JPS6330163Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a closed switchboard used as power receiving and distribution equipment.

Conventional enclosures for closed switchboards are constructed by using a frame made by combining and welding shaped steel to form each side of a rectangular parallelepiped, and by fixing side plates to the outer surface of this frame. When a frame made of shaped steel is used in this way, the weight of the box increases significantly, and there is a problem in that it becomes extremely difficult to transport the box in the case of a large closed switchboard. In addition, a large number of steel sections are required, and the number of welded sections of the section steels increases, which inevitably increases costs.

Therefore, as in the case of the switchboard shown in Publication No. 51-43385, the opposing front and rear side plates are formed into a U-shaped cross section to function as a frame, and each side plate and base It has been proposed to connect these parts with connecting bolts, thereby eliminating the need for section steel and reducing the number of welding points. However, in the case of this switchboard, it is necessary to prepare side plates of different shapes, so there is a problem that the number of parts inevitably increases. Furthermore, since the external dimensions of each side plate are different, the position of the side plate with the door attached to the inspection door cannot be freely changed, resulting in a problem that the degree of freedom in design is low.

The purpose of this invention is to reduce the number of parts by making the components of the enclosure that houses the equipment that makes up the switchboard as common as possible, and to reduce the number of parts by connecting bolts without using a framed frame. It is an object of the present invention to provide a closed power distribution board whose weight and cost are reduced by assembling a housing.

In the present invention, in order to solve the above-mentioned problems of conventional switchboards, the case is made up of a frame-shaped base and outer diameters arranged vertically on each side of the base to form the side walls of the case. Consisting of a plurality of side plates with the same dimensions, an upper frame body with the same size and shape as the base disposed on the upper ends of the side plates arranged side by side, and a ceiling plate fixed to the upper end of the upper frame body. . The plurality of side plates include a door side plate with a door. In the present invention, each side plate is connected to another adjacent side plate, the base, and the upper frame by connecting bolts.

The closed switchboard of the present invention will be described in detail below with reference to the illustrated embodiments.

The drawing is an exploded perspective view showing an embodiment of a closed switchboard according to the present invention, and in the drawing, 1 is a U-shaped cross-sectional steel section that is arranged so as to form each side of a rectangle and welded at the abutting portions. It is a rectangular frame-shaped base constructed by A large number of slit-shaped ventilation holes 2 are arranged in parallel at appropriate intervals on the vertical wall of the base 1. In addition, the upper and lower plate-like parts 1a, 1 of the base 1
A large number of connecting holes 3 are arranged in parallel at equal intervals in each of the holes b. A predetermined number of side plates 4, 4, . . . and a side plate 5 with a door are arranged upright on the upper plate portion 1a of each side of the base 1 so as to constitute the side walls of the enclosure. In the illustrated example, two side plates 4, 4 are arranged side by side on two opposing long sides 1A, 1B of the base 1, and one side plate is arranged on one short side 1C.
Two side plates 4 are arranged. Further, a side plate 5 with a door is arranged on the other short side 1D. The length of each long side of the base 1 is set equal to approximately twice the lateral dimension of the side plate 4, and the length of each short side is set equal to the lateral dimension of each side plate 4, 5.
It is set to be approximately equal to the sum of twice the thickness dimension of . Therefore, when the side plates 4, 4, . . . , and 5 are arranged on each side of the base 1 as described above, each side plate abuts the other adjacent side plate without a gap to form a side wall of a rectangular parallelepiped. Each side plate 4 is
A longitudinally long rectangular main surface 4a, and this main surface 4a.
The side opposite to the main surface 4a of each first joint surface located on the two long sides of the first joint surface 4b and the main surface 4a bent in a direction perpendicular to the main surface from the edge of each of the four sides. and a second joint surface 4c bent inward from the edge at a right angle, and first joint surfaces 4b, 4b at the upper and lower ends of each side plate 4 are provided on the base 1, respectively. Connecting holes 3, 3, . . . that can be aligned with the connecting holes 3, 3, . . . are provided. In addition, the first
A large number of connecting holes 3, 3, ... are also provided at equal intervals on the joint surface 4b and the second joint surface 4c, respectively.
As described above, when the side plates are arranged on the base, the corresponding connecting holes of adjacent side plates can be aligned with each other. The side plate 5 with a door is a frame plate 51 corresponding to the side plate 4 with a window formed on the main surface, and a door 52 for closing the window is attached to the frame plate 51 so as to be openable and closable with a hinge 53. The external dimensions of the side plate 4 are the same as those of the side plate 4, and the first joint surface 51b formed on the four sides and the second joint surface 51c formed on the long side are provided with connecting surfaces in exactly the same way as the side plate 4. Holes 3, 3, . . . are provided. Further, the door 52 has a structure in which the four sides of a rectangular plate are bent into an L-shape like the four sides of the side plate 4 to give it a predetermined thickness, and a handle 54 is attached to a predetermined position on the front surface. There is. Side plate 4, frame plate 51 and door 52 as described above
is manufactured by pressing a thin steel plate.

