JP6983390B2 - Working machine - Google Patents

Description

The present invention relates to a working machine. In particular, the present invention relates to a work machine attached to the rear part of a traveling machine body and performing a substitute scraping work by rotating a tiller rotor.

Conventionally, as a working machine for performing a puddling work in a field with a small amount of labor, a puddling work machine that is attached to the rear part of a traveling machine such as a tractor and is towed is known. Such a puddling work machine is a cultivating rotor that rotates a plurality of claws attached to a rotating shaft to scrape the field, and a ground leveling body (equipped behind the cultivating rotor) that evens out crushed soil. It also has a leveler (also called an apron) and a leveler provided at the rear of the leveling body and rotatably supported in the vertical direction with respect to the leveling body. As the puddling work machine towed by the traveling machine progresses, the soil crushed by the tiller rotor is sent backward together with the water and leveled flat by the cooperation of the leveling body and the leveler. As a result, soil and fertilizer can be mixed, and the surface of the field can be finished flat.

Since the traveling machine towing the puddling work machine weighs several tons, the passing traces (ruts) of the wheels remaining after traveling may be a problem. Specifically, as a result of the soil being pushed out to the side by the passage of the wheels, the amount of soil in the ruts is extremely small, and even if the field is scraped with a tiller rotor, the ruts are difficult to finish flat. There was a problem.

On the other hand, conventionally, a farming machine has a structure in which a spiral claw is provided on a rotating shaft body to which a plurality of tilling claws are attached, and the soil raised by the passing of the wheels of the traveling machine by the spiral claw is returned to the wheel passage trace. (Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-2464669

However, the agricultural work machine described in Patent Document 1 needs to add a special claw called a spiral claw in addition to a normal tillage claw, and has a problem that the manufacturing cost increases. In addition, since a large force is received from the soil on the spiral claws during tilling, there is a problem that the rotational resistance of the tilling rotor becomes large and the drive load becomes large.

An object of the present invention has been made in view of the above problems, and an object of the present invention is to provide a working machine that realizes a uniform finish in a field by arranging tillage claws.

The working machine according to the embodiment of the present invention is mounted on the rear portion of the traveling machine body, and a plurality of tillages arranged in the circumferential direction of the rotating shaft with respect to each of the plurality of mounting portions arranged in the axial direction of the rotating shaft. The plurality of tilling claws are provided with a tilling rotor portion having a claw, and the plurality of tilling claws are a first-shaped first tilling claw in which the lateral blade portion is curved in the first direction along the rotation axis, and the first tilling claw is in the opposite direction to the first direction. The plurality of mounting portions include a second cultivated claw having a first shape in which the lateral blade portion is curved in a second direction, and a third cultivated claw having a second shape in which the lateral blade portion is curved in the first direction. Of these, at least the first tilling claw and the second tilling claw are arranged in the first mounting portion, and at least the first mounting portion is arranged in the second mounting portion adjacent to the first mounting portion in the first direction. The cultivated claw and the third cultivated claw are arranged.

In the first mounting portion, the first tilling claw and the second tilling claw are arranged at positions facing each other, and in the second mounting portion, the first tilling claw and the third tilling claw face each other. It is preferable that it is arranged in a position where it is used.

According to the working machine of the present invention, it is possible to provide a working machine that realizes a uniform finish in a field by arranging tillage claws.

It is a top view which shows the whole structure of the working machine which concerns on one Embodiment of this invention. It is a side view which shows the whole structure of the working machine which concerns on one Embodiment of this invention. It is a figure which shows the structure of the tilling rotor part in the working machine which concerns on one Embodiment of this invention. It is a figure which shows the arrangement example in each mounting part of the tilling claw in the working machine which concerns on one Embodiment of this invention. It is a figure which shows the positional relationship between the tilling claw in the working machine which concerns on one Embodiment of this invention, and the wheel passing trace of a traveling machine. It is a figure which shows the arrangement example in the 1st mounting part of the tilling claw in the working machine which concerns on one Embodiment of this invention. It is a figure which shows the arrangement example of the tilling claw in the working machine which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the working machine of the present invention will be described with reference to the drawings. However, the working machine of the present invention can be implemented in many different modes, and is not limited to the description of the examples shown below. In the drawings referred to in this embodiment, the same parts or parts having similar functions are designated by the same reference numerals, and the description thereof will be omitted.

