Ridge cleaner

Abstract

The present invention relates to a ridge cleaner assembly, which includes an upper subframe, which is mounted to an agricultural planter in front of the planter ridge unit and is longitudinally aligned with a furrowing assembly. The lower subframe rotatably supports a first ridge cleaner wheel and a second ridge cleaner wheel. The intermediate subframe is pivotally connected to the upper subframe at the front end and pivotally connected to the lower subframe at the rear end. The first connecting rod and the second connecting rod are pivotally connected to the upper subframe at the front end and pivotally connected to the lower subframe at the rear end. The actuator system is capable of applying a downward force and an optional upward force to the lower subframe. The ridge cleaner assembly may include a guide wheel supported by a rear support subframe. The ridge cleaner assembly may include a depth selector to change the penetration depth of the ridge cleaner wheel into the soil surface.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application No. 63 / 005,559, filed on April 6, 2020; U.S. Provisional Application No. 63 / 010833, filed on April 16, 2020; U.S. Provisional Application No. 63 / 017,869, filed on April 30, 2020; U.S. Provisional Application No. 63 / 040,311, filed on June 17, 2020; U.S. Provisional Application No. 63 / 074,684, filed on September 4, 2020; U.S. Provisional Application No. 63 / 115,875, filed on November 19, 2020; and U.S. Provisional Application No. 63 / 122,735, filed on December 8, 2020, all of which are incorporated herein by reference in their entirety. Background Art

[0003] The row cleaner is positioned forward of the furrow opening assembly on the planter to move any crop residue, soil or other debris laterally outwardly to prepare the row cleaner seedbed area for the rearwardly directed furrow opening assembly which opens a seed furrow in which the seed is deposited. While many commercially available row cleaners meet their intended purpose, there remains a need for a row cleaner assembly that provides improved performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 is a top plan view of an embodiment of an agricultural planter.

[0005] Figure 2 is a side view of an embodiment of a planter row unit showing an embodiment of a row cleaner assembly including a guide wheel.

[0006] Figure 2A is another side view of an embodiment of a planter ridge unit, showing Figure 2 Another embodiment of a substantially identical row cleaner assembly is shown but without the guide wheels.

[0007] Figure 3 yes Figure 2 A rear perspective view of a row cleaner assembly of FIG.

[0008] Figure 3A yes Figure 2A A rear perspective view of a row cleaner assembly of FIG.

[0009] Figure 4 yes Figure 3 Right side view of the row cleaner assembly.

[0010] Figure 5 yes Figure 3Left side view of the row cleaner assembly.

[0011] Figure 6 yes Figure 3 Front view of the row cleaner assembly.

[0012] Figure 7 yes Figure 3 Rear view of the row cleaner assembly.

[0013] Figure 8 yes Figure 3 A top plan view of a row cleaner assembly.

[0014] Fig. 9 yes Figure 3 A top plan view of a row cleaner assembly.

[0015] Fig.10 yes Figure 3 A rear perspective view of a frame assembly of a row cleaner assembly with the row cleaner wheels and guide wheels removed to better illustrate an embodiment of the frame assembly.

[0016] Fig.11 yes Fig.10 A front perspective view of a frame assembly of FIG. 1 and an exploded view of an embodiment of one of the row cleaner wheels is shown.

[0017] Fig.12 yes Fig.10 An exploded rear perspective view of the frame assembly.

[0018] Fig.13 yes Fig.10 An exploded front perspective view of an embodiment of an upper subframe of a frame assembly.

[0019] Fig.14 yes Fig.10 An exploded rear perspective view of an embodiment of an intermediate sub-frame of a frame assembly.

[0020] Figure 15 is Fig.10 An exploded rear perspective view of an embodiment of a lower subframe of a frame assembly.

[0021] Figure 16 is used for Fig.10 A side view of an alternative embodiment of a lower subframe of a frame assembly.

[0022] Fig.17 yes Fig.10 A rear perspective view of the rear pillar subframe of the frame assembly.

[0023] Fig.18 is a side view of an embodiment of a planter row illustrating another embodiment of a row cleaner assembly including guide wheels.

[0024] Fig.18Ais another side view of an embodiment of a planter ridge unit, showing Fig.18 A further embodiment of a substantially identical row cleaner assembly is shown but without the guide wheels.

[0025] Fig.19 yes Fig.18 A rear perspective view of a row cleaner assembly of FIG.

[0026] Fig.19A yes Fig.18A A rear perspective view of a row cleaner assembly of FIG.

[0027] Fig. 20 yes Fig.19 Right side view of the row cleaner assembly.

[0028] Fig.21 yes Fig.19 Left side view of the row cleaner assembly.

[0029] Fig. 22 yes Fig.19 Front view of the row cleaner assembly.

[0030] Fig.23 yes Fig.19 Rear view of the row cleaner assembly.

[0031] Fig.24 yes Fig.19 A top plan view of a row cleaner assembly.

[0032] Fig.25 yes Fig.19 A top plan view of a row cleaner assembly.

[0033] Fig.26 yes Fig.19 A rear perspective view of a row cleaner assembly with the row cleaner wheels and guide wheels removed to better illustrate an embodiment of the frame assembly.

[0034] Fig. 27 yes Fig.26 A front perspective view of a frame assembly of FIG. 1 and an exploded view of an embodiment of one of the row cleaner wheels is shown.

[0035] Fig.28 yes Fig.26 An exploded rear perspective view of the frame assembly.

[0036] Fig.29 yes Fig.26 An exploded front perspective view of an embodiment of an upper subframe of a frame assembly.

[0037] Fig.30 yes Fig.26 An exploded rear perspective view of an embodiment of an intermediate sub-frame of a frame assembly.

[0038] Fig.31 yes Fig.26 An exploded rear perspective view of an embodiment of a lower subframe of a frame assembly.

[0039] Fig.32 yes Fig.26 An exploded rear perspective view of an embodiment of a rear pillar subframe of a frame assembly.

[0040] Fig.33 is a perspective view of components of an embodiment of an actuator system showing an embodiment of an air bag actuator and a partially exploded spring assembly.

[0041] Fig.34 is yet another side view of an embodiment of a planter ridge unit showing yet another embodiment of a ridge cleaner assembly including a guide wheel.

[0042] Fig.34A is another side view of an embodiment of a planter ridge unit, showing Fig.34 A further embodiment of a substantially identical row cleaner assembly is shown but without the guide wheels.

[0043] Fig.35 yes Fig.34 A rear perspective view of a row cleaner assembly of FIG.

[0044] Fig.35A yes Fig.34A A rear perspective view of a row cleaner assembly of FIG.

[0045] Fig.36 yes Fig.35 Right side view of the row cleaner assembly.

[0046] Fig.37 yes Fig.35 Left side view of the row cleaner assembly.

[0047] Fig.38 yes Fig.35 Front view of the row cleaner assembly.

[0048] Fig.39 yes Fig.35 Rear view of the row cleaner assembly.

[0049] Fig.40 yes Fig.35 A top plan view of a row cleaner assembly.

[0050] Fig.41 yes Fig.35 A top plan view of a row cleaner assembly.

[0051] Fig.42 yes Fig.35A rear perspective view of a row cleaner assembly with the row cleaner wheels and guide wheels removed to better illustrate an embodiment of the frame assembly.

[0052] Fig.43 yes Fig.42 A front perspective view of a frame assembly of FIG. 1 and an exploded view of an embodiment of one of the row cleaner wheels is shown.

[0053] Fig.44 yes Fig.42 An exploded rear perspective view of the frame assembly.

[0054] Fig.45 yes Fig.42 An exploded perspective view of the lower subframe and rear pillar subframe of the frame assembly showing an exploded view of an embodiment of a depth selector.

[0055] Fig.46 yes Fig.42 A perspective view of an intermediate sub-frame and linkage of a frame assembly and illustrating an embodiment of an actuator system.

[0056] Fig.47 yes Fig.42 An exploded rear perspective view of an embodiment of an upper subframe of a frame assembly.

[0057] Fig.48 yes Fig.42 An exploded rear perspective view of an embodiment of an intermediate sub-frame of a frame assembly.

[0058] Fig.49 yes Fig.42 An exploded rear perspective view of an embodiment of a link of a frame assembly.

[0059] Fig.50 yes Fig.42 An exploded rear perspective view of an embodiment of a lower subframe of a frame assembly.

[0060] Fig.51 yes Fig.42 A rear perspective view of the rear pillar subframe of the frame assembly.

[0061] 52A is a schematic illustration of the movement of the row cleaner assembly when the actuator system is actuated to apply downforce.

[0062] 52B is a schematic illustration of the movement of the row cleaner assembly when the actuator system is actuated to apply a lifting force.

[0063] Fig.53 is yet another side view of an embodiment of a planter ridge unit showing yet another embodiment of a ridge cleaner assembly including a guide wheel.

[0064] Fig.53Ais another side view of an embodiment of a planter ridge unit, showing Fig.34 A further embodiment of a substantially identical row cleaner assembly is shown but without the guide wheels.

[0065] Fig.54 yes Fig.53 A rear perspective view of a row cleaner assembly of FIG.

[0066] Fig.54A yes Fig.53A A rear perspective view of a row cleaner assembly of FIG.

[0067] Fig.55 yes Fig.54 Right side view of the row cleaner assembly.

[0068] Fig.56 yes Fig.54 Left side view of the row cleaner assembly.

[0069] Fig.57 yes Fig.54 Front view of the row cleaner assembly.

[0070] Fig.58 yes Fig.54 Rear view of the row cleaner assembly.

[0071] Fig.59 yes Fig.54 A top plan view of a row cleaner assembly.

[0072] Fig.60 yes Fig.54 A top plan view of a row cleaner assembly.

[0073] Fig.61 yes Fig.54 A rear perspective view of a row cleaner assembly with the row cleaner wheels and guide wheels removed to better illustrate an embodiment of the frame assembly.

[0074] Fig.62 yes Fig.54 A front perspective view of a frame assembly of FIG. 1 and an exploded view of an embodiment of one of the row cleaner wheels is shown.

[0075] Fig.63 yes Fig.54 An exploded rear perspective view of the frame assembly.

[0076] Fig.64 yes Fig.54 An exploded perspective view of the lower subframe and rear pillar subframe of the frame assembly showing an exploded view of an embodiment of a depth selector.

[0077] Fig.65 yes Fig.54A perspective view of an intermediate sub-frame and linkage of a frame assembly and illustrating an embodiment of an actuator system.

[0078] Fig.66 yes Fig.54 An exploded rear perspective view of an embodiment of an upper subframe of a frame assembly.

[0079] Fig.67 yes Fig.54 A perspective view of an embodiment of a link of a frame assembly.

[0080] Fig.68 yes Fig.54 A perspective view of an embodiment of an intermediate sub-frame of a frame assembly.

[0081] Fig.69 yes Fig.54 A front perspective view of an embodiment of a lower subframe of a frame assembly.

[0082] Fig.70 yes Fig.54 A rear perspective view of the rear pillar subframe of the frame assembly.

[0083] Fig.71 is a side view of yet another embodiment of a planter row unit showing an alternative mounting arrangement for any of the above-described embodiments of the row cleaner assembly.

[0084] Fig.72 is a side view of yet another embodiment of a planter row unit, which thus illustrates another alternative embodiment of the row cleaner assembly and mounting arrangement.

[0085] Fig.73 is a rear perspective view of yet another embodiment of a row cleaner assembly including an embodiment of a third row cleaner wheel assembly.

[0086] Fig.74 yes Fig.73 Front perspective view of a row cleaner assembly.

[0087] Figure 75 is Fig.73 Right side view of the row cleaner assembly.

[0088] Figure 76 is Fig.73 Left side view of the row cleaner assembly.

[0089] Fig.77 yes Fig.73 A top plan view of a row cleaner assembly.

[0090] Fig.78 yes Fig.73 A top plan view of a row cleaner assembly.

[0091] Fig.79 yes Fig.73 An exploded right front perspective view of the row cleaner assembly of FIG.

[0092] Fig.80 yes Fig.73 An exploded left front perspective view of a row cleaner assembly.

[0093] Fig.81 is a front right perspective view of yet another embodiment of a row cleaner assembly including an embodiment of a row cleaner diverter assembly.

[0094] Fig.82 Is with Fig.81 A top plan view of a row cleaner assembly of a row cleaner diverter assembly.

[0095] Fig.83 Is with Fig.81 An overhead plan view of a row cleaner assembly of a row cleaner diverter assembly.

[0096] Fig.84 Is with Fig.81 The same right front perspective view of the row cleaner assembly of the row cleaner diverter assembly of FIG. 1 , but with the row cleaner wheels removed to better illustrate the diverter assembly.

[0097] Fig.85 yes Fig.84 The same right front perspective view of the row cleaner assembly of FIG. 1 , but showing the exploded Fig.81 The row cleaner diverter assembly.

[0098] Fig.86 yes Fig.81 A rear perspective view of a row cleaner diverter assembly.

[0099] Fig.87 It is suitable for Fig.50 and Fig.69 A front perspective view of an alternative embodiment of a row cleaner diverter assembly of an embodiment of a lower subframe shown in FIG.

[0100] Fig.88 yes Figure 3 A side view of an embodiment of a row cleaner assembly showing alternative placement of a load sensor for determining the downforce applied on the row cleaner assembly.

[0101] Fig.89 yes Fig.19 A side view of an embodiment of a row cleaner assembly showing the placement of a load sensor for determining the downforce applied on the row cleaner assembly.

[0102] Fig.90 yes Fig.35 A side view of an embodiment of a row cleaner assembly showing the placement of a load sensor for determining the downforce applied on the row cleaner assembly.

[0103] Fig.91 yes Fig.54 A side view of an embodiment of a row cleaner assembly showing the placement of a load sensor for determining the downforce applied on the row cleaner assembly.

[0104] Fig.92 yes Figures 88 to 91 A front view of one of the embodiments of the load sensors shown in FIG.

[0105] Fig.93 yes Fig.92 Side view of the load cell.

[0106] Figure 94 is Fig.92 A perspective view of the sleeve of the load cell.

[0107] Figure 95 is Fig.92 A bottom perspective view of a load sensing member of a load sensor.

[0108] 96 is a top perspective view of the load sensing member of FIG. 94 . DETAILED DESCRIPTION

[0109] All references cited herein are incorporated herein in their entirety. If there is a conflict in a definition in this document and in an incorporated reference, the definition in this document shall control.

[0110] Referring now to the drawings, in which like reference numerals designate identical or corresponding parts throughout the several views, Figure 1 A tractor 5 is shown pulling an agricultural planter 10 in a forward direction of travel designated by arrow 11. Planter 10 includes a tool bar 14 that operably supports a plurality of planter ridge units 200. A planter monitor 50 can be located in the cab of tractor 5 and can include a central processing unit ("CPU"), memory, and a graphical user interface ("GUI") (e.g., a touch screen interface). A global positioning system ("GPS") receiver 52 can be mounted to tractor 5.

[0111] Figure 22 is a side view of an embodiment of a planter ridge unit 200. The ridge unit 200 includes a ridge unit frame 210, which includes a downwardly extending handle 254 and a rearwardly extending frame member 212 supported from a forward support 214. The ridge unit frame 210 may also include an upper beam 215 also supported by the forward support 214. The upper beam 215 may support one or more hoppers 226, which contain a supply of seeds and an optional supply of fertilizer or other chemical inputs. The ridge unit frame 202 may be pivotally connected to the tool bar 14 by a parallel link 216. The actuator 218 may be configured to apply a lifting force and / or a downward force to the ridge unit 200. The solenoid valve 390 may be fluidly connected to the actuator 218 for modifying the lifting force and / or the downward force applied by the actuator 218. The opening system 234 may include two opening disks 244 that are rollably mounted to a downwardly extending handle 254 and are configured to open a v-shaped groove 38 in the soil 40. A pair of guide wheels 248 may be pivotally supported from the frame member 204 by a pair of corresponding guide wheel arms 260. As is well known, the upward travel of the guide wheels 248 relative to the opening disks 244 defines the depth of the groove 38. The depth adjustment rocker 268 limits the upward travel of the guide wheel arms 260, and thereby limits the upward travel of the guide wheels 248. The depth adjustment actuator 380 may be configured to modify the position of the depth adjustment rocker 268, and thereby modify the height of the guide wheels 248. The actuator 380 may be a linear actuator mounted to the ridge unit 200 and pivotally coupled to the upper end of the rocker 268. In some embodiments, the depth adjustment actuator 380 may include a device disclosed in International Patent Application No. PCT / US2012 / 035585 (Publication No. WO2012149415). The encoder 382 may be configured to generate a signal related to the linear extension of the actuator 380; it should be understood that when the idler arm 260 is in contact with the rocker 268, the linear extension of the actuator 380 is related to the depth of the groove 38. The downforce sensor 392 may be configured to generate a signal related to the amount of force applied by the idler 248 on the soil 40; in some embodiments, the downforce sensor 392 may include an instrumented pin about which the rocker 268 is pivotally coupled to the ridge unit 200, such as those disclosed in U.S. Patent Publication No. US2010 / 0180695.

[0112] Continue to refer to Figure 2, a seed meter 230 (e.g., a seed meter disclosed in International Patent Application No. PCT / US2012 / 030192 (Publication No. WO2012129442)) can be configured to deposit seeds 42 from a hopper 226 into a groove 38, for example, through a seed tube 232, which is configured to guide the seeds toward the groove. In some embodiments, the seed meter 230 can be powered by an electric drive 315, which is configured to drive a seed disk within the seed meter. In other embodiments, the drive 315 can include a hydraulic drive configured to drive the seed disk. A seed sensor 305 (e.g., an optical or electromagnetic seed sensor configured to generate a signal indicating the passage of a seed) can be mounted to the seed tube 232 and configured to send light or electromagnetic waves across the path of the seed 42 to detect the passage of each seed. A closing system 236, which can include one or more closing wheels, can be pivotally coupled to the ridge unit 200 and configured to close the groove 38.

[0113] Figure 2 Also shown is an embodiment of a row cleaner assembly 1000 mounted to the tool bar 14 and positioned forward of the furrow assembly 234. It should be understood that each row unit 200 of the planter 10 will have an associated row cleaner assembly 1000 that is longitudinally aligned with the corresponding furrow assembly 234 of the row unit 200. In the embodiment shown, the row cleaner assembly 1000 includes a guide wheel 1050 (e.g., Figure 3 100). The row cleaner assembly 1000 extends toward the rear of the tool bar 14 and is rigidly mounted to the underside of the tool bar 14 by a suitable mounting structure, which may include a mounting plate 1101 and one or more U-bolts 1001, as shown. Alternatively, the row cleaner assembly 1000 may be mounted to the top, rear, or front side of the tool bar 14 by any suitable mounting structure or connector, including a bolt bracket or by welding.

[0114] Figure 2A An alternative embodiment of a row cleaner assembly is shown, designated by reference numeral 1000A. The embodiment of row cleaner assembly 1000A is substantially the same as the embodiment of row cleaner assembly 1000, except that the embodiment of 1000A does not include guide wheels.

