JP4272914B2 - Cover for repairing electric wire and its mounting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire repair cover that is used by being attached to a core wire exposed portion of an aerial distribution line by an indirect hot wire method, and a method for attaching the same.
[0002]
[Prior art]
Conventionally, for example, in the case of an overhead distribution line construction in the event of an accident in an overhead distribution line, it has been necessary to make the construction site non-voltage state to ensure safety, but to stop power transmission other than the construction site. Is not possible. For this reason, in general, in order to attach the clamp connected with the bypass cable after the completion of the bypass work across the construction site, the location where the overhead distribution line is stripped, and the clamp electrode is provided with a blade electrode penetrating the insulation coating In such a case, it is necessary to repair the exposed portion of the core wire of the aerial distribution line such as a residual penetration portion.
[0003]
By the way, as a cover for electric wire repair used for this purpose, for example, as disclosed in Japanese Patent Laid-Open No. 8-98363 (Patent Document 1), a pair of covers on both sides formed in a substantially semi-cylindrical shape. Each cover member is connected to one end of the cover member through an elastic hinge along the longitudinal direction thereof, and the other end of the cover member can be engaged via an engaging member. In addition, a seal member is provided on the inner peripheral surface of each cover member, and it is known that the cover member is configured to be attached to an aerial distribution line while being held with a required indirect live wire gripping tool such as a yatco. .
The conventional electric wire repair cover configured as described above temporarily holds and holds the cover members on both sides in a substantially half-open state using the elasticity of the hinge between the grip pieces of the indirect live wire gripping tool. The seal material is applied to the exposed part of the core wire of the overhead power distribution line, and the gripping piece is closed and the cover members on both sides are engaged by the engaging members. ing.
[0004]
[Problems to be solved by the invention]
By the way, the conventional wire repairing cover configured as described above can be reliably mounted when the outer diameter of the overhead distribution wire is relatively small. However, when attaching to a relatively large diameter overhead distribution line that approximates the inner diameter of the wire repair cover, the seal material gradually moves the overhead distribution line to the engagement side of the cover member due to the clamping pressure of the gripping piece. It is easy to press and deform the engaging member outward. For this reason, the engagement by the engagement member is not only very difficult, but in some cases, the engagement is likely to be impossible. This is especially true in the case of an insulated electric wire for difficult to snow which has fins on both sides.
[0005]
Further, the conventional wire repairing cover is provided with a protruding piece on the outer peripheral surface of the engaging side of the both-side cover member so as to be gripped by a required indirect live wire gripping tool such as a Yatsuko. For this reason, for example, when construction work or the like is being performed near the repaired overhead distribution line, when inserting a poly pipe or a wear-resistant protective pipe to protect the repaired part of the overhead distribution line, The protrusions provided on the cover members on both sides are obstructive, making it difficult to smoothly insert a poly pipe or the like, which is very troublesome and extremely troublesome.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-98363
The present invention solves the conventional problems, and always securely engages not only an overhead distribution line having an outer diameter smaller than the inner diameter of the wire repair cover but also an overhead distribution line having an approximate outer diameter. It is intended to provide an electric wire repair cover and a method of attaching the same, which can be inserted and attached easily even when attached to an aerial distribution line and repaired. Is.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention comprises a pair of cover members on both sides substantially in a semi-cylindrical shape, and each cover member has one end portion along its longitudinal direction. Are connected through an elastic hinge so as to be openable and closable, and the other end thereof can be engaged through an engaging member including a convex engaging piece and a concave engaging groove. Seal members are provided on the inner peripheral surfaces of the members, respectively, and in the wire repair cover configured to be attached to an aerial distribution line while being held by an indirect live wire gripping tool, the above-mentioned engaging member is configured. In order to prevent deformation at the time of engagement between the protrusion engaging groove and the groove engaging groove, a reinforcing protruding rib is protruded in the radial direction on one inner portion thereof, and the other On the inner part, there is a substantially rectangular rib for reinforcement provided with a fitting groove for fitting and abutting the rib in the radial direction. Only is projected, moreover, both side cover - is characterized by comprising a flexible retaining ring so allowed to hold allowed fitted on the gripping pieces of indirect hot-gripping tool is respectively projected on the outer peripheral surface of the member The gist of the wire repair cover is as follows.
[0009]
The invention according to claim 2 is characterized in that a hooking step portion is formed on the base end portion of the retaining ring so as to hook the gripping piece, and the wire repair cover according to claim 1 is characterized. To do.
