JP5335034B2 - Arm changer - Google Patents

Description

  The present invention relates to an armrest changing apparatus for exchanging an armrest fixed to a utility pole, and more particularly to an armrest exchanging apparatus for exchanging an armrest to which a strap connected to a tension insulator is attached. .

  Conventionally, a brace extending in a direction crossing the axis of the utility pole is attached to the utility pole that supports the overhead wire. More specifically, as shown in FIG. 7, the power pole 103 is connected to the arm metal 101 attached to the power pole 103 and the arm metal 101, and extends in a direction substantially orthogonal to the axis of the arm metal 101. The straps 112, 112, 112, 112 and the tension insulators 111a, 111a, 111b, 111b removably coupled to the straps 112, 112, 112, 112 are attached. The arm metal 101 is provided with straps 112, 112, 112, 112, and tension-resistant insulators 111 a, 111 a, 111 b, 111 b on both sides of its own axis so as to support the middle of the overhead wire 100 intersecting with the arm metal 101. . The overhead line 100 supported by the utility pole 103 is arranged above the armor 101 so as to intersect the armor 101, and the overhead line 100 (hereinafter referred to as the power transmission direction upstream (primary side) with the armor 101 as a boundary. , The primary overhead line 100) is connected to the tension insulators 111a and 111b on one side, and the downstream side (secondary side) overhead line 100 (hereinafter referred to as the secondary side overhead line 100) in the direction of power transmission is connected to the other side. It is connected to the insulators 111a and 111b and is bridged over the utility pole 103.

  By the way, the brace 101 attached to the utility pole 103 may be exchanged with aging. In this case, the tension insulators 111a, 111a, 111b, 111b and the straps 112, 112, 112, 112 are connected. Alternatively, it is necessary to release the connection between the straps 112, 112, 112, 112 and the arm metal 101 and remove the arm metal 101. At that time, assuming that the overhead line 100 needs to be in a power failure state, an armrest changer that replaces the armrest 101 without powering the overhead line 100 is provided (for example, see Patent Document 1).

  As shown in FIG. 8, the armrest changing apparatus includes a fixed portion 10 fixed to the utility pole 103 and a movable portion 20 provided alongside the fixed portion 10 so as to be movable in a direction away from and closer to the utility pole 103. And an overhead wire holding portion 30 provided on the distal end side of the movable portion 20 to hold the overhead wire 100 and to be movable up and down or to extend and retract, and insulator holding portions 40a and 40b to hold the tension insulators 111a and 111b. The bridging part 50 spanned between the overhead wire holding part 30 and the insulator holding parts 40a, 40b, and the bridging part 50 spanned between the fixed part 10 or the movable part 20 and the bridging part 50, and And a support portion 60 that can be raised and lowered or expanded and contracted according to the expansion and contraction.

  In order to replace the arm metal 101 using such an arm metal exchanging device, first, the arm metal exchanging device is set to either the primary side overhead wire 100 or the secondary side overhead wire 100, and the movable part 20 is connected to the utility pole 103. By bringing them closer to each other, the overhead wire 100 is drawn toward the utility pole 103 side, and the tension applied to the arm metal 101 from the overhead wire 100 via the straps 112, 112, 112, 112 is converted to the overhead wire holding unit 30. Then, the tension insulators 111a and 111b can bring the movable portion 20 and the bridging portion 50 closer to the utility pole 103 while maintaining the initial horizontal posture without being inclined. In this state, the straps 112, 112, 112, 112 are removed from the brace 101. As described above, since no tension is applied between the straps 112, 112, 112, 112 and the arm metal 101, the straps 112, 112, 112, 112 can be easily detached from the arm metal 101.

  Next, the strap connected to the other side of the arm metal 101 is set by setting the arm metal changing device to either the primary side overhead wire 100 or the secondary side overhead wire 100 and performing the same operation as described above. 112, 112, 112, 112 are removed from the bracelet 101. Thus, the arm metal 101 can be exchanged by setting the arm arm 101 not attached to the straps 112, 112, 112, 112. After exchanging the brace 101, it is possible to return to the original state (a state where the primary side overhead line 100 and the secondary side overhead line 100 are supported by the utility pole 103) by performing the reverse operation.

JP 2009-824 A

  However, when exchanging the brace 101 using this type of brace exchange apparatus, it is necessary to assemble the apparatus for the primary side overhead line 100 and the secondary side overhead line 100 each time. That is, the apparatus is assembled in order separately on one side and the other side of the arm metal 101, and the straps 112, 112, 112, 112 are separately detached from the arm metal 101 on the one side and the other side of the arm metal 101. There is a problem that the work needs to be removed and the work becomes complicated.

