JPS6044226B2 - Elevator safety device - Google Patents

Elevator safety device

Info

Publication number
JPS6044226B2
JPS6044226B2 JP52049183A JP4918377A JPS6044226B2 JP S6044226 B2 JPS6044226 B2 JP S6044226B2 JP 52049183 A JP52049183 A JP 52049183A JP 4918377 A JP4918377 A JP 4918377A JP S6044226 B2 JPS6044226 B2 JP S6044226B2
Authority
JP
Japan
Prior art keywords
car
output
electric motor
load
adder
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
Application number
JP52049183A
Other languages
Japanese (ja)
Other versions
JPS53136250A (en
Inventor
成宏 寺園
宏 釜池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP52049183A priority Critical patent/JPS6044226B2/en
Publication of JPS53136250A publication Critical patent/JPS53136250A/en
Publication of JPS6044226B2 publication Critical patent/JPS6044226B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Description

【発明の詳細な説明】 この発明は負荷補償装置を備えたエレベータの安全装置
の改良に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved safety device for an elevator equipped with a load compensation device.

エレベータの停止中かご駆動用電動機には、かごとつり
合おもりの重量差による不平衡トルクが作用している。
When the elevator is stopped, an unbalanced torque is applied to the car drive electric motor due to the difference in weight between the car and the counterweight.

そのため、エレベータの起動時ブレーキを開放すると、
かごは上記不平衡トルクの作用している方向へ引かれる
ことになり、かごの乗心地を害する。これを改善するた
め、かご内の負荷を検出し、これに対応する負荷補償指
令を発して、ブレーキによつて拘束された電動機に電流
を流し、上記不平衡トルクを補償するトルクを発生させ
ることが行われている。これにより、ブレーキを開放し
たときかご内に衝撃を与えることなく起動することがで
きる。しかし、上記負荷補償指令を発する装置が何等か
の故障で、出力が増大すると、電動機に流れる負荷補償
電流も増大する。
Therefore, when the brake is released when starting the elevator,
The car is pulled in the direction in which the unbalanced torque is acting, which impairs the riding comfort of the car. In order to improve this, the load inside the car is detected, a corresponding load compensation command is issued, and current is sent to the electric motor restrained by the brake, thereby generating torque that compensates for the unbalanced torque. is being carried out. Thereby, when the brake is released, the car can be started without any impact being applied to the inside of the car. However, if the device that issues the load compensation command increases its output due to some kind of failure, the load compensation current flowing through the motor also increases.

そ1、て、それによる電動機トルクがブレーキトルク以
上になると、かごはブレーキが作用したまま動き出すこ
とになる。特にかごの戸が開いたまま動くようなことに
なれば甚だ危険である。この発明は上記不具合を改良す
るもので、負荷補償指令が異状となつたときでも、電動
機がブレーキによつて拘束されたままかごが起動するこ
とがないようにしたエレベータの安全装置を提供するこ
とを目的とする。
First, if the resulting motor torque exceeds the brake torque, the car will start moving with the brake still applied. It is especially dangerous if the car door moves with it open. The present invention aims to improve the above-mentioned problems, and provides a safety device for an elevator that prevents the car from starting while the electric motor is restrained by the brake even when the load compensation command becomes abnormal. With the goal.

以下、第1図〜第3図によりこの発明の一実施例を説明
する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

第1図中、1はエレベータのかご、2はかご1内の負荷
を検出する負荷検出装置で、2aはその”出力、3はつ
り合おもり、4はかご1とつり合おもり3を結合する主
索、5は綱車、6は罰車5を駆動するかご駆動用電動機
の電機子(界磁は省略)、7は電機子6に電力を供給す
る発電機の電機子、8はその他磁界磁、9は電流検出器
、10、は負荷検出装置2の出力2aに応じて第2図に
示すような出力10aを発する負荷補償指令発生装置、
11は加算器で、11aはその出力である偏差信号、1
2は界磁8の電流を制御する制御装置てある。
In Figure 1, 1 is an elevator car, 2 is a load detection device that detects the load in car 1, 2a is its output, 3 is a counterweight, and 4 is a main unit that connects car 1 and counterweight 3. 5 is a sheave; 6 is the armature of the car drive motor that drives the penalty wheel 5 (the field is omitted); 7 is the armature of the generator that supplies power to the armature 6; 8 is the other magnetic field. , 9 is a current detector; 10 is a load compensation command generator that generates an output 10a as shown in FIG. 2 in response to the output 2a of the load detection device 2;
11 is an adder, 11a is the output of the deviation signal, 1
Reference numeral 2 denotes a control device for controlling the current of the field 8.

