Live wire vibration tool

Abstract

Provided is a live wire distributing tool with which it is possible to stabilize an electrically interrupted distributed state, without being impacted by rain water.　A live wire distributing tool 1 comprises a wire stretcher 2 and two wire grippers 4. The wire stretcher 2 has an expanding and contracting mechanism due to an expanding and contracting cylinder structure for accommodating a rod 2b in a cylindrical main body 2a. A grasping part 10 formed as one piece with a wire holding tool 6 that holds an electrical wire 200 is provided on the rod 2b that constitutes the wire stretcher 2. Another grasping part 12 is provided on the side having the cylindrical main body 2a. An insulator 8 for dividing rain water that travels on the rod 2b is provided near the grasping part 10.

Description

[Technical field]

[0001] The present invention relates to a live-line sorting tool used for live-line sorting work in uninterruptible power line installation and maintenance work. [Background technology]

[0002] In the cutting of electric wires during uninterruptible power construction, live line sorting tools are used to prevent the ends of the cut wires from touching each other. Most live line sorting tools are equipped with a wire gripper that grips the electric wires, a wire tensioner that pulls the gripped electric wires in, and a wire holder that holds the wires that have been pulled in and bent or that have become unstable after being cut.

[0003] 6 is a diagram showing a conventional live line sorting tool 100. The live line sorting tool 100 is arranged so that a portion of an electric wire 200 that needs to be cut is included between two wire grippers 102. Then, a wire tensioner 101 to which the two wire grippers 102 are connected is contracted, thereby forming a bend in the electric wire 200. The electric wire 200 is cut in the bent state, and the cut ends are kept apart by two wire holders 103 so that they do not touch each other.

[0004] By using such a live line sorting tool 100, it is possible to prevent electrical accidents during uninterruptible power outage construction work and to carry out the work safely.

[0005] The above-mentioned live line sorting tool is described in Patent Document 1. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2008-206254 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, even when a live line sorting tool is used, when working in rainy weather, there is a risk that a live electrical state will be created due to rainwater running over the wire tensioner.

[0008] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a live-line sorting tool that is not affected by rainwater and can stably maintain an electrically cut-off sorting state. [Means for solving the problem]

[0009] In order to achieve the above object, the live line sorting tool of the present invention is a live line sorting tool used in an uninterruptible power supply construction method, and includes a wire tensioner having an expandable cylinder structure in which a rod body is housed inside a cylindrical body, two wire grippers connected to both ends of the wire tensioner and gripping electric wires, a wire holder attached to the wire tensioner and holding the bent electric wire, and a wire tensioner attached at intervals on the rod body. A groove is formed along the outer circumference. The water-repellent portion is provided between the two flanges on the rod body. Effect of the Invention

[0010] As described above, according to the live line sorting tool of the present invention, the flow of rainwater is blocked by the two water-cutting flanges provided on the rod body constituting the extension mechanism of the wire tensioner. As a result, even when working in rainy weather, the flow of rainwater can be blocked on the rod body to prevent current flow between the sorted electric wires. In addition, since a water-repellent portion is provided between the two flanges, it is possible to prevent raindrops that directly fall on the wires from connecting with each other. This makes it possible to more reliably maintain the insulation state of the area formed between the two flanges. [Brief description of the drawings]

[0011] [Figure 1] 1 is a front view of a live line sorting tool according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing a state in which the live line sorting tool of FIG. 1 is used. [Diagram 3] Showing the insulator on the wire tensioner, (a) is a front view, and (b) is a perspective view. [Figure 4] 1A and 1B show a wire holder and a gripping portion on a rod body, in which (a) is a front view and (b) is a perspective view. [Diagram 5] 1A and 1B show a gripping portion on a cylindrical body, where (a) is a front view and (b) is a perspective view. [Figure 6] FIG. 1 is a diagram showing a conventional live line sorting tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A live line sorting tool according to an embodiment of the present invention will now be described with reference to the drawings.

[0013] 1 is a front view of a live line sorting tool 1 according to an embodiment of the present invention, in which an electric wire 200 to be worked on is indicated by a dotted line.

[0014] The wire tensioner 2 has an expandable cylinder structure composed of a cylindrical body 2a and a rod body 2b housed in the cylindrical body 2a. Wire grippers 4 that grip the electric wire 200 are connected to both ends of the wire tensioner 2.

[0015] The wire gripper 4 is structured so that the gripping force of the electric wire 200 increases as the wire gripper 4 is pulled toward the wire tensioner 2 side.

[0016] An electric wire holder 6 for holding the electric wire 200 is attached to each of the cylindrical body 2a and rod body 2b of the wire tensioner 2. The electric wire holder 6 is used to stably hold the bent electric wire 200 before cutting and the cut ends of the electric wire 200 after cutting. It is also used to separate the ends of the electric wire 200 after cutting. When the cut ends are separated from each other in opposite pole directions by the electric wire holder 6 around the cylindrical body 2a and rod body 2b of the wire tensioner 2, contact during work can be prevented, enabling safe work.

