JP2007211565A - Movable rail support device in movable crossing of turnout - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a movable rail support device capable of simplifying a structure by reducing required component part counts of a movable crossing, reducing manpower for assembling a bearing floor panel and reducing cost as a whole. <P>SOLUTION: In a support device 11 of a movable rail 12 provided with a rail receiving bearing 22 and a bearing floor panel 20 which supports the rail receiving bearing 22, the bearing floor panel 20 is integrally constituted as a rail body 34-1 and 34-2 of wing rails 16 in the movable crossing. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support device for a railway branching device, and more particularly to a movable rail support device for a movable crossing of a branching device.

In a railway track, a branching device is installed at a point where another track (track) branches from one track (track).
FIG. 6 shows an overall schematic configuration of the branching device.
In the figure, reference numeral 200 denotes the branching device, and the branching device 200 in this example is an example in the case of the left branching in which the branching line 202 is on the left side with respect to the reference line 204. A point portion, 208 is a lead portion, and 210 is a crossing portion where the lines cross each other.

Here, 212a and 212b are a left (curved) basic rail and a right (straight) basic rail, respectively, 214a and 214b are a left (curved) main rail and a right (straight) main rail, respectively, and 216a and 216b are respectively A left movable rail (tongrail) and a right movable rail (tongrail), and 218a and 218b are a left (straight) lead rail and a right (curved) lead rail, respectively. Reference numeral 220 denotes a guardrail.
Here, at the point part 206, the movable rails 216a and 216b slide on the floor board installed on the sleeper so that the line is switched as shown in FIGS. 6 (A) and 6 (B). It has become.

  The crossing unit 210, that is, the type of the crossing unit 210 where the tracks cross each other, includes a fixed crossing shown in FIG. 6 and a movable crossing in which the movable rail (nose rail) moves. In the case of passing through the crossing section 210 at high speed, the latter movable crossing format is adopted.

FIG. 7 shows a nose movable crossing as the movable crossing.
In the figure, reference numeral 226 denotes a movable rail (nose rail). The movable rail 226 moves between the state shown in FIG. 7I and the state shown in FIG.
Also in this movable crossing, the movable rail 226 slides on the floor board installed on the sleeper as in the point portion 206.

Conventionally, the crossing floorboard is made of steel, and lubricating oil is applied on the floorboard so that the movable rail 226 can slide smoothly on the floorboard and for rust prevention. Yes.
However, the lubricating oil applied to the floor board is lost with the passage of time, which increases the coefficient of friction when the movable rail 226 slides on the floor board and lowers the slidability. In the past, maintenance work, including the application and cleaning of lubricating oil, is necessary regularly, and a great deal of labor is spent for this purpose. A solution was desired.

  For this reason, in the previous patent application (Patent Document 1 below), the applicant of the present invention makes a rolling motion by bringing the support ball into contact with the lower surface of the movable rail during the movement of the movable rail and sliding the movable rail. There has been proposed a movable rail supporting device that includes a receiving bearing and a bearing floor plate that holds the rail receiving bearing, and that supports the movable rail so as to be slidable between a reference position and a switching position.

FIG. 8 shows an example.
228 is a wing rail fixed in a movable crossing in the figure, the reference position (conversion start position) switching position from _{P S} between the movable rail 226 and the rail body 230-1 and 230-2 of the wing rail 228 (conversion end point position) P _F, or are movable vice versa.
Reference numeral 232 denotes a support device that supports the movable rail 226 at a position between the sleepers when the movable rail 226 moves, and includes a rail bearing 234 and a bearing floor plate 236 that holds the rail bearing 234.

Rail receiving bearing 234 has a support ball 238 and the casing 240, from the movable rail 226 is the reference position _{P S} to the switching position _{P F,} or of the movable rail 226 to support the ball 238 when moving in the opposite The movable rail 226 is slid in the left-right direction in FIG.
Each of the rail bearings 234 is held in a fitted state in a recessed fitting portion 242 provided on the bearing floor plate 236.

The bearing floor plate 236 is made of steel, and is configured separately from the rail main bodies 230-1 and 230-2 of the wing rail 228, and the bearing floor plate 236 includes the rail main bodies 230-1 and 230-2. The support device 232 is configured by being fastened and assembled.
However, in this case, the bearing floor plate 236 is required as a separate member, and when this is manufactured in advance and the movable crossing is constructed, the bearing floor plate 236 must be assembled to the rail body 230-1, 230-2 of the wing rail 228 by post-assembly. As a result, the number of parts required for the movable crossing increases, the structure of the movable crossing becomes complicated, and the number of steps for assembling the bearing floor plate 236 is required, which increases the cost required for the movable crossing. Arise.

