JPH09195368A - Vinyl chloride resin manhole for pipe with vinyl chloride resin rib and method of joining pipe with vinyl chloride resin rib and vinyl chloride resin manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce costs by forming ribs on vinyl chloride resin manhole used for pipes with no ribs, allowing different diameters to be substantially in conformity to one another, and joining a vinyl chloride resin pipe with ribs to a vinyl chloride resin manhole. SOLUTION: A manhole 11 is constituted of a cleaning port 12 connected to a manhole, a spigot 13 directed to the downstream direction of a sewer, a socket expanded part 14 arranged in the upstream direction, and a leg part 15. Prepared in its straight pipe part by a reaction injection molding on the spigot 13 is a thermosetting resin member 136 having ribs 131 molded along the circumferential direction. The spigot 13 is also prepared likewise with a second thermosetting resin member 137. In molding, the socket 14 and spigot 13 are used to be an inner mold, and a socket 14 or spigot 13 covering matters are used to be an outer mold. Employing norhornene monomer through ring-opening-polymerization leads to low density and easy reaction injection molding so that good adhesiveness can be achieved relative to the straight pipe part. A rubber ring 133 is mounted between thermosetting resin members 136, 137, and the socket expanded part of the pipe with ribs is fitted thereover to cover them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride resin manhole for a ribbed pipe made of vinyl chloride resin for utilizing a manhole connecting straight pipes to join a ribbed pipe, and a joining method thereof. In particular, the present invention is a vinyl chloride resin ribbed pipe vinyl chloride resin for use in joining a ribless pipe made of vinyl chloride resin to a resin manhole for vinyl chloride resin pipes that is normally used for sewer pipes. The present invention relates to a manhole and a method of joining the manhole.

[0002]

2. Description of the Related Art In recent years, a vinyl chloride resin ribbed pipe having a large flatness and capable of being deeply buried has been developed and used in place of a normal ribless vinyl chloride resin pipe. FIG. 8 and FIG. 9 are views for explaining a method of connecting a concrete manhole and a vinyl chloride resin ribbed pipe in a conventional example. In FIG. 8, the outflow side manhole 81 is provided with a rib pipe downstream manhole 82,
The rib tube 83 is connected. Since the rib pipe downstream manhole 82 has ribs, it is attached by the non-shrink fast mortar 84 and the bonding agent 85. Further, the outflow-side manhole 81 is provided so as not to sink on the crushed base stone 86 and the base member 87.

In FIG. 9, an inflow side manhole 81 'is provided.
Have the same shape as the outflow side manhole 81 and are given the same numbers. The difference lies in the shapes of the rib pipe downstream manhole 82 'and the rib pipe upstream manhole 82'. That is, the rib pipe upstream manhole 82 '
Is that it is provided with a receiving port expanded portion 89 into which the straight pipe portion is inserted. For example, the sewage as described above flows from the outflow-side manhole 81 in the direction of the arrow and flows into the inflow-side manhole 81 'from the rib pipe 83' through the plurality of rib pipes.

FIG. 10 is a view for explaining a vinyl chloride resin manhole for joining a normal ribless resin pipe. In FIG. 10, a vinyl chloride resin manhole 101 is composed of a receiving port expanded portion 102 into which sewage flows, an outlet 103 from which the sewage flows, a cleaning port 104, and a leg portion 105 which is a stabilizing portion. The vinyl chloride resin manhole 101 is formed by injection molding. For example, a straight pipe portion of vinyl chloride is inserted into the expanded diameter receiving port 102, and the expanded diameter receiving port 102 is joined so as to cover the straight pipe portion. Then, the sewage flows from the right side to the left side in FIG. 10. At this time, in the vinyl chloride resin manhole 101, a rubber ring mounting groove 106 is formed on the side of the receiving port 102. By inserting a rubber ring between the manhole 101 and the straight pipe portion side, the sewage is sealed. Has become.

Also, the vinyl chloride resin manhole 1
01 is for a straight line, but there is a bend for changing the flowing direction of sewage. Angles of bending vinyl chloride resin manholes are 15 °, 30 °, 45 °, 60 °, 75 °, 9
There is 0 °. These bending vinyl chloride resin manholes have a right bend and a left bend. Since the vinyl chloride resin manhole 101 needs to have the receiving port on the upstream side and the outlet on the downstream side, it cannot be used with the right bend and the left bend reversed. Further, the vinyl chloride resin manhole has a confluence type in which a plurality of sewers merge. Further, some vinyl chloride resin manholes have different inner diameters. The type of inner diameter is from 150 mm to 25
There is up to 0 mm.

