JP3364671B2 - Collective conduit protection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective device for a collective conduit for protecting a conduit buried in the ground from a mechanical shock that may be applied from the outside.

[0002]

2. Description of the Related Art Electric wires that were conventionally erected in the air
Recently, from the viewpoint of the aesthetics of the city, the policy of burying it underground is changing. An example of a conduit used according to this policy will be described with reference to FIG. 18. A plurality of bellows-shaped conduits 10 having circular cross sections (6 in the same figure) for accommodating electric wires In order to prevent the shape from being collapsed inside and to protect the conduit wall and to protect the conduit wall, a box-shaped spacer-combining coupling member 11 made of high-density polyethylene composed of a spacer part h and an outer covering part i is used, It is housed inside the spacer / combining member 11 and continuously arranged in the electric wire common groove connecting the manholes. The spacer / joining members 11 arranged continuously are connected to each other using joints and pins.

The spacer-combined connecting member 11 is composed of a straight unit used for a straight line portion and a flexible unit used for a curved line portion. In the straight line portion, the straight unit is simply used by connecting it with a joint and a pin. In the curved part, flexible units formed in a relatively short dimension are connected with a gap, and at the connecting part, the gap is used to give a certain angle to each other, so that the curved parts such as the corners of the road as a whole are curved. It has a structure that can be arranged.

[0004]

Originally, in order to bury and lay an electric wire, in the conventional construction method, since the cross section of the electric wire tube is circular, it is necessary to hold the shape integrated as a collective electric wire tube only by stacking. Since it is impossible to do so and it hinders the construction, the plurality of conduits 10 are put together, and at the same time, the outer wall of the conduit is prevented from being destroyed by the impact of an excavating tool such as a pickaxe or a falling object in the construction. In order to do so, the spacer-combined connecting member 11 must be used as described above, but this spacer-combined connecting member 11 is relatively expensive, and there is a problem that the construction cost is high because of the large amount of use. Further, since there is a gap in the flexible unit portion of the spacer / joint member 11, there is a drawback that it is easily damaged by an external impact, particularly from above, which is a problem to be solved.

Therefore, the present inventor pays attention to such a situation, and by continuously arranging a protective member which covers the upper surface of the aggregate of only the conduit main body laid in the ground, a drilling tool, a falling object, etc. While preventing the destruction of the jacket of the assembly conduit by
It is an object of the present invention to provide a protective device for a collective conduit that can suppress an increase in construction cost.

[0006]

In the protective device for a collective conduit of the present invention, which is taken as a means for achieving the above object, the outer surface shape of the pipe wall is a square wall portion d and a circular cross section in the pipe axial direction. Resin corrugated conduit tube 3 in which wall portions e are alternately arranged
A protective device for a collective conduit 3 in which a plurality of 1 are integrated, and a straight part protection member 1 having a gutter-shaped cross-sectional shape having bent end portions on both sides, and a gutter-shaped cross-sectional shape. ,
When the protection device is continuously installed, the end portions are layered on top of each other, and the protection member 2 for a curved portion has an end shape so that no gap is formed on the upper surface of the connection portion. The upper surface, or the upper surface and the lower surface, of the collective conduit 3 to be embedded is continuously covered with the straight line protection member 1 in a straight line portion, and the curved line protection member 2 is continuously provided in a curved line portion. The structure is such that it is arranged and covered along the curved line of the buried portion so that no gap is formed between the straight line protective member 1 or the curved portion protective member 2.

