Wire fastening method and connecting fittings used in this method

Abstract

To provide a wire tightening method and a connecting fitting used in this wire tightening method which have an extension kamares tool that can be used repeatedly by being removed when tightening a transmission line, leading to shortening of the work time for tightening and improvement in work efficiency and worker safety.SOLUTION: In a wire tightening method that is performed via a four-conductor yoke connected to an insulator string supported by a steel tower, a sag adjustment metal fitting for a transmission line, a semi metal wheel, extension kamares tool, a wire tightening tool, and two kamares fittings connected to a short clamp that grips the transmission line, and connecting fittings used in this wire tightening method, after the transmission line is extended, the extension kamares tool can be removed during the wire tightening work, and the wire tightening tool that bends in the vertical direction to the semi metal wheel and the connecting fitting d is used.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wire tensioning method and connecting fittings used in the wire tensioning method, and more specifically, to a wire tensioning method and connecting fittings used in the wire tensioning method in which, after a transmission line is tensioned, a kamaress tool, which is used only when tensioning the line, can be removed so that the kamaress tool can be used repeatedly and the subsequent connection work for tensioning the line is also made easier, and there is no need to change the semi-metal car for each transmission line, thereby improving work efficiency and reducing work time.

[0002] "Extension" refers to the process of stringing the power line by passing it through a cart attached to the tower and pulling it with a winch over a 2 to 4 km section between transmission line towers (hereafter referred to as "towers"), while "tightening" refers to the process of adjusting the slack of the extended power line to the level determined in advance by the design. [Background technology]

[0003] Patent Document 1 discloses a kamaress fitting that includes a plurality of oscillating block bodies (kamaress fittings) and a plurality of pivot shafts that pivotally connect the oscillating block bodies (kamaress fittings), one end of which is pivotally connected to the power transmission line side and the other end of which is pivotally connected to the extension wire side. In the case of the kamaress fitting of Patent Document 1, the intermediate oscillating block body (kamaress fitting) has a tool mounting portion to which a wire tightening tool is attached and an eye portion connected to the end of the tool mounting portion, and the oscillating block body (kamaress fitting) pivotally connected to the power transmission line side has a clevis portion pivotally connected to the eye portion of the oscillating block body (kamaress fitting). Therefore, when a tensile force acts on the intermediate swing block body (kamaress metal fitting) during wire-drawing work, the distance from the point of application of this tensile force to the clevis part becomes relatively short, which has the effect of preventing deformation of the eye part and the clevis part due to the tensile force applied during wire-drawing work and wire-tightening work. However, this approach has the problem that the number of parts increases and the work time is required.

[0004] Patent document 2 discloses a wiring method for tightening an extended power transmission line that makes it easy to connect a connecting fitting and a slack adjustment fitting, as well as a connecting fitting and a connecting fitting unit used in the wiring method. In Patent Document 2, three camless fittings are connected to a short clamp. In addition, two sets of semi-metal wheels are used, and the work of fastening the wire is performed by switching the work of fastening the wire on the top side and the bottom side, so the work of fastening the wire takes a lot of time.

[0005] In addition, since most of the work of stringing power lines is done at heights of over 100m above ground, it is important to ensure the safety of workers. However, since the work of handling heavy objects, such as the weight of each of the semi-metal casters used in the stringing method, and the weight of the wire for semi-metal casters, is 1kg / m, and the work is done at high places with poor footing such as on top of steel towers, there have been frequent accidents involving workers or heavy objects such as tools falling. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2003-169412 A [Patent Document 2] JP 2012-125093 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to solve the problems of the prior art described above by reducing the number of parts of connecting fittings and improving the efficiency of the wiring work, thereby shortening the wiring work time and ensuring the safety of workers. That is, the present invention aims to provide a wiring method and connecting fittings used in this wiring method that enable repeated use of camless fittings when wiring power transmission lines, reduce the wiring work time, and improve the safety of workers. [Means for solving the problem]

