JP2017127067A - Wire common trench, and housing box for use therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire common trench capable of forming a space for housing a connection device of wire as wide as possible, by forming a housing box constituting a special part as low as possible.SOLUTION: A wire common trench includes a cable trough 11 constituting a general part, and a housing box 12 constituting a special part, and housing a connection device 45 of wire. The cable trough 11 and the housing box 12 commonly include a trough body 13 having bottom walls 23, 33, a pair of sidewalls 24, 34 extending upward from the opposite ends of the bottom walls 23, 33 in the width direction, and internal spaces S1, S2 opening at the upper end. The cable trough 11 includes a first lid member 22 freely closing an open part at the upper end of the trough body 13 openably. The housing box 12 includes a second lid member 32 freely closing the open part at the upper end of the trough body 13 openably. The second lid member 32 has a hollow section S3 communicating with the internal space S2 of the trough body 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric wire joint groove and a storage box used therefor.

In recent years, especially in urban areas, as a kind of underground cable route for the purpose of improving the landscape and ensuring smooth road traffic, multiple types of electric wires such as power lines and communication lines are buried in the ground to make non-electric poles For this purpose, the construction of a common wire groove is underway.
An electric wire common groove (also referred to as “CC Box”) is a facility that a road administrator installs in the basement of a road to accommodate the wires of two or more persons who install and manage electric wires. Say. Moreover, the electric wire joint groove has a general part and a special part. Of these, the general section refers to a pipeline section that accommodates electric wires of electric power, communications, broadcasting companies, and the like. The special part is a general term for a part that performs branching of an electric wire for supply to a customer, connection of the electric wire, and the like, and includes, for example, a box interposed between general parts (for example, Patent Document 1). reference).

In addition, as one of the construction methods of the electric wire common groove, there is a “trough method” in which a relatively small trough is embedded in the ground of a sidewalk as a general part, and the sheath of the electric wire is accommodated inside the trough.
For example, Patent Document 2 discloses a cable trough embedded in a relatively shallow layer in the ground. The cable trough is made of concrete, and includes a trough member having a bottom wall and a side wall and having an internal space in which both ends and an upper end in the longitudinal direction are open, and a lid member that closes an open portion of the upper end of the trough member. ing.

JP 2005-117877 A JP 2005-304198 A

The cable trough that constitutes the general part of the common wire groove usually contains only the wire passed through the sheath, so it does not need to be so deep, but the special part can be connected to a cable or branched. In order to accommodate the connecting device for the purpose and to perform the wire connection work or the like inside the special part, the depth is required more than the cable trough.
However, existing buried objects such as water pipes and gas pipes may exist in the ground, and the buried objects may become an obstacle and cannot be buried deeply. Moreover, it may be difficult to dig deep into the ground on a sidewalk with a narrow road. For this reason, it is desired that the special portion be buried as shallow as possible.

  The present invention relates to an electric wire common groove capable of forming a housing space for accommodating a connected device as wide as possible even when the housing box constituting the special portion is formed as low as possible, and a housing used therefor The purpose is to provide a box.

(1) The electric wire joint groove of the present invention is
A cable trough constituting the general part,
Comprising a special box, and a storage box for storing the connection equipment of the wire,
The cable trough and the storage box are
A common trough body having a bottom wall and a pair of side walls extending upward from both ends in the width direction of the bottom wall and having an internal space opened at the upper end;
The cable trough
A first lid member for freely opening and closing the open portion of the upper end of the trough body;
The storage box is
A second lid member for freely opening and closing the open portion of the upper end of the trough body;
The second lid member has a hollow portion communicating with the internal space of the trough body.

  According to the above configuration, the cable trough and the storage box have a common trough body, and the second lid member of the storage box has the hollow portion communicating with the internal space of the trough body. It can be embedded in a shallow layer in the ground at the same depth as the trough, and the accommodation space in which the electric wire connection device is accommodated can be formed as wide as possible in the accommodation box. In addition, since a common trough body is used for the storage box and the cable trough, the types of parts can be reduced and the manufacturing cost can be reduced.

(2) It is preferable that the said hollow part has the width dimension which is the same as that of the internal space of the said trough main body, or is larger than this.
With such a configuration, the accommodation space in the accommodation box can be formed wider.

