Agricultural machinery

Abstract

To provide an agricultural machine including a ridging body capable of improving a ridging effect.SOLUTION: Provided is an agricultural machine including ridging bodies (first ridging bodies 42, second ridging bodies 43, and third ridging bodies (not shown)) located behind a travel machine body 1 and capable of erasing travel marks formed by the travel machine body 1 by moving soil to the travel marks. The ridging body includes: a ridging surface 431 that moves soil to a side in a travel direction; and a rectification part 432 arranged in a lower end part of the ridging surface, arranged rearward, and including a guide surface that aligns a flow of soil flowing below the ridging surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an agricultural implement, and more particularly to a tillage implement that uses a soil-breaking section to level soil that has been roughly leveled in advance by a soil-mounding body. [Background technology]

[0002] An example of a farm machine that plows and levels a field using tines attached to a traveling machine body and driven to rotate is disclosed in Patent Document 1. This invention is equipped with a piling plate that gathers soil into grooves formed in the field surface by tires or the like as the traveling machine body passes over. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 54-97406 Summary of the Invention [Problem to be solved by the invention]

[0004] When the work speed is increased in a state where the bottom end of the piling board is perpendicular to the soil surface, as in the case of the piling board described in Patent Document 1, a vortex of soil flow occurs at the bottom end of the piling board. This vortex can gouge out the soil surface, reducing the effectiveness of the piling board.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problem, and has an object to provide an agricultural work machine having a soil piling body that can improve the soil piling effect. [Means for solving the problem]

[0006] This invention is and a horizontally rotatable soil-removing body located behind the traveling body and capable of moving soil to the traveling trace formed by the traveling body to erase the traveling trace, The soil-collecting body has a soil-collecting surface that moves soil laterally in the direction of travel, A straightening section disposed at the lower end of the soil-piling surface and facing rearward, the straightening section having a guide surface for arranging the flow of soil flowing below the soil-piling surface; Equipped with 、 The mounding body rotates horizontally due to the load from the mud as it advances, and when the load is released it is forced to rotate in one direction and returns to its original position. An agricultural machine characterized by: relates to.

[0007] This invention 、 The bias to rotate in one direction is provided by an elastic member. An agricultural machine characterized by: relates to. [Effects of the Invention]

[0010] An object of the present invention is to provide an agricultural work machine having a soil piling body that can improve the soil piling effect. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view of a tillage implement according to an embodiment of the present invention, showing the entire tillage implement as seen from the front in the direction of travel, with the side working bodies in an unfolded state. [Figure 2] 1 is a plan view of a tillage implement according to an embodiment of the present invention, showing the entire plan view of the tillage implement, with the side working bodies in an unfolded state; [Figure 3] 1 is a side view of the entire plow tool according to an embodiment of the present invention, as seen from the left in the direction of travel, with the side working body in an unfolded state. [Figure 4] 1 is an enlarged front view of a soil-pile body of a tillage implement according to an embodiment of the present invention, the view showing the state in which the soil-pile body is disposed on the left side of the travel trail in the direction of travel. [Figure 5] 1 is an enlarged side view of a soil mounding body of a tillage implement according to an embodiment of the present invention, showing the soil mounding body disposed on the left side of the travel trail in the direction of travel. [Figure 6] 1 is an enlarged plan view of a mounding body of a tillage implement according to an embodiment of the present invention, showing the mounding body disposed on the left side of the travel trail. [Figure 7] 1 is a cross-sectional bottom view of a mounding body of a tillage implement according to an embodiment of the present invention, particularly showing a pivot shaft, a cover member, and a fixing device. The illustration shows the mounding body disposed on the left side of the trail. [Figure 8] 1 is an enlarged rear view of the soil-mounding body of the tillage implement according to the embodiment of the present invention, particularly showing the fixture. [Figure 9] 1 is a side view of a plow body of a tillage implement according to an embodiment of the present invention, viewed from a direction parallel to the plow surface, showing the plow body disposed on the left side of the implement body. [Figure 10] 1 is a cross-sectional view of a soil-retaining body of a tillage implement according to an embodiment of the present invention, taken along a cross section in the left-right direction at the center of a pivot shaft. The soil-retaining body is not shown. The soil-retaining body shown is located on the left side of the machine body. [Figure 11] 1 is a plan cross-sectional view of a tillage implement according to an embodiment of the present invention; 2 is a plan cross-sectional view of a cover member; 3 is a view showing a state in which the tillage implement is fixed by a fixing member and the load on the tillage plate is small; 4 is a view showing a state in which the tillage implement is fixed by a fixing member and the load on the tillage plate is small; 5 is a view showing a state in which the tillage implement is fixed by a fixing member and the load on the [Figure 12] 1 is a plan cross-sectional view of a tillage implement according to an embodiment of the present invention; 2 is a plan cross-sectional view of a cover member; 3 is a view showing a state in which the tillage implement is fixed by a fixing member and a load on the tillage plate is large; 4 is a view showing a state in which the tillage implement is fixed by a fixing member and a load on the tillage plate is large; 5 is a view showing a state in which the tillage implement is fixed by a fixing member and a load on the cover member; [Figure 13] 1 is a plan view showing an example of a straightening section provided on a mounding body of a tillage implement according to an embodiment of the present invention. The straightening section has a linear shape. The illustration shows a mounding body disposed to the left of the travel trail in the direction of travel. [Figure 14] 1 is a plan view showing another example of a flow straightening section provided on a mounding body of a tillage implement according to an embodiment of the present invention. The flow straightening section has a wave-shaped configuration. The illustration shows a mounding body disposed to the left of the travel trail in the direction of travel. [Figure 15] 1 is a plan view showing another example of a straightening section provided on a mounding body of a tillage implement according to an embodiment of the present invention. The straightening section has a mountain-like shape. The illustration shows a mounding body arranged on the left side of the travel trail in the direction of travel. [Figure 16]1 is a cross-sectional view of an example of a plow tool according to an embodiment of the present invention, in which a soil-retaining body is attached to a cover body, with the cover and the pivot shaft fixed to the intermediate hole. DETAILED DESCRIPTION OF THE INVENTION

