KR20210048909A - Pneumatic cable feeding apparatus and method - Google Patents

Abstract

The present invention comprises: a body unit having a spraying unit that is opened toward the outside; a pump installed in the body unit; and a flexible fluid pipe having a closed end disposed on the inside of the body unit and the other open end passing through the spraying unit to be disposed on the outside of the body unit. The other end is connected to the spraying unit in a state in which an inner peripheral surface and an outer peripheral surface are inverted. The spraying unit and the outer peripheral surface form an expansion passage through which a fluid sucked into the body unit by the pump is inputted. The outer circumferential surface is pressurized by the fluid inputted into the expansion passage and the flexible fluid pipe is expanded in a direction away from the spraying unit to the outside.

Description

Pneumatic cable laying device and laying method{PNEUMATIC CABLE FEEDING APPARATUS AND METHOD}

The present invention relates to a pneumatic cable laying apparatus and laying method, specifically, to a pneumatic cable laying apparatus and laying method having a flexible fluid pipe that is expanded by a pump.

The underground pipeline is a lead-in pipeline for laying cables in the ground. The underground pipeline is a facility to safely protect underground cables, and is composed of a manhole that covers the opening connecting the ground and the basement, and a pipeline that protects the cable.

Concrete pipes, steel pipes, and conduits are used as pipes. The process of laying cables in the pipeline is as follows.

First, the line is inserted into the pipeline and passes through the pipeline. After that, the cable and the line protruding to the other side are connected, and the line is pulled in the direction opposite to the direction in which it was introduced. Through this, cables are laid in the pipeline.

The line trunk line is made of a material having an appropriate bendability to avoid obstacles or to pass a curved path and an appropriate straightness to proceed smoothly on a straight path. As the material, steel or plastic wire twisted according to the shape and size of the pipe is used.

Prior Art Document 1 (Publication Patent Publication No. 10-2010-0039632) discloses a cable laying equipment using the above-described line.

However, the following problems may occur when attempting to install a cable using the above-described line.

First, when the pipeline is deteriorated, aging changes such as stacking of foreign substances and erosion of the pipeline occur in the pipeline. In this case, obstacles such as foreign objects or grooves may get caught in the line. In other words, the entry of ships may be restricted.

In addition, the conduit through which the cables are laid is usually formed at a long distance. In particular, the line can be inserted into a long-distance pipe line of 300m or more. In this case, the contact surface between the ship and the pipeline increases as the ship is drawn in. That is, the frictional force between the line and the pipe may gradually increase, and thus the lead-in of the line may be restricted.

In addition, there may be other cables already in the conduit, the diameter of the conduit may be too small, or the conduit may be complicatedly bent. Although the conventional line has a straight line and a degree of bendability, when the space in which the line is inserted is too small or there are too many bent portions, the introduction of the line line may be restricted.

Accordingly, there is a need for a cable laying apparatus having a line-wire capable of smoothly laying cables even under the above-described limited conditions.

Prior Art Document 1: Unexamined Patent Publication No. 10-2010-0039632 (2010. 04. 16.)

An object of the present invention is to provide a pneumatic cable laying apparatus and laying method having a structure capable of solving the above-described problems.

First, it is an object of the present invention to provide a pneumatic cable laying apparatus and a laying method having a structure that can be smoothly inserted in an aging pipeline, a pipeline with a small entry space, and a complexly curved pipeline.

In addition, it is an object of the present invention to provide a pneumatic cable laying apparatus and a laying method having a wire line having a tensile strength of a degree capable of smoothly pulling a cable in a state of being inserted into a pipeline.

In addition, it is an object of the present invention to provide a pneumatic cable laying apparatus and a laying method having a structure that can be easily separated from a body part in a state inserted into a pipeline.

In addition, it is an object of the present invention to provide a pneumatic cable laying apparatus and a laying method having a structure in which a line trunk line can be accommodated in a body part before being introduced into a pipeline.

In order to achieve the above object, the present invention, a body portion having an injection portion that is opened toward the outside; A pump installed in the body portion; And a flexible fluid pipe having a closed end disposed inside the body part, the other open end passing through the injection part and disposed outside the body part, and the other end having the inner and outer circumferential surfaces upside down. It is connected to the injection unit, the injection unit and the outer circumferential surface form an expansion passage through which the fluid sucked into the body portion by the pump is introduced, and the outer circumferential surface is pressurized by the fluid introduced into the expansion passage, and the flexible It provides a pneumatic cable laying device in which the fluid pipe expands in a direction away from the injection part.

