JPH10325167A - Multifunctional manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent entrance of moisture or the like into a storage hole by providing, at the top of a lower skeletal manhole of a large bore, a hole for ascending/descending and for loading materials and a communications cable branch box storage hole, in such a way that the holes are parallel to each other. SOLUTION: The ground is dug deep, rubble stones 2 are laid, and a floorboard 3 is installed thereon. A first straight-wall pipe 4 comprising skeletal blocks forming a lower skeletal manhole is provided on the floor board 3, and a floor board 5 is installed on the first straight-wall pipe 4. Second and third straight-wall pipes 6, 7, an upper straight-wall pipe 8, first and second adjustment rings 9, 10, and a lid receiving frame 11 are stacked on top of the floor board 5 to form a hole C for ascending and descending and for loading materials. Further, a fourth straight wall pipe 12, an upper straight wall pipe 13, a third adjustment ring 14, and a lid receiving frame 15 are stacked on top of the floor board 5 to form a communications cable branch box storage hole D, to form a multifunctional manhole 1. Therefore, moisture, odor, gas, and the like from a manhole main body can be prevented from entering the storage hole D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided in the middle of an underground road network, such as a water and sewage pipe network, an underground communication network, an underground common channel network, or at a branch point between a main pipe (main line) and a branch pipe (branch line). Related to multifunctional manholes.

[0002]

2. Description of the Related Art Recently, it is said that it is necessary to construct an underground pipeline network for communication cables in order to bury communication cables such as optical fiber cables underground. However, there is a problem that the cost required for constructing the underground pipeline network for the communication cable is extremely high. On the other hand, in order to solve this problem, a method of laying a communication cable in each home using a water supply and sewage pipe network which is recently provided in an urban area has been considered.

[0003] In any of the above-mentioned underground pipeline networks or sewage piping networks, in order to draw communication cables into individual houses, a branch branch cable and a house line branched from a communication main line cable are used. It was necessary to draw in individual houses.

[0004] As described above, in branching a branch branch cable from a communication main line cable, for example, Japanese Patent No. 257
As shown in Japanese Patent No. 4195, a manhole is used. In this technology, a branch connection box for a communication cable consisting of an inner cover and an outer cover is attached to the manhole cover of a manhole whose opening is reduced using a sloping wall tube at the top, and a branch connection machine is installed in the branch connection box. This is a structure in which a communication cable winding drum is housed.

[0005]

However, the above-mentioned known technique has an advantage that the existing sewer manhole can be used as it is and a branch connection box for a communication cable can be attached to the lid of the sewer manhole. ing.
Further, this known technique has a structure in which an upper sloping wall tube in which an upper portion forming a neck portion of a manhole gradually becomes smaller in diameter is left as it is.

Further, in connection work of a communication cable and work of branching a branch / branch cable from a communication main line cable, a branch connection box of a communication cable attached to a manhole cover is removed from the manhole cover, and the communication wire wound around the drum. This is a structure that can be implemented after the cable is pulled out of the manhole while being pulled out.

However, in the above configuration, since the branch connection box for the communication cable is attached to the cover of the manhole body, moisture, odor, gas, etc. of the manhole body may enter the branch connection box for the communication cable, or the branch of the communication cable. The worker during the connection work is undesirably exposed to moisture, odor, gas and the like of the manhole body.

If the iron cover of the manhole is relatively large in diameter and heavy, it becomes difficult to open and close the iron cover by hand, so that the work requires a large amount of work such as using equipment such as a forklift. May be.

The multifunctional manhole according to the present invention is a completely new technology developed in view of the above-mentioned various conventional structures, and particularly, is provided above and below the manhole having a large inner diameter to communicate with the hall for both lifting and lowering and carrying equipment. By providing the cable branch box storage holes in parallel with each other, it is possible to prevent moisture, odor, gas, etc. of the manhole body from entering the communication cable branch box storage holes, and
A multi-function manhole that is configured so that the iron lids of the lift / equipment combined use hall and the communication cable branch box storage hall can be relatively small in diameter and light in weight, and thereby can be easily opened and closed. Offering technology.

