KR200235130Y1 - Synthetic Resin Double Wall Spiral Tube - Google Patents

Abstract

In this proposal, the inner wall is flexibly and elastically stretched to buffer the pressing action of the reinforcing steel plate, preventing the outer wall from being ruptured by the pressing force of the reinforcing steel plate together with the inner wall, thereby prolonging the service life. At the same time, a double-walled spiral pipe made of synthetic resin is provided that enables the original water-passing function to be faithfully performed.

The technical features of this paper are: The outer wall 10 spirally wound around the outer surface resin 12 in which the corrugations 11 are repeated, and the embedded steel 21 is embedded in the inner surface of the corrugations 11 of the outer wall 10. The inner wall body 20 is formed to secure the hollow portion A by smoothly joining the inner surface resin 22, and a reinforcing steel plate (H) is provided in the hollow portion A between the outer wall body 10 and the inner wall body 20. 30, which is built upright, the embedded hardware 21 of the inner wall body 20 is made of expanded metal 211 which is flexibly stretched by forming a plurality of expansion joints 211a, The expanded metals 9211 are embedded in the inner surface resin 22 directly below the reinforcing steel plate 30 so as to be embedded in one another so that the inner wall 20 buffers the pressing force of the reinforcing steel plate 30. It was given.

Description

Double wall spiral pipe made of synthetic resin

This study relates to a double wall spiral tube made by reinforcing steel plates in the hollow portion between inner and outer walls. In particular, it provides flexibility and elasticity to the inner wall so that the original water-passing function can be faithfully performed without being damaged. Note relates to synthetic double-walled spiral tubes.

In the past, synthetic resin tubes of various shapes and structures have been provided to withstand mechanically large loads. Among them, the most common of them is an outer wall body formed in a cylindrical cross-sectional shape by spirally winding an outer resin with repeated waveforms, and BACKGROUND ART A double wall spiral tube made of a synthetic resin is known that is formed as an inner wall formed by smoothly joining an inner surface resin in which buried hardware is embedded to the inner surface of the corrugations of the outer wall to secure a hollow portion.

In such a double wall spiral tube made of synthetic resin, the outer wall having the corrugation functions as a structural part that bears external loads or applied earth pressure, and the inner wall smoothly formed on the inner wall of the outer wall smoothes water or sewage. As it carries out the function of passing water, it has the water flow capacity along with structural strength corresponding to earth pressure and load applied from the outside.

However, when the double wall spiral pipe made of sediment resin is buried under the ground, when the local earth pressure or load is intensively applied from the outside, the corrugation of the outer wall is pressed and partially deformed or damaged, so that the place is subjected to large earth pressure. There was a defect that could not be used.

In order to solve the above problems, Korean Utility Model Publication No. 94-8047 (1994.4.18), as shown in Fig. 1A, covers a synthetic resin film (2) (3) on both sides of a metal band (1). Wind the basic pipe as a strong band (4), on the upper surface A female synthetic resin extruded body 8 is wound up, and a flat body 7 having the left and right synthetic resin layers 6 and 6 'of the metal core 5 deposited thereon is erected so as to support the ceiling thereof, and the synthetic resin band 11 )in A synthetic resin spiral tube with a metal core as a technical subject is formed by enclosing the left and right edges 9 and 10 of the male synthetic resin extruded body 8 (hereinafter, referred to as synthetic resin extruded body). It is open.

In this way, the synthetic resin spiral tube having a metal core is wound on the flat body 7 by winding a synthetic resin extruding agent 8 on the upper surface of the basic tube wound as a strong band 4, and the positive edge of the synthetic resin extruded body 8 ( 9) (10) is wrapped in a synthetic band 11 and integrated with the base tube, thereby supporting the synthetic resin extruded body 8, which is directly affected by earth pressure or load applied from the outside, as a flat body 7, It is true that it has a bracket that prevents deformation or breakage.