[0006]

The vinyl chloride resin manhole 101 is characterized in that it has many types and a large shape. The mold for manufacturing the large-sized vinyl chloride resin manhole 101 is an expensive one that costs as much as 10 million yen. Furthermore, the rib tube developed in recent years,
It has a large flatness and can be deeply buried. However, the same number of vinyl chloride resin manholes for rib tubes must be prepared. In particular, a vinyl chloride resin manhole for a rib tube is expensive because the rib portion projects in the outer diameter direction, and the size of the vinyl chloride resin manhole increases.

Therefore, as shown in FIG. 8, the rib tube can be manufactured as shown in FIG. 8 without manufacturing a dedicated vinyl chloride resin manhole.
A non-shrinking quick-hardening mortar 84 or a bonding agent 85 is used, or a conversion joint for a pipe with or without ribs is prepared. However, the conversion joint is expensive because it is manufactured by processing.

The present invention has been made to solve the above problems, and by forming ribs on a vinyl chloride resin manhole used for a ribless tube and making the different diameters substantially the same, a vinyl chloride resin is formed. It is an object to provide a vinyl chloride resin manhole for joining rib-made pipes and a joining method thereof. An object of the present invention is to provide an inexpensive vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib and a joining method thereof by using a part of the vinyl chloride resin manhole as a mold.

[0009]

[Means for Solving the Problems]

(First Invention) In order to achieve the above-mentioned object, a vinyl chloride resin manhole for a vinyl chloride resin ribbed pipe of the present invention has an inner diameter of a vinyl chloride resin ribbed pipe receiving port expanded portion,
A pipe with ribs made of vinyl chloride resin, which has a different outer diameter from the straight pipe portion on the outlet side of the vinyl chloride resin manhole, is joined to the straight pipe portion on the outlet port 13 side of the vinyl chloride resin manhole 11. A rib is formed by a resin member that is in close contact with the outer peripheral surface of the straight pipe portion of the vinyl resin manhole 11 on the side of the outlet 13 and that has excellent rigidity and impact resistance, and that also has low absorbency, heat resistance, and thermosetting property. The first resin member 136 in which is formed, and the vinyl chloride resin manhole 1
On the side of the insertion port 13 of No. 1, the second resin member is made of the same material as that of the first resin member 136, and is arranged on the cleaning port side of the vinyl chloride resin manhole 11 side with a space between them to form a rib. It is characterized in that it has an opening part provided with a resin member 137 and a rubber ring 133 provided between the first resin member 136 and the second resin member 137 having the ribs.

(Second Invention) The first resin member 136 and the second resin member 137 in the vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to the present invention are the same as the insertion port 13 side of the vinyl chloride resin manhole 11. It is characterized in that the straight pipe portion is engaged by concave portions or convex portions 31 and 32 provided on the outer peripheral surface thereof.

(Third Invention) The first resin member 136 and the second resin member 137 in the vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to the present invention are integrally formed, and between the ribs. Rubber ring 13 in the groove
3 is provided.

(Fourth invention) A vinyl chloride resin manhole for a rib pipe made of a vinyl chloride resin of the present invention is provided with an outer diameter of a straight pipe insertion portion of a rib pipe made of a vinyl chloride resin and a manhole made of a vinyl chloride resin. A vinyl chloride resin ribbed tube having a different inner diameter from the expanded diameter portion is joined to a vinyl chloride resin manhole, and at least a rubber ring mounting groove is provided from the tip of the expanded diameter portion of the vinyl chloride resin manhole 11. It is adhered to the outer peripheral surface of the receiving port expanding portion 14 that has been cut to the area of 4 and expanded in diameter, and is excellent in rigidity and impact resistance, and also has low absorbency and heat resistance. , And a third resin member 148 in which a reinforcing layer is formed of a thermosetting resin member, and a receiving port expanded portion.

