JPH0134481Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] This idea relates to a switchboard.

[Conventional technology]

Conventionally, the shape, size, and layout of unit-enclosed type switchboards have been roughly determined depending on the application.For example, in the case of a feeder as shown in Figure 1, the interior is a low-voltage terminal block room due to its function. It is roughly divided into three parts: 1, machine room for disconnectors, auxiliary equipment, etc. 2, and busbar, transformer, and cable room 3.
It is common to construct a dedicated frame that serves as an integrated framework using molded/U-shaped steel 4, and weld a bottom plate 5, a ceiling plate 6, and a side plate 7 to the outside of this frame by welding or the like.

[Problem that the invention attempts to solve]

Incidentally, in recent years, NC turret punch presses and NC brakes have come into widespread use. However, in the above-mentioned switchboard, the construction of the frame body after automatic machining is entirely done manually, which requires a considerable amount of work time and has the drawback that the machine cannot be used effectively and work efficiency is low.

In addition, galvanized steel sheets are widely used these days, but the switchboards have many welded parts.
The disadvantage is that the zinc plating burns and the rust prevention ability decreases.

Furthermore, since the structure is such that each plate 5, 6, 7 is attached to the outside of the frame, the overlapping parts of the L-type, C-type, and U-shaped steel 4 and the steel plates of each plate 5, 6, and 7 are doubled. , there is a drawback that the steel plate is wasted.

[Means for solving problems]

In view of the above-mentioned drawbacks, this invention aims to provide a power distribution board using only plate processing, and uses plates with bent portions on each of the four sides of a plurality of chambers divided according to function. A power distribution board is constructed by fastening the top plate onto the bottom plate, fastening the ceiling plate onto each plate, and further fastening adjacent plates together. Further, the bottom plate has both side edges bent upward and inward in two steps,
A U-shaped space for wiring ducts is formed. The respective parts are fastened using fasteners made of bolts or rivets.

[Effect]

A plate for each chamber is disposed on the inwardly folded piece of the bottom plate, and the bottom plate, the plate, and adjacent ones of the plates are fastened together.
Further, one ceiling plate is commonly disposed on each of the plates, and both are fastened together. Therefore, there is no need for a dedicated frame that forms the framework of the switchboard. The U-shaped space created by the two-step bending of the bottom plate is used as a wiring duct.

〔Example〕

Next, this idea will be described in the second section showing one embodiment of the invention.
This will be explained in detail with reference to the drawings below.

In these drawings, 8 is the bottom plate that serves as the standard for the size of the switchboard, and the edges on both sides are bent in two steps upward and inward to give the front a shape, in order to improve its strength. . The U-shaped space 9 formed by the two-step bending of the bottom plate 8 is used as a wiring duct.

Reference numerals 10, 11, and 12 are a low-voltage terminal room, an equipment room for disconnectors, auxiliary equipment, etc., and a busbar/transformer/cable room, which are divided by function.

13, 14, 15 are provided on both sides of each chamber 10, 11, 12, respectively, and bent portions 13', 1 are provided on the four sides.
4' and 15', and as shown in FIG.
A bent portion 13' is formed using a brake, and a single plate 13a is formed.
L-shaped steel 13 having a bent portion 13' on the remaining side of
The plate 13 is constructed by fixing the parts b by rivets or spot welding.

Each of these plates 13, 14, 15 is then mounted on the bottom plate 8.

That is, as shown in FIG. 4, the inwardly bent portions 13' of the lower side of the plate 13 are fastened to the inwardly bent pieces 8' on both sides of the bottom plate 8 with fasteners made of bolts or rivets. be done.

Furthermore, the other plates 14 and 15 are also fastened to the bottom plate 8 in the same manner.

Next, both bent portions 13', 14', 15' of adjacent plates 13, 14, 15 are fastened with fasteners such as bolts or rivets.

16 is a single ceiling plate attached to the top surface of each plate 13, 14, 15;
Bent parts 13', 14', 1 on the upper sides of 3, 14, 15
5', the side edges of the ceiling plate 16 are fastened with fasteners made of bolts or rivets.

These bottom plate 8, plates 13, 14,
15 and the ceiling plate 16 constitute a power distribution board,
When the switchboard is completed, the bottom plate 8 and the ceiling plate 16 prevent the plates 13, 14, and 15 from waving.

In addition, each plate 13, 14, 15 is
Bent parts 13', 14', and 15' are formed on the sides to improve the strength of the switchboard, and similarly, bent parts 8' are formed on the front and rear edges of the bottom plate 8. This increases the strength of the switchboard.

