JPH101961A - Mounting plate with cylindrical hole for repair or extension construction work of side-face hole in existing manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the damage repair construction works or new extension construction works of a side-face hole for the running water pipe of an existing manhole by installing a mounting plate, to which a cylindrical hole for inserting the running water pipe is molded integrally and which is made of a hard rubber, onto the side wall of the marthole. SOLUTION: A side-face hole 8b is formed to the side wall of an existing marthole 8 in larger size, the cylindrical section 3 of a mounting plate 1 made of a hard rubber is inserted, the mounting plate 1 is fixed to the manhole 8 by a bolt 6 and a nut 6b, and a reinforcing bar 10 is wound in a ring-shaped clearance 12 between the cylindrical section 3 and the side-face hole 8b by a wire 11 and the clearance 12 is filled with an elastic joint filler 13. A flexible cutoff joint 14 is fitted into the cylindrical hole 4 of the mounting plate 1, and pushed and fixed by an ended circular ring 17, a running water pipe 15 is inserted and fitted into an internal rubber cylindrical section 14b and fastened by a band 16, a protective ring 19 preventing the penetration of soil and sand is mounted, and a section between the flexible cutoff joint 14 and the pipe end of the running water pipe 15 is filled with an elastic joint filler 20. Accordingly, the running water pipe 15 can be inserted and set up easily into the existing manhole 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting plate with a cylindrical hole used for repairing a damaged side hole in an existing manhole or forming a newly added side hole.

[0002]

2. Description of the Related Art When repairing a side hole part of an existing manhole due to an earthquake or vibration, or when adding a new side hole to the existing manhole, scrub around the damaged side hole on site. Although it will be necessary to align or make new holes, in any case it is not possible to drill holes that are smooth and smooth like the ones drilled with the factory drilling machine, so the inner surface of the holes is finished with cement mortar. Had to be repaired.

[0003]

However, finishing with cement mortar requires skill, and during working and until the cement mortar is solidified, it is necessary to stop or bypass the running water, which is equivalent to construction. However, there is a problem in that the solidification and shrinkage of the cement mortar causes skin separation between the pore surface and a gap to induce water leakage.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a mounting plate portion provided along the outer wall surface of a manhole and provided with bolt insertion holes spaced around the perimeter, and a wall thickness of the manhole in the middle of the mounting plate portion. A manhole provided with a tubular hole for inserting a running water pipe having a tubular portion projecting to one side with a considerable length, and having a bore larger than the outer diameter of the tubular portion for repairing or adding the tubular portion. In order to solve such a problem, the fitting plate portion is fitted into the side surface hole of the manhole and bolted and fixed to the wall surface of the manhole, and the annular joint between the side surface hole and the cylindrical portion is filled with an elastic joint material. Is what you do.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

1 to 4 show a first embodiment of the present invention, in which a mounting plate 1 is a flat surface or a curved surface in plan view along the wall shape of an existing manhole 8 such as a prism or a cylinder. A cylindrical hole 4 having a mounting plate portion 2 formed in a shape and a cylindrical portion 3 protruding toward one side of the mounting plate portion 2 with a length corresponding to the thickness of the wall 8a of the existing manhole 8 is provided in the middle of the mounting plate portion 2. Molded with hard rubber material. Reference numeral 5 denotes an insertion hole for a bolt 6 provided at intervals around the mounting plate portion 2, and reference numeral 7 denotes an integrated or vulcanized molding around a surface of the mounting plate portion 2 applied along the outer wall surface of the existing manhole 8. The water-swellable rubber layer provided.

Numerals 9 and 9 are two ridges provided at intervals in the middle of the outer peripheral surface of the tubular portion 3, and a deformable spiral reinforcing bar 10 is wound around the outer periphery of the tubular portion 3 and Reinforcing bars 10 are formed on the tubular portion 3 by binding them with wire 11 wound between the ridges 9 and 9.
It is something that you do not get out of.

[0008] The mounting plate 1 with the cylindrical hole configured as described above.
For repair of damage or by new addition, insert the tube portion 3 into the side hole 8b having a diameter larger than the tube portion 3 and insert it into the insertion hole 5 position of the mounting plate portion 2. The stainless steel or hard plastic bolt 6 is passed through the bolt hole 8c of the wall 8a of the manhole 8 that is drilled together, and the nut 6b of the same material is tightened and attached to the manhole 8, and further, the cylindrical portion 3 and the side hole 8b are fixed. An elastic joint material 13 such as cement mortar containing rubber latex is joint-filled with the reinforcing bar 11 inserted in a ring-shaped gap 12 formed therebetween.

The reinforcing bar 11 is freely deformable and can be accommodated in the ring-shaped gap 12 by adjusting the height according to the width of the ring-shaped gap 12. The manhole 8 is exposed inside the side hole 8b.
It will be more stable if it is bound and fixed to the rebar 8d.

In FIG. 2, the head portion 6a of the bolt 6 is
The stepped portion 8e is provided at the inner end of the bolt hole 8c so as not to project inside the manhole 8, and the joint is filled after the installation is completed. However, as shown in FIG. May be opened, and the anchor member 6c with a screw hole may be beaten and fixed.

