JP2002038404A - Movable rail support device in movable crossing of turnout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable rail support device for allowing a movable rail to perform sliding motion without any oil in the movable crossing of a turnout and without any damage even in the case that the load of a train is applied on the movable rail. SOLUTION: In the support device wherein the movable rail 12 in the movable crossing 10 of the turnout can be slidably supported between a reference position PS and a switching position PF, a support ball 24 is brought into contact with the lower face of the movable rail 12 during the sliding motion of the movable rail 12 to provide a rail receiving bearing 22 performing rolling motion while supporting the movable rail 12, the support ball 24 is not brought into contact with the movable rail 12 between the reference position PS and the switching position PF in the movable rail 12 on the rail receiving bearing 22, and arranged at a position brought into contact with and supported on the movable rail 12 on their intermediate position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for a railway turnout, and more particularly to a movable rail support device for a movable crossing of a turnout.

[0002]

2. Description of the Related Art In a railway track, one track (track) is replaced by another track (track).
A branching device is installed at a position where the branching is made. FIG. 4 shows the overall schematic configuration of this branching device. In the figure, reference numeral 200 denotes the branch unit, and the branch unit 200 in this example is a branch line 2
02 is an example of a left branch on the left side with respect to the reference line 204. In the figure, reference numeral 206 denotes a point portion of the branch device 200, 208 denotes a lead portion, and 210 denotes a crossing portion where a line crosses a line. .

[0003] Here, 212a and 212b are a left (curved) basic rail and a right (straight) basic rail, respectively, and 214a and 214b are a left (curved) main rail and a right (straight) main rail, respectively. 216b is a left movable rail (tongue rail) and right movable rail (tongue rail), respectively, and 218a and 218b are a left (straight) lead rail and a right (curved) lead rail, respectively. Reference numeral 220 denotes a guardrail.

FIG. 5 shows the point portion 206 and its peripheral portion. As shown in FIG. 5, at the point portion 206, a floor plate 224 is placed on a sleeper 222.
The movable rails 216a and 216b are placed on the floor plate 224, and the movable rails
Tracks 16a and 216b are moved on the floor plate 224 to switch the tracks.

There are two types of the above-mentioned crossing section 210, that is, a crossing section 210 where a track intersects with a fixed crossing shown in FIG. 4 and a movable crossing in which a movable rail moves. In the case of passing through the crossing section 210, the latter movable crossing type is adopted.

FIG. 6 shows a nose movable crossing as the movable crossing. In the figure, reference numeral 226 denotes a movable rail (nose rail).
The line is switched by moving between the state shown in FIG. 6 (I) and the state shown in FIG. 6 (II). In this movable crossing, a floor plate 224 similar to the above is used, and a movable rail 226 slides on the floor plate 224.

Conventionally, these point floor boards or crossing floor boards, more specifically, the portions of the floor board 224 on which the movable rails 216a, 216b and 226 slide are made of SS material or high manganese cast steel. , 216b, 226 are the floor plates 22
The lubricating oil is applied on the floor plate 224 so as to slide smoothly on the floor 4 and to prevent rust.

[0008] However, the lubricating oil applied to the floor plate 224 is lost with the passage of time, whereby the friction coefficient when the movable rails 216a, 216b, 226 slide on the floor plate 224 is increased, and the slidability is reduced. In the past, dirt and sand, etc. adhered to the lubricating oil and became contaminated, so that conventionally, regular and frequent maintenance work including the application and cleaning of the lubricating oil was required. A great deal of effort has been spent, and a solution has been desired.

Therefore, at the point portion 206, a movable rail 216 is mounted by a bearing device having a rail receiving bearing.
Is slidably supported (JP-A-9-195201). FIG. 7 shows a specific example thereof. In the figure, reference numeral 227 denotes a rail bearing provided on the floor plate 224 and has a support ball 228. When the movable rail 216 slides, the support ball 228 is brought into contact with the lower surface of the movable rail 216.
The supporting balls 228 while supporting the movable rail 216
Is rolled to assist the sliding movement of the movable rail 216.

Here, the rail receiving bearing 227 is arranged apart from the basic rail 212, that is, the movable rail 2
16 is in contact with the basic rail 212, the support ball 228 of the rail receiving bearing 227 is moved by the movable rail 216.
Of the movable rail 216
When it slides away from the basic rail 212 and slides rightward in the drawing, it rolls while contacting and supporting the lower surface thereof to assist the sliding movement.

