Crop vine cutting device

Abstract

To provide a cutter for a vine of a crop capable of reliably transmitting a cutting force to the vine when cutting the vine of the crop and capable of preferably cutting the vine.SOLUTION: A cutter for a vine of a crop cuts a vine while moving in a field, and includes a vine receiving member that erects and receives a vine, and a cutting blade that cuts the vine received by the vine receiving member. It is preferable that the vine receiving member receives both sides of a cut portion of the vine to be cut by the cutting blade.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a device for cutting the vines of agricultural crops whilst moving through a field. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a vine cutting device disclosed in Patent Document 1 is known as a device for cutting the vines of agricultural crops. The vine cutting device disclosed in Patent Document 1 is configured to rake in the vines of sweet potato planted in furrows with a rake-in device that has a pair of left and right tines that rotate in a plane, and then cut the vines with vine cutting devices provided on both sides of the body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-192008 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the vine cutting device disclosed in Patent Document 1 cuts the vines without supporting them with other parts, making it difficult to reliably transmit the cutting force to the vines, and there are cases where the vines cannot be cut properly. The present invention has been made in consideration of the problems of the conventional technology described above, and aims to provide a device for cutting vines of agricultural crops that can reliably transmit cutting force to the vines and cut the vines well. [Means for solving the problem]

[0005] The technical means adopted by the present invention to solve the above problems are characterized as follows. The agricultural crop vine cutting device is a vine cutting device that cuts vines while moving in a farm field, and is provided with a vine receiving member that raises and receives the vines, and a cutting blade that cuts the vines received by the vine receiving member. The vine receiving member has a guide portion that guides the vines upward before they are cut as the vines move, and a holding portion that holds the vines received by the vine receiving member, and the lower end of the vine receiving member is formed with a pointed tip portion that points forward, and the guide portion has a first inclined surface that transitions upward as it moves from the front to the rear, and guides the vines from the tip portion toward the holding portion, and the pointed tip portion is provided at the lower end of the first inclined surface, and the vine receiving member has a second inclined surface that transitions upward as it moves from the rear to the front, and the holding portion is provided between the upper end of the first inclined surface and the lower end of the second inclined surface, and the first inclined surface and the second inclined surface are connected in a V shape via the holding portion. Preferably, the vine receiving member receives both sides of the cut portion of the vine cut by the cutting blade.

[0008] Preferably, the holding portion is formed between an upper end of the first inclined surface and a lower end of the second inclined surface and recessed rearward. Preferably, the cutting blade is provided with a vine support structure consisting of a pair of vine support members arranged side by side with a gap in the width direction perpendicular to the direction of movement and connected to each other, one of the pair of vine support members supports one of the two sides of the cutting portion, and the other of the pair of vine support members supports the other of the two sides of the cutting portion, and the cutting blade moves through the gap between the pair of vine support members.

[0009] Preferably, the vine support structure is composed of two flat plate-shaped vine support members arranged parallel to each other and facing each other. Preferably, the cutting blade is provided with a rotating shaft extending in a width direction perpendicular to the direction of movement and rotating about its axis, and the cutting blade is attached to the rotating shaft and rotates together with the rotating shaft about its axis to cut the vines supported by the vine support member.

[0010] Preferably, the vine support members are provided at intervals along the extension direction of the rotation shaft, and the cutting blades are arranged at positions corresponding to each of the vine support members in the extension direction. Preferably, when viewed from the axial direction of the rotation shaft, the holding portion is located inside the rotation locus of the tip of the cutting blade, and the pointed portion is located outside the rotation locus of the tip of the cutting blade.

[0011] Preferably, a cover is provided for covering the rotating shaft and the cutting blade from above, and the vine receiving member is fixed to the cover and disposed in front of the rotating shaft. Preferably, a coupling portion that is detachably coupled to a traveling vehicle is provided, and the rotating shaft rotates by power transmitted from the traveling vehicle. Effect of the Invention

[0012] According to the agricultural crop vine cutting device of the present invention, the vines can be raised and supported by the vine support member, and the vines supported by the vine support member can be cut by the cutting blade, so that the cutting force can be reliably transmitted to the vines and the vines can be cut well. [Brief description of the drawings]

[0013] [Figure 1] 1 is a side view showing the vine cutting device mounted on the rear of a traveling vehicle. FIG. [Diagram 2] This is a partially sectional rear view showing the main parts of the vine cutting device, in which the bottom of the vine cutting device is shown in rear view and the upper part is shown expanded in plan view. [Diagram 3] FIG. 2 is a side view showing a main part of the vine cutting device. [Figure 4] A rear view showing the rotating shaft, vine support structure, cutting blade, cross rod, etc. [Figure 5A] FIG. 2 is a side view showing a first embodiment of the vine support member. [Figure 5B] 13 is a side view showing a vine support member that does not have a retaining portion (a modified example of the vine support member). FIG. [Figure 6] This is a front view showing the vine support structure, cross rods, etc. [Figure 7] FIG. 11 is a side view showing a second embodiment of the vine support member. [Figure 8] FIG. 11 is a side view showing a third embodiment of the vine support member. [Figure 9] FIG. 4 is a rear cross-sectional view showing the rotating shaft, cutting blade, etc. [Figure 10] FIG. [Figure 11] This is a front view showing the state in which vines are received by the vine support structure. [Figure 12] This is a front view showing the state in which vines are supported by multiple vine support structures. [Figure 13] FIG. 4 is a side view showing the operation of the vine cutting device. [Figure 14] FIG. 4 is a side view showing the operation of the vine cutting device. [Figure 15]FIG. 4 is a side view showing the operation of the vine cutting device. [Figure 16] FIG. 2 is a side view of a working machine equipped with a vine cutting device and a soil disinfecting device. [Figure 17] 1 is a plan view showing the positional relationship between the vine support structure and the injection portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the crop vine cutting device according to the present invention will be described. The vine cutting device according to the present invention is preferably used as a device for cutting the vines of sweet potatoes, but can also be used for cutting the vines of other agricultural crops (for example, watermelon vines, melon vines, etc.). The vine cutting device according to the present invention is preferably used mainly for cutting vines that grow along the ground surface or underground. The vine cutting device according to the present invention is also preferably used for cutting the vines of agricultural crops after harvesting.