[0115] Figure 3 yes Figure 2 An enlarged rear perspective view of the row cleaner assembly 1000 is shown. Figure 3A The view and Figure 31000A, but showing an embodiment of a row cleaner assembly 1000A without the guide wheels. Since both embodiments of row cleaner assemblies 1000 and 1000A are substantially identical, only embodiment 1000 will be described except for the removal of the guide wheels in embodiment 1000A, recognizing that any reference to guide wheels 1050, guide wheel shafts 1051, and associated components will not apply to the 1000A embodiment.

[0116] Figure 4 and Figure 5 They are right side view and left side view of the row cleaner assembly 1000, respectively. Figure 6 and Figure 7 are the front view and the back view respectively, and Figure 8 and Fig. 9 1060-1, 1060-2 are rotatably supported by the frame assembly 1100. Each ridge cleaner wheel 1060-1, 1060-2 includes radially spaced tines 1062 around its circumference. The ridge cleaner wheels 1060-1, 1060-2 are oriented to diverge outwardly and rearwardly so that the tines 1062 of the ridge cleaner wheels 1060-1, 1060-2 are staggered at the front end when they rotate. In operation, as the planter 10 moves in the direction 11 of forward travel, the soil engages with the tines 1062, causing the ridge cleaner wheels 1060-1, 1060-2 to rotate. Due to their orientation, as the row cleaner wheels 1060-1, 1060-2 rotate, they direct any crop residue, clods of soil, or other debris laterally outward to provide a row cleaner bed for the rearwardly-aimed furrow opening assembly 234. The guide wheels 1050 are used to compact the soil 40 that would be disturbed by the row cleaner wheels 1060-1, 1060-2 before the furrow 38 is opened by the furrow opening assembly 234. Compacting the soil with the guide wheels 1050 can be helpful in dry soils to prevent the soil 40 from falling into the furrow 38.

[0117] An actuator system 1300 is positioned within the frame assembly 1100 to provide adjustable downforce and optional lift for the guide wheel 1050 and the row cleaner wheels 1060-1, 1060-2. In this embodiment, the actuator system 1300 includes a pneumatic cylinder 1302, but the actuator system 1300 can utilize any actuator that provides adjustable downforce and optional lift, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators, as will be discussed in more detail later.

[0118] Fig.10 is a rear perspective view of the frame assembly 1100 with the guide wheel 1050, row cleaner wheels 1060-1, 1060-2 and actuator system 1300 removed for clarity. Fig.11is a front perspective view of the frame assembly 1100 with the guide wheel 1050 and actuator system 1300 and the first row cleaner wheel 1060-1 removed, but showing an exploded view of the second row cleaner wheel 1060-2 and its mounting components. Fig.12 10 to 1100 is an exploded rear perspective view of the frame assembly 1100. Fig.12 , the frame assembly 1100 includes an upper subframe 1100A, an intermediate subframe 1100B, a lower subframe 1100C, a rear pillar subframe 1100D, and a first side link 1200-1 and a second side link 1200-2. The rear pillar subframe 1100D includes a portion of the lower subframe 1100C. The components including the subframes 1100A, 1100B, 1100C, and 1100D will be described in more detail later.

[0119] like Fig.12As best shown, the middle subframe 1100B is pivotally connected at its front end to the upper subframe 1100A by threaded connectors 1002 received in aligned apertures 1003 and 1004 in the respective middle subframes 1100B and upper subframe 1100A. The middle subframe 1100B is also pivotally connected at its rear end to the rear pillar subframe 1100D by threaded connectors 1006 received in aligned apertures 1007 and 1008 in the respective middle subframes 1100B and rear pillar subframe 1100D, which includes a portion of the lower subframe 1100C. The first and second side links 1200-1, 1200-2 are pivotally connected at their front ends to the upper subframe 1100A by threaded connectors 1010 received in aligned apertures 1011, 1012 in the respective first and second side links 1200-1, 1200-2 and the upper subframe 1100A. The first and second side links 1200-1, 1200-2 are pivotally connected at their rear ends to the rear pillar subframe 1100D by threaded connectors 1014 received in aligned apertures 1015, 1016 in the respective first and second links 1200-1, 1200-2 and the rear pillar subframe 1100D. The rear pillar subframe 1100D is rotationally fixed to the lower subframe 1100C by a threaded connector 1018, which is received in an arcuate slot 1019 in the lower frame 1100C and threadably engages with an opening 1021 in the rear pillar subframe 1100D. The rear pillar subframe 1100D is connected to the lower frame 1100C by a guide wheel shaft bolt 1051, which is received through aligned apertures 1022, 1023 in the respective lower frame 1100C and rear pillar subframe 1100D. It should be apparent that in the 1000A embodiment where the guide wheel 1050 is omitted, a short bolt can extend through the apertures 1022, 1023 and be secured by a nut (not shown) in place of the guide wheel shaft bolt 1051. It should be understood that the forward pivot connection of the upper subframe 1100A with the middle subframe 1100B and the side links 1200-1, 1200-2 together with the rearward pivot connection of the middle subframe 1100B and the side links 1200-1, 1200-2 with the rear pillar subframe 1100D provides a four-bar linkage mechanism, which allows the middle subframe 1100B and the lower subframe 1100C to move vertically relative to the upper subframe 1100A which is rigidly fixed to the toolbar 14.

[0120] Fig.13An exploded front perspective view of the upper subframe 1100A is shown. The upper subframe 1100A includes a first gusset plate 1102-1 and a second gusset plate 1102-2 extending downwardly from the mounting plate 1101 and spaced laterally by the front plate 1104. The gusset plates 1102-1, 1102-2 may include gusset tabs 1105, which are received in gusset tab slots 1106 in the mounting plate 1101. The front plate 1104 includes a cutout 1107 to accommodate the actuator 1302 therethrough (see Figure 6 to Figure 7 ). The front plate 1104 may include actuator front mounting ears 1108-1, 1108-2 extending downwardly from the front plate 1104. Each of the actuator front mounting ears 1108-1, 1108-2 may include a hole 1109 to receive a pin 1110 ( Fig.11 ), for mounting the front end of the actuator 1302 to the upper subframe 1100A (see Figure 6 ). Each of the actuator front mounting ears 1108-1, 1108-2 can include an ear tab 1111 that is received in a corresponding ear tab slot 1112 in the front plate 1104. The front plate 1104 can also include side tabs 1113 that are received in side tab slots 1114 in the gussets 1102-1, 1102-2. It should be understood that instead of using tabs and slots to connect the various parts of the upper subframe 1100A, the various parts of the upper subframe 1100A can be connected by welding or by bolted connections. Alternatively, the upper subframe 1100A can be manufactured as a single part, such as by casting. The gussets 1102-1, 1102-2 include apertures 1004 for receiving threaded connectors 1002 for pivotally securing the intermediate subframe 1100B to the gussets 1102-1, 1102-2, as described above with reference to Fig.12 In addition, the gussets 1102-1, 1102-2 include apertures 1012 for receiving threaded connectors 1010 for pivotally securing the first and second side links 1200-1, 1200-2 to the gussets 1102-1, 1102-2, as described above with reference to Fig.12 The gussets 1102-1, 1102-2 also include apertures 1115 and 1116 for receiving upper threaded connectors 1117 and lower threaded connectors 1118 ( Fig.11 and Fig.12 ), the upper threaded connector 1117 and the lower threaded connector 1118 act as upper and lower stops by being adjacent to the first side link 1200-1 and the second side link 1200-2 to limit the upward and downward vertical movement of the four-bar linkage.

[0121] Fig.14An exploded rear perspective view of the intermediate subframe 1100B is shown. The intermediate subframe 1100B includes a base member 1120 and a first side rail 1121-1 and a second side rail 1121-2. The base member 1120 includes a cutout 1122 to accommodate the actuator 1302 (see Figure 3 and Figure 6 ). The base member 1120 may include side tabs 1123 that are received in side tab slots 1124 in the side rails 1121-1, 1121-2. The rear end of the base member 1120 may include an actuator rear mounting lug 1125. The actuator rear mounting lug 1125 may include a hole 1126 to receive a pin 1127 ( Figure 3 and Fig.10 ) for mounting the rear end of the actuator 1302 to the intermediate sub-frame 1100B. The actuator rear mounting ear 1125 may include an ear tab 1128, which is received in an ear tab slot 1129 in the base member 1120. It should be understood that instead of using tabs and slots to connect the various parts of the intermediate sub-frame 1100B, the various parts of the intermediate sub-frame 1100B can be connected by welding or by bolted connectors. Alternatively, the intermediate sub-frame 1100B can be manufactured as a single part, for example by casting. The side guides 1121-1, 1122-2 include forward apertures 1011 for receiving threaded connectors 1010, which are used to pivotally secure the side guides 1121-1, 1121-2 of the intermediate sub-frame 1100B to the corner plates 1012-1, 1012-2 of the upper sub-frame 1100A, as described above with reference to. Fig.12 As described above, the side rails 1121-1, 1122-2 include rearward apertures 1015 for receiving threaded connectors 1014 for pivotally securing the side rails 1121-1, 1121-2 of the intermediate subframe 1100B to the rear pillar subframe 1100D, as described above with reference to Fig.12 as described.

[0122] FIG. 15 shows an exploded rear perspective view of the lower subframe 1100C. The lower subframe 1100C includes a first row cleaner wheel support arm 1130-1 and a second row cleaner wheel support arm 1130-2, which are connected at their front ends by a front plate 1132. The front plate 1132 may include side lugs 1133, which are received in side lug slots 1134 in the first row cleaner wheel support arm 1130-1 and the second row cleaner wheel support arm 1130-2. It should be understood that instead of using lugs and slots to connect the various parts of the lower subframe 1100C, the various parts of the lower subframe 1100C can be connected by welding or by bolted connectors. Alternatively, the lower subframe 1100C can be manufactured as a single part, such as by casting. Each of the first row cleaner wheel support arm 1130-1 and the second row cleaner wheel support arm 1130-2 includes a square opening 1135 for receiving the row cleaner wheel axle bolts 1061-1, 1061-2 ( Fig.11 ) of the corresponding one of the square handle portion 1063 ( Fig.11 ), as will be discussed in more detail later. Each row cleaner wheel support arm 1130-1, 1130-2 also includes an opening 1022 for receiving a guide wheel shaft bolt 1051, such as Figures 10 to 12 Each row cleaner wheel support arm 1130-1, 1130-2 also includes an arcuate slot 1019 for receiving a threaded connector 1018, which is threadably received by the rear support subframe 1100D for securing the row cleaner wheel support arm 1130-1, 1130-2 to the rear support subframe 1100D, as described above with reference to Fig.12 It will be appreciated that the arcuate slot 1019 and the threaded connector 1018 cooperate to form a depth selector 1400, thereby allowing the lower subframe 1100C to pivot about the guide wheel shaft bolt 1051 so that the row cleaner wheels 1060-1, 1060-2 are adjustably positionable relative to the rear support subframe 1100D and the guide wheel 1050 to change the depth setting of the row cleaner wheels 1060-1, 1060-2 relative to the guide wheel 1050. In an alternative embodiment as shown in FIG. 16, a series of discrete openings 1019a arranged along an arc may instead be used in place of a single arcuate slot 1019 to provide discrete depth settings for the row cleaner wheels 1060-1, 1060-2 relative to the guide wheel 1050.

[0123] Fig.171 is a rear perspective view of the rear pillar subframe 1100D. The rear pillar subframe 1100D includes a first pillar 1140-1 and a second pillar 1140-2 separated by a side plate 1142. The side plate 1142 may include a tab 1143, which is received in a slot 1144 of each of the first pillar 1140-1 and the second pillar 1140-2. Alternatively, the side plate 1142 can be attached to the pillars 1140-1, 1140-2 by a welded or bolted connection. Alternatively, the pillars 1140-1, 1140-2 and the side plate 1142 can be manufactured as a single part, such as by casting. Each of the first and second struts 1140-1, 1140-2 includes an aperture 1016 for receiving a threaded connector 1014 for connection with a corresponding side link 1200-1, 1200-2, and each of the first and second struts 1140-1, 1140-2 includes an aperture 1023 for receiving a guide wheel shaft bolt 1051, as described above with reference to Fig.12 as described.

[0124] The rear pillar subframe 1000D may include a scraper 1145 to remove dirt or debris that may accumulate on the guide wheel 1050 during operation. The scraper 1145 may be attached to the side plate 1142 between the rear pillars 1140-1, 1140-2 of the rear pillar subframe 1000D and may include a plate with an arcuate edge 1146 that approximates the contour of the guide wheel 1050 (see Figure 3 , Figure 7 and Figure 8 ). The scraper 1145 can be attached to the side plate 1142 by means of a threaded connector 1148 that extends through an elongated hole 1147 that aligns with an internally threaded aperture 1149 in the side plate 1142. The elongated hole 1147 will allow the scraper 1145 to be adjustably positioned relative to the side plate 1142 to vary the distance from the guide wheel 1050 to accommodate different guide wheel sizes and profiles and to account for wear of the guide wheel tread and the scraper 1145.

[0125] Reference Fig.11, the square opening 1135 in each of the row cleaner wheel support arms 1130-1, 1130-2 and the square shank portion 1063 of the row cleaner wheel axle bolt 1061-1, 1061-2 cooperate to rotationally constrain the row cleaner wheel axle bolt 1061-1, 1061-2 to the row cleaner wheel support arms 1130-1, 1130-2. Each row cleaner wheel axle bolt 1061-1, 1061-2 receives a spacer 1063. Each row cleaner wheel axle bolt 1061-1, 1061-2 extends through a central opening 1064 in each of the respective first and second cleaner wheels 1060-1, 1060-2. A bushing 1065 is received on the end of each row cleaner wheel axle bolt 1061-1, 1061-2, and the bushing is received in a hub 1070 having a central opening 1071. The hub 1070 is secured to the respective first and second row cleaner wheels 1060-1, 1060-2 by nuts 1072 which are threadably received on threaded connectors 1074 which extend through apertures 1066 in the row cleaner wheels 1060-1, 1060-2 and through aligned holes 1073 in the hub 1070. Lug nuts 1075 threadably receive the ends of the axle bolts 1061-1, 1061-2, thereby axially constraining the row cleaner wheels 1060-1, 1060-2 to the respective row cleaner wheel axle bolts 1061-1, 1061-2, while the spacers 1063 and bushings 1065 allow the row cleaner wheels 1060-1, 1060-2 to freely rotate about the respective row cleaner wheel axle bolts 1061-1, 1061-2.

[0126] Return to reference Figure 3 and Fig.12 The guide wheel shaft bolt 1051 is inserted through the alignment holes 1022, 1023 in the corresponding first and second cleaner wheel support arms 1130-1, 1130-2 of the lower subframe 1100C and the pillars 1140-1, 1140-2 of the rear pillar subframe 1100D and through the hub 1052 of the guide wheel 1050 ( Figure 3 ) extends. Spacer bushing 1053 ( Fig.12 ) may be disposed on the guide wheel shaft bolt 1051 on each side of the hub 1052 to keep the guide wheel 1050 centered between the pillars 1140-1, 1140-2. Nuts 1054 are threaded onto the ends of the guide wheel shaft bolt 1051 to secure the guide wheel 1050 to the lower subframe 1100C and the rear pillar subframe 1100D.

[0127] As previously described, the actuator system 1300 may utilize any actuator that provides adjustable downforce and optional lift, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators. In one embodiment, the actuator 1302 comprising the actuator system 1300 is described in U.S. Pat. No. 8,550,020, available from Precision Planting LLC, 23207 Townline Rd, Tremont, IL 61568. Cylinders or as described in U.S. Pat. No. 9,144,189 also available from Precision Planting Cylinder. The downward force applied by the actuator system 1302 on the guide wheel 1050 can be controlled by a controller (e.g., "controller 300" referenced in U.S. Patent No. 8,550,020) or by a fluid control port (e.g., "fluid control port 10" described in PCT Publication No. WO2020 / 056395). The actuators 1302 of each row cleaner assembly 1000 of the planter 10 can be controlled row by row, or by portions of the planter 10 as a group, or collectively across the entire planter 10.

[0128] The amount of downforce desired may be a function of soil conditions and the amount or type of crop residue and the depth at which the row cleaner wheel 1060 is set to engage the soil. For example, in dry soil conditions, a greater downforce may be desired so that the guide wheel 1050 will pack the soil 40 more firmly in front of the opening assembly 234 for forming a better seed groove 38 and preventing or minimizing soil from falling into the seed groove 38 before the seed is deposited. Alternatively, in wet soil conditions, a lesser downforce may be desired. A downforce monitoring system (discussed later) may be used to determine and adjust the downforce applied by the actuator system 1300.

[0129] Fig.18 is a side view of the planter ridge unit 200, as previously described above with reference to Figure 2 1, but with another embodiment of a row cleaner assembly designated by reference numeral 2000. The row cleaner assembly 2000 is mounted to the tool bar 14 and is positioned forward of the furrow opening assembly 234. Again, it should be understood that each row unit 200 of the planter 10 will have an associated row cleaner assembly 2000 that is longitudinally aligned with the corresponding furrow opening assembly 234 of the row unit 200. In the embodiment shown, the row cleaner assembly 2000 includes a guide wheel 2050 (e.g., Fig.192001). The row cleaner assembly 2000 extends toward the rear of the tool bar 14 and is rigidly mounted to the underside of the tool bar 14 by a suitable mounting structure, which may include a mounting plate 2101 and one or more U-bolts 2001, as shown. Alternatively, the row cleaner assembly 2000 may be mounted to the top, rear, or front side of the tool bar 14 by any suitable mounting structure or connector, including bolt brackets or by welding.

[0130] Fig.18A An alternative embodiment of a row cleaner assembly is shown, designated by reference numeral 2000A. The embodiment of row cleaner assembly 2000A is substantially the same as the embodiment of row cleaner assembly 2000, except that the embodiment of 2000A does not include guide wheels.

[0131] Fig.19 yes Fig.18 An enlarged rear perspective view of the row cleaner assembly 2000 is shown. Fig.19A The view and Fig.19 2000A. As the two embodiments of row cleaner assemblies 2000 and 2000A are substantially identical, only embodiment 2000 will be described except for the removal of the guide wheels in embodiment 2000A, recognizing that any reference to guide wheels 2050, guide wheel shafts 2051, and associated components do not apply to the 2000A embodiment.

[0132] Fig. 20 and Fig.21 They are right side view and left side view of the row cleaner assembly 2000, respectively. Fig. 22 and Fig.23 are the front view and the back view respectively, and Fig.24 and Fig.252000 include a frame assembly 2100 supported by a guide wheel 2050 at its rear end. The ridge cleaner wheels 2060-1, 2060-2 are rotatably supported by the frame assembly 2100. Each ridge cleaner wheel 2060-1, 2060-2 includes radially spaced tines 2062 around its circumference. The ridge cleaner wheels 2060-1, 2060-2 are oriented to diverge outwardly and rearwardly so that the tines 2062 of the ridge cleaner wheels 2060-1, 2060-2 are staggered at the front end when they rotate. In operation, as the planter 10 moves in the direction 11 of forward travel, the soil engages with the tines 2062, causing the ridge cleaner wheels 2060-1, 2060-2 to rotate. Because of their orientation, as the row cleaner wheels 2060-1, 2060-2 rotate, they direct any crop residue, soil clods, or other debris laterally outward to provide a row cleaner bed for the rearwardly-aimed furrow opening assembly 234. The guide wheels 2050 are used to compact the soil 40 that would be disturbed by the row cleaner wheels 2060-1, 2060-2 before the furrow 38 is opened by the furrow opening assembly 234. Compacting the soil with the guide wheels 2050 can be helpful in dry soils to prevent the soil 40 from falling into the furrow 38.