Further, for convenience of explanation, the terms upper (upper) and lower (lower) will be used, but the upper (upper) indicates the direction away from the horizontal plane, and the lower (lower) indicates the direction toward the horizontal plane. Similarly, the terms front (front side) or rear (rear side) will be used for explanation, but the front (front side) indicates the direction in which the traveling machine is located with respect to the work machine, and the rear (rear side) is the front. Indicates the opposite direction by 180 °.

The present invention can be applied to a general working machine such as a cultivator or a scraper, which is connected to the rear part of a traveling machine such as a tractor and cultivates or agitates soil by rotating a cultivator claw. In the first embodiment, the features of the present invention will be described using a substitute scraper as an example of the working machine, but the present invention is not limited thereto.

<First Embodiment>
[Structure of working machine 10]
FIG. 1 is a plan view showing an overall configuration of a working machine according to an embodiment of the present invention. FIG. 2 is a side view showing the overall configuration of the working machine according to the embodiment of the present invention. As shown in FIGS. 1 and 2, the working machine 10 according to the first embodiment includes a working unit 100, an extension working unit 200, a switching unit 300, a connecting unit 400, a leveler control unit 500, and a tiller rotor unit 600 (FIG. 1 and FIG. 2).

The working machine 10 of the present embodiment is attached to the rear part of the traveling machine body 20 such as a tractor and is towed in the field. In the plan view shown in FIG. 1, the working machine 10 has a longitudinal direction in a direction perpendicular to the traveling direction of the traveling machine body 20. In the present embodiment, this longitudinal direction may be referred to as a left-right direction of the working machine 10 or a width direction of the working machine 10.

The working unit 100 has a shield cover 110, an apron 120 and a leveler 130. The "working unit 100", "apron 120" and "leveler 130" may be referred to as "first working unit", "first cover member" and "first leveling member", respectively.

The shield cover 110 and the apron 120 are connected via a connecting portion 122 as a rotation movement shaft (rotation shaft). The apron 120 and the leveler 130 are connected with the connecting portion 132 as a rotation axis. The connecting portion 122 and the connecting portion 132 have a hinge-shaped hinge. That is, the connecting portion 122 and the connecting portion 132 have a cylindrical member fixed to one member and a columnar member penetrating the cylindrical member and fixed to the other member.

The apron 120 is provided behind the tilling rotor portion 600 for rotating the plurality of tilling claws 610 (see FIG. 2). The apron 120 suppresses the release of scattered matter (mud, etc.) scattered by the work of the tilling rotor unit 600 to the outside. The leveler 130 flattens the undulating field caused by the work of the tiller rotor portion 600. The "cultivating rotor unit 600" may be referred to as a "cultivating rotor unit".

The extension work unit 200 is connected to the work unit 100. The working machine 10 of the present embodiment can switch between a stored state and a working state depending on the arrangement of the extended working unit 200. Here, the "stored state" is a state in which the width of the working machine 10 is reduced in a direction orthogonal to the traveling direction of the traveling machine body 20. Specifically, the state in which the extension work unit 200 is rotated with respect to the work unit 100 and is folded is referred to as a stored state. The "working state" is a state in which the width of the working machine 10 is extended in a direction orthogonal to the traveling direction of the traveling machine body 20. Specifically, the state in which the extension work unit 200 rotates with respect to the work unit 100 from the stored state and is expanded is referred to as a work state. The "extension work unit 200" may be referred to as a "second work unit".

The extension working unit 200 has an extension shield cover 210, an extension apron 220 and an extension leveler 230 like the work unit 100. The extension shield cover 210 is provided above the tiller rotor provided corresponding to the extension work portion 200 of the tiller rotor portion 600. The "extended apron 220" and "extended leveler 230" may be referred to as a "second cover member" and a "second leveling member", respectively.

