Puddling work machine

Abstract

To provide a puddling work machine that levels the soil, which is preliminarily roughly leveled by a ridging body, with a harrowing part and preferably finishes a puddling work.SOLUTION: A puddling work machine 1 includes: a harrowing part 3 for harrowing the soil by rotatably driving a tillage tine with the advancement of a travelling machine body 1; and a ridging body 42 disposed on a forward side in a travelling direction of the harrowing part 3 and capable of moving the soil by pushing out the soil laterally. The ridging body 42 includes: a ridging body 42 rotatable in a horizontal direction in response to resistance from the soil incoming from the travelling direction; and a ridging body 43 that does not rotate with the resistance from the soil incoming from the travelling direction.SELECTED DRAWING: Figure 18

Description

[Technical Field]

[0001] This invention relates to a puddling implement. More specifically, a puddling implement is a puddling implement that roughly levels the soil in advance by a puddling body. This relates to a tilling machine that uses a soil crushing section to level out flat, leveled soil. [Background technology]

[0002] The tiller tines attached to the traveling machine body rotate to till and level the field. An example of a working machine that performs plowing work is the invention described in Patent Document 1. As the machine passes, it piles up soil in the grooves formed on the field surface by the tires, etc. This soil-collecting plate collects soil in the grooves, improving the leveling performance. It is something that can be done. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-208869 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to perform the plowing work quickly and in a short time, the running speed of the traveling machine, that is, the working speed, On the other hand, it is necessary to increase the soil quality, the water content of the soil, and the working conditions. Depending on the size of the farm field, there are situations where it is not possible to increase the work speed. The structure of the soil-collecting plate provided in the work machine described in is such that it can respond to changes in work speed. When the working speed is changed, the effect of piling up soil, that is, the effect of erasing the driving traces, is not fully realized. There are issues that cannot be fully addressed.

[0005] Therefore, the present invention has been made in view of the above problem, and even if the speed conditions change, To provide a plow working machine capable of exerting a soil-piling effect. [Means for solving the problem]

[0006] This invention is A soil crushing unit that crushes soil by rotating the tillage tines as the traveling machine body moves forward; and a soil-collecting body that is arranged on the front side of the direction of travel of the soil-crushing unit and is capable of pushing and moving soil to the side, The soil-collecting body is a soil-collecting body that can rotate horizontally in response to the resistance of soil pushing in from the direction of travel; A mounding body that does not rotate in response to the resistance of soil pushing in from the direction of travel; A plow farming machine characterized by comprising: relates to.

[0007] The present invention further provides: An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The rotatable soil-collecting body is provided in front of the soil-crushing unit. A plow farming machine characterized by: relates to.

[0008] The present invention further provides: An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The rotatable soil-collecting body is provided in front of the extended soil-collecting section. A plow farming machine characterized by: relates to.

[0009] The present invention further provides: An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The non-rotating soil-collecting body is provided in front of the soil-crushing unit. A plow farming machine characterized by: relates to.

[0010] The present invention further provides: An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The non-rotating soil-collecting body is provided in front of the extended soil-collecting section. A plow farming machine characterized by: relates to. [Effects of the Invention]

[0011] This invention provides a plow work machine that can produce a good finished plow work result because the soil that has been roughly leveled in advance by the soil-collecting body is then leveled by the soil-crushing section. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a front view of a tillage implement according to first to fourth embodiments of the present invention, showing the entirety of the tillage implement as seen from the front in the direction of travel. [Figure 2] 1 is a plan view of a tillage implement according to first to fourth embodiments of the present invention. [Figure 3] 1 is a side view of a tillage implement according to a first embodiment of the present invention, viewed from the left in the direction of travel. [Figure 4] 1 is a bottom view of the plowed soil implement according to the first embodiment of the present invention, showing a partial enlargement of the first to third mounding bodies on the left side in the direction of travel, with the upper part of the drawing showing the front part of the plowed soil implement. [Figure 5] FIG. 2 is a side view of the working surface of the first mounding body on the left side of the tillage implement according to the first embodiment of the present invention, as viewed from the front. [Figure 6] FIG. 2 is a front view of the tillage implement according to the first embodiment of the present invention, viewed from a direction perpendicular to the operating surface of the first mounding body on the left side. [Figure 7] FIG. 2 is a front view of the tillage implement according to the first embodiment of the present invention, viewed from a direction perpendicular to the working surface of the second mounding body on the left side. [Figure 8]FIG. 2 is a side view of the working surface of the second mounding body on the left side of the tillage implement according to the first embodiment of the present invention, as viewed from the front. [Figure 9] FIG. 2 is a front view of the tillage implement according to the first embodiment of the present invention, viewed from a direction perpendicular to the operating surface of the third mounding body on the left side. [Figure 10] FIG. 2 is a side view of the working surface of the third mounding body on the left side of the tillage implement according to the first embodiment of the present invention, as viewed from the front. [Figure 11] 1 is a side view of a plow farming implement according to a second embodiment of the present invention, showing the entire implement as seen from the left side in the direction of travel of the implement. [Figure 12] FIG. 10 is an enlarged perspective view of a mounding body of a tillage implement according to a second embodiment of the present invention. [Figure 13] 10 is a cross-sectional view of a mounding body of a tillage implement according to a second embodiment of the present invention, taken at the fulcrum boss, showing the mounding body (fulcrum pipe) moved upward. FIG. [Figure 14] 10 is a cross-sectional view of a mounding body of a tillage implement according to a second embodiment of the present invention, taken at the fulcrum boss, showing the mounding body (fulcrum pipe) moved downward. FIG. [Figure 15] FIG. 10 is an enlarged front view of a mounding body of a tillage implement according to a second embodiment of the present invention, showing the implement at low speed. [Figure 16] 10 is an enlarged plan view of a mounding body of a tillage implement according to a second embodiment of the present invention, viewed from the fulcrum axis direction, at low speed. FIG. [Figure 17] FIG. 10 is an enlarged front view of a mounding body of a tillage implement according to a second embodiment of the present invention, showing the implement at high speed. [Figure 18] This is an enlarged plan view of the mounding body of the tillage machine according to the second embodiment of the present invention, in which the solid lines depict the mounding body and regulating section at high speed (after rotation), and the dashed double-dashed lines depict the section at low speed (before rotation). [Figure 19] This is an enlarged plan view of the mounding body of the tillage implement according to the third embodiment of the present invention, in which the mounding body shown by the solid line is at low speed and the mounding body shown by the two-dot chain line is at high speed. [Figure 20]10 is an enlarged plan view of a mounding body of a tillage implement according to a fourth embodiment of the present invention, in which the mounding body shown by solid lines is at low speed and the mounding body shown by two-dot chain lines is at high speed. DETAILED DESCRIPTION OF THE INVENTION

[0013] A plow machine according to a first embodiment of the present invention will be described with reference to the drawings. 1 is a tilling machine. A central working body 11 is located in the center of the tilling implement 1 and performs tilling work. The left extension working body 11L is located on the left side of the central working body 11 in the direction of travel, and is foldably attached to the central working body 11 to perform tilling work. 11R is the right extension work body. The right extension work body 11R is located on the right side of the central work body 11 in the direction of travel, can be folded up with the central work body 11, and is used for plowing work.

[0014] Reference numeral 2 denotes a frame. The frame 2 has a pipe frame 22. The pipe frame 22 is a frame that forms the skeleton of the tillage implement 1. Reference numeral 20 denotes a mounting portion. Reference numeral 201 denotes a top link pin. Reference numeral 202 denotes a lower link pin. The mounting portion 20 has a top link pin 201 and a lower link pin 202. These are used to mount the mounting portion 20 to a tractor that tows the tillage implement 1.

