JP5872010B1 - Retaining tool engaging and disengaging tool, retaining device locking method and removal method - Google Patents

Abstract

The present invention provides a retainer engagement / disengagement tool and an engagement / disengagement method capable of engaging / disengaging a retainer from the ground and having excellent operability. A retainer engaging / disengaging tool according to the present embodiment includes an operating rod 100 and first and second arm portions 230 and 250 which are fixed to the distal end of the operating rod 100 and are orthogonal to the axial direction of the operating rod 100. And an L-shaped support part 200 provided at the front ends of the first and second arm parts 230 and 250, arranged in a state orthogonal to the longitudinal direction of the first or second arm parts 230 and 250. First and second storage cases 300, 400 having box-like case bodies 310, 410 that house the retainers 61, 63 and have slits 311 and 411 on the side surfaces 312 and 412 through which the drop cable 2 can be put in and out. And a case support portion that rotatably supports the first and second storage cases 300 and 400 by rotation shafts 391 and 491 directed toward the slits 311 and 411 at the tips of the first and second arm portions 230 and 250. It includes a 90,490, a. [Selection] Figure 1

Description

  Embodiments of the present invention relate to a retainer engagement / disengagement tool for newly installing or removing a drop cable on a utility pole, a retaining device locking method, and a removal method.

  When a so-called drop cable used for a telephone line, a cable TV line, an Internet line, or the like is drawn into each house, a utility pole E2 that is a lead-in pole is provided between the utility pole E1 having the main line and the house H as shown in FIG. In some cases, the drop cable 2 is pulled into the house H. In this case, an operation of drawing the drop cable 2 into the house H and an operation of installing the drop cable 2 on the utility pole E2 are performed. Usually, the work of installing the drop cable 2 on the utility pole E2 is performed by the operator's hand in a state where the aerial work vehicle is stopped near the road where the utility pole E2 is installed, and the worker who has entered the bucket is lifted to a higher place. In operation, the drop cable 2 is newly installed on the locking tool 4 provided at a predetermined height of the utility pole E2.

JP 2013-5472 A

  However, for example, when the utility pole E2 is installed on a slope or in a confined area such as a densely populated house, an aerial work vehicle cannot be used. In the installation work of the drop cable 2 to the utility pole E2 installed on such a slope or narrow area, it is necessary for the operator to climb the utility pole E2 using a ladder or the like and perform the installation work. Also, in the removal work of the drop cable 2 installed on the utility pole E2 in the place where the above-mentioned high-altitude work vehicle cannot be dispatched, it is necessary for the operator to climb the utility pole E2 and remove the drop cable 2 as well. Become.

  As described above, each time the drop cable 2 is attached or removed, it takes time for the operator to climb up and down the utility pole E2. Furthermore, in addition to the worker climbing up to the utility pole E2, a worker who assists the work from the ground may be required, which causes an increase in the overall work cost.

  Therefore, in this embodiment, it is possible to newly install and remove the drop cable from the ground, and it is a low-cost clasp engagement / disengagement tool excellent in operability, and a clasp securing method And to provide a removal method.

  The retainer engagement / disengagement tool according to the present embodiment includes a first retainer fixed to a main-line-side drop cable that is engaged with a retainer disposed on an upper portion of a pull-in column, and a house-side drop cable. A retaining tool engagement / disengagement tool for engaging / disengaging the second retaining tool fixed to the operating rod, and a first and a fixing rod fixed to the tip of the operating rod and substantially orthogonal to the axial direction of the operating rod A substantially L-shaped support body having a second arm portion, and disposed at the tips of the first and second arm portions so as to be substantially orthogonal to the longitudinal direction of the first or second arm portion; The first and second storage cases each having a substantially box-shaped case body that stores a second clasp, and has a slit on a side surface through which the drop cable can be inserted and removed, and the first and second storage cases The same direction as the slit direction at the tip of the first and second arms And a case supporting portion for rotatably supported by the rotation shaft toward.

  Moreover, the locking method of the clasp according to the present embodiment includes a first clasp fixed to the main line-side drop cable that is locked to a clasp installed on the upper portion of the pull-in column and a house-side clasp. A locking device locking method for locking a second locking device fixed to a drop cable, wherein the first locking device is fixed to a distal end of an operation rod and arranged in a direction substantially orthogonal to the axial direction of the operation rod. Approximately perpendicular to the longitudinal direction of the first or second arm portion that is rotatable about a rotation axis of a case support portion provided at the tip of a substantially L-shaped support body having one arm portion and a second arm portion. The first storage case and the second storage case are disposed at a downward position in which a slit provided on a side surface portion of the first storage case and the second storage case having a box-shaped case body that faces downward in the axial direction. The first storage case and the second case disposed in the downward position Storing the first and second retaining devices of the drop cable in each of the storage cases, and approaching the first storage case storing the first retaining device to the position of the locking device The first retaining case housed in the first storage case is locked to the locking tool as the first storage case rotates, and the first storage case is locked to the locking tool. And removing the first cable from the first storage case and removing the drop cable from the slit, and moving the second storage case in which the second clip is stored. Approaching the position of the locking tool, locking the second clasp stored in the second storage case to the locking tool with the rotation of the second storage case; 2 storage case To anda be withdrawn the drop cable from the slit together from the second storage case with the operation of moving away from the fastener retrieving said second anchor member.

