KR101447515B1 - Rail used for apparatus and method for installing underground cable - Google Patents

Abstract

The present invention relates to a rail used for an apparatus and a method for installing an underground cable. Specifically, the present invention relates to an apparatus for installing an underground cable, which includes a rail, a connection member (112) to fix the rail to a hanger and a rail support. The apparatus for installing an underground cable according to one example of the present invention includes a rail part installed along a cable installation position in an underground power tunnel; a traction vehicle installed on a rail to tract the cable; a support vehicle mounted on the cable towed by the traction vehicle at a predetermined interval and installed on the rail to support the cable being transferred; and a snake vehicle to install the cable to a plurality of hangers, which are fixed to a wall of the underground power tunnel, by pushing the cable and to perform a snake work. The rail part includes a rail fixed to the hangers to move the traction vehicle, the support vehicle and the snake vehicle; a connection member to fix the rail to one end of the hangers; and a rail support installed at a lower end of the rail located between the hangers to support the rail such that the rail can be horizontally maintained. In order to prevent the slip phenomenon occurring when the traction vehicle and the snake vehicle are moved, the rail is formed with a groove corresponding to a protrusion formed in at least a part of the traction vehicle and the snake vehicle. A shape of the connection member for fixing the rail is determined according to a shape of each hanger connected to the connection member.

Description

Technical Field [0001] The present invention relates to a rail used for mechanized installation equipment and method of an underground cable,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rail used in a mechanized installation equipment and method of an underground cable. Specifically, the present invention relates to mechanized installation equipment including a rail, a bracket 112 for fixing the rail to the hanger, and a rail support.

Generally, a transmission / distribution power cable (hereinafter referred to as a "cable") is installed in a power hole in the ground. In this general installation work (domestic registered Utility Model No. 0263315), as shown in FIG. 1A, a cable 13 wound around a large-sized hub 10 on the ground is supplied into a power port by a laying scaffold 12, The cable 13 in the electric power port was transported along the guide roller 15 while being pulled out by a plurality of fixedly installed caterpillars 14.

1B and 1C, the weight (weight) of the cable 13 is mounted on the fixed caterpillar 14 while the cable 13 is seated on the guide roller 15, The cable 13 is transported along the guide roller 14 by the pulling of the caterpillar 14 and the transported cable 13 is laid on the hanger 16 installed on the power hole wall.

However, in order to transport the heavy cable 13, a large number of the caterpillar 14 and the guide roller 15 must be installed at a short interval, thereby increasing the operation cost. In order to lay the cables 13 transferred in the power sockets on the hangers 16, a large number of workers are arranged in a line and then the cables 13 are lifted up and laid on the hangers 16 Since it was necessary to do the snake work, waste of manpower and manpower was serious. In addition, since the power port is currently manufactured so as to reduce its width while reducing the length of the cable, the installation spacing, the number of installed cables, and the size of the crawler 14 and the guide roller 15 should be taken into consideration in order to install the cable 13, When the power supply line for applying power to the caterpillar 14 is long, the power supply voltage is lowered and power is wasted. . Also, in case of double laying, a large number of caterpillars 14 are required, resulting in an increase in the installation cost.

It is required to develop a cable laying method suitable for the electric power generation environment that is being built as the electric power generation area being built becomes gradually deeper and the length of the cable installation is shortened.

Optimization of the power structure and the enlargement of the cable specification (345 kV, 2,500 mm 2) inevitably lead to a change in the shape of the power sphere and a reduction in the width and a heavy cable.

In addition, the reduction of the power hole width requires the miniaturization and lightening of the cable installation equipment, and the increase in the weight of the cable necessitates a new method for the current workforce-oriented snake operation.

In addition, a method of verifying on-site construction quality will gradually become evident by the extension of the underground transmission construction company.

Therefore, there is a need for a mechanized installation system that eliminates the problem of snake operation by manpower, prevents cable speed, and downtime, and operates it by developing laying equipment and method using rail instead of existing manpower system.

Korea Patent Office Registration Utility Utility Model No. 0263315

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mechanical installation equipment and a construction method of an underground cable to a user.

Specifically, the present invention aims to provide users with mechanized installation equipment and method of underground cables capable of installing cables of all sizes without fluctuation of power sphere width. In the case of the conventional caterpillar laying method, since the caterpillar (width: 700 mm) is installed on the floor of the power hole passage (width: 800 mm), the work passage is narrow (about 100 mm) There was trouble. In the present invention, a cable is installed easily in a narrow electric power area by installing a rail.

The present invention also provides a system capable of mechanized installation and snaking operations at all locations where a cable is to be installed. In the conventional caterpillar laying method, first, a cable is laid on the bottom of the electric power source, and then the cable is lifted to a hanger having a height to be constructed. Then arrange the cable and fix the cable. In other words, it takes a lot of manpower and work time to lift the cable after cable installation and it is an inefficient working method. Therefore, in the present invention, there is no step of raising the cable because the rails are installed at the position where the cable is to be installed, and there is no need to raise the cable, and the snake operation is performed by using the snake power truck, .

