JPH08275363A - Joint duct for burying cables - Google Patents

Abstract

PURPOSE: To instantaneously meet the change on the site of work execution and to quickly perform safe and firm burying work execution with the rotation of a duct around the axis in the case of cable connection by making use of the circular form in cross section of the duct pipe. CONSTITUTION: A joint duct is composed of a duct 2 circular in cross section consisting of a fume pipe made of concrete wherein reinforcing rods are arranged and a group of cable pipes 4, and for the duct pipe 2, a through hole 3 is bored in the drum. A group of cable pipes 4 consist of a plurality of cable pipes 5 and 5 made of optional material, and the cable pipes 4 in a group constitute a joint duct 1, being inserted and accommodated in the duct 2, and the duct 2 is rotated around the axis, making use of the drum circular in cross section, and the through hole 3 is shifted to the position of the opening 5c by the cutting of the required cable pipe 5 so as to oppose them. This way, it becomes easy to displace the through hole to the optional position of the required cable pipe for adjustment, and further they come close to each other, being multiplied by the displacement of the cable pipe, and they can agree with each other, which contributes greatly to the shortening of the term of works.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to communication, power transmission, signal networks,
It relates to a combination of a groove body for burying various cables such as an information network in the ground and a cable pipe to be housed in this, and in particular, a common groove for burying cables that makes it easy to insert and remove the required cables individually and to bury them. Regarding

[0002]

2. Description of the Related Art In Japan, toward the 21st century, the development of information and communication infrastructure such as the development of optical fiber networks has become an issue in response to the equal development of the national land, the sustainable development of the economy, and the aging society. There is.

Entering this multimedia age,
In addition to existing electric wires, telephone lines, and signal networks, cables such as optical fiber cables are stretched over the road, so that these utility poles and overhead lines become obstacles when the vehicle is running or walking, and it is easy to disconnect in the event of a disaster. It is said that it not only hinders rescue and fire fighting activities, but also damages the cityscape.

Therefore, it has been proposed to utilize the underground space of the road to underground by using a common groove that accommodates these cables.

The conventional joint groove accommodates a cable tube for inserting and supporting each cable in the groove body for each type, and a partition for accommodating and supporting each cable in the groove body along the length direction for each type. What was divided by the wall was used.

Any joint groove is provided by interposing an opening member such as a box in the joint portion between the laid groove bodies, and all the various cables are collectively put in and taken out in the opening portion, or It was a joint groove structure with a groove tube.

In addition, in the joint pipe using these cable pipes and partition walls, there is a joint groove for changing the sectioned area by the required cable pipes and partition walls upward so that the necessary cables can be easily put in and out, but both are buried. Since it is an immobile fixed-type section support manufactured at the factory according to the site, it is inconvenient because it requires a lot of construction time because the section area due to the cable pipes and partition walls cannot be freely displaced at the buried site according to changes in the site situation. It was a composition.

Moreover, in the structure in which the various important cables that are buried and housed as described above are intensively taken in and out at the entrance / exit opening provided in the joint portion of the common groove, each cable is damaged at once at the time of a disaster, and all the cables are damaged. May become inoperable.

Further, the central branch, which is the cable entry / exit of the common groove, may easily break and break all the cables, which is a danger to crime.

[0010]

As described above, in the conventional joint groove, a separate opening member is provided at the joint between the groove bodies exclusively at the time of construction of the joint groove, and the lid hooking portion is opened so as to open the cable. Due to the centralized branching structure that puts in and out, there were many problems such as simultaneous damage of each cable at the time of a disaster and danger of crime prevention.

Further, although the section area of the common groove by the cable tube or the like is displaced in combination with the groove body, each section area is fixedly shaped, and the inlet / outlet port of the cable is fixed upward. Since it has a branch structure, it also had problems such as not being able to immediately respond to changes at the burial site.

An object of the present invention is to solve the problems in these conventional joint grooves for burying cables.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a required length having a circular cross section in a common groove accommodated in a cable pipe group consisting of a plurality of cable pipes in a groove body buried in the ground. When a single or a plurality of through holes are bored on the barrel side of a groove tube made of a tubular body and the groove tubes are connected sequentially along the length direction, a cable tube to be taken in and out of a cable tube group to be accommodated Accordingly, a combination of the groove tube and the cable tube in the cable burying common groove is proposed in which the required groove tube is rotated with respect to the axis so that the through hole faces the cable tube.

