GB2312144A - Apparatus for conveying crops - Google Patents
Apparatus for conveying crops Download PDFInfo
- Publication number
- GB2312144A GB2312144A GB9707916A GB9707916A GB2312144A GB 2312144 A GB2312144 A GB 2312144A GB 9707916 A GB9707916 A GB 9707916A GB 9707916 A GB9707916 A GB 9707916A GB 2312144 A GB2312144 A GB 2312144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conveying mechanism
- crop
- conveying
- crops
- entry point
- 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
Links
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
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D17/00—Digging machines with sieving and conveying mechanisms
- A01D17/06—Digging machines with sieving and conveying mechanisms with rollers or disc screens
-
- 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
-
- 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
- B07B1/145—Roller screens the material to be screened moving along the axis of the parallel elements
-
- 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
- B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
- B07B1/155—Roller screens using corrugated, grooved or ribbed rollers the rollers having a star shaped cross section
-
- 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
- B07B13/07—Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement
- B07B13/072—Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement the openings being rollers with a divergent axis and the material moving substantially along the rollers axis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvesting Machines For Root Crops (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
Abstract
Apparatus for conveying crops (1) includes a crop entry point (2), a first conveying mechanism (5) which is located adjacent the crop entry point (2) and a second conveying mechanism (11) is movably mounted with respect to the crop entry point (2) and the first conveying mechanism (5). The second conveying mechanism (11) is movable between a first position in which crops flow from the crop entry point (2) onto the first conveying mechanism (5) and a second position in which the second conveying mechanism (11) intercepts the crops from the crop entry point (2) so that the crops flow from the crop entry point (2) onto the second conveying mechanism (11).
Description
APPARATUS FOR CONVEYING CROPS
The invention relates to apparatus for conveying crops and in particular, apparatus for diverting a flow of crops from one conveying mechanism to another conveying mechanism.
After ground crops, for example potatoes, are removed from the ground using harvesting machines, it is common to feed the crop onto a conveyor mechanism which removes extraneous matter, such as stones, earth and vegetable matter (other than the crop) from the crop itself.
A number of conventional systems are available for removing the extraneous matter. For example, such as counter rotating rollers which convey the crop in a direction substantially parallel to the longitudinal axes of the rollers while at the same time drawing extraneous matter out of the crop and through the rollers. Other examples of conveying mechanisms which can be used for cleaning crops are an array of rubber star wheels or finger wheels which convey the crop in a direction substantially perpendicular to the longitudinal axis of the star wheels. Another example of a conveyor mechanism which may be used is a pintle belt which is essentially a conveyor belt with protruding rubber spikes or pintles which conveys the crop on the rubber spikes from one end of the conveyor to the other. Small stones and clods fall between the pintles, and this then allows the potatoes and small stones/clods to be separately discharged usually by use of a roller rotating against the discharge end of the pintle belt.
At present harvesting machines or crop cleaning machines, are provided with one conveying mechanism and if it is desired to use another conveying mechanism to clean the crop or if it is not wished to clean the crop, for example because of the particular crop or specific ground conditions, it is necessary to completely remove the existing conveying mechanism from the harvesting machine and replace it with another complete mechanism, or to use a different harvesting machine.
In accordance with the present invention, apparatus for conveying crops comprises a crop entry point, a first conveying mechanism located adjacent the crop entry point, and a second conveying mechanism movably mounted with respect to the crop entry point and the first conveying mechanism, the second conveying mechanism being moveable between a first position in which crops flow from the crop entry point onto the first conveying mechanism, and a second position in which the second conveying mechanism intercepts the crops from the crop entry point so that the crops flow from the crop entry point onto the second conveying mechanism.
An advantage of the invention is that the apparatus permits a crop flow to be diverted from a first conveying mechanism to a second conveying mechanism, or alternatively, from the second conveying mechanism to the first conveying mechanism if one or other of the conveying mechanisms are not suitable for processing the crop, for example because of the type of crop and/or because of particular ground conditions.
