Cover for reaping machine and reaping machine with cover

Abstract

To reduce a load applied to a reaping machine while suppressing scattering of reaping objects to the back.SOLUTION: A cover 30 for a reaping machine towed by a vehicle, the cover being provided on a rear side in a traveling direction of the reaping machine, for suppressing scattering of reaping objects reaped by the reaping machine to the back of the reaping machine. The cover comprises: arm parts 40A and 40B provided on the rear side in the traveling direction of the reaping machine to extend to the back of the reaping machine; a frame part 44 provided at a position separated a predetermined distance from a rear end of the reaping machine to extend in a width direction of the reaping machine via the arm parts; and a plate-like or sheet-like cover member 32 extending in the width direction of the reaping machine, suspended and held near an upper end by the frame part. The cover member elastically deforms upon receiving a load from the front caused by the reaping objects, and / or swings relative to the frame part.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cover for a reaper and a reaper with a cover. [Background technology]

[0002] In recent years, Japan has been facing problems such as a halving of the number of people working in agriculture, a significant drop in rice demand, and dependence on overseas sources of livestock feed, making it an urgent task to establish a rice paddy rotation system that can expand the scale of operations with less labor and at lower cost.For this reason, recently, attention has been focused on "seed corn," a new rotation crop that can be cultivated with less labor and is highly profitable.

[0003] When harvesting corn ears, which are located about 1 meter above the ground, they are usually harvested with a general-purpose combine harvester equipped with a corn header, but high stubble remains in the field as crop residue (stems and leaves). Therefore, after harvesting the ears, the stubble residue must be disposed of using a flail mower or other equipment.

[0004] Some commercially available flail mowers are designed to reduce the load caused by the cut stem and leaf residue by opening the rear cover during high-load work such as processing tall stem and leaf residue (see, for example, Non-Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-99296 [Patent Document 2] Patent Publication No. 2021-29240 [Non-patent literature]

[0006] [Non-Patent Document 1] internet<URL:http: / / www.sasaki-corp.co.jp / cn4 / corner804734 / pg4915985.html> [Non-patent document 2] internet<URL:https: / / www.niplo.co.jp / products / products_dt.php?id=225> Summary of the Invention [Problem to be solved by the invention]

[0007] However, when a flail mower is used in a field with the rear cover open, residues fly out to the rear, which can scatter residues outside the field or into adjacent fields, and can also be dangerous if there is someone behind the flail mower.

[0008] Patent Document 1 describes a brush cutter that is provided with a cover plate to prevent stones and gravel from flying out, but does not take into consideration the increased load on the brush cutter that would result from providing the cover plate. Patent Document 2 also describes a vegetation cutting device equipped with a vegetation collection container that is provided with a cover to prevent cut vegetation from being blown forward, but this is not intended to prevent residue from flying backward, and does not take into consideration the load on the device.

[0009] Therefore, an object of the present invention is to provide a reaper cover and a reaper with a cover that can reduce the load on the reaper while preventing the objects to be reaped from flying backward. [Means for solving the problem]

[0010] The mower cover of the present invention is a mower cover that is provided on the rear side of a mower towed by a vehicle in the direction of travel and prevents the mowed object from flying behind the mower, and is equipped with an arm portion that is provided on the rear side of the mower in the direction of travel and extends behind the mower, a frame portion that extends in the width direction of the mower via the arm portion and is provided at a position a predetermined distance from the rear end of the mower, and a plate-shaped or sheet-shaped cover member that extends in the width direction of the mower and is suspended and held near the upper end by the frame portion, and the cover member is a mower cover that elastically deforms when subjected to a load from the front by the mowed object and / or swings relative to the frame portion.

