EP1404603A1 - Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation - Google Patents

Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation

Info

Publication number
EP1404603A1
EP1404603A1 EP02740187A EP02740187A EP1404603A1 EP 1404603 A1 EP1404603 A1 EP 1404603A1 EP 02740187 A EP02740187 A EP 02740187A EP 02740187 A EP02740187 A EP 02740187A EP 1404603 A1 EP1404603 A1 EP 1404603A1
Authority
EP
European Patent Office
Prior art keywords
elevator
control device
special
operating mode
shaft
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
EP02740187A
Other languages
German (de)
English (en)
Other versions
EP1404603B1 (fr
Inventor
Romeo Deplazes
Philipp Angst
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 EP02740187A priority Critical patent/EP1404603B1/fr
Publication of EP1404603A1 publication Critical patent/EP1404603A1/fr
Application granted granted Critical
Publication of EP1404603B1 publication Critical patent/EP1404603B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B66B5/0043—Devices enhancing safety during maintenance

Definitions

  • An elevator installation normally comprises an elevator car, an elevator shaft in which the elevator car moves, and a drive unit for moving the elevator car.
  • an elevator system is also designed in such a way that there is a protective space at the top of the shaft - called the shaft head - so that maintenance personnel who carry out maintenance on the roof of the cabin are not endangered if the cabin moves to the uppermost position in the shaft ,
  • elevator dispositions such as rope lifts, hydraulic lifts, linear motor lifts, etc.
  • the shelter at the lower end of the shaft nowadays typically has a height of 50 cm plus the length of the maximum compressed buffers that are on the bottom of the shaft located to cushion the counterweights or the elevator car.
  • An elevator system with a shelter at the bottom and at the top of the shaft is a few meters longer than the actual storey height of the building, which is served by the elevator. This often leads to solutions in which the elevator shaft towers over the building.
  • part of the drive unit was usually installed in a machine room above the shaft, which means that either the elevator system was dimensioned in such a way that the top floor was not operated because the machine room and protective room were located here, or the machine room was located complete with protective space on the roof of the building.
  • EP 1052212-A describes a device which allows work to be carried out in an elevator shaft. According to this patent application, a protective space is realized at the upper end of the shaft by prematurely stopping the counterweight at the lower end of the shaft. As a result, the cabin - which is connected to the counterweight via a cable system - cannot be moved up to the shaft head.
  • Lift shaft stops Sensors on the shaft doors determine whether a person is in the lift shaft.
  • the cabin ends to prevent the cabin from entering the shelter.
  • Another task is to improve the safety of maintenance personnel.
  • the inventive elevator system and the corresponding method provide, depending on the embodiment of 'various advantages such as a better building or
  • Elevator systems according to the invention are also better suited for particularly representative buildings and facilities, since they can be better integrated architecturally into an overall concept because of the shorter construction of the shaft. This is particularly important for free-standing elevator systems.
  • the elevator installation according to the present invention is characterized by shorter dead times, since the operation is maintained, albeit to a limited extent, during maintenance.
  • Fig. 1 a conventional elevator system in section
  • Fig. 2 an elevator system according to the invention in section
  • Fig. 3 the safety bus of an elevator installation according to the invention as a block diagram
  • Fig. 4 the safety bus of a further elevator installation according to the invention as a block diagram
  • Fig. 5 is a schematic flow diagram according to an embodiment of the present invention.
  • Fig. 6 is a diagram according to another embodiment of the present invention.
  • FIG. 7 shows a schematic flow diagram according to a further embodiment of the present invention
  • 8 shows a schematic flow diagram according to a further embodiment of the present invention.
  • the present invention is essentially independent of the type of elevator disposition or of the one used
  • FIG. 1 A conventional elevator installation 10 is shown in FIG. 1.
  • the system 10 shown comprises a shaft 11 with a cabin 12 which can move to different storey levels 13.1 to 13.
  • the drive unit comprises the cable 14.1, the rollers or suspensions 14.2 to 14.6, the drive motor (not shown) and the control unit for controlling the drive motor (not shown).
  • At the lower end of the shaft there is a shaft pit 15, which serves as the lower protective space.
  • a protective space 16 is provided at the upper end of the shaft so as not to endanger a person 17 who is on the roof of the cabin 12.
  • FIG. 2 A system 20 according to the invention is shown in FIG. 2.
  • the system 20 has an elevator car 21 which can be moved in an elevator shaft 22, as indicated by the double arrow 23.
  • the shaft 22 shown serves four storey levels 24.1 to 24.4.
  • the cabin 21 is driven by a drive unit 25.
  • the drive unit 25 comprises a control unit 26 and a motor 27.
  • the control unit receives input signals via an input 28, for example from an operator keyboard (not shown) in the cabin 21.
  • the control unit 26, depending on the input signals, specifies a corresponding speed curve and regulates the motor 27 accordingly.