[0012] A plow machine according to an 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. The right extension work body 11R and the left extension work body 11L constitute a side work body.

[0013] 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. The pipe frame 22 is made up of a first pipe frame 221 and a second pipe frame 222. In front of the first pipe frame 221, which is the pipe frame 22, the second pipe frame 222, which is an elongated body, is arranged between the support frames 24. The second pipe frame 222 supports the mounting section 20 and the transmission section (not shown) together with the first pipe frame 221, and also supports the central working body 11 and the side working bodies, that is, the right extended working body 11R and the left extended working body 11L.

[0014] The second pipe frame 222 according to the embodiment of the present invention is made of square pipes with a rectangular cross section. As shown in Figures 4 to 8 and 10, the lower surface of the second pipe frame 222 made of square pipes is sometimes referred to as a first surface 222A, the upper surface as a second surface 222B, the front surface in the traveling direction as a third surface 222C, and the rear surface in the traveling direction as a fourth surface 222D.

[0015] The side working bodies consisting of the right extended working body 11R and the left extended working body 11L are provided with side pipe frames 223 and side transmission cases 231, and by engaging a dog clutch 33 located on the side of the upper part of the transmission case 23 of the central working body 11, power is transmitted to the soil crushing sections 3R and 3L of the side working bodies (right extended working body 11R, left extended working body 11L) via the side pipe frames 223 and side transmission cases 231.

[0016] 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.

[0017] 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. The lower plate 213 may be attached to a second pipe frame 222, as shown in FIGS. 1 and 2. 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.

[0018] Reference numeral 24 denotes a support frame. The support frame 24 is provided in a position symmetrical to the input case 21, and holds a rotor shaft 31 (described later) below the pipe frame 22. In this embodiment, the transmission case 23 is provided on the support frame 24 on the left side in the traveling direction, which is one end of the pipe frame 22 of the central working body 11. 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.

[0019] 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. The soil crushing unit 3 crushes the soil by rotating the tillage tines 32 as the traveling machine body moves forward. 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.

[0020] A rotor shaft 31 is a rotating shaft that is hung across the lower portions of the support frames 24 and rotates by the driving force from the transmission case 23. 31L is the left extension rotor shaft. The left extension rotor shaft 31L is provided on the left extended working body 11L on the left side of the rotor shaft 31 in the direction of travel. 31R is the right extension rotor shaft. The right extension rotor shaft 31R is provided on the right extended soil crushing section 3R on the right side of the rotor shaft 31 in the direction of travel. The left extension rotor shaft 31L and the right extension rotor shaft 31R rotate by the driving force from the side transmission case 231.

[0021] 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.

[0022] Reference numeral 33 denotes a dog clutch. The dog clutch 33 is composed of a dog clutch center side (not shown), an extension-side dog clutch left extension side (not shown), and an extension-side dog clutch right extension side (not shown). The dog clutch center sides are provided near the transmission case 23 and the support frame 24 at both ends of the first pipe frame 221. The left extension side of the extension dog clutch is located on the right side of the left extension soil crushing section 3L in the direction of travel and engages with the center side of the dog clutch to form a dog clutch on the left side in the direction of travel. The right extension side of the extension dog clutch is located on the left side of the left extension soil crushing section 3R in the direction of travel and engages with the center side of the dog clutch to form a dog clutch on the right side in the direction of travel. A dog clutch 33 turns on and off the rotational drive of the extension-side rotor shaft left 31L and the extension-side rotor shaft right 31R.

[0023] 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 holding part 34 is located behind the third soil-collecting body (not shown) and holds the rotation shaft of the soil-crushing part 3. The holding part 34 is attached to the lower part of the transmission case 23 and the support frame 24, respectively. The left extension holding portion 34L is a bearing portion for the rotor shaft 31L, and is provided at the bottom of the left cover body 4L, which will be described later. The right extension holding portion 34R is a bearing portion for the rotor shaft 31R, and is provided at the bottom of the right cover body 4R, which will be 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.

[0024] 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.

[0025] 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 side pipe frame 223. The right fulcrum frame 41R is a member that protrudes upward to attach the right extension working 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 side pipe frame 223.

