SU1334281A1 - D.c.electric machine stator - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is. increased reliability The stator of an electric machine of direct current. Consists of a core 1, to which is attached a core of laminated sheets 4. Elastic elements 5 of the type of cup springs are placed between the extreme sheets. The coil 6 of the pole is fixed on the core with the help of insulating - wedges 7,8. On the surface of one wedge in the direction of the angle of its inclination, protrusions are made that enter the depressions of the other wedge. It. allows you to continuously tighten the coil on the core and adjust its value when assembling the pole, which prevents the coil from moving on the core. 2 Il. Q 5 (L 00 with 4; to 00 ./.

Description

113

The invention relates to electrical engineering, in particular to CTa-phrases of DC electric machines: current.

The purpose of the invention is to increase reliability.

Figure 1 shows the stator with a coil and core in the section; in fig. 2 - section aa of FIG. 1,

The stator of the electric machine of direct current consists of the core 1, to which the bolts 2 are attached to the core 3 of the laminated sheets, between which end sheets are placed elastic elements 5 of the type of cup springs. The coil 6 poles is fixed on the core 3 with the help of uniaxial wedges 7 and 8, which can be made of fiberglass. On the surface of the wedge 7 in the direction of its angle of inclination there are protrusions that enter the depressions on the wedge 8, Wedge 8 is pressed against the extreme sheet of the core 3 by screw 9 passing through the wedge and the extreme sheet of the core and fixed in the sheets of the core preceding the extreme one.

When assembling the electric machine, elastic elements 5 are inserted into the core 3, which are compressed by screws 9 to such an extent that the gap between the core sheet and the preceding one is equal to (F, which is subsequently fully selected when pressing wedge 7 between coil 6 and wedge 8, the position of the wedge on 7 is fixed by protrusions on its surface, which are included in the corresponding depressions on the surface of the wedge 8 (locking connection)

The dimensions of the wedges 7 and 8, the characteristic of the elastic elements 5 are chosen depending on the power of the electric c42812

machine, the magnitude of the vibration acceleration of the stator and the drying out of the insulation of the coil.

g During the operation of the electric machine, the loosening of the coil 6 on the core 3 poles is eliminated by pressing the wedges 7 and 8 to the coil by the elastic elements 5 of the core, the preliminary compression of which is created during assembly.

Due to the introduction of elastic elements 5 in the core 3, a constant preload of the coil 6 on the ser15 of the wedge 7 and 8 is carried out, and the presence of protrusions and depressions on the touching surfaces of the wedges allows to adjust the amount of preload during pole assembly and fix its values, which prevents the coil from moving on the core, prevents its isolation from chafing and, as a result, increases the reliability of the DC electric machine.

Claims (1)

Invention Formula Stator of an electric machine of current of the current, containing poles with. laminated cores, on each of which, through an insulating gasket, a coil is installed, which is loaded. The fact that, in order to improve reliability 35, the gaskets are made in the form of oppositely directed wedges, the protrusions and depressions facing one surface of the other, by which 40 wedges are joined together, and elastic elements are placed in the transverse direction between the outermost sheets of the core the form of disc springs. / 1-xl