KR102658486B1 - underground transmission cable removal new construction method using the deconstruction cutting pulling apparatus of the underground power cable - Google Patents

Abstract

In the present invention, the roller guide body that guides the two-circuit cable to the cutting body is provided with an upper roller guide and a lower roller guide, and the cable is guided between the upper roller guide and the lower roller guide to lead in to the cutting body, and the upper roller guide is connected to the lower roller. By allowing the guide to go up and down, it can be used regardless of the thickness of the double-circuit cable. Regardless of the thickness of the double-circuit cable, it can firmly and closely support the cable entering the cutting body, allowing the cable to be fed into the cutting body. The guide box is easy to use, and the double-circuit cable installed inside the pipe can be easily and easily pulled out from the cable and the volume can be reduced by cutting the pulled out double-circuit cable, making it easy to remove and collect the cut double-circuit cable. In addition, when a new 2-circuit cable is installed inside a conduit where a 2-circuit cable has been removed, there is no need to provide a separate pulling device because each pulling element that pulls the 2-circuit cable is provided, and a pulling device that pulls the newly installed 2-circuit cable By making it easy to wind the belt, workability and convenience can be greatly improved, and the overall size can be minimized as one device is equipped with a cutting member that cuts the 2-circuit cable and a pulling member that pulls the new 2-circuit cable. A pulling device for demolition and cutting of underground power cables, which is easy to transport and store, and a construction method for demolition and new construction of underground power cables using the same are disclosed.

Description

Demolition, cutting, and pulling device for a two-circuit underground power cable and a new construction method for demolition and construction of a two-circuit underground power cable using the same {underground transmission cable removal new construction method using the deconstruction cutting apparatus of the underground power cable}

The present invention relates to a pulling device for demolition and cutting of a two-circuit underground power cable and a method for demolition and new construction of a two-circuit underground power cable using the same. More specifically, when replacing a cable buried inside a pipeline, the buried cable is removed and cut. At the same time, it not only makes it easy to construct inside the pipeline by pulling newly constructed cables, but also replaces the cable buried inside the pipeline by using the removal and cutting pulling device of a single underground power cable. A removal/cutting/pulling device for 2-circuit underground power cables that removes and easily cuts existing cables and simultaneously pulls newly constructed cables to facilitate installation inside the pipeline, and a 2-circuit underground power cable using the same. This is about the method of demolition and new construction of power cables.

In general, underground facilities are superior to above-ground facilities in social and economic aspects such as stable supply of power, improved supply reliability, urban environmental beautification, and safety, so the number of underground facilities continues to increase every year.

These underground facilities consist of pipes buried in the ground, manholes buried on both sides of the pipes, and new cables installed in the pipes between manholes. Transformers or switches are located at branch points or power supply points.

Cables installed inside such underground pipes are usually supplied locally wound on drums, and the length of cables installed at one time is approximately 250 to 300 m. Due to the nature of electricity, 3 cable strands are installed in one hole of the pipe. Alternatively, one strand of cable goes into one hole and three strands are called one line (for three-phase alternating current), and the cable wound around the drum is moved inside the underground pipe and then installed by unwinding the cable.

In recent years, as interest in the residential environment and urban aesthetics has increased, undergrounding projects to improve existing overhead distribution lines into underground distribution lines are currently actively underway. In the future, underground power facilities will increase rapidly, and the number of years of installed underground cables will be reduced. Considering this, the cables that were constructed will have to be removed and replaced with new cables within the next few years.

The current cable removal (recovery) process involves pulling and dismantling cables with a cable puller using an electric motor. This involves repeatedly tying and pulling cables within a narrow manhole, and cutting the cable about 3 meters at a time when it comes out of the manhole. Therefore, considering that one span of a manhole is 250 to 300 m, it is a complex and very difficult situation in which tying and untying must be repeated about 80 to 100 times or more to complete the demolition of one section.

Moreover, while cable removal work requires more work time than cable new construction work, the construction cost is simply reflected at 50% of the new construction cost, so in actual sites, heavy equipment such as crane vehicles or backhoes are used rather than cable pullers. The method used is to pull it out to the side of the road and spread it out to dismantle it.

However, pulling and dismantling the cable using a vehicle or heavy equipment may be effective in reducing work time, but since the cable is pulled at high speed, speed control is difficult, and there is a risk of damage to other live cables in the manhole. As about 250 to 300 meters of cable has to be pulled out to the ground roadside, the traffic control section becomes longer and there are problems with the safety of passing vehicles and workers.

In addition, in order to retrieve cables removed from the roadside, two people form a team and move about 2 to 3 meters with a large manual cutter to cut the removed cables. As a result, a lane of about 250 to 300 meters is controlled by the cable cutting operation, reducing traffic. As communication is being hindered, there is a need for improvement in the cable removal process.

Accordingly, various technologies that can automatically remove cables are being developed.

For example, a vehicle-mounted automatic three-phase distribution cable removal device, registered patent number 10-1031795, has been developed, which includes a housing forming a skeleton, a plurality of lower rollers rotatably provided in the housing, and an upper part of the lower rollers. A traction machine and a distribution cable transport having an upper roller that can be raised and lowered to face the A base plate formed to be able to slide in one direction, a cutter part coupled to the base plate so as to be able to go up and down, a roller bed that supports and guides the distribution cable, and upper and downstream clamps and the base provided on both sides of the roller bed. It consists of a cutting table equipped with a transfer cylinder that reciprocates the plate in the horizontal direction.

This conventional technology allows the work time to be significantly shortened by pulling out the cable inside the power conduit or pipe with a winch, connecting it to the puller of the demolition device, cutting and tying the cable at the same time.

However, in the case of this prior art, there is a problem that the configuration is inevitably complicated because a plurality of upper rollers that guide the removed cable to the cutting table side are pressed toward the lower roller by each hydraulic cylinder to pressurize the cable.

Moreover, since the retractor and the cutting table are provided independently and connected by the retractor, the overall size inevitably increases, which makes it difficult to move or store.

In addition, since it can only be used to remove cables inside a pipeline, there is a problem that, for example, in order to install a new cable after removing the cable, a pulling device that pulls the new cable must be additionally provided.

Patent Document 1: Republic of Korea Patent No. 10-1031795 (registered on April 21, 2011) Patent Document 2: Republic of Korea Patent No. 10-1930403 (registered on December 12, 2018)

The present invention can easily and easily withdraw the double-circuit cable installed inside the pipe from the inside of the pipe and reduce the volume by cutting the drawn double-circuit cable, making it easy to remove and collect the cut cable and removing the double-circuit cable. When a new cable is installed inside the demolished pipe, a pulling body that pulls the cable is provided, so there is no need to provide a separate pulling body, and the work performance is improved by making it easy to wind the pulling belt that pulls the newly installed two-circuit cable. Convenience can be greatly improved, and the two-circuit underground cable is equipped with a cutting member that cuts each two-circuit cable and a pulling member that pulls the new cable in one device, minimizing the overall size and making it easy to move and store. The purpose is to provide a power cable demolition cutting and pulling device and a two-circuit underground power cable demolition and new construction method using the same.

As a means to achieve the above object, the present inventor's demolition, cutting, and pulling device for a two-circuit underground power cable includes a support body provided with a plurality of vertical frames and a plurality of horizontal frames respectively connecting the plurality of vertical frames; a roller guide body provided on one upper side of the support body to guide the cable drawn out from inside the pipe; a cutting member provided on the other upper side of the support body and facing the roller guide body to cut the cable guided through the roller guide body to a predetermined length; a first pulling body provided at the bottom of the support body and having a winding drum that pulls and winds the pulling belt connected to the cable when installing a new cable inside the pipe; a roller drive body that transmits power to the roller guide body; In the pulling device for removing and cutting an underground power cable consisting of a first pulling driving body that transmits power to the first pulling body, the roller guide body includes: a roller guide body frame whose lower end is fixed to one upper side of the support body; Cable vertical guides provided on both sides of the front of the roller guide frame to guide the side of the cable entering the roller guide frame; a cable horizontal guide provided at the lower end of the cable vertical guide to guide the lower surface of the cable entering the inside of the roller guide body frame; a lower roller guide located at the inner lower side of the roller guide frame and having a plurality of lower guide rollers arranged horizontally; an upper roller guide located at an upper inner side of the roller guide frame and having a plurality of upper guide rollers corresponding to the plurality of lower guide rollers arranged horizontally; a plurality of vertical sliding rods connected to the upper roller guide; an elevating platform where the upper ends of the plurality of vertical sliding rods are connected to each other; It is fixed to the upper surface of the elevating platform and the elevating cylinder rod is connected to the upper roller guide so that the upper roller guide is lowered toward the lower roller guide or the upper roller guide is elevated from the lower roller guide by the withdrawal and retraction operation of the elevating cylinder rod. It is provided as a lifting and lowering cylinder, and a second pulling body is provided on one side of the first pulling body at the lower end of the support body, and a second pulling driving body that transmits power to the second pulling body is provided.

