JPH10199740A - Assembling device of transformer and method of assembling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of assembling a transformer on site even when the site has a relatively low ceiling. SOLUTION: An E-shaped core 18 with its legs 14 connected to a lower yoke is placed on a floor F. A gate shaped frame 23 is placed astride the E- shaped core 18, a pulley 24 is provided to the horizontal beam 23b, and a take-up machine 26 is provided to a vertical fulcrum 23a. The coil 13 is supported by two coil supporter 19 and fixed by a fixing band 20. The coil supporter 19 is connected to a suspension 21. A wire 25 from the machine 26 is hung on the pulley 24 and connected to the suspension 21. The coil 13 is once hoisted, then lowered and fitted to the legs 14. To prevent a bump between the suspension 21 and the upper ends of the legs 14, an opening 27 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transformer assembling apparatus and method suitable for assembling a large-capacity transformer on site.

[0002]

In recent years, for example, a transformer installed in an electric room of a building or the like has been increasingly replaced with a new one due to aging or an increase in capacity. However, in existing buildings, there are restrictions on the size, especially the height, of the materials to be carried in the carry-in passage, and the weight of elevators.Therefore, large-capacity transformers can be carried in as they are assembled at the factory. It can be difficult.

[0003] Therefore, the transformer is transported to the site in a disassembled state, and is locally assembled in or near the electric room. FIG. 16 and FIG. 17 show how such a transformer is assembled on-site. The transformer includes, for example, three leg portions 1 and upper and lower yoke portions (shown in FIG. ), And a coil 2 inserted into each of the leg portions 1. in this case,
The transformer is carried in a state where it is disassembled into, for example, an iron core in a form in which three leg portions 1 are connected in a so-called E-shape to a lower yoke portion, an upper yoke portion, and each coil 2.

In assembling a transformer, first, an iron core from which an upper yoke has been removed is fixedly mounted on a floor F of an electric room, for example, by a fixture 3. Next, FIG.
As shown in FIG. 17, the coil 2 is lifted above the leg 1 using the lifting device 4, and then the coil 2 is lowered and fitted into the leg 1 as shown in FIG.
Finally, the upper yoke is connected to the upper end of the leg 1.

At this time, the lifting device 4 for raising and lowering the coil 2 is configured as follows. That is, the coil 2 is tightened by the tightening bands 6 at two upper and lower positions in a state where the L-shaped jig 5 is located on the lower end surface and the outer peripheral surface of the coil 2 on the left and right sides, so that these two L
It is supported by the shape jig 5. The upper ends of the two L-shaped jigs 5 are connected to the hanging jig 8 via the wires 7.

On the other hand, a gate-shaped frame 9 is installed on the floor F of the electric room so as to straddle the installation portion of the iron core, and a chain block 10 is mounted on the upper portion of the frame 9.
Then, the hook portion 10a of the chain block 10
Is connected to the hanging jig 8. Thus, the coil 2 can be lifted and lowered by operating the chain block 10 by the operator.

By the way, in order to insert the coil 2 into the leg portion 1 as described above, the coil 2 is moved from the floor F to a dimension A.
However, in order to perform the lifting operation by the above-described lifting / lowering device 4, a height B is further required by the frame 9, and the frame 9 having a height C as a whole is required. Required.

However, the above-described conventional lifting device 4
In the case where the coil 2 is used, the dimension B1 required for setting the chain block 10 becomes relatively large. In addition, as shown in FIG. It becomes necessary to form a gap having a relatively large dimension D by using the wire 7 from the upper end to the upper end of the hanging jig 8, and the dimension B2 also increases.

As a result, the dimension B (= B1 + B2) becomes large, and as a result, there is a problem that the assembling work becomes impossible unless the room has a high ceiling. To give a concrete example, 2
In the case of a 2 kV-class 2000 kVA mold transformer, the height A was 2750 mm, the dimension B1 was 700 mm, the dimension B2 was 700 mm (the dimension D was 450 mm), and the height C of the frame 9 was required to be 4350 mm.

[0010] The present invention has been made in view of the above circumstances, and an object of the present invention is to transport a transformer in a disassembled state and assemble it on site. An object of the present invention is to provide an assembling apparatus and an assembling method of a transformer capable of performing an assembling operation.

