JP5751707B2 - Line tool - Google Patents

Description

  The present invention relates to a wiring tool for laying a new cable through a cable suspending device using, as a guide, an existing cable supported by a suspending wire laid between utility poles, for example.

Conventionally, for example, a leading device for a cable pulling cord described in Patent Document 1 has been proposed as a wiring tool for laying a new cable using the existing cable as a guide with respect to an existing cable installed between utility poles. Has been.
In the leading tool described in Patent Document 1, a self-supporting cable installed between utility poles is integrally connected in a hook shape between a suspension line portion and a cable portion, and spirally spirals around the outer periphery of the self-supporting cable. A hanger is wound. The leading tool provided inside the spiral hanger is provided with a latching piece having a pair of arc-shaped portions that can be opened and closed on a substantially concave main body piece. These latching pieces can be engaged with the cable portion by a pair of arc-shaped portions, and their base portions are connected by a V-shaped leaf spring. Adjustment means for opening and closing the leaf spring by moving the bolt forward and backward is provided, and opening and closing adjustment of the arc-shaped portions of the pair of latching pieces is adjusted to be engageable and slidable with cable portions having different diameters. A cable drawstring is connected to the rear portion of the leading tool via a pressing wire and a wire tool.

  And about a leading tool with which a pair of latching pieces were engaged with the cable part, a main piece is inscribed in a spiral hanger by pressing a wire tool from one utility pole side to the other utility pole side, and a latch piece Is guided by the cable part and moves to the other power pole side. Then, the additional cable is installed between the utility poles by assembling the cable to be added to the end of the drawstring and pulling the tip of the drawstring.

  Further, as a cable erection structure in which cable rings are arranged at predetermined intervals instead of a spiral hanger with respect to a suspension line and an existing cable erected between utility poles, for example, there is the one shown in FIG. In the cable erection structure shown in FIG. 8, the suspension line 3 and the existing cable 4 are separated and installed between the two utility poles 1 and 2. A cable ring 5 is provided at a predetermined interval as means for suspending the existing cable 4 from the suspension line 3.

  The cable ring 5 has wire-like suspensions 6 a and 6 b extending upward from both ends thereof with respect to the base 6, and the upper ends of the suspensions 6 a and 6 b are locked to the suspension line 3. Moreover, one of the suspension tools 6 a and 6 b extends to the front side of the suspension line 3, and the other extends to the rear side of the suspension line 3 and is bent and locked to the suspension line 3. The cable ring 5 is attached to the suspension line 3 at a predetermined interval, and the existing cable 4 is supported from the suspension line 3 so as not to hang down by surrounding the existing cable 4 in a substantially ring shape.

Japanese Patent No. 3404339

  By the way, in the cable erection structure described above, when the additional new cable 8 is newly installed in the cable ring 5, the existing cable 4 abuts against the base 6 of the cable ring 5 and is supported by being suspended. The leading tool described in Document 1 could not be used. For this reason, when installing a new cable, an operator on the gondola 9 of the construction vehicle temporarily removes the suspension tool 6a or 6b of each cable ring 5 from the suspension line 3 and passes the new cable 8 inside the cable ring 5. Since the newly installed cable 8 was laid again by rehanging the hanging tool 6a or 6b, there was a drawback that the construction work was troublesome and complicated, and the erection efficiency was poor.

  In view of such a problem, the present invention provides a wiring tool that allows a new cable to be installed easily and efficiently even if an existing cable is supported by a cable lifting tool with respect to the hanging line. Objective.