[0010]

SUMMARY OF THE INVENTION A multifunctional manhole according to the present invention is a technique which fundamentally improves the above-mentioned conventional problems, and the gist of the first invention is to provide a lower frame manhole having a large inner diameter. This is a multi-function manhole characterized by having a hole for both raising and lowering and carrying equipment and a hole for storing a communication cable branch box at an upper portion thereof.

[0011] According to the above configuration, a communication cable branch box storage hole capable of exclusively storing only a communication cable branch box (connection box) can be independently provided in a part of the manhole. Prevents the moisture, odor, gas, etc. of the manhole body from entering the branch box storage hole for communication, and provides a good working environment when connecting and connecting the communication cable with the communication cable branch box. Since a relatively small diameter and light weight can be used for each iron cover of the cable branch box storage hole, the iron cover can be easily opened and closed.

[0012] Further, since the communication cable branch box storage hole is a facility that is different from the sewage system and is involved by a different manager, security can be easily achieved by locking the communication cable branch box storage hole. .

The gist of the second invention of the multifunctional manhole according to the present invention is that the hole for both raising and lowering and carrying equipment and the communication cable branch box housing hole are provided apart from each other. This is a multifunctional manhole according to the first aspect of the present invention.

[0014] According to the above-described structure, the hall for lifting and lowering the equipment and the hole for storing the communication cable can be separately and independently assembled on the upper part of the lower skeleton manhole, and the maintenance can be performed separately.

[0015] The gist of the third invention of the multifunctional manhole according to the present invention is that the hole for both raising and lowering and carrying equipment and the hole for storing the communication cable branch box are provided adjacent to each other via a partition wall. The multifunctional manhole according to the first aspect of the present invention is characterized in that:

According to the above construction, the ascending and descending and equipment carrying hole and the communication cable branch box storage hole are adjacent to each other via the partition wall, so that the ascending and descending and equipment carrying hole and the communication cable branch box are provided. The work space in the storage hall can be relatively large. Further, the ascending / descending and equipment carrying-in hole and the communication cable branch box housing hole which are adjacent to each other via the partition wall can be integrally assembled, and the assembling workability is good.

Further, the gist of the fourth invention of the multifunctional manhole according to the present invention is that a partition wall provided between the lift / lower and equipment carrying-in hall and the communication cable branch box housing hole is detachable. A multifunctional manhole according to a third aspect of the present invention, which is formed of a wall.

According to the above-mentioned structure, by removing the blocking wall as necessary, the hall for both lifting and lowering the equipment and the communication cable branch box storage hole are communicated with each other, thereby significantly increasing the space for work and the like. I can do it.

The gist of the fifth invention of the multifunctional manhole according to the present invention is that a communication cable branch box is mounted in the communication cable branch box storage hole, and the lower frame manhole and a horizontal joint connected thereto are provided. Any one of the first to fourth inventions, wherein a communication main line cable or a branch branch cable laid in a pipeline is connected to the communication cable branch box.
The multifunctional manhole described in the above.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a multifunctional manhole according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional explanatory view showing a first embodiment of a multifunctional manhole according to the present invention.
FIG. 2 is an explanatory plan view showing a first embodiment of the multifunctional manhole of the present invention, FIG. 3 is an explanatory longitudinal sectional view showing another configuration of the first embodiment, and FIG. FIG. 5A is an explanatory plan view showing a multifunctional manhole according to a second embodiment of the present invention, and FIG.
FIG. 5A is a vertical cross-sectional view taken along the line AA of FIG. 5A, and FIG.
FIG. 6 is a vertical sectional view taken along the line BB of FIG. 6, FIG. 6 is an explanatory longitudinal sectional view showing a third embodiment of the multifunctional manhole of the present invention, and FIG. 7 (a) shows a third embodiment of the multifunctional manhole of the present invention. Plane explanatory view,
FIG. 7B is a vertical sectional view taken along the line AA of FIG.
FIG. 8C is a vertical sectional view taken along the line BB of FIG.

