JPH0826574B2 - Construction method of public basin - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a public basin for interposing a drainage pipe in a residential land or the like and a mounting pipe branched from a sewer main pipe to connect them.

[0002]

2. Description of the Related Art In the construction of sewerage, first, the sewer main is connected to the public basin and is installed underground. Then, according to the construction of the house in each residential area, the drain pipe from the house and the public basin are sequentially installed. Connection work may be done.

[0003] Then, conventionally as construction method of this type of public basins, as shown in FIG. 9, to connect the sweep removal opening tube 2 at the top of the opening 1, the attachment tube 4 to the outlet 3 of the lower portion There is known a method of using a public container main body 6 made of vinyl chloride resin in which a plurality of inflow ports 5 are formed in the side portion while connecting the above.

That is, regarding the installation from the sewer main 8 to the public basin 9, first, the mounting pipe 4 branched from the sewer main 8 is connected to the outlet 3 of the public basin body 6. Then, the cleaning port pipe 2 is connected to the opening 1 at the upper part of the public sickle main body 6 to stand up to the ground surface 10, and the upper opening 11 of the cleaning port pipe 2 is detachably closed by the cleaning port lid 12. Further, the inflow port 5 on the side is closed by a detachable plug body 15. In this state, the earth and sand are backfilled in the surroundings, and the public basin 9 is buried and installed.

Then, when the drainage pipe 16 is installed in each residential land, the surroundings are dug up to the public basin body 6 again, and any one of the plug bodies 15 for closing the inflow port 5 is removed to remove the drainage pipe.
We are back fill the soil by connecting 16 to the inlet 5. Shi
However, the public basin body 6 is installed in each of the buried residential areas.
The drainage pipe 16 of
It is buried in a deep position. So, normally, with drain pipe 16
It is not possible to directly connect the inflow port 5 of the public basin body 6
, A rod body 17 having connection openings at the top and bottom and sideways.
Straight connecting pipe 18, large elbow pipe 19, or not shown
Work to adjust the height position by combining universal pipe fittings
Process is required, equipment cost is high and work process is
It is complicated and has a problem that work efficiency is poor. Well
Also, for example, sewage described in JP-A-2-221534
Road construction methods are known. In this configuration, the sewer book
Bend bent to the pipe through the flexible branch pipe and mounting pipe
Connect the upper part of this bend to the temporary connection pipe and drop
With the main body of the box and the observation tube connected,
Bury them. And connection work with the drainage pipe in the residential area
To do this, dig up to the upper side of the bend and
The temporary connection pipe, and fit it in the depth position of the drainage pipe in the residential area.
Connect the main connecting pipe of appropriate length, and
Connect the drainage pipe in the ground and set the peep pipe to an appropriate length.
Cut it to the height of the ground surface and refill it again.
ing. However, this Japanese Patent Laid-Open No. 2-221534
With the configuration described in the publication, for example, the drainage pipe in the residential area is shallow.
Even if it is buried in the position, be sure to once
It is necessary to excavate a large part of
Use this connecting pipe with an appropriate length that matches the depth position of the water pipe.
It is necessary to adjust the height position of the
There is a problem that it is complicated and work efficiency is poor.

[0006]

As described above, as shown in FIG.
In the configuration shown, the public cell main body 6 is buried in a deep position to
17, vertical connecting pipe 18, large elbow pipe 19, or free
Flow of the drainage pipe 16 and the public basin body 6 by combining pipe fittings, etc.
In the method of connecting the inlet 5, the operation of connecting a plurality of members
Work process is required, equipment cost is high and work process is complicated.
There is a problem that the work becomes complicated and the work efficiency is poor. Also, special
In the configuration described in Kaihei 2-221534, for example,
Even if the drainage pipe in the residential area is buried in a shallow position,
It is always necessary to dig large up to the upper part of the bend
In addition, it is appropriate to match the depth position of the drainage pipe in the residential area.
It is necessary to adjust the height position of the pit main body using this length of connecting pipe.
However, there is a problem that the work process is complicated and the work efficiency is poor.
ing.

The present invention has been made in view of the above point, and drainage pipes buried at various depths can be easily connected to each other by using a rod or the like without adjusting the heights.
It is an object of the present invention to provide a method for constructing a public basin that can improve work efficiency.

