Top-down fastening-type wire clamp for bypass cable head for enabling indirect hotline safety operation and indirect hotline elastic connection method using same

Abstract

The present invention relates to a top-down fastening-type wire clamp for a bypass cable head used for a bypass cable standing connection device for installing a bypass cable during an uninterrupted operation for replacing and relocating distribution lines along different paths. More specifically, disclosed is a technical field regarding a top-down fastening-type wire clamp for a bypass jumper cable head and an indirect hotline elastic connection method using same, wherein, when a wire clamp for a bypass jumper cable head is installed on a power cable, the top-down fastening hook of the top-down fastening-type wire clamp for a bypass cable head is hinge-coupled to the upper portion of a clamp body such that the power line is rotated from top to bottom and then retained (top-down fastening type), instead of being rotated from bottom to top and then retained. A release direction overload prevention clutch-type tightening device is connected to the rear side of the top-down fastening hook such that the top-down fastening hook retains the power line which is rotated from top to bottom, contrary to the conventional approach. Accordingly, in the process of retaining the power line, the top-down fastening-type wire clamp for a bypass cable head is elastically connected to the conductor of the power line and thus is prevented from detaching from the power line and falling, thereby causing safety hazards. This enables an indirect hotline safety operation.

Description

Top-down fastening type wire clamp for bypass cable head enabling indirect live line safety work and indirect live line elastic connection method using the same

[0001] The present invention relates to a top-down fastening type wire clamp for a bypass cable head used in a bypass cable upright connection device for installing a bypass cable during uninterruptible power construction for replacing and relocating distribution lines and changing a route, and more specifically, when installing the wire clamp for the bypass cable head on a power line, the top-down fastening hook of the top-down fastening type wire clamp for the bypass cable head is hinge-connected to the upper part of the clamp body so that the power line is fixed by rotating from the upper part in a downward direction rather than by rotating from the lower part in an upward direction, and a clutch-type tightening device for preventing overload in the direction of loosening is connected to the rear of the top-down fastening hook so that the top-down fastening hook is fixed by rotating from the upper part in a downward direction unlike in the past, thereby preventing the power line from being fixed by the top-down fastening type wire clamp for the bypass cable head having elasticity in connection with the conductor of the power line during the process of fixing the power line, thereby preventing the power line from being detached from the power line and falling and the resulting safety accident, thereby enabling indirect live line safety work, a bypass jumper cable. The present invention relates to a top-down fastening type wire clamp for a head and an indirect live wire elastic connection method using the same.

[0002] In modern society, the demand for electricity is rapidly increasing, and the level of demand for power quality is gradually increasing accordingly.

[0003] Accordingly, in order to reduce power outages and supply high-quality electricity during construction for the installation and maintenance of distribution lines, uninterruptible power distribution methods are mainly adopted to carry out work without power being cut off during the work.

[0004] These conventional uninterruptible power distribution methods for extra-high voltage distribution lines use uninterruptible temporary power transmission methods that utilize live-line bypass cables, construction switches, uninterruptible transformer trains, and bypass cables. However, as the risks of the direct live-line method have recently come to the fore, the client, Korea Electric Power Corporation, has decided to abolish the direct live-line method and introduce an uninterruptible power distribution method using the indirect live-line method starting in 2017. However, the application is being rushed while tool and method development is still insufficient, accounting for only about 20% of the entire process. As a result of the confusion caused by the combined use of the indirect and direct live-line methods, not only is there a risk of safety accidents in live-line electrical work due to the labor intensity and physical limitations, work efficiency is reduced, and it is impossible to use it on site. This difficult reality is being reported daily in the media, including newspapers in the electric power field.

[0005] At this time, unlike the previous direct live-line method, where live-line electricians wear protective gear and work while directly touching the live high-voltage power line, the indirect live-line method is a live-line method that uses an insulating stick for live lines about 1.5 to 2 meters long to secure a safe distance and performs indirect work using the insulating stick without directly touching the live high-voltage power line.

[0006] Meanwhile, in order to implement the uninterruptible power distribution method, live line bypass cables, construction switches, uninterruptible transformers, bypass cables, etc. are utilized. This method requires installing bypass cable clamps on extra-high voltage power lines with direct or indirect live lines, and involves separation and compression of jumper wires.

[0007] That is, referring to FIGS. 1a and 1b, the conventional uninterruptible power distribution method necessarily involves a cable clamp (3) installation process. First, a temporary cable hanger (2) is installed on an extra-high voltage power line (6) using a live line work stick (5), and the bypass cable (7) temporarily laid on the supporting crepe (4) is temporarily fixed to the temporary cable hanger (2) using the live line work stick (5). Then, the covering of the extra-high voltage power line (6) is removed using a live line work stripper. Then, the cable clamp (3) temporarily fixed to the temporary cable hanger (2) is hung on the extra-high voltage power line (6) from which the covering has been removed using the live line work stick (5), and a cable rotation device is inserted into the cable clamp (3), and then a connection process is performed using an indirect live line rotation function stick. However, the above-mentioned indirect live-line uninterruptible power distribution method is very complicated and cumbersome to perform, and it uses a live-line work stick about 1.5 to 2 m long. The weight of the wire separation cutter, live-line compressor (about 4.5 kg), and cable clamp (about 5 to 20 kg) is loaded onto the end of the live-line work stick, making it impossible for the worker to support the live-line work stick with his or her physical strength. Therefore, mistakes such as dropping the cable clamps during work are frequent, and as a result, the labor intensity of the live-line electrician increases to the maximum. In addition to concerns about musculoskeletal disorders due to physical limitations, there is also a risk of safety accidents and line failures due to the omission of protection. For these reasons, the industry related to live-line electrician and applied technology fields is concerned about the implementation of the existing indirect live-line uninterruptible power distribution method.