In addition, the method of demolition and new construction of a two-circuit underground power cable using a demolition cutting and pulling device for a two-circuit underground power cable uses a two-circuit underground power cable demolition cutting and pulling device, and the underground power cable demolition cutting and pulling device is used to cut and pull the underground power cable inside the pipeline. It is located at the top of the connecting first manhole, and the new cable drum around which the new cable is wound is placed at the top of the second manhole connected to the inside of the pipe connected to the first manhole, and then the two-circuit demolition cable already installed inside the pipe is connected to the above. It is pulled out through the first manhole, and is pulled out with the roller guide body of the underground power cable demolition cutting and pulling device located at the top of the first manhole, and the drawn out two-circuit demolition cable is cut to a certain length with the cutting body and placed inside the pipeline. An underground power cable demolition and cutting process for removing and cutting the already installed two-line demolition cable; A new cable pulling process is provided to install a new two-circuit cable pulled from the new cable drum through the second manhole into the pipe where the two-circuit demolished cable previously installed by the underground power cable demolition and cutting process has been removed.

In the present invention, a roller guide body that guides the cable in toward the cutting body is provided with an upper roller guide and a lower roller guide, and the cable is guided between the upper roller guide and the lower roller guide to lead in toward the cutting body, and the upper roller guide is connected to the lower roller guide. It can be used regardless of the thickness of the cable by allowing it to be raised and lowered. Regardless of the thickness of the cable, the cable entering the cutting body can be firmly and closely supported, making it easy to guide the cable entering the cutting body. Cables installed inside the pipeline can be easily pulled out from the cable and the volume can be reduced by cutting the pulled cable, making it easy to remove and collect the cut cable, and installing a new cable inside the pipeline where the cable was removed. Since there is a pulling body that pulls the cable when installing a new cable, there is no need to provide a separate pulling body. Workability and convenience can be greatly improved by making it easy to wind the pulling belt that pulls the newly installed cable. The device is equipped with a cutting member that cuts the cable and a pulling member that pulls the new cable, minimizing the overall size and making it easy to move and store.

Figure 1 is a perspective view showing the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 2 is a one-side configuration diagram showing the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 3 is a configuration diagram of the demolition cable being introduced into the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 4 is a configuration diagram of the demolition cable being cut by the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 5 is a configuration diagram showing the configuration of the pulling actuator of the present inventor's removal and cutting pulling device for a two-circuit underground power cable.
Figure 6 is a diagram showing the configuration of the roller drive body of the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 7 is a diagram showing the configuration of the cutting body of the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 8 is a configuration diagram of the demolition cable being inserted into the cut body of the present inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figure 9 is a perspective view showing the pulling actuator of the present inventor's removal and cutting pulling device for a two-circuit underground power cable.
Figure 10 is a perspective view showing the pulling belt guide portion of the present inventor's removal and cutting pulling device for a two-circuit underground power cable.
Figures 11 and 12 are conceptual diagrams showing the removal and cutting process of a two-circuit underground power cable by the inventor's two-circuit underground power cable removal and cutting pulling device.
Figures 13 and 14 are conceptual diagrams showing the pulling process of a new two-circuit cable by the inventor's demolition cutting and pulling device for a two-circuit underground power cable.
Figures 15 to 19 are process diagrams showing the construction process of the present inventor's two-circuit underground power cable demolition and new construction method.

Hereinafter, other purposes and features of the present invention in addition to the above purposes will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

Hereinafter, the demolition, cutting, and pulling device for a two-circuit underground power cable according to an embodiment of the present invention and the method for demolition and new construction of a two-circuit underground power cable using the same will be described in more detail with reference to the attached drawings.

As shown, the present inventor's demolition cutting and pulling device for a two-circuit underground power cable includes a support body (10) provided with a plurality of vertical frames (11) and a plurality of horizontal frames (12) connecting the plurality of vertical frames (11), respectively; , a roller guide body 20 provided on one side of the upper end of the support body 10 to guide the cable (C) drawn out from the inside of the pipe, and a roller guide body (20) provided on the other upper side of the support body 10, the roller guide body ( 20) and a cutting body 30 for cutting the cable C guided through the roller guide body 20 to a certain length, and a cutting body 30 provided at the bottom of the support body 10 to cut the cable C into the pipe. ), a first pulling body (40) having a winding drum that pulls and winds the pulling belt connected to the cable (C) when installing a new line, a roller drive body (50) that transmits power to the roller guide body (20), It relates to a pulling device (100) for removing and cutting a two-circuit underground power cable consisting of a first pulling driving body (60) that transmits power to the first pulling body (40), wherein one side of the first pulling body (40) A second pulling body 40a is provided at the lower end of the support 10, and a second pulling driving body 60a is provided to transmit power to the second pulling body 40a.

In the present invention, a roller guide body 20 for introducing a cable (C) is provided on one upper side of the support body 10, and a cutting body 30 for cutting the cable (C) is provided on the other upper side of the support body 10. Since the pulling body 40 around which the pulling belt that is pulled when installing the cable C is wound is provided at the bottom of the support body 10, the cable installed inside the pipe can be easily and easily pulled out from the cable and the pulled cable can be easily pulled out. Because the volume can be reduced by cutting, it is easy to remove and collect the cut cable. There is no need to provide a separate pulling body to pull the cable when installing a new cable, and the pulling belt that pulls the newly installed cable is installed. By making winding easy, workability and convenience can be greatly improved.

The roller guide body 20 of the present invention is provided with a roller guide body frame 21, the lower end of which is fixed to one upper side of the support body 10, and a roller guide body frame 21, respectively, on both sides of the front of the roller guide frame 21. A cable vertical guide 22 that guides the side of the cable C entering the inside of the guide frame 21, and a cable vertical guide 22 provided at the bottom of the cable vertical guide 22 and entering the inside of the roller guide frame 21. A cable horizontal guide (23) that guides the lower surface of the cable (C), a lower roller guide (24) located at the inner lower side of the roller guide body frame (21) and on which a plurality of lower guide rollers (24a) are arranged horizontally, and An upper roller guide 25 located at the inner top of the roller guide frame 21 and having a plurality of upper guide rollers 25a corresponding to the plurality of lower guide rollers 24a arranged horizontally, and the upper roller guide 25 A plurality of vertical sliding rods 26 are connected, an elevating platform 27 to which the upper ends of the plurality of vertical sliding rods 26 are connected, and a lifting cylinder rod 28 fixed to the upper surface of the elevating platform 27. The upper roller guide 25 is lowered toward the lower roller guide 24 or the upper roller guide 25 is lowered toward the lower roller by the withdrawal and retraction operation of the raising and lowering cylinder rod 28, which is connected to the upper roller guide 25. It is provided with a raising and lowering cylinder (29) that allows it to be raised and lowered from the guide (24).

The lower roller guide 24 is fixed to the roller guide frame 21, the lower end of which is fixed to one upper side of the support 10. Accordingly, a plurality of lower guide rollers ( 24a) As also shown, the roller guide body frame 21 is provided in a fixed position at the lower end.

The upper roller guide (25) is located at the inner top of the roller guide frame (21) and is connected to the plurality of vertical sliding rods (26) and to the lowering cylinder rod (28) of the lowering cylinder (29). Accordingly, the upper roller guide 25 is lowered toward the lower roller guide 24 or the upper roller guide 25 is lowered toward the lower roller due to the operation of the lifting cylinder rod 28 being lifted and lowered from the lifting cylinder 29. It is lifted and lowered from the roller guide (24).

In addition, as the upper roller guide 25 moves up and down, a plurality of upper guide rollers 25a horizontally arranged on the upper roller guide 25 are lowered toward the lower guide roller 24a, or the upper guide roller 25a is lowered toward the lower guide roller (25a). It is lifted from 24a).

