JPS63215028A - Method of assembling core for stationary induction apparatus - Google Patents

Abstract

PURPOSE:To reduce remarkably the assembling time of iron core, by arranging block type legs and yokes around a coil, and inserting a yoke rectangular to the leg in the core. CONSTITUTION:A block type leg 7a is fastened by an upper and a lower plates 21 and 5a arranged on the leg. The fastened leg is boosted by the plate 21, and the boosted boosted block type leg 7a is inserted into a window 4 to be arranged. Yokes 7c in a position parallel to the leg 7a are shifted by an overlap dimension, and laminated in the form of a block. The yokes 7c constituted in the form of a block are arranged on a spacer 6, and are boosted via the spacer 6. The boosted block type yokes 7c are arranged in the parallel position to the leg 7a outside the coil window 4. Thereby, the assembling time of iron core can be remarkably reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method for assembling an iron core for stationary induction equipment, and in particular to an iron core for stationary induction equipment that is constructed by overlapping core blanks at corner joints. This relates to an assembly method.

[Conventional technology]

FIG. 4 shows a conventional general stationary induction device, a Gaitetsu transformer.

In the figure, a lower tank 7 flange (2) is provided around the upper surface of the lower tank (1). A coil (3) with a coil window (4) is arranged in the lower tank (1) so as to protrude above the lower tank (1). A tongue support (5) is disposed at the bottom of the coil window (4) and supported by the upper surface of the lower tank flange (2).

The lower spacer (6) is inserted between the lower surface of the outer peripheral side of the iron core and the lower tank 7 flange (2).

A tongue wedge (8) is inserted into the upper end of the coil window (4).

A core presser (11) is arranged on the upper surface of the outer peripheral side of the core (7) with the spacer (9) interposed therebetween.

Around the lower surface of the upper tank (10), there is an upper tank 7 lunge (12) welded to the lower tank 7 lunge (2).
is provided.

Next, a brief explanation will be given of the assembly procedure of the outer iron transformer constructed as described above.

First, place the coil (3) in the lower tank (1).

Next, place the tank support (5) at the bottom inside the coil window (4) so that both ends of the tank support (5) in the length direction rest on the lower tank 7 langes (2), and A lower spacer (6) is placed above the 7-lunge (2).

Next, after laminating the iron core (7) layer by layer on the tongue support (5) and the lower spacer (6), the upper spacer (9) is placed on the iron core (7) on the outer periphery of the coil (3), and the coil window is closed. Drive and insert the tank wedge (8) between the iron core (7) and the coil (3) in (4).

Inserting the tongue wedge (8) in particular tightens the iron core inside the coil window (4), and the weight of the coil (3) and iron core (7) is transferred through the tank support (5). , will be supported by the lower tank (1).

Next, cover the upper tank (10) from above, and press from the iron core holder (11) K provided on the inner circumference of the upper tank (10).
The iron core (7) on the outer periphery of the coil (3) is tightened.

Finally, the upper tank 7 flange (12) and the lower tank flange (12) provided around the bottom of the upper tank (10)
2) Weld and fix between.

As shown in FIG. 5, the iron core (7) has legs (7a),
A yoke (7) connected at right angles to the leg (7a).
b), a yoke (7c) provided parallel to the leg (7a);
), and by alternately stacking the core blanks indicated by solid lines and broken lines one layer at a time, the corner joints of the core (7) have a structure in which the core blanks overlap each other, as shown in Figure 4. The iron core (7) shown in is obtained.

[Problem to be solved by the invention 1 In the conventional stationary induction equipment as described above, the iron core is laminated in one layer.
Since this is done layer by layer, it takes a lot of work time to obtain the core with a predetermined stacking height, and it also requires positioning each time each layer is laminated, so there is a problem that the core is likely to shift. there were.

The present invention has been made to solve these problems, and an object of the present invention is to provide a method for assembling an iron core for stationary induction equipment, which can assemble an iron core in a short time and is free from misalignment.

[Means for solving problems]

The method for assembling an iron core for a stationary induction device according to the present invention is to arrange at least one block of a leg and a yoke parallel to the leg around a coil, in which core blanks are stacked in advance by a lap dimension and stacked to form a block. I am telling you to place it.

[For production]

In this invention, the legs of the iron core, the yokes parallel to the legs, or both are individually stacked in advance in the form of blocks, each of which is hung and placed around the coil in turn, and then inserted into the previously placed block to form the core. By this, it is fixed and constitutes an iron core.

