DE102008052269B4 - Device for checking the transverse distribution on double-disc spreaders - Google Patents

Abstract

Device for checking the transverse distribution of spreading material applied by means of a disc spreader (4), comprising collecting trays (6, 7, 8, 9, 12) arranged transversely to the direction of travel with the opening cross section of the collecting trays (6, 7 , 8, 9, 12) in dividing walls (11) and a measuring device (18) of juxtaposed glass tube (19) with upper hopper (20) and scale, wherein the when traversing the drip trays (6, 7, 8, 9 , 12) filled by each of them collected material in one of the glass tubes and the distribution accuracy is checked over the distribution width by level comparison of the material to be diffused in the glass tube, characterized in that each four adjoining, reflection-reducing walls (11) characterized from top to bottom truncated pyramidal to a Gefach rejuvenate, that the Gefachwände (11) opposite an imaginary horizonta len plane at an acute angle truncated pyramidal down, and that all compartments to a loose in the opening cross-section of the drip trays (6, 7, 8, 9, 12) insert can be used (10) and all inserts (10) are stackable.

Description

The invention relates to a device for checking the transverse distribution of spreading by means of a disc spreader, consisting of transversely to the direction of travel uniformly spaced collecting trays inserted into this, the opening cross section of the trays dividing into compartments walls and a measuring device of juxtaposed glass tube with upper hopper and scale, wherein the scattered when passing over the drip trays of each of them collected grit filled in one of the glass tubes and the distribution accuracy over the distribution width is checked by level comparison of the material to be diffused in the glass tube.

The disk spreaders predominantly used in agriculture for the distribution of mineral fertilizers have great advantages in terms of ease of use, high performance and low acquisition costs.

The function of a disc fertilizer spreader is largely determined by the accuracy of metering the fertilizer mass flow to the distributor disc and distributing the fertilizer through the distributor disc. While sensor systems for measuring and regulating the mass flow already exist for the metering, no sensor technology for checking or measuring the distribution of the fertilizer is available in practice, or proposals relating to this could not be put into practice.

Fertilizer manufacturers and test institutes can test the distribution accuracy of a disc fertilizer spreader with the fertilizer to be applied to the desired working width in elaborate test halls and then work out the setting for a good distribution result. Even larger manufacturers own such test halls.

However, the physical properties of a fertilizer can change due to fluctuating conditions in the production process, on the transport route, through storage and the weather conditions during the application process. This results in the requirement or the recommendation to carry out a review of the fertilizer distribution immediately before the Ausbringvorgang on the field. This enables an optimization of the fertilizer distribution by changing the setting of the disc fertilizer spreader. From the review, for example, there are findings as to whether the right and left dosing of a two-disc spreader delivers the same spread rate, whether the spreader blades on both spreaders are in order, and so on.

In practice, testing facilities are known, consisting of drip trays to be inserted therein, anti-reflection honeycomb and measuring tube to compare the collected in the drip trays fertilizer quantity (Prospectus of the applicant "RAUCH-AXIS-11.2006", page 10 and operating and installation instructions "SMOKE / KUHN for the practice test set PPS1 ", imprint 5900494-a-DE-0105).

To check the distribution accuracy are at least 3 , but often up to 5 or with elaborate tests up to 25 and more measuring points required. To increase the measuring accuracy, at least one measuring point is required 2 Tray in the direction of travel set up in a row, the fertilizer content is poured together after the Ausstreu- and testing in the direction of travel. Depending on the number of measuring points transversely to the direction of travel, a corresponding number of measuring tubes must be present. In the test sets used in practice, three measuring tubes are arranged on a stand. By using several such sets, several 3-legged stands with measuring tubes can be set up side by side; at the next 3 Measuring points frequently occurring five measuring points but then remains empty a measuring tube, which is a bit confused when comparing levels.

The honeycombs to be inserted into the drip trays are formed from individual plastic strips which are provided transversely to their extent with predetermined breaking points arranged at a distance from the honeycomb into which the plastic strips running transversely thereto are inserted in comb-like fashion. The complete insert is then placed in the drip tray. In the honeycomb thus formed, the walls are perpendicular to the bottom of the drip tray. Much skill and time is required in assembling the honeycombs and positioning the honeycomb insert in the trays.

For transport, the drip trays can be stacked in each other so that they occupy little space. For the simultaneous transport of the trays and the honeycomb, which are not nestable, often more than the entire trunk of a car is needed.

Although the insight of the farmers for the necessity of checking the disc fertilizer spreaders with the spreadable, expensive fertilizer by means of such a measurement method is present, this method has not prevailed not least because of the complexity of handling not everywhere.

The DE 14 57 844 A1 describes a method for determining the scattering distribution by collecting the grit in a plurality of drip trays and one for carrying it out provided with a plurality of collecting trays according to the preamble of claim 1. The collecting trays are provided on their upper side with a grid which is formed from vertically intersecting strips, with the upper sides of the vertically extending strips tapering upwards. The grid attached to the upper side of a respective drip tray is intended to prevent the grit particles collected during the spin-on from jumping out of the drip tray and thereby falsifying the measurement result. The upper taper of the strips is used to prevent reflection of impinging on the top of the strips grit particles from the drip tray, which in turn otherwise resulted in a falsification of the measurement result.