In the present invention achieved in this way, the lower roller guide (24) is lifted and lowered from the upper roller guide (25) so that the lower guide roller (24a) and the upper guide roller (25a) are spaced apart from each other, and then the cable (C) is connected to the lower guide roller. The cable (C) located between the lower guide roller (24a) and the upper guide roller (25a) is lowered by lowering the upper roller guide (25) and the lower roller guide (24). The cable (C), which is tightly adhered between the lower guide roller (24a) and the upper guide roller (25a) by the roller drive body (50), is connected to the lower guide roller (24a) and the upper guide roller (25a). It is brought into the cutting body (30) by the rotational motion of .

The roller drive body 50 of the present invention includes a drive transmission sprocket 51 installed on one side of one of the plurality of lower guide rollers 24a (24a), and the plurality of lower guide rollers 24a. A drive transmission motor part 52 connected to a drive transmission sprocket 51 installed on one side of one of the drive transmission chains 52a, each protruding from one side of the upper roller guide 25a, and the plurality of upper ends. A first interlocking sprocket 53 and a second interlocking sprocket 54 respectively installed on the upper guide rollers 25a located on both sides of the guide rollers 25a, respectively, from one side of the lower roller guide 24. The protruding third interlocking sprocket (55) and fourth interlocking sprocket (56), the first interlocking sprocket (53), second interlocking sprocket (54), third interlocking sprocket (55), and fourth interlocking sprocket (56) ) is connected to an interlocking chain 57 that rotates in an endless orbit, and a plurality of protruding chains, each protruding from one side of the lower roller guide 24 and protruding from the lower roller guide 24, and a plurality of lower guide rollers 24a, respectively. It is located between the rotation drive gear 58 and the plurality of rotation drive gears 58 and meshes with the plurality of rotation drive gears 58, respectively, and includes the third interlocking sprocket 55 and the fourth interlocking sprocket 56. It is provided with a plurality of rotation interlocking gears 59, each of which is installed on a axis and rotated by the rotational motion of the third interlocking sprocket 55 and the fourth interlocking sprocket 56.

In addition, when the upper roller guide 25 is lowered toward the lower roller guide 24 by the pulling operation of the lowering cylinder rod 28 of the lowering cylinder 29 connected to the lowering platform 27, the interlocking chain When the upper roller guide 25 is lowered toward (57) and lifted from the lower roller guide 24 by the retraction operation of the lowering cylinder rod 28 of the lowering cylinder 29, it is separated from the interlocking chain 57. It is provided with a separate driving connection part (70).

In the present invention made in this way, when the drive transmission sprocket 51 connected to the drive chain 52a is rotated by the drive of the drive transmission motor unit 52, the drive transmission sprocket 51 among the plurality of lower guide rollers 24a The lower guide roller 24a is rotated, and the interlocking chain 57 is rotated accordingly.

In addition, the first interlocking sprocket 53, the second interlocking sprocket 54, the third interlocking sprocket 55, and the fourth interlocking sprocket 56 are connected by the interlocking chain 57 as the interlocking chain 57 rotates. ) rotates, the upper guide roller (25a) in which the first interlocking sprocket (53) and the second interlocking sprocket (54) are respectively axed, and the third interlocking sprocket (55) and the fourth interlocking sprocket (56) are axed in each other. The rotation drive gears 58 installed on each of the lower guide rollers 24a are rotated. At this time, the rotation of the plurality of lower guide rollers 24a is caused by the plurality of rotation drive gears 58 being connected to the plurality of rotation interlocking gears ( 59), as the plurality of rotary drive gears 58 rotate, the plurality of lower guide rollers 24a on which the plurality of rotary drive gears 58 are respectively installed are rotated.

In the present invention made in this way, the lower guide roller (24a) and the upper guide roller (25a) are rotated, and the cable (C) located between the lower guide roller (24a) and the upper guide roller (25a) and in close contact with the lower guide roller (24a) is rotated. The cable C is introduced into the cutting body 30 by the guide roller 24a and the upper guide roller 25a and is sequentially cut by the cutting body 30.

The drive connection part 70 of the present invention includes a cylinder fixture 71 connected to the elevating platform 27, a cylinder fixture 71 fixed to the top of the cylinder fixture 71, and a drive connection cylinder rod 72 penetrating toward the lower side. A driving connection cylinder 73, a driving connection guide 75 extending vertically downward from the lower surface of the cylinder holder 71 and having a guide groove 74 on the inner surface along the vertical longitudinal direction, and the driving connection guide 75 ), one side of which is in close contact with the drive connection cylinder rod 72, which is connected to the upper surface, and is raised and lowered along the vertical longitudinal direction of the drive connection guide 75 by the pull-out operation of the drive connection cylinder rod 72. A guide 76, a connection sprocket shaft 77 that extends laterally on the inside of the connection sprocket guide 76 and one side of which is inserted into the guide groove 74 of the drive connection guide 75, and the connection sprocket shaft 77 ), the connection sprocket guide 76 is raised and lowered from the interlocking chain 57 by the movement of raising and lowering and is separated from the interlocking chain 57, or is lowered toward the interlocking chain 57 and connected to the interlocking chain 57. It is provided with a drive connection sprocket (78) that presses the interlocking chain (57) to tighten the tension of the interlocking chain (57).

In the present invention made in this way, by pressing the interlocking chain 57 of the driving connection part 70, the interlocking chain 57 is tensioned, and the first interlocking sprocket 53 and the second interlocking sprocket connected to the interlocking chain 57 are The interlocking sprocket 54, the third interlocking sprocket 55, and the fourth interlocking sprocket 56 are rotated by the rotation of the interlocking chain 57.

That is, the upper roller guide 25 is raised or lowered from the lower roller guide 24, thereby forming the first interlocking sprocket 53, the second interlocking sprocket 54, the third interlocking sprocket 55, and the fourth interlocking sprocket. As the tension of the interlocking chain 57 connecting the interlocking sprocket 56 becomes loose, the interlocking chain 57 with the loosened tension is connected to the drive connection sprocket (70) of the drive connection portion 70 as shown in FIG. Since the interlocking chain 57 is tense as it is pressed by 78), the first interlocking sprocket (53), the second interlocking sprocket (54), the third interlocking sprocket (55) and the third interlocking sprocket (55) are caused by rotation of the interlocking chain (57). The 4-linked sprocket (56) can be rotated.

The drive connection sprocket 78 is lowered by the drive connection cylinder 73 and presses the interlocking chain 57. When the drive connection cylinder rod 72 of the drive connection cylinder 73 is lowered, the connection sprocket guide (76) is lowered, and accordingly, the drive connection sprocket (78) protruding inside the connection sprocket guide (76) is lowered.

At this time, since the connection sprocket shaft 77 of the connection sprocket guide 76 is inserted into the guide groove 74 of the driving connection guide 75, the connection sprocket guide 76 does not shake or move during the downward motion. As this is prevented, the drive connection sprocket 78 is pressed toward the interlocking chain 57, making it possible to come into close contact with the interlocking chain 57.

The cutting body 30 of the present invention includes a cutting body frame 31 having a lower end fixed to the other upper side of the support 10 and cutting blade guide grooves 31a facing each other at both inner ends, and the cutting body A cable guide guide 32 extends from the frame 31 and extends downward toward the roller guide frame 21, and is transverse to the cut frame 31 and located on the upper side of the cable guide guide 32. A cutting drive having a cable guide roller (33) that guides the upper surface of the cable (C) guided toward the cutting body frame (31), and a lifting and lowering cutting cylinder rod (34a) fixed to the upper surface of the cutting body frame (31). A cylinder 34, an upper cutting blade 35 whose both ends are respectively inserted into the cutting blade guide groove 31a and the raising and lowering cutting cylinder rod 34a is connected to the upper surface, and the cutting body frame 31. A lower cutting blade support 36 located on the inner side but located on the lower side of the upper cutting blade 35, and a lower cutting blade support 36 located laterally on the cutting body frame 31 so as to be located on the outside of the lower cutting blade support 36 and the upper portion. When the cable (C) located between the cutting blade (35) and the lower cutting blade support (36) is cut by the lowering motion of the upper cutting blade (35), bending of the cable (C) is prevented and the cable (C) is cut. To facilitate this, it is provided with a cutting cable guide roller (37) positioned horizontally on the same line as the upper end of the lower cutting blade support (36).

