JP2017050988A - Insulation protector for indirect hot-line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation protector for indirect hot-line enabling work of a portion covered with a protective sheet without removing the protective sheet from an electric wire.SOLUTION: An insulation protector 1 for indirect hot-line includes: a pair of clips 10, 10 which has a pair of gripping arms 12 for sandwiching an electric wire 100 and is arranged side by side along the electric wire 100; and a protective sheet 30 which is attached to the gripping arm 12 and covers both sides of a peripheral surface of the electric wire 100. The gripping arm 12 has an opening/closing parts 22, 22 capable of being opened and closed to the outside, respectively. The protective sheet 30 is attached to the opening/closing parts 22, 22. The opening/closing parts 22, 22 have a gripping part 22c capable of being gripped by an indirect hot-line tool.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an insulative live wire insulation protector used for preliminarily covering a required portion of an electric wire with a protective sheet in construction of a high voltage underline or an overhead electric wire.

  When constructing power distribution equipment such as overhead wires, the hot wire construction method is used in which the wires are energized. In such work, the required locations of the overhead wires are insulated. By covering with a protective sheet in advance, the occurrence of unexpected accidents such as an electric shock or short circuit caused by an operator during work is prevented.

  In addition, as this type of technology, there is a telescopic insulation protective device described in Patent Document 1. This telescopic insulation protector is provided with a pair of clips attached to a pull-down line extending from three overhead electric wires arranged side by side, and disposed between the pair of clips, and extendable along the pull-down line. It is comprised by the armor main body comprised with a non-insulating cloth etc., and the guide member which is provided between a pair of clips and guides the movement of the armor main body in the expansion-contraction direction. Thereby, the operation | work which adjusts the length of a armor main body is easily attained by moving a clip along an overhead electric wire.

JP 2014-57483 A

  However, when the portion of the electric wire covered with the protective sheet is a work location, for example, when performing an operation of cutting the pull-down line using an indirect hot wire tool, the work location remains covered with the protective sheet. Then, there is a risk of disturbing the work. For this reason, it is necessary to move the protective sheet or remove the protective equipment.

  An object of the present invention is to solve such problems and to provide an insulative protective device for indirect hot wires that enables the work of the portion covered with the protective sheet without removing the protective sheet from the electric wire. To do.

  In order to achieve the above object, the present invention has the following configuration.

  (1) having a pair of gripping arms that sandwich the electric wire, and having a pair of clips arranged side by side along the electric wire, and a protective sheet attached to the gripping arm and covering both sides of the peripheral surface of the electric wire, The gripping arm has an arm main body and an opening / closing part that is attached to the arm main body and can be opened / closed outward, the protective sheet is attached to the opening / closing part, and the opening / closing part can be gripped by an indirect hot wire tool. An insulative protective device for indirect live wires, characterized by having a gripping portion.

  According to (1), by opening and closing the opening / closing part, it is possible to open and close only the protective sheet alone while maintaining the state where the pair of gripping arms grips the electric wire. As a result, when performing work on the part covered with the protective sheet, by opening the opening and closing part and widening the protective sheet, a predetermined work can be performed on the electric wire part covered with the protective sheet without removing the protective sheet. It becomes possible to apply.

  (2) In (1), the opening / closing part of one clip is fixed to one end, the central part is passed through a hole formed in the protective sheet, and the other end is connected to the opening / closing part of the other clip. An insulative protective equipment for indirect live wires, further comprising a rod-like member to be fixed.

  According to (2), since the opening and closing parts of the pair of clips are connected by the bar-like member, the opening and closing parts of the pair of clips are interlocked with each other, and the opening and closing work using the indirect hot wire tool is performed. It becomes easy. Further, since the protective sheet is passed through the metal rod, the shape of the protective sheet is stabilized.

  (3) The indirect live wire insulation protector according to (1) or (2), further comprising magnets that can be attracted to and separated from each other at contact portions of the opening / closing portion and the arm body.

  According to (3), when performing a predetermined operation on the portion of the electric wire covered with the protective sheet, the opening / closing part can be opened, and otherwise, the opening / closing part can be kept closed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the insulation protector for indirect hot-wire which enabled the operation | work of the part covered with the protective sheet, without removing a protective sheet from an electric wire.

It is a figure which shows the structure of the insulation protector 1 for indirect hot wires in one Embodiment of this invention. 3 is an explanatory diagram showing a configuration of a clip 10. FIG. It is explanatory drawing which shows the state which opened the clip. It is explanatory drawing which shows the state which attached the clip 10 to the electric wire and opened the opening-and-closing part 22. FIG. It is explanatory drawing which shows the state which opened the opening-and-closing part 22 in FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration of an indirect live wire insulation protector 1 according to an embodiment of the present invention. The indirect live wire insulation protector 1 includes a pair of clips 10 and two insulating sheets. Protective sheets 30 and 30 and four metal bars 40 corresponding to rod-shaped members are provided.