  In addition, when exchanging the arm metal 101 using this type of arm arm exchanging device, the arm metal 101 to the strap 112 from one side with respect to the primary side cable 100 and the secondary side cable 100 as described above, Since 112, 112, 112 are removed, the manner of the action of the force on the primary side overhead line 100 and the secondary side overhead line 100 is different, and the balance of the primary side overhead line 100 and the secondary side overhead line 100 is deteriorated. 100 may turn in the wrong direction.

  Therefore, in view of such circumstances, the present invention provides a balance between the overhead wire and the armature to which the tension insulator is attached via the strap without the complicated work of assembling the device each time the armor is replaced. It is an object to provide a bracelet exchanging device that can be exchanged while maintaining the above.

The armrest changer according to the present invention is an armrest attached so as to extend in a direction intersecting with the axis of the utility pole, and the tension insulators arranged on both sides in the direction intersecting with the axis of the armrest are removed. In a bracelet exchange device for exchanging bracelets that support at least a pair of straps that can be connected, a main body portion that is long in a direction along the axis of the utility pole, and a direction that intersects the longitudinal direction of the main body portion The bar has a longitudinal shape and can be repositioned in the longitudinal direction of the main body, and has a bar-shaped holding portion that holds the overhead wire at one end, and a tensile force that causes both ends to approach each other. And at least two connecting means connected to the other end of the tension generating means in a swingable manner.

  When the other end portions of the independent tension generating means are connected to each connecting means, each tension generating means can be slid with a degree of freedom with respect to each connecting means. Thus, the posture of at least two tension generating means can be changed in accordance with the primary overhead line and the secondary overhead line with the arm metal as a boundary.

  Therefore, by swinging the support end (other end portion) of each tension generating means relative to each connecting means, the tension generating means moves along the direction (posture) of the primary side overhead line and the secondary side overhead line, Even if the balance of the overhead wires is poor due to the arrangement of the utility poles, they are bridged on both sides of the utility poles in the vertical direction of the utility pole (the same direction as the axis of the utility pole) and in the left-right direction (direction substantially perpendicular to the axis of the utility pole) Can be balanced.

  And when exchanging the brace using the brace exchanging device having the above configuration, first, with the bar facing the same direction with respect to the brace, first, the main body and the utility pole Align the axis and attach the main unit to the utility pole. Next, one end (holding portion) of one of the two tension generating means is connected to the primary side overhead wire, and one end (holding portion) of the other tension generating means is connected to the secondary side overhead wire. Link.

  In this state, when a tensile force that causes both ends to approach each other is applied to each tension generating means, the primary side overhead wire and the secondary side overhead wire are pulled to the utility pole side and are applied to the tension insulator from the overhead wire. The tension is converted into an overhead wire holding portion provided at one end of the tension generating means, and the tension acting between the arm metal, the strap, and the tension-resistant insulator can be released. That is, the tension applied to the tension insulator is released, and the tension acting between the arm metal, the strap, and the tension insulator is reduced or eliminated. Thereby, in a state where no tension acts between the tension insulator and the strap, the connection between the tension insulator and the strap or the connection between the brace and the strap can be released. Then, by changing the position of the bar in the longitudinal direction of the main body, the tension insulator and the strap are raised together with the overhead wire, and the arm can be removed from the utility pole.

  In this state, remove the arm from the utility pole and replace it with a new arm. After the replacement of the armrest with a new armrest, the original state (the primary and secondary overhead wires are fixed to the utility pole by the armrest by performing the procedure in the reverse order of removing the armrest from the utility pole. Can be restored.

  Moreover, it is preferable to provide an insulator support portion that can be temporarily supported by the tension insulator, and the insulator support portion is directly or indirectly attached to the bar.

  As described above, when the armature is replaced, the connection between the tension insulator and the strap is released, so that the tension insulator comes off and hangs, and the tension insulator formed by the porcelain breaks due to collision with the surroundings. It may be done. However, according to the brace exchanging device having the above-described configuration, the lever support portion that can temporarily support the tension insulator is provided, and the lever support portion is directly or indirectly attached to the bar. By temporarily supporting the tension insulator on the provided insulator support portion, the tension insulator is prevented from colliding with the surroundings, and the work can be performed while protecting the tension insulator.

  Moreover, it is preferable that an overhead wire support portion capable of supporting an overhead wire between the tension insulators is provided, and the overhead wire support portion is attached to the bar.

  If the tension between the tension insulators is loosened by applying a tensile force that causes the ends to approach each other on the tension generating means, the overhead wire between the tension insulators will change when the bar is repositioned as described above. According to the armrest changing apparatus having the above configuration, the overhead wire support portion that can support the overhead wire is provided, and the overhead wire support portion is attached to the bar. Therefore, the overhead wire support portion attached to the bar By supporting the overhead wire by means of the above, the overhead wire between the tension insulators is lifted together with the tension insulator and the strap, so that the overhead wire does not get in the way at the time of exchanging the brace. Therefore, it is possible to exchange the arm metal stably with the overhead wire supported by the overhead wire support portion.

