator car section (strands) rotated by 180 ° about its longitudinal axis (not shown in FIGS. 3 and 4).
  • detectors are shown in FIG. 3 as well as in FIG. 4, which, as described above, scan marks on the belt rear side of the carrying / driving means 14 in the region of one of the carrying roller undercuts on the elevator car.
  • the scanning also takes place here at a portion (Trum) of the support / drive means, which extends from the region of a support roller loop directly to a fixed point 14.4 of the support / drive means 14, wherein said portion with a travel or a speed at the Elevator car 11 moves over, which corresponds to the travel or the travel speed of the elevator car.
  • the detector could also, as shown in Fig. 3 with dash-dot lines 13.1, directly to the vertical, to Be directed cabin-side fixed point 14.4 leading portion of the support / drive means 14.
  • This arrangement suffers from the disadvantage that transverse oscillations are more likely to occur in this region of the support / drive means. With an additional guidance of the support / drive means, however, this problem would be recoverable.
  • the detection of the vertical position of the elevator car 11 is distorted in the elevator system 10.
  • the weight of the elevator car 11, which changes as a result of different loading detected by a sensor and the influence of the cabin weight can be compensated by appropriate software in the elevator control.
  • a sensor may be, for example, a strain gauge, which is mounted in the region of a fixed point of the support / drive means.
  • more than one belt-type support / drive means can be arranged parallel to each other in running elevator systems.
  • either only one or for example two of the support / drive means can be provided with markings.
  • a second detector to provide a redundant position and / or speed signal to increase the reliability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Control Of Conveyors (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

Système (10) d'ascenseur pourvu d'une cabine (11), qui possède un moyen d'entraînement / de support (14) de type courroie comportant des repères (12) sur sa longueur. Un dispositif destiné à détecter au moins la position, éventuellement aussi la vitesse et l'accélération de la cabine d'ascenseur, possède, en vue du balayage des repères (12), un détecteur (13) qui est fixé à la cabine (11) d'ascenseur et qui se déplace avec cette dernière. Le détecteur est de préférence ainsi disposé qu'il détecte les repères (12) sur un segment du moyen d'entraînement / de support (14) qui s'étend de la zone de passage inférieur (19) autour d'un rouleau porteur situé sur la cabine (11) de l'ascenseur directement jusqu'à un point fixe (14.4) du moyen d'entraînement / de support (14).
EP06705407.2A 2005-03-22 2006-03-20 Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre Not-in-force EP1866229B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06705407.2A EP1866229B1 (fr) 2005-03-22 2006-03-20 Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05102308 2005-03-22
EP06705407.2A EP1866229B1 (fr) 2005-03-22 2006-03-20 Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre
PCT/CH2006/000167 WO2006099770A1 (fr) 2005-03-22 2006-03-20 Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre

Publications (2)

Publication Number Publication Date
EP1866229A1 true EP1866229A1 (fr) 2007-12-19
EP1866229B1 EP1866229B1 (fr) 2013-11-13

Family

ID=34939047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06705407.2A Not-in-force EP1866229B1 (fr) 2005-03-22 2006-03-20 Procede de detection de l'etat d'une cabine d'ascenseur et systeme d'ascenseur dans lequel ce procede est mis en oeuvre

Country Status (11)

Country Link
US (1) US7938233B2 (fr)
EP (1) EP1866229B1 (fr)
JP (1) JP2008532890A (fr)
CN (1) CN101155743B (fr)
AU (1) AU2006227082B2 (fr)
BR (1) BRPI0609321B1 (fr)
CA (1) CA2602660C (fr)
ES (1) ES2445621T3 (fr)
HK (1) HK1116462A1 (fr)
NO (1) NO20075329L (fr)
WO (1) WO2006099770A1 (fr)

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WO2014082258A1 (fr) * 2012-11-29 2014-06-05 Otis Elevator Company Récupération de position via des modèles de paliers factices
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EP3085653B1 (fr) * 2015-04-24 2019-04-10 KONE Corporation Élévateur
WO2017033312A1 (fr) * 2015-08-26 2017-03-02 三菱電機株式会社 Dispositif de mesure de distance de mouvement d'ascenseur et procédé de mesure de distance de mouvement d'ascenseur
CN109720964A (zh) 2017-10-27 2019-05-07 奥的斯电梯公司 电梯牵引系统以及电梯系统
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Also Published As

Publication number Publication date
US7938233B2 (en) 2011-05-10
CA2602660C (fr) 2014-07-15
NO20075329L (no) 2007-12-19
BRPI0609321B1 (pt) 2017-12-26
BRPI0609321A2 (pt) 2010-03-16
AU2006227082B2 (en) 2011-07-21
US20080283343A1 (en) 2008-11-20
ES2445621T3 (es) 2014-03-04
CN101155743A (zh) 2008-04-02
JP2008532890A (ja) 2008-08-21
HK1116462A1 (en) 2008-12-24
EP1866229B1 (fr) 2013-11-13
WO2006099770A1 (fr) 2006-09-28
CA2602660A1 (fr) 2006-09-28
CN101155743B (zh) 2012-02-08
AU2006227082A1 (en) 2006-09-28

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