WO1997024919A1 - Bec cueilleur a mais pliable a transporteur a vis sans engorgement - Google Patents

Bec cueilleur a mais pliable a transporteur a vis sans engorgement Download PDF

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Publication number
WO1997024919A1
WO1997024919A1 PCT/US1996/020834 US9620834W WO9724919A1 WO 1997024919 A1 WO1997024919 A1 WO 1997024919A1 US 9620834 W US9620834 W US 9620834W WO 9724919 A1 WO9724919 A1 WO 9724919A1
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WO
WIPO (PCT)
Prior art keywords
auger
trough
accordance
corn head
pivotable
Prior art date
Application number
PCT/US1996/020834
Other languages
English (en)
Inventor
Mark D. Richardson
Joel C. Stefl
James E. Glazier
Edwin J. Zeitvogel
Original Assignee
Byron Enterprises, Inc.
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
Priority claimed from US08/582,687 external-priority patent/US5673543A/en
Priority claimed from US08/680,503 external-priority patent/US5724798A/en
Application filed by Byron Enterprises, Inc. filed Critical Byron Enterprises, Inc.
Priority to AU16895/97A priority Critical patent/AU1689597A/en
Publication of WO1997024919A1 publication Critical patent/WO1997024919A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/14—Mowing tables
    • A01D41/144—Foldable headers

Definitions

  • the present invention relates to ear corn harvesting apparatus known as a "corn head" for mounting on the forward part of a self-propelled vehicle, more particularly to corn heads having auger conveyors for collecting corn ears harvested simultaneously from a plurality of corn rows and conveying the ears laterally to a central region of the corn head, and most particularly to a foldable corn head which is adapted to be decreased in width to facilitate over-the-road travel of the vehicle by pivoting one or more portions of the corn head still particularly to a self-actuated hinge latch for securing in operating position the foldable portion of foldable corn head of a corn harvesting machine.
  • Corn harvesting heads are well known.
  • harvesting apparatus is disposed on the front of a self- propelled tractor having a central, longitudinal conveyance system which carries ears from the corn head to a receiving vessel or vehicle.
  • the harvesting apparatus typically comprises a pair of row separators which straddle a row and a pair of driven gathering belts and cutters which strip the ears from the stalks, discard the stalks, and convey the ears rearward to the tractor conveyor.
  • corn heads are capable of harvesting a plurality of rows, up to eight or more, simultaneously by ganging side-by-side replicate row harvesting apparatus. Such machines are necessarily quite wide, up to five meters or more. A serious drawback is that their width makes road travel between cornfields difficult or impossible. In some areas, especially in Europe, such wide machines are not permitted on the roads. Accordingly, mechanisms have been devised by some corn head manufacturers to permit narrowing of their corn heads for over-the-road travel by pivoting upward and inward one or more of the outer harvesting sections so that in travel mode the corn head is no wider than the tractor bearing it.
  • foldable corn heads are available from Fantini Bouchard Agriculture, Saint-Brice, France; F.lli CRESSONI s.p.a., Mantova, Italy; CASE IH, Division Agricole de Case Poclain S.A., Le Plessis-Belleville Cedex. France; and Pixall Corp., Clear Lake, Wisconsin.
  • a multiple-row corn head requires a mechanism to gather the ears from the plurality of harvesting heads and convey them to the center of the machine.
  • a horizontal auger conveyor is disposed aft of the harvesting heads and transversely of the machine.
  • a typical harvester auger conveyor is disclosed in US Patent No. 4,300,333 issued November 17, 1981 to Anderson.
  • the conveyor may consist of a driven auger in a partial trough, the auger having a helical flange attached to a central longitudinal tube which may contain a drive shaft or other drive elements.
  • the left and right halves of the auger have opposite-sense helices, so a given rotational direction of the entire auger serves to urge ears from the left and right portions of the corn head to the center where the ears are discharged through an exit throat in the back of the head onto the longitudinal tractor conveyor.
  • Augers for conveying corn or other grains are disclosed, for example, in US Patents Nos. 2,772,767 issued December 4, 1956 to Seifert; 3,540,195 issued November 17, 1970 to van der Lely; and 4,903,470 issued February 27, 1990 to Hemker et al.
