JPH0525155Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a structure for attaching a cylindrical cut-out with a tangling angle.

(Prior art) Conventionally, in cylindrical cutouts for protecting power distribution equipment such as transformers installed on power distribution lines,
As shown in FIGS. 6 and 7, a support portion 53 provided on one side of a mounting band portion 52 fastened to the approximate center of the main body insulator 51 and a support arm mounting bracket 55 fixed to an arm arm 54 are connected. They are removably connected with bolts 56. In order to protect the power distribution equipment from abnormal voltages such as lightning surges, a discharge electrode 57 is provided at the lower end of the main body insulator 51, and a tangent angle 58 whose upper end is attached to the fastening part of the mounting band part 52 the lower end of
The discharge electrode 57 is arranged to form a predetermined discharge gap G2, and the abnormal current based on the abnormal voltage is applied to the discharge gap G2, the twining angle 58, the mounting band portion 52, the support portion 53, and the arm mounting bracket 55. It has been proposed to allow the water to escape through the arms 54.

In the above-mentioned proposed cylindrical cutout mounting structure at an angle of twist, the discharge gap G2 is adjusted at the time of shipment from the factory.

(Problem to be solved by the invention) However, since the upper end of the above-mentioned tangling angle 58 is attached to the fastening part of the mounting band part 52, it is impossible to remove it by using the normal main body insulator and the mounting bracket. This results in the formation of a protruding part other than the shape, which not only increases the size of the package, but also makes the tangling angle 58 susceptible to external force during packaging, transportation, etc., and the gap adjustment at the time of shipment from the factory is disrupted, causing the original function to deteriorate. There is a possibility that the discharge action will be hindered.

The purpose of this invention is to allow the installation of the sparkle angle while adjusting the discharge gap at the factory shipping stage without making any special changes to the main body insulator of the cylindrical cutout or complicating the structure. To provide an entanglement angle mounting structure for a helical cylindrical cutout on which external force is difficult to apply and the package appearance of the cutout as a whole does not become large even after the entanglement angle is attached.

Structure of the Invention (Means for Solving Problems) In order to achieve the above object, the present invention includes a discharge part for discharging abnormal current such as lightning surge to the outside at the end of the cylindrical main insulator. On the other hand, a mounting bracket consisting of a mounting band portion corresponding to the outer circumferential surface of the body and a connecting portion corresponding to the cross-piece mounting bracket is fastened to the body of the main insulator, and a tangling angle fixed to the mounting bracket is fastened to the body of the main insulator. In the cylindrical cut-out spiral angle mounting structure in which a discharge gap is formed between the tip of the fitting and the discharge part, the connecting part of the mounting bracket is formed to have an inverted channel shape in cross section, and the tip of the connecting part is formed with a reverse channel shape. The part is provided with a through hole through which a mounting bolt or the like is inserted when connecting with the cross arm mounting bracket side, while the above-mentioned tangent angle is provided with a reinforcing rib in its longitudinal direction, and the proximal end of the tangent angle is provided with a reinforcing rib in the longitudinal direction. It has a shape that fits inside or outside of the connecting portion, and is fitted and fixed at a position near the proximal end of the connecting portion.

(Function) In other words, the sparkling angle is adjusted by adjusting the discharge gap with the discharge part provided on the insulator side of the main body at the time of shipment from the factory, and by adjusting the base of the connection part so that it protrudes in the same direction as the connection part of the mounting bracket. It is supported and fixed in a non-rotatable position near the end. Furthermore, the reinforcing ribs provide strength against bending at the tangling angle. The mounting bracket is connected to the arm mounting bracket at the distal end of the connecting portion.

(Example) An example embodying this invention will be described below with reference to FIGS. 1 and 3.

An upper electrode 2 is provided at the upper part of the cylindrical cut-out main body insulator 1, and a lower electrode 3 is provided at the lower part, and a fuse tube 4 is installed between the two electrodes 2 and 3. An upper electrode lead wire 5 introduced from the upper part of the main insulator 1 is connected to the upper electrode 2, and a lower electrode lead wire (not shown) is connected to the lower electrode 3, which is connected to the side of the main insulator 1. It is now derived from

Further, a cylindrical hook member 6 is fitted into the lower end opening of the main body insulator 1, and a support portion 6a is provided for the hook member 6 in correspondence with a storage portion 8a to be described later.
A current limiting element 7 made of a semicircular arc-shaped sintered body containing zinc oxide (ZnO) as a main component is housed in the housing.

