JP2009183130A - Structure for installing cable bracket in casing housing power distribution apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for installing a bracket using a space which is prepared for ventilation at a butting part, where angular steel members are butted to form front and back sides of a base composed of a rectangular frame serving as a pedestal of a casing. <P>SOLUTION: The head 9a of a bolt 9 is locked outside the base 4 at the space 6 formed at the back side of the base 4. A supporting body 10 with a flat plate formed with a gap from the inside of the base 4, is fixed to a screw portion extending to the inside of the bolt 9. The bracket 11 is fixedly supported at the flat plate of the supporting body 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mounting structure for a cable bracket that supports and fixes a cable that is raised from the ground in an outer box that houses a power distribution device installed on a road.

  In order to supply electric power to the electric power consumer, an outer box containing power distribution equipment is installed on the road or the like. In this outer box, switches, disconnectors, and the like are housed and installed as power distribution equipment, and the supply of power is stopped or restarted as necessary. These switches and disconnectors are divided into those owned by electric power companies and those owned by electric power consumers.

In such an outer box, a bracket is used to support and fix a cable that is raised from the ground and connected to the switch, disconnector, etc. below these devices. This bracket is fixed to the mounting plate or inner plate of the outer box, and converges and supports the cable. FIG. 12 shows this configuration. Moreover, there exists a thing shown in patent document 1 as a bracket.
JP-A-11-89065

  As shown in FIG. 12, the outer box A is a shape in which a flat rectangular parallelepiped shape is erected, and is divided on the left and right sides, the left side is a power supply side and two circuits of three-phase disconnectors B are on the right side. A similar disconnector B is installed on the customer side, and the cables 1 launched from the ground are connected to each other. Each of these cables 1 is converged on the lower side by three and supported and fixed by a bracket 3 to a plate body 2 provided horizontally in the outer box A. An opening / closing door that opens to the left and right is provided on the front surface of the outer box A (not shown).

  The lower base 4 of the outer box A is formed with a channel-type steel material 18 on the short sides facing each other in the left-right direction, with the concave portion 18a on the outside, and on the long sides facing each other in the front-rear direction. Two angle-type steel materials 19 are formed in such a manner that each side piece 19a is abutted with each other with a gap therebetween and overlapped vertically to form a substantially channel shape and welded to the left and right channel-type steel materials 18.

  Therefore, gaps 5 and 6 are provided in the horizontal direction on the front side surface and the rear side surface of the base 4 as shown in FIG. These gaps 5 and 6 are for releasing moisture in the base 4 to the outside. In addition, a bottom plate 7 is provided in the opening on the upper surface of the base 4, and the hermeticity in the outer box A in which the power distribution equipment is housed is maintained.

  When a ground fault short-circuit accident occurs, it may be necessary to disconnect from the main line so as not to affect the power supply side main line or to minimize the influence. However, in the disconnector that is installed and stored in the outer box, the supply of the electric power cannot be disconnected while the electric power is supplied.

  Therefore, in recent years, it has been promoted to install a switch in place of the disconnector of the electric power consumer installed in the outer box, but in the outer box, the switch can be opened and closed instead of the disconnector. When installing the device, as shown in FIG. 13, the air switch or the like is vertically long and takes a larger space in the outer box than the disconnector.

  However, in the outer box, the distance between the wire connection terminal of the switch and the bracket is required to be a certain distance from the viewpoint of safety and the like. Therefore, when the disconnector is replaced with a switch, an appropriate distance cannot be secured if the conventional cable is used as it is. That is, the bracket cannot be used at a position above the bottom plate of the outer box.

  On the other hand, replacing a cable is not economical because it requires a large amount of money and labor, such as processing a terminal such as a cable head, and requires time. Moreover, this is a burden on the power consumer side. Therefore, if possible, a so-called structure in which an existing cable is adopted as it is, that is, an existing cable is adopted is desired.

  Therefore, the inventors have provided a base made of a quadrilateral frame, which is the base of the outer box, and the front and rear sides of the base are abutted against an angle-type steel material. Focusing on the fact that there was a gap provided, we invented mounting the bracket using this gap.

