KR20170014316A

KR20170014316A - Multi-tube cables

Info

Publication number: KR20170014316A
Application number: KR1020150107433A
Authority: KR
Inventors: 김병옥; 양지수
Original assignee: 주식회사 디에스아이
Priority date: 2015-07-29
Filing date: 2015-07-29
Publication date: 2017-02-08

Abstract

The present invention relates to a technology for a corrugated optic duct (COD) for a cable used to embed the cable for communications or electricity under the ground. When CODs for a cable are connected and constructed under the ground, a user can check inner ducts to be joined in an easy manner and thus can rapidly perform work processes, and the user, a worker, can check joining portions of the inner ducts in an easy manner, cut the joining portions, and join and install the CODs using a connector. Therefore, the COD has excellent workability and can reduce a work time. The COD for a cable of the present invention includes a plurality of inner ducts in which a cable is inserted and an outer duct formed to cover the inner ducts. The inner ducts are intermittently joined to an inner wall of the outer duct in a lengthwise direction. The COD for a cable comprises: recognition units which are formed in the inner ducts to enable the worker to distinguish the respective inner ducts; and a display unit which displays joining portions of the inner ducts on the outer circumference of the outer duct.

Description

Multiple tubes for cables {Multi-tube cables}

The present invention relates to a corrugated optic duct (COD) used for embedding a communication or electric cable in the ground. More specifically, the present invention relates to a COD And the connecting portion of the inner pipe can be easily identified. Therefore, when connecting multiple pipes for the cable in the ground, it is possible to easily confirm the inner pipe connected to each other and the operation can be continued, Is easily identified and cut and then connected to each other by using a connector so that the workability is excellent and the working time can be shortened.

In general, communication or electric lines located in urban areas are not only harmful to the city's aesthetics, but they also instill a sense of disinclination to the residents. Especially, the transmission towers and transmission lines that cross the school facilities and provide them with psychological anxiety and pleasant educational environment It is the situation that inhibits.

Therefore, in recent years, by embedding the communication or electric cable in the ground, it is possible not only to enhance the appearance of the city but also to improve the view of the road and the traffic safety, and to use the coverage widely, It provides walking space.

Recently, a corrugated optical duct (COD) used for burying a communication or electric cable in the ground has been provided with a plurality of (three to six) inner tubes 10 And an outer tube 20 which covers the inner tube 10 and protects it from earth pressure or external force. The outer tube is formed into a bell-shaped tube in order to enhance durability and flexibility.

These cables are formed through an extruder, then rolled up to a length of approximately 500 to 1000 m to be transported to the work site. In order to prevent twisting and twisting of the multiple inner tubes inserted into the outer tube during the construction work, A plurality of inner pipes are intermittently thermally fused to the inner wall, and the pipes are connected to each other at the work site according to the construction length to be buried in the ground.

In case of connecting multiple tubes for conventional cables, the ends of multiple tubes are usually connected to each other by using a connector. In the connecting work of multiple tubes, the operator cuts the joint portion of the inner tube by a cutting machine, And the connection operation is completed.

In the connecting work of multiple pipes, the joint part of the inner pipe is cut and the cut part is connected by the connector. In the case of the multiple pipe, since the inner pipe of the inner pipe is fixed to the inner wall of the outer pipe by heat fusion, This is because the inner tube is not flowing and is easily fitted in the connector and thus the workability is excellent.

Korean Patent No. 10-0773083 (multiplex pipe for cables) has been proposed as a representative prior art of a multi-pipe for a cable which is conventionally installed to bury a communication or electric cable in the ground.

In the above-mentioned prior art, the outer tube is spirally wound in a spiral shape with at least one elongated waveguide type and at least one shallow softer waveguide type in a longitudinal direction, and an inner waveguide type Wherein the outer surface of the inner tubes is welded to the inner surface of the outer tube through the joints so that the outer surface of the inner tubes is welded to the inner surface of the outer tube, And are bonded and fixed at intervals.

The prior art prevents the inner tubes from flowing in the outer direction in the longitudinal direction to prevent the inner tubes from escaping and facilitates handling and construction since the outer appearance is smoothly moved and the outer appearance is easily released from the inner tubes, The connection connection operation of the pipe can be performed quickly and efficiently.

However, in the above-mentioned prior art, when multiple pipes for cables are connected to each other in the ground, since an operator can not distinguish a plurality of pipes from each other in a cable multi-pipe, There is a problem that the working time is delayed.

In addition, in the above prior art, when the multiple pipes are connected to each other at the work site according to the construction length of the cable multi-pipe, the operator can not easily check the joint portion of the inner pipe in the multi- There is a problem that the workability is remarkably lowered and the working time is delayed.

Korean Patent No. 10-0773083. Korean Patent No. 10-0875279. Korean Patent No. 10-1173460. Korean Patent No. 10-1491008.

