JP2938411B2 - Railroad crossing noise suppression device during power outage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway which supplies power to a railroad crossing from a first power supply system and supplies power to a train detecting means and an automatic train control device from a second power supply system. The present invention relates to a power failure level railroad crossing noise suppression device that suppresses unnecessary noise of a railroad crossing while ensuring safety when a second power supply system fails in a system.

[0002]

2. Description of the Related Art A railroad crossing control section from a railroad crossing to a predetermined distance before is usually composed of a plurality of track circuits. When a train exists in any of the track circuits in the section, the railroad crossing sounds. Has become.

[0003] Each track circuit is provided with a train detector for detecting whether or not a train exists. The train detector is
It has an operating contact type relay that recovers when the left and right rails are short-circuited by the train wheel and axle, and operates when there is no short circuit, and that when the relay is restored and the operating contact opens, the train is on line recognize.

[0004] Therefore, if a failure occurs that interrupts the power supply to the train detector, the relay is restored and a state similar to that where the train is on is formed, and the railroad crossing sounds. Safety is ensured.

[0005] Conventionally, an automatic train control device (ATC) has been introduced to ensure the safety of train operation. The automatic train control device instructs the succeeding train at the maximum speed limit in accordance with the occupied position of the preceding train recognized based on the signal from each train detector. Such instructions are usually
By transmitting a specific signal current (AC) to the track circuit and inducing an electric current in a power receiver attached to the lower part of the train by electromagnetic induction, the signal is transmitted from the ground to the train.

Also, due to a failure of the automatic train control device,
When the transmission of the ATC signal to the track circuit is stopped, each train is set to be interpreted as receiving a stop instruction from the automatic train control device in order to ensure safety.
However, even when a stop instruction is received from the automatic train control device, a low-speed traveling of 15 km / h or less can be performed in an emergency by manual operation of the driver. Conventionally, power supply to railroad crossings, train detectors, automatic train control devices, and the like has been performed from the same substation by the same power supply system.

[0007]

Conventionally, power supply to a railroad crossing, a train detector, an automatic train control device, and the like has been performed from the same power supply system. A system has been proposed in which power is supplied to a control system such as a detector or an automatic train control device from another power supply system.

[0008] In such a case, if only the control system loses power, the automatic train control unit stops transmitting the ATC signal, so that each train stops urgently. However, when the power failure occurs, the train detector detects the presence of the train. Therefore, there is a problem that the railroad crossing sounds all the time until the power failure recovers, interrupting the road traffic and causing traffic congestion.

[0009] Further, even when the transmission of the ATC signal from the automatic train control device is stopped, there is a demand that the train be run at low speed in an emergency, but the sound of the railroad crossing is simply forcibly stopped at the time of the power failure. Could not respond to such a request.

The present invention has been made in view of such problems of the prior art, and separates power supply to a railroad crossing itself from power supply to a control system such as a train detector and an automatic train control device. In the power supply system, it is possible to stop unnecessary sounding of a railroad crossing while ensuring safety when only the control system loses power, and to sound the railroad crossing when a train running in emergency approaches the railroad crossing. It is an object of the present invention to provide a railroad crossing noise suppression device at the time of a power failure.

[0011]

