JP4463161B2 - Insulation cover for distribution line - Google Patents

Description

  The present invention relates to an insulating cover for a distribution line that insulates a retaining portion, a branching portion, or the like of the distribution line.

A distribution line insulation cover for insulatingly covering a high-voltage retention clamp and a distribution line is attached to a retaining part or a branching part of a distribution line (high-voltage line or the like) laid (built) on a power pole or the like. In this insulating cover for distribution lines, for example, a pair of substantially bottomed semi-cylindrical cap members are connected via a hinge so as to be opened and closed, and an engagement piece and an engagement hole are formed at the free end of the cap member. ing. And both cap members are closed in the state which accommodated the distribution line etc. in the cap member, and both cap members are locked by engaging an engagement piece with an engagement hole (press-fit and latch) ( (For example, refer to Patent Document 1). Further, in such an insulating cover for distribution lines, since both cap members are locked only by engagement between the engagement piece and the engagement hole, the engagement piece and the engagement piece are prevented from being easily released. Engagement with the engagement hole is strengthened.
JP 2002-17034 A

  By the way, when the distribution line is replaced or when the life of the distribution cover insulation cover is reached, the distribution line insulation cover may have to be removed. In such a case, in the insulation cover for distribution lines as described in the above-mentioned Patent Document 1, it takes skill and a long time to remove it. That is, since both cap members are locked in a state where the engagement piece is firmly engaged with the engagement hole, the tip of a thin tool is engaged to release this engagement (lock). It must be screwed into the part and loosened and released while twisting. In addition, when such work is performed, the distribution line is installed on a power pole or the like, so that the work place is narrow and high, and the work is difficult to work and is in an unstable posture. For this reason, such release work (removal work) requires high skill, great labor and time, and the work cost is high. Further, since the tool is released while being twisted, the engaging portion is damaged, and the removed insulating cover for the distribution line cannot be reused as it is, which may lead to waste of resources.

  Then, an object of this invention is to provide the insulating cover for distribution lines which can be removed easily and safely.

In order to achieve the above object, the invention according to claim 1 is an insulating cover for a distribution line that covers a retaining portion, a branching portion, and the like of the distribution line by combining the semi-container-like first cap and the second cap. The first cap and the second cap are connected to each other through a hinge so that the first cap and the second cap can be freely opened and closed. A plate-like press-fitting plate curved in the width direction is provided at the free end of the first cap. At the end, there is provided a press-fit plate in which a stop edge protrudes on both sides in the width direction and a press-fit plate is press-fitted between the stop edge and the stop edge. The cap and the second cap are locked in a closed state, and when the press-fit plate is compressed from both sides, the press-fit plate is bent and released from the press-fit plate, thereby releasing the lock.
(Function)
The first cap and the second cap are closed together while covering the retaining portion or branching portion of the distribution line, and the first cap and the second cap are locked by press-fitting the press-fit plate into the press-fit plate. . Further, by compressing the press-fit plate from both sides, the press-fit plate is released from the press-fit plate and the lock is released.

According to a second aspect of the present invention, in the insulating cover for a distribution line according to the first aspect, an engagement portion is provided on the press-fit plate or the press-fit plate, and the engagement hole into which the engagement portion is engaged is covered. It is provided on the press-fitting plate or the press-fitting plate.
(Function)
By pressing the press-fitting plate into the press-fitted plate while engaging the engaging portion with the engaging hole, the first cap and the second cap are locked by the engagement and press-fitting, and the press-fitting plate The press-fitted plate is positioned and fixed.

  According to invention of Claim 1, since the lock | rock with a 1st cap and a 2nd cap is cancelled | released by compressing a press-fit board from both sides, the insulating cover for distribution lines can be removed easily. . In addition, since it is only compressed, it is possible to compress the press-fitted plate from both sides with an indirect hot wire tool such as an insulating Yatco and remove the press-fitted plate from the press-fitted plate. For this reason, the insulation cover for distribution lines attached to the holding | maintenance part etc. of the distribution line currently constructed by the utility pole etc. can be safely removed using an indirect hot wire tool. As a result, it is possible to easily and safely perform the removal work of the insulating cover for power distribution lines without requiring a high degree of skill or a great deal of labor and time. In addition, if the press-fitted plate is compressed from both sides, the press-fitted plate is detached from the press-fitted plate, so that the press-fitted plate and the press-fitted plate are not damaged, and the removed distribution line insulation cover can be reused as it is. .

