KR20160121109A - Prefabricated cable protection block - Google Patents

Prefabricated cable protection block Download PDF

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Publication number
KR20160121109A
KR20160121109A KR1020150050622A KR20150050622A KR20160121109A KR 20160121109 A KR20160121109 A KR 20160121109A KR 1020150050622 A KR1020150050622 A KR 1020150050622A KR 20150050622 A KR20150050622 A KR 20150050622A KR 20160121109 A KR20160121109 A KR 20160121109A
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KR
South Korea
Prior art keywords
block
protection
blocks
protection blocks
protection block
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KR1020150050622A
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Korean (ko)
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KR101677050B1 (en
Inventor
김형조
양재원
Original Assignee
삼성파워텍주식회사
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Priority to KR1020150050622A priority Critical patent/KR101677050B1/en
Publication of KR20160121109A publication Critical patent/KR20160121109A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • H02G9/065—Longitudinally split tubes or conduits therefor

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  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

An embodiment of the present invention relates to a prefabricated cable protection block according to. At that time, the prefabricated cable protection block is formed with a main construction including upper and lower protection blocks (10, 20), duct grooves (12, 22), inclined planes (14, 24), an intaglio coupling unit (30), and a relief coupling unit (40) to strongly maintain an assembling state with a combination force between adjacent blocks by a block load and a soil load for filling without the application of a separate coupling unit including the bolting by being stacked and constructed. Thus, the present invention can strongly maintain the assembling state with the combination force between the adjacent protection blocks by a protection block load and the soil load for filling without the application of the separate coupling unit including the bolting by applying the combination force between the protection blocks by a sliding motion since the intaglio coupling unit which is integrally formed on the protection block and the relief coupling unit formed by the combination of the adjacent protection blocks are mutually engaged.

Description

{Prefabricated cable protection block}

More particularly, the present invention relates to a prefabricated cable protection block, and more particularly, to a prefabricated cable protection block, more particularly, to a prefabricated cable protection block, To a rigidly secured prefabricated cable protection block.

In general, a manhole is provided at the junction of the communication cable and the electric cable embedded in the underground so as to facilitate the branching and connection of the line, and the protection block in which the cable is installed is assembled in the line between the manhole and the manhole do.

For example, most of the protection blocks are formed as hollow hollow ducts, and the ducts are continuously assembled in the longitudinal direction to form a line through which the cables are installed. However, after the protection block is installed, It is troublesome to work, and a plurality of cables are located in the same space, and other cables are damaged when a fire occurs.

Conventionally, in Patent Registration No. 10-0675457, a plurality of lower side blocks, each having a groove on the upper side, are arranged in series with their end faces facing each other so that the grooves are continuous. A plurality of upper side blocks each having a groove on the lower surface thereof are arranged in such a manner that the end faces thereof are covered with the grooves so as to cover the upper portion of the corrugated tube engine, Wherein a plurality of independent mountain portions and valleys are alternately formed in a corrugated shape at the outer periphery of the corrugated tube so that a gap is formed between adjacent lower block and upper block, The entrance portion of the tube is blocked by the independent wave-like mountain portion of the tube, and the entrance of the wave portion is prevented from entering the interior of the tube, And so.

However, the above-mentioned conventional technique is a technique of forming a buried underground pipe by mounting a lower block and an upper block side in a red state, but many problems are posed in use and construction.

First, when a high voltage is applied, the cable is vibrated and shrunk, and the lower block and the upper block move together to generate a gap between the blocks, so that the leakage and the cable can not be safely protected. In particular, The problem was more serious.

Second, in order to prevent the flow of the lower block and the upper block after the construction, it is necessary to carry out the bolting work through the longitudinal direction, so that the construction period is delayed. Especially, since the bolt hole can be bolted by exactly coinciding the bolt holes, In construction, workability was significantly lowered.

Third, when the lower block and upper block are separated for maintenance during maintenance, it is impossible to separate them by bolting corrosion. Therefore, new block must be replaced after crushing the block.

Accordingly, it is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a bolt- The present invention relates to a prefabricated cable protection block.

