JP2010279102A - Metal-clad type switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the ingress of rain water through a portion of a lifting member for lifting a roof, even without having to carry out caulking processing. <P>SOLUTION: Metal-clad type switchgear includes: box bodies 2a, 2b for housing an electrical apparatus; roofs 3a, 3b provided on the ceiling portions of the box bodies 2a, 2b; lifting members, such as, hanger bolts 6a, 6b that are fixed on the outer surfaces of the roofs 3a, 3b in the direction of depth and are used for lifting the roofs 3a, 3b; and end portion waterproof covers 4a, 4b, 5 so provided as to cover the lifting members and the end portions of the roofs 3a, 3b and fixed on either roof 3a (3b). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a metal closed switchgear that is installed outdoors with a roof provided on the ceiling of a box.

  Conventionally, when a metal closed type switchgear in which an electric device such as a circuit breaker is housed in a box is installed outdoors, a roof is provided on the ceiling of the box (for example, patent) Reference 1).

  FIG. 9 shows a metal closed switchgear that is installed outdoors. On the ceilings of a plurality of boxes 2a and 2b fixed to the installation base 1, inclined roofs 3a and 3b are respectively provided. . The end waterproof covers 4a and 4b are provided at the ends of the roofs 3a and 3b, and the connecting waterproof cover 5 is provided at the connecting portion between the roofs 3a and 3b.

  The roofs 3a and 3b are respectively provided with suspension bolts 6a and 6b for lifting with a crane or the like. The suspension bolts 6a and 6b are operated in a state where they are attached to the roofs 3a and 3b. Handles 7a and 7b and board nameplates 8a and 8b are attached to the front sides of the boxes 2a and 2b.

JP 2005-33849 A (2nd page, FIG. 10)

  The conventional metal closed switchgear described above has the following problems. After fixing the roofs 3a and 3b to the boxes 2a and 2b and attaching the end waterproof covers 4a and 4b and the connecting waterproof cover 5, the gap between the roofs 3a and 3b and the suspension bolts 6a and 6b is caulked with silicon or the like. Coking with wood. Thereby, it is possible to prevent rainwater from entering the roofs 3a and 3b.

  However, the caulking process is often an on-site work after installation of the boxes 2a and 2b, and great care has to be taken. That is, the environment is different and a short time coking process is required, which is a difficult task. If the gaps between the roofs 3a and 3b and the suspension bolts 6a and 6b are not completely closed, rainwater enters and rust is generated on the roofs 3a and 3b, so that rainwater enters the boxes 2a and 2b. It will invade. For this reason, there has been a demand for a method for lifting the roofs 3a and 3b that does not require a caulking process and can prevent intrusion of rainwater.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a metal closed type switchgear that does not require a caulking process and prevents intrusion of rainwater from a roof.

  In order to achieve the above object, a metal closed switchgear according to the present invention is fixed in a box body for storing electrical equipment, a roof provided on a ceiling portion of the box body, and a depth direction of the outer surface of the roof. A lifting member for lifting the roof, and a waterproof cover that is provided so as to cover the lifting member and the end of the roof, and is fixed to the roof.

  According to the present invention, since the lifting member is attached to the roof end portion and the roof end portion including the lifting member is covered with the waterproof cover, the caulking process of the lifting member is unnecessary, and rainwater can be prevented from entering.

The front view which shows the structure of the metal closed type switchgear which concerns on Example 1 of this invention. The principal part sectional drawing which shows the roof part of the metal closed type switchgear which concerns on Example 1 of this invention. The principal part sectional drawing which shows the roof part of the metal closed type switchgear which concerns on Example 2 of this invention. The front view which shows the structure of the metal closed type switchgear which concerns on Example 3 of this invention. The principal part sectional drawing which shows the roof part of the metal closed type switchgear which concerns on Example 3 of this invention. The principal part side view which shows the roof part of the metal closed type switchgear which concerns on Example 3 of this invention. The front view which shows the structure of the metal closed type switchgear which concerns on Example 4 of this invention. The principal part sectional drawing which shows the roof part of the metal closed type switchgear which concerns on Example 4 of this invention. The front view which shows the structure of the conventional metal closing type switchgear.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, a metal closed switchgear according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a front view showing a configuration of a metal closed switchgear according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part showing a roof portion of the metal closed switchgear according to the first embodiment of the present invention. It is. In addition, in each figure, the same code | symbol was attached | subjected about the component similar to the past. Further, the box will be described as a two-sided board configuration.

