JPS6020103A - Inspecting method of track line deviation - Google Patents

Abstract

PURPOSE:To manage rationally comfortable ride feeling of a track by outputting a waveform which has been made to pass through a comfortable ride feeling processing filter, against a displacement of the left and right of a rail to an inertia space, and putting stress on adjustment of a line deviation of a place where said waveform is large. CONSTITUTION:For instance, a right and left direction displacing signal of a left rail outputted from a right and left displacement detector 9, and a speed signal outputted from a speed signal generator 17 are inputted to a high-pass filter circuit 13, and the right and left direction displacing signal of the left rail, whose low frequency component has been cut is outputted. On the other hand, a right and left direction acceleration signal of measuring frame, outputted from an accelerometer, and the outputted from the speed signal generator 17 are inputted to an integration circuit 14 twice, and a signal which has been intergrated twice is outputted. Two signals concerned are added by an adder 15, and outputted as the right and left direction displacing signal of the left rail to an inertia space, whose low frequency component has been cut. Also said signal is inputted to a comfortable ride feeling processing circuit 16 together with the speed signal, and a comfortale ride feeling processing line distortion waveform of the left rail is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a track inspection method that is effective in ensuring a good riding comfort for passengers, which is most necessary for track management of high-speed railroads.

Conventionally, as described below, the need for track maintenance was determined by comparing height deviations, road deviations, vehicle body vibrations, etc. measured by track inspection vehicles (hereinafter referred to as inspection vehicles) against track maintenance standards. I was judging. However, as a result of thorough research and analysis of the relationship between track conditions and car body vibration in high-speed regions,
The vehicle body vibration caused by track deviation varies depending on the wavelength of the track deviation, so for rational and economical track management,
It has been decided that it is appropriate to focus on fixing track deviations that have a large impact on vehicle body sway and passenger comfort.

The conventional situation will be described below.

First, the running deviation refers to the horizontal curvature of the rail in the longitudinal direction on the track plane, and the elevation deviation refers to the vertical curvature of the rail. These methods measure the distance between the center of a 10 m long string and the rail to express the amount of deviation, and are generally used to measure track deviation using the Masaya method. Vehicle movement 4,1. is usually expressed in terms of vibration acceleration of the vehicle body. Conventionally, the above-mentioned method for R uses the upper pillar shown in j to be inspected with the same vehicle/f 3 month], and this method of testing 7U for misalignment is based on the inspection vehicle/. 3- A light extractor 3 for measuring deviation of jiM is mounted on a trolley arranged at an interval of I11 at both ends of the string /θm and a center of the string, and the amount of deviation is measured by an arithmetic device 1. The measurement of deviation using this straight Masaya method has the following characteristics: the maximum inspection magnification is 0, 1
lQ-Ji 20 m is 17θ, wave if 'I Om
So it becomes 06ko9. On the other hand, high-speed button
Based on the string iE arrow measurement, 1jl (i There are limits to blind hole measurements, 1', ``I+
Testing new ML strategies to maintain FI] Method 1 is a must-have.

The light snowfall of the present invention is achieved by processing the addition A3 to the commode frame for measuring misalignment. In order to ensure good ride comfort, we consider the degree of influence on lateral acceleration and the influence of lateral acceleration of heavy bodies on ride comfort (known as the ride comfort standard 1!J'). 11 This relates to a method for detecting deviations from k'A, which is characterized by realizing the characteristics of a filter that follows the trajectory of (1 to 1) and j+J of the 11th line, f, and lit mountain gorge.

-ζ 1 to the left and right acceleration of the car body by the criminal I, J's crazy wave people
A b-diagram was obtained. Regarding this, [Su, 4jlM's, J
By knowing the i deviation, riIfig was used to estimate the lateral acceleration of the vehicle when passing through it. In addition, the line between the left and right acceleration of the car body on the railway table and the silver center is set as a ride comfort standard. From the above results, 1Lii
The impact of the crazy waves on the left and right acceleration of the car body is 7 degrees.
]1! The prefecture's lateral acceleration was phantom from the comfort standard.

In addition, in the diagram, the flight speed y/θkm/h is ′, “Jf
Yes. C2) To obtain the output, L(r
11]-! With a small 11-year scale ("large 44") magnification, i! ” (Ci;'l spear+-,+lj
3. E's large n r' = 4 艮, '; then small σ
What, IIQ11'? 'Guo de (-j 7 stone and go neck = 11 = Su: way 17 Shinino: Tsuniki elm Y-Kade prisoner F season-de 1 ← L7 t included -7'r-''-1 Kai-iri 4th edition ← ft, +n 111 shift Q", good. That is, ILS
Go 1-': +ljl +・-4,・] Measure the left-right displacement of the J-ru rail, and
Follow 111h to 1, and set 1'j1 at 4 in filter i, which has the shape of the reciprocal of 3).J' is good. pii;
5t:? l is in front! II', 1rNnhe・ga, l,
I, go enter lJ:5 Js:I/Om's 'l'3
+l! II I'F7 ``c'' to / (] rhi1seno-zo I, J''1゛1 figure, ruru. This 1 to J
Mountain 5 (-ha (・ko opposed) 1 (heart) 1; Self II 1.l
It is called a 1ll filter. i; j of comfort processing fill 1
1 Yu differs depending on the speed of 5 Ray J in Da 1, so in the 1st Mi, it is shown by running speed. Like this :)
The output that fluctuates at t'L is said to have a painful ride quality.