[0011]

According to a first aspect of the present invention, there is provided an apparatus for assembling a transformer, comprising: an iron core having upper and lower ends connected to a plurality of legs by upper and lower yokes; When assembling a transformer having a coil to be inserted into a leg portion, an apparatus for fitting the coil from above to each of the leg portions of the iron core with the upper yoke portion removed, L supporting the lower end surface and the outer peripheral surface of the coil
A plurality of coil supporting jigs having a U-shaped support portion, a suspending jig in which the upper end of each coil supporting jig is connected in a suspended state, and raising and lowering the suspending jig In addition to the lifting means, the hanging jig is characterized by having an opening for avoiding interference with the upper end of the leg.

According to this, the coil is supported by a plurality of coil supporting jigs having L-shaped support portions, and the upper ends of the coil supporting jigs are suspended by the suspending jig. Linked to Then, by lifting and lowering the suspension jig by the lifting / lowering means, the coil can be fitted into the leg portion from above. At this time, the hanging jig is configured to have an opening for avoiding interference with the upper end of the leg portion. It is possible to lower to a position lower than the upper end of the portion, and it is not necessary to provide a relatively large gap between the upper end of the coil and the suspension jig.

[0013] In this case, the elevating means includes a gate-shaped frame having a horizontal beam at an upper end portion of the column, which is disposed so as to straddle the installation portion of the iron core; a pulley provided on the horizontal beam of the frame; A winding machine provided on a support of the frame body for winding and sending out the wire, wherein the wire is connected to a hanging jig while being wound around the pulley, and wound by the winding machine. And sending out (the invention of claim 2). According to this, since only a space for installing a pulley is required between the hanging jig and the horizontal beam of the frame body, the height between the suspension jig and the horizontal beam is smaller than when using a chain block. The dimension in the direction can be reduced.

Alternatively, the elevating means may be a straddle-shaped frame having a horizontal beam at an upper end portion of a column, the jig being provided on the horizontal beam of the frame. And a chain block for suspending (the invention of claim 3).
The configuration can be simplified.

At this time, the coil is supported by two coil supporting jigs, the suspending jig is suspended by two chain blocks, and the coil supporting jig in the suspending jig is supported. The connecting position of the tool and the hanging position of the chain block may be configured to have a positional relationship different by 90 degrees (the invention of claim 4). According to this, the hanging jig can be stably hung by the two chain blocks, and the coil is inclined even if a displacement occurs between the two chain blocks at the time of ascent or descent. Can be effectively prevented.

According to a fifth aspect of the present invention, there is provided a transformer assembling apparatus comprising: a plurality of coil supporting jigs each having an L-shaped support portion for supporting a lower end surface and an outer peripheral surface of a coil; A jig for hanging the upper end of the jig is connected in a suspended state, a gate-shaped frame having a horizontal beam at an upper end of a column, which is disposed so as to straddle the installation portion of the iron core, and A pulley provided on the horizontal beam; and a winder that winds and feeds a wire provided on a support of the frame body and connected to the hanging jig while being wound around the pulley. However, it has features. According to this, since only a space for installing a pulley is required between the hanging jig and the horizontal beam of the frame body, the height between the suspension jig and the horizontal beam is smaller than when using a chain block. The dimension in the direction can be reduced.

According to a sixth aspect of the present invention, there is provided a transformer assembling apparatus, comprising:
A plurality of jigs for supporting the coil having an L-shaped support portion for supporting the lower end surface and the outer peripheral surface of the coil, and the upper end of each of the jigs for supporting the coil is arranged so as to straddle the installation portion of the iron core between the struts. A lifting mechanism for lifting the lifting body connected in a suspended state. According to this, the coil can be moved up and down by directly connecting the coil supporting jig to the lifting / lowering body, and the space required above the coil supporting jig can be reduced.

According to a seventh aspect of the present invention, there is provided a transformer assembling apparatus.
It is characterized by comprising a support having an opening for supporting the coil in a mounted state and opening a hollow portion of the coil at the bottom surface, and a lifting device for lifting and lowering the support from the side. According to this, by directly supporting the coil on the support, the coil can be raised and lowered by the lifting device, and the space required above the coil can be reduced.

