JPS61250501A - Apparatus for measuring deflection of third track - Google Patents

Abstract

PURPOSE:To make it possible to accurately detect and measure the installation state of a third track with good efficiency, by detecting and confirming the state of the third track in a non-contact manner. CONSTITUTION:The outputs of an outside sensor 13, a central sensor 14 and an inside sensor 15 being the element sensors for forming a third track measuring sensor 12 are respectively amplified by an amplifier 21 and successively selected by a selector 22 to be converted to digital signals from analogue signals by a converter 23 while the digital signals are guided to an operation circuit 24 to detect and measure a spaced-apart distance X and a deflection height Y. The rotary pulse of a range finding wheel 16 is picked up by a range finding sensor 18 to be integrated by a counter 26 and the integrated value is introduced into an operation circuit 24 to be converted to the actual distance from a start point. When the detected and measured deflection exceeds a predetermined range, the degree thereof and the distance from the start point are printed and recorded by a printer 25.

Description

[Detailed description of the invention] Industrial application field: This invention is aimed at improving the tracking accuracy of the third rail, which is installed at a fixed interval from the electric first running rail, in a third rail type railway. This relates to the equipment to be verified.

Background of the invention: Train or electric engine I11. It is well known that in order to simply supply the required power, even if subdivided by AC/DC or voltage, it can be broadly divided into overhead line system and 3' rail system. This is jPshi. The third rail system is mainly used for subways or roads set under similar conditions.
Electricity is supplied to the electric car by a collector shoe attached to the bogie of the electric car rubbing against a third rail installed at a constant distance from the running rail. The third rail is often of the top-acting type where the tread and collector shoe rub against each other, and since the collector shoe is also attached to the bogie of the electric car, its effective operating range is different from pantographs etc. in the overhead wire system. must be extremely localized. Therefore, it corresponds to such a collector shoe. The operating surface of Article IE341 must maintain a constant positional relationship with the running rail within a range that can absorb the deviation from the wheel center due to the collector shoe being attached to the bogie axle box.

Prior art: It is important to maintain a predetermined mutual positional relationship between the running rail and the $3 rail while maintaining a certain tolerance range, in order to ensure the normal operation of electric vehicles. There is a concern that the predetermined mutual positional relationship will change due to wear or cant, unevenness of sludge, etc., as well as wear of the 43 rails, so the deviation must be constantly measured.

Conventionally, this inspection has been carried out using an inspection vehicle that passes along the running rail, and an arm that has the function of measuring between the third rail and the running rail, and a function that measures the height difference ft between the Ad rail working surface and the running rail tread. Extend the arm with the arm, attach it to the tip of each arm, and make the T-contactor, for example, a rotating roller, contact the side surface of the third rail and trace it, depending on the degree of extension of the arm, between 14t-1 and the same. A widely used method is to make a rotating roller contact the operating surface of the third rail in a transmission manner and trace it, and check the height difference based on the degree of elevation and elevation of the arm. The method of inspection is 1. It is dangerous to write while the power is being transmitted to the IG3 rail, and furthermore,
A collector shoe and 6; within a range that does not impede current collection;
$3=[LLL/D Baset, which is a mixture of oil and abrasion powder that is applied to prevent wear, adheres,
When each of the above-mentioned contacts passes through that portion, false deviations are measured, and these have become a problem that must be solved.

Purpose of the invention: The present invention is considered to be a solution to the current situation, and focuses on the fact that the problems that occurred in the case of the conventional method are derived from the dependence on the contact method that follows the third rail, By verifying the condition of the third rail without contacting it, the installation condition of the third rail can be efficiently and accurately inspected without the conventional lateral root restraints regarding the relationship between measurement work and direct train movement. 1
Halo for the purpose of providing vertical measuring equipment.