The wiring tool according to the present invention is slidably attached to an existing cable supported by a cable hanging tool on a suspension line laid between power poles, and connected to a new cable reel so that the cable runs along the existing cable. A main body in which a new cable reel is connected on the rear end side, an elastically deformable wrap portion that embeds an existing cable at a separated slit portion provided in the main body, and a main body Alternatively, a swingable guide member provided on the lap portion and supported on both sides of the suspension line is provided.
According to the wiring tool according to the present invention, in a state where the existing cable is suspended and supported by the cable hanging tool, the wrap portion of the wiring tool is opened at the slit portion and elastically deformed and wrapped in the existing cable. Even if the existing cable is supported by the cable suspender with respect to the suspending line, the line linking tool can be mounted.
And the wiring tool can be moved along the existing cable by pushing it along the existing cable with the new cable reel attached to the main body. At that time, the guide member provided on the wiring tool Is supported on both sides of the suspension line, so that when the line tool runs along the existing cable, the guide members are arranged on both sides of the suspension line even if the line tool tries to rotate around the existing cable by the wrap part. For this reason, the rotation of the wire passing device can be prevented by any one of the guide members coming into contact with the suspension line. Then, run the reel attached to the main body of the wiring tool, for example, by moving from one power pole installed with a suspension line and existing cable to the other power pole, and then pulling the reel and a new cable following this reel, etc. Can be laid.

Further, the guide member may have an elastic member that can be displaced and elastically restored when it comes into contact with the cable suspension during sliding.
Since the guide members are arranged on both sides of the hanging line when the wiring tool is run along the existing cable, the rotation of the wiring tool is prevented by any one of the guide members coming into contact with the hanging line. In addition, even if the guide member abuts on the cable suspender, the guide member is displaced to the existing cable side, and after overcoming the cable suspender, the guide member returns to the original posture by the elastic force of the elastic member and protrudes on both sides of the suspension line. It is held and guides the travel of the line tool.

Further, two guide members are provided on both sides of the suspension line, the first guide member is longer and more rigid than the second guide member, and the first guide member is the second guide member during traveling. It is preferable that the second guide member comes out of contact with the cable suspension earlier than the first guide member.
When the wiring tool travels along the existing cable, the first guide member contacts and displaces the cable suspension before the second guide member, and the wiring tool is rotated in one direction. After that, the wire guide is guided by the second guide member coming into contact with the cable suspension, and the wire guide is rotated in the reverse direction, but the second guide member having a short length is first suspended by the cable. The second guide member is released from the original angle by the elastic force of the elastic member, and the restriction by the second guide member is released. Thereafter, the first guide member gets over the cable suspension and is released from the restriction.
Therefore, even if the first and second guide members come into contact with the cable hanger that supports the existing cable during traveling, the wiring tool is returned to its original position while swinging with respect to the existing cable. The first and second guide members are guided and run over the cable suspenders and arranged on both sides of the suspension line.

Moreover, the main body may have at least two rods that contact the existing cable.
According to the present invention, the existing cable is supported on the hanging line by the cable suspender, and the wire wrapping tool wraps the existing cable at the wrap portion and can slide, so the wrap portion can rotate with respect to the existing cable. However, since the body is provided with at least two rods that come into contact with and hold the existing cable, these rods come into contact with the peripheral surface of the existing cable to prevent the wire fitting from rotating by the wrap portion. Can travel.

  The wire-line tool according to the present invention includes a main body to which a new cable reel is connected on the rear end side, and an elastically deformable wrap portion that is provided in the main body and embeds an existing cable at a separated slit portion. The wrap portion of the wire passing device can be elastically deformed and pushed out and wound around the existing cable, and the wire passing device can be easily and efficiently attached to the hanging line even if the existing cable is supported by the cable lifting device. . And, since the guide members that can swing on both sides of the suspension line are provided, it is possible to prevent the wire passing tool from rotating and to overcome the guide member by swinging even if it abuts the cable suspension. Can do.

It is a principal part perspective view which shows the state which attached the wiring tool by embodiment of this invention to the existing cable. It is a side view of a line tool. It is a longitudinal cross-sectional view of the direction orthogonal to the longitudinal direction of the existing cable which shows the state which attached the wiring tool to the existing cable in the state which suspended the existing cable on the hanging line with the cable ring. It is a principal part perspective view which shows the guide part provided in the main body of a wiring tool. It is a principal part expansion perspective view which shows the main body of the wiring tool in the state which suspended the existing cable with the hanging line and the cable ring. It is a figure which shows the process of laying a new cable in the state which laid the suspension line and the existing cable between the utility poles. It is a principal part perspective view which shows the state which the 1st and 2nd guide members of a wire pass tool contact | abut to a cable ring. In the cable erection structure by the prior art, it is a figure which shows the process of constructing a new cable in the state which suspended the existing cable with the cable ring attached to the suspension line.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wiring tool according to an embodiment of the present invention will be described with reference to the accompanying drawings.
A wiring tool according to an embodiment of the present invention and a novel cable laying method using the same will be described with reference to FIGS.
1 and 2, the wire connecting device 10 according to the present embodiment is slidable in contact with the existing cable 4 and a lap portion 11 for slidably embedding the existing cable 4 having a substantially cylindrical line shape, for example. A main body 12 is basically provided.

