JP2019193465A - Service drop separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more surely secure a separation at an arbitrary position of an overhead drop line. A first winding (5) fixed to a first position (101a) of a low-voltage overhead drop wire (101), a second winding (6) fixed to a second position (10b) of a low-pressure overhead drop wire (101), A contraction bar 20 for bending the low-pressure overhead drop wire 101 between the first position 101a and the second position 10b by bringing the winding 5 and the second winding 6 closer to each other and maintaining the state; Is provided. [Selection diagram] Fig. 1

Description

  The present invention relates to an aerial service line separating apparatus for securing a distance between an aerial service line and another object.

  The low-voltage overhead service lines of the power distribution facilities need to be separated from other objects by a predetermined distance or more, and are periodically inspected, and repairs are made to places where separation is not ensured. However, in recent years, the number of cases where weak electrics are installed on the power pole has increased, and there are many places where separation is not secured, and there are cases where renovation is not easy. It had to be re-installed and it took a lot of labor and time for the renovation.

  For this reason, the cable position adjustment member of being able to ensure the isolation | separation between cables by changing the shape of a cable arbitrarily is known (for example, refer patent document 1). The cable position adjusting member includes a winding portion wound around a cable and arbitrarily deformed, first fixing means provided on one end side of the winding portion to fix the winding portion to another member, And a second fixing means provided on the other end side for fixing the winding portion to the cable.

Japanese Patent Laid-Open No. 2008-141884

  By the way, it is necessary to ensure the separation of the low-voltage aerial lead-in wire over the entire length, and it may be necessary to perform a repair to ensure the separation at an arbitrary position. However, in the cable position adjusting member described in Patent Document 1, since the first fixing means is fixed to the lever or the like, the cable position adjusting member cannot be arranged unless the member such as the lever is located nearby. Further, since the cable is merely deformed and held by the winding portion, the cable may return to the original position due to external force or aging.

  Therefore, an object of the present invention is to provide an aerial lead-in wire separation device that can ensure a separation at an arbitrary position of an aerial lead-in wire more reliably.

  In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that a first fixing means fixed to a first position of an aerial service line and a second fixing means fixed to a second position of the aerial service line. And holding the state by bringing the first fixing means and the second fixing means close to each other, thereby bending the overhead lead-in line between the first position and the second position. And an aerial lead-in wire separating device.

  According to the present invention, the first fixing means is fixed to the first position of the aerial lead-in wire, the second fixing means is fixed to the second position of the aerial lead-in wire, and the first holding means is moved by the approach holding means. And the second fixing means are brought close to each other and the state is maintained. Thereby, the aerial lead-in wire between the first position and the second position is curved, and a separation from other objects is ensured.

  According to a second aspect of the present invention, in the aerial lead-in wire separation device according to the first aspect, the approach holding means can be contracted, the first fixing means is connected to one end side in the contraction direction, and the other end in the contraction direction. The second fixing means is connected to the side, and the approach holding means is contracted to bring the first fixing means and the second fixing means closer to each other.

  According to a third aspect of the present invention, in the aerial lead-in wire separation device according to the first or second aspect, the first fixing means and the second fixing means are deformable linear bodies that are wound around the aerial lead-in wire. It is fixed.

  According to the invention of claim 1, by making the first holding means and the second fixing means approach by the approach holding means, the aerial lead-in line between the first position and the second position is curved, Separation from other objects can be ensured. At this time, the first fixing means is fixed to a first position that is one end of a portion where the separation is to be secured (part of the lead-in wire), and the second fixing is performed to the second position that is the other end of the location where the separation is desired to be secured. By fixing the means, it is possible to secure a separation with respect to an arbitrary position / location of the overhead lead-in wire. Further, since the approaching state between the first fixing means and the second fixing means, that is, the curved state of the aerial lead-in wire is held by the approach holding means, the separation can be more reliably performed regardless of external force or aging (for a long period of time). Over).

