JP6944184B2 - Agricultural work machine - Google Patents

Description

The present invention relates to an agricultural work machine. In particular, it relates to an agricultural work machine equipped with a work rotor for cultivating a field.

Conventionally, there is known an agricultural work machine which is attached to the rear part of a tractor via a hitch mechanism and obtains a driving force by being towed by the tractor. For example, the agricultural work machine described in Patent Document 1 is mounted on the rear part of a tractor, and when it is towed, a work rotor on the front side rotates to generate power, and the power is generated on the rear side via a chain mechanism. The structure is transmitted to the work rotor. In an agricultural work machine having such a structure, the work rotors on the front side and the rear side rotate as the tractor travels, and the tilling claws provided on the respective work rotors cultivate the field.

The agricultural work machine described in Patent Document 1 is configured such that the work rotor on the rear side rotates at a speed of 2 to 4 times that of the work rotor on the front side by adjusting the gear ratio. With this configuration, the rotation speed of the work rotor on the rear side becomes larger than the rotation speed of the work rotor on the front side, and the work efficiency of the work rotor on the rear side is improved.

U.S. Pat. No. 4,492,273

However, in an agricultural work machine as shown in Patent Document 1, the work rotor on the front side is designed to efficiently obtain a driving force, and the work rotor on the rear side can be efficiently cultivated within the range of the obtained driving force. Designed to be. As a result, the subsoil (also called subsoil) may not be sufficiently crushed. That is, a farming machine as shown in Patent Document 1 could not sufficiently cultivate.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an agricultural work machine capable of obtaining sufficient tillage ability in an agricultural work machine that obtains power by traction.

In the agricultural work machine according to the embodiment of the present invention, a plurality of first cultivated claw rotating bodies are provided, and a first rotor that generates rotational power by the soil acting on the first cultivated claw rotating body, and a plurality of second rotors. A cultivated claw rotating body is provided, and is located between a second rotor that is rotated by rotational power generated by the first rotor and the adjacent first cultivated claw rotating body among the plurality of first cultivated claw rotating bodies. It has a subsoiler provided.

In side view, the subsoiler may be in the rotation locus of the first rotor.

In the side view, the rotation locus of the first rotor and the rotation locus of the second rotor may overlap.

It further has a frame to which the first rotor, the second rotor, and the subsoiler are attached, and the subsoiler extends linearly from a connection portion with the frame to the inside of the rotation locus of the first rotor. It may protrude from the inside to the outside of the rotation locus of the first rotor.

The chisel further comprises a frame to which the first rotor, the second rotor, and the subsoiler are attached, and a chisel provided at an end of the subsoiler on a side away from the frame, and the chisel is the chisel. The front of the frame may have an inclined surface inclined downward, and may be outside the rotation locus of the first rotor in a side view.

The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends, and one of the first tillage claw rotating bodies adjacent to the subsoiler is fixed to the rotation axis. It has a flange and a plurality of first tillage claws attached to the flange, and each of the plurality of first tillage claws has a first surface on the side closer to the subsoiler in the first direction. It has a second surface on the opposite side of the first surface and a protruding portion protruding from the second surface to the side opposite to the first surface side, and the first surface is the main body of the plate-shaped member. It may face a surface.

The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends, and one of the first tillage claw rotating bodies adjacent to the subsoiler is fixed to the rotation axis. It has a flange and a plurality of first tillage claws attached to the flange, and each of the plurality of first tillage claws has a first surface on the side closer to the subsoiler in the first direction. The second surface on the opposite side of the first surface, the first projecting portion protruding from the first surface to the side opposite to the second surface side, and the side opposite to the first surface side from the second surface. The length of the first protruding portion from the first surface may be smaller than the length of the second protruding portion from the second surface.

Each of the plurality of first tillage claws may be attached to the flange so that the second surface faces the flange.

The agricultural work machine according to the embodiment of the present invention includes a first rotor provided with a plurality of first cultivated claw rotating bodies, a second rotor provided with a plurality of second cultivated claw rotating bodies, and the plurality of first rotors. Among the cultivated claw rotating bodies, the subsoiler provided between the adjacent first cultivated claw rotating bodies is provided, and each of the plurality of first cultivated claw rotating bodies has a plurality of first cultivated claws. However, each of the plurality of second cultivated claw rotating bodies has a plurality of second cultivated claws, and the first cultivated claw on the front projection surface in a state where the tip of the first cultivated claw is lowered to the lowest position. The area of the mapping of the second cultivated claw is larger than the area of the mapping of the second cultivated claw to the front projection surface when the tip of the second cultivated claw is lowered to the bottom.

In side view, the subsoiler may be in the rotation locus of the first rotor.

In the side view, the rotation locus of the first rotor and the rotation locus of the second rotor may overlap.

It further has a frame to which the first rotor, the second rotor, and the subsoiler are attached, and the subsoiler extends linearly from a connection portion with the frame to the inside of the rotation locus of the first rotor. It may protrude from the inside to the outside of the rotation locus of the first rotor.

The chisel further comprises a frame to which the first rotor, the second rotor, and the subsoiler are attached, and a chisel provided at an end of the subsoiler on a side away from the frame, and the chisel is the chisel. The front of the frame may have an inclined surface inclined downward, and may be outside the rotation locus of the first rotor in a side view.

The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends, and one of the first tillage claw rotating bodies adjacent to the subsoiler is fixed to the rotation axis. The plurality of first tillage claws have a flange to which the plurality of first tillage claws are attached, and each of the plurality of first tillage claws has a first surface closer to the subsoiler and the first surface in the first direction. It has a second surface on the opposite side of the above, and a protruding portion protruding from the second surface to the side opposite to the first surface side, and the first surface faces the main surface of the plate-shaped member. You may.

