JPH04108191A - Long pitch cable - Google Patents

Abstract

PURPOSE:To sufficiently prevent the subject cable from corroding by filling an excessive amount of a filler into the spaces between element wires collected through arrangement plates, squeezing out the excessive portions of the filler with a shaping device and subsequently covering the collected and filled wires with a covering material. CONSTITUTION:The respective element wires of an element wire bundle are inserted into the respective insertion holes of the arrangement plates of an arrangement plate group, and while the arrangement plates are rotated with a twist rotation member 40 to collect the element wires with a shaping member 50, an excessive amount of a filler is filled into spaces between the element wire bundle. While or after the excessive filler is squeezed out with the shaping member 50, a tape is wound on the collected element wires through a shape- holding member 70 by the use of a tape-winding member 60.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a long pitch cable used in a cable section of a suspended structure such as a cable-stayed bridge, TLP, or suspended roof.

(Prior Art) The long pitch cable (hereinafter simply referred to as cable) 10 according to the present invention may be used for a cable portion of a suspended structure such as a cable-stayed bridge or a suspended roof. Anchor C is fixed between tower A and girder B as shown in the figure,
It is being constructed.

This cable 10 weighs 140 to 250 kg/
A wire bundle is constructed by bundling a plurality of steel wires having a tensile strength of It is constructed by covering.

As is known, its cross-sectional shape is generally circular or hexagonal in cross-section.

Furthermore, this cable has certain advantages in that it has excellent tensile strength and elastic modulus as a bundle, and is flexible enough to be wound into a reel for transportation.

Conventional cables have the above-mentioned configuration, and as an example of this manufacturing method, the applicant previously disclosed
No. 6786 (hereinafter referred to as the prior application example).

) proposed the invention shown in

The above-mentioned prior application example has a so-called wire bundle with a predetermined pitch.
Is it related to a long pitch cable manufacturing method and its manufacturing device? In detail, as stated in the publication of the same prior application,
A plurality of array plates are stacked one on top of the other so that the insertion holes drilled in each array plate match, and in this state, each strand of the strand bundle is inserted into the insertion hole of the strand plate, and then each element of the strand bundle is inserted into the insertion hole of the strand bundle. The array plate with the wires inserted therein is moved in the length direction of the strand bundle, and the strands are arranged at a predetermined distance from each other and rotatably supported, and then the base of the strands is fixed to form the strand bundle. The tip of the strand is rotated together with the array plate, and after twisting is applied to the strand bundle at a predetermined pitch, or while being twisted at a predetermined pitch, the twisting rotation part is rotated along the twisted strand bundle. In this invention, the bundle of wires formed into a predetermined cross-sectional shape is bound with a binding material.

(Problems to be Solved by the Invention) The conventional cables are as described above, and the cables have the following problems. In other words, ■ When a large number of wires are bundled together using a binding material such as tape, as long as there is some space left inside the wire bundle, internal dew condensation will occur due to temperature changes and rusting of the wires will occur. There is a strong fear of attracting people.

Furthermore, due to damage to the binding material, rust-causing substances such as rainwater and seawater often enter the internal voids from the outside into the voids between the wires, resulting in insufficient rust prevention.

■As aggregates of wire bundles are bundled together using a binding material such as tape, depending on their outer shape after being bundled, they may be strongly affected by wind, making it difficult to use cables for suspended structures such as cable-stayed bridges and suspended roofs. When installed, a so-called gearropping vibration occurs, which causes the cable itself to vibrate, affecting the suspended structure, which is undesirable. Also, the appearance of the cable is poor as a result of covering the outer periphery with a covering material. ■Cable Since the cable is composed of a large number of bundles of wires, the wire bundles are twisted at a predetermined pitch, so the length of the cable tends to be insufficiently controlled. It was invented in consideration of the following points, and its purpose is to sufficiently prevent the cable from rusting, create a cross-sectional shape that minimizes the influence of wind, and improve cable length management. The point is to provide cables that can be made with precision.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned points, and provides a configuration for a long pitch cable in which a bundle of strands is formed in each insertion hole of a plurality of array plates. A long-pitch cable in which a wire is inserted and then the array plate is rotated to give a twist of a predetermined pitch to the bundle of wires, which passes through the array plate and is formed by a forming die or a group of forming rollers. Consistency 1, which includes the excess filling amount that is squeezed out during convergence forming by the forming device into the gap within the strand bundle while being converged by the device.
00 to 600 non-dripping filler is sealed, and then the surplus of the filler is squeezed out using the above-mentioned molding equipment. In addition to the invention of the cable and the basic structure of the long pitch cable, a filament shape-retaining material is provided between the outer periphery of the strand bundle and the covering material, and on the outer periphery of the strand bundle. This invention adopts the invention of the structure and the invention of the structure in which the core wire of the wire bundle is marked to indicate the cable length, and the marking is transferred to the outer periphery of the wire bundle.

