WO2013084279A1 - Elevator safety control device - Google Patents

Elevator safety control device Download PDF

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Publication number
WO2013084279A1
WO2013084279A1 PCT/JP2011/078079 JP2011078079W WO2013084279A1 WO 2013084279 A1 WO2013084279 A1 WO 2013084279A1 JP 2011078079 W JP2011078079 W JP 2011078079W WO 2013084279 A1 WO2013084279 A1 WO 2013084279A1
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WO
WIPO (PCT)
Prior art keywords
safety control
car
landing door
switches
control device
Prior art date
Application number
PCT/JP2011/078079
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French (fr)
Japanese (ja)
Inventor
柴田　益誠
和則 鷲尾
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.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2013547972A priority Critical patent/JP5859023B2/en
Priority to CN201180074776.2A priority patent/CN103917471B/en
Priority to PCT/JP2011/078079 priority patent/WO2013084279A1/en
Priority to DE112011105918.3T priority patent/DE112011105918B4/en
Publication of WO2013084279A1 publication Critical patent/WO2013084279A1/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

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 door sensor is separated into odd floors and even floors to detect the entry of persons without permission to enter the hoistway (see, for example, Patent Document 3).
  • Patent Documents 1 and 2 there is a problem that additional equipment for detecting the movement of the maintenance staff to the hoistway is required, resulting in an increase in cost.
  • Patent Document 3 when the number of floors is increased, it is necessary to amplify the applied voltage in order to cope with the increase in the contact resistance of the landing door switch, which increases the cost.
  • 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.
  • An elevator safety control device includes at least one car gate switch that detects opening of a corresponding car door, a plurality of landing door switches that detect opening of a corresponding landing door, and a car gate switch and a landing door switch.
  • a safety control unit that performs safety control based on information input from, and the landing door switches on the floors other than the lowest floor are divided into three or more systems, and at least one system has two The above landing door switches are included, and the safety control unit can recognize the opening of the landing doors independently for each system of the landing door switches, and all the car gate switches indicate the door closed state.
  • the elevator safety control device can detect the movement of the maintenance personnel to the hoistway at low cost by efficiently using the existing equipment.
  • 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 machine 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.
  • 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) that is manually operated by maintenance personnel. And are included.
  • the safety control unit 22 can instruct the operation control unit 21 about the operation mode.
  • the building in which the elevator according to Embodiment 1 is installed is a short-floor building in which the space between the upper and lower adjacent floors is small. Therefore, a first car door 13 a is provided at the front of the car 3, a second car door 13 b is provided at the back of the car 3, and landings are alternately (staggered) before and after the car 3. Has been placed.
  • the hall may be alternately arranged at the front portion and the side portion of the car 3. In this case, the second car door 13 b is arranged at the side portion of the car 3. .
  • the hall entrance / exit on each floor is opened and closed by the hall door 5.
  • the maintenance staff 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.
  • the maintenance staff By opening the landing door 5 on the floor two above the floor where the car 3 is stopped, the maintenance staff can move onto the car 3.
  • 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 switches 6 other than the lowest floor are divided into three systems, and at least one system includes two or more landing door switches 6.
  • a plurality of landing door switches 6b (system 1) for detecting the opening of the landing door 5 on the floor, and a plurality of landing door switches 6c (system 2) for detecting the opening of the landing door 5 on the (lowermost floor + 3k + 2) floor
  • a plurality of landing door switches 6d (system 3) for detecting the opening of the landing door 5 on the (lowermost floor + 3k + 3) floor. Accordingly, the landing door switches 6 on the three consecutive floors of the intermediate floor are divided into different systems.
  • the landing door switch 6 on the lowest floor is an independent system different from the above three systems (the landing door switch 6a in FIG. 1).
  • the signal of the landing door switch 6 is input to the elevator control device 4 independently for each of the above systems.
  • Each landing door switch 6b, 6c, and 6d is connected in series for each system.
  • the elevator control device 4 includes a landing door 5 on the lowermost floor, a landing door 5 on the (lowermost floor + 3k + 1) floor, a landing door 5 on the (lowermost floor + 3k + 2) floor, and a landing on the (lowermost floor + 3k + 3) floor.
  • the opening of the door 5 can be recognized independently for each system of the landing door switch 6.
  • the number of floors here shall not be counted as an intermediate floor as 1.5 floors, but as an integer floor in order from the bottom.
  • the floor referred to here is not only the floor where the car 3 stops in normal operation, but also all floors where the car 3 stops and people can get on and off, such as floors with emergency exits and work doors. Point to.
  • 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 third floor) other than the lowest floor is provided with a second reset switch 12 for resetting the operation mode 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.
  • a door operator (car upper station) 14 for controlling the opening and closing of the car doors 13a and 13b 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 switching 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 (wiring is omitted).
  • 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 first car door 13a is provided with a first car gate switch 17a for detecting the open state of the first car door 13a.
  • the second car door 13b is provided with a second car gate switch 17b for detecting the open state of the second car door 13b.
  • the first and second car gate switches 17a and 17b are connected in series with each other.
  • the car gate switches 17a and 17b may be individually connected to the control device 4.