[0010]
The third aspect of the present invention is such that the electric wire repair cover according to the first aspect is held on the gripping piece of the indirect live wire gripping tool with its retaining ring in an externally fitted manner, and substantially utilizes the elastic force of the hinge. The seal material is applied to the overhead power distribution line while being temporarily fixed and held in a semi-open state, and the gripping pieces are closed and the cover members on both sides are engaged with the engaging members. The gist of the mounting method of the electric wire repairing cover is a feature .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described based on an example shown in the drawings.
FIGS. 1 to 7 show an embodiment of the present invention, in which 1b is an insulating plastic wire repair cover, and 2 is a wire repair cover 1b. A pair of substantially semi-cylindrical cover members 3 on both sides, which are made into a pad shape, are elastic hinges 4 integrally formed at one end along the longitudinal direction so that the cover members 2 on both sides can be opened and closed. the hinge 3 on one to correspond to cover - along the free end projecting from the ridges engaging piece members 2, 5 toward the outer side to the upper end center of the ridges engaging piece 4 projecting been protrusion shaped auxiliary engagement pieces, the other to 6 occupies engage the ridges engaging piece 4 cover - concave engaging groove formed along the free end of the member 2, 7 the auxiliary engaging hole formed in the outer wall of the recess Article engaging groove 6 to occupy engage the engaging pieces 5, indirect hot-gripper 14 to be described later is 21 Both sides cover to the grip piece 15 allowed to fit holding - each projecting from a flexible retaining ring engaging outer peripheral surface of the member 2, 22 on both sides cover to sit on the base end portion of the retaining ring 21 - member 2 is a taper-shaped hooking step portion formed on the outer peripheral surface of No. 2 ; Reference numeral 10 denotes a required seal material such as a putty material applied to the inner peripheral surface of the both-side cover member 2 via a sponge body along the longitudinal direction.
11 engaged at the time from the convex strip engaging piece 4 to allowed to prevent deformation of the convex engagement members 4 in wearing cover - toward member 2 in its center portion side portion toward the radial direction for reinforcement which projects protrusion ribs, 12 substantially square form ribs for reinforcement thereof is a central portion projecting inwardly toward the radial direction from the inner wall portion of the concave engaging groove 6 so as to correspond to the ribs 11, 13 the upper cut Bed 11 is a fitting groove formed notch in the center portion of the rib 12 so allowed to fitting abutment.
In addition, 14 is an indirect live wire gripping tool such as a Yatsuko, and 15 is gripping pieces on both sides constituting the indirect live wire gripping tool 14 . 18 is an aerial distribution line for difficult snow attachment with fins 19, 20 is a core wire exposed portion of the aerial distribution line 18 for difficult snow accretion , and 23 is a poly pipe .
[0012]
Their to, embodiment constructed as described above, as shown in FIGS. 5 and 6, each side cover - each-fitting shape with member 2 by the holding ring 21 on the gripping pieces 15 of the indirect hot-gripper 14 The seal material 10 is applied to the core wire exposed portion 19 of the hard-to-snow overhead distribution line 18 while being temporarily held in a substantially half-opened shape by using the elastic force of the hinge 3. , attaching the gripping piece 15 brought closing operation, and engaged by caulking engage the concave engaging groove 6, engaging holes 7, each corresponding to ridge engaging piece 4 and the auxiliary engagement pieces 5. At this time, since the ridges engaging piece 4 and the concave engaging grooves 6 each fitting abuts freely ribs 11, 12 on the inner wall is caused to protrude, for snow accretion on the rib 11, 12 since it is possible to push-back on the hinge 3 side direction while There are shed fins 19 of the overhead distribution lines 18, always ridges engaging piece 4, the auxiliary engagement pieces 5 each concave engaging groove 6, engaging holes 7 It can be surely engaged. Further , since the latching step portion 22 is formed at the base end portion of the holding ring 21, the wire repair cover -1 b is coupled with the holding ring 21 by hooking the gripping piece 15 on the latching step portion 22. The indirect hot wire gripping tool 14 can be securely set, and the dropout can be effectively prevented.
[0013]
In addition, also when attaching to the overhead distribution electric wire which approximates the internal diameter of the electric wire repair cover-1b, although description is abbreviate | omitted, it can attach reliably like the said Example.
When the attachment of the wire repair cover-1b is completed, the gripping pieces 15 are released from the holding rings 21 to complete the attachment operation.
