JP6836967B2 - Equipment inspection device - Google Patents

Description

An embodiment of the present invention relates to an equipment inspection device for pulling out an equipment such as a circuit breaker housed in a closed switchboard and inspecting it.

Electrical equipment such as circuit breakers and so-called combination switches that combine power fuses and magnetic contactors are housed in a closed switchboard called a cubicle in a multi-stage, stacked configuration. When inspecting such electrical equipment, the electrical equipment is pulled out of the panel from the closed switchboard and inspected in the space outside the panel.

Since the electrical equipment is stored in a stacked configuration as described above, the electrical equipment stored in the upper stage is pulled out by using a lifter having a bracket for holding the equipment. In this case, after opening the front door of the closed switchboard, the lifter is moved to a position facing the open surface, and the bracket is moved up and down to align with the storage height of the electrical equipment. After aligning the bracket, pull out the electrical equipment onto the bracket and inspect it on this bracket.

When performing such equipment inspection work, when the closed switchboard is installed outdoors, dust may infiltrate into the panel from the open front depending on the weather, or rainwater may infiltrate in rainy weather. In addition, dust and rainwater adhere to the electrical equipment itself pulled out of the panel.

Such adhesion of dust and rainwater must be prevented because it adversely affects the electrical insulation characteristics inside the closed switchboard and the electrical equipment itself. Further, from the viewpoint of the work environment, the outdoor inspection work in rainy weather imposes a heavy burden on the worker, is practically difficult, and is restricted in the work schedule.

Further, the lifter used for pulling out the equipment needs to be stored and stored in a predetermined place by covering it with a curing sheet after the inspection work. However, the work of putting a large curing sheet on the lifter was troublesome and required a large amount of labor, and the storage work required a lot of time.

Jitsukaisho 57-21204

It is an object of the present invention to provide an equipment inspection device capable of performing inspection work without being affected by the weather and without adhesion of dust or rainwater even in rainy weather, and easily performing storage work after inspection.

In the device inspection device according to the embodiment of the present invention, a bracket for holding the device is configured to be movable up and down in order to position the electric device housed in the closed switchboard to a predetermined pull-out height, and outside the closed switchboard. It is made of a lifter that can be moved to an arbitrary position and a material that is translucent and flexible, and surrounds the lifter except for the portion facing the closed switchboard while maintaining a space for inspection. It has a peripheral surface portion, a ceiling portion that has translucency and covers the space above the space surrounded by the peripheral surface portion, and has an enclosure member that can move together with the lifter. The peripheral surface portion is provided in the horizontal direction. The ceiling portion has a stretchable bellows portion, the upper portion directly above the lifter is made of a hard material, and the peripheral portion immediately above the upper portion is formed of a flexible material. The bellows portion is characterized in that it can be expanded to a state where the space for inspection can be secured at the time of inspection, and can be contracted to a state where the space for inspection is excluded at the time of non-inspection.

According to the above configuration, inspection work can be performed even in rainy weather regardless of the weather, good inspection work can be easily performed without being restricted by the schedule, and further, storage work after inspection can be performed. Can also be easily done.

It is a side view which shows the use state when the equipment inspection apparatus which concerns on one Embodiment of this invention is applied to a closed switchboard. It is a top view of FIG. It is a top view which shows the reduced state at the time of storing the enclosure member shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, 11 is an outdoor installation type closed switchboard, and electrical equipment (circuit breaker in the figure) 12 can be pulled out in a plurality of stages (2 to 4 stages) in a stacked state. It is installed in. Conductors, cables, and other electric appliances (not shown) are installed in this panel. The electric device 12 is configured to be automatically connected to these conductors when it is stored in the panel, and to be disconnected from the conductors by being pulled out of the panel.

As described above, the electric device 12 is configured in a plurality of stages in the closed switchboard 11, and when the electric device 12 housed in the upper stage is pulled out, the bracket 13 for holding the device is used as shown in the figure. The lifter 14 to have is used. The lifter 14 has a support column 14a that supports the bracket 13 so as to be vertically movable, and a dolly 14b that integrally supports the support column 14a. The lifter 14 can move up and down to position the bracket 13 to a predetermined drawer height of the electric device 12 housed in the closed switchboard 11, and can also move to an arbitrary position outside the closed switchboard 11. ..

Reference numeral 17 denotes an enclosure member, which includes a front portion 17A, a side surface portion 17B, a rear surface portion 17C, and a ceiling portion 17D excluding a portion facing the front surface (right surface in the drawing) of the closed switchboard 11. As shown in FIG. 2, the side surface portions 17B and the rear surface portion 17C can surround both sides and the rear of the lifter 14 while maintaining a space for inspection. Further, for the front surface portion 17A, the side surface portions 17B, and the rear surface portion 17C (these are referred to as peripheral surface portions), a sheet material having translucency and flexibility is used to collect outside light. .. As the sheet material, as shown by the thick broken line in FIG. 2, a material having a bellows portion and expandable and contractible in the horizontal direction is used.

Therefore, the peripheral surface portion of the enclosure member 17 can be provided with a space for inspection around the lifter 14 by extending the bellows portion during the inspection described later of the electrical device 12. On the other hand, by contracting the bellows portion during non-inspection such as after inspection, the circumference of the lifter 14 can be covered in a compact state excluding the inspection space.