In addition, a flexible rope extending from the one end toward the other end may be attached to the outer circumferential surface of the flexible fluid pipe.

In addition, a fluid pipe clip portion having a fluid pipe fixing groove is rotatably installed on the lower surface of the body portion, and the flexible fluid pipe has one end detachably fixed to the fluid pipe fixing groove, and the fluid pipe clip It can be wound along the circumferential direction on the part.

Furthermore, the pump may include a suction part penetrating the body part and protruding outward; And a discharge part for discharging the fluid introduced through the suction part into the body part.

Further, it may further include a connection cap disposed between the other end and the injection unit, each coupled to the other end and the injection unit.

In addition, the injection unit includes a protruding coupling portion protruding toward the connection cap, and a coupling protrusion is formed on an outer circumferential surface of the protruding coupling portion, and the connection cap radially outwardly from an inner circumferential surface to accommodate the protruding coupling portion on one side. A concave coupling portion recessed by a predetermined depth may be provided, and a coupling groove engaged with the coupling protrusion may be formed on an inner circumferential surface of the concave coupling portion, and a fluid pipe receiving groove may be formed on the other side opposite to the one side.

In addition, in order to achieve the above object, the present invention, the steps of arranging a pneumatic cable laying device on one side of the pipe; Expanding the flexible fluid pipe toward the other side opposite to one side of the pipe by operating a pump in the body of the pneumatic cable laying device; Removing the fluid inside the expanded flexible fluid pipe by operating the pump in reverse; Connecting the flexible fluid pipe and the cable at the other side of the pipe; It provides a pneumatic cable laying method comprising the step of pulling the cable toward one side of the conduit.

In addition, separating the flexible fluid pipe from the body portion; And connecting the flexible fluid pipe and the line through one side of the pipe.

In addition, in order to achieve the above object, the present invention, the body portion having an injection portion that is opened toward the outside; A pump installed in the body portion; A fluid pipe clip part rotatably installed on the bottom of the body part; And a flexible fluid tube having a closed end detachably coupled to the fluid tube clip part and wound along a circumferential direction to the fluid tube clip part, and the open other end of the flexible fluid tube includes the injection part. It is disposed in the body portion through and connected to the injection unit in a state in which the inner and outer circumferential surfaces are turned upside down, and the injection unit and the outer circumferential surface form an expansion passage through which the fluid sucked into the body unit by the pump flows, The outer circumferential surface is pressurized by the fluid introduced into the expansion flow path, and the flexible fluid pipe is expanded in a direction away from the injection unit to provide a pneumatic cable laying device.

In addition, the pump may include a first intake/exhaust port penetrating the body portion and protruding outwardly and a second intake/exhaust port communicating with the first intake/exhaust port.

In addition, a flexible rope extending from the one end toward the other end may be attached to the outer circumferential surface of the flexible fluid pipe.

The following effects can be derived through the above-described solution.

The flexible fluid pipe of the present invention expands into an empty space in a pipeline. Even when the pipe diameter is too narrow, the cable is already laid, or the pipe is bent complicatedly, the flexible fluid pipe may expand into an empty space.

That is, the flexible fluid pipe can smoothly pass through pipelines of various states and shapes, and thus, pipeline cables of various states and shapes can be smoothly installed.

In addition, since the flexible fluid pipe expands in such a way that a portion located inside the bent portion moves toward the outside, friction with the pipe is insignificant. Through this, the flexible fluid pipe can be easily expanded in a long-distance pipe.

That is, cables can be smoothly laid in long-distance pipelines.

In addition, a flexible rope is attached to the outer peripheral surface of the flexible fluid pipe. The flexible rope is bent together with the flexible fluid tube and has a tensile strength capable of withstanding a predetermined tensile force.

That is, a flexible rope having a predetermined tensile strength may be combined with a flexible fluid pipe to provide a tensile strength required for pulling the cable.

In addition, the towing line to which the flexible fluid pipe and the flexible rope are coupled can be easily separated from the body portion while being inserted into the pipe. Rather than pulling the tow line directly, it can be connected to another line and pulled with a motor. Through this, it is possible to pull the cable more efficiently.

In addition, the flexible fluid pipe is wound and accommodated in the fluid pipe clip portion within the body portion. Through this, the flexible fluid pipes can be expanded without being entangled with each other.