[0008] Meanwhile, in the conventional indirect live-line uninterruptible power distribution method as described above, when the cable clamp is hung on the extra-high voltage power line, in order to prevent the cable clamp from coming off the extra-high voltage power line, a fixing hook or fixing lever is installed on the cable clamp to wrap around and fix the open lower part of the receiving groove so that the extra-high voltage power line can be fixed to the extra-high voltage power line after the extra-high voltage power line is received in the receiving groove formed on the front, that is, after the cable clamp is hung on the extra-high voltage power line.

[0009] However, the above-mentioned fixing hook or fixing lever is typically hinged to the cable clamp to wrap and fix the open lower part of the receiving groove, and when rotated upward, it closes the open lower part of the receiving groove, that is, it fixes the extra-high voltage power line. In the case of performing work in the above-mentioned manner, since the worker uses a live line work stick at the lower part of the cable clamp, there is a problem that the cable clamp may be lifted and detached from the extra-high voltage power line before the open lower part of the receiving groove is closed, resulting in a fall and a safety accident.

[0010] The present invention is a technology devised to solve the problems of the above-described prior art, and the cable clamp used in the conventional bypass cable connection device has a problem that when the cable clamp is hung on the extra-high voltage power line and the receiving groove is closed, the cable clamp is lifted from the extra-high voltage power line and thus detached, causing a falling accident and thereby causing a safety accident. Therefore, the main purpose of the present invention is to provide a top-down fastening hook for a bypass jumper cable head, which is hinge-connected to the upper part of the clamp body of the bypass cable head wire clamp, and a clutch-type tightening device for preventing overload in the loosening direction is connected to the rear of the top-down fastening hook so that the top-down fastening hook rotates from the upper side to the lower side, unlike the prior art, to fix the power line, thereby preventing the top-down fastening type wire clamp for the bypass cable head from detaching from the power line and falling and thereby causing a safety accident, by having elastic connection to the conductor of the power line during the process of fixing the power line, thereby enabling indirect live line safety work, and a method for indirect live line elastic connection using the same. there is.

[0011] The present invention proposes a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a clamp body (100) having a pair of fixed hooks (110) formed with a receiving groove (112) capable of receiving a power line (W) at the upper portion thereof; and a top-down fastening hook (200) which is hinge-joined between the pair of fixed hooks (110) to grip a power line (W) received in the receiving groove (112) when rotated downward and to release the grip of the power line (W) received in the receiving groove (112) when rotated upward.

[0012] In addition, the top-down fastening hook (200) of the present invention is characterized in that it includes a grip projection (210) that is formed to protrude and extend from the front end, but is formed to protrude so as to have a width smaller than the gap between the pair of fixing hooks (110).

[0013] In addition, the clamp body (100) of the present invention is characterized in that it is formed on the lower front side and includes a grip groove (120) formed to correspond to the grip projection (210) and into which the grip projection (210) is inserted and removed.

[0014] In addition, the top-down fastening hook (200) of the present invention is characterized by including a link coupling part (220) formed at the top; and a rotation link (230) whose lower part is hinge-joined to the link coupling part (220) but is elastically supported at the rear, and whose upper part is connected to one end of an insulating lifting belt (10).

[0015] In addition, the top-down fastening hook (200) of the present invention is characterized in that it includes a torsion spring (240) that is fixed on one side to the inner front upper portion of the link coupling portion (220) and on the other side to the rear of the rotary link (230) to elastically support the rotary link (230) rearward.

[0016] In addition, the rotary link (230) of the present invention is characterized by including a link housing (232) whose lower part is hinge-joined to the link coupling part (220) and whose upper part has a coupling groove (232a) formed therein; a fixing screw (234) whose lower part is coupled to the lower surface of the coupling groove (232a); a detachable member (236) installed on the outer periphery of the fixing screw (234) so ​​as to be positioned between the fixing screw (234) and the link housing (232); and a detachable spring (238) installed on the outer periphery of the fixing screw (234), but whose lower part is supported by the lower surface of the coupling groove (232a) so as to elastically support the detachable member (236) in an upward direction.

[0017] In addition, the present invention is characterized by comprising a clutch-type tightening device (300) for preventing overload in the loosening direction, which comprises a housing (310) hingedly coupled between a pair of fixed hooks (110) and positioned at the rear of the top-down fastening hook (200), an operating body (320) whose lower part is coupled to the upper inner side of the housing (310) so as to be movable in the up-and-down direction and whose upper part is hingedly coupled to the rear of the top-down fastening hook (200), and a lower rotating body (330) coupled to the lower part of the upper housing (310) and moving the operating body (320) in the up-and-down direction.

