JPH07212925A - Frame of power distribution panel - Google Patents

Abstract

PURPOSE:To provide a frame for a power distribution panel made by welding capable of reducing the number of parts and welding length, improving working accuracy for positioning and dimensional determination, increasing strength and reducing weight by skeleton framing and improving the works environment for frame production. CONSTITUTION:A skeleton structure of vertical posts 2, and intermediate posts 8, 9 and 10 each having a channel section, a ceiling plate 3 and a floor plate 4 are combined together; a bend portion of the floor plate along the side wall is made larger; vertical posts 2, ceiling plate 3 and floor plate 4 are welded by three-axis fitting; and the intermediate posts 8, 9 and 10 are welded to the ceiling plate 3 and floor plate 4 at the top and bottom of these posts, thereby forming a frame for the power distribution panel. By doing this, welding is performed for vertical posts and the top and bottom plates in various directions, so that thinner and lighter plates and posts can be utilized, and a dimensional accuracy of the members directly becomes the dimensional accuracy of the three-dimensional body of the frame, thereby reducing the welding length, improving the welding and painting works and contribution to mass production.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure for accommodating heavy items of high-voltage main circuit equipment in a switchboard such as a substation, and more particularly to a mass-produced switchboard frame which is a welded frame.

[0002]

2. Description of the Related Art Among switchboards, closed type switchboards that house high-voltage main circuit equipment are large in size and heavy in weight, and the main circuit conductors and busbars are placed inside the switchboard, which increases safety and accidents. In order to prevent this, various partition walls are required, and the internal partition is welded to the stress jacket structure mainly composed of steel plate. FIG. 3 shows the overall structure of a conventional switchboard frame of this type.

[0003]

In the above-mentioned conventional switchboard frame, it is necessary to make the structure according to the specifications each time such as the arrangement of devices in the switchboard and the partition walls, and the absolute value of the welding length becomes large. There was a problem that a lot of work to remove the distortion would occur.

Since the frame has a plate-like structure recently, it is necessary to give special consideration to earthquake resistance and mechanical strength. In addition, since there are many bulkheads in the switchboard, the can-making worker must dig into the switchboard for welding, and the painters of the switchboard must also dig into the switchboard for painting and the work environment is extremely low. It was in a bad condition.

Furthermore, the structure of the frame of the switchboard is complicated due to the large number of parts, and it is very difficult for an operator engaged in the production not only to create a drawing but also to disconnect it.

The present invention has been made in view of the above circumstances, and it is possible to reduce the number of parts and welding length, improve working accuracy such as positioning and dimensioning, improve strength and reduce weight by framing, and perform frame manufacturing work. It is an object of the present invention to provide a switchboard frame having a welded structure for improving the environment.

[0007]

DISCLOSURE OF THE INVENTION In a switchboard frame of the present invention, a vertical column having a groove-shaped cross section is used as a skeleton, and a ceiling plate and a floor plate are welded to the skeleton to form a cube, and electrical equipment is housed inside. In a switchboard frame configured to do, the upper and lower ends of the groove-shaped pillars arranged at the four corners of the frame are abutted against the corners of the ceiling plate and the floor plate with box-shaped bent portions formed on each side. A fitting portion is formed at the ends of the box-shaped bent portion of the ceiling plate and the floor plate so that the width-direction bent portion is larger than the depth-direction bent portion, and the fitting portion and the upper and lower end portions of the grooved pillar are formed. Is welded in three axial directions, and a U-shaped cross section is formed, and a plurality of intermediate vertical columns having a plurality of square holes in the vertical direction are attached in the front-rear direction of the frame, and the inside of the frame is re-formed by welding. It is characterized in that there is no partition wall.

Further, the distribution board frame of the present invention is cut to form stepped portions at the upper and lower ends of the intermediate vertical column so that the upper and lower ends of the intermediate vertical column are welded only to the ends of the ceiling plate and the floor plate. It is characterized in that a notch is provided.

Further, in the switchboard frame of the present invention, a large number of square holes into which fitting nuts and the like can be inserted are bored in the box-shaped pillars, the intermediate vertical pillars, and the box-shaped bent portions of the ceiling plate and the floor plate. The square holes are characterized by being shifted by 45 ° at appropriate intervals.

Further, the switchboard frame assembly of the present invention is characterized in that a plurality of switchboard frames are joined in the width direction thereof.

[0011]

In the switchboard frame having the above-described structure, vertical columns having a sectional shape in which rectangular even parts are cut out are fitted to the four corners of the ceiling and floor members to form squareness and self-supporting strength, and the external dimensions are determined. To be done. In this case, since the vertical column is welded in the shape of a prism that is wide in the width direction, the vibrations with respect to upper and lower loads, particularly left and right loads are greatly reduced, and the degree of deformation is also extremely small.

