WO2012105008A1 - Safety control device for elevator - Google Patents

Safety control device for elevator Download PDF

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Publication number
WO2012105008A1
WO2012105008A1 PCT/JP2011/052133 JP2011052133W WO2012105008A1 WO 2012105008 A1 WO2012105008 A1 WO 2012105008A1 JP 2011052133 W JP2011052133 W JP 2011052133W WO 2012105008 A1 WO2012105008 A1 WO 2012105008A1
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WO
WIPO (PCT)
Prior art keywords
safety control
car
door
landing door
landing
Prior art date
Application number
PCT/JP2011/052133
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French (fr)
Japanese (ja)
Inventor
和則 鷲尾
柴田　益誠
Original Assignee
三菱電機株式会社
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.)
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=46602249&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2012105008(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2011/052133 priority Critical patent/WO2012105008A1/en
Priority to KR1020137022681A priority patent/KR101545797B1/en
Priority to EP11857587.7A priority patent/EP2671836B1/en
Priority to JP2012555635A priority patent/JP5784049B2/en
Priority to CN201180065486.1A priority patent/CN103328366B/en
Publication of WO2012105008A1 publication Critical patent/WO2012105008A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22—Operation of door or gate contacts
    • 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
    • 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
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons

Definitions

  • This invention relates to an elevator safety control device that controls the operation of an elevator from the viewpoint of safety.
  • the maintenance staff gets on the car and performs maintenance work on the hoisting machine and the control device.
  • the maintenance staff enters the hoistway pit and performs maintenance work for the hoisting machine and the control device.
  • an overshoot limit switch is provided above and below the hoistway to prevent the car from moving beyond the overshoot limit switch during maintenance operation. ing.
  • a maintenance person enters the pit to perform maintenance work, or gets on the car to perform maintenance work, it must be noted that the car travels unexpectedly.
  • the maintenance staff detects that the landing door unlocking device has been operated and automatically stops the car, thereby preventing the maintenance staff from traveling unexpectedly. (For example, see Patent Document 1).
  • the present invention has been made to solve the above-described problems, and is an elevator that can efficiently detect the movement of a maintenance worker to a hoistway by using existing equipment at low cost.
  • the purpose is to obtain a safety control device.
  • the elevator safety control device includes a car gate switch for detecting opening of a car door, a plurality of landing door switches for detecting opening of a plurality of landing doors, and information input from the car gate switch and the landing door switch.
  • the safety door is divided into multiple systems, and the safety controller can recognize the opening of the landing door independently for each system of the landing door switch. Yes, when the car gate switch indicates the door closed state, when the landing door switch of any system indicates the door open state, and when the car gate switch indicates the door open state When the above landing door switch indicates the door open state, the movement of the maintenance worker to the hoistway is detected.
  • the elevator safety control device efficiently utilizes the existing car gate switch and landing door switch, and maintains the low cost and the case where the car door is closed and opened. The movement of the person to the hoistway can be detected more reliably.
  • FIG. 1 is a block diagram showing a machine room-less type elevator according to Embodiment 1 of the present invention.
  • a hoisting machine 2 is installed in the lower part of the hoistway 1.
  • the hoisting machine 2 includes a drive sheave, a hoisting motor that rotates the driving sheave, and a hoisting machine brake that brakes the rotation of the driving sheave.
  • Suspension means (not shown) is wound around the drive sheave.
  • As the suspension means a plurality of ropes or a plurality of belts are used.
  • the car 3 and the counterweight (not shown) are suspended in the hoistway 1 by suspension means and are raised and lowered by the hoisting machine 2.
  • An elevator control device (control panel) 4 that controls the hoisting machine 2 is installed in the lower part of the hoistway 1.
  • the elevator control device 4 includes an operation control unit 21 that controls the operation of the car 3 and a safety control unit 22.
  • the operation mode of the car 3 by the operation control unit 21 includes an automatic operation mode (normal operation mode) that responds to calls from the landing and the car 3 and a maintenance operation mode (manual operation mode).
  • the safety control unit 22 can instruct the operation control unit 21 about the operation mode.
  • the hall entrance / exit on each floor is opened and closed by the hall door 5.
  • the maintenance staff can move to the pit 1a, which is the lowermost part of the hoistway 1.
  • the landing doors 5 other than the lowest floor it is possible to move maintenance personnel onto the car 3 stopped under the floor.
  • the landing door 5 on each floor is provided with a landing door switch 6 for detecting the open state of the landing door 5.
  • These landing door switches 6 are provided as standard in a general elevator apparatus.
  • the landing door switch 6 includes a lowermost landing door switch 6a that detects the opening of the lowermost landing door 5, and a plurality of odd landings that detect the opening of the odd-numbered landing door 5 excluding the lowermost floor.
  • the system is divided into three systems: a door switch 6b and a plurality of even floor landing door switches 6c that detect opening of the even floor landing doors 5.
  • odd number floor and the even number floor are not the number of floors in the actual building but the number of floors when the floor with the landing door 5 is counted in order from the bottom with the lowest floor as the first floor. Therefore, the odd floor landing door switch 6b and the even floor landing door switch 6c are alternately arranged for each floor.
  • the signal of the landing door switch 6 is input to the elevator control device 4 independently for each of the above systems.
  • the odd floor landing door switch 6b and the even floor landing door switch 6c are connected in series for each system. Therefore, the elevator control device 4 can recognize the opening of the landing door 5 on the lowest floor, the landing door 5 on the odd floor, and the landing door 5 on the even floor independently for each system of the landing door switch 6.
  • in-pit maintenance operation mode changeover switch (automatic operation invalidation switch) 9 for switching the operation mode to the maintenance operation mode and the car 3 to operate in the maintenance operation mode.
  • In-pit maintenance operation device 10 is provided.
  • the in-pit maintenance operation mode changeover switch 9 and the in-pit maintenance operation mode switch 10 are arranged close to each other and are electrically connected to the elevator control device 4.
  • a first reset switch 11 for resetting the operation mode and returning the operation mode to the automatic operation mode is provided at the lowest floor hall.
  • a landing on a predetermined floor (for example, the second floor) other than the lowest floor is provided with a second reset switch 12 for resetting operation mode switching and returning the operation mode to the automatic operation mode.
  • the reset switches 11 and 12 are electrically connected to the elevator control device 4.
  • the car doorway is opened and closed by a car door 13.
  • the car door 13 engages with the landing door 5 on that floor.
  • the landing door 5 is opened and closed in conjunction with the car door 13.
  • a door operator (car upper station) 14 for controlling opening and closing of the car door 13 is provided.
  • the door operator 14 includes a car maintenance operation mode switching switch (automatic operation invalidation switch) 15 for switching the operation mode to the maintenance operation mode, and a car maintenance operation device 16 for operating the car 3 in the maintenance operation mode. And are provided.
  • the on-car maintenance operation mode switch 15 and the on-car maintenance operation device 16 are arranged close to each other and are electrically connected to the elevator control device 4.
  • the in-pit maintenance operation mode switching switch 9, the in-pit maintenance operation device 10, the on-car maintenance operation mode switching switch 15, and the on-car maintenance operation device 16 are all arranged in the hoistway 1. For this reason, in order to operate these, the maintenance person artificially opens the landing door 5 and enters the hoistway 1.
  • the car door 13 is provided with a car gate switch 17 for detecting the open state of the car door 13.
  • a maintenance operation lower limit switch 18 is provided at the lower part of the hoistway 1 to restrict the lowering of the car 3 during the maintenance operation.
  • a maintenance operation upper limit switch 19 is provided at the upper part in the hoistway 1 to limit the rise of the car 3 during the maintenance operation.
  • the car 3 is provided with a cam 20 for operating the limit switches 18 and 19.
  • the safety control unit 22 indicates that when any of the landing door switches 6 indicates the door open state, and the car gate switch 17 indicates the door open state.
  • the movement of the maintenance staff to the hoistway 1 is detected and the automatic operation is invalidated.
  • the control of the safety control unit 22 is divided into a case where the car door 13 is closed and a case where the car door 13 is open, the following safety control logics 1 and 2 are obtained.
  • Safety control logic The safety control unit 22 monitors the state of the car gate switch 17 and the three system landing door switches 6a, 6b, 6c.
  • the car gate switch 17 is on, that is, when the car door 13 is fully closed.
  • any of the landing door switches 6a, 6b, 6c is turned off, that is, when it is detected that any of the landing doors 5 is opened (not fully closed), the automatic operation is invalidated.
  • Safety control logic When the car gate switch 17 is turned off, that is, when the car door 13 is opened, the safety control unit 22 turns off two or more of the landing door switches 6a, 6b, 6c, When it is detected that two or more landing doors 5 are opened, automatic operation is invalidated.
