JPH031520Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention mainly relates to a terminal cap for covering the cut end of a wire rope for a branch line of a utility pole or a messenger wire rope.

[Prior Art] Conventionally, the cut end b of the branch wire rope a and other messenger wire ropes is
As shown in Figure 8, the end of the wire rope consisting of the strands at the cut end b of the wire rope will come loose and spread out in all directions to prevent workers and passersby from getting their clothes caught and getting injured. Treatment is carried out by tying a wire c around the terminal part as shown in Fig. 9,
It was connected to a hook part e exposed above the ground of an anchor d buried underground.

In addition, in order to generally fix a fastener to the end of a metal filament such as a wire rope, strand, or cable, the filament end is inserted into an exterior metal cylindrical body and the exterior metal cylindrical body is pressed from the outer periphery. Alternatively, a method of compressing with a die (compression stop) is known (see, for example, Japanese Utility Model Application Publication No. 46699/1983).

Furthermore, there is a method in which a tube-forming body with a notch in the peripheral wall is fitted onto the tip of the wire rope body, and the tube-forming body is attached by binding it with wire (Utility Model No. 56-
(See Publication No. 40850).

[Problems to be solved by the invention] The compression stop described above is advantageous in that it is relatively simple, requires only small metal fittings, and does not increase the size of the terminal structure of the filament. It is sheathed from the end of the filament, and in this state is fixed by applying compressive force from the outer periphery, and is a metal cylindrical body (sleeve).
Because both ends are cylindrical with the same size, it is difficult to sheath the end of the wire rope, and the range of adaptation to the rope diameter is narrow. A cylindrical body is compressed using a press or die and fixed to the end of a wire rope, and is mostly processed and treated in a factory.

However, wire ropes for utility pole branch lines and other messenger wire ropes are cut to the required length on-site at the installation site, and the cut ends are treated on-site. It is not possible to apply vecquet processing to the part, and
Since there is no press or die to reduce the diameter of the outer metal cylindrical body, even if you compress it with pliers, it cannot be compressed evenly from the outer periphery, and it may easily fall out.
It was not possible to easily cover the cut end of the filament in the field because sharp protrusions were formed due to deformation, causing snags, etc.

For this reason, the end portion of the above-mentioned wire rope for a branch line of a utility pole is currently tied down by wrapping a wire around the cut end portion of the wire rope.

In addition, in Japanese Utility Model Application Publication No. 56-40850, since the protective tube member is fixed from above using the binding force of a wire, a considerably strong binding force is required, which is troublesome in terms of work. Wrapping and tying the wire around the cut end of the wire rope is extremely troublesome and time-consuming, and there is often a risk of injuring one's hand from the cut. Because bondage cannot completely cover the edge of the cut end of the wire rope, there were problems from a public safety standpoint, such as when attaching wire ropes to utility poles, where passersby could get their clothes caught or get injured.

The present invention has been developed in view of the above points, and its purpose is to provide an end cap that can easily cover the cut end of a wire rope without fear of falling off.

[Means for Solving the Problems] The configuration of the present invention will be explained using FIGS. 1 to 7 corresponding to the embodiments. The hollow hole 3 that can be fitted into the hollow hole 3 and the peripheral wall 5, which has a truncated conical surface 4 with the outer circumferential surface facing the top wall 6, are equally divided along the axial direction so that one reaches the center of the top wall 6. A synthetic resin bushing 8 provided with a vertically divided groove 7 can be fitted onto the outer circumferential side of the bushing 8, and the diameter of the peripheral wall 5 of the bushing 8 can be reduced by driving, so that the bushing 8 can be inserted into the wire rope cutting end portion 2. Conical cylinder part 9 to be worn
This is a wire rope end cap that covers a wire rope cutting end portion 2 with a metal cap body 11 having a convex top portion 10 for striking.

[Function] In the present invention, a bushing 8 is fitted to the cut end portion 2 of a wire rope 1 for a branch line of a utility pole, etc., and then a metal cap body 11 is fitted to the outside of the bushing 8, and its convex beating top 10 is fitted. When it is driven in, as the conical cylinder part 9 of the cap body 11 is inserted, its taper causes the peripheral wall 5 of the synthetic resin bushing 8 to tighten.
is reduced in diameter through several longitudinal grooves 7, and is firmly clamped and fixed on the outer peripheral surface of the cut end portion 2 of the wire rope, completely covering the end portion of the cut end of the wire rope 1. be able to.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 8 indicates a cut end portion 2 of a wire rope for a branch line of a utility pole or other wire rope 1.
A synthetic resin bushing that fits into the wire rope 1, with a hollow hole 3 inside that is slightly larger than the outside diameter of the wire rope 1.
is formed, and the outer peripheral surface is provided with a peripheral wall 5 formed in a truncated conical surface 4 toward the top wall 6 of the tip. The circumferential wall 5 of the bushing 8 has vertical grooves 7 formed equally along the axial direction, and one of the vertical grooves 7 is provided to reach a hole 6a bored in the center of the top wall 6. .

