JPH10129473A - Safety confirming device for maintenance car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent an accident caused by the man-made mistakes by alerting a driver by an alarm lamp, an alarm buzzer, or a voice message, preventing a doze by blowing a compressed air, and forcibly actuating a brake after a specific time from the failure in the basic motion. SOLUTION: A controller 1 transmits the signals among the devices of safety against wind, safety against overturning, approach of maintenance car alarm control and safety travelling, and inputs the detection signals on hand-scotch, hand brake, driver, speed, brake air pressure, and start of engine, from the sections of a maintenance car, to control the devices. A display unit 2 performs the lighting display of the transmitting conditions of the signals by the controller 1. The safety against wind alerts by the voice or buzzer, when the driver leaves a seat during the operation, or actuates a brake to stop the running-away when the driver leaves the seat without procedure, and the safety against overturning alerts when the driver leaves the seat before the predetermined process has been completed. Further the start of the engine is stopped and controlled, when the loaded approach of maintenance car alarming device is not operated with the intension or by mistake, and the blowing of the pressure air and the forcible stop are performed for preventing the doze in the safety travelling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for performing maintenance and inspection work on railway equipment such as a train track using a maintenance vehicle running on the train track. The present invention relates to a maintenance vehicle safety confirmation device that automatically performs alarm and braking.

[0002]

2. Description of the Related Art Maintenance and inspection of railway equipment such as train tracks is performed by introducing a large number of maintenance cars onto the train tracks at a specific time during the night when the train is not running, and performing a predetermined section on each maintenance car. Each task is shared. Therefore, after departure from the place where the maintenance vehicle waits, there is a possibility that the maintenance vehicles traveling to the destination may come into contact with each other in an area on the track where the train travels. In addition, when the driver temporarily leaves the driver's seat during work, if a predetermined braking operation (braking) or the like is neglected, the maintenance vehicle may run away.

[0003] Further, when the operation is completed and the engine is stopped, and the driver leaves the driver's seat, a hand pawl (a wedge-shaped wheel rolling prevention jig disposed between the rail and the wheel) is provided.
If the rolling prevention process such as described above is neglected, the maintenance vehicle may start running without permission. Furthermore, there is a relatively long distance, such as several kilometers, from the standby place of the maintenance vehicle to the destination where the work is performed, and the driver may fall asleep.

[0004] Therefore, conventionally, a maintenance vehicle approaching warning device including a transmitting device and a receiving device for a warning radio wave is attached to each maintenance vehicle, and when each maintenance vehicle is within a predetermined distance interval. , Each other receives an alarm radio wave and issues a voice or an alarm to notify the driver. In addition, when the driver temporarily leaves the driver's seat during work and does not perform regular operations, an escape prevention device that detects this and issues an audio or warning is attached to prevent the maintenance vehicle from running away. Was.

[0005] Further, similarly to the escape prevention device, the engine is stopped after the work is completed, and if the hand is not stopped according to the operating procedure, a message is issued by voice and a rolling prevention is issued to alert the driver. The equipment is also installed on the maintenance vehicle.

Furthermore, conventionally, when there is no input signal from the driver every predetermined time (for example, 30 to 50 seconds) while the maintenance vehicle is running, the driver falls asleep. A driving safety device that determines that there is a vehicle and automatically starts braking to stop the maintenance vehicle is also mounted.

[0007]

However, even with such a maintenance vehicle provided with the five safety measures described above, the worker can safely and accurately operate under various influences such as working environment and time constraints. You must operate or drive the maintenance vehicle. As a result, the burden on the operator is large, and due to operation errors and insufficient confirmation of the maintenance vehicle,
It could cause an accident.

That is, in the conventional escape prevention device and rolling prevention device, when a normal operation is not performed, the notification is made by a voice or a warning, but the driver does not perform the process according to the voice. Away from the maintenance vehicle, these devices become useless, and the maintenance vehicle will run away or roll. After the work is completed, the driver inserts hand pawls at the front and rear of the wheel to prevent rolling, but if the main switch is turned off without performing the hand pawl treatment, the device will be turned off. , Warning, etc. will not be issued, which may cause the maintenance car to roll.

In addition, there is a brake shoe, a sand tube, etc., near the wheel into which the hand pawl is inserted, and it is difficult to insert the hand pawl itself, and a micro switch for detecting the presence or absence of the hand pawl is installed. That was also difficult.