The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends, and one of the first tillage claw rotating bodies adjacent to the subsoiler is fixed to the rotation axis. The plurality of first tillage claws have a flange to which the plurality of first tillage claws are attached, and each of the plurality of first tillage claws has a first surface closer to the subsoiler and the first surface in the first direction. A second surface opposite to the first surface, a first projecting portion protruding from the first surface to the side opposite to the second surface side, and a second surface projecting from the second surface to the side opposite to the first surface side. It has two protrusions, and the length of the first protrusion from the first surface may be smaller than the length of the second protrusion from the second surface.

Each of the plurality of first tillage claws may be attached to the flange so that the second surface faces the flange.

According to the agricultural work machine according to the present invention, it is possible to provide an agricultural work machine capable of obtaining sufficient tillage ability in the agricultural work machine that obtains power by traction.

It is the schematic which looked at the whole structure of the agricultural work machine which concerns on one Embodiment of this invention from the left oblique side on the rear side. It is the schematic which looked at the whole structure of the agricultural work machine which concerns on one Embodiment of this invention from above. It is the schematic which looked at the whole structure of the agricultural work machine which concerns on one Embodiment of this invention from the diagonally above on the front side. It is the figure which looked at the whole structure of the agricultural work machine which concerns on one Embodiment of this invention from the side. It is an enlarged perspective view which looked at the whole structure of the agricultural work machine which concerns on one Embodiment of this invention from the left oblique side on the front side. It is a perspective view (A), a top view (B), a side view (C), and a front view (D) which show the front tilling claw of the agricultural work machine which concerns on one Embodiment of this invention. It is an enlarged view which looked at the subsoiler and the front work rotor of the agricultural work machine which concerns on one Embodiment of this invention from the front. The rotation locus of the first work rotor and the rotation locus of the second work rotor in the side view (A) showing the positional relationship between the first work rotor and the second work rotor of the agricultural work machine according to the embodiment of the present invention and the side view. It is a figure (B) which shows the region where is superposed. It is a top view which shows the positional relationship of the 1st working rotor and the 2nd working rotor of the agricultural work machine which concerns on one Embodiment of this invention. It is a figure which shows the positional relationship between the movable range of the subsoiler, and the 1st working rotor in the figure which looked at the whole structure of the agricultural working machine which concerns on one Embodiment of this invention from the side. It is a figure which shows the mapping of the 1st tillage claw and the 2nd tillage claw to the front projection plane in the state where the 1st tillage claw and the 2nd tillage claw of the agricultural work machine which concerns on one Embodiment of this invention are lowered at the lowest. .. It is a top view which shows the 1st tillage claw of the agricultural work machine which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the agricultural work machine of the present invention will be described with reference to the drawings. However, the agricultural work machine of the present invention can be carried out in many different modes, and is not construed as being limited to the contents of the examples shown below. In the drawings referred to in the present embodiment, the same parts or parts having the same functions are designated by the same reference numerals, and the repeated description thereof will be omitted.

Further, for convenience of explanation, terms indicating directions such as upward, downward, forward, backward, right, and left are used, but the direction in which gravity acts is downward, and vice versa. Further, the traveling direction of the traveling aircraft is forward, and vice versa. Further, facing forward, the right side is the right side and the left side is the left side.

In the present specification, a tilling work machine provided with a work rotor will be described as an example of the agricultural work machine, but the present invention can be applied to all agricultural work machines having at least two work rotors.

<First Embodiment>
[Structure of agricultural work machine 100]
The configuration of the agricultural work machine 100 of the present embodiment will be described. In the present embodiment, as the agricultural work machine 100, a cultivating work machine that is attached to the rear part of a traveling machine such as a tractor and is towed by the traveling machine to cultivate a field is illustrated.

FIG. 1 is a schematic view of the entire configuration of an agricultural work machine according to an embodiment of the present invention as viewed diagonally from the left side on the rear side. FIG. 2 is a schematic view of the overall configuration of the agricultural work machine according to the embodiment of the present invention as viewed from above. FIG. 3 is a schematic view of the entire configuration of the agricultural work machine according to the embodiment of the present invention as viewed from diagonally above on the front side. It should be noted that FIGS. 1 to 3 show a schematic configuration of the agricultural work machine 100 of the present embodiment, and some parts are omitted for convenience of explanation.

The agricultural work machine 100 of the present embodiment is roughly classified into a mounting unit 10, a tillage work unit 20, and a suppression work unit 30. Hereinafter, each part will be described in detail.

The mounting portion 10 has a top mast 11, a pair of lower links 12a and 12b, a pair of support members 13a and 13b, and a pair of connecting members 14a and 14b.

The support members 13a and 13b are fixed to the first support frame 21 and the second support frame 22 of the tilling work portion 20 to support the top mast 11. The lower links 12a and 12b are directly fixed to the first support frame 21. The connecting members 14a and 14b connect the top mast 11 and the lower links 12a and 12b.

The top mast 11 and the lower links 12a and 12b are connected to a three-point link mechanism (not shown) provided at the rear of the traveling machine such as a tractor. Since the structure of the three-point link mechanism is known, the description thereof is omitted here. By connecting the mounting portion 10 to the three-point link mechanism of the traveling machine body, the agricultural work machine 100 of the present embodiment is mounted on the rear part of the traveling machine body.

The tilling work unit 20 includes a first support frame 21, a second support frame 22, a pair of side plates 23a and 23b, a shield cover 24, a first work rotor 25, a second work rotor 26, a plurality of subsoilers 27, and a pair of regulations. It has members 29a and 29b, and a speed-increasing mechanism 40.

The first support frame 21 and the second support frame 22 are connected to the side plates 23a and 23b and support the side plates 23a and 23b. Further, as described above, the first support frame 21 and the second support frame 22 support the top mast 11 via the support members 13a and 13b. The first support frame 21 further supports the lower links 12a and 12b.

Further, the first support frame 21 supports a plurality of subsoilers 27. The plurality of subsoilers 27 are detachably fixed to the first support frame 21 via fixing members 28, respectively. The subsoiler 27 is provided between a plurality of first tillage claw rotating bodies 25d, which will be described later. The subsoiler 27 is a component that crushes and softens the core soil (also called lower soil) as the traveling machine travels, and is fixed to the first support frame 21 in plurality. The fixing member 28 can be attached to an arbitrary position of the first support frame 21.

