JP5168831B2 - Elevator seismic control device - Google Patents

Elevator seismic control device Download PDF

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JP5168831B2
JP5168831B2 JP2006183631A JP2006183631A JP5168831B2 JP 5168831 B2 JP5168831 B2 JP 5168831B2 JP 2006183631 A JP2006183631 A JP 2006183631A JP 2006183631 A JP2006183631 A JP 2006183631A JP 5168831 B2 JP5168831 B2 JP 5168831B2
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JP2008013279A (en
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謙一 青木
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Fujitec Co Ltd
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Description

本発明は、エレベータの地震管制装置に関し、特に地震発生後にエレベータを最寄階等に停止させて一旦運転休止とし、その後の自動点検運転により安全を確認した後に平常運転に自動復旧させる(運転速度を下げるなど機能を通常より制限した仮復旧運転を含む。以下同様。)エレベータの地震管制装置に関する。   The present invention relates to a seismic control device for an elevator, and in particular, after an earthquake occurs, the elevator is stopped at the nearest floor, etc. to temporarily stop the operation, and after the safety is confirmed by the subsequent automatic inspection operation, the normal operation is automatically restored (operation speed). Including temporary restoration operation with limited functions such as lowering, etc. The same shall apply hereinafter.) This relates to an elevator earthquake control system.

従来から、エレベータには地震時における安全対策として地震管制装置が設けられている。この地震管制装置は、一般に地震感知器を備えており、一定レベル以上の揺れを感知するとエレベータを最寄階等に停止させ、或いは一旦停止の後、最寄階へ低速運転で移動させた後運転を休止する。その後、保守員等により復旧のための点検作業が行なわれ、安全が確認されると平常運転に復旧させ運転が再開される。   Conventionally, an elevator has been provided with an earthquake control device as a safety measure in the event of an earthquake. This seismic control device is generally equipped with a seismic detector, and after detecting a certain level of vibration, the elevator stops at the nearest floor, etc., or after being stopped, it is moved to the nearest floor at low speed. Stop driving. After that, maintenance work is performed by a maintenance worker or the like, and when safety is confirmed, normal operation is restored and operation is resumed.

しかしながら、都市部やその近くで大きな地震が発生すると膨大な数のエレベータが運転休止に至るため、上記のように保守員による点検の後に復旧させる方法では非常に多くの保守員と作業時間とを要し、保守員の手の回らない現場では長時間に亘ってエレベータが停止したままとなる。このため、地震後の復旧運転をより早く行うため、保守員による点検ではなく、点検から復旧までを自動的に行うことが提案されている。例えば、エレベータを最寄階に停止させた後、揺れが収まったか或いは一定時間経過後に、エレベータを最上階から最下階まで通常の速度よりも低速で往復走行させるなどの自動点検運転を行い、その間に各種の異常検出器により異常が検出されなければ安全と判断し、自動的に平常運転を再開させるというものである(特許文献1参照)。
特開昭59−39674号公報
However, if a large earthquake occurs in or near an urban area, a huge number of elevators will be shut down, so the method of restoring after inspection by maintenance personnel as described above requires a great deal of maintenance personnel and work time. In other words, the elevator remains stopped for a long time at a site where the maintenance staff does not turn. For this reason, in order to perform recovery operation after an earthquake more quickly, it is proposed to automatically perform from inspection to recovery, not inspection by maintenance personnel. For example, after stopping the elevator at the nearest floor, after the shaking has stopped or after a certain period of time, perform an automatic check operation such as reciprocating the elevator from the top floor to the bottom floor at a lower speed than the normal speed, In the meantime, if no abnormality is detected by various abnormality detectors, it is judged safe and the normal operation is automatically restarted (see Patent Document 1).
JP 59-39674 A