[0014]

With the circular cross section of the groove tube, the through hole is moved together with the groove tube to the position of the required cable tube in the group of cable tubes to be housed so that the through hole is opposed to the axis of the cable tube group at the time of connection.

The required cable tube of the cable tube group is displaced to the upper side by utilizing the flexibility, and the groove tube is also rotated together, so that the required cable and the transparent tube are transparent with a minimum amount of flexible displacement and rotation. The holes face each other.

A large amount of displacement of the required cable pipe can be obtained by synergistically the floating property and the flexibility of the cable pipes bound in a floating state.

In the cable tube group having the central cable tube as the axial tube, the peripheral cable tube is smoothly guided along the trunk side surface of the axial tube and is displaced in an orderly manner.

The space provided between the peripheral cable pipes abutting on the central axis pipe of the cable pipe group increases the amount of floating displacement of the cable pipes to obtain a large displacement.

Due to the flexibility, each cable tube of the cable tube group bound by the binding member of the cord is free to move in a portion other than the binding portion and is displaced.

Each cable tube of the cable tube group bundled by the binding member having the honeycomb-shaped receiving holes is flexible so that the binding portion rotates together with the binding member with respect to the axis, and each portion other than the binding portion has each The cable tube is free to move, and the cable tube is displaced at any part.

The connecting portion of the cable pipe group connected at a position other than the connecting portion of the groove pipe is protected by the seamless and solid body side of the groove pipe.

The projecting edge of the through hole is reinforced by dispersing and supporting the support tension of the side wall of the groove tube body in the through hole which is the cavity wall in different directions.

The closed through hole can be struck by breaking the thin closed wall, and is opened as needed to put the cable tube in and out of the groove tube, and is used as an open through hole.

A plurality of through holes bored on the barrel side within the axis of 180 degrees can be made to face above the horizontal axis of the groove tube when the groove tube is connected and buried, and the lower side of the horizontal axis line of the groove tube can be seen. Even though it is temporarily buried and installed firmly, the through hole is exposed on the upper side.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cable burying common groove according to the present invention will be described with reference to the drawings.

1 to 14 are explanatory views of a common groove for embedding a cable in which the present invention is carried out, and FIGS. 1 and 2 are partly showing an embodiment of a combination of a groove pipe and a cable pipe in the common groove. FIG. 3, FIG. 3 and FIG. 4 are vertical sectional front views of essential parts showing an embodiment of a common groove, FIGS. 5 and 6 are perspective views showing an embodiment of a groove tube in a common groove, and FIG. 8 is a vertical cross-sectional side view, FIG. 8 to 10 are all perspective views showing an embodiment of the cable pipe group in the common groove, FIG. 11 is a partial perspective view showing flexibility of the cable pipe, and FIG. FIG. 13 is a partially cutaway side view showing an embedded state of the groove, FIG. 13 is a vertical sectional front view of an essential part showing an embedded installation state of the joint groove, and FIG. 14 is an essential part showing an embodiment of the cable pipe displacement in the embedded state of the joint groove. It is a vertical side view of FIG.

Reference numeral 1 is a common groove, which is composed of a groove tube 2 having a circular cross-section made of a concrete-made fume tube with reinforcing bars and a cable tube group 4.

The groove tube 2 is formed of a concrete-made fume tube with reinforcing bars, and a through hole 3 is bored on the body side thereof, and a plurality of through holes 3 and 3 are formed as shown in FIGS. Groove tube 2 provided
Then, the through holes 3 and 3 are arranged at intervals along the length direction of the groove tube 2, and they are arbitrarily bored such that they are provided so as to be offset within an angle of 180 degrees with respect to the axis.

As shown in FIGS. 2, 3, 5, and 13, the through hole 3 is formed by projecting a cylindrical projecting edge 3b on the outer peripheral side of the through hole 3 on the barrel tube 2 side. Effective in strengthening the weakness due to the cavity wall of the through hole 3 on the barrel side of the groove tube 2 by exerting the support tension dispersed in the groove wall of the groove tube 2 integrally with the side wall of the groove tube 2 and in the direction orthogonal to the side wall of the groove tube 2. There is.