Preferably, the crop is a ground crop.
The term "ground crop" when used herein denotes any crop which grows in the ground such as tubers, roots or bulbs. Examples of such crops are potatoes, carrots, parsnips, turnips, swedes, sweet potatoes, onions, bulbs and any other similar crops.
Preferably, the first and/or second conveying mechanism may act as a separator and/or cleaning device to separate different sections of the crop and/or to separate extraneous matter from the crop.
Preferably, the first conveying mechanism may be an array of counter rotating rollers, which convey the crop in a direction substantially parallel to the longitudinal axes of the rollers. Alternatively, the first conveying mechanism may be any other suitable conveying mechanism, such as a slatted conveyor belt, a rubber pintle belt or an array of star or finger wheels which convey the crop in a direction substantially perpendicular to the rotational axis of the wheels.
Typically, the second conveying mechanism is different from the first conveying mechanism, and may be star wheels, a pintle belt or a conveyor belt.
Preferably, the direction of movement of the second conveying mechanism is reversible and moves in one direction when in the first position and moves in the opposite direction when in the second position.
The second conveying mechanism may be manually moveable between the first and second positions. Alternatively, movement of the second conveying mechanism between the first and second positions may be controlled remotely via a hydraulic system or an electric system.
Typically, the second conveying mechanism is located above the first conveying mechanism in use and the feed device feeds the crop flow from above the first conveying mechanism such that when the second conveying mechanism is in the second position, the second conveying mechanism is located between the first conveying mechanism and the feed device to intercept the crop flow from the feed device so that the crop flow passes onto the second conveying mechanism.
Preferably, the second conveying mechanism is moveable from the first to the second position in a plane which is substantially parallel to the flow of crop on the second conveying mechanism and typically, this is substantially parallel to a flow of crop on the first conveying mechanism.
Preferably, the second conveying mechanism is also moveable to an intermediate position between the first and second positions. This has the advantage that the crop may be filtered so that a larger crop flows onto the second conveying mechanism and a smaller crop flows onto the first conveying mechanism.
Typically, where the second conveying mechanism is located above the first conveying mechanism, the underside of the second conveying mechanism may be used to retain the crop substantially in contact with the first conveying mechanism when the second conveying mechanism is in either position.
Preferably, the second conveying mechanism, when located above the first conveying mechanism, has a height adjustment mechanism to permit the height of the second conveying mechanism above the first conveying mechanism to be varied depending on the size, type or condition of the crop and to bring the underside of the second conveying mechanism in to contact with the crop on the first conveying mechanism when the second conveying mechanism is in the first position to help maintain the crop in contact with the first conveying mechanism. The height adjustment mechanism can also be used to maintain the second conveying mechanism in contact with any crop on the first conveying mechanism, to assist movement of a smaller crop which has been separated through the second conveying mechanism on to the first conveying mechanism.
Preferably, the angle of the first and/or second conveying mechanism to the horizontal may be varied so that the plane in which the ground crop is conveyed along the first or second conveying mechanism is adjustable. Typically, the plane of conveying of the ground crop along the first and/or second conveying mechanism may be adjusted relative to the horizontal.
This may be plus or minus ten degrees.
Preferably, where the first or the second conveying mechanism comprises counter rotating rollers, alternate rollers may have a formation thereon to promote movement of the crop in a direction along the longitudinal axes of the rollers, as the rollers rotate.
Examples of apparatus for conveying crops in accordance with the invention will now be described with reference to the accompanying drawings, in which:
Fig. 1 is a side view of a first example of a crop
diverter system in a first position;
Fig. 2 is a side view of the crop diverter system
of Fig. 1 in a second position;
Fig. 3 is an end view of the crop diverter system
of Fig. 1 with the system in an intermediate
position;
Fig. 4 is a side view of a second example of a
crop diverter system in a first position;
Fig. 5 is a side view of the system shown in Fig.
4 in a second position; and
Fig. 6 is an end view showing the system of Fig. 4
in an intermediate position.
