JP2008125250A - Cable passing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly pass a communication cable. <P>SOLUTION: A cable passing tool A is provided with a runner member 1 inserted into a spiral cable hanger 14 hung in an aerial cable laid between telegraph poles 15, a traction member 2 which is installed at an outer lower part of the spiral cable hanger 14 by making it face the runner member 1 and can be pulled from the ground, and a rotary member 3 which is freely rotatably supported by the traction member 2, and in which notches 11 are formed at an outer periphery and a part of the outer periphery is inserted into the spiral cable hanger 14 through the notches 11. When a pulling rope 13 is installed in the traction member 2, the pulling rope 13 is pulled on the ground and the cable passing tool A is advanced, the spiral cable hanger 14 is passed between the runner member 1 and the traction member 2 and is smoothly led to the notches 11 of the rotary member 3. Thus, work efficiency becomes high. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable wiring tool that is used when a communication cable is increased and connected with an increase in demand in a spiral cable hanger suspended by an aerial cable installed between utility poles.

  When it is necessary to increase the number of communication cables already installed between utility poles due to an increase in demand for communication services, first, a helical cable hanger made of steel wire is suspended from the existing overhead cables between the utility poles. Many construction methods are used for passing a new communication cable in the spiral cable hanger.

  When the spiral cable hanger is used, a plurality of communication cables can be laid together, so that the appearance can be made clearer than a case where a plurality of communication cables are independently installed.

  The method shown in FIG. 8 is adopted as one simple method for passing a communication cable for a new extension into the spiral cable hanger suspended from the existing aerial cable. In this method, an aerial work vehicle 19 is laid sideways on a utility pole 15, and an operator on the aerial work vehicle 19 pays out a wire-shaped wire passing tool 20 with a guide member 18 attached to the tip by hand. The guide member 18 is sent to the next utility pole 15. Further, on the next power pole 15, a communication cable (not shown) is attached to the tip of the guide member 18, and the wiring tool 20 is pulled back to the pay-out-side power pole 15, thereby forming a spiral shape between the power poles 15. Route the communication cable through the cable hanger.

  For example, the guide member 18 has a shape shown in FIG. 9, and three arcuate members 22 are provided so as to surround one mandrel 21, and a spindle-shaped tip portion 23 is provided at the tip of the mandrel 21. Since the arcuate member 22 projects outward in the radial direction of the mandrel 21, it prevents the helical cable hanger 14 and mandrel 21 from coming into direct contact. Therefore, the distal end portion 23 provided at the distal end of the mandrel 21 is unlikely to come out from the gap of the spiral cable hanger 14 when the wire passing tool 20 is extended.

  Further, the line tool 20 is made of a resin having high bending rigidity, and the line tool 20 does not buckle in the middle of the feeding, so that the guide member 18 is smoothly fed.

  However, in the wiring method using the wiring tool 20, it is necessary to reciprocate the wiring tool 20, which is a simple feeding jig, between the utility poles 15 in order to pass one communication cable. Since the distance of one work process between the utility poles 15 is usually 40-50 m, work efficiency is poor. In addition, since the above-described feeding work is simultaneously performed at a plurality of locations of the work on the aerial work vehicle 19 and the feeding work of the wiring tool 20 on the ground, the work requires a plurality of workers.

  If a communication cable such as an optical fiber is directly connected to the guide member 18 and can be inserted into the spiral cable hanger 14, it is not necessary to use a feeding jig such as a wiring tool 20. In order to facilitate connection and wiring to the relay device, a certain degree of flexibility is provided, and since the communication cable is easily bent, the guide member 18 cannot be smoothly inserted.

Therefore, as shown in Patent Document 1, a cable connection tool for directly connecting a communication cable into the spiral cable hanger 14 without using the connection tool 20 has been proposed. As shown in FIG. 10, the cable connecting tool is provided with a plurality of radial notches 11 and a rotating member 25 having a protrusion 24 formed on the circumference thereof. A main body 28 having an upper roller 26 and a lower roller 27 is rotatably accommodated. Further, an operating rod 29 is vertically fixed at the center of the rotating member 25, and a guide member 30 is provided at the front end of the main body 28, and a cable attaching member 31 is provided at the rear end. The circumferential pitch of the notches 11 is designed to match the winding pitch of the helical cable hanger used.
JP 2000-134738 A

  The communication cable wiring work using the cable wiring tool is as follows. First, a tow rope for pulling the communication cable is attached to the cable attachment member 31, the main body 28 is inserted into the spiral cable hanger 14, and the operator operates it. The rotating member 25 is rotated by holding the rod 29 in the hand and rotating the operating rod 29, and the spiral cable hanger 14 is fed into the radial notch 11 formed in the rotating member 25. Next, when the rotating member 25 is rotated, the helical cable hanger 14 passes between the rotating member 25 and the main body 28 along with the rotation, and is sent to the rear side in the traveling direction of the cable connecting tool. The cable connecting tool can be advanced through the cable hanger 14.