There are two types of maintenance vehicles, one having a driver's seat such as a motor car, and the other having a driver's seat such as a confirmation car and a multiple tie tamper at two places in front and behind the vehicle. Only one maintenance vehicle approach warning device is installed in each maintenance vehicle.In a maintenance vehicle with two driver seats, the maintenance vehicle approach warning device can be moved every time the driver's seat changes. It was necessary and complicated operation. For this reason, some workers may neglect to move the maintenance vehicle approach warning device and travel without using the device, and it will not be possible to detect the position of another maintenance vehicle. This was not preferable because it could lead to a serious accident such as a collision.

Further, the maintenance vehicle approach warning device is designed such that, if the warning device fails before driving the engine of the maintenance vehicle, the maintenance vehicle cannot drive the engine. However, if the use of the device is canceled, normal traveling is possible. In addition, when the alarm device is out of order after driving the engine, the maintenance vehicle can run only by issuing an alarm. In such a use state, the maintenance vehicle approach warning device does not always work, and the position of another maintenance vehicle cannot be detected as in the case described above, which may lead to a serious accident, which is not preferable. Was.

Further, the above-mentioned conventional safety traveling device is always operating as long as the engine is being driven, irrespective of whether the maintenance vehicle is traveling, working, or stopped. If you do not press the foot release switch below the driver's seat, braking will be applied automatically, but during work and stoppages, the driver often leaves the driver's seat, so the release switch Because it was not possible to press, braking was frequently applied. For this reason, the driver may be bothered by this, and may temporarily turn off the power of the safety traveling device. When traveling again, the driver may forget to restore the power supply and fall asleep.

Further, the conventional maintenance vehicle approach warning device, runaway prevention device, rolling prevention device, safe traveling device, etc.
Each operates independently and emits a sound or an alarm independently. Therefore, if the power supply of each of these devices is not turned on even once, maintenance and inspection work on the specified train tracks etc. will be performed without taking safety measures such as alarms assigned to the corresponding devices, and maintenance In some cases, this could cause accidents such as collisions between vehicles.

[0014]

SUMMARY OF THE INVENTION The present invention has been improved and eliminated in view of the above-mentioned problems, and causes a human error such as an erroneous operation of a maintenance vehicle, a lack of confirmation, and a forgotten maintenance time. In order to solve this problem, it is an object of the present invention to provide a maintenance vehicle safety confirmation device capable of controlling each safety device to operate reliably and accurately.

[0015] In order to solve the above-mentioned problem, the present invention employs the means of the present invention to alert the driver when the driver leaves the driver's seat during work and to automatically apply the brake. A runaway prevention device that activates, a rolling prevention device that alerts the driver when the engine stops and the driver leaves the driver's seat if the rolling prevention process is not performed, and a maintenance vehicle approach warning device Be careful by spraying compressed air to the driver when there is no input signal from the driver at regular intervals, and when there is no input signal from the driver at regular intervals. And arouse
A maintenance vehicle safety confirmation device, comprising: a safety traveling device that automatically operates a brake; and a control device that controls these devices.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. 1 to 6 relate to an embodiment of the present invention. FIG. 1 is a block diagram showing input / output of signals of the control device 1, FIG. 2 is a surface view of the display 2, and FIGS. FIG. 6 is a drawing showing each flowchart.

As shown in FIG. 1, the control device 1 exchanges signals with a runaway prevention device, a rolling prevention device, a maintenance vehicle approach warning control device, and a safe running device, and also detects a hand stoppage detection signal and a hand signal. A detection signal from each part of the maintenance vehicle, such as a brake detection signal, a driver detection signal, a speed detection signal, a brake air pressure detection signal, an engine start detection signal, and the like, is input to control the above devices.

At the same time, the control device 1 controls the opening and closing of the brake solenoid valve to brake and stop the maintenance vehicle, and controls the opening and closing of the air blowing solenoid valve to compress the driver. Blowing air to prevent dozing, etc.
An alarm is issued by voice or rotating light. Further, the control device 1 controls supply of power to the maintenance vehicle approach warning control device. The display 2 is, as shown in FIG.
The signal exchange state in the control device 1 is illuminated and displayed for easy understanding.

Next, the operation of each device based on the control device 1 will be described with reference to the front view of the display 2 shown in FIG. 2 and the flowcharts of FIGS. First, the escape prevention device shown in FIG. 3 will be described. The operation when the maintenance and inspection work of the train track and the like is performed by the maintenance vehicle is started by turning on the engine start SW (switch) of the maintenance vehicle. In other words, it starts by starting the engine of the maintenance vehicle. Immediately after the start of the engine, the warm-up operation is performed for a while to idle the engine itself and fill the air tank with air. After the warm-up operation, the maintenance vehicle travels on the track toward the destination.

