JPH0446514A - Jig for ripping self-supporting cable - Google Patents

Abstract

PURPOSE:To prevent a cable from being damaged, improve workability, and reduce the size of an apparatus by holding the neck with first and second rollers and then sticking a cutting blade into the held neck to rip the cable. CONSTITUTION:A pair of first rollers 12a and 12b are supported on a base. Second rollers 16a and 16b are supported on a slide base 13. The slide base 13 is slid to hold the neck 20 of a self-supporting cable (SS) 17 with the first rollers 12a and 12b and the second rollers 16a and 16b. The slide base 13 is equipped with a cutting blade 22 and a ceramics heater 23. The cutting blade 22 is stuck into the held neck 20 of the SS 17 and a jig is self-propelled along the SS 17. Thereby the neck 20 is cut open and a cable core 18 and a supporting wire 19 are separated from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a jig for cutting the cable core and support wire of a self-supporting cable in which the cable core and support wire are integrated.

<Prior art> Self-supporting cape/I-(5elf-Support
Cable (SS cable) refers to a cable that has a cable core and support wire as an integral structure. When constructing an SS cable, the cable core and support wire are cut at both ends and at appropriate locations along the way to secure connection terminals, etc. I'm trying to install both. When cutting this cable core and support wire,
This is done using a special jig.

FIG. 5 shows a conventional tearing jig, and FIG. 6 shows its operating condition.

The jig J41 is composed of a grip part 2 that is gripped by an operator, and an operating part 5 to which a tearing blade 3 and a guide reeler 4 are attached.

When the operator positions the jig 1 and grasps the gripping part 2, the operating part 5 approaches, and the cutting blade 3 moves into the S position as shown in FIG.
It pierces the neck 9 between the cable core of the S cable 6 and the support wire 8, and the guide roller 4 clamps the neck 9.

In this state, when the operator pulls the jig 1 in the longitudinal direction of the SS cable 6, the cutting blade 3 moves via the guide roller 4, cutting the neck 9 and connecting it to the cable core 7 and the support 1s.
8 is separated.

<Problems to be Solved by the Invention> When the outside temperature of the SS cable 6 is low, the sheath material such as polyethylene becomes hard, and the tearing force increases when tearing the cable core 7 and the support II 8. For this reason, when the jig 1 is used for tearing, the reaction force at the time of tearing increases, resulting in poor workability. Since the work of cutting the SS cable 6 is carried out at a height of, for example, 5 m above the ground, the working posture is not stable, and the work becomes very dangerous if the reaction force of cutting increases. Furthermore, when the gripping part 2 is grasped, the cutting blade 3 first pierces the neck, and then the guide rollers 4 grip the neck 9. Therefore, before the SS cable 6 is completely gripped by the guide rollers 4, The cutting blade 3 was stuck in the neck 9, requiring extreme care in handling.

Means for Solving the Problems> The self-supporting type cable cutting jig of the present invention for solving the above problems is a self-supporting type cable in which the cable core and the support wire are integrated. A jig for cutting wire, which includes: a base on which a first roller is supported; a sliding base supported on the base so as to be able to move toward and away from the first roller; A second member is retractably installed on the sliding base on the side opposite to the first roller and clamps the neck between the cable core and the support wire together with the first roller when the sliding base approaches the first roller. a roller, a biasing member that biases the second roller in the projecting direction, and a biasing member that is attached to the sliding base in line with the second roller, and that is attached to the sliding base by moving the sliding base toward the first roller. a cutting blade that pierces the neck when driven against the biasing force of the biasing member;
It is characterized by comprising a heating means for heating the cutting blade to a temperature within a certain temperature range.

