JP3728670B2 - Cable suspension support bracket insulation device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus that covers and insulates a support fitting of a suspension wire for a communication cable suspension attached to a utility pole.
[0002]
[Prior art]
The overhead communication cable stretched between the utility poles is supported by a suspension support bracket attached to the utility pole, and the communication cable is suspended by this cable suspension line. In an area where the transmission / distribution line is installed, a high voltage may be induced from the high-voltage transmission / distribution line to the communication cable. In order to carry out the core wire work in such an aerial communication cable line, the worker climbs on the power pole supporting the cable suspension line of this communication cable to carry out the core wire work. However, there is a risk of causing an electric shock by flowing to the worker through the cable core wire → the worker → the suspension support bracket for the cable suspension.
[0003]
[Problems to be solved by the invention]
In order to prevent the above-mentioned electric shock accidents of workers who work on the cable conductors of aerial communication cables by climbing on a power pole, it is necessary to insulate the workers from coming into contact with the support brackets of the cable suspension hanging lines attached to the power pole. However, conventionally, there has been no suitable insulating device that can be attached to a hanging wire support bracket and insulated from an operator. In addition, when the hanging wire support bracket is attached to the iron pillar, the induced high voltage current flows from the suspension wire support fitting to the iron pillar where the worker climbs and performs the core wire work. There wasn't.
[0004]
The present invention solves the above-described problems and provides a cable suspension support bracket insulation device that can be easily covered and attached to a support bracket of a cable suspension suspension attached to a utility pole and can be reliably insulated. It is the purpose.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the cable suspension support metal insulator of the present invention is
(1) The engaging shaft portion 8 is provided at the tip, the hanging wire notch portion 6 is provided on the upper edge 5b of the side plate portion 5, and the rear plate portion 3 is provided with the notch portion 9 for the hanging wire support bracket mounting bolt. The lower insulating housing half 1 and the upper insulating housing half 10 that opens downward, with the hook 18 provided at the tip, and the hanging notch 14 provided on the lower edge 13b of the side plate 13 In accordance with the shape, the hanging shaft portion 8 and the hanging hook portion 18 are engaged with each other to form a hanging wire support bracket insulating rod-like cover 20, and the hanging wire support fitting insulating rod-like cover 20 covers the cable hanging wire support fitting D of the utility pole. It is characterized by doing.
[0006]
(2) In the cable suspending wire support bracket insulating device of (1) described above, for the insertion of a steel column bolt, a mounting bolt B of the cable suspending wire support bracket D of the steel pillar A is provided with a flange 24 at one end of the plastic insulating cylinder 23. Insulating tube 22 is inserted, and this cable suspension wire support fitting D is covered with the suspension wire support fitting insulation rod-shaped cover 20 of (1).
[0007]
(3) The side plate portion 5 of the lower insulating housing half 1 in the hanging wire support bracket insulating rod-shaped cover 20 of the above (1) or (2) is formed on the L-shaped side plate portion 5, and this L-shape The elongated engagement protrusion 7 is provided on the vertical plate 5c of the side plate 5, and the pressing piece 15 is provided on the outer surface of the lower edge 13b of the side plate 13 of the upper insulating housing half 10, and the side plate A vertical presser plate 16 is provided on the outer surface of the rear end edge 13a of the portion 13, and an elongated engagement hole 17 is provided in the vertical presser plate 16, so that the lower insulating housing half 1 and the upper insulating housing half 10 are In conformity with the shape, the outer surface of the upper edge 5b of the lateral plate portion 5a of the L-shaped side plate portion 5 of the lower insulating housing half 1 is pressed by the pressing piece 15 of the upper insulating housing half 10 to provide lower insulation. The elongated engagement plate 16 of the upper insulating housing half 10 is engaged with the elongated engagement protrusion 7 of the longitudinal plate 5c of the L-shaped side plate 5 of the housing half 1. 17 by fitting engaged with and is characterized by being configured the suspension wire support fitting insulating 凾状 cover 20.
