KR101737413B1 - Common duct pipe with steel pipe with epoxy resin - Google Patents

Abstract

The present invention relates to a utility-pipe conduit using a steel pipe having an epoxy resin layer and, more specifically, to a utility-pipe conduit using a steel pipe having an epoxy resin layer configured to coat an epoxy coating layer, an adhesive resin layer, and a polyethylene coating layer on the outer surface of a metal layer, and to construct a utility-pipe conduit, through which various electric and communication cables and an upper and a drain pipe are passed, in an inner diameter of the steel pipe made of a powder epoxy resin coating layer on the inner surface of the metal layer, and enable the passage to be safely and freely controlled and the height of the plurality of compartments to be adjusted.

Description

{Common duct pipe with steel pipe with epoxy resin}

The present invention relates to a tube joint tube using a steel tube having an epoxy resin layer, and more particularly, to an epoxy resin coating layer, an adhesive resin layer and a polyethylene coating layer on the outer surface of the metal layer and a powder epoxy resin coating layer on the inner surface of the metal layer A steel pipe having an epoxy resin layer capable of installing various electric and telecommunication cables and a cavity through which the upper and the sewer pipes are passed, It relates to a collective housing complex.

A utility-pipe conduit is an underground tunnel that accommodates various telecommunication cables, water pipes, sewage pipes, and gas pipes. It is also called a common ditch. In order to install the joint, the above-mentioned various cables, water supply and drainage pipes, gas pipes,

It is designed to beautify the aesthetics of the city, to preserve the road structure, and to obtain the effect of smooth communication of traffic by accommodating in the installed structure.

In such a space, a construction for accommodating pipes of various cables (transmission and distribution, communication, etc.), a tower, a sewer pipe, or a gas pipe is applied.

In the past, construction of the culvert has been carried out by pouring and curing the concrete in the field. However, in order to shorten the construction time and economically construct the culvert, A method of completing the construction by assembling the precast cage carried is widely used.

Since the precast culter has a high construction speed and can be backed up immediately after construction, it can solve problems such as civil inconveniences caused by construction, obstruction of traffic flow, waste of time unnecessarily, and therefore is effective for complicated urban construction, Since it is produced at the factory by management, it has various advantages such that the quality is uniform and high-strength concrete is used, thereby improving the watertightness and durability of the structure.

The construction method using the precast culler as described above will be described in more detail. After the trencher and the foundation grounding work are performed at the place where the precast culter is to be installed, the foundation concrete is laid. When the laid foundation concrete is cured, the precast culvert is transported to the site and assembled to complete the construction.

However, the above-mentioned conventional construction method has a problem that the cost and the construction period are increased because the foundation concrete should be laid and cured before the precast culler is assembled. As an example, it is required to install molds for casting foundation concrete. Since the production of such formwork is usually done by woodworking work, carpentry is required separately from assembly of precast culler for construction work, In addition, since it takes more time to pour concrete and curing, it has a disadvantage that rapid construction is difficult to proceed.

Furthermore, as described above, since the conventional precast culter is directly placed on the cured foundation concrete, the pre-cast culvert is used to form a cavity in which a communication cable and a power cable are installed. It is difficult to form a waterproof layer therebetween. As a result, there is a problem that water in the ground flows into the inside of the culvert and damages a communication cable or a power cable.

Meanwhile, although a corrugated pipe using a corrugated steel pipe having a corrugated shape has been proposed without using the precast culler as described above, the corrugated steel pipe has formed a corrugation to improve rigidity. However, There is a problem that the stiffness that satisfies the condition is not provided and the rigidity is not ensured and the stability is poor. In order to prevent leakage of water from the jointed portion due to the overlapping of the corrugated steel pipes at regular intervals, There is a risk of leakage due to a problem of providing a coupling structure for watertightness maintenance using a plurality of watertight containers.