[0015] The vine cutting device according to the present invention is a vine cutting device that cuts vines while moving in a field. As shown in Fig. 1, the vine cutting device 1 of this embodiment is attached to the rear of a traveling vehicle 2 and is towed by the traveling vehicle 2 to move in a field. However, the vine cutting device 1 may also be attached to the front or side of the traveling vehicle 2. The type of the traveling vehicle 2 is not particularly limited, but in this embodiment, the traveling vehicle 2 is a tractor.

[0016] The traveling vehicle (tractor) 2 comprises a body 3 and a traveling device 4. The traveling device 4 has front wheels (not shown) and rear wheels 4R. The traveling device 4 supports the body 3 so that it can travel. A prime mover (not shown) that supplies power to the traveling device 4 and the like is mounted on the body 3. A PTO shaft 5 protrudes from the rear of the body 3 to extract power from the prime mover to the outside. A connecting mechanism 6 for connecting a working device such as the vine cutting device 1 is provided at the rear of the vehicle body 3. The connecting mechanism 6 is composed of a three-point link mechanism. The three-point link mechanism has a top link 6a, a lower link 6b, a lift rod 6c, and a lift cylinder (not shown). The connecting mechanism 6 can raise and lower the working device (such as the vine cutting device 1) connected to the connecting mechanism 6 relative to the vehicle body 3 by driving the lift cylinder.

[0017] As shown in Figs. 1 and 2, the vine cutting device 1 has a machine frame 10. The machine frame 10 has a gear case 11, a support arm 12, a transmission case 13, and a side frame 14. As shown in Fig. 2, the gear case 11 is disposed in the center of the machine frame 10 in the width direction (left-right direction). Hereinafter, the width direction of the machine frame 10 will be referred to as the "machine width direction". The support arms 12 protrude to the left and right from the gear case 11. The transmission case 13 is attached to the outer end of one (left side) support arm 12. The side frame 14 is attached to the outer end of the other (right side) support arm 12.

[0018] The gear case 11 is provided with a PIC shaft 15. The PIC shaft 15 protrudes forward from the gear case 11. Rotational power is transmitted to the PIC shaft 15 from the PTO shaft 5 of the traveling vehicle 2 via a universal joint 16. The power transmitted to the PIC shaft 15 is transmitted to a rotating body 20 via a gear transmission mechanism 17 in the gear case 11, a transmission shaft 18 in the support arm 12, and a chain transmission mechanism 19 in the transmission case 13. A rotating shaft 21 is connected to the rotating body 20. The rotating shaft 21 rotates by the power transmitted from the rotating body 20. In this manner, the rotating shaft 21 rotates by the power transmitted from the traveling vehicle 2.

[0019] As shown in Fig. 2, the rotating shaft 21 extends in the width direction of the machine. In other words, the rotating shaft 21 extends in a width direction (left-right direction) perpendicular to the direction of movement (forward direction) of the vine cutting device 1. The rotating shaft 21 rotates around an axis extending in the width direction of the machine. As shown by arrow A1 in Fig. 3, the rotating shaft 21 rotates so that the front side of the rotating shaft 21 faces downward from above. 1, the machine frame 10 is provided with a connecting bracket 22 and a mast 23. A rear end of a lower link 6b of a three-point linkage is connected to the connecting bracket 22. A rear end of a top link 6a of the three-point linkage is connected to the mast 23. The connecting bracket 22 and the mast 23 form a connecting portion of the vine cutting device 1 that is connected to the traveling vehicle 2.

[0020] The vine cutting device 1 can be attached to and detached from the traveling vehicle 2 by attaching and detaching the coupling part to the traveling vehicle 2. By mounting the vine cutting device 1 on the traveling vehicle 2, it can move through the field together with the traveling vehicle 2. When the vine cutting device 1 is not in use, it can be removed from the traveling vehicle 2. As shown in Figures 1 to 4, the vine cutting device 1 includes a vine receiving member 30 and a cutting blade 40. The vine receiving member 30 is a member that stands up and receives the vines. The cutting blade 40 cuts the vines received by the vine receiving member 30.

[0021] As the vine cutting device 1 moves, the vine receiving member 30 performs an operation (raising operation) to remove vines that have grown along the ground surface or underground from the ground surface or underground, and an operation (receiving operation) to support vines that have grown away from the ground surface or underground. As shown in FIG. 3 and FIG. 5A, the tendon receiving member 30 has a pointed portion 31, a guide portion 32, and a holding portion 33.

[0022] The pointed tip 31 is formed at the lower end of the tendon receiving member 30. The pointed tip 31 is pointed toward the front. In other words, the pointed tip 31 has a tapered shape that becomes thinner toward the front. In other words, the pointed tip 31 is formed in an acute angle shape with the tip facing forward in a side view. In the case of this embodiment, a small radius (arc-shaped portion) is formed at the tip of the pointed tip 31.

[0023] The tip 31 is pointed forward (has a tapered shape), so that it can penetrate under the vine and raise it up as the vine cutting device 1 moves. When the vine is growing underground, the tip 31 is positioned below the ground's surface. This allows the vine growing underground to rise up from the ground. When the vine is growing along the ground's surface, the tip 31 is positioned along the ground's surface. This allows the vine growing along the ground's surface to rise up from the ground.

[0024] The guide portion 32 guides the vine upward before it is cut. Specifically, the guide portion 32 guides the vine before it is cut by the cutting blade 40 from the tip portion 31 toward the holding portion 33. More specifically, the guide portion 32 guides the vine before it is cut, which is raised by the tip portion 31 as the vine cutting device 1 moves, toward the holding portion 33, which is located above the tip portion 31. The guide portion 32 has a first inclined surface 34 that transitions upward from the front to the rear. As shown in Figs. 3 and 5A, the first inclined surface 34 is formed in a straight line in a side view. As shown in Fig. 1, the first inclined surface 34 is inclined with respect to the ground surface (horizontal plane) GL. The inclination angle of the first inclined surface 34 with respect to the ground surface (horizontal plane) GL is an acute angle. The specific angle of the inclination angle with respect to the ground surface GL is set according to the thickness and type of the vine, and can be set to an angle in the range of 30° to 45°, for example.

