JPH1172180A - Inflow pipe connecting method of vertical pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inflow pipe connecting method of a vertical pipe by which inflow pipes can be accurately connected to the vertical pipe in an originally connecting position. SOLUTION: In an inflow pipe connecting method of a vertical pipe, inflow pipes are connected to the vertical pipe where a spiral guide passage 12 is arranged in a straight pipe-shaped vertical pipe main body 10. The method has a process of connecting the inflow pipes 20 and 30 to connecting holes 43 and 44 by boring the connecting holes 43 and 44 along ruled plotting lines 41 and 42 by drawing the ruled plotting lines 41 and 42 on its outer peripheral surface in an upper part of the vertical pipe according to an inflow pipe connecting hole position at an execution work site.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a vertical pipe to an inflow pipe suitable for use in a vertical sewer pipe of a natural flow type.

[0002]

2. Description of the Related Art Conventionally, as described in, for example, Japanese Utility Model Laid-Open Publication No. 4-53842, the upper end of a vertical pipe is connected to one end of an inflow pipe protruding into a manhole from a side wall of the manhole via a bent pipe. It is known that the lower end of the vertical pipe is installed at the bottom in the manhole, and the sewage flowing into the manhole by the inflow pipe is introduced into the bottom of the manhole by the vertical pipe.

However, when the vertical pipe provided in the manhole is long as described above, the bottom of the manhole may be damaged due to a large impact of sewage flowing out from the lower end of the vertical pipe.

Accordingly, for example, as shown in FIG. 9 of JP-A-8-41915, as shown in FIG. 9, a bent downflow path spirally formed from the upper end to the lower end along the inner surface of the vertical pipe main body a is provided. Vertical pipes for sewage have been proposed. A cruciform joint b is connected to the upper end of the vertical pipe for sewerage, and one end of an inflow pipe d introduced into the manhole c is connected via the cruciform joint b. It is designed to be introduced into the vertical pipe for sewerage via the joint b.

[0005] However, in many cases, a plurality of inflow pipes are introduced into the vertical sewage pipe so as to have a height difference.
In addition, since the introduction direction and the height difference of the inflow pipe are different for each construction site, in the above-mentioned conventional vertical pipe for sewage, a plurality of inflow pipes should be accurately positioned at the position where they should be connected, and However, there is a problem that connection cannot be made well so as not to cause a problem.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to accurately connect an inflow pipe to a vertical pipe at a position where it should be originally connected. It is an object of the present invention to provide a method for connecting a vertical pipe to an inflow pipe.

[0007]

The invention according to claim 1 of the present application (the present invention 1) provides a vertical pipe in which an inflow pipe is connected to a vertical pipe provided with a spiral guide path in a straight vertical pipe main body. In the connection method of the inflow pipe, at the construction site, draw a ruled line on the outer peripheral surface in accordance with the position of the hole to be connected to the inflow pipe at the top of the vertical pipe, and drill a connection hole along the ruled line, A method for connecting a vertical pipe to an inflow pipe, the method comprising connecting an inflow pipe to a connection hole.

The invention according to claim 2 of the present application (Invention 2)
Is a vertical pipe inflow pipe connection method of connecting an inflow pipe to a vertical pipe provided with a spiral guideway in a straight pipe vertical pipe main body, and at a construction site, an inflow pipe is provided at an upper part of the vertical pipe. A method for connecting a vertical pipe to an inflow pipe, comprising the steps of drilling a connection hole in accordance with the position of the hole to be connected, and connecting the inflow pipe to the connection hole via a joint consisting of a saddle section and a connection pipe section.

In the present invention, the height difference between the bottom of the uppermost inflow pipe and the bottom of the lowermost inflow pipe is preferably within 7 m. In the present invention, as the material of the vertical pipe main body, reinforced plastic mortar (hereinafter referred to as FRPM) or the like is preferable in terms of strength, rigidity, and the like. In addition, as the material of the air core tube and the spiral guide path, from the viewpoint of strength and workability,
Reinforced plastic (FRP) or the like is preferred. The material of the inflow pipe and outflow pipe is FRP from the viewpoint of strength and workability.
However, general-purpose plastics may be used.

