JPH04261314A - Aluminum-wire cutter of steel-cored aluminum cable - Google Patents

Abstract

PURPOSE:To easily cut an external layer constituting aluninum strand by rotating a cutter-holding member and cutter-driving ring around the shaft center of a transmission line held through a gripping member and by advancing the cutter to the center of the transmission line through the relative rotation between the holding member and driving ring. CONSTITUTION:The boss 3a of an annular cutter-holding member 3 is rotatably fitted via a bearing to the inside a bearing ring 2 with axis directed horizontally. The holding member 3 and cutter-driving ring 11 are rotated by unshown motor via chain sprocket 3b of the outer peripheral part of the holding member 3 and a chain 4. An electric wire W is inserted through the gripping member 15 and held from above under, and the edge 6 of a roller-cutter 5 is brought into contact with the wire. The holding member 3 causes the roller-cutter 5 to rotate in one direction around the wire W and the driving ring 11 rotates slightly after in the same direction. By the relative rotation between the holding member and driving ring, the roller-cutter 5 is pressed by a cam 11c to cut an aluminum strand A toward the center of the wire W. Thus, the aluminum strand is cut accurately and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION (Prior Art) As high-voltage power transmission lines, steel-core aluminum stranded wires in which the outside of a steel core wire is covered with aluminum stranded wires are generally used. When connecting these steel-core aluminum stranded wires (power transmission lines) to each other, the aluminum strands at the ends are cut to expose the steel-core wires, and the steel-core wires are compressed and connected with a steel sleeve. The method is to cover the aluminum sleeve with an aluminum sleeve and reconnect the whole thing by compression. Conventionally, stranded aluminum wires have been cut manually.

(Problem to be solved by the invention) Some power transmission lines are large, with a diameter of up to 50 mm, and manually cutting the aluminum strands of such power lines is laborious and inefficient. It is also a target.

Therefore, the present invention enables the cutting of aluminum stranded wires in the outer layer of power transmission lines.
The object of the present invention is to provide a device that can perform processing efficiently and with high precision without manual work.

(Means for Solving the Problems) In the present invention, in order to solve the above problems, the power transmission line W
A gripping member 15 provided to fix the
An annular cutter holding member 3 is provided to be rotated by a drive motor M around the axis of the power transmission line W held by the gripping member 15, and an annular cutter holding member 3 is positioned opposite to each other on both sides of the power transmission line W. A roller cutter 5 is mounted on the cutter holding member 3 and is provided so as to be able to approach each other a predetermined distance to cut the outer layer aluminum stranded wire A of the power transmission line W and move away from each other. A cutter drive ring 11 is rotatably provided concentrically with the cutter holding member 3 so as to rotate with a delay with respect to the rotation of the roller cutter 3; A cam 11c that moves the roller cutter 5 to perform a cutting operation based on a rotational phase difference with the holding member 3 is provided to constitute an aluminum wire cutting device for a power transmission line W.

(Function) When cutting the aluminum stranded wire A on the outer layer of the power transmission line W using the aluminum wire cutting device of the present invention, first, the power transmission line W is held by the gripping member 15 and held in a predetermined position. Fix it.

Then, a driving means such as a motor M is activated to rotate the cutter holding member 3 and the cutter driving ring 11. The cutter holding member 3 rotates in one direction so that the roller cutter 5 revolves around the power transmission line W. Cutter holding member 3
While the cutter drive ring 11 rotates, the cutter drive ring 11 rotates in the same direction with a slight delay, so that a slow relative rotation occurs between the two. This relative rotation causes the roller cutter 5 to
is pushed by the cam 11c and gradually advances toward the center of the power transmission line W, cutting into the aluminum stranded wire A while revolving. Then, when the roller cutter 5 cuts the aluminum stranded wire A, the roller cutter 5 returns to its original position according to the cam 11c.

(Example) An example of the present invention will be described with reference to the drawings. In the figure,
1 is a main body frame, and a bearing ring 2 is fixed onto this frame 1 via an arm 1a with its axis oriented horizontally. As shown in FIG. 4, a boss 3a of an annular cutter holding member 3 is rotatably fitted inside the bearing ring 2 via a bearing.