(Fifth Invention) The first to third resin members 136, 137 and 148 in the vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to the present invention are provided around the cleaning port 12 of the vinyl chloride resin manhole 11. It is characterized by covering the whole except for.

(Sixth Invention) The first to third resin members 136, 137, 148 in the vinyl chloride resin manhole for a vinyl chloride resin ribbed pipe of the present invention.
Is a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst.

(Seventh Invention) In the vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to the present invention, the third resin member 148 is provided with a rib.

(Eighth Invention) A method for joining a vinyl chloride resin ribbed pipe and a vinyl chloride resin manhole according to the present invention includes: an inner diameter of a vinyl chloride resin ribbed pipe receiving port enlarged portion;
When connecting a vinyl chloride resin ribbed pipe with a vinyl chloride resin manhole having a different outer diameter to the outlet side straight pipe part, it consists of the vinyl chloride resin manhole outlet side straight pipe part By the inner mold and the resin member that is adhered to the outer peripheral surface of the vinyl chloride resin manhole outlet side straight pipe part, which has excellent rigidity and impact resistance, and also has low absorbency, heat resistance, and thermosetting property. A step of providing an outer mold for forming ribs, and injection molding the resin member between the inner mold and the outer mold for reaction injection molding,
A step of closely adhering a thermosetting resin member having a rib to the outlet side straight pipe portion by the reaction heat and thermosetting shrinkage;
It is characterized in that it comprises a step of attaching a rubber ring between the ribs and a step of fitting an expanded diameter portion of the receiving port of the rib tube made of vinyl chloride resin on the outer circumferences of the rib and the rubber ring.

(Ninth Invention) A method for joining a vinyl chloride resin ribbed pipe and a vinyl chloride resin manhole of the present invention is as follows. A pipe with ribs made of vinyl chloride resin, which has a different inner diameter at the expanded diameter portion of the receiving port of the resin manhole,
In joining with a vinyl chloride resin manhole, cutting from the tip of the vinyl chloride resin manhole inlet expanded portion to at least the rubber ring mounting groove portion, and the vinyl chloride resin manhole inlet expanded portion A step of performing a diameter expansion process, an inner die composed of the expanded diameter expanded mouth portion, and an outer peripheral surface of the expanded diameter mouth portion, which are excellent in rigidity and impact resistance, and have low A step of providing an outer mold for forming a reinforcing layer with a resin member having absorbency, heat resistance, and thermosetting property; and injection molding the resin member by injecting the resin member between the inner mold and the outer mold. Along with the step of bringing a thermosetting resin member into close contact with the expanded diameter portion of the receiving opening by the reaction heat and thermosetting shrinkage, and a straight pipe portion on the inlet side of a ribbed pipe made of vinyl chloride resin in the expanded diameter portion of the receiving opening. And a step of inserting.

(Tenth Invention) In the method for joining a vinyl chloride resin ribbed tube and a vinyl chloride resin manhole according to the present invention, the resin member which is reaction injection molded into the vinyl chloride resin manhole comprises a norbornene-based monomer and a metathesis catalyst. It is characterized by being a reaction injection molding material as a main material.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The applicant of the present invention has a resin member having excellent rigidity, impact resistance, low absorbency, heat resistance, and thermosetting property, such as a norbornene-based monomer and a metathesis catalyst as main materials. Resin member made of reaction injection molding material (Japanese Patent Publication No. 28451/1992, Japanese Patent Publication No.
No. 812, Japanese Patent Publication No. 6-13563, No. 6
-24806 and Japanese Unexamined Patent Publication No. 6-8273) have been developed in recent years. In addition, the applicant of the present invention does not manufacture a mold for a rib manhole, but uses a conventional vinyl chloride resin manhole itself as an inner mold and injects a reaction injection molding material between it and a newly prepared outer mold. I found that the rib manhole can be easily manufactured.

(First Invention) The first invention is, for example, when the inner diameter of the expanded diameter portion of the vinyl chloride resin ribbed tube and the outer diameter of the straight tube portion on the outlet side of the vinyl chloride resin manhole are different. It is the structure of the resin manhole. A straight resin portion on the outlet side of the resin manhole has a first resin member having excellent rigidity and impact resistance, low absorbency, heat resistance, and thermosetting, which is adhered to the outer peripheral surface thereof. Ribs made of the first resin member are formed. Further, the straight pipe portion of the resin manhole on the outlet side is made of the same material as that of the first resin member and is arranged on the cleaning port side with a space from the second resin member having ribs. ing.

