JP2015035276A - Detachable linear sleeve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachable linear sleeve which allows for simplification of the compression work of a connection sleeve, that has been difficult conventionally in a bucket, by dividing the connection sleeve into two and performing the work separately on the ground, and then connecting two sleeves by screwing in the bucket.SOLUTION: A detachable linear sleeve 1 includes: a first sleeve 2 having a first wire insertion hole 22 formed on one end side, and a male screw part 23 formed on the other end side; and a second sleeve 3 having a second wire insertion hole 32 formed on one end side, and a female screw part 33 formed on the other end side and into which the male screw part 23 can be screwed.

Description

  The present invention relates to a linear sleeve that conducts and connects conductive wires of an electric wire, and more particularly, to a separate linear sleeve that is divided into two so that both can be screwed together.

  Conventionally, when a high-voltage distribution line is disconnected due to an accident or the like, for example, as shown in FIG. 5, a connection sleeve 60 made of copper or aluminum is used, and both end portions of the connection sleeve 60 are used. The conductive wire 63 which peeled off the outer sheath 65 of the wire 64 which was disconnected at the tubular opening was inserted, and the tubular connecting tube portion 62 which was inserted was compressed and connected to conduct a restoration work (for example, Patent Document 1).

JP-A-11-233166

  However, the following problems have been pointed out when recovery work is performed in the bucket of an aerial work vehicle using such a conventional connection sleeve. For example, when compressing the tubular connecting tube portion of the connection sleeve, it must be compressed at the same time on the left and right, but because the inside of the bucket is narrow, it was forced to compress with an unreasonable posture, causing physical fatigue for the operator . Further, since the compression work is performed with an unreasonable posture, the compression cannot be performed well, and the connection sleeve may be bent, and an extra work of correcting the connection sleeve has occurred. As described above, the compression work of the connection sleeve in the narrow bucket has caused the worker's physical strength consumption and the work efficiency to deteriorate.

  The present invention has been made to solve the above-described problems, and the compression work of the connection sleeve, which has conventionally been difficult in the bucket, is performed separately on the ground by dividing the connection sleeve into two. Then, an object of the present invention is to provide a separable linear sleeve that can be easily operated by screwing two sleeves in a bucket.

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

  (1) A first sleeve in which a first electric wire insertion hole is formed on one end side and a male screw portion is formed on the other end side, a second electric wire insertion hole is formed on one end side, and the male screw portion on the other end side And a second sleeve formed with a threaded female thread portion.

According to (1), the linear sleeve separable into two includes a first sleeve and a second sleeve. The first sleeve has a first electric wire insertion hole on one end side and a male screw portion on the other end side, and the second sleeve can be screwed on the second electric wire insertion hole on one end side and the male screw portion on the other end side. Provided with a female thread portion. And it becomes possible to conduct an electric wire by screwing and connecting the male screw part and the female screw part. Thereby, when repairing the disconnection of a high voltage | pressure wiring, the linear sleeve isolate | separated into two on the ground can be compressed separately, respectively, and the said linear sleeve compressed in the bucket on a pillar can be easily connected with a screw.
Further, by adjusting the degree of connection between the male thread portion of the first sleeve and the female thread portion of the second sleeve, the slackness of the distribution line can be adjusted.

  (2) In (1), a first outer peripheral thread groove formed on an outer peripheral surface on one end side with respect to a portion where the male screw portion is formed on the first sleeve, and an outer peripheral surface on the other end side of the second sleeve A separable linear sleeve further comprising: a second outer peripheral thread groove formed on the first outer peripheral thread groove; and a nut that can be screwed into the first outer peripheral thread groove and the second outer peripheral thread groove.

  According to (2), in addition to the screw connection between the male screw portion of the first sleeve and the female screw portion of the second sleeve, the outer surface of the other end side of the second sleeve, and the first sleeve It can be tightened more firmly by the outer peripheral thread groove formed on the outer peripheral surface on one end side than the part where the male thread is formed, and the nut screwed into the outer peripheral thread groove. Thereby, it becomes possible to prevent the screw from loosening.

  (3) The separation type linear sleeve according to (2), wherein the screw groove of the outer peripheral screw groove portion is formed in a direction opposite to the screw groove of the female screw portion.

  According to (3), the screw groove of the outer peripheral screw groove portion is formed in the opposite direction to the screw groove of the female screw portion. Therefore, even if a force is applied to the separation type straight sleeve in a direction in which the male screw portion of the first sleeve and the female screw portion of the second sleeve are loosened, a force is applied to the nut in the tightening direction. Therefore, the separation type linear sleeve can be made more difficult to loosen.