A chain sprocket 3 is attached to the outer periphery of the cutter holding member 3.
b is fixed, and the cutter holding member 3 can be rotated by a motor M via a chain 4. As shown in FIG. 5, a pair of opposing roller cutters 5 are attached to the cutter holding member 3.

The roller cutters 5 are mounted on the cutter holding member 3 so that they can be positioned opposite to each other on both sides of the power transmission line W installed so as to pass through the center of the cutter holding member 3. It is provided so that it can approach a predetermined distance to cut the outer layer of aluminum stranded wire of the power transmission line W and move away from it. That is, the roller cutter 5 includes a disk-shaped blade 6 with a sharp outer periphery and a bracket 7 that rotatably holds the blade. is fitted into the guide fitting 8 attached to the cutter holding member 3 in a freely movable manner, and an engaging protrusion 7b protruding from the bracket 7 toward the cutter holding member 3 is formed to be long in the radial direction on the cutter holding member 3. The guide hole 3c is freely movably engaged with the guide hole 3c. A return spring 9 is inserted into the guide hole 3c to push the engagement protrusion 7b and urge the roller cutter 5 outward from the cutter holding member 3. Further, a guide roller 10 for pushing the bracket 7 in the radial direction of the cutter holding member 3 is rotatably attached.

The cutter drive ring 11 has a sprocket 11a on its outer periphery, and is rotatably provided concentrically with the cutter holding member 3. That is, the cutter drive ring 11 has an annular sliding groove 11b on the side facing the cutter holding member 3. A guide rib 3d annularly extending along the outer periphery of the cutter holding member 3 and protruding in the axial direction is slidably fitted into the sliding groove 11b. In addition, cutter drive ring 1
1 is prevented from coming off in the axial direction by a presser metal fitting 12 fixed to the cutter holding member 3 and having an L-shaped cross section. The sprocket 11a is connected to the motor M via the chain 13, but since the pitch of its teeth is small, it rotates with a delay in rotation of the cutter holding member 3.

A cam 11c for stirring the roller cutter 5 is formed on the inner circumference of the cutter drive ring 11. Cam 11c
When a predetermined rotational phase difference occurs between the cutter drive ring 11 and the cutter holding member 3, the guide roller 10 is pressed by the cam surface, and the blade 6 is moved against the cutter holding member against the spring 9. You can push it towards the center of 3.

The frame 1 is provided with a grip member 15 located on the front side of the cutter drive ring 11 for fixing the power transmission line W received at the center thereof.

The gripping member 15 consists of a lower fixed gripping member 16 attached to the horizontal rod 1b and an upper movable gripping member 17, and both can tighten the power transmission line W up and down. The fixed gripping member 16 is fixed on the horizontal rod 1b of the frame 1. The movable gripping member 17 is attached to the arch portion 1c of the frame 1 via a threaded rod 18 so as to be movable up and down. That is, the threaded rod 18 passes through a nut 19 fixed to the center of the arch portion 1c and is vertically movable up and down.

A handle 2 for lifting and lowering is attached to the top of the threaded rod 18.
0, and a movable gripping member 17 is attached to the lower part.

Reference numeral 21 denotes a mounting position regulating member which is horizontally movably provided on the frame 1 at a predetermined distance from the blade 6, and the distal end of the power transmission line W is brought into contact with this to determine the mounting position of the device. A limit switch 22 for checking whether the steel core wire S is in contact is built in a portion of the mounting position regulating member 21 that is brought into contact with the power transmission line W. The device is activated upon confirmation of this contact. In addition, the power transmission line W
has a property that when cut, the steel core wire S becomes slightly shorter than the aluminum stranded wire A. Therefore, the limit switch 22 is equipped with a stylus 22a that reaches the end face of the steel core wire S, and the limit switch 22 is operated via this stylus 22a. The mounting position regulating member 21 is attached to the frame 1
It is provided so as to be movable along a pair of parallel guide rods 25 fixed horizontally above. The mounting position regulating member 21 includes
A threaded rod 24 rotatably supported on the frame 1 is screwed in parallel to the guide rod 25, and the distance to the blade 6 is adjusted by turning the handle 23 and rotating the threaded rod 24 to advance or retreat. be able to.

Thereby, the cutting length of the aluminum stranded wire A is adjusted.

