JPH08103012A - Method and apparatus for laying cable - Google Patents

Abstract

PURPOSE: To lay a cable such as an optical fiber cable, to each housing in a short time by utilizing the existing drain tube. CONSTITUTION: A main cable-bundle is attached at suitable intervals by holders 13 to the ceiling of a sewage pipe. Lead wires pass from the cesspool 43a of each home, led to a manhole 46a via a drain pipe 44a and the sewage pipe 45, a branch cable-bundle 41 is connected to the lead wire of the manhole side, the wire is pulled from the cesspool side, and the branch cable-bundle passes between the manhole and the pool. Then, the arm of an operating vehicle is remotely controlled while monitoring the wire of the ceiling displayed on the monitor television of the exterior, the branch cable-bundle is caught by a hook, and engaged with the cable holding member of the holder 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for laying a cable such as an optical fiber in each household by utilizing an existing drainage pipe connected from a sewer pipe to a wastewater reservoir of each household.

[0002]

2. Description of the Related Art In recent years, as a method for laying a communication cable such as an optical fiber, a construction method has been developed in which a space is provided above a sewer pipe. Japanese Patent Examinations 3-50483
The one shown in No. is like that, the lead car with the cable passed through the sewer pipe inserted in the sewer pipe is run inside the pipe and runs along the pipe ceiling, and the pipe ceiling on both sides of the cable is set by the drills installed in the subsequent facility After making a drill hole in the hole, push the U-shaped holder with a striker and press each leg into the drill hole to fix the cable to the ceiling of the pipe. 6-
In 1930, a hook-shaped cable holder mounting portion is configured to be expandable / contractible by a vertical hole drilled around the axis and a vertical groove that communicates with the vertical hole. After filling the agent, press the mounting part with the plunger inserted into the drill hole drilled in the pipe ceiling, and fix it with the adhesive that overflows to the outside of the mounting part as the plunger is pushed into the vertical hole. Something that has been done is proposed.

[0003]

The method of laying a cable such as an optical fiber in a sewer pipe does not impair the original function of the sewer pipe because the cable is laid in the upper space of the pipe where sewage and rainwater do not flow. Moreover, there is an advantage that the cable is hardly immersed in water, and the cable can be buried at a low cost in a short period of time without excavating the road.

An object of the present invention is to lay a cable such as an optical fiber in each household by using an existing drain pipe connected to a wastewater reservoir, and an object thereof is to provide a method and an apparatus therefor. .

[0005]

According to the laying method of the present invention, the first step of passing the cable main line through the sewer pipe, the facility car inserted in the sewer pipe is made to run in the pipe, and the pipe ceiling is provided by the drill provided in the facility car. After making a drill hole in the hole, push in the holder equipped with multiple hook-shaped cable holders with a striker, capture the cable trunk line with any of the cable holders, and insert the holder's mounting part into the drill hole to secure it. Two steps, and the third step of connecting the cable branch from the sewage reservoir of each household directly or through the lead wire to the drainage pipe and the sewer pipe, collecting them in one of the manholes located on both sides and connecting to the cable trunk line Then, the work vehicle inserted in the sewer pipe is run inside the pipe, and the hook provided on the work vehicle is remotely operated to capture the cable branch line and hook it on another cable holder of the holder. Characterized by comprising from 4 steps.

According to this method, the branch line connected to the cable trunk line in the manhole is held together with the trunk line in the cable holder of the holder, and each cable branch line is laid in each household through the waste water reservoir. It In this method, in order to pass the cable trunk line through the sewer pipe, a method of passing the cable trunk line directly from the manhole to the manhole, a method of passing the lead wire from the manhole to the manhole and then connecting the cable trunk line to the lead wire, etc. are adopted. can do.