The rubber ring has a first rib on which the rib is formed.
Is provided between the resin member and the second resin member, and serves as a sealing member between the later-described ribbed tube. The expanded diameter portion of the receiving port 3 of the ribbed tube is fitted on the outer peripheral surfaces of the first and second resin members and the rubber ring. The first invention is
With the first resin member and the second resin member, the difference in the radial direction of the pipe is filled, and a rubber ring is used for sealing. In addition, the first invention is strong in strength such as rigidity and impact resistance, and is excellent in all of low viscosity, thermosetting shrinkage, low absorbency after completion, and heat resistance, which improves processability when performing reaction injection molding. It is made of a resin member.

(Second Invention) In the second invention, a concave portion or a convex portion is provided on the outer peripheral surface of the straight pipe portion of the resin manhole on the outlet side. When the first resin member and the second resin member are formed on the outer peripheral surface of the straight pipe portion of the resin manhole, they are more firmly engaged by the concave portion or the convex portion.

(Third Invention) In the third invention, the first resin member and the second resin member are integrally formed on the outer peripheral surface of the straight pipe portion of the resin manhole on the outlet side. Also,
In the first resin member and the second resin member, the portion in contact with the outer peripheral surface of the straight pipe portion of the resin manhole constitutes a thin portion. The straight pipe portion on the outlet side of the resin manhole, the first resin member, and the second resin member are brought into closer contact with each other through the thin portion.

(Fourth invention) A fourth invention is, for example, for a resin ribbed pipe in which the outer diameter of the straight pipe portion of the vinyl chloride resin ribbed pipe and the inner diameter of the resin manhole receiving expanded portion are different. This is the structure of a resin manhole. At least the part of the groove for mounting the rubber ring is cut off in the expanded diameter portion of the receiving port of the resin manhole. In the expanded diameter portion of the receiving port, the outer peripheral surface and the tip portion are excellent in rigidity and impact resistance,
A third resin member having a reinforcing layer formed of a resin member having low absorbency, heat resistance, and thermosetting is closely attached. A straight pipe with a resin rib is fitted inside the receiving pipe. If the groove for mounting the rubber ring is left in the receiving port expanded diameter portion to some extent, the engagement with the third resin member is better, but if the expanded diameter portion is too short, Deteriorates the engagement.

(Fifth Invention) In the fifth invention, the resin member is not integrally molded on the outlet side and the expanded diameter portion of the receiving port, but the entire resin manhole except the cleaning port is integrally formed with the resin member. It is covered by a reinforcing layer.

(Sixth and Tenth Inventions) In the sixth and tenth inventions, the first resin member to the third resin member are made of a reaction injection molding material containing a norbornene monomer and a metathesis catalyst as main components. Become. A resin member made of a reaction injection molding material containing a norbornene-based monomer and a metathesis catalyst as main materials has excellent rigidity and impact resistance, and also has low absorbency, heat resistance, and thermosetting property.

(Seventh Invention) In the seventh invention, ribs are provided on the reinforcing layer made of the third resin member. The rib is necessary when the diameter of the manhole is large, but when the diameter is small, the reinforcing layer is sufficient.

(Eighth Invention) According to an eighth invention, there is provided a resin rib mandrel and a resin rib mandrel in which an inner diameter of a resin rib-equipped pipe expanded portion and an outer diameter of a resin manhole-side straight pipe are different from each other. Is a joining method for joining. The inlet side straight pipe portion of the resin manhole serves as an inner mold in the reaction injection molding. The outer mold, together with the inner mold, adheres to the outer peripheral surface of the inlet side straight pipe part of the resin manhole and is excellent in rigidity and impact resistance, and also has low absorbency, heat resistance, and thermosetting property. It is for forming ribs by members.