[0025] 3 and 5A, a tip 31 is provided at the lower end of the first inclined surface 34, and a holding part 33 is provided at the upper end of the first inclined surface 34. The vine before being cut, which is raised by the tip 31, moves along the first inclined surface 34 as the vine cutting device 1 moves (forward), and is guided to the holding part 33. The pointed portion 31 and the guide portion 32 described above constitute the lower portion 30A of the vine receiving member 30. The side view shape of the lower portion 30A is formed so as to become gradually thicker (wider in the front-to-rear direction) toward the top. In addition to the lower portion 30A, the vine receiving member 30 has an upper portion 30B located above the lower portion 30A. The side view shape of the upper portion 30B is also formed so as to become gradually thicker (wider in the front-to-rear direction) toward the top. The retaining portion 33 is provided at the boundary between the lower portion 30A and the upper portion 30B.

[0026] The upper portion 30B of the vine receiving member 30 has a second inclined surface 35 that transitions upward from the rear to the front. That is, the second inclined surface 35 is inclined in the opposite direction to the first inclined surface 34. As shown in FIG. 3 and FIG. 5A, the second inclined surface 35 is also formed in a straight line in a side view, similar to the first inclined surface 34. Also, as shown in FIG. 1, the second inclined surface 35 is inclined with respect to the ground surface (horizontal plane) GL. The inclination angle of the second inclined surface 35 with respect to the ground surface (horizontal plane) GL is an acute angle. The specific angle of the inclination angle with respect to the ground surface GL is set according to the thickness and type of the vine, and can be set, for example, to an angle in the range of 30° to 45°. In this embodiment, the inclination angle of the second inclined surface 35 is set to be larger than the inclination angle of the first inclined surface 34.

[0027] As shown in Fig. 5A, an attachment portion 36 is provided on the upper portion of the upper portion 30B. As shown in Figs. 3, 4, and 6, an attachment body 54, which will be described later, is attached to the attachment portion 36. The attachment portion 36 has a through hole 36a. The attachment portion 36 is attached to the attachment body 54 by inserting a bolt BL1 through the through hole 36a and a hole provided in the attachment body 54 and screwing a nut onto the bolt BL1. The mounting body 54 is attached to the cover 50, which will be described later. This fixes the vine receiving member 30 to the cover 50. As shown in Figs. 1 and 3, the vine receiving member 30 is fixed to the front part of the cover 50 and disposed in front of the rotating shaft 21. The vine receiving member 30 is detachable from the cover 50.

[0028] As shown in FIG. 3 and FIG. 5A, the holding portion 33 is provided between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35. The first inclined surface 34 and the second inclined surface 35 are connected in a V-shape via the holding portion 33. The holding portion 33 is formed between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35, recessed toward the rear. In other words, the holding portion 33 is composed of a recess formed between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35. The holding portion 33 holds the vine received by the vine receiving member 30. Specifically, the holding portion 33 holds the vine received by the vine receiving member 30 by surrounding it from three sides, namely above, below, and behind. In other words, the vine is fitted into and held in the recess constituting the holding portion 33.

[0029] As shown in FIG. 5A, the recess constituting the holding portion 33 has a first portion 33a and a second portion 33b. The first portion 33a is a surface (approximately horizontal surface) substantially parallel to the ground surface GL and extends rearward from the upper end of the first inclined surface 34. The boundary between the first portion 33a and the first inclined surface 34 forms an angle of less than 180 degrees in a side view. In the case of this embodiment, the boundary between the first portion 33a and the first inclined surface 34 forms an obtuse angle in a side view, but may form a right angle or an acute angle. The second portion 33b is an arc-shaped surface that bulges downward and rearward. One end (lower end) of the second portion 33b is continuous with the rear end of the first portion 33a, and the other end (upper end) is continuous with the lower end of the second inclined surface 35.

[0030] In order to reliably hold the vine in the holding portion 33, it is preferable to set the length of the first portion 33a longer than the thickness (diameter) of the vine to be cut. It is also preferable to set the radius of the arc of the second portion 33b to be equal to or greater than the radius of the vine to be cut. It is also preferable to set the length of the first portion 33a longer than the radius of the arc of the second portion 33b. The dimensions of each portion are not particularly limited and are appropriately set according to the thickness of the vine to be cut. As an example, when the diameter of the vine to be cut is about 3 mm, the length of the first portion 33a is set to 10 mm or more, and the radius of the arc of the second portion 33b is set to 5 mm or more.

[0031] As shown in Fig. 15, the holding portion 33 is configured to hold the vine guided upward by the first inclined surface 34 and to receive the force applied from the cutting blade 40 when the vine is cut. In other words, the holding portion 33 has both the function of holding the vine and the function of receiving the vine when it is cut. As described below, when the rotating cutting blade 40 is closest to the first inclined surface 34 (see Fig. 15), the holding portion 33 is located closer to the base end than the tip end of the cutting blade 40, and the holding portion 33 and the cutting blade 40 are positioned so as to overlap each other in the vertical direction in a side view.

[0032] In this way, since the holding portion 33 can hold the vine and receive the force acting from the cutting blade 30, the vine can be prevented from escaping from the cutting blade 40 (being pushed and moved by the cutting blade 40) when cutting the vine. Therefore, the cutting force of the cutting blade 40 can be reliably transmitted to the vine, and the vine can be cut well. In this way, the vine receiving member 30 can cut the vines well by having the holding portion 33 that has both the function of holding the vines and the function of receiving the vines. Therefore, it is preferable that the vine receiving member 30 has the holding portion 33 that holds the vines. However, the vine receiving member 30 does not have to have the holding portion 33.

[0033] FIG. 5B is a diagram showing an example of a vine support member 30 that does not have a holding portion 33. As shown in FIG. 5A, the vine support member 30 that has the holding portion 33 has a recess that constitutes the holding portion 33 between the first inclined surface 34 and the second inclined surface 35. That is, the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35 are connected via the holding portion 33 that is constituted by the recess. In contrast, as shown in FIG. 5B, the vine support member 30 that does not have the holding portion 33 does not have a recess that constitutes the holding portion 33 between the first inclined surface 34 and the second inclined surface 35. Therefore, the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35 are directly connected (without passing through the holding portion 33 that is constituted by the recess).

[0034] When the vine support member 30 does not have the holding portion 33 (see FIG. 5B), the vine is cut while positioned at the V-shaped bend formed at the boundary between the first inclined surface 34 and the second inclined surface 35. In this case, the vine support member 30 can receive the force applied from the cutting blade 40 when the vine is cut near the upper end of the first inclined surface 34 (the portion close to the second inclined surface 35). In other words, in the case of the vine support member 30 without the holding portion 33, the first inclined surface 34 can perform the function of receiving the vine instead of the holding portion 33.