  As shown in FIG. 1, inclined roofs 3 a and 3 b are respectively provided on the ceilings of a plurality of boxes 2 a and 2 b that house electrical devices such as circuit breakers fixed to the installation base 1. . The end portions of the roofs 3a and 3b are in the depth direction, and the connecting portions between the end waterproof covers 4a and 4b and the roofs 3a and 3b having a U-shaped cross section covering the front side to the back side are also provided in the depth direction. A connecting waterproof cover 5 having a U-shaped cross section is provided so as to cover from the front side to the back side. The end waterproof covers 4a and 4b and the connecting waterproof cover 5 are wider than before. The roofs 3a and 3b are fixed to fixing members fixed to the ceiling portions of the box bodies 2a and 2b (not shown).

  A plurality of suspension bolts 6a and 6b for lifting with a crane or the like are provided on the outer ends of the roofs 3a and 3b, respectively. A plurality of suspension bolts 6a and 6b are provided at both ends in the depth direction of the roofs 3a and 3b, and are covered with the end waterproof covers 4a and 4b or the connected waterproof cover 5. Handles 7a and 7b and board nameplates 8a and 8b are attached to the front sides of the boxes 2a and 2b.

  Next, the arrangement of the suspension bolts 6a and 6b in the connecting waterproof cover 5 will be described with reference to FIG.

  As shown in FIG. 2, the end surfaces of the roofs 3a and 3b are formed with bent portions 3a1 and 3b1 which are bent upward in an L shape, and suspension bolts 6a and 6b are nuts 9a and 9b on the outside thereof. It is fixed with. Between the bent portions 3a1 and 3b1 including the space between the suspension bolts 6a and 6b of the adjacent roofs 3a and 3b is covered with a connecting waterproof cover 5. The connected waterproof cover 5 is fixed to one roof 3a with a fixing bolt 11 made of stainless steel or the like through a waterproof packing 10 such as silicon rubber.

  Thereby, since the suspension bolts 6a and 6b are covered with the connecting waterproof cover 5, rainwater does not easily enter, and a coking process is unnecessary. In addition, even if rainwater enters the connected waterproof cover 5 due to unexpected rain, the bent portions 3a1 and 3b1 are provided on the end surfaces of the roofs 3a and 3b. Can be prevented.

  According to the metal closed type switchgear of the first embodiment, the suspension bolts 6a and 6b are attached to the ends of the roofs 3a and 3b, and the suspension bolts 6a and 6b are covered with the connecting waterproof cover 5. The caulking process to 6b is unnecessary, the intrusion of rainwater can be prevented, and the mounting work of the roofs 3a and 3b can be facilitated in a short time.

  In the said Example 1, although demonstrated using the connection waterproof cover 5 used for the connection part at the time of boarding, also in the edge part waterproof covers 4a and 4b, a caulking process is carried out by covering the suspension bolt 6a or 6b, respectively. It is unnecessary and can prevent rainwater from entering. In the single board, only the end waterproof covers 4a and 4b are provided.

  Here, the connecting waterproof cover 5 and the end waterproof covers 4a and 4b are simply referred to as waterproof covers. The suspension bolts 6a and 6b are referred to as lifting members for lifting the roofs 3a and 3b.

  Next, a metal closed switchgear according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of the main part showing the roof portion of the metal closed switchgear according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in the shape of the waterproof cover. In FIG. 3, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 3, the connection waterproof cover 12 covering between the suspension bolts 6a and 6b has a U-shaped cross section.

  According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the rainwater drainage of the connected waterproof cover 12 can be improved.