  • Folding the harvesting mechanism requires that the auger tube, flange, and trough be pivotably separable for transport and subsequently reattachable in driving/driven relationship for use.
  • Known harvesters have brackets and bearings at the separation point in the auger to support and align one or both separated ends of the auger tube (see US Patent No 4,530,429 issued July 23, 1985 to Erickson; the Case IH Harvester Series 1100; the Fantini Bouchard harvester; and the Pixall harvester manufactured by Cressoni.)
  • brackets and bearings are innocuous.
  • the brackets and bearings can occlude a significant portion of the auger trough, preventing the smooth flow of corn ears along the trough. Under heavy load of ears, the auger can become jammed by the obstruction of the bracket to passage of the ears, resulting in damaged ears and potential failure of the equipment.
  • Folding the harvesting mechanism requires that an outer portion of the mechanism on one or both sides of the harvester be pivotably separable on a hinge from the fixed machine frame for transport and be subsequently reattachable in driving/driven relationship for use.
  • a hydraulic actuator operable across the hinge is retracted to lift the pivotable portion into travel position and is extended to return the pivotable portion to operating position.
  • pivotable portion may be held substantially in operating position by the hydraulic actuator in a plane including the actuator, it is desirable to provide an auxiliary positive mechanical latch remote from the plane of actuation to resist torsional stresses on the hinge during field operation of the harvester.
  • the pivotable portion of known foldable harvesters typically is secured to the fixed portion by any of several known latching mechanisms, for example, a hand- actuated bolt or a hydraulic bolt or an electrically- actuated solenoid slug, as in item 68 in the parent application.
  • Hand-actuated latches are undesirable because they require the operator to stop and dismount from the harvester to manually latch or unlatch the mechanism. This can be hazardous, particularly as the pivotable portions may be actuated by powerful hydraulic cylinders. Hydraulically- or electrically-actuated bolts may be operated remotely, but such apparatus can be expensive to provide and is vulnerable to power failure. Thus a need exists for a simple mechanical latching mechanism which can provide a positive latch, which requires no electrical or hydraulic source of power, and which is actuated by the movement of the hinged elements themselves .
  • a foldable multiple-row corn head embodying the invention has a plurality of side-by-side row harvesters which can include separators, cutters, gathering belts and other harvesting elements well known in the trade.
  • At least one end of the corn head has a frame portion supporting a portion of the row harvesters and pivotable with respect to the fixed frame on a hinge having a substantially horizontal axis oriented substantially fore-and-aft of the machine in response to an hydraulic cylinder connected pivotably between the corn head fixed frame and a linkage attached to the pivotable rame.
  • the pivotable portion can be rotated through approximately 180° to place it in inverted position above the next inboard (first fixed) row harvester, thereby decreasing the transverse width of the corn head to facilitate movement of the apparatus over the road.
  • a horizontal auger conveyor comprising a trough containing an auger consisting of a tube provided with a helical flange.
  • the left and right halves of the auger have opposite sense helices so that rotation of the auger in the trough causes ears deposited in the trough by the individual row harvesters to be urged toward the center of the trough for transfer to an additional conveyor exiting the machine.
  • the trough, tube, and auger are matably separable.
  • the stub trough on each pivotable end of the corn head is mounted on an outboard plate attached to the pivotable frame and thus is cantilevered in its extension inward of the plate.
  • the stub auger at each end is rotatably mounted in bearings at the outboard plate within the trough and thus is also cantilevered from the plate.
  • the stub auger in at least one of the pivotable ends is coupled via conventional sprockets and chain to an hydraulic motor for driving the entire assembled auger in harvesting position.
  • each stub auger contains a coupling portion, preferably female, having centering and locking elements for receiving male centering and locking elements disposed within the matable end of the main auger tube.
  • the locking elements are asymmetrically disposed about the axis of the tube to permit locking to occur only when the ends of the fixed and pivotable helical flanges are properly aligned to form a continuous, unbroken flange across the coupling.
  • the main auger tube has no support other than the couplings just described. Since there is an operating clearance of preferably about one-half inch between the auger flange and the trough, the main auger, upon uncoupling of the foldable head portions, settles this distance into the trough.
  • the main auger on the stub augers requires male and female centering cones having radii of more than one-half inch on the respective mating auger sections.
