Agricultural working machine

Abstract

To reduce the load of a working rotor without deteriorating soil crushing performance in an agricultural working machine in which a plurality of disks are arranged in front of the working rotor.SOLUTION: An agricultural work machine includes a work rotor including a plurality of tilling claws disposed along an axial direction of a rotation shaft, a disc unit disposed in front of the work rotor and including a plurality of discs each rotatably supported, and a roller disposed behind the work rotor and rotatably supported. A plowing width of the disk unit may be wider than a plowing width of the work rotor.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an agricultural implement, and more particularly to an agricultural implement in which a plurality of discs are arranged in front of a work rotor that tills a field. [Background technology]

[0002] Rotary implements have traditionally been known as agricultural implements used for tilling fields. While rotary implements excel in soil-breaking and plowing performance, they require a large amount of power, limiting the speed at which the tractor can be driven. On the other hand, there is an agricultural implement known as a disc harrow that can be used to increase the tractor's speed. While disc harrows can be towed at speeds more than twice as fast as rotary implements, their leveling and soil-breaking performance is inferior to that of rotary implements, making them unsuitable for tasks such as creating seedbeds.

[0003] One known agricultural implement that combines the advantages of the rotary implement and disc harrow described above is one in which multiple disks are arranged in front of the rotary implement (Patent Document 1). The soil tillage device described in Patent Document 1 has multiple rotatable disks arranged in front of multiple rotary tines, and the rotation of the disks divides the field as pre-treatment for tilling with the rotary tines. The soil tillage device described in Patent Document 1 aims to improve the efficiency of tilling by using the disks to reduce the resistance of the rotary tines to being driven into the field and underground resistance through pre-treatment. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 57-96608 Summary of the Invention [Problem to be solved by the invention]

[0005] The soil tillage device described in Patent Document 1 has a large gap between the disk body and the rotary tines, which reduces the driving resistance of the rotary tines into the field and the resistance underground, but impairs soil-breaking performance. Furthermore, residual tillage remains in the field after plowing (causing unevenness on the field surface). Sowing seeds in such a field reduces the field's levelness, which may adversely affect seed germination and seedling growth. Therefore, there is a need for an agricultural implement suitable for creating seedbeds.

[0006] One of the objects of the present invention is to reduce the load on the work rotor without impairing soil crushing performance in an agricultural work machine in which multiple disks are arranged in front of the work rotor. [Means for solving the problem]

[0007] An agricultural work machine according to one embodiment of the present invention comprises a work rotor including a plurality of tillage tines arranged along the axial direction of a rotating shaft, and a disk unit arranged in front of the work rotor and including a plurality of disks each rotatably supported, wherein the plurality of tillage tines include a first tillage tine that curves toward a first axial direction and a second tillage tine that curves toward a second direction opposite to the first direction, the work rotor includes a first portion in which adjacent first tillage tines and second tillage tines are arranged with a gap between them so that their rotation ranges do not overlap, one of the plurality of disks is arranged in front of the first portion, and when viewed from the front, the rotation range of the disk overlaps with at least one of the rotation range of the first tillage tine and the rotation range of the second tillage tine.

[0008] In a plan view, when the agricultural work machine travels, a rotation range of the disk may overlap with at least one of a rotation range of the first tillage tine and a rotation range of the second tillage tine.

[0009] The work rotor may further include a second portion in which the first tillage tine and the second tillage tine, which are adjacent to each other, are arranged so that their rotation ranges overlap. In this case, the disk does not need to be arranged in front of the second portion.

[0010] An agricultural work machine according to one embodiment of the present invention comprises a work rotor including a plurality of tillage tines arranged along the axial direction of a rotating shaft, and a disk unit arranged in front of the work rotor and including a plurality of disks each rotatably supported, wherein the plurality of tillage tines include a first tillage tine that curves toward a first axial direction and a second tillage tine that curves toward a second direction opposite to the first direction, and the work rotor includes a first portion in which adjacent first tillage tines and second tillage tines are arranged with a gap between them so that their rotation ranges do not overlap, and a second portion in which adjacent first tillage tines and second tillage tines are arranged so that their rotation ranges overlap, and when viewed from the front, one of the plurality of disks is arranged to overlap the gap.

[0011] An agricultural work machine according to one embodiment of the present invention comprises a work rotor including a plurality of tillage tines arranged along the axial direction of a rotating shaft, and a disk unit arranged in front of the work rotor and including a plurality of disks each rotatably supported, wherein the plurality of tillage tines include a first tillage tine that curves toward a first axial direction and a second tillage tine that curves toward a second direction opposite to the first direction, and the work rotor includes a first portion in which adjacent first tillage tines and second tillage tines are arranged with a first gap so that their rotation ranges do not overlap, and a second portion in which adjacent first tillage tines and second tillage tines are arranged with a second gap narrower than the first gap so that their rotation ranges do not overlap, and when viewed from the front, one of the plurality of disks is arranged to overlap the first gap.

