JP2021126972A - Attachment member of tension adjustment device - Google Patents

Abstract

To provide an attachment member which can prevent the breakage of a column band and a suspension rod by preventing a load from being transmitted to the column band and the suspension rod when a tension adjustment device shakes in an earthquake and suppress the weight increase as a measure in a case where the tension adjustment device shakes.SOLUTION: There is provided an attachment member 20 for attaching a tension adjustment device 1 connected to a trolley wire 10 and a suspension rod 7 supporting the tension adjustment device to a column 11. The attachment member comprises: a first member attached to the column; and a second member attached to the tension adjustment device or suspension rod. The first member and the second member are rotatably assembled to each other with a rotation shaft extending in the direction intersecting the horizontal direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mounting member that attaches a tension adjusting device for adjusting the tension of a train line required for supplying electric power to a railroad vehicle to a support column.

Generally, the train line has a problem that it deviates from the pantograph or the stress increases when the tension changes, and in order to prevent this, it is necessary to erection with an appropriate tension to maintain the contact state with the pantograph. be. Further, as a factor of the fluctuation of the tension of the train line, the fluctuation of the tension due to the expansion and contraction of the train line due to the change of the outside air temperature and the like is considered.

As a means for adjusting the tension of the train line, a tension adjusting device is provided at the holding point of the train line, and the tension adjusting device maintains the tension of the train line so as to be appropriate. There is. Various forms of such a tension adjusting device are known, and for example, as described in Patent Document 1, a tension adjusting device of a pulley type or a spring type is known.

Japanese Unexamined Patent Publication No. 6-144088

However, while the spring-type tension adjusting device is superior in maintainability to the pulley type, it has a structure in which a heavy object is placed on the upper part of the support column, so that the equipment is damaged due to an increase in the load applied to the train line and the support column during an earthquake. Is a concern. It is considered that this is because the tension adjusting device sways in the horizontal direction due to the seismic load, and an excessive load is applied to the strut band attached to the strut, which leads to equipment damage. The reason why such a load is transmitted is considered to be that the conventional mounting bracket uses a substantially triangular plate-shaped member.

Further, the tension adjusting device is fixed by a mounting bracket and a hanging rod mounted above the mounting bracket, and in the event of an earthquake, the hanging rod itself may break if a bending load is applied to the hanging rod. There was a problem.

Furthermore, when the tension adjusting device is shaken, only vibration focusing due to damping of overhead wires can be expected, and when the tension adjusting device is shaken significantly due to an earthquake or the like, the shaking of the tension adjusting device can be positively suppressed. There was a problem that it could not be done.

Therefore, an object of the present invention has been made to solve the above-mentioned problems, and when the tension adjusting device is shaken during an earthquake, the strut band and the suspension rod are suspended so that the load is not transmitted to the strut band and the suspension rod. It is an object of the present invention to provide a mounting member capable of preventing damage to the rod, suppressing an increase in weight, and positively suppressing vibration as a countermeasure when the tension adjusting device is shaken.

The mounting member according to the present invention is a mounting member that attaches a tension adjusting device connected to a train line and a suspension rod that supports the tension adjusting device to a support column, and the mounting member is a first mounting member that is attached to the support column. It has a member and a second member attached to the tension adjusting device or the suspension rod, and the first member and the second member rotate with each other by a rotation axis extending in a direction intersecting the horizontal direction. It is characterized by being freely assembled.

Further, in the mounting member according to the present invention, it is preferable that the suspension rod is provided with a damping mechanism for damping the input in the extending direction.

Further, in the mounting member according to the present invention, it is preferable that the rotation shaft of the mounting member to which the suspension rod is mounted is arranged coaxially with the rotation shaft of the mounting member to which the tension adjusting device is mounted.

Further, in the mounting member according to the present invention, the rotation shaft of the mounting member to which the suspension rod is mounted is located along the extension direction of the tension adjusting device with respect to the rotating shaft of the mounting member to which the tension adjusting device is mounted. It is preferable that the suspension rod is arranged on the attachment portion side with the tension adjusting device.

According to the present invention, the tension adjusting device is attached to the support column by the mounting member and the hanging rod, and the mounting member and the hanging rod are rotating shafts extending in a direction intersecting the horizontal direction by the first member and the second member. When the tension adjusting device is shaken due to an earthquake or the like, the load is not transmitted to the strut band and the suspension rod to prevent damage to the strut band and the suspension rod, and to suppress weight increase. be able to.

