DEFINITION METHOD OF HEAT FLOW SHARING COEFFICIENT BETWEEN FRICTION PAIRS OF DIFFERENT KINDS OF FRICTIONAL UNITS IN BAND-BLOCK BRAKES OF DRAW WORKS (VERSIONS)

摘要

FIELD: machine building.;SUBSTANCE: according to the first version method of heat flow sharing coefficient definition between friction pairs of band-block brakes of drawworks is in definition of heat flow sharing coefficient definition between friction pairs of friction units. By values of heat transfer characteristics in friction pairs which are in closed or open condition, there are defined heat sharing ratio α_H.S. α'_H.S. between those elements. According to the second version method of heat flow sharing coefficient definition between friction pairs of band-block brakes of drawworks in which friction side plates are located on working surface of brake pulley and are movable is in definition of heat flow sharing coefficient definition between external and internal friction pairs of friction units. By values of heat transfer characteristics in friction pairs - external located in open and closed condition - internal in closed condition, there are defined heat sharing ratio between metallic element of friction.;EFFECT: there is achieved expansion of ability of heat dynamics for regulation of heating flows between elements of friction pairs for object-orientated selection of its materials.;2 cl, 7 dwg