JPH05190036A - Deformed-shape segment mingled cable twisting device - Google Patents

Abstract

PURPOSE:To provide good twisting by subjecting respective segments to forming processes of almost equal draft so as to provide uniform back-tension. CONSTITUTION:A deformed-shape segment, for example a finned segment 3B, is mounted on a segment supplying part 11 with it preformed in advance. The other fin-less segment 3A, the cross-section of which is round, is also mounted. At the forming part, the fin-less segment 3A is formed by means of an ordinary sector-roll, the finned segment 3B is formed by means of a sector-roll containing almost equal number of rollers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the mixing of deformed segments in which a sector having a fan-shaped cross-section is twisted in advance, and a cable having a cross-section having twisted fins is mixed. The present invention relates to a cable twisting device.

[0002]

2. Description of the Related Art For example, an aluminum stranded wire with a steel core (AC
SR), an overhead ground wire (OPGW) containing an optical fiber, and the like form a basic structural portion by twisting aluminum element wires. Here, in order to smooth the outer shape after twisting,
There is a structure in which the wire is preliminarily molded into a fan-shaped cross section and the wires are twisted together. FIG. 2 shows a conventional ACS of this type.
The R sectional view is shown. The ACSR 1 shown in the figure is formed by twisting a steel wire 2 in the center and then twisting a number of segments 3 each having a fan-shaped cross-section in layers. A finned segment 3 </ b> B provided to have a snow-diffusing effect is twisted into the ACSR 1. The other is the normal finless segment 3A. The ACSR 1 as shown in FIG. 1 is manufactured by the following device.

FIG. 3 shows a side view of a conventional segment type cable twisting device. In the figure, this device is composed of a segment supply unit 11, a molding unit 12, and a twisting unit 13, and on the left side of the twisting unit 13, a winding drum (not shown) for winding the ACSR 1 is arranged. In the figure, a cage 5 is arranged in the segment supply section 11, and the finless segment 3A shown in FIG. 2 and a drum for supplying the steel wire 2 arranged at the center are accommodated therein. .. The molding part 12 includes a guide pipe 6 for guiding the steel wire 2 and an eye plate 10 which rotates integrally with the cage 5.
Are arranged.

This device has a construction in which the finless segment 3A is twisted around the steel wire 2 while rotating the cage 5 and the eye plate 10. A sector roll 7 for forming the finless segment 3A into a fan-shaped cross section is arranged on the right side surface of the eye plate 10. In the apparatus having the configuration as shown in the figure, a round aluminum wire having a round cross section supplied from the cage 5 is molded so as to be sandwiched between the sector rolls by the sector rolls, processed into a fan-shaped cross section, and guided to the twisted port 14. As a result, the finless segments 3 </ b> A are twisted in layers around the steel wire 2 at the twisting port 14.

FIG. 4 shows a side view of another conventional twisted cable mixing device of different shape segments. The device shown is largely
It has the same configuration as the device shown in FIG. In addition, this device,
For example, one finned segment 3B is mixed with the finless segment 3A and twisted together. Therefore, this device is provided with a finned segment 3B on the eye plate 10.
There is provided a sector roll 8 having a combined structure for molding the. The number of sector rolls 8 is larger than that when other finless segments 3A are formed, for example, 3
It consists of 4 to 4 rolls. This is because the aluminum wire having a round cross section is molded into a fan-shaped cross section, and the projection is further provided, so that it is not possible to perform sufficient molding with only one pass. According to the apparatus having the above-described configuration, it is possible to manufacture an ACSR having a cross-sectional shape as shown in FIG. 2 while molding a round aluminum wire having a cross-section that is mounted in advance in the segment supply unit 11. It should be noted that almost the same thing is performed for the production of OPGW.

[0006]

By the way, the deformed segment mixed cable twisting apparatus shown in FIG. 4 is manufactured especially while favorably molding the finned segment 3B and preventing the sector roll 8 from being worn. To do
It was necessary to significantly reduce the linear velocity as compared with the device shown in FIG. Further, since the finned segment 3B is supplied to the twisting port 14 while being molded by many sector rolls, a large back tension is applied as compared with the other finless segment 3A. As a result, there is a problem that the fitting of each segment in the twisted hole 14 is poor and the cross-sectional shape is distorted. Further, as shown in FIG. 2, when the segments are twisted into two or more layers, the tension of each segment may differ between the layers, and the twist pitch of each segment may be disturbed.

In order to prevent these, for example, it is conceivable to mold the finned segment 3B in advance and mount it on the cage 5. However, in this case, on the contrary, the back tension of the finned segment 3B becomes lower than the back tension of the other finless segment 3A, so that the twisting hole 14 also suffers from the problem of the fitting, and the segment rises and the pitch is reduced. It causes disorder.
The present invention has been made by focusing on the above points, and it is possible to satisfactorily and stably perform twisting of a cable including a deformed segment having a complicated cross-sectional shape such as the finned segment described above. An object is to provide a mixed cable twisting device.