  • the speed curve can be specified, for example, in the form of setpoints which are compared with the current actual values. If there are deviations between the actual and target values, a control loop intervenes to make corrections.
  • the control unit 26 controls the car 21 so that it can - depending on the requirement - stop on the different floors.
  • the elevator system 20 has a detection device 29 which detects whether a person is in a critical zone of the shaft 22 stops, or whether a person is about to enter a critical zone of the shaft 22.
  • Critical zones are either the end zone 32 at the lower end of the shaft and / or the end zone 33 at the upper end of the shaft
  • shaft head To detect access to the shaft head, the detection of the presence of a person on the cabin roof or their access to the cabin roof is preferably used.
  • the detection device 29 is connected to the drive unit 25 in such a way, for example via a line or a bus 31, that the elevator installation 20 can be converted into a special operating mode if a person is in the critical zone or is about to enter it
  • the drive unit 25 comprises a special control device 30 which can be integrated in the control unit 26 and which in the special Operating mode the elevator car stops, at the latest before it enters critical zone 32 and / or 33.
  • the detection device 29 and the special control device 30 are designed to be safety-relevant in order to prevent the elevator car 21 from entering the critical zone 32 and / or 33 under all circumstances.
  • the special control device 30 preferably enables undisturbed operation of the elevator car 21 in a zone outside the critical zone 32 and / or 33 during the special operating mode. In the example shown, the elevator car 21 can continue to operate the storey levels 24.2 and 24.3, for example, in the special operating mode.
  • safety-relevant is to be understood to mean that it is an elevator system that is reliable and, in particular, operationally reliable, for example because the essential components. are redundant, important functions of the control device (30; 42) run in parallel and their results are compared with one another and the data is transmitted via parallel lines or known methods for transmission error detection are used for this.
  • a virtual protection zone on the shaft floor and / or on the shaft head is created at the latest when entering a critical zone 32 and / or 33.
  • the virtual protection zone must be absolutely secure in order to prevent the endangerment of persons or even personal injuries. Only if this is guaranteed can a shaft pit or an upper shelter be dispensed with.
  • Particularly suitable as detection device 29 are light barriers, light grids, pressure mats, motion detectors, occupancy detectors, security locks, door contacts, input units, operating mode selector switches, etc.
  • the detection device 29 is designed and arranged in such a way that it is recognized whether a person has a critical zone 32 and / or or 33 wants to enter, or has entered.
  • a plurality of sensors are linked or combined to form a detection device 29 in order to improve the detection or detection accuracy and to make it more reliable.
  • the detection device 29 supplies one or more signals or information to the special control device 30.
  • the special control device 30 is linked to the control unit 26 or integrated into it in such a way that an immediate switchover to the special operating mode takes place automatically.
  • the elements of the detection device can be arranged at different locations inside or outside the shaft 22 and / or on the cabin 23.
  • detection device 29 It is advisable to design the detection device 29 separately and independently of the usual sensors and control means of the elevator installation 20 in order to ensure increased safety.
  • the connection between the detection device 29 and the special control device 30 should also be carried out autonomously by other systems, or special security measures should be taken.
  • a peripheral bus can be used, as is known from US Pat. No. 6,173,814. Such an embodiment is shown in FIG. 3.
  • The. Sensors 40.1, 40.2 and 40.3 of a detection device 43 are connected to the nodes of a safety bus 41.
  • the nodes are shown in schematic form as points.
  • a controller 44 is located in the special control device 42 or is linked to the special control device in order to process and evaluate signals received via the safety bus 41.
  • the special control device 42 can be designed to be programmable so that one can make certain adjustments and later updates. Rules can be specified that lead to switching to the special operating mode. Great importance is attached to the greatest possible security, as shown in the following example.
  • the detection device 43 comprises three motion sensors 40.1, 40.2 and 40.3.
  • the following rule can be established:
  • OR sensor 40.2 If sensor 40.1, OR sensor 40.2, OR sensor 40.3 detects movement
  • the system then automatically switches to the special operating mode.
  • a light barrier 40.4 is also provided on the lowest shaft door, as shown in FIG. 4. The following rule can be established:
  • the system If the light barrier 40.4 detects that a person is walking through the shaft door, AND if the sensor 40.1, OR the sensor 40.2, OR the sensor 40.3 detects a movement,. , , the system then automatically switches to the special operating mode.
  • Curve 51 shows in FIG. 5 how a conventional elevator can be controlled.
  • Curve 51 shows the speed as a function of the path x which the elevator travels.
  • the path length corresponds to the distance between the lowest and the highest floor level that the elevator serves. Both when starting up and when braking the elevator car, the drive is controlled so that low acceleration forces occur.
  • Curve 51 is a speed setpoint curve for a journey over the maximum travel path of the elevator car, for example for a journey from the floor above the shaft pit to the floor below the shaft head.