[0015] Reference numeral 21 denotes an input case and 211 denotes an input shaft. The input shaft 211 is attached inside the input case 21 and connected to the PTO shaft of the tractor to extract the driving force of the tractor. A top mast 212 is provided on the pipe frame 22. The top mast 212 has a top link pin 201 at its tip. Reference numeral 213 denotes a lower plate. The lower plate 213 is attached to the pipe frame 22. A lower link pin 202 is attached to the tip of the lower plate 213. A transmission case 23 is provided on the pipe frame 22 and outputs the driving force from the input shaft 211 provided on the input case 21.

[0016] A support frame 24 is provided at a position symmetrical to the transmission case 23 with respect to the input case 21, and holds a rotor shaft 31 (described later) below the pipe frame 22. Numeral 25 denotes a fulcrum portion. The fulcrum portions 25 are provided at both ends of the pipe frame 22, and serve as folding and rotating fulcrums for the left extended working body 11L and the right extended working body 11R. One of the fulcrum portions 25 is rotatably connected to a fulcrum frame 41L protruding upward from the left cover body 4L provided on the left extended working body 11L, and the other fulcrum portion 25 is rotatably connected to a fulcrum frame 41R protruding upward from the right cover body 4R provided on the right extended working body 11R.

[0017] Reference numeral 3 denotes a soil crushing unit. The soil crushing unit 3 is provided below the frame 2 and is rotatable to crush the soil in the field. The soil crushing unit 3 is provided on the tillage implement 1 attached to the rear of a traveling machine body such as a tractor, and is located behind the traveling machine body. As the traveling machine body such as a tractor moves forward, the tillage tines 32 provided on the soil crushing unit 3 are rotated to crush the soil. 3L is the left extended soil crushing unit. The left extended soil crushing unit 3L is rotatably attached to the left extended working body 11L on the left side of the soil crushing unit 3 in the direction of travel, and can be folded together with the left extended working body 11L. 3R is the right extended soil crushing unit. The right extended soil crushing unit 3R is rotatably attached to the right extended working body 11R on the right side of the soil crushing unit 3 in the direction of travel, and can be folded together with the right extended working body 11R. A rotor shaft 31 is a rotating shaft that is hung between the lower portions of the transmission case 23 and the support frame 24, and is rotated by the driving force from the transmission case 23. 31L is the left extension-side rotor shaft. The left extension-side rotor shaft 31L is provided on the left side in the direction of travel of the rotor shaft 31. 31R is the right extension-side rotor shaft. The right extension-side rotor shaft 31R is provided on the right side in the direction of travel of the rotor shaft 31. The left extension-side rotor shaft 31L and the right extension-side rotor shaft 31R rotate by the driving force from the transmission case 23.

[0018] Numeral 32 denotes tillage tines. A plurality of tillage tines 32 are attached around the rotor shaft 31 and the left and right extension-side rotor shafts 31L and 31R, respectively, and are driven by the rotation of the rotor shaft 31 and the left and right extension-side rotor shafts 31L and 31R to till the field. The central dog clutch 33 is provided near the transmission case 23 and the support frame 24 at both ends of the soil crushing unit 3. The left extension side of the extension side dog clutch 33L is provided on the right side of the left extension soil crushing section 3L in the direction of travel, and by engaging with the center side of the dog clutch 33, it forms a dog clutch on the left side in the direction of travel. 33R is the right extension of the extension-side dog clutch. The right extension of the extension-side dog clutch 33R is located on the left side of the left extension soil crushing section 3R in the direction of travel and meshes with the center dog clutch 33 to form a dog clutch on the right side in the direction of travel. The dog clutch turns on and off the rotational drive of the rotor shaft 31 and the left extension-side rotor shaft 31L and right extension-side rotor shaft 31R.

[0019] The reference numeral 34 denotes a holding portion. The holding portion 34 is a bearing portion for the rotor shaft 31, and is provided below the transmission case 23 and the support frame 24. The left extension-side holding portion 34L is a bearing portion for the rotor shaft 31L, and is provided in the vicinity of the left extension-side dog clutch 33L at the bottom of the left cover body 4L (described later). The right extension-side holding portion 34R is a bearing portion for the rotor shaft 31R, and is provided in the vicinity of the right extension side 33R of the extension-side dog clutch at the bottom of the right cover body 4R (described later). The holding portion 34, the left extension side holding portion 34L, and the right extension side holding portion 34R each have a bearing and an oil seal therein.

[0020] Reference numeral 4 denotes a cover body. Cover body 4 covers the upper part of the soil crushing section 3. 4L is the left cover body. 4R is the right cover body. The left cover body 4L covers the upper part of the extended soil crushing section left 3L. The right cover body 4R covers the upper part of the extended soil crushing section right 3L. The cover body 4, left cover body 4L and right cover body 4R prevent the soil crushed or tilled by the soil crushing section 3 and extended soil crushing section left 3L and extended soil crushing section right 3R from scattering to the surrounding area. The left fulcrum frame 41L is a member that protrudes upward to attach the left extension working body 11L of the tillage implement 1 so that it can rotate freely relative to the fulcrum part 25, and is an arm that is integrated with the left cover body 4L. The right fulcrum frame 41R is a member that protrudes upward to attach the right extension body 11R of the tillage implement 1 so that it can rotate freely relative to the fulcrum part 25, and is an arm that is integrated with the right cover body 4R.

[0021] Reference numeral 42b denotes a support member that supports the first mounding body 42, which will be described later. The support member 42b of the first mounding body 42 is a member for attaching the first mounding body 42 to the tillage implement 1, and is a plate-like member that is positioned and fixed while curving downward from the lower plate 213. The lower part of the support member 42b is located below the lower end of the cover body 4, and the first mounding body 42 is attached to the lower part of this support member 42b. Reference numeral 43b denotes a support member that supports the second mounding body 43, which will be described later. The support member 43b of the second mounding body 43 is a member for attaching the first mounding body 42 to the tillage implement 1, and is a plate-like member that is arranged and fixed so as to hang downward from each of the two end portions of the front part of the cover body 4. The lower part of the support member 43b is located below the lower end portion of the cover body 4, and the second mounding body 43 is attached to the lower part of this support member 43b.

[0022] Reference numeral 45 denotes a front cover. The front cover 45 is positioned forward of the front ends of the cover body 4, the left cover body 4L, and the right cover body 4R. Furthermore, the lower end of the front cover 45 is positioned below the front ends of the cover body 4, the left cover body 4L, and the right cover body 4R. In the first embodiment, the front cover 45 is positioned in front of the cover body 4. The front cover 45 prevents mud and other debris from scattering forward from between the cover body 4 and the field surface. Reference numeral 46 denotes a stand bracket. The stand bracket 46 is a bracket for placing the tillage implement 1 on a stand (not shown). The stand brackets 46 are arranged at both ends of the front of the cover body 4, and can ensure the stability of the implement when it is stored or moved using a stand (not shown). Numeral 47 denotes a rear soil-piling body. The rear soil-piling body 47 is a plate-shaped member located rearward of the rotor shaft 31, the left extension-side rotor shaft 31L, and the right extension-side rotor shaft 31R in the direction of travel, and is attached to the left cover body 4L or the cover body 4R. The lower end of the rear soil-piling body 47 slopes downward toward the dog clutch center 33, and is located below the dog clutch center 33 in a front view. The rear soil-piling body 47 is located at the rear of the direction of travel of the tillage implement 1, and as the tillage implement 1 travels, it performs soil-piling work by pushing soil that has passed near the left extension-side holding portion 34L and the right extension-side holding portion 34R toward the dog clutch center 33.

