KR102033110B1 - Cable installation assisting apparatus and cable installation method using the same - Google Patents

Abstract

The present invention relates to a cable installation assisting device which is located between an underground wiring pipe and a cable when installing a cable, and a cable installation method using the same. The cable installation assisting device comprises: a main body formed by alternately connecting a plurality of male joints having a first hollowness and a plurality of female joints having a second hollowness; and a fixing unit fixing a cable inserted into a cable accommodation space formed by the first hollowness and the second hollowness. The first female joint is arranged between a first male joint and a second male joint. The first male joint is hinged to the first female joint to enable a rotational movement based on a first axis. The second male joint is hinged to a second female joint to enable the rotational movement based on a second axis orthogonal to the first axis.

Description

CABLE INSTALLATION ASSISTING APPARATUS AND CABLE INSTALLATION METHOD USING THE SAME}

The present invention relates to a cable laying aid device and a cable laying method for guiding a cable laying in a underground pipeline.

In general, an optical fiber cable (optical fiber cable) is a cable that transmits the electrical signal to a light signal through the glass fiber, also called an optical fiber cable. The optical fiber is a thin, flexible cylindrical glass fiber that guides light in the infrared region, and is composed of a core, clad, and coating layer.

Known index of refraction is slightly higher than cladding layer, it is a very thin concentric glass fiber, which is the area where light passes through the total reflection of light signal in the center, and cladding is located concentrically around core and protects light signal entering the core layer. The angle of the light incident to the layer is propagated to the core layer so as not to leak the totally reflected signal that is greater than the critical angle. For this reason, the clad layer glass fiber is a concentric type with a slightly lower refractive index than the glass fiber of the core layer. It is made of fiberglass and surrounded by cores. The coating is located on the outermost layer of the optical fiber configuration and is coated with a material such as ultraviolet (UV) curable acrylate to improve handleability such as moisture, abrasion and breakage.

An optical cable transmits a signal-coded ray to internal reflection, which has a higher data rate than the other wired transmission media due to its wider bandwidth. In addition, since the size and weight are small, the supporting structure can be reduced in size and transmitted in the form of light, thereby preventing external interference such as impact noise and crosstalk. It is widely used in local area and wide area network, long distance communication, military use, and subscriber line.

When using one wavelength for one fiber, the data rate is up to 2.5Gbps (Gigabit / s). However, by using wavelength division multiplexing (WDM) technology, multiple wavelengths can be transmitted simultaneously to increase the transmission speed. Recently, ultra-high-density wavelength division multiplexing (UDWDM) technology has been developed that provides transmission speeds of several hundred Gbps to an optical cable.

Optical cables are widely used to transmit electric and electronic signals of televisions, computers, telephones, and the like, and are particularly attracting more and more attention because they can transmit vast amounts of information faster than conventional coaxial cables. However, the optical fiber used in such an optical cable has a small diameter, is weak in impact and particularly susceptible to damage by contact with moisture, and thus an optical cable having a structure capable of protecting the optical fiber from moisture and external shocks is urgently needed. There has been a demand, and thus optical cables having various structures have been developed.

On the other hand, the optical cable is buried in the underground pipeline, the underground pipeline serves as a protective film to protect the communication line from the soil and water in the underground.

The optical cable laying work is to fill a large diameter facade between the manhole and the manhole in the ground, insert a small diameter cable guide tube into the exterior, and then insert the cable inside the cable guide tube. Is performed. In the conventional optical cable installation work proceeding in the above work order, the cable guide tubes of small diameter are twisted along the length of each other in contact with each other in the inside of the large diameter when the cable guide tube is inserted into the cable guide tubes. In many cases, the cable guide tube can no longer be inserted even if the cable is not sufficiently filled.

The conventional communication line appearance has a problem that the cable guide tubes cannot be sufficiently inserted into the inner space. In recent years, as the Internet communication network construction project has been extensively implemented, corrugated optic ducts (CODs) are being provided to supplement the inefficiency and construction methods of existing installation methods.

Such COD can be found in Korean Patent Registration No. 1409246 and Japanese Laid-Open Patent Publication No. 2005-065406 (2005.3.10.).