Patent Document 1. Patent Registration No. 0743369 (registered on July 20, 2007) Patent Document 2. Patent Publication No. 2003-0001137 (published on June, 2003) Patent Document 3. Patent Registration No. 0422247 (registered on Feb. 27, 2004) Patent Document 4. Patent Publication No. 2003-0001149 (published on Jan. 01, 2003)

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a hollow pipe using a steel pipe which is coated with an inner surface and an outer surface of a steel pipe made of a metal layer to ensure durability and rigidity.

Another object of the present invention is to allow moisture to be discharged downward by a natural gradient of the bottom, and freely pass through the grating provided on the lower side.

Another object of the present invention is to freely adjust and install various fluid spaces partitioned in both sides, electric and communication spaces, and other spaces.

Another object of the present invention is to provide watertightness of a steel pipe by one-touch fitting of a steel pipe by providing packing at one end of the steel pipe.

The present invention provides a steel pipe comprising an epoxy coating layer, an adhesive resin layer, and a polyethylene fiber coating layer formed on an outer surface of a metal layer, and a powder epoxy coating layer on the inner surface of the metal layer,
A shot blasting impeller having a size of a shot ball of 0.8 to 1.5 mm and capable of rotating at a speed of 1200 to 1800 rpm when the shot ball is rotationally projected from the shot blasting impeller and at a center of an inner diameter of a steel pipe controlled at a line speed of 2 to 5 mpm Forming a passage space in which the grating is installed on the floor,
A frame which divides the inside of the frame connecting device for installing the frame frame in the frame fixing hole of the frame fixing frame provided at the front end of the tube support on both sides of the above passage space from the lower side into the auxiliary space and the fluid space, And a tube fixing device for fixing a tube installed on the upper side of the tube support;
Wherein the frame connecting device comprises a frame connecting rod formed with a frame connecting hole for connecting with a frame fixing bolt to a frame fixing hole of the frame fixing frame, and a frame, which is also formed on the upper side so that the frame connecting portion is engaged with the upper and lower sides, Including a frame,
In the passage space, water is naturally collected at the lower center of the steel pipe, and a drainage space where natural drainage is performed downward according to a natural gradient is formed, and in the form of a square or a rectangle on the upper side of the drainage space between the column frames And a horizontal bar and a vertical bar are connected to the inside of the quadrangle to provide a grating for the operator to step on and pass.

The present invention provides a joint using a steel pipe in which an outer surface of a steel pipe made of a metal layer is coated with an epoxy coating layer, an adhesive resin layer and a polyethylene fiber coating layer and an inner surface is coated with a powder epoxy coating layer to ensure durability and rigidity .

In the present invention, a steel pipe is formed in a cylindrical shape so that water generated inside can be collected at the bottom, and a steel pipe embedded in the ground is installed as a natural gradient so that moisture collected at the bottom flows naturally and discharged. So that the worker and the inspector can freely pass through it, so that installation and management can be effectively performed.

The present invention can freely adjust and install various fluid spaces, electric and communication spaces, and other spaces divided on both sides through a height adjusting device and a frame connecting device, and to connect one end of the steel pipe in one touch So that the watertightness can be stably maintained.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of an installation state showing a preferred embodiment of the present invention
2 is a side sectional view showing an installation state of the present invention
Figure 3 is a sectional view of the height adjustment device of the present invention
Fig. 4 is a section view of a combined state of the height adjusting device of the present invention
5 is a perspective view of a main portion of the height adjusting device of the present invention;
6 is a plan view of a main part of the height adjusting device of the present invention
Fig. 7 is a front view of the upper and lower connection states of the frame connecting device of the present invention
8 is a sectional view of the frame connecting device of the present invention
Fig. 9 is a sectional view of the coupling state of the frame connecting device of the present invention
Fig. 10 is a perspective view of a portion of the blank for the frame connecting device of the present invention
11 is a plan sectional view of a main part of the frame connecting device of the present invention
12 is a sectional view of the installation state of the lower side of the passage space of the present invention
Fig. 13 is a plan view of the installation state of the lower side of the traveling space of the present invention
14 is an enlarged cross-sectional view of a main portion of the steel pipe according to the present invention
15 is a sectional view of the steel pipe connecting apparatus according to the present invention
16 is a sectional view of the steel pipe connecting apparatus according to the present invention
Figure 17 is a perspective view of the tube fastener of the present invention,
Fig. 18 is a sectional view of an installation state of the tube fixing device of the present invention
19 is a block diagram showing a manufacturing process for a pipe joint tube joint pipe of the present invention

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a sectional view of an installation state of a preferred embodiment of the present invention, and FIG. 2 is a side sectional view showing an installation state of the present invention.

