JP2006149028A - High-voltage live wire supporting jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-voltage live wire supporting jig for easily and safely replacing a high-voltage cutout and reduce a work time. <P>SOLUTION: The high-voltage live wire supporting jig 10 for insulatively supporting a high-voltage live wire while the high-voltage live wire as a charged high-voltage electric wire is supported by and fixed to a supporting member and is provided with a jig body 20 formed from an insulation material, a fixing means 30 provided at one end of the jig body 20 and detachably fixed to the supporting member, and a holding member 40 provided at the other end of the jig body 20 and detachably holding the end of the high-voltage live wire. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a high-voltage live wire support jig used to support a high-voltage live wire connected to a high-voltage cutout when replacing a high-voltage cutout provided in a power distribution facility such as a utility pole.

  Replacement of high-voltage cutouts provided in power distribution facilities such as utility poles is performed after releasing all high-voltage cutouts and removing high-voltage wires from the high-voltage cutouts to be replaced. Such replacement of the high-voltage cutout is performed without causing a power failure. Therefore, the high-voltage electric wire removed from the high-voltage cutout is a charged high-voltage live wire. Thus, the replacement of the high-voltage cutout is an operation for handling the high-voltage live wire, and there is a problem that an accident such as an electric shock or a ground fault of the operator is likely to occur. For this reason, the worker wears high-pressure rubber gloves and insulation garments, attaches armor to the high-voltage live wire, and then fits an insulating terminal cap to the tip of the high-voltage live wire removed from the high-pressure cut-out, The wire was supported on a support member such as an arm member holding a high-pressure cut-out via an insulating sheet or the like. Various terminal caps that are fitted to the tip of the high-voltage live wire have been proposed (see, for example, Patent Documents 1 and 2).

  However, the replacement of the high-pressure cut-out is a work on the utility pole, the working space is limited, the scaffolding is bad, the working posture is cramped, and the work efficiency is poor because high-pressure rubber gloves are worn. There is a problem that it takes a lot of time to work.

  In addition, when attaching the armor to the high-voltage live wire, if a load is applied to the high-voltage live wire, a load is applied to the high-pressure cut-out, and the high-pressure cut-out falls if the high-pressure cut-out is damaged. There is a problem that an accident such as an electric shock or a ground fault occurs due to the disconnection of the high-voltage live line from the high-pressure cut-out.

Japanese Patent Laid-Open No. 10-040758 (pages 2 and 3, FIG. 1) Japanese Patent Laid-Open No. 9-074635 (pages 2 to 3 and FIGS. 1 to 4)

  In view of such a problem, an object of the present invention is to provide a high-pressure live wire support jig that can easily and safely replace a high-pressure cutout and can reduce the working time.

  A first aspect of the present invention that solves the above-described problem is a high-voltage live wire that supports the high-voltage live wire in an insulated state while being fixed to a support member that supports a high-voltage live wire that is a charged high-voltage wire. A jig body made of an insulating material; a fixing means provided on one end side of the jig body and detachably fixed to the support member; and the other end of the jig body And a holding means which is provided on a side and is capable of detachably holding the tip of the high-pressure live wire.

  In the first aspect, the high voltage live wire can be supported by the support member in an insulated state by the high voltage live wire support jig, and the high voltage cutout can be replaced safely and easily by preventing a ground fault or an electric shock. In addition, the replacement work can be simplified and the work time can be shortened. Moreover, the armor to a high voltage | pressure live wire becomes unnecessary and can prevent the fall of a high voltage | pressure cutout by a load, a ground fault, and an electric shock.

  According to a second aspect of the present invention, in the first aspect, the support member is an arm member that holds a high-pressure cutout to which the high-voltage live wire is connected, and the engagement means is attached to and detached from the arm member. A high-pressure live wire support jig characterized by being freely fixed.

  In the second aspect, the arm member can support the high-pressure live wire by the high-pressure live wire support jig, and the safety can be improved and the work can be efficiently performed.

  According to a third aspect of the present invention, in the first or second aspect, the jig main body is provided so as to be extendable in the axial direction between the fixing means and the holding means. It is in the live wire support jig.

