JP2012095440A - Metal-clad switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal-clad switchgear capable of allowing maintenance and inspection of each of a plurality of housings arranged side by side to be performed easily even when a front door of an adjacent housing is opened.SOLUTION: The metal-clad switchgear includes a front-side member provided on a front side of each of a plurality of housings 1a, 1b, 1c arranged side by side. The front-side member includes openable/closable front doors 3a, 3b, 3c, and a pair of guide rails 11a, 11b, 11c configured to movably move the front doors 3a, 3b, 3c and provided in a depth direction of the housings 1a, 1b, 1c. When the front side is open, the front doors 3a, 3b, 3c are housed in the housings 1a, 1b, 1c, respectively.

Description

  Embodiments of the present invention relate to a metal-closed switchgear that can be easily arranged for maintenance and inspection.

  Conventionally, in a metal closed type switchgear, as shown in FIG. 4, a plurality of box bodies 1a, 1b, and 1c each storing a storage device such as a circuit breaker or a disconnecting device are arranged in a line to constitute a power supply system. ing. The plurality of boxes 1a, 1b, and 1c are fixed to the gantry 2 in a single row, and front doors 3a, 3b, and 3c that can be opened and closed are provided on the front side. The front doors 3a, 3b, 3c are fixed with pivotable hinges 4a, 4b, 4c, one of which is fixed to the box 1a, 1b, 1c on one side and the handles 5a, 5b on the other side. 5c (for example, refer to Patent Document 1).

JP 2009-17611 A

The conventional metal closed switchgear described above has the following problems.
At the time of maintenance and inspection, the front doors 3a, 3b and 3c are opened with the hinges 4a, 4b and 4c as fulcrums, and the number of operations and lubricating oil are inspected, for example, in a circuit breaker of a storage device. As the opening angle θ, for example, about 135 degrees of θ = 90 degrees or more is adopted so that the storage device can be easily confirmed, and the opening angle is fixed at the angle.

  However, if all the front doors 3a, 3b, 3c are opened, the front doors 1b, 1c of the adjacent box bodies 1b, 1c are obstructive at the left and middle box bodies 1a, 1b except for the box body 1c at the right end of the figure. It becomes difficult to confirm the inside. For this reason, the opening angle θ of the adjacent front doors 1b and 1c has to be temporarily fixed to 90 degrees or less or temporarily closed.

  The present invention has been made to solve the above-described problems, and provides a metal closed switchgear that can easily perform maintenance and inspection of storage equipment even when all front doors of the boxed boxes are opened. For the purpose.

  In order to achieve the above object, a metal closed switchgear according to an embodiment is a metal closed switchgear having front side members respectively provided on the front side of a plurality of boxes arranged in a line. The side member includes an openable / closable front door, and a pair of guide rails provided in the box while moving the front door movably.

The perspective view which shows the structure of the metal closed type switchgear which concerns on Example 1 of this invention. The principal part perspective view which shows the structure of the metal closed type switchgear which concerns on Example 2 of this invention. The principal part perspective view which shows the structure of the metal closed type switchgear which concerns on Example 3 of this invention. The perspective view which shows the structure of the conventional metal closure type switchgear.

  The present embodiment is to store the opened front door in the box. Embodiments of the present invention will be described below with reference to the drawings.

  First, a metal closed switchgear according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a perspective view showing a configuration of a metal closed switchgear according to Embodiment 1 of the present invention. In FIG. 1, the same components as those in the prior art are denoted by the same reference numerals.

  As shown in FIG. 1, a plurality of boxes 1 a, 1 b, 1 c in which storage devices such as circuit breakers and disconnecting devices are stored in functional units are fixed and arranged in a row on the gantry 2. Front doors 3a, 3b, and 3c that can be opened and closed are provided on the front sides of the plurality of boxes 1a, 1b, and 1c, respectively.

  Rotating rods 10a, 10b, and 10c that are rotatably fixed to the front doors 3a, 3b, and 3c and slightly protrude in the vertical direction are fixed to one side of the front doors 3a, 3b, and 3c. The protruding portions are housed in a pair of U-shaped guide rails 11a, 11b, 11c arranged in the vertical direction. The guide rails 11a, 11b, and 11c are provided on the ceiling side and the floor side in the depth direction from the front side to the back side. Handles 5a, 5b, and 5c are provided on the other sides of the front doors 3a, 3b, and 3c.

  Next, the opening / closing operation of the front doors 3a, 3b, 3c will be described. Note that the leftmost box 1a in the drawing shows a state in which the front door 3a is opened 90 degrees, the middle box 1b in the middle of storage, and the rightmost box 1c in a closed state.