  Further, the method for removing the retaining tool according to the present embodiment is a retaining tool removing method for removing the retaining tool fixed to the drop cable that is locked to the locking tool installed on the upper part of the retracting column. And can be rotated around a rotation axis of a case support portion which is fixed to the tip of the operation rod and provided at the tip of the support substantially perpendicular to the axial direction of the operation rod. The storage case is disposed at an upward position in which a slit that is substantially orthogonal to the longitudinal direction of the support provided on the side surface of the storage case faces upward in the axial direction, and the storage case is disposed at the upward position. The front end of the front guide provided on the drop cable approaches the direction of the drop cable, the drop cable is inserted into the slit through the front guide, and the drop is inserted into the storage case through the slit. With the operation of pulling the retaining tool into the storage case along the cable and rotating the storage case in which the retaining tool is retracted about the rotation shaft of the case support portion, And the locking tool are disengaged, the pulling tool is removed along with the movement of the storage case in a direction away from the locking tool, and the drop cable is pulled out from the slit, Remove from the locking device.

  According to this embodiment, it is possible to newly install and remove a drop cable from the ground, and it is possible to perform a low-cost clasp engagement / disengagement tool excellent in operability, a clasp securing method, and A removal method can be provided.

FIG. 1 is a perspective view of a retainer engaging / disengaging tool according to the present embodiment. FIG. 2 is a side view of the retainer engaging / disengaging tool of FIG. FIG. 3 is a plan view of the retainer engaging / disengaging tool of FIG. 1. FIG. 4 is an explanatory view showing a state in which the drop cable is lifted up to the height of the locking tool provided on the utility pole using the retainer engaging / disengaging tool of FIG. 1. FIG. 5 is an explanatory view showing a state in which one of the fastening tools fixed to the drop cable is locked to the locking tool provided on the utility pole using the fastening tool engaging / disengaging tool of FIG. 1. . FIG. 6 is an explanatory view showing a state in which one of the fastening tools fixed to the drop cable is locked to the locking tool provided on the utility pole using the fastening tool engaging / disengaging tool of FIG. 1. FIG. 7 is an explanatory view showing a state in which the retainer engaging / disengaging tool is removed from the retainer locked to the utility pole using the retainer engaging / disengaging tool of FIG. 1. FIG. 8 is an explanatory view showing a state in which a drop cable is newly installed on a utility pole using the retainer engaging / disengaging tool of FIG. 9 is used to remove the clasp locked to the utility pole using the clasp disengagement tool of FIG. 1, and to disengage the clasp of FIG. 1 to the height of the clasp along the drop cable. It is explanatory drawing which shows a mode that the tool was lifted. FIG. 10 is an explanatory view showing a state in which one of the retaining tools to be removed is stored in the second storage case. FIG. 11 is an explanatory diagram illustrating a state in which the position of the clasp stored in the second storage case is moved by the rotation of the second storage case. FIG. 12 is an explanatory diagram showing a state in which the ring portion 67 of the clasp stored in the second storage case is detached from the hook portion 41 of the locking device 4. FIG. 13 is a schematic diagram illustrating a general arrangement of lead-in lines. FIG. 14 is a schematic view showing a state in which the drop cable is attached to the utility pole.

  First, the drop cable 2 and the retainer 6 that are attached or removed using the retainer engagement / disengagement tool 1 according to the embodiment of the present invention will be described. The drop cable 2 is a cable used for laying a communication cable such as an optical fiber. For example, as shown in FIG. 14, the drop cable 2 is integrally formed with a main body portion 21 including an optical fiber and a support wire portion 23 that fixes the cable to the utility pole E2. When the drop cable 2 is attached to the utility pole E2, the space between the main body portion 21 and the support wire portion 23 is divided, and the support wire portion 23 is divided into two fastening devices 6 (first fastening device 61 and second fastening device 63). ) And the main body 21 is installed on the electric pole E2 by being locked to the hook 41 of the locking tool 4 of the electric pole E2.

  As shown in FIG. 14, the retainer 6 is a fixture provided on the drop cable 2 side in order to fix the drop cable 2 to the utility pole E2. Here, the left holding tool 6 shown in the figure near the main-line-side drop cable 2A is the first holding tool 61, and the right holding tool 6 shown in the drawing near the house-side drop cable 2B is the second holding tool 63. did. The first and second fasteners 61 and 63 have the same structure. Specifically, the fastener 6 includes a support body 65 and a ring portion 67. The support 65 has a plurality of convex portions 69 on one surface of a substantially square flat plate. The support wire portion 23 that is broken from the main body portion 21 of the drop cable 2 is wound around and fixed to the convex portions 69. The ring portion 67 is a metal ring that is provided at one end of the support body 65 and is hooked on the hook portion 41 of the locking tool 4.

  Next, a method for fixing the drop cable 2 to the utility pole E2 will be briefly described.

