DE8416162U1 - Device for spreading granular material, in particular artificial fertilizer or seed - Google Patents

Description

-1-

Hubert Wiegelmann Ing.(grad.), 4796 Salzkotten

Device for spreading granular material, in particular artificial fertilizer or seed

The invention relates to a device for spreading granular and powdery material, in particular artificial fertilizer, seed or other spreadable materials with two rotating centrifugal discs arranged at a distance transverse to the direction of travel, next to each other, each under the outlet of a storage container, as shown for example in DE-AS 2805879 or Swiss patent specification 364381. Such devices are widespread in both single-disk and double-disk versions, which are attached to the standard three-point linkage of an agricultural tractor and driven by the tractor's power take-off shaft via an angle gear or V-belt. With these devices, the spreading material can be distributed significantly beyond the construction width and the spreading width can be regulated by the spreading disc speed and by changing the distance of the spreading discs from the spreading plane, which is carried out using the three-point hydraulics that can be raised and lowered. It is also possible to attach it to a so-called trailer spreader. All of these designs require a large distance between the spreading discs and the area to be covered during the process in order to achieve economical spreading widths.

The German patent application DE 3221764 shows a device in which the spreading discs arranged next to each other are aligned both in the direction of travel, i.e. towards the connecting elements of the three-point hydraulics arranged almost in a vertical plane and towards the centre of the road.

-2-

which leads to a small distance between the spreading discs and the spreading plane, since the spreading material is thrown out at an increasing angle to the spreading plane and thus a large spreading width is achieved.

The lifting height of the three-point hydraulics of an agricultural tractor is therefore sufficient to raise the spreading discs above the grain tips during late fertilization and to let the spreading material trickle gently between the sensitive ears, but this does not apply in the area of the middle of the road, since here, due to the inclined position of the flat spreading discs, part of the spreading material does not have an increasing angle, i.e. trajectory, to the spreading plane, but on the contrary is thrown in the direction of the spreading plane and leads to injuries to the ears.

This effect is particularly negative in the area of the middle of the road where fertilizers are

: _; species, because the inclination of the flat struts

discs to each other a sharp demarcation of the scattering >i images of the scattering discs is achieved and thus no

There is sufficient overlap, which leads to over- or under-fertilization and ultimately to yield losses.

The object of the invention is to eliminate the described disadvantages and to create a device in which, even in the area of the middle of the road , an ascending trajectory in the discharge area to the spreading plane is provided for the entire spreading material and a sufficient over-

-3-

overlap between different spreading materials.

This is achieved according to the invention by the ■

to the centre of the road and in the direction of travel

Spreading discs that run around axes or shafts are concavely shaped, which results in a circular section or area on the spreading disc that is almost parallel to the spreading plane and prevents spreading material from being thrown diagonally downwards towards the spreading plane in the middle of the road. This also ensures that there is sufficient overlap of the spreading patterns of the opposing spreading discs for different types of fertilizer, and under- and over-fertilization in the road area is avoided.

The invention is illustrated in an embodiment in the drawing. Bs shows

Fig.1 Shows the rear view of the device according to the invention.

Fig.2 Shows the side view with the connection elements of the three-point hydraulics.

The concavely designed spreading discs (2,2") according to the invention are held by the shafts or axles (1»1')» whereby the upper side of the shafts protrudes into the storage container. The throwing elements (3,3*) are attached to the spreading discs (2,2*). The number (6,6') marks the outlet openings of the storage container (7). The letter (a,a ^f ) indicates the angle of the concave size of the spreading discs, whereby the number (UtU*) is the

· f ·

-U-

acute-angled bevel gear with the angle (b,b*) which indicates the angular size of the gear and the inclination size towards the center of the road.

The frame (10) with the connection elements of the three-point hydraulics (8,8^,9) carries the reservoir (7) and also the gearboxes (U,U") with the concave spreading discs according to the invention as well as the gearbox (11) with the PTO connection (12).

Fig.2 shows view A, the side view of the device where the angle (C) indicates the inclination of the spreading disc in the direction of travel (F). The number (13) indicates the center of the road and (H) the spreading plane.

Claims (1)

<f ■V. II· · ·· · &iacgr;{ lit··· ill·« « . « &eegr; s &rgr; r ü che : r 1. Spreader for spreading granular and/or powdery Cut, especially artificial fertilizer or seed with two at a distance of ^: ,- transverse to the direction of travel next to each other, each under [ the grit outlet of a storage container, to the centre of the road and inclined in the direction of travel, arranged scattering discs, since characterized in that the rotating around the axes (1,1'') the scattering discs (2,2*') with the throwing elements (3,3* ') concave shaped, and the concave size with the angle (a) preferably way, approximately the angle (b), the inclination size of the angle gear (4,i»'') towards the centre of the road, as well as the angle (c) which indicates the inclination in the direction of travel, whereby a circular section is formed on the spreading discs (2,2"), which extends towards the centre of the road and in the direction of travel and is approximately parallel to the spreading surface or spreading plane. 2. Spreading material and claim 1, characterized in that the concavely designed spreading discs (2,2* ') have the shape of a truncated cone or a concave mirror. 3. Spreader according to claim 1 and 2, characterized in that the throwing elements arranged on the spreading discs (2, 2*') are adapted to the concave shape. t. Spreader according to claim 1 and 2, characterized in that the angles (a, b) and (c) are smaller than 90°. S. Spreader according to claim 1 and ^u characterized in that the angles (a,b) and (c) are in the range between 1 to 2o°. If It·· ·· · ti * · · 6. Spreader according to claim 1, 4 and 5, characterized in that the angles (a, b) and (c) are of different sizes. 7. Spreader according to claim 1, characterized in that the outlet openings (6,6") on the storage container (7) are arranged where the circular section of the inner surface of the spreading disc runs approximately parallel to the spreading plane. 8. Spreader according to claim 7, characterized in that several outlet openings are arranged in this area are. 9. Spreader according to claim 1, 7 and 3, characterized in that connection elements of the three-point hydraulics (8, 8* *, 9) are arranged in front of the circular sections lying approximately parallel to the spreading plane when viewed in the direction of travel. t t &igr; ir«