KR100684917B1 - Device for connecting pipe in manhole - Google Patents

Abstract

A pipe connection device for a manhole is provided to effectively prevent leakage of water by enhancing airtightness, especially at a head portion of a bolt although fastening pressure among bolts is uneven, accordingly improving constructability of a water pipe. A pipe connection device for a manhole comprises a hollow ring(10), and an expansion unit. The hollow ring is disposed between a pipe connector of the manhole and a water pipe. The expansion unit expands outer diameter of the hollow ring, thereby tightly contacting the hollow ring with the pipe connector and the water pipe. More specifically, the expansion unit comprises an insertion hole(11), a fixing pressure member(12), a fastening hole(13), a nut pressure member(14), a fastening hole(15), a fastening bolt(20), a nut(21), and a sealing ring(30). The insertion hole is formed by penetrating both leading ends of the hollow ring. The fixing pressure member has a ring shape corresponding to the leading end of the hollow ring. The fastening hole is formed on a surface of the fixing pressure member corresponding to the insertion hole. The nut pressure member is disposed at the other leading end of the hollow ring. The sealing ring for watertightness is tightly contacted with a head portion of the fastening bolt and the fixing pressure member.

Description

Device for connecting pipe in manhole}

1 is an exploded perspective view illustrating a pipe connecting device of a manhole according to an embodiment of the present invention.

Figure 2 is a cross-sectional view showing a state in which the sewer pipe is connected to the manhole by the pipe connection device of the manhole according to an embodiment of the present invention.

3 and 4 are schematic cross-sectional views for explaining the operating state of the pipe connecting device according to an embodiment of the present invention.

5 is a perspective view of some components of a pipe connecting device of a manhole according to another embodiment of the present invention.

6 is a cross-sectional view showing an assembled state of FIG. 5 according to the present invention.

7 is a perspective view showing some components according to another embodiment of the present invention.

8 is a cross-sectional view showing a state in which the components of FIG. 7 are coupled according to the present invention.

9 is a perspective view showing a sewer pipe mounting structure in the form of a corrugated pipe as another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: hollow ring 11: insertion hole

12: fixed crimping member 13,15: fastening hole

14: nut pressing member 20: tightening bolt

21: nut 22: head

23: flange 24: groove

30: water milling 40, 41: tube

42: flange 45: contact member

46: plate

The present invention relates to a manhole pipe connection device for closely connecting the pipe connection port of the manhole and the pipe.

Although there are some differences in the conventional manhole, various types of pipe fittings are formed on one side of the side wall, and sewage is directly connected to the sewer pipe to the pipe fitting of the side wall, and water is installed in the manhole according to the purpose. The water supply pipe is connected through the manhole's pipeline connection. In the telecommunication manhole, the conduit or bundle of wires is introduced into the fuselage through the pipeline connection in the side wall.

Here, in the case of sewage, the connection structure between the side wall pipe connection port of the manhole and the sewer pipe is very important, and Korean Utility Model Application No. 2001-38961 discloses a hollow ring installed between the pipe connection port and the sewer pipe and expanding the hollow ring. Including a fastening ring, a bolt, and a nut, a structure is disclosed in which the outer diameter of the hollow ring is expanded to closely contact the pipe connection port of the manhole and the sewer pipe.

In addition, Japanese Utility Model Utility Model No. 1991-32273 discloses a structure in which a conduit is connected to a manhole by inflating a rubber ring with a bolt and a nut and bringing it into close contact with the manhole and conduit similarly to the above structure.

However, the conventional structure has a problem in that water leakage occurs between the bolt and the fastening ring in the connection between the pipe connection port and the sewer pipe.

In other words, the conventional structure has no means for maintaining airtightness between the bolt and the fastening ring, so that each bolt does not press the fastening ring with uniform pressure during construction, between the fastening ring and the head of the bolt. A gap is created and leakage occurs through this gap.

In particular, in the case of a large sewage pipe, such leakage phenomenon becomes more severe. When the diameter of the sewage pipe increases, the pipe connection port formed in the manhole wall also becomes large, and the connection device located in the pipe connection port has a curved shape according to the outer diameter of the manhole. Get drunk.

