Apparatus for conveying cable with air-pressure

Abstract

A cable conveying device is disclosed. The cable conveying device includes: an air compressor; a conveying head unit coupled to one end of a curved pipe and introducing air discharged from the air compressor into the internal space of the curved pipe; and a resistance unit that moves from the internal space of the curved pipe to the outlet side, which is the other end of the curved pipe, by the pressure of the air introduced by the conveying head unit.

Description

Technology Field

[0001] The present invention relates to a cable conveying device for laying a cable inside a curved pipe using air pressure. Background Technology

[0002] Numerous cables are installed for various purposes in large buildings and ships.

[0003] Generally, it is common practice to securely install power supply cables and communication lines to ceilings or walls using cable trays, which serve as passageways while accommodating and supporting multiple cables for protection. Cable trays are typically made of non-combustible materials.

[0004] In other words, in an open space, cables can be easily installed using support devices such as trays.

[0005] However, fiber optic cables that do not generate sparks when transmitting signals from the outside are installed inside pipes transporting explosive or flammable materials. Of course, in addition to fiber optic cables, there can be various types of cables that must be installed inside the pipes.

[0006] Pipes in which cables must be installed within an internally penetrated space are manufactured not only in the form of straight pipes but also in various curved pipe forms depending on the conditions of the installation site.

[0007] However, laying cables inside curved pipes is not only a difficult task, but it also presents the problem of requiring a significant amount of time for installation. Prior art literature

[0008] Korean Registered Patent No. 10-1964633 Korean Registered Patent No. 10-2101168 The problem to be solved

[0009] The present invention is intended to provide a cable conveying device that enables the cable laying operation to be completed within a short time, even if the pipe, where the cable is to be installed in the internal through-hole, is formed into a curved pipe of various shapes depending on the installation location.

[0010] The present invention is intended to provide a cable conveying device that maximizes work convenience by allowing a cable to be laid in the internal space of a curved pipe using air pressure.

[0011] Other objectives of the present invention will be easily understood through the following description. means of solving the problem

[0012] According to one aspect of the present invention, a cable conveying device is provided, comprising: an air compressor; a conveying head portion coupled to one end of a curved pipe and introducing air discharged from the air compressor into the internal space of the curved pipe; and a resistance portion that moves from the internal space of the curved pipe to the outlet side, which is the other end of the curved pipe, by the pressure of the air introduced by the conveying head portion, wherein a through hole is formed in the body of the conveying head portion to introduce a cable into the internal space of the curved pipe, and the end portion of the cable introduced into the internal space of the curved pipe is connected to the resistance portion by a connecting means, and the cable is moved to be installed in the internal space of the curved pipe by the movement of the resistance portion by the pressure of the air in the internal space of the curved pipe.

[0013] The above resistance part can be expanded and deformed into a concave shape by the pressure of air flowing into the internal space of the curved tube.

[0014] One or more strip-shaped limiting means having a predetermined width and thickness may be fixedly mounted on the body of the above-mentioned resistor to limit the degree of expansion deformation.

[0015] In order for the movement path of the resistor part within the internal space of the curved pipe to be limited to the extension direction of the guide wire, the resistor part is connected to the guide wire using a guide means, and the guide wire can be pre-installed to be introduced into the internal space of the curved pipe through the through hole and extended toward the exit side of the curved pipe.

[0016] The air compressor may be configured to discharge air at a pressure corresponding to one or more of the length of the curved pipe, the number of bends of the curved pipe, and the diameter of the cable.

[0017] Other aspects, features, and advantages other than those described above will become clear from the following drawings, claims, and detailed description of the invention. Effects of the invention

[0018] According to an embodiment of the present invention, even if the pipe on which the cable is to be installed in the internally penetrating space is formed into a curved pipe of various shapes depending on the installation location, the cable laying work can be completed within a short time, thereby improving work efficiency.

[0019] In addition, by using air pressure to lay cables within the internal space of the curved pipe, it also has the effect of maximizing work convenience. Brief explanation of the drawing

[0020] FIG. 1 is a diagram showing the configuration of a cable conveying device according to one embodiment of the present invention. FIG. 2 is a drawing for explaining the operation of an extension part according to an embodiment of the present invention. FIG. 3 is a drawing for explaining a method for controlling the incoming airflow according to an embodiment of the present invention. FIG. 4 is a diagram showing the process of laying a cable inside a curved pipe using a cable conveying device according to one embodiment of the present invention. Specific details for implementing the invention

[0021] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0022] Furthermore, in the description referring to the attached drawings, identical components are assigned the same or related reference numerals regardless of drawing symbols, and redundant descriptions thereof are omitted. The attached drawings are depicted with some exaggeration for the convenience of explanation and understanding, and it is obvious that the present invention is not limited to the size of each component depicted in the attached drawings.

