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    • 专利摘要:
    metering member for a pressure differential meter a metering member (100) for a meter having a sidewall (104) formed with an axially and radially outwardly enlarged rim portion (112) is provided. a plurality of openings (114) extend through the portion to which the seed is adhered. The metering member is oriented at a vertical angle such that an upper portion of the metering member extends beyond a lower portion of the metering member. This orientation allows a seed distribution system to extend into the measuring member and cooperate with the suspended measuring member to remove seeds from it.
    公开号:BR112013024408B1
    申请号:R112013024408-9
    申请日:2012-03-23
    公开日:2018-12-11
    发明作者:Elijah B. Garner；Michael E. Friestad；Nathan A. Mariman；Lee E. Zumdome
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    (54) Title: SEED DISPENSER FOR A PRESSURE DIFFERENTIAL SEED DISTRIBUTOR (73) Holder: DEERE & COMPANY, Companhia Norte Americana. Address: ONE JOHN DEERE PLACE, MOLINE, ILLINOIS 61265, UNITED STATES OF AMERICA (US) (72) Inventor: ELIJAH B. GARNER; MICHAEL E. FRIESTAD; NATHAN A. MARIMAN; LEE E. ZUMDOME.
    Validity Period: 20 (twenty) years from 03/23/2012, subject to legal conditions
    Issued on: 12/11/2018
    Digitally signed by:
    Liane Elizabeth Caldeira Lage
    Director of Patents, Computer Programs and Topographies of Integrated Circuits / 20 “SEED DOSER FOR A PRESSURE DIFFERENTIAL SEED DISTRIBUTOR”
    Field of Invention [0001] The sequence refers to an air pressure differential seed distributor and in particular to a seed meter for a meter.
    Fundamentals of the Invention [0002] Various types of metering / measuring devices have been developed which use an air pressure differential, both vacuum and positive pressure, to adhere seed to a seed metering device. The seed dispenser collects seeds from a seed cluster and sequentially discharges single seeds. (In some cases, multiple seeds can be unloaded at a time.) A common type of feeder is shown in US patent 5,170,909. In this, a seed disk 48 contained in a housing is used to dose the seed. The seed cluster is positioned on one side of the disk at the bottom of the disk while a vacuum is applied to the opposite side of the disk. As the disk is rotated, individual seeds from the seed cluster are vacuum-adhered to the openings that extend through the disk. When the seed reaches a desired release position, the vacuum is terminated, allowing the seed to fall from the disc through a seed tube into a groove formed in the soil below.
    [0003] Flexible belts have also been used in an air pressure differential seed distributor. An example is shown in US patent application US 2010/0192818 A1. In this, a flexible belt having an arrangement of openings in it is movable along a path in a housing. A seed cluster is formed on one side of the belt. Vacuum applied to the opposite side of the belt along part of the belt path adheres seed to the openings, allowing the
    Petition 870180068158, of 08/06/2018, p. 7/53 / 20 belt move the seed to a released position where the vacuum is cut. The seed then falls off or is removed from the belt.
    [0004] When seed falls by gravity from the feeder through the seed tube, it can be difficult to maintain consistent and accurate seed spacing at planting speeds greater than about 8 kph (5 mph). To maintain spacing accuracy, a seed distribution system that controls the seed as the seed moves from the meter to the soil is desirable. Such a distribution system is shown in US patent application US 2010/0192819-A1. With such a distribution system, the removal of seed from the disk of US patent US 5,170,909 to the distribution system is difficult to achieve in a consistent manner. While seed withdrawal can be improved with the use of a belt meter, there is still a need for more consistent and more reliable seed withdrawal from the meter to the distribution system. An improved seed seed meter and meter can improve seed withdrawal to the distribution system.
    Summary of the Invention [0005] A seed dispenser for a pressure differential seed dispenser is provided having a bowl shaped body having a base part and a side wall extending from the base part. The side wall ends at an outer edge and has an inner surface and an outer surface. The side wall additionally has a rim portion adjacent to the outer edge that extends radially outwardly and axially with a plurality of openings that extend through the side wall.
    [0006] The seed dispenser cooperates with a seed distribution system that moves seed from the seed dispenser to the soil.
