JP7252538B2 - Mounting member for tension adjusting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an attachment member for attaching a tension adjusting device to a strut for adjusting the tension of an overhead contact line necessary for supplying electric power to a railway vehicle.

In general, when the tension changes, there is a problem that the overhead contact line separates from the pantograph or the stress increases. To prevent this, it is necessary to maintain the contact state with the pantograph by installing it with an appropriate tension. be. In addition, it is considered that tension fluctuations due to expansion and contraction of overhead contact lines due to changes in the outside air temperature are considered to be factors for fluctuations in the tension of the contact lines.

As a means for adjusting the tension of such overhead contact lines, a tension adjusting device is provided at a location where the contact wire is detained, and the tension adjusting device maintains the tension of the contact wire at an appropriate level. there is Various forms of such a tension adjusting device are known. For example, as described in Patent Document 1, pulley type and spring type tension adjusting devices are known.

Among the tension adjusting devices, a spring type tension adjusting device is supported by a post via a substantially triangular mounting bracket 100 as shown in FIG.

JP-A-6-144088

However, while the spring-type tension adjustment device is more maintainable than the pulley type, it is a structure in which heavy objects are placed on the top of the pillars, so during an earthquake, an increase in the load on overhead contact lines and pillars can damage equipment. is concerned. It is conceivable that the tension adjustment device swayed in the horizontal direction due to the seismic load, and an excessive load was applied to the strut band attached to the strut, leading to equipment damage. A possible reason for such load transmission is that the conventional mounting bracket 100 uses a substantially triangular plate-like member.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems. Another object of the present invention is to provide a mounting member capable of suppressing an increase in weight as a countermeasure when a tension adjusting device is shaken.

A mounting member according to the present invention comprises a first member mounted on a post and a second member mounted on a tension adjusting device connected to a contact line, wherein the first member and the second member are horizontal. The second member is rotatably assembled to each other by a rotation shaft extending in a direction intersecting the direction, and the second member includes a body portion attached to the tension adjusting device and a rotation shaft mounting portion for assembling the rotation shaft, The body portion is characterized in that a thinned portion is formed so that the horizontal cross section is formed in a substantially H shape .

Moreover, in the mounting member according to the present invention, it is preferable that the second member is rotatably mounted to the tension adjusting device via a second rotating shaft extending in the horizontal direction.

Moreover, in the mounting member according to the present invention, it is preferable that the first member has clearance adjusting means for adjusting a mounting dimension to the support.

Moreover, in the mounting member according to the present invention, it is preferable that the first member has at least two fixing portions fixed to the support.

According to the present invention, the mounting member is divided into the first member and the second member, and the first member and the second member are rotatably assembled to each other by the rotation shaft. When the tension adjusting device sways due to an earthquake or the like, 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 second member has the second rotating shaft, when the tension adjusting device is shaken, the load can be more reliably transferred by the rotating shaft and the second rotating shaft. can be configured not to transmit to

Further, according to the present invention, since the main body portion is formed to have a substantially H-shaped cross section, it is possible to reduce the weight of the mounting member while maintaining the strength.

Further, according to the present invention, since the first member is provided with the gap adjusting means, it is possible to securely attach the support band to the first member.

Further, according to the present invention, the first member is fixed to the support by at least two fixing portions, so that the tension adjustment device can be securely attached to the support.

The figure which shows the attachment state of the attachment member which concerns on embodiment of this invention. The front view of the attachment member which concerns on embodiment of this invention. The top view of the attachment member which concerns on embodiment of this invention. The front view of the conventional mounting bracket.

Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. In addition, 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 solution of the invention. .

FIG. 1 is a diagram showing a mounting state of a mounting member according to an embodiment of the present invention, FIG. 2 is a front view of the mounting member according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a plan view of a mounting member according to the present invention, and FIG. 4 is a front view of a conventional mounting bracket.

As shown in FIG. 1, the tension adjusting device 1 includes three coaxially arranged tubular members, namely, an outer tubular member 2, a central tubular member 3, and an inner tubular member 4. As shown in FIG.

A first coil spring in a compressed state is housed in a radial gap between the outer tubular member 2 and the central tubular member 3 . One end of the first coil spring contacts the outer flange formed on the central tubular member 3, and the other end of the first coil spring contacts the inner flange formed on the outer tubular member 2. .

A second coil spring in a compressed state is accommodated in a radial gap between the central tubular member 3 and the inner tubular member 4 . One end of the second coil spring contacts the outer flange formed on the inner tubular member 4, and the other end of the second coil spring contacts the inner flange formed on the central tubular member 3. . Grease, which is a lubricant, is applied or filled in the portions of the first coil spring and the second coil spring that contact the cylindrical member so as not to hinder the relative sliding between the two. The lubricant is not limited to grease as long as it has a lubricating function.

A contact wire mounting member 5 is fixed to the end surface of the inner cylindrical member 4 in FIG. The contact wire mounting member 5 has a bolt hole, and the contact wire 10 is attached to the contact wire mounting member 5 using this bolt hole. As the contact line, an overhead wire for railroads is mentioned, but it may be an overhead wire for electric power for other uses, an overhead wire for signal transmission, an overhead wire for support, and the like.