[0035] As shown in Figures 3, 5A, and 5B, a horizontal surface 37 that extends linearly in the front-to-rear direction is formed at the bottom of the vine support member 30. When cutting vines that extend along the ground surface, the horizontal surface 37 can be placed on the ground surface and used. When cutting vines that extend underground, the horizontal surface 37 can be buried in the ground and used. This allows the force that the vine support member 30 receives from the cutting blade 40 when cutting the vines with the cutting blade 40 to be received by the ground surface or the soil underground via the horizontal surface 37.

[0036] The vine support member 30 shown in Figures 1, 3, 5A, and 5B has an overall V-shaped shape in side view, but the shape of the vine support member 30 is not limited to this. The vine support member 30 can have a shape shown in Figures 7 and 8, for example. In Figures 1, 3, 5A, 5B, 7, and 8, the member indicated by the symbol BL4 is a bolt used when the vine support structure 60, which will be described later, is constructed using the vine support member 30.

[0037] Fig. 7 is a side view showing another embodiment (second embodiment) of the vine support member 30, and Fig. 8 is a side view showing yet another embodiment (third embodiment) of the vine support member 30. Below, the configurations of the vine support member 30 of these embodiments that are different from the vine support member 30 of the above-mentioned embodiment (first embodiment) will be described, and the same components as those of the vine support member 30 of the first embodiment will be given the same reference numerals and will not be described.

[0038] As shown in Fig. 7, the vine support member 30 of the second embodiment has a lower portion 30A in a side view that is substantially triangular with an acute angle at the tip (pointed portion 31). The vine support member 30 of the second embodiment has a longer horizontal surface 37 and a wider width (vertical width) of the lower portion 30A than the vine support member 30 of the first embodiment. The vine support member 30 of the second embodiment is superior to the vine support member 30 of the first embodiment in that the width of the lower portion 30A is wider and therefore the rigidity (strength) is higher. On the other hand, the vine support member 30 of the first embodiment is superior to the vine support member 30 of the second embodiment in that it is lighter in weight.

[0039] As shown in Fig. 8, the vine receiving member 30 of the third embodiment has a shape in which a notch 38 is provided in the lower part 30A of the vine receiving member 30 of the second embodiment. The notch 38 is formed by cutting out the rear edge of the lower part 30A in an arc shape toward the front. The vine support member 30 of the third embodiment is superior to the vine support member 30 of the first embodiment in that the width of the lower portion 30A is wider, so that the rigidity (strength) is high. In addition, since the vine support member 30 has the cutout portion 38, the vine support member 30 of the third embodiment is superior to the vine support member 30 of the second embodiment in that the vine support member 30 of the third embodiment is lighter in weight.

[0040] In the vine receiving member 30 of the above-mentioned embodiments (first, second, and third embodiments), the pointed portion 31 and the guide portion 32 constituting the lower portion 30A, the holding portion 33, and the upper portion 30B are integrally formed. In other words, the vine receiving member 30 is composed of a single member. However, the vine receiving member 30 may be composed of a combination of multiple members. For example, the upper portion 30B and the lower portion 30A may be composed of different members and then combined.

[0041] As shown in Figs. 1 to 4, 9 and 10, the cutting blade 40 is attached to the rotating shaft 21. The cutting blade 40 rotates together with the rotating shaft 21 around the axis of the rotating shaft 21. The cutting blade 40 cuts the vines received by the vine receiving member 30 as it rotates. The cutting blade 40 is provided at a position corresponding to the vine receiving member 30 in the extension direction of the rotating shaft 21 (machine width direction) (see Fig. 2). The position corresponding to the vine receiving member 30 is a position where the cutting blade 40 can cut the vines received by the vine receiving member 30.

[0042] As shown in Fig. 3, when viewed from the axial direction of the rotating shaft 21, the holding portion 33 of the vine receiving member 30 is located inside the rotation trajectory R1 of the tip of the cutting blade 40. This allows the vines held by the holding portion 33 to be reliably cut by the cutting blade 40. Also, when viewed from the axial direction of the rotating shaft 21, the pointed portion 31 of the vine receiving member 30 is located outside the rotation trajectory R1 of the tip of the cutting blade 40. This prevents the cutting blade 40 from coming into contact with the vines (vines not held by the holding portion 33) before they are raised by the pointed portion 31. 3, when viewed from the axial direction of the rotating shaft 21, the holding portion 33 of the vine receiving member 30 is located forward of the rotating shaft 21. This allows the vines supported from below by the vine receiving member 30 to be cut by the movement (rotation) of the cutting blade 40 from above to below, thereby enabling good cutting.

[0043] As shown in FIGS. 3, 4, 9, and 10, a bracket 41 is attached to the outer circumferential surface of the rotating shaft 21. A base end member 42 is attached to the base end of the cutting blade 40 by a bolt BL5 and a nut NT1. The base end member 42 is detachable from the bracket 41. Specifically, the base end member 42 can be attached to the bracket 41 by inserting the base end member 42 into the bracket 41 and tightening the bolt BL2. In addition, the base end member 42 can be removed from the bracket 41 by removing the bolt BL2. The cutting blade 40 is attached to the rotating shaft 21 by attaching the base end member 42 to the bracket 41. The cutting blade 40 can be removed from the rotating shaft 21 by removing the base end member 42 from the bracket 41.

[0044] The cutting blade 40 can be attached to and detached from the rotating shaft 21 by attaching and detaching it to and from the bracket 41 together with the base end member 42. This makes it possible to easily replace the cutting blade 40 with a new cutting blade 40 when the cutting blade 40 becomes worn or damaged. As shown in Figures 3 and 10, the cutting blades 40 are attached at 180° intervals in the circumferential direction of the rotating shaft 21. In other words, the two cutting blades 40 are attached so as to extend in opposite directions from the axis of the rotating shaft 21. Figures 4 and 9 show a state in which the two cutting blades 40 extend upward and downward from the rotating shaft 21. The two cutting blades 40 are attached at the same position in the extension direction (machine width direction) of the rotating shaft 21. In other words, the two cutting blades 40 are at the same position in the machine width direction.