  In this way, as a result of securing the separation more reliably by installing this overhead lead-in wire separation device, the operator can easily secure separation without worrying about the repair method at the site, and the effort from formulation of the repair plan to construction Time can be saved. In addition, since it is not necessary to repair after a power failure, it is possible to increase the satisfaction and reliability of consumers.

  According to the second aspect of the present invention, since the first fixing means and the second fixing means approach and the aerial lead-in wire bends only by contracting the approach holding means, a work environment such as a high place or a narrow place is created. Even in severe cases, separation can be ensured easily and reliably.

  According to the invention of claim 3, since the first fixing means and the second fixing means are fixed simply by wrapping around the overhead lead-in wire, it can be easily and appropriately aerial even in a severe working environment such as a high place or a narrow place. It can be attached to the lead-in wire to ensure separation.

It is a front view which shows the use condition of the aerial lead-in wire separation apparatus which concerns on embodiment of this invention. It is a front view which shows the aerial lead-in wire separation apparatus of FIG. It is sectional drawing which shows the connection part of the contraction bar of the aerial lead-in wire separation apparatus of FIG. It is a front view which shows the wiring state before separation ensuring in embodiment of this invention. It is a front view of the 1st modification in embodiment of this invention. It is a front view of the 2nd modification in embodiment of this invention. It is a front view of the 3rd modification in embodiment of this invention.

  The present invention will be described below based on the illustrated embodiments.

  1 to 4 show an embodiment of the present invention, and FIG. 1 is a front view showing a usage state of an aerial lead wire separating apparatus 1 according to this embodiment. This aerial lead-in wire separation device 1 is a device for ensuring the separation between the low-pressure aerial lead-in wire 101 and other objects at a predetermined distance or more. As shown in FIG. A first winding (first fixing means) 5 and a second winding (second fixing means) 6 are provided. Here, in this embodiment, the case where the other object is the weak electric cable 102 and the low electric cable 102 extends substantially perpendicular to the low-voltage overhead lead-in wire 101 as shown in FIG. 4 will be mainly described.

  As will be described later, the contraction bar 20 moves the first winding 5 and the second winding 6 close to each other and maintains the state thereof, as will be described later. The low-voltage aerial lead-in wire 101 is bent and is a rod-like body that can be expanded and contracted (shrinkable). That is, as shown in FIG. 2, a cylindrical first bar 2, and a cylindrical second bar 3 whose one end is inserted into the first bar 2 so as to freely advance and retract, And a connector 4 for connecting the first bar 2 and the second bar 3.

  As shown in FIG. 3, a male screw 21 is formed on the outer peripheral surface on one end side in the axial direction of the first bar 2, and an outer peripheral surface (tapered outer periphery) of a portion located on the tip side of the male screw 21. The surface 22) is formed in a tapered shape (conical frustum shape) whose outer diameter decreases toward the tip edge. In addition, a plurality of slits 23, which are elongated cuts extending in the axial direction, are formed around the circumference from the leading edge to the center of the male screw 21. On the other hand, one end of the first winding 5 is connected to the other end of the first bar 2 (one end side in the contraction direction of the contraction bar 20), as shown in FIG.

  The outer diameter of the second bar 3 is set to be slightly smaller than the inner diameter of the first bar 2, and as shown in FIG. 3, one end side is inserted into the first bar 2 to advance and retract (one end edge 3a). The position of the contraction bar 20 expands and contracts. On the other hand, as shown in FIG. 2, one end of the second winding 6 is connected to the other end of the second bar 3 (the other end side in the contraction direction of the contraction bar 20).

  The connector 4 has a substantially cylindrical shape, and an internal thread 41 is formed on the inner peripheral surface on one end side in the axial direction. The inner peripheral surface (tapered inner peripheral surface 42) on the other end side has an inner diameter toward the other end edge. It is formed in a tapered shape (conical frustum shape) that becomes smaller. Here, the female screw 41 is formed so as to be screwed with the male screw 21, and the tapered inner peripheral surface 42 is formed so as to be in surface contact with the tapered outer peripheral surface 22. The first bar 2 side of the second bar 3 is inserted into such a connector 4.

