JP2023137322A - Trolley wire manufacturing method and manufacturing apparatus - Google Patents

Abstract

To provide a trolley wire manufacturing method and manufacturing apparatus capable of enhancing the alignment property and quality of a trolley wire in the state of being wound around a winding drum.SOLUTION: A trolley wire 11 is manufactured by a wire storage winding step of drawing a rough drawing wire 10 to produce a trolley wire 11 and winding the trolley wire 11 around a wire storage machine 5 continuously from a starting end 111 to a terminal 112 and a drum winding step of delivering the trolley wire 11 out of the wire storage machine 5, after completing the wire storage winding step, to be wound around a winding drum 12. A manufacturing apparatus 1 of the trolley wire 11 has first to fifth wire drawing machines 31 to 35 that draw the rough drawing wire 10 to produce, a wire storage machine 5 that winds the trolley wire 11 from the starting end 111 to the terminal 112, and a drum winding machine 6 that winds the trolley wire 11 delivered out of the wire storage machine 5 around the winding drum 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method and apparatus for manufacturing a contact wire.

Conventionally, in the overhead contact line system, which is one of the current collection methods for railway vehicles, a pantograph of a railway vehicle comes into contact with a contact wire installed along a track. The contact wire has a pair of grooves called ear grooves in which the hanging fittings are locked, as shown in Patent Document 1, for example. Further, as shown in Patent Document 2, for example, the contact wire is shipped by being wound around a winding drum having a cylindrical body and a disk-shaped collar plate at both ends. It is pulled out and connected to an overhead power line.

An example of a method for manufacturing a contact wire is described in Patent Document 3. This manufacturing method consists of a wire drawing process in which a wire drawing process is applied to a rough drawn wire to produce a drawn wire material, a grooving process in which grooves are formed in the drawn wire material to produce a grooved contact wire, and a grooved contact wire is wound. It is characterized in that the winding process of winding it onto a take-up drum is performed continuously. In the wire drawing process and the grooving process, the rough drawn wire fed out from the supply device passes through a wire drawing die, a peeling device, and a grooving device to produce a grooved contact wire.

JP 2021-59248 Publication JP 2021-8350 Publication Japanese Patent Application Publication No. 2010-201478

In a manufacturing method such as that described in Patent Document 3, in which production and winding of a contact wire are performed continuously, there is a possibility that the alignment of the contact wire wound on a winding drum is not necessarily sufficient. be. In addition, even if external scratches or stains are found on the contact wire while it is being wound onto a winding drum, whether the scratches or stains are of a degree that will affect the quality of the contact wire? It was not possible to confirm in detail whether this was the case.

The present invention was devised in view of these circumstances, and its purpose is to manufacture a contact wire that can improve alignment and quality of the contact wire when wound on a winding drum. The object of the present invention is to provide a method and a manufacturing apparatus.

In order to solve the above-mentioned problems, the present invention is a wire storage winder in which a contact wire is produced by stretching a rough drawing wire, and the contact wire is continuously wound on a wire storage machine from a starting end to a terminal end. and a drum winding step of unwinding the trolley wire from the wire storage machine and winding it onto a winding drum after completion of the storage wire winding step.

Moreover, for the purpose of solving the above-mentioned problems, the present invention provides a wire drawing machine that produces a contact wire by stretching a rough drawing wire, a wire storage machine that winds the contact wire from a starting end to a terminal end, A drum winding machine that winds up the trolley wire unwound from the wire storage machine onto a winding drum is provided.

According to the method and apparatus for manufacturing a contact wire according to the present invention, it is possible to improve alignment and quality of the contact wire in a state where it is wound around a winding drum.

1 is a schematic diagram showing a contact wire manufacturing apparatus according to an embodiment of the present invention. (a) is an external view showing a part of the contact wire. (b) is a sectional view taken along line AA in (a). It is an explanatory view seen from above of the manufacturing device which is performing a stored wire winding process. FIG. 2 is an explanatory diagram of the manufacturing apparatus viewed from above when performing an irregular portion removal process. FIG. 2 is an explanatory diagram of the manufacturing apparatus seen from above while performing a drum winding process.

[Embodiment]
FIG. 1 is a schematic diagram showing a configuration example of a contact wire manufacturing apparatus according to an embodiment of the present invention. This manufacturing device 1 is for manufacturing a contact wire 11 from a rough wire 10 and winding it around a winding drum 12 for shipping, and includes a rough wire feeding machine 2 for feeding out a rough wire 10 wound into a coil shape. The first to fifth wire drawing machines 31 to 35, the wire storage machine 5 that stores the contact wires 11 produced by the first to fifth wire drawing machines 31 to 35, and the wire storage machine 5 that is fed out from the wire storage machine 5. A drum winding machine 6 for winding up the trolley wire 11 onto a winding drum 12 is provided.

