WO2023228362A1 - Dispositif d'inspection de système régulateur d'ascenseur et procédé d'inspection - Google Patents

Dispositif d'inspection de système régulateur d'ascenseur et procédé d'inspection Download PDF

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Publication number
WO2023228362A1
WO2023228362A1 PCT/JP2022/021582 JP2022021582W WO2023228362A1 WO 2023228362 A1 WO2023228362 A1 WO 2023228362A1 JP 2022021582 W JP2022021582 W JP 2022021582W WO 2023228362 A1 WO2023228362 A1 WO 2023228362A1
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WO
WIPO (PCT)
Prior art keywords
speed
car
governor system
simulated
overspeed
Prior art date
Application number
PCT/JP2022/021582
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English (en)
Japanese (ja)
Inventor
洋輔 久保
勇来 齊藤
康司 伊藤
秀隆 座間
徹也 中山
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株式会社日立製作所
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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Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to PCT/JP2022/021582 priority Critical patent/WO2023228362A1/fr
Publication of WO2023228362A1 publication Critical patent/WO2023228362A1/fr

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    • 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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical

Definitions

  • the present invention relates to an inspection device and an inspection method for inspecting the operation of an elevator governor system that operates an elevator emergency stop device.
  • Elevator equipment is equipped with a governor and an emergency stop device to constantly monitor the elevator car's elevator speed and bring the elevator car to an emergency stop when it reaches a predetermined overspeed condition.
  • a governor rope connected to the cage is wound around the governor pulley.
  • the governor rope moves with the car, causing the pulley to rotate.
  • the pulley rotates, the pendulum attached to the pulley swings due to centrifugal force.
  • the pendulum activates a gripping mechanism for the governor rope, and the movement of the governor rope is restricted. This activates the emergency stop device on the car side, causing the car to come to an emergency stop.
  • Patent Document 1 As a conventional technique that operates an emergency stop device based on the speed of the car detected using a non-contact sensor without using a mechanical governor as described above, there is a technique described in Patent Document 1. It has been known.
  • the monitoring device determines that there is an abnormality in the driving situation based on speed information from the car speed detection section in the detection means that detects the position and speed of the car, it outputs an activation signal to the emergency stop device. do.
  • the position/speed detection device for a moving object described in Patent Document 1 detects the speed of the moving object based on an image taken by a camera included in the moving object. If the moving object is an elevator, the walls and pillars of the hoistway are photographed.
  • the present invention provides an elevator governor system inspection device and inspection method that can easily inspect the operation of a governor system that detects the speed of a car using a non-contact sensor.
  • an inspection device for an elevator governor system detects the speed of the car based on a non-contact sensor provided in the car and a sensor signal of the non-contact sensor. If the overspeed state of the car is determined based on the detected speed, the operation of the governor system, which is equipped with a safety control device that operates an emergency stop device, is tested, and based on the detected speed, a simulated speed larger than the detected speed is
  • the safety control device includes a simulated speed generation unit that generates a simulated speed, and during an inspection, the safety control device determines an overspeed state of the car based on the simulated speed.
  • a method for inspecting an elevator governor system detects the speed of the car based on a non-contact sensor provided in the car and a sensor signal of the non-contact sensor, and A method for inspecting the operation of a governor system comprising a safety control device that operates an emergency stop device when an overspeed condition of a car is determined based on the , a simulated speed larger than the detected speed is generated based on the detected speed, and the safety control device determines an overspeed state of the car based on the simulated speed.
  • the operation of the governor system can be easily inspected without causing the car to become overspeeded.
  • FIG. 1 is a schematic configuration diagram of an elevator system that is an embodiment of the present invention.
  • the elevator system includes a car 1, a non-contact sensor 2, an electric operating device 3, a link mechanism 4, and an emergency stop device 5.
  • the emergency stop device 5 is simply illustrated, and the detailed configuration of the emergency stop device 5 is omitted.
  • the emergency stop device 5 in this embodiment is based on a known technique.
  • the car 1 is suspended by a main rope (not shown) in a hoistway provided in a building, and is slidably engaged with a guide rail 7 via a guide device.
  • a main rope (not shown)
  • a drive device a hoisting machine, not shown
  • the car 1 moves up and down within the hoistway.