  When the drop cable 2 is fixed to the utility pole E2, the support wire portion 23 is split along the axial direction of the drop cable 2 at the fixing portion, and the main body portion 21 and the support wire portion 23 are separated over a necessary length. To do. The support line portion 23 of the drop cable 2 </ b> A, which is the main line side portion of the separated drop cable 2, is wound around and fixed to the convex portion 69 provided on the support body 65 of the first clip 61. Similarly, the support wire portion 23 of the drop cable 2B, which is the house side portion of the drop cable 2 separated by a predetermined interval, is wound around the convex portion 69 provided on the support body 65 of the second fastener 63. Fix by attaching. The main body 21 is covered with a protective cover 25. Further, the substantially central position of the separated main body 21 is fixed with the support line portion 23 and the tape 27 provided between the first and second fasteners 61 and 63. The drop cable 2 is fixed by hooking the ring portions 67 of the first and second fastening devices 61 and 63 fixed to the drop cable 2 to the hook portion 41 of the locking device 4, and the drop cable 2 is installed on the utility pole E2. The drop cable 2 is fixed by the first retaining member 61 and the second retaining member 63 being engaged with the hook portion 41 and stretched from both the main line side and the house side.

  Next, the configuration of the clasp engaging / disengaging tool 1 according to the embodiment of the present invention will be described.

  FIG. 1 is a perspective view of a clasp engagement / disengagement tool 1 according to this embodiment. FIG. 2 is a side view of the retainer engaging / disengaging tool 1 of FIG. FIG. 3 is a plan view of the retainer engaging / disengaging tool 1 of FIG. The retainer engagement / disengagement tool 1 includes an operation rod 100, a support part 200, a first storage case 300, and a second storage case 400.

  The operation rod 100 is a rod-like member, and has a length that allows the retainer engagement / disengagement tool 1 to reach the engagement member 4 provided at a predetermined height of the utility pole. In this embodiment, an aluminum bar that is lightweight and has good operability is used. It is also possible to use a bar that can be expanded and contracted in a plurality of stages, for example, 5 stages, as the operation bar 100.

  As shown in FIG. 3, the support portion 200 is a metal member having a coupling portion 210 in which two arm portions are coupled in a substantially plane L shape. One of them is a first arm 230 and the other is a second arm 250. The support part 200 has an attachment part 270 at the coupling part 210 where the first arm part 230 and the second arm part 250 intersect. The tip of the operation rod 100 is attached to the attachment portion 270.

  The first arm portion 230 is a solid member having a rectangular bar shape or a hollow member having a rectangular bar shape, and has four side surfaces of a first surface 231, a second surface 233, a third surface 235 and a fourth surface 237. The second arm portion 250 is a solid member having a rectangular bar shape or a hollow member having a rectangular bar shape, and has four side surfaces of a first surface 251, a second surface 253, a third surface 255, and a fourth surface 257.

  A first storage case 300 is provided at the end of the first arm 230 opposite to the coupling portion 210. A second storage case 400 is provided at the end of the second arm 250 opposite to the coupling portion 210. The length of the first arm portion 230 and the second arm portion 250 and the angle at which the both arm portions are coupled are not particularly limited, but the first pulling fixed to the drop cable 2 when the drop cable 2 is installed is not limited. The fastener 61 and the second retaining member 63 need to be formed so as to be housed in the first storage case 300 and the second storage case 400, respectively. In addition, when the distance between the front guide 330 of the first storage case 300 and the front guide 430 of the second storage case 400 is too close, there is a possibility that it may become an obstacle at the time of installation. Is done.

  As shown in FIGS. 1, 2, and 3, the first storage case 300 includes a box-shaped case body 310 of a first arm portion 230 provided at an end opposite to the coupling portion 210, a front guide 330, and the like. , A rear guide 350, a side guide 370, and a case support 390.

  The case body 310 is a rectangular hollow member formed in a cylindrical shape having a square cross section. Case body 310 is formed of four side portions. The four side surfaces include a first side surface 312, a second side surface 314, a third side surface 316, and a fourth side surface 318, respectively. The first side surface portion 312 is provided with a linear slit 311 extending in the longitudinal direction at the center thereof. A pair of side surface guides 370 each having an inclined surface that spreads outward from both sides of the slit 311 is provided. The side guide 370 is a member that is disposed along both sides of the slit 311 of the first side surface portion 312 and is a plate bent at a predetermined angle. For example, the side guide 370 is bonded to the first side surface portion 312 by bending an aluminum plate. Note that the side surface guide 370 can be formed integrally by bending a part of the side surface of the case body 310.

  Although the width of the slit 311 is not particularly defined, it is preferable that the slit 311 has a width that allows the drop cable 2 to pass therethrough and does not allow the first retainer 61 stored therein to be removed.

  The rear guide 350 is provided at the rear end of the case body 310 from the vicinity of the center of the side guide 370. The front guide 330 is provided at the front end of the case body 310. The case body 310 has a first opening 331 at the front end and a second opening 351 at the rear end. A substantially annular protrusion 313 that reduces the diameter of the second opening 351 is provided at the rear end of the case body 310. The opening inside the protrusion 313 is formed in a diamond shape, for example.

  In the present embodiment, the first storage case 300 is made of an aluminum alloy that is lightweight and has a certain degree of rigidity. The material of the first storage case 300 is not limited to the aluminum alloy, and it is also possible to use a resin material or other lightweight metal material.