Further, the present invention aims at enabling dual installation. A double installation is an installation that includes a section where the cable installation position and cable installation position are different and the cable is pulled out. It is possible to install the existing caterpillar by double laying method. However, when the caterpillar is installed for the double laying and the power line is installed more than 1,000m, the number of equipment and the power supply voltage drop frequently occur. In the development method applied to the present invention, a cable is installed on a rail with a cable trailing carriage while extending the length of an inexpensive rail, thereby solving the problem of voltage drop due to the length of a wire for operating a conventional caterpillar, Can be performed more easily. In addition, it is possible to avoid the place where the cable drum can not be installed due to frequent vertical section and traffic volume, so that it is possible to make a long distance double installation.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

A rail part installed along a position where a cable is to be installed in a power hole related to an example of the present invention for realizing the above-mentioned problems; A towing truck installed on the rail so as to pull the cable while driving itself; A support carriage mounted at a predetermined interval on a cable pulled by the towing carriage and installed on the rail so as to follow the conveyed cable; And a snake bogie mounted on the rail such that the snake operation is accompanied by pushing the cable to a plurality of hanger fixed to a wall in the power shed, the rail breeze comprising: A rail fixed to said plurality of hangers for movement of a support bogie and a snake bogie; A connecting bracket for fixing the rail to one end of the plurality of hangers; And a rail support installed at a lower end of the rail positioned between the plurality of hanger and supporting the rail to keep the rail horizontal. To prevent slip phenomenon occurring while the traction brakes and the snake bogie move, Wherein the rail is provided with a groove corresponding to a projection formed on at least a part of the towing carriage and the snake carriage, The shape of the fixing bracket to be fixed can be determined according to the shape of each of the plurality of hangers to be connected.

The shape of the plurality of hanger includes a hanger shape, a hanger shape, and an I-hanger shape, and the shape of the hinge includes a hinge bracket, a hinge bracket, and a hinge bracket corresponding to the shape of each of the plurality of hanger I-shaped connecting brackets, wherein the hanger shape and the hanger shape are used for 154 kV XLPE cable construction and the I hanger shape can be used for 345 kV XLPE cable construction.

Further, the connecting metal bracket may further include at least one hole for fixing the rail to one end of the plurality of hangers using a fastening bolt, and may correspond to a position of a fastening bolt fixed using the hole So that the height of the rail connected to the connecting metal can be changed by a certain amount.

The rail support may further include a height adjuster installed in the center between the plurality of hanger and capable of changing a height of a rail supported by the rail support.

The traction bogie may include a first power source for driving itself, A first motor; A first gear; And a first driving wheel, wherein the first driving wheel is composed of a pair of upper and lower parts so as to be in contact with the upper and lower surfaces of the rail, and in order to prevent a slip phenomenon between the rail and the first driving wheel A first thread or a first thread groove may be formed on the rail, and a second thread, a second thread groove, or a second thread projection may be formed on the first driving wheel.

The snake truck may further include a second power source for self-driving; A second motor; A second gear; And a second driving wheel, wherein the second driving wheel is composed of a pair of upper and lower parts so as to be in contact with upper and lower surfaces of the rail, A first thread or a first thread groove may be formed on the rail, and a third thread, a third thread groove, or a third thread projection may be formed on the second drive wheel.

Also, the rail may be a straight rail or a curved rail corresponding to the degree of bending of the power sphere, the curved rail may be manufactured to maintain a radius of curvature of a predetermined value or more, And may be a value indicating the degree of curvature at each point on the curved surface or the curve.

The present invention can provide users with mechanized installation equipment and method of underground cable.

Specifically, the present invention can provide a user with a mechanized installation equipment and method of a ground cable capable of installing cables of all sizes without changing the power sphere width.

In addition, the present invention can provide a system capable of mechanized installation and snaking operations at all locations where a cable is to be installed.

In addition, the present invention can provide a user with a mechanized installation equipment and method of a ground cable capable of double laying.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate a preferred embodiment of the invention and, together with the description, serve to provide a further understanding of the technical idea of the invention, It should not be construed as limited.
FIG. 1A is a schematic view showing a cable installation operation in a general underground power section, and FIGS. 1B and 1C are a plan view and a side view, respectively, showing components for transporting and installing cables in a cable installation work of a conventional underground power section.
Fig. 2 is a flow chart of an installation work of an underground cable using a rail.
FIG. 3 is a flowchart illustrating an installation operation of an underground cable according to an example of the present invention, using the drawings.
4 and 5 are operation drawings showing a process of transporting an underground cable to an installation device.
6 is a perspective view schematically showing a traction bogie and a support bogie installed to transport underground cables in a mechanized laying device of an underground cable using rails according to a preferred embodiment of the present invention.
7 shows a concrete example of the installation equipment according to the present invention.
Fig. 8 shows an example of a structure and a photograph of a rail applied to the present invention.
FIG. 9 is a table showing rail specifications and characteristics in relation to the present invention.
10 shows a concrete example of the a-shaped connecting bracket 112 with respect to the connecting bracket 112 to which the present invention is applied.
FIG. 11 shows a specific example of the I-type connecting bracket 112 with respect to the connecting bracket 112 according to the present invention.
12 shows a specific example of the elliptical connecting metal fitting 112 with respect to the connecting metal fittings 112 applied to the present invention.
13 shows a specific example of a rail support according to the present invention.
FIG. 14 is a table summarizing the sizes and specifications of the brackets 112 and the rail supports described with reference to FIGS. 10 to 13. FIG.
Figs. 15A to 15F are views showing a concrete structure of assembling a rail bracket to a hanger in connection with the present invention.
16A and 16B illustrate concrete details of assembling a rail bracket to a hanger hanger according to the present invention.
Figs. 17A to 17F show a specific view of assembling the rail and the rail support in the context of the present invention. Fig.

