JP2003151842A - Deassembling method and deassembling device for core coil structure of transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a load when a yoke of a core is removed from the core coil structure of a transformer and furthermore keep original shapes of a yoke piece and a pole piece. SOLUTION: In the core coil structure of a transformer, a core 10 with a pole 13 arranged in parallel at right and left is formed between yokes 11, 11. A vertical pole piece 22 and a lateral yoke piece 21 are arranged and are put together back and forth by changing the arrangement thereof, and edge faces of the pole piece and the yoke piece are integrated mutually by lamination and face up and down each other, upper and lower yokes of the core are held by a holding plate 12 from back and forth, each pole 13 is enclosed with a coil 14 and a space S is formed between adjacent coils. In a deassembling method of the core coil structure, after the holding plate 12 holding an upper yoke is removed, the upper yoke is separated by applying an upward force to the entire range of the thickness of the upper yoke from a space between adjacent coils while holding a lower yoke.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of extracting PCB (insulating oil) from a used non-combustible transformer and disassembling the core coil structure extracted from the case, and an apparatus used for the method.

[0002]

2. Description of the Related Art A used non-combustible transformer has an iron core coil structure soaked in a PCB inside the case. Therefore, even after the PCB is taken out of the case and the inside of the case is washed, The PCB is attached to the coil structure. The iron core coil structure is mainly composed of an iron core and a coil. The iron core is made of laminated steel plates in which yoke pieces and pole pieces are arranged side by side. It is difficult to remove the PCB that has penetrated between the steel plates with the laminated structure. Separate the yoke pieces and pole pieces from each other before cleaning. Is desired. In addition, since the coil paper is impregnated with PCB, the PCB cannot be removed by normal cleaning work. At this time, the PCB is sucked into a vacuum heating furnace and sucked with a suction device connected to the vacuum heating furnace. Only then can the PCB be removed. PCB like this
Is different, and it is desirable that the vacuum heating furnace is as small as possible from the viewpoint of equipment cost, etc.
It is desirable to separate the iron core coil structure into an iron core and a coil so that they can be handled separately.

In order to separate the iron core coil structure into the iron core and the coil, it is necessary to remove the yoke of the iron core so that the coil can be pulled out from the tip of the pole of the iron core. Therefore, when the yoke of the cleaned iron core coil structure is cut with gas or the like, the PCB is oxidized by heat to become dioxin, and thus the method of cutting the yoke by push cutting has been conventionally used.

However, the press-cutting requires a large press load, which shortens the life of the blade and, moreover,
There is a drawback that the equipment cost and running cost are also high. Further, since the iron core uses the laminated steel plate in which the yoke pieces and the pole pieces are arranged side by side as described above, when they are pressed and cut, the yoke pieces and the pole pieces become smaller than the original size, and then the PCB is removed. The handling for removal is troublesome.

[0005]

SUMMARY OF THE INVENTION The present invention was developed in consideration of the above circumstances, and an object thereof is to reduce the load when removing the yoke and to facilitate the work of removing the PCB in the subsequent process. To maintain the original shape of the yoke piece and the pole piece.

[0006]

According to the iron core coil structure of a transformer used in the present invention, a vertically oriented pole piece and a horizontally oriented yoke piece are arranged, and the arrangement of the pole pieces is changed so that the pole pieces and the yoke are stacked in front and back. The ends of one piece are integrated by stacking, and an iron core with poles arranged side by side is formed between the yokes that face each other vertically.The upper and lower yokes of the iron core are sandwiched by sandwiching plates from the front and back, and each pole is surrounded by a coil. , Has a gap between adjacent coils.

Further, the laminated structure of the iron core will be described in detail in the embodiment of the invention. The 90 ° joint type in which the pole piece and the yoke piece meet at 90 ° and the 4 ° structure at 45 °.
There are three types, a 5 ° joint type and a different width type in which the vertical width of the yoke piece is different.

The inventions of claims 1 to 4 relate to a method for disassembling an iron core coil assembly of a transformer, and the inventions of claims 5 to 8 relate to an apparatus for disassembling an iron core coil assembly of a transformer.