[0133] An actuator system 2300 is positioned within the frame assembly 2100 to provide adjustable downforce and optional lift for the guide wheel 2050 and the row cleaner wheels 2060-1, 2060-2. In this embodiment, the actuator system 2300 includes an air bag 2302 and a spring assembly 2310, but the actuator system 2300 can utilize any actuator that provides adjustable downforce and optional lift, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators, as will be discussed in more detail later.

[0134] Fig.26 is a rear perspective view of the frame assembly 2100 with the guide wheel 2050, row cleaner wheels 2060-1, 2060-2 and actuator system 2300 removed for clarity. Fig. 27 is a front perspective view of the frame assembly 2100 with the guide wheel 2050 and actuator system 2300 and the first row cleaner wheel 2060-1 removed, but showing an exploded view of the second row cleaner wheel 2060-2 and its mounting components. Fig.28 is an exploded rear perspective view of the frame assembly 2100. Figure 26 to Figure 28 , the frame assembly 2100 includes an upper subframe 2100A, an intermediate subframe 2100B, a lower subframe 2100C, a rear pillar subframe 2100D, and a first link 2200-1 and a second link 2200-2. The rear pillar subframe 2100D includes a portion of the lower subframe 2100C. The subframes 2100A, 2100B, 2100C, and 2100D will be described in more detail later.

[0135] like Fig.28 As best shown, the middle subframe 2100B is pivotally connected to the upper subframe 2100A at its front end by a threaded connector 2002 received in aligned apertures 2003, 2004 in the respective middle subframes 2100B and upper subframe 2100A. The middle subframe 2100B is pivotally connected at its rear end by a threaded connector 2006 received in aligned apertures 2007, 2008 and 2009 in the respective middle subframes 2100B, rear pillar subframes 2100D and in the lower subframe 2100C. It should be understood that the aperture 2007 in the rear end of the middle subframe 2100B is internally threaded for receiving the threads of the threaded connector 2006. The aperture 2008 in the rear pillar subframe 2100D is sized to pivotally receive the unthreaded shank of the threaded connector 2006, and the aperture 2008 in the lower subframe 2100C is an elongated opening 2008 sized to receive the head of the threaded connector 2006. Thus, the lower subframe 2100C is not connected to the rear pillar subframe by the threaded connector 2006. Instead, the elongated opening 2008 serves as a guide within which the head of the threaded connector 2006 moves.

[0136] The first and second links 2200-1, 2200-2 are pivotally connected at their front ends to the upper subframe 2100A by threaded connectors 2010 received in aligned apertures 2011, 2012 in the respective first and second links 2200-1, 2200-2 and the upper subframe 2100A. The first and second links 2200-1, 2200-2 are pivotally connected at their rear ends to the rear pillar subframe 2100D by threaded connectors 2014 received in aligned apertures 2015, 2016 in the respective first and second links 2200-1, 2200-2 and the rear pillar subframe 2100D.

[0137] The rear pillar subframe 2100D is rotationally fixed to the lower subframe 2100C by a threaded connector 2018, which is received in an arcuate slot 2019 in the lower frame 2100C and threadably engages with a threaded aperture 2021 in the rear pillar subframe 2100D. The rear pillar subframe 2100D is connected to the lower subframe 2100C by a guide wheel shaft bolt 2051, which is received by aligned apertures 2022, 2023 in the respective lower frame 2100C and the rear pillar subframe 2100D. It should be apparent that in the 2000A embodiment where the guide wheel 2050 is omitted, a short bolt can extend through the apertures 2022, 2023 and be fixed by a nut (not shown) in place of the guide wheel shaft bolt 2051. It should be understood that the forward pivot connection between the upper subframe 2100A and the middle subframe 2100B and the links 2200-1, 2200-2 together with the rearward pivot connection between the middle subframe 2100B and the links 2200-1, 2200-2 and the rear pillar subframe 2100D and the lower subframe 2100C provide a four-bar linkage mechanism, which allows the middle subframe 2100B and the lower subframe 2100C to move vertically relative to the upper subframe 2100A which is rigidly fixed to the toolbar 14.

[0138] Continue to refer to Fig.282050, the rear support subframe 2100D may also include an optional depth selector 2400 to change the depth setting of the row cleaner wheels 2060-1, 2060-2 relative to the guide wheel 2050. The depth selector 2400 includes a thumb screw 2024 having a threaded shank and a pin end. The threaded shank of the thumb screw 2024 is threadedly connected to an internal threaded hole 2025 in the lower subframe 2100C, and the pin end of the thumb screw 2024 engages with one of a series of discrete holes 2026, which are arranged in an arc in the rear support subframe 2100D. It should be understood that the relative angle or position of the lower subframe 2100C can be movably adjusted relative to the rear support subframe 2100D by loosening the threaded connector 2018, which passes through the arc slot 2019 and enters the threaded aperture 2021. When the lower subframe 2100C is adjusted to the desired angle or position (the threaded connector moves within the arcuate slot 2019 and the threaded connector 2006 moves within the elongated opening 2009), the thumbscrew 2024 can be turned to cause the pin end to seat within one of the discrete holes 2026. The threaded connector 2018 can then be tightened to secure the lower subframe 2100C to the rear support subframe 2100D. Alternatively, as described above with reference to the row cleaner embodiment 1000 of FIG. 16, the arcuate slot 2019 can be replaced with a series of discrete holes arranged in an arc (not shown, but corresponding to the holes 2019a in FIG. 16), and the thumbscrew 2024 and holes 2019 and 2026 can be eliminated, but the use of the depth selector 2400 described above makes it easier to set the desired angle or position of the lower subframe 2100c relative to the rear support subframe 2100d.

[0139] Continue to refer to Fig.28 , the spring assembly 2310, which comprises a portion of the actuator system 2300 (discussed later), is secured to the middle subframe 2100B by a threaded connector 2028, which is received in aligned apertures 2029, 2030 in the lower rod 2302 of the respective middle subframe 2100B and the spring assembly 2310. The spring assembly 2310 is secured to the upper subframe 2100A by a threaded connector 2032, which is received in aligned apertures 2033 and 2034 in the U-shaped bracket 2320 (discussed later) of the respective upper subframe 2100A and the spring assembly 2310.

[0140] Continue to refer to Fig.28, the threaded connector 2036 passes through the arcuate opening 2037 in the upper subframe 2100A and is received in the aperture 2038 in the middle subframe 2100B. As discussed later, as the middle subframe 2100D moves relative to the upper subframe 2100B (as part of the four-bar linkage), the threaded connector 2036 moves along the arcuate opening 2037. When the threaded connector 2026 abuts the upper end of the arcuate opening 2037, the threaded connector 2026 acts as an upper stopper, preventing the middle subframe 2100B from moving further upward. When the threaded connector 2026 abuts the lower end of the arcuate opening 2037, the threaded connector 2026 acts as a lower stopper, preventing the middle subframe 2100B from moving further downward.

[0141] Fig.29 An exploded front perspective view of the upper subframe 2100A is shown. The upper subframe 2100A includes a first gusset plate 2102-1 and a second gusset plate 2102-2 extending downwardly from the mounting plate 2101 and spaced laterally by a front plate 2104. The gusset plates 2102-1, 2102-2 can have an upper front hook 2103 for receiving a front edge of the mounting plate 2101. The gusset plates 2102-1, 2102-2 can include a gusset tab 2105, which is received in a gusset tab slot 2106 in the mounting plate 2101. Alternatively, an ear plate 2107 having a gusset tab 2109 can be received in the gusset tab slot 2106 in the mounting plate 2101. The ear plate 2107 can be connected by a threaded connector 2108 ( Fig.28 ) are attached to the gussets 2102-1, 2102-2, the threaded connectors 2108 being received in the aligned apertures 2110, 2111 in the respective gussets 2102-1, 2102-2 and the ear plates 2107. The front plate 2104 may include side tabs 2112, which are received in the side tab slots 2113 in the gussets 2102-1, 2102-2. It should be understood that, rather than using tabs and slots to connect the various parts of the upper subframe 2100A, the various parts of the upper subframe 2100A may be connected by welding or by bolted connections. Alternatively, the upper subframe 2100A may be manufactured as a single part, such as by casting.

[0142] The front plate 2104 includes an aperture 2114 through which the upper nipple of the airbag 2302 extends and on which a fitting 2126 (discussed later) can be threadably received. The gussets 2102-1, 2102-2 include apertures 2004 for receiving threaded connectors 2002 for pivotally securing the intermediate subframe 2100B to the gussets 2102-1, 2102-2, as described above with reference to Fig.28Additionally, each of the gussets 2102-1, 2102-2 includes an aperture 2012 for receiving a threaded connector 2010 for pivotally securing the first link 2200-1 and the second link 2200-2 to the gussets 2102-1, 2102-2, as described above with reference to Fig.28 Each of the gussets 2102-1, 2102-2 also includes an aperture 2033 for receiving a threaded connector 2032 that secures a U-shaped bracket of the spring assembly 2310 (discussed later). In addition, each of the gussets 2102-1, 2102-2 also includes an arcuate opening 2037 in which the threaded connector 2036 is movable, as described above with reference to Fig.28 As described.

[0143] Fig.30 An exploded rear perspective view of the intermediate subframe 2100B is shown. The intermediate subframe 2100B includes a base member 2120 and a first side rail 2121-1 and a second side rail 2121-2. The base member 2120 may include side tabs 2122 that are received in side tab recesses 2123 in the side rails 2121-1, 2121-2. The base member 2120 includes an aperture 2124 through which a threaded connector 2125 ( Fig.28 ) for securing the lower end of the air bag 2302 to the base member 2120. It should be understood that instead of using tabs and slots to connect the various parts of the intermediate subframe 2100B, the various parts of the intermediate subframe 2100B can be connected by welding or by bolted connectors. Alternatively, the intermediate subframe 2100B can be manufactured as a single part, for example by casting. Each of the side guides 2121-1, 2122-2 includes a front aperture 2003 for receiving a threaded connector 2002, which is used to pivotally secure the side guides 2121-1, 2121-2 of the intermediate subframe 2100B to the corner plates 2012-1, 2012-2 of the upper subframe 2100A, as described above with reference to Fig.28 Each of the side rails 2121-1, 2122-2 includes a rear aperture 2007 for receiving a threaded connector 2006, as described above with reference to Fig.28 Each of the side rails 2121-1, 2122-2 includes an aperture 2029 for receiving a threaded connector 2028 for attaching a rod of a spring assembly 2310 (discussed later). Each of the side rails 2121-1, 2122-2 includes an aperture 2038 for receiving a threaded connector 2036, which is received within an arcuate opening 2037 of the upper subframe 2100A, as described above with reference to Fig.28 As described.

[0144] Fig.31 An exploded rear perspective view of the lower subframe 2100C is shown. The lower subframe 2100C includes a first row cleaner wheel support arm 2130-1 and a second row cleaner wheel support arm 2130-2, which are connected at their front ends by a front plate 2132. The front plate 2132 may include side lugs 2133, which are received in side lug slots 2134 in the first row cleaner wheel support arm 2130-1 and the second row cleaner wheel support arm 2130-2. It should be understood that instead of using lugs and slots to connect the various parts of the lower subframe 2100C, the various parts of the lower subframe 2100C can be connected by welding or by bolted connectors. Alternatively, the lower subframe 2100C can be manufactured as a single part, such as by casting. Each of the first and second row cleaner wheel support arms 2130-1 and 2130-2 includes a square opening 2135 for receiving row cleaner wheel axle bolts 2061-1, 2061-2 ( Fig. 27 ) of the corresponding one of the square handle portion 2063 ( Fig. 27 ), as will be discussed in more detail later. Each row cleaner wheel support arm 2130-1, 2130-2 also includes an opening 2022 for receiving a guide wheel shaft bolt 2051, such as Fig.28 Each row cleaner wheel support arm 2130-1, 2130-2 also includes an elongated opening 2009 in which a threaded connector 2006 is received, as described above with reference to Fig.28 Each row cleaner wheel support arm 2130-1, 2130-2 also includes an arcuate slot 2019 for receiving a threaded connector 2018, as described above with reference to Fig.28 Each row cleaner wheel support arm 2130-1, 2130-2 also includes an aperture 2025 for receiving a thumb screw 2024, as described above with reference to Fig.28 As described.

[0145] Fig.32is a rear perspective view of the rear pillar subframe 2100D. The rear pillar subframe 2100D includes a first pillar 2140-1 and a second pillar 2140-2 separated by a side plate 2142. The side plate 2142 may include a tab 2143, which is received within a narrow slot 2144 in each of the first pillar 2140-1 and the second pillar 2140-2. Alternatively, the side plate 2142 may be attached to the pillars 2140-1, 2140-2 by a welded or bolted connection. Alternatively, the pillars 2140-1, 2140-2 and the side plate 2142 may be manufactured as a single part, such as by casting. Each of the first pillar 2140-1 and the second pillar 2140-2 includes an aperture 2022, which is aligned with an aperture 2023 in the lower subframe 2100C for receiving an axle wheel bolt 2051, as described above with reference to. Fig.28 Each of the struts 2140-1, 2140-2 also includes: an aperture 2008 through which the threaded connector 2006 extends; an aperture 2016 for receiving the threaded connector 2014; and an internally threaded aperture 2021 for receiving the threaded connector 2018; and a series of apertures 2026 arranged in an arc, the pin ends of the thumbscrews 2024 being received in all of the series of apertures 2026, as described above with reference to Fig.28 As described.

[0146] The rear pillar subframe 2100D may include a scraper 2145 to remove dirt or debris that may accumulate on the guide wheel 2050 during operation. The scraper 2145 may be attached to the side plate 2142 between the rear pillars 2140-1, 2140-2 of the rear pillar subframe 2100D and may include a plate with an arcuate edge 2146 that approximates the contour of the guide wheel 2050 (see Fig.19 ). The scraper 2145 can be attached to the side plate 2142 by means of a threaded connector 2148 that extends through an elongated hole 2147 that aligns with an internally threaded aperture 2149 in the side plate 2142. The elongated hole 2147 will allow the scraper 2145 to be adjustably positioned relative to the side plate 2142 to vary the distance from the guide wheel 2050 to accommodate different guide wheel sizes and profiles and to account for wear of the guide wheel tread and the scraper 2145.

[0147] Reference Fig. 27, the square opening 2135 in each of the row cleaner wheel support arms 2130-1, 2130-2 and the square shank portion 2063 of the row cleaner wheel axle bolt 2061-1, 2061-2 cooperate to rotationally constrain the row cleaner wheel axle bolt 2061-1, 2061-2 to the row cleaner wheel support arms 2130-1, 2130-2. Each row cleaner wheel axle bolt 2061-1, 2061-2 receives a spacer 2063. Each row cleaner wheel axle bolt 2061-1, 2061-2 extends through a central opening 2064 in each of the respective first and second cleaner wheels 2060-1, 2060-2. A bushing 2065 is received on the end of each row cleaner wheel axle bolt 2061-1, 2061-2, and the bushing is received in a hub 2070 having a central opening 2071. The hub 2070 is secured to the respective first and second row cleaner wheels 2060-1, 2060-2 by nuts 2072 which are threadably received on threaded connectors 2074 which extend through apertures 2066 in the row cleaner wheels 2060-1, 2060-2 and through aligned holes 2073 in the hub 2070. Lug nuts 2075 threadably receive the ends of axle bolts 2061-2, 2061-2, thereby axially constraining the row cleaner wheels 2060-1, 2060-2 to the respective row cleaner wheel axle bolts 2061-2, 2061-2, while the spacers 2063 and bushings 2065 allow the row cleaner wheels 2060-1, 2060-2 to freely rotate about the respective row cleaner wheel axle bolts 2061-2, 2061-2.

[0148] Return to reference Fig.19 and Fig.28 The guide wheel shaft bolt 2051 is inserted through the alignment holes 2022, 2023 in the corresponding first and second cleaner wheel support arms 2130-1, 2130-2 of the lower subframe 2100C and the pillars 2140-1, 2140-2 of the rear pillar subframe 2100D and through the hub 2052 of the guide wheel 2050 ( Fig.19 ) extends. Spacer bushing 2053 ( Fig.28 ) may be disposed on the guide wheel shaft bolt 2051 on each side of the hub 2052 to keep the guide wheel 2050 centered between the pillars 2140-1, 2140-2. Nuts 2054 are threaded onto the ends of the guide wheel shaft bolt 2051 to secure the guide wheel 2050 to the lower subframe 2100C and the rear pillar subframe 2100D.

[0149] Fig.33 is an exploded perspective view of the actuator system 2300 including the airbag 2302 and the spring assembly 2310. Fig.29Combined Fig.33 , the airbag 2302 is secured at its upper end by a fitting 2126 which threadably receives a connector 2127 which extends through an aperture 2114 in the front plate 2040 of the upper subframe 2100A. Fig.28 and Fig.30 Combined Fig.33 , the airbag 2302 is secured at its lower end by a threaded connector 2125 that extends through an aperture 2124 in the base member 2120 of the intermediate subframe 2100B. Fig. 27 , Fig.28 and Fig.29 Combined Fig.33 , the spring assembly 2310 is secured to the middle subframe 2100B and is received between the gussets 2102-1, 2102-2 of the upper subframe 2100A in front of the front plate 2104 and in front of the airbag 2302. The spring assembly 2310 includes a rod 2312 having an internally threaded aperture 2030 in which a threaded connector 2028 is received, as described above with reference to Fig.28 The transverse bore 2314 passes through the rod 2312 transversely to the longitudinal axis of the rod. The rod 2312 includes a transverse passage 2316 sized to receive the head of a bolt 2318 to prevent the bolt 2318 from rotating. The shaft of the bolt 2318 passes through an aperture 2319 in the U-shaped bracket 2320. The upwardly turned end of the U-shaped bracket 2320 includes an aperture 2034 that receives a threaded connector 2032, as described above with reference to Fig.28 The shaft of bolt 2318 receives collar 2322. Spring 2324 is seated on collar 2322. The upper end of bolt 2318 receives washer 2326 and threadably receives nut 2328. It should be understood that because rod 2312 is fixed to middle subframe 2100B and U-shaped bracket 2320 is fixed to upper subframe 2100A, when nut 2327 is tightened onto bolt 2317, spring 2325 is compressed, tending to rotate in a clockwise direction (such as Fig.282317 (shown) pivots the middle subframe 2100B about an axis passing through a threaded connector 2002, which pivotally secures the front end of the middle subframe 2100B to the upper subframe 2100A. It should be appreciated, therefore, that the spring assembly 2310 serves to provide a lifting force at the rear end of the middle subframe 2100B (and thereby provides a lifting force to the lower subframe 2100C and the rear support subframe 2100D). By tightening the nut 2327 onto the bolt 2317, the compression of the spring 2325 increases the lifting force on the middle subframe 2100B. By loosening the nut 2327 on the bolt 2317, the amount of lifting force can be reduced. In one embodiment, the amount of lifting force provided by the spring assembly is sufficient to lift the ridge cleaner wheels 2060-1, 2060-2 out of contact with the soil 40. Although the spring assembly 2310 is shown as having two springs 2325, the spring assembly 2310 may be constructed of a single spring 2325 received on a single bolt 2317 positioned at the midpoint of the rod 2312. On the other hand, the airbag 2302 applies a downward force to the intermediate sub-frame 2100B to counteract the upward force of the spring assembly 2310. By increasing and decreasing the air pressure in the airbag 2302, causing the airbag 2302 to expand and contract, respectively, the desired amount of downward force applied to the guide wheel 2050 and the row cleaner wheels 2060-1, 2060-2 can be achieved.