  Then, when the insertion length of the second bar 3 with respect to the first bar 2 is adjusted and the female screw 41 of the connector 4 is tightened to the male screw 21 of the first bar 2, the tapered inner peripheral surface 42 becomes the tapered outer peripheral surface 42. The surface 22 comes into surface contact (bite like a wedge), and the portion of the tapered outer peripheral surface 22, that is, one end side of the first bar 2 presses the second bar 3 (holds on the second bar 3). The first bar 2 and the second bar 3 are connected and fixed.

  The first winding 5 is a member fixed to the first position 101a of the low-pressure aerial lead-in wire 101. In this embodiment, the first winding 5 is a deformable linear body and is wound around and fixed to the low-pressure aerial lead-in wire 101. . That is, it is composed of a metal wire that can be deformed and retains its shape after deformation (plastically deformed), and an electrically insulating (for example, rubber) coating material that covers the entire outer peripheral surface of the metal wire. And as shown in FIG. 1, it can fix to the 1st position 101a by winding around the low voltage | pressure overhead drawing wire 101. As shown in FIG. Here, the length of the first winding 5 is set so that it can be stably fixed to the low-voltage aerial lead-in wire 101 for a long period of time.

  The second winding 6 is a member fixed to the second position 101b of the low-voltage overhead lead-in wire 101. In this embodiment, like the first winding 5, the second winding 6 is a deformable linear body, It is wound around the low-pressure overhead lead-in wire 101 and fixed.

  In order to secure the separation from the weak electric cable 102 to a predetermined distance (legal distance) or more by attaching the overhead lead-in wire separating apparatus 1 having such a configuration to the low-voltage overhead lead-in wire 101, the following method may be used. Here, before attaching the aerial service wire separating apparatus 1, it is assumed that the low voltage aerial service wire 101 is separated from the weak electric cable 102 by a distance D 1 less than a predetermined distance, as shown in FIG.

  First, the first winding 5 is wound around and fixed to the first position 101a of the low-voltage overhead lead-in wire 101 with the contraction bar 20 extended around the low-voltage overhead lead-in wire 101 facing the weak electric cable 102. The second winding 6 is wound around the second position 101b of the lead-in wire 101 and fixed. Here, the contraction bar 20 is positioned closer to the weak electric cable 102 than the low voltage overhead lead-in wire 101, and the curved portion is moved away from the weak electric cable 102 when the low pressure overhead lead-in wire 101 is bent. In addition, the first position 101a is one end of a portion (the portion of the lead-in wire) where the separation of the low-voltage overhead lead-in wire 101 is to be ensured, for example, from one side (left side) from the weak electric cable 102, and the second position 101b is a low-pressure overhead wire. At the other end of the location where the separation of the lead-in wire 101 is desired to be secured, for example, from the other side of the weak electric cable 102 (right side).

  Next, as shown in FIG. 1, the contraction bar 20 is contracted to bring the first winding 5 and the second winding 6 closer to each other, and the low-pressure aerial space between the first position 101a and the second position 101b. The lead-in wire 101 is bent. At this time, the contraction bar 20 is contracted until the distance D2 between the curved portion of the low-voltage aerial lead-in wire 101 and the weak electric cable 102 becomes a predetermined distance or more. Then, by tightening the connector 4 as described above, the contracted state of the contracting bar 20, that is, the curved state of the low-pressure aerial lead-in wire 101 is maintained. In addition, after curving the low voltage | pressure overhead drawing wire 101 so that the distance D2 may be ensured, the length of the contraction bar 20 may be adjusted and the windings 5 and 6 may be fixed to the both sides of a curved part.

