KR101794063B1 - Support sleeve for pipeline - Google Patents

Support sleeve for pipeline Download PDF

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Publication number
KR101794063B1
KR101794063B1 KR1020160013474A KR20160013474A KR101794063B1 KR 101794063 B1 KR101794063 B1 KR 101794063B1 KR 1020160013474 A KR1020160013474 A KR 1020160013474A KR 20160013474 A KR20160013474 A KR 20160013474A KR 101794063 B1 KR101794063 B1 KR 101794063B1
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KR
South Korea
Prior art keywords
main body
pipe
body portion
manhole
support plate
Prior art date
Application number
KR1020160013474A
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Korean (ko)
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KR20170092298A (en
Inventor
오강원
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오강원
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Priority to KR1020160013474A priority Critical patent/KR101794063B1/en
Publication of KR20170092298A publication Critical patent/KR20170092298A/en
Application granted granted Critical
Publication of KR101794063B1 publication Critical patent/KR101794063B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/021—Connection of sewer pipes to manhole shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/10—Sealing by using sealing rings or sleeves only

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

More particularly, the present invention relates to a sleeve for supporting a pipe, and more particularly, to a sleeve for supporting a pipe, in which a pipe installed when a pipe is installed through an underground or a ground structure is not in direct contact with the structure, So that the shock absorbing member can be absorbed.
The present invention relates to a circular pipe-shaped main body portion having a cut-out portion in the longitudinal direction, a circular support plate contacting the one surface of the main body portion and having a "C" shape in cross section, and a circular support plate contacting the other surface of the main body portion And a coupling compression means for compressing the main body portion while integrally forming the main body portion, the circular support plate, and the circular compression plate, so that the main body portion is inserted into the main body through the partition wall of the manhole buried in the ground, An effect of being able to absorb an impact due to a vibration due to a change in pressure of a pipe by providing an effect between the outer circumferential surface of the pipe to be installed and the inner circumferential surface of the through hole of the partition, Can be easily filled with a body portion having a cut-out portion in the lengthwise direction. In particular, And compressing a body portion can be secured by using a water-tightness and air-tightness of the manhole which pipe is installed, there is an effect that can be to prevent the penetration of ground soil Sanaa ground water prevent damage prior to index.

Description

Support sleeve for pipeline}

More particularly, the present invention relates to a sleeve for supporting a pipe, and more particularly, to a sleeve for supporting a pipe, in which a pipe installed when a pipe is installed through an underground or a ground structure is not in direct contact with the structure, So that the shock absorbing member can be absorbed.

Generally, a water supply pipe, a sewage pipe, a city gas pipe, an electricity supply pipe, and a communication equipment pipe are buried in the city in order to provide convenience of living, and the water supply pipe or city gas pipe is sent from the supply pipe to each use place with a constant pressure .

Hereinafter, a water supply pipe will be described as an example to effectively explain the present invention, and a water supply pipe buried underground will be hereinafter referred to as "pipe ".

The pipeline is buried in the ground between the pumping stations of the respective regions from the water supply pond. In each pumping station, the living water or industrial water is sent to a residential area, a commercial area, or an industrial area.

At this time, the pipes are buried in the ground to meet the required amount between each pump station and each area. In order to facilitate the maintenance of the buried pipelines, manholes, which are underground structures, are installed at regular intervals. The domestic water or the industrial water supplied according to the present invention can be singulated.

In order to prevent damages to joints due to subsidence, a large area foundation plate is installed in the pipeline buried in the ground to prevent damage to the joints caused by external impacts. .

In addition, an exponent installed on a manhole, an underground structure, is installed in a state where it is supported by a support. At this time, the manhole, which is an underground structure, is constructed by constructing a mold, installing a concrete, However, in recent years, a manhole has been separately manufactured to fit in accordance with the pre-expedition specifications and is buried in the ground.

In order to install the channel before the exponent of the manhole buried in the ground as described above, a channel is formed after the channel is larger than the diameter of the channel. At this time, the gap between the outer diameter of the channel and the inner diameter of the through hole of the manhole is filled with cement mortar (Ground water or soil) is prevented from penetrating into the manhole, thereby keeping the stability of the exponent installed inside the manhole.

