Performance of wheel and track running gear on liquid manure spreaders
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Notice bibliographique
Résumé
McBride, R.A., McLaughlin, N.B. and D.W. Veenhof. 2000. Performance of wheel and track running gear on liquid manure spreaders. Can. Agric. Eng. 42:019-025. A field experiment was conducted to characterize soil-vehicle interactions and to measure tractor power/fuel requirements when hauling a fully loaded tank spreader (18 m) fitted with rubber tracks (2721x635), high flotation tires (28L26) or conventional truck tires (445/65R22.5). A second objective was to apply an existing soil compaction model to the data from this field trial and to determine if its estimates of wheel rut depth were reasonable. The experiment was carried out in late autumn on a harvested soybean field (silt loam soil) located in southwestern Ontario. Fuel consumption and drawbar draft were measured during the traffic treatments with an instrumented tractor, and selected soil properties were measured afterwards. An analytical-type soil compaction model was used to estimate the wheel rut depth for the two pneumatic tire treatments. The type of running gear had a highly significant effect on both drawbar draft and fuel consumption (p < 0.001), with the tracks having the highest values (mean 24.6 kN and 21.5 L/h, respectively) and the flotation tires having the lowest (mean 13.9 kN and 16.9 L/h, respectively). The truck tires left ruts with a mean depth of 42.3 mm, while the flotation tires left cleat impressions that were barely discernable. A pedotransfer function was used to estimate the preconsolidation stress (26 kPa) and compression index (0.173) of the plow layer soil and, with these and other input data, the soil compaction model estimated rut depths that were quite comparable to those observed. The only ruts produced by the tracks were those of the track grousers (about 48 mm deep), but extensive soil shearing was evident. The tracks and truck tires produced significantly higher (p < 0.05) measured dry bulk densities at a depth of 150 mm when compared to those induced by the flotation tires. Soil cone penetrometer measurements were not as conclusive in distinguishing the impact of the running gear treatments on soil structural conditions. In general, however, flotation tires appeared to be the preferred running gear option with respect to several key parameters (fuel consumption, drawbar draft, wheel rut depth, dry bulk density) under these particular soil and loading conditions.
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Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle