KR200362280Y1 - jointing apparatus of hume pipes - Google Patents

Abstract

According to the present invention, the frame member for wrapping a connecting portion of the corrugated pipes to be interconnected in a predetermined width; An elastic member installed between the inner circumferential surface of the frame member and the outer circumferential surface of the corrugated pipe and having an injection portion applied from the outside, the expansion member being expanded by the pressure of the fluid injected through the injection portion to connect the corrugated pipe by pressing the outer circumferential surface of the frame member and the corrugated pipe; Is provided.

Description

Joint apparatus of hume pipes

The present invention relates to a corrugated pipe connecting device, and more particularly, to connect the corrugated pipe to provide a close contact with the connecting portion of the corrugated pipe by applying pressure to the member for connecting it to the outer circumferential surface of the corrugated pipe connecting portion and maintaining airtightness. Relates to a device.

Corrugated steel pipes, which are generally corrugated pipes, are widely employed as hollow formwork or construction chutes in the field of drainage of sewage and wastewater in civil engineering, water supply of domestic or industrial water, and construction. In addition, recently, due to increased labor shortages and increased awareness of cost and environmental problems, it is an excellent piping material that provides high external pressure strength, structural stability, durability, economy and constructability as a substitute for existing concrete drain pipes. It is attracting attention.

The corrugated steel pipe has a relatively large diameter and an appropriate length, and is constructed by connecting a plurality of pipes after being transported to an installation site. In this construction process, each end of the two corrugated steel pipes are processed and then connected by using a frame and rubber in the state of being interlocked or butted together, and the LPY connection is manufactured by welding, which requires a lot of work and poor workability. There is this. In addition, there is a problem that the life of the corrugated steel pipe is relatively short due to damage to the zinc coating film coated on the outer circumferential surface of the corrugated steel pipe to prevent corrosion during welding and processing of the corrugated steel pipe.

In view of this problem, Korean Utility Model Publication No. 95-30884 discloses a connection device for drainage pipes. The disclosed connecting device is provided with a waterproof sheet and a flexible band that is naturally contracted and hardened on the connection portion of the drainage pipe, and fasteners surrounding the flexible band.

The connecting device has a structure in which the flexible band is pressurized and connected to the drainage pipe by using a fastener, but the drainage pipe has a wave shape, and thus it is difficult to provide a pressing force by the softband alone.

Korean Utility Model Registration No. 0339759 discloses a corrugated steel pipe connector. The corrugated steel pipe connector includes a rubber packing ring fitted to each of the corrugated steel pipes on both sides to be connected, engineering body joint pipe bodies supporting the rubber packing rings, and a fixing cover connecting the rubber packing pipes.

Patent Utility Model 0344705 discloses a corrugated pipe connecting device. The corrugated pipe connecting device is formed at the end of the corrugated pipe in contact with a certain section of the mountain and valleys to form a contour to form a pressed portion, and is installed on the inside of the connecting body to be in close contact with the pressed portion of the corrugated pipe, the cross section is bent Cylindrical tightening to form a ring-shaped crimping ring, and to form a corrugated surface on the inner circumferential surface to be in close contact with the pressing portion of the corrugated pipe to tighten the tightening nut on the connecting body while pressing the pressed portion of the corrugated pipe to the crimping ring. It includes a ring.

Publication 2003-0075505 discloses a fume pipe connection. The disclosed connector has a protruding portion forming an unevenness so that the inner side has a shape of a fume tube, and the outer side is formed in a straight shape, and has a constitution that connects the fume tube pipe while the shrinking stone is inserted and heated and contracted along the protruding portion.

As described above, the connecting device for connecting corrugated pipes, such as corrugated steel pipes and fume pipes, provides a bonding force and adhesion by simply pressing a soft packing on the outer circumferential surface, thereby providing uniform adhesion to the valleys and hills having the bend on the outer circumferential surface. none. In addition, since the packing is inserted into the interconnected corrugated pipe and pressurized, the workability is not good. In addition, when the coupling structure between the connection parts is not strong, the seizure due to the ground change, vibration, expansion and contraction by heat, high water pressure and water hammer, etc. are easily released when pressurization or twisting in the longitudinal direction occurs. In addition, there is a problem that the leak occurs because the corrugated pipe of the specific portion is crushed when the soft packing member is forcibly pressed using the fastener.