The lap portion 11 is formed in a substantially cylindrical shape, and a slit 13 is formed at the lower end portion thereof. The front end portion and the rear end portion as viewed in the traveling direction of the lap portion 11 are formed with tapered portions 11a and 11b that are cut obliquely from each other toward the lower end where the slit 13 is formed. The wrap portion 11 is formed of, for example, an elastically deformable synthetic resin (for example, polypropylene), and as shown in FIG. The existing cable 4 can be wrapped and held slidably.
When the wrap portion 11 is attached to the existing cable 4 and the outer diameter of the existing cable 4 is relatively small, the slits 13 are held in a state where they overlap each other, and the outer diameter of the existing cable 4 is relatively small. When it is larger, the slit 13 is held in a separated state.

Moreover, the main body 12 connected to the lap portion 11 has one or a plurality of, for example, three rods 15, and the front end portion and the rear end portion thereof are bound. Each rod 15 has a circular arc shape in which a central portion in the longitudinal direction swells outward, and is disposed such that each rod 15 is positioned at a corner portion of, for example, a substantially triangular shape, preferably a substantially regular triangle, in the central portion in the longitudinal direction. . Therefore, it is set as the structure which the two rods 15 which make the bottom part of a substantially triangle sit on the surrounding surface of the existing cable 4 in the state which attached the wiring tool 10 to the existing cable 4 with the lap | wrap part 11 (refer FIG. 4). .
Further, a new cable reel 17 is detachably connected to the rear end portion of the main body 12 via a connector 16 connected to a portion where three rods 15 are bundled.

In FIG. 4, a plurality of, for example, two square (rod-shaped) guide members 20, 21 are obliquely formed with respect to the main body 12 on the front end surface portion 18 formed on the front end side of each rod 15 in the main body 12. A state inclined toward the rear is attached as a reference position. Here, the guide members 20 and 21 are used as the first guide member 20 and the second guide member 21, respectively. These guide members 20 and 21 can swing around a base end portion attached to the distal end surface portion 18, The first spring members 22 are connected to each other at positions near the ends.
Therefore, the first and second guide members 20 and 21 can be approached and separated by the first spring member 22. Further, the intermediate portion of the first spring member 22 is connected to the distal end surface portion 18 by a second spring member 23, whereby the first and second guide members 20, 21 can be turned in the lateral direction and can be raised and hung. Thus, it is possible to return to the reference position by the elastic force of the first and second spring members 22, 23.

  Further, the first guide member 20 is higher in rigidity than the second guide member 21, and the length thereof is also a cable between the suspension wire 3 and the two guide rods 15 corresponding to the bottom of the triangle contacting the existing cable 4. The ring 6 is formed longer than the distance between the hanger 6a on the rear side and the hanger 6b on the front side. The two guide members 20 and 21 are held on both sides of the suspension line 3 and guide the travel of the line tool 10 with the line tool 10 attached to the existing cable 4. The first and second guide members 20 and 21 are in contact with the two suspension members 6a and 6b of the cable ring 5 to guide the rotation and are restricted when the wire 10 is traveling.

