JPS6339946Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a device for supporting the contents of a wound core transformer within a case.The purpose of this invention is to simplify the structure of the support device and make it inexpensive. By making assembly easy and supporting the transformer contents to the case quickly and easily,
The objective is to improve the productivity of wound core transformers.

Conventionally, as a device for supporting the contents of a transformer, for example, as shown in FIG. After connecting the clamps 3 and 4 with the tightening band 2a, cut out dogleg-shaped notches 5 provided at both longitudinal ends of the lower clamp 4 on the bottom plate 6a of the case 6 in correspondence with the notches 5. The transformer contents 8 are housed in the case 6 by engaging with the dog-shaped locking piece 7 provided protruding from the upper clamp 3, and the mounting arm 9 fixed to the upper clamp 3 is inserted into the case 6 The transformer contents 8 were attached to the case 6 by tightening bolts 9a to mounting seats 10 provided on the upper side of the transformer. However, in the above-mentioned transformer contents support device, the locking piece 7 that engages with the notch 5 of the lower clamp 4 is provided on the bottom plate 6a of the case 6 to protrude accurately at a predetermined position of the bottom plate 7. Otherwise lower clamp 4
Since it is difficult to engage the locking pieces 7 with the locking pieces 7, the work of attaching the locking pieces 7 is very time-consuming and troublesome, as it is performed by welding.Moreover, the work is inefficient as it has to be attached one by one. It was spot on. When supporting the transformer contents 8 in the case 6, the contents 8 are once lifted onto the case 6, and then the two notches 5 of the lower clamp 4 are connected to the locking pieces 7 on the bottom plate 6a. Gradually lower the transformer contents 8 into the case 6 while watching the locking piece 7 from above the case 6 so that the notch 5 of the lower clamp 4 is properly engaged with the locking piece 7.
The contents 8 were supported by the case 6 by being engaged with the case 6. However, with this method, when the transformer contents 8 are lowered, the contents 8 are lowered in a suspended state, so they tend to shake from side to side. When you get tired,
Since it is impossible to see the locking piece 7 from above the case 6, the engagement between the notch 5 of the lower clamp 4 and the locking piece 7 is done by the operator's intuition.
It has been difficult to quickly and easily support the transformer contents 8.

The present invention eliminates the above-mentioned drawbacks and provides a simple structure and low cost support device for the transformer contents that quickly and reliably supports the contents of the transformer to the case. This embodiment will be described with reference to FIGS. 3 to 5. Reference numeral 11 denotes a wound core of a transformer, and coils 12 are fitted into both legs of this wound core 11 to form a transformer body 13. 14,15
are U-shaped upper and lower clamps that are attached to the upper and lower surfaces of the wound core 11, and the upper clamp 14 has an L-shaped mounting arm 16 on the upper surface of its longitudinal end.
is provided corresponding to the mounting seat 18 that projects above the outer surface of the case 17, and a through hole 20 through which the tightening band 19 passes is bored in the center of the upper clamp 14. has been done. The lower clamp 15 is manufactured so that its length in the longitudinal direction is approximately the same as the left-right dimension inside the case 17 (the longitudinal direction of the case 17), as shown in FIGS. 3 and 4. In addition, the bent piece 15a of the lower clamp 15 has a
As shown in FIG. 3, a support rod 21 made of a pipe or a round bar is attached at a position slightly inside the outer surface of the leg of the wound core 11 in the front-rear direction ( The length is approximately the same as the length (direction perpendicular to the longitudinal direction of the case 17),
The lower outer periphery of the wound iron core 11 is fixed to the lower clamp 15 so as to be perpendicular to the lower clamp 15 so as to sandwich it from both sides.

In the figure, 22 is a tightening bolt for fixing the mounting arm 16 to the mounting seat 18, and 23 is the bottom plate of the case 17.

Next, to explain the case where the transformer contents 13 are supported by the case 17, first, the lower clamp 1
Support rods 21, 21 existing between bent pieces 15a of 5
Pass the tightening band 19 from below across the wound core 11 with the coil 12 inserted therein.
is placed upright on the lower clamp 15 between the support rods 21, 21, and then the upper clamp 14 is fitted onto the upper part of the wound core 11, and the tightening band 19 is
The upper and lower clamps 14 and 15 are attached to the wound core 11 by passing between the wound core 11 and the coil 12 and pulling them out from the through hole 20 of the upper clamp 14 onto the upper clamp 14 and tightening them. Thereafter, the transformer contents 13 are lifted onto the case 17 by a lifting device (not shown), and both longitudinal ends of the lower clamp 15 are placed in the left and right directions of the case 17.
The ends of the support rods 21 are located in the front and back directions of the case 17, and then the lower clamp 15 and the longitudinal ends of the support rods 21 are placed in the corresponding case 1.
The inside of the transformer 13 is in contact with the inner wall of 7.
, the lower clamp 15 is attached to the bottom plate 23 in the case 17.
lower it until it makes contact with the The transformer contents 13 housed in the case 17 are formed so that the lower clamp 15 and the support rod 21 are close to each other so that they are likely to come into contact with the inner wall of the case 17. It does not move back and forth or left or right within the space 17. After this, attaching arm 1 of upper clamp 14
6 through the tightening bolt 22 and screwing the tightening bolt 22 into the mounting seat 18 provided on the outer surface of the case 17.
The transformer contents 13 are fixed to the case 17.