The present invention is to solve the problems as described above, so that the uniform pressure can be applied to the outer circumferential surface of the corrugated pipe to be connected to increase the bonding strength and adhesion, and can prevent the plating layer of the corrugated pipe from being damaged during bonding The purpose is to provide a corrugated pipe connecting device.

Another object of the present invention is easy to install and fundamentally solve the cause of corrosion due to the coupling, and easy to maintain, and the connection part in the ground can prevent the damage to the connection area by bending in response to the ground subsidence To provide a corrugated pipe connection.

Another object of the present invention is to provide a corrugated pipe connecting device that can provide a uniform airtight force regardless of the shape of the corrugation formed on the outer peripheral surface of the corrugated pipe.

1 is a partial ablation perspective view of the corrugated pipe connecting device according to the present invention

Figure 2 is an exploded perspective view showing another embodiment of the corrugated pipe connecting device,

3 is a perspective view showing another embodiment of the frame member;

4 is a cross-sectional view showing a state in which corrugated pipes are connected by a corrugated pipe connecting device;

Figure 5 is a cross-sectional view showing the emerging member of the corrugated pipe connecting apparatus according to the present invention,

6 is a partially cutaway perspective view of the elastic member of the corrugated pipe connecting device.

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

10; Crimp Tube Connector

20; frame member

30; stretch member

50; Pressure

Corrugated pipe connection device of the present invention for achieving the above object,

A frame member for wrapping a connection portion of the corrugated pipes connected to each other with a predetermined width;

It is installed between the inner circumferential surface of the frame member and the outer circumferential surface of the corrugated pipe, having an injection portion, the expansion member is expanded by the pressure of the pressure material injected through the injection portion to press the outer peripheral surface of the frame member and the corrugated pipe to connect the corrugated pipe; It is characterized by what was included.

In the present invention, the frame member is provided with a band member having a predetermined width surrounding the connecting portion of the corrugated pipe, and a connecting means for connecting both ends of the band member. The frame member may be formed of a band having a strong elastic force.

The elastic member may be formed in a band shape having a predetermined width, and both edges thereof may be coupled by fixing members along both edges of the frame member to form a closed space connected to the injection portion. It may further include a rubber tube and a net surrounding the rubber tube. And the inside of the elastic member may be a spongy body such as a mesh or cotton.

Meanwhile, the pressurizing material may be cured in a vacuum state and may be formed by mixing a foaming material with urethane rubber or F.R.P, and may be made of a soft synthetic resin material.

Hereinafter, a preferred embodiment of the corrugated pipe connecting device according to the present invention with reference to the accompanying drawings in detail as follows.

The corrugated pipe connecting device according to the present invention is to press the connecting portion of the corrugated pipe by using a stretchable member that is expanded by injecting a pressing material into the outer circumferential surface of the connecting portion, an embodiment thereof is shown in FIG. 1.

Referring to the drawings, the corrugated pipe connecting device 10 is to interconnect corrugated pipes such as corrugated steel pipes, synthetic resin pipes, etc., the end of which the outer circumferential surface of the connection portion of the corrugated pipe (100, 200) in close contact with each other It is installed between the frame member 20 wrapped with a width, the inner peripheral surface of the frame member 20 and the outer peripheral surface of the corrugated pipe (100, 200), has an injection portion 38 and the pressure injected through the injection portion 38 Expanded by the pressure of the ash 50 includes a stretchable member 30 for connecting the corrugated pipe (100, 200) by pressing the outer peripheral surface of the frame member 20 and the corrugated pipe (100, 200).

The corrugated pipe connecting device 10 according to the present invention configured as described above will be described in detail for each component as follows.

The frame member 20 surrounds a predetermined width of the outer circumferential surface of the connection portion of the corrugated pipes 100 and 200 and is formed to have a diameter relatively larger than that of the corrugated pipes 100 and 200. The frame member 20 is made of a tubular body consisting of a single body as shown in Figure 1 or as shown in Figure 2 bands having a predetermined width surrounding the connecting portion of the corrugated pipes (100, 200) Members 23 and fastening means 24 for connecting both ends of the band members 23. The fastening means 24 is the end of the band member 23 is bent to form a coupling portion (24a, 24b), the coupling portion (24a, 24b) is coupled by a fastening member such as bolts and nuts, etc. do. The fastening member is not limited to the bolt and the nut, and any structure can be used as long as the coupling member can be connected to each other.