[0023] The first mounding body 42 is located in front of the soil crushing section 3 and below the cover body 4, and has a surface located on one side of the width of a rut formed in the field by the traveling machine body, the harrowing implement 1, that slopes rearward as it moves outward relative to the width of the machine body. The first mounding body 42 is installed at the center of the tillage implement 1. 42a is the first working surface. The first working surface 42a is provided on the surface of the first piling body 42, and as the tillage implement 1 moves, the soil that comes into contact with it is sent sequentially along this first working surface 42a toward the rear and the groove, performing piling work. The upper and lower ends of the first working surface 42a are curved forward, preventing the pushed-out soil from going over this curved portion and efficiently sending it toward the groove.

[0024] The second mounding body 43 is located in front of the soil crushing section 3 and below the cover body 4, and the surface located on the other side of the rut is inclined rearward as it moves inward relative to the width of the tillage implement 1, which is the width of the machine body. The second mounding body 43 is installed on the end side of the cover body 4, which is on the outer side of the width of the harrowing implement 1 than the first mounding body 42. The first mounding body 42 and the second mounding body 43 are installed opposite each other across the width of a rut formed in the field by the tillage implement 1, which is a traveling machine body. 43a is a second working surface. The second working surface 43a is provided on the surface of the second soil-piling body 43, and as the tillage implement 1 moves, the soil that comes into contact with it is sent sequentially along this second working surface 43a toward the rear and the groove, thereby carrying out soil-piling work. The upper and lower ends of the second working surface 43a are curved forward, which prevents the pushed-out soil from going over this curved portion and ensures that it is sent efficiently toward the groove.

[0025] The third soil-collecting body 44 is located in front of the soil-crushing section 3 and below the cover body 4, and is disposed on the other side of the rut. The surfaces of the third soil-collecting body 44, which are located on the outer sides of the second soil-collecting body 43 on the left and right in the direction of travel, are inclined rearward as they move inward relative to the width of the harrowing implement 1, which is the width of the machine body. The third mounding body 44 is installed on the end side of the cover body 4 of the tillage implement 1, and further outward in the direction of travel than the second mounding body 43. The third mounding body 44 is attached to a stand bracket 46 with one end extending downward as a support member. The first mounding body 42, the second mounding body 43 and the third mounding body 44 are installed opposite each other across the width of a rut formed in the field by the tillage implement 1, which is a traveling machine body.

[0026] 44a is a third working surface. The third working surface 44a is provided on the surface of the third piling body 44, and as the tillage implement 1 moves, the soil that comes into contact with it is sent sequentially along this third working surface 44a toward the rear and the tread groove, performing piling work. The third working surface 44a is oriented slightly downward compared to the first working surface 42a and the second working surface. That is, as can be seen from Fig. 4, the first action surface 42a and the second action surface 43a face diagonally forward from each other and are not inclined in the vertical direction of the aircraft, which is the depth direction in the drawing. They are parallel to each other only in terms of the vertical inclination component. As can be seen from Fig. 8, the third action surface 44a is inclined downward relative to the second action surface 43a. The line segment at the center of the second action surface 43a and the line segment of the third action surface 44a (not shown; equivalent to the contour line drawn immediately left of the starting point on the right side of the lead line of 44) are not parallel. Therefore, when the soil moves along the surface toward the ruts, it can be sent below the field surface as it moves backward and toward the ruts. Therefore, the soil that has moved along the third operating surface 44a is prevented from floating up to the field surface, so the ruts can be filled in while leveling the field without disturbing it.

[0027] The area of the second action surface 43a of the second soil-piling body 43 is smaller than the area of the first action surface 42a of the first soil-piling body 42, and the area of the third action surface 44a of the third soil-piling body 44 is smaller than the area of the second action surface 43a. The area of the second working surface 43a of the second mounding body 43 is smaller than the area of the first working surface 42a of the first mounding body 42, and the area of the third working surface 44a of the third mounding body 44 is smaller than the area of the second working surface 43a. In other words, the working areas of the first working surface 42a, the second working surface 43a, and the third working surface 44a are set to be different from each other.

[0028] 4, which shows a bottom view, α is a first angle of the first mounding body 42. The first angle α is an angle of the first mounding body 42 with respect to the direction of travel. Similarly, β is the second angle of the second mounding body 43. The second angle β is the angle of the second mounding body 43 with respect to the direction of travel. Similarly, γ is the third angle of the third mounding body 44. The third angle γ is the angle of the third mounding body 43 with respect to the direction of travel.

[0029] In a plan view or a bottom view, the third angle γ, which is the angle between the traveling direction and the third action surface 44a, is larger than the second angle β, which is the angle between the traveling direction and the second action surface 43a, and the first angle α, which is the angle between the traveling direction and the first action surface, is larger than the third angle γ, which is the angle between the traveling direction and the third action surface 44a. In other words, the first angle α, the second angle β, and the third angle γ are set to be mutually different angles.

[0030] As shown in Fig. 2, which is a plan view, and Fig. 3, which is a side view seen from the left side in the direction of travel, the front end of the first mounding body 42 is located rearward of the front end of the second mounding body 43. The second mounding body 43 protrudes in the direction of travel from the first mounding body 42. In reality, the backfilling effect is better if the first mounding body 42 protrudes in the direction of travel, but the first mounding body 42 cannot protrude in the direction of travel to avoid contact with the tires and crawlers of the tractor when the three-point linkage moves up and down.

[0031] The front end of the third soil-removing body 44 is located rearward of the front end of the first soil-removing body 42. In order to capture the flow of soil that overflows from the second soil-removing body 43, the third soil-removing body 44 is installed some distance rearward of the second soil-removing body 43. If the third soil-removing body 44 is installed too far forward of the second soil-removing body 43, the gap between the second soil-removing body 43 and the third soil-removing body 44 will become narrow, and the flow of soil passing through this gap will be poor. The front ends of the first, second and third mounding bodies 42, 43 and 44 protrude forward from the front end of the cover body 4. The first mounding body 42 is located near the center of the cover body 4 in the width direction of the machine body, and the second and third mounding bodies 43, 44 are located at the ends of the cover body 4 in the width direction of the machine body. Before the soil reaches the soil crushing section 3 located behind the front end of the cover body 4, the flow of the soil can be determined and the soil can be sent to the wheel groove in advance.

[0032] The first mounding body 42 is attached to a support member 42b arranged facing downward from the attachment part 20 for attachment to the tillage implement 1, which is the traveling machine body. Reference numeral 46 denotes a stand bracket. The stand bracket 46 is disposed between the second mounding body 43 and the third mounding body 44 in a plan view, and a stand (not shown) can be attached to the stand bracket 46. Reference numeral 34 denotes a holding section. The holding section 34 is located behind the third mounding body 44 and holds the rotation shaft of the soil crushing section 3. The holding section 34 is attached to the lower part of each of the transmission case 23 and the support frame 24.

[0033] A ground leveling body 5 is attached to the rear of the cover body 4 at the rear of the direction of travel of the tillage implement 1 during operation. The ground leveling body 5 levels the field as the implement travels. 5L is a left ground leveling body. The left ground leveling body 5L is attached to the rear of the left cover body 4L and constitutes the left end of the ground leveling body 5 in the direction of travel during work. 5R is the right leveling body. The right leveling body 5R is attached to the rear of the right cover body 4R and constitutes the right end of the leveling body 5 in the direction of travel during work.

[0034] Reference numeral 51 denotes a first soil leveling body. As shown in Figure 2, which is a plan view of the plow farming implement 1 according to the first embodiment of the present invention, the first soil leveling body 51 levels the ground forward of the rear end of the plow farming implement 1. A left first soil leveling body 51L is located at the left end of the first soil leveling body 51 in the direction of travel, and a left first soil leveling body 51R is located at the right end in the direction of travel. 512 is a fulcrum axis. Reference numeral 52 denotes a hinge. The hinge 52 is attached via a fulcrum shaft 512 as a pivot point for vertical rotation of the first leveling body 51, the left first leveling body 51L, and the left first leveling body 51R of the leveling body 5 relative to the cover body 4, the left cover body 4L, and the right cover body 4R.