  Moreover, as another aspect, it is preferable to provide an independent tension generating means connected to each connecting means.

  According to the brace exchanging device having the above-described configuration, the tension generating means is detachably locked to the connecting means while the other end (locking portion) is detachably locked with the overhead wire held by the one end (holding portion). Therefore, in the armrest changing apparatus, the main body, the bar, and the tension generating means can be integrated. Therefore, it is not necessary to assemble the armrest changing device each time, and the device can be easily installed.

  Further, the connecting means corresponds to each overhead wire on the premise that a plurality of the overhead wires are arranged at intervals in the axial direction of the arm metal and a tension insulator and a strap are provided corresponding to each overhead wire. Thus, it is preferable that a plurality are provided.

  By doing in this way, in the brace exchanging device configured as described above, the tension generating means connected to each connecting means can release the action of tension on the plurality of overhead wires, and the brace can be exchanged in one operation. Work efficiency can be improved.

  Moreover, it is preferable that the said connection means is provided so that a movement with respect to the axial direction of the said bar is possible. By doing in this way, arrangement | positioning of a connection means can be changed freely according to the arrangement | positioning state of the overhead wire spanned over the utility pole.

  Moreover, it is preferable that the said bar is provided so that a movement in the own axial direction is possible. By doing in this way, arrangement | positioning of a connection means can be changed freely according to the arrangement | positioning state of the overhead wire spanned over the utility pole.

  As described above, according to the brace exchanging device of the present invention, the bracelet to which the tension insulator is attached via the strap without the complicated work of assembling the device each time the brace is exchanged. Can be exchanged while maintaining the balance of the overhead wires.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the arm replacement | exchange device which concerns on one Embodiment of this invention, Comprising: (a) is a front view, (b) is a right view. It is a figure which shows the tension | tensile_strength generation | occurrence | production means of the armrest exchange apparatus based on the embodiment. It is a figure which shows the state which attached the armrest exchange apparatus which concerns on the embodiment to the utility pole. It is a figure which shows the state which attached the pair of tension | tensile_strength generating means shown in FIG. 2 to the armrest exchange apparatus based on the embodiment. It is a figure which shows the process in which a tension insulator is removed from a strap using the armrest changer concerning the embodiment. It is a figure which shows the process of exchanging a brace using the brace exchanging apparatus which concerns on the embodiment. It is a figure which shows the state by which the overhead wire was supported by the utility pole via the brace. It is a figure which shows the state by which the conventional armrest exchange apparatus was fixed to the utility pole.

  Hereinafter, a brace changing apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 7, the armrest changing apparatus according to the present embodiment is attached so as to extend in a direction intersecting with the axis of the utility pole 103, and is disposed on both sides in the direction intersecting with its own axis. , 111a, 111b, 111b are used to replace the brace 101 that supports at least a pair of straps 112, 112, 112, 112 to which the removably coupled straps 112, 112, 112, 112 are connected.

  That is, in this embodiment, the tension insulators 111 a, 111 a, 111 b, 111 b are provided on both sides of the arm metal 101, and the three overhead wires 100, 100, 100 are supported in the axial direction of the arm metal 101. explain.

  More specifically, one end of straps 112, 112, 112, 112 extending in a direction substantially orthogonal to the axis line is detachably connected to both sides of the arm metal 101, and the straps 112, 112, 112, Among the pair of tension insulators 111a, 111a or the pair of tension insulators 111a, 111a, 111b, 111b (two on each side of the arm metal 101 in this embodiment) via the other end of 112, One ends of the tension insulators 111a and 111a on the proximal side of the arm metal 101 are detachably connected. Further, a tension clamp (not shown) covered with a cover 114 is connected to the other end of the tension-resistant insulators 111b and 111b on the distal side of the arm metal 101 (see FIG. 3).

  The straps 112, 112, 112, 112 are provided with through holes (not shown) at the tips, and pin insulator pins 115 and the like are inserted into the through holes and the through holes provided in the arm metal 101, and the bolts When the nut 116 is fastened to 115, the straps 112, 112, 112, 112 are attached to the arm metal 101.

  Although not shown, the tension insulators 111a, 111a, 111b, and 111b may be connected to the straps 112, 112, 112, and 112 in series when there are only one pair or three or more pairs. The metal core (not numbered) is partially exposed. In the present embodiment, the tension insulators 111a, 111a, 111b, and 111b are fixed to the straps 112, 112, 112, and 112 by pins 113a, 113a, 113b, and 113b (see FIG. 3).

