JP2000092637A - Method and equipment for leading in subscriber's incoming line and hanging hook for leading in subscriber' s incoming line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for leading in a subscriber's incoming line which can be conducted only at the first one-time working at a high place for leading in an overhead optical fiber cable to each household. SOLUTION: An overhead cable 4 is branched in an upper part of an electric pole 1 with only the first one-time work at a high place. A branched cable 7 to be led in to a subscriber is pulled down to be connected to a distribution and connection box 8 installed in part of the electric pole 1 near the ground. Meanwhile, a subscriber's incoming line 9 is extracted from a lower part of the distribution and connection box 8 and is wound around a tension member 25. After an anchor tool 26 in the middle of the tension member 25 is installed, a guide wire 33 extended downward owned by a hanging hook 29 fixed in an upper part of the electric pole 1 is passed through a ring section 27 possessed of by the anchor tool 26. Along the guide wire 33, the anchor tool 26 is pushed up using a rod 37 to hang it on the ring section 27. From there, the subscriber's incoming line 9 thus anchored on an upper part of the electric pole 1 is pulled in to a subscriber's household 5 nearby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for branching a part of an aerial cable such as a communication cable such as an optical fiber cable or a power distribution cable which is erected on a telephone pole and drawing it into a subscriber's house. The present invention relates to a method and apparatus for pulling in a subscriber's drop line and a hanging bracket for pulling in.

[0002]

2. Description of the Related Art For example, when an imaginary optical fiber cable or the like is drawn into a subscriber's house, a pair of a transmission side cable and a reception side cable are paired, and a required number of cables in a certain area are connected to a telephone pole. It is imagined above, and in the vicinity of the subscriber's house, the cable is branched by the number of the subscriber's house and drawn into each subscriber's house.

When performing such a pull-in operation,
Generally, aerial work using an aerial work vehicle or a ladder is required. However, according to this method, there is a case that a sufficient work space cannot be secured due to unstable ground or a parking relation, etc. There are problems such as the necessity of a license for the operation and obstacles to road traffic by taking up a work space.

[0004] Techniques that can solve such problems include:
The invention of JP-A-7-123550 has been proposed. According to the present invention, one end of a subscriber drop-in cable is branched and connected to an overhead cable, a wiring terminal box is connected to the other end of the subscriber drop-in cable, and the wiring terminal box is located at a position not so high from the ground of the telephone pole. This is a subscriber drop-in drop-in method, wherein the subscriber drop-in line is fixed, and a subscriber drop-in line is derived from the wiring terminal box and drawn into a subscriber's house. The present invention is advantageous in that the connection or removal of the subscriber drop-in line can be performed from the ground in a small space.

[0005]

However, Japanese Patent Application Laid-Open No.
According to the invention of JP-A-123550, in order to draw a subscriber's service wire into a subscriber's house, a subscriber service wire is derived from a wiring terminal box, and a service wire support ring fixed to an upper part of a telephone pole and an L-shaped metal member are connected. By rotating the endless guiding rope stretched in between, the subscriber drop-in wire is pulled into the subscriber's house through the wiring ring and the drop-in wire support ring,
The method is taken. Therefore, not only the guide rope does not get in the way, but also the subscriber drop-in line easily gets caught on each ring and hardware, resulting in poor workability. In addition, the more the service drop of the subscriber drop-in line is increased, the worse the workability of the addition is that the previously passed subscriber drop-in line becomes a hindrance. Moreover, since the guide rope is curled, there is a high possibility that the rotation operation cannot be smoothly performed at the time of extension, and the extension workability is poor. Also,
Since the subscriber drop drawn in through the fixed ring rubs against the ring, the retracted subscriber drop is highly likely to be damaged. Furthermore, since the components used for the pull-in are exposed and not protected, the appearance is poor and the integrity is low.

[0006] The first problem to be solved by the present invention is:
To provide a method for dropping a subscriber's drop-in line into a subscriber's home safely and easily from the ground and in which the dropped-in subscriber drop-in line is not likely to be damaged. is there.

[0007] A second problem to be solved by the present invention is that it is possible to safely and easily perform the operation of pulling in the subscriber drop-in line from the ground to the subscriber's house, and to draw in the subscriber drop-in line. An object of the present invention is to provide a subscriber drop-in pull-in device which does not cause damage to the line, has excellent integrity of the dropped subscriber drop-in line and the like, and is excellent in appearance.

A third object of the present invention is to provide a subscriber drop-in device having a storage protection tube suitable as a component of the device according to the second aspect of the present invention.

A fourth object to be solved by the present invention is suitable for carrying out the method of the first aspect of the present invention.
It is another object of the present invention to provide a pull-in suspension fitting suitable as a component of the apparatus according to the second aspect of the present invention.

[0010]

According to a first aspect of the present invention, there is provided a method of connecting a branch connection to an overhead cable, and connecting a wiring connection box to the other end of the connection cable. It is assumed that this wiring connection box is fixed at a position not so high from the ground of the telephone pole, a subscriber drop-in line is derived from this wiring connection box, and this is drawn into a subscriber's house. Then, in order to solve the first problem, after attaching a fastening tool to the subscriber drop wire, a drop wire having a guide wire whose lower end reaches near the wiring connection box is fixed to an upper portion of the telephone pole. Passing the guide wire of the hanging bracket through a ring portion of the fastening tool, and then pushing up the fastening tool along the guide wire using a rod and hooking the hanging tool on the hanging fitting, An intermediate part of the service drop is fixed to the upper part of the telephone pole, and a part of the service drop of the customer service drop ahead of the suspension fitting is drawn into the subscriber's house.

In the method of the present invention, after a fastening tool is attached to the subscriber's service line led out from the ground-side wiring connection box, a guide wire is passed through a ring portion of the fastening tool, and a rod is passed along the guide wire. , And the ring portion is hooked and fixed to the pull-in hanging metal fixture fixed to the upper part of the utility pole. With a simple operation using a rod, the middle part of the subscriber's service line can be supported from above the ground by a pull-in hanging bracket on the upper part of the telephone pole, and can be pulled into the subscriber's house.