    Petition 870180068158, of 08/06/2018, p. 8/53 / 20
    Brief Description of the Drawings [0007] Fig. 1 is a perspective view of a common agricultural planter;
    [0008] Fig. 2 is a side perspective view of a planting unit frame, seed distribution system and meter;
    [0009] Fig. 3 is an enlarged perspective view of the distribution system and meter drives;
    [00010] Fig. 4 is a perspective view of the meter with the cover open, illustrating the seed dispenser;
    [00011] Fig. 5 is an exploded perspective view of the meter of Fig. 4;
    [00012] Fig. 6 is a perspective view of the seed dispenser of Fig. 4;
    [00013] Fig. 7 is a lateral cross section of the seed doser in Fig. 6 illustrating the orientation of the seed doser installed in a meter mounted on a planting unit;
    [00014] Fig. 8 is a fragmentary cross section of an alternative seed dispenser;
    [00015] Fig. 9 is an elevation view of the interior of the seed dispenser of Fig. 6;
    [00016] Fig. 10 is a side sectional view of the seed distribution and seed dosing system;
    [00017] Fig. 11 is a sectional view of the seed withdrawal from the seed dispenser for the distribution system including the brush belt of the distribution system;
    [00018] Fig. 12 is a sectional view similar to Fig. 1 without the timing belt brush;
    [00019] Fig. 13 is a schematic illustration of the seed input direction for the brush belt;
    Petition 870180068158, of 08/06/2018, p. 9/53 / 20 [00020] Fig. 14 is a schematic illustration of the direction of travel of the seed in the seed feeder and in the distribution system in the seed release position of the seed feeder;
    [00021] Fig. 15 is a side sectional view of the seed distribution and dosing system on removal without the brush belt;
    [00022] Fig. 16 is a perspective view from the inside of the meter housing;
    [00023] Fig. 17 is a side sectional view of the seed meter and metering housing illustrating the seed cluster formed by the seed metering and housing;
    [00024] Fig. 18 is a side sectional view similar to Fig. 17 illustrating a prior art meter with a disc seed dispenser;
    [00025] Fig. 19 is a perspective view of the lower end of the distribution system; and [00026] Figs. 20 and 21 are viewed in perspective from an alternative seed dispenser.
    Detailed Description of the Preferred Realization [00027] An agricultural sowing machine 10 is shown in Fig. 1 as a row crop planter. The sowing machine 10 has a central frame 12 on which a plurality of individual planting units are mounted 14. The sowing machine 10 has a front to back direction shown by the arrow 15 and a transverse direction shown by the arrow
    17. Each planting unit 14 is coupled to the central frame 12 by a parallel connection 16 so that the individual planting units can move up and down to a limited degree relative to the frame 12. Large storage tanks 13 hold seed which is pneumatically distributed to a mini hopper in each planting unit. Each planting unit 14 has a frame member 18 (Fig. 2) to which
    Petition 870180068158, of 08/06/2018, p. 10/53 / 20 the planting unit components are assembled. The frame member 18 includes a pair of upright arms 20 at the front end thereof. The arms 20 are coupled to the rear ends of the parallel connection 16. Grooving discs (not shown) are attached to the shaft 22 in a known manner to form an open groove in the soil below the seeding machine in which the seed is deposited. Packing and closing wheels (not shown) are also mounted to the frame member 18 in a manner known to close the furrow over the deposited seed and to firm the soil in the closed furrow. A meter 24 and a seed distribution system 400 are also attached to the frame member 18 of the planting unit.
    [00028] Meter 24 includes a housing 30 (Fig. 3) and a cover 34. Housing 30 and cover 34 are coupled together by complementary articulation features 36 and 38 (see Fig. 5) in the housing and in coverage respectively. The hinge feature 36 includes a pivot pin 37 coupled to the housing while feature 38 is a fully formed hook that wraps around the pivot pin allowing the pivot cover 34 around the pin 37 axis. An elastomeric lock member 40 it is coupled to the housing 30 and has an enlarged part 42 which is seated in a socket 44 formed in the cover to keep the cover in a closed position in the housing 30.
