JPH06750Y2 - Automatic measuring device for dynamic characteristics of trolley wire - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic trolley wire dynamic characteristic measuring device for detecting and recording the amount of push-up and strain of a trolley wire pushed up by a pantograph as a train passes by.

[0002]

2. Description of the Related Art Recently, there is a trend toward faster trains,
Especially in the Shinkansen, the maximum speed is planned to be improved, and various studies and experiments have been conducted.

However, increasing the speed of trains imposes a burden on the trolley wire as a power supply line. In other words, when the train runs at high speed, the pantograph also speeds up, and the trolley wire is momentarily pushed up as the pantograph passes.

If the trolley wire is pushed up rapidly and excessively, the overhead wire fitting may not be able to follow the rise of the trolley wire, and in such a case, the pantograph comes into contact with the overhead wire fitting and is damaged. Further, when the trolley wire is pushed up rapidly and excessively, the strain amount of the trolley wire itself increases, and when it reaches the fatigue limit, a disconnection accident due to metal fatigue occurs. Therefore, when speeding up the train, even if the other conditions satisfy the speeding up, the push-up amount and the strain amount of the trolley wire will be restricted. For this reason, it is necessary to run a commercial vehicle or an experimental vehicle on an actual railroad track to find out what speed the trolley wire in the traveling area can withstand. As such a measuring means, a trolley wire dynamic characteristic automatic measuring device is used. A conventional measuring device will be described with reference to FIGS. 3 and 4. In the figure, reference numeral 1 is a trolley wire, and a suspension overhead wire 2
It is suspended by a large number of hangers 3 ... Or a dropper and is laid substantially horizontally.

The suspension overhead wire 2 is supported by, for example, a horizontal beam 4 as an overhead wire supporting structure, and both ends of the horizontal beam 4 are supported by columns 6 via insulators 5. In addition,
A movable bracket 7 is connected to the horizontal beam 4,
The movable bracket 7 is connected to the support column 6 via an insulator 8.

A push-up amount detector, such as a potentiometer 10, for detecting the push-up amount of the trolley wire 1 is installed on the hanger 3 or the dropper. The potentiometer 10 may be a known linear sliding type, and its electrical resistance value changes according to the amount of pushing up of the trolley wire 1.

Further, the trolley wire 1 is provided with a strain amount detector for detecting the strain amount, for example, strain gauges 11, 11. Although not shown, these strain gauges 11 and 11 form a well-known bridge circuit so that a change in resistance value due to strain of the strain gauge can be taken out as an electric signal.

The horizontal beam 4 has a telemeter transmitter 12
And the battery 13 is attached. The telemeter transmitter 12 includes the potentiometer 10 and the strain gauge 1.
It is electrically connected to 1 and 11 and operates by using the battery 13 as a power source. This telemeter transmitter 12 amplifies the signals sent from the potentiometer 10 and the strain gauges 11 and 11 by an amplifier 14, and converts this into a radio signal such as frequency modulation (FM) or pulse code modulation (PCM). It is designed to be converted and transmitted.

A timer 15 is provided between the battery 13 and the telemeter transmitter 12.
When the predetermined measurement time set at 5 is reached, the telemeter transmitter 12 is operated by the battery 13 as a power supply for a predetermined time.

On the ground, a telemeter receiver 16 is prepared in a state of being electrically insulated from the telemeter transmitter 12. The telemeter receiver 16 wirelessly intercepts the FM and PCM signals transmitted from the telemeter transmitter 12, and the potentiometer 10 and the strain gauge 1
It is converted into an electric signal equivalent to the signal sent from the terminals 1 and 11. A pen recorder 17 as a recorder is connected to the telemeter receiver 16, and the potentiometer 1 received by the telemeter receiver 16 is connected to the pen recorder 17.
The 0 and strain gauge 11, 11 signals are recorded.

The telemeter receiver 16 and the pen recorder 17 are connected to a battery 18, and the pen recorder 17 operates with the battery 18 as a power source when the manual switch 19 is operated. The operation of the measuring device having such a configuration will be described.

