KR101553939B1 - Driving test rail for mountain vehicle - Google Patents

Abstract

A rail for a mountain railway vehicle running test is disclosed. A rail for a mountain railway vehicle running test according to an embodiment of the present invention includes a first rail portion arranged to form an upward slope, a second rail portion arranged to form a downward slope, a first rail portion And a tilt adjusting device for adjusting a tilt of at least one of the first rail, the second rail, and the third rail.

Description

[0001] DRIVING TEST RAIL FOR MOUNTAIN VEHICLE [0002]

The present invention relates to a rail for a mountain railway vehicle running test.

As the reliance on transportation by railway vehicles increases, the demand for transportation of railway vehicles increases day by day. In order to meet the increasing transportation demand, the speed of the railway vehicle must be increased and the number of times of operation must be increased.

In addition, consumers who use transportation need more and more rapid transportation, and as a result, the improvement of the service speed is perceived as an improvement of the service to the customer, so that it does not fall behind in the service (speed) Inevitably, it is necessary to improve the running speed of the railway vehicle.

As the importance of railway vehicles becomes more important, studies on the accident prevention of railway cars are actively pursued. Especially, the terrain features of the country with many mountainous terrain are very frequent on the slope terrain of the railway car. Also, it is possible to prevent derailment in the lateral direction when the railway car runs on the slope terrain, Research to prevent this problem is also required. For example, when a railway vehicle runs on an inclined terrain, if the slope rushes over a certain angle, or when the speed of the railway vehicle falls below a certain speed, there is a possibility that an upward derailment of the railway vehicle may occur.

Therefore, in the case of a mountain railway vehicle that mainly runs on mountainous terrain, it is necessary to pay more attention to the stability of the driving than the case of a general railway vehicle. In addition, since the inclination of the slope may vary from time to time due to characteristics of the mountainous terrain, the stability of the running of the mountain railway vehicle at various slopes should be ensured.

However, there are a lot of trial and error at the time of development of a real railway vehicle. However, there is a limit to making a test carriage having the same size as a real railway car and a rail on which the carriage moves. In addition, if a defect is found in such a test, it is very inefficient since it is necessary to re-manufacture them or change the configuration.

Therefore, rails for running test, which have the same materials and functions as those of actual railway cars, and which can reduce the size thereof to a certain ratio and observe the running condition of the railway vehicle, are used.

Japanese Patent Application Laid-Open No. 10-2012-0138031

Embodiments of the present invention are intended to provide a rail for a running test for a mountain railway vehicle to be mainly driven in an actual slope terrain.

In addition, since the mountain railway vehicle travels on an inclined terrain of a slope that varies from time to time, it is intended to provide a rail for a mountain railway vehicle running test in which the tilt can be easily adjusted.

A rail for a mountain railway vehicle running test according to an aspect of the present invention includes a first rail portion arranged to form an upward slope, a second rail portion arranged to form a downward slope, And a tilt adjusting device for adjusting a tilt of at least one of the first rail, the second rail, and the third rail.

The third rail portion may be horizontally disposed.

The first rail portion and the second rail portion are each rotatably coupled to both ends of the third rail portion. The tilt adjusting device is disposed below the first rail portion, and the one end portion and the other end portion A first stretching unit that is rotatably coupled to a mounting surface on which the first rail and the rail for driving the mountain railway vehicle are mounted and adjusts the inclination of the first rail through elongation and contraction of the length, And a second elastic unit disposed below the rail portion and having one end and the other end rotatably coupled to the second rail and the mounting surface, respectively, and configured to adjust a tilt of the second rail through a length- . ≪ / RTI >

In addition, the first rail and the second rail can be extended or contracted in length.

One end of the first rail and one end of the second rail are pivotally coupled to both ends of the third rail, respectively, and the tilt adjustment device is configured such that the other end of the first rail is rotated A second sliding unit rotatably coupled to the other end of the second rail and slidable in a horizontal direction, a second sliding unit coupled to the third rail and disposed under the third rail, A third sliding unit slidable in a horizontal direction, a second sliding unit disposed below the first rail, having one end and the other end rotatably coupled to the first rail and the first sliding unit, respectively, A first elastic unit arranged to regulate the inclination of the first rail through the first rail and the second rail, A second elastic unit rotatably coupled to the second sliding unit and adjusting the inclination of the second rail part through a length expansion and contraction and a second elastic unit arranged below the third rail part, And a third elastic unit coupled to the third sliding part and the third sliding unit, the third elastic unit adjusting the height of the third rail part by extending and contracting the length thereof.

