JP4509331B2 - Underground pipe structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a synthetic resin case in which convex parts and concave parts are alternately positioned in the axial direction of the pipe, and the single or plural underground pipes in which they are formed in an annular shape or a spiral shape are divided into two. It is related with the underground pipe structure comprised so that the cross-sectional shape which consists of may be covered with the substantially rectangular-shaped protective member one by one.
[0002]
[Prior art]
In recent years, in addition to a large number of power cables, a large number of communication cables have been laid in the ground, and in order to lay these many cables, a large number of underground underground pipes that serve as protective pipes are buried. There is a need to. Then, each of the buried underground pipes is covered with a protective member divided into two in the vertical direction, and the protective members adjacent in the horizontal direction are integrated to increase the strength of the protective member. Of course, there is no gap between the adjacent protective members so that earth and sand can enter, and after refilling the earth and sand, the sand enters the gap and the road partially collapses. So that no troubles occur.
Therefore, as a conventional underground pipe structure, for example, there is one disclosed in JP-A-9-105479. This is a plurality (four pieces) that cover the underground pipe with a lower block having a plurality of parallel grooves on the upper surface and an upper block having a plurality of parallel grooves on the lower surface, and vertically penetrate each block. A long bolt is inserted into the bolt hole and then tightened with a nut to integrate the upper and lower blocks.
[0003]
[Problems to be solved by the invention]
According to the above configuration, when covering the underground pipe while stacking a large number of blocks in the vertical direction, not only must the blocks be stacked while aligning the bolt holes of each block, The larger the number of blocks to be stacked, the more carefully and accurately the alignment is, and the work is very troublesome and troublesome. Even if the positioning is performed carefully and accurately, there is a disadvantage in handling in that it may not be performed smoothly due to a positional shift at the stage of inserting the bolt into the bolt hole.
In addition, since the blocks can be integrated only in the vertical direction, in order to stack a large number of blocks in the vertical direction, not only the above-described disadvantages but also a deep groove must be dug. Therefore, when hard rock is buried in the upper part of the ground relatively deeply, deep grooves cannot be dug. Therefore, a block with many parallel grooves on the left and right must be used. In addition, the block having a large number of parallel grooves has a great increase in weight and lateral width, which is disadvantageous in handling.
[0004]
In view of the above-mentioned situation, the present invention intends to solve the problem that the work can be easily and quickly performed, and can be arranged in the horizontal direction while using the same protective member. The point is to provide a tube structure.
[0005]
[Means for Solving the Problems]
In the underground pipe structure of the present invention, in order to solve the above-mentioned problem, the underground pipes in which convex parts and concave parts are alternately positioned in the axial direction of the pipe and are formed in an annular shape or a spiral shape. A buried underground pipe structure in which a cross-sectional shape made of a synthetic resin case divided into two or more is sequentially covered with a substantially rectangular protective member, and the both cases are locked and held. The case is provided with a protruding portion that enters the recessed portion of the underground pipe by covering the underground pipe with the two cases. And a means for integrating a plurality of the protection members provided side by side in the left-right direction, the up-down direction, or the left-right up-down direction, and the one end surface in the tube axis direction of the case is disposed closer to the center in the left-right width direction of the case. On the protruding curved surface having a predetermined radius of curvature protruding toward the side Form, and, and the pipe axis direction end surface of the case formed by the radius of curvature and the same radius of curvature on the concave side curved surface that has entered enough lateral width direction central portion side inwardly of the case It is characterized by that. Therefore, the underground buried pipes arranged along the arrangement route are sequentially covered with a protective member made of two cases made of synthetic resin. Then, by locking the locked portion provided in the one case and the locking portion provided in the other case, it is possible to hold the underground tube in a state covering both cases. it can. When the operation of covering the underground pipe with the protection member is completed, the plurality of protection members provided side by side in the left-right direction, the up-down direction, or the left-right up-down direction can be integrated by means for integrating them. Further, by covering the underground pipe with the two cases, the protrusion provided in the case enters the recess of the underground pipe, and the case moves in the direction of the tube axis with respect to the underground pipe. Can be reliably prevented. Further, by forming the case from a synthetic resin, the weight can be reduced, and the protrusions and the like can be integrally formed when the case is molded. In addition, by making the two cases the same shape, one type of case can be used. Further, since the end surfaces of the case are formed as described above, when the case is arranged along the curved path, a large gap is not generated between the end surfaces of the cases adjacent to each other in the curved path direction. Can cover underground pipes. Further, in the case of a straight path, the concave side curved surface of the case located on the upper side of the path and the protruding side curved surface of the case located adjacent to the lower side of the path are in contact with each other without a gap.