The gist of the present invention to achieve the above object lies in the following inventions. [1] Train detection means provided for each track circuit and configured to detect whether a train is present in a corresponding track circuit and to detect the presence of a train when power supply is cut off, Railroad crossing control section (2
9) A railroad crossing that sounds when any of the train detection means provided corresponding to a plurality of track circuits in the train detects the presence of a train, and a predetermined signal from the ground for each train on the track. An automatic train control device set to instruct the maximum speed limit by transmitting a signal and to recognize that each train on the track has received a stop instruction when the transmission of the signal is stopped, and to the level crossing A power supply is performed from a first power supply system (80) and a power supply to the train detection means and the automatic train control device is performed by a second power supply system (85).
In a railway system designed to be operated from the above, a power failure level railroad crossing noise suppression device (3) that suppresses unnecessary noise of the railroad crossing while ensuring safety when the second power supply system (85) is blackout.
0), when the second power supply system (85) has a power failure, a battery unit (3) for temporarily supplying power to the train detection means and the automatic train control device instead of the power supply system (85)
3) and the battery unit (3) when the second power supply system (85) loses power or when a predetermined time has elapsed after the power failure.
3) a first power supply disconnecting means (52) for disconnecting power supply to the automatic train control device, and a first power supply disconnecting means (5).
2) When the power supply to the automatic train control device is cut off and a predetermined stop time longer than a time required for the train to make an emergency stop from a predetermined maximum speed has elapsed, the battery unit (33) ), A second power supply disconnecting means (42, 53) for disconnecting power supply to each of the train detection means, and the second power supply disconnecting means (42, 53) disconnecting power supply to the train detection means. The uninterruptible power supply for supplying power to some of the train detection means in the railroad crossing control section (29) corresponding to the track circuit near the railroad crossing, and the second power supply cutoff means (42, 53) When the power supply to the train detecting means is cut off, the train detecting means not receiving power supply from the uninterruptible power supply among the train detecting means in the railroad crossing control section (29) detects the presence of a train. Even the said crossing does not ring Ringing suppression means (42 for controlling the,
67) A power-off railroad crossing noise suppression device (30), comprising:

The present invention operates as follows. A railroad system to which the power cutoff noise suppression device (30) according to the present invention is applied is provided for each track circuit, detects whether or not a train exists in a corresponding track circuit, and detects when a power supply is cut off. A train detection means set to detect the presence of a train, and a maximum speed limit is indicated by transmitting a predetermined signal from the ground to each train on the track, and a track when transmission of the signal is stopped An automatic train control device set to recognize that each of the above trains has received the stop instruction, and each level crossing is provided to a plurality of track circuits in a level crossing control section (29) up to a predetermined distance before the level crossing. A sound is generated when any of the corresponding train detection means detects the presence of a train.

Power is supplied to the railroad crossing from the first power supply system (80), and power is supplied to the train detection means and the automatic train control device from the second power supply system (85).

The battery section (33) included in the railroad crossing noise suppression device (30) at the time of a power failure is temporarily connected to the train detection means and the automatic train control device when the second power supply system (85) has a power failure. Supply power. First power supply disconnecting means (52)
Cuts off the power supply from the battery unit (33) to the automatic train control device when the second power supply system (85) has a power failure or when a predetermined time has elapsed after the power failure.

When the power supply to the automatic train control device is cut off, A
Since the transmission of the TC signal is interrupted, each train starts an emergency stop. In the case where power is supplied to the automatic train control device and the like from the battery unit (33) until a predetermined time elapses after the power failure, the train running between stations at the time of the power failure safely arrives at the next station. , Can be set to a state where the train can not move.

The second power supply disconnecting means (42, 53)
When a predetermined stop time longer than the time required for the train to emergency stop from the predetermined maximum speed has elapsed since the power supply disconnecting means (52) cut off the power supply to the automatic train control device, The power supply from the battery unit (33) to the train detection means not driven by the power failure power supply is cut off.

Therefore, all the train detectors operate until the time required for the stop required for the train to stop without fail has elapsed. During this time, when the train is present in the railroad crossing control section (29), the railroad crossing is stopped. A normal railroad crossing operation of sounding and not sounding when not on the section is ensured.

When the second power supply disconnecting means (42, 53) cuts off the power supply to the train detecting means which is not driven by the uninterruptible power supply, the sound suppression means (42, 67) performs the railroad crossing control section (2, 67).
9) Control so that the railroad crossing does not ring even if the train detecting means not driven by the uninterruptible power supply detects the train presence.

That is, the second power supply disconnecting means (42, 5
When the power supply to the train detection means that is not driven by the uninterruptible power supply stops due to 3), the train detector in the section relatively far from the railroad crossing in the railroad crossing control section (29) loses power, regardless of whether the train is on line. The state of the train is detected. The railroad crossing will start ringing as it is, but the ringing of the railroad crossing is suppressed by the control of the ringing suppression means (42, 67).

