WO2015125264A1 - Dispositif de détection de déraillement pour ascenseur - Google Patents

Dispositif de détection de déraillement pour ascenseur Download PDF

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Publication number
WO2015125264A1
WO2015125264A1 PCT/JP2014/054110 JP2014054110W WO2015125264A1 WO 2015125264 A1 WO2015125264 A1 WO 2015125264A1 JP 2014054110 W JP2014054110 W JP 2014054110W WO 2015125264 A1 WO2015125264 A1 WO 2015125264A1
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WO
WIPO (PCT)
Prior art keywords
hoistway
counterweight
detector
hoistway wall
elevator
Prior art date
Application number
PCT/JP2014/054110
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English (en)
Japanese (ja)
Inventor
貴士 徳野
Original Assignee
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.)
Filing date
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/JP2014/054110 priority Critical patent/WO2015125264A1/fr
Publication of WO2015125264A1 publication Critical patent/WO2015125264A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B66B7/028—Guideways; Guides with earthquake protection devices
    • 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
    • B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
    • B66B5/022—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system where the abnormal operating condition is caused by a natural event, e.g. earthquake

Definitions

  • the present invention relates to a derailing detection device that detects an unrailing of an elevator that may occur when an earthquake occurs.
  • the elevator car In a general elevator, the elevator car is lifted and lowered in a hoistway of a building by driving a car and a counterweight with a hoisting machine. At this time, a pair of guide rails for guiding the carriage and the counterweight along the vertical direction are provided on the hoistway wall in the hoistway so that the elevator and the counterweight can be smoothly moved up and down. is set up.
  • the counterweight is guided along each guide rail by the guide portions installed at the upper and lower ends of the counterweight fitting with each guide rail.
  • the guide rail may bend, and the counterweight and the guide part of the car may come off the guide rail. If the elevator car and the counterweight are moved up and down as usual in the state of the rail release, the elevator car and the counterweight will shake greatly, and the elevator car and the counterweight will collide with each other, or the counterweight will collide with the equipment in the hoistway. May cause further secondary damage.
  • Patent Document 1 discloses a derailing detection device that detects an unrailing of an elevator using a detection line.
  • the detection lines arranged in parallel with the guide rails for guiding the lifting object are arranged from the lower end to the upper end of the hoistway, and the contactors are separated from the detection lines. Is installed on the lifting object, and when the lifting object is removed from the rail, the contact and the detection line are in contact with each other to detect the removal of the rail.
  • Patent Document 2 the guide rail and the guide part of the lifting object, a bracket installed so as to cover a part of the lifting object when the lifting object derails in at least a partial region of the entire length of the hoistway;
  • a derailing detection device having a detecting unit for detecting the derailing state of an elevator.
  • the derailing detection bracket installed on the bracket of the guide rail and the detecting unit installed on the counterweight come into contact with each other at the time of derailing, and torque acting on the hoisting machine Detecting the fluctuation of the light with a hoisting machine, a detection unit provided with a light emitting unit and a light receiving unit installed on a counterweight, and a bracket installed on a guide rail bracket to block an optical signal from the detection unit Proposes a method of detecting the derailment. Further, in the present rail removal detection device, it is not necessary to install a rail removal detection bracket over the entire length of the hoistway, and the detection can be performed with a minimum device.
  • the method of detecting the contact between the derailing detection bracket and the detection unit by the torque fluctuation of the hoisting machine assumes that the derailing detection bracket and the detection unit are in contact with each other. It is expected that a very large load will be applied.
  • the method of detecting the derailment by blocking the light signal from the detection unit having the light emitting unit and the light receiving unit by the light shielding bracket from the detection unit arranged on the counterweight that moves up and down to the control panel Since it is necessary to wire the signal line, it is difficult to install the signal line to the counterweight that moves up and down in terms of the layout design of the entire elevator.
  • An object of the present invention is to provide an elevator derailment detection device capable of detecting derailment using a detector installed on a hoistway wall and a light-shielding bracket installed on a counterweight that moves up and down. It is in.
  • the present invention provides a pair of guide rails arranged along a vertical direction on a hoistway wall in a hoistway of a building, and a pair of guide rails guided by the pair of guide rails.
  • An elevator derailment detecting device having a hoisting machine that is driven to move up and down in opposite directions, on a hoistway wall at a specific position facing a moving area of the counterweight among hoistway walls in the hoistway
  • a detector comprising: a light emitting unit that is arranged to emit an optical signal in a direction intersecting with the lifting and lowering direction of the counterweight; and a light receiving unit that receives the optical signal from the light emitting unit through a space portion; A space between the light emitting unit and the light receiving unit, which is disposed on the opposite surface side of the weight facing the detector and when the counterweight is opposed to the detector in the normal state in the hoistway.