  • the landing door 5 on the lowest floor is opened and the pit 1a is entered.
  • the landing door 5 is opened on the car 3 immediately above the stop floor of the car 3 (or after the car 3 is stopped just below the floor to be boarded). Get in.
  • only the landing door 5 is normally open. Therefore, by controlling with the safety control logic 1, it is possible to detect almost all cases where the maintenance person moves on the pit 1a and the car 3.
  • the maintenance staff moves to the pit 1a or the car 3 with the car 3 stopping automatically and stopped on the floor where both the car door 13 and the landing door 5 are open. There can be.
  • the control of the safety control logic 2 described above causes the lowest floor landing door 5 that leads to the pit 1a even when both the car door 13 and the landing door 5 are open on a certain floor.
  • it is possible to detect the movement of the maintenance staff by detecting that the landing door 5 on the floor immediately above the stop floor of the car 3 leading to the car 3 is opened, that is, the opening of the landing doors 5 of two or more systems.
  • the safety control unit 22 operates the first reset switch 11 or the second reset switch 12 outside the hoistway 1 to receive a reset signal, Further, the invalidation of the automatic operation is continued until the fully closed state of all the landing doors 5 and the car doors 13 is confirmed. In addition, when the power is reset due to a power failure or the like, automatic operation is disabled for safety.
  • the maintenance engineer switches the operation mode to the maintenance operation mode by the maintenance operation mode switching switch 9 in the pit or the maintenance operation mode switching switch 15 on the car,
  • the car 3 can be manually operated (maintenance operation or inspection operation) by the maintenance operation device 10 or the on-car maintenance operation device 16.
  • the moving range of the car 3 is limited by the maintenance operation lower limit switch 18 and the maintenance operation upper limit switch 19.
  • FIG. 2 is a block diagram showing the safety control device for the elevator shown in FIG.
  • the safety control unit 22 is redundant (in this case, duplexed) in order to ensure sufficient reliability of safety control, and includes first and second logic circuits 23a and 23b that perform the same processing. Yes. Signals from the switches 6a, 6b, 6c, 11, 12, and 17 are input to both the first logic circuit 23a and the second logic circuit 23b, respectively. At this time, the input signals from the landing door switches 6a, 6b, 6c and the car gate switch 17 are also duplicated and compared with each other in the first logic circuit 23a and the second logic circuit 23b.
  • the logical circuits 23a and 23b take the logical product of the inputs from the three systems of the landing door switches 6a, 6b, and 6c (connected in series), which is equivalent to the input of the conventional landing door switch 6 A signal is obtained. By outputting this signal to another device such as the operation control unit 21 or a relay output, it is possible to perform the same control as that of a conventional elevator (for example, control such as prevention of door-opening traveling).
  • the first and second logic circuits 23a and 23b perform safety control, take the logical product of the output results (valid / invalid of automatic operation), and then output to the first and second relays 24a and 24b. To do.
  • the first and second relays 24a and 24b are connected in series, and are input to the operation control unit 21 so that the automatic operation is effective only when the contacts are both closed (turned on). . That is, if either one of the first and second logic circuits 23a and 23b outputs a command that invalidates the automatic operation, the automatic operation of the car 3 is invalidated.
  • the output result is input again to the first and second logic circuits 23a and 23b, and it is diagnosed whether the result is output correctly. Further, the first and second logic circuits 23a and 23b have a self-diagnosis function for checking their own soundness. When an abnormality is detected by the logic circuits 23a and 23b, an output for invalidating the automatic operation of the car 3 is performed.
  • the logic circuits 23a and 23b may be realized by a computer including software (a computer different from the computer of the operation control unit 21). Each computer has a CPU (Central Processing Unit), ROM, RAM, WDT (Watch Dog Timer) and the like. Then, inspections relating to reading and writing of ROM and RAM and time monitoring by WDT are performed.
  • CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • WDT Watch Dog Timer
  • each logic circuit 23a, 23b uses ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), CPLD (Complex Programmable Logic), etc. Alternatively, it may be realized by a relay circuit or the like.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic
  • the maintenance work device 25 includes a maintenance operation mode changeover switch 9 in the pit, a maintenance operation device 10 in the pit, a maintenance operation mode changeover switch 15 on the car 15 and a maintenance operation device 16 on the car.
  • FIG. 3 is a flowchart showing the safety control process in the safety control unit 22 of FIG.
  • the safety control unit 22 repeatedly executes the process of FIG. 3 while the automatic operation is not invalidated (valid).
  • the input signal is first diagnosed (step S1), and if there is an abnormality, the automatic operation is invalidated (step S2). If there is no abnormality, the car gate switch 17 is determined (step S3). If the car door 13 is fully closed, the landing door switches 6a, 6b, 6c are determined (step S4). And if the landing door 5 of any system
  • step S5 When the car door 13 is in the door open state, the landing door switches 6a, 6b, and 6c are determined (step S5). If the two or more landing doors 5 are in the open state, the automatic operation is invalidated (step S2). ).
  • step S6 The operation results of the logic circuits 23a and 23b are collated (step S6). If the calculation results do not match, the automatic operation is invalidated (step S2). If the calculation results match, the output signal is diagnosed (step S7). If there is an abnormality in the diagnosis result of the output signal, the automatic operation is invalidated (step S2). If the calculation results match and there is no abnormality in the signal, the process ends.
  • FIG. 4 is a flowchart showing the automatic operation reset process in the safety control unit 22 of FIG.
  • the safety control unit 22 repeatedly executes the process of FIG. 4 when the invalidation of the automatic driving is maintained.
  • step S11 an input signal is diagnosed (step S11), and if there is an abnormality, automatic operation invalidation is maintained (step S12). If there is no abnormality, a reset signal input determination is made (step S13), and if no reset signal is input, automatic operation invalidation is maintained (step S12).
  • step S14 If the reset signal is input, the car gate switch 17 is determined (step S14). And if the car door 13 is an open state, automatic driving
  • step S16 If all the landing doors 5 are fully closed, the operation results of the redundant logic circuits 23a and 23b are collated (step S16). If the calculation results do not match, the automatic operation invalidation is maintained (step S12). If the calculation results match, the output signal is diagnosed (step S17). If there is an abnormality in the output signal diagnosis result, the automatic operation invalidation is maintained (step S12). If the calculation results match and there is no abnormality in the signal, automatic operation invalidation is canceled (automatic operation is activated) (step S18), and the process is switched to the safety control process shown in FIG.
  • an elevator safety control device for example, when the car 3 is traveling or stopped on a certain floor in a door-closed state or in a door-open state, a maintenance worker communicates with the car 3 or the pit 1a to perform maintenance work. By detecting that the landing door 5 is opened and automatically disabling automatic operation, even if the maintenance staff forgets the automatic operation invalidation operation, the car 3 will run unexpectedly for the maintenance staff. This can be reliably prevented and the safety of maintenance personnel can be ensured. Moreover, by efficiently using the existing equipment in the elevator, the movement of the maintenance staff to the hoistway 1 can be detected at a low cost.
  • FIG. 5 is a block diagram showing a machine room-less type elevator according to Embodiment 2 of the present invention.
  • the landing door switch 6 can be divided into three systems: a lowest floor landing door switch 6a, a specific floor landing door switch 6d, and a non-specific floor landing door switch 6e provided on another floor.
  • Safety control logic The safety control unit 22 monitors the state of the car gate switch 17 and the three system landing door switches 6a, 6d, and 6e.
  • the car gate switch 17 When the car gate switch 17 is on, that is, when the car door 13 is fully closed.
  • any of the landing door switches 6a, 6d, 6e is turned off, that is, when it is detected that any of the landing doors 5 is opened, the automatic operation is invalidated.
  • Safety control logic When the car gate switch 17 is off, that is, when the car door 13 is opened, the safety control unit 22 turns off two or more of the landing door switches 6a, 6d, and 6e, that is, When it is detected that two or more landing doors 5 are opened, automatic operation is invalidated.
  • Other configurations are the same as those in the first embodiment.
  • the lowest floor landing door switch 6a is one independent system. However, when the maintenance staff opens the lowermost landing door 5 and does not move into the pit 1a, etc.
  • the landing door switch 6 on the lowest floor need not be an independent system.
  • the landing door switch 6 is divided into three systems, but may be divided into four or more systems.
  • FIG. 6 is a block diagram showing a machine room-less type elevator according to Embodiment 3 of the present invention.
  • the landing door switches 6 are divided into the same number of floors as the number of floors so that the open / close states of the landing doors 5 of all the floors are individually detected. That is, the signals of all the landing door switches 6 are input to the elevator control device 4 as independent systems.
