JP2938410B2 - 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 the 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
When the left and right rails are short-circuited by the train wheel and the axle, they use an operating contact type relay that recovers and operates when there is no short-circuit.When the relay is restored and the operating contact opens, the train is on line recognize.

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

[0005] An automatic train control (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. The instruction is usually transmitted from the ground to the train by causing a specific signal current (alternating current) to flow through the track circuit and inducing a current in a power receiver attached to the lower part of the train by electromagnetic induction. ing.

When transmission of the ATC signal to the track circuit is stopped due to a failure of the automatic train control device, each train receives a stop instruction from the automatic train control device in order to ensure safety. It is set to interpret.
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 outage is restored, shutting off roads and traffic, and causing traffic congestion.

The present invention has been made in view of such problems of the prior art, and separates the power supply to the railroad crossing itself from the power supply to a control system such as a train detector and an automatic train control device. It is an object of the present invention to provide a power failure level railroad crossing noise suppression device that can stop sounding of a railroad crossing while ensuring safety when only a control system fails in a power supply system.

[0010]

The gist of the present invention to achieve the above object lies in the following invention. [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).
The power supply system according to claim 1, wherein the second power supply system (85) suppresses the sound of the railroad crossing while ensuring safety when a power failure occurs in the second power supply system (85). When the power supply system (85) is out of power, a battery unit (33) for temporarily supplying power to the train detection means and the automatic train control device and the second power supply system (85) are replaced by A first power supply disconnecting means (52) for disconnecting power supply from the battery unit (33) to the automatic train control device when a power failure occurs or a predetermined time has elapsed after the power failure, and the first power supply disconnecting means ( 52) cuts off the power supply to the automatic train control device, and when a predetermined stop time longer than the time required for the train to make an emergency stop from the predetermined maximum speed has elapsed, the battery unit (3)
From 3) the second to cut off the power supply to each train detection means
The power supply disconnecting means (42, 53) and the train detecting means in the railroad crossing control section (29) when the second power supply disconnecting means (42, 53) disconnects power supply to the train detecting means. And a sound suppression device (30) for controlling the railroad crossing so as not to ring even when the presence of the railroad track is detected.

The present invention operates as follows. The 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 the train exists in the corresponding track circuit, and cuts off the power supply. When the train detection means set to detect the train's on-rail and a predetermined signal is transmitted from the ground to each train on the track to indicate the maximum speed limit and the transmission of the signal is stopped An automatic train control device configured to recognize that each train on the track has received the stop instruction, and each level crossing includes a plurality of track circuits existing in a level crossing control section (29) up to a predetermined distance in front thereof. When any one of the train detection means provided corresponding to the above detects the presence of a train, it sounds.

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 power failure is temporarily connected to the train detection means and the automatic train control device instead of the second power supply system (85) when a power failure occurs. 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 has elapsed after the power failure, the train running between stations at the time of the power failure can safely arrive at the next station. Therefore, it is possible to set a state in which the train cannot be moved.

The second power supply disconnecting means (42, 53)
When a predetermined stop time longer than a time required for an emergency stop of the train from a predetermined maximum speed elapses after the power supply cutoff means (52) cuts off the power supply to the automatic train control device, the battery is turned off. The power supply from the section (33) to each train detecting means is cut off.

Accordingly, the train detector operates until the time required for the stop required for the train to stop reliably has elapsed. During this time, when the train is on the railroad crossing control section (29), the railroad crossing sounds. In this case, a normal railroad crossing operation of not ringing when there is no line in the section is secured.

When the second power supply disconnecting means (42, 53) cuts off power supply to the train detecting means, the train detecting means in the railroad crossing control section (29) detects the presence of the train. Control so that the railroad crossing does not ring even if it is detected.

That is, the second power supply disconnecting means (42, 5
When the power supply to the train detecting means is stopped in 3), the train detector detects the presence of the train regardless of whether or not the train is in the railroad crossing control section (29). 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 (67). At this point, the train has already stopped, so there is no need to ring the railroad crossing.

The sound suppression means (67) forcibly excites, for example, a railroad crossing control relay in which the operating contacts of the relays of the train detection means of the railroad crossing control section (29) are connected in series in an excitation circuit. The sound of a railroad crossing can be suppressed.

[0020]

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 (6T) 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.

At the railroad crossing 10, 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, an automatic train control device (ATC) (not shown) is introduced in this railway system, and the maximum train for the succeeding train is determined according to 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 uses a specific A
Various instructions are transmitted from the ground to the train by transmitting a TC signal and inducing a current in a power receiver attached to a lower part of the train by an electromagnetic induction phenomenon. Note that the automatic train control device can transmit an instruction having different contents for each track circuit.

The ATC signal transmitted by 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 stops. , 02 signal indicates an emergency stop. Code up (UP) to increase the code in the direction to ease the restriction 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 an emergency stop is started.

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
Are supplied with power from the first substation 80.

The power cut-off noise suppression device 30 receives power from a 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 is
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 in 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, a power failure U operation recovery contact 67 operated by the power failure U relay 42 is provided at a position closer to the DC relay 61 than the 2T operation contacts 62 to 6T operation contacts 66. When the power failure U relay 42 is operating, the power failure U operation restoration contact 67 is on the operation contact side, and the DC relay 61 is excited 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 restored, the power failure U operation restoration contact 67 is on the restoration contact side, and the DC relay 61 is excited through a certain path such as the 6T operation contact 66.

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 in a state of being excited through the 2T operation contacts 62 to 6T operation contacts 66. Therefore, when a train is present in the railroad crossing control section 29, the DC relay 61 is restored, the railroad crossing 10 sounds, and the railroad crossing control section 2
When no train is on line 9, DC relay 61 operates,
The railroad crossing 10 is maintained in a normal operating state in which it does not ring. 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, and the power failure R operation contact 52 is opened to stop supplying power to the automatic train control device. 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 failure R relay 41 is restored, the power failure R recovery contact 51 is turned on, and the power failure 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.

The train detector 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 restoration 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 restoration contact 67. become. For this reason,
Even if the train detector is not powered by the operation of the power failure U relay 42 and the 2T operation contacts 22 to 6T operation contacts 66 are opened, the DC relay 61 is in the excited state. As a result, the railroad crossing 10 does not ring.

When the sound of the railroad crossing 10 stops, the train may be present in the railroad crossing control section 29. However, at the time of stopping the ringing, the train stops completely and the ATC signal is cut off, so that the train cannot move. It is in condition and there are no safety issues.

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.
The sound of the railroad crossing 10 can be stopped while ensuring safety.

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. In this way, when the second substation 85 is out of power, the railroad crossing can be operated as usual until the train arrives at the next station while the train is running between stations, and the train stops between stations. It is possible to prevent a situation in which the vehicle is left in a state where the passengers are in trouble and the passengers are inconvenienced.

[0041]

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.

[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

Continuation of front page (72) Inventor Takashi Jumonji 2-29-1, Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Keiyo Seisakusho Co., Ltd. (56) References JP-A-7-29614 (JP, A) 1984-59 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B61L 29/00-29/32

Claims (1)

(57) [Claims] 1. A train detecting 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 for a plurality of track circuits within a railroad crossing control section up to a predetermined distance before the railroad crossing detects a train on-rail, and each train on the railroad track An automatic train control device that is set to instruct the maximum speed limit by transmitting a predetermined signal from the ground toward and to recognize that each train on the track has received a stop instruction when the transmission of the signal is lost And a railway system configured to supply power to the railroad crossing from a first power supply system and to supply power to the train detection means and the automatic train control device from a second power supply system. 2. A power-supply railroad crossing noise suppression device that suppresses the sounding of the railroad crossing while ensuring safety when the power supply system of the second power supply system is blacked out. Means and a battery unit for supplying power to the automatic train control device; and a power supply from the battery unit to the automatic train control device when the second power supply system loses power or when a predetermined time has elapsed after the power failure. A first power supply disconnecting means for disconnecting the power supply to the automatic train control device from the first power supply disconnecting means, and a time required for the train to emergency stop 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 long predetermined stoppage time elapses; Cut off supply Train detection means train power failure crossing ringing suppression apparatus for a sound suppression means also detects the rail control so that the crossing is not ringing, characterized by comprising of the crossing control in the interval time.