As described above, in the system proposed in Figs. 1A to 1C, a large number of caterpillar 14 and guide roller 15 are required to be installed at a short interval in order to transfer a cable 13 of a heavy weight, thereby increasing work costs. In order to lay the cables 13 transferred in the power sockets on the hangers 16, a large number of workers are arranged in a line and then the cables 13 are lifted up and laid on the hangers 16 Since it was necessary to do the snake work, waste of manpower and manpower was serious. In addition, since the power port is currently manufactured so as to reduce its width while reducing the length of the cable, the installation spacing, the number of installed cables, and the size of the crawler 14 and the guide roller 15 should be taken into consideration in order to install the cable 13, When the power supply line for applying power to the caterpillar 14 is long, the power supply voltage is lowered and power is wasted. . Also, in case of double laying, a large number of caterpillars 14 are required, resulting in an increase in the installation cost.

It is required to develop a cable laying method suitable for the electric power environment which is constructed as the electric power sphere being built is gradually deepened and the length of the cable laying line is shortened. The reduction of the electric power sphere width is required to reduce the size and weight of the cable laying equipment , And a new method for snake work mainly focusing on manpower is required for the increase in the weight of the cable, and a method for verifying the quality of the site construction is gradually increasing due to the expansion of the underground transmission specializing company. Therefore, Therefore, we propose a mechanized installation system that can eliminate the problems of snake operation by manpower, prevent cable speed, and downtime by developing laying equipment and method using rail instead of existing manpower system.

Fig. 2 is a flow chart of an installation work of an underground cable using a rail.

3 is a flowchart illustrating an installation operation of an underground cable according to an example of the present invention, using the drawings.

4 and 5 are operation drawings showing a process of transporting an underground cable to an installation device.

Referring to FIG. 2, when the cable 200 flows into the electric power tool 300, the leading end of the cable 200 is mounted on the traction truck 120 (S10).

4 and 5, the cable 200 wound around the cable drum is introduced into the electric power tool 300 via the drum caterpillar and the mounting scaffold, and the leading end of the introduced cable 200 is inserted into the rail Is fixed to the crotch 150 of the traction bogie 120 mounted on the trolley 110.

At this time, the rail 110 is installed in the hanger 210 installed in the electric power tool 300 in advance.

Next, the cable 200 is towed (S20) to a position to be installed by the traction bogie 120.

At this time, the traction bogie 120 traverses the cable 200 while moving itself by a combined operation of the first power source 123, the first motor 124, the first gear 125, the first driving wheel 126, .

Here, the operator operates the operation and stop of the traction bogie 120 while moving together with the traction bogie 120.

Next, in order to support the cable 200 continuously transported by the towing truck 120, the support truck 130 is mounted (S30) on the cable 200 at regular intervals.

At this time, a plurality of support trucks 130 are mounted at predetermined intervals with respect to the cables 200 to be transported as shown in FIG. 5, and the cables 200 are fixed to the crates 150 of the support truck 130. Of course, the support carriage 130 is mounted on the rail 110 so as to be positioned behind the traction carriage 120, and is dragged along the cable 200 conveyed by the traction carriage 120 because there is no driving force.

Next, the snake operation is performed by the snake truck 140 on which the cable 200 transferred to the position to be installed by the towing truck 120 and the support truck 130 moves, and the installation is performed in the hanger 210 (S40) do.

Specifically, when the snake bogie 140 located at the rear of the support bogie 130 moves along the rail 110, the cable 200 mounted on the first and second support rollers 148 is moved to the first, The cable 200 is placed on the hanger 210 when the hanger 210 is pushed toward the hanger 210 side.

At this time, the cable 200 installed in the hanger 210 is naturally installed in the form of a snake. Further, when the cable 200 is multi-laid, the preceding process is repeatedly performed.

The snake truck 140 is also operated and stopped by an operator moving together.

Next, the cable 200 laid on the hanger 210 is firmly fixed (S50) by the cut 150.

By this process, the cable 200 is installed in the electric power tool 300.

Of course, when the installation of the cable 200 is completed, all of the bogies including the support bogie 130 are returned to their original positions by operating the traction bogie 120 and the snake bogie 140 at the forefront.

The technique proposed in the present specification relates to a mechanized installation method and an installation apparatus of an underground transmission cable in a power hole using a rail, in which a rail is installed at a cable installation height, and a plurality of cables for towing cables and a cable To a mechanized laying method and an installation equipment for constructing a cable at a desired position.

