JP6654510B2 - High voltage distribution line connector - Google Patents

Description

  The present invention relates to a high-voltage distribution line connector used to connect an overhead high-voltage distribution line that supplies high-voltage power, and particularly to a high-voltage distribution line connector suitable for connecting conductors by removing an insulating coating material on the surface of the electric wire. It relates to a distribution line connector.

  Conventionally, in railways, when an overhead high-voltage distribution line is cut due to a fallen tree or a flying object coming into contact with a strong wind, the covering material on one end of the electric wire is stripped off with a knife for electric work, and the conductor part made of copper wire is used. After the wire is exposed, it is connected to one end of the breaking wire with a metal fitting called a power storage connector, pulled up with a rope, etc., temporarily loosened with a shimmer, and the covering material on the other wire end surface that has been disconnected , And a temporary restoration work is performed in which the other end of the breaking line is connected with a power storage connector.

  However, the energy storage connector is originally used for connecting copper wires at a place where tension is not applied, and the tensile strength is not guaranteed. In addition, since the high-voltage distribution line has a structure in which a relatively hard insulating covering material (hereinafter, simply referred to as a covering material) is attached around a conductor, connection restoration work using a power storage connector requires preparation work for connection. Therefore, the conductors cannot be connected to each other unless the coating material is scraped off. For this reason, the coating material has been conventionally stripped off using a knife for electric work, but handling is difficult and there is a problem in safety.

  On the other hand, as an invention relating to a device for removing a covering material on the surface of an electric wire and connecting the conductor to an internal conductor, there is an invention disclosed in Patent Document 1, for example. The instrument (contact electrode of the connection clamp) according to the present invention is provided with a cylindrical member (contact electrode) having a plurality of cutting blades radially provided on an end face, rotatably mounted on a tip of a fitting called a connection clamp, By rotating the contact electrode while holding the electric wire with a clamp, the covering material on the surface of the electric wire is cut by the cutting blade to expose the conductor.

JP-A-2002-281630

  However, the device of the invention disclosed in Patent Literature 1 is developed mainly for connecting branch lines. In this case, the broken distribution lines are connected to each other through a cut-in line, and high tension is applied. Not suitable for Further, in the appliance according to the invention of Patent Document 1, when the covering material on the surface of the electric wire is hard, it is necessary to rotate a cylindrical member (contact electrode) having a cutting blade using an electric motor. In addition, the handling of tools is troublesome, and skill is required to avoid uncut or excessive cutting. Furthermore, since the contact with the conductor is only at the end face of the cylindrical member (contact electrode) and a part of the outer periphery of the conductor, there is a problem that the contact resistance cannot be sufficiently reduced.

The present invention has been made by paying attention to the above-described problem, and it is possible for anyone to easily remove the covering material at the end of the disconnected high-voltage distribution line and connect the conductors without skill. It is an object of the present invention to provide a high-voltage distribution line connector capable of creating an electrical conduction state.
Another object of the present invention is to provide a high-voltage distribution line connector capable of continuing connection between conductor portions of a high-voltage distribution line in a tensioned state.

To achieve the above object, the present invention provides:
A pair of jointable / separable holders for gripping an electric wire having an insulating coating formed around a linear conductor, and removing the coating of the electric wire gripped by the pair of holders A high-pressure distribution line connector comprising: a stripping metal having a cutting blade; and
The pair of holders are formed of a conductive material,
A pair of wire guide grooves with which the wires can be engaged,
A stripping metal guide groove provided between the pair of wire guiding grooves so as to be substantially parallel to the wire guiding groove and capable of inserting the stripping metal;
Coupling means for coupling the pair of holders,
The peeling metal fitting is formed of a conductive material, and the cutting blade can abut on a part of an outer peripheral surface of the electric wire, the tip of which is engaged with the wire guide groove. It is formed to incline in the direction away from
The peeling metal fitting is moved in a direction in which the tip of the cutting blade advances, thereby cutting off the covering portion of the electric wire.

  According to the above-described means, after the electric wires are engaged with the electric wire guide grooves of the pair of holders, the peeling metal fitting having the cutting blade is inserted into the peeling metal guide groove, and the metal fitting is formed using a tool such as a hammer. When it is moved, a part of the covering portion of the electric wire is peeled off by the cutting blade, and at the same time, an electrically conductive state is created by the peeling metal fitting and the holder made of the conductive material. Anyone can easily perform the removal work and the connection work between the conductor parts without requiring skill. In addition, the cutting blade of the peeling metal comes into contact with the surface of the conductor portion from which a part of the covering portion has been peeled over a wide range in the axial direction, and the peeling metal tool inserted into the skin-forming metal guide groove has a holder. Since the contact area between the wire and the holder is large, the electrical contact resistance between the electric wire and the holder can be sufficiently reduced.

