Electric-hydraulic railway switch device for moving railroad switch points

A railroad switch device for moving railroad switch points, the device comprising:

• a trailable switching unit, enabling a train to run through the trailable switching unit, wherein the trailable switching unit may be controlled through at least one of a local PLC and a remote PLC;
• a throw unit to automatically adjust plurality of rail and throw distances;
• a hydraulic unit comprising:
• a hydraulic manifold that controls a cylinder direction of movement, and also that allows for manual operation;
• plurality of hydraulic cylinders to provide constant forward movement and reverse movement;
• and
• a hydraulic circuit unit to increase an operation period;
• a center stroke unit to block the hydraulic cylinder movement at middle stroke during installation and maintenance;
• a mechanical target to automatically indicate the position of a point rod, wherein the hydraulic unit is directly connected to the point rod without intermediate components;
• a plurality of spring units to produce a continuous thrust force for holding the railroad switch points closed in forward position and reverse position, wherein the plurality of spring units are installed at a target shaft to control the target rotation to 90 degrees through a bolt configured with a rotation limit ring;
• a plurality of proximity sensors to detect the point rod position and further adjust the point rod;
• and
• a power unit to supply the hydraulic power to the hydraulic unit for moving the hydraulic cylinder.