Solid material comminution or disintegration – Apparatus – With sink drain stopper interlock
Patent
1986-07-01
1988-03-22
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With sink drain stopper interlock
2411017, 241241, B02C 1818
Patent
active
047323329
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a pick-up and delivery vehicle comprising a body at the front of which there is provided a pick-up mechanism including a pick-up linking up with a conveyor duct terminating in the body, into which duct extend from one end prongs of a pusher wheel and from the other end cutting knives mounted on a rotary cutter beam or the like. Such a pick-up and delivery vehicle is described e.g. in European patent application No. 0 074 172.
Such generally known pick-up and delivery vehicles are complicated, prone to trouble and breakdown, require high maintenance cost, suffer heavy wear and, hence require high writings-off and, moreover, are difficult to operate. Since such vehicles are designed for picking up grass, beet leaf and the like and, after transport, depositing the same in a feeding trough or on a silage pile, it is important that the product to be loaded is cut into short pieces. The resultl is that the material picked up at the front and discharged at the back can be easily processed and, moreover, that proper removal of the oxygen during the compaction of the silage pile is ensured, resulting in a better quality. Cutting the product into short pieces means that a large number of knives have to be mounted side by side in the conveyor duct. Said knives have to be replaced or sharpened several times a day; a blunt knife requires a large tractor capacity.
In the prior art vehicles sharpening or replacing the knives has to be carried out in a strongly stooped or creeping posture, mostly under the vehicle. The result is that the knives are often not sharpened in time, thus materially increasing the fuel consumption of the tractor.
It can be observed in respect of the protection of the knives against foreign articles that, in the prior art constructions, this is effected mechanically by means of one or more springs and lever systems, which can be blocked easily by dirt and rust.
Besides, the drawhook or pole of the prior art pick-up and delivery vehicles is mostly designed as a fold pole, since otherwise the prongs of the pick-up will engage the product as the vehicle is rolled on or off the silage pile, so that this product will be carried along the the pick-up and delivery vehicle becomes stuck after a few moments. A fold pole, however, renders said vehicle more complicated and more expensive.
It is observed that two types are distinguished in the prior art pick-up and delivery vehicles, i.e. one fitted with a pick-up in a front or leading position and one fitted with a trailing pick-up. The trailing pick-up has the advantage of being more suitable for high loading speeds and being less expensive, but has the drawback that, as all vehicles hitherto known have a long front structure (i.e. rather a long portion ahead of the body front) the tractor driver has a poor view of the picking-up operation.
Moreover, owing to their long front structure these vehicles have a larger wheelbase (i.e. the perpendicular distance between the rear axle of the tractor and the axle of the pick-up and delivery vehicle). A result of this large wheelbase is that the space underneath the pick-up is adversely affected when the vehicle is driven up the slopes of a silage pile. Another drawback of this large wheelbase is that the train is difficult to manoeuvre on a small surface area.
It is an object of the present invention to remove these drawbacks.
To this end, according to the invention, a vehicle of the above described type is characterized in that adjacent the front of the body, there is provided a cross-beam designed at least in part with cylindrical portions mounting rotary knife attachment elements. Said elements can be rotated in such a manner that the knives can be easily removed from the front in forward and/or upward direction. It is thus possible for the tractor driver to replace or sharpen the knives at normal standing/working height.
About the cylindrical portions of the cross-beam, there may be provided two or more rings connected by a cross-bar and the knives may be mounted on said cross-
REFERENCES:
patent: 2892478 (1959-06-01), Gronberg
patent: 3027925 (1962-04-01), Gronberg
patent: 4612941 (1986-09-01), Kunde
European Patent Application, 74172, 3-1983.
Rosenbaum Mark
Schuitemaker Machines, B.V.
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