Agricultural machinery

Abstract

In an agricultural implement with multiple tilling components positioned in front of the working rotor, the objective is to achieve both a reduction in the load on the working rotor and the maintenance of tilling performance. [Solution] The agricultural implement comprises a working rotor including a plurality of tilling tines arranged along the axial direction of the rotating shaft, a plurality of tilling members positioned in front of the working rotor, and a crushing member located between two adjacent tilling members in a plan view. At least a portion of the gap between the two adjacent tilling members may be located behind the running means of the traveling body that tows the agricultural implement.

Description

Technical Field

[0001] One embodiment of the present invention relates to an agricultural working machine. In particular, it relates to an agricultural working machine in which a plurality of tilling members are arranged in front of a working rotor for tilling a field.

Background Art

[0002] Conventionally, a rotary working machine is known as an agricultural working machine for performing tilling work on a field. Although the rotary working machine has excellent soil crushing performance and digging performance, it requires a large amount of power and has a limit in increasing the vehicle speed of the tractor. On the other hand, there is an agricultural working machine called a disk harrow among agricultural working machines that can increase the vehicle speed of the tractor. The disk harrow can work at a vehicle speed more than twice that of the rotary working machine, but its leveling performance and soil crushing performance are inferior to those of the rotary working machine, so it is not suitable for purposes such as preparing a sowing bed.

[0003] As an agricultural working machine that combines the advantages of the above-mentioned rotary working machine and disk harrow, an agricultural working machine in which a plurality of disks are arranged in front of the rotary working machine is known (Patent Document 1). The soil tilling device described in Patent Document 1 rotatably provides a plurality of disk bodies in front of a plurality of rotary claws, and by the rotational action of the plurality of disk bodies, the field is cut as a pretreatment for the tilling work by the rotary claws. The soil tilling device described in Patent Document 1 aims to reduce the driving resistance and underground resistance of the rotary claws against the field by using the pretreatment by the disk bodies, and to improve the working efficiency of the tilling work.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When a tractor or other vehicle passes over a field, a track is left behind. This track is characterized by compacted soil due to the pressure of the wheels and is also depressed. The soil tillage device described in Patent Document 1 is mounted on the rear of the vehicle, so it operates (tilles) while moving over fields where such a track has been formed. In this case, even when tilling is performed with the soil tillage device, the soil compacted by the wheels of the vehicle cannot be properly tilled, resulting in uneven soil in the track and poor drainage. Therefore, if the tillage depth is increased to till the soil layer compacted by the wheels of the vehicle in order to improve soil uniformity and eliminate drainage problems, the workload on the rotary tiller increases, making it impossible to increase the tractor's speed.

[0006] One of the objectives of the present invention is to achieve both a reduction in the load on the working rotor and the maintenance of tilling performance in an agricultural implement in which multiple tilling members are arranged in front of the working rotor. [Means for solving the problem]

[0007] An agricultural implement according to one embodiment of the present invention comprises a working rotor including a plurality of tilling claws arranged along the axial direction of a rotating shaft, a plurality of tilling members positioned in front of the working rotor, and a crushing member located between two adjacent tilling members in a plan view.

[0008] In the aforementioned agricultural implement, at least a portion of the gap between the two adjacent tilling members may be located behind the traveling means of the vehicle that pulls the agricultural implement.

[0009] In the aforementioned agricultural implement, the plurality of tilling members may be a plurality of discs, each supported so as to be rotatable. In this case, the crushing member may be located between two adjacent discs, and the distance between the two adjacent discs may be wider on the front side than on the rear side.

[0010] In the aforementioned agricultural implement, the plurality of tilling members may be a plurality of discs, each rotatably supported. In this case, the crushing member may be located between adjacent discs with their concave surfaces facing each other.

[0011] In the aforementioned agricultural implement, at least a portion of the arm supporting the crushing member may be located in front of the rear end of the rotational trajectory of the disc when viewed from the side.

[0012] In the aforementioned agricultural implement, the crushing member may be located below the lower end of the rotational trajectory of the work rotor when viewed from the side.

[0013] The aforementioned agricultural implement may further include a first frame that supports the crushing member and a second frame that supports the plurality of tilling members. In this case, the second frame may be located in front of the first frame.

[0014] The aforementioned agricultural implement may further include a first frame that supports the crushing member and a second frame that supports the plurality of discs. In this case, the position of the rotation axis of the discs may be located behind the central axis of the second frame.

[0015] In the aforementioned agricultural machine, the plurality of tilling members and the crushing member may be supported on the same frame. [Effects of the Invention]

[0016] According to an embodiment of the present invention, in an agricultural implement in which a plurality of tilling members are arranged in front of the working rotor, it is possible to achieve both a reduction in the load on the working rotor and the maintenance of tilling performance. [Brief explanation of the drawing]

[0017] [Figure 1] This figure shows a schematic configuration of an agricultural implement according to the first embodiment of the present invention. [Figure 2]It is a diagram showing a schematic configuration of an agricultural working machine according to a first embodiment of the present invention. [Figure 3] It is a diagram for explaining the positional relationship between a disk and a chisel arm in an agricultural working machine according to a first embodiment of the present invention. [Figure 4] It is a diagram for explaining the configuration of a second tilling working part in an agricultural working machine according to a second embodiment of the present invention. [Figure 5] It is a diagram showing a schematic configuration of an agricultural working machine according to a third embodiment of the present invention. [Figure 6] It is a diagram showing a schematic configuration of an agricultural working machine according to a third embodiment of the present invention.

