JP3756236B2 - Bus duct support fitting and bus duct support device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a support device for an insulated close-contact bus duct for an electric main line placed on a support frame, and supports a main body and a connecting portion with a double-use metal fitting so that it can safely cope with an impact such as an earthquake . The present invention relates to a support metal fitting and a bus duct support device.
[0002]
[Prior art]
Support / fixation of an insulation-contact type bus duct placed on a pedestal is conventionally performed only by the main body of the bus duct (for example, Japanese Utility Model Publication No. 58-38743, Japanese Utility Model Publication No. 51-12999, etc.). .
[0003]
FIG. 7 is a typical example of a conventional support device. FIG. 7A is a front view of the main body of the insulating close-contact type bus duct using the support fitting 2 shown in FIG. 8, and FIG. It is an aa 'arrow side view of metal fitting 2 part. The bus duct BD is placed on the channel 1, and the support metal fittings 2 are paired with the butterfly bolts B and B protruding from the channel 1 on the left and right sides of the bent portions H and H on both sides of the bus duct BD main body housing C. 2, the nut N is screwed through the lower piece portion 3, and the inner side surfaces of the leg piece portions 4 of the support fittings 2, 2 are respectively connected to the outer side surfaces of both side bent portions E, E of the bus duct main body housing C. The lower piece 3 is tightened with a nut N so as to support the bus duct BD. T is a bolt suspended from the building, 5 is an upper piece, and 6 is a hanging part.
[0004]
[Problems to be solved by the invention]
In general, the connection portion in the insulated close-contact type bus duct swells to the full width of the upper and lower plates of the housing regardless of the overlapping connection method between the bus duct conductor ends or the butt connection method via the conductive contact plate. In addition, since a cover plate is attached to the upper and lower openings of the bus duct connecting portion, the end bending height of the lower portion of the housing is increased by the plate thickness. Therefore, as in the above-described conventional example, the support brackets 2 and 2 attached using the space between the side plate outer surface of the main body housing C and the both side bent portions E and E of the lower end of the housing are attached to the connection portion. The fact is that it cannot be used and therefore does not support anything.
[0005]
In a heavy-duty bus duct with a heavy capacity, the heaviest connection in the bus duct electrical circuit is deflected due to its own weight during an earthquake, which promotes shaking during the earthquake, damages the support device in the bus duct body, and the bus duct falls. There is a risk of power failure.
[0006]
In view of the above-mentioned problems that have been avoided from the workability and structural aspects of the conventional support device in the insulated contact type bus duct, the present invention provides an easy and efficient support in the main body and the connection of the housing. An object of the present invention is to provide an apparatus and to eliminate the above-mentioned conventional drawbacks.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a substantially Z-shaped plate-shaped member comprising a lower piece portion, a leg piece portion, and an upper piece portion, and the upper piece portion of the member with respect to the width direction. It is divided into a plurality of pieces at right angles, and at least one piece is used as a support fitting for a bus duct which is a projecting piece located above the other divided piece by the thickness of the member, and the other divided piece is further lowered into a substantially L shape. The upper piece portion and the locking piece are bent. Further, in the bus duct support device using the bus duct support fitting, the leg piece, wherein the lower piece portion is fixed to a support frame, and the other divided piece is in contact with the upper surface of the bus duct end bent portion of the bus duct body portion. The bus duct end bent portion of the bus duct main body portion is positioned between the portion and the locking piece, and the protruding piece contacts or engages the housing of the bus duct connecting portion, and the outer surface of the locking piece is the connecting portion It is configured to abut against the outer side surface of the end bent portion of the cover or to engage the edge of the end bent portion of the connection cover plate of the bus duct connecting portion.
[0008]
[Action]
In the first aspect of the present invention, in the bus duct main body portion, the housing end bent portion is positioned between the leg piece portion and the locking piece of the support bracket, and the lower piece portion is fixed to the support frame, thereby Lateral movement is suppressed by fine movement between the inner side surfaces of the leg piece portion and the locking piece of the support fitting. Further, the vertical movement of the main body is suppressed by the upper piece of the support bracket or the lower end of the locking piece and the support frame. In the bus duct connection part, the projecting piece located above the upper part of the support bracket is in contact with the outer surface of the housing connection side plate or engaged with the edge of the connection part cover plate. At the same time, the movement of the connecting portion is effectively suppressed by contacting the outer surface of the connecting side plate and fixing the lower piece to the support frame. As described above, it is a support device that is easy to handle and robust, and can be used as a single type of fixing bracket at any point along the entire length of the bus duct electric circuit.