However, in the conventional spiral tube made of synthetic resin with a metal core, the flat body 7 supporting the ceiling of the synthetic resin extruded body 8 is relatively weak compared to the basic tube made of the strong band 4. Resulted in a dysfunction that would destroy). In other words, when the resin extruded body 8 is subjected to local earth pressure and load in the state buried in the ground as shown in Fig. 1B, the flat body 7 supporting the synthetic resin extruded body 8 is strong. The intermediate portion of the resin extruded body 8 having a relatively weak cross section is tensioned above the threshold point by the reaction force of the base tube made of a rigidly formed band 4, and eventually the middle portion of the resin extruded body 8 is ruptured. There was a problem caused.

Of course, when manufacturing a synthetic resin spiral tube having such a metal core, a method of forming a thick end face of the synthetic resin extruded body 8 so as not to rupture easily can be proposed, in this case, the flat body 7 is not easily ruptured. Since it serves as a lever to open the gap between the synthetic resin extruded body (8) and the base band wound as the strong band (4), the joint of the base tube and synthetic resin extruded body (8) wound as the strong band (4) It was accompanied by another problem of excitement and separation.

This proposal is designed to actively buffer the inner wall against the pressing action of the reinforcing steel plate, and prevents the inner and outer wall from being damaged by the reinforcing steel plate that flows in the hollow part under load or impact applied from the outside. The purpose is to provide a high quality synthetic double wall spiral tube that can maintain the original water supply function.

Figure 1a is a partially cutaway front view illustrating a conventional double wall spiral tube

Figure 1b is a partial cross-sectional view illustrating a state in which the inner wall of the conventional double-walled spiral pipe rupture

Figure 2 is a partially cutaway front view of the double wall spiral tube of the present invention

Figure 3 is a partial cross-sectional view showing the operation of the dual wall spiral tube

Figure 4 shows a buried hardware embedded in the inner wall of the double wall spiral tube of the present invention

5 is a partial cross-sectional view showing a double wall spiral tube according to a modification of the present invention;

FIG. 6 illustrates a buried hardware embedded in an inner wall of the double wall spiral tube of FIG.

FIG. 7 is a diagram illustrating a double wall spiral tube formed by installing a deformed reinforcing steel plate in a hollow portion between inner and outer walls.

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

10: outer wall 11: waveform

12: outer resin 20: inner wall

21: landfill 211: expanded metal

211a: expansion joint 212: unit wire

30: reinforcing steel plate A: hollow part

The outer wall body 10 is formed in a spiral cross-section by spirally winding the outer surface resin 12 in which the high-fidelity waveforms 11 are repeated, and the embedded steel 21 is formed on the inner surface of the waveforms 11 of the outer wall body 10. Reinforce the inner wall body 20 formed to secure the hollow part A by smoothly joining the embedded inner surface resin 22 and the hollow part A between the outer wall body 10 and the inner wall body 20. In the point that the iron plate 30 was built upright, the technical concept is the same as the conventional one.

As shown in Figs. 2 and 4, the double wall spiral tube made of synthetic resin of the present invention is an expandable flexible member 21 of the inner wall 20, in which a plurality of expansion joints 211a are formed and flexibly expanded. Made of metal 211, the expanded metal 211 is embedded in the inner surface resin 22 directly below the reinforcing steel plate 30 so as to be connected to each other so that the inner metal body 20 is connected to the reinforcing steel plate. It is characterized by the technical construction to buffer the pressing force of (30).

The synthetic double wall spiral tube of the present invention configured as described above has an expanded metal 211 having elastic joints 211 a formed in the inner surface resin 22 constituting the inner wall 20 with respect to the lower portion of the reinforced steel plate 30. They are provided with a buried iron 21 to be superimposed on each other, it is configured to buffer the pressing force of the reinforcing steel plate 30 by giving flexibility and elasticity to the inner wall (20).

Therefore, the present proposal is that when the corrugation 11 of the outer wall body 10 which is subjected to earth pressure and load from the outside is pressed and the reinforcing steel plate 30 located in the hollow portion A presses the inner wall body 20, the inner wall body (20) is flexible and elastically stretched to buffer the pressing action of the reinforcing steel plate 30, not only to extend the service life by preventing the outer wall 10 to rupture together with the inner wall 20, the original It will have the advantage of being able to faithfully perform the water supply function of.

Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail as follows.

The outer wall 10 is a component that performs the function of wrapping the outer surface of the inner wall 20 to protect the inner wall from the load or impact.

The outer wall 10 is spiral wound around the outer surface resin 12 in which the corrugations 11 are repeated to be made into a cylindrical cross-sectional shape. The waveforms 11 repeatedly formed on the outer wall 10 help to effectively protect the inner wall 20 from a load or an impact.

The inner wall 20 is integrally formed on the inner surface of the outer wall 10 to perform a function of smoothly passing water or sewage.

The inner wall 20 has an embedded metal 21 in which the expanded metal 211 having elastic joints 211a formed therein is overlapped with each other in the inner surface resin 22 directly below the reinforcing steel plate 30. This is important. The reason is to impart flexibility and elasticity to the inner wall body 20 so as to effectively buffer the pressing action force of the reinforcing steel plate 30.

5 and 6 show a modified example of the present design, wherein the embedded steel 21 of the inner wall body 20 is formed of unit wires 211 formed in a cylindrical shape arranged in a zigzag at regular intervals, and the unit thereof. The steel wires 212 are embedded in the inner surface resin 22 directly below the reinforcing steel plate 30 so as to be connected to each other so as to be connected to each other, thereby providing flexibility and elasticity to the inner wall 20 to the pressing force of the reinforcing steel plate 30. It is to buffer effectively.

The reinforcing steel plates 30 are installed in the hollow portion A between the inner wall body 20 and the outer wall body 10 to perform a function of supporting the waveforms 11 of the outer wall body 10.

The reinforcing iron plate 30 is made of flat iron to be installed to be upright in the hollow portion (A) between the inner wall 20 and the outer wall (10).

Here, the reinforcing steel plate 30 is made to have a polygonal cross-sectional shape, as shown in Figure 7, to increase the contact area that is in contact with the inner wall 20 and the outer wall 10, to the inner, outer wall It is desirable to alleviate the pressing action applied.

In addition, the reinforcing steel plate 30 is made to have a closed ring on both sides of the lower slope inclined downward from the upper center, as shown in Figure 8, the contact area which is in contact with the inner wall body 20 and the outer wall body 10 It is to be noted that the pressure may be increased to alleviate the pressing force applied to the inner and outer walls thereof.

As discussed above, this proposal is configured to buffer the pressing force of the reinforcing steel plate by flexibly and elastically stretching the inner wall, thereby preventing the outer wall from being ruptured by the pressing force of the reinforcing steel plate together with the inner wall. Therefore, it will have a useful effect such as extending the service life, and at the same time be able to faithfully carry out the original water supply function.

Claims (2)

The outer wall 10 spirally wound around the outer surface resin 12 in which the corrugations 11 are repeated, and the embedded steel 21 is embedded in the inner surface of the corrugations 11 of the outer wall 10. The inner wall body 20 is formed to secure the hollow portion A by smoothly joining the inner surface resin 22, and a reinforcing steel plate (H) is provided in the hollow portion A between the outer wall body 10 and the inner wall body 20. 30) in the upright position, The embedded steel 21 of the inner wall 20 is made of expanded metals 211 that are flexibly stretched by forming a plurality of expansion joints 211a, and the expanded metals 211 are reinforced steel plates. (30) Double wall spirals made of synthetic resin, characterized in that the inner wall 20 is buried so as to be connected to each other in the lower surface of the inner surface of the lower surface 22 so as to buffer the pressing force of the reinforcing steel plate (30). tube. According to claim 1, wherein the embedded steel 21 of the inner wall body 20 is arranged in a zigzag at regular intervals made of unit wires 212 formed in a cylindrical shape, the unit wires 212 are the reinforcing steel plate (30) A double-walled spiral pipe made of synthetic resin, characterized in that it is embedded in the inner resin 22 directly below and embedded so as to be connected to each other.