The rough drawing wire feeder 2 feeds out a rough drawing wire 10 produced by casting and hot rolling a molten metal of pure copper or copper alloy from a coil 21 at a constant speed. The first to fifth wire drawing machines 31 to 35 have dies 311, 321, 331, 341, 351 and capstans 41, 42, 43, 44, 45, respectively. , 341, 351 gradually become smaller toward the downstream side. The rough drawn wire 10 is drawn by sequentially passing through the dies 311, 321, 331, 341, 351 of the first to fifth wire drawing machines 31 to 35, and is gradually drawn to reduce its outer diameter. , the linear velocity transferred by the capstans 41 to 45 increases.

The wire storage machine 5 has a cylindrical winding body 51, and continuously rolls the contact wire 11 produced by the first to fifth wire drawing machines 31 to 35 from the starting end to the terminal end ( That is, the wire is wound onto the winding body 51 (without stopping the feeding of the rough wire 10 and the rotation of the capstans 41 to 45). The drum winding machine 6 does not operate until the wire storage machine 5 winds up the terminal end of the contact wire 11, and after the wire storage machine 5 winds up the terminal end of the contact wire 11, the drum winder 6 is unwound from the wire storage machine 5. The contact wire 11 is wound onto a winding drum 12. That is, the method for manufacturing the contact wire 11 using the manufacturing apparatus 1 according to the present embodiment is to fabricate the contact wire 11 by stretching the rough drawn wire 10, and to continuously stretch the contact wire 11 from the starting end to the terminal end. It has a storage wire winding process in which the wire storage machine 5 winds the wire, and a drum winding process in which the trolley wire 11 is let out from the wire storage machine 5 and wound on the winding drum 12 after the storage wire winding process is completed. .

FIG. 2(a) is an external view showing a part of the contact wire 11. FIG. FIG. 2(b) is a cross-sectional view taken along the line AA in FIG. 2(a). The contact wire 11 that has passed through the first to fifth wire drawing machines 31 to 35 has a setup section 11a, a speed increase section 11b, and a constant speed section 11c. The setup portion 11a is a portion in which the end portion of the rough wire 10 is rolled into a long and thin shape in advance, and includes a starting end portion 111 of the contact wire 11. The outer diameter of the setup portion 11a is smaller than the inner diameter of the die 351 of the fifth wire drawing machine 35, which is the last stage of the first to fifth wire drawing machines 31 to 35.

At the start of the stored wire winding process, the setup section 11a of the contact wire 11 is inserted through the dies 311, 321, 331, 341, 351 of the first to fifth wire drawing machines 31 to 35, and the starting end 111 is inserted into the stored wire. It is fixed to the winding body 51 of the machine 5. Thereafter, the contact wire 11 is continuously stretched by rotating the capstans 41 to 45 and the winding body 51. In the speed increasing section 11b, in the process of gradually increasing the rotational speed of the capstans 41 to 45 and the winding body 51, the rough wire 10 is connected to the dies 311, 321, 331 of the first to fifth wire drawing machines 31 to 35, This is the part that passes through 341 and 351. In the constant speed section 11c, the rough wire 10 is connected to the dies 311, 321, 331, and This is the part that passes through 341 and 351.

FIG. 2(b) shows a cross section of the contact wire 11 in the constant speed section 11c. The contact wire 11 has a substantially circular cross-sectional shape, and ear grooves 110 are formed at two locations on the outer circumferential surface of the contact wire 11 for locking the contact wire 11 with hanging fittings. The two ear grooves 110 are formed in the process in which the rough wire 10 fed out from the rough wire drawing machine 2 passes through the dies 331, 341, 351 of the first to fifth wire drawing machines 31 to 35. The contact wire 11 is suspended from a suspension wire arranged along a railroad track via a hanger and a pair of ear fittings. The ear fittings lock a pair of ear grooves 110 of the contact wire 11. A pantograph of a railway vehicle comes into contact with the large arc surface 11f of the contact wire 11.

