Tine mounting pads

Abstract

Mounting pads for attaching tines to a pick-up device of a crop implement such as a round baler may include a tab that extends from a body portion. The tab may be hinged to the main body to allow the tab to loop around the connecting loop of the tine.

Claims

1. A pick-up device of a crop implement, the pick-up device comprising: a tine support; a tine mounted to the tine support, the tine comprising: a coil having an outer coil surface and an inner coil surface; an arm that extends from the coil; and a connecting loop extending from the coil; and a mounting pad comprising: a body portion having an inner pad surface and an opposing outer pad surface, the inner pad surface being in contact with the outer coil surface and the outer pad surface being in contact with the tine support; and a tab connected to and extending from the body portion for mounting between a fastener and the connecting loop, the body portion and tab being a single piece.

2. The pick-up device as set forth in claim 1 wherein the tab is looped around the connecting loop, the body portion having a body aperture and the tab having a tab aperture, the body aperture and the tab aperture being aligned to allow a common fastener to attach the mounting pad to the pick-up device.

3. The pick-up device as set forth in claim 2 further comprising a fastener, the fastener being received in the body aperture and the tab aperture.

4. The pick-up device as set forth in claim 1 wherein the arm is a first arm and the coil is a first coil, the tine further comprising a second coil having an outer coil surface and an inner coil surface, the inner pad surface being in contact with the outer coil surface of the second coil, the connecting loop joining the first coil and the second coil.

5. The pick-up device as set forth in claim 4 wherein the mounting pad comprises: a first arcuate leg that contacts the first coil and the tine support; and a second arcuate leg that contacts the second coil and the tine support.

6. The pick-up device as set forth in claim 5 wherein the first coil and the second coil are separated by a distance D1, the tab having a width that is about D1 or less.

7. The pick-up device tiac assembly as set forth in claim 1 wherein the tab is hinged to the body portion to allow the tab to bend relative to the body portion when mounting the tine to the tine support.

8. The pick-up device as set forth in claim 1 wherein the mounting pad comprises at least one of a polymer and a self-lubricating material.

9. The pick-up device as set forth in claim 1 wherein the tine comprises metal.

10. The pick-up device as set forth in claim 1 wherein the tine does not contact the tine support.

11. The pick-up device as set forth in claim 2 comprising the fastener, the fastener extending through the body aperture and the tab aperture, the fastener not contacting the tine.

12. An implement for baling crop material, the implement comprising the pick-up device of claim 1.

13. The pick-up device as set forth in claim 1 wherein the connecting loop has an inner loop surface and having an outer loop surface, the tab being in contact with the inner loop surface.

14. A pick-up device of a crop implement, the pick-up device comprising: a tine support; a metal tine comprising: a coil; an arm that extends from the coil; and a connecting loop extending from the coil for attaching the tine to the tine support; a mounting pad disposed between and contacting the connecting loop and the tine support, the mounting pad being made of at least one of a polymer and a self-lubricating material, the mounting pad comprising: a body portion for mounting between the coil and the tine support, the body portion having a body aperture; and a tab connected to and extending from the body portion, the body portion and tab being a single piece, the tab having a tab aperture; and a fastener that extends through the tab aperture, connecting loop and the body aperture, the fastener directly attaching the tine to the tine support and causing the mounting pad to be sandwiched between the tine and the tine support.

15. The pick-up device as set forth in claim 14 wherein the mounting pad is made of a polymer.

16. The pick-up device as set forth in claim 14 wherein the arm is a first arm and the coil is a first coil, the tine further comprising a second coil and a second arm that extends from the second coil, the connecting loop joining the first coil and the second coil, the mounting pad being adapted for mounting between the first and second coils and the tine support.

