Rotational Rotor Discharge Deflector

Abstract

An agricultural vehicle including a rotor configured for threshing a crop material and a housing located at a distance radially away from the rotor and circumferentially encasing at least a portion of the rotor. The agricultural vehicle also includes a discharge chopper positioned downstream of the rotor in a direction of crop material flow, and a discharge deflector moveably connected to the housing, circumferentially disposed around at least a portion of the rotor, and located at a radial distance away from the rotor. The discharge deflector has a distal end that defines a discharge opening for allowing the crop material to pass from the rotor to the discharge chopper such that as the discharge deflector is moved a circumferential position of the discharge opening is correspondingly moved without changing the radial distance between the discharge deflector and the rotor.

Claims

1. An agricultural vehicle, comprising: a rotor configured for threshing a crop material; a housing located at a distance radially away from the rotor and circumferentially encasing at least a portion of the rotor; a discharge chopper positioned downstream of the rotor in a direction of crop material flow; and a discharge deflector moveably connected to the housing, circumferentially disposed around at least a portion of the rotor, and located at a radial distance away from the rotor, said discharge deflector having a distal end that defines a discharge opening for allowing the crop material to pass from the rotor to the discharge chopper such that as said discharge deflector is moved a circumferential position of the discharge opening is correspondingly moved without changing said radial distance between the discharge deflector and the rotor.

2. The agricultural vehicle of claim 1, wherein said housing has an inner surface, and said discharge deflector is moveably connected to the inner surface of the housing.

3. The agricultural vehicle of claim 2, further including a deflector track circumferentially disposed around at least a portion of the rotor and fixedly connected to the inner surface of the housing, said deflector track slideably mounting the discharge deflector such that at least a portion of the discharge deflector is slideably received within the deflector track.

4. The agricultural vehicle of claim 1, further including a drive configured for rotating the discharge deflector relative to the rotor in a circumferential direction.

5. The agricultural vehicle of claim 4, wherein said drive is one of a hydraulic drive and an electric drive.

6. The agricultural vehicle of claim 4, wherein said drive includes at least one gear, and said discharge deflector includes a gear track such that said at least one gear correspondingly mates with said gear track in order to move the discharge deflector.

7. The agricultural vehicle of claim 1, wherein said discharge deflector extends around a majority of an upper perimeter of the rotor.

8. A residue system for an agricultural vehicle having a rotor and a housing surrounding the rotor, comprising: a discharge chopper configured for processing a crop material downstream of the rotor in a direction of crop material flow; and a discharge deflector configured for being moveably connected to the housing, circumferentially disposed around at least a portion of the rotor, and located at a radial distance away from the rotor, said discharge deflector having a distal end that defines a discharge opening for allowing the crop material to pass from the rotor to the discharge chopper such that as said discharge deflector is moved a circumferential position of the discharge opening is correspondingly moved without changing said radial distance between the discharge deflector and the rotor.

9. The residue system of claim 8, wherein said housing has an inner surface, and said discharge deflector is configured for being moveably connected to the inner surface of the housing.

10. The residue system of claim 9, further including a deflector track circumferentially disposed around at least a portion of the rotor and configured for being fixedly connected to the inner surface of the housing, said deflector track slideably mounting the discharge deflector such that at least a portion of the discharge deflector is slideably received within the deflector track.

11. The residue system of claim 8, further including a drive configured for rotating the discharge deflector relative to the rotor in a circumferential direction.

12. The residue system of claim 11, wherein said drive is one of a hydraulic drive and an electric drive.

13. The residue system of claim 11, wherein said drive includes at least one gear, and said discharge deflector includes a gear track such that said at least one gear correspondingly mates with said gear track in order to move the discharge deflector.

14. The residue system of claim 8, wherein said discharge deflector is configured for extending around a majority of an upper perimeter of the rotor.

15. A method of operating an agricultural vehicle having a rotor and a housing surrounding the rotor, comprising the steps of: providing a residue system including a discharge chopper configured for processing a crop material downstream of the rotor in a direction of crop material flow, and a discharge deflector configured for being moveably connected to the housing, circumferentially disposed around at least a portion of the rotor, and located at a radial distance away from the rotor, said discharge deflector having a distal end that defines a discharge opening for allowing the crop material to pass from the rotor to the discharge chopper; directing a crop material flow by the discharge deflector toward the discharge chopper; changing a circumferential position of the discharge opening by moving said discharge deflector; and maintaining said radial distance between the discharge deflector and the rotor as said circumferential position of the discharge opening is changed.

16. The method of claim 15, wherein said housing has an inner surface, and said discharge deflector is configured for being moveably connected to the inner surface of the housing.

17. The method of claim 16, further including a deflector track configured for being circumferentially disposed around at least a portion of the rotor and fixedly connected to the inner surface of the housing, said deflector track slideably mounting the discharge deflector such that at least a portion of the discharge deflector is slideably received within the deflector track.

18. The method of claim 15, further including a drive configured for rotating the discharge deflector relative to the rotor in a circumferential direction.