[0026] The soil-piling bodies consist of a first soil-piling body 42, a second soil-piling body 43, and a third soil-piling body (not shown), and are arranged on the front side in the direction of travel of the soil-crushing unit 3. The soil-piling bodies can move soil into the tracks formed by the traveling body, thereby erasing the tracks. The mounding body is provided on the second pipe frame 222, which is a long body positioned behind the traveling body. Furthermore, mounding bodies can also be provided on the cover body 4, the left cover body 4L, the right cover body 4R, the support frame 24, the transmission case 23, and the side transmission case 231. The mounding bodies have mounding surfaces that can move soil toward the wheel tracks. The mounding bodies (first mounding body 42, second mounding body 43, and third mounding body (not shown)) have, for the second mounding body 43, a mounding surface 431 that moves soil to the side in the direction of travel. The first mounding body 42 and the third mounding body (not shown) also have mounding surfaces (not shown) in the same way. The mounding body can be rotated horizontally by a rotation shaft 61, and the projected area as seen from the direction of travel can be changed. In this embodiment of the present invention, the second mounding body 43 is adapted to be located on the outer side of the travel path relative to the width of the traveling body, but it may also be adapted to be located on the first mounding body 42 on the central side of the travel path relative to the width of the traveling body.

[0027] The first soil-collecting body 42 is located in front of the soil-crushing section 3 and below the cover body 4, and the surface located on one side of the width of a rut formed in the field by the traveling vehicle body is inclined rearward as it moves outward relative to the vehicle body width. The first mounding body 42 is installed at the center of the tillage implement 1.

[0028] The second soil-collecting 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.

[0029] Reference numeral 42b denotes a support member that supports the first mounding body 42. 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 member that is arranged and fixed so as to hang 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. The support member 43b of the second mounding body 43 is a member for attaching the second mounding body 43 to the tillage implement 1, and is also called a pivot shaft 61. The pivot shaft 61, which is the support member 43b, is a member arranged to hang downward from each of both ends of the front part of the cover body 4. The lower part of the support member 43b is located below the lower end of the cover body 4, and the second mounding body 43 is attached to the lower part of this support member 43b.

[0030] The third soil-collecting body (not shown) is located in front of the soil-crushing section 3 and below the cover body 4, and is positioned on the other side of the rut, with its surface located on the outside of the second soil-collecting body 43 on the left and right sides in the direction of travel inclined rearward as it moves inward relative to the width of the harrowing machine 1, which is the width of the machine body. The third soil-piling body (not shown) is installed on the end side of the cover body 4 of the tillage implement 1, and further outward than the second soil-piling body 43 in the direction of travel. The first mounding body 42, the second mounding body 43 and the third mounding body (not shown) are installed opposite each other across the width of a single rut formed in the field by the moving machine body, the tillage implement 1.

[0031] 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 is positioned so that it does not protrude in the direction of travel to avoid contact with the tires or crawlers of the tractor when the three-point linkage moves up and down.

[0032] The front end of the third soil-removing body (not shown) is positioned 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 is provided some distance rearward of the second soil-removing body 43. If the third soil-removing body is positioned 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 will become narrow, and the flow of soil passing through this gap will be poor.

[0033] 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 and 45 are located at the ends of the cover body 4 in the width direction of the machine body. Therefore, the flow of the soil can be determined and the soil can be sent to the wheel grooves in advance before it reaches the soil crushing section 3 located behind the front end of the cover body 4.

[0034] 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. A hinge 52 is provided to attach the leveling body 5 to the cover body 4, the left cover body 4L, and the right cover body 4R as a pivot point for vertical rotation.

[0035] The rotation mechanism of the mounding bodies (first mounding body 42, second mounding body 43 and third mounding body (not shown)) will be described. In the embodiment described, the rotation mechanism will be provided on the second mounding body 43. The pivot shaft 61 can rotate the second mounding body 43 horizontally. The pivot shaft 61 is pipe- or rod-shaped and is positioned vertically. The pivot shaft 61 is held by holding members 65, which are fulcrum bosses provided at two locations, one above and one below, allowing it to rotate freely and move along its axial axis.

[0036] The positional relationship between the pivot shaft 61 and the second mounding body 43 in the left-right direction is such that, as in the embodiment of this invention, the pivot shaft 61 is located at the side end of the second mounding body 43 on the rut side. Because the pivot shaft 61 is located at the side end of the mounding body, it always pivots in one direction when subjected to a load. The pivot shaft 61 may also be located in the middle of the second mounding body 43 in the left-right width direction, or at the side end on the side away from the rut. In the illustrated embodiment of the present invention, the work machine body has a central work body 11 and side work bodies (extended work body right 11R, extended work body left 11L), and the description will be given using a work machine 1 in which these side work bodies can be stored and deployed, but the present invention can also be applied to a work machine consisting of only the central work body 11.

[0037] The pivot shaft 61 is provided with a cover member 63 positioned between the holding members 65 . As shown in Figure 4 and subsequent figures, cover member 63 is a box-shaped member that can cover the periphery of elastic member 62, which will be described later, and there is a space inside cover member 63 between it and pivot shaft 61 that can cover elastic member 62. Cover member 63 is rotatable about pivot shaft 61, and is prevented from moving up and down by a retaining member 65. Cover member 63 has a restricting portion 64, as shown in Figure 5 and subsequent figures. Restricting portion 64 restricts movement of the mounding bodies (first mounding body 42, second mounding body 43, and third mounding body (not shown)) around pivot shaft 61. The cover member 63 has a boss 68 at its top into which the pivot shaft 61 is inserted, and the boss 68 has a hole 74a that penetrates in a direction perpendicular to the direction of the pivot shaft 61. The pivot shaft 61 is also provided with a hole 74b, and by inserting and removing a pin-shaped fixing member 69 so that it passes through these holes 74a and 74b, the cover member 63 and the pivot shaft 61 can be fixed and released as a unit. In the fixed state, the pivot shaft 61 cannot move up and down, but when released, the pivot shaft 61 can move up and down relative to the holding member 65 and cover member 63. By passing the fixing member 69 through the respective holes 74a, 74b, the rotating shaft 61 and the boss portion 68 are fixed together, and the rotating shaft 61 cannot move up and down relative to the fixing member 69. The rotating shaft 61 and the cover member 63, which are integrated in a fixed state, can rotate relative to the holding member 65 within the rotation range limited by the restricting portion 64.

[0038] On the other hand, by pulling out and removing the fixing member 69, the fixing between the swivel shaft 61 and the boss portion 68 is released, and the swivel shaft 61 can move up and down relative to the fixing member 69. In addition, in the released state, the swivel shaft 61 and the cover member 63 can each independently move in a swiveling manner relative to the holding member 65. Note that the cover member 63 can move in a swiveling manner within the rotation range limited by the restricting portion 64. The pivot shaft 61, which is fixed by the fixing member 69, can pivot within the pivot range defined by the first restricting portion 641 and the second restricting portion 642. In other words, the second mounding body 43, which is fixed, can pivot within the pivot range defined by the restricting portion 64.

[0039] On the other hand, the pivot shaft 61 in the released state by the fixing member 69 can pivot relative to each of the cover member 63 and the holding member 65, regardless of the rotation range formed by the first restricting portion 641 and the second restricting portion 642. In other words, the second mounding body 43 in the released state can freely pivot around the pivot shaft 61 by the restricting portion 64. The pivot shaft 61, which is fixed by the fixing member 69, is biased by the elastic member 62 so as to pivot in one direction. In the fixed state in this embodiment, the piling surface 431 of the second piling body 43, which is disposed at the lower end of the pivot shaft 61, is biased so as to pivot in the direction along the traveling direction. The second piling body 43 then travels with at least the lower end of the piling surface 431 buried in the mud.

[0040] The cover member 63 is fixed integrally with the pivot shaft 61 by inserting the fixing member 69 into the cover member 63 and the pivot shaft 61, thereby preventing the second mounder 43 from moving in the axial direction of the pivot shaft 61 and the circumferential direction of the pivot shaft 61 relative to the pivot shaft 61. By pulling out the fixing member 69 from the cover member 63 and the pivot shaft 61, the fixation between the cover member 63 and the pivot shaft 61 is released, allowing the second mounder 43 to move in the axial direction of the pivot shaft 61 and the circumferential direction of the pivot shaft 61 relative to the pivot shaft 61.

[0041] The cover member 63 is provided so that the pivot shaft 61 can move to a position other than the axis of the pivot shaft 61 after the pivot shaft 61 is pulled out from the cover member 63 . A cover member 63 is provided between the bosses of the holding member 65. A cylindrical boss portion 68 (different from the boss of the holding member 65) is provided on the top of the cover member 63, and the pivot shaft 61 is provided so that it can be inserted into the boss portion 68.

[0042] The elastic member 62 will now be described. An elastic member 62 is provided in the space within the cover member 63, and constantly biases the second mounding body 43 in one direction around the pivot axis 61. This causes the second mounding body 43 to pivot around the pivot axis 61 depending on the strength of the load it receives from the soil as it advances. In this embodiment, a coil spring is used as the elastic member 62. The coil portion of the coil spring is inserted through the pivot shaft 61, and one arm portion 621 is arranged to contact a contact portion 67 provided on the third surface 222C of the second pipe frame 222, while the other arm portion 621 is arranged to contact the inner wall surface of the cover member 63. With this configuration, the cover member 63 is constantly biased in one direction. The end of the coil spring arm portion 621 is formed into a hook shape, which is arranged to prevent the repulsive force of the elastic member 62 from being locally concentrated on the cover member 63 or the contact portion 67.

[0043] By using a coil spring for the elastic member 62 as in the embodiment, it is possible to compactly configure the area around the pivot shaft 61. Although a coil spring is used for the elastic member 62 in the embodiment, there are no limitations on the type of elastic member 62, as long as it can constantly bias the cover member 63 or the boss of the cover member 63 in one direction relative to the pivot shaft 61. The elastic member 62 is covered by the cover member 63, which prevents the adhesion of scattered foreign matter, etc. This allows the elastic member 62 to apply a stable biasing force to the cover member 63 without being affected by foreign matter.

[0044] A hole 74a for inserting a fixing member 69 is formed through the boss portion 68 in a direction perpendicular to the axis. Also, a hole 74b for inserting a fixing member 69 (described later) is formed through the rotating shaft 61 in a direction perpendicular to the axis. By using the fixing member 69, the rotating shaft 61 can be prevented from moving up and down.