  • Safety control logic The safety control unit 22 monitors the state of the car gate switch 17 and the landing door switches 6 of all systems, and when the car gate switch 17 is on, that is, when the car door 13 is fully closed, When the landing door switch 6 is turned off, that is, when it is detected that any of the landing doors 5 is opened, the automatic operation is invalidated.
  • Safety control logic When the car gate switch 17 is off, that is, when the car door 13 is opened, the safety control unit 22 is turned off when two or more of the landing door switches 6 are turned off, that is, at two or more places. When it is detected that the landing door 5 is opened, the automatic operation is invalidated.
  • Other configurations are the same as those in the first embodiment.
  • the automatic operation of the car 3 is invalidated when the movement of the maintenance worker to the hoistway 1 is detected, but the operation mode of the operation control unit 21 is switched to the manual operation mode. Also good. Further, when the movement of the maintenance worker to the hoistway 1 is detected, an elevator safety circuit (not shown) may be shut off. In this case, since the energization to the hoisting machine motor and the hoisting machine brake is interrupted, the car 3 can be stopped without going through the operation control unit 21. In the first to third embodiments, the connection from the various switches to the safety control unit 22 is performed by wire, but may be performed wirelessly.
  • the reset switches 11 and 12 are provided outside the hoistway 1, but may be provided inside the hoistway 1.
  • the hoisting machine 2 and the elevator control device 4 are disposed in the lower part of the hoistway 1, but the present invention is not limited to this layout.
  • the present invention can also be applied to an elevator disposed in the upper part.
  • the machine room-less type elevator is shown.
  • the present invention can be applied to any type of elevator as long as the elevator performs maintenance work in the hoistway.
  • the present invention can be applied to an elevator with a machine room, a double deck type elevator, a low press type elevator, a linear motor elevator, a hydraulic elevator, and the like.

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Door Apparatuses (AREA)

Abstract

In a safety control device for an elevator, a plurality of loading zone door switches are separated into a plurality of systems. A safety control unit is capable of recognizing a release of a loading zone door for each system of the loading zone door switches independently. Further, in the case where the loading zone door switch of any system indicates a door open state when a car gate switch indicates a door close state, and in the case where the loading zone door switches of two or more systems indicate the door open state when the car gate switch indicates the door open state, the safety control unit detects a movement of a maintenance worker to a hoistway.

Description

エレベータの安全制御装置Elevator safety control device
　この発明は、安全性の観点からエレベータの運転を制御するエレベータの安全制御装置に関するものである。 This invention relates to an elevator safety control device that controls the operation of an elevator from the viewpoint of safety.
　近年のエレベータにおいては、機械室を持たず、巻上機や制御装置が昇降路内に設置されている機械室レスタイプが主流となっている。このため、エレベータ機器の保守時には、保守員が昇降路内に入って保守作業をする頻度が高くなっている。 In recent elevators, a machine room-less type in which a hoisting machine and a control device are installed in a hoistway without having a machine room has become the mainstream. For this reason, at the time of maintenance of elevator equipment, the frequency of maintenance personnel entering the hoistway and performing maintenance work is high.
　例えば、巻上機や制御装置が昇降路内の上部に設置されている場合、保守員はかご上に乗って巻上機や制御装置の保守作業を行う。また、乗場ドア装置や各種の昇降路内スイッチ等を保守する場合も、保守員はかご上に乗って保守作業を行う。さらに、巻上機や制御装置が昇降路内の下部に設置されている場合、保守員は昇降路ピット内に入って巻上機や制御装置の保守作業を行う。 For example, when the hoisting machine and the control device are installed in the upper part of the hoistway, the maintenance staff gets on the car and performs maintenance work on the hoisting machine and the control device. In addition, when maintaining the landing door device and various hoistway switches, maintenance personnel get on the car to perform maintenance work. Further, when the hoisting machine and the control device are installed in the lower part of the hoistway, the maintenance staff enters the hoistway pit and performs maintenance work for the hoisting machine and the control device.
　このような保守作業時の保守員の退避スペースを確保するため、昇降路の上部及び下部に行き過ぎ制限スイッチが設けられており、保守運転時には行き過ぎ制限スイッチを越えてかごが移動することが防止されている。また、保守員がピット内に入って保守作業を行う場合や、かご上に乗り込んで保守作業を行う場合、かごが不意に走行することに注意する必要がある。 In order to secure a space for maintenance personnel during such maintenance work, an overshoot limit switch is provided above and below the hoistway to prevent the car from moving beyond the overshoot limit switch during maintenance operation. ing. In addition, when a maintenance person enters the pit to perform maintenance work, or gets on the car to perform maintenance work, it must be noted that the car travels unexpectedly.
　さらに、従来のエレベータでは、保守員が乗場ドアの解錠装置を操作したことを検知して、かごの運転を自動的に阻止することで、保守員にとってかごが不意に走行することが防止される（例えば、特許文献１参照）。 Furthermore, in conventional elevators, the maintenance staff detects that the landing door unlocking device has been operated and automatically stops the car, thereby preventing the maintenance staff from traveling unexpectedly. (For example, see Patent Document 1).
　さらにまた、従来の他のエレベータでは、特別な装置を設置することで、保守員が昇降路内の危険ゾーンに侵入したことを検知して、かごの運転を特別動作モードに移行することで、危険ゾーン内にエレベータが移動することが防止される（例えば、特許文献２参照）。 Furthermore, in other conventional elevators, by installing a special device, it is detected that the maintenance staff has entered the danger zone in the hoistway, and the operation of the car is shifted to the special operation mode. The elevator is prevented from moving into the danger zone (see, for example, Patent Document 2).
特開平８－９１７３０号公報JP-A-8-91730 特表２００４－５３４７０７０号公報JP-T-2004-5347070
　上記のような従来装置では、保守員の昇降路への移動を検知するための追加の設備が必要となり、コストが高くなるという問題がある。 In the conventional apparatus as described above, there is a problem that additional equipment for detecting the movement of the maintenance staff to the hoistway is required, and the cost is increased.
　この発明は、上記のような課題を解決するためになされたものであり、既設の機器を効率的に利用して、保守員の昇降路への移動を低コストで検知することができるエレベータの安全制御装置を得ることを目的とする。 The present invention has been made to solve the above-described problems, and is an elevator that can efficiently detect the movement of a maintenance worker to a hoistway by using existing equipment at low cost. The purpose is to obtain a safety control device.
　この発明に係るエレベータの安全制御装置は、かごドアの開放を検出するかごゲートスイッチ、複数の乗場ドアの開放を検出する複数の乗場ドアスイッチ、及びかごゲートスイッチ及び乗場ドアスイッチから入力される情報に基づいて安全制御を行う安全制御部を備え、乗場ドアスイッチは、複数の系統に分けられており、安全制御部は、乗場ドアの開放を乗場ドアスイッチの系統毎に独立して認識可能であり、かごゲートスイッチが戸閉状態を示しているときに、いずれかの系統の乗場ドアスイッチが戸開状態を示した場合、及びかごゲートスイッチが戸開状態を示しているときに、２系統以上の乗場ドアスイッチが戸開状態を示した場合に、保守員の昇降路への移動を検知する。 The elevator safety control device according to the present invention includes a car gate switch for detecting opening of a car door, a plurality of landing door switches for detecting opening of a plurality of landing doors, and information input from the car gate switch and the landing door switch. The safety door is divided into multiple systems, and the safety controller can recognize the opening of the landing door independently for each system of the landing door switch. Yes, when the car gate switch indicates the door closed state, when the landing door switch of any system indicates the door open state, and when the car gate switch indicates the door open state When the above landing door switch indicates the door open state, the movement of the maintenance worker to the hoistway is detected.
　この発明のエレベータの安全制御装置は、既設のかごゲートスイッチ及び乗場ドアスイッチを効率的に利用して、低コストで、かごドアが閉鎖されている場合と開放されているとのそれぞれについて、保守員の昇降路への移動をより確実に検知することができる。 The elevator safety control device according to the present invention efficiently utilizes the existing car gate switch and landing door switch, and maintains the low cost and the case where the car door is closed and opened. The movement of the person to the hoistway can be detected more reliably.
この発明の実施の形態１による機械室レスタイプのエレベータを示す構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the machine room less type elevator by Embodiment 1 of this invention. 図１のエレベータの安全制御装置を示すブロック図である。It is a block diagram which shows the safety control apparatus of the elevator of FIG. 図１の安全制御部における安全制御処理を示すフローチャートである。It is a flowchart which shows the safety control process in the safety control part of FIG. 図１の安全制御部における自動運転のリセット処理を示すフローチャートである。It is a flowchart which shows the reset process of the automatic driving | operation in the safety control part of FIG. この発明の実施の形態２による機械室レスタイプのエレベータを示す構成図である。It is a block diagram which shows the machine room less type elevator by Embodiment 2 of this invention. この発明の実施の形態３による機械室レスタイプのエレベータを示す構成図である。It is a block diagram which shows the machine room less type elevator by Embodiment 3 of this invention.
