JP2009290964A - Electric wire support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire support which enables an easy and efficient work for supporting overhead electric wires on a utility pole while exhibiting superior safety. <P>SOLUTION: An arm portion 12 has such a shape as it is elongated while being wound in the vertical direction to form a space on the inside in the state where the proximal end 12a is fixed to a utility pole 100 at the fixing portions (14, 16), and a supporting fitting (22), i.e. the latching means of an electric wire 200, is provided in each position which assures a required interval of the electric wire 200 to be supported. With such an arrangement, the arm portion 12 elongates to draw at least a ring although it does not care about the locus profile, and a plurality of electric wires are supported while being spread two-dimensionally. A separation distance of the supporting portions of the plurality of electric wires 200 from the utility pole 100 is thereby restrained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric wire support, and more particularly to an electric wire support that is attached and fixed to an electric pole in order to support an installed electric wire with a predetermined interval by the electric pole.

  8 and 9 show examples of conventional wire supports having different sizes. 8 shows an example in which an arm portion (usually referred to as “arm metal”) protrudes from the utility pole 100 by about 750 mm, and FIG. 9 shows an example in which the arm portion protrudes by about 1200 mm. Has been. Each figure (A) is a schematic horizontal sectional view, and each figure (B) is a partial side view.

  The electric wire support 80 in FIG. 8 has an arm portion 81, a band portion 82 that is a fixing portion, and a holding portion 83. The arm portion 81 is held by the holding portion 83 at the base end side, and in this example, the base end portion 81a of the arm portion 81 is held by the holding portion 83 and fixed so that the holding state is maintained by the bolt 84. Has been. The holding portion 83 is fixed to the utility pole 100 by a band portion 82, and the band portion 82 is wound around the utility pole 100 from both sides and fastened with a bolt 86 at the other end. Note that, on the lower side in the installed state of the holding portion 83, a support reinforcing portion 83a that reinforces the electric wire support by the holding portion 83 with one side thereof being in contact with the utility pole 100 is formed ((B) in the figure). See).

  With this configuration, the arm portion 81 is firmly fixed to the utility pole 100 and has a configuration for supporting three electric wires (not shown). That is, the arm portion 81 having a length of about 750 mm has mounting holes 85 formed in three places, and the distance L1 from the utility pole 100 to the first mounting hole 85-1 is about 325 mm, The distance L2 from the mounting hole 85-1 to the second mounting hole 85-2 and the distances L2, L3 from the second mounting hole 85-2 to the third mounting hole 85-3 are about 200 mm. The interval L4 from the third mounting hole 85-3 to the other end of the arm portion 81 is about 25 mm. A mounting bracket is attached to each of the mounting holes 85. For example, the installation electric wire is supported by the mounting bracket below the arm portion 81.

  The electric wire support 90 shown in FIG. 9 has substantially the same configuration as that of the electric wire support 80 shown in FIG. 8, and the same elements are denoted by the same reference numerals, and detailed description thereof is omitted. 8 differs from the electric wire support 80 of FIG. 8 in that the arm portion 91 is configured to support five installed electric wires, and the five mounting holes 92-1 to 92- are provided at predetermined intervals. 5 is formed. The formation intervals of the mounting holes 92-1 to 92-5 are substantially the same as in the example of FIG.

  FIG. 10 shows a configuration example of another known technique. As shown in the figure, six support portions for supporting six overhead wires by the utility pole 100 are provided. Two arm portions (reference numerals 102 and 104) are provided, and two metal support brackets 106-1 and 106-2 and 108-1 and 108-2 are provided in each arm portion 102 and 104, respectively. It is attached and configured to support the electric wire under the arm portions 102 and 104.

  In addition, the other two electric wires are directly attached to the utility pole 100 by attaching the pole mounting band members 110 and 112, and are supported by the support fittings 114 and 116 provided on the pole mounting band members 110 and 112. Has been taken.

