EP0835695A2 - Flat screen for agricultural crop in lumps - Google Patents

Flat screen for agricultural crop in lumps Download PDF

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Publication number
EP0835695A2
EP0835695A2 EP97117230A EP97117230A EP0835695A2 EP 0835695 A2 EP0835695 A2 EP 0835695A2 EP 97117230 A EP97117230 A EP 97117230A EP 97117230 A EP97117230 A EP 97117230A EP 0835695 A2 EP0835695 A2 EP 0835695A2
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EP
European Patent Office
Prior art keywords
drive
wheel
sieve
driven
flat screen
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97117230A
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German (de)
French (fr)
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EP0835695A3 (en
EP0835695B1 (en
Inventor
Ingo Mikulla
Kurt Lippmann
Heinz Hempel
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NETAGCO POTATO DIVISION
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Fritz Dohne & Co KG GmbH
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Publication of EP0835695A3 publication Critical patent/EP0835695A3/en
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Publication of EP0835695B1 publication Critical patent/EP0835695B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens

Definitions

  • the invention relates to a flat screen sorter for chunky agricultural Crops for sorting these crops, especially potatoes, Vegetables and fruit.
  • the sieves are in sieve boxes that are guided in handlebars assembled.
  • These sorters have gear technology as the drive form Crank gear or a cam gear. While over a crank gear driven screens due to the low ratio crank length / handlebar length an approximately sinusoidal sieve movement is generated when driving a deviating screen movement possible via a cam mechanism.
  • the invention has for its object a flat screen sorter for gentle movement of the sieve with low sorting errors and high throughput for the flat screen sorting of lumpy agricultural crops, especially of potatoes, vegetables and fruit to develop with the Flat screen sort the mechanical damage to the screened material significantly reduced and sieve errors are reduced and the effective working width related throughput is increased.
  • the object is achieved by a flat screen sorter with a specially designed drive for the screens.
  • the drive takes place and the movement of the screens over crankshafts, each by a drive wire be driven, which as a decentrally mounted on the crankshaft Is executed disc and each via a form-fitting envelope element with a drive wheel arranged decentrally or centrally on a drive shaft and if necessary with another decentralized also on a crankshaft
  • the driven driven wheel is connected and the envelope element is a spring-loaded tensioning wheel assigned.
  • the sieve boxes 2 mounted in the handlebars 3 are articulated with the sieves 1 via the coupling rods 4 to the crankshafts 5.
  • a driven wheel 6 is arranged, which is designed as a decentrally mounted disc.
  • Two driven wheels 6 each are driven by a drive wheel 8 arranged decentrally or centrally on a drive shaft 7 via a form-fitting envelope element 9.
  • a sprung tensioning wheel 10 is arranged in each run between the two driven wheels 6 in order to ensure constant tightening of the form-fitting envelope element 9.
  • the phase position of the two sieve boxes 2 driven by a form-fitting enveloping element 9 can be predetermined as desired, but in the sense of limiting the inertial forces acting on the machine frame have a difference of 60 ... 300 ° and in terms of of the spring travel should be optimized, the decentralized arrangement of the drive wheel 8 on the drive shaft 7, the phase position of the two sieve movements realized by a form-fitting enveloping element 9 is predetermined by the geometry of the enveloping drive.
  • each of the 4 sieve boxes 2 changed from one another, by 60 ... 120 ° or a multiple thereof Has phase. This is the prerequisite for limiting the inertial forces acting on the machine frame and thus ensuring that the machine stands securely on the surface.
  • the drive wheel 8 of the drive shaft 7 and the two driven wheels 6 of the crankshafts 5 are brought into the position in which the least deflection of the spring-loaded tensioning wheel 10 is achieved.
  • the sieve movement Due to the uneven transmission ratio, the sieve movement has an uneven vibration curve, which includes a briefly acting area of intensive sieve accelerations during the upward stroke and a long-lasting area of less intensive sieve accelerations, the so-called rest phase, during the downward stroke.
  • the high positive and negative accelerations make it possible to dissolve the pile and to align the individual tubers above the sorting openings when the inertia of the material to be sorted is used.
  • the pronounced resting phase ensures that the tubers pass quickly through the sorting openings with low impact loads.
  • the tubers In the area of increasing sieve acceleration opposite to the material conveying direction, in which the tuber is detached from the sieve 1, there is a high sieving speed and thus tuber speed, which causes the tuber to "roll on” from one sieving mesh to the next.
  • the tubers are thus transported via the sieve 1 primarily through the sieve kinematics and less through good replenishment. This leads to a short dwell time of the tubers on the sieve 1 and thus to a lower mechanical product stress.
  • the spring restoring force of the tensioning wheel 10 is to be matched to the kinematic requirements, on the one hand to ensure a constant tightening of the enveloping element 9 and thus the transmission of the required torques and on the other hand to limit the peak values with regard to the drive torque and the tensile force in the enveloping element 9. Toothed belts come into consideration as covering elements 9. They run with little wear and maintenance even under dusty conditions, have no permanent expansion and are particularly advantageous due to their low mass.
  • the spring-loaded tensioning wheel 10 prevents overstretching of the enveloping element 9 as a result of manufacturing and assembly inaccuracies.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Harvesting Machines For Root Crops (AREA)