Korea Patent No. 0615427 (Registered water supply system for waterworks, registered on August 17, 2006) Korean Patent Registration No. 0932663 (Registered on December 10, 2009)

In the prior art as described above, the shock absorber is installed at a predetermined interval along the pipeline of the water pipe embedded in the ground to protect the pipeline from an impact or pressure generated from the outside. One prior art water pipe shock absorber is composed of a pair of shock absorbers with a semicircular flat plate and a rubber shock absorber on both sides and a spring plate mounted on the inside of the shock absorber.

Another constitution of the prior art water pipe shock absorber comprises a base plate having a buffer pad at a portion in contact with the pipe, a cushioning wall on both sides having a structure capable of moving to both sides, And a cover having a wrinkle portion in the center.

The above-mentioned prior arts can buffer the external impact or pressure applied to the pipeline buried in the ground to some extent, but the pipeline buried in the ground is caused by the load pressure generated in the ground, Not only the pressure or the impact is applied, but also the shock due to the vibration and vibration due to the internal pressure change of the pipeline.

The vibration caused by the pressure change of the pipeline and the shock due to the vibration can be performed by the water pipe damping device according to the prior art. However, as described above, in the pipeline buried in the ground, The manhole is provided with an expedition passage for maintenance of the pipeline. When a pipeline is formed through the partition wall of the manhole, a manhole is formed through a through hole larger than the outer diameter of the pipeline installed in the partition of the manhole.

Since the manhole installed in the ground must have airtightness in order to prevent foreign matter such as soil or groundwater from being injected into the manhole, the gap between the through hole and the channel of the manhole wall is filled with the cement mortar. However, The cement mortar portion which has been cured is damaged and a shock is applied to the pipeline.

More specifically, the vibration generated in the pipeline is generated by the pressure change of the water supply pipe through the pipeline, and the pressure change is supplied at a constant pressure in the pumping station supplying the water supply. However, The pressure is changed according to the change of the pressure.

As described above, the seam mortar of the through hole formed in the partition wall of the manhole is damaged by the vibration generated in the pipeline, so that a space is created, and the outer diameter portion of the pipeline passing through the damaged space comes into contact. At this time, The impact and vibration are applied to the connecting flange portion before the exponent, and when such impact and vibration are repeated over a long period of time, There is a problem that the connecting flange portion before the portion or the exponent is damaged.

In addition, the airtightness of the manhole installed in the ground is lowered, and the exponential transfer installed in the manhole is submerged due to the penetration of the soil or the groundwater. In particular, when the groundwater and the groundwater are infiltrated into the manhole, There is a problem of causing the phenomenon.

 SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the problems of the prior art, and it is an object of the present invention to provide an expansion member made of a soft rubber material between an inner circumferential surface of a through hole provided in a partition wall of a manhole and an outer circumferential surface of a conduit, And it is an object of the present invention to provide a pipe support sleeve capable of absorbing vibration generated due to a pressure change.

Another object of the present invention is to provide an airtight seal and a watertight seal between the outer circumferential surface of the channel and the inner circumferential surface of the through hole of the manhole so as to prevent penetration of the soil or groundwater into the space inside the manhole It is an object of the present invention to provide a pipe supporting sleeve that prevents a phenomenon of a pore in the ground around a manhole and can prevent damages before an index which is installed in a manhole.

In order to achieve the above object, according to the present invention, there is provided a pneumatic tire comprising a circular pipe-shaped main body having a plurality of engaging holes spaced equidistantly from a cutout in a longitudinal direction,
One surface of the main body portion has an arc shape and is made of metal having a corrosion resistance and has a bottom surface in contact with the main body portion, a curved surface of the inner mainframe and a curved surface of the outer major surface, A support plate having a plurality of nut holes equally spaced apart from the coupling holes of the plurality of coupling holes,
And the other surface of the main body is formed into a circular shape with a flat iron having corrosion resistance and has a plurality of round holes and a plurality of fitting holes spaced equally from the coupling holes of the main body,

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And a coupling compression means for compressing the main body portion while integrally forming the main body portion, the circular support plate, and the circular compression plate.