上記特許文献1のように、地震後に自動点検でエレベータ装置の安全を確認し、異常が検出されなければ平常運転に復旧させる場合、異常検出としては、例えば、走行時の異常音や異常振動を検出するもの、巻上機に異常なトルクが加わることにより生じる異常電流を検出するもの、かごの移動速度の変動を検出するもの、ケーブルの一端に重量センサを取付けてケーブルの引っ掛かりを検出するもの、或いは昇降路内の地震前後の画像分析により昇降路内の変化を検出するようにしたものなど、種々のものが考えられている。 When the safety of the elevator apparatus is confirmed by an automatic inspection after an earthquake as described in Patent Document 1 and normal operation is restored if no abnormality is detected, the abnormality detector may be, for example, an abnormal sound or abnormal vibration during traveling. , Detecting abnormal current caused by abnormal torque applied to the hoist, detecting fluctuations in the moving speed of the car, and attaching a weight sensor to one end of the cable to detect cable catching Various things, such as what detected the change in a hoistway by the image analysis before and behind the earthquake in a hoistway, are considered.

このような異常検出器は、多数備えることで異常の有無をより正確に検出することが期待される反面、検出の対象によっては新たに種々のセンサーやカメラなど平常時には使用されない機器を追加する必要があり、コストアップにつながるという問題がある。   Although it is expected that the presence or absence of such anomaly detectors will more accurately detect the presence or absence of anomalies, it is necessary to add devices that are not normally used, such as various sensors and cameras, depending on the detection target. There is a problem that leads to cost increase.

本発明は、上記の点に鑑みなされたもので、新たなセンサーや機器を追加することなく地震発生後の安全確認を確実に行うことができ、安価な構成で平常運転に自動復旧させることを可能としたものである。   The present invention has been made in view of the above points, and it is possible to surely perform safety confirmation after an earthquake without adding new sensors and devices, and to automatically restore normal operation with an inexpensive configuration. It is possible.

本発明は、地震発生時に、その地震の震度や揺れの状態に応じてかごを最寄階等に停止させて運転休止とし、その後の自動点検運転により異常が検出されない場合は平常運転に復帰させるようにしたエレベータの地震管制装置において、平常時の判断基準により平常運転時に異常を検出する異常検出装置に、平常運転時における異常検出と同一の対象に対して、平常時の判断基準とは異なる第2の判断基準を設け、第2の判断基準により前記自動点検運転時に異常を検出させるようにしたものである。 This onset Ming, at the time of the earthquake, the car is stopped at the nearest floor, such as a shutdown in accordance with the state of the seismic intensity and the shaking of the earthquake, the return to normal operation when the abnormality is not detected by the subsequent automatic inspection operation In an elevator seismic control device, the abnormality detection device that detects abnormalities during normal operation based on the normal judgment criteria, the normal judgment criteria for the same object as the abnormality detection during normal operation A different second determination criterion is provided, and an abnormality is detected during the automatic inspection operation based on the second determination criterion .

前記第2の判断基準は平常時の判断基準よりも厳しい判断基準とするのが望ましいが、そうするのは次のような理由による。一般に平常時における異常検出の判断基準は、あらゆる運転パターンや運転条件(速度,負荷,走行距離等)に対応させたものであり、ある程度判断基準の幅を広くせざるを得ないが、地震後の復旧のための自動点検運転は特定の運転パターン・運転条件に限定されることになるため、必然的に正常な場合の数値のバラツキは小さくなり、其の分だけ異常検出の判断基準の幅を狭くすることができる。 It is desirable that the second determination criterion is a stricter determination criterion than the normal determination criterion . The reason is as follows. In general, the criteria for detecting anomalies during normal times correspond to all driving patterns and operating conditions (speed, load, mileage, etc.), and the range of criteria must be broadened to some extent. Since automatic inspection operation for restoration of the product is limited to specific operation patterns and operating conditions, the variability of the numerical value in the normal case is inevitably reduced, and the range of the criterion for detecting abnormality is correspondingly reduced. Can be narrowed.

