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. Note here that their leading edges are secured to equaliser and crankshaft crank pin. The main brake shoe features stiffness varying in length, maximum stiffness is at place nearby band attachment to crank pin and minimum stiffness is at band free end nearby equaliser. Extra brake band narrow free end is secured by pliable ear to the main brake band at the end adjoining the crankshaft crank pins. Surfaces of the main and extra brake bands are interconnected by strong but pliable vulcanised-on layer of nanomaterial.
EFFECT: decreased irregularity of distribution of specific loads in friction pairs "friction disc - pulley".
2 cl, 8 dwg
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