KR100911166B1 - Small curve track testing apparatus for bogie steering performance test - Google Patents

Abstract

The present invention relates to a reduced curve track test apparatus for a railway vehicle steering performance test, the reduced bogie to which the similar law is applied, the reduced curvature track to which the reduced bogie is movable, and the reduced bogie when driving the reduced curvature track. It characterized in that it consists of a performance measurement means for measuring the steering performance and the curve driving performance.

According to the present invention, it is possible to efficiently test the steering performance of a development vehicle during the development of a railway vehicle by using a miniaturized bogie applying the similar law to the steering performance and the curve running performance of the railway vehicle, and the development period and the required cost during the development of the railway vehicle. There is an advantage to reduce.

Rolling stock, law of similarity, steering performance, miniaturized bogie, curved track

Description

Small curve track testing apparatus for bogie steering performance test}

1 is a view illustrating a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention,

2 is a view conceptually illustrating the radius of curvature of a reduced curved track according to the present invention;

3 is a perspective view showing a curvilinear curve according to the present invention;

Figure 4 is a side cross-sectional view showing a reduced curved track according to the present invention,

5 is a view showing the installation state of the vibration measuring means and the transverse lateral pressure measuring means on the reduced curved track according to the present invention,

6 is a view showing the ratchet means provided in the reduced curve track according to the present invention,

7 is a view showing a reduced balance according to the present invention,

8 is a control block diagram of a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention.

*** Explanation of symbols for main parts of drawing ***

100: collapsed balance 110: balance frame

120: wheel 200: reduced curve track

210: lower frame 220: high setting jig

230: rail portion 300: performance measurement means

310: first vibration acceleration sensor 320: strain gauge

330: second vibration acceleration sensor 340: speed sensor

400: driving stop means 410: cradle

420: spring 500: data processing means

510: A / D conversion unit 520: memory unit

530: operation processing unit 540: operation unit

550: display unit

The present invention relates to a reduction curve track test apparatus for a railway vehicle steering performance test, and more specifically, a reduction curve that can efficiently test the steering performance and the curve driving performance of a reduction truck using a reduction truck using the similar law. A track test apparatus.

In general, rolling stock is a large vehicle, and various stability tests are required during its development.

In general, the development of a railway vehicle is subject to a number of trial and error, it takes a lot of time and effort to produce a test bogie of the same size as the actual railway vehicle and a curved track to which the trolley moves.

In addition, if a defect is found during such a test, it has to be re-manufactured or changed, which has a problem that takes a lot of time and money.

Therefore, the situation is required to reduce the development period and cost by using a reduced size test apparatus for reducing the size and production of various types of tests by having the same material and function as the actual railway vehicle.

 Accordingly, the present invention is to improve the problems in the development process of a railway vehicle, the object of the present invention is to reduce the curve track test that can efficiently test the steering performance and the curve driving performance by using a reduction bogie applying the law of similarity To provide a device.

In addition, another object of the present invention to efficiently test the steering performance and curve driving performance when developing a railway vehicle, to provide a curved track test apparatus that can reduce the development period and the required cost.

The present invention for achieving the above object relates to a reduced curve track test apparatus for a railway vehicle steering performance test;

It is characterized by comprising a reduction bogie applying the law of similarity, a reduction curve track in which the reduction bogie is movable, and the reduction bogie comprising performance measuring means for measuring steering performance and curve driving performance when driving the reduction curve track. It is done.

At this time, the reduced curved track; A lower frame installed on the ground, a rail portion formed on an upper portion of the lower frame, the rail portion of which the wheels of the reduction cart contact and a sleeper, and a high and low setting jig for adjusting the height of the rail portion. do.

In particular, the rail portion is formed in a curved shape inclined to a predetermined radius horizontally, the both ends are high and the center portion is characterized by having a low elevation, the high and low setting jig is characterized by consisting of a screw jack or a hydraulic cylinder.