例えば、平常時の運転時には、かご内の乗客の動きによってかごに揺れが生じるため、速度偏差やトルク指令値、或いはかごの検出位置ずれ等を異常検出対象としている場合には、その許容値を前記かごの揺れを考慮してある程度大きくせざるを得ないが、点検運転時には乗客によるかごの揺れを考慮する必要はなく、その分だけ判断基準となる許容値を小さくすることができる。また、平常運転時には、かご内の乗客数と運転方向との関係によって負荷が変動することになるが、点検運転時は無人であり、運転方向が決まれば負荷は一定となるため、その分判断基準となる許容値を小さくすることができる。   For example, during normal operation, the car shakes due to the movement of passengers in the car, so if the speed deviation, torque command value, or car detection position deviation, etc. are subject to abnormality detection, set the allowable value. Although it must be increased to some extent in consideration of the car sway, it is not necessary to consider the sway of the car by the passenger during the inspection operation, and the permissible value serving as a judgment criterion can be reduced accordingly. Also, during normal operation, the load varies depending on the relationship between the number of passengers in the car and the driving direction, but it is unattended during inspection operation, and the load is constant once the driving direction is determined. The reference allowable value can be reduced.

また、地震が発生すると建物やエレベータ装置は、外観上何ら変化がなくても多少の損害を受けていることが十分考えられる。従って、同一の判断基準で表面上は異常が検出されなかったとしても、実際には異常が潜在している可能性もあり、最終的に保守員による安全確認を行うまでは、平常運転への自動復旧の判断基準として通常より厳しくしておく必要があり。こうした観点からも異常検出の判断基準を平常運転時よりも厳しい値に設定することが望ましい。   In addition, when an earthquake occurs, it is considered that the building and the elevator apparatus are slightly damaged even if there is no change in appearance. Therefore, even if no abnormality is detected on the surface with the same criteria, there is a possibility that an abnormality may actually exist. It should be stricter than usual as a criterion for automatic recovery. From this point of view, it is desirable to set the criterion for abnormality detection to a stricter value than during normal operation.

本発明によれば、新たにセンサーや高度な異常診断機能を追加することなく、安価な構成で地震後のエレベータ装置の安全を確認し、平常運転へ自動復旧させることが可能である。また平常運転時の異常検出と同一の検出対象を用いて安全確認を行うことができるので、既設のエレベータにも容易に適用することが可能である。 According to the present invention, without adding new sensors and advanced diagnosis function, the safety of the elevator apparatus after the earthquake confirmed by an inexpensive configuration, Ru der can be automatically restored normal to operation. Moreover , since safety confirmation can be performed using the same detection target as abnormality detection during normal operation , it can be easily applied to existing elevators.

以下、本発明の一実施形態を図面に基づいて説明する。図1は本発明の一実施形態であるエレベータの地震管制装置の全体構成図、図2は本発明に係るエレベータの地震管制の運転手順を示すフローチャート、図3は図2における異常検出の手順を示すフローチャートである。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an elevator earthquake control apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing an operation procedure of the elevator earthquake control according to the present invention, and FIG. 3 is an abnormality detection procedure in FIG. It is a flowchart to show.

図1において、1はエレベータの乗りかご、2はカウンターウェイト、3はエレベータ駆動用の電動機,4はトラクションシーブ、5は乗りかご1とロープで結合され、乗りかごの移動に応じて回転駆動される調速器プーリ、6は調速器プーリ5に直結され、乗りかご1の移動速度や移動距離に応じたパルスを発生するロータリーエンコーダである。   In FIG. 1, 1 is an elevator car, 2 is a counterweight, 3 is an electric motor for driving the elevator, 4 is a traction sheave, 5 is connected to the car 1 by a rope, and is driven to rotate according to the movement of the car. The speed governor pulley 6 is a rotary encoder that is directly connected to the speed governor pulley 5 and generates pulses corresponding to the moving speed and moving distance of the car 1.

10は電動機3及びエレベータ全般の動作を制御する制御盤、11は所定レベル以上の揺れを検出する地震感知器、12は地震感知器11が作動するとエレベータを最寄階に停止させるなどの地震管制運転指令を発生する地震管制運転指令装置、13は地震発生後、所定時間が経過するなど所定の条件が整った段階で、特定の運転パターンによる自動点検運転指令を出力する自動点検運転指令装置である。   10 is a control panel for controlling the operation of the electric motor 3 and the elevator as a whole, 11 is a seismic detector for detecting a vibration of a predetermined level or more, and 12 is a seismic control for stopping the elevator at the nearest floor when the seismic sensor 11 is operated. A seismic control operation command device 13 that generates an operation command is an automatic inspection operation command device that outputs an automatic inspection operation command according to a specific operation pattern when a predetermined condition has been established such as a predetermined time has elapsed after the occurrence of an earthquake. is there.

