JPH1035492A - Scotch for railway rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability, to prevent dispersion of strength among products so as to surely provide a withstand load for stopping a vehicle, to facilitate machining so as to lower a cost, to reduce weight so as to improve handling ability and workability, to prevent undesirable magnetic/electric influence, and to hardly cause derailment even when a wheel runs onto a scotch. SOLUTION: A scotch is provided with a base part 20 provided with an installation face 21 to be installed on a rail 1 and a supporting part 23 provided with a slanting face 22, which rises from one end side of the base part 20 and faces a rolling face 3 of a wheel 2. In the scotch, whole of which is formed of plastic, a cavity part 30 is arranged between the base part 20 and the supporting part 23 so that the supporting part 23 is squashed when the wheel 2 runs onto the slanting face 22 of the supporting part, 23, while a height of the unsquashed supporting part 23 is set to be larger than a protruding width D of a flange 5 in the wheel 2, and a height of the squashed supporting part 23 is set to be smaller than the protruding width D of the flange 5 in the wheel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway vehicle scotch for restraining wheels on rails when repairing a railway vehicle.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 8, a railway vehicle has wheels 2 for rolling rails 1, and the wheels 2 have rolling surfaces 3 for rolling rails 1. Wheel body 4
And a flange 5 provided on the outer peripheral edge of the wheel body 4 to protrude radially from the rolling surface 3 and to be restricted from moving in the axial direction by the side portion 1 a of the rail 1. For example, in the wheel 2 having a radius R of R = 430 mm, the protrusion width D of the flange 5 is set to D = 26 mm.

Conventionally, as shown in FIG. 8 and FIG. 9, such a scotch S for a railway vehicle is entirely made of wood and has a mounting surface 11 mounted on the rail 1 and one end 10a.
Inclined surface 1 rising from the side and facing rolling surface 3 of wheel 2
2 are formed in a block shape. The height H between the mounting surface 11 and the upper surface 13 of the block body 10 is generally larger than the protruding width D of the flange 5 of the wheel 2, for example, H = 50 to obtain a load resistance for stopping the vehicle. 80
mm. Reference numeral 14 denotes a rod-shaped handle provided on the main body 10. When using the scotch S, one end 10a is connected to the rolling surface 3 of the wheel 2 and the rail 1
The mounting surface 11 is mounted on the rail 1 such that the rolling surface 3 of the wheel 2 faces the inclined surface 12 so as to be inserted in a wedge shape. Alternatively, the scotch S is previously placed on the rail 1 at a predetermined position, and the vehicle is moved so that the rolling surface 3 of the wheel 2 faces the inclined surface 12.

[0004]

However, such conventional scotch S for railway vehicles is made of wood, so that it has poor weather resistance, and is cracked or rusted due to cracking. There was a problem that it was inferior. In addition, since it is formed of wood, there is a variation in strength between products, and when the rail 1 is used at a slope,
There is a problem that the presser foot may be insufficient depending on the product.

In order to solve this, conventionally,
A block body made of a metal such as iron is also widely used. However, this conventional metal scotch S is difficult to process and expensive. Heavy and hard to hold,
Poor workability. Since it is made of metal, there is a problem that, for example, an ATS device or the like may be adversely affected magnetically and electrically. When the scotch S has been used, the scotch S is removed, but the scotch S may be forgotten to be removed. In this case, when the vehicle moves, the wheels 2 may ride on the inclined surface 12 and move to the opposite side. If such a situation occurs, since the height H between the mounting surface 11 and the upper surface 13 of the main body 10 is larger than the projection width D of the flange 5 of the wheel 2, as shown in FIG. The flange 5 is on the side 1 of the rail 1
a, there is a possibility that derailment is likely to occur.