Modes for Carrying Out the Invention

[0018] Hereinafter, embodiments of the agricultural working machine of the present invention will be described with reference to the drawings. However, the agricultural working machine of the present invention can be implemented in many different modes and is not to be construed as being limited to the description of the examples shown below. In the drawings referred to in the present embodiment, the same parts or parts having the same function are denoted by the same reference numerals, and repeated description thereof will be omitted.

[0019] In the specification and claims of the present application, "up" indicates a direction that is substantially perpendicular to and away from the field, and "down" indicates a direction that is substantially perpendicular to and approaching the field. "Front" indicates the direction in which the agricultural working machine travels, and "rear" indicates the direction opposite to the front. "Left" indicates the left when facing the direction in which the agricultural working machine travels, and "right" indicates the direction opposite to the left.

[0020] Also, relative to the center in the axial direction of the rotation axis of the working rotor, the side closer to the center may be referred to as "inside", and the side farther from the center may be referred to as "outside".

[0021] In the specification and claims of the present application, the "tillage member" refers to a member that is arranged in front of the working rotor and performs soil cutting and soil gathering as a pretreatment for tillage work by the working rotor. Further, the "crushing member" refers to a member that is arranged in front of the working rotor and crushes the soil at a position deeper than the layer of soil to be worked (tilled) by the working rotor as a pretreatment for tillage work by the working rotor.

[0022] <First Embodiment> (Configuration of Agricultural Working Machine) The configuration of the agricultural working machine 100 of the present embodiment will be described. In the present embodiment, as the agricultural working machine 100, a rotary working machine that is mounted on the rear part of a traveling machine body such as a tractor and tills a field is exemplified.

[0023] FIG. 1 and FIG. 2 are diagrams showing a schematic configuration of the agricultural working machine 100 according to the first embodiment of the present invention. Specifically, FIG. 1(A) is a front view of the agricultural working machine 100 as viewed from the front, and FIG. 1(B) is a top view of the agricultural working machine 100 as viewed from above. Further, FIG. 2(A) is a side view of the agricultural working machine 100 as viewed from the left side, and FIG. 2(B) is a cross-sectional view of the agricultural working machine 100 cut along the line A-A in FIG. 1(B) as viewed from the left side. Note that FIGS. 1 and 2 show a schematic configuration of the agricultural working machine 100 of the present embodiment, and for convenience of explanation, the illustration of some members is omitted or simplified.

[0024] The agricultural working machine 100 of the present embodiment is roughly divided into a mounting part 10, a first tillage working part 20, a second tillage working part 30, a crushing part 40, and a pressing working part 50. Each part will be described below.

[0025] The mounting section 10 includes a top link connecting section 110 and a pair of left and right lower link connecting sections 115. The top link connecting section 110 and the pair of left and right lower link connecting sections 115 function as a coupling mechanism for mounting the agricultural implement 100 to a traveling machine body (not shown), such as a tractor. The top link connecting section 110 is fixed to the first main frame 210 and the second main frame 215 of the first tilling work section 20, which will be described later, and a support section 110a is provided at its top. The pair of lower link connecting sections 115 are each fixed to the second main frame 215, and a support section 115a is provided at the front end of each. In the agricultural implement 100 of this embodiment, the top link connecting section 110 and the lower link connecting sections 115 are sometimes collectively referred to as the front hitch. The front hitch is connected to the vehicle body by a support portion 110a provided at the top of the top link connecting portion 110 and support portions 115a provided at each of the left and right lower link connecting portions 115.

[0026] The top link connector 110 and the lower link connector 115 are connected to the top link and lower links (i.e., a three-point link hitch mechanism) located at two locations on the left and right sides of a traveling machine (not shown), respectively. The agricultural implement 100 is mounted to the traveling machine by the mounting part 10, and the input shaft 117 is connected to the PTO (Power Take Off) shaft of the traveling machine by a universal joint or the like, enabling the agricultural implement to receive power from the traveling machine. The input shaft 117 is also called the PIC (Power Input Connection) shaft and functions as an interface for transmitting power from the traveling machine. Note that the connection between the agricultural implement 100 and the traveling machine may be made via an auto hitch frame.

[0027] The first tilling unit 20 includes a first main frame 210, a second main frame 215 (corresponding to the first frame), a working rotor 220, a shield cover 230, a leveling member 240, a side plate 245, a compression rod 250, and a chain drive unit 260. The first main frame 210 and the second main frame 215 are arranged parallel to each other and extend in a direction perpendicular to the direction of travel (left-right direction), and together with the shield cover 230 and the side plate 245, they form the skeletal structure of the first tilling unit 20. Inside the first main frame 210 is a power transmission shaft (not shown) that transmits power input from the input shaft 117 to the chain drive unit 260. The second main frame 215 is positioned in front of and below (lower than) the first main frame 210 when the agricultural implement 100 is viewed from the side.