According to the first aspect of the present invention, after the front and rear sandwiching plates sandwiching the upper yoke are removed, the lower yoke is held and the entire width of the thickness of the upper yoke is maintained from the gap between the adjacent coils. It is characterized in that the upper yoke is separated by applying an upward force. When holding the lower yoke, the holding plates sandwiching the lower yoke may be left attached or removed.

There are various ways of holding the lower yoke, and they are roughly classified into a method of directly holding the lower yoke and a method of indirectly holding the lower yoke. For example, a method of directly holding the lower yoke by utilizing a gap between adjacent coils, a method of indirectly holding the lower yoke by holding another component such as a sandwiching plate, and the like. The vertical direction here is a concept including not only the direction in which the iron core coil structure is erected vertically to the ground, but also the direction in which the iron core coil structure is laid horizontally.

The holding plates before and after holding the upper yoke are removed in order to release the holding force and to easily pull out the yoke. Also, when the yoke is separated, the remaining iron core coil structure has a coil attached to the pole, but the coil can be separated simply by pulling out the coil along the extension direction of the pole from which the yoke is removed. .

Further, although the invention of claim 1 described above can be used for all types of iron cores, if it is used for the 45 ° joint type and different width type iron cores, the upward force is almost evenly distributed to the left and right of each yoke piece. Because of this, all the yoke pieces can be separated at once in a single yoke. However, 90 °
When used for a joint type iron core, the force is biased to the left side or right side of each yoke piece, and although one side of the yoke piece may come off, the other side may be sandwiched between poles, In this case, it is necessary to apply a pulling force separately when separating.

The invention of claim 2 can also be used for all types of iron cores, but it is suitable to be used for 45 ° joint type and different width type iron cores, and the front and rear clamping plates sandwiching the upper yoke are used. After the removal, the yoke pieces are separated by applying an upward force to a part of the thickness width of the upper yoke from the gap between the adjacent coils while holding the lower yoke.

The present invention according to claim 3 is suitable for use in all types of iron cores. By applying a force to the left side coil to the left side and a right side coil to the right side, the coil is applied to the coil. Characterized by separating the enclosed poles.

In the case where the integration of the pole piece and the yoke piece by lamination is strong, the method of the inventions according to claims 1 to 3
In some cases, it may be difficult to separate the poles and yokes. In such a case, in order to weaken the integration, it is possible to turn the end face of the corner portion of the iron core before separating as in the invention of claim 4. desirable.

The invention of claim 5 is used for all types of iron cores, and has extraction means for reciprocating left and right on the left and right of the frame, and an openable and closable clamp for gripping the coil is provided at the inner tip of each extraction means. To prepare for.

The invention of claim 6 is suitable for use in the 45 ° joint type and different width type iron cores, and has a pedestal for mounting the iron core coil structure on the lower side of the frame and provided for the pedestal. A restraint means restrains the lower yoke upwardly so that it cannot move, a support beam is provided above the iron core coil structure on the upper side of the frame, and the support beam is provided with a pulling means that reciprocates up and down and is adjacent to each other. It is characterized in that a hooking tool for hooking the entire width of the thickness of the upper yoke from the gap of the coil is provided at the tip of the extracting means. Before raising the hooking tool hooked on the upper yoke by the pulling-out means to pull out the upper yoke, the holding plates before and after the upper yoke is sandwiched are previously removed.

The shape of the pedestal is not particularly limited, and examples thereof include a beam shape and a plate shape. There are various structures for the restraint means, for example, a plurality of plates are integrated by pin bonding to hold the lower yoke together with the beam-shaped pedestal, or a bolt is projected from the plate-shaped pedestal to the side of the holding plate. , A stopper plate pushed through a bolt is pushed downward by a nut, and an end portion of the stopper plate presses a holding plate against a pedestal.

