JPS63310400A - Solenoid brake with power-stoppage protective function - Google Patents
Solenoid brake with power-stoppage protective functionInfo
- Publication number
- JPS63310400A JPS63310400A JP14315587A JP14315587A JPS63310400A JP S63310400 A JPS63310400 A JP S63310400A JP 14315587 A JP14315587 A JP 14315587A JP 14315587 A JP14315587 A JP 14315587A JP S63310400 A JPS63310400 A JP S63310400A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- electromagnet
- superconductive
- power
- stoppage
- 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.)
- Pending
Links
- 230000009993 protective function Effects 0.000 title 1
- 230000002085 persistent effect Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回転機の制動装置に係り、特に、停電時にも
、安全に動作する電磁ブレーキに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a braking device for a rotating machine, and particularly to an electromagnetic brake that operates safely even during a power outage.
従来の装置は、電動機用直流ｆ４磁ブレーキ取扱説明書
、８１１ ＫＯ−４００４−３に記載のように、電磁石
が通電状態にて、ブレーキ弛みであり、電磁石の励磁を
解いた状態で、ブレーキ締りとなっていた。As described in the DC F4 magnetic brake instruction manual for electric motors, 811 KO-4004-3, the conventional device loosens the brake when the electromagnet is energized, and tightens the brake when the electromagnet is de-energized. It became.
しかし、停電時の動作については配慮されていなかった
。However, no consideration was given to operation during power outages.
上記従来技術は、停電時の動作については配慮されてお
らず、回転機が最高回転速度で回転している時に停電し
た場合、ｆ！電磁ブレーキ励磁が解かれるために、ただ
ちに制動４作に入り、ブレーキシュー等が焼損するとい
う問題点があった。The above conventional technology does not take into consideration the operation during power outages, and if a power outage occurs while the rotating machine is rotating at its maximum rotation speed, f! Since the electromagnetic brake excitation is released, four braking operations are immediately performed, which causes the brake shoes and the like to burn out.
本発明の目的は、停電時においても焼損の危険性がない
電磁ブレーキを提供する事にある。An object of the present invention is to provide an electromagnetic brake that is free from the risk of burnout even during a power outage.
Ｃ問題点を解決するための手段〕
上記目的は、電磁ブレーキの１！磁石として超電導マグ
ネットと、停電時には、永久電流モードに入るための超
電導スイッチを用いて、達成される。Means for solving problem C] The above purpose is 1! of the electromagnetic brake! This is accomplished using a superconducting magnet as the magnet and a superconducting switch to enter persistent current mode in the event of a power outage.
超電導コイルは、磁束を発生している状態で、入力端子
を短絡すると永久電流が流れ、磁束保持状態になる。従
って停電した際でも磁束の保持がでキルため、停電直後
に制動４作に移行することを防止でき、ブレーキシュー
の焼損が防げる。When the input terminals are short-circuited while the superconducting coil is generating magnetic flux, a persistent current flows and the superconducting coil enters the magnetic flux holding state. Therefore, even in the event of a power outage, the magnetic flux is retained and killed, so it is possible to prevent a shift to the fourth braking operation immediately after a power outage, and burnout of the brake shoes can be prevented.
以下、本発明の一実施例を第１図に、第２図に、従来の
電磁ブレーキの構成を示す、第２図ではブレーキが解放
された状態を示しており、ブレーキシュー８は、ブレー
キドラム９から離れており、回転体のシャフトに直結さ
れたブレーキドラムはフリーの状態である。この時、電
磁石１は励磁状態であり、アーマチュア７を吸引して、
制動ばね１０が伸びようとするのを押えている。Hereinafter, one embodiment of the present invention is shown in FIG. 1, and FIG. 2 shows the configuration of a conventional electromagnetic brake. FIG. The brake drum, which is separated from the rotor 9 and directly connected to the shaft of the rotating body, is in a free state. At this time, the electromagnet 1 is in an excited state and attracts the armature 7,
The brake spring 10 is restrained from expanding.
ところが停電により、電磁石の励磁がなくなると、電磁
石の吸引力がなくなり、アーマチュアは制動ばねにより
、押し返され、リンク機構によりブレーキシューがブレ
ーキドラムに押しつけられ制動がかかつてしまう。However, when the electromagnet is no longer energized due to a power outage, the attractive force of the electromagnet disappears, the armature is pushed back by the brake spring, and the link mechanism presses the brake shoe against the brake drum, resulting in increased braking.
本発明では、上記の如き停電直後の制動４作を防止する
ため第１図の様な構成とする。In the present invention, in order to prevent the above four braking operations immediately after a power outage, a structure as shown in FIG. 1 is adopted.
通常運転時には、電源６から供給される電力を通常動作
の制御部４により、ＯＮ、’０ＦＦＬ、、超電導電磁石
１を励磁、減磁する。この時、電圧検出器５の出力電圧
と基準電圧を比較し、平常状態であるため、制御器は、
超電導スイッチをＯＦＦしている。During normal operation, the superconducting electromagnet 1 is excited and demagnetized by the control unit 4 in normal operation using power supplied from the power source 6 to turn ON, '0FFL, and so on. At this time, the output voltage of the voltage detector 5 is compared with the reference voltage, and since it is in a normal state, the controller:
The superconducting switch is turned off.