  (4) In (1) to (3), the first sleeve further includes a first tightening portion having a polygonal cross section disposed on one end side of the first sleeve, and the second sleeve includes the first sleeve. A separation-type linear sleeve further comprising a second fastening portion having a polygonal cross section disposed on one end side of the two sleeves.

  According to (4), the wire insertion hole sides of the first sleeve and the second sleeve are each provided with a polygonal tightening portion. Thus, after manually connecting the male screw portion of the first sleeve and the female screw portion of the second sleeve, the tightening portion can be further rotated with a tool such as a spanner and firmly tightened from both sides of the linear sleeve. It becomes possible.

  According to the present invention, the compression operation of the connection sleeve, which has been difficult to work in the bucket in the past, is performed separately on the ground by dividing the connection sleeve into two, and then the two sleeves on the pillar in the bucket It is possible to provide a separation type linear sleeve that can be easily screwed and connected with screws, and that can simplify the work.

It is a figure which shows the external appearance of the separation-type linear sleeve which concerns on one Embodiment of this invention. It is sectional drawing of FIG. It is a situation figure (compression process) of disconnection restoration work of a high voltage distribution line using the separation type straight sleeve concerning the present invention. It is a situation figure (connection process) of disconnection restoration work of a high voltage distribution line using a separation type straight sleeve concerning the present invention. It is a figure which shows the external appearance of the conventional compression-type connection sleeve.

Hereinafter, a preferred embodiment of the separation type linear sleeve of the present invention will be described with reference to FIGS.
For example, as shown in FIG. 3, the separation type linear sleeve of the present invention is a linear sleeve used for recovery work when a high-voltage distribution line is disconnected due to an accident or the like, and from the wire insertion holes at both ends of the sleeve. A conductive wire from which the outer sheath of the disconnected wire is peeled off is inserted, the inserted portion is compressed, and both sleeves are conductively connected to be used for restoration work.

  As shown in FIG. 1, the separation-type linear sleeve 1 of the present invention includes a first sleeve 2, a second sleeve 3, and a nut 4.

As shown in FIGS. 1 and 2, the first sleeve 2 includes a first body portion 21, a first electric wire insertion hole 22, a male screw portion 23, a first outer peripheral thread groove portion 24, and a first tightening portion 25. And comprising.
The first main body 21 is formed in a cylindrical shape. The diameter of the first main body portion 21 is configured to be thicker than the diameter of the electric wire inserted into the first sleeve 2.

  The first electric wire insertion hole 22 is formed on one end side of the first main body 21, that is, one end side of the first sleeve 2. The first electric wire insertion hole 22 extends from the end surface on the one end side of the first main body portion 21 by a predetermined length in the longitudinal direction. The diameter of the first electric wire insertion hole 22 is configured to be slightly larger than the diameter of the electric wire to be inserted.

  The male screw portion 23 is provided on the other end side of the first main body portion 21, that is, on the other end side of the first sleeve 2. The male screw portion 23 is disposed coaxially with the first main body portion 21 and extends from the end face on the other end side of the first main body portion 21. The diameter of the male screw portion 23 is configured to be smaller than the diameter of the first main body portion 21.

The first outer peripheral thread groove portion 24 is formed on the outer peripheral surface on the other end side of the first main body portion 21. That is, the first outer peripheral thread groove portion 24 is formed on the outer peripheral surface on one end side of the first sleeve 2 with respect to the portion where the male screw portion 23 is formed. The thread groove of the first outer peripheral thread groove portion 24 is formed in the opposite direction to the thread groove of the male thread portion 23.
The first tightening portion 25 is provided on the outer peripheral surface on one end side of the first main body portion 21. The first tightening portion 25 has a shape in which the cross section in the radial direction of the first sleeve 2 is a polygonal shape (in the present embodiment, a regular octagon).

As shown in FIGS. 1 and 2, the second sleeve 3 includes a second main body portion 31, a second electric wire insertion hole 32, a female screw portion 33, a second outer peripheral thread groove portion 34, and a second tightening portion 35. And comprising.
The 2nd main-body part 31 is formed in a cylindrical shape. The diameter of the second main body portion 31 is configured to be equal to the diameter of the first main body portion 21.

  The second electric wire insertion hole 32 is formed on one end side of the second main body 31, that is, one end side of the second sleeve 3. The second electric wire insertion hole 32 extends from the end surface on the one end side of the second main body portion 31 by a predetermined length in the longitudinal direction. The diameter of the second electric wire insertion hole 32 is configured to be slightly larger than the diameter of the electric wire to be inserted.

  The female screw portion 33 is provided on the other end side of the second main body portion 31, that is, on the other end side of the second sleeve 3. The female thread portion 33 extends a predetermined length in the longitudinal direction from the end surface on the other end side of the second main body portion 31 toward one end side. The female screw portion 33 is formed in a size that allows the male screw portion 23 to be screwed together. Further, the length of the female screw portion 33 is configured to be substantially equal to the length of the male screw portion 23.

