HIGH-VOLTAGE SWITCHING DEVICE SPRING DRIVE Russian patent published in 2008 - IPC H01H33/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, in particular, to high-voltage device structural components, namely, to the spring drives designed to control high-voltage switchers. The high-voltage switching device spring drive incorporates a drive mechanism with a spring, a spring winding mechanism and control unit, a crankshaft articulated, on the one side, with the said spring winding mechanism and, on the other side, with the cut-in shaft. The said crankshaft is made up of, at least, three links, that is, two extreme links and a central one circumscribing a circle with the crankshaft revolving, the circumference diameter exceeding that of the said two extreme links. The drive spring is linked, on the one side, with the crankshaft central link, and, on the other side, with the drive casing fixed elements. The spring winding mechanism comprises a geared motor with a shaft, a clutch made up of a housing and a head, a drum and a retainer. The geared motor shaft and the crankshaft first extreme link are aligned. The clutch fixed housing is rigidly coupled with the drive casing fixed elements. The clutch head is rigidly linked, on the one side, with the geared motor shaft and, on the other shaft, with the aforesaid drum. The crankshaft first extreme link with furnished with the retainer arranged so that its outer cylindrical surface faces the drum inner cylindrical surface. A spring-loaded catch is arranged on the drum first shaft to revolve about it and to allow the catch gripping end moving along the retainer outer cylindrical surface. The roller is arranged to move along the clutch housing inner cylindrical surface edges whereon a ledge is furnished. The control unit is designed to lock, in turns, the crankshaft or the cut-in shaft. The catch can be arranged in the drum slot. A ratchet wheel is rigidly fastened onto the crankshaft first extreme link.

EFFECT: higher life and reliability of high-voltage spring drive.

4 cl, 8 dwg