[0011] The reaper with a cover of the present invention comprises a reaper towed by a vehicle and the above-described reaper cover provided on the reaper. [Effects of the Invention]

[0012] The reaper cover and the reaper with cover of the present invention have the effect of reducing the load on the reaper while suppressing the scattering of the reaped material backward. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram schematically illustrating a reaper according to one embodiment. [Figure 2] FIG. 2 is a perspective view showing the flail mower as viewed from the rear side (-Y side). [Figure 3] FIG. 3 is a perspective view showing a state in which a reaper cover is attached to a flail mower. [Figure 4] FIG. 4 is a perspective view showing a state in which the upper mesh member and the side mesh members are removed from the state shown in FIG. [Figure 5] FIG. 5 is a perspective view showing the rubber mat and its periphery in FIG. 4 as viewed from the +Y side. [Figure 6] 6(a) and 6(b) are diagrams showing an example of dimensions of each part of the reaper cover. [Figure 7]FIG. 7 shows a modification of the extension arm and Z extension member. [Figure 8] FIG. 8 is a diagram showing an example in which a plate-like member is used instead of the rubber mat of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] The working device 100 will be described in detail below with reference to FIGS. 1 to 6(b).

[0015] FIG. 1 is a diagram that schematically shows a working device 100 according to one embodiment. As shown in FIG. 1, the working device 100 includes a tractor 90 as a vehicle and a flail mower 10 as a harvester. In this embodiment, the description will be given assuming that the front-to-rear direction of the tractor 90 in FIG. 1 is the Y-axis direction, the left-to-right direction of the tractor 90 that is perpendicular to the Y-axis direction is the X-axis direction, and the up-down direction (vertical direction) that is perpendicular to the X and Y-axis directions is the Z-axis direction. Note that since the direction indicated by the arrow in the coordinate system in FIG. 1 is the + direction, the direction ahead in the direction of travel of the tractor 90 is the +Y direction, and the direction behind the direction of travel of the tractor 90 is the -Y direction.

[0016] A link mechanism 92 is provided on the rear side (-Y side) of the tractor 90, and the flail mower 10 is connected to the link mechanism 92. The tractor 90 also has a PTO (Power Take Out) joint 94, which is connected to the transmission case 12 of the flail mower 10.

[0017] The flail mower 10 is a device that is pulled by a tractor 90 traveling in a field and cuts stem and leaf residues (for example, high stubble of kernel corn) that are the object to be cut that exist in the field.

[0018] FIG. 2 is a perspective view of the flail mower 10 as seen from the rear (-Y side). The flail mower 10 has a rotating shaft 14 that rotates about the X-axis due to the rotational force of the PTO joint 94 of the tractor 90. The rotating shaft 14 is provided with multiple cutting blades 16, and as the rotating shaft 14 rotates about the X-axis, the cutting blades 16 cut stem and leaf residue in the field. The flail mower 10 also has gauge rollers 18. The gauge rollers 18 come into contact with the ground in the field and rotate as the flail mower 10 moves. The gauge rollers 18 suppress vibration and sinking of the flail mower 10, enabling stable mowing work. The rotating shaft 14 and gauge rollers 18 are rotatably held by a frame (housing) 20 of the flail mower 10. The portion of the frame 20 located above the gauge rollers 18 forms a rear frame 24. In addition, a rear cover 22 is provided on the upper side of the frame 20.

[0019] The rear cover 22 can be opened and closed, and when the rear cover 22 is closed (when the rotating shaft 14 in FIG. 2 cannot be seen from the outside), scattering of stem and leaf residue cut by the cutting blade 16 rearward (toward the -Y side) is suppressed. On the other hand, when the rear cover 22 is open, the cut stem and leaf residue no longer remains inside the flail mower 10, reducing the load on the flail mower 10. However, when the rear cover 22 is open, the cut stem and leaf residue scatters rearward, which may result in scattering outside the field. Furthermore, if there is a person behind the flail mower 10, there is a risk that the scattered stem and leaf residue may hit the person.

[0020] Therefore, in this embodiment, a reaper cover 30 as shown in FIG. 1 is attached to the flail mower 10 with the rear cover 22 open.

[0021] Fig. 3 is a perspective view showing the state in which the reaper cover 30 is attached to the flail mower 10. As shown in Fig. 3, the reaper cover 30 has a rubber mat 32 as a cover member, an upper mesh member 34 as a scattering suppression member that suppresses scattering of stem and leaf residue from above, and side mesh members 36A, 36B as scattering suppression members that suppress scattering of stem and leaf residue from the sides.

