JP7167867B2 - Contact wire winding drum - Google Patents

Description

TECHNICAL FIELD The present invention relates to a trolley wire winding drum, and more particularly to a trolley wire winding drum for a wire drawing vehicle.

2. Description of the Related Art Conventionally, there is known a trolley wire winding drum used in a wire drawing vehicle for drawing a trolley wire onto an overhead electric line of a track (for example, see Patent Document 1). A contact wire winding drum on which a contact wire is wound is installed in the wire rolling vehicle, and the contact wire is pulled out from the contact wire winding drum and wired to an overhead electric line.

Generally, after a contact wire is extended to an overhead power line, a work called pre-tensioning (pre-stretching) is performed by applying a strong tension to the contact wire in order to remove distortion and curling of the contact wire. will be

Japanese Patent Application Laid-Open No. 2002-211388

The work of replacing a worn contact wire with a new contact wire is carried out at night when there is no train service. However, the power outage time at night is short, and especially when it takes a long time to move to a work place, such as work in an undersea tunnel, it is required to replace the trolley wire in a short time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a trolley wire winding drum to which a detent device for drawing a trolley wire can be attached while tension is applied. By drawing the trolley wire while applying tension, it is possible to omit the pretensioning work and shorten the work time for trolling the trolley wire.

In order to solve the above-mentioned problems, the present invention is provided with disk-shaped flange plates at both ends of a body portion for winding a contact wire, and a plurality of first bolts passing through the body portion and the flange plates. and a trolley wire winding drum in which the body and the collar plate are coupled by a first nut combined with the first bolt, wherein the plurality of first bolts are arranged on the surface of the collar plate. , the trunk portions are arranged at equal intervals on a circle centered on the center of the collar plate, and are located at equal distances from the two adjacent first bolts on the surface of the collar plate. and two holes passing through the collar plate, and the two holes are arranged on the surface of the collar plate at symmetrical positions with respect to the center of the collar plate. offer.

According to the present invention, it is possible to provide a trolley wire winding drum to which a detent device for extending the trolley wire while applying tension can be attached. By drawing the trolley wire while applying tension, it is possible to omit the pretensioning work and shorten the work time for trolling the trolley wire.

FIG. 1 is a perspective view of a contact wire winding drum according to an embodiment. FIG. 2 is a front view of a vertical cross-section of the contact wire winding drum. 3(a) and 3(b) are side views of the contact wire winding drum.

[Embodiment]
(Structure of contact wire winding drum)
FIG. 1 is a perspective view of a contact wire winding drum 1 according to an embodiment. FIG. 2 is a front view of a cross section of the trolley wire winding drum 1 cut in the vertical direction. 3A and 3B are side views of the contact wire winding drum 1. FIG. 1, 2, and 3(a) show a state in which a rotation-preventing device 2, which will be described later, is mounted, and FIG. 3(b) shows a state before the rotation-preventing device 2 is mounted.

The contact wire winding drum 1 includes a body portion 10 for winding the contact wire and disk-shaped collar plates 11 a and 11 b provided at both ends of the body portion 10 . The outer diameter of the collar plates 11a and 11b is approximately 1350 mm. The barrel portion 10 and the flange plates 11a and 11b are connected by bolts 12 (12a to 12f) passing through the barrel portion 10 and the flange plates 11a and 11b and nuts 15 combined with the bolts 12 (12a to 12f).

The contact wire winding drum 1 is, for example, a wooden contact wire winding drum in which the body 10 and the flange plates 11a and 11b are made of wood. The number of bolts 12 is four or more, typically six. Further, for example, the bolt 12 has a threaded portion with a diameter of 16 mm and a neck length of 780 mm.

The barrel 10 and the flange plates 11a and 11b are fixed by inserting the bolt 12 through the through-holes provided in the barrel 10 and the flange plates 11a and 11b and tightening the nut 15 on the screw portion at the tip of the bolt 12. there is Washers 13 are normally sandwiched between the bearing surface of the bolt 12 and the collar plate 11a and between the nut 15 and the collar plate 11b.

