US20020077162A1 - Replacing concave inserts for a rotary combine - Google Patents
Replacing concave inserts for a rotary combine Download PDFInfo
- Publication number
- US20020077162A1 US20020077162A1 US09/963,615 US96361501A US2002077162A1 US 20020077162 A1 US20020077162 A1 US 20020077162A1 US 96361501 A US96361501 A US 96361501A US 2002077162 A1 US2002077162 A1 US 2002077162A1
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- Prior art keywords
- concave
- frame
- rotor
- insert
- shaft
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Links
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- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 238000003306 harvesting Methods 0.000 description 5
- 230000013011 mating Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 230000003467 diminishing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 1
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- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/26—Multi-part threshing concaves
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/28—Devices for adjusting the concaves
Definitions
- the present invention relates generally to a concave assembly for a rotary combine, and in particular, to an adjustable concave assembly having removable concaves.
- agricultural combines are well know in the art for harvesting and threshing a number of various agricultural crops, including for example corn, wheat, soybeans, etc.
- agricultural combines include a harvesting apparatus, an infeed mechanism and a separating apparatus.
- the harvesting apparatus reaps the crop, which is planted in the ground, with the infeed mechanism thereafter feeding the crop to the separating apparatus.
- the separating apparatus in a rotary combine includes a rotor, which can extend axially or transversely within the body of the combine, and which is surrounded at least in part by a perforated cage having a plurality of apertures.
- the cage can include a series of concaves arranged in a side-by-side configuration, with each concave extending partially circumferentially around the rotor.
- concaves wherein the spacing between the concaves and the rotor can be altered to provide for the threshing of different crops in different conditions.
- concaves typically are easily and readily adjustable only along one end thereof, and are adjustable only with relative difficulty at the other end, which is typically pivotally attached.
- the adjustment of the concaves can be time consuming, which can lead to compromises in reaching optimum settings.
- the user may desire to select the size and shape of the apertures defined by the concave such that the concave is suitable for harvesting a different crop having a smaller or larger grain. It may also be desirable to replace a concave if, for example, one or more of the concaves becomes damaged by the introduction of a foreign object, such as a rock, between the rotor and the concave.
- Concaves arranged in a side-by-side configuration can be removed sideways from the combine in a direction transverse to the longitudinal extent of the rotor, as illustrated for example in U.S. Pat. No. 3,871,383.
- concaves include a heavy integral frame designed to withstand the substantial forces imparted by the threshing operation.
- concaves typically are of a robust construction, which can thereby lead to the concaves being relatively heavy and difficult to handle.
- each concave typically spans the entire circumferential span of the threshing area defined around the rotor, which typically is on the order of about 120 to 130 degrees measured around the axis of the rotor. The relatively large size and weight of the concaves associated with this span further contribute to difficulties with the handling and installation thereof.
- one aspect of the invention is directed to an improved rotary combine having a rotor with a longitudinal axis of rotation and a support structure disposed adjacent the rotor.
- a longitudinally extending frame has first and second sides spaced circumferentially around the rotor. Each of the first and second sides is moveably mounted to the support structure such that each of the sides is moveable relative to the support structure in a transverse direction.
- a concave insert is removably mounted to the frame, with the concave insert being removable therefrom in an outward, transverse direction.
- first and second sides of the frame are pivotally connected to a first and second shaft respectively.
- a first and second arm extend radially from the first and second shafts respectively.
- a link has a first end pivotally connected to the second arm and a second end pivotally connected to the second side of the frame.
- the first arm is pivotally connected to the first side of the frame.
- a first and second concave each have a first and second end spaced circumferentially around the rotor respectively.
- the first end of each of the first and second concaves are releasably mounted to a frame.
- at least one of the first and second concaves is pivotally mounted about a pivot axis, which axis is substantially parallel to the longitudinal axis of rotation of the rotor and is spaced circumferentially around the rotor.
- both of the first and second concaves are pivotally mounted about a first and second pivot axes respectively, with both axes being substantially parallel to the longitudinal axis of the rotor and spaced circumferentially around the rotor.
- the first and second concaves are outwardly pivotable about the first and second pivot axis respectively in opposite directions relative to each other.
- the rotary combine in another aspect of the invention, includes a longitudinally extending frame having at least a first and second rib member extending transversely between the first and second side of the frame.
- the first and second rib members are longitudinally spaced apart and define an opening therebetween.
- Each of the first and second concave inserts is dimensioned to be removed from the first and second sides of the frame through the opening in a transverse direction.
- a concave is releasably and pivotally mounted about a pivot axis substantially parallel to the axis of rotation of the rotor.
- a locking member is pivotable between an engaged position, wherein the locking member engages a first end of the concave, and a disengaged position, wherein the locking member is disengaged from the first end of the concave.
- the first end of the concave includes a pivot shaft and the locking member comprises a hook member that engages the pivot shaft.
- the support structure includes an upper portion having two intersecting, inclined surfaces.
- the upper portion defines and/or supports a floor of a grain bin thereabove.
- a method for replacing a concave in a rotary combine having at least a first and second concave each with a first and second end spaced circumferentially around the rotor respectively.
- the first ends of each of the first and second concaves are releasably mounted to the frame.
- at least the first end of the first concave is pivotally mounted about a pivot axis.
- the first end of each of the first and second concave are pivotally mounted about parallel first and second pivot axes respectively.
- the method includes pivoting the first concave in an outwardly, transverse direction about a first pivot axis and disengaging a first end thereof from the support structure.
- the method further includes engaging a first end of a replacement concave with the support structure and pivoting the replacement concave about the first pivot axis in an inwardly, transverse direction.
- a method for replacing a concave insert in a rotary combine includes removing the concave insert through an opening defined between a first and second rib member of a frame. A replacement concave insert is thereafter inserted through the same opening.
- a concave assembly having a first and second side both moveable in a transverse direction, and preferably including movement in a transverse lateral direction allows for a quick and easy adjustment of the concave relative to the rotor, and also provides the user with more flexibility in controlling the space between the concave assembly and the rotor.
- the concave assembly can also be rotated independently thereof so as to maintain a desired spacing between the rotor and concave assembly along the entire circumferential span of the concave assembly. In this way, the user can better control the pinching that can occur between the concave and the rotor.
- the concave inserts which are removably mounted thereto, can be made with smaller and lighter structure, since the concave insert is not alone required to carry the loads applied by the threshing operation. Rather, that function primarily is left to the underlying frame. Accordingly, the concave inserts can be made lighter and therefore can be more easily handled and manipulated by the user. Similarly, by providing at least a first and second concave insert defining the circumferential span of the concave assembly, both the size and weight of the concave inserts can be greatly reduced, so as to again facilitate the removal and replacement thereof.
- the overall combined circumferential span of each of the at least first and second concave inserts can be increased.
- the combined threshing span can be approximately 180 degrees, with each of a first and second concave insert each having a span of approximately 90 degrees.
- the overall threshing area of the concave assembly can be increased without increasing the size and weight of the concave inserts, and the attendant difficulty in the handling thereof.
- the size and weight of each concave insert can actually be reduced, while at the same time increasing the overall circumferential span of the concave assembly.
- the frame allows for the easy removal and installation of concaves in a direction transverse to the axis of rotation of the rotor, for example, from the side of a combine having an axially extending rotor.
- the user can easily install one or more concaves as needed, without disturbing the position of the remaining concaves.
- a first and second concave can be releasably attached at circumferentially spaced ends, so as to thereby allow the user to remove one or more of the concaves in an outwardly transverse direction without disturbing the other of the concaves.
- the pivotable locking member allows the user to quickly and securely engage and disengage at least one end of the concave.
- the support structure with its inclined upper surfaces also provides significant advantages.
- the construction of the support structure provides increased structural strength and stability, while at the same time providing a inclined floor for the grain bin, which can facilitate the emptying thereof.
- FIG. 1 is a perspective view, partially broken away, of an agricultural rotary combine.
- FIG. 2 is a partial side view of a separating apparatus for a rotary combine.
- FIG. 3 is a right side perspective view of a concave assembly supported by a support structure.
- FIG. 4 is a partial left side perspective view of the concave assembly and support structure shown in FIG. 3.
- FIG. 5 is a bottom view of the concave assembly and support structure shown in FIG. 3.
- FIG. 6 is an enlarged, partial left side perspective view of the concave assembly and support structure shown in FIG. 3.
- FIG. 7 is a right side perspective view of the frame and support structure shown in FIG. 6.
- FIG. 8 is a right side perspective view of the frame and support structure of FIG. 7 with a pair of concave inserts positioned in a side-by-side configuration.
- FIG. 9 is a right side perspective view of the frame and support structure of FIG. 7 with a pair of concave inserts positioned in an end-to-end configuration.
- FIG. 10 is a perspective view of a concave insert.
- FIG. 11 is an enlarged, partial end view of the concave assembly and support structure shown in FIG. 3.
- FIG. 12 is a right side perspective view of an alternative embodiment of a concave assembly supported by a support structure.
- FIG. 13 is an enlarged, partial perspective view of the concave insert shown in FIG. 12 being secured to the frame.
- FIG. 14 is an end view of an alternative embodiment of a concave assembly supported from an alternative embodiment of a support structure with a locking device in an engaged position.
- FIG. 15 is an enlarged, partial end view of the locking device shown in FIG. 14 with the locking device in a disengaged position.
- FIG. 16 is a partial perspective view of an alternative embodiment of a pair of concave inserts.
- FIG. 17 is a partial perspective view of an alternative embodiment of a pair of concave inserts.
- FIG. 18 is a partial section cut of the support structure, concave assembly, rotor and grain tank taken along line 18 - 18 in FIG. 2.
- FIG. 19 is a partial section cut of the support structure, concave assembly, rotor and grain tank taken along line 19 - 19 in FIG. 18.
- FIG. 20 is a left side perspective view of an alternative embodiment of the frame and support structure.
- FIG. 21 is a perspective view of an alternative embodiment of a right side concave insert.
- FIG. 22 is a perspective view of an alternative embodiment of a left side concave insert.
- FIG. 23 is a perspective view of a support frame for the separating grates.
- FIG. 24 is a perspective view of an alternative embodiment of a left side grate insert.
- FIG. 25 is a perspective view of an alternative embodiment of a right side grate insert.
- FIG. 26 is a right side perspective view of the concave assembly with covers disposed thereabove.
- FIG. 27 is a right side perspective view of the support structure, rotor, frame and covers.
- FIG. 1 shows a conventional self-propelled rotary combine 10 that includes a body or housing 12 defining an internal open area or space 13 .
- the body which can include a supporting frame, is supported on front drive wheels 14 and steerable rear wheels 16 .
- the combine is powered by an engine (not shown) and controlled from an operator's station 18 .
- a crop harvesting apparatus 20 otherwise referred to as a header, and an infeed mechanism 22 are attached at a forward end of the combine.
- the infeed mechanism 22 feeds crop materials to a rotor assembly 24 enclosed within the housing.
- One example ova rotary combine configured with a rotary assembly is disclosed in U.S. Pat. No. 5,489,239, which issued Feb. 6, 1996 to Case Corporation, the same assignee as the present application, and which is hereby incorporated herein by reference.
- the rotor assembly 24 is preferably configured as a single axial unit that threshes and separates crop materials presented thereto into grain and other materials.
- the rotary combine could be configured with more than one rotary assembly, for example, with two units arranged in a parallel configuration.
- the rotor assembly 24 is mounted in the internal area 13 defined by the housing 12 and includes a rotor 28 with a longitudinal extent rotatably mounted to the housing about a longitudinal axis of rotation 30 , which extends axially along the length of the combine. It should be understood that the term longitudinal means of or relating to length or the lengthwise dimension.
- the rotor with its longitudinal extent could be mounted within the housing so as to extend laterally from side-to-side within the combine.
- the terms “left side,” “right side,” “left,” “right,” “front,” “rear,” “upper,” “lower,” “top,” and “bottom,” and their derivatives, as used herein are intended to indicate directions relative to the views presented in the Figures, and in particular, from a perspective when viewing the rotary combine from the operator's position in the rotary combine.
- the crop materials is threshed as it spirals around the rotor 28 against a threshing cage disposed partially, circumferentially around the rotor.
- the rotor can be dimensioned with a broad range of diameters, depending on the desired size and performance characteristics of the combine.
- suitable rotors may have a diameter in the range of 15 inches to 30 inches, although it should be understood that other diameters, larger and smaller, would also work for the purposes of this invention.
- the rotor is configured with suitable instrumentalities 25 , as shown for example in FIGS.
- the threshing cage includes various semi-cylindrical concaves 34 and grates 36 provided along a lower arcuate portion of the cage.
- the rotor 28 is preferably made of steel, and is generally rotated at speeds of between 150 to 1500 rpm, depending on the type of crop being threshed, and the conditions under which the threshing is being performed. It should be understood, however, that the rotor speed is not critical to the operation of the invention, and that other rotor speeds, faster and slower, may be desired and suitable for the purposes of the present invention without detracting or departing from the scope thereof.
- the concaves 34 and grates 36 each have a plurality of apertures that allow the grain to be separated from the other crop materials as the grain passes through the apertures. Most of the grain drops onto a grain pan 38 . The grain is thereafter conveyed rearward from the grain pan 38 by an auger mechanism 40 for subsequent cleaning and collection. Straw, tailings and other waste crop material are impelled rearwardly out of the discharge end of the rotor assembly where a rotary beater throws the straw and other waste material rearwardly from the combine.
- the combine 10 further includes a cleaning system for cleaning chaff, straw, tailings and other foreign material from the grain.
- the cleaning system can include a cleaning fan 44 , a chaffer sieve 46 , a grain sieve 48 and a clean grain collector 50 .
- a suitable auger mechanism 52 directs clean grain from the collector 50 into a hopper or grain bin. It should be understood that other cleaning systems would be suitable for the purposes of the present invention without detracting or departing from the scope thereof.