The present invention relates to a conventional multi-pipe for cables, in which a plurality of internal pipes can not be individually discriminated by a worker when multiple pipes are connected to each other, In order to solve the problems of delaying the working time, there has been proposed a technique in which a recognition unit is formed in the inner pipe so that an operator can easily identify a plurality of inner pipes, It is aimed to provide a pipe.

In addition, the present invention can easily confirm internal pipes connected to each other when a multi-pipe for cable is connected to the ground, and can perform the cutting operation easily by checking the joint portion of the inner pipe, The present invention provides a multi-tube for a cable which not only has excellent workability as a result of construction of multiple tubes connected to each other, but also shortens the working time.

The present invention has been made to solve the above-

A cable multi-tube which is intermittently bonded along the longitudinal direction to an inner wall of an outer tube, comprising: a plurality of inner tubes into which cables are inserted; an outer tube formed to surround the plurality of inner tubes; A recognition unit configured in the inner tube so as to be able to distinguish each of them; And a display portion for displaying the joint portion of the inner tube at the outer periphery of the outer tube.

Further, as an embodiment of the present invention, the recognition unit is configured to be distinguished from each of a plurality of inner pipes, and the outer periphery of the inner pipe is indicated by the number of lines.

Further, as an embodiment of the present invention, the recognition unit is configured to be distinguished from a plurality of inner pipes, and a plurality of inner pipes are configured with different colors.

Further, as an embodiment of the present invention, the display section is characterized in that the display section is formed on the outer periphery of the outer tube so that the inner tube is located on the outer side of the joint part where a plurality of inner tubes are intermittently thermally welded.

In the embodiment of the present invention, since the recognition unit is formed in the inner pipe so that the operator can separate a plurality of inner pipes from each other in the multiple pipes, when connecting multiple pipes for the cable in the ground, So that the workability is very excellent, and not only the working time is shortened, but also the inner tubes can be accurately connected to each other.

In addition, in the embodiment of the present invention, since the display unit is configured so that the operator can easily confirm the joint portion of the inner pipe in the multiple pipe for cable, the operator can easily confirm the joint portion of the inner pipe to perform the cutting operation, As the tubes are connected to each other, the workability is excellent and the working time is shortened.

1 is a perspective view showing a conventional multi-tube for a cable;
Fig. 2 is a front sectional view of a main portion of a conventional multi-tube for a cable. Fig.
3 is a side cross-sectional view showing a conventional multi-tube for a cable.
4 is a photograph showing a conventional multi-tube for a cable.
Fig. 5 is a perspective view of a main part showing a multiple tube for a cable in the present invention. Fig.
FIG. 6 is a front view of a recessed portion showing an inner tube in the present invention. FIG.
7 is a cross-sectional view of a recessed portion showing an inner tube in the present invention.
8 is a perspective view showing a multiple tube for a cable in the present invention.
Fig. 9 is a front view of a main part showing a multiple tube for a cable in the present invention. Fig.
Fig. 10 is a front view of a main part showing an embodiment of the display unit in the present invention. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. A cable multi-tube in which an inner tube 10 is intermittently joined to an inner wall of an outer tube 20 along a longitudinal direction thereof. The inner tube 10 is divided into a plurality of inner tubes 10, (40); And a display unit (50) for displaying a joint portion of the inner tube (10) on the outer periphery of the outer tube (20).

In the main structure of the embodiment, multiple tubes are known in the prior art. In the multiple tubes, as shown in Figs. 1 to 4, a plurality of (3 to 6) inner tubes 10 into which cables are inserted extend in the longitudinal direction And an outer tube 20 for protecting the plurality of inner tubes 10 from earth pressure or external force is extruded on the outer surface of the inner tube 10 along the longitudinal direction and the outer tube 20 is formed into a spiral tube It is preferable to be extrusion-molded.

A plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 along the longitudinal direction to form a bonding portion 30. The plurality of inner tubes 10 are bonded to the outer tube 20 The inner tube 10 is prevented from being twisted or twisted in the construction work.

The plurality of inner tubes 10 are extruded in the longitudinal direction through the first extruder in the manufacturing process and then transferred to the second extruder so that the outer tube 20 is spirally formed on the outer surface of the inner tube 10, And the multiple tubes are usually manufactured to a length of 500 to 1000 m.

In the main configuration of the embodiment, the recognition unit 40 is a function for easily distinguishing each of a plurality of inner pipes from multiple pipes by the operator, and the recognition unit 40 includes a plurality of inner pipes (10), and the number of lines may be respectively indicated by the number of lines on the outer periphery of the inner tube (10), or a plurality of inner tubes (10) may be formed by different colors.

The recognition unit 40 displayed on the inner pipe 10 as the number of lines may be represented by 1 to 5 according to the number of the inner pipes 10 on the outer circumference of the inner pipe 10, And is painted and displayed on the outer periphery of the inner tube 10 in the extrusion molding process of the inner tube 10. [

On the other hand, the recognition unit 40, which is indicated by the number of lines in the inner tube 10, is displayed in the longitudinal direction on the outer periphery of the inner tube 10, Is preferably displayed.

