JPS61148887U - - Google Patents
Info
- Publication number
- JPS61148887U JPS61148887U JP3163885U JP3163885U JPS61148887U JP S61148887 U JPS61148887 U JP S61148887U JP 3163885 U JP3163885 U JP 3163885U JP 3163885 U JP3163885 U JP 3163885U JP S61148887 U JPS61148887 U JP S61148887U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- motor
- electromagnetic brake
- detection relay
- series
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Stopping Of Electric Motors (AREA)
- Control And Safety Of Cranes (AREA)
Description
第１図はこの考案の一実施例による電動巻揚機
の回路図、第２図は従来の電動巻揚機の回路図で
ある。
１…断路器、２，３…コンタクタコイル、４…
サーマルリレー本体、５…電動機、６…電磁ブレ
ーキ、１０…補助リレーコイル、２１…抵抗器、
２２…ブレーキ作動検出リレー、２２ａ…ブレー
キ作動検出リレー出力接点。なお、図中、同一符
号は同一または相当部分を示す。
FIG. 1 is a circuit diagram of an electric hoist according to an embodiment of this invention, and FIG. 2 is a circuit diagram of a conventional electric hoist. 1... Disconnector, 2, 3... Contactor coil, 4...
Thermal relay body, 5... Electric motor, 6... Electromagnetic brake, 10... Auxiliary relay coil, 21... Resistor,
22... Brake operation detection relay, 22a... Brake operation detection relay output contact. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
前記電磁ブレーキ回路と直列にその動作電流を検
出する抵抗器を接続し、この抵抗器と並列に電源
側が上記電動巻揚機用電動機の起動と同時に閉成
されるリレー接点を介して制御電源に接続され、
上記抵抗器に発生する電圧により動作するブレー
キ作動検出リレーを接続し、この検出リレーの出
力接点を上記電動機の起動回路に直列に挿入する
とともに、上記電磁ブレーキ回路の故障時に、上
記ブレーキ作動検出リレーの出力接点が動作する
ことによつて上記起動回路を開路させるようにし
たことを特徴とする電動巻揚機。 In an electric hoist equipped with an electromagnetic brake,
A resistor for detecting the operating current is connected in series with the electromagnetic brake circuit, and in parallel with this resistor, the power supply side is connected to the control power supply via a relay contact that is closed at the same time as the start of the electric hoist motor. connected,
A brake operation detection relay operated by the voltage generated in the resistor is connected, and the output contact of this detection relay is inserted in series with the starting circuit of the motor, and when the electromagnetic brake circuit fails, the brake operation detection relay An electric winding machine characterized in that the starting circuit is opened by operating the output contact of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3163885U JPS61148887U (en) | 1985-03-04 | 1985-03-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3163885U JPS61148887U (en) | 1985-03-04 | 1985-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61148887U true JPS61148887U (en) | 1986-09-13 |
Family
ID=30532417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3163885U Pending JPS61148887U (en) | 1985-03-04 | 1985-03-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61148887U (en) |
-
1985
- 1985-03-04 JP JP3163885U patent/JPS61148887U/ja active Pending