JPH0244417Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a metal fitting for tilting a long trunk support insulator in a power transmission tower.

(Prior Art) Long trunk support insulators in conventional power transmission towers have been fixed in the vertical direction to extension plates fixed to the tips of arms.

(Problems to be solved by the invention) When trying to increase the number of insulators from, say, six to eight in order to improve insulation, the jumpers became too large and it became impossible to secure the required clearance.

(Means for solving the problem) As the jumper becomes larger, in order to secure the required clearance, when attaching the jumper support insulator to the tip of the cross arm, it is necessary to attach it at an angle of 25 to 30 degrees outward.

The technical solution for this purpose was constructed as follows.

(Example) 1 is the tip of a cross arm in a power transmission tower, and an angle material is bent into a dogleg shape with respect to the upper surface 3 of the retaining plate 2 of the tip 1. A pair of left-right symmetrical support arms 4 are fixed with bolts and nuts 7 in an upwardly curved position.

At the upwardly inclined portion 5 of the support arm 4 extending outward from the outer end of the retaining plate 2, an inclined bottom surface 6 facing diagonally downward is provided in front of the retaining plate 2.

A bracket 8 bent into an inverted U-shape is fixed to the lower part of the inclined bottom surface 6 by a bolt nut 10. This bracket 8 has an elongated hole 9 formed therein to accommodate the span of the support arm 4.

A bearing plate 11 is fixed to the upper part of the inclined bottom surface 6 by bolts and nuts 14 via elongated holes 13 if necessary, and extension ears 12, 12 are made to protrude from the left and right ends thereof. The extension ears 12, 12 have elongated holes 1 bored in a direction perpendicular to the elongated holes 13, 13.
5.15 are drilled.

The left and right upper side plates 1 are attached to the spans of the pair of left and right downward leg portions 8a, 8a of the bracket 8.
The movable support plate 16 is bent upward into a U-shape to have a width that allows the insertion of the parts 7 and 17.
8 is connected and fixed to the bracket 8 so as to be tiltable by means of a bolt nut 19. The upper part 19 of the support plate 16 has a lower end part 22 of a screw rod 20 to which the head hole part 21 is connected and fixed by a bolt nut 23.
The lower end portion 22 is inserted into the elongated holes 15, 15 of the bearing plate 11 in a posture in which it is moved upward, and is fixed with the stopper nut 25 and the double nut 24. By moving forward and backward, the movable support plate 16 can arbitrarily adjust its inclination angle using the bolt nut 19 of the bracket 8 as a fulcrum. G is an "insulator" fixed to the center of the movable support plate 16.

(Function) The present invention has the above-mentioned structure, and the movable support plate 16 of the insulator body G is provided on the support arm 4 that extends outward from the outer end of the retaining plate 2 at the tip of the arm arm. , bolt nut 19 in bracket 8
Since the movable support plate 16 is fixed to the upper part 19 of the movable support plate 16 so as to move integrally with the stopper nut of the screw rod 20 and the double nuts 24 and 25 are moved forward and backward, the tilt angle support as shown in the solid line in FIG. This enables support in the vertical direction, for example, at an angle of inclination as indicated by a chain line.

(Effects) The present invention has a pair of symmetrical support arms 4 formed by bending an angle material into a dogleg shape, upwardly against the upper surface 3 of the retaining plate 2 of the arm arm tip 1. The supporting arm 4 is fixed with bolts and nuts 7 in a curved position, and the upwardly inclined portion 5 of the support arm 4 has an inclined bottom surface 6 facing diagonally downward in front of the retaining plate 2. At the lower part, a bracket 8 bent into a U-shape is attached to a bolt nut 1.
A bearing plate 11 is fixed to the upper part of the inclined bottom surface 6 by bolts and nuts 14, and extension ears 12, 12 are formed on the left and right ends of the bearing plate 11, and extension ears 12, 12 are formed on the left and right ends of the bearing plate 11. The lower part 18 of the movable support plate 16 is bent upward into a U-shape to have a width in which the left and right folded upper side plates 17, 17 can be inserted into the span of the pair of left and right downward leg parts 8a, 8a. Bolt nut 19 for tilting
The upper part 19 of the support plate 16 is connected and fixed by
To do this, the lower end 22 of the screw rod 20 with the head hole 21 connected and fixed with the bolt nut 23 is moved upward, and the lower end 22 is inserted into the bearing plate 11, and the stopper nut 25 and the double nut 2 are inserted.
4, and by moving the screw rods 20 of both nuts 24 and 25 forward and backward, the movable support plate 16 is fixed.
The structure is characterized in that the angle of inclination can be arbitrarily and variably adjusted using the bolt nut 19 of the bracket 8 as a fulcrum, so even if the shape of the tip of the arm arm is the same as that of the conventional one, the structure is simple. The retrofitting device can quickly and easily support the insulator body G at an angle, and since the structure of the present invention is simple, it can be easily manufactured, mass-produced, and offered to the market at low cost. This is an extremely practical and useful idea.

[Brief explanation of drawings]

Figure 1 is a front view of the peeling body G in a tilted support state;
Figure 2 is a front view of the state before insulator body G is installed, Figure 3
The figure is a plan view of the same. Code table, 1...Top end of arm, 2...Retaining plate, 3...Top surface, 4...Support arm, 5...Slope, 6...Slanted bottom, 7...Bolt/nut, 8...
... Bracket, 8a ... Downward leg, 9, 13,
15... Long hole, 10, 14, 19, 23... Bolt nut, 11... Bearing plate, 12... Extension ear part,
16...Movable support plate, 17...Folding upper side plate, 18...
... lower part, 20 ... screw rod, 21 ... head hole part, 22
...lower end, 24...double nut, 25...stopper nut.

Claims (1)

[Scope of utility model registration request] A pair of bilaterally symmetrical support arms 4 formed by bending an angle member into a dogleg shape are bent upwardly against the upper surface 3 of the retaining plate 2 of the arm arm tip 1, and the bolt/nut 7 is inserted. The upwardly inclined portion 5 of the support arm 4 has an inclined bottom surface 6 facing diagonally downward in front of the retaining plate 2. A bracket 8 bent into a letter shape is fixed with a bolt nut 10, and a bolt nut 1 is attached to the upper part of the inclined bottom surface 6.
4, the bearing plate 11 is fixedly installed, and extension ears 12, 12 are formed protruding from the left and right ends of the bearing plate 11, and the pair of left and right downward legs 8 of the bracket 8
Fold the left and right upper side plates 17, 1 to the spans of a and 8a.
The lower part 18 of the movable support plate 16, which is bent into an upward U-shape to have a width that allows the insertion of the bracket 7, is tiltably connected and fixed to the bracket 8 by a bolt nut 19, and the upper part 19 of the support plate 16 is To do this, the lower end 22 of the screw rod 20 with the head hole 21 connected and fixed with the bolt nut 23 is moved upward, and the lower end 22 is inserted into the bearing plate 11, and then the stopper nut 25 and the double nut 24 are connected. The movable support plate 16 is fixed, and the inclination angle of the movable support plate 16 can be arbitrarily adjusted by moving the bolts 20 of the two nuts 24 and 25 back and forth, using the bolt nut 19 of the bracket 8 as a fulcrum. Bracket for tilting long trunk support insulators on power transmission towers.