- the concave assembly preferably includes a frame 60 and a plurality of concave inserts 80 , shown in the preferred embodiment as six concave inserts.
- the support structure 100 includes a pair of upper rails 102 extending longitudinally along opposite sides of the rotor, and a pair of lower rails 104 extending longitudinally along opposite sides of the rotor beneath the upper rails.
- the rails 102 have a Z-shape, and include an inwardly extending upper flange 108 , an outwardly extending lower flange 110 , and a vertical web 112 connecting the upper and lower flanges.
- the lower rails 104 are attached to a floor of the body 12 with a plurality of fasteners, such as bolts, or by welding and the like.
- a plurality of support legs 106 connect the upper and lower rails. The support legs 106 are attached to the upper and lower rails 102 , 104 by welding, or with fasteners and the like.
- a series of transversely extending bulkheads 114 are longitudinally spaced along the top of the upper rails.
- the bulkheads 114 extend between and connect the upper rails 102 .
- the bulkheads 114 are further attached to the bottom of the grain tank 402 , shown in FIGS. 18 and 19.
- the bulkheads 114 are preferably made of steel, and are attached to the upper rails 102 by welding or with fasteners.
- the bulkheads 114 each include a pair of inclined upper edges 116 , and a lower arcuate-edge 118 , which includes a semi-cylindrical flange that extends partially, circumferentially around the rotor 28 disposed therebelow.
- the upper edges 116 of the bulkheads support a floor 404 of a grain bin disposed thereabove, as shown for example in FIGS. 18 and 19.
- the inclined edges 116 are each formed at an angle of about 40 degrees to the vertical, although it should be understood that other angles would also work.
- the bulkhead includes a support web 120 extending between the upper and lower edges.
- a spine member 122 extends longitudinally along the length of the support structure and connects a center top portion of the bulkheads.
- the spine 122 is preferably made of steel and is secured to each of the bulkheads by welding and/or fasteners.
- a forward portion of the spine is comprised of two frame members that extend downwardly from the upper portion of the forwardmost bulkhead to a plate member attached to the end of each upper rail.
- sheet members 1024 are installed on top of the bulkheads.
- a series of arcuate, semi-cylindrical covers 124 extend between and connect the lower portions 118 of the bulkheads and prevent the grain and other crop materials from getting into the space defined thereabove as those materials are threshed and rotated with the rotor 28 .
- the support structure includes a truss 204 overlying the rotor.
- the truss includes a pair of upwardly inclined and intersecting upper surfaces 216 , which support and help define a floor of the grain bin formed thereabove.
- a lower portion 218 of the truss extends partially circumferentially around the rotor.
- the upper surfaces 216 and lower portion 218 are connected with a plurality of support members 220 extending therebetween.
- modified Z-shaped rails 202 with an upper flange or web 208 , lower flange 210 , vertical web 212 and an additional upstanding flange 214 connect the upper and lower portions 216 , 218 along a lower end of the truss.
- the truss can extend longitudinally along the length of the rotor, with the upper and lower portions and connecting support members each extending therealong.
- a series of transversely extending trusses can be longitudinally spaced along the rotor in an overlying relationship thereto, with only the upper rails 202 extending longitudinally along the rotor.
- lower cover members can be provided to extend between and connect the lower portions of the trusses.
- the spaces formed between the upper and lower portions 216 , 218 , and between the support members 220 provides an ideal, protected location for passing utilities 221 , such as conduit, fluid lines, cables, wiring and the like, between the front and back of the combine.
- utilities 221 such as conduit, fluid lines, cables, wiring and the like
- openings can be provided in the bulkheads referenced above to provide passage for these utilities.
- These various utilities can be easily attached and supported by the support structure with various clips and the like, which can be fastened, for example, to the support members or to the web of the bulkheads.
- the support structure further includes a first and second pivot shaft 126 , 128 , otherwise referred to as rock shafts, extending longitudinally beneath the upper rails 102 on opposite sides of the support structure, with the pivot shafts circumferentially spaced around the rotor 28 .
- Each pivot shaft 126 , 128 defines respectively axes 130 , 132 of rotation that are substantially parallel to the axis 30 of rotation of the rotor and to each other.
- Each pivot shaft preferably formed as a tube, is rotatably supported by a series of bearing supports 134 , which in turn are attached to either to a bottom of the flange 108 of the respective upper rail 102 with a bracket 136 , or to the end of the rail, which includes a plate member 138 attached thereto.
- the shaft alternatively can be configured as a solid axle, or can be comprised of a plurality of shorter support pins spaced longitudinally along the support structure.
- the first shaft 126 which rotates on the right side of the rotor 28 , is supported at four points, while the pivot shaft 128 on the left side is rotatably supported at two points.
- a plurality of longitudinally spaced crank arms 140 extend radially from the first pivot shaft 126 .
- Three of the crank arms 140 are dual crank arms having two arm members forming a space therebetween for receiving a mating member.
- the rearwardmost crank arm preferably includes only a single arm member. It should be understood that any or all of the crank arms could be configured with single or dual arm members.
- the crank arms 140 extend radially downward from the first pivot shaft 126 in a substantially, vertical direction.
- a plurality of longitudinally spaced dual crank arms 142 (shown as two) extend radially from the second pivot shaft 128 .
- crank arms 142 extend radially inward from the pivot shaft 128 in a substantially horizontal direction.
- a plurality of link members 144 (shown as two) each include a first and second end 146 , 148 , with the first end 146 pivotally connected to an end 152 of the crank arm 142 with a pin or like member. It should be understood that the number of crank arms and bearing supports could be increased or decreased as desired.
- the forward most link member 444 includes a bracket member 446 adjustably connected with an adjustment member 448 .
- the adjustment member 448 is formed as a bolt, which threadably engages the bracket member.
- the adjustment member can be actuated by rotation to adjust the frame up or down along the length of the adjustment member, which preferably extends in a substantially vertical direction.
- the frame 60 , 460 of the concave assembly extends longitudinally and has first and second sides 62 , 64 , 462 , 464 spaced circumferentially around the rotor.
- the first and second sides 62 , 64 , 462 , 464 preferably are spaced between about 160 degrees to about 190 degrees relative to each other, and more preferably at about 180 degrees, although it should be understood that the sides can be spaced at lesser angles, e.g., 120 degrees, or even less.
- the frame 60 , 460 includes a plurality of rib members 66 , 466 extending transversely between the first and second sides 62 , 64 , 462 , 464 of the frame.
- the rib members 66 , 466 are arcuate shaped with an upper arcuate edge 174 preferably having a radius substantially the same as or slightly greater than the radius of the rotor. More preferably, the upper peripheral edge of the right half of the rib member has a slightly larger arc than the upper peripheral edge of the left side, with the right hand and left hand arcs therefore having slightly different radii.
- the rib members 66 , 466 are longitudinally spaced and form a series of openings 70 between successive rib members.
- the four rib members 66 , 466 form three openings 70 therebetween, each of which is further subdivided into two sub-openings by a longitudinally extending frame member 68 , 468 , which extends between the rib members 66 , 466 along a central intermediate portion thereof between the first and second sides of the frame.
- a longitudinally extending frame member 68 , 468 which extends between the rib members 66 , 466 along a central intermediate portion thereof between the first and second sides of the frame.
- more or less rib members could be used to define more or less openings therebetween, depending on the number of concave inserts to be supported by the frame.
- Each frame member 68 includes a pair of holes 72 formed therein and a support member 74 , formed as a block, attached to both sides thereof with a pair of fasteners along a bottom edged thereof.
- the support member 74 provides a rest or support for an end of a concave insert while it is being installed and before any securing fasteners are secured.
- the forwardmost rib member 66 , 466 abuts a forwardly extending and downwardly inclined flange 76 formed on the support structure which cooperates with the infeed mechanism to prevent grain from escaping through the space formed therebetween.
- Each rib member 66 includes a first and second end 160 , 162 , each of which includes an outwardly extending lower lug 164 , 166 having an opening 168 , 170 therethrough.
- the lower lugs 164 and 166 are attached respectively to the crank arm 140 and link 144 at openings 168 and 170 , respectively.
- Each lower lug 164 , 166 is downwardly displaced with respect to a top portion 172 , 174 of the end of the rib member, with the lug 164 on the end 160 preferably being more displaced than the lug 166 on the other end 162 , such that as the frame 60 is translated, as more fully explained below, the geometry of the lugs 164 , 166 and openings 168 , 170 permits the concave assembly to maintain the proper cooperative relationship with the rotor. In an exemplary embodiment, it is desirable to maintain the concave assembly a radially spaced distance of from about 0 to about 2 inches, although it should be understood that greater distances may also be desirable in certain applications.
- the rotor 30 which rotates counterclockwise when viewing it from the front looking back, introduces the crop material into a larger gap at the right side of the concave with the gap gradually diminishing between the rotor and concave from right to left.
- a pivot member 178 preferably configured as a shaft or axle, extends longitudinally through each end of the rib members 160 along a first side 62 of the frame, while a pivot member 180 , also preferably configured as a shaft or axle, extends longitudinally through each end 162 of the rib members along a second side 64 of the frame.
- the pivot members 178 , 180 are connected with each rib member 66 adjacent a top portion of each end 160 , 162 thereof above the lug members 164 , 166 .
- An upwardly extending Z-shaped sealing bracket 182 which extends longitudinally along the frame, is mounted to the end 162 of the rib members.
- the sealing bracket 182 includes an upwardly extending flange 184 , which cooperates with the lower edge of the cage assembly or the cover attached to the support structure to close the gap between the frame and the support structure, so as to prevent grain from escaping through the space formed therebetween.
- each rib member 466 includes a first and second end 560 , 562 .
- the first end 560 includes an outwardly extending lower lug 564 having an opening 468 therethrough.
- the lower lug 564 is downwardly displaced with respect to a top portion 572 of the end of the rib member.
- a pivot member 578 preferably configured as a shaft or axle, extends longitudinally through each end of the rib members 560 along a first side 462 of the frame.
- the pivot member 578 is connected with each rib member 466 adjacent the top portion 572 of end 560 above the lug member 564 .
- an upwardly extending Z-shaped sealing bracket 582 On the second side 464 , an upwardly extending Z-shaped sealing bracket 582 , with flanges 584 and 590 connected with web 592 which extends longitudinally along the frame, is mounted to the end 562 of the rib members.
- the lower end of the links 144 and 444 are attached to lugs extending from or through the bracket 582 .
- a dual crank arm 186 is attached to and extends radially from an end of the pivot shaft 126 .
- a dual crank arm 188 extends radially from an end of pivot shaft 128 .
- a first and second actuator 190 , 192 are operably engaged with the crank arms 186 , 188 respectively so as to effect a rotation of the pivot shafts 126 , 128 respectively.
- An exemplary actuator mechanism is shown in U.S. Pat. No. 5,489,239, which was referred to above, and which has been incorporated herein by reference.
- crank arms 186 , 188 can be manipulated or actuated by any number of conventional and well-known systems, including pneumatic and hydraulic cylinders, worm gears, racks, threaded members, turnbuckles, servo devices, and the like.
- the actuators 190 , 192 are preferably linearly actuated to rotate the pivot shafts 126 , 128 .
- the end 150 of the downwardly extending crank arm 140 pivots about the pivot axis 130 and thereby moves the pivotally attached ends 160 of the rib members, or side 62 of the frame, and in particular, the point of pivotal attachment between the rib member and the crank arm, in a transverse, lateral direction.
- transverse means any direction, not necessarily linear, within the plane formed perpendicular to the longitudinal axis 30 of rotation of the rotor and the pivot axes of the pivot shafts 130 , 132 .
- the rotation of the first pivot shaft 126 and the attendant movement of the first side 62 of the frame also effects a transverse, lateral movement of the second side 64 of the frame as it pivots about the end 148 of the link member, which in turn pivots about the end of the crank arm.
- the rib members 66 , links 144 , crank arms 140 and support structure act as a 4-bar linkage which effects a transverse, translation of the frame member in a lateral direction relative to the rotor 28 . If the links 144 are not parallel, or of the same length as the arms 140 , the frame may also be slightly rotated as it is translated.
- crank arm 142 As the second crank arm 142 is independently rotated by actuator 192 and crank arm 188 , the end 152 of the crank arm 142 moves the link member 144 in a substantially transverse, vertical direction, which thereby moves the ends 160 of the rib members, or side 64 of the frame, in a vertical direction. It should be noted that this movement does not effect a similar movement of the other side of the frame, which cannot be moved vertically due to the direct pivotal connection with the crank arm 140 . Rather, the second side 64 of the frame is pivoted about the pivot point 168 or the connection between the first side 62 of the frame and the crank arm 140 .
- rotation of the pivot shaft 126 on the right side effects a transverse, lateral movement of the entire concave assembly, comprised of a primary translation component and potentially a small secondary rotation component, while a rotation of the pivot shaft 128 on the left side effects a pivoting of the concave assembly about the pivotal attachment of the frame 60 to the crank arm 140 .
- each concave insert 80 , 82 is arcuate shaped, with a circumferential span of approximately 90 degrees.
- the concave inserts 80 configured in a side-by-side relationship on the right side of the assembly preferably each have an arcuate shape defined by an upper concave surface of one profile, while the concave inserts 82 configured in a side-by-side relationship along the left side of the assembly preferably have an arcuate shape defined by an upper concave surface of another profile.
- the concave insert 80 on the right side has a slightly larger radius than the concave insert 82 on the left side, with both concave inserts 80 , 82 having radii slightly larger than the radius of the rotor.
- the rotor has a radius of about 18 inches
- the concave insert 80 has a radius of about 20.5 inches
- the concave insert 82 has a radius of about 20 inches. It should be understood that the radius of each individual concave insert also could be varied along the circumference thereof. Conversely, it should be understood that the concave inserts could also be made modular, with the same radius of curvature.
