To address the problems of high breakage rates, entrainment losses and many unthreshed kernels when harvesting moisture content maize seeds, a seed threshing test was designed based on multifunctional harvester stand by this group.In order to determine optimum operating parameters unit, single-factor experiments orthogonal tests were carried out using drum speed, concave plate clearance feed ra...

Prosopis africana is an under utilized tree crop with immense medicinal and industrial values. Manual threshing of the pods to extract the seeds is uneconomical, time consuming, associated with drudgery and low output capacity. A motorized Prosopis africana pod thresher was designed, fabricated and assessed for performance. The main components of the thresher include hopper, threshing unit, cle...

China is a large flax-growing country, with planting area and production ranking among the top three in world. However, cultivation range of flax very broad, complex, diverse, resulting different scales patterns, making it difficult to apply foreign combine harvesters, lacks dedicated harvester. This research improved design 4LZ-4.0 crawler-type harvester for regional features cropping patterns...

Keywords: Single-plant paddy thresher Whole-feeding Hierarchical multi-rollers threshing Fish scale sieve plate High-precision and automation a b s t r a c t Threshing is an essential pretreatment in rice yield-related traits evaluation and rice thresher is an important study of agricultural machinery automation. However, traditional threshers aim at threshing filled grains with simple function...

This paper concerns the analysis of the relationship between the threshing process in an axial flow harvesting machine and its vibro-acoustic behaviour. Several indoor and outdoor measurements are performed in various operational conditions in order to evaluate their influence on the vibration response of the threshing unit. The test results have been used to identify how the vibration and soun...

In this article we describe the CEP package for compressing EPS files. It belongs to the public domain and was released at the GUST meeting in Bachotek, 1997. The amount of disk space occupied by bitmap graphics is a well-recognized problem. For example, a 300 dpi picture (A4) contains ca 8700000 pixels; assuming that each CMYK pixel occupies four bytes, one obtains ca 35MB of disk space needed...

The longitudinal axial flow threshing cylinder of the full feeding rice combine harvester is widely used in China and works with violent vibration. To explore source excitation affecting vibration to reduce vibration, a finite element modal analysis multipoint input output (MIMO) test were performed solve natural characteristics. By analyzing frequency, we concluded that main reason for resonan...

There are various designs of tools and equipment used for harvesting the crops and threshing it separately. Sickles, hand tools and reapers for grain crops and diggers for tuber crops and rhizomes, operated with different power sources are used. Combine harvesters, both tractor mounted and self-propelled, are being very widely used for different grain crops. Functional requirements and principl...

Obtaining system availability in an engineering design is trickish and challenging, especially when there a reduction capacity; however, it supports maintainability. In this paper, mathematical model for finding the under reduced capacity has been proposed using Chapman Kolmogorov approach with help of transition diagrams associated various possible combinations probabilities. The paper observe...