JP5694438B2 - Underline fixture - Google Patents

Description

  The present invention relates to an underline fixture used when connecting an underline (high-voltage underline) to a high-voltage line (high-voltage overhead electric wire) installed at a high place.

  In order to prevent troubles such as disconnection of the underline connected to the high-voltage line, it is necessary to prevent excessive tension from being applied to the connection part of the underline. As a method for preventing excessive tension from being applied to the connecting portion of the underline, there is a method for supporting and fixing the underline using an insulator. Various support members and methods for supporting and fixing the underline to the insulator have been developed so far. For example, when there is a restriction on the direction of the underline or the insulator, the underline is provided via a support member having an angle. A technique for supporting and fixing the insulator to the insulator has been proposed (see, for example, Patent Document 1).

  In addition, as a method of processing the underline without using an insulator, it is added to the connection part of the draw line by wrapping the draw line around the high voltage line with an indirect hot wire tool such as Yatco near the connection part with the high voltage line. A method of reducing the tension is adopted.

  At this time, in order to prevent disconnection due to vibration and stress concentration at the hanging part of the underline, a grip part for fixing the underline and the high-voltage line is provided, and the holding for the high-pressure line is made of an elastic body between the two grip parts. There is a tool (for example, refer to Patent Document 2). Thus, by holding the underline and the high-voltage line, it is possible to absorb the vibration of the entire underline and prevent disconnection.

  In addition, it is provided at the tip of the underline, which is a connection part, so that the connection between the underline and the high-voltage line can be easily performed at high places. Various underline connectors have been developed (see, for example, Patent Document 3).

JP 2001-78339 A JP 2009-296720 A JP 2013-41732 A

  The method of using an insulator for the processing of the underline as in the invention described in Patent Document 1 requires a cost for installing the insulator, and requires a large amount of work when supporting and fixing the underline to the insulator, resulting in high costs.

  Further, in the method of hanging the underline around the high-voltage line as in the invention described in Patent Document 2, it is necessary to be skilled in the operation of the indirect hot wire tool such as Yatco, and depending on the installation position of the underline and the high-voltage line, there is a risk of short circuit. However, when the high-voltage lines are in a vertical arrangement, there are problems such as the fact that an operator approaches the high-voltage lines and a lot of armor is required, and the fixing of the underline is uncertain.

  In addition, when using the underline connector described in Patent Document 3, it is necessary to adjust the position of the underline so that the underline connector sandwiches the connected portion of the high-voltage line. It is necessary to carry out the work repeatedly until the position is matched, and the burden on the operator is great.

  An object of the present invention is to provide an underline fixing tool capable of easily and safely connecting an underline to a high voltage line installed at a high place.

The present invention relates to a drawing line fixture used when connecting a drawing line to a high voltage line installed at a high place, a drawing line fixing part fixed to the drawing line, and a high voltage fixed to the high voltage line. The underline fixing part can be fixed to the underline by hand on the ground, and the underline fixing part is connected to the high-voltage line when the underline is connected to the high-voltage line. Support means for supporting the underline so as to reduce the tension applied to the connecting portion, which is the tip of the underline, can be fixed without hanging the underline around the high-voltage line, and the high-voltage line fixing part is , Having a tool hooking means for hooking an indirect hot wire tool at the tip, and being fixed to the high voltage line by operating the tool hooking means with the indirect hot wire tool in a state of being temporarily fixed to the high voltage line It is an underline fixture characterized in that it is possible .

According to the present invention, the underline fixing part is fixed to the underline, and the underline fixing part can be fixed to the underline manually on the ground, so that the amount of work at a high place can be reduced. . Also, the underline fixing part has support means to support the underline so that the tension applied to the connection part that is the tip of the underline can be reduced when the underline is connected, and it can be fixed without hanging the underline around the high-voltage line Therefore, it is possible to work easily and safely.
According to the invention, the high-voltage wire fixing part has a tool hooking means for hooking the indirect hot wire tool at the tip, and hooks the indirect hot wire tool on the tool hooking means in a state of being temporarily fixed to the high-voltage wire. Since it can be fixed to a high-voltage wire by operation, it can be easily performed using a conventional indirect hot wire tool.