[0150] Although the above embodiments of the actuator system 2300 describe an air bag 1302 in combination with a spring assembly 2310, it should be understood that it will be appropriate that the actuator system 2300 can utilize any actuator that provides an adjustable downforce and optional upforce. The downforce applied to the guide wheel 2050 by the actuator system 2302 can be controlled by a controller (e.g., "controller 300" referenced in U.S. Patent No. 8,550,020) or by a fluid control port (e.g., "fluid control port 10" described in PCT Publication No. WO2020 / 056395). The actuator 2302 of each row cleaner assembly 2000 of the planter 10 can be controlled row by row, or by portions of the planter 10 as a group, or collectively across the entire planter 10.

[0151] The amount of downforce desired may be a function of soil conditions and the amount or type of crop residue and the depth at which the row cleaner wheel 2060 is set to engage the soil. For example, in dry soil conditions, a greater downforce may be desired so that the guide wheel 2050 will pack the soil 40 more firmly in front of the opening assembly 234 for forming a better seed groove 38 and preventing or minimizing soil from falling into the seed groove 38 before the seed is deposited. Alternatively, a lesser downforce may be desired in wet soil conditions. A downforce monitoring system (discussed later) may be used to determine and adjust the downforce applied by the actuator system 2300.

[0152] Fig.34 is a side view of the planter ridge unit 200, as previously described above with reference to Figure 2 1, but with yet another embodiment of a row cleaner assembly designated by reference numeral 3000. The row cleaner assembly 3000 is mounted to the tool bar 14 and is positioned forward of the furrow opening assembly 234. Again, it should be understood that each row unit 200 of the planter 10 will have an associated row cleaner assembly 3000 that is longitudinally aligned with the corresponding furrow opening assembly 234 of the row unit 200. In the embodiment shown, the row cleaner assembly 3000 includes a guide wheel 3050 (e.g., Fig.35 3000). The row cleaner assembly 3000 extends toward the rear of the tool bar 14 and is rigidly mounted to the underside of the tool bar 14 by a suitable mounting structure, which may include a mounting plate 3101 and one or more U-bolts 3001, as shown. Alternatively, the row cleaner assembly 3000 may be mounted to the top, rear, or front side of the tool bar 14 by any suitable mounting structure or connector, including a bolt bracket or by welding.

[0153] Fig.34A An alternative embodiment of a row cleaner assembly is shown, designated by reference numeral 3000A. The embodiment of row cleaner assembly 3000A is substantially the same as the embodiment of row cleaner assembly 3000, except that the embodiment of 3000A does not include guide wheels 3050. In addition, the embodiment of 3000A may omit the rear support subframe 3100B (described later).

[0154] Fig.35 yes Fig.34 An enlarged rear perspective view of the row cleaner assembly 3000 is shown. Fig.35A The view and Fig.35, but showing an embodiment of a row cleaner assembly 3000A without the guide wheels and without the rear support subframe 3100D (discussed later). Since the two embodiments of row cleaner assemblies 3000 and 3000A are substantially identical, only embodiment 3000 will be described except for the removal of the guide wheels (and optionally the rear support subframe 3100D discussed later) in embodiment 3000A, recognizing that any reference to guide wheels 3050, guide wheel shafts 3051, and associated components will not apply to the 3000A embodiment.

[0155] Fig.36 and Fig.37 They are right side view and left side view of the row cleaner assembly 3000, respectively. Fig.38 and Fig.39 are the front view and the back view respectively, and Fig.40 and Fig.41 3060-1, 3060-2 are rotatably supported by the frame assembly 3100. Each ridge cleaner wheel 3060-1, 3060-2 includes radially spaced tines 3062 around its circumference. The ridge cleaner wheels 3060-1, 3060-2 are oriented to diverge outwardly and rearwardly so that the tines 3062 of the ridge cleaner wheels 3060-1, 3060-2 are staggered at the front end when they rotate. In operation, as the planter 10 moves in the direction 11 of forward travel, the soil engages with the tines 3062, causing the ridge cleaner wheels 3060-1, 3060-2 to rotate. Due to their orientation, as the row cleaner wheels 3060-1, 3060-2 rotate, they direct any crop residue, clods of soil, or other debris laterally outward to provide a row cleaner bed for the rearwardly-aimed furrow opening assembly 234. The guide wheels 3050 are used to compact the soil 40 that would be disturbed by the row cleaner wheels 3060-1, 3060-2 before the furrow 38 is opened by the furrow opening assembly 234. Compacting the soil with the guide wheels 3050 can be helpful in dry soils to prevent the soil 40 from falling into the furrow 38.

[0156] An actuator system 3300 is positioned within the frame assembly 3100 to provide adjustable downforce and optional upforce to the guide wheel 3050 and the rower wheels 3060-1, 3060-2. In this embodiment, the actuator system 3300 utilizes two air bags 3302 and 3304 ( Fig.45 ), but the actuator system 3300 can utilize any actuator that provides adjustable downforce and optional lift, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators, as will be discussed in more detail later.

[0157] Fig.42is a rear perspective view of the frame assembly 3100 with the guide wheel 3050, row cleaner wheels 3060-1, 3060-2 and actuator system 3300 removed for clarity. Fig.43 is a front perspective view of the frame assembly 3100 with the guide wheel 3050 and actuator system 3300 and the first row cleaner wheel 3060-1 removed, but showing an exploded view of the second row cleaner wheel 3060-2 and its mounting components. Fig.44 is an exploded rear perspective view of the frame assembly 3100. Figure 42 to Figure 44 , the frame assembly 3100 includes an upper subframe 3100A, a middle subframe 3100B, a lower subframe 3100C, a rear pillar subframe 3100D, and a first link 3200-1 and a second link 3200-2. The rear pillar subframe 3100D includes a portion of the lower subframe 3100C. Fig.45 31 is an exploded front perspective view showing the lower sub-frame 3100C and the rear pillar sub-frame 3100D. Fig.46 A perspective view of the intermediate subframe 3100B and the links 3200-1, 3200-2 is shown, with the first and second airbags 3302, 3304 of the actuator assembly 3300 shown in phantom for clarity. The subframes 3100A, 3100B, 3100C, 3100D and the links 3200-1, 3200-2 will be described in more detail later.

[0158] like Fig.44As best shown, the middle subframe 3100B is pivotally connected to the upper subframe 3100A at its front end by a threaded connector 3002 received in aligned apertures 3003, 3004 in the respective middle subframe 3100B and upper subframe 3100A. The threaded connector 3002 and apertures 3003, 3004 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the aperture 2003 in the middle subframe 3100B may be a square aperture that receives a square shank portion of the threaded connector 3002. The aperture 3004 in the upper subframe 3100A may be sized to receive a sleeve 3009 and a collared bushing 3010, which are retained by a nut 3011 received on the threaded end of the threaded connector 3002. The middle subframe 3100B is pivotally connected at its rear end by a threaded connector 3006 received in apertures 3007, 3008 in the respective middle subframe 3100B and in the lower subframe 3100C. The threaded connector 3006 and apertures 3007, 3008 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the aperture 3008 in the lower subframe 3100C may be a square aperture that receives a square shank portion of the threaded connector 3006. The aperture 3007 in the middle subframe 3100B may be sized to receive a sleeve 3009 and a socket bushing 3010, which is retained by a nut 3011 received on the threaded end of the threaded connector 3006.

[0159] The first and second links 3200-1, 3200-2 are pivotally connected to the upper subframe 3100A at their front ends by threaded connectors 3012 received in aligned apertures 3013, 3014 in the respective first and second links 3200-1, 3200-2 and upper subframe 3100A. The threaded connectors 3012 and apertures 3013, 3014 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the apertures 3014 in the upper subframe 3100A may be square apertures that receive the square shank portions of the threaded connectors 3012. The apertures 3013 in the first and second links 3200-1, 3200-2 may be sized to receive a sleeve 3009 and a socket bushing 3010, which are retained by a nut 3011 received on the threaded ends of the threaded connector 3012. The first and second links 3200-1, 3200-2 are pivotally connected to the lower subframe 3100C at their rear ends by threaded connectors 3016 received in aligned apertures 3017, 3018 in the respective first and second links 3200-1, 3200-2 and the lower subframe 3100C. The threaded connectors 3016 and apertures 3017, 3018 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the aperture 3017 in the lower subframe 3100C can be a square aperture that receives the square shank portion of the threaded connector 3016. The apertures 3018 in the first link 3200-1 and the second link 3200-2 can be sized to receive the sleeve 3009 and the socket bushing 3010, which are retained by the nut 3011 received on the threaded end of the threaded connector 3016.

[0160] The rear pillar subframe 3100D is connected to the lower subframe 3100C by aligning holes 3025, 3026 in the rear pillar subframe 3100D and the lower subframe 3100C (see Fig.45 ) is pivotally connected to the lower subframe 3100C. Fig.43 and Fig.4514, the rear pillar subframe 3100D is also linked to the lower subframe 3100C via the hooked arm 3402 of the depth selector 3400 (discussed later). It should be appreciated that the forward pivotal connection of the upper subframe 3100A with the middle subframe 3100B and the links 3200-1, 3200-2 together with the rearward pivotal connection of the middle subframe 3100B and the links 3200-1, 3200-2 with the lower subframe 3100C provides a four-bar linkage that allows the middle subframe 3100B and the lower subframe 3100C to move vertically relative to the upper subframe 3100A which is rigidly fixed to the toolbar 14. It should be apparent that in the 3000A embodiment, the entire rear pillar subframe 3100D can be omitted, as the primary purpose of the rear pillar subframe 3100D is to support the guide wheels 3050 which are not present in the 3000A embodiment. However, as explained in detail later, the rear post subframe 3100D cooperates with the lower subframe 3100C to enable depth selection via the depth selector 3400. Thus, if depth selection is desired, embodiments of the row cleaner assembly 3000A may be used with the rear post subframe 3100D, thereby omitting only the guide wheel 3050 and guide wheel shaft bolt 3051.

[0161] Fig.47 An exploded front perspective view of the upper subframe 3100A is shown. The upper subframe 3100A includes a first gusset plate 3102-1 and a second gusset plate 3102-2 extending downwardly from the mounting plate 3101 and laterally spaced apart by the front plate 3104. The gusset plates 3102-1, 3102-2 may include apertures 3004, 3014 for receiving threaded connectors 3002, 3012, respectively, for attaching the intermediate subframe 3100B and the rails 3200-1, 3200-2, respectively, as described above with reference to Fig.44 As described. The front plate 3104 may include side tabs 3105, which are received in the side tab slots 3106 in the gussets 3102-1, 3102-2. The front plate 3104 includes a recessed portion 3107 to accommodate the insertion of the threaded connector 3012 into the apertures 3014 in the gussets 3102-1, 3102-2. The connecting plate 3108 includes an upper tab 3109, which is received in the tab slot 3110 in the mounting plate 3101. The connecting plate 3108 also includes a bottom hook 3111, which receives and engages the rear edge and recessed area of ​​the front plate 2004. It should be understood that instead of using tabs and slots to connect the various parts of the upper subframe 3100A, the various parts of the upper subframe 3100A can be connected by welding or by bolted connectors. Alternatively, the upper subframe 3100A can be manufactured as a single part, such as by casting.

[0162] Fig.48An exploded rear perspective view of the intermediate subframe 3100B is shown. The intermediate subframe 3100B includes a front base member 3120 and a rear base member 3122 and a first side rail 3121-1 and a second side rail 3121-2. The base members 3120, 3122 may include side tabs 3123, which are received in side tab recesses 3124 in the side rails 3121-1, 3121-2. It should be understood that instead of using tabs and slots to connect the various parts of the intermediate subframe 3100B, the various parts of the intermediate subframe 3100B can be connected by welding or by bolted connectors. Alternatively, the intermediate subframe 3100B can be manufactured as a single part, such as by casting. The front base member 3120 includes an orifice 3125, through which the connector of the first airbag 3302 extends and receives the accessory 3126 ( Fig.43 ), the fitting 3126 threadably secures the second airbag 3304 to the front base member 3120. The rear base member 3122 includes an aperture 3127 through which the connector of the first airbag actuator 3302 extends and receives a fitting 3128 ( Fig.46 ), the fitting 3128 threadably secures the first airbag 3302 to the rear base member 3122. Each of the side rails 3121-1, 3122-2 includes a front aperture 3003 for receiving a threaded connector 3002 for pivotally securing the side rails 3121-1, 3121-2 of the intermediate subframe 3100B to the gussets 3012-1, 3012-2 of the upper subframe 3100A, as described above with reference to Fig.44 Each of the side rails 3121-1, 3122-2 includes a rear aperture 3007 for receiving a threaded connector 3006, as described above with reference to Fig.44 as described.

[0163] Fig.49An exploded rear perspective view of the first link 3200-1 and the second link 3200-2 is shown. The first link 3200-1 and the second link 3200-2 can be connected by a front plate 3202 and a rear plate 3204. Each of the front plate 3202 and the rear plate 3204 can include a side tab 3203, which is received in a side tab recess 3205 in the links 3200-1, 3200-2. A stiffening plate 3206 can be provided to strengthen the front plate 3202. The stiffening plate 3206 can include a tab 3207, which is received in a tab slot 3208 in the front plate 3202 and the links 3200-1, 3200-2. It should be understood that instead of using tabs and slots to connect the various parts of the intermediate subframe 3100B, the various parts of the intermediate subframe 3100B can be connected by welding or by bolted connectors. Alternatively, the intermediate subframe 3100B may be manufactured as a single part, for example by casting. The front plate member 3202 may include an aperture 3210 for receiving a threaded connector (not shown) for attaching the first airbag actuator 3302 and the second airbag actuator 3304 to the front plate member 3202 (see Fig.46 ).

[0164] Fig.50 An exploded rear perspective view of the lower subframe 3100C is shown. The lower subframe 3100C includes a first row cleaner wheel support arm 3130-1 and a second row cleaner wheel support arm 3130-2, which are connected at their front ends by a front plate 3132. The front plate 3132 may include side lugs 3133, which are received in side lug slots 3134 in the first row cleaner wheel support arm 3130-1 and the second row cleaner wheel support arm 3130-2. The rear plate 3136 may be arranged to laterally constrain the rear ends of the row cleaner wheel support arms 3130-1, 3130-2. The rear plate 3136 may include side lugs 3137, which are received in side lug slots 3138 in the row cleaner wheel support arms 3130-1, 3130-2. It should be understood that rather than using tabs and slots to connect the various parts of the lower subframe 3100C, the various parts of the lower subframe 3100C can be connected by welding or by bolted connections. Alternatively, the lower subframe 3100C can be manufactured as a single part, such as by casting. Each of the row cleaner wheel support arms 3130-1, 3130-2 also includes an opening 3026 that aligns with an aperture 3025 in the rear support subframe 3100D for receiving a threaded connector 3024 for pivotally attaching the lower subframe 3100C to the rear support subframe 3100D (see Fig.45Each row cleaner wheel support arm 3130-1, 3130-2 also includes an aperture 3008, 3017 for receiving a corresponding threaded connector 3006, 3008 and a connecting rod 3200-1, 3200-2 of a corresponding intermediate subframe 3100B, as described above with reference to Fig.44 Each of the first and second row cleaner wheel support arms 3130-1, 3130-2 includes a square opening 3135 for receiving a square shank portion of a respective one of the row cleaner wheel axle bolts 3061-1, 3061-2, as will be discussed in more detail later. The front plate 3132 may include a tab slot 3153 for a depth selector 3400 discussed later.

[0165] Fig.51 is a rear perspective view of the rear pillar subframe 3100D. The rear pillar subframe 3100D includes a first pillar 3140-1 and a second pillar 3140-2, which are separated by a side plate 3142 at their rear ends. The side plate 3142 may include a tab 3143, which is received in a narrow slot 3144 of each of the first pillar 3140-1 and the second pillar 3140-2. Alternatively, the side plate 3142 can be attached to the pillars 3140-1, 3140-2 by welding or bolted connections. Alternatively, the pillars 3140-1, 3140-2 and the side plate 3142 can be manufactured as a single part, such as by casting. Each of the pillars 3140-1, 3140-2 includes an aperture 3022 for receiving an axle wheel bolt 3051, as described above with reference to Fig.44 In this embodiment, each of the struts 3140-1, 3140-2 includes a forwardly extending arm 3141-1, 3141-2 connected at its forward end by a cross member 3152. The cross member 3152 includes an aperture 3153 for a depth selector 3400 discussed later.

[0166] The rear pillar subframe 3100D may include a scraper 3145 to remove dirt or debris that may accumulate on the guide wheel 3050 during operation. The scraper 3145 may be attached to the side plate 3142 between the rear pillars 3140-1, 3140-2 of the rear pillar subframe 3100D and may include a plate with an arcuate edge 3146 that approximates the contour of the guide wheel 3050 (see FIG. Fig.35). The scraper 3145 can be attached to the side plate 3142 by means of a threaded connector 3148 that extends through an elongated hole 3147 that aligns with an internally threaded aperture 3149 in the side plate 3142. The elongated hole 3147 will allow the scraper 3145 to be adjustably positioned relative to the side plate 3142 to vary the distance from the guide wheel 3050 to accommodate different guide wheel sizes and profiles and to account for wear of the guide wheel tread and the scraper 3145.

[0167] Reference Fig.45 , the depth selector 3400 enables the angle or position of the lower subframe 3100C to be selectively adjusted relative to the rear pillar subframe 3100D. The depth selector 3400 includes laterally spaced hook arms 3402-1, 3402-2, each of which has a plurality of notches 3404 formed on an upper surface thereof. Each of the hook arms 3402-1, 3402-2 can be attached to the lower subframe 3100C by a tab 3405 received in a tab slot 3406 in the front plate 3132 of the lower subframe 3100C. Alternatively, the hook arms 3402-1, 3402-2 can be attached to the lower subframe 3100C by any suitable means, such as by welding or bolting. As described above, the depth selector 3400 includes laterally spaced hook arms 3402-1, 3402-2, each of which has a plurality of notches 3404 formed on an upper surface thereof. Fig.45 Combined Fig.43 As shown, the hook arms 3402-1, 3402-2 extend on the front cross member 3152 of the rear pillar subframe 3100D. Each hook arm 3402-1, 3402-2 includes a front abutment 3408 and a rear abutment 3410. Fig.43 , it will be appreciated that the abutments 3408, 3410 will engage the front cross member 3152, limiting the angle of rotation that can be rotated by the lower subframe 3100C about the axis of the threaded connector 3024, which pivotally connects the lower subframe 3100C to the rear pillar subframe 3100D. The handle 3412 is attached to the handle shaft 3414. The handle shaft 3414 passes between the laterally spaced hook arms 3402-1, 3402-2 and extends through the collar 3415 and through the aperture 3153 in the front end of the rear pillar subframe 3100D. The spring 3416 is received on the end of the handle shaft 3414 and retained by the washer 3417 and the clip 3418. The spring 3416 biases the handle 3412 downwardly so that the handle 3412 is received within one of the plurality of recesses 3404 in the upper surface of the hook arms 3402-1, 3402-2.