  • a speed setpoint curve can of course, depending on the travel order, only be generated over one floor distance or a few floor distances.
  • an elevator system is equipped with measuring sensors which continuously measure actual values of car position and car speed and pass them on to the control unit (for example the control unit 26 in FIG. 2). The actual speed values are then compared with the desired speed values. From this, the control unit determines whether it is necessary to accelerate further, whether the elevator can continue to be driven at the current speed or whether it is necessary to brake.
  • the elevator system automatically switches to a special operating mode as soon as someone is in the shaft or intends to enter the shaft.
  • a system according to the invention is characterized in that the special operating mode enables a self-sufficient influencing of certain control variables.
  • the special control device 30 follows the actual control unit 26 of an elevator system, in such a way that the special operating mode always has priority over the normal operating mode.
  • the mode of operation of an advantageous embodiment is shown in FIG. 5.
  • the speed setpoint curve 51 for the maximum possible travel path of the elevator is shown in the top box.
  • the braking process is initiated at a certain point to bring the elevator car to a gentle stop.
  • a curve is usually a speed setpoint curve.
  • the drive unit of the elevator is controlled by an actual value control in such a way that the actual speed values correspond as closely as possible to the predetermined speed setpoint curve.
  • Elevator system recognizes that it is necessary to switch to the special operating mode, as represented by box 55 in FIG. 5, and the drive unit is actuated differently.
  • the elevator system as indicated by curve 52.
  • the route area to which the maximum speed setpoint curve refers is reduced by the shaft areas to be protected. If there is no switchover to the special operating mode, the speed setpoint curve 51 continues to be used.
  • the speed setpoint curve 51 is adapted to the operating mode. If the elevator system is in the normal operating mode, the speed setpoint curve 51 is used. In contrast, in the special operating mode, the distance that the elevator car can cover is shortened to a maximum. This is shown schematically by curve 52 in FIG. 5. In the example shown, the characteristic course of the speed curve is also used. This means that the elevator car is accelerated and braked as in normal operation. The normal speed v n also remains unchanged in the example shown. By shortening the distance, two virtual protection zones 53 and 54 are created on the shaft foot and on the shaft head. In the example shown, the height of the two virtual protection zones 53 and 54 is 2 m each.
  • Such an embodiment, which only provides one virtual protection zone 62 at a time, can be used if the detection device is designed in such a way that it can distinguish whether a person is in the lower or upper shaft area. holds up, or is about to enter the lower or upper shaft area.
  • the maximum speed v max can be reduced in the special operating mode in order to avoid endangering the service personnel. This can be important, for example, if service personnel are on the roof of the elevator car.
  • both measures are used.
  • the virtual protection zone 62 at the lower end of the shaft is 1.5 m, which, depending on the structural conditions, can be sufficient as a protection zone.
  • a special control device can be used which independently takes over control of the drive control during the entire duration of the special operating mode ,
  • the speed setpoint curve active in the normal operating mode is not assumed, but the special control device specifies a suitable curve.
  • a curve can be taken from a memory or generated from a table with parameters or with setpoints. If the elevator system is in the special operating mode, so In the currently described embodiment, the special control device takes over control of the drive control.
  • a control mechanism is typically used, which measures the actual values on the elevator system and compares them with the target values in order to determine control variables for the drive control.
  • the special operating mode includes the restriction of the travel area of the elevator car
  • their position and preferably also their speed are monitored at any time in a safety-relevant manner, so that when the elevator car enters a protection zone, the braking operation provided can be triggered immediately. Stopping is preferably initiated for the time being by controlled braking of the drive. If there is insufficient deceleration of the elevator car is in a short test time, for example by means of waste Let of protecting the driving and braking control, an emergency stop by interrupting the power supply to the drive motor and an electrically operated means for 'holding open the drive brake actuated. If the detected braking curve is still insufficient, the safety brakes of the elevator car can be activated after a further short test period.
  • FIG. 9 shows a further embodiment variant of an elevator system with a travel area restricted in the special operating mode.
  • Sensors 91, 92, 93 are mounted in the elevator shaft 90 in such a way that they can detect the entrance of the elevator car 94 into the respective protection zone. They are only activated in the special operating state and solve when detected. , the elevator car stopped.
  • a first sensor 91 for example, can trigger the stop with a controlled drive
  • a second sensor 92 can trigger the emergency stop described above
  • a third sensor 93 which is spaced apart from the second, can activate the safety brake 95 of the elevator car.