A part of the contact wire 11 in the longitudinal direction including the starting end 111 is an irregular portion 11d. This irregular portion 11d is a portion of the contact wire 11 shown in FIG. 2(b) that is not formed in the regular shape, and includes the entire setup portion 11a and at least a portion of the speed increasing portion 11b. The irregular portion 11d is an unnecessary portion that is not connected to the overhead power line, and is a portion that is removed by an operator after the entire contact wire 11 is stored in the wire storage machine 5. That is, in the method for manufacturing the contact wire 11 according to the present embodiment, after the storage wire winding step is completed and before the drum winding step is performed, the irregular portion 11d of the contact wire 11 including the starting end portion 111 is removed. In the drum winding process, the main body portion 11e of the contact wire 11 from which the irregular portion 11d has been removed is wound onto the winding drum 12.

FIG. 3 is an explanatory diagram of the manufacturing apparatus 1 seen from above while performing the stored wire winding process. FIG. 4 is an explanatory diagram of the manufacturing apparatus 1 seen from above when performing the irregular portion removal process. FIG. 5 is an explanatory diagram of the manufacturing apparatus 1 seen from above while performing the drum winding process.

The wire storage machine 5 includes a winding body 51, a rotation drive mechanism 52 that rotates the winding body 51, and a moving mechanism 53 that moves the winding body 51 in the rotation axis direction. The winding body 51 rotates around a rotation axis _O1 perpendicular to the direction in which the first to fifth wire drawing machines 31 to 35 are lined up, and winds up the contact wire. The rotation drive mechanism 52 includes a support section 521 that rotatably supports the winding body 51 and a rotation drive section 522 that rotates the winding body 51. The rotation drive unit 522 includes, for example, a servo motor and a speed reducer that can perform speed control and position control. 3 to 5, the winding body 51 is shown in cross section along the rotation axis _O1 .

The moving mechanism 53 includes a slide table 531, a pair of guide rails 532 that guide the slide table 531 in parallel to the rotation axis _O1 , and a movement drive section 533 that moves the slide table 531 forward and backward. A support section 521 and a rotation drive section 522 of a rotation drive mechanism 52 are mounted on the slide table 531, and the winding body 51 rotates above the slide table 531. For example, the movement drive unit 533 moves the slide table 531 forward and backward by rotating a ball screw 533a using a servo motor. However, the configuration of the movement drive unit 533 is not limited to this, and the slide table 531 may be moved forward and backward by rotating a pinion gear meshed with a rack rail laid parallel to the guide rail 532, for example.

In the stored wire winding step, the winding body 51 is moved by the moving mechanism 53 in the rotational axis direction along the rotation axis O ₁ and rotated by the rotary drive mechanism 52, so that the contact wire 11 is moved in the radial direction of the winding body 51. The contact wire 11 is wound in a single layer around the outer periphery of the winding body 51 so as not to overlap. More specifically, while the rotational drive mechanism 52 rotates the winding body 51 once, the moving mechanism 53 moves the slide table 531 by a distance equal to or longer than the diameter of the contact wire 11, so that the trolley wire is attached to the winding body 51. 11 horizontally in a spiral shape.

As shown in FIG. 4, when the contact wire 11 is wound up to the terminal end 112 on the winding body 51 and the stored wire winding process is completed, an operator performs an irregular portion removal process on the contact wire 11. Specifically, an operator pulls out a part of the contact wire 11 including the irregular portion 11d from the winding body 51, and cuts and removes the irregular portion 11d with the cutting tool 7. The tip of the main body portion 11e of the contact wire 11 excluding the removed irregular portion 11d is fixed to the winding drum 12.

The winding drum 12 includes a cylindrical body 121 for winding the main body portion 11e of the contact wire 11, and first and second disc-shaped collar plates extending radially outward from both ends of the body 121. 122, 123. 3 to 5, the winding drum 12 is shown in section along the axis of rotation _O2 . The rotation axis O ₂ of the winding drum 12 is parallel to the rotation axis O ₁ of the winding body 51 . The outer diameter of the winding body 51 is, for example, 3 m or more, and is larger than the outer diameter of the body 121 of the winding drum 12. In this embodiment, the outer diameter of the winding body 51 is three times or more the outer diameter of the body 121.

The drum winder 6 includes a support section 61 that rotatably supports the winding drum 12 and a rotation drive section 62 that rotates the winding drum 12. The rotation drive unit 62 includes, for example, a servo motor and a speed reducer that can perform speed control and position control. In the drum winding process, the rotational drive unit 62 rotates the winding drum 12 around the rotation axis O ₂ to move the trolley wire 11 wound around the winding body 51 of the wire storage machine 5 onto the winding drum 12. Wind it up. After the drum winding process is completed, the winding drum 12 is removed from the drum winding machine 6 and shipped together with the contact wire 11. The shipped contact wire 11 is pulled out from the winding drum 12 and connected to an overhead power line.