The work vehicle used in the above laying method includes an arm that is lifted and swingably supported in the circumferential direction of the pipe, a rotating unit that rotates the arm in the circumferential direction of the pipe, and a lift that raises and lowers the arm. Means, a hook fixed to the upper end of the arm, a lever for opening and closing the opening of the hook, a means for opening and closing the lever, an illuminating means, and a television camera for photographing a portion illuminated by the illuminating means. And

The branch line is caught by the hook of this work vehicle,
The cable holder can be hooked up and down while observing the branch lines taken by the TV camera on an external monitor TV,
By remotely controlling the rotating means and the opening / closing means, the arm is raised with the lever open, and at the same time, the arm is rotated in the circumferential direction of the pipe to be advanced to capture the branch line. After capturing, the lever is closed by the opening / closing means, and then the arm is lowered by the elevating means, while the arm is pivoted in the circumferential direction of the pipe while the branch line is trapped by the pivoting means to be retracted. Thereby, the branch line is pulled and the slack of the branch line is recovered. Next, the arm is raised and moved forward by the raising and lowering means and the rotating means, and the branch wire captured by the hook is pressed against the cable holder and hooked. The lever is opened by the opening / closing means before and after this.

As described above, the branch wire is hooked on the cable holder of the holder and held on the ceiling of the sewer pipe, but when one branch wire is caught except one branching to the drain pipe. , While observing the branch lines displayed on the monitor TV, the turning means and the elevating means are remotely controlled so that the other branch lines can be caught by the hook except one branching, but the branch line is branched to the drain pipe. Then, one branch line extending from the sewage reservoir may be pulled up from the sewage reservoir and all the branch lines may be captured as described above in a tensioned state. In this case, after capturing all the branch lines, only one branch line which is tensioned when retracting comes out and is separated from the gap between the hook and the lever when retracting.

In another laying method, a cable branch line for each sewage reservoir is sent from the sewage reservoir through a drain pipe and a sewer pipe to one of manholes located on both sides thereof.
And a second step of connecting the cable trunk and the cable branch in the manhole and selecting and connecting the cable branches to be connected.

In yet another laying method, the cable branches are laid using lead wires. In this case, it is possible to lay the lead wires in the same manner as the cable branch wires, then connect the cable branch wires to the lead wires and pull the lead wires to lay the cable branch wires. It is necessary to hold the connected lead wires so that they are not dragged into the drainage pipe, and the longer the lead wires, the more difficult it is to pull them together.

Therefore, a lead wire is passed between the waste water reservoirs, a cable branch is connected to the lead wire, and the lead wire is pulled up so that the cable branch wire is passed between the waste water reservoirs, and then the cable branch wire is connected at the waste water reservoir. You should connect your comrades. Therefore, still another laying method is that the lead wires are respectively passed from the wastewater reservoir to the drainage pipe and the sewer pipe, and fed into one of the manholes located on both sides of the drainage pipe and the sewer pipe.
The process, the second process of selecting and connecting the lead wires to be connected in the manhole, and the cable branch wires are connected to the respective ends of the connected lead wires, and the lead wires are pulled together to form the respective wastewater sump blocks. It is characterized by comprising a third step of passing the cable branch line between them and a fourth step of connecting the cable branch lines to each other in each wastewater reservoir.

In still another laying method, in each of the above-mentioned laying methods, the cable main line is passed through the sewer pipe directly or by a lead wire, and then, when the holder is fixed to the pipe ceiling, it is caught by the cable holder. Instead, the facility car first runs in the pipe and fixes the holder with a plurality of cable holders on the pipe ceiling at appropriate intervals, then, after passing the cable trunk line in the pipe by the method described above, Remotely operate the hook provided on the car and lay the cable trunk on the cable holder of the holder. In this case, the cable trunk line and the cable branch line use the same hook, and either one can be hooked first and the other can be hooked on the cable holder of the holder. It is also possible to catch the cable branches with separate hooks and hook them on the cable holder of the holder.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a facility vehicle in which a holder is driven into the ceiling of a pipe, and FIGS. 2 and 3 show a working vehicle in which a cable branch is hung on a holder fixed to the ceiling of the pipe. The facility vehicle 1 is configured so that clamps 2 provided at the front and rear are lifted by driving an air cylinder 3 and pressure-bonded to a ceiling portion of a pipe 6, and a motor 4 is provided at a central portion of the facility car 1 to fix the pipe. A support base 5 is provided, which can be rotated around an axis parallel to the axis to change the inclination,
A movable base 9 which is screwed to a screw rod 8 which is rotationally driven by a motor 7 and which is stopped from rotation is supported on the support base 5 so as to be movable left and right by the rotation of the screw rod 8. The movable base 9 includes a drill 10. The lift table 11 is supported so as to be able to move up and down, and the striker 14 that pushes up the holder 13 supplied by the holder magazine 12 and press-fits and fixes it in the drill hole formed by the drill 10 is supported.