[0023] FIG. 1 is a diagram showing the configuration of a cable conveying device according to an embodiment of the present invention, and FIG. 2 is a diagram explaining the operation of an extension part according to an embodiment of the present invention. FIG. 3 is a diagram explaining a method for controlling the inflow of air according to an embodiment of the present invention, and FIG. 4 is a diagram showing the process of laying a cable inside a curved pipe using a cable conveying device according to an embodiment of the present invention.

[0024] Referring to FIG. 1, the cable conveying device may include a conveying head section (110), an extension section (120), a resistor section (140), and an air compressor (160).

[0025] The pressure head (110) is coupled to one end of the curved pipe (180), and a through hole (112) may be formed in the body. The through hole (112) may be used as a space for introducing a guide wire (175) and a cable (170) into the interior of the curved pipe (180), and the through hole (112) may be formed in a shape such as a circle or a square.

[0026] Additionally, an air transfer pipe (115) is arranged inside the body of the pressure head section (110) to be connected to an air hose (165) and to introduce air of a predetermined pressure discharged from an air compressor (160) into the interior of the curved pipe (180).

[0027] In FIG. 1, the body of the pressure head (110) is exemplified as having an L-shaped cross-sectional shape so that a guide wire (175) and a cable (170) are efficiently introduced into the interior of the curved pipe (180) through the through hole (112) of the pressure head (110), and an air hose (165) connected to an air compressor (160) can be easily connected to a fastening means (e.g., a nipple) provided in the pressure head (110) and connected to the air transfer pipe (115).

[0028] However, it is obvious that by aligning the introduction direction of the guide wire (175) and cable (170) with the connection direction of the air hose (165), the body shape of the pressure head part (110) can also be formed into a cuboid shape, a cylinder shape, etc.

[0029] The extension part (120) is mounted in a manner that surrounds the outer surface of one end of the pressure head part (110), which corresponds to the connection part with one end of the curved pipe (180).

[0030] The expansion portion (120) may be formed of, for example, a rubber material, and a plurality of insertion holes are formed along the extension direction of one end of the pressure head portion (110). A corresponding insertion bar (130) is inserted into each insertion hole to expand the expansion portion (120) outward.

[0031] Referring to FIG. 2, which illustrates the operation process of the expansion part (120), the size of the outer diameter when the expansion part (120) is mounted on one end of the pressure head part (110) can be formed to be relatively smaller than the size of the inner diameter of the curved pipe (180) into which the pressure head part (110) is coupled and the guide wire (175) and cable (170) are introduced.

[0032] A guide wire (175) and a cable (170) are positioned to pass through the through hole (112) of the pressure head (110), and a resistor (140) is positioned so as to be fixed to one end of the cable (170) and also movable along the guide wire (175). Then, one end of the pressure head (110), which is equipped with an expansion part (120) having a relatively small outer diameter, is inserted into one end of a curved pipe (180) having a relatively large inner diameter (see FIG. 2 (a)). At this time, the through hole (112) of the pressure head (110) and the internal space of the curved pipe (180) can be arranged to communicate with each other.

[0033] Afterwards, in order to cause the expansion part (120) mounted on one end of the pressure head part (110) to expand outward, an insertion bar (130) corresponding to each insertion hole is inserted.

[0034] By inserting the insertion bar (130), for example, the expansion part (120) made of rubber material expands outward, and as a result, the pressure head part (110) and the curved pipe (180) are fixedly connected to each other in such a way that the outer circumference of the expansion part (120) is in close contact with the inner circumference of the curved pipe (180) (see FIG. 2 (b)).

[0035] Referring again to FIG. 1, the resistor (140) can be formed in the shape of, for example, a parachute, a pouch, etc., so as to trap air of a predetermined pressure provided by an air compressor (160) and move by the propulsion force of the pressure of the air.

[0036] The resistance part (140) can be formed of, for example, a fiber material, vinyl material, etc., so as to be freely deformed into a shape that traps air (i.e., a concave shape) while suppressing or minimizing the passage of air.