For example, when the timer 15 is started,
If it is set to be before or after the last train passes, at this starting time, the telemeter transmitter 12 starts to wirelessly transmit the signals sent from the potentiometer 10 and the strain gauges 11 and 11.

This radio signal is transmitted to the telemeter receiver 1 on the ground.
6, the telemeter receiver 16 sends to the pen recorder 17 an electrical signal equivalent to the signals sent from the potentiometer 10 and the strain gauges 11, 11. However, the pen recorder 17 does not operate unless the manual switch 19 is operated.

The measurement worker standing by on the ground operates the manual switch 19 after confirming that the train has passed a predetermined point when the train approaches. Then, the pen recorder 17 is activated to record the measurement data measured by the potentiometer 10 and the strain gauges 11, 11. That is,
When the above train passes, the pen recorder 1 detects the push-up amount and the strain amount of the trolley wire 1 pushed up by the pantograph.
Record at 7.

If the dynamic characteristics of the trolley wire in the case of a plurality of trains having different speeds are measured by continuing such measurement for a predetermined time, the speed of the train and the push-up amount and strain amount of the trolley wire 1 are measured based on the measured data. It is possible to know the relationship between the trains and the maximum train speed possible in this measurement section.

[0016]

However, in the case of the above-mentioned conventional measuring device, the telemeter transmitter 12 is installed on the overhead line side such as the horizontal beam 4 and the telemeter receiver 16 is installed on the ground side to perform the measurement work. The operator operates the manual switch 19 to obtain the measurement data of the passing train, which is disadvantageous in that the device is complicated and expensive.

That is, in the conventional case, the pen recorder 17
Operation is controlled by direct manual operation by the measurement workers, so it is necessary to place the measurement workers at the measurement points, and this kind of speed inspection is performed in the middle of the night after the final commercial train passes. Therefore, it becomes heavy work at midnight.

For the trolley wire, 1500 for direct current
In the case of a volt or an alternating current, 25 kilovolts are flown, and insulation is required for such a trolley wire. In other words, when the operator directly operates the pen recorder 17,
Since it is necessary to electrically insulate the trolley wire from the trolley wire, conventionally, measurement data is transmitted and received by a radio signal from a telemeter. However, the telemeter is expensive for both transmitter 12 and receiver 16. Moreover, the above-mentioned measuring device has the drawback that the number of devices used increases and the structure becomes complicated, such as requiring batteries 13 and 18 on the overhead line side and the ground side, respectively.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the need for special operations, reduce the number of devices used, and simplify the overall structure. It is intended to provide an automatic measuring device for dynamic characteristics of lines.

[0020]

In order to achieve the above object, the present invention detects at least one of the push-up amount and the strain amount of a trolley wire that is pushed up by a pantograph as a train passes, and this detector is used. In the trolley wire dynamic characteristic automatic measuring device which sends an electric signal output from the recorder to the recorder for recording, the recorder is driven by a battery, and the train is connected between the recorder and the battery. A train detection type switch for operating a recorder by detecting an approach is electrically connected, and the recorder and the battery are attached to an overhead wire support structure having the same potential as the trolley wire. To do.

[0021]

According to the present invention, since the recorder is operated by the train detection type switch which detects the approach of the train and operates, the automatic measurement can be performed without the need of a special measurement worker. Since such automatic measurement is possible, it is not necessary to take measures against electrical insulation for the measurement worker. Since the recorder and the battery are attached to the overhead wire supporting structure having the same potential as the trolley wire, it is not necessary to send and receive signals by a remote wireless signal, the number of devices used is reduced, and the structure is simplified.

[0022]

【Example】

The present invention will be described in detail below based on an embodiment shown in FIGS. 1 and 2.

