KR20020097214A - Cable holder, cable laying device, and moving method therefor - Google Patents

Abstract

It is a cable holder that installs communication optical fiber inserted into sewer pipe in the ceiling of the pipe. The cable holder 31 is made of resin and is formed in an inverted U-shape to open downward. The cable holder 31 protrudes from the cable holder 33 and the cable holder 33 formed with the claw 32 at the inlet. Plunger pin 39 is inserted into the vertical hole in which the pressure-sensitive adhesive is filled, and the attachment portion 34 is attached to the drill hole drilled in the pipe ceiling of the sewer pipe 1. Is pressed, the plunger pin 39 is pushed in and the adhesive overflows so that the cable holder 31 is adhesively fixed to the tube ceiling. In addition, the cable holder 33 integrally forms small cable holders 34 on both sides thereof, and allows the cable holders 33 and 34 to hold cables of different types. .

Description

Cable holder and cable laying device and moving method {CABLE HOLDER, CABLE LAYING DEVICE, AND MOVING METHOD THEREFOR}

Recently, with the rapid development of the information society, the optical fiber network that can accurately transmit a large amount of information without being affected by electrical interference as a communication network has been covered. In the city, such a communication network is often installed by using existing sewer pipes, and when installed in sewer pipes, dust is attached to a cable made of optical fiber or dust is accumulated so as not to impede flow. The cable is usually fixedly supported by a cable holder on the tube ceiling.

The cable laying work is to fix the cable that is inserted into the pipe by a person when the sewer pipe is a main line and has a relatively large diameter. As end users, such as offices and homes, are maintained, the diameter of the pipes is also small, and when the size of the pipe cannot be reached, a cable laying robot is used for cable laying.

Japanese Patent Application Laid-Open No. 3-50483 has a work vehicle which is inserted into a sewer pipe from a manhole as such a robot and travels inside the pipe by remote control from the outside, and the cable holder is fitted to the ceiling of the sewer pipe to the work car. A pair of drills for drilling holes to be inserted, a cartridge for storing a U-shaped cable holder for fixing the cable to the tube ceiling, and a cable holder stored in the cartridge are struck upwards one by one, and the tube ceiling is drilled by a drill. The provision of the striker which press-fits into the hole perforated is disclosed.

In addition, as the cable holder, as disclosed in Japanese Patent Laid-Open No. 8-103012, it has a hook-shaped cable holder having a side facing up and down, and a vertical hole having a bottom is formed in an attachment portion that is pressed into the drill hole. The adhesive is filled into the hole, the plunger pin is inserted, the plunger pin tip protrudes from the attachment portion, and the attachment portion is press-fitted into the drill hole drilled in the wall of the pipe, and extruded from the attachment portion by the press-fit of the plunger pin. As disclosed in the cable holder and the Japanese Patent Application Laid-Open No. 2000-261924 and the Japanese Patent Laid-Open No. 2001-28819, which are adhesively fixed by means of an adhesive, an inverted U-shape opening downwards is formed, and the upper side thereof is inferior to the wall of the tube. Cable holders having a claw that is misaligned or buried, and which protrude inwardly into the opening and are attached to the sewer pipe in advance are known. The fixed support of the tablet is carried out by pressing and securing the cable captured by the cable catcher from the opening to the cable holder.

Among the cable holders described above, the cable holder press-fitted or fixed to the drill hole can be attached to an existing sewer pipe. In the case of a cable holder having a plurality of hook-shaped cable holders above and below, a new cable is added and attached. Alternatively, different types of cables, such as trunk and branch lines, may be attached to separate cable holders, but the gap between the wall of the pipe and the cable holder is narrow, making it difficult to hook the cables, There is a risk of damaging the cable when a shear force in the radial direction is added to the coil. The cable holder opening downward has the advantage of not damaging the cable because the cable can be separated from the opening even when a shear force in the radial direction is applied to the pipe due to an earthquake or the like, but such a cable holder is a conventional cable holder In addition, they are not attached to each other or divided into different cables. Therefore, when adding and attaching a new cable, it is necessary to attach a new cable holder to the wall in the tube, and if a different type of cable is to be separately attached and attached separately, it is necessary to attach a plurality of cable holders.

