JP4738765B2 - Tongleil material for railway turnout - Google Patents

Description

  The present invention relates to a material rail (hereinafter simply referred to as an S rail) used for a railway turnout tongleil, and in particular, an S that can be easily rolled and can be efficiently processed into a tongleil. Related to rails.

In the railway branching section, a Tongleil that can be converted (contacted and separated) with respect to the basic rail is used, but this Tongleil has a cross-sectional shape of the head that gradually approaches the tip end side in the longitudinal direction (the side that combines with the basic rail). It is formed to be thin. In general, when producing Tongrel, an S-rail having a predetermined cross-sectional shape is first obtained by rolling, and then this is cut and forged.
The arrangement of the conventional basic rail and the tongrel is shown in FIGS. 4 and 5, which is also disclosed in, for example, Patent Document 1. 4A and 4B show examples of 80S rails. FIG. 4A shows a state in which the Tongleil 2 combined therewith is separated from the basic rail 1, and FIG. 4B shows a state in which both rails are bonded. FIG. 5 shows an example of a 70S rail, where (a) shows a separated state and (b) shows an adhered state. The basic rail 1 is fastened from the outside of the gauge by some fastening device 3 (shown in FIG. 4 and 5 is a rail brace).
JP-A-6-240605 (FIG. 1)

However, the basic rail and the Tongleil in the conventional railroad branch and the S rail as a material have the following problems.
(1) As can be seen from FIG. 4 and FIG. 5, there is not much difference in height between the basic rail and the Tongrel, and the difference in level between the Tongrel bottom and the basic rail bottom is small. Fastening means can not be provided inside the rail, and as a result, the basic rail is easy to move (stretch) in the longitudinal direction, and the basic rail is slightly turned back (the side of the rail that is not fastened by receiving lateral force) In order to prevent this phenomenon, it was necessary to install a larger rail brace outside the gauge than a normal fastening device. Further, in the entire range where the basic rail and the Tongrel are adhered, the two are almost completely in contact with each other, so that there is a possibility that the conversion of the Tongrel may be hindered by any minute foreign matter. Further, in the range where the basic rail and the Tongler are bonded and the surrounding area, the bottom of both the basic rail and the Tongrel is cut in order to avoid mutual interference in the cross-sectional direction (in the case of the 80S rail). ) Or the back side of the Tongrel has to be cut (for 50S or 70S rails). In particular, when the bottom surface of the Tongrel is cut, the Tongrel becomes unstable and difficult to stand on its own, resulting in extra resistance when the Tongrel is converted.

(2) Since Tongrel has a structure that is not sufficiently fastened due to its function (a function that can be converted), when lateral pressure (train load in the left-right direction) is applied, it is likely to twist and easily return. . In particular, such a phenomenon is remarkable when the tongrel is not self-supporting as described above.
(3) Since the bottom of the basic rail and the bottom of the tongrel interfere structurally over a considerable range in both the top and bottom and left and right directions, the amount of cutting when the S rail is cut into a tongrel increases, resulting in production costs. It led to a disadvantage.
(4) According to the above (3), the adhesion side of the tongue rail with the basic rail does not interfere with the basic rail, and therefore it is necessary to shorten the amount of the bottom portion of the tongue rail. Therefore, the S rail is desirably a left-right asymmetric rail at the bottom from the viewpoint of cross-sectional efficiency. Actually, as shown in FIGS. 6A to 6C, the conventional 50S or 70S rail has an asymmetric bottom, but at the same time, the abdominal portion of the rail is also asymmetric, so that the rolling workability is poor. On the other hand, since the conventional 80S rail is completely symmetrical, the rolling workability is excellent, but there is a problem that the amount of cutting when cutting into a tongrel is large and the cross-sectional efficiency is poor.

  The present invention has been made to solve the above-mentioned problems of the prior art, and has an efficient cross-section that makes rolling workability and workability at the time of forging of the Tongrel root as good as possible and requires less cutting amount. By using the S-rail, it is possible to reduce the total production cost from rolling the S-rail to processing into a tongrel, and when used as a tongrail, it is possible to fasten the basic rail from the inside of the gauge, so that it is self-supporting. It is an object to obtain a tongrel which can secure the property and has excellent reversibility.