Accordingly, while the coupling ring of the connection device is bent, the head of the bolt coupled thereto is flat so that a gap may be generated between the coupling ring and the head of the bolt, thereby increasing the leak rate.

In addition, when the sewer pipe to be joined to the manhole is a corrugated pipe formed with uneven wrinkles on the surface, the hollow ring may not be in close contact with the surface of the uneven corrugated pipe and a gap may occur, thereby increasing the risk of leakage.

The present invention has been made to solve the problems of the prior art as described above, it is an object of the present invention to provide a pipe connecting device of the manhole to prevent leakage by increasing the airtightness of the fastening portion.

In addition, another object of the present invention is to provide a manhole pipe connection device capable of maintaining airtightness at the bolt head even if the tightening pressure between the bolts is uneven.

In addition, another object of the present invention is to provide a pipe connecting device of a manhole that can improve the workability for sewage pipes having wrinkles of irregularities on the surface thereof.

In order to achieve the object as described above, the present invention includes an elastic member positioned between the pipe connection port and the sewer pipe of the manhole, expansion means for expanding the outer diameter of the elastic member to close contact between the pipe connection port and the sewer pipe.

In the present invention, the elastic member is inserted into the outer end of the sewage pipe to form a ring located between the manhole duct connection and the sewer pipe, the inside can be made of a hollow ring of a structure that can be expanded to the outside of the via.

In addition, the expansion means is inserted into a fixed pressing member placed on one end of the hollow ring, a nut pressing member placed on the other end of the hollow ring, a hole through the fixed pressing member and the hollow ring and the nut pressing member Fastening bolts and nuts to be fastened, may be inserted into the tightening bolts may include a water-tight ring in close contact between the head of the tightening bolts and the fixed pressing member.

The nut pressing member is preferably provided with a plurality of spaced intervals.

The tightening bolt is preferably formed with a groove so that the water-tight ring is placed on the inner surface of the head in contact with the fixed pressing member.

In addition, the expansion means may include a tube for reducing the gap between the hole and the tightening bolt formed in the fixed pressing member is inserted into the tightening bolt.

In this case, the tube is preferably flanged to the outer surface to be in contact with the water milling.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is an exploded perspective view showing a manhole pipe connection device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a state in which the sewer pipe is connected to the manhole by the pipe connection device of the manhole according to the embodiment of the present invention. .

According to the above drawings, the present invention is located between the front end of the sewer pipe 60, the pipe connection port 51 and the sewer pipe 60 of the manhole 50 is located inside the hollow ring 10 and the hollow structure, and Expansion means for expanding the outer diameter of the hollow ring 10 to be in close contact between the pipe connection port 51 and the sewer pipe (60).

The hollow ring 10 is made of a material having its own elastic force, such as rubber, and may be in the form of a circular cross section, and preferably in the elliptical cross section so as to maximize the expansion rate of the outer surface.

The expansion means is inserted through the longitudinal direction of the sewage pipe 60 along the hollow ring 10 in the longitudinal direction of the insertion hole 11 formed on both ends of the hollow ring 10, and the front end of the hollow ring 10 and A fixed pressing member 12 having a corresponding ring shape and placed at an outer end thereof, a fastening hole 13 formed on a surface of the fixed pressing member 12 to correspond to an insertion hole 11 formed in the hollow ring, A plurality of nut crimping members 14 which are spaced at the inner end of the hollow ring 10, formed on the surface of the nut crimping member 14 to correspond to the insertion hole 11 of the hollow ring 10 Tightening through the fastening hole 15, the fastening hole 13 of the fixed pressing member 12 and the insertion hole 11 of the hollow ring 10 and the fastening hole 15 of the nut pressing member 14 A bolt 20, a nut 21 fastened to the tip of the tightening bolt 20, and fitted to the tightening bolt 20 to be used for the head of the tightening bolt 20 and the fixed pressing member 12. It includes a water milling 30 in close contact with it.