  The front guide 330 is a trumpet-shaped member having an outwardly tapered surface provided at the front end portion of the case body 310. The front guide 330 is formed by winding a plate of a resin material around a place where a side portion near the front end of the case body 310 is bent outward by a predetermined amount. A part of the front guide 330 is provided with a slit 332 continuous with the slit 311 of the case body 310 in a part of the plate. The shape of the front guide 330 is not limited to the shape of the present embodiment as long as it has a function of taking the drop cable 2 from the slit 332 into the first storage case 300.

  The rear guide 350 is a member having two wing shapes that outwardly spread from the central portion of the side guide 370 to the rear end portion having the second opening 351 of the case body 310. The rear guide 350 is formed on both sides of the slit 311 with the resin material plate directed from the center of the inclined surface of the side guide 370 toward the rear end of the case body 310. The rear guide 350 having two wing-shaped plates is provided with a slit 352 that is continuous with the slit 311 of the case body 310. The shape of the rear guide 350 is not limited to the shape of the present embodiment as long as it has a function of taking the drop cable 2 from the slit 352 into the first storage case 300.

  The case support part 390 is a hinge part that rotatably connects the first storage case 300 and the first arm part 230. The case support portion 390 is formed on the front guide 330 side of the third side surface portion 316 facing the first side surface portion 312 in which the slit 311 of the case body 310 is provided. The case support portion 390 is a substantially U-shaped member having a width slightly larger than the width of the first surface 231 to the third surface 235 of the first arm portion 230. The first storage case 300 and the first arm portion 230 sandwich the tip of the first arm portion 230 between two opposing plate-like members protruding from the case support portion 390, and the plate-like member of the case support portion 390. And a pivot shaft 391 that passes through the first arm 230 and is fixed so as to be pivotable. In the present embodiment, a bolt is used as the rotation shaft 391.

  In this embodiment, the case support 390 is made of an aluminum alloy that is lightweight and has a certain degree of rigidity. The material of the case support 390 is not limited to the aluminum alloy, and a resin material, other metal materials, or the like can also be used.

  As shown in FIGS. 1, 2, and 3, the second storage case 400 includes a box-shaped case body 410 provided at the end of the second arm 250 opposite to the coupling portion 210, a front guide 430, and the like. The rear guide 450, the side guide 470, and the case support 490 are provided.

  The case body 410 is a rectangular hollow member formed in a cylindrical shape having a square cross section. Case body 410 is formed of four side surfaces. Each of the four side surfaces includes a first side surface portion 412, a second side surface portion 414, a third side surface portion 416, and a fourth side surface portion 418. The first side surface portion 412 is provided with a linear slit 411 extending in the longitudinal direction at the center portion. The first side surface portion 412 has a pair of side surface guides 470 provided with inclined surfaces that spread outward from both side portions of the slit 411. The side guide 470 is a member obtained by bending a plate disposed along both sides of the slit 411 of the first side surface portion 412 at a predetermined angle. For example, the side guide 470 is bonded to the first side surface portion 412 by bending an aluminum plate. The side guide 470 can also be formed integrally by bending a part of the side surface of the case body 410.

  The width of the slit 411 is not particularly defined, but it is preferable that the slit cable 411 has a width that allows the drop cable 2 to pass therethrough and does not allow the stored second fastening tool 63 to be removed.

  Further, the rear surface guide 450 is provided at the rear end portion of the case body 410 from the vicinity of the center portion of the side surface guide 470. The front guide 430 is provided at the front end of the case body 410. The case body 410 has a first opening 431 at the front end and a second opening 451 at the rear end. A substantially annular protrusion 413 that reduces the diameter of the second opening 451 is provided at the rear end of the case body 410. The opening inside the protrusion 413 is formed in a diamond shape, for example.

  In the present embodiment, the second storage case 400 is made of an aluminum alloy that is lightweight and has a certain degree of rigidity. The material of the second storage case 400 is not limited to an aluminum alloy, and a resin material or other lightweight metal material can also be used.

  The front guide 430 is a trumpet-shaped member having a tapered surface that extends outward and is provided at the front end of the case body 410. The front guide 430 is formed by winding a plate of a resin material around a place where a side surface near the front end of the case body 410 is bent outward by a predetermined amount. A part of the front guide 430 is provided with a slit 432 continuous with the slit 411 of the case body 410 in a part of the plate. The shape of the front guide 430 is not limited to the shape of the present embodiment as long as it has a function of taking the drop cable 2 from the slit 432 into the second storage case 400.

  The rear guide 450 is a member having two wing shapes that spread outward from the central portion of the side guide 470 to the rear end portion having the second opening 451 of the case body 410. The rear guide 450 is formed on both sides of the slit 311 with the resin material plate facing the rear end of the case body 410 from the center of the inclined surface of the side guide 470. A slit 452 continuous with the slit 411 of the case body 410 is provided between the two wing-shaped plates. The shape of the rear guide 450 is not limited to the shape of the present embodiment as long as it has a function of taking the drop cable 2 from the slit 452 into the first storage case 400.