[0008]

Method of constructing public Masuichi of the invention According to an aspect of, in facilities coating method public basins in which the upstream side of the mounting tube connected to the downstream side and the sewer main pipe drainage pipe is connected, the upper and lower An upright pipe having an opening in the upright pipe and a pit bottom member connected to the lower opening of the upright pipe and having a curved inner surface at the bottom form a public stile, and the upper opening of the upright pipe is closed by a lid. Then, with the upstream side of the attachment pipe connected to the main sewer pipe connected to the outlet which is the lower opening of the bottom wall member , the public basin is buried and the upright pipe is installed at the time of construction of the drainage pipe. The periphery of the pipe is excavated, an inflow port is bored at an arbitrary position on the side surface of the upright pipe in accordance with the position of the drain pipe, and the drain pipe is connected to this inflow port.

[0009]

According to the method of constructing a public slab of the present invention, a public stub composed of an upright pipe and a bottom member connected to the lower opening of the upright pipe is buried and installed. And drain pipe connection work
When doing so, stand upright according to the height of this drain pipe.
It drilled around the tube, to connect the discharge pipe and drilled an inlet to an arbitrary height position of the side surface portion of the standpipe. Therefore, the drainage pipes that are buried at various depths after the public basin is installed are simply connected to the public basin without adjusting the height position using a basin or the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for constructing a public slab of the present invention will be described below with reference to the drawings.

First, piping from the sewer main to the public basin,
The installation work will be explained.

In FIG. 2, reference numeral 21 denotes a sewer main that is buried deep underground. An inlet is formed above the side of the sewer main 21, and the downstream side of a mounting pipe 24 that is installed at an incline. Connect to the inlet. And on the upstream side of this mounting pipe 24,
If necessary, a pipe joint 25 or a pipe joint 28 is further connected via a universal pipe joint, and a pipe joint 28 having an O-ring 27 or the like as needed on the upstream side of the pipe pipe 26, or a universal pipe joint. The outlet 32 of the public basin 31 is connected via.

As shown in FIGS. 2 and 3, the public stub 31 is composed of a curved pipe 33 that is open upward and downward, and an upright pipe 35 that is connected to the upper opening of the curved pipe 33. There is.

The curved pipe 33 is integrally formed of synthetic resin such as polyvinyl chloride, and
For example, it is bent about 75 degrees according to the gradient of 26.
The opening on the lower side of the curved pipe 33, which is the outlet 32 of the public container 31, is a spigot, and is fitted and connected to the upstream side of the mounting pipe 26 via a pipe joint 28, and the upper opening is formed. An enlarged diameter portion 38 is formed in the vicinity as a receiving port, and the lower opening portion of the upright pipe 35 is fitted and connected to the enlarged diameter portion 38. Further, an annular groove 39 is formed on the inner peripheral surface of the expanded portion 38, and an elastic ring 40 such as a rubber ring is fitted in the annular groove 39 and the upper end of the expanded portion 38. The diameter of the lower portion is further expanded than that of the portion, and the upright pipe 35 that is fitted and connected is slightly oscillated in the horizontal direction.

The outlet 36 of the curved pipe 33 and the mounting pipe 26
By using a universal pipe joint whose angle can be freely adjusted as necessary for the connection portion with and, it becomes easier to adjust the angle at the installation site.

The upright pipe 35 is a pipe integrally molded of synthetic resin such as polyvinyl chloride, and the lower opening is fitted and connected to the enlarged diameter portion 38 of the curved pipe 33.
A lid 43 is adhesively fixed and closed in the upper opening.

Then, the public sill 31 and the like are buried in this state, and as shown in FIG. 2, the piping and installation work from the sewer main 21 to the public sill 31 is completed.

Next, with reference to FIG. 1 and FIG. 3, a work process in which a house or the like is built in each residential area and the drain pipe 51 of each house is connected to the public basin 31 will be described.

First, the drainage pipe installed up to the vicinity of the public basin 31
The periphery of the upright pipe 35 is excavated in accordance with the depth position of 51 to expose the side surface portion of the upright pipe 35.

A substantially circular inflow port 53 is bored in the side surface of the upright pipe 35 with a hole saw or the like in accordance with the position of the drainage pipe 51.

Then, the drainage pipe 51 is connected and fixed to the inflow port 53 via the joint device 55.

As shown in FIG. 3, the joint device 55 includes a substantially cylindrical joint body 56 fitted into the inflow port 53, and an annular packing body made of elastic rubber or the like fitted around the outer periphery of the joint body 56. 57, an annular spacer 58 fitted to the outer periphery of the joint body 56, one side surface of which is recessed into a curved surface so as to be in close contact with the side surface portion of the upright tube 35, and the other side surface of which is formed into a planar shape, and a plurality of gripping portions. 59a is composed of a nut 59 protruding from the outer circumference.