[0045] The holding member 65 will now be described. The cover member 63 is sandwiched between holding members 65, which hold the pivot shaft 61 and allow it to move circumferentially and axially. The holding members 65 are members whose positions can be fixed relative to the second pipe frame 222 and can rotatably support the pivot shaft 61 on the front side of the second pipe frame 222. The holding members 65, which serve as fulcrum bosses, support the pivot shaft 61 at two spaced locations, one above the other. This reduces the contact area and prevents increased friction with the pivot shaft 61 during rotation, while firmly supporting the pivot shaft 61 without wobbling along its axis. In other words, the second mound 43, which is disposed at the lower end of the pivot shaft 61, can be stably positioned below the pivot shaft 61 and can stably rotate around the pivot shaft 61. The rear of the holding member 65 is provided with an abutment portion 67, against which the restricting portion 64 can abut, to restrict the pivot movement of the cover member 63.

[0046] The fitting portion 66 will now be described. In this embodiment, the fitting portion 66 is provided on the second mounding body 43. The mounding bodies (first mounding body 42, second mounding body 43 and third mounding body (not shown)) are long bodies and have fitting parts 66 that can move left and right relative to the direction of travel with respect to the second pipe frame 222. The fitting parts 66 have a U-shaped cross section with the rear side open. The fitting portion 66 has a holding member 65 for attaching the second mounding body 43 so that the second mounding body 43 can move up and down. In this embodiment, the holding member 65 is disposed on the front side of the fitting portion 66 in the traveling direction. The holding member 65 is connected to a fitting portion 66 that has a U-shaped cross section and is open at the rear side, and the fitting portion 66 fits into the second pipe frame 222, which is an elongated body that extends left and right relative to the direction of travel, and is movable in the elongated direction. A fixing device 71 is attached to the rear side of the fitting portion 66, so that it cannot move relative to the elongated body. The holding members 65 are arranged spaced apart from each other above and below, and each have a boss located in front of a fitting portion 66. The boss is fixed integrally with the fitting portion 66. The rotating shaft 61 can be inserted into the boss, and when inserted, can rotate relative to the boss, and is provided so as to be movable on the same axis as the boss.

[0047] The circumference of the second pipe frame 222, which is an elongated body, when the longitudinal direction is taken as the axis, is covered by the fitting portion 66, as shown in Figures 4 to 8 and 10, with the first surface 222A being the lower surface of the second pipe frame 222 made of a square pipe, the second surface 222B being the upper surface, and the third surface 222C being the front surface in the direction of travel. The fitting portion 66 has a contact portion 67 on the front side in the traveling direction, with which the restricting portion 64 can come into contact.

[0048] The restricting portion 64 will now be described. The cover member 63 is provided with a regulating portion 64 that can abut against an abutment portion 67 provided between the holding members 65, and when the cover member 63 and the pivot shaft 61 are fixed together, the rotation range of the second soil-recovering body 43 around the pivot shaft 61 is limited. The cover member 63, located in front of the fitting portion 66, is provided with a restricting portion 64. The restricting portion 64 is configured to be able to abut against an abutting portion 67 formed on the front surface of the fitting portion 66. The restricting portion 64 has a first restricting portion 641 that restricts the cover member 63 from pivoting in one direction and a second restricting portion 642 that restricts the cover member 63 from pivoting in the other direction. That is, the first restricting portion 641 restricts pivoting in one direction, which is the direction in which the mounding body 43 pivots when the load it receives is small, and the second restricting portion 642 restricts pivoting in the other direction, which is the direction in which the mounding body 43 pivots when the load it receives is large. When the pivot shaft 61 is inserted into the boss portion 68, the cover member 63 can pivot within the range between the first restricting portion 641 abutting against the abutting portion 67 and the second restricting portion 642 abutting against the abutting portion 67. When the first restricting portion 641 and the second restricting portion 642 rotate, they come into contact with an abutment portion 67 located at the rear of the holding member 65, thereby restricting the rotation. The cover member 63 can rotate around the rotation axis 61 within a rotation range defined by the first restricting portion 641 and the second restricting portion 642. In the embodiment, the second mounding body 43 is described as being provided with the above-mentioned pivot mechanism, but the first mounding body 42 or the third mounding body (not shown) may also be provided with it. Also, in the embodiment, the second mounding body 43 is described as being provided with the above-mentioned fitting portion 66, but the first mounding body 42 or the third mounding body (not shown) may also be provided with it.

[0049] A flow straightening section 432 is provided at the bottom of the mounding body. In the embodiment, it is assumed that the flow straightening section 432 is provided at the second mounding body 43. The flow straightening portion 432 is provided so as to continue rearward from the lower end of the piling surface 431, which is the surface on which the second piling body 43 moves soil laterally. The flow straightening portion 432 is a plate-shaped member, and is provided so that mud can pass below the flow straightening portion 432.