  • a maintenance operation lower limit switch (not shown) is provided in the lower part of the hoistway 1 to limit the lowering of the car 3 during the maintenance operation.
  • a maintenance operation upper limit switch (not shown) is provided at the upper part of the hoistway 1 to restrict the ascent of the car 3 during maintenance operation.
  • the safety control unit 22 When all the car gate switches 17a and 17b indicate the door-closed state, the safety control unit 22 indicates that the maintenance person's hoistway 1 is used when the landing door switch 6 of any system indicates the door-open state. Detects movement to, and disables automatic operation. Further, the safety control unit 22 can also be used by maintenance personnel when any of the car gate switches 17a and 17b indicates a door open state, and when two or more landing door switches 6 indicate a door open state. The movement 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 doors 13a and 13b are closed and a case where the car doors 13b are opened, the following safety control logics 1 and 2 are obtained.
  • Safety control logic The safety control unit 22 monitors the states of the car gate switches 17a and 17b, the lowermost landing door switch 6a, and the three system landing door switches 6b, 6c, and 6d other than the lowermost floor, and the car gate switches 17a, When both of the door door switches 6a, 6b, 6c, 6d are turned off when both of the doors 17b are on, that is, when all the car doors 13a, 13b are fully closed, When it is detected that the landing door 5 is opened (not fully closed), the automatic operation is invalidated.
  • Safety control logic When one of the car gate switches 17a, 17b is off, that is, when one of the car doors 13a, 13b is opened, the safety control unit 22 is the landing door switch 6a, 6b, 6c, 6d. When two or more systems are turned off, that is, when it is detected that the landing doors 5 of two or more systems are opened, the 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 floor two floors above the stop floor of the car 3 (or after the car 3 is stopped just below the floor to be boarded). Get on the car 3.
  • 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 car is stopped on the floor where the car 3 during automatic operation is located, and the maintenance person takes the pit 1a or car with the car door 13a or the car door 13b and the landing door 5 facing the car door 13a open. It is possible to move up the car 3.
  • the control of the safety control logic 2 leads to the pit 1a even if the car door 13a or the car door 13b and the landing door 5 facing the car door 13a 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 lowest floor or the landing door 5 on the floor 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 the landing door 5 and the car doors 13a and 13b 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 and the maintenance operation upper limit switch.
  • FIG. 2 is a block diagram showing the safety control device for the elevator shown in FIG.
  • the safety control unit 22 is redundant (here, duplicated) in order to ensure the reliability necessary for 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, 6d, 11, 12, 17a, and 17b 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, 6d and the car gate switches 17a, 17b 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 four systems of the landing door switches 6a, 6b, 6c and 6d (connected in series). An equivalent 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 switches 17a and 17b are determined (step S3). If the car doors 13a and 13b are fully closed, the landing door switches 6a, 6b, 6c and 6d are determined (step S4). And if the landing door 5 of any system
  • step S5 If any of the car doors 13a, 13b is in the open state, the landing door switches 6a, 6b, 6c, 6d are determined (step S5). If the two or more landing doors 5 are in the open state, automatic operation is performed. Is invalidated (step S2).
  • step S6 the operation results of the redundant logic circuits 23a and 23b are collated. 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). If any of the car doors 13a and 13b is in an open state, the automatic operation invalidation is maintained (step S12). If the car doors 13a, 13b are fully closed, the landing door switches 6a, 6b, 6c, 6d are determined (step S15). If even one landing door 5 is in an open state, automatic operation invalidation is maintained (step S12).
  • 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.
  • the landing door switch 6 since the landing door switch 6 is divided into three or more systems, it is not necessary to amplify the applied voltage in order to cope with the increase in the contact resistance of the landing door switch 6 even when the number of floors is large. For this reason, the cost increase for applied voltage amplification can be prevented, and the movement of the maintenance personnel to the hoistway 1 can be detected at a low cost even for a building having a large number of floors.
  • the floor door switches 6 except for the lowest floor are divided into three systems, and the three consecutive floor door switches 6 are divided into different systems. Even in this case, the movement of the maintenance staff onto the car 3 can be detected more reliably.
  • 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 is divided into systems as in the first embodiment.
  • the car 3 is provided with only one car door 13 and one car gate switch 17. Other configurations are the same as those in the first embodiment.
  • the landing door switch 6 since the landing door switch 6 is divided into multiple systems, it is not necessary to amplify the applied voltage to cope with the increase in the contact resistance of the landing door switch 6 even when the number of floors is large. For this reason, the cost increase for applied voltage amplification can be prevented, and the movement of the maintenance personnel to the hoistway 1 can be detected at a low cost even for a building having a large number of floors.
  • FIG. 6 is a block diagram showing a machine room-less type elevator according to Embodiment 3 of the present invention.
  • the system of the landing door switch 6 is divided into a system on the lowest floor and a system on other floors.
  • the landing door switches 6 on floors other than the lowest floor are divided into three systems so that two consecutive floors are detected by different systems.
  • Other configurations are the same as those in the second embodiment.