If the cable holder has a size capable of inserting a plurality of cables, new cables can be added and attached, but this causes the following new problems. When the new cable is to be inserted, the inserted cable is often located above the opening, so that the inserted cable interferes with the insertion of the new cable, making insertion difficult.

As for the cable catcher, it is desired to be able to securely capture the cable and insert it into the cable holder. By using a cable catcher as disclosed in Japanese Patent Laid-Open No. 2001-28819, the cable can be securely captured by opening and closing of the hand, and the position can be positioned at the insertion position into the cable holder. When the cable is inserted into the holder from the opening, the cable is lifted up on the mountain with the cable catcher at its vertex. In particular, when the cable is loose, the cable is lifted up by the cable catcher and sloped downward toward the mountain. The gradient becomes sharp and insertion into the cable holder becomes difficult.

In addition, as for the work vehicle used when laying the cable, the conventional work vehicle is designed to be driven by rotationally driving the drive wheels by a motor whose movement in the pipe is remotely controlled from outside the pipe. If the wall in the pipe is slippery due to the adhesion of mud like an existing sewer pipe, there is a problem that it is slippery and cannot be moved reliably in the pipe.

An object of the present invention is to provide a cable holder having a plurality of cable holding portions that open downward, and which can be attached to an existing sewer pipe or the like by one attachment operation.

Another object of the present invention is to provide a cable laying apparatus which allows a cable holder into which a plurality of cables can be inserted, so that insertion of a new cable can be performed without interfering with a cable that has already been inserted. It is an object of the present invention to provide a cable laying apparatus which can reliably insert a cable into a cable holder.

Another object of the present invention is to provide a moving method capable of reliably moving a cable laying work vehicle even when the gradient of the tube is sharp and the inner wall of the tube is slippery and slippery.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable holder for fixing and supporting a cable such as an optical fiber introduced into a pipe such as a sewer pipe to a wall of a pipe, a laying device for fixing and supporting a cable to a wall of a pipe by a cable holder, and a method of moving the same.

1 is a side view of a cable laying apparatus;

2 is a front view of the cable holder according to the present invention.

3 is a front view of another form of a cable holder according to the present invention;

4 is a front view of another form of a cable holder according to the present invention;

FIG. 5 is a plan view of the anchor of the cable holder shown in FIG. 4; FIG.

6 is an enlarged front view of the main portion of the anchor of the cable holder shown in FIG. 4;

7 is a front view of another example of a cable holder.

8 is a side view of the work vehicle for laying cables according to the present invention.

Fig. 9 shows the form when the cable catcher picks up the cable;

Fig. 10 is a diagram showing the form when the cable catcher catches the cable;

Fig. 11 is a side view of a cable laying work vehicle moving in the tube by towing of color tone;

Fig. 12 is a front view of the work vehicle for laying cables shown in Fig. 11.

It is a schematic diagram which shows the form at the time of towing a work vehicle by hue.

Fig. 14 is a sectional view of a control cable constituting the color tone.

※ Explanation of code for main part of drawing

31: cable holder

32: claw

33: cable holder

34: cable holder

36: drill hole

37: attachment part

38: split groove

39: plunger pin

In the first aspect of the cable holder according to the present invention, a substantially U-shaped cable holding portion which opens downward in the holding metal member and pinches the opening portion is provided in a plurality of transverse directions. An anchor projecting upward from the retaining metal member has an attachment portion press-fitted into a drill hole drilled into the inner wall of a sewer pipe or the like, and an adhesive is filled in a bottomed vertical hole formed from above the attachment portion. At the same time, when the plunger pin protrudes to its tip and presses the attachment into the drill hole, the plunger pin is pushed into the longitudinal hole, whereby the attachment portion is adhesively fixed with the adhesive overflowing into the drill hole.

According to the present invention, the cable holder having a plurality of cable holders which are opened downward can be fixed to the pipe wall only by pressing the attachment portion of the anchor into the drill hole drilled into the pipe wall.

In the second aspect, the retaining metal member is attached to the anchor by being rotated and stopped by the rotation stop means, and the cable retaining portion is always held in a constant direction and position.

When the cable catcher catches the cable drawn into the wall of the pipe, lifts it and inserts it into the cable holder, if the captured cable is positioned, the cable catcher can be inserted into the opening of the cable holder simply by pushing it up. It can be done.