A steel pipe 10 made of a metal layer 11 coated with an inner surface and an outer surface is divided into three in the longitudinal direction to form a passage space 50 at the center thereof and an auxiliary space 56 is provided on the both sides of the passage space 50, A fluid space 53 for installing the water supply pipe 60 and the sewage pipe 61 and an electric communication space 54 and a cable pipe 63 for installing the electric communication pipe 62 in which the electric / And the other space (55) to be installed.

A drainage space 52 is formed in the passage space 50 in which the steel pipe 10 is formed in a circular shape so that water generated naturally or water leaking from the outside is naturally collected and flows from the upper side of the drainage space 52 And a grating 51 installed at the bottom of the space 50 for allowing the operator or the manager to pass through without being influenced by moisture.

A guide light 70 is provided on the upper side of the passage space 50 so as to provide light for passage and inspection by providing a bulb.

In which a column frame 31 is provided at regular intervals on both sides of the passage space 50 for partitioning the passage space 50, the fluid space 53, the electric communication space 54 and the other space 55, And the connecting device 30 is installed.

The height from the pillar frame 31 to the inside of the passage space 50, the fluid space 53, the electric communication space 54 and the other space 55 to be connected to the frame connecting device 30 The adjustment device 20 is installed.

A pipe fixing device 60 for fixing the earthquake-proof pipe 60, the sewage pipe 61, the electric / communication pipe 62, and the cable pipe 63 is provided above the pipe support 23 of the height adjusting device 20, (40).

The steel pipe 10 coated with the inner surface and the outer surface is provided with a connecting device 80 having a connecting space 82 for forming a connecting hole 81 that expands at one end and connected in a one-touch manner.

FIG. 5 is a perspective view of a main portion of the height adjusting apparatus of the present invention, FIG. 6 is a perspective view of the height adjusting apparatus of the present invention, FIG. Sectional view of a main portion of the height adjusting device of the present invention.

The height adjusting device 20 is welded and fixed to a height adjuster 21 which is formed in an arc shape along the inner diameter of the steel pipe 10 and is formed in a 'C' shape to adjust the height of the pipe support 23, And a height adjustment shaft 22 is formed at a predetermined interval on the base 21.

The pipe support 23 has a height adjustment hole 25 in which the height adjustment holes 25 are formed on both sides of the height adjustment hole 25 in which the height adjustment holes 25 are formed to adjust the height according to the engagement position of the height adjustment shaft 22 A tube connecting hole 29 is formed in the shape of a long hole so as to be offset to one side at a predetermined interval on the upper side and a frame fixing base 26 is formed on the opposite side of the height adjusting hole 25 to a lower side A frame fixing hole 27 is formed on the upper side and the lower side at a predetermined interval and then the reinforcing fixing groove 28 is bent inward at a position protruding downward so that the reinforcing bar 35 is coupled to the reinforcing bar fixing bolt 36 .

The height adjusting device 20 is provided with a height adjusting hole 25 formed in the tube support 23 and the height adjusting guide 24 so that the height adjusting shaft 21 of the height adjusting device 21 can be adjusted to a desired height The auxiliary space 56, the bodyside space 53, the electric / communication space 54, and other spaces 55 can be adjusted to various sizes as needed.

The height adjustment hole 25 is formed in a shape of "" &thetas; so that it is coupled to the height adjustment shaft 22 so as not to be easily detached. So that the tube support 23 can be easily assembled and detached.

Since the reinforcing bar 35 is long and fixed to the reinforcing fixing groove 28 formed by bending the lower side of the frame fixing bar 26, the rigidity of the left and right sides of the frame frame 31 as the upper and lower connecting ribs 31 So that the reinforcing bar 35 is connected to the pipe support 23 on the left and right sides so that the rigidity can be stably maintained.