On the other hand, the snake operation is carried out while the mechanical load operation is completed and the snake truck is moved in the reverse direction of the laying.

In addition, since the snake bogie is off-set at a constant interval, the cable is pushed to the cable fixing position on the hanger when forced forward in the installation direction.

That is, the snake operation is automatically arranged by the roller of the snake bogie, which is properly adjusted by advancing the post-installation snake bogie in the reverse direction.

Further, the cable disposed on the hanger is deformed into a shape such as a vertical snake, a horizontal snake, or a differential by a snake bar and is fixed on the hanger.

FIG. 3 is a flow chart of the mechanized installation work.

FIG. 6 is a perspective view schematically showing a traction bogie and a support bogie installed to transport an underground cable in a mechanized installation device of an underground cable using a rail according to a preferred embodiment of the present invention.

7 shows a concrete example of the installation equipment according to the present invention.

6 and 7, the grounding cable mechanical installation apparatus 100 using the rail according to the present invention includes a rail 110, a towing truck 120, a support truck 130, and a snake truck 140 ).

First, the rail 110 is a member installed to move the traction bogie 120, the support bogie 130, and the snake bogie 140.

The rail 110 may be installed at a height where the cable 200 is installed in the power tool 300.

In other words, a separate fixing member or directly fixed to one end of each of the plurality of hanger 210 installed in a row is firmly fixed to the wall surface of the electric power tool 300 so that the cable 200 can be installed.

At this time, a first thread 110a or a first thread groove 110b is formed on the surface of the rail 110 to prevent a slip phenomenon that may occur while the traction bogie 120 moves along the rail 110 .

In addition, the first threaded grooves 110b are formed at regular intervals or continuously in a circular shape on the side.

However, it should be understood that the form in which the first thread 110a or the first thread groove 110b is applied is merely an example of the present invention, and other embodiments can be applied.

The first and second drive wheels 126 and 146 of the traction bogie 120 and the snake bogie 140 are also provided with first and second threaded grooves 126a and 126b to be engaged with the first threaded hole 110a or the first threaded groove 110b, 146a or the second and third thread grooves 126b, 146b or the second and third thread projections 126c, 146c may be formed.

Here, the second and third threaded projections 126c and 146c engaged with the first threaded groove 110b may be formed at regular intervals or may be continuously formed in a circular shape on the side surface.

The first thread 110a or the first thread groove 110b is formed on the lower surface of the rail 110 and the first and second threaded grooves 110b and 110b are formed on the lower surface of the rail 110, The second and third threaded grooves 126a and 146a or the second and third threaded grooves 126b and 146b or the second and third threaded protrusions 126c and 146c are disposed at the lower portion to be engaged with the first thread 110a or the first thread groove 110b And may be formed on the first and second driving wheels 126 and 146.

The first thread 110a or the first thread groove 11b may be formed on either or both of the upper and lower surfaces of the rail 110 and may be formed on the first and second driving wheels 126, Three threaded portions 126a and 146a or second and third threaded grooves 126b and 146b or second and third threaded projections 126c and 146c may be formed.

Next, the traction bogie 120 includes a switch 121, a first power source 123 built in the first case 122, a first motor 124, a first gear 125, 126, a cable-securing crotch 150, and a crotch securing lever 151.

However, the contents of the present invention are not limited thereto, and it is apparent that the traction bogie 120 can be implemented by more or less configurations.

The traction bogie 120 is installed to move along the rail 110 after fixing the cable 200 to the upper portion and the first power source 123, the first motor 124, (122) and is installed at the lower part.

In addition, one or more traction bogie 120 may be installed depending on the weight of the cable 200 and the distance of travel.

In addition, the first power source 123 is a rechargeable battery with guaranteed portability and mobility, and can relieve a power supply voltage drop due to a long length of a conventional electric wire when the electric power tool 300 is a portable device.

The first power source 123 is installed to apply or cut off power to the first motor 124 according to the operation of the switch 121. [

The first motor 124 is operated by receiving power from the first power source 123 and the generated power may be transmitted to the first gear 125.

Also, the first motor 124 may receive power from the first power source 123, which is a battery, and may be connected to an electric wire according to a work environment to receive power.

At this time, a speed reducer (not shown) may be installed so that the output of the first motor 124 can be accurately transmitted to the first gear 125.

The first gear 125 may be installed to rotate the first driving wheel 126 by receiving power from the first motor 124.

The first driving wheel 126 is provided with a plurality of pairs of wheels so as to contact the upper and lower surfaces of the rail 110. The first driving wheel 126 includes a first thread 110a formed on the lower surface of the rail 110, A second threaded portion 126a or a second threaded groove 126b or a second threaded projection 126c is formed on the first driving wheel 126 positioned at the lower portion so as to engage with the groove 110b. The first driving wheel 126 is installed to move the towing carriage 120 while receiving power from the first gear 125 and rotating along the rail 110.