Further, in order to solve the second problem,
The subscriber drop-in pull-in device according to the invention of claim 2 is:
A cable branch box that connects one end of a plurality of pairs of subscriber drop-in cables to the overhead cable, and a wiring connection box that is fixed at a position not so high from the ground of the telephone pole and to which the other end of the subscriber drop-in cable is connected. A pull-in hanging metal fitting having a hanging metal body fixed to an upper portion of the telephone pole, and a guide wire having an upper end connected to a tip of the main body and a lower end reaching near the connection box; While supporting the middle part of the subscriber drop line derived from the box,
A retaining member having a ring portion through which the suspension fitting is inserted, and being pushed up from the ground side by a rod and being hooked on the suspension fitting main body; a cable for securing the subscriber, which is fixed to the telephone pole, and the wiring It is characterized by comprising a connection box, a part of the subscriber's drop-in wire on a utility pole side, and a storage protection tube for storing the guide wire.

[0013] The drop-in device of the present invention uses a cable branching box to branch a subscriber drop-in cable from an aerial cable, and connects the drop-in cable to a wiring connection box provided near the ground of a telephone pole. After the subscriber drop-in wire is led out from the connection box, an intermediate portion of the drop-in wire is supported using a fastening tool. In this supporting procedure, the guide wire connected to the tip of the main body of the suspension fitting fixed to the upper part of the telephone pole and lowered to the vicinity of the connection box was inserted through the ring portion provided on the retaining tool. Then, the guide may be guided by the guide wire, and the catch may be pushed up from the ground using a rod and hooked on the hanging bracket main body. Therefore, particularly during the extension work, the worker can easily perform the work of pulling in the subscriber drop-in line while staying on the ground, so that the safety of the worker during the work can be ensured. In addition, since the fastener used to be hung on the suspension fitting by the ring part is used, the ring part and the suspension fitting body rub against each other, but the subscriber drop line may directly rub against the suspension fitting and be damaged. There is no. Furthermore, since the subscriber drop-in cable, the wiring connection box, the power pole side portion of the subscriber drop-in wire, and the guide wire are stored using a storage protection tube fixed to the power pole, until the next extension. In addition to the excellent preservation of the subscriber drop-in line and the like during standby, the periphery of the telephone pole is arranged and the appearance is improved.

In carrying out the second aspect of the present invention, the storage protection tube used therein is made up of a tube main body fixed to the electric pole and an opening along the longitudinal direction of the main body as in the third embodiment. An openable and closable tube cover is provided, and one of the tube body and the tube cover is provided with an engaging portion extending in the longitudinal direction, and the other is extended in the longitudinal direction and is detachable from the engaging portion. It is preferable that slidable engaging claws are provided, and the pipe cover is slidably attached along the longitudinal direction of the pipe main body by engagement of these engaging parts and the engaging claws. .

According to a third aspect of the present invention, the storage protection tube, which is one of the components of the subscriber drop-in pull-in device according to the second aspect, is formed in an elongated divided type, and includes a pipe main body and a pipe. The one composed of the lid and the cover is used. An engaging portion is provided on one of the tube main body and the tube cover, and an engaging claw portion slidable to and disengageable from the engaging portion is provided on the other. By using this split-type storage protection tube when pulling in the subscriber drop-in line by the drop-in method, the pipe cover is slid from the pipe main body installed on the telephone pole by the work of the worker manually from the ground. If you pull down and remove it while removing it, you can immediately start the retraction work, and after the retraction work is completed, the worker engages the engaging part and the engaging claw part, from the ground side If the pipe cover is pushed up while being slid and attached to the pipe main body, the subscriber drop-in cable, the wiring connection box, the telephone pole side portion of the subscriber drop-in wire, and the guide wire can be easily stored. For this reason,
In addition to being excellent in the maintenance of the subscriber drop-in line and the like at the time of standby until the next expansion, the surroundings of the telephone pole are arranged and the appearance is improved. Furthermore, as described above, since the worker can easily remove and attach the pipe cover from the ground, the working efficiency can be greatly improved, and the worker needs to work at high places. Since there is no need, the safety of workers during work can be ensured.

According to a fourth aspect of the present invention, there is provided a drop-in suspension fitting for supporting an intermediate portion of a subscriber drop-in wire drawn into a subscriber's house above a telephone pole,
A suspension bracket main body comprising a base fixed to the utility pole and a suspension connected to the base, and a guide wire having an upper end connected to the tip of the main body and a lower end extending to the ground side, The suspension portion includes a hook portion on the base portion side and an introduction bending portion having an inverted U-shape from the hook portion and having a downwardly directed distal end portion to which an upper end of the guide wire is connected. It is characterized by the following.

The pull-in suspension bracket of the present invention is provided with an introduction curved portion having a downwardly directed front end portion which is formed in an inverted U-shape from the hook and hold portion. Through a guide wire, along with this wire, the worker pushes up the subscriber drop-in line together with the fastening tool from below using a rod from the ground, and when hooking the hanging hook, the leading end of the introduction bending section and Since the guide wire and the guide wire are continuous in a straight line, the ring portion does not get caught at these joints, and the guide wire can be smoothly guided by the introduction curved portion as it is pushed upward, and can be hooked on the hook portion. Can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) Hereinafter, FIGS.
Based on the above description, a subscriber drop-in pull-in method according to the first embodiment of the present invention, a subscriber drop-in pull-in device 38 for executing this method, and a drop-in hanging bracket 29 will be described.

As shown in FIG. 1, a suspension wire fitting 2 is provided on a steel pole or the like standing on the ground, and a suspension wire 3 is stretched by the metal fitting 2 so as to connect the utility poles. I have. The suspension wire 3 is made of a twisted steel wire, and has sufficient strength to withstand the tension and load applied to the suspension wire 3. A large number of pairs of overhead cables 4 are suspended along the longitudinal direction of the suspension lines 3 so as to connect the utility poles to each other by the suspension lines 3.

A description will now be given of a pull-in procedure of a subscriber drop-in method. The pull-in operation of this method will be roughly divided into four steps of a cable branching operation, a subscriber drop-in line connecting operation, a subscriber drop-in line retaining operation, and a subscriber drop-in line drop-in operation in accordance with the order of the steps.