Then, the resin member is subjected to reaction injection molding between the inner mold and the outer mold. The resin member is brought into close contact with the straight pipe portion by the reaction heat generated during the reaction injection molding and the thermosetting shrinkage, and the rib is formed by the reaction injection molding. A rubber ring is attached between the first resin member and the second resin member on which the rib is formed. On the outer circumferences of the ribs and the rubber ring, the expanded-diameter receiving part of the expanded ribbed tube is fitted. The inner mold for reaction injection molding the first resin member and the second resin member is
Since it is a straight pipe portion on the outlet side of the manhole, it is not necessary to take it out after the reaction injection molding, and the cost is low. Further, unlike the inner mold, the outer mold only covers the first resin member and the second resin member having the ribs, and thus can be made into a simple structure by only dividing into two.

(Ninth Invention) A ninth invention is a resin-made ribbed pipe in which the outer diameter of the straight-tube portion of the resin-made ribbed pipe and the inner diameter of the resin manhole inlet expanded portion are different, and a resin-made manhole. This is a joining method for joining and. The expanded portion of the resin manhole cuts a part of the rubber ring mounting groove before forming the inner mold in the reaction injection molding. The expanded diameter portion can be cut by cutting the entire rubber ring mounting groove or by cutting a part of the expanded diameter portion. It should be noted that the cutting of the rubber ring mounting groove of the resin manhole and the diameter expansion of the receiving portion may be processed first.

The outer mold, together with the inner mold, is excellent in rigidity and impact resistance in close contact with the outer peripheral surface and the tip of the expanded portion of the resin manhole, and also has low absorbency, heat resistance, and thermosetting property. It is for forming the reinforcing layer by the resin member having. Then, the resin member is subjected to reaction injection molding between the inner mold and the outer mold. The resin member is brought into close contact with the expanded diameter portion by reaction heat generated during reaction injection molding and thermosetting shrinkage, and a rib is formed by reaction injection molding. A straight pipe portion on the outlet side is inserted inside the expanded diameter portion formed with the ribs, and is firmly sealed by a rubber ring provided on the outlet side.

[0032]

EXAMPLE FIG. 1 is a diagram for explaining a resin manhole according to an embodiment of the present invention. In FIG. 1, a vinyl chloride resin manhole 11 includes a cleaning port 12 connected to the manhole and an outlet port 1 provided in the downstream direction of the sewage.
3 and the receiving port expanded portion 14 provided in the upstream direction of the sewage
And a leg portion 15 provided below the vinyl chloride resin manhole 11. The vinyl chloride resin manhole 11 is manufactured by injection molding of vinyl chloride resin. 2 is an embodiment of the present invention and is a cross-sectional view of the spigot portion in FIG. 1 and 2,
The outlet 13 has a rib 13 formed along the circumferential direction.
The first thermosetting resin member 136 having No. 1 is the straight pipe portion 13
5 by reaction injection molding. Similarly, a second thermosetting resin member 137 is formed on the cleaning opening 12 side of the insertion opening 13 with a predetermined gap.

The reaction injection molding mold is an inner mold composed of the straight tube portion 135 of the spigot 13, a protrusion for molding between the ribs, and a protrusion for the space between the thermosetting resin members 136 and 137. It consists of a split outer mold with. The thermosetting resin injected into this mold is composed of a norbornene-based monomer, for example, dicyclopentadiene as a main component, and a metathesis catalyst (halide, oxide such as tungsten or molybdenum) known as a catalyst for ring-opening polymerization. Those which undergo ring-opening polymerization in the presence (Japanese Patent Publication No. 3-28451, Japanese Patent Publication No. 4-9
No. 812, Japanese Patent Publication No. 6-13563, No. 6
The details are described in JP-A-24806). The thermosetting resin is excellent in rigidity, impact resistance, elasticity, low viscosity, low absorbency, heat resistance, and appropriate shrinkage, and is lightweight as a resin member.

The thermosetting resin having such properties is
Due to its low viscosity, reaction injection molding is easy and
Has good adhesion to the straight pipe portion 135. A rubber ring 133 is attached between the thermosetting resin member 136 and the thermosetting resin member 137. After that, the thermosetting resin members 136 and 137 and the rubber ring 133 are covered by fitting a not-shown diametrically expanded portion 14 of the ribbed tube.

FIG. 3 is a view for explaining the joining of the thermosetting resin and the straight pipe portion on the outlet side in another embodiment of the present invention. 3 is different from FIG. 2 in that protrusions 31 and 32 are provided along the outer peripheral surface of the straight pipe portion 135. The protrusions 31 and 32 can be provided when the vinyl chloride resin manhole 11 is manufactured, or can be provided later by welding a welding rod.
The vinyl chloride resin manhole 11 and the thermosetting resin members 136 and 137 used in this embodiment have good adhesion due to heat-curing shrinkage, but by using this embodiment, more complete adhesion can be obtained. I shall.