(Function) The reason why the cable according to the present invention is configured as described above is as follows.

The reason why we have adopted a structure in which the voids between the wires that make up the wire bundle are filled with a non-dripping filler for rust prevention, which is easy to fill, in an amount that includes excess filler is to eliminate harmful rust-causing substances between the wires. This is to prevent the intrusion of rust, thereby obtaining a sufficient rust prevention effect.

As the non-dripping filler, an oil that does not drip even at high temperatures, so-called non-dripping filler (oil that does not drip even at 300°C, but rather carbonizes) is used, and the material is
Grease, dropping point: no drip point (JIS K2220),
It is sufficient if it has a property of consistency (hardness) of 100 to 600, for example, consistency (hardness); 100/+000
(JIS K2220) non-drop point grease is preferred.

This is because the above-mentioned grease has a physical property such that it has a grease-like hardness at room temperature and does not soften even at high temperatures, so that the filler itself does not apply internal pressure to the coating layer.

To inject the filler into the eastward gap of the strands, use a device that applies the filler thickly to each individual strand bundle, then collects the strands and squeezes out the excess filler inside for sealing. Alternatively, a filler may be injected into the center of the wire bundle before it is focused, and then a device that operates to focus the wire bundle and squeeze out the excess filler inside the core. conduct. The excess filler squeezed out is removed after passing through forming equipment such as a forming die or a group of forming rollers. For example, if the wire bundle is bound with a binding material such as tape, the outer periphery of the wire bundle and the binding material are separated. The voids are also filled with the filler material, which is favorable for rust prevention.

Next, we adopted a configuration in which a filament shape-retaining material was placed on the outer periphery of the strand bundle between the outer periphery of the strand bundle and the covering material.
Whether it is because it is necessary to have an external shape adapted to the purpose of use of the cable, or because the desired external shape cannot be obtained with only the binding material, the present invention does not require twisting at a predetermined pitch. The wire bundle is attached so as to follow the twist of the bundle of wires.

Specifically, a plurality of spacers similar to the wire bundle are provided around the outer periphery of the wire bundle in a desired shape, and the outer periphery of the spacers is bundled together with the wire bundle using a binding material. Further, it is preferable that the spacer is made of a material (synthetic fiber such as polypropylene) that is moderately easily deformed when passing through a molding die or a molding roller.

Furthermore, in terms of cable length management, the present invention is as follows.

If the cable has a configuration in which bundles of wires are bundled in parallel, it is better to measure and cut each bundle of wires along a straight cut line and bundle them, or twist the bundles of wires at a predetermined pitch. In a cable that is bundled together, the lengths of the east sides of the strands are different, so determining the length of the cable by the length of the east sides of the strands will result in extremely insufficient length measurement accuracy.

Therefore, in the cable of the present invention, the core wires of the strand bundle are selected and marked with a length corresponding to the entire length of the cable before being bundled.

Furthermore, transfer markings are applied to the outer periphery of the wire bundle to serve as a guide for the length of the cable. After cutting the wire bundle based on this guideline, the cable length is managed by measuring the markings on the core wires.

In addition, if a spacer, binding material, or covering material is placed around the outer periphery of the wire bundle, transfer the markings again, cut the wire bundle based on the cable guide, and then measure the markings on the core wire. The cable length is managed by

As another length measuring means, if magnetic force is used to mark the core wire of the wire bundle, it can be detected from outside the wire bundle and transferred.

(Embodiments) Hereinafter, embodiments of the long pitch cable according to the present invention will be described in detail with reference to FIGS. 1 to 13.