In order to achieve this object, a feature of the present invention is that a plurality of channel grooves 12 and 22 are formed so as to receive a cable protective pipe 1 between upper and lower protection blocks 10 and 20, The upper and lower protection blocks 10 and 20 are provided with a concave engaging portion 30 formed of a pair of inclined surfaces 14 and 24 on a joint surface to be laminated and interposed between the upper and lower protection blocks 10 and 20, (24) of the upper and lower protection blocks (10) and (20) adjacent to each other in the longitudinal direction form a boss connecting portion (40) by combination with the inclined surfaces (14) and (24) The embossed fastening part 40 is received in the engraved fastening part 30 and is provided so that a binding force acts between the upper and lower protection blocks 10 and 20 by the sliding motion of the inclined surfaces 14 and 24. [

A plurality of channel grooves 12, 22, and 102 are formed to accommodate the cable protective pipe 1 between the upper and lower protection blocks 10 and 20 extended in the longitudinal direction and the extended protection block 100, The upper and lower protection blocks 10 and 20 and the extended protection block 100 are provided with a concave engaging portion 30 formed by a pair of inclined surfaces 14, One of the slopes 14, 24, and 104 of the upper and lower protection blocks 10 and 20 and the extended protection block 100 includes the upper and lower protection blocks 10 and 20 adjacent to each other in the longitudinal direction, The embossed fastening portion 40 is received in the engraved fastening portion 30 and is engaged with the inclined surface 14 to form a relief portion 40. The embossed fastening portion 40 is formed by combining with the inclined surfaces 14, (20) by a sliding motion of the upper and lower protection blocks (10, 20).

In this case, the protection block is fixed to the left and right positions by engagement of the guide groove 52 and the guide protrusion 54 which are formed in the longitudinal direction on the inclined surface.

In addition, the protection block is provided in a pair so that the inclined surfaces having a reduced thickness toward the center of the opposite ends are symmetrical.

In addition, the protection block is characterized in that a strip-shaped cutting line (60) is provided at a boundary where a pair of inclined surfaces meet.

In addition, the protective block may be provided with a prefabricated fitting block 70 at an end thereof, or a lid block 80 with a lower opening to accommodate the protective block, and a mortar is injected through the injection port 82 to be closed .

In addition, a hermetic groove for inserting the hermetic member 92 is formed on the joint surface where the protection blocks are laminated and joined in the longitudinal direction, and the hermetic groove is provided in parallel with the channel groove.

According to the present invention, since the engaging portion formed integrally with the protection block and the relief portion formed by the combination of the adjacent protection blocks interlock with each other and the binding force acts between the protection blocks due to the sliding motion of the inclined surfaces Accordingly, even if a separate fastening means including bolting is not applied, a binding force is generated between the adjacent protection blocks due to the load of the protection block itself and the load of the buried earth, so that the assembled state is firmly maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an assembled cable protection block according to an embodiment of the present invention; FIG.
Fig. 2 is a schematic view showing the whole assembled cable protection block according to an embodiment of the present invention; Fig.
3 is an assembled state view of a prefabricated cable protection block according to an embodiment of the present invention.
4 is a schematic view showing a cutting line of a prefabricated cable protection block according to an embodiment of the present invention;
5 is a view showing a fitting block of a prefabricated cable protection block according to an embodiment of the present invention;
6 is a view showing a cover block of a prefabricated cable protection block according to an embodiment of the present invention;
Fig. 7 is a view showing a hermetic groove and a hermetic member of a prefabricated cable protection block according to an embodiment of the present invention; Fig.
8 is a perspective view of the assembled cable protection block according to another embodiment of the present invention.
FIG. 9 is a schematic view of a composite cable protection block according to another embodiment of the present invention; FIG.
10 is a view showing an extended protection block of a prefabricated cable protection block according to another embodiment of the present invention.
FIG. 11 is a configuration diagram showing an airtight groove and a hermetic member of a prefabricated cable protection block according to another embodiment of the present invention.

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

The present invention relates to a prefabricated cable protection block according to an embodiment of the present invention in which a prefabricated cable protection block is stacked to form a block between adjacent blocks due to the block self load and the filling soil load without applying a separate fastening means including bolting. The upper and lower protection blocks 10 and 20, the channel grooves 12 and 22, the inclined surfaces 14 and 24, the engraved fastening portions 30 and the relief fastening portions 30, (40).