[0045] However, the number of cutting blades 40 attached at the same position in the extension direction of the rotating shaft 21 is not limited to two, and may be one, or three or more. When three or more cutting blades 40 are attached at the same position in the extension direction of the rotating shaft 21, the three or more cutting blades 40 are attached at equal intervals in the circumferential direction of the rotating shaft 21. For example, when three cutting blades 40 are attached, the three cutting blades 40 are attached at 120° intervals in the circumferential direction of the rotating shaft 21.

[0046] As shown in Figures 1 and 3, the vine cutting device 1 is provided with a cover 50 that covers the upper parts of the rotating shaft 21 and the cutting blade 40. The cover 50 is attached to the machine frame 10 so as to cover the upper parts of the rotating shaft 21 and the cutting blade 40. The cover 50 extends in the machine width direction above the rotating shaft 21. The cover 50 can prevent an operator from coming into contact with the rotating shaft 21 and the cutting blade 40.

[0047] A rear cover 51 is attached to the rear of the cover 50. The rear cover 51 covers the rear of the rotating shaft 21 and the cutting blade 40. The rear cover 51 extends rearward and downward from the rear of the cover 50. The length of the rear cover 51 can be set to a length that allows the bottom end of the rear cover 51 to touch the ground. By touching the bottom end of the rear cover 51 to the ground, the ground surface can be leveled after the vine cutting work has been completed.

[0048] As shown in Figs. 1 to 3, a cross rod 52 is attached to the front of the cover 50. As shown in Fig. 2, the cross rod 52 extends in the width direction of the machine above the rotating shaft 21 and in parallel with the rotating shaft 21. The cross rod 52 is a rectangular tubular member. As shown in Fig. 3, the cross rod 52 is connected to the front of the cover 50 by a connecting member 53. The connecting member 53 is also shown in Fig. 2, but the cover 50 is omitted in Fig. 2. 3 and 6, the above-mentioned mounting body 54 is fixed to the upper part of the vine receiving member 30, and this mounting body 54 is attached to the horizontal rod 52. In this way, the vine receiving member 30 is attached to the horizontal rod 52.

[0049] As shown in Figs. 3 and 6, the mounting body 54 has a plate-shaped portion 54a and a cylindrical portion 54b. The plate-shaped portion 54a and the cylindrical portion 54b are integrally formed. The plate-shaped portion 54a is attached to the mounting portion 36 of the vine support member 30 by a bolt BL1. The cylindrical portion 54b is formed in a rectangular tube shape. The horizontal rod 52 is inserted into the cylindrical portion 54b. The cylindrical portion 54b is attached to the horizontal rod 52 by a bolt BL3. In this way, the mounting body 54 is attached to the horizontal rod 52. The vine support member 30 is attached to the horizontal rod 52 via the mounting body 54.

[0050] As described above, the vine receiving member 30 is a member that receives the vines cut by the cutting blade 40. The vine receiving member 30 may be configured to receive only one side (left or right) of the part (cutting part) of the vine that is cut by the cutting blade 40, but is preferably configured to receive both sides (left and right) of the cutting part. In other words, it is preferable that both sides of the part (cutting part) of the vine that is cut by the cutting blade 40 are received by the vine receiving member 30. By configuring in this way, it is possible to effectively prevent the vines from escaping from the cutting blade 40 during cutting. Therefore, it is possible to more reliably transmit the cutting force of the cutting blade 40 to the vines, and the vines can be cut well.

[0051] Below, we will explain the vine support structure 60, which is an example of a configuration for the vine support member 30 to support both sides of the cut portion of the vine. As shown in Fig. 2, the vine cutting device 1 is equipped with a vine support structure 60 composed of a pair of vine support members 30, 30. As shown in Fig. 6, the vine support structure 60 is composed of two flat vine support members 30 arranged parallel to each other and facing each other. The two vine support members 30, 30 are arranged side by side with a gap GP in the width direction (machine width direction) perpendicular to the direction of movement of the vine cutting device 1. The two vine support members 30, 30 have the same shape and are arranged so that they overlap when viewed from the axial direction (side) of the rotating shaft 21.

[0052] The two vine receiving members 30, 30 are connected to each other. Specifically, as shown in FIG. 6, the two vine receiving members 30, 30 are connected to each other by a bolt BL4 and a nut NT2. A cylindrical spacer 61 is interposed between the two vine receiving members 30, 30. The shaft of the bolt BL4 penetrates the inside of the spacer 61. The spacer 61 has a function of maintaining a constant gap GP between the two vine receiving members 30, 30. As shown in FIG. 3, when viewed from the axial direction of the rotating shaft 21, the bolt BL4 is located outside the rotation trajectory R1 of the tip of the cutting blade 40. This makes it possible to avoid interference between the cutting blade 40 and the bolt BL4 and the spacer 61.

[0053] As shown in Fig. 4, the gap GP between the two vine support members 30 is set to be larger than the thickness of the cutting blade 40. This allows the cutting blade 40 to move (rotate) through the gap GP between the two vine support members 30, 30. In order to reliably avoid interference with the cutting blade 40, it is preferable that the gap GP between the two vine support members 30 is set to be sufficiently larger than the thickness of the cutting blade 40. As an example, the gap GP between the two vine support members 30 can be set to be three to five times the thickness of the cutting blade 40.

[0054] The cutting blade 40 is preferably arranged parallel to the two vine receiving members 30, 30. The entire cutting blade 40 may be arranged parallel to the two vine receiving members 30, 30, but at least the part that cuts the vines needs to be arranged parallel to the two vine receiving members 30, 30. By arranging the cutting blade 40 in this way, the cutting blade 40 can be applied perpendicular to the direction in which the vines received by the two vine receiving members 30, 30 extend, so that the vines can be cut reliably.

[0055] As shown in Fig. 11, one of the pair of vine support members 30, 30 constituting the vine support structure 60 receives a portion TR2 on one side (left side) of the cut portion TR1 of the vine TR. The other of the pair of vine support members 30, 30 constituting the vine support structure 60 receives a portion TR3 on the other side (right side) of the cut portion TR1 of the vine TR. As a result, two points of the vine TR spaced apart from each other on either side of the cut portion TR1 are supported by the vine support members 30, 30, respectively.

[0056] With both sides of the vine cutting part TR1 being received from below by a pair of vine receiving members 30, 30, the cutting blade 40 moves from above to below through the gap GP between the pair of vine receiving members 30, 30. This allows the force applied to the vine when it is cut by the cutting blade 40 to be received by both sides of the vine cutting part TR1, preventing the vine from escaping when it is cut, and enabling the vine to be cut reliably.