Preferably, the pair of holders are formed with two metal fitting guide grooves into which the peel metal fittings can be inserted, and the two peeling metal fittings can be inserted into the two metal fitting guide grooves respectively. It is provided that the coating portion of the electric wire engaged with each of the electric wire guide grooves can be cut by moving the respective peeling metal fittings in the direction in which the tip of the cutting blade advances.
Accordingly, the work can be performed with a smaller force as compared with the case where the covering portions of the two electric wires are simultaneously cut by one metal fitting, and the working efficiency is improved.

Preferably, a tip is formed in a wedge shape, and a pair of retaining members movable in a direction intersecting with the pair of wire guide grooves are provided.
With this configuration, it is possible to prevent the wires from coming off from the wire guide grooves when tension is applied to the two wires connected after the connection operation.
Here, for example, a long hole is formed along the movable direction in the pair of retaining members, and a pin that engages with the long hole is provided in the pair of holders to separate or separate the pair of holders. It is preferable to provide a structure for preventing the retaining member from dropping off the holder when opened.

Preferably, at least one end of the pair of electric wire guide grooves has a curved portion that can guide the engaged electric wire in a direction away from the peeling metal guide groove.
Thereby, when tension is applied to the two wires connected after the connection work is completed, the two wires are each bent by 90 degrees to increase the frictional force, thereby preventing the wires from coming off. it can.

  ADVANTAGE OF THE INVENTION According to this invention, anyone can easily remove | eliminate the covering material of the broken high-voltage power distribution line end and the connection operation | work of conductor parts, without requiring skill, and can produce an electric conduction state. In addition, it is possible to continue the connection of the conductors of the high-voltage distribution line in a state where there is tension.

It is a top view showing one embodiment of a high voltage distribution line connector concerning the present invention. It is a side view of the high voltage distribution line connector of the embodiment of FIG. It is a figure which shows the structure inside the upper holder and the lower holder which comprise the high voltage distribution line connector of embodiment of FIG. FIG. 2 is a perspective view of a cutter and a conductive fitting (skin peeling fixture) constituting the high-voltage distribution line connector of the embodiment of FIG. 1. FIG. 5 is a perspective view showing a surface on the opposite side of the cutter and conductive metal fitting of FIG. 4. (A), (B), (C) is a perspective view, a cross-sectional view, and a side view showing the details of the holding wedge. FIG. 2 is a front view showing a state in which an end of a high-voltage distribution line and an end of a break line are engaged with the high-voltage distribution line connector of FIG. 1 and a cutter and a conductive metal fitting are partially inserted. FIG. 7A shows a state in which the cutter and conductive metal fitting has been pushed in from the state of FIG. 7, wherein FIG. 7A is a front view, and FIG. It is a figure which shows the state which connected the edge part of the high voltage distribution line and the edge part of the interruption | blocking wire with the high voltage distribution line connector of embodiment of FIG. 1, and gave tension. 1. It is a front view which shows the other usage example of the high voltage distribution line connector of embodiment of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are a front view and a side view showing an assembled state of a high voltage distribution line connector 10 according to an embodiment of the present invention, and FIG. 3 is a view showing a state where a main body 11 is opened.
As shown in FIGS. 1 to 3, the high-voltage distribution line connector 10 of the present embodiment has a space formed by an upper holder 11 </ b> A and a lower holder 11 </ b> B constituting the main body 11, and the upper holder 11 </ b> A and the lower holder 11 </ b> B. A pair of bar-shaped cutter and conductive metal fittings 12A and 12B having cutting blades inserted into the main body 11, a pair of holding wedges 13A and 13B inserted on both sides of the main body 11, and a state where the upper holder 11A and the lower holder 11B are joined. And six hexagon socket head bolts 14 to be connected with each other. The upper holder 11A, the lower holder 11B, and the cutter / conductive metal fittings 12A, 12B are made of a metal such as copper or copper alloy, which is the same material as the conductive wire of the high-voltage distribution line with good conductivity.