First, a cable branching operation is performed. This is a task of branching the overhead cable 4 into the subscriber's home 5 side and the side to be sent to the telephone pole further ahead. The imaginary cable 4
When pulling in to the subscriber's home 5 where there is a subscriber who wants to use the cable 4, first, from a region where the subscriber's homes 5 are gathered to some extent, a telephone pole standing at a distance close to each subscriber's home 5. 1 is selected, and a required number of subscriber drop-in cables 7 are branched from the overhead cable 4 in a cable branch box 6 provided near the upper part of the utility pole 1.
At this time, the number of the subscriber pull-in cables 7 to be branched is assumed to be the number in anticipation of additional subscription in the future. The branch point of the branched overhead cable 4 and the subscriber cable 7 is not frequently subjected to connection or removal work, but can be dismantled and reconstructed in consideration of the need for work. It is covered by a cable branch box 6 having a protection structure that protects the cable branch portion against the influence of the outside air such as flooding, salt damage, and corrosion, and prevents insulation failure and failure. In addition, the aerial cable 4 which does not branch is taken out from the cable branch box 6,
It is sent to the telephone pole further. The subscriber drop-in cable 7 branched from the cable branch box 6 is 1.8 m in the vicinity of the ground where workers can perform various operations from above the unreachable pole 1 using a workbench such as a stepladder.
It is pulled down along the utility pole 1 to a height of the order. In addition,
Only branching work of the overhead cable 4 is performed by a worker using a high work vehicle such as a bucket truck.

Second, a subscriber drop-in line connection operation is performed. This is an operation for connecting the subscriber drop-in cable 7 that has been branched and pulled down as described above and the subscriber drop-in wire 9 for pulling in to the subscriber home 5.

First, one end of the pulled-in subscriber pull-in cable 7 is connected to a wiring connection box 8 fixed at a position not higher than the ground of the utility pole 1 by about 1.8 m. Each of the subscriber pull-in cables 7 includes a pair of a transmission line 21 and a reception line 22.

As shown in FIG. 2, the wiring connection box 8 comprises a connection box body 10 and a connection box lid 11,
A sealing groove 14 is provided in the upper contact surface 12 with the case lid 11 so as to surround the box body upper opening 13 over the entire circumference. After the O-ring 15 is fitted in the sealing groove 14, the box body 11 is screwed into the box body 10 and removably mounted, thereby preventing rainwater or the like from entering the inside of the wiring connection box 8. It has become. A cable introduction hole 16 for introducing the subscriber's lead-in cable 7 into the wiring connection box 8 is provided in the upper part of the can lid 11.
A ring-shaped waterproof seal 18 is attached to the edge of the cable to seal the space between the cable 7 and the subscriber cable 7 to prevent rainwater or the like from entering the wiring connection box 8. A plurality of subscriber drop-in lead-out holes 19 for guiding the subscriber drop-in wire 9 from the inside to the outside of the box body 10 are provided in the lower wall of the box body 10. Inside the wiring connection box 8, a connector 20 for connecting and holding the subscriber drop-in cable 7 and the subscriber drop-in wire 9 is accommodated. This connector 20 is composed of a cable-side connector element 20a and a drop-in wire. Side connector element 20b.

Into the wiring connection box 8, the subscriber pull-in cable 7 pulled down earlier is introduced through the introduction hole 16. Cable connection plugs 84 are provided at the ends of the two wires 21 and 22 of the subscriber pull-in cable 7 for independently connecting each of them to the cable side connector element 20a. Cable 7 is connected to cable-side connector element 20a. This operation is performed only once, and is not performed at the time of expansion.

Each of the subscriber drop-in lines 9 is, similarly to the subscriber drop-in cable 7, one of which is a transmission line 23 and a reception line 2.
4 and a drop-in connection plug 85 for connecting each of the wires 23 and 24 to the drop-in side connector element 20b independently.
The subscriber drop-in lines 9 are connected to the drop-in side connector elements 20b by the drop-in connection plugs 85 by the number corresponding to the number of subscriber homes. This connection is connected to the subscriber drop 9
Through the lead-out hole 19 provided in the lower part of the connection box main body 10, and connecting the drop-in connection plug 85 to the drop-in side connector element 20b. With this connection, connector 2
One subscriber drop-in cable 7 required through 0
And one subscriber drop-in line 9 are conducted as a pair. This work is also performed when adding subscriber homes.

In the above procedure, the wiring connection box 8 is fixed at a position that is not so high from the ground of the utility pole 1, so that the worker can work on a high place work vehicle such as a bucket truck, a high place work rope, or a high work place. It is no longer necessary to use a ladder or the like that reaches the place to perform work at high places, and all of the cable connection work can be manually performed by a worker on the ground. Moreover, the wiring connection box 8 used in this embodiment has a structure in which the subscriber drop-in wire 9 is pulled out from the bottom of the wiring connection box 8 so that the subscriber drop-in wire 9 is formed in the wiring connection box 8 in a U-shape. Since there is no need to wrap around,
Since there is no need for a space for storing the folded part of the subscriber's service line 9 in the wiring connection box 8, the wiring connection box 8 is excellent in that it can be reduced in size. It is possible to reduce the risk of obstructing the passage of people and vehicles and the view.

Third, a subscriber drop-in line retaining operation is performed. This is the work of pulling up the middle part of the subscriber's service line 9 that has been connected to the wiring connection box 8 to the upper part of the utility pole 1 at a location where it cannot be reached, and keeping it at this position.

First, a wire-made tension member 25 around which the subscriber drop-in wire 9 is wound to prevent the subscriber drop-in wire 9 from breaking and sagging is removed from the vicinity of the wiring connection box 8 fixed near the ground of the telephone pole 1. It is drawn out in advance for the length that reaches the subscriber's house 5 via the telephone pole 1. Next, the subscriber drop-in wire 9 is wound around and held by the tension member 25, and is attached to a subscriber drop-in wire fastening tool 26 for fastening an intermediate portion of the tension member 25 to a high place above the telephone pole 1. The retaining member 26 wraps the tension member 25 or the like, and
And a tension member engaging portion 26a for retaining the tension member 25 and retaining the tension member 25 at one end, and the retaining member 26 at one end is retained by a retractable suspending metal fitting 29 described below provided on the upper part of the telephone pole 1. Has a ring portion 27 for it. The ring portion 27 is formed by bending a round bar and at least a part thereof has a ring shape. After the tension member 25 is attached to the retaining member 26 so as not to come off the intermediate portion, the subscriber drop-in wire 9 connected to the wiring connection box 8 is wound around the tension member 25 and the retaining member 26. In this case, the subscriber drop-in wire 9 is located near the subscriber drop-in drop-in section 28 of the subscriber home 5 so that the winding of the subscriber drop-in wire 9 around the tension member 25 is not unwound during the work of retaining the subscriber drop-in wire. May be temporarily fixed together with the tension member 25. Next, using a rod 37 from above the tension member 25 and an intermediate part of the subscriber drop-in line 9, the hanging member 26 is provided above the telephone pole 1.
9 and hooking the ring portion 27 on the hanging bracket 29, the retaining member 26 is retained on the telephone pole 1. The rod 37 is inserted into a part of the fastening tool 26 and has a pin-shaped engaging portion 37a which comes off from the fastening tool 26 by being pulled in a predetermined direction with respect to the fastening tool 26 held on the telephone pole 1.

