SU1603484A1 - Magnetic system of d.c.el machine - Google Patents

Abstract

The invention relates to electrical engineering and relates to magnetic systems of electric machines of direct current. The aim of the invention is to reduce the size. The magnetic system of an electric DC machine contains a magnetic core 1 with longitudinal grooves 2. Core 6 of the main pole 4 is made up of two types of steel sheets: with groove 7 and without grooves. When assembling the magnetic system, the coil 10 is attached to the core of the pole 4 by means of Z-shaped brackets 9 inserted into the slots 7 of the core and bent by a shelf on the coil 10 with the support on the box. Due to this, a considerable part of the core is released, the design of the magnetic system is simplified and its dimensions are reduced. 3 il.

Description

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31603484

The invention relates to electrical engineering and is harnessed to magnetic systems of electric machines of direct current.

The aim of the invention is to reduce the size.

Figure 1 shows the magnetic system of an electric DC machine; Fig. 2 shows the main pole of the magnetic system assembled with the field coil; in fig. 3 - the same, top view.

The magnet system of the DC electric machine contains a magnetic core 1 with longitudinal grooves 2 located on either side of the longitudinal axis 3 of the main pole 4. Longitudinal grooves 2 are formed when the magnetic circuit 1 segment is stamped. The main pole 4 is attached to the magnetic conductor with using bolts 5. The core 6 of the main pole 4 is made up of two types of steel sheets: with a groove 7 located above the pole tip 8 and without grooves. When laminating (assembling) the core of the main pole, the sheets alternate in such a way that on the longitudinal side of the core above the pole tip 8 it forms an AC with several notches 7 that fix the Z-shaped brackets 9, which serve to fix the coil 10 on the core 6. A set of pole sheets assembled in the core between the two end plates using rivets, Ser.dedechnik main pole is not isolated.

The field winding coil 10 is wound from a round or rectangular wire 11 and has a body insulation 12. Remote strips 13 are installed on the inner end sides of the coil, forming ventilation ducts 4 between the coil 10 and the core of the pole 4. On the longitudinal sides of the coil are installed box 15 of thin sheet20

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howl steel When assembling the magnetic system, the coil 10 is fastened on the core of the pole 4 by means of Z-shaped brackets 9 inserted into the slots 7 of the core, and the shelf 16 is bent on the coil 10 with the support on the box 15. The density between the coil and the core is made of steel pads 17.

Since the brackets 9 are taken out of the core of the pole and are located in the longitudinal grooves 2 of the magnetic core 1, a significant part of the core is released to accommodate the coil, which is usually occupied by the coil-to-pole fastening elements, which makes it possible to effectively use an interpolar window.

The design of the magnetic system is simplified; the poles are simplified; the packing of the poles in the magnetic system is simplified, which makes it possible to reduce the dimensions of the electric machine and simplify the technology of its manufacture.

Claims (1)

Invention Formula The magnetic system of a DC electric machine, containing a magnetic core with poles fixed on it with a laminated core, on the sides of which grooves are made, and an excitation winding in the form of coils placed on the core and fixed with fastening elements fixed in the slots of the core, - so that, in order to reduce the dimensions, longitudinal grooves are made in the magnetic core above the winding, and the winding fastening elements are made in the form of a Z-shaped bracket placed between the core m pole and winding the one of the shelves situated in said longitudinal slots of the magnetic circuit. FIG. 2