JP4615678B2 - Underground pipe unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underground pipe unit capable of arranging underground pipes along an arrangement path, and more specifically, single or multiple underground pipes by a support member having a single or a plurality of through holes. The present invention relates to underground pipe units that support pipes.
[0002]
[Prior art]
The above-mentioned underground buried pipe units are obtained by stacking the underground buried pipe units in which one or a plurality of underground buried pipes are supported by a support member, for example, by extension on the existing underground buried pipe units. It is comprised so that the underground burial pipe of this can be laid.
And if it is transported in a state where a plurality of underground pipes are bundled by the support member or arranged in the arrangement route, the underground pipes are carried one by one or arranged in the arrangement route. Compared with what is being done, not only is it advantageous in terms of transportation, but also the construction period of underground pipes can be shortened.
However, in the above configuration, there is a problem that a bending phenomenon occurs in which the intermediate portion in the tube axis direction of the underground pipe is drooped due to its own weight between the supporting members constituting the underground pipe unit. For example, there is one disclosed in Japanese Patent No. 3023664. This is because a fixture composed of a plurality of spacers and a binding band for concentrating and holding a plurality of embedding pipes in parallel with each other at a predetermined interval is provided at predetermined intervals between the embedding pipes, and embedded between these fixtures. The vertical gap between the pipes is closed with a filling member made of foamed polyethylene.
[0003]
[Problems to be solved by the invention]
According to the above configuration, the operation of concentrating and holding a plurality of pipes for embedding in parallel with a predetermined distance from each other using a plurality of spacers and a binding band is not only a troublesome and troublesome operation but also easily bundled. Since the buried pipes are firmly tightened by the binding band so that they do not fall apart, the filling member must be provided between the buried pipes located above and below before tightening, which reduces workability. It was.
In addition, it is possible to prevent the bending by holding the interval between the pipes at a predetermined interval by the filling member, but using the filling member sandwiching the upper and lower pipes to prevent the bending of the buried pipe located at the lowermost position. There was an inconvenience that could not be done.
In addition, since the filling member has a length that fills the gap between the spacers, the weight of the entire unit is drastically increased even if it is foamed polystyrene, and the handling property is lowered. In addition, there was a disadvantage that the material cost increased.
In addition, since the filling member is simply sandwiched between the upper and lower buried pipes, if the tightening by the binding band is loosened, the filling member may come off during transportation or construction. The detached filling member has to be sandwiched between the upper and lower burial pipes, which are difficult to handle.
In addition to filling the gap between the upper and lower buried pipes with the filling member, filling the gap generated in the left and right direction with the filling member also requires a filling member for the left and right direction. Not only does the increase in weight worsen, but also the inconvenience due to the detachment of the filling member becomes noticeable.
By the way, as the number of buried pipes increases, not only the weight increases, but also when filling members are sandwiched between upper and lower buried pipes constituting a multi-line underground pipe unit, It is very difficult to sandwich the filling member between the upper and lower buried pipes located on the inner side, and the operation of sandwiching the filling member is troublesome.
[0004]
In view of the above-mentioned situation, the present invention intends to solve the problem of suppressing the increase in weight, and without detaching during transportation or construction, and easily and quickly mounting the bent underground pipe. An object of the present invention is to provide a buried pipe unit including a spacer that can be reliably blocked.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the underground pipe unit according to the present invention is provided with a single or plural through-holes having dimensions equal to or larger than the outer dimensions of the underground pipe for cable installation. the members, in underground pipe unit comprising through support single or multiple in該地buried pipe, both ends to prevent the deflection of the underground pipe to a particular location between the support member of the underground buried pipe A single or plural C-shaped spacers that can be opened and have a restoring force are provided to be hugged , and as the spacers, a plurality of hollow, substantially fan-shaped cylindrical portions are mutually connected in the circumferential direction. A plate-shaped reinforcing portion that is provided with a gap and is connected in a C shape at the inner end in the radial direction to reinforce one end side in the central axis direction of the spacers of the cylindrical portions adjacent in the circumferential direction. the are characterized by using the one provided integrally . Therefore, it is adjacent to each other in the radial direction only by holding a single or a plurality of spacers at a specific portion of the underground pipe that has the space between the support members that merely support the underground pipe. Not only can the gap between underground pipes, that is, the distance between adjacent underground pipes in both the vertical direction and the vertical and horizontal directions be kept constant, but also the distance between the underground pipe located at the bottom and the ground It can be kept constant, and the underground pipe can be reliably prevented from being bent by its own weight. Moreover, the spacer installation can be completed simply by embracing the spacer in the underground pipe. For example, in the state where a large number of underground pipes are supported by the support member, the spacer can be quickly attached to any underground pipe. Can be attached.
[0006]
The spacer, both ends can opening operation, and, since the configuration at the C-shape having a restoring force, when the Dakitsuka the underground pipe by opening operation of the both ends of the spacer, both ends of the restoring force Is closed, and the spacer installation is completed.