As shown in FIG. 3 to FIG.
Is a suspension metal fitting body 32 comprising a base portion 30 for fixing this to the telephone pole 1, and a suspension portion 31 which is connected to the base portion 30 and retains the fastening tool 26;
2 and a guide wire 33 for guiding the fastening tool 26 from near the ground to the upper part of the utility pole 1.

The base portion 30 is provided with a hole 36 for fixing the suspension fitting 29 to the utility pole 1 using a bolt 80 and a nut 81. The suspending portion 31 has a shallow U-shaped hanging portion 34 for hooking the ring portion 27 of the fastening device 26 on the base portion 30 side of the hanging portion 31 to keep the fastening device 26, and the hanging portion 34. , And is formed integrally with the introduction curved portion 35 having a curved inverted downward U-shaped leading end and thus having a smooth inverted U-shape. The suspension portion 31 is formed by bending a round bar made of a material having high rigidity such as iron, and has a thickness that can be passed through the ring portion 27.
The guide wire 33 is connected such that its upper end is in a straight line with the tip of the introduction bending portion 35, and its lower end reaches the vicinity of the wiring connection box 8 fixed to the utility pole 1. The thickness of the guide wire 33 is such that it can be passed through the ring portion 27. As shown in FIGS. 3 and 4, there are first and second types of suspension fittings 29 which are adapted to the direction in which the suspension portion 31 extends with respect to the base portion 30.
As shown in the figure, a pair of two electric poles 1 is placed at the same height at the same height of the upper part of the electric pole 1 so that the suspension part 31 faces the same side of the electric pole 1 and sandwiches the diameter direction of the electric pole 1 from both outer sides. Is fixed using a bolt 80 and a nut 81. These fixing operations may be performed at the time of a high place operation of the cable branching operation, or may be performed in advance when the telephone pole 1 is erected.

In order to support the tension member 25 and the middle part of the subscriber's drop-in wire 9 above the telephone pole 1 by using the retaining member 26, the retaining member 26 may be pushed up from the ground using a rod 37. That is, in order to push up the retaining member 26, the rod 37 having a sufficient length reaching the suspension fitting 29 installed above the telephone pole 1 from the ground is used.
It is sufficient that the catch 26 is held by the engaging portion 37a at the tip of the arm and the worker pushes the catch 26 while operating the rod 37 from the ground. At this time, the lower end of the guide wire 33 reaching the vicinity of the wiring connection box 8 is held by the fastener 26.
The guide 26 can be guided along the guide wire 33, and the ring 27 can be suspended from the leading end of the introduction bending portion 35 to which the upper end of the guide wire 33 is connected by such pushing up. Frame 31
Can be hooked on the hanging portion 34 of the suspension portion 31. By the guide action of the guide wire 33, the tension member 25 and the subscriber drop-in wire 9 wound around the tension member 25 together with the retaining member 26 are attached to the suspension pole 29 at an unreachable height above the telephone pole 1.
Can be easily detained.

By using the retaining member 26, the ring portion 27 comes into contact with the rigid hanging bracket 29, and the subscriber drop-in line 9 does not have to directly rub against the suspension bracket 29 itself. No longer can be damaged. Further, the downward end of the smooth inverted U-shaped introduction curved portion 35 of the suspension fitting 29 and the upper end of the guide wire 33 are smoothly connected in a straight line.
The ring portion 27 of the retaining tool 26 guided by 3 is less likely to be caught at the joint between the upper end of the guide wire 33 and the suspension fitting 29. Therefore, it is possible to smoothly pass the ring portion 27 through the suspension portion 31 via the introduction bending portion 35, hook the ring portion 27 on the hook portion 34, and hold the catch 26 on the hanging bracket 29.

Further, as described above, one of the two suspension metal fittings 29 installed at the two places
After confirming the direction of the subscriber's house 5 for drawing in the subscriber's service line 9 with the telephone pole 1 as the center, select the closer one of the two suspension brackets 29 and retain. What is necessary is just to hold the tool 26. As described above, the suspension fittings 29 are installed at two places at an interval of 180 ° around the telephone pole 1, and the fastening fittings 26 are fastened to the suspension fitting 29 closer to the subscriber's house 5. For example, in any direction of 360 ° around the pole 1,
The subscriber drop-in line 9 can be pulled in without being entangled.

After confirming that the retaining member 26 has been securely retained by the hanging bracket 29, a wire pulling part (not shown) is pulled so that the subscriber drop-in wire 9 is pulled by the tension member 25 with an appropriate slack. The length of the tension member 25 is adjusted by using this. This completes the subscriber drop-in retention work.

As the last and fourth operation, a subscriber drop-in operation is performed. This is an operation of pulling in the subscriber's service wire 9 fastened to the upper part of the utility pole 1 from here to the subscriber's home 5 by using the fastening member 26 and the hanging metal fitting 29 together with the tension member 25.

At the start of the above-mentioned subscriber drop-in wire drop-in work, the subscriber drop-in wire drop-in section 2 of the subscriber home 5
8 while maintaining an appropriate tension while paying attention to prevent the subscriber's service line 9 from being pulled back to the telephone pole 1 side. By correctly connecting to the subscriber drop-in connection terminal, the work of pulling in the subscriber drop-in line 9 is completed.