  Further, in the present invention, there is further provided hooking means for slidably hooking on the high-voltage line, and a pull-down connector for sandwiching the high-voltage line is provided at a connecting portion which is a tip of the pull-down line, and the hooking means The holding position of the underline connector can be adjusted by sliding on the high voltage line while being hooked on the high voltage line.

  According to the present invention, the hooking means that is slidably hooked on the high-voltage line is provided, and the holding position of the underline connector can be adjusted by sliding on the high-voltage line, so that the fixed position of the underline can be easily determined.

  In the present invention, the high-voltage wire fixing portion is made of a rod-shaped member or a tubular member, has a spiral shape, and has an inner diameter of the spiral that is greater than the diameter of the high-pressure wire so as to be wound around the high-pressure wire.

  In the present invention, the number of spiral turns of the high-voltage wire fixing portion is a minimum number of turns that can be fixed to the high-voltage wire using the indirect hot wire tool.

  According to the present invention, the high-voltage wire fixing portion is made of a rod-like member or a tubular member, has a spiral shape, and the inner diameter of the spiral is equal to or larger than the diameter of the high-pressure wire so that it can be wound around the high-pressure wire. Since it is the minimum number of turns that can be fixed to a high-voltage wire using a tool, it can be easily fixed to a high-voltage wire using an indirect hot wire tool. Moreover, since it is wound by the spiral shape and fixed to the high-voltage line, the fixing is reliable.

  Further, in the present invention, the underline fixing portion is made of a rod-like member or a tubular member and has a spiral shape, and the inner diameter of the spiral is greater than or equal to the diameter of the underline so as to be wound around the underline, and the spiral shape further The supporting means for supporting the underline, wherein the high-voltage line fixing portion has a smaller number of spiral turns than a number of spiral turns of the underline fixing portion, and / or a pitch of the spiral is the underline fixing portion. It is characterized in that it is longer than the helical pitch.

  According to the present invention, the underline fixing portion has a spiral shape, and the spiral shape fixes the underline and the support means for supporting the underline so as to reduce the tension applied to the connecting portion that is the tip of the underline. Since it is also used, it is very compact. In addition, the high-voltage wire fixing part has a smaller number of spiral turns than the number of turns of the underline fixing part and / or a longer pitch of the helix than that of the underline fixing part. Work with tools is easy.

  Moreover, in this invention, the said underline fixing | fixed part and the said high voltage | pressure line fixing | fixed part are the one sides formed integrally, and are arrange | positioned at right angles.

  According to the present invention, since the underline fixing portion and the high-voltage wire fixing portion are integrally formed, manufacturing is easy and the size is very compact.

  According to the present invention, it is possible to easily and safely connect and fix the underline to the high-voltage line installed at a high place, and to securely fix the underline and the high-voltage line. . The underline fixing tool of the present invention can be applied both in the case where the high voltage lines are in a horizontal arrangement and in the case of a vertical arrangement.

It is sectional drawing cut | disconnected by the figure and cutting line AA which show the state which fixed the underline 81 to the high voltage | pressure line 91 with the underline fixing tool 1 which is 1st Embodiment of this invention. It is a front view of the underline fixing tool 1 of FIG. It is a figure which shows the state which fixed the underline 81 to the underline fixing tool 1 of FIG. FIG. 2 is a view showing a state where the underline fixture 1 of FIG. FIG. 2 is a view showing a state in which the underline fixture 1 of FIG. FIG. 2 is a view showing a state in which the underline fixture 1 of FIG. 1 is fixed to a high voltage line 91. It is a figure which shows the state which fixed the underline 81 to the high voltage line 91 with the underline fixing tool 2 which is 2nd Embodiment of this invention.