  First, like the box 1a, the front door 3a is opened by about 90 degrees so as to be parallel to the side plate with the handle 5a. That is, the front door 3a is opened in the left-right direction. In this case, for example, if a recess is provided at the end in the guide rail 11a, and a spherical protrusion that is urged so as to be pushed out by a spring or the like is provided at both ends of the rotating rod 10a, the protrusion protrudes into the recess. The parts fit together and can be easily rotated using this as a fulcrum.

  Next, if the front door 3b is pushed back along the guide rail 11b like the box 1b, the front side of the box 1b can be opened. The protrusions at both ends of the rotating rod 10a move out of the recess and move in the guide rail 11b. The upper and lower ends of the front door 3b also move within the guide rail 11b. In the case of closing, the reverse procedure is used.

  Here, the front doors 3a, 3b, 3c including the rotating rods 10a, 10b, 10c, and a pair of guide rails 11a, 11b for housing the front doors 3a, 3b, 3c in the boxes 1a, 1b, 1c, 11c is defined as a front-side member that opens and closes the front side.

  According to the metal closed type switchgear of the first embodiment, the front doors 3a, 3b, 3c are opened to be substantially parallel to the side plates, and the pair of guide rails 11a, 11b, 11c provided in the boxes 1a, 1b, 1c. Therefore, even if all the front doors 3a, 3b, 3c are opened, they can be opened without being obstructed by the adjacent front doors 3a, 3b, 3c. Can be made easy.

  Next, a metal closed switchgear according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a perspective view of the main part showing the configuration of the metal closed switchgear according to the second embodiment of the present invention. In addition, this Example 2 is different from Example 1 in that the front door is divided into two. In FIG. 2, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The box is shown as a single board.

  As shown in FIG. 2A, the front side is divided into a first front door 12a in the upper part of the figure and a second front door 12b in the lower part of the figure. A pair of U-shaped guide rails 13a and 13b arranged in the left-right direction is provided on the upper portion of the front doors 12a and 12b in the figure. The handle 5a is provided in the lower part of the front doors 12a and 12b.

  When opening the first front door 12a, as shown in FIG. 2B, the handle 5a is held and the first front door 12a is opened approximately 90 degrees so as to be horizontal with the ceiling plate. That is, the first front door 12a is opened in the vertical direction. And as shown in FIG.2 (c), the 1st front door 12a is accommodated along a pair of guide rail 13a. The same applies to the second front door 12b. Such two front doors 12a and 12b are suitable for two-stage stacking.

  According to the metal closed switchgear of the second embodiment, in addition to the effects of the first embodiment, it is suitable for the two-stage box 1a.

  Next, a metal closed switchgear according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a perspective view of the main part showing the configuration of the metal closed switchgear according to the third embodiment of the present invention. In addition, this Example 3 is different from Example 2 in that the front door is further divided into two. In FIG. 3, the same components as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The box is shown as a single board.

  As shown in FIG. 3A, the first front door 12a is divided into two upper and lower first upper front doors 12a1 and 12a2 shown in the figure, and these are connected by a hinge 14a. Similarly, the second front door 12b is divided into a second upper front door 12b1 and a second lower front door 12b2 shown in the upper and lower parts in the figure, and these are connected by a hinge 14b.

  When the first front door 12a is opened, as shown in FIG. 3 (b), the handle 5a is held and the hinge 14a portion is folded and opened until it is level with the ceiling plate. Then, as shown in FIG. 3C, the folded state is maintained, and the sheet is stored along the pair of guide rails 13a. The same applies to the second front door 12b.

  According to the metal closed switchgear of the third embodiment, in addition to the effects of the second embodiment, the moving distance for storing the front doors 12a and 12b can be shortened.

  According to the embodiment as described above, when opening the front side of the lined box, the front door is stored in the box, so that the adjacent front door is not obstructed. The maintenance and inspection of the storage device can be facilitated.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1a, 1b, 1c Box 2 Base 3a, 3b, 3c, 12a, 12a1, 12a2, 12b, 12b1, 12b2 Front door 4a, 4b, 4c, 14a, 14b Hinge 5a, 5b, 5c Handle 10a, 10b, 10c Rotation Bar 11a, 11b, 11c, 13a, 13b Guide rail

Claims (5)

A metal closed type switchgear having front side members respectively provided on the front side of a plurality of boxes arranged in a line,
The front side member is an openable front door;
While moving the front door movably, a pair of guide rails provided in the box,
A metal closed switchgear characterized by comprising: Open and close the front door in the left-right direction,
The metal closed switchgear according to claim 1, wherein the pair of guide rails are provided in a vertical direction of the box. Open and close the front door in the vertical direction,
The metal closed switchgear according to claim 1, wherein the pair of guide rails are provided in a lateral direction of the box.   The metal closed switchgear according to any one of claims 1 to 3, wherein the front door is divided into two and the pair of guide rails are provided.   The metal closed switchgear according to claim 4, wherein the front door divided into two parts is further divided into two parts and connected by hinges.

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