JPH082020Y2 - Railroad crossing control device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level crossing control device for ensuring the safety of a level crossing.

[0002]

2. Description of the Related Art On a level crossing, in order to maintain safety between train operation and road traffic, the level crossing protection device is operated when the train enters a section with a level crossing, and when the train reaches the level crossing end point. The operation of the security device has been canceled.

In the conventional section, the crossing end point control is performed by detecting a signal wave for detecting the crossing end point superimposed on the commercial frequency for closing control. In case of ATC section, A
Since the signal wave for train detection is sent separately from the TC signal wave, the signal wave for level crossing control without mutual interference with these signal waves cannot be flowed, and the signal wave for level crossing control is used as a train. It uses a signal wave for detection. The signal wave for train detection in the non-insulated track circuit is transmitted from the middle of the two track circuits. Therefore, the signal wave for train detection flowing in the track circuit flows in the forward direction and the reverse direction. In order to control the crossing end point, a signal wave in the reverse direction is required, and the signal wave flowing in the reverse direction among the signal waves for train detection is received by the voltage / current receiving method so as not to interfere with reception. A method of controlling is adopted.

[0004]

However, in the forward section of the signal wave for train detection, there is no backward signal wave for controlling the crossing end point, so the track circuit configuration for the crossing end point control is Needed separately. As a result, the track circuit configuration becomes complicated, and the independence of the track circuit for blocking and the uniformity of the track circuit configuration are impaired.

[0005] This invention has been made to solve the above disadvantages, and aims at obtaining a railroad crossing control device capable of transmitting a signal wave for the crossing end point control with a simple configuration is there.

[0006]

Means for Solving the Problems] crossing control device according to this invention has ATC transmitter (8) crossing the transmitter (9) crossing receiver and (10), ATC transmitter (8) ATC
The signal wave is transmitted from the front to the approach section of the train (20).
Therefore, the train is the boundary point on the approach side of the track circuit (10TR).
When entering (1), the coil is excited and the train progresses.
Track circuit (11TR) with railroad crossing (21) in front of you
Of the coil when moving from the boundary point (3) on the moving side of
The operation contact and step of the transmission control relay (CSC) whose magnetism is cut off
Track circuit (11T) with break (21) Entry boundary point
When the train (20) enters (2), the coil excitation is
Via the operating contact of the broken orbital relay (11TR)
Boundary point on approach side of track circuit (11TR) with railroad crossing
Is connected to (2) and operates the transmission control relay (CSC).
Step on the working contact and the recovery contact of the orbit relay (11TR)
Boundary point on the advancing side of the track circuit (11TR) having a cutoff
Connected to (3), the level crossing transmitter (9) is a track circuit (11T) in which the train has a level crossing with a signal wave required for crossing end point control.
R) is to be transmitted from the rear of the train after entering the approach side boundary point (2), and the track relay (11TR)
It is connected to a boundary point (2) on the approach side of a track circuit (11TR) having a railroad crossing via a restoration contact, and a railroad crossing receiver (10).
Receives a signal wave required for control of the crossing end point, and the crossing (21) of the track circuit (11TR) having the crossing
And a boundary point (3) on the advancing side .

[0007]

The transmission of the ATC signal wave in the non-insulated track circuit is a step-in transmission system in which transmission is performed only in the approach section of the train in order to prevent interference reception with signals in adjacent sections. In this step-in transmission system, when the train enters the block boundary, the ATC signal transmission point moves to the front block boundary point and transmits the ATC signal from the forward direction, and the transmission points up to that point are released from the ATC transmitter. It becomes a state. On the other hand, the signal wave for controlling the railroad crossing end point needs to be transmitted from the direction opposite to the traveling direction of the train from the time when the train leaves the block boundary point, and the transmission logic of the ATC signal wave has an inverse relationship. Become. This means that it is not necessary to transmit the ATC signal wave and the signal wave for controlling the railroad crossing end point at the same time, and the signal waves can be switched and transmitted to the same transmission point. Moreover, A
Since the presence or absence of a train can be detected by a signal wave for train detection in the TC section, it is sufficient to transmit a signal wave for control of the crossing end point only when the train exists in the track circuit for blockage.