  The pair of clips 10 sandwich the electric wire 100, respectively. The protective sheet 30 is made of a strip-like member having insulating properties. A plurality of eyelets 32 are formed on both sides of the protective sheet 30 along the longitudinal direction.

  The metal bar 40 is a long columnar member that supports the protective sheet 30 by connecting the two clips 10 and 10 arranged in parallel at a predetermined interval and passing through the eyelet 32 of the protective sheet 30.

FIG. 2 is an explanatory diagram showing the configuration of the clip 10. The clip 10 includes a pair of gripping arms 12 and 12, a rotating shaft 14, and a torsion spring (not shown).
The gripping arm 12 includes an arm main body 20, an opening / closing part 22, a rotating shaft 24, and sheet magnets 26 and 28.

  The arm body 20 includes a distal end portion 20a extending in the longitudinal direction and a proximal end portion 20b extending obliquely from the distal end portion 20a. The arm bodies 20 and 20 of the pair of gripping arms 12 and 12 are arranged such that the distal end portions 20a and 20a face each other and the proximal end portions 20b and 20b are separated from the distal end portions 20a and 20a. End portions on the proximal end portion 20 b side of the distal end portions 20 a of the arm main bodies 20 and 20 are connected to each other by the rotation shaft 14.

  Further, a winding portion of a torsion spring is inserted into the rotation shaft 14, and both end portions of the torsion spring are in contact with the base end portions 20b and 20b from the inside. Here, since the torsion spring always urges the proximal end portions 20b and 20b in the opening direction, the clip 10 is in contact with the distal end portions 20a and 20a of the arm main bodies 20 and 20 in a normal state. Yes. By moving the proximal end portions 20b and 20b in the closing direction, the distal end portions 20a and 20a are opened as shown in FIG. 3, and the electric wire 100 can be disposed inside the distal end portions 20a and 20a. Become.

  Moreover, the opposing part of the front-end | tip parts 20a and 20a in the arm main bodies 20 and 20 is formed in concave shape. For this reason, in the normal state, the tip portions of the tip portions 20a and 20a come into contact with each other, and a space slightly narrower than the electric wire 100 is formed between the tip portions 20a and 20a. Further, the arm body 20 is formed with a step portion 20c extending from the tip of the tip portion 20a through the outer surface to a part of the base end portion 20b, and the opening / closing portion 22 is disposed on the step portion 20c.

  The opening / closing part 22 includes a plate-like part 22a disposed on the step part 20c, and an L-shaped part 22b formed at the tip of the plate-like part 22a. The rear end portion of the plate-like portion 22 a is rotatably attached to the base end portion of the arm body 20 by a rotation shaft 24. Further, the axial direction of the rotating shaft 24 and the axial direction of the rotating shaft 14 are parallel to each other. For this reason, the opening / closing part 22 can be opened and closed along the opening / closing direction of the tip parts 20a, 20a. When the opening / closing part 22 is closed, the plate-like part 22a is accommodated in the step part 20c, and the L-shaped part 22b. Is disposed at the tip of the tip 20a.

  Here, sheet magnets 26 and 28 are fixed to contact portions between the stepped portion 20c and the plate-like portion 22a, respectively. For this reason, when the opening / closing part 22 is closed, the sheet magnet 26 on the arm body 20 side and the sheet magnet 28 on the opening / closing part 22 side are attracted to each other, so that the opening / closing part 22 is maintained closed. The

  Further, a gripping portion 22c that can be gripped by the indirect live tool extends from the L-shaped portion 22b. In a state in which the opening / closing sections 22 and 22 are closed in the pair of gripping arms 12 and 12, the gripping sections 22c and 22c are arranged to face each other with a predetermined interval as shown in FIG.

  Further, since the frictional resistance at the contact portion between the rear end of the opening / closing part 22 and the arm body 20 is high, the indirect live tool is moved away from the opening / closing part 22 after the opening / closing part 22 is opened by operating the indirect live tool. However, the opening / closing part 22 is maintained in an open state.

  Fixing portions 42 and 42 (see FIG. 1) for detachably fixing the end portion of the metal rod 40 are formed at the front end portion and the rear end portion on one side surface of the opening / closing portion 22.

  Then, one end portion of the metal rod 40 is fixed to the fixing portion of the opening / closing portion 22 of the one clip 10, and the center portion of the metal rod 40 is respectively formed in the eyelet 32 corresponding to the hole portion formed on both sides of the protective sheet 30. , And the other end of the metal rod 40 is fixed to the fixing portions 42 and 42 (see FIG. 1) of the opening / closing portion 22, whereby the indirect live-wire insulation protector 1 shown in FIG. 1 is configured. .