　以下、この発明を実施するための形態について、図面を参照して説明する。
　実施の形態１．
　図１はこの発明の実施の形態１による機械室レスタイプのエレベータを示す構成図である。図において、昇降路１内の下部には、巻上機２が設置されている。巻上機２は、駆動シーブと、駆動シーブを回転させる巻上機モータと、駆動シーブの回転を制動する巻上機ブレーキとを有している。駆動シーブには、懸架手段（図示せず）が巻き掛けられている。懸架手段としては、複数本のロープ又は複数本のベルトが用いられている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a machine room-less type elevator according to Embodiment 1 of the present invention. In the figure, a hoisting machine 2 is installed in the lower part of the hoistway 1. The hoisting machine 2 includes a drive sheave, a hoisting motor that rotates the driving sheave, and a hoisting machine brake that brakes the rotation of the driving sheave. Suspension means (not shown) is wound around the drive sheave. As the suspension means, a plurality of ropes or a plurality of belts are used.
　かご３及び釣合おもり（図示せず）は、懸架手段により昇降路１内に吊り下げられており、巻上機２により昇降される。昇降路１内の下部には、巻上機２を制御するエレベータ制御装置（制御盤）４が設置されている。エレベータ制御装置４は、かご３の運転を制御する運転制御部２１と、安全制御部２２とを有している。 The car 3 and the counterweight (not shown) are suspended in the hoistway 1 by suspension means and are raised and lowered by the hoisting machine 2. An elevator control device (control panel) 4 that controls the hoisting machine 2 is installed in the lower part of the hoistway 1. The elevator control device 4 includes an operation control unit 21 that controls the operation of the car 3 and a safety control unit 22.
　運転制御部２１によるかご３の運転モードには、乗場及びかご３内からの呼びに応答する自動運転モード（通常運転モード）と、保守運転モード（手動運転モード）とが含まれている。安全制御部２２は、運転モードを運転制御部２１に指示することができる。 The operation mode of the car 3 by the operation control unit 21 includes an automatic operation mode (normal operation mode) that responds to calls from the landing and the car 3 and a maintenance operation mode (manual operation mode). The safety control unit 22 can instruct the operation control unit 21 about the operation mode.
　各階の乗場出入口は、乗場ドア５により開閉される。最下階の乗場ドア５を開放することにより、昇降路１の最下部であるピット１ａへの保守員の移動が可能となる。また、最下階以外の乗場ドア５を開放することにより、その階の下に停止させたかご３上への保守員の移動が可能となる。 The hall entrance / exit on each floor is opened and closed by the hall door 5. By opening the landing door 5 on the lowest floor, the maintenance staff can move to the pit 1a, which is the lowermost part of the hoistway 1. Moreover, by opening the landing doors 5 other than the lowest floor, it is possible to move maintenance personnel onto the car 3 stopped under the floor.
　各階の乗場ドア５には、乗場ドア５の開状態を検出する乗場ドアスイッチ６が設けられている。これらの乗場ドアスイッチ６は、一般的なエレベータ装置に標準的に設けられているものである。 The landing door 5 on each floor is provided with a landing door switch 6 for detecting the open state of the landing door 5. These landing door switches 6 are provided as standard in a general elevator apparatus.
　また、乗場ドアスイッチ６は、最下階の乗場ドア５の開放を検出する最下階乗場ドアスイッチ６ａ、最下階を除いた奇数階の乗場ドア５の開放を検出する複数の奇数階乗場ドアスイッチ６ｂ、及び偶数階の乗場ドア５の開放を検出する複数の偶数階乗場ドアスイッチ６ｃの３系統に分けられている。 The landing door switch 6 includes a lowermost landing door switch 6a that detects the opening of the lowermost landing door 5, and a plurality of odd landings that detect the opening of the odd-numbered landing door 5 excluding the lowermost floor. The system is divided into three systems: a door switch 6b and a plurality of even floor landing door switches 6c that detect opening of the even floor landing doors 5.
　なお、ここでの奇数階・偶数階は、実際の建物における階数ではなく、最下階を１階として乗場ドア５の設けられている階を下から順に数えたときの階数である。従って、奇数階乗場ドアスイッチ６ｂと偶数階乗場ドアスイッチ６ｃとは、１階床毎に交互に配置されている。 In addition, the odd number floor and the even number floor here are not the number of floors in the actual building but the number of floors when the floor with the landing door 5 is counted in order from the bottom with the lowest floor as the first floor. Therefore, the odd floor landing door switch 6b and the even floor landing door switch 6c are alternately arranged for each floor.
　乗場ドアスイッチ６の信号は、上記の系統毎に独立してエレベータ制御装置４に入力されている。また、奇数階乗場ドアスイッチ６ｂ及び偶数階乗場ドアスイッチ６ｃは、系統毎に直列に接続されている。従って、エレベータ制御装置４は、最下階の乗場ドア５、奇数階の乗場ドア５、及び偶数階の乗場ドア５の開放を、乗場ドアスイッチ６の系統毎に独立して認識可能である。 The signal of the landing door switch 6 is input to the elevator control device 4 independently for each of the above systems. The odd floor landing door switch 6b and the even floor landing door switch 6c are connected in series for each system. Therefore, the elevator control device 4 can recognize the opening of the landing door 5 on the lowest floor, the landing door 5 on the odd floor, and the landing door 5 on the even floor independently for each system of the landing door switch 6.
　昇降路１の最下部であるピット１ａには、運転モードを保守運転モードに切り替えるためのピット内保守運転モード切替スイッチ（自動運転無効化スイッチ）９と、かご３を保守運転モードで運転するためのピット内保守運転装置１０とが設けられている。ピット内保守運転モード切替スイッチ９及びピット内保守運転装置１０は、互いに近接して配置され、エレベータ制御装置４に電気的に接続されている。 In the pit 1a at the lowest part of the hoistway 1, in-pit maintenance operation mode changeover switch (automatic operation invalidation switch) 9 for switching the operation mode to the maintenance operation mode and the car 3 to operate in the maintenance operation mode. In-pit maintenance operation device 10 is provided. The in-pit maintenance operation mode changeover switch 9 and the in-pit maintenance operation mode switch 10 are arranged close to each other and are electrically connected to the elevator control device 4.
　最下階の乗場には、運転モードの切替をリセットして運転モードを自動運転モードに戻すための第１のリセットスイッチ１１が設けられている。最下階以外の所定の階（例えば２階）の乗場には、運転モードの切替をリセットして運転モードを自動運転モードに戻すための第２のリセットスイッチ１２が設けられている。リセットスイッチ１１，１２は、エレベータ制御装置４に電気的に接続されている。 A first reset switch 11 for resetting the operation mode and returning the operation mode to the automatic operation mode is provided at the lowest floor hall. A landing on a predetermined floor (for example, the second floor) other than the lowest floor is provided with a second reset switch 12 for resetting operation mode switching and returning the operation mode to the automatic operation mode. The reset switches 11 and 12 are electrically connected to the elevator control device 4.
　かご出入口は、かごドア１３により開閉される。通常運転時にかご３がドアゾーン内に着床すると、かごドア１３がその階の乗場ドア５に係合する。これにより、乗場ドア５は、かごドア１３に連動して開閉される。 The car doorway is opened and closed by a car door 13. When the car 3 reaches the door zone during normal operation, the car door 13 engages with the landing door 5 on that floor. As a result, the landing door 5 is opened and closed in conjunction with the car door 13.
　かご３上には、かごドア１３の開閉を制御するドアオペレータ（かご上ステーション）１４が設けられている。ドアオペレータ１４には、運転モードを保守運転モードに切り替えるためのかご上保守運転モード切替スイッチ（自動運転無効化スイッチ）１５と、かご３を保守運転モードで運転するためのかご上保守運転装置１６とが設けられている。かご上保守運転モード切替スイッチ１５及びかご上保守運転装置１６は、互いに近接して配置され、エレベータ制御装置４に電気的に接続されている。 On the car 3, a door operator (car upper station) 14 for controlling opening and closing of the car door 13 is provided. The door operator 14 includes a car maintenance operation mode switching switch (automatic operation invalidation switch) 15 for switching the operation mode to the maintenance operation mode, and a car maintenance operation device 16 for operating the car 3 in the maintenance operation mode. And are provided. The on-car maintenance operation mode switch 15 and the on-car maintenance operation device 16 are arranged close to each other and are electrically connected to the elevator control device 4.
