JP5653692B2 - Insulation protection cover for indirect hot-wire construction - Google Patents

Description

  In the indirect hot wire method, the present invention relates to an indirect active wire covering covering distribution line-related equipment such as arm brackets and insulators in the upper part of electric poles related to electric wiring in order to prevent electric shock accidents, short circuits, and ground faults during work. The present invention relates to an insulation protective cover for wire construction.

  Due to the dramatic spread of OA equipment such as computers and other electrical products in ordinary homes and offices in recent years, the mainstream is the hot-wire method that performs electrical work such as inspections and repairs related to distribution lines without providing power outage time. It has become.

  However, with this hot-wire method, work is performed with the distribution lines and the like being energized, so there is a high possibility of electric shock accidents, short-circuits, ground faults, etc. during work. For the purpose of prevention, it has been common to cover distribution line related machines such as distribution lines, armatures, and insulators with protective insulating sheets.

  There exists patent document 1 as an example of this insulating sheet for protection. The protective insulating sheet disclosed in Patent Document 1 is a magnetic insulating sheet made of a rubber sheet or a resin sheet having an insulating property, and a magnetic force is applied to relative positions facing each other when the electric insulating sheet is folded in half. By arranging a plurality of permanent magnets that can be joined to each other.

  By suspending the protective insulating sheet along the distribution line so as to be folded in half and covered, it is wound around the distribution line by the attractive force of the opposing permanent magnets. Further, this protective insulating sheet is disposed so as to cover the arm metal made of a square hollow steel material, and is adsorbed and fixed to the surface of the arm metal by a permanent magnet.

JP 2006-340462 A

  According to Patent Document 1, the protective insulating sheet is folded in half and suspended on the distribution line, etc., so that the opposing permanent magnets are attracted to each other and the protective insulating sheet is fixed to the distribution line, etc. Coating becomes possible. Further, the armor can be partially covered and insulated by arranging the protective insulating sheet so as to cover the armor and adhering and fixing it to the surface of the armor with a permanent magnet.

  However, this flexible protective insulation sheet can be attached to the distribution line by suspending the central part of the protective insulation sheet folded in half by the operation of an insulation work tool, for example, an insulation tool, on the distribution line. Further, the work of attracting the opposing permanent magnets and attaching them to the distribution line is extremely troublesome and requires a lot of work time, and a large work load is required for the worker. Moreover, skill is required for the work. Similarly, it is extremely troublesome and takes a lot of work time in the work of placing the protective insulation sheet accurately at a predetermined position of the arm metal by the insulation work tool and attracting and fixing it to the surface of the arm metal by the permanent magnet, which requires a lot of work time. A work burden is required, and skill is required for the work.

  Also, if the permanent magnet attracting force is small, when the work tool comes into contact with the protective insulating sheet during construction, the protective insulating sheet is displaced and the distribution line and arm cover are not completely covered.・ There is a risk that a short circuit cannot be prevented sufficiently. On the other hand, when the attractive force of the permanent magnet is large, positioning of the protective insulation sheet to the distribution line or arm metal becomes more troublesome, and the protective insulation sheet is removed from the distribution line or arm metal by the insulating rod. Work is also cumbersome.

  Therefore, when performing electrical work in the live line state, insulation protection cover for indirect live line work that can cover and remove distribution line related equipment etc. easily and reliably by simple work and reduce the work burden on the worker Is to provide.

The invention of an insulation protective cover for indirect hot wire construction according to claim 1 which achieves the above object is an indirect hot wire construction method of an armor extending in a rectangular cross section at the upper part of a utility pole and an insulator disposed on the upper surface of the armor An insulative protective cover for indirect hot-wire construction that covers the upper side of the arm metal by folding along the upper edge of the first side surface cover part that covers one side surface of the arm metal and the first side surface cover part A first cover portion integrally covering a first upper surface cover portion that covers a part of the first upper cover portion, and a half-cylinder-shaped first insulator holding portion that is continuously formed on the first upper surface cover portion and covers the insulator, A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion covering and having an edge capable of contacting the edge of the first upper surface cover portion; A second cover part formed integrally with a half-cylinder-shaped second insulator holding part that is continuously formed on the cover part and covers the insulator, and covers the lower surface of the arm metal, and both ends are respectively provided with hinges. The lower surface cover portion laid between the lower edge of the first cover portion and the lower edge of the second cover portion , and the end edges of the first upper surface cover portion and the second upper surface cover portion are adsorbed in contact with each other. A first cover for holding and holding the permanent magnets provided on the first cover part and the second cover part to be held, and the edges of the first upper surface cover part and the second upper surface cover part in contact with each other. And a hook-and-loop fastener provided on each of the first cover portion and the second cover portion.

  According to this, the first insulator holding part of the first cover body is fitted to the insulator body by operating an insulation work tool or the like, the first upper surface cover part is locked to the upper surface of the arm metal, and the lower surface cover is centered on the hinge. After the part is swung and brought into contact with the lower surface of the arm metal, the second cover body is swung upward to attract the permanent magnet and temporarily fix the first cover body and the second cover body. The insulation protective cover can be firmly attached to a predetermined position by a simple operation of joining the surface fasteners to each other in the temporarily fixed state, thereby reducing the work load on the operator.

  Further, since the first insulator holding portion and the second insulator holding portion are fitted and covered with the lever and the arm metal is covered with the first cover main body and the second cover main body, the insulator and the arm metal are surely brought into a predetermined range. It can be kept in a covered state.

  The invention of the insulation protective cover for indirect hot wire construction according to claim 2, which achieves the above object, comprises an armor extending in a rectangular cross section at the upper part of a utility pole in an indirect hot wire method and an insulator disposed on the upper surface of the armor An insulative protective cover for indirect hot-wire construction that covers the upper side of the arm metal by folding along the upper edge of the first side surface cover part that covers one side surface of the arm metal and the first side surface cover part A first cover portion integrally covering a first upper surface cover portion that covers a part of the first upper cover portion, and a half-cylinder-shaped first insulator holding portion that is continuously formed on the first upper surface cover portion and covers the insulator, A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion covering and having an edge capable of contacting the edge of the first upper surface cover portion; A second cover part formed integrally with the cover part so as to cover the insulator and to be integrally formed with a half-cylinder-shaped second insulator holding part facing the first insulator holding part; and below the first cover part A hinge for swingably connecting the tip of the first connecting portion extending to the edge and the tip of the second connecting portion extending to the lower end of the second cover portion; the first upper surface cover portion; 2 Permanent magnets provided on the first cover part and the second cover part for attracting and holding the respective edges of the upper surface cover part in contact with each other; and the mutual ends of the first upper surface cover part and the second upper surface cover part It has the 1st cover part and the surface fastener respectively provided in the 2nd cover part which mutually join and hold | maintain an edge in the contact state, It is characterized by the above-mentioned.

  According to this, the first lever holding portion of the first cover main body is fitted to the lever main body by operating the insulation work tool or the like, the first upper surface cover portion is locked to the upper surface of the arm metal, and the second centering on the hinge. By swinging the cover body upward, the permanent magnets are attracted and the first cover body and the second cover body are temporarily fixed. The insulation protective cover can be firmly attached to a predetermined position by a simple operation of joining the surface fasteners to each other in the temporarily fixed state, thereby reducing the work load on the operator. Further, since the first insulator holding portion and the second insulator holding portion are fitted and covered with the lever and the arm metal is covered with the first cover main body and the second cover main body, the insulator and the arm metal are surely brought into a predetermined range. It can be kept in a covered state.

  According to a third aspect of the present invention, in the insulating protective cover for indirect hot-wire construction according to the first or second aspect, the first upper surface cover portion is provided with a permanent magnet that is attracted to the arm metal.

  According to this, by operating the insulation work tool, the first lever holding portion of the first cover main body is fitted to the lever main body, and the first upper surface cover portion is locked to the upper surface of the arm metal by the arm metal. The first upper surface cover portion is attracted to the arm metal by the magnet and fixed in a state where the first cover main body 11 is positioned on the arm metal 1, so that the workability is further improved and the work load on the operator is reduced.

