JP2607855B2 - Cable embedding block - Google Patents

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, power and communication cables have been buried under the ground from the viewpoints of running the power and communication cables in the air and erroneously constructing the power poles and communication cables from the viewpoint of environmental beautification and traffic obstacles. Conventionally, underground pipes are generally used to bury power and communication cables underground, but underground pipes may be cast-in-place concrete, such as common trenches. Become.

[0003] Underground pipes of precast concrete are manufactured by factory production of a general pipe such as a fume pipe and a pipe having a rectangular section with a predetermined length and a through-hole with a circular section in the longitudinal direction. Then, the necessary plurality is transported to the site and laid continuously to the required length. There is a special type in which a box-shaped block having a hole formed in a side wall is interposed at various locations in order to branch and wire a power or communication cable.

However, it is not preferable to house the power cable and the communication cable together, because there is a problem in that the communication cable generates a dielectric to cause disturbance and hinder communication. Each must be stored separately.

[0005] Furthermore, even in the case of communication cables, recently, there are cables such as cable television (CATV) in addition to telephone lines. Therefore, these cables can be separated and stored from the viewpoint of maintenance and inspection. Will be needed.

In order to bury electric power and communication cables underground, it is the present situation that electric power companies and communication companies independently lay underground pipes. Is often done before and after.

[0007]

However, since each company constructs an underground pipe independently, traffic obstruction occurs, and the underground pipes are complicated, making it impossible to carry out proper laying work. For this reason, underground burials such as common ditches may be constructed, but common ditches are laid on relatively large urban roads where construction is easy, and narrow ditches are difficult to construct. It is difficult.

In view of the above circumstances, the present invention provides a cable burying block capable of isolating a power cable and a communication cable and storing them together without causing any adverse effect.

[0009]

According to the present invention, there is provided a cable burying block comprising a tubular block of a predetermined length which is mounted and fixed on the bottom of a trench cut in the ground, and inserted into the tubular block in a longitudinal direction. And a plurality of partition portions are integrally formed in a radial arrangement around the axial hole portion and the axial hole portion located at a substantially central portion of the tubular block. A cable embedding block for separating and storing cables separately in a plurality of compartments divided by the axial hole portion of the radial section block and the radial section block and the tube block; A groove is formed in the peripheral surface, and a part of the partition wall is formed to have an end portion that engages with the groove and to be formed longer than the other. body block Characterized in that substantially a same length. Further, a knockout portion corresponding to each of the compartments is formed spirally in an axial direction on an outer peripheral surface of the tubular body block.

[0010]

[Function] A tubular block is placed and fixed on the inner bottom of a groove cut on a road or the like, and the end of a partition wall portion longer than the other is fitted into the groove.
And insert the radial section block into the tubular block to expose one end thereof from the end of the tubular block.
Fit one end of the new tube block to the exposed end of
And, along with obtaining a required length by repeating this, a plurality of compartments formed by the shaft hole portion and a radial segment body block and tube block radial segment body block, their respective corresponding
By separately storing and isolating the cables to be introduced by destroying the knockout portion to be introduced , both the power cable and the communication cable can be buried underground.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. As shown in FIG. 1, a cable burying block 1 according to the present invention includes a radial section having substantially the same length as a 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 divided by the radially divided body 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 portions 6 are formed corresponding to the respective compartments 4 formed by the partition portions 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 as shown in FIG. 3 (A), a so-called arcuate tube block 8 as shown in FIG.
A tube block 9 of P, a so-called double tube block 10 as shown in (C), or a so-called heavy pressure tube 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 the partition portions 13 is arbitrary, and eight partition portions 13 are formed as shown in FIG. 4B, and five partition portions 13 are formed as shown in FIG. Or
As shown in (B), four partition walls 13 may be formed.

Therefore, when laying the cable burying block 1, the radial block 3 inserted into the tubular block 2 is placed and fixed on the bottom of a groove cut into the ground. Alternatively, the tubular block 2 is placed and fixed on the groove bottom, and the radial division 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 which can engage a part of partition wall portion 13 with groove 14 thereof
Is formed to a length having

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.

In this way, the power cable and the communication cable can be stored separately in the same pipe, and the communication cables can be separately stored in a plurality of rooms defined by the partition walls. Therefore, the telephone line and the CATV line can be housed in the same pipe.

[0021]

According to the present invention described above, since the cable burying block stores the power cable and the communication cable separately through the partition wall, the underground buried cable can be stored jointly. Of course, the number of civil works for individual companies digging down urban roads etc. alone is reduced, and it is extremely beneficial from a public point of view without traffic obstacles and complicated underground pipes buried by each company alone ,
At the time of burial, the radial block
Insert one end to expose one end
Fit the end of the new tube block into the
So that each compartment can be aligned with each other in the direction
In both cases, the position of each knockout section and each compartment is shifted
I can respond without.

[Brief description of the 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)

(57) [Claims] 1. A tubular block having a predetermined length which is mounted and fixed on the bottom of a groove cut in the ground, and a radial block inserted into the tubular block in a longitudinal direction. The block is formed by integrally forming a shaft hole located at a substantially central portion of the tube block and a plurality of partition portions in a radial arrangement around the shaft hole, and the shaft hole and the radial section of the radial section block are formed. In a cable burying block that separates and stores cables separately in a plurality of compartments divided by a body block and a tube block, a groove is formed on an inner peripheral surface of the tube block, and A part of the cable has an end portion engaging with the groove, and is formed to be longer than the other, and further, the axial length of the radial segment block is substantially the same as that of the tube block. Buried block. 2. The cable burying block according to claim 1, wherein a knockout portion corresponding to each of the compartments is formed spirally in an axial direction on an outer peripheral surface of the tubular block.