Aiming at the problems of poor applicability traditional header height detection mechanism, stability and large lag automatic control system combine harvesters, an harvester was designed, which mainly included profiling controller, proportional valve, manual operation handle display module. The mechanism composed angle sensor, plate, torsion spring other structures. key structural parameters we...

colza (canola) is a crop with high rate of grain loss during harvesting. at harvest, semi-dried grains of canola’s pods are either opened or dropped due to mechanical impacts. therefore, lots of grains drop before entering combine head. another obstacle to successful harvest of canola is that ripe grain's pods are twisted together. this results in heavy grain loss at dividers of combine pi...

Cleaning loss is an important parameter to judge the performance of a corn combine harvester. At present, there exists phenomenon that cleaning rate detection devices have long signal processing time and low recognition accuracy. To solve this problem, based on principle impacting piezoelectric effect, signals kernels impurities are analyzed by means frequency spectrum method obtain characteris...

In order to improve the operational performance of self-developed 4HLB-4 half-feed four-row peanut combine harvester, single-factor and multifactor field tests were conducted on key parameters affecting quality harvesting. The response surface methodology was used study effects forward speed, clamping height, picking roller rotational cleaning sieve vibrational frequency loss rate impurity rate...

grain loss monitors are installed on combine harvester and make it possible to measure grain loss on different parts of the combine. the instrument permits the operator to adjust a proper ground speed to keep grain loss within an acceptable range. in this study a loss monitoring system was implemented to measure grain losses continuously on straw walker and sieves. two grain loss monitors (kee ...

Because of their constant renewal, it is necessary to acquire fresh named entities (NEs) from recent text sources. We present a tool for the acquisition and the typing of NEs from the Web that associates a harvester and three parallel shallow parsers dedicated to specific structures (lists, enumerations, and anchors). The parsers combine lexical indices such as discourse markers with formatting...