[0037] The resistance part (140) is made of a material that allows for free expansion and deformation of its shape, so it has the advantage of being able to move freely inside the curved tube (180) even if it collides with the inner circumference of the curved tube (180) during the process of moving by air pressure.

[0038] However, in order to limit the degree of shape change of the resistor (140) by air, so that the resistor (140) can effectively trap air and not be overturned by the pressure of air, a band-shaped limiting means (142) may be fixedly mounted on the circumference of the resistor (140). The limiting means (142) may be formed, for example, one or more of a metal band, a metal ring, a rubber band, etc., having a predetermined width and thickness.

[0039] By mounting the limiting means (142) so as to wrap around the body of the resistor part (140) in a band shape in a shape substantially perpendicular to the direction of air inflow, when air discharged from the air compressor (160) reaches the resistor part (140), the resistor part (140) may be deformed in a shape in which the lower region of the limiting means (142) among the body regions is relatively expanded.

[0040] In addition, in order to allow the resistor part (140) to move along a designated path, the resistor part (140) can be movably connected to a guide wire (175) using a guide means (150), such as a guide ring.

[0041] The guiding means (150) can be fixed to a limiting means (142) fixedly mounted on the resistor part (140). When air pressure is applied to the resistor part (140), the resistor part (140) will move along the path extended by the guide wire (175) by the air pressure.

[0042] In order to allow the resistance member (140) to move along a designated path to the other end (i.e., outlet) of the curved pipe (180) by air pressure, a guide wire (175) may be pre-installed to extend outside the other end of the curved pipe (180) (see FIG. 1).

[0043] When the resistance member (140) is moved to the other end of the curved pipe (180) by air pressure, the cable (170) is also moved together, so that when the resistance member (140) passes the other end of the curved pipe (180), the cable (170) can be installed inside the curved pipe (180), and one end of the cable (170) can be fixed to the resistance member (140).

[0044] Specifically, a fixing means (135) is fixed to one end of the cable (170), and one end of the fixing means (135) and one end of the resistor part (140) can be connected to each other by a connecting means (145). One end of the connecting means (145) is movably fastened to the fixing means (135), and the other end can be fixed to one side of the resistor part (140).

[0045] When the cable (170) moves together with the resistor (140) by the air pressure applied to the resistor (140), a connecting means (145) may be fixed to the lower region of the resistor (140) to prevent damage to the resistor (140).

[0046] Additionally, in order to allow the cable (170) to move easily in correspondence with the movement of the resistance part (140) by air pressure, the cable (170) may be placed in a state where it is wound on a cable drum (not shown) that rotates with a small force.

[0047] The air volume and pressure of the air discharged by the air compressor (160) and introduced into the internal space of the curved pipe (180) through the air hose (165) and the air transfer pipe (115) can be adjusted according to one or more of the length of the curved pipe (180) to be laid with the cable (170), the number of bends of the curved pipe (180), and the diameter of the cable (170) to be laid inside the curved pipe (180).

[0048] The amount of air to be discharged into the internal space of the curved pipe (180) through the air transfer pipe (115) can be controlled by the operation of the damper part (125), which adjusts the area of ​​the open space of the air transfer pipe (115) by rotational operation (see FIG. 3).

[0049] Hereinafter, with reference to FIGS. 1 and FIGS. 4, the process of laying a cable (170) inside a curved pipe (180) using a cable conveying device will be briefly explained.

[0050] As illustrated in FIG. 1, the guide wire (175) is positioned to penetrate both the through hole (112) formed in the conveying head (110) and the internal space of the curved pipe (180) where the cable (170) is to be installed, and the cable (170) to be installed in the internal space of the curved pipe (180) is positioned to penetrate the through hole (112) formed in the conveying head (110). At this time, the guide means (150) fixed to the resistor (140) may be connected to the guide wire (175) so as to be movable along the extension direction of the guide wire (175).

[0051] Additionally, a fixing means (135) is fixed to one end of the cable (170) exposed through the through hole (112), and the fixing means (135) is fixed to the resistor part (140) via a connecting means (145). Here, one end of the connecting means (145) is movably connected to the fixing means (135), and the other end can be fixed to one side of the resistor part (140).

[0052] Subsequently, as illustrated in FIG. 4(a), the pressure head part (110) and the curved pipe (180) are joined together in such a manner that one end of the pressure head part (110) equipped with the extension part (120) is fitted into the internal space of one end of the curved pipe (180). At this time, in order to extend the extension part (120) outward so that the pressure head part (110) and the curved pipe (180) are fixedly joined together, an insertion bar (130) corresponding to each of the insertion grooves formed in the extension part (120) may be inserted (see FIG. 2).

