JP2010011750A - Farm working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farm working machine capable of conducting proper tilling and ground-leveling operations. <P>SOLUTION: The farm working machine 1 includes a machine body 11 joined to the rear part of a tractor 2 vehicle body, wherein the machine body 11 has a pair of right and left stand holders 41. The machine body 11 includes a tilling unit for conducting tilling operations and a ground leveler 31 for conducting ground-leveling operations behind of the tilling unit. Each of the stand holders 41 is detachably fitted with an earthing-up unit 51. The earthing-up unit 51 functions to bring mound soil to tire trace recessed parts 9 and embed it as before in front of the tilling unit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a farm work machine that is connected to a traveling vehicle having a vehicle body and a traveling tire rotatably provided on the vehicle body and moves in a field by traveling of the traveling vehicle.

  Conventionally, as this type of agricultural machine, for example, one described in Patent Document 1 below is known.

This conventional farm work machine is a machine body connected to the rear part of a vehicle body of a traveling vehicle such as a tractor capable of running on a farm field, a tiller body that is provided on the machine body and is configured by a tillage shaft and a tilling claw, etc. It is provided with a leveling body which is provided on the machine body and is composed of a leveling plate, a rake and the like and which performs leveling work behind the tillage body.
JP-A-8-56422

  However, in the above conventional farm work machines, depending on the soil quality of the field, it will be affected by the soil climbing part and the tire mark recess formed on the surface of the field due to the passing of the tire of the traveling vehicle such as a tractor, etc. Leveling work may not be performed.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform suitable tillage work.

  A farm work machine according to claim 1 is a farm work machine that is connected to a traveling vehicle having a vehicle body and a traveling tire rotatably provided on the vehicle body, and moves in the field by traveling of the traveling vehicle. An airframe having a holder and connected to the rear part of the vehicle body of the traveling vehicle, a tillage body provided on the airframe for performing the tilling work, and a ground leveling work provided on the airframe for performing the leveling work behind the tillage body A tire mark recess formed on the surface of the field by passing the tire through the soil and the soil of the uphill portion formed on the surface of the field by passing the tire in front of the tillage body and detachably attached to the stand holder portion It is equipped with a soil gathering body that comes close to.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the mulching body is detachably attached to the stand holder part of the airframe, and the vertical axis in the vertical direction is centered on the attachment part. And an earthing portion attached so as to be capable of adjusting the rotation.

  The farm work machine according to claim 3 is the farm work machine according to claim 2, wherein the earthing part is a longitudinal support member whose base end part is attached to the attachment part so as to be rotatable about the vertical axis in the vertical direction. And a bar-like member for earthing attached to the tip of the support member.

  The farm machine according to claim 4 is the farm machine according to any one of claims 1 to 3, wherein the machine body has a pair of left and right stand holder parts, and the earthing body is detachable from the respective stand holder parts. Each of the pair of left and right mulch members is attached to each of the left and right dirts, and is formed on the surface of the field by the passage of the corresponding tire. It approaches the recess.

  The farm machine according to claim 5 is the farm machine according to any one of claims 1 to 3, wherein the machine body has a pair of left and right stand holder parts, and the earthing body is detachable from each of the stand holder parts. Each of the pair of left and right dirt-carrying bodies is attached to each of the left and right dirt-carrying bodies, and both soils of the soil uphill part formed on the field surface by the passage of the corresponding tire and located on both sides of the tire trace concave part are brought close to the tire trace concave part. Is.

  According to the first aspect of the present invention, there is provided a soil collecting body that brings the soil in the soil uplift portion formed on the surface of the field by the passage of the tire in front of the tillage body to the tire mark recess formed on the surface of the field by the passage of the tire. Therefore, the leveling is improved, the proper tilling work can be performed, and the mulcher can be easily detached from the stand holder portion of the machine body.

  According to the invention which concerns on Claim 2, since the earth gathering part of an earth gathering body can be rotationally adjusted with respect to an attaching part, a much more suitable tillage work can be performed.

  According to the invention which concerns on Claim 3, the soil of a soil rising part can be smoothly brought near to a tire trace recessed part with the rod-shaped member of the dirt gathering part of a dirt gathering body.

  According to the fourth aspect of the present invention, in each of the pair of left and right dirt-carrying bodies, it is possible to appropriately bring only one of the soil rising parts located on both sides of the tire mark recess to the tire mark recess. it can.

