JP4515661B2 - Storage frame for drawer-type electrical equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a storage frame for storing a drawer-type electrical device such as a drawer-type circuit breaker, a drawer-type instrument transformer, and a drawer-type lightning arrester.
[0002]
[Prior art]
4 is a longitudinal sectional view schematically showing the configuration of a conventional switchgear, and FIG. 5 is a sectional view taken along line VV in FIG.
4 and 5, the switch gear 1 is configured such that electrical devices such as the circuit breaker 20 and the bus bar 21 are accommodated in predetermined positions in the housing 2 and the electrical devices are connected by electrical conductors.
The housing 2 is configured in a box shape by a floor plate 2a, a front door 2b, a pair of side plates 2c, a rear plate 2d, and a ceiling plate 2e each made of a metal plate. Further, steel column vertical columns 3 bent into a U-shape or an L-shape are fixedly installed by welding or the like at predetermined positions on both side edges of the floor plate 2a. Here, the vertical pillars 3 are provided in two places at both ends in the depth direction (left and right directions in FIGS. 4 and 5) and at two places in the middle in the depth direction, in the width direction (direction perpendicular to the plane of FIG. 5 in the vertical direction). The front door 2b, the side plate 2c, the rear plate 2d, and the ceiling plate 2e are fastened and fixed to the vertical column 3 by bolts, rivets, or the like. The internal space of the housing 2 is partitioned into a bus compartment 10, a circuit breaker compartment 11, a cable compartment 12, a control compartment 13, and the like by a partition member described later.
[0003]
A pair of L-shaped angles 4 arranged in parallel with each other at the same height position at a predetermined distance in the depth direction of the housing 2 with the longitudinal direction as the width direction of the housing 2 are arranged in two upper and lower stages. Each L-shaped angle 4 is fixed by welding at two predetermined positions of the vertical column 3 disposed opposite to each other at two positions in the intermediate portion of the housing 2 in the depth direction. It is constructed between the side plates 2c.
[0004]
The circuit breaker storage box 5 has a front plate opened by fixing a bottom plate 5a and a rear plate 5d made of a metal plate to an integrated body of a side plate 5b and a ceiling plate 5c formed by bending a metal plate into a U shape. It is made in a box shape. And the front side of the integrated body of the side plate 5b and the ceiling plate 5c is bent inward at a right angle to constitute the entrance / exit of the circuit breaker 20. Also, rails 5e are provided by bending both sides of the bottom plate 5a in the width direction into a U-shape. Further, the pair of connection terminals 22 are electrically insulated and disposed through the rear plate 5d. Then, the breaker storage box 5 is installed on the pair of the upper and lower L-shaped angles 4 with the opening facing the front side of the housing 2, and the bottom plate 5a is fastened to each L-shaped angle 4 with bolts or rivets. It is fixed.
[0005]
Further, the partition plate 6 is fixed to the vertical column 3 facing both ends by welding or bolts, rivets or the like and attached to the entire width of the housing 2, and the covers 7 are arranged on both sides of the circuit breaker storage boxes 5 in the width direction, and On both sides in the depth direction, the circuit breaker storage box 5 and the vertical column 3 are fixed to each other by welding or bolts or rivets. Thereby, the cable compartment 12 and the control compartment 13 are partitioned. The circuit breaker storage box 5 serves as a circuit breaker compartment 11. Moreover, the partition plate 8 and the partition plate 9 are attached to the whole width direction of the housing 2, and the bus-bar compartment 10 is divided. Furthermore, U-shaped frames 15a and 15b are attached to the partition plates 8 and 9 in the width direction of the housing 2, and insulators 23a and 23c are attached to the frames 15a and 15b, respectively.
[0006]
The circuit breaker 20 is a so-called drawer type circuit breaker in which wheels (not shown) are mounted on the lower surface side, and each circuit breaker storage box is made to travel while traveling on a rail 5e provided on the bottom plate 5a of the circuit breaker storage box 5. 5 is inserted and stored from the front side. And the connection terminal (not shown) provided in the rear surface of the circuit breaker 20 was provided in the rear surface plate 5d of the circuit breaker storage box 5 by completely inserting the circuit breaker 20 into the circuit breaker storage box 5. The pair of connection terminals 22 are fitted and electrically connected to each connection terminal 22.