FIG. 4 is a view for explaining a thermosetting resin member having a different shape in the straight pipe portion on the outlet side according to still another embodiment of the present invention. In FIG. 4, FIG. 2 and FIG.
The difference is that the thermosetting resin members 136 and 137 are integrally molded, and the thin portion 41 is formed to improve the tightening by the rubber ring 133, and the rib 42 is thicker. is there. In this embodiment, the number of molds is one, so that the cost is lower than that in which a thermosetting resin member is separately provided.

FIG. 5 is a partially enlarged view of the expanded diameter portion of the receiving port for explaining one embodiment of the present invention. FIG. 6 is a diagram for explaining a state in which a thermosetting resin member with ribs is formed on the expanded diameter portion of the receiving port in the embodiment of the present invention. In FIG. 5, a rubber ring mounting groove 141 is provided in the receiving opening expanded portion 14. Since the rubber ring mounting groove 141 does not become smooth even when the receiving port expanded portion 14 is expanded, it is cut by selecting any one of the cutting lines A, B and C shown in FIG. For example, a part of the rubber ring mounting groove 141 can be left like the cutting line A, and the left part can be an engaging part. Further, if the cutting line C is too close to the manhole, there is a problem because the portion for engaging the thermosetting resin member becomes too small.

Thereafter, the heated die having a predetermined size is inserted into the inner diameter expansion part 14 to expand the inner diameter expansion part 14 to a predetermined size. However, the member of the expanded-diameter receiving port expanded portion 14 is thinned due to the expanded diameter, and the strength is reduced. Therefore, a thermosetting resin member, which serves as a reinforcing layer, is formed on the receiving opening expanded portion 14 by reaction injection molding. This reinforcing layer may be, for example, a rib having a cross section as shown in FIG. A straight pipe with a rib (not shown) is inserted into the expanded-diameter receiving port expanded portion 14 via a rubber ring. Further, the above cutting may be performed after heating and expanding the diameter. As described above, the inner mold can be used for the mouth or the mouth of the manhole, and the outer mold can be an inexpensive mold because it only needs to cover the mouth and the mouth. Further, since the outer die has no relation to the bending direction, only the type of the bore needs to be prepared.

FIG. 7 is a view for explaining a state in which a thermosetting resin member having ribs is molded except for the peripheral portion of the cleaning opening in the manhole in another embodiment of the present invention. In FIG. 7, after the diameter of the receiving port expanded portion 14 is expanded to a predetermined inner diameter, the vinyl chloride resin manhole 11 is covered with an outer mold. Then, the thermosetting resin member is subjected to reaction injection molding in a mold to obtain a shape as shown in FIG. In the embodiment shown in FIG. 7, the ribs are provided along the circumferential direction of the manhole, but it is also possible to provide the ribs along the axial direction of the manhole.

(Example) For an inner diameter of 200 mm, the outer diameter of the outlet pipe 216.7 mm, the inner diameter of the expanded portion of the ribbed pipe 228.8 mm, the difference between the above 12.1 mm, the inner diameter of the inlet pipe 217.3 mm, and the ribs Outer diameter of straight pipe part of tube 229.7 mm Difference between the above 12.4 mm In this embodiment, in order to eliminate the difference of about 12 mm, the inlet 13 is covered with a thermosetting resin member with a rib, and the diameter of the receiving port is expanded. The diameter of the portion 14 is enlarged, and the weakened portion is covered with a thermosetting resin member.

Although the present embodiment has been described in detail above, the present invention is
The present invention is not limited to the above embodiment. Various design changes can be made without departing from the present invention described in the appended claims. The thermosetting resin member is excellent in rigidity, impact resistance, and elasticity, and has a low viscosity, in addition to a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst.
It is not limited as long as it has low absorbency, heat resistance, and thermosetting property.

