JPH04118713U - Auxiliary jig for cutting insulation cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an auxiliary jig for cutting an insulating cover that can quickly cut and remove the insulating cover of an insulated trolley wire with good workability without damaging the conductor. [Structure] An insertion piece for inserting from the opening of the insulating cover 5 of the insulated trolley wire 3 into the left and right gaps between the conductor 4 of the insulated trolley wire 3 and the insulating cover 5 to push the insulating cover 5 outward. An auxiliary jig 1 for cutting an insulating cover, which includes at least two pieces of 2 integrally provided. [Effect] Since at least two insertion pieces 2 are integrally provided, fewer insertion operations are required. In addition, since two or more insertion pieces 2 are inserted between the conductor 4 and the insulating cover 5, the auxiliary jig 1 is firmly held on the insulated trolley wire 3 and will not fall out even if it is not supported by hand during cutting. Moreover, since the work can be carried out in a stable condition, troubles such as damage to the conductor 4 are also eliminated.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a method to locally remove the insulation cover of an insulated trolley wire installed in a factory, etc. This invention relates to an auxiliary jig for cutting insulating covers used when cutting.

0002

[Conventional technology]

An insulated trolley used as an electricity supply source for cranes, trolleys, etc. running in factories. The - wire is a conductor with a figure-8 cross section and a knot in the center, as shown in the cross-sectional view in Figure 4. 4 is closely covered with an insulating cover 5 having a U-shaped cross section to insulate the top and sides of the conductor 4. It has a structure that increases safety by covering it and exposing only the bottom part, which serves as the electrical outlet surface. be. Therefore, when branching the insulated trolley wire 3 having such a structure, Remove the edge cover 5 to a required length of 100 to 150 mm, and install other conductors in this removed portion. The insulation cover 5 is made of high-strength plastic material. Therefore, in order to remove the insulating cover 5 locally, cut both ends of the part to be removed with a saw. This was done using a method of cutting.

0003

[Problem that the idea aims to solve]

By the way, such an insulated trolley wire has an insulating cover that is in close contact with the conductor, so it has special characteristics. In this case, the insulating cover of the tangled central part of the insulated trolley wire as shown in Figure 4 is attached to the conductor. To cut without damaging the wire, place a dry cloth between the tangled conductor and the insulating cover. Insert the bar, push the insulation cover outward, and then cut it with a saw. It was done more. However, the screwdriver can only be inserted into the gap between the conductor and the insulating cover. The screwdriver may fall off due to vibration during cutting, so support the screwdriver with one hand and hold the screwdriver with the other hand. To cut the insulating cover with a saw and remove the specified length of the insulating cover, use a screwdriver. It was necessary to replace and cut it at different locations on the left, right, front and back. In this way, cutting and removing the insulating cover is not easy to work with, and the insulating cover cannot be extruded. Since this is done under unstable conditions, there is a problem in that the conductor is easily damaged.

0004

[Means and actions to solve the problem]

This invention was created as a result of various studies in view of the above situation, and its purpose is Place the insulated cover on the insulated trolley wire to make it easier to work without damaging the conductor. An object of the present invention is to provide an auxiliary jig for cutting an insulating cover that can quickly cut the insulation cover. That is, in the present invention, an insulating cover with a U-shaped cross section is attached to a conductor that has a 8-shaped cross section and is tied in the center. This is an auxiliary jig for cutting the insulating cover of an insulated trolley wire tightly covered with the insulating cover. Insert the tangled part of the conductor from the opening of the bar into the gap on the left and right of the conductor and the insulation cover. At least two insertion pieces for pushing out the insulating cover to the left and right are integrally provided. It is characterized by:

[0005] The present invention will be specifically explained below with reference to the drawings. Figures 1 and 2 show an auxiliary jig for cutting the insulation cover of the present invention (hereinafter abbreviated as the auxiliary jig). FIG. The auxiliary jig 1 shown in FIG. 1 has a U-shaped cross section with two integrated insert pieces 2, Further, the auxiliary jig 1 shown in FIG. 2 has four insertion pieces 2 provided integrally. Figure 3 shows the insertion piece 2 of the auxiliary jig 1 connected to the conductor 4 of the insulated trolley wire 3 and the insulated cover. 5 is a sectional view showing a state in which the insertion pieces 2 are inserted into the left and right gaps of the insert pieces 5, and at least two insertion pieces 2 are completely The edge cover 5 is pressed against the conductor 4 by its restoring force, so the auxiliary jig must be supported by hand. Even without it, it will not fall off due to vibration during cutting. The auxiliary jig 1 shown in FIG. Change the position and cut another predetermined location to remove a predetermined length of the insulating cover 5. In addition, two of the auxiliary jigs 1 are prepared, and they are insulated in advance. Insert the Lolly wire 3 into the specified location at a specified interval, and do not re-insert it. It may also be used by cutting and removing the insulating cover 4. In addition, the auxiliary jig 1 shown in FIG. It can be inserted in one push operation, and the four insertion pieces 2 fit into the gap. Since it is inserted and clamped, the auxiliary jig 1 connects the conductor 4 of the insulated trolley wire 3 and the insulated cover. It is held more firmly between 5 and 5.

[0006] In the present invention, the auxiliary jig 1 shown in FIG. 1 is, for example, a steel sheet of a required size. It can be manufactured by joining both ends and forming it into a U-shape. Also in Figure 2 The shown auxiliary jig is made by cutting the upper side of the middle part of the U-shaped molded body to a predetermined length. It can be made by dropping it. In this invention, the distance between the tips of the two left and right pairs of insert pieces is approximately the diameter of the conductor. If the tip of the insertion piece is tapered to make it sharp, it will be easier to insert it. The piece can be inserted smoothly and without damaging the conductor. The auxiliary jig of the present invention may be made of copper alloy materials or high-grade materials in addition to ferrous materials such as the steel mentioned above. Any material with high strength and excellent elasticity can be used, such as molecular materials.

[0007]

【Example】

Using a steel auxiliary jig with a length of 100 mm and the shape shown in Figure 2, Extrude the tied part of the insulating cover of the wire into the shape shown in Figure 2, and then Cut the two parts of the insulation cover pushed out by the insert pieces with a saw in the circumferential direction, and remove the insulation cover. The bar was removed over a length of 120 mm. It takes about 3 minutes to remove the cut, and it is better to insert a conventional screwdriver and cut it. It took about 1/3 of the time required by the method. Also, there was no damage to the conductor at all. The insulation cover was cut using the auxiliary jig with four insert pieces shown in Figure 2. I explained how to remove it, but I used an auxiliary jig with two insert pieces shown in Figure 1. Even when using this method, the insulation cover can be removed without damaging the conductor in about half the time of the conventional method. It could be cut and removed.

[0008]

【effect】

As mentioned above, if the auxiliary jig of the present invention is used, the insulation cover of the insulated trolley wire can be can be quickly cut and removed without damaging the conductor.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of an auxiliary jig for cutting an insulating cover according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the insulating cover cutting auxiliary jig of the present invention.

FIG. 3 is a sectional view showing a state in which the insertion piece of the insulating cover cutting auxiliary jig of the present invention is inserted between the conductor of the insulated trolley wire and the insulating cover.

FIG. 4 is a cross-sectional view of an insulated trolley wire.

[Explanation of symbols]

1 Auxiliary jig for cutting insulation cover 2 Insert piece 3 Insulated trolley wire 4 conductor 5 Insulation cover

Claims (1)

[Scope of utility model registration request] 1. An auxiliary jig for cutting an insulating cover of an insulated trolley wire in which an insulating cover having a U-shaped cross section is closely covered over a conductor having a figure-8 cross-section and a tangled center, the insulating cover having an opening. A device for cutting an insulating cover characterized by integrally providing at least two insertion pieces for inserting into the left and right gaps between the conductor and the insulating cover from the part and pushing out the insulating cover left and right at the part where the conductor is tied. Auxiliary jig.