[0028] The working rotor 220 includes a rotating shaft 222 and a plurality of tilling tines 224. The rotating shaft 222 is a member on which the plurality of tilling tines 224 are mounted, and is composed of a cylindrical, elongated member. The rotating shaft 222 rotates due to power transmitted via a power transmission shaft and a chain drive unit 260. The plurality of tilling tines 224 are arranged along the axial direction of the rotating shaft 222 and rotate as the rotating shaft 222 rotates, tilling the field.

[0029] The shield cover 230 is positioned above the working rotor 220 and plays a role in preventing soil clods from flying upwards during tilling operations by the working rotor 220.

[0030] The leveling member 240 is rotatably connected to the rear end of the shield cover 230 and positioned behind the working rotor 220. During tillage, the lower end of the leveling member 240 comes into contact with the field, leveling (leveling) the surface of the field tilled by the working rotor 220. In addition, by covering the rear of the working rotor 220, the leveling member 240 also plays a role in preventing soil clods from scattering backward during tillage.

[0031] The side plate 245 is a plate-shaped member positioned on the side of the work rotor 220, and is also called a side plate. The side plate 245 is positioned on both the left and right sides of the first main frame 210, the second main frame 215, the work rotor 220, and the shield cover 230, and the first main frame 210, the second main frame 215, the work rotor 220, and the shield cover 230 are each connected so as to span across the side plate 245. In other words, the side plate 245 constitutes a part of the frame (body) that forms the skeleton of the agricultural implement 100. In this embodiment, the side plate 245 is composed of two members: a member connected to the first main frame 210, the second main frame 215, and the shield cover 230, and a member attached to the rear end of the member connected to the first main frame 210, the second main frame 215, and the shield cover 230 (for example, also called a side shield). For the sake of explanation, both are collectively referred to as the side plate.

[0032] The compression rod 250 is positioned to span between the first main frame 210 and the leveling member 240, and its function is to press the leveling member 240 against the field with a constant pressure.

[0033] The chain drive unit 260 is located to the left of the first main frame 210 and the left side plate 245, and transmits power transmitted from the power transmission shaft (not shown) to the rotation shaft 222 of the work rotor 220. The chain drive unit 260 has a chain (not shown) and a pair of sprockets (not shown) inside the chain case, and connects the power transmission shaft and the rotation shaft 222.

[0034] The second tilling unit 30 includes a disc support unit 320, a disc frame 330 (corresponding to the second frame), an arm fixing member 335, a disc arm 340, an arm fixing member 345, and a disc 350. In this embodiment, the second tilling unit 30 includes the disc 350 as a tilling member.

[0035] The disk support portion 320 is a plate-shaped member fixed to the second main frame 215, and multiple disk support portions are arranged so as to protrude forward from the second main frame 215. The disk support portion 320 supports the disk frame 330, which is composed of a cylindrical or columnar member. The disk frame 330 is located in front of the second main frame 215 and is provided substantially parallel to the second main frame 215. In this embodiment, four assemblies consisting of disk support portions 320 and disk frames 330 are provided on the second main frame 215, but this is not the only example, and there may be four or more.

[0036] In this embodiment, the disk support portion 320 is shown as being fixed to the second main frame 215, but the invention is not limited to this, and the disk support portion 320 may be attached to the second main frame 215 in a manner that allows it to move in the left-right direction. Also, in this embodiment, the disk frame 330 is shown as being composed of a cylindrical or columnar member, but the invention is not limited to these, and may be composed of a rectangular tube or rectangular columnar member.

[0037] The arm fixing member 335 is a member for fixing the disc arm 340 to the disc frame 330, and is a plate-shaped member having a curved portion that curves downwards from the central part in the longitudinal direction (front-to-back direction). The upper end of the disc arm 340 is joined to the lower surface of the arm fixing member 335 by welding. The arm fixing member 345 is attached to the arm fixing member 335 by bolts so as to sandwich the disc frame 330 together with the arm fixing member 345.

[0038] The disc arm 340 is a member that rotatably supports the disc 350, and is a plate-shaped member having a curved portion that protrudes from the side opposite to the side to which the disc 350 is attached in the longitudinal (vertical) central portion. The upper end of the disc arm 340 is joined to the lower surface of the arm fixing member 335 by welding. The lower end of the disc arm 340 is provided with a mounting portion (through hole) (not shown) to which the rotation axis 352, which is the rotation center of the disc 350, is attached. Furthermore, as shown in Figure 2(A), the disc arm 340 is inclined backward so that the position of the rotation axis 352 of the disc 350 is located behind the center 331 of the disc frame 330. With this configuration, even if the disc 350 hits an obstacle in the soil such as a rock, the disc 350 can easily move backward, preventing damage to the disc arm 340 and the disc 350. In this embodiment, the disc arm 340 is a plate-shaped member having a curved portion (or a bent portion) that curves in a direction that follows the concave surface 351 of the disc 350, but the invention is not limited to this example.

[0039] In this embodiment, an example is shown in which the disk arm 340 is attached to the disk frame 330, but the invention is not limited to this configuration, and the disk arm 340 may also be fixed to or attached to the second main frame 215.

[0040] The arm fixing member 345 is a member for fixing the arm fixing member 335 to the disc frame 330, and is a plate-shaped member having a curved portion that curves upward from the central part in the longitudinal direction (front-to-back direction). The arm fixing member 345 is attached to the arm fixing member 335 by bolts so as to sandwich the disc frame 330 together with the arm fixing member 335.