[0050] A guide surface 433 is provided on the lower surface of the flow straightening portion 432 to straighten the flow of soil flowing below the piling surface 431 and to guide the mud. The guide surface 433 is provided horizontally to the ground, and the flow straightening section 432 is provided continuously from the lower end of the pile-up surface 431. In other words, the pile-up surface 431 and the guide surface 433 are provided continuously. In the embodiment, the flow straightening section 432 is provided so that the guide surface 433 is bent backward at a substantially right angle relative to the pile-up surface 431. The guide surface 433 is provided vertically and horizontally relative to the pile-up surface 431. Since the piling surface 431 and the guide surface 433 are formed continuously, no unevenness that would cause mudflow to stagnate is formed, and therefore the mudflow passing below the piling surface 431 can be guided rearward without unnecessarily disturbing it. Furthermore, there are no limitations on the method of forming the guide surface 433 by bending it, such as the bending radius or the number of folds, as long as the rear end of the guide surface 433 faces rearward.

[0051] The flow straightening section 432 prevents the mudflow passing below the second mounding body 43 from becoming turbulent. Without the flow straightening section 432, the mudflow passing below the mounding body would become turbulent, and the mud would swell significantly behind the mounding body. The turbulence caused by the swell could scoop out the mud behind the mounding body, reducing the leveling performance of the mounding body. The flow straightening section 432 prevents the mudflow passing below the mounding body from becoming turbulent. In other words, by suppressing the swell of mud behind the mounding body, the leveling performance of the second mounding body 43 is improved. The flow straightening section 432 has a guide surface 433 with a guide distance L extending from the front piling surface 431 toward the rear, and is arranged so that the rear end of the flow straightening section 432, which is the rear end of the guide distance L, reaches the front part of the soil crushing section 3. As the muddy water passes from the front to the rear in the direction of travel along the underside of the guide surface 433 with the guide distance L, swells of mud are suppressed and the flow becomes more stable. Note that the guide distance L is not limited to that shown in the figure and can be freely changed depending on the soil quality, conditions of use, and environment.

[0052] As shown in FIG. 13 , the rear end of the flow straightening portion 432 in the embodiment is linear in plan view, but this is not limiting. As shown in FIGS. 14 and 15 , which illustrate other embodiments, forming the rear end into a corrugated or mountain-shaped configuration can stagger the timing at which muddy water flowing along the underside of the flow straightening portion 432 separates from the rear end underside of the rear end when it reaches the rear end of the flow straightening portion 432. By forming the rear end into a corrugated or mountain-shaped configuration as shown in FIGS. 14 and 15 , the rear end gradually separates muddy water from the forward-recessed valley portion to the rearward-recessed peak portion, thereby further improving the smoothing of the muddy water flow without disrupting the muddy flow. Furthermore, although the illustrations in FIGS. 14 and 15 illustrate multiple corrugated or mountain-shaped protrusions, the same effect can be achieved with a single corrugated or mountain-shaped protrusion. In the embodiment, the flow straightening section 432 is described as being provided in the second mounding body 43, but it may also be provided in the first mounding body 42 or the third mounding body (not shown). In this case, the mudflow passing under the mounding body is further regulated, which is expected to improve leveling performance after the mounding body has passed.

[0053] The second pipe frame 222, which is a long body, will now be described in further detail. The second pipe frame 222 of this embodiment is made up of square pipes with a rectangular cross section. Since the elongated body has a rectangular cross section, by fixing the fixture 71 and the fitting portion 66 with the fastening member 70, the elongated body cannot move in the circumferential direction around the longitudinal direction of the axis. As described above, since the soil piling body (second soil piling body 43) is fixed in position relative to the soil crushing section 3 in all directions, front to back, left to right, top to bottom, it becomes possible to stably perform soil piling work using the soil piling body (second soil piling body 43). In the illustration, the second soil piling body 43 is described as being attached to the second pipe frame 222, but the first soil piling body 42 and third soil piling body (not shown) can also be installed on the second pipe frame 222.

[0054] The fixture 71 will now be described. The soil-collecting body is provided with a fixing device 71 that enables the fitting portion 66 to be fixed and released from the elongated body. The fixing member 71 is provided so as to be wide in the longitudinal direction of the elongated body. The fixture 71 is located on the fourth surface 222D of the second pipe frame 222 made of a square pipe. The other surfaces of the second pipe frame 222, namely, the first surface 222A, the second surface 222B, and the third surface 222C, are covered by the fitting portion 66. Fixing device 71 is a plate-like member, and is provided so as to contact fourth surface 222D. The lower end of fixing device 71 is bent toward third surface 222C, and the bent tip reaches below first surface 222A. The fixing device 71 is arranged so that a locking portion 72 provided on one side, which is the lower side, is hooked onto a protruding upper portion 73 at the bottom of the fitting portion 66, and the other side, which is the upper side, is fastened with a fastening member 70 provided on the upper portion of the fitting portion 66. In other words, since the fastening members 70 are concentrated on the second surface 222B side, which is the upper portion of the second pipe frame 222, it is easy for an operator to access the fastening members 70 with their hands or tools from the third surface 222C side via the second surface 222B.

