CONVEYING SYSTEM FOR A FRUIT HARVESTER

Abstract

A conveying system for a fruit harvester that includes at least one conveyor traveling along a travel path that comprises a first path section which defines a first longitudinal axis and a plurality of buckets connected to the at least one conveyor. The first path section is at least partially twisted such that the at least one conveyor and the plurality of buckets along therewith twist relative to the first longitudinal axis of the first path section.

Claims

1. A conveying system for a fruit harvester comprising: at least one conveyor operable for traveling along a travel path that comprises a first path section which defines a first longitudinal axis; and a plurality of buckets connected to the at least one conveyor, the plurality of buckets being configured for receiving and conveying a picked crop, wherein the first path section is at least partially twisted such that the at least one conveyor and the plurality of buckets along therewith twist relative to the first longitudinal axis of the first path section.

2. The conveying system of claim 1, wherein the first path section is a back path section in which the plurality of buckets travel upwardly.

3. The conveying system of claim 2, wherein the travel path further comprises a top path section, a bottom path section, a front path section, and the back path section which is downstream of the bottom path section, and the bottom path section defines a second longitudinal axis.

4. The conveying system of claim 3, wherein the first longitudinal axis of the back path section is angled relative to the second longitudinal axis of the bottom path section such that the at least one conveyor is horizontally rotated when traveling from the bottom path section to the back path section and the at least one conveyor is rotated in the back path section as it twists relative to the first longitudinal axis of the first path section.

5. The conveying system of claim 1, wherein the plurality of buckets twist outwardly in the first path section for disengaging with any portion of a plant after receiving the picked crop.

6. The conveying system of claim 1, wherein the conveying system further comprises at least one track supported by a chassis, the at least one track defining the travel path of the at least one conveyor, and the at least one conveyor is guided by and moves in response to the at least one track.

7. The conveying system of claim 6, wherein the at least one track comprises a twisted track portion, and the twisted track portion has a twisted profile which causes the at least one conveyor to twist in relation thereto.

8. The conveying system of claim 7, wherein the twisted track portion of the at least one track defines the back path section of the travel path, and the twisted profile of the twisted track portion extends along the entire back path section.

9. The conveying system of claim 7, further comprising at least one support member connected to the twisted track portion for supporting the twisted track portion.

10. The conveying system of claim 9, further comprising at least one tensioner connected to the at least one support member.

11. The conveying system of claim 10, wherein the at least one support member has a top end and a bottom end, and the top end of the at least one support member is connected to the twisted track portion and the bottom end of the at least one support member is connected to the at least one tensioner.

12. The conveying system of claim 11, further comprising a pair of brackets connecting the top end of the at least one support member to the twisted track portion and a mount for mounting the bottom end of the at least one support member.

13. The conveying system of claim 10, wherein the at least one tensioner is in the form of at least one chain.

14. The conveying system of claim 1, wherein the at least one conveyor is in the form of at least one chain.

15. A fruit harvester comprising the conveying system of claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and the invention will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein:

[0024] FIG. 1 is a top view of a typical grape harvester;

[0025] FIG. 2 is a perspective view of a conveying system for a fruit harvester according to an exemplary embodiment of the present invention; and

[0026] FIG. 3 is a bottom perspective view of the conveying system of FIG. 2.

[0027] Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate embodiments of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.

DETAILED DESCRIPTION OF THE INVENTION

[0028] The terms “forward”, “rearward”, “left” and “right”, when used in connection with the work vehicle and/or components thereof are usually determined with reference to the direction of forward operative travel of the agricultural vehicle, but again, they should not be construed as limiting.

[0029] Referring now to the drawings, and more particularly to FIG. 1, there is shown a known fruit harvester 10 in the form of a grape harvester 10. The fruit harvester 10 can be variously configured for different applications, such as for harvesting olives. The fruit harvester 10 can include a chassis 12, wheels and/or tracks (not shown), a cab 14, and multiple different sub-systems and components, such as a picking system 16 (not shown) with multiple shakers for removing the grapes from the vines, a conveying system 18 for transporting the picked fruit, a cleaning system with multiple conveyors and fans (not shown), and storage containers 20 located at the lateral sides of the fruit harvester 10.

[0030] The conveying system 18 includes a pair of juxtaposed conveyors (not shown) and multiple deformable buckets 22 which are respectively connected to the Noria conveyors. Each conveyor is typically in the form of a chain, traveling within a track, that is driven by a motor. Each conveyor has a respective travel path with a top, bottom, front, and back path section. The travel paths of the conveyors are typically mirrored. As can be appreciated, the buckets 22 collect the picked, i.e. free, crop in the bottom path section, transport the picked crop upwardly toward the cleaning system in the back path section, deposit the picked crop onto the cleaning system in the top path section, and return to their pick-up position in the front path section. The looped travel path of the conveyors causes the conveyors, and the buckets 22 along therewith, to be laterally closer to one another in the bottom path section. In this regard, in the bottom path section, the buckets 22 may mesh or intertwine with one another to reduce any gaps between the buckets 22 and/or squeeze up against the stems of the plants. Given the interlocking relationship between the left and right buckets and the tight tolerance between the buckets 22 and the tracks, as the buckets 22 travel rearwardly and upwardly in the bottom and back path sections, the buckets 22 may undesirably squeeze, grip, pull, break off, tear, or otherwise damage the plants and/or or portions thereof.