  • the sensors 91, 92, 93 described above are actuated only in the special operating state, in that a runner 96 is attached to the elevator car in such a way that it can only be extended and extended State the sensors are actuated.
  • the runner is extended in the special operating state, which can be done, for example, by an electromagnetic actuator.
  • the special control device is designed or can be influenced by the maintenance personnel in such a way that the elevator system is shut down immediately upon transition to the special operating state.
  • This is a moving elevator car stopped immediately by interrupting the power supply to the drive motor and to an electrically operated device for keeping the drive brake open, which can be caused, for example, by dropping contactors of the drive and brake control.
  • the safety brakes on the elevator car can additionally be activated after a short test time if the resulting braking reaction is detected as insufficient.
  • the special control device In order to make the system according to the invention relevant to safety, it is advisable to design the special control device in such a way that the system automatically switches to the special operating mode as soon as a condition or behavior pattern is detected by the detection device, which indicates that a person is in the shaft or is about to get into it.
  • the elevator system is designed in such a way that any state that cannot be clearly interpreted by the special control device leads to the system automatically being switched to the special operating mode.
  • the special operating mode can only be exited again after further measurement values have been obtained from the detection device or after manual entry. This measure further increases the safety of the elevator system.
  • Elevator systems according to the present invention can be changed or adapted by equipping the detection device with input means which enable the service personnel to control the elevator system. manually influenced while they are in the virtual protection zone.
  • the corresponding input means should be designed so that the virtual protection zones are not adversely affected by the elevator car.
  • the input means can comprise, for example, a card reader through which the service personnel authenticate themselves.
  • a control unit can be located next to the card reader, via which the service personnel can influence the elevator control.
  • the service personnel can be equipped with a portable data processing unit, for example in the form of a portable computer or a personal digital assistant (PDA).
  • the data processing unit can be coupled to the special control device via a cable connection or by radio or infrared in order to be able to influence the control of the elevator.
  • Another embodiment is characterized in that it comprises a display device that indicates whether the elevator is in the special operating mode.
  • the display can be visual, acoustic or by other suitable means. This further increases the security of the entire system, since the service personnel is informed by the display whether the switchover to the special operating mode has taken place without any problems.
  • Another elevator installation according to the invention comprises a card reader or a similar input unit which has to be operated by the service personnel before the elevator shaft is entered.
  • the special control device By actuating the input unit, the special control device is brought into a kind of alarm state. Is then from the registration device detects that someone really is stepping through the door to the shaft, the special operating mode is activated.
  • a corresponding logout can be carried out in order to return the elevator to the normal operating mode.
  • a method for operating an elevator installation according to the present invention is shown in the flow chart in FIG.
  • a first step (represented by box 71). 'It is recorded whether a person is in the elevator shaft or whether a person is about to get into it.
  • This step 71 is preferably carried out by a corresponding detection device which has one or more sensors or input means. If certain criteria are met that indicate or indicate that a person is in the elevator shaft or is about to enter it, the system switches to the special operating mode, as shown in box 74.
  • the signals from the detection device can still be used to obtain information about whether someone is still in one of the critical zones of the pull-out shaft. If this is not the case, a switch back to normal operation can take place, as indicated in boxes 75 and 76. It is advantageous to switch back with a certain time delay in order to increase safety.
  • the detection device should include corresponding components in the form of sensors and other detection means in order to enable a safe decision according to clear rules for all eventualities.
  • FIG. 8 shows that the detection device 80 can query several conditions in parallel.
  • three different conditions 1-3 are shown.
  • condition 1 can be formulated as follows:
  • condition 2 can be formulated as follows:
  • Condition 3 can be formulated as follows, for example: Is the light beam from a light barrier permanent or interrupted from time to time?
  • each of the conditions should trigger the switch to the special operating mode.
  • the step of switching is shown in box 82. If there is no switchover, the flowchart follows path 83 back to the point where the detection device is used for further monitoring.
  • the special control device is designed so that it is fail-safe. In other words, should there be a malfunction in the elevator system, it must be ensured at all times that the virtual protection zone (s) are preserved.
  • special safety circuits can be used, for example, which ensure that they can be switched to the special operating mode at any time.