From the inner end of the outer peripheral surface at one end of the joint main body 56, a curved flange portion 61 corresponding to the inner peripheral surface of the upright pipe 35 is provided in an annular shape so as to project. A thread groove 62 is formed near the outer end of the outer peripheral surface.
The inner peripheral surface of the joint body 56 has a shape that can be fitted to the outer peripheral surface of the drainage pipe 51, and a locking step portion 64 for locking the drainage pipe 51 is provided near the inner end of the drainage pipe 51. The protrusion is formed to have a size substantially the same as the thickness.

The upper surface of the engaging step portion 64 to the flange portion 61 is formed in a curved shape so as to be smoothly continuous from the inner peripheral surface of the drainage pipe 51, and the flange of the joint body 56 is formed. A lower portion of the inner peripheral surface of the portion 61 is provided so as to project toward the inner end side and an extending portion 67 is formed.

When mounting the joint device 55, first, the joint body 56 fitted with the packing body 57 is
Fit into the inflow port 53 from the inside of the upright pipe 35. Then, with the flange portion 61 in contact with the inner peripheral surface of the upright tube 35 via the packing body 57, the spacer 58 is fitted to the joint body 56 from the outside of the upright tube 35 with the curved surface facing the upright tube 35. Then, the nut 59 is screwed into the thread groove 62. Then, by rotating and tightening the nut 59 using the grip portion 59a, the flange portion 61 and the nut 59 hold the packing body 57, the peripheral portion of the inflow port 53 of the upright pipe 35, and the spacer 58. The joint device 55 is fixed to the inflow port 53.

Instead of forming the thread groove 62 in the joint body 56 and using the nut 59 screwed into the thread groove 62, as shown in FIG.
As shown in FIG. 5 and FIG. 5, a plurality of engaging protrusions 68 are formed on the joint body 56, and engaging nuts 69 that engage with the engaging protrusions 68 are formed.
Can also be used.

The engaging projections 68 are aligned in the circumferential direction, each having a substantially rectangular parallelepiped shape, and the engaging nuts 68 are formed.
A front surface 68a facing 69 is formed to be inclined.

The engaging nut 69 is made of, for example, a synthetic resin such as polyvinyl chloride, and has an annular engaging nut body 69a and a plurality of grip portions projecting from the outer peripheral surface of the engaging nut body 69a. 69b and a plurality of engaging ridges 70 protruding from the inner peripheral surface of the engaging nut body 69a are integrally formed. The engaging ridges 70 are inclined in the same direction and aligned in the circumferential direction. Further, in each of the engagement protrusions 70, a locking step portion 70a, a guide inclined edge 70b inclined in the outer end side direction and the inner peripheral direction, and a vertical portion 70c are continuously formed on the surface facing the joint body 56, A cutout portion 70d, an engaging projection edge 70e slightly inclined toward the outer end side, and a locking portion 70f are continuously formed on the opposite surface.

When the joint device 55 is attached, first, the joint body 56 fitted with the packing body 57 is
Fit into the inflow port 53 from the inside of the upright pipe 35. Then, with the flange portion 61 in contact with the inner peripheral surface of the upright tube 35 via the packing body 57, the spacer 58 is fitted to the joint body 56 from the outside of the upright tube 35 with the curved surface facing the upright tube 35. Then, the engagement nut 69 is fitted into the joint body 56. Then, with the front surface 68a of each engaging projection 68 in contact with the guide inclined edge 70b of each engaging protrusion 70, the engaging nut 69 is rotated by using the gripping portion 69b, whereby each engaging nut 69 is rotated. The mating protrusions 68 are the guide slanted edges 70b
Finally, the rear surface 68b of each engaging projection 68 engages with the slightly inclined engaging projection edge 70e, and the flange 61 and the engaging nut main body 69a form the packing body 57 and the upright pipe. The joint device 55 can be fixed to the inflow port 53 by sandwiching the peripheral portion of the inflow port 53 of 35 and the spacer 58.

By using the engaging nut 69 or the like, the joint main body 56 can be more easily fixed to the upright pipe 35 by only slightly rotating the engaging nut 69. In addition, since the engagement nut 69 or the engagement protrusion 68 is a combination of a larger structure than the thread groove 62, it is less susceptible to mud and sand grains, and more securely fixed at the installation site. can do.

