JP2011222372A - Insulator set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulator set in which a connection mechanism arranged at an end of a porcelain body can be easily rotated in an adjustable manner around the entire axis of the end of the porcelain body, thereby improving the efficiency of insulator attachment work on site.SOLUTION: An insulator set comprises: a cap 5 fixedly attached to a leading end of a porcelain body 3 in its axis direction; and a rotator 6 having a base part 12 provided with a connection mechanism. A fixing hole 10 is formed at the center of the cap 5, and screw holes 11 are formed around the fixing hole 10 at equal intervals in the circumferential direction. A through-hole 15 is formed at the center of the base part 12 of the rotator 6, and bolt insertion holes 16 are formed around the through-hole 15 at equal intervals in the circumferential direction. The insulator set also comprises: a connecting rod 18 loosely inserted in a lockable manner into the through-hole 15 of the rotator 6 and having an end fixedly attached to the fixing hole 10 formed on the cap 5; and a fixing bolt 22 inserted into one of the bolt insertion holes 16 of the rotator 6 and having an end screwed into the selected screw hole 11 of the cap 5.

Description

  The present invention relates to an insulator device suitable for use as a long insulator or a support insulator, and more particularly to an insulator device provided with a mechanism capable of adjusting an angle at an end of a porcelain body.

  The long insulator has a porcelain body in which a large number of umbrellas are stacked in a straight line, and is provided with connecting metal fittings at both ends thereof. The basic configuration is defined in JIS C 3816. FIG. 7 shows this example, and the long insulator 51 includes connecting metal fittings at both ends of a porcelain body 53 with a solid umbrella in which a plurality of umbrellas 52 (10 in this example) are linearly stacked. 54 is provided.

  As a connecting method using the connecting metal fitting 54, there are a clevis tongue connection and a ball socket connection. In the figure, a clevis tongue connection is shown, and a cap 55 is fixed to the end of the porcelain body 53. A pair of clevises 56 that are opposed to each other at a predetermined interval are provided upright at the front end of the clevis. The clevis 56 is formed with a lateral hole 57 into which a cotter (not shown) is inserted. The upper end of the long insulator is suspended by a support arm of a power transmission tower via a tongue (not shown), and the lower end is A transmission line is suspended through a tongue (not shown).

In such a long insulator, since the cap 55 is fixed to the end of the porcelain body 53 via an adhesive such as cement, the direction in which the gap between the clevises forming a pair is formed (the pair 2 The direction perpendicular to the straight line passing through one clevis is always fixed, and depending on the mounting location and mounting method, the angle with the tongue may not match and connection may not be possible.
For this reason, conventionally, an overhead wire fitting (right angle clevis, right angle eye, U clevis, etc.) is interposed between the connecting fitting (clevis) attached to the end of the porcelain body and the tongue to change the connecting angle. Thus, a connected state was formed. However, in such a conventional method, the angle correction work performed at the stage of attaching the insulator becomes large, and it takes time and labor, and there is an inconvenience that an overhead wire must be prepared in advance. In addition, when the insulator is attached, the insulator mark is attached upward. However, in the conventional work, if the orientation is wrong, it is necessary to remove the insulator once and attach it again.

  In order to cope with such an inconvenience, it is also conceivable to use the structure of the support insulator shown in Patent Document 1. The support insulator shown in this Patent Document 1 is a jumper wire support insulator used for steadying the jumper wire, and holds the jumper wire at an appropriate angle according to the horizontal pull-in angle of the power transmission and distribution line. In order to facilitate installation work, the installation side connection fitting is fitted and fixed to one end of the insulator body (porcelain body), and the jumper wire holding attachment is attached to the other end via the power application side connection fitting A long hole for adjusting the mounting angle of the insulator body is formed in the flange portion of the installation-side coupling metal fitting, and a long hole for adjusting the mounting angle of the gripping metal fitting is also formed in the charging-side coupling fitting. It is a thing.

Japanese Utility Model Publication No. 5-6553

  However, in such a configuration, a long hole for angle adjustment is formed in the circumferential direction in the flange portion and the power-applying connection fitting, but in order to ensure the strength of the flange portion and the power-applying connection fitting. In addition, it is necessary to form a non-hole portion, and the long hole cannot be formed to a sufficient length (in the above example, the rotation angle can be secured only about 45 degrees). For this reason, when it is necessary to correct the angle beyond this, it is necessary to remove all bolts from the elongated holes and refit them into the adjacent elongated holes. It was a thing.