14は地震管制運転指令や自動運転点検指令等に応じてエレベータの運転を制御する運転制御装置、15は運転制御装置14からの指令やかご位置信号(図示省略)等に基づいて電動機3の速度制御を行う速度制御装置、16は電動機への速度指令と実際のかご速度との差を比較して異常を検出する異常検出装置である。   14 is an operation control device that controls the operation of the elevator in accordance with an earthquake control operation command, an automatic operation inspection command, and the like. 15 is a speed of the motor 3 based on a command from the operation control device 14, a car position signal (not shown), or the like. A speed control device 16 that performs control is an abnormality detection device that detects an abnormality by comparing a difference between a speed command to the motor and an actual car speed.

以下、上記図1の構成と図2のフローチャートに基づいて、本発明に係る地震管制運転の手順を説明する。   Hereinafter, the procedure of the seismic control operation according to the present invention will be described based on the configuration of FIG. 1 and the flowchart of FIG.

地震感知器で所定のレベル以上の揺れを検出すると地震感知器11が作動し、地震管制運転指令装置12から運転制御装置14へ地震管制運転指令が発せられる(ステップS1)。このときエレベータが走行中であれば、かごは最寄階へ停止し、ドアを開いて乗客を降ろした後にドアを閉じ運転を休止する(ステップS2、ステップS3)。もしもかごが停止中であった場合には、上記と同様にドアを開いて乗客をかごから脱出させた後、ドアを閉じ運転を休止する(ステップS2、ステップS4)。   When the seismic sensor detects a shake of a predetermined level or higher, the seismic sensor 11 is activated, and a seismic control operation command is issued from the seismic control operation command device 12 to the operation control device 14 (step S1). At this time, if the elevator is running, the car stops to the nearest floor, opens the door and lowers the passenger, then closes the door and pauses the operation (steps S2 and S3). If the car is stopped, the door is opened in the same manner as described above to allow passengers to escape from the car, and then the door is closed to stop the operation (steps S2 and S4).

その後、一定時間経過するなど所定条件が整うと、自動点検運転指令装置13から運転制御装置14へ自動点検運転指令が発せられ、特定の運転パターンによる点検運転が行われる(ステップS5、ステップS6)。この自動点検運転は例えば低速で最上階から最下階まで一往復運転を行い、異常が検出されなければ、次に高速運転で同様に一往復運転を行うなど種々の実施例が考えられる。そして自動点検運転中に何らかの異常が検出されるとその時点でその後の運転を休止する(ステップS7、ステップS9)。   Thereafter, when a predetermined condition is satisfied, for example, a certain time elapses, an automatic inspection operation command is issued from the automatic inspection operation command device 13 to the operation control device 14, and an inspection operation based on a specific operation pattern is performed (steps S5 and S6). . For example, the automatic check operation may be performed in one reciprocating operation from the top floor to the bottom floor at a low speed, and if no abnormality is detected, a single reciprocating operation is similarly performed in a high speed operation. If any abnormality is detected during the automatic inspection operation, the subsequent operation is stopped at that time (steps S7 and S9).

もしも自動点検運転中に異常が検出されず、所定の点検運転を終了した場合には平常運転に復帰し、地震管制運転は終了となる(ステップS8、ステップS10)。   If no abnormality is detected during the automatic inspection operation and the predetermined inspection operation is completed, the normal operation is restored, and the seismic control operation is completed (steps S8 and S10).

図3は、図2のステップS7における異常検出の判断の手順を示すフローチャートである。ここでは異常検出の例として、一般的に行われている速度偏差を判断基準の対象とした例について示している。   FIG. 3 is a flowchart showing a procedure of abnormality detection determination in step S7 of FIG. Here, as an example of abnormality detection, an example in which a speed deviation that is generally performed is used as an object of a determination criterion is shown.