Further, by constructing a part of the through hole 3 of the groove tube 2 by closing the thin-walled closing wall 3a, the closing wall 3a is crushed and opened as needed to be used as the through hole 3. To do.

The cable pipe group 4 is composed of a plurality of cable pipes 5 and 5 made of an arbitrary material, and the cable pipe group 4 is inserted and accommodated in the groove pipe 2 to form a common groove 1, as shown in FIG. As described above, the groove tube 2 is rotated with respect to the axis by using the round cylinder having the circular cross section, and the through hole 3 is moved to the position of the opening 5c formed by cutting the required cable tube 5 so as to face each other.

Another embodiment of the cable tube group 4 uses a flexible cable tube 5 made of a synthetic resin material such as vinyl chloride as shown in FIG. 11, and utilizes the bending performance of the cable tube 5. In a loose state, the binding members 6 made of a cord 6a made of an arbitrary material are bundled at appropriate places.

Further, as shown in FIGS. 4 and 9, the receiving holes 6 are formed in a honeycomb shape.
In the bundling member 6 having the holes b and 6b, the honeycomb-shaped receiving holes 6b,
The cable pipes 5 and 5 are movably inserted into 6b to bundle the appropriate places, and the required cable pipe 5 is moved up and displaced between the binding members 6 and 6 by utilizing the flexibility and floating structure of the cable pipe 5. be able to.

The receiving hole 6b of the bundling member 6 is formed to have a sufficient size for the cable tube 5 to move freely.

As shown in FIGS. 2 to 4 and 8 to 10, the cable pipe arranged at the center of the cable pipe group 4 composed of a plurality of cable pipes 5 and 5 is constructed as a straight shaft pipe 5a, whereby The peripheral cables 5 and 5 attached along the axis of the tube 5a can be smoothly displaced by being guided by the body side surface of the axis tube 5a.

A space 5 is provided between the peripheral cable pipes 5 and 5.
By providing b, it is effective in that the playability is increased and a larger displacement can be obtained.

As shown in FIG. 10, honeycomb-shaped receiving holes 6b, 6b
In the cable tube group 4 by the binding member 6 provided with the shaft tube 5
The bundling member 6 can be rotated around a as an axis, and the peripheral cable pipes 5 and 5 are twisted at the bundling member 6 part to be sequentially displaced, so that the cable pipes 5 and 5 are stretched and flexible. To fix.

In any of the binding configurations, it is necessary to take in the predetermined cable tube 5 to be displaced for a long time, and at the time of burying the cable tube 5 inserted and housed in the groove tube 2, the predetermined cable tube 5 is bent and displaced at the same time. , Adjust the length.

When the cable tube group 4 is inserted and housed in the groove tube 2 in the common groove 1 as described above, the through hole 3 is housed by utilizing the rotatability of the groove tube 2 having a circular cross section as shown in FIG. Cable tube 5 required to take in and out of cable tube group 4
The groove tube 2 is rotated with respect to the axial center so that the groove tube 2 and the groove tube 2 coincide with each other.

Further, as shown in FIGS.
Simultaneously with the rotation, the required cables 5 in the cable tube group 4 are drawn together by utilizing their flexibility and movability so as to be displaced toward each other so that the through holes 3 and the required cable tubes 5 are aligned with each other. Becomes

The groove tube 2 has been described as consisting of a reinforced concrete fume tube, but it can be formed of any material as long as it has a pressure resistant structure, for example, a hard synthetic resin material such as polypropylene. be able to.

Further, although the cable tube 5 has been described as being made of a synthetic resin material, it can be made of any other material such as metal, and the cable tube 5 to which flexibility is given is made of, for example, a metal material. It can be used to form a flexible structure.

Next, an example of embedding a cable burying joint groove according to the present invention will be described with reference to FIGS.
The groove pipes 2 and 2 are installed in the excavation groove 11 dug up for burying the pipes so as to be flexibly connected sequentially with the flange portion 2a. , The electric cables 7, the telephone wires 8 and the like are accommodated in the respective cable tubes 5 and 5, and the required cable tube 5 is displaced above the horizontal axis X, X in order to take out the electric wires 7, and at the same time, the displaced cables Opening 5c to be bored in the pipe 5
Then, the required groove pipes 2 are rotated with respect to the shaft center so that the through holes 3 of the groove pipes 2 face each other and aligned with each other, and the excavation groove 11 is temporarily embedded 11a below the horizontal axis of the groove pipes 2 and 2.