The first driving wheel 126 may be installed only on the upper portion of the rail 110 so that the first driving wheel 126 may move only along the upper surface of the rail 110. In this case, Can be formed on the upper surface.

In addition, the first driving wheels 126 may be designed to receive the driving force in accordance with the weight of the cable 200, the distance to be driven, or the like, or may receive only a part of the driving force.

The crate 150 and the crate fixing lever 151 are members mounted to fix the cable 200 to the towing truck 120, the support truck 130 and the snake truck 140, When the cable 200 is wrapped around the body 200, the crotch fixing lever 151 may be operated to firmly fasten the crotch 150 to the body of the cable 200.

In addition, the crotch 150 is rotated by the upper crotch 150a about the axis 150c with respect to the lower crotch 150b, and the upper crotch 150a is opened by the shaft rotation of the upper crotch 150a, May be manufactured to be seated on the lower crotch 150b.

The crite fixing lever 151 may be installed so that the tip of the upper rotating crotch 150a can be fastened to one end of the lower crating 150b.

The crate fixing lever 151 is provided with a claw 151a extending from the tip or one end of the cage 150a in contact with the tip of the cage 150a and the claw 151a, And a lever 151b provided to be axially rotatable to firmly adhere the portion.

The crotch 150 and the crotch fixing lever 151 can be detachably mounted on the towing carriage 120 and the support carriage 130.

Meanwhile, the support carriage 130 can be installed to move along the rail 110 while supporting the cable 200 conveyed by the traction carriage 120.

That is, the supporting truck 130 has a structure in which the first power source 123, the first motor 124, and the first gear 125 are excluded as compared with the towing truck 120. The supporting truck 130 has no self- A plurality of cables can be installed behind the traction bogie 120 for transporting the cables 200. [

In addition, when the tow truck 120 is provided with a plurality of tow trucks 120, a plurality of tow trucks 120 are installed at predetermined intervals between the tow trucks 120. Here, the support truck 130 includes a plurality of rotating rollers 131, a pair of crawler rollers 131, a crawler 150 for fixing the cable 200, (151).

The rotary roller 131 may also be provided with a thread, a thread groove or a thread projection corresponding to the first thread 110a or the first thread groove 110b.

Meanwhile, the snake truck 140 may be installed to move along the rail 110 so that the snake operation is performed while the cable 200 is installed on the hanger 210.

The snake bogie 140 is installed behind the support bogie 130 in order to lay the cable 200 on the hanger 210 when the cable 200 is transported by the traction bogie 120 and the support bogie 130 .

The snake truck 140 includes a switch 141, a case 142, a second power source 143 built in the case 142, a second motor 144, a second gear 145, A plurality of pressure rollers 147 and a plurality of support rollers 148 for laying the second driving wheel 146, the cable fixing claw 150, the crate fixing lever 151 and the cable 200 on the hanger 210, ).

The second drive gear 143, the second motor 144 and the second gear 145 built in the second case 122 and the second drive wheel 146, the cable fixing claw 150, (151) may be the same as the configuration of the traction bogie (120).

The second driving wheel 146 disposed at the lower portion of the pair of second driving wheels 146 is connected to the second driving wheel 146 by a third screw thread 110a, A third threaded groove 146a or a third threaded groove 146b or a third threaded projection 146c may be formed.

The first thread 110a or the first thread groove 110b may be formed on the upper surface of the rail 110. The first thread 110a or the first thread groove 110b may be formed on the upper surface of the rail 110, .

The pressure roller 147 may be provided in a single number or may be provided in plural.

Here, the plurality of pressure rollers 147 can be sequentially installed at a distance from the upper surface of the snake carriage 140 on one side of the hanger 210 side.

Three pressure rollers 147 are provided and the first pressure roller 147a is disposed closest to one surface of the hanger 210. The second pressure roller 147b The third pressing roller 147c is installed farthest from the first pressing roller 147a and installed at a position farthest from the first pressing roller 147a in accordance with the position of the cable 200 in a state of being transported by the towing carriage 120 and the support carriage 130. [ .

However, the present invention is not limited thereto, and the present invention may be implemented by using a single pressure roller 147. FIG.

The cable 200 is pushed outward by the first, second, and third pressing rollers 147, and can be installed on the hanger 210 in conjunction with the snake operation.

The support roller 148 may be installed corresponding to the pressure roller 147 for supporting the cable 200 mounted on the snake carriage 140. [

Two support rollers 148 are provided and not provided on the third pressure roller 147c and the second pressing roller 147b is provided between the second pressure roller 147b and one surface of the hanger 210, And a first supporting roller 148a may be installed between the first pressing roller 147a and one surface of the hanger 210 side.

Here, the snake operation of the cable 200 is installed in a serpentine shape in which the cable 200 is swirled in the power hole 300. This effectively prevents the thermal contraction action of the cable 200 according to the ambient temperature Can be performed.

The rail 110 proposed by the present invention will be described in detail on the basis of the above-mentioned mechanized installation equipment and method of the underground cable.

As described above, the rail 110 is a member installed for moving the traction bogie 120, the support bogie 130 and the snake bogie 140. The rail 110 is a member for moving the cable 200 can be installed.

