2002 Straw distribution trolley

Uniform straw distribution in the transverse and longitudinal direction 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 spreader and the continuous flow of material in the machine.

Depending on the type of baling, the straw is crushed, cut and chopped into layers in the form of round or square bales of varying density and moisture content. The bales are fed via the scraper floor to the ripping rollers, which are designed to produce a uniform flow of material. From there, the straw is conveyed to the throwing disk, which is arranged vertically at right angles to the direction of travel, and ejected by the tower with wind assistance. The tests show that a continuous flow of material cannot be achieved, but that there is certainly room for improvement. Of course, jamming of the bales on the side walls must be avoided so that the material can be fed to the ripping rollers as continuously 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 large enough to ensure that there is always slight pressure from the bale on the ripper rollers.

Blockages in the space between the tearing rollers and the throwing surface were partly due to the geometry of the space and the material feed, but more likely to frequent blockages in the ejection tower. Several measures led to success here.

1. the number of vanes on the throwing disk was increased from 3 to 6 (as intended by the manufacturer)

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

3. the tower was fitted with a flap at the end that could be pivoted around a horizontal axis to adjust the throwing distance.

Sub-projects

Analysis of the straw chain with the aim of determining the structural condition of different types of straw using different straw mounding techniques when feeding the straw spreader

To measure the effects of straw digestion 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

funded by: German Environmental Foundation