As shown in FIG. 4, the holder 13 has a shape in which hook-shaped cable holders 15 and 16 having different shapes are vertically connected, and a mounting portion 17 which is press-fitted into a drill hole.
The shaft hole 18 is formed in the more vertical direction, and the mounting portion 17
A vertical groove 19 communicating with the shaft hole 18 is formed in the. The shaft hole is filled with an epoxy resin or other viscous adhesive 21, and a plunger 22 is inserted from above.

When the holder 13 is press-fitted and fixed in the drill hole, the striker 14 pushes up the holder 13, the cable holder 15 catches the cable trunk 20, and the mounting portion 17 is pushed into the drill hole 23. Then the plunger 2
2 hits the bottom of the drill hole 23 and is pushed in, and the adhesive 21 in the shaft hole is extruded and fixed in the drill hole (FIG. 5).

As shown in FIGS. 2 and 3, the work vehicle 25 has a light 26 for illuminating the traveling direction and a television camera (not shown) at the front end, and a light 2 for illuminating the pipe ceiling at the rear.
7 and a TV camera 28 for shooting the irradiation cylinder,
In addition, a housing 32 is installed in the central portion so as to rotate (right and left direction in FIG. 2) around the fulcrum a in a plane orthogonal to the tube axis by driving the motor 31 constituting the rotating means in the forward and reverse directions. An arm 33 is supported to be movable up and down, and a pinion 34 provided in the housing meshes with a rack 35 of the arm 33. Then, when the pinion 34 is rotationally driven by the motor 36, the arm 33 is moved up and down.
And the like constitute the raising and lowering means of the arm.

A hook 37 having an inverted V shape is fixed to the upper end of the arm 33, and a lever 38 having a dog shape for opening and closing the opening portion of the hook 37 is pivotally supported at an intermediate portion thereof, and the lever 38 is always provided. A wire 39, which is urged by a spring (not shown) to rotate in the counterclockwise direction in FIG. 2, that is, is urged in the opening direction and connected to the lower end of the lever, is wound by a winding device (not shown) provided in the housing. When the wire 39 is loosened by the winding device, it is rotated counterclockwise by the action of the spring to open it. The spring, the wire 39, and the winding device constitute a lever opening / closing means.

When the cable branch 41 is captured, the ceiling of the pipe is illuminated with the light 27 and the TV camera 28 is used to illuminate the ceiling.
With the lever 38 opened, the motors 31 and 36 are remotely controlled to move the arm 33 up and down and move in the left and right directions in FIG. It is trapped in (closing the lever 38 after capturing) or by closing the opened lever 38. After the capture, the arm 33 is slightly lowered or swung slightly to the right in FIG.
The cable branch 41 is pulled to give tension. afterwards,
The arm 33 is raised and pivoted to the left in FIG. At the time of turning, the cable branch 41 captured by the hook 37
After hitting the retreating rising portion 16a of the cable holder 16, the arm 33 still pivots to the left in the figure, and the cable branch line 41 slides on the rising portion 16a and enters into the cable holder 16. . After that, when the lever 38 is opened and the arm 33 is lowered and pivoted rightward, the cable branch line is detached from the hook 37.