In FIGS. 1 and 2, reference numeral 1 denotes a multifunctional manhole according to the present invention, which is in the middle of an underground road network such as a water and sewage pipe network, an underground communication network, an underground common channel network, or a main pipe. It is provided at a branch point between a trunk line) and a branch pipe (branch line).

The multifunctional manhole 1 is provided with a hole C for both lifting and lowering and equipment and a hole D for storing a communication cable branch box at the upper part of a manhole body E composed of a lower frame manhole having a large inner diameter. In addition, it is possible to prevent the moisture, odor, gas, etc. of the manhole body E from entering the communication cable branch box storage hole D, as well as to lift and lower equipment and carry in the equipment C and the communication cable branch box storage hole D respectively. A lid having a small diameter and light weight can be used, so that the iron lid can be easily opened and closed.

Also, by locking the communication cable branch box storage hole D, workers having different purposes, such as outsiders and sewer administrators, can enter the communication cable branch box storage hole D. Can be prevented and safety can be ensured.

As shown in FIG. 1, a multifunctional manhole 1 is formed by digging deep in the ground and laying a rock stone 2 on which a bottom plate 3 is installed, and a lower body manhole having a relatively large inner diameter is placed on the bottom plate 3. A first straight wall pipe 4 made of a skeleton block to be formed is provided, and a hole C for both lifting and lowering and equipment and a branch box storage hole D for a communication cable are arranged in parallel and spaced apart from each other. A floor slab 5 is provided.

On the upper part of the floor slab 5 corresponding to the hall C for both raising and lowering and carrying in equipment, a second straight wall pipe 6 having the same inner diameter is provided.
Third straight wall pipe 7, Upper straight wall pipe 8, First adjusting ring 9, Second straight wall pipe
The adjusting ring 10 and the lid receiving frame 11 are respectively laminated to form the ascending and descending and equipment carrying-in hole C.

On the upper part of the floor slab 5 corresponding to the communication cable branch box storage hole D, a fourth straight wall pipe 12, an upper straight wall pipe 13, a third adjustment ring 14, and a lid having the same inner diameter are mutually formed. By stacking the receiving frames 15, the communication cable branch box storage holes D are formed.

Accordingly, in the present embodiment, the inside diameter of each of the hole C for both lifting and lowering and carrying in the equipment and the hole D for storing the communication cable branch box has the same inside diameter in the upper and lower portions.

Horizontal pipes 16 and 17 are connected to both side walls of the first straight wall pipe 4, respectively.
The inflow pipe and the outflow pipe of the sewage can be used as horizontal pipes 16 and 17, respectively.

In the above embodiment, the upper straight wall pipes 8, 13
Are formed so as to have a thickness larger than the thickness of the second straight wall pipe 6 and the third straight wall pipe 7 or the thickness of the fourth straight wall pipe 12, respectively. Thus, when the wall thickness of the upper straight wall pipes 8 and 13 is increased, the strength of the neck of the multifunctional manhole 1 can be increased, and the second straight wall pipes 6 and The thickness of the third straight wall pipe 7 and the fourth straight wall pipe 12 may be thin. Further, the iron covers of the hall C for both lifting and lowering and carrying in the equipment and the storage box D for the communication cable can be stably supported.

Further, a hole C for both raising and lowering and carrying equipment and a storage box D for storing a communication cable branch are provided in parallel above the manhole body E formed by the first straight wall pipe 4 so as to raise and lower the equipment. A relatively small diameter and lightweight iron cover can be used for each of the loading / unloading hole C and the communication cable branch box storage hole D.