[0010]

According to the method for connecting a vertical pipe to an inflow pipe according to the first aspect of the present invention, a ruled line is drawn on an outer peripheral surface of a vertical pipe at a construction site in accordance with a position of a hole to be connected to the inflow pipe, and is drawn along the ruled line. By connecting the inflow pipe to the connection hole by connecting the inflow pipe to the vertical pipe, the connection is made while adjusting the inflow pipe introduction direction and height difference at the construction site Therefore, the inflow pipe can be accurately connected to the position to which the inflow pipe should be connected with good workability.

According to a second aspect of the present invention, there is provided a method of connecting a vertical pipe to an inflow pipe at a construction site, wherein a connection hole is formed in an upper portion of the vertical pipe in accordance with a hole to be connected to the inflow pipe, and the connection hole is connected to a saddle portion. By having the step of connecting the inflow pipe via the joint consisting of the pipe section, when connecting the inflow pipe to the vertical pipe, it is possible to connect while adjusting the introduction direction and height difference of the inflow pipe at the construction site The inflow pipe can be connected to the position where it should be connected accurately and with good workability, and since the bonding area between the saddle portion of the joint and the peripheral wall of the connection hole of the vertical pipe is large, watertightness is ensured. be able to.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. An example of a method for connecting a vertical pipe to an inflow pipe according to the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes a vertical pipe, which comprises a vertical pipe main body 11, an air core tube 13, and spiral guide paths 12, 12 '.

At the upper end of the vertical pipe main body 11, a receiving port 111 for connection pipe connection is provided. An air core cylinder 13 made of FRP and having a hollow inside is provided upright at an upper portion in the vertical pipe main body 11 at a substantially central portion. Between the inner peripheral surface of the vertical pipe main body 11, and the outer peripheral surface of the air core tube 13 (figure L ₁ section)
In addition, a first spiral guide path 12 made of FRP is provided. The inner peripheral surface of the spiral guide path 12 is integrally attached to the outer peripheral surface of the air core tube 13.

As shown in FIG. 2, a belt-like elastic body 14 made of rubber, for example, is integrally bonded to the outer peripheral edge of the spiral guide path 12 over its entire length by an adhesive. The elastic body 14 supports the spiral guide path 12 in the vertical pipe main body 11 by being pressed against the inner peripheral surface of the vertical pipe main body 11.

An outflow pipe 15 is connected to the lower end of the vertical pipe main body 11. An FRP is provided inside the vertical pipe main body 11 slightly above the top of the outflow pipe 15 (section LT _{3 in the} figure). A second spiral guideway 12 'is provided. An elastic body similar to the above is integrally bonded to the outer peripheral edge of the second spiral guide path 12 'with an adhesive. Second spiral guideway 1
2 'is not attached to the air core tube 13. No spiral guide path is provided between the first spiral guide path 12 and the second spiral guide path 12 ′ (section L _{2 in the} figure) inside the vertical pipe main body 11.

As described above, the first spiral guide path 12 and the second spiral guide path 12
The first spiral guide path 12 and the second spiral guide path 12 'are provided at appropriate intervals.
By appropriately selecting the pitch of the spiral, the speed of the sewage flowing down the inside of the vertical pipe main body 11 in a spiral manner is appropriately adjusted according to the length of the vertical pipe main body 11 and the height difference of the plurality of inflow pipes. However, the first spiral guideway 12
May be disposed up to the lower end of the vertical pipe main body 11.

As shown in FIG. 5, the vertical pipe 10 is vertically disposed in a manhole 70 as a vertical pipe for sewage.
The manhole 70 is provided with an upper inlet 71 and a lower inlet 72 at an upper part, and an outlet 73 at a lower part.