In addition, one end is hinged to the sleeper of the rail portion in order to allow the reduction cart to stop when the rail is stopped, and the other end is provided with a seating groove for supporting the rear end of the reduction cart when the reduction cart is reversed. It is characterized in that the cradle is provided on the lower portion of the cradle further comprises a driving stop means made of a spring elastically supporting the cradle inclined.

The apparatus may further include data processing means for collecting the performance measurement information measured by the performance measurement means and converting the performance measurement information into performance information of the actual vehicle.

At this time, the data processing means; An A / D converter for receiving the performance measurement information from the performance measurement means and converting the digital signal into a digital signal, a memory unit for storing the performance information converted through the A / D conversion unit, and an actual railway using the performance measurement information. It is characterized in that it is composed of a calculation processing unit for converting the performance information of the vehicle, and a display unit for displaying the converted performance information.

On the other hand, the performance measuring means; A first vibration acceleration sensor provided on the rail of the curvilinear curved track for measuring track vibration generated during the movement of the reduced trolley, a strain gauge for measuring the transverse pressure of the track when the reduced trolley moves, and a wheel of the reduced trolley And a second vibration acceleration sensor provided in the bogie frame of the reduced bogie and measuring the centrifugal force of the reduced bogie when the reduced bogie is provided.

With reference to the accompanying drawings, the reduced curve track test apparatus for the railway vehicle steering performance test according to the present invention will be understood by the embodiments described in detail below.

At this time, Figure 1 is a view showing a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention, Figure 2 is a diagram conceptually showing the radius of curvature of the reduced curve track according to the present invention. 3 is a perspective view showing a reduced curved track according to the present invention, Figure 4 is a one-sided cross-sectional view showing a reduced curved track according to the present invention, Figure 5 is a vibration measuring means and a reduced curved track according to the present invention; Figure 6 is a view showing the installation state of the track lateral pressure measuring means, Figure 6 is a view showing the driving stop means provided in the reduced curve track according to the present invention, Figure 7 is a view showing a reduced bogie according to the invention, 8 is a control block diagram of a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention.

First, according to FIGS. 1 and 8, the present invention relates to a reduced curved track test apparatus capable of efficiently testing the steering performance and the curved driving performance of the reduced bogie 100 using the reduced bogie 100 applying the law of similarity. will be.

Such a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention is a reduced curved track (200), a reduced bogie (100) and a reduced curved track that can be moved to the reduction bogie 100 applied to similar law. It consists of a performance measuring means 300 for measuring the steering performance and the curve driving performance of the (200).

In addition, the driving stop unit 400 and the performance measurement information measured by the performance measuring means 300 to allow the reduction cart 100 to stop when driving, the data converted into the actual performance information of the vehicle The processing means 500 is further provided.

At this time, the reduced curved track 200 is reduced as shown in Figure 2 to enable the railroad vehicle to simulate the characteristics of the curve running behavior of the railway vehicle when traveling on the sharp curve of the curve radius (R) When the ratio is φ, it is a structure of a reduced curve track 200 to which the similar law of 1 / φ scale scale is applied.

As an example, the present invention may produce a reduced curved track 200 having a length of 10 m on a 1/5 scale scale on a 250 m curved curve to test a steering mechanism for rolling stock for driving a sharp curve.

Hereinafter, each component of the present invention will be described in detail with reference to FIGS. 3 to 8.

First, the reduced curved track 200 is provided on the lower frame 210 that is supported on the ground, and the upper portion of the lower frame 210 is provided with a rail (120) contacting the wheel 120 of the reduced bogie 100 ( 232 and the sleeper 234 is composed of a high and low setting jig 220 for adjusting the height of the rail portion 230.

At this time, the high and low setting jig 220 is to adjust the rail portion 230 to give a linear, height difference to meet the test purpose of the reduced curved track 200 by the rotation of the screw It is composed of a mechanism that can adjust the height appropriately, such as a height adjustable screw jack or hydraulic cylinder.

On the other hand, the rail portion 230 is formed in a curved shape inclined horizontally by a predetermined radius, and both ends are high and the center has a low elevation difference.

That is, the rail portion 230 is a curved rail portion having a height difference.