A first working rotor 25 and a second working rotor 26 are erected between the side plates 23a and 23b. The shield cover 24 is erected between the side plates 23a and 23b and covers above the first working rotor 25 and the second working rotor 26. The first support frame 21, the second support frame 22, and the side plates 23a and 23b may be collectively referred to as a frame. In this case, it can be said that the first working rotor 25, the second working rotor 26, and the subsoiler 27 are attached to the frame. The shield cover 24 plays a role of preventing the scattering of soil lumps upward during the tilling work of the first work rotor 25 and the second work rotor 26.

Further, the regulation members 29a and 29b are attached to the side plates 23a and 23b, respectively. These regulating members 29a and 29b function as means for regulating the vertical movement of the pair of first support arms 33a and 33b that support the first cage roller 31, which will be described later.

The first working rotor 25 includes a first claw shaft 25a and a plurality of first tillage claws 25b. A plurality of first tillage claws 25b are arranged around the shaft at a predetermined mounting position of the first claw shaft 25a. Although the details will be described later, a plurality of claw flanges 25c are fixed to the first claw shaft 25a, and a plurality of first tillage claws 25b are fixed to each of the plurality of claw flanges 25c. A structure in which a plurality of first tillage claws 25b are fixed to one claw flange 25c is referred to as a first tillage claw rotating body 25d. In the present embodiment, six first tillage claws 25b are attached to one claw flange 25c. Further, a plurality of mounting positions of the first tillage claw 25b are provided at predetermined intervals in the longitudinal direction of the first claw shaft 25a. When the agricultural work machine 100 runs, the soil acts on the first tillage claw 25b, and rotational power is generated in the first work rotor 25.

The second working rotor 26 includes a second claw shaft 26a and a plurality of second tillage claws 26b. Similar to the first working rotor 25, a plurality of second tilling claws 26b are also arranged around the axis at a predetermined mounting position of the second claw shaft 26a. Although details will be described later, a plurality of claw flanges 26c are fixed to the second claw shaft 26a, and a plurality of second tillage claws 26b are fixed to each of the plurality of claw flanges 26c. A structure in which a plurality of second tillage claws 26b are fixed to one claw flange 26c is referred to as a second tillage claw rotating body 26d. In this embodiment, six second tillage claws 26b are attached to one claw flange 26c. Further, a plurality of mounting positions of the second tillage claw 26b are provided at predetermined intervals in the longitudinal direction of the second claw shaft 26a. The second working rotor 26 is rotated by the rotational power generated by the first working rotor 25.

In the present embodiment, the first tillage claw 25b is mounted on the first claw shaft 25a with a phase shift between adjacent mounting positions. That is, when the first working rotor 25 is viewed from the direction (horizontal direction) along the first claw shaft 25a, the plurality of first tillage claws 25b adjacent to each other at each mounting position are from one side of the first claw shaft 25a. They are arranged spirally toward the other side. The second tillage claw 26b is also attached to the second claw shaft 26a with the same configuration. As a result, the resistance of the first working rotor 25 and the second working rotor 26 during tilling can be reduced, and a uniform field surface with less unevenness can be obtained.

Further, the first claw shaft 25a and the second claw shaft 26a are rotatably attached to the side plates 23a and 23b, respectively, via bearings or the like. Further, the first claw shaft 25a and the second claw shaft 26a can be interlocked with each other via the speed increasing mechanism 40. In the present embodiment, the speed increasing mechanism 40 is provided on the side plate 23a, and the periphery thereof is protected by the cover member 40a.

The speed-increasing mechanism 40 has a function of increasing the rotation speed of the second work rotor 26 to be higher than the rotation speed of the first work rotor 25. For example, in the present embodiment, the speed increasing mechanism 40 causes the second working rotor 26 to rotate at about three times the speed of the first working rotor 25. In the present embodiment, the speed increasing mechanism 40 is configured by combining a plurality of sprockets having different sizes and a roller chain erected on the plurality of sprockets. However, the speed increasing mechanism 40 can be configured by combining a plurality of spur gears having different numbers of teeth.

The suppression working unit 30 has a first cage roller 31, a second cage roller 32, a pair of first support arms 33a and 33b, and a pair of second support arms 34a and 34b.

The first cage roller 31 has a structure in which a plurality of flat bars 31b are erected on a plurality of ring-shaped support members 31a. Similarly, the second cage roller 32 also has a structure in which a plurality of flat bars 32b are erected on a plurality of ring-shaped support members 32a. Although not shown in the present embodiment, both the support member 31a and the support member 32a have a rotation shaft inside an opening provided near the center. That is, the first cage roller 31 and the second cage roller 32 rotate around a rotation axis (not shown).

In the agricultural work machine 100 of the present embodiment, when the traveling machine moves forward as the traveling machine travels, the first cage roller 31 and the second cage roller 32 proceed while rotating after passing through the tilling work unit 20. At that time, a plurality of flat bars 31b and 32b are configured to crush and suppress the soil mass in the field cultivated by the tilling work unit 20.

The first cage roller 31 is rotatably supported by the first support arms 33a and 33b. One end of the first support arms 33a and 33b is rotatably connected to the side plates 23a and 23b, and the other end is connected to a rotation shaft (not shown) of the first cage roller 31. As described above, the vertical movement of the first support arms 33a and 33b can be regulated by the regulating members 29a and 29b provided in the tilling work unit 20.

The second cage roller 32 is rotatably supported by a pair of second support arms 34a and 34b. One end of these second support arms 34a and 34b is rotatably connected to the first support arms 33a and 33b, and the other end is connected to a rotation shaft (not shown) of the second cage roller 32. In the present embodiment, since one ends of the second support arms 34a and 34b are rotatably connected to the first support arms 33a and 33b, the movements of the first cage roller 31 and the second cage roller 32 in the vertical direction are achieved. There is a degree of freedom.