Further, the bus bar 21 is disposed through the bus compartment 10 of the housing 2 in the width direction. One of a pair of connection terminals 22 provided on the rear surface of each circuit breaker storage box 5 is connected to the bus bar 21 via a power supply side branch conductor 24 insulated and supported by an insulator 23a.
[0007]
In the cable compartment 12, the other of the connection terminals 22 is connected to one end of the load-side branch conductor 25, and the other end of the load-side branch conductor 25 is connected to the cable 26. These load-side branch conductors 25 are insulated and supported by insulators 23b, 23c, and 23d. Further, each load-side branch conductor 25 penetrates the measuring instrument current transformer 27.
Further, in the control compartment 13, although not shown, an instrument such as an ammeter is disposed on the front door 2b.
[0008]
Here, if the line voltage needs to be measured and cannot be directly connected to the instrument due to the high voltage, the instrument is transformed into a low voltage proportional to the line voltage using the instrument transformer, and the instrument is isolated while isolating the high voltage. Will be bound to. In addition, a circuit breaker may be used to limit impact overvoltage due to lightning or circuit opening / closing, to protect the insulation of the device, and to interrupt the continuity in a short time. Such instrument transformers and circuit breakers are also housed in the housing 2.
[0009]
[Problems to be solved by the invention]
As described above, in the conventional switchgear, the drawer type circuit breaker 20 is housed in the circuit breaker housing box 5 and housed in the housing 2. The circuit breaker storage box 5 is placed on a pair of L-shaped angles 4 fixed at both ends to two vertical columns 3 erected on the floor plate 2 a of the housing 2, and the bottom surface of each of the L-shaped angles 4 Further, front and rear in the depth direction and both sides in the width direction are fixed to the vertical pillar 3 via the cover 7 and attached.
Therefore, the number of parts of the support member composed of the L-shaped angle 4 and the cover 7 and the fastening members such as bolts and rivets necessary for attaching the circuit breaker storage box 5 increases, and the circuit breaker storage box 5 As a result, it takes time to mount the switch gear, and the assemblability of the switch gear is lowered, and the cost increases as the number of parts increases.
Further, since the circuit breaker storage box 5 is fixed to the support member at the bottom, front and rear surfaces thereof, the fastening direction is different at each fixing part, the fastening workability is lowered, and the circuit breaker storage box 5 is installed in a long time. It will take.
[0010]
The present invention has been made to solve the above-described problems. The support member is cantilever-supported, the number of parts of the support member and the fastening member is reduced, the mounting time is shortened, and the cost is low. It is an object of the present invention to provide a storage frame for a drawer-type electrical device that can be realized.
[0011]
[Means for Solving the Problems]
Housing frame of drawer-type electric device according to the invention, from the respective rear side a pair of side plates and a bottom plate having a fixing hole formed in the bent formed shape has been bent edges and said folded edges into an L-shape A steel plate storage frame that is formed in a U-shape and constitutes a storage space for a drawer-type electrical device, and both ends are fixed to the rear side of the pair of side plates, and are lined up and down. A pair of supports erected between the rear surfaces of the face plate, and the fastening member is passed through the fixing hole and the bent side is fastened and fixed to the supporting member so that the supporting member can be attached to the supporting member in a cantilevered state. The connection terminal is attached to the pair of support members, and the opening through which the circuit side connection conductor connected to the connection terminal is inserted is formed on the rear surface side of the bottom plate of the storage frame body. is there.
[0012]
The storage frame is formed by bending a single steel plate into a U shape .
[0013]
Further, the storage frame is formed in a U shape by connecting the lower ends of the pair of side plates and both sides of the bottom plate in the width direction .
[0014]
The pair of side plates is formed into a U shape by folding the pair of side plates into an L shape on the front side and the rear side, and the bottom plate is bent into an L shape on both sides in the width direction. It is formed into a shape.
[0015]
Further, at least three sides of the pair of side plates are bent in an L shape .
[0016]
The drawer-type electrical device storage frame according to the present invention comprises a pair of side plates and a bottom plate each having a bent side formed by bending the rear side into an L shape and a fixing hole formed in the bent side. Steel frame storage frames that are formed in a letter shape and constitute a storage space for a drawer-type electrical device, and both ends are fixed to the rear side of the pair of side plates, and the pair of side plates aligned vertically And a pair of supports erected between the rear surface sides, the fastening member is passed through the fixing hole, and the bent side is fastened and fixed to the supporting member so as to be attached to the supporting member in a cantilevered state. The storage frame is configured by bending a single steel plate into a U-shape .