[0014]
Then, the poly pipe 23 is inserted into the electric wire repairing cover-1b attached to the overhead distribution line / overhead distribution line 18 for difficult snow attachment as required. At this time , since the retaining ring 21 of the wire repair cover-1b is flexible, it is appropriately bent according to the inner diameter of the poly pipe 23, and the poly pipe 23 can be inserted and attached very easily. Is something you can do. Although not shown, the wear-resistant protective tube can be inserted and mounted very easily in the same manner.
[0015]
FIGS. 8 to 15 show an electric wire repair cover-1a showing a reference example for explaining the components excluding the holding ring 21 of the present invention. The gripping piece 15 is provided on the outer peripheral surface of the both-side cover member 2 in place of the holding ring 21. Each of the gripping protrusions 8 protrudes from the gripping protrusion 8 and a pair of engaging protrusions 9 are formed on the gripping protrusion 8 to hold the indirect live wire gripping tool 14 at a predetermined position. The points differ from the above embodiment, the other parts are the same, and the same symbols indicate the same parts. In the figure, 16 is overhead distribution lines, 17 respectively indicate the exposed core portions of said cross sky distribution line 16.
[0016]
In the embodiment configured as described above, the cover members 2 on both sides are applied with the projecting pieces 8 to the inner surface of the gripping piece 15 of the indirect hot wire gripping tool 14 while utilizing the elastic force of the hinge 3. Expand and hold in a semi-open state. At this time, since the protrusions 8 are provided with the protruding protrusions 9, not only can the gripping pieces 15 be hooked and securely held, but also the drop-off can be effectively prevented. Is. Next, the seal material 10 is applied to the core wire exposed portion 17 of the overhead distribution line 16 in an outer fitting manner, the gripping piece 15 is closed, and the protrusion engaging piece 4 and the auxiliary engaging piece 5 correspond to each other. By engaging with the concave groove engaging groove 6 and the engaging hole 7, they are engaged and attached. At this time, when the wire diameter of the overhead distribution line 16 approximates to the inner diameter of the wire repair cover-1a, as shown in FIG. Is pressed in the engagement side direction, but the ridge engaging piece 4 and the groove engaging groove 6 are reinforced by the ribs 11 and 12 which are fitted and abutted to each other, so that the protrusions are engaged without being deformed outward. The piece 4 and the auxiliary engagement piece 5 can be reliably engaged with the corresponding groove engagement groove 6 and engagement hole 7 respectively. Further, since the protrusion engaging piece 4 and the auxiliary engaging piece 5 are formed on the cover member 2, the cover members 2 on both sides can be firmly engaged together.
[0017]
In addition, when attaching to the core wire exposed portion 20 of the snow distribution overhead distribution line 18, as shown in FIG. 15, the hinge 3 is applied to the ribs 11, 12 while the fins 19 of the snow distribution overhead distribution line 18 are applied. Since it can be pushed back in the lateral direction, the protrusion engaging piece 4 and the auxiliary engaging piece 5 are always securely engaged with the recess engaging groove 6 and the engaging hole 7, respectively, without being disturbed by the fin 19. It can be damned.
[0018]
In addition, in the said Example, although the rib 11 * 12 shall be each provided in a pair, it is not limited to this, The number may be increased as needed.
[0019]
【The invention's effect】
According to the first aspect of the present invention, depending on the above, the convex engaging piece and the concave engaging groove constituting the engaging member are provided for reinforcement on one inner portion of the engaging member to prevent deformation at the time of engaging. The projecting piece-like ribs project in the radial direction, and a reinforcing substantially rectangular body-shaped rib having a fitting groove for fitting and abutting the rib in the other inner portion is provided in the radial direction. In addition, since flexible holding rings are provided on the outer peripheral surfaces of the cover members on both sides, not only the overhead distribution wires having an outer diameter smaller than the inner diameter of the wire repair cover. Even in the case of an aerial distribution line having an approximate outer diameter, the engagement member must sufficiently resist the aerial distribution line that moves by pressing in the engagement side direction through the seal member due to the clamping pressure of the gripping piece. Can always be engaged and engaged without being deformed outward. Than is. In addition, even in the case of an aerial distribution line for difficult snow attachment with fins, it is possible to push back in the hinge direction while applying fins to the ribs. It can be dressed. In addition, the wire repair cover can be easily and securely set on the indirect hot wire gripping tool by an extremely simple operation of fitting the retaining ring to the gripping piece of the indirect live wire gripping tool. It is. In addition, when attaching a poly pipe or the like to a wire repair cover attached to a required overhead distribution line, the holding ring is flexible, so that it bends appropriately according to the inner diameter of the poly pipe or the like. A poly pipe or the like can be inserted and attached very easily.