Another embodiment of the frame member 20 is a longitudinal direction thereof, that is, corrugated pipe 100 (200) on the outer circumferential surface of the elastic member 30 installed on the connection portion of the corrugated pipe (100, 200) as shown in FIG. ) Is installed in the longitudinal direction, and the auxiliary frame 25 spaced apart from each other by a predetermined interval, and the tightening surrounding the auxiliary frame 25 and the elastic member may be composed of a plurality of bands (26). The auxiliary frame 25 may be supported by the band. The frame member 20 is not limited to the above-described embodiment, and may be any structure as long as the frame member 20 can wrap and support the elastic member 30 that interconnects the corrugated pipe. The frame member may include a metal plate, a synthetic resin plate, a rubber band, a band using waste tires, and the like, but is not limited thereto. As shown in FIG. 4, an edge portion of the frame member 20 extends inwardly along the edge of the frame member 20 to prevent the elastic member 30 from protruding to the outside of the frame member 20. Can be installed.

As shown in FIGS. 1 and 5, the elastic member 30 is formed of a tube-type main body 31 having a sealed inner space substantially the same as or narrower than the width of the frame member 20. The elastic member may be formed of a rubber material or a synthetic resin material having elasticity. And at least one side of the inner or outer circumferential surface of the main body 31 of the elastic member 30 is provided with a net 32 made of synthetic resin or metal wire to limit the expansion of the elastic member 30. In addition, the inner surface of the elastic member 30 in contact with the connection portion of the corrugated pipe (100, 200) is further provided with an adhesive layer (33) made of soft raw rubber, etc. having good adhesion, and the inner space of the main body 31 There may be installed a spongy body 35 such as a mesh or cotton to increase the durability of the pressure material (50).

When the frame member 20 is composed of a band member 23 and has a structure fastened by a fastening means, the elastic member 20 may have a band shape as shown in FIG. 2. In this case, it is preferable to maintain the airtightness of the corrugated pipe (100, 200) is connected to both ends overlap. In addition, the elastic member 30 may be formed by supporting the sheet member along the edges of both sides of the frame member 20 in a band shape having a predetermined width as shown in FIG. 6.

On the other hand, the expansion and contraction member 30 configured as described above in the injection portion 38 for injecting the pressing material 50, and when the injection of the pressing material 50 through the injection portion 38 Discharge part 39 for discharging the gas of the inner space of the is installed. The injection part 38 may include a connection pipe 38a connected to the inner space of the expansion and contraction member 30, and a valve 38b installed on the connection pipe 38a, and the discharge part 39. It may be composed of a discharge pipe (39a) is connected to the inner space of the elastic member 30, the valve 39b is installed in the discharge pipe (39a).

In addition, the pressure member 50 injected into the inner space of the elastic member 30 is made of at least one of urethane rubber, F.R.P, and gel-like synthetic resin cured in a vacuum state, and should be able to be cured in a vacuum state. In addition, the pressurizing material 50 may be formed by mixing urethane or F.R.P with the foam. The pressurizing material 50 is not limited to the above-described embodiment and may be any structure as long as it is injected into the inner space of the elastic member 30 to expand or expand the elastic member and to harden it. For example, the pressurizing material may be made of air, water, oil, a gel-like synthetic resin, a bond in which waste tire powder is mixed.

Referring to the operation of the corrugated pipe connecting device configured as described above are as follows.

In order to interconnect the corrugated pipe (100, 200) by using the corrugated pipe connecting device 10, as shown in Figure 1 and to place the frame member 20 on the connection portion of the corrugated pipe (100, 200) and In addition, the elastic member 30 is positioned on the outer circumferential surface between the frame member 20 and the connection portion between the corrugated pipe 100 and 200. In this case, when the frame member 20 is formed in a cylindrical shape, it is preferable that the frame member 20 is inserted into the corrugated pipe on one side before butting the connecting portions of the corrugated pipes 100 and moved when the corrugated pipe is butted. 2 and 3, when the band member is formed, the frame member 20 can be installed at the connection portion of the corrugated pipe by fastening by using the fastening means after the butt.