Further, the method for assembling a transformer according to the present invention is characterized in that an upper and lower ends of a plurality of legs are connected to an upper and lower yoke respectively, and a coil inserted into each of the legs is provided. 8. A method for assembling a transformer comprising: a step of installing an iron core with the upper yoke portion removed, and for each leg portion of the iron core, the method according to any one of claims 1 to 7. The present invention is characterized in that a step of inserting the coil by using a transformer assembling apparatus and a step of attaching an upper yoke section for connecting the respective leg sections are sequentially performed (the invention of claim 8). According to this, since the transformer assembling apparatus according to any one of claims 1 to 7 is used,
The operation of inserting the coil into the iron core can be performed in a place where the ceiling height is relatively low.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS. (1) First Embodiment First, a first embodiment (corresponding to claims 1, 2 and 8) of the present invention will be described with reference to FIGS.

FIG. 5 schematically shows an assembled state of the transformer 11 according to the present embodiment.
Iron core 12 and, for example, three coils (molded coils) 13
It is comprised including. Although not shown in detail, for example, the iron core 12 extends in the up-down direction and, for example, three leg portions 14 (only one is shown) into which the coils 13 are respectively inserted.
Are connected by an upper yoke portion 15 at an upper end thereof and are connected by a lower yoke portion 16 at a lower end thereof. The leg portion 14, the upper yoke portion 15, and the lower yoke portion 16 are formed by laminating steel plates, and are connected to each other by bolting or the like.

The transformer 11 is mounted on, for example, a floor F of an electric room in a building at a lower yoke portion 16 of the iron core 12 via a mounting bracket 17.
At this time, the transformer 11 has, for example, three leg portions 14 in the lower yoke portion 16 in a so-called E-shape, due to circumstances such as the size, particularly the height, of the material to be carried in the carry-in passage of the building, and the weight of the elevator. (Figs. 1 and 2)
(Referred to as E-shaped iron core 18 hereinafter), the upper yoke 15 and each coil 13 are disassembled and carried in and assembled on site.

Now, an assembling apparatus according to this embodiment for assembling the transformer 11 on site will be described with reference to FIGS. This assembling apparatus comprises a plurality of coil supporting jigs 19 in this case, two fastening bands 2
0, a hanging jig 21, an elevating device 22 as elevating means, and the like. In this embodiment, the elevating device 22 includes a gate-shaped frame 23 and two pulleys 24 in this case.
And an electric winder (winch) 26 for winding and sending out the wire 25.

As shown in FIGS. 1 and 2, the coil supporting jig 19 has an L-shape having a horizontal portion for supporting the lower end surface of the coil 13 and a vertical portion for supporting the outer peripheral surface thereof. And a connecting portion 19a. In this embodiment, the left and right sides of the coil 13 are supported by two coil supporting jigs 19 in the drawing.
The lower horizontal portion of the coil supporting jig 19 has a length that does not reach the hollow portion of the coil 13. Further, the tightening band 20 is tightened so as to be wound around the coil 13 from the outside of the coil supporting jig 19 and plays a role of integrating the coil supporting jig 19 with the coil 13 so as not to come off. It has become.

As shown in FIGS. 3 and 4, the suspending jig 21 has a rectangular frame portion 21a and an extension extending laterally from an intermediate portion between the left and right sides of the frame portion 21a. The protruding portion 21b is integrally formed. At this time, the inside of the frame portion 21a is defined as an opening 27, and as shown in FIG. 3, the size of the opening is large enough to allow the leg portion 14 to be inserted. As a result, when the coil 13 is inserted into the leg 14, interference with the upper end of the leg 14 can be avoided.

As shown in FIG. 4 (a), two connecting holes 28 are formed on the left and right extending portions 21b of the suspending jig 21 at upper and lower positions, respectively. With this,
As shown in FIGS. 1 and 2, the connecting jigs 29 are attached between the lower connecting holes 28 and the connecting portions 19 a of the respective coil supporting jigs 19, so that the suspension jig 2 is provided.
1, the two coil supporting jigs 19 are connected in a suspended state. Further, hook portions 25a at the tips of the wires 25 are hooked into the respective upper connection holes 28 via the respective connection rings 30.

