DE973300C - Flashing lights at Weguebergaengen - Google Patents

Description

Flashing light system at crossings In the case of flashing light systems at crossings, in those by driving on a switching point on the track some distance in front of the Red flashing light for warning the road traffic is switched on across the way, an insulated rail is often provided on the crossing, and when it is driven on, the red isolated switched off and at the same time another switching point on the track behind the crossing, the so-called counter switch-on point for train journeys in the opposite direction Direction to be made ineffective or blocked.

In such insulated rails, which several, usually four Line connections for connection to the power source and to a track relay may have due to the constant movements of the rails relative to the sleepers and a break in a connected cable can occur for the bedding insulated rail itself, which lies in its entire length in the current path, broke go, whereby an interruption of the circuit of the track relay and thus a Dropping out of the track relay working as a closed-circuit relay causes, or if the Interruption when driving on the rail, i.e. when the track relay has dropped out, this relay is prevented from being pulled back in. This leads to incorrect switching, which usually automatically trigger an error or malfunction message, so one To have the personnel checked and rectified.

In the meantime, however, a switching state remains, the means a risk to traffic. To this possibility with an arrangement To prevent the type specified above, the invention provides that that in the event of malfunctions on the insulated rail, such as cable or rail Break, after Leaving the same persistent flashing light when driving over the counter switch-on point is automatically canceled. This can preferably be effected in that the switch-off relay activated when driving on the insulated rail in the case of Fault prevents or removes the blocking of the counter switch-on point.

If this blocking takes place, for example, by a blocking relay, which with a contact the connection of the mating switch-on point with the assigned switch-on relay interrupts, the arrangement is made according to the invention so that the lock causing contact of the blocking relay bridged by a contact of the switch-off relay is and remains bridged in the event of a fault and that then via the bridging contact responding switch-on relay by means of a briefly responding auxiliary relay causes the red flashing light to switch off.

In this way, the system will still go through despite the malfunction the train causing the disruption itself before leaving the warning route put into a state that is outwardly similar to the basic position, in that the flashing light is canceled again, which would otherwise initially drive unnecessarily long road traffic stop and ultimately fall into disregard with its dangerous consequences would. Independently of this, the fault can then be displayed automatically, and at the latest when driving through one of the switch-on points again through the next Train, preferably by the absence of the monitoring signal for the train crew.

The invention is illustrated in the drawing using an exemplary embodiment, only those components of a flashing light system for crossings are shown which are essential to the invention.

Switching on the flashing light signals B i and B: 2 on the crossing and the monitoring signals S i and S2 on the track are used by switching points 0, 1, 1 and M2 in connection with a switch-on relay i and a signal relay 3, while the switch-off is an isolated rail M3 in connection with a track relay 2o and a switch-off relay 6 is used. Furthermore, a blocking relay q. and an auxiliary relay 21 is provided. The mode of action is as follows: When driving on. the switching point 117 i pulls the switch-on relay i and switches on the signal control relay 3 with its contact 12, which creates a hold circuit via its own contact 31 and switches on the signals B i and B2 as well as S i and S2 with another contact 32, while the contact 33 prepares the circuit of the switch-off relay 6.

When driving on the insulated rails 3f 3, the track relay 2o drops from, which brings the switch-off relay 6 to attract with its contact toi, which with the contact 63 closes another hold circuit for the relay 3 and with contact 64. the locking relay q. turns on. The contact 4.2 of the latter interrupts the original hold circuit of relay 3, while contact 41 has its own hold circuit closes. Contact 4.3 interrupts the connection from switching point 111 i to your switch-on relay i.

If the system is faultless, the relay 6 drops out again when the train the insulated rail 1113 leaves, so that by switching over the contact 63 the Relay 3 is thrown off and thus the flashing signals are switched off and also by opening contact 65, the interruption at contact 43 becomes effective in such a way that that prevents the relay i from responding when the counter switch-on point 312 is driven over will.

If, however, a cable or rail break has occurred on the insulated rail 1113 when it is driven on, the relay: 2 cannot respond again and the relay 6 cannot drop out. As a result, relay 3 remains energized and the flashing light is switched on. For this purpose, the block on contact .13 is canceled by contact 65, so that when the rail contact 1172 is driven over, relay i responds and via contact 13 the auxiliary relay 21 briefly pulls in. The contact 2i I of the latter then interrupts the circuit of the relay 6, so that now the contact 63 switches off the relay 3, which switches off the flashing light and the relay 6 at contact 33 is interrupted so that it does not respond again when the relay 2i drops out can. In addition, the circuit of the monitoring signals S i and S2 is kept permanently interrupted by the contact 2o2 of the relay 2 which has dropped out, so that these signals cannot light up during the next train journey and thus indicate the fault to the train crew.

Claims (6)

PATENT CLAIMS: i. Flashing light system at crossings where by means of a switch-on point before the crossing, the red flashing light is switched on and by means of an insulated rail at the path crossing, the flashing light is switched off and a switch-on point after the crossing point (counter-switch-on point) is rendered ineffective or is blocked, characterized in that in the event of faults on the isolated Rail (1113) (cable or rail break) persists after leaving the same The flashing light is canceled when the opposing switch-on point (A72 or 1I i) is driven over. 2. System according to claim i, characterized gekeniizeichnet that when driving on the isolated Rail actuated switch-off relay (6) in the event of a fault, the blocking of the counter-switch point prevents or cancels. 3. Plant according to claim i and 2, characterized in that that the blocking effecting contact (q.3) of a blocking relay (q.) by a Contact (65) of the switch-off relay (6) is bridged and bridged in the event of a fault remain. . 4. Plant according to claim i to 3, characterized in that the over the Bridging contact (65) responding switch-on relay (i) by means of A briefly responding auxiliary relay (21) switches off the red light causes. 5. Plant according to claim .4, characterized in that a contact (211) des-auxiliary relay (21) the switch-off relay (6) and a contact (63) of the latter interrupts the hold circuit of the signal relay (3). 6. Plant according to claim i, characterized in that the disturbance at the latest when driving again a the switch-on points by the next train, preferably by the absence of the monitoring signal (Si, S2) is displayed by e.g. B. a break contact (2o2) of the track relay (2) is in the circuit of this signal.