  Next, the attachment work to the electric wire 100 of the insulation protector 1 for indirect live wires is demonstrated. The operator operates two indirect hot-line tools generally called Yatco to sandwich the proximal end portions 20b and 20b of the pair of clips 10 and 10 and opens the distal end portions 20a and 20a as shown in FIG. . And an operator operates an indirect hot wire tool, passes the electric wire 100 between the front-end | tip parts 20a and 20a of a pair of opened clip 10,10, and also operates an indirect hot wire tool. The pair of clips 10 is attached to the electric wire 100 by releasing the pinching of the base end portions 20 b and 20 b of the clip 10. Here, the insulative live wire insulation protector 1 is obtained by attaching both end portions of the protective sheets 30 and 30 to the outer surfaces of the two clips 10 and 10 arranged in parallel at a predetermined interval. By attaching 10 to the electric wire 100, the protective sheets 30, 30 are arranged on both sides of the peripheral surface of the electric wire 100.

  When the portion of the electric wire 100 to which the indirect live wire insulation protector 1 is attached is a work target, for example, when the electric wire 100 is cut, the holding portion 22c is sandwiched with an indirect hot wire tool, and FIG. As shown in FIG. 5, by opening the opening / closing portion 22, the attracted sheet magnets 26 and 28 are separated from each other, and the protective sheets 30 and 30 are separated from the electric wire 100. At this time, since the opening / closing part 22 of the pair of clips 10, 10 is connected by the metal rod 40, when the opening / closing part 22 of one clip 10 rotates, the opening / closing part 22 of the other clip 10 is interlocked therewith. Turns and opens outward. Thereby, the lower part of the electric wire 100 is opened so that the electric wire 100 can be visually recognized, a work space is secured, and the electric wire 100 can be easily cut.

  When the electric wire 100 is cut, both sides of the cut portion of the electric wire 100 are sandwiched between the clips 10 and 10, and the clips 10 and 10 are connected by the metal rod 40. It is prevented from drooping downward.

  According to the present embodiment configured as described above, after attaching the indirect live wire insulation protector 1 to the electric wire 100, a predetermined operation is performed on the portion of the electric wire 100 covered with the protective sheets 30 and 30. At this time, by opening the opening / closing portions 22 and 22, it is possible to open only the protective sheets 30 and 30 alone while maintaining the state where the pair of gripping arms 12 and 12 grips the electric wire 100. This makes it possible to visually recognize the work location covered by the protection sheets 30 and 30 and secure a work space, and perform a predetermined operation on the portion covered by the protection sheets 30 and 30 without removing the protection sheet. It becomes possible.

  In addition, according to the present embodiment, since the opening / closing portions 22 and 22 of the clips 10 and 10 are connected by the metal rod 40, the opening / closing portions 22 and 22 are linked to each other, and the opening / closing operation of the opening / closing portion 22 is easy. become. Further, since the protective sheets 30 and 30 are passed through the metal rod 40, the shape of the protective sheet is stabilized. Further, for example, when the work for cutting the electric wire is performed in the portion of the electric wire 100 covered with the protective sheets 30, 30, the clips 10, 10 are connected by the metal rod 40, so that the cut electric wire 100 is cut. Is prevented from drooping downward.

  Further, according to the present embodiment, since the sheet magnets 26 and 28 that can be attracted and separated from each other are provided at the contact portions of the opening / closing portion 22 and the arm body 20, they are covered with the protective sheets 30 and 30 in the electric wire 100. When a predetermined operation is performed on the portion, the opening / closing sections 22 and 22 are opened, and otherwise, the opening / closing sections 22 and 22 can be kept closed.

  As mentioned above, although embodiment of this invention was described, embodiment of this invention is not restricted to embodiment mentioned above. For example, as the sheet magnets 26 and 28, those having an attractive force such that when one clip 10 is opened, the other clip 10 connected to the metal rod 40 opens may be used. Thereby, the attachment work to the electric wire of the insulation protector 1 for indirect live wires becomes easy.

DESCRIPTION OF SYMBOLS 1 Indirect live-insulation protective device 10 Clip 12 Grip arm 14 Rotating shaft 20 Arm main body 20a Tip part 20b Base end part 20c Step part 22 Opening / closing part 22a Plate-like part 22b L-shaped part 22c Gripping part 24 Rotating shaft 26, 28 Sheet magnet 30 Protection sheet 32 Eyelet 40 Metal rod 100 Electric wire

Claims (3)

A pair of clips having gripping arms forming a pair sandwiching the electric wire, and arranged side by side along the electric wire;
A protective sheet that is attached to the gripping arm and covers both sides of the peripheral surface of the electric wire,
The gripping arm has an arm main body and an opening / closing part that is attached to the arm main body and can be opened and closed outward.
The protective sheet is attached to the opening / closing part,
The insulative protector for indirect live lines, wherein the opening / closing part has a grip part that can be gripped by an indirect live line tool.   It further includes a rod-like member whose one end is fixed to the opening / closing portion of one clip, the central portion is passed through a hole formed in the protective sheet, and the other end is fixed to the opening / closing portion of the other clip. The insulative protective equipment for indirect hot wires according to claim 1.   The insulative protective device for indirect hot wires according to claim 1, further comprising a magnet that can be attracted and separated from each other at a contact portion between the opening / closing portion and the arm main body.

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