The side plates 4, 4, ... and the side plate with a door 5 arranged on the base 1 are connected to a connecting bolt provided through the connecting hole 3 of the first joint surface at the lower end of each and the connecting hole 3 of the base 1. It is fixed to the base 1 by a nut screwed onto this bolt, and the adjacent side plates 4, 4 and the side plates 4, 4 disposed at right angles on both sides of the side plates pass through corresponding connecting holes 3. They are connected and integrated by a connecting bolt and a nut screwed onto the bolt.

An upper frame 1' formed in exactly the same manner as the base 1 is placed on the upper ends of the side plates 4, 4, ... and the side plate with door 5 arranged as described above, and Of the connecting holes 3 provided in the lower plate portions 1'a and 1'b, the upper ends of the side plates 4 and 5 correspond to the connecting holes 3 provided in the lower plate portion 1'b. A connecting bolt is provided through the connecting hole 3 of the first joint surfaces 4b and 51b, and the upper frame 1' is fixed to the side plates 4, 5 by this bolt.

The two corners of the upper frame 1' on the door 52 side are each provided with a seat plate 61 that abuts the upper surface of the corner of the upper frame 1', and an inner corner of the seat plate 61 that projects upward. Ceiling mounting seats 6 are arranged, each of which has a connecting hole formed in its seat plate portion 61, and a connecting hole formed in the seat plate portion 61 of the ceiling mounting seat 6, which is formed by deforming and forming a pedestal portion 62. Insert the connecting bolts 7 into both connecting holes by aligning them with the connecting holes 3 provided in a, and screw nuts into each connecting bolt to open the upper corner of the upper frame 1' on the door 52 side. Fixed. A thick washer 63 is welded to the back side of the base plate part 61 of each ceiling mounting seat 6, and the base part 61 and this washer 6 are welded to each other.
A through hole 64 is provided that penetrates through 3. On the other hand, on the upper surface of the two corners of the upper frame 1' opposite to the door 52, there are ceiling mounting seats 8 made of square plates.
are arranged, and each ceiling mounting seat 8 is connected to the ceiling mounting seat 6.
In the same manner as above, connect the upper frame 1' with the connecting bolt 7.
Fixed. A thick washer 83 is welded to the back surface of a portion near the inner corner of each ceiling mounting seat 8, and a through hole 84 passing through the plate-shaped portion of the mounting seat 8 and this washer 83 is provided.

On top of the upper frame 1' are a top plate 91 and a side plate 9.
A ceiling plate 9 is arranged so as to cover the upper frame 1' with a sufficient margin. Eye bolts 10 are inserted into through holes provided at the four corners of the top plate 91 of the ceiling plate 9, and the eye bolts 10 are welded to the top plate 91 in a liquid-tight manner. To cover the top plate 91 on the upper frame 1', the eye bolts 10 are aligned and inserted into the through holes 64 and 84 provided in the mounting seats 6 and 8 of the upper frame, respectively. The top plate 91 is fixed to the upper frame 1' by screwing nuts (not shown) into the lower part. As described above, in this embodiment, since the eye bolts 10 are welded to the top plate 91,
There is no risk of rainwater entering from the eye bolt attachment part. As mentioned above, the pedestal part 62 is attached to the ceiling plate mounting seat 6 fixed to the corner of the upper frame 1' on the door 52 side.
By providing this, the end of the ceiling board 9 on the door 52 side can be installed with an inclination in one direction so that the end on the side opposite to the door 52 is higher, so that rainwater can be prevented from collecting on the ceiling board. can. In the above embodiment, the dimensions of the ceiling plate 9 are determined so that a gap is formed between the side plate 92 of the ceiling plate 9 and the upper frame 1', and the air flow from the ventilation hole 2 of the lower frame 1 is Outside air that has flowed into the enclosure rises inside the enclosure and flows out to the outside through the ventilation hole 2 of the upper frame 1' and the gap between the side plate 92 of the ceiling panel 9 and the upper frame 1'. .