  According to the second aspect of the present invention, the first cap and the second cap are locked by the engagement and press-fitting, and the press-fitting plate and the press-fitted plate are positioned and fixed by the engagement. The 1st cap and the 2nd cap are locked more firmly. For this reason, the first cap and the second cap are not opened in the attached state, and the retaining portion, the branch portion, and the like of the distribution line can be reliably covered with an insulating cover.

  Hereinafter, the present invention will be described based on the illustrated embodiments.

  FIG. 1 is a front view of a high-pressure tension clamp cover 1 (insulation cover for distribution lines) according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a right side view thereof. The high-pressure tension clamp cover 1 is made of a flame-retardant resin and insulates the high-voltage tension clamp (not shown) attached to the retaining portion of the high-voltage electric wire L1 (distribution line) installed on the utility pole P. It is.

  The high-pressure tension clamp cover 1 includes a semi-container-shaped first cap 2 and a second cap 3, and the first cap 2 and the second cap 3 are connected to each other via a hinge 4 so as to be opened and closed. And in the state which closed the 1st cap 2 and the 2nd cap 3, the storage chamber 1a which covers the high voltage | pressure retention clamp and the edge part of the high voltage electric wire L1 and the jumper wire L2 (distribution line), and the front-end | tip of a high voltage | pressure retention clamp A clamp port 1b for exposing the side (insulator), a first electric wire port 1c and a second electric wire port 1d for passing the high-voltage electric wire L1 and the jumper wire L2 are formed. In addition, plate-shaped gripping portions 21 and 31 are formed at the free ends of the first cap 2 and the second cap 3, respectively. The gripping portions 21 and 31 are gripped and the first cap 2 and the second cap 3 can be opened and closed.

  Further, at the free ends of the first cap 2 and the second cap 3, the press-fitting plate 22 and the press-fitted plate 32 are respectively provided on both outer sides of the grip portions 21 and 31 (on the clamp port 1b and the first electric wire port 1c side). And are formed. The press-fit plate 22 is plate-shaped as shown in FIGS. 4A and 4B, and is curved like a bow in the longitudinal direction (width direction) of the first cap 2. That is, the central portion is flat and both side portions are linearly inclined, so that the press-fitting plate 22 bends in the width direction. Furthermore, the protruding edge 22a is formed in the both-sides edge of the press-fit board 22, and the engagement pin 22b (engagement part) is provided in the center part. The engaging pin 22b is cylindrical and has a protruding portion 22c formed at the tip. The projecting portion 22c has a base portion that is slightly larger than the outer periphery of the engaging pin 22b, and a tip portion that is formed in a conical shape. On the other hand, the press-fit plate 32 has a flat plate shape, and a stop edge 32a protrudes on both sides in the longitudinal direction (width direction) of the second cap 3, and the press-fit plate 22 is press-fitted between the stop edge 32a and the stop edge 32a. As described above, the distance between the stop edge 32a and the stop edge 32a is set. An engagement hole 32b is formed at the center, and the size (diameter) of the engagement hole 32b is such that the overhanging portion 22c of the engagement pin 22b can be inserted, and there is a gap between the engagement pin 22b and the engagement pin 22b. It is set to be as small as possible. Then, with the engaging pin 22b inserted into the engaging hole 32b and the overhanging portion 22c engaged with the periphery of the engaging hole 32b, the protruding edge 22a of the press-fitting plate 22 hits the stop edge 32a and the press-fitting plate 22 Each positional relationship (the height of the protruding edge 22a, the thickness of the press-fit plate 32, the width of the press-fit plate 22, etc.) is set so as to be press-fitted. The engagement force (engagement allowance) between the overhanging portion 22c and the engagement hole 32b is set to such an extent that the press-fit plate 22 is disengaged from the press-fit plate 32 as will be described later.