[0053] Next, the air compressor (160) is operated to discharge air at a specified pressure, and the air discharged from the air compressor (160) flows into the internal space of the curved pipe (180) through the air hose (165) and the air transfer pipe (115) to apply a propulsive force to the resistance part (140).

[0054] The resistance member (140) is formed in the shape of, for example, a pocket or a parachute and moves along the internal space of the curved tube (180) until it passes through the other end of the curved tube (180) while in an expanded and deformed state by air pressure (see FIG. 4 (b) and (c)).

[0055] At this time, the resistance member (140) moves along the extension direction of the guide wire (175) connected to the guide means (150) so as to be movable, and the cable (170), with one end fixed by the connecting means (145) and the fixing means (135), also moves together so that the cable (170) is installed in the internal space of the curved pipe (180).

[0056] When the resistance member (140) passes through the other end (i.e., exit) of the curved pipe (180) and exits to the outside of the curved pipe (180), one end of the cable (170) connected to the resistance member (140) by the connecting means (145) and the fixing means (135) also exits to the outside of the curved pipe (180). At this time, the internal space of the curved pipe (180) is in a state where the cable (170) has been installed.

[0057] When the cable (170) is laid in the internal space of the curved pipe (180), the guide wire (175) is removed from the internal space of the curved pipe (180) and the through hole (112), the fixing means (135) is separated from one end of the cable (170), the cable (170) is cut at an upper position of the curved pipe (180) or the pressure head part (110), and the pressure head part (110) is separated and removed from one end of the curved pipe (180), thereby completing the curved pipe (180) with the cable (170) laid in the internal space (see FIG. 4 (d)).

[0058] As described above, the cable conveying device according to the present embodiment has the feature of maximizing work convenience and reducing work time by enabling the cable to be laid in the internal space of a curved pipe using air pressure.

[0059] Although the present invention has been described above with reference to embodiments thereof, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0060] 110: Pressure head 112: Through hole 115 : Air transfer pipe 120 : Extension section 125 : Damper section 130 : Insertion bar 135 : Fixing means 140 : Resistance part 142: Limiting means 145: Connecting means 150 : Guide means 160 : Air compressor 165 : Air hose 170 : Cable 175 : Guide wire 180 : Bent pipe

Claims

Claim 1 Air compressor; a pressure head unit coupled to one end of a curved pipe and introducing air discharged from the air compressor into the internal space of the curved pipe;The apparatus includes a resistor portion that moves from the internal space of the curved pipe to the outlet side, which is the other end of the curved pipe, by the pressure of air introduced from the conveying head portion, wherein a through hole is formed in the body of the conveying head portion to introduce a cable and a guide wire into the internal space of the curved pipe, and to limit and guide the movement path of the resistor portion, the guide wire introduced through the through hole is pre-installed to extend to the outlet side of the curved pipe corresponding to the path where the wire is to be laid, and a limiting means formed of a metal ring or metal band is mounted to wrap around the body of the resistor portion in a band shape to continuously keep the inlet for air to be introduced open, and the resistor portion expands and deforms into a concave shape by the pressure of air introduced into the internal space of the curved pipe, wherein the lower region of the limiting means within the body region of the resistor portion expands and extends, the end region of the cable introduced into the internal space of the curved pipe is connected to the resistor portion by a connecting means, and the resistor portion is connected to the guide wire so as to move along the path formed by the guide wire using a guiding means. A cable conveying device comprising: a resistor portion expanded by the pressure of air flowing into the inner space of the curved pipe, which moves along the guide wire by the pressure of the air to lay the cable in the inner space of the curved pipe; wherein the conveying head portion is equipped with an air transfer pipe to introduce air discharged from the air compressor into the inner space of the curved pipe; wherein the air transfer pipe is equipped with a damper portion that controls the airflow volume to be introduced into the inner space of the curved pipe by adjusting the opening area of ​​the air transfer pipe through rotational operation; and wherein the airflow volume to be introduced into the inner space of the curved pipe is adjusted by rotational operation of the damper portion so as to correspond to the number of bends of the curved pipe and the diameter of the cable to be laid inside the curved pipe. Claim 2 In claim 1, the cable conveying device wherein the connecting means is fixed to the lower region of the resistor part. Claim 3 delete Claim 4 delete Claim 5 delete

Images