JP6830732B2 - Base structure of power distribution equipment - Google Patents

Description

The present invention relates to a base structure of a large power distribution facility such as a cubicle.

A cubicle is a facility that receives power supplied from a substation at 6.6 kV, steps down to 100 V or 200 V, and distributes power to the inside of factory equipment or the like. The power distribution equipment is usually housed inside a plurality of housing bodies. Of the power distribution equipment, for example, a transformer is heavy, so a main body base capable of supporting a large load is attached to the bottom surface of the housing main body. The main body base is usually made of high-strength steel such as H-shaped steel or channel steel in the shape of a quadrangular frame, and is fixed to the floor surface by anchor bolts.

Before installation, it is necessary to level the floor to be installed and drive anchor bolts in advance. After that, the main body of the housing equipped with the main body base will be brought to the site for installation work, but the anchor bolt driving position and the anchor bolt insertion hole formed in the main body base do not exactly match. Sometimes. In such a case, it is necessary to correct the anchor bolt insertion hole at the site, but the main body base may be fixed to the heavy housing main body, and the workability is significantly reduced.

Therefore, as shown in Patent Document 1, prior to the main body installation, the pre-installation base (pre-paid channel base in Patent Document 1) is used for leveling and anchor bolt driving, and then on the pre-installation base. The main body base of the housing body is attached to. In Patent Document 1, the pre-installation base is a channel steel with an opening facing the floor surface, and the main body base is a channel steel with an opening facing inward.

If such a base for pre-installation is used, leveling and positioning of anchor bolts can be easily performed, and installation workability can be improved. However, since the entire housing body is lifted by the height of the base for pre-installation, the height of the center of gravity from the floor becomes high and the seismic performance changes. Since the seismic calculation at the time of design is performed on the premise that the main body base is fixed to the floor surface, it will be necessary to redo the seismic calculation.

Further, since the main body base is overlapped on the pre-installed base, there is a problem that the appearance is poor. Furthermore, it is necessary to fasten the bolt insertion holes between the pre-installation base and the main body base while accurately aligning them, but since the main body base is integrated with the heavy-duty housing main body, a crane can be used. There was also a problem that this work was not easy because the position had to be adjusted while lifting. For reference, FIG. 10 shows an installation example in which a base having the same structure as the main body base is used as the base for pre-installation.

JP-A-2000-152427

Therefore, an object of the present invention is to solve the above-mentioned conventional problems, to provide a base structure of a power distribution facility having excellent on-site installation workability without the need to redo seismic calculations.

The present invention made to solve the above problems is a frame-shaped main body base attached to a housing main body in which a power distribution device is housed, and a pre-installation base located below the main body base. In the base structure of the power distribution facility composed of a base, the main base has horizontal planes on the upper side and the lower side, and the base for pre-installation includes the lower horizontal plane and the vertical plane connected to the horizontal plane. sectional shape, and all SANYO located inside the body base, which is characterized in that superimposed horizontal plane of the main body base under the base side from the top of the horizontal plane of previously established for base under the base side Is.

The pre-installation base may be frame-shaped or may be composed of two opposing members.

In the base structure of the power distribution equipment of the present invention, the base for pre-installation has a cross-sectional shape including a horizontal plane and a vertical plane connected to the horizontal plane, and is located inside the base of the main body. As in the past, the entire base is not lifted by the height of the pre-installation base, and there is no need to redo the seismic calculation. Moreover, since the base portion does not have a two-stage structure, it looks good.

The pre-installation base of the present invention is installed not for the purpose of supporting the main body base as in the conventional case, but for the purpose of leveling and positioning the installation location. Therefore, the base for pre-installation is not limited to the frame shape, and may be composed of two opposing members.

It is an exploded perspective view which shows the base structure of 1st Embodiment. It is an overall perspective view which shows the state before installation. It is an enlarged view of the main part of FIG. It is sectional drawing of the main part of 1st Embodiment. It is an overall perspective view which shows the state after installation. It is an enlarged view of the main part of FIG. It is sectional drawing of the main part which shows the 2nd Embodiment. It is an exploded perspective view which shows the 3rd Embodiment. It is an enlarged view of the main part of FIG. It is a perspective view which shows the installation example when the same base as the main body base is used as the base for pre-installation.