[0012] The disk may not be disposed in front of the second portion.

[0013] The plurality of disks may include a first disk having a concave curved surface facing the first direction and a second disk having a concave curved surface facing the second direction. In this case, the gap between adjacent first disks and second disks may be wider than the gap between adjacent first disks or the gap between adjacent second disks.

[0014] The gap between the adjacent first and second discs may be located behind a travel means of a traveling machine body that pulls the agricultural work machine. [Effects of the Invention]

[0015] According to an embodiment of the present invention, in an agricultural work machine in which a plurality of disks are arranged in front of the work rotor, it is possible to achieve both a reduction in the load on the work rotor and maintenance of soil crushing performance. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram showing the appearance of an agricultural work machine in a first embodiment. FIG. [Figure 2] 1 is a diagram showing the appearance of an agricultural work machine in a first embodiment. FIG. [Figure 3] FIG. 2 is a diagram for explaining the positional relationship between the tiller tines and the disc of the agricultural implement in the first embodiment. [Figure 4] FIG. 2 is a diagram for explaining the positional relationship between the tiller tines and the disc of the agricultural implement in the first embodiment. [Figure 5] FIG. 2 is a diagram showing a schematic diagram of the positional relationship between the tiller tines and the disk of the agricultural implement in the first embodiment. [Figure 6] FIG. 3 is a diagram showing the relationship between the direction in which soil is thrown by the disk of the agricultural implement and the tiller tines in the first embodiment. [Figure 7] FIG. 10 is a diagram showing a schematic diagram of the positional relationship between the tiller tines and the disc of an agricultural implement in a second embodiment. [Figure 8] FIG. 10 is a diagram showing a schematic diagram of the positional relationship between the tiller tines and the disc of an agricultural implement according to a third embodiment. [Figure 9] FIG. 10 is a diagram showing a schematic diagram of the positional relationship between the tiller tines and the disc of an agricultural implement in a fourth embodiment. [Figure 10] FIG. 10 is a diagram showing a schematic diagram of the positional relationship between the tiller tines and the disc of an agricultural implement according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the agricultural work machine of the present invention will be described with reference to the drawings. However, the agricultural work machine of the present invention can be embodied in many different forms, and should not be construed as being limited to the description of the examples shown below. In the drawings referred to in this embodiment, the same parts or parts having similar functions are given the same reference numerals, and repeated explanations thereof will be omitted.

[0018] In the specification and claims of this application, "up" refers to a direction moving away from the field in a substantially vertical direction, "down" refers to a direction moving toward the field in a substantially vertical direction, "front" refers to the direction in which the agricultural implement travels, "rear" refers to the direction opposite to front, "left" refers to the left when facing the direction in which the agricultural implement travels, and "right" refers to the direction opposite to left.

[0019] Furthermore, with the axial center of the rotating shaft of the work rotor as a reference, the side closer to the center may be referred to as the "inner side" and the side farther from the center may be referred to as the "outer side."

[0020] In this specification, the term "rotation range" refers to the range covered by the path of a rotating body, such as a tine or disk, when viewed from the front or in a plan view. In other words, it can also refer to the range through which the rotating body passes when viewed from the front or in a plan view as the rotating body rotates while the agricultural implement is moving forward. For example, the range of rotation of the tine or disk that actually comes into contact with and acts on the field (tilling range) refers to the lateral width over which the tine or disk can cultivate.

[0021] First Embodiment (Configuration of agricultural machinery) The configuration of the agricultural work machine 100 of this embodiment will be described. In this embodiment, the agricultural work machine 100 is exemplified as a rotary work machine that is attached to the rear of a traveling body such as a tractor and is towed by the traveling body to cultivate a field.

[0022] Figures 1 and 2 are diagrams showing the external configuration of an agricultural work machine 100 according to a first embodiment. Specifically, Figure 1(A) is a perspective view of the agricultural work machine 100 as seen from diagonally above the front left, and Figure 1(B) is a front view of the agricultural work machine 100 as seen from the front. Also, Figure 2(A) is a bottom view of the agricultural work machine 100 as seen from below, and Figure 2(B) is a side view of the agricultural work machine 100 as seen from the left side. Note that Figures 1 and 2 show the general configuration of the agricultural work machine 100 according to this embodiment, and for ease of explanation, some components may be omitted from the illustration.

[0023] The agricultural work machine 100 of this embodiment broadly includes a mounting section 10, a tilling work section 20, a disc unit 30, and a compaction work section 40. Each section will be described below.