  Since the tension clamp holds the overhead wire 100, tension is applied from the overhead wire 100 to the arm metal 101 via the tension insulators 111a, 111a, 111b, 111b and the straps 112, 112, 112, 112. 3, one overhead line 100 is illustrated in FIGS. 3 to 7, but in the present embodiment, the three overhead lines 100 are arranged in parallel in the axial direction of the armrest 101.

  As shown in FIG. 1, the arm replacement device 1 according to the present embodiment is long in a direction intersecting the longitudinal direction of the main body 10 and a main body 10 that is long in at least one direction, as shown in FIG. And a bar 20 whose position can be changed in the longitudinal direction of the main body 10.

  In addition, the arm replacement device 1 according to the present embodiment is formed in a rod shape, has an overhead wire holding portion 34 that holds the overhead wire 100 at one end portion, and a tension that applies a tensile force that brings both end portions closer to each other. And at least two connecting means 70 and 70 to which the other end of the generating means 30 (see FIG. 2) is slidably connected. In the present embodiment, the connecting means 70 are provided so as to be movable with respect to the axial direction of the bar 20.

  In the present embodiment, the main body 10 is formed of a material having rigidity, and a fixed portion 10a fixed to the utility pole 103, and a movable portion 10b continuously connected to the fixed portion 10a so as to be movable in one direction. With. At least one of the other end side of the fixed portion 10a and the one end side of the movable portion 10b is provided with lifting portions 11a, 11a to which a hook of a winch or the like can be attached and detached to lift the main body portion 10. In the present embodiment, lifting portions 11a and 11a are provided on the other end side of the fixed portion 10a and one end side of the movable portion 10b.

  The fixing portion 10a is provided with a plurality of utility pole connecting members 12a, 12a,... For fixing to the utility pole 103 in a direction substantially orthogonal to the axial direction. In this embodiment, two utility pole connecting members 12a, 12a... Are provided on the fixing portion 10a. The electric pole connecting members 12a, 12a... Are configured by a plurality of divided bodies, and the electric poles 103 are fastened and fixed by connecting the divided bodies in a state of surrounding the electric pole 103.

  In addition, a fixing pin 13 that can be withdrawn and retracted is attached to the fixing portion 10a, and the fixing pin 13 is inserted into any of a plurality of height adjustment holes 15, 15. Thus, the movable portion 10b can be fixed to the fixed portion 10a.

  The movable portion 10b has a base end (other end) side inserted through one end side of the fixed portion 10a, and is movable in one direction (longitudinal direction). In the present embodiment, the movable portion 10b includes a bar fixing portion 14 for fixing the bar 20 to one end side. In addition, the movable portion 10b is provided with a plurality of height adjustment holes 15, 15... (Four in the present embodiment) at intervals in one direction on the side surface, and the fixing pin 13 is high. The movable portion 10b is fixed to the fixed portion 10a by being inserted into any one of the height adjusting holes 15, 15. Thereby, the movable part 10b can move (change the height) in the vertical direction (longitudinal direction) corresponding to the height of the overhead line 100 spanned between the utility poles 103.

  The bar 20 of the present embodiment is formed in a substantially prismatic shape (see FIG. 1), and is provided so as to be movable in its own axial direction. That is, the bar 20 is inserted into the bar fixing portion 14 of the main body 10 and is movable in its own axial direction. The bar 20 is attached with the above-described connecting means 70 (in the present embodiment, a pair of three connecting means 70, a total of six) and an overhead wire support portion 50 (three in the present embodiment) to be described later. It has been.

  In the present embodiment, the bar 20 is provided with a suspension support body 60 for supporting the connection means 70 in a suspended manner. More specifically, each of the suspension supports 60 includes an insertion portion 61 through which the bar 20 is inserted on one end side, and an insulating portion 62 that has insulation and is connected to the insertion portion 61. A connecting means support portion 40 is suspended and supported at each of the other end portions of the insulating portion 62. In the suspension support body 60, the insertion portion 61 is movable in the axial direction of the bar 20. Thereby, as described above, the connecting means 70 is movable in the axial direction of the bar.

  In the present embodiment, the connecting means 70 and 70 are provided so as to be tiltable with respect to the connecting means support portions 40 and 40. Then, as described above, a total of six connecting means 70 are provided on each connecting means support section 40 so as to correspond to each of the three overhead wires 100 spanned between the utility poles 103 as described above. It has been. As a means for connecting the connecting means 70, 70 to the connecting means support section 40 in a tiltable manner, the angle at which the two members (the connecting means support section 40 and the connecting means 70) are joined can be freely selected (horizontal). Universal joints that can be changed (in the direction, the up-down direction, and the combination direction thereof) may be employed. Examples of the universal joint include a universal joint using a cross-shaped cross spider (a cardan joint, also known as a Fuchs joint), a constant velocity joint using a ball (Zepper joint), and the like. By such a universal joint, the connecting means 70 is rotatable with respect to the connecting means support portion 40 in the horizontal direction, the vertical direction, and the combination direction thereof.