Next, a method of laying the cable trunk line and the cable branch line will be described. When laying the cable trunk 20, the cable trunk 20 is drawn into the sewer pipe 6 between manholes directly or by a lead wire. Next, the facility car 1 shown in FIG. 1 is dropped into the manhole, moved by a certain amount in the sewer pipe and stopped, and the facility car 1 is clamped at the time of stop 2,
Set to the fixed state by 3. Then, first, the motor 7 is driven to retract the movable table 9 leftward in FIG. 1 by a certain amount, and then the lifting table 11 is raised while driving the drill 10 to form the drill hole 23 of a certain depth in the pipe ceiling. Pierce. After drilling, lower the lift 11 and put the drill 10 into the drill hole 2
Pull out from 3. Then, the movable table 9 is moved forward in the right direction in FIG. At this time, the holder 13 supplied from the holder magazine 12 onto the striker 14 has a drill hole 23.
It is in a position that matches with.

Next, the striker 14 is lifted to push up the holder 13, and the cable holder 15 is used to pull up the cable main line 20.
And the mounting portion 17 is pushed into the drill hole 23. Then, by pushing the plunger 22, the adhesive in the shaft hole 18 of the mounting portion 17 overflows into the drill hole and is fixed. As described above, the cable main line 20 is supported by the holder 13 on the pipe ceiling at appropriate intervals as shown in FIG.

In the above embodiment, the cable trunk line 20 is laid by installing the holder of the facility car along the cable trunk line along the pipe ceiling by the leading car. The holder 13 may be attached while the pipe is placed along the ceiling of the pipe.

As shown in FIG. 7, when the drainage pipe 44 is connected to the sewer pipe 6, the support base 5 is rotated in the circumferential direction by the motor 4, and the drill 10 and the striker 1 are rotated.
Change the direction of 4. Then, the holder 13 is fixed to the position displaced from the drainage pipe 44 in the same manner as described above, and the cable main line 20 is held. Next, a method of laying the cable branch wire 41 will be described with reference to FIG.

Sewage reservoirs 43a, 43b, 43c, 43d of the households between the manholes 46a, 46b (in FIG. 1, for convenience sake, there are four sewage reservoirs between manholes, but in reality there are more. Or a sewage tank of less than that is installed.) Through each lead wire, and the drain pipe 44
It is sent to the manhole 46a through a, 44b, 44c, 44d and the sewer pipe 45. Next, after connecting the cable branch wire 41 to the lead wire in the manhole 46a, the lead wire coming out of the waste water reservoir is pulled up to pull out the cable branch wire 41 from the waste water reservoir, or each of the wires coming out of the waste water reservoir. The cable branch 41 is connected to the lead wire, the lead wire is pulled up in the manhole, and the cable branch 41 is pulled out into the manhole.

As for the cable branch line 41, as described above, lead wires are passed through all drainage pipes connected to the sewer pipe 45 between the manholes 46a and 46b, and the manhole 4
After sending to 6a, connect the cable branch 41 one after another,
The lead wires may be pulled together, or the lead wires may be inserted each time or every two or three lead wires may be inserted, and the cable branch wires may be directly inserted into the manhole without using the lead wires. You may make it send out to 46a.

After the cable branch lines 41 are drawn out into the manhole 46a, each cable branch line 41 is connected to the cable connection box 4
7 and connect with the cable trunk 20. Next, the work vehicle 25 is sent into the sewer pipe 45 through the manhole 46a. The work vehicle 25 moves while photographing the pipe ceiling illuminated by the light 27 with the television camera 28, and the state is monitored from the outside by the monitor table. And holder 1
The work vehicle 25 is once stopped at a position exceeding 3. Then, as described above, the motors 31 and 36 are remotely controlled to move the arm 33 up and down and move left and right, and the hook 3
The cable branch line 41 captured in 7 is pulled in the circumferential direction of the pipe to give tension, and then pressed against the holder 13 and hooked on the cable holder 16.

As described above, the cable branch wires 41 are hooked one after another on the cable holder 16 of each holder 13. In the first drain pipe 44a, when one cable branch line 41 is drawn into the drain pipe 44a, the other cable branch lines 41 other than this are the same as above, and the cable holder 16 of the holder 13 When catching the cable branch line in the hook 37, the motors 31 and 36 are remoted while observing on the monitor TV so as not to catch the cable branch line 41 passed through the drain pipe 44a. Control and select the cable branch line so that the required cable is captured only at the branch line, or
If the cable branch line 41 extending from 3a is pulled so as not to loosen, the cable branch line 41 will not be mistakenly captured, and even if it is captured, the arm 33 is turned to the right in FIG. When the cable branch line 41 is pulled by this, the tensioned cable branch line 41 comes out of the gap between the hook 37 and the lever 38, and there is no problem.