　このように、ピット内保守運転モード切替スイッチ９、ピット内保守運転装置１０、かご上保守運転モード切替スイッチ１５及びかご上保守運転装置１６は、いずれも昇降路１内に配置されている。このため、これらを操作するためには、保守員は乗場ドア５を人為的に開放して昇降路１内に立ち入ることになる。 Thus, the in-pit maintenance operation mode switching switch 9, the in-pit maintenance operation device 10, the on-car maintenance operation mode switching switch 15, and the on-car maintenance operation device 16 are all arranged in the hoistway 1. For this reason, in order to operate these, the maintenance person artificially opens the landing door 5 and enters the hoistway 1.
　かごドア１３には、かごドア１３の開状態を検出するかごゲートスイッチ１７が設けられている。昇降路１内の下部には、保守運転時にかご３の下降を制限する保守運転下部リミットスイッチ１８が設けられている。昇降路１内の上部には、保守運転時にかご３の上昇を制限する保守運転上部リミットスイッチ１９が設けられている。かご３には、リミットスイッチ１８，１９を操作するカム２０が設けられている。 The car door 13 is provided with a car gate switch 17 for detecting the open state of the car door 13. A maintenance operation lower limit switch 18 is provided at the lower part of the hoistway 1 to restrict the lowering of the car 3 during the maintenance operation. A maintenance operation upper limit switch 19 is provided at the upper part in the hoistway 1 to limit the rise of the car 3 during the maintenance operation. The car 3 is provided with a cam 20 for operating the limit switches 18 and 19.
　安全制御部２２は、かごゲートスイッチ１７が戸閉状態を示しているときに、いずれかの系統の乗場ドアスイッチ６が戸開状態を示した場合、及びかごゲートスイッチ１７が戸開状態を示しているときに、２系統以上の乗場ドアスイッチ６が戸開状態を示した場合に、保守員の昇降路１への移動を検知し、自動運転を無効化する。このような安全制御部２２の制御を、かごドア１３が閉じている場合と開いている場合とに分けると、以下の安全制御論理１、２となる。 When the car gate switch 17 indicates the door closed state, the safety control unit 22 indicates that when any of the landing door switches 6 indicates the door open state, and the car gate switch 17 indicates the door open state. When two or more landing door switches 6 indicate a door open state, the movement of the maintenance staff to the hoistway 1 is detected and the automatic operation is invalidated. When the control of the safety control unit 22 is divided into a case where the car door 13 is closed and a case where the car door 13 is open, the following safety control logics 1 and 2 are obtained.
　安全制御論理１．
　安全制御部２２は、かごゲートスイッチ１７及び３系統の乗場ドアスイッチ６ａ，６ｂ，６ｃの状態を監視し、かごゲートスイッチ１７がオンであるとき、即ちかごドア１３が全閉状態であるときに、いずれかの乗場ドアスイッチ６ａ，６ｂ，６ｃがオフとなった場合、即ちいずれかの乗場ドア５が開放した（全閉でなくなった）ことを検出した場合に、自動運転を無効化する。 Safety control logic
The safety control unit 22 monitors the state of the car gate switch 17 and the three system landing door switches 6a, 6b, 6c. When the car gate switch 17 is on, that is, when the car door 13 is fully closed. When any of the landing door switches 6a, 6b, 6c is turned off, that is, when it is detected that any of the landing doors 5 is opened (not fully closed), the automatic operation is invalidated.
　安全制御論理２．
　安全制御部２２は、かごゲートスイッチ１７がオフであるとき、即ちかごドア１３が開放されているときに、乗場ドアスイッチ６ａ，６ｂ，６ｃのうちの２系統以上がオフとなった場合、即ち２系統以上の乗場ドア５が戸開したことを検出した場合に、自動運転を無効化する。 Safety control logic
When the car gate switch 17 is turned off, that is, when the car door 13 is opened, the safety control unit 22 turns off two or more of the landing door switches 6a, 6b, 6c, When it is detected that two or more landing doors 5 are opened, automatic operation is invalidated.
　通常、保守員が保守作業のためにピット１ａに入るときには、最下階の乗場ドア５を開けてピット１ａに入る。また、保守員がかご３上に乗り込むときには、かご３の停止階の直上階の（又は乗り込もうとする階床のすぐ下にかご３を停止させてから）乗場ドア５を開けてかご３上に乗り込む。このとき、通常は乗場ドア５だけが開状態となる。従って、上記の安全制御論理１で制御することで、保守員のピット１ａ及びかご３上への移動の殆どの場合を検知することができる。 Normally, when a maintenance worker enters the pit 1a for maintenance work, the landing door 5 on the lowest floor is opened and the pit 1a is entered. When the maintenance person gets on the car 3, the landing door 5 is opened on the car 3 immediately above the stop floor of the car 3 (or after the car 3 is stopped just below the floor to be boarded). Get in. At this time, only the landing door 5 is normally open. Therefore, by controlling with the safety control logic 1, it is possible to detect almost all cases where the maintenance person moves on the pit 1a and the car 3.
　しかしながら、稀なケースとして、自動運転中のかご３がある階床に停止し、かごドア１３及び乗場ドア５の両方が開放された状態で、保守員がピット１ａ又はかご３上へ移動することがあり得る。その場合への対処として、上記の安全制御論理２の制御により、ある階床においてかごドア１３及び乗場ドア５の両方が開放状態にあっても、ピット１ａに通じる最下階の乗場ドア５、又はかご３上に通じるかご３の停止階の直上階の乗場ドア５が開いたこと、即ち２系統以上の乗場ドア５の開放を検出し、保守員の移動を検知することができる。 However, as a rare case, the maintenance staff moves to the pit 1a or the car 3 with the car 3 stopping automatically and stopped on the floor where both the car door 13 and the landing door 5 are open. There can be. As a countermeasure for this, the control of the safety control logic 2 described above causes the lowest floor landing door 5 that leads to the pit 1a even when both the car door 13 and the landing door 5 are open on a certain floor, Alternatively, it is possible to detect the movement of the maintenance staff by detecting that the landing door 5 on the floor immediately above the stop floor of the car 3 leading to the car 3 is opened, that is, the opening of the landing doors 5 of two or more systems.
　また、安全制御部２２は、自動運転を一旦無効化した場合、昇降路１の外部にある第１のリセットスイッチ１１又は第２のリセットスイッチ１２が保守員により操作され、リセット信号を受信し、さらに全ての乗場ドア５及びかごドア１３の全閉状態を確認するまでは、自動運転の無効化を継続する。また、停電等で電源リセットされた場合には、安全のために自動運転を無効化する。 In addition, when the automatic operation is once invalidated, the safety control unit 22 operates the first reset switch 11 or the second reset switch 12 outside the hoistway 1 to receive a reset signal, Further, the invalidation of the automatic operation is continued until the fully closed state of all the landing doors 5 and the car doors 13 is confirmed. In addition, when the power is reset due to a power failure or the like, automatic operation is disabled for safety.
　安全制御部２２によって、エレベータの自動運転が無効化された場合、保守員は、ピット内保守運転モード切替スイッチ９又はかご上保守運転モード切替スイッチ１５により運転モードを保守運転モードに切り替え、ピット内保守運転装置１０又はかご上保守運転装置１６によりかご３を手動運転（保守運転又は点検運転）することが可能である。手動運転中は、保守運転下部リミットスイッチ１８及び保守運転上部リミットスイッチ１９により、かご３の移動範囲が制限される。 When the automatic operation of the elevator is invalidated by the safety control unit 22, the maintenance engineer switches the operation mode to the maintenance operation mode by the maintenance operation mode switching switch 9 in the pit or the maintenance operation mode switching switch 15 on the car, The car 3 can be manually operated (maintenance operation or inspection operation) by the maintenance operation device 10 or the on-car maintenance operation device 16. During manual operation, the moving range of the car 3 is limited by the maintenance operation lower limit switch 18 and the maintenance operation upper limit switch 19.
　図２は図１のエレベータの安全制御装置を示すブロック図である。安全制御部２２は、安全制御の十分な信頼性を確保するために、冗長化（ここでは二重化）されており、同一の処理を行う第１及び第２の論理回路２３ａ，２３ｂを有している。上記のスイッチ６ａ，６ｂ，６ｃ，１１，１２，１７からの信号は、第１の論理回路２３ａと第２の論理回路２３ｂとの両方にそれぞれ入力される。このとき、乗場ドアスイッチ６ａ，６ｂ，６ｃ及びかごゲートスイッチ１７からの入力信号も二重化されており、第１の論理回路２３ａと第２の論理回路２３ｂとで互いに比較される。 FIG. 2 is a block diagram showing the safety control device for the elevator shown in FIG. The safety control unit 22 is redundant (in this case, duplexed) in order to ensure sufficient reliability of safety control, and includes first and second logic circuits 23a and 23b that perform the same processing. Yes. Signals from the switches 6a, 6b, 6c, 11, 12, and 17 are input to both the first logic circuit 23a and the second logic circuit 23b, respectively. At this time, the input signals from the landing door switches 6a, 6b, 6c and the car gate switch 17 are also duplicated and compared with each other in the first logic circuit 23a and the second logic circuit 23b.