JP 2002-38404 A

  The present invention is based on the above situation, and the number of required components of the movable crossing is small and the structure can be simplified. Further, the number of steps for assembling the bearing floor plate can be reduced, thereby reducing the overall cost. The object of the present invention is to provide a support device for a movable rail in a movable crossing of a branching device that can be used.

  Thus, according to the first aspect of the present invention, there is provided a supporting device for slidably supporting the movable rail in the movable crossing of the branching device between the reference position and the switching position, wherein the support ball is moved during the movement of the movable rail. A rail bearing that slides the movable rail in contact with the lower surface of the movable rail, and a bearing floor plate that holds the rail bearing; and the bearing floor plate is a rail of the blade rail in the movable crossing. It is characterized by being configured integrally with the main body.

Effects and effects of the invention

  As described above, the present invention is a movable rail support device including a rail bearing and a bearing floor plate that holds the rail bearing, and the bearing floor plate is integrally formed with the rail body of the wing rail in the movable crossing. According to the present invention, it is possible to eliminate the process of manufacturing the bearing floor plate separately from the conventionally required wing rail rail body and the process of assembling the bearing floor plate to the wing rail rail body, and the number of components in the movable crossing can be reduced. The structure of the movable crossing can be simplified and the cost of the movable crossing can be reduced.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a movable crossing (in this case, nose movable crossing) in a branching device, 12 is a movable rail (nose rail), and 14 is a sleeper.
Here, the movable rail 12 is composed of a branch side 12a and a reference side 12b that cross each other at an acute angle.
Reference numeral 16 denotes a steel blade rail having a continuous shape in the longitudinal direction (rail direction). The movable rail 12 is slidably supported at a plurality of locations (three locations in the longitudinal direction) inside the blade rail 16. A bearing device 11 is provided.

2A shows a cross-section (A-A cross-section in FIG. 1) at a position between the sleepers 14 and 14 in FIG. 1, and FIG. 2B shows the cross-section at the position of the sleeper 14 in FIG. A cross section (BB cross section) is shown.
In these drawings, reference numeral 16 integrally includes a pair of rail bodies 34-1 and 34-2 that stand on fixed wing rails, and the movable rail 12 is interposed between the rail bodies 34-1 and 34-2. is caused to slide movement between said reference position P _S and the switching position P _F.

The wing rail 16 has a bottom portion integral with the rail bodies 34-1 and 34-2 that connects the rail bodies 34-1 and 34-2 at the bottom.
As shown in (B), a part of the bottom portion of the sleeper 14 is configured as a support floor plate 18 that supports the lower surface of the movable rail 12 at the reference position Ps and the switching position Pf. In other words, the support floor 18 is integrally formed with the rail bodies 34-1 and 34-2 on the sleeper 14.
The support floor plate 18 has an upper surface protruding upward by a minute dimension. The protruding surface is a supporting surface 30 for supporting the horizontal direction are a flat surface, such protruding surface is a reference position P _S and the switching position P _F to the lower surface of the movable rail 12.

On the other hand, as shown in (A), at the position between the sleepers 14 and 14, the bottom of the wing rail 16 is partially lowered (see FIG. (C)). A bearing floor plate 20 in the support device 11 is constituted by a part of the bottom portion formed into a shape. That is, the bearing floor plate 20 in the support device 11 is configured integrally with the rail main bodies 34-1 and 34-2 in the wing rail 16.
This bearing floor plate 20 is of course also integral with the support floor plate 18 of (B) and other parts of the bottom of the wing rail 16.
The bearing device 11 serves to slidably support the movable rail 12 at a position between the sleepers 14 and 14, and includes a rail bearing 22 and the bearing floor plate 20 that holds the rail bearing. .

Rail receiving bearing 22 has a support ball 24 and the casing 26, the movable rail 12 is the reference position P _S to the switching position P _F, or of the movable rail 12 to support the ball 24 when moving in the opposite The movable rail 12 is slid in the left-right direction in FIG.

The movable rail 12 has a part in the upper portion of the support device 11, that is, the central portion in the width direction is a protruding portion 13 that faces downward with respect to the reference surfaces 32 at both ends in the width direction, and the movable rail 12 moves. At this time, the lower surface of the projecting portion 13 is supported in contact with the support ball 24 of the rail bearing 22.
Here, the reference surface 32 of the movable rail 12 (A) and the reference surface 32 of (B) are the same surface.

As shown in FIG. 2C, a plurality of (two in this case) rail receiving bearings 22 are provided on the bearing floor plate 20, and the recessed portions 28 are formed on the upper surface of the bearing floor plate 20. It is held in the fitted state.
In the movable crossing 10, while the movable rail 12 and FIG. 2 (A) and (B) the reference position indicated by solid line in (conversion start position) P _S and the switching position shown by two-dot chain line (converted end position) P _F In the figure, the slide movement is made in the left-right direction, thereby switching the track.

