JP2606783B2 - Invert block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention can be easily arranged at the bottom of a manhole or a sewage basin connecting an inflow pipe and an outflow pipe, and can guide sewage and the like flowing from the inflow pipe to the outflow pipe. Regarding invert block.

[0002]

2. Description of the Related Art Conventionally, at the bottom of a manhole or a sewage basin, there is formed an invert for smoothly guiding sewage, rainwater and the like flowing into the basin from an inflow pipe connected thereunder to an outflow pipe. To form this invert on site, a skilled plasterer enters the manhole, finishes the iron while casting concrete, requires a high level of skill and heavy labor, and takes time to manufacture . Therefore, recently, various invert blocks have been proposed and put to practical use, assuming that the positions of the inflow pipe and the outflow pipe are individually different at the construction site. For example, an invert block described in Japanese Utility Model Publication No. 61-45266 uses a combination of gutter-shaped blocks formed in a straight line or a curved line. The invert block proposed in Japanese Patent Application Laid-Open No. H3-194026 is used by combining blocks obtained by dividing a disk having a groove formed in a diameter shape in the length direction of the groove.

[0003]

However, the invert block described in Japanese Utility Model Publication No. 61-45266 has excellent compatibility with the installation conditions of the outflow pipe and the inflow pipe, but each block has a gutter shape. Therefore, the installation stability is poor, and it is necessary to cast a large amount of concrete at the installation site at the bottom. Further, each block has a problem that the productivity is poor because the frequency of use of each block is different. Further, the invert block described in Japanese Patent Application Laid-Open No. HEI 3-19426 is excellent in installation stability, has less castable concrete, and has good productivity, but the outflow pipe and the inflow pipe are not arranged in a substantially straight line. There is a problem that can not be addressed.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above, and a first groove is dug in the upper surface of a support portion having a substantially fan-shaped planar shape, and the first groove is formed on the inner surface of the support portion. An outflow block formed by joining recesses having a substantially circular planar shape, an inflow block having a substantially fan-shaped planar shape, and a second groove formed in the upper surface, and a substantially fan-shaped planar shape. It is composed of a plurality of combination blocks each set at a predetermined angle, and the outflow block, the inflow block, and the plurality of combination blocks are appropriately combined and arranged in a substantially disk shape, and a bottom portion of a manhole or the like is provided. The present invention relates to an inverted block characterized by being installed in an inverting block.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

The invert block according to the present invention is roughly composed of an outflow block 1 connected to an outflow pipe A through which sewage or the like flows, an inflow block 2 connected to an inflow pipe B into which sewage or the like flows, and combination blocks 3 and 4. , 5 (hereinafter, for convenience, the first block 3, the second block 4, the third block 5
And ).

The outflow block 1 has a configuration in which a support portion 11 having a substantially fan-shaped planar shape and a concave portion 12 having a substantially circular planar shape are integrated with each other. A first groove 13 having an arc surface having substantially the same diameter as the diameter of the outflow pipe A is dug. In the embodiment shown in the drawings, the recess 12 is used.
Is approximately the same height as the bottom of the first groove 13, and the upper surface thereof is slightly inclined and becomes lower toward the first groove 13 (FIG. 4). The support portion 11 is formed in a substantially fan shape of 90 °.

The inflow block 2 has a substantially fan-shaped planar shape, and a second groove 21 having a circular arc surface substantially the same shape as the diameter of the inflow pipe B is dug in the upper surface. . still,
In the embodiment shown in the drawings, the outflow block 2 is formed in a substantially fan shape of 88 °.

Further, in the embodiment shown in the drawings, the first block 3 has a substantially fan shape with a plane shape of about 30 °, and the second block 4
Has a substantially fan shape with a plane shape of about 60 °, and the third block 5 has a substantially fan shape with a plane shape of about 90 °.

The recess 12 of the outflow block 1
By arranging the inflow block 2, the first block 3, the second block 4, and the third block 5 in an annular shape while adjoining each other, the blocks can be installed in a substantially disk shape. The inner surfaces 1 to 5 are arc surfaces having a diameter substantially equal to the diameter of the concave portion 12.

Each of the blocks 1 to 5 can be easily manufactured by, for example, arranging a weir plate or a shape material in a formwork and casting concrete, but the manufacturing method is not particularly limited.