[0008] The invention according to claim 1 is a wiring method for wiring a power transmission line stretched between steel towers, The wire tensioning method is carried out through a four-conductor yoke connected to an insulator string supported by a steel tower, a transmission line slack adjustment fitting, a semi-metal wheel, a camless tool for wire extension, a wire tensioning tool, and two camless fittings connected to short clamps for holding the transmission line. During wire drawing, the short clamp that holds the power transmission wire has its longitudinal ends rotatably connected to the two kamares fittings via a first connecting shaft, and its other end is rotatably connected to the longitudinal end of the kamares tool for wire drawing via a third connecting shaft, and the other end of the kamares tool for wire drawing is rotatably connected to the end of the wire connector connected to the wire drawing wire via a fourth connecting shaft, The two kamaress fittings are comprised of a first kamaress fitting and a second kamaress fitting, and when the wire drawing operation is completed, the first kamaress fitting has a longitudinal end rotatably connected to the short clamp via a first connecting shaft and the other end rotatably connected to the second kamaress fitting via a second connecting shaft, and the second kamaress fitting has a longitudinal end rotatably connected to the first kamaress fitting via a second connecting shaft and the other end rotatably connected to the wire drawing kamaress tool via a third connecting shaft, In the wire tensioning method, after the wire extension work is completed, 1) step 1 of rotatably connecting the wire tightening tool to the first camless fitting through a wire tightening tool attachment hole; 2) a step 2 of rotatably connecting the wire tightening tool to the semi-finished wheel connected to the four conductor yokes via a fifth connecting shaft of the wire tightening tool; 3) a step of removing the wire drawing camless tool and the wire connector and wire drawing wire connected thereto from the first camless fitting while the semi-metal car is being towed; 4) step 4 of connecting the slack adjustment fitting connected to the top side of the four conductor yokes to the first camless fitting; 5) The connected slack adjuster Adjustment Step 5 of fastening the power transmission line connected to the top side of the four conductor yokes via metal fittings; 6) step 6 of removing the wiring tool connected to the tip of the semi-metal wheel from the first camless metal fitting connected to the power transmission line fastened in step 5; 7) step 7 of connecting the fastening tool and the semi-metal wheel removed in step 6 to the second camless metal fitting connected to another power transmission line through the fastening tool attachment hole by rotating a fifth connecting shaft; 8) step 8 of removing the wire drawing camless tool and the wire connector and wire drawing wire connected thereto from the first camless fitting while the semi-metal car is being towed; 9) step 9 of connecting the slack adjustment fitting connected to the ground side of the four conductor yoke to the first camless fitting; 10) The connected slack adjustment Adjustment A step 10 of fastening the power transmission line connected to the ground side of the four-conductor yoke through a metal fitting, and removing the fastening tool connected in the seventh step and the semi-metal wheel connected thereto from the first kamaless metal fitting connected to the power transmission line; The present invention relates to a wire-tightening method comprising the steps of:

[0009] The invention according to claim 2 is a connecting metal fitting used in the wire tensioning method according to claim 1, The kamaress tool for wire drawing can be removed from the third connecting shaft of the second kamaress fitting during wire tightening after the wire drawing work is completed, The four conductor yokes are connected to an insulator string supported by a steel tower; the slack adjustment fitting, the longitudinal end of which is rotatably connected to the four conductor yoke via a connecting fitting a; the second camless fitting rotatably connected to the other end of the slack adjustment fitting via a connecting fitting b and a connecting fitting c; a first kamaress fitting rotatably connected to the second kamaress fitting by a second connecting shaft; Two of the semi-metal wheels rotatably connected to the four-conductor yoke or the fastening tool via a connecting fitting d; A wire tightening tool having a longitudinal end rotatably connected to the connecting fitting d of the semi-metal wheel and another end connected to the second camless fitting through a wire tightening tool mounting hole; The present invention relates to a connecting metal fitting comprising:

[0010] The invention according to claim 3 relates to the connecting fittings according to claim 2, characterized in that the fastening tool is bent perpendicularly to the semi-metal wheel and connecting fitting d at the connection point.