  The upper holder 11A and the lower holder 11B have, on opposing inner surfaces, a pair of straight cutter guide grooves 15a and 15b for guiding the cutter / conductive metal fittings 12A and 12B, and a pair of curved wire guide grooves for guiding the high-voltage distribution line. 16a and 16b are formed so as to be substantially parallel to each other. The side walls at both ends of the electric wire guide grooves 16a and 16b are curved so as to turn substantially 90 degrees to the side of the main body 11 respectively. Further, the wire guide grooves 16a, 16b are formed outside the cutter guide grooves 15a, 15b, and are configured such that a part of the cutter guide grooves 15a, 15b communicates with a part of the wire guide grooves 16a, 16b. Have been.

  The upper holder 11A has six bolt insertion holes 17a through which the coupling bolts 14 can be inserted, and the lower holder 11B has six female holes into which male threads of the coupling bolts 14 can be screwed. A screw portion 17b is formed. At the entrance side of the bolt insertion hole 17a, a large-diameter hole is provided in which the head of the coupling bolt 14 is inserted. The coupling bolt 14 is screwed into the female screw portion 17b, and the upper holder 11A and the lower holder In a state where 11B is coupled, the head of the coupling bolt 14 does not protrude from the surface of the upper holder 11A.

  A pair of wedge storage grooves 18a and 18b for storing and guiding the holding wedges 13A and 13B are formed on the inner side surfaces of the upper holder 11A and the lower holder 11B. The retaining pins 19A, which are engaged with the elongated holes 13a, 13b formed in the holding wedges 13A, 13B to prevent these components from dropping out of the holders 11A, 11B when the main body 11 is disassembled. 19B is planted. The holding wedges 13A and 13B are formed such that the inner front ends form an acute angle, the rear ends are formed to have a length protruding from the holders 11A and 11B, and the rear ends form a flat surface. Is formed.

FIGS. 4 and 5 are perspective views showing details of the cutter / conductive metal fittings 12A and 12B constituting the high-voltage distribution line connector 10 according to the present embodiment, and show different views from different sides. Hereinafter, the surface mainly seen in FIG. 4 will be described as the front surface, and the surface mainly seen in FIG. 5 will be described as the back surface.
As shown in FIGS. 4 and 5, the cutter and conductive fittings 12A and 12B are provided with grooves 21a and 21b having a substantially semicircular cross section along the longitudinal direction on the front and rear surfaces, respectively. Among these, the groove 21a on the front side is substantially at the center, and one (right side in FIG. 4) has a large inner diameter corresponding to the outer diameter of the covering portion made of insulating material of the high-voltage distribution line to be worked, and the other. (Left in FIG. 4) is formed so that the inner diameter becomes smaller corresponding to the outer diameter of the conductor of the high-voltage distribution line.

In addition, an opening 22 communicating the front groove 21a and the rear groove 21b is provided substantially at the center of the cutter / conductive metal fittings 12A and 12B, and a cutting edge is formed at the center edge of the opening 22. 23 are provided. The cutting blade 23 is formed at the bottom of the groove 21a having a substantially semicircular cross section, and has a semicircular or semielliptical shape when viewed from above (see FIG. 2).
As shown in FIGS. 1 and 2, the cutter and conductive metal fittings 12A and 12B are placed in the cutter guide grooves 15A and 15B of the holders 11A and 11B in a back-to-back state with the front side facing outward and the rear side facing inside. To be movable.

FIGS. 6A, 6B, and 6C are a perspective view, a cross-sectional view, and a side view showing details of holding wedges 13A and 13B as retaining members for electric wires.
As shown in FIG. 6, the holding wedges 13A, 13B are formed so that the tips thereof form an acute angle, and the retaining pins 19A, 19B provided in the wedge accommodating grooves 18A, 18B of the holders 11A, 11B. The slots 13a and 13b are formed to engage with the holes. As shown in FIG. 6C, the holding wedges 13A and 13B are formed so that the tips have an inclination. Since the conductor portion of the high-voltage distribution line to be worked has a plurality of (for example, seven) copper wires bundled in a twisted state, the holding wedge 13A has an angle corresponding to the twist angle of the copper wire. , 13B are set at the tip of the ridge. As a result, when the holding wedges 13A and 13B are pushed inward by hitting them with a hammer or the like, as shown in FIG. 8 (B), the tips cut into the grooves formed by the copper wires of the high voltage distribution line, thereby providing high voltage distribution. The movement of the electric wire in the axial direction, that is, the detachment from the inside of the main body 11 is prevented.