According to a seventh aspect of the present invention, instead of the hooking tool hooked over the entire thickness width of the upper yoke from the gap between the adjacent coils, a scraping tool hooking a part of the thickness width of the upper yoke through the gap between the adjacent coils is used. It is characterized by

The invention of claim 8 is characterized in that a turning gear for turning the end face of the corner portion of the iron core is provided rotatably to the left and right of the frame.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 and 2, a transformer 1 has an insulating oil stored in the case 3 by welding a bottom outer periphery of a case 3 having a bottomed cylindrical shape onto a framed bed 2. PCB 4
The core coil structure 5 is dipped in, the lid 6 is fixed to the flange 7 of the case 3 by welding or bolt nuts, and the core coil structure 5 is positioned and fixed to the cover 6 with the hanging bolts 8.
A cooler 9 for cooling the cooling unit 4 is provided outside the case 3.

As an example of how to take out the iron core coil structure 5 from the transformer 1, first, the PCB 4 is extracted, the cleaning liquid is filled in the case 3, and the cleaning liquid is extracted to reduce the PCB concentration of the iron core coil structure 5. After that, the bolts / nuts are removed, or the welded portion between the lid 6 and the flange 7 is cut and cut to remove the lid 6. Then, the iron core coil structure 5 with the lid 6 is pulled up and taken out from the case 3, and the hanging bolt 8 is removed to obtain the iron core coil structure 5.

As shown in FIG. 3 to FIG. 6, the iron core coil structure 5 includes a yoke 11 which is opposed to the upper and lower sides of an iron core 10 made of laminated steel plates, which is sandwiched by a sandwiching plate 12 having a U-shaped cross section from the front and rear and is tightened with bolts and nuts. The poles 13 which are fixed and arranged in parallel on the left and right of the iron core 10 are surrounded by a cylindrical coil 14,
A gap S is provided between adjacent coils. Paul 13
The brace ring 15 and the coil receiving tree 16 are passed above and below the coil 14, and the upper and lower holding plates 12 are connected to the connecting bolt 1
Tighten with 7 and coil 1 between both clamping plates 12, 12.
4 is positioned. Further, the iron core 10 is placed on the mounting table 18, and the mounting table 18 and the lower sandwiching plate 12 are fixed via a connecting plate 19. Note that reference numeral 20
Is a coil holding bolt.

The iron core 10 is, as shown in FIGS. 7 to 11,
A yoke 1 which is a laminated steel plate and is vertically opposed as a whole
The pole 13 is arranged in parallel between 1 and 11,
For two phases according to the number of poles 13 (Fig. 10, Fig. 11)
There are three phases (Figs. 7 to 9). In addition, the laminated structure is such that a horizontally oriented yoke piece 21 and a vertically oriented pole piece 22 are aligned in a manner that a square hole is opened inside to form a "mouth" -shaped or "day" -shaped unit plate 23, (A) of each figure
As shown in (b) and (b), the unit plates 23 in which the yoke pieces 21 and the pole pieces 22 are arranged side by side are overlapped with each other, and the ends of the yoke pieces 21 are sandwiched between the ends of the overlapped pole pieces 22. On the other hand, the structure is such that the ends of the pole pieces 22 are joined in such a manner that they are sandwiched between the ends of the front and rear yoke pieces 21 and the central edge.
In addition, there is also one in which the front and rear surfaces of the yoke piece 21 and the pole piece 22 are coated with varnish and hardened.

The above laminated structure of the iron core is mainly classified into three types. 7 (a) (b) and FIG. 10 (a)
In (b), the yoke piece 21 and the pole piece 22 are 9
The unit plate 23 is formed by using three or two long and narrow rectangular yoke pieces 21 and pole pieces 22 of a 90 ° joint type that abut at 0 °. Moreover, FIG.
(B) and FIG. 11 (a) and (b) show a 45 ° joint type in which a pole piece and a yoke piece abut at 45 °, and two yoke pieces 21 and three or two pole pieces. Two
2 is used, and the abutting side of each piece is inclined at 45 °. Further, the ones shown in FIGS. 9A and 9B are of different width type, two yoke pieces 21 and two pole pieces 22 are used, and the yoke pieces 21 having different vertical widths are used.