  FIG. 1 is a diagram showing a state in which a drawing line 81 is fixed to a high voltage line 91 by the drawing line fixture 1 according to the first embodiment of the present invention, and a sectional view cut along a cutting line AA. FIG. 2 is a front view of the underline fixture 1. FIG. 3 is a view showing a state in which the underline 81 is fixed to the underline fixing tool 1. FIG. 4 is a view showing a state in which the underline fixture 1 is hooked on the high-voltage line 91. FIG. 5 is a view showing a state in which the underline fixture 1 is temporarily fixed to the high voltage line 91. FIG. 6 is a view showing a state in which the underline fixture 1 is fixed to the high voltage line 91.

  The underline fixing tool 1 according to the first embodiment of the present invention includes an underline fixing part 11 fixed to the underline 81, a high voltage line fixing part 31 fixed to the high voltage line 91, and an indirect hot wire tool 72. It has a tool hooking means 41 for hooking and a hooking means 51 slidably hooked on the high-voltage line 91. When connecting the pull-down line 81 to the high-voltage line 91 installed at a high place, the pull-down line 81 is connected to the high-voltage line 91. Fix it.

  The underline fixing tool 1 is a bar-shaped member that is integrally formed and bent at a right angle. One side is the underline fixing part 11 across the bent part, and the other side is the high-voltage line fixing part 31. The underline fixing tool 1 includes a tool hooking means 41 at the tip of the high voltage line fixing portion 31 and a hooking means 51 at the bent portion. The underline fixture 1 may be formed of a tubular member.

  The material of the underline fixture 1 can be suitably used, for example, a metal having an insulating film applied thereto, but is not limited to a specific material, and may be a resin having insulating performance. . Moreover, it is preferable to have a strength that does not easily deform when working with the indirect hot wire tool 72. Furthermore, since it is used outdoors for a long period of time, it is preferable to use a material that does not easily deteriorate even when exposed to wind and rain or sunlight.

  The underline fixing part 11 has a spiral shape, is wound around the underline 81, and is supported and fixed by a frictional force. The inner diameter of the spiral of the underline fixing portion 11 is set to be equal to or larger than the diameter of the underline 81 so that the underline 81 can be wound. The length of the underline fixing portion 11 may be long enough to be supported and fixed by frictional force when wound around the underline 81, and need not be longer than necessary. For example, the length is about 100 mm.

  Further, the pitch and number of turns of the spiral of the underline fixing portion 11 are not limited to specific ones. Since the underline fixing part 11 can be wound around the underline 81 manually, the workability is not significantly reduced even if the helical pitch is short and the number of windings is large.

  The root portion 21 of the spiral of the underline fixing portion 11 serves as a support unit that supports the tension of the underline 81. When the underline 81 and the high-voltage line 91 are connected without supporting means, the weight of the underline 81 is applied to the connecting portion 82 of the underline 81, the connected portion 92 of the high-voltage line 91, and the underline connector 83 described later. The part may be pulled, causing troubles such as disconnection. In order to prevent this, a supporting means is required in the vicinity of the connecting portion 82 to support the underline 81 and prevent tension from being applied to the connecting portion 82 of the underline 81 and the like. In the present embodiment, the spiral root portion 21 of the underline fixing portion 11 serves as a support means. In addition to the weight of the underline 81, the support means needs to have a strength capable of supporting a load when the underline 81 vibrates due to wind or the like.

  The high-voltage wire fixing portion 31 is spiral like the underline fixing portion 11, is wound around the high-voltage wire 91, and is supported and fixed by a frictional force. The inner diameter of the spiral of the high-voltage wire fixing portion 31 is set to be equal to or larger than the diameter of the high-voltage wire 91 so that it can be wound around the high-voltage wire 91 in the same manner as the inner diameter of the spiral of the pull-down wire fixing portion 11. The length of the high-voltage wire fixing portion 31 may be long enough to be supported and fixed by frictional force when wound around the high-voltage wire 91 and should not be longer than necessary. Since the high-voltage wire fixing part 31 is wound around the high-voltage wire 91 using an indirect hot wire tool 72 such as a bind hitter at a high place, unlike the draw-line fixing part 11, if it is made longer than necessary, the winding operation is difficult. . For example, the length is about 100 mm.