[0008]
[Action]
(1) Cable suspension support D attached to a power pole on the inside of a suspension support bracket insulation cover 20 in which the lower insulation housing half 1 and the upper insulation housing half 10 are combined in a bowl shape. Even if the voltage between the overhead communication cable and the cable suspension support D of the utility pole is high due to the induced voltage of the overhead communication cable by the high-voltage transmission and distribution line near the cable line, Is prevented from coming into electrical contact with the cable suspension support D. A mounting bolt B for attaching the cable suspension line support bracket D to the utility pole passes through the notch portion 9 for the suspension line support bracket mounting bolt of the back plate 3 of the lower insulating housing half 1.
[0009]
Due to the engagement between the engagement hook 18 at the tip of the upper half insulator 10 and the hook shaft 8 at the tip of the lower insulation half 1, both the upper and lower insulators are supported with this hook as a fulcrum. Since the halves 10 and 1 can be handled so as to open and close up and down, they can be attached to the utility pole without the need for separate bolts or the like for connecting the upper and lower insulating half halves 10 and 1 together. The operation of mounting the cable suspension line support metal fitting D so as to cover it is facilitated.
[0010]
A suspension wire passage hole formed in the side plate portion of the suspension wire support bracket insulation cover 20 by the suspension wire cutout portions 6 and 14 of the side plate portions with the upper and lower insulating half halves 10 and 1 aligned in a bowl shape. Reference numeral 21 denotes a hole through which the cable suspension line E passes when the suspension cable support bracket insulating cover 20 is covered with the cable suspension line support bracket D and attached.
[0011]
As described in (2) above, the insulation cylinder 22 is interposed between the bolt B and the iron pillar A by inserting the insulation cylinder 22 for inserting the steel pillar bolt into the bolt B for attaching the cable suspension support D to the iron pillar A. Since the suspension wire support fitting D and the steel pole A are insulated, the induced high voltage current is prevented from flowing from the overhead communication cable to the steel pole A, and an electric shock accident of an operator on the power pole is prevented.
[0012]
As described in (3) above, the outer surface of the upper edge 5b of the horizontal plate portion of the lower insulating housing half 1 is pressed by the pressing piece 15 of the upper insulating housing half 10 and the lower insulating housing half 1 By fitting and engaging the elongated engagement holes 17 of the vertically long pressing plate 16 of the upper insulating housing half 10 with the elongated engagement protrusions 7 of the vertical plate portion 5c of the L-shaped side surface plate portion 5, Since the combined lower insulating housing half 1 and upper insulating housing half 10 are securely coupled, the suspension support bracket insulation cover 20 is attached to the cable suspension support D of the utility pole without fear of dropping off. be able to.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1 showing a side view of the embodiment of the cable hanging wire support metal fitting insulating device of the present invention and FIG. 2 showing a bottom view, the lower insulating housing half part molded with an insulating material such as plastic is used. 1 and the upper insulation housing half 10 are used, and a hanging wire support metal insulation insulation cover 20 is used, and an iron cylinder bolt insertion insulation tube 22 formed of a plastic insulator is used.
[0014]
As shown in FIG. 3 shown in the side view, FIG. 4 shown in the bottom view, and FIG. 5 shown in the front view, the lower insulating half half 1 is a bottom plate portion 2 of the casing that opens upward, A rear plate portion 3 that rises in an L shape from the rear end of the bottom plate portion 2 and a front plate portion 4 that rises low and upward from the front end of the bottom plate portion 2 are formed. The rear plate portion 3, the bottom plate portion 2, and the front plate portion A substantially L-shaped side plate portion 5 is integrally formed on both side edges of 4.
[0015]
The bottom plate portion 2 is formed with the front half inclined upwardly toward the front end and the front half inclined plate portion 2a, and the rear half portion is formed with the rear half horizontal plate portion 2b. Further, the back plate portion 3 is provided with a notch portion 9 (FIG. 5) for a hanging wire support bracket mounting bolt that is recessed from the upper edge of the center portion. Reference numeral 3 a denotes a vertically long protruding plate portion provided on the back surface of the back plate portion 3. A hanging wire cutout portion 6 cut in a semicircular arc shape is provided in the middle portion of the upper edge 5b of the horizontal plate portion 5a of the L-shaped side plate portion 5, and the outer surface of the vertical plate portion 5c of the L-shaped side plate portion 5 is provided. Is provided with elongated engagement projections 7 and 7 (FIGS. 3 and 5).