  In a state where a plurality of (in the present embodiment, three) overhead lines 100 are fixed at substantially the same position of the utility pole 103, for example, the middle overhead line 100 of the three overhead lines 100 is in relation to the other overhead lines 100. May be fixed to the utility pole at a slightly lower position. In that case, the connecting means 70 and 70 of the suspension support 60 corresponding to the middle overhead line 100 are compared with the connection means 70 and 70 connected to the connection means support 40 of the other suspension support 60. Need to be installed in a low position. For this reason, in this embodiment, among the suspension supports 60, 60, 60, the insulating portion 62 of the suspension support 60 located in the middle is the other suspension to correspond to the arrangement state of the overhead wire 100. It is formed so as to be longer than the insulating part 62 of the support body 60.

  The brace changing apparatus 1 according to the present embodiment includes tension generating means 30 that are independent of each of the connecting means 70 and 70. Specifically, in the present embodiment, since the arm metal 101 for fixing the three overhead wires 100 spanned between the utility poles 103 to the utility pole 103 is replaceable, three pairs of tension generating means 30 (a pair of tension generating means 30) Three tension generating means 30) are used. In the present embodiment, a strain rod is employed as the tension generating means 30.

  As shown in FIG. 2, in the present embodiment, the tension generating means (strain rod) 30 is connected to a gripping portion 31 for holding by hand and the like, and to the other end side of the gripping portion 31 so as to be stretchable. It has a telescopic part 32 and is slidably attached to the connecting means 70, 70 described above. At one end portion of the strain rod 30 (expandable portion 32), a locking portion 33 that can be locked to the connecting means 70, 70 is provided, and one end side and the other end side of the strain rod 30 (gripping portion 31). Are provided with an overhead wire holding portion 34 and an overhead wire support 36 that can hold the overhead wire 100.

  The grip portion 31 includes a twist lock 35 for moving the telescopic portion 32 with respect to the grip portion 31. In the present embodiment, a rotary type is adopted as the twist lock 35. By rotating the twist lock 35, the expansion / contraction part 32 moves in the axial direction with respect to the grip part 31, and is configured to move so that both ends are close to each other. In the present embodiment, the rotary type is adopted as the twist lock 35, but the present invention is not limited to this. For example, a hydraulic type or an electric type can be adopted, and the twist lock 35 is attached to the grip portion 31. On the other hand, any configuration that expands / contracts the expansion / contraction part 32 may be used.

Returning to FIG. 1, the armrest changing apparatus 1 according to the present embodiment includes an overhead wire support portion 50 that can support the overhead wire 100 between the tension insulators 111 a and 111 a. The overhead wire support 50 is attached to the bar 20. The overhead wire support portion 50 of the present embodiment is formed in a ring shape that can be opened and closed, and is attached to the bar 20 via at least one lever (three in this embodiment). In the present embodiment, three overhead wire support portions 50 are provided to support each of the three overhead wires 100 spanned over the utility pole 103.

  Furthermore, the arm replacement apparatus 1 according to the present embodiment includes an insulator support portion 80 that can be temporarily supported by being connected to the tension insulators 111a and 111a. In this embodiment, the insulator support part 80 is directly or indirectly attached to the bar 20. In this embodiment, the insulator support part 80 is attached to the bar 20 (specifically, each connection means support part 40 attached to each insulation part 62). Insulator support portions 80, 80 are provided for each of the three connecting means support portions 40 (6 in total) so as to support each of the three overhead wires 100 spanning the utility pole 103. .

  In other words, in the present embodiment, a plurality of the overhead wires 100 are arranged at intervals in the axial direction of the arm metal 101 (three in the present embodiment), and the tension insulators 111a corresponding to each overhead wire 100 are arranged. , 111a, 111b, 111b and straps 112, 112, 112, 112, a plurality of connecting means 70, 70 corresponding to each overhead line 100 (two in this embodiment, a total of 6). Pieces).

  The description of the configuration of the armrest changing apparatus 1 according to the present embodiment is as described above. Next, using the armrest changing apparatus 1 according to the present embodiment, the tension levers 111a, 111a, 111b, and 111b are attached. An operation of exchanging the arm metal 101 to which the connected straps 112, 112, 112, 112 are attached will be described.

  When exchanging the brace 101 using the brace exchanging apparatus 1 according to the present embodiment, first, as shown in FIG. The main body 10 is attached to the utility pole 103 with the axis of the part 10 and the utility pole 103 aligned. More specifically, the utility pole 103 is fastened and fixed by the utility pole connecting members 12 a and 12 a provided on the fixing portion 10 b of the main body 10.