  • a light-shielding bracket that is positioned within the unit, and a determination unit that determines whether or not a rail is removed based on the detection output of the detector, wherein the determination unit is configured to identify the counterweight in the hoistway. If the light signal from the light-emitting unit is not blocked by the light-shielding bracket and the light-receiving unit receives the light signal on the condition that it exists in the moving region corresponding to the hoistway wall of the position, It is characterized by determining that the occurrence has occurred.
  • the rail removal can be detected by using the detector installed on the hoistway wall and the light-shielding bracket installed on the counterweight that moves up and down.
  • FIG. 1 is a configuration diagram of a rail removal detection device illustrating a first embodiment of the present invention.
  • FIG. It is a block diagram which shows the derailing detection apparatus at the time of derailing in Example 1 of this invention.
  • FIG. 1 is a perspective view of an elevator according to Embodiment 1 of the present invention.
  • a pair of guide rails 5 are arranged along a vertical direction as guide rails for a car, and a pair of guide rails for a counterweight are used as a pair of guide rails.
  • the guide rails 5 are arranged along the vertical direction.
  • the car 2 is guided by a pair of guide rails 5 and moved up and down in the hoistway 1, and the car 2 and the main rope 4 are connected to each other.
  • a counterweight 3 for moving up and down the moving area is arranged.
  • a detector 8 is disposed in the hoistway 1 in the middle of the moving area of the counterweight 3.
  • a machine room 20 is installed above the hoistway 1, and a hoisting machine 21, a main sheave 22, and a control panel 23 are arranged in the machine room 20.
  • the main rope 4 is wound around the main sheave 22.
  • the hoisting machine 21 lifts and lowers the counterweight 2 and the counterweight 3 through the main rope 4 in the opposite directions based on a control signal from the control panel 23.
  • the control panel 23 transmits a control signal to the hoisting machine 21 to control the driving of the hoisting machine 21 and to control the start / stop of operation of the elevator, and further lift and lower the weight 3 against the car 2. Control movement.
  • FIG. 2 is a configuration diagram of the derailing detection device showing the first embodiment of the present invention.
  • the detector 8 is arranged on the hoistway wall 6 at a specific position facing the moving area of the counterweight 3 among the hoistway walls 6 of the hoistway 1.
  • the detector 8 includes a light emitting unit 8a that emits an optical signal in a direction (horizontal direction) intersecting with the lifting / lowering direction of the counterweight 3, and a light receiving unit 8b that receives the optical signal from the light emitting unit 8a through the space. It is prepared for.
  • guide portions 9 that are formed in a substantially U shape and are movably coupled to the respective guide rails 5 are fixed to both ends of the counterweights that are opposed to the respective guide rails 5.
  • a light shielding bracket 7 is disposed opposite to the hoistway wall 6 at a central portion between the guide rails 5 and on the side facing the detector 8. .
  • the light shielding bracket 7 is provided between the light emitting unit 8a and the light receiving unit 8b when the counterweight 3 of the counterweight 3 is present in a moving region corresponding to the hoistway wall 6 at a specific position in the hoistway 1.
  • the space part is arranged in a part existing as a part of the moving region.
  • the shading bracket 7 is configured such that each guide portion 9 is movably coupled to each guide rail 5 and no lifting rail is generated in the elevator, the counterweight 3 is a hoistway wall at a specific position in the hoistway 1.
  • the positioning is performed so as to pass through the space between the light emitting unit 8a and the light receiving unit 8b. That is, the light-shielding bracket 7 is disposed on the counter surface side of the counterweight 3 that faces the detector 8, and when the counterweight 3 faces the detector 8 in the normal state in the hoistway 1, the light emitting unit. It is positioned in the space between 8a and the light receiving part 8b.
  • the detection output of the detector 8 is sent to the control panel 23 via a signal line (not shown) wired to the hoistway wall 6. At this time, by fixing the signal line to the hoistway wall 6 or the like, it is not necessary to install the signal line on the counterweight 3 that moves up and down, and it is possible to easily send a signal to the control panel.
  • the control panel 23 is provided with a determiner (not shown) that determines whether or not there is a rail release based on the detection output of the detector 8.
  • the determination device is configured such that the light signal from the light emitting unit 8a is shielded by the light shielding bracket 7 on the condition that the counterweight 3 exists in a moving region corresponding to the hoistway wall 6 at a specific position in the hoistway 1.
  • the light receiving unit 8b does not receive the optical signal, it is determined that there is no rail removal (normal).
