SU1663698A1 - Armature of electric machine - Google Patents

Abstract

The invention relates to electrical engineering. The goal is to simplify the design and increase reliability. The anchor of the electric machine contains a core 3 with a winding 4. The core is compressed from the ends of the pressure plates. Between the pressure plates and the ends of the core facing towards them are placed elastic elements 7 installed in cavities formed by depressions on the ends of the pressure plates. The recesses are made coaxially with the radially directed corrugations of 8 sheets of the core 3. Corrugations of the adjacent sheets enter into each other. The corrugations are located along the axis of the teeth of the core, and the direction of the corrugations from one end of the core to the other alternates around the circumference. Due to this, the thickness variation of the core core sheets in height is prevented, tangential displacement of the core sheets relative to the pressure plates and the dissolution of the teeth of the outermost sheets of the core are prevented. 2 hp f-ly, 5 ill.

Description

The invention relates to electrical engineering and can be used in electric machines.

The purpose of the invention is to simplify the design and increase reliability.

Figure 1 shows measles, a longitudinal section; figure 2 - measles, offset by an angle and relative to the incision in figure 1; on fig.Z - section aa in figure 1 ;. figure 4 - section bb in figure 1; figure 5 is a section bb In figure 1.

The anchor of the electric machine contains pressed onto the shaft 1 of the collector 2, the toothed core 3 of the leaves of electrical steel with a winding 4 in its grooves. The core 3 is compressed on both sides of the pressure plates 5 and 6. Elastic elements are placed between the pressure plates 5 vi 6 and the ends of the core 3 facing them.

7in the cavity formed by depressions at the ends of the pressure plates made coaxially with radially directed corrugations

8 sheets of core. The corrugations 8 of the adjacent sheets of the core 3 enter each other, and along the ends of the pressure plates the cavities of the ends of the plates are formed and form cavities with them filled with elastic elements 7, the corrugations 8 sheets of the core 3 are located along the axis of its teeth, and the direction of the corrugations from one the end of the core to the other alternates around the circumference. The winding 4 core is fastened in the grooves of the core with wedges 9, on the pressure plates with bandages 10.

The assembly of the core is carried out as follows.

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A pressure plate 6 is pressed onto the shaft 1 box, into the recesses of which a resilient material 7 is inserted, for example, heat resistant rubbers - butadiene-nitrile SKN or siloxene SKT, which can withstand temperatures up to + 250 ° C. When pressing on the shaft 1 of the core 3, the elastic material 7 is crimped by the corrugations of its sheets, and on the opposite side the corrugations enter the recesses at the end of the pressure plate 5. Due to the deformation of the elastic elements 7, the stress levels along the edges of the pressure plates 5 and 6 are achieved. shaft 1 under the plates arising when the thickness of the sheets of the core in height. The presence at the ends of the sheets of the core 3 of the corrugations, which enter the corresponding recesses of the pressure plates 5 and 6 facing them, makes it possible to prevent tangential displacements of the core with the winding 4 fixed in its grooves 4, fixed with wedges 9, relative to the pressure plates and that part of the core winding, which is fixed on said plates with bandages 10. Thus, the core winding is protected from damage at the points of its exit from the core grooves.

The placement of the elastic elements 7 in the radial cavities formed by the recesses of the ends of the pressure plates 5 and 6 and the corrugations of the sheets 8 of the core 3 aligned with them, made along the axis of its teeth and alternating along the circumference with the corrugations entering the recesses of the ends of the plates 5, 6 eliminates the heterogeneity of the core sheets in height, reducing the uneven distribution of voltage in the core shaft and edges of the pressure plates, prevents tangential displacement of the core relative to the pressure plates and dissolving the teeth of the outermost sheets chnika.

The invention allows to simplify the design and increase the reliability of the electric machine.

Claims (3)

1. An anchor of an electric machine containing a core with teeth mounted on a shaft laminated from electrical steel sheets, squeezed from the ends by pressure plates, and elastic elements, which, in order to simplify the design and increase reliability, are radially formed in the core sheets directional corrugations, and corrugations of adjacent sheets enter into each other, and at the ends of the pressure plates of coaxial corrugations of the sheets are made similar in form to the recesses, while on one side the corrugations of the sheets enter into the recesses at the end lites, and on the other side of the armature form a cavity, and wherein said elastic members are mounted in these cavities. 2. Anchor according to claim 1, characterized in that the corrugations of the sheets of the core are located along the axis of its teeth. 3. Anchor on PP. 1 and 2, which differs from the fact that the direction of the corrugations from one end of the core to the other alternates around the circumference. 2 5 fO - DN to 4- J9  // // -one figure 1 L about from w sp about so СЬ figv-In 5