[0017]
In addition, U-shaped rails for running the wheels of the drawer-type electrical device extend in the depth direction on both sides in the width direction of the bottom plate of the storage frame, and the holes for fixing the drawer-type electrical device have the bottom plate It is drilled in.
[0018]
Further, the insulator for supporting the branched conductor is attached to the pair of side plates.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a perspective view showing a storage frame for a drawer-type electrical device according to Embodiment 1 of the present invention, and FIG. 2 is a diagram illustrating a storage frame for a drawer-type electrical device according to Embodiment 1 of the present invention in a switchgear housing. FIG. 3 is a perspective view showing a state in which the drawer-type circuit breaker is housed in the storage frame of the drawer-type electrical apparatus according to Embodiment 1 of the present invention. In FIG. 2, for convenience of explanation, the front door, the side plate, the rear plate, the ceiling plate, and the like are omitted.
[0020]
In FIG. 1, the storage frame 30 is fixed between a bottom plate 31, a pair of side plates 32 whose lower sides are fixed to both sides in the width direction of the bottom plate 31, and both ends fixed between rear sides in the depth direction of the pair of side plates 32. And a pair of support members 33 arranged in parallel in the vertical direction, and a connection terminal 34 fixed to each support member 33. The connection terminal 34 is formed by bending a copper strip into an L shape, and is plated on the entire surface, and has a hole 34a for connecting the power supply side and load side branch conductors (circuit side connection conductors). It has been drilled.
[0021]
The bottom plate 31 is manufactured by bending a flat steel plate into a predetermined shape, U-shaped rails 31a are extended in the depth direction at both ends in the width direction, and an interlock insertion hole 31b is formed in the main surface (bottom surface). Further, a mounting hole 31c is formed in the upright side of the rail 31a.
The side plate 32 is manufactured by bending three sides of a rectangular flat steel plate into an L shape, fixing holes 32b are formed above and below the bent side 32a on the rear surface side, and the mounting holes 32c are in the depth direction at the lower part of the main surface. The support attachment holes 32d are formed in the upper part and the central part on the rear surface side of the main surface. An insulator mounting hole 32e is formed at a predetermined position on the main surface.
The support 33 is a rod-shaped body made of an insulating resin such as saturated polyester, for example, and an L-shaped connection terminal 34 is fastened and fixed by a mounting screw.
[0022]
To assemble the storage frame 30 configured in this manner, first, the pair of side plates 32 are directed to both sides in the width direction of the bottom plate 31 with the L-shaped bent side 32a facing outward, and the bolts 35 are attached to the mounting holes 32c, The nut 36 is fastened to the extended portion of the bolt 35 through the 31c. Thus, the pair of side plates 32 are fixed to the bottom plate 31 so as to face each other in parallel to form a U-shaped storage frame. This U-shaped storage frame constitutes a storage space for the drawer-type circuit breaker 20. Further, the bottom plate 31 is formed with a short length in the depth direction, and forms an opening 50 through which the power supply side and load side branch conductors connected to the connection terminal 34 are inserted. Next, the support tool 33 is put between the pair of side plates 32, and the support tool 33 is fastened and fixed by passing the mounting screw 37 through the support tool mounting hole 32d. Thereby, the storage frame 30 is assembled.
[0023]
Next, attachment of the storage frame 30 assembled in this way to the switch gear housing will be described with reference to FIG.
In FIG. 2, for convenience of explanation, the switchgear housing 40 has a frame body 41 and two steel plate longitudinally formed at two adjacent corners of the frame body 41 and bent into an L shape. Only the column 42 and the rear plate 43 attached to the two vertical columns 42 are described. Actually, the housing 40 is vertically installed with vertical columns 42 fixed to the four corners of the frame body 41 by welding, the frame body 41 is placed on the bottom plate, and is fastened and fixed by fastening members such as bolts and rivets. Further, the front door, the side plate, the rear plate 43 and the ceiling plate are configured to be fastened and fixed to the vertical column 42 by fastening members such as bolts and rivets. A U-shaped steel plate frame 44 is fixed to the inner wall surface of the rear plate 43 by a predetermined distance in the width direction with respect to the vertical column 42 and fixed in parallel with the vertical column 42 by fastening members such as bolts and rivets. Yes.