The cable in the perspective cross-sectional view of FIG. 1 consists of a plurality of strands 1, which are made by twisting several side wires around a core wire made of fiber or steel, and are bundled in parallel in the axial direction. A wire bundle I00 is constructed by enclosing and filling non-drip point grease 4 as a filler for rust prevention, and a spacer 70 (chloroprene rubber, polypropylene resin, Epoquine resin) that is a shape-retaining material so that the entire cross section is circular. It has a structure in which a banding material (tape) 5 is arranged, and the outer periphery is covered with a covering material 6 made of thermoplastic resin such as polyethylene.

In addition, the above-mentioned non-drip point grease 4 is made of non-drip grease and has a dropping point;
No-drop point (JIS K2220), consistency (hardness) +
Drop-free ζ of 00/+000 (JIS K2220)
Grease is used.

The reason why the cross-sectional shape of the above-mentioned cable is circular is based on an experimental result that when the outer shape is circular, there is less vibration than a cable with a hexagonal cross-section, possibly due to the influence of wind.

The structure of the cable of the present invention is as described above, and the manufacturing method thereof is as follows.

FIG. 2 is a schematic perspective view of the apparatus for manufacturing the cable of this embodiment, in which each strand l of a strand bundle 100 consisting of a plurality of strands 1 and the shape-retaining material 70 are arranged on several array plates 1) to 1). 15, the wires are passed through the twisting machine 3, and their tips or free ends are shown.

The length corresponding to the cable is previously marked on the strand l, which is located at the center of the strand bundle 100 and becomes the core wire.

For marking here, either a paint marking method is adopted, or in addition to this marking method, there is a method that changes only the position of the cross section of the core wire and detects it with magnetic force, or a method that detects this with magnetic force. The same effect can be achieved even if a means for detecting magnetic force is adopted.

Each array plate 1)-15 is rotatably supported by an array plate pedestal, which will be described later, and is provided with a control means 19 for controlling the rotation of this rotator and the twisting rotating plate in the twisting machine 3.

In this embodiment, only five sets of array plates are used, or the number may be arbitrarily selected depending on the length of the strands I.

As shown in FIGS. 3 to 5, the array plate 1) is a circular plate having a large number of through holes, and a strand 1 is inserted into each through hole. , the array plate holder with wheels 26 is the grooved array plate holder provided on the stand 21 and the roller 2 is
7 is rotatably supported at the outer periphery.

In the case of the above-mentioned arrangement plate support, the stand 21 is equipped with a gate-shaped frame and four circumferential supports provided thereon with rollers 27, and one side 28 of the gate-shaped frame or the fifth By opening it as shown by the imaginary line in the figure, the strand bundle 100 is inserted into the portal frame from the side.

When one side portion 28 is closed, it is fixed by a hook 30 that rotates around the bottle 30a.

That is, the array plate holder is configured such that the base 21 can move in a direction perpendicular to the length direction of the strand bundle and can be switched between a state in which the array plate 1) is supported and a state in which support is released.

The arrangement plate support stand 21 may run on the rails 200, or may be movable in any direction on a plane.

When running on the rails 200, a rail extending laterally may be provided at an appropriate position (not shown), and the vehicle may be moved laterally at that position.

In addition, other arrangement plate supports shown in Fig. 2 are bases 22, 23, 24.
．． The array receiver 25 is also constructed in the same manner as the base 21.

As shown in FIG. 3, the wire twisting machine 3 includes a roller 2 and a wire bundle 100 that rotatably supports a group 20 of a plurality of arrangement plates.
A twisting rotation section 40 has a twisting rotation plate that rotates by inserting each of the strands in a predetermined arrangement, and the twisting rotation section 40 twists the twisted wire bundle 100 from the outer peripheral part into a predetermined cable shape. Molding section 5 having a molding roller that presses and molds
0, and a traveling carriage 31 installed with a tape winding means 60 for spirally winding the tape 5 around the outer periphery of the twisted cable 10.

A plurality of groups 20 of the receivers are placed on the roller 2 so as to be stacked one on top of the other, as shown by the imaginary lines, and each array plate is placed movably in the length direction of the strand bundle.

Further, a traveling motor 37 for driving the wheels 32 of the traveling trolley 31 is installed on the traveling trolley 31, and a twisting rotation motor 34 for twisting and rotating, which will be described later, and a motor 36 for winding the cable with tape. is set up.

Further, on one side of the traveling carriage 31, a fixed stand 7 for holding the rear end of the cable IO is arranged.