Further, for example, an electric cylinder or the like can be installed between the second support frame 22 (or the first support frame 21) and the second support arms 34a and 34b, and the second cage roller 32 can be lifted up to an arbitrary position. It may be configured. In this case, it is possible to crush and suppress the soil in the field only with the first cage roller 31. Further, in such a structure, since the load of the second cage roller 32 is applied to the first cage roller 31, it is possible to improve the suppression performance of the first cage roller 31.

As described above, the agricultural work machine 100 of the present embodiment is towed as the traveling machine travels, and the field surface is cultivated by the action of the first working rotor 25 and the second working rotor 26. Then, the soil mass in the field cultivated by the first working rotor 25 and the second working rotor 26 is crushed and suppressed by the action of the first cage roller 31 and the second cage roller 32.

[Structure of subsoiler 27 and first working rotor 25]
The detailed configuration of the subsoiler 27 and the first working rotor 25 will be described with reference to FIGS. 4 to 7. FIG. 4 is a side view of the overall configuration of the agricultural work machine according to the embodiment of the present invention. FIG. 5 is an enlarged perspective view of the entire configuration of the agricultural work machine according to the embodiment of the present invention as viewed diagonally from the left on the front side. FIG. 6 is a perspective view (A), a top view (B), a side view (C), and a front view (D) showing a front tillage claw of an agricultural work machine according to an embodiment of the present invention. FIG. 7 is an enlarged view of the subsoiler and the front work rotor of the agricultural work machine according to the embodiment of the present invention as viewed from the front.

As shown in FIGS. 4 and 5, the fixing member 28 is fixed to the first support frame 21. The fixing member 28 is fixed by a fastener such as a screw. By loosening the fastener, the fixing member 28 can be slid in the longitudinal direction of the first support frame 21. With this slide, the positional relationship between the subsoiler 27 and the first working rotor 25 can be adjusted. As shown in FIG. 5, the fixing member 28 is provided with through holes 281 and 283 penetrating the plate thickness direction of the fixing member 28. These through holes 281 and 283 are used to fix the height position of the subsoiler 27, respectively.

The subsoiler 27 is inserted into the hollow portion of the fixing member 28 and fixed. As shown in FIG. 5, the subsoiler 27 has a first arm portion 271, a second arm portion 273, a chisel 275, and a handle 277. A blade portion 2731 is provided on the front side of the second arm 273. The shape of the blade portion 2731 is such that the plate thickness of the second arm portion 273 becomes thinner toward the front end portion. In FIG. 4, the locus of the tip of the first tilling claw 25b, that is, the locus of the first tilling claw 25b farthest from the first claw shaft 25a when the first working rotor 25 rotates is shown as a rotation locus 250. There is. As shown in FIG. 4, in the side view, the first arm portion 271 and the second arm portion 273 of the subsoiler 27 exist in the rotation locus 250 of the first working rotor 25.

The first arm portion 271 is a linear plate-shaped member. The main surface of the first arm portion 271 is a surface that extends in the traveling direction and the vertical direction of the agricultural work machine 100. In other words, the main surface of the first arm portion 271 faces the first direction D1 in which the rotation shaft (first claw shaft 25a) of the first working rotor 25 extends. As shown in FIG. 4, the first arm portion 271 is provided with a plurality of through holes 279 that penetrate the first arm portion 271 in the plate thickness direction. The first arm portion 271 is inserted into the hollow portion of the fixing member 28, and the through hole 281 or 283 is aligned with the through hole 279. In this state, the height position of the subsoiler 27 with respect to the fixing member 28 is determined by inserting a fixing tool such as a pin into these through holes. The lower through hole 283 (when the fixing member 28 is provided with a plurality of through holes, the lowermost through hole) and the uppermost through hole 279-1 of the plurality of through holes 279 are aligned. The state in which the subsoiler 27 is lowered is the state in which the subsoiler 27 is lowered most downward. The upper through hole 281 (the uppermost through hole when the fixing member 28 is provided with a plurality of through holes) and the lowermost through hole 279-5 of the plurality of through holes 279 are aligned with each other. The state is the state in which the subsoiler 27 is raised most upward. The first arm portion 271 extends linearly from a portion fixed by the fixing member 28 toward the inside of the rotation locus 250 of the first working rotor 25 in a side view. By using a linear plate-shaped member as the first arm portion 271, the cost of the member can be reduced.

In the present embodiment, the configuration in which the first arm portion 271 is a linear plate-shaped member is illustrated, but if the first arm portion 271 extends from the portion fixed by the fixing member 28 toward the rotation locus 250. Often, for example, the first arm portion 271 may extend toward the rotation locus 250 while being curved. Further, the first arm portion 271 is not limited to a plate shape, and may be a columnar shape.

The second arm portion 273 is a curved plate-shaped member. The second arm portion 273 is curved so as to extend downward and forward. Of the curved second arm portion 273, the blade portion 2731 is provided on the side surface in the direction in which the second arm portion 273 is curved. In other words, the blade portion 2731 is provided on the front side of the second arm portion 273. The blade portion 2731 has a smaller inclination angle with respect to the horizontal plane toward the front. That is, the inclination angle of the front of the blade portion 2731 is closer to horizontal than that of the rear of the blade portion 2731. This tilt angle gradually changes from the front to the rear. By providing the blade portion 2731 in front of the second arm portion 273, it is possible to reduce the resistance generated by the action of the soil and the subsoiler 27 when the agricultural work machine 100 advances. Since the second arm portion 273 is curved as described above, as the agricultural work machine 100 advances, soil grass and the like move upward (in the direction of the first arm portion 271) along the blade portion 2731. Is pushed up. That is, the grass in contact with the second arm portion 273 is guided toward the inside of the rotation locus 250.

The main surface of the second arm portion 273 is a surface that extends in the traveling direction and the vertical direction of the agricultural work machine 100. In other words, the main surface of the second arm portion 273 faces the first direction D1 in which the rotation shaft (first claw shaft 25a) of the first working rotor 25 extends. The second arm portion 273 is connected to the first arm portion 271 at the connecting portion 272. In side view, the connecting portion 272 is inside the rotation locus 250. The second arm portion 273 extends downward and forward from the connecting portion 272 to the outside of the rotation locus 250 in a side view. In other words, the subsoiler 27 projects from the inside to the outside of the rotation locus 250 of the first working rotor 25.

