JPH11201366A - Wire passing method through pipeline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage to an inserted linear body in a wire passing method through pipeline, by which the linear body is inserted and arranged in an existing pipeline. SOLUTION: After one end of a traction wire 4 is inserted from an opening part 1a of a pipeline 1, it is pulled out from the other opening part 1b, so that the traction wire 4 is passed through the pipeline 1. One end part of a flexible tubular guide body 5, in which a guide path for the linear body 3 can be formed, is connected to the passed traction wire 4, and the tubular guide body 5 is inserted into the pipeline 1 while being towed via the traction wire 4. After the linear body 3 is inserted into the pipeline 1 through the passed tubular guide body 5, the tubular guide body 5 is pulled out from the pipeline 1 with the linear body 3 left in the pipeline 1, and consequently, the wire is passed through the pipeline 1. Alternatively, the linear body 3 is passed through the inside of the pipeline 1 while being held in a tubular covering body similar to the tubular guide body 5, and the tubular covering body is pulled out from the inside of the pipeline 1 with the linear body 3 passed and arranged in the pipeline 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an existing pipe,
For example, the present invention relates to a method of passing a wire such as an electric wire or a communication line through a conduit in which a wire is inserted.

[0002]

2. Description of the Related Art As a conventional method of connecting a cable to a pipeline, a towing line, which is usually referred to as a cable, is inserted from one end into an existing pipe, and an electric wire, a communication line or the like is directly passed through the cable. In a state where the linear members are connected, the wire tool is pulled out from the pipe, and the linear member is inserted and arranged in the pipe via the towing line.

[0003]

In the above-described conventional wiring method, for example, when a linear body such as a communication line is inserted and arranged through a bent portion of an existing pipe, a wiring tool and the linear body are disposed. When passing through the bent portion, the frictional resistance due to being bent in accordance with the bent portion increases, and if the number of the bent portions increases, the resistance may not allow the linear body to be pulled in. There is a problem that there is. In addition, there is also a problem that the linear body itself is damaged, for example, the coating of an electric wire, a communication line, or the like drawn in as the linear body is damaged by the frictional resistance. Further, when the optical cable is drawn in as the linear body, the optical fiber may be cut due to excessive pulling force and bending.

[0004] Therefore, a method of connecting a pipe to a pipe according to the present invention is to provide means for preventing damage to a linear body to be inserted and arranged.

[0005]

[Means for Solving the Problems] The feature of the method for connecting a conduit to a pipe according to the present invention according to claim 1 is that one end of a towing line is inserted from one opening of the pipe. After that, the towing line is pulled out from the other opening, the towing line is inserted into the pipe, and one end of a flexible tubular derivative capable of forming a guideway of a linear body is inserted into the towing line. After being connected to a cable, the tubular derivative is introduced into the pipe while being pulled through the towing cable, and the linear body is inserted through the introduced tubular derivative into the pipe, and then the wire is inserted. The present invention is characterized in that the tubular derivative is pulled out from the inside of the pipe in a state where the shape is disposed in the pipe. Preferably, the tubular derivative is flexible with respect to bending. Note that, in order to insert and arrange the linear body in the tubular derivative, a tow line is inserted into the introduced tubular derivative, the tow line is connected to the inserted tow line, and the wire is connected through the tow line. The tubular body can be pulled and placed in the tubular derivative (corresponding to claim 2), and the use of a flexible resin tube as the tubular derivative is effective (corresponding to claim 3). Also, the use of a bellows tube as the tubular derivative is effective (corresponding to claim 4), and the use of a braid as the tubular derivative is also effective.

[0006] Further, a feature of the method for connecting a pipe to a pipe according to the present invention according to claim 6 is that, after inserting one end of the tow line from one opening of the pipe, pulling out from the other opening, In a state in which the tow line is inserted into the pipe, and the tubular covering capable of surrounding the outer periphery of the linear body and the linear body surrounded in the tubular covering are connected to the tow line that has been inserted, The tubular covering body is towed together with the linear body via a towing line and introduced into the pipe, and the tubular covering body is pulled out of the pipe while the linear body is inserted and arranged in the piping. On the point. It is preferable that the tubular covering is flexible with respect to bending and has small elongation deformation due to traction. It is effective to use a flexible resin tube as the tubular covering (corresponding to claim 7), and it is also effective to use a bellows tube as the tubular covering (claim 8).
It is also effective to use a braid as the tubular covering (corresponding to claim 9).