 The body portion is formed of rubber having elasticity and has a plurality of equally spaced engagement holes in the longitudinal direction. The body portion is provided with a plurality of inner circumferential grooves and outer circumferential grooves on the inner circumferential surface and the outer circumferential surface, respectively.

The support plate is made of a metal material having corrosion resistance and has a bottom surface in contact with the main body, a curved surface of the inner main curve and a curved surface of the outer main curve, And a nut hole is provided.

The compression plate is made of a metal material having corrosion resistance and is provided with a plurality of fitting holes which are spaced at the same interval as the fitting holes of the body portion.

Wherein the coupling and compressing means is composed of a nut and a bolt, the nut being fitted between the internal and external bending surfaces of the support plate and coinciding with the nut holes provided on the bottom surface, So that the body portion can be compressed by being engaged with the nut of the support plate.

The pipe support sleeve of the present invention as described above is installed between the outer peripheral surface of the channel and the inner peripheral surface of the through hole of the partition when the pipe is installed through the partition wall of the manhole embedded in the ground, So that it is possible to absorb an impact caused by the impact.

In addition, the space between the outer circumferential surface of the channel and the inner circumferential surface of the through hole formed in the partition wall of the manhole can be easily filled by using the body portion having the cut-out portion in the longitudinal direction. Particularly, The watertightness and the airtightness of the manhole can be ensured, and it is possible to prevent the penetration of soil or groundwater in the ground, thereby preventing damage before the exponent.

1 is a perspective view of an assembled state of a pipe support sleeve according to the present invention,
FIG. 2 is an exploded perspective view of a pipe support sleeve according to the present invention,
FIG. 3 is a partially cutaway perspective view of a manhole in which a tube supporting sleeve according to the present invention is installed,
(a) shows a state before installation of a pipe support sleeve according to the present invention,
(b) is a partially cutaway perspective view showing a state in which a pipe supporting sleeve according to the present invention is installed,
FIG. 4 is a cross-sectional view illustrating a compression state of a main body portion provided with a pipe support sleeve according to the present invention,
a) is a sectional exemplary view of a state before the main body portion according to the present invention is compressed,
b) is a cross-sectional exemplary view of the body portion according to the present invention in a compressed state,
Fig. 5 is a cross-sectional exemplary view showing another example of a main body which is a substantial part of a sleeve for supporting a duct according to the present invention. Fig.

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

FIG. 1 is a perspective view of a pipe supporting sleeve according to the present invention in an assembled state, FIG. 2 is an exploded perspective view of a pipe supporting sleeve according to the present invention, FIG. 3 is a perspective view of the pipe supporting sleeve according to the present invention, (A) is a state before the installation of a pipe support sleeve according to the present invention, and (b) is a partially cut perspective view in a state in which a pipe support sleeve according to the present invention is installed.

(A) is a cross-sectional view illustrating a state before the main body portion is compressed according to the present invention, and (b) is a cross-sectional view of the main body portion according to the present invention, 5 is a cross-sectional view illustrating another example of a body portion which is a substantial part of a sleeve for supporting a pipe according to the present invention.

1 and 2, the present invention includes a circular pipe-shaped body 10 having a cutout 11 in the longitudinal direction, and a circular pipe-shaped body 10 in contact with one surface of the body 10, An arc-shaped compression plate 30 contacting with the other surface of the main body 10 and having a flat top shape, and a circular support plate 20 20) and a circular compression plate (30) integrally with each other, and compressing the main body (10).

 The main body 10 is formed of rubber having elasticity and is provided with a plurality of engagement holes 12 in the longitudinal direction with an equal interval. The inner peripheral surface 13 and the outer peripheral surface 14 have inner peripheral grooves 15, And the outer circumferential groove 16 and the inner circumferential groove 15 are formed at positions which are mutually offset from each other in cross section.

The support plate 20 is made of a metal material having corrosion resistance and has a bottom surface 21 in contact with the main body portion 10 and an inner main curve surface 22 and an outer main curve surface 23 and has a " And a plurality of nut holes 24 formed on the bottom surface 21 at the same interval as the engaging holes 12 of the main body 10.

The compression plate 30 is made of a metal material having corrosion resistance and has a plurality of fitting holes 31 that are spaced at the same interval as the coupling holes 12 of the main body portion 10.