[0024]
Therefore, the storage frame 30 is placed so that the front door is directed upward, the housing 40 is tilted, the front door is opened, and the bent sides 32 a of the pair of side plates 32 are placed on the vertical columns 42 and the frame 44. . The bolt 38 is passed from above through the fixing hole 32b of the bent side 32a, the mounting hole 42a formed in the vertical column 42, and the mounting hole 44a formed in the frame 44, and the nut 39 extends from below. Fastened to the outlet and attached to the housing 40. FIG. 2 shows a state where the housing 40 to which the storage frame 30 is attached is erected. Here, the vertical column 42 and the frame 44 correspond to the support member of the storage frame 30, and the bolt 38 and the nut 39 correspond to the fastening member of the storage frame 30.
[0025]
After the storage frame 30 is attached to the housing 40 in this manner, the wheel 20a having the circuit breaker 20 as a drawer-type electrical device mounted on the lower surface side enters the rail 31a provided on the bottom plate 31 of the storage frame 30. Are inserted from the front side of the storage frame 30. And the circuit breaker 20 is accommodated in the storage frame 30 while the wheel 20a travels in the rail 31a. Then, by completely inserting the circuit breaker 20 into the storage frame 30, a connection terminal (not shown) provided on the rear surface of the circuit breaker 20 is connected to the connection terminal 34 mounted on the support 33 of the storage frame 30. The connection terminals 34 are electrically connected to each other. Furthermore, an interlock (not shown) is inserted into the interlock insertion hole 31b from below, and the breaker 20 is positioned and fixed. Thereby, the circuit breaker 20 is stored in the storage frame 30 as shown in FIG.
[0026]
Here, in FIG. 3, the insulator 45 for supporting the power supply side branch conductor and the load side branch conductor is attached to the side plate 32 using the insulator mounting holes 32 e formed in the side plate 32 of the storage frame 30. The state is shown.
Although not shown, like a conventional switchgear, electrical devices such as a bus and an ammeter are accommodated in a predetermined position in the housing 40, and the bus and the circuit breaker 20 are connected to the power supply side via the connection terminal 34. The connection terminal 34 is electrically connected to the cable via the load-side branch conductor. The power supply side and load side branch conductors are guided from the insulator 45 through the lower surface of the storage frame 30 into the storage frame 30 through the opening 50, and mounting bolts and nuts are inserted into holes 34a formed in the connection terminals 34. (Not shown) is fastened and fixed.
[0027]
According to the first embodiment, the fixing hole 32b is formed in the bent side 32a formed by bending the rear side of the pair of side plates 32 of the storage frame 30 outward in the width direction in an L shape, and the bolt 38 is attached. The fixing hole 32 b is passed through the mounting hole 42 a of the vertical column 42 and the mounting hole 44 a of the frame 44, the nut 39 is fastened to the extending portion of the bolt 38, and the storage frame 30 is supported by the vertical column 42 and the frame 44. It is attached to. Therefore, the support member composed of the frame 4 and the cover 7 which is necessary for mounting the conventional circuit breaker storage box 5 becomes unnecessary, the number of parts of the support member is reduced, and the number of parts of the fastening member is also reduced. The mounting time of the frame 30 is shortened and the cost is reduced. Further, since the interlock insertion hole 31b is formed in the main surface of the bottom plate 31, after the circuit breaker 20 is stored, the interlock is inserted into the interlock insertion hole 31b from the lower surface side to bring the circuit breaker 20 into a predetermined position. It can be fixed easily.
[0028]
Further, since only the bent side 32a formed on the rear surface side of the pair of side plates 32 is fixed to the vertical column 42 and the frame 44, the fastening direction of the bolt 38 becomes one direction and the fastening workability is improved. As a result, the installation time of the storage frame 30 is shortened accordingly. Furthermore, since the fastening direction of the bolts 38 is one direction, the storage frame 30 can be attached in a state where the housing 40 is laid sideways with the front door facing upward, and the attachment workability is improved.
Further, since the three sides of the pair of side plates 32 are bent in an L shape, the mechanical strength of the storage frame 30 is ensured.