In the present invention made in this way, the upper cutting blade 35 is lowered toward the cable C inserted into the cutting frame 31, thereby cutting the cable C. At this time, the upper cutting blade 35 is used to cut the cable C. By the operation of the driving cylinder 34, the lifting and lowering cutting cylinder rod 34a is repeatedly raised and lowered, cutting the cable C continuously entering the cutting body frame 31 at regular intervals.

In addition, the cable (C) leading into the cutting body frame (31) is supported by the cable guide roller (33), so that the cable (C) and the lower cutting blade support (36) can be maintained in a horizontal state and cut. Since the cable (C) maintains a horizontal state with the cutting cable guide roller (37) before being cut, the cable (C) can be prevented from bending during the cutting process, making the cutting work of the cable (C) easy.

Furthermore, the present invention includes a cylinder bracket 83 fixed to the cutting body frame 31, provided with a cylinder through hole 81, and on which a guide roller cylinder 82 is fixed, and a guide fixed to the cylinder bracket 83. A roller cylinder rod 84 is raised and lowered from a roller cylinder 82 and penetrates the cylinder through hole 81, and the upper end is connected to the roller cylinder rod 84, and a cable guide roller 85 is installed at the lower end. A guide roller bracket 86 is provided to raise and lower the cable guide roller 85 by the raising and lowering movement of the roller cylinder rod 84.

Accordingly, the cable guide roller 85 is lowered to the upper end of the cable (C) by the lowering motion of the roller cylinder rod 84 and firmly presses the upper end of the cable (C), thereby positioning the cable (C). Cable (C) cutting workability is greatly improved by preventing it from twisting or moving.

The first pulling body 40 and the second pulling body 40a of the present invention are respectively installed on a winding drum shaft 41 transverse to the lower end of the support 10 and on the winding drum shaft 41. It is provided with a winding drum (43) equipped with a drum sprocket (42) on one side.

In addition, the first pulling drive body 60 and the second pulling drive body 60a of the present invention include a pulling drive motor unit 61 provided on the lower side of the support body 10, and the support body 10, respectively. A pulling drive sprocket 62 is installed on the inner surface of one lower side of the support and the power is transmitted by the pulling drive motor part 61, and is installed on the inner surface of the lower side of the support 10 and corresponds to the pulling driving sprocket 62. A first pulling interlocking sprocket (64) that is positioned so that it is connected to the pulling drive sprocket (62) by a first pulling interlocking chain (63), and a clutch shaft (65) on one side of which is connected to the first pulling interlocking sprocket (64). ) and a clutch unit having a second pulling interlocking sprocket 67 installed on the other side of the clutch shaft 65 and connected to the drum sprocket 42 of the winding drum 43 and the second pulling interlocking chain 66. It is provided as (68).

The present invention made in this way is to install a new cable inside the pipe where the existing cable has been removed. When the cable is pulled from one side of the pipe to the other side, the pulling belt (B) connected to the newly installed cable is placed on the winding drum (43). Because it can be wound, the workability and convenience of new cables are greatly improved.

In other words, when installing a new cable along the longitudinal direction of the pipe inside a pipe where the existing cable has been removed, one side of the cable is connected with a pulling belt, and then the pulling belt connected to the cable is pulled from one side of the pipe to the other side. Accordingly, a new cable is installed inside the pipe, and at this time, the pulling belt connected to the cable drawn out from the other side of the pipe is wound around the winding drum 43 of the pulling body 40, so that the new cable installation work is easily performed. .

Moreover, as the operation of the winding drum 43 is controlled by the clutch unit 68, the pulling belt can be wound around the winding drum 43 when necessary, that is, when installing a new cable inside the pipe, improving usability and convenience. greatly improves.

For this purpose, the clutch unit 68 of the present invention is horizontal by a support lower frame 681 crossing the lower end of the support 10 and a clutch cylinder bracket 682a on one side of the support lower frame 681. A clutch cylinder 682 that is fixed, a clutch connection bracket 683 that is horizontally pulled in and out with respect to the clutch cylinder 682, a hinge bracket 684 vertically connected to the other side of the support lower frame 681, and A pushing guide (685) whose lower end is connected to the clutch connection bracket (683) and hinged to the hinge bracket (684) and has a pushing protrusion (685a), and a clutch guide that protrudes from the other outer surface of the clutch shaft (65). A protrusion 686 and a pushing guide groove 687a, which is installed on the other outer surface of the clutch shaft 65 and into which the pushing protrusion 685a of the pushing guide 685 is inserted, are provided along the outer peripheral surface, and the clutch guide protrusion ( A first clutch (687) provided with a clutch guide groove (687b) into which 686) is inserted and having a first locking groove (687c) and a first locking protrusion (687d) at the end, and the second pulling interlocking sprocket (67) It is fixed to and is provided with a second clutch 688 having a second locking protrusion 688a corresponding to the first locking groove 687c and a second locking groove 688b corresponding to the first locking protrusion 687d. .

In the present invention made in this way, the clutch connection bracket 683 moves forward and backward by the clutch cylinder 682, and accordingly, the pushing guide 685 is hinged and connected to the hinge bracket 684 to which the clutch connection bracket 683 is connected. ) As the upper end of the hinge moves in the left and right directions, the pushing protrusion 685a moves forward and backward.

Additionally, as the pushing protrusion 685a moves forward and backward, the first clutch 687 moves forward toward the second clutch 688 or the first clutch 687 moves backward from the second clutch 688.

In this way, when the first clutch 687 is advanced toward the second clutch 688, the first locking protrusion 687d provided on the first clutch 687 is connected to the second locking groove 688b of the second clutch 688. It engages, and the second locking protrusion (688a) of the second clutch (688) is caught in the first locking groove (687c) of the first clutch (687), so that the rotational force of the clutch shaft (65) moves the second clutch (688). It is transmitted to the second pulling interlocking sprocket 67 through the drum sprocket 42 connected to the second pulling interlocking sprocket 67 and the second pulley interlocking chain 66, thereby rotating the winding drum 43.

Accordingly, as the pulling belt is wound around the rotating winding drum 43, the newly installed cable connected to the pulling belt is pulled along the longitudinal direction inside the pipe, thereby allowing the new cable to be installed.

At the bottom of the support body 10 of the present invention, when the pulling belt is pulled and wound toward the winding drum 43 of each of the first pulling body 40 and the second pulling body 40a, the longitudinal direction of the winding drum 43 A pulling belt guide portion 90 is provided to sequentially wind the pulling belt along.

As the pulling belt guide unit 90 is provided in this way, when the pulling belt is wound on the winding drum 43, the pulling belt is sequentially guided and wound along the longitudinal direction of the winding drum 43, so that the winding drum 43 The pulling belt is wound on one side, preventing the pulling belt from bunching up or interfering with the rotation of the winding drum (43).

The pulling belt guide portion 90 includes a pulling belt guide roller 91 horizontally positioned at the lower end of the support body 10 so as to be positioned corresponding to the winding drum 43, and a longitudinal direction of the pulling belt guide roller 91. A sliding guide (92) provided along, a pulling belt guide bracket (93) provided with a sliding groove (93a) fitted into the sliding guide (92) to slide in the left and right directions along the sliding guide (92), Push the first pulling belt support roller 94 and the second pulling belt support roller 95, which are provided on the pulling belt guide bracket 93 and between which the pulling belt is positioned, and the pulling belt guide bracket 93. By the pulling operation, the pulling belt guide bracket (93) slides in the left and right directions along the sliding guide (92), and the pulling belt is positioned between the first pulling belt support roller (94) and the second pulling belt support roller (95). It is provided with a pulling belt guide cylinder (96) that allows the belt to be sequentially wound along the longitudinal direction of the winding drum (43).

The present invention made in this way is repeatedly moved in the left and right directions of the pulling belt guide bracket 93 by the operation of the pulling belt guide cylinder 96, so that the first pulling belt support roller 94 and the second pulling belt support roller ( 95) Since the pulling belt that is inserted between the two is guided by repeatedly moving left and right along the longitudinal direction of the winding drum (43), it is possible to sequentially wind the pulling belt along the longitudinal direction of the winding drum (43).

The two-circuit underground power cable demolition and new installation construction method of the present invention is achieved by the two-circuit underground power cable removal and new installation pooling device of the present invention, and the same name and the same symbol are applied to the same configuration for explanation.