The body portion 10 is typically a cylindrical member, and includes a plurality of cylindrically arranged sun plates 101 forming the side surfaces of the cylinder and a disc-shaped sun receiving plate forming the end surface of the cylinder. 102a and 102b, and a central plate 103 having the same shape as the sun receiving plates 102a and 102b, which is installed between and parallel to the sun receiving plates 102a and 102b, as main constituent members.

The trolley wire winding drum 1 has a plurality of holes 14 penetrating through the body 10 and the flange plates 11a and 11b for allowing bolts 23 for fixing the anti-rotation device 2 to the trolley wire winding drum 1 to pass therethrough. Prepare. In order to prevent rotation of the trolley wire winding drum 1, it is necessary to fix the anti-rotation device 2 at at least two locations. two holes 14a, 14b for passing bolts 23 (23a, 23b). As the bolt 23, for example, a bolt having the same size as the bolt 12 can be used.

The anti-rotation device 2 is a device mounted on the wire rolling vehicle for preventing the rotation of the contact wire winding drum 1 when the contact wire is laid while tension is applied, and is provided at the end thereof. It is fixed to the trolley wire winding drum 1 at a plate-like portion 20 which will be described later. When the anti-rotation device 2 is not attached to the contact wire winding drum 1, there is no problem in normal contact wire drawing work. Since the wire winding drum 1 rotates, tension cannot be applied.

The anti-rotation device 2 has a plate-like portion 20 that makes surface contact with the surface of the flange plate 11 a (the outer surface of the contact wire winding drum 1 ) and a rod-like portion 21 that extends from the plate-like portion 20 . Bolts 23a and 23b are passed through the holes 22 provided in the plate-like portion 20 and the holes 14a and 14b of the contact wire winding drum 1, and nuts 24 are tightened on the screw portions at the ends of the bolts 23a and 23b. A detent device 2 is fixed to the winding drum 1. - 特許庁Washers 25 are normally sandwiched between the bearing surfaces of the bolts 23 a and 23 b and the plate-like portion 20 and between the nut 24 and the plate-like portion 20 .

The bolts 12 (12a to 12f) are arranged on the surfaces of the flange plates 11a and 11b at equal intervals on one circumference C centered on the center of the flange plates 11a and 11b. Bolts 23a and 23b are used to fix the anti-rotation device 2 to the contact wire winding drum 1 with sufficient strength to prevent rotation of the contact wire winding drum 1 when the contact wire is drawn under tension. The holes 14a and 14b through which the holes 14a and 14b pass are positioned symmetrically with respect to the centers of the flange plates 11a and 11b on the surfaces of the flange plates 11a and 11b (the middle point of the line segment connecting the holes 14a and 14b is the flange plate 11a and 14b). 11b), and typically arranged symmetrically with respect to the center of the collar plates 11a and 11b on the circumference C (the center of the circumference C).

Further, in order to avoid interference between the plate-like portion 20 and the bolt 12 when the detent device 2 is attached to the trolley wire winding drum 1, the holes 14a and 14b are formed on the surfaces of the collar plates 11a and 11b, respectively. , the distances from two adjacent bolts 12 are equal. For example, as shown in FIG. 3B, the holes 14a are arranged at positions equidistant from the bolts 12b and 12c, and the holes 14b are arranged at positions equidistant from the bolts 12e and 12f.

Therefore, when the holes 14a and 14b are arranged on the circumference C, each of the holes 14a and 14b is located midway on the circumference C of two adjacent bolts 12 on the surfaces of the collar plates 11a and 11b. placed on a point. For example, as shown in FIG. 3(b), a hole 14a is arranged at an intermediate point on the circumference C between the bolts 12b and 12c, and a hole 14b is arranged at an intermediate point on the circumference C between the bolts 12e and 12f. placed.

The flange plates 11a and 11b are, for example, laminated plates in which a plurality of circular plate members 111 are stacked. Each circular board 111 is composed of a plurality of wooden boards 110 arranged in the plane direction, as shown in FIGS. 3(a) and 3(b). The plurality of stacked plate members 111 are fixed to each other by penetrating a nail in the thickness direction from the inner surface side (body portion 10 side) and bending the tip of the nail. For example, when using two plate members 111, the two plate members 111 are stacked such that the longitudinal directions of the plates 110 constituting each plate are orthogonal to each other. Further, for example, when three plate members 111 are used, the three plate members 111 are stacked such that the longitudinal directions of the plates 110 constituting each plate are shifted by 60°.