[0018] In addition, the present invention is characterized by comprising a bypass cable connection part (400) that is rotatably connected to the lower part of the clamp body (100); and a bypass cable (500) that is rotatably connected to the lower part of the bypass cable connection part (400).

[0019] As presented above, the top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to the present invention is different from the conventional one in that the top-down fastening hook is rotated in a top-down direction, that is, from the top to the bottom, so that the power line is fixed to the receiving groove of the top-down fastening type wire clamp for a bypass cable head, so that in the process of fixing the power line, the top-down fastening type wire clamp for a bypass cable head has elasticity in connection with the conductor of the power line, thereby preventing the occurrence of a safety accident due to separation from the power line and falling.

[0020] In addition, since the top-down fastening hook of the present invention rotates from the top to the bottom to fasten the power line to the receiving groove, the worker can work while pulling the clutch-type tightening device for preventing loosening direction overload in the downward direction using a live line work stick, so that when the wire clamp for the bypass jumper cable head is firmly hooked to the power line and the top-down fastening hook rotates, the top-down fastening type wire clamp for the bypass cable head has elasticity for connecting to the conductor of the power line, thereby preventing the wire clamp from being separated from the power line.

[0021] Figures 1a and 1b are drawings showing a conventional temporary cable connection clamp.

[0022] Fig. 2 is a perspective view showing a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to a preferred embodiment of the present invention.

[0023] FIG. 3 is a perspective view showing the operation of the top-down fastening hook of a top-down fastening type wire clamp for a bypass cable head capable of indirect live-line safety work according to a preferred embodiment of the present invention.

[0024] Figure 4 is an exploded side view showing a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to a preferred embodiment of the present invention.

[0025] FIG. 5 is a partial projection side view showing a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to a preferred embodiment of the present invention.

[0026] FIG. 6 is a partial projection side view showing the top-down fastening hook of a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to a preferred embodiment of the present invention, operated according to the diameter of a power line.

[0027] Fig. 7 is a side view showing a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to a preferred embodiment of the present invention, connected to a temporary hanger.

[0028] Figure 8 is an enlarged view of portion “A” of Figure 7.

[0029] Fig. 9 is a drawing showing a bypass cable installation process according to a preferred embodiment of the present invention.

[0030] Figure 10 is a process diagram showing an indirect live wire elastic connection method according to a preferred embodiment of the present invention.

[0031] Fig. 11 is a partial side view showing a state in which a clamp is raised during a conventional bypass cable installation process.

[0032] Fig. 12 is a partial side view showing a state in which a top-down fastening type wire clamp for a bypass cable head capable of indirect live-line safety work according to a preferred embodiment of the present invention is raised.

[0033] Figure 13 is a state diagram showing a three-phase transformer pole with a variable input device installed and an uninterruptible power transformer device.

[0034] *Detailed explanation of the main symbols in the drawing*

[0035] W: Power line 10: Insulating belt

[0036] 30: Aeja 40: COS

[0037] 41: COS reduction line 50: Transformer

[0038] 60: Uninterruptible power transformer device

[0039] 100: Clamp body

[0040] 110: Fixed hook 112: Receiving groove

[0041] 120: Phage home 130: Lower joint

[0042] 200: Top-down fastening hook

[0043] 210: Phage protrusion 220: Link joint

[0044] 230: Rotating link 232: Link housing

[0045] 232a: Joint groove 234: Fixing screw

[0046] 236: Detachable member 238: Detachable spring

[0047] 240: Torsion spring

[0048] 300: Clutch-type tightening device to prevent overload in the direction of release

[0049] 310, 420: Housing 320: Actuator

[0050] 330: Lower rotor 332: Ring

[0051] 400: Bypass cable connection

[0052] 410: Rotating member 412: Connecting member

[0053] 414: Rotating body 420: Housing

[0054] 500: Bypass Cable

[0055] The present invention relates to a top-down fastening type wire clamp for a bypass cable head used in a bypass cable riser connection device for installing a bypass cable during replacement and relocation of a distribution line and uninterruptible power construction for changing a route, and more specifically, when a top-down fastening type wire clamp for a bypass cable head (hereinafter referred to as a "wire clamp") is installed on a power line (W), a top-down fastening hook (200) of the wire clamp is hinge-connected to the upper part of the clamp body (100), and a loosening direction overload prevention clutch-type tightening device (300) is connected to the rear of the top-down fastening hook (200) so that the top-down fastening hook (200) rotates in a top-down direction, that is, from the upper to the lower direction, unlike in the prior art, to fix the power line (W), thereby preventing the wire clamp from being detached from the power line (W) and causing a safety accident due to the wire clamp falling, by having elasticity in connection with the conductor of the power line (W) in the process of fixing the power line (W). The present invention relates to a top-down fastening type wire clamp for a bypass cable head capable of indirect live-line safety work to prevent live-line rupture and an indirect live-line elastic connection method using the same.

[0056] The above-described top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work of the present invention is characterized by comprising: a clamp body (100) having a pair of fixed hooks (110) formed with a receiving groove (112) capable of receiving a power line (W) at the upper portion; and a top-down fastening hook (200) that is hinge-joined between the pair of fixed hooks (110) to grip the power line (W) received in the receiving groove (112) when rotated downward and to release the grip of the power line (W) received in the receiving groove (112) when rotated upward.