  Further, Patent Document 1 discloses a technique for stabilizing the mounting state of a brace that is attached by a utility pole-extracting metal fitting. “A metal fitting is clamped with a band body composed of a plurality of band pieces, The arm bracket provided on the main body protrudes from the peripheral surface of the utility pole, and the device is attached to this. And the metal fitting body has a substrate having a bent shape along the peripheral side of the utility pole, the base end of the arm metal is fixed to the upper side of the central portion of the power pole in the circumferential direction of the circuit board, and the arm metal is removed from the utility pole. Projected. Furthermore, the metal fitting body has a pair of upper and lower assembly parts on both sides of the arm metal. Furthermore, the structure which penetrates an assembly | attachment volt | bolt to the connection pipe | tube provided in the base end of the upper and lower assembly | attachment part pieces of a metal fitting body and a band piece, and is fixed with an assembly nut is disclosed.

  With such a configuration, by pulling both sides of the metal fitting main body in opposite directions with the band pieces, the metal fitting main body can be fastened to the electric pole surface and the arm metal can be projected from the electric pole surface. And the board | substrate of the metal fitting main body to which the metal brace was fixed will be in the state which contact | adhered to the electric pole surface satisfactorily, and the arm metal of the stable attachment state with respect to the electric pole, ie, a protruding metal fitting, is obtained.

JP 2003-324830 A

  A plurality of electric wires by electric poles are supported by a band device for mounting a metal fitting having an arm portion (arm brace) as disclosed in Patent Document 1, and for supporting the installed electric wire in the electric pole using the conventional arm portion. However, the following issues exist.

  First, when the linear arm portion as shown in FIGS. 8 to 10 is attached to the power pole so as to protrude from the power pole, the length protruding from the power pole increases as the number of wires to be supported increases. . That is, the distance between the wires must be sufficiently ensured, and as described above, for example, when supporting five wires, a protruding length of about 1,200 mm is required. On the other hand, in the construction work of the electric wire, since the worker performs the work while climbing the electric pole by some means, the work range that is separated from the electric pole is limited. Therefore, there is a limit to extending the arm portion from the viewpoint of the work of laying the electric wire, and the longer the arm portion is, the more difficult it is to secure the stability of the attachment to the utility pole.

  Furthermore, in the case of the configuration of the conventional linear arm portion, as shown in FIG. 10, the electric wire is supported on the lower side of each arm portion. In such a support state, for some reason, when the support state collapses and the electric wire is dropped, the electric wire may be bent downward or may be dropped.

  Moreover, as shown in FIG. 10, it is possible to support a plurality of electric wires by suppressing the separation distance from the utility pole by supporting the electric wires at a plurality of height positions. As described above, in order to fix the support member to the power pole, it is necessary to perform a mounting and fixing work on many power poles, which complicates a complicated work. Actually, in the example of FIG. 10, an operation for attaching four support members and arm members in the vertical direction must be performed.

  Patent Document 1 discloses a configuration for stably attaching a metal fitting (a structure part for attaching an arm part) to a utility pole, but how simple, reliable, and safer a relatively large number of wires can be. There is no suggestion on how to install it.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric wire support body that can easily and efficiently support a built-in electric wire to a utility pole and is excellent in safety. It is to provide.

In order to achieve the above object, the wire support according to claim 1 is:
In order to support the installed electric wire with a predetermined interval, an arm part having a predetermined length that is attached and fixed to the electric pole in a state of protruding from the electric pole, and a fixing part that fixes the arm part to the electric pole. In the electric wire support body, the arm portion has a shape that is extended while being wound up and down so as to form a space on the inner side in a state where the base end portion is attached and fixed to the electric pole by the fixing portion. In addition, the wire locking means is provided at each position where the necessary distance between the supported wires can be secured.

  With this configuration, the arm portion is extended so as to draw a ring in at least the vertical direction regardless of the shape of the winding locus (for example, a circle, a polygon, etc.). In other words, the arm portion serving as the base for supporting the electric wire has a two-dimensional expansion in the vertical and horizontal directions. Therefore, it is efficient at each position where the necessary separation distance between the electric wires can be secured, that is, for example, in a state where an insulated state is ensured and the installed electric wires are spaced apart from each other even if they are shaken by wind or the like. A plurality of electric wires can be supported well. Thereby, compared with the case where the electric wire is supported at a predetermined interval on the linear arm portion, it is possible to support a plurality of electric wires by using the wound arm portion while suppressing the separation distance from the electric pole. .

