WORKING EQUIPMENT FOR DRAG SHOVEL OR FACE SHOVEL OF HYDRAULIC BUCKET EXCAVATORS

摘要

FIELD: mining and building industries.;SUBSTANCE: working equipment includes bent mono-block boom, arm pivotally connected to boom and having rotary bucket formed on arm end, hydraulic jacks for boom rotation, arm and bucket. Arm includes bracket pivotally secured to boom end and tubular rotary part arranged in bracket by one end thereof. Rotary bucker is assembled on another end of tubular rotary part. Arm has rotary mechanism having drive formed as rack jack for turning tubular arm part through 180^o angle around longitudinal axis thereof. Boom is composed of two parts arranged so that angle between longitudinal axes thereof is 35-45^o. Hydraulic jack for arm rotation in vertical plane may be arranged on top or bottom sections of boom to which arm is connected. Boom has bucket for drag shovel or face shovel connection.;EFFECT: increased performance.;2 cl, 3 dwg