FLYING DRUM-TYPE SHEARS Russian patent published in 2006 - IPC B23D25/12 

FIELD: metallurgical engineering, in particular, cutting devices for dividing of movable rolled strip.

SUBSTANCE: flying drum-type shears have bed, upper and lower drums with knives, slanting tooth transmission, unit for picking up clearance in slanted tooth transmission, and mechanism for adjustment of lateral gap between knives. Said mechanism has unit for axial displacement and fixation of driven gear. Drive and driven gears of slanting tooth transmission are fixed on drum necks. Driven gear is positioned for displacement along neck of upper drum. Unit for axial displacement and fixation of driven gear is made in the form of hydraulic cylinder with double-sided stem and is positioned at side of driven gear on end of drum neck, in axially aligned relation thereto. One side of stem is fixed on end of drum neck, and swivel is positioned on other side of stem. Swivel joins stem cavities of hydraulic cylinder with hydraulic system which enables movement and fixation of cylindrical cylinder casing. Said casing is rigidly connected with driven gear and is positioned in axially aligned relationship to upper drum. Hydraulic cylinder is equipped with additional unit for fixation of casing relative to double-sided stem made in the form of "screw-nut" pair. Helical surface of said pair is positioned on portion of double-sided stem of hydraulic cylinder, between its casing and swivel.

EFFECT: simplified construction and enhanced reliability in operation of shears.

3 cl, 2 dwg