The chisel 275 is connected to the second arm portion 273 at the connecting portion 274. Specifically, the chisel 275 is provided at the end of the subsoiler 27 on the side away from the first support frame 21. The chisel 275 has an inclined surface in which the front of the chisel 275 is inclined downward. The width of the inclined surface of the chisel 275 in the first direction D1 becomes smaller as the distance from the second arm portion 273 increases. In the side view, the chisel 275 is outside the rotation locus 250.

The handle 277 is provided at the upper end of the first arm portion 271. The shape of the handle 277 is such that the operator can easily grip the handle 277. In the example of this embodiment, the handle 277 has a U-shaped cylindrical shape. However, the shape of the handle 277 is not limited to the U-shaped cylindrical shape, and various shapes can be taken.

FIG. 6 is a perspective view (A), a top view (B), a side view (C), and a front view (D) showing a front tillage claw of an agricultural work machine according to an embodiment of the present invention. In FIG. 6, the top view (B) is a perspective view (A) viewed from the direction of B. The side view (C) is a view of the perspective view (A) viewed from the direction of C. The front view (D) is a view of the perspective view (A) viewed from the direction of D. The first direction D1 of FIG. 6B shows the same direction as the first direction D1 of FIG.

As shown in FIG. 6A, the first tillage claw 25b has a rectangular plate-shaped member bent at the bent portion 251. That is, the tip portion 252-1 and the root portion 252-2 of the first tillage claw 25b are plate-shaped, respectively. The first tillage claw 25b is provided with a through hole 253 for penetrating the first tillage claw 25b in the plate thickness direction and attaching to the claw flange 25c. The first tillage claw 25b is attached to the claw flange 25c via the through hole 253. A blade portion 255 is provided at the tip of the through hole 253 on the opposite side of the bent portion 251. As shown in FIG. 6C, the shape of the blade portion 255 is a sharp shape in which the plate thickness becomes thinner as it approaches the tip.

As shown in FIGS. 6B and 6D, the shape of the first tillage claw 25b is such that the tip portion 252-1 changes from the plate-shaped root portion 252-2 to the first direction D1 via the bending portion 251. It has a protruding shape. In other words, the root portion 252-2 has a first surface 257 and a second surface 259 opposite to each other in the first direction D1, and the tip portion 252-1 is on the second surface 259 side. Projects from the root portion 252-2 in the first direction D1 via the bent portion 251. The tip portion 252-1 may be referred to as a protruding portion protruding in the first direction D1 with respect to the root portion 252-2. As shown in FIG. 6, the first surface 257 of the root portion 252-2 is linear from the region where the through hole 253 is provided to the region closest to the blade portion 255 of the bent portion 251. That is, the root portion 252-2 does not protrude in the direction opposite to the first direction D1 from the first surface 257 of the region where the through hole 253 is provided. The tip portion 252-1 may protrude from the root portion 252-2 on the opposite side of the first direction D1.

FIG. 7 is an enlarged view of the subsoiler and the front work rotor of the agricultural work machine according to the embodiment of the present invention as viewed from the front. In FIG. 7, for convenience of explanation, only the first working rotor 25 (first tilling claw rotating body 25d), the subsoiler 27, the fixing member 28, and the first support frame 21 are shown. The configuration of the subsoiler 27 and the first tillage claw rotating body 25d adjacent to the first direction D1 of the subsoiler 27 will be described with reference to FIG. 7.

In the first tilling claw 25b of the first tilling claw rotating body 25d, of the first surface 257 and the second surface 259 of the root portion 252-2, the first surface 257 is the surface closer to the subsoiler 27. With reference to FIGS. 5 and 7, the first surface 257 and the second surface 259 of the root portion 252-2 are the traveling directions of the agricultural work machine 100, similarly to the first arm portion 271 and the second arm portion 273 of the subsoiler 27. And a surface that spreads in the vertical direction. In other words, the first surface 257 and the second surface 259 face the first direction D1. In other words, the first surface 257 and the second surface 259 are parallel to the main surface of the first arm portion 271 and the main surface of the second arm portion 273. Therefore, the first surface 257 faces the main surface of the first arm portion 271 and the main surface of the second arm portion 273.

As shown in FIGS. 5 and 7, the first tillage claw 25b is attached to the claw flange 25c in a state where the second surface 259 of the first tillage claw 25b is closer to the claw flange 25c than the first surface 257. .. That is, the second surface 259 faces the claw flange 25c. Since the tip portion 252-1 of the first tillage claw 25b protrudes from the root portion 252-2 in the first direction D1, the root portion 252-2 can be attached to the first arm portion 271 of the subsoiler 27 by attaching as described above. And can be brought closer to the second arm portion 273.

When the agricultural work machine 100 runs and the first tillage claw 25b is affected by the soil, the soil trying to escape in the opposite direction of the first direction D1 is blocked by the root portion 252-2. That is, when the first tillage claw 25b is acted on by the soil, it is possible to prevent the soil from escaping from the tip portion 252-1. As a result, the force of action received by the first tillage claw 25b from the soil can be efficiently converted into the rotational power of the first tillage claw rotating body 25d.

In FIG. 7, an offset portion OS is provided between the chisel 275 and the first tillage claw 25b in the first direction D1, but the configuration is not limited to this. As shown in FIG. 4, if the chisel 275 is outside the rotation locus 250, the first tillage claw 25b and the chisel 275 may overlap in the forward view of FIG.

