RU1814747C - Rotor of electric machine - Google Patents

Abstract

The use of the invention: in electric machines with permanent magnets on the rotor, Summary of the invention: in the rotor 3 of an electric collector-type machine, prismatic permanent magnets 1 are located in the grooves of the magnetic system and secured by wedges 4 with a gasket 5, For fixing the wedge in the longitudinal direction the gasket is made of ductile non-magnetic material, such as brass, with notches along the longitudinal axis along the edges of the gasket. The notched ends 7 of the gasket on each side of the magnetic system, after being wedged, are bent to the end of the wedge and to opposite sides. Zil, & Yo

Description

Fig. /

The invention relates to the field of electrical engineering and can be used in the rotors of electric machines with permanent magnets on the rotor.

The purpose of the invention is to simplify the design and increase the reliability of fixing the wedge from moving it along the groove of the rotor and, thereby, increasing the reliability of the electric machine as a whole,

SUMMARY OF THE INVENTION Fig. 1 is a sectional view of Fig. 1; Fig. 2 is a view B in Fig. 1 and Fig. 3 is a plan view of a sealing gasket.

Permanent magnets 1 are located in the slots of the magnetic system 2 of the rotor 3 of the electric machine. The magnets are held by the wedges 4, Under the wedge there is a sealing gasket 5. In the manufacture of the gasket, cuts 6, 7 are made, the ends of the gasket 5 bent after the closure; . v V-. -. / :: - ..-. .. -. -l

When assembling the structure after installing the magnets 1 in the grooves 2, they are jammed. For a tight jamming, there are installed wedge-shaped gaskets 5, the number of which is determined locally, one of the gaskets being made longer than the wedge, taking into account the subsequent bending of its notched ends 7. After the wedging, the notched ends of the gasket 5 are bent on each side of the magnetic system to the ends wedge and willow opposite side. Gasket 5 is made of non-magnetic plastic material, for example,

brass. Thus, it does not affect the scattering fluxes in the end zone of the magnetic system and is not destroyed after repeated bends.

. If in the process of jamming the gasket has shifted and one of its ends bent to the wedge will protrude beyond the outer surface of the rotor, this end can be cut to the required size.

As a result, it turns out that the wedge abuts the gasket at both ends, and the gasket, in turn, is fixed relative to the magnetic system, which prevents the longitudinal

movements of both the gasket itself and

wedge .-- ;; .--; .-; /; / -; . ./: In this case, the wedge is secured without the use of additional parts, since the sealing gasket in the groove

Claims (1)

almost always necessary. . The claims The rotor of an electric machine containing prismatic permanent magnets located in the slots of the magnetic system and secured by wedges with a wedge-shaped gasket, on the side and with the fact that, in order to simplify the design and increase Reliability, the gasket is made of plastic non-magnetic material with longitudinal cuts along its edges, while the notched ends of the gasket on each side of the magnetic system are bent to the end of the wedge in opposite directions. --- ,, -, .., -; ..:. - .... / .:. ..v ..., / x / Figz