KR100645010B1 - Manhole for watertight coupling and method for coupling pipe by using them - Google Patents

Abstract

The present invention relates to a watertight coupling manhole structure for forming a watertight rubber plate at a portion to which a pipe is to be joined in advance, and to maintain watertightness at a pipe connecting portion by penetrating and tightening the rubber plate during pipe coupling. will be.

The present invention for realizing this, in the manhole structure formed with a pipe connecting groove is formed in the body of the pipe, the pipe connecting groove is integrally coupled with a rubber plate having a diameter larger than the diameter of the pipe connecting groove integrally, the entire edge of the rubber plate A structure which is integrally formed in the body around the pipe connecting groove; A rubber plate fixed to the pipe connecting groove of the manhole structure installed in the cavity is cut radially by drawing two or more perforations with a length close to the diameter of the pipe to be connected, and penetrates the end of the pipe through the central incision of the rubber plate. After fixing the central cut-out of the rubber plate to the outer circumferential surface of the perforated pipe tightly to the pipe by using a band, the gap between the outer circumferential surface of the pipe and the manhole structure in the pipe connecting groove with cement mortar to fix the method. It is an invention made.

Manhole, Water Expansion Resin, Watertight, Connector Connector, Pipe, Band

Description

Manhole structure for watertight coupling and pipe coupling method using the same {manhole for watertight coupling and method for coupling pipe by using them}             

1 is a view for explaining a pipe connection structure of a conventional manhole structure,

Figure 2 is a view showing an embodiment of a manhole structure formed integrally with a conventional connection for pipe connection,

3a and 3b is a perspective view and a main cross-sectional view of the manhole structure according to the invention,

Figure 4a is a cross-sectional view of the pipe coupling of the manhole structure according to the present invention,

Figure 4b is a cross-sectional view showing a pipe coupling according to another embodiment of the manhole structure according to the present invention.

<Description of the symbols for the main parts of the drawings>

10-manhole structure, 12-pipe joint groove,

14-pipe, 16-cement mortar,

18-pipe connection member, 20-body,

22-rubber plate, 22a-central incision,

24-band, 26-cement mortar.

The present invention relates to a watertight coupling manhole structure for maintaining watertightness when bonding with a pipe, and a pipe bonding method using the same. The present invention relates to a watertight coupling manhole structure for maintaining watertightness at a pipe connecting portion by tightening a rubber plate and a pipe bonding method using the same.

In general, a manhole is a place where people can easily enter and exit a pipe, a crossing point, or a long straight section where the thickness and direction of the pipe change, to inspect, repair, or clean the water pipes, sewer pipes, and wiring buried in the ground. As a facility of pipes installed by digging, for example, in the case of sewer manholes, various sewage and debris are filtered out so that sewage flows smoothly and the pipes are not blocked.

The manhole structure is manufactured by using the formwork at the production plant or installation site to cure concrete in tubular form, and the manhole structure is used by connecting pipes buried underground to communicate with the space inside the manhole structure. For the purpose of manhole structure, pipe connecting grooves may be pre-formed during the manufacturing process or perforated during construction.

However, in the manhole structure that does not form the pipe connection groove at the time of manufacture, the connection groove for joining the pipe must be drilled in the field construction process, and the crack is generated around the connection groove drilled by the force applied to the manhole structure during the drilling. However, these cracks are initially left as fine cracks, but once generated, the cracks expand over time, causing leakage.

When the pipe is formed at the time of manufacture or when the pipe is connected to the pipe connection groove in the state in which the pipe connection groove is formed during construction, the pipe is connected to the pipe connection groove 12 of the manhole structure 10 as shown in FIG. 1. (14) penetrates the tip and fills the gap between the outer circumferential surface of the pipe (14) and the pipe connecting groove (12) with cement mortar (16) to secure the bond and maintain the watertight finish. Doing.

However, a gap occurs due to the contraction force between the pipe 14 and the cement mortar 16, so that the same shrinkage force occurs between the space between the manhole structure 10 and the pipe 14, so that a leak may occur through the gap. There was this.