[0029]
Moreover, since the storage frame 30 is comprised from the baseplate 31, a pair of side plate 32, and the support tool 33 which connects and integrates between the side plates 32, the structure of the storage frame 30 is simplified and weight-reduced. Is reduced, and the mounting work load of the storage frame 30 is reduced.
Further, since the insulator 45 that supports the power-side branch conductor and the load-side branch conductor is attached to the side plate 32, the frames 15a and 15b, which are conventionally required, become unnecessary, and further, as described above, A support member made up of the frame 4 and the cover 7 required for mounting the circuit breaker storage box 5 becomes unnecessary, and the number of components of the housing 40 can be reduced. As a result, access to the external contact point of the switchgear is facilitated, and cable installation during installation and daily maintenance inspection can be easily performed. Furthermore, the degree of freedom of the configuration layout in the housing 40 is increased.
[0030]
In the first embodiment, the pair of side plates 32 are formed by bending three sides of a rectangular flat plate-shaped steel plate into an L shape. However, the pair of side plates is a rectangular flat plate-shaped steel plate. Two sides may be bent into an L shape and formed into a U shape. In this case, it joins with the baseplate 31 so that a bending side may come to the front side and the rear side.
In Embodiment 1 described above, the bottom plate 31 and the pair of side plates 32 constituting the storage frame are configured as separate members, but the storage frame is formed by bending one steel plate into a U-shape. You may make it. In this case, connection between the bottom plate 31 and the pair of side plates 32 is not necessary, and the assemblability and mechanical strength are improved.
In the first embodiment, the rail 31a is formed by bending both ends in the width direction of the bottom plate 31 into a U-shape, but the rail material obtained by bending the steel plate in a U-shape is formed at both ends in the width direction of the bottom plate, Or you may make it attach to the lower end side of a pair of side plate by a screw | thread or welding.
[0031]
In the first embodiment, the storage frame 30 stores the circuit breaker 20. However, the electrical device to be stored is not limited to the circuit breaker 20, and the electrical device (drawer) with wheels attached thereto. Needless to say, it can be applied to, for example, an instrument transformer or a lightning arrester equipped with wheels.
[0032]
In the first embodiment, the pair of side plates 32 are fastened and fixed to the bottom plate 31 by using bolts 35 and nuts 36. However, the pair of side plates 32 are fixed to the bottom plate 31 by welding. You may do it.
In the first embodiment, three sides of the pair of side plates 32 are bent in an L shape, but four sides of the pair of side plates 32 may be bent in an L shape.
[0033]
In the first embodiment, the connection terminal 34 is fastened and fixed to the resin support 33. The connection terminal 34 is formed integrally with the resin insulation support 33 by molding. Also good.
In the first embodiment, the support 33 is made of an insulating resin. However, the support need not be made of an insulating resin. For example, the support may be made of metal. . In this case, the connection terminal 34 may be attached to the support with an electrical insulating material interposed.
[0034]
【The invention's effect】
According to the invention, it is molded, respectively the rear surface side in a U-shape and a pair of side plates and a bottom plate having a fixing hole formed in the formed shape has been bent edges and said folded edges are bent into an L-shape A storage frame made of steel plate that constitutes a storage space for a drawer-type electrical device, and both ends are fixed to the rear side of the pair of side plates, and are arranged between the rear sides of the pair of side plates side by side and a is a pair of support is composed of fastening member to be attached to the support cantilevered state by the support member by fastening fixing the folded edge to the support member through the fixing hole, the connecting terminal Since the opening that is attached to the pair of support members and through which the circuit-side connection conductor connected to the connection terminal is inserted is formed on the rear surface side of the bottom plate of the storage frame body, the parts of the support member and the fastening member The number of points is reduced and the installation time is reduced. It is possible to reduce the shrinkage and cost reduction, introduction into the receiving frame body connecting conductor is facilitated, housing frame of drawer-type electric device connected workability to the connection terminal of the connection conductor is improved is obtained .
[0036]
In addition, since the storage frame is formed by bending a single steel plate into a U shape, the number of parts is reduced, and assemblability and mechanical strength are improved.
[0037]
In addition, since the storage frame body is formed in a U shape by connecting the lower end side of the pair of side plates and the both sides in the width direction of the bottom plate, the pair of side plates and the bottom plate can be individually manufactured. A great degree of shape freedom is obtained.