Further, since the train detector in the section near the railroad crossing is driven by the uninterruptible power supply, the railroad crossing can be sounded when a train running at an emergency low speed enters the corresponding section. . The traveling speed in emergency handling is 15km
Since the speed is limited to the following low speed, sufficient safety can be secured by driving the section near the railroad crossing with the uninterruptible power supply in this way.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show one embodiment of the present invention. As shown in FIG. 2, first to eighth track circuits 21 to 28 are formed before and after the level crossing 10, and the level crossing 10 exists in the sixth track circuit 26. The section from the second track circuit (2T) 22 to the sixth track circuit (F6T) 26 is a railroad crossing control section 29.

Each of the track circuits 21 to 28 is provided with a train detector (not shown). As described above, the train detector uses an operating contact type relay that recovers when the left and right rails are short-circuited by the train wheel and axle, and operates when there is no short-circuit. When the operating contact is opened, it is recognized that the train is on the train. Track circuit 25, track circuit 2
The train detector corresponding to No. 6 is powered by an uninterruptible power supply (here, the battery unit 33 is used as the uninterruptible power supply).

In a normal state, when a train is on any of the second to sixth track circuits 22 to 26, the circuit breaker gets off and the alarm sounds. In addition, the railway system incorporates an automatic train control device (ATC) (not shown), and the following trains have the highest occupancy depending on the occupied position of the preceding train recognized based on the signal from each train detector. An ATC signal indicating a speed limit is transmitted.

The automatic train control device applies various signal currents (alternating currents) to the track circuit and induces a current in a power receiver attached to the lower part of the train by electromagnetic induction, so that various types of signals are transferred from the ground to the train. Transmitting instructions. Note that the automatic train control device can transmit an instruction having different contents for each track circuit.

The ATC signal transmitted from the automatic train control device is assigned a name corresponding to the maximum speed limit. For example, 15 signals indicate that the maximum speed limit is 15 km / h, and 01 signal indicates that the train is stopped. , 02 signal indicates an emergency stop. Code up (UP) to increase the code in the direction to ease the regulation of the maximum speed limit, such as changing from 01 signal to 15 signal
I'm calling

When the ATC signal from the automatic train control device is interrupted, each train on the track is interpreted as having received a stop instruction, and starts an emergency stop. Even in such a state, the train can travel at a low speed of 15 km or less as an emergency by manual operation of a driver.

FIG. 1 shows the outline of a railroad crossing noise suppression device 30 at the time of a power failure and its peripheral devices. Railroad crossing 10
Is composed of a level crossing equipment box 13 and a level crossing insulation transformer 14 that house a circuit breaker 11 and a warning light 12 as well as various devices for actually driving them. Railroad crossing 10
Receives power from the first substation 80.

The power cut-off device 30 for suppressing the railroad crossing noise is supplied with power from the second substation 85. The railroad crossing noise suppression device 30 at the time of a power failure includes an insulating transformer 31 that receives power supply from the second substation 85, a rectifier 32 that rectifies the output of the insulating transformer 31, and a battery unit 33 that is charged by the output of the rectifier 32. doing.

Further, the railroad crossing noise suppression device 30 at the time of power failure
A power failure R relay 41 that is energized and operated while being supplied with power from the substation 85, and a current-time elementary power failure U relay 42 that is excited and operates by being supplied with power from the battery unit 33. The power failure U relay 42 operates approximately 33 seconds after the start of excitation.

The outputs of the rectifier 32 and the battery unit 33 become an ATC power supply 45 for supplying power to an automatic train control device (ATC) (not shown) and a TD power supply 46 for supplying power to each car train detector. ing.

The excitation circuit of the power failure U relay 42 includes a power failure R
Power failure R restoration contact 51 which conducts when relay 41 is restored
Is provided. The rectifier 32 and the battery unit 33
A power failure R operation contact 52 that is conductive when the power failure R relay 41 is operating is connected in series in a power path from the power supply to the ATC power supply 45. Further, a power failure U recovery contact 53 that opens when the power failure U relay 42 operates is connected in series in a power supply path toward the TD power supply 46.

The rectifier 32 and the battery unit 33 serve as a power supply for exciting a DC relay 61 for notifying the railroad crossing 10 that the train is on the railroad crossing control section 29. The 2T track circuit 2 is included in the excitation circuit of the DC relay 61.
2T operation contact 6, which is a contact of a train detection relay included in the train detector arranged corresponding to the 2-6T track circuit 26
2 to F6T operating contacts 66 are connected in series. The relay provided in the train detector is normally excited by power supply from the TD power supply 46.

