Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1994-11-08
1996-08-13
Bidwell, James R.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
4145259, B65G 2500
Patent
active
055447392
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to the field of temporary storage of bulk goods, such as in a composting tunnel, comprising a floor, walls and a cover, feed means for feeding the bulk goods onto the floor and discharge means for discharging the bulk goods from the installation.
BACKGROUND OF THE INVENTION
An installation of this type is generally known. It can be used in particular for the preparation of compost, for example for the cultivation of mushrooms.
The bulk goods are fed in at one end of the floor and discharged at the opposite end. In the case of a composting tunnel, the compost can develop in the period between feed and discharge. For transport over the floor it is known first to lay a net on the floor and then to tip the bulk goods onto said net. The net is slowly pulled over the floor and a supplementary layer of plastic can be placed between floor and net in order to reduce friction.
The known installations have a number of disadvantages. Firstly, the layer of plastic prevents good aeration of the bulk goods. This design is therefore not very suitable for composting tunnels. Furthermore, the dimensions of the known installation are fairly large. A large chamber is needed to receive the finished compost which comes from the tunnel. Moreover, especially when preparing compost, yapours hazardous to health frequently arise. In a large chamber of this type it is not easily possible to provide good ventilation everywhere and consequently carrying out work in said chamber is not without problems.
It is known from DE-A 3 910 847 to construct the floor with a number of floor plates to receive the bulk goods, which plates are slidably supported in their longitudinal direction in such a way that the bulk goods can be discharged by joint movement of the plates from their rest position and that by repeatedly moving back some of the number of plates individually to the rest position, the bulk goods are prevented from moving back by the other plates which, in each case are not moving. It is thus possible to discharge the bulk goods from the floor without having to use a net with a layer of film beneath it and without staff having to enter the tunnel.
Installations of this type can have a large floor surface area. One composting installation, for example, has several composting tunnels alongside one another, which together form an appreciable floor surface area.
SUMMARY OF THE INVENTION
The object of the invention is to provide a drive for the movable floor plates, with which, on the one hand, all floor plates, even in the case of a large floor surface area, can be actuated and, on the other hand, the drive can remain limited and thus economical.
This object is achieved by providing a drive means for an installation of this type, which drive means comprises a frame with a base consisting of a number of base plates, each of which can be coupled to an opposite associated floor plate, which base plates are each slidable in the frame in their longitudinal direction and at least a few subsets of which plates are drivable by their own drive installation.
In the case of collective driving of all floor plates coupled to the drive means, the bulk goods, such as compost, present on said floor plates move unhindered with said plates. Moving back one or a few floor plates again has no effect on the bulk goods and the bulk goods can be moved forwards by successively repeating this movement sequence.
Preferably each base plate can be driven independently by means of an associated piston-cylinder device which is coupled to the frame.
To simplify the coupling of the drive means and floor plates the latter each preferably have a downwards pointing hook element into which an upwards pointing hook element of a base plate can hook. Hook elements of this type can, for example, be caused to interact with one another by sliding said elements sideways into one another.
However, preference is given to a design in which the hook elements of each base plate are movable in the vertical direction in such a way that
REFERENCES:
patent: 4184587 (1980-01-01), Hallstrom
patent: 4798802 (1989-01-01), Ryan
patent: 4966275 (1990-10-01), Hallstrom, Jr.
patent: 5000647 (1991-03-01), Foster
patent: 5092732 (1992-03-01), Foster
patent: 5263573 (1993-11-01), Hallstrom, Jr.
Christiaens Jozef P. M.
Christiaens Petrus G. A. M.
Bidwell James R.
Christiaens B.V.
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