Also, the opening 5 of the displaced cable tube 5
The cable tube opening 5 is formed as an open through hole 3 by smashing the closing wall 3a of the closing through hole 3 of the groove tube 2 rotated so as to face c.
A temporary burying 11a is performed so as to face c.

The through hole 3 of the groove tube 2 and the opening 5 of the cable tube 5
Matching c with each other, the high-voltage electric wires 7 of the cable pipe 5 are individually taken out from the groove pipe 2 to fill the common groove 1, and the electric wire 7a passing through the transformer 9 in the box 9a to be installed underground is branched. Pull it into each building at the end.

The connection 5d of the cable pipes 5, 5 is a groove pipe 2, 2
By performing the connection flange portion 2a region at the central portion of the groove pipe 2 away from the connection flange portion 2a, it is unlikely to be affected by unequal subsidence due to crustal movements, so that cutting of the cable can be avoided.

In the through hole 3 provided with the closing wall 3a, the required groove tube 2 is rotated by utilizing the body side having a circular cross section, and the closing wall 3a of the through hole 3 which is on the same side as the required cable tube 5 is tapped. By breaking and opening to form the through hole 3 and individually taking out the electric wires 7 in the required cable tube 5 from the open through hole 3, it is effective in that it is possible to immediately respond to the change of the burial site.

The electric wire 7 drawn out from the common groove 1 is housed in a guide pipe 10 made of an arbitrary material as shown in FIG. 12 and drawn into each building, relay facility, etc. to fill the excavation groove 11,
The common groove 1 is buried under the road 12.

As shown in FIG. 14, a cable body 5 of the common groove 1 is provided in the box body 13 by providing a box body 13 having a top portion 13a which can be opened at the joint portion of the groove tubes 2 and 2. The displacement can be easily switched.

[0050]

As described above, the present invention relates to a combination of a groove tube having a circular cross section in a cable burying common groove and a cable tube group including a plurality of cable tubes. For the cable tube group consisting of each cable tube to be housed, use the circular cross-section of the groove tube with the through hole on the trunk side to rotate the required groove tube with respect to the axis and position it at the required cable tube position. It is characterized in that the through holes of the groove tube can be aligned and the cables can be individually put in and taken out from the groove tube.

Further, by arranging each cable tube of the cable tube group to be displaceable with respect to the rotating groove tube, both the groove tube and the cable tube are displaced with each other, and a large displacement can be achieved with a small amount of mutual displacement. Since the amount can be obtained, the position of the through hole of the groove pipe and the position of the required cable pipe can be smoothly and quickly matched, and the displacement amount of the cable pipe can be small, so that each cable can be inserted and accommodated in the cable pipe. Very easy,
The efficiency of cable insertion and storage work is improved.

Further, in the through hole closed by the closing wall, the through hole can be opened and closed as needed in response to a construction change at the burying site.

In particular, by allowing the through hole to face the required cable tube which is located above the horizontal axis of the shaft by the rotation of the groove tube,
For installation in the excavated trench where the ground is dug up, the lower part of the groove tube below the horizontal axis can be temporarily buried and fixed, so the groove tube can be firmly stabilized in the excavated groove, and It becomes easy to individually take in and out the accommodation cables from the through holes exposed above the horizontal axis of the groove tube.

In addition, in a grooved pipe having a plurality of through holes provided within an angle of 180 degrees above the axis horizontal line, the grooved pipe has all the through holes during the installation process in the excavation groove by adjusting the rotation of the groove pipe. Is exposed to the upper side of the axis horizontal line, and it becomes easier to insert and withdraw each cable individually.

Further, in the cable pipe group in which the cable pipe is attached to the straight shaft pipe, the shaft pipe serves as a guide to smoothly and neatly displace the surrounding cable pipes.

