DE660322C - Route transition signaling device - Google Patents

Description

The present invention extends to warning systems that are automatically controlled by the train for unprotected crossings. In systems of this type, it is in the interest of maximum operational safety necessary to meet the following requirements:

1. Greatest simplicity of the circuit,

2. A line fault in the track circuits may switch on the red warning light not prevent

3. The red warning light may only disappear when the last train axle has crossed the path has cleared.

There are previously known circuits that meet all of these requirements with the help of four and meet more relays and a correspondingly high number of contacts. The present Invention specifies a circuit in which the claims with the help of only

ao three normal relays are met, at the same time it is achieved that the system at works safely in the same way as fast or slow moving short or long trains.

It is known per se to control overway signal systems with only three relays. However, certain conditions could not be met here, e.g. B. If there was a fault in one of the circuits, the red warning light was not switched on again on the next train journey. Systems with three relays are known, these being connected to short, insulated rail sections. In contrast, the invention relates to systems in which continuous insulated track sections are used. According to the present invention, such systems are now further perfected in that valve cells are switched on in the lines connecting the relays and the insulated rails. Valve cells that only allow the flow to pass in one direction are known per se. It is also known to use valve cells in AC-powered track systems in order to be able to use direct-current relays after the alternating current has been switched on. In contrast, the present invention is a DC-fed overhead signaling system in which valve cells are used in order to achieve a reduction in the number of relays that are used. The warning signals are controlled in a manner known per se by means of three isolated sections, of which the length of the two outer switch-on sections G ₁ and G ₂ is measured according to the existing driving speed and the desired warning time. The length of the third section G ₃ depends on the width of the path transition.

*) The following is indicated by the patent seeker as the inventor:

Ulrich Jacobsen in Berlin-Siemensstadt.

Claims (2)

The subject matter of the invention is explained in more detail in the figures, for example. Fig. Ι shows the track circuit; Fig. 2 shows the associated relay connected to the tracks subsequent switching of the signal lamps. As can be seen from the drawing, _{relays io and 20 are connected to the insulated track sections G 1} , G ₂ and G ₃ , which switch on the red lamps R or the white lamps W via contacts 15 and 25 (FIG. 2). A relay 30 is also present at the same time. Valve cells 17, 18, 19 and 27 are connected upstream of the relays. The device works as follows: Assume a train comes from the left and drives on track section G ₁ . Relay ι ο is short-circuited, contact 15 (Fig. 2) is switched, the white lamps are switched off, and the red ones receive power. At the same time, contacts 11 and 13 on relay 10 are closed and contacts 12 and 14 are interrupted. When the train arrives at track section G ₃ , the circuit of relay 30 is closed in the following way: -j-pole of battery B ₂ , relay 30, line 28, contact 13, line 29, insulating rail 36, pull axis, rail 37 , Line 38 ,. - Pole of battery B ₂ . As a result, the contacts 31, 32, 33 and 34 of the relay 30 are closed and the insulated rails 36 and 39 are connected in parallel via line 40, contacts 11 and 31 and line 41. This ensures that the relay 10 does not receive any current even after leaving the track section G _{1, so that the red signal remains.} Only when the last axis has left section G ₃ and thus the path transition and the short circuit of the relay 10 has been eliminated, the relay picks up again and switches on the white ones again instead of the red lamps. By pulling in the relay 30, the second circuit to the relay 20 has been closed at the same time via the contact 33, which makes this relay independent of the short circuit through the pull axes with the help of the blocking cell 18. Because even when the route G _{3 is occupied} , the current flows from the battery B _s via the contacts 33 and 22, relay 20, line 42, rail 37, line 38 to the negative pole of the current source B ₂ . . £) he VentÜzelle 18 prevents therefore that the short-circuit circuit via the line 43 can come into being. At the same time, the relay 30 is kept in the attracted state on the path shown by the dashed lines via the drawing axes 3. Since the relay 20 remains energized, the white light remains on the signaling device. If the track section G ₂ is now also left by traction axles, the relay 30 drops out and interrupts the contact 33. However, relay 20 remains energized because it now receives power from the battery B ₃ again on the path clearly shown. This is exactly how the device works in the opposite direction, since it is symmetrical is trained. P. \ X KNTANSPR Ü C IIE: i. Path crossing signal device, in which the control of the warning signals through three isolated track sections, of which the two outer sections correspond in length to the driving speed and the desired warning time, in connection with switch-on and switch-off relays using direct current, which is always fed to the track with the same polarity, takes place, characterized in that between the rails of the outside isolated track sections (G ₁ , G ₂ ) and the switch-on relays (10, 20) and between the switch-off relay (30) and the corresponding track sections valve cells (17, 18 or 19, 27) are switched on. 2. Device according to claim 1, characterized in that the warning signals are switched off only after the crossing is complete by connecting the insulated track section (G ₃ ) located on the crossing in parallel with the insulated track section fGj or G ₂ ) traveled on first in the direction of travel . 1 sheet of drawings