  • the non-contact sensor 2 is provided in the car 1. Using the non-contact sensor 2, the position of the car 1 in the hoistway is detected, and the ascending and descending speed of the car 1 is constantly detected from the detected position of the car 1. Therefore, using the non-contact sensor 2, it is possible to detect that the lifting speed of the car exceeds a predetermined overspeed.
  • the non-contact sensor 2 includes an image sensor and detects the position and speed of the car 1 based on image information of the surface state of the guide rail 7 acquired by the image sensor.
  • the electric operating device 3 is an electromagnetic operating device in the first embodiment, and is arranged at the top of the car 1.
  • the electromagnetic operating device includes a movable piece or a movable rod that is driven by, for example, a solenoid or an electromagnet.
  • the electric operating device 3 includes an electromagnet, and is in an inactive state while the electromagnet is energized.
  • the power to the electromagnet is cut off.
  • the electric operating device 3 is actuated to displace the link mechanism 4 and put the emergency stop device 5 into a braking state.
  • the link mechanism 4 includes a link shaft 40 driven by the electric actuator 3, a pull-up link 41 operatively linked to the link shaft 40, and a pull-up rod 42 connected to the pull-up link 41. 3, the pulling rods 42 disposed on the left and right sides of the car 1 are pulled up substantially simultaneously via the pulling links 41. As a result, when the brake 51 of the emergency stop device 5 attached to the pulling rod 42 is pulled up to the braking position, the brake 51 clamps the guide rail 7 .
  • the emergency stop devices 5 are arranged one on each side of the car 1.
  • the brake element 51 included in the emergency stop device 5 is movable between a braking position and a non-braking position, and clamps the guide rail 7 in the braking position.
  • a braking force is generated by the frictional force acting between the brake element 51 and the guide rail 7.
  • the emergency stop device 5 is activated when the car 1 falls into an overspeed state, and brings the car 1 to an emergency stop.
  • the elevator apparatus of this embodiment includes a so-called ropeless governor system that does not use a governor rope.
  • the ropeless governor system when the lifting speed of the car 1 exceeds the rated speed and reaches the first overspeed (for example, a speed not exceeding 1.3 times the rated speed), the traction sheave around which the main rope is wound is activated. Cut off the power to the drive device (hoisting machine) and the control device that controls this drive device.
  • the drive device hovering machine
  • the control device that controls this drive device.
  • the electric operating device 3 provided in the car 1 is activated.
  • the emergency stop device 5 is actuated to bring the car 1 to an emergency stop.
  • the ropeless governor system includes a non-contact sensor 2 and a safety control device 100 (FIG. 1) that determines the overspeed state of the car 1 based on the output signal of the non-contact sensor 2. Ru.
  • a safety control device 100 is provided on a car 1, as shown in FIG.
  • the safety control device 100 measures the speed of the car 1 based on the sensor signal of the non-contact sensor 2, and when it is determined that the measured speed has reached the first overspeed, the safety control device 100 turns on the power source of the drive device (hoisting machine). and outputs a command signal to cut off the power to the control device that controls this drive device. Furthermore, when the safety control device 100 determines that the measured speed has reached the second overspeed, it outputs a command signal for driving the electric operating device 3.
  • the safety control device 100 has a function of inspecting the operation of the ropeless governor system that detects the speed of the car 1 using the non-contact sensor 2.
  • FIG. 2 is a functional block diagram showing the configuration of the ropeless governor system in this embodiment.
  • the safety control device 100 includes a speed detection section 101, a simulated speed generation section 102, an inspection mode detection section 105, an inspection mode switching section 106, an overspeed determination section 107, a drive power cutoff command section 108, and an electromagnet power supply.
  • a cutoff command section 109 is provided.
  • the safety control device 100 includes a computer system such as a microcomputer, and the computer system operates as each part by executing a predetermined program.
  • the speed detection unit 101 acquires a sensor signal from the non-contact sensor 2, and detects the speed of the car 1 by image signal processing based on the acquired sensor signal.
  • the speed detection unit 101 calculates the speed from the moving distance of the image feature amount of the surface state of the guide rail 7 in a predetermined time. Further, for example, the speed detection unit 101 detects the position of the car 1 by comparing image information of the surface state of the guide rail 7 stored in the storage device in advance with image information obtained from the sensor signal, Furthermore, the speed of the car 1 is measured by calculating the temporal change in the detected position.