As described above, the common groove for burying a cable of the present invention is a groove tube having a circular cross section in which a through hole is provided on the trunk side with respect to a cable tube group consisting of cable tubes for accommodating various cables at the time of burying construction. By rotating, it becomes easy to adjust the displacement so that the through hole is opposed to the position of the required cable pipe, and further synergistically with the displacement of the cable pipe, it is possible to make them more easily coincident with each other and match each other. Since it is possible to quickly respond to changes at the construction site, it greatly contributes to shortening the construction period.

Moreover, the conventional centralized branching structure of various cables, which has the problems of disaster prevention and crime prevention of various cables, can be eliminated, and the cables to be accommodated in the cable pipe can be individually taken in and out as needed, which is safe. In addition, it has the effect of being able to jointly bury various cables securely and reliably.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a combination of a groove tube and a cable tube in a cable burying common groove embodying the present invention.

FIG. 2 is a vertical cross-sectional front view of an essential part of a common groove.

FIG. 3 is a vertical cross-sectional front view of essential parts showing another embodiment of the common groove.

FIG. 4 is a partial perspective view showing a combination of a groove tube and a cable tube in another embodiment of the common groove.

FIG. 5 is a perspective view showing an embodiment of a groove tube in a common groove.

FIG. 6 is a perspective view showing another embodiment of the groove tube.

FIG. 7 is a vertical sectional side view of a main part of the groove tube.

FIG. 8 is a partial perspective view showing an example of a cable tube group in a common groove.

FIG. 9 is a partial perspective view showing another embodiment of the cable tube group.

FIG. 10 is a partial perspective view showing another embodiment of the cable tube group.

FIG. 11 is a partial perspective view showing the flexibility of the cable tube.

FIG. 12 is a partially cutaway side view showing a buried state of a cable burying common groove embodying the present invention.

FIG. 13 is a vertical cross-sectional front view of essential parts showing a cable burying joint groove in the burying process.

FIG. 14 is a vertical cross-sectional side view of a main part showing an example of displacement of the cable pipe in a state where the common groove is buried.

[Explanation of symbols]

 1 common groove 2 groove tube 3 through hole 3a closing wall 4 cable tube group 5 cable tube 5a shaft tube 5b space 5d connection part 6 binding member 6a string 6b honeycomb-shaped receiving hole

Claims (11)

[Claims] 1. A common groove for accommodating a cable pipe group consisting of a plurality of cable pipes in a groove body buried in the ground, wherein a single groove is formed on the body side of the groove pipe having a circular cross section and having a required length. When forming one or a plurality of through holes and sequentially connecting the groove pipes along the length direction, the required groove pipes are rotated with respect to the axial center corresponding to the cable pipes to be taken in and out of the group of cable pipes to be accommodated. A joint groove for burying a cable, which is moved so that the through hole faces the cable tube. 2. The joint groove for cable embedding according to claim 1, wherein the cable tube group is configured to be flexible so as to displace each cable tube. 3. The cable burying joint groove according to claim 2, wherein the cable tube group is formed by bundling flexible cable tubes made of a synthetic resin material such as vinyl chloride so as to be displaceable in a floating state. 4. The joint groove for cable embedding according to claim 2, wherein the cable pipe group has a centrally arranged cable pipe as a straight shaft pipe, and a cable pipe is attached to the periphery thereof. 5. The joint groove for cable embedding according to claim 4, wherein the cable pipe group is provided with a space between the peripheral cable pipes. 6. The cable burying joint groove according to claim 3, wherein the cable tube group is bundled at required locations with a cord binding member made of an arbitrary material. 7. The joint groove for cable embedding according to claim 3, wherein the cable tube group is bundled by inserting a required portion into a binding member provided with a honeycomb-shaped receiving hole made of an arbitrary material. 8. The cable burying joint groove according to claim 1, wherein the cable tube group is connected at a location other than a joint area of the groove tube. 9. The cable burying joint groove according to claim 1, wherein the through hole is provided with a cylindrical projecting edge on the outer periphery. 10. The whole or a part of the through hole is configured to be closed by a closed wall having a small wall thickness so as to be broken and opened.
Any one of the joint groove for cable burying. 11. The cable burying joint groove according to claim 1, wherein the plurality of through holes are formed on the trunk side within an axis of 180 degrees.