FIG. 1 is a perspective view of an assembled cable protection block according to an embodiment of the present invention. FIG. 2 is a view illustrating the assembled cable protection block according to an embodiment of the present invention. 4 is a configuration diagram showing a cutting line of a prefabricated cable protection block according to an embodiment of the present invention. FIG. 5 is a schematic view illustrating a prefabricated cable protection block according to an embodiment of the present invention. FIG. 6 is a view showing a cover block of a prefabricated cable protection block according to an embodiment of the present invention, and FIG. 7 is a view showing a prefabricated cable protection block according to an embodiment of the present invention. An airtight groove and a hermetic member.

The upper and lower protection blocks 10 and 20 according to the embodiment of the present invention are formed in a longitudinal direction and a plurality of channel grooves 12 and 22 are formed to accommodate the cable protection tube 1. The upper and lower protection blocks 10 and 20 are formed in the shape of a plate and the upper protection block 10 is extended on the lower protection block 20 after the lower protection block 20 is extended in the longitudinal direction along the cable construction direction 1 and 2, the joint surfaces of the lower protection blocks 20 are positioned so as to be inconsistent with the joint surfaces of the upper protection blocks 10, 20 are connected to each other so as to be positioned at the center of the upper protective block 10.

The channel grooves 12 and 22 are formed between the upper and lower protection blocks 10 and 20 so that the cable protection pipe 1 accommodating the cable is accommodated. The upper and lower protection blocks 10 and 20 are formed in a hemispherical shape on the upper and lower protection blocks 10 and 20, respectively.

Therefore, the upper and lower protection blocks 10 and 20 can be easily handled and transported, and the number of stacked layers of the upper and lower protection blocks 10 and 20 can be changed according to the quantity and size of cables, The channel grooves 12 and 22 can be selectively used to flexibly cope with the situation in the field.

The cable protection pipe 1 is formed in a corrugated pipe shape and is accommodated in the pipelines 12 and 22 longitudinally formed on the upper and lower protection blocks 10 and 20 so that the cable protection pipe 1 is fixed So that the protection blocks 10 and 20 can be firmly fixed in position while being prevented from moving in the lateral direction.

The intaglio coupling part 30 according to the present invention is constituted by a pair of inclined surfaces 14 and 24 on a joint surface where the upper and lower protection blocks 10 and 20 are laminated to each other. 2, the concave engaging portion 30 is provided in a pair so that the inclined surfaces 14 and 24 having a thickness reduced toward the center of the protective blocks 10 and 20 are symmetrical to each other, 20, the concave engaging portion 30 is formed in the shape of "V", and when it is applied to the upper protective block 10, it is formed in the shape of "^". That is, the upper and lower protection blocks 10 and 20 in which the perforated fastening part 30 is formed are manufactured as a single piece having the same shape and used as the upper protection block 10 or the lower protection block 20 according to the upper and lower construction positions, There is no construction.

The embossed fastening part 40 according to the present invention is also applicable to the upper and lower protection blocks 10 and 20 in which one side inclined surfaces 14 and 24 of the upper and lower protection blocks 10 and 20 are adjacent to each other in the longitudinal direction And is formed by combination with the inclined surfaces 14 and 24.

As an example, the relief portions 40 of the lower protective block 20 are in the form of "^ " mating with the inclined surfaces 24 formed at the ends which are connected to each other in the longitudinal direction, The upper protection block 10 is formed so as to engage with the engraved fastening portion 30 of the lower protection block 20 and the engaging portion 40 of the upper protection block 10 is formed in the same manner as the lower protection block 20 and is engaged with the engraved fastening portion 30.

A plurality of upper and lower protection blocks 10 and 20 are stacked and engaged with each other in a staggered manner by the bosses 40 and the engaging portions 30 in the longitudinal direction so that the protection blocks 10 and 20 They are linked together in a complementary manner.

The embossed fastening part 40 according to the present invention is accommodated in the engraved fastening part 30 so that a binding force acts between the upper and lower protection blocks 10 and 20 by the sliding motion of the inclined surfaces 14 and 24. [ do. As shown in FIG. 3, when the upper and lower protection blocks 10 and 20 are stacked, the corresponding inclined surfaces are engaged with each other at an inclination angle so that the upper and lower protection blocks 10 and 20 are inclined in the inclined angle direction of the inclined surfaces 14 and 24 when a load (block self- Since the binding force continues to act so that the adjacent upper and lower protection blocks 10 and 20 adjoining in the longitudinal direction due to the sliding force are continuously applied, the protection block 10 after the construction, even without applying the separate binding means including the bolting, (20) is firmly held.