In this case, as shown in FIG. 3(b), holes 14a and 14b are formed in different wooden boards 110 among the plurality of wooden boards 110 in the outermost circular board 111 (opposite side of body 10). is preferably provided. As a result, as shown in FIG. 3(a), when the anti-rotation device 2 is attached, a different plate 110 is fixed to the anti-rotation device 2 on the brim plate 11a. It is possible to reduce the risk of the flange plates 11a and 11b decomposing.

Of the circular plate members 111 forming the flange plates 11a and 11b, the plate members 111 other than the outermost plate member 111 are fixed by the outermost plate member 111 and the trunk portion 10 so as to hold down the plurality of plates 110 from both sides. Therefore, the positional relationship with the detent device 2 has little effect on the strength of the collar plates 11a and 11b. That is, the positions of the holes 14a and 14b in the plate members 111 other than the outermost plate have little effect on the strength of the collar plates 11a and 11b.

Further, the trolley wire winding drum 1 may include bolts 23a and 23b passing through the holes 14a and 14b, respectively, and a nut 24 and a washer 25 used together with the bolts 23a and 23b. In this case, bolts 23a and 23b are passed through holes 14a and 14b, and nuts 24 are tightened to the ends thereof, in a state where anti-rotation device 2 is not attached to trolley wire winding drum 1. As shown in FIG. When attaching the anti-rotation device 2, the bolts 23a and 23b are pulled out from the holes 14a and 14b once, passed through the holes 14a and 14b and the hole 22 of the anti-rotation device 2, and then threaded at the tip. Tighten the nut 24.

In such a case, it is preferable that the color of the bolts 23a and 23b is different from the color of the bolts 12 (12a to 12f) connecting the body 10 and the collar plates 11a and 11b. This makes it easy to distinguish between the bolts 23a, 23b and the bolt 12, and prevents the bolt 12 from being erroneously pulled out when the anti-rotation tool 2 is attached.

It is also effective to make the direction of insertion of the bolts 23a, 23b and the direction of insertion of the bolt 12 different in order to facilitate identification of the bolts 23a, 23b and the bolt 12. FIG. For example, as shown in FIGS. 1, 2, and 3(a), the bolt 12 is inserted from the collar plate 11a side, the nut 15 is tightened from the collar plate 11b side, and the bolts 23a and 23b are inserted from the collar plate 11b side. Insert it and tighten the nut 24 on the flange plate 11a side.

When using a conventional contact wire winding drum that does not have holes 14a and 14b for the bolts 23a and 23b to pass through, for example, two of the bolts 12 (12a to 12f) are used instead of the bolts 23a and 23b. In this case, two of the bolts 12 (12a to 12f) are removed with the contact wire wound on the contact wire winding drum. As a result, the fixing strength of the flange plates 11a and 11b to the body portion 10 is reduced to 1/3 or less, which may cause a safety problem during the contact wire wiring work.

(Overhead contact wire)
Specific examples of a conventional general contact wire wiring process and a contact wire wire wiring process using the contact wire winding drum 1 according to the present embodiment will be described below. The contact wire tension is 2t.

In a conventional general contact wire wiring process, first, a tension of about 500 kg is applied to extend the contact wire to an overhead electric line. This wire drawing process takes about 30 minutes. Next, a tension of about 3 tons, which is larger than the tension of the overhead wire, is applied to the contact wire to remove distortion and curling of the contact wire. It takes about 30 minutes for this pre-tensioning work.

In the contact wire wiring process using the contact wire winding drum 1 according to the embodiment, the contact wire is extended to the overhead electric line while a tension of 2 tons, which is equivalent to the tension of the contact wire, is applied to the contact wire. As a result, it is possible to extend the contact wire while removing the distortion and curling of the contact wire, so that the pretensioning work can be omitted. For this reason, it is possible to shorten the overhead contact wire work time by 30 minutes required for the pre-tensioning work and nearly one hour including the time required for preparing for the pre-tensioning work.

