JPH06346479A - Invert block - Google Patents

Abstract

PURPOSE:To provide an invert block which can be easily installed on the bottom of a manhole or a house-inlet connected to an inflow pipe and an outflow pipe and guide sewage fed from the inflow pipe to the outflow pipe. CONSTITUTION:An inverter block is composed of an outflow block 1 having a first groove 13 cut on the upper face of a nearly fan-shaped support 11 in plan view and a nearly circular recession 12 in plan viw, connected to the inner sideface of the support 11, an inflow block 2 having a nearly fan-shaped form in plan view and a second groove 21 cut on the upper face thereof, and a plurality of combined blocks 3, 4, 5 having a nearly fan-shaped form and respectively set at specified angles. These inflow block 1, outflow block 2, and a plurality of combined blocks 3, 4, 5 are appropriately combined to form nearly circular disk.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY 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 flowing from the inflow pipe to the outflow pipe. Invert block.

[0002]

2. Description of the Related Art Conventionally, an invert is formed at the bottom of a manhole or a sewage basin for smoothly guiding sewage, rainwater, etc. flowing into the basin from an inflow pipe connected to the manhole or the bottom. In order to form this invert on site, a skilled plasterer enters the manhole and finishes the iron while pouring concrete, which requires highly skilled techniques and heavy labor, and it takes time to produce it. . Therefore, recently, various invert blocks have been proposed and put into practical use on the assumption that the positions of the inflow pipe and the outflow pipe are different at the construction site. For example, the invert block described in Japanese Utility Model Publication No. 61-45266 uses a combination of gutter-shaped blocks formed in a linear shape or a curved shape. Further, the invert block proposed by Japanese Patent Laid-Open No. 194026/1990 uses a combination of blocks obtained by dividing a disc body having grooves formed in a diameter shape in the length direction of the grooves.

[0003]

However, although the invert block described in Japanese Utility Model Publication No. 61-45266 is excellent in adaptability to the installation situation of the outflow pipe and the inflow pipe, each block is gutter-shaped. Therefore, the installation stability is poor and it is necessary to place a large amount of concrete at the bottom of the installation site. In addition, since each block has a different usage frequency, it has a problem that productivity is poor. Further, the invert block described in JP-A-3-194026 has excellent installation stability, less casting concrete, and good productivity, but the outflow pipe and the inflow pipe are not arranged in a substantially straight line. It has a problem that it cannot deal with

[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 an inner side surface of the support portion is formed. An outflow block formed by joining recesses each having a substantially circular planar shape, an inflow block having a substantially fan-shaped planar shape and a second groove dug 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 disposed in a substantially disc shape, and the bottom portion of the manhole or the like is provided. It relates to an invert block, which is characterized by being installed in.

[0005]

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

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

The outflow block 1 has a structure in which a supporting 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 arcuate surface having a diameter substantially the same as the diameter of the outflow pipe A is dug. In the embodiment shown in the drawings, the recess 12
Is approximately the same height as the bottom of the first groove 13, and its upper surface is slightly inclined and is lowered toward the first groove 13 (FIG. 4). Further, the support portion 11 is formed in a substantially 90 ° fan shape.

Further, the inflow block 2 has a substantially fan-shaped planar shape, and a second groove 21 having an arcuate surface having substantially the same shape as the diameter of the inflow pipe B is dug on 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 is substantially fan-shaped with a plane shape of about 30 °, and the second block 4 is formed.
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 °.

Then, the recess 12 of the outflow block 1
Since the inflow block 2, the first block 3, the second block 4, and the third block 5 are arranged in an annular shape while being adjacent to each other, the blocks can be installed in a substantially disc shape. The inner surfaces of 1 to 5 are arcuate surfaces having a diameter substantially the same as the diameter of the recess 12.

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

An example of arrangement of the blocks 1 to 5 will be shown below. First, when it is necessary to install the outflow pipe A and the inflow pipe B so as to be orthogonal to each other 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 may be arranged like this. And the first to the third
If the blocks 3, 4, and 5 are located outside the concave portion 12 of the outflow block 1 and arranged adjacent to each other to form an annular shape, the blocks 1 to 5 can be formed into a disk shape.

In addition, the outflow block 1 (the supporting 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, the blocks 1 to 5 are integrated by arranging so that voids are appropriately formed in the amount of 2 ° to 360 °, and the voids of the adjacent blocks are filled with mortar or concrete.

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. 5, between the outflow block 1 and the inflow block 2. It suffices to interpose the first block 3 in a narrow space between the first block 3 and the second block 4 and the third block 4 in a wide space between the blocks 1 and 2.

Further, although not shown, the outflow pipe A and the inflow pipe B
When it is necessary to install the pipes at an angle of about 150 °, the second block 4 is interposed in the narrow space between the outflow block 1 and the inflow block 2, and the outflow pipe A When it is necessary to install the inflow pipe B and the inflow pipe B in a substantially straight line (at an angle of about 180 °), the third block 5 and the first block 3 and the second block 4 are provided between the two blocks. Should be interposed.

As described above, the invert block of the present invention is excellent in adaptability to the installation condition of the outflow pipe and the inflow pipe, and further, the blocks 1 to 5 are appropriately combined with the recess 12 of the outflow block 1 as a center, Since they can be arranged in a disk shape, installation stability is good, and a small amount of concrete or mortar to be placed on site is sufficient.
Therefore, the construction can be performed extremely easily and in a short time.

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

Also, in the illustrated embodiment, three combination blocks are used.
Although the example of individually using is shown, the number is not particularly limited and can be set appropriately.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-mentioned embodiments, and can be carried out in any manner as long as the configuration described in the claims is not changed. You can

[0020]

As described above, the invert block of the present invention can be easily arranged according to various installation conditions (angles) of the outflow pipe and the inflow pipe, and in addition, between the blocks in the field. It is possible to arrange extremely stably by pouring or filling a small amount of intermixed concrete or mortar into the void. Then, sewage or the like flowing in from the inflow pipe can be guided to the outflow pipe.

Further, the invert block of the present invention can be easily produced by arranging a dam plate or a mold material in a circular groove-shaped mold and placing concrete, and its productivity is also very good. It is a thing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an invert block of 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 at a substantially right angle.

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

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

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

[Explanation of symbols]

 1 Outflow Block 11 Supporting Part 12 Recess 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)

[Claims] 1. An outflow block in which a first groove is dug in an upper surface of a support portion having a substantially fan-shaped planar shape, and a concave portion having a substantially circular planar shape is joined to an inner surface of the support portion. , An inflow block having a substantially fan-shaped plane and a second groove dug in the upper surface, and a plurality of combination blocks each having a substantially fan-shaped plane 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 are installed at the bottom of a manhole or the like.