GB2070978A - Separating device for potato harvesting machines - Google Patents

Separating device for potato harvesting machines Download PDF

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Publication number
GB2070978A
GB2070978A GB7941169A GB7941169A GB2070978A GB 2070978 A GB2070978 A GB 2070978A GB 7941169 A GB7941169 A GB 7941169A GB 7941169 A GB7941169 A GB 7941169A GB 2070978 A GB2070978 A GB 2070978A
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GB
United Kingdom
Prior art keywords
separating belt
support bar
separating
conveying
stop fingers
Prior art date
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
GB7941169A
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GB2070978B (en
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB2070978A publication Critical patent/GB2070978A/en
Application granted granted Critical
Publication of GB2070978B publication Critical patent/GB2070978B/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D17/00—Digging machines with sieving and conveying mechanisms
    • A01D17/10—Digging machines with sieving and conveying mechanisms with smooth conveyor belts, lath bands or rake bands
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D33/00—Accessories for digging harvesters
    • A01D33/04—Stone-separating mechanisms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D33/00—Accessories for digging harvesters
    • A01D33/08—Special sorting and cleaning mechanisms
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • B07B13/05—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size using material mover cooperating with retainer, deflector or discharger
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/08—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to weight
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/10—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

A separating device for a potato harvesting machine consists of an endless rotating separating belt (3) equipped with resiliently flexible fingers (1) at its surface and a scraper device which is disposed over its conveying strand and sweeps over the whole width of this and which comprises a support bar (9) aligned obliquely to the direction of travel of the separating belt with a movement drive (10) and resilient stop members (11) which extend downwards from the support bar and which extend substantially at right angles to the conveying strand of the separating belt and end above this with constant spacing. The scraper device is movable backwards and forwards in and counter to the conveying direction of the separating belt and reciprocally transversely thereto in a superimposed movement, as a whole, in a plane parallel to the conveying strand of the separating belt. <IMAGE>