  The invention of the insulation protective cover for indirect hot wire construction according to claim 4, which achieves the above object, includes an armor extending in a rectangular cross section at the upper part of a utility pole in an indirect hot wire method and an insulator disposed on the upper surface of the armor An insulative protective cover for indirect hot-wire construction that covers the upper side of the arm metal by folding along the upper edge of the first side surface cover part that covers one side surface of the arm metal and the first side surface cover part A first cover portion integrally covering a first upper surface cover portion that covers a part of the first upper cover portion, and a half-cylinder-shaped first insulator holding portion that is continuously formed on the first upper surface cover portion and covers the insulator, A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion covering and having an edge capable of contacting the edge of the first upper surface cover portion; A second cover part formed integrally with the cover part so as to cover the insulator and to be integrally formed with a half-cylinder-shaped second insulator holding part facing the first insulator holding part; and below the first cover part The front end of the first connecting part extending to the edge and the front end of the second connecting part extending to the lower end of the second cover part are swingably connected via the first hinge and the second hinge, respectively. And a holder having a mounting portion that can be mounted on a bolt portion of a support pin provided on the arm metal, and the first upper surface cover portion and the second upper surface cover portion are held in contact with each other in the contact state. The first cover part and the second cover part are held in a state where the permanent magnets provided in the first cover part and the second cover part, and the edges of the first upper surface cover part and the second upper surface cover part are in contact with each other. Specially provided with hook-and-loop fasteners respectively provided on the cover part. To.

  According to this, the holder is attached to the bolt portion of the support pin provided on the arm metal by the operation of the insulating work tool, the first cover body is swung around the first hinge, and the first lever holding portion is moved to the lever main body. The first upper surface cover portion is covered with the upper surface of the arm metal, and the second cover body is swung upward about the second hinge, so that the permanent magnets are attracted to each other and the first cover body and the first cover body are 2 The cover body is temporarily fixed. In this temporarily fixed state, the insulating protective cover can be firmly attached to a predetermined position by a simple operation of joining the surface fasteners to each other in the temporarily fixed state, thereby reducing the work burden on the operator. Further, since the first insulator holding portion and the second insulator holding portion are fitted and covered with the lever and the arm metal is covered with the first cover main body and the second cover main body, the insulator and the arm metal are surely brought into a predetermined range. It can be kept in a covered state.

  According to a fifth aspect of the present invention, in the insulating protective cover for indirect hot wire construction according to any one of the first to fourth aspects, the first cover portion and the second cover portion can be gripped by an insulating work tool. A gripping portion is provided.

  According to this, the workability | operativity by an insulated work tool improves by providing the holding part which can be hold | gripped with a work tool in a 1st cover part and a 2nd cover part.

  According to the present invention, the first lever holding portion of the first cover main body is fitted to the lever main body by operating the insulation work tool or the like, and the first upper surface cover portion is locked to the upper surface of the arm metal. By fitting the second lever holding portion to the lever main body and locking the second upper surface cover portion to the arm metal, the permanent magnet is attracted and the first cover main body and the second cover main body are temporarily fixed. In this state, the insulating protective cover can be firmly attached at a predetermined position by a simple operation of joining the surface fasteners to each other, and the work burden on the operator is reduced.

It is explanatory drawing which shows the expansion | deployment state of the armrest and pin insulator which show the outline | summary of 1st Embodiment, and an insulation protective cover. It is II arrow directional view of the insulation protective cover in FIG. It is the III-III sectional view taken on the line of FIG. It is a perspective view which shows the mounting state of an insulation protective cover. It is explanatory drawing of the attachment procedure of an insulation protective cover. It is explanatory drawing of the attachment procedure of an insulation protective cover. It is explanatory drawing which shows the expansion | deployment state of the armrest and pin insulator which show the outline | summary of 2nd Embodiment, and an insulation protective cover. It is a perspective view which shows the mounting state of an insulation protective cover. It is explanatory drawing of the attachment procedure of an insulation protective cover. It is explanatory drawing which shows the expansion | deployment state of the insulation protection cover which shows the outline | summary of 3rd Embodiment. It is a side view of a holder. It is a perspective view which shows the mounting state of an insulation protective cover. It is a XIII arrow directional view of Drawing 12 showing the wearing state of an insulating protection cover. It is explanatory drawing of the attachment procedure of an insulation protective cover. It is explanatory drawing of a holder. It is explanatory drawing of a holder.

  An embodiment of an insulating protective cover for indirect hot wire construction according to the present invention will be described with reference to the drawings.

(First embodiment)
In the first embodiment of the indirect hot-wire construction insulation protective cover of the present invention, in hot-wire work, insulation that covers and insulates the skirt portion of the armature and the pin insulator attached to the armrest as the distribution line related equipment on the power pole An example of the protective cover will be described with reference to FIGS.

  FIG. 1 is an explanatory view showing an unfolded state of the armrest and pin insulator and the insulating protective cover, FIG. 2 is a sectional view taken along the line II in FIG. 1, and FIG. 3 is a sectional view taken along the line III-III in FIG. FIG. 5 is a perspective view showing a mounting state of the insulating protective cover, and FIGS. 5 and 6 are explanatory diagrams of an attaching procedure of the insulating protective cover.

  Prior to the description of the insulating protective cover 10, an outline of the arm metal 1 and the pin insulator 6 that are insulated and covered by the insulating protective cover 10 will be described with reference to FIG. 1.

  The arm 1 attached to the utility pole is composed of an upper surface 2, a lower surface that connects the lower edges of the first side surface 3 and the second side surface 4, both side surfaces 3, 4 extending downward along both edges of the upper surface 2. 5 and is formed of a rectangular hollow steel material having a width W and a height H that extends substantially in the horizontal direction. Corresponding to the lever mounting portion of the arm 1, pin insertion holes (not shown) are drilled in the upper surface 2 and the lower surface 5.

  On the other hand, the pin insulator 6 is referred to as a No. 6 pin insulator, and is composed of an insulator body 7 and a support pin 8. The insulator body 7 includes a cap portion 7a, a skirt portion 7b, and a neck portion 7c that is located between the cap portion 7a and mooring the distribution line. A support pin 8 protrudes coaxially with the insulator body 7 at the base of the insulator body 7. A bolt portion 8a that can be inserted into the pin insertion hole of the arm metal 1 is formed at the distal end portion of the support pin 8, and an annular stopper 8b is formed on the proximal end side of the bolt portion 8a.

  In this pin insulator 6, the bolt portion 8 a of the support pin 8 is inserted from a pin insertion hole opened in the upper surface 2 of the arm 1, and the stopper 8 b is in contact with the upper surface 2 through the pin insertion hole in the lower surface 5. In this state, the nut 9 is fastened to the bolt portion 8a and the arm 9 is fixed.

  The insulating protective cover 10 is shown in a developed state in FIG. 1 and a first cover body 11, a second cover body 21, and a first cover body 11 formed of rigid synthetic resin as shown in FIG. The second cover main body 21 is configured by a pair of lower surface cover portions 37 and 38 that are connected to each other so as to be swingable.

  The first cover body 11 is slightly larger than the height H of the arm metal 1 so that the dimensions of the upper edge 12a to the lower edge 12b can cover the first side surface 3 over a predetermined covering width of the arm metal 1. A rectangular flat plate-like first side surface cover portion 12 and a part of the upper surface 2 of the arm metal 1 bent in an L shape along the upper edge 12a of the first side surface cover portion 12, an upper surface in the present embodiment. 2 having a rectangular flat plate-like first upper surface cover portions 13 and 14 having a width from the upper edge 12a to the end edges 13a and 14a that can be covered over a width of about 1/2 of the first upper cover portion. The distance between the inner end of 13 and the inner end of the first cover portion 14 is set to be slightly larger than the diameter of the insulator body 7.

  The rectangular flat plate-like side wall portions 16 and 17 and the first side surface cover portion 12 that are continuously opposed to the inner end of the first upper surface cover portion 13 and the inner end of the first upper surface cover portion 14 are side walls that are continuous with each other. A half-cylinder-shaped first insulator holding portion 15 formed of a rectangular flat plate-like side wall portion 18 spanned between the portions 16 and 17 is integrally formed. The first insulator holding portion 15 is formed with an open portion that continuously opens from the upper end side of the side wall portions 16, 17, 18 to the end edges 16 a, 17 a of the side wall portions 16, 17. The height from the lower surfaces 13b, 14b of the first upper surface cover portions 13, 14 to the upper ends of the side wall portions 16, 17, 18 is set to an intermediate height between the upper surface 2 of the arm metal 1 and the skirt portion 7b of the insulator 6. . Further, a grip portion 19 that protrudes in a rib shape is formed on the outer surface of the side wall portion 18.