FIGS. 9 to 11 show another method of laying the cable branch lines. Two sewage lead wires are respectively passed through the drain pipes 52a and 52b from the waste water reservoirs 51a and 51b (see FIG. 9 and FIG. For the sake of convenience of explanation, a single lead wire 50 is shown in FIG. 10), and it is delivered to the manhole 54a via the sewer pipe 6. Next, in the manhole, connect the lead wires 50 fed from the waste water reservoirs 51a and 51b (Fig. 9), pass the lead wire between the one waste water reservoirs 51a and 51b, and connect the lead wires from the waste water reservoir 51a. Connect the cable branches 41 (FIG. 10). Then, in the manhole 54a, the lead wire is pulled up and the cable branch 41 is passed through the manhole 54a from the sewage reservoir 51a.
One end of the cable is connected to the cable connection box 56 and connected to the cable main line 20. Then, the lead wire coming out from one of the wastewater reservoirs 51a or 51b is pulled up to connect the cable branch line 4
1 is passed between the waste water reservoirs 51a and 51b. Then, the branch line 41 is connected to the connection box 56 to each of the two cables coming out of the waste water reservoir 51a, and the waste water reservoir 51 is connected from the cable connection box 56.
Cable branch 41 is laid in series up to b.

In the same manner, two lead wires from the sewage reservoir 51c and one lead wire from the sewage reservoir 51d are passed through the drain pipes 52c and 52d and delivered to the manhole 54a via the sewer pipe 53. . Then, in the manhole 54a, the lead wires coming out of the wastewater reservoirs 51b and 51c and the wastewater reservoir 5
After connecting the lead wires from 1c and 51d, the lead wires are pulled together to connect between the waste water reservoirs 51b and 51c and the waste water reservoir 5
Lead wires are respectively passed between 1c and 51d. Then, the sewage reservoir 51b or 51c and the sewage reservoir 51c or 51d
After connecting the cable branch to the lead wire from one side,
The lead wire coming out from the other sewage reservoir is pulled up, and a cable branch line is passed between the sewage reservoirs 51b and 51c and between the sewage reservoirs 51c and 51d.

As described above, one cable branch line 41 is laid in series from the cable connection box 56 in the manhole 54a to the dirty water reservoir 51d. The cable branch is laid by connecting the lead wires through the manholes 54a from the respective wastewater reservoirs 51a, 51b, 51c and 51d, connecting the lead wires in the manhole, and connecting the two lead wires at the respective wastewater reservoirs. Connect the cable branch line to the lead wire that comes out of the sewage reservoir 51d, and guide the lead wire sent from the sewage reservoir 51a in the manhole so that the lead wire will not be caught in the drain pipe by each sewage reservoir. While pulling the lead wires from the sewage reservoir 51d, the sewage reservoirs 51c, 51b, 5
It is also possible to pass it through the mahore 54a via 1a, or it is possible to pass the cable branch line directly without using the lead wire.

Next, in the same manner as in the above embodiment, the manhole 5
The work vehicle 25 is fed into the sewer pipe from 4a. Then, while observing the cable branch lines projected by the TV camera 28 with an external monitor camera, the holder 1 is set at appropriate intervals.
3 to the cable holder 16.

[0032]

The present invention is configured as described above and has the following effects. According to the laying method of claim 1, 6 or 7, it is possible to use existing sewer pipes and drainage pipes to open even a small-diameter pipe from the outside without cutting the ground in each home with cables such as optical fibers. It can be installed in a short period of time and at low cost by the remote control of the cable.Because the cable is installed in the space above the pipe where sewage and rainwater do not normally flow, the original function of the sewer pipe and drainage pipe is impaired. There is no.