Accordingly, when the fastening bolt 20 is fastened to the nut 21, the hollow ring 10 is tightened inwardly by the fixed pressing member 12 and the nut pressing member 14, and the outer diameter thereof is expanded to drain the sewer pipe 60. ) And the pipe connector 51 of the manhole 50.

And the water-tight ring 30 is inserted into the tightening bolt 20 is in close contact between the head 22 and the fixed pressing member 12 of the tightening bolt 20 is fastened to the fastening hole of the fixed pressing member 12 ( It is possible to prevent the occurrence of leakage through 13).

According to the present embodiment, the tightening bolt 20 has a hexagonal head portion 22 formed therein, and the head portion 22 has a structure in which a flange 23 protrudes outward.

In addition, a groove 24 is formed on the bottom surface of the flange 23, that is, the surface in contact with the fixed pressing member 12 so that the water sealing ring 30 can be placed therein.

The height of the groove 24 is smaller than the cross-sectional diameter of the water milling ring 30 so that the watertight ring 30 is pressed between the fixed pressing member 12 and the bottom of the groove 24 when the tightening bolt 20 is fastened. To be possible.

The water milling ring 30 is a ring structure having a circular cross-sectional structure, and may be made of a rubber material having excellent compressive elasticity. The water-tight ring 30 is formed to be sufficiently larger than the diameter of the fastening hole 13 of the fixed pressing member 12 to tighten the bolt ( 20) It is a structure that does not escape to the fastening hole 13 in the fastening process.

On the other hand, looking at the fixed pressing member 12, the fixed pressing member 12 is placed on the outer end of the hollow ring 10 toward the outside of the manhole 50 and the shape of the front end of the hollow ring 10 It is made of a ring structure of a corresponding shape, and a fastening hole 13 is formed at a position corresponding to the insertion hole 11 formed in the hollow ring 10 so that the fastening bolt 20 can pass therethrough. .

And the nut pressing member 14 is placed on the inner end of the hollow ring 10 is separated into a plurality of spaced apart along the tip of the hollow ring 10.

In addition, the nut pressing member 14 has a fastening hole 15 formed at a position corresponding to the insertion hole 11 of the hollow ring 10 on the surface, in this embodiment, each nut pressing member 14 At least two fastening holes 15 are formed in the structure.

This is to prevent the nut pressing member 14 from turning along the direction of rotation of the tightening bolt 20 in the process of fastening the nut 21 in a state where the tightening bolt 20 is penetrated by the nut pressing member 14.

As shown in FIG. 2, the connecting device fills a gap between the inner diameter of the pipe connection port 51 of the manhole 50 and the outer diameter of the sewer pipe 60 to connect the sewer pipe 60 to the manhole 50. .

That is, the hollow ring 10 as the connecting device is prepared in a state in which the fastening bolt 20 is fastened to the nut 21 through the fixed pressing member 12 and the nut pressing member 14, and in this state, the sewer pipe It is fitted to the side of the (60) is located in the side conduit port 51 of the manhole (50).

In this state, the operator turns the tightening bolt 20 head 22 facing the manhole 50 by using a screwdriver or other jig to tighten the bolt 21 against the nut 21 located opposite the hollow ring 10. Tighten (20).

When the tightening bolt 20 is fastened to the nut 21 and continues tightening, the gap between the head 22 of the tightening bolt 20 and the nut 21 gradually decreases, and both ends of the hollow ring 10 are moved inward. Pressurized, the hollow ring 10 is both sides are inflated to the outside while both ends are pressed inward.

Eventually, both sides of the hollow ring 10 are pushed out and inflated to be in close contact between the outer surface of the sewer pipe 60 and the inner surface of the pipe connection port 51.

As the hollow ring 10 expands as described above, the gap between the pipe connection port 51 of the manhole 50 and the sewer pipe 60 is filled by the hollow ring 10 to secure the watertightness and at the same time firmly secure the sewer pipe 60. It becomes to be able to install in (50).

And the flange 23 formed in the head portion 22 of the tightening bolt 20 is in contact with the fixed pressing member 12, in this process the water-tight ring (set in the groove 24 of the flange 23) 30 is pressed while being compressed between the flange 23 and the fixed pressing member 12 to maintain the airtightness between the tightening bolt 20 and the fixed pressing member 12.