(3) It is preferable that the second lid member constitutes a part of the road surface.
With such a configuration, the internal space of the trough body can be exposed upward by opening the second lid member. Therefore, the open part of the upper end of the trough body can be used as an inspection port.

(4) It is preferable that a knockout portion for forming an opening for drawing out an electric wire is provided on the side wall of the trough body so as to reach the upper end edge of the side wall.
With such a configuration, the opening formed using the knockout portion is opened at the upper end edge of the side wall, so that the electric wire can be inserted into the opening from above the side wall. Thereby, the operation | work which lets a side wall pass and pulls out an electric wire can be performed easily.

(5) The trough body is configured by connecting a plurality of trough members having the bottom wall and the pair of side walls in the extending direction of the electric wire joint groove,
It is preferable to further include a connecting member that connects the trough members adjacent to each other below the center in the height direction.
With such a configuration, when the lower side of the common wire groove is excavated, it is possible to prevent the seams of the adjacent trough members from dropping so as to open from the lower side.

(6) The trough body is configured by connecting a plurality of trough members having the bottom wall and the pair of side walls in an extending direction of the electric wire joint groove,
The second lid member may be disposed across a plurality of trough members.
With such a configuration, the portion including the second lid member can be configured as a storage box without being affected by the arrangement and length of the plurality of trough members.

(7) The present invention constitutes a special portion of the electric wire joint groove, and is a storage box in which the connection device for the electric wire is stored,
A trough member having a bottom wall and a pair of side walls extending upward from both ends in the width direction of the bottom wall and having an internal space opened at the upper end;
A lid member that freely opens and closes the open portion of the upper end of the trough member,
The lid member has a hollow portion communicating with the internal space of the trough member.

  According to this configuration, since the second lid member of the storage box has a hollow portion that communicates with the internal space of the trough member, even if the storage box is formed as low as possible, the connecting device for the electric wire The accommodation space to be accommodated can be formed widely. Therefore, it becomes possible to embed the storage box in a shallow layer in the ground.

  According to the present invention, even if the storage box constituting the special portion is formed as low as possible, the storage space in which the connection device is stored can be formed as wide as possible.

It is a perspective view of the electric wire joint groove | channel which concerns on 1st Embodiment. It is a side view of an electric wire joint groove. It is a top view of an electric wire joint groove. It is a cross-sectional view of a cable trough. It is a cross-sectional view of a storage box. It is a side view of the electric wire joint groove | channel which concerns on 2nd Embodiment. It is a top view of an electric wire joint groove. It is a cross-sectional view of a cable trough. It is a cross-sectional view of a storage box.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a perspective view for a common wire groove according to the first embodiment. FIG. 2 is a side view of the common wire groove, and FIG. 3 is a plan view of the common wire groove.
The common wire groove 10 of the present embodiment is a trough system, and includes a cable trough 11 that constitutes a general part and a storage box 12 that constitutes a special part. Specifically, the cable trough 11 is a small trough embedded in a relatively shallow layer below the paved road R along the paved road R such as a sidewalk by a shallow layer embedding method. The storage box 12 is embedded at the same depth as the cable trough 11.

  The cable trough 11 and the storage box 12 are provided with a common trough body 13. Further, the cable trough 11 and the storage box 12 are provided with different lid members 22 and 32. The trough body 13 is configured by connecting a plurality of trough members 21 and 31 in the extending direction of the electric wire joint groove 10. In addition, as shown in FIG. 3, the paved road R of this embodiment is paved with a block or flat paving material Ra formed of concrete, stone or the like on the road surface.

  FIG. 4 is a cross-sectional view of the cable trough. As shown in FIGS. 1-4, the cable trough 11 consists of the block made from the precast concrete formed in the substantially rectangular parallelepiped shape, and the space S1 penetrated in a longitudinal direction is formed in the inside. The cable trough 11 includes a trough member 21 constituting the trough body 13 and a lid member (first lid member) 22.

