JPH07250410A - Wiring adapter for conduit - Google Patents

Abstract

PURPOSE:To enhance the work efficiency, as well as the quality and reliability of a wire, while reducing the labor cost. CONSTITUTION:A wiring conduit 3 is split and secured separably by means of a clamp 10. The wiring conduit 3 is communicated with a conduit 18 for introducing a spiral flow. The wiring conduit 3 is unclamped and a cable is inserted in a parallel direction before the conduit 3 is secured by means of the clamp 10. The wiring conduit 3 is coupled, on the wire feeding port 8 side thereof, with a piping and a spiral flow is fed from a spiral flow generator 2 through the spiral flow introduction conduit 18 and the wiring conduit 3 into the piping thus feeding the cable into the piping through the wiring port 7 of the conduit 3. The cable can be inserted into the split wiring conduit 3 from a direction parallel with the axis thereof and the wiring conduit 3 can be separated at the intermediate part of the cable and removed therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conduit tube used for inserting a linear body into various conduits such as a cable inserted through a pipe buried between a handhole and a manhole. Regarding the road adapter.

[0002]

2. Description of the Related Art Conventionally, for example, as a most primitive method, a method of manually pushing a cable into a pipe has been used to insert the cable into a pipe buried so as to straddle a handhole or a manhole. There is.

However, the method of manually inserting the cable into the pipe is not possible for long distances. As a result, the distance between the handhole and the manhole must be set to be short, resulting in high construction cost. Further, even if the distance for inserting the cable into the pipe is short, not only much labor and time are required for the work, but also dangerous.

In order to solve the above conventional problems,
In recent years, in order to insert a cable or the like into a pipe or the like, a wire passage device that generates and sends a spiral flow of gas has been used. As shown in FIGS. 11 and 12, this wire passage device is composed of a spiral flow generation device 51, a compressor 52, and the like. Spiral flow generator 5
1, the insertion opening 53 is formed on one side and the insertion opening 53 is formed on the other side.
A delivery port 54 having a smaller diameter is formed, and an inclined surface 55 that gradually converges is formed at an intermediate portion between the insertion port 53 and the delivery port 54 from the insertion port 53 side to the delivery port 54 side. A distribution chamber 56 is formed on the outer periphery of the intermediate portion, and the distribution chamber 56
Is opened to the inner peripheral inclined surface 55 side by the slit 57. An air supply port 58 is connected to the distribution chamber 56, and the air supply port 58
An air cock 59 is provided at an intermediate portion of the. One end of a hose 60 is connected to the air supply port 58, and the other end of the hose 60 is connected to an air supply port 61 of the compressor 52. An air cock 62 is provided in the middle of the air supply port 61.

In order to insert the cable into the pipe by using the conventional wire passage device constructed as described above, first, as shown in FIG.
4. Install the compressor 52 and the like near the handhole (or manhole) 65 on the ground. Next, the hose 60 connects the spiral flow generation device 51 to the compressor 52. Next, the cable 63 is unwound from the reel 64 and is inserted into the delivery port 54 from the insertion port 53 of the spiral flow generation device 51 via the guide roll 66. Subsequently, a cable grip (not shown) and a parachute 67 are attached to the tip of the cable 63, and the tip is inserted into a pipe 68 which is communicated so as to straddle between the handholes (or manholes) 65. Next, the outlet 54 of the spiral flow generator 51 is connected to the end of the pipe 68. In this state, the air cocks 62 and 59 are opened, and compressed air is supplied from the compressor 52 to the distribution chamber 56 of the spiral flow generation device 51 via the hose 60. The compressed air supplied to the distribution chamber 56 is ejected from the slit 57 and flows along the inclined surface 55 toward the delivery port 54 side. Corresponding to this flow, the compressed air merges with the air sucked from the insertion port 53, which becomes negative pressure. It becomes a spiral flow, and this spiral flow is pipe 6
Send within 8

The above-mentioned spiral flow in the spiral flow generating device 51 is a flow that converges on the pipe axis in the pipe flow, has a small degree of turbulence, and can prevent violent contact with the pipe inner wall due to automatic vibration. Coupled with the fact that a strong negative pressure suction force is generated at the insertion port 53, the cable 63 can be delivered from the insertion port 53 with a small resistance even at a long distance while pulling it from the insertion port 53. After the completion of the wiring work, the cable 63 is cut in consideration of the connection length with other cables, and the spiral flow generation device 51 is removed from the pipe 68.