    [00029] The housing 30 is formed with a second hinge element in the form of a pivot pin 46 (Fig. 3). The pivot pin 46 is seated on a hook member 48 (Fig. 4) of the mounting frame 50 attached to the frame member 18. This allows the meter 24 to pivot in relation to the planting unit frame member 18 around an axis 52. A drive spindle 54 is carried by the housing 30 and has a drive hub 56 (Fig. 5) at the end of it. The spindle 54 is coupled to the output shaft 58 of the electric motor 60 to activate the meter when in
    Petition 870180068158, of 08/06/2018, p. 11/53 / 20 mounted position shown in Fig. 3. Meter 24 is coupled to the distribution system by a locking mechanism 68 including a metal rod 70 having a hook at one end seated in an opening in meter housing 30 when caught. The delivery system additionally has a mounting hook 72, shown partially in Fig. 2, which attaches to the planting unit frame member 18 to support the delivery system.
    [00030] The distribution system 400 is driven by an electric motor 80, also transported by the mounting frame 50. The output shaft of the motor 80 is connected to the distribution system via a shallow-angle drive 82. While electric motors have been shown to activate both the meter and the seed distribution system, it will be perceived by the person skilled in the art that other types of engines, such as hydraulic, pneumatic, etc. can be used as well as various types of mechanical drive systems.
    [00031] With reference to Fig. 6, a seed meter 100 of the meter is shown in greater detail. This seed dispenser 100 is shown as a single piece, body shaped in a concave basin. The bowl-shaped body has a base part 102 from which a side wall 104 extends. The side wall 104 ends at an outer edge 106. The side wall has a radially inner surface 108 and a radially outer surface 110. Adjacent to the outer edge 106, the side wall has a rim part 112 shown by the support in Fig. 6. The rim part 112 extends radially outwardly and axially towards the outer edge 106. In the rim part 112, there is an annular arrangement of openings 114 that extends through the side wall between the inner and outer surfaces 108 and 110. The seed dispenser 100 is mounted in the meter housing for rotation in the direction of arrow 118 in Fig. 6. In operation, as the seed dispenser rotates, individual seeds from
    Petition 870180068158, of 08/06/2018, p. 12/53 / 20 a seed cluster 120 located in a bottom part of the seed dispenser are adhered to the openings 114 on the inner surface 108 of the side wall and sequentially transported upwards to a released position 164 in an upper part of the seed dispenser . Thus, the inner surface is also known as the seed side of the seed dispenser. A series of raised projections or features, such as blocks 116, extend from the inner surface 108 of the side wall 104 typically with a block located behind each opening 114 in the direction of rotation. Each block forms a confrontation surface 124 behind the associated opening in the direction of rotation to push the seed adhered to the opening into the distribution system as described above. As explained above, it is the ring portion 112 of the seed dispenser that performs the function of removing individual seeds from the seed cluster and sequentially moving seed to the release position to supply seed individually to the seed distribution system 400. The seed portion base 102 of the seed dispenser contains a central drive opening 130 (Fig. 5) used to mount the seed dispenser on a rotary drive hub 56 for rotation about axis 132 in a similar manner to mounting a seed disk flat seed on a meter as is well known. When mounted in the housing 30, the seed doser 100 cooperates with the housing to form a passageway to maintain the seed cluster 120 as more fully described below. Axis 132 is inclined both to a horizontal plane as well as to a vertical plane that extends back and forth from the seeding machine and a vertical plane that extends transversely to the seeding machine.
    [00032] With reference to Fig. 7, the seed dispenser 100 is shown in a sectional view. The base part 102 is generally planar while the rim part 112 of the inner surface of the side wall 104 is
    Petition 870180068158, of 08/06/2018, p. 13/53 / 20 enlarged outwards, that is, extending both radially outwards and axially. As shown in Fig. 7, the rim part is a tapered trunk.
    [00033] Alternatively, as shown in Fig. 8 in conjunction with a seed doser side wall 104 ', the inner surface rim portion of the side wall 112 can be spherical in shape. In addition, while the rim part 112 has been shown to be enlarged outwardly, the rim part in general can be cylindrical without any outward widening, i.e., extending only axially.
    [00034] Seed dispenser 100 can be formed as one piece or constructed of multiple pieces. The seed dispenser can be molded from plastic more easily such as polycarbonate, nylon, polypropylene or urethane. However, other plastics can be used as well as other materials such as metal, etc. Seed dispenser 100 is sufficiently rigid to be self-supporting without additional support structure. This is in contrast to the flexible belt seed dispenser shown in US patent 2,960,258 where the belt member is preferably of a flexible elastomeric material and is supported within a support ring. Being self-sustaining, the seed dispenser does not need any support structure to maintain a shape. As a self-sustaining, the seed dispenser can be rigid or the seed dispenser can be flexible to change shape when acted in a similar manner to the flexible seed disk of US Patent No. 7,661,377.