Reference numeral 40 denotes a receiving port 11 at the upper end of the vertical pipe main body 11.
1 is a connecting pipe that is connected to stand substantially upright. FIG.
As shown in (1), a rubber ring 45 is attached to the outer peripheral surface of the lower end of the connection pipe 40. First, as the first step,
As shown in FIG. 4A, a connecting pipe 40 is temporarily attached to a receiving port 111 at an upper end of the vertical pipe main body 11, and a ruled line 42 is provided at a position where the lower inflow pipe 30 and the upper inflow pipe 20 are to be connected. Draw 41. The connection pipe 40 is removed and cut out along a scribe line 42, 41 using a diamond cutter or the like to open a lower inflow pipe connection hole 44 and an upper inflow pipe connection port 43.

Next, as a second step, as shown in FIG. 4B, the connecting pipe 40 is connected to the receiving port 111 at the upper end of the vertical pipe main body 11 so as to be substantially upright. Further, as a third step and a final step, as shown in FIGS. 4C and 5, the lower part introduced through the lower inlet 72 of the manhole 70 into the lower inlet pipe connection hole 44 of the connection pipe 40. The inflow pipe 30 is connected via a joint 60. Next, the manhole 7 is inserted into the connection hole 43 for the upper inflow pipe of the connection pipe 40.
Upper inlet pipe 20 introduced through the upper inlet 71
Are connected via a joint 50.

The sewage entering the manhole 70 flows into the vertical pipe main body 11 from the upper inflow pipe 20 and the lower inflow pipe 30, and spirals in the L ₁ section along the first spiral guide path 12. after flowing down the inside L ₂ segment helical maintaining flow down by the inertia force, it flows down spirally along again L _three sections second spiral guideways 12 '. The sewage is in a state of being attenuated while flowing down spirally, and therefore, there is no possibility that a strong impact is applied to the bottom of the manhole 70 by the sewage flowing down,
The water is discharged from the outflow pipe 15 to the culvert pipe via the outflow port 73 of the manhole 70.

FIG. 6 is an explanatory view of another example of a method for connecting a vertical pipe to an inflow pipe according to the present invention. In this example, the connecting pipe 8
As 0, one having a branch portion 81 at the connection position of the lower inflow pipe 30 is used.

First, as a first step, as shown in FIG. 6A, a connecting pipe 80 is connected to a receiving port 111 at an upper end of a vertical pipe main body 11 so that a branch portion 81 matches a lower inflow pipe 30. A temporary attachment is made, and a ruled line 82 is drawn at a position where the upper inflow pipe 20 is to be connected. The connection pipe 80 is removed, cut out along a scribe line 82 using a diamond cutter or the like, and a connection port 83 for the upper inflow pipe is opened.

Next, as a second step, as shown in FIG. 6B, the connecting pipe 80 is connected to the receiving port 111 at the upper end of the vertical pipe main body 11 so as to be substantially upright. Further, as a third step, as shown in FIG. 6C, the lower inflow pipe 30 introduced through the lower inflow port of the manhole is connected to the branch portion 81 of the connection pipe 80. Next, the connection pipe 80
The upper inflow pipe 20 introduced through the upper inflow port of the manhole is connected to the upper inflow pipe connection hole 83 via the joint 90.

FIG. 8 is an explanatory view of still another example of the method of connecting a vertical pipe to an inflow pipe according to the present invention. In this example, the joint 100 shown in FIG. 7 is used. The joint 100 includes a connection pipe 101 connected to the inflow pipe, and a saddle 102 having an opening communicating with a hollow portion of the connection pipe 101.

First, as a first step, as shown in FIG. 8A, a connection in which a connection hole 43 for the upper inflow pipe and a connection hole 44 for the lower inflow pipe are opened in the receiving port 111 at the upper end of the vertical pipe main body 11. The connection pipe 40 is connected so as to be substantially upright.

