Agricultural working machine

Abstract

To provide a farm working machine capable of performing proper soil gathering work.SOLUTION: The agricultural implement 1 is equipped with an inner side soil gathering body 61 and an outer side soil gathering body 81 for performing soil gathering work for gathering soil to the groove part side of the traveling track of the tractor. The inner soil gathering body 61 has a plate-like inner soil gathering plate part 72 for performing soil gathering work. The outer side soil gathering body 81 has a plate-like outer side soil gathering plate part 117 for performing soil gathering work. When the outer soil-pressing body 81 is installed at a position on the side of the central working part 11, the front end of the inner soil-pressing plate part 72 of the inner soil-pressing body 62 is positioned behind the rear end of the outer soil-pressing plate part 117 of the outer soil-pressing body 81 in a side view.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] An embodiment of the present invention relates to an agricultural machine. [Background technology]

[0002] BACKGROUND ART Conventionally, an agricultural work machine such as that described in Patent Document 1 below is known.

[0003] This conventional agricultural work machine (plowing machine) is equipped with a central work unit that is connected to the rear of a tractor, which is a traveling vehicle, and performs tilling and leveling work, extension work units that are rotatable up and down at both left and right ends of this central work unit and perform tilling and leveling work, and inner and outer soil-piling bodies that pile soil on the furrow side of the tractor's tracks.

[0004] The inner soil-piling body has a plate-shaped inner soil-piling portion for carrying out soil-piling work, and the outer soil-piling body also has a plate-shaped outer soil-piling portion for carrying out soil-piling work. In a side view, the rear end of the outer soil-piling portion is positioned further rearward than the rear end of the inner soil-piling portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-182111 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned conventional agricultural machine, the difference between the timing at which the inner soil piling section starts piling work and the timing at which the outer soil piling section starts piling work is small, so there is a risk that the soil piled up between these two soil piling sections will stagnate (clog), causing problems with the piling work.

[0007] Therefore, one of the objects of the embodiments of the present invention is to provide a mounding body and an agricultural work machine that can perform appropriate mounding work. [Means for solving the problem]

[0008] An agricultural work machine according to an embodiment of the present invention is an agricultural work machine that is connected to a traveling vehicle, and is equipped with a one-side soil-piling body and an other-side soil-piling body that perform soil-piling work to pile soil on the groove side of the traveling vehicle's track, the one-side soil-piling body having a one-side soil-piling section that performs soil-piling work, the other-side soil-piling body having a other-side soil-piling section that performs soil-piling work, and the front end of the one-side soil-piling section either coincides with the rear end of the other-side soil-piling section in a side view, or is located further rearward than that rear end.

[0009] In addition, an agricultural working machine according to an embodiment of the present invention is an agricultural working machine that is connected to a traveling vehicle, and is equipped with a one-side soil-piling body and an other-side soil-piling body that perform soil-piling work to pile soil on the groove side of the traveling vehicle's track, the one-side soil-piling body has a one-side soil-piling section that performs soil-piling work, the other-side soil-piling body has a other-side soil-piling section that performs soil-piling work, the front end of the one-side soil-piling section is located forward of the rear end of the other-side soil-piling section in a side view, and the front-to-back length dimension between the front end of the one-side soil-piling section and the rear end of the other-side soil-piling section in a side view is less than one-third of the front-to-back length dimension of the other-side soil-piling section in a side view.

[0010] Furthermore, an agricultural work machine according to an embodiment of the present invention is an agricultural work machine that is connected to a traveling vehicle, and comprises a working unit connected to the traveling vehicle, an extended working unit provided on the working unit, an inner mounding body that is located on the left-right central side of the working unit and has an inner mounding part that performs mounding work to pile soil on the groove side of the traveling vehicle's track, and an outer mounding body that is located further outward than the inner mounding body and has an outer mounding part that performs mounding work to pile soil on the groove side of the traveling vehicle's track, and when the outer mounding body is set at a position on the left-right end side of the working unit, the front end of the inner mounding part is coincident with the rear end of the outer mounding part in a side view, or is located rearward of that rear end, and when the outer mounding body is set at a position on the inner end side of the extended working unit, the front end of the inner mounding part is located forward of the rear end of the outer mounding part in a side view. [Effects of the Invention]

[0011] According to an embodiment of the present invention, appropriate soil piling work can be performed. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a side view of an agricultural machine according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a plan view of the same agricultural work machine (including a rear view showing part of the rear wheels of the tractor). [Figure 3] FIG. [Figure 4] FIG. 2 is a partial perspective view of the same agricultural work machine (when the outer soil-remover is set to a position on the central working section side). [Figure 5] FIG. 2 is a partial perspective view of the same agricultural work machine (when the outer soil-remover is set to a position on the extension working section side). [Figure 6] 10(a) and 10(b) are exploded perspective views showing the outer mound and the support body. [Figure 7] FIG. 2 is a schematic partial plan view of the same agricultural work machine. [Figure 8]10(a) to 10(d) are schematic partial plan views showing that the outer mounding bodies can be set to four positions (first position to fourth position) on the central working section side. [Figure 9] This is a diagram showing the inner mounding body, where (a) is one side view, (b) is a front view, (c) is another side view, and (d) is a view seen from arrow A. [Figure 10] 1A and 1B are diagrams showing the outer mounding body, in which (a) is a plan view and (b) is a side view. [Figure 11] This is a view taken from the arrow B showing the outer soil-retaining body. [Figure 12] This is a schematic side view showing the positional relationship between the inner and outer mounding bodies (when the outer mounding body is set in a position on the central working section side). [Figure 13] This is a schematic side view showing the overlapping relationship between the inner soil-removing plate portion of the inner soil-removing body and the outer soil-removing body (when the outer soil-removing body is set in a position on the central working section side). [Figure 14] 10 is a schematic side view showing the positional relationship between the inner and outer mounding bodies (when the outer mounding body is set at a position on the extended working section side). FIG. [Figure 15] FIG. 10 is a schematic diagram illustrating the operation of the outer soil-retaining body. [Figure 16] A schematic diagram explaining the operation of the inner and outer mounding bodies (when the outer mounding body is set in a position on the central working section side), where (a) is a diagram of this embodiment (example) and (b) is a diagram of a comparative example. [Figure 17] A schematic diagram explaining the operation of the inner and outer mounding bodies (when the outer mounding body is set in a position on the extended working section side), where (a) is a diagram of this embodiment (example) and (b) is a diagram of a comparative example. [Figure 18] FIG. 10 is a diagram showing a modified example of the outer mound. [Figure 19] 10(a) and 10(b) are diagrams showing other modified examples of the outer mounds. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the present invention will be described with reference to FIGS.

[0014] In Figures 1 and 2, 1 is an agricultural work machine, and this agricultural work machine 1 is connected to the rear of a tractor 2, which is a vehicle that can travel on a field, for example, and is a plow machine that moves forward (in the direction of travel) on the field as the tractor 2 travels, performing a specified agricultural work, such as plowing or leveling work (plowing work).

[0015] The tractor 2 comprises a tractor body (not shown) with left and right front wheels (not shown) at the front and left and right rear wheels (tires, crawlers, etc.) 3 at the rear. A three-point linkage (agricultural implement lifting device) 4 is provided at the rear end of the tractor body, and the agricultural implement 1 is detachably connected to this three-point linkage 4 via a coupler 5 (see FIG. 1).

[0016] When working in a field, the left and right rear wheels (traveling means) 3 are driven and rotated by the power of the engine mounted on the tractor body, and the tractor 2 travels on the field. As the rear wheels 3 pass by, a concave groove (a groove left by the traveling vehicle) 6 and convex mounds of soil 7 on both sides of it are formed in the field (see Figure 2).

[0017] The agricultural work machine 1 is, for example, a folding work machine with a foldable three-part structure, and is detachably connected to a three-point link section 4 at the rear of the tractor 2 via a coupler 5, and is equipped with a central work section 11 which is a work section that performs at least tilling and leveling work, left and right extension work sections 12 which are provided at both left and right ends of the central work section 11 so as to be rotatable in the vertical direction around a rotation center axis (rotation fulcrum) 10 and perform at least tilling and leveling work, and cylinders (electric hydraulic cylinders, hydraulic cylinders, etc.) 13 which are left and right rotation drive means that rotate the extension work sections 12 in the vertical direction around the rotation center axis 10 relative to the central work section 11.

[0018] Each of the left and right extension working units (left and right working units that are symmetrical to each other) 12 is placed in an unfolded working state by rotating in one direction (approximately 180 degrees in the opening direction) based on the extension and retraction action of the extendable cylinder 13, and is placed in a folded non-working state by rotating in the other direction (approximately 180 degrees in the closing direction).

[0019] Therefore, the agricultural work machine 1 can be selectively switched between a state in which work (plowing or soil-pulling) is performed using only the central work unit 11, a state in which work is performed using the central work unit 11 and both the left and right extension work units 12, and a state in which work is performed using the central work unit 11 and either the left or right extension work unit 12.

[0020] The central working unit 11 comprises a central body 16 which is detachably connected to the three-point link unit 4 at the rear of the tractor 2 via a coupler 5, a central tilling body (not shown) which is rotatably mounted on the central body 16 and performs tilling work while rotating in a predetermined direction, and a central leveling body 18 which is rotatably mounted on the central body 16 in the vertical direction and performs ground leveling work behind the central tilling body.

[0021] The central body 16 has a three-point connection part 21 that is detachably connected (attached) to the three-point link part 4 via a coupler 5, and this three-point connection part 21 is composed of a top mast 23 that holds a top pin 22 and left and right lower arms 25 that hold lower pins 24.

[0022] The central body 16 also has a transmission case section 27, which is a shaft holding section that rotatably holds an input shaft 26 that is connected to the PTO shaft of the tractor 2 via a joint, and the inner ends of frame pipe sections 28, which are frame sections that are longitudinal in the left-right direction, are fixed to both the left and right sides of this transmission case section 27.

[0023] Although not shown, the central tilling body has a tilling shaft, which is a rotating shaft that rotates based on power from the input shaft 26, and multiple tilling tines are removably attached to this tilling shaft. The upper part of the central tilling body is covered by a plate-shaped tilling cover part 30 of the central body 16 to prevent tilled soil from scattering. In addition, a front rubber 29, which is an elastic plate, is removably attached to the front end of the tilling cover part 30.

[0024] The central leveling body 18 has a first leveling member (leveling plate) 36 that is rotatable in the vertical direction at the rear end of the tillage cover portion 30 of the central body 16, and a second leveling member (rake) 37 that is rotatable in the vertical direction is provided at the lower end of this first leveling member 36.

[0025] The extended working unit 12 comprises an extended body 41 which is mounted on both left and right ends of the central body 16 and is rotatable in the vertical direction around a central axis of rotation (rotation fulcrum) 10; an extended tilling body 42 which is rotatably mounted on the extended body 41 and which rotates in a predetermined direction together with the central tilling body to perform tilling work when the extended working unit 12 is in the extended working state; and an extended soil leveling body 43 which is rotatably mounted on the extended body 41 in the vertical direction and which performs soil leveling work behind the extended tilling body 42 together with the central soil leveling body 18 when the extended working unit 12 is in the extended working state.

[0026] The extended tilling body, like the central tilling body (not shown), consists of a tilling shaft 44 and multiple tilling tines 45, and when in the extended working state, its upper part is covered by a plate-shaped tilling cover part 40 of the extended body 41 to prevent tilled soil from scattering. In addition, a front rubber 39, which is an elastic plate, is removably attached to the front end of the tilling cover part 40.

[0027] The extended ground leveling body 43 has a first ground leveling member (leveling plate) 46 that is attached to the rear end of the tilling cover section 40 of the extended body 41 so as to be able to rotate up and down, and a second ground leveling member (rake) 47 that is attached to the lower end of this first ground leveling member 46 so as to be able to rotate up and down. In addition, an extension rake 48 is attached to the outer end of the second ground leveling member 47, and this extension rake 48 can be selectively switched between an extended working state and a folded non-working state by an extension rake switching section (opening / closing unit) 49.

[0028] 2, reference numeral 51 denotes a work state switching section (earth-pulling unit) for selectively switching the ground leveling bodies 18, 43 between a ground leveling work state and an earth-pulling work state, and when the ground leveling bodies 18, 43 are switched to an earth-pulling work state by this work state switching section 51, the agricultural work machine 1 enters an earth-pulling state in which earth-pulling work is possible. Also, reference numeral 52 denotes a ground leveling body biasing section (pressure unit) for biasing the ground leveling bodies 18, 43 downward.

[0029] On the other hand, as shown in Figures 1 and 2, the agricultural work machine 1 is equipped with left and right track erasers 55 that can guide soil (including miscellaneous materials such as straw and grass) from the mounded soil portion 7 of the field toward the concave groove portion 6, thereby erasing the tracks left by both rear wheels 3.

[0030] Each of the left and right travel mark erasing sections 55 has an outer soil-piling means 56 for moving the soil of the earth mound 7 on the outer side of the rear wheel 3 located on the front side toward the adjacent groove 6, and an inner soil-piling means 57 for moving the soil of the earth mound 7 on the inner side of the rear wheel 3 located on the front side toward the adjacent groove 6.

[0031] The left-side trace erasing unit 55 for erasing the traces of the left rear wheel 3 and the right-side trace erasing unit 55 for erasing the traces of the right rear wheel 3 are configured symmetrically to each other, so the following explanation will focus on the specific configuration of the left-side trace erasing unit 55.

[0032] As shown in Figure 3, the inner soil-piling means (one-side soil-piling means) 57 has an inner soil-piling body (inner soil-piling plate) 61, which is a plate-shaped one-side soil-piling body that performs soil-piling work by piling soil from the mounded portion 7 on the inside (one side) of the rear wheel 3 on the groove portion 6 side of the track of the left rear wheel 3, and an inner support body 62 that supports this inner soil-piling body 61.

[0033] The inner mounding body 61 is detachably attached to and supported by a U-shaped frame-shaped inner support body 62 by means of attachment means 63. The attachment means 63 is, for example, a bolt 64 and a nut 65.

[0034] The inner support 62 is welded to the front end of the tillage cover portion 30 of the central body 16, and is attached to the front end of a mounting plate 66 by mounting means 67. The mounting plate 66 is welded to the frame pipe portion 28 of the central body 16.

[0035] The inner support body 62 has a pair of left and right opposing plate portions 68 that are spaced apart and face each other, and each opposing plate portion 68 has a plurality of (for example, two) mounting holes 69 formed therein. By changing (selecting) the mounting holes 69 into which the bolts 64 are inserted (inserted), the position of the inner mound body 61 can be changed in stages (for example, in two stages) left and right relative to the inner support body 62 (see FIG. 7).

[0036] The inner soil-removing body 61 is detachably attached to the opposing plate portion 68 of the inner support body 62 by an attachment means 63, and has an attachment plate portion 71 which is a flat attachment portion positioned vertically in the front-to-back direction, an inner soil-removing plate portion (inner soil-removing portion) 72 which is a bent plate-like one-side soil-removing portion which is bent outwardly and extends diagonally upwards and which performs soil-removing work by scooping up the soil from the mounded portion 7 of the field diagonally upwards and bringing it toward the trench portion 6, and a reinforcing plate portion 70 which reinforces the attachment plate portion 71.

[0037] A plurality of (for example, four) mounting holes 73 are formed in the reinforcing plate portion 70 and the mounting plate portion 71. By changing the mounting holes 73 into which the bolts 64 are inserted, the vertical position of the inner mounding body 61 can be changed in stages (for example, in two stages) relative to the inner support body 62. The detailed configuration of the inner mounding body 61 will be described later.

[0038] As shown in Figures 4 to 8, the outer soil-piling means (other-side soil-piling means) 56 has an outer soil-piling body (outer soil-piling plate) 81, which is a plate-shaped other-side soil-piling body that performs soil-piling work by piling soil from the mounded portion 7 on the outside (other side) of the rear wheel 3 on the groove portion 6 side of the track of the left rear wheel 3, and an outer support body 82, which is a support body that supports this outer soil-piling body 81.

[0039] The outer soil-retaining body 81 can be selectively set to multiple positions on the central working section 11 side (not a free arbitrary position, but multiple predetermined selected positions that are different from each other in the left and right directions) and to a position on the extension working section 12 side (which can be one or multiple).

[0040] Specifically, the outer soil-retaining body 81 can be selectively set to at least three positions on the central working section 11 side, i.e., for example, four positions (first position to fourth position) and one position on the extended working section 12 side.

[0041] In other words, in order to accommodate the size and position (tread) of the rear wheels 3 of the tractor 2 and field conditions, the outer soil-retaining body 81 can be moved left and right in stages (for example, in four stages) relative to the central working section 11, and can also be moved to a single position on the extended working section 12 side.

[0042] The outer support body 82 is used when the outer backing body 81 is set to a position on the central working section 11 side, but is not used when the outer backing body 81 is set to a position on the extended working section 12 side.

[0043] In other words, when the outer soil-removing body 81 is set to a position on the central working unit 11 side (any one of the selected positions selected from the first position to the fourth position), the outer soil-removing body 81 is attached to and supported by the outer support body 82, which is the attachment part attached to the central working unit 11 (see Figure 4).

[0044] In contrast, when the outer soil-retaining body 81 is set to a position (fifth position) on the extension working section 12 side, the outer support body 82 is not used, and the outer soil-retaining body 81 is attached to and supported by the attachment plate portion 83, which is the attachment portion of the extension working section 12 (see Figure 5).

[0045] The outer mounding body 81 can be adjusted in vertical position relative to the mounting plate portion 83 in stages (for example, in two stages) by changing the mounting holes 119 into which the bolts 106 are inserted. Also, in Figure 5, the holder member 86 remains attached to the front end of the central body 16, but the holder member 86 may be removed from the front end of the central body 16.

[0046] The mounting plate portion 83 to which this outer soil-retaining body 81 can be attached is formed at the front end portion, which is part of the side plate 40a of the tillage cover portion 40 of the extension body 41 of the extension working section 12, and this mounting plate portion 83 has multiple (for example, two) mounting holes 84 formed therein.

[0047] Here, the outer support body 82 has a holder member 86 which is a first member that can be attached and detached to the front end of the tillage cover section 30 of the central body 16 of the central working section 11 and whose position can be changed (adjusted) left and right in stages (for example, in two stages) relative to the front end of the tillage cover section 30, and a backing plate member 87 which is a plate-shaped second member that can be attached and detached to this holder member 86 and the outer soil-piling body 81, respectively.

[0048] The holder member 86 is detachably attached to the upper surface of a bent plate 92 at the front end of the tillage cover portion 30 and to the front surface of the cover reinforcing member 88 by attachment means 89. The attachment means 89 is, for example, a bolt 90 and a nut 91. The bent plate 92 is a plate-like member that is bent at multiple points and is elongated in the left-right direction, with sufficient strength.

[0049] A plurality of (for example, three) mounting holes 93 are formed in each of the bent plate 92 and the cover reinforcing member 88. By changing the mounting holes 93 into which the bolts 90 are inserted, the left and right position of the holder member 86 can be changed in stages (for example, in two stages) relative to the bent plate 92 and the cover reinforcing member 88.

[0050] The holder member 86 also has a bent plate-like mounting plate portion 96 formed with a welding relief hole 94 and a plurality (for example, four) of mounting holes 95, and a pair of left and right opposing plate portions 97 that are spaced apart and face each other are erected on the mounting plate portion 96, with a reinforcing plate portion 98 spanning between these opposing plate portions 97. A plurality (for example, two) of mounting holes 99 are formed in each of the left and right opposing plate portions 97.

[0051] The opposing plate portions 97 and the reinforcing plate portion 98 form a forward-projecting support portion 100 that supports the backing plate member 87 and the outer soil-retaining body 81.

[0052] As shown in Figures 4 and 6, the backing plate member 87 is removably attached together with the outer soil-retaining body 81 to the opposing plate portion 97 of the support portion 100 of the holder member 86 using a common attachment means 101, and the outer soil-retaining body 81 is removably attached to the attached backing plate member 87 using an attachment means 102.

[0053] The attachment means 101 is, for example, a hook pin 103, a headed pin 104, and an R pin 105. The attachment means 102 is, for example, a bolt 106 and a nut 107.

[0054] The backing plate member 87 also has a rectangular first plate portion 111 having a plurality of (e.g., four) mounting holes 108 formed therein into which the pins 103, 104 can be inserted, a rectangular second plate portion 112 having a plurality of (e.g., two) mounting holes 109 formed therein into which the bolts 106 can be inserted, and a rectangular third plate portion 113 that connects these two plate portions 111, 112 together.

[0055] The first plate portion 111 is a flat plate-like portion that is detachable from the holder member 86. The second plate portion 112 is a flat plate-like portion that is detachable from the outer mounding body 81. Therefore, the first plate portion 111 is provided so as to protrude rearward from one left-right end of the flat third plate portion 113 that is positioned vertically along the left-right direction, and the second plate portion 112 is provided so as to protrude forward from the other left-right end of the third plate portion 113.

[0056] The outer soil-piling body 81 is detachably attached to the second plate portion 112 of the backing plate member 87 by the attachment means 102, and has an attachment plate portion 116 which is a flat attachment portion positioned vertically in the front-to-back direction, an outer soil-piling plate portion (outer soil-piling portion) 117 which is connected to the front end of the attachment plate portion 116 in a curved manner facing outward and is a flat plate-shaped soil-piling portion on the other side which performs soil-piling work to move the soil in the soil mound portion 7 of the field toward the trench portion 6, and a reinforcing plate portion 118 which reinforces these two plate portions 116, 117.

[0057] The mounting plate portion 116 is formed with a plurality of (for example, four) mounting holes 119 into which the pins 103 and 104 can be inserted, and a plurality of (for example, two) mounting holes 120 into which the bolts 106 can be inserted.

[0058] By changing the mounting holes 108, 119 into which the pins 103, 104 are inserted, the vertical positions of the backing plate member 87 and the outer mounding body 81 can be changed in stages (for example, in two stages) relative to the holder member 86. In other words, the backing plate member 87 and the outer mounding body 81 are detachably attached to the support part 100 of the holder member 86 by a common attachment means 101, and their vertical positions can be changed. The detailed configuration of the outer mounding body 81 will be described later.

[0059] Furthermore, as shown in Figures 6 to 8, the left-right position of the outer soil-retaining body 81 can be changed in stages (for example, in four stages) relative to the central working section 11 by changing the left-right position (left-right position adjustment) of the holder member 86 of the outer supporting body 82 and changing the installation of the backing plate member 87 of the outer supporting body 82 (assembly change shown in Figures 6(a) and (b)).

[0060] In other words, the outer mounding body 81 can be selectively set (positioned) at any one of first to fourth positions which are different from each other in the left-right direction in front of the central working unit 11, depending on the size and position of the left rear wheel 3. The outer mounding body 81 can also be set at one position (fifth position) on the left extension working unit 12 side.

[0061] Here, for example, when the outer soil-recovering body 81 is set at the first position (one position) shown in Figure 8(a), the first plate portion 111 of the backing plate member 87 is removably attached to the left side surface (one side) of the opposing plate portion 97 on the left side of the holder member 86, the mounting plate portion 116 of the outer soil-recovering body 81 is removably attached to the right side surface (other side) of the opposing plate portion 97 on the right side of the holder member 86, and the second plate portion 112 of the backing plate member 87 is removably attached to the left side surface (one side) of the mounting plate portion 116 of the outer soil-recovering body 81.

[0062] That is, in this case, the backing plate member 87 is detachably attached to the holder member 86 and the outer mounding body 81 in a first state in which the first plate portion 111 is positioned to the left (outside) of the second plate portion 112. The same applies when the backing plate member 87 is set to the third position (change of left / right position of the holder member 86) shown in Figure 8(c), and the backing plate member 87 is attached in the first state.

[0063] In contrast, when the outer soil-recovering body 81 is set to the second position (a position different from the first position) shown in Figure 8(b), for example, by inverting the backing plate member 87 upside down, the first plate portion 111 of the backing plate member 87 is removably attached to the right side surface (the other surface) of the opposing plate portion on the right side of the holder member 86, the mounting plate portion 116 of the outer soil-recovering body 81 is removably attached to the left side surface (the first surface) of the opposing plate portion 97 on the left side of the holder member 86, and the second plate portion 112 of the backing plate member 87 is removably attached to the right side surface (the other surface) of the mounting plate portion 116 of the outer soil-recovering body 81.

[0064] That is, in this case, the backing plate member 87 is detachably attached to the holder member 86 and the outer mounding body 81 in a second state in which the first plate portion 111 is positioned to the right (inner side) of the second plate portion 112. The same applies when the backing plate member 87 is set to the fourth position shown in Figure 8(d) (the left-right position of the holder member 86 is changed), and the backing plate member 87 is attached in a second state different from the first state.

[0065] In this way, the outer soil-retaining body 81 can be selectively set to any of the first to fourth positions by attaching it to the front end of the tillage cover part 30 via the outer support body 82.

[0066] On the other hand, FIG. 9 is a diagram showing the inner soil-piling body 61 of the inner soil-piling means 57 of the left-side travel mark erasing section 55.

[0067] As shown in Figure 9, the inner soil-piling body 61 comprises an attachment plate portion 71 that is detachably attached to the attachment portion (inner support body 62), an inner soil-piling plate portion 72 that is connected to the lower end of the attachment plate portion 71 in a curved manner toward the left side (outside) and performs the specified soil-piling work, and a reinforcing plate portion 70 that is fixed to the attachment plate portion 71.

[0068] The mounting plate portion 71 and the reinforcing plate portion 70 are formed with two mounting holes 73 (73a) for the lower position and two mounting holes 73 (73b) for the upper position.

[0069] The inner soil-retaining plate portion 72 has a flat first soil-retaining plate portion 76 that is bent at an angle toward the left side with a linear first fold line L1 as its base end relative to the flat mounting plate portion 71 that is aligned in the up-down direction (vertical direction), and a flat second soil-retaining plate portion 77 that is bent at an angle toward the left side with a linear second fold line L2 as its base end relative to the first soil-retaining plate portion 76.

[0070] The second gathering plate portion 77 is formed larger than the first gathering plate portion 76. The distance between the first fold line L1 and the second fold line L2 gradually increases from the front end side toward the rear end side of the first gathering plate portion 76 in a side view.

[0071] The inner soil-accumulating plate portion 72 has an arc-shaped end portion 78 at its front end portion (front edge portion) that is arc-shaped (including substantially arc-shaped) and protrudes forward. This arc-shaped end portion 78 is provided from the mounting plate portion 71 to the first soil-accumulating plate portion 76 and the second soil-accumulating plate portion 77, and has a radius of curvature R (for example, R = 100 mm) centered on the center point O.

[0072] Next, FIGS. 10 and 11 are diagrams showing the outer soil-piling body 81 of the outer soil-piling means 56 of the left-side travel mark erasing section 55. FIG.

[0073] As shown in Figures 10 and 11, the outer soil-piling body 81 comprises an attachment plate portion 116 that is detachably attached to the attachment portion (the outer support body 82 or the attachment plate portion 83), an outer soil-piling plate portion 117 that is connected to the front end of the attachment plate portion 116 in a curved manner toward the left side and performs the specified soil-piling work, and an approximately triangular reinforcing plate portion 118 that is fixed across both plate portions 116, 117.

[0074] Two mounting holes 120 are formed on the front side of the mounting plate portion 116. Furthermore, two mounting holes 119 (119a) for the lower position and two mounting holes 119 (119b) for the upper position are formed on the rear side of the mounting plate portion 116.

[0075] Here, as shown in Figure 10(a), the mounting plate portion 116 is positioned along the front-to-back direction (direction of travel) when attached to the mounting portion, but the outer piling plate portion 117 is inclined at a predetermined angle α (for example, α = 30°) relative to the front-to-back direction so that it is positioned more to the left as it approaches the front end in a plan view.

[0076] Also, as shown in Figures 10(b) and 11, the front end (front edge) of the outer soil-collecting plate portion 117 is formed in a circular arc shape that convex forward over almost the entire range from the upper end to the lower end.

[0077] Specifically, the front end of the outer soil-retaining plate portion 117 has one slight straight end 110 located in the vertical direction at the forefront of the front end, and also has multiple arc-shaped end portions each with a different radius of curvature, i.e., for example, three arc-shaped end portions: a first arc-shaped end portion 121, a second arc-shaped end portion 122, and a third arc-shaped end portion 123.

[0078] In other words, the front end of the outer soil-accumulating plate portion 117 is made up of one slight vertical linear end portion 110 located above the vertical center of the outer soil-accumulating plate portion 117, and three arc-shaped end portions 121, 122, 123 with larger radii of curvature toward the lower end, so that substantially the entire front end of the outer soil-accumulating plate portion 117 forms an arc shape that convex forward. In other words, the front end of the outer soil-accumulating plate portion 117 is curved in an arc shape overall from the top end to the bottom end.

[0079] The first arc-shaped end 121 has an arc-shape that convex obliquely toward the upper front side, and is located between the upper end of the front end of the outer mounding plate portion 117 and the foremost end of the front end (straight end 110). The second arc-shaped end 122 has an arc-shape that convex obliquely toward the lower front side, and is located between the foremost end of the front end of the outer mounding plate portion 117 (straight end 110) and the third arc-shaped end 123. The third arc-shaped end 123 has an arc-shape that convex obliquely toward the lower front side, and is located between the second arc-shaped end 122 and the lower end of the front end of the outer mounding plate portion 117.

[0080] Therefore, both the second arcuate end portion 122 and the third arcuate end portion 123 are located below the foremost end of the front end portion of the outer soil retaining plate portion 117, and the third arcuate end portion 123 is located below the second arcuate end portion 122. The length of the third arcuate end portion 123 in the arc direction is more than twice, preferably more than five times, the length of the second arcuate end portion 122 in the arc direction.

[0081] In addition, the first arcuate end portion 121 has a first radius of curvature R1 (for example, R1 = 50 mm) centered on the first center point O1. The second arcuate end portion 122 has a second radius of curvature R2 (for example, R2 = 80 mm) centered on the second center point O2. The third arcuate end portion 123 has a third radius of curvature R3 (for example, R3 = 310 mm) centered on the third center point O3. Therefore, these three arcuate end portions 121, 122, and 123 satisfy the relationship of "R1 < R2 < R3".

[0082] Furthermore, the mounting plate portion 116 connected to the rear end portion of the outer soil retaining plate portion 117 has an inclined linear end portion 125 with a front-low-and-rear-high inclination at the lower end portion. Between this inclined linear end portion 125 and the third arcuate end portion 123, a fourth arcuate end portion 126 having an arc shape convex toward the rear lower side is formed. That is, on the lower end side of the outer soil retaining plate portion 117, two continuous arcuate end portions 123 and 126 are formed in an arc shape convex downward. The fourth arcuate end portion 126 has a fourth radius of curvature R4 (for example, R4 = 80 mm) centered on the fourth center point O4.

[0083] And, there is a space portion 127 for allowing soil to escape to the outer side below the mounting plate portion 116 and behind the outer soil retaining plate portion 117. That is, a space portion 127 for soil escape having a substantially triangular shape in side view is formed as a notch below the mounting plate portion 116. The mounting plate portion 116 has a vertical linear end portion 128 located along the vertical direction at the rear end portion.

[0084] Furthermore, the outer mounding body 81 has a horizontal linear end 129 at its upper end. In other words, the upper end of the outer mounding body 81 is composed of only one horizontal linear end 129 positioned along the horizontal direction. Note that, for example, the upper end of the outer mounding body 81 may be composed of a first linear end that is inclined and low in the front and high in the rear, and a second linear end that is horizontal and connected to the rear end of the first linear end.

[0085] 11, the vertical length dimension a1 of the linear end portion 110, which is a straight portion along the vertical direction, is not more than one-fifth, and preferably not more than one-fiftieth, of the vertical length dimension a2 (the distance between the upper and lower front ends) of the front end of the outer mounding board portion 117. For example, in the illustrated example, dimension a1 is "approximately 1.7 mm" and dimension a2 is "approximately 225 mm."

[0086] Furthermore, the longitudinal length dimension b1 of the front end of the outer soil-removing plate portion 117 (the distance between the foremost front end and the lower front end) is at least two-thirds, and preferably at least seven-tenths, of the longitudinal length dimension b2 of the outer soil-removing body 81. In the illustrated example, for example, dimension b1 is "approximately 265 mm," and dimension b2 is "approximately 358 mm." Note that the above dimensions of the outer soil-removing body 81 are dimensions when viewed from a direction perpendicular to the outer surface of the flat outer soil-removing plate portion 117 of the outer soil-removing body 81 (dimensions in the direction of arrow B).

[0087] Furthermore, since dimension a1 is less than one-fifth of dimension a2 and dimension b1 is more than two-thirds of dimension b2, the front end of the outer soil-retaining plate portion 117 is shaped in a way that makes it difficult for debris in the soil (straw, grass, etc.) to get caught.

[0088] Next, FIG. 12 is a schematic side view showing the positional relationship between the inner mounding body 61 and the outer mounding body 81 in the left-side travel mark erasing section 55 (when the outer mounding body is set in a position on the central working section side).

[0089] As shown in FIG. 12, the front end of the inner soil-piling plate portion 72 of the inner soil-piling body 61 is located in the vicinity of and rearward of the rear end of the outer soil-piling plate portion 117 of the outer soil-piling body 81 in a side view.

[0090] In other words, the inner mounding plate portion 72 of the inner mounding body 61, which is located toward the center of the left-right direction of the central working unit 11 (near the coupler), and the outer mounding plate portion 117 of the outer mounding body 81, which is located further outward than the inner mounding body 61, are positioned so as not to overlap each other in a side view. The longitudinal length dimension A between the rear end of the outer mounding plate portion 117 and the front end of the inner mounding plate portion 72 is, for example, "approximately 4 mm."

[0091] In addition, the rear end of the inner soil-piling plate portion 72 of the inner soil-piling body 61 is located rearward of the front end of the tillage cover portion 30 in a side view. The longitudinal length dimension B between the front end of the tillage cover portion 30 and the rear end of the inner soil-piling plate portion 72 is, for example, "approximately 30 mm" (the same applies when the outer soil-piling body is set in a position on the extension working section side).

[0092] Next, FIG. 13 is a schematic side view showing the overlapping relationship between the inner mounding body 61 and the outer mounding body 81 in the left-side travel mark erasing section 55 (when the outer mounding body is set in a position on the central working section side).

[0093] 13, the inner soil-piling plate portion 72 of the inner soil-piling body 61 is positioned so as to overlap the mounting plate portion 116 of the outer soil-piling body 81 with a predetermined overlapping area (overlapping region) S1 in side view. The predetermined overlapping area S1 is equal to or less than one-fifth of the area S1+S2 of the inner soil-piling plate portion 72 in side view. In other words, the inner soil-piling plate portion 72 does not overlap with the entire outer soil-piling body 81 by 80% or more, preferably 88% or more, in side view.

[0094] Next, FIG. 14 is a schematic side view showing the positional relationship between the inner mounding body 61 and the outer mounding body 81 in the left-side travel mark erasing section 55 (when the outer mounding body is set in a position on the extended working section side).

[0095] As shown in Figure 14, the front end of the inner soil-collecting plate portion 72 of the inner soil-collecting body 61 is located forward of the rear end of the outer soil-collecting plate portion 117 of the outer soil-collecting body 81 in a side view. The longitudinal length dimension A1 between the front end of the inner soil-collecting plate portion 72 and the rear end of the outer soil-collecting plate portion 117 in a side view is one-third or less of the longitudinal length dimension A2 of the outer soil-collecting plate portion 117 in a side view (the distance between the front and rear ends of the outer soil-collecting plate portion). In other words, it is approximately 33% or less, preferably 28% or less. Note that dimension A1 is, for example, approximately 70 mm, and dimension A2 is, for example, approximately 260 mm.

[0096] Next, the operation of the agricultural work machine 1 will be described.

[0097] For example, as shown in Figure 2, when the agricultural implement 1 in a plowed state with the left and right extension working units 12 deployed moves forward in the field as the tractor 2 travels, the central working unit 11 and the left and right extension working units 12 perform plowed work (plowing and leveling work).

[0098] At this time, a groove 6 is formed in the field (such as a water-logged rice field) as the rear wheels 3 of the tractor 2 pass through, but this groove 6 is filled in by piling up soil using the outer piling up means 56 and inner piling up means 57 of the piling up means 55.

[0099] In other words, the soil-removing plate portions 72, 117 of the soil-removing bodies (soil guide bodies) 61, 81, which are set in optimal positions according to the size and position of the rear wheels 3 of the tractor 2, guide and move the soil (mud) from the mounded portion 7 of the field toward the furrow portion 6, thereby backfilling the furrow portion 6 where the tractor has been driven, and as a result, the field is leveled.

[0100] 15, when such agricultural work machine 1 is used for plowing, debris in the soil of mounding portion 7, i.e., straw W such as rice straw, does not get caught on the arc-shaped front end of outer mounding plate portion 117 of outer mounding body 81 even when it comes into contact with the arc-shaped front end, but moves smoothly downward along arc-shaped ends 122, 123 and becomes embedded in the soil. Therefore, there is no risk of soil being accumulated (clogging) in front of outer mounding body 81 due to the straw W being continuously pushed.

[0101] In addition, since there is a space 127 for soil escape (the diagonally shaded area in the figure) below the mounting plate portion 116 of the outer soil-removing body 81 and behind the outer soil-removing plate portion 117, excess soil (including miscellaneous matter such as straw and grass) and water after filling in the trailing edge moves outward in the width direction (outside) of the agricultural implement 1 and escapes, so soil does not stagnate (get clogged) near the rear end of the outer soil-removing body 81 or near the front end of the tillage cover 30.

[0102] Furthermore, as shown in Figure 16(a) (arrows in the figure indicate the movement (flow) of soil; the same applies to Figure 16(b)), in the agricultural work machine 1 of this embodiment (example), the front end of the inner soil-piling plate portion 72 of the inner soil-piling body 61 is located rearward of the rear end of the outer soil-piling plate portion 117 of the outer soil-piling body 81, which is set at a position on the central working unit 11 side (any of the first to fourth positions), in a side view, so there is a large difference between the start timing of soil-piling work by the outer soil-piling plate portion 117 (position shown by dotted line La) and the start timing of soil-piling work by the inner soil-piling plate portion 72 (position shown by dotted line Lb).