Description

SPECIFICATION Separating device for potato harvesting machine The invention relates to a separating device for potato harvesting machines.
In such a separating device known from the DE-AS 19 61 636, the scraper device executes a pivotal movement about an axis parallel to the surface of the conveying strand of the separating belt. Such a pivotal movement exerts, during a considerable part of its movement phase, a reaction on the transported potatoes, urging these into the finger field of the separating belt, which is undesirable for achieving as high a degree of separation as possible.The lateral conveying component of the resilient stop fingers of the scraper device is in direct relationship with the oblique setting of the scraper device with respect to the conveying direction of the separating belt with the result that with only a slight oblique angle, the lateral conveying action is only slight, but the component of movement of the stop fingers effective counter to the conveying direction of the separating belt is great. This leads to accumulations in front of the scraper device, which likewise detract from achieving as high a degree of separation as possible.
With large oblique angles, on the other hand, the length of the scraper device in relation to the width of the separating belt is disproportionately great.
It is the object of the invention to provide a separating device of the kind referred to at the beginning, which avoids potatoes being pushed into the finger field of the separating belt and exerts a powerful lateral conveying, largely independent of the oblique setting of the scraper device, on the potatoes brought up on the conveying strand of the separating belt. At the same time, the separating device should still be extremely simple structurally and economic to manufacture.
The present invention is a separating device for a potato harvesting machine, consisting of an endless rotating separating belt equipped çvith resiliently flexible fingers at its surface and a scraper device which is disposed over its conveying strand and sweeps over the whole width of this and which comprises a support bar aligned obliquely to the direction of travel of the separating belt with a movement drive and resilient stop members which extend downwards from the support bar and which extend substantially at right angles to the conveying strand of the separating belt and end above this with constant spacing, said scraper device being movable backwards and forwards in and counter to the conveying direction of the separating belt and reciprocally transversely thereto in a superimposed movement, as a whole, in a plane parallel to the conveying strand of the separating belt.
In the separating device according to the invention, the resilient stop members remain during their whole movement phase of a movement cycle in their substantially vertical alignment to the conveying strand of the separating belt so that they only exert forces on the potatoes brought up which are directed parallel to the plane of the conveying strand.
The superimposed movement backwards and forwards in and counter to the conveying direction of the separating belt and at the same time reciprocated in the transverse direction thereto renders possible the provision of a powerful transversely directed lateral conveying movement independently of the oblique setting of the scraper device, and the ratio of the conveying distances can be adjustable.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which Figure 1 shows a perspective view, partially broken away, of a separating device according to the invention; Figure 2 shows a side view; and Figure 3 shows a plan view of Fig. 1; Figure 4 and Figure 5 show a side view and plan view similar to Figs. 2 and 3 of second embodiment; and Figure 6 and Figure 7 show a side view and a plan view similar to Figs. 2 and 3 of a third embodiment.
The separating devices illustrated in the drawings consist in detail of an endless rotating separating belt 3 which is equipped at its surface with resiliently flexible fingers 1 and is driven in the direction of the arrow 2 and the plane conveying strand 4 of which is aligned horizontally or is disposed falling slightly obliquely to the side of the observer in Fig. 1.
The separating belt 3 runs round guide and drive rollers or groups of rollers 5, 6, of which the group of rollers 5 is driven through a drive spindle 7 by a drive motor not illustrated.
Disposed over the separating belt 3 is a scraper device designated as a whole by 8 which sweeps over the whole width of the conveying strand 4 of the separating belt 3 and comprises a support bar 9 aligned obliquely to the direction of travel of the separating belt 3 with a movement drive 10 and with resilient stop members 11 extending downwards from the support bar.
The scraper device 8 is movable as a whole in a superimposed movement backwards and forwards in and counter to the conveying direction of the separting belt and in reciprocation transversely thereto in a plane parallel to the conveying strand 4 of the separating belt 3.
In the embodiment shown in Figs. 1 to 3, the end of the support bar 9 remote from the scraped side of the separating belt 3 is connected to an eccentric disc 9a in the eccentric bore of which there engages the pin 1 2 of a crank 1 3 which rotates by means of a bevel gear 1 4 about a vertical pivot pin that is to say aligned normal to the plane of the conveying strand 4 of the separating belt. These parts form the movement drive 1 0. The direction of movement is illustrated by the arrow 1 5 but may extend opposite to this. The end of the support bar 9 remote from the movement drive 10 engages articulately at 1 6 on a link 1 7 which in turn is movably supported for pivoting about a pivot pin 18.The arrow 1 9 illustrates the pivotal oscillating motion of the link 17. The pivot pin 18 of the link 17 extends parallel to the axis of rotation of the crank 1 3. With this construction, the scraper device 8 executes a superimposed movement which near the movement drive 10 has a comparatively powerful component of movement in and counter to the conveying direction of the separating belt 3. This component of movement decreases in the direction towards the other end of the support bar 9, while the scraping component of movement of the superimposed movement extending transversely to the conveying direction of the separating belt 3 retains a uniform magnitude.
The decrease in the component of movement in and counter to the conveying direction of the separating belt 3 can be varied by varying the effective iength of the link 1 7. The embodiment in Figs. 4 and 5 differs from that in Figs. 1 to 3 only by the supporting of the end of the support bar 9 of the scraper device 8 adjacent to the scraped side of the separating belt 3.
This end carries a guide rod 20 which is guided with a supporting arm 21 bent at an angle in the horizontal plane counter to the conveying direction 2 of the separating belt by two profile rollers 22, 23, forming a guide gap, for displacement in the direction of the arrow 24. This supporting arm 21 extends substantially at right angles to the conveying direction 2 of the separating belt 3 with the result that with a constant component of movement of the support bar 9 transversely to the conveying direction 2 of the separating belt 3 the component of movement extending in this conveying direction 2 drops from its maximum value at the left-hand end in Figs. 4 and 5 to a very low value at the outlet end of the scraper device.A variation in the decrease in the component of movement effective in the conveying direction 2 of the separating belt 3 can likewise be achieved within limits by varying the angle between the longitudinal centre axis of the support bar 9 and that of the supporting arm 21.
In the embodiment shown in Figs. 6 and 7, two like movement drives 10 are provided at both ends of the scraper device 8. A chain drive 25 or the like ensures a synchronous rotation of the two cranks 1 3 of the movement drives 10. With this embodiment, with like eccentricity of the eccentric bores or with like cranks 13, all points of the scraper device 8 execute like superimposed movements.
The movement drives and supports or guides of the scraper devices 8 in the form described above are particularly simple and economical. It is, however, also possible to support the support bar 9 at its non-driven end by a vibration damping spring or the like or to mount both ends in vibration damping springs in which case the movement drive can act on the support bar 9 centrally, for example from above.
Provided as resilient stop members are individual stop fingers 11 which are disposed parallel side by side with spacing along the support bar and extend downwards from this and which comprise transverse steps 26 extending over their height and bridging the gaps between adjacent stop fingers 11. These transverse straps 26 overlap with their vertical outer edges the adjacent stop fingers at their side adjacent to the conveying direction 2 of the separating belt and furthermore bear against this. As a result, the stop fingers 11 to some extent form a closed curtain which counteracts the clinging of weeds and makes it unnecessary to provide a separate weed stripper.Each transverse strap 26 forms with the adjacent part of its stop finger 11 an annular pocket 28 which is bounded on two sides and open towards the scraped side of the separating belt 3 counter to its conveying direction 2, and which considerabiy increases the scraping action on potatoes which are brought up on the conveying strand 4 of the separating belt 3. The to some extent sawtooth-like apron which the stop members 11 form, exerts a powerful entrainment function on the potatoes. Fundamentally, the scraper fingers 11 may have a circular crosssection in which case the transverse straps extend sideways substantially tangentially. A preferred embodiment provides, however, that the stop fingers together with their transverse straps are bounded in horizontal cross-section by outside surfaces which are at right angles to one another, as Figs. 3, 5 and 7 show.
To support the stop fingers 11, rigid supporting pins 27 are provided at the under side of the support bar 9, over which resilient shaped members of rubber or the like forming the stop fingers 11 are inverted, the supporting pins only taking up about 2/3rds of the height of the stop fingers. Accordingly, the stop fingers 11, in their upper region, form a to some extent rigid merely cushioned wall, while in their lower region projecting beyond the supporting pins 27 they offer a resiliently flexible apron. The right-angled cross-sectional form of the supporting pins 27 illustrated ensures a location of the stop fingers 11 on the supporting pins, secured against torsion.

