JPH10313509A - Switchboard and its assembly method - Google Patents

Abstract

(57) [Summary] An object of the present invention is to perform adjustment work at the time of assembling a switchboard,
It is to eliminate work at height and improve workability and safety. A column is changed from a conventional welding structure to an assembling structure so that a built-in device can be incorporated in a direction perpendicular to a floor surface in a state where a switchboard is turned sideways. In order to eliminate the work of adjusting the mounting position of the built-in device, the floor surface is used as the dimensional reference surface of the mounting position, so that the adjusting work after the built-in device is installed becomes unnecessary. Also, when designing individual components, those that have a connection with other built-in components after being assembled require positional accuracy. Therefore, dimensions such as mounting holes and bending are standardized from the floor side. According to the present invention, adjustment work at the time of assembling a switchboard,
Elimination of work at heights can improve workability and safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard of a substation facility and a method of assembling the same.

[0002]

2. Description of the Related Art In a conventional method of assembling a switchboard, a built-in device such as a circuit breaker cradle and a transformer unit for a meter is mounted on a front side or a back side of a welded frame placed in a normal use state (vertical installation). It was slid more horizontally and housed in a frame to connect and assemble the conductors, and to carry out mounting and positioning work when the equipment was housed.

[0003]

In the above prior art,
First, align the center of the circuit breaker cradle with an imaginary position, that is, the center in the width direction of the switchboard, and position the circuit breaker cradle. Since the connection has been made, adjustment work in the left-right direction occurs, and there has been a problem that work efficiency is reduced. In addition, since the built-in equipment is stored in the housing in the normal use state (vertical installation), the equipment installed on the top of the switchboard must be worked at a high place, and in some cases it is necessary to climb the ceiling and work. Therefore, the workability is reduced, and it is not desirable from the viewpoint of safety.

[0004]

Means for Solving the Problems To solve this problem, an assembly work conventionally performed in a normal use state (vertical installation) is turned over to reduce the height at the time of the assembly work. In addition, the mounting positions of the main built-in equipment have all been unified based on the floor surface. In addition, built-in equipment at the time of sideways assembling will be mounted vertically instead of the conventional horizontal direction, and columns will not be able to be stored because the pillars will interfere with the welded housing,
The pillars have an assembling structure so that the built-in equipment can be attached after storage.

[0005] As a result, since the switchboard is turned over and built-in equipment can be incorporated, work can be performed at a low position even when a heavy object is mounted. Further, since all the mounting positioning of the main built-in devices is based on the floor surface, the positioning adjustment work becomes unnecessary.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIG.
This will be described below.

FIGS. 1 to 5 show an assembling procedure in a case where a side-by-side assembling method is applied to a high-voltage two-stage switchboard.

The right pillars 1a, 1b, 1c, 1d and 1e of the switchboard which are bent in a U-shape on the floor 10 are arranged perpendicularly to the depth direction of the switchboard. The left column 1f and the left column 1j of the switchboard are fixed to form a housing (FIG. 1). First, the lower circuit breaker cradle 2a and the upper circuit breaker cradle 2b are lowered from above in the vertical direction with respect to the floor, and the right pillars 1a, 1b, 1
The lower circuit breaker cradle 2a and the upper circuit breaker cradle 2b are brought into contact with the position c, and are positioned and attached to predetermined mounting holes that have been opened in advance (FIG. 2). Next, left column 1g, 1h
After installing the transformer, the upper instrument transformer unit 3
a, The busbar unit 4 is also lowered vertically from above with respect to the floor surface, is positioned against the right pillar 1c and the floor surface 10, and is mounted in a predetermined mounting hole previously drilled (FIG. 3). Next, after the left column 1i is attached, the lower instrument transformer unit 3b is lowered from above in the vertical direction with respect to the floor, positioned against the right column 1d, and attached to a predetermined mounting hole previously opened ( (Fig. 4). Finally,
The upper-stage conductor 5a is connected to the upper-stage instrument transformer unit 3a, and the lower-stage conductor 5b is connected to the lower-stage instrument transformer unit 3b, and the barrier 6 is attached (FIG. 5). here,
The upper-stage instrument transformer unit 3a and the lower-stage instrument transformer unit 3b are previously provided with the upper-stage conductor 5a and the lower-stage conductor 5 in advance.
There is no problem even if the one connected to b is attached. Further, a lower circuit breaker cradle 2a, an upper circuit breaker cradle 2b,
In the upper instrument transformer unit 3a and the lower instrument transformer unit 3b, the surfaces that contact the right columns 1a to 1e are the floor 10
When the parts are designed, there is a need for positional accuracy for parts that have a connection with other built-in parts after assembly. Therefore, the dimensions of the mounting holes, bending, etc. are set to the right columns 1a to 1e. Dimensional accuracy can be secured by unifying from the application side.

