Material or article handling – Movable rack having superposed – charge-supporting elements,... – Rack moved vertically by elevating means
Patent
1983-01-31
1988-09-27
Spar, Robert J.
Material or article handling
Movable rack having superposed, charge-supporting elements,...
Rack moved vertically by elevating means
104134, 312201, B65G 110
Patent
active
047738090
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a device in a storage system comprising several units placed one beside the other and provided with shelves or other supports, the units being movable sideways on tracks in order to form a passage between two units moved in opposite directions, the passage allowing access to these two units, and a means movable into such a passage for loading or unloading of articles or goods into or out of the units concerned.
Mobile units for instance for storing of articles on pallets or of other uniform items are common. When there is no need for such units to be accessible they stand close together and usually only one passage is open in each group of mobile units. Thus, the space in the storing premises can be used in a far more effective way than by storing on fixed shelves or units. Especially in freezing houses and the like in which it is desired to use as large a part as possible of the volume for storing, mobile storing units are particularly advantageous. Conventional storage systems having mobile units are usually built for loading and unloading by means of fork trucks, and trucks of this type which are moved on the floor require comparatively broad passages between the units. Latterly, in storage premises with fixed units, rail-guided handling devices have been used which by cranes or trucks can be moved on rails in narrow passages between the fixed units. Because of the tracks need for moving the units, storage systems having mobile cranes or trucks guided on rails in the floor cannot be used, since crossing rail systems cannot be allowed.
It is desirable that old freezing houses which are equipped with fixed storing units or shelves in a simple way could be rebuilt for mobile storage units. With today's technique this is difficult and expensive since recesses in the floor for the tracks of the units, which are necessary for handling by means of floor-running trucks, cannot be made without causing an increased temperature in the freezing house. The recesses are usually obtained by applying a casting to the floor up to the upper surface of the rails, since in most cases the floor construction does not allow the tracks to be sunk in the floor, and this results in differences in level of the different premises. Also after such a rebuilding the freezing house would not be suited for handling by means of rail-guided handling devices because of the crossing rails. It is further desired that such handling should be possible.
The object of this invention is to provide a device for storage systems of the type described with a device that requires a minimum of changes in the floor of the building and makes it possible to use rail-guided handling cranes.
The essential characteristics of the device according to the invention are that the tracks carrying the movable units are composed of interspaced sections placed on the floors or the like which are provided with upwardly directed support wheels or rollers, and that in the interspaces uninterrupted rails extend for a handling device, known per se.
Generally, the invention solves the problem of eliminating crossing tracks for the load-carrying units and the handling device, i.e. piling cranes and narrow-gauge lifting trucks.
The invention also solves the problem in existing freezing houses and similar premises of arranging rails for handling devices as well as tracks for the load-supporting storing units without the ones influencing the others. Also, the installation can be made without increasing the temperature in the freezing house or making arrangements in the floor of the freezing house other than normal fastening operations.
Embodiments of storing systems according to the invention will now be described with reference to the accompanying drawing, in which FIG. 1 schematically shows a storage system according to the invention, seen from above, and FIG. 2 to an enlarged scale shows a portion of the lower part of mobile units and track system for these units, seen in a direction perpendicular to the direction of movement of the units, in an e
REFERENCES:
patent: 3921828 (1975-11-01), Suizu
patent: 3924300 (1975-12-01), Hilger et al.
patent: 3977542 (1976-08-01), Stolzer
patent: 4229135 (1980-10-01), Malmros
patent: 4259907 (1981-04-01), Schuck
Magnusson Lars
Petersson Tomas H.
Steinfeldt Alve S.
Bucci David A.
Electrolux Constructor Aktiebolag
Miller Alfred E.
Spar Robert J.
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