The extension apron 220 is provided behind the tilling rotor of the extension work portion 200, and is rotatably connected to the extension shield cover 210 with the connection portion 222 as an axis. The extension leveler 230 is provided behind the tilling rotor of the extension work portion 200, and is rotatably connected to the extension apron 220 with the connection portion 232 as an axis. The extended apron 220 works in conjunction with the apron 120 to prevent the scattered matter scattered by the work of the tilling rotor unit 600 from being released to the outside. The extended leveler 230 works in conjunction with the leveler 130 to level the undulating field caused by the work of the tiller rotor 600. The leveler 130 and the extended leveler 230 are connected by a connecting portion 400.

The switching unit 300 has a control cylinder 310 and a connection unit 320, and by rotating the extension work unit 200 with respect to the work unit 100, the storage state and the work state of the above-mentioned work machine 10 are switched. One end of the control cylinder 310 is rotatably connected to the connection portion 311 fixed to the work portion 100, and the other end is rotatably connected to the connection portion 312 fixed to the extension work portion 200. The extension working unit 200 is folded by the contraction of the control cylinder 310 and switched to the stored state, and is expanded and switched to the working state by the expansion of the control cylinder 310.

The connecting portion 400 is attached to the leveler 130 of the working portion 100 and the extension leveler 230 of the extension working portion 200. In the working state shown in FIG. 1, the connecting portion 400 connects the leveler 130 and the extended leveler 230. The connecting portion 400 has a first locking member 410 and a first receiving member 420, and the leveler 130 and the extension leveler 230 are connected by the first locking member 410 entering the first receiving member 420. The connecting portion 400 regulates the relative operating range of the leveler 130 and the extended leveler 230 in the working state. Further, in a state where the first locking member 410 is detached from the first receiving member 420, the connecting portion 400 restricts the rotation of the extension leveler 230 with respect to the extension apron 220. That is, even in a state other than the working state, the rotation of the extension leveler 230 with respect to the extension apron 220 is restricted by the connecting portion 400.

The leveler control unit 500 is connected to the shield cover 110 and the leveler 130, and adjusts the position and angle of the leveler 130 with respect to the shield cover 110. The leveler control unit 500 controls the height and angle of the leveler 130 with respect to the ground (horizontal plane).

A leveler extension 510 is provided at the outer end of the extension leveler 230. The leveler extension 510 further expands the width that can be leveled. The leveler extension 510 is rotatably connected to the extension leveler 230. The extension direction (longitudinal direction) of the leveler extension portion 510 is inclined toward the traveling machine body 20 with respect to the extension direction of the leveler 130 and the extension leveler 230.

A soil gathering plate 520 is provided on the traveling machine side of the shield cover 110. The soil gathering plate 520 is attached so as to be slidable in a direction orthogonal to the traveling direction of the traveling machine body 20. The soil gathering plate 520 is installed in alignment with the position of the wheel 20a of the traveling machine body 20 when the working machine 10 is used, and alleviates a step (undulations caused by the soil extruded by the wheel 20a) due to the wheel trace (rut). ..

In the present embodiment, a vehicle body such as a tractor is assumed as the traveling machine body 20, and tires are assumed as the traveling means, but the present invention is not limited to this. For example, the traveling machine body 20 may be provided with a crawler as a traveling means.

As shown in FIG. 2, the tilling rotor unit 600 has a plurality of tilling claws 610 and a power unit 620. The rotating shaft 630 (see FIG. 3) to which a plurality of tilling claws 610 are attached is rotated by the power supplied from the power unit 620. As a result, the plurality of tilling claws 610 rotate and act on the field to cultivate or stir the field. In FIG. 2, the range in which the tillage claw 610 rotates is shown by a dotted line as the rotation range 612.