FIG. 2 is a view illustrating an embodiment of a manhole structure in which a pipe connection connector is integrally formed, and the inconvenience caused by applying cement mortar to the connection portion whenever a pipe is joined to the manhole structure, or a crack generated due to the properties of cement mortar. In order to solve the problem that continuous airtightness is difficult, it is a structure formed integrally with the buried connection member 18 connected to the internal space of the manhole structure 10 when the manhole structure 10 is placed. have. The pipe connecting member 18 is exposed to the outer surface of the manhole structure 10 for a predetermined length, when connecting the pipe 19 inserts the pipe 19 to the free end of the pipe connecting member 18 to a predetermined depth The outer surface of the connection area between the pipe 19 and the pipe connecting member 18 is wound with a tape of thermoplastic material and heat-sealed, while a rubber ring or an expansion index agent is wound around the outer surface of the buried portion of the pipe connecting member 18 to manhole. The rubber ring or the expansion index agent is interposed between the side wall of the structure 10 and the buried portion of the tube connecting member 18 integral with the manhole structure 10 so that the side wall of the manhole structure 10 and the tube connecting member 18 are interposed. It is possible to maintain the confidentiality between the embedments.

However, the manhole structure of such a structure is likely to be separated from the external impact during transport or construction during the transport or construction of the manhole structure, or a gap is likely to occur in the coupling portion between the manhole structure and the pipe connection member by such an impact. There is an inconvenience in that airtight treatment should be done by using rubber ring or water-expansion index agent at the contact area between the pipe and the connection member, and airtight treatment using thermoplastic tape is required at the contact area between the pipe connection member and the pipe. Rather, the larger the difference in diameter between the pipe connection member and the pipe, the larger the gap occurs when joining, which makes it difficult to join.

The present invention is invented to improve the above problems, the manhole structure is formed so as to block the pipe connection groove with a rubber plate having a larger diameter than the pipe connection groove when the pipe connection groove is integrally formed while forming the manhole structure When the pipe is connected to the fraudulent manhole structure, the rubber plate is cut through the pipe, and then the cutout portion of the rubber plate, which is in contact with the outer circumferential surface of the pipe, is fixed to the pipe using a band to maintain watertightness, and the manhole structure The purpose of the present invention is to provide a watertight coupling manhole structure and a pipe bonding method using the same, which are filled with cement mortar in a gap between the pipe and the pipe.

The manhole structure for watertight coupling according to the present invention for achieving the above object, in the manhole structure formed with a pipe connecting groove is formed in the body of the pipe, the pipe connecting groove is integrally coupled with a rubber plate larger than that However, the entire edge of the rubber plate is embedded in the body around the pipe connecting groove, characterized in that formed integrally.

In addition, the pipe coupling method using the watertight coupling manhole structure according to the present invention, the rubber plate is fixed to the pipe connecting groove of the manhole structure provided in the cavity, at least two perforations with a length close to the diameter of the pipe to be connected Then, a radial incision is made, the end of the pipe is penetrated to the central cut end of the rubber plate, and the center cut end of the rubber plate that is extended to the outer circumferential surface of the penetrated pipe is fixed to the pipe using a band, and then the pipe outer circumference is The gap between the manhole structure is characterized by filling with cement mortar.

In the above, the pipe contact surface of the central portion of the rubber plate that is fixed to the pipe by the band is characterized in that it is fixed by the band after applying the adhesive.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3A and 3B show a perspective view and a main cross-sectional view of a manhole structure according to the present invention, respectively.

One side of the body 20 of the tubular body is formed with a pipe connecting groove 12 for connecting the pipe 14. Pipe connecting groove 12 is formed of a diameter slightly larger than the diameter of the pipe 14, and is formed in a circular shape in consideration of the convenience of manufacturing and the shape of the pipe to be connected generally, but in some cases square or other It can be formed into a shape.

The pipe connecting groove 12 is integrally formed with the rubber plate 22 embedded when the body 20 is formed. Therefore, the pipe connecting groove 12 is formed in a state blocked by the rubber plate (22). And it is preferable that the edge portion embedded in the body 20 in the rubber plate 22 is sufficiently buried enough to be firmly maintained without being separated from the embedded state, and also formed of a water-expandable index material when contacted with water It is preferable to keep the watertight state tightly by allowing it to expand.

Next, a pipe coupling method using a watertight coupling manhole structure based on the pipe coupling cross section of the manhole structure shown in FIG. 4A will be described.

In order to couple the pipe 14 to the pipe connecting groove 12 of the manhole structure body 20, as shown by the dotted line on the rubber plate 22 in FIG. 3A, the center portion of the rubber plate 22 is first opened with a knife. Make an incision. The cutout shape is not limited to a crisscross shape, and the pipe 14 may be inserted radially in any quantity so as to facilitate the insertion of the pipe 14 but not to cause many cutoff lines. And the length of the cut is preferably the same size as the diameter of the pipe 14 so that the insertion of the pipe 14 to be connected is smooth and the gap is not generated by the cutting groove in the inserted state.