[0035] A second soil leveling body 56 is provided. As shown in Fig. 2, which is a plan view of the tillage implement 1, the second soil leveling body 56 levels the ground at the rear end side of the first soil leveling body 51 attached to the implement 1. The left second ground leveling body 56L levels the area behind the left cover body 4L located on the left side in the traveling direction. The right second ground leveling body 56R levels the area behind the right cover body 4R located on the right side in the traveling direction. Reference numeral 562 denotes a rotation fulcrum. The rotation fulcrum 562 is provided at the rear end of the first ground leveling body 51, the left first ground leveling body 51L, and the left first ground leveling body 51R, and enables the second ground leveling body 56, the left second ground leveling body 56L, and the right second ground leveling body 56R to rotate up and down relative to the first ground leveling body 51, the left first ground leveling body 51L, and the left first ground leveling body 51R.

[0036] As shown in Table 1, the working surface areas of the first, second, and third mounders 42, 43, and 44 decrease in both forward projected area and actual area in the following order: first mounder 42 > second mounder 43 > third mounder 44. The first mounder 42 has the largest forward projected area and actual area, resulting in a large amount of soil capture and a high soil-accumulating effect at low speeds. The second mounder 43, while smaller in both forward projected area and actual area than the first mounder 42, offers little resistance to the soil pushing in from the direction of travel and can move efficiently along the second working surface 43a, resulting in a high soil-accumulating effect at high speeds. The third mounder 44 assists the second mounder 43 in mounding at high speeds, capturing soil and mud spilling from the front of the second mounder 43 to the sides of the third mounder 44 and moving it toward the center of the working width. The first mounding body 42, the second mounding body 43 and the third mounding body 44 each have different characteristics and roles in different speed ranges.

[0037] The reason why the active area of the second mounding body 43 is smaller than that of the first mounding body 42 in both the forward projected area and the actual area will be explained below. Simply put, if the second mounding body 43 is placed symmetrically across the width of the rut from the first mounding body 42, the amount of soil movement increases, and the soil in the backfilled rut may pile up, especially when the working speed of the tillage implement 1 is increased. To prevent this, the active area of the second mounding body 43, which is placed symmetrically across the width of the rut from the first mounding body 42, is made small in both forward projected area and actual area, and the amount of soil to be backfilled in the rut is adjusted.

[0038] The reason why the active area of the third mounding body 44 is smaller than the active area of the second mounding body 43 in both the forward projected area and the actual area as shown in Table 1 will now be explained. When the working speed of the tillage implement 1 is increased, soil may spill outward from the front end of the second mounding body 43. The third mounding body 44 captures this spilled soil and moves it toward the rut via the rear of the second mounding body 43. Because the third mounding body 44 serves as an auxiliary to the second mounding body 43, the area of the third working surface 44a of the third mounding body 44 is smaller than the area of the second working surface 43a of the second mounding body 43 in both forward projected area and actual area. Conversely, if the area is increased, more soil will be required to fill back into the rut, which can lead to the disadvantage of forming ruts.

[0039] The area of the working surface of the first mounding body 42 and the total area of the working surfaces of the second mounding body 43 and the third mounding body 44 are similar in terms of forward projection area. In terms of actual area, the sum of the second and third pilers 43 and 44 exceeds that of the first piler 42, but by combining the difference in the forward projection area of each piler formed by the action angle of each piler (described below) and the arrangement of each piler, it is possible to achieve optimal pile-up effects even at different speed ranges.

[0040] The size of the first mound 42 will be described. Although the first mounding body 42 can move a large amount of soil, the efficiency of the soil movement may be poor due to the large first angle α (described later) as the mounding body advances, which changes direction toward the ruts, i.e., in the width direction. Specifically, when soil collides with the first working surface 42a of the first mounding body 42 from the front of the moving body, some of the soil tends to escape upward. To receive this soil, the area of the first working surface 42a of the first mounding body 42 is increased, especially toward the top.

[0041] The shape of the first mound 42 will now be described. The upper end of the first working surface 42a of the first mounding body 42 provided on the first mounding body 42 is curved forward. This curvature prevents the soil from moving over the top of the first mounding body, and causes the soil to move forward of the first working surface 42a of the first mounding body 42 and toward the rut. Furthermore, the upper end of the first working surface 42a is inclined downward as it approaches the rut side. The front side of the first working surface 42a of the first mounding body 42, i.e., the side located farther from the rut, has a longer lateral movement distance. This causes the soil to rise up as described above. On the other hand, the rear side of the first working surface 42a of the first mounding body 42, i.e., the side closer to the rut, has a shorter lateral movement distance, so the soil moves toward the rut side before moving upward. Therefore, even if the rut side, i.e., the inner upper end, is inclined downward, problems with soil movement are unlikely to occur.

[0042] The angles of each acting surface will be described. As described above, the first and second mounders 42 and 43 have different working speeds that they are good at, and the angles are set based on this. By making a large angle with the direction of travel, the first mounding body 42 increases its projected area as seen from the front in the direction of travel, allowing it to mound more soil. In the first embodiment, the optimum angle for the first mounding body 42 is 65 degrees, with a suitable angle range of 60 to 70 degrees. If the angle is greater than 70 degrees, soil flow will be poor and the traction resistance of the tillage implement 1 will increase. If the angle is less than 60 degrees, the efficiency of soil movement at low speeds will decrease.

[0043] The angle of the second mounding body 43 with respect to the direction of travel is set smaller than that of the first mounding body 42. In the first embodiment, the angle of the second mounding body 43 is most preferably 45 degrees, and the preferred angle range is 40 to 50 degrees. This is a consideration to improve soil flow even when the traveling speed increases. As the traveling speed of the tillage implement 1 increases, the flow of soil that collides with the first mounding body 42, which has a large angle with respect to the traveling direction, becomes poor, whereas the second mounding body 43, which has a smaller angle with respect to the traveling direction than the first mounding body 42, can improve soil flow compared to the first mounding body 42. In other words, at high speeds, the second mounding body 43 can move a greater amount of soil than the first mounding body 42. As a result, the first mounding body 42 and the second mounding body 43 can ensure the amount of soil to fill the ruts over a wide range of working speeds. Incidentally, the usual speed during puddling work is about 1 to 3 km / h, and the working speed in the example is 1 to 5.5 km / h.

[0044] As shown in Table 1, the third soil-piling body 44 has a small area in both forward projection area and actual area, and therefore has a slightly larger angle than the second soil-piling body 43 to ensure a sufficient forward projection area. In the first embodiment, the optimum angle is 50 degrees, with a preferred angle range of 45 to 55 degrees. The third soil-piling body 44 allows the soil and soil clods to be sent to the soil-crushing unit 3 without passing near the transmission case 23 and support frame 24, which are parts of the tillage tine rotation area, and the holding unit 34 attached to these that holds the soil-crushing unit 3. This prevents a decrease in puddling performance due to poor soil and soil clod crushing.

[0045] To avoid interference with the traveling machine body located in front, the tips of the first, second and third mounding bodies 42, 43 and 44 are set so as not to protrude forward from the tip of the mounting part 20. In addition, because the tips of the first, second and third mounding bodies 42, 43 and 44 protrude forward from the front end of the cover body 4, it is possible to finish moving the soil before it reaches the rotation range of the tillage tines 32, improving soil crushing performance.

