FIELD: process engineering.
SUBSTANCE: invention relates to mining and may be used in, for example, production of gravel. Portion of minerals feature the shape of flags that causes notable consumption of electric power for crushing. Jaw crusher has flywheel, fixed and moving jaws. Moving jaw suspension axle is located at crusher lower section at the height making 1/3 of jaw length. Crusher is equipped with eccentric drive, con-rod, V-belt transmission, parts for fastening con-rod to moving jaw and flywheel. Fixed jaw has hemispheric recesses made on its entire width and hemispheric ledges arranged opposite the latter on moving jaw. Ledges feature radius making 0.8 of recess radius and are directed aligned into centers of recesses.
EFFECT: higher efficiency, power saving.
2 dwg
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