BS ISO 6689:2021 pdf download – Equipment for harvesting — Combine harvesters and functional components — Vocabulary
This documentspecifies terms and definitions related to combine harvesters and their component parts.lt identifies dimensions and other characteristics aimed at allowing comparison of operations of thecomponent parts, in association with ISO 8210, which lays down methods of measuring characteristicsand performance requirements for the terms defined.
There are no normative references in this document.
3Terms and definitions
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3.1Terms related to crops
deteriorated kernels attributable to the machine, expressed as the percentage by mass, to one decimalplace, of kernels in the sample
Note 1 to entry:The term “grain” covers the whole range of grains,seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester.
visible grain damage
grain damage (3.1.1) where the grain coat appears broken to the naked eye
Note 1 to entry: The term “grain”covers the whole range of grains, seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester.
invisible grain damage
grain damage (3.1.1) which requires instruments or special procedures for determination
Note 1 to entry:The term “grain” covers the whole range of grains, seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester.
unthreshed headunthreshed grain
any head, pod, cob or part thereof from which all or part of the grain has not been detached
material from the grain-cleaning mechanism which is recirculated for reprocessing
material-other-than-grain to grain ratio
total mass of material-other-than-grain (MOG) divided by total mass of grain in the sample Note 1 to entry: The term “grain” covers the whole range of grains, seed, legumes and fruits which are capable of being recovered from crops by a combine harvester.
MOG portion of the crop including weed seed discharged from the combine harvester
harvest residue discharged from the cleaning device(s)
harvest residue discharged from the separating device(s)
moisture content of the sample expressed on the wet basis (mass of water in 100 grams of unprocessed sample)
Note 1 to entry: See ISO 712.
length of the plant from its base at ground level to its tip, when the plant is straightened Note 1 to entry: plant length is expressed in millimetres.
length of the plant stalk still attached to the ground after the crop has been harvested, and having been straightened
Note 1 to entry: Stubble length is expressed in millimetres.
3.2 Terms related to combine harvester
mobile grain-harvesting machine for gathering, cutting, picking, stripping or picking up crop, threshing,separating, cleaning and conveying grain into a grain hopper and discharging harvest residue
rotary device used primarily for transportation perpendicular to the rotating axis
threshing cylinderthreshing drum
rotating assembly, fitted with rasp bars, beater bars or spikes on its periphery and their supports, forthreshing the crop, which, in conjunction with an adjacent element, is primarily to promote threshing,where the crop being threshed is contained between rotating and adjacent elements for less than 360°
rotating assembly similar to a threshing cylinder (184.108.40.206) except that the crop is contained for 360° andmay pass around the rotor axis one or more times
concave-shaped element adjacent to the threshing cylinder (220.127.116.11) or threshing rotor (18.104.22.168), fittedprimarily to promote threshing
Note 1 to entry: In the case of a concave that is permeable to grain flow, either in whole or in part, it has theimportant secondary function of primary separation.
portion of a concave which is permeable, for separation22.214.171.124
permeable element which provides transition from one cylinder/concave unit to the next, or from acylinder concave unit, or concave grate extension(126.96.36.199) to straw walkers (188.8.131.52.4) or rack
Note 1 to entry: See Figure 6.
smooth, stationary,projection or series of adjacent projections fitted to guide crop in a desired direction184.108.40.206.1
arced or helical vane(220.127.116.11) around a rotor fitted to improve material conveyance in the axialdirection18.104.22.168.2
angle of the vane(22.214.171.124) relativeto thedirection material would travel withoutthe influence of thevaneNote 1 to entry : Typically calculated rather than directly measured.
all non-threshing separation elements
rotating element, which in conjunction with an adjacent element, is fitted primarily to promote grainseparation, where the crop being separated is contained between rotating and adjacent elements forless than 360°