In order to attach the retaining metal member to the anchor by rotating stop, for example, one of the anchor and the retaining metal member forms a projection such as a pin, and a recess or a hole in which the projection is coupled to the other, or a cross section in the anchor. A key groove which forms a polygonal part such as a quadrangle and at the same time makes a hole in the retaining member to which the polygonal part is coupled as a polygon, or attaches a key to the anchor and at the same time the key is coupled to the hole of the retaining member to which the anchor is engaged. It is good to form.

In the third aspect, a claw made of a spring body having a claw tip formed in a cross-sectional inverted V shape on both sides of the anchor is formed to protrude upwardly inclined, and a coupling hole is formed in which the claw is clamped to the retaining metal member. At the time of engagement, the end of the claw touches the hole edges on both sides of the engagement hole, and when the anchor is pushed in, the hole edge slides in the direction where the claw is pushed inwardly by the hole edge. When the claw reaches the bottom of the claw, the claw is restored and opened outward and fixed to the hole edge.

According to the cable holder of the present invention, in which the retaining member is connected to the anchor, the claws on both sides of the anchor are extended and opened so that the end of the claw is fixed to the hole edge. do.

In the fourth aspect, the plurality of cable holders that are opened downward are integrally formed with the resin attachment portion protruding from the resin holder having the crosswise direction. In the attachment portion, the adhesive is filled into the bottomed vertical hole formed from above, similarly to the attachment portion of the cable holder described above, and the plunger pin is inserted to protrude its tip, and the attachment portion is inserted into the inner wall of the sewer pipe or the like. When press-fitted into the drill hole drilled in, the plunger pin is press-fitted, and the attachment part is adhesively fixed with the adhesive overflowing in the drill hole.

The cable holder of the present invention is entirely made of resin, and can be molded integrally, so that the cable holder can be obtained at low cost.

A fifth feature relates to a cable laying apparatus, wherein a rod is supported by a work vehicle traveling in a pipe such as a sewer pipe so as to be lifted and lowered. The rod has a bed that supports the cable from below at the upper end, and a cable catcher which opens and closes in the lateral direction and catches the cable on the bed when closed, and the bed is formed in a mountain shape, and when the cable catcher is closed. The cable is then positioned and maintained at the top. Then, the rod is raised, and thus the cable caught and supported by the cable catcher is lifted and press-inserted from the opening into the cable holder attached to the wall in the tube.

According to the present invention, since the cable already inserted into the cable holder is divided left and right at the inclined portions on both sides by the rise of the stand, the cable on the top is inserted without being disturbed by the inserted cable.

The sixth feature relates to a cable laying apparatus which can reliably insert a cable into a cable holder, wherein a pair of rods are disposed at appropriate intervals in the longitudinal direction of the pipe in a work vehicle traveling in a pipe such as a sewer pipe. Each rod is movable up and down, and has a stage for supporting the cable from below, and a cable catcher for catching the cable supported on the stage when the rod is opened and closed in the lateral direction. When the cable catcher of each rod is closed and the cable is caught on the table, the cables between the cable catchers are roughly supported horizontally, and when both arms are raised, the cables between the cable catchers are lifted in the approximately horizontal state from the opening in the cable holder. It is press-fitted.

By lifting the cable in a horizontal state and inserting it into the cable holder, insertion into the cable holder can be reliably performed.

The stand provided in each cable catcher may be separately attached to each cable catcher, and one stand may be lengthened, and the cable catcher may be provided at appropriate distances between the front and rear ends of the stand or the middle of the stand.

The seventh feature relates to a cable laying apparatus having the same features as the sixth feature, wherein a cable support for supporting a rod and a cable from below is supported on a work vehicle that runs in a pipe such as a sewer pipe. The rod has a stage for supporting the cable from below at the distal end, and a cable catcher for catching the cable supported on the stage when opened and closed laterally, and closing the cable catcher to capture the cable on the stage. The cable is supported approximately horizontally by the stand of the catcher and the cable support, and when the rod and the cable support are raised, the cable between the cable catcher and the cable support is lifted in the approximately horizontal state and press-inserted from the opening into the cable holder.

The cable support may be capable of lifting up and down independently from the rod, but is preferably connected to the rod to move up and down with the rod. As a result, the lifting mechanism becomes common and the structure is simplified.

