JPH09284960A - Sheave-passed type short anchor clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the mounting of any protector on an anchor clamp unnecessary in stringing, in the anchor clamp for drawing the wire while passing it through a stringing sheave, by shortening its whole length through placing the electric contact portion of its aluminum clamp on the compressed portion of its steel clamp. SOLUTION: Compressing a compressed portion 2a of a short aluminum clamp 2 so as to cover a corrugated portion 1b of a short steel clamp 1 with its one-end side, the short aluminum clamp 2 is fastened compressively to the short steel clamp 1 to place an electric contact portion 2b of the short aluminum clamp 2 on a compressed portion 1a of the short steel clamp 1. Thereby, a sheave-passed type anchor clamp enough shorter than conventional ones can be realized. Resultantly, this anchor clamp clamp can be used to the stringing of a wire, passing it through a sheave without mounting any protector on it in stringing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train wheel passing type detention clamp which allows a train wheel to pass by removing a jumper terminal.

[0002]

2. Description of the Related Art FIGS. 6 to 9 show a typical example of a conventional drawing wheel passing type detention clamp, which is a steel clamp 1 '(FIG. 8), an aluminum clamp 2' (FIGS. 9 and 10) and a jumper terminal 3. ′ Is assembled as shown in FIGS. 6 and 7, and the steel wire portion of the overhead power transmission line (ACSR, etc.) is inserted into the compression portion 1a ′ of the steel clamp 1 ′ and compressed by the compression portion. The aluminum wire is gripped and the aluminum clamp compression part 2a '
And is gripped by the compression of the aluminum clamp compression part, and these are compressed and integrated with the aluminum clamp 2'at the position of the steel clamp wave part 1b 'to retain the function (mechanical, electrical) of the electric wire in the steel tower. It has become.

Also, the branch from the retained wire is
The jumper terminal 3'is used to overlap the electric contact portion 2b 'of the aluminum clamp 2'and tighten the bolt 4'. This jumper wire branch part has an aluminum clamp 2'and a steel clamp 1 '.
And the jumper terminal 3'is fastened by the through bolt 4 '.

[0004] The above described passing through type catch clamp for a gold wheel is approximately 8
The length is about 100 to 1000 mm, and when extending the electric wire, the aluminum clamp 2'on the steel clamp 1 '.
The wire is extended while being compressed and gripped by the end of the wire, but it is housed in a protector called a protector and extended so that it cannot be bent by a hanging wheel passing through during wire extension.

[0005]

In recent years, labor saving in wire drawing work has been studied. Among them, the work of mounting the protector for preventing the bending of the towing clamp is troublesome and spends a long time, and if this protector can be omitted, a great deal of labor can be saved. However, in the conventional detention clamp; FIGS. 6-9, since the total length is long at 800-1000 mm, a large bending force is generated when passing through the hanging wheel and the detention clamp is deformed. Therefore, it is absolutely necessary to attach a protector. Was becoming.

Therefore, the problems to be solved by the present invention (objects)
(EN) Provided is a catch wheel passing type short-length catch clamp, which does not require a protector to be attached at the time of drawing in a draw clamp that extends a wire while passing through a hanging wire car.

[0007]

SUMMARY OF THE INVENTION A gold wheel passing type short length detention clamp provided by the present invention comprises a steel clamp, an aluminum clamp and a jumper terminal, and the jumper terminal is an electrical contact surface setting portion of the aluminum clamp (hereinafter, In the case of a metal wheel passing type tow clamp having a structure of being bolted and pressure-bonded to an electric contact portion), the electric contact portion of the aluminum clamp is located above the compression portion of the steel clamp to shorten the total length. .

According to the above-mentioned short detraining clamp passing through a gold wheel, since the electric contact portion of the aluminum clamp is equal to the length of the compression portion of the steel clamp, the total length of the aluminum clamp is shortened to form the electric contact portion. become able to.

By allowing the tightening bolt to pass through the aluminum clamp in a non-penetrating state at right angles to the electrical contact portion of the aluminum clamp, a sufficient margin for the electrical contact portion can be secured.
The electric contact portion means a surface machined for electrical connection with the jumper terminal, and the surface is generally provided flat.

Further, the steel clamp described above is provided with a corrugated portion that compressively locks the aluminum clamp at the end of the compression portion on the wire insertion side, thereby making it possible to shorten the length of the clamp. The corrugated portion is a mechanical coupling portion that compresses and fastens an aluminum clamp to serve as a strain clamp and bears the total tension of the applied wire.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show a preferred embodiment of a money wheel passing type short retractor clamp according to the present invention.
Short steel clamp 1 (Fig. 3), short aluminum clamp 2 (Figs. 4, 5) and jumper terminal 3 are combined (Figs. 1, 2).
Consists of

As shown in FIG. 3, however, the short steel clamp 1 is connected to the eye portion (left end side in the drawing) which is a mounting portion on the steel tower side to extend the compression portion 1a into a cylindrical shape, A tubular corrugated portion 1b is provided on the extended end of the compression portion 1a, that is, on the steel wire insertion side (the right end side in the drawing).

