JP2517384Y2 - Ground-mounted transformer tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ground-mounted transformer tower.

[Prior Art] When underground power distribution is performed, a ground-mounted transformer is used. The ground-mounted transformer is generally installed on the road, and therefore it is required to make the external dimensions as compact as possible. Therefore, in the conventional ground-mounted transformer, as shown in, for example, JP-A-57-201006, a hole is dug in the ground to form a pit, and a part of the transformer case is placed inside the pit. By doing
The size of the part of the transformer tower that extends to the ground is reduced. In the transformer tower disclosed in the publication, a pedestal for mounting the transformer case is provided at the bottom of the pit, and the transformer case is fixed on the pedestal.

[Problems to be Solved by the Invention] However, with such a structure, a work space for fixing the transformer case to the pedestal must be provided in the pit, the pit becomes large, and the pit and the transformer and There is a problem that the outer box that covers the peripheral devices such as the cable connection part and the switchgear becomes large. Also, when assembling the transformer tower, first fix the transformer on the pedestal, then
Since it was necessary to separately install the outer box, the installation work of the transformer tower was troublesome, and it was not possible to construct a transformer tower in which the transformer and the outer box were integrally assembled.

[Means for Solving the Problems] In the present invention, a base having a frame body and a plurality of U-shaped transformer receiving seats fixed to the frame body and supporting a transformer case in the opening of the pit. The frame is placed and the base frame supports the transformer case. Then, the transformer case is further fixed to the frame body of the base frame through the mounting bracket.

[Operation] According to the present invention, the transformer case is placed on the transformer seat of the base frame outside the pit, and the base frame is inserted into the pit so that a part of the transformer case is placed inside the pit. Can be placed. In this way, it is not necessary to enlarge the pit, and the transformer and the outer box can be assembled together. U fixed to the frame
If you just put the transformer case on the letter-shaped seat,
There is a problem that displacement of the transformer case occurs due to external vibration during transportation of the transformer tower or after installation of the transformer tower, and in the worst case, this displacement causes disconnection. According to the present invention, since the frame body of the base frame and the transformer case are fixed to each other via the mounting bracket,
The displacement of the transformer case can be prevented.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 (A) and 1 (B) are a schematic plan view and a side view showing a part of an embodiment of a ground-mounted transformer tower of the present invention in section. In these figures, 1 is a pit formed underground, and 2 is a transformer tower installed on the ground. The ground-installed transformer tower 2 includes a base frame 3 placed on the periphery of the opening of the pit 1, a transformer 4 supported by the base frame 3, and other peripheral devices (not shown) (high-voltage cable connecting portion). , A high-voltage switchgear, etc.) and an outer box 5. The base frame 3 includes a frame body 301 and U-shaped transformer receiving seats 304a to 304c.
The frame body 301 includes a pair of first opposite frames 302a and 3a having long sides.
02b and a pair of second opposite frames 303a and 303b on the short side. The first opposing frames 302a and 302b are
The frame is made of an iron frame member having a U-shaped cross section, and both frames are arranged with their openings facing inward. The second opposing frames 303a and 303b are also made of iron frame members having a U-shaped cross section, and both frames are arranged with their openings facing outward. The first and second opposing frames are fixed to each other by welding. Both ends of the U-shaped transformer receiving seats 304a to 304c are fixed to the first facing frames 302a and 302b by welding. The transformer seats 304a to 304c are the first
The transformers 4 are arranged at substantially equal intervals in the longitudinal direction of the opposing frames 302a and 302b. In this embodiment, the protruding portion 4 formed by protruding a part of the side wall portion of the transformer case 401.
The transformer case 401 is supported with the 03 abutting against the transformer receiving seats 304a to 304c.

The frame 301 is fixed to the ground by bolting the second opposing frames 303a and 303b to the peripheral edge of the opening of the pit 1.

Two mounting seats 402 ... Are fixed to both side walls in the longitudinal direction of the transformer case 401 of the transformer 4 with a space therebetween. The mounting seat 402 is used as a reinforcing member for the transformer case 401 when one side of the L-shaped mounting bracket 6 is bolted or welded to the transformer case 401. By using this mounting seat 402, the transformer case 4
The thickness of the iron plate used for the wall portion of 01 can be reduced, and as a result, the weight of the outer box 5 can be reduced.

The other side of the L-shaped mounting bracket 6 is the first opposing frame 30.
It is fixed to 2a and 302b. In order to fix the opposing frames 302a and 302b of the mounting bracket 6, the opposing frame 302a
The mounting seats 305 are also fixed to the corresponding portions of the and 302b by welding. A bolt hole is formed in this mounting seat 305. The bolt is passed through a through hole formed on the other side of the mounting bracket 6 and screwed into the bolt hole of the mounting seat 305, so that the mounting bracket 6 is mounted. It is fixed to 305.

The outer box 5 has a known structure, and the fixing frame 501 fixed to the inner wall portion of the outer box 5 is the base frame 3.
The outer box 5 is fixed to the base frame 3 by bolting to the frame body 301. The manner of fixing the outer case 5 and the base frame 3 is arbitrary.

Although an L-shaped metal fitting is used as the mounting metal fitting 6 in the above-described embodiment, the shape and structure of the mounting metal fitting may be any as long as it is arranged between the transformer case 401 and the frame body 301 and can fix them. Are optional and are not limited to the examples.

According to the above-described embodiment, since it is not necessary to provide a pedestal in the pit 1, it is easy to connect and route the distribution cable in the pit. Further, the transformer 4 and the outer box 5 can be integrally configured, and by fixing the outer box 5, a part of the transformer 4 can be positioned and fixed in the pit 1, so that the installation work can be performed. Very easy.

[Advantage of the Invention] According to the present invention, the transformer case is placed on the transformer receiving seat of the base frame outside the pit, and the base frame is inserted into the pit so that part of the transformer case is pitted. Since it can be placed inside, it is not necessary to enlarge the pit, and it is possible to assemble the transformer and the outer box together. Further, according to the present invention, since the frame body of the base frame and the transformer case are fixed to each other via the mounting bracket, there is an advantage that the displacement of the transformer case can be prevented.

[Brief description of drawings]

1 (A) and 1 (B) are a schematic plan view and a side view showing a part of an embodiment of a ground-mounted transformer tower of the present invention in section. 1 ... Pit, 2 ... Ground-mounted transformer tower, 3 ... Base frame, 301 ... Frame, 304a-304c ... Transformer seat, 4 ... Transformer, 401 ... Transformer case, 5 ... Outer box, 6 ... Mounting bracket.

Claims (1)

(57) [Scope of utility model registration request] 1. A base frame fixed to an opening of a pit formed in the ground, and a transformer fixed to the base frame such that a part of the transformer case is located inside the pit. An outer box fixed to the base frame so as to cover the transformer case and peripheral devices, the base frame being fixed to the opening of the pit, and fixed to the frame. It has a plurality of U-shaped transformer seats that support the transformer case, and the transformer case is fixed to the frame body of the base frame through a mounting bracket. A ground-mounted transformer tower.