The enclosure configured as above houses switchgear such as circuit breakers, transformers, instruments, and other power distribution equipment to complete a closed power distribution board. Connection hole 3 provided on the joint surface of
It can be attached to a mounting base 11 or a support metal fitting 12 fixed to the side plate 4 or base 1 using the following.

In assembling the enclosure of the closed switchboard, first fix the side plate 5 with a door to the short side 1D of the base 1, then fix the side plate 4 to the long side 1A, 1B and the short side 1C, and assemble the side plate. 4, 4 and the side plates 4 and 5 are connected together. An upper frame 1' is fixed to the upper ends of the rear side plates 4 and 5, and a ceiling plate 9 is further fixed to the upper frame 1' to complete the enclosure.
Thereafter, the mounting base 11 and the support fittings 12 are attached using the unused connecting holes 3 of the base 1 and the side plate 4, and necessary equipment is fixed thereto. In this case, if a large number of connecting holes 3 are provided in the mounting base 11 and the support metal fitting 12 as well, the equipment can be easily installed without requiring drilling.

In the above embodiment, the strength of each part is set so that the entire structure can be suspended by the eye bolts 10 with the equipment housed inside the housing, and the completed closed switchboard with the equipment housed inside the housing can be used as is. It is designed to be easily transported.

In the above embodiment, the side plate 5 with a door is placed on the short side of the base, but since the side plates 4 and 5 have the same dimensions, it is possible to replace one of the other side plates 4 with the side plate 5 with a door. The position of the inspection door can be easily changed.

As described above, according to the present invention, side plates of the same external dimensions are arranged side by side on a frame-shaped base, and the side plates and the base are connected with bolts to constitute the side walls of the enclosure, Furthermore, since the ceiling plate is bolted to the upper end of the side plate via the upper frame, there is no need for a three-dimensional frame as in the past, and the amount of steel sections and welding locations can be significantly reduced. In addition, since the housing is assembled using bolts, it is easy to assemble.
When installing in a location with a narrow entrance, the enclosure can be easily assembled at the installation site. Furthermore, each side plate has the same external dimensions, and the base and upper frame have the same size and shape, so the number of component parts can be reduced, which in turn reduces the amount of section steel used and the number of welded parts. Therefore, it is possible to provide a lightweight and inexpensive closed switchboard.

In particular, in this invention, since the external dimensions of each side plate are the same, the position of the side plate with the door can be changed freely, which has the advantage of having a very high degree of freedom in design, and also allows for easy assembly. There is an advantage.

[Brief explanation of the drawing]

The drawing is an exploded perspective view showing a housing portion of an embodiment of the present invention. 1... Base, 1'... Upper frame body, 3... Connection hole, 4... Side plate, 5... Side plate with door, 9... Ceiling plate.

Claims (1)

[Scope of utility model registration request] In a closed switchboard in which power distribution equipment is housed in a housing, the housing includes a frame-shaped base and outer diameters arranged vertically on each side of the base to form side walls of the housing. a plurality of side plates having the same dimensions; an upper frame having the same dimensions and shape as the base disposed at the upper ends of the plurality of side plates arranged side by side; and a ceiling plate fixed to the upper end of the upper frame; Equipped with
The plurality of side plates include a side plate with a door, and each side plate is connected to another adjacent side plate,
A closed power distribution board, characterized in that it is assembled by being connected to the base and the upper frame by connecting bolts, respectively.