As shown in FIGS. 12 to 15, the first embodiment of the iron core coil assembly disassembling apparatus has a beam 25 as a pedestal in the lower portion of the frame 24, and a beam 25 for the pedestal.
The iron core coil structure 5 is placed on the top of the sleeper, and the clamp 26 that sandwiches the lower yoke 11 from the front and back is attached to the pedestal beam 2
5 are arranged so as to face each other. Also, the frame 24
A support beam 27 is provided on the upper part of the parallel to the pedestal beam 25, and the upper yoke 11 is provided along the support beam 27.
And a plate-shaped restraining means 29 for restraining the lower yoke 11 so as not to move upward.
Is detachably attached to the pedestal beam 25, and a turning means 30 for wrapping the end face of the corner portion of the iron core 10 is movably provided along the pedestal beam 25. 12 and 13, the turning means 30 is provided only on the left side and not on the right side, but the turning means 30 on the right side is omitted for convenience.

A cylinder is used as the clamp 26, and a holding plate is attached to the tip of the piston rod.

The pulling-out means 28 has a slider 31 which moves along the support beam 27, a cylinder 32 is hung on the slider 31, and a plate-like hooking tool 34 is attached to the tip of the piston rod 33 via a chain. It's hanging.

The hook 34 is formed by pin-joining a plurality of plates partially overlapped with each other to form a quadrangle, and the overall width of the hook is equal to or smaller than the gap S between adjacent coils. The upper side of the lower plate is the upper yoke 11.
It is desirable to match the cross-sectional shape of the upper yoke, and when the cross-sectional shape of the upper yoke is quadrangular, it is made horizontal, and when the cross-sectional shape is circular, it is made circular arc. In this way, in the yoke 11 having the laminated structure, the upper side of the lower plate of the hooking tool 34 contacts the entire thickness width of the lower side facing the gap S, and each yoke piece 21 is plastically deformed. Absent. If a wire or a chain is used instead of the hook 34, the yoke piece 21 may be plastically deformed in the stacking direction. In that case, the joining force between the pole piece 22 and the yoke piece 21 increases and the yoke 11
Is difficult to pull out from the pole 13.

Similarly to the hook 34, the restraining means 29 is pin-joined with a plurality of plates partially superposed,
The lower yoke 11 is assembled into a shape that holds the lower beam 11 together with the H-shaped pedestal beam 25.

The turning means 30 has a slider 35 which moves along the pedestal beam 25, a cylinder 36 is fixed vertically on the slider 35, and a tip portion of a piston rod 38 which moves up and down along a guide 37. The turning gear 39 is rotatably supported about the vertical axis as a central axis through a plate, and the turning gear 39 is rotated by a motor. When the end face of the upper corner portion of the iron core 10 is turned by the turning gear 39, the piston rod 38 is moved upward to adjust the height, and while the turning gear 39 is rotated, the piston rod 38 itself is centered in the vertical direction. The turning gear 39 is swung in the stacking direction of the iron core 10 about the piston rod 38.

When the iron core coil structure 5 is disassembled, first, the connecting bolt 17 is removed or the cutting speed is lowered to a temperature at which the PCB does not oxidize, so that the connecting bolt 17 is within the range between the upper and lower yokes 11, 11. Cut and adjacent coil 1
The gap S of 4, 14 is opened back and forth. The position of the connecting bolt 17 is indicated by a cross mark in FIG. 6, and is before and after the gap S between the adjacent coils 14, 14. Next, the coil pressing bolt 20, the upper and lower holding plates 12, the mounting table 18,
After removing the connecting plate 19, the iron core coil structure 5 is placed upright on the pedestal beam 25. Then, the lower yoke 11 is clamped and held from the front and rear by the clamp 26, the restraining means 29 and the hooking tool 34 are respectively inserted from the gaps S between the adjacent coils, and the lower yoke 11 is restrained by the restraining means 29, and the upper yoke. The hooking tool 34 is hooked on 11. Then, the piston rod 33 of the extracting means 28 is raised to remove the upper yoke 11.

In the second embodiment of the disassembling apparatus for the iron core coil structure, as shown in FIG. 16, the iron core coil structure 5 is laid down on a plate-like pedestal 25 which is the bottom of the frame 24, and is placed on the left and right of the frame 24. A turning gear 39 is provided so as to be able to move up and down along both standing columns 40.