Also, when assembling the storage equipment in each room 10, 11, 12, it may be easier to work from the side of the switchboard, and in this case, all of these plates 13, 14, 15 are blind plates. Without,
It is desirable to punch out holes 17 in the plates 13, 14, 15 on one side, as shown by the two-dot chain line in FIG. That is, the low voltage terminal room 10 and the equipment room 11 have blind plates 13 on both sides.
A blind plate 15 is installed on one side of the busbar/transformer/cable room 12 to perform work from the front.
It is desirable to form a hole 17 on the other side and assemble the storage device from the side and back.

Therefore, according to the embodiment, the side plates 1 of each chamber 10, 11, 12 are placed on the common bottom plate 8.
3, 14, 15, and plate 1.
3, 14, and 15 to form a power distribution board by fastening a single ceiling plate 16 on top of the panels 3, 14, and 15 to form a so-called plate structure.
The work is mainly performed by automatic machines using NC turret punches and NC brakes, making it possible to achieve mechanization.The switchboard is constructed by simply tightening these parts, and a special frame is not required, which greatly reduces manual work. Work time can be shortened, work efficiency can be improved, and since the number of welded parts can be minimized, it is possible to prevent a decrease in rust prevention ability due to burnout of galvanized plating.

In addition, as mentioned above, this type of switchboard has a shape, size, and layout that are roughly determined depending on its use, and therefore has rooms 10 divided by function,
11 and 12 are each independently determined in size and shape depending on the type and capacity of the equipment, so the plates 13, 14, and
15 can easily standardize each plate 13, 14, 15, and these plates 13, 14, 15
mass production is possible.

Furthermore, plate 1 that constitutes the side plate of the switchboard
3, 14, and 15 have a structure in which bent parts 13', 14', and 15' are formed by the NC brake on three sides, and L-beam steels 13b, 14b, and 15b are attached to the remaining one side, so the NC brake is not applied. Eliminates the need to replace brake molds during use.

Moreover, the strength of the plates 13, 14, 15 can be improved by the bent parts 13', 14', 15' on the four sides, and the plates 13, 14, 15 are particularly strong because they are attached to the front and rear sides of the switchboard. In addition, if heavy equipment such as a sheath cutter is attached to the plate 14 of the machine room 11, a plate made by bending a plate of a specified thickness will not be strong enough.
For these, sufficient reinforcement and workability have been taken into consideration.

In addition, the assembly of the bottom plate 8, plates 13, 14, 15, and ceiling plate 16 is performed using the folded piece 8' of the bottom plate 8.
and bent portions 13', 1 of plates 13, 14, 15
4' and 15', the workability of the tightening process can be improved and materials can be used effectively.

[Effect of idea]

According to this idea, the switchboard consists of a bottom plate, a plate,
Since it is constructed by fastening the ceiling plate, there is no need for a dedicated frame that was previously required, simplifying the structure. In addition, the bottom plate, plate, and ceiling plate can be processed using automatic machines. As a result, when manufacturing switchboards, manual labor can be minimized, work time can be shortened, and work efficiency can be improved.

Moreover, standardization for each plate becomes easier,
Its mass production is possible.

Further, since each plate has bent portions on four sides, not only the strength can be improved, but also the bent portions can be used for fastening, making effective use of the material, and a dedicated frame body is not required.

Furthermore, since the number of welded parts can be minimized, it is possible to prevent a decrease in rust prevention ability due to burnout of the galvanized coating.

Furthermore, since a dedicated frame is not used, there is no overlap between the frame and the steel plate, and no steel plates are wasted.

In addition, in order to tighten the bottom plate and the bent portions at the bottom of each plate, the U-shaped space formed by two-step bending on both sides of the bottom plate can be effectively used as a wiring duct. It is particularly effective as a power distribution board.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional unit closed type switchboard.
Figure 2 and the following drawings show one embodiment of the switchboard of this invention, Figure 2 is a perspective view, Figure 3 is a perspective view of the plate, and Figure 4 shows a part of the combination of the bottom plate and the plate. FIG. 8...Bottom plate, 8'...Top piece, 9...U-shaped space, 10...Low voltage terminal block room, 11...Machine room,
12...Bus bar/transformer/cable room, 13,1
4, 15...Plate, 13', 14', 15'...
...Bending part, 16...Ceiling board.

Claims (1)

[Claims for Utility Model Registration] A bottom plate with a U-shaped space for a wiring duct formed by two-stage bending upward and inward on both side edges, and a plurality of chambers divided according to function on this bottom plate. a plurality of plates having only bent portions having a length shorter than the left and right lengths of the bottom plate at the upper and lower edges and the left and right edges, arranged on top of each of these plates; a fastening tool that fastens one ceiling board, the bent part of the lower side of each of the parallel plates, and the inwardly folded piece of the bottom board that forms the U-shaped space; , a fastening tool that fastens the bent portions of the side sides of the adjacent plates; and a fastening tool that fastens the bent portions of the upper sides of each plate and the peripheral edge of the ceiling plate, respectively. A switchboard equipped with