The coupling and compressing means 40 is composed of a nut 41 and a bolt 42. The nut 41 is sandwiched between the inner and outer curve surfaces 22 and 23 of the support plate 20, And the bolt 42 coincides with the nut hole 24 of the nut 20 of the support plate 20 through the fitting hole 31 of the compression plate 30 and the fitting hole 12 of the body portion 10, So that the main body 10 can be compressed.

In order to facilitate understanding of the operation of the present invention as described above, for example, a water pipe will be described with reference to FIGS. 3 (a) and 3 (b) the pipeline buried in the ground is equipped with a manhole 1 which is a structure for maintenance of the pipeline 4 at regular intervals as shown in FIG. And an anchor bolt is provided at the upper portion of the manhole 1 to provide a pillar 3 functioning as a passage for maintenance work on the ground.

In order to repair or branch the pipeline 4 without breaking the pipeline 4 when repairing the pipeline 4 or branching the pipeline 4, The manhole 1, which is a structure for protecting the exponent 2, has previously formed a certain space by stacking bricks in a laminated manner, but such a laminated manhole 1 needs a long working period And the sidewalls of the manhole 2 made of laminated bricks are vulnerable to external pressure and are partially damaged. As a result, recently, there is a problem that the manhole 1 is standardized, (2) is installed in the ground, and a channel (4) for supplying water to the water outlet (2) is provided.

At this time, in the state where the through hole 6 is formed in the side wall of the manhole 1 and the channel 4 is connected to the exponent 2, the cut portion 11 The support plate 20 and the compression plate 30 which are separated into a plurality of circles and form one circular shape are connected to the main body 10 through the coupling compression means 40, .

The body 10, the support plate 20 and the compression plate 30 are each provided with a coupling hole 12, a nut hole 24 and a fitting hole 31 so that the bolt 42 of the coupling compression means 10, And the tip of the bolt 42 protrudes through the nut hole 24 of the support plate 20. The nut 41 is fastened to the tip of the protruded bolt 42. [

The nut 41 fastened to the tip of the bolt 42 is in tight contact with the bottom surface 21 of the support plate 20 and the outer surface of the nut 41 is in contact with the inner circumferential curve surface 22 of the support plate 20 It is not necessary to hold the nut 41 when the bolt 42 is brought into contact with the curved outer surface 23.

That is, the bottom surface width of the support plate 20 is the same as the diameter of the hexagonal surface forming the outer peripheral surface of the nut 41. Two corresponding surfaces of the nut 41 are the inner peripheral surface 22 of the support plate 20, The nuts 41 are fixed (sandwiched) by the inner circumferential curve 22 and the outer circumferential curve 23 in a state in which the nut 41 is in close contact with the circumferential curve 23.

When the compression plate 30 and the support plate 20 are attached to both sides of the main body 10, both ends of the compression plate 30 and the support plate 20, It is preferable to mount it at a position deviating from the cut-out portion 11 formed (see Fig. 3 (a)).

Since the male hole 1 can be moved along the pipe 4 in a state in which the bolt 42 as the engaging means 40 is not tightened while the sleeve according to the present invention is installed on the outer peripheral surface of the pipe 4 as described above, When the bolt 42 of the compression plate 30 is tightened with the outer peripheral surface of the main body 10 positioned on the inner peripheral surface of the through hole 6 of the manhole 1, The compression plate 30 compresses the body portion 10 having elasticity. As a result, the compression plate 30 compresses the body portion 10 having elasticity.

Since the main body portion 10 compressed by the coupling and compression means 40 is formed of a rubber material having elasticity as described above, the outer peripheral surface 14 and the inner peripheral surface 13 of the main body portion 10 are inflated outwardly and inwardly The outer circumferential surface 14 of the main body portion 10 is brought into close contact with the inner circumferential surface of the through hole 6 of the manhole 1 and the inner circumferential surface 15 of the main body portion 10 is in close contact with the outer circumferential surface of the channel 4 (See Fig. 3 (b)).

