EP2856853A1 - Vorrichtung zum Speichern von Wurzelfrüchten - Google Patents

Vorrichtung zum Speichern von Wurzelfrüchten Download PDF

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Publication number
EP2856853A1
EP2856853A1 EP14003328.3A EP14003328A EP2856853A1 EP 2856853 A1 EP2856853 A1 EP 2856853A1 EP 14003328 A EP14003328 A EP 14003328A EP 2856853 A1 EP2856853 A1 EP 2856853A1
Authority
EP
European Patent Office
Prior art keywords
frame
sub
roller
module
roller module
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
EP14003328.3A
Other languages
English (en)
French (fr)
Other versions
EP2856853B1 (de
Inventor
Nikele Brandsma
Anne-Marten Hiddema
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dewulf Bv
Original Assignee
MIEDEMA LANDBOUWWERKTUIGEN
Miedema Landbouwwerktuigenfabriek BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=50239866&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2856853(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MIEDEMA LANDBOUWWERKTUIGEN, Miedema Landbouwwerktuigenfabriek BV filed Critical MIEDEMA LANDBOUWWERKTUIGEN
Publication of EP2856853A1 publication Critical patent/EP2856853A1/de
Application granted granted Critical
Publication of EP2856853B1 publication Critical patent/EP2856853B1/de
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4636—Regulation of screen apertures