  • a large female outer cone on the stub tube end reacquires a large male cone on the main tube end, positioning the tube portions for subsequent recentering by a smaller axial female cone within the end of the stub shaft.
  • the main auger tube is formed as two mirror-image halves rotatably supported on a plate at the center and cantilevered outward therefrom. Since corn ears are not required to cross the centerline of the apparatus, the obstruction-free feature of the auger in accordance with the present invention is maintained.
  • a central bearing strut fixed vertically to the corn head frame is provided with a bore therethrough.
  • a figured idler shaft for example, hexagonal or splined, is disposed symmetrically through the bore and is journalled in bearings mounted on the plate.
  • Within the left and right halves of the main auger tube are one or more fixed spacers having axial bores adapted to receive the idler shaft which can be retained within the spacers by a pin or bolt.
  • the halves of the main auger are thus cantilevered outward from the central bearing plate. In this configuration, the main auger does not settle into the trough upon decoupling of the ends.
  • a foldable multiple-row corn head embodying the invention has a plurality of side-by-side row harvesters which can include separators, cutters, gathering belts and other harvesting elements well known in the trade. At least one end of the corn head, preferably both ends, has a frame portion supporting a portion of the row harvesters and being pivotable with respect to the fixed frame on a hinge having a substantially horizontal axis oriented substantially fore- and-aft of the machine in response to an hydraulic cylinder connected pivotably between the corn head fixed frame and a linkage attached to the pivotable frame.
  • the pivotable portion can be rotated through approximately 180° to place it either in upright (operating) position adjacent to the next inboard (first fixed) row harvester or alternatively in inverted (travel) position above the next inboard row harvester.
  • Either the fixed portion or the pivotable portion is provided with latching apparatus in accordance with the invention to latch securely the pivotable portion to the fixed portion in operating position.
  • the pivotable portion is provided with a slidable captive pin which extends at rest beyond the inner edge of the pivotable frame, which pin is engaged and driven axially by the fixed frame during closing of the hinge through a plane of rotation.
  • the opposite end of the pin engages and rotates a pivotable crank mounted within the pivotable frame having first and second lever arms preferably of unequal length so that the stroke of the pin is mechanically amplified and translated in a different direction, the pin engaging the first lever arm.
  • a pivotable connecting rod connects the second lever arm of the first crank to a pivotable catch also mounted within the pivotable frame and preferably remote from the plane of rotation of the hinge.
  • the action of the latch is such that, in closing, the lip of the latch approaches the fixed frame member from the rear side.
  • the lengths of the arms on the crank and the ratios of the arm lengths are chosen such that the motion of the latch lip toward or away from the fixed frame member exactly mimics and parallels the axial motion of the pin.
  • the latch holds the hinged elements firmly together so long as the pin is fully depressed by the action of the hinge actuator, and disengages from the rear side of the fixed frame member in exact concert with disengagement of the pivotable portion from the fixed portion of the foldable corn head.
  • a coil spring connecting the second crank to the pivotable frame is extended by the rotation of the catch during closing of the hinge and is thereby biased to assist in opening the latch.
  • FIG. 1 is a perspective view of a foldable corn head in accordance with the invention
  • FIG. 2 is an elevational view, partially in cross- section, showing a foldable end of the corn head of FIG. 1 nearing reconnection of a folded portion into harvesting position, showing the stub auger section cantilevered on a shaft from the trough end plate;
  • FIG. 3 is an elevational view like that of FIG. 2 showing the foldable end of the corn head in folded, or non- harvesting, position;
  • FIG. 4 is a detailed elevational view, partially in cross-section, of a first embodiment of the stub auger and main auger of one end of a separable auger conveyor nearing reconnection as in FIG. 2;
  • FIG. 5 shows the stub auger and main auger of FIG. 4 engaged on their outer acquisition cones but not yet rotationally coupled;
  • FIG. 6 shows the stub auger and main auger of FIGS. 4 and 5 centered on their inner cones and rotationally locked in harvesting position
  • FIG. 7 is an elevational view, partially in cross- section, of a second embodiment of centering and locking apparatus for a stub auger and a main auger in accordance with the invention, showing the centering cones engaged
  • FIG. 8 is a view like that of FIG. 7, showing the augers having rotated to permit rotational locking of the coupling members;
  • FIG. 9 is a view like that of FIG. 4 showing a second foldable portion of a trough and auger at an opposite end thereof from the first foldable portion;
  • FIG. 10 is an elevational view, partially in cross- section, of a second embodiment of a main auger in accordance with the invention, showing the main auger cantilevered on a bearing-mounted idler shaft in a hanging strut;
  • FIG. 11 is a frontal elevational view similar to FIG. 2 showing a self-actuating latch mechanism in accordance with the invention in preparatory position to latch the foldable portion to the fixed portion;
  • FIG. 12 is a plan view from below, showing the foldable portion latched to the fixed portion
  • FIG. 13 and 14 are plan views from below like FIG. 12 showing progressive delatching of the foldable portion from the fixed portion;
  • FIG. 15 is a plan view from below like FIGS. 12-14, showing the self-actuating latch completely delatched and the foldable portion separated from the fixed portion; and FIG. 16 is an enlarged plan view of the area within circle 7 in FIG. 15.