〔Example〕

1 to 3 show an embodiment of the assembly method of the present invention.

In the figure, symbols (1) to (3) * (611(07
a) and (7c) are the same as or equivalent to those with the same reference numerals shown in FIGS. 4 and 5 showing the conventional method.

First, the procedure will be explained with reference to FIG.

On the upper surface of the lower plate, for example, the tank support (5a), core blanks are alternately stacked with a difference of the lap dimension to form two rows of block-shaped legs (7a).

A presser plate (21) is brought into contact with the leg (7a), and the leg (7a) is tightened between the tank support (5a) and the upper plate, for example, the presser plate (21), using a tightening plate (22).

Next, connect the connecting bolt (23) provided on the lower surface of the hanging beam (25a) and the holding plate (21).
24) to fix the connection.

Next, lift the suspension beam (25a) with a lifting machine and insert the leg (7a) into the coil window (4) of the coil (3) at the arrow A.
and place the tank support (5a) in position on the upper surface of the lower tank 7 flange (2) as shown in FIG.

Next, if the tightening bolt (22) is removed and the hanging beam (25a) is lifted out of the coil window (4) using a lifting machine, the leg (7a) remains inside the coil window (4).

In addition, in FIG. 1, the shape of the hanging beam (25a) is C-shaped, but like the hanging beam (25b) shown in FIG. 2, it may have a linear shape.

Next, FIG. 3 shows how to assemble the yoke (7c) parallel to the leg (7a).

On the upper surface of the lower spacer (6), core blanks are alternately stacked to a required height while being shifted by the lap dimension to form a block-shaped yoke (7C).

Next, the lifting rope is passed through the oil groove (26) provided at the bottom of the lower spacer (6), and the yoke (7c) is lifted up by a lifting machine, and the leg (7a) is
) in a predetermined position on the upper surface of the lower tank 7 lunge (2). Next, remove the lifting rope and the yoke (
7C) remains.

In the above method, the core pile height in the coil window (4) is insufficient by the thickness of the suspension beam (25a) or (25b), so this shortage can be compensated for by laminating the layers by the same method as before. Bye.

Further, the yoke (7b) includes the leg (7a) and the yoke (
After the arrangement of 7C), it is obtained by inserting the core one layer at a time.

The subsequent steps are the same as the conventional method described above.

〔Effect of the invention〕

As explained above, in this invention, a leg and a yoke in a position parallel to the leg are formed in advance into a block shape, and this block has a block-like leg and a yoke arranged around the coil, and a yoke perpendicular to the leg. By using a straight core, the time for assembling the core can be significantly reduced.
In addition, since the leg and yoke can have an iron core without any displacement, it is possible to obtain an economical and improved method of assembling an iron core for stationary induction equipment in terms of quality.

[Brief Description of the Drawings] Fig. 1 is a side view showing an embodiment of the method of attaching a leg to a coil according to the present invention, Fig. 2 is a side view showing another embodiment of Fig. 1, and Fig. 3 4 is a side view showing an embodiment of the method of attaching the yoke parallel to the legs to the coil according to the present invention, FIG. -VIIK is a cross-sectional view. (3) Coil, (4) Coil window, (5a) a.
Lower grate (tang support, (6) lower spacer,
(7a)...Leg, (7c)...Yoke, (21)...
- Upper plate (pressing plate). In each figure, the same reference numerals indicate the same or corresponding parts. 3: Fill 4: Coil chamber/5a: Lower plate (2-way support) 7d:
ttsuku" 21: Gokichi P Ko#L-t (Ko P board) 6: Shimotsuke space 7C: York

Claims (1)

[Scope of Claims] In an iron core for stationary induction equipment having a structure in which core blanks overlap each other at corner joints, the legs are stacked in advance by shifting the above overlap dimension to form a block shape, tightening the leg with upper and lower plates disposed above and below the leg, and then lifting it up by the upper plate and inserting and arranging the lifted block-shaped leg into the coil window; , the yokes parallel to the legs are stacked by shifting the overlap dimension to form a block shape, the yoke formed in the block shape is placed on a spacer, and the yoke is lifted through this spacer, and then 1. A method for assembling an iron core for a stationary induction device, comprising at least one of the steps of arranging a lifted block-shaped yoke in a position parallel to the legs outside the coil window.