The wire connecting tool 10 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.
First, the cable laying structure between the utility poles 1 and 2 will be described with reference to FIG.
In the cable erection structure shown in FIG. 6, the suspension line 3 and the existing cable 4 are erected between the utility poles 1 and 2, and the cable ring 5 serves as a cable suspension for supporting the existing cable 4 from the suspension line 3. A plurality are arranged at predetermined intervals.
As shown in FIGS. 3 and 6, the cable ring 5 is provided with a base 6 for supporting the existing cable 4 at the bottom, and wire-like suspenders 6a and 6b are connected to both sides thereof. Each hanging tool 6a, 6b extends to a position shifted from each other on the front side and the rear side in the extending direction of the suspension line 3 with respect to the base 6, and is bent and locked to the suspension line 3, respectively. Therefore, when the wire connecting tool 10 is advanced on the existing cable 4, the first and second guide members 20 and 21 are installed at substantially the same position in the traveling direction of the wire connecting tool 10. The member 20 extends rearward and comes into contact with the suspended hanging tool 6b. Subsequently, the second outer member 21 comes into contact with the hanging tool 6a on the front side, and the hanging tools 6a and 6b are moved with a time difference. I will get over.

Next, a method for laying a new cable using the wire tool 10 will be described.
First, in the existing cable 4 between the utility poles 1 and 2 shown in FIG. 5, the opening of the wrap portion 11 of the wiring tool 10 is widened by the slit 13 to the existing cable 4 passing through the cable ring 5 from the one utility pole 1 side. It is elastically deformed and hung on the existing cable 4 to be locked. A reel 17 for a new cable is connected to the connector 16 at the rear end of the main body 12 of the wiring tool 10.
Then, when an operator in the gondola 9 of the construction vehicle having a predetermined height on the utility pole 1 side pushes out the wire fitting 10, the cross section of the three rods 15 of the main body 12 is omitted as shown in FIGS. Since the two rods 15 positioned at the bottom of the triangle are installed on the circumferential surface of the existing cable 4 having a substantially cylindrical shape, the wire fitting 10 slides in a stable state without rotating on the existing cable 4. Can travel.

  Here, as shown in FIG. 5, the suspension tools 6 a and 6 b on both sides of the cable ring 5 that supports the existing cable 4 from the suspension line 3 are positioned at the apexes of a substantially triangular shape in cross section with the two rods 15 as the bottom. Thus, the three rods 15 of the wiring tool 10 are substantially triangular in cross-sectional view, with the two rods 15 placed on the existing cable 4 and the remaining one rod 15 located near the suspension line 3. It will be located at the corner. Therefore, the wiring tool 10 travels on the existing cable 4 in a stable state.

  The wiring tool 10 that slides on the existing cable 4 travels in the cable ring 5, and even if the existing cable 4 is supported by being in contact with the base portion 6 of the cable ring 5, the wrap portion 11 of the wiring tool 10. In the state where the slit 13 is widened, the existing cable 4 is embraced and locked, and does not come into contact with the base portion 6 of the cable ring 5, but may come into contact. In addition, since the first and second guide members 20 and 21 are arranged so that the suspension line 3 is sandwiched between the wire connecting tool 10, the lap portion 11 travels smoothly without rotating around the existing cable 4. .

As shown in FIG. 6, when the first and second guide members 20, 21 reach the cable ring 5 by the advancement of the wire connecting tool 10, first, the relatively long first guide member 20 extends backward. It abuts on the suspended hook 6b. When the wire passing tool 10 further advances, the first guide member 20 is guided in a direction (from the upper side to the lower side) away from the hanging line 3 along the inclined posture of the hanger 6b. Is slightly rotated counterclockwise around the existing cable 4 as viewed from the front in the traveling direction. At the same time, the first guide member 20 of the wiring tool 10 is guided by the hanger 6b and displaced so as to approach the existing cable 4, and the inclination angle becomes small.
In addition, if the wire guide 10 rotates until the relatively short 2nd guide member 21 contact | abuts to the suspension line 3, rotation will be controlled.

When the wire passing tool 10 further advances, as shown in FIG. 7, the second guide member 21 contacts the front hanging tool 6a with the relatively long first guide member 20 in contact with the hanging tool 6b. In contact therewith, the second guide member 21 is guided by the hanger 6a and rotates in a direction away from the suspension line 3 (from the upper side toward the lower side), and the inclination angle with the existing cable 4 gradually decreases. Accordingly, the wire fitting 10 is slightly rotated clockwise with respect to the existing cable 4 around the wrap portion 11 as viewed from the front of the wire wire 10 in the traveling direction, and rotates in the same direction beyond the original angular position. Move.
When the wire connecting tool 10 further advances, the second guide member 21 that is relatively short and has low rigidity first gets over the lifting tool 6a and returns to the original posture by the urging force of the first and second spring members 22 and 23. To do. At this time, the first guide member 20 is still in contact with the hanger 6b, and the first guide member 20 is in contact with the hanger 6b until the second guide member 21 abuts on and is separated from the hanger 6a. The tool 10 is returned to the original angular position. Then, when the wire connecting tool 10 further advances, the first guide member 20 gets over the lifting tool 6b and returns to the original posture and angle by the urging force of the first and second spring members 22,23.