[0057] In addition, the top-down fastening hook (200) of the present invention is characterized in that it includes a grip projection (210) that is formed to protrude and extend from the front end, but is formed to protrude so as to have a width smaller than the gap between the pair of fixing hooks (110).

[0058] In addition, the clamp body (100) of the present invention is characterized in that it is formed on the lower front side and includes a grip groove (120) formed to correspond to the grip projection (210) and into which the grip projection (210) is inserted and removed.

[0059] In addition, the top-down fastening hook (200) of the present invention is characterized by including a link coupling part (220) formed at the top; and a rotation link (230) whose lower part is hinge-joined to the link coupling part (220) but is elastically supported at the rear, and whose upper part is connected to one end of an insulating lifting belt (10).

[0060] In addition, the top-down fastening hook (200) of the present invention is characterized in that it includes a torsion spring (240) that is fixed on one side to the inner front upper portion of the link coupling portion (220) and on the other side to the rear of the rotary link (230) to elastically support the rotary link (230) rearward.

[0061] In addition, the rotary link (230) of the present invention is characterized by including a link housing (232) whose lower part is hinge-joined to the link coupling part (220) and whose upper part has a coupling groove (232a) formed therein; a fixing screw (234) whose lower part is coupled to the lower surface of the coupling groove (232a); a detachable member (236) installed on the outer periphery of the fixing screw (234) so ​​as to be positioned between the fixing screw (234) and the link housing (232); and a detachable spring (238) installed on the outer periphery of the fixing screw (234), but whose lower part is supported by the lower surface of the coupling groove (232a) so as to elastically support the detachable member (236) in an upward direction.

[0062] In addition, the present invention is characterized by comprising a clutch-type tightening device (300) for preventing overload in the loosening direction, which comprises a housing (310) hingedly coupled between a pair of fixed hooks (110) and positioned at the rear of the top-down fastening hook (200), an operating body (320) whose lower part is coupled to the upper inner side of the housing (310) so as to be movable in the up-and-down direction and whose upper part is hingedly coupled to the rear of the top-down fastening hook (200), and a lower rotating body (330) coupled to the lower part of the upper housing (310) and moving the operating body (320) in the up-and-down direction.

[0063] In addition, the present invention is characterized by comprising a bypass cable connection part (400) that is rotatably connected to the lower part of the clamp body (100); and a bypass cable (500) that is rotatably connected to the lower part of the bypass cable connection part (400).

[0064] Hereinafter, the present invention will be described in detail with reference to drawings 2 to 12 illustrating embodiments of the present invention.

[0065] First, the top-down fastening type wire clamp for the bypass cable head used in the present invention, i.e., the wire clamp, may be fixed by having the ring (312b) of the loosening direction overload prevention clutch-type tightening device (300), which will be described in detail later, gripped by a live line work stick by a worker and directly placed on the power line (W), or by having the temporary hanger (not shown in the drawing) and the insulating lifting belt (10) connected, and then the temporary hanger is first placed on the power line (W), and then raised or lowered by the insulating lifting belt (10), and then the ring (332) of the loosening direction overload prevention clutch-type tightening device (300) is gripped by a live line work stick by a worker and placed on the power line (W), and then fixed.

[0066] The clamp body (100), which is the main component of the present invention, has a pair of fixed hooks (110) formed at the top with a receiving groove (112) capable of receiving a power line (W), and after the power line (W) is received in the receiving groove (112), a top-down fastening hook (200), which will be described in detail later, is hinged so as to be rotatable in a direction perpendicular to the power line (W) between the pair of fixed hooks (110), so that the power line (W) is fixed, that is, gripped or released by rotating up and down.

[0067] In addition, since the clamp body (100) of the present invention is configured to be placed on a bare portion of a power line (W), its size can be changed as much as desired depending on the thickness and shape of the power line (W), and it is made of a conductive material so that it can be electrically connected to the power line (W).

[0068] Specifically, the clamp body (100) of the present invention has a bypass cable connection part (400) and a bypass cable (500) installed at the lower part, which will be described in detail later, and a pair of fixing hooks (110) integrally formed on both sides of the upper part.

[0069] At this time, it is preferable that the receiving groove (112) be formed in a size that can accommodate power lines (W) of various sizes, and the upper and rear outer peripheries of the power lines (W) fixed by the top-down fastening hook (200) to be described in detail later are formed with a radius of curvature of 3 to 5 cm at the top, and are formed to be inclined forward as the rear side goes downward so that they can be stably and firmly fixed.

[0070] In addition, since the upper and rear sides of the receiving groove (112) are formed as described above, when the top-down fastening hook (200), which will be described in detail later, is rotated from the upper side to the lower side to press the power line (W) upward and backward so that the power line (W) is fixed, the effect of fixing the power line (W) more stably and firmly by having elasticity to connect to the conductor of the power line (W) is realized by closely contacting the upper and rear sides.

[0071] The top-down fastening hook (200), which is a main component of the present invention, is hinge-coupled between the pair of fixed hooks (110) to grip the power line (W) accommodated in the receiving groove (112) when rotated downward, and release the grip of the power line (W) accommodated in the receiving groove (112) when rotated upward. Unlike the conventional method, the top-down direction allows the power line (W) to be fixed when rotated from top to bottom, thereby preventing the wire clamp from being detached from the power line (W) and falling by providing elasticity in connection with the conductor of the power line (W) when installing the wire clamp on the power line (W).