  • FIG. 7 is a block diagram showing a machine room-less type elevator according to Embodiment 4 of the present invention
  • FIG. 8 is a block diagram showing the elevator safety control device of FIG.
  • the system of the landing door switch 6 is divided into the system of the lowest floor (the landing door switch 6a) and the system of other floors.
  • the landing door switches 6 on floors other than the lowest floor are divided into four systems (landing door switches 6b to 6e) so that three consecutive floors can be detected by different systems.
  • the input of the landing door switch 6 to the safety control unit 22 is the above five systems. Other configurations are the same as those in the first embodiment.
  • FIG. 9 is a block diagram showing a machine room-less type elevator according to Embodiment 5 of the present invention.
  • the system of the landing door switch 6 is divided into a system on the lowest floor and a system on other floors.
  • the landing door switches 6 on floors other than the lowest floor are divided into four systems so that three consecutive floors are detected by different systems.
  • the input of the landing door switch 6 to the safety control unit 22 is the above five systems.
  • Other configurations are the same as those in the second embodiment.
  • the lowest floor landing door switch 6a is one independent system. However, when a maintenance person opens the lowermost landing door 5 and does not move into the pit 1a, etc.
  • the landing door switch 6 on the lowest floor may not be an independent system. That is, the landing door switch 6 on the lowest floor may belong to any system of the landing door switches 6 on floors other than the lowest floor.
  • the landing door switches 6 other than the lowest floor are divided into three systems.
  • the landing door switches 6 other than the lowest floor are divided into four systems. You may divide into the following systems.
  • 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. Furthermore, in the first to fifth 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 arranged 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 on the top of the elevator.
  • the machine room-less type elevator is shown in the first to fifth embodiments, the present invention can be applied to any type of elevator as long as the elevator performs maintenance work in the hoistway.
  • elevators with machine rooms, double deck type elevators, 1-shaft multi-car type elevators in which multiple cars run independently in the same hoistway low press type elevators, linear motor elevators, hydraulic elevators, etc.
  • the present invention is applicable.

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Abstract

An elevator safety control device, wherein landing door switches at floors except the lowest floor are divided into three or more lines. Two or more landing door switches are included in at least one line. A safety control unit is able to recognize the opening of a landing door in the respective lines of landing door switches independently of each other. In the case where a landing door switch of any line indicates a door open state when all car gate switches indicate a door closed state, a safety control unit detects the movement of a maintenance worker to a hoistway, and also in the case where the landing door switches of two or more lines indicate the door open state when any of the car gate switches indicates the door open state, the safety control unit detects the movement of the maintenance worker to the 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 maintenance personnel have 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).
　また、従来の昇降路アクセス検知システムでは、ドアセンサを奇数階と偶数階とで系統を分離することで、立ち入り許可の無い者の昇降路への侵入を検知する（例えば、特許文献３参照）。 Also, in the conventional hoistway access detection system, the door sensor is separated into odd floors and even floors to detect the entry of persons without permission to enter the hoistway (see, for example, Patent Document 3).
特開平８－９１７３０号公報JP-A-8-91730 特表２００４－５３４７０７０号公報JP-T-2004-5347070 特表２００５－５０９５８１号公報JP 2005-509581 A
　特許文献１、２に示した従来装置では、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 apparatuses shown in Patent Documents 1 and 2, there is a problem that additional equipment for detecting the movement of the maintenance staff to the hoistway is required, resulting in an increase in cost.
　また、特許文献３に示した従来装置では、階床数が多くなると、乗場ドアスイッチの接触抵抗増加への対応のために印可電圧を増幅する必要が生じ、コストが高くなるという問題がある。 Further, in the conventional device shown in Patent Document 3, when the number of floors is increased, it is necessary to amplify the applied voltage in order to cope with the increase in the contact resistance of the landing door switch, which increases the cost.
　さらに、上下に隣接する階床の間隔が小さい短階床のビルでは、かごの前後にドアが設けられ、乗場がかごの前後に交互に配置されている場合がある。このような場合、かごの停止階の２つ上の階床がかご上とほぼ同じ高さになる。これに対して、特許文献３に示した従来装置では、停止階の乗場ドアと２つ上の階床の乗場ドアとが同じ系統であるため、２つ上の階床からかご上への保守員の乗り込みが検知できず、保守員の昇降路への移動を検知できない場合がある。 Furthermore, in a short-floor building where the space between adjacent floors is small, there are cases where doors are provided before and after the car, and landings are alternately arranged before and after the car. In such a case, the floor two levels above the stop floor of the car is almost the same height as the car. On the other hand, in the conventional apparatus shown in Patent Document 3, since the landing door on the stop floor and the landing door on the second floor are the same system, maintenance from the second floor to the top of the car is performed. There is a case where it is impossible to detect the entry of a worker and to detect the movement of the maintenance worker to the hoistway.