FIG. 6 shows a process in the course of assembling the apparatus in a horizontal position. When all the columns 1 are attached to the ceiling plate 7 and the floor plate 8 during the side-by-side assembly, the lower circuit breaker cradle 2a, the upper circuit breaker cradle 2b, and the upper instrument transformer unit 3a are
Left column 1 when it is lowered vertically from above
Since d, 1e, and 1f obstruct and cannot be attached, the lower breaker cradle 2a and the upper breaker cradle 2b are attached to the right pillars 1a, 1b, and 1c without attaching the left pillars 1d, 1e, and 1f. Then, the left pillars 1d and 1e are attached to the ceiling plate 7, the floor plate 8, the lower breaker cradle 2a, and the upper breaker cradle 2b. Next, the upper-stage instrument transformer unit 3a is vertically lowered from the upper side to the floor surface 10 at predetermined positions of the attached left-side column 1h and right-side column 1c, and is positioned and fixed to the right-side column 1c. Further, the left pillar 1i is fixed at a predetermined position on the ceiling plate 7 and the floor plate 8, and the remaining built-in devices are attached in the same manner. Here, the mounting work of the left pillars 1g, 1h, 1i is performed by the ceiling plate 7,
The floor plate 8 and other built-in objects are in the way, and the left pillar 1g, 1
The U-shaped pillars were mounted opposite to the left pillars 1f and 1j so that it was difficult to work from the lower side of h and 1i, and the work was performed from above in consideration of workability.

FIG. 7 shows a conventional assembly configuration diagram. A lower circuit breaker cradle 2a and an upper circuit breaker cradle 2b are inserted parallel to the floor surface from the front side into a housing in which the column 1 is welded to the ceiling plate 7 and the floor plate 8, and the center position in the width direction of the frame body ( Adjust and fix the mounting position to match the (fictitious position). From the back side, the upper-stage instrument transformer unit 3a, the lower-stage instrument transformer unit 3b, and the like are inserted horizontally with respect to the floor surface, and the terminals of the circuit breaker cradle 3 inserted from the front side first are connected to the terminals. It is mounted in a mounting hole that has been previously drilled in the housing while adjusting the mounting position so that it can be connected with a conductor. In addition, the upper instrument transformer unit 3a, the upper circuit breaker cradle 2b, etc. are heavy and must be lifted to a high position. This leads to a decrease in work efficiency and a danger to workers.

[0011]

As described above, according to the present invention, the structure in which the switchboard can be assembled with the switchboard turned over can be used. In contrast to the work performed at high places on the ceiling, the work position can be considerably lowered, so that the danger and burden on the worker are reduced. In addition, since the reference surface for the mounting position of the built-in device is unified with the floor surface, the mounting operation is not required, as opposed to the mounting position adjustment operation in the conventional method.
Therefore, application of the present assembling structure has effects such as an improvement in assembling work efficiency and an improvement in safety for workers.

