JP4114105B2 - Safe driving device for maintenance vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention performs maintenance and inspection work on railway facilities such as train tracks using a maintenance vehicle traveling on the train tracks, and when no operation is performed based on a predetermined operation procedure, warning and braking are performed. The present invention relates to a safe traveling device for a maintenance vehicle that is automatically performed.
[0002]
[Prior art]
For maintenance inspections of railway facilities such as train tracks, a large number of maintenance vehicles are introduced onto the train track at specific times during the night when the train is not running, and each maintenance vehicle shares the work for each predetermined section. And do it. For this reason, after leaving the place where the maintenance vehicle is waiting, there is a possibility that the maintenance vehicles heading for the destination may come into contact with each other in the region on the track on which the train travels. Further, when the driver temporarily leaves the driver's seat during work, the maintenance vehicle may run away if the predetermined braking operation (braking) or the like is neglected.
[0003]
Furthermore, when the work is finished and the engine is stopped, and the driver leaves the driver's seat, rolling prevention such as hand pawls (wedge-shaped wheel rolling prevention jig arranged between the rail and the wheel) etc. If the processing is neglected, the maintenance vehicle may start traveling without permission. Furthermore, there is a relatively long distance, such as several kilometers, from the standby position of the maintenance vehicle to the destination where the work is performed, and the driver may fall asleep.
[0004]
Therefore, conventionally, a maintenance vehicle approach alarm device consisting of a warning radio wave transmitter and receiver is attached to each maintenance vehicle, and when the maintenance vehicles are within a predetermined distance interval, They received alarm waves from each other and made a voice or alarm to inform the driver. In addition, when the driver temporarily leaves the driver's seat during work, if a normal operation is not performed, a runaway prevention device that detects this and issues a sound or alarm is installed to prevent the maintenance vehicle from running away. It was.
[0005]
In addition, as with the runaway prevention device, the engine is stopped after the work is completed, and if the hand is not locked according to the operation procedure, a rolling sound prevention device that issues a voice message and alerts the driver is also maintained. It is installed in a car.
[0006]
Furthermore, conventionally, when there is no input signal from the driver every certain time (for example, 30 seconds to 50 seconds) while the maintenance vehicle is traveling, it is determined that the driver is falling asleep. In addition, a traveling safety device that automatically starts braking and stops the maintenance vehicle is also installed.
[0007]
[Problems to be solved by the invention]
However, even in a maintenance vehicle with such four safety measures, an operator can operate the maintenance vehicle safely and accurately while receiving various influences such as work environment and time constraints, I have to drive. For this reason, the burden on the worker is large, and it may cause an accident due to an operation mistake of the maintenance vehicle, insufficient confirmation, forgetting maintenance time, and the like.
[0008]
In other words, the conventional anti-runaway device and anti-rolling device notify the user with a voice or an alarm when the normal operation is not performed. However, the driver does not perform the processing according to the voice. away from, these devices become meaningless, maintenance vehicles ing to runaway or rolling. Also, after the work is finished, the driver inserts hand pawls at two places on the front and rear of the wheel to prevent rolling, but if the main switch is turned off without hand pawl treatment, the power of the device will be turned off. since the alarm or the like can not be issued, maintenance vehicles ing and the cause of the accident that rolls.
[0009]
Moreover, the vicinity of the wheel to insert the wheel chock, there is a brake shoe or sand tube or the like, on difficult itself inserting the wheel chock, it is placed a micro switch or the like for detecting the presence or absence of a wheel chock itself It was also difficult.
[0010]
In addition, there are two types of maintenance vehicles, one having a driver's seat such as a motor car, and one having a driver's seat such as a confirmation vehicle and multiple tie tampers at two front and rear sides of the vehicle. Only one maintenance vehicle approach warning device is installed in each maintenance vehicle. For maintenance vehicles with two driver seats, the maintenance vehicle approach warning device can be moved each time the driver seat changes. Necessary and cumbersome operation. For this reason, some workers may neglect to move the maintenance vehicle approach warning device and travel without using the device, and the position of other maintenance vehicles cannot be detected. A serious accident such as a collision could occur, which was not preferable.