[Function and Effect of Characteristic Configuration] The above-mentioned claim 1
According to the method for connecting a pipe to a pipe according to the invention described in (1), since the linear body is drawn into the tubular derivative, it is possible to prevent the linear body from being damaged during the drawing. In other words, if one end is inserted from one opening of the pipe, then pulled out from the other opening, and one end of the flexible tubular derivative is connected to the towing line inserted into the pipe and towed, Since the tubular derivative is flexible, it can be easily introduced into the pipe. Here, if the tubular derivative is made of a slippery material that is capable of forming a guideway of a linear body inside, for example, a polyethylene pipe, and is flexible, the pipe has a large number of bent portions, and the pipe is smoothly formed. Can be introduced into piping. Then, if the linear body is inserted into the pipe through the introduced tubular derivative, the linear body is smoothly guided in the pipe, and at the bent portion of the pipe, the pipe inner surface is also provided. Since the pipe is inserted without contact, even if the bent part of the pipe is connected by a screw-type bent pipe joint, the linear body does not contact the pipe end of the pipe connection part, and the Even if the step is formed in the pipe by being connected with a joint or the like, there is no possibility of damage. After the linear body is inserted and arranged in this manner, if the tubular derivative is pulled out of the pipe in a state where the linear body is arranged in the pipe, the linear body is easily and smoothly inserted into the existing pipe without damaging the linear body. Can be inserted and arranged. According to the method for connecting a pipe to a pipe according to the second aspect of the present invention, the linear body can be more easily and smoothly inserted through the pipe. That is, it is easy to insert a tow line into the tubular derivative introduced into the pipe as in the related art, and by pulling the linear body into the tubular derivative through the inserted tow line, If the linear body is inserted and arranged in the derivative, the linear body is pulled in the tubular derivative without a continuous pipe connection part, so that even at the bent part of the pipe, it comes into contact with the pipe connection part. Instead, it is guided and guided and protected from damage. Moreover,
Since the linear body is inserted by towing, there is no possibility that the linear body is bent by being caught at the tip. After inserting the linear body into the pipe, the tubular derivative may be pulled out of the pipe in a state where the linear body is arranged. Therefore, it is possible to more easily and smoothly insert and arrange the linear body into the existing pipe while preventing damage to the linear body. When a flexible resin tube is used as the tubular derivative as in the method for connecting a conduit according to the third aspect of the present invention, the surface is generally made of a soft resin body having a smooth surface. Since the body is guided and guided, the sliding resistance is kept lower and the action of the tension due to the sliding resistance on the linear body is further reduced, and the linear body is not damaged since it is soft. Therefore, in order to insert and arrange the linear body in the pipe, the linear body can be naturally pushed in and pushed in. In addition, since the linear body can be pulled in with the sliding resistance being reduced by the method for connecting to the conduit according to the invention according to the fourth aspect, the linear body can be easily inserted and the linear body can be inserted. You can prevent body damage. In other words, if the linear body is drawn into the bellows tube, the contact between the bellows tube and the linear body becomes almost point contact, and the contact length is shortened as a whole, so that when the linear body is inserted, Sliding resistance can be reduced. In addition, since the bellows tube is rich in flexibility, when the bellows tube is introduced into the pipe, the bellows tube is adapted to the bent portion of the pipe and is easily introduced. Therefore, a metal bellows tube can also be used for the tubular derivative, and the strength of the bellows tube can be used to introduce the tubular derivative over a long distance, and therefore, the insertion of the linear body over a long distance Enables placement. According to the method of connecting to a pipe according to the fifth aspect of the invention,
Handling of the tubular derivative is facilitated. That is, since the braid is rich in flexibility, it can be tied or wound up during storage and transport, and the braid is soft, so that the present invention according to the above-described claims 1 to 4 can be used. The transport of the tubular derivative is facilitated while exhibiting the same operation and effect as in the method of connecting to the conduit. still,
A bellows-shaped braid can be suitably used as the braid.