The gist of the present invention for solving the above problems is as follows.
(1) Cross-sectional shape obtained by cutting the material rail when the material rail height is 20 to 50 mm lower than the basic rail height in the rail that is the material of the Tongrel that is installed in the railroad branching device so as to be freely attached to and detached from the basic rail. A fastening means having a mounting height inside the gauge of the basic rail can be installed between the bottom surface of the bottom of the tongue rail and the top surface of the bottom of the basic rail when the asymmetrical tongrel head is bonded to the basic rail head. The height of the rail that produces a sufficient level of difference, the width of the material rail abdomen is 40 mm or more, the step between the material rail head and abdomen is 5 mm or more, and the cross-sectional shape of the material rail head and abdomen is symmetrical Tongleil material for railway turnouts.
(2) The tongrel material for a railway turnout according to (1), wherein the cross-sectional shape of the bottom of the material rail is asymmetrical.
(3) The tongrail material for a railway turnout according to (1), wherein the cross-sectional shape of the bottom of the material rail is symmetrical.
(4) A railway branch characterized by using the Tongrel material according to any one of (1) to (3) and cutting only the side of the head and the bottom contacting the basic rail to obtain the Tongrel. A method for producing dexterous tongrel.

The effects expected from the S-rail according to the present invention are as follows.
(A) Since the height is sufficiently lower than that of the prior art, the basic rail can be fastened from the inside of the gauge, the movement of the basic rail is prevented, and a large fastening device such as a rail brace is not necessary. In addition, the foreign matter is less likely to enter between the Tongleil and the basic rail, making it difficult to convert. In addition, the basic rail and the tongrel rebound phenomenon can be almost eliminated.
(B) By eliminating the basic rail bottom and tongrel up-and-down cutting, the manufacturing cost of both rails can be reduced, and the cross-sectional efficiency of the S rail is improved. In addition, the self-supporting property of Tongrel can be sufficiently secured.
(C) Minimizing the amount of protrusion at the bottom of the S-rail on the side that is bonded to the basic rail and minimizing the amount of cutting at that portion, greatly reducing the tongler cutting amount and reducing manufacturing costs Can be made.
(D) By increasing the width of the rail abdomen as much as possible, the rigidity of the tongrel itself is increased and the counter-returning property is improved.
(E) Since the rail head and abdomen cross-sectional shapes are symmetric, the rollability of the asymmetric rail can be improved.
Furthermore, in another state of the S-rail of the present invention, the bottom portion is also left-right symmetric, so the workability at the time of forging of the Tongrel root is improved.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
FIG. 1 shows a preferred example of the cross-sectional shape of the S rail 4 according to the present invention, which is composed of a rail head portion 5, a rail abdomen portion 6 and a rail bottom portion 7 from the top. The S rail 4 is obtained by roughly rolling, intermediate rolling and finish rolling a steel slab through a plurality of perforating mills or perforating mills and a universal mill.
First, the S rail 4 according to the present invention is characterized in that the height is sufficiently lower than that of the basic rail. For example, although the basic rail 1 is shown by a one-dot chain line in FIG. 1, the height of the S rail 4 is about 20 mm to 50 mm lower than that of the basic rail 1. Incidentally, the height of the conventional Toggle rail S rail is at most about 5 mm to 20 mm lower than the basic rail. For example, when the basic rail is a JIS 60 kg rail, the height of the basic rail is 174 mm, so the S rail of the present invention is 154 to 124 mm.
The S rail 4 of the present invention does not necessarily have to be lower by about 20 mm to 50 mm than the basic rail 1, and more specifically, it can be obtained by processing the S rail as shown in FIG. When the Tongrel 2 is bonded to the basic rail 1, a level difference sufficient to install a fastening means (bolt fastener, etc.) inside the gauge of the basic rail 1 between the bottom bottom surface of the Tongrel bottom and the top surface of the basic rail bottom. (Space) It is necessary to set the rail height so as to generate C. For example, in the JIS 60 kg rail, the height of the bottom portion is 30.1 mm and the height of the end portion is 12 mm. Therefore, when the height position of the top of the head is aligned, the bottom surface of the S rail of the present invention is more than the basic rail fastening device. It is preferable to set the height to be above. Moreover, it can be said that the height of the S rail 4 is a rail height that does not require cutting in the vertical direction of the bottom of the rail when it is a tongrel.

How much step C should be provided between the bottom surface of the tongue rail and the top surface of the basic rail is affected by the mounting height of the fastening means inside the basic rail 1 gauge used in practice. Therefore, the height of the S rail 4 does not interfere with the fastening means on the inner side of the gauge of the basic rail 1 considering that the height of the S rail 4 is preferably as high as possible in the sense that the Tongleil is directly combined with the basic rail 1 and receives the train load. Within the range, it is preferable to make it as high as possible. It is not necessary to make this step C larger than necessary to make the S rail height too low.
The formation of the step (space) C makes it possible to fasten the basic rail 1 from the inside of the gauge, increase the resistance of the basic rail to move forward, and require extra fastening means (such as a race brace) from the outside of the gauge. The sex was canceled. In addition, this space formation does not hinder the conversion operation even if a certain amount or less of foreign matter is interposed between the rails, and eliminates the need for cutting the basic rail and the bottom of the tongrail, thereby contributing to the reduction of the rail manufacturing cost. In addition, by eliminating the need to cut the bottom of the Tongrel, the self-supporting property of the Tongrel is enhanced.

  Next, it is desirable that the width of the rail abdominal portion 6 of the S rail 4 according to the present invention be as large as possible so that it is close to the width of the rail head portion 5. For example, it is desirable that at least a width of 40 mm, which is the abdominal width of the conventional 80S rail, be provided on the S rail abdomen of the present invention. Of course, the abdomen maximum width of the S rail 4 does not exceed the width of the rail head. This is because if the abdomen width is larger than the head width, the caliber of the rolling roll is not applied and the hole rolling becomes difficult. Desirably, the step between the head and the abdomen should be 5 mm or more. By increasing the width of the rail abdomen, it is possible to increase the strength and improve the returnability of the tongrel.

  Moreover, as for the S rail 4 which concerns on this invention, it is desirable to make the cross-sectional shape of the rail head part 5 and the abdominal part 6 left-right symmetric. This can improve the rolling processability of the asymmetric S-rail. Since the rollability is good if the cross-sectional shape of the material is symmetric, in the present invention, only the rail bottom, which will be described later, is made asymmetric and the rest is made symmetric so as not to disturb the rollability as much as possible. In addition, by making the rail abdominal width symmetrical, the occurrence of bending during rolling is suppressed, which helps to reduce the cost required for correction.

Furthermore, the S rail 4 according to the present invention is characterized in that the cross-sectional shape of the rail bottom portion 7 is asymmetrical. That is, one of the rail bottom portions 7 (the side that adheres to the basic rail when made into a tongrel) has a minimum amount of protrusion, and the amount of cutting at the bottom portion is minimized. Moreover, by limiting the cutting range of the bottom to the protruding portion of the bottom, the rail can stand up even at the Tongler minimum cross section, and the wheel load (train load) can be transmitted downward in a balanced manner. Further, in the past, cutting to a certain range behind the rail bending point was essential, but in the present invention, cutting behind the rail bending point is unnecessary. As a result, the total length of the tongrel cutting can be made equal to or equivalent to the head cutting length, the cutting stroke required for the planer is minimized, and the cutting performance of the long tongrel is improved. In addition, it is a necessary condition that the amount of protrusion at the bottom of the S-rail on the adhesion side can ensure the amount of protrusion at which the rail fastening device can be applied on the rear side of the Tongle rail. Although it depends on the type of fastening device, the amount of jump is preferably 20 mm or more.
For the other side of the bottom surface, the amount of springing is relatively increased. From the standpoint of rollability, it is desirable that the mass of the head and the bottom is approximately the same, and the thickness of the bottom is restricted by both the rolling equipment and the fastening device. preferable. Moreover, the stability of the tongrel can be improved by increasing the amount of protrusion on the side not bonded to the basic rail.

  FIG. 3 shows a cross section viewed from the axial direction of the tongrel tip when the tongrel manufactured based on the S rail according to the present invention is used for an actual branching portion. As shown in the figure, since the Tongrel 2 is obtained by cutting an S-rail that is sufficiently lower than the basic rail 1, even when the Tongrel is bonded to the basic rail, the bottom of the Tongrel and the bottom of the basic rail are A sufficient space can be formed without bonding. Therefore, in addition to the fastening device 8 for the bottom of the basic rail 1 outside the gauge, another fastening device 9 can be installed for the bottom of the basic rail 1 inside the gauge, and stabilization of the basic rail can be ensured. . At the same time, the formation of this space has prevented fine foreign matter from being caught. Although the fastening device 8 or 9 in FIG. 3 is conceptually shown, there are various mechanisms, types, sizes, and the like, and there is no particular limitation.

  FIG. 7 shows another aspect of the present invention in which the cross-sectional shape of the rail bottom 7 is symmetric. By making the head and abdomen symmetrical, the bending during rolling can be further reduced. In addition, if left and right are symmetrical, cutting can be performed without changing the direction of the rail according to the right and left directions, and work efficiency can be improved. Further, the S rail of this aspect is cut into a tongrel as shown in FIG. At this time, in order to connect smoothly with the rear rail, the root part of the Tongrel is forged to the same cross-sectional shape as the rear rail as shown in FIG. 9, but both the S rail and the rear rail have a bilaterally symmetric cross section. As a result, work efficiency during forging is greatly improved. By making the bottom of the S rail symmetrical, the bottom cutting amount on the side that adheres to the basic rail when it is made tongrel increases by the amount that the bottom spreads, but to complete the tongrel from the S rail. This is not a problem in terms of the total processing amount.

It is a figure which shows the cross-sectional shape of the S rail which concerns on this invention by contrast with a basic rail. It is a figure which shows the adhesion | attachment condition of the tongue rail and the basic rail which were obtained by processing the S rail shown in FIG. It is sectional drawing of the front end side of the branching device which uses the Tongleil based on the S rail of this invention. It is an example of a branching device based on an 80S rail, (a) is a state in which the basic rail and the Tongrel are separated, and (b) is a diagram showing a state in which both rails are bonded. It is an example of a branching device based on a 70S rail, (a) is a state in which the basic rail and the Tongrel are separated, and (b) is a diagram showing a state in which both rails are bonded. The conventional S rail cross-sectional shape is shown, (a) is a 50S rail, (b) is a 70S rail, (c) is an 80S rail. It is a cross-sectional shape of another aspect of the S rail of the present invention. It is the figure which showed a mode that a tongrel was cut from the S rail of this invention, (a) is a side view, (b) is a top view. It is a figure which shows the cross-sectional shape of another form of the S rail of this invention by contrast with a basic rail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Basic rail 2 Tongue rail 3 Fastening device (rail brace) 4 S rail 5 Rail head 6 Rail abdomen 7 Rail bottom 8 Basic rail gauge outer side fastening device 9 Basic rail gauge inner side fastening device

Claims (4)

In the rail that is the material of the Tongleil that can be installed on and away from the basic rail in the railway turnout,
When the material rail height is 20-50 mm lower than the basic rail height and the cross-sectional shape obtained by cutting the material rail is bonded to the basic rail head , the bottom surface of the bottom of the tongue rail and the basic rail bottom Between the upper surface and the rail height that produces a level difference sufficient to install the fastening means with the mounting height inside the gauge of the basic rail,
The width of the material rail abdomen is 40 mm or more and the step between the material rail head and the abdomen is 5 mm or more,
Tongleil material for railway turnouts, characterized in that the cross-sectional shapes of the material rail head and abdomen are symmetrical.   The cross-sectional shape of the bottom portion of the material rail is left-right asymmetrical.   The cross-sectional shape of the bottom of the material rail is left-right symmetric.   The production of a tongrel for a railway branching device using the tongrel material according to any one of claims 1 to 3, wherein the tongrel is obtained by cutting only the side of the head and the bottom contacting the basic rail. Method.

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