2002 Straw distribution wagon

Uniform straw distribution in the transverse and longitudinal directions depends to a large extent on the condition of the material (uniform stalk length, uniform distribution and storage density) on the loading area of the bedding equipment and the continuous flow of material in the machine.

Depending on the type of salvage, straw of different density and moisture content is present, crushed, cut and chopped in layers in the form of round or square bales. The bales are fed via the scraper floor to the shredding rollers, which are designed to produce a uniform crop flow. From there, the straw is conveyed to the throwing disc, which is arranged vertically at right angles to the direction of travel, and ejected by the wind-assisted tower. The tests show that a continuous flow of material cannot be achieved, but that there are certainly possibilities for improvement. Of course, jamming of the bales on the drop sides must be avoided, so that feeding to the shredding rollers can be as continuous as possible. Round bales are placed with the axle at right angles to the direction of travel, square bales so that the layers are vertical. The feed must be so great that there is always a slight pressure of the bale on the shredding rollers.

Blockages in the space between the shredding rolls and the throwing surface were partly due to the geometry of the space and the material guidance, but more likely to frequent blockages in the ejection tower. Here, several measures led to success.

 1.     The number of blades on the ejection tower was increased from 3 to 6 (provided by the manufacturer).

 2.     The tower was significantly shortened and the cross-section widened to reduce friction between the straw and the tower.

 3.     The tower was given a flap at the end that could be pivoted about a horizontal axis, with the adjustment of which the throwing distance could be changed.

Subprojects

Analysis of the straw chain with the aim of determining the structural condition of different types of straw under different recovery techniques when feeding the bedding device.

To measure the effects of straw breakdown and straw distribution on the load-bearing capacity of the manure mattress and its function in the sloping floor barn

To check the function of the bedding vehicle in its individual assemblies in practical use and, if necessary, to develop proposals for modification or redesign together with FAL Betriebstechnik.

Publications :

Penetration Resistance and Water-Holding Capacity of Differently Conditioned Straw for Deep Litter Housing Systems  [ more...  ]

Effects of Straw Handling on Dust Reduction and Technological Properties [ more ... ]

in cooperation with HAWE-Wester

supported by: German Foundation for the Environment