[0017] Moreover, gripping parts 10, 12 are provided on the cylindrical body 2a and rod body 2b of the wire tensioner 2, respectively. The gripping part 10 is provided on the rod body 2b at a position close to the side connected to the wire gripper 4, and the gripping part 12 is provided on the cylindrical body 2a at a position close to the side connected to the wire gripper 4. These gripping parts 10, 12 are structured to be easily gripped by a gripping tool such as pliers for remote operation (described later with reference to FIG. 2). The gripping part 10 is structured so that it can be integrally formed with the wire holder 6.

[0018] Fig. 2 is a perspective view showing a state in which the live line sorting tool 1 of Fig. 1 is used. Unlike Fig. 1, the electric wire 200 is shown by a solid line, and a gripping tool 201 used to support the live line sorting tool 1 is also shown. Fig. 2 shows a state in which the two gripping tools 201 grip the gripping portions 10, 12, respectively, and the electric wire 200 is housed in the two electric wire holders 6. The two wire grippers 4 each grip the electric wire 200. A live line sorting operation using such a live line sorting tool 1 is as follows.

[0019] First, two workers support the live line sorting tool 1 with the gripping tool 201, and position the tool so that the electric wire 200 is accommodated in the electric wire holder 6. At this time, there is a method in which the electric wire 200 is simultaneously arranged to be accommodated in the wire grippers 4, or a method in which the electric wire 200 is first accommodated in the electric wire holder 6, and then the electric wire 200 is accommodated in each of the wire grippers 4.

[0020] Next, the wire tensioner 2 is contracted to pull the electric wire 200 gripped by the wire gripper 4 toward the center, forming a dip. At this time, the electric wire 200 is stably held by the electric wire holder 6.

[0021] The electric wire 200 with the bend thus formed is cut. At this time, there are a method of cutting the wire after stripping off the coating from the cut portion, and a method of stripping off the coating before reconnecting the wire after cutting. In the former case, a stripper capable of stripping off the coating from the center portion of the electric wire 200 is required. In the latter case, a stripper capable of stripping off the coating from the end portion is required.

[0022] The ends of the cut electric wires 200 are separated in a staggered state to opposite pole positions by rotating one of the electric wire holders 6 around the axis of the wire tensioner 2. By separating them in this manner, accidents caused by current flow can be prevented and the work can be performed safely. Here, when rotating the electric wire holder 6 around the axis of the wire tensioner 2, the work can be performed stably by holding the holding parts 10, 12 with the holding tool 201.

[0023] After the work, when connecting the ends of the cut electric wires 200, the above steps are carried out in reverse.

[0024] First, one of the wire holders 6 holding the end of the wire 200 is rotated around the axis of the wire tensioner 2 to return to its original position.

[0025] Then, the ends of the wires 200 from which the coating has been stripped are connected together, and the coating is repaired. A sleeve cover that can be attached by shrinking is often used for repairing the coating.

[0026] After the connection is made in this manner, the expansion mechanism consisting of the cylindrical body 2a and rod body 2b of the wire tensioner 2 is gradually expanded until the tension in the electric wire 200 is restored.

[0027] After the tension in the electric wire 200 is released, the wire gripper 4 releases the wire, and the electric wire holder 6 is removed from the electric wire 200.

[0028] Next, the configuration of each part will be described.

[0029] Fig. 3 shows the insulator 8 on the wire tensioner 2. Fig. 3(a) is a view from the front side of the insulator 8, and Fig. 3(b) is a perspective view. In Fig. 3(a), for ease of explanation, the water-repellent portion 8b that has been subjected to a water-repellent treatment is distinguished from the rest by applying diagonal lines.

[0030] The two flanges 8a constituting the insulator 8 are arranged opposite to each other with a water-repellent portion 8b sandwiched between them. Each flange 8b has a groove formed on its outer periphery, and is structured to prevent rainwater flowing down the rod 2b of the tensioner 2 (see FIG. 1) from passing through the inner water-repellent portion 8b. That is, rainwater spreading down the outer surface of the flange 8a from the rod 2b gathers in the groove formed on the outer periphery of the flange 8a, and is structured to easily drip downward. In addition to the configuration of the flange 8a, the insulator 8 according to this embodiment is provided with a water-repellent portion 8b on its inner side. The water-repellent portion 8b prevents raindrops from spreading over a wide area, so that it is possible to prevent rainwater from continuously connecting between the two flanges 8a. In this way, the transmission of rainwater is prevented doubly, so that it is possible to reliably prevent electricity from passing on both sides of the tensioner 2 even when working in rainy weather.