  In the third aspect, by making the high-voltage live wire support jig extendable and retractable, the holding means can be arranged close to the high-voltage live wire to be supported, and safety can be further improved and work efficiency can be improved. This can be further improved.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the jig main body can be bent with respect to an axis.

  In the fourth aspect, by rotating the high-pressure live wire support jig, it is possible to avoid other high-pressure cut-outs and high-pressure live wires other than the high-pressure cut-out to be replaced, and further improve safety and work efficiency. Can be improved.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the fixing means includes a pair of fixing sandwiching portions that sandwich the support member, and the fixing sandwiching portion includes the support member. The high-pressure live wire support jig is characterized by comprising a fixing urging means for urging in a pinching direction.

  In the fifth aspect, the high-pressure live wire support jig can be easily and detachably fixed to the support member by the urging force of the fixing urging means, and safety can be improved and work efficiency can be improved. .

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the holding means includes a pair of holding pinching portions that sandwich the high-voltage live wire, and the holding pinching portion includes the high-pressure active portion. A high-pressure live wire support jig comprising a holding biasing means that biases the wire in the direction of pinching the wire.

  In the sixth aspect, the high-pressure live wire can be easily detachably held by the holding means by the urging force of the holding urging means, and safety and work efficiency can be improved.

  According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the jig main body is provided with an insulating terminal cap fitted to a tip of the high-voltage live wire via a string member. And the holding means holds the terminal cap.

  In the seventh aspect, by providing the terminal cap on the jig body via the string member, it is not necessary to search for the terminal cap or hold it in advance with a hand, thereby improving work efficiency and increasing safety. Can do.

  According to an eighth aspect of the present invention, in any one of the first to sixth aspects, the holding means is provided with an insulating terminal cap that is fitted to a tip of the high-pressure live wire. It is in a high-pressure live wire support jig.

  In the eighth aspect, it is not necessary to search for a terminal cap or hold it in advance with a hand, so that work efficiency can be improved and safety can be increased.

  According to a ninth aspect of the present invention, in the eighth aspect, the high-pressure live wire is characterized in that the terminal cap is held in a state of being fitted to the tip of the high-pressure live wire by the holding force of the holding means. It is in the support jig.

  In the ninth aspect, by fitting the terminal cap to the tip of the high-voltage live wire by the holding force of the holding means, it is possible to improve work efficiency and enhance safety.

  According to the present invention, when replacing a high pressure cutout, the high voltage live wire charged by the high voltage live wire support jig can be safely and reliably supported, and the efficiency of the replacement work of the high pressure cutout is improved. Thus, the work time can be shortened.

  Hereinafter, the present invention will be described in detail based on embodiments.

(Embodiment 1)
FIG. 1 is a plan view of a high-pressure live wire support jig according to Embodiment 1 of the present invention. As shown in FIG. 1, the high-pressure live wire support jig 10 of the present embodiment is a support member that supports a high-pressure live wire attached to a power pole on one end side of a jig body 20 having a quadrangular prism shape. The fixing means 30 which can be fixed, the holding means 40 which can hold | maintain the front-end | tip part of a high voltage | pressure hot wire in the other end part, and the terminal cap 50 provided in the jig | tool main body 20 via the string member 11 are comprised.

  The jig body 20 includes a base portion 21 having a quadrangular shape, and an extendable portion 22 and a rotating portion 23 provided on both sides thereof. The expansion / contraction part 22 is inserted into one end of the base part 21, and the jig body 20 can be extended and contracted by adjusting the insertion position of the expansion / contraction part 22 into the base part 21. The base portion 21 and the expansion / contraction portion 22 are formed by inserting expansion / contraction engagement pins 25 into arbitrary positions of a plurality of expansion / contraction through holes 24 provided through the base portion 21 and the expansion / contraction portion 22. The movement in the expansion / contraction direction of 20 is regulated.

  Moreover, the rotation part 23 is rotatably hold | maintained at the edge part on the opposite side to the expansion-contraction part 22 of the base 21. As shown in FIG. The rotating part 23 rotates the rotating part 23 relative to the base 21 by inserting rotating engaging pins 27 into arbitrary positions of the plurality of rotating through holes 26 provided through the base part 21 and the rotating part 23. Directional movement is restricted.

