JPS6469495A - Lifting magnet hung-load falling preventive circuit - Google Patents
Lifting magnet hung-load falling preventive circuitInfo
- Publication number
- JPS6469495A JPS6469495A JP22413287A JP22413287A JPS6469495A JP S6469495 A JPS6469495 A JP S6469495A JP 22413287 A JP22413287 A JP 22413287A JP 22413287 A JP22413287 A JP 22413287A JP S6469495 A JPS6469495 A JP S6469495A
- Authority
- JP
- Japan
- Prior art keywords
- command
- switch
- attraction
- reset
- effect
- 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.)
- Granted
Links
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
PURPOSE: To surely prevent hanging-cargo drop accidents by providing the control circuit of each operating system with a self-hold circuit which self-holds a command for excitation and a reset circuit which resets the command for excitation. CONSTITUTION: When an attracting operation is effected by means of a control switch S4 while a switch S is switched to a radio system, a radio command A2 for attraction is held. In that state, when a switch S5 is turned on to effect a switching operation, the command A2 for attraction is reset and a magnet becomes unmagnetized. Further, when the switches S5 , S6 are sequentially turned on to effect a releasing operation, the command A2 for attraction is reset and the magnet is reversely magnetized. When the switch S is used for switching to on-car selection, the radio command A2 for attraction is held set even if an on-car control switch is in an off position or a releasing position, and materials do not drop. When it is desired to effect an off operation or a releasing operation, the switch S1 is turned on once to set a command A1, and after the command A2 is reset, the off operation or releasing operation is effected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22413287A JPS6469495A (en) | 1987-09-09 | 1987-09-09 | Lifting magnet hung-load falling preventive circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22413287A JPS6469495A (en) | 1987-09-09 | 1987-09-09 | Lifting magnet hung-load falling preventive circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6469495A true JPS6469495A (en) | 1989-03-15 |
JPH0524073B2 JPH0524073B2 (en) | 1993-04-06 |
Family
ID=16809045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22413287A Granted JPS6469495A (en) | 1987-09-09 | 1987-09-09 | Lifting magnet hung-load falling preventive circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6469495A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2754634A1 (en) * | 2013-01-15 | 2014-07-16 | BLG Cargo Logistics GmbH & Co. KG | Device for handling loads |
-
1987
- 1987-09-09 JP JP22413287A patent/JPS6469495A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2754634A1 (en) * | 2013-01-15 | 2014-07-16 | BLG Cargo Logistics GmbH & Co. KG | Device for handling loads |
Also Published As
Publication number | Publication date |
---|---|
JPH0524073B2 (en) | 1993-04-06 |
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