19. The method of claim 18, wherein said drive includes at least one gear, and said discharge deflector includes a gear track such that said at least one gear correspondingly mates with said gear track in order to move the discharge deflector.

20. The method of claim 15, wherein said discharge deflector is configured for extending around a majority of an upper perimeter of the rotor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] For the purpose of illustration, there are shown in the drawings certain embodiments of the present invention. It should be understood, however, that the invention is not limited to the precise arrangements, dimensions, and instruments shown. Like numerals indicate like elements throughout the drawings. In the drawings:

[0011] FIG. 1 illustrates a schematic view of a known agricultural vehicle;

[0012] FIG. 2 illustrates a schematic view of an exemplary embodiment of an agricultural vehicle including a rotor and a rotational deflector, in accordance with an exemplary embodiment of the present invention;

[0013] FIG. 3 illustrates a perspective view of the rotor and the rotational deflector of FIG. 2, in accordance with an exemplary embodiment of the present invention;

[0014] FIG. 4 illustrates a perspective view of the rotational deflector and a motor, in accordance with an exemplary embodiment of the present invention; and

[0015] FIG. 5 illustrates a perspective view of the rotational deflector of FIG. 2, in accordance with an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0016] The terms “grain”, “straw” and “tailings” are used principally throughout this specification for convenience but it is to be understood that these terms are not intended to be limiting. Thus “grain” refers to that part of the crop material which is threshed and separated from the discardable part of the crop material, which is referred to as non-grain crop material, MOG or straw. Incompletely threshed crop material is referred to as “tailings”. Also, the terms “forward”, “rearward”, “left” and “right”, when used in connection with the agricultural harvester and/or components thereof are usually determined with reference to the direction of forward operative travel of the harvester, but again, they should not be construed as limiting. The terms “longitudinal” and “transverse” are determined with reference to the fore-and-aft direction of the agricultural harvester and are equally not to be construed as limiting.

[0017] Referring now to the drawings, and more particularly to FIG. 1, there is shown a known agricultural vehicle 100 in the form of a combine 100, which generally includes a threshing system 110 for threshing and separating the crop material and a residue system 120 for processing and dispensing the crop material, such as MOG, out of the rear of the combine 100.

[0018] The threshing system 110 is of the axial-flow type, and generally includes a rotor 112, which is rotatable about a longitudinal axis A1 thereof and is at least partially enclosed by and rotatable within a corresponding, cylindrical housing 114. The housing 114 is located at a distance radially away from the rotor and circumferentially encases at least a portion of the rotor 112 and generally includes an upper hemisphere in the form of a rotor shield and a lower hemisphere in the form of one or more concave(s) located at a distance radially away from the rotor 112. The housing 114 may also include an upper race track. A gap, e.g. a clearance passage, exists between the rotor 112 and the housing 114, which allows crop material to be threshed therethrough. Larger elements, such as stalks, leaves and the like may be discharged out of the rear of the rotor 112 toward the residue system 120 for eventually discharging out of the rear of the combine 100. Smaller elements of crop material, including grain and non-grain crop material, and including particles lighter than grain, such as chaff, dust and straw, may be discharged through the perforations of the concave(s).

[0019] The residue system 120 generally includes a discharge chopper 122, a chopper floor pan 124, beater plates 126, a discharge deflector 128, and a spreader for discharging the MOG onto the field (not shown). The discharge chopper 122 is positioned downstream of the rotor 112 in a direction of crop material flow. The discharge chopper 122 rotates about an axis of rotation and typically includes a discharge rotor 130 and multiple knives 132. The discharge chopper 122 may be operably driven by the prime mover of the agricultural vehicle 100. The beater plates 126 may be connected to the housing 114, which encases the rotor 112. The discharge deflector 128 directs the crop residue onto the discharge chopper 122 at a desired location. The discharge deflector 128 may be pivotally connected to one of the beater plates 126. As shown, the discharge deflector 128 is connected to the right beater plate 126. The discharge deflector 128 may be in the form of a metal panel which pivots to alter the flow bath of the crop residue exiting to the rotor 112. In other words, as the discharge deflector 128 pivots, the distal end of the discharge deflector 128 moves radially inward or outward relative to the rotor 112. When the discharge deflector 128 is moved inwardly toward the rotor 112, the discharge opening, e.g. clearance passageway, for the crop residue to flow therebetween becomes smaller. The reduction in size of the discharge opening can lead to a congested material flow, energy inefficiencies, and a reduced operating life of the threshing system 110.

[0020] Referring now collectively to FIGS. 2-3, there is shown an exemplary embodiment of a residue system 200 in accordance with the present invention. The residue system 200 may be incorporated within the agricultural vehicle 100 as described above, and thereby like parts have been identified with like reference characters. However, the residue system 200 may be incorporated into any desired agricultural vehicle or implement. The residue system 200 is configured for processing the residue exiting the threshing system 110, e.g. MOG exiting from the rotor 112. The residue system 200 may generally include a discharge chopper 202, a chopper floor pan 204, beater plates 206, a discharge deflector 208, and a spreader for discharging the MOG onto the field (not shown).