  • the optical signal from the light emitting unit 8a is not blocked by the light blocking bracket 7, and the light receiving unit 8b receives the optical signal. In such a case, it is determined that there is a rail release (abnormal).
  • FIG. 3 is a configuration diagram showing a derailing detection device at the time of derailing in the first embodiment of the present invention.
  • the coupling between each guide portion 9 and each guide rail 5 is released, and each guide portion 9 is detached from each guide rail 5.
  • the blocking bracket 7 remains in the space between the light emitting part 8a and the light receiving part 8b.
  • the light receiving unit 8b always receives the optical signal from the light emitting unit 8a without passing through.
  • the control panel stops the operation of the elevator by stopping the driving of the hoisting machine 21 when the determiner determines that the occurrence of the rail release has occurred.
  • the counterweight 3 when the derailment occurs, the counterweight 3 is installed on the hoistway wall 6 when it exists in the moving region corresponding to the hoistway wall 6 at a specific position in the hoistway 1.
  • the rail removal can be detected by using the detector 8 and the light-shielding bracket 7 installed on the counterweight 3 that moves up and down.
  • the detector 8 can be easily installed on the hoistway wall 6, and the signal line from the detector 8 can be easily arranged in the hoistway 1. It is possible to provide a feasible derailing detection device that does not affect the elevator arrangement plan. Furthermore, even if the number of detectors 8 and the light-shielding brackets 7 is minimized, when a rail release occurs, the rail release can be detected at a specific position where the detector 8 is installed.
  • Example 2 has two installation positions of the detector 8, and the other configuration is the same as that of Example 1.
  • FIG. 4 is a perspective view of the elevator according to the second embodiment of the present invention.
  • the two detectors 8 are arranged separately on the hoistway wall 6 in the hoistway 1.
  • the counterweight 3 corresponds to the uppermost hoistway wall corresponding to the moving region located at the uppermost part in the hoistway 1
  • the counterweight 3 is the hoistway 1.
  • the lowermost hoistway wall corresponding to the moving region located in the lowermost part is set, and the detectors 8 are arranged on the uppermost hoistway wall and the lowermost hoistway wall, respectively.
  • one of the detectors 8 is opposed to the light-shielding bracket 7 when the counterweight 3 of the hoistway wall 6 in the hoistway 1 is positioned at the uppermost part of the hoistway 1 in a normal state.
  • the light shielding bracket 7 is inserted into the space between the light emitting part 8a and the light receiving part 8b, and is arranged at a position (top hoistway wall) that blocks the optical signal from the light emitting part 8a. Yes.
  • the other detector 8 is a position opposite to the light-shielding bracket 7 when the counterweight 3 of the hoistway wall 6 in the hoistway 1 is positioned in the lowermost part of the hoistway 1 in a normal state.
  • the light shielding bracket 7 is inserted into the space between the light emitting part 8a and the light receiving part 8b, and is disposed at a position (lower hoistway wall) that blocks the optical signal from the light emitting part 8a. For this reason, when the counterweight 3 is located at the uppermost part or the lowermost part of the hoistway 1, the determiner can determine the presence or absence of the occurrence of rail removal based on the detection output of each detector 8. .
  • the car 2 and the counterweight 3 may be moved up and down at low speeds in directions that do not pass each other.
  • the counterweight 3 is arranged on the uppermost side of the hoistway 1 with respect to the car 2 before the test operation, the counterweight 3 is moved to the uppermost portion of the hoistway 1 during the test operation.
  • the presence or absence of rail removal is determined by the determiner.
  • the counterweight 3 when the counterweight 3 is arranged on the lowermost side of the hoistway 1 with respect to the car 2 before the test operation, the counterweight 3 is moved to the lowermost portion of the hoistway 1 during the test operation.
  • the presence or absence of the occurrence of rail removal is determined by the determiner.
  • the counterweight 3 when the counterweight 3 is positioned at the uppermost or lowermost part of the hoistway 1, it is possible to detect the occurrence of rail release even if the number of detectors 8 and light-shielding brackets 7 is minimal. Can do. For this reason, during the test operation, when the counterweight 3 is detected when the counterweight 3 is located at the uppermost part or the lowermost part of the hoistway 1, the elevator is stopped to stop Passing between the car 2 and the counterweight 3 can be avoided.
  • two detectors 8 are arranged at positions different from those in the second embodiment, and other configurations are the same as those in the second embodiment.
  • FIG. 5 is a perspective view of an elevator according to Embodiment 3 of the present invention.
  • the two detectors 8 are arranged separately on the hoistway wall 6 in the hoistway 1.