By the way, since the rigidity of the 2nd guide member 21 is weaker than the 1st guide member 20, the direction by the contact | abutting with the 1st guide member 20 and the suspension tool 6b is comparatively large, and the 2nd guide member 21 and the suspension tool 6a. Even if the wiring tool 10 is further advanced in a state where the contact is made, the wiring tool 10 does not rotate counterclockwise when viewed from the front in the traveling direction.
Here, in the middle of passing through the cable ring 5, the first guide member 20 gets over the suspension line 3 by turning clockwise as viewed from the front in the traveling direction, and the first and second guide members Even if both 20 and 21 are on the suspension 6a side with respect to the suspension line 3, the second guide member 21 that is relatively short and has low rigidity proceeds over the suspension 6a first and sandwiches the suspension 6a. From the front in the direction, the second guide member 21, the hanging tool 6a, and the second guide member 20 are arranged in this order.
Then, by further advancing the wire passing tool 10, the hanger 6a and the first guide member 20 come into contact with each other, and the first guide member 20 that is long and has a large rigidity is moved upward along the hanger 6a (direction approaching the hanger 3). ), The wire passing tool 10 rotates counterclockwise as viewed from the front in the traveling direction, and further advances the wire passing tool 10, so that the first guide member 20 is closer to the hanger 6b side than the hanger 3 After getting over the cable ring 5 over the left side of the suspension line 3 when viewed from the front in the traveling direction, the guide members 20 and 21 return to their original positional relationship with the suspension line 3 interposed therebetween.

If the rigidity of the first and second guide members 20 and 21 is equal, or if the rigidity of the second guide member 21 is stronger than that of the first guide member 20, the second guide member 21 and the hanger 6a are in contact with each other. When the wire passing tool 10 is further advanced in the contacted state, the second guide member 21 moves upward (in the direction approaching the suspension line 3) along the hanging tool 6a and at the same time the first guide member 20 is hung. Since the wire 10 moves downward along the tool 6b, the wire guide 10 rotates counterclockwise when viewed from the front in the traveling direction, and after passing through the cable ring 5, the second guide member 21 is suspended. It will come out to the suspension 6b side (left side from the suspension line 3 seeing from the advancing direction front) side, and the wiring tool 10 will raise | generate a position shift.
In this case, after that, the wire connecting tool 10 advances, and even if the first guide member 20 having a small rigidity comes into contact with the hanging tool 6b, it cannot return to the hanging wire 3 side, and the wiring tool 10 causes a displacement. Become.

Thus, the wire passing tool 10 returns to the original angular position while abutting and swinging against the first and second guide members 20 and 21 and the hanging tools 6a and 6b of the cable ring 5, and gets over the hanging tools 6a and 6b. .
While repeating such an operation, the wiring tool 10 advances while sequentially over the plurality of cable rings 5 while being guided by the suspension line 3 and reaches the other utility pole 2.
Then, an operator waiting at the other power pole 2 can install a new cable between the power poles 1 and 2 by attaching a new cable to the reel 17 and returning the wiring tool 10 toward the one power pole 1. A new cable is also supported in the cable ring 5 together with the existing cable 4.

As described above, according to the wiring tool 10 according to the present embodiment, the main body 12 is provided with the elastically deformable wrap portion 11 that can embrace the existing cable 4 at the separated slit 13 portion. 10 wrap portions 11 can be elastically deformed and expanded to be held in the existing cable 4, and even if the existing cable 4 is supported by the cable ring 5 arranged at a predetermined interval with respect to the suspension line 3, The wiring tool 10 can be efficiently installed on the existing cable 4 for traveling.
Therefore, there is no need to provide an adjusting means for expanding and contracting the openings of the pair of latch pieces in order to engage with various existing cables 4 having different outer diameters as in the case of a conventional leading tool, and the structure is simple and the expansion and contraction operation Easy.
In addition, since the wire rod 10 has two of the three rods 15 of the main body 12 disposed at the corners of the bottom of the substantially triangular cross section and is in contact with the peripheral surface of the existing cable 4, It is possible to suppress the wiring tool 10 from rotating around the existing cable 4 during traveling.