  The invention according to claim 1 is an outer box that is installed on the ground and accommodates power distribution equipment therein, and a base on which the outer box is placed is abutted between two angle members whose front and rear sides are butted against each other. A bracket mounting structure comprising a quadrilateral frame having a gap between edges and connecting one end of the cable to the power distribution device, and supporting and fixing the cable raised from the ground below the power distribution device. A piece of a bolt head or hook-shaped locking piece is locked to the outside of the base in a gap provided on the side, and a member extending inside the base of the bolt or hook-shaped locking piece is attached to the base. An outer box in which a support body having a flat plate portion provided at an interval from the inside is fixed, and a power distribution device for supporting and fixing the bracket or the position adjusting plate body supporting the bracket is mounted on the flat plate portion of the support body. In cable And the mounting structure of the racket.

  The invention of claim 2 uses a bolt having a head as the bolt, and inserts each screw portion of the two bolts into the gap of the base from the outside of the outer box. The outer box housing the power distribution device according to claim 1, wherein the head is locked in the gap and the support is fixed to the threaded portion of each bolt projecting to the inside of the outer box with a gap therebetween. A cable bracket mounting structure was adopted.

  According to a third aspect of the present invention, the bolt has a flat head in one direction, and the two bolts from the inside of the outer box are spaced apart from each other in the gap of the base. After each head is inserted horizontally, each head is rotated substantially at a right angle and locked in the gap, and the support is attached to the threaded portion of each bolt projecting inside the outer box with a gap therebetween. It was set as the attachment structure of the cable bracket in the outer box which accommodated the power distribution apparatus of the said Claim 1 to fix.

  According to a fourth aspect of the present invention, the hook-shaped locking piece uses an angle-shaped locking piece, and each one side piece of the two locking pieces is inserted into the gap of the base from the inside of the outer box. Protruding to the outside of the base, each one side piece is arranged in a substantially straight line outside the base, and the other side piece of the two locking pieces in the base is overlapped to attach the locking piece to the base Align the position of the through-holes of the heads of the bolts with the through-holes in the separately provided heads with the respective through-holes that are locked in the gap and provided in advance in the other side piece that is overlapped, and these through-holes The bolt according to claim 1, wherein a bolt is inserted and fixed with a nut, another similar one is provided in the gap with a gap, and the support is fixed to a thread portion of each bolt. The cable bracket is attached to the outer box containing the power distribution equipment.

  According to a fifth aspect of the present invention, the support body is formed by bending both end portions of the plate body to form stepped portions, and through holes are provided in the flat plate portions at both ends, and the base of the bolt is formed in the through hole. A cable bracket mounting structure in an outer box housing the power distribution device according to claim 2 or 3 is fixed through a member extending inward.

  According to the first aspect of the present invention, it is possible to support and fix the cable reliably and easily in compliance with various regulations by using the existing cable that has been launched from the ground as it is. Therefore, since the cable is not replaced, the work time is short, the cost is low, the work can be performed economically, and the cost burden on the power consumer side is reduced. In addition, the outer box is not damaged at all. As a result, the switch from the disconnector on the power customer side to the switch in the outer box that houses and installs the power distribution equipment is promoted, and the spillover of damage to the power supply main line in the event of a ground fault short circuit accident Can be suppressed as much as possible, and contributes to the safety of people.

  According to the invention of claim 2, a bolt having a generally used head is used as the bolt, and the head of the bolt is locked and fixed in the gap of the base from the outside of the outer box, and the inner side of the outer box Since the brackets are attached to the screw portions of these bolts via the support, the cable can be supported and fixed more reliably, easily and firmly without damaging the outer box.

  According to the invention of claim 3, as the bolt, a T-shaped section having a flat head portion in one direction is locked and fixed in the gap of the base, and a support is attached to the screw portion of these bolts. The bracket can be attached only through the work from the inside of the outer box, and even if the work cannot be done from the rear side of the outer box, the outer box will not be damaged at all. The cable can be supported and fixed securely, easily and firmly.

  According to a fourth aspect of the present invention, two angle-shaped locking pieces are used as the hook-shaped locking pieces of the first aspect, and one side piece of each of the locking pieces is used as the base. Since the brackets are attached to these locking pieces via metal fittings and supports, the brackets can be attached only from the inside of the outer box, and work can be done from the rear side of the outer box. Even if this is not possible, the cable can be supported and fixed more reliably, easily and firmly without damaging the outer box.

