MACHINE FOR DRIVING LOOSE SPIKES INTO WOODEN SLEEPERS Russian patent published in 1997 - IPC

FIELD: railway track repair machinery. SUBSTANCE: machine has base chassis and working members made up of longitudinal beams positioned above rails with their one ends pivotally fastened on frame of base chassis, and with their other ends connected with frame of base chassis by means of power cylinders, and wheels for interaction with spikes. These wheels are fastened on longitudinal beams. Machine is also provided with mechanisms for fixing working members in transport position. Each of these mechanisms has bracket with vertical posts fastened in lower part of base chassis frame in zone of second end of longitudinal beam, horizontal axle installed in vertical posts, gear wheel rigidly mounted on axle, supporting cam which is axle-mounted. Made in bracket are guide holes. Fastened on bracket are spring-loaded detent and control unit of corresponding hydraulic power cylinder. Each fixing mechanism has same power-driven toothed rack interacting with gear wheel and installed vertically for possible movement in guide holes of bracket. Also provided is supporting member rigidly fastened on second end of corresponding longitudinal beam for possible interaction with supporting cam. Each toothed rack has slot for spring-loaded detent of bracket, and stop for interaction with supporting member and with aforesaid control unit. EFFECT: high efficiency. 1 cl, 8 dwg