[0041] In this embodiment, an example is shown in which two disk arms 340 and disks 350 are provided for one disk frame 330, but it is not limited to this, and one disk arm 340 and disk 350 may be supported for one disk frame 330, or three or more disk arms 340 and disks 350 may be supported.

[0042] The disc 350 is supported by the disc arm 340 so as to be rotatable around a pivot axis 352 attached to the lower end of the disc arm 340.

[0043] Each disc 350 has a concave curved surface 351 and is supported by the disc arm 340 such that the concave curved surface 351 faces diagonally with respect to the direction of travel. As shown in Figure 1(A), the two discs 350 located on the left end and the two discs 350 located on the right end each have their concave curved surfaces 351 facing inward, while the four discs 350 located on the inside each have their concave curved surfaces 351 facing outward. By supporting the discs 350 diagonally with respect to the direction of travel, each individual disc 350 can excavate a wider area of ​​the field compared to a configuration in which the discs 350 are arranged parallel to the direction of travel, thereby improving the tilling performance of the second tilling unit 30. Discs 350 with opposing concave curved surfaces 351 are arranged in an inverted "V" shape with the front widening in a plan view. Furthermore, it is preferable that the concave curved surfaces 351 of multiple discs 350 face diagonally upward. When the concave surface 351 of the disc 350 is oriented diagonally upward, each disc 350 can be made to displace soil. In this embodiment, the levelness of the field is also improved by controlling the direction of soil displacement by multiple discs 350. Furthermore, when the concave surface 351 of the disc 350 is oriented diagonally upward, an effect is created in which the disc 350 digs into the soil below, which can prevent the agricultural implement 100 from lifting up when tilling is performed at high speed.

[0044] The crushing section 40 includes a crushing member support section 410, a crushing member arm 420, and a crushing member 430. The crushing member support section 410 is a plate-shaped member attached to the second main frame 215 and is positioned to protrude forward. The crushing member support section 410 can be attached to any position on the second main frame 215 by a substantially U-shaped bolt (square U-bolt). That is, the crushing member support section 410 is configured to move left and right along the second main frame 215, and is configured to adjust the position of the crushing member 430 in accordance with the wheel position or crawler position of the vehicle to which it is mounted. Although not shown in the figures, a rectangular frame is provided in front of the crushing member support section 410, and the crushing member arm 420 is inserted into the rectangular frame so as to be movable in the vertical direction. That is, the crushing member support section 410 supports the crushing member arm 420 so as to be movable up and down via the rectangular frame.

[0045] The crushing member arm 420 is a long member that extends substantially perpendicular to the soil. As described above, the crushing member arm 420 is inserted into a rectangular frame provided in front of the crushing member support section 410 and is configured to be movable in the vertical direction. Specifically, positioning holes are provided in both the crushing member support section 410 and the crushing member arm 420, and the vertical position of the crushing member arm 420 is determined by inserting a pin member into the positioning hole. The crushing member 430 is attached to the lower end of the crushing member arm 420. In this embodiment, the crushing member arm 420 is provided extending substantially vertically, but it is also possible to configure it to be tilted forward and backward.

[0046] In this embodiment, an example is shown in which the crushing member support 410 is movable in the left-right direction, but it is not limited to this, and the crushing member support 410 may be fixed to the second main frame 215. Furthermore, in this embodiment, an example is shown in which the crushing member arm 420 is movable in the up-down direction, but it is not limited to this, and the crushing member arm 420 may be fixed to the crushing member support 410, or the crushing member support 410 and the crushing member arm 420 may be configured as an integral part. In this case, as will be described later, in order to enable the crushing member 430 to crush the soil layer below the soil layer tilled by the first tilling work unit 20, the crushing member arm 420 is fixed to the crushing member support 410, or the crushing member support 410 and the crushing member arm 420 are configured as an integral part, so that it is located below the lower end of the rotation trajectory of the work rotor 220 (tilling claws 224).

[0047] The crushing member 430 is a chisel attached to the lower end of the crushing member arm 420, positioned so that the surface facing the soil is angled upward toward the front. As described above, the position of the crushing member arm 420 is variable in the vertical direction, so the vertical position of the crushing member 430 is also variable. The crushing member 430 is capable of crushing the soil layer below the soil layer tilled by the first tilling work unit 20, and has the role of softening the soil. Furthermore, similar to the disc 350 described above, the crushing member 430 has the effect of biting into the soil below, thereby preventing the agricultural implement 100 from lifting up when tilling is performed at high speed. In this embodiment, an example is shown in which one crushing member 430 is supported by one crushing member support part 410, but it is not limited to this example, and a configuration in which two or more crushing members 430 are supported by one crushing member support part 410 is also possible. In this embodiment, a chisel is used as an example of the crushing member 430, but the invention is not limited to this example, and a subsoiler may also be used as the crushing member 430.