A drainage pipe is provided on the inner peripheral surface of the joint body 56.
After fitting and fixing 51, the surroundings are backfilled with earth and sand, and as shown in FIG. 1, the process of connecting the drainage pipe 51 of each door to the public basin 31 is completed.

Thus, according to the method for constructing the public sill of this embodiment, the public stub 31 composed of the upright pipe 35 and the curved pipe 33 connected to the lower opening of the upright pipe 35 is used, Since the inflow port 53 can be drilled at an arbitrary depth position of the upright pipe 35 according to the position of the drainage pipe 51 and the drainage pipe 51 can be connected, it is buried at various depth positions after the public basin 31 is buried and installed. Drain pipe
The 51 can be simply and reliably connected to the public cell 31 without adjusting the height position using a cell or the like. In addition, when connecting the drainage pipe 51, fit the upright pipe to the depth position of the drainage pipe 51.
It suffices to dig around 35, and there is no need to dig around perimeter 31. Further, the expanded diameter portion 38 of the curved pipe 33 into which the lower opening portion of the upright pipe 35 fits is fitted with the elastic ring 40, and the diameter of the lower portion of the expanded diameter portion 38 is larger than the upper end portion thereof. Since the upright pipe 35 swings, the adjustment that can be placed on the installation site becomes easy. Therefore, installation work can be simplified, costs can be reduced, and work efficiency can be improved.

Further, a cell bottom member that constitutes the bottom of the public cell 31
Since the inner peripheral surface of the curved pipe 33, which is a curved surface, has an inclined curved surface, it is possible to prevent the running water falling from the drain pipe 51 from jumping up.

Further, since the inflow port 53 formed in the upright pipe 35 and the drainage pipe 51 are connected via the joint device 55, the strength of the connection portion can be improved and water leakage from the connection portion can be prevented. It is possible to make a reliable connection.

Further, a curved surface is formed from the locking step portion 64 of the joint device 55 to the upper portion of the flange portion 61 so as to be smoothly continuous from the inner peripheral surface of the drainage pipe 51 and the joint body 56. Since the lower portion of the inner peripheral surface of the flange portion 61 is formed so as to project toward the inner end side and the extending portion 67 is formed, it is not shown downward from the upper opening portion of the upright pipe 35 with the lid body 43 removed. When a flexible cleaning tool is inserted, the cleaning tool abuts on the extending portion 67 and bends, the cleaning tool can be easily inserted into the drain pipe 51, and the inside of the drain pipe 51 can be easily cleaned. .

The upright pipe 35 which constitutes the public basin 31 is
Since general resin pipes can be used, the cost can be reduced and the working cost can be improved.

It is to be noted that each connecting portion formed by fitting or the like can be more surely connected by applying and filling an adhesive or a bonding agent as needed.

Further, the upper opening of the curved pipe 33 is merely a receiving port, and a general and inexpensive curved pipe can be used.

In this embodiment, the joint device 55
Although the drainage pipe 51 is connected and fixed to the inflow port 53 via the, the joint device 71 shown in FIG. 6, the joint body 72 shown in FIG. 7, or the packing body 73 shown in FIG. 8 can be used.

As shown in FIG. 6, this joint device 71 has a saddle portion 75 in which a connection port 74 corresponding to the inflow port 53 is formed in a substantially central portion so as to be in close contact with the outer peripheral surface of the upright pipe 35. A cylindrical drainage pipe fitting portion 76 is integrally formed so as to project from the peripheral portion of the connection port 74 toward the outer end side. Also,
On the inner peripheral surface of the connection port 74, a locking step 77 for locking the drainage pipe 51.
And an inflow port fitting portion 78 that fits on the inner peripheral edge of the inflow port 53 is projected inward, and, similarly to the joint device 55, an extension portion 79 is also projected. ing. The upper end portion of the inflow port fitting portion 78 has a length dimension that does not project to the inside of the drain pipe 51, so that the cleaning tool can be inserted more easily.

On the inner surface of the saddle portion 75, a connection port 74
An annular groove 80 is formed so as to surround the groove, and an elastic ring 81 such as an O ring is fitted in the annular groove 80.

When mounting the joint device 71, an adhesive or a bonding agent is applied to the inner surface of the saddle portion 75, the inlet fitting portion 78 is fitted into the inlet 53, and the saddle portion 75 is attached.
With the inner surface of the upright pipe and the outer peripheral surface of the upright pipe 35 in close contact with each other, the outer surface of the saddle portion 75 and the outer peripheral surface of the upright pipe 35 are integrally fastened with a wire 83 or the like, and the joint device 71 is upright. Attach to pipe 35. Then, by fitting and connecting the drainage pipe 51 to the inner circumference of the drainage pipe fitting portion 76, the inflow port 53 of the upright pipe 35 and the drainage pipe 51 can be connected.

