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Timo Holopainen

Jian Zhou

Yiqun Bruce Wang

Juha Hellsten

Yiqun Wang

Janne Roivainen

Tia Tuhkanen

Zhaohui Fei

Ingmar Waltzer

A rotation apparatus comprises a machine base and a stator. The machine base comprises a driving end intermediate support board and a non-driving end intermediate support board disposed parallel along the length direction of the machine base. Inner holes used for supporting the stator are separately provided in the driving end intermediate support board and the non-driving end intermediate support board. The inner holes in the driving end intermediate support board are asymmetrical on the top and the bottom. The vibration of the rotation apparatus can be effectively reduced, the output power is improved, and a good cooling effect is provided.

Rotation apparatus having machine base with differently shaped support boards

In an arrangement in an electrical machine, the electrical machine includes a rotor rotating around its shaft, a stator located from the rotor at an air gap, and a frame around the outer surface of the stator. A stator opening is formed in the end of the frame, and the stator opening is closeable with a cast end shield. The end shield includes at least three brackets protruding from the outer edge of the end shield. The brackets are fittable onto the end junctions where axially continuing structures are connected to the end at the junctions.

End shield for an electrical machine having coplanar brackets and bearing opening

A cast end shield for an electrical machine, said end shield supporting a bearing that supports the rotor, and said end shield having an opening in the middle. In the radial direction from the centre of the shield, there is an inner rim limited by the opening, an intermediate rim connected to the inner rim and an outer rim connected to the intermediate rim. The intermediate rim has at least one substantially waved reinforcement structure, and within the reinforcement structure, the valleys of the waves are substantially in the radial direction.

End shield

The invention comprises an electrical machine with a stator () formed of plates, said stator () having an outer surface () and a first and second end () in the axial direction () and said stator being supported on the frame () of the electrical machine. The stator () is supported by necks of material (-) on the outer surface () at both ends of the stator. The number of necks (-) at both ends of the stator is even. The stator () has a vertical symmetry axis () perpendicular to the axial direction () and a horizontal symmetry axis () perpendicular to the axial direction (), and the necks (---) are located symmetrically in relation to at least one of the symmetry axes ().

Support in a stator

Growing community of inventors

Espoo, Finland

Timo Holopainen