[0007]

However, the method of fixing the spiral flow generating device 51 to the end of the pipe 68 and sending the wire as in the conventional example described above can save labor and ensure safety. However, the cable grip or the like cannot be attached to the cable 63 until the cable 63 is moved through the spiral flow generation device 51 in the axial direction and passed therethrough. For this reason, not only is workability poor, but in order to remove the spiral flow generator 51 from the pipe 68, the cable 63 must be cut at a place other than the end of the cable 63. In this way, the cable 63 is connected to the pipe 68 1
Since it is necessary to pass each span, it is necessary to connect the cables 63 to each other in the handholes 65, manholes, etc., and it is not possible to increase the length of the cables 63. Therefore, not only is the work efficiency poor, but the quality and reliability of the cable 63 are poor.

In a narrow place such as a handhole 65 or a manhole, the spiral flow generator 51 is connected to the pipe 6
Difficult to fix to the end of 8. Further, in a narrow space such as the hand hole 65, the operation of the air cock 59, the cable 63
Difficult to work such as sending.

The present invention solves the above-mentioned conventional problems, and it goes without saying that the work of inserting the linear body into the conduit can be labor-saving and safe.
The linear body can be inserted in the direction parallel to the axial direction and can be removed from the linear body at the intermediate portion of the linear body, so that the preparation work of the linear body can be done by other preparations. It can be performed in parallel with the work, and in addition, it is possible to easily perform operations such as removing and changing the direction of the linear body, and it is possible to extend the line-to-line distance between the linear bodies. The number of connection points can be reduced, and even in a narrow place such as a handhole or manhole, the linear body can be easily fed into the piping, etc. Therefore, the construction efficiency can be improved and the construction cost can be reduced. It is possible,
Another object of the present invention is to provide a conduit conduit adapter capable of improving the quality and reliability of the linear body.

[0010]

The technical means of the present invention for achieving the above-mentioned object is to provide a conduit line divided along the axial direction and the conduit line for separation. Gas to be delivered from the spiral flow generating device so that the fastener to be fixed and one end of which is connected to the conduit for passage and the linear body inserted in the conduit for passage can be delivered. And a conduit for introducing a spiral flow into the conduit for the passage.

In the above technical means, the conduit for passage is formed in a straight tube shape, the conduit for introducing spiral flow is formed to be inclined with respect to the conduit for passage, or the conduit for passage is formed. Is bent so that the wire inlet for inserting the linear body and the wire outlet for delivering the wire do not face each other, and the spiral flow introducing pipe is substantially opposed to the wire outlet in the wire pipe. Or bend the conduit line so that the wire inlet for inserting the linear body and the wire outlet for delivering the linear body do not face each other, and the inlet side of the spiral flow introducing pipe line is formed. Can be directed to the same side as the passage opening in the passage line.

In each of the above technical means, it is preferable that the conduit for passage has a spiral flow backflow prevention plate for narrowing the passage opening.

[0013]

According to the present invention configured as described above, the spiral flow introducing pipe is connected to the spiral flow generating device,
The conduit for pipes is separated by releasing the fasteners, the linear body is inserted into the separated conduit for pipes from the direction parallel to the axis, and then the conduit for pipes is fixed by the fasteners. By connecting the conduit for air passage to the end of the conduit in an airtight state, and then, by driving the spiral flow generator, sending a spiral flow of gas from the conduit for introducing the spiral flow to the conduit for conduit. It is possible to position the linear body at the center of the conduit and deliver the linear body while drawing it into the conduit for wire passage. In this way, the linear body can be inserted into the conduit for the wire in a direction parallel to the axial direction, and the conduit for the wire can be removed from the linear body at the intermediate portion of the linear body. Therefore, the preparation work of the linear body can be performed in parallel with other preparation work, and furthermore, the operations such as the removal of the linear body and the change of the direction can be easily performed, and the passage of the linear body can be performed. The line distance can be extended, the number of connection points between the linear bodies can be reduced, and the linear bodies can be easily and safely fed into the pipeline in a narrow place such as a handhole or a manhole.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. 1 to 8 show a first embodiment of the present invention.
FIG. 1 is a partially cutaway side view showing a conduit conduit adapter in the embodiment of FIG.
2 is a view taken along the line AA of FIG. 1, FIG. 3 is a view taken along the line AA of FIG. 1 in a state in which the conduit for the line is separated, and FIG. 4 is a state before being connected to the spiral flow generator. FIG. 5 to FIG. 8 are explanatory views of a usage example.