[0011] The invention of claim 4 relates to the connecting fittings as described in claim 2 or 3, wherein the alternative connecting fittings for the camless wire drawing tool are selected from the group consisting of right-angle clevises, right-angle clevis links, right-angle links, angle clevises, angle clevis links, and angle links. Effect of the Invention

[0012] According to the invention of claim 1, after the wire extension work is completed, 1) Step 1 of rotatably connecting a wire tightening tool to a second camless fitting through a wire tightening tool attachment hole; 2) a step 2 of rotatably connecting the wire tightening tool to a semi-finished wheel connected to the fourth conductor yoke via a fifth connecting shaft of the wire tightening tool; 3) a step 3 of removing the wire-drawing camless tool and the wire connector and wire-drawing wire connected thereto from the second camless fitting while the semi-tow car is being towed; 4) a step 4 of connecting a slack adjustment fitting connected to the top side of the four-conductor yoke to the second camless fitting; 5) Connected sag adjustment Adjustment Step 5 is to fasten the power transmission line connected to the top side of the four-conductor yoke via a metal fitting; 6) step 6 of removing the wiring tool connected to the tip of the semi-metal car from the second camless metal fitting connected to the power transmission line connected in step 5; 7) step 7 of connecting the fastening tool and the semi-metal wheel removed in step 6 to the second camless metal fitting connected to another power transmission line through the fastening tool attachment hole by rotating a fifth connecting shaft; 8) a step of removing the wire-drawing camless tool and the wire connector and wire-drawing wire connected thereto from the second camless fitting while the semi-tow car is being towed; 9) a step 9 of connecting a slack adjustment fitting connected to the ground side of the four-conductor yoke to the second camless fitting; 10) Connected sag adjustment Adjustment A step 10 of fastening the power transmission line connected to the ground side of the four-conductor yoke through the metal fitting, and removing the fastening tool connected in the seventh step and the semi-metal wheel connected thereto from the second kamaless metal fitting connected to the power transmission line; Since this is a wire tensioning method characterized by having the above-mentioned, there is no need to change the semi-metal wheels as in conventional methods, which improves work efficiency and significantly reduces work time. Furthermore, by reducing the number of work steps, the safety of workers can be improved.

[0013] According to the invention of claim 2, the connecting fittings used in the tensioning method of claim 1 include a kamaress tool for wire-drawing that can be removed from the third connecting shaft of the second kamaress fitting when tensioning after completion of the wire-drawing, so that the removed kamaress tool for wire-drawing can be used repeatedly for wire-drawing work, and wire-drawing work can be performed with a simple number of work steps. Furthermore, by reducing the number of work steps, the safety of workers can be improved.

[0014] According to the invention of claim 3, the connecting fittings are as described in claim 2, characterized in that the tensioning tool is bent perpendicular to the semi-metal wheel and connecting fitting d at the connection point.Since the tensioning tool, the semi-metal wheel and connecting fitting d are perpendicular, removal and connection operations are facilitated, work efficiency is improved, and work time can be significantly reduced. Furthermore, compared to a connecting metal fitting that bends horizontally, for example, the number of metal fitting parts required for connection can be reduced.

[0015] According to the invention of claim 4, the alternative connecting fitting for the kamaress tool for wire drawing, which is removed when tightening the wire, is selected from the group consisting of right-angle clevis, right-angle clevis link, right-angle link, angle clevis, angle clevis link, and angle link, and is not an expensive kamaress fitting made of a special material such as chrome molybdenum steel, but is a tool that is commonly used in overhead power line construction methods, etc., and can use a lightweight and highly versatile material. [Brief description of the drawings]

[0016] [Figure 1] 1 is a plan view showing the entirety of the connecting metal fittings used in the wire tensioning method according to the present invention, where (a) is a plan view seen from above, and (b) is a side view (arrow view) of the part indicated by the arrow in the 90° lateral direction of (a). [Diagram 2] 1A is a plan view showing a part of a connecting metal fitting used in a wire tensioning method according to the present invention, and FIG. [Diagram 3] 1 is a side view showing steps 1 and 2 in one embodiment of a wire-stretching method according to the present invention. FIG. [Figure 4] 4 is a side view showing step 3 in one embodiment of the wire tensioning method according to the present invention. FIG. [Diagram 5] 4 is a side view showing step 3 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 6] 4 is a side view showing step 4 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 7] 4 is a side view showing step 4 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 8] 1 is a side view showing step 5 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 9] 1 is a side view showing step 5 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 10] 1 is a side view showing step 6 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 11] 10 is a side view showing step 7 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 12] 10 is a side view showing step 8 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 13] 10 is a side view showing step 8 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 14] 10 is a side view showing step 9 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 15] 10 is a side view showing step 9 in one embodiment of the wire tensioning method according to the present invention. FIG. [Figure 16] 1 is a side view showing step 10 in one embodiment of a wire tensioning method according to the present invention. FIG. [Figure 17] 1A and 1B are plan views showing connecting metal fittings used in a conventional wire tensioning method, where (a) is a plan view seen from above, and (b) is a side view showing a 90° side view of (a). [Figure 18] This is a plan view showing a kamaless metal fitting used in a connecting metal fitting used in a conventional wire tightening method, where (a) is a plan view seen from above, and (b) is a side view showing a 90° side view of (a). [Figure 19] Fig. 1 shows an example of a general-purpose kamaress fitting among the connecting fittings used in the wire-tightening method of the present invention, where (a) is a plan view seen from above, (b) is a side view showing a 90° side view of (a), and (c) is a side view showing a side view of a state in which a wire-tightening tool is rotatably connected to a second kamaress fitting through a wire-tightening tool attachment hole from the state of (b). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of a wire tensioning method according to the present invention will be described with reference to the drawings. The wire-stretching method according to the present invention will be described with reference to Figs.