As described above, the rail receiving bearing 227 is arranged apart from the basic rail 212 so that the support ball 228 is not in contact with the lower surface of the movable rail 216 when the movable rail 216 is in contact with the basic rail 212. The reason is that at the position where the movable rail 216 contacts the basic rail 212, the train wheels are mounted on the movable rail 216 and the entire load of the train acts on the movable rail 216. Rail 2
In the state where the movable rail 2 is supported, the rail receiving bearing 227 cannot withstand the load, and is crushed or deformed, impairing its function.
16 is in contact with the basic rail 212 when the bearing surface 230
In order to support this, the rail bearing 22
This is to prevent the load of the train from being applied to 7.

On the other hand, the movable rail 216 is
In the state in which the train is retracted from the train to the final evacuation position, the wheels of the train do not ride on the movable rail 216,
Here, the movable rail 216 is supported by the rail receiving bearing 227 even at the final retracted position (the final retracted position indicated by the two-dot chain line in the figure).

In the bearing device using the rail receiving bearing 227, the movable rail 216 can be slid smoothly, and therefore, lubricating oil is applied to the floor plate 224 for sliding of the movable rail 216, and the movable rail 216 is periodically moved. In addition, an advantage is obtained that maintenance work such as cleaning and replenishment of lubricating oil need not be performed frequently.

However, in the case of the bearing device shown in FIG. 7, since the movable rail 216 is supported by the rail receiving bearing 227 at the final moving position (final retreat position), the movable rail 216 is moved by the crossing portion 210. There is a problem that it cannot be applied as a bearing device for the rail 226.

In the movable crossing, when the movable rail is in any of the reference position (conversion start point position) and the switching position (conversion end point position), the wheels of the train are placed on the movable rail. If the rail is supported by the rail receiving bearing 227 at the final moving position, there arises a problem that the rail receiving bearing 227 is crushed or deformed by the load of the train passing on the movable rail 226 at that time.

[0016]

SUMMARY OF THE INVENTION The movable rail support device in the movable crossing of the branching device according to the present invention has been devised to solve such a problem. According to a first aspect of the present invention, there is provided a bearing device for slidably supporting a movable rail in a movable crossing of a branching device between a reference position and a switching position. A rail receiving bearing that contacts the lower surface of the movable rail to perform rolling motion while supporting the movable rail, and the rail receiving bearing is configured such that the support ball is moved between the reference position and the switching position on the movable rail. The movable rail is not in contact with the movable rail, and is located at a position in contact with and supporting the movable rail at an intermediate position between them.

According to a second aspect of the present invention, in the first aspect, the bearing device supports the movable rail between the reference position and the switching position at another position along the movable rail with respect to the rail receiving bearing. It is characterized by having a bearing surface that does.

According to a third aspect, in the second aspect, the bearing surface is formed at a position lower than a vertex of the support ball.

[0019]

As described above, in the bearing device of the present invention, the slide bearing of the movable rail is supported by the rail bearing, and the movable rail is mounted on the movable rail. The support ball is not in contact with the movable rail when it is located at the position and the switching position, that is, at the turning start point and the end point, and the support ball is arranged in a state of contacting the movable rail and supporting it at an intermediate position between them. According to this bearing device,
When the movable rail is slid, the rolling motion of the support ball in the rail receiving bearing allows the movable rail to slide smoothly, while the movable rail moves to the reference position and the switching position, that is, to the switching start point position and the end point position. When it is located, the load from the wheels can be prevented from acting on the rail bearings even when the train passes over it, so that the rail bearings can be prevented from being damaged by the load, so that it can be used for a long time. The lubrication function can be exhibited.

In the present invention, a bearing surface for supporting the movable rail between the reference position and the switching position can be provided at a position different from the rail receiving bearing along the movable rail (claim 2). The bearing surface can be formed at a position lower than the top of the support ball (claim 3). With this configuration, the movable rail can be firmly supported by the bearing surface at a position where the movable rail is separated from the rail receiving bearing.

Further, by providing the bearing surface at another position with respect to the rail bearing, the movable rail can be supported by the bearing surface immediately after passing the vertex of the support ball in the rail bearing. . In other words, the movable rail can be slidably supported by the rail receiving bearing to a position as close as possible to the reference position and the switching position.

Further, by forming the bearing surface at a position lower than the apex of the support ball, when the lower surface of the movable rail is supported by the support ball during the sliding movement, the lower surface of the movable rail and the bearing surface are not in contact with each other. The friction resistance can be reduced, and the movable rail can be moved lightly.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a movable crossing (here, a nose movable crossing) in a branching device,
2 is a movable rail (nose rail), and 14 is a sleeper. Here, the movable rail 12 is composed of a short nose rail 12a and a long nose rail 12b which cross each other at an acute angle.

In FIGS. 1B and 1C, reference numeral 16 denotes a wing rail, and in FIG.
4 is a wing rail floor plate provided immediately above, and in FIG. 2B, 20 is a bearing floor plate disposed at a position between the sleepers 14.