1 to 4, 1 is a conduit line adapter of the present invention, and 2 is a spiral flow generator.
The line conduit adapter 1 will be described. The line conduit 3 is divided into two along the axial direction. Each half body 4,
Reference numeral 5 is formed in a semicircular cross section, and both end faces along the axial direction are abutted against each other to be combined into a cylindrical shape. Inside one end of the conduit 3 for passage, a spiral backflow prevention plate 6 was fixed to one upper half body 4 by welding or the like, and it was narrowed down to the inside of the other lower half body 5. Passage 7
Is formed. The conduit 3 for wire passage is formed in a straight tube shape so that the wire outlet 7 and the wire outlet 8 face each other, and the outer diameter on the wire outlet 8 side is slightly smaller than the outer diameter on the wire outlet 7 side. A stepped portion 9 for position regulation is formed in the middle portion. Both halves 4, 5 straddle both abutting portions at the outside of the end portion on the side of the passage opening 7 and the outside of the position slightly closer to the passage opening 7 side than the step portion 9, and each pair of fasteners 10 It is separably fixed.

The fastener 10 includes a hook receiver 11 and a hook 1.
2, lever 13, etc. The base of the hook receiver 11 is fixed to the half-divided body 5 side, the receiving part 14 is projected outward, and the positioning guide part 15 is projected slightly higher than the end face for matching. A support plate 16 is fixed to the half-split body 4 side, and a base portion of the lever 13 is supported on the support plate 16 by a horizontal shaft 17 so as to be vertically rotatable. A base portion of the hook 12 is rotatably supported on an intermediate portion of the lever 13.

Then, the lever 13 and the hook 12 are rotated downward in a state where the half-split bodies 4 and 5 are butted against each other,
The tip of the hook 12 is engaged with the receiving portion 14 of the hook receiver 11, the lever 13 is forcibly rotated upward, and the rotation fulcrum of the hook 12 with respect to the lever 13 is the shaft 17 which is the rotation fulcrum of the lever 13. 1 to the half-divided body 4 side, the hook 12 and the hook receiver 11 are held in a locked state as shown in FIGS. 1 and 2, the half-divided bodies 4 and 5 are fixed, and the conduit 3 for the wire passage is fixed. Can be configured. At this time, the butting end surfaces of the half-split bodies 4, 5 can be easily and surely positioned by the positioning guide 15, and moreover,
In this aligned state, the hook 12 is engaged with the receiving portion 14 of the hook receiver 11, and the half-split bodies 4 and 5 can be quickly fixed by a simple operation of rotating the lever 13.

Contrary to this, the lever 13 is rotated downward to release the hook 12 from the receiving portion 14 of the hook receiver 11 to release the locked state, and the chain line in FIG. 1 and FIG.
As shown in FIG. 3, the conduit line 3 can be separated into half bodies 4 and 5. In this way, the conduit line 3 for wire passage can be quickly separated along the axial direction by a simple operation of rotating the lever 13 downward.

By welding in a state where the proximal end of the spiral flow introducing pipe 18 is connected to a position closer to the passage opening 7 side than the step 9 at the intermediate portion of the half-split body 4 of the pipe 3 for passage. It is fixed. The spiral flow introducing conduit 18 is set such that its axis is an obtuse angle with respect to the wire outlet 8 side in the axis of the conduit 3 and is delivered from the spiral flow generating device 2 as described later. The spiral flow flowing in from the inlet port 19 on the tip end side can be guided in that state to the transmission port 8 side of the conduit tube 3.

A small diameter portion 20 is formed on the outer periphery of the spiral flow introducing conduit 18 on the side of the inflow port 19 and an engaging step portion 21 is formed on the tip end side of the small diameter portion 20. The small diameter portion 20 has an unlocking ring. 22 is slidably fitted in the axial direction,
A large-diameter operating portion 23 is formed at the base of the unlocking ring 22.