FIG. 7 is a front elevational view of the upper and lower connecting states of the frame connecting apparatus of the present invention, FIG. 8 is a sectional view of the frame connecting apparatus of the present invention, FIG. 9 is a sectional view of the connecting state of the frame connecting apparatus of the present invention, Fig. 10 is a perspective view of a burr portion of the frame connecting apparatus of the present invention, and Fig. 11 is a plan sectional view of a main portion of the frame connecting apparatus of the present invention.

The frame connecting device 30 is configured such that the column frames 31 are connected to the upper side and the lower side from the front side of the pipe support 23 and the upper and lower ends of the column frame 31 are provided with frame- And a frame connecting hole 32 is formed in the frame connecting hole 33 so that the frame connecting hole 32 is engaged with the frame fixing hole 27 of the frame fixing frame 26 by the frame fixing bolt 34 will be.

In the column frame (31), frame upper joints (17, 18) are protruded and coupled to the upper and lower sides of the inner diameter of the steel pipe (10) by bolts.

The column frame 31 is provided with a frame connecting rod 32 in accordance with the height adjustment of the pipe rack 23. The column frame frame 31 is provided with a frame fixing hole 26 and a frame fixing bolt 34, So that it can be assembled easily.

Since the column frame 31 can be completely separated from the pipe support 23 when the inner pipe or cable is installed or replaced with a new one, it is possible to perform various operations, It can be easily applied.

FIG. 12 is a sectional view of the lower part of the traveling space according to the present invention, and FIG. 13 is a plan view of the lower part of the traveling space according to the present invention.

A drainage space 52 is formed at the lower center of the steel pipe 10 for collecting moisture generated in the inner diameter of the steel pipe 10. The inside of the column frame 31 on the upper side of the drainage space 52 is in the form of a square or a rectangle And a horizontal bar and a vertical bar are connected to the inside of the quadrangle so that a grating 51 is installed so that the operator can step on and pass.

A guide light 70 is provided on the upper center of the inner diameter of the upper steel pipe 10 of the passage space 50 in which the grating 51 is installed so as to shine light during operation and inspection.

In the passage space 50, water is naturally collected in the drain space 52 at the bottom, natural drainage is performed downward according to the natural gradient, and a grating 51 is installed at the upper side of the drain space 52 So that the worker can quickly and conveniently move on the grating 51 in a state where the worker is standing and can check the inside of the steel pipe tube joint pipe 100.

A guide light 70 is provided on the upper side of the passage space 50 so as to illuminate the inside of the passage space 50 so that the passage space 50 can pass safely and conveniently. It is.

FIG. 14 is an enlarged cross-sectional view of a main portion of a steel pipe according to the present invention. The steel pipe 10 is subjected to surface treatment for removing impurities scattered by shot blasting in the inner and outer surfaces of the metal layer 11, The coating layer 12, the adhesive resin layer 13, and the polyethylene fiber coating layer 14 are coated, and the powder epoxy coating layer 15 is coated on the inner surface thereof.

In the step of coating the powder epoxy coating layer 15, coating is performed in a state where all the internal structures are installed through the height adjusting device 20, the frame connecting device 30, and the pipe fixing device 40.

The steel pipe 10 of the present invention is composed of a metal layer 11 and provides rigidity that can withstand load and earth pressure in a state of being buried in the ground. Multiple coatings are applied to the inner and outer surfaces of the steel pipe 10, It provides high corrosion resistance and durability by protecting it safely for a long time.

The shot blasting is performed in such a manner that the shot ball is rotated and projected by the shot blasting impeller,

Preferably, the size of the shot ball is 0.8 to 1.5 mm, the projection speed of the shot ball when projected from the shot blasting impeller is 1200 to 1800 rpm, and the line speed of the steel pipe 10 is 2 to 5 mPm.