Next, a method of using and a function of the high-voltage distribution line connector 10 according to the present embodiment will be described with reference to FIGS. 7 and 8.
Hereinafter, as an example, a case will be described in which the high-voltage distribution line connector 10 according to the present embodiment is used to connect the end of the break line to the cut-side end of the disconnected high-voltage distribution line.
First, as shown in FIG. 3, in a state where the holders 11A and 11B are separated and the holding wedges 13A and 13B are moved outward, the broken high-voltage distribution line is inserted into the wire guide grooves 16A and 16B of one of the holders 11A. The cutting-side end of the cutting wire 31 and the end of the cutting wire 32 are each fitted about half. Also, the cutter and conductive fittings 12A and 12B are inserted into the cutter guide grooves 15A and 15B of the holder 11A. At this time, as shown in FIG. 7, the cutting blades 23 of the cutter / conductive metal fittings 12 </ b> A and 12 </ b> B come into contact with the outer peripheries of the covering portions of the high-voltage distribution line 31 and the breaker wire 32.

  Subsequently, the holder 11B is put on and joined to the holder 11A, and the connecting bolts 14 are inserted into the bolt insertion holes 17 and screwed to the female screw portions to connect the holders 11A and 11B. Note that the cutter and conductive fittings 12A and 12B may be inserted after the holders 11A and 11B are combined. Thereafter, the rear ends of the holding wedges 13A and 13B protruding to the outside of the holders 11A and 11B are hit with a hammer, so that the front ends bite into the covering portions covering the conductors of the high-voltage distribution line 31 and the breaking line 32.

  Next, the tips (upper ends in FIG. 7) of the cutter and conductive fittings 12A and 12B are hit with a hammer to push the cutter and conductive fittings 12A and 12B into the main body 11. Then, the cutting blade 23 cuts obliquely into the covering portions of the high-voltage distribution line 31 and the cutting wire 32 and gradually cuts the covering portions 31a and 32a, as shown in FIG. A state in which a part of the conductor is exposed by entering into the groove 21b on the back surface side of the conductive fittings 12A and 12B, and the cutter and conductive fittings 12A and 12B are in contact with the surface of the conductor. become.

  At this time, since the cutters and conductive fittings 12A and 12B and the holders 11A and 11B constituting the main body 11 are formed of a conductive material, electrical continuity between the high-voltage distribution line 31 and the interruption wire 32 is achieved. When the heads of the cutter and conductive fittings 12A and 12B are inserted to a position where they coincide with the upper surface of the main body 11, proper cutting of the covering portion and sufficient electrical contact between the body and the fittings can be obtained. Since the length of the cutter / conductive metal fittings 12A and 12B and the angle of the cutting blade 23 are set, anyone can easily and reliably perform the work without requiring skill.

As described above, when the connection of the interruption wire 32 to one of the disconnected high-voltage distribution lines 31 is completed, the high-voltage distribution line 31 and the interruption line 32 are pulled up with a rope or the like, and then tension is applied with a shimmer or the like. In this state, the operation of the above-described procedure is performed, and the other end of the interrupted line 32 is connected to the other end of the other high-voltage distribution line by using another high-voltage distribution line connector 10.
FIG. 9 shows a state of the connection portion in a state where the connection is completed. As can be seen from FIG. 9, according to the connection using the high-voltage distribution line connector 10 of the present embodiment, the high-voltage distribution line 31 and the interrupting line 32 are located at positions where the high-voltage distribution line connector 10 is sandwiched. Tension acts in a state of bending 90 degrees.

Therefore, compared to a method in which the high-voltage distribution line 31 and the interrupting wire 32 are connected in a parallel state by using the conventional power storage connector, the high-voltage distribution line 31 and the interrupting line 32 can be connected in a state of withstanding a high tension, that is, in a state with a high tensile strength. There is an advantage of becoming.
In addition, if the above-described working method is performed, when the cutter / conductive metal fittings 12A, 12B are inserted into the main body 11, the cutter / conductive metal fittings 12A, 12B can be hit with a hammer from top to bottom. There is an advantage that work is easy.

In addition, as shown in FIG. 10, the high voltage distribution line connector 10 of the present embodiment inserts the cutter / conductive metal fittings 12A, 12B into the holders 11A, 11B from below and hits them with a hammer to cover the material. It can also be made electrically conductive with the stripping. In this way, by increasing the heads of the cutter and conductive fittings 12A and 12B, when tension is applied to the high-voltage distribution line 31 and the interrupting wire 32, the cutter and conductive fittings 12A and 12B can be used as stoppers. , It is possible to make it difficult for the high-voltage distribution line 31 and the interruption line 32 to come off from the main body 11.
In this way, even when the cutter / conductive metal fittings 12A, 12B are inserted into the holders 11A, 11B from below (the cut end side), the high-voltage distribution line connector 10 is twisted by 180 degrees, so that the cutter / conductive fitting 12 is twisted by 180 degrees. The connection can be performed by hitting the conductive fittings 12A and 12B from above to below with a hammer. However, since it is necessary to maintain the twisted state during the work, it is preferable to insert the cutter and conductive metal fittings 12A and 12B from above from the viewpoint of workability as shown in FIG.

