| 摘要 |
FIELD: mechanics. ^ SUBSTANCE: proposed hoisting table comprises the base, cargo platform, ball-and-lever mechanism arranged there between and telescoping drive. One ends of crossing levers of aforesaid mechanism are mounted in guides fixed on the base and platform, the other ends being hinged to aforesaid platform and base. Telescoping drive of aforesaid mechanism comprises the main and auxiliary actuating cylinders. In compliance with the first version, previously mentioned telescoping drive incorporates a beam. One end of previously mentioned beam is fitted on common axle of crossing levers. Its other end is pivoted to the actuating cylinders bases with the help of additional axle. Actuating cylinder rods are coupled with crossing lever ends mounted into the platform and base guides. In compliance with the second version, aforesaid telescoping drive incorporates a double-arm rocker arranged to swing on common axle of crossing levers. Bases of actuating cylinders seat on axles fitted into the ends of aforesaid double-arm rocker, while their rods are pivoted to upper ends of crossing levers. ^ EFFECT: higher load-lifting capacity. ^ 2 cl, 2 dwg |