まず、速度制御装置15から発せられる速度指令とロータリーエンコーダ6から帰還されるかごの実速度とを比較する(ステップS71)。次に自動点検運転中であるか否かを判断し(ステップS72)、自動点検運転時でなければすなわち平常運転時であれば、その差が平常時の判断基準である所定値L1以下であるか否かを判断する(ステップS73)。   First, the speed command issued from the speed control device 15 is compared with the actual speed of the car returned from the rotary encoder 6 (step S71). Next, it is determined whether or not the automatic check operation is being performed (step S72). If the automatic check operation is not being performed, that is, if the normal operation is being performed, the difference is equal to or less than a predetermined value L1 that is a normal determination criterion. Whether or not (step S73).

平常運転時においては、その差が所定値L1以下であれば正常であると判断して運転が継続され(ステップS75)、所定値L1を超えると異常とみなして異常検出信号が出力されるが(ステップS76)、地震後の自動点検運転時である場合は、平常時とは異なる第2の判断基準、すなわち所定値L1よりも小さい所定値L2を判断基準とする。   During normal operation, if the difference is less than or equal to the predetermined value L1, it is determined that the operation is normal (step S75), and if it exceeds the predetermined value L1, it is considered abnormal and an abnormality detection signal is output. (Step S76) In the case of automatic check operation after an earthquake, a second determination criterion different from normal, that is, a predetermined value L2 smaller than the predetermined value L1 is used as a determination criterion.

この結果、自動点検運転時には、その差がより安全な所定値L2以下であれば正常であると判断して運転が継続され(ステップS75)、点検運転終了までその状態が継続すると点検運転終了後に平常運転に復帰するが(図2のステップS8,S10)、点検運転中に所定値L2を超えると異常とみなして異常検出信号が出力され(ステップS76)、以後の運転を休止することになる(図2のステップS9)。   As a result, at the time of automatic inspection operation, if the difference is less than the safer predetermined value L2, it is determined to be normal and the operation is continued (step S75). Although the normal operation is resumed (steps S8 and S10 in FIG. 2), if the predetermined value L2 is exceeded during the inspection operation, an abnormality detection signal is output (step S76), and the subsequent operation is suspended. (Step S9 in FIG. 2).

このように、上記の実施形態では、地震発生後の自動点検運転において、異常検出の判断基準を平常時の判断基準よりも厳しい、すなわちより限定した範囲を正常とみなすようにその値を設定したので、保守員によらない自動点検運転であっても安全を確実に確認した上で平常運転に復旧させることができる。   Thus, in the above embodiment, in the automatic inspection operation after the occurrence of an earthquake, the value is set so that the abnormality detection criterion is stricter than the normal criterion, that is, a more limited range is regarded as normal. Therefore, even in an automatic inspection operation not performed by maintenance personnel, it is possible to restore normal operation after confirming safety.

なお上記の実施形態において、異常検出の判断基準となる所定値L1は、エレベータの起動から停止に至るまで必ずしも一定の固定値でなくともよく、エレベータの加減速時と等速時、或いは運転方向によって異なる値とするようにしてもよいし、所定値L2についても同様である。   In the above-described embodiment, the predetermined value L1 that is a criterion for detecting abnormality is not necessarily a fixed value from the start to the stop of the elevator. Different values may be used depending on the case, and the same applies to the predetermined value L2.

また、上記の実施形態において、地震後の異常検出の判断基準となる所定値L2については、理論上から適宜決定することも可能であるが、地震時以外の通常の点検運転時において、速度偏差やトルク指令など、正常運転時の種々のデータを測定しておき、その値に基づいて設定するようにしてもよい。   In the above embodiment, the predetermined value L2, which is a criterion for detecting an abnormality after an earthquake, can be appropriately determined theoretically. However, during normal inspection operations other than during an earthquake, a speed deviation can be obtained. Various data during normal operation such as torque command and torque command may be measured and set based on the values.

