Adjusting device and method for adjusting switching device mechanisms

An adjusting device for adjusting a stroke of a vacuum switching tube and a bias of a contact pressure spring for medium-voltage switches and/or high-voltage switches, the adjusting device being driven by way of a switch shaft, the adjusting device comprising:

• a switching apparatus mechanism having said contact pressure spring, a transmission element and a connection element with a recess formed therein, said contact pressure spring being assigned to the vacuum switching tube, the switch shaft by way of said connection element is connected to said transmission element, and said transmission element is able to be connected to a movable switch contact of a medium-voltage switch and/or a high-voltage switch, said transmission element is rotatable and disposed so as to be laterally displaceable along said recess in said connection element, said contact pressure spring is disposed on said connection element in such a manner that said contact pressure spring acts on a laterally displaceable end of said transmission element, said laterally displaceable end of said transmission element in a switched-off position assumes a first terminal position, and in a switched-on position assumes a second terminal position, said laterally displaceable end by a switching process of said switching apparatus mechanism is able to be transferred from the first terminal position to the second terminal position and/or from the second terminal position to the first terminal position;
• and
• said switching apparatus mechanism further having a readjustable detent acting on said laterally displaceable end of said transmission element in such a manner that a readjustment of said readjustable detent causes a displacement of the first terminal position and thus a variation of a stroke of the vacuum switching tube and of the bias of said contact pressure spring which is assigned to the vacuum switching tube.

A method for simultaneously adjusting a stroke of a vacuum switching tube and a bias of a contact pressure spring of a switching apparatus mechanism for medium-voltage switches and/or high-voltage switches, the contact pressure spring being assigned to the vacuum switching tube, which comprises the steps of:

• driving an adjusting device by way of a switch shaft, the switch shaft by way of a connection element is connected to a transmission element, and the transmission element is able to be connected to a movable switch contact of a medium-voltage switch and/or a high-voltage switch, wherein the transmission element is rotatable and disposed so as to be laterally displaceable along a recess in the connection element, and the contact pressure spring is disposed on the connection element in such a manner that the contact pressure spring acts on a laterally displaceable end of the transmission element, and the laterally displaceable end of the transmission element in a switched-off position assumes a first terminal position, and in a switched-on position assumes a second terminal position, and the laterally displaceable end by a switching process of the switching apparatus mechanism is able to be transferred from the first terminal position to the second terminal position and/or from the second terminal position to the first terminal position;
• and
• adjusting a readjustable detent to act on the laterally displaceable end of the transmission element in such a manner that a readjustment of the readjustable detent causes a displacement of the first terminal position and thus a variation of the stroke of the vacuum switching tube and of the bias of a contact pressure spring which is assigned to the vacuum switching tube.