[0022] Figure 4 is an oblique view showing the state in which the upper mesh member 34 and the side mesh members 36A and 36B have been removed from the state shown in Figure 3, and Figure 5 is an oblique view showing the area around the rubber mat 32 in Figure 4 as viewed from the +Y side.

[0023] 4 and 5, the rubber mat 32 is held by the rear frame 24 of the flail mower 10 via a holding mechanism 50. Here, the holding mechanism 50 has extension arms 40A, 40B as arm portions extending in the Y-axis direction with one end (+Y side end) fixed to the rear frame 24, and Z extension members 42A, 42B extending in the Z-axis direction attached to the other end (-Y side end) of the extension arms 40A, 40B. The extension arms 40A, 40B and the Z extension members 42A, 42B are hollow rectangular columnar members made of, for example, iron.

[0024] A fixed frame 44 is provided near the upper ends of the Z extension members 42A, 42B as a frame portion extending in the X-axis direction (the width direction of the flail mower 10). The fixed frame 44 is made of iron, for example, and has a substantially U-shaped YZ cross section. The rubber mat 32 is suspended and held near the upper end of the fixed frame 44.

[0025] The rubber mat 32 is a rectangular rubber plate-like member (sheet-like member) when viewed from the -Y direction. As shown in FIG. 6(a), the dimensions of the rubber mat 32 are, for example, 43 cm high x 178 cm wide and 11 mm thick. The width of the rubber mat 32 is approximately the same as the working width of the flail mower 10, and the height of the rubber mat 32 is set so that the bottom end of the rubber mat 32 is approximately 0 to 2 cm above the ground. The height of the bottom end of the rubber mat 32 from the ground is adjusted depending on the type of crop being harvested.

[0026] In this embodiment, various dimensions of the holding mechanism 50 (e.g., the length of the extension arms 40A and 40B) are set so that the rubber mat 32 is positioned at a predetermined distance (e.g., 70 cm to 75 cm) from the rotation axis of the rotating shaft body 14, as shown in FIG. 6(a). If the length from the rotation axis of the rotating shaft body 14 to the rear end of the flail mower 10 is 42 cm, the distance between the rubber mat 32 and the rear end of the flail mower 10 is 28 cm to 33 cm. In this embodiment, as shown in FIG. 6(a), the distance from the center position of the extension arm 40A in the X-axis direction to the end on the +X side of the rear frame 24 is set to 38 cm or more. Similarly, the distance from the center position of the extension arm 40B in the X-axis direction to the end on the -X side of the rear frame 24 is also set to 38 cm or more. The inventors have found, through trial and error, the best position to locate the extension arms 40A, 40B is the one that minimizes the amount of cut stem and leaf residue remaining on the extension arms 40A, 40B.

[0027] Returning to Figure 3, the upper mesh member 34 is a mesh member made of, for example, plastic. The upper mesh member 34 is intended to prevent stem and leaf residue cut by the flail mower 10 from scattering upward toward the rear of the flail mower 10. The upper mesh member 34 is made of a mesh to allow air to flow upward while preventing stem and leaf residue from scattering. The upper mesh member 34 is made of plastic because it can ensure a certain degree of strength and is relatively lightweight. The upper mesh member 34 is sized to fill the gap between the rubber mat 32 and the rear cover 22.

[0028] The side mesh members 36A, 36B are mesh members made of, for example, metal. The side mesh members 36A, 36B have dimensions of, for example, about 40 cm in height and 56 cm in width. The side mesh members 36A, 36B are intended to prevent stem and leaf residue cut by the flail mower 10 from scattering to the sides behind the flail mower 10. The side mesh members 36A, 36B are made of a mesh to allow air to flow to the sides while preventing stem and leaf residue from scattering. The side mesh members 36A, 36B are made of metal to ensure greater strength than the upper mesh member.