[0055] The gap 75 provided between the fitting portion 66 and the fixture 71 will now be described. A small gap 75 is provided between the fitting portion 66 on the second surface 222B side and the fixture 71. By providing this gap 75, the gap 75 is reduced when the fitting portion 66 and the fixture 71 are fastened together with the fastening member 70. That is, the fixing device 71 and the fitting portion 66 bend slightly so as to approach each other. With this configuration, the third surface 222C and the fourth surface 222D are tightly sandwiched between the fitting portion 66 and the fixing device 71. Therefore, friction between the fitting portion 66 and the fixing device 71, which contact the second pipe frame 222 of the long body, increases. As a result, the fitting portion 66 cannot move in the longitudinal direction of the second pipe frame 222 of the long body, and the mounding body cannot move in the longitudinal direction of the second pipe frame 222 of the long body either. The fixing device 71 and the fitting portion 66 are provided wide in the longitudinal direction of the elongated body. Therefore, when the fitting portion 66 and the fixing device 71 are tightly fixed together, it is possible to avoid localized pressure contact between the elongated body and the second pipe frame 222, and to prevent damage to the elongated body. At the same time, the wide width increases friction with the elongated body, allowing for even greater integral fixation with the elongated body.

[0056] The protruding portion 73 will now be described. A protrusion 73 is provided at the bottom of the fitting portion 66, protruding downward from the fitting portion 66. The protrusion 73 is located at the middle in the front-to-rear direction on the first surface 222A side of the second pipe frame 222, which is an elongated body. A plurality of protrusions 73 are provided at multiple locations spaced apart in the longitudinal direction of the elongated body. In the embodiment, two protrusions 73 are provided, one at each of the left and right ends in the traveling direction, and each is formed by bending downward the rear end of the fitting portion 66, which is formed from a plate-shaped member.

[0057] The locking portion 72 will now be described. The locking portion 72 of the fixing device 71, located on the first surface 222A side of the elongated body, is a rod-shaped member that can be locked onto a protrusion 73 provided on the fitting portion 66. The locking portion 72 is provided from the tip of the lower portion of the fixing device 71 toward the protrusion 73. By locking the locking portion 72 to the front surface of the protrusion 73, the fixing device 71 is restricted from moving toward the fourth surface 222D, i.e., rearward in the direction of travel. The fixing device 71 is disposed between the protrusions 73 of the locking portion 72 and extends upward, and is integrated with the fitting portion 66 by fastening its upper portion with the fastening member 70. In other words, the fixing device 71 and the fitting portion 66 can be fixed to the elongated body simply by locking one side with the locking portion 72 and fastening the other side.

[0058] The fastening member 70 will now be described. The fastening member 70 is located on the second surface 222B side of the second pipe frame 222, which is an elongated body, and by fixing it together with the fitting portion 66, it is made impossible for the soil-removing body (second soil-removing body 43) to move relative to the second pipe frame 222, which is an elongated body. The fastening member 70 is disposed offset from the holding member 65 in the longitudinal direction of the second pipe frame 222, which is an elongated body.

[0059] The fastening member 70 on the upper part of the fixture 71 is located on the second surface 222B side, and is fixed to the fitting portion 66 and the fixture 71 by passing it through holes provided in the fitting portion 66 and the fixture 71. In the embodiment, a bolt and a nut are used as the fastening member 70. In the embodiment, the fastening members 70 are provided at two locations spaced apart in the longitudinal direction of the second pipe frame 222, which is an elongated body, but the number is not limited. Fastening member 70 is provided offset to the side from holding member 65 that holds the pivot shaft of the mound when viewed from the front in the direction of travel (i.e., when viewed from the third surface 222C side). Therefore, when accessing fastening member 70 from the third surface 222C side, pivot shaft 61 and holding member 65 do not get in the way, further improving ease of assembly and maintenance.

[0060] The operation of the mounding bodies (first mounding body 42, second mounding body 43 and third mounding body (not shown)) will be described. Here, the explanation will be given assuming that it is the second mounding body 43 equipped with a rotation mechanism. As the second mounder 43 advances, it receives a load such that the side opposite the attachment position of the pivot shaft 61 is pressed rearward in the direction of advancement. In other words, as the second mounder 43 receives a load from the mud due to its advance, the pivot shaft 61 receives a force that rotates it in the direction opposite to the direction in which it is biased by the elastic member 62. As the speed increases, the resistance from the mud increases, and eventually, when the load the mound receives on its rear side exceeds the bias force of the elastic member 62, the second mounder 43 pivots rearward, with the pivot shaft 61 as the fulcrum.

[0061] The load that the rear side of the mounding body receives varies depending on the amount of immersion of the second mounding body 43 in the mud, the moving speed, and the viscosity of the mud. Therefore, the operator can adjust the load that the rear side of the second mounding body 43 receives by changing the relative height of the mounding surface 431 with respect to the soil crushing section 3. The height of the mounding surface 431 is adjusted by removing the fixing member 69 from the boss portion 68 and the rotating shaft 61. When the fixing member 69 is removed, the rotating shaft 61 can be moved up and down relative to the holding member 65. The rotating shaft 61 has holes 74b spaced apart in multiple locations, so the height of the mounding body can be changed by aligning the holes 74b of the desired rotating shaft 61 with the holes 74a of the boss portion 68 and inserting the fixing member 69.

