JPS587614Y2 - Pole-mounted transformer floor fixing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floor fixing device for a pole-mounted transformer, and is useful when installing a pole-mounted transformer having a hanger seat, which is a pole fitting, on the floor.

Generally, pole-mounted transformers standardized and manufactured for pole mounting have a hanger seat, which is a pole mounting metal fitting, but do not come with a base for fixing to the floor, so they cannot be installed on the floor as is.

In addition, it is theoretically possible to modify the transformer tank for installation by welding the base to the bottom plate of the transformer tank, but since the transformer tank is already filled with insulating oil along with the transformer body, Such welding work is not recommended.

Therefore, conventionally, as shown in FIG. 1, after the transformer tank 1 is placed on the floor 2, a fixing metal fitting 4 having an angular cross section is attached to the lower side of the transformer tank 1 via a vibration isolating rubber 3. One end is brought into contact and tightened with a band 5, and then the other end of the fixture 4 is fixed to the floor 2 with an anchor bolt 6.

In this case, three to four fixing fittings 4 are brought into contact with the transformer tank 1 in the circumferential direction.

Further, in FIG. 1, 7 is a cooling piece, and 8.8a is a hanger seat which is a pillar mounting metal fitting.

Therefore, in this conventional structure, the tightening position of the band 5 is inevitably the lowermost side surface of the transformer tank 1 in relation to the cooling piece 7.

For this reason, there is no particular problem if the transformer capacity is up to about 1φ50 KVA, but if the capacity is larger than that, the weight and height will increase, and there will be concerns about its earthquake resistance.

In other words, since there is no support rod to support the upper or middle portion of the transformer tank 1, there is a risk that the limit of the tightening force of the band 5 will be exceeded.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a floor fixing device for a pole transformer that can secure the pole transformer more firmly and stably.

In this case, the present invention utilizes a hanger seat, which is a pole mounting metal fitting that a pole-mounted transformer inherently has for its purpose.

Therefore, the configuration of the present invention has a base on which a pole-mounted transformer equipped with a hanger seat, which is a pole mounting metal fitting, can be placed and fixed to the floor, and the hanger seat is fixed to the floor using a band or a tightening bolt. It is characterized in that it has a support that can be fixed to the base and is planted in the base.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 2a, l), the base 9 is fixed to the floor 2 with anchor bolts 6.

The transformer tank 1 is placed on a base 9.

A support 10 is installed on the base 9 adjacent to a hanger seat 8 of the transformer tank 1, and the hanger seat 8 is tied to the support 10 via a band 11.

Therefore, the support column 10 has a circular cross section, and its curvature is approximately the same as that of the hanger seat 8.

In this embodiment, the support 10 has a stay 1 for increasing strength.
0a is fixed.

By binding the hanger seat 8 to the support column 10 with the band 11, the transformer tank 1 is attached to the base 9 with the same strength as when it is installed on the support column.
In this embodiment, the steady rest device 12 further stabilizes this fixation.

That is, this steady rest device 12 is arranged at four points on the circumference on the base 9 surrounding the lower side surface of the transformer tank 1 so as to sandwich the lower side surface of the transformer tank 1 from four sides. .

FIG. 4 is an enlarged view showing an extracted portion of the steady rest device 12.

To explain in more detail based on the figure, this steady rest device 12 includes a perforated seat 12a, a pusher 12b, a retainer 12C, a stopper 12d, and a vibration isolator 12e.

At this time, the perforated seat 12a is fixed to the base 9 by bolts 12f and nuts 12g, and has a horizontal through hole.

The pusher 12b passes through the through hole and presses the vibration isolator 12e against the lower side surface of the transformer tank 1 at its tip via a fitting 12d.

The locking nut 12C is for fixing the push pole l-12b.

Therefore, in this embodiment, first the hanger seat 8 is attached to the support 10.
The vibration isolating material 12 is tightened with a band 11, and the backing bolt 12b is inserted into the through hole of the perforated seat 12a.
e is pressed against the lower side of the transformer tank 1, and in this state the locking nut 12C is tightened.Next, another embodiment of the present invention will be described in detail with reference to FIGS. 4a to 4c.

Note that the same parts as those in the above embodiment are given the same numbers, and redundant explanations will be omitted.

The pillar 20 of this embodiment, which is installed in the base 9 and reinforced by the stay 208, is a pillar with a U-shaped cross section, and the end faces of the legs 20b and 20C face the side surface of the transformer tank 1. It passes through the inside of the hanger seats 8, 8a.

At this time, the hanger seat 8 is attached to the tightening bolt 21 and nut 21a.
, 21b to the strut 20, and the hanger seat 8a to the tightening bolt 22 and oak) 22a, 22b, 22C to the strut 2
0, respectively.

That is, if the nut 21a is tightened with the head of the tightening bolt 21 in contact with the inside of the hanger seat 8, the end surfaces of the legs 20b and 20c of the support column 20 will come into contact with the side surface of the transformer tank 1. (further loosened) 21 Tighten b.

At this time, vibration isolating material 2 is provided between the support column 20 and the transformer tank 1.
Let 3 intervene.

On the other hand, the hanger seat 8a is fixed after passing the tightening bolt 22 through the hanger seat 8a and the support 20.
, 22b, and 22C, respectively.

Also, in this embodiment, the transformer tank 1 is similar to the previous embodiment.
The lower side surface of is fixed by a steady rest device 12.

In addition, in both of the above-mentioned two embodiments, the steady rest device 12
However, depending on the capacity of the transformer, it may not be necessary.

If the transformer capacity is 1φ50KVA or less, a predetermined seismic performance can be ensured even if the steady rest device 12 is omitted.

As explained above in detail with the embodiments, the present invention involves installing a support on the base on which the transformer is placed, and attaching the hanger to the support in order to utilize the hanger seat that a pole-mounted transformer inherently has. Since the seat is fixed, the same level of fixing strength as when mounting on a pole can be obtained, and the earthquake resistance is dramatically improved compared to the conventional technology in which only the lower side of the transformer tank is fixed.

Furthermore, since the hanger seat is used as is, it is possible to eliminate waste caused by the standardized usage of pole-mounted transformers.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the prior art with the transformer tied up, FIG. 2 a is a plan view showing an embodiment of the present invention with the transformer tied up, and FIG. Fig. 3 is an enlarged front view showing the steady rest device part, Fig. 4a is a front view showing another embodiment of the present invention with the transformer fixed, and Fig. 4 shows the lower hanger. FIG. 4C is an enlarged sectional view of this part showing the state in which it is fixed to the seat, and FIG. 4C is an enlarged sectional view of this part showing the state in which it is fixed to the upper hanger seat. In the drawing, 2 is the floor, 8, 8 a is the hanger seat, 9 is the base,
10.20 is a support, 11 is a band, and 21, 22 are tightening bolts.

Claims (1)

[Scope of utility model registration request] It has a base on which a pole-mounted transformer equipped with a hanger seat, which is a pole mounting metal fitting, can be placed and fixed to the floor, and the hanger seat can be attached with a band or a tightening bolt, and the above-mentioned A floor fixing device for a pole-mounted transformer, characterized by having a support installed in the base.