According to the work vehicle of the second aspect, while observing the inside of the tube on the monitor television, the lifting / lowering means, the turning means and the opening / closing means are remotely controlled from the outside to move the arm up / down and turn the hook. The cable branches can be captured and hooked on the cable holder of the holder. According to the laying method of the third aspect, the plurality of cable branch lines or the other branch lines except one of them can be selected and hung on the cable holder of the holder while observing on the monitor TV.

According to the laying method of the fourth aspect, the cable can be laid in each home directly by the cable branch line and further in series by one cable branch line. According to the laying method of the fifth aspect, the cable branch line can be easily laid by using the lead wire and by passing the lead wire between the waste water reservoirs.

[Brief description of drawings]

FIG. 1 is a side view of a facility vehicle.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the work vehicle.

FIG. 4 is a partial cross-sectional front view of the holder.

FIG. 5 is a diagram showing a state in which a holder is attached.

FIG. 6 is a view showing a state in which a cable main line is supported by a holder on a ceiling of a sewer pipe.

FIG. 7 is a view showing a state in which the holder is displaced from the discharge pipe and attached.

FIG. 8 is a view showing a state in which a cable branch line is attached.

FIG. 9 is a diagram showing a state in which a lead wire is passed through a manhole from a wastewater reservoir.

FIG. 10 is a view showing a state in which a lead wire is passed between the waste water reservoirs and a cable branch line is connected to the end of the lead wire.

FIG. 11 is a view showing a state in which a cable branch line is attached.

[Explanation of symbols]

1 ... Facility vehicle 4, 7, 31,
36 ... Motor 5 ... Support stand 6 ... Sewer pipe 8 ... Screw rod 9 ... Moving stand 10 ... Drill 11 ... Elevating stand 12 ... Holder magazine 13 ... Holder 14: striker 15, 16 ...
・ Cable holder 17 ・ ・ ・ Mounting part 18 ・ ・ ・ Axial hole 19 ・ ・ ・ Vertical groove 20 ・ ・ ・ Cable trunk 21 ・ ・ ・ Adhesive 22 ・ ・ ・ Plunger 23 ・ ・ ・ Drill hole 25 ・ ・ ・ Work Car 27 ... Light 28 ... TV camera 33 ... Arm 34 ... Pinion 35 ... Rack 37 ... Hook 38 ... Lever 39 ... Wires 41, 55 ... Cable branch Line 43a, 43
b, 43c, 43d, 51a, 51b, 51c, 51d
... Sewage tanks 44a, 44b, 44c, 44d, 52a, 52b, 5
2c, 52d ... Drainage pipes 46a, 46b, 54a, 54b ... Manhole 47, 58 ... Cable junction box

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Sanaka 4-6-8 Nishi-ku Commerce and Industry Center Hiroshima City Consec Co., Ltd. (72) Inventor Noriyoshi Hosokawa 4-6-8 Nishi-ku Commerce Center Hiroshima City Co., Ltd. In Consec (72) Inventor Hiroshi Yoshikawa 5 33-11 Shimbashi, Minato-ku, Tokyo Inside Japan Hume Tube Co., Ltd.

Claims (7)