[0062] The mounding body, which is fixed to the pivot shaft 61 by the fixing member 69, has its rotation range limited by the restricting member 64. It is constantly biased in one direction around the pivot shaft 61 by the elastic member 62, but rotation in one direction is restricted by the first restricting member 641. Therefore, when there is no load from mud, the angle of the mounding surface 431 can be maintained constant. Furthermore, even if the mounding body rotates in the other direction due to the load of mud, the rotation in that direction is restricted by the second restricting member 642. Therefore, even when it receives a load from mud, the mounding body does not continue to rotate, and the mounding effect on the mounding surface 431 can be maintained.

[0063] Explain about road tracks (ruts). As the speed of the traveling machine increases, the mud is pushed away by the sides of the traveling section of the traveling machine. In other words, as the speed of the traveling machine increases, the mud moves farther away from its original location due to its momentum. In order to return this displaced mud to its original position, in this embodiment, as the working speed increases, the second mounding body 43 is designed so that its projected area as seen from the direction of travel increases due to the load caused by the advancing speed of the mud. In other words, as the working speed increases, the distance between the side portion on which the pivot shaft 61 is attached and the side portion opposite the side portion on which the pivot shaft 61 is attached increases as seen from the direction of travel. Because the side portion opposite the side portion on which the pivot shaft 61 is attached can be positioned laterally of the pivot shaft 61, the displaced mud can be returned to its original position, the traveling tracks (ruts).

[0064] When the fixing member 69 is removed, the pivot shaft 61 can pivot independently of the boss portion 68 of the cover member 63 and the boss of the holding member 65. Even when the fixing member 69 is passed through the boss portion 68 and the hole 74 of the pivot shaft 61, the position can be freely adjusted in the axial direction, so the fixing member 69 can be easily passed through the hole 74.

[0065] Furthermore, when the cover member 63 has the fixing member 69 removed and the pivot shaft 61 is inserted into the boss portion 68, the elastic member 62 biases the pivot shaft 61 to rotate in one direction, but the restricting portion 64 (first restricting portion 641) prevents the pivoting in one direction. Therefore, when adjusting the height of the mounding body, the hole 74 of the pivot shaft 61 and the hole 74 of the boss portion 68 can be easily aligned.

[0066] The cover member 63 can be easily moved to a location other than on the axis of the pivot shaft 61 by pulling the pivot shaft 61 out of the boss portion 68. In other words, the cover member 63 is provided so as to be positioned on the axis of the pivot shaft 61 and between the holding members 65 simply by inserting the pivot shaft 61 into the boss portion 68. Therefore, when the pivot shaft 61 is removed, the cover member 63 can be easily removed from the holding members 65. This structure does not require any additional fixing or fastening members for positioning the cover member 63 between the holding members 65, thereby simplifying the configuration. Furthermore, in this embodiment, a coil spring is used as the elastic member 62, so the elastic member 62 located inside the cover member 63 can also be removed at the same time, further improving assembly and disassembly.

[0067] In this embodiment of the present invention, the retaining member 65 and the soil-collecting body are fixed in position relative to the soil-collecting unit by fitting the fitting portion 66 into the second pipe frame 222. However, as shown in FIG. 16 , the retaining member 65 can also be fixed directly to the cover body 4 that covers the soil-collecting unit 3. In this example, an attachment portion is provided at the rear of the retaining member 65 for attaching the retaining member 65 to the front of the cover body 4. The attachment portion may be permanently fixed to the cover body 4 by welding or the like, or may be provided detachably with fastening members such as bolts and nuts. With this configuration, the soil-collecting body, which rotates around the pivot shaft 61, can be positioned in front of the soil-collecting unit 3 and can also rotate around the pivot shaft 61. The agricultural work machine does not necessarily have the second pipe frame 222. Even in such an agricultural work machine, if the cover body 4 is provided, the position of the mounding body can be fixed relative to the soil crushing section 3. In this case, the fitting portion 66 and the fixing device 71 are omitted, and the mounding body can be configured more simply. [Explanation of symbols]

[0068] 1. Plowing machine (traveling body) 3 Crushing section 32 Cultivating Claw 42 First mound body 42 43 Second earth-removal body (earth-removal body) 61 Swivel axis 62 Elastic member 63 Cover member 64 Regulatory Department 431 Earthing surface 432 Rectifier 433 Guideway

Claims

1. and a horizontally rotatable soil-removing body located behind the traveling body and capable of moving soil to the traveling trace formed by the traveling body to erase the traveling trace, The soil-collecting body has a soil-collecting surface that moves soil laterally in the direction of travel, A straightening section disposed at the lower end of the soil-piling surface and facing rearward, the straightening section having a guide surface for arranging the flow of soil flowing below the soil-piling surface; Equipped with This agricultural work machine is characterized in that the mounding body rotates horizontally due to the load from the mud as it advances, is biased to rotate in one direction, and returns to its original position when the load is released.

2. An agricultural implement as described in claim 1, characterized in that the force to rotate in one direction is exerted by an elastic member.

3. The guide surface is provided in a horizontal direction.

3. The agricultural machine according to claim 1 or 2.

4. The guide surface is provided in a direction perpendicular to the soil-raising surface.

3. The agricultural machine according to claim 1 or 2.

5. The rectifying portion is formed so as to be continuous with the soil-raising surface.

3. The agricultural machine according to claim 1 or 2.

Images