  • a first hoistway wall corresponding to the moving area immediately before the counterweight 3 passes when the counterweight 3 descends in the moving area;
  • the second hoistway wall corresponding to the moving area immediately before the passing car 2 passes is set and detected on the first hoistway wall and the second hoistway wall, respectively.
  • a vessel 8 is arranged.
  • one of the detectors 8 includes a counterweight 3 of the hoistway wall 6 in the hoistway 1 that descends from the uppermost side of the hoistway 1, and a car 2 that is the uppermost side of the hoistway 1.
  • the light shielding bracket 7 is inserted into the space between the light emitting portion 8a and the light receiving portion 8b at a position opposite to the light shielding bracket 7 just before they rise from the lower side and pass each other. Is arranged at a position (first hoistway wall) where the optical signal is blocked (shielded).
  • the counterweight 3 of the hoistway wall 6 in the hoistway 1 is raised from the lowermost side of the hoistway 1, and the car 2 is lowered from the uppermost side of the hoistway 1.
  • the light-shielding bracket 7 is inserted into the space between the light-emitting unit 8a and the light-receiving unit 8b at a position opposite to the light-shielding bracket 7 and blocks the optical signal from the light-emitting unit 8a. It arrange
  • the determination device detects each detector 8. Based on the output, it is possible to determine whether or not a rail release has occurred. Further, just before the counterweight 3 is lifted from the lowermost side of the hoistway 1 and the car 2 is lowered from the uppermost side of the hoistway 1 and the two pass each other, the judging device detects each detector 8. Based on the output, it is possible to determine whether or not a rail release has occurred. At this time, when the occurrence of the rail release is detected, the operation of the elevator is stopped. For this reason, it is possible to avoid passing between the car 2 and the counterweight 3 in a state where the rail is removed. In addition, after the occurrence of the earthquake, the test operation can be performed in the same manner as in the second embodiment.
  • the counterweight 3 is lowered to the car 2 side, or the counterweight 3 is raised to the car 2 side, and the two pass each other. Immediately before, it is possible to detect the presence or absence of a rail release. If the occurrence of derailing is detected immediately before the counterweight 3 and the car 2 pass each other, the operation of the elevator is stopped so that the difference between the car 2 and the counterweight 3 in the derailed state can be obtained. Can be avoided.
  • Example 4 is one in which the number of light-shielding brackets 7 and detectors 8 is increased, and the other configurations are the same as those in Example 2 or Example 3.
  • FIG. 6 is a configuration diagram of the derailing detection device showing the fourth embodiment of the present invention.
  • two light shielding brackets 7 are arranged opposite to the hoistway wall 6 at both ends in the axial direction of the counterweight 3.
  • Two detectors 8 are arranged on the uppermost part of the hoistway wall 6 so as to face each light shielding bracket 7.
  • Two detectors 8 are arranged at the lowermost part of the hoistway wall 6 so as to face each light shielding bracket 7.
  • the counterweight 3 is lifted and lowered by a plurality of upper hoistway walls corresponding to the moving region where the counterweight 3 is located at the uppermost part in the hoistway 1.
  • a plurality of lowermost hoistway walls corresponding to a moving region located at the lowermost part in the road 1 are set apart from each other along a direction (horizontal direction) intersecting with the lifting / lowering direction of the counterweight 3.
  • Detectors 8 are arranged on the road walls and the lowermost hoistway walls.
  • each of the light shielding brackets 7 disposed on the opposite surface side of the counterweight 3 that faces each detector 8, when the counterweight 3 faces each detector 8 in the normal state in the hoistway 1, The space between the light emitting part 8a and the light receiving part 8b of each detector 8 arranged on each uppermost hoistway wall, or the light emitting part 8a and the light receiving part of each detector 8 arranged on each lowermost hoistway wall. It is positioned in the space part between the part 8b.
  • Each detector 8 located at the top of the hoistway wall 6 is connected to each light-shielding bracket 7 when the counterweight 3 is located at the top of the hoistway 1 among the hoistway walls 6 in the hoistway 1.
  • each light-shielding bracket 7 is inserted into a space between each light-emitting portion 8a and each light-receiving portion 8b, and is a position where the light signal from each light-emitting portion 8a is blocked (top hoistway) Wall).
  • the detector 8 located at the lowermost part of the hoistway wall 6 is relative to the light shielding bracket 7 when the counterweight 3 is located at the lowermost part of the hoistway 1 in the hoistway wall 6 in the hoistway 1.
  • Each light shielding bracket 7 is inserted into a space between each light emitting portion 8a and each light receiving portion 8b, and is a position where the light signal from each light emitting portion 8a is blocked (lowermost hoistway wall) ). For this reason, when the counterweight 3 is located at the uppermost or lowermost part of the hoistway 1, the determiner demounts based on the detection output of each detector 8 located at the uppermost or lowermost part of the hoistway 1. Whether or not rails are generated can be determined.