[0009]
According to a second aspect of the present invention, in addition to the operation of the first aspect, the connection portion is supported by the outer surface of the end portion bent portion of the connection portion cover plate by the outer surface of the locking piece of the support fitting, thereby supporting the connection portion. Increase.
[0010]
【Example】
The configuration of the bus duct support device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a use state of a bus duct support device according to the present invention, in which a support base 11 consisting of a channel is horizontally attached to a bolt T suspended from a building, and a bus duct BD is placed in the center of the main body. The inner side surface of the leg piece portion 14 of the support fitting 12 shown in FIG. 2 is brought into contact with the outer surface of the lower end bent portions E and E of the lower housing C. Further, the protruding piece 17 of the support fitting 12 is in contact with the outer surface of the connection side plate 22 of the connection portion housing 21.
[0011]
The structure of the support fitting 12 is a substantially Z-shape comprising a lower piece portion 13, a leg piece portion 14, and an upper piece portion 5 provided with holes H for supporting and fixing the support frame 11 with butterfly bolts B and nuts N. The upper piece portion 5 of the plate-like member is divided into three at right angles to the width direction, and the central piece is formed as a protruding piece 17 positioned substantially above the thickness of the member, so that the lower cover plate 23 of the connecting portion is It escapes the height of the end bent portion 24 that increases by the thickness. The two divided pieces located on both sides are bent downward in a substantially L shape to constitute upper pieces 15 and 15 and locking pieces 16 and 16.
The plate thickness of the support metal fitting is usually 2.0 mm to 3.2 mm, but is appropriately selected as necessary.
[0012]
Although the mounting position of the support metal 12 in the width direction is different between the main body portion and the connection portion of the bus duct, in the above-described embodiment, since it is configured to be attached to the support base 11 formed of a channel, the lower piece portion 13 of the support metal 12 is attached. Along with the butterfly bolts B and nuts N to be fixed, they are moved back and forth along the channel grooves and moved to a predetermined position for attachment. When the support frame 11 has an L-shaped angle or the like and is individually drilled, the drilling position is changed for the main body and the connection part, or as shown by the chain line in FIG. This can be dealt with by forming a long hole in the width direction of the bus duct.
[0013]
FIG. 3 is a front view showing the support device for the main body shown in FIG. 1, and the inner side surfaces of the leg pieces 14 of the support fitting 12 are formed on both outer side surfaces of the end bent portions E and E of the bus duct main body housing C. The butterfly bolt B which is in contact with and is inserted into the hole H provided in the lower piece 13 and engaged with the support frame 11 made of a channel is inserted and fixed to the support frame 11 with a nut N. Thereby, the main-body part of bus duct BD is firmly supported from both sides.
[0014]
The lower end bent portions E and E of the main body housing C are not limited to the above-described embodiment, and may be located between the leg piece portion 14 and the locking piece 16 of the support fitting 12. The length of the locking piece 16 is appropriate as long as it has a retaining action by engaging with the end bent portion E of the main body housing when the bus duct is laterally displaced.
[0015]
FIG. 4 is a front view showing the connecting device supporting device of FIG. 1, and the protruding pieces 17 of the supporting metal fitting 12 are brought into contact with both outer side surfaces of the connecting side plate 22 of the bus duct connecting portion housing 21 as in FIG. The lower piece 13 of the support metal 12 is fixed to the support frame 11. As a result, the connecting portion of the bus duct BD is firmly supported from both sides by the same support fitting 12 as that of the bus duct main body. Further, by adjusting the height dimension of the leg piece portion 14 of the support fitting 12, the projecting piece 17 abuts on the connection side plate of the bus duct connection portion as described above, and at the end bent portion 24 of the connection portion cover plate 23. A solid support is obtained that engages the edges and also prevents the bus duct connection part from moving upwards.