  That is, in the case of a linear arm portion, the wire support position expands one-dimensionally to support a plurality of wires, but according to the wound arm portion, the wire support position extends two-dimensionally. Is secured. Therefore, if the same number of wires are supported, separation of the support position from the utility pole can be reliably suppressed, and facilitation of the work of installing the wires on the utility pole is achieved. Moreover, the increase in the installation number of the electric wire which can be supported by the operation | work from a utility pole can be achieved.

The electric wire support according to claim 2 is the electric wire support according to claim 1,
The locking means is configured to support the electric wire inside the wound arm portion. With this configuration, when the supported electric wire is dropped from the arm part due to some situation, it falls to the inside of the wound arm part. Therefore, it is prevented from dropping downward as in the case of the electric wire supported on the lower side of the conventional linear arm portion, and the safety is improved.

The wire support according to claim 3 is the wire support according to any one of claims 1 or 2,
In the fixed state, the arm portion extends so as to draw a substantially arc upward from the base end portion on the fixed side to the utility pole, and the distal end portion extends from below to the vicinity of the base end portion as a whole. It is characterized by having a substantially ring shape with a part opened.

  According to this configuration, the arm portion in the wound state has a substantially ring shape (substantially circular shape). Therefore, when supporting the same plurality of electric wires, the separation distance from the utility pole is 1/3 or less compared to the case of the conventional linear arm portion, and the installation work is facilitated. Also, the distal end portion of the arm portion is wound and extends to “near” the proximal end portion, and is not completely in contact with the proximal end portion, and the ring shape is at the distal end portion. It is in an open state. That is, the ring shape is not a closed loop. Therefore, the electric wire can be moved from the open portion into the ring, and the electric wire can be easily supported in the ring shape.

The wire support according to claim 4 is the wire support according to any one of claims 1 or 2,
In the fixed state, the arm portion first extends a straight portion extending in a substantially horizontal direction by a predetermined length from the base end portion, and extends so as to draw a substantially arc from the tip of the straight portion downward. The portion has a shape having a substantially ring-shaped portion that extends from below to the vicinity of the base end portion and is partially opened.

  According to this structure, since the base end part of the arm part has the linear part extended substantially linearly, the stable attachment fixing operation | work to a utility pole can be performed comparatively easily. In other words, it is sufficient to perform the fixing operation on the linear portion in the portion to be fixed to the utility pole while having the ring-shaped portion, and it is possible to obtain a more stable fixing state of the arm portion. Fixing work by is easy.

The wire support according to claim 5 is the wire support according to any one of claims 3 and 4,
The arm portion has a shape in which the distal end portion extends further from a position in the vicinity of the base end portion toward a substantially central direction of the substantially ring-shaped portion. According to this configuration, since the tip of the arm portion further extends to the center of the ring shape that is one round, it is possible to support the electric wire in the extended portion, and further increase the number of supporting electric wires. Can be planned.

The wire support according to claim 6 is the wire support according to any one of claims 4 or 5,
The arm portion has a spiral shape in which the distal end portion extends from the position in the vicinity of the base end portion so as to gradually reduce the winding diameter inward of the substantially ring-shaped portion. With this configuration, the inner space of the wound arm portion can be utilized without waste, and a large number of electric wires can be efficiently supported while suppressing the protruding length from the utility pole.

The electric wire support according to claim 7 is the electric wire support according to any one of claims 1 to 6,
The fixing portion is configured to accommodate and hold the base end portion, and bulges downward from the electric pole side end portion of the holding portion in the attached state to the electric pole, and is brought into contact with the electric pole in the attached state. And a bulging support portion. The weight of the arm portion added to the fixed portion is received by the utility pole, but there is a bulging support portion at the lower portion of the fixed portion, and a load is applied to the utility pole through this bulging support portion. Stabilization of the fixed state of the arm portion by means of is achieved.

  As described above, according to the electric wire support according to the present invention, it is possible to support the electric wire with a spread in the two-dimensional direction instead of the one-dimensional direction, and the electric pole of the attached arm portion is the most. When the distance to the distant position (separation distance) is the same, more electric wires can be supported than a conventional electric wire support having a linear arm portion. In addition, the electric wire installation work can be performed in a range close to the electric pole, and the ease and safety of the electric wire installation work are improved.

