PULLING-THROUGH DEVICE FOR GRIPPING-AND-MACHINING WORKING MEMBER Russian patent published in 1997 - IPC

FIELD: timber industry. SUBSTANCE: pulling-through device has at least two pulling-through members in form of roll or track 1,2 with driving and bringing together mechanisms. The latter is made in form of turnable levers 3 of power drive with bringing together hydraulic cylinders connected with pulling through members. Driving mechanism has hydraulic motors 4 installed on fixed members of processing equipment. Shafts 5 of hydraulic motors 4 are mechanically coupled with pulling through members drive shafts 6. Axes 7 of turning of levers 3 are square to axes of drive shafts 6. Mechanical coupling of shafts of hydraulic motors 4 and drive shafts of pulling-through members 1,2 is made in form of gear trains 8,9, for instance, of two-stage type. Each train 8 or 9 has central gears 10,11 instilled on common shaft 12. Axis of shaft rotation is aligned with axis 7 of turning of levers 3. Gears 13 engage with shafts 5 of hydraulic motors 4. Gears 14 engage with drive shafts of pulling-through members. Gears 15 engage with gears 10 through coupling, for instance, in form of shaft 16. Thanks to coupling of pulling-through members with hydraulic motor through gear trains, hydraulic motor is stationary connected with fixed base members of processing equipment and so its mode of operation does not depend on timber processing mode. EFFECT: improved operating reliability of processing equipment and quality processing of trunk is provided. 2 cl, 1 dwg