[0103] That is, for example, in the case of this embodiment, the timing at which the piling work by the inner soil piling plate section 72 starts (the position indicated by the dotted line Lb) is immediately after (or may be approximately simultaneously with) the timing at which the piling work by the outer soil piling plate section 117 ends (the position indicated by the dotted line Lc). The timing at which the piling work by the inner soil piling plate section 72 ends is the position indicated by the dotted line Ld.

[0104] Therefore, in the front-to-rear direction, after the outer soil-piling plate section 117 has finished piling up soil, the inner soil-piling plate section 72 begins piling up soil, so the soil (including miscellaneous matter such as straw and grass) piled up toward the trench section 6 by the outer soil-piling plate section 117 and the inner soil-piling plate section 72 moves smoothly into the trench section 6, and the soil does not accumulate (block) between the two soil-piling plate sections 72, 117. Furthermore, when a large amount of soil has been piled up in the trench section 6, the soil can be released outward from the space 127 behind the outer soil-piling plate section 117, as shown by the dotted arrow, preventing it from accumulating.

[0105] 16(b), for example, compared to the case shown in Fig. 16(a), the difference between the start timing of the piling work by the inner piling plate section 72' (position indicated by dotted line Lb) and the start timing of the piling work by the outer piling plate section 117' (position indicated by dotted line La) is small, and the difference between the end timing of the piling work by the inner piling plate section 72' (position indicated by dotted line Ld) and the end timing of the piling work by the outer piling plate section 117' (position indicated by dotted line Lc) is also small. In other words, the area over which soil is simultaneously piling up from both piling plate sections 72', 117' to the groove section 6 is large.

[0106] Therefore, in the comparative example, soil accumulates (blocks) in the narrow portion between the two soil gathering plate portions 72' and 117' (portions indicated by circles in the drawing).

[0107] As a result, for example, lumps of soil may form between the two soil-retaining plate sections 72', 117' due to accumulation, which may affect leveling work.In addition, there is a coupler 5 above the inner soil-retaining body 61 on the central side of the central working section 11 in the left-right direction, and soil may become clogged between the inner soil-retaining body 61 and the coupler (mounting section) 5.However, in this embodiment, this does not happen because the inner soil-retaining body 61 does not protrude below the coupler 5.

[0108] This also applies when the outer soil-collecting body 81 is set to a position on the extension working section 12 side (fifth position) as shown in Figure 17.In the comparative example, soil may accumulate (be clogged) in the narrow area between the two soil-collecting plate sections 72', 117' (the area indicated by the circle in the figure), but this does not happen in this embodiment.

[0109] Furthermore, with the agricultural work machine 1 described above, when the outer soil piling body 81 is set to a position (first to fourth positions) on the left-right end side of the central working section 11, the front end of the inner soil piling plate section 72 is located rearward of the rear end of the outer soil piling plate section 117 in a side view. Also, when the outer soil piling body 81 is set to a position (fifth position) on the inner end side of the extended working section 12, the front end of the inner soil piling plate section 72 is located forward of the rear end of the outer soil piling plate section 117 in a side view. In addition, the front-to-back length dimension A1 between the front end of the inner soil piling plate section 72 and the rear end of the outer soil piling plate section 117 in a side view is less than one-third of the front-to-back length dimension A2 of the outer soil piling plate section 117 in a side view. Therefore, regardless of the moisture content or soil volume of the field, for example, soil stagnation (clogging) between the two soil piling plate sections 72, 117 can be prevented, and therefore appropriate soil piling work can be performed, thereby enabling the field to be properly leveled. Furthermore, by making dimension A1 less than one-third of dimension A2, in other words, less than approximately 33%, and preferably less than 28%, soil stagnation can be appropriately suppressed even when the outer soil-retaining body 81 is set at a position on the extension working section 12 side.

[0110] In addition, the inner soil-piling plate portion 72 is positioned so as to overlap the outer soil-piling body 81 (mounting plate portion 116) with a predetermined overlapping area S1 when viewed from the side, and this predetermined overlapping area S1 is less than one-fifth of the area S1+S2 of the inner soil-piling plate portion 72 when viewed from the side (see Figure 13), and since the rear end of the inner soil-piling plate portion 72 is positioned rearward of the front end of the tillage cover portion 30 when viewed from the side, soil can easily be moved outward through the space portion 127 behind the outer soil-piling body 81.

[0111] On the other hand, the front end of the outer soil-piling plate portion 117 of the outer soil-piling body 81 is formed in an arc shape over almost the entire range from the top to the bottom (or even the entire range). Therefore, regardless of, for example, the tilling depth or the amount of soil, it is possible to prevent miscellaneous materials (straw, grass, etc.) from getting caught on the front end of the soil-piling plate portion (soil-piling surface portion) 117, thereby allowing for appropriate soil-piling work and appropriate leveling of the field.Furthermore, even if, for example, pebbles or the like come into contact with the arc-shaped front end of the outer soil-piling plate portion 117, damage or deformation can be prevented by stress distribution.

[0112] In addition, the front end of the outer soil-removing plate portion 117 of the outer soil-removing body 81 has multiple, for example, three arc-shaped ends 121, 122, 123 positioned consecutively with the radius of curvature increasing the lower they are located, so that debris can be smoothly guided and moved along the arc direction and debris can be appropriately prevented from getting caught.

[0113] Furthermore, there is a space 127 below the mounting plate 116 of the outer soil-retaining body 81 for releasing soil, so soil containing impurities can be released to the outer side, preventing soil from accumulating (clogging).

[0114] Furthermore, the outer mounding bodies 81 can be selectively set to multiple positions on the central working section 11 side, i.e., four positions (first to fourth positions) and one position on the extended working section 12 side, which makes it easier for the worker to determine the optimal position for the outer mounding bodies 81, unlike in the past, thereby reducing the burden on the worker. Moreover, heavy items such as front pipes (square pipes) that were previously required are no longer necessary, which also makes it possible to reduce the weight of the agricultural work machine 1.