  Permanent magnets 13M, 14M, 16M, and 17M are provided on the lower surfaces 13b and 14b of the first upper surface cover portions 13 and 14 and the edges 16a and 17a of the side wall portions 16 and 17, respectively. Moreover, the strip | belt-shaped surface fasteners 13F and 14F are affixed on the upper surfaces 13c and 14c of each 1st upper surface cover part 13 and 14, respectively.

  The second cover main body 21 has substantially the same shape as the first cover main body 11, and the dimensions of the upper edge 22a to the lower edge 22b that can cover the second side surface 4 over the predetermined covering width of the arm metal 1 are the arms. A rectangular flat plate-like second side cover 22 that is slightly larger than the height H of the gold 1 and an upper surface 2 of the arm 1 that is bent in an L shape along the upper edge 22a of the second side cover 22. In part, in this embodiment, rectangular flat plate-like second upper surface cover portions 23 and 24 having a width from upper edge 22a to end edges 23a and 24a that can be covered over approximately half the width of upper surface 2. Have

  The side walls of the rectangular flat plate-like side walls 26 and 27 and the second side surface cover part 22 that face each other in succession to the inner end of the second upper surface cover part 23 and the inner side end of the second upper surface cover part 24. A half-cylinder-shaped second insulator holding portion 25 formed of a rectangular flat plate-like side wall portion 28 spanned between the portions 26 and 27 is integrally formed. The height from the lower surfaces 23b, 24b of the second upper surface cover portions 23, 24 to the upper ends of the side wall portions 26, 27, 28 is set to an intermediate height between the upper surface 2 of the arm metal 1 and the skirt portion 7b of the insulator 6. . Further, a grip portion 29 that protrudes in a rib shape is formed on the outer surface of the side wall portion 28.

  Permanent magnets 26M, 17M provided on the side wall portions 16, 17 of the first insulator holding portion 15 on the end edges 26a, 27a of the side wall portions 26, 27 of the second insulator holding portion 25, and the permanent magnets 26M, which can be attracted to each other. 27M is provided.

  Further, as shown in FIG. 3, which is a cross-sectional view taken along line III-III in FIG. 1, the base end of the flexible strip 30 is attached to the top surface 23 c of the second top cover portion 23. A strip-shaped surface fastener 23F is stuck on the part. Further, band-shaped surface fasteners 31 </ b> F and 32 </ b> F are attached to both surfaces of the front end portion of the band-shaped body 30. As shown in FIG. 3, the belt-shaped body 30 is folded in two, and the surface fastener 31 </ b> F is joined to the surface fastener 23 </ b> F, whereby the belt-shaped body 30 is held in a folded state on the upper surface 23 c of the second upper surface cover portion 23. Similarly, the base end portion of the flexible belt-like body 33 is attached to the upper surface 24c of the second upper surface cover portion 24, and the belt-like surface fastener 24F is attached to the upper surface of the base end portion of the belt-like body 33, Band-shaped surface fasteners 34 </ b> F and 35 </ b> F are attached to both surfaces of the distal end portion of the body 33.

  One end of a pair of lower surface cover portions 36, 37 arranged in parallel with the lower edge 12b of the first side surface cover portion 12 of the first cover body 11 with hinges 36a, 37a interposed therebetween is swingably connected to the lower surface cover portion. The other ends of 36 and 37 are swingably connected to the lower end 22b of the second side cover portion 22 of the second cover body 21 via hinges 36b and 37b, respectively. The lower surface cover portions 36 and 37 installed on the lower edge 12b of the first side surface cover portion 12 and the lower edge 22b of the second side surface cover portion 22 through the hinges 36a and 37a and the hinges 36b and 37b are respectively arms. In order to avoid contact with the bolt portion 8a of the support pin 8 and the nut 9 protruding from the lower surface 5 of the gold 1, the hinges 36a, The dimensions of the hinges 36b and 37b from 37a are set to be the same as or slightly larger than the width W of the lower surface 5 of the arm metal 1.

  Next, a method for attaching the insulating protective cover 10 will be described based on the attachment procedure shown in FIGS.

  Prior to attaching the insulating protective cover 10, the belt-like body 30 attached to the upper surface 23c of the second upper surface cover portion 23 is folded in half, and the hook-and-loop fastener 31F is joined to the hook-and-loop fastener 23F. Folded on the upper surface 23c of the portion 23, similarly, the band-shaped body 33 attached to the upper surface 24c of the second upper surface cover portion 24 is folded in two, and the surface fastener 34F is joined to the surface fastener 23F to form a band-shaped body 33 is prepared by holding it in a state folded on the second upper surface cover portion 24.

  Next, as shown in FIGS. 1 and 5A, the first cover body 11 is placed in the state where the first cover body 11 is directed upward and the lower surface cover portions 36 and 37 and the second cover body 21 are suspended. The gripping portion 19 is gripped by an insulating work tool, for example, the insulating jacket 100, and is guided to the lever mounting portion of the arm metal 1 which is the mounting portion of the insulating protective cover 10 by the operation of the insulating jacket 100. The opening part of the insulator holding part 15 is made to oppose the insulator main body 7 of the pin insulator 6.

  And the edge 16a of the side wall part 16 of the first insulator holding part 15 and the edge 17a of the side wall part 17 are guided along the skirt part 7b of the insulator body 7, respectively, and the insulator body 7 is inserted into the first insulator holding part 15. The first upper surface cover portions 13 and 14 are moved along the upper surface 2 of the arm metal 1 to bring the first side surface cover portion 12 into contact with the first side surface 3 of the arm metal 1. Then, the insulating protective cover 10 is positioned with respect to the arm metal 1 and the pin insulator 6.

  From this state, the first cover body 11 is moved downward, and the first upper surface cover parts 13 and 14 are locked to the upper surface 2 of the arm 1 as shown in FIG. Accordingly, the permanent magnets 13M and 14M provided on the lower surfaces 13d and 14d of the first upper surface cover portions 13 and 14 are attracted to the upper surface 2 of the arm metal 1 and the first cover body 11 is fixed to the arm metal 1. The insulating protective cover 10 is positioned and attached to the arm metal 1 and the pin insulator 6 by attaching the end edges 16a and 17a of the side wall portions 16 and 17 of the first insulator holding portion 15 to the skirt portion of the insulator main body 7, respectively. It can be easily performed by a simple operation of guiding and fitting along 7b.

  The first lever holding portion 15 of the first cover main body 11 is fitted into the lever main body 7, the first upper surface cover portions 13 and 14 are engaged with the upper surface 2 of the arm 1, and the first side cover portion 12 is the first side cover portion 12. In a state where one side 2 is covered and attached to the arm 1, as shown in FIG. 5B, the grip portion 29 of the second cover body 21 is gripped by the insulating jacket 100, and by operating the insulating jacket 100, As shown in FIG. 5 (c), the lower surface cover portions 36 and 37 are swung upwardly around the hinges 36 a and 37 a to be brought into contact with the lower surface 5 of the arm metal 1. Here, since the lower surface cover portions 36 and 37 are supported via the hinges 36a and 37a on the lower edge 12b of the first cover body 11 that is stably fixed and held on the arm metal 1 by the permanent magnets 13M and 14M, The lower surface cover portions 36 and 37 can be easily and reliably swung around the hinges 36a and 37a.

  In a state where the lower surface cover portions 36 and 37 are in contact with the lower surface 5 of the arm metal 1, the upper cover body 21 is swung upwardly about the hinges 36b and 37b so as to push up the second cover body 21. Due to the swinging of the second cover main body 21, the second side surface cover portion 22 of the second cover main body 21 covers the second side surface 4 of the arm 1 and the second upper surface cover portion as shown in FIG. 23 and 24 cover the upper surface 2 of the arm metal 1, and the edges 23 a and 24 a of the second upper surface cover parts 23 and 24 face the edges 13 a and 14 a of the first upper surface cover parts 13 and 14. Further, the edge 26a of the side wall 26 of the second insulator holding part 25 and the edge 27a of the side wall 27 are guided along the skirt 7b of the insulator body 7 so that the second insulator holding part 25 fits into the insulator body 7. And the end edges 26a, 27a of the side wall portions 26, 27 abut against the end edges 16a, 17a of the side wall portions 16, 17 of the first insulator holding portion 15, and the permanent magnets 16M and 26M and the permanent magnets 17M and 27M of each other. The first cover body 11 and the second cover body 21 are temporarily fixed.