  • a foldable corn head 10 has seven row separators 12 defining six substantially identical row harvesting mechanisms 14.
  • the six row harvesters shown are arbitrary in number. Other pluralities of mechanisms are possible, for example, four, eight, and ten, limited only by the increasing size, weight, and complexity of the apparatus.
  • the row harvesting mechanisms contain common mechanical elements well known in the art, but not shown here, necessary to cut a corn stalk from its base, feed the stalk through the machine, strip or cut corn ears from the stalk, convey the individual ears rearward, and discard the spent stalk material.
  • Auger 22 At the rear of the row harvesters and disposed transversely thereof is an auger conveyor 16 rotationally mounted at its ends 18 and 18' on end plates 20 and 20' to collect ears of corn from the plurality of row harvesters 14 and deliver them to an exit 21 at the rear of the corn head.
  • Auger 22 includes a longitudinally central tube 24 supporting left-hand and right-hand progressing flights of helical flanges 26 and 26' to the left and right sides, respectively of the centerline of the corn head.
  • a cylindrical trough 28, not fully visible in FIG. 1, extends beneath and parallel to, but spaced apart from, auger 22. Trough 28 is closed at its ends by end plates 20 and 20' .
  • Auger 22 is rotationally driven by driving means (not shown) disposed in drive case 30.
  • Behind auger 22 and trough 28 is a fixed frame 32 for supporting the auger drive mechanism and the trough, and for facilitating mounting the corn head on a self-propelled vehicle such as a tractor (not shown) .
  • a self-propelled vehicle such as a tractor (not shown)
  • the trough and end plates may be fabricated as the principal structural members of the corn head, and a separate frame may not be required.
  • Corn head 10 is foldable to a narrower configuration to facilitate being transported over the road while mounted on a tractor without requiring disassembly.
  • One end, and preferably both ends, may be foldable in accordance with the invention.
  • Outer frame portions 34 and 34' of fixed frame 32 each support an outer row separator and one half of a row harvester at opposite transverse ends of the corn head.
  • Actuation means in the form of, for example, hydraulic cylinders 35 and 35' are pivotably attached at inner ends 36 and 36' thereof to fixed frame 32, and at outer ends 38 and 38' thereof to bridging linkages 40 and 40' over hinges 42 and 42' having pivot axes substantially horizontal.
  • Contraction of cylinders 35 and 35' pivots the pivotable outer frames on the hinges, preferably through an angle of at least 180°, to an inverted non-harvesting position for road travel in which the outer harvesting mechanisms on the pivotable frames are inverted and above the harvesting mechanisms mounted on fixed frame 32 or trough 28 (FIG. 3) .
  • Extension of cylinders 34 and 34' reverses the action of contraction and reforms the corn head to harvesting position.
  • Folding of the corn head requires hinged separation and subsequent re-mating of the lower members 44 and 46 of the fixed frame 32 and pivotable frame 34, respectively.
  • the principal force holding the pivotable frame in operating position during harvesting comes from cylinder 35 operating through bridging linkage 40.
  • This force is exerted at the top 37 of the pivotable frame, and thus there is mechanical disadvantage in this being the sole force keeping lower members 44 and 46 matably engaged during operation of the harvester.
