JPS5838765Y2 - Low pressure vertical lance extraction fitting - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a low-pressure vertical pull-out metal fitting for a tether line.

Recently, in order to keep the wires away from houses, trees, etc., in the case of wiring for utility poles, insulator-less racks have been used instead of insulators, in which rod-shaped insulating racks are attached to utility poles along the vertical direction. be exposed.

However, when it was necessary to mount this rack on the tip of a utility pole arm, it was difficult to do so on-site because there were no suitable metal fittings, and appropriate metal fittings were required.

The purpose of the present invention is to provide a low-pressure vertically drawn lance extraction tool that meets these demands.

To explain the drawings, a pair of elongated metal fittings each having a U-shaped cross section and an inwardly bent piece 8 on the opening edge is placed with the bottom surfaces of the U-shape facing each other with each opening surface facing outward, and the bottom surfaces of the fittings are Each of the U-shaped fittings constitutes a fitting metal fitting 2, 2 which is welded and connected to the bulb body via a spacer plate 5 sandwiched between both ends of the pair of U-shaped metal fittings that dominate the side surfaces of the fitting metal fittings 2, 2. An elongated insulator with a T-shaped cross section, the longitudinal center of one side of which is welded to the tip of the main body fitting 1 to be attached to the utility pole arm A, and the wire support surface 3b is arranged at right angles to the approximate center of the mounting surface 3a. A plurality of wire retaining holes 3C are provided in a vertical line on the wire support surface 3b of the insulator restraint rack 3 made of steel, and the mounting surface 3a of the insulator restraint rack 3 is inserted into the U-shaped recess of the fitting fitting 2. The supporting surface 3b is positioned and fitted in the U-shaped opening, and the back of the mounting surface 3a is pushed forward, that is, toward the bent piece 8, at both upper and lower ends of the insulatorless rack 3. The presser plate 4 is attached to the spacing plate 5 with pin 1-6.

The main body fitting 1 in the illustrated example has a rectangular tube shape and fits onto the tip of the arm arm A and is fixed with a pin 1-7.

Fitting metal fittings 2, 2 are welded to a U-shaped base 10 integrally formed at the tip of the main body metal fitting 1.

Since the present invention has the above-mentioned structure, the lower pressing plate 4 is loosely attached to the spacing plate 5 with bolts 6 so as to straddle the lower end surfaces of the fitting fittings 2, 2, as shown in FIG.

The upper holding plate 4 is turned 90 degrees and fitted with the fitting fitting 2.2.
Loosely attach it to the spacing plate 5 with bolts 6 between the upper end surfaces of the .

The insulatorless rack 3 is fitted into the fitting fitting 2 from above by positioning its mounting surface 3a in the U-shaped recess of the fitting fitting 2 and positioning the wire support surface 3b in the U-shaped opening.

Next, turn the second side holding plate 4 90' to remove the fitting fittings 2, 2.
to straddle.

When the upper and lower holding plates 4 are tightened with the bolts 6, both leg ends of the holding plates 4 press against the backs of the mounting surfaces 3a at the upper and lower ends of the paddleless racks 3, 3, and the front surfaces of the mounting surfaces are pressed against the fitting fittings 2. , 2 onto the folded piece 8 of .

As above, fit the fittings 2, 2 and 3.3.
After assembling, the main body metal fitting 1 is attached to the cross arm A, thereby easily constructing the spear ejecting post.

Therefore, the installation work is simpler than, for example, the case where the spear arm is attached to the insulator rack and the spear arm is attached to the telephone pole with a band as disclosed in Japanese Utility Model Application No. 50-137589.

In addition, it is better to strengthen the parts of the insulator support rack 3 where the wires held in the wire retention holes 3C and the bent pieces 8 are made thicker as shown in the figure.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the present invention, FIG. 2 is a front view of the assembly process, FIG. 3 is a front view of a part of the assembly in a completed state, and FIG. 4 is a plan view thereof. A is a utility pole armrest, 3 is an insulator support rack, 2 is a fitting metal fitting,
4 is a holding plate, 5 is a spacing plate, and 6 is a bolt.

Claims (1)

[Scope of utility model registration request] A pair of elongated metal fittings each having a U-shaped cross section and an inwardly bent piece 8 on the edge of the opening are placed with the bottom surfaces of the U-shape facing each other with their respective openings facing outward, and held at both ends between the bottom surfaces. The long side of each U-shaped one leg of a pair of U-shaped metal fittings that constitute the fitting fittings 2, 2 that are integrally welded and joined together via the solder spacing plate 5, and that dominates the side surfaces of the fitting fittings 2, 2. An elongated insulator-less rack with a T-shaped cross section, whose central part is welded to the tip of a main body fitting 1 to be attached to a utility pole arm arm Δ, and whose wire support surface 3b is arranged at right angles to the approximate center of the mounting surface 3a. 3, its wire support surface 3b
A plurality of wire retention holes 3C are provided in a vertical line, and the mounting surface 3a of the insulatorless rack 3 is fitted into the U-shaped recess of the fitting fitting 2 with the wire support surface 3b positioned within the U-shaped opening. together,
At both the upper and lower ends of the insulator-less rack 3, attach the V-shaped holding plates 4 that push the back of the mounting surface 3a forward with the bolts 6.
A low-pressure vertical lance extraction fitting attached to the spacing plate 5.