Definitions

  • the present invention relates to a device for barn-storing root crops.
  • the device comprises a main frame with a filling bunker with a movable bottom, a first and second roller module with an adjustable distance between the central axes of adjacent rollers and respective first and second transverse discharge conveyors co-acting therewith, and an end discharge conveyor.
  • the device is intended for the purpose of receiving a load of root crops, and in particular freshly harvested root crops, and separating and delivering different fractions, including soil tare and undersize root crops, in a continuous process.
  • the first roller module situated behind the mouth of the filling bunker is intended for the purpose of cleaning the harvested product.
  • This processing step has the purpose of separating soil tare such as crumbs and balls of soil, stalks, stones and the like from the main product flow.
  • Known roller modules are equipped for this purpose with driven smooth or spiral-shaped rollers oriented at right angles to the product flow direction or rollers having elements of star shape and shapes derived therefrom.
  • a first transverse discharge conveyor situated at right angles to the product flow direction under the first roller module.
  • the guiding particularly of moist soil crumbs from the first roller module to the first transverse discharge conveyor is a critical part of the process. Moist soil has a strong tendency to stick to static machine parts through adhesion. Soil can then accumulate thereon as a result of cohesion, with possible clogging and blocking of machine parts as a result. An important design requirement therefore is that the contact between loose soil and static machine parts has to be avoided as far as possible. For this reason the choice is made in known devices to adapt the effective width of the first transverse discharge conveyor to the maximum width of the first roller module, i.e. for the situation wherein the set distance between adjacent rollers is maximal.
  • the first roller module and the first transverse discharge conveyor co-act such that, when the first roller module narrows, a part of the first transverse discharge conveyor, as seen from the side of the device, slides under the mouth of the filling bunker.
  • the first roller module guides the main product flow onto an adjacent second roller module.
  • This second roller module can also be intended for cleaning of the harvested root crops, although applied more often is an embodiment wherein the second roller module is intended for the purpose of sorting the harvested product.
  • the rollers oriented at right angles to the product flow direction can for this purpose be provided with constrictions to allow passage of undersize tubers or bulbs.
  • An example of such a device is described in NL8602843 .
  • the second roller module often co-acts here with a second transverse discharge conveyor for lateral discharge of the separated fraction.
  • the second transverse discharge conveyor is often similar here to the first discharge conveyor.
  • the second roller module and the second conveyor belt co-act such that, when the second roller module narrows, the second transverse discharge conveyor will, due to the reduction of the distance between the central axes of adjacent rollers, slide into the space between the first roller module and the first conveyor belt, as seen from the side of the device.
  • a first drawback of these known devices is that soil accumulates easily on static parts of the second conveyor belt in a situation where the second transverse discharge conveyor is situated partially in the open space between the first roller module and the first transverse discharge conveyor.
  • a second drawback of the known devices referred to here is that a part of what drops through the first roller module unintentionally falls onto the second transverse discharge conveyor in the said situation wherein the second transverse discharge conveyor is situated partially between the first roller module and the first transverse discharge conveyor.
  • a third drawback is that the main product flow must always pass over the second roller module, even in situations where the second roller module adds nothing to the process and only costs energy, generates wear and increases the chance of damage, for instance due to abrasion of the harvested product.
  • a fourth drawback is that the first and the second transverse discharge conveyor are situated so closely to each other that in practical situations both conveyor belts must discharge their product in opposite directions, for which purpose space must be created on both sides of the device. The space available is often scarce in practical situations.
  • a device of the above specified type according to the invention is for this purpose characterized in that between the first and the second roller module a space is present in which a transport module is situated for receiving the root crops from the first roller module and delivering thereof to the second roller module.
  • the space spanned by the transport module amounts to a minimum of 0.2 m. Sufficient space is hereby created to receive the second transverse discharge conveyor without it extending to below the first roller module. This effectively prevents whatever drops through the first roller module from falling onto the second transverse discharge conveyor.
  • the transport module according to the present invention has an endless, substantially smooth closed conveyor belt with a drive having an independent continuously variable drive speed.
  • the independent continuously variable drive speed results in the particular advantage that the possibility is hereby created of singulating the root crops. This enhances the sorting effect of the second roller module.
  • the device according to the invention also comprises a first sub-frame in which the first transverse discharge conveyor and the transport module are held.
  • the first sub-frame is connected here for displacement in the longitudinal direction to the main frame and is further coupled with first coupling means to the first roller module such that an adjustment of the distance between the central axes of adjacent rollers of the first roller module results in a displacement of the first sub-frame in a measure which is substantially equal to the sum of the changes in the distances between the respective adjacent rollers.
  • the device further comprises a second sub-frame in which the second transverse discharge conveyor and the end discharge conveyor are held.
  • the second sub-frame is connected here for displacement in the longitudinal direction to the main frame and is coupled with second coupling means to the second roller module such that an adjustment of the distance between the central axes of adjacent rollers of the second roller module results in a displacement of the second sub-frame in a measure which is substantially equal to the sum of the changes in the distances between the respective adjacent rollers.
  • the device is further characterized in that the second roller module couples the first sub-frame to the second sub-frame by means of respective second and third coupling means such that a displacement of the first sub-frame results in a substantially equal displacement of the second sub-frame.
  • the transport module extends here over a part of the second transverse discharge conveyor at a setting wherein the distance between adjacent rollers of the second roller module is minimal.
  • the transport module is held by the first sub-frame for rotation about a shaft and co-acts here with the second transverse discharge conveyor such that in the operational mode the flow with root crops is guided by the transport module onto the second transverse discharge conveyor.
  • a bypass is thus realized in simple and effective manner for the purpose of avoiding the second roller module.
  • first and second transverse discharge conveyors are situated adjacently of each other instead of partially above each other, the option is created of discharging both separated fractions in the same direction using the transverse discharge conveyors.
  • transverse discharge conveyors use is preferably made here of drives with an adjustable drive direction so that the discharge direction can be adapted to the space available around the device in the operational mode.
  • Figure 1 herein shows a detailed perspective view of the device according to the invention.
  • Known accessories such as a feed reel and a roller cleaner, are omitted for the sake of clarity.
  • Figure 2 shows a highly simplified schematic side view of the characterizing aspects of the device. A more detailed elaboration of the device according to the invention is dispensed with since it adds nothing to the essence of the present invention but serves only by way of example of well-known technical measures.
  • Figure 1 herein shows a perspective view of device 1 for storing root crops according to the invention.
  • Device 1 is provided with a main frame 2 with a chassis 3 and with a filling bunker 4 for receiving in buffer supply a load of root crops from for instance a tipper truck and gradually delivering this buffer supply via the mouth to a so-called cleaning unit 5.
  • Filling bunker 4 is embodied for this purpose with a movable bottom 6, for instance in the form of an endless belt.
  • Cleaning unit 5 consists of at least a first and a second roller module 7, 8.
  • Roller modules 7, 8 are similar to known roller modules which consist of a plurality of hydraulically or electrically driven smooth, spiral-shaped or otherwise profiled rollers which are oriented at right angles to the longitudinal axis or main flow direction and the shafts of which are received bearing-mounted at both outer ends in multiple scissor constructions.
  • Known roller modules are provided for this purpose with a central adjusting device.
  • the first and the second roller module 7, 8 are preferably applied respectively for separating soil tare such as soil, stalks and stones and for sorting undersize root crops from the main product flow.
  • the fractions separated by the first and second roller modules 7, 8 are discharged laterally by means of respectively a first and a second transverse discharge conveyor 9, 10.
  • the main product flow is discharged in lateral or longitudinal direction by an end discharge conveyor 11, not further specified here.
  • Transport module 12 takes up the main product flow from first roller module 7 and delivers it to second roller module 8.
  • Transport module 12 preferably comprises an endless, substantially smooth and closed conveyor belt and a drive with a continuously variable drive speed.
  • the space spanned by transport module 12, as measured between the final roller of first roller module 7 and the first roller of second roller module 8, measures a minimum of 0.2 m.
  • Figure 2a shows a schematic side view of a part of filling bunker 4 with movable bottom 6 and main frame 2 with chassis 3.
  • a first and second sub-frame 13, 14 are connected to main frame 2 for displacement in the longitudinal direction, i.e. in the direction of the main product flow.
  • First sub-frame 13 comprises the first transverse discharge conveyor 9 and transport module 12.
  • the final roller 15, as seen in the direction of the main product flow, is coupled with first coupling means 16 for rotation about a shaft to first sub-frame 13.
  • the shaft of final roller 15 of first roller module 7 or the shaft of first roller 17 of transport module 12 can for instance serve here as rotation shaft.
  • coupling means 16 are preferably attached fixedly to the scissor of final roller 15.
  • First roller 18 of the first roller module is coupled with fourth coupling means 19 for rotation about a shaft to filling bunker 4 close to the mouth.
  • Available under movable bottom 6, at the mouth of filling bunker 4, is a space for receiving a part of the first transverse discharge conveyor 9.
  • a part of the transverse discharge conveyor 9 is situated in the space under the mouth of movable bottom 6.
  • Figure 2b shows an operational mode in which the set distance between the adjacent rollers of first roller module 7 is maximal. In this situation the extended first roller module 7 has displaced the sub-frame 13 coupled thereto with first coupling means 16 to the rear in the direction of the main product flow.
  • the first transverse discharge conveyor 9 is situated here substantially wholly beneath first roller module 7.
  • Second sub-frame 14 comprises the second transverse discharge conveyor 10 and end discharge conveyor 11.
  • Second roller module 8 here connects first sub-frame 13 to second sub-frame 14 by means of second and third coupling means 20, 21 in a manner similar to that in which first sub-frame 13 is coupled to filling bunker 4 by first roller module 7 and the first and fourth coupling means 16, 19.
  • Second roller module 8 here connects first sub-frame 13 to second sub-frame 14 by means of second and third coupling means 20, 21 in a manner similar to that in which first sub-frame 13 is coupled to filling bunker 4 by first roller module 7 and the first and fourth coupling means 16, 19.
  • transport module 12 is equipped with drive means with a variable drive speed independent of other drives, the option is created of pulling apart the product flow at the transition from first roller module 7 to transport module 12, whereby root crops initially joined together are singulated. This enhances the effectiveness of second roller module 8.
  • Figure 2d shows an operational mode wherein transport module 12 delivers the root crops onto the second transverse discharge conveyor 10.
  • transport module 12 is for this purpose mounted for rotation about a shaft on first sub-frame 13.
  • the second roller module 8 is uncoupled from first sub-frame 13 and rotated upward via the rotation shaft of coupling means 21. The thus realized bypass of second roller module 8 is a useful operational mode for sparing the root crops and second roller module 8 in situations where separation of undersize product is not desired.