  Further, according to the invention of claim 5, the support body is formed by bending both end portions of the plate body to form stepped portions, and through holes are provided in the flat plate portions at both ends. Since it is fixed through a member extending inside the bolt base, the support plate can be more firmly and easily attached to the member extending inside the bolt base.

  An outer box that is installed on the ground and accommodates power distribution equipment inside, and the base on which the outer box is placed has four sides with front and rear sides butting two angle members, and a gap between the butted edges A gap provided on the rear side of the base in a mounting structure of a bracket that is formed of a frame and connects one end to the power distribution device and supports and fixes a cable raised from the ground below the power distribution device. A bolt head or a hook-shaped locking piece is locked to the outside of the base, and a member extending inside the base of the bolt or hook-shaped locking piece is spaced from the inside of the base. A support having a flat plate portion is fixed, and the bracket is supported and fixed to the flat plate portion of the support.

  As a result, it is possible to support and fix the cable reliably and easily in compliance with various regulations by using the cable launched from the existing underground as it is.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a partial side view showing a state in which a bracket is mounted in a base according to Embodiment 1 of the present invention. FIG. 2 is a partial plan view showing a state in which a bracket is attached in the base of Embodiment 1 of the present invention.

  Of the disconnector B stored and installed in the outer box A, the disconnector B on the right customer side is replaced with an air switch C (hereinafter referred to as “switch C”), and the existing cable 1 Perform the replacement work using.

  FIG. 3 is a perspective view showing that a bolt is inserted into the gap on the rear side surface of the base according to the first embodiment of the present invention. FIG. 4 is a perspective view of a state in which the bolt is locked in the gap on the rear side surface of the base. FIG. 5 is a perspective view of a mounting bracket used in Embodiment 1 of the present invention.

  As shown in FIG. 3, two bolts 9 having a substantially T-shaped cross section with a head portion 9a flat in one direction are prepared, and a mounting bracket 10 shown in FIG. 5 is prepared. The mounting bracket 10 is formed by bending both end portions of a rectangular plate body into stepped portions, having through-holes 10a in flat plate portions at both ends, and further forming two through-holes 10b in a mountain-shaped flat plate portion. It is what wore.

  The bracket 11 used here has been conventionally used. As shown in FIGS. 1 and 2, the support portion 11a has a circular shape, and a base portion 11b having a semicircular portion that forms the support portion 11a. And a semi-circular pressing portion 11c, and a part of both ends of the semi-circular portion of the base portion 11b and the pressing portion 11c is extended into a hook shape, and the hook-shaped portions are provided in advance on both sides. The screw 12 is tightened and fixed to the threaded through hole. Moreover, the edge part on the opposite side to the support part 11a of the said base part 11b is a flat edge, and the through-hole is drilled in the both ends, respectively.

  3 and 4, from the inside of the outer box A, the bolt 9 is spaced from the gap 6 provided in the horizontal direction on the rear side of the base 4 with the flat heads 9a being horizontal. Open and insert. Subsequently, the head 9 a of the bolt 9 is turned substantially at a right angle, the bolt 9 is pulled inside the outer box, and the head 9 a of the bolt 9 is hooked in the gap 6 to be locked. The remaining one is similarly locked in the gap 6.

  Further, as shown in FIG. 2, the threaded portions 9 b of the respective bolts 9 protruding inside the outer box A with a space therebetween are fitted into the through holes 10 a at both ends of the mounting bracket 10 and fixed with the nuts 13. Then, the positions of the through holes of the bracket 11 are respectively aligned with the two through holes 10 b of the flat plate portion of the mounting bracket 10 which is a mountain shape, and fixed with bolts 14 and nuts 15.

  Thereafter, the three cables 1 may be supported and fixed by the bracket 11. As for the support and fixing, as shown in FIG. 1, one CV cable 26 in which three cables are covered with an outer skin layer may be used. Alternatively, a triplex CVT cable in which three wires are converged may be used.

  In addition, when the CV cable 26 is supported and fixed by the bracket 11, the rectangular position adjusting plate 27 shown in FIGS. 10 and 11 is attached to the bracket 11 in order to set the vertical height to a more appropriate position. The bracket 11 and the mounting bracket 10 can be fixed by being interposed between the brackets 10. In this position adjusting plate 27, two rows of elongated holes 27a are arranged in the vertical direction, and the positions of the bracket 11 and the mounting bracket 10 are aligned at appropriate positions of these elongated holes 27, respectively. 14 is screwed and fixed with a nut 15. By attaching the bracket 11 and the mounting bracket 10 with the position adjusting plate 27 interposed, a more flexible response can be made in the height adjustment of the bracket 11 in the vertical direction.

Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 6 is a perspective view of a hook-type locking piece used in Embodiment 2 of the present invention and a bolt having a through-hole formed in a head portion fixed to these hook-type locking pieces. FIG. 7 is a partial plan view of a state in which the mounting bracket of Embodiment 2 of the present invention is supported and fixed to the base. 8 is a side view of the same part.

  As shown in FIG. 6, two locking pieces 16 made of an angle type steel material are prepared as hook-type locking pieces to be locked in the gaps of the base 4 and the other side pieces 16b of these locking pieces 16 are provided. A through hole 16c is formed in the center. Separately, a bolt 17 having a through hole 17a in the head is prepared. Further, a normal hexagon bolt 21 and a nut 22 are prepared. In addition, the mounting bracket 20 used here is not the mounting bracket 10 but has flat plate portions at both ends of the mounting bracket 10 as shown in FIG. It consists of the ones worn horizontally.

  One side piece 16a of each of the locking pieces 16 is inserted into the horizontal gap 6 on the rear side surface of the base 4 from the inside of the base 4 and protrudes to the outside of the base 4, as shown in FIG. The one side piece 16a is arranged in a substantially straight line outside the base 4 and the other side pieces 16b of the two locking pieces 16 in the base 4 are overlapped to form the base piece 16 as a base. 4 is retained in the gap 6. Then, the bolts 17 are leveled with the through holes 16c of the other side pieces 16b of the overlapped locking pieces 16, and the positions of the through holes 17a of the bolts 17 are aligned with the through holes 16c and 17a. The hexagon bolt 21 is inserted and tightened with a nut 22 to be fixed. One more thing is provided at intervals.

  The threaded portions 17b of the bolts 17 are fitted into through holes 20a positioned on the left and right outer sides of the mounting bracket 20 and fastened with nuts 23 to be fixed, and the two through holes 20a on the inner side of the mounting bracket 20 are used. The bracket is fixed as in the first embodiment.

Next, Embodiment 3 of the present invention will be described with reference to the drawings.
FIG. 9 is a partial plan view of a state in which the mounting bracket of Embodiment 3 of the present invention is supported and fixed. In the third embodiment, a bolt 25 with a head that is generally used is used. Two bolts 25 are prepared, and these bolts 25 are inserted from the outside of the outer box A into the gap 6 of the base 4 at intervals to lock the heads 25a of the bolts 25. The through holes 10a at both ends of the mounting bracket 10 are fitted into the threaded portions 25b of the bolts 25 that are opened and protruded to the inside of the outer box A, and are fastened with nuts 24 and fixed.

  Thereafter, the bracket is fixed in the same manner as in the first embodiment by using the two through holes 10b of the flat plate portion which is a mountain shape of the mounting bracket 10.

  In the first, second, or third embodiment, before starting the work, the bottom plate 7 of the outer box A is once removed, and after the work is finished, the bottom plate 7 is attached again to seal the inside of the outer box A. To recover.

  In the said Example, it replaced with the disconnecting switch B which was installed, and demonstrated the case where the switch C was installed, However, The structure of this Example is not limited to this case, This implementation Of course, it may be used for other power distribution devices where the examples are used.

  Further, the mounting bracket 10 is used in the first and third embodiments, and the mounting bracket 20 is used in the second embodiment. However, the present invention is not limited to these configurations, and a flat plate portion provided at an interval from the inside of the base 4 is provided. Any structure may be used as long as the support is provided and the bracket is attached to the flat plate portion.

  Further, in the second embodiment, the bolt 17 having the through hole 17a in the head is used. However, a bolt formed by bending the head into a bowl shape is prepared. It can also be inserted into the through hole 16c of the locking piece 16 and locked (not shown). Further, in the first embodiment, the position adjusting plate 27 is provided between the mounting bracket 10 and the bracket 11, but it is needless to say that this can also be used in the second and third embodiments.