An example of the arrangement of the blocks 1 to 5 will be described below. First, when it is necessary to install the outflow pipe A and the inflow pipe B orthogonally in the manhole C as shown in FIGS. 2 and 3, the outflow block 1 and the inflow block 2 are adjacent to each other. It should just be arranged like. And the first to third
If the blocks 3, 4, and 5 are positioned outside the concave portion 12 of the outflow block 1 and are arranged adjacent to each other to form an annular shape, the blocks 1 to 5 can be formed into a disk shape.

The outflow block 1 (the support portion 11 thereof),
The sum of the angles of the inflow block 2 and the first to third blocks 3 to 5 is 358 ° (= 90 + 88 + 30 + 60 + 90).
However, it is arranged such that a gap is formed as much as 2 ° less than 360 °, and mortar or concrete is filled in the gap between adjacent blocks to integrate the blocks 1 to 5 with each other.

When it is necessary to install the outflow pipe A and the inflow pipe B at an angle of about 120 °, as shown in FIG. The first block 3 may be interposed within a narrow space between the first and second blocks 4 and 3, and the second block 4 and the third block 4 may be installed within a wide space between the two blocks 1 and 2.

Further, although not shown, an outflow pipe A and an inflow pipe B
If it is necessary to install the second block 4 in a narrow space between the outflow block 1 and the inflow block 2, and the outflow pipe A And the inflow pipe B need to be installed substantially linearly (at an angle of about 180 °), the third block 5, the first block 3, the second block 4, May be interposed.

As described above, the invert block according to the present invention has excellent responsiveness to the installation state of the outflow pipe and the inflow pipe, and furthermore, the blocks 1 to 5 are appropriately combined with the recess 12 of the outflow block 1 as a center, and Since it can be arranged in a disk shape, the installation stability is good, and the amount of concrete or mortar to be cast on site is small.
Therefore, the construction can be performed very easily and in a short time.

In the illustrated embodiment, the outflow block 1 is 9
0 °, inflow block 2 at 88 °, first block 3 at 3
0 °, the second block 4 is 60 °, and the third block 5 is 90
°, the outflow pipe A and the inflow pipe B are 90 °, 120 °, 1
Although the description has been made so as to be able to cope with the case of installation at an angle of 50 ° or 180 °, each angle of each of the blocks 1 to 5 may be appropriately set in consideration of handleability, workability, and the like.
For example, when each of the first block 3 and the second block 4 is set to 45 °, the outflow pipe A and the inflow pipe B are 90 °.
It is possible to cope with the case where they are installed at an angle of °, 135 °, 180 °.

In the illustrated embodiment, three combination blocks are used.
Although an example of using the number is shown, the number is not particularly limited, and can be set as appropriate.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and can be implemented in any manner unless the configuration described in the claims is changed. Can be.

[0020]

As described above, the invert block according to the present invention can be easily installed in accordance with various installation conditions (angles) of the outflow pipe and the inflow pipe. It is possible to dispose the concrete or mortar in a very small amount only by casting or filling a small amount of concrete or mortar. Then, the waste water or the like flowing from the inflow pipe can be guided to the outflow pipe.

Further, the invert block of the present invention can be easily manufactured by arranging a weir plate or a mold member in a groove-shaped mold and placing concrete, for example, and the productivity is extremely good. Things.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an invert block according to the present invention.

FIG. 2 is a perspective view showing an arrangement state of an invert block when an outflow pipe and an inflow pipe are installed in a substantially right angle.

FIG. 3 is a cross-sectional view showing an arrangement state of an invert block in a case where an outflow pipe and an inflow pipe are installed at a substantially right angle.

FIG. 4 is a sectional view taken along the line ZZ in FIG. 3;

FIG. 5 is a cross-sectional view showing an arrangement state of an invert block when an outflow pipe and an inflow pipe are installed so as to be separated from each other at an angle of about 120 °.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outflow block 11 Support part 12 Depression 13 First groove 2 Inflow block 21 Second groove 3 First block (combination block) 4 Second block (combination block) 5 Third block (combination block)

Claims (1)

(57) [Claims] An outflow block formed by forming a first groove in a top surface of a support portion having a substantially fan-shaped planar shape, and joining a concave portion having a substantially circular planar shape to an inner surface of the support portion; An inflow block having a substantially fan-shaped planar shape and a second groove formed in an upper surface thereof, and a plurality of combination blocks each having a substantially fan-shaped planar shape and set at a predetermined angle. An invert block characterized in that the outflow block, the inflow block, and a plurality of combination blocks are appropriately combined and arranged in a substantially disk shape, and installed at the bottom of a manhole or the like.