JPH0236171Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a fitting for attaching a lightning horn to an insulator.

(Prior art) Generally, a lightning protection horn device is installed near the insulator of a power line to protect the insulated wire and insulator from damage caused by breakage due to follow-on arcs from lightning surges. . To explain the pole installation using insulators according to the present invention, for example, a pin fitting of a pin insulator is passed through the cross arm and is tightened and fixed with a nut. In addition, the mounting brackets for lightning horns inevitably become diverse, as there are also brackets and pull-down poles in which tension-resistant insulators are tightened and fixed with grounding side metal fittings via strap metal fittings. There were no universal mounting brackets available. Moreover, since installation of lightning horns is usually carried out as a repair work for existing installation poles, the work is unstable and the installation work is time-consuming.

(Problems that the invention attempts to solve) This invention solves the problems of installing lightning horns on poles, that is, the mounting brackets are diverse, and the installation work is time-consuming and unstable. trying to solve.

Structure of the invention (means for solving the problems) In order to solve the above problems, the present invention uses a pair of earthing side metal fittings of an insulator installed upright on a cross-arm, which are fitted from the side around the outer periphery of the insulator. a gripping member rotatably attached to the gripping member; a locking member capable of holding the open end of the gripping member in a closed position; and a locking member attached to the gripping member and fixing the grounding side metal fitting via the gripping member. The gripping member includes a tightening bolt that can be tightened, and a support arm that extends laterally from at least one of the gripping members.

(Function) With the insulator still standing on the cross arm, open the gripping member of the mounting bracket to which the lightning horn is attached and fit the gripping member to the ground side metal fitting of the insulator,
The gripping member is held in the closed position by the locking member and temporarily supported by the grounding side metal fitting, and when the tightening bolt is subsequently tightened, the gripping member is tightened and fixed to the grounding side metal fitting. In this way, the lightning horn can be easily and quickly attached to the insulator.

(Embodiment) Hereinafter, a first embodiment embodying the present invention will be explained according to FIGS. 1 to 4. In the drawings, 1 is a arm that is horizontally fixed to a utility pole (not shown), and 2 is a arm that is fixed horizontally to a utility pole (not shown). It is an insulator attached to the upper surface of the insulator 1, and has a ground side metal fitting 3 such as a pin metal fitting at the bottom thereof, and the ground side metal fitting 3
A collar 3a that contacts the upper surface of the cross arm 1 is formed in the upper part of the arm 1, and a male threaded part 3b is formed in the lower part thereof, and a nut 4 is screwed into this male threaded part 3b to fasten the insulator 2. Reference numeral 5 denotes an insulated wire that is bound to the upper end of the insulator 2 by a bind wire 6.

Reference numeral 7 denotes a first gripping member which is integrally formed with a leg portion 8 that is supported on the upper surface of the arm 1, and has a gripping surface 7a on its inner surface that comes into contact with the outer peripheral surface of the grounding side metal fitting 3. A V-shaped surface is formed and corresponds to a gripping surface 11a of the second gripping member 11, which will be described later.
Reference numeral 9 denotes a support arm for attaching the lightning horn 10, which is integrally formed with one end of the first gripping member 7, and has a mounting hole 9a formed through its tip.

Reference numeral 11 denotes a second gripping member which is rotatably connected to the bearing protrusion 7b formed at the boundary between the first gripping member 7 and the support arm 9 through a connecting shaft 12, and has a second gripping member on one side thereof. A leg portion 13 is integrally formed to be supported on the upper surface of the armrest 1, and a gripping surface 11a that comes into contact with the outer circumferential surface of the grounding side metal fitting 3 is formed on the inner surface to grip the first gripping member 7. A V-shaped surface corresponds to the surface 7a. Both gripping members 7, 1
A spring 14 is provided on the first shaft attachment portion, and urges both gripping members in a direction to close them. Reference numeral 15 denotes a locking member having a cap fitting 25 that is removably fitted into open ends 16 and 17 formed integrally with the ends opposite to the shaft attachment portions of both the gripping members 7 and 11, respectively. When the locking member 15 is fitted into the open ends 16, 17, both the gripping members 7, 11 are closed and cannot be opened.