[0011]
In addition, the maintenance vehicle approach warning device is designed to prevent the maintenance vehicle from driving the engine if the alarm device fails before the maintenance vehicle engine is driven. If the use of the device is canceled, normal driving is possible. In addition, if there is a failure of the alarm device after the engine is driven, the maintenance vehicle can run only by issuing an alarm. In such a state of use, the maintenance vehicle approach warning device does not always work, and as in the case described above, the position of another maintenance vehicle cannot be detected. It was.
[0012]
Further, when the engine is running, the conventional safe traveling device operates constantly regardless of whether the maintenance vehicle is traveling, working, or stopped. If you do not press the foot-operated release switch below, braking is automatically applied, but the driver often leaves the driver's seat while working or stopping, so press the release switch Because it was not possible, braking was applied frequently. For this reason, the driver may be bothered by this, and the safety traveling device may be temporarily turned off. When traveling again, the driver may forget to restore the power and may fall asleep.
[0013]
Furthermore, the conventional maintenance vehicle approach alarm device, the escape prevention device, the rolling prevention device, the safety travel device, etc. each operate independently and issue a sound or an alarm alone. For this reason, if even one of these devices is turned off, maintenance and inspection work for the specified train line, etc. will be performed without taking safety measures such as alarms for the relevant device. This could cause accidents such as collision of cars.
[0014]
[Means for Solving the Problems]
The present invention is an improvement and removal in view of the above-mentioned conventional problems, and even when a human error such as a driver 's operation mistake or lack of confirmation, forgetting maintenance time has occurred, to solve this, It is an object of the present invention to provide a safe traveling device for a maintenance vehicle that can be controlled to operate each safety device reliably and accurately.
[0015]
And Thus, the hand stages present invention in order to solve the above problems has been adopted, while the maintenance vehicle running, is input when there is no input or confirmation signal confirmation signal from the driver for every fixed time given A safe travel device that alerts the driver and automatically activates the brake if it continues for more than an hour, and includes a compressed air blowing means, a control device that controls the operation of the brake, and a confirmation signal An input means, a timer that starts when the confirmation signal is input in a pulse, and a timer that starts when the input of the confirmation signal continues for a predetermined time or more, and when one of the two timers is up after the start , It is set to blow compressed air to the driver and to activate the brake, and when the confirmation signal is input in pulses before the timer is running, the timer That are set to be reset is a safe driving apparatus maintenance vehicle according to claim.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described below based on the embodiment 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 signal input / output of the control device 1. FIG. 2 is a surface view of the display 2. FIG. FIG. 6 is a flowchart showing an operation mode of each apparatus .
[0017]
Figure 1 shows to control device 1, runaway prevention device, the rolling prevention device, maintenance vehicles proximity warning control device performs exchange of signals between the driving safety device, wheel chock detection signal and handbrake detection signal, the driver detection signal, the speed detection signal, a brake air pressure detection signal, the detection signal from each part of the maintenance vehicle, such as engine start detection signal is inputted, and controls the respective devices.
[0018]
At the same time, the control device 1 controls the opening and closing of the brake solenoid valve, brakes and stops the maintenance vehicle, controls the opening and closing of the air blowing solenoid valve, and blows out compressed air to the driver. In order to prevent falling asleep, etc., alarms such as voice and rotating lights are issued. Furthermore, the control device 1 controls the supply of power to the maintenance vehicle approach warning control device. As shown in FIG. 2, the display device 2 lights up and displays the signal exchange state in the control device 1 in an easy-to-understand manner.
[0019]
Next, the operation mode 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 apparatus shown in FIG. 3 will be described. The operation when the maintenance inspection work such as the train track is performed in the maintenance vehicle is started by turning on the engine start SW (switch) of the maintenance vehicle. That is, it starts by starting the engine of the maintenance vehicle. Immediately after the engine is started, warm-up operation is performed for a while to idle the engine itself or to fill the air tank with air. After the warm-up operation, the maintenance vehicle travels on the track toward the destination.