When the driver starts the engine while sitting in the driver's seat, the engine oil pressure detection sensor operates, the power supply circuit of the runaway prevention device is turned on, and braking is started in due course. At this time, the warm-up operation is still in progress, "hand stop" is present, and "hand brake" is in the closed state. Therefore, even if there is a driver, the "running impossible" lamp is lit on the display 2, and the torque converter (hereinafter, referred to as "torque converter") is cut off so that the vehicle cannot run. That is, the "maintenance safety confirmation device" of the display 2 and the "engine start" lamps are turned on, and thereafter, "the driver is present", "running impossible", "hand brake", and "hand stop" are performed. ”And the“ Torcon off ”lamps light up.

In this state, when the engine is warmed up and the vehicle is ready to run, the driver removes the "hand stop" and loosens the "hand brake" to turn off each lamp. Then, when the driver sits on the driver's seat, this is detected by a seating sensor or the like, so that "running is possible". As a result, the lamps of "running permitted" and "the driver is present" are turned on. Next, when the driver leaves the driver's seat while the vehicle is stopped or traveling at a speed of 5 km / hour or less, "hand brake, hand brake"
At the same time as the voice message is output, the alarm buzzer is turned ON to call the driver's attention.

On the other hand, when the driver operates the "hand brake" or the direct "brake", the voice message and the alarm buzzer are released. However, if you do not take any action from the alert,
After a time-out of seconds, the "brake" is automatically activated, forcing the maintenance vehicle to stop. To release this, the driver only needs to sit down or activate the hand brake or the direct brake. Display 2
In the "running" lamp flashes, the "no driver" lamp and the "no brake air pressure" lamp light up,
The "bar display" lamp is displayed by increasing and lighting the time-up of 10 seconds.

As described above, when the driver leaves the driver's seat while working, the driver is alerted by a voice message and an alarm buzzer.
The maintenance vehicle can be stopped by automatically operating the brake, and it is possible to automatically prevent the maintenance vehicle from running away.

Next, the operation of the rolling prevention device will be described with reference to the display 2 shown in FIG. 2 and the flowchart of FIG. This anti-rolling device is intended to prevent a driver from leaving a maintenance vehicle without performing a predetermined processing operation when a predetermined work is completed, and to prevent the maintenance vehicle from rolling. Is what you do. When the maintenance and inspection work on the train tracks and the like is completed and the maintenance vehicle returns to the standby place, the driver stops the engine while sitting in the driver's seat. As a result, the "engine start" lamp is turned off, and the "running impossible" lamp and the "driver is present" lamp are turned on.

Then, when the driver leaves the driver's seat without performing any processing operation, immediately after that, "hand brake,
At the same time as the voice message "Hand brake" is output,
The "hand brake" lamp and the "hand stop" lamp flash alternately to alert the driver. In response to this, when the driver tightens the "hand brake", the "hand brake" lamp goes off, only the "hand stop" lamp lights up, and the voice message repeats "hand stop, hand stop". Become.

Thereafter, the driver locks the maintenance vehicle and gets off the vehicle, and stops the wheels. As a result, the voice message “Hand stop, hand stop” is not output.
Then, after two seconds, the power of the control device 1 is automatically turned off and the operation is completed. If the hand stop is not performed, the voice message of “hand stop, hand stop” continues to be output. Therefore, when the driver leaves the maintenance car,
If you do not stop your hand, you will not be able to leave.

The hand pawl is a wedge-shaped wheel rolling prevention device inserted between the wheel and the rail. A brake shoe or a sand pipe is provided beside the wheel to detect the mounting work and the presence or absence of the hand pawl. It is extremely difficult to mount sensors such as limit switches. In the present embodiment, a ferrite magnet is embedded in the upper surface of the main body of the hand pawl device, and this is detected in a non-contact manner by a magnetic sensor attached to the body frame of the maintenance vehicle. This magnetic sensor has a detection distance of 15 cm and can be mounted 10 cm above the ferrite magnet of the hand pawl device body, so there is ample space in the mounting, it is extremely simple, and the mounting adjustment is easy. . Such magnetic sensors also have an operation indicator light,
The setting of the hand pawl can be confirmed from outside via the operation indicator lamp, which is convenient.