A washer 6d formed of a water-expandable rubber sheet is fitted on the inner surfaces of the head portion 6a and the nut 6b of the bolt 6 alone or in combination with an ordinary washer so as to prevent water leakage. .

The bolts 6 are provided not only around the four corners but also around the edge of the side hole 8b, so that the cylindrical hole 4 can be prevented from floating from the wall surface of the manhole 8.

After the mounting plate 1 with a cylindrical hole of the present invention is mounted and fixed to the existing manhole 8 as described above, the outer rubber ring 14a and the outer rubber ring are inserted into the cylindrical hole 4 as shown in FIG. A flexible water stop joint 14 including an inner rubber tube portion 14b that is flexibly connected to the inner end of the body 14a and is externally fitted to a running water pipe 15 that is fitted and inserted into the connection hole 4 and that is band 16 tightly attached, Rubber ring 1
The inner rubber tubular portion is fitted with an endless circular ring 17 that expands and presses the outer rubber ring 14a into the connection hole 4 inside the 4a.
14b is fitted into the running water pipe 15 which is fitted into the connection hole 4, and the band 16 is fastened and fixed to the pipe surface.

Reference numeral 18 denotes a pull-out stopper member attached to the pipe surface inside the band 16 tightened portion of the running water pipe 15, and the band is formed by thickly winding an adhesive tape, or by attaching a rubber ring, an end plastic ring or the like to the band. Even if the 16 tightening portion and the water pipe 15 are displaced and moved, the extraction stopper member 17 abuts, thereby preventing further extraction. Also
Reference numeral 19 is a protection ring for preventing intrusion of earth and sand into the flexible waterproof joint 14, and 20 is an elastic joint material filled between the flexible waterproof joint 14 and the ends of the running water pipe 15.

FIG. 6 shows a second embodiment of the present invention.
This shows an example in which a mounting cylinder portion 21 for 16-tight mounting is integrally formed. The mounting cylinder 21 which needs flexibility is a continuous cylinder 3
Is formed of a soft rubber material together with the inner peripheral layer 3a, and the mounting plate 2 made of a hard rubber material and the outer peripheral layer 3b of the cylindrical portion 3 are integrated by vulcanization molding. This is the same as the first embodiment except that the mounting cylinder portion 21 is directly fitted onto the running water pipe 15 and the band 16 is tightened and mounted without using the flexible water stop coupling 14.

In this embodiment, since the diameter of the cylindrical hole 4 can be formed to a small diameter without the flexible waterproof joint 14, the connecting portion 8f of the existing manhole 8 can be formed as shown in FIG. It can be effectively used not only when it is expanded and thickened for reinforcement but also when the side hole cannot be greatly removed due to other on-site conditions.

[0017]

As described above, according to the present invention, the mounting plate with the cylindrical hole is simply bolted to the wall surface of the existing manhole with the cylindrical portion of the mounting plate fitted in the side hole of the manhole. With such a simple installation work, there is an effect that the work of repairing the damaged side hole or the work of newly adding the side hole can be performed in a short time and at low cost.

Since a side hole that is smooth and smooth can be obtained without the need for a person skilled in mortar construction and without the risk of skin separation of cement mortar after construction, a flexible waterproof joint should be fitted tightly. Thus, there is an effect that the water pipe can be inserted and mounted without fear of water leakage.

A projection is provided on the outer periphery of the cylindrical portion so as to prevent a reinforcing bar that is helically deformed and wound around the cylindrical portion from being pulled out, so that an elastic joint filling the annular gap between the cylindrical portion and the side hole is provided. The effect is that the material can be strengthened remarkably stably.

Since the water swelling rubber layer is provided on the peripheral surface of the mounting plate on the wall contact side by coating or vulcanization integral molding, it is possible to reliably prevent water leakage between the mounting plate and the outer surface of the manhole. Produces an effect.

When the mounting cylinder is provided on the other side of the mounting plate by extension of the cylinder, the running water pipe can be inserted and mounted without separately preparing a flexible water stop joint, and the flexible stop is also provided. As the water joint is not used, it is possible to insert and install a large diameter running water pipe by using a mounting plate with a small diameter cylinder part in an existing manhole where the side hole cannot be largely removed. Occurs.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention,
(a) is a perspective view of the mounting plate portion having a planar shape, and (b) is a perspective view of the mounting plate portion having a curved shape in plan view, as viewed from the cylinder portion side.

FIG. 2 is an enlarged vertical sectional side view showing a state in which a tubular portion is fitted into a side hole cut for repair or new extension, and a mounting plate portion is bolted to a wall of a manhole.

FIG. 3A is a front view of the manhole seen from the outside, and FIG. 3B is a rear view seen from the inside of the manhole.

FIG. 4 is a longitudinal sectional side view showing a use state in which a flexible watertight joint is fitted and fixed, and is fitted to a water pipe and band-fixed.

FIG. 5 is a partial cross-sectional view showing an example of bolt attachment by an anchor member.

