DISPOSITIVO DE PROTECCAO CONTRA COLISAO PARA VEICULOS DE TRANSPORTE URBANO

The present invention relates to a collision protecting device for municipal railway stock comprising a buffer rod (1) arranged on two shock absorbers (2) beneath a front structure (5). The buffer rod (1) overlaps the front structure (5) by the length (Y), whereby the length (Y) is equal to the sum of the shock absorber (2) stroke and length of a breakaway path (Q) beyond which a breakaway joint (3) is arranged (3) and in front of which there is a deformation path (X) of the front structure (5). The shock absorbers (2) are mounted in a guide (4) and the length (W) of the shock absorber (2) solid portion and the length (T) of a free space in the guide (4) must be at least equal to the sum of the deformation path (X) of the front structure (5) desired deformation path and the breakaway path (Q).