In addition, instead of the lower clamp 15 being formed in a U-shape, as shown in FIG. The present invention can also be achieved even if the lower clamp 16' is formed by penetrating and fixing the lower clamps 21 and 21 in the same way as the lower clamp 15 of the present invention.

As mentioned above, in the present invention, the longitudinal length of the lower clamp fitted into the lower part of the winding core is almost the same as the longitudinal dimension of the case. Attach a support rod with approximately the same size as the dimension in the direction orthogonal to the direction perpendicular to the lower clamp so as to sandwich the lower part of the outer periphery of the wound core from both sides, and straddle between the support rods of this lower clamp and attach it to the outer periphery of the wound core. The lower clamp and the upper clamp fitted to the upper part of the wound core are tightened and fixed together by the circumferential tightening band, and then the contents of the transformer are stored in the case and the lower clamp is tightened. The contents of the transformer are supported without moving inside the case by the support rods attached to the clamps, and then the mounting arms are fixed to the mounting seats provided on the case, and the contents of the transformer are placed inside the case. - It is designed to be supported and fixed to the case, and as in the conventional case, a notch is provided at both ends of the lower clamp, a locking piece is provided protruding from the bottom plate of the case, and the above-mentioned notch is connected to the locking piece. Unlike the case in which the contents of the transformer are supported by the case by engaging the lower clamp itself, in this case, the lower clamp itself is supported by the case.
In a direction perpendicular to the longitudinal direction of the case, a support rod having a length dimension that is approximately the same as the length in that direction is attached to the lower clamp so as to sandwich the lower part of the wound core. By installing the transformer perpendicularly to the longitudinal direction, when the transformer is housed in the case, the lower clamp and support rod will be received by the corresponding inner wall of the case, so that the transformer's contents will not be exposed. There is no need to cut out a notch in the lower clamp in order to support it in a predetermined position within the case, or to weld locking pieces one by one to predetermined positions on the bottom plate in order to properly engage the notch. Since there is no such thing, the structure of the transformer body support device can be significantly simplified. Moreover, the support device
Since it is only necessary to attach a support rod having approximately the same length as the dimension in the direction perpendicular to the longitudinal direction of the case to the lower clamp, it can be manufactured easily and at low cost. Also, when storing the contents of the transformer in the case, as in the past, the contents of the transformer must be carefully lowered and half-explored by hand in order to engage the notch of the lower clamp with the locking piece on the bottom plate of the case. There is no hollow support at all, and both the lower clamp and support rod are provided to match the dimensions of the case.
The contents of the transformer can be easily and securely stored inside the case by simply aligning the lower clamp and support rod with the open end of the case, and then lowering it vertically into the case. Since it can be supported without moving from side to side or front to back, the work of assembling the contents of the transformer into the case can be done quickly and easily, making it possible to significantly improve the production efficiency of wound core transformers. Furthermore, when installing the tightening band, the lower clamp supports the hole through which the tightening band passes without having to provide a special tongue piece that receives the tightening band on the lower side of the core. Since it is only necessary to extend it between the rods, the structure of the lower clamp itself can be simplified, and this support rod can also be used to securely support the case inside the transformer. Since the support rod of the band is rounded, it has many excellent effects such as no breakage during winding.

[Brief explanation of the drawing]

Fig. 1 is a partial longitudinal sectional front view of a transformer showing a conventional transformer internal support device, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a transformer equipped with a transformer internal support device of the present invention. 4 is a sectional view taken along line BB in FIG. 3, and FIG. 5 is a perspective view of the lower clamp.
FIG. 6 is a perspective view showing another embodiment of the lower clamp. 11... Winding core, 12... Coil, 13... Transformer contents, 14... Upper clamp, 15... Lower clamp, 21... Support rod.

Claims (1)

[Scope of utility model registration request] A lower clamp whose longitudinal dimension is approximately the same as the longitudinal dimension of the case is attached to the lower part of the wound core with coils on both legs. A pair of support rods formed with approximately the same dimensions in the direction perpendicular to the
The lower clamp is fixed perpendicularly to the longitudinal direction so as to sandwich the lower part of the outer periphery of the wound core, and the upper clamp is attached to the upper part of the wound core so as to face the lower clamp. A device for supporting the inside of a transformer, characterized in that the transformer is tightened and fixed by a tightening band provided around the outside of the wound core across the support rods.