JPS5971288U - zero gravity hoist - Google Patents
zero gravity hoistInfo
- Publication number
- JPS5971288U JPS5971288U JP16683282U JP16683282U JPS5971288U JP S5971288 U JPS5971288 U JP S5971288U JP 16683282 U JP16683282 U JP 16683282U JP 16683282 U JP16683282 U JP 16683282U JP S5971288 U JPS5971288 U JP S5971288U
- Authority
- JP
- Japan
- Prior art keywords
- current
- induction motor
- electromagnetic clutch
- current transformer
- zero
- 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
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の無重力ホイストの構成図、第２図は本考
案の一実施例を示す回路構成図である。
１・・・誘導電動機、２・・・電磁クラッチ、３・・・
ドラム、４・・・負荷、１７・・・メモリ、１８・・・
増巾器、１９・・・変流器、２０・・・整流器、２１・
・・ローパスフィルタ。FIG. 1 is a block diagram of a conventional zero-gravity hoist, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1... Induction motor, 2... Electromagnetic clutch, 3...
Drum, 4...Load, 17...Memory, 18...
amplifier, 19... current transformer, 20... rectifier, 21.
...Low pass filter.
Claims (1)
するドラムに伝達すると共に、上げまたは下げ指令値を
記憶するメモリを有する制御回路を介して前記電磁クラ
ッチの励磁電流を制御してドラムの伝達力を調整するよ
うにしたものに於て、前記誘導電動機の一次電流を検出
するための変流器、この変流器にて検出された検出信号
を整流する整流器とを設け、この整流器にて整流された
前記検出信号と前記メモリにて記憶された記憶量との偏
差を求め、この偏差量に応じて前記電磁クラッチの励磁
電流を制御するように構成したことを特徴とする無重力
ホイスト。The rotational force of the induction motor is transmitted via an electromagnetic clutch to the drum on which the load is suspended, and the excitation current of the electromagnetic clutch is controlled via a control circuit having a memory that stores a raising or lowering command value to control the drum. In a device adapted to adjust the transmission force, a current transformer for detecting the primary current of the induction motor and a rectifier for rectifying the detection signal detected by the current transformer are provided, and the rectifier is provided with a current transformer for detecting the primary current of the induction motor. A zero-gravity hoist characterized in that the zero-gravity hoist is configured to obtain a deviation between the detection signal rectified by the sensor and a storage amount stored in the memory, and to control the excitation current of the electromagnetic clutch according to the deviation amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16683282U JPS5971288U (en) | 1982-11-02 | 1982-11-02 | zero gravity hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16683282U JPS5971288U (en) | 1982-11-02 | 1982-11-02 | zero gravity hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5971288U true JPS5971288U (en) | 1984-05-15 |
Family
ID=30365152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16683282U Pending JPS5971288U (en) | 1982-11-02 | 1982-11-02 | zero gravity hoist |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5971288U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5693700A (en) * | 1979-12-27 | 1981-07-29 | Meidensha Electric Mfg Co Ltd | Balance conveyor |
-
1982
- 1982-11-02 JP JP16683282U patent/JPS5971288U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5693700A (en) * | 1979-12-27 | 1981-07-29 | Meidensha Electric Mfg Co Ltd | Balance conveyor |
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