Further, in the wiring tool 10 according to the present embodiment, the cable ring 5 supports the existing cable 4 with the base 6 on the bottom side, and is engaged at a position away from the suspension line 3 with the hanging tools 6a and 6b on the upper end side. Even when the first and second guide members 20 and 21 are stopped, the first and second guide members 20 and 21 come into contact with the suspension members 6a and 6b of the cable ring 5 while swinging over, and are guided by the suspension line 3 to pass through the passage device 10. Since it can run, the reel 17 supported by the wiring tool 10 can smoothly get over the plurality of cable rings 5 without being twisted, and a new cable can be installed.
Moreover, in order to construct a new cable in the cable ring 5, it is necessary to remove or hang the cable ring 5 from the suspension line 3 as in the prior art when the passing tool 10 passes through the cable ring 5. The wiring tool 10 can be made to travel easily and easily.

  Further, when traveling the wire 10, the suspension line 3 does not have to be connected to the existing cable 4 as in the conventional technique, and can be smoothly traveled along the existing cable 4 even if separated. .

In addition, the wiring tool 10 by this invention is not limited to the above-mentioned embodiment, As long as the summary of this invention is not changed, a suitable change can be employ | adopted.
For example, in the wiring tool 10 according to the present embodiment, it is not always necessary to provide three rods 15 of the main body 12. For example, if the first and second guide members 20 and 21 are provided, at least one rod 15 is sufficient. Further, regardless of the presence or absence of the first and second guide members 20, 21, if at least two rods 15 are provided and arranged in contact with both sides of the upper surface of the existing cable 4, a line along the existing cable 4 is provided. The travel of the tool 10 can be guided.

In addition, as a cable hanger for supporting the existing cable 4 on the suspension line 3, a spiral hanger shown in the related art described above may be provided instead of the cable ring 5. And even when a space is formed between the lower part of the existing cable 4 and the spiral hanger, or even when they are in contact with each other, the wiring tool 10 is caused to travel by being held in the wrap portion 11 using the existing cable 4 as a guide. Can do.
The existing cable 4 does not need to be a single cable, and may be a bundle of a plurality of cables. Further, the wire connecting tool 10 is provided with the first and second guide members 20 and 21 on the front end surface portion 18 of the main body 12, but instead of this, the first and second guide members 20 and 21 are provided on the lap portion 11. Also good.

DESCRIPTION OF SYMBOLS 3 Suspension line 4 Existing cable 5 Cable ring 6 Base part 6a, 6b Suspension tool 10, 10A, 10B Passage tool 11 Lap part 12 Main body 13 Slit 15 Rod 17 Lead 20 First guide member 21 Second guide member 22 First spring member 23 Second spring member

Claims (4)

A wiring tool that is slidably attached to an existing cable supported by a cable hanger on a hanging line laid between power poles, and is connected to a new cable reel so as to travel along the existing cable. ,
A main body to which the new cable reel is connected on the rear end side, an elastically deformable wrap portion that embeds the existing cable at a slit portion provided on the main body and separated, and provided on the main body or the wrap portion. And a swingable guide member supported on both sides of the suspension line.   The wiring member according to claim 1, wherein the guide member includes an elastic member that can be displaced and elastically restored when the guide member abuts on the cable suspension.   Two guide members are provided on both sides of the suspension line, the first guide member is longer and more rigid than the second guide member, and the first guide member is the second guide when traveling. The wire passing device according to claim 1 or 2, wherein the cable suspension comes into contact with the cable suspension before the member, and the second guide member is detached from the cable suspension before the first guide member.   The wiring tool according to any one of claims 1 to 3, wherein the main body has at least two rods that contact the existing cable.

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