[0031] Referring now to FIGS. 2-3, there is shown a conveying system 30 for a fruit harvester 10 according to an embodiment of the present invention. For example, the conveying system 30 may replace the conveying system 18 of the fruit harvester 10, as described above. However, it should be appreciated that the conveying system 30 may be incorporated into any desired crop harvester. The conveying system 30 generally includes at least one conveyor 32, which travels along a travel path, multiple buckets 34 attached thereto. The conveying system 30 may also include at least one track 36 that defines the geometry of the travel path of a respective conveyor 32. As shown, the conveying system 30 includes left and right tracks 36, conveyors 32 disposed within the tracks 36, and buckets 34 respectively attached to each conveyor 32. As described in more detail below, the travel path of each conveyor 32 widens at the back of the fruit harvester 10 and also provides for the buckets 34 to twist outwardly as they travel upwardly at the back of the fruit harvester 10 in order to prevent the buckets 34 from damaging any portion, e.g. branches, leaves, etc., of the plants being harvested.

[0032] Each conveyor 32 is movably connected to and positioned within a respective track 36. Each conveyor 32 may also mount the buckets 34. The conveyors 32 may be in the form of endless chains 32; however, the conveyors 32 may each be in the form of any desired conveyor, such as a belt or cable. The conveyor 32 may comprise any desired material, such as metal. Each conveyor 32 may be rotated by a respective motor or a common motor and shaft (not shown). The conveyors 32 may also be synchronized to one another via a synchronizing member (not shown).

[0033] Each bucket 34 may be connected to a respective conveyor 32. For instance, the bases of the buckets 34 may be fastened onto the conveyors 32. Each bucket 34 may be in the form of any desired receiving member. The buckets 34 may be individual members connected adjacent to one another, or the buckets 34 may be formed by a series of recessed and projected portions of a single semi-deformable band. Each bucket 34 may comprise any desired shape and material, such as a semi-deformable plastic material.

[0034] As each conveyor 32 moves along its respective travel path, the buckets 34 are correspondingly and sequentially positioned to receive the picked crop at the bottom path section, transport the picked crop upwardly and rearwardly at the back path section, deposit the picked crop onto the cleaning system in a downward-facing position at the top path section, and travel downwardly and forwardly at the front path section to be reset for again receiving the picked crop. Each path section of the travel path may define a respective longitudinal axis. For instance, the back path section may have a longitudinal axis A1 which is approximately perpendicular, plus or minus 30 degrees, to the longitudinal axis A2 of the bottom path section in order to upwardly move the buckets 34 (FIG. 2). In this regard, each conveyor 32 is horizontally rotated when traveling from the bottom path section to the back path section. Furthermore, each conveyor 32 is vertically rotated in the back path section, via a respective track 36, such that each conveyor 32 twists relative to the longitudinal axis A1 of the back path section and allows the buckets 34 to be outwardly twisted for disengaging or releasing any portion of the plant.

[0035] The tracks 36 may be connected to and supported by the chassis 12 of the fruit harvester 10. The shape of each track 36 defines a respective travel path for each conveyor 32. In other words, the geometry of each track 36 defines the travel path of each conveyor 32. Hence, the top, bottom, front, and back portions of each track define the top, bottom, front, and back path sections of each travel path, respectively. The tracks 36 may be in the form of segmented track portions or a single, continuous track. As shown, each track 36 is formed by a series of interconnected track portions, including bottom track portion 38 and a twisted track portion 40 located downstream of the bottom track portion 38 and at the back of the fruit harvester 10. As used herein, the term “twisted track portion” may refer to a track portion that has a bend, tilt, or rotation relative to its longitudinal axis. Each twisted track portion 40 has a twisted profile or contour which causes the respective conveyor 32 to twist in relation thereto. The twisted track portion 40 effectively defines the at least partially twisted portion of the back path section. The twisted profile of the twisted track portion 40 may extend along the entire back path section; however, the twisted profile of the twisted track portion 40 may only extend along a portion of back path section. Thus, when transitioning from the bottom track portion 38 to the twisted track portion 40, the conveyors 32 and the buckets 34 therewith are initially deflected outwardly, rotated horizontally, and then twisted horizontally immediately after traveling vertically upward. Each track 36 may be in the form of any desired track, such as a channel and/or tube. Each track 36 may comprise any desired shape and material, such as metal.

[0036] Each twisted track portion 40 may be interconnected in between the bottom track portion 38 and the top track portion (unnumbered). Additionally, each twisted track portion 40 may be twisted by and/or held in place by support members 42 and accompanying tensioners 44 attached to and tensioning the support members 42. The bottom end of each support member 42 may be connected to a respective bottom track portion 38, by one or more mounts 46 on one side of the bottom end, and a respective tensioner 44 on the opposite side of the bottom end. The mounts 46 may be semi-deformable mounts 46 which allow the support members 42 to flex, i.e., at least partially move or twist, relative thereto. The top end of each support member 42 may be connected to a respective twisted track portion 40, by one or more brackets 48 and fasteners (FIG. 2). For example, a pair of slotted brackets 48 may connect the top of each support member 42 to the top of each twisted track portion 40. Each support member 42 may be in the form of any desired beam and may comprise any desired material. Each tensioner 44 may be connected in between a bottom corner of a respective support member 42 and a respective bottom track portion 38 and/or chassis 12. The tensioners 44 act to secure the support members 42 so that the entire system is secured in case the fruit harvester 10 is impacted by an object, such as a stone. Each tensioner 44 may be in the form of any desired chain, cable, and/or or biasing member and may comprise any desired material. As shown, the tensioners 44 are in the form of metal chains 44.

[0037] While this invention has been described with respect to at least one embodiment, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.