  In addition, since there are several types of high-voltage wires 91 having different diameters, a plurality of types of pull-down wire fixtures 1 having different inner diameters of the spirals of the high-voltage wire fixing portion 31 in accordance with the diameter of the high-voltage wire 91 installed. If prepared, the underline 81 and the high voltage line 91 can be reliably fixed, which is preferable. In the conventional method in which the underline 81 is wound around the high-voltage line 91 and fixed, the underline 81 and the high-voltage line 91 are not completely fixed. In consideration of this, also in the present embodiment, one pull-down wire fixing tool 1 in which the inner diameter of the spiral is matched with the high-voltage wire 91 having the largest diameter may be prepared and used for the high-voltage wire 91 having the small diameter.

  The high-voltage wire fixing portion 31 is wound around the high-voltage wire 91 using an indirect hot wire tool 72 such as a bind hitter at a high place. For this reason, if the helical pitch of the high-voltage wire fixing portion 31 is too short, workability at the time of winding with the indirect hot wire tool 72 is greatly reduced, so that it can be fixed to the high voltage wire 91 and is wound with the indirect hot wire tool 72. Is set to an easy length. Similarly, if the number of spiral turns of the high-voltage wire fixing part 31 is too large, the workability is greatly reduced. Therefore, the number of turns that can be fixed to the high-voltage wire 91 and can be easily wound by the indirect hot wire tool 72, preferably The minimum number of turns that can be fixed to the high-voltage line 91 is set. Such a winding number is preferably about two times.

  The tool hooking means 41 is provided at the tip of the high-voltage wire fixing portion 31 and is formed in a ring shape so that the indirect hot wire tool 72 can be hooked. The shape of the tool hooking means 41 is not limited to a specific shape, and may be formed in, for example, a U shape, and can be appropriately determined according to the type of the indirect live tool used.

  The hooking means 51 is a U-shaped hook, and can be hooked on the high-voltage line 91 so as to be slidable from above. The hooking means 51 is not limited to a specific one, and for example, a carabiner, an eggplant or the like may be used as long as it can be slidably hooked on the high-voltage line 91. When ring-shaped hooking means (not shown) such as carabiner or eggplant is used, it takes some time to hook, but it is possible to prevent the hooking means from coming off.

  The hooking means 51 is arranged so that the central axis of the high-voltage line 91 and the spiral of the high-voltage line fixing part 31 when the underline fixing tool 1 is hooked on the high-voltage line 91 so that the high-voltage line fixing part 31 can be easily fixed to the high-voltage line 91. It is preferable that it is provided so that the central axis of the two coincides. However, the present invention is not limited to this, and it is only necessary that the central axis of the high-voltage line 91 and the central axis of the spiral of the high-voltage line fixing portion 31 be provided so as to coincide with each other during temporary fixing, which will be described later.

  The underline 81 is connected to the high-voltage line 91 by providing the underline connector 83 at the tip connection part 82 and holding the connected part 92 from which the insulation coating of the high-voltage line 91 is peeled by the underline connector 83. .

  The underline connector 83 is a clip-like conductive connector having a holding portion 84, and the connected portion 92 of the high voltage line 91 is held by the holding portion 84 in a state where the connecting portion 82 of the underline 81 is connected. The underline 81 and the high voltage line 91 are electrically connected. As the underline connector 83, for example, the underline connector described in Japanese Patent Application Laid-Open No. 2013-41732 filed by the present applicant can be used.

  Next, the operation of connecting and fixing the underline 81 to the high voltage line 91 using the underline fixing tool 1 will be described. First, the underline fixing part 11 is wound around and fixed to the underline 81 manually (see FIG. 3). At this time, the length of the underline 81 from the spiral root 21 of the underline fixing part 11 to the underline connector 83 may be determined by appropriately adjusting, but if it is too long, the connecting portion 82 of the underline 81, the underline Since the tension applied to the connector 83 and the connected portion 92 of the high-voltage line 92 increases, it should not be unnecessarily long.