Since the intermediate column is provided in the intermediate portion of the vertical column and is welded in a parallel shape at a position relatively distant from the end, it is a member having strength against vertical load as well as right angle and horizontal swing. To be done.

Since a large number of square holes are provided in both the vertical column and the intermediate column, members such as partition walls and metal fittings can be freely attached.

[0014]

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

FIGS. 1 and 2 and FIGS. 4 to 7 show an embodiment of a switchboard frame according to the present invention. In these drawings, the switchboard frame 1 is configured by combining a vertical column having a groove-shaped cross section, which will be described later, as a bone structure, and a face structure having upper and lower ceiling plates and floor plates. Reference numeral 2 is a vertical column that constitutes the four corners of the frame, and is a groove column having a cross-sectional shape in which a rectangular even part is cut out.

Although not shown, the inner bent portion of the vertical column 2 is provided with perforated holes for ordering various mountings in the panel. A ceiling plate 3 and a floor plate 4 are provided so as to correspond to the size of the vertical column 2, and the four corners of these are formed by a flat portion 5, a side surface portion 6, and end surface portions 7a and 7b by notching and bending. There is. In this case, since the bent portion L2 corresponding to the end surface portion 7a is made about three times wider than the bent portion L1 corresponding to the end surface portion 7b, the vertical column 2 or the intermediate column 8 is located at a portion having a large cross-section coefficient in the width direction W of the frame. , 9 and 10 are welded, and the strength in the width direction of the frame is greatly strengthened.

Further, the vertical column 2 is provided with a flat surface portion 5 which is the contact surface.
By fitting the side surface portion 6 and the end surface portions 7a and 7b,
The board width, height and depth of the switchboard frame are regulated by each member of the ceiling plate 3, the floor plate 4 and the vertical column 2 which form the frame, and the mounting positions of other members are automatically determined.

When welding and assembling the switchboard frame 1,
The vertical pillar 2 is fitted to the ceiling plate 3 and the floor plate 4 which are regulated by cutting, bending, etc., and the flat surface portion 5, the side surface portion 6, which is the contact surface,
By welding the end surface portions 7a and 7b, a frame having a simple shape and good working accuracy can be completed.

The contact surfaces 5, 6, 7a, 7b are x
Since the structure is such that welding can be performed in the three directions of the axis, the y axis, and the z axis, not only the width direction of the frame described above but also the squareness and strength are strengthened.

Next, intermediate vertical columns 8, 9 and 10 are provided at arbitrary positions at intermediate portions in the front-rear direction of the vertical columns 2 at the four corners (FIG. 1). The positions of the intermediate vertical columns 8, 9, 10 and the like are determined to be standard positions in view of the configuration of the switchboard, and are common so as not to be changed every time different specifications are specified.

When the partition wall 11 or the like which is welded to the conventional switchboard frame is provided, the partition wall 11 and the intermediate vertical columns 8 and 9 are provided.
It may be mounted between and by a fitting nut or the like described later. As shown in detail in FIG. 5, these intermediate vertical columns 8, 9, 10 and the like have a groove shape having a U-shaped cross section, and square holes 12 are regularly bored at a standard pitch P in the bent portion. Has been done.

In the present embodiment, the L dimension determined from a certain reference position, for example, the square hole 12 and the square hole 13 whose angle is shifted by 45 degrees are drilled at a position of 500 mm = 50 P × 10. It is easy to know the dimensions without having to measure the dimensions on a scale. The square holes 12 and 13 are also provided in the box-shaped bent portions of the vertical column 2, the ceiling plate 3 and the floor plate 4.

Further, notches 14 are provided at the upper and lower ends of the intermediate vertical columns 8, 9, 10 etc. so as to form a step. When the notch 14 is welded to the ceiling plate 3 and the floor plate 4, only the parts a and b need to be welded, the thermal deformation is small, the required strength in the vertical direction can be sufficiently secured, and the welding length at the part a is small. In addition to being able to do so, ceiling board 3 and floor board 4
Since it does not come into contact with the bent portion, no extra notch is required, and the shape is simple and the workability is improved. The intermediate pillar does not necessarily have to be a vertical pillar, and if it is at a common position, it can be achieved even if it is laterally arranged.

Next, FIG. 4 shows a plan view and FIG. 7 shows a front view when a plurality of switchboard frames are joined in a row. As can be seen from FIG. 4, the dimension of the bent portion is L2> L1 in the case of one surface, but becomes 2 × L2> L1 in the case of the row board, and the strength in the width direction of the switchboard frame is further increased by the row board. To be strengthened.

Further, in FIG. 7, a partition 17 located in the middle of the row board is provided on only one side, but the vertical column 2 and the intermediate column 8,
9, 10 and the horizontal pillars 18 maintain the strength, so the partition wall 1
7 may be a very thin plate, and since it is a thin plate, it can be made into a frame which absorbs strain well during welding with the column and has little deformation and good working accuracy.