  According to the fifth aspect of the present invention, in each of the pair of left and right dirt-carrying bodies, it is possible to appropriately bring both soils of the soil build-up portion located on both sides of the tire trace recess to the tire trace recess.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  1 to 3, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to, for example, a rear portion of a tractor 2 that is a traveling vehicle capable of traveling in an agricultural field. This is a scraping machine that performs tillage leveling work (powdering work, earthing work, etc.) while moving forward (in the direction of the arrow in the figure). FIG. 3 shows a state where the farm work machine 1 is supported by a stand 3 with casters for supporting a pair of left and right work machines when not working. Each stand 3 has a stand body 3a and front and rear casters 3b attached to the stand body 3a.

  As shown in FIG. 7, the tractor 2 includes a vehicle body 5 that is a vehicle body, a pair of left and right front wheels 6 that are rotatably provided at the front portion of the vehicle body 5, and a left and right shaft 8 that is centered on the rear portion of the vehicle body 5 And a pair of left and right rear wheels (traveling tires) 7 provided rotatably. Although not shown, the vehicle body 5 includes an engine, a PTO shaft, a driver's seat, and the like, and a three-point link portion that is a work implement lifting support means at the rear portion. The three-point link part is configured by a top link and a pair of left and right lower links.

  Then, when the front wheel 6 and the rear wheel 7 rotate based on the power from the engine and the tractor 2 travels through the field, two parallel wheels are passed through the rear wheel 7 on the surface of the field as shown in FIG. A concave groove-like tire mark recess 9 is formed, and a total of four soil uplift parts 10 are formed on the left and right sides so as to be located on both sides of each tire mark recess 9.

  As shown in FIGS. 1 and 2, the farm work machine 1 includes a machine body 11 that is detachably connected to a three-point link portion of the vehicle body 5 of the tractor 2.

  The machine body 11 has a main frame portion 12 which is long in the left-right direction and has a substantially cylindrical shape, and a gear box portion 13 is provided at the center in the longitudinal direction of the main frame portion 12. An input shaft 14 in a substantially front-rear direction is rotatably provided in the gear box portion 13 via a bearing (not shown), and the front end side of the input shaft 14 is connected to the PTO shaft of the vehicle body 5 of the tractor 2 with a universal joint and a transmission shaft. Etc. are connected through. A transmission shaft (not shown) is connected to the rear end side of the input shaft 14 via a bevel gear or the like, and this transmission shaft is rotatably disposed in the main frame portion 12.

  Further, a three-point connecting portion (not shown) that is a traveling vehicle connecting portion projects forward from the central portion in the longitudinal direction of the main frame portion 12, and this three-point connecting portion is the 3 of the vehicle body 5 of the tractor 2. It is connected to the point link part. The three-point connecting portion is composed of a top mast, a lower arm, and the like.

  Further, an upper portion of a chain case portion 15 which is a slightly long and box-like transmission case portion is attached to the left end portion, which is one longitudinal end portion of the main frame portion 12, in the chain case portion 15. A chain and a sprocket (not shown) that receive power from the transmission shaft in the main frame portion 12 are disposed. On the other hand, an upper portion of a bracket portion 16 that is a plate-like support frame portion that is slightly longer in the vertical direction is attached to the right end portion that is the other longitudinal end portion of the main frame portion 12.

  Between the lower part of the chain case part 15 and the lower part of the bracket part 16, which are spaced apart from each other, there is rotatably provided a rotary tiller 21 that performs the tilling work while rotating in a predetermined direction. The cultivating body 21 includes a cultivating shaft 22 that is a horizontal rotating shaft that receives power from the chain in the chain case portion 15 and rotates. The cultivating body 21 is attached to the cultivating shaft 22 and rotates together with the cultivating shaft 22 to perform the cultivating work. The tillage claw 23 is provided. The tilling shaft 22 is rotatably supported at the lower end of the chain case 15 at the left end, which is one end in the axial direction, and is supported at the lower portion of the bracket 16 at the right end, which is the other end in the axial direction. ing.

  Further, the upper part of the cultivating body 21 is covered with an upper cover part 26, and the left and right side parts of the cultivating body 21 are covered with left and right side cover parts 27.