　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、対応するかごドアの開放を検出する少なくとも１つのかごゲートスイッチ、対応する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、最下階を除く階床の乗場ドアスイッチが３つ以上の系統に分けられており、少なくとも１つの系統には、２つ以上の乗場ドアスイッチが含まれており、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、全ての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に、保守員の昇降路への移動を検知し、また、いずれかの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も、保守員の昇降路への移動を検知する。 An elevator safety control device according to the present invention includes at least one car gate switch that detects opening of a corresponding car door, a plurality of landing door switches that detect opening of a corresponding landing door, and a car gate switch and a landing door switch. Is equipped with a safety control unit that performs safety control based on information input from, and the landing door switches on the floors other than the lowest floor are divided into three or more systems, and at least one system has two The above landing door switches are included, and the safety control unit can recognize the opening of the landing doors independently for each system of the landing door switches, and all the car gate switches indicate the door closed state. When the landing door switch of any system shows the door open state, the movement of the maintenance staff to the hoistway is detected, and either of the car gate switches When showing the opened state, two or more systems of landing door switches in each case showing a door open state, to detect the movement of the maintenance personnel of the elevator shaft.
　この発明のエレベータの安全制御装置は、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。 The elevator safety control device according to the present invention can detect the movement of the maintenance personnel to the hoistway at low cost by efficiently using the existing equipment.
この発明の実施の形態１によるエレベータを示す構成図である。It is a block diagram which shows the 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によるエレベータを示す構成図である。It is a block diagram which shows the elevator by Embodiment 2 of this invention. この発明の実施の形態３によるエレベータを示す構成図である。It is a block diagram which shows the elevator by Embodiment 3 of this invention. この発明の実施の形態４によるエレベータを示す構成図である。It is a block diagram which shows the elevator by Embodiment 4 of this invention. 図７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. この発明の実施の形態５によるエレベータを示す構成図である。It is a block diagram which shows the elevator by Embodiment 5 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 machine 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、保守員が手動で運転操作する保守運転モード（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) that is manually operated by maintenance personnel. And are included. The safety control unit 22 can instruct the operation control unit 21 about the operation mode.
　実施の形態１のエレベータが設置されているビルは、上下に隣接する階床の間隔が小さい短階床のビルである。このため、かご３の前部に第１のかごドア１３ａが設けられており、かご３の背部に第２のかごドア１３ｂが設けられており、乗場がかご３の前後に交互（互い違い）に配置されている。なお、乗場は、建物の形態によっては、かご３の前部と側部とに交互に配置されていることもあり、この場合、第２のかごドア１３ｂはかご３の側部に配置される。 The building in which the elevator according to Embodiment 1 is installed is a short-floor building in which the space between the upper and lower adjacent floors is small. Therefore, a first car door 13 a is provided at the front of the car 3, a second car door 13 b is provided at the back of the car 3, and landings are alternately (staggered) before and after the car 3. Has been placed. In addition, depending on the form of the building, the hall may be alternately arranged at the front portion and the side portion of the car 3. In this case, the second car door 13 b is arranged at the side portion of the car 3. .
　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。かご３が停止している階床の２つ上の階床の乗場ドア５を開放することにより、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. By opening the landing door 5 on the floor two above the floor where the car 3 is stopped, the maintenance staff can move onto the car 3.
　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、最下階以外の乗場ドアスイッチ６は、３つの系統に分けられており、少なくとも１つの系統には２つ以上の乗場ドアスイッチ６が含まれている。この例では、最下階以外の階について連続する３つの階床に異なる系統が対応するように、（最下階＋３ｋ＋１）（ｋは０以上の整数、即ち、ｋ＝０，１，２・・・）階の乗場ドア５の開放を検出する複数の乗場ドアスイッチ６ｂ（系統１）、（最下階＋３ｋ＋２）階の乗場ドア５の開放を検出する複数の乗場ドアスイッチ６ｃ（系統２）、及び（最下階＋３ｋ＋３）階の乗場ドア５の開放を検出する複数の乗場ドアスイッチ６ｄ（系統３）の３つの系統に分けられている。これにより、中間階の連続した３つの階床の乗場ドアスイッチ６は、互いに異なる系統に分けられている。 Further, the landing door switches 6 other than the lowest floor are divided into three systems, and at least one system includes two or more landing door switches 6. In this example, (lowermost floor + 3k + 1) (k is an integer greater than or equal to 0, that is, k = 0, 1, 2,..., So that different systems correspond to three consecutive floors other than the lowermost floor. ..) A plurality of landing door switches 6b (system 1) for detecting the opening of the landing door 5 on the floor, and a plurality of landing door switches 6c (system 2) for detecting the opening of the landing door 5 on the (lowermost floor + 3k + 2) floor And a plurality of landing door switches 6d (system 3) for detecting the opening of the landing door 5 on the (lowermost floor + 3k + 3) floor. Accordingly, the landing door switches 6 on the three consecutive floors of the intermediate floor are divided into different systems.
　さらに、最下階の乗場ドアスイッチ６は、上記の３つの系統とは別の独立した系統となっている（図１では乗場ドアスイッチ６ａ）。 Furthermore, the landing door switch 6 on the lowest floor is an independent system different from the above three systems (the landing door switch 6a in FIG. 1).