[0024] The mounting section 10 includes a top mast 110 and a lower link connector 115. The top mast 110 and the lower link connector 115 function as a connecting mechanism for mounting the agricultural work machine 100 to a traveling machine body (not shown), such as a tractor. In the agricultural work machine 100 of this embodiment, the top mast 110 and the lower link connector 115 may be collectively referred to as a front hitch. The front hitch is connected to the traveling machine body by a support section provided at the top of the top mast 110 and two support sections provided on both the left and right sides of the lower link connector 115.

[0025] The top mast 110 and the lower link connection part 115 are respectively connected to a top link of a traveling machine body (not shown) and lower links provided at two locations on the left and right (i.e., a three-point link hitch mechanism). When the agricultural work machine 100 is attached to the traveling machine body by the attachment part 10, power can be input from the input shaft 117. The input shaft 117 is also called a PIC (Power Input Connection) shaft, and functions as an interface that transmits power from the traveling machine body. The input shaft 117 is connected to a PTO (Power Take Off) shaft of the traveling machine body by a universal joint or the like. The agricultural work machine 100 and the traveling machine body may be connected via an auto hitch frame.

[0026] The tilling work unit 20 includes a work rotor 220 supported by a first main frame 210, a shield cover 230 that covers the top of the work rotor 220, a ground leveling member 240 that covers the rear of the work rotor 220, a compression rod 250 that functions to press the ground leveling member 240 against the field with a constant pressure, and a chain drive unit 260 that transmits power to the work rotor 220. The work rotor 220 includes a rotating shaft 222 and a plurality of tilling tines 224 arranged along the axial direction of the rotating shaft 222.

[0027] The power input from the input shaft 117 is transmitted to the chain drive unit 260 via a power transmission shaft (not shown) arranged inside the first main frame 210, and is then transmitted to the rotating shaft 222 of the work rotor 220. The chain drive unit 260 has a chain and sprockets inside a chain case, and connects the power transmission shaft with the rotating shaft 222. When the power is transmitted to the rotating shaft 222, the multiple tillage tines 224 rotate together with the rotating shaft 222. In this way, when the work rotor 220 rotates, the multiple tillage tines 224 act on the field, and tillage work is performed in the field.

[0028] The disk unit 30 includes a second main frame 310, a disk support part 320, a disk arm 330, and a disk 340. The disk support part 320 is a member fixed to the second main frame 310, and supports a plurality of disks 340. In this embodiment, an example is shown in which one disk support part 320 is provided with two disks 340, but this is not limiting, and only one disk 340, or three or more disks 340 may be supported.

[0029] The multiple discs 340 are each rotatably supported by a disc arm 330 fixed to the disc support portion 320. In this embodiment, the disc arm 330 is a plate-like member having a curved portion (or a bent portion). As shown in FIG. 1(B), the multiple discs 340 are supported so that their respective concave curved surfaces 341 face obliquely upward. Also, as shown in FIG. 2(A), the multiple discs 340 are each supported obliquely with respect to the traveling direction of the agricultural work machine 100.

[0030] By supporting the multiple disks 340 at an angle to the direction of travel, each disk 340 can excavate a wider area of ​​the field, improving the soil crushing performance of the disk unit 30. Furthermore, because the concave curved surfaces 341 of the multiple disks 340 face diagonally upward, each of the multiple disks 340 can throw soil. In this embodiment, by controlling the direction in which the multiple disks 340 throw soil, the field leveling performance is also improved.

[0031] The suppression work unit 40 includes a basket bracket 410, a roller arm 420, an angle adjustment mechanism 430, a basket roller 440, a scraper bracket 450, and a scraper 460. The basket bracket 410 is fixed to the first main frame 210 and is a bracket for supporting the basket roller 440 located at the rear. One end of the roller arm 420 is rotatably fixed to the basket bracket 410, and the other end is rotatably fixed to the basket roller 440. The angle of the roller arm 420 relative to the basket bracket 410 can be adjusted by a screw-type angle adjustment mechanism 430 that spans between them.

[0032] The basket roller 440 has a structure in which multiple bars 440b are mounted on multiple ring-shaped support members 440a, and is rotatably supported by the roller arm 420. In the agricultural work machine 100 of this embodiment, as the traveling body travels and moves forward, the basket roller 440 rotates as it moves past the tillage work unit 20. At that time, the multiple bars 440b are configured to crush and compact the soil clods in the field that has been tilled by the tillage work unit 20. The scraper 460 is arranged so that an elastic member such as rubber comes into contact with the basket roller 440, and plays a role in removing soil adhering to the basket roller 440 during compaction work.

[0033] The agricultural work machine 100 of this embodiment described above improves the soil crushing performance of the agricultural work machine 100 by devising the arrangement of the multiple tillage tines 224 on the work rotor 220 and the arrangement of the multiple disks 340 on the disk unit 30. This will be described below.