  • the speed detection unit 101 outputs the detected speed of the car 1 to the overspeed determination unit 107 via the inspection mode detection unit 105.
  • the inspection mode detection unit 105 connects any of the outputs of the speed detection unit 101 and the simulated speed generation unit 102 (described later) to the input of the overspeed determination unit 107.
  • the inspection mode detection section 105 connects the output of the speed detection section 101 to the input of the overspeed determination section 107.
  • the overspeed determining unit 107 determines whether the detected speed input from the speed detecting unit 101 is equal to or higher than the first overspeed. When the overspeed determination section 107 determines that the detected speed is equal to or higher than the first overspeed, the overspeed determination section 107 sends the determination result to the drive power cutoff command section 108 .
  • the drive power cutoff command unit 108 When the drive power cutoff command unit 108 receives the determination result from the overspeed determination unit 107, it outputs a command signal to shut off the power to the hoisting machine and the control device 60.
  • the overspeed determination unit 107 determines whether the detected speed input from the speed detection unit 101 is equal to or higher than the second overspeed. When the overspeed determination section 107 determines that the detected speed is equal to or higher than the second overspeed, the overspeed determination section 107 sends the determination result to the electromagnet power cutoff command section 109 .
  • the electromagnet power cutoff command unit 109 Upon receiving the determination result from the overspeed determination unit 107, the electromagnet power cutoff command unit 109 outputs a command signal to shut off the power to the electromagnet of the electric actuator 3 (FIG. 1) in the electric emergency stop device.
  • a maintenance terminal device 200 is communicably connected to the safety control device 100.
  • the maintenance terminal device 200 is configured by a personal computer or the like.
  • the maintenance terminal device 200 uses the inspection mode command unit 201 to send a command signal to the safety control device 100 to instruct switching from the normal operation mode to the inspection operation mode.
  • the inspection mode switching unit 106 in the safety control device 100 When the inspection mode switching unit 106 in the safety control device 100 receives a command signal from the maintenance terminal device 200, the inspection mode switching unit 106 instructs the inspection mode detection unit 105 to output the output of the simulated speed generation unit 102 and the input of the overspeed determination unit 107. Command the connection.
  • the inspection mode detection section 105 disconnects the output of the speed detection section 101 and the input of the overspeed determination section 107 in response to a command from the inspection mode switching section 106, and connects the output of the simulated speed generation section 102 with the overspeed determination section. It is connected to the input of section 107.
  • the simulated speed generation unit 102 generates a simulated speed for inspection by multiplying the detected speed of the car 1 output by the speed detection unit 101 by a constant using the proportional device 103.
  • the detected speed output by the speed detection unit 101 may include a vibration component due to the vibration of the car 1 due to the elasticity of the main rope.
  • this vibration component is also multiplied by a constant. Therefore, in this embodiment, the vibration component of the simulated speed output by the proportional device 103 is removed by the low-pass filter 104.
  • the simulated speed generation unit 102 outputs a simulated speed from which vibration components have been removed. This improves the reliability of testing the ropeless governor system.
  • the car 1 When testing the operation of the ropeless governor system, the car 1 is operated in a speed range below the rated speed.
  • the cutoff frequency of the low-pass filter 104 is set to the natural frequency of the vibration system consisting of the main rope and the car 1. Since the length of the main rope that constitutes the vibration system differs depending on the position of the car 1, the natural frequency varies. For this reason, the cutoff frequency is preferably set to the minimum natural frequency.
  • the simulated speed generation unit 102 outputs the simulated speed of the car 1 to the overspeed determination unit 107 via the inspection mode detection unit 105.
  • the overspeed determining unit 107 determines whether the simulated speed input from the simulated speed generating unit 102 is greater than or equal to the first overspeed.
  • the overspeed determination unit 107 determines that the simulated speed is equal to or higher than the first overspeed, it sends the determination result and the value of the simulated speed to the maintenance terminal device 200 .
  • the maintenance terminal device 200 detects that the ropeless governor system performs a predetermined operation when the speed of the car 1 reaches the first overspeed, and detects the speed of the car 1 at that time.
  • the maintenance terminal device 200 displays the determination result and the simulated speed value received from the overspeed determination section 107 using a speed display section 202 that includes a display device such as a liquid crystal display.
  • the overspeed determining unit 107 determines whether the simulated speed input from the simulated speed generating unit 102 is equal to or higher than the second overspeed.