[0008] In addition, according to the method for connecting to a pipe according to the sixth aspect of the present invention, similarly to the method for connecting to a pipe according to the first aspect of the present invention, a linear body is formed. Since the wire is drawn into the tubular derivative, it is possible to prevent the linear body from being damaged at the time of drawing. That is, the tow line is inserted into the pipe, and the linear body covered with a tubular covering (may be substantially the same as the tubular derivative according to any one of claims 1 to 5). Is drawn into the pipe, the linear body does not directly contact the inside of the pipe, and even if there is a step in the pipe, the linear body is protected from damage. Further, since the linear body is pulled in together with the tubular covering, the tensile force at the time of retraction is also shared by the tubular covering, so that an excessive tensile force can be prevented from acting on the linear body. Therefore, it is easy to insert and dispose the linear body into the pipe over a long distance, and even in the case of a pipe having many bent portions, an increase in sliding resistance due to this is suppressed, and the sliding is prevented. The linear body can be inserted and arranged in the pipe while preventing damage to the linear body without exerting a resistance force due to resistance on the linear body. Incidentally, if the linear body and the tubular covering body are individually connected to a tow line for towing the linear body together with the tubular covering body, the linear body is inserted and arranged in the pipe. In this state, the connection between the tow line and the linear body is released, and when the tow line is pulled out, the tubular covering is removed from the inside of the pipe in a state where the linear body is inserted and arranged in the pipe. It becomes possible to pull it out. Therefore, in the same manner as the above-described method for connecting a pipe to a conduit, the linear body can be easily and smoothly inserted and arranged in an existing pipe without damaging the linear body. In addition, according to the method of connecting a pipe to a pipe according to the seventh aspect of the present invention, the surface is generally smooth and a soft resin body is used to pull the pipe into the pipe. And, since it is soft, it can easily pass through the bent portion of the pipe, and the sliding resistance to the pipe is borne by the flexible resin pipe constituting the tubular coating.
There is no risk of damaging the linear body. Note that, in a state where the linear body is inserted into the flexible resin pipe, it is possible to insert the linear body into the pipe instead of inserting the tow line. In addition, according to the method for connecting a pipe to a pipe according to the eighth aspect of the present invention, the tubular covering body surrounding the linear body can be drawn into the pipe with the sliding resistance reduced. As a result, the linear body can be easily inserted, and the linear body can be prevented from being damaged. In other words, if the linear body is pulled into the pipe together with the bellows pipe, the contact between the bellows pipe and the pipe becomes almost point contact, and the contact length becomes shorter as a whole. The sliding resistance at the time can be reduced. In addition, since the bellows tube is rich in flexibility, when the bellows tube is introduced into the pipe, the bellows tube is adapted to the bent portion of the pipe and is easily introduced. Therefore, a bellows tube made of metal can be used as the tubular derivative, and the strength of the bellows tube can be used to insert and dispose the linear body over a longer distance. In addition, according to the method for connecting a pipe to a pipe according to the ninth aspect of the present invention, the handling of the tubular cover is facilitated. In other words, since the braid is rich in flexibility, it can be bound or wound up during storage and transport, and the same operation as in the method of conducting a wire to a pipe according to the invention according to claim 6 above. While having the effect, the transport of the tubular covering to the construction site becomes easy.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for connecting a pipe to a pipe according to the present invention will be described below with reference to the drawings. FIGS. 1 to 3 are explanatory views showing the procedure of connecting a line to a pipe according to the present invention.

FIG. 1 shows an outline of a method for connecting a pipe 3 in which a linear body 3 is inserted into an existing pipe 1. Specifically, as shown in FIG. 2, first, one end of the towing line 4 is inserted from an opening 1a formed on one side of the pipe 1, and then pulled out from an opening 1b formed on the other side. The towing line 4 is inserted into the pipe 1 (see FIG. 2A), and one end 5a of a flexible tubular derivative 5 capable of forming a guide path for the linear body 3 therein is inserted. Connected to one end of the towing line 4, and pulling back the towing line 4, towing the tubular derivative 5 through the towing line 4 and introducing it into the pipe 1 (FIG. 2B). ), While removing the tow line 4 from the introduced tubular derivative 5,
Again, one end of the towing line 4 is inserted from one end of the tubular conductor 5, and the inside of the tubular conductor 5 is inserted toward one opening 1a of the pipe 1 (see FIG. 3C). Connecting the linear body 3 to one end of the inserted towing line 4 and pulling the towing line 4 back to one end side of the tubular conductor 5;
The state where the linear body 3 is disposed in the pipe 1 after the linear body 3 is inserted through the pipe 1 and inserted into the pipe 1 (see FIG. 4D). Then, the tubular derivative 5 is pulled out from the inside of the pipe 1 (see FIG. 5E).