At this time, the cross-sectional shape of the rail 232 is installed on the top of the reduced curved track 200, it is natural to refer to the 60kg rail of the standard rail standard KS R 9106 is designed to meet the similar conditions of a certain scale scale Do.

In particular, the gauge was 1435 / φmm, and the rail inclination was 1/20 or 1/40 in consideration of the inclination inclination of the physical rail 232, and the cant gave the height difference between the inner and outer tracks. This can be set.

The similar law of the reduced curved track 200 according to the present invention as follows. In other words, if the ratio to be reduced is 'φ', the size is reduced to 1 / φ scale.

At this time, the material properties and characteristics of the curvilinear curved track 200 is preferably applied to the same material as the rail material to move the actual railway vehicle to maintain the same environment as possible.

Therefore, the radius of curvature R 'of the reduced curved track 200 with respect to the sharp curve of the radius R and the transverse clearance ΔL are calculated by the following equations (1) and (2).

---------------(식1)

--------------- (Equation 1)

---------------(식2)

--------------- (Equation 2)

Where φ is the scale, R is the sharp curve radius (m), R 'is the curvature radius (m) of the reduced curve track, and SP is the length (m) of the reduced curve track.

In addition, when testing the reduced bogie 100, which is a test vehicle on the reduced curved track 200, the free fall method is used to give the traveling speed of the reduced bogie 100.

At this time, in order to implement the maximum speed (V) at the center point of the curve was set to the height difference (H) of the reduced curve track 200.

가 되며 이를 환산한 Full sclae의 실제 차량의 주행속도는 V×φ(m/s)가 된다. In this case, the maximum speed (V) of the reduction cart 100 is

The converted driving speed of the full vehicle is V × φ (m / s).

On the other hand, in the case of the driving test while moving the reduction cart 100 in a free-falling manner, the reduction cart 100 starts at one end of the rail 232 which is a high point, and the center portion is a low point. After repeating a series of reciprocating movement to the other end of the rail 232 is another high point.

Therefore, the driving stop means 400 is provided on the other side of the rail unit 230 to prevent such a reciprocating motion.

The driving stop unit 400 is provided with a cradle 410 protruding upward toward the other side of the rail 232 to the sleeper 234 constituting the rail unit 230.

That is, the cradle 410 is hinged to one end, the other end is formed with a seating groove 412, the lower portion of the spring 420 is configured to be in close contact with the cradle 410 is on the rail portion 230 The other end is installed to be inclined to protrude elastically.

By such a configuration, when the reduction cart 100 starts from one end of the rail unit 230 and moves to the other end via the center, the lower portion of the reduction cart 100 passes the upper surface of the cradle 410.

In this case, the cradle 410 maintains the state supported by the spring 420 and naturally rides over, and when it passes through the cradle 410 freely falls back and moves backward, the rest of the cradle 410 is seated. The rear end of the reduction cart 100 is in close contact with the groove 412 to stop.

On the other hand, when the reduced trolley 100 moves, the track vibration and orbital pressure of the reduced curved track 200 through the performance measuring means 300, and the traveling speed and centrifugal force of the reduced trolley 100 Will be measured.

More specifically, the performance measuring means 300 is a first vibration acceleration sensor 310 is installed on the rail 232 of the reduced curve track 200 to measure the orbital vibration generated when the reduction bogie 100 is moved. And a strain gauge 320 for measuring the lateral pressure of the track rail 232 during movement of the reduced trolley 100, and a bogie frame 110 of the reduced trolley 100, which is added to the reduced trolley during curve driving. The second vibration acceleration sensor 330 for measuring centrifugal force and the speed sensor 340 provided in the wheel 120 of the reduced bogie 100 to measure the traveling speed when the reduced bogie 100 moves. Is made of.

The performance information measured from the performance measuring means 300 is input to the data processing means 500.