As shown in FIG. 1 (B), a plurality (two in this case) of rail bearings 22 are arranged on the bearing floor plate 20 inside the wing rail 16 at predetermined intervals. I have. Here, the two rail receiving bearings 22 are arranged on the left and right sides of the movable rail 12 at an interval equal to the interval between the short nose rail 12a and the long nose rail 12b. These bail receiving bearings 22 are composed of a supporting ball 24 and its casing 2.
6 and is embedded in a recess 28 formed on the upper surface of the bearing floor plate 20.

[0026] In the movable crossing 10, the movable rail 12 in FIG. 1 (B) and (C) a reference position indicated by solid line in (conversion start position) _{P S} and the switching position (converted end position) indicated by the two-dot chain line P _A sliding movement is performed between the _F and the left and right in the figure, thereby switching the track.

In this embodiment, each rail receiving bearing 22
But also in a position supporting the ball 24 is not in contact with the lower surface of the movable rail 12, and an intermediate position of its travel as shown in FIG. 2 (II) in either their reference position P _S, and the switching position P _F P _M, for more information reference position _{P S} and the switching position P
In the intermediate position P _M excluding and _F, the support ball 24 is disposed at a position for supporting the contact with a bottom surface of the movable rail 12.

On the other hand, the upper surface of the wing rail floor plate 18 immediately above the pillow 14 is formed as a bearing surface 30 for supporting the lower surface of the movable rail 12. Here, the bearing surface 30 is formed at a position slightly lower than the apex of the support ball 24 in FIG.

FIG. 2 shows the operation of the rail bearing 22 when the movable rail 12 slides in the horizontal direction in the figure.
FIG. 3 shows the operation of the bearing surface 30 on the wing rail floor plate 18. As the show FIG 2 (I), when the movable rail 12 is positioned at the reference position P _S, the ones that are located on the inner left side in the figure of the two rail receiving bearing 22, the support ball 24 Is located in the gap in the movable rail 12, that is, between the short nose rail 12a and the long nose rail 12b, and the support ball 24 is in a non-contact state with the lower surface of the movable rail 12, and Rail bearing 22 of the movable rail 12
And the supporting ball 24 is also in a non-contact state with the lower surface of the movable rail 12.

In this state, when the movable rail 12 slides rightward in the figure, the respective support balls 24 of the two rail bearings 22 move immediately after the start of the slide movement as shown in FIG. 2 (II). The lower rail 12 is in contact with the lower surface of the rail 12 to support the sliding movement of the movable rail 12 while rolling to assist the sliding movement.

Then, as shown in FIG.
Finally, the movable rail 12 is switched to the switching position P. _FWhere we reached
And the support bolts of the two rail bearings 22
Is in contact with the lower surface of the movable rail 12 again.
State. For details, see the rail bearing 22 on the right side in the figure.
Of the support ball 24 at the position of the gap between the movable rails 12
The short nose rail 12a and the long nose rail 12b
And the rail bearing on the left side in the figure.
The support ball 24 of the movable rail 12
Each of the movable rails 12
Is in a state of non-contact with the lower surface of.

On the other hand when the movable rail 12 is positioned at the reference position P _S, as shown in FIG. 3 (I), a state where the bearing surface 30 of the wing rail floor 18 upper surface is supported the lower surface of the movable rail 12 Become. At this time, the movable rail 12 is
As shown in (I), the lower surface is in a state of being separated from the rail receiving bearing 22.

Subsequently, when the movable rail 12 slides to the right in the figure, immediately after the sliding movement, as shown in FIG.
As shown in FIG. 5, the movable rail 12 is in a state of floating from the bearing surface 30. Then, in a state where the movable rail 12 floats from the support surface 30, the movable rail 12 is supported by the rail receiving bearing 22 and slides rightward as shown in FIG. 2 (II).

[0034] and finally the movable rail 12 reaches the switching position _{P F,} the movable rail 12 is herein FIG 2 (II
As shown in (I), it comes off the rail receiving bearing 22, and is again supported by the bearing surface 30 as shown in FIG. 3 (III).

The movable rail 12 is shown in FIGS.
When in the reference position _{P S} of (I), train movable rail 1
2 and travels in the direction of the reference line 204 in FIG. On the other hand, the movable rail 12 is shown in FIGS. 2 (III) and 3 (III).
Also train also overcame movable rail 12 travels in the direction of the branch line 202 of FIG. 4 when the located switching position P _F. In each case, the wheels of the train run on the movable rail 12.