[0018] An example of the wire-stretching method according to the present invention will be described in detail below. Note that the method described below is merely an example and is not intended to be limiting. In the following example, the wiring work is carried out using the connecting fittings (1) according to the present invention, but this is not limited to this, and any connecting fittings (1) that can carry out the following steps and that are obvious to a person skilled in the art may be used.

[0019] FIG. 1(a) is a plan view seen from above of a connecting metal fitting (1) according to one embodiment of the present invention, and (b) is a side view showing a 90° side direction of (a). The connecting fittings according to the present invention shown in FIG. 1 include a four-conductor yoke (22) connected to an insulator string supported on a steel tower, a transmission line slack adjustment fitting (24), connecting fitting a (25), connecting fitting b (26), connecting fitting c (27), connecting fitting d (28), a semi-metal caster (18), a camless tool for wire drawing (4), a tightening tool (17), and two camless fittings, a first camless fitting (7) and a second camless fitting (8), connected to a short clamp (3) that holds the transmission line.

[0020] As shown in Fig. 2, the connecting fittings (1) according to the present invention include a first kamaress fitting (7) and a second kamaress fitting (8). These kamaress fittings may be any of the general-purpose right-angle clevises (30), right-angle clevis links (32), angle clevises, angle clevis links, right-angle links (31), angle links, etc. that have been conventionally used in the tightening of power transmission lines and are obvious to those skilled in the art.

[0021] The first kamaress fitting (7) and the second kamaress fitting (8) of the connecting fittings (1) are integrated by being connected by the second connecting shaft (12). The first kamaress fitting (7) and the second kamaress fitting (8) of the connecting fittings (1), and the kamaress tool for wire drawing (4) have a roughly elliptical shape when viewed from above, and are connected to the wire connector (6) in the order of the first kamaress fitting (7), the second kamaress fitting (8), and the kamaress tool for wire drawing (4) from the short clamp (3) side. The components of the connecting fittings (1) each have a connecting shaft at their longitudinal end, and are rotatably connected by the first connecting shaft (11) between the short clamp (3) and the first kamaress fitting (7), the second kamaress fitting (7) and the second kamaress fitting (8) with the second connecting shaft (12), the second kamaress fitting (8) and the kamaress tool for wire drawing (4) with the third connecting shaft (13), and the kamaress tool for wire drawing (4) and the wire connector (6) with the fourth connecting shaft (14). During the wire tightening operation, a wire tightening tool (17) is rotatably connected to the second kamaless fitting (8) through the wire tightening tool attachment hole (16).

[0022] The shapes of the first kamaress fitting (7), the second kamaress fitting (8), and the kamaress tool for wire drawing (4) in the connecting fittings (1) are not limited to an approximately elliptical shape when viewed from above, and may be any shape, such as an oval shape, a rectangular shape, etc., as long as the first kamaress fitting (7) and the second kamaress fitting (8) can be integrated together. Furthermore, the shapes of the second connecting shaft (12) and the third connecting shaft (13) are such that they can be rotatably connected to the first kamares fitting (7) and the second kamares fitting (8), and may be any shape that is obvious to a person skilled in the art.