Therefore, in this invention, when the train enters the closed boundary and the ATC transmitter switches to the forward closed boundary point, the railroad crossing is transmitted to the boundary point of the track circuit which was transmitting the ATC signal before the change. The signal line for controlling the crossing end point is transmitted in the opposite direction of the train progress by using the track circuit for blockage.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention. As shown in the figure, the track circuit 10T and the track circuit 11T
ATC signal transmission unit 5b and a train detection signal (hereinafter referred to as TD signal) transmission unit 6 are connected to the boundary point 2 of the railroad circuit 9T and the track circuit 10T via the matching transformer 4b. Boundary point 3 between track circuit 11T and track circuit 12T
The ATC signal transmitters 5a and 5c and the TD signal receivers 7a and 7c are connected to the ATC signal transmitters 5a and 5c via matching transformers 4a and 4c, respectively.

A train is a track circuit in the ATC signal transmitter 5b.
The coil is energized when entering the boundary point 1 on the entry side of 10TR.
A track track that is magnetized and has a railroad crossing 21 ahead of the direction of travel.
Carp when exiting from border point 3 on the exit side of Road 11TR
ATC transmitter 8 via an operating contact of a transmission control relay CSC (referred to as a contact formed when a coil is excited) and an operating contact of an orbital relay 11TR in which the excitation of the coil is cut off.
Is connected, and the ATC signal wave sent from the ATC transmitter 8 is transmitted only when the train 20 is in the track circuit 10T.
Send to 0T. The ATC signal transmitter 5c is connected to the ATC transmitter 8 via an operation contact of the transmission control relay CSC and a recovery contact of the track relay 11TR (referred to as a contact formed when the excitation of the coil is cut off). Only when 20 is in the track circuit 11T, the ATC signal wave sent from the ATC transmitter 8 is transmitted to the track circuit 11T.

The ATC signal transmitter 5b has a track circuit.
The railroad crossing transmitter 9 is connected via the operation contact of the slow-release relay XSC that is excited when the train 20 enters 11TR, and is transmitted from the railroad crossing transmitter 9 only when the train 20 is in the track circuit 11T having the railroad crossing 21. The crossing signal wave generated is transmitted to the track circuit 11T. The railroad crossing receiver 10 is connected between the railroad crossing 21 of the track circuit 11T and the boundary point 3 on the advancing side via a matching transformer 4d. The level crossing signal wave sent from the level crossing transmitter 9 is set to A in order to prevent the ATC onboard device from being affected even when a continuing train approaches.
A frequency that avoids the frequency band of the ATC signal wave transmitted by the TC transmitter 8 is used.

The operation of the level crossing control device configured as described above will be described with reference to the operation state diagram of FIG.

The train 20 moves from the track circuit 9T to the track circuit 10
When entering T, the coil of the transmission control relay CSC is excited and the ATC signal wave sent from the ATC transmitter 8 is transmitted to the AT.
Track circuit 10T via C transmitter 5b and matching transformer 4b
Send in the forward direction of the train. When the train 20 reaches the boundary point 2 and enters the track circuit 11T with a TD signal, and the track relay 11TR falls, the ATC signal wave sent from the ATC transmitter 8 is forwarded from the ATC transmitter 5b. Switching to the transmission unit 5c, the matching transformer 4c
Is transmitted in the forward direction of the track circuit 11T having the railroad crossing 21 via. Simultaneously with the switching of the transmission point of the ATC signal wave, the coil of the slow release relay-XSC is excited, and the level crossing signal wave sent from the level crossing transmitter 9 is matched with the ATC transmission unit 5b and the matching transformer 4.
It transmits to the track circuit 11T via b from the reverse direction of the train advancing direction.

In this way, the train 20 turns into the track circuit 11T.
When the ATC transmitter 5b is opened from the ATC transmitter 8 and the crossing signal wave is transmitted, only one signal wave can be passed between the train 20 and the boundary point 2.