At the end of the above-described subscriber drop-in wire retaining operation, even after the subscriber actually starts using the subscriber drop-in wire 9, the tension member 25 is not greatly slackened and receives a slight impact. Since the length of the tension member 25 is adjusted by using a wire pulling member (not shown) so that the tension member 25 is pulled by an appropriate tension that is not cut off by just cutting, the tension is applied by such an appropriate tension. The subscriber lead-in wire 9 wound around the tension member 25 is less likely to be broken by being pulled by excessive tension, and is held by an appropriate frictional force, and is shifted from a higher direction to a lower direction. When the subscriber drop line 9 falls, the weight of the subscriber drop line 9 itself becomes a burden, and the possibility of disconnection by itself is reduced. In addition, the work of pulling in the subscriber drop-in line is generally performed on the roof of the subscriber's home 5 in many cases. Unlike climbing the utility pole 1 using a ladder for working at heights, the scaffolding is of course fixed and the subscriber's house 5 is a solid building with a solid structure, Since the rope can be securely fixed, the safety of the worker during the work can be ensured unlike the general work at a high place.

After the above-described cable branching operation, subscriber drop-in connection operation, subscriber drop-in retaining operation, and subscriber drop-in pull-in operation, the subscriber is placed in the storage protection tube 39 made of a synthetic resin member. The incoming cable 7, the wiring connection box 8, the portion of the subscriber incoming line 9 on the side along the utility pole 1, and the guide wire 33 are housed and protected. As a storage method, the wiring connection box 8 fixed to the utility pole 1 is once removed, and the storage protection tube 39 is pushed up from the ground side so as to be stored in the storage protection tube 39 from below the wiring connection box 8. Go. After storing the wiring connection box 8, the subscriber pull-in cable 7, the part of the subscriber pull-in wire 9 along the power pole 1 and the guide wire 33, which are separated, are gathered in the storage protection tube 39. Like so
The storage protection tube 39 is further pushed up to the upper part of the utility pole 1. After this push-up, first, the storage protection tube 39 is fixed to the utility pole 1, and then the wiring connection box 8 is fixed to the lower end in the storage protection tube 39, and the subscriber pull-in cable 7, the wiring connection box 8, Part of the service drop 9 along the utility pole 1,
And the storage of the guide wire 33 is completed. Also, in the first embodiment, since the subscriber drop-in wire 9 is wound around the tension member 25, the tension member 25 is stored in the storage protection tube 39 together with the tension member 25, but in this case, it is not shown. While maintaining an appropriate tension of the tension member 25 using a wire puller,
This storage operation will be performed. After the storage operation is completed, the end of the tension member 25 on the utility pole 1 side is fixed in the storage protection tube 39 near the position where the wiring connection box 8 is fixed. As described above, by using the storage protection tube 39 to store the subscriber drop-in cable 7, the wiring connection box 8, the portion of the subscriber drop-in wire 9 along the utility pole 1, and the guide wire 33, The components can be always protected and maintained in a good condition during the standby until the extension of the power pole, and since the components do not remain exposed,
This helps to maintain security around the road, and does not obstruct traffic on the road on which the telephone pole 1 is erected.

As described above, the subscriber drop-in method is performed by the subscriber drop-in method, except for the first cable branching operation from the aerial cable 4, and all subsequent work is performed on the ground. Alternatively, since the work can be performed on the roof of the subscriber's house 5 whose working environment is on the ground, the safety of the worker during the work can be ensured. Similarly, except for the first cable branching operation,
Since there is no need to use a high-altitude work vehicle such as a bucket truck, enormous costs such as car purchase costs or rental fees are not required, and labor and time for obtaining a license for driving the work vehicle and obtaining a license The wage burden of hiring new workers can also be eliminated. Further, the work efficiency is not greatly affected by the size of the road around the telephone pole 1 and the subscriber's house 5 and the traffic conditions of people and cars. Further, when the power pole 1 is tilted due to loose ground, the ground around the power pole 1 is hardened,
However, when wooden is highly corroded, foundation work for ensuring the safety of the work site, such as reinforcing the utility pole 1 from the outside, is also unnecessary, so that these extra work can be omitted. .

(Embodiment 2) Next, a subscriber drop-in apparatus 38 according to a second embodiment of FIGS. 6 to 8 will be described. It should be noted that the difference from the drop-in device 38 according to the first embodiment is that the subscriber drop-in cable 7, the wiring connection box 8, the portion of the subscriber drop-in wire 9 along the utility pole 1,
Only the storage protection tube 39 that stores and protects the guide wire 33 and the tension member 25 will be described.

The storage protection tube 39 used in this embodiment
Is a semi-cylindrical pipe body 40 formed in a long half-shape.
And a semi-cylindrical tube cover 41. Pipe body 4
On both sides of the arc on the convex side of 0, a pedestal 42 for fixing the tube main body 40 to the utility pole 1 and an outer support leg 43a and an inner support leg 43b for supporting the tube main body 40 form a pair. The support legs 43 are formed integrally with the tube body 40 along the entire length of the tube body 40 along the longitudinal direction of the tube body 40, respectively, and the tube body 40, the outer support legs 43a, the inner support legs 43b, and the pedestal 42 are formed. And a hole 44 is formed. A fixing flange 45 for fixing the pedestal 42 to the utility pole 1 is formed at an outer end of the pedestal 42. At the central portion on the convex side of the tube main body 40, a positioning concave portion 46 is formed sandwiched between the pedestals 42 from both outer sides. In addition, at both ends of the opening of the tube body 40, the tube cover 4 is attached to the tube body 40.
1 is fitted so that the concave side of the tube body 40 and the concave side of the tube cover 41 face each other, and a step-shaped ridge 49 for connecting the tube body 40 and the tube cover 41. An engaging portion 50 is formed on the outside of the outer surface, and has an ear shape. The engaging portion 50 extends over the entire length of the tube main body 40 in the longitudinal direction. From the outside of the ridge 49 to the engaging portion 50, a slope is formed which spreads outward. Further, the inner side of the ridge 49 is formed with a tapered surface such that the thickness becomes slightly thinner from the base toward the tip.

Hooks 5 for connecting the pipe cover 41 to the pipe main body 40 are provided near both ends on the convex side of the pipe cover 41.
Each of the hooks 51 is provided with an engaging claw 52 for hooking on the engaging portion 50 of the tube body 40 so that the tube cover 41 attached to the tube body 40 does not come off. Is provided. The engaging claw 52 extends over the entire length of the tube lid 41 in the longitudinal direction. Both open ends of the pipe cover 41 are formed in a tapered surface such that the wall pressure becomes slightly thinner from the base of the hook 51 to the tip thereof.
The tapered surface 49 is in contact with the inner tapered surface of the 0 ridge 49.