On the other hand, as shown in FIGS. 1 and 2, the frame body 23 is formed by combining, for example, an H-shaped steel, and extends right and left upright columns 23a and upper ends of the upright columns 23a. And a horizontal beam 23b extending horizontally. The frame 23 is arranged so as to straddle the E-shaped core 18 installed on the floor F. The two pulleys 24 are attached to the lower surface of the horizontal beam 23b. Further, the respective winders 26 are respectively attached to the lower portions of the left and right columns 23a, and the wires 25 led out from the respective winders 26 are wound around the respective pulleys 24 and then suspended. The jig 21 is connected to the jig 21.

Next, a method of assembling the transformer 11 according to the present embodiment using the above-described assembling apparatus will be described. In assembling the transformer 11, first, as described above,
A step of installing the E-shaped iron core 18 (iron core with the upper yoke portion 15 removed) at a predetermined position on the floor F of the electric room by the mounting bracket 17 is performed. In this case, the E-shaped core 18
Are installed in a direction in which three leg portions 14 are arranged in the front-rear direction. As a result, the upper ends of the legs 14 are in a so-called open form, and the coil 13 can be inserted from above. At the same time, the frame 23 to which the pulley 24 and the winder 26 are attached as described above is
It will be installed so as to straddle the 18-shaped iron core.

Next, each leg portion 14 of the E-shaped iron core 18
The step of inserting the coil 13 is performed as follows. That is, for example, the two coil supporting jigs 19 are sandwiched from the left and right with respect to the coil 13 placed on the floor portion F, and addressed. In this work, the floor F and the lower end surface (bottom surface) of the coil 13 are tilted while the coil 13 is tilted obliquely so that the bottom is slightly lifted.
The horizontal portion of the support portion 19a of the jig 19 for supporting the coil can be inserted between them. Thereafter, on the outer periphery of the coil 13, tightening bands 20 are tightened at two upper and lower positions, and thus two coil supporting jigs 19 are provided.
Are integrated so as not to come off the outer peripheral surface of the coil 13.

Thereafter, the right and left coil supporting jigs 19 are provided.
Is connected to the lower part of the suspending jig 21 by a connecting tool 29 in a suspended state. At the same time, the hook 25 a at the tip of each wire 25 is connected to the upper part of the suspending jig 21 via a connecting ring 30. Connected. At this time, each wire 25 has been sent out from each winding machine 26 for a sufficient length, and the leading end portion is suspended over each pulley 24 after being suspended.

Subsequently, the winding of the wire 25 by both winding machines 26 is performed synchronously. By this winding, the distal end side of the wire 15 is pulled up via the pulley 24, and accordingly, the coil 13 is lifted up via the hanging jig 21 and both coil supporting jigs 19. When the coil 13 is raised to the required height as shown in FIG. 1 (a position where the lower end of the coil 13 is slightly higher than the upper end of the leg portion 14), the winding of the wire 25 is stopped.

Then, from this state, the positioning is performed so that the hollow portion of the coil 13 is located directly above the leg portion 14. This time, the feeding of the wire 25 by the two winders 26 is synchronized. Done. As a result, the suspended coil 13 gradually descends and is inserted into the leg portion 14 as shown in FIG. At this time, as shown in FIG. 2, the hanging jig 21 is lowered to a position lower than the height of the upper end of the leg portion 14.
1 is provided with an opening 27 for avoiding interference, and as shown in FIG.
Thus, the fitting operation can be performed without colliding with 4.

When the insertion of the coil 13 is completed as described above, the fastening band 20 and the coil supporting jig 19 are removed. The above-described operation is repeatedly performed on the three coils 13 sequentially, and all the coils 13 are fitted into the leg portions 14. Thereafter, a process of attaching the upper yoke portion 15 is performed, and thus the transformer 11 is mounted.
Is assembled.

As described above, according to the assembling apparatus of this embodiment, the transformer 11 is carried in a disassembled state and assembled on site, and the suspension jig 2 for suspending the coil 13 is used.
1 is provided with an opening 27 for avoiding interference with the leg 14, so that when the hanging jig 21 is lowered, the hanging jig 21 is lower than the upper end of the leg 14. It is possible to lower the gap between the upper end of the coil 13 and the hanging jig 21 in the height direction (dimension d1 shown in FIG. 1) as compared with the conventional one. .