[0168] To adjust the angle or position of the lower subframe 3100C relative to the rear post subframe (thereby increasing or decreasing the depth of penetration into the soil by the row cleaner wheels 3060-1, 3060-2), the operator grasps the handle 3412 and applies an upward force to cause the spring 3416 to compress, disengaging the handle 3412 from the notch 3402. With the handle disengaged from the notch, the operator can pivot the lower subframe 3100C relative to the rear post subframe 3100D about the axis of the threaded connector 3024, thereby pivotally connecting the lower subframe 3100C to the rear post subframe 3100D. Once the lower subframe is at the desired angle or position, the operator releases the upward pressure on the handle 3412, and the spring bias re-seats the handle 3412 in the corresponding notch 3404, thereby securely retaining the lower subframe 3100C at the desired angle or position relative to the rear post subframe 3100D corresponding to the desired row cleaner wheel depth.

[0169] Reference Fig.43 The square opening 3135 in each of the row cleaner wheel support arms 3130-1, 3130-2 is configured to receive the square shank portion of the row cleaner wheel axle bolt 3061-1, 3061-2 (not shown, but see Fig. 27As an example. The square opening 3135 cooperates with the square shank portion of the row cleaner wheel axle bolt 3061-1, 3061-2 to rotationally constrain the row cleaner wheel axle bolt 3061-1, 3061-2 to the row cleaner wheel support arm 3130-1, 3130-2. Each row cleaner wheel axle bolt 3061-1, 3061-2 extends through a central opening 3064 in each of the respective first cleaner wheels 3060-1 and second cleaner wheels 3060-2. A bushing 3065 is received on the end of each row cleaner wheel axle bolt 3061-1, 3061-2, and the bushing is received in a hub 3070 having a central opening 3071. The hub 3070 is secured to the respective first and second row cleaner wheels 3060-1, 3060-2 by nuts 3072 which are threadably received on threaded connectors 3074 which extend through apertures 3066 in the row cleaner wheels 3060-1, 3060-2 and through aligned holes 3073 in the hub 3070. Lug nuts 3075 threadably receive the ends of axle bolts 3061-1, 3061-2, thereby axially constraining the row cleaner wheels 3060-1, 3060-2 to the respective row cleaner wheel axle bolts 3061-1, 3061-2, while bushings 3065 allow the row cleaner wheels 3060-1, 3060-2 to freely rotate about the respective row cleaner wheel axle bolts 3061-1, 3061-2. Spacers (not shown) may be provided on the row cleaner shaft bolts 3061-1, 3061-2 to position the row cleaner wheels 3060-1, 3060-2 outwardly away from the row cleaner wheel support arms 3130-1, 3130-2. Fig.43 Also shown is a scraper 3076 which may be provided on the row cleaner shaft bolts 3061-1, 3061-2 to scrape dirt or mud from the row cleaner wheels 3060-1, 3060-2 as they rotate.

[0170] Reference Fig.35 and Fig.44 , the guide wheel shaft bolt 3051 passes through the hole 3022 in the rear pillar subframe 3100D and through the hub 3052 of the guide wheel 3050 ( Fig.35 ) extends. Spacer bushing 3053 ( Fig.44 ) may be provided on the guide wheel shaft bolt 3051 on each side of the hub 3052 to keep the guide wheel 3050 centered between the pillars 3040-1, 3040-2. Nuts 3054 are threaded onto the ends of the guide wheel shaft bolt 3051 to secure the guide wheel 3050 to the rear pillar subframe 3100D.

[0171] Reference Fig.44 and Fig.46, the actuator system 3300 may include a first airbag 3302 and a second airbag 3304, which are arranged in the middle subframe 3100B and cooperate with the connecting rods 3200-1, 3200-2. The first airbag 3302 is connected to the rear plate 3122 of the middle subframe 3100B at the rear end of the second airbag 3304, and is connected to the side plate 3202 between the first connecting rod 3200-1 and the second connecting rod 3200-2 at the front end. The second airbag 3404 is connected to the same side plate 3202 at the rear end thereof, and is connected to the front plate 3120 of the middle subframe 3100B at the front end thereof. As schematically shown in Figure 52A, as the pressure in the first or rear airbag 3302 increases, causing the first or rear airbag 3302 to expand and causing the second or front airbag 3404 to collapse, downward pressure and downward rotational movement will be applied, as indicated by the directional arrows in Figure 52A, downwardly pressurizing the lower subframe 3100C and the rear support subframe 3100D (as represented by the dotted line relative to the solid line), causing the guide wheel 3050 and the ridge cleaner wheels 3060-1, 3060-2 to move downward or apply greater downward pressure on the soil 40. Conversely, as schematically shown in Figure 52B, as the pressure in the second and front airbags 3404 increases, causing the second and front airbags 3404 to expand and causing the first or rear airbags 3302 to collapse, a lifting force and upward rotational motion will be applied, as indicated by the directional arrows in Figure 52B, pressuring the lower subframe 3100C and the rear support subframe 3100D upward (as represented by the dashed lines relative to the solid lines), causing the guide wheel 3050 and the row cleaner wheels 3060-1, 3060-2 to move upward or apply less downward force on the soil 40. Therefore, it should be understood that by increasing and decreasing the air pressure in the first and second airbags 3302, 3304, causing them to expand and contract, respectively, a desired amount of downward force applied to the guide wheel 3050 and the row cleaner wheels 3060-1, 3060-2 can be achieved.

[0172] The first actuator 3302 and the second actuator 3304 can be any type of single-acting or double-acting actuator that can be configured to provide an adjustable downforce and optional lift force, including pneumatic cylinders, hydraulic cylinders, airbags, and electromechanical actuators, rather than airbags for the actuator system 3300. In still other embodiments, a single-acting actuator can be utilized, such as an airbag and front spring assembly, similar to the spring assembly 2300 described above with respect to the second row cleaner assembly embodiment 2000. The downforce applied by the actuator system 3300 on the guide wheel 3050 and the row cleaner wheels 3060-1, 3060-2 can be controlled by a controller (e.g., "controller 300" referenced in U.S. Pat. No. 8,550,020) or by a fluid control port (e.g., "fluid control port 10" described in PCT Publication No. WO2300 / 056395). The actuator system 3300 of each row cleaner assembly 3000 of the planter 10 can be controlled row by row, or by portions of the planter 10 as a group, or collectively across the entire planter 10.

[0173] The amount of downward force desired may be a function of soil conditions and the amount or type of crop residue and the depth at which the row cleaner wheel 3060 is set to engage the soil. For example, in dry soil conditions, a greater downward force may be desired so that the guide wheel 3050 will pack the soil 40 more firmly in front of the opening assembly 234 to form a better seed groove 38 and prevent or minimize soil from falling into the seed groove 38 before the seed is deposited. Alternatively, in wet soil conditions, a less downward force may be desired. A downward force monitoring system (discussed later) may be used to determine and adjust the downward force applied by the actuator system 3300.

[0174] Fig.53 is a side view of the planter ridge unit 200, as previously described above with reference to Figure 2 1, but with yet another embodiment of a row cleaner assembly designated by reference numeral 4000. The row cleaner assembly 4000 is mounted to the tool bar 14 and is positioned forward of the furrow opening assembly 234. Again, it should be understood that each row unit 200 of the planter 10 will have an associated row cleaner assembly 4000 that is longitudinally aligned with the corresponding furrow opening assembly 234 of the row unit 200. In the embodiment shown, the row cleaner assembly 4000 includes a guide wheel 4050 (e.g., Fig.54). The row cleaner assembly 4000 extends toward the rear of the tool bar 14 and is rigidly mounted to the front side of the tool bar 14 by a suitable mounting structure, which may include a pair of mounting brackets 4101 bolted to a plate or gusset fixed to the tool bar 14. Alternatively, the row cleaner assembly 4000 may be mounted to the top side, rear side, or underside of the tool bar 14 by any suitable mounting structure or connector, including bolt brackets or by welding.

[0175] Fig.53A An alternative embodiment of a row cleaner assembly is shown, designated by reference numeral 4000A. The embodiment of row cleaner assembly 4000A is substantially the same as the embodiment of row cleaner assembly 4000, except that the embodiment of 4000A does not include guide wheels 4050. In addition, the embodiment of 4000A may omit the rear support subframe 4100B (described later).

[0176] Fig.54 yes Fig.53 An enlarged rear perspective view of the row cleaner assembly 4000 is shown. Fig.54A The view and Fig.54 4000A) are shown without the guide wheels 4050 and without the rear support subframe 4100D (discussed later). Since the two embodiments of the row cleaner assemblies 4000 and 4000A are substantially identical, only embodiment 4000 will be described except for the removal of the guide wheels (and optionally the rear support subframe 4100D discussed later) in embodiment 4000A, recognizing that any reference to the guide wheels 4050, guide wheel shaft 4051, and associated components will not apply to the 4000A embodiment.

[0177] Fig.55 and Fig.56 They are right side view and left side view of the row cleaner assembly 4000, respectively. Fig.57 and Fig.58 are the front view and the back view respectively, and Fig.59 and Fig.604060-1, 4060-2 are rotatably supported by the frame assembly 4100. Each ridge cleaner wheel 4060-1, 4060-2 includes radially spaced tines 4062 around its circumference. The ridge cleaner wheels 4060-1, 4060-2 are oriented to diverge outwardly and rearwardly so that the tines 4062 of the ridge cleaner wheels 4060-1, 4060-2 are staggered at the front end when they rotate. In operation, as the planter 10 moves in the direction 11 of forward travel, the soil engages with the tines 4062, causing the ridge cleaner wheels 4060-1, 4060-2 to rotate. Because of their orientation, as the row cleaner wheels 4060-1, 4060-2 rotate, they direct any crop residue, clods of soil, or other debris laterally outward to provide a row cleaner bed for the rearwardly-aimed furrow opening assembly 234. The guide wheels 4050 are used to compact the soil 40 that would be disturbed by the row cleaner wheels 4060-1, 4060-2 before the furrow 38 is opened by the furrow opening assembly 234. Compacting the soil with the guide wheels 4050 can be helpful in dry soils to prevent the soil 40 from falling into the furrow 38.

[0178] An actuator system 4300 is positioned within the frame assembly 4100 to provide adjustable downforce and optional upforce to the guide wheel 4050 and the rower wheels 4060-1, 4060-2. In this embodiment, the actuator system 4300 utilizes two air bags 4302 and 4304 ( Fig.63 ), but the actuator system 4300 can utilize any actuator that provides adjustable downforce and optional lift, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators, as will be discussed in more detail later.

[0179] Fig.61 It is a rear perspective view of the frame assembly 4100, with the guide wheel 4050 and the ridger wheels 4060-1 and 4060-2 removed for clarity. Fig.62 is a front perspective view of the frame assembly 4100 with the guide wheel 4050 and actuator system 4300 and the first row cleaner wheel 4060-1 removed, but showing an exploded view of the second row cleaner wheel 4060-2 and its mounting components. Fig.63 is an exploded rear perspective view of the frame assembly 4100. Fig.64 , the frame assembly 4100 includes an upper subframe 4100A, a middle subframe 4100B, a lower subframe 4100C, a rear pillar subframe 4100D, and a first link 4200-1 and a second link 4200-2. The rear pillar subframe 4100D includes a portion of the lower subframe 4100C. Fig.6441 is an exploded front perspective view showing the lower sub-frame 4100C and the rear pillar sub-frame 4100D. Fig.65 A perspective view of the intermediate sub-frame 3100B and the links 3200-1, 32002 is shown with the first and second airbags 4302, 4304 of the actuator assembly 4300. The sub-frames 4100A, 4100B, 4100C, 4100D and the links 4200-1, 4200-2 will be described in more detail later.

[0180] like Fig.63 As best shown, the middle subframe 4100B is pivotally connected to the upper subframe 4100A at its front end by a threaded connector 4002 received in aligned apertures 4003, 4004 in the respective middle subframe 4100B and upper subframe 4100A. The threaded connector 4002 and apertures 4003, 4004 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the aperture 4003 in the middle subframe 4100B may be a square aperture that receives a square shank portion of the threaded connector 4002. The aperture 4004 in the upper subframe 4100A may be sized to receive a socket bushing 4010 that is retained by a nut 4011 received on the threaded end of the threaded connector 4002. The middle subframes 4100B are pivotally connected at their rear ends by threaded connectors 4006 received in apertures 4007, 4008 in the respective middle subframes 4100B and in the lower subframe 4100C. The threaded connectors 4006 and apertures 4007, 4008 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the apertures 4007 in the middle subframes 4100B may be square apertures that receive the square shank portion of the threaded connector 4006. The apertures 4008 in the lower subframe 4100C may be sized to receive a socket bushing 4010 that is retained by a nut 4011 received on the threaded end of the threaded connector 4006.

[0181] The first and second links 4200-1, 4200-2 are pivotally connected to the upper subframe 4100A at their front ends by threaded connectors 4012 received in aligned apertures 4013, 4014 in the respective first and second links 4200-1, 4200-2 and upper subframe 4100A. The threaded connectors 4012 and apertures 4013, 4014 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the apertures 4013 in the links 4200-1, 4200-2 may be square apertures that receive the square shank portions of the threaded connectors 4012. The apertures 4014 in the upper subframe 4100A may be sized to receive the socket bushings 4010, which are retained by the nuts 4011 received on the threaded ends of the threaded connectors 4012. The first and second links 4200-1, 4200-2 are pivotally connected to the lower subframe 4100C at their rear ends by threaded connectors 4016 received in aligned apertures 4017, 4018 in the respective first and second links 4200-1, 4200-2 and the lower subframe 4100C. The threaded connectors 4016 and apertures 4017, 4018 may be threadedly connected as shown in the previous embodiments 1000, 2000. Alternatively, as shown, the apertures 4017 in the links 4200-1, 4200-2 may be square apertures that receive the square shank portions of the threaded connectors 4016. The apertures 4018 in the lower subframe 4100C may be sized to receive the sleeve bushings 4010, which are retained by the nuts 4011 received on the threaded ends of the threaded connectors 4016.

[0182] The rear pillar subframe 4100D is connected to the lower subframe 4100C by aligning holes 4025, 4026 in the corresponding rear pillar subframe 4100D and the lower subframe 4100C (see Fig.63 ) is pivotally connected to the lower subframe 4100C. Fig.62 and Fig.644000A, the entire rear pillar subframe 4100D may be omitted, as the primary purpose of the rear pillar subframe 4100D is to support the guide wheels 4050, which are not present in the 4000A embodiment. However, as explained in detail later, the rear post subframe 4100D cooperates with the lower subframe 4100C to enable depth selection via the depth selector 4400. Thus, if depth selection is desired, embodiments of the row cleaner assembly 4000A may be used with the rear post subframe 4100D, thereby omitting only the guide wheel 4050 and guide wheel shaft bolt 4051.

[0183] Fig.66 A front perspective view of the upper subframe 4100A is shown. In this embodiment, the upper subframe 4100A is shown as a unitary cast component, but it may be made of individual parts connected by tabs and slots, as described in conjunction with the above embodiments 1000, 2000, 3000, or the individual parts may be joined by welding or by bolted connections. The upper subframe 4100A includes a first gusset plate 4102-1 and a second gusset plate 4102-2 that extend downwardly from the top plate or top surface 4101 and are laterally spaced apart by a front plate or surface 4104. The gusset plates 4102-1, 4102-2 include apertures 4004, 4014 for receiving threaded connectors 4002, 4012, respectively, for attaching the intermediate subframe 4100B and rails 4200-1, 4200-2, respectively, as described above with reference to Fig.63 as described.

[0184] Fig.63 and Fig.681 and 2. The middle subframe 4100B is shown in a rear perspective view and a front perspective view, respectively. Again, in this embodiment, the middle subframe 4100B is shown as a one-piece cast member, but it can be made of individual parts connected by tabs and slots, as described in conjunction with the above embodiments 1000, 2000, 3000, or the individual parts can be connected by welding or by bolted connectors. The middle subframe 4100B includes a front base member 4120 and a rear base member 4122 and a first side rail 4121-1 and a second side rail 4121-2. The front base member 4120 includes an orifice 4125 through which the connector of the first airbag 4302 extends and receives the accessory 4126 ( Fig.62 ), the fitting 4126 threadably secures the second airbag 4304 to the front base member 4120. The rear base member 4122 includes an aperture 4127 through which the connector of the first airbag 4302 extends and receives a fitting 4128 ( Fig.65 ), the fitting 4128 threadably secures the first airbag 4302 to the rear base member 4122. Each of the side rails 4121-1, 4122-2 includes a front aperture 4003 for receiving a threaded connector 4002 for pivotally securing the side rails 4121-1, 4121-2 of the intermediate subframe 4100B to the gussets 4102-1, 4102-2 of the upper subframe 4100A, as described above with reference to Fig.63 Each of the side rails 4121-1, 4122-2 includes a rear aperture 4007 for receiving a threaded connector 4006, as described above with reference to Fig.63 As described.

[0185] Fig.63 and Fig.67The rear perspective view and the front perspective view of the first connecting rod 4200-1 and the second connecting rod 4200-2 are shown respectively. Again, in this embodiment, the first connecting rod 4200-1 and the second connecting rod 4200-2 are shown as being connected as a monolithic member, for example, by casting, but the connecting rod can be made of various parts connected by lugs and slots, as described in conjunction with the above embodiment 3000, or various parts can be connected by welding or by bolted connectors. The first connecting rod 4200-1 and the second connecting rod 4200-2 can be connected by a front plate 4202. The front plate can include an orifice 4203 for receiving a threaded connector (not shown), for attaching the front end and the rear end of the first airbag 4302 and the second airbag 4304 to the front plate respectively. One or more lateral members 4204 can be connected between the first connecting rod 4200-1 and the second connecting rod 4200-2 to provide structural rigidity. Each of the links 4200-1, 4200-2 includes a front aperture 4013 for receiving a threaded connector 4012 for pivotally securing the links 4200-1, 4200-2 to the gussets 4102-1, 4102-2 of the upper subframe 4100A, as described above with reference to Fig.63 Each of the connecting rods 4200-1, 4200-2 includes a rear aperture 4017 for receiving a threaded connector 4016, as described above with reference to Fig.63 As described.