  Hereinafter, an electric wire support according to an embodiment of the present invention will be described in detail based on the drawings. FIG. 1 is an explanatory view showing a configuration example of an electric wire support according to an embodiment of the present invention. As shown in the drawing, the arm portion 12 which is a main component of the wire support 10 has an external shape wound around one turn. That is, in the fixed state, it has a shape that is stretched while being wound in the vertical direction so as to form a space inward from the base end portion 12a side. )have. The distal end portion 12b of the arm portion 12 extends to a position near the proximal end portion 12a, and the proximal end portion 12a is attached and fixed to the utility pole 100 by a fixing portion.

  The fixing portion is formed with the mounting band 14 as a main component. In the present embodiment, two length-adjustable band pieces 14-1 and 14-2 (the reference numeral 14-2 side is a power pole in the figure). Hidden in the shade and not shown) is fixed by a bolt 15 on the other side of the utility pole 100, and the arm portion 12 is fixedly attached on one side. FIG. 2 shows the mounting structure of the arm portion 12 in the present embodiment. As shown in the drawing, the base end portion 12a of the arm portion 12 is provided with two tongue pieces 16-1 and 16-2 in the vertical direction. The tongue pieces 16 are respectively formed with fastening holes 18. And the tubular part 14a formed in the one end side of the attachment band piece 14-1 is arrange | positioned between the two tongue pieces 16-1 and 16-2, and the volt | bolt 20 is penetrated by the hole 18 for fastening, and the tubular part 14a. Fastened and fixed. The tongue piece 16 is also formed on the other side surface of the arm portion 12 (not shown), and is fastened and fixed with a bolt or the like using a tubular portion formed on one end side of the mounting band piece 14-2. The That is, the arm portion 12 is stably fixed to the utility pole 100 while being pulled from both sides by the attachment band pieces 14-1 and 14-2. As described above, the fixing portion is constituted by the fastening member such as the tongue piece 16 or the bolt provided on the attachment band 14 and the arm portion 12 side.

  FIG. 3 shows a structure for supporting the electric wire 200 by the ring-shaped arm portion 12. As shown in the drawing, a J-shaped support fitting 22 is inserted into a mounting hole formed in the arm portion 12 and is fastened and fixed by a nut 24. The electric wire 200 is formed between the bent portion of the support fitting 22 and the arm portion 12. Sandwiched between. As can be understood from FIG. 1, the support fittings 22 are provided at seven locations at predetermined intervals, and one electric wire 200 is supported in each of the support fittings 22.

  Further, the distal end portion 12b of the arm portion 12 extends to the vicinity of the proximal end portion 12a, but an interval (a gap X in the figure) through which the electric wire 200 can pass is ensured between the proximal end portion 12a. Thus, the installation work of the electric wires 200 to the respective support fittings 22 is performed through the gap X.

  In this way, seven electric wires 200 are supported on the ring-shaped arm portion 12, and the respective electric wires 200 are secured at a necessary interval. That is, the mounting location of the support metal fitting 22 is determined under the condition that an appropriate distance in the installed state can be secured between the installed electric wires 200. For example, the space | interval of the grade which ensures an insulation state and does not contact each other even if the installed electric wire shakes with a wind etc. is provided.

  In addition, compared to the case where seven electric wires are installed using a conventional linear arm, it can be installed two-dimensionally on a substantially circular line, so the horizontal width is about one third. It can be installed inside. Therefore, the separation distance of the electric wire 200 from the electric pole 100 is suppressed, and thus the electric wire 100 can be easily supported from the electric pole 100 side even when many electric wires are installed.

  Moreover, since the support metal fitting 22 is inserted and provided in the arm part 12 so that the electric wire 200 may be supported inside the ring-shaped arm part 12, the supported electric wire 200 is supported by the support metal fitting 22 depending on a certain situation. When falling off from the ring, it falls to the inside of the ring-shaped arm portion 12. Therefore, it does not fall to the outside of the arm portion 12, and it is possible to avoid an influence on a passerby or the like even during the repair work.

