Patent
Improvements in and relating to surfaces
TLDR
In this article, an improved methods of designing surfaces (53,453) were proposed to minimize the effects of changes in the coefficients of friction between so-called bulk fluids and the surfaces.Abstract:
The disclosure relates to improved methods of designing surfaces (53,453)
whereby to minimise the effects of changes in the coefficients of friction
between so-called bulk fluids and the surfaces. The disclosure also
relates to surfaces designed in accordance with the methods. A device (21) embodying the invention, for metering the mass flow of
bulk material, such as grain or other crop material, comprises a sensor
member (51) with a curved surface (53) installed adjacent the outlet of a
conveyor (12). The sensor member (51) is mounted for pivoting about a
transverse axis (P) and is subject to a moment (M) resulting from the
material flow along its surface (53). A spring means (66) is provided to
keep the sensor member (51) in zero load position. The displacement of
the sensor member (51) is proportional to the mass flow rate. Changing
friction coefficients µ between the bulk material and the surface (53) will
affect the flow pattern therealong, but an array (70) of length and/or inlet
orientation angles can be found relative to which the measured moments
(M) remain substantially insensitive to these flow changes. Such metering devices may be used in grain and forage harvesters,
wherein they need less recalibration under varying harvesting conditions.read more
Citations
More filters
Patent
Multi-sensor crop yield determination
TL;DR: In this paper, a crop yields sensing system comprises a first sensor of a first type associated with a portion of a harvester to output first signals facilitating determination of crop yield and a second sensor of another type different than the first type to output second signals facilitating determining the crop yield for the portion of the harvesters.
Patent
Crop width measuring means
TL;DR: In this article, a crop width measuring means for measuring the width of crop received and/or processed by an agricultural machine, such as a combine or a forage harvester, is presented.
Patent
Method for determining a mass flow composed of bulk material
TL;DR: In this paper, a method for determining a mass flow composed of bulk material, in particular grain, which is conveyed by means of a continuous, circulating conveyor, having planar conveyor elements, from a lower bulk material receiving area to a higher bulk material delivery area, in which the bulk material delivered by the conveyor is deflected by a guide surface disposed in the bulk materials delivery area toward a measuring device, wherein the mass flow is determined by the measurement of a resulting force (F_G) exerted on a sensor surface of the measuring device.
Patent
Harvesting machine with a measuring device to determine the yield of harvested and/or processed crop
TL;DR: In this paper, an optical position acquisition device e.g. laser interferometer, is provided for acquisition of position of the measuring surface, where position depends on the throughput of the harvested crop.
Patent
Mass flow apparatus for powdered and granulated solids and accumulated weight
TL;DR: A mass flow apparatus for measuring the mass flow rate of powdered, granulated or solid particulate materials includes a material inlet (24), a material outlet (27), a measuring chamber (25) connecting the inlet and the outlet, comprising a movable element with a fixed axis of rotation located in the flow path and having attached to the axis-of-rotation a flow sensor as discussed by the authors.
References
More filters
Patent
Flow metering device
TL;DR: In this article, a clean grain weight rate metering device (21) is provided generally at the discharge end (30) of a combine harvester (1), where a sensor member (51) disposed to be acted upon by the clean gram flow as it issues from the clean grain conveyor (12), and a transducer (52) associated with the sensor member to continuously generate a signal proportional to the clean-grain weight rate.
Patent
Mass flow metering device
TL;DR: In this article, a sensor member is mounted for pivotment about a transverse axis (P) and is subject to the moment (M) resulting from the material flow along its surface (53).
Patent
Method of and apparatus for weighing a continuous stream of fluent material
TL;DR: In this paper, a method of and an apparatus for weighing a continuous stream of fluent material (16) includes a weighing means (12) which, in use, in the direction of flow of the material, is arranged in a plane which is at an acute angle relative to a vertical plane.
Patent
Mass flow meter
TL;DR: In this paper, a sensor member with a curved surface installed adjacent the outlet of a conveyor is mounted for pivotment about a transverse axis and is subject to the moment resulting from the material flow along its surface.