Structure and Embodiments of the Invention: Hereinafter, one embodiment of the present invention will be described based on the drawings.A reference arm (B) as shown in FIG. 1 is attached to an inspection vehicle or trolley. This reference arm σ force is the running rail (
1) It has a length that extends in a direction that is always parallel or at a constant angle to the line segment of (6 steps of 1γ + IITt-) or the axle of the electric wagon, and covers the working surface of the third rail < 3). ing.

And on the base end side of the reference arm (b), there is a distance measuring wheel 9 that violently contacts and transmits power to the inside of the running rail gorge (1) near the third rail (3) to be measured and the tread surface. At the same time, a distance measuring sensor (to) for detecting the number of rotations is attached via a bracket qη. Furthermore, the reference arm (6
) is attached with a third rail sensor (6) having an outer sensor 〇, a center sensor (to), and an inner sensor (t) as each element sensor to form a constant deviation section. What is shown in FIG. 1 shows an embodiment applied to the third rail of the top-acting type, but if the third rail is of the top-acting type, it can be handled by mounting the third rail sensor upward.

Next, each amplifier 2D amplifies the signals sent from the outer sensor (to), the central sensor (X4), and the inner sensor (to) that make up the 3411L sensor (6), and each of these amplified signals is A selector (a) that sequentially selects, a converter (2) that converts the selected analog signal into a digital signal, and an arithmetic circuit (c) are connected to each other, and the signal from the ranging sensor (to) is also connected to the counter.・Connect to the arithmetic circuit through -.Then, the various measured values obtained from the arithmetic circuit are printed and recorded using a printer (c) as needed, as shown in Figure 2. A calculation recording section 4 as shown in FIG.

In the third rail deflection measuring device of the present invention, the length of the reference arm (3) and the estimated height from the running rail (1) tread surface are set to the required values depending on the setting conditions for laying the 31A rail for the running rail. It is equipped with IIC so that it can be installed as shown in the figure, or it can be moved out from the inspection vehicle as needed and retracted.

For example, when the iron/track is standard gauge, the height 1) of the working surface of the third rail (3) based on the tread of the running rail (1) is 140 mm, and the running rail is (1)
If the separation pressure M(X) of the center line of the third orbit (3) based on the inner surface of
Based on 321 nI, the center line of the third rail is set appropriately above the working surface so that it can be measured including the total deviation of 131'l fe, and for the separation distance (3), the proximity limit is -tsn% and the separation limit is +15 cod. As shown in Figure 3(a) and φ), the total deviation was 30ffti.
The outer sensor (to), the center sensor q→, and the inner sensor (to) forming the L-strip sensor (in this example, there are three elements, but depending on the aspect of element sensor D, there may be less than three or four or more elements. good.

), set the center sensor (b) so that it coincides with the third rail center line.

Functions and effects of the invention: When the device for measuring the deviation of the third rail of the present invention configured as described above is actually used, the value provided by the accurate sheet arrangement of article 3a is Base 1 of height ζ0
1. Take out the reference arm (6) from the detection gear body and measure only the amount of deviation using the above reference value as the absolute length so that the overall deviation f: is determined. Therefore, as shown in FIG. 1 or 2, the outer sensor (to), the central sensor α→, and the inner content sensor (to ) are amplified by the amplifier, selected sequentially by the selector 4, converted from analog signals to digital signals in the converter (2), and guided to the arithmetic circuit. The height ■ is checked by -1. On the other hand, the rotational pulse of the distance measuring vehicle inspection (to) is picked up by the distance measurement sensor (to), integrated by the counter (to), and introduced into the arithmetic circuit to convert it into the actual distance from the starting point.

If the measured deviation exceeds a predetermined range, the degree of deviation and the distance from the starting point force λ are calculated using the printer (
(to) is printed and recorded.

To specifically explain the function and operation of each sensor using this example, each sensor uses a magnetic sensor. As can be seen in Figures (a) and (b), it is necessary that one of the sensors always rest on the working surface of the third rail (3).