The ceiling portion 17D covers the upper part of the space surrounded by the above-mentioned peripheral surface portions (front surface portion 17A, both side surface portions 17B, and rear surface portion 17C), and a translucent material is used to collect outside light. Of the ceiling portion 17D, a portion (hereinafter referred to as an immediate upper portion) 17Da (see FIG. 2) that covers the upper part of the lifter 14 is formed of a hard material such as an acrylic plate. On the other hand, the peripheral portion 17Db of the directly upper portion 17Da made of a hard material is formed of a flexible material.

The ceiling portion 17D is an inclined surface that descends rearward (to the right in the drawing) in combination with the closed switchboard 11 shown in FIG. 1, and the front end (left end in the drawing) is one of the roofs of the closed switchboard 11. It is preferable to form it in the shape of an eave so that it overlaps with the part.

The directly upper portion 17Da of the ceiling portion made of the hard material of the enclosure member 17 configured in this way is integrally connected to and supported by the support member 14a of the lifter 14 by a support material (not shown). Therefore, the enclosure member 17 is configured to be movable together with the lifter 14.

The enclosure member 17 can be made to stand on its own due to the rigidity of the bellows portion in the vertical direction. Further, although not shown, it may be supported by a simple frame material. With these configurations, the enclosure member 17 maintains a state in which an inspection space is maintained around the lifter 14 as shown in FIG. 2 when the electrical device 12 is inspected.

In the above configuration, when inspecting the electrical equipment 12 housed in the closed switchboard 11 in a multi-stage, stacked configuration, first, the front door 11a (shown in FIG. 2) of the closed switchboard 11 is opened, and then the open surface is opened. The lifter 14 is moved to a position facing the above.

At this time, since the enclosure member 17 moves together with the lifter 14, it moves to a position facing the front surface portion of the closed switchboard 11. In this state, the bellows portion of the front portion 17A, the side surface portions 17B, and the rear surface portion 17C of the enclosure member 17 excluding the portion facing the closed switchboard 11 is stretched, and as shown in FIGS. 1 and 2, the periphery of the lifter 14 is stretched. Is surrounded while maintaining a space for inspection.

In this state, the bracket 13 is moved up and down to align with the storage height of the electric device 12.

After aligning the bracket 13, the electric device 12 is pulled out onto the bracket 13 and an inspection is performed on the bracket 13.

Here, as shown in FIG. 1, the ceiling portion 17D of the enclosure member 17 has a front edge portion (left end portion in the drawing) wrapped around the roof of the closed switchboard 11 in an eaves shape, so that rainwater is inside even when it rains. Does not invade. Further, the closed switchboard 11 may have a different board width depending on the storage device, but since the front portion 17A of the enclosure member 17 is also bellows-shaped, it can be closed corresponding to different board widths, and rainwater invades from this portion. Can also be prevented.

After the inspection is completed, as shown in FIG. 3, the bellows portions of the side surface portions 17B and the rear surface portion 17C of the enclosure member 17 are reduced to be formed so as to be substantially equal to the peripheral length of the hard material portion 17Da of the ceiling portion 17D. In this case, if the upper side portions of the both side surface portions 17B and the rear surface portion 17C and the outer side of the peripheral portion 17Db of the ceiling portion 17D are separated from each other, the reduction operation of the both side surface portions 17B and the rear surface portion 17C is not hindered. Smooth reduction operation is possible. Further, by extending the bellows portions of both front portions 17A of the enclosure member, the opening on the front surface of the enclosure member 17 that communicates with the inside of the closed switchboard 11 at the time of inspection can be closed.

By these operations, the lifter 14 can be covered with the surrounding member 17 in a compact shape excluding the inspection space. That is, it is possible to obtain a waterproof and dustproof effect equal to or higher than that of covering with a conventional curing sheet. In addition, the operation is much easier than the conventional work of handling a large-area curing sheet and covering a tall lifter, and the burden on the operator can be reduced.

The bellows provided on the front surface portion 17A, the side surface portions 17B, and the rear surface portion 17C of the enclosure member 17 may not be provided on the entire surface thereof, and may be provided in the necessary portion within the minimum range.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

11 ... Closed switchboard 12 ... Electrical equipment 13 ... Bracket 14 ... Lifter 17 ... Enclosure members 17A, 17B, 17C ... Front, both sides, rear surface 17D ... Ceiling 17Da ... Straight made of hard material Upper 17Db ... Peripheral part made of flexible material

Claims (2)

In order to position the electrical equipment housed in the closed switchboard to a predetermined drawer height, the bracket for holding the equipment is configured to be movable up and down, and a lifter that can be moved to any position outside the closed switchboard, and
It is made of a translucent and flexible material, and has a translucent surface and a peripheral surface that surrounds the lifter except for the portion facing the closed switchboard while maintaining a space for inspection. It has a ceiling portion that covers the upper part of the space surrounded by the peripheral surface portion, and is provided with an enclosure member that can move together with the lifter.
The peripheral surface portion has a bellows portion that can be expanded and contracted in the horizontal direction, and the ceiling portion is formed of a hard material directly above the lifter and a flexible material at the peripheral edge of the immediately above the ceiling portion. Has been
The bellows portion of the peripheral surface portion can be expanded to a state where the space for the inspection can be secured at the time of inspection, and can be contracted to a state where the space for the inspection is excluded at the time of non-inspection. apparatus. The straight top, equipment inspection apparatus according to claim 1, characterized in that it is integrally fixed to the lifter.

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