Switch drive for opening and closing switching contact of high voltage power switch, has tensioning motor coupled with displacement element and displacing displacement element from one end position into another end position

摘要

#CMT# #/CMT# The drive (1) has a fixing unit (9) releasably blocking a rotation of a torso link (5) in an intermediate position of a displacement element (6), where the intermediate position is located between two end positions of the displacement element. A spring force storage unit (7) is coupled to the displacement element and stores driving power in one of the end positions for displacing the displacement element into the other end position. A tensioning motor (8) is coupled with the displacement element and displaces the displacement element from the latter end position into the former end position. #CMT# : #/CMT# The spring force storage unit is designed as a helical spring. The torso link is designed in form of a circular cylinder or a hollow body. The displacement element is designed as a spring plate and a ring. #CMT#USE : #/CMT# Switch drive for opening and closing a switching contact of a power switch i.e. high voltage power switch. #CMT#ADVANTAGE : #/CMT# The tensioning motor is coupled with the displacement element and displaces the displacement element from one end position into another end position such that a back displacement of the displacement element can be achieved, thus avoiding an undesired closing of the switching contact when pushing the displacement element back. The fixing unit releasably blocks the rotation of the torso link in the intermediate position of the displacement element such that a coupling of the displacement element with the torso link can be adjusted in a simple manner by an alteration of a guide track. The spring force storage unit is designed as the helical spring such that the spring force storage unit can be manufactured in a simple, inexpensive and space-saving manner. The switch drive is designed with a reduced number of components such that a necessary installation space of the switch drive can be reduced. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a side view of a switch drive for opening and closing a switching contact of a power switch. 1 : Switch drive 5 : Torso link 6 : Displacement element 7 : Spring force storage unit 8 : Tensioning motor 9 : Fixing unit.