As shown in FIGS. 17 to 20, the third embodiment of the iron core coil disassembling apparatus is a plate-like scraping device that hooks on a part of the thickness of the lower side of the upper yoke 11 instead of the hooking tool 34. It is characterized by using the dispensing tool 41,
The restraint means 29 is used to hold the lower yoke 11 of the iron core coil structure 5, as in the first embodiment.

In the mounting structure of the scraping tool 41, the cylinders 42 of the extracting means 28 are erected on the front, rear, left and right sides of the frame 24, and the top plate 44 is horizontally supported on the tip portions of the piston rods 43 that move in and out from the four cylinders 42. The core coil structure 5 is arranged directly below the top plate 44. Nuts 45 are attached to the front, rear, left and right of the bottom surface of the top plate, a shaft 46 is screwed between the left and right (in the figure, depth direction) nuts 45, 45, and a supporting frame 47 is hung at a predetermined position of the shaft 46 to support the supporting frame. A lateral plate-shaped scraping tool 41 is slidably inserted in the front and back, and a gear 48 meshing with a part of the scraping tool is rotated to move the scraping tool 41 forward and backward. Therefore, when the shaft 46 is rotated by the motor, the scraping tool 41 moves to the left and right together with the shaft 46, and the scraping tool 41 can be aligned in front of or behind the gap S between the adjacent coils. Also, in that state,
As shown in FIG. 8, lower the scraping tool 41 together with the top plate 44,
As shown in FIG. 19, the scraping tool 41 is advanced toward the upper yoke 11, and abutted against a part of the lower side of the upper yoke, and as shown in FIG. , Some of the yoke pieces 21 forming the lower yoke 11 are removed.

In the third embodiment, the yoke pieces 21 are simultaneously scraped out from the front and rear surfaces of the iron core coil structure 5 to be removed, but the yoke pieces 21 may be scraped out from only one surface. Further, the iron core coil structure 5 is placed upright on the pedestal 25, and the raking tool 41 is moved up and down. However, the iron core coil structure 5 is laid horizontally on the pedestal 25 and reciprocated while keeping the raking tool 41 horizontal. It may be a structure that allows it.

The fourth embodiment of the iron core coil assembly disassembling apparatus is one in which the coil 14 is pulled out from the iron core coil assembly 5 from which the upper yoke 11 is removed. As shown in FIGS. The cylinder 49 is placed on the frame, the piston rod 50 is moved up and down above the iron core coil structure 5 from which the upper yoke is removed, and the inverted U-shaped support plate 51 is fixed to the tip of the piston rod 50. On both ends,
A horizontally supported clamp 52 is connected by a pinion 53 so that it can be moved forward and backward. The clamp has a structure in which a pressing plate is attached to the front end of the rack R. Figure 21
22, the piston rod 50 is lowered until the clamp 52 reaches the side of the coil 14 from the state where the piston rod 50 is raised, and the clamp 52 is advanced inward as shown in FIG. Then, the coil 14 is grasped. Then, as shown in FIG. 24, the piston rod 50
Is pulled up and the coil 14 is pulled out from the pole 13.

The restraint means 29 in the fourth embodiment uses a structure different from that of the first embodiment by utilizing the structure of the iron core coil structure 5. That is, by utilizing the fact that the iron core coil structure 5 has the structure in which the sandwiching plate 12 is attached to the front and rear of the lower yoke 11, the bolt is projected upward from the plate-shaped pedestal 25, and the stopper plate T is attached to the bolt. The clamping plate 12 is pressed against the pedestal 25 at the end portion of the stopper plate T by threading the nut through. Reference symbol P is a spacer for height adjustment.

In the fifth embodiment of the disassembling apparatus for the iron core coil structure 5, as shown in FIGS. 25 to 30, between the left and right columns 54, 54 of the frame 24 is a rotatable holding case 55 which is open at the top and bottom. The iron core coil structure 5 that is supported and hung from above is lowered and moved from the upper opening of the holding case 55 to the inside. On the left and right inside the holding case 55, there are extraction means 56 that reciprocate left and right, and the extraction means 5
28 has an openable / closable clamp 57 at the inner tip of FIG.
As shown in FIG. 5, the left and right coils 14, 14 of the iron core coil structure 5 are grasped and held by both clamps 57, 57. Also,
Clamps 58 for sandwiching the intermediate coil 14 from the front and rear are provided in front and rear of the holding case 55.