Reference numeral 18 denotes a bearing portion formed to protrude toward the first gripping member 7 side from the base end portion of the open end 17 of the second gripping member 11, and numeral 19 extends through the cap fitting 25 and is screwed into the bearing portion 18. A pressing pad 20, which is a tightening bolt and has a curved surface pressed against the outer circumferential surface of the grounding side metal fitting 3 at its tip, is attached to the collar 19a and the C ring 2.
1 for relative rotation. A locking nut 22 is threaded onto the tightening bolt 19 and is pressed against the top surface of the cap metal fitting 25 via a spring washer 23.

Next, the operation of the mounting bracket configured as described above will be explained.

To attach the lightning horn 10 to the existing insulator 2, first loosen the tightening bolt 19 and locking nut 22, and separate the cap fitting 25 from the open ends 16, 17. Thereafter, when the second gripping member 11 is rotated counterclockwise in FIG. 3 about the connecting shaft 12 against the elasticity of the spring 14, the second gripping member 11 is rotated counterclockwise in FIG. A gap is formed between the open ends 16 and 17, which is spaced apart from the member 7, and into which the ground side metal fitting 3 can be inserted. In this state, both the gripping members 7 and 11 are fitted to the grounding side metal fitting 3, and a V-shaped surface formed by the gripping surfaces 7a and 11a of both the gripping members 7 and 11 is applied to the outer peripheral surface of the grounding side metal fitting 3. the second gripping member 11 is rotated toward the first gripping member 7 by the elasticity of the spring 14, and the open end 1
6 close to the open end 17 of the second gripping member 11,
By fitting the cap fitting 25, both open ends 16 and 17 are locked so that they cannot be opened. Further, the tightening bolt 19 is rotated to press the pressing pad 20 attached to the tip thereof against the outer circumferential surface of the grounding side metal fitting 3.
At this time, the outer peripheral surface of the grounding side metal fitting 3 is moved between the V-shaped surface formed by the gripping surfaces 7a and 11a of both gripping members 7 and 11 and the pressing pad 20, and the pressing pad 20 is moved and tightened. The gripping members 7 and 11 are not restricted by the diameter fluctuation of the armrest 1 and are stably fixed by the pair of leg parts 8 and 13.
Stably supported on top. Moreover, since the pressing pad 20 is rotatably attached to the tightening bolt 19, it can be moved straight by the screwing of the tightening bolt 19.
It can be pressed without damaging the plated surface of the ground side metal fitting 3. Note that after the tightening bolt 19 has finished rotating,
The locking nut 22 is pressed against the top surface of the cap metal fitting 25, and the metal fitting 25 is pressed against the open ends 16, 17, and the tightening bolt 19 is pressed against both the gripping members 7, 11.
Fixed to.

Note that the lightning horn 10 may be attached to the support arm 9 in advance.

In the first embodiment of the present invention, the second gripping member 11 is connected to the first gripping member 7 so as to be rotatable in opening and closing, and the open ends 16 and 17 of both gripping members are connected to the locking member 15 made of a cap fitting 25. The grounding side metal fitting 3 is made so that it can be held with
Since the above-mentioned members are connected together, there is no need to loosen the tightening nut 4 of the existing insulator 2 or remove the insulator 2, and since it is attached to the ground side, live wire work is not required. The mounting bracket can be easily and quickly attached to the grounding side bracket 3 while remaining in place, and parts can be prevented from being lost or dropped during installation work. It is also possible to easily attach a frame pillar or a pull-down pillar to which a tension-resistant insulator is attached without being restricted by the installation state of the pillar.

In addition, in the first embodiment of the present invention, gripping surfaces 7a and 11a are provided diagonally on both gripping members 7 and 11, respectively, to form a V-shaped surface, and a pressing pad 20 attached to a tightening bolt 19 allows the ground side metal fitting to be 3 is firmly supported, and the legs 8 and 13 are supported on the upper surface of the armrest 1, so that the mounting bracket can be stably attached to the grounding side bracket 3, and Even if the diameter of the metal fitting 3 changes, the gripping function does not deteriorate.

Next, a second embodiment of the present invention will be described based on FIGS. 5 and 6.