(Effect of Embodiment)
A detent device 2 can be attached to the trolley wire winding drum 1 according to the above embodiment. Therefore, by using the trolley wire winding drum 1, the trolley wire can be drawn while the tension is applied when the trolley wire is laid by the wire drawing vehicle. As a result, it is possible to omit the pre-tensioning work and shorten the time required for the trolley wire wiring work.

By shortening the work time for the contact wire, it is possible to replace the contact wire at night when it takes a long time to move to the work place. Moreover, even when a new contact wire is installed, the effect of shortening the work time is great.

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

[1] Collar plates (11a, 11b) are provided at both ends of a body (10) around which a trolley wire is wound, and a plurality of first bolts ( 12) and a first nut (15) combined with a first bolt (12) to connect a body (10) and flange plates (11a, 11b) to a contact wire winding drum (1), , a plurality of first bolts (12) are arranged on the surface of the collar plate (11a, 11b) at equal intervals on one circumference (C) centered on the center of the collar plate (11a, 11b). and, on the surface of the collar plates (11a, 11b), two bolts penetrating the barrel (10) and the collar plates (11a, 11b) at positions equidistant from the two adjacent first bolts (12) Holes (14a, 14b) are provided, and the two holes (14a, 14b) are arranged at mutually symmetrical positions with respect to the center of the flange plates (11a, 11b) on the surface of the flange plates (11a, 11b). and a contact wire winding drum (1).

[2] The contact wire winding drum (1) according to [1] above, wherein two holes (14) are provided on the circumference (C) on the surface of the collar plates (11a, 11b).

[3] The brim plates (11a, 11b) are composed of a laminated plate (111) formed by stacking a plurality of circular plates composed of a plurality of wooden plates (110) arranged in the plane direction, and the outermost circular plate The trolley winding according to [1] or [2] above, wherein in the plate (111), the two holes (14a, 14b) are provided in different ones of the plurality of wooden boards (110). Take-up drum (1).

[4] The contact wire winding drum (1) according to any one of [1] to [3] above, provided with second bolts (23a, 23b) passing through the two holes (14) respectively. ).

[5] The contact wire winding drum according to [4] above, wherein the colors of the first bolt (12) and the second bolt (23a, 23b) are different.

[6] The above [4] or [5], wherein the second bolts (23a, 23b) are bolts for fixing the anti-rotation device (2) to the contact wire winding drum (1). Contact wire winding drum.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention.

Moreover, the embodiments described above do not limit the invention according to the scope of the claims. Also, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

1 Contact wire winding drum 2 Anti-rotation device 10 Body 11a, 11b Collar plate 12 (12a to 12f) First bolt 14 (14a, 14b) Hole 23a, 23b Bolt 110 Plate C Circumference

Claims (4)

Disc-shaped collar plates are provided at both ends of a body for winding a contact wire, a plurality of first bolts penetrating the body and the collar plates, and a first nut combined with the first bolts. A trolley wire winding drum in which the body and the collar plate are coupled by
The plurality of first bolts are arranged on the surface of the collar plate at equal intervals on one circumference centered on the center of the collar plate,
Two holes penetrating the barrel and the collar plate are provided on the surface of the collar plate at positions equidistant from the two adjacent first bolts,
The two holes are arranged on the surface of the collar plate at symmetrical positions with respect to the center of the collar plate ,
A second bolt passing through each of the two holes, and a second nut combined with the second bolt,
wherein the second bolt is a bolt for fixing a detent device to the trolley wire winding drum;
Contact wire winding drum. The two holes are provided on the circumference on the surface of the collar plate,
The contact wire winding drum according to claim 1. The collar plate is made of a laminated plate in which a plurality of circular plate materials composed of a plurality of wooden plates arranged in a plane direction are stacked,
In the outermost circular board, each of the two holes is provided in a different one of the plurality of wooden boards,
The contact wire winding drum according to claim 1 or 2. the colors of the first bolt and the second bolt are different;
The contact wire winding drum according to claim 1 .

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