Thus were each rail receiving bearing 22 in this embodiment are found in non-contact with a position in the lower surface of the support balls 24 are movable rail 12 in any of their reference position P _S, and the switching position P _F, and FIG. 3 (II) intermediate position P _M of which way the _movement, details reference position P _S and a switching position P _F and the support balls 24 in the intermediate position P _M excluding is supporting the contact with a bottom surface of the movable rail 12 is shown in Placed in position.
On the other hand, as shown in FIG. 2 (B), the top surface or support surface 30 of the support floor 18 of the sleeper 14 just above position, the lower surface of the reference position the movable rails 12 in the _{P S} and a switching position _{P F} (reference plane 32) To support.

FIG. 3 shows the operation of the rail bearing 22 when the movable rail 12 slides in the left-right direction in the drawing, and FIG. 5 shows the operation of the support surface 30 on the support floor plate 18.
As the show FIG 3 (I), when the movable rail 12 is positioned at the reference position P _S, the rail receiving the bearing 22 supporting the ball 24 is in the non-contact with the lower surface of the movable rail 12 .
From this state, when the movable rail 12 slides to the right in the figure, the support balls 24 of the rail bearings 22 immediately below the slide movement start as shown in FIG. 3 (II). To touch.

At this time, as shown in an enlarged view in FIG. 4, the apex of the support ball 24 is positioned slightly higher than the lower surface position of the projecting portion 13 of the movable rail 12 at the reference position P _S (or the switching position P _F ). The movable rail 12 is lifted from the support surface 30 by the level difference d as shown in FIG. 5 (II) because it is located (the rail receiving bearing 22 is provided as such). Become.
As a result, the movable rail 12 is supported only by the rail bearing 22. The rail bearing 22 slides the movable rail 12 by the rolling motion of the support ball 24 and assists the sliding motion of the movable rail 12.
Rail receiving bearings 22, where finally the movable rail 12, as shown in FIG. 3 (III) has reached the switching position P _F, a state of non-contact again to the lower surface of the movable rail 12, wherein The movable rail 12 is again supported by the support surface 30 of the support floor 18 on the sleeper 14 as shown in FIG.

Incidentally, when the movable rail 12 is in the reference position _{P S} in FIG. 3 (I) and Figure 5 (I), the train travels on the reference line 204 direction in FIG. 6 passes over the movable rail 12.
On the other hand, the movable rail 12 is traveling in the direction of the branch line 202 of FIG. 6 also train also overcome the movable rail 12 when located at the switching position P _F of FIG. 3 (III) and Figure 5 (III) To do.
In any case, the train wheel travels on the movable rail 12.

  According to the present embodiment as described above, the process of manufacturing the bearing floor plate 20 separately from the rail main bodies 34-1 and 34-2 of the wing rail 16 which has been conventionally required, and further, this process is performed on the rail main body 34 of the wing rail 16. -1 and 34-2 can be eliminated, the number of components in the movable crossing 10 can be reduced, the structure of the movable crossing 10 can be simplified, and the required cost of the movable crossing 10 can be reduced. can do.

Although this embodiment has been described in detail above, this is merely an example.
For example, the number of rail bearings 22 provided on the bearing floor plate 20 can be appropriately changed by changing the size of the rail bearings 22, and the present invention is configured in various forms without departing from the gist thereof. Is possible.

It is a figure which shows the structure of a movable crossing with the support apparatus which is one Embodiment of this invention. It is sectional drawing which shows the principal part of the support apparatus of the embodiment. It is operation | movement explanatory drawing of the support apparatus of the embodiment. FIG. 4 is an operation explanatory diagram showing an enlarged main part of FIG. 3. FIG. 5 is an operation explanatory view of a portion different from the support device of FIGS. 3 and 4 in the movable crossing. It is a figure which shows schematic structure of the branching device of a railroad track. It is a figure which shows one example of the movable crossing as a crossing part in a branching device. It is a figure which shows an example of the conventional support apparatus in the movable crossing part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Movable crossing 11 Bearing apparatus 12 Movable rail 16 Wing rail 20 Bearing floor board 22 Rail receiving bearing 24 Support ball 34-1 and 43-2 Rail main body

Claims (1)

A support device for slidably supporting a movable rail in a movable crossing of a branching device between a reference position and a switching position, and rolling motion by bringing a support ball into contact with the lower surface of the movable rail when the movable rail moves A rail bearing that slides the movable rail, and a bearing floor plate that holds the rail bearing, and the bearing floor plate is integrally formed with the rail body of the wing rail in the movable crossing. The movable rail support device in the movable crossing of the turnout.

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