    [00035] As mentioned earlier, the seed feeder 100 can be mounted to a drive hub through the central drive opening 130 on the base part 102. Mounting through the central drive opening 130 provides both mounting support for the feeder as well as the rotary drive of the seed dispenser.
    Petition 870180068158, of 08/06/2018, p. 14/53 / 20 [00036] Alternatively, the support for the seed dispenser can be provided on the outer surface of the side wall. A groove can be formed on the outer surface of the side wall to receive rollers that support the seed dispenser. If the groove is also formed with drive teeth, one of the rollers can be driven by a motor to rotate the seed dispenser. With such possible alternative arrangements, it is not necessary for the seed dispenser to have a base part. The seed measurement function is performed by the side wall and thus the side wall is the only necessary part of the seed dispenser.
    [00037] As shown in Fig. 7, the seed dispenser 100, when mounted in the meter housing, is oriented in a vertical tilt as shown. In this orientation, the openings 114 are on a plane 150 inclined at an angle a to the vertical. In this orientation, an upper portion 148 of the seed dispenser is suspended or extends beyond a lower portion 154. As described above, this allows access to the upper portion 148 of the seed dispenser for the mechanical seed delivery system 400. As shown, the angle α is approximately 24 °. However, any angle will suffice as long as the top 148 extends beyond the bottom enough to access the seed delivery system from below the seed dispenser in the seed release position.
    [00038] The seed cluster 120 is formed at the bottom of the seed dispenser 100 as shown in Fig. 9. Vacuum is applied to the outer surface 10, causing individual seeds to adhere to the openings 114 while the openings travel through the seed cluster. seed. As the seed dispenser rotates as shown by arrow 118, the seed is moved upward to a released position 164 at the top 148 of the seed dispenser. The release position is just over the top or 12 o'clock position on the circular seed travel path
    Petition 870180068158, of 08/06/2018, p. 15/53 / 20 that the seed is moving down somehow in the release position. This facilitates the entry of seed into the distribution system as more fully described below. Also, passing from the top point of the path, the distribution system is displaced from the center in relation to the seed doser, providing clearance between the distribution system and the meter drive. In release position 164, the inner surface of the rim portion of the seed dispenser is facing downwards such that seed is adhered below the seed dispenser or is hung from the seed dispenser. See Fig. 10. The seed delivery system 400 is also positioned below the top of the seed dispenser in release position 164 to pick up the seed from the seed dispenser as shown in Fig. 10.
    [00039] The dispensing system 400 includes a housing 402 having a left side wall 404 (see Fig. 19) and a right side wall 406 (see Fig. 3). The terms left and right are used in relation to the direction of travel of the seeding machine shown by arrow 408. Connecting the right and left side walls together is an edge wall 410. An upper opening 416 is formed in the edge wall and walls sides to allow seeds to enter housing 402. A lower opening 418 is provided at the lower end which forms a discharge location 413 for the seed. A pair of pulleys 420 and 422 are mounted within housing 402. The pulleys support a belt 424 for rotation within the housing. One of the two pulleys is a drive pulley while the other pulley is an intermediate pulley. The belt has a flexible base member 426 for engaging the pulleys. Elongated bristles 428 extend from the base member 426. The bristles are joined to the base member at proximal or radially internal ends of the bristles. Distal or radially external ends 430 of the bristles touch or are close to touching the inner surface of the edge wall of housing 410.
    Petition 870180068158, of 08/06/2018, p. 16/53 / 20 [00040] As shown at the top of Fig. 10, a seed 152 is in the release position in the seed dispenser 100 and has been inserted into bristles 428 of the distribution system. In the release position, the rim portion 112 of the seed doser side wall 104 is generally tangent to the stationary internal surface 412 through which the brush bristles 428 pass. The surface 412 is in a locked part 66 of the housing 30. The surface 412 is a continuation of the inner surface 414 of the distribution system housing 402. Once the seed is captured in the distribution system, the seed moves in the direction of the belt, shown by arrow 417. The direction of travel of the seed immediately by capture by the distribution system 400 is shown by vector 438.
    [00041] Prior to the release of the seed from the seed dispenser, the seed is moving in the direction of vector 160 which is slightly downward towards bristles 428. With reference to Fig. 13, vector 160 of the seed direction is in a angle 161 of about 60 ° to the length of the bristles 428 shown by arrow 176. As shown in Fig. 11, the brush belt is positioned so that the seed enters the bristles at the corner of the brush belt. The brush can be positioned so that the seed enters the brush through the distal ends of the bristles or through the side of the bristles.
    [00042] The relationship between the seed direction vector 160 in the seed dispenser and the seed direction vector 438 when the seed is first on the brush belt is shown in Fig. 14 illustrating the two vectors in the plane that contains both vectors in the release position 164. The angle 163 between the vectors is at least 35 ° and preferably between 50 ° and 80 °. This shows the transverse feed of the seed to the bristles, which means that the seed, before the release position is moving substantially in a different direction than the brush bristles are moving. This is in contrast to the arrangement shown in Fig. 3 of the
    Petition 870180068158, of 08/06/2018, p. 17/53 / 20 US patent application US 2010/0192819-A1 where the seed on the measuring disc in the release is moving in substantially the same direction as the brush bristles. This is also the relationship by which the bristles pass over the inner surface of the side wall in relation to the direction of travel of the seed.
    [00043] Figs. 11 and 12 show a locking member 162 carried by meter housing 30. Locking member 162 is positioned adjacent to a seed travel path 152 leading to release position 164 and prevents seed movement from the seed dispenser before reach the release position. Once the end has passed the end 174 of the blocking member 162, the seed is free to move with the brush bristles towards the vector 438 in Fig. 10. The blocking member ensures that the seed is fed steadily to the brush belt in the center of the belt, in the width direction, instead of allowing the seed to enter the belt in random positions across the belt width. As shown in Fig. 15, the locking member is located below the side wall 104 of the seed feeder 100 between blocks 116 and the outer edge 106 of the seed feeder. The face surface 124 of blocks 116 pushes seed onto the brush bristles. The blocks or projections 116 travel additionally to the brush bristles, that is, deeper into the bristles from the distal ends, as the projections cross the width of the brush as seen in Fig. 11. Once the seed is in the brush bristles, the seed is swept over the inner surface of the seed feeder, from the openings 114 to the outer edge 106 of the seed feeder in the direction of vector 438. The delivery system can be arranged to sweep the seed in the direction opposite, that is, away from the outer edge 106 of the seed dispenser.
    [00044] To additionally guarantee the consistent release of
    Petition 870180068158, of 08/06/2018, p. 18/53 / 20 seed from the seed doser and removed to the distribution system, an ejector 166, loaded by the cover 34 goes on the outer surface of the rim portion of the seed doser. See Figs. 11, 12 and 15. Ejector 166 is in the form of a star wheel having a number of projections 168. Projections 168 extend to openings 114 from outer surface 110 of side wall 104 and force seed out of openings 114 The ejector is rotated by rotating the seed doser 100 due to the projections 168 that engage the openings 114. The ejector is mounted to the cover 34 by means of a pivot arm 170 and support 171. The ejector 166 is polarized against the doser of seeds by a 172 spring.
    [00045] Turning attention now to Fig. 4, a flexible seal 180 is shown on the inner side of the cover 34. This seal rests against the outer surface 110 of the seed dispenser 100 forming a vacuum chamber inside the interior 182 of the seal. A first part 184 of the seal is spaced radially further off in the seed dispenser than is the second part 186 of the seal. In the area of the sealing of the first part 184, vacuum is applied to the openings 114, causing seeds to adhere to it. There is no vacuum applied to the adjacent openings and outside the seal of the second part 186. A port 188 on the cover 34 is adapted to connect the interior of the cover to a vacuum source in a manner known for a vacuum seed meter. The seed release position 164 is within the vacuum chamber. Thus, the brush belt and the ejector are working in opposition to the vacuum applied to the openings 114 to release the seed from the seed dispenser.
    [00046] With reference to Fig. 16. The interior of housing 30 is shown. The housing includes a central projection 302 for drive spindle 54. The housing also includes an opening 304 for receiving seed from the mini loading funnel, not shown, mounted to the outside of the housing and surrounding the opening 304. Below the opening 304, a
    Petition 870180068158, of 08/06/2018, p. 19/53 / 20 housing wall forms a ramp 306 extending downwards towards the lower end 308 of the housing. The ramp cooperates with the inner surface 108 of the seed dispenser to maintain the seed cluster 120. The housing includes an inward projection 310 forming a cavity 314 (Fig. 17) outside the housing for which the upper end is the system 400 is positioned. The projection is opened at the upper end, forming an observation opening downwards 312 from the inside of the housing to the outside. This opening 312 allows the brush belt 424 to access the inner surface 108 of the seed dispenser and to transport seed from the housing.
    [00047] Fig. 17 illustrates the orientation of the seed feeder and the cooperation of the housing 30 and seed feeder 100 to form a passage for the seed cluster 120 at the lower end of the seed feeder. Fig. 17 shows the orientation of the seed dispenser when the seeding machine 10 is at ground level. At the lower end of the seed dispenser, the side wall 104 is tilted vertically such that the inner surface 108 is at an angle d to a vertical vector 126. As illustrated in Fig. 17, the inner surface is approximately 2 from the vertical. The orientation of the housing adjacent to the seed dispenser, forming the other side of the passage, is not critical. Seed from the seed cluster 120 sits on top of the inner surface 108 and a component of the force of gravity is perpendicular to the inner surface 108. When operating on a hill side, whether the meter is tilted clockwise or counterclockwise, as seen in Fig. 17, the inner surface 108 remains tilted and gravity still has a component perpendicular to the inner surface. This is in contrast to a typical disc meter shown in Fig. 18 with a vertically oriented disc 320 that cooperates with a housing wall 322 for
    Petition 870180068158, of 08/06/2018, p. 20/53 / 20 form a seed cluster 324. If this meter is tilted counterclockwise as noted, seed from the cluster will still rest against the disc. However, if the meter is tilted clockwise, seed from the cluster will fall away from the disk, allowing for decreased measurement performance in terms of the seed being collected by the disk. The meter evaluation showed improved meter performance on a hill when the angle d is as small as 5 and as large as 75 °. Best performance is achieved when the angle d is between 10 ° and 50 ° while optimum performance is in the range of 20 to 40 °. This last strip provides considerable slope of the meter on a hill in any direction before performance begins to decline.
    [00048] At the top end of the seed dispenser, in the release position 164, the inner surface 108 has an angle for a vertical vector downwards 128 in the range of 50 ° to 90 ° with the closest to 90 ° being the best for removing the seed from the seed dispenser onto the brush belt. As shown, the angle f is approximately 68 °. The different orientations of the inner surface 108 in relation to the vertical in the seed passage and in the release position are achieved with a seed doser, that is, rigid. Such variation is not possible with the flat disc seed dispenser shown in Fig. 18.
    [00049] As described above, the seed is adhered to the openings 114 in the seed feeder due to the vacuum applied to the outer surface of the seed feeder creating a pressure differential on opposite sides of the seed feeder. As an alternative to vacuum on the outside of the seed dispenser, the pressure differential can be created by a positive pressure between the housing 30 and the seed dispenser 100. Such a system may require seals between the seed dispenser 100 and the housing 30 to create a positive pressure chamber. In a positive pressure arrangement, cover 34 serves only as a cover for the
    Petition 870180068158, of 08/06/2018, p. 21/53 / 20 rotating seed dispenser.
    [00050] It is possible that more than one seed is adhered to a given opening 114. To prevent more than one seed at a time from being transferred to the brush belt, a pair of double eliminators or single members are attached to the housing 30 along the seed path from the seed cluster to the release position 64. The singular members are in the form of brushes 330 and 332 (Figs. 5 and 9). Brush 330 has bristles that extend substantially axially and brush seed in openings 114 by inward extension from the outer edge 106 of the seed dispenser. The bristles of the brush 330 are of variable length, to engage the seed in several discrete locations along the length of the brush 330. The brush 332 has bristles that extend substantially radially and engaging the inner surface of the seed meter's side wall within the blocks 116 and extend along the side wall to openings 114. Both brushes 330 and 332 act to slightly disturb seeds in the opening and cause excess seed to fall out. Once removed, the excess seed falls back to the seed cluster 120. The brushes can be fixed in position or they can be adjusted to change the degree to which the disturbed seed is brushed in the seed dispenser. A third brush 334 is shown which generally extends radially from the seed dispenser. The brush 334 serves to define a limit for the seed cluster 120. The brushes 330, 332 and 334 are mounted to the housing 30.
    [00051] Turning again to Fig. 10, once the seed is captured or trapped in bristles 428, the distribution system controls the movement of the seed from the meter to the discharge location. The seeds are kept in the bristles such that the seeds cannot move vertically in relation to the bristles 428 or in relation to other seeds in the
    Petition 870180068158, of 08/06/2018, p. 22/53 / 20 distribution system. In particular, during the travel of the seeds along the vertical side of the distribution system, the seeds are kept at least at the top and bottom of the seeds to avoid any relative movement between the seed and the brush belt. Thus, the relative position of the seeds in relation to each other is not affected by the dynamics of the planting unit while moving through a field. The seed is carried out by the bristles from the upper opening 416 to the lower opening 418 with the movement of the seed controlled at all times from the upper opening to the lower opening.
    [00052] The lower opening 418 of the distribution system housing is positioned as close to the bottom 446 of the ditch or seed groove 448 as possible. As shown, the lower opening 418 is near or below the soil surface 432 adjacent to the seed groove. The bottom of the distribution system should be no more than an inch or two, (2.5 to 5 cm) above the ground surface 432. If possible, the bottom end of the distribution system should be below the ground surface 432 The housing edge wall 410 forms an exit ramp 434 in the lower opening 418. The lower opening 418 and the ramp 434 are positioned along the curve in a belt path around the pulley 422. The seed, being transported by distal ends of bristles, increases in linear speed around the pulley 422 as the distal ends of the bristles travel a greater distance around the pulley 422 than the base member 426 of the belt. This speed difference is shown by the two arrows 440 and 442.
    [00053] In the discharge, the seed has a speed shown by the vector V. This speed has a vertical component Vv and a horizontal component VH. The belt is operated at a speed to produce a horizontal speed component VH, that is, approximately equal to, but in the opposite direction of the front speed of the seeding machine
    Petition 870180068158, of 08/06/2018, p. 23/53 / 20 shown by arrow 408. As a result, the horizontal velocity of the seed in relation to the soil is zero or approximately zero. This minimizes the roll of the seed in a seed ditch.
    [00054] Seeds can be inserted into the brush bristles in an essentially infinite number of positions. This allows the brush to be operated at the speed necessary to produce the desired horizontal speed component for the seed, regardless of the seed population. The seed meter, on the other hand, must be operated at a speed, that is, a function of both the forward travel speed of the seeding machine and the desired seed population. As the belt 424 can be loaded with seed in an essentially infinite number of positions, the belt speed can be operated independently of the meter speed. This is not the case with other seed distribution systems, such as those disclosed in US patent 6,681,706 where the distribution system of Fig. 2 has a belt with flights to carry out the seed. The belt speed should be timed to the gauge speed to ensure that one or more flights pass the gauge for each seed that is discharged from the gauge.
    [00055] While it is desirable to match the backward speed of seed to the forward speed of the seeding machine to minimize the relative seed speed to the soil, with some types of seed, it may be necessary to operate the brush belt in a different speed to ensure that the seed is discharged from the brush bristles.
    [00056] The interior of the lower part of the distribution system housing is shown in Fig. 19. The distribution system housing 402 is a two-piece housing having an upper housing member 460 and a lower housing member 462. The lower housing member carries lower pulley 422. lower housing member
    Petition 870180068158, of 08/06/2018, p. 24/53 / 20 has an upwardly extending rod portion 464 that slides into a channel formed by walls 466 and 468 in the upper housing member. Springs, not shown, push down the stem part 464 to polarize the lower housing member down. Brush belt 424, wrapped around pulleys 420 and 422, holds the upper and lower housing members together. The belt 424 is tensioned by the springs that act on the stem part 464. A U-shaped metal strip 470 is attached to the upper housing member 460 and connects the gap 472 between the upper and lower housing members to provide a continuous surface for keep no seed in the housing between the top opening 416 and the bottom opening 418. The metal strip has a tab at the top end of it folded over and inserted into a slot 474 in the upper housing member 460 to hold the metal strip 470 in the place. If necessary, a fastener, such as a nut and screw, can be positioned through the stem part 464 and the upper housing member 460 to secure the upper and lower housing members together.
    [00057] Different measuring members can be used for different types of seed. Seed dispenser 100 is intended for soybeans and other crops planted with an almost closed seed spacing. Maize which is planted at a larger seed spacing uses a seed dispenser 200 shown in Figs. 20 and 21. Seed dispenser 200 is constructed in a similar manner as seed dispenser 100 and similar components are given the same reference numerals with the addition of 100. However, seed dispenser 200 has half the number of openings 214 as the seed dispenser 100. To avoid the need to replace the ejector 166 when changing the measuring members, the seed dispenser 200 has a recess 226 that extends to the side wall 204 on the outer surface 210 of the side wall between each opening 214. The recesses 226 provide liberation for the projections
    Petition 870180068158, of 08/06/2018, p. 25/53 / 20
    168 of the ejector 166 which are arranged to be inserted in each opening 114 of the seed dispenser 100. The recesses 226 are not open to the inner surface 208 of the sidewall 204. Thus there are additional projections 228 on the inner surface of the sidewall 204 between the openings 214. Alternatively, projections 228 and blocks 216 can be formed as a single projection extending from the inner surface 208.
    [00058] Having described the meter and the distribution system, it will be apparent that various modifications can be made without departing from the scope of the attached claims.
    Petition 870180068158, of 08/06/2018, p. 26/53
    权利要求:
    Claims (4)
    [1]
    1. Seed dispenser (100, 200) for a pressure differential seed distributor, consisting of a bowl shaped body having a base part (102) and a side wall (104, 204) that extends axially and radially outwardly from the base part (102), the side wall (104, 204) ending at an outer edge (106) and having an inner surface (108, 208) and an outer surface (110, 210) and the side wall (104, 204) additionally having a rim part (112) adjacent to the outer edge (106) with openings (114) that extend through the side wall (104, 204), whose seed dispenser is configured so that individual seeds from a seed cluster (120) located in a bottom part of the seed dispenser (100, 200) are adhered to the openings (114, 214) on the inner surface (108, 208) of the side wall (104, 204) ), characterized by still consisting of projections (116, 216) extending from the inner surface (108, 208) of the side wall (104, 204) forming a confronting surface (124) following one or more of the openings (114, 214) located behind the associated opening (114) in the direction of rotation of the doser of seeds (100, 200) to push the seed adhered to the opening (114) into a seed distribution system (400).
    [2]
    2. Seed dispenser (100, 200) according to claim 1, characterized by the fact that the rim part (112) of the side wall (104, 204) is a conical trunk.
    [3]
    3. Seed dispenser (100, 200) according to claim 1, characterized in that the rim part (112) of the side wall (104, 204) is spherical stem.
    [4]
    Seed dispenser (100, 200) according to any one of claims 1 to 3, characterized in that it also consists of a recess (226) which extends to the side wall (104, 204) on the external surface (110 , 210) of the side wall (104, 204) between each opening (114, 214).
    Petition 870180068158, of 08/06/2018, p. 27/53
    1/15
    2/15
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    同族专利:
    公开号 | 公开日
    MX337556B|2016-03-09|
    WO2012134995A2|2012-10-04|
    CN103607878B|2016-07-06|
    MX2013011021A|2013-12-06|
    WO2012134995A3|2013-11-14|
    UA112543C2|2016-09-26|
    EP2688386B1|2016-11-02|
    CA2831061A1|2012-10-04|
    RU2605748C2|2016-12-27|
    EP2688386A2|2014-01-29|
    RU2013147646A|2015-04-27|
    EP2688386A4|2015-07-08|
    BR112013024408A2|2016-10-04|
    US8746159B2|2014-06-10|
    CN103607878A|2014-02-26|
    US20120240837A1|2012-09-27|
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    法律状态:
    2018-04-17| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-05-08| B07A| Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]|
    2018-10-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2018-12-11| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/071,886|US8746159B2|2011-03-25|2011-03-25|Metering member for a seed meter|
    US13/071886|2011-03-25|
    PCT/US2012/030281|WO2012134995A2|2011-03-25|2012-03-23|Metering member for a seed meter|
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