Further, as shown in FIG. 7, the joint body 72 has a saddle portion 85 having a shape in which it is in close contact with the outer peripheral surface of the upright pipe 35 and a connection port 84 corresponding to the inflow port 53 is formed in the substantially central portion. A cylindrical portion 86 protruding from the peripheral portion of the connection port 84 toward the outer end side, and a drain pipe fitting portion 87 provided with an enlarged diameter at the tip end of the cylindrical portion 86 are integrally formed. ing.

When mounting the joint body 72, an adhesive or a bonding agent is applied to the inner surface of the saddle portion 85, and the saddle portion 85 with the inflow port 53 and the connection port 84 aligned with each other.
The inner surface of the upright pipe and the outer peripheral surface of the upright pipe 35 are closely contacted, and the outer surface of the saddle portion 85 and the outer peripheral surface of the upright pipe 35 are integrally fastened with a wire (not shown) to form the joint body 72. Attach to 35. Then, by fitting and connecting the drainage pipe 51 to the inner circumference of the drainage pipe fitting portion 87, the inflow port 53 of the upright pipe 35 and the drainage pipe 51 can be connected.

Further, as shown in FIG. 8, the packing body 73 is formed of elastic rubber in a ring shape, and the outer periphery thereof is
An annular groove 91 is formed which is fitted to the peripheral portion of the inflow port 53 of the upright pipe 35. Further, the inner peripheral surface 92 of the packing body 73 is formed in a wide flat shape, and the fitted drain pipe 51 is inserted.
It is designed to securely hold.

Then, these joint device 71, joint body 7
2 or the packing body 73 can be attached by the work from the outside of the upright pipe 35, so that the installation work is easy, and is particularly effective when the diameter of the upright pipe 35 is small and the work from the inside is difficult. become.

[0047]

According to the construction method of the public Masuichi of the present invention, 桝底portion connected to the lower opening of the standpipe and the standpipe
A public basin made of wood is used, and after this public basin has been installed underground, drainage pipes can be connected by drilling an inflow port at an arbitrary height on the side of the upright pipe. The drain pipe buried in the position can be easily and surely connected to the public basin without adjusting the height position using a pit or the like. In addition, when connecting the drainage pipe, it is sufficient to drill the periphery of the upright pipe in accordance with the height position of the drainage pipe, and it is not necessary to drill the entire periphery of the public basin. Therefore, installation work can be simplified, costs can be reduced, and work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an example of construction by a construction method of a public basin according to the present invention.

[Fig. 2] Fig. 2 is a work process diagram showing an example of construction of the above-mentioned public basin.

FIG. 3 is a vertical sectional view showing an embodiment of the drainage basin and the joint device of the above.

FIG. 4 is a vertical sectional view showing another embodiment of the above joint device.

FIG. 5 is an exploded view with a part cut away showing the joint device of the same.

FIG. 6 is a vertical sectional view of a joint device showing another embodiment of the present invention .

FIG. 7 is a sectional view of a joint body showing another embodiment of the present invention .

FIG. 8 is a vertical cross-sectional view of a packing body showing another embodiment of the present invention .

FIG. 9 is a front view showing an example of construction by a conventional public mud construction method.

[Explanation of symbols]

21 Sewer mains 24, 26 Mounting pipes 31 Public pipes 32 Outflow ports 33 Curved pipes as wall bottom members 35 Upright pipes 43 Lids 51 Drain pipes 53 Inflow ports

Claims (1)

[Claims] 1. A downstream and facilities coating method public basins in which the upstream side of the mounting tube is connected to be connected to the sewer main pipe of the drain pipe, the lower opening of the standpipe and the upright tube having an opening in the vertical Upstream of the mounting pipe connected to the sewer main by forming a public basin with a basin member connected to the section and having a curved inner surface on the bottom , and closing the upper opening of the upright pipe with a lid. With the side connected to the outflow port which is the lower opening of the bottom wall member, the public basin is buried, and when the drain pipe is constructed, the periphery of the upright pipe is excavated and aligned with the position of the drain pipe. Optional on the side of the upright tube
A method for constructing a public basin, characterized in that an inflow port is bored at the position, and the drain pipe is connected to this inflow port.