An eighth feature relates to a cable laying device having both the above-described fifth feature and the sixth or seventh feature, wherein the cable laying device having the fifth feature includes: a pair of rods having a stand and a cable catcher at the tip end thereof. Is provided at an appropriate interval in the longitudinal direction, or a cable support for supporting the cable from below is provided to be capable of lifting up and down at an appropriate interval in the longitudinal direction of the tube with the rod before and after the rod.

A ninth feature relates to a method of moving in a pipe of a work vehicle for moving a pipe such as a sewer pipe and attaching a cable holder for fixing and holding the cable introduced into the pipe to the wall of the pipe. A color tone is connected to each other, and one of the color tones extending to the front and the rear of the work vehicle is pulled out while the other is pulled out of the outside to move the work vehicle forward or backward.

In order to attach the cable holder to the inner wall of the pipe, for example, a method of drilling a hole in the inner wall of the pipe by using a drill provided in the work vehicle as described above, and then pressing the attachment part of the cable holder into the drill hole to fix it with an adhesive, the pipe In the case of the thermoplastic resin, a method of heating the cable holder, pressing the tube holder into the inner wall of the tube, and fusion fixing can be used.

A tenth feature relates to a method of moving in a pipe of a work vehicle that moves inside a pipe, such as a sewer pipe, captures a cable introduced into the pipe, and fixes and attaches the cable to a cable holder fixed to a wall of the pipe. A color tone is connected to the vehicle, and one of the color tones extending toward the front and the rear of the vehicle is pulled out, and the other side is pulled from the outside to move the vehicle forward or backward.

According to each of the above inventions, the amount of towing of the color tone corresponds to the amount of movement of the work vehicle, and the inside of the tube can be reliably moved without causing the work vehicle to slip by the towing of the color tone.

As a color tone used by each said invention, a wire, a rope, a chain, etc. are used, for example. Such color tone may be such that the middle part may be connected to the work vehicle, or two color tones may be used to connect the front and rear of the work vehicle, respectively. Since the work vehicle is provided with a control cable connected to a control device outside the tube, the color tone extending to either front or rear of the work vehicle is preferably constituted by the control cable and integrated. If the color tone and the control cable are separately provided, both of them become entangled with each other during traveling, while integrating them solves this problem.

An eleventh feature is to pull the control cable connecting the work vehicle and the control device outside the tube to advance the work vehicle. In other words, the cable laying work vehicle connected to the control device outside the pipe and the cable holder for fixing and supporting the cable drawn into the pipe such as the sewer pipe to the wall of the pipe is opposite to the control cable. The control cable is a cable with a high tensile strength, and the control cable is pulled forward or retracted by pulling the color tone or the control cable.

Also in this invention, the same thing as the above-mentioned is used as a method of attaching a color tone or a cable holder to a wall in a pipe.

The twelfth feature is that the connection position for the work vehicle of the above-described color tone coincides with the center position of the work vehicle, or is provided near the center position, preferably below the center position.

According to the present invention, when the work vehicle is towed by the color tone, the fall of the work vehicle is prevented, and the movement of the work vehicle can be smoothly and reliably performed even if the inner wall of the pipe is slippery and slippery.

Other features and effects of the present invention will be more clearly understood by those skilled in the art based on the description of the following examples. In addition, the technical scope of this invention is not limited to the Example and drawing.

FIG. 1 shows a work vehicle 2 traveling in the sewer pipe 1 by remote control from outside the tube, and the work vehicle 2 is similar to the apparatus disclosed in Japanese Patent Laid-Open No. 63-7121. The drill 3 capable of lifting and lowering a hole in the tube ceiling, the cartridge 4 storing the cable holder described later, and the cable holder extruded from the cartridge 4 and formed by the drill 3. The cable holder driving apparatus 5 which press-fits the attachment part of a cable holder to a hole, and the monitor camera 6 which image | photographs the tube ceiling part illuminated by the light (not shown) are mounted.

The cable holder 8 shown in FIG. 2 is a retaining member 11 having a cable retaining portion 9 on both the right and left sides, and an anchor 12 attaching the retaining fitting member 11 to the sewer pipe at the center. The holding metal member 11 is composed of an outer member 11a and an inner member 11b having an approximately C-shape, and both members 11a and 11b are connected by an anchor 12 at the center thereof. have.