In other words, a separate fixing member or directly fixed to one end of each of the plurality of hanger 210 installed in a row is firmly fixed to the wall surface of the electric power tool 300 so that the cable 200 can be installed.

Specifically, the rail 110 proposed by the present invention may include a rail 111, a connection metal 112, and a rail support 113.

Hereinafter, the rails 111, the brackets 112, 112, and the rail supports 113 constituting the rail 110 will be described in detail.

First, the rail 111 will be described.

The rail (111) should be made of mechanical, electrical, and chemically safe high strength materials in durability to withstand the force applied during cable construction and should not be corroded even if installed and operated in the power line for a long time.

In addition, the length of the rail 111 is greatly influenced by the full height, width, degree of bending, and material inlet size of the electric power source or tunnel. If the length of the rail 111 is long, there are advantages such as reduction of the connecting portion and reduction of the friction of the supporting roller. However, the workability such as increase of the transportation weight, installation and demolition is decreased, , And the friction increases due to an increase in the number of connection portions.

The rail 111 needs to be linear and curved depending on the degree of bending of the power sphere. The curved rails (111) shall be designed and constructed to maintain a radius of curvature equal to or greater than the cable laying construction standard.

The rail 111 is a rectangular member provided on the hangers for moving traction bogies, support bogies, and snake bogies. The rail 111 is made of a high strength steel having durability sufficient for the running load during the cable installation and the maximum normal load, And is installed on the connecting metal fitting 112 provided at the substantially end of the line in which the cable is installed in the power hole. More specifically, each hanger is firmly mounted on the wall inside the power socket so that the cable can be laid. At this time, a hole is formed on the surface of the rail 111 to prevent a slip phenomenon that may occur while the traction bogie moves along the rail 111. At this time, the hole grooves are formed at regular intervals, and protrusions are formed so as to engage with the hole grooves also in the traction disc and the snake drum driving wheels.

Next, the connection brackets 112 and 112 will be described.

The connecting metal fitting 112 is a member for fixing the rail 111 to the hanger, and it needs a hanger, a hanger, an I hanger, or the like depending on the shape of the hanger.

Typically, a hanger, I hanger is used for 154 kV XLPE cable construction, and a hanger is used for 345 kV XLPE cable construction.

The connecting bracket (112) to be installed must be made of materials and structures that do not cause any mechanical deformation or damage to the existing hanger and newly installed hanger. In addition, there is a need to fabricate a bolt tightening structure, not a structure in which a hanger or a hanger is processed by disassembling and disassembling after the completion of the work.

A hole for fastening a bolt for fixing the rail is required to the connecting metal fitting 112. A fastening bolt requires a variable portion capable of correcting a certain height of the rail.

The rail support 113 will be described.

The rail support 113 is a support member for raising the lower end of the rail and is used only for the 345-kV XLPE cable construction. The installation location is installed between the hanger and the hanger.

The rail support 113 is a structure that can be easily installed on the rails and has a height adjustment function. In addition, it should not be corroded even if it is installed and operated in a power plant for a long time.

When designing the rail 11 and the connecting metal fitting 112, it is desirable to consider the following matters.

(1) Mechanical maximum load, maximum tensile force, resistance to side pressure, corrosion prevention and durability (2) No electric and electromagnetic influence (3) No adverse effect on environment and environment (4) It should be economical. (4) It should not be affected by explosion, fire, gas or the like due to safety. (5) It is required that there is no risk factor in installation.

When the contents of the present invention are applied, the loads applied to the rails are to be examined.

When a cable is installed, the weight of the cable, the weight of the power truck, and the weight of the cable support truck are caught on the rail.

The magnitude of the force acting on the rail is divided into the running load and the maximum constant load after the installation of the three strands of cable. The bending moment is larger because the position of the force acting on the hanger is farther from the fixed point than the normal load point, which is less than the maximum normal load, which is the sum of the weight of the cable above the rail, the weight of the power truck, .

The running load and the normal load deform the high-strength rail downward. The maximum closure occurs between the hanger supporting the rail and the hanger. It is necessary to limit the rail to be less than a certain value because it causes increase of the frictional force of the rail. The maximum amount of hanging of the hanger is 20mm. Since the part supporting the rail is a hanger, it is necessary to equalize the amount of raising of the hanger. In order to determine the proper support spacing that the maximum rail load is less than 20mm, the test rail (50mm × 50㎜ × 3.2t) is used to measure the amount of rail displacement while changing the weight and support spacing. Depending on the size of the cable, 154 kV XLPE 2,500 mm2 and 345 kV XLPE 2,500 mm2 vertical snake construction should be distinguished.

The rail support spacing is 1.5m, 2.25m, 3.0m, 4.5m, which is the installation interval of the hangers installed according to the current horizontal and vertical snake installation methods, so as to minimize the movement of the existing hanger or the installation of additional hanger You need to be able to.

Further, when applying the contents of the present invention, it is necessary to examine the load applied to the hanger supporting the rails.

In the case of mechanized installation using rails, all the weight is concentrated on the hanger installed in the electric power source.