As described above, according to the agricultural work machine 100 according to the present embodiment, the subsoiler 27 is provided between the adjacent first tillage claw rotating bodies 25d, and the inside of the rotation locus 250 of the first tillage claw rotating body 25d in the side view. For example, even if grass or the like is entangled with the first arm portion 271 and the second arm portion 273 of the subsoiler 27, the grass or the like entwined with the subsoiler 27 by the first tillage claw 25b can be removed. Can be removed. As a result, even in a field with a large amount of residue such as grass, the work can be continuously and smoothly performed. Since the second arm portion 273 is curved toward the front, grass or the like that has come into contact with the subsoiler 27 can be guided to the inside of the rotation locus 250 as the agricultural work machine 100 advances. 1 Removed by tilling claw 25b.

Further, since the chisel 275 is outside the rotation locus 250, the subsoiler 27 can be brought closer to the first tillage claw rotating body 25d. Therefore, the grass and the like entwined with the subsoiler 27 can be removed more efficiently. Further, the first surface 257 of the first tillage claw 25b faces the main surface of the first arm portion 271 and the main surface of the second arm portion 273, so that the first tillage claw 25b becomes a grass entwined with the subsoiler 27 or the like. There is a high possibility of contact. Therefore, the grass and the like entwined with the subsoiler 27 can be removed more efficiently.

[Structure of 1st working rotor 25 and 2nd working rotor 26]
The positional relationship between the first working rotor 25 and the second working rotor 26 will be described in detail with reference to FIGS. 8 and 9. FIG. 8 is a side view (A) showing the positional relationship between the first working rotor and the second working rotor of the agricultural work machine according to the embodiment of the present invention, and the rotation locus of the first working rotor and the second working rotor in the side view. It is a figure (B) which shows the region which overlaps with the rotation locus of. FIG. 9 is a top view showing the positional relationship between the first working rotor and the second working rotor of the agricultural work machine according to the embodiment of the present invention. 8 and 9 show only the members related to the first working rotor 25 and the second working rotor 26 for convenience of explanation.

As shown in FIG. 8A, the locus of the tip of the first tilling claw 25b, that is, the locus of the portion farthest from the first claw shaft 25a of the first tilling claw 25b when the first working rotor 25 rotates. It is shown as a rotation locus 250. Similarly, the locus of the tip of the second tilling claw 26b when the second working rotor 26 rotates, that is, the locus of the second working claw 26b farthest from the second claw shaft 26a is shown as the rotation locus 260. .. As shown in FIG. 8B, in the side view, the region 256 in which the rotation locus 250 and the rotation locus 260 overlap is indicated by diagonal lines.

As shown in FIG. 8, the rotation locus 250 of the first working rotor 25 overlaps with the claw flange 26c of the second working rotor 26 in a side view. On the other hand, the rotation locus 260 of the second working rotor 26 does not overlap with the claw flange 25c of the first working rotor 25 in the side view. The positions of the first claw shaft 25a and the second claw shaft 26a are adjusted so that the lower end of the rotation locus 250 and the lower end of the rotation locus 260 are in horizontal positions.

The top view shown in FIG. 9 shows a state in which the first tillage claw 25b is closest to and away from the second claw shaft 26a, and a state in which the second tillage claw 26b is closest to and away from the first claw shaft 25a. It is a top view which shows the state. In the state shown in FIG. 9, the distance L1 between the first tillage claw 25b and the second claw shaft 26a is shorter than the distance L2 between the second tillage claw 26b and the first claw shaft 25a.

As shown in FIG. 9, the second tillage claw 26b has a linear portion 261 and a curved portion 263. The tip of the blade portion 255 of the first tillage claw 25b extends beyond the curved portion 263 to the linear portion 261 in the second direction D2. That is, in the second direction D2, the blade portion 255 overlaps with the linear portion 261. The second direction D2 is a direction orthogonal to the first direction D1. In the second direction D2, the distance L3 where the first tillage claw 25b overlaps with the linear portion 261 is longer than the distance L1 between the first tillage claw 25b and the second claw shaft 26a in the state of FIG. The distance L3 is preferably twice or more the distance L1. More preferably, the distance L3 is four times or more the distance L1. In this embodiment, the distance L1 is about 20 mm and the distance L3 is about 80 mm. However, the distance L1 may be the same as the distance L3, and the distance L1 may be longer than the distance L3.

As described above, the rotation speed of the second working rotor 26 is faster than the rotation speed of the first working rotor 25. Further, the second tillage claw 26b has a shape suitable for tillage. Therefore, the soil of the soil is flipped up by the work of the second work rotor 26, and a large amount of soil adheres to the second claw shaft 26a. As described above, when the tip of the blade portion 255 of the first tillage claw 25b approaches the second claw shaft 26a, the soil adhering to the second claw shaft 26a can be removed. However, it is necessary to design the distance L1 so that the first tillage claw 25b and the second claw shaft 26a do not come into contact with each other. The distance L1 is determined by the amount of deflection of the second claw shaft 26a.

As shown in FIG. 9, in the first direction D1, the width W1 of the first tillage claw 25b is smaller than the width W2 of the second tillage claw 26b. In order to avoid interference between the first tillage claw 25b and the second tillage claw 26b, in the first direction D1, the end 258 of the first tillage claw 25b on the second tillage claw 26b side and the second tillage claw 26b 1 It is necessary to provide an offset portion OS between the tilling claw 25b side end portion 268 and the end portion 268. The tilling ability of the second tilling claw 26b is higher than the tilling ability of the first tilling claw 25b (a large amount of soil is cultivated by one action). Therefore, in order to increase the tilling ability of the agricultural work machine 100, it is preferable to arrange the second tilling claws 26b as densely as possible in the first direction D1. By making the width W1 of the first tillage claw 25b smaller than the width W2 of the second tillage claw 26b, the arrangement of the second tillage claw 26b in the first direction D1 can be made dense.