[0020]
Depending above, according to the second aspect of the present invention, conductive lines repair cover - because engaging step portion on the base end portion of the retaining ring constituting a is formed, multiplied by gripping piece engaging step portion By stopping, it is possible to reliably set the electric wire repair cover on the indirect hot wire gripping tool together with the holding ring and effectively prevent the dropout .
[0021]
請 Motomeko 3 depending described above, according to the invention described claim 1, wherein the wire repair cover - a hinge with allowed to hold each-fitting shape gripping pieces of indirect hot-gripper with its retaining ring The seal material is applied to the aerial distribution line while being temporarily fixed and held approximately half-opened using elastic force, and the cover piece on both sides is engaged by engaging the gripping piece. Therefore, the cable repair cover can be easily and securely set to the indirect hot wire gripping tool, and the engagement member can always be securely engaged. Thus, the wire repair cover can be easily and reliably and efficiently installed.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a plan view of the embodiment shown in FIG.
FIG. 3 is a bottom view of the embodiment shown in FIG . 1 ;
4 is a side view of the embodiment shown in FIG . 1. FIG.
FIG. 5 is a cross-sectional view showing a state where the electric wire repair cover 1b of the embodiment is set on the indirect hot wire gripping tool 14 ;
FIG. 6 is a cross-sectional view showing a state where the electric wire repair cover 1b of the embodiment is attached to the overhead snow distribution line 18 for difficult snowfall .
7 is a cross-sectional view showing a state in which a poly pipe 23 is inserted into the electric wire repair cover 1b of the embodiment . FIG.
FIG. 8 is a front view showing a reference example for explaining the components excluding the retaining ring 21 of the present invention.
9 is a plan view of a reference example for explaining components other than the retaining ring 21 shown in FIG . 8. FIG.
10 is a bottom view of a reference example for explaining components other than the retaining ring 21 shown in FIG . 8; FIG.
FIG. 11 is a side view of a reference example for explaining components other than the retaining ring 21 shown in FIG . 8;
12 is a cross-sectional view taken along the line AA of a reference example for explaining the components excluding the retaining ring 21 shown in FIG.
13 is a cross-sectional view taken along the line BB of a reference example for explaining the components excluding the retaining ring 21 shown in FIG.
FIG. 14 is a cross-sectional view showing a state in which the wire repair cover-1a of the reference example for explaining the components excluding the retaining ring 21 is attached to the overhead distribution line 16;
FIG. 15 is an enlarged cross-sectional view illustrating a state where the electric wire repair cover-1a of the reference example for explaining the constituent parts excluding the retaining ring 21 is attached to the hard-to-snow overhead distribution line 18.
[Explanation of symbols]
Cover for 1b electric wire repair
2 cover - member 3 hinge 4 projections engaging pieces 6 concave engaging groove 10 - sealing material 11 projecting piece shaped rib 12 substantially rectangular form rib 13 groove 14 indirect hot-gripper 15 gripping piece 16 fictitious distribution Electric wire 18 Overhead distribution line for hard-to-fall snow 21 Retaining ring 22 Suspended step 23 Poly pipe

Claims (3)

The cover member is formed of a pair of cover members on both sides that are substantially semi-cylindrical, and one end portion of each cover member is connected to be openable and closable via an elastic hinge along the longitudinal direction. It is possible to engage with each other via an engaging member composed of a protruding line engaging piece and a recessed line engaging groove, and a seal member is provided on the inner peripheral surface of each cover member. In an electric wire repair cover configured to be attached to an aerial distribution line while being held with a gripping tool, the convex engagement pieces and the concave engagement grooves constituting the engagement member are deformed during engagement. In order to prevent this, a reinforcing protruding piece-like rib projects in the radial direction at one of the inner portions, and the other inner portion has a fitting groove for fitting and abutting the rib. A substantially square-shaped rib for use in the projecting direction is provided in the radial direction, and on the outer peripheral surface of the cover member on both sides, Flexible retaining ring so allowed to hold allowed fitted on the gripping pieces of the gripping tool is characterized in that formed by each projecting, wire repair cover -. 2. A cover for repairing an electric wire according to claim 1, wherein a hooking step is formed on the base end of the holding ring so as to hook the gripping piece . The electric wire repair cover according to claim 1 is held on the holding pieces of the indirect live wire holding tool with the holding ring in an external fitting shape, and is temporarily held in a substantially half-opened shape by using the elastic force of the hinge. An electric wire repair cover, wherein the seal material is applied to the aerial distribution line in an external fitting manner, and the gripping pieces are closed and the cover members on both sides are engaged with the engagement members. -Mounting method.

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