  That is, the jig body 20 is provided so as to be extendable and contractable in the axial direction by the base portion 21 and the extendable portion 22, and bendable by the base portion 21 and the rotating portion 23.

  The fixing means 30 includes a pair of fixing clamping portions 31 and 32 capable of clamping a support member that supports a high-pressure live wire. One fixing pin 31 is formed by extending an end of the telescopic portion 22 opposite to the base 21, and the other fixing pin 32 is inclined to the one fixing pin 31. It is held freely. The pair of fixing clamping portions 31 and 32 of the fixing means 30 have a curved shape so that the tips come into contact with each other, and an elliptical space 33 is provided at the center. In addition, the other fixing pinching portion 32 that is tiltably held by one fixing pinching portion 31 is biased in a direction in which the tip is closed by a fixing biasing means such as a spring (not shown), By moving the proximal end side of the portion 32 toward the jig body 20 against the biasing force, the distal ends of the pair of fixing clamping portions 31 and 32 are separated from each other. In such a state, an arm member that holds a high-pressure cutout, which will be described later in detail, is held in the space 33 between the pair of fixing clamping portions 31 and 32 by the urging force of the fixing urging means, so The line support jig 10 is fixed to the arm member. As described above, the fixing means 30 is fixed to the arm member by holding the arm member between the pair of holding sandwiching portions 31 and 32 by an urging force. Can be easily attached to and detached from the arm member.

  The holding means 40 includes a pair of holding nipping parts 41 and 42 that hold the tip of the high-pressure live wire. One holding clamping portion 41 is formed by extending an end of the rotating portion 23 opposite to the base 21, and the other holding clamping portion 42 is inclined to the one holding clamping portion 41. It is held freely.

  Grooves 41a and 42a having a V-shaped cross section are provided on the opposing surfaces on the front end side of the holding sandwiching parts 41 and 42, and a space 43 having a rectangular cross section is formed by the pair of grooves 41a and 42a. It is defined. Further, the holding pinching portions 41 and 42 are urged in a closing direction by a holding urging means such as a spring (not shown), and the other holding pin provided in a tiltable manner in one holding pinching portion 41. By moving the proximal end side of the clamping part 42 toward the jig body 20 against the biasing force, the leading ends of the holding clamping parts 41 and 42 are separated from each other. In such a state, the high-pressure live wire support jig 10 is made to have a high pressure by holding the tip portion of the high-pressure live wire by the urging force of the holding urging means in the space 43 between the pair of holding nip portions 41 and 42. The tip of the live wire can be detachably held.

  In addition, in this embodiment, although mentioned later in detail, since the terminal cap 50 is fitted to the front-end | tip part of a high voltage | pressure live wire, the terminal cap 50 is hold | maintained in the space 43 between the holding parts 41 and 42 for holding | maintenance. Thus, the tip of the high-pressure live wire is held.

  The terminal cap 50 is fixed to the proximal end portion side of the holding sandwiching portion 42 by the string member 11. Such a terminal cap 50 has a cylindrical shape in which one end side is closed, and its cross section is formed in an elliptical shape. The terminal cap 50 is formed of an insulating and elastically deformable material such as a resin. Moreover, the terminal cap 50 has an inner surface having an elliptical cross section, and the inner diameter of the terminal cap 50 is smaller than the outer diameter of the tip of the high-pressure live wire.

  Such a terminal cap 50 is elastically deformed by pressing the outer peripheral surface, and the cross section of the inner surface is made a perfect circle. In this state, the distal end portion of the high-voltage live wire is inserted into the terminal cap 50, and the terminal cap 50 returns to an elliptical shape by releasing the pressing of the outer peripheral surface of the terminal cap 50. Will fit. That is, the terminal cap 50 is held in a state of being fitted to the tip of the high-pressure live wire by being elastically deformed. In addition, after the terminal cap 50 is fitted to the tip of the high-voltage live wire, it is possible to prevent the terminal cap 50 from being detached from the high-pressure live wire by bending the end portion side where the terminal cap 50 is blocked. .