  The case support part 490 is a hinge part that rotatably connects the second storage case 400 and the second arm part 250. The case support portion 490 is fixed to the front guide 430 side of the third side surface portion 416 facing the first side surface portion 412 in which the slit 411 of the case body 410 is provided. The case support portion 490 is a substantially U-shaped member having a width slightly larger than the width of the first surface 251 to the third surface 255 of the second arm portion 250. The second storage case 400 and the second arm portion 250 sandwich the tip of the second arm portion 250 between two opposing plate-like members protruding from the case support portion 490, and the plate-like member of the case support portion 490. And a rotation shaft 491 penetrating the second arm portion 250 so as to be rotatable. In this embodiment, a bolt is used as the rotation shaft 491.

  In the present embodiment, the case support 490 is made of an aluminum alloy that is lightweight and has a certain degree of rigidity. The material of the case support 490 is not limited to the aluminum alloy, and a resin material, other metal materials, or the like can also be used.

  Next, the operation of the retainer engagement / disengagement tool 1 formed in this way will be described.

(How to lock the retainer 6)
4, 5, 6, 7, and 8 are explanatory views sequentially illustrating a locking method of the fastening tool using the fastening tool engagement / disengagement tool 1 according to the present embodiment.

  First, before using the retainer engaging / disengaging tool 1, the drop cable 2, the first retainer 61, and the second retainer 63 that are installed on the utility pole E2 are fixed. Next, the third side surface portion 316 of the first storage case 300 is rotated to a downward position facing the fourth surface 237 of the first arm portion 230. Further, the third side surface portion 416 of the second storage case 400 is rotated to a downward position facing the fourth surface 257 of the second arm portion 250. In other words, the first storage case 300 and the second storage case 400 are rotated so that the slit 311 of the case body 310 and the slit 411 of the case body 410 are directed downward in the figure.

  Next, the first clasp 61 of the drop cable 2 is accommodated in the first storage case 300, and the second clasp 63 is accommodated in the second storage case 400. The first clasp 61 is stored in the first storage case 300 in a direction in which the ring portion 67 comes to the front guide 330 side. The second clip 63 is stored in the second storage case 400 in such a direction that the ring portion 67 comes to the front guide 430 side. In addition, the first retaining member 61 and the second retaining member 63 are arranged so that the convex portion 69 of the support body 65 of the retaining member 6 faces the opposite side to the utility pole E2 when the retaining member 4 is retained. It is accommodated in the storage case 300 and the second storage case 400. Specifically, the first clasp 61 accommodated in the first storage case 300 is disposed at a position where the convex portion 69 faces the second side surface portion 314. The second fastener 63 accommodated in the second storage case 400 is disposed at a position where the convex portion 69 faces the second side surface portion 414.

  Next, the operating rod 100 is operated to lift the retainer engagement / disengagement tool 1 in which the first retainer 61 and the second retainer 63 fixed to the drop cable 2 are accommodated. When the support part 200 is lifted to the position of the locking tool 4 of the utility pole E2, the first storage case 300 is brought close to the hook part 41 of the locking tool 4 using the operation rod 100.

  Next, as shown in FIG. 5, the first storage case 300 is further moved closer to the hook portion 41. As the first storage case 300 approaches the hook portion 41, the first retaining member 61 accommodated in the first storage case 300 also approaches the hook portion 41.

  The movement of the operating rod 100 at a position where the ring part 67 of the first clasp 61 passes through the gap 45 between the hook part 41 and the drop prevention part 43 and the tip part 42 of the hook part 41 is contained in the ring of the ring part 67. To stop.

  Here, the operating rod 100 is operated to move the support portion 200 from the utility pole E2 in the direction of arrow Z in FIG. When the support unit 200 is moved in the Z direction from the utility pole E2, the first storage case 300 rotates approximately 90 degrees in the direction of the arrow X as shown in FIG. In conjunction with the turning operation of the first storage case 300, the ring portion 67 of the first retaining member 61 moves from the distal end portion 42 of the hook portion 41 toward the proximal end of the hook portion 41 and is securely locked. .

  After confirming that the first retainer 61 is locked to the hook portion 41, as shown in FIG. 7, the operating rod 100 is operated in the axial direction of the first storage case 300, and the first retainer 61 Is pulled out from the first storage case 300. Then, the dropped first cable 61 and the drop cable 2 fixed thereto are pulled out from the slits 311, 332 and 352.

  Subsequently, the fastening tool 63 accommodated in the second storage case 400 is attached to the locking tool 4. In addition, the method of locking the fastening tool 63 to the locking tool 4 is the same as the method of locking the first fastening tool 61 to the locking tool 4 described above. For this reason, the details of the locking method using the second storage case 400 of the second clip 63 are omitted. As a result, as shown in FIG. 8, the first retaining member 61 and the second retaining member 63 are engaged with the engaging member 4, and the drop cable 2 is installed on the utility pole E2.

(Removal method of the retainer 6)
Next, a method for removing the retainer 6 will be described. 9, FIG. 10, FIG. 11 and FIG. 12 are explanatory views sequentially showing a method of removing the fastening tool using the fastening tool engaging / disengaging tool 1 according to the present embodiment.