  And as shown in FIG. 4, the other end part (locking part 33) of each independent strain rod 30 is attached to each connection means 70 and 70 attached to the suspension support body 60 so that sliding is possible, respectively. The strain rod 30 is allowed to swing with a degree of freedom with respect to the connecting means 70, 70.

  Next, the overhead wire holding portion 34 and the overhead wire support 36 of one strain rod 30 of the two tension generating means 30 and 30 are connected to the primary side overhead wire 100, and the overhead wire holding portion 34 of the other strain rod 30 and The overhead wire support 36 is connected to the secondary overhead wire 100.

  In the present embodiment, in order to connect the pair of strain rods 30 to each of the three overhead wires 100 spanned over the utility pole 103, the connecting means 70, 70 attached to each suspension support 60. Each strain rod 30 is attached to each to be ready for use.

  Then, by rotating the respective twist locks 35 of the pair of strain rods 30 and applying a pulling force that causes both ends of the strain rods 30 to approach each other, the overhead wires 100 (primary overhead wire 100 and The secondary overhead wire 100) is pulled toward the utility pole 103, and the tension applied from the overhead wire 100 to the tension insulators 111a, 111a, 111b, 111b is converted to the overhead wire holding portion 34 provided at one end of the strain rod 30. Then, the tension acting between the arm metal 101, the straps 112, 112, 112, 112 and the tension insulators 111a, 111a, 111b, 111b can be released (reducing or eliminating the tension).

Next, as shown in FIG. 5, the overhead wire 100 between the tension insulators 111 a, 111 a, 11 b, and 111 b is held by the overhead wire support portion 50, the pins 113 a and 113 b are removed, and the tension insulators 111 a and 111 a and the strap 112 are removed. , 112, 112, 112 are released.

  Then, as shown in FIG. 6, one end of the tension insulators 111 a, 111 a removed from the straps 112, 112, 112, 112 is temporarily supported on the insulator support portions 80, 80 of the bar 20, and the arm metal 101 is attached to the strap 112. , 112, 112, 112 are removed. And the main-body part 10 is lifted to the upward direction of an arrow with respect to the utility pole 103 using a winch etc. (not shown).

  Then, the new brace 101 to which the straps 112, 112, 112, 112 are attached is fixed to the utility pole 103.

When the replacement with the new arm bracket 101 is completed, the operation is performed in the reverse procedure to the above. That is, the main body 10 is moved downward with respect to the utility pole 103 by using a winch or the like (not shown), and the original positions (stretch-resistant insulators 111a, 111a, 111b, 111b and straps 112, 112, 112, 112). The bar 20 is moved in one direction (downward) so as to be a corresponding position. The tension strain insulator 111a has been temporarily fixed to the insulator support portion 80, 80, 111a, 111b, and 111b removed from the insulator support portion 80, 80, the pin 113a, the 113a strap 112,112,112,112 Insulators 111a, 111a, 111b, 11
Connect 1b.

  After that, by applying a force to the strain rod 30 to separate both ends, the overhead wires 100 (the primary overhead wire 100 and the secondary overhead wire 100) on both sides of the arm metal 101 are moved away from the utility pole 103 side. The tension applied to the overhead wire holding portion 34 provided at one end of the 30 is converted from the overhead wire 100 to the tension insulators 111a, 111a, 111b, 111b, and the tension insulators 111a, 111a, 111b, 111b and the strap 112 are converted. , 112, 112, 112, and the arm metal 101, the overhead wire 100 can be returned to the original state. Note that each of the other two overhead wires 100 can be returned to the original state by performing the same operation.

  Then, when a series of work is completed, the overhead wire holding part 34 and the overhead wire support 36 of each strain rod 30 are removed from each overhead wire 100, and the main body part 10 is separated from the utility pole 103, whereby all the work is finished.

As described above, the arm metal changing device 1 according to the present embodiment has a main body 10 that is long in at least one direction, and a length that intersects the longitudinal direction of the main body 10, and the length of the main body 10 is long. Of the tension generating means 30 that has a bar 20 that can be repositioned in a direction and an overhead wire support portion 50 that is formed in a rod shape and holds the overhead wire 100 at one end, and that exerts a tensile force that brings both ends closer together. Since the other end portion is provided with at least two connecting means 70 and 70 that are slidably connected, the supporting end (other end portion) of each tension generating means 30 is slid relative to each connecting means 70 and 70. Thus, even if the tension generating means 30 moves along the direction (posture) of the primary side overhead line 100 and the secondary side overhead line 100 and the balance of the overhead line 100 is poor due to the arrangement state of the electrical pole 103, direction( Axis in the same direction of the column 103), and in the horizontal direction (the axis direction substantially perpendicular electric pole 103), it is possible to balance the overhead wire 100 passed hung on both sides of the utility pole 103.