Abstract

The device consists of several vibrating sieves (1), which are arranged in sieves boxes (2) supported on connecting rods (3), and which are connected by coupling rods (4) to crank shafts (5). Each crank shaft has a drive wheel (6) in the form of an eccentric disc. Each drive wheel is driven by a drive wheel (8) positioned centrally or eccentrically on a drive shaft (7), by an envelope member (9). A sprung tensioning wheel (10) is associated with the envelope member.

Description

Die Erfindung betrifft einen Flachsiebsortierer für stückige landwirdschaftliche Erntegüter zur Größensortierung dieser Erntegüter, insbesondere von Kartoffeln, Gemüse und Obst.The invention relates to a flat screen sorter for chunky agricultural Crops for sorting these crops, especially potatoes, Vegetables and fruit.

Bekannt sind Einrichtungen, bei denen eine Größensortierung mittels in der vertikalen Ebene hin und her bewegter Siebe, die horizontal oder geringfügig in Förderrichtung geneigt hintereinander, untereinander oder treppenförmig angeordnet sind, erfolgt. Die Siebe sind in Siebkästen, die in Lenkern geführt sind, montiert. Diese Sortierer weisen als Antriebsform getriebetechnisch ein Kurbelgetriebe oder ein Kurvengetriebe auf. Während über ein Kurbelgetriebe angetriebene Siebe auf Grund des geringen Verhältnisses Kurbellänge/Lenkerlänge eine näherungsweise sinusförmige Siebbewegung erzeugt wird, ist beim Antrieb über ein Kurvengetriebe eine davon abweichende Siebbewegung möglich.Facilities are known in which a size sorting by means of vertical plane reciprocating screens that are horizontal or slightly in Direction of conveyance inclined one behind the other, one below the other or stair-shaped are arranged. The sieves are in sieve boxes that are guided in handlebars assembled. These sorters have gear technology as the drive form Crank gear or a cam gear. While over a crank gear driven screens due to the low ratio crank length / handlebar length an approximately sinusoidal sieve movement is generated when driving a deviating screen movement possible via a cam mechanism.

Nachteile dieser Einrichtungen sind die hohen Gutbeanspruchungen und der auf die wirksame Arbeitsbreite bezogene geringe Durchsatz sowie die hohen Fertigungskosten und die geringe Standzeit des Kurvengetriebes.Disadvantages of these facilities are the high demands on the goods and the effective working width related low throughput as well as the high manufacturing costs and the short service life of the cam mechanism.