[0020]
When the engine is started in a state where the driver is seated on the driver's seat, the engine oil pressure detection sensor operates, the power supply circuit of the runaway prevention device is turned on, and control is eventually started. At this time, the engine is still warming up, “hand pawl” is present, and “hand brake” is tightened. Accordingly, even if the driver is present, the “travel impossible” lamp is lit on the display 2 and the torque converter (hereinafter referred to as torque converter) is cut off, making it impossible to travel. In other words, the "maintenance car safety check device" of the display device 2, and the lights and the lamps of the "engine start" is, "Ru have driver" then, as "travel-disabled", and the "hand brake", " The “Hand Pawl” and “Torcon Cut” lamps light up.
[0021]
When the engine is warmed from this state and is ready to run, the driver or the like removes the “hand pawl” and loosens the “hand brake” to turn off each lamp. Then, when the driver is seated in the driver's seat, this is detected by a seating sensor or the like, and “running is possible”. As a result, the "running possible", the lamp of the "Ru have driver" is turned on. Next, when the driver leaves the driver's seat while driving at a speed of 5 km / hour or less, a voice message “hand brake, hand brake” is output and the alarm buzzer is turned on, Call attention.
[0022]
On the other hand, when the driver operates “hand brake” or direct “brake”, the voice message and the alarm buzzer are released. However, if no action is taken from the alert, the “brake” is automatically activated after 10 seconds, and the maintenance vehicle is forcibly stopped. In order to release this, the driver may be seated or a hand brake or a direct brake may be operated. On the display 2, the “Run ready” lamp flashes, the “No driver” lamp and the “No brake air pressure” lamp are lit, and the “Bar display” lamp is displayed with an increase of 10 seconds. To do.
[0023]
In this way, when the driver leaves the driver's seat during work, he / she is alerted by a voice message and an alarm buzzer, and when he / she forgets the process and leaves the maintenance vehicle, the brake is automatically activated. It is possible to stop the maintenance vehicle and automatically prevent the maintenance vehicle from running away.
[0024]
Next, the operation mode of the rolling prevention device will be described with reference to the display 2 shown in FIG. 2 and the flowchart of FIG. The purpose of the anti-rolling device is to prevent the driver from leaving the maintenance vehicle without performing a predetermined processing operation when the predetermined work is completed, and to prevent the maintenance vehicle from rolling. To do. When the maintenance and inspection work for the train tracks and the like is completed and the maintenance vehicle returns to the standby position, the driver stops the engine while sitting on the driver's seat. As a result, the "engine start" lamp is turned off, and a "travel-disabled" lamp and the "operation Ru have hand" lamp is turned on.
[0025]
When the driver leaves the driver's seat without performing any processing operation, the voice message “hand brake, hand brake” is output immediately after that, and at the same time the “hand brake” lamp and “hand pawl” The lamp flashes alternately to alert the driver. In response, when the driver tightens the "hand brake", the "hand brake" lamp goes off, only the "hand pawl" lamp lights up, and the voice message calls "hand pawl, hand pawl" continuously. Become.
[0026]
After that, the driver locks the maintenance vehicle and gets off, and performs hand pawls on the wheels. As a result, the voice message “hand pawl, hand pawl” is not output. Then, after 2 seconds, the control device 1 is automatically turned off and the operation is completed. If hand pawl is not performed, the voice message “hand pawl, hand pawl” continues to be output. Therefore, when the driver leaves the car for maintenance, ing can not stay away unless always performed a wheel chock.
[0027]
The hand pawl is a wedge-shaped wheel rolling prevention device that is inserted between the wheel and the rail, and there is a brake shoe or sand pipe beside the wheel. It was extremely difficult to install the sensor. In this embodiment, a ferrite magnet is embedded on the upper surface side of the hand pawl device main body, 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 at a position 10 cm above the ferrite magnet of the hand pawl device body, so that the mounting is spatially simple, extremely simple, and easy to adjust. . Further, such a magnetic sensor is provided with an operation indicator lamp, and it is convenient that the confirmation of the hand pawl setting state can be confirmed from the outside via the operation indicator lamp.