The spiral flow generator 2 will be explained. As shown in FIGS. 1 and 4, the basic structure is the same as that of the conventional spiral flow generator 51, and the spiral flow of the conduit conduit adapter 1 is as follows. It differs from the above-mentioned conventional example in that it has a connecting portion with the introduction conduit 18 and in that the linear body is not inserted. That is, the outside airflow inlet 24 is formed on one side and the outside diameter 2 is smaller than that of the outside airflow inlet 24 on the other side.
5 is formed, and an inclined surface 26 that gradually converges is formed at an intermediate portion between the outside air inlet 24 and the outlet 25 from the outside air inlet 24 side to the outlet 25 side. A distribution chamber 27 is formed on the outer periphery of the intermediate portion, and the distribution chamber 27 has a slit 28.
Is opened to the inner peripheral inclined surface 26 side. Distribution chamber 27
An air supply port 29 is connected to the air supply port 29, and an air cock 30 (see FIGS. 5 to 8) is provided at an intermediate portion of the air supply port 29.

A connecting pipe 31 is fixed to the front side of the delivery port 25 by welding using an auxiliary pipe 32. The tip end side of the connection pipe 31 is formed to have a large diameter, and a fitting hole 33 into which the tip end portion of the spiral flow introducing conduit 18 can be fitted is formed inside the tip end portion. Inside the tip of the connecting pipe 31, guide holes 34 are formed at a plurality of locations on the circumference at evenly-divided positions in the direction perpendicular to the axial direction. Each of the guide holes 34 is set so that the outer peripheral side of the connecting pipe 31 becomes larger and the inner peripheral side becomes smaller, and the smaller inner peripheral side portion communicates with the fitting hole 33. A lock member 35 is supported in the guide hole 34 so that the lock member 35 can be retracted from the fitting hole 33 and is prevented from coming off. . The lock portion at the tip of the lock member 35 is formed into a curved surface such that the surface on the tip side of the connection pipe 31 extends from the base side to the tip side, and gradually approaches the base side of the connection pipe 31.

Then, the tip of the spiral flow introducing pipe 18 of the conduit pipe adapter 1 is connected to the lock releasing ring 2
2 is retracted, it is press-fitted into the fitting hole 33 of the connecting pipe 31 of the spiral flow generation device 2, whereby the curved portion of the lock member 35 is pressed by the tip of the spiral flow introduction pipe line 18, and the lock member 35. Is retracted against the elasticity of the compression spring 36, and the tip of the spiral flow introducing pipe 18 is connected to the connecting pipe 3
It is possible to fit in one fitting hole 33. With this fitting, as shown in FIG. 1, the lock member 35 is moved to the compression spring 36.
Of the guide hole 3
4 can be engaged with the engaging stepped portion 21 of the spiral flow introducing conduit 18 and locked in a retaining state.

On the contrary, when the lock releasing ring 22 is moved forward, the curved portion of the lock member 35 is pressed by the tip of the lock releasing ring 22, and the lock member 35 is retracted against the elasticity of the compression spring 36 to be locked. The state can be canceled.
Then, by holding the unlocked state and separating the conduit conduit adapter 1 from the spiral flow generator 2, as shown in FIG. 4, the spiral flow introducing conduit 1 is provided.
8 can be detached from the connecting pipe 31.

As described above, the spiral flow introducing pipe 18 of the conduit pipe adapter 1 is connected to the connecting pipe 31 of the spiral flow generating device 2 easily and quickly by so-called one-touch operation or is disconnected. Can be made.

In the above configuration, an example of use in which the cable is inserted into the pipe installed across the handhole (or manhole) will be described below. As shown in FIG. 5, first, the cable drum 64 around which the cable 63 is wound, the compressor 52, and the like are installed on the ground near the handhole 65. Next, the air supply port 29 of the spiral flow generator 2 is connected to the compressor 5 by a hose 60.
2 is connected to the air supply port 61. Next, the spiral flow introducing pipe 18 of the conduit pipe adapter 1 is connected to the connecting pipe 31 of the spiral flow generating device 2 as described above and locked.
Next, as described above, the lock of the fastener 10 is released to separate the conduit line 3 into two halves 4 and 5. On the other hand, the cable 63 is slightly extended from the cable drum 64 via the guide roller 66, and a cable grip (not shown) and a parachute 67 are attached to the tip of the cable 63. Next, after inserting the tip of the cable 63 into the half-divided body 4 side from the direction parallel to the axis and confirming that the parachute 67 side is positioned so as to be located ahead of the wire transmission port 8, As described above, the half-split body 5 is fixed to the half-split body 4 by operating the fastener 10, and the distal end portion of the cable 63 is inserted into the conduit 3 for wire passage.