[0072] At this time, the top-down fastening hook (200) of the present invention is connected to a loosening direction overload prevention clutch-type fastening device (300) to be described later, and the worker rotates it with a live-line work stick to fix it.

[0073] To explain further, conventionally, a worker lifts a clamp using a live-line work stick, receives a power line (W) in the receiving groove of the clamp, and then rotates a fixing hook (corresponding to a top-down fastening hook (200) of the present invention) from the bottom upward while the clamp is lifted to fix the power line (W). However, during this process, that is, when receiving the power line (W) in the receiving groove and when the fixing hook is rotated upward, if the power line (W) comes out of the receiving groove or is lifted, the fixing hook is rotated from the top downward by the power line (W), causing the fixation of the power line (W) to be released, and thus a safety accident in which the clamp comes off from the power line (W) frequently occurs.

[0074] However, the wire clamp of the present invention is lifted when a worker uses a live-line work stick to hold the ring (332) of the loosening direction overload prevention clutch-type tightening device (300) to be described later, and the power line (W) is received in the receiving groove (112), and the ring (332), that is, the loosening direction overload prevention clutch-type tightening device (300) is pulled downward with the live-line work stick, and at the same time, the top-down fastening hook (200) of the present invention is rotated from the top to the bottom to fix the power line (W), thereby preventing the power line (W) from being separated when the power line (W) is received in the receiving groove and when the top-down fastening hook (200) is rotated from the top to the bottom, and even when a lifting operation is performed when the top-down fastening hook (200) is rotated from the top to the bottom, the top-down fastening hook (200) is not rotated from the bottom to the top by the power line (W). Because it is not possible, it is possible to obtain an effect that prevents the phenomenon of the power line (W) being unfastened.

[0075] In addition, the top-down fastening hook (200) of the present invention is configured to include a grip projection (210) that is formed to protrude and extend from the front end, but is formed to protrude so as to have a width smaller than the gap between the pair of fixing hooks (110), and the grip projection (210) realizes the effect of stably and firmly fixing the power line (W) accommodated in the accommodation groove (112) even when the power line (W) has various diameters.

[0076] In connection with the above, the clamp body (100) of the present invention is formed on the lower front side and is configured to include a grip groove (120) formed to correspond to the grip projection (210) and into which the grip projection (210) is inserted and withdrawn. When fixing a power line (W) of a relatively small diameter, the grip groove (120) increases the rotation angle of the top-down fastening hook (200) of the present invention so that the grip projection (210) is inserted, thereby realizing the effect of fixing a power line (W) of a relatively small diameter more stably and firmly.

[0077] At this time, it will be obvious that the depth of the gripping groove (120) is formed to be a size capable of gripping the smallest power line (W) among the standardized power lines (W) in which the size of the receiving groove (112) is determined by the thickness in the front-back direction of the clamp body (100) and the rotation of the top-down fastening hook (200), and it will be obvious that various changes can be made at the discretion of a person skilled in the art in order to work on a power line (W) having a diameter within a certain range without considering these matters.

[0078] Meanwhile, the top-down fastening hook (200) of the present invention is configured to include a link coupling part (220) formed at the top, and a rotation link (230) whose lower part is hinge-joined to the link coupling part (220) and whose upper part is connected to one end of an insulating lifting belt (10).

[0079] In addition, the top-down fastening hook (200) of the present invention is configured to include a torsion spring (240) that is fixed on one side to the inner front upper portion of the link coupling portion (220) and on the other side to the rear of the rotary link (230) to elastically support the rotary link (230) rearward.

[0080] That is, the clamp body (100) described above is not directly connected to one end of the insulating belt (10), but is connected to the insulating belt (10) by the rotary link (230), and the rotary link (230) is elastically supported rearward by the torsion spring (240) to move one end of the insulating belt (10) rearward, thereby preventing the insulating belt (10) from moving forward and interfering with work when the wire clamp of the present invention is installed on a power line (W).

[0081] In addition, when installing the wire clamp of the present invention on a power line (W), since the receiving groove (112) of the clamp body (100) is formed in the front as shown in Drawing 10 in the conventional case, the worker raises the wire clamp forward by the height of the power line (W) using a live line work stick or the like, and then places the wire clamp on the power line (W) and then holds the power line (W). However, at this time, the worker naturally holds the lower rear portion of the clamp body (100) to raise the clamp body (100), and thus tilts the clamp body (100) forward, causing a problem in that the insulating lifting belt connected to the upper portion bends forward and comes down, making it difficult to place the power line (W) in the receiving groove (112).

[0082] However, when the wire clamp of the present invention is installed on a power line (W), as shown in Drawing 11, the rotating link (230) connected to one end of the insulating lifting belt (10) is elastically supported backward, so that it rotates backward, and accordingly, one end of the insulating lifting belt (10) also moves backward of the clamp body (100) of the present invention, so that when a worker uses a stick for live work to pull up the wire clamp of the present invention, one end of the insulating lifting belt (10) is bent downward toward the rear of the clamp body (100) of the present invention, so that the power line (W) can be received in the receiving groove (112) without interference of the insulating lifting belt (10), thereby realizing the effect of easy installation.