Therefore, when it is manufactured as a frame box body, the vertical pillars are simply welded to the four corners and the intermediate cutouts in the floor surface body and the ceiling portion for positioning, and the accuracy is good without any particular reinforcement in the frame such as squareness tolerance. Can be manufactured.

In this way, each component of the switchboard frame can be manufactured from a plate-shaped member into a groove column or a face piece, so that the parts can be mass-produced and the size and thickness can be reduced. Becomes

In addition, since the structure of the switchboard frame does not have a partition wall or a frame, it is a welded structure, but it is possible to work easily by slipping into the inside of the frame, and the welding points and welding shapes are constant. Therefore, it is easy to install welding robots.

Further, the partition wall or the like conventionally welded to the inside of the switchboard frame is made to be attachable like a barrier, and moreover, as shown in FIG. 6, by fitting the nut 15 into the square hole 12, one-handed work from one side. Since the work can be performed at, there is an effect that the workability can be improved even when shifting to the assembly work. Moreover, the square holes 13 are arranged at regular intervals as described above.
Since the angle is a square hole which is deviated by 45 degrees, it is possible to improve the assembling property such that the position can be determined visually without using a scale.

According to the present embodiment, the width of the switchboard frame is increased in the width direction, and the channel pillars are brought into contact with the lower surface member to increase the strength in the width direction and in the upper, lower, and direction directions. The welding length can be reduced to 30% and the workability of coating can be halved by changing the welding type from the welding type to the mounting type using square holes.

Furthermore, the reduction of the number of parts and the standardization of standard pillars make it possible to carry out the production of parts and the like, and to direct the mass production including the indirect effect. Moreover, since there are no partition walls or frames inside the frame, the work environment for welding and painting can be greatly improved.

[0032]

As described above, according to the present invention,
It is possible to obtain a switchboard frame having a welded structure in which the number of parts and the welding length are reduced, working accuracy such as positioning and dimensioning is improved, strength and weight are reduced by framing, and the frame manufacturing work environment is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of an embodiment of a switchboard frame according to the present invention.

FIG. 2 is an enlarged perspective view showing a fitting portion between vertical columns and upper and lower face bodies at four corners of the switchboard frame in FIG.

FIG. 3 is a perspective view showing an overall configuration of a conventional switchboard frame.

FIG. 4 is a plan view showing a row board state in which a plurality of switchboard frames according to the present invention are joined together.

5 is an enlarged perspective view showing a fitting portion between the intermediate column and the face piece of the switchboard frame in FIG. 1. FIG.

FIG. 6 is a sectional view showing a mounting state of a frame inner partition wall mounting portion and a fitting nut of the switchboard frame according to the present invention.

FIG. 7 is a front view showing a row board state in which a plurality of switchboard frames according to the present invention are joined together.

[Explanation of symbols]

 1 Distribution Board Frame 2 Vertical Pillar 3 Ceiling Board 4 Floor Board 5 Plane 6 Sides 7a End Face 7b End Face 8 Intermediate Pillar 9 Intermediate Pillar 10 Intermediate Pillar 11 Bulkhead 12 Square Hole 13 Square Hole 14 Notch 15 Fitting Nut 16 Bolt 17 Bulkhead 18 Horizontal column

Claims (4)

[Claims] 1. A power distribution board frame, wherein a vertical column having a groove-shaped cross section is used as a skeleton, and a ceiling plate and a floor plate are welded to the skeleton to form a cube, and an electric device is housed therein. The upper and lower ends of the grooved pillars arranged at the four corners of the box-shaped bent portion of the ceiling plate and the floor plate so as to abut the corners of the ceiling plate and the floor plate with the box-shaped bent portion formed on each side. A fitting portion is formed at the end portion so that the width direction bending portion is larger than the depth direction bending portion, and the fitting portion and the upper and lower end portions of the groove column are welded in the three axial directions, and the cross section is A plurality of intermediate vertical pillars formed in a U shape and having a plurality of square holes in the vertical direction are attached in the front-back direction of the frame, and no partition wall is formed by welding inside the frame. Switchboard frame to do. 2. A cutout portion is formed in the upper and lower end portions of the intermediate vertical column so that the upper and lower end portions of the intermediate vertical column are welded only to the end portions of the ceiling plate and the floor plate. The switchboard frame according to claim 1, wherein: 3. A plurality of square holes into which a fitting nut or the like can be inserted are formed in the box-shaped bent portion and the intermediate vertical column, and the box-shaped bent portions of the ceiling plate and the floor plate, and these square holes are formed. The switchboard frame according to claim 1, wherein the switchboard frame has square holes that are shifted by 45 ° at appropriate intervals. 4. A switchboard frame assembly comprising a plurality of switchboard frames according to claim 1 joined in the width direction.