　また、論理回路２３ａ，２３ｂにより、３系統の乗場ドアスイッチ６ａ，６ｂ，６ｃからの入力の論理積がとられ（直列接続され）ており、これにより従来の乗場ドアスイッチ６の入力と同等の信号が得られる。この信号を運転制御部２１等の他の装置に信号出力又はリレー出力することで、従来のエレベータと同様の制御（例えば戸開走行防止等の制御）が可能となる。 The logical circuits 23a and 23b take the logical product of the inputs from the three systems of the landing door switches 6a, 6b, and 6c (connected in series), which is equivalent to the input of the conventional landing door switch 6 A signal is obtained. By outputting this signal to another device such as the operation control unit 21 or a relay output, it is possible to perform the same control as that of a conventional elevator (for example, control such as prevention of door-opening traveling).
　第１及び第２の論理回路２３ａ，２３ｂは、安全制御を実施し、その出力結果（自動運転の有効／無効）の論理積をとった後、第１及び第２のリレー２４ａ，２４ｂに出力する。第１及び第２のリレー２４ａ，２４ｂは、直列に接続されており、両方とも接点が閉じている（オンしている）場合のみ、自動運転が有効となるよう運転制御部２１に入力される。即ち、第１及び第２の論理回路２３ａ，２３ｂのどちらか一方でも、自動運転が無効となる指令が出力された場合は、かご３の自動運転は無効化される。 The first and second logic circuits 23a and 23b perform safety control, take the logical product of the output results (valid / invalid of automatic operation), and then output to the first and second relays 24a and 24b. To do. The first and second relays 24a and 24b are connected in series, and are input to the operation control unit 21 so that the automatic operation is effective only when the contacts are both closed (turned on). . That is, if either one of the first and second logic circuits 23a and 23b outputs a command that invalidates the automatic operation, the automatic operation of the car 3 is invalidated.
　また、出力結果は、第１及び第２の論理回路２３ａ，２３ｂに再び入力され、結果が正しく出力されているかどうかが診断される。さらに、第１及び第２の論理回路２３ａ，２３ｂは、自身の健全性をチェックするための自己診断機能を持つ。論理回路２３ａ，２３ｂにより異常が検出された場合、かご３の自動運転を無効化する出力を行う。 Also, the output result is input again to the first and second logic circuits 23a and 23b, and it is diagnosed whether the result is output correctly. Further, the first and second logic circuits 23a and 23b have a self-diagnosis function for checking their own soundness. When an abnormality is detected by the logic circuits 23a and 23b, an output for invalidating the automatic operation of the car 3 is performed.
　各論理回路２３ａ，２３ｂは、ソフトウェアを含むコンピュータ（運転制御部２１のコンピュータとは別のコンピュータ）により実現してもよい。各コンピュータは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、ＲＯＭ、ＲＡＭ及びＷＤＴ（Ｗａｔｃｈ　Ｄｏｇ　Ｔｉｍｅｒ）等を有している。そして、ＲＯＭ及びＲＡＭの読み込み及び書き込みに関する検査や、ＷＤＴによる時間監視が行われる。 The logic circuits 23a and 23b may be realized by a computer including software (a computer different from the computer of the operation control unit 21). Each computer has a CPU (Central Processing Unit), ROM, RAM, WDT (Watch Dog Timer) and the like. Then, inspections relating to reading and writing of ROM and RAM and time monitoring by WDT are performed.
　また、各論理回路２３ａ，２３ｂは、ＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ　Ｓｐｅｃｉｆｉｃ　Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）、ＦＰＧＡ（Ｆｉｅｌｄ－Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）、ＣＰＬＤ（Ｃｏｍｐｌｅｘ　Ｐｒｏｇｒａｍｍａｂｌｅ　Ｌｏｇｉｃ　Ｄｅｖｉｃｅ）、トランジスタ等を用いた単純な（電子）回路（論理回路）、又はリレー回路等で実現してもよい。 In addition, each logic circuit 23a, 23b uses ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), CPLD (Complex Programmable Logic), etc. Alternatively, it may be realized by a relay circuit or the like.
　保守作業装置２５には、ピット内保守運転モード切替スイッチ９、ピット内保守運転装置１０、かご上保守運転モード切替スイッチ１５及びかご上保守運転装置１６が含まれている。 The maintenance work device 25 includes a maintenance operation mode changeover switch 9 in the pit, a maintenance operation device 10 in the pit, a maintenance operation mode changeover switch 15 on the car 15 and a maintenance operation device 16 on the car.
　図３は図１の安全制御部２２における安全制御処理を示すフローチャートである。安全制御部２２は、自動運転が無効化されていない（有効である）間、図３の処理を繰り返し実行する。 FIG. 3 is a flowchart showing the safety control process in the safety control unit 22 of FIG. The safety control unit 22 repeatedly executes the process of FIG. 3 while the automatic operation is not invalidated (valid).
　安全制御処理では、まず入力信号の診断を行い（ステップＳ１）、異常があれば自動運転を無効化する（ステップＳ２）。異常がなければ、かごゲートスイッチ１７の判定を行う（ステップＳ３）。かごドア１３が全閉状態であれば、乗場ドアスイッチ６ａ，６ｂ，６ｃの判定を行う（ステップＳ４）。そして、いずれかの系統の乗場ドア５が開放状態であれば、自動運転を無効化する（ステップＳ２）。 In the safety control process, the input signal is first diagnosed (step S1), and if there is an abnormality, the automatic operation is invalidated (step S2). If there is no abnormality, the car gate switch 17 is determined (step S3). If the car door 13 is fully closed, the landing door switches 6a, 6b, 6c are determined (step S4). And if the landing door 5 of any system | strain is an open state, automatic operation will be invalidated (step S2).
　かごドア１３が戸開状態の場合、乗場ドアスイッチ６ａ，６ｂ，６ｃの判定を行い（ステップＳ５）、２系統以上の乗場ドア５が開放状態であれば、自動運転を無効化する（ステップＳ２）。 When the car door 13 is in the door open state, the landing door switches 6a, 6b, and 6c are determined (step S5). If the two or more landing doors 5 are in the open state, the automatic operation is invalidated (step S2). ).
　上記以外の場合、即ち、全ての乗場ドア５及びかごドア１３が閉鎖状態である場合、及びかごドア１３が開放状態で１系統の乗場ドア５のみが開放状態である場合には、冗長化された論理回路２３ａ，２３ｂの演算結果を照合する（ステップＳ６）。そして、演算結果が不一致であれば、自動運転を無効化する（ステップＳ２）。演算結果が一致している場合は、出力信号の診断を行う（ステップＳ７）。そして、出力信号の診断結果に異常があれば、自動運転を無効化する（ステップＳ２）。演算結果が一致し、信号に異常がなければ、処理を終了する。 In other cases, that is, when all the landing doors 5 and the car doors 13 are in a closed state, and when the car doors 13 are in an open state and only one landing door 5 is in an open state, redundancy is made. The operation results of the logic circuits 23a and 23b are collated (step S6). If the calculation results do not match, the automatic operation is invalidated (step S2). If the calculation results match, the output signal is diagnosed (step S7). If there is an abnormality in the diagnosis result of the output signal, the automatic operation is invalidated (step S2). If the calculation results match and there is no abnormality in the signal, the process ends.
　図４は図１の安全制御部２２における自動運転のリセット処理を示すフローチャートである。安全制御部２２は、自動運転の無効化が維持されている場合、図４の処理を繰り返し実行する。 FIG. 4 is a flowchart showing the automatic operation reset process in the safety control unit 22 of FIG. The safety control unit 22 repeatedly executes the process of FIG. 4 when the invalidation of the automatic driving is maintained.
　リセット処理では、まず入力信号の診断を行い（ステップＳ１１）、異常があれば自動運転無効化を維持する（ステップＳ１２）。異常がなければ、リセット信号入力の判定を行い（ステップＳ１３）、リセット信号が入力されていなければ、自動運転無効化を維持する（ステップＳ１２）。 In the reset process, first, an input signal is diagnosed (step S11), and if there is an abnormality, automatic operation invalidation is maintained (step S12). If there is no abnormality, a reset signal input determination is made (step S13), and if no reset signal is input, automatic operation invalidation is maintained (step S12).