[0034] (Position of the tiller blades and the disc) Figure 3 is a diagram illustrating the positional relationship between the tiller tines 224 and the disc 340 of the agricultural work machine 100 in the first embodiment. Specifically, Figure 3(A) corresponds to an enlarged view of a portion of the bottom view of the agricultural work machine 100 shown in Figure 2(A). Figure 3(B) corresponds to an enlarged view of a portion of the second portion 220b shown in Figure 3(A).

[0035] 3(A), the work rotor 220 includes a first portion 220a and a second portion 220b. The first portion 220a is a portion where the adjacent first tillage tine 224a and second tillage tine 224b are arranged with a gap X so that their rotation ranges do not overlap. The second portion 220b is a portion where the adjacent first tillage tine 224a and second tillage tine 224b are arranged so that their rotation ranges overlap.

[0036] Here, the first tillage tine 224a refers to a tillage tine, among the multiple tillage tines 224, that curves in a first direction D1 (in this embodiment, leftward as viewed in the direction of travel) in the axial direction of the rotating shaft 222. The second tillage tine 224b refers to a tillage tine, among the multiple tillage tines 224, that curves in a second direction D2 (in this embodiment, rightward as viewed in the direction of travel) in the axial direction of the rotating shaft 222. However, when there is no need to particularly distinguish between the first tillage tine 224a and the second tillage tine 224b, they may be collectively referred to as tillage tines 224.

[0037] 3(B), in the second portion 220b, the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b partially overlap. Therefore, in the second portion 220b, the first tillage tine 224a and the second tillage tine 224b can till the field without any gaps, allowing for tillage work with high soil crushing properties.

[0038] In contrast, as shown in Figure 3(A), in the first portion 220a, the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b do not overlap. In other words, there is a gap X between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b, and therefore no tilling work is performed by the tillage tine 224 in this portion of the gap X. However, in this embodiment, as shown in Figure 3(A), at least one of the multiple discs 340 is positioned in front of the first portion 220a in line with the gap X, so the disc 340 can also crush soil in the portion corresponding to the gap X.

[0039] Furthermore, in the disk unit 30 of this embodiment, the multiple disks 340 are all supported at an angle to the traveling direction of the agricultural work machine 100, ensuring a wide rotation range for each disk 340. Therefore, even if the gap X between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b is widened, one disk 340 can crush the soil in the area corresponding to the gap X.

[0040] Here, Fig. 4 is a diagram for explaining the positional relationship between the tillage tines 224 and the disc 340 of the agricultural work machine 100 in the first embodiment. Specifically, Fig. 4 shows, in a front view, the positional relationship between the first tillage tine 224a and the second tillage tine 224b and the disc 340 during tillage work. In reality, as shown in Fig. 3(A), the disc 340 is disposed in front of the first tillage tine 224a and the second tillage tine 224b.

[0041] The state shown in Figure 4 is a schematic diagram of the first tillage tine 224a, the second tillage tine 224b, and the disk 340 tilling the field 50. Here, the portion of the rotation range of the first tillage tine 224a that actually acts on the field 50 is referred to as tillage range TW1, and the portion of the rotation range of the second tillage tine 224b that actually acts on the field 50 is referred to as tillage range TW2. Furthermore, the portion of the rotation range of the disk 340 that actually acts on the field 50 is referred to as tillage range TW3. Note that the width of the tillage range TW1 of the first tillage tine 224a and the width of the tillage range TW2 of the second tillage tine 224b may be the same or different.

[0042] As shown in Fig. 4, in a front view, the tilling range TW1 of the first tilling tine 224a and the tilling range TW2 of the second tilling tine 224b partially overlap with the tilling range TW3 of the disk 340. At this time, there is a gap X shown in Fig. 3(A) between the tilling range TW1 of the first tilling tine 224a and the tilling range TW2 of the second tilling tine 224b. That is, in this embodiment, the width of the tilling range TW3 of the disk 340 is larger than the gap X between the rotation range RW1 of the first tilling tine 224a and the rotation range RW2 of the second tilling tine 224b. Furthermore, the depth (tillage depth) at which the first tillage tine 224a and the second tillage tine 224b act in the field 50 is approximately the same as the depth (tillage depth) at which the disk 340 acts in the field 50. In other words, the lower end positions of the first tillage tine 224a and the second tillage tine 224b from the surface of the field 50 are approximately the same as the lower end position of the disk 340 from the surface of the field 50.