Landscapes

  • Elevator Control (AREA)
  • Types And Forms Of Lifts (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Details Of Aerials (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne une installation d'ascenseur (20), qui comprend une cabine d'ascenseur (21), une cage d'ascenseur (22) et une unité d'entraînement (25). La cabine d'ascenseur (21) est installée dans la cage d'ascenseur (22) où elle peut se déplacer et elle peut être commandée par l'unité d'entraînement (25) de façon à pouvoir s'arrêter dans différentes positions, dans la cage d'ascenseur (22). La cage d'ascenseur (22) est pourvue d'un dispositif de détection (29) qui détecte si une personne se trouve dans une zone critique (32, 33) de la cage d'ascenseur (22) ou bien si une personne est sur le point d'arriver dans une telle zone. Ce dispositif de détection (29) est relié à l'unité d'entraînement (25) de telle sorte que l'installation d'ascenseur (20) puisse passer à un mode de fonctionnement spécial au cas où une personne se trouve dans la zone critique (32, 33) ou est sur le point d'y arriver. L'unité d'entraînement (25) comporte une unité de commande (30) spéciale qui, lorsque l'ascenseur fonctionne selon ledit mode spécial, arrête la cabine d'ascenseur (21) avant qu'elle ne pénètre dans la zone critique (32, 33). Le dispositif de détection (29) et le dispositif de commande (30) spécial présente une sécurité de fonctionnement telle que la pénétration de la cabine d'ascenseur (21) dans la zone critique (32, 33) est empêchée. Le dispositif de commande (30) spécial permet, lorsque l'installation fonctionne en mode spécial,un fonctionnement non perturbé de la cabine d'ascenseur (21) dans une zone extérieure à la zone critique (32, 33).
EP02740187A 2001-07-09 2002-07-03 Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation Expired - Lifetime EP1404603B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02740187A EP1404603B1 (fr) 2001-07-09 2002-07-03 Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01810673 2001-07-09
EP01810673 2001-07-09
PCT/CH2002/000363 WO2003008316A1 (fr) 2001-07-09 2002-07-03 Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation
EP02740187A EP1404603B1 (fr) 2001-07-09 2002-07-03 Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation

Publications (2)

Publication Number Publication Date
EP1404603A1 true EP1404603A1 (fr) 2004-04-07
EP1404603B1 EP1404603B1 (fr) 2006-02-15

Family

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Family Applications (1)

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EP02740187A Expired - Lifetime EP1404603B1 (fr) 2001-07-09 2002-07-03 Installation d'ascenseur avec zone de protection virtuelle au niveau du fond et/ou du sommet de la cage d'ascenseur, et procede de commande de cette installation

Country Status (12)

Country Link
US (1) US7201256B2 (fr)
EP (1) EP1404603B1 (fr)
JP (1) JP2004534707A (fr)
CN (1) CN1314573C (fr)
AT (1) ATE317824T1 (fr)
AU (1) AU2002315619B2 (fr)
BR (1) BR0210892B1 (fr)
CA (1) CA2451333C (fr)
DE (1) DE50205832D1 (fr)
ES (1) ES2258638T3 (fr)
HK (1) HK1065018A1 (fr)
WO (1) WO2003008316A1 (fr)

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EP3357851B1 (fr) * 2017-02-06 2023-08-02 KONE Corporation Mécanisme permettant d'améliorer la sécurité pour un système d'ascenseur
EP3434634B1 (fr) 2017-07-25 2021-01-06 Otis Elevator Company Dispositif de sécurité d'ascenseur
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Also Published As

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CN1314573C (zh) 2007-05-09
ATE317824T1 (de) 2006-03-15
AU2002315619B2 (en) 2008-01-10
US20040173414A1 (en) 2004-09-09
HK1065018A1 (en) 2005-02-08
EP1404603B1 (fr) 2006-02-15
US7201256B2 (en) 2007-04-10
BR0210892A (pt) 2004-06-22
CA2451333A1 (fr) 2003-01-30
CA2451333C (fr) 2010-06-08
BR0210892B1 (pt) 2011-01-11
WO2003008316A1 (fr) 2003-01-30
JP2004534707A (ja) 2004-11-18
ES2258638T3 (es) 2006-09-01
DE50205832D1 (de) 2006-04-20
CN1524058A (zh) 2004-08-25

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