[0038]
The pair of side plates is formed into a U shape by folding the pair of side plates into an L shape on the front side and the rear side, and the bottom plate is bent into an L shape on both sides in the width direction. Therefore, the mechanical strength of the storage frame is increased.
[0039]
Further, since at least three sides of the pair of side plates are bent in an L shape, the mechanical strength of the storage frame is further increased.
[0040]
In addition, U-shaped rails for running the wheels of the drawer-type electrical device extend in the depth direction on both sides in the width direction of the bottom plate of the storage frame, and the holes for fixing the drawer-type electrical device have the bottom plate Therefore, it is easy to put in and take out the drawer-type electric device and to fix the drawer-type electric device.
[0041]
In addition, since the branch conductor supporting insulator is attached to the pair of side plates, a supporting member for the branch conductor supporting insulator is not required.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a storage frame of a drawer-type electric device according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view showing a state in which the storage frame of the drawer-type electrical device according to Embodiment 1 of the present invention is attached in the housing of the switch gear.
FIG. 3 is a perspective view showing a state in which the drawer-type circuit breaker is housed in the housing frame of the drawer-type electrical apparatus according to Embodiment 1 of the present invention.
FIG. 4 is a longitudinal sectional view schematically showing a configuration of a conventional switch gear.
5 is a cross-sectional view taken along arrow VV in FIG. 4;
[Explanation of symbols]
20 circuit breaker (drawer type electrical equipment), 20a wheel, 30 storage frame, 31 bottom plate, 31a rail, 31b interlock insertion hole, 32 side plate, 32a bent side, 32b fixing hole, 33 support, 34 connection terminal, 42 Vertical column (support member), 44 frame (support member), 38 bolt (fastening member), 39 nut (fastening member), 50 opening.

Claims (8)

They are formed respectively rear side in a U-shape and a pair of side plates and a bottom plate having a fixing hole formed in the formed shape has been bent edges and said folded edges are bent into an L-shape, the draw-out type electrical equipment A storage frame made of steel plate that constitutes a storage space, and a pair of support members that are fixed on the rear surface side of the pair of side plates, and both ends of the storage frame are arranged between the rear surface sides of the pair of side plates side by side. And
The fastening member is passed through the fixing hole, and the bent side is fastened and fixed to the support member, and can be attached to the support member in a cantilevered support state .
A drawer characterized in that a connection terminal is attached to the pair of supports, and an opening through which a circuit-side connection conductor connected to the connection terminal is inserted is formed on the rear surface side of the bottom plate of the storage frame. A storage frame for electrical equipment. 2. A storage frame for a drawer-type electrical device according to claim 1 , wherein the storage frame is formed by bending a single steel plate into a U-shape. 2. The drawer-type electrical apparatus according to claim 1 , wherein the storage frame is formed in a U shape by connecting a lower end side of the pair of side plates and both sides in the width direction of the bottom plate. Storage frame. The pair of side plates is formed into a U shape by folding the pair of side plates in an L shape on the front side and the rear side, and the bottom plate is bent in an L shape on both sides in the width direction. 4. The drawer-type electrical equipment storage frame according to claim 3 , wherein the storage frame is formed. 4. The drawer-type electrical device storage frame according to claim 1 or 3, wherein at least three sides of the pair of side plates are bent in an L shape. A drawer-type electrical device is housed in a U-shape formed from a pair of side plates and a bottom plate each having a bent side formed by bending the rear surface side into an L shape and a fixing hole formed in the bent side. A steel plate storage frame that constitutes a space, and a pair of support members that are fixed to the rear surface side of the pair of side plates, both ends of which are arranged on both sides of the pair of side plates. With
The fastening member is passed through the fixing hole, and the bent side is fastened and fixed to the support member, and can be attached to the support member in a cantilever support state.
The storage frame for a drawer-type electrical apparatus, wherein the storage frame is formed by bending a single steel plate into a U-shape. U-shaped rails for running the wheels of the drawer-type electrical device extend in the depth direction on both sides of the bottom plate in the width direction of the storage frame, and holes for fixing the drawer-type electrical device are drilled in the bottom plate. The drawer-type electrical device storage frame according to any one of claims 1 to 6, wherein the storage frame is provided. Housing frame of drawer-type electric device according to any one to claims 1 to 7 branching conductor supporting insulator is characterized by being mounted on the pair of side plates.

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