  • the force is exerted only in plane 43 containing cylinder 35 and hinge 42. Torsional forces about an axis 45 orthogonal to the rotational axis of hinge 42, as can be generated during operation of the harvester in a field, are not well resisted by the closing force in plane 43 and can bend the frames and damage the harvester.
  • main auger section 44 is a section of auger 22 shown in FIG. 1 between circles 46 and 46', and main trough section 48 is a section of trough 28.
  • Pivotable frame 34 contains a trough section 43 terminated and supported by an end plate 45 attached to frame 34, and a stub auger section 50 which is also a section of auger 22.
  • Auger 50 includes a helical flange 52 and a central hollow tube 54 containing a plurality of internal spacers 55.
  • a stub shaft 56 extends through end plate 45 and is rotatably and inflexibly journalled in bearings 58 mounted on plate 45.
  • stub shaft 56 is adapted to be driven by a sprocket 60 connected by an endless chain 62 to a drive sprocket 64 turned by, preferably, a hydraulic motor 66.
  • Auger section 50 is cantilever mounted on shaft 56 which extends therethrough and is fixed as by pins or keys to auger 50.
  • a latch mechanism 68 of known design preferably including an electrical solenoid slug, can secure the pivotable portion of the corn head to the fixed portion thereof in harvesting position.
  • the latch mechanism described in connection with FIGS. 11-15 preferably and is provided in accordance with this invention.
  • FIGS. 4 through 6 A preferred embodiment having pivotable stub augers at both ends of the main auger section is shown in FIG. 9.
  • a first circular plate or disk 74 having coupling features including a male axial centering cone 75 and at least one non-axial pin 76.
  • three pins of differing diameters and/or lengths are triangularly disposed, preferably non-symmetrically, about cone 75 so that auger sections 50 and 44 can mate and lock to form auger 22 in only one relative rotational orientation between them, preferably so that the ends of the helical flanges on each section meet to form a continuous flange.
  • Disk 74 projects slightly from the bore of section 44 and is provided with a chamfered periphery or male cone 78 to assist in re-connection of the auger sections as described hereinbelow.
  • a second circular plate or disk 80 slidably mounted on the figured inboard end of stub shaft 56.
  • the end portion of the shaft is provided with a figured cross-section, for example a polygon such as a hexagon and preferably as splines, which is matable with a central aperture having the same figure in disk 80 so that disk 80 can slide freely on shaft 56 while being rotationally coupled to the shaft.
  • Disk 80 is urged against a retaining clip 82 in section 50 by a backing spring 84.
  • Disk 80 is provided with a plurality of non- axial bores 83, preferably three, matable with non-axial pins 76 in disk 74.
  • stub shaft 56 The end face of stub shaft 56 is provided with a female centering cone 86 matable with male cone 75 to re-center the auger sections during re-connection thereof. Within cone 86 is a recessed grease nipple 88 by which lubrication may be provided via channel 90 for axial movement of disk 80 on shaft 56. End 70 is also provided with an outer female cone 92 matable with chamfered periphery 78 in re-connection of the auger sections.
  • main auger section 44 in harvesting position is supported solely at its ends by the coupling mechanism just described and a mirror-image mechanism at the opposite end thereof.
  • the pivotable frames are disconnected at latch 68 and pivoted into non-harvesting position, the main auger section, being otherwise unsupported, drops into the trough a distance of preferably about one-half inch and lies there until subsequent reassembly of the trough.
  • the re-connection pivoting of the frames engages first the outer cones 78 and 92 (FIG. 5) . Further motion of the frame drives cone 78 into cone 92, lifting the end of the main auger section from the trough and engaging centering cones 75 and 86.
  • a single large male cone 98 in disk 74 cooperates with a single large female cone 100 in a slidable disk 101 similar to disk 80 to engage and lift main auger section 44, and to axially align the auger sections .
  • This embodiment provides a continuous auger tube in harvesting position without a female cone projecting above the surface of the tube as in the first embodiment.
  • the choice of location for male and female features is arbitrary and in general may be reversed at the will of the designer.
  • the main auger section may be too heavy to be readily lifted by centering cones in either of the coupling embodiments as described hereinabove.
