HAND LEVER DRIVE OF DISCONNECTING SWITCH Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: hand lever drive of disconnecting switch has frame, handle and fixing arm. Handle is fabricated in the form of plate in which round hole rotation axle is put. Fixing arm is placed on frame. Drive is additionally fitted with supporting and guiding bushings, supporting plate and three grounding bosses. Frame is composed of two parallel angle pieces with supporting plate being positional perpendicular to them. Handle has oval holes arranged in symmetry to rotation axle. Supporting and guiding bushings are fixed immobile on supporting plate. Rotation axle of handle is put into supporting bushing, guiding bushing is installed above supporting bushing opposite to one of oval holes of handle. Fixing arm manufactured in the form of rod with limiters is put into guiding bushing. Fixing arm in its turn is mounted for movement in guiding bushing and oval hole of handle. One of grounding bosses is anchored on frame, other one on handle. Specified bosses are intercoupled with flexible wire. Boss on handle is mounted uniaxially to rotation axle of handle. Third grounding boss is anchored on frame. EFFECT: enhanced operational reliability. 3 cl, 6 dwg