  In addition, the arm replacement apparatus 1 according to the present embodiment includes lever support portions 80 and 80 that can be temporarily supported by the tension levers 111a and 111a, and the lever support portions 80 and 80 are directly or indirectly attached to the bar 20. Since the tension insulators 111a and 111a are temporarily supported by the insulator support portions 80 and 80 attached to the bar 20, the tension insulators 111a and 111a are prevented from colliding with the surroundings. The work can be performed while protecting the tension insulators 111a and 111a.

  Furthermore, according to the armrest changing apparatus 1 according to the present embodiment, the overhead wire support part 50 that can support the overhead line 100 between the tension insulators 111a, 111a, 111b, and 111b is provided, and the overhead line support part 50 is the bar 20. Since the overhead wire 100 is supported by the overhead wire support portion 50 attached to the bar 20, the overhead wire 100 between the tension insulators 111a, 111a, 111b, and 111b becomes the tension insulators 111a, 111a, 111b, 111b and the straps 112, 112, 112, 112 are lifted together, so that the overhead wire 100 does not get in the way when the arm bracket 101 is replaced. Therefore, it is possible to exchange the arm metal stably while the overhead wire 100 is supported by the overhead wire support portion 50.

  Further, as another aspect, since the tension generating means connected to each connecting means is provided independently, it is not necessary to assemble the brace changing apparatus 1 each time, and the apparatus can be easily installed.

  In addition, a plurality of overhead wires 100 are arranged at intervals in the axial direction of the arm metal 101, and tension insulators 111a, 111a, 111b, 111b and straps 112, 112, 112, 112 are provided corresponding to each overhead wire 100. Since a plurality of connecting means 70 and 70 are provided corresponding to each overhead wire 100 on the premise that they are provided, the tension generating means 30 connected to each connecting means 70 and 70 exerts a tension action on the plurality of overhead wires 100. It can be released and the brace 101 can be exchanged in a single operation, and the work efficiency can be improved.

  Further, since the connecting means 70 and 70 are provided so as to be movable with respect to the axial direction of the bar 20, the connecting means 70 and 70 are arranged according to the arrangement state of the overhead wire 100 spanned over the utility pole 103. It can be changed freely.

  In addition, since the bar 20 is provided so as to be movable in its own axial direction, the arrangement of the connecting means 70 and 70 can be freely changed according to the arrangement state of the overhead wire 100 spanned over the utility pole 103. it can.

  In addition, this invention is not limited to the said embodiment, Of course, it can change suitably in the range which does not deviate from the summary of this invention.

  In the above embodiment, the armrest changing apparatus 1 has the main body portion 10 formed of a rigid material, and is movable in a telescopic manner from a fixed portion 10a fixed to the utility pole 103 and one end side of the fixed portion 10a. Although the movable part 10b is provided, the present invention is not limited to this. For example, the fixed part 10a and the movable part 10b of the main body part 10 are integrated, and the entire main body part 10 is suspended from the utility pole 103. It may be. Further, for example, the main body 10 may be configured such that the fixed portion 10 a and the movable portion 10 b are integrated, and the bar 20 can move up and down with respect to the main body 10. Alternatively, the bar 20 may be fixed to the main body 10.

  Alternatively, for example, as in the present embodiment, the main body portion 10 may be expanded and contracted (the movable portion 10b can be expanded and contracted relative to the fixed portion 10a), and the bar 20 may also be movable up and down. . In short, the main body 10 and the bar 20 may be configured so that the height can be changed (position can be changed) in accordance with the height of the overhead wire 100 spanned over the utility pole 103.

  In the above embodiment, the fixing portion 10a is provided with a plurality of utility pole connecting members 12a, 12a,... For fixing to the utility pole 103 in a direction substantially orthogonal to the axial direction, but is not limited thereto. Instead, for example, the fixing portion 10a may be fixed to the electric pole 103 using a band instead of the electric pole connecting members 12a, 12a. In this case, it goes without saying that the band can be fixed to the utility pole 103 and has rigidity enough to support the main body 10.

  In the above embodiment, the main body 10 (movable part 10b) is lifted with a winch or the like with respect to the utility pole 103. However, the present invention is not limited to this. For example, the fixed part 10a and the movable part 10b of the main body 10 have pistons. You may make it have a structure. In this way, a winch or the like is not necessary, and the movable portion 10b can be lifted more smoothly with respect to the fixed portion 10a than when the movable portion 10b is lifted with a winch or the like.

  In the above-described embodiment, the lifting support unit 60 includes three lifting supports in consideration of the case where the middle overhead line 100 is positioned lower than the other two overhead lines 100 out of the three overhead lines 100. The insulating portion 62 of one lifting support portion 60 of the insulating portions 62 of the portion 60 is formed so as to be long. For example, the insulation of the lifting support portion 60 formed long corresponding to the middle overhead wire 100 is used. The part 62 may be telescopic. By doing in this way, it can respond appropriately by the height of the middle overhead wire 100.