Function> Position the base and place the first roller on the side of the neck.
When the sliding table is brought closer to the rumen side, the neck portion is held between the first roller and the second roller. Further, when the sliding table was brought closer to the first roller, the second roller was driven against the sliding table against the biasing force of the urging member, and the neck was pinched between the first roller and the second roller. The cutting blade pierces his neck. By moving the jig in the longitudinal direction of the self-supporting cable in this state, the neck portion is cut by the cutting blade, and the cable core and support wire are separated. Since the cutting blade is heated to a certain temperature range by the heating means, the cutting force does not increase even if the sheath material becomes hard.

Embodiment Example FIG. 1 shows a plan view of a self-supporting cable cutting jig according to an embodiment of the present invention, FIG. 2 shows a view taken along the line ■-■ in FIG. 1 shows the I-IN arrow direction in FIG. 1.

A pair of first rollers 12a and 12b are supported on the upper surface of the tip end (right side in FIG. 1) of the plate-shaped base 11;

A sliding table 13 is supported so as to be able to move toward and away from 12b. The sliding table 13 is stroked by an air cylinder 14 attached to the base 11 for approaching and separating.

A pair of roller support stands 15m and 15b are provided on the sliding stand 13 on the side facing the first rollers 12a and 12b, and the roller support stands 15a and 15b extend in the direction along the sliding direction of the drive stand 13. It is slidable. Roller support stand 1
5a and 15b have a second roller 16a.

16b are supported respectively, and the sliding table 13 is connected to the first roller 1.
2 a, 12 When sliding to the b side, the first roller 12
a, 12b and the second roller 16a.

16b is adapted to sandwich the neck portion 20 between the cable core 18 of the self-supporting cable (SS cable) 17 and the support #s19. (See Figure 3) Four-ra support stand 15
As shown in FIGS. 1 and 3, m and 15b are pressed against the first four-wheeler 12a by a spring 21 as a biasing member.

12b61, and the second roller 16a.

16b strokes against the spring force of spring 21! It is designed to be driven by

A tearing blade 22 is fixed to the sliding table 13 between the second four-ra 16a and 16b, and the cutting blade 22 is fixed to the sliding table 13.
A ceramic heater 23 is provided as a heating means for heating. The temperature of the ceramic heater 23 is maintained within a constant temperature range of 60° C. to 300° C. by a temperature compensation circuit (not shown). First roller 1
When the sliding table 13 is further moved toward the first rollers 12m and 12b while the neck portion 20 of the SS cable 17 is being held between the second rollers 16a and 16b, the second rollers 16a and 16b are spring-loaded. The cutting blade 22 is driven while holding the neck part 20 against the spring force of 21, and the cutting blade 22 pierces the neck part 20.

By making the first rollers 12m, 12b or the second rollers 16a, 16b rotatable, the jig can be held with the neck 20 held between the first rollers 12m, 12b and the second rollers 16m, 16b. It can be self-propelled along the SS cable 17.

The operation of the jig having the above configuration will be explained based on FIG. 4. FIG. 4 shows the operating status of the jig.

Since the SS cable 17 is normally installed at a high place, the above-mentioned jig is attached to the tip of a boom for working at high places via a slave arm and handled by operating the master arm from the ground.

As shown in FIG. 4(a), the neck 2 of the SS cable 17
0 to the first roller 12a.

12b and the second rollers 16a, 16b, and by driving the air cylinder 14, the sliding table 13 is moved to the first roller 12a.
, move it to the 12b side.

As a result, as shown in FIG. 4(b), the first roller 1
2a, 12b and the second roller 16a.

16b and the neck portion 20 is held between them.

At this time, the second rollers 16m, 16 are biased to protrude toward the first rollers 12m, 12b by the spring force of the spring 21, so the tearing blade 22 does not stick into the neck 20. Therefore, when the jig is gripped by the SS cable 17, the cutting blade 22 will not damage the jig.

First rollers 12a, 12b and second rollers 16a, 16b
After the neck portion 20 is held between the two rollers, the air cylinder 14 is driven to further move the sliding table 13 between the first rollers 12 m, 1
2 When moved to the b side, the roller support stands 15m and 15b
is driven against the biasing force of the spring 21. This brings the second rollers 16a, 16b into a state where they are driven relative to the sliding table 13, and the first roller 12a.

