| 摘要 |
At least one slit (4) is provided at the end of the conductor rods (3) to compensate the relative movements resulting from centrifugal and thermal loads. A fixing element (5), ensuring bridging of the electrical current, also serves for mechanical joining. The short circuiting disc (2) is pref. hard-soldered or welded to the conductor rod. The slits can extend in parallel to each other and the slit planes can be in parallel, wound or inclined w.r.t. the axis of the conductive rod. The fixing element can be a screw, pref. conical with a cone angle of 12.5 deg., and having a balancing function. Alternatively, the fixing element is a spring element. USE/ADVANTAGE - Async. motor of high r.p.m., i.e. in 50,000 r.p.m. range at power of approximately 5 MW as used for frequency conversion and magnetic bearings. Reliably prevents mechanical stress arising in conductor rod, short circuiting disc and motor laminated core under centrifugal and thermal loading.
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