154 kV XLPE 2,500 mm Horizontal snakes in case of hanger, I hanger end, 345 kV XLPE 2,500 mm in vertical snake In the case of vertical snake, rail is installed at the end of hangers,

In order to calculate the bearing capacity of the rail, it is necessary to divide it into maximum maximum load and maximum load as shown below. The bearing capacity of the hanger is proportional to the product of the weight applied to the hanger and the distance from the hanger anchor. In other words, bending moment and bending stress are calculated by dividing into a hangers, I hangers, and hangers depending on the length and structure of the hangers.

The maximum constant load is when the weight of cable, crate, rail, etc. installed on the hanger is the largest as shown in the figure. As shown in the figure, the maximum load is the case where the weight of cables, crews, rails, etc. installed on the hanger is less than the maximum load, but the distance from the fixed point of the hanger is farther and the value of bending moment and bending stress is larger. The values of the bending moment and the bending stress of the hanger due to the maximum normal load and the maximum running load calculated as follows shall not exceed the allowable stress range of the hanger.

In addition, when the contents of the present invention are applied, the force (tensile force) applied by the rail due to the running of the power truck is also required.

In the cable installation using the rail, the power truck pulls the fling eye of the cable wound on the cable drum and advances the wire on the rail. When the cable is pulled in, a cooperative bogie and a support bogie are installed at regular intervals. At this time, a force is applied to the rail in the reverse direction of the power truck which is installing the cable. The reaction of the rail to the extent of the tensile force required to lay the cable.

Cable installation tension increases as cable length and weight increase, and cable pull-in speed, tilt angle and friction coefficient increase. The following table shows the installed quantity of power balance (4hp) according to the installation speed. The maximum running tension is proportional to the number of power carts.

As a result, it is desirable to fix the rail support spacing at 1.5m intervals when horizontal snake is installed. It is preferable to fix the rail support at 4.5m intervals in case of vertical snake installation. desirable.

It is preferable that the minimum permissible radius of curvature of the power sphere (open type) is 3 m or more and the minimum allowable radius of curvature of the tunnel type power sphere is 3 m or more.

It should be noted, however, that the present invention is not limited thereto.

Hereinafter, specific specifications and manufacturing methods of the rail and the connecting fitting will be described using the drawings.

Fig. 8 shows an example of a structure and a photograph of a rail applied to the present invention.

9 is a table showing rail specifications and characteristics in relation to the present invention.

However, the numerical values shown in Figs. 8 and 9 are merely one example applicable to the present invention, and the contents of the present invention are not limited thereto.

Next, FIG. 10 shows a specific example of the a-shaped connecting bracket 112 with respect to the connecting bracket 112 applied to the present invention.

It is possible to insert and fix the nut on the fitting type bolt by inserting it on the a-shaped row shown in Fig.

In this case, it is possible to manufacture a bolt fitting type which can be easily installed without machining or deforming the hanger as a structure which can withstand the load applied to the connecting metal.

11 shows a specific example of the I-type connecting bracket 112 with respect to the connecting bracket 112 according to the present invention.

11, it is possible to insert and fix the I-shaped row on the insert type bolt by tightening the nut.

The difference from the a-type connecting bracket is that a movable type of crite is installed on the I-type row, so that the portion overlapping with the crite is cut off.

12 shows a concrete example of the elliptical bracket 112 relating to the bracket 112 to which the present invention is applied.

In Fig. 12, the insert bolt / nut was fastened and fixed by internally inserting the ㅁ 행 type row.

At this time, the unnecessary interior was removed to lighten the weight of the connection bracket.

13 shows a specific example of the rail support according to the present invention.

Referring to FIG. 13, there is shown an example of a rail auxiliary support installed at 345 kV XLPE 2,500 mm 2 at a position of 2.25 m between a hanger and a hanger.

At this time, bolts and nuts having threads for height adjustment are included, and a plate for dispersing the force applied to the bottom surface may be attached.

FIG. 14 is a table summarizing the sizes and specifications of the brackets 112 and the rail supports described with reference to FIGS. 10 to 13. FIG.

However, the numerical values shown in Fig. 14 are merely one example applicable to the present invention, and the contents of the present invention are not limited thereto.

Hereinafter, a method of installing the rail 111 and the connecting gold grommets 112 on the basis of the configuration of the present invention will be described.

Figs. 15A to 15F are views showing a concrete structure of assembling a rail bracket to a hanger in connection with the present invention.

Figs. 15A and 15B show how a rail bracket is connected to a hanger.

Next, Figs. 15C and 15D show how the rail bracket bolts are assembled to the a-type hanger.

Next, Figs. 15E and 15F show how the rail pedestal is mounted on the a-type hanger on the left and right sides.

16A and 16B illustrate concrete assemblies of a rail bracket in a hanger type hanger according to the present invention.

17A-17F illustrate specific aspects of assembling the rail and rail support in connection with the present invention.

Figs. 17A and 17B show the connection of the rails.

Next, Figs. 17C and 17D show assembling assembling the bolts of the connected rails.

Next, Figs. 17E and 17F show an example of assembling the rail support.

