JPS6239017Y2 - - Google Patents
Info
- Publication number
- JPS6239017Y2 JPS6239017Y2 JP3454079U JP3454079U JPS6239017Y2 JP S6239017 Y2 JPS6239017 Y2 JP S6239017Y2 JP 3454079 U JP3454079 U JP 3454079U JP 3454079 U JP3454079 U JP 3454079U JP S6239017 Y2 JPS6239017 Y2 JP S6239017Y2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- signal
- speed signal
- abnormality
- reference speed
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000005856 abnormality Effects 0.000 claims description 23
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004913 activation Effects 0.000 description 1
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Description
【考案の詳細な説明】
本考案はエレベータの速度の異常を検出する装
置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for detecting an abnormality in the speed of an elevator.
第２図は速度異常検出装置を含むエレベータの
速度制御装置の一例を示すもので、図中１はエレ
ベータのかご、２はつり合いおもり、３は巻上ロ
ープ、４は巻上ロープ３を巻き掛ける綱車、５は
綱車４を駆動する電動機の電機子、６はこの電動
機の他励界磁、７は電機子５に直結され実際のか
ごの速度に対応する速度信号V2を発する速度検
出器、８は電機子５に電力を供給する発電機の電
機子、９はこの発電機の界磁、１０は界磁９を制
御する界磁制御回路、１１はかご１の速度指令信
号１１ａを発生する速度指令装置、AVRは定電
圧電源、Ya〜Ydはそれぞれかご１が終端階付近
の安全スイツチ作動地点Ａ〜Ｄに到達すると順次
開路する安全スイツチの接点、１３はエレベータ
かご１が地点Ａ〜Ｄを通過することによつて第３
図に示すのように階段状に低下する基準
速度信号V1を出力する基準パターン発生器、１
４は前記基準速度信号V1と前記速度信号V2とを
比較してV2≧V1になつたとき異常信号V3をたと
えば前記速度指令装置１１に入力する異常検出器
で、異常信号V3が入力されると前記速度指令装
置１１は即時減速信号を発し周知の速度帰還制御
が行なわれる。ここで、前記基準速度信号V1は
前記速度信号V2よりも通常時は常に大きな値に
なるように設定されている。 Figure 2 shows an example of an elevator speed control device including a speed abnormality detection device, in which 1 is an elevator car, 2 is a counterweight, 3 is a hoisting rope, and 4 is a hoisting rope around which the 3 is wound. 5 is the armature of the electric motor that drives the sheave 4; 6 is the externally excited field of this electric motor; 7 is a speed detector that is directly connected to the armature 5 and generates a speed signal V 2 corresponding to the actual car speed. 8 is the armature of a generator that supplies power to the armature 5; 9 is the field of this generator; 10 is a field control circuit that controls the field 9; 11 is a generator that generates a speed command signal 11a for the car 1; A speed command device, AVR is a constant voltage power supply, Ya to Yd are safety switch contacts that open sequentially when car 1 reaches safety switch activation points A to D near the terminal floor, and 13 is a contact point for elevator car 1 to points A to D. 3rd by passing
A reference pattern generator 1 that outputs a reference speed signal V 1 that decreases stepwise as shown in the figure.
Reference numeral 4 denotes an abnormality detector which compares the reference speed signal V 1 and the speed signal V 2 and inputs an abnormal signal V 3 to the speed command device 11 when V 2 ≧V 1 . 3 is input, the speed command device 11 immediately issues a deceleration signal and a well-known speed feedback control is performed. Here, the reference speed signal V 1 is set to always have a larger value than the speed signal V 2 under normal conditions.
次にこの従来装置の動作について説明する。
今、かご１が速度V2で走行中にシーケンス制御
装置（図示しない）の故障により減速指令１５ａ
が速度指令装置１１に入力されず、かご１が減速
点に達しても減速しないような場合、即ち第３図
の1のような場合には、速度信号V2が基準速
度信号V1に等しくなつた点A1で異常検出器１４
が働き、異常信号V3が減速指令として速度指令
装置１１に入力される。これにより速度指令装置
１１は即時減速信号を発して速度信号V2とのつ
き合わせによる周知の速度帰還制御よりかご１は
第３図の1のように即時減速制御され最寄
階に着床する。 Next, the operation of this conventional device will be explained.