[0023] As described above, the connecting mechanism of the first kamaress fitting (7), the second kamaress fitting (8), and the kamaress tool for wire drawing (4) in the connecting fittings (1) is not particularly limited, but may be, for example, connected by a cotter pin provided on both ends of the first kamaress fitting (7) and the second kamaress fitting (8). Furthermore, the second connecting shaft (12) and the third connecting shaft (13) may be made of not only cotter pins but also any other components that are commonly used for connections, such as bolts, as long as they are obvious to those skilled in the art.

[0024] FIG. 3 is a side view showing steps 1 and 2 in one embodiment of the wire tensioning method of the present invention, and shows the steps of rotatably connecting the wire tensioning tool (17) to the second camless fitting (8) via the wire tensioning tool mounting hole (16), and subsequently rotatably connecting the wire tensioning tool (17) to the semi-metal wheel (18) connected from the four-conductor yoke (22) via the fifth connecting shaft (15). In step 1, as shown in FIG. 19(c), the wire tightening tool (17) is rotatably connected to the second camless fitting (8) through the wire tightening tool attachment hole (16).

[0025] The semi-cylinder wheel (18) is used in the tightening work of the power transmission line, while connected to the four-conductor yoke (22), to hold the power transmission line (2) until the second camless fitting (8) is connected to the slack adjustment fitting (24).

[0026] FIG. 4 is a side view showing step 3 in one embodiment of the wire tensioning method of the present invention, and shows the step of towing the semi-metal pulley (18) after connecting the semi-metal pulley (18) to the wire tensioning tool (17) in FIG.

[0027] FIG. 5 is a side view showing step 3 in one embodiment of the wire tensioning method of the present invention, and shows the process of removing the wire tensioning kamaress tool (4) and the wire connector (6) and wire tensioning wire (5) connected thereto from the second kamaress fitting (8) while the semi-claw pulley (18) is being pulled. Examples of tools that can be used in the tensioning tool (17) of the present invention include special parallel clevises and U-clevises, but any member that is obvious to a person skilled in the art can be used.

[0028] In the connecting fittings (1) according to the present invention, the kamaress tool (4) for wire drawing can be removed, and wire tightening work is performed by removing the kamaress tool (4) for wire drawing. This makes it possible to reduce the number of parts used during the wiring work, thereby improving workability and reducing the work time (particularly the work time at high altitudes). The camless wire-drawing tool (4) that is removed during the wire-tightening work is not particularly limited, and any tool that is commonly used during the wire-drawing work of the power transmission line (2) and is obvious to a person skilled in the art, such as a right-angle clevis, right-angle clevis link, right-angle link, angle clevis, angle clevis link, and angle link, can be used.

[0029] Figures 6 and 7 are side views showing step 4 in one embodiment of the wire tensioning method of the present invention, and show the step of connecting the slack adjustment fitting (24) connected to the top side of the four-conductor yoke (22) to the second kamares fitting (8).

[0030] 8 and 9 are side views showing step 5 in one embodiment of the wire-tightening method according to the present invention, and show the connected slack adjustment wires. Adjustment This shows the process of fastening the power transmission line (2) connected to the top side of the four-conductor yoke via the metal fitting (24). In Fig. 8, the fastening work begins using the slack adjustment metal fitting (24) connected in Fig. 7, and the fastening work is completed when the state shown in Fig. 9 is reached.

[0031] FIG. 10 is a side view showing step 6 in one embodiment of the wire tensioning method of the present invention, illustrating the step of removing the wire tensioning tool (17) connected to the tip of the semi-claw caster (18) from the second camless fitting (8) connected to the power transmission line (2) tensioned in step 5.

[0032] FIG. 11 is a side view showing step 7 in one embodiment of the wire tensioning method according to the present invention, and shows the step of connecting the wire tensioning tool (17) removed in step 6 to the second camless fitting (8) connected to another power transmission line (2) via the wire tensioning tool mounting hole (16) by rotating the fifth connecting shaft (15) of the connecting tool d (28) connected to the semi-cylinder wheel (18).

[0033] Figures 12 and 13 are side views showing step 8 in one embodiment of the wire tensioning method of the present invention, with Figure 12 showing the state in which the semi-metal wheel (18) has been pulled after step 7, and Figure 13 showing the process of removing the wire-tensioning kamaress tool (4) and the wire connector (6) and wire-tensioning wire (5) connected thereto from the second kamaress fitting (8) with the semi-metal wheel (18) being pulled.

