JPH08138504A - Metal enclosed switch gear - Google Patents

Abstract

PURPOSE: To safely store or extract a mobile electric apparatus regardless of the opening position of a door and move it to a place having a sufficient inspection space without moving and installing an extraction extension rail from another place for storing or extracting the mobile electric apparatus. CONSTITUTION: A door 16 openable to the outside and removable when opened is fitted at the lower section of the front side of a box body 18 opened at the front. Wheels 21 for moving the door 16 after it is removed are fitted on the front side of the door 16. An extraction extension rail 20 for storing or extracting a mobile electric apparatus 2 stored in the box body 18 is fitted on the box body 18 side of the door 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal closed switchgear installed in a substation.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a conventional metal-closed switchgear, in which (A) is a side view showing a state where a mobile electric device is housed in a box, and (B) is a mobile electric device. It is a side view which shows the state which pulled out from the box body. In the figure, a door 6 is attached by a hinge 7 to a side surface on the front surface side of a box body 8 which is fixed to a base base 4 and whose front surface is open. The handle 5 is attached to the door 6, and the door 6 is opened and closed by operating the handle 5. A mobile electric device 2 such as a transformer housed in or drawn out of the box body 8 is connected to the main circuit conductor 1 arranged in the box body 8 while being housed in the box body 8. The drawer extension rail 10 to which the support 9 is attached is used when housing or drawing out the mobile electric device 2 in the box body 8, and is usually stored in another place.

In the conventional metal-closed switchgear described above, in the housed state of the mobile electric device 2 shown in FIG. 3A, the mobile electric device 2 is connected to the main circuit conductor 1 to close the main circuit. Is in a state. When performing maintenance and inspection work of the mobile electric device 2, the handle 5 is operated to open the door 6. Next, the drawer extension rail 10 is installed on the front side of the box body 8, the connection between the mobile electric device 2 and the main circuit conductor 1 is disconnected, and then the mobile electric device 2 is pulled out from the box body 8. In the pulled-out state of the mobile electric device 2 shown in FIG. 3B, necessary maintenance and inspection work of the mobile electric device 2 is performed. After the work is completed, the mobile electric device 2 is housed in the box body 8 by performing the reverse operation to the above-mentioned drawing operation.

[0004]

In the conventional metal-closed switchgear described above, the extension rail 10 for pulling out the mobile electric device 2 is used only during maintenance and inspection work of the mobile electric device 2. , Normally, another storage area is required.

Further, when the mobile electric device 2 is stored or pulled out, the door 6 hits the operator's body, the work is difficult and dangerous, and the inspection space is insufficient. I can't work. Therefore, the present invention eliminates the need to move and install the drawer extension rail when storing or pulling out the mobile electric device, and can safely store or pull out regardless of the position where the door is opened. The purpose is to enable mobile electric equipment to be moved to a place with sufficient inspection space.

[0006]

In the metal-closed switchgear of the present invention, a door which can be opened / closed outside and which can be removed when opened is attached to the lower part of the front side of the box whose front surface is open. The wheels to be moved after removing the door are attached to the front side of the door. An extension rail for accommodating or withdrawing the mobile electric device accommodated in the box is attached to the box side of the door.

[0007]

In the metal closed type switchgear of the present invention, when the door is opened, the drawer extension rail is installed on the front side of the box body, so that the mobile electric device can be easily accommodated or withdrawn. In addition, the door does not get in the way when storing or drawing out the mobile electric device. Further, when inspecting the mobile electric device, after removing the door, the door on which the mobile electric device is placed can be moved to a wide place by the wheels for inspection.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a metal switchgear according to the present invention. (A) is a side view of a mobile electric device in a housed state, (B) is a drawn-out state of the mobile electric device. FIG. 2 is a side view showing a state in which the mobile electric device is pulled out and then moved to another place. In these figures, a door 16 is attached to a lower part of the front side of a box body 18 having an opened front surface by a hinge 17 so as to be openable and closable outside, and is removed from the box body 18 when the door 16 is opened. Formed possible. In addition, the handle 15 is provided above the door 16.
Is attached, and by operating the handle 15, the door 16 is rotated around the hinge 17 to be opened and closed. Further, a drawer extension rail 20 is attached to the inside of the box body 18 of the door 16, and a support 19 provided with wheels 21 is attached to the front surface side so as to be rotatable with respect to the door 16.
When the door 16 is closed, it is stored in the door 16, and when the door 16 is opened, the support 19 is rotated to bring the wheel 21 into contact with the floor surface and the drawer extension rail 20 to move the mobile electric device. It is formed so that it can be pulled out.

Next, the operation of the metal-closed switchgear of the present invention will be described. In the metal closed switchgear of the present invention described above, in the housed state of the mobile electric device 2 shown in FIG. 1 (A), the mobile electric device 2 is connected to the main circuit conductor 1 so that the main circuit is closed. is there. When performing maintenance and inspection work on the mobile electric device 2, the support 19 is pivoted clockwise to protrude from the door 16 and then fixed. Next, when the door 16 is opened by the handle 15, the door 16 rotates counterclockwise around the hinge 17, the wheels 21 come into contact with the floor surface, and the drawer extension rails 20 move. The device 2 can be pulled out.

Next, after disconnecting the connection between the mobile electric device 2 and the main circuit conductor 1, the mobile electric device 2 is pulled out from the inside of the box body 18 and placed on the pull-out extension rail 20. The drawing-out state of the mobile electric device 2 is shown in FIG. next,
With the hinge 17 removed from the box body 18 and the movable electric device 2 pulled out on the extension rail 20, the wheels 21 are moved on the floor surface, and maintenance work of the movable electric device 2 can be sufficiently performed. Move to a place with space and perform necessary maintenance and inspection work for the mobile electric device 2. This state is shown in Figure 2.
Shown in After the work is completed, the operation opposite to the above-described drawing operation is performed to store the mobile electric device 2 in the box 18.

[0011]

As is apparent from the above description, according to the present invention, it is not necessary to move and install the drawer extension rail from another place, and the movable electric device can be drawn out only by opening the door. Therefore, the space for storing the drawer extension rail can be omitted, and the mobile electronic device can be moved to a place where there is sufficient space for inspection. Also, the operator's body will not hit the door during the withdrawal work,
You can work safely.

[Brief description of drawings]

1A and 1B show an embodiment of the present invention, in which FIG. 1A is a side view of a state in which a mobile electric device is stored, and FIG.

FIG. 2 shows an embodiment of the present invention and is a side view of a state in which the mobile electric device is pulled out and then moved to another place.

3A and 3B show a conventional example, in which FIG. 3A is a side view showing a state where a mobile electric device is housed, and FIG.

[Explanation of symbols]

 1 Main Circuit Conductor 2 Mobile Electric Equipment 4 Foundation Base 10 Drawer Extension Rail 15 Handle 16 Door 17 Hinges 18 Box Body 19 Support 20 Drawer Extension Rail 21 Wheels

Claims (1)

[Claims] 1. A door, which is openable and closable outside and detachable when opened, is attached to a lower part of a front side of a box body having an open front side, and wheels to be moved after the door is removed are attached to a front side of the door. Attachment: A metal-closed switchgear in which a drawer extension rail for accommodating or withdrawing a mobile electric device housed in the box body is mounted on the box body side of the door.