[0057] In the above embodiment, the vine support structure 60 is described as being composed of a pair (two) of vine support members 30, but the vine support structure 60 may be composed of three or more vine support members 30. In this case, the vine support structure 60 is composed of three or more vine support members 30 that are arranged side by side with gaps between them in the machine width direction and connected to each other. The cutting blade 40 moves (rotates) through each of the two or more gaps formed by the three or more vine support members 30.

[0058] It is preferable to provide a plurality of vine receiving members 30 at intervals along the extension direction (machine width direction) of the rotating shaft 21. In this case, the plurality of vine receiving members 30 are attached to the cover 50 lined up at intervals in the machine width direction. When a plurality of vine receiving members 30 are provided, a plurality of cutting blades 40 are arranged at positions corresponding to the plurality of vine receiving members 30 in the extension direction of the rotating shaft 21. The plurality of cutting blades 40 are each attached to the rotating shaft 21.

[0059] 2, in this embodiment, a plurality of vine support structures 60 are provided at intervals along the extension direction of the rotating shaft 21. In addition, a plurality of cutting blades 40 are arranged at positions corresponding to the plurality of vine support structures 60 in the extension direction of the rotating shaft 21. With this configuration, as shown in Fig. 12, a long vine TR or multiple vines can be received by multiple vine receiving members 30 or multiple vine receiving structures 60 and cut by multiple cutting blades 40. Therefore, long vines can be cut into small pieces, and the efficiency of the vine cutting work can be greatly improved.

[0060] When multiple cutting blades 40 are arranged in the extension direction (machine width direction) of the rotating shaft 21, the phases of the multiple cutting blades 40 (positions of the cutting blades 40 in the circumferential direction of the rotating shaft 21) may all be the same, or some or all of them may be different. When the phases of the multiple cutting blades 40 are all the same, long vines can be cut at multiple points simultaneously, effectively preventing the vines from escaping when cut. When the phases of the multiple cutting blades 40 are different, the timing of cutting by each cutting blade 40 is shifted, so the load applied to the rotating shaft 21 etc. during cutting is reduced, and vibrations generated during cutting can be suppressed.

[0061] When multiple vine support members 30 or multiple vine support structures 60 are arranged in the extension direction of the rotating shaft 21, the number of vine support members 30 or multiple vine support structures 60 is not limited to the number shown in the figure and can be changed as appropriate. In addition, the position of the vine support members 30 or the vine support structures 60 in the machine width direction (the position in the extension direction of the rotating shaft 21) can be adjusted. The position of the vine support members 30 or the vine support structures 60 in the machine width direction can be adjusted by moving the cylindrical portion 54b along the cross rod 52 in the machine width direction.

[0062] When multiple cutting blades 40 are arranged in the extension direction of the rotating shaft 21, the number of cutting blades 40 is not limited to the number shown in the figure, and can be changed appropriately depending on the number of vine support members 30 or vine support structures 60. In addition, the position of the cutting blade 40 in the machine width direction (position in the extension direction of the rotating shaft 21) can be adjusted. The position of the cutting blade 40 in the machine width direction can be adjusted by moving the bracket 41 along the rotating shaft 21 in the machine width direction. Hereinafter, the action (operation) of the vine cutting device 1 of the above embodiment will be described with reference to Figures 13 to 15. In Figures 13 to 15, the movement direction of the vine cutting device 1 is indicated by arrow A2, and the movement (rotation) direction of the cutting blade 40 is indicated by arrow A3.

[0063] As shown in FIG. 1, the vine cutting device 1 is attached to the rear of a traveling vehicle 2 and is towed by the traveling vehicle 2 to move through a field where vines to be cut exist. When the vine cutting device 1 moves through the field, the tip 31 of the vine receiving member 30 moves along the ground surface GL or underground, and the tip of the tip 31 hooks and raises the vines that have grown along the ground surface or underground (see arrow A4 in FIG. 13). The vine TR raised by the tip of the tip 31 is guided rearward and upward along the first inclined surface 34 of the guide section 32 by further movement of the vine cutting device 1 (see arrow A5 in FIG. 14). The vine TR guided along the first inclined surface 34 moves from the upper end of the first inclined surface 34 toward the holding section 33 by further movement of the vine cutting device 1 (see arrow A6 in FIG. 14) and is held by the holding section 33. Then, the vine TR held by the holding portion 33 is cut by the rotational movement of the cutting blade 40 (see FIG. 15).

[0064] In this way, according to the vine cutting device 1 of the above embodiment, the vines growing along the ground surface or underground can be raised by the tip 31, guided to the holding part 33 by the guide part 32, and the vines held by the holding part 33 can be cut by the cutting blade 40. This makes it possible to reliably cut the vines growing along the ground surface or underground. The vine cutting device 1 according to the present invention can be used together with a soil disinfecting device 70 . Fig. 16 shows a state in which the vine cutting device 1 is used together with the soil disinfection device 70. In other words, Fig. 16 shows a working machine equipped with the vine cutting device 1 and the soil disinfection device 70. This working machine can cut vines and disinfect the soil while moving through a farm field.

[0065] The soil disinfection device 70 is a device that disinfects soil by injecting a chemical solution into the soil in a farm field. The soil disinfection device 70 includes a connecting part that is connected to the rear of the traveling vehicle 2 (or the rear of the vine cutting device 1), a tank that contains the chemical solution, a pump that pressure-feeds the chemical solution contained in the tank, and an injection part 71 that injects the chemical solution pressure-fed from the pump into the soil. In Fig. 16, only the injection part 71 is shown, and the connecting part, tank, and pump are not shown. As shown in FIG. 16, the injection unit 71 is disposed behind the vine cutting device 1. The injection unit 71 is inserted into the soil behind the vine cutting device 1. With the injection unit 71 inserted into the soil, it moves together with the traveling vehicle 2. With the injection unit 71 inserted into the soil, the pump is driven to supply the chemical solution in the tank to the injection unit 71. The supplied chemical solution is discharged from the tip of the injection unit 71. As a result, the chemical solution is injected from the injection unit 71 into the soil behind the vine cutting device 1.