The trough member 21 has a bottom wall 23 and a pair of side walls 24 extending upward from both ends of the bottom wall 23 in the width direction, and has a substantially U-shaped cross section. Accordingly, the trough member 21 is formed with an internal space S1 that is open at both ends and the upper end in the longitudinal direction.
The lid member 22 is made of a rectangular concrete plate material that closes an open portion at the upper end of the trough member 21 so as to be freely opened and closed. By closing the upper end open part of the trough member 21 with the lid member 22, the cable trough 11 becomes a cylindrical shape, and an electric wire K such as a power line or a communication line is inserted into the sheath pipe P in the cylindrical internal space S1. Housed in state. However, the electric wire K may be directly accommodated in the internal space S1 of the cable trough 11 without being inserted into the sheath tube P.

  The cable trough 11 is embedded below the paving material Ra on the paved road R. That is, the cable trough 11 is covered with the paving material Ra and is not exposed to the outside.

FIG. 5 is a cross-sectional view of the storage box. As shown in FIGS. 1 to 5, the storage box 12 includes a trough member 31 constituting a trough body 13 and a lid member (second lid member) 32.
The trough member 31 is the same part (product) as the trough member 21 of the cable trough 11 and is made of a precast concrete block. More specifically, the trough member 31 includes a bottom wall 33 and a pair of side walls 34 extending upward from both ends in the width direction of the bottom wall 33. Therefore, the trough member 31 is formed with an internal space S2 surrounded by the bottom wall 33 and the side wall 34 and opened at both ends and the upper end in the longitudinal direction. The trough member 31 is embedded in the ground at the same depth as the trough member 21 of the cable trough 11. The trough member 31 of the storage box 12 and the trough member 21 of the cable trough 11 are connected so that the internal spaces S1 and S2 communicate with each other.

  The lid member 32 closes the open portion at the upper end of the trough member 31. The lid member 32 has a hollow portion S3 communicating with the internal space S2 of the trough member 31. Specifically, the lid member 32 is formed of a metal plate material, a lid plate portion 32a made of a rectangular plate material, a pair of leg portions 32b extending downward from both sides in the width direction of the lid plate portion 32a, It has the mounting part 32c bent in the width direction inner side from the lower end part of the leg part 32b. And the space enclosed by the cover plate part 32a, the leg part 32b, and the mounting part 32c comprises the hollow part S3. The lid member 22 of the cable trough 11 described above does not have such a hollow portion S3 and has a solid structure.

  The lid member 32 and the trough member 31 have the same length. The lid member 32 and the trough member 31 have the same width dimension W1. The metal plate constituting the lid member 32 is formed thinner than the concrete material constituting the trough member 31. Therefore, the hollow portion S3 has a width dimension W3 larger than the maximum width dimension W2 of the internal space S2 of the trough member 31.

  A mounting frame 32 d is provided on the upper surface of the lid plate portion 32 a of the lid member 32. The mounting frame 32d is provided along the outer edge portion of the cover plate portion 32a, and connects the outer peripheral frame member 32d1 extending upward from the outer edge portion and the longitudinal center portion of the outer peripheral frame member 32d1 on both sides in the width direction. Material 32d2. Then, a pavement material Rb of the same material as the pavement material Ra of the pavement road R is accommodated and mounted in a rectangular space partitioned by the outer peripheral frame material 32d1 and the intermediate frame material 32d2.

  The paving material Rb mounted on the mounting frame 32d of the lid member 32 is arranged substantially flush with the paving material Ra of the paved road R, and the lid member 32 integrated with the paving material Rb is formed on the paved road R. It constitutes a part of the road surface. When the lid member 32 is opened, the upper end open portion of the trough member 31 of the storage box 12 is exposed upward. Therefore, the upper end open part of the trough member 31 becomes an inspection port, and the inside of the trough member 31 can be accessed through this inspection port.

  The accommodation box 12 accommodates a connection device 45 for branching and connecting the electric wires in addition to the electric wires K such as power lines and communication lines. Therefore, compared to the cable trough 11 that accommodates only the electric wire K (including the sheath tube P), the accommodation box 12 has more accommodation and the bulk of the accommodation becomes higher. In the present embodiment, the lid member 32 of the storage box 12 has a hollow portion S3, and the hollow portion S3 communicates with the internal space S2 of the trough member 31. Accommodation spaces S2, S3 are formed. Therefore, the connection device 45 etc. of the electric wire K can be accommodated suitably.