　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、各乗場ドアスイッチ６ｂ、６ｃ及び６ｄ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、（最下階＋３ｋ＋１）階の乗場ドア５、（最下階＋３ｋ＋２）階の乗場ドア５、及び（最下階＋３ｋ＋３）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. Each landing door switch 6b, 6c, and 6d is connected in series for each system. Accordingly, the elevator control device 4 includes a landing door 5 on the lowermost floor, a landing door 5 on the (lowermost floor + 3k + 1) floor, a landing door 5 on the (lowermost floor + 3k + 2) floor, and a landing on the (lowermost floor + 3k + 3) floor. The opening of the door 5 can be recognized independently for each system of the landing door switch 6.
　なお、ここでの階数は、中間階を１．５階等と数えず、下から順に整数階として数えるものとする。また、ここで言う階床は、通常運行でかご３が停止する階のみならず、非常口や作業用ドアのある階床等、かご３が停止し人が乗り降りすることができる全ての階床を指す。 The number of floors here shall not be counted as an intermediate floor as 1.5 floors, but as an integer floor in order from the bottom. In addition, the floor referred to here is not only the floor where the car 3 stops in normal operation, but also all floors where the car 3 stops and people can get on and off, such as floors with emergency exits and work doors. Point to.
　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３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 third floor) other than the lowest floor is provided with a second reset switch 12 for resetting the operation mode 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３上には、かごドア１３ａ，１３ｂ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（配線省略）。 On the car 3, a door operator (car upper station) 14 for controlling the opening and closing of the car doors 13a and 13b 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 switching 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 (wiring is omitted).
　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.
　第１のかごドア１３ａには、第１のかごドア１３ａの開状態を検出する第１のかごゲートスイッチ１７ａが設けられている。第２のかごドア１３ｂには、第２のかごドア１３ｂの開状態を検出する第２のかごゲートスイッチ１７ｂが設けられている。第１及び第２のかごゲートスイッチ１７ａ，１７ｂは、互いに直列に接続されている。なお、かごゲートスイッチ１７ａ，１７ｂは、制御装置４に個別に接続してもよい。 The first car door 13a is provided with a first car gate switch 17a for detecting the open state of the first car door 13a. The second car door 13b is provided with a second car gate switch 17b for detecting the open state of the second car door 13b. The first and second car gate switches 17a and 17b are connected in series with each other. The car gate switches 17a and 17b may be individually connected to the control device 4.
　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（図示せず）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（図示せず）が設けられている。 A maintenance operation lower limit switch (not shown) is provided in the lower part of the hoistway 1 to limit the lowering of the car 3 during the maintenance operation. A maintenance operation upper limit switch (not shown) is provided at the upper part of the hoistway 1 to restrict the ascent of the car 3 during maintenance operation.
　安全制御部２２は、全てのかごゲートスイッチ１７ａ，１７ｂ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。また、安全制御部２２は、いずれかのかごゲートスイッチ１７ａ，１７ｂ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も、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１３ａ，１３ｂ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 all the car gate switches 17a and 17b indicate the door-closed state, the safety control unit 22 indicates that the maintenance person's hoistway 1 is used when the landing door switch 6 of any system indicates the door-open state. Detects movement to, and disables automatic operation. Further, the safety control unit 22 can also be used by maintenance personnel when any of the car gate switches 17a and 17b indicates a door open state, and when two or more landing door switches 6 indicate a door open state. The movement 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 doors 13a and 13b are closed and a case where the car doors 13b are opened, 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１７ａ，１７ｂ、最下階の乗場ドアスイッチ６ａ、及び最下階以外の３系統の乗場ドアスイッチ６ｂ，６ｃ，６ｄの状態を監視し、かごゲートスイッチ１７ａ，１７ｂの両方がオンであるとき、即ち全てのかごドア１３ａ，１３ｂ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，６ｄ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 states of the car gate switches 17a and 17b, the lowermost landing door switch 6a, and the three system landing door switches 6b, 6c, and 6d other than the lowermost floor, and the car gate switches 17a, When both of the door door switches 6a, 6b, 6c, 6d are turned off when both of the doors 17b are on, that is, when all the car doors 13a, 13b are fully closed, When it is detected that the landing door 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１７ａ，１７ｂのいずれかがオフであるとき、即ちかごドア１３ａ，１３ｂのいずれかが開放されているときに、乗場ドアスイッチ６ａ，６ｂ，６ｃ，６ｄ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 one of the car gate switches 17a, 17b is off, that is, when one of the car doors 13a, 13b is opened, the safety control unit 22 is the landing door switch 6a, 6b, 6c, 6d. When two or more systems are turned off, that is, when it is detected that the landing doors 5 of two or more systems are opened, the 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２つ上の階床の（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 floor two floors above the stop floor of the car 3 (or after the car 3 is stopped just below the floor to be boarded). Get on the car 3. 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１３ａ又はかごドア１３ｂと、それに対向する乗場ドア５と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１３ａ又はかごドア１３ｂと、それに対向する乗場ドア５と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 car is stopped on the floor where the car 3 during automatic operation is located, and the maintenance person takes the pit 1a or car with the car door 13a or the car door 13b and the landing door 5 facing the car door 13a open. It is possible to move up the car 3. As a countermeasure to this, the control of the safety control logic 2 leads to the pit 1a even if the car door 13a or the car door 13b and the landing door 5 facing the car door 13a 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 lowest floor or the landing door 5 on the floor 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、さらに乗場ドア５及びかごドア１３ａ，１３ｂの全て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 the landing door 5 and the car doors 13a and 13b 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及び保守運転上部リミットスイッチにより、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 and the maintenance operation upper limit switch.