Now, while car 1 is running at speed V 2 , a deceleration command 15a is issued due to a failure in the sequence control device (not shown).
is not input to the speed command device 11 and the car 1 does not decelerate even when it reaches the deceleration point, that is, in the case shown in 1 in Fig. 3, the speed signal V 2 is equal to the reference speed signal V 1 . Abnormality detector 14 at hot point A1
is activated, and the abnormal signal V3 is inputted to the speed command device 11 as a deceleration command. As a result, the speed command device 11 issues an immediate deceleration signal, and through the well-known speed feedback control based on the speed signal V2 , the car 1 is immediately decelerated as shown in 1 in Fig. 3 and lands on the nearest floor. .
これはあくまでも速度帰還制御装置が正常に動
作する場合であつて、万一この速度帰還制御装置
等の故障によりかご１が異常速度に達した場合に
は何ら安全対策にはなりえない。 This is only a case where the speed feedback control device operates normally, and if the car 1 reaches an abnormal speed due to a failure of the speed feedback control device or the like, it cannot be used as a safety measure at all.
例えば、速度指令装置１１あるいは界磁制御回
路１０を構成する演算増幅器等の故障によりかご
１が定速走行中に増速した場合、即ち第３図の
のような場合にも、速度信号V2が基準速度
信号V1に等しくなつた点Ｑで異常検出器１４が
働き、異常信号V3が速度指令装置１１に入力さ
れるが、帰還制御が正常に行なわれないため、か
ご１は依然増速をつづけ、最終的に定格速度をオ
ーバーしたところで調速機（図示しない）が働き
エレベータの電源がカツトされるとともに電磁ブ
レーキが作動することによりかご１は停止する。
したがつて調速機が動作するまでかご１は当然走
行を続けるため、定格速度が大きければ大きいほ
ど危険性が増すことになる。 For example, even if car 1 increases speed while running at a constant speed due to a failure in the speed command device 11 or the operational amplifier constituting the field control circuit 10, that is, in the case shown in FIG. The abnormality detector 14 operates at the point Q when the speed signal V 1 becomes equal to the speed signal V 1 , and the abnormal signal V 3 is input to the speed command device 11 . However, since the feedback control is not performed normally, the car 1 is still unable to increase its speed. Continuing, when the car 1 finally exceeds the rated speed, a speed governor (not shown) is activated to cut off the power to the elevator, and the electromagnetic brake is activated to stop the car 1.
Therefore, the car 1 naturally continues to run until the speed governor operates, so the greater the rated speed, the greater the danger.
本考案は上記の点に鑑みなされたもので、重大
な箇所での故障であるか否かを迅速に判別すると
ともに、そのときの故障に見合つた適確な安全対
策により定格速度がたとえ大きくてもより安全な
速度異常検出装置を提供することを目的とする。 The present invention was developed in consideration of the above points, and it is possible to quickly determine whether or not a failure occurs at a critical location, and to take appropriate safety measures commensurate with the failure at that time, even if the rated speed is high. The present invention also aims to provide a safer speed abnormality detection device.
第１図は本考案による速度異常検出装置の一実
施例を示す構成図である。図中第２図と同一符号
のものは同一のものを示すが、１５は本考案によ
る第二の基準パターン発生器で、前述の基準パタ
ーン発生器１３の基準速度信号V1をベースに例
えば基準速度信号V1に所定値αを加算してこれ
以上の値となる基準速度信号V5を出力する。１
６は前記基準速度信号V5と速度信号V2とを比較
しV2≧V5になつたとき異常信号V6を出力する本
考案による異常判別検出器で、異常信号V6が出
力されれば調速機が働いたときと同様、エレベー
タの電源がカツトされ電磁ブレーキが作動してか
ご１を機械的に停止させる。 FIG. 1 is a block diagram showing an embodiment of a speed abnormality detection device according to the present invention. In the figure, the same reference numerals as those in FIG. A predetermined value α is added to the speed signal V 1 to output a reference speed signal V 5 having a value greater than the predetermined value α. 1
Reference numeral 6 denotes an abnormality discrimination detector according to the present invention which compares the reference speed signal V5 and the speed signal V2 and outputs an abnormal signal V6 when V2 ≧ V5 . For example, in the same way as when the speed governor is activated, the elevator power is cut off and the electromagnetic brake is activated to mechanically stop the car 1.