When the size of the shot ball is 0.8 mm or less, the shot ball projection effect is small and the number of times of shot blasting is increased. When the size of the shot ball is 1.5 mm or more, a short ball mark is generated and the illuminance is lowered.

When the projection rotation speed of the shot ball is 1,200 rpm or less, the effect of improving the surface roughness of the surface is insignificant. When the shot ball is 1800 rpm or more, a short ball mark is generated to reduce the illuminance. And the surface defect is generated.

In addition, when the line speed of the steel pipe 20 is 2 mpm or less, the projected area is widened and the projected image is continuously projected on one part. At the same time, there is a problem that the shot ball collides and the shot ball consumption increases. The projected image will not be sufficiently projected.

On the other hand, it is preferable that the shot blasting is performed simultaneously with respect to the inner diameter and the outer diameter of the steel pipe 10. In this manner, the time required can be shortened through shot blasting performed simultaneously with respect to the inner diameter and the outer diameter of the steel pipe 10.

It is preferable that the shot blasting is repeated two or more times. This is because, when the shot blasting is performed twice, the surface roughness defect is improved to the same extent as that of grinding the surface.

FIG. 15 is a sectional view of a steel pipe connecting apparatus according to the present invention, and FIG. 16 is a cross-sectional view of a steel pipe connecting apparatus according to the present invention.

The steel pipe connecting device 80 has a packing groove 83 formed at a predetermined distance from one end of the steel pipe 10 by an outer diameter and a connecting hole 81 having a connecting space 82 formed on an inner diameter thereof, After the packing 84 is installed in the connecting pipe 83, the tip of the other steel pipe 10 is connected to the connecting space 82 in a one-touch manner to maintain the watertightness.

Therefore, when connecting the steel pipe 10, it is possible to prevent the packing 84 from leaking from the outside at a predetermined interval in the connection space 82.

FIG. 17 is a perspective view of the tube fixing apparatus according to the present invention, and FIG. 18 is a sectional view of the tube fixing apparatus according to the present invention.

The pipe fixing device 40 fixes the upper and the sewer pipes 60 and 61, the electric / communication pipe 62 and the cable pipe 63 on the upper side of the pipe support 23, 61, the electric / communication pipe 62 and the cable pipe 63 are wrapped around the pipe support 41 and the "∩" type pipe anchor 42 is provided on the upper side of the pipe support 41, So as to penetrate through the pipe connecting hole 29, and then to be coupled with the nut 43.

On both sides of the tube fixing table 44 having a support surface 45 provided in a round manner such as the lower surfaces of the upper and lower water pipes 60 and 61, the electric communication tube 62 and the cable tube 63, So that the nut 42 is fixed to the nut 43 at the lower side of the tube connecting hole 29 after the tube fixing hole 42 is penetrated.

The tube fixing device 40 includes a tube holder 44 positioned on the upper side of the tube holder 23 and a tube holder 42. The tube holder 42 is inserted into the tube holder 41 after the tube is placed, 61 and the electric / communication pipe 62 and the cable pipe 63 can be stably installed in an earthquake-proof manner by fixing the upper and the drain pipes 60, 61, .

In this embodiment, the metal layer 11 is supplied to the round steel pipe 10 and the metal pipe 11 is supplied to the steel pipe 10 by shot blasting. And removing the rust or oil component and foreign matter from the inner and outer surfaces of the coating layer to prevent peeling of the coating material to be coated later.

The shot blasting is performed in such a manner that the shot ball is rotated and projected by the shot blasting impeller,

The size of the shot ball is 0.8 to 1.5 mm, the projection speed of the shot ball when projected from the shot blasting impeller is 1200 to 1800 rpm, and the line speed of the steel pipe 10 is controlled to be 2 to 5 mpm .

Next, in the preheating step S20, the epoxy resin, the adhesive, and the polyethylene are lifted up to a desired temperature so that the epoxy resin, the adhesive, and the polyethylene are firmly coated on the surface of the steel pipe 10 that has been subjected to the surface treatment.

In order to perform such a process, a gas torch is used, in which the flame of the gas torch is directly contacted with the steel pipe 10 to be heated.