The two-circuit underground power cable demolition and new construction method of the present invention uses the two-circuit underground power cable demolition and cutting and pooling device (100) of the present invention, and the two-circuit underground power cable demolition and cutting and pooling device (100) is connected to the pipeline (3). ) Located at the top of the first manhole (1) connecting the interior, the two-circuit new cable drum (110), each of which is wound with a two-circuit new cable, is connected to the inside of the conduit (3) connected to the first manhole (1). After being located at the top of the second manhole (2), the two-circuit demolition cable (C1) previously installed inside the pipeline (3) is drawn out through the first manhole (1), and is placed at the top of the first manhole (1). The located 2-circuit underground power cable is pulled out with the roller guide body (20) of the demolition cutting and pulling device (100), and the drawn out demolition cable (C1) is cut to a certain length with the cutting body (30) to be placed inside the pipeline (3). A 2-circuit underground power cable demolition and cutting process (S1) in which the 2-circuit demolition cable (C1) previously installed is removed and cut, and a 2-circuit underground power cable demolition and cutting process (S1) through the second manhole (2). It is provided with a 2-circuit new cable pulling process (S2) to install the 2-circuit new cable (C2) pulled from the new cable drum (110) inside the conduit (3) from which the previously installed 2-circuit demolition cable (C1) was removed. do.

The present invention made as described above uses a single 2-circuit underground power cable demolition cutting and pulling device 100 to remove the 2-circuit demolition cable (C1) already installed inside the pipeline (3) and remove the 2-circuit demolition cable at the site. As (C1) can be cut immediately, the demolition workability and work convenience for the 2-circuit demolition cable (C1) as well as the transportability of the demolished 2-circuit demolition cable (C1) are greatly improved.

In addition, since a single 2-circuit underground power cable removal and cutting device (100) can be used to pull and install a new 2-circuit cable (C2) inside the conduit (3) from which the 2-circuit demolition cable (C1) has been removed, the existing 2-circuit cable (C2) can be installed. , there is no need to provide a winch and a tow machine to remove the 2-circuit demolition cable, as well as a pulling device to install a new 2-circuit cable in the pipeline where the 2-circuit demolition cable was removed, so the work costs associated with the removal and installation of a 2-circuit cable are reduced. Not only does it significantly reduce road traffic, it does not take up a lot of road space, so it does not significantly disrupt road traffic, and it can provide economic benefits through cost reduction.

The 2-circuit underground power cable demolition and cutting process (S1) of the present invention includes a 2-circuit demolition cable withdrawal step (S11), a roller guide spacing step (S12), a 2-circuit demolition cable roller positioning step (S13), and a drive connection sprocket fitting. It consists of a step (S14), a 2-line demolition cable removal step (S15), a 2-line demolition cable cutting step (S16), and a 2-line demolition cable repeated cutting step (S17).

In the 2-circuit demolition cable withdrawal step (S11), two pulling belts (B) are introduced into the first manhole (1) and connected to the ends of the 2-circuit demolition cable (C1) already installed inside the conduit (3). After that, the two-circuit removal cable (C1) is removed by winding the pulling belt (B) around the winding drum (41) provided on the first pulling body (40) and the second pulling body (40a), respectively. In the step of withdrawing to the first manhole (1), the first pulling body (40) and the second pulling body (40a) of the two-circuit underground power cable demolition cutting pulling device (100) located in the first manhole (1) are respectively The wound pulling belt (B) is pulled down to the inside of the first manhole (1) and firmly tied to the 2-circuit demolition cable (C1), and then the first pulling body (40) of the 2-circuit underground power cable demolition and cutting device (100) ) and the second pulling body (40a) to pull the two-circuit removal cable (C1) toward the first manhole (1) by pulling the pulling belt (B).

In the roller guide body spacing step (S12), the drive connection cylinder 21 of the roller guide body 20 is raised and lowered to raise and lower the drive control sprocket 22 and the raising and lowering cylinder 23 is raised and lowered to raise and lower the roller guide body 20. This is a step of widening the gap between the upper guide roller (24) and the lower guide roller (25) of (20). 2 tied to the pulling belt (B) toward the first manhole (1) by the pulling action of the pulling belt (B). After placing the circuit removal cable (C1), the upper guide roller (24) and the lower end of the roller guide body (20) are positioned so that the two-circuit removal cable (C1) is located between the upper guide roller (24) and the lower guide roller (25). Open the gap between the guide rollers (25).

The 2-circuit demolition cable roller positioning step (S13) is a step of withdrawing the 2-circuit demolition cable between the upper guide roller (24) and the lower guide roller (25) whose gap is widened by the roller guide body spacing step (S12). After mounting the 2-circuit demolition cable (C1) drawn out to the first manhole (1) side by (S11), lower the elevating cylinder (23) and place it between the upper guide roller (24) and the lower guide roller (25). As a step to ensure that the 2-circuit demolition cable (C1) is fixed, the 2-circuit demolition cable (C1) tied to the pulling belt (B) is separated from the pulling belt (B), and then the upper guide rollers ( 24) and the lower guide roller (25), place the 2-circuit removal cable (C1) between them, and then lower the lifted upper guide roller (24) toward the lower guide roller (25) to lower the upper guide roller (24) and the lower guide. Ensure that the 2-circuit removal cable (C1) is firmly attached to the roller (25).

In the drive connection sprocket matching step (S14), after the 2-circuit removal cable roller positioning step (S13), the upper guide roller 24 and the lower guide roller 25 into which the 2-circuit removal cable (C1) is inserted and fixed are simultaneously This is a step of lowering the driving connection cylinder (21) so that the driving connection sprocket (27) is engaged with the interlocking chain (26) wound around the upper guide roller (24) and lower guide roller (25). By lowering (24), the drive connection cylinder (21) is lowered while the two-circuit removal cable (C1) located between the upper guide roller (24) and the lower guide roller (25) is firmly adhered to the drive connection. The drive connection sprocket (27) provided at the bottom of the cylinder (21) is engaged with the interlocking chain (26) wound around the upper guide roller (24) and the lower guide roller (25) to maintain tension on the interlocking chain (26). Adjust it so that the upper guide roller (24) and lower guide roller (25) rotate simultaneously by the rotation of the interlocking chain (26).

In the two-circuit demolition cable removal step (S15), after the drive connection sprocket engagement step (S14), the upper guide roller 24 and the lower end are connected to the roller drive body 50 that transmits power to the roller guide body 20. Simultaneously driving the guide rollers (25) to remove the two-circuit removal cable (C1) from the inside of the pipeline (3) through the first manhole (1), the lower guide roller ( When 25) is rotated, the upper guide roller 24, which is wound by the interlocking chain 26 and connected to the lower guide roller 25, rotates simultaneously with the lower guide roller 25, and accordingly, the upper guide roller 24 The two-circuit removal cable (C1) located between and in close contact with the lower guide roller (25) is pulled and moved toward the cutting body (30), thereby removing the two-circuit removal cable (C1) from the inside of the conduit (3).

In the 2-circuit demolition cable cutting step (S16), the 2-circuit demolition cable (C1) to be removed by the 2-circuit demolition cable removal step (S15) is positioned on the cutting body (30), and the driven upper guide roller ( After stopping the driving of the 24) and the lower guide roller 25, place the 2-circuit removal cable (C1) on the cutting member 30 and drive the cutting drive cylinder 31 of the cutting member 30 to cut the cutting blade 32. ) is lowered to cut the two-circuit demolition cable (C1) to a certain length. At this time, the length of the two-circuit demolition cable (C1) cut by the cutting blade (32) is of course not limited, but can be transported and moved. For ease of use, it is recommended to cut it to 2m to 3m, and it is best to cut it to a length of 2.5m.

In addition, the two-line demolition cable cutting step (S16) is repeated by the two-line demolition cable repeated cutting step (S17) to repeatedly cut the two-line demolition cable (C1) drawn out from the first manhole (1), Bundle 15 to 20 disconnected two-circuit demolition cables (C1), load them on a transport vehicle using a crane, and then move them to be demolished.

In the present invention, before the 2-circuit demolition cable withdrawal step (S11), an oil leak prevention container is installed in the 2-circuit underground power cable removal cutting and pulling device (100) to prevent the oil contained in the 2-circuit demolition cable (C1) being drawn out from leaking out. An oil-proof tank positioning step (S111) is provided.