  A leveling body 31 that performs leveling work (leveling work) behind the tillage body 21 is provided at the rear end of the upper cover part 26 so as to be rotatable in the vertical direction. The leveling body 31 is attached to the rear end portion of the upper cover portion 26 of the machine body 11 via a rubber elastic plate 32 so as to be pivotable in the vertical direction, and is a first longitudinally long in the horizontal direction for performing leveling work in an inclined posture. It has a leveling plate (level plate) 33 and a second leveling plate (rake) 34 that is attached to the first leveling plate 33 so as to be pivotable in the vertical direction and is horizontally leveled to perform leveling work in the horizontal direction. ing. Further, an extended leveling plate (extended rake) 35 as an auxiliary leveling body is attached to both ends in the longitudinal direction of the second leveling plate 34 so as to be rotatable around a support shaft 36 in the front-rear direction. 35 is placed in the storage state located on the second leveling plate 34 by turning in one direction around the support shaft 36, and the second leveling plate 34 is turned in the other direction around the support shaft 36. This is a work state in which the ground leveling work is carried out by being positioned alongside the second leveling plate 34 on the outer side. Furthermore, spring rakes 37 and 38 made of a plurality of elastic rods for embedding miscellaneous materials such as firewood in the soil are attached to the leveling body 31. Further, the airframe 11 and the first leveling plate 33 are connected by the first connecting means 39, and the airframe 11 and the second leveling board 34 are connected by the second connecting means 40.

  On the other hand, the left side cover portion 27 is attached to the chain case portion 15, and the right side cover portion 27 is attached to the bracket portion 16. Each side cover portion 27 includes a front side plate 27a and a rear side plate 27b, and a stand holder portion 41 is provided on the outer surface side of the front side plate 27a. That is, the body 11 has a pair of left and right stand holder portions 41 at both ends in the left-right direction, which are both ends in the longitudinal direction.

  Each stand holder portion 41 is constituted by, for example, a U-shaped frame portion 42 that is elongated in the up-down direction and opens in an outward direction and has a substantially U-shaped cross section, and the U-shaped frame portion 42 is spaced apart in the up-down direction. A plurality of holes (not shown) arranged in a row are formed, and a stop pin 43 is detachably attached to a hole selected from the plurality of holes.

  As shown in FIG. 3, the stand 3 is detachably attached to both stand holder portions 41 of the machine body 11 by the retaining pins 43 when not working, and both the machine body 11 are worked during work as shown in FIGS. The earth retaining body 51 is attached to the stand holder portion 41 so as to be detachable by a stop pin 43, respectively.

  Here, the mulching body 51 passes the rear wheel 7 through the soil of the soil uphill portion 10 formed on the surface of the field by the passage of the rear wheel 7 in front of the cultivating body 21 at the time of the tilling work by the farm machine 1. To close the tire trace recess 9 formed on the surface of the field. That is, for example, each of the pair of left and right mulch bodies 51 is a soil of only one of the soil uplift portions 10 formed on the field surface by passing through the corresponding rear wheel 7 and positioned on the left and right sides of the tire mark recess 9, for example, The soil of only the soil build-up portion 10 located on the outer side of the tire mark recess 9 is brought close to the adjacent tire mark recess 9 and backfilled.

  As shown in FIGS. 1, 2, and 4, each mulcher 51 includes an attachment portion 52 that is detachably attached to the stand holder portion 41, and a vertical axis A in the vertical direction at the front end portion of the attachment portion 52. As a center, it has the earthing part 53 attached so that rotation adjustment was possible.

  The mounting portion 52 has a vertically long vertical portion 54 that can be fitted into the U-shaped frame portion 42 of the stand holder portion 41, and a longitudinal direction that protrudes forward from the lower end portion of the vertical portion 54. The earthing | feeding-up part 53 is attached to the front-end part of this horizontal part 55 so that rotation adjustment is possible centering | focusing on the vertical axis A. The vertical portion 54 is formed with a plurality of holes (not shown) lined up and down in the vertical direction, and the stopper pin 43 is provided to the hole of the vertical portion 54 and the hole of the U-shaped frame portion 42 that coincide with each other. The attachment portion 52 is attached to the stand holder portion 41 by being inserted.

