STABILISATION METHOD OF OPERATING PARAMETERS OF BAND-SHOE BRAKES OF DRILLING WINCHES WITH FIXED STRAPS ON BRAKE BAND Russian patent published in 2013 - IPC F16D49/08 

FIELD: machine building.

SUBSTANCE: depending on geometrical parameters of straps and angle of contact of a brake band of a pulley working surface in friction assemblies there determined are ratios of coefficients of mutual overlapping, which is equal to ratio of specific loads occurring on straps of branches. Then, as per values of ratio of specific loads there determined is how many straps there shall be on an incident branch of the band in comparison to a diminishing branch.

EFFECT: stabilisation of operating parameters of friction assemblies of band-shoe brakes of drilling winches by redistributing specific loads on branches of a brake band due to different layout schemes of straps on it, variation of their angle of contact of a brake pulley and selection for each strap of friction material with various friction properties.

4 cl, 10 dwg