JP5730939B2 - Overhead wire end fitting - Google Patents

Description

  The present invention relates to an overhead wire end connecting device for emergency recovery of a disconnected overhead wire, and more specifically, an overhead wire end provided with a pair of clamp members that grip one end and the other end of the disconnected overhead wire It relates to a part connection instrument.

  An overhead wire such as a high-voltage distribution line installed on a power pole or the like may be disconnected due to a flying object or a fallen tree due to a strong wind or a gust of wind. In order to restore the broken overhead wire, one end of the broken overhead wire and the other end are connected by a straight sleeve. The linear sleeve is a cylindrical body, and a type in which a partition portion is provided at the center in the length direction is also provided.

  In order to restore a broken overhead wire using this straight sleeve, first, insert the core wire at the end of one of the broken wires into one end of the straight sleeve, and at the end of the other broken wire. Insert the core wire into the other end of the straight sleeve. Then, by compressing each end portion of the linear sleeve, the overhead wire of each cut end portion is connected by the linear sleeve.

  However, a compression tool must be used to connect the ends of each overhead line with a straight sleeve. In a general compression tool, since the operation of compressing the end portion of the linear sleeve, for example, 20 times or more must be repeated, the recovery operation takes time. That is, a general compression tool cannot meet the demand for energizing a disconnected overhead wire as soon as possible.

  In addition, as a special compression tool, a hydraulic compression tool that is used by being connected to an aerial work vehicle or the like is provided. However, an aerial work vehicle cannot be dispatched to mountainous slopes, or to sites that are closed due to fallen trees or snow. Therefore, with a hydraulic compression tool, it may not be possible to restore the disconnected overhead line.

  Moreover, a portable electric compression tool is provided as a special compression tool. Since this electric compression tool consumes battery quickly, a spare battery is carried around. However, carrying a spare battery is an extra burden on the operator.

  An erection terminal connection tool that solves such problems is provided (see, for example, Patent Document 1). This erection terminal connection device includes a pair of clamping parts that clamp each end of the disconnected overhead wire, and a conductive member and a frame that are connected to the pair of clamping parts. The conductive member expands and contracts by being folded into a bellows shape. The frame can be expanded and contracted by connecting a plurality of cross links with pins, and the interval between the pair of sandwiching portions is lengthened or shortened.

  Such an erection terminal connection device is in a state in which the conductive member and the frame are extended and the interval between the holding portions is extended before the ends of the overhead wires that are disconnected and dropped are connected. Then, near the ground, each end portion of the overhead wire that is disconnected is connected to each clamping portion. Thereafter, by shortening the stretched state of the frame, the conductive member is folded in a bellows shape and the distance between the pair of sandwiching portions is narrowed.

  By narrowing the distance between the pair of sandwiching portions, the distance between the ends of the disconnected overhead wire is also narrowed, and the suspended overhead wire is pulled upward. In this way, the broken overhead wire is recovered quickly by the erection terminal connection device.

  In order to extend and shorten the frame, this erection terminal connecting device is hung around a transmission gear and a reel provided on one clamping unit side, a pulley provided on the other clamping unit side, a reel and a pulley. And a rope adjustment mechanism that hangs over the wire and transmission gear. By pulling the rope, the transmission gear rotates, the wire is wound around the reel in a spiral shape, and the frame is shortened.

JP 2010-233302 A

  Since the installation terminal connecting device described in Patent Document 1 includes a complicated frame and a rope adjustment mechanism, it becomes large as a whole and is heavy, so it is difficult to carry and is also expensive. Yes. Moreover, since the installation terminal connecting instrument described in Patent Document 1 requires an operation of operating the wire to narrow the distance between the pair of holding portions, it is not suitable for an emergency treatment that is to be restored as soon as possible. Furthermore, since the installation terminal connecting instrument described in Patent Document 1 does not consider the stage of the actual restoration after the emergency restoration, it is difficult to perform the restoration smoothly.

  Accordingly, an object of the present invention is to provide an erection terminal connection device that is reduced in size with a simple mechanism, can quickly recover a disconnected overhead wire in a short time, and can easily perform the actual recovery.

An overhead wire end connecting instrument according to the present invention includes a pair of conductive clamp members disposed apart from each other, and a conductive rod-shaped coupling member spanned between the pair of clamp members, member includes a grip portion which have a pair of clamping pieces for clamping the core wire of the exposed contact wire, a coupling member for coupling the grip portion and the coupling member, the exposed contact wire of the core wire can be inserted tubular and a coupling member, each of the pair of coupling members, coupled to said opposite ends of the connecting member, the pair of gripping portions is characterized Rukoto disposed between the pair of coupling members.