[0083] In addition, it is preferable that the rotary link (230) be connected and disconnected in a one-touch manner in order to be easily connected or disconnected with the insulating impression belt (10). To this end, the rotary link (230) is configured to include a link housing (232) whose lower part is hinge-connected to the link coupling part (220) and whose upper part has a coupling groove (232a) formed therein, a fixing screw (234) whose lower part is coupled to the lower surface of the coupling groove (232a), a detachable member (236) installed on the outer periphery of the fixing screw (234) so ​​as to be positioned between the fixing screw (234) and the link housing (232), and a detachable spring (238) installed on the outer periphery of the fixing screw (234) so ​​as to be supported on the lower surface of the coupling groove (232a) so as to elastically support the detachable member (236) in an upward direction.

[0084] In addition, the end of the insulating impression belt (10) is provided with a connecting link (not shown in the drawing) having a structure corresponding to the rotating link (230) having the above structure, so that the detachable member (236) can be connected and disconnected in a one-touch manner by sliding along the fixing screw (234) and elastically supported upward, thereby realizing the effect of enabling easier coupling or separation.

[0085] The main component of the present invention, a loosening direction overload prevention clutch-type tightening device (300), is a loosening direction overload prevention clutch-type tightening device described in the registered patent No. 10-2082150 applied for and registered by the applicant of the present invention, wherein the clamp body (100) is hingedly connected, and an operating body (320) that operates up and down is hingedly connected to the rear of the top-down fastening hook (200), and when operated by a worker, the top-down fastening hook (200) is rotated through the operating body (320), but an overload in the loosening direction is prevented, thereby suppressing the generation of excessive rotational force in the loosening direction, thereby preventing the clamp body (100) from suddenly being separated from the power line (W) due to excessive rotational force.

[0086] That is, the loosening direction overload prevention clutch-type tightening device (300) of the present invention allows a worker to rotate the top-down fastening hook (200) using a live line work stick or the like, and accordingly, the wire clamp of the present invention fixes or releases the power line (W) by the top-down fastening hook (200).

[0087] At this time, since the detailed configuration of the release direction overload prevention clutch-type tightening device (300) of the present invention is described in Patent Registration No. 10-2082150, only the configuration of the necessary parts of the present invention will be mentioned.

[0088] Specifically, the loosening direction overload prevention clutch-type tightening device (300) of the present invention comprises a housing (310) hinge-coupled between the pair of fixed hooks (110) and positioned at the rear of the top-down fastening hook (200), an operating body (320) (corresponding to the rotating body (220) of Patent Registration No. 10-2082150) having a lower portion coupled to the upper inner side of the housing (310) so as to be movable in the up-and-down direction and an upper portion hinge-coupled to the rear of the top-down fastening hook (200), and a lower rotating body (330) coupled to the lower portion of the upper housing (310) and moving the operating body (320) in the up-and-down direction.

[0089] In addition, the loosening direction overload prevention clutch-type tightening device (300) of the present invention is configured to include a ring (332) provided on the lower rotating body (330), and the worker connects the ring (332) to a live work stick equipped with an automatic rotating device such as an electric motor, and rotates the ring (332), thereby moving the operating body (320) in the up-and-down direction.

[0090] At this time, as the operating body (320) moves up and down and the top-down fastening hook (200) rotates, the housing (310) also naturally rotates in response to the rotation of the top-down fastening hook (200) around the hinge axis.

[0091] In the present invention's loosening direction overload prevention clutch-type tightening device (300), when the ring (332) is rotated in the tightening direction, the operating body (320) moves upward to rotate the top-down fastening hook (200) from the upper side to the lower side, thereby fixing the wire clamp of the present invention to the power line (W).

[0092] In addition, the clutch-type tightening device (300) for preventing overload in the loosening direction of the present invention moves the operating body (320) downward when the ring (332) is rotated in the loosening direction, thereby rotating the top-down fastening hook (200) from the bottom to the top. At this time, even after the operating body (320) has completely moved downward, if the automatic rotation device is operated, the wire clamp of the present invention may suddenly come off from the power line (W). However, after the operating body (320) has completely moved downward, that is, when it has rotated at a certain rotation speed or more, it idles, thereby preventing excessive rotational force from being generated in the loosening direction, thereby preventing the wire clamp of the present invention from coming off from the power line (W).

[0093] The bypass cable connection part (400), which is a main component of the present invention, is rotatably connected to the lower part of the clamp body (100), so that the clamp body (100) and the bypass cable (500) are connected to each other while the clamp body (100) is placed on the exposed part of the power line (W). In order to improve workability, the clamp body (100) may be configured to be freely rotatable.

[0094] To explain in more detail, the clamp body (100) of the present invention is configured to include a lower coupling portion (130) that is coupled to the lower portion and through which a current-conducting hole (not shown) is formed, and the bypass cable connection portion (400) is characterized in that it includes a rotating member (410) that is rotatably coupled to the clamp body (100) at the upper portion and is coupled to the upper portion of the bypass cable (500) at the lower portion, and a housing (420) that is coupled to the lower coupling portion (130) on the outside of the rotating member (410) to protect the rotating member (410). At this time, electricity of the power line (W) is transmitted to the bypass cable (500) in a rotatable state through the clamp body (100), the lower coupling portion (130), and the rotating member (410).