  Moreover, in the removal method of the fastening tool 6 demonstrated below, the 2nd fastening tool 63 has been arrange | positioned on the 1st fastening tool 61 by the locking method of the above-mentioned fastening tool 6. . For this reason, at the time of removal, it removes from the 2nd fastener 63 contrary to the time of attachment.

  First, as shown in FIG. 9, before lifting the retainer engaging / disengaging tool 1, the third side surface 316 of the first storage case 300 of the retainer engaging / disengaging tool 1 is moved to the second surface of the first arm 230. Set to an upward position facing 233. Further, the third side surface portion 416 of the second storage case 400 is set at an upward position facing the second surface 253 of the second arm portion 250. In other words, as shown in FIG. 9, the first storage case 300 is arranged at a position where the slit 311 of the case body 310 faces upward in the drawing. The second storage case 400 is disposed at a position where the slit 411 of the case body 410 faces upward in the figure.

  After confirming that the first storage case 300 and the second storage case 400 are set in the upward position, the support unit 200 is lifted by using the operation rod 100 to store the second retaining member 63. The case 400 is brought close to the utility pole E2.

  The operation rod 100 is operated so that the drop cable 2 is accommodated in the second storage case 400. Specifically, the drop cable 2 is stored along the slits 411, 432, and 452 of the second storage case 400.

  As shown in FIG. 10, the second storage case 400 is operated toward the second fastener 63 along the drop cable 2 stored in the second storage case 400, and is locked to the locking tool 4. The second clip 63 is stored in the second storage case 400.

  In this state, when the operating rod 100 is operated upward in the drawing and the second storage case 400 is rotated by about 90 degrees as shown in FIG. 11, the second storage case 400 is positioned at the end of the second arm portion 250. To do. In conjunction with this operation, the second fastener 63 stored in the second storage case 400 also rotates. When the second retainer 63 rotates 90 degrees, the ring of the ring portion 67 changes to a position substantially orthogonal to the tip portion 42 where the hook portion 41 of the locking device 4 is bent as shown in FIG. . Here, the ring portion 67 is detached from the hook portion 41 by moving the support portion 200 in the direction of the gap 45 substantially in parallel with the distal end portion 42 using the operation rod 100. As a result, the second fastening tool 63 is removed from the locking tool 4.

  After the second fastening tool 63 is removed from the locking tool 4, the second storage case 400 is pulled along the drop cable 2 in a direction away from the utility pole E2. At this time, since the first fastening device 61 connected by the drop cable 2 is locked to the locking device 4, the second fastening device 63 is detached from the second storage case 400. After the second clip 63 is detached from the second storage case 400, the drop cable 2 is removed from the case body 410.

  Subsequently, the first retaining case 61 is removed using the first storage case 300. In addition, the method of removing the retainer 61 from the locking member 4 using the first storage case 300 is possible by the same method as the method of removing the second retainer 63 using the second storage case 400 described above. Therefore, the description of the details of the removal method using the first storage case 300 of the first clasp 61 is omitted. Thereby, the 1st fastening tool 61 and the 2nd fastening tool 63 which were latched by the latching tool 4 are removed, and the drop cable 2 can be removed from the utility pole E2.

  According to the retaining tool engaging / disengaging tool 1, the retaining tool locking method, and the retaining tool removing method configured as described above, the retaining tool 4 of the utility pole E2 located at a height of several meters from the ground The first and second fasteners 61 and 63 fixed to the drop cable 2 can be directly locked from the ground. Moreover, the 1st securing tool 61 and the 2nd securing tool 63 latched by the securing tool 4 of the utility pole E2 located in the height of several meters from the ground can be removed from the ground. Moreover, the new installation and removal operation | work of the drop cable 2 using the retainer engagement / disengagement tool 1 can be used also on the sloping ground and the narrow area where an aerial work vehicle cannot be used. For this reason, it is not necessary to install a ladder on the utility pole E2 and go up and down each time a new drop cable 2 is installed and removed.

  In addition, for example, the first clasp 61 housed in the first housing case 300 as described above can be easily locked by moving the support portion 200 in the vertical and horizontal directions. For this reason, the support part 200 does not largely tilt. Therefore, the second fastener 63 stored in the second storage case 400 at the same time does not fall during the attaching operation of the first fastener 61. Further, since the projecting portions 313 and 413 are provided at the rear end portions of the case bodies 310 and 410, the retaining device 6 once stored from the rear end portion of the first storage case 300 or the second storage case 400. There is no sliding down. For this reason, for example, when the retainer 6 is removed, the retainer 6 is stored in the first storage case 300 or the second storage case 400, so that the drop cable 2 is connected to the operator or the vicinity. It can prevent falling.

  Further, a simple structure in which the tip of the first arm portion 230 or the second arm portion 250 is sandwiched between two opposing plate-like members protruding from the case support portions 390 and 490 and is fixed with a bolt that also serves as a rotating shaft. Therefore, it is hard to break down and is easy to repair. It should be noted that the degree of rotation and stop of the case support portions 390 and 490 and the first arm portion 230 and the second arm portion 250 can be adjusted by the bolt tightening degree. Further, by inserting an elastic body such as a rubber material between the case support portions 390 and 490 and the first arm portion 230 or the second arm portion 250, the friction can be changed and fixed at a desired angle. Is possible.