[0066] As shown in Fig. 17, the soil disinfection device 70 has a plurality of injection units 71. The plurality of injection units 71 are arranged at intervals in the machine width direction. The plurality of injection units 71 are arranged at positions corresponding to the plurality of vine support structures 60 of the vine cutting device 1 in the machine width direction. That is, the injection units 71 are arranged behind each of the plurality of vine support structures 60. 17, the injection part 71 is disposed between the pair of vine receiving members 30, 30 (between the imaginary lines L1, L2) in the machine width direction. In other words, the injection part 71 is disposed behind the gap GP between the pair of vine receiving members 30, 30. This allows the vines present in front of the injection part 71 to be reliably cut by the cutting blade 40. Therefore, when the soil disinfection device 70 is moved together with the traveling vehicle 2, it is possible to prevent the vines from getting caught on the injection part 71.

[0067] When the vine cutting device 1 is used together with the soil disinfection device 70, the gap GP (see FIG. 4) between the two vine receiving members 30, 30 is set to be at least equal to or greater than the width of the portion of the injection part 71 that is inserted into the soil. This allows the cutting blade 40 to reliably cut the vines in front of the portion of the injection part 71 that is inserted into the soil. In addition, it is preferable that the lower end of the vine receiving member 30 is disposed at the same height as the lower end of the injection part 71 or lower than the lower end of the injection part 71. This allows the vines at a height that would cause them to get caught on the injection part 71 to be raised and cut by the vine receiving member 30, making it possible to more reliably prevent the vines from getting caught on the injection part 71.

[0068] According to the vine cutting device 1 according to the above embodiment, the following effects can be achieved. The crop vine cutting device 1 is a vine cutting device that cuts the vines while moving in a farm field, and is equipped with a vine receiving member 30 that raises and receives the vines, and a cutting blade 40 that cuts the vines received by the vine receiving member 30. According to this configuration, the vines are raised and received by the vine receiving member 30, and the vines received by the vine receiving member 30 can be cut by the cutting blade 40. Therefore, the vines can be prevented from escaping from the cutting blade 40 during cutting, and the cutting force of the cutting blade 40 can be reliably transmitted to the vines, allowing the vines to be cut well.

[0069] In addition, the vine receiving member 30 receives both sides TR2, TR3 of the cut portion TR1 of the vine TR cut by the cutting blade 40. According to this configuration, the vine receiving member 30 can receive the cutting force of the cutting blade 40 at both sides TR2, TR3 of the cutting portion TR1 of the vine TR, so that the vine can be more reliably prevented from escaping from the cutting blade 40 during cutting. Therefore, the cutting force of the cutting blade 40 can be more reliably transmitted to the vine, and the vine can be cut well. In addition, the vine receiving member 30 has a guide portion 32 that guides the vine TR upward as it moves before being cut. According to this configuration, the vines before being cut can be guided upward by the guide portion 32, so that vines at low positions before being cut, such as vines growing along the ground surface or vines underground, can be guided upward and cut by the cutting blade 40.

[0070] In addition, the vine receiving member 30 has a holding portion 33 that holds the vines received by the vine receiving member 30. According to this configuration, the vines received by the vine receiving member 30 can be held by the holding portion 33. Therefore, by holding the vines in the holding portion 33 during cutting, the vines can be reliably prevented from escaping from the cutting blade 40. Therefore, the cutting force of the cutting blade 40 can be reliably transmitted to the vines, and the vines can be cut well.

[0071] In addition, a pointed tip 31 that is pointed forward is formed at the lower end of the vine receiving member 30, and a guide portion 32 guides the vine from the pointed tip 31 toward the holding portion 33. According to this configuration, vines growing along the ground surface or underground can be hooked and lifted by the tip of the pointed portion 31 and guided along the guide portion 32 toward the holding portion 33. Therefore, vines growing along the ground surface or underground can be reliably guided toward the holding portion 33 and cut by the cutting blade 40.

[0072] In addition, the guide portion 32 has a first inclined surface 34 that transitions upward as it moves from the front to the rear, and a pointed portion 31 is provided at the lower end of the first inclined surface 34, and a holding portion 33 is provided at the upper end of the first inclined surface 34. According to this configuration, vines that have grown along the ground surface or underground can be hooked and lifted by the tip of the pointed portion 31 at the lower end of the first inclined surface 34, and then raised along the first inclined surface 34 and guided to the holding portion 33 at the upper end of the first inclined surface 34. Therefore, vines that have grown along the ground surface or underground can be reliably guided toward the holding portion 33 and cut by the cutting blade 40.

[0073] In addition, the vine support member 30 has a second inclined surface 35 that transitions upward as it moves from the rear to the front, and the retaining portion 33 is provided between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35, and the first inclined surface 34 and the second inclined surface 35 are connected in a V-shape via the retaining portion 33. According to this configuration, the vine can be held by the holding portion 33 in the V-shaped portion between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35, and therefore the vine held by the holding portion 33 can be effectively prevented from falling off from the holding portion 33. Therefore, the vine held by the holding portion 33 can be reliably cut by the cutting blade 40.

[0074] Further, the holding portion 33 is formed between the upper end of the first inclined surface 34 and the lower end of the second inclined surface 35 so as to be recessed rearward. According to this configuration, the vine TR can be held in the recess of the holding portion 33, so that the vine held by the holding portion 33 can be reliably prevented from falling off from the holding portion 33. Therefore, the vine held by the holding portion 33 can be reliably cut by the cutting blade 40. In addition, the vine cutting device 1 is equipped with a vine support structure 60 consisting of a pair of vine support members 30, 30 arranged side by side and connected to each other with a gap GP in the width direction perpendicular to the direction of movement of the device, one of the pair of vine support members 30, 30 supports one of the two sides of the cutting portion TR1, and the other of the pair of vine support members 30, 30 supports the other of the two sides of the cutting portion TR1, and the cutting blade 40 moves through the gap GP between the pair of vine support members 30, 30.

[0075] According to this configuration, when cutting the vines, both sides of the cutting portion TR1 of the vine TR can be supported by the pair of vine support members 30, 30, so that the vines can be cut reliably. In addition, the vine support structure 60 composed of the pair of vine support members 30, 30 has higher rigidity (strength) than a single vine support member 30, so that the vine support member 30 can be prevented from being deformed or damaged by the force applied from the cutting blade 40 when cutting the vines TR. Moreover, the vine support structure 60 is composed of two flat plate-like vine support members 30 arranged parallel to each other and facing each other. According to this configuration, it is possible to reduce the thickness (length in the machine width direction) of the vine support structure 60. Therefore, it is possible to arrange a large number of vine support structures 60 side by side in a limited small space.