- the concave assembly includes six concave inserts, with three concave inserts arranged in a side-by-side relationship along each side of the concave assembly, and with each of the three concave inserts arranged side-by-side on the right side further arranged in an end-to-end relationship with the three concave inserts arranged side-by-side on the left side. It should be understood that more or less concave inserts could be arranged in both the longitudinal (side-by-side) direction and in the transverse (end-to-end) direction depending on the longitudinal extent or length of the frame and on its circumferential span or width.
- each concave insert 80 , 82 includes opposite transversely extending side frame members 84 or ribs, which terminate along one end in a downwardly extending hook portion 86 .
- Two intermediate frame members 88 also extend transversely along the circumferential span of the concave insert 80 , 82 .
- a plurality of longitudinally extending frame members 90 configured as bar member, extend between and are connected to the opposite side frame members 84 and intersect the intermediate frame members 88 .
- the lowermost frame member 92 which defines an end of the concave insert, includes at least a pair of openings 94 formed in a lower portion thereof.
- a curved bearing plate 96 extends longitudinally between and nests in the opposite hook portions 86 and forms itself a hook.
- a plate member 98 is secured to the uppermost frame member 54 with at least a pair of bolts 56 and includes a pair of slotted openings 58 opening outwardly along the bottom of the plate member.
- the concave inserts 80 , 82 also include a plurality of longitudinally spaced arcuate rods 32 that extend between the ends of the concave insert through the plurality of bar members below a top edge thereof. The spaces or openings formed between the rods, bar members and frame members form apertures through which the grain passes as the crop materials are threshed between the concave insert 80 , 82 and the adjacent, cooperating rotor 28 .
- the openings have a range of widths from about a 1 ⁇ 4 inch to about 3 ⁇ 8 inch and a length of from about 1 inch to about 11 ⁇ 2 inches, depending on the type of grain being threshed.
- the various concave insert components including the frames 84 , 88 , rods 32 , bearing plates and plates 98 , are preferably made of steel, although other materials would also work.
- the right side concave 80 further includes a pair of openings 700 formed about midway in the frame members 84 or ribs.
- the left side concave insert 782 is similar to concave insert 82 , but the frame members 784 do not terminate in a hook portion. Rather, a frame member 702 , formed as a plate, includes an outwardly extending flange 704 , which is preferably angled slightly from the end of the concave insert.
- a pair of posts or pins 706 each having a tapered or frusto-conical end portion 708 , extend from frame member 92 .
- the pins 706 are dimensioned to be received in the openings 94 formed in the end of the concave insert 80 .
- one of the concave inserts for example the right concave insert 80
- one of the concave inserts is introduced transversely through one of the subopenings 70 formed between one pair of rib members 66 making up the frame 60 .
- the hook portions 86 on the end of the concave insert, with its curved bearing plate 96 is disposed on the pivot member 178 so as to be pivotally engaged therewith.
- the opposite, lower end of the concave insert 80 is then pivoted about the pivot member 178 until the holes 94 in the lowermost plate member 92 are aligned with the holes 72 in the frame member 68 .
- the opposite side insert 82 can be similarly installed and pivoted about pivot member 180 into position, whereinafter a bolt or like fastener can be installed through each of the lower most plate members 92 and the frame member 68 to releasably secure the concave inserts 80 , 82 to the frame member 66 and to each other. During these operations, the lower ends of the concave inserts can be rested on the support member 74 to ease the load on the installer and to facilitate the installation of the inserts.
- the ends of the concave inserts can be individually secured to the plate member with fasteners.
- the longitudinally extending frame member is omitted, and the lowermost plate members abuttingly engage, whereinafter they can be fastened together with bolts, screws and the like.
- bolts or other like fasteners can also be installed through the side frame members so as to attach the side flanges to the adjacent rib members or to the side frame members of the next concave insert arranged along the side thereof. When installed, the upper arcuate edge of the frame members is substantially flush with the arcuate top edge 174 of the adjacent rib members 66 .
- a replacement concave insert 80 , 82 can thereafter be installed in the manner described above.
- the above configuration and sequence of installation greatly facilitates the removal and replacement of the inserts.
- the inserts can be made lighter, while at the same time providing for a larger overall threshing span.
- the circumferential span could be further divided by three, or even more, concave inserts, with additional concave inserts supported by the frame between the two concave inserts releasably mounted as described herein, but with their lower ends circumferentially spaced. In this way, the circumferential spans of the concave inserts could be reduced even more, thereby making them lighter and less bulky.
- the concave inserts can be made with smaller side frame members, thereby also making them lighter and more manageable for the user or installer.
- the transverse removal of the concave inserts from the side of the frame eases the burden of replacement as the insert can be accessed and replaced from the side of the combine, when configured with an axially extending rotor, without disturbing the installation of the other concave inserts.
- the right side concave insert 80 is installed first by pivotally engaging the pivot member 178 with hook portion 86 .
- the concave insert is pivoted into position and fasteners, preferably bolts, are installed though opening 470 in the frame rib member 466 and opening 700 in the concave insert frame member 84 .
- fasteners preferably bolts
- the openings 94 are aligned with the openings 72 formed in the frame member 468 .
- the left side concave insert 782 is installed by inserting the pins 706 through the openings 72 and into the openings 94 formed in the right side concave insert.
- the concave insert 782 is then pivoted into position.
- the end member 702 is then secured to the flange 590 of the bracket with fasteners.
- the concave insert 782 can be further secured to the rib members 466 with fasteners passing through openings 700 . It should be understood that the bolts securing the frame members 84 on either insert 80 and 782 are optional.
- FIGS. 16 and 17 alternative methods of connecting abutting concave inserts arranged in an end-to-end configuration are shown.
- the frame member 68 has been eliminated, or, the frame itself has been omitted, with the concaves being directly attached to the support structure.
- the term concave is meant to refer to a concave insert supported by a frame, or to a concave member that is directly secured to the support structure without a separate supporting frame.
- the lowermost end of one concave is configured with a longitudinally extending bottom hook portion 222 forming a channel opening upwardly along one end thereof.
- a pair of openings 224 are formed in the plate member above the hook portion.
- the lowermost end of the mating concave is configured with a pair of transversely extending post members 228 dimensioned to be received in the openings 224 of the plate member.
- the bottom edge 226 of the plate member is inserted into the channel of the hook portion 222 , while the post members 228 are received in the openings 224 .
- the interface of the abutting concaves reacts out the load through a moment applied by the bottom edge 226 of the plate member pulling on the hook portion, and an engagement between the upper portions of the abutting plates.
- the post members 228 engaged with the holes 224 further absorb the shearing loads applied between the concaves and maintain the engagement between the concaves.
- a longitudinally extending tongue portion 230 formed along one plate member engages a groove 232 on the mating plate member so as to absorb any shear load between the abutting concaves.
- the concave assembly does not include a supporting frame.
- the concave assembly includes a plurality of left and right side concaves 280 , 282 with side frame members each having lug portions 284 , 286 extending transversely from the uppermost ends thereof.
- a sealing bracket is attached to the end of the concave and includes the lug portion 286 .
- the right side concaves further include a pivot member 288 that extends longitudinally between the lug portions of the side frame members.
- the pivot member 288 configured as a shaft, is engaged by a hook portion 290 connected to and extending downwardly from the overlying support structure 200 .
- the hook portion 290 can be pivotally attached to the overlying support structure.
- the interface 292 of the lowermost ends of the concaves arranged in an end-to-end configuration can be connected using any of the methods described above. For example, they can be connected with fasteners or with an edge/hook engagement and mating shear components.
- the side frame members of the concave 280 , 282 are made more robust such that they can carry the threshing loads applied thereto to the overlying support structure.
- a frame 260 is shown as including five longitudinally spaced and transversely extending rib members 266 , with the forwardmost rib member having a plurality of rearwardly extending post members 268 extending through openings formed therein.
- the post members 268 extend from the support structure disposed in front of the forwardmost rib member.
- a plurality of eight concave inserts 380 are elongated in the longitudinal direction, rather than in the transverse direction. Of course, it should be understood that the number of inserts could be more or less than eight.
- Each concave insert 380 includes a plurality of arcuate, transversely extending side frame members 382 and rods 384 , and a plurality of longitudinally extending bar members 386 intersecting and connecting the rods and side frame members.
- the forwardmost side frame member 382 includes a pair of transversely extending lug portions 398 each having an opening 392 formed therein. The openings 392 are shaped to receive the post members 268 extending from the support structure through the frame member.
- each of the rib members 266 includes a cutout 394 portion shaped to receive the lug portions 390 as the concave inserts are slid longitudinally along the rib members 266 and into engagement with the post members 268 .
- the cutout 394 is defined by opposite sidewalls 396 and a bottom edge 398 .
- the plate members 386 of the concave inserts ride along the bottom edge 398 .
- the frame rib members also include a groove 400 extending downwardly from a top edge thereof between the cutouts 394 .
- An intermediate longitudinally extending plate member 388 of the concave insert extends downwardly from the bottom edge of the side flange 382 and is dimensioned to be received in the groove 400 as the concave insert is slid along the length of the frame and into engagement with the post members 268 .
- the rib member 266 is also provided with a pair of openings formed therethrough adjacent the edges of each cutout. Preferably, the rearmost rib member 266 is secured with fasteners extending though the openings.
- the frame member 382 of the concave insert can also include post members that are shaped to be received in the openings formed in the side of the next adjacent concave insert arranged in the side-by-side configuration. Alternatively, bolts, pins or like fasteners can interconnect the longitudinally abutting concave inserts.
- a rod 402 extends longitudinally through the rib members 266 below the concave inserts to stabilize the rib members from longitudinal deflection.
- the support structure includes a plurality of hook members 290 extending downwardly therefrom adjacent the ends of the concaves along the right side of the assembly.
- the hook member 290 is supported by a bracket 294 , which is attached to the modified Z-shaped member 202 .
- the hook member 290 can be fixedly mounted to the bracket, or it can be pivotally mounted thereto so as to provide a transverse, lateral movement of the concaves 280 , 282 .
- the end of the hook member 290 forms a transversely, inwardly facing opening 296 dimensioned to receive the longitudinally extending pivot member 288 attached to the end of the concave.
- An adjacent locking device 300 is pivotally mounted to the support structure about axis 302 with a pin or like shaft below the hook member, and includes a hook portion 304 extending transversely inward from the pivot axis 302 , and an arm portion 306 extending transversely outward from the pivot axis.
- the hook portion 304 is pivotable about axis 302 between a disengaged position, shown in FIG. 15, and an engaged position, shown in FIG. 14. In the engaged position, the hook portion 304 substantially closes the opening 296 formed by the hook member 290 so as to prevent the pivot member from being disengaged with the hook member.
- the lock device further includes a longitudinally extending lock bar 308 that extends between and connects the ends of the arm portions 306 .
- the lock bar 308 can be grasped by the user and rotated so as to pivot the locking device between the engaged and disengaged positions.
- a grate 36 is shown as including four transversely extending primary rib members 240 and a plurality of transversely extending secondary rib members 242 longitudinally spaced between the primary rib members.
- the grate also includes a plurality of longitudinally extending bar members 244 secured to the top of the rib members by welding or the like.
- Each of the primary rib members 240 includes an end portion 246 that is mounted to the support structure with bolts. It should be understood, however, that a grate assembly could be constructed which operates similarly to the concave assemblies described herein.
- the terms “concave” and “concave insert,” as used herein and in the appended claims should be defined as including grates and grate inserts respectively.
- the grate assembly could include a frame 860 that supports a plurality of grate inserts 880 and 982 , which are removable therefrom in a transverse direction.
- the frame can be further be configured to be transversely moveable.
- the grate inserts could be secured to the frame or to each other as described hereinabove.
- the frame 860 includes a plurality of rib members 866 extending transversely and circumferentially from one side of the frame to the other.
- a pivot member 878 extends longitudinally through the ends of the rib members 866 , while a bracket member 867 interconnects the ends.
- a mounting bracket 882 formed as a C-channel with an outwardly extending flange 884 , is connected to the rib members 866 .
- a longitudinally extending frame member 868 connects the rib members and includes a plurality of openings 872 .
- a longitudinally extending rod is offset from the frame member 868 and further connects the rib members 866 .
- the grate inserts 880 , 982 include a plurality of transversely extending rib members 242 longitudinally spaced along the insert.
- the grate further includes a plurality of longitudinally extending bar members 244 secured to the top of the rib members by welding or the like.
- the rib members 242 on the grate insert 880 further include hook portions 890 .
- An end frame member 892 includes a pair of openings 894 .
- the grate insert 982 includes an end frame member 984 and a pair of posts 1006 , or pins, extending therefrom, with each end having a tapered, or frusto-conically shaped end portion which facilitates the insertion of the pin into a mating opening.
- a frame member 1012 includes an outwardly extending flange 1014 , which is preferably angled slightly from the end of the concave insert so as to mate with flange 884 on the frame. Fasteners are installed to releasably connect the grate insert with the frame, as shown in FIG. 18.
- the grate inserts are installed in a similar fashion as previously described for the concave inserts.
- the grate insert 880 is first inserted through one of the openings 1016 formed between the rib members 866 .
- the hook portions 890 are pivotally supported on the pivot member 878 .
- the grate insert is then pivoted into position where it can be held with fasteners extending through openings 1000 formed in the rib members 866 .
- the grate insert 982 is then inserted through an opposite opening 1016 while the pins 1006 are inserted through openings 872 and 894 , so as to secure the grate member 880 in place.
- the grate insert 982 is then moved into position such that flange 1014 abuts flange 884 , whereinafter the flanges can be secured one to the other with fasteners and the like. During this installation, the grate insert 982 can be rested on the rod 867 to alleviate the load being applied by the user as the grate insert is maneuvered into position.
- a similar rod can be installed on the concave frame described above to provide a support or resting member for one or more of the concave inserts.
- a support member can be installed on one or more sides of the frame member 868 , as described above with respect to the concave frame.
Abstract
Description
- The present invention relates generally to a concave assembly for a rotary combine, and in particular, to an adjustable concave assembly having removable concaves.
- Agricultural combines are well know in the art for harvesting and threshing a number of various agricultural crops, including for example corn, wheat, soybeans, etc. Typically, agricultural combines include a harvesting apparatus, an infeed mechanism and a separating apparatus. In operation, the harvesting apparatus reaps the crop, which is planted in the ground, with the infeed mechanism thereafter feeding the crop to the separating apparatus.
- Typically, the separating apparatus in a rotary combine includes a rotor, which can extend axially or transversely within the body of the combine, and which is surrounded at least in part by a perforated cage having a plurality of apertures. As shown for example in U.S. Pat. No. 5,489,239, issued Feb. 6, 1996 to Case Corporation, the same assignee as for the present application, the cage can include a series of concaves arranged in a side-by-side configuration, with each concave extending partially circumferentially around the rotor. Usually, it is desirable to provide for an adjustment of the concaves, wherein the spacing between the concaves and the rotor can be altered to provide for the threshing of different crops in different conditions. For example, it is known to pivotally support one end of the concave about an axis, with the other end thereof being adjustable for movement of the concave toward and away from the rotor as it pivots about the one end. As such, concaves typically are easily and readily adjustable only along one end thereof, and are adjustable only with relative difficulty at the other end, which is typically pivotally attached. Moreover, the adjustment of the concaves can be time consuming, which can lead to compromises in reaching optimum settings.
- In addition to adjusting the position of the concaves, it also can be desirable to have the ability to remove and/or replace one or more concaves positioned along the length of the rotor. For example, the user may desire to select the size and shape of the apertures defined by the concave such that the concave is suitable for harvesting a different crop having a smaller or larger grain. It may also be desirable to replace a concave if, for example, one or more of the concaves becomes damaged by the introduction of a foreign object, such as a rock, between the rotor and the concave.
- Concaves arranged in a side-by-side configuration can be removed sideways from the combine in a direction transverse to the longitudinal extent of the rotor, as illustrated for example in U.S. Pat. No. 3,871,383. Often, however, concaves include a heavy integral frame designed to withstand the substantial forces imparted by the threshing operation. As such, concaves typically are of a robust construction, which can thereby lead to the concaves being relatively heavy and difficult to handle. Moreover, each concave typically spans the entire circumferential span of the threshing area defined around the rotor, which typically is on the order of about 120 to 130 degrees measured around the axis of the rotor. The relatively large size and weight of the concaves associated with this span further contribute to difficulties with the handling and installation thereof.
- Briefly stated, one aspect of the invention is directed to an improved rotary combine having a rotor with a longitudinal axis of rotation and a support structure disposed adjacent the rotor. A longitudinally extending frame has first and second sides spaced circumferentially around the rotor. Each of the first and second sides is moveably mounted to the support structure such that each of the sides is moveable relative to the support structure in a transverse direction. A concave insert is removably mounted to the frame, with the concave insert being removable therefrom in an outward, transverse direction.
- In a preferred embodiment, the first and second sides of the frame are pivotally connected to a first and second shaft respectively. Preferably, a first and second arm extend radially from the first and second shafts respectively. A link has a first end pivotally connected to the second arm and a second end pivotally connected to the second side of the frame. The first arm is pivotally connected to the first side of the frame.
- In another aspect of the invention, a first and second concave each have a first and second end spaced circumferentially around the rotor respectively. The first end of each of the first and second concaves are releasably mounted to a frame. In a preferred embodiment, at least one of the first and second concaves is pivotally mounted about a pivot axis, which axis is substantially parallel to the longitudinal axis of rotation of the rotor and is spaced circumferentially around the rotor. In an alternative embodiment, both of the first and second concaves are pivotally mounted about a first and second pivot axes respectively, with both axes being substantially parallel to the longitudinal axis of the rotor and spaced circumferentially around the rotor. The first and second concaves are outwardly pivotable about the first and second pivot axis respectively in opposite directions relative to each other.
- In another aspect of the invention, the rotary combine includes a longitudinally extending frame having at least a first and second rib member extending transversely between the first and second side of the frame. The first and second rib members are longitudinally spaced apart and define an opening therebetween. Each of the first and second concave inserts is dimensioned to be removed from the first and second sides of the frame through the opening in a transverse direction.
- In another aspect of the invention, a concave is releasably and pivotally mounted about a pivot axis substantially parallel to the axis of rotation of the rotor. A locking member is pivotable between an engaged position, wherein the locking member engages a first end of the concave, and a disengaged position, wherein the locking member is disengaged from the first end of the concave. In a preferred embodiment, the first end of the concave includes a pivot shaft and the locking member comprises a hook member that engages the pivot shaft.
- In yet another aspect of the invention, the support structure includes an upper portion having two intersecting, inclined surfaces. In a preferred embodiment, the upper portion defines and/or supports a floor of a grain bin thereabove.
- In yet another aspect, a method is provided for replacing a concave in a rotary combine having at least a first and second concave each with a first and second end spaced circumferentially around the rotor respectively. The first ends of each of the first and second concaves are releasably mounted to the frame. In a preferred embodiment, at least the first end of the first concave is pivotally mounted about a pivot axis. In an alternative embodiment, the first end of each of the first and second concave are pivotally mounted about parallel first and second pivot axes respectively. The method includes pivoting the first concave in an outwardly, transverse direction about a first pivot axis and disengaging a first end thereof from the support structure. The method further includes engaging a first end of a replacement concave with the support structure and pivoting the replacement concave about the first pivot axis in an inwardly, transverse direction.
- In yet another aspect, a method for replacing a concave insert in a rotary combine includes removing the concave insert through an opening defined between a first and second rib member of a frame. A replacement concave insert is thereafter inserted through the same opening.
- The present invention provides significant advantages over other rotary combines. In particular, a concave assembly having a first and second side both moveable in a transverse direction, and preferably including movement in a transverse lateral direction, allows for a quick and easy adjustment of the concave relative to the rotor, and also provides the user with more flexibility in controlling the space between the concave assembly and the rotor. For example, as the concave assembly is moved in a transverse lateral direction, the concave assembly can also be rotated independently thereof so as to maintain a desired spacing between the rotor and concave assembly along the entire circumferential span of the concave assembly. In this way, the user can better control the pinching that can occur between the concave and the rotor.
- In addition, by providing a frame that is mounted to a support structure, the concave inserts, which are removably mounted thereto, can be made with smaller and lighter structure, since the concave insert is not alone required to carry the loads applied by the threshing operation. Rather, that function primarily is left to the underlying frame. Accordingly, the concave inserts can be made lighter and therefore can be more easily handled and manipulated by the user. Similarly, by providing at least a first and second concave insert defining the circumferential span of the concave assembly, both the size and weight of the concave inserts can be greatly reduced, so as to again facilitate the removal and replacement thereof. Moreover, as a result, the overall combined circumferential span of each of the at least first and second concave inserts can be increased. For example, the combined threshing span can be approximately 180 degrees, with each of a first and second concave insert each having a span of approximately 90 degrees. In this way, the overall threshing area of the concave assembly can be increased without increasing the size and weight of the concave inserts, and the attendant difficulty in the handling thereof. Indeed, the size and weight of each concave insert can actually be reduced, while at the same time increasing the overall circumferential span of the concave assembly.
- In addition, the frame, with its openings, allows for the easy removal and installation of concaves in a direction transverse to the axis of rotation of the rotor, for example, from the side of a combine having an axially extending rotor. As such, the user can easily install one or more concaves as needed, without disturbing the position of the remaining concaves. For example, a first and second concave can be releasably attached at circumferentially spaced ends, so as to thereby allow the user to remove one or more of the concaves in an outwardly transverse direction without disturbing the other of the concaves. Furthermore, the pivotable locking member allows the user to quickly and securely engage and disengage at least one end of the concave.
- In addition, the overall construction of the assembly and the interchangeability of the concaves, which can be made smaller and at less cost allows the user to replace the various concaves in a more cost-effective manner than is presently realized in the industry.
- The support structure with its inclined upper surfaces also provides significant advantages. In particular, the construction of the support structure provides increased structural strength and stability, while at the same time providing a inclined floor for the grain bin, which can facilitate the emptying thereof.
- The present invention, together with further objects and advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings.
- FIG. 1 is a perspective view, partially broken away, of an agricultural rotary combine.
- FIG. 2 is a partial side view of a separating apparatus for a rotary combine.
- FIG. 3 is a right side perspective view of a concave assembly supported by a support structure.
- FIG. 4 is a partial left side perspective view of the concave assembly and support structure shown in FIG. 3.
- FIG. 5 is a bottom view of the concave assembly and support structure shown in FIG. 3.
- FIG. 6 is an enlarged, partial left side perspective view of the concave assembly and support structure shown in FIG. 3.
- FIG. 7 is a right side perspective view of the frame and support structure shown in FIG. 6.
- FIG. 8 is a right side perspective view of the frame and support structure of FIG. 7 with a pair of concave inserts positioned in a side-by-side configuration.
- FIG. 9 is a right side perspective view of the frame and support structure of FIG. 7 with a pair of concave inserts positioned in an end-to-end configuration.
- FIG. 10 is a perspective view of a concave insert.
- FIG. 11 is an enlarged, partial end view of the concave assembly and support structure shown in FIG. 3.
- FIG. 12 is a right side perspective view of an alternative embodiment of a concave assembly supported by a support structure.
- FIG. 13 is an enlarged, partial perspective view of the concave insert shown in FIG. 12 being secured to the frame.
- FIG. 14 is an end view of an alternative embodiment of a concave assembly supported from an alternative embodiment of a support structure with a locking device in an engaged position.
- FIG. 15 is an enlarged, partial end view of the locking device shown in FIG. 14 with the locking device in a disengaged position.
- FIG. 16 is a partial perspective view of an alternative embodiment of a pair of concave inserts.
- FIG. 17 is a partial perspective view of an alternative embodiment of a pair of concave inserts.
- FIG. 18 is a partial section cut of the support structure, concave assembly, rotor and grain tank taken along line18-18 in FIG. 2.
- FIG. 19 is a partial section cut of the support structure, concave assembly, rotor and grain tank taken along line19-19 in FIG. 18.
- FIG. 20 is a left side perspective view of an alternative embodiment of the frame and support structure.
- FIG. 21 is a perspective view of an alternative embodiment of a right side concave insert.
- FIG. 22 is a perspective view of an alternative embodiment of a left side concave insert.
- FIG. 23 is a perspective view of a support frame for the separating grates.
- FIG. 24 is a perspective view of an alternative embodiment of a left side grate insert.
- FIG. 25 is a perspective view of an alternative embodiment of a right side grate insert.
- FIG. 26 is a right side perspective view of the concave assembly with covers disposed thereabove.
- FIG. 27 is a right side perspective view of the support structure, rotor, frame and covers.