Therefore, even if it is possible to prevent the leakage that may occur through the fastening hole 13 of the insertion hole 11 and the fixed pressing member 12 of the hollow ring 10.

Herein, the operation of the water milling ring 30 will be described with reference to FIGS. 3 and 4.

In the process of expanding the hollow ring 10 by fastening each of the fastening bolts 20 and the nut fastened along the hollow ring 10, the tightening force is changed between neighboring tightening bolts 20 or the installation position of the hollow ring 10. If is not exactly the degree of expansion of the hollow ring 10 will be changed accordingly the gap or the horizontal degree between the two ends of the hollow ring 10 is distorted.

Accordingly, as shown in FIG. 3, the horizontal state of the flange 23 formed on the head 22 of the tightening bolt 20 and the fixed pressing member 12 in close contact with the hollow ring 10 is changed. A gap is generated, wherein the water-tight ring 30 compressed between the flange 23 and the fixed pressing member 12 is elastically tightly coupled between the flange 23 and the fixed pressing member 12 so that the two members are separated. It keeps the gap between them.

That is, the compressed water milling ring 30 is elastically restored to its original state, and thus can keep the gap between the two members.

In addition, as shown in FIG. 4, even when the clamping force between the adjacent tightening bolts 20 varies, the flange 23 of the tightening bolts 20 and the clamping member 12 are fixed. While the water milling ring 30 is compressed in close contact with each other, it is possible to prevent the leakage by preventing a gap generated between the two members.

5 and 6 show yet another embodiment of the present connection device.

In the following description, the same reference numerals are used to designate the same components and the description thereof is omitted.

According to the drawings, according to the present embodiment, the expansion means includes a tube 40 of a cylindrical shape that is fitted to the tightening bolt 20 and fitted to the fastening hole 13 of the fixed pressing member 12.

Accordingly, the clearance between the fastening hole 13 formed in the fixed pressing member 12 and the tightening bolt 20 is reduced by the tube 40, so that the fixed pressing member with the water sealing ring 30 interposed therebetween. In the process of fastening the tightening bolt 20 to 12) it is possible to prevent the water-tight ring 30 to escape to the fastening hole 13 of the fixed pressing member 12.

The tube 40 may be made of a conventional plastic material or rubber material, and is not particularly limited as long as the tube 40 may be inserted into the fastening bolt 20 and inserted into the fastening hole 13 of the fixed compression member 12.

6 shows the fastening bolts 13 and the hollow ring 10 of the fixed pressing member 12 with the tightening bolts 20 interposed between the watertight rings 30 while the tube 40 is fitted to the tightening bolts 20. The state of fastening penetrating through the insertion hole 11 of) is well illustrated.

As shown, the tube 40 reduces the gap between the fastening hole 13 and the fastening bolt 20 of the fixed crimping member 12 to some extent so that the water sealing ring 30 is fixed clamping member 12. Minimize the possibility of exiting the fastening hole (13).

And Figure 7 is another embodiment of the tube, according to the above drawings, the tube 41 is made of a cylindrical shape to be fitted to the tightening bolt 20 and the outer surface has a structure in which a flange 42 is formed have.

Accordingly, as shown in FIG. 8, when the tube 41 is inserted into the tightening bolt 20, the flange 42 of the tube 41 is formed with the flange 23 formed on the head 22 of the tightening bolt 20. It is placed between the fixed pressing member 12 and press-contacted between the flange 23 of the head 22 of the tightening bolt 20 and the fixed pressing member 12 like the water-tight ring 30.

Accordingly, while the tube 41 fills the gap between the fastening hole 13 and the fastening bolt 20 of the fixed pressing member 12, the water sealing ring 30 is prevented from escaping and the flange of the tube 41 is removed. 42 is to improve the watertightness between the fixed pressing member 12 and the flange 23 of the head 22 of the tightening bolt (20).

On the other hand, Figure 9 illustrates a connecting device in the case of using a corrugated pipe 70 is formed in the outer circumferential surface wrinkles as a sewer pipe connected to the manhole as another embodiment of the connecting device.