The recognition unit 40 having a plurality of inner tubes 10 of different colors is constructed in a different color according to the number of the inner tubes 10. In the extrusion molding process of the inner tubes 10, ) May be painted in different colors or may be extruded by injecting paints of different colors into the extruder during the extrusion molding process so that the colors of the inner pipe 10 are different from each other.

In the main configuration of the embodiment, the display portion 50 formed at the outer periphery of the outer tube 20 is a function for the operator to easily confirm the joint portion of the inner tube 10 with the naked eye, As shown in Fig. 10, is formed on the outer circumference of the outer tube 20 such that a plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 and positioned outside the bonded portion 30.

Conventionally, in the conventional cable multi-tube, the joint portions 30 in which a plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 are formed at intervals of about 50 to 200 cm according to specifications of the cable multi- And the display portion 50 is also formed at a constant interval B on the outer periphery of the outer tube 20. [

As a prior art in which a plurality of inner tubes 10 are intermittently thermally welded to an inner wall of an outer tube 20 in a conventional multiple tube for a cable, the applicant of the present invention has proposed the Korean Patent No. 10-1457134 Heating apparatus), No. 10-1457136 (internal heating apparatus for multiple pipes for cables).

Meanwhile, in the conventional cable multi-tube, the joint portions 30, in which the plurality of inner tubes 10 and the outer tubes 20 are thermally fused, are formed to have a width of approximately 10 to 50 cm in accordance with specifications of the cable multi- 50) is preferably formed to have a width (A) of about 10 to 50 cm at the outer periphery of the outer tube 20. [

The display unit 50 is a function for recognizing the position of the jointed portion of the inner tube 10 by the operator. The display unit 50 includes a connection portion 30 The outer periphery of the outer tube 20 is positioned at the center of the width of the outer tube 20.

As shown in FIG. 10, the display unit 50 can display any one of a line having various colors, a name of a manufacturer, or a logo of a manufacturer, and displays the logo of the manufacturer together with the logo You may.

When the display portion 50 of the manufacturer is formed as an embodiment of the display portion 50, the display portion 50 may be displayed between the joining portion 30 and the joining portion 30 or may be displayed between the joining portion 30 and the starting point of the joining portion 30, Or at the end of the joint 30 to indicate the manufacturer's trade name.

Accordingly, when multiple pipes for cables are connected to each other, the operator can easily recognize the joint portion 30 of the inner pipe 10 by confirming the display portion 50 displayed on the outer periphery of the outer pipe 20, The connection construction work can be easily performed.

In the embodiment of the present invention constructed as described above, since the recognition unit is formed in the inner pipe so that the operator can easily identify a plurality of inner pipes, the inner pipe connected to each other can be easily identified and the operation can be continued, It is possible not only to shorten the working time but also to prevent a work error by connecting each of the plurality of inner pipes accurately.

Further, in the embodiment of the present invention, since the display unit is configured so that the operator can easily confirm the joint portion of the inner pipe in the multiple pipe, the operator can easily identify the joint portion of the inner pipe and cut the pipe with the cutter, So that not only the workability is excellent but also the working time can be shortened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It is possible to carry out various changes in the present invention.

10: inner tube 20: outer tube
30: joint part 40: recognition part
50:

Claims

A plurality of inner tubes 10 into which the cables are inserted, an outer tube 20 formed to surround the plurality of inner tubes 10 and an outer tube 20 interposed intermittently along the longitudinal direction on the inner wall of the outer tube 20 In a multi-tube for a cable,
A recognition unit 40, each of which is formed in the inner tube 10 so that the operator can distinguish the plurality of inner tubes 10; And
And a display unit (50) for displaying a joint portion of the inner tube (10) on the outer periphery of the outer tube (20).

The method according to claim 1,
The recognition unit (40)
Wherein the plurality of inner tubes (10) are configured to be distinguished from each other, and are indicated by the number of lines on the outer periphery of the inner tube (10).

The method according to claim 1,
The recognition unit (40)
Wherein the plurality of inner tubes (10) are configured to be distinguished from each other in a plurality of inner tubes (10), and the plurality of inner tubes (10) are configured in different colors.

The method according to claim 1,
The display section (50)
Wherein the outer tube is formed on the outer periphery of the outer tube so that a plurality of inner tubes are positioned on the inner wall of the outer tube to be located outside the bonded portion which is intermittently thermally welded.

The method according to claim 1,
The display section (50)
Characterized in that a plurality of inner tubes (10) are formed between the joint part (30) and the joint part (30) which are intermittently thermally welded to the inner wall of the outer tube (20).

The method according to claim 1,
The display section (50)
Characterized in that it is composed of any one of a line having various colors, a name of a manufacturer, and a logo of a manufacturer.