[0008]

DISCLOSURE OF THE INVENTION A deformed segment mixed cable twisting device according to the present invention comprises a segment supply section, a molding section for molding this segment into a predetermined cross-sectional shape, and a post-molding segment for gathering and twisting. A deformed segment having a complicated cross-sectional shape different from that of the other segments is provided in the segment supply unit in a preformed state. ..

[0009]

In this apparatus, the deformed segment, for example, the finned segment 3B, is attached to the segment supply section 11 in a preformed state. As for the other finless segment 3A, one having a round cross section is mounted. In the molding part, the finless segment 3A is molded with a normal sector roll,
The finned segment 3B is also formed by a sector roll including approximately the same number of rolls. As a result, each segment
Molding treatment with almost the same degree of processing is performed, the back tension becomes uniform, and good twisting is possible.

[0010]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a side view showing an embodiment of a twisted cable mixing device of different-shaped segments of the present invention. In the figure, this device is composed of a segment supply unit 11, a molding unit 12, and a twisting unit 13. A winding device (not shown) is provided on the left side of the twisted portion 13, and, for example, the ACSR 1 is manufactured and wound by this device. Segment supply unit 1
1, a cage 5 is arranged, and a guide pipe 6 is provided to guide the steel wire 2 which is the center. Further, the molding part 12 is provided with an eye plate 10 that rotates together with the cage 5. The twisting portion 13 is provided with a twisting port 14 for gathering the finless segments 3A and the finned segments 3B that have passed through the mesh plate 10 and twisting them around the outer circumference of the steel wire 2.

Here, in the apparatus of the present invention, the cage 5 is fitted with the preformed deformed segment 3C. For example, when four pairs of sector rolls are required to form the finned segment 3B, the deformed segment 3C that has been formed by the three pairs of sector rolls in advance is attached to the cage 5. Further, in the device of the present invention,
0 is provided with sector rolls 7 and 15 for forming each segment, but the finless segment is 3A.
Each of the sector roll 7 for molding and the sector roll 15 for molding the finned segment 3B has a pair of configurations.

According to the hybrid segment mixed cable twisting apparatus of the present invention having the above-mentioned structure, as shown in FIG. 1, the finless segment 3A and the finned segment 3B are respectively supplied from the segment supply section 11 and are substantially the same. After being molded by the sector roll 7 or 15 of the constitution,
It passes through the eye plate 10 and is guided to the twist opening 14. In this case, the finned segment 3B is supplied to the sector roll 15 after being molded for about 3 passes in advance.
The resistance for molding in is almost the same. Therefore, the untwisted segment 3A and the finned segment 3 to which almost the same back tension is applied to the twisting port 14 are provided.
B is supplied.

As a result, the twisting of the twisting and the ups and downs of the segments due to the variation of the back tension as in the prior art do not occur. Therefore, the linear velocity can be increased by a factor of two or several times or more in the apparatus of the present invention, as compared with the case where the linear velocity is greatly decreased when the heterogeneous segments of this kind are mixed. In addition, as shown in Fig. 2, when twisting a cable having multi-layered segments,
In order to prevent the twist distortion, the process shown in FIG. 4 was performed twice or more as needed to manufacture the cable. However, according to the apparatus of the present invention, the back tension of each segment is made substantially equal and uniform. Since it can be maintained, multilayer twisting is possible at once. Therefore, the total processing cost can be reduced from one half to one third of the conventional one. The present invention is not limited to the above embodiments. In the above embodiment, an example of manufacturing a cable in which one finned segment is mixed with other finless segments is shown, but a configuration in which two or more finned segments are mixed is also possible. Good. Further, the present invention can be applied to the case where the cross-sectional shape is a segment having a complicated shape different from that of other segments, and it is not always necessary to have fins.

[0014]

As described above, the apparatus for twisting mixed-shape segment cables according to the present invention described above mounts a different-shaped segment on a segment supply section in a preformed state and molds it using the same sector rolls as other segments. Therefore, the back tension of each segment does not vary, and the twisting can be favorably performed. As a result, ACSR and O with stable characteristics without disorder of twisting
It becomes possible to supply PGW and the like.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a cable twisting device for a mixture of odd-shaped segments according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a mixed cable of different-shaped segments.

FIG. 3 is a side view of a conventional segment type cable twisting device.

FIG. 4 is a side view of a conventional twisted cable mixture device for mixed odd-shaped segments.

[Explanation of symbols]

 1 ACSR 5 Cage 7,15 Sector roll 10 Eye plate 3A Finless segment 3B Finned segment 11 Segment supply part 12 Molding part 13 Twisting part

Claims (1)

[Claims] 1. A segment supply unit, a molding unit that molds this segment into a predetermined cross-sectional shape, and a twisting unit that gathers and twists the molded segments together with other segments among the segments. An odd-shaped segment mixed cable twisting device, wherein odd-shaped segments having different complicated cross-sectional shapes are mounted in the segment supply section in a preformed state.