[0043] As described above, in this embodiment, even if a gap X exists between the adjacent first and second tillage tines 224a and 224b, the disks 340 disposed in front of the first and second tillage tines 224a and 224b can crush the portion of the field corresponding to the gap X, so the number of tillage tines can be reduced while maintaining soil crushing performance. With this configuration, the agricultural work machine 100 of this embodiment can reduce the load on the work rotor 220 without compromising soil crushing performance. Furthermore, in the agricultural work machine 100 of this embodiment, the positions of the bottom ends of the first and second tillage tines 224a and 224b from the surface of the field 50 and the bottom end of the disk 340 from the surface of the field 50 are arranged so as to approximately coincide, so that the field can be finished with a higher levelness and work suitable for creating a seedbed can be performed.

[0044] 4 shows an example in which the tilling range TW3 of the disk 340 overlaps with both the tilling range TW1 of the first tilling tine 224a and the tilling range TW2 of the second tilling tine 224b, but this is not limiting and the tilling range TW3 may overlap with either the tilling range TW1 of the first tilling tine 224a or the tilling range TW2 of the second tilling tine 224b, or may not overlap with both. Also, in this embodiment, an example is shown in which the overlapping range (also referred to as the overlap amount) between the tilling range TW1 of the first tilling tine 224a and the tilling range TW3 of the disk 340 is equal to the overlapping range between the tilling range TW2 of the second tilling tine 224b and the tilling range TW3 of the disk 340, but these amounts may be different.

[0045] Incidentally, the agricultural work machine 100 of this embodiment is configured to erase traces (ruts) of the traveling means (for example, wheels or caterpillars) of the traveling body by arranging a plurality of discs 340 and a plurality of tillage tines 224. Specifically, the discs 340 are arranged so as to sandwich the traveling traces of the traveling body, and the soil pushed aside in the first direction D1 and the second direction D2 by the traveling means is returned to the traveling traces (depressions formed in the field).

[0046] 3A, the disk unit 30 of this embodiment includes a first disk 340a and a second disk 340b. Here, the first disk 340a refers to a disk of the multiple disks 340 whose concave surface 341 faces a first direction D1. The second disk 340b refers to a disk of the multiple disks 340 whose concave surface 341 faces a second direction D2. However, when there is no need to particularly distinguish between the first disk 340a and the second disk 340b, they may be collectively referred to as disks 340.

[0047] In the agricultural work machine 100 of this embodiment, the gap W1 between adjacent first discs 340a and second discs 340b is wider than the gap W2 between adjacent first discs 340a or adjacent second discs 340b. This gap W1 is located behind the travel means of the traveling body that tows the agricultural work machine 100. In other words, the adjacent first discs 340a and second discs 340b are arranged so as to sandwich the travel trail 52 of the traveling body that tows the agricultural work machine 100.

[0048] At this time, the first disk 340a and the second disk 340b are both supported so that the concave curved surface 341 faces diagonally upward, so that the soil can be crushed in the field and thrown away. Therefore, as shown in Figure 3(A), by placing the first disk 340a and the second disk 340b on either side of the travel path 52 of the traveling body, the soil pushed aside on both sides of the travel path 52 can be returned to the travel path 52 again.

[0049] 3(A) shows an example in which adjacent first discs 340a and second discs 340b are arranged to sandwich the travel trace 52 of the traveling body that tows the agricultural work machine 100, but this is not limiting. For example, while two first discs 340a and two second discs 340b are shown in FIG. 3(A), the first disc 340a on the left side of the page (direction D2) of the two first discs 340a and the second disc 340b on the left side of the page (direction D2) of the two second discs 340b may be arranged to sandwich the travel trace 52 of the traveling body that tows the agricultural work machine 100. Furthermore, the first disc 340a on the left side of the page (direction D2) and the second disc 340b on the right side of the page (direction D1) may be arranged to sandwich the travel trace 52 of the traveling body that tows the agricultural work machine 100. Furthermore, the first disc 340a on the right side of the paper (direction D1) and the second disc 340b on the right side of the paper (direction D1) may be arranged to sandwich the travel trail 52 of the traveling body that pulls the agricultural work machine 100.

[0050] Furthermore, in the work rotor 220 of this embodiment, the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b overlap behind the gap W1 described above. That is, the second portion 220b described above is positioned so as to overlap the gap W1 between the adjacent first and second discs 340a and 340b (conversely, no disc 340 is disposed in front of the second portion 220b). In the agricultural work machine 100 of this embodiment, the disc 340 is used to return some soil to the travel tracks 52 of the traveling body, and then the travel tracks 52 are tilled by the multiple overlapping tillage tines 224, thereby making it possible to create a highly level field.

[0051] The agricultural work machine 100 of the first embodiment has been described above using Figures 1 to 4, but Figure 5 shows a schematic summary of the positional relationship between the multiple tillage tines 224 and the multiple discs 340. The reference numerals shown in Figures 3(A) and 3(B) correspond to the reference numerals shown in Figure 5. As shown in Figure 5, in this embodiment, the first disc 340a and the second disc 340b are arranged outside the rotation shaft 222. Therefore, with the configuration shown in Figure 5, it is possible to ensure that the width that can be tilled by the disc unit 30 is wider than the width that can be tilled by the work rotor 220.

