BAND-SHOE BRAKE OF DRAW WORKS WITH GANG FRICTION ASSEMBLIES Russian patent published in 2014 - IPC F16D49/08 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to draw works band-shape brakes. Proposed brake comprises brake pulley on the shaft and extra brake band with friction discs and the main brake band arranged there under and brake control drive. Extra brake band is secured by friction fasteners with friction surfaces to the main brake band while their leading edges are secured to rocking beam and to crankshaft crank pins. At braking by expansion of brake bands and contact interaction between their surfaces at sliding angles on the side of leading edges of the main and extra brake bands that bring about friction contact forces to cause difference in band tensions, to decrease irregularity of distribution of specific loads in friction pairs "friction disc - pulley". Extra rest friction force originates owing to the main brake band rounding of idle surfaces of brake shoes.

EFFECT: decreased irregularity of distribution of specific loads in friction pairs "friction disc - pulley".

7 dwg