The COD has a spiral appearance and is installed inside the exterior, and a plurality of (3 to 6) cable guide tubes through which the cable passes into the interior are integrally formed. This high not only good impact and compressive strength, but also has the flexibility to bend within a certain radius during construction, there is an advantage that the bending installation according to the height difference of the floor. In addition, since the exterior protects the inner tube, the cable installed inside the inner tube can be more safely protected, and is currently widely used in the construction of optical cables.

However, in order to bury the cable laying work as well as the conventional cable laying work, the cable should be inserted into the inside of the cable guide tube in order to install the cable, and the cable traction line is first inserted into the already completed cable guide tube. After the cable is connected to one end of the cable traction line, the cable is pulled to install the cable into the cable traction line.

However, because the cable guide is very long and the traction line is flexible, it is very difficult and cumbersome and time-consuming to insert into the cable guide due to the lack of lagging and straightness.

To facilitate the insertion of the traction line, the end of the traction line is woven into a circular shape, and then the high-pressure air is supplied using a separate air pressure supply device while the cable guiding pipe is inserted into the other side of the cable guide tube. Although a discharge method may be used, in such a case, a circular towing tip passes through the cable guide tube and generates a strong friction force, and it is very often caught in the inner wall of the cable guide tube along with the trailing line. There have been various problems such as having to start from the beginning again.

Furthermore, when the optical cable is installed in the underground pipeline that is already installed and aged, there is a problem that the optical cable is damaged due to an external impact caused by foreign matter inside the underground pipeline.

For this reason, in the case of the optical cable, it is impossible to install by the mechanical towing, and the installation by the human towing is performed. Laying of manpower is a major factor in the construction period and increase in construction costs.

It is an object of the present invention to solve the above and other problems.

An object of the present invention is to provide a cable laying helper and a cable laying method using the same that can safely protect the cable when laying the cable.

Furthermore, the present invention provides a cable laying helper for guiding an optical cable to a mechanical tow and a cable laying method using the same.

According to the present invention there is provided a cable laying aid and a cable laying method.

The cable laying apparatus assists the mechanical towing when laying the underground pipe of the cable.

The cable laying device may include a male node and a female node rotatably coupled to each other about one axis to form a cable accommodation space inwardly in a coupled state; And a fixing part for fixing the cable inserted into the cable accommodation space.

According to one embodiment, the body is formed by at least one male node and at least one female node, the body, the male node and the female node may be connected in the cross direction and extend in the longitudinal direction.

According to an embodiment, the first female node is disposed between the first male node and the second male node, and the first male node is hinged to the first female node to enable rotational movement about the first axis. The second male node may be hinged to the second female node so as to be rotatable about a second axis perpendicular to the first axis.

According to an embodiment of the present disclosure, the cable laying assistance device may further include an outer wheel positioned on an outer circumferential surface of at least one of the male node and the female node to be in contact with the underground pipeline.

The cable laying aid is located between the underground pipeline and the cable during cable laying.

The cable laying helper includes: a body formed by crossing a plurality of nodes having a hollow and a plurality of female nodes having a hollow; And a fixing part for fixing the cable inserted into the cable receiving space formed inside the main body, wherein the first female node is disposed between the first male node and the second male node. A hinge is coupled to the first female node to enable rotational movement about a first axis, and the second male node is hinged to the second female node to enable rotational movement about a second axis orthogonal to the first axis. Can be combined.

According to an embodiment of the present disclosure, the first male node is disposed between the first female node and the second female node, and the first male node includes: a male column body having a circular columnar shape having a hollow; A pair of first protrusions extending from one end of the male node body so as to be coupled with the first female node with respect to the first axis; And a pair of second protrusions extending from the other end of the male node body so as to be coupled with the second female node with respect to the second axis.

According to an embodiment of the present disclosure, the cable laying assistance device may further include an outer wheel positioned on an outer circumferential surface of the main body to be in contact with the underground pipeline.

According to an embodiment of the present disclosure, the cable laying assistance device may further include a pressing unit that acts one-way pressing force on the outer wheel.

According to an embodiment of the present disclosure, the cable laying assistance device may further include a blade configured to prevent foreign substances introduced into the underground pipe passage from being introduced into the outer wheel.

According to one embodiment, the cable laying helper, cable laying helper further comprises an inner wheel which is located on the inner peripheral surface of the main body to be in contact with the cable.

On the other hand, the present invention provides a cable laying method using a cable laying helper according to at least one embodiment described above.