- Referring to the drawings, FIG. 1 shows a conventional self-propelled rotary combine10 that includes a body or
housing 12 defining an internal open area orspace 13. The body, which can include a supporting frame, is supported onfront drive wheels 14 and steerablerear wheels 16. The combine is powered by an engine (not shown) and controlled from an operator'sstation 18. Acrop harvesting apparatus 20, otherwise referred to as a header, and aninfeed mechanism 22 are attached at a forward end of the combine. Theinfeed mechanism 22 feeds crop materials to arotor assembly 24 enclosed within the housing. One example ova rotary combine configured with a rotary assembly is disclosed in U.S. Pat. No. 5,489,239, which issued Feb. 6, 1996 to Case Corporation, the same assignee as the present application, and which is hereby incorporated herein by reference. - As best shown in FIGS. 2, 18,19 and 26, the
rotor assembly 24 is preferably configured as a single axial unit that threshes and separates crop materials presented thereto into grain and other materials. However, it should be understood that the rotary combine could be configured with more than one rotary assembly, for example, with two units arranged in a parallel configuration. As shown, therotor assembly 24 is mounted in theinternal area 13 defined by thehousing 12 and includes arotor 28 with a longitudinal extent rotatably mounted to the housing about a longitudinal axis ofrotation 30, which extends axially along the length of the combine. It should be understood that the term longitudinal means of or relating to length or the lengthwise dimension. It should also be understood that the rotor, with its longitudinal extent could be mounted within the housing so as to extend laterally from side-to-side within the combine. It should be understood that the terms “left side,” “right side,” “left,” “right,” “front,” “rear,” “upper,” “lower,” “top,” and “bottom,” and their derivatives, as used herein are intended to indicate directions relative to the views presented in the Figures, and in particular, from a perspective when viewing the rotary combine from the operator's position in the rotary combine. - Between the upstream, or front end, and the downstream, or rear end, of the
rotor assembly 24, the crop materials is threshed as it spirals around therotor 28 against a threshing cage disposed partially, circumferentially around the rotor. The rotor can be dimensioned with a broad range of diameters, depending on the desired size and performance characteristics of the combine. For example, suitable rotors may have a diameter in the range of 15 inches to 30 inches, although it should be understood that other diameters, larger and smaller, would also work for the purposes of this invention. The rotor is configured withsuitable instrumentalities 25, as shown for example in FIGS. 18 and 26, mounted on the peripheral surface thereof that cooperate with the threshing cage to thresh the crops introduced therebetween. The threshing cage includes varioussemi-cylindrical concaves 34 and grates 36 provided along a lower arcuate portion of the cage. Therotor 28 is preferably made of steel, and is generally rotated at speeds of between 150 to 1500 rpm, depending on the type of crop being threshed, and the conditions under which the threshing is being performed. It should be understood, however, that the rotor speed is not critical to the operation of the invention, and that other rotor speeds, faster and slower, may be desired and suitable for the purposes of the present invention without detracting or departing from the scope thereof. - Referring to FIG. 2, the
concaves 34 and grates 36 each have a plurality of apertures that allow the grain to be separated from the other crop materials as the grain passes through the apertures. Most of the grain drops onto a grain pan 38. The grain is thereafter conveyed rearward from the grain pan 38 by an auger mechanism 40 for subsequent cleaning and collection. Straw, tailings and other waste crop material are impelled rearwardly out of the discharge end of the rotor assembly where a rotary beater throws the straw and other waste material rearwardly from the combine. - The
combine 10 further includes a cleaning system for cleaning chaff, straw, tailings and other foreign material from the grain. For example, the cleaning system can include a cleaningfan 44, achaffer sieve 46, agrain sieve 48 and aclean grain collector 50. Asuitable auger mechanism 52 directs clean grain from thecollector 50 into a hopper or grain bin. It should be understood that other cleaning systems would be suitable for the purposes of the present invention without detracting or departing from the scope thereof. - Now referring to FIGS.3-6, an improved concave assembly and support structure therefor is shown. The concave assembly preferably includes a
frame 60 and a plurality ofconcave inserts 80, shown in the preferred embodiment as six concave inserts. - The
support structure 100 includes a pair ofupper rails 102 extending longitudinally along opposite sides of the rotor, and a pair oflower rails 104 extending longitudinally along opposite sides of the rotor beneath the upper rails. In a preferred embodiment, therails 102 have a Z-shape, and include an inwardly extendingupper flange 108, an outwardly extendinglower flange 110, and avertical web 112 connecting the upper and lower flanges. Thelower rails 104 are attached to a floor of thebody 12 with a plurality of fasteners, such as bolts, or by welding and the like. A plurality ofsupport legs 106 connect the upper and lower rails. Thesupport legs 106 are attached to the upper andlower rails - In addition, a series of transversely extending
bulkheads 114 are longitudinally spaced along the top of the upper rails. Thebulkheads 114 extend between and connect the upper rails 102. Thebulkheads 114 are further attached to the bottom of thegrain tank 402, shown in FIGS. 18 and 19. Thebulkheads 114 are preferably made of steel, and are attached to theupper rails 102 by welding or with fasteners. Thebulkheads 114 each include a pair of inclinedupper edges 116, and a lower arcuate-edge 118, which includes a semi-cylindrical flange that extends partially, circumferentially around therotor 28 disposed therebelow. Theupper edges 116 of the bulkheads support afloor 404 of a grain bin disposed thereabove, as shown for example in FIGS. 18 and 19. Preferably, theinclined edges 116 are each formed at an angle of about 40 degrees to the vertical, although it should be understood that other angles would also work. The bulkhead includes asupport web 120 extending between the upper and lower edges. Aspine member 122 extends longitudinally along the length of the support structure and connects a center top portion of the bulkheads. Thespine 122 is preferably made of steel and is secured to each of the bulkheads by welding and/or fasteners. A forward portion of the spine is comprised of two frame members that extend downwardly from the upper portion of the forwardmost bulkhead to a plate member attached to the end of each upper rail. As best shown in FIGS. 18 and 26,sheet members 1024 are installed on top of the bulkheads. A series of arcuate,semi-cylindrical covers 124, best shown in FIGS. 26 and 27, extend between and connect thelower portions 118 of the bulkheads and prevent the grain and other crop materials from getting into the space defined thereabove as those materials are threshed and rotated with therotor 28. - In an alternative embodiment, shown in FIG. 14, the support structure includes a
truss 204 overlying the rotor. The truss includes a pair of upwardly inclined and intersectingupper surfaces 216, which support and help define a floor of the grain bin formed thereabove. Alower portion 218 of the truss extends partially circumferentially around the rotor. Theupper surfaces 216 andlower portion 218 are connected with a plurality ofsupport members 220 extending therebetween. In the preferred embodiment, modified Z-shaped rails 202 with an upper flange orweb 208,lower flange 210,vertical web 212 and an additionalupstanding flange 214 connect the upper andlower portions - Alternatively, a series of transversely extending trusses can be longitudinally spaced along the rotor in an overlying relationship thereto, with only the upper rails202 extending longitudinally along the rotor. In this embodiment, lower cover members can be provided to extend between and connect the lower portions of the trusses.
- In either embodiment, the spaces formed between the upper and
lower portions support members 220, provides an ideal, protected location for passingutilities 221, such as conduit, fluid lines, cables, wiring and the like, between the front and back of the combine. Similarly, openings can be provided in the bulkheads referenced above to provide passage for these utilities. These various utilities can be easily attached and supported by the support structure with various clips and the like, which can be fastened, for example, to the support members or to the web of the bulkheads. - Referring to FIGS.3-9, 11, 14, and 20, the support structure further includes a first and
second pivot shaft upper rails 102 on opposite sides of the support structure, with the pivot shafts circumferentially spaced around therotor 28. Eachpivot shaft axis 30 of rotation of the rotor and to each other. Each pivot shaft, preferably formed as a tube, is rotatably supported by a series of bearing supports 134, which in turn are attached to either to a bottom of theflange 108 of the respectiveupper rail 102 with abracket 136, or to the end of the rail, which includes aplate member 138 attached thereto. The shaft alternatively can be configured as a solid axle, or can be comprised of a plurality of shorter support pins spaced longitudinally along the support structure. In a preferred embodiment, thefirst shaft 126 which rotates on the right side of therotor 28, is supported at four points, while thepivot shaft 128 on the left side is rotatably supported at two points. - As best shown in FIGS.6-9, 11, and 20, a plurality of longitudinally spaced crank arms 140 (shown as four) extend radially from the
first pivot shaft 126. Three of thecrank arms 140 are dual crank arms having two arm members forming a space therebetween for receiving a mating member. The rearwardmost crank arm preferably includes only a single arm member. It should be understood that any or all of the crank arms could be configured with single or dual arm members. In a preferred embodiment, the crankarms 140 extend radially downward from thefirst pivot shaft 126 in a substantially, vertical direction. A plurality of longitudinally spaced dual crank arms 142 (shown as two) extend radially from thesecond pivot shaft 128. In a preferred embodiment, the crankarms 142 extend radially inward from thepivot shaft 128 in a substantially horizontal direction. A plurality of link members 144 (shown as two) each include a first andsecond end first end 146 pivotally connected to anend 152 of thecrank arm 142 with a pin or like member. It should be understood that the number of crank arms and bearing supports could be increased or decreased as desired. - In the alternative embodiment shown in FIG. 20, the forward
most link member 444 includes abracket member 446 adjustably connected with anadjustment member 448. Preferably, theadjustment member 448 is formed as a bolt, which threadably engages the bracket member. The adjustment member can be actuated by rotation to adjust the frame up or down along the length of the adjustment member, which preferably extends in a substantially vertical direction. - Referring to FIGS.7-9 and 20, the
frame second sides second sides frame rib members second sides rib members arcuate edge 174 preferably having a radius substantially the same as or slightly greater than the radius of the rotor. More preferably, the upper peripheral edge of the right half of the rib member has a slightly larger arc than the upper peripheral edge of the left side, with the right hand and left hand arcs therefore having slightly different radii. - The
rib members openings 70 between successive rib members. For example, as shown in FIGS. 7 and 20, the fourrib members openings 70 therebetween, each of which is further subdivided into two sub-openings by a longitudinally extendingframe member rib members frame member 68 includes a pair ofholes 72 formed therein and asupport member 74, formed as a block, attached to both sides thereof with a pair of fasteners along a bottom edged thereof. Thesupport member 74 provides a rest or support for an end of a concave insert while it is being installed and before any securing fasteners are secured. Theforwardmost rib member inclined flange 76 formed on the support structure which cooperates with the infeed mechanism to prevent grain from escaping through the space formed therebetween. - Each
rib member 66 includes a first andsecond end lower lug opening crank arm 140 and link 144 atopenings lower lug top portion lug 164 on theend 160 preferably being more displaced than thelug 166 on theother end 162, such that as theframe 60 is translated, as more fully explained below, the geometry of thelugs openings rotor 30 and the concave assembly along the right side thereof, with the gap slowly diminishing as one follows the concave circumferentially along its circumferential span, otherwise defined as the inner circumferential distance between the opposite ends of the concave. In this way, the rotor, which rotates counterclockwise when viewing it from the front looking back, introduces the crop material into a larger gap at the right side of the concave with the gap gradually diminishing between the rotor and concave from right to left. - Referring to FIGS. 7 and 11, a
pivot member 178, preferably configured as a shaft or axle, extends longitudinally through each end of therib members 160 along afirst side 62 of the frame, while apivot member 180, also preferably configured as a shaft or axle, extends longitudinally through eachend 162 of the rib members along asecond side 64 of the frame. Thepivot members rib member 66 adjacent a top portion of eachend lug members sealing bracket 182, which extends longitudinally along the frame, is mounted to theend 162 of the rib members. The sealingbracket 182 includes an upwardly extendingflange 184, which cooperates with the lower edge of the cage assembly or the cover attached to the support structure to close the gap between the frame and the support structure, so as to prevent grain from escaping through the space formed therebetween. - Referring to the alternative embodiment of the frame shown in FIG. 20, each
rib member 466 includes a first andsecond end first end 560 includes an outwardly extendinglower lug 564 having anopening 468 therethrough. Thelower lug 564 is downwardly displaced with respect to a top portion 572 of the end of the rib member. A pivot member 578, preferably configured as a shaft or axle, extends longitudinally through each end of therib members 560 along afirst side 462 of the frame. The pivot member 578 is connected with eachrib member 466 adjacent the top portion 572 ofend 560 above thelug member 564. On thesecond side 464, an upwardly extending Z-shaped sealing bracket 582, withflanges web 592 which extends longitudinally along the frame, is mounted to theend 562 of the rib members. In addition, the lower end of thelinks - Referring to FIGS.7-9, a
dual crank arm 186 is attached to and extends radially from an end of thepivot shaft 126. Similarly, adual crank arm 188 extends radially from an end ofpivot shaft 128. A first andsecond actuator crank arms pivot shafts arms - In operation, the
actuators pivot shafts first pivot shaft 126 rotates in response to movement ofactuator 190 and crankarm 186, theend 150 of the downwardly extending crankarm 140 pivots about thepivot axis 130 and thereby moves the pivotally attached ends 160 of the rib members, orside 62 of the frame, and in particular, the point of pivotal attachment between the rib member and the crank arm, in a transverse, lateral direction. It should be understood that the term transverse means any direction, not necessarily linear, within the plane formed perpendicular to thelongitudinal axis 30 of rotation of the rotor and the pivot axes of thepivot shafts first pivot shaft 126 and the attendant movement of thefirst side 62 of the frame also effects a transverse, lateral movement of thesecond side 64 of the frame as it pivots about theend 148 of the link member, which in turn pivots about the end of the crank arm. In essence, therib members 66,links 144, crankarms 140 and support structure act as a 4-bar linkage which effects a transverse, translation of the frame member in a lateral direction relative to therotor 28. If thelinks 144 are not parallel, or of the same length as thearms 140, the frame may also be slightly rotated as it is translated. - As the
second crank arm 142 is independently rotated byactuator 192 and crankarm 188, theend 152 of thecrank arm 142 moves thelink member 144 in a substantially transverse, vertical direction, which thereby moves theends 160 of the rib members, orside 64 of the frame, in a vertical direction. It should be noted that this movement does not effect a similar movement of the other side of the frame, which cannot be moved vertically due to the direct pivotal connection with thecrank arm 140. Rather, thesecond side 64 of the frame is pivoted about thepivot point 168 or the connection between thefirst side 62 of the frame and thecrank arm 140. - In summary, in the preferred embodiment, rotation of the
pivot shaft 126 on the right side effects a transverse, lateral movement of the entire concave assembly, comprised of a primary translation component and potentially a small secondary rotation component, while a rotation of thepivot shaft 128 on the left side effects a pivoting of the concave assembly about the pivotal attachment of theframe 60 to thecrank arm 140. - Now referring to FIGS. 8 and 9, a plurality of
concave inserts frame 60 in a side-by-side configuration and an end-to-end configuration respectively. As shown in FIG. 10, eachconcave insert concave inserts 82 configured in a side-by-side relationship along the left side of the assembly preferably have an arcuate shape defined by an upper concave surface of another profile. Preferably, theconcave insert 80 on the right side has a slightly larger radius than theconcave insert 82 on the left side, with bothconcave inserts concave insert 80 has a radius of about 20.5 inches and theconcave insert 82 has a radius of about 20 inches. It should be understood that the radius of each individual concave insert also could be varied along the circumference thereof. Conversely, it should be understood that the concave inserts could also be made modular, with the same radius of curvature. - In the preferred embodiment, the concave assembly includes six concave inserts, with three concave inserts arranged in a side-by-side relationship along each side of the concave assembly, and with each of the three concave inserts arranged side-by-side on the right side further arranged in an end-to-end relationship with the three concave inserts arranged side-by-side on the left side. It should be understood that more or less concave inserts could be arranged in both the longitudinal (side-by-side) direction and in the transverse (end-to-end) direction depending on the longitudinal extent or length of the frame and on its circumferential span or width.