Generally, in the above-mentioned wooden scotch S,
When the wheel 2 rides on the main body 10, it is crushed because the strength is weak. However, since the strength varies between products, the height H between the mounting surface 11 and the upper surface 13 of the main body 10 is reduced. When the protrusion width D of the flange 5 of the wheel 2 is smaller than that, the risk of derailment is reduced, but the height H between the mounting surface 11 and the upper surface 13 of the main body 10 is reduced even if the wheel 2 is crushed. If it is larger than the protruding width D of the flange 5, there is a possibility that derailment is likely to occur like the metal scotch S. Further, in the metal scotch S, the height H between the mounting surface 11 and the upper surface 13 of the main body 10 may be formed to be smaller than the projection width D of the flange 5 of the wheel 2 in advance. In such a case, the smaller the height, the lower the load resistance for stopping the vehicle, which is not preferable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has improved weather resistance, is less susceptible to cracking and decay due to cracking, has improved durability, and prevents variation in strength between products. To ensure that the load-bearing capacity to stop the vehicle can be obtained, and furthermore, the processing is facilitated to reduce the cost, the weight is reduced and it is easy to hold, the workability is improved, and magnetic and electric adverse effects are caused. It is another object of the present invention to provide a scotch for a railway vehicle in which various performances are improved, such as preventing the occurrence of derailment when a wheel rides on the vehicle.

[0008]

In order to achieve the above object, a railway vehicle scotch car according to the present invention is provided on a wheel body having a rolling surface for rolling rails and on an outer peripheral edge of the wheel body. In a railcar scotch for restraining a wheel having a flange that protrudes radially from the rolling surface and is restricted from moving in the axial direction by a side portion of the rail on the rail, the mounting placed on the rail A base portion having a mounting surface, and a support portion provided on the base portion and having a slope rising from one end side of the base portion and facing the rolling surface of the wheel, and entirely formed of plastic. And a cavity is provided between the base and the support so that the support is crushed when the wheel rides on the inclined surface of the support.

[0009] If necessary, the height of the mounting surface of the base portion and the upper surface of the support portion when the support portion is not crushed is formed larger than the protrusion width of the flange of the wheel.
The height of the mounting surface of the base portion and the upper surface of the support portion when the support portion is crushed is formed to be smaller than the projection width of the flange of the wheel. Further, if necessary, the base portion constituting the hollow portion has a configuration in which a concave portion in which a part of the crushed support portion can be immersed is formed in a waist wall portion.

[0010] If necessary, a holding plate facing the side of the rail is vertically provided on the base.
Further, as required, the mounting surface of the base portion has a configuration in which saw-tooth-shaped irregularities are formed. Furthermore, if necessary, a thin tongue piece is provided at one end of the base portion so that the lower part of the wheel can be inserted into an alligator. Further, if necessary, another inclined surface rising from the other end of the base portion is provided on the opposite side of the inclined surface of the support portion. In addition, if necessary, the inclined surface of the support portion is formed with serrated irregularities.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a scotch railcar according to an embodiment of the present invention. Note that the same components as described above are denoted by the same reference numerals and described. As shown in FIGS. 1 to 3, a scotch S for a railway vehicle according to the embodiment is for restraining a wheel 2 of a railway vehicle on a rail 1. A wheel 2 of a railway vehicle has a wheel body 4 having a rolling surface 3 for rolling the rail 1.
And a flange 5 which is provided on the inner peripheral edge of the wheel body 4 and protrudes radially from the rolling surface 3 and is restricted from moving in the axial direction by the side portion 1 a of the rail 1. For example, in the wheel 2 having a radius R of R = 430 mm, the protrusion width D of the flange 5 is set to D = 26 mm.

A scotch S for a railway vehicle according to an embodiment
Is integrally molded in a block shape from plastic such as nylon. The scotch S has a width substantially equal to the width of the rail 1, a base 20 having a mounting surface 21 mounted on the rail 1, and a base 20 provided on the base 20.
And a support portion 23 having an inclined surface 22 that rises from one end 20a of the wheel 2 and faces the rolling surface 3 of the wheel 2. On the opposite side of the inclined surface 22 of the support portion 23, another inclined surface 24 that rises from the other end 20b side of the base 20 is formed. The upper surface 25 of the support portion 23 is formed in a plane parallel to the mounting surface 21 having a small length. That is, the entire Scotch S is formed in a substantially triangular prism shape,
One of the outer surfaces is the mounting surface 21, the other two outer surfaces are the inclined surfaces 22, 24, and the end surfaces are the left and right side surfaces 26, 26 rising perpendicular to the mounting surface 21.

A hollow portion 30 is provided between the base portion 20 and the support portion 23 so that when the wheel 2 rides on the inclined surface 22 of the support portion 23, the support portion 23 is crushed. ing. The hollow portion 30 is formed in a substantially triangular prism shape substantially similar to the substantially triangular prism constituting the whole, and the thickness T of the wall portion of the support portion 23 forming the hollow portion 30 is formed to a uniform thickness. ing. Further, the height H between the mounting surface 21 of the base portion 20 and the upper surface 25 of the support portion 23 when the support portion 23 is not crushed.
a is formed to be larger than the projection width D of the flange 5 of the wheel 2, and the height Hb between the mounting surface 21 of the base 20 and the upper surface 25 of the support 23 when the support 23 is crushed is Is formed so as to be smaller than the protrusion width D of the flange 5. Further, a recess 31 is formed in the wall of the base 20 constituting the hollow portion 30 so that a part of the crushed support portion 23 can be immersed. This recess 31 has a cavity 30
At one end.

On both sides of the base section 20, a pair of holding plates 32 sandwiching the rail 1 are vertically provided so as to face both sides 1a of the rail 1. In addition, a thin tongue piece 33 is provided at one end 20a of the base part 20 so that the lower part of the wheel 2 can be inserted into an alligator. Furthermore, on the mounting surface 21 of the base 20, saw-tooth irregularities 34 are formed. Saw-tooth irregularities 35,
36 are formed. Reference numeral 37 denotes a mounting hole provided in the base 20 to which the handle 38 is detachably fitted.

Therefore, when producing the scotch S for a railway vehicle according to the embodiment of the present invention, for example, it is molded using plastic. In this case, processing is easier than wood or metal, and mass production is possible, so that the cost is significantly reduced. In addition, since the Scotch S is made of plastic, it is lightweight, so that it is easy to hold and can be improved in workability, and has excellent weather resistance, and is improved in durability because it is not easily cracked or broken or rotted. .

When using this scotch S, as shown in FIG. 1, a handle 38 is attached to a mounting hole 37 of the base 20, and the tongue piece 33 is held by the handle 38 and the wheel 2 is rolled. The mounting surface 21 of the base 20 is mounted on the rail 1 so as to be inserted in a wedge shape between the moving surface 3 and the rail 1. Alternatively, the scotch S is previously placed at a predetermined position on the rail 1, and the vehicle is moved so that the rolling surface 3 of the wheel 2 faces the inclined surface 22. In addition, the handle 38 is
It may be attached and detached each time it is used, or may be left attached.

In this state, the wheel 2 is
Is pressed down by contacting the inclined surface 22.
In this case, as shown in FIG. 3, the height Ha of the support portion 23 is formed to be larger than the protrusion width D of the flange 5 of the wheel 2, so that the height is somewhat high, and the load bearing capacity is correspondingly increased. Is reliably secured, and the wheel 2 is securely pressed. Further, when the wheel 2 is pressed to the inclined surface 22 to some extent, the tongue piece 33 enters under the wheel 2, so that the scotch S is pressed, and the pressing of the wheel 2 is also ensured at this point.

Further, since the mounting surface 21 of the base 20 is formed with the saw-toothed unevenness 34, slipping is prevented and the wheel 2 is securely pressed. Furthermore, the base 20
On both sides of the rail 1, the rail 1
, The scotch S hardly falls down to the left and right, so that the wheel 2 is securely pressed. In addition, since it is made of plastic, it hardly has any adverse magnetic or electrical influence on, for example, an ATS device.

In this state, for example, when the use of the Scotch S is finished, the user removes the Scotch S, but sometimes forgets to remove the Scotch S. In this case, when the vehicle moves, as shown in FIGS. , The wheel 2 rides on the inclined surface 22 and moves to the opposite side. In this case, since the hollow portion 30 is provided, the support portion 23 is crushed (FIGS. 4A to 4C).
(G)). Therefore, since the height of the scotch S is reduced, the wheels 2 are less likely to come off the scotch S, and the situation of derailment is suppressed. In particular, as shown in FIG. 3, when the support portion 23 is crushed, the mounting surface 21 of the base portion 20 is crushed.
The height Hb between the support 5 and the upper surface 25 of the support portion 23 is smaller than the protrusion width D of the flange 5 of the wheel 2, so that the lower end 5 a of the flange 5 of the wheel 2 is positioned above the upper surface of the rail 1. Therefore, since the movement of the flange 5 in the axial direction is restricted by the side portion 1a of the rail 1, the situation in which the flange 5 is securely derailed is suppressed.

Further, in this case, since the base portion 20 constituting the hollow portion 30 is formed with a recess 31 in the wall of the waist, in which a part of the crushed support portion 23 can be immersed, the crushed support portion is formed. The protruding portion of 23 can escape to this recess 31, so that it can be reliably crushed and its height can be reduced. Further, since the scotch S is made of plastic, there is little variation in strength between products, so that the protrusion width D of the flange 5 can be reliably reduced by crushing.

In this case, as shown in FIGS. 4A to 4C, the wheel 2 rides on the tongue piece 33 first.
When the tongue piece 33 is pressed by the wheel 2, the wheel 2 is
Since the scotch S is ridden, the scotch S is prevented from being scattered and scattered. Further, since the serrations 35 are formed on the inclined surface 22, the frictional resistance between the rolling surface 3 of the wheel 2 and the inclined surface 22 is increased, and the scotch S is not easily slipped. Scattering is prevented. Furthermore, the support part 2
Since another inclined surface 24 is formed on the opposite side of the inclined surface 22 of FIG. 3, as shown in FIG. 4F to FIG. Since the scotch S is grounded, the situation where the scotch S is flipped and scattered is surely prevented as compared with the case where there is no inclination.

The supporting portion 23 on which the wheel 2 is mounted
Is crushed, but is formed of resin.
As shown in (h), it is easy to return to the original shape by the elastic force, and reuse becomes possible. However, if the vehicle cannot be returned due to a large number of rides, it is desirable not to use it by discarding it.

FIG. 5 and FIG. 6 show a scotch S for a railway vehicle according to another embodiment. The railcar scotch S is formed substantially in the same manner as described above, but is partially formed differently from the above. First, the base 20
A plurality of holes 40 are formed from the mounting surface 21 side. As a result, the amount of plastic used is reduced, and costs are reduced. Also, distortion due to shrinkage during molding is absorbed, and twisting and bending are prevented. Further, the inclined surface 22 of the support portion 23 and another inclined surface 24 on the opposite side are formed in the same shape, and the inclined surfaces 22 and 24 and the upper surface 25 of the support portion 23 are formed.
Saw-tooth irregularities 41 are formed over the entire area. Further, recesses 42 into which the crushed support portion 23 can be immersed are formed at both ends of the hollow portion 30, and the length thereof is longer and larger than the above-described recess 31. Therefore, even if the vehicle is installed in the right and left directions incorrectly, the wheel 2 can be pressed by another inclined surface 24 and slippage due to the unevenness 41 can be reliably prevented.

Further, a pair of holding plates 32 provided on both sides of the base 20 are detachable. That is, a hook-shaped engaging portion 43 is formed on the holding plate 32, and an engaging concave portion 44 with which the engaging portion 43 is engaged is formed on the base portion 20. 4
Reference numeral 5 denotes a projection formed on the holding plate 32 for positioning.
Reference numeral 6 denotes a fitting hole formed on the base 20 and into which the projection 45 is fitted. Thereby, for example, when there is a so-called pit line made of concrete adjacent to the rail 1, for example,
If 2 cannot be mounted on rail 1,
The presser plate 32 can be removed.
The degree of freedom in the installation of the device is increased.

[0025]

Next, a scotch S according to an embodiment will be described. Scotch S according to the example used nylon 6 (1013B) as plastic. Assuming that the protrusion width D of the flange 5 of the wheel 2 is 26 mm, as shown in FIG. 2, when the height of the mounting surface 21 of the base 20 and the upper surface 25 of the support portion 23 is not crushed, Ha = 50mm
When the support 23 was crushed, Hb was set to 24 mm. In the experiment, with a wheel load of 3,700 Kgf, Hb =
The support portion 23 was crushed while 24 mm was secured. By the way, it is conceivable that the scotch has a structure without a hollow portion and its height is previously formed smaller than the projection width D of the flange 5 of the wheel 2. However, the load for stopping the vehicle is reduced, which is not preferable. In the embodiment, an increase in load resistance of 500 kgf or more can be obtained as compared with the case where the height is simply 24 mm.

In the above embodiment and examples,
The scotch S is integrally formed, but is not necessarily limited to this. For example, as shown in FIG. 7, the upper part 50 having the cavity 30 above the support part 23 and the base part 20 is provided. Are separated from each other, and the engaging projection 52
Are formed on the lower part 51 which is the lower side of the support part 23 and the base part 20, and the engagement concave part 53 with which the engagement convex part 52 is engaged is formed. May make the upper part 50 detachable, in which case the support portion 2
If 3 is crushed, the upper part 50 can be replaced, increasing the utilization efficiency. Also, the type of plastic is not limited to those described above, and may be appropriately changed, for example, using FRP resin, nylon 66, hard rubber, or the like. Further, it goes without saying that the inclination angle of the inclined surface 22, the size of the hollow portion 30, the hardness of the plastic, and the like may be appropriately determined depending on the conditions of the wheel 2.

[0027]

As described above, according to the scotch for railway vehicles of the present invention, since the whole is made of plastic, it can be easily processed and mass-produced as compared with conventional wood and metal. Significant cost reduction can be achieved. Also, because it is made of plastic, it is lightweight,
Therefore, it is easy to handle because it is easy to hold, so workability can be improved accordingly, and weather resistance is excellent, and it is hard to crack, break or rot, so durability is greatly improved. Can be. Furthermore, since it is made of plastic, it is possible to prevent magnetic and electrical adverse effects on, for example, an ATS device.

Since a hollow portion is provided between the base portion and the support portion so that the support portion is crushed when the wheel runs on the inclined surface of the support portion, for example, when the scotch is used, Even if you forget to remove the scotch, and the vehicle moves and the wheels ride on the slope and move to the opposite side, the support parts will be crushed and the height of the scotch will be reduced, so the wheels will be It is difficult to come off the scotch, and it is possible to suppress the situation of derailment. In particular, since it is made of plastic, there is little variation in strength between products, and therefore,
The height can be reliably reduced by crushing.

Also, the height of the mounting surface of the base portion and the upper surface of the support portion when the support portion is not crushed is formed to be larger than the protrusion width of the flange of the wheel, and the base when the support portion is crushed. If the height of the mounting surface of the part and the upper surface of the support part is formed to be smaller than the protrusion width of the flange of the wheel, the height is formed larger than the protrusion width of the flange when not crushed. As a result, the height increases, so that the load resistance can be ensured and the wheel can be reliably pressed.When the support portion is crushed, the lower end of the flange of the wheel is positioned above the upper surface of the rail. Since the flange is not positioned and the movement of the flange in the axial direction is restricted by the side of the rail, the situation in which the flange is derailed can be surely suppressed.

Further, in the case where the base constituting the cavity forms a recess in which a part of the crushed support portion can be immersed in the wall of the arm, the protruding portion of the crushed support portion is formed by the recess. , And can be reliably crushed to reduce the height. Furthermore, in the case where a holding plate is provided to hang from the base portion and face the side portion of the rail, the scotch is hard to fall down to the left and right, and the wheel can be surely pressed. In addition, in the case where the saw-toothed unevenness is formed on the mounting surface of the base portion, it is possible to prevent a situation in which the wheel slides even when pressed by the wheel, and thus the wheel can be reliably pressed.

If a thin tongue is provided at one end of the base so that the lower part of the wheel can be inserted into the crocodile, when the wheel is pressed, the tongue enters under the wheel. In this respect, it is also possible to secure the pressing of the wheel. Also, when the wheel rides on the support, the wheel rides on the tongue first, so the wheel rides on the support with the tongue pressed down by the wheel,
By this riding, it is possible to prevent a situation in which the scotch is flipped and scattered.

Further, when another inclined surface rising from the other end of the base portion is provided on the opposite side to the inclined surface of the support portion, the wheels that have been run on gradually contact the rail surface on the opposite side. Therefore, it is possible to prevent a situation in which the scotch is flipped and scattered, as compared with the case where there is no inclination and the step is large. Also, if the support surface has serrated surfaces, the frictional resistance between the rolling surface and the inclined surface of the wheel will increase, making it difficult for the scotch to fly and prevent flying. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a scotch film for a railway vehicle according to an embodiment of the present invention, together with a use state.

FIGS. 2A and 2B are diagrams showing a scotch railcar according to an embodiment of the present invention, wherein FIG. 2A is a side view and FIG. 2B is a front view.

FIG. 3 is a cross-sectional view showing an operation of the scotch railcar according to the embodiment of the present invention.

FIG. 4 is a process chart illustrating an operation of the scotch railcar according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a scotch film for a railway vehicle according to another embodiment of the present invention.

FIG. 6 is a side view showing a scotch film for a railway vehicle according to another embodiment of the present invention.

FIG. 7 is an exploded side view showing a scotch film for a railway vehicle according to another embodiment of the present invention.

FIG. 8 is a perspective view showing an example of a conventional railcar scotch together with a state of use.

FIG. 9 is a view showing the operation of a conventional railcar scotch.

[Explanation of symbols]

 S Scotch for railway vehicles 1 Rail 1a Side 2 Wheel 3 Rolling surface 4 Wheel body 5 Flange D Flange projection width 20 Base 20a One end 20b Other end 21 Mounting surface 22 Inclined surface 23 Supporting portion 24 Different inclined surface Reference Signs List 25 upper surface 26 side surface 30 cavity 31 concave portion Ha height when not crushed Hb height when crushed 32 holding plate 33 tongue piece 34, 35, 36 serrated unevenness 37 mounting hole 38 handle 40 hole 41 serrated unevenness 42 concave portion 43 engaging portion 44 engaging concave portion 45 protrusion 46 fitting hole

(72) Inventor Makoto Soma 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Akihisa Endo 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Inside the Railway Company (72) Inventor Keisuke Kosai 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Tadao Maeda 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Inside Railway Company (72) Inventor Hiroshi Yato 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Masaaki Otaki 5-23-12 Shimoigusa, Suginami-ku, Tokyo Jiki Kogyo Co., Ltd. Inside the company (72) Inventor Shoichiro Yamamoto 5-23-12 Shimoigusa, Suginami-ku, Tokyo Inside Jikiko Co., Ltd.

Claims (8)

[Claims] 1. A wheel body having a rolling surface for rolling a rail, and is provided on an outer peripheral edge of the wheel body, protrudes radially from the rolling surface, and is restricted from moving in the axial direction by a side portion of the rail. A scotch line for a railway vehicle for restraining wheels having flanges on the rails, a base having a mounting surface to be mounted on the rail, and a base provided on the base, A support portion having an inclined surface which rises from one end side and has a slope facing the rolling surface of the wheel. The support portion is crushed when the wheel runs on the slope of the support portion. A scotch for a railway vehicle, wherein a hollow portion is provided between the base portion and the support portion. 2. The method according to claim 2, wherein the height of the mounting surface of the base portion and the upper surface of the support portion when the support portion is not crushed is formed larger than the projection width of the flange of the wheel. 2. The scotch for a railway vehicle according to claim 1, wherein the height of the mounting surface of the base portion and the upper surface of the support portion at the time is smaller than the projection width of the flange of the wheel. . 3. The railway according to claim 1, wherein a recessed portion in which a part of the crushed support portion can be immersed is formed in a wall of a base portion constituting the hollow portion. Scotch for vehicles. 4. The scotch for a railway vehicle according to claim 1, wherein a holding plate facing the side of said rail is suspended from said base. 5. The scotch for a railway vehicle according to claim 1, wherein the mounting surface of said base portion is formed with serrated irregularities. 6. The scotch for a railway vehicle according to claim 1, wherein a thin tongue is provided at one end of the base so that the lower part of the wheel can be inserted into an alligator. 7. An inclined surface rising from the other end of the base portion on the opposite side of the inclined surface of the support portion. The scotch for a railway vehicle as described. 8. The apparatus according to claim 1, wherein said support portion has a saw-toothed unevenness formed on an inclined surface thereof.
Or the scotch for railway vehicles described in 7.