  Here, the lower surface cover portions 36 and 37 supported by the first cover body 11 that is stably fixed and held on the arm metal 1 by the permanent magnets 13M and 14M via the hinges 36a and 37a are provided on the lower surface 5 of the arm metal 1. Since the lower surface cover portions 36 and 37 are held in a stable state and the lower edge 21b of the second cover body 21 is supported by the lower surface cover portions 36 and 37 via hinges 36b and 37b, The second cover body 21 can be easily and reliably swung around the hinges 36b and 37b.

  In this temporarily fixed state, the upper surface 2 of the arm 1 is covered with the first upper surface cover portions 13 and 14 of the first cover body 11 and the second upper surface cover portions 23 and 24 of the second cover body 21, and the first side surface 3. Is covered by the first side surface cover portion 12 of the first cover body 1, the second side surface 4 is covered by the second side surface cover portion 22 of the second cover body 1, and the lower surface 5 is covered by the lower surface cover portions 36 and 37. Further, the skirt portion 7b is covered with the first insulator holding portion 15 and the second insulator holding portion 25 in a state where the cap portion 7a and the neck portion 7c of the insulator body 7 are exposed.

  In the state where the first cover body 11 and the second cover body 21 are temporarily fixed by the adsorption of the permanent magnets 16M and 26M and 17M and 27M, the upper surface 23c of the second upper surface cover portion 23 as shown in FIG. A hook formed at the tip of an insulating work rod (not shown) is locked to the tip of the band 30 held in a folded state by joining the hook and loop fastener 31F attached to the tip surface to the hook and loop fastener 23F. As shown in FIG. 6B, the surface fastener 31 </ b> F is pulled away from the surface fastener 23 </ b> F, that is, peeled, and the belt-like body 30 whose base end portion is fixed to the second upper surface cover portion 23 is reversed. Then, as shown in FIG. 6C, the hook and loop fastener 32 </ b> F attached to the tip of the strip 30 is joined to the hook and loop fastener 13 </ b> F on the first upper surface cover portion 13. As a result, the front end portion of the belt-like body 30 whose base end portion is fixed to the second upper surface cover 23 is connected to the first upper surface cover portion 13 by the surface fastener 32F and the surface fastener 13F that are joined to each other. The second upper surface cover part 23 is firmly connected.

  Similarly, the surface fastener 34F pasted to the front end portion of the strip 33 on the upper surface 24c of the second top cover portion 24 is peeled off from the surface fastener 24F, and the surface fastener 35F pasted to the front end of the strip 33 is removed. It joins to the surface fastener 14F on the 1st upper surface cover part 14. As shown in FIG. As a result, the front end portion of the belt-like body 33 whose base end portion is fixed to the second upper surface cover 24 is connected to the first upper surface cover portion 14 by the surface fastener 35F and the surface fastener 14F, and the first upper surface cover portion 14 is connected. The second upper surface cover part 24 is firmly connected.

  As a result, the upper surface 2 of the arm 1 is insulated and covered by the first upper surface cover portions 13 and 14 and the second upper surface cover portions 23 and 24 over a predetermined covering width, and the first side surface 3 is the first cover body. 11, the second side surface 4 is insulated by the second side surface cover portion 22 of the second cover main body 21, and the lower surface 5 is insulated by the lower surface cover portions 36 and 37, respectively. The entire periphery of the arm 1 is covered with insulation over the width. Further, the skirt portion 7b of the insulator body 7 is insulated and coated with the cap portion 7a and the neck portion 7c protruding by the first insulator holding portion 15 and the second insulator holding portion 25, and the distribution line is connected to the neck portion 7c of the insulator 6. When wiring work, etc. in a live line state such as mooring, it is possible to prevent ground faults and short-circuits and to achieve safety. Furthermore, the first insulator holding portion 15 and the second insulator holding portion 25 are fitted to the insulator body 7 so that the insulation protection cover 10 can be prevented from slipping off from the insulator mounting portion 1A of the arm 1 during power distribution work.

  On the other hand, the work of removing the insulating protective cover 10 is performed in reverse of the attaching procedure, by separating the surface fastener 32F from the surface fastener 13F by the insulating Yatco 100 or the like, and between the first upper surface cover portion 13 and the second upper surface cover portion 23. The connection between the belt-like body 30 and the hook-and-loop fasteners 14F and 32F is released, and similarly, the hook-and-loop fastener 35F is peeled off from the hook-and-loop fastener 14F, and the belt-like body 33 and the hook-and-loop fastener 14F between the first upper surface cover portion 14 and the second upper surface cover portion 24. , 35F is released.

  And the holding part 29 of the 2nd cover main body 21 is hold | gripped with the insulating Yatco 100, and the 2nd insulator holding part 25 is pulled apart from the 1st insulator holding part 15 against adsorption | suction of the permanent magnets 16M and 26M, 17M and 27M, Further, by swinging downward, the lower surface cover portions 36 and 37 and the second cover body 21 are suspended from the first cover body 11 as shown in FIG. In this state, the insulating cover 10 is held by gripping the grip portion 19 of the first cover body 11 with the insulating yoke 100 and pulling the first cover body 11 away from the arm metal 1 against the adsorption of the permanent magnets 13M and 14M. The arm 1 is removed.

  Therefore, according to the insulating protective cover 10 according to the present embodiment, the gripping portion 19 of the first cover main body 11 is gripped by the operation of the insulating jacket 100 or the like, and the first lever holding portion 15 is fitted to the lever main body 7. By locking the upper surface cover portions 13 and 14 to the upper surface 2 of the arm metal 1 on the arm metal 10, the permanent magnets 13 </ b> M and 14 </ b> M are attracted to the arm metal 1 and the first cover body 11 is positioned on the arm metal 1. With the gripping portion 29 of the second cover main body 21 being held in a fixed state, the bottom cover portions 36 and 37 are swung around the hinges 36a and 37a so as to contact the lower surface 5 of the arm metal 1. After the contact, the second cover body 21 is swung upward to attract the permanent magnets 16M and 26M and the permanent magnets 17M and 27M, thereby temporarily fixing the first cover body 11 and the second cover body 21. In this temporarily fixed state, the surface fastener 32F at the front end of the band 30 is joined to the surface fastener 13F of the first upper surface cover 13, and the surface fastener 35F at the front end of the band 33 is connected to the first upper surface cover 14. The insulating protective cover 10 can be firmly attached to a predetermined position by a simple operation of joining to the hooked surface fastener 14F.

  In addition, the permanent magnets 16M and 26M and the permanent magnets 17M and 27M may have a relatively small suction force that can secure an attractive force sufficient to temporarily fix the first and second insulator holding portions 15 and 25, and an insulating protective cover. 10 is excellent in workability of attachment and removal.

  In addition, it can also form in the cross-sectional arc shape which can accommodate the insulator main body 7. FIG. Moreover, the lower surface cover parts 36 and 37 arranged in parallel can also be formed by a single plate-like member having a hole that enables accommodation of the nut 9 and the like in the center part.

(Second Embodiment)
A second embodiment of the indirect hot-wire construction insulation protective cover of the present invention will be described with reference to FIGS. 7 to 9, parts corresponding to those in FIGS. 1 to 6 are given the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 is an explanatory view showing an unfolded state of the armrest and pin insulator and the insulating protective cover, FIG. 8 is a perspective view showing an attached state of the insulating protective cover, and FIG. 9 is an explanatory view of an attaching procedure of the insulating protective cover.

  The insulation protective cover 40 is composed of a first cover main body 41 and a second cover main body 45 formed of synthetic resin as shown in the expanded state in FIG. 7 and in the attached state in FIG.

  The first cover main body 41 includes a rectangular flat plate-like first side cover part 12 that can cover the first side face 3 over a predetermined covering width of the arm 1 and an upper edge of the first side cover part 12. A rectangular flat plate-like first upper surface cover which can be covered with a part of the upper surface 2 of the arm 1 by being bent in an L shape along the line 12a, which is approximately half the width of the upper surface 2 in this embodiment. It has a half-cylinder-shaped first insulator holding portion 15 formed by the portions 13, 14 and the side wall portions 16, 17, 18.

  The first upper surface cover portion 13 can be covered along the lower edge 12b of the first side surface cover portion 12 over a width of about ½ of the lower surface 5 of the arm metal 1, and as it moves from the lower edge 12b to the tip edge 42a, A rectangular plate-shaped first connecting portion 42 extending integrally with the first side surface cover portion 12 so as to be separated from the first side cover portion 12 is integrally formed. Furthermore, a grip portion 19 that protrudes in a rib shape is formed on the outer surface of the first side surface cover portion 12.