Next, the side of the conduit 8 of the conduit 3 of the conduit adapter 1 is inserted into the end of the pipe 68 and connected in an airtight manner, and the tip of the cable 63 and the parachute 6 are connected.
7 and the like are inserted into the pipe 68. At this time, conduit 3
The position of the insertion depth into the pipe 68 can be regulated by the stepped portion 9 of. And at the time of this connection, the abutting part of the half-divided bodies 4 and 5 in the conduit 3 for conduit, and the conduit 3 for conduit.
If the pipe 68 and the pipe 68 cannot be maintained in an airtight state, the airtight state can be kept by an appropriate means such as coating the outer periphery of the conduit line 3 with a sealing material such as a rubber material.

When the preparation is completed in this way, the air cocks 62, 30 are opened, and compressed air is supplied from the compressor 52 to the distribution chamber 27 of the spiral flow generator 2 via the hose 60. The compressed air supplied to the distribution chamber 27 is ejected from the slit 28 and flows toward the outlet 25 side along the inclined surface 26. Corresponding to this flow, the compressed air merges with the air sucked from the outside airflow inlet 24 that becomes negative pressure. Becomes a spiral style. The spiral flow is supplied to the outlet 25, the connecting pipe 31, and the conduit adapter 1 for introducing the spiral flow.
8, it is delivered to the inside of the pipe 68 via the conduit 3 for the line.

The above-described spiral flow in the spiral flow generator 2 is a flow that converges on the pipe axis in the pipe flow, has a small degree of turbulence, and can prevent violent contact with the pipe inner wall due to automatic vibration. Combined with the fact that a strong negative pressure suction force is generated at the air flow inlet 24, and also a strong negative pressure suction force is generated at the passage opening 7 narrowed down by the spiral flow backflow prevention plate 6 in the passage conduit adapter 1 as well. Therefore, the flow velocity is high. By this spiral flow and the action of the parachute 67 that receives the spiral flow, the cable 63 is pulled out from the passage opening 7 while the cable 63 is positioned substantially at the center of the pipe 68, and the cable 63 is delivered with a small resistance even in a long distance. can do. At this time, the air cock 30 or 62 is operated to adjust the flow velocity of the spiral flow to adjust the feeding speed of the cable 63.

When the tip of the cable 63 reaches the adjacent handhole 65, the pulling effect of the parachute 67 is lost, and the cable 63 is connected to the pipe 6 extending between the handholes 65.
Stop in the state of being inserted in 8. Therefore, the air cocks 62 and 30 are closed, and the cable 63 is pulled out by the human hand in a required length within the handhole 65 on the arrival side.

Without connecting the cable 63 in the middle,
In order to lengthen the pipe and subsequently insert the pipe 68 into the next pipe 68, as an example thereof, first, the conduit conduit adapter 1 and the spiral flow generator 2 are removed from the pipe 68 on the insertion start side. Next, the compressor 52 is moved to the vicinity of the adjacent relay-side handhole 65, and
In the same manner as described above, the conduit line 3 is separated by operating the fastener 10, and the tip of the cable 63 is inserted into the half-divided body 4 side in a direction parallel to the axis, and the fastener 10 is operated. The half-split body 5 is fixed to the half-split body 4 by means of, and the tip end portion of the cable 63 is inserted into the conduit 3 for wire passage. Next, as shown in FIG. 6, at the end of the pipe 68 through which the cable 63 is to be inserted, the wire outlet 8 side of the wire conduit 3 of the wire conduit adapter 1 is made airtight in the same manner as above. After connection, the tip of the cable 63, the parachute 67, etc. are inserted into the pipe 68.

When the preparation is completed in this way, the air cocks 62, 30 are opened and the compressed air is supplied from the compressor 52 to the distribution chamber 27 of the spiral flow generating apparatus 2 via the hose 60 as in the above. As a result, the spiral flow generation device 2 generates a spiral flow and sends the spiral flow into the pipe 68 via the conduit adapter 1, and the spiral flow and the parachute 67 that receives the spiral flow cause the cable 63 to pass through. Piping 6 while drawing in from the mouth 7
It is possible to deliver even within a long distance within 8. If possible, the cable 63 can be continuously inserted into the next pipe 68 in the same manner as above. After completing the insertion work of the cable 63 into the pipe 68,
By removing the conduit conduit adapter 1 from the pipe 68 and releasing the lock of the fastener 10 to separate the conduit conduit 3 as described above, the cable 63 can be removed without cutting the cable 63. The conduit adapter 1 for a wire can be removed from the intermediate portion.