Particularly, the above-mentioned Japanese Patent Publication No. 3-28451, Japanese Patent Publication No. 4-9812, and Japanese Patent Publication No. 6-13563.
JP, JP-B-6-24806, JP-A-6-82
The reaction injection molding material described in Japanese Patent Publication No. 73 can be used. Needless to say, the shapes of the reinforcing ribs formed on the outlet and the receiving port do not have to be the same as the ribs of the ribbed tube, and can be variously modified. In the embodiment, the outer mold is described in two,
More divisions can be made depending on the shape of the ribs. Needless to say, the present invention can be applied to manholes having different angles or a confluence type manhole having two receiving ports, as in the conventional example.

[0043]

According to the present invention, it is not necessary to prepare many manhole dies for exclusive use of expensive rib tubes. According to the present invention, since the vinyl chloride resin manhole has an inner opening and a lower opening, only an outer die is required for the opening and the receiving opening, which is an inexpensive die. According to the present invention, since the inlet and the outlet of the vinyl chloride resin manhole are covered with the thermosetting resin member, the strength of the vinyl chloride resin manhole is improved. According to the present invention, since a thermosetting resin member having a low viscosity and an appropriate shrinkage property at the time of thermosetting is used, the reaction injection molding is easy and the adhesion with the vinyl chloride resin manhole is improved. According to the present invention, since a resin member having excellent rigidity, impact resistance, and elasticity, and having low viscosity, low absorption, heat resistance, and thermosetting property is used,
It was the best manhole for sewers.

[Brief description of the drawings]

FIG. 1 is a view for explaining a vinyl chloride resin manhole in an embodiment of the present invention.

FIG. 2 is a sectional view of the outlet side of FIG. 1 according to an embodiment of the present invention.

FIG. 3 is a view for explaining joining of the thermosetting resin in the straight pipe portion of the outlet and the straight pipe portion of the outlet in another embodiment of the present invention.

FIG. 4 is a view for explaining thermosetting resin members having different shapes according to still another embodiment of the present invention.

FIG. 5 is a partially enlarged view of the receiving port expanded diameter portion for explaining the embodiment of the present invention.

FIG. 6 is a view for explaining a state in which a thermosetting resin member with ribs is molded on the expanded diameter portion of the receiving opening in the embodiment of the present invention.

FIG. 7 is a view for explaining a state in which a thermosetting resin member having ribs is molded except for a peripheral portion of a cleaning opening in a manhole in another embodiment of the present invention.

FIG. 8 is a view for explaining a method of connecting a concrete manhole and a vinyl chloride resin ribbed pipe in a conventional example.

FIG. 9 is a diagram for explaining a method of connecting a concrete manhole and a vinyl chloride resin ribbed pipe in a conventional example.

FIG. 10 is a view for explaining a vinyl chloride resin manhole for joining a normal ribless resin pipe.

[Explanation of symbols]

 11 ... Vinyl chloride resin manhole 12 ... Cleaning port 13 ... Inlet port 131..Rib 133..Rubber ring 135..Outlet side straight pipe part 136..First thermosetting resin member 137 ... Second thermosetting resin member 14 ... Receiving opening expanded portion 141 ... Rubber ring mounting groove 145 ... Receiving tube 146 ... Cutting end 147 ... Rib 148 ... Thermosetting Resin member 15 ... Leg portion 31, 32 ... Projection portion 41 ... Thin portion 42 ... Thick rib

Claims (10)