Der Erfindung liegt die Aufgabe zugrunde, einen Flachsiebsortierer für eine gutschonende Siebbewegung bei geringem Sortierfehler und hohem Durchsatz für die Flachsiebsortierung von stückigen landwirtschaftlichen Erntegütern, insbesondere von Kartoffeln, Gemüse und Obst zu entwickeln, mit dem beim Flachsiebsortieren die mechanischen Beschädigungen des Siebgutes wesentlich verringert und Siebfehler reduziert werden und der auf die wirksame Arbeitsbreite bezogene Durchsatz erhöht wird.The invention has for its object a flat screen sorter for gentle movement of the sieve with low sorting errors and high throughput for the flat screen sorting of lumpy agricultural crops, especially of potatoes, vegetables and fruit to develop with the Flat screen sort the mechanical damage to the screened material significantly reduced and sieve errors are reduced and the effective working width related throughput is increased.

Gelöst wird die Aufgabe nach den Merkmalen des Patentanspruches.The problem is solved according to the features of the claim.

Die Aufgabe wird erfindungsgemäß durch einen Flachsiebsortierer mit einem besonders ausgestalteten Antrieb für die Siebe realisiert. Dabei erfolgt der Antrieb und die Bewegung der Siebe über Kurbelwellen, welche je von einem Antriebsdraht angetrieben werden, welches als eine auf der Kurbelwelle dezentral gelagerte Scheibe ausgeführt ist und jeweils über ein formschlüssiges Hüllelement mit einem dezentral oder zentral auf einer Antriebswelle angeordneten Antriebsrad und gegebenenfalls mit einem weiteren gleichfalls auf einer Kurbelwelle dezentral gelagerten Abtriebsrad verbunden ist und dem Hüllelement ein gefedertes Spannrad zugeordnet ist.The object is achieved by a flat screen sorter with a specially designed drive for the screens. The drive takes place and the movement of the screens over crankshafts, each by a drive wire be driven, which as a decentrally mounted on the crankshaft Is executed disc and each via a form-fitting envelope element with a drive wheel arranged decentrally or centrally on a drive shaft and if necessary with another decentralized also on a crankshaft The driven driven wheel is connected and the envelope element is a spring-loaded tensioning wheel assigned.

Mit nachfolgendem Ausführungsbeispiel soll die Erfindung näher erläutert werden. In der dazugehörigen Zeichnung ist der Antrieb von vier Siebkästen über dezentral auf den Kurbelwellen angeordneten Antriebsrädern dargestellt.The invention will be explained in more detail with the following exemplary embodiment. In the accompanying drawing, the drive of four sieve boxes is decentralized shown drive wheels arranged on the crankshafts.