[0006]
You may comprise the said means from the tightening member for winding around the outer periphery groove | channel formed in the outer surface of the said protection member, and tightening along the outer periphery groove | channel.
When the protective member is integrated, the tightening member is wound around the outer peripheral groove and tightened, so that the tightening member can be positioned in the outer peripheral groove without being displaced relative to the protective member.
[0007]
A locked portion integrally formed on the outer surface of the specific protective member, and a position adjacent to the specific protective member in the left-right direction, the vertical direction, or the left-right vertical direction to lock the locked portion with the locked portion. You may comprise from the latching | locking part integrally formed in the outer surface of said other protection member to do.
By configuring as described above, it is not necessary to provide a fastening member that is a separate member as shown in claim 2, but it is also possible to lock both the locked portion and the locking portion. Can be integrated.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, each of a plurality (four in the figure) of underground pipes 1 for accommodating cables such as electric wires is covered with a protective member 2, and then the plurality (four in the figure) of protective members 2. 1 shows a buried underground pipe structure made of synthetic resin (which may be made of cloth or metal) and integrated by a fastening band 3 as a belt-like fastening member. The underground pipe 1 may be implemented by providing two, three, five or more in addition to the four.
[0010]
As shown in FIGS. 2 and 3, the underground pipe 1 is made of a synthetic resin in which convex portions 1 </ b> A and concave portions 1 </ b> B are alternately positioned on the outer surface in the axial direction of the tube and are formed in an annular shape. However, the convex part 1A and the concave part 1B may be formed in a spiral shape. The material of the underground pipe 1 is preferably a synthetic resin that is advantageous in terms of weight reduction, flexibility, manufacturing ease, and the like, but may be made of other materials.
[0011]
The protective member 2 is composed of two cases 2A and 2A made of synthetic resin that are divided into two in the vertical direction. Since these cases 2A and 2A are the same, one lower case 2A will be described. Then, as shown in FIGS. 2 and 3, the bottom wall 4 has a rectangular shape that is long in the tube axis direction, and is raised upward from the four outer peripheries of the bottom wall 4 and is positioned on both sides in the tube axis direction. A pair of front and rear vertical walls 5 and 5 formed with a semicircular arc-shaped protruding portion 5A that enters the recessed portion 1B of the underground tube 1 and a pair of left and right vertical walls 6 and 6 orthogonal to the tube axis direction, A plurality of support portions 7 for connecting the pair of left and right vertical walls 6 and 6 to increase the shape retention strength of the case 2A and supporting the underground pipe 1 and the inner surfaces of the pair of left and right vertical walls 6 and 6 Ribs 9 that bulge inward at each of the four front and rear sides of the four ribs 9 Convex portions 10 and 10 as locking portions extending upward from the upper ends of the specific ribs 9 and 9, and holes as locked portions formed downward from the upper end surfaces of the remaining ribs 9 and 9. 11 and 11. Therefore, by covering the underground pipe 1 with the two cases 2A and 2A from above and below, the convex portions 10 and 10 of the cases 2A and 2A and the holes 11 and 11 are locked, and the underground The pair of front and rear projections 5A and 5A enter the recess 1B of the buried tube 1 so that the underground buried tube 1 does not move in the tube axis direction with respect to the cases 2A and 2A. By moving the support portion 7 into the recess 1B of the underground tube 1 to form the protruding portion 5A, the underground tube 1 can be further prevented from moving in the tube axis direction with respect to the cases 2A and 2A. There are advantages that can be done. Further, an outer peripheral groove M for preventing the tightening band 3 from entering and being displaced in the substantially central surface of the pair of left and right vertical walls 6 and 6 and the bottom wall 4 in the tube axis direction (front and rear direction). Although formed, it does not have to be. The number, shape, formation position, and the like of the protrusions 10 and 10 and the holes 11 and 11 may be other than those shown in the drawing.
