FURROW OPENER LINKAGE AND TRANSPORT ORIENTATION

Abstract

A seeding apparatus includes an implement frame and front and rear frame members are pivotally mounted to the implement and furrow openers mounted to each. In an operating position the front and rear furrow openers are engaged in the ground and separated by an operating distance, and can be raised to an idle position where the furrow openers are above the ground and the front and rear furrow openers are separated by an idle distance that is greater than the operating distance. The implement frame has an inner wing pivotally attached to a center frame, and an outer wing pivotally attached to the inner wing. The inner wing section pivots upward and the outer wing section pivots downward supported by a transport wheel. When in the transport position the inner and outer wing sections extend upward from the center frame section and the transport wheel is above the ground.

Claims

1. A seeding apparatus comprising: an implement frame mounted on wheels for travel along the ground in an operating travel direction; front and rear frame members pivotally mounted to the implement frame and extending laterally substantially perpendicular to the operating travel direction; a plurality of front furrow openers mounted on the front frame member and a plurality of rear furrow openers mounted on the rear frame member; wherein the front and rear frame members are movable from an operating position, where the front and rear furrow openers are engaged in the ground and the front and rear furrow openers are separated by an operating distance, to an idle position where the front and rear furrow openers are above the ground and the front and rear furrow openers are separated by an idle distance that is greater than the operating distance.

2. The apparatus of claim 1 wherein the front and rear frame members are mounted to corresponding right and left linkage assemblies connected to the implement frame, and wherein right and left actuators are operative to pivot the corresponding right and left linkage assemblies to move the front and rear frame members between the operating position and the idle position.

3. The apparatus of claim 2 wherein each of the right and left linkage assemblies comprises: a front parallel arm assembly connected between a bracket fixed to the implement frame and the front frame member, and wherein a front upper arm and a front lower arm of the front parallel arm assembly slope forward and down when the front frame member is in the operating position, and the front upper arm and front lower arm slope forward and up when the front frame member is in the idle position; a rear parallel arm assembly connected between the bracket and the rear frame member, and wherein a rear upper arm and a rear lower arm of the rear parallel arm assembly slope rearward and down when the rear frame member is in the operating position, and the rear upper arm and rear lower arm slope rearward and up when the rear frame member is in the idle position.

4. The apparatus of claim 3 wherein: a rear end of the front lower arm is pivotally attached to a lower pivot axis defined by the bracket, and a front end of the rear lower arm is pivotally attached to the lower pivot axis; a rear portion of the front upper arm is pivotally attached to a front upper pivot axis defined by the bracket, and a front portion of the rear upper arm is pivotally attached to a rear upper pivot axis defined by the bracket; wherein the front upper pivot axis and the rear upper pivot axis are at substantially the same distance above the ground; and wherein a forward pivot line between the lower pivot axis and the front upper pivot axis slopes forward at a forward angle with respect to vertical; wherein a rearward pivot line between the lower pivot axis and the rear upper pivot axis slopes rearward at a rearward angle with respect to vertical that is substantially equal to the forward angle.

5. The apparatus of claim 4 wherein the front upper arm is pivotally linked to the rear upper arm by a pivot bar such that vertical movement of one of the front and rear parallel arm assemblies causes substantially the same vertical movement in the other of the front and rear arm assemblies.

6. The apparatus of claim 5 wherein the front upper arm defines a front bar pivot axis rearward and downward from the front upper pivot axis and the rear upper arm defines a rear bar pivot axis forward and upward from the rear upper pivot axis and the pivot bar is pivotally attached to the front and rear bar pivot axes.

7. The apparatus of claim 4 wherein the upper and lower front arms are parallel to each other and pivotally attached at front ends thereof to a front base fixed to the front frame member, the upper and lower rear arms are parallel to each other and pivotally attached at rear ends thereof to a rear base fixed to the rear frame member.

8. The apparatus of claim 7 wherein the actuator is provided by an extendable hydraulic cylinder pivotally attached at one end to the lower pivot axis and pivotally attached at the opposite end thereof to the front base or to the rear base.

9. The apparatus of claim 7 wherein the upper front arm is pivotally attached to the front base at a first pivot axis and the upper rear arm is pivotally attached to the rear base at a second pivot axis, and wherein the extendable hydraulic cylinder is pivotally attached at the opposite end thereof to the first pivot axis or to the second pivot axis.

10. An implement frame apparatus comprising: a center frame section mounted on center wheels for movement along the ground in an operating travel direction; an inner wing section pivotally attached to an end of the center frame section about an inner pivot axis oriented substantially parallel to the operating travel direction; wherein the inner wing section is movable from a field position, extending laterally outward from the center frame section, to a transport position extending upward from the center section and above the center section such that the center frame section extends laterally beyond wing furrow openers on the inner wing section when the inner wing section is in the transport position such that a width of the implement frame apparatus when in the transport position is substantially equal to a width of the center section; and a transport actuator mounted to the center frame section and operative to pivot the inner wing section upward about the inner pivot axis.

11. The apparatus of claim 10 wherein the inner wing section extends substantially vertically when in the transport position.

12. The apparatus of claim 10 wherein the inner pivot axis is located between the end of the center frame section and the middle of the center frame section.

13. The apparatus of claim 10 comprising: an outer wing section pivotally attached to an outer end of the inner wing section about an outer pivot axis oriented substantially parallel to the operating travel direction; wherein the inner and outer wing sections are movable from a field position, extending laterally outward from the center frame section, to a transport position extending upward from the center section; a transport wheel mounted about a transport caster axis to an outer end of the outer wing; a wheel actuator operative to pivot the transport wheel about the transport caster axis from a first position, where a rotational axis of the transport wheel is oriented substantially perpendicular to the operating travel direction and the transport wheel supports a rear end of the outer wing section in the field position, to a second position where the rotational axis of the transport wheel is oriented substantially parallel to the operating travel direction and supports a rear end of the outer wing section when moving from the field position to the transport position; wherein when moving from the field position to the transport position the inner wing section pivots upward about the inner pivot axis and the outer wing section pivots downward about the outer pivot axis supported by the transport wheel; and when in the transport position the inner wing section extends upward from the center frame section and the outer wing section extends upward with a bottom of the outer wing section next to a bottom of the inner wing section and the transport wheel is above the ground.

14. The system of claim 13 wherein the inner wing section and outer wing section are oriented substantially vertically when in the transport position.

15. The apparatus of claim 13 wherein: the inner wing section comprises front and rear parallel inner wing beams, and front and rear first brackets extending upward from inner ends of each of the front and rear inner wing beams, and front and rear second brackets extending downward from outer ends of each of the front and rear inner wing beams; the outer wing section comprises front and rear parallel outer wing beams, and front and rear third brackets extending downward from inner ends of each of the front and rear outer wing beams; wherein the inner pivot axis is defined by holes through the front and rear first brackets; and wherein the outer pivot axis is defined by holes through the front second bracket, the rear second bracket, the front third bracket, and the rear third bracket.

16. The apparatus of claim 13 comprising a plurality of center furrow openers movably mounted to the center frame section and a plurality of wing furrow openers movably mounted to the inner and outer wing sections and substantially aligned with the center furrow openers, and wherein when in the transport position, the wing furrow openers mounted on the inner wing sections are above the center furrow openers mounted on the center frame section.

17. The apparatus of of claim 13 wherein the center frame section comprises: a spine beam oriented parallel to the operating travel direction; a front pivot bracket extending downward and laterally right and left from a front portion of the spine beam and a rear pivot bracket extending downward and laterally right and left from a rear portion of the spine beam; and wherein the inner pivot axis extends through holes in lower portions of the front and rear pivot brackets; and center furrow openers are located on both sides of the inner pivot axis.

18. The apparatus of claim 17 wherein a rear end of the spine beam is fixed to a rear center beam extending laterally from the spine beam and the rear center beam is supported on rear wheels rotatable on a rotational axes oriented perpendicular to the operating travel direction.

19. The apparatus of claim 17 wherein a front end of the spine beam is pivotally attached to a front wheel and hitch assembly about a substantially vertical hitch pivot axis.

20. The apparatus of claim 17 comprising: a right inner wing section pivotally attached to a right end of the center frame section about a right inner pivot axis oriented substantially parallel to the operating travel direction; a left inner wing section pivotally attached to a left end of the center frame section about a left inner pivot axis oriented substantially parallel to the operating travel direction; a right outer wing section pivotally attached to an outer end of the right inner wing section about a right outer pivot axis oriented substantially parallel to the operating travel direction; a left outer wing section pivotally attached to an outer end of the left inner wing section about a left outer pivot axis oriented substantially parallel to the operating travel direction wherein the right and left inner and outer wing sections are movable from a field position, extending laterally outward from the center frame section, to a transport position; wherein when moving from the field position to the transport position the right and left inner wing sections pivot upward about the corresponding right and left inner pivot axes and the right and left outer wing sections pivot downward about the corresponding right and left outer pivot axis; and when in the transport position the right and left inner wing sections extend upward from the center frame section separated by a distance substantially equal to a width of the spine beam.

21. The apparatus of of claim 13 wherein the inner and outer wing sections are supported on front caster wheels, each pivotally mounted about substantially vertical wing caster axes, and on a rear wheel rotatable about a rotational axis perpendicular to the operating travel direction.

Description

DESCRIPTION OF THE DRAWINGS

[0017] While the invention is claimed in the concluding portions hereof, preferred embodiments are provided in the accompanying detailed description which may be best understood in conjunction with the accompanying diagrams where like parts in each of the several diagrams are labeled with like numbers, and where:

[0018] FIG. 1 is a schematic perspective view of an embodiment of the seeding apparatus of the present disclosure;

[0019] FIG. 2 is a side view of the raising linkage assembly of the embodiment of FIG. 1 with furrow openers in the operating position;

[0020] FIG. 3 is a side view of the raising linkage assembly of the embodiment of FIG. 1 with furrow openers in the idle position;

[0021] FIG. 4 is a perspective view of the raising linkage assembly of the embodiment of FIG. 1 with furrow openers in the operating position;

[0022] FIG. 5 is a perspective vie of the embodiment of FIG. 1 with the transport wheel turned to prepare for transition to the transport position;

[0023] FIG. 6 is a perspective view of the embodiment of FIG. 1 in a partially folded position in the transition between the field position and the transport position;

[0024] FIG. 7 is a perspective view of the embodiment of FIG. 1 in the full transport position;

[0025] FIG. 8 is a side view of the embodiment of FIG. 1 in the full transport position;

[0026] FIG. 9 is a front view of the embodiment of FIG. in the field position;

[0027] FIG. 10 is a front view of the embodiment of FIG. 1 in a partially folded position in the transition between the field position and the transport position;

[0028] FIG. 11 is a front view of the embodiment of FIG. 1 in the full transport position.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

[0029] FIGS. 1-4 illustrate an embodiment of a seeding apparatus 1 of the present disclosure comprising an implement frame 3 mounted on wheels 5 for travel along the ground 7 in an operating travel direction T. Front and rear frame members 9F, 9R extend laterally substantially perpendicular to the operating travel direction T and are pivotally mounted to the implement frame 3 by corresponding right and left linkage assemblies 11R, 11L connected to the implement frame 3. Corresponding right and left actuators, illustrated as extendable hydraulic cylinders 13R, 13L operate the linkage assemblies 11F, 11R to move the right and left frame members 9F, 9R at the same time such that the frame members 9 are at all times the same vertical distance above the ground 7.

[0030] A plurality of front furrow openers 15F are mounted on the front frame member 9F and a plurality of rear furrow openers 15R are mounted on the rear frame member 9R. The front and rear frame members 9F, 9R are movable from an operating position shown in FIG. 2 where the front and rear furrow openers 15F, 15R are engaged in the ground 7 and separated by an operating distance OD, to an idle position shown in FIG. 3 where the front and rear furrow openers 15F, 15R are above the ground 7 and are separated by an idle distance ID that is greater than the operating distance OD. The linkage assemblies 11 are configured to move the front frame member 9F forward and move the rear frame member 9R rearward as the frame members 9 move upward from the operating position OP to the idle position IP to increase the distance between the front and rear rows of furrow openers 15 and thus facilitate access for maintenance. As can be seen the furrow openers 15 are well above the ground as well to further facilitate access.

[0031] The right and left linkage assemblies 11 each comprise a front parallel arm assembly 17 connected between a bracket 21 fixed to the implement frame 3 and the front frame member 9F. A front upper arm 17U and a front lower arm 17L of the front parallel arm assembly 17 slope forward and down when the front frame member 9F is in the operating position of FIG. 2, and the front upper arm 17U and front lower arm 17L slope forward and up when the front frame member 9 is in the idle position of FIG. 3.

[0032] Similarly the right and left linkage assemblies 11 each comprise a rear parallel arm assembly 19 connected between the bracket 21 and the rear frame member 9R. A rear upper arm 19U and a rear lower arm 19L of the rear parallel arm assembly 19 slope rearward and down when the rear frame member 9R is in the operating position of FIG. 2, and the rear upper arm 19U and rear lower arm 19L slope rearward and up when the rear frame member 9R is in the idle position of FIG. 3.

[0033] A rear end 17LR of the front lower arm 17L is pivotally attached to a lower pivot axis LPA defined by the bracket 21, and a front end 19LF of the rear lower arm 19L is pivotally attached to the same lower pivot axis LPA.

[0034] A rear portion 17UR of the front upper arm 17U is pivotally attached to a front upper pivot axis FUPA defined by the bracket 21, and a front portion 19UF of the rear upper arm 19U is pivotally attached to a rear upper pivot axis RUPA defined by the bracket 21.

[0035] The upper and lower front arms 17U, 17L are parallel and pivotally attached to a front base 23F fixed to the front frame member 9F, and similarly the upper and lower rear arms 19U, 19L are parallel and pivotally attached to a rear base 23R fixed to the rear frame member 9R.

[0036] The front upper pivot axis FUPA and the rear upper pivot axis RUPA are at the same distance H above the ground 7 and a forward pivot line FPL between the lower pivot axis LPA and the front upper pivot axis FUPA slopes forward at a forward angle FN with respect to vertical V, and a rearward pivot line RPL between the lower pivot axis LPA and the rear upper pivot axis RUPA slopes rearward at a rearward angle RN with respect to vertical V that is equal to the forward angle FN.

[0037] The front upper arm 17U is pivotally linked to the rear upper arm 19U by a pivot bar 25 such that vertical movement of one of the front and rear parallel arm assemblies 17, 19 causes the same vertical movement in the other of the front and rear arm assemblies 17, 19. As shown, the front upper arm 17U defines a front bar pivot axis FBPA rearward and downward from the front upper pivot axis FUPA and the rear upper arm 19U defines a rear bar pivot axis RBPA forward and upward from the rear upper pivot axis RUPA and the pivot bar 25 is pivotally attached to the front and rear bar pivot axes FBPA, RBPA.

[0038] The actuator provided by hydraulic cylinder 13 is pivotally attached at one end 13A to the lower pivot axis LPA and pivotally attached at the opposite end 13B to the front base 23F or to the rear base 23R and extension or retraction of the hydraulic cylinder 13 moves the linkage assemblies 11 as described. The upper front arm 17U is pivotally attached to the front base 23F at a first pivot axis PA1 and the upper rear arm 19U is pivotally attached to the rear base 23R at a second pivot axis PA2. The extendable hydraulic cylinder 13 is shown pivotally attached at the opposite end 13B thereof to the second pivot axis PA2, but could also be pivotally attached to the first pivot axis PA1.

[0039] The present disclosure provides a raising and lowering arrangement for furrow openers 15 on two rows 15F, 15R which reduces the operating distance OD between the front and rear furrow openers when they are in the operating position to reduce variances in the row spacing, and then increases the idle distance ID between the two rows of furrow openers 15F, 15R to facilitate maintenance.

[0040] The implement frame 3 comprises a center frame section 27 mounted on center wheels 5C for movement along the ground 7 in the operating travel direction T. An inner wing section 29 is pivotally attached to an end of the center frame section 27 about an inner pivot axis IPX oriented substantially parallel to the operating travel direction T. It is contemplated that where a narrower implement is desired the implement frame 3 will comprise only the center frame section 27 and an inner wing section 29 pivotally mounted on each side of the center frame section 27,

[0041] However the present disclosure also provides an outer wing section 31 that is pivotally attached to an outer end of the inner wing section 29 about an outer pivot axis OPX also oriented substantially parallel to the operating travel direction T. In the field position of FIG. 1 the wings 29, 31 flex up and down about the inner and outer pivot axes IPX, OPX to follow field contours.

[0042] As illustrated in FIGS. 5-10, the inner and outer wing sections 29, 31 are movable from the field position FPS shown in FIG. 1, extending laterally outward from the center frame section 27, to a transport position TPS shown in FIGS. 7 and 110 extending upward from the center section frame 27.

[0043] A transport wheel 33 is mounted about a transport caster axis TCA to an outer end of the outer wing 31, and a wheel actuator 35 is operative to pivot the transport wheel 33 about the transport caster axis TCA from a first position shown in FIG. 1 where a rotational axis TRA of the transport wheel 33 is oriented substantially perpendicular to the operating travel direction T and the transport wheel 33 supports a rear end of the outer wing section 31 in the field position, to a second position shown in FIG. 5 where the rotational axis TRA of the transport wheel 33 is oriented substantially parallel to the operating travel direction T and supports a rear end of the outer wing section 31 when moving from the field position FPS to the transport position TPS.

[0044] When moving from the field position FPS to the transport position TPS, a transport actuator provided by hydraulic cylinder 47 pivots the inner wing section 29 upward about the inner pivot axis IPX and the outer wing section 31 pivots downward about the outer pivot axis OPX supported by the transport wheel 33 rolling along the ground toward the center section frame 27 until the inner wing section 29 lifts the transport wheel 33 off the ground as the inner wing section 31 approaches vertical.

[0045] Thus when in the transport position the inner wing section 29 extends upward from the center frame section 27 and the outer wing section 31 extends upward with a bottom 31B of the outer wing section 31 next to a bottom 29B of the inner wing section 29 and the transport wheel 33 is above the ground 7. The inner wing section 29 and outer wing section 31 are oriented substantially vertically above the center section 27 when in the transport position TPS as best seen in FIG. 11. It can also be seen in FIG. 11 that where only inner wing sections are present on each side of the center section, with no outer wings 31 present, the width of the total implement frame 3 when in the transport position is substantially equal to a width of the center frame section 27.

[0046] The inner wing section 29 comprises front and rear parallel inner wing beams 37F, 37R, and front and rear first brackets 39R, 39F extending downward from inner ends of each of the front and rear inner wing beams 37F, 37R, and front and rear second brackets 41F, 41R extending downward from outer ends of each of the front and rear inner wing beams 37R, 37F. Similarly the outer wing section 31 comprises front and rear parallel outer wing beams 43F, 43R and front and rear third brackets 45F, 45R extending downward from inner ends of each of the front and rear outer wing beams 43F, 43R.

[0047] The inner pivot axis IPX is defined by holes through the front and rear first brackets 39R, 39F, and the outer pivot axis OPX is defined by holes through the front second bracket 41F, the rear second bracket 41R, the front third bracket 45F, and the rear third bracket 45R.