  After fixing the underline 81, the underline fixing tool 1 is gripped by using an indirect live tool (not shown) such as Yatco, and the hook 51 is hooked on the high voltage line 91 installed at a high place. After the hook portion 51 is hooked on the high-voltage line 91, the pull-line fixing tool 1 is slid to adjust the position so that the underline connector 83 can hold the connected portion 92 of the high-voltage line 91 (see FIG. 4). ).

  After the position of the underline fixing tool 1 is determined, a temporary fixing tool 71 such as a stray link tong is used to temporarily fix the vicinity of the root of the high voltage line fixing part 31 to the high voltage line 91 (see FIG. 5). At this time, temporary fixing is performed so that the central axis of the spiral of the high-voltage line fixing portion 31 coincides with the central axis of the high-voltage line 91.

  After temporarily fastening the underline fixture 1, the tip of the indirect live tool 72 is hooked on the tool catching means 41 using an indirect live tool 72 such as a bind hammer, Yatco or tie stick hammer, and temporarily fixed. The high-voltage wire fixing portion 31 is wound around and fixed to the high-voltage wire 91 with the base of the high-voltage wire fixing portion 31 as a fulcrum (see FIG. 6). At this time, the high-voltage wire fixing portion 31 is not wound while being deformed, but the high-voltage wire fixing portion 31 is wound along the spiral, so that the work by the indirect hot wire tool 72 is very easy.

  After fixing the high-voltage wire fixing portion 31 to the high-voltage wire 91, an indirect hot wire tool (not shown) such as Yatco is used to hold the pull-down connector 83 and widen the holding portion 84, and the holding portion 84 increases the pressure. The connected portion 92 of the wire 91 is clamped (see FIG. 1). At this time, since the underline 81 is supported by the spiral root portion 21 of the underline fixing part 11 which is a support means, the connection part 82 of the underline 81, the underline connector 83, and the connected part 92 of the high voltage line 92 are connected. The applied tension is reduced. For this reason, the underline 81 can be fixed to the high-voltage line 91 without hanging the underline 81 around the high-voltage line 91 as in the prior art.

  As described above, when the underline fixing tool 1 according to the first embodiment of the present invention is used, the underline 81 can be fixed without being hung around the high-voltage line 91, so that the work is easy and safe. is there. Further, the underline 81 and the high-voltage line 91 can be reliably fixed by the underline fixing part 11 and the high-voltage line fixing part 31. Furthermore, since the underline 81 can be fixed manually on the ground, the amount of work using an indirect hot wire tool at a high place can be reduced.

  Even in the case where the high-voltage lines 91 are arranged vertically, there is no need to hang the underline 81 around the high-voltage line 91, and the underline fixture 1 is very compact, so that the danger of short circuit is low and the work can be performed safely. This reduces the burden on the operator.

  FIG. 7 is a diagram showing a state in which the underline 81 is fixed to the high-voltage line 91 by the underline fixing tool 2 according to the second embodiment of the present invention. The same components as those of the underline fixture 1 shown in the first embodiment are denoted by the same reference numerals and description thereof is omitted. The underline fixing tool 2 of the second embodiment has the same basic configuration as the underline fixing tool 1 of the first embodiment, but the angles of the underline fixing part 12 and the high-voltage line fixing part 31 are different.

  The underline fixing tool 2 of the second embodiment is not bent at a right angle, and the underline fixing part 12 and the high-voltage line fixing part 31 are horizontally arranged. By arranging in this way, it is possible to further reduce the risk of the underline fixture 2 coming into contact with the high-voltage line 91, particularly when the high-voltage lines 91 are vertically arranged at narrow intervals.