- As best shown in FIG. 10, each
concave insert side frame members 84 or ribs, which terminate along one end in a downwardly extendinghook portion 86. Twointermediate frame members 88 also extend transversely along the circumferential span of theconcave insert frame members 90, configured as bar member, extend between and are connected to the oppositeside frame members 84 and intersect theintermediate frame members 88. Thelowermost frame member 92, which defines an end of the concave insert, includes at least a pair ofopenings 94 formed in a lower portion thereof. Along the opposite end, acurved bearing plate 96 extends longitudinally between and nests in theopposite hook portions 86 and forms itself a hook. Aplate member 98 is secured to theuppermost frame member 54 with at least a pair ofbolts 56 and includes a pair of slottedopenings 58 opening outwardly along the bottom of the plate member. The concave inserts 80, 82 also include a plurality of longitudinally spacedarcuate rods 32 that extend between the ends of the concave insert through the plurality of bar members below a top edge thereof. The spaces or openings formed between the rods, bar members and frame members form apertures through which the grain passes as the crop materials are threshed between theconcave insert rotor 28. In various suitable embodiments, the openings have a range of widths from about a ¼ inch to about ⅜ inch and a length of from about 1 inch to about 1½ inches, depending on the type of grain being threshed. The various concave insert components, including theframes rods 32, bearing plates andplates 98, are preferably made of steel, although other materials would also work. - In an alternative embodiment, shown in FIGS. 20 and 21, the right side concave80 further includes a pair of
openings 700 formed about midway in theframe members 84 or ribs. The left sideconcave insert 782 is similar toconcave insert 82, but the frame members 784 do not terminate in a hook portion. Rather, aframe member 702, formed as a plate, includes an outwardly extendingflange 704, which is preferably angled slightly from the end of the concave insert. On the other end of theconcave insert 782, a pair of posts or pins 706, each having a tapered or frusto-conical end portion 708, extend fromframe member 92. Thepins 706 are dimensioned to be received in theopenings 94 formed in the end of theconcave insert 80. - To install the
concave inserts concave insert 80, is introduced transversely through one of thesubopenings 70 formed between one pair ofrib members 66 making up theframe 60. Thehook portions 86 on the end of the concave insert, with itscurved bearing plate 96, is disposed on thepivot member 178 so as to be pivotally engaged therewith. The opposite, lower end of theconcave insert 80 is then pivoted about thepivot member 178 until theholes 94 in thelowermost plate member 92 are aligned with theholes 72 in theframe member 68. Theopposite side insert 82 can be similarly installed and pivoted aboutpivot member 180 into position, whereinafter a bolt or like fastener can be installed through each of the lowermost plate members 92 and theframe member 68 to releasably secure theconcave inserts frame member 66 and to each other. During these operations, the lower ends of the concave inserts can be rested on thesupport member 74 to ease the load on the installer and to facilitate the installation of the inserts. - Alternatively, it should be understood that the ends of the concave inserts can be individually secured to the plate member with fasteners. In yet another alternative, the longitudinally extending frame member is omitted, and the lowermost plate members abuttingly engage, whereinafter they can be fastened together with bolts, screws and the like. It should be understood that bolts or other like fasteners can also be installed through the side frame members so as to attach the side flanges to the adjacent rib members or to the side frame members of the next concave insert arranged along the side thereof. When installed, the upper arcuate edge of the frame members is substantially flush with the arcuate
top edge 174 of theadjacent rib members 66. - To remove one of the
concave inserts lowermost plates 92 are removed, and the lowermost end of theconcave insert opening 70 between the rib members about thepivot member rotor 28. The right sideconcave insert 80 is pivoted clockwise aboutpivot member 178 when viewing the assembly from the front looking back. The left sideconcave insert 82 is pivoted in an opposite counterclockwise direction aboutpivot member 180. The bearingplate 96, with the supportinghook portions 86, can thereafter be disengaged from thepivot members concave insert - In particular, by providing two concave inserts that form the circumferential threshing span, the inserts can be made lighter, while at the same time providing for a larger overall threshing span. It should be understood that the circumferential span could be further divided by three, or even more, concave inserts, with additional concave inserts supported by the frame between the two concave inserts releasably mounted as described herein, but with their lower ends circumferentially spaced. In this way, the circumferential spans of the concave inserts could be reduced even more, thereby making them lighter and less bulky. Similarly, since the frame, which is affixed to the support structure, is constructed to absorb the threshing loads, the concave inserts can be made with smaller side frame members, thereby also making them lighter and more manageable for the user or installer. In addition, the transverse removal of the concave inserts from the side of the frame eases the burden of replacement as the insert can be accessed and replaced from the side of the combine, when configured with an axially extending rotor, without disturbing the installation of the other concave inserts.
- In an alternative embodiment, best shown in FIGS.20-22, the right side
concave insert 80 is installed first by pivotally engaging thepivot member 178 withhook portion 86. The concave insert is pivoted into position and fasteners, preferably bolts, are installed though opening 470 in theframe rib member 466 andopening 700 in the concaveinsert frame member 84. In this position, theopenings 94 are aligned with theopenings 72 formed in theframe member 468. Next, the left sideconcave insert 782 is installed by inserting thepins 706 through theopenings 72 and into theopenings 94 formed in the right side concave insert. Theconcave insert 782 is then pivoted into position. Theend member 702 is then secured to theflange 590 of the bracket with fasteners. Theconcave insert 782 can be further secured to therib members 466 with fasteners passing throughopenings 700. It should be understood that the bolts securing theframe members 84 on eitherinsert - Now referring to FIGS. 16 and 17, alternative methods of connecting abutting concave inserts arranged in an end-to-end configuration are shown. In these embodiments, the
frame member 68 has been eliminated, or, the frame itself has been omitted, with the concaves being directly attached to the support structure. As used herein, the term concave is meant to refer to a concave insert supported by a frame, or to a concave member that is directly secured to the support structure without a separate supporting frame. - In FIG. 16, the lowermost end of one concave is configured with a longitudinally extending
bottom hook portion 222 forming a channel opening upwardly along one end thereof. A pair ofopenings 224 are formed in the plate member above the hook portion. The lowermost end of the mating concave is configured with a pair of transversely extendingpost members 228 dimensioned to be received in theopenings 224 of the plate member. In operation, thebottom edge 226 of the plate member is inserted into the channel of thehook portion 222, while thepost members 228 are received in theopenings 224. Because the threshing loads are applied radially outward along the circumferential span of the concaves, the interface of the abutting concaves reacts out the load through a moment applied by thebottom edge 226 of the plate member pulling on the hook portion, and an engagement between the upper portions of the abutting plates. Thepost members 228 engaged with theholes 224 further absorb the shearing loads applied between the concaves and maintain the engagement between the concaves. - In an alternative embodiment, shown in FIG. 17, a longitudinally extending
tongue portion 230 formed along one plate member engages agroove 232 on the mating plate member so as to absorb any shear load between the abutting concaves. - In an alternative embodiment, the concave assembly does not include a supporting frame. In this embodiment, shown in FIG. 14, the concave assembly includes a plurality of left and right side concaves280, 282 with side frame members each having
lug portions lug portion 286. In this embodiment, the right side concaves further include apivot member 288 that extends longitudinally between the lug portions of the side frame members. Thepivot member 288, configured as a shaft, is engaged by ahook portion 290 connected to and extending downwardly from theoverlying support structure 200. Thehook portion 290 can be pivotally attached to the overlying support structure. Theinterface 292 of the lowermost ends of the concaves arranged in an end-to-end configuration can be connected using any of the methods described above. For example, they can be connected with fasteners or with an edge/hook engagement and mating shear components. In the embodiment of FIG. 14, the side frame members of the concave 280, 282 are made more robust such that they can carry the threshing loads applied thereto to the overlying support structure. - In yet another embodiment, shown in FIGS. 12 and 13, a
frame 260 is shown as including five longitudinally spaced and transversely extendingrib members 266, with the forwardmost rib member having a plurality of rearwardly extendingpost members 268 extending through openings formed therein. Thepost members 268 extend from the support structure disposed in front of the forwardmost rib member. In this embodiment, a plurality of eightconcave inserts 380 are elongated in the longitudinal direction, rather than in the transverse direction. Of course, it should be understood that the number of inserts could be more or less than eight. Eachconcave insert 380 includes a plurality of arcuate, transversely extendingside frame members 382 androds 384, and a plurality of longitudinally extendingbar members 386 intersecting and connecting the rods and side frame members. The forwardmostside frame member 382 includes a pair of transversely extendinglug portions 398 each having an opening 392 formed therein. The openings 392 are shaped to receive thepost members 268 extending from the support structure through the frame member. - In addition, each of the
rib members 266 includes acutout 394 portion shaped to receive the lug portions 390 as the concave inserts are slid longitudinally along therib members 266 and into engagement with thepost members 268. Thecutout 394 is defined byopposite sidewalls 396 and abottom edge 398. Theplate members 386 of the concave inserts ride along thebottom edge 398. The frame rib members also include agroove 400 extending downwardly from a top edge thereof between thecutouts 394. An intermediate longitudinally extendingplate member 388 of the concave insert extends downwardly from the bottom edge of theside flange 382 and is dimensioned to be received in thegroove 400 as the concave insert is slid along the length of the frame and into engagement with thepost members 268. Therib member 266 is also provided with a pair of openings formed therethrough adjacent the edges of each cutout. Preferably, therearmost rib member 266 is secured with fasteners extending though the openings. Theframe member 382 of the concave insert can also include post members that are shaped to be received in the openings formed in the side of the next adjacent concave insert arranged in the side-by-side configuration. Alternatively, bolts, pins or like fasteners can interconnect the longitudinally abutting concave inserts. Arod 402 extends longitudinally through therib members 266 below the concave inserts to stabilize the rib members from longitudinal deflection. - Referring to FIGS. 14 and 15, the support structure includes a plurality of
hook members 290 extending downwardly therefrom adjacent the ends of the concaves along the right side of the assembly. Thehook member 290 is supported by abracket 294, which is attached to the modified Z-shaped member 202. Thehook member 290 can be fixedly mounted to the bracket, or it can be pivotally mounted thereto so as to provide a transverse, lateral movement of theconcaves hook member 290 forms a transversely, inwardly facingopening 296 dimensioned to receive the longitudinally extendingpivot member 288 attached to the end of the concave. Anadjacent locking device 300 is pivotally mounted to the support structure aboutaxis 302 with a pin or like shaft below the hook member, and includes ahook portion 304 extending transversely inward from thepivot axis 302, and anarm portion 306 extending transversely outward from the pivot axis. Thehook portion 304 is pivotable aboutaxis 302 between a disengaged position, shown in FIG. 15, and an engaged position, shown in FIG. 14. In the engaged position, thehook portion 304 substantially closes theopening 296 formed by thehook member 290 so as to prevent the pivot member from being disengaged with the hook member. In the disengaged position, the hook portion is pivoted away from the opening, wherein thepivot member 288 can be disengaged from thehook portion 290 by removing it through theopening 296. The lock device further includes a longitudinally extendinglock bar 308 that extends between and connects the ends of thearm portions 306. Thelock bar 308 can be grasped by the user and rotated so as to pivot the locking device between the engaged and disengaged positions. - Referring to FIGS. 3, 5 and6, a
grate 36 is shown as including four transversely extendingprimary rib members 240 and a plurality of transversely extendingsecondary rib members 242 longitudinally spaced between the primary rib members. The grate also includes a plurality of longitudinally extendingbar members 244 secured to the top of the rib members by welding or the like. Each of theprimary rib members 240 includes an end portion 246 that is mounted to the support structure with bolts. It should be understood, however, that a grate assembly could be constructed which operates similarly to the concave assemblies described herein. Moreover, it should be understood that the terms “concave” and “concave insert,” as used herein and in the appended claims, should be defined as including grates and grate inserts respectively. - For example, as best shown in FIGS. 18 and 23-25, the grate assembly could include a frame 860 that supports a plurality of grate inserts 880 and 982, which are removable therefrom in a transverse direction. The frame can be further be configured to be transversely moveable. The grate inserts could be secured to the frame or to each other as described hereinabove. In the preferred embodiment, the frame 860 includes a plurality of
rib members 866 extending transversely and circumferentially from one side of the frame to the other. On one side of the frame, apivot member 878 extends longitudinally through the ends of therib members 866, while abracket member 867 interconnects the ends. On the other side, a mountingbracket 882, formed as a C-channel with an outwardly extendingflange 884, is connected to therib members 866. A longitudinally extendingframe member 868 connects the rib members and includes a plurality ofopenings 872. In addition, a longitudinally extending rod is offset from theframe member 868 and further connects therib members 866. - Referring to FIGS. 24 and 25, the grate inserts880, 982 include a plurality of transversely extending
rib members 242 longitudinally spaced along the insert. The grate further includes a plurality of longitudinally extendingbar members 244 secured to the top of the rib members by welding or the like. Therib members 242 on thegrate insert 880 further includehook portions 890. Anend frame member 892 includes a pair ofopenings 894. Thegrate insert 982 includes anend frame member 984 and a pair ofposts 1006, or pins, extending therefrom, with each end having a tapered, or frusto-conically shaped end portion which facilitates the insertion of the pin into a mating opening. The pins are dimensioned to be received in and inserted throughopenings 872 in theframe member 868 and theopenings 894 formed in thegrate insert 880. Aframe member 1012 includes an outwardly extendingflange 1014, which is preferably angled slightly from the end of the concave insert so as to mate withflange 884 on the frame. Fasteners are installed to releasably connect the grate insert with the frame, as shown in FIG. 18. - The grate inserts are installed in a similar fashion as previously described for the concave inserts. In particular, the
grate insert 880 is first inserted through one of theopenings 1016 formed between therib members 866. Thehook portions 890 are pivotally supported on thepivot member 878. The grate insert is then pivoted into position where it can be held with fasteners extending throughopenings 1000 formed in therib members 866. Thegrate insert 982 is then inserted through anopposite opening 1016 while thepins 1006 are inserted throughopenings grate member 880 in place. Thegrate insert 982 is then moved into position such thatflange 1014 abutsflange 884, whereinafter the flanges can be secured one to the other with fasteners and the like. During this installation, thegrate insert 982 can be rested on therod 867 to alleviate the load being applied by the user as the grate insert is maneuvered into position. A similar rod can be installed on the concave frame described above to provide a support or resting member for one or more of the concave inserts. Conversely, a support member can be installed on one or more sides of theframe member 868, as described above with respect to the concave frame. - Although the present invention has been described with reference to preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. As such, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting and that it is the appended claims, including all equivalents thereof, which are intended to define the scope of the invention.