[0016]
At the center of the front plate portion 4 of the lower insulating housing half 1, a support rod 8 a is projected at the tip to provide a hook shaft 8. The engagement shaft portion 8 engages the engagement flange portion 8 at the tip of the upper insulating housing half 10 described later.
[0017]
As shown in FIG. 6 of the side view, FIG. 7 of the bottom view, and FIG. 8 of the front view, the upper insulating housing half 10 is inclined so that the front plate portion 11 of the housing opening downward is slightly lowered. The front plate portion 12 is formed to be curved and hang from the tip portion of the top plate portion 11, and the side plate portions 13 are integrally formed on both side edges of the top plate portion 11 and the front plate portion 12.
[0018]
The side plate portion 13 is formed with a rear end edge 13a slightly inclined forward from the upper end to the lower end, and provided with a hanging line cutout portion 14 cut out in a semicircular arc shape in the middle of the lower edge 13b. A pressing piece 15 is provided on the outer surface of the front half of 13b, and a vertically long pressing plate 16 whose lower portion is bent in an inverted L shape is provided on the outer surface of the inclined rear end edge 13a. Is provided. 11a is an extension part of the rear end of the top plate part 11, and 11b (FIG. 7) is a notch part formed in the edge of this extension part 11a. Reference numeral 16 a (FIG. 6) denotes a bent portion at the lower end of the J-shaped vertically long pressing plate 16.
[0019]
At the center of the front plate portion 12 of the upper insulating housing half 10, a hooking flange portion 18 whose lower portion is bent in a J shape is provided, and a bearing groove 18a is formed inside the bent portion of the J shape. Reference numeral 19 denotes a division gap at an intermediate portion of the hooking flange portion 18.
[0020]
The lower insulating housing half 1 and the upper insulating housing half 10 are combined into a housing shape, and as shown in the side view of FIG. 1 and the bottom view of FIG. And the suspension wire support fitting D is covered. The lower insulating housing half 1 is engaged with the engaging shaft 8 at the tip of the lower insulating housing half 1 by fitting the bearing groove 18a of the engaging housing 18 at the tip of the upper insulating housing half 10 into engagement. The upper insulating casing half 10 is covered with the upper insulating casing half 10 and the upper edge 5b of the lateral plate 5a of the L-shaped side casing 5 of the lower insulating casing half 1 is placed on the side plate of the upper insulating casing half 10. 13 lower edges 13b are aligned.
[0021]
The pressing piece 15 on the outer surface of the side plate portion 13 of the upper insulating housing half 10 is pressed against the outer surface of the lateral plate portion 5a of the L-shaped side plate portion 5 of the lower insulating housing half 1 and pressed. The vertically long pressing plate 16 of the rear end edge 13a of the side plate 13 of the upper insulating housing half 10 is pressed against the outer surface of the vertical plate 5b of the L-shaped side plate 5 of the lower insulating housing half 1. At the same time, the elongated engagement hole 17 of the vertically long pressing plate 16 of the upper insulating housing half 10 is connected to the elongated engaging protrusion 7 of the vertical plate 5c of the L-shaped side plate 5 of the lower insulating housing half 1. By engaging and engaging, the hanging wire support bracket insulating cover 20 is formed on the lower insulating cover half 1 so that the upper insulating cover half 10 is matched with the cover.
[0022]
The upper suspension line provided on the lower edge 13b of the side plate 13 of the upper insulating housing half 10 by combining the upper and lower insulating housing halves 10 and 1 in a housing shape as described above. The insulating hook-shaped cover 20 is formed by the cut-out portion 14 for the lower wire and the lower cut-out portion 6 for the hanging wire provided on the upper edge 5b of the horizontal plate portion 5a of the L-shaped side plate portion 5 of the lower half insulating housing half 1. A suspension line passage hole 21 through which the cable suspension line E opened in the side plate portion passes is formed.