[0034] Figures 14 and 15 are side views showing step 9 in one embodiment of the wire tensioning method of the present invention, and show the step of connecting the slack adjustment fitting (24) connected to the ground side of the four-conductor yoke (22) to the second kamares fitting (8).

[0035] FIG. 16 is a side view showing step 10 in one embodiment of the wire-tightening method according to the present invention, and shows the connected slack adjustment wire. Adjustment This shows the process of tightening the power transmission line (2) connected to the ground side of the four-conductor yoke (22) via the metal fitting (24), and removing the tightening tool (17) connected in step 7 and the semi-metal caster (18) connected to the tightening tool (17) via the connecting tool d (28) from the second camless metal fitting (8) connected to the power transmission line (2).

[0036] FIG. 17 is a plan view showing a connecting metal fitting (1) used in a conventional wire tightening method. In the conventional wiring method, it was necessary to provide a semi-metal wheel on each of the top and bottom sides of the four-conductor yoke (22), which made the wiring work inefficient and took a lot of time to replace the semi-metal wheels. However, in the wiring method according to the present invention, the top and bottom sides of the four-conductor yoke (22) are wired with a single semi-metal caster (18), improving work efficiency and significantly shortening work time. In addition, the reduction in labor hours has improved worker safety.

[0037] FIG. 18 is a plan view showing a camless fitting used in a connecting fitting (1) in a conventional wire tightening method. The connecting fittings (1) in the conventional wire tightening method consisted only of a right-angle clevis link (32) as shown in FIG.

[0038] However, as shown in FIG. 19, the general-purpose kamaress fittings used in the connecting fittings in the wire tensioning method of the present invention can be any tool obvious to those skilled in the art, such as a right-angle clevis (30), right-angle link (31), and right-angle clevis link (32), as well as an angle clevis, angle link, and angle clevis link, to name a few. EXAMPLES

[0039] (Measurement of the work time required for the wire fastening process) The average work time (minutes) for each step in the tensioning method of the present invention was measured and compared with the work time required for the conventional tensioning method. For both the tensioning method of the present invention and the conventional tensioning method, the average value of the values ​​measured three or more times for each step was calculated. The working time in the wire-tightening method according to the present invention was measured by carrying out the method shown in Figs.

[0040] In the conventional tensioning method, a step 11 of replacing the semi-finished wheels is required between steps 6 and 7 of the tensioning method according to the present invention. Specifically, step 11 involves wrapping a rope around the semi-finished wheel attached to the upper yoke, suspending it, and removing the bolt connecting the semi-finished wheel to the yoke. The semi-finished wheel is then suspended by the rope, moved to the connection with the lower yoke, connected, and the rope removed.

[0041] Table 1 compares the average time required for the wire tensioning method according to the present invention with the time required for the conventional wire tensioning method.

[0042] [Table 1]

[0043] As shown in Table 1, the work time (minutes) required for the wire tensioning method of the present invention was reduced by approximately two-thirds compared to the conventional method, due to the elimination of step 11. From these results, it is clear that the work efficiency in the wire brazing process according to the present invention is significantly improved compared to the conventional method. [Industrial Applicability]

[0044] The wire-tightening method and the connecting metal fittings used in the wire-tightening method according to the present invention allow the wire-tightening camless tool, which is used only during wire-tightening, to be removed after the power transmission line is tensioned, so that the wire-tightening camless tool can be used repeatedly, and the subsequent connection work for the wire-tightening process becomes easy. Moreover, since it is not necessary to change the semi-metal car for each power transmission line, the work time for the wire-tightening process is shortened, the work efficiency is improved, and the construction period is shortened. In addition, it can be effectively used to improve the safety of workers. Therefore, the wiring method of the present invention and the connecting fittings used in this wiring method can be suitably used for wiring work between steel towers. [Explanation of symbols]

[0045] 1 Connecting hardware 2. Power Lines 3 Short Clamp 4 Kamares tool for wire extension 5. Extension wire 6 Wire Connector 7. First Kamares fitting 8. Second Kamares Fitting 11 1st connection shaft 12 2nd connection shaft 13 Third connection shaft 14 4th connection shaft 15 5th connection shaft 16. Wire tightening tool mounting hole 17 Tensioning tools 18 Semi-golden car 21 Insulator Ren 22 4 conductor yoke 24 Slack adjustment fitting 25 Connecting tool a 26 Connection tool b 27 Connection tool c 28 Connection tool d 30 Right angle clevis 31 Right Angle Link 32 Right angle clevis link