In this state, the valves 38b and 39b of the injection part 38 and the discharge part 39 are opened, and the pressurizing material 50 is injected through the connection pipe 38a of the injection part 38. As the pressurizing material 50 is injected as described above, the valve 39b of the discharge port 39 is closed at the time when the discharge of the gas inside is completed through the discharge part 39. In this state, continuously injecting the pressurizing material 50 through the injection part 38 causes the expansion and contraction member 30 to expand and press the outer peripheral surface of the connection part of the corrugated pipe 100 and 200. In this process, since it is pressed while deforming along the outer circumferential surface of the corrugated pipe (100, 200) of the elastic member 30, it is in close contact with the connecting portion irrespective of the external shape of the corrugated pipe (100, 200). In particular, since the adhesion layer 33 is formed on the inner circumferential surface of the elastic member 30 in contact with the connection portion, it is possible to increase the adhesion of the corrugated pipe (100, 200) pipe. In particular, the outer circumferential surface of the elastic member 30 is supported by the frame member 20, so the expansion force acts as the outer circumferential surface of the corrugated pipe 100, 200, thereby increasing the pressing force to the connection portion of the corrugated pipe 100, 200. The outer circumferential surface of the elastic member 30 is provided with a net 32 so that the elastic member 30 can be prevented from bursting under high pressure.

When the expansion member 30 is expanded by the injection of the pressing member 50 to the expansion member 30 as described above, when sufficient adhesion is applied to the connection portions of the corrugated pipes 100 and 200, the valve of the injection hole 38 ( Lock 39b). In this state, the pressing material 50 injected into the stretchable member 30 is cured to harden while maintaining the outer circumferential surface shape of the connection portion of the corrugated pipe 100 and 200 to interconnect the corrugated pipe. In particular, since the spongy body 35 is injected into the stretchable member, the spongy body 35 is embedded in the pressurizing member 50, thereby increasing the durability of the hardened pressurizing material.

As described above, the connecting device of the corrugated pipe according to the present invention can be connected regardless of the outer circumferential surface of the corrugated pipe, and there is no need to separately process the connecting portion of the corrugated pipe, thereby preventing the plating layer from being damaged as in the prior art.

In addition, it is easy to maintain and maintain the connection of the connection portion by hardening by injecting a pressing material into the elastic member, it is possible to increase the reliability of the corrugated pipe.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (9)

A frame member 20 surrounding the connection portions of the corrugated pipes 100 and 200 connected to each other with a predetermined width; The pressure of the pressure member 50 is installed between the inner circumferential surface of the frame member 20 and the outer circumferential surface of the corrugated pipes 100 and 200, and has an injection portion 38 applied from the outside and injected through the injection portion 38. Corrugated pipe connecting apparatus characterized in that it comprises a; expandable by the expansion member 30 for connecting the corrugated pipe (100,200) by being pressed by the outer peripheral surface of the frame member 20 and the corrugated pipe (100,200) . The method of claim 1, The frame member 20 surrounds the connection portion of the corrugated pipe 100 and 200 and has at least one band member 23 having a predetermined width and at least one fastening means connecting the ends of the band member 23. Corrugated pipe connector, characterized in that it comprises a. The method of claim 1, The frame member 20 includes a plurality of auxiliary frames 25 installed in the circumferential direction of the elastic member 30, and at least one band surrounding the auxiliary frames 25 and the elastic member 30 ( Corrugated pipe connecting device characterized in that it comprises a 26). The method of claim 1, The stretching member 30 is a corrugated pipe connecting device, characterized in that consisting of a tube. The method of claim 1, The elastic member 30 is formed in a band shape having a predetermined width and is coupled by the fixing member 37 along both edges of the frame member 20 to form a closed space connected to the injection part 38. Corrugated pipe connector, characterized in that one. The method of claim 1, The stretching member 20 is a corrugated pipe connecting device, characterized in that it comprises a rubber tube and a net 32 surrounding the rubber tube. The method of claim 6, Corrugated pipe connecting device, characterized in that the inner surface of the elastic member 20 is provided with a net or sponge. The method of claim 1, The pressurizing material 50 is to be cured in a vacuum state, corrugated pipe connecting device, characterized in that made of one of the bonds, urethane rubber, F.R.P, soft synthetic resin, waste tire powder is mixed. The method of claim 1, The pressurizing material 50 is a corrugated pipe connecting device, characterized in that made of a synthetic resin material on the gel.