  The present invention has been made in view of such circumstances, and enables the coupling mechanism provided at the end of the porcelain body to be easily rotationally corrected over the entire circumference with respect to the axis of the end of the porcelain body. Thus, the main object is to provide a insulator device that can improve the efficiency of the insulator mounting operation.

  In order to achieve the above object, an insulator device according to the present invention is fixed to at least one end of the porcelain body in the axial direction, a fixed hole is formed at the center, and the periphery of the fixed hole is formed. A cap having a plurality of screw holes arranged at equal intervals in a direction and a base portion having a coupling mechanism, and forming a through hole at the center of the base portion and circumferentially around the through hole A rotating body formed with a plurality of bolt insertion holes arranged at equal intervals, and the fixed body that is loosely inserted into the through hole of the rotating body and locked to the rotating body, and whose tip is formed on the cap A connecting rod fixed to the hole; and a fixing bolt inserted into the plurality of bolt insertion holes of the rotating body, and having its tip screwed into the selected screw hole of the cap. Yes.

  Therefore, when attaching the insulator device to the support arm of the transmission tower, etc., if the angle of the coupling mechanism does not match, you can remove the multiple fixing bolts from the screw holes of the cap and rotate the rotating body around the coupling rod If the rotating body is rotated to an appropriate angle and then the fixing bolt is screwed into the screw hole of the cap close to this, there is no need to use an overhead wire fitting (right angle clevis, right angle eye, U clevis, etc.) Connection with a member to be connected is possible. Therefore, according to such a configuration, the rotating body can be rotated within a range of 360 degrees while being locked to the connecting rod, so that the rotating body can be fixed at a desired position and can be smoothly connected. Work becomes possible.

Here, the insulator device may be configured such that the porcelain body is a solid body with a shaded cap, caps are provided at both ends of the porcelain body, and the rotating body, the connecting rod, and the fixing bolt are provided on each cap. Good.
Further, when the insulator device is configured as a long insulator, the coupling mechanism forms a pair standing upright with a predetermined interval on the surface opposite to the surface facing the cap of the base portion of the rotating body. It may be configured to have a clevis and a cotter inserted into a hole formed in the clevis, and when the insulator device is configured as a support insulator, it is formed on the base portion of the rotating body. You may make it comprise having the made flange part, the volt | bolt inserted through the bolt insertion hole formed in this flange part, and the nut screwed together to this bolt.
Further, in order to be able to adjust the position in the circumferential direction in units of 45 degrees, the screw holes provided in the cap are formed at eight positions at intervals of 45 degrees in the circumferential direction, and bolts provided in the rotating body are inserted. For example, the holes may be formed in two places at intervals of 180 degrees in the circumferential direction.

As described above, according to the insulator device of the present invention, the cap includes the cap fixed to at least one end in the axial direction of the porcelain body, and the rotating body having the base portion including the coupling mechanism. A fixed hole is formed at the center of the screw, and a number of screw holes arranged at equal intervals in the circumferential direction are formed around the fixed hole, and a through hole is formed at the center of the base portion of the rotating body. A plurality of bolt insertion holes arranged at equal intervals in the circumferential direction are formed around the through hole, the connecting rod is loosely inserted into the through hole so as to be able to be locked to the rotating body, and the tip is formed on the cap. Since the fixing bolt is inserted into the bolt insertion hole of the rotating body and the tip of the fixing bolt is screwed into the selected screw hole, the connecting mechanism is covered by rotating the rotating body. It can be changed to an angle suitable for connection with the connection member, without using overhead wire fittings It is possible to binding.
Moreover, even if the orientation of the insulator mark is wrongly attached, it can be easily corrected by rotating the porcelain body with respect to the rotating body. Furthermore, since the rotating body and the cap attached to the porcelain body are connected so as to be locked by the connecting rod, they are not separated and dropped at the time of work, and the work becomes easy.

FIG. 1 is a front view of an insulator device according to the present invention. FIG. 2 is a plan view of the insulator device of FIG. FIG. 3 is a view showing an upper end portion of the insulator device of FIG. 1, and is a view showing a state where the rotating body of FIG. 1 is rotated by 90 degrees. 4 is an enlarged half sectional view showing an upper end portion of the insulator device of FIG. FIG. 5 is a plan view of the insulator device shown in FIG. 4 as viewed from above. FIG. 6 is an enlarged half sectional view of the upper end portion showing another example of the insulator device according to the present invention. It is a figure which shows the conventional long insulator, (a) is the front view, (b) is the side view, (c) is the top view.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 show a first embodiment of an insulator device 1 according to the present invention. In this example, the insulator device 1 is used as a long insulator, and has a solid umbrella in which a large number of umbrella parts 2 (in this example, ten umbrella parts) are linearly laminated in the axial direction. It comprises a porcelain body (hereinafter referred to as porcelain body 3) and caps 5 mounted on both ends of the porcelain body, and a rotating body 6 having a coupling mechanism is connected to the caps 5 provided on both ends. .

