JPH0314902Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a drip-proof horizontal installation in which a plurality of strip-shaped insulated conductors are stacked one above the other by their strip surfaces and arranged in a drip-proof housing. The present invention relates to a connecting device for shaped insulated bus ducts.

[Conventional technology]

For example, a horizontally installed insulated bus duct with a drip-proof structure is recommended as an electrical main line in a ship.

This type of insulated bus duct covers the lower opening of the downward U-shaped housing body with a downward U-shaped cover plate, and a strip-shaped insulated conductor is placed between the upper and lower sides of the cover plate and the housing. Therefore, a structure is adopted in which multiple sheets are stacked and sandwiched one above the other. This is the best form for installation inside a narrow ship with good space factors.

Now, since such a horizontally installed insulated bus duct with a drip-proof structure is naturally a standard-length product, a line is constructed by connecting a plurality of standard-length units.

Japanese Utility Model Publication No. 51-8719 proposes a connection device for this type of insulated bus duct, which proposes a connection device for connecting conductor terminals that extend upward and downward from the end of the housing and that are formed by removing the insulation coating. In addition to overlapping each phase, connecting plates are connected and arranged between the ends of the housing both above and below these conductor overlap parts, and between the upper and lower conductor overlap parts for each phase, and between the top and bottom conductor overlap parts. An insulating member is interposed between the mating part and the upper connecting plate, and between the lowest conductor mating part and the lower connecting plate, and the insulation material is inserted vertically from directly above the upper connecting plate to the lowermost connecting plate at once. By tightening the penetrating bolt and the nut screwed onto the screw shaft of the bolt that protrudes below the bottom connection plate, the connection between the top connection plate and the bottom connection plate is tightened, and each phase is tightened. The conductor interlocking joints were all connected together. In addition, the connection portion housing was constituted by a combination of the uppermost and lower connection plates and a side connection plate that was provided between the side edges thereof and between the ends of the housing.

[The problem that the idea aims to solve]

According to the connection device having the above structure, in order to expose the bolt on the uppermost connection plate, a bolt penetration part is formed on the connection plate, and the penetration part also connects to the conductor overlapping part. However, it did not have a sufficient drip-proof effect, and in order to ensure the drip-proof effect, it was necessary to cover the uppermost connection plate with a drip-proof housing.

However, when a drip-proof housing is placed over the connection housing, the housing becomes duplicated and the structure becomes complicated, and in addition, bolts and
When checking the tightness of nuts or carrying out maintenance inspections, it is necessary to dismantle the drip-proof housing, which takes a lot of effort and time and makes maintenance work difficult, especially on ships where there is limited space and work is restricted. It was expected.

The present invention provides a connection device for horizontally installed insulated bus ducts with a drip-proof structure that can solve the potential problems of the above-mentioned conventional technology, namely, the complexity of the structure and the difficulty of maintenance and inspection work. There is a purpose in providing.

[Means to solve the problem]

As is clear from the accompanying drawings, the drip-proof horizontally installed insulated bus duct according to the present invention expands upward and downward from flanges 21a and 21a' provided at the ends of two housings 2 and 2' to be connected. A conductor 4 that protrudes while removing the insulation coating.
1 and 41' terminals are overlapped vertically for each phase, and a bottomless box-shaped bottom cover plate 93 is connected between the flanges 21a and 21a' of the two housing ends below the conductor overlapping portion. Insulating members 62, 63, 64, 65 are arranged between the upper and lower conductor mating parts of each phase and between the lowermost conductor mating part and the bottom cover plate, respectively.
In addition, an insulating member 61 is arranged above the uppermost conductor mating part, and the bolt 7 passes through the insulating member 61 vertically from just above it to the bottom cover plate 93 and the bolt 7 protrudes below the bottom cover plate 93 and is exposed. By tightening the nut 82 screwed onto the screw shaft of the bolt, the uppermost insulating member 61 and the bottom cover plate 93 are tightened, and the conductor mating portions of each phase are collectively fastened and connected, and the housing is closed. End flange 2
1 and 21a' and fixed to the bottom cover plate 93; and the end flanges 21, 2 of the housing above the bolt head.
1a' and a bottomless box-shaped upper cover plate 91 fixedly installed across the side flanges 92, 92, forming a drip-proof connection housing.

〔Example〕

Fig. 1 is an explanatory plan view of a connection device for a horizontally installed insulated bus duct with drip-proof structure according to the present invention, Fig. 2 is an explanatory front view of the device, and Fig. 3 is an explanatory left side view of the device and the insulated bus duct. 4 are explanatory plan views showing the procedure for overlapping connection of conductor terminals in the same device.