[0029] A rectangular residue retention prevention plate 38A is provided on the -X side of the side mesh member 36A as an adhesion prevention member. A rectangular residue retention prevention plate 38B is provided on the +X side of the side mesh member 36B. The residue retention prevention plates 38A and 38B are members for preventing stem and leaf residue from getting caught on the side mesh members 36A and 36B. As shown in FIG. 6(b), the dimensions of the residue retention prevention plates 38A and 38B are, for example, 20 cm high x 30 cm wide and 2 mm thick. Therefore, the residue retention prevention plates 38A and 38B do not cover the entire side mesh members 36A and 36B. The reason the residue retention prevention plates 38A and 38B do not cover the entire side mesh members 36A and 36B is to prevent obstruction of lateral air flow through the side mesh members 36A and 36B. The residue retention prevention plates 38A and 38B may be made of various materials such as plastics and metals.

[0030] In this embodiment, as shown in FIG. 1 , the rear cover 22 of the flail mower 10 is open, and the above-described reaper cover 30 is attached to the rear of the flail mower 10. Then, the flail mower 10 is towed by a tractor 90, and the flail mower 10 is used to perform the mowing process of stem and leaf residue. Therefore, stem and leaf residue cut by the cutting blade 16 of the flail mower 10 is contained within the space surrounded by the field surface and the reaper cover 30, preventing it from scattering outside the space. This prevents stem and leaf residue from scattering outside the field, ensuring safety. Furthermore, because the rubber mat 32 is located a predetermined distance (e.g., 70 to 75 cm) from the rotation axis of the rotating shaft body 14, the load from the stem and leaf residue can be reduced compared to when the rubber mat 32 is located near the rotation axis. Furthermore, the rubber mat 32 elastically deforms when leaf residue accumulates inside the reaper cover 30 and is subjected to a load from the leaf residue, and this deformation allows the leaf residue to be discharged to the outside from the underside of the reaper cover 30. This reduces the load on the flail mower 10. Furthermore, even if seed corn is adopted as a new rotation crop, it is possible to safely and efficiently process tall leaf residue (high stubble).

[0031] In addition, in this embodiment, the harvester cover 30 has an upper mesh member 34 and side mesh members 36A, 36B, so that it is possible to ensure the flow of air outward in an upward and lateral direction while suppressing the scattering of stem and leaf residue from above and the side.

[0032] In this embodiment, residue retention prevention plates 38A, 38B are provided to cover portions of the side mesh members 36A, 36B, thereby ensuring the flow of air to the outside via the side mesh members 36A, 36B, preventing the adhesion (retention) of stem and leaf residue to the side mesh members 36A, 36B.

[0033] In this embodiment, the reaper cover 30 can be easily attached to and detached from the flail mower 10. This allows, for example, the reaper cover 30 to be removed from the flail mower 10 when the flail mower 10 is used with the rear cover 22 closed, and the reaper cover 30 to be attached to the flail mower 10 when the flail mower 10 is used with the rear cover 22 open.

[0034] In the above embodiment, the upper mesh member 34 and the side mesh members 36A, 36B are provided to prevent scattering of stem and leaf residue from above and sides of the reaper cover 30, but the present invention is not limited to this. For example, plate-shaped members may be provided to prevent scattering of stem and leaf residue from above and sides of the reaper cover 30.

[0035] Furthermore, in the above embodiment, it is not necessary to provide members for suppressing scattering of stem and leaf residue above and to the sides of the reaper cover 30. In other words, the reaper cover 30 may have a structure as shown in Fig. 4. Even if the structure as shown in Fig. 4 is adopted as the reaper cover 30, it is possible to have the effect of suppressing scattering of stem and leaf residue behind the flail mower 10.

[0036] In the above embodiment, the case where two extension arms (40A, 40B) are provided has been described, but the present invention is not limited to this. Three or more extension arms may be provided, or only one extension arm may be provided.

[0037] In the above embodiment, the extension arms 40A, 40B and the Z extension members 42A, 42B are described as hollow rectangular columnar members, but this is not limiting. For example, the extension arms 40A, 40B and the Z extension members 42A, 42B do not have to be hollow. Furthermore, as shown in FIG. 7 , the extension arms 40A′, 40B′ and the Z extension members 42A′, 42B′ may be hollow (or solid) columnar members with a pentagonal cross section. This can prevent the accumulation of stem and leaf residue on the upper side (+Z side) of the extension arms 40A, 40B, and can also prevent the accumulation of stem and leaf residue on the forward side (+Y side) of the Z extension members 42A, 42B in the traveling direction. To achieve the same effect, the extension arms 40A, 40B and the Z extension members 42A, 42B may be hollow cylindrical members or solid columnar members. Furthermore, the extension arms 40A, 40B and the Z extension members 42A, 42B may be hollow (or solid) triangular prism members. That is, if the upper surfaces of the extension arms 40A, 40B are not parallel to the horizontal plane and the front surfaces of the Z extension members 42A, 42B in the traveling direction are not parallel to the XZ plane, this has the effect of suppressing the accumulation of stem and leaf residue.