[0012]
By sequentially covering the underground pipe 1 with the protective member 2 configured as described above, the fastening band 3 is wound and tightened along the outer peripheral grooves M of the four protective members 2 in the vertical and horizontal directions. Four protection members 2 can be integrated (see FIG. 1). Although it is advantageous in terms of handling by configuring the protective member 2 to cover only one underground pipe 1, the protective member 2 is configured to cover two or more underground pipes 1. May be.
[0013]
A plurality of the protective members 2 may be integrated as shown in FIG. That is, the locking protrusions 12 having a posture along the tube axis direction (longitudinal direction) are integrally formed on two outer surfaces (upper surface and right side surface) adjacent to each other in the outer peripheral direction of the one protective member 2 located on the upper side, In addition, a locking groove 13 for locking the locking projection 12 on the right side surface is formed on the remaining one outer surface (left side surface) along the tube axis direction (longitudinal direction) and positioned on the lower side. A locking groove 13 for locking the locking protrusion 12 on the upper surface is formed on the lower surface of the other protective member 2 along the tube axis direction (longitudinal direction), and the locking protrusion 12 and the locking groove 13 are formed. Are locked together so that they can be connected. Thus, by providing the protective member 2 with the locking protrusion 12 and the locking groove 13, not only the special tightening band 3 as described above can be made unnecessary, but also the connecting operation can be performed only by locking. be able to. In addition, as shown in FIG.5 and FIG.6, by forming the said convex part 10 and the hole 11, there exists an advantage which can avoid that the latching of cases 2A and 2A is easily cancelled | released. In the figure, the bulging portion 10a having a larger diameter than the other portions is formed at the tip of the convex portion 10, and the diameter of the bulging portion 10a is larger than that of the hole 11 capable of accommodating the bulging portion 10a in the inner portion of the hole 11. Although the accommodating part 11a is formed, the shape of these convex part 10 and the hole 11 is not limited to the shape shown by a figure.
[0014]
Further, as shown in FIG. 7, vertical grooves 15 that are wider toward the back side (inner side) are formed on the left and right lateral sides of the protective member 2, and the vertical grooves 17 of the adjacent protective members 2, 2 are formed. The locking member 14 having the shape shown in FIG.
[0015]
Further, the two cases 2A and 2A constituting the protective member 2 are constituted by the convex portions 10 and 10 and the holes 11 and 11, so that the locking of the both is released and the inspection and the case replacement are easy. 5 and FIG. 6 may be used for locking and fixing, and although not shown, a claw portion for locking and fixing both cases 2A and 2A. The two cases 2A and 2A integrated by locking cannot be easily removed by providing a plurality of locking protrusions having the same number and the same number of locking grooves for locking to the locking protrusions. It is good also as a structure locked and fixed.
[0016]
As shown in FIG. 8, the protruding curved surface having a predetermined radius of curvature that protrudes outward from the one end surface 2 </ b> B in the tube axis direction of the cases 2 </ b> A and 2 </ b> A toward the center in the left-right width direction of the cases 2 </ b> A and 2 </ b> A. And the other end surface 2C in the tube axis direction of the cases 2A, 2A is the same as the radius of curvature in the concave side curved surface that enters the inner side toward the center in the left-right width direction of the cases 2A, 2A. It is formed with a curvature radius of. Therefore, by covering the underground buried pipe 1 arranged on the curved path shown in the figure with the cases 2A and 2A, it is possible to avoid the generation of a gap between the adjacent protective members 2 and 2 on the curved path. To be able to. In the figure, since the degree of bending of the bending path is relatively small, there is no gap. However, even when the degree of bending is large, a large gap is generated between the protective members 2 and 2. Can be avoided. Although not shown in the figure, in the straight path, the protruding curved surface 2B and the concave curved surface 2C can be brought into contact with no gap.