The cable laying method includes inserting one end of the cable into the cable receiving space of the cable laying aid; Fixing the cable inserted into the cable receiving space to the fixing part; Laying the cable laying helper in which the cable is inserted in the underground pipeline; And separating the cable laying aid from the cable.

According to an embodiment of the present disclosure, the cable is an optical cable, and the cable laying assist device into which the cable is inserted may be installed in the underground pipeline by a towing machine.

According to one embodiment, the step of inserting the cable into the cable laying helper, the step of connecting a few nodes and female nodes; And inserting the cable into the cable receiving space formed by the connection of the male and female nodes.

Referring to the effects of the cable laying helper and the cable laying method according to the present invention.

Since the cable laying helper is pulled instead of the cable, it is possible to lay the machine tow when laying the optical cable, which can shorten the construction period, reduce the construction cost, and securely install the optical cable so that stable maintenance is possible. Maintenance costs can be reduced.

Since the cable is not in direct contact with the inner surface of the underground pipeline, it is possible to apply a mechanical traction device rather than a traction method even when installing a cable that is fragile, such as an optical cable. Can be prevented.

1 is a conceptual diagram illustrating a problem occurring when installing a cable according to a conventional method.
Figure 2 is a conceptual diagram for explaining the relationship between the cable laying helper, the cable and the underground pipe according to the present invention
Figure 3 is an exemplary view for explaining an embodiment of a cable laying helper according to the present invention
4 is an exemplary view for explaining a few measures
5 is an exemplary view for explaining an arm node
6 and 7 are exemplary views for explaining a method of securing a cable to a cable receiving space of a cable laying aid.
8 and 9 are a cross-sectional view and an illustration for explaining the wheel provided in the cable laying helper according to an embodiment of the present invention
10 is an exemplary view for explaining a blade for protecting the outer wheel;
11 is a cross-sectional view for explaining a pressing unit for pressing the outer wheel in one direction.
12 is a flowchart illustrating a cable laying method according to an embodiment of the present invention.
13 is an exemplary view for explaining the installation method of FIG.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present disclosure does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or combinations thereof.

The mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant, a portable multimedia player, a navigation, a slate PC , Tablet PCs, ultrabooks, wearable devices, such as smartwatches, glass glasses, head mounted displays, and the like. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, digital signages, etc., except when applicable only to mobile terminals. will be.

1 is a conceptual diagram illustrating a problem occurring when installing a cable according to a conventional method, and FIG. 2 is a conceptual diagram illustrating a relationship between a cable laying assist device, a cable, and a underground pipe line according to the present invention.

Referring to FIG. 1, when the underground pipeline 1 becomes aging, rain water leaks, lime 3 is trapped, and cracks 3 occur to block the pipeline, thereby causing difficulty in laying the cable 10 in the underground pipeline 1. . In particular, in the case of an optical cable that is weak to external impacts among the cables, an optical cable may be damaged by external pulling or friction of an external surface during the installation of a mechanical dog, and a human dog laying method is mainly used. This increases the construction period and the cost of construction.

The cable laying helper 100 according to the present invention is used when laying the cable 10 in the underground pipeline 1.

The cable 10 is inserted into a cable receiving space formed inside the cable laying aid 100. Accordingly, when the cable 10 is laid, the cable laying assist device 100 is disposed between the underground pipeline 1 and the cable 10.

The cable 10 is fixed to the inside of the cable laying helper 100, by pulling the cable laying helper 100 from the outside can safely install the cable 10 in the underground pipeline (1).

For example, as shown in Figure 2, one end of the cable laying aid 100 is inserted cable 10 is connected to the traction line, by pulling the traction line cable 10 to the underground pipeline (1) ) Can be installed cable laying aid 100 is inserted.

Foreign matter in the underground pipeline 10 is removed by the cable laying helper 100, the external force applied during the installation is dispersed by the cable laying helper 100, there is an effect that the cable damage is prevented.

3 is an exemplary view for explaining an embodiment of a cable laying helper according to the present invention. Furthermore, FIG. 4 is an exemplary view for explaining several nodes, and FIG. 5 is an exemplary view for explaining female nodes.

Cable laying aid 100 is made to move vertically or vertically so that cable laying is possible even when the underground pipe (1) is bent vertically or horizontally. To allow this movement, the cable laying aid 100 is composed of several nodes 310, 320. Each node has a connecting portion (312., 314) constituting a joint in connection with the other node, and is hinged through the connecting portion to move the hinge around one axis.