  The trough member 31 of the storage box 12 is the same part as the trough member 21 of the cable trough 11 and has the same cross-sectional shape, and the storage box 12 is embedded in the ground at the same depth as the cable trough 11. ing. Even when the storage box 12 is buried in the ground as in the case of the cable trough 11 as described above, since the wide storage spaces S2 and S3 are formed in the storage box 12, not only the electric wire K but also the connection device 45 is provided. Can also be suitably accommodated.

  Further, since the lid member 32 has a width dimension W3 wider than the internal space S2 of the trough member 31, the storage spaces S2, S3 of the storage box 12 can be formed wider.

A mounting frame 32d is provided on the top of the lid member 32. Since the pavement material Rb made of the same material as the surrounding pavement Ra is mounted on the mounting frame 32d, the lid member 32 is attached to the road surface of the paved road R. Even if it is exposed to the surface, the appearance can be prevented from being damaged.
Further, the mounting frame 32d provided on the upper portion of the lid member 32 also functions as a reinforcement of the lid plate portion 32a. Therefore, the strength of the cover plate portion 32a formed in a flat plate shape can be suitably increased by the mounting frame 32d. Therefore, it becomes possible to reduce or eliminate the reinforcement on the lower surface side of the lid plate portion 32a, and the hollow portion S3 can be secured widely.

  In the adjacent cable troughs 11, the trough members 21 are connected to each other by a connecting member 41. In addition, the trough members 31 are also connected to each other by the connecting member 41 in the adjacent storage boxes 12. Further, the trough members 21 are connected to each other by the connecting member 41 between the adjacent cable trough 11 and the storage box 12.

  The connecting member 41 includes a pin 42 attached to the side walls 24 and 34 of the trough members 21 and 31 and a connecting plate 43 that connects the pins 42 to each other. The connecting member 41 is disposed below the center of the trough members 21 and 31 in the height direction. This is due to the following reason.

  When the cable trough 11 and the storage box 12 are embedded in a shallow layer in the ground, an embedded object may be further embedded below them. At this time, as shown in FIG. 2, when excavating the lower part of the joint of the cable trough 11 and the storage box 12 (the excavation portion is indicated by a symbol A), the connection portion of the cable trough 11 and the storage box 12 opens from below, The cable trough 11 and the storage box 12 may fall into the excavation part A. In this embodiment, since the trough member 21 and the trough member 31 are connected by the connecting member 41 below the center in the height direction, the connecting state is not opened from the lower side of the connecting portion. It can maintain suitably.

  A knockout portion 24 a is formed on the side wall 24 of the trough member 21 of the cable trough 11. A knockout portion 34 a is also formed on the side wall 34 of the trough member 31 of the storage box 12. These knockout portions 24a and 34a are intended to facilitate the formation of openings through the side walls 24 and 34 by forming the side walls 24 and 34 partially thin. The openings formed in the side walls 24 and 34 are used when the cable trough 11 or the electric wire K in the housing box 12 is pulled out.

  The knockout portions 24a, 34a are formed in a range reaching the upper end edges of the side walls 24, 34. Therefore, the opening formed for drawing out the electric wire K can also be made open at the upper end edges of the side walls 24 and 34. As described above, when the opening is opened at the upper edge of the side walls 24 and 34, the electric wire can be inserted into the opening from above the side walls 24 and 34, compared with a case where the electric wire is passed through the opening whose periphery is closed. Thus, the electric wire can be easily pulled out to the outside.

  In addition, in the said embodiment, although the trough member 21 which comprises the cable trough 11 and the trough member 31 which comprises the storage box 12 were clearly distinguished per block, it is not necessarily distinguished per block. Also good. For example, the trough main body 13 is formed by connecting a plurality of trough members 21 and 31 in the longitudinal direction (extension direction of the electric wire joint groove 10), and an arbitrary portion of the trough main body 13 where the lid member 22 is disposed is formed. The cable trough 11 and an arbitrary portion where the lid member 32 is disposed can be configured as the storage box 12. Therefore, the lid members 22 and 32 do not have to correspond to the trough members 21 and 31 on a one-to-one basis, and may be arranged across the plurality of trough members 21 and 31. By configuring in this way, the cable trough 11 and the storage box 12 can be arranged by arranging the lid members 22 and 32 at desired positions of the trough body 13 without being affected by the positions of the trough members 21 and 31. Each can be provided.