Further, according to the present invention, since the suspension rod is provided with a damping mechanism for damping the input in the extension direction, it is possible to positively suppress vibration when the tension adjusting device is shaken.

Further, according to the present invention, since the rotation shafts of the tension adjusting device and the mounting member of the suspension rod are arranged substantially coaxially with each other, the tension adjusting device is horizontal when the tension adjusting device and the suspension rod are shaken. It is maintained in the posture, and no unnecessary external force acts on the suspension rod.

Further, according to the present invention, since the rotation shaft of the mounting member of the suspension rod is arranged on the mounting portion side with the tension adjusting device with respect to the rotating shaft of the mounting member of the tension adjusting device, the tension adjusting device and the suspension are suspended. When the rod sways, the tip of the tension adjusting device is in a posture of facing upward, and the moment due to the tension in this posture is applied in the direction of pulling the suspension rod, so that buckling of the suspension rod can be prevented.

The figure which shows the attachment state of the attachment member which concerns on embodiment of this invention. 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 which concerns on embodiment of this invention. An enlarged view of a mounting member according to an embodiment of the present invention. The figure which shows the structure of the suspension rod which concerns on other embodiment of this invention. The figure which shows the operation of the attachment member which concerns on embodiment of this invention.

Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the means for solving the invention. ..

FIG. 1 is a view showing a mounting state of a mounting member according to an embodiment of the present invention, FIG. 2 is an enlarged view of a mounting member according to an embodiment of the present invention, and FIG. 3 is an enlarged view of the mounting member according to the embodiment of the present invention. FIG. 4 is an enlarged view of a mounting member according to an embodiment of the present invention, and FIG. 5 is an enlarged view of a suspension rod according to another embodiment of the present invention. It is a figure which shows, and FIG. 6 is a figure which shows the operation of the attachment member which concerns on embodiment of this invention.

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

A first coil spring in a compressed state is housed in the radial gap between the outer tubular member 2 and the central tubular member. One end of the first coil spring is in contact with the outer flange portion formed on the central tubular member, and the other end of the first coil spring is in contact with the inner flange portion formed on the outer tubular 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 the outer flange portion formed on the inner cylinder member 3, and the other end of the second coil spring is in contact with the inner flange portion formed on the central cylinder member. The portion of the first coil spring and the second coil spring that come into contact with the tubular member is coated or filled with grease, which is a lubricant, so as not to hinder the relative slippage between the two. The lubricant is not limited to grease as long as it has a lubricating function.

The train line 10 is attached to the end surface of the inner cylinder member 3 in FIG. 1 via the train line attachment member. Examples of the train line include overhead lines for railways, but overhead lines for electric power for other purposes, overhead lines for signal transmission, overhead lines for support, and the like may be used.

Further, the tension adjusting 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 the mounting member 20 attached to the strut 11 by the strut band 12.

Further, one end of a rod-shaped suspension rod 7 is attached to the upper portion of the outer tubular member 2, and the other end of the suspension rod 7 is fixed to the upper portion of the support column 11 by a support column band 12 via the attachment member 20.

As shown in FIG. 2, the mounting member 20 according to the present embodiment includes a first member 21 attached to a support column and a second member 22 attached to a tension adjusting device or a suspension rod 7 connected to a train line 10. And have. The first member 21 and the second member 22 are rotatably assembled with each other by a rotation shaft 23 or a suspension rod rotation shaft 24 extending along a direction intersecting in the horizontal direction (vertical direction in FIG. 1). There is.

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

The strut band 12 includes a pair of outer peripheral portions 15 and 15 in contact with the outer circumference of the strut 11, and mounting portions 14 extending in the horizontal direction from both ends of the outer peripheral portion 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 in a state where the first member 21 is mounted.

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 portion fixed to the support portion 6. It has 25.

When the mounting member 20 is configured in this way, the rotating shaft 23 can be arranged substantially parallel to the column 11, and the rotating shaft 23 can be arranged in the vicinity of the column 11, so that the tension adjusting device 1 can be arranged in the event of an earthquake or the like. Even if it is shaken, 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 the present embodiment, the suspension rod 7 is also mounted by the same mounting member 20 as the mounting member 20 mounted on the tension adjusting device 1. Since the rotation shaft of the mounting member 20 to which the suspension rod 7 is attached acts as the suspension rod rotation shaft 24 in this way, when the tension adjusting device 1 is shaken, the suspension rod 7 is accompanied by the shaking of the tension adjusting device 1. Since the suspension rod 7 itself can be shaken, it is possible to prevent the suspension rod 7 from breaking.

