Excitation windings are installed on the main magnetic poles. When the windings are energized, a main magnetic field will be generated between the two main magnetic poles.
The armature core is made of silicon steel sheet with good magnetic permeability, and 18 slots are evenly distributed around the core for embedding armature windings. The diameter of the armature core is slightly smaller than the distance between the main poles.
Extended data:
The armature winding is powered by brushes, the main component of which is graphite, which has good conductivity and lubricity. The brush is fixed in the brush holder and pressed on the commutator by the spring piece.
This model has two main poles, so there are two brush groups, each of which consists of two brushes. The brush group is fixed on the brush handle to form a brush device.
The position relationship between the brush device and the commutator is shown in figure 10. According to the welding position of armature winding wire end and commutator, when the magnetic pole is up and down, two brush groups are distributed on the upper and lower sides of commutator.
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