JPS5495442A - Method and device for controlling ingot stripper crane - Google Patents
Method and device for controlling ingot stripper craneInfo
- Publication number
- JPS5495442A JPS5495442A JP218978A JP218978A JPS5495442A JP S5495442 A JPS5495442 A JP S5495442A JP 218978 A JP218978 A JP 218978A JP 218978 A JP218978 A JP 218978A JP S5495442 A JPS5495442 A JP S5495442A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- motor
- starting
- secondary voltage
- ram
- 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
Abstract
PURPOSE: To detect an abnormal torque without measuring the push-out force of a push-out mechanism of a stripper crane for pushing an ingot out of a mold and easily control a ram driving motor with high accuracy.
CONSTITUTION: Tongues 1a, 1b of the stripper crane 1 are engaged with lugs 3a, 3b of the mold 3. The mold is lifted slightly. Then, a ram 4 is thrusted by the ram driving motor 11 in the direction of the arrow, thereby, pushing the ingot 5 out of the mold 3. The starting, stoppage and rotational speed of the motor 11 are controlled by a controller 16. The secondary voltage, namely, the output torque of the motor is detected by a secondary voltage detector, and the detection signal is entered into a starting compensation circuit 13. When said secondary voltage exceeds a level corresponding to a predetermined abnormal torque except in starting, the compensation circuit 13 generates a stopping signal to stop the motor 11.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP218978A JPS5495442A (en) | 1978-01-11 | 1978-01-11 | Method and device for controlling ingot stripper crane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP218978A JPS5495442A (en) | 1978-01-11 | 1978-01-11 | Method and device for controlling ingot stripper crane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5495442A true JPS5495442A (en) | 1979-07-27 |
Family
ID=11522405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP218978A Pending JPS5495442A (en) | 1978-01-11 | 1978-01-11 | Method and device for controlling ingot stripper crane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5495442A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109071186A (en) * | 2016-04-08 | 2018-12-21 | 利勃海尔比伯拉赫零部件有限公司 | Building machinery |
-
1978
- 1978-01-11 JP JP218978A patent/JPS5495442A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109071186A (en) * | 2016-04-08 | 2018-12-21 | 利勃海尔比伯拉赫零部件有限公司 | Building machinery |
CN109071186B (en) * | 2016-04-08 | 2020-10-02 | 利勃海尔比伯拉赫零部件有限公司 | Construction machine |
US11014789B2 (en) | 2016-04-08 | 2021-05-25 | Liebherr-Components Biberach Gmbh | Construction machine |
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