Claims (11)

1. A separating device for a potato har vesting machine, consisting of an endless rotating separating belt equipped with resiliently flexible fingers at its surface and a scraper device which is disposed over its conveying strand and sweeps over the whole width of this and which comprises a support bar aligned obliquely to the direction of travel of the separating belt with a movement drive and resilient stop members which extend downwards from the support bar and which extend substantially at right angles to the conveying strand of the separating belt and end above this with constant spacing, said scraper device being movable backwards and forwards in and counter to the conveying direction of the separating belt and reciprocally transversely thereto in a superimposed movement, as a whole, in a plane parallel to the conveying strand of the separating belt.
2. A device as claimed in claim 1, in which the support bar is provided with an eccentric drive at one end.
3. A device as claimed in claim 2, in which the support bar acts, at its end remote from the eccentric drive, articulately on a link which is mounted for pivoting about a pivot pin parallel to the axis of rotation of the eccentric drive.
4. A device as claimed in claim 2, in which the support bar carries, at its end remote from the eccentric drive, a guide rod which is guided for displacement with a supporting arm bent in a horizontal plane at an angle to the direction of conveying of the separating belt by two profile rollers forming a guide gap.
5. A device as claimed in claim 2, in which the support bar is provided with an eccentric drive at each end and a synchronous drive is provided for both.
6. A device as claimed in any of claims 1 to 5, with individual resilient stop fingers extending downwards parallel beside one another with spacing and disposed along the support bar, the stop fingers comprising transverse straps extending over their height and bridging the gaps between adjacent stop fingers.
7. A device as claimed in claim 6, in which the transverse straps overlap the adjacent stop fingers with their vertical outer edges, at the side adjacent to the conveying direction of the separating belt and bear against these.
8. A device as claimed in claim 6 or claim 7, in which each transverse strap with the adjacent part of its stop finger bounds at two sides an angular pocket which is open counter to the conveying direction of the separating belt and towards its scraper side.
9. A device as claimed in any of claims 6 to 8, in which the stop fingers together with their transverse straps are bounded in the horizontal cross section by outside surfaces at right angles to one another.
1 0. A device as claimed in any preceding claim, in which provided at the under side of the support bar are rigid supporting pins over which resilient shaped members of rubber or the like forming the stop fingers are Inverted, the supporting pins taking up about two thirds of the height of the stop fingers.
11. A separating device for a potato harvesting machine, substantially as hereinbefore described with reference to, and as shown in.
the accompanying drawings.
GB7941169A 1978-11-03 1979-11-29 Separating device for potato harvesting machines Expired GB2070978B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782847698 DE2847698C3 (en) 1978-11-03 1978-11-03 Device on potato harvesting machines for separating potatoes from stones

Publications (2)

Publication Number Publication Date
GB2070978A true GB2070978A (en) 1981-09-16
GB2070978B GB2070978B (en) 1983-01-19