Nach der Zeichnung sind die in Lenkern 3 gelagerten Siebkästen 2 mit den Sieben 1 über die Koppelstangen 4 gelenkig mit den Kurbelwellen 5 verbunden. Auf den Kurbelwellen 5 sind je ein Abtriebsrad 6 angeordnet, das als dezentral gelagerte Scheibe ausgeführt ist. Je zwei Abtriebsräder 6 werden von einem auf einer Antriebswelle 7 dezentral oder zentral angeordneten Antriebsrad 8 über ein formschlüssiges Hüllelement 9 angetrieben. Jeweils im Trum zwischen den beiden Abtriebsrädern 6 ist ein gefedertes Spannrad 10 angeordnet, um eine stetige Straffung des formschlüssigen Hüllelementes 9 zu gewährleisten.
Zwischen der Kurbelwelle 5 und dem entsprechenden Abtriebsrad 6 liegt ein bestimmter Verdrehwinkel vor, der von der Anordnung des Hülltriebes sowie von der Drehrichtung und der Schwingungsrichtung des Siebes 1 abhängt. Er ist so zu wählen, daß bei maximaler Winkelgeschwindigkeit der Kurbelwelle 5 die maximale Siebgeschwindigkeit während des Aufwärtshubes in der Mittelstellung des Siebkastens 2 erreicht wird.
Während bei einem zentral auf der Antriebswelle 7 angeordneten Antriebsrad 8 die Phasenlage der beiden durch ein formschlüssiges Hüllelement 9 angetriebenen Siebkästen 2 beliebig vorgebbar ist, aber im Sinne der Begrenzung der auf den Maschinenrahmen wirkenden Massenkräfte eine Differenz von 60...300° haben und hinsichtlich des Federweges optimiert werden sollte, ist bei dezentraler Anordnung des Antriebsrades 8 auf der Antriebswelle 7 die Phasenlage der beiden durch ein formschlüssiges Hüllelement 9 realisierten Siebbewegungen durch die Geometrie des Hülltriebes vorgegeben.
Durch Aufrechterhaltung eines bestimmten Phasenversatzes beider Hülltriebe untereinander, der durch winkelversetzte Anordnung beider Antriebsräder 8 auf der Antriebswelle 7 realisierbar ist, wird gewährleistet, daß jeder der 4 Siebkästen 2 zueinander eine andere, um 60...120° bzw. um ein Mehrfaches davon veränderte Phasenlage hat. Dies ist die Voraussetzung, um die auf den Maschinenrahmen wirkenden Massenkräfte zu begrenzen und somit einen sicheren Stand der Maschine auf der Unterlage zu gewährleisten.
Zum Auflegen des formschlüssigen Hüllelementes 9 werden das Antriebsrad 8 der Antriebswelle 7 und die beiden Abtriebsräder 6 der Kurbelwellen 5 in die Position gebracht, in der die geringste Auslenkung des gefederten Spannrades 10 erreicht wird. Anschließend werden durch Verdrehen der Antriebswelle 7 das zweite Antriebsrad 8 und die beiden übrigen Abtriebsräder 6 des zweiten Hülltriebes in die zum günstigen Auflegen des Hüllelementes 9 zweckmäßige Position gebracht. Zum Abbau der hohen Drehmomentspitzen ist auf der Antriebswelle 7 eine Schwungscheibe anzuordnen.
Der Antrieb eines Siebkastens 2 über je ein formschlüssiges Hüllelement 9, ein Antriebsrad 8 und ein gefedertes Spannrad 10 ist ebenfalls möglich, erfordert aber einen höheren technischen Aufwand. Bei Maschinen mit gerader Anzahl von Siebkästen 2 ist dann die doppelte Anzahl der Hüllelemente 9, Spannräder 10 und Federn notwendig. Deshalb sollte dieser Einzelantrieb auf Sortierer mit nur einem Siebkasten 2 bzw. auf lediglich einen Siebkasten 2 bei Sortierern mit ungerader Anzahl von Siebkästen 2 begrenzt bleiben.
Die Siebbewegung weist auf Grund des ungleichmäßigen Übersetzungsverhältnisses eine ungleichmäßige Schwingkurve auf, die einen kurzzeitig wirkenden Bereich intensiver Siebbeschleunigungen während des Aufwärtshubes und einen langandauernden Bereich wenig intensiver Siebbeschleunigungen, die sog. Ruhephase, während des Abwärtshubes beinhaltet.