1 is a conceptual diagram illustrating a conventional cable laying process.
Figure 2a is a perspective view showing a pneumatic cable laying device according to the present invention.
2B is a perspective view showing a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded.
2C is a perspective view showing an expanded state of the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A.
3A is a partial cross-sectional view illustrating a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded.
3B is a partial cross-sectional view illustrating a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded.
3C is a partial cross-sectional view illustrating a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded.
Figure 4a is a cross-sectional view showing a state in which the flexible fluid pipe of the pneumatic cable laying apparatus according to the present invention is expanded in the pipeline.
FIG. 4B is a cross-sectional view showing a state in which the fluid inside the expanded flexible fluid pipe of FIG. 4A is discharged through a pump.
5 is a conceptual diagram showing a process of traction by connecting a flexible fluid pipe according to the present invention to a cable.
6 is a flow chart showing the flow of the pneumatic cable laying method according to the present invention.
7 is a flow chart showing a specific flow of a modified example of the pneumatic cable laying method according to the present invention.

Hereinafter, a pneumatic cable laying apparatus and laying method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, descriptions of some constituent elements may be omitted in order to clarify features of the present invention.

1. Explanation of terms

The'circumferential direction' used below refers to the rotation center axis of the fluid pipe clip part rotatably coupled to the bottom of the body part 110, and the virtual line perpendicular to the center axis rotates clockwise or counterclockwise. Means direction.

In addition, it means a direction in which a virtual line crossing a direction in which the fluid flows to the injection unit 112 and the connection cap 151 rotates clockwise or counterclockwise.

2. Description of the conventional cable laying device

Referring to Fig. 1, a conventional cable laying device will be described. 1 is a conceptual diagram illustrating a conventional cable laying process.

The conventional cable laying device 10 includes a wire line 11 and a wire line winding part 13. In the underground, a conduit 20 through which a cable is laid is formed, and a cable 31 is laid in the conduit 20 through the cable laying device 10.

First, the line line 11 in a state wound on the line line winding part 13 is unwound and inserted into the pipe 20. The line 11 is inserted from one side of the conduit 20 toward the other side opposite to the one side.

The line winding part 13 may be connected to an electric motor (not shown) to receive power. The wire winding part 13 is rotated by a motor, and the wire wire 11 is unwound therefrom. The above-described process may be performed by a worker's manual work.

As the line 11 is released, it is inserted toward the other side of the conduit 20. When the line 11 is released longer than the length of the conduit 20, the end of the line 11 protrudes to the other side of the conduit 20.

The cable part 30 includes a cable 31 and a cable winding part 32. The cable 31 is unwound from the cable winding portion 32 on which the cable 31 is wound. The operator connects the end of the cable 31 and the end of the protruding line 11.

The line winding portion 13 is rotated by a motor or an operator, and the unwound line 11 is wound around the line winding portion 13 again. Through this, the cable connected to the end of the line 11 is pulled from the other side of the conduit 20 to one side.

The cable 31 is laid in the conduit 20 through the above-described process.

However, when the conduit 20 is aging, a locking portion 21 may be formed inside the conduit 20. As illustrated, the locking part 21 may have a shape protruding by stacking foreign substances, and may have a shape of a groove in which the pipe 20 is damaged and dug.

That is, in the conduit 20, the locking portion 21 is generated due to aging. In this case, the line communication line may be caught in the locking part 21. In other words, the entry of ships may be restricted.

In addition, as the line 11 is inserted into the long-distance conduit 20, the contact surface between the line 11 and the conduit 20 is increased. That is, the frictional force between the line 11 and the conduit 20 is gradually increased, so that the lead-in of the line 11 may be limited.

Although not shown, there may be other cables already in the conduit 20, the diameter of the conduit 20 is too small, or the conduit 20 may be complicatedly bent. Although the conventional line 11 has a straight line and flexibility to some extent, when the space in which the line 11 is inserted is too small or there are too many bent portions, the introduction of the line 11 may be restricted.

Accordingly, there is a need for a cable laying device having a structure capable of solving the above-described problems.

3. Description of the pneumatic cable laying device according to the present invention

Hereinafter, a pneumatic cable laying apparatus 100 according to the present invention will be described with reference to FIGS. 2A, 2B and 2C. Figure 2a is a perspective view showing a pneumatic cable laying device according to the present invention. 2B is a perspective view showing a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded. 2C is a perspective view showing an expanded state of the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A.

(1) Description of the configuration of the pneumatic cable laying device

The pneumatic cable laying device 100 according to the present invention includes a body portion 110, a pump 130, and a cylinder portion 150.

First, the body portion 110 will be described.

