JP7429004B2 - Mounting parts for tension adjustment device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mounting member for attaching a tension adjustment device to a support column for adjusting the tension of overhead contact lines necessary for supplying electric power to a railway vehicle.

In general, when the tension changes, overhead contact lines have the problem of separating from the pantograph or increasing stress, and to prevent this, it is necessary to construct the line with appropriate tension to maintain contact with the pantograph. be. Furthermore, fluctuations in tension due to expansion and contraction of the overhead contact line due to changes in outside temperature, etc., are thought to be a factor for fluctuations in the tension of the overhead contact line.

As a means of adjusting the tension of the overhead contact line, a tension adjustment device is installed at the holding point of the overhead contact line, and the tension adjustment device maintains the tension of the overhead contact line at an appropriate level. There is. Various forms of such tension adjustment devices are known, and for example, as described in Patent Document 1, tension adjustment devices of a pulley type or a spring type are known.

Japanese Patent Application Publication No. 6-144088

However, while spring-type tension adjustment devices are easier to maintain than pulley-type ones, they have a structure in which heavy objects are placed on top of the columns, so equipment can be damaged due to increased loads on the overhead contact lines and columns during earthquakes. There are concerns. This is thought to be due to the tension adjustment device shaking horizontally due to the earthquake load, resulting in an excessive load being applied to the strut band attached to the strut, leading to equipment damage. A possible reason why such a load is transmitted is that the conventional mounting member uses a substantially triangular plate-like member.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems, and to prevent the load from being transmitted to the support band and prevent damage to the support band when the tension adjustment device is shaken during an earthquake. Another object of the present invention is to provide a mounting member that can further suppress an increase in weight as a countermeasure against fluctuations of a tension adjusting device.

The attachment member according to the present invention includes a rod-shaped first member that is attached to each of a pair of strut bands attached to a strut and is arranged to extend substantially parallel to the strut , and a tension member that is connected to an overhead contact line. a second member attached to the adjustment device, the first member and the second member being rotatably assembled to each other by a rotation shaft extending in a direction intersecting a horizontal direction; The rotation shaft is arranged substantially coaxially with the attachment portion of the strut band.

Further, in the mounting member according to the present invention, it is preferable that the rotation shaft is arranged substantially parallel to the support column and in the vicinity of the support column.

In the mounting member according to the present invention, the strut band has a pair of outer circumferential portions that contact the outer circumference of the strut, and the mounting portion is formed to protrude horizontally from at least one end of the outer circumferential portion. suitable.

According to the present invention, the first member and the second member are rotatably assembled to each other by a rotation shaft extending in a direction intersecting the horizontal direction, and the rotation shaft is substantially coaxial with the mounting portion of the strut band. Because of this arrangement, when the tension adjustment device is shaken due to an earthquake or the like, the load is not transmitted to the support band, thereby preventing damage to the support band and suppressing an increase in weight.

Further, according to the present invention, since the rotation shaft is disposed near the strut, it is possible to minimize the bending moment that occurs in the strut band when the tension adjustment device oscillates.

Further, according to the present invention, since the rotation axis and the suspension rod rotation axis are arranged substantially coaxially, even when the tension adjustment device and the suspension rod are shaken, the tension adjustment device is maintained in a horizontal position. No unnecessary external force is applied to the hanging rod.

Further, according to the present invention, the strut band has a pair of outer circumferential portions in contact with the outer circumference of the strut, and the attachment portion is formed to protrude horizontally from at least one end of the outer circumferential portion. It can be used in common with the support band of

FIG. 3 is a diagram showing an attached state of the attachment member according to the embodiment of the present invention. FIG. 2 is an enlarged view of a mounting member according to an embodiment of the present invention. The figure which shows the modification of the attachment member based on embodiment of this invention. FIG. 2 is an enlarged view of a mounting member according to an embodiment of the present invention.

Hereinafter, preferred embodiments for carrying out the present invention will be described using the drawings. Note that the following embodiments do not limit the inventions claimed in each claim, and not all combinations of features described in the embodiments are essential to the solution of the invention. .

FIG. 1 is a diagram showing an attached state of a mounting member according to an embodiment of the present invention, FIG. 2 is an enlarged view of the mounting member according to an embodiment of the present invention, and FIG. 3 is a diagram showing an attached state of a mounting member according to an embodiment of the present invention. FIG. 4 is a diagram showing a modification of the mounting member according to the embodiment of the present invention, and FIG. 4 is an enlarged view of the mounting member according to the embodiment of the present invention.

As shown in FIG. 1, the tension adjustment device 1 includes an outer cylinder member 2, a central cylinder member (not shown), and an inner cylinder member 3, which are three cylinder members arranged coaxially.

A first coil spring in a compressed state is housed in the radial gap between the outer cylinder member 2 and the central cylinder member. One end of the first coil spring is in contact with an outer flange formed on the central cylindrical member, and the other end of the first coil spring is in contact with an inner flange formed on the outer cylindrical member 2.