As the tubular derivative 5, a flexible resin tube made of a polyethylene resin formed in a bellows tube is used, and the smoothness of the surface and the flexibility of the bellows shape are used to easily form the tubular derivative 5. The linear member 3 can be introduced into the pipe 1 with a low resistance, and the linear body 3 can be introduced by using a moderate circular cross-sectional shape maintaining strength provided by the bellows shape and smoothness of the inner surface thereof. Can be pulled into the tubular derivative 5 with low traction force. Therefore, the linear body 3 is formed by bending the pipe 1 as shown in FIG.
c, even if there is a stepped portion 1e formed on the inner surface between the straight pipe portion 1d and the curved pipe joint 2, the inside of the tubular derivative 5 slides on the inner surface and slides in a multipoint contact state almost close to point contact. Meanwhile, it is inserted into the pipe 1.

As shown in FIG. 4, the towing line 4 of the towing line 4 is formed of a coil spring in the same manner as a conventional wire tool, and the end of the towing line 4 can be connected to the tubular conductor 5 and the linear member can be connected to the wire. It has a guide body 8 which can be connected to the body 3. As shown in FIG. 1 (a) showing a longitudinal section and FIG. 2 (b) showing a front view, the guide body 8 has a tip-side member 10 formed in a hemispherical shape and a base member formed in a conical shape. End member 9
And formed separately. Further, as shown in FIG. 5, the derivative connecting member 12 formed so as to be able to connect the bellows-shaped tubular derivative 5 is replaced with the distal member 10 so that the derivative connecting member 12 can be attached to the proximal member 9. It is formed separately from the side member 10.

The base member 9 has a small diameter side that is
The outer diameter of the large diameter side is formed smaller than the minimum inner diameter of the bellows-shaped tubular derivative 5, and the large diameter side end has
A female screw portion 9a in which a female screw is screwed is formed so that the distal end member 10 can be attached (see FIG. 4).

The distal end member 10 comprises a hemispherical divided distal member 11 divided in the radial direction. The distal end member 10 is connected to the small-diameter end by sandwiching the end of the linear body 3 therebetween. A locking recess 11a which forms a hollow portion in a combined state capable of locking a locking portion at the distal end of the linear body 3 is formed in the divided distal end member 11, and the distal end side is provided with the locking recess 11a. The semicircular groove 11b is formed so as to be formed in a state where the insertion holes through which the linear bodies 3 can be inserted are combined. In addition, the large-diameter end has a female screw portion 9a of the proximal end member 9 in a united state.
Male screw portion 11c in which a male screw that can be screwed into the female screw is screwed
Is formed to protrude. The two divided distal members 11 are integrated by screwing the male screw portion 11c into the female screw portion 9a of the proximal member 9, and the hemispherical distal member 10 is formed.
To form

As shown in FIG. 5, the derivative connecting member 12 has an outer peripheral surface having a larger diameter on the tubular derivative 5 side than the outer diameter of the tubular derivative 5 and a smaller diameter side on the proximal end member 9.
A male screw portion 12b is formed on the tapered surface having substantially the same diameter as the large diameter side, and has a male screw portion 12b provided with a male screw which can be screwed into the female screw portion of the female screw portion 9a of the base end member 9 on the small diameter side. I have. At the end on the outer diameter side, an outer peripheral surface is formed on the outer peripheral surface along the inner surface of the bellows-shaped tubular derivative 5, and a derivative connecting portion 12 a that can be fitted into the tubular derivative 5.
Is formed.

When the linear member 3 is inserted into the tubular conductor 5, first, the tubular conductor 5 is connected to the pipe 1.
Before being introduced into the inside, the distal end side member 10 is removed from the guide body 8 of the towing line 4, the end of the tubular derivative 5 is externally fitted to the insertion member 13 of the derivative connecting member 12, and the external fitting is performed. In a state where the two divided connecting members 15 are externally fitted and united so as to sandwich the formed end from the outside,
5b is screwed into the female screw portion of the proximal member 9 to connect the tubular conductor 5 to the tow line 4. Here, since the insertion member 13 has two chamfers, the tubular conductor 5
By slightly pinching the end of the tubular member 5 and deforming it into an elliptical shape, it becomes easy to fit the insertion member 13 into the tubular derivative 5 deformed into the elliptical shape. After the introduction of the tubular derivative 5 into the pipe 1, the derivative connecting member 12 is removed to disconnect the tubular derivative 5, and the distal member 10 is screwed with the male thread 11c into the female thread 9a. And insert it into the tubular derivative 5 again.
Insert the towing line 4 into the introduced tubular derivative 5,
The guide body 8 is pulled out from the one end 5a side of the tubular conductor 5, and the distal end member 10 is unscrewed with the base end member 9, and the disengaged locking recess 1 of the distal end member 10 is disassembled.
A locking portion formed at the tip of the linear body 3 to be inserted into 1a (a coupler attached to the tip of the linear body 3, a knot ball, or a crimped spherical body) The male screw portion 11c is screwed into the female screw portion 9a of the base member 9 in a state where the distal member 10 is united with the locking recess 11a, and the inserted traction is inserted. The linear body 3 is connected to the rope 4, and the linear body 3 is pulled through the pulling rope 4 to thereby form the tubular derivative 5.
It is inserted and placed inside. When the insertion arrangement is completed, the distal member 10 is detached from the proximal member 9 again, and the connection between the linear body 3 and the towing line 4 is released. Thereafter, the tubular conductor 5 is pulled out to the tip end side of the linear body 3 to complete the wiring operation.