The body portion 110 provides a space in which the pump 130 and the cylinder portion 150 can be installed. A pump 130 is installed on one side of the body portion 110.

A fluid pipe clip portion 114 is rotatably installed on the bottom of the body portion 110. A fluid pipe fixing groove 114a penetrating the center of the fluid pipe clip portion 114 is formed in the fluid pipe clip portion 114. The fluid pipe clip portion 114 may be formed in a cylindrical shape. However, the present invention is not limited thereto, and may have other known shapes.

The open end (1551d) of the flexible fluid pipe (1551) is detachably fixed to the fluid pipe fixing groove (114a).

In addition, the body portion 110 is provided with an injection portion 112 that is open toward the outside. The injection part 112 injects the fluid inside the body part 110 to the outside of the body part 110. However, it is covered by the open end (1551c) of the flexible fluid pipe (1551). Accordingly, the fluid sprayed by the injection part 112 to the outside of the body part 110 is sprayed to the inner circumferential surface of the flexible fluid pipe 1551. This will be described later in detail.

The injection part 112 extends outward from the outer circumferential surface of the body part 110, and one side of the injection part 112 is opened toward the outside of the body part 110.

Next, the pump 130 will be described.

The pump 130 is installed inside the body portion 110 and sucks the fluid outside the body portion 110 into the inside. Alternatively, the pump 130 discharges the fluid inside the body portion 110 to the outside.

The pump 130 includes a suction unit 134 in communication with the outside and a discharge unit 132 in communication with the inside of the body unit 110.

The suction part 134 passes through the body part 110 and protrudes to the outside of the body part 110.

The suction part 134 and the discharge part 132 communicate with each other.

The pump 130 may be a means capable of transporting a fluid by a pressure action. For example, the pump 130 may be an air pump.

The pump 130 is operated to suck the fluid outside the body part 110 through the suction part 134 and discharge it into the body part 110 through the discharge part 132. In addition, the pump 130 may be reversely operated to suck the fluid inside the body part 110 through the discharge part 132 and discharge the fluid inside the body part 110 through the suction part 134 to the outside of the body part 110.

That is, both the discharge unit 132 and the suction unit 134 may suck or discharge fluid. The suction unit 134 and the first intake and exhaust ports 134 mean the same configuration, and the discharge unit 132 and the second intake and exhaust ports 132 refer to the same configuration.

Next, the line tube 150 will be described.

The line tube 150 includes a connection cap 151, a flexible rope 153, and a flexible fluid pipe 155.

The closed end (155d) of the flexible fluid pipe is detachably fixed to the fluid pipe fixing groove (114a). The flexible fluid pipe 155 is wound around the fluid pipe clip portion 114 along the circumferential direction. That is, the flexible fluid pipe 155 is disposed in the form of a roll around the fluid pipe clip portion 114.

The open end 155c of the flexible fluid tube passes through the injection part 112 and extends outward of the body part 110. That is, the open end (155c) is disposed outside the body portion (110).

The open end 155c is connected to the injection part 112 with the inner circumferential surface 155a and the outer circumferential surface 155b turned upside down.

That is, some of the outer circumferential surfaces 155b of the flexible fluid pipe 155 adjacent to the injection unit 112 face each other.

A connection cap 151 is disposed between the injection part 112 and the open end 155c. The connection cap 151 is coupled to the open end of the injection unit 112 and the open end 155c of the flexible fluid pipe, respectively.

That is, the flexible fluid pipe 155 seals the injection part 112. The outer circumferential surface 155b of the flexible fluid pipe 155 may be exposed to the fluid inside the body part 110, and the inner circumferential surface 155a may be exposed to the fluid outside the body part 110.

The flexible fluid pipe 155 may be formed of a material that can be easily bent by the pressure of the fluid. For example, the flexible fluid pipe 155 may be formed of vinyl fibers.

A flexible rope 153 extending from the open end 155c toward the closed end 155d is attached to the outer circumferential surface 155b of the flexible fluid pipe 155.

The flexible rope 153 is bent together with the flexible fluid pipe 155, but the flexible rope 153 has a tensile strength capable of withstanding a predetermined tensile force. The flexible rope 153 may be formed by twisting a plurality of fibers.

(2) Description of the operation of the pneumatic cable laying device

Hereinafter, the operation of the pneumatic cable laying device 100 will be described.

Figure 2a shows a first state before the drive of the pneumatic cable laying device 100, Figure 2b shows a second state in which the pneumatic cable laying device 100 is being driven, and Figure 2c is a pneumatic cable laying device 100 All of the flexible fluid pipes 155 of are shown in a third state in which they are inflated.

