JPS63157082U

JPS63157082U -

Info

Publication number: JPS63157082U
Application number: JP4920587U
Authority: JP
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-10-14

Description

[Brief explanation of the drawing]

第１〜３図は本考案の一実施例としての板材吊
り上げ用電磁石装置を示すもので、第１図はその
制御系を示す電気回路図、第２図はその制御ブロ
ツク図、第３図はその制御要領を説明するための
フローチヤートであり、第４〜６図は従来の板材
吊り上げ用電磁石装置を示すもので、第４図はそ
のリフテイングマグネツトの配置例を示す模式図
、第５図はその制御系を示す電気回路図、第６図
はその制御要領を説明するためのフローチヤート
である。図において、１……吊りビーム、２……リフテ
イングマグネツト（電磁石）、３……ＳＣＲ（ス
イツチング素子）、８……電流検出器、２０……
リフテイングマグネツト本体、５０……制御手段
、比較手段、変更手段を構成するコントローラ、
６０……点弧装置。なお、図中、同一符号は同一
、又は相当部分を示す。 Figures 1 to 3 show an electromagnetic device for lifting plate materials as an embodiment of the present invention. Figure 1 is an electric circuit diagram showing its control system, Figure 2 is its control block diagram, and Figure 3 is an electrical circuit diagram showing its control system. This is a flowchart for explaining the control procedure, and Figs. 4 to 6 show a conventional electromagnet device for lifting plate materials, Fig. 4 is a schematic diagram showing an example of the arrangement of the lifting magnet, and Fig. 5 The figure is an electric circuit diagram showing the control system, and FIG. 6 is a flowchart for explaining the control procedure. In the figure, 1... hanging beam, 2... lifting magnet (electromagnet), 3... SCR (switching element), 8... current detector, 20...
Lifting magnet main body, 50... controller constituting control means, comparison means, and changing means;
60...Ignition device. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A plurality of electromagnets arranged along a hanging beam,
It comprises a switching element connected to an excitation circuit for each of the above electromagnets, and a control means for outputting an excitation command signal to each of the above switching elements,
A current detection means for detecting the excitation current flowing through each of the electromagnets described above is provided, as well as a comparison means for comparing the actual excitation current value detected by the current detection means with a command value, and a comparison means for comparing the actual excitation current value detected by the current detection means with a command value. An electromagnetic device for lifting a plate material, characterized in that it is provided with a changing means that can change the command signal to the switching element based on the result.