This embodiment is advantageous when the multifunctional manhole 1 is composed of four or more manholes in the industry. This multifunctional manhole 1 is, for example, 2,000
At the upper end of the first straight wall pipe 4 having an inner diameter of 0 mm or more, a floor slab 5 for closing this opening is provided.
m, the inside diameter of the communication cable branch box storage hole D is configured to have a dimension of, for example, 600 mm, and the ascending / descending and equipment carrying-in hole C and the communication cable branch box storage hole D are provided side by side. The diameter of the iron lid can be configured to be relatively small, so that the iron lid can be easily opened and closed.

Further, the floor slab 5 on the side of the communication cable branch box storage hole D has a hole 5a drilled to pass the communication main line cable 18 which is routed inside the horizontal conduits 16 and 17. The partition wall 5b is configured to isolate the manhole body E formed by the first straight wall pipe 4 from the communication cable branch box storage hole D.

With this configuration, it is possible to prevent moisture, odor, gas and the like of the manhole body E from entering the communication cable branch box storage hole D, and to prevent the manhole body E from entering the upper straight wall pipe 13 of the communication cable branch box storage hole D. The communication cable branch box (junction box) 20 fixed to the peripheral surface and the worker who performs the branch connection work of the communication main line cable 18 and the branch branch cable 21 with the communication cable branch box 20 may be exposed to the moisture and odor of the manhole body E. Therefore, the communication cable branch box 20 is not exposed to gas and the like, so that the maintenance of the communication cable branch box 20 is ensured and the working environment is good.

Further, a plurality of steps 19 are mounted on the inner peripheral wall of the multifunctional manhole 1 for ascending and descending and carrying equipment, the communication cable branch box storage hole D, and the manhole body E.

As described above, the communication cable branch box 20 is attached and fixed to the inner peripheral surface of the upper straight wall tube 13 of the communication cable branch box storage hole D via a bolt (not shown) or the like. The communication main line cables 18 drawn from the manhole body E into the communication cable branch box storage hole D from the paths 16 and 17 can be connected to each other, or the communication main line cables 18 can be branched to the branch branch cable 21. It is configured.

The branch branch cable 21 passes through a hole 12a provided on the wall surface of the fourth straight wall pipe 12 of the communication cable branch box storage hole D and is guided to the outside of the communication cable branch box storage hole D. ing. The sheath tube 22 shown in FIG. 2 has a role of covering and protecting the branch branch cable 21 when the branch branch cable 21 is drawn into each house.

The two communication main cables 18 and the branch branch cables 21 connected to the communication cable branch box 20.
Form loops each having a predetermined diameter below the communication cable branch box 20. Accordingly, the communication main line cable 18 and the branch branch cable 21 can be aligned and inserted into the communication cable branch box 20 from below under the operation of the loop, and the communication cable branch box 20 together with the iron cover. It is configured so that it can be drawn out of the communication cable branch box storage hole D.

With the above configuration, the inner diameter of the upper straight wall pipe 13 forming the upper part of the communication cable branch box storage hole D is changed to the inner diameter of the fourth straight wall pipe 12 forming the lower part of the communication cable branch box storage hole D. Therefore, the space above the communication cable branch box storage hole D can be made large.

Therefore, for example, in a configuration in which the communication cable branch box 20 is mounted and fixed on the inner peripheral surface of the upper straight wall pipe 13 of the communication cable branch box storage hole D, the communication cable branch box 20 is left as it is. In this case, the communication main line cable 18 can be connected thereto, or the branch branch cable 21 can be branched, and can be effectively used as a work space when performing other repairs and inspections.

The communication cable branch box 20 fixed to the inner peripheral surface of the upper straight wall pipe 13 of the communication cable branch box storage hole D is provided with the communication main line cable 18 and the branch branch cable 21 as described above. Using the loop of
Since the communication cable branch box D can be easily pulled out from the opening of the communication cable branch box storage hole D, the communication main line cable 18 and the branch branch cable 21 can be connected outside the communication cable branch box storage hole D. Alternatively, branching or other repairs and inspections can be performed.