In this second embodiment, a support arm 9 is integrally formed at the center of the outer periphery of the first gripping member 7, and a tightening bolt 19 is screwed into a boss portion 24 formed integrally at the center of the outer periphery of the second gripping member 11. At the same time, a lock member 15 is formed by connecting a lock lever 27 to the open ends 16 of both grip members 7 so as to be able to be locked to the open ends 17 by a connecting shaft 26, and a lock lever 27 is connected to the open ends 16 of both grip members 7 so that the lock lever 27 can be locked to the open ends 17. Two gripping surfaces 7a and 7c are formed on the surface to form a V-shaped surface. Furthermore, cutout recesses 7d and 11d are formed in the lower end surfaces of both the gripping members 7 and 11 to accommodate the collar 3a of the grounding side metal fitting 3.

Next, a third embodiment of the present invention will be described based on FIGS. 7 to 9.

The first and second gripping members 7 and 11 are made of bent plate-shaped metal, and have an eaves portion 7 forming the upper surface.
Corresponding V-shaped surfaces 7f and 11f are formed on the inner edge portions of e and 11e, respectively, and abut against the outer periphery of the ground side metal fitting 3. The eaves portions 7e, 11e have side walls 7g, 1
It is bent and formed at the same height position from the bottom surface supported on the cross arm 1 of 1 g, and is configured so that the base line of the load on both gripping members 7 and 11 due to the clamping pressure of the grounding side metal fitting 3 is made to coincide. . That is, even if the grounding side metal fitting 3 of the insulator 2 is tapered, the grounding side metal fitting 3 can be stably gripped by matching the base line heights of the loads and eliminating unbalanced loads between the two gripping members 7 and 11. If the V-shape expands to 90 degrees or more, even if the diameters of the various ground side metal fittings 3 are different, the difference in diameter can be absorbed and gripping becomes easy. A support arm 9 integrally formed in a substantially L-shape is stretched over one end of the first gripping member 7, and a mounting hole 9a is provided through the front end of the support arm 9. An integrally formed open end 16 is formed, and the front end thereof is bent into an arc shape to form a locking end 16a, and the locking end 16a has a notch 16b that is open toward the tip.
has been established.

Further, the bottom surface of the support arm 9 and the eaves section 7e are
A pair of corresponding ears 7h and 7i are formed at the bottom.

On the other hand, the second gripping member 11 has an ear portion 11h formed at one end thereof, which corresponds to the ear portions 7h, 7i of the first gripping member 7, and is fitable therebetween.
11i, and is rotatably attached by a connecting shaft 12. In the second gripping member 11, the boundary portion between the eave portion 11e and the ear portion 11i is connected in a stepped manner. Further, a spring 14 is inserted through the connecting shaft 12 in the shaft attachment portion to urge both the gripping members 7 and 11 in the closing direction.

Further, an open end 17 is formed at the other end of the second gripping member 11 in correspondence with the open end 16 of the first gripping member 7, and the front end thereof is bent into an arc shape to form a locking end 17a. None, and a locking hole 17b is transparently provided in the locking end 17a. A tightening bolt 19 is installed in the locking hole 17b, is locked in a notch 16b provided in the locking end 16a of the first gripping member 7, and is tightened with a nut 22 through a washer 23. In this embodiment, the tightening bolt 19 is also used as a locking member 15, and the grounding side fitting 3 is brought into contact with the corresponding V-shaped surfaces 7f and 11f, and the open ends 16 and 17 are closed. and insert the tightening bolt 19 attached to the locking end 17a into the notch 16.
If it is inserted into the locking end 16a and locked into the locking end 16a, the first
The second gripping members 7, 11 are held in the closed position.
Furthermore, as shown in FIG. 8, both gripping members 7, 1
Inwardly protruding tongue pieces 7j and 11j are formed on the bottom surfaces of the side walls 7g and 11g of 1 so that the inner edges are arcuate, and the diameter D of the inscribed circle is the diameter of the collar 3a of the grounding side metal fitting 3. If they match, the gripping members 7 and 1
1 is a grounding side metal fitting 3 held between V-shaped surfaces 7f and 11f.
Since it is supported at two places, the top and bottom of the flange 3a, the installation is strong and stable. Said tightening bolt 1
9 is provided with a head 19b having a flat rectangular shape, etc., and the side surface of the head 19b is formed into a curved surface that matches the arc shape of the locking end 17a, so that the tightening bolt 19 can be locked to the locking end 17a. The open ends 16 and 17 are convenient for engagement and disengagement because the open ends 16 and 17 do not come off and are rotatable about the engagement portion as a fulcrum. Furthermore, in this embodiment as well, both the gripping members 7 and 11 are fitted onto the outer periphery of the grounding side metal fitting 3 by the corresponding V-shaped surfaces 7f and 11f, so that they are not restricted by the diameter variation of the grounding side metal fitting 3. and,
Positioning is also easy and can be stably fixed to the grounding side metal fitting 3.