  • two detectors are located at the position immediately before the two pass each other, and the position immediately before the counterweight 3 is raised to the car 2 side and the two pass each other. 8 can also be arranged.
  • the hoistway wall 6 at a specific position in the hoistway 1 a plurality of first hoistways corresponding to the moving area just before passing the rising car 2 when the counterweight 3 descends in the moving area.
  • a plurality of second hoistway walls corresponding to the movement area just before passing the car 2 that descends intersects the lifting direction of the counterweight 3 (
  • the detectors 8 are arranged on the first hoistway walls and the second hoistway walls, respectively.
  • each of the light shielding brackets 7 disposed on the opposite surface side of the counterweight 3 that faces the detector 8 is connected to the counterweight 3 when the counterweight 3 is opposed to each detector 8 in the normal state in the hoistway 1.
  • a test operation can be performed after an earthquake occurs.
  • the same effects as those of the second and third embodiments can be obtained, and the presence / absence of derailing can be detected using the two detectors 8 and the two light shielding brackets. Therefore, it is possible to detect the occurrence of derailment with higher accuracy than in the second and third embodiments.
  • each hoistway wall can be set as hoistway walls at specific positions in the hoistway, and a detector can be arranged on each hoistway wall.
  • the balance weight 3 corresponds to the uppermost hoistway wall corresponding to the moving region located at the uppermost part in the hoistway 1 and the lowermost hoistway wall corresponding to the moving region located corresponding to the lowermost part in the hoistway 1.
  • the first hoistway wall corresponding to the moving area just before the rising car 2 and the counterweight 3 moves down in the moving area.
  • a second hoistway wall corresponding to the moving area immediately before passing the car 2 is set, and a detector 8 is arranged on each hoistway wall.
  • each embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un dispositif de détection de déraillement pour un ascenseur comprenant un contrepoids (3) et une machine de levage (22) permettant de lever et d'abaisser une cabine (2), ledit dispositif de détection de déraillement comprenant: un détecteur (8) qui est disposé sur une paroi de cage d'ascenseur (6) au niveau d'une position spécifique dans une cage d'ascenseur (1) et qui est doté d'une partie d'émission de lumière (8a) et d'une partie de réception de lumière (8b); un support de blocage de lumière (7) qui est disposé au niveau de la partie du contrepoids (3) qui fait face au détecteur (8) lorsque le contrepoids (3) est dans une position correspondant à la paroi de cage d'ascenseur (6) au niveau de la position spécifique dans la cage d'ascenseur (1); et un dispositif de détermination (23) qui détermine la présence ou l'absence de déraillement sur la base d'une sortie de détection du détecteur (8). Le dispositif de détermination (23) est conçu pour déterminer qu'un déraillement se produit si un signal optique provenant de la partie d'émission de lumière (8a) est reçu par la partie de réception de lumière (8b) sans être bloqué par le support de blocage de lumière (7) à condition que le contrepoids (3) soit dans une région de déplacement correspondant à la paroi de cage d'ascenseur (6) au niveau de la position spécifique dans la cage d'ascenseur (1).
PCT/JP2014/054110 2014-02-21 2014-02-21 Dispositif de détection de déraillement pour ascenseur WO2015125264A1 (fr)

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PCT/JP2014/054110 WO2015125264A1 (fr) 2014-02-21 2014-02-21 Dispositif de détection de déraillement pour ascenseur

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PCT/JP2014/054110 WO2015125264A1 (fr) 2014-02-21 2014-02-21 Dispositif de détection de déraillement pour ascenseur

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547504U (fr) * 1977-06-20 1979-01-18
JPS5467941A (en) * 1977-11-08 1979-05-31 Mitsubishi Electric Corp Counterweight for elevator
JP2001247270A (ja) * 2000-03-08 2001-09-11 Toshiba Corp エレベータの着床検出装置
JP2003238038A (ja) * 2002-02-12 2003-08-27 Toshiba Elevator Co Ltd エレベータのかご位置検出装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547504U (fr) * 1977-06-20 1979-01-18
JPS5467941A (en) * 1977-11-08 1979-05-31 Mitsubishi Electric Corp Counterweight for elevator
JP2001247270A (ja) * 2000-03-08 2001-09-11 Toshiba Corp エレベータの着床検出装置
JP2003238038A (ja) * 2002-02-12 2003-08-27 Toshiba Elevator Co Ltd エレベータのかご位置検出装置

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