In the drum winding step, the contact wire 11 is wound in multiple layers around the winding drum 12 so that the contact wire 11 overlaps the trunk portion 121 in the radial direction. FIG. 5 shows a state in which the ninth layer of contact wire 11 is wound around the outer periphery of the trunk portion 121. The first layer contact wire 11 is spirally wound horizontally from the first collar plate 122 side toward the second collar plate 123 side so as to be in contact with the outer circumferential surface 121a of the trunk portion 121. The second layer contact wire 11 is spirally wound around the outer periphery of the first layer contact wire 11 from the second collar plate 123 side toward the first collar plate 122 side. Further, the third layer contact wire 11 is spirally wound around the outer periphery of the second layer contact wire 11 from the first collar plate 122 side toward the second collar plate 123 side. In this way, when the N-th layer (N is a natural number) contact wire 11 reaches the end on the first flange plate 122 side or the second flange plate 123 side, the N+1-th layer contact wire 11 changes to the N-th layer. The winding of the contact wire 11 continues as the contact wire 11 rides on the outer periphery of the contact wire 11 and is folded back.

In the drum winding process, while the moving mechanism 53 moves the winding body 51 in the direction of the rotation axis along the rotation axis O ₁ , the winding body 51 is rotated by the rotation drive unit 522 and the winding drum 12 is rotated by the drum winding process. It is rotated by the rotation drive unit 62 of the taker 6. The position of the winding body 51 in the rotation axis direction is adjusted so that the trolley wire 11 between the winding body 51 and the winding drum 12 is perpendicular to the rotation axis O ₁ and the rotation axis O ₂ . Thereby, the multi-layered contact wire 11 of each layer can be spirally wound at a constant angle substantially without gaps, and the alignment of the contact wire 11 on the winding drum 12 can be improved.

In addition, in the drum winding process, when the contact wire 11 reaches the end on the first flange plate 122 side or the second flange plate 123 side and folds back, the rotational speed of the winding body 51 and the winding drum 12 is controlled. Slow down. At this time, the operator may perform assistance work such as pushing the contact wire 11 from the side toward the first flange plate 122 or the second flange plate 123. By reducing the rotational speed of the winding body 51 and the winding drum 12 in the time periods before and after the turn-back of the contact wire 11, the alignment of the contact wire 11 can be improved, especially at the turn-back portion where disturbances in the alignment of the contact wire 11 are likely to occur. Sexual disorder can be suppressed.

Further, in the drum winding process, while the contact wire 11 is being transferred from the winding body 51 to the winding drum 12, the contact wire 11 is inspected for any abnormality in appearance such as scratches or dirt. This visual inspection may be performed, for example, using a flaw detector or by visual inspection by an operator. When an abnormality in appearance is discovered, the rotation of the winding body 51 and the winding drum 12 is stopped, and it is determined in detail whether or not the abnormality in appearance is such as to affect the quality of the contact wire. Verify and if there are no problems, continue the drum winding process. Further, if the abnormality in appearance is a removable flaw, the flaw is removed by processing, and if the abnormality in appearance is removable stain, the stain is removed. This makes it possible to improve the quality of the contact wire 11.

On the other hand, if the detected abnormality in appearance affects the strength and durability of the contact wire 11, the drum winding process is stopped. The contact wire 11 whose drum winding process has been stopped is, for example, melted and used to create the rough wire 10.

As described above, according to the present embodiment, it is possible to improve the alignment and quality of the contact wire 11 when it is wound around the winding drum 12. Note that although FIG. 5 shows a case where the contact wire 11 is wound vertically so that the large arc surface 11f (see FIG. 1) of the contact wire 11 is in contact with the outer peripheral surface 121a of the body portion 121 of the winding drum 12, However, the present invention is not limited to this, and the contact wire 11 may be wound horizontally so that the large arc surface 11f faces the first flange plate 122 or the second flange plate 123.

(Summary of embodiments)
Next, technical ideas understood from the embodiments described above will be described using reference numerals and the like in the embodiments. However, each reference numeral in the following description does not limit the constituent elements in the scope of the claims to those specifically shown in the embodiments.