In this embodiment, the pulley 24 and the winder 2 are replaced with the chain block 10 conventionally used.
6, the coil 13 is raised and lowered, so that a space (dimension e1 shown in FIG. 1) for installing the pulley 24 is required between the hanging jig 21 and the horizontal beam 23b of the frame 23. You can just do it.

As a result, as shown in FIG.
Height b1 from the floor F to the horizontal beam 23b of the frame 23 necessary for lifting the
Can be greatly shortened as compared with the prior art, and the frame 23
Height c1 can be reduced, and as a result, the assembling work can be performed even when the ceiling height of the installation location is relatively low.

By the way, in a specific example of a 22 kV-class 2000 kVA mold transformer, the height dimension a1 is 27
In contrast to 50 mm (equivalent to the dimension A described in the conventional example), the dimension f1 is 350 mm, the dimension e1 is 350 mm, and the total dimension b1 is 700 mm. As a result, the frame 23
Is 3560 mm, and the height can be reduced by 700 mm as compared with the conventional dimension C.

(2) Second and Third Embodiment FIG. 6 shows a second embodiment (corresponding to claim 3) of the present invention. In the following embodiments, the configuration of the transformer 11 and the like are the same as those in the first embodiment, and the same reference numerals are given to the same portions as those in the first embodiment, and a new illustration and detailed description will be given. Is omitted.

This embodiment differs from the first embodiment in the structure of a lifting device 31 serving as lifting means for lifting and lowering the hanging jig 21. That is, the lifting device 31
Is a frame 23 equivalent to that of the first embodiment, and the frame 2
A plurality of horizontal beams 23b, in this case 2
And two chain blocks 32.
The hook 33a at the tip of the chain 33 of the chain block 32 is connected to the hanging jig 21, so that the hanging jig 21 and thus the coil 13 are raised and lowered by the operation of the chain block 32 by the operator. ing.

In this configuration, the hanging jig 21
Since the opening 27 is provided for avoiding interference with the leg 14, the hanging jig 21 is connected to the leg 14 at the time of insertion of the coil 13 similarly to the first embodiment.
Can be lowered to a position lower than the upper end of the coil 13, and a gap in the height direction (dimension d1 and thus dimension f1) between the upper end of the coil 13 and the hanging jig 21 can be reduced. As a result, the assembling work can be performed even when the ceiling height is relatively low. Further, since the chain block 32 is employed in place of the elevating device 22 using the winder 26 and the pulley 24 as in the first embodiment, the configuration can be simplified and the cost can be reduced.

In this case, by using the chain block 32, the dimension e2 becomes larger than the dimension e1 in the first embodiment, but the overall dimension b2
Can be made sufficiently smaller than the conventional one (dimension B) shown in FIG. To give a concrete example,
The dimension e2 is 700 mm, the dimension b2 is 1050 mm, and the overall height dimension c2 of the frame body 23 is 4000 mm, so that the height can be reduced by 350 mm as compared with the conventional dimension C.

FIGS. 7 to 9 show a third embodiment (corresponding to claim 4) of the present invention. In this embodiment, also using two chain blocks 32,
The suspension jig 34 is moved up and down. The two suspension jigs 34 are attached to the horizontal beam 23b of the frame 23.
And can be mounted side by side in the front-rear direction.
Thereby, the connection position of the two coil supporting jigs 19 in the hanging jig 34 and the two chain blocks 3
2 is different from the hanging position by 90 degrees.

At this time, the hanging jig 34 is
As shown in the figure, an annular frame portion 34a and the frame portion 34a
And an extension portion 34b extending laterally from the left and right portions of the frame portion. The inside of the frame portion 34a is an opening 35 having a size large enough to allow the leg portion 14 to be inserted. . The left and right extending portions 34b of the hanging jig 34 include:
A connection hole 36 is formed on the lower side for connecting the coil supporting jig 19, and a connection hole 37 on the front and back of the frame portion 34a is connected on the upper side to the chain block 32. Is formed.