The insulated bus ducts 1, 1' to be connected to each other are
The insulated bus duct 1 on the left side, which has the same structure, will be described in detail. As clearly shown in FIG. A plurality of sheets (four sheets in this embodiment) are stacked one on top of the other, and these sheets are arranged inside the housing 2 having a drip-proof structure.

The housing 2 is constructed by covering the lower opening of a housing main body 21 having a downward U-shape with a cover plate 22 which also has a downward U-shape, and these are fixed together with appropriate bolts and nuts.

Thus, the strip-shaped insulated conductors 4 stacked one on top of the other are tightly disposed between the upper plate portion of the housing body 21 and the upper plate portion of the cover plate 22, and the insulated conductor close-contact installation structure is formed. It retains the properties of an insulated bus duct.

Now, the horizontally laid type insulated bus ducts 1, 1' configured as described above have flanges 21a, 21 for draining water that protrude outside at the end of the housing body 21 in the housing 2.
a' is provided, and the strip-shaped insulated conductors 4, 4' protrude from the flanges while expanding upward and downward, respectively, and the terminals of the conductors 41, 41' are exposed by removing the insulating coatings 42, 42'. is established,
As clearly shown in FIG. 4, the terminal has a hole bored through it for a bolt 7, which will be described later.

Conductors 41, 41' formed as above
As clearly shown in Fig. 2, the terminal of
In other words, each conductor terminal is stacked in pairs. Further, a bottomless box-shaped bottom cover plate 93 is provided below the lowermost conductor mating portion. The bottom cover plate 93 is bolted to flanges 21a, 21a' at the ends of the opposing housings 2, 2'.
It is fixed by tightening with nuts.

Insulating members 62, 63, 64 are provided between the upper and lower ends of the overlapping portions of the conductors 4, 4' for each phase.
is interposed therebetween, and an insulating member 65 is also interposed between the lowermost conductor terminal overlapping portion and the bottom cover plate 93. Therefore, the overlapping portion of the conductor terminals of each phase is
The insulating members 62, 63, 64, and 65 are vertically connected to each other on the bottom cover plate 93.

Furthermore, an insulating member 61 is also stacked on the uppermost conductor terminal stacking portion. A bolt 7 is provided from directly above the insulating member 61, passing through the overlapping portion of the conductor terminals of each phase and each insulating member 61, 62, 63, 64, 65, and also penetrating the bottom cover plate 93. As a result, the nut 82 is screwed onto the threaded shaft portion of the bolt 7 which projects downward from the bottom cover plate 93 and is exposed. Therefore, by tightening these bolts 7 and nuts 82, the space between the uppermost insulating member 61 and the bottom cover plate 93 is tightened, and the overlapping portions of the conductor terminals of each phase are fastened and connected together. Ru.

Note that 51 is a disc spring arranged so as to come into contact with the uppermost insulating member 61, and 52 is a disc spring arranged so as to come into contact with the lower surface of the bottom cover plate 93. These disc springs 51 and 52 prevent a reduction in the tightening force for the overlapping portions of the conductor terminals of each phase.

Further, the reference numeral 83 is a rotation-preventing metal fitting attached to the head of the bolt 7, and is used to prevent the bolt 7 from rotating by being engaged with an appropriate cover plate portion to be described later.

As clearly shown in FIG.
By covering the conductor terminals, electrical insulation from the overlapping portions of the conductor terminals of each phase passing through the conductor terminals is ensured.

The conductor connection section connected as described above is formed by a connection housing having a drip-proof structure, which is constituted by a combination of the bottom cover plate 93, the side cover plates 92, 92, and the upper cover plate 91. covered.

Therefore, the side cover plates 92, 92 are provided at positions covering both sides of the conductor connection portion,
The bent edge portions at the front and rear are both housings 2,
It is hooked to the flanges 21a, 21a' of No. 2 from the outside and is placed astride between them, and is further attached to the bent side edge of the bottom cover plate 93 and fixed with bolts, nuts, etc. Further, the upper cover plate 91 is shaped like a bottomless box like the bottom cover plate, and is provided in a position to cover the conductor connection portion from above the head of the bolt 7, and is bent back and forth so that the side edges are attached to both housings. ，
The left and right bent side edges are hooked from the outside to the upper edges of the side cover plates 92, 92, so that the left and right bent side edges are hooked from the outside to the upper edges of the side cover plates 92, 92, so that they and is fixed to an appropriate part with bolts and nuts or the like. (In this embodiment, it is fixed to the upper bent edge of the side flanges 92, 92.) In FIGS. 1 and 2, the side cover plate 92,
Although the left half of the upper cover plate 92 and the upper cover plate 91 are cut out, this portion appears symmetrically with the right half.