Similarly, in the protective device for the collective conduit 3, holes f are formed in a plurality of rows at positions corresponding to the gaps between both side surfaces of the collective conduit 3 and the parallel resin corrugated conduit 31. The protective plate body 5 and a detent bar 6 for fixing the protective plate body 5 on the installation of the assembly conduit tube 3, and covering the protective plate body 5 on the upper surface of the assembly conduit tube 3. After covering, the detent rod-shaped body 6 is provided with a hole f.
Is arranged on the side surface or in the gap of the collective electric conduit 3 through which the protective conduit main body 5 covers the collective electric conduit 3.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out the present invention,
Both the straight line protection member 1 and the curved line protection member 2 are manufactured by extrusion molding using a synthetic resin such as polyvinyl chloride or polyethylene. The raw material resin used may be a new material, but a recycled synthetic resin material obtained from waste materials may be used. In this case, profit can be obtained by reducing the material cost and environmental purification can be achieved by recycling. Can also contribute. Both of the cross-sectional shapes are troughs having bent edge portions on both sides, and are U-shaped, imitating a part of a rectangular shape. It has been adopted as a shape suitable for covering the upper surface of the aggregated conduit tube 3 which is made up of the following, and other than this shape, it has a roof shape or a kamaboko shape having short bent edges on both sides or a similar shape. It may have a shape.

Of the above-mentioned protective members, the curved portion protective member 2
As an example of the structure, the other end b has a shape similar to the one end a and expanded to a size including the one end a with respect to the one end a, and the other end b is provided in the vicinity of the other end b or over the entire length. And has a tapered shape. The curved portion protection member 2 can be obtained by subjecting an extruded member to secondary processing, and it cannot be lengthened when the radius of the curved portion is short. Since they are different from each other, the optional members may be provided only at necessary portions corresponding to the curved portion. As an installation method, one end a of the curved-portion protection member 2 and the other end b of the curved-portion protection member 2 that is successively arranged next to each other are placed so as to have a predetermined angle with respect to each other. By doing so, they can be arranged along the curved line of the conduit embedded portion.

Further, as another structural example of the curved portion protection member 2, it has a gutter-shaped cross-sectional shape having bent edge portions on both sides, and at least one end portion of the upper surface projects as an eaves c. When installed in a curved portion, at the end of the curved-portion protective member 2 or the straight-line portion protective member 1 placed in front,
By covering the eaves c of the end portion of the subsequent curved portion protection member 2 and arranging them at a predetermined angle with respect to each other so that the gap of the joint cannot be seen from the upper surface, the curve of the conduit embedded portion is curved. Can be arranged along.

Further, in the flat plate type protection plate main body 5, a fixing hole f penetrating the detent bar 6 is formed in the rectangular plate member made of synthetic resin. When the protective plate body 5 is arranged so as to cover the collective conduit 3, the holes are provided in a plurality of rows at positions corresponding to both side surfaces of the collective conduit 3 and the gaps between the parallel corrugated conduits 31. Is drilled over. At the time of implementation, the conduit tube 3
After covering the upper surface of the protective plate body 5 with the protective plate body 5 and dropping the detent rod-shaped body 6 through the hole f to the outside or the gap of the collecting conduit tube 3 or the long rod-shaped body 6, its tip is soiled. It is driven in to form a stopping pile, and the expanded head g presses the periphery of the hole f so as to fix the protective plate body 5 and the assembly conduit tube 3 along the embedded portion, or It is possible to cover the upper surface of the assembly conduit tube 3 and implement it as a protection device.

This flat plate type protection device can be used for a straight portion and a curved portion only with the protective plate body 5, and the protective plate bodies 5 need only be arranged along the installed conduit tube 3. In this case, the abutting end portions of the front protective plate body 5 and the subordinate protective plate body 5 are slightly overlapped with each other, so that foreign matter does not enter from the joint portion and the protective function is more complete. Become.