[0095] The bypass cable (500), which is a main component of the present invention, is connected to the lower part of the bypass cable connection part (400), and is coupled to the lower part of the rotating member (410) of the bypass cable connection part (400) to rotate from the lower part of the clamp body (100), i.e., the lower coupling part (130), thereby realizing the effect of improving workability. In other words, the clamp body (100) is rotated on the upper part of the bypass cable connection part (400), thereby realizing the effect of improving workability.

[0096] At this time, the rotating member (410) is configured to include a connecting member (412) that is connected by penetrating the current hole so as to be rotatable to the lower part of the clamp body (100), i.e., the lower connecting part (130), and a rotating body (414) that is connected to the lower part of the connecting member (412) and to which the upper part of the bypass cable (500) is connected to the lower part, and the connecting member (412) has a protruding part (not shown in the drawing) protruding from the upper part that is in close contact with the lower part of the clamp body (100), thereby realizing an effect in which the clamp body (100) rotates smoothly and current is transmitted to the bypass cable (500) connected via the rotating body (414) in a rotatable state.

[0097] That is, the bypass cable (500) is configured to be connected by having one end inserted through the end of the bypass cable connection portion (400) and the other end inserted through the end of another bypass cable connection portion (400), thereby connecting and energizing two wire clamps.

[0098] Next, the indirect live line elastic connection method using a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work as described above is explained as follows.

[0099] The indirect live line elastic connection method using a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work according to the present invention (hereinafter referred to as the 'indirect live line elastic connection method') can be composed of 7 steps, which include a work preparation process (S10), a bypass cable connection process (S20), a jumper wire separation process (S30), a main work process (S40), a jumper wire connection process (S50), a bypass cable separation process (S60), and a finishing process (S70).

[0100] The indirect live-line elastic connection method of the present invention will be described as an example of performing uninterruptible power distribution work using an indirect live line, such as installing and replacing a switch in a live state or performing uninterruptible power distribution work, or performing uninterruptible power distribution work using an indirect live line, such as installing a construction switch on a live pole to separate a section and then relocating and replacing a pole or replacing a wire as a diagonal work, or performing uninterruptible power distribution work using an uninterruptible transformer device, such as installing, replacing, or relocating a transformer on a live pole, or performing uninterruptible power distribution work using an indirect live line, such as relocating, replacing, or changing the route of a high-voltage distribution line by laying an uninterruptible bypass cable.

[0101] The above work preparation process (S10) is a process of preparing the power line (W) in a live state by connecting a bypass cable raising device and a top-down fastening type wire clamp for the bypass cable head to the bypass cable on the power side and the load side, respectively.

[0102] The above bypass cable connection process (S20) is a process of elastically connecting a top-down fastening type wire clamp for a bypass cable head to which a bypass cable (500) is connected to a bare power line (W) using an insulating stick for live wires.

[0103] The above jumper wire separation process (S30) is a process for preparing the main work by separating the jumper wires on both sides of the work section after connecting the top-down fastening type wire clamp for the bypass cable head and the above-mentioned power line (W).

[0104] The above work process (S40) is a process of performing power distribution work within the work section in a diagonal state after the jumper wire separation process (S30).

[0105] At this time, replacement and relocation of the pole or installation, replacement or relocation of the switch can be performed in a diagonal state with the jumper wire separated.

[0106] The above jumper wire connection process (S50) is a process of supplying power within the work section by connecting the jumper wires on both sides of the work section after the above work process (S40).

[0107] The bypass cable separation process (S60) is a process of separating a top-down fastening type wire clamp for a bypass cable head connected to a bypass cable (500) installed on a power line (W).

[0108] This is a process in which a worker rotates a clutch-type tightening device (300) for preventing overload in the loosening direction of a top-down fastening type wire clamp for a bypass cable head using a live line insulating stick to open a top-down fastening hook (200), thereby allowing the top-down fastening type wire clamp for a bypass cable head to be released from the power line (W).

[0109] The above finishing process (S70) is a process of removing the top-down fastening type wire clamp for the bypass cable head to which the bypass cable (500) is connected and the bypass cable (500) and organizing the site.

[0110] In addition, as illustrated in Drawing 13, in the case where the transformer replacement and relocation work is performed without interruption using the uninterruptible transformer device (60), the jumper wire separation process (S30) is performed by connecting the top-down fastening type wire clamp for the bypass cable head to which the power line (W) and the bypass cable (500) are connected, and then the transformer (50) is bypass-connected without interruption using the uninterruptible transformer device (60) and the COS lowering line (41) is separated, and the main work process (S40) is performed by performing the transformer replacement and relocation work in a diagonal state after the COS lowering line (41) is separated, and the jumper wire connection process (S50) can be replaced by sequentially connecting the COS lowering line (41) by phase after the main work process (S40).

[0111] As a result, the top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work of the present invention has an effect of preventing safety accidents caused by detachment from the power line (W) and falling by having elasticity in connection with the conductor of the power line (W) by fixing the top-down fastening hook (200) in a top-to-bottom direction, that is, wrapping the power line (W) from top to bottom, unlike the conventional one.