The anchor 12 is made of resin, and has a threaded portion 12b having a split groove (not shown) at the top and a vertical hole (not shown) having a support groove 12a of the retaining metal member 11 at an intermediate portion thereof. The lower portion of the support portion 12a has a circular cross section, and the upper portion has a rectangular cross section. And the upper part of a square cross section is inserted in the rectangular hole formed in the outer member 11a and the inner member 11b, and both members 11a and 11b are rotated and attached to the anchor 12 together.

Although not shown in the vertical hole at the top of the anchor, the pressure-sensitive adhesive is filled from the vertical hole when the pressure-sensitive adhesive is filled and the plunger pin 13 protrudes and is inserted into the tip.

In the cable holder 15 shown in Fig. 3, a plurality of cable holders 16, which are open downward and form an ohm (Ohm) type with the openings closed, are attached to the plate-shaped connecting member 17 at regular intervals. A rectangular hole (not shown) is formed in the center of the connecting member 17 between the cable holders.

The anchor 18 has the same structure as the anchor 12, and the connecting member 17 is rotated and supported similarly to the retaining member 11. In the figure, reference numeral 19 denotes the same plunger pin as the plunger pin 13.

The cable holder 21 shown in FIG. 4 connects a pair of cable holders 22 of an Ω type having a downward opening and closing the opening by a connecting member 23, and a central portion of the connecting member 23. As shown in FIG. As shown in FIG. 5, a hole including a circular portion 25 to which the upper portion of the anchor 24 is coupled, and a coupling portion 26 connected to the circular portion 25 on both left and right sides of the circular portion 25 is formed. Forming.

The anchor 24 is made of resin, and the upper part joined to the circular part 25 has a small diameter and forms an end with the lower part. The upper side has a split groove (not shown), a screw 27 is dug in the outer circumference, and a plunger pin 28 is inserted in the bottom vertical hole formed from above, and the adhesive is filled.

As shown in FIG. 6, a pair of claws 29 protrude upward and obliquely on the upper end surface of the lower part of the anchor which forms an end with the upper part, and are symmetrical.

The claw 29 has flexibility, and the upper end forms a hook shape having an inverted cross-sectional V-shape, inserts the upper part of the anchor into the circular portion 25 of the hole formed in the connecting member 23, and the engaging portion 26. Is pressed in a direction coinciding with the claw 29, the claw 29 is pushed inward by the hole edge of the engaging portion 26, and when the hole edge slides the top of the claw to reach below the upper end of the hook shape. The claw 29 is restored and extended outwardly, and is fixed to the hole edge to stop the rotation of the connecting member 23 and the release stop.

The cable holder 31 shown in FIG. 7 is made of resin, has a substantially U-shape opening downward, and has a cable holder 33 in which the claws 32 are protruded inward from the opening, and both sides thereof. A drill hole formed integrally with the cable holder 33 and having a small size in the same shape as the cable holder 33, protruding from the cable holder 33, and drilled in the pipe ceiling of the sewer pipe 1; 36, which is press-fitted into the attachment portion 37, and the attachment portion 37, like the anchors 12, 18, and 24, has a bottomed vertical hole (not shown) and a division groove 38. The pressure-sensitive adhesive is filled in the vertical hole, and the plunger pin 39 is inserted.

FIG. 8 shows a work vehicle 41 traveling in the sewer pipe 1 by remote control from outside the tube, and the work vehicle 41 is spaced at regular intervals in the longitudinal direction of the pipe. A pair of rods 42 supported by the air cylinder (not shown) to move up and down by an air cylinder (not shown), a light 43 illuminating the front of the tube, a light 44 illuminating the tube ceiling, and a light 44. A monitor camera 45 for capturing the illuminated tube ceiling is mounted, and the rod 42 is provided with a cable catcher 46 which can be opened and closed as shown in FIG. . The cable catcher 46 has a pair of hands 47 which are opened and closed by an opening / closing mechanism (not shown) made of an air cylinder as disclosed in Japanese Patent Laid-Open No. 2001-28819. After receiving the cable 48 drawn into the tube as shown in FIG. 9 by opening the hand 47 and closing the hand 47 by the opening / closing mechanism, the cable 48 has a large center as shown in FIG. 10. Positioned at the top of the is maintained.