Next, the operation of the maintenance vehicle approach warning control device will be described with reference to the display 2 shown in FIG. 2 and the flowchart of FIG. The maintenance vehicle approach warning device mounted on each maintenance vehicle is supplied with power from the control device 1 of the maintenance vehicle safety confirmation device according to the present invention. This is because if the power supply of the maintenance car approaching alarm device can be turned ON and OFF independently as in the conventional case, the maintenance vehicle is required to be operated when the maintenance vehicles are close to each other. The vehicle approach warning device sounds and the noisy condition continues, so the driver intentionally turns off the power.
This is because

When power is supplied from the control device 1 to the maintenance vehicle approach warning device and the engine of the maintenance vehicle is operating, the "engine on" lamp on the display 2 shown in FIG. . If the engine of the maintenance vehicle is stopped, the "engine stopped" lamp is turned on. If the maintenance vehicle approach warning device is not in an environment where it can operate normally, such as when the power connector of the maintenance vehicle approach warning device is not connected properly or the fuse is disconnected while the engine is stopped, the maintenance vehicle Power will not be supplied to the approach warning device. Therefore, by detecting the current of the power supply circuit of the alarm device, it is possible to detect whether the alarm device is in an operable state.

If the current is not detected in the maintenance vehicle approach warning device, the approaching state of the maintenance vehicles cannot be detected and a collision may occur. In this case, even if the starter switch is operated, The starter circuit is kept off so that the engine does not start. Then, the "start impossible" lamp shown in FIG. 2 is turned on. In other words, in the maintenance vehicle safety confirmation device according to the present invention, the engine of the maintenance vehicle does not start unless the power of the maintenance vehicle approach warning device is turned on by the driver's intention or forgotten. I have.

If the power supply of the maintenance vehicle approach warning device is turned off for some reason during the operation of the engine, this can be detected by detecting the current of the power supply circuit. In this case, the “approach device power” lamp and the “engine running” lamp on the display 2 shown in FIG.
Turn on the "bar display" lamp. When this state continues for 5 seconds, all of the "bar display" lamps are turned on, and then the "brake operation" lamp is turned on, and at the same time, the brake is forcibly activated to stop the traveling of the maintenance vehicle.
That is, if the power of the maintenance vehicle approaching warning device is turned off while the maintenance vehicle is running, this is displayed, and if this state continues for 5 seconds or more, the maintenance vehicle is forcibly stopped and the maintenance vehicle is stopped. They try to avoid collisions between cars. As described above, in the maintenance vehicle safety confirmation device according to the present invention, the maintenance vehicle cannot be operated when the maintenance vehicle approach warning device is not working, thereby preventing the occurrence of human error.

In the flowchart shown in FIG. 5, the driving direction refers to the direction of travel when the driver's cab is provided at the front and rear as in a maintenance car such as a multiple tie tamper. It is for. This is because it is necessary to attach the maintenance vehicle approach warning device to the driver's cab located in front of the traveling direction of the maintenance vehicle. When the traveling direction is reversed, the connection connector of the maintenance vehicle approach warning device may be disconnected and connected to the connection jack of the corresponding cab. If the traveling direction is reverse, the maintenance vehicle approach warning device cannot receive a weak radio wave and does not operate normally. Therefore, only when the maintenance vehicle approaching warning device is connected to the driver's cab located in front of the traveling direction, the power is turned on.

In the flowchart shown in FIG.
The flow line located on the rightmost side confirms whether the maintenance vehicle approach warning device is installed in the cab of the first maintenance vehicle when traveling with two maintenance vehicles connected, When the maintenance vehicle is not the leading maintenance vehicle, the maintenance vehicle approach warning device is turned off. This figure 5
In the flowchart shown in (1), the confirmation as to whether or not the vehicle is the leading maintenance vehicle is automatically performed in conjunction with the connecting operation of the maintenance vehicle.

Next, the operation of the safe traveling apparatus will be described with reference to the display 2 shown in FIG. 2 and the flowchart of FIG. This safety traveling device is a device for preventing a driver from falling asleep during traveling.If there is no signal input from the driver at regular intervals, it is determined that the driver has fallen asleep and the driver is notified of compressed air. And try to wake up, and if the driver keeps falling asleep, the maintenance vehicle is forcibly stopped. For example, when the maintenance vehicle has completed a predetermined operation and started traveling for forwarding or the like, the speed is 5 km.
/ H or more, the display 2 shown in FIG.
/ H or more ”indicator lamp is turned on. Then, the vertical "bar display" lamps are sequentially turned on at regular intervals.