In addition, collecting trays with open cross-section, ie without compartments known. For example, describes the DD 2 13 817 A1 a device for collecting and collecting particulate solids, as they are applied by means of fertilizer spreaders, wherein the collecting device comprises a plurality of collecting vessels with walls made of the flexible, smooth tubing and produced from a tube and approximately funnel-shaped downwardly tapering. In the EP 1 610 112 A1 Finally, it concerns a further device for measuring the spreading material distribution of spreading machines, which comprises a stationary measuring bench for the measurement of the spreading material particles distributed on the ground. The measuring bench has a row-shaped arrangement of substantially funnel-shaped downwardly tapering receiving shells, which is equipped with measuring devices for quantity detection of the distributed particles and comprises a holding device for attachment to the spreader.

The object of the invention is to simplify the testing and measuring device significantly and to improve the transport volume and the assembly of the drip trays.

This object is achieved in a test device of the type mentioned fact that each four adjoining, reflection-reducing walls thereby taper from top to bottom truncated pyramid to a Gefach that the Gefachwände opposite an imaginary horizontal plane at an acute angle truncated pyramid down, and that all compartments are connected to a loose inserted into the opening cross section of the drip tray insert and all inserts are stackable.

In contrast to the prior art, the Gefachwände run opposite an imaginary horizontal plane at an acute angle truncated pyramidal down and are open at the bottom. The loosely insertable in the opening cross section of the trays shells are combined to a complete use, so do not need to be laboriously assembled. All inserts are stackable due to the oblique Gefachwände, so that such a stack occupies only a small height and is easy to transport.

According to one exemplary embodiment, each drip tray has a step on its inside, at a distance from its upper edge, on which the insert sits with its lower edge in the test position, while the space between the step and the bottom of the drip tray is free of internals. As a result, the fertilizer grains can also be poured into the tubes with built-in compartments.

In contrast to the prior art, in which the honeycomb walls are flush with the upper edge of the drip tray, the insert with the truncated pyramidal walls projects beyond the upper edge of the drip tray. The particles reflected by the Gefachwänden go directly into the empty space of the drip tray below the insert.

The collecting trays are also preferably stackable with one another, so that the inserts stacked in each case and the collecting trays stacked in each case can be combined into a single stack. This results in a particularly low overall height of both the stacked drip trays and the inserts, which can be easily accommodated for example in the trunk of a vehicle.

In a preferred embodiment it is provided that the measuring device in a modular manner from one of the number of collecting trays corresponding number of glass tubes with these bottom stopper with a centrally engaging in the glass tube dipstick and the plug receiving base plate by plug connection of the base plates to a unit with up to five and more glass tubes can be assembled.

The structure of the individual glass tube with its associated base plate with plug and dipstick and the plug connection of the base plates to a unit basically allow any number of drip trays on the measuring width. As a rule, up to 5 glass tubes are recommended, for example to arrange the contents of one drip tray in the tramline and in the overlap zone between 2 spreading compartments (half working width), another drip tray in the middle between these two trays and one drip tray in between so that there are a total of 5 drip trays between the tramline and the overlap area and their contents are poured into one of the 5 measuring tubes for level comparison.

The aforementioned measuring device can be easily disassembled and cleaned due to its modular structure.

• 1 eine schematische Draufsicht auf mehrere Auffangschalen beim Anschlussfahren eines Traktors mit aufgesatteltem Zweischeibenstreuer während des Testvorgangs;
• 2 eine Draufsicht auf eine Ausführungsform des Einsatzes;
• 3 eine Seitenansicht des Einsatzes;
• 4 einen Schnitt IV-IV gemäß 2;
• 5 eine teilweise aufgebrochene Seitenansicht einer Auffangschale mit eingesetztem Einsatz;
• 6 eine perspektivische Ansicht eines Stapels von Auffangschalen und Einsätzen; und
• 7 einen Schnitt durch einen Teil eines Bausatzes der Messeinrichtung.

The invention will be described with reference to an embodiment shown in the drawing. In the drawing show:

• 1 a schematic plan view of a plurality of drip trays when connecting a tractor with mounted dual disc spreader during the testing process;
• 2 a plan view of an embodiment of the insert;
• 3 a side view of the insert;
• 4 a cut IV - IV according to 2 ;
• 5 a partially broken side view of a drip tray with inserted insert;
• 6 a perspective view of a stack of trays and inserts; and
• 7 a section through a part of a kit of the measuring device.

To test the spreader and the spreading properties of the fertilizer that is currently being spread, two lanes are spaced apart 1 . 2 in the embodiment shown a total of five drip trays 6 . 7 . 8th . 9 placed on as flat a surface as possible from the tractor 3 with the attached fertilizer spreader 4 on a way there (Fahrgasse 1 ) and on a return journey (Fahrgasse 2 ) are run over. The two-disc spreader produces a triangular-shaped spreading fan 5 that overlap when traveling back and forth and in the area between the tramlines 1 . 2 to produce a linear fertilizer distribution. The linearity of the fertilizer distribution is checked by the test method shown.