In this way, as the oil leak prevention container is located in the 2-circuit underground power cable demolition cutting and pulling device 100 in the oil tank positioning step (S111), the oil in the demolition cable (C1) drawn out from the first manhole (1) is It can prevent leakage and spread to the road surface.

In addition, in the present invention, before the 2-circuit demolition cable withdrawal step (S11), a transfer roller is installed along the longitudinal direction of the 2-circuit demolition cable (C1) already installed inside the pipeline (3) and the 2-circuit demolition cable (C1) is installed. A two-circuit removal cable roller seating step (S112) is provided to transfer and seat the installed transfer roller.

In this way, after installing the transfer roller first, the 2-circuit demolition cable (C1) to be removed is each seated on the transfer roller. When the 2-circuit demolition cable (C1) is pulled toward the first manhole (1), the 2-circuit demolition cable (C1) is pulled. Since the pulling operation is easily performed, the demolition workability of the 2-circuit demolition cable (C1) is greatly improved, and the 2-circuit demolition cable (C1) is pulled by the pulling body (40) or roller guide body (20). This is done easily.

In the 2-circuit new cable pulling process (S2) of the present invention, the previously installed 2-circuit demolition cable (C1) is removed using the 2-circuit underground power cable demolition cutting and pulling device (100), and then placed at the top of the second manhole (2). The winch positioning step (S21) of positioning the winch, and the winding drum (41) provided on the first pulling body (40) and the second pulling body (40a) of the two-line underground power cable demolition and cutting pulling device (100). Release the clutch (70) connected to and place the pulling belt (B) wound around the winding drum (41) at the top of the second manhole (2) by penetrating the inside of the pipeline (3) from which the two-circuit demolition cable (C1) was removed. A pulling belt pulling step (S22) in which the pulling belt (B) is connected to the winch and pulled to the second manhole (2), and a rotating bracket (80) is attached to the pulling belt (B) pulled to the second manhole (2). A rotation bracket connection step (S23) to prevent twisting of the pulling belt (B) and the new 2-circuit cable (C2) by connecting the clutch 70 connected to the winding drum 41 with the winding drum 41. Then, the winding drum connected to the clutch 70 is driven by driving the first pulling drive body 60 and the second pulling drive body 60a, which transmit power to the first pulling body 40 and the second pulling body 40a, respectively. (41) is rotated so that the pulling belt (B) is pulled toward the winding drum (41) and the 2-circuit new cable (C2) is pulled toward the 1st manhole (1) by the winding motion and the 2-circuit new cable (C2) is pulled. When the 2-circuit new cable pulling step (S24) automatically records the installation tension and the 2-circuit new cable pulling step (S24) is pulled toward the first manhole (1), the first pulling operation is performed. A two-circuit new cable construction step (S25) is provided in which the driving of the sieve 60 and the second pulling actuator (60a) is stopped and a new two-circuit cable (C2) is installed inside the conduit (3).

The present invention, made in this way, removes and cuts the previously installed 2-circuit demolition cable (C1) with a single 2-circuit underground power cable demolition cutting and pulling device (100), and then re-installs the new 2-circuit cable (C2) into the 2-circuit demolition cable. As (C1) can be pulled and installed inside the demolished pipeline (3), the demolition workability and work convenience for the 2-circuit demolition cable (C1) as well as the transportability of the demolished 2-circuit demolition cable (C1) are greatly improved. This can be done by using the 2-circuit underground power cable removal and cutting device (100) as is, so that the 2-circuit new cable (C2) can be pulled and installed inside the conduit (3) from which the 2-circuit demolition cable (C1) was removed. There is no need for a demolition device to remove a 2-circuit cable or a pulling device to install a new 2-circuit cable, as well as a cutting device to cut the removed 2-circuit cable, so the work costs due to the removal of the 2-circuit cable and the construction of a new 2-circuit cable are eliminated. Not only does it significantly reduce road traffic, it does not take up a lot of road space, so it does not significantly disrupt road traffic, and it can provide economic benefits through cost reduction.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. Various modifications and variations can be made from this description by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all claims that are equivalent or equivalent to the claims as well as the following claims fall within the scope of the present invention.

10: support 11: vertical frame
12: horizontal frame 20: roller guide body
21: roller guide frame 22: cable vertical guide
23: Cable horizontal guide 24: Bottom roller guide
24a: lower guide roller 25: upper roller guide
25a: Top guide roller 26: Vertical sliding rod
27: Elevating and lowering stand 28: Elevating and lowering cylinder rod
29: Elevating and lowering cylinder 30: Cutting body
31: Cutting body frame 31a: Cutting blade guide groove
32: Cable guide guide 33: Cable guide roller
34: Cutting drive cylinder 34a: Raising and lowering cutting cylinder rod
35: upper cutting blade 36: lower cutting blade support
37: Cutting cable guide roller
40: first pulling body 40a: second pulling body
41: winding drum shaft 42: drum sprocket
43: winding drum 50: roller driving body
51: Drive cutting sprocket 52: Drive cutting motor part
52a: Drive transmission chain 53: First interlocking sprocket
54: 2nd interlocking sprocket 55: 3rd interlocking sprocket
56: 4th interlocking sprocket 57: interlocking chain
58: rotation drive gear 59: rotation interlocking gear
60: first pulling actuator 60a: second pulling actuator
61: Pulling drive motor part
62: Pulling driving sprocket 63: First pulling interlocking chain
64: 1st pulling interlocking sprocket 65: Clutch shaft
66: 2nd pulling interlocking chain 67: 2nd pulling interlocking sprocket
68: Clutch part 70: Drive connection part
71: Cylinder fixer 72: Drive connection cylinder rod
73: Drive connection cylinder 74: Guide groove
75: Drive connection guide 76: Connection sprocket guide
77: Connection sprocket axis 78: Drive connection sprocket
81: Cylinder through hole 82: Guide roller cylinder
83: Cylinder bracket 84: Roller cylinder rod
85: Cable guide roller 86: Guide roller bracket
90: Pulling belt guide part 91: Pulling belt guide roller
92: Sliding guide 93: Pulling belt guide bracket
93a: Sliding groove 94: First pulling belt support roller
95: Second pulling belt support roller 96: Pulling belt guide cylinder
681: Support lower frame 682: Clutch cylinder
682a: Clutch cylinder bracket 683: Clutch connection bracket
684: Hinge bracket 685: Pushing guide
685a: Pushing projection 686: Clutch guide projection
687: 1st clutch 687a: Pushing guide groove
687b: Clutch guide groove 687c: First locking groove
687d: first locking protrusion 688: second clutch
688a: second locking protrusion 688b: second locking groove
S1: 2-line underground power cable demolition and cutting process
S2: 2-line new cable pulling process
S11: 2-line demolition cable withdrawal step S12: Roller guide body spacing step
S13: 2-circuit removal cable roller positioning step S14: Drive connection sprocket matching step
S15: 2-line demolition cable removal step S16: 2-line demolition cable cutting step
S17: 2-line demolition cable repeated cutting step
S111: Oil-proof tank positioning step S112: 2-circuit removal cable roller seating step
S21: Winch position step S22: Pulling belt (B) pulling step
S23: Rotation bracket connection step S24: 2-line new cable pulling step
S25: 2nd line new cable construction stage

Claims (10)