[Structure of tiller rotor part]
Next, a specific configuration of the tilling rotor portion 600 included in the working machine 10 according to the present embodiment will be described. FIG. 3 is a diagram showing a configuration of a tilling rotor unit 600 of a working machine according to an embodiment of the present invention. Specifically, an example is shown in the case where the configuration of the portion of the tilling rotor portion 600 corresponding to the working portion 100 is viewed from the rear side. For convenience of explanation, a fixing member such as a holder or a flange for attaching the tillage claw 610 to the rotary shaft 630 is not shown.

In FIG. 3, the rotating shaft 630 is rotatably supported by the working unit 100 and extends in the left-right direction (width direction) of the working machine 10. The plurality of tilling claws 610 are attached to a predetermined mounting portion of the rotating shaft 630 by using a fixing member such as a holder or a flange (not shown). Although only two tillage claws are shown in FIG. 3 for one mounting portion, four tillage claws are actually attached. However, the number of tillage claws to be attached is not limited to four.

The plurality of tilling claws 610 arranged in the tilling rotor portion 600 of the present embodiment are roughly classified into two types of tilling claws. One of the two types of tillage claws is a tillage claw for soil gathering, and the other is a tillage claw for puddling. The cultivated claw for soil gathering is a cultivated claw having a shape suitable for the action of pulling the soil in a predetermined direction. As the cultivating claw for soil gathering, for example, the cultivating claw for soil gathering described in JP-A-2012-2000179 and JP-A-2016-208869 can be used. Further, the cultivated claw for puddling is a cultivated claw having a shape suitable for actions such as crushing soil and plowing straw into the soil. As the cultivated claw for puddling, for example, the cultivated claw for puddling described in Japanese Patent Application Laid-Open No. 2015-142520 can be used.

For convenience of explanation, in the following description, the shape of the tilling claw for soil gathering may be referred to as "first shape", and the shape of the tilling claw for puddling may be referred to as "second shape". Further, generally, the tillage claw is composed of a mounting base portion, a vertical blade portion and a horizontal blade portion, but since the tillage claw having such a configuration is known, detailed description thereof is omitted here.

Here, in the present embodiment, the direction D1 and the direction D2 are defined with the center 632 of the rotating shaft 630 as a boundary. The direction D1 is a direction along the rotation shaft 630 from the axial center 632 of the rotation shaft 630 toward the axial end portion 634 of the rotation shaft 630. The direction D2 is a direction opposite to the direction D1. However, the "center" here does not mean the center of the rotation axis 630 in a strict sense, but includes a range that can be regarded as substantially the center. That is, the direction D1 and the direction D2 only indicate whether the direction is relatively toward the end portion 634 of the rotation shaft 630 or the direction toward the vicinity of the center.

According to the above definition, in FIG. 3, the first tillage claw 610a is a tillage claw having a first shape in which the lateral blade portion is curved in the direction D1. The second tillage claw 610b is a tillage claw having a first shape in which the lateral blade portion is curved in the direction D2. That is, the first tillage claw 610a and the second tillage claw 610b are tillage claws for soil gathering in which the bending directions of the lateral blade portions are opposite to each other.

Further, the third tillage claw 610c is a tillage claw having a second shape in which the lateral blade portion is curved in the direction D1. The fourth tillage claw 610d is a tillage claw having a second shape in which the lateral blade portion is curved in the direction D2. That is, the third tillage claw 610c and the fourth tillage claw 610d are tillage claws for puddling in which the bending directions of the lateral blade portions are opposite to each other.

These first tillage claws 610a, second tillage claws 610b, third tillage claws 610c and fourth tillage claws 610d are fixed to predetermined positions of the rotary shaft 630 by a holder, a flange or the like.

Specifically, as shown in FIG. 3, at least the first tillage claw 610a and the second tillage claw 610b are attached to the first attachment portion 3a. At least the first tillage claw 610a and the third tillage claw 610c are attached to the second attachment portion 3b adjacent to the first attachment portion 3a in the first direction (direction D1). The third tillage claw 610c and the fourth tillage claw 610d are attached to the third attachment portion 3c adjacent to the first attachment portion 3a in the second direction (direction D2). A third tillage claw 610c and a fourth tillage claw 610d are attached to the fourth attachment portion 3d adjacent to the second attachment portion 3b in the first direction.