  Since the operator can perform the above-described wiring work on the ground by using a bar having a ground height at least on which the helical cable hanger 14 is erected as the operation bar 29, the operator can perform the above-mentioned wiring work. The operator's danger is eliminated.

  In the method shown in Patent Document 1, the operation of feeding the spiral cable hanger into the notch formed in the rotating member is performed by the operator operating the operating rod. This spiral cable hanger is hung on an aerial cable laid between power poles, so it is easy to shake during work, and it is attached to the tip of the control rod against a spiral cable hanger that is several meters above the ground. Since the wiring tool is operated from the ground, a certain level of skill and arm strength for lifting the operation rod are required to perform this operation smoothly.

  Moreover, since the circumferential pitch of the notch is designed to match the winding pitch of a specific spiral cable hanger, the winding pitch is locally different depending on the suspended state of the spiral cable hanger. In the case of a helical cable hanger, the circumferential pitch and the winding pitch do not match, and the work of feeding the helical cable hanger into this notch is very laborious and the working efficiency is greatly reduced.

  Also, by increasing the number of notches, the work of feeding the helical cable hanger into the notches becomes easy, but it becomes easier for a plurality of notches to fit into a plurality of rotating rollers at the same time. Shaking is likely to occur during rotation.

  Therefore, the present invention does not require the skill of the operator or the arm force for moving between the utility poles while holding the operation rod, and can smoothly carry out the communication cable passing operation. It is an object of the present invention to prevent the cable wiring tool from rattling when the wiring tool is used.

  In order to solve the above-described problems, the present invention includes a runner member inserted into a spiral cable hanger, a pulling member provided on the outer lower portion of the spiral cable hanger so as to face the runner member, and towable from the ground. A rotating member that is rotatably supported by the pulling member, has a notch formed in the outer periphery, and a part of the outer periphery is inserted into the spiral cable hanger through the notch, and is inserted into the spiral cable hanger. The cable connecting tool is composed of a suspension part provided on the runner member that supports the outer peripheral end of the rotating member so as to be suspended.

  The said structure WHEREIN: An arc-shaped rail can be formed in the said runner member, and at least 2 places can slide the said rail among the edge parts of the said rotating member. Furthermore, a rotating roller can be provided at this end.

  Moreover, the taper which narrows the clearance gap between the said runner member and a traction member can be formed in the said traction member, so that it goes to the center from the edge part of this traction member.

  The length of this runner member can be made longer than the distance for two cycles when the helical cable hanger is suspended from the overhead cable between the utility poles.

  Furthermore, a guide member for preventing the runner member from slipping out of the gap between the spiral cable hangers can be provided at the tip of the runner member.

  According to the present invention, the spiral cable hanger is guided between the runner member and the traction member to reach the notch of the rotating member as the cable passing tool advances. It is easy to feed the into the notch. Therefore, it is possible to work quickly without requiring the skill of the operator or the arm force for moving between the power poles while holding the operation rod.

  In addition, at least two of the end portions of the rotating member slide on the arc-shaped rail of the runner member, and the tip of each end portion is tangential in the rail, that is, only rotational motion is performed. Since it is allowed, no rattling occurs except in the rotational direction. Furthermore, if a rotating roller is provided at each end, the rotational movement is smoother.

  When the traction member is tapered, the helical cable hanger is guided more smoothly between the runner member and the traction member, so that workability is further improved.

  Further, when the length of the runner member is longer than the distance of two cycles when the helical cable hanger is suspended from the overhead cable between the utility poles, the runner of the cable passing tool is advanced. Since the member is always supported by the spiral cable hanger in at least two places, the runner member is kept horizontal and stable.

  1 and 2 show an embodiment of the cable connecting tool of the present invention. The cable connecting tool A is composed of a runner member 1, a pulling member 2, and a rotating member 3.

  The runner member 1 is formed with a screw hole 4 for screwing the guide member at the front end, and a connecting member 5 for connecting the communication cable at the rear end. Further, an arc-shaped rail 6 is formed at the center in the length direction of the runner member.

  The pulling member 2 is formed with a connecting hole 7 for connecting a pulling rope 13 for pulling the pulling member 2 from the ground. When the connected pulling rope 13 is pulled in the forward or backward direction, the pulling member 2 rotates around the axis 8 of the rotating member 3 to which the 2 is attached. For example, when pulled in the traveling direction, the pulling member 2 rotates as shown by a two-dot chain line in FIG. A shoulder portion 9 is formed on the pulling member 2, and a taper 10 is formed adjacent to the shoulder portion 9.

  Further, similarly to the runner member 1, an arc-shaped rail 6 is formed on the pulling member 2.

  The rotary member 3 is formed with ten notches 11, and a rotary roller 12 is provided at the end of the rotary member 3. As the rotating roller 12 rolls on the rail 6 formed on the runner member 1 and the pulling member 2, the rotating member 3 around the axis 8 is smoothly rotated.