Next, in the outer diameter first coating step S30, the epoxy coating layer 12 is coated on the surface of the steel pipe 10 by uniformly coating while rotating the epoxy powder supplied from the powder injector.

Next, the epoxy resin coating layer 12 is formed and the adhesive resin layer 13 is uniformly sprayed onto the outer diameter of the epoxy coating layer 12 while rotating the steel pipe 12 in the outer diameter second coating step S40 will be.

After the adhesive resin layer 13 is coated, a polyethylene powder is sprayed to uniformly coat the polyethylene fiber coating layer 14.

The epoxy coating layer 12 is coated to a thickness of 80 to 150 탆, the adhesive resin layer 13 is coated to a thickness of 120 to 230 탆, and the polyethylene fiber coating layer 14 is coated to a thickness of 200 to 280 탆 , And the steel pipe 10 is preferably rotated at 40 to 55 revolutions per minute.

Next, in a height adjusting device mounting step (S50), a height adjusting table 21 provided with a plurality of height adjusting shafts 22 at predetermined intervals is welded to the inner surface of the metal layer 11, The height adjusting hole 25 is connected to the height adjusting shaft 22 so that the height adjusting device 20 is installed.

The pipe support 23 is connected to the upper and the drain pipes 60 and 61, the electric / communication pipe 62 and the cable pipe 63 in determining the height of the height adjustment shaft 22 and the height adjustment hole 25, The fluid space 53, the electric / communication space 54, and the other space 55 depending on the number and size of the installation space and the size of the installation space.

The column frame 31 is connected to the frame upper connection 17 and the frame lower connection 18 at the upper and lower portions of the inner diameter of the steel pipe 10 in the column frame installation step S60, And the frame fixing bolt 34 is fixed to the frame fixing hole 27. The frame fixing bolt 34 is fixed to the frame fixing hole 27. The frame fixing bolt 34 is fixed to the frame fixing hole 27 by fitting the frame connecting frame 32 provided on the upper side,

The column frame 31 can be connected to the frame fixing bolt 34 from the frame connecting hole 33 at the upper and lower sides when the frame connecting frame 32 is to be contacted with the upper and lower frames.

The frame fixing table 26 of the pipe support 23 is formed with a reinforcing fixing groove 28 downward to assemble the reinforcing bar 35 and to fix the reinforcing bar fixing bolt 36 to the reinforcing fixing groove 28 It will be.

Since the column frame 31 is completely separated from the frame fixing table 26, the height of the tube support 23 can be freely adjusted and the height of the upper and the drain pipes 60 and 61, the electric / communication pipe 62, The fluid space 53, the electric / communication space 54, and other spaces 55 and 55a depending on the number and size of the installation spaces 63 and 63, And it is possible to adjust the number and size of the installation of the sewage pipes 60 and 61, the electric / communication pipe 62 and the cable pipe 63 as a post-operation.

Next, the inner diameter coating step S70 is carried out by raising the powder epoxy coating layer 15 to a desired temperature such that the powder epoxy coating layer 15 can be firmly coated by the surface temperature before the coating is performed, uniformly applying the adhesive, Is uniformly coated with the powder epoxy coating layer 15.

The powder epoxy coating layer 15 is formed not only on the inner surface of the steel pipe 10 but also on the inside surface of the height adjusting device 20, the frame connecting device 30 and the pipe fixing device 40, .

Next, the tube installation step S80 is performed in the fluid space 53, the electric communication space 54, and other spaces 55, the sewage pipes 60 and 61, the electric / communication pipe 62, And a tube holder 44 is installed on the upper side of the tube support 23. When the tube is wrapped by the tube holder 41 after the tube is placed on the tube holder 42, Through the pipe and fixture 46 and the pipe connection hole 29, and then fixed by the nut 43. [

Next, the cable installation step (S90) is a step of installing a plurality of cables (not shown) in the inner diameter of the electric / communication pipe 62 of the electric / communication space 54 in a state where the sewage pipes 60 and 61 are installed on the fluid space 53, And various cables are installed in the inner space of the cable pipe 63 in the other space 55. [

Next, the grating installation step S100 is to install the grating 51 on the upper side of the drainage space 52 formed at the lower floor of the passage space 50, so that the operator steps on the upper part of the grating 51, So that the water collected in the drain space 52 is discharged through the natural gradient.