  As described above, according to the aerial lead-in wire separation device 1, the first winding 101 and the second winding 6 are brought close to each other by the contraction bar 20, so that the first position 101a and the second position 101b are moved. The low voltage aerial lead wire 101 in between is curved, and the separation from the weak electric cable 102 can be secured. At this time, the first winding 5 is fixed to the first position 101a which is one end of the portion where the separation is to be secured (part of the lead-in wire), and the second position 101b which is the other end of the portion where the separation is desired to be secured. By fixing the second winding 6, it is possible to secure a separation with respect to an arbitrary position / location of the low-voltage overhead lead-in wire 101. In addition, since the close state of the first winding 5 and the second winding 6, that is, the curved state of the low-pressure aerial lead-in wire 101 is held by the contraction bar 20, the separation is more reliable regardless of external force or aging. (For a long period of time).

  In this way, as a result of securing the separation more reliably by attaching the aerial lead-in wire separation device 1, the operator can easily secure separation without worrying about the repair method at the site, and labor from the development of the repair plan to construction And time can be reduced. In addition, since it is not necessary to repair after a power failure, it is possible to increase the satisfaction and reliability of consumers.

  In addition, since the first winding 5 and the second winding 6 approach and the low-pressure aerial lead-in wire 101 is curved simply by shrinking the contraction bar 20, even if the working environment such as a high place or a narrow place is severe, The separation can be ensured easily and reliably.

  Furthermore, since the first winding 5 and the second winding 6 are fixed simply by being wound around the low-pressure overhead lead-in wire 101, the low-pressure overhead lead-in wire 101 can be easily and appropriately even in a severe working environment such as a high place or a narrow place. It is possible to secure a separation by attaching to.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the first fixing means and the second fixing means are constituted by the windings 5 and 6 wound around the low-pressure aerial lead-in wire 101. It may be configured.

  Further, the approach holding means is not limited to the contraction bar 20 described above, and may have another configuration. For example, as shown in FIG. 5, the insertion length of the second bar 3 with respect to the first bar 2 is adjusted, and the second bar 3 is fixed with a set screw 31 screwed into the first bar 2. You may make it do.

  Further, as shown in FIG. 6, windings 5 and 6 are respectively inserted from both openings of the main body 7 in which a cylindrical and axially extending slit 71 is formed, and a handle 72, 73 is provided so that the handles 72 and 73 protrude from the slit 71. Then, the first winding 5 and the second winding 6 may be brought close to each other by fixing the handles 72 and 73 close to each other.

  Alternatively, as shown in FIG. 7, one end side of the windings 5 and 6 is connected to a winding core (not shown) rotatably accommodated in the housing 8, and a handle 81 for rotating the winding core is provided. Then, the handle 81 may be turned to wind the windings 5 and 6 around the winding core, and the handle 81 may be fixed to bring the first winding 5 and the second winding 6 closer.

1 Overhead lead wire separation device 20 Shrink bar (approach holding means)
2 First bar 3 Second bar 4 Connector 5 First winding (first fixing means)
6 Second winding (second fixing means)
101 Low voltage overhead service line (aerial service line)
101a 1st position 101b 2nd position 102 Weak electric cable (others)

Claims (3)

First fixing means fixed at a first position of the overhead lead-in line;
A second fixing means fixed at a second position of the overhead lead-in line;
Approach holding means for bending the aerial lead-in line between the first position and the second position by bringing the first fixing means and the second fixing means close to each other and holding the state. ,
An aerial lead-in wire separation device comprising: The approach holding means is contractible, the first fixing means is connected to one end side in the contracting direction, and the second fixing means is connected to the other end side in the contracting direction,
Shrinking the approach holding means to bring the first fixing means and the second fixing means closer;
The overhead lead-in wire separation device according to claim 1. The first fixing means and the second fixing means are deformable linear bodies and are wound around and fixed to the aerial lead-in wire.
The aerial lead-in wire separation device according to any one of claims 1 and 2.

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