According to this, the structure of the lifting device 22 can be simplified, and the suspension jig 34 can be stably suspended by the two chain blocks 32.
In addition to this, for example, when the coil 13 descends, the amount of descent and the descent speed between the two chain blocks 32 become unbalanced, and the hanging jig 34 may tilt in the front-rear direction. The inclination has almost no effect on the coil 13, and the inclination of the coil 13 can be effectively prevented.

As a result, the work of inserting the coil 13 becomes easier. Although detailed explanation is omitted,
The dimensions of each part are the same as those of the second embodiment, and the assembling work can be performed even when the ceiling height is relatively low.

(3) Fourth to Sixth Embodiment FIG. 10 shows a fourth embodiment (corresponding to claim 5) of the present invention. In this embodiment, as the hanging jig 41, a horizontally long plate-shaped jig similar to that described in the conventional example is adopted, and the coil supporting jig 19 is provided on both left and right ends thereof via wires 42. It is designed to be connected in a suspended state.

The lifting device 43 of the present embodiment comprises a frame 23 and two pulleys 44 and 45 mounted on the center and the right of the horizontal beam 23b of the frame 23, respectively.
And a winder 26 attached to the right support 23a. Wire 25 derived from winder 26
Are suspended in sequence over the two pulleys 45 and 44 and are connected to the center of the hanging jig 41.

In this configuration, a relatively large gap (dimension d2) is required in the height direction between the upper end of the coil 13 and the hanging jig 41, and the dimension f2 is increased. However, similarly to the first embodiment, the hanging jig 41 is used.
Since only the space (dimension e1) for installing the pulley 44 is required between the horizontal beam 23b and the horizontal beam 23b, the dimension b3
Can be reduced, and as a result, the assembling work can be performed even when the ceiling height is relatively low. More specifically, the dimension d2 is 450 mm, the dimension f2 is 700 mm, the dimension b3 is 1050 mm, and the dimension c3 is 4000 mm.

FIG. 11 shows a fifth embodiment (corresponding to claim 6) of the present invention. In this embodiment, the coil 13 supported by the coil supporting jig 19 is directly lifted and lowered by the lifting mechanism 51 without using a hanging jig. That is, the elevating mechanism 51 arranges a pair of columns 52 having elevating claws 52a positioned so as to face inward to each other, on the left and right sides of the E-shaped iron core 18, and extends between the elevating claws 52a left and right. hand,
An elevating body 53 is provided.

Although not shown, the column 52 is provided with a mechanism for raising and lowering the lifting claw 52a by using a motor or the like as a drive source, so that the lifting body 53 can be freely raised and lowered in a horizontal state. It has become. The upper end of each coil supporting jig 19 is connected to the elevating body 53 via a wire 54 in a suspended state.

According to this configuration, although a certain gap (dimension g) in the height direction is required between the upper end of the coil 13 and the elevating body 53, no hanging jig is used. The overall height dimension c4 can be significantly reduced, and as a result, assembling work can be performed even when the ceiling height is low. In a specific example, the dimension g is 450 mm and the dimension c4 is 3400 mm.

FIGS. 12 and 13 show a sixth embodiment (corresponding to claim 7) of the present invention. In the assembling apparatus according to the present embodiment, the coil 13 is directly moved up and down, so to speak, without using the frame 23. That is, the assembling apparatus includes a support 61 for supporting the coil 13 in a mounted state, and an elevating device 62 for elevating and lowering the support 61 from the side. In this case, as the elevating device 62, an existing forklift or lifter for lifting and transporting a heavy object by the pair of L-shaped claws 62a is used.

The support 61 is, as shown in FIG.
A mounting portion 63 on which the coil 13 is mounted, and the mounting portion 63
And a vertical wall portion 64 that rises vertically from the right end portion. At this time, FIG.
As shown in the figure, the placing section 63 is provided with the coil 1 in the middle section.
3 has an opening 63a for opening the bottom of the hollow portion 13a (shown by imaginary lines) without closing it. Further, as shown in FIG. 13B, the bottom surface of the mounting portion 63 has a convex portion 63b which is convex downward at an intermediate portion in the drawing, and the left and right sides of the convex portion 63b. The pair of claws 62a of the lifting device 62 are inserted into the portion.