Claims

1. A method for fastening a power transmission line stretched between steel towers, comprising the steps of: The wire tensioning method is carried out through a four-conductor yoke connected to an insulator string supported on a steel tower, a transmission line slack adjustment fitting, a semi-metal wheel, a camless tool for wire extension, a wire tensioning tool, and two camless fittings connected to short clamps for holding the transmission line, During wire drawing, the short clamp that holds the power transmission wire has its longitudinal ends rotatably connected to the two kamares fittings via a first connecting shaft, and its other end is rotatably connected to the longitudinal end of the kamares tool for wire drawing via a third connecting shaft, and the other end of the kamares tool for wire drawing is rotatably connected to the end of a wire connector connected to the wire for wire drawing via a fourth connecting shaft, The two kamaress fittings comprise a first kamaress fitting and a second kamaress fitting, and when the wire drawing operation is completed, the first kamaress fitting has a longitudinal end rotatably connected to the short clamp via a first connecting shaft and the other end rotatably connected to the second kamaress fitting via a second connecting shaft, and the second kamaress fitting has a longitudinal end rotatably connected to the first kamaress fitting via a second connecting shaft and the other end rotatably connected to the wire drawing kamaress tool via a third connecting shaft, In the wire tensioning method, after the wire extension work is completed, 1) step 1 of rotatably connecting the wire tightening tool to the second camless fitting through a wire tightening tool attachment hole; 2) a step 2 of rotatably connecting the wire tightening tool to the semi-finished wheel connected to the four conductor yokes via a fifth connecting shaft of the wire tightening tool; 3) removing the wire drawing camless tool and the wire connector and wire drawing wire connected thereto from the second camless fitting while the semi-metal car is being towed; 4) step 4 of connecting the slack adjustment fitting connected to the top side of the four conductor yoke to the second camless fitting; 5) Step 5 of fastening the power transmission line connected to the top side of the four-conductor yoke via the connected slack adjustment fitting; 6) step 6 of removing the fastening tool connected to the tip of the semi-metal wheel from the second camless metal fitting connected to the power transmission line fastened in step 5; 7) step 7 of connecting the fastening tool and the semi-metal wheel removed in step 6 to the second camless fitting connected to another power transmission line through the fastening tool attachment hole by rotating a fifth connecting shaft; 8) step 8 of removing the wire drawing camless tool and the wire connector and wire drawing wire connected thereto from the second camless fitting while the semi-metal car is being towed; 9) step 9 of connecting the slack adjustment fitting connected to the ground side of the four-conductor yoke to the second camless fitting; 10) a step of tightening the power transmission line connected to the ground side of the four-conductor yoke via the connected slack adjustment fitting, and removing the tightening tool connected in step 7 and the semi-metal wheel connected thereto from the second camless fitting connected to the power transmission line; A wire tensioning method comprising the steps of:

2. A connecting metal fitting used in the wire tensioning method according to claim 1, the kamaress tool for wire drawing that can be removed from the third connecting shaft of the second kamaress fitting during wire tightening after completion of the wire drawing work; The four-conductor yoke is connected to an insulator string supported by a steel tower; the slack adjustment fitting, the longitudinal end of which is rotatably connected to the four conductor yoke via a connecting fitting a; the second camless fitting rotatably connected to the other end of the slack adjustment fitting via a connecting fitting b and a connecting fitting c; a first kamaress fitting rotatably connected to the second kamaress fitting by a second connecting shaft; Two of the semi-metal wheels are rotatably connected to the four-conductor yoke or the wire tightening tool via a connecting metal fitting d; a tensioning tool having a longitudinal end rotatably connected to the connecting fitting d of the semi-metal wheel and another end connected to the second camless fitting through a tensioning tool attachment hole; These connecting fittings consist of:

3. 3. The metal connector set forth in claim 2, wherein the wire tightening tool is bent perpendicularly to the semi-metal wheel and the metal connector d at the connection point.

4. 4. The connectors according to claim 2 or 3, wherein the replacement connectors for the wire drawing camless tool are selected from the group consisting of right angle clevises, right angle clevis links, right angle links, angle clevises, angle clevis links, and angle links.

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