When the above-described configuration of the present invention is applied, it is possible to provide a user with a mechanized installation equipment and a construction method of an underground cable capable of installing cables of all sizes without fluctuation of the power sphere width. In the case of the conventional caterpillar laying method, since the caterpillar (width: 700 mm) is installed on the floor of the power hole passage (width: 800 mm), the work passage is narrow (about 100 mm) There was trouble. In the present invention, a cable is installed easily in a narrow electric power area by installing a rail.

In addition, when the configuration of the present invention is applied, a system capable of mechanized installation and snake operation can be provided at all positions where a cable is to be installed. In the conventional caterpillar laying method, first, a cable is laid on the bottom of the electric power source, and then the cable is lifted to a hanger having a height to be constructed. Then arrange the cable and fix the cable. In other words, it takes a lot of manpower and work time to lift the cable after cable installation and it is an inefficient working method. Therefore, in the present invention, there is no step of raising the cable because the rails are installed at the position where the cable is to be installed, and there is no need to raise the cable, and the snake operation is performed by using the snake power truck, .

Further, when the configuration of the present invention is applied, double laying can be made possible. It is possible to install the existing caterpillar by double laying method. However, when the caterpillar is installed for the double laying and the power line is installed more than 1,000m, the number of equipment and the power supply voltage drop frequently occur. In the development method applied to the present invention, a cable is installed on a rail with a cable trailing carriage while extending the length of an inexpensive rail, thereby solving the problem of voltage drop due to the length of a wire for operating a conventional caterpillar, Can be performed more easily. In addition, it is possible to avoid the place where the cable drum can not be installed due to frequent vertical section and traffic volume, so that it is possible to make a long distance double installation.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet) .

In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers of the technical field to which the present invention belongs.

It should be understood that the above-described apparatus and method are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

Claims (7)

A rail part installed along a position where a cable is to be installed in a power port; A towing truck installed on the rail to drive the cable while driving itself; A support carriage mounted at a predetermined distance on a cable pulled by the towing carriage and installed on the rail so as to follow the conveyed cable; And a snake bogie installed on the rail so that the snake operation is accompanied by pushing the cable and laying it on a plurality of hanger fixed to the wall in the power hole,
The rail portion
A rail fixed to the plurality of hanger for movement of the traction bogie, support bogie, and snake bogie;
A connecting bracket for fixing the rail to one end of the plurality of hangers; And
And a rail support installed at a lower end of the rail located between the plurality of hanger and supporting the rail to keep the rail horizontal,
In order to prevent a slip phenomenon occurring during the movement of the traction bogie and the snake bogie, a groove corresponding to a projection formed on at least a part of the traction bogie and the snake bogie is formed on the rail,
The rail The shape of the fixing bracket to be fixed is determined according to the shape of each of the plurality of hangers to be connected,
The rail support comprises:
A plurality of hangers provided between the plurality of hanger,
Further comprising: a height adjustment unit for changing the height of the rail supported by the rail support. The method according to claim 1,
Wherein the shape of the plurality of hanger includes a hanger shape, a hanger shape and an I hanger shape,
Wherein the shape of the connecting metal bracket includes a type connecting metal bracket, a metal connecting bracket and an I-type connecting metal bracket corresponding to the shape of each of the plurality of hanger,
Characterized in that the hanger shape and the hanger shape are used for 154 kV XLPE cable construction and the I hanger shape is used for 345 kV XLPE cable construction. The method according to claim 1,
The connection metal fitting,
Further comprising: at least one hole for fixing the rail to one end of the plurality of hanger using a fastening bolt;
Wherein a height of the rail connected to the connection metal fitting can be changed by a certain amount corresponding to the position of the tightening bolt fixed using the hole. delete The method according to claim 1,
The traction bogie includes a first power source for driving itself; A first motor; A first gear; And a first drive wheel,
The first driving wheel is composed of a pair of upper and lower parts so as to be in contact with the upper and lower surfaces of the rail,
A first screw thread or a first screw thread groove is formed on the rail in order to prevent a slip phenomenon between the rail and the first drive wheel, and a second screw thread, a second thread groove or a second thread projection is formed on the first drive wheel Wherein the mechanized cable installation apparatus is characterized in that the mechanical cable installation apparatus comprises: The method according to claim 1,
The snake truck includes a second power source for self-driving; A second motor; A second gear; And a second drive wheel,
The second driving wheel is composed of a pair of upper and lower parts so as to be in contact with upper and lower surfaces of the rail,
A first thread or a first thread groove is formed on the rail to prevent a slip phenomenon between the rail and the second driving wheel, and a third thread, a third thread groove, or a third thread projection is formed on the second driving wheel Wherein the mechanized cable installation apparatus is characterized in that the mechanical cable installation apparatus comprises: The method according to claim 1,
Wherein the rail uses a straight rail or a curved rail corresponding to the degree of bending of the power tool,
The curved rail is designed to maintain a radius of curvature of at least a predetermined value,
Wherein the radius of curvature is a value indicating the degree of curvature at each point of the curved surface or the curve.

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