Further, according to the above configuration, the ascending and descending and equipment carrying hole C and the communication cable branch box storage hole D can be separately and independently assembled on the upper part of the lower skeleton manhole, and separately maintained. I can do it.

Next, another configuration of the first embodiment will be described with reference to FIG. In the above embodiment, the case where the upper and lower inner diameters of the communication cable branch box storage hole D are configured to have the same inner diameter has been described.
At the upper end of the first straight wall pipe 4 having an inner diameter of not less than 00 mm, a floor slab 23 for closing the opening is provided, and the first and second slabs having an inner diameter of 900 mm which are substantially identical to each other on the floor slab 23 are provided. (2) A hole C for raising and lowering and carrying equipment which is formed by stacking and fixing the straight wall pipes 24 and 25 and the lid receiving frame 26, and an inner diameter formed on the floor slab 23 so that the inner diameter gradually decreases toward the opening. The inner diameter is 900mm on the upper part of the inclined wall pipe 27 whose large diameter part is 1,200mm.
And a communication cable branch box storage hole D formed by laminating and fixing the third straight wall tube 28 and the lid receiving frame 29.

As in the first embodiment, the floor slab 23 is provided with a hole 23a for passing the communication main line cable 18, and a manhole formed by the first straight wall tube 4 by the partition wall 23b. The main body E is isolated from the communication cable branch box storage hole D. The branch branch cable 21 is provided on the wall surface of the inclined wall tube 27 with a branch box storage hole D for communication cables.
Is provided with a hole 27a for guiding the outside. Other configurations are the same as those of the first embodiment, and the same effects can be obtained.

Next, the second embodiment of the multifunctional manhole according to the present invention will be described.
Embodiments will be described with reference to FIGS. 4 and 5A to 5C. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 4 and 5 (a)
At the top of the first straight wall pipe 4 that constitutes the manhole body E, a hole C for both lifting and lowering and carrying equipment and a communication cable branch box storage hole D are provided adjacent to each other via a partition wall F. Floor slab 31 is arranged.

Above the floor slab 31, there is arranged a second straight wall pipe 32 integrally forming a hole C for both lifting and lowering and equipment and a branch box storage hole D for communication cables via a partition wall F. An eyeglass-shaped inclined wall tube 33 is formed on the upper portion of the second straight wall tube 32 and also integrally forms a hole C for both lifting and lowering and equipment and a branch box storage hole D for communication cables via a partition wall F. I have.

As shown in FIG. 5 (b), the side of the glasses C-shaped inclined wall tube 33 for ascending and descending and for carrying in the equipment is formed of a straight wall tube having an inner diameter equal to the inner diameter of the second straight wall tube 32. As shown in FIG. 5C, the cable branch box storage hole D is formed so that the inner diameter gradually decreases toward the opening. In addition, lid receiving frames 34 and 35 are disposed above the glasses-shaped inclined wall tube 33, respectively.

Branch box storage hole D for communication cable
The floor slab 31 on the side is firstly formed by a partition wall 31b having a hole 31a perforated for passing the communication main line cable 18 routed through the inside of the horizontal conduits 16 and 17 as in the first embodiment. The manhole body E formed by the straight wall tube 4 and the communication cable branch box storage hole D are configured to be isolated from each other.

The communication cable branch box 20 is attached and fixed to the inner peripheral surface of the communication cable branch box storage hole D side of the second straight wall pipe 32 via bolts (not shown) or the like. In addition, the branch branch cable 21 is guided to the outside of the communication cable branch box storage hole D through a hole 32a provided in the wall surface of the second straight wall pipe 32 of the communication cable branch box storage hole D. .

In the present embodiment, the ascending and descending and equipment carrying hole C and the communication cable branch box storage hole D are separated and arranged adjacent to each other via the partition wall F, so that the ascending and descending and equipment carrying in hole is provided. A relatively large work space can be provided for C and the communication cable branch box storage hole D.