[0115] 11, the outer soil-removing body 81 may not be limited to the one shown in Fig. 11, and may be, for example, one in which the outer soil-removing plate portion 117 does not have the slight linear end portion 110 at the front end, and the front end of the outer soil-removing plate portion 117 is composed only of three consecutive arc-shaped ends 121, 122, 123 with different radii of curvature. In other words, the entire range from the top to the bottom of the front end of the outer soil-removing plate portion 117 may be formed in an arc shape.

[0116] Furthermore, the outer mounding body 81 may be, for example, as shown in Fig. 18, in which the straight end 110 in Fig. 18 has a longer vertical length dimension a1 than the straight end 110 in Fig. 11, and the first arc-shaped end 121 in Fig. 18 has a shorter radius of curvature R1 than the first arc-shaped end 121 in Fig. 11 (the other configurations are the same). The vertical length dimension a1 of the straight end 110 in Fig. 18 is "approximately 43 mm", which is less than one-fifth the vertical length dimension a2 (approximately 225 mm) of the front end of the outer mounding plate portion 117.

[0117] Furthermore, the outer soil mounding body 81 may be, for example, as shown in Figure 19. In the outer soil mounding body 81 shown in Figure 19(a), a space 127 for releasing soil, which is generally rectangular in side view, is cut out and formed on the underside of the mounting plate 116. In the outer soil mounding body 81 shown in Figure 19(b), a space 127 for releasing soil, which is generally rectangular in side view, is opened and formed on the underside of the mounting plate 116.

[0118] Furthermore, the configuration is not limited to the one described above in which the front end of the one side soil piling portion is located further rearward than the rear end of the other side soil piling portion when viewed from the side, and for example, the configuration may be such that the front end of the one side soil piling portion coincides with the rear end of the other side soil piling portion when viewed from the side.If this configuration is used, the timing at which the soil piling work by the one side soil piling portion starts and the timing at which the soil piling work by the other side soil piling portion ends will be simultaneous.

[0119] Furthermore, for example, regardless of whether the outer soil-piling body is set (positioned) at a position on the working section side or on the extended working section side, the front end of the inner soil-piling body may be configured to coincide with the rear end of the outer soil-piling body when viewed from the side, or to be positioned further rearward than its rear end.

[0120] On the other hand, agricultural working machines are not limited to folding working machines with a foldable three-part structure (a configuration having a central working section and left and right extended working sections), but may be configured, for example, to have a working section that is connected to a running vehicle and an extended working section that is provided at only one of the left and right ends of this working section, or may be configured as a non-foldable structure (such as a single-arm harrow or rotary) that does not have an extended working section and only has a working section that is connected to a running vehicle as a working section that performs tilling work.

[0121] Furthermore, the leveling body that performs the ground leveling work is not limited to one having a first ground leveling member and a second ground leveling member, but may have, for example, only the first ground leveling member, or may be configured such that the ground leveling body is attached to the rear end of the tilling cover part of the machine body via an elastic plate such as a rubber plate. Also, the configuration may be such that the one side soil piling part and the other side soil piling part do not overlap. [Explanation of symbols]

[0122] 1 Agricultural machinery 2 Tractor as a traveling vehicle 6 Groove (groove left by a moving vehicle) 11 Central working section 12 Extension work section 30,40 Tillage cover 61 Inner earthwork body, which is one side earthwork body 72 Inner soil-reducing plate part on one side 81 The outer earth-removing body, which is the other side earth-removing body 117 The outer soil-raising plate part which is the other side soil-raising part A1 The length in the front-to-back direction between the front end of the inner soil-retaining board and the rear end of the outer soil-retaining board A2 Front-to-rear length of outer soil-retaining board S1: Predetermined overlap area S2 Area of ​​inner soil-retaining board

Claims

1. An agricultural work machine coupled to a traveling vehicle, a one-side earth-piling body and an other-side earth-piling body that perform an earth-piling operation to pile up soil on the groove portion side of the travel trail of the traveling vehicle; The one-side earth-piling body has a one-side earth-piling portion that performs earth-piling work, The other-side earth-piling body has an other-side earth-piling part that performs earth-piling work, The front end of the one-side soil-piling portion is aligned with the rear end of the other-side soil-piling portion in a side view, or is located rearward of the rear end of the other-side soil-piling portion. Agricultural machinery characterized by:

2. An agricultural work machine coupled to a traveling vehicle, a one-side earth-piling body and an other-side earth-piling body that perform an earth-piling operation to pile up soil on the groove portion side of the travel trail of the traveling vehicle; The one-side earth-piling body has a one-side earth-piling portion that performs earth-piling work, The other-side earth-piling body has an other-side earth-piling part that performs earth-piling work, The front end of the one-side soil-piling portion is located forward of the rear end of the other-side soil-piling portion in a side view, The longitudinal length dimension between the front end of the one-side soil piling portion and the rear end of the other-side soil piling portion in a side view is one-third or less of the longitudinal length dimension of the other-side soil piling portion in a side view. Agricultural machinery characterized by:

3. The overlapping area between the one side soil piling portion and the other side soil piling body in a side view is one-fifth or less of the area of ​​the one side soil piling portion in a side view.

2. The agricultural implement according to claim 1.

4. The rear end of one side of the soil-pile section is located behind the front end of the tillage cover section in a side view.

4. The agricultural machine according to claim 1, wherein the first and second axes are parallel to each other.

5. The one-side soil-removing body is an inner soil-removing body located on the left-right central side of the agricultural work machine, The other side mounding body is an outer mounding body located on the outer side of the inner mounding body.

4. The agricultural machine according to claim 1, wherein the first and second axes are parallel to each other.

6. An agricultural work machine coupled to a traveling vehicle, a working unit coupled to the traveling vehicle; an extension working section provided on the working section; An inner soil-piling body having an inner soil-piling part located on the left-right central side of the working part and performing soil-piling work on the groove side of the travel trail of the traveling vehicle; an outer soil-piling body having an outer soil-piling portion that is located on the outer side of the inner soil-piling body and that performs soil-piling work on the groove side of the travel trail of the traveling vehicle; When the outer soil-collecting body is set at a position on the left-right end side of the working unit, the front end of the inner soil-collecting part coincides with the rear end of the outer soil-collecting part in a side view, or is located rearward of the rear end of the outer soil-collecting part, When the outer soil-piling body is set at a position on the inner end side of the extension working section, the front end of the inner soil-piling section is located forward of the rear end of the outer soil-piling section in a side view. Agricultural machinery characterized by:

7. When the outer soil-collecting body is set at a position on the left and right end side of the working part, the inner soil-collecting part and the outer soil-collecting part are positioned so as not to overlap in a side view.

7. The agricultural implement according to claim 6.

Images