Storage rack with overhead loading and unloading

Material or article handling – Plural – static structures for supporting discrete loads and... – Load-underlying members

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Details

414155, 414191, 414286, 414626, B65G 104

Patent

active

058488677

ABSTRACT:
A storage rack is loaded and unloaded from the top with pallets carrying articles to be stored in and retrieved from the rack. The rack consists of a series of spaced columns arranged in parallel rows defining wells accessible from the top; the columns have vertically spaced, upwardly facing sets of steps protruding to an equal extent towards the centre of the wells. A crane is horizontally movable over the rack and stoppable above a selected well; it has a hoisting block which can be lowered between and guided by the columns of the selected well; a pair of hooks are pivoted to the hoisting block for movement towards and away from each other between opened and closed position; a pair of Z-shaped pallet holding beams adapted to carry a series of pallets aligned in end to end relation are suspended from the hooks and clear the steps when in closed position. When the desired set of steps is reached, the hooks are opened causing spreading apart of the top portion of the Z beams to allow their hooking unto these steps. The reverse operation is effected for unloading. The hooks can handle the Z beams to pick up the aligned pallets from and deposit them onto a supporting surface. The system is particularly designed for loading green concrete blocks into and unloading cured concrete blocks from a curing kiln housing the rack. Preferably, the green blocks are left in the stored position between the columns of the kiln just to attain sufficient compressive strength; they are then unloaded and directly stacked on the floor beside the rack within the kiln with the intermediary only of the pallets for completion of the curing process in the kiln; thus the number of columns and Z beams can be decreased without reducing the effective curing capacity of the kiln. Also, the provision of a Z beams accumulating device is no longer required.

REFERENCES:
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patent: 2605004 (1952-07-01), Grueneberg
patent: 3011661 (1961-12-01), Thomas et al.
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patent: 4338056 (1982-07-01), Abrahamson et al.
patent: 4572719 (1986-02-01), Theobald
patent: 4592692 (1986-06-01), Suiza et al.
patent: 4778325 (1988-10-01), Stolzer et al.
patent: 4895101 (1990-01-01), Knorr
patent: 4923354 (1990-05-01), Giuliano et al.

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