SU302788A1 - AC electric machine stator - Google Patents

Description

The invention relates to electric machines, especially asynchronous motors with a capacity of over 100 KW.

Known asynchronous electric motors with detachable beds, consisting of the lower half-rifle box and the upper casing.

However, the technology of their manufacture is difficult.

The aim of the invention is to simplify the production technology and facilitate disassembly during repair.

This is achieved by installing the stator core through iron pressure washers and bearing shields in the half-liner on the circular surfaces of the internal ribs and end walls with a uniform fit diameter, and the terminal box directly on the stator core.

FIG. 1 shows the proposed stator, section; pas figs. 2 - the same, end view; in fig. 3 - technological sketch of the machining of two boxes-stanin simultaneously; in fig. 4 - stator core with push washers and an output box mounted on it.

the surfaces in the two inner edges 2 and 3 and the end walls 4 and 5. The base surfaces 6 are machined according to a single fitting diameter. The processing of the seating surfaces is carried out simultaneously in two shackled bed-boxes (see Fig. 3). Shields 7 and 8 are fastened in the end walls, and a stator core 9 is attached to the inner ribs, attached to a frame with wide strips 10 and 11 embedded in the core (see Fig. 4). The core package is stitched and pressed on the mandrel regardless of the bed. Along the package, in addition to the wide strips 10 and 11, four more narrow strips 12-15 are provided. All strips are fixed in the slots of the core along its outer diameter and are welded to it with push-in washers 16 and 17.

When assembling the stator, the washers 16 and 17 are machined over a diameter D in the frame in the frame on the basis of the internal diameter of the bag. After that, laying and impregnation of the winding 18 of the core is carried out and mounted on the strip 10

terminal box 19. Thus, the stator core 9 constitutes a one-piece assembly with a terminal box. After installing and fastening the core 9 of the rotor 20 and shields 7 and 8, the bed-box 1 is covered with light

Subject invention

Claims (2)

1. The stator of an electric machine of alternating current, containing box-like half-shells, provided with ribs carrying the core and structural shields, is so that, in order to simplify the production, these ribs are made with coaxial cylindrical surfaces of the same diameter, with the core being installed on the inner ribs through the pushpipes, and on the side edges - the inner shields. 2. The stator according to claim 1, characterized in that, in order to facilitate disassembly of the electric motor during repair, a terminal box is installed directly on the stator core. 21 2014 nineteen sixteen nineteen ten 12