SLEWING CIRCLE Russian patent published in 2005 - IPC

FIELD: transport engineering; railway vehicles.

SUBSTANCE: invention relates to devices used for shifting vehicle bogies from one track to the other. Proposed slewing circle has platform with section of rail track resting through bearing on base, and platform turning drive including pneumatic motor, reduction gear and control unit. Slewing circle has turnable lever with roller installed in slot of housing secured on base and hinge-coupled with rod of pneumatic cylinder, two pneumatic restrictors controlled by turnable lever and placed in compressed air supply line to pneumatic motor in parallel with check valves, extreme position limiting stops of turnable lever, two spring-loaded locks in turnable lever, one of which arranged coaxially with rod of pneumatic cylinder interacts with flat on its end face, and second one arranged in perpendicular plane interacts with inclined slots arranged in housing. Turnable lever and stops installed in turning platform and corresponding to number of working position are provided with teeth getting into mechanical engagement.

EFFECT: improved operating characteristics, reduced cyclic dynamic loads at rotation of platform, improved reliability of slewing circle in operation.

4 dwg