According to this overhead wire end connecting instrument, the gripping portions of the pair of clamp members grip one end and the other end of the broken wire. And since the holding part of each clamp member and the connecting member are united, the end of one overhead wire held by the holding part (a pair of clamping pieces) of one clamp member and the other clamp member are held. The end of the other overhead wire gripped by the portion (a pair of sandwiching pieces) is immediately connected. Since the clamp member and the connecting member are conductive, one overhead wire and the other overhead wire are energized.

  Further, as another aspect of the overhead wire end connecting device according to the present invention, a pair of cover members is further provided, and one cover member covers one half of one side of the one clamp member and the connecting member, and the other cover. The member can cover the other half of the other clamp member and the other one side of the connecting member.

  According to the overhead wire end connecting device, each of the pair of cover members covers one half of each of the clamp members and the connection members so that the clamp members and the connection members are not exposed to rainwater. Can be protected.

  Moreover, as another aspect of the overhead wire end connecting device according to the present invention, the pair of clamp members and the connecting member may be oriented in the same direction. According to this overhead wire end portion connecting instrument, since the direction of the clamp member and the direction of the connecting member are the same, the divided overhead lines gripped by the clamp member are directed and connected in the same direction. For this reason, it is possible to prevent a compromise.

  Moreover, as another aspect of the overhead wire end connecting device according to the present invention, the pair of clamp members may be concentrically facing each other. According to the overhead wire end connecting instrument, it is possible to easily insert each end of the broken wire into each end of the sleeve used when the main restoration is performed later.

  According to the present invention, it is possible to provide an overhead wire terminal connecting device that can be reduced in size with a simple mechanism, can quickly recover a disconnected overhead wire in a short time, and can easily perform the actual restoration.

FIG. 1 is one embodiment of an overhead wire end connecting device according to the present invention, wherein (a) is a plan view and (b) is a front view. FIG. 2 is a front view showing an embodiment of the overhead wire end connecting device according to the present invention, in a state where overhead wires are connected. FIG. 3 is a front view showing an embodiment of the overhead wire end connecting device according to the present invention, in a state where a cover is used.

  One embodiment of an overhead wire end connecting device according to the present invention will be described with reference to FIGS. 1 to 3. This overhead wire end connecting instrument is used to connect the disconnected overhead wire 100 by emergency restoration. In addition, each end part 110 of the cut overhead wire 100 is in a state where the insulating covering 101 is peeled off and the core wire 102 is exposed.

  As shown in FIG. 1, the overhead wire end portion connecting instrument in the present embodiment includes a pair of conductive clamp members 10 that are spaced apart from each other and a conductive link that is spanned between the pair of clamp members 10. Member 20. The clamp member 10 and the connecting member 20 are made of aluminum having high conductivity, but may be made of copper or the like.

  Each clamp member 10 includes a grip portion 11 that grips the core wire 102 exposed at the end of the overhead wire 100 from the side surface. The grip portion 11 includes a pair of sandwiching pieces 11a and 11b (hereinafter referred to as “first sandwiching piece 11a” and “second sandwiching piece 11b”) facing each other so as to have a pair of gaps. The clamp member 10 further includes a coupling member 12 that integrally couples the first and second clamping pieces 11a and 11b, and a fastening member 13 that contacts and separates the first and second clamping pieces 11a and 11b. Yes.

  Each sandwiching piece 11a, 11b has a bowl shape so that the core wire 102 of the overhead wire 100 is fitted therein, and is arranged so that the concave curved surfaces face each other. The inner diameters of the concave curved surfaces of the sandwiching pieces 11a and 11b are the same over the entire length. However, the outer shape of each clamping piece 11a, 11b is tapered. The end portion (hereinafter referred to as “inner end portion”) where the pair of clamp members 10 face each other is expanded in diameter, and the opposite end portion (hereinafter referred to as “outer end portion”) is reduced in diameter. Yes.

  And the coupling member 12 is made into the cylindrical body which formed the slit 12a in the length direction, and has fixed the 1st clamping piece 11a and the 2nd clamping piece 11b on the inner surface. That is, the coupling member 12 and the first and second clamping pieces 11a and 11b are united and integrated. However, the slit 12a is in a state in which one gap between the first sandwiching piece 11a and the second sandwiching piece 11b is opened, and the interval between the first sandwiching piece 11a and the second sandwiching piece 11b can be changed.

  The fastening member 13 is fixed to the inner end portion by the first additional portion 13a fixed to the inner end portion at the convex outer surface of the first holding piece 11a and the concave curved surface of the second holding piece 11b. 2 attachment part 13b, and the volt | bolt 13c spanned between the 1st attachment part 13a and the 2nd attachment part 13b are provided.