In the excitation circuit of the DC relay 61, between the 4T operation contact 64 and the F5T operation contact 65, the power failure U relay 42
A power failure U operation recovery contact 67 is provided. When the power failure U relay 42 is operating, the power failure U operation recovery contact 67 is on the operating contact side, and the DC relay 61
Is excited by receiving power supply from the battery unit 33 through the operation contact of the power failure U operation restoration contact 67. On the other hand, when the power failure U relay 42 is recovered, the power failure U operation recovery contact 6
Reference numeral 7 denotes a recovery contact side, and the DC relay 61 is excited through a certain path such as the 2T operation contact 62 or the like.

Next, the operation will be described. The first substation 80,
When both the second substations 85 do not have a power failure, the power failure R relay 41 of the railroad crossing noise suppression device 30 at the time of power failure is excited and is operating. Therefore, the power failure R operation contact 52 is turned on, and power is supplied to the automatic train control device. Power outage R
By the operation of the relay 41, the power failure R recovery contact 51 is opened, and the power failure U relay 42 is in a recovered state. Therefore, the power failure U recovery contact 53 is turned on, and power is supplied to each train detector.

Further, since the power failure U relay 42 has been recovered, the power failure U operation recovery contact 67 is on the recovery contact side,
The relay 61 is energized through the 2T operating contacts 62 to 4T operating contacts 64, the F5T operating contacts 65, and the F6T operating contacts 66. Therefore, the railroad crossing control section 29
When the train is on the train, the DC relay 61 is restored and the railroad crossing 10 sounds, and when the train is not on the railroad crossing control section 29, the DC relay 61 operates and the railroad crossing 10 does not ring. The state is secured. Further, while the power is supplied from the second substation 85, the battery unit 33 is charged.

When the second substation 85 experiences a power failure, the power failure R relay 41 is not energized and is restored, the power failure R operation contact 52 is opened, and power supply to the automatic train control device is stopped. As a result, the ATC signal from the automatic train control device is cut off, and each train on the track starts an emergency stop.

Further, when the second substation 85 is out of power and the power outage R relay 41 is restored, the power outage R restoration contact 51 is turned on, and the power outage U relay 42 is excited from the battery unit 33. The power failure U relay 42 operates over 33 seconds after the start of excitation, and when the operation is completed, the power failure U recovery contact 53 is opened.
This 33 seconds is set as the time required for the train to complete the emergency stop from the maximum speed and stop, and before the power failure U recovery contact 53 is opened, each train on the track is surely It will be in a stopped state.

Each of the train detectors receives power from the battery unit 33 for 33 seconds after the power failure of the second substation 85 until the power failure U recovery contact 53 is opened. Therefore, the train detector operates normally for 33 seconds after the operation of the automatic train control device stops, and detects the presence or absence of a train. For this reason, when there is a train in the middle of the emergency stop in the railroad crossing control section 29, the railroad crossing 10 sounds.

When the power failure U relay 42 operates, the power failure U operation recovery contact 67 switches to the operation contact side, and the DC relay 61 receives power directly from the battery unit 33 via the operation contact of the power failure U operation recovery contact 67. become. For this reason,
Even if a train detector that is not powered by the uninterruptible power supply loses power due to the operation of the power failure U relay 42 and the 2T operation contacts 62 to 4T operation contacts 64 are opened, the DC relay 61 can be excited. . As a result, the railroad crossing 10 does not ring, regardless of whether the train is on the second track circuit 22 to the fourth track circuit 24.

After an emergency stop, the train runs at low speed due to the emergency treatment of the driver, and the fifth or sixth track circuit 25,
When the train reaches the inside, the train detectors corresponding to these track circuits are driven by the uninterruptible power supply, so that the F5T operation contact 65 and the like are opened, and the excitation of the DC relay 61 is cut off.
For this reason, when the train enters the track circuit where the train detector is driven by the uninterruptible power supply, the railroad crossing 10 sounds.

As described above, when the second substation 85 loses power, first, the power supply to the automatic train control device is cut off, and each train starts an emergency stop, and each train on the track completes the emergency stop. After waiting for the necessary time, the power of the train detector was cut off and the DC relay 61 was forcibly excited.
Unnecessary ringing of the railroad crossing 10 can be stopped while ensuring safety.

