HAND TRUCK Russian patent published in 2006 - IPC B62B1/12 

FIELD: mechanical engineering; load carriers.

SUBSTANCE: proposed truck has support frame connected with load-carrying platform including stop members from below mounted longitudinally along sides and made -shaped in form of articulated multilink mechanisms mating in cross plane by apices by means of axle and hinge-secured on axles of load-carrying platform and support frame for turning in longitudinal vertical plane and displacement in horizontal. Running wheels on axle are mounted on spices of articulated multilink mechanisms and they form, together with articulated links of -shaped stop members, a rigid frame in cross vertical plane for turning and locking the frame by locking mechanism in intermediate positions in longitudinal vertical plane. Support frame is hinge-coupled with load-carrying platform. Load-carrying platform is provided with stop frame rigidly secured in cross vertical plane on load-carrying platform from side of support frame. Guides mounted on load-carrying platform longitudinally along sides in horizontal plane along direction of movement carry sliders installed for axial travel along guides under action of vertical tie-rods hinge-secured by some ends on sliders and by other ends, on posts of support frame. Running wheels on axle are hinge-coupled in longitudinal vertical plane with some ends of lower tie-rods, other ends of lower tie-rods being hinge-secured on said sliders. Locking mechanism is made in form of pair of levers hinge-secured by some ends on posts of support frame for locking in intermediate positions by screw clamps, and by other ends, on sliders mounted on axle of stop frame in horizontal plane for axial displacement relative to axle and turning in plane square to axle with subsequent locking in intermediate positions by screw clamps.

EFFECT: improved convenience in operation, enlarged operating capabilities.

7 dwg