[Second Embodiment]
FIG. 6 is a side view of the electric wire joint groove according to the second embodiment. 7 is a plan view of the common wire groove, FIG. 8 is a cross-sectional view of the cable trough, and FIG. 9 is a cross-sectional view of the housing box.
In the first embodiment described above, an example in which the cable trough 11 is embedded below the road surface of the paved road R has been shown. However, in the second embodiment, the cable trough 11 is exposed on the road surface in addition to the housing box 12. ing. In particular, as shown in FIG. 7, the cover members 22 and 32 of the cable trough 11 and the storage box 12 are exposed to the outside.

  As shown in FIG. 9, the lid member 32 of the storage box 12 is made of precast concrete like the trough member 31 and has a hollow portion S <b> 3 communicating with the internal space S <b> 2 of the trough member 31. Specifically, the lid member 32 has a lid plate portion 32a and leg portions 32b extending downward from both ends in the width direction of the lid plate portion 32a, and is a space surrounded by the lid plate portion 32a and the leg portions 32b. Constitutes the hollow portion S3.

  In the present embodiment, since the lid members 22 and 32 do not include the paving material for the paved road R, the first embodiment is preferable in terms of the appearance of the road. However, both the cable trough 11 and the storage box 12 can open the inside of the trough members 21 and 31 upward by opening the cover members 22 and 32, and the inspection of the electric wire K and the connecting device 45 is easy. Can be done.

The embodiment disclosed this time is illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, and includes all modifications that are within the scope of the claims and equivalents.
For example, the hollow portion S3 formed in the lid member 32 of the storage box 12 may have a width dimension W3 slightly smaller than the width dimension W2 of the internal space S2 of the trough member 31.
The trough members 21 and 31 constituting the trough body 13 may not be formed to have the same length, and the lid members 22 and 32 may not be formed to have the same length.
.

10: Electric wire joint groove 11: Cable trough 12: Storage box 13: Trough body 21: Trough member 22: Lid member 23: Bottom wall 24: Side wall 24a: Knockout part 31: Trough member 32: Lid member 32d: Mounting frame 33: Bottom wall 34: Side wall 34a: Knockout part 41: Connecting member 45: Connection device K: Electric wire R: Pavement road Ra: Pavement material Rb: Pavement material S1: Internal space S2: Internal space S3: Hollow part

Claims (7)

A cable trough constituting the general part,
Comprising a special box, and a storage box for storing the connection equipment of the wire,
The cable trough and the storage box are
A common trough body having a bottom wall and a pair of side walls extending upward from both ends in the width direction of the bottom wall and having an internal space opened at the upper end;
The cable trough includes a first lid member that opens and closes an open portion at an upper end of the trough body,
The storage box is
A second lid member for freely opening and closing the open portion of the upper end of the trough body;
The electric wire common groove, wherein the second lid member has a hollow portion communicating with the internal space of the trough body.   The electric wire joint groove according to claim 1, wherein the hollow portion has a width dimension that is equal to or greater than a width dimension of an internal space of the trough body.   The electric wire joint groove according to claim 1 or 2, wherein the second lid member constitutes a part of a road surface.   The knockout part for forming the opening for electric wire extraction is provided in the side wall of the said trough main body so that it may reach to the upper end edge of the said side wall. Electric wire joint groove. The trough body is configured by connecting a plurality of trough members having the bottom wall and the pair of side walls in the extending direction of the electric wire joint groove,
The electric wire common groove according to any one of claims 1 to 4, further comprising a connecting member that connects the trough members adjacent to each other below a central portion in the height direction. The trough body is configured by connecting a plurality of trough members having the bottom wall and the pair of side walls in the extending direction of the electric wire joint groove,
The electric wire joint groove according to any one of claims 1 to 5, wherein the second lid member is disposed across the plurality of trough members. It is a storage box that constitutes a special part of the electric wire joint groove and accommodates the connecting device of the electric wire,
A trough member having a bottom wall and a pair of side walls extending upward from both ends in the width direction of the bottom wall and having an internal space opened at the upper end;
A lid member that freely opens and closes the open portion of the upper end of the trough member,
The storage box, wherein the lid member has a hollow portion that communicates with an internal space of the trough member.

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