JPH09215159A - Support for bus duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fixing between the housing body part and a connecting part by locating the housing end bent part of bus duct body part between the leg piece part of a supporting metal fitting and a stop piece, abutting the projecting piece of supporting metal fitting against the housing at the joint of bus duct, securing the lower piece part of each supporting metal fitting to a supporting frame. SOLUTION: A supporting frame 11 made of channel is fixed horizontally to a bolt T suspended from a building and a bus duct BD is mounted in the center thereof so that the inner side face at the leg part 14 of supporting metal fitting 12 abuts against the outer side face of bent parts E, E at the opposite ends on the lower side of body part housing C. Similarly, the projecting piece 17 of supporting metal fitting 12 abuts against the outer side face of a jointing side plate 22 of housing 21 at jointing part. A butterfly bolt locked to the supporting frame 11 of channel is inserted into a hole made through a lower piece part 13 and secured to the supporting frame 11 by means of a nut. Consequently, the body part of bus duct BD is supported firmly from the opposite sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting device for an insulated contact bus duct for an electric main line, which is mounted on a supporting stand, and supports a main body and a connecting portion with metal fittings that are also used to prevent an impact such as an earthquake. Also relates to a support device for a bus duct that can be dealt with safely.

[0002]

2. Description of the Related Art Conventionally, supporting and fixing of an insulation-adhered bus duct mounted on a pedestal has been 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 publication).

FIG. 7 shows a typical example of a conventional supporting device.
FIG. 9 is a front view of the main body of the insulative close contact type bus duct supported by using the support fitting 2 shown in FIG. 8, and (B) is a side view of the support fitting 2 portion of (a) above, taken along the line aa ′. Bus duct B
D is placed on the channel 1, and the pair of support fittings 2.2 are attached to the wing bolts B and B that engage with the channel 1 and project to the left and right of the both-side bent portions H and H of the body C of the bus duct BD. The nut N is screwed through the lower piece 3 and the inner side surfaces of the leg pieces 4 of the support fittings 2 and 2 are brought into contact with the outer side surfaces of the both-side bent portions E and E of the bus duct body housing C, respectively. In contact with each other, the lower piece 3 is tightened with the nut N 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]

Generally, the connection portion of the insulating contact type bus duct is within the width of the upper and lower plates of the housing regardless of the superposition connection method of the end portions of the bus duct conductors or the butt connection method via the conductive pad. It swells to the fullest extent. Also, since the cover plate is attached to the upper and lower openings of the bus duct connecting portion,
The end fold height at the bottom of the housing increases. Therefore, as in the above-mentioned conventional example, the support metal fittings 2 and 2 to be mounted by utilizing the space between the side plate outer surface of the main body housing C and the both-side bent portions E of the housing lower plate end are
The reality is that it cannot be used in the connection and therefore does not carry any support.

In a heavy-duty bus duct with a large-capacity main line, the heaviest connection portion in the bus duct circuit runs due to its own weight during an earthquake, which promotes shaking during an earthquake and damages the supporting device in the main body of the bus duct. The bus duct may fall over and lead to a power failure.

In view of the above-mentioned problems that have been avoided from the viewpoint of workability and structure of the conventional supporting device in the insulating contact type bus duct, the present invention is easy and efficient to install in the main body portion and the connecting portion of the housing. The purpose of the present invention is to provide a general support device and to eliminate the above-mentioned conventional drawbacks.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a lower piece, a leg piece and an upper piece.
A plate-shaped member, a top piece of the member is divided into a plurality of pieces at right angles to the width direction, and at least one piece is located above by about the thickness of the member; Is bent downward into a substantially L shape to form an upper piece and a locking piece, and a housing end bent portion of the bus duct body is located between the leg piece and the locking piece of the metal fitting. Is a support device for a bus duct in which the lower piece portions of the support fittings are fixed to the support base by abutting or engaging the protruding pieces of the above with the housing of the bus duct connection portion. A supporting device for a bus duct using a support fitting configured such that the projecting piece abuts or engages the connecting portion housing and the outer surface of the locking piece abuts the outer surface of the end bent portion of the connecting portion cover plate. Is.

[0008]

In the first aspect of the present invention, in the bus duct main body, the housing end bent portion is positioned between the leg piece and the locking piece of the support fitting, and the lower piece is fixed to the support frame. The lateral movement of the main body is restrained by fine movement between the inner side surfaces of the leg pieces of the support fitting and the locking pieces. Further, the vertical movement of the main body is restrained by the upper half of the support fitting or the lower end of the locking piece and the support base. At the bus duct connection part, the projecting piece located above the upper part of the support fitting by the wall thickness abuts the outer surface of the housing connection side plate, or engages with the edge part of the end part bent part of the connection part cover plate. In addition, by contacting the outer side surface of the connection side plate and fixing the lower piece portion to the support frame, the movement of the connection portion is effectively suppressed. As described above, one kind of fixing metal fitting can be used at any place along the entire length of the bus duct electric path, and the support device is easy to handle and solid.