The materials of the pipe main body 40 and the pipe cover 41 include ease of handling during operations such as transportation and construction, ease of processing such as cutting in accordance with the length of the utility pole, durability, and insulation. It is desirable to use, for example, a synthetic resin member such as hard polyvinyl chloride from the viewpoints of properties and manufacturing costs. The configuration other than the above is the same as that of the first embodiment.
8 to 8, the same parts as those in the first embodiment are denoted by the same reference numerals.

Next, a procedure for installing the tube main body 40 on the utility pole 1 in installing the storage protection tube 39 on the utility pole 1 will be described. First, the extending direction of the suspending portion 31 of the two pull-in suspending brackets 29 installed on the upper part of the telephone pole 1 is confirmed. Then, the left and right positions of the tube main body 40 are adjusted so that the two guide wires 33 suspended at the tip of the suspension portion 31 are accommodated inside the concave side of the tube main body 40. When the left and right alignment is substantially determined, the up and down alignment is performed next. At this time, the upper end of the pipe main body 40 is
, And the lower end of the pipe body 40 is set to a position that is not so high about 1.8 m from the ground where the worker is located. The pipe main body 40 is attached to the utility pole 1 in a state where the pipe main body 40 is aligned in the right, left, up and down directions. As shown in FIG. 5, the pipe body 40 is directly attached to the utility pole 1 using bolts 82 and nuts 83 by using bolt holes provided on a scaffold of the utility pole 1 as shown in FIG.

Instead of the above procedure, the tube body 40 may be attached to the utility pole 1 by the following procedure described with reference to FIG. In this case, first, the positioning presser 53 is temporarily fixed on the peripheral surface of the utility pole 1 using an adhesive or the like, and then the positioning protrusion 54 provided at the center of the presser 53 is provided.
The positioning concave portion 46 provided on the convex side of the tube main body 40 is fitted to the tube body 40. Next, the fixing flange 45 formed integrally with the pipe main body 40 is sandwiched between the positioning presser 53 and the positioning presser 53 from both sides using the flange presser 55 so as to penetrate the mating portion of the two pressers 53 and 55. And bolt 8
What is necessary is just to fix to the electric pole 1 using 2 and the nut 83.

In any one of the above-described methods, the pipe main body 40 is attached to the utility pole 1.
Then, the wiring connection box 8 is fixed to the lower end portion on the concave side of the tube main body 40. In addition, a stopper 56 for guiding the tension member 25 or connecting the end of the tension member 25 on the utility pole is driven into the concave side of the tube main body 40 as necessary.

As described above, the pipe body 40 of the storage protection tube 39 is installed on the utility pole 1, and the wiring connection box 8 and the stopper 56 are fixed to the concave side of the tube body 40. After the end of the tension member 25 on the utility pole side is tethered, the above-described operation of the subscriber drop-in wire pull-in method of the present invention is performed. It should be noted that the pipe body 40 is attached to the utility pole 1 when performing high-altitude work using a bucket truck or the like in the cable branching work.
Alternatively, it may be performed in advance when erecting the telephone pole 1.

Next, based on FIG. 6 and FIG.
The procedure for attaching the tube cover 41 to the subroutine 0 will be described as a final operation that is continuous to a series of operations in the above described method of drawing in the subscriber's service line.

After the above-mentioned subscriber drop-in operation,
While assembling the storage protection tube 39 by attaching the tube cover 41 to the tube body 40, the subscriber's lead-in cable 7, the wiring connection box 8, the subscriber's drop-in wire 9, and the guide wire 3 are provided therein.
3, a storage protection operation for storing and protecting the tension member 25 is performed.

That is, the upper end of the tube cover 41 is fitted into the lower end of the tube body 40. At this time, the hooks 51 provided on both outer sides of the open end of the tube cover 41 wrap the ridges 49 and the engaging portions 50 provided on both outer sides of the open end of the tube body 40 from the outside, and the tube cover The hook engaging surface 57 of the engaging hook 52, the hook jaw 58, the hook inner side surface 59 of the hook 51, and the engaging portion of the hook 50 provided on the tube main body 40. End face 60, engaging portion outer corner 61, and engaging portion outer surface 6
2 are fitted so that they are close to each other. At the same time, the tube cover side opening end front surface 6 provided on the tube cover 41 is provided.
3. The pipe cover side opening end alignment angle 64, the tube lid side opening end side surface 65, and the hook root inner corner 66 are defined by the pipe body side opening end front face 67 provided on the pipe body 40, the pipe body side opening end matching angle. 68, the ridge inner side surface 69, and the ridge inner corner 70 are fitted so as to be in close contact with each other. As described above, by ensuring that the respective joints are in close contact with each other, for example, even when the telephone pole 1 is standing immediately beside the railway track, or when the traffic volume is heavy and a large vehicle frequently stands on the side of the road where traffic frequently comes and goes. The possibility that the tube lid 41 slips down from the tube main body 40 due to the vibration received therefrom can be reduced.

Next, after confirming that the above-mentioned respective joints are indeed intimately contacting each other, the tube cover 41 is pushed upward from below the tube main body 40 to the concave side of the tube main body 40 while being pushed upward. Storage protection tube 39 formed by the concave side of tube lid 41
, The subscriber pull-in cable 7, the wiring connection box 8, the subscriber drop-in wire 9, the guide wire 33, and the tension member 25 are stored therein. Then, the lower end of the tube cover 41 is made to coincide with the lower end of the tube main body 40, and this attaching operation is completed.

Therefore, also in the second embodiment, the first
The problem to be solved by the present invention can be solved by the same operation as the embodiment. Furthermore, the storage protection tube 39 is divided into a plurality of parts in the longitudinal direction, and the tube cover 41 can freely slide up and down with respect to the tube body 40 on the fixed side. When newly adding the line 9, for example, by sequentially removing the tube cover 41 from the lower side,
Since the entire tube cover 41 can be removed, the subscriber drop-in wire 9 can be connected to the wiring connection box 8 manually while the operator is on the ground. Therefore, the work of adding the subscriber drop-in line 9 can be further facilitated, and the structural advantage of the wiring connection box 8 having the subscriber drop-in lead-out hole 19 provided in the lower part can be utilized, and the inspection work of each component can be performed. It is excellent in that it can be easily made. In addition, since each of these components has a simple structure, an operator can easily handle the components.