A bulge 8 is formed at the lower end of the main insulator 1 on the left side in FIG. is installed. A predetermined discharge gap G1 is formed between the intermediate electrode 9 and the charging side terminal 11 provided at the upper end of the current limiting element 7.

On the other hand, a main body insulator 1 is provided at the lower end of the storage portion 8a.
A discharge hole 12 communicating with the outer surface of the discharge hole 12 is provided through the discharge hole 12, and a discharge electrode 13 as a discharge portion is provided within the discharge hole 12. A ground terminal 14 provided at the lower end of the current limiting element 7 is connected to the discharge electrode 13,
The intermediate electrode 9, the current limiting element 7, and the discharge electrode 13 form a flash circuit to the outside against intrusion of abnormal current such as lightning surge. .

A mounting band portion 15 of a mounting bracket 17 consisting of a mounting band portion 15 and a connecting portion 16 is fastened to the outer circumferential surface of the main body insulator 1 at a substantially central portion with bolts and nuts. A square hole 27 serving as a through hole is provided at the tip of the connecting portion 16 .

The connecting portion 16 is formed in a reverse channel shape in cross section, and reinforcing ribs are provided on both sides of the lower surface of the base.
A proximal end 19 of a tangling angle 18 formed in a channel-like cross section having 8a and 18b is suspended and fixed by a rivet 20. A pair of locking pieces 21 are provided on both outer sides of the base end portion 19 and protrude from both sides, and the cross section is
The locking piece 21 is positioned in contact with the inside of the connecting portion 16 to prevent the twisting angle 18 from rotating about the rivet 20 with respect to the connecting portion 16. Said tangling angle 18
extends downward along the bulging portion 8 of the main insulator 1, and a bolt 22 is screwed into the tip thereof, and the tip of the bolt 22 is connected to the tip of the discharge electrode 13 through a predetermined discharge gap G. They are now placed facing each other. By screwing together the bolt 22, the discharge gap G can be finely adjusted as appropriate.

The L-shaped arm mounting bracket 25 is attached to the arm 23 of a telephone pole by tightening a nut 24a to an L-shaped bolt 24, and has a square hole 26 transparent at its tip. Then, the connecting portion 16 of the mounting fitting 17 is overlapped with the tip of the arm metal fitting 25 from above, and after the square hole 27 is overlapped with the upper surface of the square hole 26, the square root bolt 28 is inserted downward. the square root 28a of the square hole 26, 2.
7 and screwing the nut 31 onto the tip side of the square root bolt 28 via the spring washer 30, the arm arm mounting bracket 25 and the connecting portion 16 are fixed.

Now, to explain the operation of the cylindrical cut-out triangulation angle mounting structure configured above, the connection part 1 of the mounting bracket 17 is
The proximal end 19 of the helical angle 18 is held unrotatably to the inside of 6 through a locking piece 21 and fixed with a rivet 20, and the bolt 22 is adjusted appropriately to set the discharge gap G to a proper position. set to the value. Therefore, when packed and shipped, the tangling angle 18 extends along the outer shape of the main body 1, and the mounting bracket 17
Since it protrudes in the same direction as the connecting part 16 and does not protrude in a different direction, it not only makes the packaging more compact and makes it easier to pack, but also makes it difficult for the helical entanglement angle to receive external force, so even if it is exposed to external force. Even if the mounting bracket 17 does not rotate relative to the connecting part 16,
The discharge gap G setting does not change. or,
Since the mounting band portion 15 is not affected by external forces related to the shear angle 18, the mounting band portion 15
The fastened parts will not loosen or deform.

In addition, the tangling angle 18 has reinforcing ribs 18 on both sides.
a, 18b, and has a channel-shaped cross section, which provides excellent strength against bending.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS. 4 and 5.

In this embodiment, the connecting portion 16 of the mounting bracket 17 is
Elongated holes 34 extending in the longitudinal direction are provided on both sides of the base, and an engaging portion 36 provided horizontally is provided at the upper end of the twining angle 35 that is suspended and supported by the connecting portion 16. A pair of mounting plate portions 37 are provided on both sides of the engaging portion 36 in a protruding manner. Bolt holes 38 are transparently provided in the mounting plate portion 37 in correspondence with the elongated holes 34 of the connecting portion 16, and a pair of locking pieces protrudes inwardly at the upper end of the mounting plate portion 37. 39 is bent in correspondence with the upper surface of the connecting portion 16 to form a base end portion having a substantially square cross section. Then, the proximal end portion formed by the engaging portion 36, the mounting plate portion 37, and the locking piece 39 is fitted onto the outer periphery of the connecting portion 16, and the above-mentioned twining angle 35 falls downward and the connecting portion 16 is By preventing rotation, inserting bolts 40 into the elongated holes 34 and bolt holes 38, and tightening nuts (not shown) inside the connecting portions 16, the twining angles 35 are firmly suspended and supported. Ru. By loosening this bolt 40 and moving it within the elongated hole 34 and bolt hole 38, the tangent angle 35 approaches and separates from the main insulator 1, and the tip end 35a of the tangent angle 35
The discharge gap G between the discharge electrode 13 and the discharge electrode 13 can be adjusted.