12b and the second rollers 16m, 16b, the tearing blade 22 pierces the neck while holding the neck 20 (the state shown in FIG. 4(C)). In this state, by moving the jig SS cable 17 in the longitudinal direction, the neck portion 20 is torn and the cable core 18 and the support @19 are separated.

Since the temperature of the cutting blade 22 is maintained within a constant temperature range by the ceramics and the cutter 23, the cutting force does not increase even when the temperature of the sheath material of the SS cable 17 is low.

Incidentally, regarding the relationship between the temperature of polyethylene as a sheath material and the tearing force, when the temperature is 0° C. or lower, the tearing force increases significantly.

In the jig described above, the first roller 12a.

12b and the second rollers 16a, 16b, the neck 20 is once held, and then the tearing blade 22 pierces the neck 20, so when the jig is gripped by the SS cable 17, the tearing blade 22 The SS cable 17 will not be damaged. In addition, since the cutting blade 22 is kept at a temperature within a certain range by the ceramic heater 23, the S.
Even if the temperature of the S cable 17 is low, the tearing force does not increase.

Cutting the SS cable 17 eliminates work at heights.
The work is carried out using a construction vehicle equipped with a master/slave robot, with a jig attached to the tip of a slave arm that ascends into the air.

When the outside temperature becomes low and the SS cable 17 becomes cold and the tearing force increases, the reaction force applied to the slave arm also increases, forcing the slave arm to be larger. As the slave arm becomes larger, the boom that supports it also becomes larger, and as a result, construction vehicles also become larger.

Cable-laying work is not necessarily carried out along wide roads, and increasing the size of cables significantly narrows the scope of application of construction vehicles. Therefore, reducing the cutting force by heating the cutting blade 22 makes it possible to downsize the construction vehicle.

<Effects of the Invention> The self-supporting cable cutting jig of the present invention is configured such that the neck is held between the first roller and the second roller, and after the neck is held, the cutting blade is pierced into the neck. When the jig is gripped onto the self-supporting cable, there is no risk of damaging the self-supporting cable with the tearing blade. As a result, handling of the jig becomes easier. Further, since the temperature of the cutting blade is maintained within a certain range by the heating means, the cutting force does not increase even if the temperature of the self-supporting cable is low. As a result, work efficiency is improved, the equipment that holds the jig can be made smaller, and cutting operations can be performed remotely.
Improves safety.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a self-supporting cable cutting jig according to an embodiment of the present invention, FIG. 2 is a view taken along the line ■-■ in FIG. 1-1s arrow view, FIG. 4 is an explanatory diagram of its operating situation, FIG. 5 is a perspective view of a conventional self-supporting cable cutting jig, and FIG. 6 is an explanatory diagram of its use. In the drawing, 11 is a base, 12m and 12b are first rollers, 13 is a sliding table, 14 is an air cylinder, 15a and 15b are roller support stands, 16 a and 16 b are second rollers, and 17 is a self-supporting type. Cable (SS cable), 18 is a cable core, 19 is a support wire, 20 is a neck, 21 is a spring, 22 is a cutting blade, and 23 is a ceramic heater. Figure 4 (b)

Claims (1)

[Claims] A jig for cutting a support wire of a self-supporting type cable in which a cable core and a support wire are integrated, the jig having a base on which a first roller is supported, and a jig that can be freely driven toward and away from the first roller. a sliding table supported by the base; and a sliding table provided on the side opposite to the first roller so as to be retractable from the sliding table, and when the sliding table approaches the first roller, the cable core and the a second roller that clamps the neck between the support lines together with the first roller; a biasing member that biases the second roller in the projecting direction; A cutting blade that pierces the neck when the second roller moves against the biasing force of the biasing member due to the movement of the moving table toward the first roller, and A self-supporting cable cutting jig characterized by comprising a heating means for heating the cable to a certain temperature.