[0046] The stand bracket 46 will now be described. The stand bracket 46 is a holding member for attaching a stand (not shown) that allows the tiller to rest on the ground when stored. In particular, when the extension working unit is stored in a folded state, the center of gravity becomes higher, so to ensure stability when the tiller is resting on the ground, it is best to install the stand as wide as possible across the width of the machine. In the first embodiment, stability is ensured by installing the stand at the end of the cover body 4 in the front part of the transmission case 23 and support frame 24. [Table 1]

[0047] A second embodiment of the present invention will be described mainly with reference to Figures 11 to 18. In the second embodiment, a second mounding body 43 having the following configuration is provided in addition to the first embodiment. The first mounding body 42 and the third mounding body 44 may also have the same structure.

[0048] The first, second, and third mounding bodies 42, 43, and 44, including the second mounding body 43, are positioned behind the traveling direction of the tractor, which is the traveling machine body, and ahead of the traveling direction of the soil-crushing unit 3, so that they can move soil into the tracks left by the tractor and erase the tracks. In the second embodiment, the second mounding bodies 43 are provided at both the left and right ends of the cover body 4. In the description of the second embodiment, the second mounding body 43 provided at the left end of the cover body 4 will be used. The second mounding body 43 provided at the right end has a symmetrical shape to the second mounding body 43 provided at the left end, so a description of it will be omitted to avoid redundancy. Furthermore, the second mounding body 43 at the left end of the cover body 4 will be described as forming a track centered in the traveling direction of the tillage implement 1. The first and third mounding bodies 42 and 44 may also have the same structure. The second soil-removing body 43 is positioned at the edge of the ruts, which are traces of running tracks, and moves soil into the ruts to erase the rut marks and level the surface. The upper part of the second soil-removing body 43 is bent so as to be inclined slightly forward, which prevents soil moving along the front of the second soil-removing body 43 from riding up onto the second soil-removing body 43 and moving backward.

[0049] Reference numeral 46 denotes a cover body side protruding piece. The cover body side protruding piece 46 is provided on the cover body 4. The cover body side protruding piece 46 protrudes from the cover body 4 forward in the direction of travel of the tillage implement 1. A mounting base 47 is attached to the front surface of the cover body 4 in the traveling direction. Reference numeral 471 denotes a hole for adjusting the left-right position of the mounting base 47. The mounting base 47 is provided with a plurality of left-right position adjustment holes 471, so that the mounting base 47 can be mounted at a selected left-right position relative to the left and right of the traveling direction. A contact piece 472 is provided facing forward in the direction of travel of the mounting base 47, and can be brought into contact with a restricting piece 64, which will be described later.

[0050] A is the pivot axis. 62 is the fulcrum boss. 61 is the fulcrum pipe. The pivot axis A consists of the fulcrum pipe 61 and the fulcrum boss 62. The fulcrum boss 62 is a cylindrical member whose axial direction faces up and down and is fixed to the front end of the contact piece 472. The fulcrum boss 62 may be mounted directly on the mounting base 47. The fulcrum pipe 61 is mounted on the cylindrical inner diameter of the fulcrum boss 62 and is capable of moving up and down in the axial direction and rotating around the axis. The pivot axis A allows the mounding body (second mounding body 43) mounted integrally on the forward side of the fulcrum pipe 61 to rotate in an approximately horizontal direction. By rotating the mounding body (second mounding body 43), the front projection area of the second mounding body 43 when viewed from the front in the direction of travel can be changed. By selecting the mounting position of the second soil-removing body 43 in the left-right direction of the direction of travel of the pivot axis A, the area of the soil-removing body 43 on both sides of the pivot axis A, on one side of the left-right width in the direction of travel from the pivot axis A and on the other side of the left-right width in the direction of travel from the pivot axis A, can be changed. The pivot axis A allows the second mounding body 43, which is a soil-pile body, to move in the vertical direction by means of the fulcrum boss 62, and can fix the second mounding body 43 at any position in the vertical direction. The pivot axis A and the fulcrum boss 62 can be moved in the left-right width direction relative to the soil crushing section 3 by means of the mounting base 47, allowing the position of the second mounding body 43, which is a soil-pile body, to be changed in the left-right width direction.

[0051] An elastic member 71 biases the second mounding body 43, which is rotatable about the rotation axis A, in one rotation direction. In the second embodiment, the elastic member 71 acts as a tension spring that pulls the end of the second mounding body 43 on the left and right central side of the cover body 4L toward the rear, that is, toward the cover body 4. Reference numeral 64 denotes a regulating body (regulating piece). Reference numeral 472 denotes a contact piece. The contact piece 472 is a plate-shaped member whose base is attached to the attachment base 47, and whose tip facing forward is brought into contact with the regulating body 64. Regulator 64 is a bifurcated member attached to fulcrum pipe 61. Regulator 64 rotates integrally with second mounding body 43, which is a soil-piling body, and restricts the range in which second mounding body 43 can rotate by contacting contact piece 472. In other words, second mounding body 43 can rotate only up to the point where contact piece 472 comes into contact with the space between bifurcated regulator 64.

[0052] Reference numeral 65 denotes a vertical position adjustment hole, 66 an upper collar, and 67 a lower collar. The vertical position adjustment holes 65 are through holes provided in the axial direction of the fulcrum pipe 61. The upper collar 66 and the lower collar 67 are provided on the fulcrum pipe 61 so as to sandwich the fulcrum boss 62 from above and below, and regulate the vertical movement of the fulcrum pipe 61 relative to the fulcrum boss 62. In the second embodiment, the upper collar 66 is provided integrally with the regulating body 64. The vertical position adjustment holes 65 adjust the vertical position of the fulcrum pipe 61 by selecting the upper and lower attachment positions of the fulcrum pipe 61, the upper collar 66, and the lower collar 67. Reference numeral 431 denotes holes for adjusting the relative position of the second mounding body 43 with respect to the left and right in the direction of travel with respect to the fulcrum pipes 61 provided in plurality on the second mounding body 43. The relative position adjustment holes 431 are the attachment positions of the fulcrum pipes 61 and the second mounding body 43. The left and right position of the second mounding body 43 with respect to the pivot axis A is adjusted by selecting one of the relative position adjustment holes 431, which is the attachment position of the fulcrum pipes 61 and the second mounding body 43. The hole 431 for adjusting the relative position with the fulcrum pipe 61, which is the attachment position of the second mounding body 43 and the pivot axis A, is positioned away from the center in the width direction of the surface of the second mounding body 43. In other words, it is offset from the center in the width direction of the second mounding body 43. In the case of the second embodiment, the center of the four holes 431 for adjusting the relative position with the fulcrum pipe is approximately the center in the width direction of the surface of the second mounding body 43.

[0053] 681 (68) and 682 (68) are fixing members. The fixing members 681 (68) and 682 (68) are made of bolts, and are fixed to the fulcrum pipe 61 by passing the upper collar 66 and the lower collar 67 through the vertical position adjustment holes 65. The upper collar 66 and the lower collar 67 to which the fixing members 681 (68) and 682 (68) are attached enable the fulcrum pipe 61 to be attached so as not to move in the vertical direction relative to the fulcrum boss 62. The second mounding body 43, which is a mounding body, is fixed in front of the fulcrum pipe 61, and the fulcrum pipe 61 essentially serves as the pivot axis A of the second mounding body 43. The fulcrum pipe 61 can slide up and down and pivot around its axis relative to the fulcrum boss 62. The second mounding body 43 can be attached or detached by pulling the fulcrum pipe 61 out of the fulcrum boss 62. The fulcrum pipe 61 is provided with a plurality of holes 65 for adjusting the vertical position, and an upper collar 66 and a lower collar 67 are used to select and fix the vertical position, and to restrict the vertical movement of the fulcrum pipe 61. This makes it possible to adjust the vertical position of the mounding body (second mounding body 43).