Family

ID=6053769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7941169A Expired GB2070978B (en) 1978-11-03 1979-11-29 Separating device for potato harvesting machines

Country Status (6)

Country Link
AT (1) AT383005B (en)
CH (1) CH643108A5 (en)
DE (1) DE2847698C3 (en)
FR (1) FR2470522B1 (en)
GB (1) GB2070978B (en)
SE (1) SE417675B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123825A2 (en) * 1983-04-22 1984-11-07 Maschinenfabrik Bezner GmbH & Co. KG Sorting plant for extracting valuable products from household refuse, industrial refuse, bulky refuse, dry refuse, and/or difficult and dangerous matter
EP0154599A1 (en) * 1984-03-01 1985-09-11 Maschinenfabrik Bezner GmbH & Co. KG Sorting plant for extracting valuable products from household refuse, industrial refuse, bulky refuse, dry refuse, and for problematic and dangerous material
ES2112117A1 (en) * 1994-03-28 1998-03-16 Ikerlan S Coop Apparatus for separating out lumps of earth in a potato digger

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO162361B (en) * 1987-08-20 1989-09-11 Underhaug As POTTOP RECEIVER SAVING DEVICE.
GB9723512D0 (en) * 1997-11-07 1998-01-07 Reekie Manufacturing Agricultural machinery incorporating improved elevator system
CN106824795B (en) * 2016-12-30 2020-10-13 无为县年香马蹄种植专业合作社 Water chestnut sorting machine
RU208434U1 (en) * 2021-05-04 2021-12-17 Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный агротехнологический университет имени П.А. Костычева" (ФГБОУ ВО РГАТУ) SEPARATING DEVICE FOR ROOT CUTTING MACHINE
BE1031090B1 (en) * 2022-11-30 2024-06-24 Grimme Landmaschinenfabrik Gmbh & Co Kg Root crop separator and root crop harvester

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB735720A (en) * 1952-09-11 1955-08-24 Ransomes Sims & Jefferies Ltd Improvements in or relating to root crop harvesters
DK119233B (en) * 1968-12-10 1970-11-30 Norlyk H & Sonner As Sorting apparatus, preferably for sorting stones from potatoes.
DE2024954A1 (en) * 1970-05-22 1971-12-09 Franz Grimme Landmaschinenfabrik, 2845 Damme Separating unit for potato harvesters
GB1431905A (en) * 1972-04-19 1976-04-14 Nat Res Dev Separating apparatus
DE2446711C3 (en) * 1974-09-30 1981-02-05 Gummi-Jaeger Kg Gmbh & Cie, 3000 Hannover Device on potato harvesting machines for separating potatoes and stones

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123825A2 (en) * 1983-04-22 1984-11-07 Maschinenfabrik Bezner GmbH & Co. KG Sorting plant for extracting valuable products from household refuse, industrial refuse, bulky refuse, dry refuse, and/or difficult and dangerous matter
EP0123825A3 (en) * 1983-04-22 1985-10-09 Maschinenfabrik Bezner Gmbh & Co. Kg Sorting plant for extracting valuable products from household refuse, industrial refuse, bulky refuse, dry refuse, and/or difficult and dangerous matter
EP0154599A1 (en) * 1984-03-01 1985-09-11 Maschinenfabrik Bezner GmbH & Co. KG Sorting plant for extracting valuable products from household refuse, industrial refuse, bulky refuse, dry refuse, and for problematic and dangerous material
WO1985003890A1 (en) * 1984-03-01 1985-09-12 Maschinenfabrik Bezner Gmbh & Co. Kg Sorting plant particularly for recovering valuable materials from refuse
US4760925A (en) * 1984-03-01 1988-08-02 Maschinenfabrik Bezner Gmbh & Co. Kg Refuse sorting apparatus
ES2112117A1 (en) * 1994-03-28 1998-03-16 Ikerlan S Coop Apparatus for separating out lumps of earth in a potato digger

Also Published As

Publication number Publication date
SE417675B (en) 1981-04-06
CH643108A5 (en) 1984-05-30
AT383005B (en) 1987-05-11
DE2847698B2 (en) 1980-08-21
ATA739179A (en) 1986-10-15
FR2470522A1 (en) 1981-06-12
DE2847698C3 (en) 1981-03-12
FR2470522B1 (en) 1985-11-15
DE2847698A1 (en) 1980-05-08
GB2070978B (en) 1983-01-19

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921129