A second coil spring in a compressed state is housed in the radial gap between the central cylinder member and the inner cylinder member 3. One end of the second coil spring is in contact with an outer flange formed on the inner cylindrical member 3, and the other end of the second coil spring is in contact with an inner flange formed on the central cylindrical member. Grease, which is a lubricant, is applied or filled in the portions where the first coil spring and the second coil spring come into contact with the cylindrical member so as not to inhibit relative sliding between the two. The lubricant is not limited to grease as long as it has a lubricating function.

A contact wire 10 is attached to the end surface of the inner cylinder member 3 in FIG. 1 via a contact wire attachment member. The overhead contact line may be a railway overhead line, but may also be an overhead power line for other purposes, an overhead line for signal transmission, an overhead line for support, or the like.

Further, the tension adjustment device 1 is supported by the support column 11 by the support portion 6 . That is, the flange portion of the support portion 6 is fixed to a mounting member 20 attached to the support column 11 by a support band 12.

Further, one end of a rod-shaped hanging rod 7 is attached to the upper part of the outer cylinder member 2, and the other end of the hanging rod 7 is fixed to the upper part of the support column 11 by a support band 12 via a mounting member 20.

As shown in FIG. 2, the mounting member 20 according to the present embodiment includes a first member 21 that is attached to the support column and a second member 22 that is attached to the tension adjustment device that is connected to the overhead contact line 10. There is. The first member 21 and the second member 22 are rotatably assembled to each other by a rotation shaft 23 extending in a direction intersecting the horizontal direction (vertical direction in FIG. 1).

The first member 21 is a rod-shaped member extending substantially parallel to the support column 11, and both ends thereof are held and fixed by the support band 12. Note that the rotation axis 23 overlaps the central axis of the first member 21.

The support band 12 includes a pair of outer peripheral parts 15, 15 that are in contact with the outer periphery of the support pillar 11, and attachment parts 14 extending horizontally from both ends of the outer peripheral part 15. The mounting portion 14 has a mounting hole formed substantially in the center, and the mounting hole is arranged on an extension line of the rotation shaft 23 when the first member 21 is attached.

The second member 22 is rotatably attached around the rotation shaft 23 of the first member 21, and has a through hole 27 through which the first member 21 is inserted, and a fixing part fixed to the support part 6. It is equipped with 25.

By configuring the mounting member 20 in this way, the rotation shaft 23 can be arranged approximately parallel to the support column 11 and the rotation shaft 23 can be arranged near the support column 11, so that the tension adjustment device 1 can be Even in the case of shaking, the bending moment generated in the strut band 12 can be minimized to prevent the strut band 12 from being damaged.

Further, in the mounting member according to this embodiment, the hanging rod 7 is also mounted by a mounting member 20 similar to the mounting member 20 attached to the tension adjustment device 1. The rotation axis of the mounting member 20 to which the hanging rod 7 is attached acts as the hanging rod rotation axis 24, so that when the tension adjustment device 1 oscillates, the suspension rod 7 moves as the tension adjustment device 1 oscillates. Since the suspension rod itself can also sway, breakage of the suspension rod 7 can be prevented.

Further, the form of the mounting member 20 is not limited to the above-described form, and may be configured as shown in FIGS. 3 and 4, for example. Specifically, as shown in FIG. 3, the tension adjustment device 1 includes a pivoting portion 13' that is rotatable around a pivoting shaft 23 on the support band 12', and a pivoting portion 13' that is rotatable around a pivoting shaft 23. It is attached by inserting a cotter bolt 26 as a first member into the main body portion 22' as a member. Similarly, the suspension rod 7 is also attached to have a suspension rod rotation axis 24 by a support band 12' having a rotation portion 13'.

In addition, in the embodiment mentioned above, the case where the hanging rod 7 was fixed to the support column 11 was explained, but in a tunnel etc., the hanging rod 7 may be configured to be fixed to the wall surface of the tunnel. It is clear from the claims that such modifications or improvements can be included within the technical scope of the present invention.

1 Tension adjustment device 2 Outer cylindrical member 3 Inner cylindrical member 6 Support part 7 Hanging rod 10 Contact line 11 Strut 12 Strut band 20 Mounting member 21 First member 22 Second member 23 Rotation shaft

Claims (3)

a rod- shaped first member attached to each of a pair of strut bands attached to the struts and arranged to extend substantially parallel to the struts; and a second rod-shaped member attached to a tension adjustment device connected to the overhead contact line. A mounting member having a member,
The first member and the second member are rotatably assembled to each other by a rotation shaft extending in a direction intersecting the horizontal direction,
The mounting member is characterized in that the rotation shaft is arranged substantially coaxially with the mounting portion of the strut band. The mounting member according to claim 1,
The mounting member is characterized in that the rotation shaft is arranged substantially parallel to the support column and in the vicinity of the support column. The mounting member according to claim 1 or 2,
The mounting member is characterized in that the support band has a pair of outer peripheries that contact the outer periphery of the support, and the mounting portion is formed to protrude horizontally from at least one end of the outer periphery.

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