　リセット信号が入力されていれば、かごゲートスイッチ１７の判定を行う（ステップＳ１４）。そして、かごドア１３が開放状態であれば、自動運転無効化を維持する（ステップＳ１２）。かごドア１３が全閉状態であれば、乗場ドアスイッチ６ａ，６ｂ，６ｃの判定を行う（ステップＳ１５）。そして、乗場ドア５が１箇所でも開放状態であれば、自動運転無効化を維持する（ステップＳ１２）。 If the reset signal is input, the car gate switch 17 is determined (step S14). And if the car door 13 is an open state, automatic driving | operation invalidation will be maintained (step S12). If the car door 13 is fully closed, the landing door switches 6a, 6b, 6c are determined (step S15). If even one landing door 5 is in an open state, automatic operation invalidation is maintained (step S12).
　全ての乗場ドア５が全閉状態であれば、冗長化された論理回路２３ａ，２３ｂの演算結果を照合する（ステップＳ１６）。そして、演算結果が不一致であれば、自動運転無効化を維持する（ステップＳ１２）。演算結果が一致している場合は、出力信号の診断を行う（ステップＳ１７）。そして、出力信号の診断結果に異常があれば、自動運転無効化を維持する（ステップＳ１２）。演算結果が一致し、信号に異常がなければ、自動運転無効化を解除（自動運転を有効化）し（ステップＳ１８）、図３に示す安全制御処理に切り替える。 If all the landing doors 5 are fully closed, the operation results of the redundant logic circuits 23a and 23b are collated (step S16). If the calculation results do not match, the automatic operation invalidation is maintained (step S12). If the calculation results match, the output signal is diagnosed (step S17). If there is an abnormality in the output signal diagnosis result, the automatic operation invalidation is maintained (step S12). If the calculation results match and there is no abnormality in the signal, automatic operation invalidation is canceled (automatic operation is activated) (step S18), and the process is switched to the safety control process shown in FIG.
　このようなエレベータの安全制御装置では、例えば、かご３が走行中又はある階に戸閉状態又は戸開状態で停止中に、保守員が保守作業を行うためにかご３上もしくはピット１ａに通じる乗場ドア５を開いたことを検出し、自動運転を自動的に無効化することで、保守員が自動運転無効化操作を忘れた場合にでも、保守員にとって不意にかご３が走行することを確実に防止でき、保守員の安全を確保することが可能である。しかも、エレベータに既設の機器を効率的に利用することで、保守員の昇降路１への移動を低コストで検知することができる。 In such an elevator safety control device, for example, when the car 3 is traveling or stopped on a certain floor in a door-closed state or in a door-open state, a maintenance worker communicates with the car 3 or the pit 1a to perform maintenance work. By detecting that the landing door 5 is opened and automatically disabling automatic operation, even if the maintenance staff forgets the automatic operation invalidation operation, the car 3 will run unexpectedly for the maintenance staff. This can be reliably prevented and the safety of maintenance personnel can be ensured. Moreover, by efficiently using the existing equipment in the elevator, the movement of the maintenance staff to the hoistway 1 can be detected at a low cost.
　実施の形態２．
　次に、図５はこの発明の実施の形態２による機械室レスタイプのエレベータを示す構成図である。実施の形態２では、保守員がかご３上に乗り込むための階床が特定されている場合（例えば、乗場ドア５を乗場側から開放するための解錠装置が特定階のみに設けられている場合）について説明する。このような場合、乗場ドアスイッチ６は、最下階乗場ドアスイッチ６ａ、特定階乗場ドアスイッチ６ｄ、及びその他の階に設けられた非特定階乗場ドアスイッチ６ｅの３系統に分けることができる。 Embodiment 2. FIG.
5 is a block diagram showing a machine room-less type elevator according to Embodiment 2 of the present invention. In the second embodiment, when a floor for maintenance personnel to get on the car 3 is specified (for example, an unlocking device for opening the landing door 5 from the landing side is provided only on the specific floor. Case). In such a case, the landing door switch 6 can be divided into three systems: a lowest floor landing door switch 6a, a specific floor landing door switch 6d, and a non-specific floor landing door switch 6e provided on another floor.
　安全制御論理１．
　安全制御部２２は、かごゲートスイッチ１７及び３系統の乗場ドアスイッチ６ａ，６ｄ，６ｅの状態を監視し、かごゲートスイッチ１７がオンであるとき、即ちかごドア１３が全閉状態であるときに、いずれかの乗場ドアスイッチ６ａ，６ｄ，６ｅがオフとなった場合、即ちいずれかの乗場ドア５が開放したことを検出した場合に、自動運転を無効化する。 Safety control logic
The safety control unit 22 monitors the state of the car gate switch 17 and the three system landing door switches 6a, 6d, and 6e. When the car gate switch 17 is on, that is, when the car door 13 is fully closed. When any of the landing door switches 6a, 6d, 6e is turned off, that is, when it is detected that any of the landing doors 5 is opened, the automatic operation is invalidated.
　安全制御論理２．
　安全制御部２２は、かごゲートスイッチ１７がオフであるとき、即ちかごドア１３が開放されているときに、乗場ドアスイッチ６ａ，６ｄ，６ｅのうちの２系統以上がオフとなった場合、即ち２系統以上の乗場ドア５が戸開したことを検出した場合に、自動運転を無効化する。他の構成は、実施の形態１と同様である。 Safety control logic
When the car gate switch 17 is off, that is, when the car door 13 is opened, the safety control unit 22 turns off two or more of the landing door switches 6a, 6d, and 6e, that is, When it is detected that two or more landing doors 5 are opened, automatic operation is invalidated. Other configurations are the same as those in the first embodiment.
　このような構成によっても、エレベータに既設の機器を効率的に利用することで、保守員の昇降路１への移動を低コストで検知することができる。 Even with such a configuration, it is possible to detect the movement of the maintenance staff to the hoistway 1 at low cost by efficiently using the existing equipment in the elevator.
　なお、実施の形態１、２では、最下階乗場ドアスイッチ６ａを独立した１系統としたが、保守員が最下階の乗場ドア５を開放してピット１ａ内に移動しない場合等には、最下階の乗場ドアスイッチ６を独立した１系統としなくてもよい。
　また、実施の形態１、２では、乗場ドアスイッチ６を３系統に分けたが、４系統以上に分割してもよい。 In the first and second embodiments, the lowest floor landing door switch 6a is one independent system. However, when the maintenance staff opens the lowermost landing door 5 and does not move into the pit 1a, etc. The landing door switch 6 on the lowest floor need not be an independent system.
In the first and second embodiments, the landing door switch 6 is divided into three systems, but may be divided into four or more systems.
　実施の形態３．
　次に、図６はこの発明の実施の形態３による機械室レスタイプのエレベータを示す構成図である。この例では、全ての階の乗場ドア５の開閉状態を個別に検知するように、乗場ドアスイッチ６が階床数と同数の系統に分けられている。即ち、全ての乗場ドアスイッチ６の信号がそれぞれ独立した系統としてエレベータ制御装置４に入力されている。 Embodiment 3 FIG.
Next, FIG. 6 is a block diagram showing a machine room-less type elevator according to Embodiment 3 of the present invention. In this example, the landing door switches 6 are divided into the same number of floors as the number of floors so that the open / close states of the landing doors 5 of all the floors are individually detected. That is, the signals of all the landing door switches 6 are input to the elevator control device 4 as independent systems.
　安全制御論理１．
　安全制御部２２は、かごゲートスイッチ１７及び全系統の乗場ドアスイッチ６の状態を監視し、かごゲートスイッチ１７がオンであるとき、即ちかごドア１３が全閉状態であるときに、いずれかの乗場ドアスイッチ６がオフとなった場合、即ちいずれかの乗場ドア５が開放したことを検出した場合に、自動運転を無効化する。 Safety control logic
The safety control unit 22 monitors the state of the car gate switch 17 and the landing door switches 6 of all systems, and when the car gate switch 17 is on, that is, when the car door 13 is fully closed, When the landing door switch 6 is turned off, that is, when it is detected that any of the landing doors 5 is opened, the automatic operation is invalidated.
　安全制御論理２．
　安全制御部２２は、かごゲートスイッチ１７がオフであるとき、即ちかごドア１３が開放されているときに、乗場ドアスイッチ６のうちの２系統以上がオフとなった場合、即ち２箇所以上の乗場ドア５が戸開したことを検出した場合に、自動運転を無効化する。他の構成は、実施の形態１と同様である。 Safety control logic
When the car gate switch 17 is off, that is, when the car door 13 is opened, the safety control unit 22 is turned off when two or more of the landing door switches 6 are turned off, that is, at two or more places. When it is detected that the landing door 5 is opened, the automatic operation is invalidated. Other configurations are the same as those in the first embodiment.
　このような構成によっても、エレベータに既設の機器を効率的に利用することで、保守員の昇降路１への移動を低コストで検知することができる。 Even with such a configuration, it is possible to detect the movement of the maintenance staff to the hoistway 1 at low cost by efficiently using the existing equipment in the elevator.