It is a partial side view of the state which attached the bracket in the base of Example 1 of this invention. It is a partial top view of the state which attached the bracket in the base of Example 1 of this invention. It is the perspective view which showed inserting a volt | bolt in the clearance gap of the rear side surface of the base of Example 1 of this invention. It is a perspective view of the state which locked the volt | bolt in the clearance gap of the rear side surface of the base of Example 1 of this invention. It is a perspective view of the attachment metal fitting used for Example 1 of this invention. It is a perspective view of the volt | bolt type locking piece used for Example 2 of this invention, and the volt | bolt which bored the through-hole in the head fixed to these hook type | mold locking pieces. It is a partial top view of the state which supported and fixed the mounting bracket of Example 2 of this invention to the base. It is a partial side view of the state which supported and fixed the mounting bracket of Example 2 of this invention to the base. It is a partial top view of the state which supported and fixed the mounting bracket of Example 3 of this invention. It is a perspective view of the plate body of the other example of Example 1 of this invention. It is a partial side view of the state which attached the bracket in the base of the other example of Example 1 of this invention. It is a partial front view of the state which accommodated and installed the disconnector in the conventional electric power supply side in an outer case, and a consumer side. It is a partial front view of the state which accommodated and installed the disconnector in the conventional electric power supply side in an outer box, and the switch in a consumer side.

Explanation of symbols

A Outer box B Disconnector C Switch 1 Cable 2 Plate 3 Bracket 4 Base 5 Clearance 6 Clearance 7 Bottom plate 8 Cable head 9 Bolt 10 Mounting bracket 11 Bracket 12 Nut 13 Bolt 14 Bolt 15 Nut 16 Locking piece 17 Bolt 18 Channel Type steel material 19 Angle type steel material 20 Mounting bracket 21 Hexagon bolt 22 Nut 23 Nut 24 Nut 25 Bolt 26 CV cable 27 Position adjusting plate

Claims (5)

An outer box that is installed on the ground and accommodates power distribution equipment inside, and the base on which the outer box is placed has four sides with front and rear sides butting two angle members, and a gap between the butted edges In the mounting structure of the bracket that consists of a frame and connects one end to the power distribution device, and supports and fixes the cable raised from the ground below the power distribution device.
A bolt head or a hook-shaped locking piece is locked to the outside of the base in a gap provided on the rear side of the base, and the bolt or hook-shaped locking piece is extended to the inside of the base. The support having a flat plate portion provided at an interval from the inside of the base is fixed, and the bracket or the position adjusting plate supporting the bracket is fixed to the flat plate portion of the support. The cable bracket mounting structure in the outer box that houses the power distribution equipment. As the bolt, a bolt having a head is used, and each screw portion of the two bolts is inserted into the gap of the base from the outside of the outer box, and the head of the bolt is inserted into the gap. The cable in the outer box housing the power distribution device according to claim 1, wherein the support is fixed to a threaded portion of each bolt that is locked and spaced inwardly protruding from the inner side of the outer box. Bracket mounting structure. The bolt has a head flat in one direction, and the two bolts from the inside of the outer box are placed at intervals between the gaps in the base so that each flat head is horizontal. After each insertion, the respective heads are rotated substantially at right angles to be locked in the gaps, and the support is fixed to the threaded portions of the respective bolts protruding inside the outer box with a space therebetween. The mounting structure of the cable bracket in the outer box which accommodated the power distribution apparatus of Claim 1. The hook-shaped locking piece uses an angle-shaped locking piece, and each one side piece of the two locking pieces is inserted into the gap of the base from the inside of the outer box so as to protrude to the outside of the base. The one side piece is arranged in a substantially straight line outside the base, and the other side piece of the two locking pieces in the base is overlapped to lock the locking piece in the gap of the base, Align the position of the through hole of the head of the bolt with a through hole in the head provided separately in each through hole provided in advance on the other side piece overlapped, and insert the bolt into these through hole and insert the nut Tighten and fix with another, provide another one in the gap with a gap,
The mounting structure of the cable bracket in the outer box containing the power distribution device according to claim 1, wherein the support is fixed to a screw portion of each bolt. The support body is formed by bending both end portions of a plate body to form stepped portions, and through-holes are provided in flat plate portions at both ends, and fixed to the through-holes through members extending inside the bolt base. The mounting structure of the cable bracket in the outer box which accommodated the power distribution apparatus of the said Claim 2 or 3 characterized by the above-mentioned.