Rotor

Abstract

The device has a rotor spider rotatably mounted about an axle with a number of ribs (12) and a layered rim coaxially enclosing the rotor spider and consisting of individual rim sheets (16) assembled together and joined to the pole spider with wedges (13). The wedges and the rim sheets are designed so as to engage each other in a shape-locking manner to form a rigid joint.

Description

technical field [0001] The invention belongs to the field of motors. Specifically, it relates to a rotor. Background technique [0002] Such a rotor is known, for example, from DE-A1-28 52 980. [0003] On the rotor, as known from DE-A1-28 52 980 or EP-A1-0 334 020 or US Pat. It is connected to a rotor spider (“rotor spider”), which is rotatably mounted about a central axis. Lamination ring wedge connections - depending on the type of manufacture of the rotor spokes - usually consist of a wedge holder, a wedge and one or more corresponding wedges (see for example EP-A1-0 334 020 or US-A-4,143,457) . The rotor spokes in the area of ​​connection to the lamination rings consist of a rigid structure consisting of two or more disks, radial ribs (also arranged obliquely or "Oblique" from the radial direction) and wedge brackets ( See, for example, FIG. 2 of DE-A1-28 52 980). These ribs are welded to the disc and wedge carrier and thus do not work as "slanted" parts in the co...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages of the known laminated ring wedge connections are, on the one hand, the relatively high constructional and manufacturing costs due to the wedge holder, wedge and corresponding wedge

Due to the shrinkage, high mechanical stresses will be induced in the rotor spokes in the stationary state of the rotors, which requires a more robust and expensive structure of the rotor spokes

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