JPH08154331A - Underground cable layout block - Google Patents

Abstract

PURPOSE: To house both an electric power cable and a communication cable through a certain separation without interference. CONSTITUTION: A cable block is composed of a pipe body block 2 of the predetermined length placed and fixed at the bottom part of the groove cut at the underground area and a radially dividing body block 3 to be inserted in the longitudinal direction into the pipe body block 2. The radially dividing body block 3 integrates an axial hole located at almost the center of the pipe body block 2 and a plurality of separating means 13 radially arranged at the circumference of the axial hole. Cables are separately housed into the axial hole portion of the radially dividing body block and a plurality of sections 4 defined by the radially dividing body block 3 and the pipe body block 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable burying block, and more particularly to a precast concrete block for burying electric power, communication cables and the like underground.

[0002]

2. Description of the Related Art Recently, underground installation of electric power and communication cables has been promoted from the viewpoint of environment beautification and installation of electric power and communication cables running in the air, which obstructs traffic. Conventionally, underground pipes are generally used to bury power cables and communication cables underground, but underground pipes may be cast-in-place concrete, such as common grooves, but usually from precast concrete. Become.

[0003] Precast concrete underground buried pipes are generally manufactured as a fume pipe and, for example, a block having a predetermined length and a rectangular cross section and a through hole having a circular cross section formed in the longitudinal direction are produced at the factory. Then, the required plurality will be transported to the site and laid in a line of the required length. Then, there is a specialized one in which box-shaped blocks having holes formed in side walls are intervened everywhere in order to branch and wire electric power and communication cables.

However, it is not preferable to store the power cable and the communication cable together because there is a problem in that the communication cable causes a dielectric and becomes a disturbance, which hinders communication. Each must be stored separately.

Further, even with communication cables, recently, there are cables for cable television (CATV) in addition to telephone lines, so that they can be stored separately from the viewpoint of maintenance and inspection. You will need it.

Therefore, in order to bury electric power and communication cables underground, it is the current situation that electric power companies and telecommunications companies are laying underground pipes independently, and therefore, on roads and urban areas, the laying work of each company is carried out. Often happens before or after.

[0007]

However, since each company independently uses the underground buried pipe, it causes a traffic obstacle, and the underground buried pipe is complicated, so that the proper laying work cannot be performed. Therefore, underground buried objects such as common ditches may be constructed, but common ditches are laid on urban roads, etc., where relatively large construction is easy, and construction is difficult on narrow urban roads, etc. It is difficult.

In view of the above-mentioned circumstances, the present invention provides a cable burying block which can separate a power cable and a communication cable and store them together without causing a harmful effect.

[0009]

DISCLOSURE OF THE INVENTION A cable burying block according to the present invention comprises a tubular block having a predetermined length which is mounted and fixed on a groove bottom opened in the ground, and is inserted into the tubular block in a longitudinal direction. And a plurality of partition walls are integrally formed in a radial arrangement around the shaft hole portion and the periphery of the shaft hole portion. A groove is formed on the inner peripheral surface of the tubular body block, and a part of the partition wall portion is formed longer than the other with an end portion that engages with the groove. The present invention is characterized in that the cables are separated and stored separately in a plurality of compartments that are divided by the holes, the radial division block and the tube block.

[0010]

[Function] A tube block is placed and fixed on the inner bottom of a groove cut on a road or the like, a radial partition block is inserted into the tube block to form a cable burying block, and this is repeated to obtain a required length. In addition to the above, by separately storing and separating the cables in a plurality of compartments formed by the axial hole portion of the radial section block and the radial section block and the tube block, the power cable and the communication cable can be separated. Can be buried underground together.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. As shown in FIG. 1, a cable burying block 1 according to the present invention includes a radial block having substantially the same length as the tubular block 2 in a tubular block 2 made of precast concrete such as a fume pipe having a predetermined length. The body block 3 is inserted, and the cables 5 are separately housed in the compartments 4 partitioned by the radial partition blocks 3.

As shown in FIG. 2, the tubular block 2 has a knockout portion 6 formed of a recess having a required shape at a required interval in the axial direction in a spiral arrangement on the outer peripheral wall, and the knockout portion 6 is a branch cable. To form a draw-out opening for distributing the water to the user and the like.
The window hole can be formed by breaking down. The knockout portion 6 is formed corresponding to each of the compartments 4 formed by the partition wall portion 13. However, it is sufficient that the opening through which the branch cable can be drawn out can be easily formed without forming the knockout portion 6. Furthermore, a special pipe block for extracting a branch cable can be easily provided separately.