[0054] The restricting body 64 provided on the upper collar 66 is bifurcated. A contact piece 472 protruding forward from the mounting base 47 is positioned between the two forks of the restricting body 64. The restricting body 64 comes into contact with the contact piece 472, thereby restricting the rotation of the fulcrum pipe 61. In the second embodiment, the elastic member 71 spans between the pivot shaft-side protruding piece 63 provided upward from the top of the upper collar 66 and the pivot shaft-side protruding piece 63 provided on the mounting base 47 or the cover body 4. A force is applied to the mounding body (second mounding body 43) to rotate it to one side via the upper collar 66 and the fulcrum pipe 61. In the embodiment, a tension spring is shown, but the elastic member 71 may also be a compression spring, a coil spring, or a fluid pressure-based spring arranged to rotate it to one side.

[0055] In the second embodiment, the second soil-removing body 43 can change its projected area when viewed from the front of the traveling direction by rotating in an almost horizontal direction around the rotation axis A depending on the traveling speed. The soil that has been roughly leveled in advance by the soil-collecting body (second soil-collecting body 43) is then crushed in the soil-crushing section 3 and leveled in the soil-leveling section, resulting in a good finished state of the puddling work. By changing the front projection area of the second mounding body 43, the amount and force of the soil pushed aside and moved can be adjusted in accordance with the moving speed, making it possible to level the soil even more flatly.

[0056] In the second embodiment, the rotation of the soil-removing body (second soil-removing body 43), which changes the forward projection area, is achieved by the force of the soil colliding with the soil-removing body (second soil-removing body 43) as the tillage implement 1 moves forward. The change ratio of the front projection area of the mounding body (second mounding body 43) is preferably 1.2 to 1.5 times from small area to large area, and in this embodiment, 1.35 times is adopted. In the second embodiment (shown), when the working speed changes from a low speed (first speed) to a high speed (second speed), the forward projection area gradually changes from small to large due to the pushing force of the incoming soil.

[0057] In the second embodiment, the attachment position of the second mounding body 43 to the pivot axis A can be selected from a plurality of left and right relative position adjustment holes 431, which are attachment positions, thereby making it possible to move the relative position of the second mounding body 43 to the left and right in the direction of travel of the pivot axis A. In other words, the area of the mounding body 43 on both the left and right sides across the pivot axis A can be changed. In the second embodiment, the attachment of the fulcrum pipe 61 that constitutes the pivot axis A to the second mounding body 43 uses the two of the holes 431 for adjusting the left-right relative position with the fulcrum pipe 61, located at the tip end of the second mounding body 43 closest to the cover body 4, which is the left side as shown in Figure 18. Regarding the relative position of the second mounding body 43 when viewed from the front facing the surface of the second mounding body 43 of the pivot axis A, the area of the second mounding body 43 on both sides in the width direction across the pivot axis A is smaller on the side closer to the rut and larger on the side away from the rut. The pivot axis A of the second mounding body 43 is attached to the left side in Figure 18, near the center of the width of the second mounding body 43 relative to the direction of travel of the cover body 4. In addition, the elastic member 71 is provided on the side closer to the rut side, which is closer to the center of the width relative to the direction of travel in a plan view, so a force is applied to constantly pivot the side of the second mounding body 43 closer to the rut side backward.

[0058] Also, in Figure 18, the area on the right side of the fulcrum pipe 61 of the second soil-removing body 43, which is the area on the side away from the cover body 4L towards the front, i.e., the area on the side where the second soil-removing body 43 moves away from the rut from the pivot axis A, is larger than the area on the left side of the figure, which is the area on the side closer to the cover body 4L, i.e., the area on the side where the second soil-removing body 43 moves towards the rut from the pivot axis A. As a result, the second mounding body 43 receives more soil pressure on the left side in the direction of travel, which is the right side in the figure. When soil collides with the second mounding body 43 as the tillage implement 1 moves forward, the collision force causes the second mounding body 43 to rotate counterclockwise to the left, around the pivot axis A. In other words, the inclination angle of the second mounding body 43 in a plan view rotates from one side, in which it is standing facing forward and perpendicular to the front end of the cover body 4, shown by the two-dot chain line in Figure 18, to the other side, in which it is leaning back in a direction parallel to the front end of the cover body 4, shown by the solid line.

[0059] As the traveling speed increases, the force of collision with the mounding body (second mounding body 43) also increases. The force of the collision acts to rotate the mounding body (second mounding body 43) to the other side around the rotation axis A. When this rotation force to the other side becomes greater than the biasing force of the elastic member 71 biasing it to one side, the second mounding body 43 begins to rotate. In the second embodiment, the second mounding body 43 rotates counterclockwise, or left, in a plan view.

[0060] Conversely, as the traveling speed decreases, the force of the soil collision also decreases, and the biasing force of the elastic member 71 that biases it to one side causes the mounding body (second mounding body 43) to rotate so as to return to its original position on one side. In the second embodiment, the second mounding body 43 rotates clockwise, to the right, with the pivot axis A as the rotation center. As shown in Figure 18, which is an enlarged plan view of the mounding body of the tillage implement according to the second embodiment of the present invention, the solid line portion of the second mounding body 43 and the regulating piece 64, which is the regulating part, indicates high speed (after rotation), and the dashed double-dashed line portion indicates low speed (before rotation). That is, the direction in which the second mounding body 43 will rotate at high speed or low speed is determined by the attachment position of the pivot axis A and the hole 431 in the second mounding body 43 for adjusting the left-right relative position with the fulcrum pipe 61. The position of the second mounding body 43 relative to the pivot axis A determines the direction in which the second mounding body 43 will rotate when it encounters resistance from the soil. Depending on the relative positions of the pivot axis A and the second mounding body 43, the size of the left and right areas of the second mounding body 43 with respect to the fulcrum axis A when viewed from the surface where the soil is flowing determines which side has a larger area that experiences soil resistance as the work implement moves forward. As the moving speed increases, the second mounding body 43 rotates backward with the side that is longer in plan view or has a larger area, which is the side that is more susceptible to soil resistance.

[0061] The range within which the earth-piling body (second earth-piling body 43) can rotate is limited by the restricting body 64, so the earth-piling body (second earth-piling body 43) can be prevented from continuing to rotate. Therefore, the direction of soil movement can be kept facing the ruts, allowing for uninterrupted removal of the ruts. The elastic member 71 is always biased in one rotation direction, so it can return to its original position when the soil collision ceases or the soil collision force decreases. In addition, by appropriately adjusting the attachment position, material, shape, etc. of the elastic member 71, the biasing force can be adjusted to adjust for the intensity of soil collision.

[0062] In the second embodiment, when the working speed is low (first speed), for example, about 1 to 3 km / h, the mark-erasing surface of the soil-removing body (second soil-removing body 43) is directed toward the center of the rut groove, reducing the forward projection area and moving the soil into the rut little by little. When the working speed is high (second speed), for example, about 3 to 6 km / h, the mark-erasing surface of the second soil-pile body 43, which is a soil-pile body, can be directed from the center of the rut groove toward the front in the direction of travel, allowing more soil to be moved into the rut. That is, the forward projected area of the second mounding body 43 is reduced when the working speed is low, and increased when the working speed is high. When the working speed is high, more soil is pushed aside by the traveling body due to the momentum of the traveling speed than when the working speed is low, so by increasing the forward projected area, the soil can be moved more efficiently.

[0063] A third embodiment of the present invention shown in Figure 19 will now be described. In the third embodiment, a second mounding body 43 having the following configuration is provided in addition to the first embodiment. The first mounding body 42 and the third mounding body 44 may also have the same structure. In FIG. 19, the second mounding body 43 shown by a solid line is in a state of low speed, and the second mounding body 43 shown by a two-dot chain line is in a state of high speed. In the third embodiment, the fulcrum pipe 61 that constitutes the pivot axis A is attached to the second mounding body 43 using the two of the left-right relative position adjustment holes 431 located at the tip end of the second mounding body 43 on the right side as shown in Figure 19, which is away from the cover body 4. When viewed from the front facing the surface of the second mounding body 43, the relative position between the pivot axis A and the second mounding body 43 is such that the area on both sides of the width of the second mounding body 43 across the pivot axis A is larger on the side closer to the rut and smaller on the side away from the rut.

