The screwing or machine is then of bolts or pulls - bottom for attachments screwed of channels railways

摘要

Machine comprising four heads (18) intended to actuate simultaneously the four bolts or the four pulls - bottom intended to ensure the fixing of a rail on a tie (3). this machine comprises a chassis (8) equipped with rollers (9) bearing on the two rails (4) of the railway track, and comprising a self - motor ensuring its sequential displacement of a value corresponding to the nominal spacing between the cross members (3), without slipping or sliding, and two groups (17) of the two heads of screws (18) mounted so as to move vertically at one end of the chassis (8), the spacing between the two heads (18) of a group which can be adjusted, and each group (17) being mounted with the possibility of longitudinal displacement on the chassis, and each screw head (18) comprising a key (34) mounted so as to tilt relative to the axis of the head (18), in order to enable its engagement on a bolt (7) in the absence of a perfect alignment between the key and the bolt.