  Further, with the press-fit plate 22 being press-fitted into the press-fit plate 32 in this way, the press-fit plate 32 is compressed from both sides (both stop edges 32a) by an insulating Y-tool M (indirect hot wire tool) described later. As shown in FIG. 4C, the strength and springiness (elasticity) of the press-fit plate 22 and the press-fit plate 32 are set so that the press-fit plate 22 bends and the press-fit plate 22 is detached from the press-fit plate 32. Yes. Moreover, the pressure input to the press-fit plate 32 of the press-fit plate 22 is set as large as possible. That is, the material strength, the spring property, the plate thickness, the plate width of the press-fitted plate 22 and the press-fitted plate 32 are set so that the press-fitting plate 22 and the press-fitted plate 32 are as large as possible within the range in which the press-fitted plate 22 is separated from the press-fitted plate 32 by the insulating YATCO The press-fitting allowance (the amount by which the press-fit plate 22 is compressed by press-fitting into the press-fit plate 32) is set.

  Next, how to attach and detach such a high pressure tension clamp cover 1 will be described.

  First, in order to attach the high-voltage retention clamp cover 1 to the retaining portion of the high-voltage electric wire L1, the first cap 2 and the second cap 3 are opened, the high-pressure retention clamp is positioned in the storage chamber 1a, and the tip of the high-pressure retention clamp The part is positioned at the clamp opening 1b. Further, the first cap 2 and the second cap 3 are closed together with the high-voltage wire L1 positioned at the first wire port 1c and the jumper wire L2 positioned at the second wire port 1d. When the press-fitting plate 22 is pressed against the press-fitted plate 32 while the engagement pin 22b is inserted into the engagement hole 32b, the overhanging portion 22c is engaged with the periphery of the engagement hole 32b, and the stop edge 32a and the stop edge 32a are engaged. The press-fitting plate 22 is press-fitted between the two. By performing such pressing on the two press-fit plates 22, the first cap 2 and the second cap 3 are locked. Thereby, as shown in FIG. 5, the high voltage | pressure retention clamp cover 1 is attached to the securing part of the high voltage electric wire L1.

  In order to remove the high-voltage tension clamp cover 1 when the high-voltage electric wire L1 is replaced or when the life of the high-voltage tension clamp cover 1 is reached, the following may be performed. Here, in this embodiment, it shall remove using the insulating Yatco M as shown in FIG. This insulated Yatco M is a tool widely used in the indirect hot wire method of the uninterruptible power method, and detailed explanation is omitted here, but a pair of clamps M3 is provided at the ends of the main pole M1 and the movable pole M2. The clamp M3 is opened and closed by operating the lever M4 attached to the other end of the movable pole M2.

  In order to remove the high-pressure tension clamp cover 1 using such an insulating jacket M, the press-fit plate 32 may be sandwiched and compressed by the clamp M3 from both sides. As a result, as shown in FIG. 4 (c), the press-fitting plate 22 and the press-fitted plate 32 bend and the engagement pin 22b comes out of the engagement hole 32b, and the projecting edge 22a comes out of the stop edge 32a. The plate 22 is detached from the press-fit plate 32. By performing such compression on the two press-fit plates 32, the lock between the first cap 2 and the second cap 3 is released. And what is necessary is just to hold | grip the holding parts 21 and 31 with the clamp M3, open the 1st cap 2 and the 2nd cap 3, and remove the high voltage | pressure retention clamp cover 1. FIG.

  As described above, according to the high pressure tension clamp cover 1, the press-fit plate 32 is compressed from both sides, so that the press-fit plate 22 is detached from the press-fit plate 32, and the first cap 2 and the second cap 3. Since the lock is released, the high-pressure retaining clamp cover 1 can be easily removed. Moreover, since it can be removed using the insulating yoke M, the high-voltage tension clamp cover 1 attached to the high-voltage electric wire L1 installed on the utility pole P can be safely removed. As a result, it is possible to easily and safely perform removal and replacement work of the high-pressure tension clamp cover 1 without requiring high skill, great labor and time. Further, if the press-fitted plate 32 is compressed from both sides, the press-fitted plate 22 is detached from the press-fitted plate 32, so that the press-fitted plate 22 and the press-fitted plate 32 are not damaged, and the removed high-pressure tension clamp cover 1 within the life is removed. It can be reused as it is.