　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、安全制御の必要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，６ｄ、１１，１２，１７ａ，１７ｂ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，６ｄ及びかごゲートスイッチ１７ａ，１７ｂ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 (here, duplicated) in order to ensure the reliability necessary for 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, 6d, 11, 12, 17a, and 17b 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, 6d and the car gate switches 17a, 17b 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、４系統の乗場ドアスイッチ６ａ，６ｂ，６ｃ，６ｄ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。 In addition, the logical circuits 23a and 23b take the logical product of the inputs from the four systems of the landing door switches 6a, 6b, 6c and 6d (connected in series). An equivalent 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１７ａ，１７ｂの判定を行う（ステップＳ３）。かごドア１３ａ，１３ｂが全閉状態であれば、乗場ドアスイッチ６ａ，６ｂ，６ｃ，６ｄ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 switches 17a and 17b are determined (step S3). If the car doors 13a and 13b are fully closed, the landing door switches 6a, 6b, 6c and 6d 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１３ａ，１３ｂのいずれかが戸開状態の場合、乗場ドアスイッチ６ａ，６ｂ，６ｃ，６ｄ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）。 If any of the car doors 13a, 13b is in the open state, the landing door switches 6a, 6b, 6c, 6d are determined (step S5). If the two or more landing doors 5 are in the open state, automatic operation is performed. Is invalidated (step S2).
　上記以外の場合、即ち、乗場ドア５及びかごドア１３ａ，１３ｂの全てが閉鎖状態である場合、及びかごドア１３ａ，１３ｂのいずれかが開放状態で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 cases other than the above, that is, when all the landing door 5 and the car doors 13a and 13b are closed, and any one of the car doors 13a and 13b is open and only one landing door 5 is open. In that case, the operation results of the redundant 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１３ａ，１３ｂのいずれか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１３ａ，１３ｂが全閉状態であれば、乗場ドアスイッチ６ａ，６ｂ，６ｃ，６ｄ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). If any of the car doors 13a and 13b is in an open state, the automatic operation invalidation is maintained (step S12). If the car doors 13a, 13b are fully closed, the landing door switches 6a, 6b, 6c, 6d 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.
　また、乗場ドアスイッチ６を３系統以上の多系統に分割したので、階床数が多い場合にも、乗場ドアスイッチ６の接触抵抗増加への対応のために印可電圧を増幅する必要がない。このため、印可電圧増幅のためのコスト増を防ぐことができ、階床数の多いビルに対しても、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 addition, since the landing door switch 6 is divided into three or more systems, it is not necessary to amplify the applied voltage in order to cope with the increase in the contact resistance of the landing door switch 6 even when the number of floors is large. For this reason, the cost increase for applied voltage amplification can be prevented, and the movement of the maintenance personnel to the hoistway 1 can be detected at a low cost even for a building having a large number of floors.
　さらに、最下階を除く階床の乗場ドアスイッチ６が３つの系統に分けられており、連続した３つの階床の乗場ドアスイッチ６が互いに異なる系統に分けられているので、短階床の場合にも、保守員のかご３上への移動をより確実に検知することができる。 Further, the floor door switches 6 except for the lowest floor are divided into three systems, and the three consecutive floor door switches 6 are divided into different systems. Even in this case, the movement of the maintenance staff onto the car 3 can be detected more reliably.
　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、各階床は十分距離が離れており、中間階を設けなくともよい場合について説明する。このような場合も、乗場ドアスイッチ６は実施の形態１と同様に系統分けされる。かご３には、かごドア１３及びかごゲートスイッチ１７が各々１つのみ設けられている。他の構成は、実施の形態１と同様である。 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, a case where the floors are sufficiently separated from each other and an intermediate floor need not be provided will be described. Also in such a case, the landing door switch 6 is divided into systems as in the first embodiment. The car 3 is provided with only one car door 13 and one car gate switch 17. Other configurations are the same as those in the first embodiment.
　このような通常の階床間隔のビルにおいても、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。即ち、通常のビルにも短階床のビルにも、同様の構成を適用することができ、保守員の昇降路１への移動をより確実に検知することができる。 Even in a building with such a normal floor space, it is possible to detect the movement of maintenance personnel to the hoistway 1 at low cost by efficiently using the existing equipment in the elevator. That is, the same configuration can be applied to both a normal building and a short-floor building, and the movement of the maintenance staff to the hoistway 1 can be detected more reliably.
　また、乗場ドアスイッチ６を多系統に分割したので、階床数が多い場合にも、乗場ドアスイッチ６の接触抵抗増加への対応のために印可電圧を増幅する必要がない。このため、印可電圧増幅のためのコスト増を防ぐことができ、階床数の多いビルに対しても、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 addition, since the landing door switch 6 is divided into multiple systems, it is not necessary to amplify the applied voltage to cope with the increase in the contact resistance of the landing door switch 6 even when the number of floors is large. For this reason, the cost increase for applied voltage amplification can be prevented, and the movement of the maintenance personnel to the hoistway 1 can be detected at a low cost even for a building having a large number of floors.