If each pair of cable catchers 46 holds the cable 48 at the top of the center as shown in FIG. 10, the cable 48 is supported approximately horizontally between the cable catchers. Thereafter, when the rod 42 is further raised by a certain amount, the cable 48 held at the top of the center is press-fitted from the opening 49a to the cable holder 49 attached to the tube ceiling and inserted into the cable holder. At this time, the mount-shaped stand divides the cable 48 inserted into the cable holder from side to side, so as not to interfere with the insertion of the new cable 48.

Cable laying into the sewer pipe is carried out as follows.

First, the work vehicle 2 shown in FIG. 1 is inserted into the sewer pipe 1 from the manhole, and the inside of the pipe is moved by remote control. And it moves and stops by a fixed amount, and makes a hole with a drill 3 in a pipe ceiling part at the time of stop. After drilling, the drill 3 is retracted, the cable holder 49 extruded from the cartridge 4, for example as shown in FIG. 10, with a striker 5, and the anchor 12 is removed. Press in the drill hole to attach it.

The anchor 12 is attached to the ceiling of the sewer pipe at appropriate intervals as described above, and then the lead wire is passed from the manhole into the sewer pipe 1, the cable is connected to the lead wire end, and the cable is pulled out to pull the lead wire. Pass it inside.

Thereafter, the work vehicle 41 shown in Fig. 8 is similarly inserted into the sewer pipe from the manhole, and the inside of the pipe is moved by remote control. And the ceiling part of the pipe | tube shined with the light 44 is image | photographed with the monitor camera 45, and it monitors it with the monitor television outside a tube. When the cable holder 49 attached to the tube ceiling is confirmed by the monitor television screen, the work vehicle 41 is stopped once. Thereafter, in the state where the hand 47 of the cable catcher 46 shown in FIG. 9 is opened, the pair of front and rear cable catchers 46 are respectively raised by a predetermined amount, and the cable 48 drawn into the pipe is lifted by each cable catcher ( By hand 47, respectively. When the monitor 47 confirms that the hand 47 has received the cable 48, it closes the hand 47 of each cable catcher 46, captures the cable 48, and locates the top of the rod 42. The decision is retained (FIG. 10).

The cable 48 is supported approximately horizontally between the cable catchers, and when the cable catcher 46 is further raised as it is, it is pressed into the cable holder from the opening of the cable holder 49 attached to the tube ceiling and inserted. When the monitor 48 in the tube confirms that the cable 48 is inserted into the cable holder, the hand 47 of the cable catcher 46 is opened and lowered to release the cable. Then, the work vehicle 41 is moved again, and the above operation is repeated.

The work vehicle 51 shown in FIG. 11 corresponds to the work vehicle 2 or the work vehicle 41 mentioned above, and the wires 52 and 53 which are color tone before and after are connected. These wires 52 and 53 are connected to the work vehicle 51 below the center of the work vehicle 51, and when the work vehicle 51 is moved into the sewer pipe, as shown in FIG. The guide pulley 54 is arranged below, and the wires 52 and 53 and the control cable 55 run together to the guide pulley 54. Then, tension is applied to one side of the wires 52 and 53 to draw and the other side is moved to move the work vehicle 51 in the pipe.

As the wires 52 and 53 are connected below the center position to the work vehicle 51 as described above, the work vehicle 51 is pulled in a state where tension is applied from both sides by the wires 52 and 53. In this case, the work vehicle 51 does not fall in a state in which the lower part of the tube is pressed down, and moves smoothly, so that the inner wall of the tube is slippery or the tube is inclined so that it can move without slipping.

In another embodiment, the control cable 55 is configured to have the same tensile strength as the wires 52, 53, and the movement of the work vehicle 51 is performed by the pulling of the control cable 55. In this case, the wire in the same direction as the control cable 55 can be omitted from the pair of wires 52 and 53.

Fig. 14 shows an example of a control cable having the same tensile strength as the wires 52 and 53, in which a fiber rope 57 braided with fibers is disposed together with the tube 58, the signal line 59, and the coaxial line 60. The periphery is covered with the polyurethane resin 61.