[0112] The above has been described with reference to a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and a person having ordinary skill in the art to which the present invention pertains can make various changes without departing from the gist of the present invention through the above embodiment.

Claims

1. A clamp body (100) having a pair of fixed hooks (110) formed with a receiving groove (112) capable of receiving a power line (W) at the upper portion; and A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized by comprising a top-down fastening hook (200) that is hinge-coupled between a pair of fixed hooks (110) and, when rotated downward, grips a power line (W) accommodated in the receiving groove (112), and when rotated upward, releases the grip of the power line (W) accommodated in the receiving groove (112).

2. In paragraph 1, The above top-down fastening hook (200) A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a protrusion (210) that is formed by extending and protruding from the front end and has a width smaller than the gap between the pair of fixing hooks (110).

3. In paragraph 2, The above clamp body (100) A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a grip groove (120) formed on the lower front side to correspond to the grip projection (210) and into which the grip projection (210) is inserted and removed.

4. In paragraph 1, The above top-down fastening hook (200) A link joint (220) formed on the upper side; and A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a rotating link (230) whose lower part is hinge-connected to the above link connection part (220) and is elastically supported toward the rear, and whose upper part is connected to one end of an insulating impression belt (10).

5. In paragraph 4, The above top-down fastening hook (200) A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a torsion spring (240) having one side fixed to the inner front upper portion of the link coupling portion (220) and the other side fixed to the rear of the rotary link (230) to elastically support the rotary link (230) rearward.

6. In paragraph 5, The above rotary link (230) A link housing (232) having a lower portion hinged to the above link joint (220) and a joint groove (232a) formed on the upper portion; and A fixing screw (234) that is connected to the lower surface of the above-mentioned joining groove (232a); and A detachable member (236) installed on the outer periphery of the fixed screw (234) so ​​as to be positioned between the fixed screw (234) and the link housing (232); and A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a detachable spring (238) installed on the outer periphery of the above-mentioned fixing screw (234) and supported at the lower surface of the above-mentioned joining groove (232a) to elastically support the above-mentioned detachable member (236) in an upward direction.

7. In paragraph 1, The top-down fastening type wire clamp for the bypass cable head that enables the above indirect live line safety work is A housing (310) that is hingedly connected between the above pair of fixed hooks (110) and is positioned at the rear of the top-down fastening hook (200), An operating body (320) whose lower part is coupled to the upper inner side of the housing (310) so as to be able to move up and down, and whose upper part is hinge-coupled to the rear of the top-down fastening hook (200) and A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a loosening direction overload prevention clutch-type tightening device (300) including a lower rotating body (330) coupled to the lower portion of the upper housing (310) and moving the operating body (320) in an up-and-down direction.

8. In paragraph 1, The top-down fastening type wire clamp for the bypass cable head that enables the above indirect live line safety work is A bypass cable connection part (400) rotatably connected to the lower part of the above clamp body (100); and A top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work, characterized in that it comprises a bypass cable (500) connected in a rotatable state to the lower part of the above bypass cable connection part (400).

9. In an indirect live line elastic connection method using a top-down fastening type wire clamp for a bypass cable head capable of indirect live line safety work as claimed in any one of clauses 1 to 8, A work preparation process (S10) for preparing a bypass cable (500) with a top-down fastening type wire clamp for a bypass cable head connected to the power side and the load side of a live power line (W); and A bypass cable connection process (S20) in which a top-down fastening type wire clamp for a bypass cable head to which a bypass cable (500) is connected is elastically connected to a bare power line (W) using an insulating stick for a live line; and After connecting the top-down fastening type wire clamp for the bypass cable head to which the power line (W) and bypass cable (500) are connected, a jumper wire separation process (S30) for separating the jumper wires on both sides of the working section; and After the jumper wire is separated, this work process (S40) performs diagonal work within the work section in a diagonal state; and After the main work, the jumper wire connection process (S50) sequentially connects the jumper wires on both sides of the work section by phase; and Bypass cable separation process (S60) for separating the top-down fastening type wire clamp for the bypass cable head installed on the power line (W) using an insulating stick for live line work; and An indirect live-line elastic connection method using a top-down fastening type wire clamp for a bypass cable head capable of indirect live-line safety work, characterized in that it includes a finishing process (S70) of removing a bypass cable (500) connected to a top-down fastening type wire clamp for a bypass cable head and organizing the site.

10. In paragraph 9, When replacing or relocating a transformer without interruption using an uninterruptible transformer device (60), The above jumper wire separation process (S30) After connecting the top-down fastening type wire clamp for the bypass cable head to which the above power line (W) and bypass cable (500) are connected, the transformer (50) is connected to the bypass without interruption using the uninterruptible transformer device (60) and the COS lowering line (41) is separated. The above main work process (S40) After the COS lowering line (41) is separated, transformer replacement and relocation work is performed in a diagonal state. The above jumper wire connection process (S50) An indirect live-line elastic connection method using a top-down fastening type wire clamp for a bypass cable head capable of indirect live-line safety work, characterized in that after this work process (S40), the COS lowering line (41) is sequentially connected by phase.

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