　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、乗場ドアスイッチ６の系統が、最下階の系統とそれ以外の階の系統とに分けられている。また、最下階以外の階床の乗場ドアスイッチ６は、連続する２つの階床を異なる系統で検出するように３系統に分けられている。他の構成は、実施の形態２と同様である。 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 system of the landing door switch 6 is divided into a system on the lowest floor and a system on other floors. The landing door switches 6 on floors other than the lowest floor are divided into three systems so that two consecutive floors are detected by different systems. Other configurations are the same as those in the second 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。また、乗場ドアスイッチ６を多系統に分割したことで、階床数が多い場合にも、乗場ドアスイッチ６の接触抵抗増加への対応のために印可電圧を増幅する必要がない。このため、印可電圧増幅のためのコスト増を防ぐことができ、階床数の多いビルに対しても、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. Further, since the landing door switch 6 is divided into multiple systems, it is not necessary to amplify the applied voltage in order to cope with an increase in the contact resistance of the landing door switch 6 even when the number of floors is large. For this reason, the cost increase for applied voltage amplification can be prevented, and the movement of the maintenance personnel to the hoistway 1 can be detected at a low cost even for a building having a large number of floors.
　実施の形態４．
　次に、図７はこの発明の実施の形態４による機械室レスタイプのエレベータを示す構成図、図８は図７のエレベータの安全制御装置を示すブロック図である。この例では、乗場ドアスイッチ６の系統が、最下階の系統（乗場ドアスイッチ６ａ）とそれ以外の階の系統とに分けられている。また、最下階以外の階床の乗場ドアスイッチ６は、連続する３つの階床を異なる系統で検出するように４系統（乗場ドアスイッチ６ｂ～６ｅ）に分けられている。安全制御部２２への乗場ドアスイッチ６の入力は、上記の５系統となる。他の構成は、実施の形態１と同様である。 Embodiment 4 FIG.
Next, FIG. 7 is a block diagram showing a machine room-less type elevator according to Embodiment 4 of the present invention, and FIG. 8 is a block diagram showing the elevator safety control device of FIG. In this example, the system of the landing door switch 6 is divided into the system of the lowest floor (the landing door switch 6a) and the system of other floors. The landing door switches 6 on floors other than the lowest floor are divided into four systems (landing door switches 6b to 6e) so that three consecutive floors can be detected by different systems. The input of the landing door switch 6 to the safety control unit 22 is the above five systems. Other configurations are the same as those in the first embodiment.
　このように、最下階以外の階床の乗場ドアスイッチ６を４系統に分けた場合も、実施の形態１と同様の効果を得ることができる。また、系統数を増やすことで、階床数がより多いビルに対しても、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。 Thus, even when the landing door switches 6 on the floors other than the lowest floor are divided into four systems, the same effect as in the first embodiment can be obtained. Further, by increasing the number of systems, it is possible to detect the movement of maintenance personnel to the hoistway 1 at a low cost even for a building having a larger number of floors.
　実施の形態５．
　次に、図９はこの発明の実施の形態５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、乗場ドアスイッチ６の系統が、最下階の系統とそれ以外の階の系統とに分けられている。最下階以外の階床の乗場ドアスイッチ６は、連続する３つの階床を異なる系統で検出するように４系統に分けられている。安全制御部２２への乗場ドアスイッチ６の入力は、上記の５系統となる。他の構成は、実施の形態２と同様である。 Embodiment 5. FIG.
Next, FIG. 9 is a block diagram showing a machine room-less type elevator according to Embodiment 5 of the present invention. In this example, the system of the landing door switch 6 is divided into a system on the lowest floor and a system on other floors. The landing door switches 6 on floors other than the lowest floor are divided into four systems so that three consecutive floors are detected by different systems. The input of the landing door switch 6 to the safety control unit 22 is the above five systems. Other configurations are the same as those in the second embodiment.
　このように、最下階以外の階床の乗場ドアスイッチ６を４系統に分けた場合も、実施の形態２と同様の効果を得ることができる。また、系統数を増やすことで、階床数がより多いビルに対しても、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。 Thus, even when the landing door switches 6 on the floors other than the lowest floor are divided into four systems, the same effect as in the second embodiment can be obtained. Further, by increasing the number of systems, it is possible to detect the movement of maintenance personnel to the hoistway 1 at a low cost even for a building having a larger number of floors.
　なお、実施の形態１～５では、最下階の乗場ドアスイッチ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。即ち、最下階の乗場ドアスイッチ６を最下階以外の階床の乗場ドアスイッチ６のいずれかの系統に属させてもよい。
　また、実施の形態１～３では、最下階以外の乗場ドアスイッチ６を３系統に、実施の形態４～５では最下階以外の乗場ドアスイッチ６を４系統に分けたが、それ以上の系統に分割してもよい。 In Embodiments 1 to 5, the lowest floor landing door switch 6a is one independent system. However, when a maintenance person opens the lowermost landing door 5 and does not move into the pit 1a, etc. The landing door switch 6 on the lowest floor may not be an independent system. That is, the landing door switch 6 on the lowest floor may belong to any system of the landing door switches 6 on floors other than the lowest floor.