第3図中、R,Sは交流電源、15は変圧器、16は点
弧回路、17〜20はサイリスタ、21〜25は抵抗、
26はかご1の起動時負荷補償指令発生装置10が出力
10aを発しているとき開放しており、かご1の走行中
は閉成している負荷補償動作検出リレー接点である。
In Fig. 3, R and S are AC power supplies, 15 is a transformer, 16 is an ignition circuit, 17-20 are thyristors, 21-25 are resistors,
Reference numeral 26 denotes a load compensation operation detection relay contact that is open when the load compensation command generating device 10 is outputting the output 10a at the time of starting the car 1, and is closed while the car 1 is running.

かご1の起動時、負荷検出装置2はかご1内の負荷に応
じた出力2aを発生する。
When the car 1 is started, the load detection device 2 generates an output 2a according to the load inside the car 1.

これにより、負荷補償指令発生装置10の出力10aは
、かご1内負荷が第2図図の平衡負荷WOすなわちかご
1とつり合おもりが丁度平衡するよう乗客負荷のとき零
となる。そして平衡負荷WOから全負荷Wf・\の側と
、無負荷Wnへの側とで出力10aの極性は逆になる。
出力10aと電流検出器9は加算器11で照合され、そ
の偏差信号11aは制御回路12へ入力される。制御回
路12の変圧器15、サイリスタ17〜20、抵抗22
〜25は発電機界磁8に正負の電流を供給するプッシュ
プル増幅器を構成している。
As a result, the output 10a of the load compensation command generating device 10 becomes zero when the load inside the car 1 is the balanced load WO in FIG. 2, that is, the passenger load so that the car 1 and the counterweight are exactly balanced. The polarity of the output 10a is reversed between the side from the balanced load WO to the full load Wf.\ and the side from the no-load Wn.
The output 10a and the current detector 9 are compared by an adder 11, and the deviation signal 11a is input to the control circuit 12. Transformer 15, thyristors 17 to 20, and resistor 22 of control circuit 12
25 constitutes a push-pull amplifier that supplies positive and negative currents to the generator field 8.

点弧回路16は偏差信号11aの極性に応じて、サイリ
スタ17、20又はサイリスタ18、19を点弧制御す
る。負荷補償動作時は、負荷補償動作検出リレー接点2
6は開放しているので、抵抗21が回路に挿入されてい
る。そのため、界磁8への最大電流が制限される。抵抗
21を適当な値に選択することにより、界磁8に流れる
最大電流を、上記不平衡トルクの最大値(もちろんこの
不平衡トルクはブレーキで十分保持し得る。).に相当
する値に制限することができる。このように調整するこ
とにより、万一負荷検出器2の出力線の接触不良、負荷
補償指令発生装置10を構成する半導体素子の破損、及
び加算器11の故障等があつても、制御回路12の出力
12。
The ignition circuit 16 controls the ignition of the thyristors 17 and 20 or the thyristors 18 and 19 depending on the polarity of the deviation signal 11a. During load compensation operation, load compensation operation detection relay contact 2
6 is open, so a resistor 21 is inserted into the circuit. Therefore, the maximum current to the field 8 is limited. By selecting an appropriate value for the resistor 21, the maximum current flowing through the field 8 can be adjusted to the maximum value of the unbalanced torque (of course, this unbalanced torque can be sufficiently maintained by the brake). can be limited to a value corresponding to . By adjusting in this way, even if there is a poor connection of the output line of the load detector 2, damage to the semiconductor element constituting the load compensation command generation device 10, failure of the adder 11, etc., the control circuit 12 Output 12.

aは大幅に増加することはない。なお、かご1が走行を
開始すれば、接点26は閉成し、制御装置12は通常の
動作に復帰する。
a will not increase significantly. Note that when the car 1 starts running, the contacts 26 are closed and the control device 12 returns to normal operation.

この発明は以上述べたとおり、かご駆動用電動機の発生
するトルクに対応する信号を負帰還し、この負帰還され
た信号と上記かご負荷に応じた出力を発する負荷検出装
置の出力信号とを加算器で加算し、この加算器の出力に
応じたトルクを上記かご駆動用電動機に発生させた状態
でブレーキを解放し走行運転するようにしたエレベータ
において、上記加算器の出力信号が異常に増大したとき
でも上記かご駆動用電動機のトルクを上記ブレー1キの
制動のトルク以下に制限する制限素子を上記加算器の出
力端と上記かこ駆動用電動機との間に縦続接続するとと
もに、走行運転時は上記制限素子の制限量を減少させる
回路素子を設けたものである。このため、加算器の出力
が異常に増大しても、ブレーキが作動しておれば、かご
が動き出すことはないので、負荷補償を安全に行うこと
ができる。
As described above, the present invention provides negative feedback of a signal corresponding to the torque generated by the car drive motor, and adds this negative feedback signal to the output signal of the load detection device that generates an output according to the car load. The output signal of the adder increased abnormally in an elevator in which the brake was released and the elevator was operated with the car driving electric motor generating torque corresponding to the output of the adder. A limiting element for limiting the torque of the car driving electric motor to below the braking torque of the brake 1 is connected in cascade between the output terminal of the adder and the car driving electric motor even when the car is running. A circuit element is provided to reduce the amount of restriction of the restriction element. Therefore, even if the output of the adder increases abnormally, as long as the brake is in operation, the car will not start moving, so load compensation can be performed safely.