As the inclination of any one of the first and second rails is adjusted by any one of the first and second elastic units, And the other of the first and second rails is moved in one direction while the horizontal arrangement is maintained by the expansion and contraction of the first sliding unit and the movement of the third sliding unit in one direction, The second sliding unit is moved in one direction by the extension of the length of the other one of the second elastic units and the movement of the second sliding unit in the one direction so that the same slope as the slope of any one of the first elastic unit and the second elastic unit Lt; / RTI >

One end of the first rail and one end of the second rail are pivotally coupled to both ends of the third rail, respectively, and the tilt adjustment device is configured such that the other end of the first rail is rotated A second sliding unit rotatably coupled to the other end of the second rail and capable of sliding in a horizontal direction, and a second sliding unit disposed under the third rail, And a third stretching unit having one end coupled to the third rail and adjusting the height of the third rail through a length expansion and contraction.

In addition, the third rail portion is horizontally disposed, and as the height of the third rail is adjusted by the third stretch unit, the inclination of each of the first rail portion and the second rail portion is adjusted to be the same, The first rail portion and the second rail portion can be moved away from or close to each other.

The third stretchable units are provided in plural and spaced from each other along the longitudinal direction of the third leg part, one end of each of the plurality of third stretchable units is rotatably coupled to the third leg part, So that the inclination of the third rail can be adjusted.

Also, as the inclination of the third rail is adjusted by the plurality of third elastic units, at least one of the first and second rails may be moved in a horizontal direction while the inclination is adjusted.

In addition, the first rail, the second rail, and the third rail may have different slopes.

Further, a rack gear portion provided on at least a part of the first rail, the second rail and the third rail and engaging with a pinion gear provided on a mountain railway vehicle may further include a rack gear portion.

According to the embodiments of the present invention, it is possible to provide a rail for a running test for a mountain railway vehicle which is mainly driven in an actual slope topography.

Further, it is possible to provide a rail for driving test of a mountain railway vehicle in which the inclination can be easily adjusted.

1 is a schematic view of a rail for a mountain railway vehicle running test according to an embodiment of the present invention;
2 is a view showing a state in which a slope of a rail for a mountain railway vehicle running test of FIG. 1 is adjusted.
3 is a schematic view of a rail for a mountain railway vehicle running test according to another embodiment of the present invention.
4 is a view showing a state in which a slope of a rail for a mountain railway vehicle running test shown in Fig. 3 is adjusted.
5 is a schematic view of a rail for a mountain railroad vehicle running test according to another embodiment of the present invention.
6 is a view showing a slope of a rail for a mountain railway vehicle running test of FIG. 5 being adjusted;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, well-known functions or constructions are not described in detail since they may obscure the subject matter of the present invention.

The rail for a mountain railway vehicle running test according to the embodiments of the present invention includes a first rail portion arranged to form an upward slope, A third rail located between the first rail and the second rail, at least one of the first rail, the second rail and the third rail, And a tilt adjusting device for adjusting the tilt of the tilt adjusting device.

Since the rails for running the mountain railway vehicle can include both the upward slope section and the downward slope section, the tilt of the slope can be adjusted, so that the running test of the mountain railway vehicle can be performed at various slopes.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1st Example

1 is a schematic view of a rail 100 for a mountain railway vehicle running test according to an embodiment of the present invention. As shown in the figure, the rail 100 for running a mountain railroad vehicle according to the present embodiment includes a first rail 110, a second rail 120, a third rail 130, And the tilt adjustment device may include a first stretching unit 140 and a second stretching unit 150. With such a configuration, the rail 100 for running the mountain railway vehicle according to the present embodiment can provide a slope section on the left and right and a horizontal section in the middle.

The first rail 110 may be arranged to form an upward slope and the second rail 120 may be arranged to form a downward slope. To this end, the third rail part 130 disposed between the first rail part 110 and the second rail part 120 is horizontally disposed and can be supported by the support part 160. One end of the support frame 160 may be connected to the third rail 130 and the other end of the support frame 160 may be connected to the mounting surface 1 on which the rails 100 for driving the mountain railroad vehicle are installed .

One end of each of the first rail part 110 and the second rail part 120 may be respectively coupled to both ends of the third rail part 130 and may be rotatable. One end of the first rail part 110 is hinged to one end of the third rail part 130 and the other end of the second rail part 120 is connected to the third rail part 130 And the other end is hinged (132). The first rail 110 and the second rail 120 can be pivoted about the hinge joints 131 and 132 through the hinge joints 131 and 132 as will be described later.

In the present embodiment, the tilt adjusting device may include a first stretching unit 140 and a second stretching unit 150. [ The first and second stretching units 140 and 150 can adjust the inclination of the first and second leg portions 110 and 120 through the elongation and contraction of the length. In the present embodiment and other embodiments, the stretch unit is exemplified by a hydraulic cylinder. However, the present invention is not limited to this, and the present invention is not limited to the above-described embodiments, and any structure that adjusts the inclination of the rail portion by extending or contracting the length may be included in the scope of the present invention. For example, a screw jack, etc.) belong to the scope of the present invention.

Specifically, the first elastic unit 140 may include a piston 141 and a body 142. The piston 141 is accommodated in the body 142, and can move forward and backward as required. This first stretchable unit may be disposed under the first rail 110 and one end and the other end may be pivotally coupled to the first rail 110 and the mounting surface 1, respectively . The second elastic unit 150 may include the piston 151 and the body 152, like the first elastic unit 140. The second elastic unit 150 may be disposed under the second rail 120 and one end and the other end may be rotatably coupled to the second rail 120 and the mounting surface 1, have.

2 is a view showing a state in which the slope of the rail 100 for driving the mountain railroad vehicle of FIG. 1 is adjusted. The second elastic unit 150 is not operated for a clear comparison so that there is no change in the slope of the second rail 120 and only the first elastic unit 140 is operated so that the slope of the first rail 110 Of the population.

In order to reduce the inclination of the first rail 110, as shown in FIG. 2, the first stretch unit 140 disposed under the first rail 110 is stretched to form the first rail 110 Away from the third rail 130. One end of the first rail 110 is hinged at one end of the third rail 130 so that the first rail 110 is rotated clockwise about the hinge coupling 131 So that the tilt can be reduced.

The rotation of the first rail part 110 and the inclination of the first rail part 110 are controlled such that both ends of the first elastic unit 140 are rotatably engaged with the first rail part 110 and the installation surface 1 , 146). In this embodiment, this portion is also implemented by the hinge couplings 145 and 146. [

Although not shown, the inclination of the second reamer 120 without the inclination adjustment can be adjusted in the same manner as the first reamer 110 by adjusting the length of the second elastic unit 150.

2, when the inclination of the first rail 110 is adjusted to a small value, the length of the first rail 110 itself is determined. In this case, The other end of the first rail 110 can be levitated from the mounting surface 1. [ Therefore, the first rail 110 according to the present embodiment can be provided so as to be capable of extending and contracting in length. For example, a configuration similar to that of a cylinder, such as the expansion units 140 and 150, may be adopted, or various configurations for extending and retracting other multi-stage booms, screw motors, and the like may be adopted. 2, the inner piston 111 is drawn out as necessary, so that the mountain railway vehicle can smoothly enter the first rail 110 along the piston 111 . 2, the same problem arises in the case where the inclination of the first rail 110 is largely adjusted. In this case, the length of the first rail 110 is shortened to make smooth inclination adjustment You can secure it. Although not shown, the second rail 120 may also be capable of being expanded and contracted in length.

On the other hand, a mountain railway vehicle generally can be provided with a pinion gear (not shown) for running on an inclined terrain, and a rack gear portion engaging with the pinion gear can be provided on the ground. That is, the wheel of the mountain railway vehicle is rotated by receiving the driving force from the driving shaft, and the pinion gear provided on the driving shaft is also engaged with the rack gear portion so that the mountain railway vehicle can smoothly run the sloped terrain. In other words, the pinion gear and the rack gear portion provide a kind of friction force to the mountain railway vehicle so that the mountain railway vehicle can climb more easily when climbing the slope terrain, and slipping can be prevented when descending the slope terrain.

Accordingly, the rail 100 for running the mountain railroad vehicle according to the present embodiment may further include the rack gear portions 2 and 3. In this embodiment, the third railing 130 disposed at the center maintains the horizontal arrangement, so that no rack gear is provided in the third railing 130. However, as shown in the figure, The rack gears 2 and 3 are provided in the first rail 110 and the second rail 120 to improve the reliability of the driving performance test result of the mountain railway vehicle by creating an environment similar to the actual driving environment of the mountain railway vehicle .

Second Example

3 is a schematic view of a rail 200 for a mountain railway vehicle running test according to another embodiment of the present invention. In this embodiment, the first rail 210, the second rail 220, and the third rail 230 may be included as in the first embodiment. The two rail parts 220 are arranged so as to form an upward slope and a downward slope, respectively, and the third rail part 230 arranged in the middle can maintain a horizontal arrangement.

One end of the first rail 210 and one end of the second rail 220 may be rotatably coupled to both ends of the third rail 230, as in the first embodiment.

The first sliding unit 270, the second sliding unit 280, and the third sliding unit 290 may include a first sliding part 210, a second sliding part 230, The second rail part 220 and the third rail part 230, all of which can slide in the horizontal direction. The first sliding unit 270 may include a plate portion 275 and a wheel portion 276 provided below the plate portion 275. In this case,

The other end of the first rail 210 may be pivotally coupled 271 with one end of the plate portion 275 of the first sliding unit 270. Since the plate portion 275 is rotatably supported by the first rail 210 and the first rail 210 because the first rail 210 and the first rail 210 and the plate portion 275 are rotated relative to each other, (271). ≪ / RTI > Likewise, the other end of the second rail 210 may be rotatably coupled (281) with one end of the plate portion 285 of the second sliding unit 280.

The third sliding unit 290 is disposed below the third rail 230 and may be connected to the third rail 230 by the third elastic unit 260 or 265 as described later.

One end and the other end of the first elastic unit 240 may be disposed under the first rail 210 and the first elastic part 240 may be disposed between the first rail part 210 and the plate part 275 of the first sliding unit 270. [ (245, 246). Similarly, the second elastic unit 250 may be disposed below the second rail 220, and one end and the other end of the second elastic unit 250 may be connected to the second rail 220 and the plate portion of the second sliding unit 280 285, respectively.

The inclination of the first rail 210 and the second rail 220 can be adjusted by adjusting the lengths of the first and second elastic units 240 and 250, same.

The third stretching unit 260 may be provided on the plate portion 295 of the third sliding unit 290. The lower end of the body 262 may be coupled to the plate portion 295 and the upper end of the piston 261 may be coupled to the third rail 230, Lt; / RTI > The height of the third rail 230 can be adjusted by extending or contracting the length of the third elastic unit 260. Also, as in this embodiment, a plurality of third elastic units 260 and 265 may be provided.

4 is a view showing a state in which the inclination of the rail 200 for driving test of the mountain railway vehicle according to the present embodiment is adjusted. As shown, when the inclination of the first and second rails 210 and 220 is reduced, the height of the third rail 230 may be lowered.

Specifically, the rail 200 for running a mountain railway vehicle according to the present embodiment adjusts the inclination of any one of the first rail 210 and the second rail 220, Can also be determined. By adjusting the inclination of the first rail 210, for example, as shown in FIG. 4, the length of the first stretch unit 240 is shortened to adjust the slope of the first rail 210 to be small . The first rail 210 is rotatable clockwise as a whole. To enable this, the other end of the first rail 210 is rotatably engaged with the plate 275, And both end portions of the first elastic unit 240 are also rotatably engaged with the first rail 210 and the plate portion 275, respectively. When the first rail part 210 rotates clockwise, the third rail part 230 connected to the first rail part 210 by the hinge coupling 231 can be moved to the right with reference to FIG. 4 . At this time, in order to maintain the horizontal arrangement of the third rail 230, the length of the third stretching units 260 and 265 may be shortened. The second rail 220 may also be moved in the right direction together with the third rail 230 in the right direction. In this process, since the height of the third rail 230 is lowered, the second rail 220, which is pivotally coupled 232 with the third rail 230, can be turned counterclockwise, And may have the same slope as the first rail 210. Here, the fact that the first rail 210 and the second rail 220 have the same inclination does not mean that the absolute values of the inclination angles are the same, and the directions of the inclination are the same. That is, the first rail 210 and the second rail 220 may be symmetrically arranged with respect to each other, which can be seen in FIGS. 3 and 4.

Meanwhile, in the present embodiment, the rack gear portions 2 and 3 may be provided in the first and second rails 210 and 220 forming a predetermined slope, as in the first embodiment.

Third Example

5 is a schematic view of a rail 300 for a mountain railway vehicle running test according to another embodiment of the present invention. The first rail part 310 and the second rail part 320 may include the first rail part 310 and the third rail part 330. The first rail part 310 and the second rail part 320 may be formed separately from each other. And the second rail 320 are disposed to form upward slopes and downward slopes, respectively. However, the third rail 330 disposed at the center may be horizontally disposed, but may have a specific slope by the tilt adjustment device.

One end of the first rail 310 and one end of the second rail 320 are rotatably engaged with the opposite ends of the third rail 330 in the same manner as in the first and second embodiments, ).

As in the second embodiment, the first sliding unit 370 and the second sliding unit 380 correspond to the first rail 310 and the second rail 320, respectively, May be possible. The other end of the first rail part 310 may be rotatably engaged with the one end of the plate part 375 of the first sliding unit 370. Likewise, the other end of the second rail 310 may be pivotally coupled 381 with one end of the plate portion 385 of the second sliding unit 380.

The third stretching unit 360 may be provided on the mounting surface 1. The lower end of the body 362 may be coupled to the mounting surface 1 and the upper end of the piston 361 may be coupled to the third rail 330, Lt; / RTI > The height of the third rail 330 can be adjusted by extending or contracting the length of the third elastic unit 360.

For example, in the case of extending the length of the third stretchable unit 360, the third rail portion 300 may be bent in the same direction as the third rail portion 300, The first rail part 310 and the second rail part 320 which are rotatably engaged at the both ends of the third rail part 330 can be brought close to each other. In other words, the first rail 310 rotates counterclockwise as a whole, and the first sliding unit 370 moves to the right, whereby the slope of the first rail 310 can be increased. Likewise, the second rail 320 is rotated counterclockwise as a whole, and the second sliding unit 380 is moved to the left, whereby the slope of the second rail 320 can be increased.

The inclination of the first rail 310 and the second rail 320 are simultaneously reduced so that the first rail 310 and the second rail 320 are inclined at the same time, The portions 320 may be distant from each other.

Meanwhile, as shown in FIG. 3, a plurality of third elastic units 360, 365 may be provided. The plurality of third stretching units 360 and 365 may be spaced from each other along the longitudinal direction of the third rail part 330. The upper end of each of the third and fourth stretch units 360 and 365 may be pivotally coupled to the third rail 330. At this time, if the lengths of the third and fourth stretch units 360 and 365 are different from each other, the third rail 330 may also have a slope. To illustrate this, FIG. 6 is presented.

6 is a view showing a state in which a slope of a rail 300 for a mountain railway vehicle running test according to the present embodiment is adjusted. As shown in the drawing, if the length of the left extensible and contractible unit 360 of the plurality of third extensible units 360 and 365 is shortened and the length of the right extensible unit 365 is maintained, The third rail 330 may also be upwardly inclined when it is seen that the first rail 310 is inclined to the left with respect to the second rail 330 to form an upward inclination.

The first rail 310, which is pivotally coupled 331 to the third rail 330 by the rotation of the third rail 330 as shown in the drawing, can pivot clockwise, The first sliding unit 370 which is rotatably engaged with the first rail 310 can be moved to the left. Thus, the first rail 310 and the third rail 330 may have the same directional inclination, but their inclination may be different from each other.

On the other hand, in FIG. 6, it is exemplified that the length of the third stretchable unit 365 on the right side is not expanded or contracted, so that there is no change in the second leg 320.

According to the mountain railway vehicle driving test rail 300 according to the present embodiment, it is possible to implement inclined terrains having various slopes than those of the previous embodiments, so that a variety of results can be obtained through one running test.

As in the first and second embodiments, the first and second rails 310 and 320 forming the upward inclination or the downward inclination may be provided with the rack gear portions 2,3. Unlike the first and second embodiments, the third rail part 330 disposed at the center may have a specific inclination. Thus, in this embodiment, the third rail part 330 is provided with the rack gear part 4 .

As described above, according to the rail for driving test of the mountain railway vehicle according to the present invention, which can be implemented through various embodiments, the running test of the mountain railway vehicle can be performed by simulating an inclined terrain similar to an actual mountainous terrain, It is possible to generate reliable driving test results useful for designing / developing a vehicle.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that various changes, modifications, or substitutions may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Mounting surface 2, 3: Rack gear part
100: Mountain railroad vehicle running test rail 110: 1st railway
120: second rail part 130: third rail part
140: first stretching unit 150: second stretching unit
160: Support

Claims (12)

A first rail disposed to form an upward slope;
A second rail disposed to form a downward slope;
A third rail disposed between the first rail and the second rail; And
A tilt adjusting device for adjusting a tilt of at least one of the first rail, the second rail and the third rail;
Lt; / RTI >
And the third rail portion is horizontally disposed. delete The method according to claim 1,
Wherein the first rail portion and the second rail portion are rotatably coupled to both ends of the third rail portion,
The tilt adjusting device includes:
Wherein the first rail and the second rail are rotatably coupled to a mounting surface on which the first rail and the rail for driving the mountain railway vehicle are mounted, A first stretching unit for adjusting a tilt of the first rail; And
A second rail disposed below the second rail and rotatably coupled to the second rail and the mounting surface at one end and the other end, 2 stretching unit;
Rail for railroad vehicle test, including. The method of claim 3,
Wherein the first rail portion and the second rail portion are each capable of extending and contracting in length. The method according to claim 1,
One end of the first rail and one end of the second rail are pivotably coupled to both ends of the third rail,
The tilt adjusting device includes:
A first sliding unit rotatably coupled to the other end of the first rail and slidable in a horizontal direction;
A second sliding unit rotatably coupled to the other end of the second rail and slidable in a horizontal direction;
A third sliding unit disposed below the third rail and slidable in a horizontal direction;
Wherein the first rail and the second sliding unit are disposed on the lower side of the first rail and are disposed under the first rail and have one end and the other end rotatably coupled to the first rail and the first sliding unit, A first stretchable unit;
Wherein the first and second sliding units are disposed under the second rail and are rotatably coupled to the second rail and the second sliding unit at one end and the other end, respectively, and the slope of the second rail is adjusted A second stretchable unit; And
And a third sliding part which is disposed below the third rail and has one end and the other end respectively coupled to the third rail and the third sliding unit, A stretching unit;
Rail for railroad vehicle test, including. 6. The method of claim 5,
As the inclination of any one of the first and second rails is adjusted by any one of the first and second stretch units, the third rail part is extended in the length direction of the third stretchable unit And the other of the first and second rails is moved in the one direction while the horizontal arrangement is maintained by the expansion and contraction and the movement of the third sliding unit in one direction, And the second sliding unit is moved in the one direction by the extension of the length of the other one of the elastic units and the movement of the second sliding unit in the one direction so that the mountain having the same slope as the slope of any one of the first elastic unit and the second elastic unit Rail for railroad vehicle test. A first rail disposed to form an upward slope;
A second rail disposed to form a downward slope;
A third rail disposed between the first rail and the second rail; And
A tilt adjusting device for adjusting a tilt of at least one of the first rail, the second rail and the third rail;
Lt; / RTI >
One end of the first rail and one end of the second rail are pivotably coupled to both ends of the third rail,
The tilt adjusting device includes:
A first sliding unit rotatably coupled to the other end of the first rail and slidable in a horizontal direction;
A second sliding unit rotatably coupled to the other end of the second rail and slidable in a horizontal direction; And
A third stretching unit disposed below the third rail and having one end coupled to the third rail and adapted to adjust the height of the third rail through elongation and contraction;
Rail for railroad vehicle test, including. 8. The method of claim 7,
Wherein the third rail portion is horizontally disposed and the height of the third rail portion is adjusted by the third stretch unit so that the slopes of the first rail portion and the second rail portion are adjusted to be the same, 1 rail and the second rail portion are distant or near to each other. 8. The method of claim 7,
The third stretchable unit may include a plurality of third stretchable units disposed apart from each other along the longitudinal direction of the third leg,
Wherein one end of each of the plurality of third telescopic units is rotatably coupled to the third racetrack and the length of each of the plurality of third telescopic units is varied to adjust the tilt of the third ramp, Rail for railroad vehicle test. 10. The method of claim 9,
Wherein at least one of the first and second rails is moved in a horizontal direction while the inclination is adjusted as the inclination of the third rail is adjusted by the plurality of third elastic units, rail. 11. The method of claim 10,
Wherein the first rail, the second rail, and the third rail have different slopes. 12. The method according to any one of claims 1 to 11,
Further comprising a rack gear portion provided on at least one of the first rail portion, the second rail portion and the third rail portion and engaging with a pinion gear provided on a mountain railway vehicle.

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