Specifically, the cable laying helper 100 is formed by a main body and a plurality of female nodes having a first hollow and a plurality of female nodes having a second hollow and the first hollow and the second hollow. And a fixing part for fixing the cable inserted into the cable receiving space.

As shown in FIG. 4, the male node 310 is a male column body having a first pillar shape having a first hollow, and a pair of first extending from one end of the male node body to be coupled with the first female node and white paper. And a protrusion 312 and a pair of second protrusions 314 extending from one end of the male body so as to be coupled with the second female node. Each protrusion may be provided with a connecting portion 316 for connecting with the female node.

The first protrusion 312 extends facing each other at one end of the male node body. For example, it may face in the x-axis direction and extend in the + direction of the z-axis.

The second protrusion 314 extends facing each other at one end of the male node body. For example, they may face in the y-axis direction and extend in the − direction of the z-axis.

The lengths of the first and second protrusions 312 and 314 may be variously modified according to embodiments.

The male node 310 is connected to different female nodes, for example, the first male node may be disposed between the first female node and the second female node. The first protrusion 312 of the first male node is coupled with the first female node, and the second protrusion 314 of the first male node is coupled with the second female node.

Due to the structure of the first protrusion 312, the first male node may be rotatable about the first female node about the first axis (eg, the x axis). Furthermore, due to the structure of the second protrusion 314, the first male node may be rotated about the second female node about the second axis (eg, the y axis). With this structure, when the external force pulling the main body is applied, the first few nodes can move vertically or horizontally.

As shown in FIG. 5, the female node 320 is in the form of a circular column having a second hollow, and has a plurality of connecting portions 322a-322d for connecting with different nodes.

For example, the first female node may be disposed between the first male node and the second male node. In this case, the first male node is hinged to the first female node so as to be rotatable about a first axis, and the second male node is rotatable about a second axis orthogonal to the first axis. Is hinged to the second arm node so that

The first and third connectors 322a and 322c of the first female node are connected to the first and third connectors 316a and 316c of the first male node, and the second and fourth connectors 322b of the first female node , 322d is connected to the second and fourth connectors 316b and 316d of the second few nodes.

The first hollow provided by the male nodes may be larger than the second hollow provided by the female nodes. In this case, the protrusion covers the arm node. In contrast, when the second hollow is larger than the first hollow, the female node covers the protrusion. This may be variously modified according to the embodiment.

6 and 7 are exemplary views for explaining a method of fixing a cable in a cable receiving space of the cable laying aid.

The cable laying aid 100 according to the present invention includes fixing parts 600 and 700 for fixing the cable 10 inserted into the cable receiving space formed by the first hollow of several nodes and the second hollow of a female node. May be further provided.

For example, as shown in FIG. 6, when the fixing portion is formed in the female node 320, the female node 320 is a female node body having a second hollow and a center of the second hollow in the female node body. Extension portion 600 may be formed to extend. The cable 10 may be fixed in the cable receiving space by the extension 600.

For another example, as shown in FIG. 7, when the fixing part is formed in the arm node 320, the fixing part may be made of a high-thin structure 700 capable of lashing the cable 10.

8 and 9 are a cross-sectional view and an exemplary view for explaining the wheel provided in the cable laying helper according to an embodiment of the present invention.

An inner wheel 800a may be provided on an inner circumferential surface of the main body including a male node 310 and a female node 320, and an outer wheel 800b may be provided on an outer circumferential surface of the main body.

The inner wheel 800a is positioned on the inner circumferential surface of the main body and makes contact with the cable 10. When the cable 10 is inserted into the cable laying aid 100, the friction force is offset by the inner wheel 800a so that the cable 10 may be easily inserted.

The outer wheel 800b is located on the outer circumferential surface of the main body and makes contact with the underground pipe passage 1. Since the frictional force is reduced by the outer wheel 800b when installing the cable laying helper 100 in the underground pipeline 1, it can be easily installed even in an aging pipeline.

For example, the inner wheel 800a may be provided at the male node 310, and the outer wheel 800b may be provided at the female node 320. For another example, as shown in FIG. 9, both the inner wheel 800a and the outer wheel 800b may be provided at the male node 310 or the female node 320.

The inner wheel 800a and the outer wheel 800b are formed on the inner and outer surfaces of the male node 310 and the female node 320 to move the cable inside the main body and to move the cable inside the underground pipeline 1. The frictional force generated in the area in contact with the movement of the body is reduced.