[Positional relationship between the movable range of the subsoiler 27 and the first working rotor 25]
The positional relationship between the movable range of the subsoiler 27 and the rotation locus 250 of the first working rotor 25 will be described with reference to FIG. FIG. 10 is a view showing the overall configuration of the agricultural work machine according to the embodiment of the present invention from the side, showing the positional relationship between the movable range of the subsoiler and the first work rotor. FIG. 10A is a diagram showing a state in which the subsoiler 27 is lowered most downward in the movable range of the subsoiler 27. In this state, the through hole 283 of the fixing member 28 shown in FIG. 5 and the through hole 279-1 of the subsoiler 27 shown in FIG. 4 are aligned and fixed. FIG. 10B is a diagram showing a state in which the subsoiler 27 is raised most upward in the movable range of the subsoiler 27. In this state, the through hole 281 of the fixing member 28 shown in FIG. 5 and the through hole 279-5 of the subsoiler 27 shown in FIG. 4 are aligned and fixed.

In any of the states (A) and (B) of FIG. 10, the first arm portion 271, the second arm portion 273, and the connecting portion 272 are inside the rotation locus 250. Since the first arm portion 271 extends linearly from the portion fixed by the fixing member 28 toward the inside of the rotation locus 250 of the first working rotor 25, even when the subsoiler 27 is moved up and down, The first arm portion 271 and the second arm portion 273 above a certain region exist inside the rotation locus 250. Therefore, even when the subsoiler 27 is moved up and down, the efficiency of removing grass and the like entwined with the subsoiler 27 by the first tilling claw 25b can be maintained. Further, in any of the states (A) and (B) of FIG. 10, the chisel 275 is outside the rotation locus 250.

[Mapping of the first tillage claw 25b and the second tillage claw 26b to the front projection surface]
In order to clarify the difference between the function of the first tillage claw 25b and the function of the second tillage claw 26b, about the mapping of each tillage claw to the front projection surface when each tillage claw is lowered to the bottom. This will be described with reference to FIG. FIG. 11 shows a mapping of the first tillage claw and the second tillage claw to the front projection surface in a state where the first tillage claw and the second tillage claw of the agricultural work machine according to the embodiment of the present invention are lowered to the lowest position. It is a figure which shows. As shown in FIG. 11, the first area 25e of the map of the first tillage claw 25b to the front projection surface in the state where the first tillage claw 25b is lowered to the bottom within the range of the rotation locus 250 is the rotation locus 260. Within the range of, the second cultivated claw 26b is larger than the second area 26e of the mapping of the second cultivated claw 26b to the front projection plane in the state where it is lowered to the bottom.

Since the first area 25e is larger than the second area 26e, the first tillage claw 25b has a greater force to be acted on by the soil than the second tillage claw 26b. Therefore, the first tillage claw 25b can efficiently obtain rotational power from the soil. On the other hand, since the second tillage claw 26b has a smaller force of action from the soil than the first tillage claw 25b, the second tillage claw 26b efficiently suppresses the decrease in the rotational power obtained by the first tillage claw 25b. The soil can be cultivated. Further, since the area near the tip of the first tillage claw 25b is particularly large, the efficiency of removing the soil adhering to the second claw shaft 26a by the first tillage claw 25b is high.

<Second Embodiment>
[Shape of 1st tillage claw 25bA]
The agricultural work machine 100A according to the second embodiment will be described with reference to FIG. The agricultural work machine 100A of the present embodiment is similar to the agricultural work machine 100 according to the first embodiment, but the shape of the first tillage claw 25bA is different from the shape of the first tillage claw 25b of the agricultural work machine 100. It differs from the agricultural work machine 100 in that. Since the other configurations of the agricultural work machine 100A are the same as the configurations of the agricultural work machine 100, the description thereof will be omitted, and the shape of the first tillage claw 25bA will be described below.

FIG. 12 is a top view showing a first tillage claw of an agricultural work machine according to an embodiment of the present invention. As shown in FIG. 12, the root portion 252A-2 of the first tillage claw 25bA has a projecting portion 300A projecting in the direction opposite to the first direction D1. As shown in FIG. 12, in the first direction D1, the length L5 at which the protrusion 300A protrudes from the first surface 257A of the region provided with the through hole 253A is the second surface of the region provided with the through hole 253A. The length at which the tip portion 252A-1 protrudes from 259A is smaller than the length L6.

As described above, since the first tillage claw 25bA has the protruding portion 300A, the force of action that the first tillage claw 25bA receives from the soil is increased while suppressing the interference with the subsoiler 27A and the second tillage claw 26bA. be able to.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit.

10: Mounting part, 11: Top mast, 12a: Lower link, 13a: Support member, 14a: Connecting member, 20: Tilling work part, 21: First support frame, 22: Second support frame, 23a, 23b: Side Plate, 24: Shield cover, 25: 1st working rotor, 25a: 1st claw shaft, 25b: 1st cultivated claw, 25c: Claw flange, 25d: 1st cultivated claw rotating body, 25e: 1st area, 26: 2nd working rotor, 26a: 2nd claw shaft, 26b: 2nd cultivated claw, 26c: Claw flange, 26d: 2nd cultivated claw rotating body, 26e: 2nd area, 27: Subsoiler, 28: Fixing member, 29a: Regulatory member, 30: Suppression work part, 31: 1st cage roller, 31a, 32a: Support member, 31b, 32b: Flat bar, 32: 2nd cage roller, 33a: 1st support arm, 34a: 2nd support arm, 40 : Acceleration mechanism, 40a: Cover member, 100: Agricultural work machine, 250: Rotation locus, 251: Bending part, 252-1: Tip part, 252-2: Root part, 253: Through hole, 255: Blade part, 256 : Area, 257: 1st surface, 258: end, 259: 2nd surface, 260: rotation locus, 261: linear part, 263: curved part, 268: end, 271: 1st arm part, 272, 274: Connection part, 273: Second arm part, 275: Chisel, 277: Handle, 279, 281, 283: Through hole, 300A: Protruding part

Claims (12)