The twisting rotation section 40 is constructed as shown in FIGS. 6 and 7. That is, a roller 42 is attached to the support frame 39 provided on the traveling carriage 31, and the roller 42 rotatably supports an annular rotating disk 43 on its outer periphery. 43 and an annular connecting member 44
An annular sprocket 45 is attached to the sprocket 45, and a twisting rotary plate 46 through which each strand l is inserted is fixed to the sprocket 45, similar to the arrangement plate described above.

The sprocket 45 has a chain 4 between it and a sprocket 49 attached to the rotating shaft 35 of the motor 34.
8 is stretched, and the rotational force is transmitted.

It is also possible to use two rotary plates of the same shape arranged at a distance from each other as the twisting rotary plate 46, and apply a rust preventive agent such as grease between them. Here's a bundle of strands of wire 1
After applying or spraying a thick layer of anti-corrosion filler (grease, polyurethane, silicone, wax) 4 onto the individual wires l into the internal voids of 00, the bundle of wires 100 is collected and the excess filler inside is squeezed out. Immediately before converging the individual strands, the filler is encapsulated in the core wire located near the center of the strand bundle +00, and then the core wire is converged into the strand bundle 100 and the excess filler inside is squeezed out. It is also possible to encapsulate it.

As shown in FIGS. 8 and 9, the molding section 50 has a support frame 5 provided on the traveling carriage 31, and a roller 52 is attached to the support frame 5, which is connected to an annular rotating plate by the roller 52. 53
An annular sprocket 55 is attached to this rotary disk by an annular connecting member 54, and the sprocket 55 has an annular sprocket 55 in the circumferential direction.
Two arms 56 are attached, and a forming roller 57 facing toward the center is rotatably attached to the tip of each arm 56.

Each of the arms 56 is rotatably attached to its base around a shaft 56a, and is configured to move backward as shown in the imaginary line by actuating means (not shown) so that the strand 1 is not pressed by the forming roller 57. There is.

The forming roller 57 is pressed against the outer periphery of the wire bundle 100 to which the spacer 70 is attached, thereby forming it into a predetermined cable shape.

The sprocket 55 also has the rotating shaft 3 of the motor 34.
A chain 58 is stretched between the chain 58 and a sprocket 59 attached to the sprocket 5, so that rotational force is transmitted.

As shown in FIG. 1O and FIG. An annular sprocket 65 is attached to the rotating disk by an annular connecting member 64, and the sprocket 65 has four guides in the circumferential direction. A pin 66 and a holding shaft 67 around which the tape 5 is wrapped are attached.

Further, a chain 68 is connected to the sprocket 65 and a sprocket 69 attached to the rotating shaft of the motor 36.
is suspended and configured to transmit rotational force.

This is to prevent the tape 5 fed out from the holding shaft 67 due to the rotation of the sprocket 65 from passing through the guide pin 66 and causing the cable lO to come loose.

The apparatus used to manufacture the long pitch cable of the present invention has the above-mentioned configuration, but the actual case of manufacturing the cable will be explained as follows.

First, as shown in FIG. 12A, a plurality of overlapping array plates (array plate group 20) is placed on a traveling carriage 31, while a bundle of strands 100 is arranged in a straight line, or Place it in a U-turn.

Then, as shown in FIG. B, the traveling carriage 31 is moved to insert each strand l into each array plate group 2o. Since the insertion holes of each array plate are continuous, this operation can be performed more easily than when the array plates are arranged independently of each other.

Further, the forming roller 57 is moved backward as shown by the imaginary line in FIG. 8, so that the bundle of strands 100 passes through the twisting machine 3 in a parallel state.

Next, as shown in FIG.
) are sequentially moved in the length direction of the strand bundle 100 and arranged at predetermined intervals.

As mentioned above, this operation is performed on the base 25.24.23 of the array plate holder.
．． 22.21 are sequentially moved from the side to a position close to the traveling trolley 3I, and one array plate at the end of the array plate group 20 is moved in the axial direction on the roller 2, and each array plate holder is The support on the stand is done by transferring it onto a roller.

As a result, each array plate is arranged at a predetermined interval with the element M1 inserted therethrough, and each array plate holder is rotatably supported by the stand.