In the present invention, a steel pipe coated on the inner and outer surfaces of a hollow pipe is used to facilitate the rigidity and corrosion resistance, and the height of each space can be freely adjusted by the inner diameter height adjusting device and the column frame is completely separated, And to provide a very useful invention that shortens installation, repair and installation time and maintenance time.

10: steel pipe 11: metal layer
12: Epoxy coating layer 13: Adhesive resin layer
14: polyethylene fiber coating layer 15: powder epoxy coating layer
17: frame upper connector 18: frame lower connector
20: height adjuster 21: height adjuster
22: height adjustment shaft 23:
24: height adjustment guide 25: height adjustment hole
26: Frame fixing frame 27: Frame fixing hole
28: reinforcing fixing groove 30: frame connecting device
31: Column Frame 32: Frame Connection
33: Frame connection hole 34: Frame fixing bolt
35: reinforcing bar 36: reinforcing bar fixing bolt
40: tube fixing device 41:
42: tube fixture 43: nut
44: tube holder 45: support surface
46: fixture 50: passage space
51: Grating 52: Drain space
53: fluid space 54: electric / communication space
55: Other space 56: Secondary space
60: Water supply pipe 61: Sewer pipe
62: Electricity and communication facility 63: Cable duct
70: guide light 80: connection device
81: connection 82: connection space
83: packing groove 84: packing

Claims (8)

An epoxy coating layer 12, an adhesive resin layer 13 and a polyethylene fiber coating layer 14 are formed on the outer surface of the metal layer 11 and a steel pipe 10 composed of a powder epoxy coating layer 15 is formed on the inner surface of the metal layer 11. [ In this case,
A shot blasting impeller having a size of a shot ball of 0.8 to 1.5 mm and capable of rotating at a speed of 1200 to 1800 rpm when the shot ball is rotationally projected from the shot blasting impeller, A passage space 50 in which a grating 51 is installed on the floor at the center of the inner diameter is formed,
The inside of the frame connecting device 30 for installing the column frame 31 on the frame fixing hole 27 of the frame fixing frame 26 provided at the front end of the tubular support 23 on both sides of the passage space 50 is referred to as the lower side A height adjustment device 20 for installing a tubular support 23 dividing the auxiliary space 56 into the fluid space 53, the electrical communication space 54 and other spaces 55, And a pipe fixing device (40) for fixing a pipe installed on the upper side of the pipe fixing device (40).
The frame connecting device 30 includes a frame connecting bar 32 formed with a frame connecting hole 33 to be connected to the frame fixing hole 27 of the frame fixing frame 26 by a frame fixing bolt 24, And a column frame (31) formed on the upper side for securing the passage space (50) so as to be engaged with the upper side and the lower side,
The passage space 50 is formed with a drainage space 52 in which water is naturally collected at the lower center of the steel pipe 10 and natural drainage is performed downward according to a natural gradient, And a grating (51) is formed on the upper side of the upper wall (52) in the form of a square or a rectangle, and a horizontal bar and a vertical bar are connected to the inside of the quadrangle, Tube Collection Building Using Steel Tubes.
delete The method according to claim 1,
The height adjusting device 20 includes a height adjuster 21 fixed to the inner diameter of the steel pipe 10 and having a height adjusting shaft 22 at regular intervals;
&Quot;""'''' height < / RTI >
A pipe connection hole 29 is formed in the shape of a long hole so as to be offset to one side at a predetermined interval on the upper side of the height adjustment guide bar 24 and a frame connection hole 29 is formed on the upper and lower sides of the height adjustment guide bar 24, And a tube support (23) for forming a reinforcing fixing groove (28) by bending the lower side of the frame fixing table (26) formed with the fixing hole (27) inwardly. tube. delete delete delete delete delete

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