In the present invention, the same structure as the conventional structure shown in FIG. 3 is denoted by the same reference numeral and its description is omitted. That is, in FIG. 1, 1 is a trolley wire, 2 is a suspension wire, 3 is a hanger 3, ... Or a dropper, 4 is a horizontal beam as an overhead wire supporting structure having the same potential as the trolley wire 1, 5 is an insulator, 6 is a pillar,
7 is a movable bracket, and 8 is an insulator. Also,
Reference numeral 10 is a push-up amount detector for detecting the push-up amount of the trolley wire 1, which is composed of a potentiometer similar to the conventional one. Reference numeral 11 is a strain amount detector for detecting the strain amount of the trolley wire 1, and is constituted by a strain gauge similar to the conventional one.

A pen recorder 20 and a battery 21 are attached to the horizontal beam 4. The pen recorder 20 includes the potentiometer 10 and the strain gauge 1.
The battery 21 is electrically connected to the batteries 1 and 11 and operates by using the battery 21 as a power source. This pen recorder 20
Is the potentiometer 10 and strain gauges 11, 1
1 is amplified by the amplifier 22 shown in FIG. 2, and the potentiometer 10 and the strain gauge 11 are
Recording is performed with a pen on recording paper (not shown) in response to a signal from 11.

A timer 23 is provided between the battery 21 and the pen recorder 20, and when the predetermined measurement time set by the timer 23 is reached, the pen recorder 20 can be operated for a predetermined time by using the battery 21 as a power source.

However, between the timer 22 and the pen recorder 20, there is electrically connected a train detection type switch 24 which detects the approach of a train and operates. The train detection type switch 24 opens and closes an electric circuit by the operation of a train detector 25 installed on the movable bracket 7, as shown in FIG. 1, for example. The train detector 25 is composed of, for example, an optical sensor, and is adapted to turn on the switch 24 when the front of the train approaches to about 2 to 3 m. As a result, the pen recorder 20 is connected to the battery 21, and the pen recorder 20 is started.

One to several seconds after the switch 24 is turned on, the pantograph of the train passes near the train detector 25 and pushes up the trolley wire 1 near the train detector 25. The operation of the measuring device having such a configuration will be described.

For example, when the timer 23 is started,
If the setting is made before or after the final train passes, at this starting time, the signals sent from the potentiometer 10 and the strain gauges 11, 11 are amplified by the amplifier 22 and transmitted to the pen recorder 20. To be However, unless the train detection type switch 24 is turned on,
The pen recorder 20 does not work.

When the train approaches, the movable bracket 7
The train detector 25 installed at detects a train and turns on the switch 24. As a result, the pen recorder 20 is electrically connected to the battery 21, and the pen recorder 20 is started.

One to several seconds after the switch 24 is turned on, the pantograph of the train passes near the train detector 25 and pushes up the trolley wire 1 near the train detector 25. Therefore, the potentiometer 10 and the strain gauge
The gauges 11, 11 measure the push-up amount and the strain amount of the trolley wire 1 and send this signal to the pen recorder 20, so that the pen recorder 20 records the measurement data.

If such a measurement is continued for the time that the timer 23 is operating, the dynamic characteristics of the trolley wire by a plurality of trains of different speeds can be measured. Based on the measurement data, the train speed and the trolley wire can be measured. The relationship between the push-up amount and the strain amount of the line 1 can be known. Therefore, it is possible to know the maximum possible train speed in this measurement section.

According to the measuring apparatus of such an embodiment, when the train detector 25 detects the approach of a train, the train detection type switch 24 is turned on to operate the pen recorder 20, so that the automatic measurement is possible. Become.

Therefore, it is not necessary for the measuring operator to measure the passage of the train one by one as in the conventional case, and it is possible to omit this kind of measuring work which is often measured at midnight or midnight.
Labor saving can be realized. Further, since the automation is performed as described above, it is not necessary for the measurement operator to touch the pen recorder 20, and it becomes easy to take measures against insulation of the high voltage trolley wire 1.