Further, the ascending / descending and equipment carrying hole C and the communication cable branch box housing hole D which are adjacent to each other via the partition wall F are integrally formed of concrete or the like, and are each formed of a single member. By using the wall pipe 32 and the glasses-shaped swash wall pipe 33, the hall C is used for both lifting and lowering and carrying equipment.
Also, the communication cable branch box storage hole D can be assembled integrally, and the assembling workability is good.

In the case where the inside diameter of the communication cable branch box storage hole D of the glasses-shaped inclined wall tube 33 is gradually reduced toward the opening, the inside of the communication cable branch box storage hole D is reduced. At the same time as securing a working space, the diameter of the iron cover used for the communication cable branch box storage hole D can be configured to be relatively small, and the iron cover can be easily opened and closed by reducing the weight of the iron cover.

Other configurations are the same as those of the first embodiment, and the same effects can be obtained.

Next, the third of the multifunctional manhole according to the present invention will be described.
Embodiments will be described with reference to FIGS. 6 and 7A to 7C. The same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the second embodiment, the hole C for both raising and lowering and carrying in the equipment and the hole D for storing the branch box for communication cables are provided.
The partition wall F is fixed, but in this embodiment,
As shown in FIG. 5, the partition wall F of the second straight wall pipe 32 is constituted by a shielding wall G that can be attached to and detached from the multifunctional manhole 1. Therefore, the shielding wall G is formed separately from the second straight wall tube 32, and can be detached as needed.

With this configuration, when the shielding wall G is attached to the multifunctional manhole 1, it is possible to prevent moisture, odor, gas, etc. of the manhole body E from entering the communication cable branch box storage hole D, The worker performing the branch connection work of the communication main line cable 18 and the branch branch cable 21 in the communication cable branch box 20 or the communication cable branch box 20 is not exposed to the humidity, odor, gas, etc. of the manhole body E, Branch box 20 for communication cable
And the work environment is good.

Further, by removing and removing the shielding wall G from the multifunctional manhole 1, the hall C for both lifting and lowering and equipment and the branch box housing hole D for communication cables are communicated with each other to save space for work and the like. It can be significantly larger.

As shown in FIG. 6 and FIGS. 7A to 7C, the other structure is the same as that of the first and second embodiments.
Similar effects can be obtained.

[0058]

Since the multifunctional manhole according to the present invention has the above-described structure and operation, it has the following great effects.

(1) By independently providing a communication cable branch box storage hole capable of storing only the communication cable branch box above the lower body manhole, the communication cable branch box storage hole can be provided with the moisture of the manhole main body. The odor, gas, etc. can be prevented from invading, and the worker who performs the branch connection work of the communication main line cable or the branch branch cable with the communication cable branch box or the communication cable branch box can be used for the humidity, odor, gas, etc. of the manhole body. To maintain the integrity of the branch box for communication cables, as well as to connect, branch, and repair communication cables.
Good working environment for inspection work.

(2) The upper / lower / equipment loading / unloading hole and the communication cable branch box storage hole are provided in parallel above the lower skeleton manhole, so that the elevating / lowering and equipment loading / unloading hole and the communication cable branch box storage are provided. Each of the iron covers in the hall can be of a small diameter and light in weight, so that the iron covers can be easily opened and closed.

(3) By locking the communication cable branch box storage hole, it is possible to prevent an outsider or a worker having a different purpose, such as a sewer administrator, from entering the communication cable branch box storage hole. Prevention and safety can be ensured.

(4) When the ascending / descending / equipment carrying-in hole and the communication cable branch box storage hole which are adjacent to each other via the partition wall are integrally formed, the ascending / descending / equipment carrying-in hole and the communication cable use hole are formed. The branch box storage hole can be assembled integrally, and the workability of assembling a multifunctional manhole is good.