つまり、本考案によれば、第４図においてかご
１が速度V2で走行中に点Ｐで何らかの故障によ
りかごがのように走行して速度信号V2が基
準速度信号V1に等しくなつた点Ｑで異常検出器
１４が働き即減速制御に切換えても、速度帰還制
御装置における故障のためさらにかご１が増速し
てかごがのように速度信号V2が基準速度信
号V5に等しくなつた点Ｔで今度は異常判別検出
器１６が働き、異常信号V6を出力してかご１を
確実に停止させることができる。 In other words, according to the present invention, in Fig. 4, while car 1 is running at speed V 2 , due to some kind of failure at point P, the car runs as shown in Figure 4, and the speed signal V 2 becomes equal to the reference speed signal V 1 . Even if the abnormality detector 14 operates at point Q and switches to immediate deceleration control, due to a failure in the speed feedback control device, car 1 speeds up further and the speed signal V 2 becomes equal to the reference speed signal V 5 as in the case of the car. At the point T, the abnormality detection detector 16 operates, outputting an abnormality signal V6 , and making it possible to reliably stop the car 1.
以上述べたように、本考案装置は万一エレベー
タ速度帰還制御装置に故障が起こつても早期に異
常を検出して確実にかごを停止させるため、より
一層の安全確保が可能となる。 As described above, even if a failure occurs in the elevator speed feedback control device, the device of the present invention detects the abnormality early and reliably stops the car, thereby making it possible to further ensure safety.
エレベータにはかごの速度が定格速度の130％
程度に達すれば調速機によりかごを停止させるよ
うにはなつているが、高速エレベータの場合には
短階床運転と長階床運転とでは定常走行が著しく
異なり、万一短階床運転時に速度帰還制御装置の
故障によつてかごが異常速度になつても調速機が
動作する速度に達するまで停止しないという事態
が起こりうる。しかし、例えば実願昭53−179098
号のように基準速度信号V1の値をかごの定常走
行速度、即ち運転指令信号に対応して変化させる
ようにすれば、基準速度信号V5も同時に変化す
ることになり、より早期にかごの速度異常を検出
することができる。 For elevators, the car speed is 130% of the rated speed.
However, in the case of high-speed elevators, the steady running is markedly different between short-floor operation and long-floor operation, and in the unlikely event that short-floor operation Even if the car reaches an abnormal speed due to a failure of the speed feedback control device, a situation may occur in which the car does not stop until it reaches a speed at which the speed governor operates. However, for example, Jitsugan 53-179098
If the value of the reference speed signal V 1 is changed in accordance with the steady running speed of the car, that is, in response to the operation command signal, as shown in the figure, the reference speed signal V 5 will also change at the same time, and the car speed abnormalities can be detected.
第１図は本考案によるエレベータ速度異常検出
装置の一実施例を示す構成図、第２図は従来のエ
レベータ速度異常検出装置の一例を示す構成図、
第３図は従来装置の動作を示す図、第４図は本考
案における装置の動作を示す説明図である。
１……かご、７……速度検出器、１１……速度
指令装置、１３……第一の基準パターン発生器、
１５……第二の基準パターン発生器、１４……異
常検出器、１６……異常判別検出器、V1……第
一の基準速度信号、V2……速度信号、V3，V6…
…異常信号、V5……第二の基準速度信号。
FIG. 1 is a configuration diagram showing an embodiment of an elevator speed abnormality detection device according to the present invention, FIG. 2 is a configuration diagram showing an example of a conventional elevator speed abnormality detection device,
FIG. 3 is a diagram showing the operation of the conventional device, and FIG. 4 is an explanatory diagram showing the operation of the device according to the present invention. 1... Car, 7... Speed detector, 11... Speed command device, 13... First reference pattern generator,
15...Second reference pattern generator, 14...Abnormality detector, 16 ... Abnormality discrimination detector, V1...First reference speed signal, V2 ...Speed signal, V3 , V6 ...