  • the overspeed determination unit 107 determines that the simulated speed is equal to or higher than the second overspeed, it sends the determination result and the value of the simulated speed to the maintenance terminal device 200 .
  • the maintenance terminal device 200 detects that the ropeless governor system performs a predetermined operation when the speed of the car 1 reaches the second overspeed, and detects the speed of the car 1 at that time. In this case as well, the maintenance terminal device 200 displays the determination result received from the overspeed determining section 107 and the value of the simulated speed using the speed display section 202.
  • the overspeed determination section 107 does not send the determination result to the drive power cutoff command section 108 and the electromagnet power cutoff command section 109. Therefore, the car 1 will not be brought to an emergency stop. Note that the determination result may be invalidated in the drive power cutoff command section 108 and the electromagnet power cutoff command section 109.
  • FIG. 3 is a flowchart showing processing operations in the inspection operation mode of the safety control device 100 of this embodiment.
  • a maintenance engineer inspects the operation of the ropeless governor system using the maintenance terminal device 200 on the car 1 in which the safety control device 100 is installed. At this time, the operation mode of the elevator system is set to maintenance operation mode. In the maintenance operation mode, a maintenance engineer manually operates a maintenance operation panel provided on the car 1 to cause the car 1 to travel at a speed lower than the rated speed.
  • a maintenance engineer communicably connects the maintenance terminal device 200 to the safety control device 100 via a communication line. Next, the maintenance engineer operates the maintenance terminal device 200 to switch the operation mode of the safety control device 100 from the normal operation mode to the inspection operation mode.
  • step S1 the maintenance engineer operates the maintenance operation panel, and the car 1 starts traveling.
  • the car 1 starts traveling, it accelerates in a speed range lower than the rated speed.
  • step S2 the safety control device 100 acquires a sensor signal from the non-contact sensor 2.
  • step S3 the safety control device 100 uses the speed detection unit 101 to detect the speed of the car 1 based on the sensor signal acquired in step S1.
  • step S4 the safety control device 100 uses the proportional device 103 in the simulated speed generation unit 102 to multiply the detected speed of the car 1 obtained in step S3 by a constant, thereby creating a simulated speed for inspection. Calculate.
  • step S5 the safety control device 100 filters the simulated speed calculated in step S4 using the low-pass filter 104 in the simulated speed generating section 102.
  • step S6 the safety control device 100 uses the overspeed determination unit 107 to determine whether the simulated speed filtered in step S5 is equal to or higher than the first overspeed. If the safety control device 100 determines that the simulated speed is not equal to or higher than the first overspeed (NO in step S6), it re-executes the processes from step S2 onwards. Further, if the safety control device 100 determines that the simulated speed is equal to or higher than the first overspeed (YES in step S6), then it executes step S7.
  • step S7 the safety control device 100 uses the overspeed determining unit 107 to send the first overspeed data including the value of the simulated speed determined to be equal to or higher than the first overspeed to the maintenance terminal device 200. Output to.
  • the maintenance terminal device 200 uses the speed display unit 202 to display the first overspeed data on a display device included in the maintenance terminal device 200. Thereby, the maintenance engineer confirms that the ropeless governor system performs a predetermined operation when the speed of the car 1 reaches the first overspeed.
  • step S8 the safety control device 100 then executes step S8.
  • step S8 the safety control device 100 acquires the sensor signal from the non-contact sensor 2.
  • step S9 the safety control device 100 uses the speed detection unit 101 to detect the speed of the car 1 based on the sensor signal acquired in step S8.
  • step S10 the safety control device 100 uses the proportional device 103 in the simulated speed generation unit 102 to multiply the detected speed of the car 1 obtained in step S9 by a constant, thereby creating a simulated speed for inspection. Calculate.
  • step S11 the safety control device 100 filters the simulated speed calculated in step S10 using the low-pass filter 104 in the simulated speed generating section 102.
  • step S12 the safety control device 100 uses the overspeed determining unit 107 to determine whether the simulated speed filtered in step S11 is equal to or higher than the second overspeed. If the safety control device 100 determines that the simulated speed is not equal to or higher than the second overspeed (NO in step S12), it re-executes the processes from step S8 onwards. Further, if the safety control device 100 determines that the simulated speed is equal to or higher than the second overspeed (YES in step S12), then it executes step S13.
