JPH08331722A - Cutting tool for battledore-shaped portion in anchoring clamp - Google Patents

Abstract

PURPOSE: To obviate change with a metal wheel passage type tensioning clamp by making an incision in the aluminum material on the circumference of the battledore- shaped portion of an anchoring clamp, and cutting it off to expose the internal steel sleeve. CONSTITUTION: The battledore-shaped portion of the aluminum sleeve of an anchoring clamp is marked with side lines p-g. An upper tool 1 and a lower tool 2, which are symmetrical uniform and straight cutting edges, are mounted on the upper and lower parts of a portable press. The tools are pressed against the lines p-g from both sides, and the positions of the tools are shifted two or three times on the same lines to cut the aluminum layer over the full length of the lines. When the edges cut the aluminum layer and hit the internal steel clamp, the oil pressure is abruptly increased. Then the switch setting is changed. The tools 1, 2 are removed from the press, and tools 3, 4 having an arc-shaped cutting edge are mounted instead. The tools are pressed against the annular portion including point p from both sides. When the arc-shaped tools 3, 4 hit the workpiece, they are positioned almost outside the steel clamp S and thus the aluminum layer is cut off from the entire circumference. Use of these tools makes it possible to simply cut off battledore-shaped portions, and obviates change with a metal wheel passage type tensioning clamp.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention relates to a tool for exchanging a battledore part of front and rear end stop clamps of an old line before exchanging the old and new lines of a transmission line.

[0002]

2. Description of the Related Art When replacing an old line that spans several diameters with a new line, the new line is connected to the terminal of the old line and the starting end of the old line is towed by a pilot wire through a train. The detent clamps at the start and rear ends of the wire have a jumper wire attachment battledore portion, which protrudes downward and cannot pass through the gold wheel. For this reason, conventionally, a method has been used in which a cam along is attached to an old wire, is temporarily fixed to a steel tower with a wire rope, an electric wire is cut near the mouth of a retaining clamp, and a wire passing type wire clamp is attached. Although this makes towing possible, it was an aerial work that requires considerable time and labor.

[0003]

A detent clamp comprises a linear crimp portion and a conical battledore portion at the base. A cut is made in the outer peripheral aluminum material of the battledore part and this is cut to expose the steel sleeve inside. Since the pulling force is secured at the crimping part, there is no problem with the wire extension. The work is significantly simplified because the outer skin of the battledore part only needs to be stripped off.

Special tools are required for cutting. Therefore, with a straight blade tool that makes a cut in the side line of the conical plate of the battledore part,
Prepare an arc blade tool that inserts an arcuate cut into the annular part of the battledore part. The upper and lower dies of the portable hydraulic press are first fitted with the former and then replaced with the latter to form the annular cut. After that, it can be removed manually.

[0005]

[Embodiment] As shown in FIG. 5, the retaining clamp is made by inserting a steel core wire e of a steel core aluminum stranded wire E into a center hole of a steel clamp S and crimping the aluminum sleeve A which is previously assembled on the left side of the drawing. It is made by shifting and covering it with pressure. Now, the side line pg is marked on the battledore portion of this aluminum sleeve, and first, a linear cut is made in the aluminum sleeve along this line, and then an annular cut is made in the annular portion including the point p.

FIG. 1 shows upper and lower tools 1 and 2 for making a notch along a line p-g mounted on the upper and lower sides of a portable press. The blades of the tools 1 and 2 are straight blades that are symmetrical and even. The blade is pressed against the p-g line from both sides, the position is changed by 2-3 degrees on the same line, and the entire length is cut. At the time of pressurization, if the blade cuts the aluminum layer and comes into contact with the steel clamp inside, the hydraulic pressure suddenly rises, so the switch may be switched at this time.

Next, the tools 1 and 2 are removed and replaced with arc-shaped blade tools 3 and 4 (FIG. 2). This presses the annular part including the p point from both sides. When the arc-shaped tools 3 and 4 on both sides hit, they are located almost outside the steel clamp S, and the aluminum layer is cut off over the entire circumference. After that, it is easy to peel off the battledore part manually, and the detent clamp becomes as shown in FIG. 6 by peeling off.

[0008]

[Effect] The weight of the portable press with tools attached is at most 7
It is about kg, and one or two workers can easily perform all the work. By using this tool, the battledore part can be easily cut off, and it is not necessary to replace it with the wire wheel passing type wire clamp.

[Brief description of drawings]

FIG. 1 is a front view of a linear tool.

FIG. 2 is a front view of an arc-shaped tool.

FIG. 3 is a perspective view of a linear tool.

FIG. 4 is a perspective view of an arc-shaped tool.

FIG. 5 is a front view of a detent clamp.

FIG. 6 is a front view after removing the battledore part.

[Explanation of symbols]

 1, 2 Linear tool 3, 4 Arc tool E Electric wire e Steel core wire S Steel clamp A Aluminum sleeve

Claims (1)

[Claims] 1. A portable hydraulic press, wherein each of the upper die and the lower die is a vertically symmetrical linear convex blade or a vertically symmetrical arcuate concave blade, and both of them can be exchangeably mounted. A tool for cutting a battledore part of a retaining clamp, characterized in that an aluminum layer of each of the side wire part or the annular part of the mouth part of the battledore part is cuttable.