Next, a storage protection tube 39 used in a subscriber drop-in wire drop-in device 38 according to a third embodiment will be described with reference to FIGS. As shown in FIG. 9 and FIG.
It accommodates and protects the wiring connection box 8, the utility pole side portion of the subscriber drop-in wire 9, the guide wire 33, and the tension member 25, and also serves as a part of the steel utility pole 1. That is, as shown in FIG.
9 comprises a tube main body 40 and a tube cover 41 which can be detachably attached thereto. As shown in FIGS. 10 and 11, the tube main body 40 is formed by providing a concave portion extending along the longitudinal direction of the tube main body 40 on the side wall 72 of the utility pole 1 itself.
On both sides of the recess entrance, there is an ear-shaped engaging portion 50 protruding inward.
A stepped tube lid stopper 73 is provided on the opening side further to the engaging portion 50.

The tube lid 41 is formed in a smooth arc shape together with the side wall 72 so as to form the side surface of the column. Inside the tube cover 41, hooks 51 for connecting the tube cover 41 to the tube main body 40 are provided at two places.
An engagement claw 52 for hooking on the engagement portion 50 of the tube main body 40 is provided at a tip portion of the tube main body 40 so that the tube cover 41 connected to the tube main body 40 does not come off. The storage protection tube 39 is made of a synthetic resin member such as steel or hard polyvinyl chloride.

Next, the operation of attaching the pipe cover 41 to the pipe main body 40 will be described. Similarly to the storage protection tube 39 used in the subscriber line drop-in device 38 of the above-described second embodiment, the upper end of the tube lid 41 is fitted to the engagement portion lower end 75 of the tube main body 40 and fitted from below. Go out. At this time, FIG.
The engaging claw 52 provided on the tube cover 41 as shown in FIG.
Claw portion engaging surface 57, claw portion jaw 58, hook outer surface 76 of hook 51, engaging portion end surface 60 of engaging portion 50 provided on tube body 40, engaging portion inner corner 77, and The engagement portion inner side surfaces 78 are fitted so as to be in close contact with each other. At the same time, the tube cover body side opening end front surface 63, the tube cover body side opening end alignment angle 64, and the tube cover body side opening end side surface 65 provided on the tube cover body 41 are also provided on the tube body 40. The stopper 73 is fitted into the tube body side opening end front face 67, the tube body side opening end mating angle 68, and the tube body side opening end side face 79 so as to be in close contact with each other. After confirming the closeness of the above-mentioned respective joint portions, the pipe cover 41 is pushed upward from below the pipe main body 40.

As a result, the subscriber pull-in cable 7, the wiring connection box 8, the subscriber drop-in wire 9, the guide wire 33, and the tension member are accommodated in the storage protection tube 39 formed by the tube main body 40 and the tube lid 41. 25 are stored and protected. After the storage protection operation is completed, an upper cover (not shown) may be attached to the upper part of the storage protection tube 39 in order to protect each of the stored components from rain or the like.

Further, the storage protection tube 39 of the third embodiment
The suspension fitting 29 used in the first and second embodiments has a different length and direction in which the suspension part 31 extends from the base part 30 of the suspension fitting 29 used in the first and second embodiments.
As shown in FIG. 12, when the storage protection tube 39 is viewed from directly above, both ends of the suspension portions 31 of the two suspension fittings 29 are in contact with the concave portion of the tube body 40 and the concave side of the tube cover 41. It is formed so as to come above the inside of the storage protection tube 39 made of.

The configuration of the third embodiment can of course solve the problems to be solved by the present invention. Furthermore, since the use of the storage protection tube 39 of the third embodiment itself also functions as the utility pole 1, the configuration is simple, and the storage protection tube 39 protrudes outside the utility pole 1 to prevent traffic. Excellent in not disturbing. The configuration other than the above is the same as that of the first embodiment, and the same reference numerals are given to the same parts in FIGS. 9 to 12 as those of the first embodiment.

The present invention is not limited to the first, second, or third embodiment. For example, the third
In the subscriber drop-in wire drop-in device 38 of the embodiment, when a more miniaturized suspension fitting 29 is used for the pull-in device 38, a pair of the miniaturized suspension fittings 29 is attached to the side wall 72 of the pipe body 40. Instead, if they are attached to the inner wall surface of the concave portion of the tube body 40 so that they face each other,
The periphery of the storage protection tube 39 can be further organized and the appearance can be improved. In each embodiment, when the rod 37 used when performing the work of retaining the subscriber drop-in line is not used, the rod 37 may be housed through the lower end opening inside the hole 44 and a lid may be appropriately attached. It may be stored inside the storage protection tube 39, so that no special storage place is required and the risk of loss can be eliminated. Further, the pipe body 40 as described above is used.
In order to strengthen the connection between the pipe body 41 and the pipe lid 41, tapes or the like which have been subjected to anti-slip processing such as corrugation may be applied to the joint surfaces thereof.
A keyed fastener may be provided between and the tube cover 41. Further, the electric pole 1 may be made of a synthetic resin member, steel or concrete. If the height of the telephone pole 1 is the same height as the roof of the subscriber's house 5 or is lower than the roof, or if the telephone pole 1 and the subscriber's home 5 are close to each other, this subscription is performed. The subscriber drop-in wire 9 can sufficiently withstand its own weight, torsion, friction between the subscriber drop-in wire 9 and the fastener 26, and the like. It is not necessary to wind 9.

[0061]

According to the subscriber drop-in method according to the first aspect of the present invention, the subscriber drop-in connection work and the pole are performed at the time of extension work after performing only the first cable branching operation at a high place. Since the subscriber drop-in work and the subscriber drop-in work can be almost entirely performed from the ground by using, the work of dropping the subscriber drop-in into the subscriber's house can be performed safely and easily. In addition, there is no danger that the subscriber drop wire drawn in by the use of the fastening device will be damaged at the support portion to the telephone pole.

