Brake static plate assembly, brake and elevator system

A brake static plate assembly, characterized in that, comprising:

• a first static plate, which has:
• a first outer edge and a second outer edge which are adjacent to each other;
• a first inner edge provided with a first shaft mounting notch thereon;
• and
• a first set of coils disposed on a braking surface of the first static plate;
• a second static plate, which has:
• a third outer edge and a fourth outer edge which are adjacent to each other;
• a second inner edge which is matched with the first inner edge and is provided with a second shaft mounting notch which forms a shaft mounting hole of a drive shaft together with the first shaft mounting notch;
• and
• a second set of coils disposed on the braking surface of the second static plate, and a magnetic flux of the second set of coils is the same as that of the first set of coils;
• wherein the first inner edge forms an acute angle with the first outer edge and/or the second outer edge, and the second inner edge forms an acute angle with the third outer edge and/or the fourth outer edge.