Since the automation as described above has become possible, the pen recorder 20 and the battery 21 are connected to the trolley wire 1.
Overhead wire support structure having the same potential as that of the horizontal beam 4 at a high place, for example.
Since the pen recorder 20 and the battery 21 can be kept at the same potential as the trolley wire 1, the insulating structure of these can be simplified.

Then, the pen recorder 20 and the battery 21
Since the trolley wire 1 has the same potential as the trolley wire 1, there is no need to send and receive signals by remote radio signals, and there is no need for a conventional telemeter transmitter or receiver, and no need for batteries on the overhead line side and the ground side. . Therefore, the number of devices used is reduced, the structure is simplified, and the facility cost is reduced.

Moreover, in the case of the above embodiment, the train detector 2
Train detection switch 2 when 5 detects approaching train
4 is turned on and the pen recorder 20 is activated, so no measurements are taken in the absence of trains and therefore the battery 2
The consumption of 1 is small.

This type of measurement is performed by measuring several hours a day for several days and obtaining measurement data continuously for several days. Therefore, a large capacity battery is essentially unnecessary, but the timer 23 and Since the battery is used only when necessary by using the train detection type switch 24, the battery usage amount can be small.

In the above embodiment, the case where the push-up amount and the strain amount of the trolley wire 1 are simultaneously measured has been described. However, even when only the push-up amount of the trolley wire 1 or only the strain amount is desired to be measured. It is feasible.

The push-up amount detector for detecting the push-up amount of the trolley wire 1 is not limited to the potentiometer 10, and the strain amount detector for detecting the strain amount of the trolley wire 1 is not limited to the strain gauge. The push-up amount and the strain amount can be detected by various known sensors.

[0040]

As described above, according to the present invention, since the recorder is operated by the train detection type switch which detects the approach of the train and operates, the automatic recording is possible even if there is no special measurement worker. Measurement becomes possible. Since automatic measurement is now possible, there is no need for electrical insulation measures for measurement workers, and the recorder and battery can be attached to the overhead wire support structure that has the same potential as the trolley wire, and signals can be sent and received by remote wireless signals. Is unnecessary, the number of devices used is reduced, and the structure is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a trolley wire dynamic characteristic automatic measuring device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electric circuit configuration of the embodiment.

FIG. 3 is a perspective view showing a schematic configuration of a conventional trolley wire dynamic characteristic automatic measuring device.

FIG. 4 is a block diagram showing a conventional electric circuit configuration.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Trolley wire, 2 ... Suspension wire, 3 ... Hanger, 4 ... Horizontal beam, 6 ... Strut, 7 ... Movable bracket, 10 ... Potentiometer, 11 ... Strain gauge, 20 ... Pen recorder, 21 ...
Battery, 23 ... Timer, 24 ... Train detection type switch, 2
5 ... Train detector.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shunichi Kusumi, Shunichi Kusumi, Tokyo 8-8, Hikarimachi, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) Sadao Ito 2-18-8, Yasuokaji, Takatsuki, Osaka No. (72) Inventor Kazuo Takeuchi 1-5-2 Fuminosato, Abeno-ku, Osaka-shi, Osaka Prefecture JR Dormitory No. 1 Building No. 13 (72) Fumaki Tone 35, Takenoshiro-Takenocho, Yamashina-ku, Kyoto, Kyoto (72) Inventor Matsutaro Ichikawa 20-9 Oiwake-cho, Hachioji-shi, Tokyo

Claims (1)

[Scope of utility model registration request] 1. A detector detects at least one of a push-up amount and a strain amount of a trolley wire pushed up by a pantograph as a train passes, and an electric signal output from this detector is sent to a recorder. In the trolley wire dynamic characteristic automatic measuring device for recording by the recorder, the recorder is driven by a battery, and the recorder is activated by detecting the approach of a train between the recorder and the battery to activate the recorder. A trolley wire dynamic characteristic automatic measuring device, characterized in that a train detection type switch is electrically connected and the recorder and the battery are attached to an overhead wire supporting structure having the same potential as the trolley wire.