The protection blocks 10 and 20 are fixed to the left and right positions by the engagement of the guide protrusion 54 and the guide groove 52 formed in the longitudinal direction on the inclined surface. The guide grooves 52 and the guide protrusions 54 are formed in the longitudinal direction in which the protective blocks 10 and 20 are extended and are engaged with each other. The watertightness between the protection blocks 10 and 20 is firmly maintained.

The guide grooves 52 and the guide protrusions 54 are formed in the upper and lower protection blocks 10 and 20 in the left and right direction by allowing the upper and lower protection blocks 10 and 20, (20) is prevented from flowing.

The protection blocks 10 and 20 are provided with a strip-shaped cutting line 60 at a boundary where the pair of slopes 14 and 24 meet. The cutting line 60 is formed in the width direction of the protection blocks 10 and 20 in the shape of a negative-electrode band and is formed on at least one of the outer circumferential surface, the inner circumferential surface and the side surface of the protection blocks 10 and 20, When the impact is applied to one end of the blocks 10 and 20, the protection blocks 10 and 20 are accurately divided into two along the cutting line 60.

As shown in FIG. 4, when the protection blocks 10 and 20 are installed between the manhole 2 and the manhole 2, the protection blocks 10 and 20 protruding from the start portion and the finishing portion, Is precisely cut along the cutting line 60 so that the starting portion and the finishing portion are longitudinally aligned.

The protective block 10 or 20 may be provided with a prefabricated fitting block 70 at an end thereof or a cover block 80 with a bottom opened to receive the protection blocks 10 and 20 and may be provided with an injection port 82 And then the mortar is injected into the interior through the opening. The fitting block 70 or the cover block 80 is configured to close the spaces separated between the manholes 2 when the protection blocks 10 and 20 are installed, The space between the manhole 2 and the protection blocks 10 and 20 is closed by assembling the " C " fitting block 70 on both the left and right sides so as to be formed in the same shape as the sectional shape of the assembly. At this time, the fitting block 70 is assembled to each other at left and right sides, and is fastened by fastening means including bolts. Thus, even if the mortar is injected into the fitting block 70, the fitting block 70 is prevented from being stuck and a hermetic member is installed .

6, the cover block 80 is formed in a rectangular shape with its bottom opened to accommodate the protection block 10, 20, and the space between the manhole 2 and the protection block 10 (20) There is an advantage that the position of the cover block 80 can be adjusted according to the size of the sub block to be smoothly finished even if the space size between the manhole 2 and the assembly of the protection blocks 10 and 20 is not constant.

An inlet 82 is formed in the upper part of the lid block 80 so that the lid block 80 is inserted into the lid block 80 and a mortar is injected into the lid block 80. At this time, The inner air is discharged during the injection of the mortar, and the mortar injection method through the injection port 82 is also applicable to the fitting block 70.

An airtight groove for inserting the airtight member 92 is formed in the joining surfaces of the upper and lower protection blocks 10 and 20 in the lamination direction and the longitudinal direction and the airtight grooves are formed in the channel grooves 12 and 22, Respectively. The airtight grooves are formed in the longitudinal direction of the upper and lower protection blocks 10 and 20 in the same manner as the guide grooves 52 to insert the airtight member 92 (for example, packing, The watertightness of the inner wall 22 is maintained. Since the airtight grooves are provided in parallel with the channel grooves 12 and 22 at this time, when the airtightness member 92 is installed, it is installed in a straight line without being affected by the inclination angle of the inclined surfaces 14 and 24, There is an advantage to be prevented.

Although not shown in the drawing, it is also possible to form a gas-tight groove for inserting the hermetic member 92 on the joint surface at which the upper and lower protection blocks 10 and 20 are connected in the longitudinal direction.

FIG. 8 is a perspective view showing the entire assembled cable protection block according to another embodiment of the present invention, FIG. 9 is a structural view illustrating the assembled cable protection block according to another embodiment of the present invention, and FIG. 11 is a configuration diagram illustrating an airtight groove and a hermetic member of a prefabricated cable protection block according to another embodiment of the present invention.