Die hohen positiven und negativen Beschleunigungen ermöglichen bei Ausnutzung der Trägheit des Sortiergutes ein Auflösen des Haufwerkes und ein Ausrichten der Einzelknollen über den Sortieröffnungen. According to the drawing, the sieve boxes 2 mounted in the handlebars 3 are articulated with the sieves 1 via the coupling rods 4 to the crankshafts 5. On the crankshafts 5, a driven wheel 6 is arranged, which is designed as a decentrally mounted disc. Two driven wheels 6 each are driven by a drive wheel 8 arranged decentrally or centrally on a drive shaft 7 via a form-fitting envelope element 9. A sprung tensioning wheel 10 is arranged in each run between the two driven wheels 6 in order to ensure constant tightening of the form-fitting envelope element 9.
Between the crankshaft 5 and the corresponding driven wheel 6 there is a certain angle of rotation, which depends on the arrangement of the enveloping drive and on the direction of rotation and the direction of vibration of the screen 1. It should be selected so that at the maximum angular velocity of the crankshaft 5 the maximum sieving speed is reached during the upward stroke in the middle position of the sieve box 2.
While in the case of a drive wheel 8 arranged centrally on the drive shaft 7, the phase position of the two sieve boxes 2 driven by a form-fitting enveloping element 9 can be predetermined as desired, but in the sense of limiting the inertial forces acting on the machine frame have a difference of 60 ... 300 ° and in terms of of the spring travel should be optimized, the decentralized arrangement of the drive wheel 8 on the drive shaft 7, the phase position of the two sieve movements realized by a form-fitting enveloping element 9 is predetermined by the geometry of the enveloping drive.
By maintaining a certain phase offset between the two enveloping drives, which can be realized by angularly offset arrangement of the two drive wheels 8 on the drive shaft 7, it is ensured that each of the 4 sieve boxes 2 changed from one another, by 60 ... 120 ° or a multiple thereof Has phase. This is the prerequisite for limiting the inertial forces acting on the machine frame and thus ensuring that the machine stands securely on the surface.
To place the form-fitting envelope element 9, the drive wheel 8 of the drive shaft 7 and the two driven wheels 6 of the crankshafts 5 are brought into the position in which the least deflection of the spring-loaded tensioning wheel 10 is achieved. Then, by rotating the drive shaft 7, the second drive wheel 8 and the two other driven wheels 6 of the second cladding drive are brought into the position expedient for placing the cladding element 9 favorably. A flywheel is to be arranged on the drive shaft 7 in order to reduce the high torque peaks.
The drive of a sieve box 2 via a form-fitting envelope element 9, a drive wheel 8 and a spring-loaded tension wheel 10 is also possible, but requires a higher technical outlay. In machines with an even number of sieve boxes 2, double the number of enveloping elements 9, tensioning wheels 10 and springs is then necessary. Therefore, this single drive should remain limited to sorters with only one screen box 2 or only to one screen box 2 for sorters with an odd number of screen boxes 2.
Due to the uneven transmission ratio, the sieve movement has an uneven vibration curve, which includes a briefly acting area of intensive sieve accelerations during the upward stroke and a long-lasting area of less intensive sieve accelerations, the so-called rest phase, during the downward stroke.
The high positive and negative accelerations make it possible to dissolve the pile and to align the individual tubers above the sorting openings when the inertia of the material to be sorted is used.

