Self-loading container carrier truck

A self-loading container carrier truck comprising a truck chassis, a guideway mounted on said truck chassis and extending longitudinally thereof, a loading-unloading frame of L-shaped configuration comprising a front post portion and a rearwardly extending base portion rigid with said post portion and forming an elbow portion therewith, said base portion operatively engaging said guideway and displaceable along the latter, said loading-unloading frame movable along said guideway between rearmost and foremost positions and also pivotable with respect to said guideway about an axis transverse to said guideway at the rear end of said base portion between a rest position in which said base portion is coincident with said guideway and a pivoted position in which said base portion extends upwardly and rearwardly of the guideway, a hook fixed to the free upper end of said post portion for hooking a container to the latter, a first hydraulic actuator means pivotally connected to the rear end of said truck chassis and to said elbow portion, a carriage displaceable in said guideway between a forward limit position and rearward limit position, and having a front carriage portion located under said post portion when said loading-unloading frame is in rest position, a second hydraulic actuator means connected to said carriage portion and to said elbow portion of said loading-unloading frame, and retaining means to releasably maintain said carriage in its forward and rearward limit positions respectively, said loading-unloading frame taking a container-carrying position when in rest position and in foremost position, and taking a container-releasing and pick-up position when in pivoted and rearmost position, said first hydraulic actuator means extending longitudinally of said truck chassis in the rest position of said loading-unloading frame and operable to move said carriage and loading-unloading frame longitudinally of said chassis between said forward and rearward limit position of said carriage and said foremost and rearmost position of said loading-unloading frame, and also operable to pivot said loading-unloading frame from its pivoted position to its rest position, said second hydraulic actuator means operable to pivot said loading-unloading frame from its rest position to its pivoted position, said second hydraulic actuator means adapted to be operated when said first hydraulic actuator means has moved said loading-unloading frame to its rearmost position, so as to pivot said loading-unloading frame towards its container-relreasing and pick-up position, said first and second hydraulic actuator means being arranged in complementarily opposite relationship, one of said hydraulic actuator means undergoing retraction upon extension of the other hydraulic actuator means, said first and second hydraulic actuator means forming two sides of a triangle when said loading-unloading frame is in pivoted position with said truck chassis forming the third side of said triangle.