The inner circumferential surface 13 and the outer circumferential surface 14 of the main body portion 10 are provided with annular inner circumferential grooves 15 and outer circumferential grooves 16 And the bolts 42 and the nuts 41 as the coupling and compression means 40 are tightened, the support plate 20 and the compression plate 30 The inner circumferential surface 13 and the outer circumferential surface 14 of the body portion 10 are formed with the inner circumferential groove 15 and the outer circumferential groove 16 so as to be more elastic And the inner circumferential groove 15 and the outer circumferential groove 16 are formed at positions deviating from each other on the vertical plane, the expansion and contraction can be more effectively performed (see Figs. 4A and 4B)

5 shows an example of the inner circumferential groove 15 and the outer circumferential groove 16 provided in the inner circumferential surface 13 and the outer circumferential surface 14 of the main body portion 10, 16 are formed in a semicircular shape in the cross section, and the same functions and effects as those described above are applied. However, in injection molding the main body 10, the inner circumferential groove 15 and the outer circumferential groove 16 It is more advantageous in terms of production.

The pipe supporting sleeves according to the present invention as described above are exemplified as tap water pipes buried in the ground, but they can also be applied to pipelines of oil pipelines and city gas pipes buried in the ground. Particularly, It can be applied to newly installed pipelines and can be applied to all pipelines installed in large-scale ground or large-scale buildings. Therefore, It is possible to secure the airtightness and the watertightness while absorbing the vibration and the shock caused thereby, so that the possibility of industrial use will be wide.

10 - Body part.
11 - incision,
12 - coupling hole,
13 - Inner circumference,
14 - outer peripheral surface,
15 - Inner Home,
16 - Outer groove,
20 - Support plate,
21 - Bottom view,
22 - My weekly curve,
23 - Outside curvature surface,
24 - nut hole,
30 - Compressed plate,
31 - insert hole,
40 - coupling compression means,
41 - Nuts,
42 - Volts.
1 - Manhole,
2 - exponent before,
3 -
4 - Pipeline (waterworks),
5 -
6 - Through hole.

Claims (4)

Shaped body portion 10 having a plurality of engaging holes 12 equally spaced apart from the incision portion 11 in the longitudinal direction,
One surface of the main body 10 has an arcuate shape and is made of a metal having corrosion resistance and has a bottom surface 21 in contact with the main body portion 10 and an inner main curve surface 22 and an outer main curve surface 23, A support plate 20 having a plurality of nut holes 24 formed at the bottom surface 21 at the same interval as the coupling holes 12 of the main body 10,
The other surface of the main body 10 has a plurality of through holes 31 which are equally spaced from the coupling holes 12 of the main body 10, , A compression plate (30)
(40) for compressing the main body (10) while integrating the main body (10), the circular support plate (20) and the circular compression plate (30) .
2. The connector according to claim 1, wherein the main body portion (10) is made of rubber having elasticity, and has a plurality of engagement holes (12) Wherein the inner circumferential groove (15) and the outer circumferential groove (16) are provided so as to have an inner circumferential groove (15) and an outer circumferential groove (16).
delete The nut according to claim 1, wherein the coupling and compression means (40) comprises a nut (41) and a bolt (42), the nut (41) And the bolt 42 is inserted into the fitting hole 31 of the compression plate 30 and the fitting hole 12 of the body portion 10, Wherein the nut (41) of the support plate (20) is engaged with the nut (41) to compress the main body (10).
KR1020160013474A 2016-02-03 2016-02-03 Support sleeve for pipeline KR101794063B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160013474A KR101794063B1 (en) 2016-02-03 2016-02-03 Support sleeve for pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160013474A KR101794063B1 (en) 2016-02-03 2016-02-03 Support sleeve for pipeline

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Publication Number Publication Date
KR20170092298A KR20170092298A (en) 2017-08-11
KR101794063B1 true KR101794063B1 (en) 2017-11-06

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200362351Y1 (en) * 2004-06-18 2004-09-16 김대식 Supporting device of construction plumbing pipe
KR101232295B1 (en) * 2011-12-01 2013-02-13 임장호 Flame-retardant finish plumbing support

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200362351Y1 (en) * 2004-06-18 2004-09-16 김대식 Supporting device of construction plumbing pipe
KR101232295B1 (en) * 2011-12-01 2013-02-13 임장호 Flame-retardant finish plumbing support

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