Fig. 1 shows a first example of a crop diverter system 1 which includes a conveyor 2 which conveys a crop, such as potatoes, in the direction of arrows 3 to a cleaning unit 4 which is used to remove clods, weeds, stones and other extraneous matter from the crop. The diverter system 1 is especially useful with a ground crop. The cleaning unit 4 includes a first conveying mechanism which includes a number of counter rotating rollers 5 rotationally mounted on a central axle 8 which is rotationally driven by a drive system 9.
Typically, the rollers 5 may be rubber and alternate rollers may have a helical formation on their external surface so that as the rollers 5 rotate, the crop is drawn by the formation along the rollers 5 from end 6 to an outlet end 7.
The feed device also includes a rubber star or finger wheel 10 rotationally mounted above end 6 of the rollers 5.
The cleaning unit 4 also includes a pintle belt conveyor 11 which is a rubber conveyor which has a number of protruding rubber projections 12. The pintle belt 11 is rotationally mounted on a number of rollers 13 and may be driven in both directions. The pintle belt 11 has a height adjustment mechanism 14 which permits the height of the pintle belt 11 above the rollers 5 to be adjusted by means of a rotating handle 15. In addition, the pintle belt 11 may be moved in a direction parallel to the plane defined by the rollers 5 by means of a translation mechanism 16 which may be operated to move the pintle belt 11 towards the star wheel 10.
Fig. 2 shows the pintle belt 11 when moved adjacent to the star wheel 10.
At the opposite end of the cleaning unit 4 from the feed conveyor 2 and star wheel 10 is a conveyor 17 which receives the crop flow from the cleaning unit 4 and transfers it to the next stage in processing of the crops.
In use, when the feed conveyor 2 and star wheel 10 feed a crop to the cleaning unit 4, when the pintle belt 11 is in the position shown in Fig. 1, the crop flows over the star wheel 10 and onto the top surface of the counter rotating rollers 5 in the direction of arrows 18. The counter rotating rollers 5 remove extraneous matter from the crop by drawing the extraneous matter down through the rollers and eject the matter out the underside of the rollers 5, while the crop is moved along the top surface of the rollers 5 from the end 6 towards the end 7 by means of the helical formation on the alternative rollers. The crop is then ejected from the counter rotating rollers 5 onto the conveyor 17 for further processing.
If necessary, the height of the pintle belt 11 may be adjusted by turning the handle 15 to operate the height adjustment mechanism 14 to lower the underside of the pintle belt 11 so that the crop is maintained in contact with the surfaces of the rollers 5 as it passes along the rollers 5.
If an operator decides that it is not desirable to use the counter rotating rollers 5 to clean the crop but would prefer to clean the crop using the pintle belt 11 or to transfer the crop directly from the feed conveyor 2 and star wheel 10 to the conveyor 17 and bypass the counter rotating rollers 5, the pintle belt 11 may be moved in the direction of the arrow 19 to the position shown in Fig.2 in which the projections 12 interengage with fingers on the star wheel 10, as the star wheel 10 and pintle belt 11 rotate. In this position, the crop flow 3 is diverted onto the pintle belt 11, in the direction of arrows 20. The crop then passes along the pintle belt 11 as the pintle belt 11 rotates on rollers 13 until the crop is passed from the pintle belt 11 onto the conveyor 17 for further processing. As shown in phantom in Figs. 1 and 2, the conveyor 17 is height adjustable to suit the particular crop being processed and whether the crop is being passed over counting rotating rollers 5 or the pintle belt 11.
In addition, the pintle belt 11 may be adjusted between the positions shown in Figs. 1 and 2 to an intermediate position in which the gap between the star wheel 10 and the pintle belt 11 acts as a filter so that, for example, large potatoes pass onto the pintle belt 11 and follow the crop flow path 20, while smaller potatoes and debris are passed onto the counter rotating rollers 5 so that debris is ejected through the counter rotating rollers 5 and the smaller potatoes pass along the crop flow path 18 shown in Fig. 1.