[0064] In the third embodiment, the elastic member 71 is made of a compression spring. The elastic member 71 biases the second mounding body 43, which is a mounding body that can be rotated about the rotation axis A, in one rotation direction. In the third embodiment, the elastic member 71 acts as a compression spring that applies a force to rotate the rut-side end of the second mounding body 43 in a direction away from the front end of the cover body 4 forward, i.e., in one rotation direction. In the third embodiment, the elastic member 71 spans between the pivot shaft-side protrusion 63 provided on the upper collar 66 and the cover body-side protrusion 46 provided on the mounting base 47 or the cover body 4. The mounding body (second mounding body 43) is biased to pivot to one side via the upper collar 66 and the fulcrum pipe 61. In the embodiment, a compression spring is shown, but the elastic member 71 may also be a tension spring, a coil spring, or a fluid pressure-applied elastic member arranged to pivot to one side.

[0065] In the third embodiment, the telescopic rod 72 is installed at the center of the elastic member 71 and guides the elastic member 71. In the third embodiment, the attachment position of the pivot axis A to the second piling body 43 can be selected from the attachment position, which is the hole 431 for adjusting the left and right relative position with the fulcrum pipe, thereby making it possible to change the area of both sides of the piling body 43 on either side of the pivot axis A. In the third embodiment, the fulcrum pipe 61 that constitutes the pivot axis A is attached to the second soil-removing body 43 using two of the left-right relative position adjustment holes 431, which are located on the right side as shown in Figure 19, at the end farthest from the cover body 4L of the second soil-removing body 43.

[0066] Therefore, the rotation axis A of the second mounding body 43 is attached to the side of the second mounding body 43 away from the cover body 4, which is the right side in FIG. When viewed from the surface on which the soil of the second mounding body 43 moves, the relative mounting position relationship between the second mounding body 43 and the pivot axis A is such that the pivot axis A is positioned at a location offset to the side from the center, avoiding the center of the second mounding body 43. In plan view, the middle of the surface on which the soil of the second mounding body 43 moves is the position corresponding to the center of the four holes of the relative position adjustment holes 431. When viewed from the surface on which the soil of the second soil-pile body 43 moves, the area on the left side of the fulcrum pipe 61, which is the actual fulcrum axis A, that is, the area closer to the cover body 4, is larger than the area on the right side of the fulcrum pipe 61, that is, the area farther from the cover body 4.

[0067] Therefore, the second mounding body 43 receives more pressure from the soil on the left side in the figure, which has a larger area. When soil collides with the second mounding body 43 as the tillage implement 1 advances, the collision force causes the second mounding body 43 to rotate clockwise to the right, with the pivot axis A as the rotation center. In other words, the inclination angle of the second mounding body 43 in a plan view rotates from one side, where it is leaning in a direction parallel to the front end of the cover body 4, shown by the solid line in Figure 19, to the other side, where it is standing forward and facing perpendicular to the front end of the cover body 4, shown by the two-dot chain line. The other configurations of the third embodiment are the same as those of the second embodiment.

[0068] As the traveling speed increases, the force of collision with the mounding body (second mounding body 43) also increases. The force of the collision causes the mounding body (second mounding body 43) to rotate to the other side around the rotation axis A. When this rotation force to the other side becomes greater than the biasing force of the elastic member 71 biasing it to one side, the second mounding body 43 begins to rotate. In the third embodiment, the second mounding body 43 rotates clockwise.

[0069] Conversely, as the traveling speed decreases, the force of the soil collision also decreases, and the biasing force of the elastic member 71 that biases it to one side causes the mounding body (second mounding body 43) to rotate so as to return to its original position on one side. In the third embodiment, the second mounding body 43 rotates counterclockwise to the left, with the pivot axis A as the rotation center. As shown in Figure 19, which is an enlarged plan view of the mounding body of the tillage implement according to the third embodiment of the present invention, the solid line portion of the second mounding body 43 and the regulating body 64, which is the regulating part, indicates the state at low speed (before rotation), and the dashed double-dashed line portion indicates the state at high speed (after rotation).

[0070] The range within which the earth-piling body (second earth-piling body 43) can rotate is limited by the restricting body 64, so the earth-piling body (second earth-piling body 43) can be prevented from continuing to rotate. Therefore, the direction of soil movement can be kept facing the ruts, allowing for uninterrupted removal of the ruts.

[0071] The elastic member 71 is always biased in one direction of rotation, so it can return to its original position when the soil collision ceases. In addition, by adjusting the mounting position, material, shape, etc. of the elastic member 71, the biasing force can be adjusted to adjust for the intensity of soil collision. In the third embodiment, by changing the relative positional relationship between the mounding body and the pivot axis A, the type of elastic member 71, and the positional relationship of the elastic member 71, the forward projection area can be gradually changed from a large area to a small area when the working speed changes from low to high.

[0072] In the third embodiment, when the working speed is low (first speed), for example, about 1 to 3 km / h, the mark-erasing surface of the soil-removing body (second soil-removing body 43) is directed toward the center of the rut groove, increasing the forward projection area and actively moving the soil into the rut. When the working speed is high (second speed), for example, about 3 to 6 km / h, the soil moving surface of the second soil-pile body 43, which is a soil-pile body, can be directed to the side of the direction of travel, and the soil can be gradually moved into ruts along the direction of travel. That is, when the working speed is low, the frontal projection area of the second mounding body 43, which is a mounding body, is made large, and when the working speed is high, the frontal projection area is made small.

[0073] The mounding body (second mounding body 43) in the third embodiment is effective when the soil viscosity is low due to the soil quality and moisture content. In low-viscosity soil, the traveling body forms ruts, but the weight of the soil itself and the flow of moisture move the soil into the grooves of the formed ruts. As a result, the amount of soil pushed aside beside the ruts is small, and the ruts do not become deep. At low speed (first speed), the soil viscosity is low, often resulting in poor soil movement efficiency. Therefore, the forward projected area is increased to actively ensure the amount of soil movement. Conversely, if soil is moved forcefully toward the ruts at high speed (second speed), the soil is highly fluid, and the moved soil may overhang the ruts. To avoid this, at high speed, the forward projected area is reduced, and the mounding body (second mounding body 43) is rotated to align the flow of the moving soil with the direction of travel, preventing the soil from overhanging the ruts. In other words, the mounding body in the third embodiment effectively moves soil toward the ruts, leveling the soil.

[0074] In the fourth embodiment, the plan view of which is shown in FIG. 20, the elastic member 71 is made of a tension spring. The elastic member 71 biases the second mounding body 43, which is a mounding body that can be rotated about the rotation axis A, in one rotation direction. In the fourth embodiment, the elastic member 71 acts as a tension spring that pulls the rut-side end of the second mounding body 43 forward, away from the front end of the cover body 4.

[0075] In the fourth embodiment, of the left-right relative position adjustment holes 431, the two holes on the right side in FIG. 20, at the end side of the second mound body 43 farther from the cover body 4, are used. Therefore, the rotation axis A of the second mounding body 43 is attached to the side of the second mounding body 43 away from the cover body 4, which is the right side in FIG. When viewed from the surface on which the soil of the second mounding body 43 moves, the relative mounting position relationship between the second mounding body 43 and the pivot axis A is such that the pivot axis A is positioned at a location offset to the side from the center, avoiding the center of the second mounding body 43. In plan view, the middle of the surface on which the soil of the second mounding body 43 moves is the position corresponding to the center of the four holes of the relative position adjustment holes 431.