In the pulling-out means 56, a rotary shaft projecting to the left and right of the holding case 55 is formed by a cylinder 59, and
Is supported by a column 54, a piston rod 60 is provided inside the holding case 55 so as to be capable of reciprocating left and right, and a clamp 57 is provided at the tip of the piston rod 60.

As shown in FIG. 27, the left and right clamps 57 have an opening / closing cylinder 61 at the front end of the piston rod 54, and a pair of piston rods 62 are provided so as to be reciprocable back and forth from the front and rear of the opening / closing cylinder 61. , Piston rod 6
A claw 63 for gripping the coil is projected inward at the tip of the claw 2. The tip of the claw 63 is bent in a dogleg shape so that the coil can be easily gripped.

A cylinder 58 is used as the intermediate clamp 58, and a holding plate is attached to the tip of the piston rod.

From the state where all the coils are gripped by the left and right and middle clamps, the upper and lower holding plates 12 and 12 of the iron core coil assembly 5 and the mounting table 18 are removed to form only the iron core 10 and the coil 14. As shown in FIG. 28, the holding case is rotated by 90 degrees so that the iron core coil structure 5 is laid down, and as shown in FIG. 29, the left side clamp 57 is moved to the left side and the right side clamp 57 is moved to the right side by the extracting means 56. Then, the left and right poles 13 are removed together with the coil 14. The holding case 55 is again rotated 90 degrees to weaken the gripping force of the left and right clamps 57, and the left and right poles 13 are dropped together with the coils 14 in the basket placed under the frame 24. Since the remaining iron core coil structure 5 is gripped by the two intermediate clamps 58, 58, the holding case 55 is rotated 90 degrees again, and the loops 64 are wound around the left and right of the upper and lower yokes 11, respectively. When the upper and lower yokes 11 are pulled simultaneously, the upper and lower yokes 11 are released. Although the procedure after this is not shown in the drawing, the holding case 55 is further rotated 90 degrees to weaken the gripping force of the intermediate clamps 58, 58, and the intermediate pole 1 is removed.
Drop 3 together with coil 14 in the basket.

[0044]

According to the first and third aspects of the present invention, the iron core has a structure in which the ends of the pole piece and the yoke piece are integrated by laminating, so that the superposed surfaces can slide. Since the yoke or the coil is pulled vertically or horizontally, the upper yoke or the pole with the coil can be separated with a small load, and the yoke piece and the pole piece retain their original shapes. As a result, the separated yoke and pole with coil are attached to the yoke piece,
It also becomes easy to separate into pole pieces and coils. Also,
In the invention of claim 1, the fact that there is a gap between the coils is also skillfully used to apply the upward force to the upper yoke.

According to the second aspect of the invention, since the force is applied to a part of the thickness width of the upper yoke, the yoke piece can be separated from the iron core coil structure with a small load.

According to the fourth aspect of the present invention, if the end face of the corner portion of the iron core is turned, the integration of the pole piece and the yoke piece by lamination becomes weak, so that the yoke and the pole are easily separated.

According to the fifth aspect of the present invention, since the clamp holding the coil is moved by the extracting means, the pole with the coil can be separated.

According to the sixth aspect of the invention, the lower yoke is restrained by the restraining means, the hooking tool is hooked over the entire thickness width of the upper yoke, and is pulled out by the pulling means, so that the upper yoke can be separated.

According to the seventh aspect of the present invention, some of the upper yoke pieces can be separated by the scraping tool.

According to the eighth aspect of the present invention, when the end face of the corner portion of the iron core is turned by the turning gear, the integration of the pole piece and the yoke piece by lamination is weakened, so that the yoke and the pole are easily separated.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the internal structure of a transformer viewed from the front side.

FIG. 2 is a vertical cross-sectional view showing the internal structure of the transformer seen from the side surface.

FIG. 3 is a plan view of the iron core coil structure taken out from the transformer.

FIG. 4 is a front view of FIG.

FIG. 5 is a side view of FIG.

6 is a cross-sectional view taken along the line AA of FIG.

7 (a) and (b) are front views showing a laminated structure of a three-phase iron core.