The prefabricated cable protection block according to another embodiment of the present invention includes a plurality of channel grooves 12 to accommodate the cable protection tube 1 between the upper and lower protection blocks 10 and 20 extended in the longitudinal direction and the extended protection block 100 The upper and lower protection blocks 10 and 20 and the extended protection block 100 are formed by a pair of inclined surfaces 14 and 24 and 104 The inclined surfaces 14, 24 and 104 of the upper and lower protection blocks 10 and 20 and the extended protection block 100 are provided on the other upper and lower sides The bosses 40 and 40 are formed by combination with the protection blocks 10 and 20 and the inclined surfaces 14 and 24 of the extended protection block 100, (30) so that a binding force acts between the upper and lower protection blocks (10, 20) by the sliding motion of the inclined surfaces (14, 24).

At this time, the pair of protection blocks 10, 20, and 100 are formed such that the slopes of the thicknesses of the protection blocks 10, 20, and 100 are symmetrical with respect to the center portion.

The protection blocks 10, 20 and 100 are fixed to the left and right positions by engagement of the guide protrusion 54 and the guide groove 52 formed in the longitudinal direction on the inclined surface.

The protection blocks 10, 20 and 100 are provided with a strip-shaped cutting line 60 at a boundary where a pair of slopes meet.

In addition, the protection block 10, 20, 100 may be provided with a block fit block 70 at the end or a cover block 80 with the bottom open to receive the protection block, And a mortar is injected into the inside of the mold.

As shown in FIG. 11, airtight grooves for inserting the airtight member 92 are formed on the joining surfaces of the protective blocks 10, 20, and 100 in the lamination direction and the longitudinal direction, (12), (22), and (102).

Here, the remaining configuration except for the extended protection block 100 is the same as that of the above-described example of the present invention described above, so redundant description will be omitted and the extended protection block 100 will be described in detail.

The extended protection block 100 according to another embodiment of the present invention includes a bottom surface to be laminated to the lower protection block 20 and a concave surface formed by a pair of inclined surfaces 104 on the upper surface of the upper protection block 10, And the bosses 30 are formed in the bosses 40. The bosses 40 are formed in combination with the inclined surfaces 104 of the other extended protection blocks 100 in which the one inclined surfaces 104 of the extended protection blocks 100 are adjacent to each other in the longitudinal direction .

For example, the extension protection block 100 includes a channel groove 102 formed at a position corresponding to the channel grooves 12 and 22 of the upper and lower protection blocks 10 and 20 so that the cable protection pipe 1 is accommodated The bar and channel grooves 102 are formed in a hemispherical shape so that the upper and lower protection blocks 10 and 20 are formed to accommodate the cable protection tube 1 by forming a space in a concentric shape when the laminated layers are formed.

The inclined surfaces 104 formed at the ends connected to each other in the longitudinal direction of the bulging portion 40 of the extended protection block 100 are in contact with each other and protrude in the shape of "^" And is provided to engage with the engaging portion 30 of the upper and lower protection blocks 10 and 20.

A plurality of upper and lower protection blocks 10 and 20 and an extended protection block 100 are stacked and engaged in a staggered manner by the bare metal coupling part 40 and the engraved coupling part 30 in the longitudinal direction, (10), (20) and (100) are linked together in a complementary manner.

That is, the burying part 40 is received in the engraved fastening part 30 and the binding force between the upper and lower protection blocks 10 and 20 and the extended protection block 100 is reduced by the sliding motion of the inclined surfaces 14 and 24 . Therefore, when the upper and lower protection blocks 10 and 20 and the extended protection block 100 are stacked, the inclined surfaces 14, 24 and 104 are engaged with each other at an oblique angle, The upper and lower protection blocks 10 and 20 extended in the longitudinal direction and the extension protection block 100 are continuously brought into tight contact with each other so as to be in close contact with each other, The binding force of the protection blocks 10, 20 and 30 is firmly maintained even after the construction is not applied.

8 to 10 illustrate a state in which one extended protection block 100 is applied. However, the extended protection block 100 may be further applied as shown in FIG. 10 according to the number of cables installed, It is also possible to extend the configuration.