Without connecting the cable 63 in the middle,
Another example of use in which a plurality of pipes 68 extending over a plurality of handholes 65 are made long will be described. First, as shown in FIG. 7, first, a cable drum 64 in which a cable 63 is wound and a compressor 52 are wound. A handhole 6 for relaying another compressor 52 while installing the above on the ground near the handhole 65 on the insertion start side.
Install on the ground around 5. Next, each compressor 52
The air supply port 29 of the spiral flow generator 2 is connected to the air supply port 61 of the above by a hose 60. Next, the spiral flow introducing conduit 18 of the conduit conduit adapter 1 is connected and locked to the connecting pipe 31 of each spiral flow generating device 2 as described above. Next, as described above, the lock of the fastener 10 on the conduit conduit adapter 1 on the insertion start side is released to separate the conduit conduit 3 into two half bodies 4 and 5. On the other hand, cable 6
3 is slightly extended from the cable drum 64 via the guide roller 66, and a cable grip (not shown) and a parachute 67 are attached to the tip of the cable 63. Next, after inserting the tip of the cable 63 into the half-divided body 4 side from the direction parallel to the axis and confirming that the parachute 67 side is positioned so as to be located ahead of the wire outlet 8, As described above, the half-split body 5 is fixed to the half-split body 4 by operating the fastener 10, and the distal end portion of the cable 63 is inserted into the conduit 3 for wire passage.

Next, the line outlet 8 side of the line conduit 3 of the line conduit adapter 1 is connected to the end portion of the pipe 68 in the airtight state as described above. On the other hand, the relay side hand hole 65
In the same manner, the line outlet 8 side of the line conduit 3 of the line conduit adapter 1 is connected to the end portion of the pipe 68 at the other end in the airtight state as described above. At the same time, the relay side hand hole 6
5, the end portion of the pipe 68 on the insertion start side and the passage port 7 side of the passage conduit 3 of the passage conduit adapter 1 are connected in an airtight state by the relay pipe 69.

When the preparation is completed in this way, the air cocks 62, 30 are opened on the insertion start side in the same manner as above, and compressed air from the compressor 52 is passed through the hose 60 to the distribution chamber 27 of the spiral flow generator 2. Supply. As a result, the spiral flow generation device 2 generates a spiral flow and sends the spiral flow into the pipe 68 via the conduit adapter 1, and the spiral flow and the parachute 67 that receives the spiral flow cause the cable 63 to pass through. The inside of the pipe 68 can be delivered while drawing in from the port 7. When the tip of the cable 63 enters the conduit 3 of the conduit adapter 1 from the pipe 68 through the relay pipe 69, the air cocks 62 and 30 are opened on the relay side in the same manner as above, and the compressor is opened. Compressed air is supplied from 52 to the distribution chamber 27 of the spiral flow generator 2 via the hose 60.
As a result, the spiral flow generation device 2 generates a spiral flow and sends the spiral flow into the pipe 68 via the conduit adapter 1, and the spiral flow and the parachute 67 that receives the spiral flow cause the cable 63 to pass through. The inside of the pipe 68 can be delivered while drawing in from the port 7.

The insertion start side compressor 52 and the relay side compressor 52 may be sequentially driven as described above, but may be simultaneously driven. Also, if possible, the cable 63 can be sequentially inserted into the pipe 68 in a continuous state with a plurality of relay points. Then, after the work of inserting the cable 63 into the pipe 68 is completed, the conduit conduit adapter 1 is removed from the pipe 68 and the relay pipe 69, and the fastener 10 is unlocked as described above to connect the conduit pipe 1. By separating the passage 3, the conduit conduit adapter 1 can be removed from the middle portion of the cable 63 without cutting the cable 63.

Next, another usage example in which the cable is inserted into the pipe installed across the handhole (or manhole) will be described. In the above-mentioned use example, the spiral flow introducing pipe line 18 of the conduit pipe adapter 1 is directly connected to the connecting pipe 31 of the spiral flow generating device 2. However, the feature of this use example is as follows. As shown in FIG. 8, the spiral flow introducing pipe 18 of the conduit pipe adapter 1 is connected to the connecting pipe 31 of the spiral flow generating device 1 via the hose 70 having the same connection structure as above.
The spiral flow generation device 2 can be arranged on the ground, and the other procedures are the same as the use example shown in FIGS. 5 to 7.