  Next, a metal closed switchgear according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a front view showing a configuration of a metal closed switchgear according to a third embodiment of the present invention, and FIG. 5 is a cross-sectional view of a main part showing a roof portion of the metal closed switchgear according to the third embodiment of the present invention. FIG. 6 is a side view of the main part showing the roof portion of the metal closed switchgear according to the third embodiment of the present invention. The third embodiment is different from the first embodiment in the lifting member. 4 to 6, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 4 and 5, L-shaped angles 13 a and 13 b are provided in the depth direction from the front side to the back side at the ends of the outer surfaces of the roofs 3 a and 3 b. One side surface parallel to the roofs 3a and 3b of the L-shaped angles 13a and 13b is fixed to the roofs 3a and 3b with fixing bolts 14a and 14b and nuts 15a and 15b. On the other side surfaces of the L-shaped angles 13 a and 13 b, the side surface of the connecting waterproof cover 5 is fixed by a fixing bolt 16 via the waterproof packing 10. Between the bent portions 3a1 and 3b1 of the adjacent roofs 3a and 3b, the space between the L-shaped angles 13a and 13b is covered with a connecting waterproof cover 5.

  Further, as shown in FIG. 6, a suspension hole 17 for lifting the roofs 3 a and 3 b and a screw hole 18 for tightening the fixing bolt 16 are provided on the other side surfaces of the L-shaped angles 13 a and 13 b. Here, the L-shaped angles 13a and 13b are referred to as lifting members.

  According to the third embodiment, the same effects as in the first embodiment can be obtained, and since the L-shaped angles 13a and 13b are used, the roofs 3a and 3b can be prevented from being distorted, and heavy roofs 3a and 3b can be prevented. It will be able to withstand.

  In the third embodiment, the L-shaped angles 13a and 13b are fixed to the roofs 3a and 3b with the fixing bolts 14a and 14b and the nuts 15a and 15b. However, the L-shaped angles 13a and 13b are directly connected to the roofs 3a and 3b by spot welding or the like. It may be fixed to.

  Next, a metal closed switchgear according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 is a front view showing a configuration of a metal closed switchgear according to a fourth embodiment of the present invention, and FIG. 8 is a cross-sectional view of a main part showing a roof portion of the metal closed switchgear according to the fourth embodiment of the present invention. It is. The fourth embodiment is different from the first embodiment in the lifting member. 7 and 8, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 7 and 8, L-shaped angles 13 a and 13 b are respectively provided on the inner surfaces of the roofs 3 a and 3 b on the front side and the back side in the width direction. One side surface parallel to the roofs 3a and 3b of the L-shaped angles 13a and 13b is fixed to the roofs 3a and 3b with fixing bolts 14a and 14b and nuts 15a and 15b. Suspension holes 17a and 17b for lifting the roofs 3a and 3b are provided at the ends of the other side surfaces of the L-shaped angles 13a and 13b. Between the bent portions 3 a 1 and 3 b 1 including between the suspension holes 17 a and 17 b is covered with a connecting waterproof cover 5.

  According to the fourth embodiment, the same effects as in the first embodiment can be obtained, and the L-shaped angles 13a and 13b are provided on the inner surfaces of the roofs 3a and 3b, so that the height of the connecting waterproof cover 5 is suppressed. Can do.

DESCRIPTION OF SYMBOLS 1 Installation stand 2a, 2b Box 3a, 3b Roof 3a1, 3b1 Bending part 4a, 4b End part waterproof cover 5, 12 Connection waterproof cover 6a, 6b Hanging bolt 7a, 7b Handle 8a, 8b Board nameplate 9a, 9b, 15a 15b Nut 10 Waterproof packing 11, 14a, 14b, 16 Fixing bolts 13a, 13b L-shaped angles 17, 17a, 17b Suspension hole 18 Screw hole

Claims (5)

A box for storing electrical equipment;
A roof provided on the ceiling of the box,
The lifting member is fixed in the depth direction of the outer surface of the roof, and a lifting member for lifting the roof,
A waterproof cover provided to cover the lifting member and the end of the roof, and fixed to the roof;
A metal closed switchgear characterized by comprising:   2. The metal closed switchgear according to claim 1, wherein the lifting member is a plurality of suspension bolts.   2. The metal closed switchgear according to claim 1, wherein the lifting member is an L-shaped angle having a suspension hole. A box for storing electrical equipment;
A roof provided on the ceiling of the box,
A lifting member that is fixed in the width direction of the roof inner surface and has a suspension hole at an end,
A waterproof cover that is provided so as to cover the suspension hole and the end of the roof, and is fixed to the roof;
A metal closed switchgear characterized by comprising:   The metal closed switchgear according to any one of claims 1 to 4, wherein the waterproof cover has a U-shaped cross section.

Images