When cutting the aluminum stranded wire A of the outer layer of the power transmission line W using the aluminum wire cutting device of this embodiment, first the power transmission line W is inserted between the fixed gripping member 16 and the movable gripping member 17. . When the power transmission line W is inserted for a predetermined length, the end face of the steel core wire S pushes the stylus 22a of the limit switch 22 and closes the contact in the power supply circuit of the motor M. After confirming this state manually or automatically, the handle 20 is turned to lower the movable gripping member 17 and grip the power transmission line W between it and the fixed gripping member 16. Once gripping of the power transmission line W is confirmed manually or automatically, the motor M is started to rotate the cutter holding member 3 and the cutter drive ring 11.

The cutter holding member 3 rotates in one direction so that the roller cutter 5 revolves around the power transmission line W. While the cutter holding member 3 rotates, the cutter drive ring 11 rotates in the same direction with a slight delay, so that a slow relative rotation occurs between the two. Due to this relative rotation, the roller cutter 5 is pushed by the cam 11c and gradually moves toward the center of the power transmission line W, and the blade 6 cuts into the aluminum stranded wire A while revolving around the power transmission line W.

Then, when the roller cutter 5 has cut only the aluminum stranded wire A, the roller cutter 5 returns to its original position according to the cam 11c. This completes the series of cutting operations.

Note that the cutting depth of the roller cutter 5 is controlled by the cam 11c, so that the roller cutter 5 does not damage the steel core wire.

(Effects of the Invention) As described above, in the present invention, the gripping member 15 provided to fix the power transmission line W at a predetermined position and the axis of the power transmission line W gripped by the gripping member 15 are provided. Center it,
An annular cutter holding member 3 is provided to be rotated by a drive motor M, and an annular cutter holding member 3 is mounted on the cutter holding member 3 so as to be positioned opposite to each other on both sides of the power transmission line W. A roller cutter 5 is provided to cut the outer layer aluminum stranded wire A and to separate it, and a roller cutter 5 rotates concentrically with the cutter holding member 3 so as to rotate behind the rotation of the cutter holding member 3. A cutter drive ring 11 is freely provided, and a cutter holding member 3 is provided on the cutter drive ring 11 so as to engage with the roller cutter 5.
Since the aluminum wire cutting device for the power transmission line W is equipped with a cam 11c that moves the roller cutter 5 to perform a cutting operation due to a rotational phase difference between This has the effect of being able to cut accurately and efficiently without cutting.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG.
-261314(4) is a front view of the aluminum wire cutting device, Figure 2 is a side view of the aluminum wire cutting device, Figure 3 is a plan view of the aluminum wire cutting device, and Figure 4 is a front view of the aluminum wire cutting device.
The figure is a sectional view of the cutting mechanism section of the aluminum wire cutting device, FIG. 5 is a front view of the cutting mechanism section, and FIG. 6 is a rear view of the cutting mechanism section. DESCRIPTION OF SYMBOLS 1... Frame, 3... Cutter holding member, 5... Roller cutter, 11... Cutter drive ring, 1
1c...Cam, 15...Gripping member, A...Aluminum stranded wire, M...Drive motor, S...Steel core wire, W...Electric wire. Patent applicant Sanwa Tekki Co., Ltd. Patent applicant GPP Co., Ltd. Agent Patent attorney Tadashi Otsuka

Claims (1)

[Claims] A gripping member provided to fix a power transmission line in a predetermined position;
an annular cutter holding member provided to be rotated by a drive motor; and an annular cutter holding member mounted on the cutter holding member opposite to each other on both sides of the power transmission line passing through the center of the cutter holding member, and close to each other by a predetermined distance. a roller cutter that is provided to cut the aluminum stranded wire of the outer layer of the power transmission line and to be able to separate it; and a roller cutter that is concentric with the cutter holding member so as to rotate with a phase difference with respect to the rotation of the cutter holding member. a cutter drive ring rotatably provided on the cutter drive ring; a cutter drive ring provided on the cutter drive ring to engage with the roller cutter;
An aluminum wire cutting device for steel-core aluminum stranded wire, comprising: a cam that moves the roller cutter in the radial direction of the cutter holding member to perform a cutting operation based on a rotational phase difference with the cutter holding member.