Since the towing line 4 is constructed as described above, the guide body 8 to which the distal end member 10 is attached has a distal end formed in a hemispherical shape when the towing line 4 is inserted. Even the bent portion can be easily pushed and inserted, without being supported by the step portion 1 e in the pipe 1, and when the tubular derivative 5 is pulled in, the large diameter side of the derivative connecting member 12 is larger than the outer diameter of the tubular derivative 5. Since the guide body 8 has a tapered surface formed on the base end side with a small diameter, the stepped portion of the pipe can be pulled back without hindrance, and the tubular derivative 5 can be introduced into the pipe 1, and The introduced tubular derivative 5
When the towing line 4 is inserted again into the inside, the guide body 8 to which the distal end side member 10 is attached is smaller in diameter than the inner diameter of the tubular conductor 5, so that the tubular conductor having a small frictional resistance on the inner surface is provided. 5 can be inserted smoothly, and the guide body 8
Since the linear body 3 is attached and pulled, the linear body can be easily inserted into the pipe 1 with reduced frictional resistance.

Alternative Embodiment <1> The tubular derivative 5 may be a straight pipe instead of a bellows pipe as long as it is flexible against bending.

<2> A braid may be used as the tubular derivative 5. That is, a braid that can form a space through which the linear body 3 can be inserted is introduced into the pipe 1, and the guide 8 of the towing line 4 is inserted into the space inside the introduced braid.
When the towed cable 4 is pulled back, the linear body 3 towed by the towline 4 is guided in the braid, so that the linear body 3 is inserted into the inner surface of the pipe 1. Without coming into contact with the pipe 1.
Moreover, since the braid is highly flexible, it can be tied or wound up during storage and transport,
In addition, since the braid is highly flexible, the transport of the tubular derivative is facilitated. In addition, as said braid,
For example, a bellows braid as shown in FIG. 6 can be suitably used. In this case, each of the towing lines 4 does not require any special device to introduce the tubular conductor 5 composed of the bellows braid into the pipe, and one end 5 a of the tubular conductor 5 is connected to the towing line 4. Can be simply attached to the guide body 8 and pulled into the pipe as shown in FIG.

<3> In the above embodiment, the pipe 1
Although the example in which the linear body 3 is inserted into the tubular conductor 5 introduced into the pipe 1 has been described, one end of the towing line 4 is inserted from one opening 1a of the pipe 1 and then pulled out from the other opening 1b. Then, the towing line 4 is inserted into the pipe 1, and the tubular covering 6, which can surround the outer periphery of the linear body 3, and the linear body 3, which is enclosed in the tubular covering 6, are inserted through the tubular covering 6. When the tubular covering 6 is pulled together with the linear body 3 through the towing line 4 while being connected to the towing line 4,
The tubular covering 6 may be pulled out of the pipe 1 with the linear body 3 inserted and arranged in the pipe 1. In this way, the towing line 4
May be inserted only once, and in a state where the linear body 3 is protected by the tubular covering 6, the linear body 3 can be drawn into the pipe 1 without coming into contact with the inner surface of the pipe 1. As described in the embodiment, damage to the linear body 3 can be prevented. In addition, since the tubular covering 6 bears the tension caused by frictional resistance when the linear body 3 is drawn into the pipe 1 via the towing line 4, the tubular body 6 bears on the linear body 3. The acting tension can be reduced, and damage to the linear body 3 caused by the tension can be prevented.

<4> If a flexible resin tube is used as the tubular coating 6, the frictional resistance between the resin tube having a generally smooth surface and the pipe 1 can be reduced.
The pull-in resistance at the time of pull-in is reduced, and the wiring work becomes easy.