[0052] 5, in a plan view, the first disc 340a is positioned so that the rotation range RW3 of the first disc 340a partially overlaps with both the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b when the agricultural work machine 100 moves forward. A gap X is present between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b. In other words, the first disc 340a is positioned in front of the gap X.

[0053] The rotation range RW1 of the first tillage tine 224a is a rectangle defined by the long and short sides, where the long side is the diameter of an imaginary circle that is the rotation trajectory of the first tillage tine 224a when the first tillage tine 224a rotates, and the short side is the height of the first tillage tine 224a. Similarly, the rotation range RW2 of the second tillage tine 224b is a rectangle defined by the long and short sides, where the long side is the diameter of an imaginary circle that is the rotation trajectory of the second tillage tine 224b when the second tillage tine 224b rotates, and the short side is the height of the second tillage tine 224b. Furthermore, the rotation range RW3 of the first disc 340a is a rectangle that is a circumscribed rectangle (the smallest rectangle that can include the outline) when the first disc 340a is viewed in plan.

[0054] Thus, in this embodiment, even if a gap X exists between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b, the first disk 340a arranged in front of the gap X can crush the soil without leaving only the part of the field corresponding to the gap X as a streak (residual tillage).

[0055] 5 shows an example in which, in a plan view, the rotation range RW3 of the first disc 340a overlaps with each of the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b when the agricultural work machine 100 moves forward, but this is not limiting, and the rotation range RW3 may overlap with either the rotation range RW1 of the first tillage tine 224a or the rotation range RW2 of the second tillage tine 224b, or may not overlap with both. Also, in this embodiment, an example is shown in which the range of overlap (also referred to as the overlap amount) between the rotation range RW1 of the first tillage tine 224a and the rotation range RW3 of the first disc 340a is different from the range of overlap between the rotation range RW2 of the second tillage tine 224b and the rotation range RW3 of the first disc 340a. However, the two may be equal.

[0056] In this embodiment, two first discs 340a and two second discs 340b are arranged so that the concave surfaces 341 face each other across the travel track 52 of the traveling body, but the present invention is not limited to this configuration. However, it is desirable to arrange the concave surfaces 341 of the outermost discs 340 so that they face inward when the disc unit 30 is used to break up the soil in the field, so that the soil is directed toward the work rotor 220.

[0057] Furthermore, as described above, the multiple disks 340 have the concave curved surfaces 341 facing diagonally upward, and therefore have the function of throwing soil. Therefore, when the disk unit 30 crushes the soil in the field, the soil is thrown by the disks 340, causing the soil to move. In this case, if the soil moves significantly toward the outside of the agricultural work machine 100, there is a risk that the leveling of the field will be impaired. Therefore, in this embodiment, the direction in which the soil is thrown by the multiple disks 340 is taken into consideration, and the movement of the soil is suppressed.

[0058] Figure 6 is a diagram showing the relationship between the direction in which soil is thrown by the disc 340 of the agricultural work machine 100 and the tillage tines 224 in the first embodiment. As shown in Figure 6, in this embodiment, soil thrown by the disc 340 is forcibly returned to the field by the tillage tines 224 midway (before falling into the field). In other words, at frame line 55 shown in Figure 6, the thrown soil hits the tillage tines 224 rotating in the down-cut direction and is dropped into the field. This makes it possible to prevent the soil from moving significantly, even when the disc 340 throws the soil in the second direction D2.

[0059] The direction and distance in which the disk 340 throws the soil vary depending on various parameters, such as the vehicle speed of the traveling machine body, the angle of the disk 340 relative to the direction of travel, the direction in which the concave curved surface 341 faces, and the distance between the disk 340 and the tines 224. However, under any conditions, it is preferable that the thrown soil be dropped by the tines 224 during the throwing process and returned to the field, as described above.

[0060] Second Embodiment In the second embodiment, an example will be described in which the arrangement of the disks 340 and the tillage tines 224 is different from that of the first embodiment. For the sake of convenience, the same elements as those in the first embodiment will be given the same reference numerals and explanations thereof will be omitted.

[0061] Figure 7 is a diagram illustrating the positional relationship between the tillage tines 224 and discs 340 of an agricultural work machine in the second embodiment. As shown in Figure 7, in this embodiment, there is no portion equivalent to the second portion 220b in the first embodiment, and the first portion 220a is disposed in the axial direction of the rotation shaft 222. Therefore, the number of tillage tines 224 provided on the work rotor 220 can be reduced compared to the first embodiment, and the load on the work rotor 220 can be reduced.