  Permanent magnets 13M, 14M, 16M, and 17M are provided on the lower surfaces 13b and 14b of the first upper surface cover portions 13 and 14 and the end edges 16a and 17a of the side wall portions 16 and 17 of the first insulator holding portion 15, respectively. Moreover, the strip | belt-shaped surface fasteners 13F and 14F are affixed on the upper surfaces 13c and 14c of each 1st upper surface cover part 13 and 14, respectively.

  The second cover main body 45 has substantially the same shape as the first cover main body 41 and a rectangular flat plate-like second side surface cover portion 22 that can cover the second side surface 4 over a predetermined covering width of the arm 1. A rectangular flat plate that can be bent in an L shape along the upper edge 22a of the second side surface cover portion 22 to cover the upper surface 2 of the arm metal 1 over a part, for example, a width of about 1/2. The second upper surface cover portions 23 and 24 and the side wall portions 26, 27 and 28 have a half-cylinder-shaped second insulator holding portion 25.

  The second upper surface cover portion 23 can be covered along the lower edge 22b of the second side surface cover portion 22 over the width of about 1/2 of the lower surface 5 of the arm 1 and the second upper surface cover portion 23 is moved from the lower edge 22b to the tip edge 46a. A rectangular plate-like second connecting portion 46 extending in an inclined manner with respect to the second side surface cover portion 22 so as to be separated from the second side cover portion 22 is integrally formed. Further, a grip portion 29 that protrudes in a rib shape is formed on the outer surface of the second side surface cover portion 22.

  Permanent magnets 26M, 17M provided on the side wall portions 16, 17 of the first insulator holding portion 15 on the end edges 26a, 27a of the side wall portions 26, 27 of the second insulator holding portion 25, and the permanent magnets 26M, which can be attracted to each other. 27M is provided.

  In addition, the base end portion of the flexible belt-like body 30 is attached to the upper surface 23 c of the second upper surface cover portion 23. Band-shaped surface fasteners 23F are adhered to the base end portion of the belt-shaped body 30, and band-shaped surface fasteners 31F and 32F are respectively adhered to both surfaces of the distal end portion. Similarly, the base end portion of the flexible belt-like body 33 is attached to the upper surface 24c of the second upper surface cover portion 24, and the belt-like surface fastener 24F is stuck on the base end portion of the belt-like body 33. Hook fasteners 34F and 35F (not shown) are attached to both surfaces of the distal end portion 33.

  The distal end 42a of the first connecting portion 42 of the first cover body 41 and the distal end 46a of the second connecting portion 46 of the second cover main body 45 can swing with each other via a hinge 47 extending along the distal ends 42a and 46a. Connected to

  Next, a method for attaching the insulating protective cover 40 will be described based on the attachment procedure shown in FIG.

  Prior to attaching the insulating protective cover 40, the belt-like body 30 attached to the upper surface 23c of the second upper surface cover portion 23 is folded in two, and the hook-and-loop fastener 31F is joined to the hook-and-loop fastener 23F, so that the belt-like body 30 becomes the second upper surface cover. Folded on the upper surface 23c of the portion 23, similarly, the band-shaped body 33 attached to the upper surface 24c of the second upper surface cover portion 24 is folded in two, and the surface fastener 34F is joined to the surface fastener 23F to form a band-shaped body 33 is prepared by holding the second upper surface cover portion 24.

  Next, as shown in FIGS. 7 and 9A, the grip portion 19 of the first cover main body 41 is moved with the first cover main body 41 facing upward and the second cover main body 45 hanging down via the hinge 47. A first insulator holding portion of the first cover main body 41 is gripped by an insulating work tool, for example, an insulating jacket 100, and is guided to the lever mounting portion 1A of the arm metal 1 serving as a mounting portion of the insulating protective cover 40 by operating the insulating jacket 100. 15 is made to oppose the insulator main body 7 of the pin insulator 6.

  And the edge 16a of the side wall part 16 of the 1st insulator holding | maintenance part 15 and the edge 17a of the side wall part 17 are each guide | induced along the skirt part 7b of the insulator main body 7, and while accommodating the insulator main body 7, each 1st The top cover portions 13 and 14 are moved along the top surface 2 of the arm metal 1, and the first side surface cover portion 12 is brought into contact with the first side surface 3 of the arm metal 1 so that the insulating protective cover for the arm metal 1 and the pin insulator 6 is provided. 40 positioning. From this state, the first cover body 11 is moved downward to lock the first upper surface cover portions 13 and 14 to the upper surface 2 of the arm 1 as shown in FIG. Thereby, the permanent magnets 13M and 14M provided on the lower surfaces 13b and 14b of the first upper surface cover portions 13 and 14 are attracted to the upper surface 2 of the arm metal 1 and the first cover body 41 is fixed to the arm metal 1.

  The first lever holding portion 15 of the first cover main body 41 is fitted to the lever main body 7, the first upper surface cover portions 13 and 14 are engaged with the upper surface 2 of the arm 1, and the first side surface cover portion 12 is the first side cover portion 12. With the side surface 2 covered and held on the arm 1, the grip portion 29 of the second cover main body 45 is gripped by the insulating jacket 100 as shown in FIG.

  Then, as shown in FIG. 9C, the second cover body 45 is swung upwardly around the hinge 47 to operate the second side cover portion 22 of the second cover body 45 as a brace. The second upper surface cover portion 23, 24 covers the upper surface 2 of the arm 1 and the edges 23b, 24b of the second upper surface cover portions 23, 24 are covered with the first upper surface cover portion. 13 and 14, the edge 26 a of the side wall 26 of the second insulator holding part 25 and the edge 27 a of the side wall 27 are guided along the skirt 7 b of the insulator body 7, respectively. Then, the insulator body 7 is accommodated in the opening 25A, the second insulator holding part 26 is fitted into the insulator body 7, and the edges 26a, 27a of the side wall parts 26, 27 are the side wall parts 16 of the first insulator holding part 15. , 17 in contact with the edges 16a, 17a of each other Permanent magnet 16M and 26M, the permanent magnet 17M and 27M are first cover body 41 and the second cover body 45 is temporarily fixed by suction. Here, the second connection of the second cover body 45 via the hinge 47 is connected to the leading edge 42a of the first connection part 42 of the first cover body 41 that is stably fixed and held on the arm 1 by the permanent magnets 13M and 14M. Since the portion 46 is supported, the swinging of the second cover body 45 around the hinge 47 can be performed easily and reliably.

  In this temporarily fixed state, the upper surface 2 of the arm 1 is covered with the first upper surface cover portions 13 and 14 of the first cover body 41 and the second upper surface cover portions 23 and 24 of the second cover body 45, and the first side surface 3. Is covered by the first side cover part 12 of the first cover body 41, the second side face 4 is covered by the second side cover part 22 of the second cover body 45, and the lower surface 5 is the first connection of the first cover body 41. The skirt portion 7b is covered with the first lever holding portion 15 and the second lever holding portion with the cap portion 7a and the neck portion 7c of the lever main body 7 exposed while being covered with the second connecting portion 46 of the portion 42 and the second cover main body 45. Covered by portion 25.

  In the state where the first cover main body 11 and the second cover main body 21 are temporarily fixed by the adsorption of the permanent magnets 16M and 26M and the permanent magnets 17M and 27M, the second upper surface cover portion as shown in FIGS. The surface fastener 31F pasted to the tip on the upper surface 23c of the head 23 is peeled off from the surface fastener 23F, and the surface fastener 32F is joined to the surface fastener 13F pasted to the first upper surface cover portion 13. As a result, the distal end portion of the belt-like body 30 whose base end is fixed to the second upper surface cover 23 is connected to the first upper surface cover portion 13 by the surface fastener 32F and the surface fastener 13F that are joined to each other. 2 The upper surface cover part 23 is connected. Similarly, the surface fastener 34F attached to the front end surface of the strip 33 on the upper surface 24d of the second upper surface cover portion 24 is peeled off from the surface fastener 24F, and the surface fastener 35F attached to the front end of the strip 33 is removed. It joins to the surface fastener 14F stuck on the 1st upper surface cover part 14. As shown in FIG. As a result, the distal end portion of the belt-like body 33 whose base end is fixed to the second upper surface cover 24 is connected to the first upper surface cover portion 14 by the surface fastener 35F and the surface fastener 14F that are joined to each other. 2 The upper surface cover part 24 is connected.