FIG. 8 (a) is a front view showing another example of the laminated structure of the three-phase iron core.

FIG. 9 is a front view showing another example of the laminated structure of the iron cores for (a) and (b) three phases.

10 (a) and (b) are front views showing a laminated structure of a two-phase iron core.

11 (a) and (b) are front views showing another example of a laminated structure of a two-phase iron core.

FIG. 12 is a front view showing the first embodiment of the disassembling apparatus for the iron core coil structure of the transformer.

FIG. 13 is a front view showing a state in which an upper yoke is removed in the first embodiment.

FIG. 14 is a sectional view of the first embodiment showing a state in which the hooking tool is hooked on the upper yoke and the lower yoke is restrained by the restraining means.

FIG. 15 is a main-portion cross-sectional view of the first embodiment showing a state where the lower yoke is clamped.

FIG. 16 is a front view showing a second embodiment of the disassembling device for the iron core coil structure of the transformer.

FIG. 17 is a front view showing a third embodiment of a disassembling device for an iron core coil structure of a transformer.

FIG. 18 is a front view showing a state where the top plate is lowered in the third embodiment.

FIG. 19 is a front view showing a state where the tip of the scraping tool is hooked on a part of the upper yoke in the third embodiment.

FIG. 20 is a front view showing a state where the yoke piece is scraped by the tip of the scraping tool in the third embodiment.

FIG. 21 is a front view showing a fourth embodiment of the disassembling apparatus for the iron core coil structure of the transformer.

FIG. 22 is a front view showing a state in which the clamp is lowered beside the coil in the fourth embodiment.

FIG. 23 is a front view showing a state where a coil is held by a clamp in the fourth embodiment.

FIG. 24 is a front view showing a state in which a coil is pulled out in the fourth embodiment.

FIG. 25 is a front view showing a fifth embodiment of the disassembling device for the iron core coil structure of the transformer.

FIG. 26 is a front view showing a state where an iron core coil structure is put into the holding case of the fifth embodiment.

FIG. 27 is a plan view showing a state immediately before gripping a coil in the fifth embodiment.

FIG. 28 is a plan view showing a state immediately before the coil is pulled out in the fifth embodiment.

FIG. 29 is a plan view showing a state in which the left and right coils are pulled out together with the poles in the fifth embodiment.

FIG. 30 is a front view showing a state immediately before the yoke is pulled out in the fifth embodiment.

[Explanation of symbols]

5 Iron core coil structure 10 iron core 11 York 12 clamping plate 13 poles 14 coils S gap 21 yoke pieces 22 pole pieces 24 frames 25 pedestal (beam for pedestal) 27 Support beam 28,56 Extraction means 29 restraint means 34 Hook 39 Turning gear 41 Scraping tool 57 clamp

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Isao Onodera             233 Hohanaji Temple, Namerikawa City, Toyama Prefecture Made by Hokuriku Electric             Zou Corporation

Claims (8)

