JPS6325002Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an induction coil holding device for an electromagnetic stirring device for continuous casting.

It is known that the unsolidified part of a slab during casting is stirred by electromagnetic induction to improve its internal structure.

Conventional induction coil holding devices for electromagnetic stirring devices include those shown in FIGS. 1, 2, and 3. In the figure, reference numeral 1 denotes a frame, and a salient magnetic pole 2 is provided on the inner peripheral wall of the frame. Reference numeral 3 denotes an induction coil wound around these magnetic poles, 4 a wedge installed between these induction coils, and 5 a spacer for pressing and holding the side surface of the induction coil, as shown in FIG. 3. ing. Although not shown, a mold in which molten metal flows is provided on the inner peripheral side of these magnetic poles.

Next, a method for holding the induction coil will be explained.

The induction coil is held as follows. First, insert the spacer 5, then insert the coil 3a into the magnetic pole 2a, and then insert the coil 3b into the magnetic pole 2b.
, insert the wedge 4 from the magnetic pole tip, and fix the coil 3 and spacer 5.

Conventionally, as described above, the spacer 5 is an integral part, so if the finished dimensions of the coil are too large or too small, for example, if the finished coil dimensions are too large, the wedge 4 will be hard when inserted, damaging the insulation of the coil 3. Furthermore, when the coil dimensions are made small, the wedges and spacers cannot sufficiently secure the coil, causing the coil to vibrate during operation, resulting in an accident.

This idea was made in order to eliminate the drawbacks of the conventional ones as described above. By making the spacer 5 a separate piece instead of an integral piece, it is possible to easily finely adjust the spacer, and it is possible to make it difficult to fix the coil. It is intended to be completely fixed.

An embodiment of this invention will be described below with reference to FIG.

In the figure, 5 is a spacer corresponding to that in FIG. 3, which is vertically divided into three parts 5a, 5b, and 5c.

Note that the other configurations are the same as those of the prior art, so explanations will be omitted.

Next, the assembly method will be explained.

Coil fixing is almost the same as the conventional method, but first the coils 3a and 3b are inserted into the magnetic poles, and then the spacer 5 is inserted.
After inserting a and 5c, spacer 5 is inserted between them.
Insert b firmly. Finally, wedge 4 is inserted to fix coil 3 and spacer 5.

In this embodiment, the spacer 5 is divided vertically and horizontally, but the spacer 5 may be divided diagonally with a slope.

As described above, according to this invention, it is easy to finely adjust the spacer, it is possible to prevent damage to the coil insulation when inserting the wedge, and it is possible to fix the spacer, wedge, coil, etc. in an integrated manner, and it is possible to This has the effect of preventing damage to the coil due to vibration.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view of a conventional induction coil holding device, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view of the spacer shown in Fig. 2, and Fig. 4 is an example of this invention. FIG. 2 is a perspective view of a spacer, which is a main part of the embodiment. 1... Frame, 2... Magnetic pole, 3... Induction coil, 4... Wedge, 5, 5a, 5b, 5c... Spacer. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] An induction coil holding device for an electromagnetic stirrer for continuous casting, comprising a frame having a plurality of salient magnetic poles on its inner peripheral wall, an induction coil wound around these magnetic poles, and a spacer mounted between the induction coils to press and fix the side portion of the induction coil, wherein the spacer is divided into a plurality of pieces along the circumferential direction.