A first rotor is provided with a plurality of first cultivated claw rotating bodies, and the soil acts on the first cultivated claw rotating body to generate rotational power.
A second rotor, which is provided with a plurality of second tillage claw rotating bodies and is rotated by the rotational power generated by the first rotor, and
Among the plurality of first tilling claws rotating body, it has a, and Sabusoira provided between the first tilling claws rotating body adjacent,
In the side view, the subsoiler is in the rotation locus of the first rotor.
The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends.
One of the first tillage claw rotating bodies adjacent to the subsoiler has a flange fixed to the rotation shaft and a plurality of first tillage claws attached to the flange.
Each of the plurality of first tillage claws has a first surface on the side close to the subsoiler, a second surface on the opposite side of the first surface, and the second surface to the first surface in the first direction. It has a protrusion that protrudes to the opposite side to the side,
The first surface is an agricultural work machine facing the main surface of the plate-shaped member. A first rotor is provided with a plurality of first cultivated claw rotating bodies, and the soil acts on the first cultivated claw rotating body to generate rotational power.
A second rotor, which is provided with a plurality of second tillage claw rotating bodies and is rotated by the rotational power generated by the first rotor, and
Among the plurality of first cultivated claw rotating bodies, the subsoiler provided between the adjacent first cultivated claw rotating bodies is provided.
In the side view, the subsoiler is in the rotation locus of the first rotor.
The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends.
One of the first tillage claw rotating bodies adjacent to the subsoiler has a flange fixed to the rotation shaft and a plurality of first tillage claws attached to the flange.
Each of the plurality of first tillage claws has a first surface on the side close to the subsoiler, a second surface on the opposite side of the first surface, and the first surface to the second surface in the first direction. It has a first protruding portion that protrudes to the side opposite to the side, and a second protruding portion that protrudes from the second surface to the side opposite to the first surface side.
An agricultural work machine in which the length of the first protrusion from the first surface is smaller than the length of the second protrusion from the second surface. The agricultural work machine according to claim 1 or 2, wherein the rotation locus of the first rotor and the rotation locus of the second rotor overlap each other in a side view. Further comprising a frame to which the first rotor, the second rotor, and the subsoiler are attached.
The agricultural work according to claim 1 or 2, wherein the subsoiler linearly extends from the connection portion with the frame to the inside of the rotation locus of the first rotor and projects from the inside to the outside of the rotation locus of the first rotor. Machine. A frame to which the first rotor, the second rotor, and the subsoiler are attached,
A chisel provided at the end of the subsoiler on the side away from the frame,
Have more
The agricultural work machine according to claim 1 or 2, wherein the chisel has an inclined surface in which the front surface of the chisel is inclined downward and is outside the rotation locus of the first rotor in a side view. The agricultural work machine according to claim 1 or 2 , wherein each of the plurality of first tillage claws is attached to the flange so that the second surface faces the flange. A first rotor provided with a plurality of first tillage claw rotating bodies, and
A second rotor provided with a plurality of second tillage claw rotating bodies, and
Among the plurality of first cultivated claw rotating bodies, the subsoiler provided between the adjacent first cultivated claw rotating bodies is provided.
Each of the plurality of first tillage claw rotating bodies has a plurality of first tillage claws.
Each of the plurality of second tillage claw rotating bodies has a plurality of second tillage claws.
The area of the mapping of the first tillage claw to the front projection surface when the tip of the first tillage claw is lowered to the bottom is the front projection when the tip of the second tillage claw is lowered to the bottom. much larger than the area of the mapping of the second tilling claws to the surface,
In the side view, the subsoiler is in the rotation locus of the first rotor.
The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends.
One of the first tillage claw rotating bodies adjacent to the subsoiler has a flange fixed to the rotation shaft and to which the plurality of first tillage claws are attached.
Each of the plurality of first tillage claws has a first surface on the side close to the subsoiler, a second surface on the opposite side of the first surface, and the second surface to the first surface in the first direction. It has a protrusion that protrudes to the opposite side to the side,
The first surface is an agricultural work machine facing the main surface of the plate-shaped member. A first rotor provided with a plurality of first tillage claw rotating bodies, and
A second rotor provided with a plurality of second tillage claw rotating bodies, and
Among the plurality of first cultivated claw rotating bodies, the subsoiler provided between the adjacent first cultivated claw rotating bodies is provided.
Each of the plurality of first tillage claw rotating bodies has a plurality of first tillage claws.
Each of the plurality of second tillage claw rotating bodies has a plurality of second tillage claws.
The area of the mapping of the first tillage claw to the front projection surface when the tip of the first tillage claw is lowered to the bottom is the front projection when the tip of the second tillage claw is lowered to the bottom. Larger than the area of the mapping of the second tillage claw to the surface,
In the side view, the subsoiler is in the rotation locus of the first rotor.
The subsoiler has a plate-like member whose main surface faces the first direction in which the rotation axis of the first rotor extends.
One of the first tillage claw rotating bodies adjacent to the subsoiler has a flange fixed to the rotation shaft and to which the plurality of first tillage claws are attached.
Each of the plurality of first tillage claws has a first surface on the side close to the subsoiler, a second surface on the opposite side of the first surface, and the first surface to the second surface in the first direction. It has a first protruding portion that protrudes to the side opposite to the side, and a second protruding portion that protrudes from the second surface to the side opposite to the first surface side.
An agricultural work machine in which the length of the first protrusion from the first surface is smaller than the length of the second protrusion from the second surface. The agricultural work machine according to claim 7 or 8 , wherein the rotation locus of the first rotor and the rotation locus of the second rotor overlap each other in a side view. Further comprising a frame to which the first rotor, the second rotor, and the subsoiler are attached.
The agricultural work according to claim 7 or 8 , wherein the subsoiler linearly extends from the connection portion with the frame to the inside of the rotation locus of the first rotor and protrudes from the inside to the outside of the rotation locus of the first rotor. Machine. A frame to which the first rotor, the second rotor, and the subsoiler are attached,
A chisel provided at the end of the subsoiler on the side away from the frame,
Have more
The agricultural work machine according to claim 7 or 8 , wherein the chisel has an inclined surface in which the front surface of the chisel is inclined downward and is outside the rotation locus of the first rotor in a side view. The agricultural work machine according to claim 7 or 8 , wherein each of the plurality of first tillage claws is attached to the flange so that the second surface faces the flange.

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