Further, a tongue-shaped mounting bracket 41 is protruded from the outside of the center of the twine angle 35, and a cylindrical fuse tube support 42 capable of holding the upper electrode of the fuse tube is provided on the lower surface of the mounting bracket 41. It is attached so that it can temporarily hold the fuse cylinder that has been pulled out during maintenance and inspection.

Then, the square hole 2 at the tip of the arm mounting bracket 25
6 and the square hole 27 of the connecting portion 16, the square root bolt 43 is inserted from above and the nut 44 is screwed together, so that the mounting bracket 17 and the cross arm mounting bracket 25 are connected and fixed.

Therefore, in this embodiment, in addition to the effects of the above-mentioned embodiments, the engagement portion 36 and the mounting plate portion 37 reliably prevent the slip angle 35 from falling, and are further improved compared to the above-mentioned embodiments. Can be firmly connected.

Note that this invention is not limited to the above-mentioned embodiments, and may be modified as desired without departing from the spirit of this invention.

Effects of the invention As detailed above, according to the invention, the tangling angle is measured at the connection point of the mounting bracket at the factory shipping stage, separate from the work of connecting the mounting bracket to the arm mounting bracket, which is performed on the column. Not only is it easy to adjust the discharge gap, but the above-mentioned tangle angle is fitted and fixed in a non-rotatable manner to the connecting part of the mounting bracket, and the reinforcing ribs improve the strength against bending. As a result, even if an external force is applied to the shear angle, the discharge gap set during factory shipping will not be disturbed, and the projecting direction of the shear angle as viewed from the axis of the main insulator will be connected. Since the direction is the same as that of the cutout, unlike the conventional method, there is no need to increase the size of the entire cutout at the shipping stage, which is an excellent effect for industrial use.

[Brief explanation of the drawing]

1 to 3 show a first embodiment embodying the present invention, FIG. 1 is a side view showing the main body insulator and arm mounting bracket, FIG. 2 is a rear view of the helical angle, and FIG. The figure is a perspective view of the arm mounting bracket as seen diagonally from above.
Figures 4 and 5 show the second embodiment, Figure 4 is a side view showing the main insulator and arm bracket mounting bracket, Figure 5 is a perspective view of the main part of the tangling angle, and Figures 6 and 7. The figures show a conventional example; FIG. 6 is a side view showing the main insulator and arm mounting bracket, and FIG. 7 is a front view of the main insulator. DESCRIPTION OF SYMBOLS 1... Main body insulator, 13... Discharge electrode as a discharge part, 15... Mounting band part, 16... Connection part,
17...Mounting bracket, 18, 35...Flip angle, 1
8a, 18b... Reinforcement rib, 19, 36... Base end portion, 22... Bolt, 23... Bracelet, 25... Bracelet mounting bracket, 27... Square hole as through hole, 35
a... Tip, G... Discharge gap.

Claims (1)

[Claims for Utility Model Registration] A discharging part for discharging abnormal current such as lightning surge to the outside is provided at the end of the cylindrical main insulator, and the body of the main insulator is provided with a discharging portion on the outer peripheral surface of the body. A mounting bracket consisting of a mounting band portion corresponding to the mounting bracket and a connecting portion corresponding to the cross arm mounting bracket is tightened, and a discharge gap is formed between the distal end of the tangling angle fixed to the mounting bracket and the discharge portion. In the cylindrical cut-out, the connecting part 16 of the mounting bracket 17 is formed in a reverse channel shape in cross section, and a mounting bolt or the like is inserted into the tip of the connecting part 16 when connecting it to the arm mounting bracket 25 side. The twining angles 18 and 35 are provided with reinforcing ribs 18a in the longitudinal direction.
18b, and the shear angle 18, 35
A cylindrical cut-out interlocking angle characterized in that the base end portions 19 and 36 of are shaped to fit inside or outside the connecting portion 16 and are fitted and fixed at a position near the base end of the connecting portion 16. Mounting structure.