At this time, the data processing means 500 receives the performance measurement information through the first and second vibration acceleration sensors 310 and 330, the strain gauge 320 and the speed sensor 340, which are the performance measurement means 300, A / D conversion unit 510 for converting into a signal, a memory unit 520 for storing the performance information converted by the A / D conversion unit 510, and the performance of the actual railway vehicle using the performance measurement information The calculation processing unit 530 converts the performance information, the operation unit 540 operable by the user, and the display unit 550 displaying the converted performance information.

At this time, it is preferable that the data processing means 500 uses a general industrial PC.

Hereinafter, a test example of a reduced curve track test apparatus for a railway vehicle steering performance test according to the present invention will be described in detail with reference to FIGS. 1 to 8.

First, the reduction cart 100 to which the law of similarity is applied is freely dropped at one end position of the reduction curve track 200.

In this case, the reduced cart 100 passes the maximum speed V while passing through the center portion of the reduced curved track 200.

When the reduction cart 100 moves as described above, the moving speed of the reduction cart 100 is measured from the speed sensor 340 installed in the reduction cart 100, and the reduction cart 100 from the second vibration acceleration sensor 330. Centrifugal force is measured.

On the other hand, the orbital vibration generated when the reduction cart 100 is moved from the first vibration acceleration sensor 310 installed on the rail 232 of the reduced curve track 200, and the lateral pressure is measured from the strain gauge 320 do.

Performance measurement information about the speed and centrifugal force of the reduction cart 100 and the vibration and lateral pressure of the track due to the movement of the reduction cart 100 is input to the data processing means 500.

In this case, the data processing means 500 converts the performance measurement information in the form of an analog signal into a digital signal through the A / D converter 510.

In addition, the performance information converted by the A / D converter 510 is stored in the memory unit 520, and in accordance with the processing procedure of the driving program, the arithmetic processing unit 530 uses the performance measurement information of the actual railway vehicle. Converted to the performance information is displayed on the display unit 550 it is possible to confirm the test results.

Although the preferred embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to be substantially equivalent to the embodiment of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

As described above, according to the present invention, there is an advantage in that the steering performance of a developed vehicle can be efficiently tested when the railway vehicle is developed by using a reduced trolley applying a similar law to the steering performance and the curved running performance of the railway vehicle.

In addition, since it is made of the same material as the actual railway vehicle and reduced to a certain ratio, there is an advantage that can reduce the development period and the required cost when developing the railway vehicle.

Claims (10)

Reduced balance using the law of similarity, A curvilinear curved track provided with a rail unit comprising a rail and a sleeper to which the wheels of the collapsed trolley are in contact; Performance measurement means for measuring the steering performance and the curve running performance when the reduction bogie drives the reduction curve track; An A / D converter for receiving the performance measurement information from the performance measurement means and converting the digital signal into a digital signal, a memory unit for storing the performance information converted through the A / D conversion unit, and an actual railway using the performance measurement information. It is composed of a data processing means consisting of a calculation processing unit for converting the performance information of the vehicle, and a display unit for displaying the converted performance information, One end is hinged to the sleeper of the rail and the other end is provided with a cradle that is formed with a seating groove for supporting the rear end of the reduction cart when the reduction cart is retracted, and is provided in the lower portion of the cradle to elastically support the cradle Running stop means made of a spring is provided in the rail portion, The reduced curved track is provided with a lower frame installed on the ground, and the upper portion of the lower frame is formed in a curved shape inclined horizontally by a predetermined radius, the both ends of the rail portion having a high elevation and the center of the lower, and the Consists of high and low setting jig composed of screw jack or hydraulic cylinder to adjust the height of the rail, The performance measuring means is provided on a rail of the curvilinear curved track, the first vibration acceleration sensor for measuring the orbital vibration generated during the movement of the reduced bogie, strain gauge for measuring the transverse pressure of the track during the movement of the reduced bogie, A railway sensor comprising a speed sensor provided on a wheel of a reduced trolley for measuring a moving speed of the reduced trolley, and a second vibration acceleration sensor provided on a bogie frame of the reduced trolley for measuring the centrifugal force of the reduced trolley when the reduced trolley travels. Reduced Curve Track Test System for Vehicle Steering Performance Test. delete delete delete delete delete delete delete delete delete

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