As already mentioned, in the exemplary embodiment shown, a total of five collecting trays 6 . 7 . 8th . 9 provided, of which the drip tray 6 in the middle of the tram 1 , the drip tray 7 in the overlapping zone (= half working width "x"), another drip tray 8th in the middle in between ( 1 / 4 Working width) and two additional drip trays 9 in each case in the middle between in the driving lane 1 set up drip tray 6 or the collecting tray set up in the overlapping zone 7 and the drip tray 8th be placed centrally. When going back and forth, the spread fertilizer particles get into the drip trays 6 . 7 . 8th , and 9 , with the in each drip tray 6 . 7 . 8th . 9 collected fertilizer should ideally be the same size. If this is not the case, appropriate adjustments must be made to the fertilizer spreader.

In the drip trays 6 . 7 . 8th . 9 are honeycomb inserts 10 according to 2 to 4 used. Four adjoining, reflection-reducing walls 11 each form a truncated pyramidal downwardly tapering Gefach, with all the compartments in the drip tray 6 . 7 . 8th . 9 openly open.

5 shows a single drip tray 12 that have a level bottom 13 and sloping walls 14 having. Between the upper edge 16 and the floor 13 show the walls 14 an outwardly formed step 15 on top of that use 10 is placed in the fall arrest position. For transport and storage is the use 10 from the drip tray 12 are taken and the drip trays, such as 6 shows, stacked in each other. Likewise, the stakes 10 stacked together, due to the truncated pyramidal sloping walls 11 is possible, so the pile 16 of inserts 10 finally on the upper drip tray 12 of the pile 17 of drip pans 12 can be used. Every single stack of inserts 10 as well as the entire stack of inserts 10 and drip trays 12 , have a low height.

7 shows an embodiment of the measuring device 18 containing one of the number of drip trays 6 to 9 according to 1 corresponding number of glass tubes 19 having. In 7 are for simplicity only two glass tubes 19 shown. In each of the glass tubes 19 The content of the fertilizer collected in a drip tray is poured over one into the glass tube 19 used funnel 20 poured. Every glass tube 19 sits tight on a stopper 21 with a central dipstick 22 , Every stopper 21 sits in its own base plate 23 , wherein the individual base plates via plug connections 24 can be connected to each other. For example, five or more glass tubes can be easily connected together in a modular unit to form a rigid unit, so that for the five drip trays 6 . 7 . 8th . 9 according to 1 an exact level comparison is possible.

In order to avoid measuring errors in the event of uneven terrain on the measuring section, two collecting trays are arranged one after the other in the direction of travel, the contents of which are then poured into a measuring tube.

Claims (7)

Device for checking the transverse distribution of spreading material applied by means of a disc spreader (4), consisting of transverse to the direction of travel at a uniform distance to be set up collecting trays (6, 7, 8, 9, 12) inserted into this, the opening cross section of the collecting trays (6, 7, 8, 9, 12) dividing into compartments walls (11) and a measuring device (18) from juxtaposed glass tubes (19) with upper funnel (20) and scale, wherein the traversed when traversing the collecting trays (6, 7, 8, 9, 12) of each of them collected grit filled in one of the glass tubes and the distribution accuracy over the distribution width Level comparison of the material to be spread in the glass tube is checked, characterized in that each four adjoining, reflection-reducing walls (11) thereby tapering from top to bottom truncated pyramid to a Gefach that the Gefachwände (11) with respect to an imaginary horizontal plane at an acute angle truncated pyramid run down, and that all compartments to a loose in the opening cross section of the up (6, 7, 8, 9, 12) deployable insert (10) are connected and all inserts (10) are stackable. Setup after Claim 1 , characterized in that each collecting tray (6, 7, 8, 9, 12) on the inside at a distance from its upper edge (16) has a step (15) on which the insert (10) is seated with its lower edge in the test position, while the space between the step (15) and the bottom (13) of the drip tray (6, 7, 8, 9, 12) is free of internals. Setup after Claim 1 or 2 , characterized in that the insert (10) with the truncated pyramidal walls (11) projects beyond the upper edge of the collecting tray (6, 7, 8, 8, 12). Furnishing according to one of the Claims 1 to 3 , characterized in that the collecting trays (6, 7, 8, 9, 12) are stackable. Furnishing according to one of the Claims 1 to 4 , characterized in that each of the stacked inserts (10) and each individually stacked collecting trays (6, 7, 8, 9, 12) are summarized into a single stack. Furnishing according to one of the Claims 1 to 5 , characterized in that the measuring device (18) in a modular manner from the number of collecting trays (6, 7, 8, 9, 12) corresponding number of glass tubes (19) with these bottom stopper (21) with a centrally engaging in the glass tube dipstick (19) with attached scale and a plug-receiving base plate (23) by plug connection (24) of the base plates is assembled into a unit with up to five glass tubes. Furnishing according to one of the Claims 1 to 6 , characterized in that the measuring device (18) is easily dismantled for cleaning purposes.

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