[0076] Therefore, when viewed from the surface on which the soil of the second soil-pile body 43 moves, the area on the side closer to the cover body 4, which is the area to the left of the fulcrum pipe 61 in the figure, which is the actual fulcrum axis A, is larger than the area on the side farther from the cover body 4, which is the area to the right of the fulcrum pipe 61 in the figure. Therefore, the second mounding body 43 receives more soil pressure on the left side in the figure, which has a larger area. When soil collides with the second mounding body 43 as the tillage implement 1 advances, the collision force causes the second mounding body 43 to rotate clockwise to the right, with the pivot axis A as the rotation center. In other words, the inclination angle of the second mounding body 43 in a plan view rotates from one side, where it is leaning in a direction parallel to the cover body 4, shown by the solid line in Figure 20, to the other side, where it is standing forward and facing perpendicular to the front end of the cover body 4, shown by the two-dot chain line. The other configurations of the fourth embodiment are the same as those of the second and third embodiments.

[0077] As the traveling speed increases, the force of collision with the mounding body (second mounding body 43) also increases. The force of the collision becomes a force that rotates the mounding body (second mounding body 43) to the other side around the rotation axis A. When this rotation force to the other side becomes greater than the biasing force of the elastic member 71 that biases it to one side, the second mounding body 43 begins to rotate. In the fourth embodiment, the second mounding body 43 rotates clockwise.

[0078] Conversely, as the traveling speed decreases, the force of the soil collision also decreases, and the biasing force of the elastic member 71 that biases it to one side causes the mounding body (second mounding body 43) to rotate so as to return to its original position on one side. In the third embodiment, the second mounding body 43 rotates counterclockwise to the left, with the pivot axis A as the rotation center. As shown in Figure 20, which is an enlarged plan view of the mounding body of the tillage implement according to the fourth embodiment of the present invention, the solid line portion of the second mounding body 43 and the regulating body 64, which is the regulating part, indicates the state at low speed (before rotation), and the dashed double-dashed line portion indicates the state at high speed (after rotation).

[0079] The range within which the earth-piling body (second earth-piling body 43) can rotate is limited by the restricting body, so the earth-piling body (second earth-piling body 43) can be prevented from continuing to rotate. Therefore, the direction of soil movement can be kept facing the ruts, allowing for uninterrupted removal of the ruts.

[0080] The elastic member 71 is always biased in one direction of rotation, so it can return to its original position when the soil collision ceases. In addition, by adjusting the mounting position, material, shape, etc. of the elastic member 71, the biasing force can be adjusted to adjust for the intensity of soil collision.

[0081] In the fourth embodiment, the forward projected area can be gradually changed from large to small as the working speed changes from low to high by changing the relative positional relationship between the mounding body and the pivot axis A, or by changing the type and positional relationship of the elastic member 71. The action and effects produced by the mounding body in the fourth embodiment are the same as those in the third embodiment, and therefore a description thereof will be omitted.

[0082] In the fourth embodiment, in a plan view, from the rut to be backfilled in the direction of travel and width, there is arranged a second mounding body 43, which is a mounding body located on the side of the rut, a pivot A for pivoting the mounding body, and an elastic member 71 next to the second mounding body 43. In contrast, in the second and third embodiments, the second mounding body 43 is located on the side of the rut, followed by the elastic member 71, and then the pivot A. In the fourth embodiment, the elastic member 71 is located away from the rut. Furthermore, the fulcrum pipe 61, which is the pivot A, is located between the elastic member 71 and the rut. Therefore, mud splashes that may be generated from the rut during backfilling are unlikely to reach the elastic member 71. Furthermore, because the elastic member 71 is located behind the fulcrum pipe 61 from the rut, direct mud splashes can be prevented.

[0083] In the second, third and fourth embodiments, the attachment position of the pivot axis A to the second piling body 43 can be selected from the hole 431 for adjusting the left and right relative position with the fulcrum pipe, thereby changing the area of both sides of the piling body 43 on either side of the pivot axis A. In the second embodiment, the fulcrum pipe 61 that constitutes the pivot axis A is attached to the second soil-retaining body 43 using the two holes 431 for adjusting the left-right relative position with the fulcrum pipe 61, located at the tip end of the second soil-retaining body 43 closest to the cover body 4, which is the left side shown in Figure 18.

[0084] In the third embodiment, the fulcrum pipe 61 that constitutes the pivot axis A is attached to the second soil-retaining body 43 using two of the holes 431 for adjusting the left-right relative position with the fulcrum pipe, which are located on the right side as shown in Figure 19, at the end farthest from the cover body 4L of the second soil-retaining body 43.

[0085] In the fourth embodiment, the fulcrum pipe 61 that constitutes the pivot axis A is attached to the second soil-retaining body 43 using two of the holes 431 for adjusting the left-right relative position with the fulcrum pipe 61, located on the right side as shown in Figure 20, at the end farthest from the cover body 4 of the second soil-retaining body 43. By selecting the hole 431 for adjusting the left and right relative position with respect to the fulcrum pipe 61 when attaching the fulcrum pipe 61 that constitutes the pivot axis A to the second soil-piling body 43, it is possible to select the position of the pivot axis A on the second soil-piling body 43, thereby changing the area of the second soil-piling body 43 from the pivot axis A to the cover body 4 and the area on the side away from the cover body 4. Therefore, when the second soil-piling body 43 comes into contact with the soil and is pressed, it adjusts which side of the body receives the greater soil pressure. The greater the soil pressure, the greater the pressure, so the body is more easily pressed, and the side that comes into contact with the soil and receives the greater soil pressure rotates so that it approaches the second soil-piling body 43 side. Therefore, the direction of rotation can be selected by determining where on the second mounding body 43 the pivot axis A is attached.

[0086] In this embodiment, four holes 431 are provided for adjusting the left and right relative position with the fulcrum pipe, and two of each are used to fix the second mound body 43 and the rotation axis A, but if more holes are used, it is possible to further change the movement distance and movement speed.

[0087] In the second, third and fourth embodiments, the mechanism of the invention is incorporated into the second mounding body 43, but it may also be incorporated into the first mounding body 42 or the third mounding body 44. Furthermore, the mounding body (second mounding body 43) in the second and third embodiments may be provided on a side working body other than the central working body 11, that is, the left extended working body 11L or the right extended working body 11R. It may also be provided on a working body consisting of only the central working body 11 (a so-called working machine without a folding mechanism). [Explanation of symbols]

[0088] 1. Plowing machine (traveling body) 3 Crushing section 32 Cultivating Claw 42 First mound 43 Second earth-removal body (earth-removal body) 431 Hole for adjusting the relative left and right position with the support pipe (mounting position) 64 Regulatory Body 71 Elastic member A Swivel Axis

Claims

1. A soil crushing unit that crushes soil by rotating the tillage tines as the traveling machine body moves forward; and a soil-collecting body that is arranged on the front side of the direction of travel of the soil-crushing unit and is capable of pushing and moving soil to the side, The soil-collecting body is a soil-collecting body that can rotate horizontally in response to the resistance of soil pushing in from the direction of travel; A mounding body that does not rotate in response to the resistance of soil pushing in from the direction of travel; A tillage implement characterized by comprising:

2. An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The rotatable soil-collecting body is provided in front of the soil-crushing unit.

2. The plow implement according to claim 1,

3. An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The rotatable soil-collecting body is provided in front of the extended soil-collecting section.

2. The plow implement according to claim 1,

4. An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The non-rotating soil-collecting body is provided in front of the soil-crushing unit.

2. The plow implement according to claim 1,

5. An extension soil crushing unit is provided on the side of the soil crushing unit so as to be foldable relative to the soil crushing unit, The non-rotating soil-collecting body is provided in front of the extended soil-collecting section.

2. The plow implement according to claim 1,

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