  The cap 5 is made of metal, and as shown in FIG. 4, the cap 5 has a hollow shape with an opening on the side facing the porcelain body 3, and is formed of a peripheral wall portion 5 a having a circular cross section and a top plate 5 b. 3 is covered with cement 7 serving as an adhesive. The top plate 5b of the cap 5 is formed flat, and a fixing hole 10 is formed at the center of which a connecting rod 18 described below is inserted and fixed, and the periphery of the fixing hole 10 is surrounded by a circumference. A large number of screw holes 11 arranged at equal intervals in the direction are formed. In this example, eight screw holes 11 are formed at equal intervals with a circumferential angle of 45 degrees in the circumferential direction.

  On the other hand, the rotating body 6 is made of metal, and has a circular base portion 12 and a pair of clevises 13 provided on the upper surface of the base portion 12 as shown in FIG. The base portion 12 is formed with a through-hole 15 through which a connecting rod 18 described below is inserted at the center thereof, and a plurality of bolt insertion holes arranged around the through-hole 15 at equal intervals in the circumferential direction. 16 is formed. In this example, two bolt insertion holes 16 are formed at equal intervals with a circumferential angle of 180 degrees in the circumferential direction.

  A connecting rod 18 having a large-diameter head portion 18a and a smaller-diameter columnar portion 18b is inserted into the through-hole 15, and the head portion 18a is formed larger than the diameter of the through-hole 15, and the columnar portion. 18 b is formed smaller than the diameter of the through hole 15. Therefore, the connecting rod 18 has a head 18 a that can be locked to the base portion 12 of the rotating body 6, and is loosely fitted so as to be rotatable relative to the through hole 15. The protruding end of the connecting rod 18 protruding downward from the through hole 15 is inserted into the fixing hole 10 of the cap 5 and fixed to the cap 5 by caulking or welding.

  A fixing bolt 22 is inserted into the bolt insertion hole 16, and a tip of the fixing bolt 22 protrudes downward from the bolt insertion hole 16. The protruding portion is screwed into the screw hole 11 of the cap 5. By screwing the fixing bolt 22 into the screw hole 11, the rotating body 6 is fixed to the cap 5 in a state where the circumferential position is constrained. The rotating body 6 can be rotated around the connecting rod 18 with respect to the cap 5 by releasing the screwing of the fixing bolt 22 into the screw hole 11, but is locked to the head 18 a of the connecting rod 18. Therefore, it is not completely separated.

  Therefore, the above-described connecting structure between the cap 5 and the rotating body 6 constitutes the angle adjusting means 8 that adjusts the angle of the connecting mechanism provided on the rotating body 6. The diameter of the end portion where the rotating body 6 faces the cap 5 and the diameter of the end portion where the cap 5 faces the rotating body 6 are substantially the same, and the rotating body 6 and the cap 5 are the same. The shafts are aligned with each other through the connecting rod 18 so that the fixing bolt 22 and the screw hole 11 can be easily aligned.

  The pair of clevises 13 is erected from the base portion 12 with a predetermined interval, and a gap 19 is formed between which a tongue 24 can be inserted. In addition, the pair of clevises 13 has a lateral hole 20 formed in the lateral direction, and constitutes a coupling mechanism that couples with a member to be coupled (tang 24) together with a cotter 25 inserted into the lateral hole 20. Yes. Therefore, the tongue 24 is inserted into the gap 19 between the pair of clevises 13 so that the lateral holes 20 of the clevis 13 and the lateral holes 26 formed in the tongue 24 are aligned with each other. After that, the clevis tongue connection is configured by inserting the split pin 27 into the pin retaining hole provided in the radial direction of the cotter 25.

