JPH0223047Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an electrical equipment storage unit that is installed in a closed switchboard and movably supports electrical equipment having wheels, and particularly relates to its mounting structure.

"Prior Art" In general, the storage format for storing high-voltage electrical equipment constituted by power switchgear such as high-voltage circuit breakers and high-voltage magnetic contactors inside a high-voltage closed switchboard is as follows:
The draw-out type is widely used because it allows easy maintenance and inspection of electrical equipment and allows a disconnection mechanism to be provided between the bus bar and the electrical equipment.

FIG. 2 is a schematic diagram showing the structure of a conventional closed switchboard of this type. In this figure, 1... are three sets of main busbars that run horizontally through the switchboard, 2a..., 2
b... is a branch bus line, and branch bus lines 2a..., 2b...
are connected to respective input side (power supply side) disconnection section contacts 6, 6 of electrical equipment 5, 5 via disconnection section conductors 4, 4 supported by insulating members 3, 3, respectively,
Further, the output side (load side) disconnection section contacts 7, 7 of the electrical devices 5, 5 are respectively connected to cables 8, 8 extending to the load via the disconnection section conductors 4, 4. Further, the electric devices 5, 5 each have four wheels 15, 15..., and are movable horizontally within storage chambers 16, 16 formed by grounded metal partition walls. There is. Note that numerals 18 and 18 are front doors.

In such a configuration, when performing maintenance inspection work on the electrical equipment 5, the power switchgear (breaker) of the electrical equipment 5 is opened, and then the electrical equipment 5 is opened.
By pulling out from the connection position shown in the figure to the disconnection position shown by the dashed-dotted line, the disconnection part conductors 4, 4 and the disconnection part contacts 6, 7 are brought into a disconnection state. After completely disconnecting the electrical equipment 5 from the main bus 1, maintenance and inspection work on the electrical equipment 5 is performed.

Here, an electrical equipment housing unit 20 as shown in FIG. 3 has conventionally been installed inside the closed switchboard described above. This electrical equipment storage unit 20 includes rails 21, 21 each having a U-shaped cross section for guiding the wheels 15, 15, . . . of the electrical equipment 5, and these rails 2.
Frames 22, 22 that connect 1, 21 to each other
Attachment holes 22a, 22a, . . . are formed at both ends of each frame body 22, 22, respectively.
These mounting holes 22a, 22a, . . . are for fixing the electrical equipment storage unit 20 to the installation surface (bottom surface) inside the storage chamber 16 by tightening bolts.

"Problems to be Solved by the Invention" By the way, the above-described conventional electrical equipment storage unit 20 is manufactured in accordance with the electrical equipment 5 at a manufacturing factory, and is mounted on the installation surface of the storage chamber 16 of a closed switchboard installed in advance. It is tightened and fixed with four bolts on the top. However, the mounting surface of the storage chamber 16 and the lower surfaces of the frames 22, 22 of the electrical equipment storage unit 20 may not match and do not come into close contact with each other. 21,2
1 will be distorted. As a result, rail 21,
21 and the four wheels 15, 15... of the electrical equipment 5, the electrical equipment 5 may vibrate in the connection position or the disconnection position, or the electrical equipment 5 may vibrate in the connection position or the disconnection position, or the disconnection part conductors 4, 4 may come into contact with the disconnection part. There was a problem in that poor contact occurred between the terminals 6 and 7.

This invention was made in view of the above-mentioned circumstances, and aims to provide a mounting structure for an electrical equipment storage unit that does not cause distortion even when it does not come into close contact with the installation surface of a closed switchboard.

``Means for Solving the Problems'' This invention is a mounting structure for an electrical equipment storage unit that is installed in a closed switchboard and supports electrical equipment with wheels so that it can be pulled out and pushed in. In addition to forming a rail portion for guiding the wheels, substantially U-shaped through holes are formed at predetermined locations in the thin plate, and mounting bolts are attached to each movable piece surrounded by each of these through holes. It is characterized by each having a bolt hole through which it is inserted.

"Operation" When the mounting bolts are inserted into each bolt hole and tightened, each movable piece is bent according to the installation surface in the closed switchboard, so no distortion occurs in the rail section.

"Embodiments" Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of this invention. In this figure, 25a, 25a are rail parts formed by bending both sides of a thin plate 25 made of a steel plate, and guide the wheels 15, 15... (see Fig. 2) of the electrical equipment 5. It is. Further, approximately U-shaped through holes 25b, 25b... are formed at four locations in the thin plate 25, and each movable piece 25c, 25c... surrounded by each of these through holes 25b, 25b... Bolt holes 25d, 25d, . . . into which mounting bolts are inserted are formed, respectively. The through holes 25b, 25b... and the bolt holes 25d, 25d... are formed by press working.

In the above configuration, each bolt hole 25d, 25
When the mounting bolts are inserted into d... and tightened and fixed to the installation surface in the closed switchboard, each movable piece 25c, 25c... will bend according to this installation surface, so
No distortion occurs in the rail portions 25a, 25a.

"Effects of the invention" As explained above, according to this invention, in the mounting structure of an electrical equipment storage unit that is installed in a closed switchboard and supports electrical equipment with wheels so that it can be pulled out and pushed in, both sides of the thin plate is bent to form a rail portion that guides the wheels, and approximately U-shaped through holes are formed at predetermined locations in the thin plate, and attached to each movable piece surrounded by each of these through holes. Since each bolt hole is formed through which the mounting bolt is inserted, when the mounting bolt is inserted into each bolt hole and tightened, even if the lower surface of the thin plate does not come into close contact with the installation surface of the closed switchboard, the mounting bolt will be inserted into each bolt hole. Since each movable piece is bent, the rail portion is not distorted, and therefore, it is possible to prevent vibrations and poor contact in the electrical equipment.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the structure of an embodiment of this invention, Fig. 2 is a schematic view showing the structure of a conventional closed switchboard, and Fig. 3 is a perspective view showing the structure of a conventional electrical equipment storage unit. . 25...Thin plate, 25a...Rail part, 25b...
...Through hole, 25c...Movable piece, 25d...Bolt hole.

Claims (1)

[Scope of utility model registration request] In the mounting structure of an electrical equipment storage unit that is installed in a closed switchboard and supports electrical equipment having wheels so that it can be freely pulled out and pushed in, both sides of a thin plate are bent to form a rail part that guides the wheels, and the thin plate is A substantially U-shaped through hole is formed at a plurality of predetermined locations, and each movable piece surrounded by these through holes has a bolt hole through which a mounting bolt is inserted. Mounting structure of electrical equipment storage unit.