Furthermore, 100 is an earth bond whose end is connected and fixed with a bolt 101 to a stud etc. that is welded and fixed on the housings 2 and 2' of both bus ducts, thereby making both housings 2 and 2' electrically conductive. be.

It also serves as a drip-proof structure in the connection housing assembled as described above. That is, the upper cover plate 91, which does not allow bolts to pass through the conductor connection portion, acts as a barrier for liquid droplets falling from above, and drops from the downwardly bent portion at the periphery of the cover plate, and drops from the sides. The side cover plates 92, 92 and the flanges 21a, 21a' act as a barrier for liquid droplets to drip from their lower edges. Therefore, the internal conductor connections are prevented from falling onto the internal conductor connections, and a predetermined barrier is maintained. Has a droplet effect.

In addition, in order to further improve the drip-proof effect, synthetic rubber, soft plastic, or a composite material thereof is closely interposed between the edges of each cover plate and between the cover plate and the flange to make it liquid-tight. It is also possible to install them in series.

[Functions and effects of the idea]

As explained above, according to the drip-proof structure horizontally laid type insulated bus duct connection device according to the present invention,
The bolts that vertically skewer the overlapping portions of the conductor terminals of each phase are passed through the insulating member at the top, and then penetrated all at once to the bottom cover plate, which also serves as a support frame, and the nuts are tightened from below the bottom cover plate. By screwing and tightening the bolts, the bottom cover plate and the top insulating member are tightened to connect the conductor mating parts of each phase together, and the bolts are tightened to the top cover plate that covers them. Since the connection part housing is constructed so that the connection part housing has a predetermined drip-proof structure in combination with the side cover plate, the structure can be simplified as the connection part housing can be made in one piece. It is possible to check the tightening condition of the nut exposed below the bottom cover plate without disassembling it at all.

The intended purpose has been achieved, and the present invention provides a drip-proof bus duct connection device that is of great practical benefit, especially in ships where the installation space is limited.

[Brief explanation of the drawing]

1 to 4 show a preferred embodiment of a connection device for a horizontally laid insulated bus duct with a drip-proof structure according to the present invention, and FIG. 1 shows a part of the housing with the left half cut out. FIG. 2 is a front explanatory view showing a part of the housing with the left half cut out, and FIG. 3 is a left side explanatory view showing the cross-sectional structure and connection device of the horizontally installed insulated bus duct. , FIG. 4 is an explanatory plan view specifically showing the conductor terminal overlapping portion. In the symbols, 1 and 1' are horizontally installed insulated bus ducts, 2 and 2' are housings, and 21a and 21
a' is a flange at the end of the housing, 4 is a strip-shaped insulated conductor, 41, 41' are conductors, 61, 62, 6
3, 64, 65 are insulating members, 7 is a bolt, 82 is a nut, 91 is an upper cover plate, 92 is a side cover plate, 93
is the bottom cover plate.

Claims (1)

[Scope of utility model registration request] This is a connection device for horizontally installed insulated bus ducts 1, 1' in which a plurality of band-shaped insulated conductors 4, 4' are stacked one above the other by their band surfaces and arranged inside a drip-proof housing 2, 2'. flanges 21a, 21 at the ends of the two housings 2, 2'
The terminals of the conductors 41, 41', which are formed by expanding and protruding upward and downward from a' and having their insulation coatings removed, are stacked vertically for each phase, and below the overlapping portion of these conductors, the ends of the two housings are A bottomless box-shaped bottom lid plate 93 connected between the flanges 21a and 21a' is disposed, and the bottom cover plate 93 is arranged between the upper and lower conductor mating parts of each phase, and between the upper and lower parts of the lowest conductor mating part and the bottom lid plate. An insulating member 62, 63, 64, 65 is interposed between each of the insulating members 62, 63, 64, and 65, and an insulating member 61 is also arranged above the uppermost conductor overlap part, and a bolt 7 passes through the insulating member 61 vertically from just above it to the bottom cover plate 93. and the nut 82 screwed onto the screw shaft of the bolt exposed below the bottom cover plate 93, thereby tightening the space between the uppermost insulating member 61 and the bottom cover plate 93, and connecting the conductor for each phase. a side cover plate 92 which is fixed to the bottom cover plate 93 by connecting the overlapping portions together and extending between the end flanges 21 and 21a' of the housing;
92, and a bottomless box-shaped upper cover plate 91 fixed above the bolt head between the end flanges 21 and 21a' of the housing and across the side flanges 92 and 92, resulting in a drip-proof structure. A connection device for a horizontally installed insulated bus duct having a drip-proof structure, characterized in that it constitutes a connection housing.