  In the above configuration, considering the case where the transmission line is attached to the support arm of the steel tower using the above-described insulator device 1, the rotating body 6 provided at one end of the porcelain body 3 and the transmission line or the support arm are connected. Although the connection can be easily performed, the direction of the clevis 13 to be connected to the tongue depends on the attachment place and the attachment method in connection with the rotating body 6 provided at the other end of the porcelain body 3. When the clevises 13 are not aligned, the angle of the clevis 13, that is, the direction in which the gap between the clevises is formed (the direction perpendicular to the straight line passing through the two clevises forming a pair) needs to be changed. In such a case, the fixing bolt 22 is removed from the screw hole 11, the circumferential restraint of the rotating body 6 is released, the rotating body 6 is appropriately rotated in the circumferential direction around the connecting rod 18, and the clevis 13 The gap 19 is aligned with the direction in which the tongue 24 can be easily connected. Then, after the orientation of the clevis 13 is determined, if the fixing bolt 22 is selected and screwed into the screw hole 11 closest to this, the rotating body 6 and the cap 5 are easily connected to the clevis 13 and the cotter 25. It is in a fixed state due to the positional relationship.

  Thus, according to the above-described configuration, the circumferential position (relative rotational position) between the rotating body 6 and the cap 5 can be freely adjusted in units of 45 degrees. The direction of the insulator mark can be easily corrected, and the clevis 13 and the tongue 24 can be connected smoothly.

In the above-described first embodiment, the example in which the angle adjusting means 8 is provided at both ends of the porcelain body 3 has been described. However, the same action can be obtained by configuring only one end of the porcelain body 3 as described above. You may make it acquire an effect.
In the above-described configuration, the circumferential angle of the rotating body 6 with respect to the cap 5 is fixed by the fixing bolt 22. It can also be used as a new state.

  In FIG. 6, a second embodiment of the present invention is shown. In this embodiment, the insulator device 1 is used as a support insulator attached to a support 29 such as a support arm of a steel tower. Note that the same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In this example, the cap 5 is fixed to the upper end portion of the porcelain body 3 with cement 7 serving as an adhesive. The cap 5 has a fixing hole 10 inserted and fixed in the center of the top plate 5b, and an equal interval in the circumferential direction around the fixing hole 10 (for example, 45 degrees or the like). Eight screw holes 11 are formed at an angle.

  The rotating body 6 is made of metal, and has a circular base portion 12 and a flange portion 6a provided on an upper peripheral edge of the base portion 12 (an end peripheral edge opposite to the side facing the cap 5). The base portion 12 is formed with a through-hole 15 through which the connecting rod 18 is inserted at the center thereof, and a plurality of bolt insertion holes arranged at equal intervals in the circumferential direction around the through-hole 15 16 is formed. In this example, two bolt insertion holes are formed at intervals of 180 degrees with a circumferential angle in the circumferential direction. The flange portion 6a is formed with a plurality of bolt insertion holes 30 through which the bolts 32 attached to the support 29 are inserted.

  A connecting rod 18 having a large-diameter head portion 18a and a smaller-diameter column portion 18b is inserted into the through-hole 15, and the head portion 18a is formed to be larger than the diameter of the through-hole 15, and a cylinder. The part 18 b is formed smaller than the diameter of the through hole 15. Therefore, the connecting rod 18 has a head 18 a that can be locked to the base portion 12 of the rotating body 6, and is loosely fitted so as to be rotatable relative to the through hole 15. The protruding end of the connecting rod 18 protruding downward from the through hole 15 is inserted into the fixing hole 10 of the cap 5 and fixed to the cap 5 by caulking or welding.

  A fixing bolt 22 is inserted into the bolt insertion hole 16, and a tip of the fixing bolt 22 protrudes downward from the bolt insertion hole 16. The protruding portion is screwed into the screw hole 11 of the cap 5. By rotating the fixing bolt 22 into the screw hole 11, the rotating body 6 is fixed to the cap 5 with its circumferential position being constrained. The rotating body 6 is free to rotate around the connecting rod 18 with respect to the cap 5 by releasing the screwing of the fixing bolt 22 into the screw hole 11, but is locked to the head 18 a of the connecting rod 18. Therefore, it is not completely separated.

  In this example as well, the diameter of the end portion where the rotating body 6 faces the cap 5 and the diameter of the end portion where the cap 5 faces the rotating body 6 are substantially the same. The cap 5 and the cap 5 are assembled via the connecting rod 18 so that their axis centers coincide with each other, so that the fixing bolt 22 and the screw hole 11 can be easily aligned.

  The insulator device 1 is connected to the support 29 (such as a support arm of a steel tower) by forming a bolt 32 inserted through an insertion hole 31 provided in the support 29 on the flange portion 6a of the rotating body 6. This is achieved by inserting the bolt 33 through the bolt insertion hole 30 and screwing the nut 33 to the tip of the inserted bolt 32 to fix it. The flange portion 6a, the bolt 32, and the nut 33 constitute a connection mechanism that is connected to the connected member (support 29).