[Claims] 1. A vinyl chloride resin manhole in which the inner diameter of the vinyl chloride resin ribbed pipe inlet expanded portion and the outer diameter of the vinyl chloride resin manhole inlet side straight pipe portion are different. It is attached to the inlet side straight pipe part of the manhole and adheres to the outer peripheral surface of the tip of the inlet side straight pipe part of the vinyl chloride resin manhole, which is excellent in rigidity and impact resistance, and also has low absorbency, heat resistance, And a first resin member having ribs formed of a thermosetting resin member, and the same material as the first resin member at the insertion side of the vinyl chloride resin manhole and with a space therebetween. The second resin member, which is arranged on the cleaning port side of the vinyl chloride resin manhole and has the ribs, is provided between the first resin member and the second resin member, which have the ribs. Rubber ring, Vinyl chloride resin ribbed pipe vinyl chloride resin manhole, characterized in that it has a spigot portion being eclipsed. 2. The first resin member and the second resin member are engaged with each other by a concave portion or a convex portion provided on the outer periphery of a straight pipe portion on the outlet side of a vinyl chloride resin manhole. The vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to claim 1. 3. The first resin member and the second resin member are integrally formed, and a rubber ring is provided in a groove between the ribs. Vinyl chloride resin manhole for pipes made of vinyl chloride resin. 4. A vinyl chloride resin manhole having a different outer diameter in the straight pipe portion of the vinyl chloride resin ribbed pipe and an inner diameter in the expanded diameter portion of the vinyl chloride resin manhole, Rigidity and impact, which are cut from the tip of the expanded manhole socket to at least the groove for mounting the rubber ring and are expanded to the expanded socket, which is in close contact with the outer peripheral surface of the expanded socket. The third aspect in which the reinforcing layer is formed of a resin member having excellent absorbency, heat resistance, and thermosetting property as well as excellent heat resistance.
A vinyl chloride resin manhole for a pipe with a rib made of a vinyl chloride resin, characterized in that it has a receiving port expanded portion provided with the resin member. 5. The first resin member to the third resin member integrally cover the entire vinyl chloride resin manhole except for the vicinity of the cleaning port.
A vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to claim 4. 6. The reaction injection molding material according to claim 1, wherein the first to third resin members are norbornene-based monomers and a metathesis catalyst as main components. Vinyl chloride resin manholes for pipes made of vinyl chloride resin. 7. The vinyl chloride resin manhole for a pipe with a vinyl chloride resin rib according to claim 4 or 5, wherein the third resin member is provided with a rib. 8. A ribbed pipe made of vinyl chloride resin and a vinyl chloride resin having different inner diameters from the expanded portion of the vinyl chloride resin ribbed pipe inlet and the outer diameter of the straight pipe portion of the inlet side of the vinyl chloride resin manhole In the method of joining to the manhole made of vinyl chloride, the rigidity and impact resistance are closely adhered to the inner mold consisting of the straight pipe part of the inlet side of the vinyl chloride resin manhole and the outer peripheral surface of the straight pipe part of the inlet side of the vinyl chloride resin manhole. And a step of providing an outer die for forming ribs with a resin member having low absorbency, heat resistance, and thermosetting property, and injecting the resin member between the inner die and the outer die. And the reaction injection molding, and a step of bringing a thermosetting resin member having a rib into close contact with the straight pipe portion on the outlet side by the reaction heat and the shrinkage by thermosetting; and a step of attaching a rubber ring between the ribs. , The rib A method of joining a vinyl chloride resin ribbed pipe and a vinyl chloride resin manhole, comprising a step of fitting a vinyl chloride resin ribbed pipe receiving port expanded portion on the outer periphery of the rubber ring. . 9. A vinyl chloride resin ribbed pipe and a vinyl chloride resin having different outer diameters at the outlet side straight pipe portion of the vinyl chloride resin ribbed pipe and different inner diameters at the vinyl chloride resin manhole receiving expanded portion In a joining method for joining a manhole made of vinyl chloride resin, cutting from the tip of the expanded diameter portion of the vinyl chloride resin manhole to at least the groove for mounting the rubber ring, and the expanded diameter portion of the vinyl chloride resin manhole A step of performing a diameter expansion process, an inner mold made of the expanded diameter expanded mouth portion, and an outer peripheral surface of the expanded diameter mouth portion, which is excellent in rigidity and impact resistance, and has low A step of providing an outer mold for forming a reinforcing layer with a resin member having absorbency, heat resistance, and thermosetting property; and injection molding the resin member by injecting the resin member between the inner mold and the outer mold. Together with the reaction heat and heat From the step of bringing the thermosetting resin member into close contact with the expanded diameter portion of the receiving opening by curing shrinkage, and the step of inserting the straight pipe portion on the inlet side of the ribbed pipe made of vinyl chloride resin into the expanded diameter portion of the receiving opening, A method of joining a vinyl chloride resin ribbed tube and a vinyl chloride resin manhole, wherein 10. The reaction injection molding material comprising a norbornene-based monomer and a metathesis catalyst as a main material, wherein the resin member to be reaction injection molded into the vinyl chloride resin manhole is a material for reaction injection molding. A method for joining a vinyl chloride resin ribbed tube and a vinyl chloride resin manhole as described above.