Further, the coil 1 is provided on the vertical wall portion 64.
Stop fitting 66 for fixing 3 with fixing band 65
And the vertical wall portion 64 is bolted to the claw 62a of the elevating device 62 (see FIG. 12).
A bolt insertion hole 64a is provided for fixing by using.

In such a configuration, first, the coil 13 is mounted on the mounting portion 63 of the support 61 mounted on the floor F, and is fixed by the fixing band 65. Then, the pair of claws 62a of the lifting / lowering device 62 are moved from the right side in FIG.
3, and the vertical wall 64 is fixed to the claw 62 a by a bolt 67. From this state, the coil 13 is lifted to a position (height dimension a2) higher than the leg portion 14,
The hollow portion 13a is horizontally moved so that it is directly above the leg portion 14, and then lowered. Thereby, the coil 13 can be fitted into the leg portion 14.

According to this embodiment, since the coil 13 can be inserted and lifted from the side by the lifting device 62, unlike the case where the coil 13 is lifted from above, the coil 13 is placed above the coil 13. There is no need for large space. Therefore, even when the ceiling height of the installation location is relatively low, the assembling work can be performed.
Specifically, a height dimension a2 for lifting the upper end of the coil 13
Can be completed at 2900 mm. In addition, a general-purpose forklift or lifter can be employed as the elevating device 62, and an advantage that it can be relatively inexpensive can be obtained.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention. For example, as a configuration of a hanging jig having an opening, a modified example as shown in FIG. 14 or FIG. 15 can be considered. That is, the hanging jig 71 shown in FIG.
Is formed integrally with a U-shaped frame portion 71a and extending portions 71b extending laterally from both left and right end portions of the frame portion 71a. In addition, a connection hole 7 is provided in each extension 71b.
2 are formed. Also in this case, the inside of the frame portion 71a serves as an opening for avoiding interference with the upper end of the leg portion 14.

The hanging jig 73 shown in FIG. 15 integrally has a frame portion 73a in the form of a semicircular ring on the upper surface and extending portions 73b extending laterally from both left and right ends of the frame portion 73a. The connecting hole 74 is formed in each of the extending portions 73b. Also in this case, the semicircular space inside the frame portion 73a serves as an opening for avoiding interference with the upper end of the leg portion 14.

[0059]

As apparent from the above description, according to the transformer assembling apparatus and the assembling method of the present invention, the transformer is loaded in a disassembled state and assembled on site. Even when the ceiling height is relatively low, an excellent practical effect that the assembling work can be performed is exhibited.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a front view showing a state where a coil is lifted.

FIG. 2 is a front view showing a state where a coil is fitted into a leg portion;

FIG. 3 is a top view showing a relationship between a hanging jig and a leg portion.

FIG. 4 shows the configuration of a hanging jig, and shows a front view (a) and a top view (b) side by side.

FIG. 5 is a front view of a transformer.

FIG. 6 is a view corresponding to FIG. 1, showing a second embodiment of the present invention;

FIG. 7 is a view corresponding to FIG. 1, showing a third embodiment of the present invention;

FIG. 8 is a side view of a main part.

FIG. 9 is a diagram corresponding to FIG. 4;

FIG. 10 is a view corresponding to FIG. 1, showing a fourth embodiment of the present invention;

FIG. 11 is a view corresponding to FIG. 1, showing a fifth embodiment of the present invention.

FIG. 12 is a view corresponding to FIG. 1, showing a sixth embodiment of the present invention;

FIG. 13 shows a configuration of a support, and is a diagram showing a plan view (a) and a side view (b) side by side.

FIG. 14 is a view corresponding to FIG. 4, showing a modification of the hanging jig.

FIG. 15 is a view corresponding to FIG. 4, showing another modification of the hanging jig.

FIG. 16 is a diagram corresponding to FIG. 1 showing a conventional example.

FIG. 17 is a diagram corresponding to FIG. 2;

[Explanation of symbols]

In the drawing, 11 is a transformer, 12 is an iron core, 13 is a coil, 1
4 is a leg portion, 15 is an upper yoke portion, 16 is a lower yoke portion, 1
9 is a coil supporting jig, 21, 34, 41, 71, 73
Is a lifting jig, 22, 31 and 43 are lifting / lowering devices (raising / lowering means), 23 is a frame, 23a is a column, 23b is a horizontal beam, 24, 44, and 45 are pulleys, 25 is a wire, and 26 is winding. Machine, 27 is an opening, 32 is a chain block, 51 is an elevating mechanism, 52 is a column, 53 is an elevating body, 61 is a support,
62 denotes a lifting device, and 63a denotes an opening.