According to this example of use, since the spiral flow generator 2 is arranged on the ground, it is possible to insert the cable 63 or the like into the pipe 68 or the like even if the handhole 65, the manhole or the like is narrow. it can.

The second embodiment of the present invention will be described below with reference to the drawings. FIG. 9 is a partially cutaway side view showing a conduit conduit adapter according to a second embodiment of the present invention, which is connected to a spiral flow generator.

In the present embodiment, the same parts as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted, and a different structure will be described. In the first embodiment, the conduit 3 for wire passage is formed in a straight tube shape, and the conduit 18 for introducing spiral flow is inclined with respect to the conduit 3 for wire passage. On the other hand, the feature of the present embodiment is that, as shown in FIG. 9, the conduit 3 has a conduit 7 into which the cable 63 and the like are inserted, and a conduit 8 through which the cable 63 and the like are delivered. So as not to face each other, the angle is 90 to 150 degrees, and the bending radius is about 5D or more.
Is formed so as to substantially face the wire transmission port 8 in the conduit 3 for passage.

According to this embodiment, the cable 63 and the like can be easily inserted into the conduit 3 from above the handhole 65 and the like, the cable 63 and the like can be easily handled, and the workability is improved. There is an advantage that can be.

The third embodiment of the present invention will be described below with reference to the drawings. FIG. 10 is a partially cutaway side view showing a conduit adapter for a wire according to a third embodiment of the present invention, which is connected to a spiral flow generator.

In this embodiment, the first and second
The same parts as those of the embodiment are given the same reference numerals and the description thereof will be omitted, and different configurations will be described. In the above-mentioned second embodiment, the conduit line 3 is bent,
The conduit 18 for introducing the spiral flow is the wire outlet 8 of the conduit 3 for passage.
It is formed in a straight tube with the side. On the other hand, the feature of the present embodiment is that, as shown in FIG. 10, the conduit 3 for wire passage is bent and the conduit 18 for introducing the spiral flow is formed.
Is located at a point where the inflow port 19 is bent so as to face substantially the same side as the line opening 7 in the line 3 for the line.

According to the present embodiment, the cable 63 and the like can be easily inserted into the conduit 3 from above the handhole 65 and the like, the cable 63 and the like can be easily handled, and the workability is improved. In addition, the spiral flow introducing pipe 18 is connected to the connecting pipe 31 of the spiral flow generating device 2.
In the case of directly connecting to, there is an advantage that the space required for working in the handhole 65 and the like can be small.

The fastener 10 and the spiral introduction conduit 1
The connection structure for the connection pipe 31 and the like of 8 is not limited to the above embodiment. The spiral flow is not limited to air, but nitrogen gas or the like can be used. In addition, the present invention can be modified in various ways without departing from the basic technical idea thereof.

[0046]

As described above, according to the present invention, the spiral flow introducing conduit is connected to the spiral flow generating device, the conduit is separated by releasing the fastener, and the separated conduit is connected. After inserting the linear body in the pipe line from a direction parallel to the axis, the conduit line is fixed with a fastener, and the conduit line is airtightly connected to the end of the pipe line. After that, by driving the spiral flow generator to send a spiral flow of gas from the spiral flow introduction pipe to the conduit for pipe,
The linear body can be positioned in the central portion of the conduit and delivered while being drawn into the conduit for wire passage. In this way, the linear body can be inserted into the conduit for the wire in a direction parallel to the axial direction, and the conduit for the wire can be removed from the linear body at the intermediate portion of the linear body. Therefore, the preparation work of the linear body can be performed in parallel with other preparation work, and furthermore, the operations such as the removal of the linear body and the change of the direction can be easily performed, and the passage of the linear body can be performed. The line distance can be extended, the number of connection points between the linear bodies can be reduced, and the linear bodies can be easily and safely fed into the pipeline in a narrow place such as a handhole or a manhole. Therefore, the construction efficiency can be improved, the construction cost can be reduced, and the quality and reliability of the linear body can be improved.

Further, the above-mentioned conduit for passage is formed in a straight tube shape,
By forming the spiral flow introduction pipe line so as to be inclined with respect to the conduit line, it is possible to simplify the configuration and manufacture at low cost.