Claims (12)

A cable holder for fixing and supporting a cable such as an optical fiber introduced into a pipe, such as a sewer pipe, to a wall in a pipe, comprising: a holding iron member having a plurality of cable holding portions that are opened downward; and a holding iron member between the cable holding portions. An anchor having an attachment portion press-fitted into a drill hole drilled through the inner wall of the pipe, wherein a vertical hole having a bottom formed from above in the attachment portion of the anchor is filled with an adhesive, and a plunger pin protrudes its tip. Cable holder, characterized in that the insertion. The method of claim 1, The holding metal member is a cable holder attached to the anchor by rotation stop by the rotation stop means. The method of claim 2, A cable holder, wherein the rotation stop means is a claw made of a spring body having a claw end formed in a cross-sectional inverted V shape on both sides of the anchor, and a coupling hole formed in the retaining metal member, and the claw being retracted and engaged. A cable holder for fixing and supporting cables such as optical fibers introduced into a pipe, such as a sewer pipe, to a wall in a pipe, wherein a plurality of cable holders opening downwardly are integrally formed so as to protrude on the holder. And a resin attachment portion press-fitted into the drill hole drilled in the inner wall of the pipe, wherein the bottom-shaped vertical hole formed from above is filled with an adhesive, and a plunger pin protrudes from the tip thereof. Cable holder made. A work vehicle capable of traveling in a pipe such as a sewer pipe, a rod supported by the work vehicle so as to be liftable and supporting a cable from below, and a rod upper end portion which is installed in a transverse direction so as to be opened and closed and closed. And a cable catcher which catches the cable on the stage at the time, and after the cable is captured by the cable catcher, ascends while supporting the cable on the stage, and is attached to the cable holder attached downward with an opening in the pipe wall. A cable laying apparatus for press-inserting from an opening portion, wherein the stage is formed in a mountain shape, and the cable is placed and held on the top portion when the cable catcher is closed. When a work vehicle capable of traveling in a pipe such as a sewer pipe and a rod supported by the work vehicle so as to be lifted and lowered and supporting the cable from the lower side are provided to be opened and closed in the transverse direction at the rod upper end, and closed. And a cable catcher for capturing the cable on the stage, the cable catcher catches the cable, and then lifts the cable in the state in which the cable is supported on the stage, and opens the cable holder attached downwardly to the inner wall of the tube. In the cable laying apparatus which press-fits and inserts from the said cable laying apparatus, The cable laying apparatus characterized by installing the pair which supports the cable and the cable catcher which catches a cable at appropriate intervals in the longitudinal direction of a pipe | tube. A work vehicle capable of traveling in a pipe such as a sewer pipe, a rod supported by the work vehicle so as to be liftable and supporting a cable from below, and a rod upper end portion which is installed in a transverse direction so as to be opened and closed and closed. And a cable catcher which catches the cable on the stage at the time, and after the cable is captured by the cable catcher, ascends while supporting the cable on the stage, and is attached to the cable holder attached downward with an opening in the pipe wall. A cable laying apparatus for press-inserting from an opening portion, wherein the cable laying means for supporting the cable from below is installed on the work vehicle so as to be able to be elevated up and down with the rod at an appropriate interval in the longitudinal direction of the pipe. . The method of claim 5, A cable for installing the pair of rods having a stand and a cable catcher at the tip end of the work vehicle at an appropriate interval in the longitudinal direction of the tube, or a cable for supporting the cable from the lower side at an appropriate interval in the longitudinal direction of the tube. A cable laying device, characterized in that the support is installed to be elevated. In the above-mentioned method of moving a pipe in a work vehicle in which a cable holder for moving a pipe such as a sewer pipe and fixedly supporting the cable drawn into the pipe on the wall of the pipe is attached to the wall of the pipe. Moving the vehicle to move forward or backward by pulling the other from outside the tube while feeding one of the tones extending to the front and the rear of the vehicle. In the work method of the work vehicle which moves the inside of a sewer pipe, catches the cable drawn in the said pipe, hangs and fixes to the cable holder fixed to the wall in a pipe, and installs it, connects a color tone to a work vehicle, A moving method of moving a work vehicle, wherein the work vehicle is advanced or retracted by pulling the other from outside the tube while feeding out one of the color tones extending toward the front and the rear of the vehicle. The method according to claim 9 or 10, A method of moving a work vehicle in which the work cable is moved forward or backward by increasing the tensile strength of the control cable connected to the work vehicle so as to omit the color tone on the same side as the control cable and towing the color tone or the control cable opposite the control cable. The method according to claim 9 or 10, A moving method of moving a work vehicle, wherein the color tone is connected to the work vehicle at or near the center position of the work vehicle.