According to the bearing device of the present embodiment, when the movable rail 12 is slid, the movable rail 12 can be smoothly slid by the rolling motion of the support ball 24 in the rail receiving bearing 22. , the movable rail 12 is the reference position _{P S} and a switching position _{P F}
When the train is moved to the movable rail 1, the rail receiving bearing 22 is in non-contact with the movable rail 12.
2 can prevent the load from the wheels from acting on the rail bearing 22 even when passing over the rail, thereby preventing the rail bearing 22 from being damaged by the load and exhibiting the desired lubrication function for a long time. Can be done.

In this embodiment, the movable rail 12 is set at the reference position P.
The bearing surface 30 for supporting at _S and the switching position P _F, and the rail receiving bearing 22 along the movable rail 12 is provided in the wing rail floor 18 of different positions, and from the bearing surface 30 apex of the support balls 24 Is formed at a lower position, the movable rail 12 is supported by its bearing surface 30 at a position where the movable rail 12 is separated from the rail receiving bearing 22.
Can be firmly supported.

The bearing surface 30 is connected to the rail bearing 22.
By providing the movable rail 12 at a different position, the movable rail 12 can be supported on the bearing surface 30 as soon as possible after passing the vertex of the support ball 24 in the rail receiving bearing 22. That is, the slide movement of the movable rail 12 can be assisted by the rail receiving bearing 22 from a position near the start point to a position near the end point.

When the lower surface of the movable rail 12 is supported by the support balls 24 during the sliding movement, the movable rail 12
The contact surface 30 and the bearing surface 30 are not in contact with each other so that the frictional resistance can be reduced, and the movable rail 12 can be moved lightly.

Although the embodiment of the present invention has been described in detail, this is merely an example. For example, in the above embodiment, two rail bearings 22 are provided. However, the number of rail bearings 22 can be appropriately changed, for example, three or more rail bearings 22 can be provided by changing the size. ,
In addition, the present invention can be configured in various forms without departing from the gist of the present invention. For example, the bearing floor plate 20 may be provided on the sleeper 14 and the bearing surface 30 may be provided thereon.

[Brief description of the drawings]

FIG. 1 is a view showing a bearing device in a movable crossing according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view of a main part of the bearing device of the same embodiment.

FIG. 3 is an operation explanatory view of a main part different from FIG. 2 of the bearing device of the same embodiment.

FIG. 4 is a diagram showing a schematic configuration of a branching device of a railway track.

FIG. 5 is a perspective view showing a point portion and its peripheral portion in FIG. 4;

FIG. 6 is a diagram illustrating an example of a movable crossing as a crossing unit in a branching device.

FIG. 7 is a view showing an example of a conventional bearing device at a point portion in FIG. 4;

[Explanation of symbols]

10 movable Crossing 12 movable rail 22 rail receiving bearing 24 supporting the ball 30 bearing surface P _S reference position (conversion start position) _{P F} switch position (converted end position) _{P M} intermediate position

Continuing on the front page (72) Inventor Takashi Miyamoto 420-1 Koyama, Matsudo-shi, Chiba Pref. Matsudo-Koyama Flat 504 (72) Inventor Jiro Kuratsu 3-9-35-224, Omiya-cho, Mishima-shi, Shizuoka (72) Invention Person Yoshinobu Yokoyama 103-18 Minayama-shinden, Ina-shi, Kosakai-cho, Hoai-gun, Aichi Prefecture (72) Inventor Takashi Kimura 20-72 Higuchi, Yatsurugi-cho, Iwakura-shi, Aichi Prefecture (72) Inventor Ove Oling Orebro S-70115 Ko Gifer Nordic Abbey (72) Inventor Shingo Ichiyanagi 512 Asahi Momodai, Chita City, Aichi Prefecture (72) Inventor Takao Umemura 24-8 Higashisendai Ogawa, Higashiura-cho, Chita-gun, Aichi Prefecture F-8 Term (Reference) 2D056 AB03

Claims (3)

[Claims] 1. A supporting device for slidably supporting a movable rail in a movable crossing of a branching device between a reference position and a switching position, wherein a supporting ball of the movable rail is moved when the movable rail slides. A rail receiving bearing is provided for making the rolling motion while supporting the movable rail by contacting the lower surface, and the rail receiving bearing is arranged such that the supporting ball moves relative to the movable rail at the reference position and the switching position on the movable rail. A support device for a movable rail in a movable crossing of a turnout, wherein the device is arranged in a non-contact, intermediate position between the movable rail and the movable rail. 2. The bearing device according to claim 1, wherein the bearing device has a bearing surface at another position along the movable rail with respect to the rail receiving bearing, the bearing surface supporting the movable rail between the reference position and the switching position. A bearing device for a movable rail in a movable crossing of a branching device. 3. The support device for a movable rail in a movable crossing of a branching device according to claim 2, wherein the bearing surface is formed at a position lower than a vertex of the support ball.