  On the other hand, since the pressure input is set as large as possible within the range in which the press-fit plate 22 is removed from the press-fit plate 32 as described above, the lock between the first cap and the second cap becomes strong. In addition, the overhanging portion 22c of the engagement pin 22b is engaged with the periphery of the engagement hole 32b, and the engagement pin 22b is inserted into the engagement hole 32b so that the press-fit plate 22 and the press-fit plate 32 are positioned and fixed. Therefore, the first cap 2 and the second cap 3 are locked more firmly. For this reason, in the attachment state, the 1st cap 2 and the 2nd cap 3 do not open, but the insulation part of the high voltage electric wire L1 can be reliably covered with an insulation. As described above, the high pressure tension clamp cover 1 has a strong lock between the first cap 2 and the second cap 3 and can be easily released when necessary.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the present embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention. It is. For example, the press-fit plate 22 and the press-fit plate 32 are provided not only in the above-described high-pressure tension clamp cover 1 but also in a high-pressure branch clamp cover that insulates and covers the branch portion of the high-voltage electric wire L1. Also good. Further, the shape of the press-fit plate 22 and the press-fit plate 32 is not limited to the above shape, and may be a press-fit plate 23 having a shape as shown in FIG. That is, it is good also as the press-fit board 23 in which the center part was flat form and the both sides inclined in a curve. Furthermore, the engagement pin 22b and the overhanging portion 22c are not necessarily provided. The required locking force (stiffness) between the first cap and the second cap and the pressure of the press-fit plate 22 to the press-fit plate 32 are not necessarily provided. The necessity may be determined according to the input. In this embodiment, the engagement pin 22b is provided in the press-fit plate 22, and the engagement hole 32b is provided in the press-fit plate 32. Conversely, the engagement pin is provided in the press-fit plate and the engagement hole is provided. Of course, it may be provided on the press-fitting plate.

The front view of the high voltage | pressure retention clamp cover concerning embodiment of this invention. The top view of the high voltage | pressure retention clamp cover concerning embodiment of this invention. The side view (right side view of Drawing 1) of the high voltage tension clamp cover concerning the embodiment of the present invention. The top view (a) and the AA sectional view (b) which show the state where the press-fit board of the high-pressure tension clamp cover concerning the embodiment of the present invention was press-fit into the press-fit board, (c) shows the press-fit board. Sectional drawing which shows the state compressed. The perspective view which shows the state which attached the high voltage | pressure retention clamp cover concerning embodiment of this invention to the securing part of a high voltage electric wire. The front view of the insulation Yatco concerning the embodiment of the present invention. Sectional drawing which shows the state by which the 2nd press-fit board of the high-pressure tension clamp cover concerning embodiment of this invention was press-fit in the press-fit board.

Explanation of symbols

1 High pressure retention clamp cover (insulation cover for distribution line)
2 1st cap 21 Grasping part 22 Press-fit plate 22a Projection edge 22b Engagement pin (engagement part)
22c Overhang part 3 2nd cap 31 Grasping part 32 Press-fit plate 32a Stopping edge 32b Engagement hole 4 Hinge L1 High voltage electric wire (distribution line)
L2 jumper wire (distribution line)
P Telephone pole M Insulated Yatco (Indirect hot wire tool)

Claims (2)

A distribution line insulation cover that covers a retaining portion, a branching portion, and the like of the distribution line by combining the semi-container-shaped first cap and the second cap,
The first cap and the second cap are connected to each other through a hinge so that the first cap and the second cap can be freely opened and closed. A plate-like press-fitting plate curved in a width direction is provided at a free end of the first cap. A free end portion of the cap is provided with a press-fit plate in which a stop edge protrudes on both sides in the width direction in a plate shape, and the press-fit plate is press-fitted between the stop edge and the stop edge. When press-fitted into a plate, the first cap and the second cap are locked in a closed state, and when the press-fitted plate is compressed from both sides, the press-fitted plate is bent and released from the press-fitted plate to release the lock. The
Insulation cover for distribution lines. An engagement part is provided in the press-fitted plate or the press-fitted plate, and an engagement hole in which the engagement part is engaged is provided in the press-fitted plate or the press-fitted plate.
The insulating cover for distribution lines according to claim 1.

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