[0062] On the other hand, since the disks 340 are disposed in front of each of the first portions 220a, the portions of the first portions 220a corresponding to the gaps X are also crushed. Therefore, the load on the work rotor 220 can be reduced while maintaining soil crushing performance.

[0063] In this embodiment, a plurality of first disks 340a are arranged from the axial center of the rotation shaft 222 toward the first direction D1, and the left end of the disk unit 30 is the second disk 340b. Conversely, a plurality of second disks 340b are arranged from the center toward the second direction D2, and the right end of the disk unit 30 is the first disk 340a. However, this is not a limitation, and all disks from the center toward the first direction D1 may be second disks 340b, and all disks from the center toward the second direction D2 may be first disks 340a.

[0064] Furthermore, if the tillage tines 224 are arranged along the rotation shaft 222 so that the gaps X in the first portions 220a are larger than in this embodiment, the number of tillage tines 224 can be reduced compared to this embodiment. Reducing the number of tillage tines 224 naturally reduces the number of gaps X, and the number of discs 340 arranged in front of the first portions 220a also decreases. This further reduces the load on the work rotor 220 and enables faster work.

[0065] Third Embodiment In the third embodiment, an example will be described in which the arrangement of the disks 340 and the tillage tines 224 is different from that of the first embodiment. For the sake of convenience, the same elements as those in the first embodiment will be given the same reference numerals and explanations thereof will be omitted.

[0066] Figure 8 is a diagram illustrating the positional relationship between the tillage tines 224 and the discs 340 of the agricultural work machine in the third embodiment. As shown in Figure 8, in this embodiment, similar to the second embodiment, the first portions 220a are arranged in the axial direction of the rotation shaft 222. Therefore, similar to the second embodiment, the number of tillage tines 224 can be reduced compared to the first embodiment, thereby reducing the load on the work rotor 220.

[0067] Also, similar to the second embodiment, a disk 340 is disposed in front of each of the first portions 220a. Therefore, in this embodiment, the portions of the first portions 220a corresponding to the gaps X are crushed, so that the load on the work rotor 220 can be reduced while maintaining the soil crushing performance.

[0068] This embodiment differs from the second embodiment in that a first disk 340a and a second disk 340b are provided at both left and right ends of the disk unit 30 so that the concave curved surfaces 341 face inward, and the first disk 340a and the second disk 340b are arranged in pairs between them. Specifically, the first disk 340a is provided at the end of the disk unit 30 in the second direction D2, and the second disk 340b is provided at the end of the disk unit 30 in the first direction D1. A plurality of pairs 60 of the first disk 340a and the second disk 340b are arranged between them, with the concave curved surfaces 341 facing each other.

[0069] With this configuration, the first disc 340a throws soil in the first direction D1, and the second disc 340b throws soil in the second direction D2, which reduces soil movement overall and maintains the evenness of the field after tilling work.

[0070] Furthermore, if the tillage tines 224 are arranged along the rotation shaft 222 so that the gaps X in the first portions 220a are larger than in this embodiment, the number of tillage tines 224 can be reduced compared to this embodiment. Reducing the number of tillage tines 224 naturally reduces the number of gaps X, and the number of discs 340 arranged in front of the first portions 220a also decreases. This further reduces the load on the work rotor 220 and enables faster work.

[0071] <Fourth embodiment> In the fourth embodiment, an example will be described in which the arrangement of the disks 340 and the tillage tines 224 is different from that of the first embodiment. For the sake of convenience, the same elements as those in the first embodiment will be given the same reference numerals and explanations thereof will be omitted.

[0072] 9 is a diagram illustrating the positional relationship between the tiller tines 224 and discs 340 of an agricultural work machine in the fourth embodiment. In the fourth embodiment, as in the first embodiment, a gap W3 is provided between the first disc 340a and the second disc 340b so as to sandwich the travel trail (not shown) of the traveling body. The gap W3 is wider than the gap W4 between adjacent first discs 340a or second discs 340b. In the present embodiment, as in the first embodiment, soil can be efficiently returned to the travel trail of the traveling body, and the levelness of the field can be maintained.

[0073] Also, as in the first embodiment, there is a gap X between the adjacent first and second tillage tines 224a and 224b, and a disk 340 is disposed in front of the first and second tillage tines 224a and 224b. Therefore, in this embodiment, the part of the field that corresponds to the gap X can also be crushed, so the number of tillage tines can be reduced while maintaining soil crushing performance. With this configuration, the load on the work rotor 220 can be reduced without impairing soil crushing performance.

[0074] Here, this embodiment differs from the first embodiment in that the rotation ranges of the first tillage tine 224a and the second tillage tine 224b do not overlap behind the gap W3. Specifically, in the example shown in FIG. 9, a gap X2 is provided between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b in the portion corresponding to the second portion 220b of the first embodiment shown in FIG. 5. In this case, the width of the gap X2 is preferably narrower than the width of the gap X. Specifically, the width of the gap X2 is preferably greater than zero and smaller than the width of the gap X.