[1] A contact wire (11) is produced by stretching the rough drawing wire (10), and the contact wire (11) is continuously passed through a wire storage machine (5) from the starting end (111) to the terminal end (112). a drum winding step of unwinding the trolley wire (11) from the wire storage machine (5) and winding it onto a winding drum (12) after the completion of the storage wire winding step; A method for manufacturing a contact wire, comprising:

[2] After the storage wire winding step is completed and before the drum winding step, an irregular portion removing step is included in which the irregular portion (11d) of the contact wire (11) including the starting end (111) is removed. However, in the drum winding step, the trolley wire (11) from which the irregular portion (11d) has been removed is wound onto the winding drum (12).

[3] The wire storage machine (5) includes a winding body (51) that winds up the trolley wire (11), and a rotational drive mechanism (52) that rotates the winding body (51), The winding drum (12) includes a cylindrical body part (121) for winding the trolley wire (11), and first and second body parts projecting outward in the radial direction from both ends of the body part (121). The contact wire according to [1] or [2] above, wherein the trolley wire has a collar plate (122, 123), and the outer diameter of the winding body (51) is larger than the outer diameter of the body (121). Production method.

[4] In the stored wire winding step, the trolley wire (11) is wound in a single layer around the winding body (51) so as not to overlap in the radial direction of the winding body (51), and The method for manufacturing a contact wire according to [3] above, wherein in the step, the contact wire (11) is wound in multiple layers around the winding drum (12) so as to overlap in the radial direction of the body (121).

[5] The wire storage machine (5) further includes a moving mechanism (53) that moves the winding body (51) in the rotation axis direction, and in the storage wire winding step, the winding body (51) The method for manufacturing a contact wire according to [4] above, wherein the contact wire is rotated by the rotary drive mechanism (52) while being moved in the direction of the rotation axis by the moving mechanism (53).

[6] A wire drawing machine (31 to 35) for producing a contact wire (11) by drawing a rough drawing wire (10), and a wire drawing machine (31 to 35) for producing a contact wire (11) from a starting end (111) to a terminal end (112). A trolley wire having a wire storage machine (5) for winding it up, and a drum winding machine (6) for winding the trolley wire (11) unwound from the wire storage machine (5) onto a winding drum (12). Manufacturing equipment (1).

Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. Furthermore, it should be noted that not all combinations of features described in the embodiments are essential for solving the problems of the invention.

1... Contact wire manufacturing device 10... Rough wire 11... Contact wire 111... Starting end portion 112... Terminating end portion 11d... Irregular portion 12... Winding drum 121... Body portion 122... First flange plate 123... Second flange plate 2... Rough wire drawing machine 31-35... First to fifth wire drawing machine 5... Wire storage machine 51... Winding body 52... Rotation drive mechanism 53... Moving mechanism 6... Drum winding machine

Claims (6)

A storage wire winding step of producing a contact wire by stretching a rough drawing wire, and continuously winding the contact wire from a starting end to a terminal end in a wire storage machine;
After completion of the wire storage winding step, a drum winding step of letting out the trolley wire from the wire storage machine and winding it on a winding drum;
A method for manufacturing a contact wire having the following. After the storage wire winding step is completed and before the drum winding step, an irregular portion removing step is performed to remove an irregular portion of the contact wire including the starting end,
In the drum winding step, the trolley wire from which the irregular portion has been removed is wound around the winding drum.
A method for manufacturing a contact wire according to claim 1. The wire storage machine includes a winding body that winds the trolley wire, and a rotational drive mechanism that rotates the winding body,
The winding drum has a cylindrical body for winding the trolley wire, and first and second collar plates extending radially outward from both ends of the body,
The outer diameter of the winding body is larger than the outer diameter of the body.
A method for manufacturing a contact wire according to claim 1 or 2. In the stored wire winding step, the trolley wire is wound in a single layer around the winding body so as not to overlap in the radial direction of the winding body,
In the drum winding step, the trolley wire is wound in multiple layers on the winding drum so as to overlap in the radial direction of the body.
The method for manufacturing a contact wire according to claim 3. The wire storage machine further includes a movement mechanism that moves the winding body in the direction of the rotation axis,
In the stored wire winding step, the winding body is rotated by the rotary drive mechanism while being moved in the direction of the rotation axis by the moving mechanism.
The method for manufacturing a contact wire according to claim 4. A wire drawing machine that produces contact wire by stretching rough wire;
a wire storage machine that winds the contact wire from a starting end to a terminal end;
a drum winding machine that winds the trolley wire unreeled from the wire storage machine onto a winding drum;
A contact wire manufacturing device having the following.

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