[0186] Fig.69 A front perspective view of the lower subframe 4100C is shown. Again, in this embodiment, the lower subframe 4100C is shown as an integral cast member, but it can be made of individual parts connected by lugs and slots, as described in conjunction with the above embodiments 1000, 2000, 3000, or the individual parts can be connected by welding or by bolted connectors. The lower subframe 4100C includes a first row cleaner wheel support arm 4130-1 and a second row cleaner wheel support arm 4130-2, which are connected at their front ends. The rear lateral member 4134 can extend between the rear ends of the support arms 4120-1, 4120-2 to provide structural rigidity. The curved panel 4138 extends across the row cleaner wheel support arms 4130-1, 4130-2 toward their front ends. The curved panel 4138 includes an opening 4402 with a notch, which will be discussed in more detail later in conjunction with the description of the depth adjuster 4400. Each of the rower wheel support arms 4130-1, 4130-2 also includes an opening 4026 that aligns with an aperture 4025 in the rear support subframe 4100D for receiving a pin 4024 for pivotally attaching the lower subframe 4100C to the rear support subframe 4100D (see Fig.64Each row cleaner wheel support arm 4130-1, 4130-2 also includes an aperture 4008, 4018 for receiving a corresponding threaded connector 4006, 4016 for connecting the corresponding intermediate sub-frame 4100B and the connecting rod 4200-1, 4200-2, as described above with reference to Fig.63 Each of the first row cleaner wheel support arm 4130-1 and the second row cleaner wheel support arm 4130-2 also includes an aperture 4135 for receiving a row cleaner wheel axle bolt 4061-1, 4061-2. A plurality of apertures 4135 spaced along the row cleaner wheel support arms 4130-1, 4130-2 may be provided to allow the row cleaner wheel to be positioned forwardly or rearwardly as desired depending on the size or configuration of the row cleaner wheel. In one embodiment, as Fig.62 As best shown, an oversized rectangular opening 4155 can be formed or fabricated in the row cleaner wheel support arms 4130-1, 4130-2 to receive a rectangular bevel washer 4156 having an aperture 4135 therein to receive the row cleaner wheel axle bolt 4060-1, 4060-2. The bevel washer 4156 can have different bevel pitches that can be oriented within the rectangular opening to provide different tilt angles (e.g., pitch, roll, or yaw) for the row cleaner wheel depending on field conditions.

[0187] Fig.70 is a rear perspective view of the rear pillar subframe 4100D. Again, in this embodiment, the rear pillar subframe 4100D is shown as a unitary cast member, but it can be made of individual parts connected by tabs and slots, as described in conjunction with the above embodiments 1000, 2000, 3000, or the individual parts can be connected by welding or by bolted connections. The rear pillar subframe 4100D includes a first pillar 4140-1 and a second pillar 4140-2. A lateral member 4142 can extend between the pillars 4140-1, 4140-2. Each of the pillars 4140-1, 4140-2 includes an aperture 4022 for receiving an axle wheel bolt 4051, as described above with reference to Fig.63 In this embodiment, each of the struts 4140-1, 4140-2 includes a forwardly extending arm 4141-1, 4141-2 connected at its front end by longitudinally spaced first and cross members 4152, 4154. The first cross member 4152 includes a first aperture 4153, and the second cross member 4154 includes a second aperture 4155 longitudinally aligned with the first aperture 4153. The apertures 4153 and 4155 are configured to receive a depth selector 4400 discussed later.

[0188] The rear pillar subframe 4100D may include a scraper 4145 to remove dirt or debris that may accumulate on the guide wheel 4050 during operation. The scraper 4145 may be attached to the side members 4142 between the pillars 4140-1, 4140-2 and may include a plate with an arcuate edge 4146 that approximates the contour of the guide wheel 4050 (see Fig.58 ). The scraper 4145 can be attached to the side member 4142 by means of bolts 4148 extending through apertures 4149 in the side member 4142 and through elongated holes in the scraper 4147 and secured by nuts 4150. The elongated holes 4147 allow the scraper 4145 to be adjustably positioned relative to the side plate 4142 to vary the distance from the guide wheel 4050 to accommodate different guide wheel sizes and profiles and to account for wear of the guide wheel tread and the scraper 4145.

[0189] Reference Fig.6400D, the depth selector 4400 enables the angle or position of the lower subframe 4100C to be selectively adjusted relative to the rear pillar subframe 4100D. The depth selector 4400 includes a handle 4404 attached to a base 4406. A shaft 4408 extends downwardly from the base 4406. The base 4406 also includes a downwardly extending laterally spaced pin 4410 that seats within a notch of a notched opening 4402 in the curved panel 4138 of the lower subframe 4100C. The shaft 4408 extends through the notched opening 4402 and through a first aperture 4153 in the first and second cross members 4152 and seats in a second aperture 4155 in the second cross member 4154 of the rear pillar subframe 4100D. A spring (not shown) is retained on the shaft 4408 between the first cross member 4152 and the second cross member 4154 of the rear pillar subframe 4100D. To adjust the angle or position of the lower subframe 3100C relative to the rear post subframe 4100D (thereby increasing or decreasing the depth of penetration into the soil by the row cleaner wheels 4060-1, 4060-2), the operator grasps the handle 4404 and applies an upward force to cause the spring to compress, disengaging the pin 4410 from the notch 4402 of the notched opening 4402. With the pin 4410 disengaged from the notch, the operator can pivot the lower subframe 4100C relative to the rear post subframe 4100D about the axis of the pin 4024, thereby pivotally coupling the lower subframe 4100C to the rear post subframe 4100D. Once the lower subframe 4100C is at the desired angle or position, the operator releases the upward pressure on the handle 4404 and the spring bias re-seats the pin 4410 within the recess of the recessed opening 4402, thereby securely retaining the lower subframe 4100C at the desired angle or position relative to the rear support subframe 4100D corresponding to the desired cleaner wheel depth.

[0190] Reference Fig.62, the first and second row cleaner wheels 4060-1, 4060-2 are fixed to the first and second row cleaner wheel support arms 4030-1, 4030-2 of the lower subframe 4100C with row cleaner wheel axle bolts 4061-2, 4061-2, respectively. Each row cleaner wheel axle bolt 4061-1, 4061-2 extends through a central opening 4064 in each of the corresponding first and second cleaner wheels 4060-1, 4060-2. A bushing 4065 is received on the end of each row cleaner wheel axle bolt 4061-1, 4061-2, and the bushing is received in a hub 4070 having a central opening 4071. The hub 4070 is secured to the respective first and second row cleaner wheels 4060-1, 4060-2 by a nut 4072 which is threadably received on a threaded connector 4074 which extends through an orifice 4066 in the row cleaner wheels 4060-1, 4060-2 and through an alignment hole 4073 in the hub 4070. The nuts 4075 on the rear side of the row cleaner wheel support arms 4030-1, 4030-2 receive the ends of the wheel axle bolts 4061-1, 4061-2, thereby axially constraining the row cleaner wheels 4060-1, 4060-2 to the respective row cleaner wheel axle bolts 4061-1, 4061-2, while the bushings 4065 allow the row cleaner wheels 4060-1, 4060-2 to rotate freely about the respective row cleaner wheel axle bolts 4061-1, 4061-2. Spacers 4063 and washers may be provided on the row cleaner axle bolts 4061-1, 4061-2 to position the row cleaner wheels 4060-1, 4060-2 outwardly away from the row cleaner wheel support arms 4130-1, 4130-2. Fig.62 Also shown is a scraper 4076 which may be provided on the row cleaner shaft bolts 4061-1, 4061-2 to scrape dirt or mud from the row cleaner wheels 4060-1, 4060-2 as they rotate.

[0191] Reference Fig.54 and Fig.61 , the guide wheel shaft bolt 4051 extends through the aperture 4022 in the rear pillar subframe 4100D and through the hub of the guide wheel 4050. Spacer bushing 4053 ( Fig.61 ) can be set on each side of the wheel hub on the guide wheel shaft bolt 4051 to keep the guide wheel 4050 centered between the pillars 4040-1, 4040-2. Nuts 4054 are threaded onto the ends of the guide wheel shaft bolt 4051 to secure the guide wheel 4050 to the rear pillar subframe 4100D.

[0192] Reference Fig.63 and Fig.65, the actuator system 4300 may include a first airbag 4302 and a second airbag 4304, which are arranged in the middle subframe 4100B and cooperate with the connecting rods 4200-1, 4200-2. The first airbag 4302 is connected to the rear plate 4122 of the middle subframe 4100B at its rear end behind the second airbag 4304, and is connected to the side member 4202 between the first connecting rod 4200-1 and the second connecting rod 4200-2 at its front end. The second airbag 4304 is connected to the same side member 4202 at its rear end, and is connected to the front plate 4120 ( Fig.68 ). The operation of the actuator system 4300 with respect to applying downward and upward forces to the guide wheel 4050 and the row cleaner wheels 4060-1, 4060-2 operates in substantially the same manner as explained above in conjunction with the embodiment of the row cleaner assembly 3000, which is described above with reference to Figures 52A and 52B, and therefore will not be repeated here.

[0193] The first actuator 4302 and the second actuator 4304 can be any type of single-acting or double-acting actuator that can be configured to provide an adjustable downforce and optional lift force, including pneumatic cylinders, hydraulic cylinders, airbags, and electromechanical actuators, rather than airbags for the actuator system 4300. In still other embodiments, a single-acting actuator can be utilized, such as an airbag and front spring assembly, similar to the spring assembly 2300 described above with respect to the second row cleaner assembly embodiment 2000. The downforce applied by the actuator system 4300 on the guide wheel 4050 and the row cleaner wheels 4060-1, 4060-2 can be controlled by a controller (e.g., "controller 300" referenced in U.S. Pat. No. 8,550,020) or by a fluid control port (e.g., "fluid control port 10" described in PCT Publication No. WO2300 / 056395). The actuator system 4300 of each row cleaner assembly 4000 of the planter 10 can be controlled row by row, or by portions of the planter 10 as a group, or collectively across the entire planter 10.

[0194] The amount of downward force desired can be a function of soil conditions and the amount or type of crop residue and the depth at which the row cleaner wheel 4060 is set to engage the soil. For example, in dry soil conditions, a greater downward force may be desired so that the guide wheel 4050 will pack the soil 40 more firmly in front of the opening assembly 234 to form a better seed groove 38 and prevent or minimize soil from falling into the seed groove 38 before the seed is deposited. Alternatively, in wet soil conditions, a smaller downward force may be desired. A downward force monitoring system (discussed later) may be used to determine and adjust the downward force applied by the actuator system 4300.

[0195] Alternative mounting arrangements

[0196] Fig.71 An alternative mounting arrangement is shown that may be used with any of the above described embodiments of the row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A. Figure 2 , Figure 2A , Fig.18 , Fig.18A , Fig.34 , Fig.34A , Fig.53 , Fig.53A As shown, the ridge cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A is mounted to the tool bar 14. The ridge cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000 or 4000A can be mounted to the ridge unit frame handle 254, or with a ridge cleaner assembly such as Fig.71 The mounting bracket 220 is shown mounted to other structural members of the ridge unit frame 210. Although Fig.71 An embodiment using row cleaner assembly 1000 is shown, but as will be appreciated by one skilled in the art, the same or similar mounting structures will apply to all of the embodiments of row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A. Therefore, rather than including separate figures for each row cleaner assembly embodiment to which the alternative mounting arrangements may apply, the following figures are provided. Fig.71 Reference numerals corresponding to each of the row cleaner assemblies 1000 , 1000A, 2000 , 2000A, 3000 , 3000A, 4000 , 4000A are included to indicate that each of those embodiments may be mounted using the mounting bracket 220 .

[0197] Fig.72Another alternative embodiment is shown that can be used with any of the above-described embodiments of the row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A. In this arrangement, the row cleaner assembly is generally designated by the reference numeral 5000 and is shown as being similar to the row cleaner assembly 2000 in that the row cleaner assembly utilizes the same rear support subframe 2100D, lower subframe 2100C, guide wheel 2050, and row cleaner wheels 2060-1, 2060-2 as the row cleaner embodiment 2000. However, in this embodiment, the upper subframe 2100A, middle subframe 2100B, links 2200-1, 2200-2 are removed and replaced with parallel arm links 5002. The parallel arm link 5002 is pivotally connected at its rear end to the ridge unit support 5004, which is attached to the ridge unit frame 210. The front end of the parallel arm link 5002 is pivotally attached to the rear support subframe 2100D and the lower subframe 2100C at the same point where the intermediate subframe 2100B and the links 2200-1, 2200-2 are pivotally connected in the embodiment 2000. The actuator system 2300 is removed and replaced with an actuator system 5300, which is connected between the support member 5006 and the parallel arm link 5002 to provide the desired downforce and optional lift to the guide wheel 2050 and the cleaner wheels 2060-1, 2060-2. The actuator system 5300 can utilize any actuator that provides adjustable downforce and optional upforce, including pneumatic cylinders, hydraulic cylinders, air bags, and electromechanical actuators. The downforce and optional upforce applied by the actuator system 5300 can be controlled by a controller (e.g., "controller 300" referenced in U.S. Patent No. 8,550,020) or by a fluid control port (e.g., "fluid control port 10" described in PCT Publication No. WO2020 / 056395). The actuators comprising the actuator system 5300 can all be controlled row by row, or by portions of the planter 10 as a group, or collectively across the entire planter 10.

[0198] Although not separately illustrated, the same or substantially similar modifications may be used with each of the ridge unit assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A. Rather than including separate figures for each ridge cleaner assembly embodiment that may utilize the alternative embodiment 5000, Fig.72Reference numerals corresponding to each of the row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A are included to indicate that each of those embodiments may be adapted to utilize an embodiment of the present invention. Fig.72 5000. For example, when utilizing ridge unit assembly 1000 or 1000A, upper subframe 1100A, middle subframe 1100B, linkages 1200-1 and 1200-2 may be removed and replaced with parallel arm linkages 5002, and actuator system 1300 may be removed and replaced with actuator system 5300 as described in the above paragraphs. Similarly, when utilizing ridge unit assembly 3000, middle subframe 3100B, linkages 3200-1, 3200-2 may be removed and replaced with parallel arm linkages 5002 mounted to lower subframe 3100C, and actuator system 3300 may be replaced with actuator system 5300 as described in the above paragraphs. Similarly, when utilizing ridge unit assembly 3000A (i.e., without guide wheels 3050), upper subframe 3100A, middle subframe 3100B, links 3200-1, 3200-2 (and optional rear support subframe 3100D) can be removed and replaced with parallel arm links 5002 mounted to lower subframe 3100C, and actuator system 3300 can be replaced with actuator system 5300 as described in the above paragraph. Likewise, when utilizing ridge unit assembly 4000, upper subframe 4100A, middle subframe 4100B, and links 4200-1, 4200-2 can be removed and replaced with parallel arm links 5002 mounted to lower subframe 4100C, and actuator system 4300 can be replaced with actuator system 5300 as described above. Similarly, when utilizing the ridge unit assembly 4000A (i.e., without the guide wheels 4050), the upper subframe 4100A, the middle subframe 4100B, the links 4200-1, 4200-2 (and the optional rear support subframe 4100D) can be removed and replaced with a parallel arm link 5002 mounted to the lower subframe 4100C, and the actuator system 4300 can be replaced with the actuator system 5300.

[0199] Third ridge cleaner wheel assembly

[0200] Figures 73 to 80 Yet another embodiment of a row cleaner assembly 6000 is shown that includes an embodiment of a third row cleaner wheel assembly 6010. Figure 73 to Figure 79The row cleaner assembly 6000 is shown utilizing an embodiment of the row cleaner assembly 4000, but it should be understood that any of the other embodiments of the row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000A, 5000 as previously described may be configured to include a third row cleaner wheel assembly 6010. Therefore, rather than including separate sets of figures for each row cleaner assembly embodiment, Figures 73 to 80 Included are reference numerals corresponding to each of the row cleaner assembly frames 1100 , 2100 , 3100 , 4100 , and their respective components may be adapted to include a third row cleaner wheel assembly 6010 .

[0201] Fig.73 is a rear perspective view of a row cleaner assembly 6000 including an embodiment of a third row cleaner wheel assembly 6010. Fig.74 yes Fig.73 Figures 75 and 76 are front perspective views of the row cleaner assembly 6000. Fig.73 Right side view and left side view of the row cleaner assembly 6000. Fig.77 and Fig.78 They are Fig.73 A top view and a bottom view of the row cleaner assembly 6000. Fig.79 yes Fig.73 Exploded right front perspective view of the row cleaner assembly 6000. Fig.80 yes Fig.73 An exploded left front perspective view of the row cleaner assembly 6000.

[0202] Reference Fig.79 and Fig.80, the mounting bar 6080 is configured to be mounted to the lower subframe 1100C, 2100C, 3100C, 4100C with a threaded connector 6081 extending through an aperture 6082 in the mounting bar 6080 that aligns with an aperture 1035, 2025, 3025, 4035 in the corresponding row cleaner wheel support arm 1030-2, 2030-2, 3030-2, 4030-2. A nut 6083 on the rear side of the lower subframe 1100C, 2100C, 3100C, 4100C receives the threaded connector 6081 to secure the mounting bar 6080 to the lower subframe 1100C, 2100C, 3100C, 4100C. The mounting bar 6080 includes a rear opening 6084 for mounting the second row cleaner wheel 1060-2, 2060-2, 3060-2, 4060-2 to the mounting bar 6080 via the second row cleaner shaft bolt 1061-2, 2061-2, 3061-2, 4061-2 in the same manner as previously described when mounting the second row cleaner wheel 1060-2, 2060-2, 3060-2, 4060-2 to the row cleaner wheel support arm 1030-2, 2030-2, 3030-2, 4030-2 of the corresponding lower sub-frame 1100C, 2100C, 3100C, 4100C. In an alternative embodiment, the mounting bar 6080 may include an enlarged aperture 6086 for aligning and receiving a bushing for securing the second row cleaner wheel 1060-2, 2060-2, 3060-2, 4060-2 to the row cleaner wheel support arm 1030-2, 2030-2, 3030-2, 4030-2 of the corresponding lower subframe 1100C, 2100C, 3100C, 4100C. The mounting bar 6080 includes an aperture 6086, which may be an elongated aperture through which the third row cleaner wheel axle bolt 6061 extends. The third wheel axle bolt 6061 extends through the central opening 6064 of the third row cleaner wheel 6060. A bushing 6065 is received on the end of the third row cleaner wheel axle bolt 6061 and is received within a hub 6070 having a central opening 6071. The hub 6070 is secured to the third row cleaner wheel 6060 by a nut 6072 which is threadably received on a threaded connector 6074 which extends through an aperture 6066 in the third row cleaner wheel 6060 and through an alignment hole 6073 in the hub 6070. A nut 6075 on the rear side of the mounting bar 6080 receives the end of the third row cleaner wheel axle bolt 6061, thereby axially constraining the third row cleaner wheel 6060 to the mounting bar 6080, while the bushing 6065 allows the third row cleaner wheel 6060 to freely rotate about the respective row cleaner wheel axle bolt 6061.Spacers and washers (not shown) may be provided on the row cleaner shaft bolt 6061 to position the third row cleaner wheel 6060 outwardly away from the mounting bar 6080 and the second row cleaner wheels 1060-2, 2060-2, 3060-2, 4060-2. Fig.79 Not shown, but a scraper may be provided on the third cleaner wheel axle bolt 6061 to scrape dirt or mud from the third cleaner wheel 6060 as it rotates, similar to that described above with respect to embodiments 1000, 2000, 3000, 4000.