  • a fixed support to the main auger section may be provided to prevent its descent into the trough at decoupling. This may be done within the scope of the invention by providing support means at the center of the main auger section at exit 21. Since corn ears are not required to travel past the centerpoint of the auger, a completely obstruction-free path for the ears is still provided.
  • a strut 104 attachable to frame 32 or other mounting element extends downward therefrom.
  • a main auger idler stub shaft 106 extends therethrough and is rotationally and inflexibly journalled in bearings 108. Left and right portions 110 and 110' of main auger section
  • the auger sections are rotationally fixed to the shaft as by pins or bolts (not shown) .
  • FIGS. 12 through 15 A preferred embodiment of a latch 48 for keeping members 44 and 46 matably engaged is shown in FIGS. 12 through 15, wherein FIGS. 12-16 shows a progressive series between fully latched (FIG. 13) and fully unlatched (FIG. 15) .
  • the elements of the latch are shown disposed within the pivotable outer frame 34, although the latch could alternatively be disposed within fixed frame 32 with equal operability.
  • FIGS. 13 through 16 some elements realistically drawn in FIG. 12 are shown only schematically in FIGS. 13 through 16.
  • An actuator in the form of a pin 50 is slidably retained in pin mount 52 and is disposed for operation through a first aperture 54 in lower pivotable frame member 46. Pin 50 may be near or included in hinge rotation plane 43.
  • a crank 56 is pivotably disposed on crank mount 55 attached to frame member 46.
  • Crank 56 has first and second lever arms 58 and 60, respectively.
  • Pin 50 engages first lever arm 58.
  • a catch 62 is pivotably disposed on catch mount 63 which is attached to frame 46, the catch being rotatable about an axis 57.
  • Catch 62 extends beyond frame member 46, preferably at a distance from plane 43, through a second aperture 66 in member 46 and has a shaft 67 which terminates in a hook 68.
  • Catch 62 is preferably an "overcenter" catch, as shown in detail in FIG.
  • top-dead center being defined as the angular direction 59 on catch 62 from catch axis 57 orthogonal to latching surface 70 of lower fixed frame member 44.
  • Catch 62 is shown in FIG. 16 in both the open (solid lines) and closed (phantom) positions. The overcenter nature of the catch allows the catch to engage the lower fixed member from the rear and urge it toward the lower pivotable member even though the catch be pivoted from the opposite side of the lower fixed member.
  • Connecting link 64 is pivotably connected to second arm 60 and catch 62, such that rotation of crank 56 causes opposite sense rotation of catch 62.
  • Coil spring 65 biases the latch in the open position.
  • Lower member 44 of fixed frame 32 is provided with a slot 69 which can matably accept shaft 67 and hook 68 therethrough and has a latching surface 70 on an inner surface thereof.
  • actuating linkage can be used to actuate catch 62 in place of the pin, crank, and connecting link described above.
  • a pivoting lever can be used to actuate catch 62 in place of the pin, crank, and connecting link described above.
  • shaft 67 and hook 68 are extended through slot 69.
  • Fixed frame member 44 engages pin 50.
  • Further pivoting of member 46 engages and displaces pin 50 axially, causing crank 56 to rotate counterclockwise, which in turn causes catch 62 to rotate clockwise, causing lip 72 of hook 68 to engage latching surface 70.
  • the lengths of all lever arms and links, as well as the angles therebetween, and the length of shaft 67 are selected in accordance with known mechanical principles such that the motion of lip 72 and member 44 toward member 46 mimics the axial motion of pin 50.
  • pin 50 is fully depressed and catch 62 is fully engaged with surface 70, firmly latching pivotable frame 34 to fixed frame 32 as shown in FIG. 12
  • Opening the latch is the reverse of closing.
  • the closing force of cylinder 35 is reversed to an opening force, the catch is withdrawn from engagement with lower fixed member 44 in synchrony with axial movement of the pin 50 as urged by spring 65.
  • the catch 62 is a secondary lever wherein the point of attachment of link 64 lies between pivot axis 57 and lip 72, causing catch 62 to rotate clockwise to latch.
  • catch 62 is a primary lever wherein the pivot axis lies between the point of attachment and the lip, and the catch is caused to rotate counter-clockwise to latch.