[0048] The compaction work unit 50 includes a cage bracket 510, a roller arm 520, an angle adjustment mechanism 530, a cage roller 540, a scraper bracket 550, and a scraper 560. The cage bracket 510 is fixed to the first main frame 210 and side plate 245 described above and is a bracket for supporting the cage roller 540 which is positioned at the rear. A pair of these brackets are provided, one on the left and one on the right. The roller arm 520 is a pair of left and right members that support the cage roller 540 from both sides. One end is rotatably attached to the cage bracket 510, and the other end rotatably supports the cage roller 540. The angle adjustment mechanism 530 is spanned between the cage bracket 510 and the roller arm 520 and is configured to adjust the angle of the roller arm 520 relative to the cage bracket 510. The angle of the roller arm 520 relative to the cage bracket 510 can be adjusted by rotating a screw (not shown).

[0049] The basket roller 540 has a structure in which multiple bars 540b are mounted on multiple ring-shaped support members 540a, and is rotatably supported on the roller arm 520. In the agricultural implement 100 of this embodiment, as the machine moves forward, the basket roller 540 rotates as it moves past the first tilling work unit 20. At that time, the multiple bars 540b are configured to break up and compact the soil clumps in the field tilled by the first tilling work unit 20. The scraper bracket 550 is a member that extends in the left-right direction and is fixed to the roller arm 520. A scraper 560 is attached to the scraper bracket 550. The scraper 560 is an elastic material such as rubber and is attached to the scraper bracket 550 so as to be in contact with the basket roller 540, and plays the role of removing soil adhering to the basket roller 540 during compaction work.

[0050] The agricultural implement 100 of this embodiment, as described above, will now be explained in more detail, focusing on the configuration of the second tilling unit 30 and the crushing unit 40.

[0051] As shown in Figure 1(A), in a plan view, the crushing member 430 is positioned between two adjacent discs 350a and 350b, with their concave surfaces 351 facing each other. Disc 350a is a disc with its concave surface 351 facing inward, and disc 350b is a disc with its concave surface 351 facing outward. A gap is provided between discs 350a and 350b, which is wider than the distance between other discs. This gap corresponds to the position of the tracks left by the running means (e.g., wheels or crawler) of the traveling machine. In other words, discs 350a and 350b are positioned with a predetermined gap between them so that the tracks of the traveling machine are located between them. To put it another way, when the agricultural implement 100 is connected to the traveling machine, the aforementioned gap is located behind the running means of the traveling machine. Furthermore, the gap between disk 350a and disk 350b only needs to be located at least partially behind the traveling mechanism of the traveling machine.

[0052] Conventional agricultural machinery has problems such as soil compaction due to trampling in the tracks, leading to uneven soil and poor drainage. However, the agricultural machinery 100 of this embodiment can crush and soften the soil below the soil layer tilled by the first tilling unit 20 using the crushing member 430, thereby improving soil uniformity and suppressing poor drainage. In particular, in this embodiment, as shown in Figures 2(A) and 2(B), in a side view, the crushing member 430 is located below the lower end of the rotational trajectory of the working rotor 220 (tilling claws 224). That is, the crushing member 430 crushes soil at a deeper position than the soil layer tilled by the working rotor 220, thus crushing the compacted soil in the tracks from a deeper position, improving soil uniformity and drainage.

[0053] Furthermore, the predetermined distance between discs 350a and 350b described above is such that the distance on the front side is wider than the distance on the rear side. That is, the two adjacent discs 350a and 350b, with their concave curved surfaces 351 facing each other, are arranged to expand forward, i.e., in an inverted "V" shape in a plan view. With this arrangement, the soil thrown backward by discs 350a and 350b is returned to the track, filling in the track. In other words, the track formed in the soil by the passage of the machine can be erased by discs 350a and 350b before being tilled by the working rotor 220. In particular, in this embodiment, the track of the machine is crushed by the crushing member 430 to improve the uniformity and drainage of the soil, and then the track is filled in by discs 350a and 350b, making it possible to improve both the drainage and flatness of the soil.

[0054] In order to improve soil uniformity and drainage by crushing the tracks left by the traveling machine with the crushing member 430, and then to fill the tracks with discs 350a and 350b, it is preferable to pay attention to the positional relationship between discs 350 and the crushing member 430. Specifically, it is preferable to have a positional relationship such that after the tracks are crushed by the crushing member 430, the soil is returned to the tracks by discs 350a and 350b.

[0055] In this embodiment, as shown in Figures 2(A) and 2(B), the crushing member arm 420 is positioned slightly forward of the rotation axis 352 of the disc 350. That is, the crushing member 430 is positioned forward of the rotation axis 352 of the disc 350. When the disc 350 and the crushing member 430 are in this positional relationship, the disc 350 throws soil onto the track crushed by the crushing member 430, thereby improving both the drainage and flatness of the soil as described above. However, if the crushing member arm 420 is positioned too far forward, there is a risk that the crushing member arm 420 will interfere with the running machine body. If the length of the top link connecting portion 110 and the lower link connecting portion 115 is increased in the front-to-back direction to prevent interference between the crushing member arm 420 and the running machine body, the front-to-back length of the agricultural implement 100 will increase. Therefore, in a side view, it is preferable that the crushing member arm 420 is positioned such that at least a portion of the crushing member 430 is located behind the front end of the rotation trajectory of the disc 350. In other words, in a side view, it is preferable that at least a portion of the crushing member 430 is located behind the front end of the rotation trajectory of the disc 350, and that at least a portion of the crushing member 430 and the disc 350 overlap in the front-rear direction, that is, that the entire crushing member 430 does not extend beyond the entire rotation trajectory of the disc 350.

