| 摘要 |
The invention relates to a drive device for isolating contacts of switchgear systems, especially for air-insulated medium voltage switchgear systems, comprising mobile pole units which are arranged on a pole box frame. In a first sequence of motions of the pole units, the isolating contacts are separated from fixed counter-contacts of the switchgear system, and in a second sequence of motions, the pole units can be linearly displaced in order to obtain the isolating distance. Both sequences of motions are carried out by means of a slider crank drive shaft, in conjunction with an expandable articulated lever. The function of the articulated lever is carried out by means of a control shaft lever (SH) which is rotatably mounted on one side, in conjunction with a pole box drive lever (PH) which is rotatably mounted on both sides. Said control shaft lever (SH) comprises a guiding groove (FN) which extends in its length. The end of the pole box drive lever (PH) opposing the pole box frame is guided in said groove, together with a free end of an additional extension lever (ZH), and the end of the additional extension lever (ZH) which is located opposite the free end is rotatably mounted in a fixed centre of rotation (DP) of the switchgear system. Drive devices for isolating contacts are used for switchgear systems for energy supply and distribution. |