[Brief description of the drawings]

FIG. 1 is an assembly configuration diagram when the present invention is applied to a high-voltage two-stage switchboard.

FIG. 2 is an assembly configuration diagram when the present invention is applied to a high-voltage two-stage switchboard.

FIG. 3 is an assembly configuration diagram when the present invention is applied to a high-voltage two-stage switchboard.

FIG. 4 is an assembly configuration diagram when the present invention is applied to a high-voltage two-stage switchboard.

FIG. 5 is an assembly configuration diagram when the present invention is applied to a high-voltage two-stage switchboard.

FIG. 6 is a configuration diagram when assembly is completed in a case where the present invention is applied to a high-voltage two-stage switchboard.

FIG. 7 is an assembly configuration diagram of a conventional high-voltage two-stage switchboard.

[Explanation of symbols]

1 ... pillar, 1a, 1b, 1c, 1d, 1e ... right pillar, 1
f, 1g, 1h, 1i, 1j: left pillar, 2: circuit breaker cradle, 2a: lower circuit breaker cradle, 2b: upper circuit breaker cradle, 3: instrument transformer unit, 3a: upper instrument transformer unit, 3b: transformer unit for lower instrument, 4: bus conductor, 5: conductor, 5a: upper conductor, 5b
... Lower side conductor, 6 ... Barrier, 7 ... Ceiling board, 8 ... Floor board, 9
... back plate, 10 ... floor surface.

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[Procedure amendment]

[Submission date] June 9, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Conventionally, a method of assembling a switchboard is such that a built-in device such as a circuit breaker cradle, a transformer unit for an instrument, or the like is mounted on a front side or a back side in a welded housing placed in a normal use state (vertical installation). during more horizontally sliding housed in a casing connected and assembly was carried out equipment mounting conductor had done mounting positioning operation.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

FIG. 7 shows a conventional assembly configuration diagram. Ceiling board 7, parallel to the lower breaker cradle 2a to the floor surface from the front side to the housing posts 1 are welded to the floor plate 8, the width direction of the center position of the insert the upper breaker cradle 2b housing ( Adjust and fix the mounting position to match the (fictitious position). From the back side, the upper-stage instrument transformer unit 3a, the lower-stage instrument transformer unit 3b, and the like are inserted horizontally with respect to the floor surface, and the terminals of the circuit breaker cradle 3 inserted from the front side first are connected to the terminals. It is mounted in a mounting hole that has been previously drilled in the housing while adjusting the mounting position so that it can be connected with a conductor. In addition, the upper instrument transformer unit 3a, the upper circuit breaker cradle 2b, etc. are heavy and must be lifted to a high position. This leads to a decrease in work efficiency and a danger to workers.

Claims (3)

[Claims] A front plate having an entrance and a back plate are disposed opposite to each other in the depth direction, and a plurality of pillars are provided between the front surface and the back plate in a direction perpendicular to the depth direction. The cradle and other built-in equipment are fixed to the mounting holes provided in each pillar part in the distribution box where the back plate, ceiling plate and bottom plate are mounted on the pillar part of A switchboard characterized by standardizing on a standard. 2. A front plate having an entrance and a back plate facing the depth direction. A plurality of pillars are provided between the front plate and the back plate in a direction perpendicular to the depth direction. A method of assembling a switchboard in which a cradle and other built-in devices are fixed to mounting holes provided in each pillar portion in a switchboard in which a back plate, a ceiling plate, and a bottom plate are mounted on pillar portions of the switchboard. The pillars, floor panel, and ceiling panel that make up the body are assembled into a structure. At the time of assembly, all columns on the right side when viewed from the front side are laid down on the floor and placed on the floor. A method for assembling a switchboard, comprising: forming a housing on which a front pillar and a rear pillar on the left side are mounted; 3. The method of assembling a switchboard according to claim 2, wherein the mounting position of the built-in equipment at the time of the side-by-side assembly is assembled with reference to the floor surface.