  Further, in the present embodiment, the holding means 40 holds the distal end portion of the high-voltage live wire in which such a terminal cap 50 is fitted. At this time, the pair of holding clamping portions 41 and 42 of the holding means 40 is used. However, it is possible to further prevent the terminal cap 50 from coming off the high-pressure live wire by sandwiching the minor axis direction of the terminal cap 50 in the space 43 between the groove portions 41a and 42a.

  The high-voltage live wire support jig 10 is formed of an insulating material such as resin, for example. And, with such a high-pressure live wire support jig 10, the high-pressure live wire removed from the high-pressure cut-out is supported by a support member such as an arm member, so that the work of mounting the armor on the high-pressure live wire becomes unnecessary. An insulating sheet attached to the support member or the like is not necessary, and the work on the utility pole with a limited work space can be performed safely and efficiently.

  Here, the electric pole in which such a high voltage hot wire support jig | tool 10 is used is demonstrated. 2 and 3 are plan views showing a schematic configuration of the utility pole. As shown in FIG. 2, a high voltage arm 101 extending in the horizontal direction is provided above the utility pole 100, and a plurality of insulators 102 are arranged in parallel on the high voltage arm 101. The tension insulator 102 supports a transmission / distribution line (not shown), and a first lead wire 200 extends from the transmission / distribution line. Further, an insulator 103 on which the first lead wire 200 is supported is fixed to the tip of the high-pressure arm 101.

  As shown in FIGS. 2 and 3, a transformer 104 is supported by a transformer support band 105 below the high-voltage arm 101 of the utility pole 100. A support arm 106 extending in the horizontal direction is provided below the transformer 104, and an insulator 107 is provided at the tip thereof. Further, a high-pressure cutout arm 109 in which a plurality of high-pressure cutouts 108 are arranged in parallel is provided on the distal end side of the support arm 106. The high pressure cutout arm 109 extends in a direction perpendicular to the support arm 106 and in the horizontal direction. The first lead wire 200 extended from the transmission / distribution line supported by the insulator 102 is supported by the insulators 103 and 107 and electrically connected to the high-voltage cutout 108. In addition, the second lead wire 201 is electrically connected to the high-voltage cutout 108, and the second lead wire 201 is electrically connected to the transformer 104.

  In such a power pole 100, the replacement of the high-voltage cutout 108 is performed by opening all the high-voltage cutouts 108 and removing the first and second lead wires 200 and 201 from the high-voltage cutout 108 to be replaced. . At this time, the first lead wire 200 extended from the transmission / distribution line is a charged high-voltage live line. The removed first lead wire 200 (high-voltage live wire) may touch the support arm 106, the high-voltage cutout arm 109, etc., and may cause an accident that may cause an electric shock to the operator. There is.

  Therefore, when the high-voltage cutout 108 of the utility pole 100 is replaced, the first lead wire 200 is supported on the support arm 106 using the high-voltage live wire support jig 10 of the present invention. Specifically, all the high-pressure cutouts 108 are opened, and the fixing means 30 of the high-pressure live wire support jig 10 is fixed to the support arm 106. Next, the high-voltage live wire support jig 10 is expanded and contracted so that the holding means 40 is in the same position as the position of the high-pressure cutout 108 to be replaced. At this time, if the other high-voltage cutout 108 or the other first lead wire 200 is in the way, the high-pressure live wire support jig 10 is bent. This makes it easier to hold the first lead wire 200 connected to the high-voltage cutout 108 to be replaced on the high-voltage live wire support jig 10 to improve work efficiency, and to prevent accidents such as ground faults and electric shocks. Can be prevented.

  And after removing the 2nd lead wire 201 from the high voltage | pressure cutout 108, the 1st lead wire 200 is removed. The terminal cap 50 is fitted to the distal end of the first lead wire 200 thus removed, and the distal end portion of the first lead wire 200 is held by the holding means 40 of the high-voltage live wire support jig 10 via the terminal cap 50. By holding it, the first lead wire 200 can be supported in an insulated state.