  Further, as shown in FIG. 4, the horizontal portion 55 of the mounting portion 52 has a columnar portion 56 with a vertical axis A passing through the axis at the front end portion, and a substantially disc on the upper surface of the columnar portion 56. A lower engagement member 57, which is a one-side engagement member, is fixed. That is, the attachment portion 52 has the lower engagement member 57 on the upper surface of the front end portion.

  As shown in FIGS. 5 and 6, the lower engagement member (lower clutch) 57 is formed with a through hole 58 penetrating in the upper and lower surfaces in the center portion, and in the upper surface portion in the radial direction. Are formed side by side in the circumferential direction. An upper engagement member (upper clutch) 61, which is a substantially disc-shaped other engagement member that is detachably engaged with the lower engagement member 57, has the same shape as the lower engagement member 57. In the center portion, a through hole 62 is formed so as to penetrate through the upper and lower surfaces, and a plurality of radially extending engagement projections 63 that detachably engage with the engagement recess 59 are provided on the lower surface portion. It is formed side by side in the direction.

  On the other hand, the earthing portion 53 is a support member 65 that is a longitudinal arm member whose rear end portion, which is a base end portion, is attached to the front end portion of the attachment portion 52 so as to be rotatable about the vertical axis A in the vertical direction. And a front end portion of the support member 65 which is attached to the front end portion of the support member 65 so as to be rotatable about a vertical axis B in the vertical direction. And a rod-like member 66 for soil gathering that is guided to the soil.

  For example, as shown in FIG. 1, the support member 65 is positioned in an inclined state that approaches the tire mark recess 9 toward the front end side in a plan view, and the rod-shaped member 66 extends toward the rear end side in a plan view. 9 is in an inclined state approaching 9. The rear end portion of the rod-shaped member 66 is located on the side edge of the tire mark recess 9.

  The support member 65 has an upper engagement member 61 that engages with the lower engagement member 57 of the horizontal portion 55 of the attachment portion 52 on the lower surface of the rear end portion, and the upper engagement member at the rear end portion of the support member 65. A through hole 67 communicating with the through hole 62 of 61 is formed through the upper and lower surfaces.

  A vertical support shaft 68 protruding from the upper surface of the cylindrical portion 56 of the horizontal portion 55 of the mounting portion 52 is inserted into the through holes 58, 62, 67. The bolt 70 is screwed into the screw hole 69 formed in the support shaft 68 with the vertical axis A passing through the axis so that the rear end portion of the support member 65 is the front end portion of the horizontal portion 55 of the mounting portion 52. The vertical axis A, that is, the pivot 68 is attached so as to be adjustable. If the engagement between the lower engagement member 57 and the upper engagement member 61 is released by loosening the bolt 70, the fixing of the support member 65 to the attachment portion 52 is released, and the support member 65 is attached to the attachment portion 52. Thus, it can be rotated about the vertical axis (support shaft 68) A.

  Further, the support member 65 has a cylindrical portion 71 whose longitudinal axis B passes through the axis at the front end, and a nut 72 is fixed to the cylindrical portion 71 and corresponds to the nut 72 of the cylindrical portion 71. A bolt insertion hole 73 is formed in the portion to be formed. Then, the bolt 74 is screwed into the nut 72 and the tip of the bolt 74 is inserted into the bolt insertion hole 73 so as to press-contact the outer peripheral surface of the rod-shaped member 66 in the cylindrical portion 71, whereby the rod-shaped member 66 is supported by the support member 65. Is attached to the front end of the main shaft so as to be rotatable about the vertical axis B. If the bolt 74 is loosened to release the pressure contact between the tip of the bolt 74 and the rod-shaped member 66, the rod-shaped member 66 is released from being fixed to the support member 65, and the rod-shaped member 66 has a vertical axis B with respect to the support member 65. It can be rotated as a center.

  As shown in FIG. 4, the rod-like member 66 is formed by bending a single metal round rod 75 having a substantially circular cross section at a plurality of locations. That is, for example, the rod-shaped member 66 includes a vertical rod portion 76 fitted into the cylindrical portion 71 of the support member 65 and fixed to the inner peripheral surface of the cylindrical portion 71 with a bolt 74, and the vertical rod portion 76. A horizontal bar portion 77 projecting forward from the lower end portion, a first inclined rod portion 78 projecting obliquely rearward and downward from a front end portion of the horizontal rod portion 77, and a rear end of the first inclined rod portion 78 And a second inclined rod portion 79 projecting obliquely downward from the portion.