[0056] Furthermore, as shown in Figures 2(A) and 2(B), the crushing member 430 of this embodiment is positioned in a vertically overlapping location with the support portion 115a provided on the lower link connecting portion 115 in a side view. Specifically, in a side view, the rear end of the crushing member 430 is located behind the support portion 115a, and the entire crushing member 432 is configured not to extend in front of the support portion 115a. In other words, it is preferable that the vertical line (not shown) passing through the support portion 115a is located in front of the front end of the crushing member 430, or within the width of the crushing member 430 in the front-rear direction.

[0057] (modified version) This modified example shows a different positional relationship between the disc 350 and the crushing arm 420 compared to Figure 2(A). Therefore, in Figure 3, the same reference numerals are used for elements that are the same as those in the agricultural implement 100 shown in Figure 2(A), and detailed explanations are omitted.

[0058] Figure 3 is a diagram illustrating the positional relationship between the disc 350 and the crushing member arm 420 in an agricultural implement 100a according to a modified example of the first embodiment of the present invention. Specifically, Figure 3 corresponds to a side view of the agricultural implement 100a as seen from the left side, similar to Figure 2(A).

[0059] It is preferable that the crushing member arm 420 be positioned such that at least a portion of the crushing member 430 is located behind the front end of the rotational trajectory of the disc 350. However, if the crushing member arm 420 is moved too far back, the crushing member 430 will pass over the track after the track has been filled with soil thrown by the disc 350. This can impair the effect of pushing soil into the track, or the soil thrown by the disc 350 may hit the crushing member arm 420, impairing its effect of filling the track. Furthermore, if the crushing member arm 420 is moved too far back, contact with stones or other objects in the soil may cause the crushing member arm 420 and the crushing member 430 to move backward, potentially causing the crushing member arm 420 to interfere with the working rotor 220. In order to prevent interference between the crushing member arm 420 and the working rotor 220, increasing the front-to-back distance between the second main frame 215 to which the crushing section 40 is attached and the working rotor 220 would result in an increase in the front-to-back length of the agricultural implement 100. Therefore, in a side view, it is preferable that the crushing member 430 is positioned so that its entirety is forward of the rear end of the rotational trajectory of the disc 350. In other words, in a side view, it is preferable that at least a portion of the crushing member arm 420 is positioned forward of the rear end of the rotational trajectory of the disc 350.

[0060] Therefore, in this modified example, as shown in Figure 3, in a side view, the front end of the crushing member 430 is located behind the rotation axis 352 of the disc 350, and furthermore, a part of the crushing member arm 420 overlaps the disc 350. Thus, in a side view, the entire crushing member 430 is located in a range that is behind the rotation axis 352 of the disc 350 and in front of the rear end of the rotation trajectory of the disc 350. With this configuration, the track left after crushing by the crushing member 430 can be filled with soil thrown by the disc 350, thereby improving both the drainage and flatness of the soil.

[0061] The positional relationship of the crushing member arm 420 (crushing member 430) with respect to the disk 350 is not limited to the configuration shown in Figure 2 or Figure 3. In a side view, the crushing member arm 420 (crushing member 430) can be positioned anywhere as long as at least a portion of the crushing member 430 is behind the front end of the rotation trajectory of the disk 350, and the front end of the crushing member 430 is behind the rotation axis 352 of the disk 350, and a portion of the crushing member arm 420 overlaps the disk 350.

[0062] <Second Embodiment> In this embodiment, we will describe an example in which the configuration of the second tilling work unit differs from that of the first embodiment. Specifically, in the first embodiment, the disc and the crushing member are supported by different frames, whereas in this embodiment, they are supported by the same frame. For the sake of convenience, elements that are the same as in the first embodiment are given the same reference numerals and their descriptions are omitted.

[0063] Figure 4 is a diagram illustrating the configuration of the second tilling unit 30A and the crushing unit 40 in the agricultural implement 100A according to the second embodiment of the present invention. Specifically, Figure 4(A) is a side view showing the support structure of the disc 350 in the second tilling unit 30A, and Figure 4(B) is a side view showing the support structure of the crushing member 430 in the crushing unit 40. For the sake of simplicity, the crushing member support unit 410, the crushing member arm 420, and the crushing member 430 are omitted from Figure 4(A), and the disc support unit 320A, the disc arm 340A, and the disc 350 are omitted from Figure 4(B). In Figures 4(A) and 4(B), a part of the support member 540a and the scraper bracket 550 are shown in a cross-sectional view from the left side. The disc 350 is also omitted from the illustration.

[0064] As shown in Figure 4(A), the disk 350 in this embodiment is supported by a disk support 320A and a disk arm 340A. The support structure of the disk 350 is substantially the same as the support structure of the crushing member 430 described using Figure 2(B). Specifically, the disk support 320A is attached to the second main frame 215 in a configuration that allows it to move in the left-right direction, and the disk arm 340A is attached to the front end of the disk support 320A in a configuration that allows it to move in the up-down direction. The disk 350 is rotatably supported at the lower end of the disk arm 340A. Although not shown, the specific configuration of the disk 350, such as its shape and mounting method, is the same as in the first embodiment.