In the above configuration, the insulator device 1 is attached to the support body 29 by bolting the flange portion 6a of the rotating body 6 to the support body 29. Therefore, depending on the attachment location and the attachment method of the insulator body 3, There may be a state in which the bolt 32 cannot be successfully inserted into the bolt insertion hole 30 of the flange portion 6a. In such a case, before attaching the flange portion 6a to the support 29, the fixing bolt 22 is removed from the screw hole 11 to release the circumferential restraint of the rotating body 6, and the rotating body 6 is appropriately rotated in the circumferential direction. The bolt 32 is moved to a position where it can be easily inserted into the bolt insertion hole 30. Then, after the position in the circumferential direction is determined, the bolt 32 can be easily inserted into the bolt insertion hole 30 between the rotating body 6 and the cap 5 by selecting the screw hole 11 closest to the fixing bolt 22 and screwing it. It is in a fixed state due to the positional relationship.
Further, in the above-described configuration, the hole 35 through which the fixing bolt 22 is passed is formed at the position of the support 29 facing the bolt insertion hole 16, and even after the rotating body 6 is fixed to the support 29, the hole 35 is inserted through the hole 35. Then, the angle of the porcelain body 3 may be changed by attaching / detaching the fixing bolt 22 to / from the screw hole 11.

  As described above, according to the above-described configuration, the circumferential position (relative rotational direction position) between the rotating body 6 and the cap 5 can be freely set in units of 45 degrees. It becomes easy to connect the flange portion 6a to the support 29.

  The use of the book insulator device 1 for the support insulator is not limited to the above-described configuration, but can be similarly used for a station post insulator or the like.

  Moreover, in each structure mentioned above, although the position of the circumferential direction with respect to the cap 5 of the rotary body 6 can be adjusted in the unit of 45 degree | times, the space | interval of the circumferential direction of the screw hole 11 formed in the cap 5 is more. By making it small (for example, by forming the screw hole 11 every 30 degrees in the circumferential angle), the attachment angle may be adjusted more finely. In the above example, the fixing bolt 22 that fixes the rotating body 6 to the cap 5 is screwed into the cap 5 every 180. However, in order to increase the fixing strength, three or more bolt insertion holes 16 are provided. The three or more fixing bolts 22 may be screwed into the cap.

DESCRIPTION OF SYMBOLS 1 Insulator 2 Bulk 3 Porcelain body 5 Cap 6 Rotating body 8 Angle adjustment means 10 Fixing hole 11 Screw hole 13 Clevis 15 Through hole 16 Bolt insertion hole 18 Connecting rod 22 Fixing bolt 29 Support body 30 Screw hole 31 Bolt insertion hole 32 Bolt 33 Nut

Claims (5)

Attached to at least one end in the axial direction of the porcelain body, a fixed hole is formed at the center, and a number of screw holes arranged at equal intervals in the circumferential direction are formed around the fixed hole. A cap,
A rotating body having a base part having a connecting mechanism, and forming a through hole at the center of the base part and forming a plurality of bolt insertion holes arranged at equal intervals in the circumferential direction around the through hole;
A connecting rod that is loosely inserted into the through hole of the rotating body and locked to the rotating body, and a tip is fixed to the fixing hole formed in the cap;
An insulator device comprising: a fixing bolt that is inserted into a plurality of bolt insertion holes of the rotating body, and whose tips are screwed into the selected screw holes of the cap.   The porcelain body is a solid shaded porcelain body, the caps are provided at both ends of the porcelain body, and the rotating body, the connecting rod, and the fixing bolt are attached to each cap. The insulator device according to claim 1.   The coupling mechanism is inserted into a pair of clevises that are erected at a predetermined interval on a surface opposite to the surface facing the cap of the base of the rotating body, and a hole formed in the clevis. The insulator device according to claim 1, further comprising a cotter.   The coupling mechanism includes a flange portion formed in the base portion of the rotating body, a bolt inserted through a bolt insertion hole formed in the flange portion, and a nut screwed into the bolt. The insulator device according to claim 1, wherein:   The screw holes provided in the cap are formed at eight positions at intervals of 45 degrees in the circumferential direction, and the bolt insertion holes provided at the rotating body are formed at two positions at intervals of 180 degrees in the circumferential direction. The insulator device according to claim 1, wherein the insulator device is provided.

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