| 摘要 |
FIELD: agricultural engineering, in particular, handling technique. ^ SUBSTANCE: boom-type crane has movable part of column equipped with mechanism for rotation around vertical axis and positioned within immovable part of column. Immovable part of column is positioned so as to be dismantled by means of brackets mounted on upper and lower pins of hydraulic suspension system of vehicle. On movable part of column there are boom and crank with telescopic bar, said boom and bar being successively positioned and mutually connected with each other through pivot joint. Load-handling device is fixed at free end of telescopic bar. Boom-type crane is equipped with outriggers. Boom-type crane is further equipped with drive for mechanism for rotating of movable part of column, boom lifting drive, crank rotating drive, telescopic boom extending drive made in the form of power cylinders. Drive for moving outriggers in vertical plane is made in the form of pair of levers. Levers are mounted with their one ends on ends of hydraulic suspension system of vehicle, said system having drive for angular movement of upper pin. Other ends of levers are connected through pivotally joined double-armed beams to supports. ^ EFFECT: increased handling capacity and wider handling zone. ^ 3 dwg |