Next, I'll show you the usual way to accomplish this. Fourth
The figure is a plan view of the measuring trolley used in the present invention.
Figure 7 is a plane view of Figure 6.
The left and right displacement of the rail is measured by the accelerometer on the fixed frame 7, as supported by the counterbalance 6th predetermined position 11'1. Detector 9, /θ is taken as fq, and the relative displacement between the measurement frame and the left and right rails/to 7.2, which is given by 1 and 10, is The inertial space obtained by dividing the horizontal addition i and V degrees obtained by an acceleration of 4 g into two squares is the sum of the horizontal displacement of the measurement frame 7, which is theoretically calculated as (d2). The left and right positioning of the rail with respect to the inertial space is excellent.For the left and right displacement of the rail determined in this way, the characteristics of the filter are as shown in Figure 5. By passing through the filter circuit, the ride quality processing J1j deviation can be reduced by 1:
Then a tortoise is formed.

l~kashi-'-tsu, twice:, j portion b'a:i
-In a typical two-time integration circuit, acceleration is included in number 1. (Since the difference component is accumulated by the minute 011 operation, it is possible to realize only a very short time of J"r1 minute, and it is possible to realize a long time + 3:1 constant time like orbit deviation detection. Not suitable for integration.

According to the present invention, by passing through the following processing circuit,
It is possible to eliminate the above-mentioned drawbacks and obtain a waveform that is out of alignment with the riding comfort process.

FIG. 3 is a block diagram of a processing circuit for implementing the present invention. The signal obtained by the left-right displacement detector of the rail is designated as Xa, and the acceleration No. 43 detected by the accelerometer is designated as modified.
The Laplace transform representing a double integral can be expressed as follows.

Y-G 2(s) @(Xa10G1(s)・Revised)...Song/Surface...Song...Song/Song...Song (1) Here,
Ride comfort processing filter characteristics a z (s) total high puff. It is divided into a part G 21 (o) having filter characteristics and a part G 22 (s) other than that.

That is, G2(n)-021(8), G22(
s), equation (1) is Y-021(e)-022(F3)-(Xa+Gl(s
)・g )-(021(s)-X'a+ G 21(s
)・G l(s)-mノ -022(8) ・--
...(2).

Here, if G21(o)-01(s)''G3(s), equation (2) can be expressed as equation (3).

Y-02(r3)・Xa1G 3(s)-,7)・
The Tawara-Tatsu function ()22(15)"""(3)G, No accumulation of

Therefore, in order to make the frequency of the calculation of equation (3) variable using the tonnage circuit, the running wheels of the inspection vehicle ← receive the signal from the installed rotation detector and output the speed signal to each filter circuit. This is a speed signal generator.

Next, the processing circuit will be explained with reference to the block diagram of FIG.

In the case of the left rail, the lateral displacement signal of the left rail based on the measurement frame output from the rail lateral displacement detector 9 and the speed signal output from the speed signal generator are input to the bypass filter circuit 13. , G21(s), and outputs a horizontal displacement signal of the left rail with low frequency components cut off, while outputting a horizontal acceleration signal of the measurement frame outputted from the accelerometer 3 and a speed signal generator/' ) and the speed signal output from G(3).
By outputting a signal that has been integrated twice with a characteristic of By outputting it as a signal and further inputting it to the ride comfort processing circuit/6 together with the speed signal, it is possible to obtain a waveform of the left rail ride comfort processing circuit deviation.

In the case of the right rail, the rail left/right displacement detector 10. Bypass filter circuit/g, adder/9,
Consists of ride comfort processing circuit 20, double integration circuit/4'
and speed signal generator/re are shared.

As described above, according to the present invention, a waveform that has been passed through a ride comfort processing filter is output with respect to the left and right displacement of the rail with respect to the inertial space, and the OI U
By doing so, it is possible to perform rational and economical ride comfort management on IT roads.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a conventional track inspection vehicle, Figure 2 is a relationship diagram, Figure 5 is a ride comfort treatment filter, Figure 6 is a plan view of a measuring trolley used in the present invention, and Figure 7 is a diagram showing a conventional track inspection vehicle. 6 is a sectional view taken along line AA in FIG. 6, and FIG. 3 is a block diagram of a processing circuit for implementing the present invention. l...Conventional track inspection vehicle, λ...Bolly, 3...Conventional running error measurement detector, G...wheel axle, S...axle box, 6...balance Beam, Ri...Measurement frame, g...Accelerometer, Wa, IQ...Rail left and right displacement detector, ll...
・Left rail, 12... Right rail, /3.1g... Bypass filter circuit, lg... Double integration circuit, /S1
/ri...Adder, /A, 20...Ride comfort processing circuit,
lri... Speed Signal Generator Designated Agent Japan National Railways President's Office Legal Affairs Director Tatsu Mika Honma 10% 20% (uauy, 7uA) rqT? (qV'/'fFk
¥'r4'city 0 20 40 60 80 to. Uricho (凰) Funeral 4-Warika 5) Mekuotsupu// /2 M'7Vukae8] Figure

Claims (1)

[Claims] An accelerometer and a rail lateral displacement detector are installed in a measurement frame for measuring the running deviation of a track inspection vehicle, and the rail lateral displacement and speed signal based on the measurement frame are input to a bypass filter circuit. outputs a signal with low frequency components cut off, integrates this signal and the acceleration signal detected by the accelerometer twice to prevent error components contained in the signal from accumulating due to the integration operation, and then evaluates the addition. A method for measuring track deviation, which is characterized by identifying track maintenance points necessary to ensure good riding comfort by passing a circuit through the circuit.