Patent ID: 7518075
Filing Date: 2009-04-14
Classification: H01H,Y10T

Abstract:
1. A force accumulator for a tap changer wherein: a longitudinally movable wind-up slide connected with a drive shaft and an also longitudinally movable jump slide connected to an output shaft are provided, the wind-up slide and jump slide are slidable along guide rods extending in their travel direction, between the windup slide and the jump slide there are force-storing springs, the wind-up slide with each changeover of the load tap changer is moved linearly longitudinally in two alternating and opposite directions by the rotating input shaft so that the force-storing springs are loaded, and shortly before reaching a new end position, the wind-up is slide the up-to-then blocked jump slide is released so that it suddenly follows the movement of the wind-up slide, characterized in that, exactly three parallel guide rods are provided, two rods of which are each surrounded by a respective force-storing spring, the windup slide has three linear bearings each surrounding a respective one of the guide rods, and the jump slide has three linear bearings each surrounding a respective one of the guide rods.