Further, according to the subscriber drop-in apparatus according to the second aspect, since the method of the first aspect can be carried out, the operation of pulling the subscriber drop-in line into the subscriber's house can be performed safely and easily. In addition, there is no possibility that the subscriber drop-in wire drawn by using the fastening device may be damaged at the support portion to the telephone pole. In addition, since the storage protection tube is used, the maintenance of the drop wire and the like is excellent, and the appearance can be improved.

Further, according to the subscriber drop-in line drawing device of the present invention, the storage protection tube used in this drawing-in device is of a split type, and is added at the time of the subscriber drop-in drawing-in operation and in the future. Even at the time, since the worker can attach and detach the pipe cover to and from the pipe main body from the ground, the handling is simple and the working efficiency can be improved.

According to the fourth aspect of the present invention, when the fastener is attached to the metal fitting using a rod, the fastener is attached to a portion where the guide curved portion and the guide wire are connected. Since it can be smoothly guided to the hooking portion without being hooked, it is suitable as a component of the subscriber drop-in wire pull-in device, and the subscriber drop-in pull-in method can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a subscriber's service line is pulled into a subscriber's house by using the subscriber service device according to the first embodiment of the present invention.

FIG. 2 is a sectional view of a wiring connection box provided in the drawing-in device shown in FIG. 1;

FIG. 3A is a side view showing a first pull-in hanging bracket provided in the pull-in device shown in FIG. 1; (B) is a front view which shows the 1st retraction | hanging suspension fitting with which the retraction apparatus shown in FIG. 1 is provided.

FIG. 4A is a side view showing a second pull-in hanging bracket provided in the pull-in device shown in FIG. 1; (B) is a front view which shows the 2nd suspension metal fitting with which the retraction apparatus shown in FIG. 1 is provided.

FIG. 5 is a plan view of the retracting device shown in FIG. 1;

FIG. 6 is an exploded plan view showing a storage protection tube provided in the drawing-in device shown in FIG. 1;

FIG. 7 is a side view showing how the storage protection tube shown in FIG. 6 is assembled.

FIG. 8 is a plan view showing a state in which a storage protection tube provided in the subscriber drop-in lead-in device according to the second embodiment of the present invention is mounted on a utility pole.

FIG. 9 is a front view showing a state in which a subscriber's service line is pulled into a subscriber's house using the subscriber service device according to the third embodiment of the present invention.

FIG. 10 is an exploded cross-sectional view showing a storage protection tube included in the drawing-in device shown in FIG. 9;

11A is a perspective view showing a part of the main body of the storage protection tube shown in FIG. (B) A perspective view showing a part of the lid of the storage protection tube shown in FIG.

FIG. 12 is a cross-sectional view showing a state in which a pull-in hanging bracket is attached to a storage protection tube provided in the pull-in device shown in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Utility pole 4 ... Aerial cable 5 ... Subscriber's house 6 ... Cable branch box 7 ... Subscriber drop-in cable 8 ... Wiring connection box 9 ... Subscriber drop-in wire 26 ... Subscriber drop-in wire fastening tool 27 ... Ring part 29 ... Pull-in Suspension bracket 30 ... Suspension bracket base 31 ... Suspension bracket suspension 32 ... Suspension bracket main body 33 ... Guide wire 34 ... Suspension bracket hanging and holding unit 35 ... Suspension bracket introduction bending part 37 ... Rod 38 ... Subscriber drop-in lead-in device 39: storage protection tube 40: storage protection tube main body 41: storage protection tube lid 50: engagement portion 52: engagement claw portion

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Takami Sasaki 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. F-term (reference) 5G367 DA01 DA02 DB07 DB07 DB11 DC02

Claims (4)

[Claims] 1. An aerial cable to which one end of a subscriber drop-in cable is branched and connected, a wiring connection box is connected to the other end of the subscriber drop-in cable, and the wiring connection box is not so high above the telephone pole. In the subscriber drop-in lead-in method of drawing out a subscriber drop-in line from the wiring connection box and drawing it into the subscriber's home, after attaching a fastening tool to the subscriber drop-in line, the lower end is connected to the wiring connection. The guide wire of the pull-in suspension fitting fixed to the upper part of the telephone pole with the guide wire reaching the box vicinity is passed through the ring portion of the fastening tool, and then the fastening tool is used with a rod. Pushed up along the guide wire and hooked on the hanging bracket, the middle part of the subscriber drop line is held on the upper part of the telephone pole. A method for dropping a subscriber's service line, wherein a destination portion is drawn into the subscriber's house. 2. A cable branch box for connecting one end of a plurality of pairs of subscriber drop-in cables to an aerial cable, and fixed at a position not so high above the telephone pole, and the other end of the subscriber drop-in cable is connected. A wiring connection box, a suspension fitting body fixed to the upper part of the power pole, and a guide wire having an upper end connected to the tip of the main body and a lower end reaching near the connection box. Metal fittings, while supporting the middle part of the subscriber drop-in wire derived from the connection box, has a ring portion through which the hanging fittings are inserted, and is pushed up from the ground side by a rod to the hanging fitting main body. A fastening device to be hooked; a cable for securing the subscriber, which is fixed to the telephone pole;
A subscriber drop-in drop-in device, comprising: the wiring connection box, a portion of the subscriber drop-in wire on a utility pole side, and a storage protection tube that stores the guide wire. 3. The storage protection tube is formed of a tube main body fixed to the power pole, and a tube cover capable of opening and closing an opening along a longitudinal direction of the main body. Either one is provided with an engaging portion extending in the longitudinal direction, and the other is provided with an engaging claw portion which extends in the longitudinal direction and is slidable and slidable with the engaging portion to engage with these engaging portions. The subscriber drop-in pull-in device according to claim 2, wherein the pipe cover can be slidably attached along a longitudinal direction of the pipe main body by engagement with a claw portion. 4. A drop metal fitting for supporting a middle part of a subscriber drop line drawn into a subscriber's house on an upper part of a telephone pole, wherein the base part is fixed to the telephone pole and a suspension connected to the base part. And a guide wire having an upper end connected to the distal end of the main body and a lower end extending to the ground side, wherein the suspension portion is a hook-and-hold portion on the base portion side, A pull-in suspension fitting, comprising: an introductory curved portion connected to the retaining portion in an inverted U-shape and having a downwardly directed distal end portion to which an upper end of the guide wire is connected.