When the train 20 enters the track circuit 11T, the coil of the alarm relay CR is deenergized and the alarm relay CR is disconnected.
Is restored and an alarm is issued at railroad crossing 21. Train 20 crossing 2
After passing 1, the crossing signal wave passing through the receiving point of the crossing signal wave and flowing in the track circuit 11T by the crossing receiver 10 is detected, the coil of the relay XR is excited, and the alarm relay is released.
The CR is operated to cancel the alarm issued at the railroad crossing 21. When the train 20 further advances and reaches the boundary point 3 on the advance side of the track circuit 11T and enters the track circuit 12T, the excitation of the coil of the transmission control relay CSC is cut off, and the transmission point of the ATC signal wave is the track circuit 12T. Proceed to the border point on the advance side of.
When the train 20 completes the entry into the track circuit 12T and some time passes after the track relay 11TR is operated, the operation contact of the slow release relay XSC is separated, and the crossing transmitter 9 and the AT are connected.
The C transmission section 5b is cut off, and the crossing signal wave is transmitted to the track circuit 11
Stop flowing to T. In this case, alarm relay C
Since R is driven by the operating contact of the track relay-11TR, the railroad crossing alarm remains stopped. In this way, the railroad crossing signal wave is transmitted only when the train 20 is present in the track circuit 11T having the railroad crossing 21.

In the above embodiment, the ATC transmitter 8 and the level crossing transmitter 9 are separately provided.
It is also possible to provide a crossing signal wave output section in the C transmitter 8 and share the crossing transmitter with the ATC transmitter 8.

[0017]

As described above, according to the present invention, when the train enters the block boundary and the ATC transmitter switches to the front block boundary point, the track circuit that was transmitting the ATC signal before the switch was detected. Connect the level crossing transmitter to the boundary point,
Since the signal wave for the crossing end point control is transmitted in the reverse direction of the train using the blocking track circuit, the crossing circuit is not provided separately for the crossing control, and the crossing is ensured with a simple configuration. End point control can be performed.

Further, since the railroad crossing control signal does not always flow on the track, frequency interference such as cross modulation with the train detection signal (TD signal) is eliminated, and the number of railroad crossing control signal waves can be reduced. .

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is an operation state diagram of the above embodiment.

[Explanation of symbols]

 1, 2 and 3 Track circuit boundary points 5a to 5c ATC signal transmitter 8 ATC transmitter 9 Level crossing transmitter 10 Level crossing receiver

Claims (1)

[Scope of utility model registration request] 1. An ATC transmitter (8) and a railroad crossing transmitter (9)
And a crossing receiver (10), and the ATC transmitter (8) transmits an ATC signal wave from the front to the approach section of the train (20).
The train is on the entry side of the track circuit (10TR).
The coil is excited when entering the boundary point (1), and the train
Is a track circuit (11) having a railroad crossing (21) ahead of the traveling direction.
When entering from the boundary point (3) on the entry side of (TR)
Operation of the transmission control relay (CSC), in which the excitation of the cable is cut off.
Entry side of track circuit (11T) with points and level crossings (21)
When the train (20) enters the boundary point (2),
The contact of the orbital relay (11TR) whose excitation is cut off
Border of the approach side of the track circuit (11TR) having a railroad crossing
The transmission control relay (CSC) connected to the field point (2)
Via the operation contact of the and the recovery contact of the orbital relay (11TR)
Boundary point on the advancing side of a track circuit (11TR) with a railroad crossing
Connected to (3), the level crossing transmitter (9) is a track circuit (11T) in which the train has a level crossing with a signal wave required for crossing end point control.
R) is to be transmitted from the rear of the train after entering the approach side boundary point (2), and the track relay (11TR)
It is connected to a boundary point (2) on the approach side of a track circuit (11TR) having a railroad crossing via a restoration contact, and a railroad crossing receiver (10).
Receives a signal wave required for control of the crossing end point, and the crossing (21) of the track circuit (11TR) having the crossing
A crossing control device, characterized in that it is connected between the advancing side boundary point (3) .