[Claims] 1. A vertically oriented pole piece (22) and a horizontally oriented yoke piece (21) are arranged side by side, and the arrangement manners thereof are changed to be stacked in front and back, and the end portions of the pole piece and the yoke piece are integrated by lamination. The yokes (11, 1) facing each other vertically
Iron core (10) with poles (13) in parallel between 1)
Is formed, and the upper and lower yokes (11) of the iron core are sandwiched by the sandwiching plates (12) from the front and the back, respectively.
3) is surrounded by a coil (14) and adjacent coils (1
In the method of disassembling the iron core coil structure of a transformer having a gap (S) between the front and rear clamping plates (1), the upper yoke (11) is sandwiched.
After removing 2), while holding the lower yoke (11), the upper yoke (1) is removed from the gap (S) between the adjacent coils.
1) A method for disassembling an iron core coil structure of a transformer, characterized in that an upper yoke (11) is separated by applying an upward force to the entire thickness width. 2. A vertically oriented pole piece (22) and a horizontally oriented yoke piece (21) are arranged side by side, and the arrangement manners thereof are changed to be stacked in front and back, and the end portions of the pole piece and the yoke piece are integrated by lamination. The yokes (11, 1) facing each other vertically
Iron core (10) with poles (13) in parallel between 1)
Is formed, and the upper and lower yokes (11) of the iron core are sandwiched by the sandwiching plates (12) from the front and the back, respectively.
3) is surrounded by a coil (14) and adjacent coils (1
In the method of disassembling the iron core coil structure of a transformer having a gap (S) between the front and rear clamping plates (1), the upper yoke (11) is sandwiched.
After removing 2), while holding the lower yoke (11), the upper yoke (1) is removed from the gap (S) between the adjacent coils.
1) A method for disassembling an iron core coil structure of a transformer, characterized in that a yoke piece (21) is separated by applying an upward force to a part of the thickness width of 1). 3. A vertical pole piece (22) and a horizontal yoke piece (21) are arranged side by side, and the arrangement direction is changed to be stacked in front and back, and the end portions of the pole piece and the yoke piece are integrated by lamination. The yokes (11, 1) facing each other vertically
Iron core (10) with poles (13) in parallel between 1)
Is formed, and the upper and lower yokes (11) of the iron core are sandwiched by the sandwiching plates (12) from the front and the back, respectively.
3) is surrounded by a coil (14) and adjacent coils (1
In the method of disassembling the iron core coil structure of a transformer having a gap (S) between the left and right coils (14), a force is applied to the left coil (14) on the left side and the right coil (14) to the right side. A method for disassembling an iron core coil structure of a transformer, characterized in that a pole (13) surrounded by a coil (14) is separated by adding. 4. The method for disassembling an iron core coil structure of a transformer according to claim 1, 2 or 3, wherein the end faces of the corner portions of the iron core (10) are turned before separation. For disassembling the iron core coil structure of the above. 5. A vertical pole piece (22) and a horizontal yoke piece (21) are arranged side by side, and the arrangement direction is changed to be stacked in front and back, and the end portions of the pole piece and the yoke piece are integrated by lamination. The yokes (11, 1) facing each other vertically
Iron core (10) with poles (13) in parallel between 1)
Is formed, and the upper and lower yokes (11) of the iron core are sandwiched by the sandwiching plates (12) from the front and the back, respectively.
3) is surrounded by a coil (14) and adjacent coils (1
In a disassembling device for a transformer core coil structure having a gap (S) between the frames (14, 4), a pulling means (56) reciprocating left and right is provided with a frame (24).
An apparatus for disassembling an iron core coil structure of a transformer, comprising clamps (57) which are provided on the left and right sides of and which can be opened and closed to grip a coil (14) at an inner tip of each extraction means (56). 6. A vertical pole piece (22) and a horizontal yoke piece (21) are arranged side by side, and the arrangement direction is changed to be stacked in front and back, and the end portions of the pole piece and the yoke piece are integrated by lamination. The yokes (11, 1) facing each other vertically
Iron core (10) with poles (13) in parallel between 1)
Is formed, and the upper and lower yokes (11) of the iron core are sandwiched by the sandwiching plates (12) from the front and the back, respectively.
3) is surrounded by a coil (14) and adjacent coils (1
In a disassembling device for a transformer core coil structure having a gap (S) between the core core structure (4) and (14), a pedestal (25) for mounting the core coil structure (5) is provided below the frame (24) and A restraining means (29) provided in (25) restrains the lower yoke (11) so as not to move upward, and a support beam (27) above the iron core coil structure (5) above the frame (24). And a support beam (27) having reciprocating up and down means (28)
And a hooking tool (34) for hooking the entire width of the thickness of the upper yoke (11) from the gap (S) between the adjacent coils at the front end of the extracting means (28). Dismantling device for components. 7. The disassembling apparatus for an iron core coil structure of a transformer according to claim 6, wherein instead of the hooking device (34) hooked over the entire thickness width of the upper yoke (11) from the gap (S) between adjacent coils. A disassembling device for an iron core coil structure of a transformer, comprising a scraping tool (41) hooked on a part of a thickness width of an upper yoke (11) from a gap (S) between adjacent coils. 8. The turning gear (39) for turning an end surface of a corner portion of the iron core (10) is rotatably provided to the left and right of the frame (24). Disassembling device for transformer core coil structure.