17. The pick-up device as set forth in claim 16 wherein the mounting pad comprises: a first arcuate leg for mounting between the first coil and the tine support; and a second arcuate leg for mounting between the second coil and the tine support.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of a crop implement shown as a round baler;

(2) FIG. 2 is a perspective cross-section view of the round baler;

(3) FIG. 3 is a perspective view of a pick-up device or reel of the round baler;

(4) FIG. 4 is a detailed perspective view of a tine assembly and a tine bar of the pick-up device;

(5) FIG. 5 is a perspective view of a tine assembly;

(6) FIG. 6 is a partial perspective view of a tine;

(7) FIG. 7 is a rear view of the tine;

(8) FIG. 8 is a perspective view of a mounting pad of the tine assembly;

(9) FIG. 9 is a perspective cross-section view of the tine assembly including a fastener;

(10) FIG. 10 is a side view of the mounting pad; and

(11) FIG. 11 is another embodiment of a mounting pad.

(12) Corresponding reference characters indicate corresponding parts throughout the drawings.

DETAILED DESCRIPTION

(13) Referring now to FIGS. 1 and 2, an implement 1 for forming round bales from crop material is shown. While the implement 1 is generally shown and described herein as a round baler, any implement that includes a pick-up device 20 having tines 32 such as other crop harvesters, windrow mergers and the like may be used. The baler 1 includes an expandable baling chamber 12 which operates by utilizing a series of bale forming belts 14 routed around a series of rollers 16. Alternatively, a single bale forming belt may be utilized. Additionally, the baler includes a PTO drive 18, a single or a plurality of belt tighteners and a lift gate 24.

(14) Material is picked up by the pick-up device 20 and transferred to a rotor assembly 19 that moves the crop material toward the baling chamber 12. As crop material is deposited in the baling chamber 12, the material is compressed by the plurality of bale forming belts 14. Tension is maintained in the bale forming belts 14 by the series of belt tighteners to ensure a properly compressed bale. Once a full bale (not shown) is formed, pickup is ceased, and a wrapping sequence is commenced by a wrapping device 28. The wrapping device 28 is configured to apply a layer of wrap material, to the outer circumference of the completed bale. Once the wrapping sequence is completed, the operator ejects the full bale from the baling chamber 12 by opening the lift gate 24.

(15) The pick-up device 20 (FIG. 3) includes a number of tines 32 for transferring crop material from the surface over which the baler 1 travels and into the baling chamber 12. As the tines 32 rotate about the axis of rotation R of the device 20 in the direction indicated by arrow A, the tines 32 pick-up crop material and direct it toward the baling chamber 12 (FIG. 3). The pick-up device 20 may include rows of tines 32 as shown in FIG. 3, or the tines 32 may be aligned in a staggered or cammed arrangement.

(16) The pick-up device 20 includes a number of tine supports (shown as tine bars) 34 to which the tines 32 are attached. Each tine bar 34 is attached to supporting disks 36. A shaft 38 is attached to one or more supporting disks 36 for rotation of the pick-up device 20. Other arrangements of the pick-up device may be used in other embodiments (e.g., more or less disks 36, use of a shaft 38 that extends over the whole width, cammed tine arrangement, etc.).

(17) Referring now to FIG. 4, the tine bar 34 includes a base 40 that is attached to disks 36 (FIG. 3) and a sidewall 42 perpendicular to the base 40. The mounting pad 46 is disposed between the tine 32 and the tine bar 34 to prevent the tine 32 from contacting the tine bar 34 (i.e., base 40 and sidewall 42 as shown in FIG. 4).