The second outer peripheral thread groove portion 34 is formed on the outer peripheral surface on the other end side of the second main body portion 31. The thread groove of the second outer peripheral thread groove portion 34 is formed in the same direction as the thread groove of the first outer peripheral thread groove portion 24. In the second sleeve 3, the length of the portion where the second outer peripheral thread groove 34 is formed is shorter than the width of the nut 4 described later (for example, about 50% of the width of the nut 4).
The second tightening portion 35 is provided on the outer peripheral surface on one end side of the second main body portion 31. The second tightening portion 35 has a shape in which the radial cross section of the second sleeve 3 is a polygonal shape (in the present embodiment, a regular octagon).

  The first sleeve 2 and the second sleeve 3 described above have conductivity and are made of a metal that can be compressed when a predetermined force is applied, for example, copper or aluminum.

  As shown in FIG. 1, the nut 4 is attached in the vicinity of the connection portion between the first sleeve 2 and the second sleeve 3. More specifically, the nut 4 is configured to be able to be screwed into the first outer peripheral thread groove portion 24 and the second outer peripheral thread groove portion 34. That is, the nut 4 is formed with a thread groove formed in a direction corresponding to the thread grooves of the first outer periphery screw groove portion 24 and the second outer periphery screw groove portion 34.

Next, the procedure of the disconnection recovery operation using the separation type linear sleeve 1 of the present embodiment will be described with reference to FIGS. 3 and 4.
As shown in FIG. 3 (A), the restoration work using the separation-type linear sleeve 1 includes the sleeve compression process work on the ground side when the wire of the high-voltage distribution line is disconnected due to an accident, etc. As shown to A), it has the connection process operation | work of the sleeve performed in a bucket.

  As shown in FIG. 3, the compression process work is an operation of inserting the broken wires into the linear sleeves divided into two parts and compressing the first main body portion 21. (B) to (D) of FIG. 3 are diagrams showing the state of each work.

Initially, the conductive wire 51 which peeled the outer sheath of the disconnected electric wire 5 is inserted from the 1st electric wire insertion hole 22 formed in the one end side of the 1st sleeve 2 (refer FIG.3 (B)). At this time, in order to compress the first main body portion 21 and to electrically connect the conductive wire 51 and the first main body portion 21, the conductive wire 51 is inserted to the deep portion of the first electric wire insertion hole 22.
Next, with the conductive wire 51 inserted, the first main body 21 is compressed using a compression tool (see FIG. 3C). The compression at this time is performed several times in order from an arbitrary position on the first tightening portion 25 side to an arbitrary position on the first outer peripheral thread groove portion 24 side.

  When the compression process work for the first sleeve 2 is completed, the compression process work for the second sleeve 3 is performed in the same manner. Also in this case, the compression work is performed several times in order from an arbitrary position on the second tightening portion 35 side to an arbitrary position on the second outer peripheral thread groove portion 34 side.

When the compression operation of the first sleeve 2 and the second sleeve 3 is completed, the nut 4 is manually screwed and connected to the first outer peripheral thread groove portion 24 of the first sleeve 2 (see FIG. 3D).
This completes the compression process work on the ground side.

  Next, as shown in FIG. 4, the sleeve connection process work performed in the bucket of an aerial work vehicle will be described.

  As shown in FIG. 4, the connection process work is an operation of screwing and connecting the first sleeve 2 and the second sleeve 3 that have been compressed on the ground side with screws. 4B to 4D are diagrams showing the state of each work.

  First, as shown in FIG. 4B, the first body portion 21 and the second body portion 31 are gripped, and the male screw portion 23 of the first sleeve 2 is screwed and connected to the female screw portion 33 of the second sleeve 3. .

  Next, as shown in FIG. 4C, the first fastening portion 25 of the first sleeve 2 and the second fastening portion 35 of the second sleeve 3 are rotated from both ends by using a tool such as a spanner. The male screw portion 23 of the first sleeve 2 is screwed into the female screw portion 33 of the second sleeve 3 and tightened. This tightening is adjustable.

  Next, as shown in FIG. 4D, the nut 4 that has been screwed into the first outer peripheral thread groove 24 is moved to the second outer peripheral thread groove 34 side by hand or a spanner. Here, in a state where the nut 4 is moved to the second outer peripheral thread groove portion 34 side, the nut 4 is disposed so as to straddle the connection portion between the first sleeve 2 and the second sleeve 3.

  The above is the sleeve connecting process performed in the bucket. In addition, when adjusting the slackness of the high-voltage distribution line, the male screw portion 23 of the first sleeve 2 is screwed to the female screw portion 33 of the second sleeve 3. The length of the linear sleeve 1 can be adjusted according to the degree of matching.