The installation of each protective member is the final step of the burying work, and the protective member 1 for the straight line portion is provided on the upper surface or the upper surface and the lower surface of the collective conduit 3 in which the individual conduits 31 are stacked, depending on the installation location. The curved portion protection members 2 are arranged continuously. In the case of the flat plate type protection plate body 5, as described above,
The straight and curved parts are the same. The protective member 1 for straight portions, the protective member 2 for curved portions, or the protective plate main body 5 of the present invention is arranged so as to cover the upper surface of the joint member 11 serving also as a spacer as a conventional example, particularly at the joint portion. It is also possible to use it as an integrated type with the spacer-combined coupling member 11.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing an installed state of a first embodiment of a protective apparatus for collective conduit according to the present invention, in which an electric wire (not shown) is connected to a manhole 4 at a connecting point.
1 and a plurality of the conduits 31 (9 in this figure)
They are put together into a collective conduit 3, which is laid inside a groove j excavated along the roadside, or a separately constructed multipurpose shared underdrain (not shown). As shown in FIG. 17, the conduit tube 31 is made of a synthetic resin material or a rubber material, and a short cylindrical portion d having a rectangular cross section and a short cylindrical portion e having a circular cross section are alternately connected continuously like a bellows. It is a cylindrical body that has rigidity and moderate flexibility and adapts to various curves, and has resistance to local deformation and destruction due to external force. Simply stacking it requires a spacer, binder, etc. Instead, the appearance of the collective conduit 3 is maintained by the action of the rectangular cross section. Note that FIG. 17 also shows the joint portion 32 of the conduit.

In the first embodiment, the gutter-shaped straight line protection member 1 and curved line protection member 2 arranged on the upper surface of the assembly conduit tube 3 have the shapes shown in FIGS. 2 and 4, respectively. However, as described above, it is manufactured by extrusion molding of synthetic resin, but in this embodiment, industrial waste such as polyvinyl chloride or polyethylene is used as a raw material, it is manufactured inexpensively, and it is recycled for environmental purification. Also contributed.
FIG. 3 shows an implementation state in which the protection member 1 for a straight portion is used,
FIG. 5 shows enlarged states of the curved portions using the curved portion protection member 2, respectively.

FIG. 6 shows another embodiment of the first embodiment, in which the second straight line protection member 1'is laid upwards and laid on the bottom of the excavation groove, and the collective conduit 3 is installed thereon. Further, the upper surface thereof is covered with the protective member 1 for a straight line portion and buried in the same manner as in the first embodiment. At this time, the second straight line protection member 1'may have a deep gutter shape as shown in FIG. still,
Although not shown, the structure in this embodiment can be applied to a curved portion by using the second curved portion protection member 2.

The cross section of the embodiment shown in FIGS. 2 and 4 was formed by a part of a rectangle. FIG. 7 shows a cross section of a modification of the straight line protection member 1 and the curved line protection member 2. The shape is mountain-shaped (or roof-shaped) with the center raised. When this shape is buried in the ground, it has a large strength against the pressure of the surrounding soil and a vertical impact and is hard to be deformed.

FIG. 8 shows a cross section of another modification. Its shape is a kamaboko shape (or dome shape) with its center raised. When this shape is also buried in the ground, it has a large strength against the pressure of the surrounding soil and a vertical impact, is hard to be deformed, and has an excellent protective effect on the conduit.

FIGS. 9 and 10 show examples of use in carrying out the first embodiment. FIG. 9 shows the case where there are six electric conduits 31, and FIG. 10 shows the case where there are four electric conduits 31. . In the usage example shown in FIG. 10, the conduit 31 is used as the straight line protection member 1.
Although the width equivalent to the book is used, it goes without saying that the width equivalent to 3 pieces may be used without being limited to this. Further, in each of the usage examples shown in FIGS. 9 and 10, the structure of the straight line portion is shown as an example, but the same applies to the curved line portion.

The shape of the curved portion protection member 2A of the second embodiment is shown in FIG. 11, and its implementation state is shown in FIG. Further, FIG. 13 shows the shape of a modification 2B of the second embodiment. The eaves c projecting from one end of the curved portion protection member 2A of the second embodiment, or both ends in the modified example 2B, are semicircular in the drawing, but this eaves c has a curved portion protection member. It is provided to cover the gap formed at the joint from above when arranged at an angle, so the shape should be limited to a semicircle to achieve this purpose. Needless to say, other shapes such as a hollow shape and a square shape may be used. Further, the eaves c protruding at both ends may have different shapes.