The aluminum clamp 2 is shown in FIGS. 4 and 5.
As shown in FIG.
Mainly on the side opposite to the wire insertion side (left side in the drawing)
An electric contact portion 2b is provided in the electric contact portion, and notches 2c for passing bolts are formed on both surfaces (upper and lower surfaces in the drawing) orthogonal to the electric contact portion so that the electric contact portion 2b is not penetrated by the bolt. Is.

As shown in FIG. 1, the short aluminum clamp 2 as described above is provided on the short steel clamp 1 and on the short steel clamp corrugated portion 1b.
By compressing the short aluminum clamp compression part 2a so that one end (left end) side of a is covered, the short aluminum clamp 2 is compressed and locked to the short steel clamp 1, and the short aluminum clamp electrode contact part 2b is fixed to the short steel clamp. Compressor 1
It is located on a. By doing so, it is possible to realize a train wheel passing type detention clamp that is sufficiently shorter than the conventional train wheel passing type detention clamp,
As a result, the wire can be extended by passing through the gold wheel without attaching a protector when the wire is extended.

The jumper terminal 3 is set such that its clevis-like portion sandwiches the short aluminum clamp electrode contact portion 2b, and bolts 4 are passed through the clevis-like portion above and below the electrode contact portion 2b (the bolt 4 is a short aluminum clamp). It passes through the cutouts 2c orthogonal to the top and bottom of the electrical contact portion) and is electrically and mechanically attached to the short aluminum clamp 2 by tightening this bolt.

Since the short aluminum clamp on the compression portion of the short steel clamp does not serve as the compression portion, the corrugated portion of the short steel clamp is provided only at the tip of the compression portion, that is, the wire insertion end side.

Further, the insertion / compression of the steel wire into the compression part of the short steel clamp and the insertion / compression of the aluminum wire into the compression part of the short aluminum clamp are performed in the same procedure as that of the strain clamp.

[0018]

As described above, according to the short detraining clamp for passing through a gold wheel of the present invention as described above, since the length of the aluminum clamp is shortened by arranging the electric contact portion on the compression portion of the steel clamp, Protective equipment, which was indispensable for the gold wire passing type detention clamp; it is shortened to the extent that it is not necessary to install a protector, and the labor saving and cost reduction of the wire drawing work is greatly enhanced. Therefore, it is possible to achieve the intended problem (objective) of providing a catch wheel passing type short pulling clamp which does not require a protector to be attached at the time of drawing in a pulling clamp that extends while passing through a hanging rail car.

Further, according to the metal wire passing type short detention clamp of the present invention, the detention clamp is attached to both ends of the electric wire at the factory, which is being advanced in order to cope with the decrease in the number of construction workers in the future. It can also contribute to the development of so-called fully prefabricated electric wires.

[Brief description of drawings]

FIG. 1 is a front view of a money wheel passing-type retracting clamp according to an embodiment of the present invention.

FIG. 2 is a left side view of the money wheel passing type retention clamp according to the embodiment of the present invention.

FIG. 3 is a front view of the steel clamp in the money wheel passing-type retracting clamp according to the embodiment of the present invention.

FIG. 4 is a front view of an aluminum clamp in a train wheel passing-type retracting clamp according to an embodiment of the present invention.

FIG. 5 is a left side view of the aluminum clamp according to the embodiment (FIG. 4) of the present invention.

FIG. 6 is a front view of an anchor passing through type clamp as a conventional example.

FIG. 7 is a left side view of an anchor passing through type clamp as a conventional example.

FIG. 8 is a front view of a steel clamp in a train wheel passing type retention clamp as a conventional example.

FIG. 9 is a front view of an aluminum clamp in a money wheel passing-type retracting clamp as a conventional example.

FIG. 10 is a side view of the aluminum clamp of the same as above (FIG. 9) on the side of the electrical contact portion in the conventional example.

[Explanation of symbols]

 1 Short steel clamp 1a Short steel clamp compression part 1b Short steel clamp wave part 2 Short aluminum clamp 2a Short aluminum clamp compression part 2b Short aluminum clamp electrical contact part 3 Jumper terminal 4 Mounting bolt

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuyoshi Otaka, 4-10-1, Kawajiri-cho, Hitachi-shi, Ibaraki Prefecture Hitachi Cable Ltd. Toyoura factory

Claims (3)

[Claims] 1. A metal wheel passing type of structure comprising a steel clamp, an aluminum clamp and a jumper terminal, the jumper terminal being bolted and pressure-welded to an electric contact surface setting portion (hereinafter referred to as an electric contact portion) of the aluminum clamp. In the detention clamp, a metal alloy wheel passing type short detention clamp in which the aluminum clamp has an electrical contact portion located above the compression portion of the steel clamp to shorten the entire length. 2. The tightening bolt is passed through in a non-penetrating state at right angles to the electrical contact portion of the aluminum clamp.
The short detention clamp for passing through the gold wheel according to claim 1. 3. The coin wheel passing type short retract clamp according to claim 1, wherein the steel clamp is provided with a corrugated portion for compressively locking the aluminum clamp at an end of the compression portion closer to the electric wire side.