[0203] It should also be understood that although Figures 73 to 80 The third row cleaner wheel 6060 is shown mounted on the second side adjacent to the second row cleaner wheels 1060-2, 2060-2, 3060-2, 4060-2, but the third row cleaner wheel 6060 may be mounted on the first side adjacent to the first row cleaner wheel 1060-1, 2060-1, 3060-1, 4060-1.

[0204] Row cleaner diverter assembly

[0205] Figure 81 to Figure 85 Yet another embodiment of a row cleaner assembly 7000 is shown that includes an embodiment of a row cleaner diverter assembly 7010. Figure 81 to Figure 85 The row cleaner assembly 7000 is shown utilizing an embodiment of the row cleaner assembly 4000, but it should be understood that any of the other embodiments of the row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000A, 5000 as previously described may be configured to include the row cleaner diverter assembly 7000. Therefore, rather than including separate sets of figures for each row cleaner assembly embodiment, Figure 81 to Figure 85 Reference numerals corresponding to each of the row cleaner assembly frames 1100 , 2100 , 3100 , 4100 , and their respective components may be adapted to comprise a row cleaner diverter assembly 7010 .

[0206] Fig.81 is a front right perspective view of a row cleaner assembly 7000 including an embodiment of a row cleaner diverter assembly 7010. Fig.82 and Fig.83 With Fig.81 A top plan view and a bottom plan view of a row cleaner assembly 7000 of a row cleaner diverter assembly. Fig.84 Yes Fig.81 The same view of the row cleaner assembly 7000 is shown, but with the row cleaner wheels removed to better illustrate an embodiment of the row cleaner diverter assembly 7010. Fig.85 is with Fig.84The same view but showing the row cleaner diverter assembly 7010 exploded. Fig.86 yes Fig.81 A rear perspective view of a row cleaner diverter assembly.

[0207] Reference Figure 84 to Figure 86 , the row cleaner diverter assembly 7010 includes a vertically oriented diverter plate 7012, which is supported at the front end of the lower subframe 1100C, 2100C, 3100C, 4100C of the row cleaner frame assembly 1100, 2100, 3100C, 4100C of any of the row cleaner embodiments 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000 , so that the diverter plate 7012 is arranged between the row cleaner wheels 1060-1, 1060-2; 2060-1, 2060-2; 3060-1, 3060-2; 4060-1, 4060-2 and extends forward from the row cleaner wheels 1060-1, 1060-2; 2060-1, 2060-2; 3060-1, 3060-2; 4060-1, 4060-2 in the direction of travel as shown. It has been found that under some conditions, the row cleaner wheels 1060-1, 1060-2; 2060-1, 2060-2; 3060-1, 3060-2; 4060-1, 4060-2 can pull crop residue in both directions while leaving some residue in the row or seedbed, which can cause some crop residue to be trapped in the seed groove 38 formed by the tail opening assembly 234. Therefore, by positioning the forward extending diverter plate 7012 between the row cleaner wheels, the diverter plate 7012 lifts and disperses the crop residue in front of the row cleaner wheels, pressurizing the crop residue to one or both sides, so that the row cleaner wheels can move the crop residue from the row or seedbed more efficiently, so that any crop residue will be less likely to be trapped in the seed groove 38.

[0208] The front edge 7014 of the diverter plate 7012 can be angled to form a sharp blade. In other embodiments, the front edge 7014 can have a flat, rounded or blunt edge. In some embodiments, the diverter plate 7012 can have a profile so that the upper portion of the front edge 7014a is convex in the direction of motion 11 and the lower portion 7014b is concave in the direction of motion 11.

[0209] In one embodiment, the diverter plate 7012 is sandwiched between two side plates 7016-1, 7016-2. Fig.85As best shown, the diverter plate 7012 includes a vertically oriented elongated slot 7018 that aligns with an aperture 7020 in the side plates 7016-1, 7016-2. A threaded connector 7022 extends through the aperture 7020 and the elongated slot 7018 and is secured by a nut 7024. The elongated slot 7018 allows the diverter plate 7012 to be vertically adjustable relative to the side plates 7016-1, 7016-2 so that the diverter plate 7012 can be positioned to contact the soil surface or penetrate into the soil surface at a desired depth, which can be less than the seed depth or greater than the seed depth.

[0210] like Fig.84 and Fig.85 As best shown, the row cleaner diverter assembly 7010 may include an adapter assembly 7030 configured to mount with a forward extending row cleaner wheel support arm 1030-1, 1030-2; 2030-1, 2030-2; 3030-1, 3030-2; 4030-1, 4030-2 including a lower subframe 1100C, 2100C, 3100C, 4100C. Fig.85 and Fig.86 As best shown, the adapter assembly 7030 can include a vertically oriented plate 7032 attached to a base plate 7034 (e.g., by welding or other suitable connection means). Rearwardly extending arms 7036-1, 7036-2 can be attached to the base plate 7034 (e.g., by welding or other suitable connection means). The rearwardly extending arms 7036-1, 7036-2 can have apertures 7038 that are positioned to align with apertures 1135, 2135, 3135, 4135 (or other apertures) in the row cleaner wheel support arms 1030-1, 1030-2; 2030-1, 2030-2; 3030-1, 3030-2; 4030-1, 4030-2. If the apertures 7038 are positioned to align with the apertures 1135, 2135, 3135, 4135, the row cleaner shaft bolts 1061-1, 1061-2; 2061-1, 2061-2; 3061-1, 3061-2; 4061-1, 4061-2 can be received by the aligned apertures 7038 and 1135, 2135, 3135, 4135 to be used in combination with other bolts and nuts (not shown) to secure the adapter assembly 7030 to the row cleaner wheel support arms 1030-1, 1030-2; 2030-1, 2030-2; 3030-1, 3030-2; 4030-1, 4030-2. The vertical plate 7032 may include vertically spaced apertures 7040 ( Fig.85), the aperture 7040 is aligned with any one of a series of horizontally spaced upper apertures 7042 and horizontally spaced lower apertures 7042 in the side plates 7016-1, 7016-2. A threaded connector 7044 can extend through the aligned apertures 7040, 7042 and can be secured by a nut 7046 to secure the side plates 7016-1, 7016-2 to the vertical plate 7032 of the adapter assembly 7030 and thereby secure the diverter plate 7012 to the vertical plate 7032 of the adapter assembly 7030. It should be understood that a series of orifices 7042 allow the side plates 7016-1, 7016-2 to be adjustably positioned forward and rearward relative to the adapter assembly 7030 and thereby allow the row cleaner wheel support arms 1030-1, 1030-2; 2030-1, 2030-2; 3030-1, 3030-2; 4030-1, 4030-2 and row cleaner wheels 1060-1, 1060-2; 2060-1, 2060-2; 3060-1, 3060-2; 4060-1, 4060-2 to change the distance that the diverter plate 7012 protrudes forward or rearward from the row cleaner wheels 1060-1, 1060-2; 2060-1, 2060-2; 3060-1, 3060-2; 4060-1, 4060-2.

[0211] Fig.87 is a front perspective view of an alternative embodiment of a diverter assembly suitable for use with an embodiment of the lower subframe 4100C of the row cleaner assembly 4000, as shown in FIG. Fig.50 and Fig.69 4. In this embodiment, the lower subframe 4100C includes a front protrusion 7050 extending forward from the row cleaner support arms 4130-1, 4130-2. Each of the other embodiments of the row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000A, and 5000 can be manufactured with a similar front protrusion 7050. For this embodiment, the adapter assembly 7030 can be omitted and the side panels 7016-1, 7016-2 can be directly mounted to the front protrusion 7050 by a threaded connector 7044, which extends through an aperture 7042 in the side panels 7016-1, 7016-2 and through an aperture 7052 of the front protrusion 7050 and is secured by a nut 7046. The diverter plate 7012 is attached to the side plates 7016-1, 7016-2 using threaded connectors 7022 that extend through apertures 7020 in the side plates 7016-1, 7016-2 and are secured by nuts 7024, the apertures 7020 being aligned with the elongated slots 7018 in the diverter plate 7012 as in the previous embodiments.

[0212] Downforce monitoring

[0213] It would be desirable to measure the load experienced by the row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000 to determine whether more down force or less down force should be applied by the actuator system 1300, 2300, 3300, 4300, 5300. Fig.91 , each of the embodiments 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A is shown in side view with the respective first row cleaner wheel 1060-1, 2060-2, 3060-1, 4060-1 removed.

[0214] One method for measuring the load experienced by the respective row cleaner assemblies is to utilize a load sensor 8000 disposed on the lower subframe 1100C, 2100C, 3100C, 4100C. In one embodiment, the load sensor 8000 may be a load pin 8002 that replaces the guide wheel shaft bolt 1051, 2051, 3051, 4051 of the respective embodiments of the row cleaner assemblies 1000, 2000, 3000, 4000, 5000, 6000, 7000. An example of a suitable load pin 8002 is disclosed in U.S. Pat. No. 8,561,472.

[0215] In another embodiment, the load sensor 8000 may be a Wheatstone bridge 8004 disposed on one or both of the row cleaner support arms 1130-1, 1130-2; 2130-1, 2130-2; 3130-1, 3130-2; 4130-1, 4130-2 of the corresponding lower subframe 1100C, 2100C, 3100C, 4100C.

[0216] In yet another embodiment, the load sensor 8000 may include a load sensor 8010 that is substantially the same as the handle assembly described in PCT Publication No. WO2019169369 and designated by the reference numeral in the PCT (ie, "1600"). Fig.93 , the load cell 8010 is an assembly including a sleeve 8012 having a handle bracket 8014 at an upper end for pivotally connecting a handle 8016 with a pivot pin 8018. Fig.93Depending on the configuration, the side plate 8020 extends between the connecting rods 1200-1, 1200-2; 2200-1, 2200-2; 3200-1, 3200-2; 4200-1, 4200-2 or between the side rails 1121-1, 1121-2; 2121-1, 2121-2; 3121-1, 3121-2; 4121-1, 4121-2 of the intermediate subframe 1100B, 2100B, 3100B, 4100B. In some embodiments, the side plate 8020 can be a base member 1120, 2120, 3120, 4120 of the intermediate subframe 1100B, 2100B, 3100B, 4100B. The side plate 8020 includes a hole 8021 through which the sleeve 8012 extends. Above the side plate 8020 is disposed a contact plate 8022 having a convex lower surface 8023 and a central bore 8024 therethrough such that the convex lower surface 8023 contacts the side plate 8020. Above the contact plate 8022 is disposed a load sensing member 8030, such as a "pancake" load sensor (FIGS. 95-96), having a hole 8032 therethrough. The load sensing member 8030 includes a plurality of feet 8033 (FIG. 96) positioned to allow the load sensing member 8030 to flex and measure force. The flexure of the load sensing member 8030 generates a load signal that is communicated to the monitor 50 or control module (discussed later).

[0217] 94, the sleeve 8012 has a first diameter 8034 and a larger second diameter 8035, with a shoulder 8036 therebetween. The first diameter 8034 and the second diameter 8035 pass through the hole 8032 in the load sensing member 8030. The first diameter 8034 is sized to pass through the center bore 8024 of the contact plate 8022, but the second diameter 8035 and the shoulder 8036 are sized so that they cannot pass through the center bore 8024 of the contact plate 8022.

[0218] Refer again Fig.92 and Fig.93, bevel washers 8040 and 8042 are disposed on the sleeve 8012 below the handle bracket 8014 and above the load sensing member 8030. The bevel washers 8040, 8042 are disposed so that the concave surfaces of the bevel washers 8040, 8042 face each other, allowing the bevel washers 8040, 8042 to be elastically compressed or flattened to absorb the impact experienced by the row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000, thereby preventing overloading of the load sensing member 8030. Before the bevel washers 8040, 8042 are sufficiently compressed due to the load, the shoulder 8036 of the sleeve 8012 will contact the upper surface of the contact plate 8022 to limit the vertical travel of the sleeve 8012. A washer 8045 may be disposed below the side plate 8020. A shaft 8046 is received within a bore 8047 (FIG. 94) at the lower end of the sleeve 8012. A shaft bracket 8048 is mounted to the lower end of the shaft 8046. The axle support 8048 includes an aperture 8049 for receiving a row cleaner wheel axle bolt 1061-1, 1061-2; 2061-1, 2061-2; 3061-1, 3061-2; 4061-1, 4061-2 or a rod 8050 extending between the row cleaner wheel support arms 1130-1, 1130-2; 2130-1, 2130-2; 3130-1, 3130-2; 4130-1, 4130-2 near the axis of the row cleaner wheel axle bolt 1061-1, 1061-2; 2061-1, 2061-2; 3061-1, 3061-2; 4061-1, 4061-2.

[0219] It should be understood that although Figures 88 to 92The various types of load sensors 8000, 8002, 8004, 8010 are all shown on one row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A for illustration purposes only to illustrate the placement of the load sensors 8000, 8002, 8004, 8010 since only one type of load measuring device will be required for each row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000. The load sensors 8000, 8002, 8004, 8010 may be in signal communication with the monitor 50 to maintain a desired downforce. Load sensors 8000, 8002, 8004, 8010 may communicate directly with a monitor, or via a control module, or load sensors 8000, 8002, 8004, 8010 may function as part of a closed-loop system or an open-loop system with actuator systems 1300, 2300, 3300, 4300, 5300 to maintain a desired downforce, such as disclosed in International Publication No. WO2014018716. In an arrangement utilizing a control module such as disclosed in U.S. Pat. No. 9,173,339, the control module may be an on-row module that controls the downforce of a single row cleaner assembly 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000, or the control module may be configured to control the downforce of multiple row cleaner assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000 across the planter 10. In either case, the signals from the load sensors 8000, 8002, 8004, 8010 are communicated to and processed by the control module. In yet another embodiment, the controller may be a single row or multi-row control module as described in PCT Publication No. WO2014018717, wherein the load sensors 8000, 8002, 8004, 8010 are connected to a CAN network having a CAN processor. In such an embodiment, the CAN processor may communicate signals from the load sensors 8000, 8002, 8004, 8010 via the CAN network, and the CAN processor may communicate control signals via the CAN network to control the downforce of one or more row clearer assemblies 1000, 1000A, 2000, 2000A, 3000, 3000A, 4000, 4000A, 5000, 6000, 7000.

[0220] The following are non-limiting examples.

[0221] Example 1: An agricultural ridge cleaner (1000), comprising: a component bracket (1010) adapted to be connected to an agricultural tool bar (14), the component bracket (1010) comprising a top plate (1011), a first side plate (1015-1) extending downward from the top plate (1011), a second side plate (1015-2) extending downward from the top plate (1011), and a front plate (1012); a first rear bracket (1040-1); a second rear bracket (1040-2); a first side bracket (1035-1) and a second side bracket (1035-2), which connect the component bracket (1010) to the first rear bracket (1040-1) and the second rear bracket (1040-2); a frame (1035), which connects the component bracket (1010) to the first rear bracket (1040-1) and the second rear bracket (1040-2), the frame (1035) having a first frame end (1031) and a second frame end (1032) and a column (1033), the first frame end (1031) is along the movement direction (1) The column (1033) is arranged in front of the second frame end (1032), and the column (1033) is arranged on the second frame end (1032); a guide wheel (1050), the guide wheel (1050) is arranged between the first rear bracket (1040-1) and the second rear bracket (1040-2), and an axis (1051) is arranged between the first rear bracket (1040-1) and the second rear bracket (1040-2) through the guide wheel (1050); a ridge cleaner wheel frame (1080) connected to the first rear bracket The component support (1040-1) and the second rear support (1040-2) are arranged in front of the first rear support (1040-1) and the second rear support (1040-2) along the travel direction (1); at least one ridge cleaner wheel (1061) is arranged on the ridge cleaner wheel frame (1080); and an actuator (1020) is connected to the component support (1010) at a first actuator end (1021) and connected to the column (1033) at the second actuator end (1022).

[0222] Example 2, the agricultural ridger (1000) described in Example 1, wherein the frame (1035), the first side bracket (1035-1) and the second side bracket (1035-2) form a four-bar pivot connection between the component bracket (1010) and the first rear bracket (1040-1) and the second rear bracket (1040-2).

[0223] Example 3, the agricultural row cleaner (1000) described in Example 1 or Example 2, wherein the frame (1035) has an opening (1034).

[0224] Example 4, an agricultural row clearer (1000) as described in any previous example, wherein the frame (1035) has a first segment (1036), a second segment (1037), a third segment (1038) and a fourth segment (1039), the first segment (1036) being angled relative to the second segment (1037), the second segment (1037) being angled relative to the third segment (1038), and the third segment (1038) being angled relative to the fourth segment (1039).

[0225] Example 5, an agricultural row cleaner as described in any previous example, wherein the row cleaner wheel frame (1080) has a first arm (1081-1), a second arm (1081-2) and a connector (1082) connecting the first arm (1081-1) and the second arm (1081-2).

[0226] Example 6. The agricultural row cleaner (1000) of Example 5, wherein the first arm (1081-1), the second arm (1081-2), and the connector (1082) are integral components.

[0227] Example 7, an agricultural row cleaner (1000) as described in Example 5 or Example 6, wherein the first arm (1081-1) has a first slot (1083-1), the second arm (1081-2) has a second slot (1083-2), and the first slot (1083-1) and the second slot (1083-2) allow the row cleaner wheel frame (1080) to pivot to adjust the penetration depth of the at least one row cleaner wheel (1061).

[0228] Example 8, the agricultural row cleaner (1000) described in any previous example, wherein two row cleaner wheels (1061-1, 1061-2) are provided on the row cleaner wheel frame (1080).

[0229] Example 9. The agricultural row cleaner (1000) described in Example 8, wherein the two row cleaner wheels (1060-1, 1060-2) have sharp teeth (1061-1, 1061-2), and the two row cleaner wheels (1061-1, 1061-2) are arranged on the row cleaner wheel frame (1080) so that the sharp teeth (1061-1, 1061-2) of each row cleaner wheel (1061) are staggered with the sharp teeth (1061-2, 1061-1) of each other.

[0230] Example 10, the agricultural row cleaner (1000) of any preceding example, wherein the first actuator end (1021) is connected to the front plate (1012).

[0231] Example 11, an agricultural row cleaner as described in Example 10, wherein the first actuator end is connected to the front plate via a first arm and a second arm.

[0232] Example 12, the agricultural row cleaner of any preceding example, wherein the top plate, the first side plate, the second side plate, and the front plate are unitary components.

[0233] Example 13, the agricultural row cleaner (1000) described in any of the previous examples further comprising a bracket (1001) to attach the component bracket (1010) to the agricultural tool bar (14).

[0234] Example 14, the agricultural row cleaner (1000) described in any previous example also includes a scraper (1045), which is arranged on the guide wheel (1050) between the first rear support (1040-1) and the second rear support (1040-2).

[0235] Example 15, the agricultural row cleaner (1000) of any preceding example, wherein the shaft (1051) includes a load pin (1070).

[0236] Example 16, the agricultural row cleaner (1000) described in any previous example further includes a load sensor (1075) disposed on the row cleaner wheel frame (1080).