...Abnormal signal, V 5 ...Second reference speed signal.
Claims (1)
到達するにつれ階段状に低下してゆく第一の基
準速度信号を発生する第一の基準パターン発生
器と、エレベータかごの実際速度を検出する速
度検出器を設け、前記第一の基準速度信号と前
記速度検出器出力とを比較し、前記速度検出器
出力が前記第一の基準速度信号以上となつたと
き異常信号を出力する異常検出器を備え、該異
常検出装置が異常信号を出力すれば速度帰還制
御により即時減速制御されるものにおいて、 前記第一の基準速度信号に基づき常時前記第
一の基準速度信号以上の第二の基準速度信号を
発生する第二の基準パターン発生器を設け、前
記第二の基準速度信号と前記速度検出器出力と
を比較し、前記速度検出器出力が前記第二の基
準速度信号以上となつたときエレベータかごを
即時停止させるための異常信号を発生する異常
判別検出器を設けたことを特徴とするエレベー
タの速度異常検出装置。 (2) 前記第一の基準パターン発生器は運転指令信
号に応じてレベルの異なる第一の基準速度信号
を出力することを特徴とする実用新案登録請求
の範囲第一項記載のエレベータの速度異常検出
装置。[Claims for Utility Model Registration] (1) A first reference pattern generator that generates a first reference speed signal that decreases in a stepwise manner as the elevator car reaches a plurality of points near the terminal floor; A speed detector is provided to detect the actual speed of the elevator car, the first reference speed signal is compared with the speed detector output, and when the speed detector output is equal to or higher than the first reference speed signal. The device is equipped with an abnormality detector that outputs an abnormal signal, and when the abnormality detection device outputs the abnormal signal, immediate deceleration control is performed by speed feedback control, wherein the first reference speed is always maintained based on the first reference speed signal. a second reference pattern generator for generating a second reference speed signal greater than or equal to the second reference speed signal; 1. A speed abnormality detection device for an elevator, comprising an abnormality determination detector that generates an abnormality signal for immediately stopping an elevator car when the speed signal exceeds a reference speed signal. (2) The elevator speed abnormality as set forth in claim 1 of the utility model registration claim, wherein the first reference pattern generator outputs a first reference speed signal with different levels depending on the operation command signal. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3454079U JPS6239017Y2 (en) | 1979-03-17 | 1979-03-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3454079U JPS6239017Y2 (en) | 1979-03-17 | 1979-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55136755U JPS55136755U (en) | 1980-09-29 |
| JPS6239017Y2 true JPS6239017Y2 (en) | 1987-10-05 |
Family
ID=28892104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3454079U Expired JPS6239017Y2 (en) | 1979-03-17 | 1979-03-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239017Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003104648A (en) * | 2001-09-28 | 2003-04-09 | Mitsubishi Electric Corp | Elevator device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005515134A (en) * | 2001-07-04 | 2005-05-26 | インベンテイオ・アクテイエンゲゼルシヤフト | How to prevent unacceptably high speeds in elevator load-carrying means |
| JP5064454B2 (en) * | 2009-08-12 | 2012-10-31 | 三菱電機株式会社 | Elevator equipment |
-
1979
- 1979-03-17 JP JP3454079U patent/JPS6239017Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003104648A (en) * | 2001-09-28 | 2003-04-09 | Mitsubishi Electric Corp | Elevator device |
| JP4553535B2 (en) * | 2001-09-28 | 2010-09-29 | 三菱電機株式会社 | Elevator equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55136755U (en) | 1980-09-29 |
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