[0021] The discharge chopper 202 and the chopper floor pan 204 may be in the form of a discharge chopper 122 and a chopper floor pan 124, respectively, as described above. The beater plates 206 may extend on each side of the rotor 112 from the housing 114 to the discharge chopper 122. As shown in the present exemplary embodiment, the beater plates 206 do not mount the discharge deflector 208.

[0022] The discharge deflector 208 may be circumferentially disposed around at least a portion of the rotor 112 and located at a radial distance away from the rotor 112. The discharge deflector 208 may extend around a majority of an upper perimeter of the rotor 112. The discharge deflector 208 has a distal end 208E that defines a discharge opening 210, e.g. a clearance passageway, for allowing the crop material, such as MOG, to pass from the rotor 112 to the discharge chopper 202 (FIG. 2). In other words, the discharge deflector 208 contacts and directs the crop residue onto a desired location of the discharge chopper 202. When the discharge deflector 208 is moved, a circumferential position of the discharge opening 210 is correspondingly moved without changing the radial distance between the discharge deflector 208 and the rotor 112. In this regard, the discharge deflector 208 can be rotated clockwise or counterclockwise in order to change the physical location of the discharge opening 210 along the perimeter of the travel path of the discharge deflector 208. Thereby, throughout the travel path of the discharge deflector 208, the crop residue is never forced to pass through a reduced in size opening. The discharge deflector 208 can be moveably connected to the housing 114, and more particularly to the inner surface of the housing 114. The housing 114 may include a race track 114 to which the discharge deflector 208 is mounted. It should be appreciated that the threshing system 110 may not include a racetrack 114 onto which the discharge deflector 208 is mounted; and thereby, the discharge deflector 208 can be mounted to an extended rotor cage. The body of the discharge deflector 208 may be in the form of a monolithically formed, arced metal panel. In another exemplary embodiment, the discharge deflector 208 can be designed as two or more separate sections. If the discharge deflector 208 is formed as multiple sections, then the discharge opening 210 may be increased or decreased. In this regard, the size of the discharge opening may be increased in order to decrease the requisite horsepower of the rotor 112. Additionally, if the discharge deflector 208 is formed as multiple sections, the separate sections may be moved independently of one another via respective drives.

[0023] Referring now to FIG. 4, the residue system 200 may also include a drive 400 for rotating the discharge deflector 208 relative to the rotor 112 in a circumferential direction. In more detail, the drive 400 may include a gear 402 and the discharge deflector 208 may have a corresponding gear track 410. In this respect, as the drive 400 rotates, the teeth of the gear 402 respectively mate with the gearing of the gear track 410 to rotate the whole body of the discharge deflector 208 around the rotor 112 in the circumferential direction. The drive 400 may be in the form of a hydraulic drive or an electric drive. It should be appreciated that the discharge deflector 208 may be moved by way of a hydraulic motor, an electrical motor, or manual actuation by an operator.

[0024] The drive 400 may also be operably coupled to a control unit. In this way, the movement of the discharge deflector 208 can be automated by the control unit to automatically adjust the discharge deflector 208 in various positions in order to automatically achieve an optimal spread distribution of the crop material discharged from the rotor 112. The control unit may be in the form of any desired electronic control unit (ECU), and the control unit may be incorporated into existing hardware and/or software of the agricultural vehicle 100. The control unit may include software code or instructions which are tangibly stored on a tangible computer readable medium. The computer readable medium may be in the form of a magnetic medium, e.g., a computer hard drive, an optical medium, e.g., an optical disc, solid-state memory, e.g., flash memory, or other storage media known in the art. Thus, any of the functionality performed by the controller described herein may be implemented in software code or instructions which are tangibly stored on the tangible computer readable medium. Upon loading and executing such software code or instructions by the control unit, the control unit may perform any of the functionality described herein.

[0025] Referring now collectively to FIGS. 2-5, the residue system 200 may also include a deflector track 500 circumferentially disposed around at least a portion of the rotor 112 and fixedly connected to the inner surface of the housing 114. The deflector track 500 is configured for slideably mounting the discharge deflector 208 such that at least a portion of the discharge deflector 208 is slideably received within the deflector track 500. For example, the deflector track 500 may extend fully around the travel path of the discharge deflector 208.

[0026] A method for operating an agricultural vehicle 100 is also provided by an exemplary embodiment of the present invention. The method includes an initial step of providing a residue system 200, as discussed above. The method also includes the steps of directing a crop material flow by the discharge deflector 208 toward the discharge chopper 202, changing a circumferential position of the discharge opening 210 by moving the discharge deflector 208, and maintaining the radial distance between the discharge deflector 208 and the rotor 112 as the circumferential position of the discharge opening 210 is changed.

[0027] These and other advantages of the present invention will be apparent to those skilled in the art from the foregoing specification. Accordingly, it is to be recognized by those skilled in the art that changes or modifications may be made to the above-described embodiments without departing from the broad inventive concepts of the invention. It is to be understood that this invention is not limited to the particular embodiments described herein, but is intended to include all changes and modifications that are within the scope and spirit of the invention.