[0065] In this embodiment, the disc support portion 320A has a shape that is inclined such that its front end is positioned slightly diagonally upward compared to its rear end. The disc arm 340A is also supported by the disc support portion 320A at an inclination such that its lower end is positioned in front of its upper end. This configuration ensures sufficient distance between the disc 350 and the working rotor 220.

[0066] Furthermore, as shown in Figure 4(B), the crushing member 430 in this embodiment is supported by the crushing member support portion 410 and the crushing member arm 420. The support structure of the crushing member 430 is the same as the support structure described using Figure 2(B), so a detailed explanation is omitted.

[0067] In this embodiment, the disk 350 and the crushing member 430 are supported by the same frame (second main frame 215). Specifically, the disk 350 is supported by the second main frame 215 by the disk support portion 320A and the disk arm 340A, and the crushing member 430 is supported by the second main frame 215 by the crushing member support portion 410 and the crushing member arm 420. When adopting the configuration of this embodiment, the positions of the disk 350 and the crushing member 430 in the front-rear direction are determined by the front-rear lengths of the disk support portion 320A and the crushing member support portion 410, respectively.

[0068] <Third Embodiment> In this embodiment, we will describe an example in which the configuration of the second tilling work unit differs from that of the first embodiment. Specifically, while the first embodiment showed an example in which a disc was used as the tilling member, this embodiment differs in that a chisel for soil mounding is used as the tilling member. For the sake of convenience in explanation, elements that are the same as in the first embodiment are given the same reference numerals and their descriptions are omitted.

[0069] Figures 5 and 6 show the schematic configuration of the agricultural implement 100B according to the third embodiment of the present invention. Specifically, Figure 5(A) is a front view of the agricultural implement 100B as seen from the front, and Figure 5(B) is a top view of the agricultural implement 100B as seen from above. Figure 6 is a side view of the agricultural implement 100B as seen from the left side. Note that Figures 5 and 6 show the schematic configuration of the agricultural implement 100B of this embodiment, and for the sake of explanation, some parts have been omitted or simplified in the illustration.

[0070] In this embodiment, the second tilling unit 30B includes a chisel support 320B, a chisel frame 330B (corresponding to the second frame), an arm fixing member 335B, a chisel arm support 337B, a chisel arm 340B, an arm fixing member 345B, and a chisel 350B. In this embodiment, an example is shown in which the second tilling unit 30B includes a chisel 350B for soil mounding as a tilling member.

[0071] The chisel support portion 320B is a plate-shaped member fixed to the second main frame 215 and positioned to protrude forward. The chisel support portion 320B supports the chisel frame 330B, which is composed of a cylindrical or columnar member. The chisel frame 330B is located in front of the second main frame 215 and is provided substantially parallel to the second main frame 215. In this embodiment, four assemblies consisting of the chisel support portion 320B and the chisel frame 330B are provided on the second main frame 215, but this is not the only example, and there may be four or more.

[0072] The arm fixing member 335B is a member for fixing the chisel arm 340B to the chisel frame 330B, and is a plate-shaped member having a curved portion that curves upwards in the central part in the longitudinal direction (front-to-back direction). The upper front end of the chisel arm support portion 337B is welded to the rear upper surface of the arm fixing member 335B. The arm fixing member 345B is attached to the arm fixing member 335B by bolts so as to sandwich the chisel frame 330B together with the arm fixing member 345B. The chisel arm 340B is inserted into a rectangular frame provided behind the chisel arm support portion 337B so as to be movable in the vertical direction.

[0073] The chisel arm 340B is a long member that extends approximately perpendicular to the soil. As described above, the chisel arm 340B is inserted into a rectangular frame provided behind the chisel arm support 337B and is configured to be movable in the vertical direction. Specifically, both the chisel arm support 337B and the chisel arm 340B are provided with positioning holes, and the vertical position of the chisel arm 340B is determined by inserting a pin member into the positioning holes. A chisel 350B is attached to the front of the lower end of the chisel arm 340B. In this embodiment, an example is shown in which two chisels 350B are provided for one chisel frame 330B, but it is not limited to this, and only one chisel 350B may be supported, or three or more chisels 350B may be supported.

[0074] Unlike the crushing member 430, the chisel 350B has a concave curved surface 351B, and is supported by the chisel arm 340B such that the concave curved surface 351B faces diagonally with respect to the direction of travel. By supporting multiple chisels 350B diagonally with respect to the direction of travel, each individual chisel 350B can excavate the field. Furthermore, the concave curved surfaces 351B of the multiple chisels 350B are positioned to face diagonally upward. When the concave curved surfaces 351B of the multiple chisels 350B face diagonally upward, each of the multiple chisels 350B can push soil in the direction that the concave curved surface 351B is facing.

[0075] The arm fixing member 345B is a member for fixing the arm fixing member 335B to the chisel frame 330B, and is a plate-shaped member having a curved portion that curves downwards from the central part in the longitudinal direction (front-to-back direction). The arm fixing member 345B is attached to the arm fixing member 335B by bolts so as to sandwich the chisel frame 330B together with the arm fixing member 335B.

