JPH0637046U - Railroad crossing control device - Google Patents

Abstract

(57) [Summary] [Purpose] To transmit a signal wave for crossing end point control with a simple configuration. [Structure] When the train 20 enters the block boundary and the ATC transmitter 8 switches to the front block boundary point, the crossing transmitter 9 is connected to the boundary point of the track circuit that was transmitting the ATC signal before switching. To do. A signal wave for controlling the railroad crossing end point is transmitted from the railroad crossing transmitter 9 in the reverse direction of the train progress using the track circuit for blocking.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a railroad crossing control device for ensuring the safety of a railroad crossing.

[0002]

[Prior art]

 To maintain safety between the operation of the train and road traffic on the railroad crossing, activate the railroad crossing protection device when the train enters a section with a railroad crossing, and operate the railroad crossing protection device when the train reaches the end point of the railroad crossing. It 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 that is superimposed on the commercial frequency for closing control. In the case of the ATC section, since a signal wave for train detection is being sent separately from the ATC signal wave, it is not possible to flow a signal wave for level crossing control without mutual interference with these signal waves. The signal wave for train detection is used as the signal wave for level crossing control. 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 and reverse directions. 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 the reception of the block. The method of crossing control is adopted.

[0004]

[Problems to be solved by the device]

 However, in the forward section of the signal wave for train detection, there is no signal wave in the reverse direction for crossing end point control, so a separate track circuit configuration is required for crossing point end point control. 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.

The present invention has been made to solve the above disadvantages, and an object of the present invention is to obtain a railroad crossing control device capable of transmitting a signal wave for railroad crossing end point control with a simple configuration. Is.

[0006]

[Means for Solving the Problems]

 The railroad crossing control device according to the present invention has an ATC transmitter, a railroad crossing transmitter, and a railroad crossing receiver, and the ATC transmitter transmits the ATC signal wave only from the front to the approach section of the train. The railroad crossing transmitter is connected to the crossing point of the railroad crossing and transmits the signal wave required for control of the crossing end point from the rear of the train after entering the approach side boundary of the track circuit where the train has crossing. The crossing receiver is connected to the boundary point on the approach side of the track circuit, and the crossing receiver receives the signal wave required for control of the crossing end point. It is connected to.

[0007]

[Action]

 The transmission of ATC signal wave in the non-insulated track circuit is a step-in transmission system that transmits only in the approach section of the train in order to prevent interference reception with signals in adjacent sections. In this step-in transmission method, 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 will be in a state of being. 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 closing boundary point, and the transmission logic of the ATC signal wave is in the opposite 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, since the presence or absence of a train can be detected by the signal wave for train detection between ATC sections, it is sufficient to transmit the signal wave for the control of the crossing end point only when the train exists on the track circuit for blockage. Yes.

Therefore, in this invention, when the train enters the block boundary and the ATC transmitter switches to the front block boundary point, the railroad crossing signal is transmitted to the boundary point of the track circuit that was transmitting the ATC signal before switching. The signal wave for controlling the railroad crossing end point is transmitted in the reverse direction of the train progress using the track circuit for blockage.

[0009]

【Example】

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

The ATC signal transmitter 5b is connected to the ATC transmitter 8 via an operation contact of the transmission control relay CSC (referred to as a contact formed when the coil is excited) and an operation contact of the track relay 11TR. Is connected and the ATC signal wave sent from the ATC transmitter 8 is transmitted to the track circuit 10T only when the train 20 is in the track circuit 10T. The ATC signal transmitter 5c is connected to the ATC transmitter 8 through the operation contact of the transmission control relay CSC and the recovery contact of the track relay 11TR (which is a contact formed when the coil is de-energized). The ATC signal wave sent from the ATC transmitter 8 is transmitted to the track circuit 11T only when the train 20 is in the track circuit 11T.

Further, a railroad crossing transmitter 9 is connected to the ATC signal transmitting unit 5b via an operating contact of the slow release relay-XSC, and the railroad crossing transmitter 9 is provided only when the train 20 is in a track circuit 11T having a railroad crossing 21. The railroad crossing signal wave sent from is transmitted to the track circuit 11T. A railroad crossing receiver 10 is connected between a railroad crossing 21 of the track circuit 11T and a boundary point 3 on the advancing side via a matching transformer 4d. The crossing signal wave sent from the crossing transmitter 9 is a frequency that avoids the frequency band of the ATC signal wave sent by the ATC transmitter 8 in order to prevent the ATC on-board device from being affected even when a continuing train approaches. Is used.

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

When the train 20 enters the track circuit 10T from the track circuit 9T, the coil of the transmission control relay CSC is excited, and the ATC signal wave transmitted from the ATC transmitter 8 is transmitted to the ATC transmission unit 5b and the matching transformer 4b. Via the track circuit 10T in the forward direction of train progress. When the train 20 reaches the boundary point 2 and enters the track circuit 11T, it is detected by the TD signal, and when the track relay 11TR falls, the ATC signal wave sent from the ATC transmitter 8 is forward from the ATC transmitter 5b. The signal is switched to the ATC transmission unit 5c and transmitted in the forward direction of the track circuit 11T having the railroad crossing 21 via the matching transformer 4c. 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 crossing signal wave sent from the crossing transmitter 9 is transmitted to the track circuit 11T via the ATC transmitting section 5b and the matching transformer 4b. Send from the direction opposite to the train traveling direction.

In this way, when the train 20 enters the track circuit 11T and the ATC transmitter 5b is released from the ATC transmitter 8, a crossing signal wave is transmitted, so that the train 20 and the boundary point 2 are separated from each other. Only one signal wave can flow.

When the train 20 enters the track circuit 11T, the coil of the alarm relay CR is deenergized, the alarm relay CR is restored, and an alarm is issued at the railroad crossing 21. After the train 20 passes the railroad crossing 21 and the railroad crossing receiver 10 detects the railroad crossing signal wave passing through the reception point of the railroad crossing signal wave, the coil of the relay XR is excited and the alarm relay is activated. -The CR is operated to release the alarm issued at the railroad crossing 21. When the train 20 further advances, 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. Proceed to the boundary point on the 12T advance side. Further, when the train 20 has completely entered the track circuit 12T and some time has elapsed after the track relay 11TR is operated, the operation contact of the slow release relay X SC is separated, and the railroad crossing transmitter 9 and the ATC transmitter are released. 5b is cut off to stop the crossing signal wave from flowing to the track circuit 11T. In this case, the alarm relay CR is driven by the operation contact of the track relay 11TR, so 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 case where the ATC transmitter 8 and the railroad crossing transmitter 9 are separately provided has been described. It may be shared with the TC transmitter 8.

[0017]

[Effect of device]

 As described above, when the train enters the closed boundary and the ATC transmitter switches to the front closed boundary point, this invention transmits the railroad crossing to the boundary point of the track circuit that was transmitting the ATC signal before switching. By connecting the railcars and transmitting the signal wave for control of the crossing end point in the opposite direction of the train using the track circuit for closing, it is easy to provide a separate track circuit for the crossing control. With this configuration, it is possible to reliably control the crossing end point.

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

[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, a railroad crossing transmitter, and a railroad crossing receiver are provided, and the ATC transmitter transmits an ATC signal wave only from the front to the approach section of the train, and at the boundary point of each track circuit. The railroad crossing transmitter is connected and transmits the signal wave necessary for control of the crossing end point from the rear side of the train after the train enters the boundary of the railroad track with the railroad crossing. The crossing receiver is connected to the crossing point of the crossing and the crossing receiver receives the signal wave necessary for the crossing end point control. Characteristic level crossing control device.