Further, since the train detector near the railroad crossing is driven by an uninterruptible power supply, the railroad crossing can be sounded when a train arrives near the railroad crossing, and the train is handled in an emergency while ensuring sufficient safety. At low speed.

In the above-described embodiment, when the second substation 85 experiences a power failure, the power failure R relay 41 is immediately restored to cut off the power supply to the automatic train control device.
The power failure R relay 41 may be excited by the battery unit 33 for a certain period of time and then restored.

[0044]

According to the apparatus for suppressing a railroad crossing noise at a power failure according to the present invention, when power supply to a control system such as a train detector or an automatic train control device is cut off, a temporary transfer from the battery unit to the automatic train control device is performed. Power supply is first cut off to start the emergency stop operation of each train, and after the time required for each train on the track to complete the emergency stop, the battery unit supplies power to the train detector. And the sound of the railroad crossing is forcibly stopped, so that the sound of the railroad crossing can be stopped while ensuring safety.

Also, since the train detector near the railroad crossing is driven by the uninterruptible power supply, the railroad crossing sounds when the train arrives near the railroad crossing, and the train is run at low speed by emergency handling while ensuring sufficient safety. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outline of a power cut-off noise suppression device and its peripheral devices according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram schematically showing a track circuit in the vicinity of a railroad crossing under the jurisdiction of a power failure level railroad crossing noise suppression device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Railroad crossing 21-28 ... Track circuit 29 ... Railroad crossing control section 30 ... Railroad crossing sound suppression device 31 at power failure 31 ... Isolation transformer 32 ... Rectifier 33 ... Battery part 41 ... Power failure R relay 42 ... Power failure U relay 45 ... ATC power supply 46 ... TD Power supply 51: Power failure R recovery contact 52: Power failure R operation contact 53: Power failure U recovery contact 61: DC relay 62-66: Operation contact 67: Power failure U operation restoration contact 80: First substation 85: Second substation

──────────────────────────────────────────────────続 き Continuation of the front page (72) Takashi Jumonji 2-29, Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture 1 within the Kyosan Seisakusho Co., Ltd. (56) References JP-A-7-29614 (JP, A (58) Field surveyed (Int. Cl. ⁶ , DB name) B61L 29/00-29/32

Claims (1)

(57) [Claims] 1. A train detection means provided for each track circuit and configured to detect whether a train is present in a corresponding track circuit and to detect the presence of a train when power supply is cut off. A railroad crossing that sounds when any of the train detection means provided in correspondence with a plurality of track circuits in a railroad crossing control section up to a predetermined distance before the railroad crossing detects a train on-rail, and An automatic train control device that sets a maximum speed limit by transmitting a predetermined signal from the ground to a train and recognizes that each train on the track has received a stop instruction when transmission of the signal stops. And a railway system in which power supply to the railroad crossing is performed from a first power supply system and power supply to the train detection means and the automatic train control device is performed from a second power supply system. A power failure level railroad crossing noise suppression device that suppresses unnecessary sounding of the railroad crossing while ensuring safety when the second power supply system has a power failure, comprising: A battery unit for supplying power to the train detection means and the automatic train control device; and when the second power supply system is out of power or when a predetermined time has elapsed after the outage, the battery unit outputs the automatic train control device. A first power supply disconnecting unit that disconnects power supply to the automatic train control device, the first power supply disconnecting unit disconnects power supply to the automatic train control device, and then the train stops urgently from a predetermined maximum speed. A second power supply disconnecting unit that disconnects power supply from the battery unit to each of the train detection units when a predetermined stop place time longer than a required time elapses, and the second power supply disconnection unit detects the train detection. Power to the means An uninterruptible power supply for supplying power to some of the train detection means in the railroad crossing control section corresponding to the track circuit near the railroad crossing when the power supply is cut off; When the power supply to the detecting means is cut off, the train crossing does not sound even if the train detecting means not receiving power supply by the uninterruptible power supply among the train detecting means in the railroad crossing control section detects the presence of a train. And a sound suppressing means for controlling the sound level at the time of a power failure.