  As mentioned above, although the underline fixing tool of this invention was demonstrated using the underline fixing tool of 1st, 2nd embodiment, the underline fixing tool of this invention is not limited to the said embodiment. The underline fixing part 1 is fixed to the underline 81 by a spiral, but is not limited to this, and for example, the underline fixing unit 1 is bound and fixed to the underline 81 using a plurality of bind lines (not shown). It may be. At this time, the support means for supporting the underline 81 and preventing tension from being applied to the connecting portion 82 of the underline 81 is the bind line closest to the connecting portion 82 of the underline 81. Since the underline fixing portion 1 can be fixed to the underline 81 manually, the workability is not significantly reduced even if the operation is somewhat complicated.

  In addition, the underline fixtures 1 and 2 of the first and second embodiments include the hook-type hooking means 51, but instead of the hook-type hooking means 51, a part of the spiral shape of the high-voltage line fixing portion 31 is used. The hooking means 51 may be used. Further, in the rod-like members (tubular members) constituting the underline fixing portions 11 and 12, the boundary between the underline fixing portions 11 and 12 and the high-voltage line fixing portion 31 may be formed into a hook shape, and this may be used as the hooking means 51.

  The arrangement (angle) of the underline fixing part 11 and the high-voltage line fixing part 31 is not limited to a specific angle, and can be determined as appropriate depending on the construction situation of the high-voltage line 91 and the like.

  The fixing operation of the high-voltage wire fixing portion 31 was performed using the indirect hot wire tool 72, but is not limited to this. It may be fixed to the line 91.

DESCRIPTION OF SYMBOLS 1, 2, Drawing line fixing tool 11, 12 Drawing line fixing part 21 Spiral root part 31 High voltage line fixing part 41 Tool hooking means 51 Hooking means 71 Indirect hot wire tool 81 Drawing line 82 Connection part 83 Pulling line connector 91 High voltage line 92 Connected part

Claims (6)

A drawing wire fixing tool used when connecting a drawing wire to a high voltage wire installed at a high place,
A underline fixing part fixed to the underline, and a high-voltage line fixing part fixed to the high-voltage line,
The underline fixing portion can be fixed to the underline manually on the ground, and the underline fixing portion is a connection portion that is a tip of the underline when the underline is connected to the high-voltage line. Support means for supporting the underline so as to reduce the tension applied to the underline , and can be fixed without hanging the underline around the high-pressure line ,
The high-voltage wire fixing portion has a tool hooking means for hooking an indirect hot wire tool at a tip, and is operated by hooking the indirect hot wire tool on the tool hooking means in a state of being temporarily fixed to the high-voltage wire. A pull-down wire fixing tool that can be fixed to the high-voltage wire.   Furthermore, it has a hooking means for slidably hooking on the high-voltage line, and a pull-down line connector for holding the high-voltage line is provided at a connecting portion which is a tip of the pull-down line, and is hooked on the high-voltage line by the hooking means. The underline fixing tool according to claim 1, wherein the holding position of the underline connector can be adjusted by sliding the high voltage line in a state of being held. The high-voltage lines fixing portion is made rod-like member or tubular member, a spiral shape, to claim 1 or 2 the inner diameter of the can to spiral wound around the high voltage lines is characterized in that the at high voltage cable having a diameter of more than The underline fixture described. The underline fixture according to claim 3 , wherein the number of spiral turns of the high-voltage wire fixing part is a minimum number of turns that can be fixed to the high-voltage wire using the indirect hot wire tool. The underline fixing portion is made of a rod-like member or a tubular member, has a spiral shape, and an inner diameter of the helix is larger than a diameter of the underline so as to be wound around the underline, and the spiral shape supports the underline. The support means
The high-voltage wire fixing part is characterized in that the number of spiral turns is smaller than the number of spiral turns of the underline fixing part, and / or the spiral pitch is longer than the pitch of the spiral of the underline fixing part. The underline fixture according to claim 3 or 4 . Wherein A the high voltage line fixing part and cuts wire fixing portion, a side between which is integrally formed, pull according to claim 1, any one of 5, characterized in that it is arranged at right angles Underline fixture.

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