  As a result, the upper surface 2 of the arm 1 is insulated and covered by the first upper surface cover portions 13 and 14 and the second upper surface cover portions 23 and 24 over a predetermined covering width, and the first side surface 3 is the first cover body. The second side surface 4 is insulated and covered by the second side surface cover portion 22 of the second cover body 45 by the first side surface cover portion 41 of 41. Further, the lower surface 5 is insulated and covered by the first connecting portion 42 of the first cover body 41 and the second connecting portion 46 of the second cover body 45. Further, the skirt portion 7b of the insulator body 7 is insulated and coated with the cap portion 7a and the neck portion 7c protruding by the first insulator holding portion 15 and the second insulator holding portion 25, and the distribution line is connected to the neck portion 7c of the insulator 6. When wiring work, etc. in a live line state such as mooring, it is possible to prevent ground faults and short-circuits and to achieve safety. Further, the first insulator holding portion 15 and the second insulator holding portion 25 are fitted to the insulator main body 7 so that the insulation protective cover 40 can be prevented from slipping off from the insulator attaching portion of the arm 1 during power distribution work.

  On the other hand, the work of removing the insulating protective cover 40 is performed in reverse of the attaching procedure by separating the surface fastener 32F from the surface fastener 13F with the insulating Yatco 100 or the like and separating the first upper surface cover portion 13 and the second upper surface cover portion 23 from each other. The connection by the belt-like body 30 and the hook-and-loop fasteners 14F and 32F is released, and similarly, the hook-and-loop fastener 35 is peeled off from the hook-and-loop fastener 14F, and the belt-like body 33 and the hook-and-loop fastener 14F of the first upper surface cover portion 14 and the second upper surface cover portion 24 are removed. , 35F is released.

  And the holding part 29 of the 2nd cover main body 41 is hold | gripped with the insulating Yatco 100, and the 2nd insulator holding part 25 is moved from the 1st insulator holding part 15 against the adsorption | suction of the permanent magnets 16M and 26M and the permanent magnets 17M and 27M. Pulling apart and swinging downward, the second cover body 45 is suspended from the first cover body 41 as shown in FIG. In this state, the insulating protective cover 10 is held by holding the holding portion 19 of the first cover main body 41 with the insulating yoke 100 and pulling the first cover main body 41 away from the arm metal 1 against the adsorption of the permanent magnets 13M and 14M. It is removed from the arm 1 and the pin insulator 6.

  Therefore, according to the insulating protective cover 40 according to the present embodiment, the gripping portion 19 of the first cover main body 41 is gripped by the operation of the insulating jacket 100 or the like, and the first lever holding portion 15 is fitted to the lever main body 7. By locking the upper surface cover parts 13 and 14 to the upper surface 2 of the arm metal 1 on the arm metal 1, the permanent magnets 13 </ b> M and 14 </ b> M are attracted to the arm metal 1 and the first cover body 11 is positioned on the arm metal 1. With the first cover main body 41 fixed to the arm 1, the grip portion 29 of the second cover main body 21 is gripped by the insulating jacket 100 and the second cover main body 45 is moved upward with the hinge 47 as the center. The permanent magnets 16M and 26M and the permanent magnets 17M and 27M are attracted to swing the first cover main body 41 and the second cover main body 45 temporarily. In this temporarily fixed state, the surface fastener 32F at the front end of the band 30 is joined to the surface fastener 13F of the first upper surface cover 13, and the surface fastener 35F at the front end of the band 33 is connected to the first upper surface cover 14. The insulating protective cover 40 can be firmly attached to a predetermined position by a simple operation of joining to the surface fastener 14F that is attached.

(Third embodiment)
A third embodiment of the indirect hot wire insulation protective cover of the present invention will be described with reference to FIGS. 10 to 16. 10 to 16, parts corresponding to those in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof will be omitted in order to simplify the description.

  10 is an explanatory view showing the unfolded state of the insulating protective cover 50, FIG. 11 is a side view of the holder, FIG. 12 is a perspective view showing the state of mounting the insulating protective cover of the insulating protective cover, and FIG. FIG.

  The insulating protective cover 50 is shown in a deployed state in FIG. 10 and a first cover body 51, a second cover body 55, and a first cover body 51 formed of synthetic resin as shown in FIGS. The holder 60 is connected to the second cover body 55.

  The first cover main body 51 includes a rectangular flat plate-like first side cover portion 12 that can cover the first side surface 3 over a predetermined covering width of the arm 1 and an upper edge of the first side cover portion 12. The first upper surface cover portions 13 and 14 each have a rectangular flat plate shape that can be covered along a part of the upper surface 2 of the arm metal 1 by bending along 12a, and in this embodiment, about a half width of the upper surface 2. And a half-cylinder-shaped first insulator holding portion 15 formed by the side wall portions 16, 17, and 18.

  The first side cover portion 12 is inclined to the lower edge 12b of the first side surface cover portion 12 so as to move away from the first upper surface cover portions 13 and 14 as the transition from the lower edge 12b to the leading edge 52a, and gradually. A narrow trapezoidal plate-like first connecting portion 52 is integrally formed. Furthermore, a grip portion 19 that protrudes in a rib shape is formed on the outer surface of the first side surface cover portion 12.

  Permanent magnets 16M, 17M are provided on the edges 16a, 17a of the side wall parts 16, 17 of the first insulator holding part 15. Moreover, the strip | belt-shaped surface fasteners 13F and 14F are affixed on the upper surfaces 13c and 14c of each 1st upper surface cover part 13 and 14, respectively.

  The second cover main body 55 has substantially the same shape as the first cover main body 51, a rectangular flat plate-shaped second side cover portion 22 that can cover the second side surface 4 of the arm 1, and the second side cover portion 22. A rectangular flat plate-like second upper surface cover portion 23 that can be bent along the upper edge 22a to cover a part of the upper surface 2 of the arm metal 1, that is, about half the width of the upper surface 2 in this embodiment. , 24 and a half-cylinder-shaped second insulator holding portion 25.

  The second side cover part 22 is inclined to the lower edge 22b of the second side cover part 22 so as to be separated from the second upper surface cover parts 23 and 24 as it moves from the lower edge 22b to the leading edge 56a and gradually narrows. A trapezoidal plate-like second connecting portion 56 is integrally formed. Further, a grip portion 29 that protrudes in a rib shape is formed on the outer surface of the second side surface cover portion 22.

  Permanent magnets 26M, 17M provided on the side wall portions 16, 17 of the first insulator holding portion 15 on the end edges 26a, 27a of the side wall portions 26, 27 of the second insulator holding portion 25, and the permanent magnets 26M, which can be attracted to each other. 27M is provided.

  In addition, the base end portion of the flexible strip 30 is attached to the upper surface 23 c of the second top cover portion 23, and the strip-shaped surface fastener 23 </ b> F is attached to the base end of the strip 30. Band-shaped hook-and-loop fasteners 31F and 32F are pasted on both surfaces of the front end portion. Similarly, the base end portion of the flexible belt-like body 33 is attached to the upper surface 24 c of the second upper surface cover portion 24, and the surface fastener 24 F is stuck on the base end portion of the belt-like body 33, Hook fasteners 34F and 35F are attached to both surfaces of the tip.

  As shown in FIG. 10 and an enlarged view taken along arrow XI in FIG. 10 and a side view in FIG. 11 (b), the holder 60 is provided with a support pin 6 protruding from the lower surface 5 of the arm 1. The outer shape having an inner hole 62 serving as a mounting portion that can be mounted on the bolt portion 8a has a cylindrical cylindrical holder main body 61. The outer periphery of the holder main body 61 is orthogonal to and parallel to the extending direction of the holder main body 61 in a side view. The first hinge 63 and the tip end edge 56a of the second connecting portion 56, which have the swing center axes 63a and 64a positioned and connect the tip edge 52a of the first connecting portion 52 in a swingable manner, are swingably connected. A second hinge 64 is formed. A bush 65 made of an elastic material such as rubber and having a plurality of protrusions 65a that are cylindrical and extend radially in the inner periphery is mounted in the inner hole 62 of the holder 61 serving as a mounting portion.