また、走行運転に移行した場合は、制限素子の制限量を
減少させるので、所要のトルクをかご駆動用電動機に発
生させることができ、意図した速度制御が可能となる。
Furthermore, when the vehicle starts running, the limiting amount of the limiting element is reduced, so that the required torque can be generated in the car driving electric motor, and the intended speed control becomes possible.

図面の簡単な説明第1図はこの発明によるエレベータの
安全装置の一実施例を示す構成図、第2図は第1図の負
荷補償指令発生装置の出力特性図、第3図は第1図の制
御装置の回路図である。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an embodiment of an elevator safety device according to the present invention, FIG. 2 is an output characteristic diagram of the load compensation command generator shown in FIG. 1, and FIG. 3 is a diagram showing the output characteristics of the load compensation command generator shown in FIG. FIG.

1・・・・・・かご、2・・・・・・負荷検出装置、3
・・・・・つり合おもり、5・・・・・・綱車、6・・
・・・・かご駆動用電動機の電機子、7・・・・・・発
電機の電機子、8・・・・・・同左他励界磁、9・・・
・・・電流検出器、10・・・・・・負荷補償指令発生
装置、11・・・・・加算器、12・・・・・制御装置
、15・・・・・・変圧器、16・・・・・・点弧回路
、17〜20・・・・・・サイリスタ、21〜25・・
・・・・抵抗、26・・・・・・負荷補償動作検出リ
レー接点(回路素子)。
1... Car, 2... Load detection device, 3
... Counterweight, 5 ... Sheave, 6 ...
... Armature of car drive motor, 7 ... Armature of generator, 8 ... Same as left separately excited field, 9 ...
...Current detector, 10...Load compensation command generation device, 11...Adder, 12...Control device, 15...Transformer, 16... ...Ignition circuit, 17-20...Thyristor, 21-25...
...Resistance, 26...Load compensation operation detection relay contact (circuit element).

Claims (1)

【特許請求の範囲】[Claims] 1 かご駆動用電動機の発生するトルクに対応する信号
を負帰還し、この負帰還された信号と上記かご内負荷に
応じた出力を発する負荷検出装置の出力信号とを加算器
で加算し、この加算器の出力に応じたトルクを上記かご
駆動用電動機に発生させた状態でブレーキを解放し走行
運転するようにしたエレベータにおいて、上記加算器の
出力信号が異常に増大したときでも上記かご駆動用電動
機のトルクを上記ブレーキの制御トルク以下に制限する
制限素子を上記加算器の出力端と上記かご駆動用電動機
との間の縦続接続することともに、走行運転時は上記制
限素子の制限量を減少させる回路素子を設けたことをを
特徴とするエレベータの安全装置。
1 Negatively feed back a signal corresponding to the torque generated by the car drive electric motor, add this negative-feedback signal and the output signal of the load detection device that generates an output according to the load in the car using an adder, In an elevator in which the car driving electric motor generates torque corresponding to the output of the adder, the brake is released and the elevator runs, and even when the output signal of the adder increases abnormally, the car driving electric motor A limiting element that limits the torque of the electric motor to below the control torque of the brake is connected in cascade between the output terminal of the adder and the car driving electric motor, and the limiting amount of the limiting element is reduced during running operation. A safety device for an elevator, characterized in that it is provided with a circuit element that causes the
JP52049183A 1977-04-28 1977-04-28 Elevator safety device Expired JPS6044226B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52049183A JPS6044226B2 (en) 1977-04-28 1977-04-28 Elevator safety device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52049183A JPS6044226B2 (en) 1977-04-28 1977-04-28 Elevator safety device

Publications (2)

Publication Number Publication Date
JPS53136250A JPS53136250A (en) 1978-11-28
JPS6044226B2 true JPS6044226B2 (en) 1985-10-02

Family

ID=12823917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52049183A Expired JPS6044226B2 (en) 1977-04-28 1977-04-28 Elevator safety device

Country Status (1)

Country Link
JP (1) JPS6044226B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002087715A (en) * 2000-09-12 2002-03-27 Toshiba Corp Elevator control device
JP2003095546A (en) * 2001-09-21 2003-04-03 Toshiba Elevator Co Ltd Control device of elevator

Also Published As

Publication number Publication date
JPS53136250A (en) 1978-11-28

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