[0028]
Next, the operation mode 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 maintenance vehicle approach alarm device can be turned on and off independently as in the past, the maintenance vehicle will be used for maintenance if the maintenance vehicles are kept in close proximity. This is because the car approach warning device is turned off and the driver continues to turn off the power, so the driver may intentionally turn off the power.
[0029]
Then, when electric power is supplied from the control device 1 to the maintenance vehicle approach warning device and the engine of the maintenance vehicle is in operation, the “engine starting” lamp of the display 2 shown in FIG. If the engine of the maintenance vehicle is stopped, the “engine stopped” lamp is lit. When the engine is stopped and the maintenance vehicle approach alarm device is not in an environment where it can operate normally, such as when the power connector of the maintenance vehicle approach alarm device is poorly connected or the fuse is removed, the maintenance vehicle Electric power is not supplied to the approach warning device. Therefore, it is possible to detect whether the alarm device is in an operable state by detecting the current of the power supply circuit of the alarm device.
[0030]
If no current is detected in the maintenance vehicle approach warning device, the approaching state between maintenance vehicles cannot be detected and a collision may occur. In this case, the engine will start even if the starter switch is operated. The starter circuit is kept in the OFF state so that it does not occur. Then, the “not startable” lamp shown in FIG. 2 is turned on. In other words, in the maintenance vehicle safety confirmation device of this example, the maintenance vehicle engine is not started when the power of the maintenance vehicle approach alarm device is not turned on due to the driver's intention or forgetfulness. .
[0031]
Further, when the maintenance vehicle approach warning device is turned off for some reason during engine operation, this can be detected by detecting the current in the power supply circuit. In this case, the “approaching device power off ” lamp and the “engine starting” lamp of the display 2 shown in FIG. 2 are continuously lit, and the “bar display” lamp is lit up. If 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 and the traveling of the maintenance vehicle is stopped. In other words, if the maintenance vehicle approach warning device is turned off while the maintenance vehicle is running, this is displayed, and if this state continues for more than 5 seconds, the maintenance vehicle is forcibly stopped and I try to avoid collisions between cars. As described above, in this example , when the maintenance vehicle approach warning device is not working, the maintenance vehicle cannot be operated to prevent human error.
[0032]
In the flow chart shown in FIG. 5, the driving direction is for confirming which traveling direction is in the case where cabs are provided at the front and rear, respectively, such as a maintenance vehicle such as a multiple tie tamper. It is. This is because it is necessary to attach the maintenance vehicle approach warning device to the 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 alarm device may be removed and connected to the connection jack of the corresponding cab. This is because when the traveling direction is opposite, the maintenance vehicle approach warning device cannot receive weak radio waves and does not operate normally. Accordingly, the power supply is turned on only when the maintenance vehicle approach alarm device is connected to the cab located in front of the traveling direction.
[0033]
In the flowchart shown in FIG. 5, the flow line located on the rightmost side indicates that a maintenance vehicle approach alarm device is attached to the driver's cab of the first maintenance vehicle when traveling with two maintenance vehicles connected. If the vehicle is not the first maintenance vehicle, the maintenance vehicle approach warning device is turned off. In the flowchart shown in FIG. 5, whether or not it is the first maintenance vehicle is automatically confirmed in conjunction with the maintenance vehicle connection operation.
[0034]
Next, the operation | movement aspect of a safe traveling apparatus is demonstrated with reference to the indicator 2 shown in FIG. 2, and the flowchart of FIG. This safe driving device is a device for preventing the driver from falling asleep while driving, and when there is no signal input from the driver at regular intervals, it is determined that the driver is falling asleep and compressed air is sent to the driver. when the spraying was to be Satoshima eyes, still drowsy persists, so that to forcibly stop the maintenance vehicles. For example, when the maintenance vehicle finishes a predetermined operation and starts traveling for forwarding or the like, and the speed becomes 5 Km / h or more, a display lamp of “5 Km / h or more” on the display 2 shown in FIG. Lights up. The vertical “bar display” lamps are sequentially turned on at regular intervals.