また、上記の実施形態では、異常検出の対象として指令速度と帰還速度との差について説明したが、駆動トルク指令の異常(電動機電流の異常)や、昇降路内のかご位置検出器の動作位置ずれなどの異常検出、その他平常運転時における異常検出の対象としているものであれば何でもよく、それらの組合せで平常運転への復旧の可否を判断するようにしてもよい。   In the above embodiment, the difference between the command speed and the feedback speed has been described as an abnormality detection target. However, an abnormality in the drive torque command (an abnormality in the motor current) or an operating position of the car position detector in the hoistway Anything may be used as long as it is a target of abnormality detection such as deviation and other abnormality detection during normal operation, and the combination of these may be used to determine whether or not recovery to normal operation is possible.

その他、本発明は上記の実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で、種々の改変を施すことができる。   In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

本発明の一実施形態であるエレベータの地震管制装置の全体構成を示すブロック図である。1 is a block diagram showing an overall configuration of an elevator earthquake control apparatus according to an embodiment of the present invention. 本発明に係る地震管制運転の手順を説明するフローチャートである。It is a flowchart explaining the procedure of the earthquake control operation which concerns on this invention. 本発明に係る異常検出の判断手順を説明するフローチャートである。It is a flowchart explaining the determination procedure of the abnormality detection which concerns on this invention.

符号の説明Explanation of symbols

1 かご
3 駆動電動機
5 調速器プーリ
6 ロータリーエンコーダ
10 制御盤
11 地震感知器
12 地震管制運転指令装置
13 自動点検運転指令装置
14 運転制御装置
15 速度制御装置
16 異常検出装置
DESCRIPTION OF SYMBOLS 1 Car 3 Drive motor 5 Speed governor pulley 6 Rotary encoder 10 Control panel 11 Earthquake detector 12 Seismic control operation command device 13 Automatic check operation command device 14 Operation control device 15 Speed control device 16 Abnormality detection device

Claims (4)

地震発生時に、その地震の震度や揺れの状態に応じてかごを最寄階等に停止させて運転休止とし、その後の自動点検運転により異常が検出されない場合は平常運転に復帰させるようにしたエレベータの地震管制装置において、
平常時の判断基準により平常運転時に異常を検出する異常検出装置に、平常運転時における異常検出と同一の対象に対して、前記平常時の判断基準より限定した範囲を正常とみなすように設定された第2の判断基準を設け、前記第2の判断基準により前記自動点検運転時に異常を検出させるようにしたことを特徴とするエレベータの地震管制装置。
When an earthquake occurs, the elevator stops the car on the nearest floor according to the seismic intensity and shaking condition of the earthquake, stops the operation, and returns to normal operation if no abnormality is detected by the subsequent automatic inspection operation In the earthquake control equipment of
The abnormality detection device that detects an abnormality during normal operation based on the normal judgment criteria is set so that the range limited by the normal judgment criteria is regarded as normal for the same target as the abnormality detection during normal operation. and the second criterion is provided, seismic control device for an elevator, characterized in by the second criterion that so as to detect the abnormality when the automatic inspection operation.
前記異常検出装置は、エレベータの速度指令と帰還速度との差を判断基準の対象とするものであることを特徴とする請求項1に記載のエレベータの地震管制装置。   2. The elevator earthquake control device according to claim 1, wherein the abnormality detection device uses a difference between an elevator speed command and a feedback speed as a criterion for determination. 前記異常検出装置は、エレベータのトルク指令値(電動機電流)を判断基準の対象とするものであることを特徴とする請求項1に記載のエレベータの地震管制装置。 The abnormality detecting device, an earthquake control device for an elevator according to claim 1, characterized in that it also to you torque command value of the elevator (the motor current) targeted criteria. 前記異常検出装置は、昇降路に設置されたエレベータのかご位置検出器の動作位置のずれを判断基準の対象とするものであることを特徴とする請求項1に記載のエレベータの地震管制装置。   2. The elevator earthquake control device according to claim 1, wherein the abnormality detection device is a target of determination based on a shift in an operation position of an elevator car position detector installed in a hoistway. 3.
JP2006183631A 2006-07-03 2006-07-03 Elevator seismic control device Active JP5168831B2 (en)

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