Further, the tension adjusting device 1 is supported by the support 6 on the support 11 . That is, the flange portion of the support portion 6 is pressed by the mounting member 20 attached to the support 11 by the support band 12, so that the support portion 6 is prevented from moving in the horizontal direction relative to the outer cylindrical member 2. .

Furthermore, one end of a rod-shaped hanging member 7 is attached to the upper portion of the outer tubular member 2 , and the other end of the hanging member 7 is fixed to the upper portion of the support 11 by a support band 12 .

As shown in FIG. 2, the mounting member 20 according to this embodiment includes a first member 21 attached to a support and a second member 31 attached to a tension adjusting device connected to a contact line. . The first member 21 and the second member 31 are rotatably assembled to each other by a rotation shaft 22 extending along a direction crossing the horizontal direction (vertical direction in FIG. 1). The rotating shaft 22 is a bolt-shaped member, and a nut 23 is attached to the distal end thereof to form a retaining mechanism.

The first member 21 is a substantially T-shaped member, and has a plurality of fixing portions 24 for fastening a strut band attached to a strut along the insertion direction of the rotating shaft 22 . The first member 21 also has a rotating portion 25 having a through hole 26 through which the rotating shaft 22 can be inserted.

The second member 31 includes a rotary shaft attachment portion 32 to which the rotary portion 25 of the first member 21 is attached, and a body portion 33 attached to the tension adjusting device. The rotating shaft mounting portion 32 is a pair of flanges extending horizontally from the body portion 33, and the rotating portion 25 of the first member 21 is assembled between the pair of flanges. In addition, a through hole 37 through which the rotating shaft 22 can be inserted is formed in the rotating shaft mounting portion 32, and by assembling it coaxially with the through hole 26 of the rotating portion 25, the rotating shaft 22 can be inserted. It is

As shown in FIG. 1, the main body portion 33 is formed with a second rotating shaft insertion portion 34 to which a second rotating shaft 36 extending in the horizontal direction is assembled to the tension adjusting device. A recessed portion 35 is formed between the portion 34 and the rotary shaft mounting portion 32 . Since the main body portion 33 is formed with the reduced thickness portion 35 in this manner, the vertical cross section is formed in a substantially H shape as shown in FIG. 3 .

Moreover, it is preferable that the support band 12 is attached to the fixing portion 24 of the first member 21 via a washer-like gap adjusting means 27 . This gap adjusting means 27 makes it possible to secure an appropriate mounting surface between the support band 12 and the mounting member 20 without fail even if a manufacturing error or the like occurs in the support band 12 .

In the mounting member 20 according to the present embodiment configured in this manner, the first member 21 and the second member 31 are rotatably assembled by the rotating shaft 22, so that the tension adjusting device may be damaged by an earthquake or the like. Even if the first member 21 and the second member 31 sway, the load is released by rotating the first member 21 and the second member 31 around the rotating shaft 22, and the load applied to the mounting bracket such as the strut and the strut band is reduced. By doing so, it is possible to prevent the destruction of the overhead contact line equipment.

Further, since the mounting member 20 according to the present embodiment is assembled to the tension adjusting device by the second rotating shaft 36 extending along the horizontal direction intersecting with the rotating shaft 22, the rotating shaft 22 and the second rotating shaft 36 are attached. It is possible to reduce the load in a plurality of directions such as the vertical direction and the horizontal direction by reducing the load on the two axes of the rotating shaft 36 .

In addition, since the main body portion 33 of the second member 31 is formed with the reduced thickness portion 35 and the vertical cross-sectional shape is formed in a substantially H shape, the weight of the mounting member 20 can be reduced while ensuring the strength thereof. becomes possible.

Furthermore, since the first member 21 has two or more fixing portions 24 that are fixed to the column along the vertical direction, it is possible to reliably fix the mounting member 20 to the column.

In the above-described embodiment, the case where two fixing portions 24 are formed has been described, but two or more fixing portions 24 may be formed. In addition, although the support band is attached to the first member 21 via the gap adjusting means 27, it can be mounted without using the gap adjusting means 27 if the mounting surface of the first member 21 can be properly secured. I do not care. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

Reference Signs List 1 tension adjusting device 2 outer cylindrical member 3 central cylindrical member 4 inner cylindrical member 5 contact wire mounting portion 6 support portion 7 suspension member 10 contact wire 11 support 12 support band 20 mounting member 21 first member 22 rotating shaft 23 nut 24 Fixed portion 25 Rotating portion 26 Through hole 27 Gap adjusting means 31 Second member 32 Rotating shaft mounting portion 33 Body portion 34 Second rotating shaft insertion portion 35 Thinning portion 36 Second rotating shaft.

Claims (4)

comprising a first member attached to the strut and a second member attached to a tension adjustment device connected to the contact line;
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 second member includes a main body portion to be attached to the tension adjusting device and a rotary shaft attachment portion to which the rotary shaft is attached, and the main body portion has a thinned portion and has a substantially H-shaped horizontal cross section. A mounting member, characterized in that: The mounting member according to claim 1,
The mounting member, wherein the second member is rotatably mounted to the tension adjusting device via a second rotating shaft extending in a horizontal direction. 3. The mounting member according to claim 1 or 2 ,
A mounting member, wherein the first member has clearance adjusting means for adjusting a mounting dimension to the strut. In the mounting member according to any one of claims 1 to 3 ,
The mounting member, wherein the first member includes at least two fixing portions fixed to the support.

Images