The shape of the flat plate type protective plate body 5 of the third embodiment is shown in FIG. 14, and its implementation state is shown in FIGS. 15 and 16, respectively. The protective plate body 5 shown in FIG.
Are manufactured for the parallel collecting conduit 3 which has three parallel holes, and therefore the holes f are formed on both sides of the collecting conduit 3 and the corrugated conduit 31.
The holes are provided in four rows corresponding to the two gaps. When the number of corrugated conduits 31 constituting the collective conduit 3 is different, the width of the protective plate body 5 and the number of rows of the holes f may be determined according to each number, and the number of corrugated conduits 31 may be determined. Of course, it does not matter if the width is wider than the width corresponding to.
In this embodiment, the same protective plate main body 5 is used for both the straight line portion and the curved line portion, but when used in the curved line portion, when the curvature is large, the collective conduit tube 3 protrudes at the intermediate portion of the protective plate body 5. To prevent this, it may be cut into short pieces before use.

The implementation state shown in FIGS. 15 and 16 is a state in which the curve portion is shifted from the middle. The seams have the required angles and are placed slightly overlapping so that the holes f are aligned. The detent rod-like body 6 shown in FIG. 15 is a long pile and is inserted into the gaps of the corrugated conduit tube 31 and the main portions such as the four corners and both side edges of the protective plate body 5 through appropriate holes. And the tip is driven into the ground. The detent rod-shaped body 6 shown in FIG. 16 is a short pin-shaped body, the tip of which is stopped in the side surface or the gap of the conduit 31, and the upper part of the collective conduit 3 is embedded in the protective plate body 5. Cover and protect along the section.

Although the examples considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these examples, and includes the constituent features referred to in the present invention and referred to in the present invention. The invention can be carried out by appropriately modifying it within a range that achieves the object and has the following effects.

[0024]

As is apparent from the above description, the present invention has a structure in which the upper surface of a collective conduit tube buried in the ground is covered with a protective member to protect it, so that a pickaxe or the like can be used during construction. The impact of excavating tools, falling objects, etc. on the conduit tube will be destroyed and the coating of the stored wires will not be damaged. In particular, at curved parts such as corners of roads, the end of the top wall and eaves of the protective member is layered at the joint, so the tip of the pickaxe etc. does not stick to the conduit and completely It can be protected in a simple state.

The electric wire tube to which the present invention is applied has a structure in which a short tube portion having a rectangular cross section and a short tube portion having a circular cross section are alternately and continuously connected like a bellows. Has the appearance of a collective electric wire tube simply by being stacked due to the action of the rectangular cross section. Therefore, in the present invention, it suffices to protect only the upper surface of the collective conduit and does not require an expensive spacer / joint member as in the prior art.

Further, as a side effect, by using industrial waste as a raw material resin, it is possible to provide a product at a low price, and thus only to bring a profit to the manufacturer. In the end, there is a remarkable effect that the reuse of resources can make a great contribution to society.

[Brief description of drawings]

FIG. 1 is a perspective view showing an installed state of a first embodiment.

FIG. 2 is a perspective view of a straight line protection member 1 according to the first embodiment.

FIG. 3 is a perspective view of an implementation state of a straight line protection member 1.

FIG. 4 is a perspective view of a curved portion protection member 2 according to the first embodiment.

FIG. 5 is a perspective view of an implementation state of the curved portion protection member 2 of the first embodiment.

FIG. 6 is a perspective view of an essential part of another embodiment of the first embodiment.

FIG. 7 is a protection member 1 for a straight portion and a protection member 2 for a curved portion.
Sectional drawing of the modification of FIG.

FIG. 8 is a protection member 1 for a straight portion and a protection member 2 for a curved portion.
Sectional drawing of the other modification of FIG.