[0008]
The outer shape of the supporting member is formed in a rectangular or square, by the center of the support member to form a plurality of through holes are match Te vertical or horizontal direction or the vertical and horizontal directions smell, weight balance well, It is not advantageous for transportation, and when the support members are stacked up and down, the weight applied to the lower support member can be dispersed in a balanced manner.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, polyurethane foam (foam) or the like in which a plurality of underground underground pipes 1 for accommodating cables such as electric wires are foamed (in a state where two pipes are aligned vertically) A plurality of (two in the figure) quadrangular support members 2 allow a certain degree of flexibility, specifically, movement (displacement) in the tube axis direction and small angle changes of the tube are allowed. In this state, the C-shaped spacer 3 for holding the underground buried pipe 1 is held at three specific positions between the support members 2 and 2 of the upper underground pipe 1. Thus, the underground pipe unit U is configured. The underground pipe unit U is prepared in advance in a factory or the like and then transported to the site for use. As shown in FIG. 3, the underground pipes 1 in each place are penetrated through the through holes 2 </ b> A of the spacer 2 one by one to constitute an underground pipe unit U. In addition, after arranging a plurality of underground pipe units U in the groove formed as the arrangement path along the groove, a female joint (not shown) provided at one end of one underground pipe 1 is provided. The operation of connecting the underground pipe units U and U located before and after the arrangement path by pushing in the male joint (not shown) of the other underground pipe 1 and pushing it in as many as necessary. Is completed.
[0010]
By setting the diameter dimension of the through hole 2A of the support member 2 to be slightly larger than the outer dimension of the underground pipe 1, the underground pipe 1 can be easily passed through the through hole 2A of the support member 2. However, the diameter dimension of the through hole 2A of the support member 2 may be set to be the same as the outer dimension of the underground pipe 1. The two through holes 2A, 2A formed in the support member 2 are configured so that the centers thereof coincide with each other in the vertical direction. Further, as the material of the support member 2, a polyurethane foam having a foaming property that can be easily reduced in weight is used. However, as other foaming synthetic resins, polystyrene foam, polyethylene foam, rigid vinyl chloride foam, urea foam, phenol foam Acrylic foam, cellulose acetate foam, other plastic foams, etc. can be used, but synthetic resins and synthetic rubbers that do not have foaming properties may be used. Other than the synthetic resin such as
[0011]
The underground pipe 1 is composed of a synthetic resin hose in which concave portions and convex portions are alternately spiraled on the outer surface, but a hose with a flat outer surface may be used. The material of the underground pipe 1 may be other than synthetic resin.
[0012]
The spacer 3 is made of a foamable synthetic resin that can be opened at both ends and has a restoring force. As shown in FIG. 3B, both ends of the spacer 3 are opened as shown by two-dot chain lines. In this state, it is mounted (embraced) in the underground pipe 1 from the radial direction (see FIG. 3A).
You may comprise the said spacer 3 in the shape shown in FIG.4 and FIG.5. More specifically, eight of the cylindrical portions 3A formed in a substantially fan shape with a hollow inside are integrally formed of synthetic resin in a substantially C-shape connected in the circumferential direction. 3B shown in the drawing is a plate-shaped reinforcing portion for reinforcing the ends of the cylindrical portions 3A, 3A adjacent to each other in the circumferential direction in the central axis direction of the spacer 3. As shown in FIG. 4, the spacer 3 having the above-described configuration is opened in the same manner as described above by holding the two cylindrical portions 3A and 3A located on the upper side and spreading them in the direction of the arrow, so that the underground tube 1 Wear it.
[0013]
Further, the spacer 3 may be configured as shown in FIGS. FIG. 6A shows that the spacer 3 attached to the underground tube 1 is provided with a spiral projection 3T that enters the concave portion of the outer surface of the underground tube 1 having a spiral uneven portion on the outer surface. There is an advantage that it is possible to prevent unintentional movement in the tube axis direction. FIG. 6B shows a case where the outer shape of the spacer 3 is changed to a quadrangle, and FIG. 6C shows an outer shape in which four corners of the outer shape of the spacer 3 in FIG. The case where it changes to a square is shown. FIG. 6 (d) shows a connecting part that connects the other ends of the half-divided half-members 3C, 3D that are divided into two so as to be freely swingable and open via hinges 3E. One protrusion 3F is formed on one side, and a recess 3G that is engaged with the protrusion 3F is provided. FIG. 6 (e) is composed of half-divided half members 3C, 3D divided into two, and each half member 3C or 3D is provided with the projection 3F at one end and the recess 3G at the other end. Thus, a connecting portion for connecting both 3C and 3D is formed. The half members 3C and 3D in FIG. 6 (e) are both of the same shape, and in this way, it is advantageous in terms of manufacturing, but may be changed to another shape.