  The runner member 1 has a length that is equal to or longer than the distance of about two cycles when the helical cable hanger 14 is suspended from an aerial cable between utility poles. The member 1 is supported by the helical cable hanger 14 in at least two places. Therefore, the support becomes unstable during the movement, and the risk of the runner member 1 coming out of the gap between the spiral cable hangers 14 is low.

  As shown in FIGS. 3 and 4, when the tow rope 13 is pulled in the traveling direction from the ground, the towing member 2 rotates in the pulled direction (arrow t in FIG. 3A). At this time, since a gap is formed between the runner member 1 and the traction member 2 and the taper 10 is formed on the traction member 2, the helical cable hanger 14 is smoothly fed into the notch 11 (see FIG. 3 (a)). When the cable connecting tool A is further advanced (a white arrow in FIG. 3B), the spiral cable hanger 14 is moved backward along with the rotation of the rotating member 3 (the arrow r in FIG. 3B). It is sent out (FIG. 3B).

  In this operation, when the runner member 1 comes out of the spiral cable hanger 14, the tip of the runner member 1 that has come out is spiraled by pulling the pulling rope 13 backward to retract the cable wire A once. It can be returned into the cable hanger 14.

  In actual work, as shown in FIG. 5, the runner member 1 of the cable wire A is inserted into the spiral cable hanger 14 suspended from the aerial cable 16 installed between the utility poles 15. An operator on the ground pulls the tow rope 13, moves the cable connecting tool A in the traveling direction, and passes the communication cable 17. In order to prevent the runner member 1 from slipping out of the gap between the spiral cable hangers 14 during movement, it is preferable to provide a guide member 18 in the screw hole 4 formed at the tip of the runner member 1.

  6 and 7 show another embodiment of the cable connecting tool of the present invention. Similarly to the embodiment shown in FIG. 1, the cable connecting tool A also includes a runner member 1, a pulling member 2, and a rotating member 3. The total length of the pulling member 2 is longer than that of the above-described cable passing tool, and the two pulling members 3 are provided on the pulling member 2. The function of each rotating member 3 is the same as that of the above-described embodiment.

  Connection holes 7 are formed in the vicinity of the front and rear ends of the traction member 2, and a traction rope or the like for traction of the traction member 2 from the ground is connected to each. When the pulling force of the two front and rear tow ropes is adjusted, the cable wire A can be tilted forward or backward, so that the spiral cable hanger 14 is partially bent. Even in this case, it is possible to smoothly pass through the portion where the deflection occurs by adjusting the pulling force.

  In addition, the runner member 1 has a length that is equal to or longer than a distance of about two cycles when a general-purpose spiral cable hanger 14 is suspended from an aerial cable between utility poles. Similar to the above, the runner member 1 is always stably supported by the helical cable hanger 14.

  Since the usage mode of this cable connecting tool A is substantially the same as the above-mentioned one Example, description is abbreviate | omitted.

Side view and front view of one embodiment of the present invention Sectional drawing of the principal part of one Example of this invention Operational diagram of one embodiment of the present invention The principal part perspective view of one Example of this invention Schematic showing the mode of use in one embodiment of the present invention Side view and front view of another embodiment of the present invention The principal part perspective view of other Examples of this invention Schematic showing work in one embodiment of the prior art Side view of guide member Side view of another embodiment of the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Runner member 2 Pulling member 3 Rotating member 6 Rail 8 Axis center 10 Taper 11 Notch 12 Rotating roller 14 Spiral cable hanger 15 Electric pole 18 Guide member

Claims (6)

  A runner member (1) inserted into a spiral cable hanger (14) installed between the utility poles (15), and provided on the outer lower portion of the spiral cable hanger (14) facing the runner member (1). The traction member (2) that can be pulled from the ground and the traction member (2) are rotatably supported, and a notch (11) is formed on the outer periphery, and a part of the outer periphery is formed through the notch (11). A runner that supports the rotating member (3) inserted into the spiral cable hanger (14) and the outer peripheral end of the rotating member (3) inserted into the spiral cable hanger (14) so as to be suspended. A cable wiring tool of a spiral cable hanger (14) comprising a hanging part (6) provided on a member (1).   2. The cable routing device according to claim 1, wherein the hanging portion is formed of an arc-shaped rail (6), and at least two of the end portions of the rotating member (3) slide on the rail (6). .   The cable connecting tool according to claim 2, wherein a rotating roller (12) is provided at an end of the rotating member (3) to roll the rail (6).   The taper (10) which narrows the clearance gap between the said runner member (1) and a traction member (2) is formed in the said traction member (2) so that it goes to the center from the edge part of this traction member (2). To 5. The cable passing device according to any one of 3 to 4.   The length of the said runner member (1) is made longer than the distance for 2 periods when the said helical cable hanger (14) is suspended by the overhead cable between utility poles (15). Cable wiring tool according to Crab.   The guide member (18) for preventing the runner member (1) from falling out from the gap of the spiral cable hanger (14) is provided at the tip of the runner member (1). Cable entry tool as described.

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