Die ausgeprägte Ruhephase gewährleistet einen zügigen Durchgang der Knollen durch die Sortieröffnungen bei geringer Stoßbelastung.
Im Bereich zunehmender der Gutförderrichtung entgegengesetzter Siebbeschleunigung, in dem das Ablösen der Knolle vom Sieb 1 erfolgt, liegt eine hohe Sieb- und damit Knollengeschwindigkeit vor, die das "Weiterrollen" der Knolle von einer zur nächsten Siebmasche bewirkt. Damit erfolgt der Transport der Knollen über das Sieb 1 vorwiegend durch die Siebkinematik und weniger durch Gutnachschub. Dies führt zu einer geringen Verweilzeit der Knollen auf dem Sieb 1 und damit zu einer geringen mechanischen Produktbeanspruchung.
Bei einem Siebhub von 40 mm, einer Frequenz von 3 Hz und einer Übersetzungsänderung zwischen der Kurbelwelle 5 und der Antriebswelle 7 von imax/imin = 4 werden Beschleunigungsmaxima von ± 20 m/s2 und eine Dauer der Ruhephase mit absoluten Beschleunigungen ≤ 2,5 m/s2 von ca. 140 ms erreicht. Im Ablösebereich sind hohe Siebgeschwindigkeiten zwischen 0,60 und 0,75 m/s vorhanden.
Während bei dezentraler Anordnung des Antriebsrades 8 zur Gewährleistung der Schwingungsform ein gleicher Durchmesser des An- 8 und Abtriebsrades 6 vorliegen muß, ist dies bei zentraler Anordnung des Antriebsrades 8 nicht erforderlich.
Zweckmäßig ist, An- 8 und Abtriebsräder 6 einheitlich mit gleichem Durchmesser und gleicher dezentraler Kegelbohrung zur Übertragung der hohen wechselnden Drehmomente zu gestalten. Die Federrückstellkraft des Spannrades 10 ist auf die kinematischen Erfordernisse abzustimmen, um einerseits eine stetige Straffung des Hüllelementes 9 und damit die Übertragung der geforderten Drehmomente zu gewährleisten und andererseits die Spitzenwerte hinsichtlich des Antriebsdrehmomentes und der Zugkraft im Hüllelement 9 zu begrenzen. Als Hüllelemente 9 kommen Zahnriemen in Frage. Sie laufen verschleiß- und wartungsarm auch unter staubigen Bedingungen, haben keine bleibende Dehnung und sind infolge ihrer geringen Masse besonders vorteilhaft. Durch das gefederte Spannrad 10 wird einer Überdehnung des Hüllelementes 9 infolge von Fertigungs- und Montageungenauigkeiten vorgebeugt.The pronounced resting phase ensures that the tubers pass quickly through the sorting openings with low impact loads.
In the area of increasing sieve acceleration opposite to the material conveying direction, in which the tuber is detached from the sieve 1, there is a high sieving speed and thus tuber speed, which causes the tuber to "roll on" from one sieving mesh to the next. The tubers are thus transported via the sieve 1 primarily through the sieve kinematics and less through good replenishment. This leads to a short dwell time of the tubers on the sieve 1 and thus to a lower mechanical product stress.
With a sieve stroke of 40 mm, a frequency of 3 Hz and a change in ratio between the crankshaft 5 and the drive shaft 7 of i Max / i min = 4 Acceleration maxima of ± 20 m / s 2 and a duration of the rest phase with absolute accelerations ≤ 2.5 m / s 2 of approx. 140 ms are achieved. In the detachment area there are high screening speeds between 0.60 and 0.75 m / s.
While a decentralized arrangement of the drive wheel 8 must ensure the same diameter of the drive 8 and driven wheel 6 to ensure the waveform, this is not necessary if the drive wheel 8 is arranged centrally.
It is expedient to design the input 8 and output gears 6 uniformly with the same diameter and the same decentralized tapered bore for the transmission of the high alternating torques. The spring restoring force of the tensioning wheel 10 is to be matched to the kinematic requirements, on the one hand to ensure a constant tightening of the enveloping element 9 and thus the transmission of the required torques and on the other hand to limit the peak values with regard to the drive torque and the tensile force in the enveloping element 9. Toothed belts come into consideration as covering elements 9. They run with little wear and maintenance even under dusty conditions, have no permanent expansion and are particularly advantageous due to their low mass. The spring-loaded tensioning wheel 10 prevents overstretching of the enveloping element 9 as a result of manufacturing and assembly inaccuracies.