10 is an exemplary diagram for describing a blade 1060 for protecting the outer wheel 800b.

Cable laying aid 100 according to the present invention may further include a blade 1060 for protecting the outer wheel (800b).

The blade 1060 is configured to prevent foreign matter introduced into the underground pipe passage 1 from flowing into the outer wheel 800b.

When the blade 1060 is divided, the vertical portion 1061 extending vertically in the shape of a rectangular plate, and the inclined portion formed to be inclined away from the main body 1010 as it goes downward from the bottom of the vertical portion 1061 ( 1062 and the lower end of the inclined portion 1062 and is formed along the inclined direction of the inclined portion 1062 and has a blade portion 1063 having a gradually thinner end thickness.

The foreign matter in the underground pipeline 1 is separated through the blade portion 1063 in contact with the underground pipeline 1, and the separated foreign matter is collected in the inclined portion 1062 and the vertical portion 1063.

The foreign matter in the underground pipeline 1 is removed by the blade 1060, and foreign matters are prevented from entering the external wheel to generate frictional force.

11 is a cross-sectional view for explaining a pressing unit for pressing the outer wheel in one direction.

The underground pipeline 1 may have a different width depending on the installation place. The cable laying helper 100 may further include a pressing unit 830 to be easily inserted even in underground pipes 1 having different widths.

The pressurizing part 830 is mounted on the outer circumferential surface of the main body (male and / or female) and acts as a one-way pressing force against the underground pipeline 1 by the outer wheel 840. The pressurizing part 830 may move forward in one direction by applying an operating force by oil pressure to the underground pipe line 1. The outer wheel 840 of the pressing unit 830 adopts a structure that restricts rotation in the other direction while allowing rotation in one direction like a one-way clutch bearing. The outer skin of the outer wheel 840 may be a high wear-resistant urethane material.

The pressing unit 830 is characterized in that to press the underground pipe line 1 by attaching the outer wheel 840 to the pair of pneumatic cylinders 831 disposed in a symmetrical position. The pneumatic cylinder 831 is installed to face the main body, and has an outer wheel 840 at the end of the working rod. Hydraulic pneumatic cylinder 831 is to take one of the hydraulic or pneumatic, and is configured to be connected to the hydraulic generator or pneumatic generator accordingly.

According to the detailed configuration of the present invention, the pneumatic cylinder 831 of the pressing portion 830 is mounted via a hinge in the presence, it characterized in that the elastic force of the spring 833 to the outer wheel 840. In the pneumatic cylinder 831, a hinge is installed at the rear end opposite to the working rod and a spring 833 is installed at the front end. Accordingly, the elastic force of the spring 833 is transmitted to the underground pipeline 1 through the operating rod and the outer wheel 840.

If an overload occurs in the process of moving the underground pipe 1 during laying, the buffer by the spring 833 is performed.

The pressing unit 830 eliminates the clamping that binds the cable at the time of installation, making it easy to use, enabling quick response to various cable thicknesses, and reducing the labor force of the operator in laying wires in a narrow space. .

12 is a flowchart illustrating a cable laying method according to an embodiment of the present invention, and FIG. 13 is an exemplary view for explaining the laying method of FIG. 12.

Referring to FIG. 12, cable laying is performed using the cable laying aid 100 according to the above-described embodiment.

First, the cable 10 is inserted into the cable laying helper 100 (S1210), and the cable is fixed (or pinched) to the cable laying helper (S1230).

One end of the cable 10 to be inserted into the underground pipeline 1 is inserted into the cable receiving space of the cable laying helper 100, and the cable 10 may be fixed by a fixing part provided in the cable receiving space. have.

Insertion of the cable 10 can be made in a variety of ways.

According to an example, the cable 10 may be inserted into the cable laying helper 100 while the cable laying helper 100 corresponding to the length of the underground pipe 1 is completed.

According to another example, while connecting the male node and the female node, the cable 10 is fixed to a cable receiving space formed by the connection of the male node and the female node to connect the cable 10 to the cable laying helper 100. Can also be inserted. That is, as several nodes and female nodes cross-connect, the cable laying aid 100 extends in one direction, and the cable 10 may be inserted by an extended length.

One end of the cable 10 may be connected to one end of the cable laying aid 100.

By inserting the cable 10 at least part of the cable 10 is wrapped by the cable laying aid 100 and the cable 10 is protected from foreign matter.

Next, the cable installation assistance device 100 is inserted into the underground pipe line 1 is inserted (S1230).

Towing cable is connected to one end of the cable laying helper 100, the cable laying helper 100 is inserted into the underground pipeline (1) is inserted cable 10 by the machine or manpower towing the traction line.

Since the optical cable is made of a material that is shock-resistant, such as glass, breakage of the optical cable occurs when installing the machine, the optical cable is installed by manpower laying. Furthermore, a lot of labor is required for laying due to the resistance caused by friction between the underground pipeline 1 and the optical cable.

This wire laying work not only involves a large number of workers but also has a poor working condition due to a narrow working space and high and deep electric converters, which reduces productivity. have.

The fiber cable is laid by releasing the fiber cable by pushing the caterpillar device and pulling the fiber cable with the winch on the opposite side. Or, a feeding type is installed at the cable interruption to help cable feeding.

As shown in FIG. 13, in order to install the optical cable 10 through the underground pipeline 1, a worker directly enters the vertical hole 1310 through a manhole to perform work, and the radius of curvature and the number of power cables to be installed. The caterpillar 1320 and the cable drum 1330 are installed in consideration of the bending portion of the fastener 1310, and a controller 1340 is installed to control the work. Thereafter, the cable 10 is inserted into the cable assisting device 100 and then fixed. The cable laying helper 100 is connected to the turnover rope 1355 (or the pulling line) in the underground pipeline 1, and the cable laying helper 100 is towed by the machine tow.

When mechanical towing is made, tension is applied to the cable laying helper 100, and the tension applied to the cable laying helper 100 is distributed by one or more fixing parts and transmitted to the cable 10. Therefore, there is an effect that the cable breakage due to the tension applied during the mechanical towing is blocked.

Next, the cable laying helper 100 is removed from the underground pipeline 1 (S1250).

After the cable 10 and the cable laying helper 100 are separated, only the cable laying helper 100 may be removed to safely install the cable 10 in the underground pipeline 1.

The present invention described above can be embodied as computer readable code (or an application or software) on a medium on which a program is recorded. The above-described control method of the autonomous vehicle can be realized by a code stored in a memory or the like.

The computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAMs, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and the like. This also includes implementations in the form of carrier waves (eg, transmission over the Internet). The computer may also include a processor or a controller. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (13)

delete delete delete delete Cable laying helper located between underground pipe and cable when laying cable,
A main body having a plurality of nodes having a hollow and a plurality of female nodes having a hollow connected to each other; And
It includes a fixing unit for fixing the cable inserted into the cable receiving space formed inside the main body,
The first female node is disposed between the first male node and the second male node,
The first male node is hinged to the first female node to enable rotational movement about the first axis,
And said second male segment is hinged to said first female segment to enable rotational movement about a second axis orthogonal to said first axis. The method of claim 5,
The first male node is disposed between the first and second female nodes,
The first male node,
Male node body in the form of a circular columnar having a hollow;
A pair of first protrusions extending from one end of the male node body so as to be coupled with the first female node with respect to the first axis; And
And a pair of second protrusions extending from the other end of the male node body so as to be coupled with the second female node with respect to the second axis. The method of claim 5,
And an outer wheel positioned on an outer circumferential surface of the main body to be in contact with the underground pipeline. The method of claim 7, wherein
Cable laying aid further comprises a pressing unit for applying a one-way pressing force to the outer wheel. The method of claim 7, wherein
Cable laying aid device further comprises a blade made to prevent foreign matter introduced into the underground pipe flows into the outer wheel. The method of claim 5,
And an inner wheel positioned on an inner circumferential surface of the main body and in contact with the cable. Inserting one end of the cable into the cable receiving space of the cable laying aid of claim 5;
Fixing the cable inserted into the cable receiving space to the fixing part;
Laying the cable laying helper in which the cable is inserted in the underground pipeline; And
Separating the cable laying aid from the cable and removing the cable. The method of claim 11,
And said cable is an optical cable, and said cable laying aid is inserted into said underground pipeline by a mechanical tow. The method of claim 11,
Inserting the cable into the cable laying helper,
Intersecting male and female nodes; And
And inserting the cable into the cable receiving space formed by the connection of the male and female nodes.

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