[0031] FIG. 4 shows the electric wire holder 6 and the gripping part 10 on the rod body 2b of the wire tensioner 2 (see FIG. 1). FIG. 4(a) is a front view, and FIG. 4(b) is a perspective view. As described above, the gripping part 10 has an electric wire holder attachment groove 10b formed therein so that the electric wire holder 6 can be attached integrally thereto. In addition to the two flanges 10a forming the electric wire holder attachment groove 10b, a flange 10a is also formed on the end part on the side to be gripped by a gripping tool or the like. By providing these flanges 10a, the electric wire holder 6 is stabilized against shaking in the direction of extension and contraction of the wire tensioner 2. In addition, when gripping with the gripping tool 201 shown in FIG. 2 or the like, even if the gripping tool 201 is tilted with respect to the wire tensioner 2, the movement is restricted by the flange 10a. This allows the gripping tool 201 to be prevented from coming off the gripping part 10, and the work can be performed safely. In remote control, the gripping sensation is not easily conveyed from the gripping tool 201 to the operator, so there is a risk that the gripping force may be partially lost without the operator's intention. However, even in such a case, the flange 10a serves to prevent slippage and falling off, ensuring safety.

[0032] As shown in FIG. 4(b), the electric wire holder 6 can be opened widely to the side by the closing tool 7 that is provided so as to be slidable up and down. Since an eye nut 7a is provided above the closing tool 7, it can be easily opened and closed by hooking it onto a remote control tool. The closing tool 7 has a through hole 7b that extends in the longitudinal direction. The guide pin 6a of the electric wire holder 6 is disposed to pass through the through hole 7b, and holds the closing tool 7 slidably and prevents the closing tool 7 from falling off. The sliding direction of the closing tool 7 is stabilized by the guide pin 6a and the guide groove 6b formed below the guide pin 6a. The lower end of the closing tool 7 is fixed by a fixing pin 6c, and the closed state is stabilized. The fixing pin 6c may be a screw that tightens the lower end of the closing tool 7, or may be a plunger that applies pressure to the lower end of the closing tool 7.

[0033] Fig. 5 shows the gripping portion 12 on the cylindrical body 2a of the wire tensioner 2 (see Fig. 1). Fig. 5(a) is a front view, and Fig. 5(b) is a perspective view. For ease of explanation, components other than the gripping portion 12 are indicated by dotted lines to distinguish them.

[0034] The gripping portion 12 is formed in a cylindrical shape that covers the cylindrical main body 2a. The gripping portion 12 is also formed with a flange 12a, similar to the gripping portion 10 shown in Fig. 4. Since it is configured in this manner, even if the gripping tool 201 slips when gripping with the gripping tool 201 as shown in Fig. 1, the flange 12a regulates it at the end, so that the operation is stable.

[0035] The configuration described above is one example of the present invention, and the following modifications are also included.

[0036] (1) In the above embodiment, a groove is formed on the outer periphery of the flange portion 8a that constitutes the insulator 8. However, this groove is not an essential structure.

[0037] (2) In the above embodiment, the flange 8a and the water-repellent portion 8b constituting the insulator 8 are arranged to be in contact with each other. However, the flange 8a and the water-repellent portion 8b do not have to be integrally formed. As long as the water-repellent portion 8b is arranged between at least a pair of flanges 8a, a gap may be formed between the flange 8a and the water-repellent portion 8b.

[0038] (3) In the above embodiment, the closing tool 7 of the electric wire holder 6 is opened by sliding it upward. However, the closing tool 7 may be opened by sliding it downward. Also, instead of sliding, the closing tool 7 may be rotated around the guide pin 6a. [Explanation of symbols]

[0039] 1 Live wire sorting tool 2 Wire tensioner 2a Cylindrical body 2b Rod 4 Wire gripper 6 Wire holder 6a Guide pin 6b Guide groove 6c Fixing pin 7 Closure 7a Ainat 7b Through hole 8 Insulator 8a Tsubabe 8b Water-repellent part 10 Gripping part 10a flange 10b Cable holder mounting groove 12 Grip part 12a Flange 100 Live line sorting tool (conventional) 101 Wire tensioner (conventional) 102 Wire gripper (conventional) 103 Wire holder (conventional) 200 Electric wire 201 Gripping tool

Claims

[Claim 1] A live line sorting tool used in an uninterruptible power supply construction method, A wire tensioner having an expandable cylinder structure in which a rod body is housed inside a cylindrical body; Two wire grippers connected to both ends of the wire tensioner, respectively, for gripping the electric wire; a wire holder attached to the wire tensioner and holding the bent wire; Two drainage flanges attached to the rod at intervals and having grooves formed along their outer circumferences; a water-repellent portion provided between the two flange portions on the rod body; A live line sorting tool comprising:

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