[0023]
The above-described suspension wire support bracket insulating cover-like cover 20 is mounted so as to cover the suspension wire support bracket D attached to the iron pole A with the suspension wire support bracket mounting bolt B. C is a nut of a mounting bolt B penetrating the iron pillar A, E is a cable suspension supported by a suspension support bracket D, and a communication cable is suspended from this cable suspension E and installed. The lower insulating housing half 1 of the hanging wire support bracket insulating cover 20 is disposed below the hanging wire support bracket D, the back plate 3 is brought into contact with the iron pillar A, and the notch 9 of the back plate 3 is formed. Fitting from the lower side of the mounting bolt B, the upper insulating housing half 10 is put on the upper side of the hanging wire support fitting D, and both the upper and lower housing half halves 10 and 1 are attached as described above. By joining in a body shape, the hanging wire support fitting D attached to the front surface of the iron pillar A is covered and attached, and the upper and lower edge half halves 10 and 1 side plate portions are formed. The cable suspension line E supported by the suspension line support fitting D is passed through the suspension line passage hole 21.
[0024]
Thus, by covering the suspension wire support fitting D on the front surface of the iron pole A with the suspension wire support fitting insulation rod-shaped cover 20, when the worker climbs the utility pole and performs the core work of the communication cable, the overhead communication cable and Even if there is a high induction voltage between the suspension wire support brackets D, an accident in which an operator makes electrical contact with this is prevented.
[0025]
In order to insulate between the hanging wire support fitting D and the iron pillar A, an iron cylinder bolt insertion insulating cylinder 22 is interposed between the mounting bolt B and the iron pillar A. As shown in FIG. 9, the iron cylinder bolt insertion insulating cylinder 22 is provided with a flange portion 24 at one end of a plastic insulating cylinder 23 and a bolt insertion hole 25 at the center.
[0026]
The steel cylinder bolt insertion insulating cylinder 22 is inserted into the mounting bolt B of the suspension wire support fitting D attached to the steel pole A, and is interposed between the bolt hole F and the mounting bolt B of the iron pole A and is inserted into the bolt hole F, and the nut. Tighten and fix C. As a result, the hole edge of the bolt hole F of the iron pillar A and the mounting bolt B are insulated by the interposition of the plastic insulating cylinder 23, and the wall surface of the iron pillar A and the nut C are insulated by the interposition of the flange plate portion 24. Is done.
[0027]
The above-mentioned suspension wire support bracket insulating gutter-shaped cover 20 covers not only the suspension wire support bracket D and uses it alone, but also covers other various electric wire / cable installation brackets attached to the utility pole. It can also be used in combination with a power pole mounting insulating cover device.
[0028]
【The invention's effect】
As described above, the cable hanging wire support bracket insulation device according to the present invention is configured to hook the hook hook portion and the hook shaft portion of the upper and lower insulating half halves to match the shape of the hook. A cable-shaped cover is constructed, and the cable hanging wire support bracket of the utility pole is covered in this insulating saddle-shaped cover, so that work on the power pole can be performed even if the voltage between the overhead communication cable and the cable suspension support bracket is high. It is possible to prevent electric shock accidents, and the insulation rod cover can open and close both upper and lower insulation housing halves up and down with the hook at the tip as a fulcrum. It becomes easy to mount so as to cover.
[0029]
In addition, the upper edge of the horizontal plate of the lower half of the insulating casing is pressed by the pressing piece of the upper half of the upper insulating casing, and the elongated engagement protrusion provided on the L-shaped side plate of the lower half of the insulating casing Since the upper and lower insulation housing halves are joined by fitting and engaging the elongated engagement holes provided in the vertically long pressing plate of the upper insulation housing half, the suspension wire attached to the cable suspension support bracket of the utility pole There is no risk of the support bracket insulation cover falling off.