(5) When the partition wall is formed of a shielding wall that is detachable from the multifunctional manhole, the shielding wall is detached from the multifunctional manhole and removed as necessary, thereby ascending and descending. The space for work and the like can be remarkably increased by mutually communicating the equipment carrying-in hall and the communication cable branch box housing hall.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view showing a first embodiment of a multifunctional manhole according to the present invention.

FIG. 2 is an explanatory plan view showing a first embodiment of the multifunctional manhole according to the present invention.

FIG. 3 is an explanatory longitudinal sectional view showing another configuration of the first embodiment.

FIG. 4 is an explanatory longitudinal sectional view showing a multifunctional manhole according to a second embodiment of the present invention.

5A is an explanatory plan view showing a multifunctional manhole according to a second embodiment of the present invention, FIG. 5B is a vertical sectional view taken along the line AA of FIG. 5A, and FIG. It is a BB arrow vertical cross-sectional view.

FIG. 6 is an explanatory longitudinal sectional view showing a third embodiment of the multifunctional manhole according to the present invention.

7A is an explanatory plan view showing a third embodiment of the multifunctional manhole according to the present invention, FIG. 7B is a vertical sectional view taken along the line AA of FIG. 7A, and FIG. It is a BB arrow vertical cross-sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Multifunctional manhole 2 ... Kuriishi 3 ... Bottom plate 4 ... 1st straight wall pipe 5 ... Floor slab 5a ... Hole 5b ... Partition wall 6 ... 2nd straight wall pipe 7 ... 3rd straight wall pipe 8 ... Top straight wall pipe 9 ... 1st adjustment ring 10 ... 2nd adjustment ring 11 ... lid receiving frame 12 ... 4th straight wall pipe 12a ... hole 13 ... upper straight wall pipe 14 ... 3rd adjustment ring 15 ... lid receiving frame 16, 17 ... horizontal conduit 18 ... communication Main cable 19 ... Step 20 ... Branch box for communication cable 21 ... Branch cable 22 ... Sheath tube 23 ... Floor plate 23a ... Hole 23b ... Partition wall 24 ... First straight wall tube 25 ... Second straight wall tube 26 ... Cover receiving frame 27 ... Slope wall pipe 27a ... Hole 28 ... Third straight wall pipe 29 ... Lid receiving frame 31 ... Floor slab 31a ... Hole 31b ... Partition wall 32 ... Second straight wall pipe 32a ... Hole 33 ... Glass type swash wall pipe 34,35 ... Lid Receiving frame C: hall for both lifting and lowering and carrying in equipment D: hole for storing communication cable branch box E: manhole body F: partition wall G: shielding wall

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Nobunaga 1-22-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Haneda Hume Kanko Co., Ltd. (72) Inventor Kuniyuki Ichikawa 1-22 Nishi-Shinjuku, Shinjuku-ku, Tokyo No. 2 Haneda Hume Tube Co., Ltd.

Claims (5)

[Claims] 1. A multi-function manhole comprising a lower body manhole having a large inner diameter, and a hole for raising and lowering and carrying equipment and a hole for accommodating a branch box for communication cables are provided in parallel with each other. 2. The multifunctional manhole according to claim 1, wherein the hole for both raising and lowering and carrying equipment and the communication cable branch box storage hole are provided separately from each other. 3. The multi-function device according to claim 1, wherein the hole for both raising and lowering and carrying the equipment and the communication cable branch box storage hole are provided adjacent to each other via a partition wall. manhole. 4. The partition according to claim 3, wherein a partition wall provided between the lift / lower / equipment carrying-in hole and the communication cable branch box storage hole is formed by a detachable blocking wall. The described multifunctional manhole. 5. A communication cable branch box is mounted in the communication cable branch box storage hole, and a communication main line cable or branch branch cable laid in the lower skeleton manhole and a horizontal conduit connected thereto is provided. The multifunctional manhole according to any one of claims 1 to 4, wherein the multifunctional manhole is connected to a communication cable branch box.