JPH0210363B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for measuring and recording the size of geometric defects in railway tracks.

[Conventional technology and its issues]

Continuously measuring and recording the magnitude of track geometric imperfections along the length of the track is useful for diagnosing track condition, planning short-, medium- and long-term maintenance operations, and , which is very important in managing the maintenance work.

Conventionally, devices that continuously measure and record the size of track defects along the length of the track use sensors installed on vehicles moving on the track.
Continuously measure the size of geometric defects in the track along its length and display the measurement results with the length of the railway track on the ordinate and the size of the defect on the abscissa There is a device that records continuously on recording paper.

In the above device, the measurement results are displayed on the recording paper in the first
As shown in the figure, the size of the defect is recorded in an envelope-like graph along the length of the trajectory.

However, it is not possible to instantly determine from a recording sheet such as the one shown in FIG. 1 how many defects are present in a certain section of track that require maintenance.

Therefore, it requires skill to quickly formulate a maintenance plan according to defects from the recording paper as shown in FIG. 1, and there are problems in that it is difficult to manage the maintenance work.

Therefore, the present invention aims to provide a device that can clearly see in which section of the track there are defects that require maintenance.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a measuring and recording device for geometric defects on railway tracks.
It was constructed as follows.

That is, the device of the present invention includes a vehicle 3 moving on a railway track 2, and a sensor 4 installed on the vehicle 3 for measuring the size of a geometric defect in the railway track 2.
, detectors 6 and 7 that detect the amount of movement of the vehicle 3 on the railway track 2, and the sensor 4 and the detectors 6 and 7.
an encoder 5 that digitizes the size of a geometric defect on the railway track measured for each predetermined unit length of the railway track 2 by the encoder 5; and an encoder 5 that stores the measured values digitized by the encoder 5. a storage device 9; a classification device 10 that classifies the measured values stored in the storage device 9 based on grade categories; and a classification device 1.
A counter 11 counts measured values classified by 0 for each grade category within a predetermined section of the railway track 2, and a predetermined count number or less among the counts counted for each grade category by the counter 11. A discriminator 12 for deleting items, and a count number for each grade division after deleting items below a predetermined count number by this discriminator 12, the ordinate is a predetermined section of the railway track 2, and the abscissa is a predetermined section of the railway track 2. A recording device 13 that records on a recording paper 14 on which grade classifications are displayed.
It consists of

〔Example〕

As shown in FIG. 2, the device according to the present invention has the following features:
A measurement unit 1 that continuously measures the size of defects such as irregularities on the surface of the track 2 along the track 2, and a processing circuit 8 that processes data measured by the measurement unit 1.
It consists of

The measurement unit 1 includes a vehicle 3 moving on a track 2, a sensor 4 installed on the vehicle 3 that measures the size of a geometric defect in the track 2, and a sensor 4 that measures the amount of movement of the vehicle 3 on the track 2. Detectors 6 and 7 for detecting, and an encoder 5 for digitizing the size of the geometric defect on the track 2 measured every predetermined unit length of the track 2 by the sensor 4 and the detectors 6 and 7. It is composed of:

The detectors 6 and 7 are operated by gears 7 fixed to the wheels of the vehicle 3 for every fixed distance X
For example, the pulse generator 6 generates one pulse every 100 mm.

From the encoder 5, the moving distance of the vehicle 3
For each, the size of the defect on track 2 is obtained as a digital value, and this obtained data is transferred to the ordinate of vehicle 3.
If we express the movement distance of , that is, the length from the origin of trajectory 2, and the abscissa Oa as the size of the defect, we get:
A graph as shown in FIG. 1 is drawn. Curve C in this graph shows changes in the size of defects on the running surface of the rail 2 shown in FIG.

Data of measurement values continuously obtained from the encoder 5 is stored in a storage device 9.

The measured value data stored in the storage device 9 is classified into grades by the classification device 10. In this example, as shown in the abscissa of FIG.
If the measured value exceeds the grade 1 line, it is grade 2, if it exceeds the grade 2 line, it is grade 3, and so on.

Next, the graded measured values are divided into sections, where the section in which a predetermined number of measured values are obtained is defined as an section, for example, in this example, the section from 0 to 0.1, the section from 0.1 to 0.2, and the section from 0.2 to 0.3. For example, if we consider the interval in which 10 measured values are obtained as one interval, how many measured values belong to grade 1, how many measured values belong to grade 2, and so on, within that interval?
For each grade classification, the counter 11 counts the number of measured values belonging to that grade. for example,
In the interval from 0 to 0.1 in Figure 1, there are 10 measured values, the measured value belonging to grade 1 is 0, the measured value belonging to grade 2 is 3, the measured value belonging to grade 3 is 2,
There are 2 measured values belonging to grade 4, 3 measured values belonging to grade 5, and 0 measured values belonging to grades 6 to 9.

The counts counted according to the grade in each predetermined section as described above are sent to the recording device 13 via a discriminator 12 that deletes counts below the predetermined count. In the embodiment, the count number 0 is deleted, and the count number 1 may be deleted.

In the recording device 13, as shown in FIG.
The ordinate k is a measurement interval including a predetermined measured value, the abscissa a is a class division, and the count after deletion by the discriminator 12 is recorded on the recording paper 14.

Looking at the recording paper in Figure 3, the count number 0 has been deleted. For example, in the 0.5 section, there is one defect of grade 6, five defects of grade 7, and four defects of grade 8. That can be determined immediately.

〔Effect of the invention〕

By looking at the recording paper above, you can quickly determine how many defects of the graded size are included in a certain section of the track, and the recording paper will not display defects below a predetermined count number. , so it is easy to judge the trajectory characteristics for each section.

Therefore, according to the present invention, it is possible to see at a glance how many defects that require maintenance are present in a certain section of the track, so it is possible to quickly formulate a maintenance plan for the railway track. This has the effect of making maintenance work easier to manage.

[Brief explanation of drawings]

FIG. 1 is a graph showing changes in the size of defects on the running surface of railway tracks along the length of the track; FIG. 2 is a block diagram of the device according to the present invention;
FIG. 3 is a diagram showing a part of the recording paper of the apparatus according to the present invention. 1...Measurement unit, 2...Track, 3...Vehicle, 4...
...Sensor, 5...Encoder, 6...Pulse transmitter, 7...Gear, 8...Processing circuit, 9...Storage device, 10...Classification device, 11...Counter, 12
... Discriminator, 13 ... Recording device, 14 ... Recording paper.

Claims (1)

[Claims] 1 A vehicle 3 moving on a railway track 2, a sensor 4 installed on this vehicle 3 that measures the size of a geometric defect in the railway track 2, and a sensor 4 that measures the amount of movement of the vehicle 3 on the railway track 2. Detectors 6 and 7 for detecting, and an encoder for digitizing the size of the geometric defect on the railway track measured for each predetermined unit length of the railway track 2 by the sensor 4 and the detectors 6 and 7. 5
, a storage device 9 that stores the measured values digitized by the encoder 5, a classification device 10 that classifies the measured values stored in the storage device 9 based on grade categories, and a classification device 10 that stores the measured values digitized by the encoder 5; A counter 11 counts the classified measurement values for each grade category within a predetermined section of the railway track 2, and among the counts counted by the counter 11 for each grade category, those below a predetermined count number are deleted. The discriminator 12 and the count number for each class division after deleting those below a predetermined count number by the discriminator 12 are displayed with the predetermined section of the railway track 2 on the ordinate and the class division on the abscissa. recorded paper 14
A recording device 13 for measuring and recording geometric defects on railway tracks.