TRACK MACHINE ERECTING STAGE LIFTING MECHANISM Russian patent published in 2004 - IPC

FIELD: railway transport. SUBSTANCE: invention relates to lifting devices, namely to mechanisms used for lifting erecting stage designed for servicing contact system of electrified railways and transmission lines. Proposed mechanism contains at least one support hinge-connected with base chassis and erecting stage, at least one support lifting and lowering hydraulic cylinder, erecting stage lifting and lowering hydraulic cylinder and mechanism for stabilizing horizontal position of stage. Stabilization mechanism has housing with hinge-mounted plumb engaging with at least four switches controlling hydraulic cylinders. Said plumb engages with switches through lever rigidly connected with disk provided with cams and installed on housing of hydraulic cylinder control mechanism for turning around its axis. Time delay relays are installed in hydraulic cylinder control circuits. EFFECT: improved stability in operation. 4 dwg