[0035]
While driving at such a speed of 5 km / h or more, the driver continues the confirmation switch signal to the control device 1 continuously for 5 seconds or more by a foot switch or the like (for example, when the foot switch or the like is released). Then, a 20-second timer starts. It is determined that this stepping is a doze, and when the time is up for 20 seconds, the alarm lamp is turned on and a buzzer alarm is turned on. Then, simultaneously with this alarm, the 2-second timer and the 5-second timer are started, and when the 2-second timer expires, the control device 1 opens the air blowing solenoid valve. As a result, compressed air is blown out to the vicinity of the driver's face, calling attention to wake up. When 3 seconds elapse from the air blowing, the air automatically stops. It is also possible to keep blowing out continuously. On the other hand, when the 5-second timer expires, the brake is automatically operated to forcibly stop the maintenance vehicle, and at the same time, the “brake operation” lamp is turned on.
[0036]
When the driver wakes up by blowing out the air and operates a foot switch or the like to output a confirmation switch signal again, the brake is released if the brake is in operation. The 40 second timer is reset, and if the lamp is on, it 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 the confirmation switch signal is input again until 40 seconds elapse. If not, it is determined that the patient is dozing, and the same control as in the case of the time-up of the 20-second timer is performed.
[0037]
In short, when the speed of the maintenance vehicle reaches 5 km / h or more, the safe traveling device determines that the driver is dozing unless the confirmation switch is operated within a certain period of time. The safety is established by blowing out or forcibly braking and stopping the maintenance vehicle.
[0038]
By the way, this invention is not limited to embodiment mentioned above, For example, the time which blows off compressed air, the setting time of various timers, etc. can be changed suitably.
[0039]
【The invention's effect】
As described above, in the present invention, if the driver does not input a confirmation signal at regular intervals, the driver is alerted by an alarm lamp, alarm buzzer or voice message, or compressed air is blown . it is possible to prevent the dozing in. In addition, when a predetermined time elapses after neglecting the basic operation, it is possible to reliably prevent the occurrence of an accident based on a human error or the like by forcibly operating the brake.
[0040]
In the present invention, runaway prevention device, the rolling prevention device, maintenance vehicles proximity warning control device, and overall driving safety equipment is controlled by one control device, there is no such forgotten of power to each device, It is possible to ensure that each device functions to ensure safe work.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing input / output of signals in a control device provided in a maintenance vehicle .
FIG. 2 is a front view showing an indicator provided in the maintenance vehicle .
FIG. 3 is a flowchart illustrating an operation mode of the escape prevention device for a maintenance vehicle .
FIG. 4 is a flowchart illustrating an operation mode of a rolling prevention device for a maintenance vehicle .
FIG. 5 is a flowchart illustrating an operation mode of the maintenance vehicle approach warning control device.
FIG. 6 is a flowchart illustrating an operation mode of the safe traveling device according to the present invention.
[Explanation of symbols]
1 ... Control device 2 ... Display

Claims (1)

  While the maintenance vehicle is running, if the driver does not receive a confirmation signal at regular intervals, or if the confirmation signal continues to be input for a specified time or longer, the driver's attention is drawn and the brake is automatically applied. A safe traveling device to be operated, including compressed air blowing means, a control device for controlling the operation of a brake, a confirmation signal input means, a timer that is activated when a confirmation signal is input in pulses, and a confirmation signal And a timer that is activated when the input continues for a predetermined time or more, and when one of the two timers expires after the activation, it is set to blow compressed air to the driver and activate the brake. Maintenance characterized in that the timer is set to be reset when a confirmation signal is input as a pulse before the timer expires Vehicle safety travel device.

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