Claims (57)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/963,615 US6443835B1 (en) | 2000-02-14 | 2001-09-27 | Replacing concave inserts for a rotary combine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/503,512 US6358142B1 (en) | 2000-02-14 | 2000-02-14 | Concave assembly and support structure for a rotary combine |
US09/963,615 US6443835B1 (en) | 2000-02-14 | 2001-09-27 | Replacing concave inserts for a rotary combine |
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US09/503,512 Division US6358142B1 (en) | 2000-02-14 | 2000-02-14 | Concave assembly and support structure for a rotary combine |
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US20020077162A1 true US20020077162A1 (en) | 2002-06-20 |
US6443835B1 US6443835B1 (en) | 2002-09-03 |
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US09/503,512 Expired - Lifetime US6358142B1 (en) | 2000-02-14 | 2000-02-14 | Concave assembly and support structure for a rotary combine |
US09/963,614 Expired - Lifetime US6485365B2 (en) | 2000-02-14 | 2001-09-27 | Support structure for a concave assembly for a rotary combine |
US09/963,615 Expired - Lifetime US6443835B1 (en) | 2000-02-14 | 2001-09-27 | Replacing concave inserts for a rotary combine |
US09/963,617 Expired - Lifetime US6503142B2 (en) | 2000-02-14 | 2001-09-27 | Concave locking member for a rotary combine |
US10/176,136 Expired - Lifetime US6530833B2 (en) | 2000-02-14 | 2002-06-19 | Transversely adjustable concave assembly for a rotary combine |
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Application Number | Title | Priority Date | Filing Date |
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US09/503,512 Expired - Lifetime US6358142B1 (en) | 2000-02-14 | 2000-02-14 | Concave assembly and support structure for a rotary combine |
US09/963,614 Expired - Lifetime US6485365B2 (en) | 2000-02-14 | 2001-09-27 | Support structure for a concave assembly for a rotary combine |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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US09/963,617 Expired - Lifetime US6503142B2 (en) | 2000-02-14 | 2001-09-27 | Concave locking member for a rotary combine |
US10/176,136 Expired - Lifetime US6530833B2 (en) | 2000-02-14 | 2002-06-19 | Transversely adjustable concave assembly for a rotary combine |
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US (5) | US6358142B1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD735772S1 (en) * | 2012-12-21 | 2015-08-04 | Cnh Industrial America Llc | Concave insert |
EP3075226A1 (en) | 2015-04-02 | 2016-10-05 | Deere & Company | Threshing or separating basket with at least one deconstructable insert |
US20180084728A1 (en) * | 2016-09-26 | 2018-03-29 | Agco Corporation | Threshing apparatus in a combine harvester |
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US10952379B1 (en) * | 2014-03-05 | 2021-03-23 | Kevin J. Kile | Concaves for an agricultural combine |
Families Citing this family (100)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10028778A1 (en) * | 2000-06-15 | 2002-01-31 | Claas Selbstfahr Erntemasch | Separation device on combine harvesters |
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US8854019B1 (en) | 2008-09-25 | 2014-10-07 | Rf Micro Devices, Inc. | Hybrid DC/DC power converter with charge-pump and buck converter |
US9166471B1 (en) | 2009-03-13 | 2015-10-20 | Rf Micro Devices, Inc. | 3D frequency dithering for DC-to-DC converters used in multi-mode cellular transmitters |
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US8315576B2 (en) | 2009-05-05 | 2012-11-20 | Rf Micro Devices, Inc. | Capacitive compensation of cascaded directional couplers |
US8286394B2 (en) | 2009-07-31 | 2012-10-16 | Ctb, Inc. | Integral catwalk support |
US8082809B2 (en) | 2009-10-08 | 2011-12-27 | Pioneer Hi-Bred International, Inc. | Combine harvester and associated method for selectively gathering grain test data |
US8829389B2 (en) | 2009-12-11 | 2014-09-09 | Cnh Industrial America Llc | Helical bar concave |
US8313361B2 (en) * | 2009-12-11 | 2012-11-20 | Cnh America Llc | Helical bar concave |
US8133101B2 (en) * | 2009-12-18 | 2012-03-13 | Agco Corporation | Concave adjustment mechanism |
US8133100B2 (en) * | 2009-12-18 | 2012-03-13 | Agco Corporation | Combine harvester processing system having adjustable concaves on a suspension system |
US8548398B2 (en) | 2010-02-01 | 2013-10-01 | Rf Micro Devices, Inc. | Envelope power supply calibration of a multi-mode radio frequency power amplifier |
US8538355B2 (en) | 2010-04-19 | 2013-09-17 | Rf Micro Devices, Inc. | Quadrature power amplifier architecture |
US8913967B2 (en) | 2010-04-20 | 2014-12-16 | Rf Micro Devices, Inc. | Feedback based buck timing of a direct current (DC)-DC converter |
US8542061B2 (en) | 2010-04-20 | 2013-09-24 | Rf Micro Devices, Inc. | Charge pump based power amplifier envelope power supply and bias power supply |
US8811920B2 (en) | 2010-04-20 | 2014-08-19 | Rf Micro Devices, Inc. | DC-DC converter semiconductor die structure |
US9362825B2 (en) | 2010-04-20 | 2016-06-07 | Rf Micro Devices, Inc. | Look-up table based configuration of a DC-DC converter |
US8947157B2 (en) | 2010-04-20 | 2015-02-03 | Rf Micro Devices, Inc. | Voltage multiplier charge pump buck |
US8515361B2 (en) | 2010-04-20 | 2013-08-20 | Rf Micro Devices, Inc. | Frequency correction of a programmable frequency oscillator by propagation delay compensation |
US9577590B2 (en) | 2010-04-20 | 2017-02-21 | Qorvo Us, Inc. | Dual inductive element charge pump buck and buck power supplies |
US8983410B2 (en) | 2010-04-20 | 2015-03-17 | Rf Micro Devices, Inc. | Configurable 2-wire/3-wire serial communications interface |
US8811921B2 (en) | 2010-04-20 | 2014-08-19 | Rf Micro Devices, Inc. | Independent PA biasing of a driver stage and a final stage |
US8699973B2 (en) | 2010-04-20 | 2014-04-15 | Rf Micro Devices, Inc. | PA bias power supply efficiency optimization |
US8913971B2 (en) | 2010-04-20 | 2014-12-16 | Rf Micro Devices, Inc. | Selecting PA bias levels of RF PA circuitry during a multislot burst |
US8842399B2 (en) | 2010-04-20 | 2014-09-23 | Rf Micro Devices, Inc. | ESD protection of an RF PA semiconductor die using a PA controller semiconductor die |
US9030256B2 (en) | 2010-04-20 | 2015-05-12 | Rf Micro Devices, Inc. | Overlay class F choke |
US9008597B2 (en) | 2010-04-20 | 2015-04-14 | Rf Micro Devices, Inc. | Direct current (DC)-DC converter having a multi-stage output filter |
US8831544B2 (en) | 2010-04-20 | 2014-09-09 | Rf Micro Devices, Inc. | Dynamic device switching (DDS) of an in-phase RF PA stage and a quadrature-phase RF PA stage |
US8571492B2 (en) | 2010-04-20 | 2013-10-29 | Rf Micro Devices, Inc. | DC-DC converter current sensing |
US8706063B2 (en) | 2010-04-20 | 2014-04-22 | Rf Micro Devices, Inc. | PA envelope power supply undershoot compensation |
US9553550B2 (en) | 2010-04-20 | 2017-01-24 | Qorvo Us, Inc. | Multiband RF switch ground isolation |
US8565694B2 (en) * | 2010-04-20 | 2013-10-22 | Rf Micro Devices, Inc. | Split current current digital-to-analog converter (IDAC) for dynamic device switching (DDS) of an RF PA stage |
US8983407B2 (en) | 2010-04-20 | 2015-03-17 | Rf Micro Devices, Inc. | Selectable PA bias temperature compensation circuitry |
US8731498B2 (en) | 2010-04-20 | 2014-05-20 | Rf Micro Devices, Inc. | Temperature correcting an envelope power supply signal for RF PA circuitry |
US9900204B2 (en) | 2010-04-20 | 2018-02-20 | Qorvo Us, Inc. | Multiple functional equivalence digital communications interface |
US8712349B2 (en) | 2010-04-20 | 2014-04-29 | Rf Micro Devices, Inc. | Selecting a converter operating mode of a PA envelope power supply |
US8559898B2 (en) | 2010-04-20 | 2013-10-15 | Rf Micro Devices, Inc. | Embedded RF PA temperature compensating bias transistor |
US8989685B2 (en) | 2010-04-20 | 2015-03-24 | Rf Micro Devices, Inc. | Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry |
US9077405B2 (en) | 2010-04-20 | 2015-07-07 | Rf Micro Devices, Inc. | High efficiency path based power amplifier circuitry |
US9184701B2 (en) | 2010-04-20 | 2015-11-10 | Rf Micro Devices, Inc. | Snubber for a direct current (DC)-DC converter |
US9048787B2 (en) | 2010-04-20 | 2015-06-02 | Rf Micro Devices, Inc. | Combined RF detector and RF attenuator with concurrent outputs |
US8958763B2 (en) | 2010-04-20 | 2015-02-17 | Rf Micro Devices, Inc. | PA bias power supply undershoot compensation |
US9214865B2 (en) | 2010-04-20 | 2015-12-15 | Rf Micro Devices, Inc. | Voltage compatible charge pump buck and buck power supplies |
US8942650B2 (en) | 2010-04-20 | 2015-01-27 | Rf Micro Devices, Inc. | RF PA linearity requirements based converter operating mode selection |
US8942651B2 (en) | 2010-04-20 | 2015-01-27 | Rf Micro Devices, Inc. | Cascaded converged power amplifier |
US9214900B2 (en) | 2010-04-20 | 2015-12-15 | Rf Micro Devices, Inc. | Interference reduction between RF communications bands |
CN101884274A (en) * | 2010-07-02 | 2010-11-17 | 张春平 | Corn harvesting threshing roller |
US8721411B2 (en) * | 2011-03-25 | 2014-05-13 | Agco Corporation | Axial flow disrupter |
US8628390B2 (en) * | 2011-04-19 | 2014-01-14 | Cnh America Llc | Support system for separator grates of a harvester |
RU2486743C2 (en) * | 2011-07-21 | 2013-07-10 | Общество с ограниченной ответственностью "Комбайновый завод "Ростсельмаш" | Method of adjustment of threshing gap in threshing-separating device of rotary type with rotating deck and device for its implementation |
US8454416B1 (en) * | 2011-09-09 | 2013-06-04 | Donald J. Estes | Concave with an array of longitudinally notched spaced apart threshing elements |
CA2852938A1 (en) | 2011-10-21 | 2013-04-25 | Pioneer Hi-Bred International, Inc. | Combine harvester and associated method for gathering grain |
WO2013082236A1 (en) * | 2011-11-29 | 2013-06-06 | Agco Corporation | Constant pressure concave assembly in a combine harvester processing system |
US9065505B2 (en) | 2012-01-31 | 2015-06-23 | Rf Micro Devices, Inc. | Optimal switching frequency for envelope tracking power supply |
US9215845B2 (en) * | 2012-09-19 | 2015-12-22 | Agco Corporation | Aggressive grate for combine harvester |
US9179603B2 (en) * | 2012-12-20 | 2015-11-10 | Agco Corporation | Combine cleaning system without a shaking sieve |
DE102013100057B4 (en) * | 2013-01-04 | 2021-10-07 | Claas Selbstfahrende Erntemaschinen Gmbh | Threshing device |
RU2527532C1 (en) * | 2013-05-13 | 2014-09-10 | Общество с ограниченной ответственностью "Комбайновый завод "Ростсельмаш" | Rotary grain combine harvester |
BE1021166B1 (en) * | 2013-11-20 | 2016-01-29 | Cnh Industrial Belgium Nv | VILLAGE SYSTEM AND HARVESTING METHOD |
US9723791B1 (en) * | 2014-03-05 | 2017-08-08 | Kevin J. Kile | Concaves for an agricultural combine |
GB201504031D0 (en) | 2015-03-10 | 2015-04-22 | Agco Int Gmbh | Axial-flow crop processor in a combine harvester |
US9554519B2 (en) * | 2015-04-30 | 2017-01-31 | Cnh Industrial America Llc | Agricultural harvester concave adjustment system and method |
BR102016008710B1 (en) * | 2015-05-29 | 2021-06-15 | Cnh Industrial Belgium Nv | AGRICULTURAL HARVEST AND METHOD FOR LOADING A CONCAVE INTO A FRAME ASSEMBLY |
US9775296B2 (en) * | 2015-06-04 | 2017-10-03 | Cnh Industrial America Llc | Agricultural concave having a component coated with a high hardness material |
US9763390B2 (en) * | 2015-10-16 | 2017-09-19 | Cnh Industrial America Llc | Latch mechanism for agricultural harvester concaves |
US10716259B2 (en) * | 2015-12-14 | 2020-07-21 | Tribine Industries, LLC | Three section threshing concave configuration and adjustment mechanism for an agricultural harvesting combine |