  The inclination angle α of the first inclined rod portion 78 with respect to the horizontal direction is, for example, approximately 45 degrees, and the inclination angle β of the second inclined rod portion 79 with respect to the horizontal direction is, for example, approximately 5 degrees. The inclination angle α is larger than the inclination angle β of the second inclined rod portion 79. Note that the rod-like member 66 may have one inclined rod portion in which the inclination angle α of the first inclined rod portion 78 and the inclination angle β of the second inclined rod portion 79 are the same.

  Next, a case where the farm work machine 1 performs the tilling work will be described.

  When the farming machine 1 moves forward based on the traveling of the tractor 2 with the earth retaining body 51 attached to the pair of left and right stand holder portions 41 of the body 11, the cultivation work is performed by the cultivation claws 23 of the cultivation body 21. In the rear of the cultivating body 21, leveling work, that is, leveling work is performed by the first leveling plate 33, the second leveling plate 34, and the extended leveling plate 35.

  At this time, in front of the cultivating body 21, a pair of left and right digging bodies 51 is used to perform digging work. That is, the first inclined rod portion 78 and the second inclined rod portion 79 of the rod-like member 66 of the earth collecting portion 53 of each earth gathering body 51 are located on the outer side of the tire mark concave portion 9 and adjacent to the tire mark concave portion 9. The soil of the soil build-up portion 10 is crushed and brought toward the tire trace recess 9 and is backfilled in the tire trace recess 9.

  And according to such a farming machine 1, the soil of the soil rising part 10 formed in the field surface by the passage of the rear wheel 7 of the tractor 2 in front of the cultivating body 21 is transferred to the field surface by the passage of the rear wheel 7. Since the dirt gathering body 51 that approaches the formed tire mark recess 9 is provided, the leveling is improved and an appropriate tillage work can be performed.

  Further, the attaching portion 52 of the mulching body 51 can be easily attached to and detached from the stand holder portion 41 of the machine body 11 by attaching and detaching the retaining pin 43. For example, when the non-working is performed, the detaching body 51 is removed and the stand 3 is attached. 3, the agricultural machine 1 can be supported, and the agricultural machine 1 can be easily moved in a warehouse or the like.

  Further, the support member 65 of the earth-loading portion 53 of the earth-shifting body 51 can be rotated and adjusted about the vertical axis A with respect to the mounting portion 52, and the bar-like member 66 of the earth-shifting portion 53 Since rotation adjustment can be performed as the center, it is possible to cope with various tractors 2 having different sizes, and more appropriate tillage work can be performed.

  In addition, the rod-like member 66 of the earth gathering portion 53 of the earth gathering body 51 can smoothly bring the soil of the soil build-up portion 10 to the tire mark recess 9. When the depth of entering the soil based on the change in the vertical position of the soil, there is a problem that the amount of soil changes greatly, but when you do the soiling with the rod-shaped member 66, such a problem does not occur, when entering deeply There is little difference in the amount of soil when entering shallowly, and appropriate work can be performed regardless of the vertical position of the agricultural working machine 1.

  For example, as shown in FIG. 8, the length of the rod-like member 66 of the dirt gathering body 51 may be increased and the rod-like member 66 may be positioned so as to cross the tire mark recess 9. In this configuration, the soil of the uphill portion 10 located on the outer side which is one side of the tire mark recess 9 on the front end side of the rod-shaped member 66 is brought back to the tire mark recess 9 and backfilled. On the rear end side, the soil of the earth rising portion 10 located on the inner side which is the other side of the tire mark recess 9 is crushed and made substantially flat.

  Further, in the above-described embodiment, each mulcher 51 can be rotated and adjusted around the longitudinal axis A at one attachment portion 52 detachably attached to the stand holder portion 41 and the front end portion of the attachment portion 52. In the above description, the structure including one mulch portion 53 attached to each other, that is, the structure in which each mulch body 51 includes one rod-like member 66 has been described. For example, as illustrated in FIGS. A single attachment portion 52 detachably attached to the stand holder portion 41, and two earthing portions 53 having the same configuration attached to the front end portion of the attachment portion 52 so as to be rotatable about the vertical axis A That is, a configuration in which each mulcher 51 includes two rod-like members 66 may be used.