[0075] If there is a gap between the rotation range RW1 of the first tillage tine 224a and the rotation range RW2 of the second tillage tine 224b behind the gap W3 provided in the disk unit 30, there is a risk that that portion will not be tilled and will remain as a streak. However, if the width of that gap is sufficiently small, the possibility of streaks remaining can be almost ignored, so it can be said that as long as the width of the gap X2 is greater than zero and smaller than the width of the gap X, soil crushing performance will not be impaired.

[0076] Fifth Embodiment The fifth embodiment is an example in which the number of disks 340 and the number of tillage tines 224 are reduced compared to the fourth embodiment. For the sake of convenience, the same elements as those in the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0077] FIG. 10 is a diagram illustrating the positional relationship between the tines 224 and the discs 340 of the agricultural work machine in the fifth embodiment. As shown in FIG. 10, in this embodiment, as in the fourth embodiment, a gap W5 is provided between the first disc 340a and the second disc 340b so as to sandwich the travel trace (not shown) of the traveling body. In this case, the gap W5 is wider than the gap W6 between adjacent first discs 340a or between adjacent second discs 340b. Also, as in the fourth embodiment, the rotation ranges of the first tine 224a and the second tine 224b do not overlap behind the gap W5, and a gap X2 is provided between the rotation ranges of the first tine 224a and the second tine 224b.

[0078] In this embodiment, the number of first portions 220a is fewer than in the fourth embodiment, and therefore the number of disks 340 arranged in front of the first portions 220a is also fewer than in the fourth embodiment. Therefore, the work rotor 220 as a whole has fewer tines 224 and disks 340 than in the fourth embodiment. Therefore, by reducing the number of tines 224 compared to the fourth embodiment, the load on the work rotor 220 is further reduced. Of course, because disks 340 are arranged in front of each of the first portions 220a, the portion corresponding to the gap X1 is also crushed. Therefore, according to this embodiment, the load on the work rotor 220 can be reduced and work can be performed faster.

[0079] The present invention has been described above with reference to the drawings, but the present invention is not limited to the above-described embodiments and can be modified as appropriate within the scope of the invention. [Explanation of symbols]

[0080] 10...mounting part, 20...cultivation work part, 30...disc unit, 40...compaction work part, 50...field, 52...travel trace, 100...agricultural implement, 110...top mast, 115...lower link connecting part, 117...input shaft, 210...first main frame, 220...work rotor, 220a...first part, 220b...second part, 222...rotating shaft, 224...cultivation tine, 224a...first cultivating tine, 224b...second cultivating tine, 230...shield cover, 240...ground leveling member, 250...Compression rod, 260...Chain drive unit, 310...Second main frame, 320...Disc support unit, 330...Disc arm, 340...Disc, 340a...First disc, 340b...Second disc, 341...Concave curved surface, 410...Basket bracket, 420...Roller arm, 430...Angle adjustment mechanism, 440...Basket roller, 440a...Support member, 440b...Bar, 450...Scraper bracket, 460...Scraper

Claims

1. A working rotor including multiple tilling tines arranged along the axial direction of the rotating shaft, A disk unit comprising a plurality of disks positioned in front of the aforementioned work rotor and each disk being rotatably supported, A farming machine equipped with, In a front view, the tilling tines are positioned in all of the gaps between adjacent disks in the axial direction, in an agricultural implement.

2. The agricultural implement according to claim 1, wherein, in a front view, the tilling tines positioned in the gap between adjacent discs in the axial direction include a first tilling tine that curves in a first direction with respect to the axial direction and a second tilling tine that curves in a second direction opposite to the first direction.

3. Each of the aforementioned plurality of disks has a concave curved surface, The disk unit includes two adjacent disks with their concave surfaces facing each other. The agricultural implement according to claim 1, wherein, in a front view, a plurality of tilling tines spaced apart in the axial direction are arranged in the gap between the two adjacent discs whose concave surfaces face each other.

4. The agricultural implement according to claim 3, wherein the plurality of tilling tines spaced apart in the axial direction and arranged in the gap between the two disks include a first tilling tine that curves in a first direction with respect to the axial direction and a second tilling tine that curves in a second direction opposite to the first direction.

5. The agricultural implement according to claim 4, wherein at least two of the plurality of tilling tines spaced apart in the axial direction are the first tilling tine and the second tilling tine, which are arranged adjacent to each other with their curvature directions facing each other.

6. The agricultural implement according to claim 1, wherein, in a front view, the tilling range of the tilling claws positioned in the gap between two axially adjacent discs partially overlaps with the tilling range of at least one of the discs.

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