電源電圧が低下し、比較器が停電であると判断すると、
制御器は、直ちに超電導スイッチ２をＯＮし、超電導電
磁石を永久電流モードにする。When the power supply voltage drops and the comparator determines that there is a power outage,
The controller immediately turns on the superconducting switch 2 and puts the superconducting electromagnet into persistent current mode.
これにより、電磁石の磁力が保持され、ブレーキドラム
はフリーの状態となる。As a result, the magnetic force of the electromagnet is maintained, and the brake drum becomes free.
そ、の後、回転体の速度が、制動により、ブレーキシュ
ーが焼損しない、低速になったとき、超電導スイッチ２
を０ＦＦＬ、、永久電流モードから抜は出し制動４作を
行う、この安全速度の判定は時限スイッチにより、およ
その時間で判定する場合と、速度信号を用いる場合が考
えられる。この様子を第３図に示す。After that, when the speed of the rotating body becomes low enough to prevent the brake shoes from burning out due to braking, superconducting switch 2 is activated.
is 0FFL, the brake is removed from the persistent current mode and four braking operations are performed.The safe speed can be determined in two ways: by using a timed switch and determining the approximate time, or by using a speed signal. This situation is shown in FIG.
超電導スイッチとしては、超電導体にヒータを接触させ
、ＴｃによるＳ−Ｎ転移を利用した場合、第３図に示す
如く、制御器出力電圧が高のとき。As a superconducting switch, when a heater is brought into contact with a superconductor and S-N transition due to Tc is utilized, as shown in FIG. 3, when the controller output voltage is high.
ヒータが通電され、超電導スイッチはＯＦＦとなる。The heater is energized and the superconducting switch is turned off.
尚、上記停電保護回路は、バッテリーでバックアップさ
れているものとする。It is assumed that the power failure protection circuit is backed up by a battery.
本発明によれば、停電した際に、電磁ブレーキが、無制
御に制動４作を行うのを防止でき、ブレーキシューの焼
損を防ぐことができる。According to the present invention, when a power outage occurs, it is possible to prevent the electromagnetic brake from performing four braking operations in an uncontrolled manner, and it is possible to prevent burnout of the brake shoes.
また、制動４作と、次の制動４作の間が長い場合、電磁
ブレーキを停電動作で使用することで。Also, if there is a long time between 4 braking operations and the next 4 braking operations, you can use the electromagnetic brake during power outage.
節電になる。Saves electricity.
第１図は、本発明の一実施例を示すブロック図、第２図
は、従来の電磁ブレーキの概略構成図、第３図は、本発
明による電磁ブレーキの停電時の動作についての説明図
である。
１・・・電磁石、２・・・超電導スイッチ、３・・・保
護抵抗、４・・・通常動作時の制御部、５・・・電源電
圧の検出器、６・・・電源、７・・・アーマチュア、８
・・・ブレーキシュ系１０
第２０
第３区FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a conventional electromagnetic brake, and FIG. 3 is an explanatory diagram of the operation of the electromagnetic brake according to the present invention during a power outage. be. DESCRIPTION OF SYMBOLS 1... Electromagnet, 2... Superconducting switch, 3... Protective resistor, 4... Control unit during normal operation, 5... Power supply voltage detector, 6... Power supply, 7...・Armature, 8
...Brake brake system 10 20th ward
Claims (1)
ブレーキドラムの両側から、制動ばねの力により、ブレ
ーキシューをブレーキドラムに押しつけることで制動ト
ルクを発生し、電磁石を励磁することにより、ブレーキ
シューと連結されたアーマチュアを電磁石が吸引し、ブ
レーキシューを開かせて、ブレーキの開放を行う電磁ブ
レーキにおいて、アーマチュアの吸引装置として、超電
導マグネット及び、超電導スイッチを設けたことを特徴
とする、停電保護機能付の電磁ブレーキ。1. The brake drum rotates with the shaft of the rotating body, and from both sides of the brake drum, the force of the braking spring is used to press the brake shoes against the brake drum to generate braking torque, and by exciting the electromagnet, the brake shoes An electromagnetic brake in which an electromagnet attracts an armature connected to an armature to open a brake shoe and release the brake, which is characterized by having a superconducting magnet and a superconducting switch as a suction device for the armature. Functional electromagnetic brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14315587A JPS63310400A (en) | 1987-06-10 | 1987-06-10 | Solenoid brake with power-stoppage protective function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14315587A JPS63310400A (en) | 1987-06-10 | 1987-06-10 | Solenoid brake with power-stoppage protective function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63310400A true JPS63310400A (en) | 1988-12-19 |
Family
ID=15332199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14315587A Pending JPS63310400A (en) | 1987-06-10 | 1987-06-10 | Solenoid brake with power-stoppage protective function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63310400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006307451A (en) * | 2005-04-26 | 2006-11-09 | Sanwa Shutter Corp | Emergency opening device of fast shutter |
-
1987
- 1987-06-10 JP JP14315587A patent/JPS63310400A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006307451A (en) * | 2005-04-26 | 2006-11-09 | Sanwa Shutter Corp | Emergency opening device of fast shutter |
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