  As a result, the first cover body 51 and the second cover body 55 are swingably connected to the holder body 61 via the first hinge 63 and the second hinge 64, and the inner hole 62 of the holder body 61 and the pin insulator 5 are connected. By fitting the bolt portion 8a of the support pin 8, the bolt portion 8a is elastically held by the bush 65, and the holder 60 is held by the bolt portion 8a.

  The first side surface 51 is swung around the first hinge 63 while the holder 60 is fitted and held on the bolt portion 8a of the support pin 6 protruding from the lower surface 5 of the arm 1. The cover portion 12 and the first upper surface cover portions 23 and 24 are moved so as to cover the first side surface 3 and the upper surface 2 of the arm metal 20, respectively, and the second cover body 55 is shaken around the second hinge 64. The second side surface 4 and the upper surface 2 can be covered by moving.

  Next, a method for attaching the insulating protective cover 50 will be described based on the attachment procedure shown in FIG.

  Prior to attaching the insulating protective cover 50, the belt-like body 30 attached to the upper surface 23c of the second upper surface cover portion 23 is folded in half, and the hook-and-loop fastener 31F is joined to the hook-and-loop fastener 23F, so that the belt-like body 30 becomes the second upper surface cover. The belt 33 is held on the upper surface 23c of the portion 23, and is similarly folded in two, and the surface fastener 34F is joined to the surface fastener 23F by folding the belt 33 attached to the upper surface 24c of the second upper surface cover portion 24. Prepare by holding in the cover 24.

  Next, as shown in FIG. 10 or FIG. 14A, in the state where the first cover main body 51 and the second cover main body 55 are separated and deployed, the grip portion 19 of the first cover main body 51, the second cover main body 55 holding part 29 or holder 60, in this embodiment, the holding part 19 is held by an insulating work tool, for example, an insulating jacket 100, and the holder 60 protrudes from the lower surface 5 of the arm 1 by operating the insulating jacket 100. 8 is opposed to the bolt part 8a.

  The holder 60 is raised toward the bolt portion 8a of the support pin 8 protruding from the lower surface 5 of the arm metal 1, and is fitted to the bolt portion 8a of the support pin 8 as shown in FIG. As a result, the bush 65 is elastically deformed, the holder 60 is fixedly held on the bolt portion 8 a of the support pin 8, and the insulation protection cover 50 in the unfolded state is attached to the arm 1.

  Next, the grip 19 of the first cover body 51 is gripped by the insulating jacket 100, and the first cover body 51 is swung upward with the first hinge 63 as the swing center by the operation of the insulating jacket 100. Due to the swinging of the first cover body 51, as shown in FIG. 14C, the edge 16b of the side wall 16 of the first insulator holding part 15 and the edge 17b of the side wall 17 are respectively connected to the skirt part of the insulator body 7. The first insulator holding portion 15 accommodates the insulator main body 7 by guiding it along 7 b, while the first upper surface cover portions 13, 14 move along the upper surface 2 of the arm 1 and move to the first side surface cover portion 12. Comes into contact with the first side surface 3 of the arm 1 and the insulation protective cover 40 is positioned with respect to the arm 1 and the pin insulator 6. Here, the tip edge 52a of the first connecting portion 52 of the first cover body 51 is supported via the first hinge 63 of the holder 60 that is stably fixed and held on the arm metal 1 by the support pin 8. The first cover body 51 can be easily and reliably swung around the first hinge 63.

  Similarly, the first lever holding portion 15 of the first cover main body 61 is fitted into the lever main body 7, the first upper surface cover portions 13 and 14 are engaged with the upper surface 2 of the arm metal 1, and the first side surface cover portion. In a state where 12 covers the first side surface 2 and is held by the arm metal 1, the grip portion 29 of the second cover body 55 is gripped by the insulating jacket 100.

  Then, as shown in FIG. 14 (d), the second cover body 55 swings upward about the second hinge 64 to move the second side cover portion 22 of the second cover body 45 as shown in FIG. The second side surface 4 of the arm metal 1 is covered, the second upper surface cover portions 23 and 24 cover the upper surface 2 of the arm metal 1, and the edges 23a and 24a of the second upper surface cover portions 23 and 24 are covered with the first upper surface. While making it oppose the edge 13a, 14a of the cover parts 13 and 14, the edge 26a of the side wall part 26 of the 2nd insulator holding part 25 and the edge 27a of the side wall part 27 are each along the skirt part 7b of the insulator main body 7. The second lever holding portion 26 is fitted into the lever main body 7 and the end edges 26a, 27a of the side wall portions 26, 27 are brought into contact with the end edges 16a, 17a of the side wall portions 16, 17 of the first lever holding portion 15. In contact with each other permanent magnets 16M and 26M, permanent magnets 17M and 27M are first cover body 41 and the second cover body 45 is temporarily fixed by suction. Here, the tip edge 56a of the second connecting portion 56 of the second cover body 55 is supported via the second hinge 64 of the holder 60 that is stably fixed and held on the arm metal 1 by the support pin 8. The second cover body 55 can be easily and reliably swung around the second hinge 64.

  In this temporarily fixed state, the upper surface 2 of the arm 1 is covered with the first upper surface cover portions 13 and 14 of the first cover body 51 and the second upper surface cover portions 23 and 24 of the second cover body 55, and the first side surface 3. Is covered by the first side cover part 12 of the first cover body 51, the second side face 4 is covered by the second side cover part 22 of the second cover body 55, and the lower surface 5 is the first connection of the first cover body 51. The skirt portion 7b is covered with the first lever holding portion 15 and the second lever holding portion with the cap portion 7a and the neck portion 7c of the lever main body 7 being exposed, covered with the second connecting portion 56 of the portion 52 and the second cover main body 55. Covered by portion 25.

  In the state where the first cover main body 51 and the second cover main body 55 are temporarily fixed by the adsorption of the permanent magnets 16M and 26M and the permanent magnets 17M and 27M, as shown in FIGS. The surface fastener 31F pasted to the tip on the upper surface 23c of the head 23 is peeled off from the surface fastener 23F, and the surface fastener 32F is joined to the surface fastener 13F pasted to the first upper surface cover portion 13. As a result, the distal end portion of the belt-like body 30 whose base end is fixed to the second upper surface cover 23 is connected to the first upper surface cover portion 13 by the surface fastener 32F and the surface fastener 13F that are joined to each other. 2 The upper surface cover part 23 is connected. Similarly, the surface fastener 34F attached to the front end surface of the strip-shaped body 33 on the upper surface 24c of the second upper surface cover portion 24 is peeled off from the surface fastener 24F, and the surface fastener 35F attached to the front end of the strip-shaped body 33 is replaced with the first one. 1 It joins to the surface fastener 14F stuck on the upper surface cover part 14. As a result, the distal end portion of the belt-like body 33 whose base end is fixed to the second upper surface cover 24 is connected to the first upper surface cover portion 14 by the surface fastener 35F and the surface fastener 14F that are joined to each other. 2 The upper surface cover part 24 is connected.

  As a result, the upper surface 2 of the arm 1 is insulated and covered by the first upper surface cover portions 13 and 14 and the second upper surface cover portions 23 and 24 over a predetermined covering width, and the first side surface 3 is the first cover body. 51, the second side surface 4 is insulated and covered by the second side surface cover portion 22 of the second cover body 55, and the lower surface 5 is the first connection portion 52 and the second cover of the first cover body 51. Insulation coating is provided by the second connecting portion 56 of the main body 55. Further, the skirt portion 7b of the insulator body 7 is insulated and coated with the cap portion 7a and the neck portion 7c protruding by the first insulator holding portion 15 and the second insulator holding portion 25, and the distribution line is connected to the neck portion 7c of the insulator 6. When wiring work, etc. in a live line state such as mooring, it is possible to prevent ground faults and short-circuits and to achieve safety. Further, the first insulator holding portion 15 and the second insulator holding portion 25 are fitted to the insulator main body 7 so that the insulation protective cover 40 can be prevented from slipping off from the insulator attaching portion of the arm 1 during power distribution work.

  On the other hand, the work of removing the insulating protective cover 50 is performed in reverse of the attaching procedure, by separating the surface fastener 32F from the surface fastener 13F with the insulating Yatco 100 or the like, and between the first upper surface cover portion 13 and the second upper surface cover portion 23. The connection between the belt-like body 30 and the hook-and-loop fasteners 13F and 32F is released, and similarly, the hook-and-loop fastener 35F is peeled off from the hook-and-loop fastener 14F, and the belt-like body 33 and the hook-and-loop fastener 14F between the first upper surface cover portion 14 and the second upper surface cover portion 24. , 35F is released.