FIG. 6 is a longitudinal sectional side view showing a state in which a water pipe is fixedly attached according to a second embodiment.

[Explanation of symbols]

 1 is a mounting plate with a cylindrical hole 2 is a mounting plate portion 3 is a cylindrical portion 4 is a cylindrical connection hole 5 is a bolt insertion hole 6 is a bolt 6a is a head portion 6b is a nut 6c is formed of a water-expandable rubber sheet. The washer 6d is an anchor member with a screw hole 7 is a water-expandable rubber layer 8 is a manhole 8a is a wall 8b is a side hole 8c is a bolt hole 8d is a reinforcing bar 8e is a stepped portion of a bolt hole 9 is a ridge 10 is a reinforcing bar 11 Wire 12 is a ring-shaped gap 13 Elastic joint material 14 is a flexible water-tight joint 14a is an outer rubber ring 14b is an inner rubber cylinder 15 is a running water pipe 16 is a band 17 is a closed circular ring 18 is an extraction stopper member 19 is a protective ring 20 is an elastic joint material 21 is a mounting cylinder

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[Procedure amendment]

[Submission date] June 21, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention,
FIG. 7A is a perspective view of the mounting plate portion having a planar shape, and FIG. 6B is a perspective view of the mounting plate portion having a curved surface shape when viewed from the cylindrical portion side.

FIG. 2 is an enlarged vertical sectional side view showing a state in which a cylindrical portion is fitted into a side hole ground for repair or new extension, and a mounting plate portion is bolted to a wall of a manhole.

FIG. 3A is a front view of the same state as seen from the outside of the manhole, and FIG. 3B is a back view as seen from the inside.

FIG. 4 is a vertical cross-sectional side view showing a usage state in which a flexible waterproof joint is fitted and fixed, and a flexible water fitting is fitted and fixed in a band by a band.

FIG. 5 is a partial cross-sectional view showing an example of bolt attachment by an anchor member.

FIG. 6 is a vertical sectional side view showing a state where a flowing water pipe is fixedly attached according to a second embodiment.

[Description of References] 1 is a mounting plate with a cylindrical hole 2 is a mounting plate portion 3 is a cylindrical portion 4 is a cylindrical connection hole 5 is a bolt insertion hole 6 is a bolt 6a is a head portion 6b is a nut 6c is an anchor with a screw hole The member 6d is a washer formed of a water-expandable rubber sheet 7 is a water-expandable rubber layer 8 is a manhole 8a is a wall 8b is a side hole 8c is a bolt hole 8d is a reinforcing bar 8e is a stepped portion of a bolt hole 9 is a protrusion 10 Is a reinforcing bar 11 is a wire 12 is a ring-shaped gap 13 Elastic joint material 14 is a flexible waterproof joint 14a is an outer rubber ring body 14b is an inner rubber tubular part 15 is a running water pipe 16 is a band 17 is an end circular ring 18 is a stopper Member 19 is a protective ring 20 is an elastic joint material 21 is a mounting cylinder portion ─────────────────────────────────── ──────────────────

[Procedure amendment]

[Submission date] August 6, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

[Figure 1]

[Fig. 2]

FIG. 4

FIG. 3

FIG. 5

FIG. 6

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shin Otsuga 3-7-20 Nakajima, Toyama City, Toyama Prefecture Satake Building 2F, Sanritsu Co., Ltd. (72) Inventor Soji Ishinada 3-7-20 Nakajima, Toyama City, Toyama Prefecture Satake Building 2F Sanritsu Co., Ltd.

Claims (5)

[Claims] 1. A mounting plate having a bolt insertion hole which is provided along the outer wall surface of a manhole and provided with bolt insertion holes spaced around the perimeter, and one side having a length equivalent to the wall thickness of the manhole in the middle of the mounting plate. A tubular hole for inserting a running water pipe having a protruding tubular portion is provided, and the tubular portion is fitted into a side hole of a manhole bored larger than the outer diameter of the tubular portion for repair or extension. The mounting plate portion is bolted and fixed to the wall surface of the manhole so that the elastic joint material is filled in the ring-shaped gap between the side surface hole and the cylinder portion. Mounting plate with cylindrical holes for construction. 2. The mounting plate according to claim 1, further comprising a mounting cylinder portion on the other side of the mounting plate portion, the mounting cylinder portion being externally fitted to the running water pipe by extension of the cylinder portion and tightened with a band. 3. The mounting plate according to claim 2, wherein the mounting plate portion and the outer peripheral layer of the cylindrical portion are made of a hard rubber material, and the inner peripheral layer of the cylindrical portion and the mounting cylindrical portion are made of a soft rubber material and integrally vulcanized. 4. A ridge is provided on the outer periphery of the tubular portion, and a deformable reinforcing bar such as a spiral wound around the outer periphery of the tubular portion inside the ridge is prevented from being pulled out. Mounting plate described in 3. 5. The mounting plate according to claim 1, wherein a water-expandable rubber layer is provided on the peripheral surface of the mounting plate on the wall contact side by coating or vulcanization molding.