[0038] In the above embodiment, a case where one rubber mat 32 is attached to the fixed frame 44 is described, but this is not limited to this, and multiple rubber mats 32 may be attached to the fixed frame 44 by lining up in the X-axis direction.

[0039] In the above embodiment, a rubber mat 32 is used as the cover member, but this is not limiting. For example, a mat made of a material other than rubber that elastically deforms when subjected to a load from the front may also be used. Alternatively, a plate-shaped member 32' that is less likely to elastically deform, such as an iron plate, may be used as the cover member, as shown in FIG. 8. In this case, the upper end of the plate-shaped member 32' is attached to the fixed frame 44 via a hinge 33. As a result, when stem and leaf residue accumulates inside the reaper cover 30 and is subjected to a load from the stem and leaf residue, the plate-shaped member 32' swings. This swing allows the stem and leaf residue to be discharged from the underside of the reaper cover 30 to the outside. This reduces the load on the flail mower 10. The plate-shaped member 32' in FIG. 8 may also be a mat that elastically deforms when subjected to a load from the front. Also, in the example of FIG. 8, multiple plate-shaped members 32' may be arranged in the X-axis direction and attached to the fixed frame 44 via hinges 33.

[0040] The above-described embodiment is a preferred example of the present invention, but the present invention is not limited to this and can be modified in various ways without departing from the spirit of the present invention. [Explanation of symbols]

[0041] 10 Flail Mower 22 Rear cover 30 Harvester cover 32 Rubber mat (cover material) 34 Upper mesh member (scattering prevention member) 36A, 36B Side mesh members (scattering prevention members) 38A, 38B Residue retention prevention plate (adhesion suppression member) 40A, 40B Extension arm (arm part) 44 Fixed frame (frame part) 90 Tractor (vehicle) 100 Work equipment

Claims

1. A reaper cover is provided on the rear side of a reaper towed by a vehicle in the traveling direction, and prevents the reaper from scattering the reaper object behind the reaper, an arm portion provided on a rear side in a traveling direction of the reaper and extending rearward of the reaper; a frame portion extending in the width direction of the reaper and provided at a position spaced a predetermined distance from the rear end of the reaper via the arm portion; a plate-shaped or sheet-shaped cover member extending in the width direction of the reaper and suspended and held near an upper end by the frame portion; The cover for a reaper, characterized in that the cover member elastically deforms and / or swings relative to the frame portion when subjected to a load from the front of the object to be reaped.

2. 2. The reaper cover according to claim 1, further comprising a scattering prevention member for preventing scattering of the object to be cut from above or to the side between the cover member and the reaper.

3. 3. The reaper cover according to claim 2, wherein the scattering prevention member is in the form of a mesh.

4. The reaper cover according to claim 3 , further comprising an adhesion suppression member that covers a portion of the scattering suppression member and suppresses adhesion of the objects to be cut to the mesh-shaped scattering suppression member.

5. 3. The reaper cover according to claim 1, wherein the upper surface of the arm portion is not parallel to a horizontal plane.

6. 2. The reaper cover according to claim 1, wherein the predetermined interval is an interval that is 70 cm to 75 cm from a shaft about which the reaper blade of the reaper rotates.

7. a harvester towed by a vehicle; A reaper with a cover, comprising: the reaper cover according to any one of claims 1 to 6, provided on the reaper.

8. The reaper has a rear cover that, when closed, prevents scattering of the reaped material and, when opened, reduces the load caused by the reaped material; 8. The reaper with cover according to claim 7, wherein the reaper cover is provided on a reaper with the rear cover open.

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