Claims (8)

[Claims] When assembling a transformer comprising an iron core in which upper and lower ends of a plurality of legs are respectively connected by upper and lower yokes, and a coil inserted into each of the legs,
An apparatus for fitting said coil from above into each of said legs of said iron core with said upper yoke removed, comprising an L-shaped support for supporting a lower end surface and an outer peripheral surface of said coil. A plurality of coil supporting jigs, a hanging jig in which an upper end of each of the coil supporting jigs is connected in a suspended state, and elevating means for lifting and lowering the hanging jig. The apparatus for assembling a transformer, wherein the hanging jig has an opening for avoiding interference with an upper end of the leg portion. 2. A gate-shaped frame having a horizontal beam at an upper end of a column, the pulley being provided on the horizontal beam of the frame, and a lifting device comprising: And a winding machine for winding and sending out the wire, the wire being wound around the pulley and connected to a suspending jig, and wound and sent out by the winding machine. 2. The transformer assembling apparatus according to claim 1, wherein the transformer is assembled. The lifting means includes a gate-shaped frame having a horizontal beam at an upper end of a column, which is disposed so as to straddle an installation portion of the iron core, and a hanging jig provided on the horizontal beam of the frame. 2. The transformer assembling apparatus according to claim 1, further comprising a hanging chain block. 4. The coil is supported by two coil supporting jigs, the hanging jig is hung by two chain blocks, and the coil in the hanging jig is provided. 4. The transformer assembling apparatus according to claim 3, wherein the connecting position of the supporting jig and the hanging position of the chain block are different from each other by 90 degrees. 5. When assembling a transformer comprising an iron core in which upper and lower ends of a plurality of leg portions are connected by upper and lower yoke portions, respectively, and coils inserted into the respective leg portions.
An apparatus for fitting said coil from above into each of said legs of said iron core with said upper yoke removed, comprising an L-shaped support for supporting a lower end surface and an outer peripheral surface of said coil. A plurality of coil supporting jigs, a suspending jig in which an upper end of each of the coil supporting jigs is connected in a suspended state, and an upper end of a pillar disposed so as to straddle the installation portion of the iron core. A gate-shaped frame having a horizontal beam at a portion thereof, a pulley provided on the horizontal beam of the frame, and a wire provided on a support of the frame and connected to the hanging jig, being wound around the pulley. And a winding machine that performs winding and delivery in a state where the transformer is mounted. 6. When assembling a transformer comprising an iron core having upper and lower ends connected to a plurality of legs at upper and lower yoke portions, respectively, and a coil inserted into each of said legs.
An apparatus for fitting said coil from above into each of said legs of said iron core with said upper yoke removed, comprising an L-shaped support for supporting a lower end surface and an outer peripheral surface of said coil. A plurality of jigs for supporting the coil, and an elevating mechanism arranged to straddle the installation portion of the iron core, and an elevating mechanism for elevating and lowering the elevating body in which the upper ends of the respective jigs for supporting the coil are connected in a suspended state between the columns. And a transformer assembling apparatus. 7. When assembling a transformer comprising an iron core having upper and lower ends connected to a plurality of legs at upper and lower yoke portions, respectively, and a coil inserted into each of said legs.
An apparatus for fitting said coil from above into each of said leg portions of said iron core with said upper yoke portion removed, wherein said coil is supported in a mounted state, and said hollow portion of said coil is a bottom surface. An assembling apparatus for a transformer, comprising: a support having an opening to be opened by a step; and an elevating device for elevating the support from a side. 8. A method for assembling a transformer comprising an iron core having upper and lower ends connected to upper and lower yoke portions of a plurality of leg portions, respectively, and coils inserted into the respective leg portions. A step of installing an iron core in a state where the upper yoke part is removed; and using the transformer assembling apparatus according to any one of claims 1 to 7 for each leg part of the iron core. And a step of attaching an upper yoke section for connecting the respective leg sections.