According to a second aspect of the present invention, in addition to the function of the first aspect, the outer surface of the end portion bent portion of the connection portion cover plate is supported by the outer surface of the locking piece of the support fitting. Increase the supportive effect of.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a bus duct supporting device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a usage state of a support device for a bus duct according to the present invention, in which a support frame 11 made of channels 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 in contact with the outer side surfaces of the lower end bent portions E of the partial 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.

The structure of the support metal fitting 12 is the same as that of the support base 11.
Hole H for supporting and fixing with butterfly bolt B and nut N
The upper piece portion 5 of the substantially Z-shaped plate-like member including the lower piece portion 13, the leg piece portion 14 and the upper piece portion 5 provided with is divided into three at right angles to the width direction, and the central piece is The lower cover plate 2 at the connecting portion is used as the protruding piece 17 positioned above by approximately the thickness of the member.
The height of the end bent portion 24, which is increased by the thickness of 3, is escaped. The two divided pieces located on both sides thereof are bent downward in a substantially L shape to form an upper piece portion 15 and a locking piece 16.1.
6. The thickness of the support bracket is usually 2.0 mm
It is up to 3.2 mm, but it is appropriately selected if necessary.

Although the mounting position of the support metal fitting 12 in the width direction is different between the main body portion and the connecting portion of the bus duct, in the above-described embodiment, the support metal fitting 12 is configured to be mounted on the support pedestal 11 made of channels. Part 13
Along with the butterfly bolt B and nut N for fixing, move it back and forth along the groove of the channel, move it to a predetermined position, and attach it.
When the support base 11 is an L-shaped angle or the like and is to be individually drilled, the drilling position is changed between the main body portion and the connection portion, or the lower piece portion 13 of the support metal fitting 12 as shown by the chain line in FIG. ,
This can be dealt with by forming elongated holes in the width direction of the bus duct.

FIG. 3 is a front view showing the support device for the main body portion of FIG. 1 described above. The leg piece portion 1 of the support metal fitting 12 is provided on both outer surfaces of the end bent portions E of the bus duct main body housing C.
4, the butterfly bolt B, which is in contact with the inner side surface of the base plate 4, is engaged with the supporting base 11 made of a channel to prevent it from coming off, is fixed to the supporting base 11 with the nut N. . Thereby, the main body of the bus duct BD is firmly supported from both sides.

Not limited to the above embodiment, the main body housing C
The lower end bent portions E, E are the leg pieces 1 of the support fitting 12.
It suffices if it is located between 4 and the locking piece 16. Locking piece 16
The length is appropriate as long as it has a function of engaging with the end bent portion E of the main body housing and preventing the slipping out when the bus duct is laterally displaced.

FIG. 4 is a front view showing the supporting device for the connecting portion of FIG. 1, in which the projecting pieces 17 of the supporting metal fitting 12 are brought into contact with both outer side surfaces of the connecting side plates 22 of the bus duct connecting portion housing 21. Similarly, the lower piece 13 of the support fitting 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 the bus duct main body portion. Further, by adjusting the height dimension of the leg piece portion 14 of the support fitting 12, the protruding piece 17
As described above, the solid contact with the connecting side plate of the bus duct connecting portion and the edge of the end bent portion 24 of the connecting portion cover plate 23 prevent the bus duct connecting portion from moving upward. Support is gained.

FIG. 5 is an enlarged front view of an essential part showing the second supporting device for the bus duct connecting portion.
At the same time as coming into contact with the outer side surface of the connection side plate 22, it engages with the end edge of the end bent section 24 of the connection section cover plate 23, and the outer side surface of the locking piece 16 further has the end section bent section 24 of the connection section cover plate 23. Is a device for fixing the lower piece portion 13 of the support fitting 12 to the support frame 11 in the same manner as described above by shortening the length of the projecting piece 17 so as to abut the outer side surface of the. As a result, the connection portion of the bus duct BD is abutted and supported at two locations on the outer surface of the connection side plate 22 and the outer surface of the end bent portion 24 of the connection portion cover plate 23, and the support effect is increased.