[0076] In this embodiment of the agricultural implement 100B, similar to the first embodiment, the crushing member 430 is positioned so as to pass through the tracks left by the traveling machine. Specifically, as shown in Figure 5(A), in a plan view, the crushing member 430 is positioned between two adjacent chisels 350Ba and 350Bb, with their concave curved surfaces 351B facing each other. Chisel 350Ba is a chisel with its concave curved surface 351B facing inward, and chisel 350Bb is a chisel with its concave curved surface 351B facing outward. A gap is provided between chisels 350Ba and 350Bb, having a predetermined interval corresponding to the tracks left by the traveling machine. In other words, the crushing member 430 has the function of crushing the tracks compacted by the traveling machine. Furthermore, as described above, chisels 350Ba and 350Bb are positioned with their concave curved surfaces 351B facing the tracks toward each other. Therefore, the agricultural implement 100B of this embodiment can improve the levelness of the field by using multiple chisels 350B to pile soil into the tracks left by the machine and fill in the tracks.

[0077] As shown in Figure 6, in a side view, the crushing member 430 is located below the lower end of the rotational trajectory of the working rotor 220 (cultivating claws 224). With this configuration, the crushing member 430 can crush soil at a deeper position than the soil layer that the working rotor 220 works (cultivates), thus crushing the compacted soil in the track from a deeper position, improving soil uniformity and drainage. Also, in a side view, the crushing member 430 is located in front of the chisel 350. With this configuration, the chisel 350B mounds soil over the track crushed by the crushing member 430, thereby improving both soil drainage and flatness.

[0078] In this embodiment, a configuration is shown in which the chisel 350B and the crushing member 430 are supported by different frames. However, the invention is not limited to this example, and it is also possible to support the chisel 350B and the crushing member 430 by the same frame, as in the second embodiment.

[0079] Although the agricultural machinery of the present invention has been described above with reference to the drawings, the present invention is not limited to the embodiments described above (including modified versions), and can be modified as appropriate without departing from the spirit of the invention. For example, any additions, deletions, or design changes made by a person skilled in the art based on each embodiment are also included in the scope of the present invention, as long as they retain the gist of the invention. Furthermore, the configurations of each embodiment described above can be combined as appropriate as long as they do not contradict each other, and technical matters common to each embodiment are included in each configuration even without explicit description.

[0080] Any effects or benefits other than those brought about by the embodiments described above, if they are clear from the description herein or easily predictable to a person skilled in the art, are naturally considered to be brought about by the present invention. [Explanation of Symbols]

[0081] 10...Mounting section, 20...First tilling section, 30, 30A, 30B...Second tilling section, 40...Crushing section, 50...Compaction section, 100, 100a, 100A, 100B...Agricultural implement, 110...Top link connection section, 110a...Support section, 115...Lower link connection section, 115a...Support section, 117...Input shaft, 210...First main frame, 215...Second main frame, 220...Working rotor, 222...Rotating shaft, 224...Tilling claws, 230...Shield cover, 240...Land leveling member, 245...Side plate, 250...Compression rod, 260...Chain drive section, 320, 320A...Disc support section, 320B...Chisel support section, 330...Disc frame 330B…Chisel frame, 331…Central axis, 335, 335B…Arm fixing member, 337B…Chisel arm support, 340, 340A…Disc arm, 340B…Chisel arm, 345, 345B…Arm fixing member, 350, 350a, 350b…Disc, 350B, 350Ba, 350Bb…Chisel, 351, 351B…Concave curved surface, 352…Rotating axis, 410…Crushing member support, 420…Crushing member arm, 430…Crushing member, 510…Basket bracket, 520…Roller arm, 530…Angle adjustment mechanism, 540…Basket roller, 540a…Support member, 540b…Bar, 550…Scraper bracket, 560…Scraper

Claims

1. A working rotor including multiple tilling tines arranged along the axial direction of the rotating shaft, Multiple tilling members are positioned in front of the aforementioned working rotor, In a plan view, the crushing member is located between two adjacent tilling members among the plurality of tilling members, A farming machine equipped with these features.

2. The agricultural implement according to claim 1, wherein at least a portion of the gap between the two adjacent tilling members is located behind the traveling means of the traveling body that tows the agricultural implement.

3. The aforementioned plurality of tilling members are each a plurality of disks that are rotatably supported, The crushing member is located between two adjacent disks. The agricultural implement according to claim 1, wherein the distance between the two adjacent discs is wider on the front side than on the rear side.

4. The aforementioned plurality of tilling members are each a plurality of disks that are rotatably supported, The agricultural implement according to claim 1, wherein the crushing member is located between adjacent discs with their concave curved surfaces facing each other.

5. The agricultural implement according to claim 3 or 4, wherein, in a side view, at least a portion of the arm supporting the crushing member is located forward of the rear end of the rotational trajectory of the disc.

6. In a side view, the crushing member is located below the lower end of the rotational trajectory of the work rotor, as described in claim 3 or 4.

7. The agricultural implement according to claims 1 to 4, further comprising a first frame for supporting the crushing member and a second frame for supporting the plurality of tilling members.

8. The agricultural implement according to claim 7, wherein the second frame is located in front of the first frame.

9. The system further comprises a first frame that supports the crushing member and a second frame that supports the plurality of disks, The agricultural implement according to claim 3 or 4, wherein the position of the rotation axis of the disk is located behind the central axis of the second frame.

10. The agricultural implement according to claims 1 to 4, wherein the plurality of tilling members and the crushing member are supported on the same frame.

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