[0030]
In addition, since the steel cylinder bolt insertion insulating cylinder is inserted into the cable bolt support bracket mounting bolt attached to the steel pole, and this cable cable support bracket is covered with the above-mentioned cable support bracket insulation cover. It is possible to prevent an electric shock accident of an operator by preventing the induced high voltage current from flowing from the overhead communication cable to the iron pole.
[Brief description of the drawings]
FIG. 1 is a side view of one embodiment of the present invention. FIG. 2 is a bottom view of one embodiment of the present invention. FIG. 3 is a side view of a lower insulating housing half. [Figure 5] Front view of the lower half of the insulating housing [Figure 6] Side view of the upper half of the insulating housing [Figure 7] Bottom view of the upper half of the insulating housing [Figure 8] Upper insulation Front view of half of housing [Fig. 9] Perspective view of insulating cylinder for inserting steel pillar bolts [Explanation of symbols]
1: Lower insulating housing half 3: Back plate 5: L-shaped side plate 5a: Horizontal plate 5b of L-shaped side plate 5: Upper edge 5c of horizontal plate 5a: L-shaped side plate 5 Vertical plate portion 6: Hanging wire notch portion 7: Elongated engagement protrusion 8: Engagement shaft portion 9: Hanging wire support bracket mounting bolt notch portion 10: Lower insulating housing half portion 13: Side plate portion 13a: Side plate Rear end edge 13b of the part 13: Lower edge 14 of the side plate part 13: Hanging line notch 15: Pressing piece 16: Vertically long pressing plate 17: Elongated engagement hole 18: Engagement hook part 20: Suspension line support metal insulated hook-shaped cover 21: Suspension wire passage hole 22: Insulating cylinder 23 for inserting steel pole bolts 23: Plastic insulating cylinder 24: Steel plate portion A: Electric pole, iron pole B: Mounting bolt D: Cable hanging wire support bracket

Claims (3)

A hook shaft 8 is provided at the tip, a hanging wire notch 6 is provided on the upper edge 5b of the side plate 5, and a lower opening that is provided with a hanging wire support fitting mounting bolt notch 9 is provided on the back plate 3. The insulating housing half 1 and the upper insulating housing half 10 that opens downward, with the hook 18 provided at the tip, and the hanging edge notch 14 provided on the lower edge 13b of the side plate 13, A cable hanging wire support bracket insulation device characterized by covering a cable hanging wire support fitting D of a utility pole with a hanging wire support fitting insulation rod-shaped cover 20 in which the hook shaft portion 8 and the hook collar portion 18 are engaged with each other. The steel cylinder bolt insertion insulating cylinder 22 provided with a flange 24 at one end of the plastic insulation cylinder 23 is inserted into the mounting bolt B of the cable suspension support bracket D of the steel pillar, and the cable suspension support bracket D of the claim 1 A cable suspension line support bracket insulation device characterized by being covered with a suspension line support bracket insulation gutter-shaped cover 20. The side plate portion of the lower insulating housing half 1 is formed on the L-shaped side plate portion 5, and the elongated engagement protrusion 7 is provided on the outer surface of the vertical plate portion 5 c of the L-shaped side plate portion 5. A presser piece 15 is provided on the outer surface of the lower edge 13b of the side plate 13 of the housing half 10, and an elongated engagement hole 17 is provided in the vertical presser plate 16 provided on the outer side of the side plate rear end edge 13a. The lower insulating housing half 1 and the upper insulating housing half 10 are aligned in a bowl shape, and the outer surface of the upper edge 5b of the lateral plate portion 5a of the L-shaped side plate portion 5 of the lower insulating housing half 1 is The upper insulating housing half 10 is pressed by the holding piece 15 of the upper insulating housing half 10 and the elongated insulating protrusion 7 of the vertical plate portion 5 c of the L-shaped side plate 5 of the lower insulating housing half 1. 3. The cable suspension according to claim 1 or 2, wherein the slender engagement hole 17 of the vertically long pressing plate 16 is fitted and engaged to form a hanging wire support bracket insulating gutter cover 20. Support bracket isolation device.

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