When the pump 130 is driven in the first state, the pump 130 sucks an external fluid into the body 110. Through this, the pressure inside the body portion 110 increases. In this case, the fluid inside the body portion 110 flows toward a place where the pressure is low. That is, the fluid inside the body part flows toward the outside of the body part 110 through the injection part 112.

However, since the open end of the injection part 112 is surrounded by the open end 155c of the flexible fluid pipe, the fluid inside the body part 110 presses the outer circumferential surface 155b of the flexible fluid pipe 155 It is moved toward the outside of the body portion (110).

That is, the outer circumferential surface 155b of the flexible fluid pipe 155 is moved toward the outside of the body portion 110 and is turned over.

Through this, the flexible fluid pipe 155 is expanded in a direction away from the injection part 112 to the outside of the body part 110. A second state in which the flexible fluid pipe 155 is expanding is shown in FIG. 2B.

As the flexible fluid pipe 155 expands from the open end 155c, the closed end 155d side of the flexible fluid pipe 155 wound around the fluid pipe clip part 114 is together with the fluid pipe clip part 114. It is rotated. Through this, the flexible fluid pipe 155 that has been wound is released from the fluid pipe clip portion 114.

When the flexible fluid pipe 155 expands to the outside of the body portion 110 by a predetermined distance or more, the closed end 155d is separated from the fluid pipe fixing groove 114a. The separated closed end (155d) is moved to the outside of the body portion (110) through the injection portion (112).

When all of the flexible fluid pipes 155 are expanded, the closed end 155d is spaced farthest to the outside of the body portion 110.

A third state in which all of the flexible fluid pipes 155 are expanded is shown in FIG. 2C.

(3) Detailed explanation of the connection relationship between the body part and the flexible fluid pipe

Hereinafter, a connection relationship between the body portion and the flexible fluid pipe will be described in detail with reference to FIG. 3A. 3A is a partial cross-sectional view illustrating a process in which the flexible fluid pipe of the pneumatic cable laying device of FIG. 2A is expanded.

The connection cap 151 is disposed between the open end 155c and the injection unit, and is coupled to the open end 155c and the injection unit 112, respectively.

The connection cap 151 may be formed in a hollow shape.

The injection part 112 has an end open to the outside of the body part 110.

The open end of the injection part 112 may have a protruding coupling part 1121 protruding toward the connection cap 151. The protruding coupling portion 1121 is formed to be thinner than an adjacent portion. That is, the outer circumferential surface of the injection part 112 is formed to be stepped.

A coupling protrusion 1121a is formed on the outer circumferential surface of the protruding coupling part 1121. The coupling protrusion 1121a is formed along the circumferential direction from the outer circumferential surface of the protruding coupling portion 1121.

The connection cap 151 includes a concave coupling portion 1511 recessed radially outward from an inner circumferential surface by a predetermined depth to accommodate the protruding coupling portion 1121 on one side.

A coupling groove 1511a engaged with the coupling protrusion 1121a is formed on the inner circumferential surface of the concave coupling portion 1511.

The protruding coupling portion 1121 is inserted into the concave coupling portion 1511, and the coupling protrusion 1121a is inserted into the coupling groove 1511a. Through this, the injection unit 112 and the connection cap 151 are coupled.

A fluid pipe receiving groove 1513 is formed on the other side opposite to one side of the connection cap 151. The fluid pipe receiving groove 1513 is formed by being depressed by a predetermined length toward the body portion 110 from the other side. The fluid pipe receiving groove 1513 is formed along the circumferential direction from the other side, and accommodates the open end 155c of the flexible fluid pipe 155.

The coupling of the outer circumferential surface of the protruding coupling portion 1121 and the inner circumferential surface of the concave coupling portion 1511 is not limited to the above-described substrate, and may be coupled by other known coupling methods.

For example, the outer circumferential surface of the protruding coupling portion 1121 and the inner circumferential surface of the concave coupling portion 1511 may be screwed, and the protruding coupling portion 1121 may be pressed into the concave coupling portion to be coupled to each other.

By the above-described coupling structure, the cylinder portion 150 and the injection portion 112 are detachably coupled to each other.

(4) Detailed explanation of the expansion process of the flexible fluid pipe

Hereinafter, the expansion process of the flexible fluid pipe will be described in detail with reference to FIGS. 3A, 3B, and 3C. 3A, 3B, and 3C are partial cross-sectional views illustrating a process in which the flexible fluid pipe 155 of the pneumatic cable laying device of FIG. 2A is expanded.