  The 1st attachment part 13a is longer than the width | variety of the 1st clamping piece 11a, and has the protrusion end part (not numbered) which protruded from the 1st clamping piece 11a. A through hole through which the bolt 13c is inserted is formed in the thickness direction of the protruding end. And the 2nd attachment part 13b is longer than the width | variety of the 2nd clamping piece 11b similarly to the 1st attachment part 13a, and has the protrusion end part (not numbered) which protruded from the 2nd clamping piece 11b. ing. A portion of the inner surface of the second attachment portion 13b that is continuous with the concave curved surface of the second sandwiching piece 11b is formed into a concave curved surface.

  And the internal thread which fastens the volt | bolt 13c is formed in the thickness direction of the protrusion end part of this 2nd clamping piece 11b. Therefore, by tightening the bolt 13c inserted through the through hole of the first attachment portion 13a, the interval between the concave curved surface of the first clamping piece 11a and the concave curved surface of the second clamping piece 11b is narrowed, and the double concave curved surface is formed. The core wire 102 of the sandwiched overhead wire 100 is firmly sandwiched between the sandwiching pieces 11a and 11b.

  And each 2nd clamping piece 11b of a pair of clamp member 10 arrange | positioned spaced apart is connected by the connection member 20. As shown in FIG. The connecting member 20 is a columnar or prismatic rod, and has an intermediate portion 21 and end portions 22 extending from both sides of the intermediate portion 21. Each end portion 22 has an inclined posture slightly bent with respect to the intermediate portion 21.

  Since the outer shape of each second clamping piece 11b is tapered, each end 22 of the connecting member 20 is inclined to form the first clamping piece 11a and the second clamping piece 11b. The central axis of the cylindrical body (hereinafter referred to as “the central axis of the gripping part 11”) and the intermediate part 21 of the connecting member 20 face in the same direction in parallel. Further, the central axis of one gripping part 11 and the central axis of the other gripping part 11 are concentric.

  The overhead wire end connecting device includes a pair of covers 30. The cover 30 diverts the cover 30 that covers the retention clamp. The cover 30 is widely used as a retention clamp and has a wedge shape when viewed from the front.

  First, second, and third openings 31, 32, and 33 are provided at the corners of the cover 30. The cover 30 provided in this overhead wire end connection instrument uses the first and second openings 31 and 32 and does not use the third opening 33. In addition, this cover 30 is provided with the main-body part (not numbered) folded in half. That is, the cover 30 covers half of the clamp member 10 and the connecting member 20 by closing the main body portion in a folded state from the expanded state.

  Here, a method for emergency recovery of the disconnected overhead line 100 using the overhead line end connecting tool will be described. Since this overhead wire end portion connecting instrument has a basic configuration of a pair of clamp members 10 and a connecting member 20 that connects the pair of clamp members 10, the overhead wire end connection instrument is reduced in weight. Therefore, it is not a heavy burden for the operator to carry the overhead wire end connecting device to the work site.

  The disconnected overhead line 100 is in a power failure state. Therefore, the insulating covering 101 of the cut overhead wire 100 is peeled off, and the core wire 102 is exposed. Then, as shown in FIG. 2, the core wire 102 is inserted from the outer end portion between the first clamping piece 11a and the second clamping piece 11b of each clamp member 10. The distal end portion of the core wire 102 protrudes from the inner end portions of the first sandwiching piece 11a and the second sandwiching piece 11b. Therefore, the tip of one core wire 102 and the tip of the other core wire 102 face each other.

  Then, by tightening the bolt 13c, the interval between the first holding piece 11a and the second holding piece 11b is narrowed, and the first holding piece 11a and the second holding piece 11b firmly hold the core wire 102 of the overhead wire 100. . The opposing surfaces of the first clamping piece 11a and the second clamping piece 11b are curved. Therefore, the first clamping piece 11a and the second clamping piece 11b clamp the core wire 102 of the overhead wire 100 with the surface, and even if a force in the direction of coming off from the clamp member 10 acts on the overhead wire 100, the overhead wire 100 is not connected to the clamping member 10. It is hard to come off from.

  Thereafter, as shown in FIG. 3, each cover 30 covers half of each clamp member 10 and connecting member 20. The overhead wire 100 is led out from the first opening 31 of the cover 30, and the connecting member 20 is led out from the second opening 32 of the cover 30. Since the 1st opening part 31 has an internal diameter comparable as the outer diameter of the overhead wire 100, the 1st opening part 31 and the overhead wire 100 are closely_contact | adhered. However, since there is a gap between the second opening 32 and the connecting member 20, the waterproof tape 34 is wound between the second opening 32 and the connecting member 20. Moreover, since the 3rd opening part 33 is not used, it is block | closed by winding the waterproof tape 34. FIG.

  Therefore, this overhead wire end connecting device is difficult for rainwater to enter the cover 30. The waterproof tape 34 may be wound between the first opening 31 and the overhead wire 100. The cover 30 protects the clamp member 10 and the connecting member 20 from flying objects.