[0237] Example 101, an agricultural ridge cleaner 2000, comprising: a component bracket 2010 suitable for connecting to an agricultural tool bar 14, the component bracket 2010 comprising a top plate 2011, a first side plate 2015-1 extending downward from the top plate 2011, a second side plate 2015-2 extending downward from the top plate 2011, a connector plate 2012 connecting the first side plate 2015-1 and the second side plate 2015-2, and a base plate 2013 connecting the first side plate 2015-1 and the second side plate 2015-2; a first rear bracket 2040-1; a second rear bracket 2040-2; a first side bracket 2035-1 and a second side bracket 2035-2, which connect the component bracket 2010 to the first rear bracket 2040-1 and the second rear bracket 2040-2; a frame 2030, the frame 2030 connects the component bracket 2010 to the first rear bracket 2040-1 and the second rear bracket 2040-2, the frame 2030 has a first frame end 2031 and a second frame end 2032, a first side 2036-1, a second side 2036-2, a frame plate 2034 and an axis 2014, the first frame end 2031 is arranged in front of the second frame end 2032 along the travel direction 1, the frame plate 2034 connects the first side 2036-1 and the second side 2036-2, and the shaft 2014 connects the first side 2036-1 and the second side 2036-2; a guide wheel 2050 is arranged between the first rear bracket 2040-1 and the second rear bracket 2040-2, and an shaft 2051 is arranged between the first rear bracket 2040-1 and the second rear bracket 2040-2 through the guide wheel 2050; a ridge cleaner wheel frame 2080, which is connected to the first A rear support 2040-1 and the second rear support 2040-2 and are arranged in front of the first rear support 2040-1 and the second rear support 2040-2 along the travel direction 1; at least one ridge cleaner wheel 2060, which is arranged on the ridge cleaner wheel frame 2080; a first actuator 2020, which is connected to the connector plate 2012 at the first actuator end 2021 and connected to the frame plate 2034 at the second actuator end 2022; a second actuator 2025, which is arranged above the base plate 2013 and is operably connected to the shaft 2014.

[0238] Example 102, the agricultural ridger 2000 of Example 1, wherein the frame 2030, the first side bracket 2035-1 and the second side bracket 2035-2 form a four-bar pivot connection between the component bracket 2010 and the first rear bracket 2040-1 and the second rear bracket 2040-2.

[0239] Example 103, an agricultural row cleaner 2000 as described in any of Examples 101 to 102, wherein the first actuator 2020 is a single-acting actuator.

[0240] Example 104, an agricultural row cleaner 2000 as described in any of Examples 101 to 102, wherein the first actuator 2020 is a double-acting actuator.

[0241] Example 105, an agricultural ridger 2000 as described in any one of Examples 101 to 103, wherein the first actuator 2020 is one of an airbag, a pneumatic actuator, a hydraulic actuator, a spring, or an electromechanical actuator.

[0242] Example 106, the agricultural row cleaner 2000 of any one of Examples 101 to 103, wherein the first actuator 2020 is an air bag and the second actuator 2025 is at least one spring.

[0243] Example 107, an agricultural row cleaner as described in any of Examples 101 to 103, wherein the first actuator 2020 is an airbag and the second actuator 2025 is an airbag.

[0244] Example 108, an agricultural row cleaner 2000 as described in any of Examples 101 to 107, wherein the second actuator 2025 is a single-acting actuator.

[0245] Example 109, an agricultural row cleaner 2000 as described in any of Examples 101 to 105, wherein the second actuator 2025 is a double-acting actuator.

[0246] Example 110, the agricultural row cleaner 2000 described in Examples 101 to 105 or 108, wherein the second actuator 2025 is one of an air bag, a pneumatic actuator, a hydraulic actuator, a spring, or an electromechanical actuator.

[0247] Example 111, the agricultural row cleaner 2000 of any of Examples 101 to 106, wherein the second actuator 2025 comprises a plurality of springs.

[0248] Example 112, an agricultural ridge cleaner 2000 as described in any one of Examples 101 to Example 111, wherein the second actuator 2025 provides a lifting force to the agricultural ridge cleaner 2000 to lift the agricultural ridge cleaner 2000 so that it is not in contact with the ground.

[0249] Example 113, the agricultural ridge clearer 2000 described in any one of Examples 101 to Example 112, further includes an upper plate 2027 disposed above the second actuator 2025, the upper plate being connected to the shaft 2014, and the upper plate being pivotably engaged with the first side plate 2015-1 and the second side plate 2015-2.

[0250] Example 114, an agricultural row cleaner 2000 as described in any one of Examples 101 to Example 113, wherein the row cleaner wheel frame 2080 has a first arm 2081-1, a second arm 2081-2 and a connector 2082 connecting the first arm 2081-1 and the second arm 2082-2.

[0251] Example 115, the agricultural row cleaner 2000 described in Example 114, wherein the first arm 2081-1, the second arm 2081-2 and the connector 2082 are integral components.

[0252] Example 116, the agricultural row cleaner 2000 described in Example 114, wherein the first arm 2081-1 has a first slot (2084-1, 2086-1, 2087-1), the second arm 2081-2 has a second slot (2084-2, 2086-2, 2087-2), and the first slot and the second slot allow the row cleaner wheel frame 2080 to pivot to adjust the penetration depth of the at least one row cleaner wheel 2060.

[0253] Example 117, an agricultural row cleaner 2000 as described in any one of Examples 101 to Example 116, wherein two row cleaner wheels 2060 are provided on the row cleaner wheel frame 2080.

[0254] Example 118, the agricultural row cleaner 2000 described in Example 117, wherein the two row cleaner wheels 2060 have sharp teeth 2061, and the two row cleaner wheels 2060 are arranged on the row cleaner wheel frame 2080 so that the sharp teeth 2061 of each row cleaner wheel 2060 are staggered with the sharp teeth 2061 of each other.

[0255] Example 119, an agricultural ridger 2000 as described in any one of Examples 101 to 118, wherein the top plate 2011, the first side plate 2015-1, the second side plate 2015-2, the connecting plate 2012 and the base plate 2013 are integral components.

[0256] Example 120, the agricultural row cleaner 2000 of any one of Examples 101 to 119, further comprising a bracket 2001 to attach the component bracket 2010 to the tool bar.

[0257] Example 121, the agricultural ridge cleaner 2000 described in any one of Examples 101 to Example 120, further includes a scraper 2045, and the scraper 2045 is arranged on the guide wheel between the first rear bracket and the second rear bracket.

[0258] Example 122, the agricultural row cleaner 2000 of any of Examples 101 to 122, wherein the shaft 2051 includes a load pin 2070.

[0259] Example 123, the agricultural row cleaner 2000 described in Example 1, further comprising a load sensor 2075, wherein the load sensor 2075 is disposed on the row cleaner wheel frame 2080.

[0260] Example 301, an agricultural ridge cleaner, comprising: a frame for connecting to an agricultural tool bar or an agricultural ridge unit; a guide wheel disposed on the frame; a ridge cleaner wheel frame connected to the frame; and at least one ridge cleaner wheel disposed on the ridge cleaner wheel frame.

[0261] Example 302, the agricultural row cleaner of Example 300, wherein two row cleaner wheels are provided on the row cleaner wheel frame.

[0262] Example 303, an agricultural row cleaner as described in Example 302, wherein the guide wheel is disposed in the space between the two row cleaner wheels.

[0263] Example 304, an agricultural row cleaner as described in any of Examples 300 to Example 302, wherein the guide wheel is arranged behind the at least one row cleaner wheel in the travel direction of the row cleaner.

[0264] Example 305, an agricultural row cleaner of any one of Examples 300 to 303, wherein the row cleaner wheel frame is pivotable relative to the frame to adjust the penetration depth of the at least one row cleaner wheel in the soil.

[0265] Example 306, the agricultural row cleaner of any one of Examples 300 to 304, further comprising a first actuator disposed on the frame for adjusting a force applied to the soil by the at least one row cleaner wheel.

[0266] Example 307, the agricultural row cleaner described in Example 306, further comprising a second actuator to apply a force opposite to the force applied by the first actuator.

[0267] Example 308, an agricultural planter, comprising: a tool bar; at least one ridge unit connected to the tool bar, the ridge unit comprising an opening system and a closing system; and a ridge cleaner as described in any one of Examples 301 to 307, which is attached to the tool bar or the ridge unit in front of the ridge unit along the direction of travel.

[0268] Example 401, an agricultural ridge cleaner (4000), comprising: an attachment bracket (4010) adapted to be connected to an agricultural tool bar (14), the attachment bracket having a first side and a second side; a first rear bracket (4040-1); a second rear bracket (4040-2); a first arm (4035-1) and a second arm (4036-1), which are pivotally connected to the first side of the attachment bracket (4010) and pivotally connected to the first rear bracket (4040-1); a third arm (4035-2) and a fourth arm (4036-2), which are pivotally connected to the attachment bracket (4010) 0) of the second side and pivotally connected to the second rear support (4040-2); a first frame (4030) formed by the second arm (4036-1) and the fourth arm (4036-2); a guide wheel frame (4042) connecting the first rear support (4040-1) and the second rear support (4040-2); a guide wheel (4050) disposed in the frame (4042); and at least one ridge cleaner wheel (4060) pivotally connected to at least one of the first rear support (4040-1) and the second rear support (4040-2).

[0269] Example 402, an agricultural row cleaner (4000) as described in Example 401, wherein a first row cleaner wheel (4060-1) is pivotally connected to the first rear support (4040-1) and a second row cleaner wheel (4060-2) is pivotally connected to the second rear support (4040-2).

[0270] Example 403, the agricultural row cleaner (4000) described in Example 402, wherein the guide wheel (4050) is arranged in the space between the two row cleaner wheels (4060-1, 4060-2).

[0271] Example 404, an agricultural ridge cleaner (4000) as described in any one of Examples 401 to Example 403, wherein the guide wheel (4050) is arranged behind the at least one ridge cleaner wheel (4060) in the travel direction (1) of the ridge cleaner (4000).

[0272] Example 405, an agricultural ridge cleaner (4000) as described in any one of Examples 401 to Example 404, wherein the guide wheel frame (4042) is pivotable relative to the first rear support (4040-1) and the second rear support (4040-2) to adjust the penetration depth of the at least one ridge cleaner wheel (4060) in the soil.

[0273] Example 406, the agricultural ridge cleaner (4000) described in any one of Examples 401 to 405, further includes a first actuator (4020) disposed on the first frame (4030) for adjusting the force applied to the soil by the at least one ridge cleaner wheel (4060).

[0274] Example 407, the agricultural row clearer (4000) described in Example 406 also includes a second actuator (4025) disposed on the first frame (4030) to apply a force opposite to the force applied by the first actuator (4020).

[0275] Example 408, an agricultural planter, comprising: a tool bar (14); at least one ridge unit (200) connected to the tool bar (14), the ridge unit (200) comprising an opening system (234) and a closing system (236); and a ridge cleaner (4000) described in any one of Examples 401 to 407, attached to the tool bar (14).

[0276] The above description and drawings are intended to be illustrative rather than limiting. Various modifications to the embodiments and general principles and features of the modular metering system and metering module and the processes described herein will be apparent to those skilled in the art. Therefore, the present disclosure should be accorded the broadest scope consistent with the appended claims and the full scope of equivalents to which such claims are entitled.

Claims

1. A ridge cleaner assembly mounted to an agricultural planter having a ridge unit with a furrow opening assembly configured to open a seed furrow in a soil surface as the planter travels in a forward direction of travel, the ridge cleaner assembly comprising: an upper subframe mounted to the planter forward of the ridge unit and longitudinally aligned with the furrowing assembly; a lower subframe having a first support arm and a second support arm, the first support arm rotatably supporting a first row cleaner wheel, the second support arm rotatably supporting a second row cleaner wheel, the first row cleaner wheel and the second row cleaner wheel being oriented to diverge outwardly and rearwardly so that the first row cleaner wheel and the second row cleaner wheel rotate about their respective rotation axes by engaging the soil surface as the planter travels in the forward travel direction, the rotating first row cleaner wheel and the second row cleaner wheel directing crop residue laterally outwardly to provide a row cleaner bed for the rearwardly aligned furrow opening assembly; a guide wheel rotatably supported at a rear end thereof between the first support arm and the second support arm, the guide wheel being disposed between and behind the first and second row cleaner wheels; a rear pillar subframe including a first rear pillar and a second rear pillar, the first support arm being pivotally attached to the first rear pillar and the second support arm being pivotally attached to the second rear pillar; a middle subframe pivotally connected at a front end to the upper subframe and at a rear end to a first support arm and a second support arm of the lower subframe; a first link pivotally connected at a front end to the upper subframe and pivotally connected at a rear end to a first rear support post of the lower subframe; a second link pivotally connected at a front end to the upper subframe and pivotally connected at a rear end to a second rear support post of the lower subframe; An actuator system is disposed between the upper sub-frame and the middle sub-frame, and the actuator system is capable of applying downward force to the lower sub-frame via the middle sub-frame.

2. The row cleaner assembly of claim 1 further comprising a depth selector capable of selectively positioning the lower subframe relative to the rear support subframe to vary the penetration depth of the row cleaner wheel into the soil surface.

3. The row cleaner assembly according to claim 2, wherein: The depth selector includes an arcuate slot in the lower subframe and a threaded connector, wherein the threaded connector extends through the arcuate slot and is received in an aperture in the rear support subframe, whereby selective positioning of the threaded connector relative to the arcuate slot changes the position of the lower subframe relative to the rear support subframe and the penetration depth of the ridger wheel.

4. The row cleaner assembly according to claim 2, wherein: The depth selector includes a series of apertures and a threaded connector, wherein the series of apertures are arranged in an arc in the lower subframe, and the threaded connector can be selectively positioned through one of the series of apertures and received in an aperture in the rear support subframe, whereby the selective positioning of the threaded connector within one of the series of apertures changes the position of the lower subframe relative to the rear support subframe and the penetration depth of the ridger wheel.

5. The row cleaner assembly according to claim 2, wherein: The depth selector includes a thumb screw which is threadably received in an aperture in the lower subframe, the end of the thumb screw being selectively positionable in one of a series of apertures arranged in an arc in the rear support subframe, whereby selective positioning of the thumb screw within one of the series of apertures in the rear support subframe changes the position of the lower subframe relative to the rear support subframe and the penetration depth of the ridger wheel.

6. The row cleaner assembly according to claim 2, wherein: The depth selector includes a spring biased handle which links the rear support subframe with the lower subframe, the spring biased handle being selectively positionable along an arm having a notch, whereby selective positioning of the spring biased handle along the arm having a notch changes the position of the lower subframe relative to the rear support subframe and the penetration depth of the ridger wheel.

7. The row cleaner assembly according to claim 2, wherein: The depth selector includes a spring biased handle which links the rear support subframe with the lower subframe, the spring biased handle being selectively positionable along a notched opening in the lower subframe, whereby selective positioning of the spring biased handle along the notched opening changes the position of the lower subframe relative to the rear support subframe and the penetration depth of the ridger wheel.

8. The row cleaner assembly according to claim 1, wherein: The actuator system includes a linear actuator coupled to the upper subframe at a front end and to the middle subframe at a rear end, whereby extension and contraction of the linear actuator causes the middle subframe and the lower subframe to move vertically relative to the upper subframe.

9. The row cleaner assembly according to claim 8, wherein: The linear actuator is a pneumatic cylinder or a hydraulic cylinder.

10. The row cleaner assembly of claim 1, wherein: The actuator system includes an airbag and a spring assembly, wherein the spring assembly is coupled between the upper subframe and the middle subframe, and the spring assembly is configured to apply an upward force to the middle subframe, wherein the airbag is coupled to the upper subframe and the middle subframe, and the airbag is configured to apply a downward force to the middle subframe.

11. The row cleaner assembly according to claim 1, wherein: The actuator system includes a first airbag and a second airbag, wherein the first airbag is positioned behind the second airbag, wherein the first airbag is coupled to the first link and the second link at the front end and to the intermediate sub-frame at the rear end, and wherein the second airbag is coupled to the front end of the intermediate sub-frame at the front end and to the first link and the second link at the rear end, whereby the expansion of the second airbag generates a lift force on the intermediate sub-frame, and whereby the expansion of the first airbag generates a downforce on the intermediate sub-frame.

12. The row cleaner assembly of claim 1, wherein: The rear pillar subframe includes a scraper that is selectively positionable relative to the guide wheel.

13. The ridge cleaner assembly according to claim 1 further includes a third ridge cleaner wheel assembly, the third ridge cleaner wheel assembly including a mounting bar and a third ridge cleaner wheel, the mounting bar being attachable to one of the first support arm and the second support arm of the lower sub-frame, the third ridge cleaner wheel being rotatably mounted to a front end portion of the mounting bar near the front of one of the first ridge cleaner wheel and the second ridge cleaner wheel.

14. The ridge cleaner assembly according to claim 1 further includes a ridge cleaner diverter assembly, the ridge cleaner diverter assembly including a vertically oriented diverter plate, the diverter plate being supported from the front end of the lower subframe and being disposed between the first ridge cleaner wheel and the second ridge cleaner wheel, the diverter plate having a front edge extending forwardly from the first ridge cleaner wheel and the second ridge cleaner wheel.

15. The row cleaner assembly according to claim 14, wherein: The diverter plate is vertically adjustable relative to the lower subframe.

16. The row cleaner assembly of claim 15, wherein: The diverter plate is longitudinally adjustable relative to the lower subframe.

17. The row cleaner assembly of claim 1, further comprising a load sensor configured to generate a load signal corresponding to the downforce exerted on the lower subframe.

18. The row cleaner assembly of claim 17, wherein: The load sensor includes a load pin that rotatably supports the guide wheel.

19. The row cleaner assembly of claim 17, wherein: The load sensor includes a Wheatstone bridge disposed on the lower subframe.

20. The row cleaner assembly of claim 17, wherein: The load sensor includes a load sensor assembly, which includes a load sensing member, which receives an applied load via a sleeve, the sleeve is coupled to a rod or shaft, the rod is attached to the lower sub-frame, and the shaft supports at least one of the first and second row cleaner wheels.

21. The row cleaner assembly of claim 17, wherein: The load sensor is in signal communication with a controller, and the controller is configured to control the actuator system in response to the generated load signal to control a downforce applied by the actuator system to the lower subframe.

22. The row cleaner assembly of claim 17, wherein: The load sensor is in signal communication with a fluid control port configured to control the actuator system in response to the generated load signal to control a downforce applied by the actuator system to the lower subframe.

23. The row cleaner assembly of claim 17, wherein: The load sensor is in signal communication with a monitor responsive to the generated load signal and operable to control the actuator system to maintain a desired downforce based on the generated load signal.

24. A ridge cleaner assembly mounted to an agricultural planter having a ridge unit with a furrow opening assembly configured to open a seed furrow in a soil surface as the planter travels in a forward direction of travel, the ridge cleaner assembly comprising: a lower subframe rotatably supporting a first and a second row cleaner wheel, the first and second row cleaner wheels being oriented to diverge outwardly and rearwardly so that the first and second row cleaner wheels rotate about their respective rotational axes by engaging the soil surface as the planter travels in the forward direction of travel, the rotating first and second row cleaner wheels directing crop residue laterally outwardly to provide a row cleaner bed for the rearwardly aligned furrow opening assembly; a parallel arm link pivotally connected at a rear end thereof to the ridge unit and pivotally connected at a front end thereof to the lower subframe; as well as An actuator system is capable of applying a downward force to the lower subframe.

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