  Then, as shown in FIG. 10, the two rod-shaped members 66 are arranged in, for example, a substantially C shape, and one rod-shaped member 66 is located in the soil rising portion 10 located outside the tire mark recess 9. The other rod-shaped member 66 brings back the soil of the earth rising portion 10 located inside the tire mark recess 9 and backfills the tire mark recess 9. That is, the agricultural machine 1 shown in FIG. 10 includes both the pile up portions 10 that are formed on the surface of the farm field by passing through the rear wheels 7 to which each of the pair of left and right mulchers 51 corresponds and located on both sides of the tire mark recess 9. The soil is brought back to the tire mark recess 9 and backfilled.

  For example, as shown in FIG. 11, two rod-like members 66 are arranged in parallel with each other using support members 65 having different lengths, and one rod-like member 66 is one side of the tire mark recess 9. The soil of the earth rising part 10 located on the outer side is brought back to the tire mark concave part 9 and backfilled, and the other rod-like member 66 of the earth rising part 10 located on the inner side, which is the other side of the tire mark concave part 9. The soil may be crushed and flattened.

  Furthermore, although not shown, for example, the structure in which each mulcher 51 has three or more rod-like members 66 may be used.

  Further, the rod-shaped member 66 is not limited to the shape shown in FIG. 4 or the like, and may be, for example, a substantially L-shaped member composed of only a vertical rod portion and a horizontal rod portion protruding rearward from the lower end portion of the vertical rod portion. Good.

It is a top view of the agricultural working machine which concerns on one embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a side view at the time of stand attachment of an agricultural working machine same as the above. It is a side view of the dirt gathering body of an agricultural working machine same as the above. It is a side view of the clutch part of the same bunker. It is a top view of the lower clutch of a clutch part same as the above. It is sectional drawing which shows the earth rising part and tire trace recessed part which are formed by passage of the rear wheel of a tractor. It is a principal part top view of the agricultural working machine which concerns on other embodiment of this invention. It is a principal part side view of the agricultural working machine which concerns on other embodiment of this invention. It is a principal part top view of an agricultural working machine same as the above. It is a principal part top view of the agricultural machine concerning other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farm work machine 2 Tractor which is a traveling vehicle 5 Car body 7 Rear wheel which is a tire 9 Tire trace recessed part
10 Soil climbing part
11 Airframe
21 Tillage
31 Leveling body
41 Stand holder
51 mulcher
52 Mounting part
53 Doughing part
65 Support member
66 Rod-shaped member A Vertical axis

Claims (5)

A farm machine connected to a traveling vehicle having a vehicle body and a traveling tire rotatably provided on the vehicle body, and moving a farm field by traveling of the traveling vehicle,
An airframe having a stand holder portion and connected to the rear portion of the vehicle body of the traveling vehicle;
A plowing body that is provided on this machine and performs plowing work;
A leveling body that is provided in the machine body and performs leveling work behind the tillage body;
Soil detachment that is detachably attached to the stand holder part, and that brings the soil of the soil build-up part formed on the surface of the field by the passage of the tire in front of the tillage body to the tire mark recess formed on the surface of the field by the passage of the tire A farm machine characterized by comprising a body. The shredder is
An attachment part detachably attached to the stand holder part of the aircraft,
The farm working machine according to claim 1, further comprising an earthing portion attached to the attachment portion so as to be rotatable about a vertical axis in the vertical direction. The earth gathering part
A longitudinal support member whose base end portion is attached to the attachment portion so as to be rotatable and adjustable about a vertical axis in the vertical direction; and
The agricultural working machine according to claim 2, further comprising a rod-like member for earthing attached to a tip portion of the support member. The fuselage has a pair of left and right stand holder parts,
The mulcher is detachably attached to each of the stand holder portions,
Each of the pair of left and right dirt-carrying bodies draws only one of the soil rising parts formed on the field surface by passing through the corresponding tire and located on both sides of the tire trace concave part to the tire trace concave part. The agricultural machine according to any one of claims 1 to 3. The fuselage has a pair of left and right stand holder parts,
The mulcher is detachably attached to each of the stand holder portions,
Each of the pair of left and right dirt-carrying bodies draws both soils of the soil uplift part formed on the field surface by passing of the corresponding tire and located on both sides of the tire trace concave part to the tire trace concave part. Item 4. The agricultural machine according to any one of Items 1 to 3.

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