[0017]
【The invention's effect】
According to claim 1, by adopting a configuration in which the two cases are locked, the cases are not unexpectedly unlocked, and the operation of covering the underground pipe with the case can be performed easily and quickly. Can be integrated by means for integrating the case groups, so that the same protective member can be used and can be arranged in the left-right direction, both on the work surface and the manufacturing surface. An advantageous underground buried pipe structure can be provided. Further, by forming the case from a synthetic resin, the weight can be reduced, and the protrusions and the like can be integrally formed when the case is molded, which is further advantageous in terms of manufacturing. Moreover, by making two cases into the same shape, one type of case can be completed, which is further advantageous in terms of manufacturing. Furthermore, since the end surfaces of the cases are formed into curved surfaces, a large gap is not generated between the end surfaces of adjacent cases in the direction of the curved path when the cases are arranged along the curved path, so that the ground can be surely grounded. It is possible to cover the buried pipe, and it is not necessary to make a case having a shape matching the curved path, and it is possible to deal with all paths in the same case, which is advantageous in terms of cost.
[0018]
According to claim 2, by tightening the fastening member around the outer circumferential groove, the fastening member can be positioned in the outer circumferential groove without being displaced relative to the protective member, and the ground is highly reliable. It can be a buried pipe structure.
[0019]
According to the third aspect, there is no need to provide a tightening member as a separate member as shown in the second aspect, which is advantageous not only in cost, but also locks the locked portion and the locking portion. Both can be integrated, and the case locking operation and the operation of integrating a plurality of protective members can be performed at once (simultaneously) as described in claim 1, and the operation can be performed quickly. Can be further improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a plurality of protective members are integrated by a band.
FIG. 2 is a cross-sectional plan view showing a state in which the underground pipe is covered with a protective member.
FIG. 3 is an exploded perspective view showing a state immediately before the underground pipe is covered with a protective member.
FIG. 4 is a perspective view showing a state in which a plurality of protective members having different shapes are integrated.
FIG. 5 is a perspective view of the main part of the case showing another locking structure of the protective member.
6 is a longitudinal sectional view showing a state in which the locking projection and the hole shown in FIG. 5 are locked. FIG.
FIG. 7 is a perspective view showing a state immediately before a plurality of protective members are integrated by another means.
FIG. 8 is a plan view showing a state in which another shape of the protection member is connected along a curved path.
[Explanation of symbols]
1 Underground pipe 1A Convex
1B Recess 2 Protection member
2A Case 2B Projection side curved surface
2C Curved surface on the concave side 3 Fastening band 4 Bottom wall 5 Vertical wall
5A Protruding part 5a Upper surface 6 Vertical wall 7 Supporting part 8 Hole 9 Rib 10 Convex part
11 hole 11a receiving part
1212 Locking projection
13 Locking groove 14 Locking member
15 Vertical groove M Peripheral groove

Claims (3)

Cross-sectional shape consisting of a synthetic resin case in which convex parts and concave parts are alternately positioned in the tube axis direction, and one or a plurality of underground buried pipes formed into an annular shape or a spiral shape are divided into two Is an underground pipe structure constructed so as to be sequentially covered by a substantially rectangular protective member, and both the cases are provided with a locking part and a locked part for locking and holding the two cases. A plurality of the side-by-side or top-and-bottom direction or left-and-right top-and-bottom direction provided with a projecting portion that enters the recessed portion of the underground pipe by covering the underground pipe with the two cases. Means for integrating the protection member, and the one end surface in the tube axis direction of the case is formed as a protruding curved surface having a predetermined radius of curvature that protrudes outward toward the center in the lateral width direction of the case. And the other end surface of the case in the tube axis direction is the case. Underground tubular structure obtained by forming the intruded concave side curved surface as lateral width direction central portion side inwardly in the radius of curvature and the same radius of curvature.   2. The underground buried pipe according to claim 1, wherein the means comprises a single or a plurality of outer peripheral grooves formed on an outer surface of the protective member, and a tightening member for winding and tightening along the outer peripheral grooves. Construction.   A locked portion provided on the outer surface of the specific protective member, and a position adjacent to the specific protective member in the left-right direction, the vertical direction, or the left-right vertical direction to lock the locked portion with the locked portion. The underground buried pipe structure according to claim 1, wherein the underground buried pipe structure is configured by a locking portion provided on an outer surface of the other protective member.

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