During traveling at a speed of 5 km / h or more, the driver continuously sends a confirmation switch signal to the control device 1 by a foot switch or the like for more than 5 seconds (for example, when the foot switch or the like is released). If you do) and 2
The 0 second timer starts. It is determined that this stepping-off state is dozing, and when the time is up for 20 seconds, the alarm lamp is turned on and the alarm by the buzzer is turned ON.
Then, at the same time as this alarm, the two-second timer and the five-second timer are started, and when the two-second timer times out,
The control device 1 opens the air blowing electromagnetic valve. As a result, compressed air is blown out near the driver's face,
Call attention to wake up. 3 from air blow
After a lapse of seconds, the air will automatically stop. It is also possible to blow out continuously. On the other hand, when the 5-second timer expires, the brake is automatically activated to forcibly stop the maintenance vehicle, and at the same time, the "brake activated" lamp is turned on.

When the driver wakes up by the blowing of air and operates the foot switch or the like to output a confirmation switch signal again, if the brake is operating, the brake is released, and the above-mentioned 20 seconds is released. The timer and a 40-second timer described below are reset, and if the lamp is on, this is cleared. The 40-second timer detects the rising signal of the confirmation switch signal when the driver steps on the foot switch, etc., as one pulse, counts the time from this time, and inputs the confirmation switch signal again until 40 seconds have elapsed. If not, it is determined that the user has fallen asleep, and the same control as in the case of the time-up of the 20-second timer is performed.

In short, when the speed of the maintenance vehicle exceeds 5 km / h, the safety traveling device determines that the driver is dozing unless the switch for confirmation is always operated within a certain time. The safety is established by blowing out compressed air or forcibly applying braking to stop the maintenance vehicle.

By the way, the present invention is not limited to the above-described embodiment. For example, the time for blowing out compressed air and the time for setting various timers can be appropriately changed.

[0039]

As described above, in the present invention,
If the driver temporarily leaves the driver's seat while working on the maintenance vehicle, forget to apply the hand brake, forget to turn on the power to the maintenance vehicle approach warning device, and stop the hand when leaving the driver's seat after stopping the engine. Even if an operation error such as forgetting to call or an artificial error occurs, the driver can be alerted by a warning lamp, a warning buzzer, or a voice message, or can be prevented from falling asleep by blowing compressed air. In addition, if the basic operation is neglected and a predetermined time elapses, the brake is forcibly operated, so that it is possible to reliably prevent the occurrence of an accident due to a human error or the like.

When the maintenance vehicle approach warning device is not operated, the maintenance vehicle is immovable, so that a collision accident between the maintenance vehicles can be surely avoided. Furthermore, the escape prevention device, the rolling prevention device, the maintenance vehicle approach warning control device, and the safe traveling device in the present invention are entirely controlled by one control device, and there is no forgetting to turn on the power of each device, etc. It is possible to ensure that each device functions and ensure safe operation.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing input and output of signals of a control device of a maintenance vehicle safety confirmation device according to the present invention.

FIG. 2 is a front view showing a display of the maintenance safety confirmation device according to the present invention.

FIG. 3 is a flowchart of a runaway prevention device according to the present invention.

FIG. 4 is a flowchart of a rolling prevention device according to the present invention.

FIG. 5 is a flowchart of the maintenance vehicle approach warning control device according to the present invention.

FIG. 6 is a flowchart of the safety traveling device according to the present invention.

[Explanation of symbols]

 1. Control device 2. Display

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tatsuo Matsuo 2-4-2, Shibata, Kita-ku, Osaka City Inside West Japan Railway Company (72) Inventor Kenji Noyama 2-4-2, Shibata, Kita-ku, Osaka City Inside West Japan Railway Company (72) Inventor Yoji Fukuhara 2-4-2, Shibata, Kita-ku, Osaka-shi Inside West Japan Railway Company (72) Inventor Toshihiko Harada 559-11, Suetakenaka, larger section of Kudamatsu City, Yamaguchi Prefecture Inside Yamaguchi Electronics Co., Ltd.

Claims (1)

[Claims] (1) A warning device that alerts the driver when he / she leaves the driver's seat during work and automatically activates the brake, and a driver when the engine stops and the driver leaves the driver's seat. In addition, a rolling prevention device that alerts the user if the rolling prevention process is not performed, and a maintenance vehicle approach warning that prevents the maintenance vehicle from moving when the maintenance vehicle approach warning device is not operating. A control device, a safety driving device that alerts the driver by blowing compressed air to the driver if there is no input signal from the driver at regular intervals, and automatically activates the brake, and each of these devices And a control device for controlling the safety of the vehicle.