FIG. 9 is a perspective view of an essential part showing a usage example of the first embodiment.

FIG. 10 is a perspective view of a main part showing another example of use of the first embodiment.

FIG. 11 is a perspective view of a curved portion protection member according to a second embodiment.

FIG. 12 is a perspective view of a curved portion protection member according to a second embodiment in an implemented state.

FIG. 13 is a perspective view of a modified example of the curved-portion protection member of the second embodiment.

FIG. 14 is a perspective view of the main body of the third embodiment.

FIG. 15 is a perspective view of an implementation state of the third embodiment.

FIG. 16 is a perspective view of a main part of a conduit.

FIG. 17 is a perspective view of a main part of a conduit tube.

FIG. 18 is an end view of a protective device for a collective conduit of a conventional example.

[Explanation of symbols]

1 Protective member for straight section 2 Protective member for curved section 3 conduit conduit 4 manholes 5 Protective plate body 6 Stopping pile a One end of the curved portion protection member of the first embodiment b The other end of the curved portion protection member of the first embodiment c Eaves of the protective member for a curved portion of the second embodiment d Sectional square wall of conduit ￲Circular wall section of conduit f fixing hole g head

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16L 1/024 H02G 9/06

Claims (4)

(57) [Claims] 1. A resin corrugated conduit tube (31) having an outer surface shape of a pipe wall in which a rectangular wall portion (d) and a circular wall portion (e) having a cross section are alternately arranged in the pipe axial direction. A protective device for a collective conduit tube (3) in which a plurality of the above are integrated, and a protective member for a straight portion (1) having a gutter-shaped cross-sectional shape having bent edge portions on both sides,
Similarly, with a gutter-shaped cross-sectional shape, when connecting the protection device in series, it is composed of a curved part protection member (2) having an end shape so that no gap is formed on the upper surface at the connection part, The upper surface of the collective conduit (3) to be embedded, or the upper surface and the lower surface, the linear portion protection member (1) is continuously covered in a straight line portion, the curved portion protection member ( 2) is a conduit conduit that is arranged and covered along the curved line of the buried portion so that there is no gap between the linear member protection member (1) or the curved member protection member (2) that is connected. Protector. 2. The curved portion protection member (2) has one end (a).
Is a gutter-shaped cross-section and the other end (b) is similar to the one end (a) and has a shape that tapers to a size including the one end (a), and is installed in a curved portion Is, the one end (a) of the front curved member protection member (2), the other end (b) of the subsequent curved portion protection member (2) are overlapped with each other at a predetermined angle. The protective device for the collective electric conduit according to claim 1, wherein the protective device is arranged as follows. 3. The protective member (2) for curved portions has a gutter-shaped cross-sectional shape having bent edge portions on both sides, and at least one end of the upper surface thereof protrudes as an eaves (c). If it is installed in a curved part, it is a protective member in front of the curved part.
(2) Or the eaves (c) of the subsequent curved portion protection member (2) is covered on the end of the straight portion protection member (1), and they are arranged at a predetermined angle to each other. 1. The protective device for a collective conduit described in 1. 4. A resin corrugated conduit tube (31) in which the outer wall shape of a tube wall is such that a rectangular wall section (d) and a circular wall section (e) are alternately arranged in the tube axis direction. A protective device for a collective conduit (3) in which a plurality of the integrated conduits (3) are integrated, the holes being spread over a plurality of rows at a position corresponding to a gap between the side surface of the collective conduit (3) and the parallel resin corrugated conduit (31). (f) consists of a protective plate body (5) perforated, and a detent bar (6) for fixing the protective plate body (5) on the installation of the assembly conduit (3), After covering the protective plate body (5) on the upper surface of the collective conduit (3), place the detent rod-like body (6) through the hole (f) on the side surface or the gap of the collective conduit (3). A protective device for a collective conduit in which the upper surface of the collective conduit (3) is covered with a protective plate body (5).