A support body (10) provided with a plurality of vertical frames (11) and a plurality of horizontal frames (12) connecting the plurality of vertical frames (11), respectively; A roller guide body (20) provided on one upper side of the support body (10) to guide the cable (C) drawn out from the inside of the pipe. A cutting body 30 is provided on the other upper side of the support body 10 to face the roller guide body 20 and cuts the cable C guided through the roller guide body 20 to a predetermined length; A first pulling body 40 provided at the lower end of the support body 10 and having a winding drum for pulling and winding the pulling belt connected to the cable C when installing a new cable C inside the pipe; A roller drive body (50) that transmits power to the roller guide body (20); In the removal and cutting pulling device (100) for a two-circuit underground power cable consisting of a first pulling driving body (60) that transmits power to the first pulling body (40),
The roller guide body 20,
A roller guide frame (21) whose lower end is fixed to one upper side of the support body (10);
Cable vertical guides (22) provided on both sides of the front of the roller guide frame (21) to guide the side of the cable (C) entering the roller guide frame (21);
a cable horizontal guide (23) provided at the lower end of the cable vertical guide (22) to guide the lower surface of the cable (C) entering the roller guide frame (21);
a lower roller guide (24) located at the inner lower side of the roller guide frame (21) and having a plurality of lower guide rollers (24a) arranged horizontally;
an upper roller guide (25) located at the inner upper side of the roller guide frame (21) and having a plurality of upper guide rollers (25a) corresponding to the plurality of lower guide rollers (24a) arranged horizontally;
A plurality of vertical sliding rods (26) connected to the upper roller guide (25);
an elevating platform (27) to which the upper ends of the plurality of vertical sliding rods (26) are respectively connected;
It is fixed to the upper surface of the elevating platform (27) and the elevating cylinder rod (28) is connected to the upper roller guide (25), so that the upper roller guide (25) is moved by the withdrawal and retraction operation of the elevating cylinder rod (28). It is provided with a raising and lowering cylinder (29) that lowers toward the lower roller guide (24) or allows the upper roller guide (25) to be raised and lowered from the lower roller guide (24),
On one side of the first pulling body 40, a second pulling body 40a is provided at the lower end of the support 10, and a second pulling driving body transmits power to the second pulling body 40a. (60a) A demolition cutting and pulling device for a two-circuit underground power cable, characterized in that it is provided. According to paragraph 1,
The roller drive body 50 is,
a drive transmission sprocket (51) installed on one side of one of the plurality of upper guide rollers (25a);
a drive transmission motor unit 52 connected to a drive transmission sprocket 51 installed on one side of one of the plurality of upper guide rollers 25a and a drive transmission chain 52a;
A first interlocking sprocket 53 and a second interlocking sprocket 54 each protrude from one side of the upper roller guide 25a and are respectively installed on upper guide rollers located on both sides of the plurality of upper guide rollers 25a. class;
a third interlocking sprocket (55) and a fourth interlocking sprocket (56) each protruding from one side of the lower roller guide (24);
an interlocking chain (57) that rotates in an infinite orbit by connecting the first interlocking sprocket (53), the second interlocking sprocket (54), the third interlocking sprocket (55), and the fourth interlocking sprocket (56);
a plurality of rotation drive gears (58) each protruding from one side of the lower roller guide (24) and installed on a plurality of lower guide rollers (24a) transverse to the lower roller guide (24);
It is located between the plurality of rotary drive gears 58, meshes with the plurality of rotary drive gears 58, and is axed with the third interlocking sprocket 55 and the fourth interlocking sprocket 56, respectively, to form a third interlocking sprocket ( 55) and a plurality of rotation interlocking gears (59) rotated by the rotation of the fourth interlocking sprocket (56);
When the upper roller guide (25) is lowered toward the lower roller guide (24) by the pulling operation of the lowering cylinder rod (28) of the lowering cylinder (29) connected to the lowering platform (27), the interlocking chain (57) ) side and is separated from the interlocking chain (57) when the upper roller guide (25) is lifted and lowered from the lower roller guide (24) by the retracting operation of the raising and lowering cylinder rod (28) of the raising and lowering cylinder (29). It is provided with a driving connection part 70,
The driving connection part 70 is,
A cylinder fixture (71) connected to the elevating platform (27);
a drive connection cylinder (73) fixed to the upper end of the cylinder fixture (71) and through which a drive connection cylinder rod (72) penetrates the lower side;
a drive connection guide (75) extending vertically downward from the lower surface of the cylinder fixture (71) and having a guide groove (74) on its inner surface along the vertical longitudinal direction;
One side is in close contact with the driving connection guide 75, and the driving connection cylinder rod 72 is connected to the upper surface, so that the vertical longitudinal direction of the driving connection guide 75 is moved by the withdrawal and retraction operation of the driving connection cylinder rod 72. A connection sprocket guide (76) that goes up and down along;
A connection sprocket shaft (77) extending transversely inside the connection sprocket guide (76) and one side of which is inserted into the guide groove (74) of the driving connection guide (75);
The connection sprocket guide 76, which is installed on the connection sprocket shaft 77, is raised and lowered from the interlocking chain 57 and separated from the interlocking chain 57, or lowered toward the interlocking chain 57 to form an interlocking chain. A demolition cutting and pulling device for a two-line underground power cable, characterized in that it is connected to (57) and is provided with a driving connection sprocket (78) that presses the interlocking chain (57) to tighten the tension of the interlocking chain (57). According to paragraph 1,
The cutting body 30 is,
A cutting body frame 31 having a lower end fixed to the other upper side of the support 10 and having cutting blade guide grooves 31a facing each other at both inner ends;
A cable guide guide (32) extending from the cutting body frame (31) and extending downward toward the roller guide body frame (21);
A cable guide roller (33) that runs across the cutting body frame (31) and is located on the upper side of the cable guide guide (32) to guide the upper surface of the cable (C) guided toward the cutting body frame (31);
A cutting drive cylinder (34) fixed to the upper surface of the cutting body frame (31) and having a lifting and lowering cutting cylinder rod (34a);
an upper cutting blade (35) whose both ends are respectively inserted into the cutting blade guide groove (31a) and the upper cutting cylinder rod (34a) is connected to the upper surface;
a lower cutting blade support 36 that extends laterally inside the cutting body frame 31 and is located on the lower side of the upper cutting blade 35;
The cable (C) is laid transversely to the cutting body frame 31 so as to be located outside the lower cutting blade support 36, and is located between the upper cutting blade 35 and the lower cutting blade support 36. The upper cutting blade ( 35) is cut horizontally on the same line as the upper end of the lower cutting blade support 36 so that bending of the cable (C) is prevented when the cable (C) is cut by the lowering operation and the cable (C) is easily cut. Equipped with a cable guide roller (37),
A cylinder bracket (83) fixed to the cutting body frame (31), provided with a cylinder through hole (81), and to which the guide roller cylinder (82) is fixed;
A roller cylinder rod (84) that is lifted and lowered from the guide roller cylinder (82) fixed to the cylinder bracket (83) and penetrates the cylinder through hole (81);
A guide roller bracket whose upper end is connected to the roller cylinder rod (84) and a cable guide roller (85) is horizontal at the lower end to raise and lower the cable guide roller (85) by the raising and lowering movement of the roller cylinder rod (84). (86) A demolition cutting and pulling device for a two-circuit underground power cable, characterized in that it is provided. According to paragraph 1,
The first pulling body 40 and the second pulling body 40 are each,
a winding drum shaft 41 protruding from the lower end of the support 10;
It is provided with a winding drum (43) installed on the winding drum shaft (41) and equipped with a drum sprocket (42) on one side,
The first pulling actuator 60 and the second pulling actuator 60a each,
A pulling drive motor unit 61 provided on the lower side of the support 10;
a pulling drive sprocket (62) installed on the inner surface of the lower end of the support (10) and whose power is transmitted by the pulling drive motor unit (61);
A first pulling interlocking sprocket 64 is installed on the inner surface of one lower side of the support body 10, is located in correspondence with the pulling driving sprocket 62, and is connected to the pulling driving sprocket 62 by a first pulling interlocking chain 63. )class;
A clutch shaft 65 on one side connected to the first pulling interlocking sprocket 64;
A clutch unit 68 having a second pulling interlocking sprocket 67 installed on the other side of the clutch shaft 65 and connected to the drum sprocket 42 of the winding drum 43 and a second pulling interlocking chain 66. It is provided with,
The clutch unit 68 is,
a support lower frame 681 crossing the lower end of the support 10;
a clutch cylinder (682) horizontally fixed to one side of the support lower frame (681) by a clutch cylinder bracket (682a);
a clutch connection bracket (683) that is horizontally pulled in and out with respect to the clutch cylinder (682);
A hinge bracket 684 vertically connected to the other side of the support lower frame 681;
a pushing guide (685) whose lower end is connected to the clutch connection bracket (683) and hinged to the hinge bracket (684) and has a pushing protrusion (685a);
a clutch guide protrusion 686 protruding from the other outer surface of the clutch shaft 65;