(18) The tine 32 and mounting pad 46 together form a tine assembly 44 (FIG. 5). The assembly 44 may also include a fastener 80 (FIG. 9) that extends through the mounting pad 46 and a corresponding connecting loop 66 of the tine 32. Each tine 32 includes a first arm 50 (FIG. 6) that extends from a first spring coil (or simply coil) 60 and a second arm 52 that extends from a second coil 62. The first and second coils 60, 62 have a common central axis B. The tine 32 also has a cross-wise axis C (FIG. 7) perpendicular to the central axis B and perpendicular to the tine arms 50, 52. The coils 60, 62 are joined by a connecting loop 66 that extends parallel to the central axis B (i.e., connects the loops laterally along the axis B). Generally, the connecting loop 66 begins when the winded cord of the coils 60, 62 moves beyond about a 45 angle with the cross-wise axis C (e.g., about points P.sub.60, P.sub.62 in FIG. 7). The connecting loop 66 has a width D1 (FIG. in 7) measured from the edges of the connecting loop nearest the coils 60, 62. As shown in FIG. 7, this distance D.sub.1 corresponds to the distance between the first coil 60 and the second coil 62. The connecting loop 66 has a free end 68 opposite where the loop 66 begins (points P.sub.60, P.sub.62).

(19) While the tines 32 are described and shown having two coils and two arms, tines having a single coil and a single tine may also be used without departing from the scope of the present disclosure. Such single coil tines include a mounting surface (e.g., connecting loop) to attach the tine to its support in the implement.

(20) During use, the arms 50, 52 contact the crop material and lift the crop material upward into the implement 1. The arms 50, 52 contact crop material and also commonly engage the surface over which the implement travels. Contact with the material and the surface causes the arms 50, 52 to deflect. Deflection is resisted by coils 60, 62, which act to return the arms 50, 52 to their relaxed position.

(21) Generally, the tines 32, tine bar 34 (FIG. 4) and fastener 80 (FIG. 9) are made of a metal (e.g., a single metal or a metal alloy like steel). The mounting pad 46 may be composed of a material different than the tines 32. The mounting pad 46 prevents the tines from directly contacting the tine bar 34. The mounting pad 46 may be composed of a material with a higher lubricity/lower coefficient of friction and/or a higher wear factor (which may be a product of higher hardness, greater toughness, etc., or a combination of such factors) relative to the tines 32 and/or tine bar 34. The mounting pad 46 may be composed of a polymer (e.g., ABS, nylon, nylon with embedded molybdenum disulfide, polyurethane) or a self-lubricated material (self-lubricated polytetrafluoroethylene (PTFE) or self-lubricated ceramics).

(22) The mounting pad 46 includes a body portion or main body 70 (FIG. 8). The body portion 70 includes a first actuate leg 72 for mounting between the first coil 60 (FIG. 4) and the tine bar 34 and a second actuate leg 74 (FIG. 8) for mounting between the second coil 62 (FIG. 4) and the tine bar 34. The body portion 70 also includes a body aperture 75 for receiving a fastener 80 (FIG. 9) to attach the body portion 70 to the tine bar 34 (FIG. 4). The aperture 75 is not necessarily circular and, for example, may extend upward to the top 77 of the mounting pad 46 (e.g., the aperture may be in the form of a u-shaped slit in the mounting pad 46).

(23) The mounting pad 46 also includes a tab 76 that extends from the body portion 70 for mounting between a fastener 80 (FIG. 9) and the connecting loop 66. The tab 76 includes a tab aperture 82 (FIG. 8) for receiving the fastener 80 (FIG. 9). The tab 76 has a width W1 that is about equal to or less than the distance D1 (FIG. 7) separating the coils 60, 62 to allow the tab 76 to be looped around the connecting loop 66. The tab 76 and main body 70 have inner surfaces 78 for contacting the tine 32. The main body 78 has an outer surface (not shown) for contacting the tine bar 34. The tab 76 has an outer surface 79 for contacting a fastener 80 (FIG. 9).

(24) The tab 76 may be hinged to the main body 70 to facilitate looping of the tab 76 around the free end 68 (FIG. 7) of the connecting loop 66. As shown in FIG. 10, the mounting pad 46 includes a first hinge 84 and a second hinge 86 which give the tab 76 its u-shape. In some embodiments, the hinges 84, 86 are living hinges in which the tab 76 is partially cut so that the pieces are able to bend along the hinge.