  In this way, the disconnected overhead line 100 is immediately recovered immediately. The combined clamp member 10 and connecting member 20 have conductivity. Therefore, the disconnected overhead wire 100 is energized by being connected to the overhead wire end connection tool.

  Then, based on the power outage plan set up at a later date (for example, one to two months later), that is, when there is time, the broken wire 100 is restored and restored. In this restoration, the emergency restoration overhead line 100 is brought into a power failure state so as not to affect the consumer. And the waterproof tape 34 wound around the cover 30 is peeled off, and the clamp member 10 is exposed by removing the cover 30.

  And the core wire 102 of the overhead wire 100 is pulled out from between the 1st clamping piece 11a and the 2nd clamping piece 11b by loosening the volt | bolt 13c. Then, the core wire 102 of the overhead wire 100 held by one clamp member 10 and the core wire 102 of the overhead wire 100 held by the other clamp member 10 are inserted into a straight sleeve (not shown). Since the core wires 102 of the overhead wire 100 held by the pair of clamp members 10 face each other concentrically and the orientation of the connecting member 20 is parallel to the orientation of the clamp member 10, the overhead wire 100 is creased. Not. Therefore, the core wire 102 of the overhead wire 100 can be easily inserted into each end portion of the linear sleeve.

  Then, both core wires 102 are connected by compressing the linear sleeve. Since power is cut so as not to affect customers, there is no inconvenience even if it takes time to compress the straight sleeve.

  The present invention can be variously modified without being limited to the above embodiment. For example, in the overhead wire end connecting instrument in the above embodiment, the clamp member 10 includes a pair of clamping pieces and the coupling member 12. However, the grip portion 11 may have a cylindrical shape having a slit 12a, and a protruding portion may protrude from the edge where the slit 12a is formed, and the protruding portion may be fastened by a bolt 13c.

  In this case, a through hole through which the bolt 13c is inserted may be formed in one projecting portion, and a female screw may be formed in the other projecting portion. Alternatively, the tightening member 13 may be a clip that sandwiches both protruding portions, or may be configured by a fitting protrusion and a fitting hole.

  Moreover, in the said embodiment, the general purpose cover 30 which covers a retention clamp was diverted as the cover 30. FIG. However, as long as the cover 30 has an opening through which the overhead wire 100 and the connecting member 20 are led out, various general-purpose products can be used. 30 may be manufactured.

  Moreover, in the said embodiment, the external shape of the 1st clamping piece 11a and the 2nd clamping piece 11b was made into the taper shape. However, the outer shape of the first holding piece 11a and the second holding piece may be the same outer diameter over the entire length. In this case, the connecting member 20 does not bend both end portions 22 and is linear over the entire length.

  Moreover, in the said embodiment, the core wire 102 of the overhead wire hold | maintained at the clamp member 10 was made to face because the central axis of the holding part 11 faced concentrically. However, the clamp members 10 do not concentrically face each other depending on the situation of the cut overhead wire 100, that is, one clamp member 10 is connected to one (for example, the upper side or the left side) of the connection member 20, and the other clamp member 10. May be coupled to the other of the coupling members 20 (for example, the lower side or the right side).

  Further, in the above embodiment, the connecting member 20 is made parallel to the direction of the clamp member 10 so that the overhead wire 100 is not folded. However, when the overhead wire 100 may be replaced, such as when the overhead wire 100 is replaced, the direction of the connecting member 20 may not be parallel to the orientation of the clamp member 10.

10 ......... Clamping member 11 ......... Holding part 11a ... First clamping piece 11b ... Second clamping piece 12 ......... Coupling member 12a ... Slit 13 ......... Clamping member 20 ......... Connection member 30 ……… Cover 100 …… Overhead wire 110 …… End

Claims (4)

A pair of electrically conductive clamp members that are spaced apart from each other, and an electrically conductive bar-like connecting member that is stretched over the pair of clamp members,
Wherein each clamp member has a gripping portion which have a pair of clamping pieces for clamping the core wire of the exposed contact wire, a coupling member for coupling the grip portion and the coupling member, the core wire of the overhead line which the exposed can be inserted A cylindrical coupling member,
Wherein each of the pair of coupling members, coupled to said opposite ends of the connecting member, the pair of gripping portions, said pair of coupling is member disposed between the contact wire end connection device according to claim Rukoto. A pair of cover members;
The one cover member covers one half of the one clamp member and the connecting member, and the other cover member covers the other half of the other clamp member and the connecting member. The overhead wire end connector according to 1 . The overhead wire end connecting device according to claim 1 or 2 , wherein the pair of clamp members and the connecting member are oriented in the same direction. The overhead wire end connecting device according to any one of claims 1 to 3 , wherein the pair of clamp members are concentrically opposed to each other.

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