Note that the tip ends of the straight wire bundle 100 shown in FIG. 12 are arranged at predetermined intervals.

Next, when the twisting rotary plate 46 on the traveling trolley 3I is rotated while the rotation of the array plate at the leading edge is regulated, the strand bundle +00 is at the rear end or free end. 10
Each of the strands 0 is twisted at a predetermined pitch in the strand bundle 100 without being twisted.

This torsional force is applied to the rotatably supported array plate 1). 1
2.13.14, and as they rotate, the bundle of strands 100 becomes twisted between each arrangement plate, as shown in the 12th diagram.

In this case, the rotational force of the array plate is due to the strand bundle 100, or
It goes without saying that the binding may be actively applied by the binding means I9 shown in FIG. Next, while moving the wire twisting machine 3 forward, the forming roller 57 is moved toward the center to press the wire bundle I00 from the outer periphery to form it into a predetermined cross-sectional shape. Additionally, tape 5 is wrapped around the outer periphery of the cable IO, which was formed at the same time, as shown in Figures 1O and 1), and the end of the cable IO is attached to the anchor base 7 as shown in Figure 12E. Fix it.

In this state, the twisting machine 3 is advanced, and the twisting rotary plate 46 is rotated so as to follow the twist of the wire bundle 100 which has been given a predetermined twist, and the outer circumference of the formed cable 10 is Wrap the tape 5 in a spiral manner.

As the wire twisting machine 3 moves forward, when its front end approaches the array plate II, the opening/closing frame 28 is opened and the array plate holder moves the stand 21 back to the side of the wire bundle 100, as shown in FIG. Board 1
) The receiver of the wire twisting machine 3 is placed on the rollers.

Thereafter, similarly, the arrangement plates 12, 13, 14, 15 are sequentially transferred onto the rollers, and the twisting machine 3 is advanced to form the cable 10 and wrap the tape 5.

On the other hand, as shown in FIG.
Try to receive it on 1.

When the bundle of strands 100 is arranged in a straight line, the cable 10 is formed as the wire twisting machine 3 moves forward, and all the array plates and the receivers of the twisting machine 3 are collected on the rollers 2. Ru.

In addition, when the wire bundle 100 is arranged in a U-turn, the twisting machine 3 is made a U-turn as shown in the 13th [NA], and the cable IO is attached to the anchor base 7 immediately after the twisting machine 3. The arrangement plates 15.14.13.12. are fixed again and the wire bundles 100 are inserted through them as shown in FIG. 13B.
1), the bones are sequentially moved from the roller 2 in the length direction of the wire bundle 100 and arranged at predetermined intervals.

As mentioned above, this operation is performed on the base 25.24.23 of the array plate holder.
．． 22 and 21 are sequentially moved from the side to a position close to the traveling carriage 31, and one end of the arrangement plate group 20 is arranged by moving it onto a roller. As a result, each array plate is rotatably supported at a predetermined interval with the strands l being inserted therethrough.

Next, when the array plate (reference numeral 15) at the leading edge is rotated manually or by the control means 19 shown in FIG.
Since the tip portion 1b of the strand 10 is a free end, the strand bundle 100 is twisted at a predetermined pitch without twisting the strands 1.

This torsional force is caused by the rotatably supported array plate II,1
2.13.14, and by rotating them, the same twist is imparted to the strand bundle 100 between each arrangement plate, as shown in FIG. 13C.

Then, as described above, by rotating the twisting rotating plate 46, forming by the forming roller 57, and wrapping the tape 5, forming of the cable 10 is completed as shown in Figure 13.

In addition, in the above embodiment, an example was shown in which the wire bundle 100 is given a predetermined twist by rotating a plurality of arrangement plates, and then the wire twisting machine 3 is moved forward to perform shaping. 1
9 applies a predetermined rotational force to each arrangement plate, and the above-mentioned wire twisting machine 3
The molding may be carried out by advancing the .

Furthermore, with the wire twisting machine 3 fixed, a suitable winding tram may be used instead of the anchor stand 7 to move each arrangement plate toward the twisting machine 3 while winding the formed cable 10. The same effect can be obtained by forming the cable 10 by using a method of forming the cable 10.The cable 10 may then be covered with a covering material (for example, polyethylene), and its cross-sectional shape is as shown in the above-mentioned figure.