10: upper protection block 20: lower protection block
12, 22: channel grooves 14, 24: inclined surface
30: Acceptance of intaglio angle part 40:
1: Cable shield 2: Manhole

Claims (7)

A plurality of channel grooves 12 and 22 are formed so as to receive the cable protective pipe 1 between the upper and lower protection blocks 10 and 20 which are extended in the longitudinal direction,
The upper and lower protection blocks 10 and 20 are provided with a concave engaging portion 30 formed by a pair of inclined surfaces 14 and 24 on a joint surface to be laminated and interposed,
One of the inclined surfaces 14 and 24 of the upper and lower protection blocks 10 and 20 is formed by combining with the inclined surfaces 14 and 24 of the other upper and lower protection blocks 10 and 20 adjacent to each other in the longitudinal direction, The fastening portion 40 is formed,
The embossed fastening part 40 is received in the engraved fastening part 30 and is provided so that a binding force acts between the upper and lower protection blocks 10 and 20 by the sliding motion of the inclined surfaces 14 and 24. [ Cable protection block. A plurality of channel grooves 12, 22 and 102 are formed so as to receive the cable protective pipe 1 between the upper and lower protection blocks 10 and 20 extended in the longitudinal direction and the extended protection block 100,
The upper and lower protection blocks 10 and 20 and the extended protection block 100 are provided with a concave engaging portion 30 formed by a pair of inclined surfaces 14,
One of the slopes 14, 24, and 104 of the upper and lower protection blocks 10 and 20 and the extended protection block 100 includes the upper and lower protection blocks 10 and 20 adjacent to each other in the longitudinal direction, Forming a relief coupling 40 in combination with the slopes 14, 24 and 104 of the block 100,
The embossed fastening part 40 is received in the engraved fastening part 30 and is provided so that a binding force acts between the upper and lower protection blocks 10 and 20 by the sliding motion of the inclined surfaces 14 and 24. [ Cable protection block. 3. The method according to claim 1 or 2,
Wherein the protection block is fixed to the left and right positions by engagement of the guide groove (52) formed in the longitudinal direction on the inclined surface and the guide protrusion (54). 3. The method according to claim 1 or 2,
Wherein the protection block is provided in a pair so that the inclined surfaces having a reduced thickness toward the center portion of the protection block are symmetrical with respect to the both end portions. 3. The method according to claim 1 or 2,
Characterized in that the protective block is provided with a strip-shaped cutting line (60) at the boundary where a pair of slopes meet. 3. The method according to claim 1 or 2,
The protective block may be provided with a prefabricated fitting block 70 at an end thereof or with a cover block 80 opened at the bottom to receive the protection block and injecting mortar into the interior through the injection port 82 Features a prefabricated cable protection block. 3. The method according to claim 1 or 2,
Characterized in that airtight grooves for inserting the airtight member (92) are formed on the joint surfaces where the protection blocks are laminated and connected in the longitudinal direction, and the airtight grooves are provided in parallel with the channel grooves.
KR1020150050622A 2015-04-10 2015-04-10 Prefabricated cable protection block KR101677050B1 (en)

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KR1020150050622A KR101677050B1 (en) 2015-04-10 2015-04-10 Prefabricated cable protection block

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KR101677050B1 KR101677050B1 (en) 2016-11-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180056439A (en) * 2016-11-18 2018-05-29 일신광통신 (주) A holder for Optical cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940003226Y1 (en) * 1991-08-20 1994-05-16 박병호 Fabricated culvert
KR200157899Y1 (en) * 1997-05-07 1999-10-01 이석태 Fabricated culvert formed connection
KR20090109517A (en) * 2009-09-17 2009-10-20 조희용 Assembly type bicycle block for stairs
KR20090117852A (en) * 2008-05-10 2009-11-13 이재경 Power line cable block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940003226Y1 (en) * 1991-08-20 1994-05-16 박병호 Fabricated culvert
KR200157899Y1 (en) * 1997-05-07 1999-10-01 이석태 Fabricated culvert formed connection
KR20090117852A (en) * 2008-05-10 2009-11-13 이재경 Power line cable block
KR20090109517A (en) * 2009-09-17 2009-10-20 조희용 Assembly type bicycle block for stairs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180056439A (en) * 2016-11-18 2018-05-29 일신광통신 (주) A holder for Optical cable

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