𝔖 Bobbio Scriptorium
✦   LIBER   ✦

PM—Power and Machinery: Design of a Model ‘Spot Plough’ for Inversion of the Soil Slice within the Furrow

✍ Scribed by Koichi Shoji

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
656 KB
Volume
79
Category
Article
ISSN
0021-8634

No coin nor oath required. For personal study only.

✦ Synopsis

A model spot plough to invert the soil slice within its own furrow was designed and tested in a soil bin, with a view to overcoming the disadvantages of conventional tillage systems with mouldboard ploughs. The model was especially designed to avoid soil clogging, whilst the basic structure was not altered from that surveyed from previous research. Followed by the share and main mouldboard at the beginning of the inversion, a tilted disc coulter (TDC) was located on the other side of the main mouldboard to assist the spot inversion and to reduce relative motion to the soil. Towards the end, the tilted disc coulter was replaced by a sub-mouldboard. Optimum width-to-depth ratio and width of the mouldboards were also considered. The mouldboards were expressed as helicoidal surfaces, and were fabricated from a plate of polyvinyl chloride. A series of experiments showed that the model spot plough performed well in wet-plastic soil, acceptably in dry-powdery soil at higher speed, and somewhat less steadily in dry-solid soil conditions. In any soil condition, the function of the rotating tilted disc coulter was found to be essential for stable operation.

📜 SIMILAR VOLUMES

PM—Power and Machinery: A Three-stage So
PM—Power and Machinery: A Three-stage Soil Layer Mixing Plough for the Improvement of Meadow Soil, Part 2: Soil Bin Experiments
✍ C. Zhang; K. Araya 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 349 KB

The objective of this work was to develop a special machine, a three-stage soil layer mixing plough which would achieve longer sustainability of drainage for the improvement of meadow soil. In this paper, the results are presented from soil bin experiments with the three-stage soil layer mixing plou

PM—Power and Machinery: A Three-stage So
PM—Power and Machinery: A Three-stage Soil Layer Mixing Plough for the Improvement of Meadow Soil, Part 3: Field Evaluation
✍ C. Zhang; K. Araya; M. Kudoh; F. Liu; H. Jia; H. Zhang; S. Yang 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 688 KB

A prototype three-stage soil layer mixing plough was designed and built in Japan, based on the results of the soil bin experiments conducted using a half-size model ploughs described in Part 2 of this paper. This machine was transported to China for "eld tests and this paper presents the trash mixin

PM—Power and Machinery: A Three-stage So
PM—Power and Machinery: A Three-stage Soil Layer Mixing Plough for the Improvement of Meadow Soil, Part 1: Mechanical Properties of Soils
✍ C. Zhang; K. Araya 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 311 KB

Meadow soil in China consists of extremely "ne soil particles, is quite impermeable and has particular mechanical properties. This paper deals with the mechanical properties of the three horizons (Ap, A and Cg1) of meadow soil as an aid to understanding the draught requirement of a three-stage soil

PM—Power and Machinery: Development of a
PM—Power and Machinery: Development of a Slow Active Suspension for Stabilizing the Roll of Spray Booms, Part 2: Controller Design
✍ K. Deprez; J. Anthonis; H. Ramon; H. Van Brussel 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 265 KB

To prevent local under-or over-application of chemicals, a spray boom must be kept parallel to the soil. On a slanted "eld, the operator, driving a sprayer equipped with a passive boom suspension, has to turn the boom manually in a skewed position. This paper presents the development of a slow activ

PM—Power and Machinery: Design and Testi
PM—Power and Machinery: Design and Testing of an Automatic Machine for Spraying at a Constant Distance from the Tree Canopy
✍ E. Moltó; B. Martı́n; A. Gutiérrez 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 169 KB

The reducing cost of electronic control systems encourages the development of new pest control equipment that reduces the losses of product and improves the uniformity of the distribution. An electromechanical system capable of following-up the tree canopy at a constant distance was designed at Inst

PM—Power and Machinery: Validation of a
PM—Power and Machinery: Validation of a Finite Element Program for the Design of Roll-over Protective Framed Structures (ROPS) for Agricultural Tractors
✍ A. Fabbri; S. Ward 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 382 KB

The design and testing of roll-over protective structures (ROPS) present considerable challenges for small-to medium-sized agricultural tractor manufacturers. Moreover, these manufacturers experience di$culties in using commercial "nite element packages. As a consequence, a "nite element program, pr