[0048] A plurality of center furrow openers 15CF are movably mounted as described above to the center frame section 27 and a plurality of wing furrow openers 15WF are movably mounted to the inner and outer wing sections 29, 31 and laterally aligned with the center furrow openers 15CF. When in the transport position TPS, the wing furrow openers 15WF mounted on the inner wing sections 31 are above the center furrow openers 15CF mounted on the center frame section 27 reducing the width of the apparatus 1 when in transport.

[0049] In the illustrated apparatus 1 the center frame section 27 comprises a spine beam 51 oriented parallel to the operating travel direction T. A front pivot bracket 53F extends downward and laterally right and left from a front portion of the spine beam 51 and a rear pivot bracket 53R extends downward and laterally right and left from a rear portion of the spine beam 51. The inner pivot axis IPX extends through holes in lower portions of the front and rear pivot brackets 53F, 53R and the center furrow openers 15CF are located on both sides of the inner pivot axis IPX. This location of the inner pivot axis IPX allows the inner wing section 29 to pivot upward above the center furrow openers 15CF mounted on the center frame section 27.

[0050] A rear end of the spine beam 51 is fixed to a rear center beam 55 extending laterally from the spine beam 51 and the rear center beam is supported on center rear wheels 5CR that are rotatable on a rotational axes CRRA oriented perpendicular to the operating travel direction T. The front end of the spine beam 51 is pivotally attached to a front wheel and hitch assembly 57 about a substantially vertical hitch pivot axis HPA.

[0051] The center frame section 27 supports all the weight of the apparatus when in the TPS and so the rear center beam is supported by four large center rear wheels 5CR and the front end of the spine beam 51 is supported on four front wheels 5CF that pivot about the hitch pivot axis HPA to steer the implement. The inner and outer wing sections 29, 31 are supported on front caster wheels 59, each pivotally mounted about substantially vertical wing caster axes WCA, and on a rear wheel 61 rotatable about a rotational axis perpendicular to the operating travel direction T.

[0052] As illustrated in FIG. 9 the implement frame 3 comprises a right inner wing section 29R pivotally attached to the right end 27R of the center frame section 27 about a right inner pivot axis RIPX oriented substantially parallel to the operating travel direction and a left inner wing section 29L pivotally attached to a left end 27L of the center frame section 27 about a left inner pivot axis LIPX oriented substantially parallel to the operating travel direction. A right outer wing section 31R is pivotally attached to an outer end of the right inner wing section 29R about a right outer pivot axis ROPX oriented substantially parallel to the operating travel direction, and a left outer wing section 31L is pivotally attached to an outer end of the left inner wing section 29L about a left outer pivot axis LOPX oriented substantially parallel to the operating travel direction.

[0053] The right and left inner and outer wing sections 29R, 29L, 31R 31L are movable from a field position FPS as shown in FIG. 9, extending laterally outward from the center frame section 27, to a transport position TPS shown in FIG. 11. As seen in FIG. 10 when moving from the field position to the transport position the right and left inner wing sections 29R, 29L pivot upward about the corresponding right and left inner pivot axes RIPX, LIPX and the right and left outer wing sections 31R, 31L pivot downward about the corresponding right and left outer pivot axis ROPX, LOPX. When in the final transport position as seen in FIG. 11, the right and left inner wing sections 29R, 29L extend upward from the center frame section 27 separated by a distance substantially equal to a width of the spine beam 55.

[0054] The present disclosure provides an arrangement for pivoting inner and outer wing sections 29, 31 of an implement frame 3 from a field position FPS to a transport position TPS where the wing sections extend upward above the center section 27, thus providing a wide implement that still has a narrow width when in the transport position.

[0055] The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous changes and modifications will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all such suitable changes or modifications in structure or operation which may be resorted to are intended to fall within the scope of the claimed invention.