[0016]
FIG. 5 is an enlarged front view of the main part showing the second support device for the bus duct connection part, and at the same time when the projecting piece 17 of the support fitting 12 comes into contact with the outer surface of the connection side plate 22, the end part of the connection part cover plate 23 is bent. The length of the projecting piece 17 is shortened so that the outer surface of the locking piece 16 contacts the outer surface of the end bent portion 24 of the connection portion cover plate 23. In the same manner as described above, this is a device for fixing the lower piece 13 of the support fitting 12 to the support base 11. Thereby, the connection part of bus duct BD is contact-supported in two places, the outer surface of the connection side board 22, and the outer surface of the edge part bending part 24 of the connection part cover board 23, and a support effect increases.
[0017]
FIG. 6 is a perspective view showing another configuration example of the support fitting 12 according to the present invention. (A) The configuration is such that the upper piece portion 5 of the substantially Z-shaped plate member is divided into two parts, and the hanging portion 16 and the protrusions are divided. The support bracket 12 is formed with one piece 17 each, and (b) is configured by dividing the upper piece 5 of the substantially Z-shaped plate-like member into four parts, and two hanging parts 16 and two projecting pieces 17 each. It is the formed support fitting 12. In addition, the number of divisions is appropriately set in consideration of the strength of the entire support fitting 12.
[0018]
【The invention's effect】
Since the present invention is a support bracket or a support device having the above-described configuration, (1) regardless of the main part and connection part of the bus duct electric circuit, it can be used as a single type of fixing bracket at a required length of the entire length, and is low-cost and robust. A simple support device.
(2) In heavy-duty bus ducts with large capacity trunk lines, the heavy weight of the bus duct circuit prevents deflection of the heaviest connection in the bus duct circuit due to its own weight, and does not promote the shaking during the earthquake. Improve sexiness.
(3) Installation is easy and efficient, and workability is good.
Is very effective and rational thing an effect such.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of a bus duct support device according to the present invention.
FIG. 2 is a perspective view of an embodiment of a support metal fitting according to the present invention.
FIG. 3 is a front view showing a bus duct main body support device according to the present invention.
FIG. 4 is a front view showing a support device for a bus duct connecting portion according to the present invention.
FIG. 5 is a main part enlarged front view showing a second support device of a bus duct connecting part according to the present invention.
FIG. 6 is a perspective view of another configuration example of the support metal fitting according to the present invention.
FIG. 7 is a front view (a) showing a conventional bus duct support device and a side view (b) taken along the line aa ′ of the support metal part.
FIG. 8 is a perspective view showing a support fitting used in FIG. 7;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,11 Support stand 2,12 Support metal fitting 3,13 Lower piece part 4,14 Leg piece part 5,15 Upper piece part 6 Hanging part 16 Locking piece 17 Projection piece 21 Connection part housing 22 Connection side plate 23 Connection part cover plate 24 Bending part B of connecting part cover plate Butterfly bolt BD Bus duct C Body part housing E Body part housing bending part H Hole N Nut T Bolt

Claims (7)

A substantially Z-shaped plate-shaped member comprising a lower piece, a leg piece and an upper piece, wherein the upper piece of the member is divided into a plurality of pieces perpendicular to the width direction, and at least one of the pieces is divided. A support fitting for a bus duct, which is a projecting piece positioned approximately the thickness of the member above the other divided pieces. 2. The bus duct support bracket according to claim 1, wherein the other divided pieces are bent downward in a substantially L shape to form an upper piece portion and a locking piece. The bus duct support metal fitting according to claim 1 or 2, wherein the lower piece portion of the bus duct support fitting is fixed to a support frame, and the other divided piece is brought into contact with the upper surface of the bent portion of the bus duct main body portion. apparatus. The lower piece of the support fitting for the bus duct according to claim 2 is fixed to a support frame, and a bent portion of the bus duct end portion of the bus duct main body is positioned between the leg piece and the locking piece. Bus duct support device. 3. A bus duct support device according to claim 1, wherein the lower piece of the bus duct support metal fitting is fixed to a support frame, and the protrusion is brought into contact with or engaged with the housing of the bus duct connecting portion. 3. The bus duct support metal fitting according to claim 2, wherein the lower piece portion of the bus duct support metal fitting is fixed to a support frame, and the outer side surface of the locking piece abuts on the outer side surface of the bent end portion of the connection portion cover. apparatus. The said lower piece part of the support metal fitting of the bus duct of Claim 1 or 2 is fixed to a support stand, The said protrusion engages with the edge of the edge part bending part of the connection cover board of a bus duct connection part, It is characterized by the above-mentioned. Support device for the bus duct.

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