FIG. 6 is a perspective view showing another example of the structure of the support metal fitting 12 according to the present invention. In (a) structure, the upper piece 5 of the substantially Z-shaped plate member is divided into two parts, and the hanging part is formed. 16 and protrusion 17
In the configuration (b), the upper piece portion 5 of the substantially Z-shaped plate-like member is divided into four, and the hanging portion 16 and the projecting piece 17 are each formed into two pieces. Support bracket 1
2. In addition, the number of divisions is appropriately set in consideration of the strength of the entire support fitting 12.

[0018]

EFFECTS OF THE INVENTION Since the present invention is the supporting device having the above-described structure, (1) Regardless of the main body portion or the connecting portion of the bus duct electric path, one kind of fixing metal fitting can be used at a required portion of the entire length, which is low cost. Can provide a solid support device. (2) In a bus duct with a large capacity and heavy weight,
At the time of an earthquake, the weight of the bus duct prevents the heaviest connection part from bending in the bus duct electric line, and does not promote shaking during the earthquake, improving the safety of the entire bus duct electric line. (3) Easy to install, efficient, and easy to work with. It is an extremely effective and rational support device that produces the effects described above.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a support device for a bus duct according to the present invention.

FIG. 2 is a perspective view of an embodiment of a support fitting according to the present invention.

FIG. 3 is a front view showing a supporting device for a bus duct body according to the present invention.

FIG. 4 is a front view showing a supporting device for a bus duct connecting portion according to the present invention.

FIG. 5 is an enlarged front view of an essential part showing a second supporting device for a bus duct connecting portion according to the present invention.

FIG. 6 is a perspective view of another configuration example of the support fitting according to the present invention.

FIG. 7 is a front view (a) showing a conventional bus duct supporting device and a side view (b) of a supporting metal fitting portion taken along arrow aa ′.

FIG. 8 is a perspective view showing a support fitting used in FIG. 7.

[Explanation of symbols]

 1, 11 Support base 2, 12 Support metal fittings 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 Connection part Cover plate bent part B Butterfly bolt BD Bus duct C Body part housing E Body part bent part H hole N Nut T Bolt

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Toshiro Ishikawa 7-12-14 Chuo, Yamato City, Kanagawa Prefecture (72) Inventor Shoji Shimada 2-25-30 Higashitokura, Kokubunji City, Tokyo (72) Inventor Yukihiko Yamada Kanagawa Prefecture 1-12-6 Yanagibashi, Yamato City Inventor Yasuki Arai 8-4 Kamihiroya, Tsurugashima City, Saitama Prefecture (72) Inventor Yoshio Matsumoto 2-2-8 Koenji Kita, Suginami-ku, Tokyo (72) Inventor Hiroyuki Sugiyama Kanagawa 4215 Totsuka-cho, Totsuka-ku, Yokohama-shi, Japan (72) Inventor Shinji Uchida 1-3-21 Inodai, Toride-shi, Ibaraki (72) Inventor Yoshiyuki Takahashi 4-38-1 Yosawa, Setagaya-ku, Tokyo (72) Inventor Takeo Hayakawa 1-18-9 Honami-cho, Sakai-shi, Osaka Prefecture (72) Inventor Kazuto Hayajiri 4-13-10 Yanagibashi, Yamato-shi, Kanagawa Prefecture (72) Toshio Ichida 494-6 Kamioi, Oimachi, Ashigagami-gun, Kanagawa Prefecture ( 72) Inventor Katsuhiko Oguchi 2954-32, Zushimachi, Machida, Tokyo (72) Inventor, Hiroshi Tanaka, 5-11-25-406, Chuo, Yamato-shi, Kanagawa (72) Nobuyuki Ishii, 6-25-7, Kamirenjaku, Mitaka, Tokyo

Claims (2)

[Claims] 1. A substantially Z shape consisting of a lower piece, a leg piece and an upper piece.
A plate-shaped member, a top piece of the member is divided into a plurality of pieces at right angles to the width direction, and at least one piece is located above by about the thickness of the member; Is bent downward in a substantially L shape to form an upper piece portion and a locking piece, a housing end bent portion of the bus duct main body portion is located between the leg piece portion and the locking piece of the metal fitting, and A support device for a bus duct, characterized in that the projecting pieces of the metal fittings are brought into contact with or engage with the housing of the bus duct connecting portion, and the lower piece portions of the support metal fittings are fixed to the support frame. 2. In the bus duct connecting portion, the projecting piece of the support fitting abuts or engages with the connecting portion housing, and the outer surface of the locking piece contacts the outer surface of the end bent portion of the connecting portion cover plate. The bus duct support device according to claim 1, wherein the support device is a support fitting configured to come into contact with each other.