<5> It is also effective to use a bellows tube as the tubular covering 6. When the linear body 3 is pulled into the pipe 1 via the towing line 4, the tubular covering 6 is used. 6 and the tubular coating 6
The length of contact between the wire 3 and the inner surface of the pipe 1 can be reduced, and the resistance of the linear body 3 to be drawn into the pipe 1 can be reduced. In addition, if a metal bellows tube is used as the bellows tube, the elongation and deformation of the tubular covering 6 can be reduced, so that the tensile force acting on the linear body 3 can be reduced, and the linear body 3 can be sufficiently protected. it can.
As the metal bellows tube, not only a drawn bellows tube but also a flexible metal tube is suitably used. The flexible metal tube is very useful for protection of the linear body 3 because the flexible metal tube has a small amount of elongation deformation in an extended state while being rich in flexibility.

<6> It is also effective to use a braid as the tubular covering 6. That is, in a state where the linear body 3 is inserted into the braid, the linear body 3 is pulled into the pipe 1 together with the tubular covering body 6 made of the braid, and the linear body 3 is brought into contact with the inner surface of the pipe 1. Without contact, damage to the linear body 3 can be prevented. Moreover, since the braid is highly flexible, the transport of the tubular covering is facilitated. As the braid, the bellows braid shown in FIG. 6 can be suitably used. In this case, for example, as shown in FIG. 9, the linear body 3 is attached to the towing line 4 using the guide body 8 including the distal end side member 10 as described in the above-described embodiment, and at the same time, the bellows braid is attached. The tubular covering 6 made of the above-mentioned is attached to the guide body 8, and the tubular covering 6 may be pulled into the pipe 1 together with the linear body 3.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a pipeline, schematically illustrating a procedure of a method of connecting a conduit to a pipeline according to the present invention.

FIG. 2 is a vertical sectional view of a main part for explaining a procedure of a specific example of a method of connecting a pipe to the pipeline shown in FIG. 1;

FIG. 3 is a vertical cross-sectional view of a main part of a pipe explaining an example of introduction of a cyclic derivative into the pipe.

FIG. 4 is an explanatory view of an essential part showing an example of a guide member of a tow line.

FIG. 5 is a longitudinal sectional view of an essential part showing an example of a towing line guide body.

FIG. 6 is a partial perspective view showing an example of a braid as a cyclic derivative.

FIG. 7 is a vertical sectional view of a main part of a pipe for explaining another example of introduction of a cyclic derivative into the pipe.

FIG. 8 is a longitudinal sectional view of a main part of a pipe schematically illustrating another example of a method of connecting a pipe to a pipe according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piping 1a One opening of piping 1b The other opening of piping 3 Linear body 4 Towing line 5 Tubular derivative 5a One end of tubular derivative 6 Tubular coating

Claims (9)

[Claims] 1. A method of connecting a linear body to an existing pipe by inserting a linear body into the pipe, wherein one end of a towing line is inserted from one opening of the pipe and then the other opening. And pulling the tow line into the pipe, connecting one end of a flexible tubular derivative capable of forming a guideway for the linear body inside to the inserted tow line. Introducing the tubular body into the pipe while towing the towed line via the towing line, inserting the linear body into the pipe through the introduced tubular body, and then connecting the linear body to the pipe. A method of connecting a pipe to a pipe through which the tubular derivative is pulled out of the pipe while being placed in the pipe. 2. When the linear body is inserted and arranged in the tubular derivative, a tow line is inserted into the introduced tubular derivative, and the linear member is connected to the inserted tow line. 2. The method according to claim 1, wherein the wire is pulled through a cable and inserted into the tubular conductor. 3. The method according to claim 1, wherein a flexible resin tube is used as the tubular derivative. 4. The method according to claim 1, wherein a bellows tube is used as the tubular derivative. 5. The method according to claim 1, wherein a braid is used as the tubular derivative. 6. A wiring method for a pipe in which a linear body is inserted and disposed in an existing pipe, wherein one end of a towing line is inserted from one opening of the pipe and then the other opening. Drawn out of the pipe, the towing line is inserted into the pipe, and a tubular covering body capable of surrounding the outer periphery of the linear body, and the towing line through which the linear body surrounded by the tubular covering body are inserted. In a connected state, the tubular covering body is towed together with the linear body through the towing line and introduced into the pipe, and the tubular covering body is inserted and arranged in the pipe, To a pipe line for pulling out from the pipe. 7. The method according to claim 6, wherein a flexible resin tube is used as the tubular covering. 8. The method according to claim 6, wherein a bellows tube is used as the tubular covering. 9. The method according to claim 6, wherein a braid is used as the tubular covering.