  Next, another embodiment will be described based on FIG. In the electric wire support 40 according to this embodiment, the arm portion 42 has a straight portion 42b that first extends in a substantially horizontal direction from the base end portion 42a in a fixed state to the utility pole 100. And it extends in a substantially ring shape further downward, and the distal end portion 40c extends from below to a position near the proximal end portion 42a.

  As in the embodiment of FIG. 1, the fixing portion in the present embodiment is formed with the attachment band 44 as a main component, and two length-adjustable band pieces 44-1, 14-2 (reference numeral 44). The -2 side is hidden behind the electric pole in the figure and is not shown), and is fixed by a bolt 45 on the other side of the electric pole 100, and the arm portion 42 is attached and fixed on the one side.

  FIG. 5 shows a structure for attaching the arm portion 42 to the fixed portion. As shown in the figure, first, a holding metal piece 46 for holding the arm portion 42 is attached to the attachment band 44. As shown in the figure, the holding hardware 46 has a cylindrical housing portion 47, and upper and lower two tongue pieces 48-1 and 48-2 are provided on the proximal end side of the housing portion 47. A fastening hole 50 is formed in each 48. And the tubular part 44a formed in the one end side of the attachment band piece 44-1 is arrange | positioned between two upper and lower tongue pieces 48-1, 48-2, and the volt | bolt 52 is penetrated by the hole 50 for fastening and the tubular part 44a. And fastened and fixed.

  Although not shown, the other attachment band piece 44-2 has the same configuration and is fastened and fixed by a fastening hole 50 provided on the other side of the tongue piece 48. Thereby, the holding | maintenance metal object 46 is stably fixed to the utility pole 100 in the state pulled from the both sides by the attachment band pieces 44-1, 14-2.

  Then, the base end portion 42 a of the arm portion 42 is inserted into the accommodating portion 47 of the holding hardware 46. Each of the base end portion 42a of the arm portion 42 and the accommodating portion 47 of the holding hardware 46 is formed with a fixing hole 54 at a position facing the base end portion 42a of the arm portion 42 in an inserted state. The bolts 56 are inserted into the fixing holes 54 and fastened and fixed, so that the arm portion 42 is firmly held by the holding hardware 46.

  Further, the holding hardware 46 is formed with a bulging support portion 47 a that gradually protrudes toward the base end side of the housing portion 47 at the base end side bottom portion in the attached state of the housing portion 47. As described above, in the state where the holding hardware 46 is attached to the utility pole 100, the weight of the arm portion 42 is added to the attachment band 44 and the utility pole 100 via the holding hardware 46, but this bulging support portion 47a. Therefore, the contact area of the holding hardware 46 with the utility pole 100 is expanded downward, and the weight of the added arm portion 42 can be received more stably.

  As in the present embodiment, by forming the straight portion 42b on the base end portion 42a side of the arm portion 42, the portion that is fixed to the utility pole 100 while having the ring-shaped portion is compared with the straight portion. It is sufficient to perform this fixing work, and a more stable fixing state of the arm part 42 can be obtained, and the fixing work by the fixing part is also easy.

  Also in the present embodiment, the ring-shaped portion of the arm portion 42 supports the electric wires 200 at seven locations, and the structure for supporting is the same as the supporting structure in FIG. The description is omitted. Further, the operation for inserting and supporting the electric wire 200 into the ring-shaped portion and the operation after the support are the same as in the embodiment of FIG.

  FIG. 6 shows the configuration of still another embodiment. Characteristic of the electric wire support 60 according to the present embodiment is that the distal end portion 62a of the arm portion 62 further extends from the vicinity of the proximal end portion 62b of the arm portion 62 and extends to substantially the center position of the ring-shaped portion. It is that. And the support metal fitting 22 is inserted and attached also to the front-end | tip part 62a, and also one electric wire is supported. In this way, as long as an appropriate separation distance between the electric wires 200 can be ensured, many electric wires 200 can be installed in a two-dimensional spread.

  FIG. 7 shows a further modification of the embodiment of FIG. As illustrated, in the wire support 70 according to the present embodiment, the arm portion 72 has a spiral shape as a whole. That is, the distal end portion 72a further extends from the vicinity of the proximal end portion 72b, and extends so as to gradually reduce the diameter of the arc inward of the substantially ring-shaped portion. And the support metal fitting 22 is inserted and attached to the spiral extended part at predetermined intervals.