  Moreover, the 1st storage case 300 and the 2nd storage case 400 operate | move like when the operator removes the fastener 6 from the latching tool 4 by hand. Specifically, the retaining member 6 fixed in the first storage case 300 or the second storage case 400 can be rotated along the shape of the hook portion 41 to remove the ring portion 67 from the hook portion 41. It is. For this reason, since both the locking member 4 and the ring part 67 of the retaining member 6 are not broken, they can be reused. In addition, there is no possibility that the ring portion 67 of the retainer 6 is broken and remains in the locking device 4, and there is no fear that fragments will fly around the utility pole E2.

  Further, the clasp engagement / disengagement tool 1 according to the present embodiment has a front guide 330 or 440 at the front end portion of the case body 310 or 410. For this reason, the drop cable 2 can be easily introduced into the slit 352 or 452 from above the first opening 351 or 451 when the retainer 6 is removed. Further, the retainer engaging / disengaging tool 1 has a side guide 370 or 470 and a wing-shaped rear guide 350 or 450. For this reason, for example, even when the drop cable 2 captured by the front guide 330 or 440 is curved at the rear position thereof, the wing-shaped rear guide formed at the rear of the case body 310 or 410 supports the drop cable 2. It can be captured and introduced into the slit 311 or 411.

  Therefore, since the drop cable 2 can be easily introduced into the first storage case 300 or the second storage case 400 when the retainer 6 is removed, the work time related to the removal of the retainer 6 can be shortened.

  Further, by using the retainer engaging / disengaging tool 1 and the retainer locking method according to the present embodiment, the two retainers 6 fixed to the drop cable 2 locked to the lock 4 are firstly connected. Using the one arm portion 230 and the second arm portion 250, the two fastening devices 6 can be locked to the locking device 4 by a single locking operation. For this reason, the burden of raising and lowering the operating rod 100 is reduced and the working time can be shortened.

  According to the retainer engagement / disengagement tool 1, the retainer engagement method, and the removal method according to the embodiment of the present invention, it is possible to newly install and remove the drop cable from the ground, and to improve operability. In addition, it is possible to provide an excellent low-cost retainer engagement / disengagement tool, a retainer locking method, and a removal method.

  In addition, this invention is not limited to embodiment mentioned above.

  In the retainer engagement / disengagement tool 1 according to the embodiment of the present invention, the case support portions 390 and 490 rotate and rotate on the rotation shafts 391 and 491 by friction with the first arm portion 230 and the second arm portion 250. Although it can be fixed freely, the fixing method is not limited to this. For example, the rotation shafts 391 and 491 are formed so as to be rotatable, and pressing members extending from the case support portions 390 and 490 to the first arm portion 230 and the second arm portion 250, respectively, can be provided and fixed at an arbitrary angle. It is also possible to form. It is possible to prevent the first storage case 300 or the second storage case 400 from coming into contact with another cable wired to the utility pole and changing the angle unexpectedly by fixing the holding member more securely using the pressing member.

  In addition, the front guides 330 and 430 and the rear guides 350 and 450 of the present embodiment are formed using a resin material plate. However, any material having a certain degree of flexibility and strength may be used. Not limited to. For example, a metal plate or a paper plate can be used. Further, the size and shape of the wing shape of the front guides 330 and 430 and the rear guides 350 and 450 can be appropriately changed in consideration of the thickness of the drop cable 2, the degree of bending, the thickness of the utility pole, and the like. For example, the front guides 330 and 430 and the rear guides 350 and 450 can be replaced with the case bodies 310 and 410 by preparing a plurality of types of shapes.

  Moreover, in this embodiment, although the substantially L-shaped 1st arm part 230 and the 2nd arm part 250 are provided, removal of the fastener 6 is not restricted to this shape in particular. For example, the shape which provided the storage case at the front-end | tip of an I-shaped member instead of a substantially L-shaped member may be sufficient. In other words, the clasp 6 can be removed using a tool having one storage case at the tip of one arm. By using one arm, the weight of the tool can be further reduced.

  Further, the shape of the opening formed by the protrusions 313 and 413 provided at the rear ends of the case bodies 310 and 410 is not limited to the diamond shape. It may have a circular shape, an oval shape, or any other shape, as long as it has a structure that prevents the retainer 6 from falling from the rear end and a structure that allows the drop cable 2 to be smoothly pulled out after the retainer 6 is locked. Good.

  Moreover, it is also possible to attach a reflective surface, a scale, etc. to the outer surface of case body 310 and 410, and to make it easy to grasp | ascertain the distance with the locking tool 4 at the time of engagement / disengagement of the fastening tool 6. FIG.