Although this bushing 8 has a wide width corresponding to the diameter of the wire rope due to the vertical grooves 7, several types of bushings are manufactured by changing the inner diameter dimension A of the hollow hole 3 as shown in FIG. 5 without changing the outer dimensions. In particular, it is possible to deal with thin and thick wire ropes.

Reference numeral 11 is formed to be able to be fitted to the outside of the top wall 6 of the bushing 8, and includes a tapered conical cylinder part 9 so as to reduce the diameter of the bushing 8 through the vertically divided groove 7, and a small diameter side thereof. The cap body is made of metal and has a round head 10 for hammering that can be driven into the tip of the cap. The cap body 11 is mainly made of stainless steel, but may also be made of aluminum. A circular hole 13 is provided in the center of the striking head 10 to prevent water from accumulating inside when the cap body 11 is fitted onto the outside of the bushing 8.

The bushing 8 is fitted onto the cut end 2 of the messenger wire rope 1, and then the cap body 11 is fitted on the outside of the bushing 8, and the striking head 10 is driven into the tapered conical cylinder. 9, the inner diameter of the peripheral wall 5 of the bushing 8 is reduced through the vertical groove 7, and it forms a wedge, which is strongly clamped to the wire rope end 2 and fixed so as to completely cover the cut end. be done.

[Effects of the invention] Since the present invention is constructed as described above, a synthetic resin bushing whose outer peripheral surface forms a truncated conical surface is fitted to the cut end of the wire rope. Since the vertically divided groove is open, it can be easily inserted into the cut end of the wire rope for a branch line such as a utility pole after installation at the site from the side end.Moreover, the metal cap body that is fitted to the outer periphery is Since it has a conical cylindrical portion, it is easy to fit into the bush from the side, and by hitting the hitting head at the side end with a hammer etc., the vertical groove can be created with the conical cylindrical portion. The diameter of the bushing is compressed, bites into the unevenness of the outer peripheral surface of the wire rope, and is firmly fixed, so it can be attached extremely easily to the dangerous cut end of the wire rope after construction on site, and the cut end can be easily removed. And it can be completely covered.
In addition, the installation work is very simple, as the synthetic resin bushing can be fitted to the wire rope cutting end, then the cap body is fitted, and the beating head is tapped to fix the bushing. Unlike compression stoppers, which apply compressive force from the outer periphery using a press or die to reduce the diameter and attach the outer metal cylindrical body (sleeve), these devices
No equipment or compression processing is required, and it can be easily installed on site.

Furthermore, since the conventional compression-stopping metal cylinder had the same diameter at both ends, it was difficult to insert the end of the wire rope, and if a larger one was used, the amount of compression would increase accordingly and it would be fixed. However, since the synthetic resin bushing in the terminal cap of the present invention opens from the vertical groove, it has a wide width that can accommodate differences in the outer diameter of the wire rope, and is not only convenient, but also allows the terminal cap to be By driving, the bushing can easily dig into the irregularities on the outer surface of the wire rope, making the connection more reliable and preventing it from falling off.

Therefore, no matter where the wire rope is cut, the end of the cut can be covered on the spot, and installation on site is extremely easy compared to the hassle and hassle of tying it with wire as in the past. Work efficiency can be improved, and public disasters caused by the cut edge of the wire rope, such as the cut end of the wire rope coming loose and passersby getting their clothes caught during and after the branch line tensioning work and causing damage, are reliably prevented. There is an effect that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a front view of the bushing in the wire rope terminal cap according to the present invention, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is a front view of the metal cap body.
FIG. 4 is a sectional view of the same, FIG. 5 is a sectional view showing another embodiment of the bushing, FIG. 6 is a sectional view showing the installed state in the present invention, FIG. 7 is a state diagram before installation, and FIG. FIG. 8 is an explanatory diagram showing a tensioned state of a wire rope for a utility pole branch line, and FIG. 9 is an explanatory diagram showing a conventional procedure for cutting the end of a wire rope. DESCRIPTION OF SYMBOLS 1... Wire rope for branch line, 2... Cutting end portion, 3... Hollow hole, 4... Frasted conical surface, 5... Peripheral wall, 6... Top wall, 6a... Hole, 7... Vertical division groove, 8
...Synthetic resin bushing, 9...Conical cylinder part,
10... Head for hitting, 11... Metal cap body.

Claims (1)

[Scope of utility model registration request] The circumferential wall 5 has a hollow hole 3 into which the cut end portion 2 of the branch wire rope 1 can be fitted, and has a truncated conical surface 4 on its outer surface.
A synthetic resin bushing 8 with several vertical grooves 7 reaching the hole 6a drilled in the center of the bushing 8;
Bushing 8 is fitted and driven into the bushing.
A metal cap body 1 having a conical cylinder part 9 that reduces the inner diameter of the peripheral wall 5 of the cap body 1 and a hitting head 10.
Wire rope terminal cap consisting of 1.