Further, the conduit for the wire is bent so that the wire inlet for inserting the linear body and the wire outlet for delivering the wire do not face each other, and the spiral flow introducing pipe is used for the wire. By forming the linear body so as to substantially face the wire outlet, the linear body can be easily inserted into the conduit for pipes from above, the linear body can be easily handled, and the construction efficiency can be further improved. It can be further improved.

Further, the conduit line is bent so that the wire inlet for inserting the linear body and the wire outlet for delivering the linear body do not face each other, and the inlet side of the spiral flow introducing pipe line is formed. By directing the wire body to the same side as the wire passage opening in the wire conduit, the wire can be easily inserted into the wire conduit from above, and the wire can be handled easily and the construction efficiency can be improved. In addition, the work space can be reduced in a handhole or the like when the spiral flow introducing pipe is directly connected to the spiral flow generating device.

Further, since the above-mentioned conduit for passage has a spiral flow backflow prevention plate which narrows the passage opening, it is possible to prevent the flow velocity of the spiral flow from being weakened, and to improve the delivery efficiency of the linear body. Can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a conduit adapter for a wire according to a first embodiment of the present invention, which is connected to a spiral flow generating device.

FIG. 2 is a view taken along the line AA of FIG. 1, showing the conduit adapter for the same line.

FIG. 3 is a view showing the conduit conduit adapter for the same line, taken along the line AA of FIG. 1 in a state where the conduit line is separated.

FIG. 4 is a partially cutaway side view showing the conduit adapter for the same wire and showing a connection portion before being connected to the spiral flow generation device.

FIG. 5 is an explanatory view of an example of use in which a conduit adapter for the same line is shown and a cable is inserted into a pipe installed between handholes.

FIG. 6 is an explanatory view of a usage example showing a conduit adapter for the same wire, in which a cable is not inserted into a pipe installed between handholes but is inserted in a continuous state.

FIG. 7 is an explanatory view of another example of use in which the conduit adapter for the same wire is shown and is inserted in a continuous state without connecting a cable to a pipe installed between handholes.

FIG. 8 is an explanatory view of another usage example showing the conduit adapter for the same line, in which a cable is inserted into a pipe installed between hand holes.

FIG. 9 is a partially cutaway side view showing a conduit adapter for a wire according to a second embodiment of the present invention, which is connected to a spiral flow generating device.

FIG. 10 is a partially cutaway side view showing a conduit adapter for a wire according to a third embodiment of the present invention and being connected to a spiral flow generating device.

FIG. 11 is a partially cutaway side view showing a spiral flow generation device used in a conventional wire passing device.

FIG. 12 is an explanatory diagram of a usage example in which a cable is inserted into a pipe installed between handholes by a conventional wire passage device.

[Explanation of symbols]

 1 Pipe line adapter 2 Spiral flow generation device 3 Pipe line 6 Spiral flow backflow prevention plate 7 Passage port 8 Transmission port 10 Fastening tool 18 Spiral flow introduction pipe line 52 Compressor 63 Cable 65 Hand hole 67 Parachute 68 Piping

Claims (5)

[Claims] 1. A conduit for pipes divided along an axial direction, a fastener for fixing the conduit for pipes in a separable manner, and one end of which is connected to the pipe for conduit, A spiral flow introducing pipe for guiding a spiral flow due to the gas sent from the spiral flow generating device to the conduit for passing a linear body inserted into the conduit for pipe; Pipe line adapter equipped with. 2. The conduit for passage according to claim 1, wherein the conduit for passage is formed in a straight tube shape, and the conduit for introducing spiral flow is formed to be inclined with respect to the conduit for passage. adapter. 3. The conduit for bending the wire is bent so that the wire inlet for inserting the linear member and the wire outlet for delivering the linear member do not face each other, and the spiral flow introducing conduit is the conduit. The conduit adapter according to claim 1, wherein the conduit conduit adapter is formed so as to substantially face a wire outlet of the conduit. 4. The conduit for bending is bent so that the conduit for inserting the linear body and the conduit for delivering the linear do not face each other, and the inlet side of the conduit for introducing spiral flow is The conduit adapter for a wire according to claim 1, which is directed to the same side as the conduit opening in the conduit for the wire. 5. The conduit conduit adapter according to claim 1, wherein the conduit conduit has a spiral flow backflow prevention plate for narrowing the conduit opening.