Thereafter, the tip of the pipe 14 is penetrated between the cut rubber plates 22, that is, into the connecting groove 12. At this time, the central cut end 22a of the cut rubber plate 22 is pushed in a horizontal direction along the outer circumferential surface of the pipe 14.

In this way, the central cut-out portion 22a of the rubber plate 22, which is pushed horizontally along the outer circumferential surface of the pipe 14, is made of a metal material such as stainless steel, which is hardly corroded by contact with synthetic resin or water. Secure the pipe (14) with (24). In FIG. 4A, when the pipe 14 is inserted into the pipe connecting groove 12, the central cut end 22a of the rubber plate 22 is inserted along the outer circumferential surface of the pipe 14 by the insertion of the pipe 14. 20) While the embodiment shown in the state in which the band 24 is fastened in a state of being pushed in the horizontal direction toward the inner direction, as shown in FIG. 4B by inserting the pipe 14 into the pipe connecting groove 12, rubber plate 22 In the state in which the central portion of the pipe 14 is pushed in the horizontal direction inside the body 20 along the outer circumferential surface of the pipe 14 so that the pipe 14 does not leave the rubber plate 22 so that the body 14 outside the body 20. It can also be secured by fastening with the band 24 in the state in which the central cut end 22a of the rubber plate 22 is pushed out in the horizontal direction of the outside of the body 20 along the outer circumferential surface of the pipe 14. Functionally, the fastening example shown in Fig. 4A and the fastening example shown in Fig. 4B exhibit almost the same functions.

After fixing the central cut-out portion 22a of the rubber plate 22 pushed out in the horizontal direction to the pipe 14 with the band 24, the pipe 20 of the body 20 and the pipe 14 in the pipe connection groove 12 The gap generated between the outer circumferential surface is filled with cement mortar 26.

Accordingly, the gap generated between the body 20 and the outer circumferential surface of the pipe 14 in the state where the pipe 14 is inserted into the pipe connecting groove 12 is filled with cement mortar 26 so that the pipe 14 is connected to the pipe. It is possible to maintain the state firmly fixed to the body 20 in the state inserted into the groove 12, and the gap generated between the outer peripheral surface of the body 20 and the pipe 14 is cement mortar 26 and rubber plate The double watertight action by (22) makes it possible to maintain a hermetic watertight state.

On the other hand, before the center cut end 22a of the rubber plate 22 is fastened by the band 24, the adhesive is applied to the center cut end 22a of the rubber plate 22 in contact with the outer circumferential surface of the pipe 14. The watertight effect may be further enhanced by tightening the band 24 to triple watertight action.

As described above, the present invention can change the cutting position of the rubber plate closing the pipe connecting groove according to the diameter and height of the pipe to be connected or the position in the horizontal direction to change the pipe to the pipe connecting groove of the manhole structure When combining, there is an advantage that it is easy to adjust the position according to the position of the pipe.

In addition, the water gap between the pipe connection groove and the manhole structure in the state of being inserted into the pipe connection groove is watertightly filled with a rubber plate made of a water-expandable index member, and the rubber plates in the pipe connection grooves are filled with cement mortar to fill the watertightness. It is effective to prevent leakage by strengthening.

Claims (3)

In a manhole structure in which a pipe connecting groove is formed in the body of the pipe and a watertight member is installed in the pipe connecting groove to connect the pipe via the watertight member, the watertight member installed in the pipe connecting groove is a pipe connecting groove. A rubber plate having a diameter larger than a diameter is integrally coupled, and the entire edge of the rubber plate is integrally formed by being embedded in a body around a pipe connecting groove and formed integrally. A rubber plate fixed to the pipe connecting groove of the manhole structure installed in the cavity is cut radially by drawing two or more perforations with a length close to the diameter of the pipe to be connected, and penetrates the end of the pipe through the central incision of the rubber plate. Watertight coupling, characterized in that the central cut-out of the rubber plate spreading to the outer circumferential surface of the perforated pipe is fixed to the pipe by using a band, and then the gap between the outer circumferential surface of the pipe and the manhole structure is fixed with cement mortar in the pipe connecting groove. Pipe joining method using manhole structure. The pipe joining method of claim 2, wherein the pipe contact surface of the central cut end portion of the rubber plate fixed to the pipe by the band is fixed by a band after applying an adhesive.

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