A pushing guide groove (687a) is installed on the other outer surface of the clutch shaft (65) and into which the pushing protrusion (685a) of the pushing guide (685) is inserted, and is provided along the outer peripheral surface of the clutch into which the clutch guide protrusion (686) is inserted. A first clutch (687) provided with a guide groove (687b) and having a first locking groove (687c) and a first locking protrusion (687d) at the end;
It is fixed to the second pulling interlocking sprocket 67 and has a second locking protrusion (688a) corresponding to the first locking groove (687c) and a second locking groove (688b) corresponding to the first locking protrusion (687d). A demolition cutting and pulling device for a two-circuit underground power cable, characterized in that it is provided with a second clutch (688). According to paragraph 1,
At the bottom of the support body 10, when the pulling belt is pulled and wound toward the winding drum 43 of the first pulling body 40 and the second pulling body 40a, there is a pulling belt along the longitudinal direction of the winding drum 43. A pulling belt guide portion 90 is provided to sequentially wind the
The pulling belt guide part 90,
a pulling belt guide roller (91) protruding from the lower end of the support body (10) so as to be positioned in correspondence with the winding drum (43);
a sliding guide (92) provided along the longitudinal direction of the pulling belt guide roller (91);
a pulling belt guide bracket (93) provided with a sliding groove (93a) fitted into the sliding guide (92) to slide in the left and right directions along the sliding guide (92);
A first pulling belt support roller 94 and a second pulling belt support roller 95 provided on the pulling belt guide bracket 93 and between which the pulling belt is positioned;
By pushing and pulling the pulling belt guide bracket (93), the pulling belt guide bracket (93) slides in the left and right directions along the sliding guide (92) and moves the first pulling belt support roller (94) and the second pulling belt. Removal and cutting of a two-circuit underground power cable, characterized in that it is provided with a pulling belt guide cylinder (96) that allows the pulling belt located between the belt support rollers (95) to be sequentially wound along the longitudinal direction of the winding drum (43). Pulling device. Using the 2-circuit underground power cable demolition cutting and pulling device (100) of Paragraph 1,
Located at the top of the first manhole (1) connecting the two-line underground power cable removal cutting and pulling device (100) to the inside of the pipeline (3), the two-line new cable drum (110) on which the two-line new cable is wound is located. After being located at the top of the second manhole connected to the inside of the pipe (3) connected to the first manhole (1),
The two-line demolition cable (C1) already installed inside the pipe (3) is pulled out through the first manhole (1), and the two-line underground power cable demolition cutting and pulling device located at the top of the first manhole (1) ( 100) are each pulled out with the roller guide body 20, and the drawn out 2-circuit demolition cable (C1) is cut to a certain length with the cutting member 30, so that the 2-circuit demolition cable (C1) previously installed inside the conduit (3) is pulled out. A 2-circuit underground power cable demolition and cutting process (S1) in which C1) is demolished and cut;
The new 2-circuit cable drum (110) is installed inside the pipeline (3) from which the 2-circuit demolition cable (C1) previously installed by the 2-circuit underground power cable demolition and cutting process (S1) is removed through the second manhole (2). A two-circuit underground power cable demolition and new construction method using a two-circuit underground power cable demolition cutting and pulling device, characterized in that it is provided with a two-circuit new cable pulling process (S2) for installing a two-circuit new cable (C2) pulled from . According to clause 6,
The 2-circuit underground power cable demolition and cutting process (S1),
After simultaneously inserting two pulling belts (B) into the first manhole (1) and connecting them to the ends of the two-circuit removal cable (C1) already installed inside the pipeline (3), the first pulling body (40) and Two-circuit demolition in which the two-circuit demolition cable (C1) is pulled out toward the first manhole (1) by winding the pulling belt (B) around the winding drum (41) provided on each of the second pulling bodies (40a). Cable withdrawal step (S11);
The drive connection cylinder 21 of the roller guide body 20 is raised and lowered to raise and lower the drive control sprocket 22, and the raising and lowering cylinder 23 is raised and lowered to move the upper guide roller 24 and the lower end of the roller guide body 20. A roller guide body spacing step (S12) for widening the spacing between the guide rollers (25);
The two-circuit removal cable is pulled out toward the first manhole (1) between the upper guide roller (24) and the lower guide roller (25), which are spaced apart by the roller guide body spacing step (S12), by the two-circuit removal cable withdrawal step (S11). After mounting the 2-circuit demolition cable (C1), the lifting cylinder (23) is lowered so that the 2-circuit demolition cable (C1) is fixed between the upper guide roller (24) and the lower guide roller (25). Demolition cable roller positioning step (S13);
After the 2-circuit demolition cable roller positioning step (S13), the driving connection cylinder 21 is lowered so that the upper guide roller 24 and the lower guide roller 25, into which the 2-circuit demolition cable C1 is inserted and fixed, are driven simultaneously. A drive connection sprocket engagement step (S14) in which the drive connection sprocket 27 is engaged with the interlocking chain 26 wound around the upper guide roller 24 and the lower guide roller 25;
After the drive connection sprocket engagement step (S14), the upper guide roller 24 and the lower guide roller 25 are simultaneously driven by the roller drive body 50, which transmits power to the roller guide body 20, to remove the two-circuit cable. A two-line demolition cable removal step (S15) in which (C1) is removed from the inside of the pipeline (3) through the first manhole (1);
The 2-circuit demolition cable (C1) to be demolished by the 2-circuit demolition cable removal step (S15) is positioned on the cutting body (30), and the driven upper guide roller (24) and lower guide roller (25) are driven. After stopping, place the 2-circuit removal cable (C1) on the cutting body (30) and drive the cutting drive cylinder (31) of the cutting body (30) to lower the cutting blade (32) to remove the 2-circuit removal cable (C1). A two-circuit demolition cable cutting step (S16) of cutting to a certain length;
Characterized in that the two-line demolition cable repeated cutting step (S17) is repeated to repeatedly cut the two-line demolition cable (C1) drawn out from the first manhole (1) by repeating the two-line demolition cable cutting step (S16). Construction method for demolition and new installation of a 2-circuit underground power cable using a cutting and pulling device. In clause 7,
Before the 2-line demolition cable withdrawal step (S11), the oil leak prevention container is placed in the 2-line underground power cable removal cutting and pulling device (100) to prevent the oil contained in the 2-line demolition cable (C1) being drawn out from leaking out. A construction method for demolition and new construction of a two-circuit underground power cable using a cutting and pulling device for demolition and cutting of a two-circuit underground power cable, characterized in that the oil tank positioning step (S111) is provided. In clause 7,
Before the 2-circuit demolition cable withdrawal step (S11), a transfer roller is installed along the longitudinal direction of the 2-circuit removal cable (C1) already installed inside the pipeline (3), and the 2-circuit removal cable (C1) is transferred to the installed transfer roller. A construction method for demolition and new construction of a two-circuit underground power cable using a removal cutting and pulling device for a two-circuit underground power cable, characterized in that it is provided with a two-circuit demolition cable roller seating step (S112) for seating. According to clause 6,
The 2-line new cable pulling process (S2) is,
After removing the previously installed two-circuit demolition cable (C1) using the demolition cutting and pulling device (100), a winch positioning step (S21) in which the winch is located at the top of the second manhole (2);
The clutches 70 connected to the winding drums 41 provided on the first pulling body 40 and the second pulling body 40a of the two-line underground power cable demolition cutting pulling device 100 are released, respectively, and the winding drums ( 41), connect the pulling belts (B) wrapped around each of them to the winch located at the top of the second manhole (2) by penetrating the inside of the pipe (3) from which the 2-circuit demolition cable (C1) was removed, and pull each pulling belt with a circle. A pulling belt pulling step (S22) that pulls (B) to the second manhole (2);
A rotating metal fitting step (S23) of connecting the rotating metal fitting (80) to the pulling belt (B) pulled to the second manhole (2) to prevent twisting of the pulling belt (B) and the new 2-circuit cable (C2);
A first pulling drive body 60 that connects the clutch 70 connected to the winding drum 41 with the winding drum 41 and then transmits power to the first pulling body 40 and the second pulling body 40a, respectively. And by driving the second pulling drive body (60a) to rotate the winding drum (41) connected to the clutch (70), the pulling belt (B) is pulled toward the winding drum (41) and wound, thereby forming a two-circuit new cable ( A two-line new cable pulling step (S24) of pulling C2) toward the first manhole (1) and automatically recording the laying tension of the two-line new cable (C2);
When the 2-circuit new cable (C2) is pulled toward the first manhole (1) by the 2-circuit new cable pulling step (S24), the driving of the pulling actuator 60 is stopped and the 2-circuit new cable (C2) is connected to the conduit ( 3) A construction method for removing and installing a new two-circuit underground power cable using a cutting and pulling device for removing and cutting a two-circuit underground power cable, which is provided in the construction step (S25) of a new two-circuit cable being installed inside.