Control peripheral post of railway field devices provided with means to facilitate the extraction of the control modules

1. Control peripheral post of railway field devices, comprising:

at least one row of control modules comprising a plurality of control modules operatively connected or connectable by electric cables to field devices;

a support frame having a front side and housing said row of control modules;

wherein said support frame comprises at least one anti-extraction bar positioned on the front side of the support frame, said bar being adapted to selectively take an extraction configuration, wherein said bar is positioned in such a way as to permit the extraction of the control modules of said row from the front side of the support frame, and

a blocking configuration, wherein said bar is positioned in front of said row of control modules so as to prevent the extraction of the control modules of said row from the front side of the support frame;

the anti-extraction bar being mounted pivotally hinged so as to be able to rotate about a fixed and predetermined axis of rotation;

wherein the support frame comprises blocking elements provided for selectively blocking said anti-extraction bar in the extraction and blocking configurations;

wherein said anti-extraction bar comprises two opposite end portions and wherein said blocking elements are associated to at least one of said two opposite end portions;

wherein said blocking elements comprise a blocking slot and a blocking pin of variable thickness which is slidably mounted to one of said opposite end portions of said anti-extraction bar, the blocking in comprising a portion of pin with a relatively greater cross-section and a portion of pin with a relatively lesser cross-section, the blocking slot comprising a central sliding portion and a pair of end portions widened in relation to the central sliding portion, wherein the central sliding portion is adapted to co-operate with said portion of a lesser cross-section of the blocking in to permit the sliding of said pin during a shift of said anti-extraction bar and wherein said widened end portions are adapted to cooperate with said portion of a greater cross-section of the blocking pin to block the anti-extraction bar in said extraction and blocking configurations.

2. Control peripheral post according to claim 1 , wherein said axis of rotation is a horizontal axis.

3. Control peripheral post according to claim 1 , wherein the support frame comprises at least one row of seats wherein the control modules of said row are accommodated, in said frame there being provided a plurality of vertical delimiting plates for horizontally delimiting the seats of said row, said plurality of vertical delimiting plates comprising a plurality of plates of a first type and a pair of plates of a second type between which there are interposed the plates of the first type, said anti-extraction bar being hinge-mounted by means of a pair of hinge pins which laterally protrude from the bar and which are coupled to respective hinge holes provided on said plates of the second type.

4. Control peripheral post according to any of the previous claims, wherein said anti-extraction bar is a horizontal bar selectively movable between an upper extraction position and a lower blocking position corresponding to said extraction and blocking positions, respectively.

5. Control peripheral post according to claim 1 , wherein the support frame comprises an end stop slot provided on the anti-extraction bar and an end stop element projecting from the blocking pin which crosses the end stop slot, the end stop slot and the end stop element being adapted to cooperate with each other to define two opposite end stop positions of the blocking pin.

6. Control peripheral post according to claim 5 , wherein said projecting end stop element is detachably joined to the blocking pin.

7. Control peripheral post according to claim 1 , comprising a plurality of said rows of control modules in vertical column, the support frame comprising a plurality of said anti-extraction bars which are each associated to a respective row of control modules.

8. Railway interlocking and/or signalling system comprising a central control post and a plurality of control peripheral posts according to claim 1 connected to said central post.