That is, the connecting device as mentioned above tightening bolt 20 as expansion means for close contact between the pipe connection port 51 and the sewer pipe 60 by expanding the outer diameter of the hollow ring 10 and the hollow ring 10. And a nut 21, and an adhesive member 45 attached to the contact portion of the hollow ring 10 of the corrugated pipe 70 to form a close contact between the hollow ring 10 and the outer surface of the corrugated pipe 70. ), And a strip-shaped plate member 46 in close contact with the outer side of the contact member 45 to cover the concave-convex wrinkles of the corrugated pipe 70.

In this embodiment, the contact member 45 is made of a rubber material, the plate member 46 is preferably made of a metal material.

In addition, the close contact member 45 is attached to the concave-convex portion of the outer circumferential surface of the corrugated pipe 70 along the fastening portion of the hollow ring 10, the shape is preferably made of a structure corresponding to the concave-convex shape of the corrugated pipe (70). It is not specifically limited.

In addition, the plate 46 is formed in a strip shape of a thin thickness and is formed to a width that is approximately to cover the close contact portion of the hollow ring 10 and the corrugated pipe (70).

Accordingly, when the fastening bolt 20 and the nut 21 are fastened to expand the hollow ring 10, the side surface of the hollow ring 10 is in close contact with the outer surface of the plate 46 and the plate and the hollow ring 10. Confidentiality.

And between the plate 46 and the corrugated pipe 70 in a state where airtightness is maintained by the close contact member 45, the hollow ring 10 has a plate material against the outer surface of the uneven corrugated corrugated pipe (70) 45) it can be stably adhered to each other to maintain confidentiality.

While the exemplary embodiments of the invention have been illustrated and described as described above, various modifications and other embodiments may be made by those skilled in the art. Such modifications and other embodiments will be considered and included in the appended claims without departing from the true spirit and scope of the invention.

According to the pipe connecting device of the manhole according to the present invention as described above, it is possible to prevent the leakage at the bolt fastening portion, the perfect construction is possible.

In addition, it is possible to reduce the risk of leakage due to the difference in the bolt fastening pressure, thereby reducing the effort and time required for the construction work, it is possible to reduce the cost.

In addition, it is possible to construct a sewage pipe of various structures.

Claims (6)

A hollow ring inserted into the sewer pipe and positioned between the pipe connection port of the manhole and the sewer pipe; and expansion means for expanding the outer diameter of the hollow ring to closely contact the pipe connection port with the sewer pipe. The expansion means has an insertion hole formed through both ends of the hollow ring, a ring-shaped corresponding to the front end of the hollow ring, a fixed pressing member placed at one end thereof, so as to correspond to the insertion hole formed in the hollow ring. A fastening hole formed on the surface of the fixed crimping member, a nut crimping member placed on the other end of the hollow ring, a fastening hole formed to correspond to an insertion hole of the hollow ring on the surface of the nut crimping member, and Tightening bolt penetrating the insertion hole of the fastening hole and the hollow ring and the fastening hole of the nut pressing member, the nut fastened to the end of the tightening bolt, the tightening bolt is fitted between the head and the fixed pressing member of the tightening bolt It includes a water milling, the tightening bolt is a manhole formed with a flange formed on the outside of the head and the groove on which the water milling ring is seated on the inner surface of the flange Port device. delete According to claim 1, wherein the nut pressing member is separated into a plurality of pipe connection device of the manhole arranged at intervals along the other end of the hollow ring. The method according to claim 1 or 3, The expansion means is a mandrel pipe connecting device including a tube that is fitted to the fastening hole is inserted into the tightening bolt. The method of claim 4, wherein The tube is a pipe connecting device of the manhole with a flange protruding in contact with the water milling on the outer surface. The method of claim 1, The sewer pipe is a corrugated pipe formed with wrinkles of irregularities on the surface, A contact member attached to the contact portion of the hollow ring of the corrugated pipe for close contact between the hollow ring and the outer surface of the corrugated pipe, and a band-shaped plate that is in close contact with the outside of the contact member to cover the uneven wrinkle of the corrugated pipe Manhole pipe fittings.

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