[Claims] 1. A first step of passing a cable trunk line through a sewer pipe, and a facility vehicle inserted in the sewer pipe is run in the pipe.
After drilling a hole in the ceiling of the pipe with a drill installed on a facility car, push in a holder equipped with multiple hook-shaped cable holders with a striker, and then use one of the cable holders to capture the cable trunk and attach the holder. The second step of inserting the part into the drill hole and fixing it, and passing the cable branch line from the sewage sump of each household directly or through the lead wire to the drainage pipe and sewer pipe, and to one of the manholes located on both sides of it. The third step of collecting and connecting to the cable trunk line, running the work vehicle inserted into the sewer pipe, running the work vehicle inside, catching the cable branch line by remotely operating the hook provided on the work vehicle, and another cable holder for the holder A method of laying a cable, which comprises a fourth step of hooking the cable. 2. A work vehicle used in the laying method according to claim 1, wherein an arm supported so as to move up and down and swingable in a circumferential direction of a pipe, a rotating means for rotating the arm, and an arm for moving up and down. It has an elevating means, a hook fixed to the upper end of the arm, a lever for opening and closing the opening of the hook, an opening and closing means for the lever, an illuminating means, and a television camera for photographing a portion illuminated by the illuminating means. Characterize. 3. A first step of passing a cable main line through the sewer pipe, and running a facility vehicle inserted in the sewer pipe into the pipe.
After drilling a hole in the ceiling of the pipe with a drill installed on a facility car, push in a holder equipped with multiple hook-shaped cable holders with a striker, and then use one of the cable holders to capture the cable trunk and attach the holder. The second step of inserting the part into the drill hole and fixing it, and passing the cable branch line from the sewage sump of each household directly or through the lead wire to the drainage pipe and sewer pipe, and to one of the manholes located on both sides of it. The third step of collecting and connecting to the cable trunk line, running the work vehicle inserted into the sewer pipe, running the work vehicle inside, catching the cable branch line by remotely operating the hook provided on the work vehicle, and another cable holder for the holder In the method of laying a cable comprising a fourth step of hooking on an arm, as a working vehicle, an arm that is lifted and supported so as to be swingable in the circumferential direction of the pipe and the arm is rotated in the circumferential direction of the pipe. And turning means for a lifting means for raising and lowering the arm, and hook secured to the arm top end, a lever for closing openably the opening of the hook, and opening and closing means of the lever,
Using a work vehicle having a lighting means and a TV camera for photographing a portion illuminated by the lighting means, while observing the cable branch line photographed by the TV camera on an external monitor television, a lifting means, a turning means, and A method for laying a cable, characterized in that the opening / closing means is remotely controlled to move the arm up and down and move left and right in the circumferential direction of the pipe, and the cable branch is captured by a hook and hooked on the cable holder of the holder. 4. A first step of passing a cable main line through the sewer pipe, and running a facility vehicle inserted in the sewer pipe into the pipe.
After drilling a hole in the ceiling of the pipe with a drill installed on a facility car, push in a holder equipped with multiple hook-shaped cable holders with a striker, and then use one of the cable holders to capture the cable trunk and attach the holder. The second step of inserting the part into the drill hole and fixing it, and passing the cable branch line from the sewage sump of each home through the drainage pipe and the sewer pipe, respectively, to one of the manholes located on both sides of it. A method of laying a cable, comprising a third step of feeding and a fourth step of connecting the cable trunk and the cable branch in the manhole and selecting and connecting the cable branches to be connected. 5. A first step of passing a cable main line through the sewer pipe, and running a facility vehicle inserted in the sewer pipe into the pipe.
After drilling a hole in the ceiling of the pipe with a drill installed on a facility car, push in a holder equipped with multiple hook-shaped cable holders with a striker, and then use one of the cable holders to capture the cable trunk and attach the holder. The second step of inserting the part into the drill hole and fixing it, and the third step of passing the lead wire from the sewage sump of each household through the drainage pipe and the sewer pipe and sending it into one of the manholes located on both sides of the drainage pipe and the sewer pipe. , The fourth step of selecting and connecting the lead wires to be connected in the manhole, and connecting the cable branch wires to each end of the connected lead wires, and pulling the lead wires together to form a space between the wastewater reservoirs. The fifth step of passing the cable branch line,
Sixth connecting cable branch line comrades in each waste water reservoir
A method for laying a cable, which comprises the steps of: 6. The cable laying method according to claim 1, wherein the cable trunk line is laid directly from the manhole to the manhole or by passing a lead wire. 7. Instead of passing the cable trunk line through the sewer pipe directly or by a lead wire and then fixing the holder to the pipe ceiling by capturing the cable trunk line with a cable holder, first the facility vehicle runs in the pipe. Fix the holder with multiple cable retainers on the pipe ceiling at appropriate intervals, then pass the cable trunk through the pipe, and then remotely operate the hook provided on the work vehicle to hold the cable trunk in the holder cable. The cable laying method according to claim 6, wherein the cable is laid by being hooked on a tool.