SU1660102A1 - Pole of electric machine - Google Patents

Description

The invention relates to electrical engineering. The purpose of the invention is to simplify the design, reducing labor intensity and improving weight and size indicators. The pole has a longitudinally laminated core. The end plates of the core, made of annealed steel with a thickness of 2-3 mm, are elongated radially and bent in the tangential direction, forming shelves on which a pole winding coil is mounted, fixed with rods through the holes in the core of the pole. The terminals of the coil are located on one side of it on opposite sides of the core, and the upper insulating frame has a slit. 5 il.

The invention relates to electrical engineering and relates to the additional poles of electric machines.

The purpose of the invention is to simplify the design, reducing labor intensity and improving weight and size parameters.

Figure 1 shows the pole with the coil assembly; in Fig.2 and 3 - the core of the additional pole without coil from different sides; figure 4 shows the coil, top view; figure 5 is the upper frame.

The pole contains laminated core 1, bonded with longitudinal end plates 2, which are elongated in the radial direction. The bent portions of the 3 plates 2 form the flange of the pole tip. The coil 4 with insulating frames 5 and 6 is installed on the shelves 3 and secured by slats 7, passed into the holes 8 of the core 1.

The single-layer coil of the additional pole is made of bare rectangular wire wound on the edge. The beginning of the first turn and the end of the last turn are made on one side of the coil on opposite sides of the core, that is, the number of turns is one and a half (FIG. 3). The winding insulation is made of three gaskets, each 0.1 mm thick, of impregnated glass fabric, followed by crimping and baking the coil. The upper and lower turns of the coil are insulated with glass fiber mite.

The location of the beginning and end of the coil of the additional pole on opposite sides relative to the core allows you to connect the compensation winding of the main poles with the winding of the additional pole on the side opposite to the collector, and the connection to the armature and terminal box on the collector side. This gives

1660102 A1

1660102

the possibility, in combination with the extension of the end plates of the core in the direction of the armature (in the radial direction) with the formation in the tangential direction of the shelves for supporting the coil, to place in the limited space of the interpolar window of the highly used electric machine the necessary number of turns of the winding. However, the uneven number of turns on different sides of the coil makes it necessary to complete the upper frame 6 of the split.

When the location of the coil of the additional pole is as close as possible to the anchor, its scattering flows are significantly reduced.

The pole is made as follows.

The laminated core 1 is pressed between the radially extended end plates 2 and rivets riveted 20 under the press 9. With the subsequent bending at a right angle (in the tangential direction relative to the axis of rotation of the electric machine), elongated end plates 2 can be obtained flanges of the pole 25 3. The core of the additional pole is insulated by known means.

On the shelves of the tip 3 is installed the lower insulating frame 5, coils 4 and

the upper split insulating frame 6. The slats 7 are passed through the holes 8 in the core 1. The pole assembly is placed under the press and the protruding ends of the slats 7 are bent to fit snugly to the coil, fixing it reliably on the core. The pole passes impregnation, heat treatment and in the form of a monolithic node is installed in the stator of an electric machine.

Claims (2)

An electric machine pole containing a laminated core, a coil with terminals, lower and upper insulating frames, resting on a pole na15 finisher and fixed with slats bent to fit the coil through holes in the core, characterized in that simplify the design, reduce labor intensity and improve weight and size parameters; the end longitudinal plates of the core are made elongated in the radial direction and their protruding parts are bent in tanga cially direction, forming the pole piece and the leads are disposed on one side of the coil on opposite sides of the core, wherein the upper insulating frame has a cut. 2- and Fy 1660102 Fig.Z FIG A 1660102