  And the holding part 19 of the 1st cover main body 51 is hold | gripped with the insulating Yatco 100, and the 1st insulator holding part 15 is resisted from adsorption | suction of the permanent magnets 16M and 26M and the permanent magnets 17M and 27M from the 2nd insulator holding part 25. 14, and swings downward about the first hinge 63. Similarly, the grip portion 29 of the second cover body 55 is gripped by the insulating jacket 100 and swings downward about the second hinge 64. As shown in b), the holder 60 is supported by the bolt portion 8a of the support pin 8 protruding from the lower surface 5 of the arm metal 1 in a state where the first cover body 51 and the second cover body 55 are deployed apart. Then, the holder 60 is pulled away from the bolt portion 8a of the support pin 8 protruding from the lower surface 5 of the arm 1 by the operation of the insulating jacket 100, and the insulating protective cover 50 is recovered.

  Therefore, according to the insulating protective cover 50 according to the present embodiment, the holder 60 is attached to the bolt portion 8a of the support pin 8 provided on the arm 1 by the operation of the insulating jacket 100 or the like, and the first hinge 63 is the center. The cover body 51 is swung so that the first insulator holding portion 15 is fitted to the insulator body 7, and the upper surface cover portions 13 and 14 cover the upper surface 2 of the arm metal 1, and the second cover around the second hinge 64. By swinging the main body 45 upward, the permanent magnets 16M and 26M and the permanent magnets 17M and 27M are attracted and the first cover main body 51 and the second cover main body 55 are temporarily fixed. In this temporarily fixed state, the surface fastener 32F at the front end of the band 30 is joined to the surface fastener 13F of the first upper surface cover 13, and the surface fastener 35F at the front end of the band 33 is connected to the first upper surface cover 14. The insulating protective cover 40 can be firmly attached to a predetermined position by a simple operation of joining to the surface fastener 14F that is attached.

  In the above-described embodiment, the bush 65 is made of an elastic material such as rubber in which a plurality of protrusions 65a that are cylindrical and extend radially in the inner periphery of the inner hole 62 of the holder 61 serving as a mounting portion are formed. However, instead of the bush 65, as shown in a plan view in FIG. 15 (a) and a side view in FIG. 15 (b), a groove-like shape extending in the axial direction along the inner hole 62 is shown. A recess 62a may be formed, and a permanent magnet 62M that is attracted to the support pin 8 may be disposed in the recess 62a. Further, as shown in the plan view of FIG. 16A and the side view of FIG. 16B, the permanent magnet 62M is disposed in the groove-like recess 62a extending in the axial direction along the inner hole 62. A bush 65 made of an elastic material such as rubber in which a plurality of protrusions 65a are radially formed can be mounted in the inner hole 62.

DESCRIPTION OF SYMBOLS 1 Armor 2 Upper surface 3 1st side surface 4 2nd side surface 5 Lower surface 6 Pin insulator 8 Support pin 8a Bolt part 10 Insulation protective cover 11 First cover main body 12 First side surface cover part 12a Upper edge 12b Lower edge 13,14 First Upper surface cover portions 13a, 14a Edge 15 First insulator holding portion 19 Grip portions 13M, 14M, 16M, 17M Magnets 13F, 14F Surface fastener 21 Second cover body 22 Second side cover portion 22a Upper edge 22b Lower edges 23, 24 2nd upper surface cover part 23a, 24a End edge 25 2nd insulator holding part 29 Grip part 26M, 27M Magnet 23F, 24F, 31F, 32F, 34F, 35F Surface fastener 36a, 36b, 37a, 37b Hinge 36, 37 Lower surface cover part 40 Insulation protection cover 41 First cover body 42 First connection portion 46 Second connection portion 50 Insulation protection cover 51 First cover Bar body 55 Second cover body 60 Holder

Claims (5)

In an indirect hot wire construction method, an armor extending in a rectangular cross section at the upper part of the utility pole and an insulating protective cover for indirect hot wire work covering the insulator disposed on the upper surface of the armor,
A first side cover portion covering one side surface of the arm metal; a first upper surface cover portion which is bent along the upper edge of the first side surface cover portion and covers a part of the upper surface of the arm metal; A first cover part integrally formed with a half-cylinder-shaped first insulator holding part that is continuously formed on the first upper surface cover part and covers the insulator;
A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion that has an edge that can be covered and abutted against an edge of the first upper surface cover portion, and a second cylindrical insulator that is continuously formed on the second upper surface cover portion and covers the insulator. A second cover part integrally formed with the holding part;
A lower surface cover portion covering the lower surface of the arm metal and having both ends laid between the lower edge of the first cover portion and the lower edge of the second cover portion via hinges;
Permanent magnets provided on the first cover part and the second cover part for attracting and holding the respective edges of the first upper surface cover part and the second upper surface cover part in contact with each other;
Hook and loop fasteners provided on the first cover portion and the second cover portion, respectively, which hold the end edges of the first upper surface cover portion and the second upper surface cover portion in contact with each other;
Insulation protective cover for indirect hot-wire construction, characterized by comprising In an indirect hot wire construction method, an armor extending in a rectangular cross section at the upper part of the utility pole and an insulating protective cover for indirect hot wire work covering the insulator disposed on the upper surface of the armor,
A first side cover portion covering one side surface of the arm metal; a first upper surface cover portion which is bent along the upper edge of the first side surface cover portion and covers a part of the upper surface of the arm metal; A first cover part integrally formed with a half-cylinder-shaped first insulator holding part that is continuously formed on the first upper surface cover part and covers the insulator;
A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion that covers and has an edge that can come into contact with an edge of the first upper surface cover portion, and is formed continuously with the second upper surface cover portion to cover the insulator and face the first insulator holding portion. A second cover part integrally formed with the second cylindrical holding part that halves the cylinder;
A hinge for swingably connecting a tip of a first connecting part extending to the lower edge of the first cover part and a tip of a second connecting part extending to the lower end of the second cover part;
Permanent magnets provided on the first cover part and the second cover part for attracting and holding the respective edges of the first upper surface cover part and the second upper surface cover part in contact with each other;
Hook and loop fasteners provided on the first cover portion and the second cover portion, respectively, which hold the end edges of the first upper surface cover portion and the second upper surface cover portion in contact with each other;
Insulation protective cover for indirect hot-wire construction, characterized by comprising   The insulating protective cover for indirect hot-wire construction according to claim 1 or 2, wherein a permanent magnet that is attracted to the arm metal is provided on the first upper surface cover portion. In an indirect hot wire construction method, an armor extending in a rectangular cross section at the upper part of the utility pole and an insulating protective cover for indirect hot wire work covering the insulator disposed on the upper surface of the armor,
A first side cover portion covering one side surface of the arm metal; a first upper surface cover portion which is bent along the upper edge of the first side surface cover portion and covers a part of the upper surface of the arm metal; A first cover part integrally formed with a half-cylinder-shaped first insulator holding part that is continuously formed on the first upper surface cover part and covers the insulator;
A second side surface cover portion that faces the first cover portion and covers the other side surface of the armrest, and a portion of the upper surface of the armrest that is bent along the upper edge of the second side surface cover portion. A second upper surface cover portion that covers and has an edge that can come into contact with an edge of the first upper surface cover portion, and is formed continuously with the second upper surface cover portion to cover the insulator and face the first insulator holding portion. A second cover part integrally formed with the second cylindrical holding part that halves the cylinder;
The front end of the first connecting part extending to the lower edge of the first cover part and the front end of the second connecting part extending to the lower end of the second cover part are respectively interposed through the first hinge and the second hinge. And a holder having a mounting portion that is swingably connected and attachable to a bolt portion of a support pin provided on the arm metal,
Permanent magnets provided on the first cover part and the second cover part for attracting and holding the respective edges of the first upper surface cover part and the second upper surface cover part in contact with each other;
Hook and loop fasteners provided on the first cover portion and the second cover portion, respectively, which hold the end edges of the first upper surface cover portion and the second upper surface cover portion in contact with each other;
Insulation protective cover for indirect hot-wire construction, characterized by comprising   The insulating protective cover for indirect hot-wire construction according to any one of claims 1 to 4, wherein the first cover portion and the second cover portion are provided with gripping portions that can be gripped by a work tool.

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