Next, as a second step, as shown in FIG. 8 (b), a joint 100 is provided on the outer peripheral surface of the peripheral wall of the connection hole 43 for the upper inflow pipe of the connecting pipe 40, and the inner peripheral surface of the saddle portion 102 thereof. And a watertight connection in a state where the bonding area is large, and a joint 100 ′ is provided on the outer peripheral surface of the peripheral wall of the connecting hole 44 for the lower inflow pipe of the connecting pipe 40 with the inner peripheral surface of the saddle portion 102 ′. And water-tightly connected in a state where the bonding area is large.

Further, as a third step, as shown in FIG. 8C, the upper inlet pipe 20 introduced through the upper inlet of the manhole is connected to the connecting pipe part 101 of the joint 100,
The lower inlet pipe 30 introduced through the lower inlet of the manhole is connected to the connecting pipe part 101 'of the joint 100'.

[0028]

As described above, the method for connecting an inflow pipe to a vertical pipe according to the first aspect of the present invention is described in detail. Therefore, when connecting an inflow pipe to a vertical pipe, the inflow pipe must be accurately and precisely positioned where it should be connected. Connection can be made with good workability.

[0029] The method for connecting the inflow pipe of the vertical pipe according to the second aspect of the present invention is as described above. Therefore, when connecting the inflow pipe to the vertical pipe, the inflow pipe is accurately and precisely placed at the position where the inflow pipe should be connected. Connection can be made well, and watertightness can be ensured.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating an example of a vertical pipe used in the present invention.

FIG. 2 is a front view showing a state where an elastic body is attached to the entire length of a spiral guide path used for the vertical pipe shown in FIG. 1;

FIG. 3 is a cross-sectional view illustrating an example of a connection pipe used in FIG.

4A and 4B are explanatory views of steps of an example of a method for connecting a vertical pipe to an inflow pipe according to the present invention, wherein FIG. 4A is a partial cross-sectional view illustrating a first step, and FIG. (C)
FIG. 9 is a partial cross-sectional view illustrating a third step.

FIG. 5 is a partial cross-sectional view illustrating a final step of an example of the method for connecting an inflow pipe of a vertical pipe according to the present invention.

FIGS. 6A and 6B are explanatory views of steps of another example of the vertical pipe inflow pipe connection method of the present invention, wherein FIG. 6A is a partial cross-sectional view illustrating a first step, and FIG. A partial cross-sectional view explaining the
(C) is a partial cross-sectional view for explaining the third step.

FIG. 7 is a sectional view illustrating an example of a joint used in the present invention.

FIGS. 8A and 8B are explanatory views of steps of another example of the method for connecting the inlet pipe of the vertical pipe according to the present invention, wherein FIG. 8A is a partial cross-sectional view illustrating the first step, and FIG. A partial cross-sectional view explaining the
(C) is a partial cross-sectional view for explaining the third step.

FIG. 9 is a sectional view showing an example of a conventional vertical pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vertical pipe 11 Vertical pipe main body 12, 12 'Spiral guideway 13 Air core tube 14 Elastic body 15 Outflow pipe 20 Upper inflow pipe 30 Lower inflow pipe 40, 80, Connection pipe 50, 60, 90 Joint 41, 42, 82 Ruled lines 43, 44, 83 Connection holes 100, 100 'Joints 101, 101' Connection pipes 102, 102 'Saddle

Continued on the front page (51) Int.Cl. ⁶ Identification code FI F16L 55/00 F16L 55/00 G

Claims (2)

[Claims] 1. A method for connecting an inflow pipe to a vertical pipe provided with a spiral guide path in a straight pipe vertical pipe main body, the method comprising the steps of: A vertical pipe having a step of drawing a ruled line on an outer peripheral surface thereof in accordance with a position of a hole to be connected to the inflow pipe, making a connection hole along the ruled line, and connecting the inflow pipe to the connection hole. Inflow pipe connection method. 2. A method for connecting an inflow pipe to a vertical pipe provided with a spiral guide path in a straight pipe main body, the method comprising the steps of: A step of forming a connection hole in accordance with a position of a hole to be connected to the inflow pipe, and connecting the inflow pipe to the connection hole via a joint consisting of a saddle part and a connection pipe part. Pipe connection method.