  By replacing the high-voltage cutout 108 in such a state, the first lead wire 200 does not come into contact with the support arm 106 or the like to cause a ground fault, preventing the operator from getting an electric shock and improving safety. be able to. In addition, since the first lead wire 200, which is a high-voltage live wire, is supported by the high-voltage live wire support jig 10, the work on the power pole with a limited work space can be performed safely and efficiently, and the work time Can be shortened. Moreover, since it is not necessary to attach an armor to the 1st lead wire 200, a load is not applied to the 1st lead wire 200, and accidents, such as a fall of a high voltage cutout, a ground fault, and an electric shock, can be prevented. .

(Embodiment 2)
FIG. 4 is a plan view of the main part of the high-pressure live wire support jig according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the structure similar to embodiment mentioned above, and the overlapping description is abbreviate | omitted. As shown in FIG. 4, the fixing means 30 </ b> A of the high-voltage live wire support jig 10 </ b> A according to the present embodiment includes a fixing clamping part 31 </ b> A in which the expansion / contraction part 22 of the jig body 20 is extended, and the fixing clamping part 31 </ b> A. It is comprised with the clamping part 32A for fixation hold | maintained so that inclination is possible. The pair of fixing clamping portions 31 </ b> A and 32 </ b> A is formed such that a space 33 </ b> A defined therebetween is in close contact with the support arm 106 described above. Specifically, since the above-described support arm 106 has a rectangular cross section, one of the fixing clamping portions 31 to which the stretchable portion 22 is extended is bent so that the space 33A has a rectangular shape. The other fixing clamping portion 32A is formed in a straight line. The fixing means 30A is provided with fixing urging means for urging the front end of the fixing holding part 32A toward the fixing holding part 31A, as in the above-described embodiment.

  Such a fixing means 30 </ b> A is fixed in such a manner that the bent inner surface of one fixing clamping portion 31 </ b> A abuts on the outer surface of the support arm 106. Then, the high-voltage live wire support jig 10A fixed in this manner has a rotating direction around the axis of the support arm 106 because the bent inner surface of the fixing clamping portion 31A contacts the inner surface of the support arm 106. Movement is reliably regulated. Thereby, it can prevent reliably that accidents, such as a ground fault and an electric shock, generate | occur | produce when 10 A of high voltage | pressure live wire support jigs rotate.

(Embodiment 3)
FIG. 5 is a perspective view of a main part of a high-pressure live wire support jig according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the member similar to embodiment mentioned above, and the overlapping description is abbreviate | omitted. As shown in FIG. 5, the holding means 40 </ b> A of the high-voltage live wire support jig 10 </ b> B of the present embodiment has a terminal cap 50 </ b> A fixed to a holding pinching part 41 </ b> A in which the rotating part 23 of the jig body 20 is extended. Yes. The other holding clamping portion 42A is not formed with a groove, and the terminal cap 50A is pressed by the inner surface on the one holding clamping portion 41A side. Note that the holding means 40A is provided with holding biasing means for biasing the tip of the holding clamp part 42A toward the holding clamp part 41A, as in the above-described embodiment.

  In order to hold the high-pressure live wire in the high-pressure live wire support jig 10B having such a holding means 40A, the tip end portion of the high-pressure live wire is terminated with the tips of the pair of holding sandwiching portions 41A and 42A separated from each other. The terminal cap 50A is pressed between the pair of holding clamping portions 41A and 42A by the biasing force of the holding biasing means simply by inserting into the cap 50A and releasing the holding clamping portion 42A, thereby holding the high-pressure live line. be able to.

  Such a holding means 40A can also be applied to the high-pressure live wire support jigs 10 and 10B of the first and second embodiments described above.

(Embodiment 4)
FIG. 6 is a perspective view of a main part of a high-pressure live wire support jig according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the member similar to embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 6, the holding means 40B of the high-voltage live wire support jig 10C according to the present embodiment is held in a tiltable manner by the holding pinching portion 41A with the rotating portion 23 extended and the holding pinching portion 41A. The holding clamping portion 42B and a holding biasing means (not shown) that biases the leading end of the holding clamping portion 42B toward the holding clamping portion 41A.

  The holding clamping portion 41A with the rotating portion 23 extended has the same shape as that of the third embodiment described above, and the terminal cap 50A is fixed to the surface facing the holding clamping portion 42B.