In the present invention, with the insulator 2 erected on the cross arm 1, both the gripping members 7 and 11 are opened to grip the grounding side metal fitting 3 from the sides of its outer periphery, and it is rotatably attached to one of the gripping members. Both gripping members 7, 11 are held in the closed position by the locking member 15 having either the attached cap fitting 25, the locking lever 27, or the tightening bolt 19, etc., at the open ends 16, 17. It can be temporarily supported by the ground side metal fitting 3, and the installation is immediately completed by subsequently tightening the tightening bolt 19.

The lightning horn 10 can be operated by being attached in advance to the support arm 9 connected to the gripping members 7 and 11, and since each member is integrally connected, there is no fear of loss due to detachment.

As is clear from the above explanation, the ground side metal fitting of the insulator can be used for both rod-shaped bodies such as pin metal fittings and large diameter cylindrical bodies such as base metal fittings, and the present invention is applicable to both pin fittings and base metal fittings. It is possible to provide a mounting bracket for a lightning horn that can be widely used for pin insulators, solid insulators, etc. that have a ground side metal fitting.

Effects of the invention As detailed above, this invention does not damage the existing members by loosening or removing the existing insulators, and since it is installed on the grounding side, it can be installed on the grounding side while the live wire is being worked. The lightning horn can be easily and quickly attached to the metal fittings, and
It is possible to prevent parts from being lost or dropped during the installation work, and the installation work can be carried out without being restricted by the mounting state of the armrest.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention,
Figure 1 is a front view showing how the mounting bracket of the present invention is used, Figure 2 is a front view of the mounting bracket of the present invention, Figure 3 is a plan view, and Figure 4 is A-A in Figure 3. 5 and 6 show a second embodiment of the present invention, FIG. 5 is a plan view of the mounting bracket of the present invention, FIG. 6 is a front view of the same, and FIGS. 7 to 9 The figures show a third embodiment of the present invention, Fig. 7 is a plan view of the mounting bracket of the present invention, Fig. 8 is a bottom view showing the main parts, and Fig. 9 is a bottom view showing the main parts.
The figure is a front view of FIG. 7. 1... Bracelet, 2... Insulator, 3... Ground side metal fitting,
7...First gripping member, 9...Support arm, 10...
... Lightning horn, 11 ... Second gripping member, 15 ...
Lock member, 16, 17...open end, 19...tightening bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A pair of rotatably attached gripping members 7, 11 which are fitted from the side to the outer periphery of the ground side metal fitting 3 of the insulator 2 which is installed upright on the cross arm 1. a locking member 15 capable of holding the open ends 16, 17 of the gripping members 7, 11 in the closed position;
11 and which can fix the grounding side metal fitting 3 via the gripping members 7 and 11, and a support arm 9 that extends laterally from at least one of the gripping members 7 and 11. A lightning-proof horn mounting bracket for an insulator, characterized by comprising: 2. A utility model in which a pair of corresponding V-shaped surfaces 7f, 11f are formed on the inner periphery of both gripping members 7, 11, abutting against the grounding side metal fitting 3 of the insulator 2, and having the same height from the base surface. A mounting bracket for a lightning horn for an insulator as claimed in claim 1. 3. The locking member 15 is a cap fitting 25 that is mounted on the open ends 16, 17 of the gripping members 7, 11, or a lock lever that is rotatably pivoted on one open end and locked on the other open end. 27. A mounting bracket for a lightning-proof horn to an insulator as set forth in claim 1 of the registered utility model. 4. The mounting bracket for a lightning-proof horn to an insulator as claimed in claim 1, wherein the gripping members 7, 11 are provided with a spring 14 that biases the members 7, 11 in the rotating direction.