BR102016024420B1 (en) * | 2016-10-19 | 2021-08-24 | Cnh Industrial Brasil Ltda | THRESHING MODULE FOR AN AGRICULTURAL AXIAL FLOW HARVEST AND AGRICULTURAL AXIAL FLOW HARVEST |
US10412896B2 (en) * | 2016-11-15 | 2019-09-17 | Cnh Industrial America Llc | System and method for installing separator grates within an agricultural combine |
EP3554216B1 (en) * | 2016-12-16 | 2021-09-08 | AGCO Corporation | Adjustable stuffer chute |
US10602667B2 (en) * | 2017-06-09 | 2020-03-31 | Deere & Company | Combine harvester concave assembly and attachment method |
US11317566B2 (en) | 2017-06-23 | 2022-05-03 | Thrashmaster Combines, LLC | Universal threshing concave for an agricultural combine |
DE102017210710A1 (en) * | 2017-06-26 | 2018-12-27 | Deere & Company | Threshing or separating basket for the grain harvest |
CN107155532B (en) * | 2017-07-07 | 2023-07-14 | 常州常发重工科技有限公司 | Concave plate gap adjusting device, threshing device and harvester |
US10412895B2 (en) * | 2017-08-02 | 2019-09-17 | Kondex Corporation | Multi-thresh concave section for rotary combine |
CN109379991A (en) * | 2017-08-07 | 2019-02-26 | 中联重机股份有限公司 | Grain combine and its installed threshing separator |
GB201715633D0 (en) * | 2017-09-27 | 2017-11-08 | Agco Int Gmbh | Concave adjustment system in a combine harvester twin axial-flow crop processor |
US10575468B2 (en) * | 2017-11-17 | 2020-03-03 | Cnh Industrial America Llc | Apparatus for setting concave clearance and pinch point in a combine harvester |
US10653068B2 (en) * | 2018-02-21 | 2020-05-19 | Cnh Industrial America Llc | Adjustment and suspension device for concaves |
US10993375B2 (en) * | 2018-06-19 | 2021-05-04 | Ecomill, Llc | Centrifugal scattering device |
US10639645B2 (en) | 2018-06-19 | 2020-05-05 | Ecomill, Llc | Method for separating fine fractures and coarse fractures using a vacuum |
US11497171B2 (en) | 2018-06-26 | 2022-11-15 | Kondex Corporation | Concave with adjustable openings |
EP3831190A4 (en) * | 2018-07-30 | 2023-03-01 | Kubota Corporation | Combine |
CN109645547B (en) * | 2019-01-25 | 2022-02-01 | 云南烟叶复烤有限责任公司 | Leaf threshing method adopting dynamic adjustment frame fence threshing |
US20220279712A1 (en) * | 2021-03-03 | 2022-09-08 | Fecon, Llc | Apparatus for land clearing and preparation having interchangeable chamber inserts |
US11877538B1 (en) * | 2022-08-30 | 2024-01-23 | Calmer Holding Company, Llc | Threshing grains and legumes utilizing concaves with adjustable openings |
Family Cites Families (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US740215A (en) * | 1903-09-29 | William E Bartholow | Support for concaves. | |
US132017A (en) | 1872-10-08 | Improvement in concaves for corn-shellers | ||
US318825A (en) | 1885-05-26 | Concave for clover-h ullers | ||
US489724A (en) | 1893-01-10 | Territory | ||
US685107A (en) | 1901-02-25 | 1901-10-22 | Reeves & Co | Means for supporting and adjusting concaves. |
US755152A (en) | 1903-04-04 | 1904-03-22 | Manna Keller | Concave for threshing-machines. |
US788088A (en) | 1904-11-09 | 1905-04-25 | Jacob F Berndt | Concave and cylinder for threshing-machines. |
US903054A (en) | 1907-07-09 | 1908-11-03 | John O Carlson | Threshing-machine. |
US896097A (en) | 1907-09-23 | 1908-08-18 | Michael Flynn | Thresher-concave. |
US918285A (en) | 1908-05-02 | 1909-04-13 | Charles W Clark | Yielding concave for threshers. |
US1095693A (en) | 1913-10-13 | 1914-05-05 | Nat Automatic Concaves And Tooth Company | Concaves for thresher-cylinders. |
US1138835A (en) | 1914-05-16 | 1915-05-11 | Alfred F Youngberg | Threshing-machine. |
US1260140A (en) | 1916-10-06 | 1918-03-19 | James G Buchanan | Threshing-machine. |
US1581835A (en) | 1925-10-01 | 1926-04-20 | Brown Cecil | Adjustable concave |
US2053148A (en) | 1934-05-26 | 1936-09-01 | James A James | Threshing machine |
US2743078A (en) | 1953-12-17 | 1956-04-24 | Jordan Walter | Suction device for the transfer of liquid from one container to another |
US2867218A (en) | 1954-02-26 | 1959-01-06 | Moullec Jean | Thresher having angularly adjustable concave |
US2794438A (en) | 1954-06-10 | 1957-06-04 | Case Co J I | Adjustable concave having shear pin |
US2821198A (en) | 1955-09-19 | 1958-01-28 | Allis Chalmers Mfg Co | Thresher having reversible type concave |
US3454014A (en) | 1966-09-07 | 1969-07-08 | Harold Blumhardt | Automatic concave release device |
US3470881A (en) | 1966-10-20 | 1969-10-07 | Int Harvester Co | Accessible concave |
US3512534A (en) | 1966-12-19 | 1970-05-19 | Clayson Nv | Suspension of the concave of combines |
US3547129A (en) | 1967-10-23 | 1970-12-15 | Massey Ferguson Ind Ltd | Adjustable concave |
US3568682A (en) | 1969-09-17 | 1971-03-09 | Int Harvester Co | Grate for axial flow combine |
US3631862A (en) | 1970-06-30 | 1972-01-04 | Sperry Rand Corp | Supporting and adjusting means for agricultural machines such as combine harvesters |
US3742682A (en) | 1971-03-19 | 1973-07-03 | A Ligutom | Olan smog device |
US3696815A (en) | 1971-12-20 | 1972-10-10 | Sperry Rand Corp | Detachable side plate for a threshing and separating unit of an axial flow combine |
US3871384A (en) | 1973-06-29 | 1975-03-18 | Int Harvester Co | Removable concave for an axial flow-type combine and adjusting means therefor |
DE2355792A1 (en) | 1973-11-08 | 1975-05-22 | Sperry Rand Corp | THRESHOLDER ADJUSTMENT DEVICE FOR COMBINE |
US3957058A (en) | 1975-03-14 | 1976-05-18 | Sperry-New Holland | Detachable mount for concave of axial flow combine |
US4004404A (en) | 1976-03-01 | 1977-01-25 | Sperry Rand Corporation | Rotary combine with improved concave |
US4018232A (en) | 1976-04-01 | 1977-04-19 | Sperry Rand Corporation | Material distribution means for concave of rotary combine |
GB1544188A (en) * | 1976-05-11 | 1979-04-11 | Clayson Nv | Combine harvesters |
US4031901A (en) | 1976-06-07 | 1977-06-28 | Sperry Rand Corporation | Concave for an axial flow type combine |
US4078571A (en) | 1976-07-14 | 1978-03-14 | Sperry Rand Corporation | Separating unit for combine harvesters |
US4075823A (en) | 1976-07-14 | 1978-02-28 | Sperry Rand Corporation | Combine harvester |
US4117849A (en) * | 1976-09-20 | 1978-10-03 | Versatile Manufacturing Ltd. | Rotary combine |
CA1090670A (en) * | 1978-10-31 | 1980-12-02 | White Motor Corporation Of Canada Limited | Low profile axial flow combine |
JPS55153846A (en) * | 1979-05-17 | 1980-12-01 | Aisan Ind Co Ltd | Carburetor for laminar suction gas |
CA1132026A (en) * | 1979-08-13 | 1982-09-21 | Versatile Cornat Corporation | Rotary combine |
DE3042732A1 (en) | 1979-11-14 | 1981-05-27 | Sperry N.V., Zedelgem | HARVESTER |
DE2950722C2 (en) | 1979-12-17 | 1982-07-08 | Deere & Co., Moline, Ill., US, Niederlassung Deere & Co. European Office, 6800 Mannheim | Adjusting device for the concave of an axial flow combine harvester |
DE3013113A1 (en) | 1980-04-03 | 1981-10-08 | Claas Ohg, 4834 Harsewinkel | SCHUETTLERLOS SELF-DRIVING COMBINATION |
US4398745A (en) * | 1981-06-01 | 1983-08-16 | International Harvester Co. | Three point hitch lower link claw |
US4375221A (en) | 1981-06-10 | 1983-03-01 | Sperry Corporation | Adjustable support for concaves |
EP0097389B1 (en) | 1982-06-19 | 1986-06-04 | Sperry N.V. | Combine harvesters |
US4607480A (en) | 1985-04-16 | 1986-08-26 | Glavnoe Spetsializirovannoe Konstruktorskoe Bjuro Po Mashinam Uborki Zernovykh Kultur I Samokhodnykh Shassi | Axial-flow combine |
US4711252A (en) * | 1986-04-07 | 1987-12-08 | New Holland Inc. | Method and apparatus for mounting concaves |
US4711075A (en) | 1986-05-01 | 1987-12-08 | New Holland Inc. | Integrally mounted positionable concave extension |
AT385171B (en) | 1986-07-25 | 1988-02-25 | Wintersteiger Gmbh & Co | HARVESTER |
JPS63219366A (en) | 1987-03-09 | 1988-09-13 | 日本たばこ産業株式会社 | Apparatus for adjusting gap of slit parts and bone removing machine having said apparatus incorporated therein |
US4802496A (en) | 1987-05-19 | 1989-02-07 | Deere & Company | Agricultural concave adjustment means |
SU1498427A1 (en) | 1987-07-07 | 1989-08-07 | Проектное Конструкторско-Технологическое Бюро "Краснодарское" Агропромышленного Комитета Краснодарского Края | Mechanism for regulating the concave of thrasher |
BR8707838A (en) | 1987-08-25 | 1989-10-03 | Gol Sp K Bjuro Mashinam Dlya U | GRAIN HARVESTER COMBINATION DEBULATOR UNIT, AXIAL |
SU1542477A1 (en) | 1988-04-20 | 1990-02-15 | Всесоюзный Научно-Исследовательский Институт Риса | Threshing deck |
US4882496A (en) | 1988-04-29 | 1989-11-21 | Baxter International Inc. | Apparatus for exchanging and irradiating tubing connections |
DD280024A1 (en) * | 1989-02-20 | 1990-06-27 | Fortschritt Veb K | DEVICE FOR ADJUSTING THE DRESCHING AND DISK BASKET |
US4988328A (en) * | 1989-03-06 | 1991-01-29 | Maeda Industries, Ltd. | Bicycle multiple chainwheel |
DE3914962A1 (en) | 1989-05-06 | 1990-11-08 | Claas Ohg | HARVESTER |
US5342239A (en) | 1991-05-10 | 1994-08-30 | Deere & Company | Operation parameters for an axial separator |
JPH05153846A (en) * | 1991-11-29 | 1993-06-22 | Iseki & Co Ltd | Concave screen of threshing apparatus |
DE4218610C2 (en) | 1992-06-05 | 1994-06-16 | Maehdrescherwerke Ag | Adjustment device for a separating basket |
US5489239A (en) | 1994-09-15 | 1996-02-06 | Case Corporation | Rotary combine |
DE19520463A1 (en) | 1995-06-03 | 1996-12-05 | Claas Ohg | Self-propelled combine with adjustable concave |
US5569080A (en) | 1995-07-06 | 1996-10-29 | Estes; Don | Crop straw flow disruption device for use on crop harvesting machine separation grate |
US5613907A (en) | 1995-09-22 | 1997-03-25 | Deere & Company | Lightweight concave having removable grids |
US5919087A (en) | 1997-11-06 | 1999-07-06 | New Holland North America, Inc. | Concave latch mechanism for an agricultural combine |
US6119442A (en) * | 1999-05-14 | 2000-09-19 | Case Corporation | Combine setting autoadjust with machine vision |
US6193604B1 (en) * | 1999-07-07 | 2001-02-27 | Deere & Company | Concave for an agricultural combine |
US6257977B1 (en) * | 1999-08-20 | 2001-07-10 | Deere & Company | Rotary combine having a rotor axis divergent from a rotor housing axis |
-
2000
- 2000-02-14 US US09/503,512 patent/US6358142B1/en not_active Expired - Lifetime
-
2001
- 2001-09-27 US US09/963,614 patent/US6485365B2/en not_active Expired - Lifetime
- 2001-09-27 US US09/963,615 patent/US6443835B1/en not_active Expired - Lifetime
- 2001-09-27 US US09/963,617 patent/US6503142B2/en not_active Expired - Lifetime
-
2002
- 2002-06-19 US US10/176,136 patent/US6530833B2/en not_active Expired - Lifetime
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US10390490B1 (en) * | 2014-03-05 | 2019-08-27 | Kevin J. Kile | Concaves for an agricultural combine |
US10440893B2 (en) * | 2014-03-05 | 2019-10-15 | Kevin J. Kile | Concaves for an agricultural combine |
US10952379B1 (en) * | 2014-03-05 | 2021-03-23 | Kevin J. Kile | Concaves for an agricultural combine |
EP3075226A1 (en) | 2015-04-02 | 2016-10-05 | Deere & Company | Threshing or separating basket with at least one deconstructable insert |
DE102015205992A1 (en) | 2015-04-02 | 2016-10-06 | Deere & Company | Threshing or separating basket with at least one removable insert |
US20180084728A1 (en) * | 2016-09-26 | 2018-03-29 | Agco Corporation | Threshing apparatus in a combine harvester |
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US20020055377A1 (en) | 2002-05-09 |
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US6358142B1 (en) | 2002-03-19 |
US6503142B2 (en) | 2003-01-07 |
US20020160822A1 (en) | 2002-10-31 |
US6530833B2 (en) | 2003-03-11 |
US20020055378A1 (en) | 2002-05-09 |
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