[0014]
In FIG. 1, the spacer 3 is attached only to the underground pipe 1 positioned on the upper side. However, as shown in FIG. 7, the spacer 3 is also bent by attaching the spacer 3 to the underground pipe 1 positioned on the lower side. Not only can the prevention effect be enhanced, but also the gap between the underground pipe 1 located below and the ground can be filled, so that the lower underground pipe 1 is also reliably bent. There are advantages that can be prevented. Alternatively, the spacer 3 can be attached only to the underground pipe 1 located on the lower side. The number of spacers 3 attached is not limited to that shown in the figure.
[0015]
Although FIG. 1 and FIG. 7 show the case where the underground pipe unit in which the underground pipe 1 is arranged up and down is shown, a single underground pipe 1 may be supported by the support member 2. In addition, as shown in FIG. 8 (a), three underground pipes 1 may be arranged up and down, and as shown in FIG. 8 (b), four underground pipes are embedded. The pipes 1 may be arranged in the left / right / up / down direction as shown in the figure, or, as shown in FIG. 8 (c), the six underground pipes 1 may be arranged in the left / right / up / down direction as shown in the figure. In addition, as shown in FIG. 8 (d), nine underground pipes 1 may be distributed in the horizontal and vertical directions as shown in the figure. The number and arrangement of are not limited to those shown in the figure.
[0016]
FIG. 9 shows a state in which two underground pipe units each having four underground pipes 1 are stacked on an underground pipe unit having six underground pipes 1. In addition, the support member 2 is formed in a square shape so that it can be placed stably.
[0017]
【The invention's effect】
According to the first aspect of the present invention, not only the conventional fixing work using the spacer and the binding band is unnecessary, but also the workability that the filling member has to be arranged before tightening with the binding band is reduced. Without increasing the weight, it is possible to suppress an increase in weight by embedding a single or a plurality of spacers at a specific portion of the underground pipe that is penetrated and supported in a state where there is some flexibility between the support members. while also not be dislodged during and construction transportation, and easily and rapidly mountable, it is possible to reliably prevent become distorted is underground pipes, spacers handling surface and underground buried pipe unit It is advantageous in any of the usage aspects.
[0018]
Moreover, a spacer, both ends can opening operation, and, by configuring the C-shape that having a restoring force, be advantageous when performing mass production, it is possible to reduce the manufacturing cost.
[0019]
According to claim 2 , the outer shape of the support member is formed in a rectangle or a square, and the centers of the plurality of through holes formed in the support member coincide with each other in the vertical direction, the horizontal direction, or the vertical and horizontal directions. The weight balance is good, not advantageous for transportation, and when the support members are stacked up and down, the weight applied to the lower support member can be distributed in a well-balanced manner, and it is particularly stable and reliably prevented from shifting in the left-right direction. A well-stacked state can be maintained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of an underground pipe unit.
FIG. 2 is a longitudinal side view showing a part of the underground pipe unit.
3A is a cross-sectional view taken along a line II in FIG. 2, and FIG. 3B is a cross-sectional view showing a state immediately before mounting a spacer in FIG.
FIG. 4 is a front view showing another spacer.
5 is a perspective view of the spacer shown in FIG. 4. FIG.
6 (a), (b), (c), (d), and (e) are front views showing five different types of spacers. FIG.
FIG. 7 is a perspective view showing a part of the underground pipe unit in a state where a spacer is also attached to the lower underground pipe.
FIG. 8 is a cross-sectional view of underground pipe units with different numbers of underground pipes, (a) showing three cases, (b) showing four cases, (c) Shows the case of six, and (d) shows the case of nine.
FIG. 9 is a perspective view showing a state in which three underground pipe units are stacked.
[Explanation of symbols]
1 Underground pipe 2 Support member
2A Through hole 3 Spacer
3A Tubular part 3B Reinforcement part
3T protrusion 3C, 3D half member
3E Hinge 3F Protrusion
3G Concave U Underground pipe unit

Claims (2)

The support member having a single or a plurality of through-holes having outer dimensions equal to or larger dimension than that of the underground pipe cable distribution設用made through supporting the single or plural in該地buried pipe In underground pipe unit,
It said end to prevent deflection of該地in buried pipe to a particular location between the support members of the underground pipe is openable operation, and, by Dakitsuka a shaped spacers single or multiple C with a restoring force As the spacer, a plurality of hollow, generally fan-shaped cylindrical portions are provided at intervals in the circumferential direction, and are connected in a C shape at the inner end in the radial direction. An underground tube unit comprising a plate-like reinforcing portion integrally provided to reinforce one end side in the central axis direction of spacers of adjacent cylindrical portions .   The underground pipe according to claim 1, wherein the outer shape of the support member is formed in a rectangular shape or a square shape, and the centers of the plurality of through holes formed in the support member are aligned in the vertical direction, the horizontal direction, or the vertical and horizontal directions. unit.

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