An embodiment of the present invention will be described below.
FIG. 1 is an exploded perspective view showing a base structure of the first embodiment, where 1 is a main body base and 2 is a pre-installation base.

The main body base 1 is made by welding or screwing channel steel having a substantially U-shaped cross section into a square frame shape, and both the long side member 3 and the short side member 4 are perpendicular to the upper horizontal planes 3A and 4A. It has surfaces 3B and 4B and lower horizontal planes 3C and 4C. In this embodiment, the long side member 3 has an opening facing inward, and the short side member 4 has an opening facing outward. A large number of mounting holes 31 are formed on the horizontal surface 3A on the upper side of the long side member 3 in order to mount the metal fittings for fixing the devices to be housed inside. Further, a main body mounting hole 5 is formed in the horizontal plane 4A on the upper side of the short side member 4, and an anchor fixing hole 6 is formed in the horizontal plane 4C on the lower side of the short side member 4.

Although shown separately in FIG. 1, the main body base 1 is integrated with the housing main body 7 of the power distribution equipment as shown in FIGS. 2 and 3, and the main body 7 is formed by the main body mounting holes 5. It is installed. A large number of ventilation slits 8 are formed on the vertical surface 4B of the short side member 4. Reference numeral 9 shown in FIG. 1 is a bottom plate of the housing body 7.

The pre-installation base 2 is made by welding or screwing a steel material having an L-shaped cross section into a frame shape. As shown in FIG. 1, both the long side member 10 and the short side member 11 include vertical planes 10B and 11B and lower horizontal planes 10C and 11C, with the lower horizontal planes 10C and 11C facing outward. An anchor fixing hole 12 is formed in 11C of the short side member 11 at the same position as the anchor fixing hole 6 of the main body base 1.

The pre-installation base 2 is formed so as to correspond to the inner diameter of the main body base 1, and when the main body base 1 is stacked from above the pre-installation base 2, the tip is as shown in FIG. It is located inside the main body base 1 while using the vertical surfaces 10B and 11B of the installation base 2 as guides.

At the time of installation, first, the installation location is positioned and leveled by using the pre-installation base 2. Since the pre-installation base 2 is lightweight, these operations can be easily performed. Next, the position of the anchor bolt is determined by using the anchor fixing hole 12 of the base 2 for pre-installation, and the anchor bolt 15 is driven into a foundation such as concrete on the floor surface. The upper part of the driven anchor bolt is passed through the anchor fixing hole 12 of the base 2 for pre-installation.

After that, the housing main body 7 is lifted by a crane or the like, and the main body base 1 is installed on the pre-installation base 2 as shown in FIGS. 5 and 6. At this time, as shown in FIG. 4, the main body base 1 is installed so as to cover the pre-installation base 2. As described above, the vertical surfaces 10B and 11B of the pre-installed base 2 are used as guides, but are located inside the main body base 1, and the main body base 1 is accurately positioned with respect to the pre-installed base 2. Therefore, the anchor fixing hole 6 of the main body base 1 coincides with the anchor fixing hole 12 of the pre-installation base 2, and the anchor bolt 15 is inserted, so that both are fixed.

As described above, in the present invention, the main body base 1 is installed outside the pre-installation base 2, so that the main body base 1 can be lifted by the height of the pre-installation base 2 as in the conventional case. It disappears and does not affect seismic calculation. Further, since the pre-installation base 2 is located inside the main body base 1, the base does not have a two-stage structure as in the conventional case, and the appearance is good.

Further, according to the present invention, the main body base 1 can be installed while using the pre-installation base 2 as a guide, and the positioning of the anchor fixing hole 6 and the anchor fixing hole 12 is easily and automatically performed. If the anchor bolts 15 are used for fixing, the foundation and the bases are fixed at the same time, so that workability can be improved and the number of parts can be reduced.