[0076] In addition, the vine cutting device 1 is equipped with a rotating shaft 21 that extends in a width direction perpendicular to the direction of movement of the device and rotates around its axis, and the cutting blade 40 is attached to the rotating shaft 21 and rotates around its axis together with the rotating shaft 21 to cut the vines received by the vine receiving member 30. According to this configuration, the cutting blade 40 can be rotated to cut the vines received by the vine receiving member 30, so that the cutting blade 40 can be moved within a small space to cut the vines received by the vine receiving member 30. In addition, since no complicated mechanism is required to drive the cutting blade 40, the mechanism can be made compact. In addition, multiple vine support members 30 are provided at intervals along the extension direction of the rotating shaft 21, and multiple cutting blades 40 are arranged at positions corresponding to each of the multiple vine support members 30 in the extension direction.

[0077] According to this configuration, long vines or multiple vines can be received by multiple vine receiving members 30 and cut by multiple cutting blades 40. Therefore, long vines can be cut into small pieces and the efficiency of the vine cutting work can be greatly improved. When viewed from the axial direction of the rotating shaft 21, the holding portion 33 is located inside the rotation trajectory R1 of the tip of the cutting blade 40, and the pointed portion 31 is located outside the rotation trajectory R1 of the tip of the cutting blade 40. According to this configuration, when the cutting blade 40 is rotated, the vine held by the holding portion 33 can be reliably cut, and the cutting blade 40 can be prevented from coming into contact with the vine before it is raised by the pointed portion 31.

[0078] The vine cutting device 1 also includes a cover 50 that covers the rotating shaft 21 and the cutting blade 40 from above, and the vine receiving member 30 is fixed to the cover 50 and positioned in front of the rotating shaft 21. This configuration is safe because the cover 50 prevents the operator from coming into contact with the rotating shaft 21 and the cutting blade 40. In addition, since the vine receiving member 30 can be positioned in front of the rotating shaft 21, the vines received by the vine receiving member 30 can be cut by the cutting blade 40. In addition, the vine cutting device 1 is equipped with a connecting portion (connecting bracket 22, mast 23) that is detachably connected to the traveling vehicle 2, and the rotating shaft 21 rotates by power transmitted from the traveling vehicle 2.

[0079] According to this configuration, by connecting the connecting portion (connecting bracket 22, mast 23) to the traveling vehicle 2, the vine cutting device 1 can be moved as the traveling vehicle 2 travels. Therefore, there is no need to provide a moving mechanism for the vine cutting device 1 or to move the vine cutting device 1 manually. In addition, when the vine cutting device 1 is not in use, it can be removed from the traveling vehicle 2. In addition, because the rotating shaft 21 rotates by power transmitted from the traveling vehicle 2, there is no need to provide the vine cutting device 1 with a drive source for rotating the rotating shaft 21, and the vine cutting device 1 can be made smaller and lighter.

[0080] Although the embodiment of the present invention has been described above, the embodiment disclosed herein should be considered as illustrative and not restrictive in all respects. The scope of the present invention is indicated by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0081] 1 vine cutting device 21 Rotation axis 22 Connection part (connection bracket) 23 Mast 30 Vine support material 31 Tip 32 Information Department 33 Holding part 34 1st slope 35 Second slope 40 cutting blade 60 Vine support structure 50 Cover GP Gap between a pair of vine support members R1 Rotation trajectory of the cutting blade tip TR vine TR1 Vine cut

Claims

1. A vine cutting device that cuts vines while moving through a field, A vine support member for supporting the vines; A cutting blade for cutting the vines received by the vine receiving member; Equipped with The vine receiving member has a guide portion that guides the vines before cutting upward as the vines move, and a holding portion that holds the vines received by the vine receiving member, The lower end of the vine receiving member is formed with a pointed tip portion that is pointed forward, The guide portion has a first inclined surface that transitions upward as it moves from the front to the rear, and guides the tendon from the tip portion to the holding portion, The pointed portion is provided at a lower end of the first inclined surface, The vine receiving member has a second inclined surface that transitions upward from the rear to the front, the holding portion is provided between an upper end of the first inclined surface and a lower end of the second inclined surface, A vine cutting device, wherein the first inclined surface and the second inclined surface are connected in a V-shape via the holding portion.

2. 2. The vine cutting device according to claim 1, wherein the vine receiving member receives both sides of the cut portion of the vine cut by the cutting blade.

3. A vine cutting device as described in claim 1 or 2, wherein the holding portion is formed concavely toward the rear between the upper end of the first inclined surface and the lower end of the second inclined surface.

4. A vine support structure is provided which is composed of a pair of the vine support members which are arranged side by side with a gap in a width direction perpendicular to the direction of the movement and which are connected to each other, One of the pair of vine receiving members receives one of both sides of the cut portion, The other of the pair of vine receiving members receives the other of the two sides of the cut portion, The vine cutting device according to claim 2 , wherein the cutting blade moves through a gap between the pair of vine receiving members.

5. The vine support structure comprises two flat plate-shaped vine support members arranged parallel to each other and facing each other.

5. The vine cutting device according to claim 4, comprising:

6. A rotating shaft extending in a width direction perpendicular to the direction of the movement and rotating about an axis, The vine cutting device according to any one of claims 1 to 5, wherein the cutting blade is attached to the rotating shaft and rotates together with the rotating shaft around the axis to cut the vines received by the vine receiving member.

7. The vine support members are provided at intervals along the extension direction of the rotation shaft, The vine cutting device according to claim 6, wherein the cutting blades are arranged at positions corresponding to the vine receiving members in the extension direction.

8. A vine cutting device as described in claim 6 or 7, which quotes claim 5, wherein, when viewed from the axial direction of the rotating shaft, the holding portion is located inside the rotational locus of the tip of the cutting blade, and the pointed portion is located outside the rotational locus of the tip of the cutting blade.

9. A cover is provided which covers the rotating shaft and the cutting blade from above, The vine cutting device according to any one of claims 6 to 8, wherein the vine receiving member is fixed to the cover and arranged in front of the rotating shaft.

10. A coupling part that is detachably coupled to a traveling vehicle, The vine cutting device according to any one of claims 6 to 9, wherein the rotating shaft rotates by power transmitted from the traveling vehicle.

Images