When the spacer 70, the binding material 5, and the sheathing material 6 are attached to the outer periphery of the wire bundle 100, the cable 10 has a wire bundle +00
After cutting the wick! After cutting the strand bundle 100 using the marking N1 transferred by measuring the marking M of the core wire IA, the cable length is managed by measuring the marking M of the core wire IA.

The cable length is managed by applying transfer markings at the positions shown in FIG. 1, estimating and confirming the proper marking positions of the core wires, and finally cutting the wire bundle.

Here, the core wire IA is the length measuring tape 5A of the measuring table.
After applying a cable measurement required marking M at a predetermined position along the line, set the cable at the center of the array plate 1).

As shown in FIG. 14, just before the roller 57 where the scattered wires are twisted and brought together, there is still a gap between the bundles of wires, so the marking M of the core wire IA can be seen from the outside. A transfer marking is made on the outer periphery of the bundle of converged strands 100 at a predetermined distance from the marking of the core wire IA.

(Effects of the Invention) According to the tensile material of the present invention, the voids inside the wire bundle have a consistency of 10
0 to 600 non-dripping filler is filled and sealed, and the excess filler is squeezed out just before convergence, so there are no remaining voids inside the wire bundle, and rust-causing substances that are present in conventional cables are eliminated. There was almost no intrusion, and rust prevention was sufficient.

Furthermore, since a spacer as a shape-retaining material is provided between the outer periphery of the wire bundle and the covering material, an external shape corresponding to the intended use of the cable can be obtained. Furthermore, the present invention has effects such as making it possible to accurately and easily manage the length of this type of long pitch cable, making it an industrially useful invention.

[Brief explanation of drawings]

Fig. 1 is a perspective sectional view showing a long pitch cable according to an embodiment of the present invention, Fig. 2 is a schematic perspective view showing an implementation device for forming the long pitch cable of the invention, and Fig. 3 is a forming process thereof. Figure 4 is a front view of the device shown in Figure 3, and Figure 5 is a right side view of Figure 4, and Figure 6 is a front view of the stand.
The figure is a front view of the twisting rotation part in Figure 2, Figure 7 is a schematic right side view of Figure 6, Figure 8 is a front view of the forming part in Figure 3, and Figure 9 is a schematic right side view of Figure 8. Top view, Figure 1O is a front view of the tape winding part in Figure 3, Figure 1) is a schematic right side view of Figure 10, Figures 12A to F and Figures 13A to 13 are forming by the above device FIG. 14 is a schematic explanatory diagram showing the process, FIG. 14 is a schematic explanatory diagram showing the state before the strands are bundled, and FIG. 15 is a front view showing a cable-stayed bridge as an application example of the long pitch cable of the present invention. The names of the codes are as follows. ■ Strand wire, 2.27.42.52.62 The receiver is a roller,
3- wire twisting machine, 4- antirust filler, 5 binding material (tape),
6 Covering material, 7-Anchor base, 10 Cable, II, 1
2, I3.14, I5 Array plate, 20-Array plate group, 21
．． 22.23.24.25 - Temporary arrangement support is a stand, 28 - Opening/closing frame, 31 - Running cart, 40 Twisting rotating section, 46 - Twisting rotating plate, 50 - Forming section, 57 - Forming roller, 60 - Tape winding Part, 70-shape retaining material (spacer), 100 strand bundle,

Claims (3)

[Claims] (1) A long-pitch cable in which each of the wires constituting the wire bundle is inserted into each insertion hole of a plurality of array plates, and then the array plates are rotated to twist the wire bundle at a predetermined pitch. Then, while the strands pass through the array plate and are bundled by a forming device such as a forming die or a group of forming rollers, the excess filling amount that is squeezed out when the strands are bundled and formed by the forming device is contained in the gap within the strand bundle. The long product is characterized in that a non-dripable filler containing the filler is enclosed, and then the surplus of the filler is squeezed out using the molding device, or the long product is bundled after being squeezed out, and its outer periphery is covered with a coating material. pitch cable. (2) The long pitch cable according to claim 1, wherein a shape retaining material is provided between the outer periphery of the wire bundle and the covering material and on the outer periphery of the wire bundle. (3) The long pitch cable according to claim 1 or 2, wherein the core wire of the wire bundle is marked to indicate the cable length, and the marking is transferred to the outer periphery of the wire bundle.