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 adjusting device 1 forms a rotating portion 13'that can rotate around the rotating shaft 23 on the support column band 12', and is a second mounting member 20'. 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 so as to have the suspension rod rotation shaft 24 by the support column band 12 ′ having the rotation portion 13 ′.

As shown in FIG. 5, the suspension rod 7 may include a damping mechanism 30. As the damping mechanism 30, various conventionally known damping mechanisms can be adopted as long as the external force input in the extending direction of the suspension rod 7 can be damped. For example, a hydraulic or spring type damping mechanism can be used. It is suitable to be adopted.

At this time, the suspension rod rotation shaft 24 of the mounting member to which the suspension rod 7 is mounted is not arranged coaxially with the rotation shaft 23 of the mounting member of the tension adjusting device 1, but is rotated with respect to the support column band 12 of the tension adjusting device 1. Therefore, by arranging the suspension rod 7 so that the length changes, it is preferable that the damping mechanism functions more effectively by the change in length.

When the suspension rod 7 is not provided with the damping mechanism 30, the rotation shaft 23 and the suspension rod rotation shaft 24 are substantially coaxial, or the suspension rod rotation shaft 24 is closer to the tension adjusting device 1 than the rotation shaft 23. It is preferable that they are arranged so as to be. Specifically, as shown in FIG. 6A, when the rotation shaft 23 and the suspension rod rotation shaft 24 are arranged coaxially with each other, the tension adjusting device 1 and the suspension rod 7 are shaken, and the support column band. When rotating with respect to 12, the tension adjusting device 1 can maintain a horizontal posture.

When the suspension rod rotation shaft 24 is arranged on the tension adjusting device 1 side, the radius of gyration of the suspension rod 7 is smaller than the radius of rotation of the tension adjusting device 1 as shown in FIG. 6B. Therefore, the tension adjusting device 1 is in an upward posture, and the tension generated by the train line 10 acts as a tensile load on the suspension rod 7.

On the other hand, when the suspension rod rotation shaft 24 is arranged closer to the support column 11 than the rotation shaft 23, the rotation radius of the suspension rod 7 becomes larger than the rotation radius of the tension adjusting device 1, and the tension adjusting device 1 becomes larger. It will be in a downward position. In this case, since the tension of the train line 10 acts on the suspension rod 7 as a compressive load, the suspension rod 7 may be buckled by the compressive load.

As described above, considering the load applied to the suspension rod 7 due to the shaking of the suspension rod 7, the rotation shaft 23 and the suspension rod rotation shaft 24 are preferably arranged coaxially, but should be arranged coaxially. If this is not possible, it is desirable to arrange the suspension rod rotation shaft 24 on the tension adjusting device 1 side in consideration of construction accuracy.

In the above-described embodiment, the case where the suspension rod 7 is fixed to the support column 11 has been described, but the suspension rod 7 may be fixed to the wall surface of the tunnel in a tunnel or the like. It is clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present invention.

1 Tension adjuster 2 Outer cylinder member 3 Inner cylinder member 6 Support part 7 Suspension rod 10 Train line 11 Strut 12 Strut band 20 Mounting member 21 First member 22 Second member 23 Rotation shaft 24 Suspension rod Rotation shaft 30 Attenuation mechanism

Claims (4)

A mounting member that attaches a tension adjusting device connected to a train line and a suspension rod that supports the tension adjusting device to a support column.
The attachment member has a first member attached to the support column and a second member attached to the tension adjusting device or the suspension rod.
A mounting member characterized in that the first member and the second member are rotatably assembled with each other by a rotation shaft extending in a direction intersecting a horizontal direction. In the mounting member according to claim 1,
The suspension rod is a mounting member including a damping mechanism that attenuates an input in an extension direction. In the mounting member according to claim 1 or 2.
A mounting member characterized in that the rotating shaft of the mounting member to which the suspension rod is mounted is arranged coaxially with the rotating shaft of the mounting member to which the tension adjusting device is mounted. In the mounting member according to claim 1 or 2.
The rotation shaft of the mounting member to which the suspension rod is attached is attached to the tension adjusting device of the suspension rod along the extension direction of the tension adjusting device with respect to the rotating shaft of the mounting member to which the tension adjusting device is attached. A mounting member characterized in that it is arranged on the part side.

Images