(25) In the illustrated embodiment, the body aperture 75 and tab aperture 82 are aligned (or are capable of being aligned by hinges 84, 86) such that a common fastener 80 is used to attach the mounting pad 46 to the tine bar 34 (FIG. 4). In other embodiments, the apertures 75, 82 are not aligned and two or more fasteners are used to secure the mounting pad 46 and/or tine 32 to the tine bar 34. The fastener 80 may be a flanged bolt (i.e., is one piece) or may include a bolt and various separate washers to distribute the closing force of the bolt. Tab 76 is disposed between the flange or washers and the tine bar 34 (FIG. 4).

(26) While the mounting pad 46 is shown as including a body portion 70 and a tab 76, in other embodiments a mounting pad assembly (not shown) is provided in which the body portion 70 and tab 76 are separate pieces.

(27) The mounting pad 46 may have a thickness sufficient to prevent the pad from being worn through and that provides sufficient structure to manipulate the pad to fasten it to the tine bar. For example, the mounting pad 46 may have a thickness of at least about 1/32 inch, at least about 1/16 inch or at least about inch.

(28) Generally, the tine 32 does not contact the tine bar 34 (FIG. 4) as the mounting pad 46 is disposed on all contact surfaces of the tine 32. In addition, the tine 32 does not contact the fastener 80 (FIG. 9) as the tab 76 of the mounting pad 46 is between the tine 32 and fastener 80.

(29) In this regard, it should be noted that the mounting pad 46 (e.g., the body portion 70) may have a variety of shapes and geometries.

(30) Another embodiment of the mounting pad generally referenced as 346 is shown in FIG. 11. The mounting pad 346 includes a main body portion 370 having a body aperture 375. A tab 376 extends from the main body 370 and includes a tab aperture 382. Rather than having separate legs 72, 74 as with the mounting pad 46 of FIG. 8, the body portion 370 of the mounting pad 346 of FIG. 11 is a single piece that is disposed between both tine coils 60, 62 (FIG. 7) and the tine bar 34 (FIG. 4). In other embodiments, the body portion 370 is arcuate to better match the shape of the tine coils 60, 62.

(31) Compared to conventional tine mounting assemblies, the tine assembly 44 (FIG. 5) of the present disclosure has several advantages. By using mounting pads 46 between the tine bar 34 and the tines 32, the tines 32 do not contact the tine bar 34, which prevents and/or greatly reduces wear of the tines and formation of stress risers which cause the tine to fracture. By using a mounting pad 46 with arcuate legs 72, 74, the mounting pad 46 may prevent the coils 60, 62 from contacting both the base 40 and sidewall 42 of the tine bar 34. The mounting pad tab 76 allows the tine 32 to be secured by a fastener 80 (FIG. 9) without the fastener contacting the tine 32 which may wear the tine and produce stress risers at the contact point. The mounting pad 46 may also act as a damping agent to decrease the spring energy and shock loads the tine coils 60, 62 experience during pull-back and extension. The mounting pad 46 may also greatly reduce the amount of fretting corrosion caused by the coils rubbing directly on the tine support 34.

(32) As used herein, the terms about, substantially, essentially and approximately when used in conjunction with ranges of dimensions, concentrations, temperatures or other physical or chemical properties or characteristics is meant to cover variations that may exist in the upper and/or lower limits of the ranges of the properties or characteristics, including, for example, variations resulting from rounding, measurement methodology or other statistical variation.

(33) When introducing elements of the present disclosure or the embodiment(s) thereof, the articles a, an, the and said are intended to mean that there are one or more of the elements. The terms comprising, including, containing and having are intended to be inclusive and mean that there may be additional elements other than the listed elements. The use of terms indicating a particular orientation (e.g., top, bottom, side, etc.) is for convenience of description and does not require any particular orientation of the item described.

(34) As various changes could be made in the above constructions and methods without departing from the scope of the disclosure, it is intended that all matter contained in the above description and shown in the accompanying drawing[s] shall be interpreted as illustrative and not in a limiting sense.