3A shows a first state before the flexible fluid pipe 155 is expanded, FIG. 3B shows a second state in which the flexible fluid pipe 155 is expanding, and FIG. 3C shows the flexible fluid pipe 155 is almost It shows a third state in which it is fully expanded.

The injection part 112 and the outer circumferential surface 155b of the flexible fluid pipe 155 form an expansion passage F through which the fluid sucked into the body part 110 by the pump 130 is introduced.

When the pump 130 is driven in the first state, the pump 130 sucks an external fluid into the body 110. Through this, the pressure inside the body portion 110 increases. In this case, the fluid inside the body portion 110 flows toward a place where the pressure is low. That is, the fluid inside the body part flows toward the outside of the body part 110 through the injection part 112.

In this case, an expansion passage F is formed between the injection part 112 and the outer circumferential surface 155b around the open end 155c adjacent to the injection part 112. The fluid inside the body part 110 flows into the expansion flow path F, and the introduced fluid presses the bent part V1 in which the inner circumferential surface 155a and the outer circumferential surface 155b are overturned to the outside of the body part 110.

Through this, the folded portion V1 is unfolded, and the flexible fluid pipe 155 inside the bent portion V1 is moved to the outside of the bent portion V1.

That is, as the flexible fluid pipe 155 inside the body portion 110 moves to the outside of the body portion 110, the flexible fluid pipe 155 expands.

Looking at the second state, in the first state, the flexible fluid pipe 155 of the first point P1, which was located inside the body part 110, moves to the second point P2 outside the body part 110. do.

In addition, while the bent portion V1 that was folded in the first state is unfolded, the flexible fluid pipe 155 located inside the bent portion V1 is moved to the outside of the bent portion V1, and the bent portion V1 The flexible fluid pipe 155, which was located on the inside of, is turned over to form a new bent portion V2.

Through the above-described process, the expansion passage F gradually extends in a direction away from the body portion 110, and the flexible fluid pipe 155 expands in a direction away from the body portion 110.

The flexible rope 153 attached to the outer circumferential surface of the flexible fluid pipe 155 is also moved along the flexible fluid pipe 155.

3C shows a third state in which the flexible fluid pipe 155 is almost completely expanded through the above-described process.

(5) Detailed explanation of the cable laying process

Hereinafter, a process of laying a cable using the pneumatic cable laying device 100 according to the present invention will be described with reference to FIGS. 4A, 4B and 5.

Figure 4a is a cross-sectional view showing a state in which the flexible fluid pipe of the pneumatic cable laying apparatus according to the present invention is expanded in the pipeline. FIG. 4B is a cross-sectional view showing a state in which the fluid inside the expanded flexible fluid pipe of FIG. 4A is discharged through a pump. 5 is a conceptual diagram showing a process of traction by connecting a flexible fluid pipe according to the present invention to a cable.

In order to insert the flexible fluid pipe 155 into the pipe 20, the body portion 110 is disposed on one side of the pipe 20. The injection part 112 faces on one side of the conduit 20 and the other side opposite to the one side.

The pump 130 is operated so that external fluid is sucked into the body portion 110 through the first intake and exhaust port 134, and the sucked fluid passes through the flexible fluid pipe 155 to one side of the pipeline 20 Inflate to the other side.

When the flexible fluid pipe 155 is in contact with the locking part 21 in the process of expanding, the sucked fluid enters an empty space without the locking part 21 and the outer circumferential surface 155b of the flexible fluid pipe 155 Pressurize. That is, the flexible fluid pipe 155 is expanded into an empty space by avoiding the locking part 21.

Even when the pipe diameter of the pipe 20 is too narrow, the cable of the pipe 20 has already been laid, or the pipe 20 is bent complicatedly, the flexible fluid pipe 155 may expand into an empty space. have.

That is, unless the conduit 20 is closed, the hull portion 150 according to the present invention can be expanded to find an empty space. In other words, the cylinder part 150 according to the present invention can be smoothly expanded in the conduit 20 of various states and shapes.

In addition, since the flexible fluid pipe 155 expands in such a way that portions located inside the bent portions V1 and V2 of the flexible fluid pipe 155 move toward the outside, friction with the pipe 20 is insignificant. Therefore, the flexible fluid pipe 155 can be easily expanded even in the long-distance conduit 20. That is, the cable 31 can be smoothly installed in the long-distance conduit 20.