  • the hook and latching surface are reversed and are located to the left of top-dead center, rather than to the right as in the first embodiment.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)

Abstract

L'invention se rapporte à un bec cueilleur à maïs pliable (10) dont les tronçons de la vis transporteuse (44, 48, 50), pouvant s'accoupler et se séparer, sont suspendus en porte à faux à partir des extrémités du bec cueilleur afin de créer une voie d'acheminement sans engorgement pour les épis de maïs récoltés, transportés par la vis. Des sections extérieures du bec cueilleur peuvent se plier verticalement autour d'articulations horizontales afin de réduire la largeur du bec lorsque la machine se déplace sur la route. Des tronçons de la vis transporteuse sont montés en porte à faux à partir des plaques terminales des sections pivotantes externes du bec cueilleur, au moins un des tronçons étant commandé par un actionneur tel qu'un moteur hydraulique (66). Les tronçons sont pourvus d'éléments d'accouplement aux extrémités du tronçon principal de la vis transporteuse. Un élément d'encliquetage (48) enclenche une partie pivotante (34) du bec cueilleur pliable (10) dans une partie fixe (32) de ce dernier, l'élément d'encliquetage étant actionné pour se fermer ou s'ouvrir lors du pliage des parties du bec cueilleur.
PCT/US1996/020834 1996-01-04 1996-12-30 Bec cueilleur a mais pliable a transporteur a vis sans engorgement WO1997024919A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16895/97A AU1689597A (en) 1996-01-04 1996-12-30 Foldable corn head with unobstructed auger

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/582,687 1996-01-04
US08/582,687 US5673543A (en) 1996-01-04 1996-01-04 Foldable corn head with unobstructed auger
US08/680,503 US5724798A (en) 1996-07-08 1996-07-08 Latch for a folding corn head
US08/680,503 1996-07-08

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Cited By (8)

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EP1021944A1 (fr) * 1999-01-21 2000-07-26 Capello F.Lli Renato E Francesco S.N.C. Tablier de coupe pour moissonneuse-batteuse
EP2446729A1 (fr) * 2010-10-27 2012-05-02 Olimac S.r.l. Appareil pour récolter le mais
CN104969721A (zh) * 2015-07-02 2015-10-14 济南大学 可折叠的玉米割台及其对接机构
CN106258222A (zh) * 2016-10-17 2017-01-04 济南大学 一种割台折叠机构
CN107318366A (zh) * 2017-07-19 2017-11-07 济南大学 一种新型用于割台的绞龙机构
CN111115131A (zh) * 2018-10-30 2020-05-08 凯斯纽荷兰(中国)管理有限公司 折叠螺旋输送器联接机构
WO2020101871A1 (fr) * 2018-11-16 2020-05-22 Cnh Industrial America Llc Collecteur à cadre rigide modulaire
US20210386016A1 (en) * 2020-06-10 2021-12-16 Deere & Company Harvesting machine having a frame coupling system

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
EP1021944A1 (fr) * 1999-01-21 2000-07-26 Capello F.Lli Renato E Francesco S.N.C. Tablier de coupe pour moissonneuse-batteuse
EP2446729A1 (fr) * 2010-10-27 2012-05-02 Olimac S.r.l. Appareil pour récolter le mais
CN104969721A (zh) * 2015-07-02 2015-10-14 济南大学 可折叠的玉米割台及其对接机构
CN106258222A (zh) * 2016-10-17 2017-01-04 济南大学 一种割台折叠机构
CN107318366A (zh) * 2017-07-19 2017-11-07 济南大学 一种新型用于割台的绞龙机构
CN111115131A (zh) * 2018-10-30 2020-05-08 凯斯纽荷兰(中国)管理有限公司 折叠螺旋输送器联接机构
CN111115131B (zh) * 2018-10-30 2022-03-25 凯斯纽荷兰(中国)管理有限公司 折叠螺旋输送器联接机构
WO2020101871A1 (fr) * 2018-11-16 2020-05-22 Cnh Industrial America Llc Collecteur à cadre rigide modulaire
US20220007577A1 (en) * 2018-11-16 2022-01-13 Cnh Industrial America Llc Header with modular rigid frame
US20210386016A1 (en) * 2020-06-10 2021-12-16 Deere & Company Harvesting machine having a frame coupling system

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