　なお、実施の形態１～３では、保守員の昇降路１への移動を検知したときに、かご３の自動運転を無効化するが、運転制御部２１の運転モードを手動運転モードに切り替えてもよい。また、保守員の昇降路１への移動を検知したときに、エレベータの安全回路（図示せず）を遮断するようにしてもよい。この場合、巻上機モータや巻上機ブレーキへの通電が遮断されるため、運転制御部２１を介さずにかご３を停止させることができる。
　また、実施の形態１～３では、各種スイッチから安全制御部２２までの接続を有線で行ったが、無線で行ってもよい。
　さらに、実施の形態１～３では、リセットスイッチ１１，１２が昇降路１外に設けられているが、昇降路１内に設けてもよい。
　さらにまた、実施の形態１～３では、巻上機２やエレベータ制御装置４が昇降路１内の下部に配置されているが、このレイアウトに限定されるものではなく、これらが例えば昇降路１内の上部に配置されたエレベータにも、この発明は適用できる。
　また、実施の形態１～３では、機械室レスタイプのエレベータを示したが、昇降路内で保守作業を行うエレベータであれば、あらゆるタイプのエレベータにこの発明を適用することができる。例えば、機械室付きのエレベータ、ダブルデッキ式のエレベータ、ロープレスタイプのエレベータ、リニアモータエレベータ、油圧エレベータ等にも、この発明は適用できる。 In the first to third embodiments, the automatic operation of the car 3 is invalidated when the movement of the maintenance worker to the hoistway 1 is detected, but the operation mode of the operation control unit 21 is switched to the manual operation mode. Also good. Further, when the movement of the maintenance worker to the hoistway 1 is detected, an elevator safety circuit (not shown) may be shut off. In this case, since the energization to the hoisting machine motor and the hoisting machine brake is interrupted, the car 3 can be stopped without going through the operation control unit 21.
In the first to third embodiments, the connection from the various switches to the safety control unit 22 is performed by wire, but may be performed wirelessly.
Further, in the first to third embodiments, the reset switches 11 and 12 are provided outside the hoistway 1, but may be provided inside the hoistway 1.
Furthermore, in the first to third embodiments, the hoisting machine 2 and the elevator control device 4 are disposed in the lower part of the hoistway 1, but the present invention is not limited to this layout. The present invention can also be applied to an elevator disposed in the upper part.
In the first to third embodiments, the machine room-less type elevator is shown. However, the present invention can be applied to any type of elevator as long as the elevator performs maintenance work in the hoistway. For example, the present invention can be applied to an elevator with a machine room, a double deck type elevator, a low press type elevator, a linear motor elevator, a hydraulic elevator, and the like.

Claims (11)

  1. 　かごドアの開放を検出するかごゲートスイッチ、
    　複数の乗場ドアの開放を検出する複数の乗場ドアスイッチ、及び
    　前記かごゲートスイッチ及び前記乗場ドアスイッチから入力される情報に基づいて安全制御を行う安全制御部
    　を備え、
    　前記乗場ドアスイッチは、複数の系統に分けられており、
    　前記安全制御部は、前記乗場ドアの開放を前記乗場ドアスイッチの系統毎に独立して認識可能であり、前記かごゲートスイッチが戸閉状態を示しているときに、いずれかの系統の前記乗場ドアスイッチが戸開状態を示した場合、及び前記かごゲートスイッチが戸開状態を示しているときに、２系統以上の前記乗場ドアスイッチが戸開状態を示した場合に、保守員の昇降路への移動を検知することを特徴とするエレベータの安全制御装置。     Car gate switch that detects opening of the car door,
    A plurality of landing door switches that detect opening of a plurality of landing doors, and a safety control unit that performs safety control based on information input from the car gate switch and the landing door switch,
    The landing door switch is divided into a plurality of systems,
    The safety control unit can recognize the opening of the landing door independently for each system of the landing door switch, and when the car gate switch indicates a door-closed state, the landing of any system When a door switch indicates a door open state, and when the car gate switch indicates a door open state, when two or more of the landing door switches indicate a door open state, a hoistway for maintenance personnel An elevator safety control device characterized by detecting movement to the elevator.
  2. 　前記乗場ドアスイッチの系統は、１階床毎に交互に前記乗場ドアの開放を検出する２系統を含む請求項１記載のエレベータの安全制御装置。 The elevator safety control device according to claim 1, wherein the hall door switch system includes two systems that alternately detect the opening of the hall door for each floor.
  3. 　前記乗場ドアスイッチの系統は、最下階の前記乗場ドアの開放を検出する系統と、最下階を除く１階床毎に交互に前記乗場ドアの開放を検出する２系統との３系統を含む請求項１記載のエレベータの安全制御装置。 The landing door switch system includes three systems: a system that detects the opening of the landing door on the lowest floor and two systems that detect the opening of the landing door alternately for each floor except the lowest floor. The elevator safety control device according to claim 1, comprising:
  4. 　前記乗場ドアスイッチの系統は、保守員が前記昇降路に入る場合に開放される特定階の前記乗場ドアの開放を検出する系統と、その他の階の前記乗場ドアの開放を検出する系統とを含む請求項１記載のエレベータの安全制御装置。 The landing door switch system includes a system that detects opening of the landing door on a specific floor that is opened when a maintenance worker enters the hoistway, and a system that detects opening of the landing door on other floors. The elevator safety control device according to claim 1, comprising:
  5. 　前記乗場ドアスイッチは、系統毎に直列に接続されている請求項１から請求項４までのいずれか１項に記載のエレベータの安全制御装置。 The elevator safety control device according to any one of claims 1 to 4, wherein the landing door switch is connected in series for each system.
  6. 　前記乗場ドアスイッチは、全ての階の前記乗場ドアの開放を個別に検知するように、階床数と同数の系統に分けられている請求項１記載のエレベータの安全制御装置。 The elevator safety control device according to claim 1, wherein the landing door switch is divided into the same number of floors as the number of floors so as to individually detect the opening of the landing doors on all floors.
  7. 　前記安全制御部は、保守員の前記昇降路への移動を検知すると、かごの自動運転を無効化する請求項１から請求項６までのいずれか１項に記載のエレベータの安全制御装置。 The elevator safety control device according to any one of claims 1 to 6, wherein the safety control unit invalidates automatic operation of a car when detecting a movement of a maintenance worker to the hoistway.
  8. 　前記安全制御部は、前記かごの自動運転が無効化されると、リセットスイッチが操作され、かつ全ての前記乗場ドア及び前記かごドアの全閉状態を確認するまでは、自動運転の無効化を継続する請求項７記載のエレベータの安全制御装置。 When the automatic operation of the car is disabled, the safety control unit disables the automatic operation until the reset switch is operated and all the landing doors and the car doors are fully closed. 8. The elevator safety control device according to claim 7, which is continued.
  9. 　前記安全制御部は、保守員の前記昇降路への移動を検知すると、かごの運転モードを手動運転モードに切り替える請求項１から請求項６までのいずれか１項に記載のエレベータの安全制御装置。 The elevator safety control device according to any one of claims 1 to 6, wherein the safety control unit switches an operation mode of a car to a manual operation mode when detecting a movement of a maintenance worker to the hoistway. .
  10. 　前記安全制御部は、保守員の前記昇降路への移動を検知すると、安全回路を遮断することにより、かごを昇降させる巻上機及び／又はブレーキへの通電を遮断する請求項１から請求項６までのいずれか１項に記載のエレベータの安全制御装置。 The said safety control part interrupts | blocks the electricity supply to the winding machine and / or brake which raise / lower a cage | basket | car by interrupting | blocking a safety circuit, if the movement to the said hoistway of a maintenance worker is detected. The elevator safety control device according to any one of claims 6 to 6.
  11. 　前記安全制御部は、同一の処理を行う複数の論理回路を有し冗長化されている請求項１から請求項１０までのいずれかに１項に記載のエレベータの安全制御装置。 The elevator safety control device according to any one of claims 1 to 10, wherein the safety control unit includes a plurality of logic circuits that perform the same processing and is made redundant.
PCT/JP2011/052133 2011-02-02 2011-02-02 Safety control device for elevator WO2012105008A1 (en)

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PCT/JP2011/052133 WO2012105008A1 (en) 2011-02-02 2011-02-02 Safety control device for elevator
KR1020137022681A KR101545797B1 (en) 2011-02-02 2011-02-02 Safety control device for elevator
EP11857587.7A EP2671836B1 (en) 2011-02-02 2011-02-02 Safety control device for elevator
JP2012555635A JP5784049B2 (en) 2011-02-02 2011-02-02 Elevator safety control device
CN201180065486.1A CN103328366B (en) 2011-02-02 2011-02-02 The safety control of elevator

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