Landscapes

  • Sorting Of Articles (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
EP14003328.3A 2013-10-04 2014-09-26 Vorrichtung zum Speichern von Wurzelfrüchten Revoked EP2856853B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1040457A NL1040457C2 (nl) 2013-10-04 2013-10-04 Inrichting voor het inschuren van rooivruchten.

Publications (2)

Publication Number Publication Date
EP2856853A1 true EP2856853A1 (de) 2015-04-08
EP2856853B1 EP2856853B1 (de) 2016-11-09

Family

ID=50239866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14003328.3A Revoked EP2856853B1 (de) 2013-10-04 2014-09-26 Vorrichtung zum Speichern von Wurzelfrüchten

Country Status (2)

Country Link
EP (1) EP2856853B1 (de)
NL (1) NL1040457C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104394A1 (de) 2017-03-02 2018-09-06 Outotec (Finland) Oy Vorrichtung und Verfahren zur Beschickung eines Stetigförderers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370539A (en) * 1943-06-21 1945-02-27 Hodecker Fred Grader or sizer
GB960014A (en) * 1961-10-06 1964-06-10 Ernest Newell & Company Ltd Improvements in or relating to grading machines
NL8602843A (nl) 1986-11-10 1988-06-01 Miedema Landbouwwerktuigen Inrichting voor het naar grootte sorteren van bol- en knolgewassen.
NL9100377A (nl) * 1991-02-28 1992-09-16 Zijlstra & Bolhuis Bv Stortbunkerinrichting voor agrarische produkten.
US5425459A (en) * 1993-08-06 1995-06-20 Ellis; Malcolm P. Stone separation table for potatoes and other root crops

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100044283A1 (en) 2008-08-21 2010-02-25 Danny Mitchell Agricultural Product Conveyor and Sorting System
US8499938B2 (en) 2008-10-17 2013-08-06 Bruce David Nyborg Cleaning and separation system for tubers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370539A (en) * 1943-06-21 1945-02-27 Hodecker Fred Grader or sizer
GB960014A (en) * 1961-10-06 1964-06-10 Ernest Newell & Company Ltd Improvements in or relating to grading machines
NL8602843A (nl) 1986-11-10 1988-06-01 Miedema Landbouwwerktuigen Inrichting voor het naar grootte sorteren van bol- en knolgewassen.
NL9100377A (nl) * 1991-02-28 1992-09-16 Zijlstra & Bolhuis Bv Stortbunkerinrichting voor agrarische produkten.
US5425459A (en) * 1993-08-06 1995-06-20 Ellis; Malcolm P. Stone separation table for potatoes and other root crops

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104394A1 (de) 2017-03-02 2018-09-06 Outotec (Finland) Oy Vorrichtung und Verfahren zur Beschickung eines Stetigförderers

Also Published As

Publication number Publication date
EP2856853B1 (de) 2016-11-09
NL1040457C2 (nl) 2015-04-09

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