  As for the interval between the plurality of attached support fittings 22, an appropriate separation distance is secured for any of the support fittings. That is, the interval between the lines of the spiral portion is appropriately ensured, and the installation interval of the support fitting 22 is set so as to ensure an accurate separation interval between the electric wires 200 supported. According to this spiral arm portion, the space formed inside the arm portion 72 can be utilized without waste, and a large number of electric wires are efficiently supported within a predetermined distance from the utility pole 100. It is possible.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible within the range of the summary of invention. For example, the winding shape of the arm portion is substantially circular in the embodiment, but is not limited thereto, and may be a polygonal shape such as a substantially rectangular shape or a substantially hexagonal shape. In the embodiment shown in FIG. 7 as well, the spiral portion is not limited to the arcuate spiral shape, and may be formed so as to spiral with a polygonal basic shape such as a hexagon, for example. Is possible.

It is explanatory drawing which shows the structure of the electric wire support body which concerns on embodiment of this invention. It is structure explanatory drawing of the fixing | fixed part in embodiment of FIG. It is explanatory drawing which shows the electric wire support structure of the arm part in embodiment of FIG. It is explanatory drawing which shows the structure of the electric wire support body which concerns on other embodiment of this invention. It is structure explanatory drawing of the fixing | fixed part in embodiment of FIG. It is explanatory drawing which shows the structure of the electric wire support body which concerns on further embodiment of this invention. It is explanatory drawing which shows the structure of the electric wire support body which concerns on the further modification of embodiment shown in FIG. (A) And (B) is explanatory drawing which shows the structure of the conventional electric wire support body, (A) is a schematic horizontal sectional view, (B) is a partial side view. (A) And (B) is explanatory drawing which shows the structure of the conventional electric wire support body, (A) is a schematic horizontal sectional view, (B) is a partial side view. It is explanatory drawing which shows the structure of the conventional electric wire support body.

Explanation of symbols

10, 40, 60, 70 Electric wire support 12, 42, 62, 72 Arm part 14, 44, 64 Mounting band part 22 Support metal fitting 46 Holding metal 200 Electric wire X Clearance

Claims (7)

An electric wire having an arm portion of a predetermined length that is attached and fixed to a power pole in a state of protruding from the power pole, and a fixing portion that fixes the arm portion to the power pole in order to support the installed electric wire with a predetermined interval. In the support,
The arm portion is
An electric wire having a shape that extends while being wound in the vertical direction so as to form a space on the inside in the attached and fixed state, and is provided with a locking means for the electric wire at predetermined intervals. Support. The locking means is
The wire support according to claim 1, wherein the wire support is configured to support the wire inside the wound arm portion. The arm portion is
In the attached and fixed state, it extends so as to draw a substantially circular arc upward from the base end portion on the fixed side to the utility pole, and the tip end portion extends from below to the vicinity of the base end portion, and is partially opened as a whole. The electric wire support according to claim 1, wherein the electric wire support has a substantially ring shape. The arm portion is
In the attached and fixed state, first, a straight portion extending in a substantially horizontal direction from the base end portion, and a straight arc extending downward from the tip of the straight portion, and the tip portion is downward The electric wire support according to claim 1, wherein the electric wire support has a shape having a substantially ring-shaped portion that extends from the base end portion to a position near the base end portion and is partially opened. The arm portion is
5. The electric wire support according to claim 3, wherein the distal end portion has a shape extending further from the position in the vicinity of the proximal end portion toward a substantially central direction of the substantially ring-shaped portion. The arm portion is
6. The device according to claim 4, wherein the distal end portion has a spiral shape extending so as to gradually reduce a winding diameter from a position in the vicinity of the base end portion toward the inside of the substantially ring-shaped portion. The electric wire support according to item.   The fixing portion accommodates and holds the base end portion, and bulges downward from the electric pole side end portion of the holding portion in the attached state to the electric pole, and comes into contact with the electric pole in the attached state. The electric wire support according to any one of claims 1 to 6, further comprising a bulge support portion.

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