  According to the separation type linear sleeve 1 demonstrated above, there exist the following effects.

  (1) The separation type linear sleeve 1 is formed with a first sleeve 2 in which a first wire insertion hole 22 is formed on one end side and a male screw portion 23 is formed on the other end side, and a second wire insertion hole 32 is formed on one end side. And the second sleeve 3 in which the female thread portion 33 is formed on the other end side. As a result, when repairing the disconnection of the high-voltage wiring, it is possible to compress the linear sleeves divided into two on the ground separately, and easily connect the compressed linear sleeves with screws in the buckets on the pillars become. Further, by eliminating the compression work in the bucket, the disconnection recovery work can be easily performed as compared with the conventional case, and the fatigue of the operator is also reduced. Further, since the compression work can be performed on the ground with a large work space, the problem of bending the straight sleeve is eliminated, and it is possible to improve quality and shorten work time (improve work efficiency). In addition, since the disconnection recovery work is shortened compared to the conventional case, the power failure time is shortened and the customer service is improved.

  (2) The separable linear sleeve 1 includes a first outer peripheral thread groove portion 24 formed on the outer peripheral surface of the first sleeve 2, a second outer peripheral thread groove portion 34 formed on the outer peripheral surface of the second sleeve 3, And a nut 4 that can be screwed into the first outer peripheral thread groove portion 24 and the second outer peripheral thread groove portion 34. Thereby, in addition to the screw connection between the male screw portion 23 and the female screw portion 33, the nut 4 and the first outer peripheral screw groove portion 24 and the second outer peripheral screw groove portion 34 are connected by screws from the outside, thereby further strengthening. Can be tightened. Furthermore, it is possible to prevent the screws from loosening.

  (3) The thread grooves of the first outer peripheral thread groove part 24 and the second outer peripheral thread groove part 34 are configured such that the thread grooves are cut in the direction opposite to the thread groove of the female thread part 33. As a result, even if a force is applied to the separation type straight sleeve 1 in the direction in which the male screw portion 23 of the first sleeve 2 and the female screw portion 33 of the second sleeve 3 are loosened, the nut 4 is forced in the tightening direction. Will be added. Therefore, the separation type linear sleeve 1 can be made more difficult to loosen.

  (4) The first sleeve 2 and the second sleeve 3 are provided with a polygonal first tightening portion 25 and a second tightening portion 35 on the wire insertion end side, respectively. Thus, after manually connecting the male screw portion 23 of the first sleeve 2 and the female screw portion 33 of the second sleeve 3, the first tightening portion 25 and the second tightening portion 35 are further connected to a spanner or the like. It can be rotated with a tool and firmly tightened from both sides of the separation type linear sleeve 1. Further, by adjusting the degree of connection between the male screw portion 23 of the first sleeve 2 and the female screw portion 33 of the second sleeve 3, the slackness of the distribution line can be adjusted.

  The preferred embodiment of the separation type linear sleeve of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed.

DESCRIPTION OF SYMBOLS 1 Separable linear sleeve 2 1st sleeve 21 1st main body part 22 1st electric wire insertion hole 23 Male screw part 24 1st outer periphery thread groove part 25 1st fastening part 3 2nd sleeve 31 2nd main body part 32 2nd electric wire insertion hole 33 Female thread portion 34 Second outer peripheral thread groove portion 35 Second tightening portion 4 Nut 5 Electric wire 51 Conductive wire 60 Connection sleeve 61 Connection sleeve body 62 Connecting cylinder portion 63 Conductive wire 64 Electric wire 65 Outer sheath

Claims (4)

A first sleeve in which a first wire insertion hole is formed on one end side and a male screw portion is formed on the other end side;
A separable linear sleeve comprising: a second sleeve having a second wire insertion hole formed on one end side and a female screw portion formed on the other end side that can be screwed into the male screw portion. A first outer peripheral thread groove formed on an outer peripheral surface on one end side of a portion where the male thread portion in the first sleeve is formed;
A second outer peripheral thread groove formed on the outer peripheral surface on the other end side of the second sleeve;
The separable linear sleeve according to claim 1, further comprising a nut that can be screwed into the first outer peripheral thread groove and the second outer peripheral thread groove.   3. The separation type linear sleeve according to claim 2, wherein the thread grooves of the first outer peripheral thread groove part and the second outer peripheral thread groove part are formed in a direction opposite to the thread groove of the female thread part. The first sleeve further includes a first tightening portion having a polygonal cross section disposed on one end side of the first sleeve,
The separable linear sleeve according to any one of claims 1 to 3, wherein the second sleeve further includes a second tightening portion having a polygonal cross section disposed on one end side of the second sleeve.

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