  When the holding pinching portion 42B is urged toward the holding pinching portion 41A, a pressing portion 44 that abuts on the tip end portion of the terminal cap 50A and bends the tip end side of the terminal cap 50A is provided. . As shown in FIG. 6 (b), the holding means 40B constituted by such a pair of holding pinching parts 41A and 42B is configured such that the holding pinching part 42B becomes a terminal by closing the holding pinching parts 41A and 42B. The cap 50A is pressed to hold the high-pressure live wire in the terminal cap 50A, and the high-pressure live wire is hardly detached from the terminal cap 50A by bending the tip portion of the terminal cap 50A together with the high-pressure live wire by the pressing portion 44. ing.

  Such a holding means 40B can also be applied to the high-pressure live wire support jigs 10 and 10B of the first to third embodiments described above.

(Other embodiments)
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, in Embodiments 1 to 4 described above, the high-voltage live wire support jigs 10 to 10C are used for replacing the high-voltage cutout of the utility pole, but the invention is not particularly limited thereto. The wire support jigs 10 to 10C may be used when replacing the high-pressure cutout provided in the transmission line tower.

  The present invention can be used in industrial fields such as maintenance work for replacing a high-pressure cut-out to which a high-voltage live wire is connected.

It is a top view of the high voltage | pressure hot wire support jig which concerns on Embodiment 1 of this invention. It is a top view which shows schematic structure of the utility pole which concerns on Embodiment 1 of this invention. It is a top view which shows schematic structure of the utility pole which concerns on Embodiment 1 of this invention. It is a principal part top view of the high voltage | pressure hot wire support jig which concerns on Embodiment 2 of this invention. It is a principal part perspective view of the high voltage | pressure hot wire support jig which concerns on Embodiment 3 of this invention. It is a principal part perspective view of the high voltage | pressure hot wire support jig which concerns on Embodiment 4 of this invention.

Explanation of symbols

10, 10A, 10B, 10C High voltage hot wire support jig 20 Jig body 30, 30A Fixing means 40, 40A, 40B Holding means 50, 50A Terminal cap 100 Utility pole 106 Support arm 108 High pressure cutout 200 First lead wire 201 Second lead wire

Claims (9)

A high-voltage live wire support jig for supporting the high-voltage live wire in an insulated state in a state of being fixed to a support member supporting a high-voltage live wire that is a charged high-voltage electric wire,
A jig body formed of an insulating material; a fixing means provided on one end side of the jig body and detachably fixed to the support member; and a high-voltage provided on the other end side of the jig body. A high-pressure hot-wire support jig, comprising: holding means capable of detachably holding the tip of the live wire. 2. The support member according to claim 1, wherein the support member is an arm member that holds a high-pressure cutout to which the high-voltage live wire is connected, and the engagement means is detachably fixed to the arm member. High-pressure live wire support jig. 3. The high-pressure live wire support jig according to claim 1, wherein the jig body is provided so as to be extendable and contractable in the axial direction between the fixing means and the holding means. The high-pressure hot-wire support jig according to claim 1, wherein the jig body is bendable with respect to an axis. 5. The fixing device according to claim 1, wherein the fixing means urges the fixing clamping portion in a direction of clamping the supporting member. A high-pressure live wire support jig characterized by comprising an urging means. 6. The holding means according to claim 1, wherein the holding means biases the holding high-voltage wire in a direction of holding the high-voltage live wire, and a pair of holding clamping portions that hold the high-voltage live wire. A high-pressure hot-wire support jig comprising a holding biasing means. In any one of Claims 1-6, while the said jig | tool main body is provided with the terminal cap which has the insulation fitted to the front-end | tip of the said high voltage | pressure hot wire via the string member, the said holding means is the said A high-pressure hot wire support jig characterized by holding a terminal cap. 7. The high-pressure live wire support jig according to claim 1, wherein an end cap having an insulating property that is fitted to a tip of the high-voltage live wire is fixed to the holding unit. 9. The high-pressure live wire support jig according to claim 8, wherein the terminal cap is held in a state of being fitted to a tip portion of the high-pressure live wire by a holding force of the holding means.

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