Claims (1)

Flachsiebsortierer für stückige landwirtschaftliche Erntegüter, insbesondere für Kartoffeln, Gemüse und Obst, bestehend aus mehreren in Siebkästen gelagerten und auf Lenkern gestützten schwingbaren Sieben, mit als Kurven- oder Kurbelgetriebe ausgerüsteten Antrieben, dadurch gekennzeichnet, daß die Kurbelwellen (5) der auf Lenkern (3) gestützten Siebkästen (2) von je einem Abtriebsrad (6) angetrieben werden, welches als eine auf der Kurbelwelle (5) dezentral gelagerte Scheibe ausgeführt ist und jeweils über ein formschlüssiges Hüllelement (9) mit einem dezentral oder zentral auf einer Antriebswelle (7) angeordneten Antriebsrad (8) und gegebenenfalls mit einem weiteren gleichfalls auf einer Kurbelwelle (5) dezentral gelagerten Abtriebsrad (6) verbunden und dem Hüllelement (9) ein gefedertes Spannrad (10) zugeordnet ist. Flat screen sorter for chunky agricultural crops, in particular for potatoes, vegetables and fruit, consisting of a plurality of oscillating screens mounted in screen boxes and supported on handlebars, with drives equipped as cam or crank mechanisms, characterized in that the crankshafts (5) of the sieve boxes (2) supported on the handlebars (3) are each driven by an output gear (6), which is designed as a disc mounted on the crankshaft (5) and each with a form-fitting envelope element (9) a drive wheel (8) arranged decentrally or centrally on a drive shaft (7) and optionally connected to a further driven wheel (6) which is also mounted decentrally on a crankshaft (5) and a sprung tensioning wheel (10) is assigned to the enveloping element (9).
EP97117230A 1996-10-08 1997-10-06 Flat screen for agricultural crop in lumps Expired - Lifetime EP0835695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19641449A DE19641449C2 (en) 1996-10-08 1996-10-08 Flat screen sorter for chunky agricultural goods
DE19641449 1996-10-08

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EP0835695A2 true EP0835695A2 (en) 1998-04-15
EP0835695A3 EP0835695A3 (en) 1999-04-21
EP0835695B1 EP0835695B1 (en) 2002-04-17

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CN111468388A (en) * 2020-04-15 2020-07-31 新沂新硕混凝土有限公司 Concrete waste material environmental protection is retrieved screening plant

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Publication number Priority date Publication date Assignee Title
CN104307741A (en) * 2014-10-28 2015-01-28 芜湖赛德交通设备有限公司 Sorting screen
CN104941895B (en) * 2015-07-28 2017-10-10 钦州市奥佳华新能源科技有限公司 One kind sieve material vibrating mechanism
CN106000857A (en) * 2016-06-23 2016-10-12 杨叙宝 Fruit screening machine

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DE2345163B1 (en) * 1973-09-07 1975-01-02 Jabelmann Fa Ludwig Sorting device for potatoes and the like.
GB1380069A (en) * 1971-12-09 1975-01-08 Simpson Co Orville Stop motion screening apparatus and method
DE3208184C1 (en) * 1982-03-06 1983-10-06 Daimler Benz Ag Tensioning device for a sleeve drive, in particular a belt drive
US4699713A (en) * 1986-03-07 1987-10-13 Tieben James B Seed cleaner

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DE735341C (en) * 1935-04-25 1943-05-12 Heinrich Schieferstein Device for generating inharmonic vibrations

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Publication number Priority date Publication date Assignee Title
GB1380069A (en) * 1971-12-09 1975-01-08 Simpson Co Orville Stop motion screening apparatus and method
DE2345163B1 (en) * 1973-09-07 1975-01-02 Jabelmann Fa Ludwig Sorting device for potatoes and the like.
DE3208184C1 (en) * 1982-03-06 1983-10-06 Daimler Benz Ag Tensioning device for a sleeve drive, in particular a belt drive
US4699713A (en) * 1986-03-07 1987-10-13 Tieben James B Seed cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111468388A (en) * 2020-04-15 2020-07-31 新沂新硕混凝土有限公司 Concrete waste material environmental protection is retrieved screening plant

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DE19641449C2 (en) 2002-11-28
EP0835695A3 (en) 1999-04-21
DE19641449A1 (en) 1998-04-09
DE59707028D1 (en) 2002-05-23
EP0835695B1 (en) 2002-04-17

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