When all of the flexible fluid pipes 155 are expanded and protrude to the other side of the pipe 20, the pump 130 is operated in reverse. The reversely operated pump 130 discharges the fluid inside the flexible fluid pipe 155 to the outside of the body portion 110 through the first intake and exhaust port 134.

In this case, a flexible fluid pipe 155 is attached to the outer circumferential surface of the flexible rope 153 passing through the pipe 20 to form a single pull line 250.

The tow line 250 is separated from the body portion 110.

The towing line 250 may be composed of a flexible rope 153, a flexible fluid pipe 155 attached to the outer circumferential surface of the flexible rope 153, and a connection cap 151. In addition, when cutting the flexible fluid pipe 155 attached to the outer circumferential surface of the flexible rope 153 and the flexible rope 153 in the connection cap 151, the traction line 250 is a flexible rope 153 and a flexible rope ( It may be composed of only the flexible fluid pipe 155 attached to the outer circumferential surface of 153.

The end of the towing line 250 protruding to the other side of the conduit 20 is connected to the cable 31, and the towing line 250 is pulled toward one side of the conduit 20, thereby passing the cable 31 to the conduit 20 ) From the other side to one side.

Alternatively, the end of the towing line 250 located on one side of the pipeline 20 is connected to the line line 11, and an operator or a motor rotates the line line winding part 13 to pull the line line 11 do. Through this, the cable 31 is moved from the other side of the conduit 20 to one side.

4. Description of the pneumatic cable laying method according to the present invention

Hereinafter, a method for laying a pneumatic cable according to the present invention will be described with reference to FIGS. 6 and 7. 6 is a flow chart showing the flow of the pneumatic cable laying method according to the present invention. 7 is a flow chart showing the flow of a modified example of the pneumatic cable laying method according to the present invention.

First, a pneumatic cable laying device 100 is disposed on one side of the pipe 20 (S100).

A pneumatic cable laying device 100 is disposed on one side of the pipeline 20. The injection part 112 of the body part 110 is disposed to face the other side opposite to one side of the pipe 20.

In addition, the pump 130 in the body portion 110 is operated to expand the flexible fluid pipe 155 toward the other side opposite to one side of the pipe 20 (S200).

The pump 130 sucks the fluid outside the body part 110 into the body part 110, and the sucked fluid flows into the expansion passage F to expand the flexible fluid pipe 155. The flexible fluid pipe 155 is expanded to find an empty space toward the other side of the pipe 20.

The flexible rope 153 attached to the outer circumferential surface 155a of the flexible fluid pipe 155 is also moved toward the other side of the pipe 20.

Then, the pump 130 in the body portion 110 is operated in reverse to remove the fluid in the expanded flexible fluid pipe 155 (S300).

The pump 130 discharges the fluid inside the body part 110 to the outside of the body part 110. The fluid inside the flexible fluid pipe 155 is discharged to the outside of the body portion 110 through the first intake and exhaust ports 134.

In this case, a flexible fluid pipe 155 is attached to the outer circumferential surface of the flexible rope 153 passing through the pipe 20 to form a single pull line 250.

Then, the flexible fluid pipe 155 and the cable 31 are connected from the other side of the pipe 20 (S400).

In order to pull the cable 31, the closed end 155d of the flexible fluid pipe 155 protruding to the other side of the pipe 20 and the cable 31 are connected.

Then, the cable 31 is towed toward one side of the conduit 20 (S500).

The cable 31 may be pulled by pulling the towing line 250 to one side of the conduit 20.

In addition, it is possible to connect the other line 11 to the towing line 250 and pull the line 11 to pull the cable 31.

In this case, the towing line 250 is separated from the body portion 110. That is, the flexible fluid pipe 155 is separated from the body portion 110 (S420). Then, the flexible fluid pipe 155 and the line 11 are connected at one side of the pipe 20 (S440).

Then, the cable 31 is towed toward one side of the conduit 20 (S500). An operator or a motor rotates the line winding part 13 to pull the line line 11. Through this, the cable 31 is moved from the other side of the conduit 20 to one side.

The flexible fluid pipe 155 is not directly pulled, but is connected to another line 11 and pulled by a motor, so that the cable 31 can be pulled more efficiently.

The pneumatic cable laying method according to the present invention is a method of pulling the cable 31 through the pneumatic cable laying device 100 described above, and a briefly described or omitted part is a description of the pneumatic cable laying device 100 described above. Can be understood with reference to.

Although the above has been described with reference to a preferred embodiment of the present invention, those of ordinary skill in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention described in the following claims. You will understand that you can.

10: cable laying device
11: Line Tong Line
13: Line winding
20: pipeline
21: locking part
30: cable part
31: cable
32: cable winding
100: pneumatic cable laying device
110: body
112: injection part
1121: protruding coupling portion
1121a: coupling protrusion
114: fluid pipe clip portion
114a: fluid pipe fixing groove
130: pump
132: outlet, second intake and exhaust port
134: inlet, first intake and exhaust port
150: line communication part
151 Connection cap
1511: concave joint
1511a: coupling groove
1513: fluid pipe receiving groove
153: flexible rope
155: flexible fluid pipe
155a: inner circumference
155b: outer peripheral surface
155c: open end
155d: closed end
F: expansion channel
P1: first position
P2: second position
V1: bend
V2: bend

Claims (11)

A body portion having an injection portion that is opened toward the outside;
A pump installed in the body portion; And
One closed end is disposed inside the body part, the other open end penetrates the injection part and includes a flexible fluid tube disposed outside the body part,
The other end is connected to the injection unit with the inner and outer circumferential surfaces upside down,
The injection part and the outer circumferential surface form an expansion passage through which the fluid sucked into the body part by the pump flows,
The outer circumferential surface is pressurized by the fluid introduced into the expansion flow path, so that the flexible fluid pipe expands in a direction away from the injection part to the outside,
Pneumatic cable laying device. The method of claim 1,
A flexible rope extending from the one end toward the other end is attached to the outer circumferential surface of the flexible fluid pipe,
Pneumatic cable laying device. The method of claim 1,
A fluid pipe clip portion having a fluid pipe fixing groove is rotatably installed on the bottom surface of the body portion,
The flexible fluid tube,
The one end is detachably fixed to the fluid pipe fixing groove,
Wound along the circumferential direction to the fluid pipe clip portion,
Pneumatic cable laying device. The method of claim 1,
The pump,
A suction part protruding outward through the body part; And
Comprising a discharge part for discharging the fluid introduced through the suction part into the body part,
Pneumatic cable laying device. The method of claim 1,
It is disposed between the other end and the injection unit, further comprising a connection cap coupled to the other end and the injection unit, respectively,
Pneumatic cable laying device. The method of claim 5,
The injection unit,
It has a protruding coupling portion protruding toward the connection cap,
A coupling protrusion is formed on the outer circumferential surface of the protruding coupling part,
The connection cap,
And a concave coupling portion recessed by a predetermined depth radially outward from an inner circumferential surface to accommodate the protruding coupling portion on one side,
A coupling groove is formed on the inner circumferential surface of the concave coupling portion to mesh with the coupling protrusion,
A fluid pipe receiving groove is formed on the other side opposite to the one side,
Pneumatic cable laying device. Arranging a pneumatic cable laying device on one side of the pipeline;
Expanding the flexible fluid pipe toward the other side opposite to one side of the pipe by operating a pump in the body of the pneumatic cable laying device;
Removing the fluid inside the expanded flexible fluid pipe by operating the pump in reverse;
Connecting the flexible fluid pipe and the cable at the other side of the pipe;
Including the step of pulling the cable toward one side of the pipe,
Pneumatic cable laying method. The method of claim 7,
Separating the flexible fluid pipe from the body portion; And
Further comprising the step of connecting the flexible fluid pipe and the line line at one side of the pipe,
Pneumatic cable laying method. A body portion having an injection portion that is opened toward the outside;
A pump installed in the body portion;
A fluid pipe clip part rotatably installed on the bottom of the body part; And
A closed end is detachably coupled to the fluid pipe clip portion, and includes a flexible fluid pipe wound along a circumferential direction to the fluid pipe clip portion,
The other open end of the flexible fluid pipe penetrates the injection unit and is disposed on the body, and is connected to the injection unit in a state in which the inner and outer circumferential surfaces are turned upside down,
The injection part and the outer circumferential surface form an expansion passage through which the fluid sucked into the body part by the pump flows,
The outer circumferential surface is pressurized by the fluid introduced into the expansion flow path, so that the flexible fluid pipe is expanded in a direction away from the injection unit to the outside,
Pneumatic cable laying device. The method of claim 9,
The pump includes a first intake/exhaust port protruding outward through the body portion and a second intake/exhaust port communicating with the first intake/exhaust port,
Pneumatic cable laying device. The method of claim 9,
A flexible rope extending from the one end toward the other end is attached to the outer circumferential surface of the flexible fluid pipe,
Pneumatic cable laying device.

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