  In the said embodiment, it provided with the insulator support parts 80 and 80 which can temporarily support one end part of a pair of tension insulators 111a and 111a so that attachment or detachment is possible, and this insulator support parts 80 and 80 are on the bar 20 (specifically, However, the present invention is not limited to this. For example, instead of the insulator support portions 80 and 80, a pair of tension-resistant insulators such as a band or a velcro tape is used. 111a and 111a may be suspended and supported by the bar 20. In this case, it goes without saying that the band, the velcro tape or the like can be attached to the bar 20 and has sufficient rigidity to support the pair of tension insulators 111a and 111a.

  In the above embodiment, the one end portion of the pair of strain rods 30 is configured to be the locking portion 33, but is not limited to this. For example, the one end portion is the overhead wire holding portion 34 similar to the other end portion. May be. Moreover, you may use the existing strain rod. In that case, a locking portion 33 as in this embodiment may be provided at one end of an existing strain rod, and the locking portion 33 may be attached to the connecting means 70.

  In the above-described embodiment, the pair of strain rods 30 can be attached and detached, and the pair of strain rods 30 is attached to the bar 20 (specifically, the connecting means 70) of the main body 10 when the arm bracket 101 is replaced. However, the present invention is not limited to this. For example, the pair of strain rods 30 may be slidably fixed to the connecting means 70, and the main body 10 and the pair of strain rods 30 may be integrated.

  In the above embodiment, the straps 112, 112, 112, 112 and the tension insulators 111 a, 111 a are separated when exchanging the metal brace 101. However, the present invention is not limited to this, and the straps 112, 112, 112 are not limited thereto. , 112 may be left on the tension insulators 111a, 111a side, and only the arm metal 101 may be removed and replaced with a new one.

  In the above-described embodiment, a plurality of pairs of connecting means are provided corresponding to a plurality of overhead wires. For example, when a single overhead wire is supported on an arm metal, a pair of connecting means may be provided. In other words, one or more connecting means may be provided according to the number of overhead wires.

DESCRIPTION OF SYMBOLS 1 ... Arm changing apparatus, 10 ... Main-body part, 10a ... Fixed part, 10b ... Movable part, 11a, 11b ... Lifting part, 12a, 12a ... Electric pole connecting member, 13 ... Fixing pin, 14 ... Bar fixing part, 15, DESCRIPTION OF SYMBOLS 15 ... Height adjustment hole, 20 ... Bar, 30 ... Tension generating means (strain rod), 31 ... Gripping part, 32 ... Telescopic part, 33 ... Locking part, 34 ... Overhead holding part, 35 ... Twist lock, 36 ... Overhead wire support, 40 ... connection means support portion, 50 ... overhead wire support portion , 60 ... hanging support, 61 ... insertion portion, 62 ... insulating portion, 70 ... connection means, 80 ... insulator support portion, 100 ... overhead wire, 101 ... arm, 103 ... electric pole, 111a, 111b ... tension insulator, 112 ... strap, 113a, 113b ... pin, 114 ... cover

Claims (7)

A brace attached to extend in a direction intersecting with the axis of the utility pole, and comprising at least a pair of straps to which the tension insulators disposed on both sides in the direction intersecting with the axis of the brace are removably connected. In a brace exchange apparatus for exchanging a brace to support, a main body having a length in a direction along the axis of the power pole, and a longitudinal direction in a direction crossing the longitudinal direction of the main body, the longitudinal direction of the main body being A bar that can be repositioned and an overhead wire holding part that holds the overhead wire at one end, and the other end of the tension generating means that applies a pulling force that brings both ends closer together can be swung. And at least two connecting means connected to each other.   The arm changer according to claim 1, further comprising an insulator support portion that can be temporarily supported by the tension insulator, and the insulator support portion is directly or indirectly attached to the bar.     The bracelet changing apparatus according to claim 1 or 2, further comprising an overhead wire support portion capable of supporting an overhead wire between the tension insulators, wherein the overhead wire support portion is attached to the bar.   The bracelet changing apparatus according to any one of claims 1 to 3, further comprising an independent tension generating means connected to each connecting means.   The connecting means corresponds to each overhead wire on the premise that a plurality of the overhead wires are arranged with an interval in the axial direction of the arm metal, and a tension insulator and a strap are provided corresponding to each overhead wire. The armrest changing apparatus according to any one of claims 1 to 3, wherein a plurality of armrest changing apparatuses are provided.   The brace exchanging apparatus according to any one of claims 1 to 5, wherein the connecting means is provided so as to be movable with respect to an axial direction of the bar.   The brace changing apparatus according to any one of claims 1 to 6, wherein the bar is provided so as to be movable in its own axial direction.

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