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

FIELD: mechanical engineering; load carriers.

SUBSTANCE: proposed truck has support frame rigidly coupled with load-carrying platform including stop member from below, running wheels on axle, mechanism for movement of running wheels on axle forming, together with parts of stop member, a rigid frame in cross vertical plane for displacement and locking of frame in intermediate positions by locking mechanism. Mechanism for movement of running wheels on axle is made in form of guide rods rigidly secured on axle of running wheels longitudinally at sides in horizontal plane for axial displacement and interaction through free ends with guide sleeves rigidly secured on stop member in longitudinal horizontal plane and supported on load-carrying platform from below by holding brackets. Rigid frame is mounted between axle of running wheels and free ends of guide rods by means of cross axle on guide rods. Locking mechanism is mounted at sides in longitudinal vertical plane and it includes brackets rigidly mounted on load-carrying platform from below and rigidly adjoining holding brackets with through longitudinal slots and blind cells made on outer surfaces of brackets in vertical plane square to axis of slots for interaction with locks rigidly secured of holders mounted coaxially to upper axle of rigid frame longitudinally at sides for axial displacement and longitudinal displacement in slots of brackets and spring-loaded relative to brackets by means of compression springs. Holders are provided with handles rigidly secured on free ends, and guide plates interacting with compression springs rigidly secured on inner free ends.

EFFECT: improved convenience in operation, enlarged operating capabilities.

9 dwg