  Of course, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Fastening tool engagement / detachment tool, 2 ... Drop cable, 2A ... Drop cable, 2B ... Drop cable, 4 ... Locking tool, 6 ... Fastening tool, 21 ... Main part, 23 ... Support line part, 25 ... Protection Cover, 27 ... Tape, 41 ... Hook part, 42 ... Tip part, 43 ... Drop prevention part, 45 ... Gap, 61 ... First fastening device, 63 ... Second fastening device, 65 ... Support, 67 ... Ring , 69 ... convex part, 100 ... operating rod, 200 ... support part, 210 ... coupling part, 230 ... first arm part, 231 ... first surface, 233 ... second surface, 235 ... third surface, 237 ... first 4th surface, 250 ... 2nd arm part, 251 ... 1st surface, 253 ... 2nd surface, 255 ... 3rd surface, 257 ... 4th surface, 270 ... attachment part, 300 ... 1st storage case, 310 ... case body 311 ... slit, 332 ... slit, 312 ... first side surface portion, 313 ... projection, 14 ... 2nd side surface part, 316 ... 3rd side surface part, 318 ... 4th side surface part, 330 ... Front guide, 331 ... 1st opening part, 350 ... Rear surface guide, 351 ... 2nd opening part, 352 ... Slit, 370 ... Side guide, 390 ... Case support part 391 ... Rotating shaft, 400 ... Second storage case, 410 ... Case body, 411 ... Slit, 432 ... Slit, 412 ... First side part, 413 ... Projection, 414 ... No. 2 side face parts, 416 ... 3rd side face part, 418 ... 4th side face part, 430 ... front guide, 431 ... 1st opening part, 450 ... rear face guide, 451 ... 2nd opening part, 452 ... slit, 470 ... side guide 490 ... case support, 491 ... rotating shaft E1 ... electric pole, E2 ... electric pole, H ... house.

Claims (6)

Disengagement of the first retaining tool fixed to the main-side drop cable and the second retaining tool fixed to the house-side drop cable, which are locked to the locking tool installed on the upper part of the pull-in column A retainer engagement / disengagement tool,
An operation bar;
A substantially L-shaped support portion that is fixed to the tip of the operation rod and includes first and second arm portions substantially orthogonal to the axial direction of the operation rod;
The first and second arm portions are arranged at the tips of the first and second arm portions so as to be substantially orthogonal to the longitudinal direction of the first and second arm portions, respectively, the first and second retaining devices are accommodated, and the drop cable is taken in and out. First and second storage cases having substantially box-shaped case bodies provided with possible slits on the side surfaces;
A case support portion that rotatably supports the first and second storage cases by rotation shafts oriented in the same direction as the slit direction at the tips of the first and second arm portions, respectively.
A retainer engagement / disengagement tool characterized by comprising:   The said case body has a front surface guide and rear surface guide which have a taper surface in both ends, and assists drawing operation of the said drop cable to the said case body, The clasp of Claim 1 characterized by the above-mentioned. Engagement tool.   The retainer engagement / disengagement tool according to claim 1, wherein a rear end portion of the case body is provided with a protrusion for preventing the retainer from dropping.   The retainer engagement / disengagement tool according to claim 1, wherein the case support portion is formed so as to be fixed at an arbitrary rotation angle by friction with the first or second arm portion. The first retaining member fixed to the main line-side drop cable and the second retaining member fixed to the house-side drop cable are retained by the retaining member installed on the upper portion of the drawing column. A retaining device locking method,
A case support provided at the tip of a substantially L-shaped support provided with a first arm and a second arm that are fixed to the tip of the operation rod and arranged in a direction substantially perpendicular to the axial direction of the operation rod; The slits provided in the side portions of the first storage case and the second storage case having a box-shaped case body that is substantially orthogonal to the longitudinal direction of the first or second arm portion that is rotatable about a rotation axis. Arranging the first storage case and the second storage case in a downward position facing downward in the axial direction;
Storing the first and second fastening devices of the drop cable in the first and second storage cases disposed in the downward position;
The first storage case in which the first fastener is stored is brought close to the position of the locking tool, and the first storage case stored in the first storage case is rotated by the first storage case. Locking to the locking tool with movement;
With the operation of moving the first storage case in a direction away from the locking tool, taking out the first retaining tool from the first storage case and pulling out the drop cable from the slit;
The second storage case in which the second fastener is stored is brought close to the position of the locking device, and the second storage case stored in the second storage case is rotated by the second storage case. Locking to the locking tool with movement;
The second holding case is removed from the second storage case and the drop cable is extracted from the slit in accordance with an operation of moving the second storage case in a direction away from the locking tool. The clasp locking method. A retractor removal method for removing a retainer fixed to a drop cable locked to a retainer installed on an upper part of a pull-in column,
A storage that is fixed to the tip of the operation rod and is rotatable about the rotation axis of the case support that is substantially orthogonal to the longitudinal direction of the support provided at the tip of the support that is substantially orthogonal to the axial direction of the operation rod. Disposing the storage case at an upward position in which a slit that is substantially orthogonal to the longitudinal direction of the support portion provided on the side surface portion of the case faces upward in the axial direction;
The front end of the front guide provided in the storage case arranged in the upward position is made to approach the direction of the drop cable,
Insert the drop cable into the slit through the front guide,
The retractor is pulled into the storage case along the drop cable inserted into the storage case from the slit,
With the operation of rotating the storage case in which the fastener is retracted about the rotation axis of the case support part, the engagement between the fastener and the locking tool is released,
With the operation of moving the storage case in a direction away from the locking tool, the locking tool is taken out, the drop cable is pulled out from the slit, and the locking tool is removed from the locking tool. How to remove the clasp.