Next, a second embodiment will be shown. As can be understood from the matters shown in FIGS. 1, 3 and 4, in the first embodiment, the main body base 1 is installed on the horizontal planes 10C and 11C below the pre-installation base 2. The main body base 1 is lifted by the thickness of the lower horizontal planes 10C and 11C, although it is very small. Therefore, in the second embodiment shown in FIG. 7, recesses 13 corresponding to the thickness of the lower horizontal planes 10C and 11C of the pre-installation base 2 are provided on the lower surfaces of the lower horizontal planes 3C and 4C of the main body base 1. Formed. As a result, the bottom surface of the main body base 1 can be lowered to the same surface as the foundation, and the seismic performance according to the seismic calculation is ensured.

Next, a third embodiment will be shown. In this embodiment, the lower horizontal planes 10C and 11C are directed inward as the pre-installation base 2. An anchor fixing hole 12 is formed in the lower horizontal surface 11C. Further, a mounting hole 14 is formed on the vertical surface 11B of the pre-installation base 2, and a mounting hole is formed at the same position on the vertical surface 4B of the main body base 1.

In this third embodiment, since the horizontal planes 10C and 11C on the lower side of the pre-installation base 2 are directed inward, the main body base 1 does not rest on it, and the seismic performance according to the seismic calculation is ensured. Will be done. In addition, unlike other embodiments, the pre-installation base 2 and the main body base 1 are fixed by bolts in the horizontal direction.

In each of the above-described embodiments, the base for pre-installation is a frame body, but it may be composed of a plurality of separated members. However, it is preferable that the pre-installation base is composed of two opposing members so as not to hinder leveling and positioning. The pre-installation base composed of these plurality of members is also arranged so as to be located inside the main body base.

If the pre-installation base is composed of a plurality of separated members in this way, each member can be miniaturized, so that the transportation cost can be suppressed. In addition, there is an advantage that members having the same shape can be used and the types of parts can be reduced.

As described above, according to the present invention, it is possible to provide a base structure of a power distribution facility having excellent on-site installation workability without the need to redo seismic calculation.

Although the description has been given by exemplifying some embodiments so far, the present invention is not limited to the embodiments and can be in various embodiments. For example, the power distribution equipment can be something other than a cubicle, such as a power conditioner storage box or a large switchboard.

In the above embodiment, the vertical surfaces 10B and 11B are provided as plate members erected on the entire inner side surface or outer side surface of the long side member 10 and the short side member 11 in the longitudinal direction, but the vertical surfaces 10B and 11B are provided. , May be formed shorter than this. For example, it is possible to provide the vertical surfaces 10B and 11B so as to be located only at the corners of the pre-installation base which is the connecting portion between the long side member 10 and the short side member 11. As a more specific example of such an example, there is a structure in which vertical surfaces 10B and 11B are connected to form an L-shape at four corners of a pre-installation base.

1 Main body base 2 Base for front installation 3 Long side member 3A Upper horizontal plane 3B Vertical plane 3C Lower horizontal plane 4 Short side member 4A Upper horizontal plane 4B Vertical plane 4C Lower horizontal plane 5 Main body mounting hole 6 Anchor fixing hole 7 Housing body 8 Ventilation slit 9 Bottom plate 10 Long side member 10B Vertical surface 10C Lower horizontal surface 11 Short side member 11B Vertical surface 11C Lower horizontal surface 12 Anchor fixing hole 13 Recessed 14 Mounting hole 15 Anchor bolt 31 Mounting hole

Claims (3)

In the base structure of the power distribution equipment, which consists of a frame-shaped main body base attached to the main body of the housing in which the power distribution equipment is housed, and a base for pre-installation located below the main body base.
The main body base has horizontal planes on the upper and lower sides, and the pre-installation base has a cross-sectional shape including the lower horizontal plane and the vertical plane connected to it, and is located inside the main body base. der is, base structure of the distribution equipment, characterized in that superimposed horizontal plane of the main body base under the base side from the top of the horizontal plane of previously established for base under the base side which. The base structure for power distribution equipment according to claim 1, wherein the pre-installed base has a frame shape. The base structure of a power distribution facility according to claim 1, wherein the pre-installed base is composed of two opposing members.