Therefore, to measure the separation distance (1), in Fig. 3(a), the central sensor (b) covers the entire surface, and the outer sensor (to) and the inner sensor (to) cover half each on the third rail action surface. If the standard output is when it is within the range, then the third
As shown in Figure (b), the third rail (3) force; if it deviates in the direction of the arrow, the outer sensor (reach) 7! Half of the center sensor q4 is within the third rail working area, and the inner sensor (to) is out of place due to the force of the force, and the increase in the part that is off from the third rail working area is Therefore, since the output is decreased from the above reference output, the arithmetic circuit also determines whether the decrease is due to the outer sensor (to) or the inner sensor (to).
The deviation between the approach limit and the separation limit is used as the measured value for the separation distance (g).

In addition, for the measurement of position height 1), one of the sensors must be placed vertically in the center of the third rail, but in the device of the present invention, at least the outer sensor and the central sensor are placed in advance as described above. Since there are 3 elements and 7 inner sensors, any one of the sensors can be detected. As shown in FIG. 3(a), if there is no deviation with respect to the separation distance (g), y! is due to the central sensor α◆, and
When the third rail (3) is deviated outward as shown by the arrow, the output from the outer sensor (to) to the third rail is calculated in the calculation circuit A, and the upper limit is set for the reading height (A). The deviation between and the lower limit is taken as the measured value.

The measured value I of deviation based on the prescribed compensation standard for the above separation distance (3) and position height 1) can be recorded by either continuous method or intermittent method, but the deviation of the third rail is permissible. It is desirable to use an intermittent recording method that records only when the range is exceeded. For example, it is possible to divide the deviation of the distance prisoner into several stages and record only the deviation at the time when the range is reached.

Figure 4 shows the deviation of the separation distance (G) on the separation side +15fl by 3
It is divided into stages, and the deviation amount C,, m) is shown on the vertical axis and the distance traveled from the starting point (m) is shown on the horizontal axis as a solid line. When the value is about to deviate from the standard value set and subsequently exceeds +5 ELM,
+10fit-Record when it exceeds 1300-1600
It is shown that the tolerance range was exceeded in the section m, and then the standard value was gradually recovered. Also, the deviation on the proximal side -15
ff can also be recorded in the same way, and can be displayed as shown by the broken line in FIG.

These current conditions are expressed as a variety of printing formats, and if track maintenance or I-work is used as an idle line, accurate operation safety based on high-level first-place measurement can be maintained, which is an industrial standard. The usability is enormous.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams showing the configuration of one embodiment of the present invention, in which FIG. 1 shows a constant deviation section, FIG. 2 shows an itching recording section, FIG. 3(a), Figure 4 is a graph showing the occurrence of deviation of the 3rd and 9th rail.

Claims (1)

[Claims] In order to always maintain a direction at a constant angle with the axle of the electric vehicle, a reference arm having a length extending from the inspection vehicle main body and reaching the working surface area of the third rail has a small diameter. In both cases, a third rail sensor is installed, which is formed by each element sensor, including a sensor that correctly faces the third rail working surface and a sensor that is installed on both sides of the center line of the third rail working surface, and a running sensor is installed at the base end of the reference arm. A distance measuring wheel that rolls along the rail is installed,
The signals from the constant deviation section equipped with a range sensor that detects the rotational speed of the wheel and each element sensor forming the third rail sensor are amplified, and each amplified signal is selected. A circuit that performs analog-to-digital conversion and guides it to the arithmetic circuit, a circuit that counts the signal from the distance measurement sensor and guides it to the arithmetic circuit, and an arithmetic recording unit that is connected to the arithmetic circuit are connected. In the structure, the third rail sensor detects the deviation of the third rail from the reference value of the separation distance between the running rail and the third rail and the height of the third rail working surface with respect to the running rail tread surface. A third rail deflection measuring device characterized in that it is configured to measure without coming into contact with the third rail.