  Although the invention made by the inventor has been specifically described based on the embodiment, the invention is not limited to the embodiment. For example, in the above-described embodiment, the pair of holding wedges 13A and 13B are provided to prevent the high-voltage distribution line from coming off, but the holding wedges 13A and 13B are omitted when it is not necessary to apply a very strong tension. It is also possible. Further, in the above embodiment, the holding wedges 13A and 13B are disposed so as to be oriented in a direction substantially orthogonal to the high-voltage distribution line. The holding wedges 13A and 13B may be arranged at an angle so as to be inclined downward toward the inside.

Further, in a state where the connection is completed by driving the cutter and conductive metal fittings 12A and 12B, a hole for inserting a pin is provided in a portion where the tip of the cutter and conductive metal fitting 12A and 12B protrudes from the main body 11, and the pin is inserted into the hole. A configuration may be adopted in which the fitting can be prevented from coming off by being inserted.
In addition, a plurality of cutter and conductive fittings 12A and 12B having the same outer shape and different sizes (diameters) of the grooves 21a into which the high-voltage distribution lines are inserted are prepared, and high-voltage distribution lines having different diameters are prepared. It is also possible to configure so that only one connector can be used.
Further, in the above-described embodiment, two cutter / conductive metal members are provided. However, the cutter / conductive metal members 12A and 12B may be integrated into a single metal member having two cutting blades. .

In the above-described embodiment, the holders 11A and 11B constituting the main body 11 are configured as separable parts. However, the holders 11A and 11B may be configured to be hinged on one side to be openable and closable. It is possible.
Further, after the bolt 14 for connection is inserted into the bolt insertion hole 17a of the upper holder 11A, a C ring or the like is engaged between the male screw portion of the bolt and the head, and the upper holder 11A and the holder 11B are engaged. May be configured to prevent the bolt 14 from dropping off from the upper holder 11A by its own weight when it is separated or opened. In this case, a recess is formed in the inner surface of the upper holder 11A around the bolt insertion hole 17a so that a C-ring can be engaged, so that a gap is generated between the holders 11A and 11B in the joined state. It is configured to avoid.

Reference Signs List 10 High voltage distribution line connector 11 Main body 11A Upper holder 11B Lower holder 12A, 12B Cutter and conductive metal fitting (peeling metal fitting)
13A, 13B Holding wedge 15A, 15B Cutter guide groove (skin strip guide groove)
16A, 16B Wire guide groove 23 Cutting blade 31 High voltage distribution line 32 Interruption line

Claims (4)

A pair of jointable / separable holders for gripping an electric wire having an insulating coating formed around a linear conductor, and removing the coating of the electric wire gripped by the pair of holders A high-pressure distribution line connector comprising: a stripping metal having a cutting blade; and
The pair of holders are formed of a conductive material,
A pair of wire guide grooves with which the wires can be engaged,
A stripping metal guide groove provided between the pair of wire guiding grooves so as to be substantially parallel to the wire guiding groove and capable of inserting the stripping metal;
Coupling means for coupling the pair of holders,
The peeling metal fitting is formed of a conductive material, and the cutting blade can abut on a part of an outer peripheral surface of the electric wire, the tip of which is engaged with the wire guide groove. It is formed to incline in the direction away from
A high-voltage distribution line connector, wherein the stripping metal is moved in a direction in which the tip of the cutting blade advances, so that the covering portion of the electric wire is peeled off so as to be cuttable. In the pair of holders, two metal fitting guide grooves into which the skin metal fittings can be inserted are formed,
The two stripping metal fittings are provided so as to be insertable into the two metal fitting guiding grooves, respectively, and each of the peeling metal fittings is moved in a direction in which the tip of the cutting blade advances, thereby engaging with each wire guiding groove. The high-voltage distribution line connector according to claim 1, wherein the covering portion of the electric wire is cut so as to be cut.   The high-voltage distribution line connector according to claim 1, further comprising a pair of retaining members, each of which has a wedge-shaped tip and is movable in a direction intersecting the pair of wire guide grooves.   At least one end of the pair of wire guide grooves is formed so as to have a curved portion capable of guiding an engaged wire in a direction away from the peeling metal guide groove. Item 4. The high voltage distribution line connector according to any one of Items 1 to 3.

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