The tube block 2 is not limited to a fume tube, but is a so-called arched tube block 8 having a so-called arch-shaped cross section as shown in FIG.
The pipe block 9 of P, the so-called dual pipe block 10 as shown in (C), or the so-called heavy pressure pipe block 11 as shown in (D) may be used.

As shown in FIG. 4, the radial section block 3 has a shaft hole 12 located substantially at the center of the tube block 2.
And a plurality of partition portions 13 radially arranged around the shaft hole portion 12. The partition portion 13 is formed to be slightly shorter than the radius of the tube block 2 and can be inserted into the tube block 2. The number of partition wall portions 13 is arbitrary, and as shown in FIG. 4 (B), the partition wall portion 13 consisting of eight sheets is formed, and as shown in FIG. 5 (A), the partition wall portion 13 consisting of five sheets is formed. Or
As shown in (B), four partition walls 13 may be formed.

Therefore, when the cable burying block 1 is laid, the tubular block 2 with the radial division block 3 inserted therein is placed and fixed on the bottom of a groove excavated in the ground. Alternatively, the tubular block 2 is placed and fixed on the bottom of the groove, and the radial section block 3 is inserted therein. By repeating this in the longitudinal direction, a plurality of tube blocks 2 and radial section blocks 3 are laid to a required length, and for example, a power cable is inserted into the axial hole of the radial section block 3 in the tube block 2. A communication cable is inserted and stored in each of the plurality of compartments 4 formed by the partition 13. Then, when the branch cable is pulled out for distribution to the user, the bottom 7 of the concave portion is broken to form a window hole, and the branch cable is taken out.

If the plurality of cable burying blocks 1 are simply connected in series, the compartments 4 and the knockout portions 6 may be displaced from the corresponding positional relationship, which may hinder the drawing of the branch cable. A situation may occur in which the radial section blocks 3 are twisted with each other and the compartments 4 are not aligned.

Therefore, as shown in FIG. 6A, an appropriate number of grooves 14 are formed on the inner peripheral surface of the tubular block 2, and as shown in FIG.
End portion 15 capable of engaging a part of the partition wall portion 13 with the groove 14 thereof
To have a length.

Further, as shown in FIG. 7, the radial section block 3 is protruded from the tube block 2 by a small dimension S, and the protruding radial section block 3 is inserted into the adjacent tube block 2. Then, the end 15 of the partition 13 is engaged with the groove 14 of the adjacent tube block 2.

Thus, the compartments 4 can be aligned with each other in the direction in which the compartments are arranged, and the compartments 4 and the knockout section 6 can cope with each other without displacement.

Thus, the power cable and the communication cable can be separately housed in the same pipe, and the communication cable can be separately stored in each of the compartments partitioned by the partition wall. Therefore, the telephone line and the CATV line can be housed in the same pipe.

[0021]

As described above, according to the present invention, since the cable burying block accommodates the power cable and the communication cable separately via the partition wall, the underground burying cable can be jointly accommodated, and therefore, can be accommodated. , Civil engineering work for individual companies to dig city streets etc. by itself is reduced, and it is extremely useful from a public point of view without causing traffic obstacles or complications of underground buried pipes buried by each company.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIGS. 2A and 2B are front views of a tubular block, and FIG.
X sectional view (B)

FIGS. 3A, 3B, 3C, and 3D are end views showing examples of a tubular block;

FIG. 4 is a front view (A) and an end view (B) of a radial segment block.

FIGS. 5A and 5B are end views showing examples of radial segment blocks;

FIG. 6 is a longitudinal sectional view (A) and a transverse sectional view (B) of a tube block and a radial section block showing another example of the present invention.

FIG. 7 is a partial cross-sectional front view showing a construction example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cable burying block 2 ... Tube block 3 ... Radial section block 4 ... Division room 5 ... Cable 6 ... Knockout part 12 ... Shaft hole part 13 ... Partition part 14 ... Groove 15 ... End part

Claims (2)

[Claims] 1. A radial partition body comprising a tubular block of a predetermined length, which is mounted and fixed on the bottom of a groove cut into the ground, and a radial partition block inserted in the tubular block in the longitudinal direction. The block is formed by integrally molding a shaft hole portion located substantially in the center of the tubular block and a plurality of partition walls around the shaft hole portion in a radial arrangement. The radial hole block and the radial partition block of the radial partition block are integrally formed. A cable burying block characterized in that cables are separated and stored separately in a plurality of compartments divided into a body block and a pipe block. 2. The groove according to claim 1, wherein a groove is formed on the inner peripheral surface of the tubular body block, and a part of the partition wall portion has an end portion that engages with the groove and is formed longer than the other portions. A cable burying block characterized by being formed.