Such an arrangement is shown in Fig. 3 where larger potatoes 21 can be seen passing along the pintle belt 11 while smaller potatoes 22 are transported along the counter rotating rollers 5.
A second example of a diverter system 30 is shown in
Fig. 4. The diverter system 30 is similar to the diverter system 1 except that a cleaning unit 35 has a second conveying mechanism which has a number of star wheels 31 in place of the pintle belt 11. As shown in
Fig. 4, the cleaning unit 35 operates in the same manner as the cleaning unit 14 in Fig. 1, when the star wheels 31 are in the first position. That is the crop flows off the feed conveyor 2 over star wheel 10 and onto the counter rotating rollers 5 and follows the flow path 18 over the counting rotating rollers 5 before being ejected from the cleaning unit 35. In
Fig. 4, the conveyor 17 has been replaced by a number of star wheels 32 which pass the crop from the cleaning unit 4 onto a loading elevator 34.
As with the cleaning unit 4, a translational movement mechanism 16 on the cleaning unit 35 may be operated to move the second conveying mechanism, in this case the star wheels 31 adjacent to the star wheel 10 (see Fig.
5) so that the crop flow 3 passes over star wheel 10 and onto the star wheels 31 to follow crop flow path 36 and bypass the counter rotating rollers 5. After passing over the star wheels 31, the crop then flows onto the star wheels 32 before passing on to the loading elevator 34. As with the conveyor 17, the star wheels 32 are height adjustable to accommodate different sizes of crops and depending on whether the star wheels 31 or counter rotating rollers 5 are being used to convey the crop through the cleaning unit 35.
As with the pintle belt 11, star wheels 31 may be moved to an intermediate position so that the gap between the star wheel 10 and the star wheel 31 closest to the star wheel 10 acts as a filter so that, for example, large potatoes 21 may be passed over the star wheels 31 and follow crop flow path 36 and smaller potatoes 22 and debris are passed on to the counter rotating rollers 5 and follow the flow path 18, as shown in Fig. 6.
Furthermore, the cleaning unit may have any different combination of conveying mechanisms mounted within it.
For example, the conveying mechanisms may have a pintle belt as the lower mechanism, as an alternative to the counter rotating rollers.
An advantage of the invention is that an operator may choose to pass a crop through the cleaning unit 4, 35 without having to change the cleaning unit or change harvesting machines, by moving the second (or upper) conveying mechanism with respect to the feed conveyor and first (or lower) conveying mechanism.
Modifications and improvements may be incorporated without departing from the scope of the invention.
Claims (17)
1. Apparatus for conveying crops comprising a crop entry point, a first conveying mechanism located adjacent the crop entry point, and a second conveying mechanism movably mounted with respect to the crop entry point and the first conveying mechanism, the second conveying mechanism being moveable between a first position in which crops flow from the crop entry point onto the first conveying mechanism, and a second position in which the second conveying mechanism intercepts the crops from the crop entry point so that the crops flow from the crop entry point onto the second conveying mechanism.
2. Apparatus according to claim 1, wherein the first conveying mechanism is a cleaning device to separate extraneous matter from the crop.
3. Apparatus according to claim 1 or claim 2, wherein the first conveying mechanism is a separator to separate different sections of the crop.
4. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is a cleaning device which separates extraneous matter from the crop.
5. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is a separator which separates different sections of the crop.
6. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is different from the first conveying mechanism.
7. Apparatus according to any of the preceding claims, wherein the first conveying mechanism comprises an array of counter rotating rollers which convey the crop in a direction substantially parallel to the longitudinal axes of the rollers.
8. Apparatus according to any of the preceding claims, wherein the second conveying mechanism comprises a rubber pintle belt.
9. Apparatus according to any of the preceding claims, wherein the direction of movement of the second conveying mechanism is reversible and moves in one direction in the first position and moves in the opposite direction in the second position.
10. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is located above the first conveying mechanism and the feed device feeds the crop flow from above the first conveying mechanism such that when the second conveying mechanism is in the second position, the second conveying mechanism is located between the first conveying mechanism and the feed device to intercept the crop flow from the feed device so that the crop flow passes onto the second conveying mechanism.
11. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is movable from the first to the second position in a plane which is substantially parallel to the flow of crop on the second conveying mechanism.
12. Apparatus according to any of the preceding claims, wherein the second conveying mechanism is movable to an intermediate position between the first and second position.
13. Apparatus according to any of the preceding claims, wherein the underside of the second conveying mechanism retains the crop substantially in contact with the first conveying mechanism when the second conveying mechanism is in the first position.
14. Apparatus according to any of the preceding claims, wherein the apparatus further comprises a height adjustment mechanism to permit the height of the second conveying mechanism above the first conveying mechanism to be adjusted.
15. Apparatus according to any of the preceding claims, wherein the angle of the first and/or second conveying mechanisms to the horizontal is adjustable so that the plane on which the ground crop is conveyed is adjustable.
16. Apparatus according to any of the preceding claims, wherein the apparatus is for conveying a ground crop.
17. Apparatus for conveying crops, substantially as hereinbefore described with reference to any of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9608098.1A GB9608098D0 (en) | 1996-04-19 | 1996-04-19 | Apparatus for conveying crops |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9707916D0 GB9707916D0 (en) | 1997-06-04 |
| GB2312144A true GB2312144A (en) | 1997-10-22 |
| GB2312144B GB2312144B (en) | 1998-09-16 |
Family
ID=10792314
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9608098.1A Pending GB9608098D0 (en) | 1996-04-19 | 1996-04-19 | Apparatus for conveying crops |
| GB9707916A Expired - Fee Related GB2312144B (en) | 1996-04-19 | 1997-04-18 | Apparatus for conveying crops |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9608098.1A Pending GB9608098D0 (en) | 1996-04-19 | 1996-04-19 | Apparatus for conveying crops |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9608098D0 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1287730A1 (en) | 2001-08-31 | 2003-03-05 | Franz Grimme Landmaschinenfabrik GmbH & Co. KG. | Harvester for root crops, particularly potatoes |
| GB2399779A (en) * | 2003-01-29 | 2004-09-29 | Tickhill Eng Co Ltd | Grader |
| BE1017130A5 (en) * | 2006-05-04 | 2008-03-04 | Avr Bvba | POTATO ROOM MACHINE. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499988A (en) * | 1982-05-03 | 1985-02-19 | Sig Schweizerische Industrie-Gesellschaft | Method and apparatus for deflecting articles during their conveyance |
| GB2195223A (en) * | 1986-07-17 | 1988-04-07 | Miltec Agricultural Limited | Sorting apparatus for potatoes |
-
1996
- 1996-04-19 GB GBGB9608098.1A patent/GB9608098D0/en active Pending
-
1997
- 1997-04-18 GB GB9707916A patent/GB2312144B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499988A (en) * | 1982-05-03 | 1985-02-19 | Sig Schweizerische Industrie-Gesellschaft | Method and apparatus for deflecting articles during their conveyance |
| GB2195223A (en) * | 1986-07-17 | 1988-04-07 | Miltec Agricultural Limited | Sorting apparatus for potatoes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1287730A1 (en) | 2001-08-31 | 2003-03-05 | Franz Grimme Landmaschinenfabrik GmbH & Co. KG. | Harvester for root crops, particularly potatoes |
| GB2399779A (en) * | 2003-01-29 | 2004-09-29 | Tickhill Eng Co Ltd | Grader |
| GB2399779B (en) * | 2003-01-29 | 2006-06-28 | Tickhill Eng Co Ltd | Grader |
| BE1017130A5 (en) * | 2006-05-04 | 2008-03-04 | Avr Bvba | POTATO ROOM MACHINE. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9707916D0 (en) | 1997-06-04 |
| GB9608098D0 (en) | 1996-06-26 |
| GB2312144B (en) | 1998-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20060418 |