  • step S13 the safety control device 100 uses the overspeed determining unit 107 to send second overspeed data including the value of the simulated speed determined to be equal to or higher than the second overspeed in step S12 to the maintenance terminal device 200.
  • the maintenance terminal device 200 uses the speed display section 202 to display the second overspeed data on a display device included in the maintenance terminal device 200.
  • the maintenance engineer confirms that the ropeless governor system performs a predetermined operation when the speed of the car 1 reaches the second overspeed.
  • step S14 the safety control device 100 then executes step S14.
  • step S14 the maintenance engineer operates the maintenance operation panel to stop the car 1 from running.
  • the safety control device 100 ends the series of processes.
  • the operation of the ropeless governor system can be inspected by running the car 1 at a low speed below the rated speed without overspeeding the car 1. Therefore, the operation of a ropeless governor system that detects the speed of a car using a non-contact sensor can be easily inspected.
  • the non-contact sensor 2 may detect a barcode or a predetermined pattern that includes positional information in the height direction within the hoistway.
  • the barcode or predetermined pattern is set on the surface of a long object to be detected, such as a tape.
  • a magnetic sensor may be used as the non-contact sensor.
  • a tape-like elongated member magnetized with a pattern including positional information is used as the object to be detected.
  • the present invention is not limited to the embodiments described above, and includes various modifications.
  • the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to having all the configurations described.
  • the electric operating device 3 may be provided not only in the upper part of the car 1 but also in the lower part or the side part.
  • the elevator device may have a machine room or may be a so-called machine room-less elevator.

Abstract

Est divulgué un dispositif d'inspection de système régulateur d'ascenseur qui permet d'inspecter facilement le fonctionnement d'un système régulateur pour détecter la vitesse d'une cabine d'ascenseur pour passagers en utilisant un capteur sans contact. Un dispositif d'inspection de système régulateur d'ascenseur équipé d'un capteur sans contact (2) disposé sur la cabine de passagers et d'un dispositif de contrôle de sécurité (100) destiné à détecter la vitesse de cabine de passagers sur la base d'un signal de capteur provenant du capteur sans contact, et actionnant un dispositif d'arrêt d'urgence lorsqu'il est déterminé sur la base de la vitesse détectée que la vitesse de cabine de passagers est trop rapide, ledit dispositif d'inspection étant : en outre équipé d'une unité de génération de vitesse simulée (102) qui génère une vitesse simulée qui est supérieure à la vitesse détectée sur la base de la vitesse détectée ; et configuré en outre d'une manière telle que pendant l'inspection, le dispositif de contrôle de sécurité détermine que la vitesse de cabine de passagers est trop rapide sur la base de la vitesse simulée.
PCT/JP2022/021582 2022-05-26 2022-05-26 Dispositif d'inspection de système régulateur d'ascenseur et procédé d'inspection WO2023228362A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006073015A1 (fr) * 2005-01-04 2006-07-13 Mitsubishi Denki Kabushiki Kaisha Dispositif de detection de boulons d'ascenseur, systeme d'ascenseur et dispositif de detection de position/vitesse d'element mobile
CN202229909U (zh) * 2011-08-21 2012-05-23 上海龙钰电梯配件有限公司 一种限速器的调试装置
JP2013159479A (ja) * 2012-02-08 2013-08-19 Hitachi Ltd 速度検出装置及びこの速度検出装置を備えたエレベータ装置及びエレベータ装置の検査方法
JP2016069093A (ja) * 2014-09-26 2016-05-09 株式会社日立製作所 エレベータ装置およびエレベータ装置の電子安全システムの点検方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006073015A1 (fr) * 2005-01-04 2006-07-13 Mitsubishi Denki Kabushiki Kaisha Dispositif de detection de boulons d'ascenseur, systeme d'ascenseur et dispositif de detection de position/vitesse d'element mobile
CN202229909U (zh) * 2011-08-21 2012-05-23 上海龙钰电梯配件有限公司 一种限速器的调试装置
JP2013159479A (ja) * 2012-02-08 2013-08-19 Hitachi Ltd 速度検出装置及びこの速度検出装置を備えたエレベータ装置及びエレベータ装置の検査方法
JP2016069093A (ja) * 2014-09-26 2016-05-09 株式会社日立製作所 エレベータ装置およびエレベータ装置の電子安全システムの点検方法

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