In the first to third embodiments, the landing door switches 6 other than the lowest floor are divided into three systems. In the fourth to fifth embodiments, the landing door switches 6 other than the lowest floor are divided into four systems. You may divide into the following systems.
　さらに、実施の形態１～５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。
　さらにまた、実施の形態１～５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。
　また、実施の形態１～５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、実施の形態１～５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。
　さらにまた、実施の形態１～５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、同一昇降路内を複数のかごが独立して走行する１シャフトマルチカータイプのエレベータ、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。 Further, in the first to fifth 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.
Furthermore, in the first to fifth embodiments, the connection from the various switches to the safety control unit 22 is performed by wire, but may be performed wirelessly.
In the first to fifth 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 fifth embodiments, the hoisting machine 2 and the elevator control device 4 are arranged 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 on the top of the elevator.
Furthermore, although the machine room-less type elevator is shown in the first to fifth embodiments, the present invention can be applied to any type of elevator as long as the elevator performs maintenance work in the hoistway. For example, elevators with machine rooms, double deck type elevators, 1-shaft multi-car type elevators in which multiple cars run independently in the same hoistway, low press type elevators, linear motor elevators, hydraulic elevators, etc. However, the present invention is applicable.

Claims (10)

  1. 　対応するかごドアの開放を検出する少なくとも１つのかごゲートスイッチ、
    　対応する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、
    　最下階を除く階床の前記乗場ドアスイッチが３つ以上の系統に分けられており、
    　少なくとも１つの系統には、２つ以上の前記乗場ドアスイッチが含まれており、
    　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、全ての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に、保守員の昇降路への移動を検知し、また、いずれかの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も、保守員の前記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。     At least one car gate switch to detect opening of the corresponding car door,
    A plurality of landing door switches that detect opening of corresponding 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 switches on the floors other than the lowest floor are divided into three or more systems,
    At least one system includes two or more landing door switches,
    The safety control unit can recognize the opening of the landing door independently for each system of the landing door switch, and when all the car gate switches indicate the door closed state, When the landing door switch indicates a door open state, a movement of a maintenance worker to the hoistway is detected, and when any one of the car gate switches indicates a door open state, two or more systems are detected. An elevator safety control device that detects movement of a maintenance worker to the hoistway even when the landing door switch indicates a door open state.
  2. 　前記乗場ドアスイッチの系統は、連続する３つの階床の前記乗場ドアの開放を各々異なる系統で検出するように構成されている請求項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 system is configured to detect the opening of the landing doors on three consecutive floors using different systems.
  3. 　前記乗場ドアスイッチの系統は、連続する２つの階床の前記乗場ドアの開放を各々異なる系統で検出するように構成されている請求項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 system is configured to detect the opening of the landing doors on two consecutive floors using different systems.
  4. 　最下階の前記乗場ドアスイッチは、最下階を除く階床の前記乗場ドアスイッチの系統とは別の系統に分けられている請求項１から請求項３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 landing door switch of the lowest floor is divided | segmented into the system | strain different from the system | strain of the said landing door switch of the floors except the lowest floor of any one of Claim 1-3. Elevator safety control device.
  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５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 5, wherein the safety control unit invalidates automatic operation of a car when detecting a movement of a maintenance worker to the hoistway.
  7. 　前記安全制御部は、前記かごの自動運転が無効化された場合、リセットスイッチが操作され、かつ前記乗場ドア及び前記かごドアの全ての全閉状態を確認すると、自動運転に復帰する請求項６記載のエレベータの安全制御装置。 The safety control unit returns to automatic operation when a reset switch is operated when automatic operation of the car is invalidated and all the closed states of the landing door and the car door are confirmed. The elevator safety control device described.
  8. 　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７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 7, wherein the safety control unit switches an operation mode of a car to a manual operation mode when a movement of a maintenance worker to the hoistway is detected. .
  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、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７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 7 to 7.
  10. 　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９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 9, wherein the safety control unit includes a plurality of logic circuits that perform the same processing and is made redundant.
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WO2019224938A1 (en) * 2018-05-23 2019-11-28 三菱電機株式会社 Door system for elevator
US20200324999A1 (en) * 2019-04-15 2020-10-15 Otis Elevator Company Elevator systems
US11673767B2 (en) * 2019-04-15 2023-06-13 Otis Elevator Company Elevator systems
JP2022112852A (en) * 2021-01-22 2022-08-03 フジテック株式会社 elevator
JP2022112851A (en) * 2021-01-22 2022-08-03 フジテック株式会社 elevator
JP7173182B2 (en) 2021-01-22 2022-11-16 フジテック株式会社 elevator
JP7449494B2 (en) 2022-07-07 2024-03-14 フジテック株式会社 elevator

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JPWO2013084279A1 (en) 2015-04-27
JP5859023B2 (en) 2016-02-10

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