Although FIG. 3 shows a state in which a plurality of tillage claws 610 are arranged in a row, the present invention is not limited to this, and the rotary shaft 630 may be spirally arranged from one side in the axial direction to the other side. It is possible.

Here, an example of arranging the tillage claws in each mounting portion will be described with reference to FIG. As shown in FIG. 4A, the first tillage claw 610a and the second tillage claw 610b are arranged at positions facing each other in the first mounting portion 3a. Further, in the first mounting portion 3a, the third tillage claw 610c and the fourth tillage claw 610d are further arranged at positions facing each other. The "position facing each other" means a position in which the phase is shifted in the circumferential direction of the rotating shaft 630 within a range of 160 degrees or more and 200 degrees or less (typically 180 degrees). However, the positional relationship when arranging the tillage claws is not limited to the positions facing each other. For example, when three tillage claws are arranged in one mounting portion, the adjacent tillage claws are shifted in phase in the circumferential direction of the rotation axis 630 within a range of 100 degrees or more and 140 degrees or less (typically 120 degrees). It may be in position.

Further, as shown in FIG. 4B, the first tillage claw 610a and the third tillage claw 610c are arranged at positions facing each other in the second mounting portion 3b. In addition, in the second mounting portion 3b, the third tillage claw 610c and the fourth tillage claw 610d are arranged at positions facing each other.

Further, as shown in FIG. 4C, the third mounting claw 610c and the fourth tilling claw 610d are arranged at positions facing each other in the third mounting portion 3c and the fourth mounting portion 3d. Actually, two sets of a combination of the third tillage claw 610c and the fourth tillage claw 610d arranged so as to face each other are attached to the third mounting portion 3c and the fourth mounting portion 3d. Such a method of attaching a tillage claw is known as a general method of attaching a puddling claw. As shown in FIG. 3, most of the mounting portions of the rotating shaft 630 in the working machine 10 of the present embodiment have the same configuration as the third mounting portion 3c and the fourth mounting portion 3d.

In the work machine 10 according to the present embodiment, the combination of the first tillage claw 610a and the second tillage claw 610b is arranged according to the portion where the amount of soil generated by the passage of the wheel 20a of the traveling machine 20 has increased. The first mounting portion 3a and the second mounting portion 3b in which the combination of the first tilling claw 610a and the third tilling claw 610c is arranged are arranged. This point will be described in detail with reference to FIG.

FIG. 5 is a diagram showing the positional relationship between the tillage claw 610 in the working machine 10 according to the embodiment of the present invention and the passing trace 30a (hereinafter referred to as “wheel passing trace 30a”) of the wheel 20a of the traveling machine body 20. Specifically, the positional relationship between the tillage claw 610 and the wheel passage trace 30a formed inside the wheel 20a on the left side in the traveling direction of the traveling machine 20 (direction D2 side) will be described. The details of the elements using the same reference numerals as those in FIG. 3 are as described above.

In FIG. 5, when the traveling machine 20 (see FIG. 1) travels in the field, the mud 30 in the field is pushed out from the wheel passage trace 30a, and the portion where the amount of soil increases (hereinafter referred to as “soil amount increasing portion 32”) Occurs. In the present embodiment, the tiller rotor portion 600 is designed so that the above-mentioned first mounting portion 3a is arranged at the position where the soil volume increasing portion 32 is generated. That is, the combination of the first tillage claw 610a and the second tillage claw 610b is arranged according to the position of the soil volume increasing portion 32. Further, the second mounting portion 3b adjacent to the first mounting portion 3a is also arranged according to the position of the soil volume increasing portion 32.

As a result, a part of the soil volume increasing portion 32 on the direction D2 side is formed by the first tilling claw 610a, the second tilling claw 610b, the third tilling claw 610c and the fourth tilling claw 610d arranged in the first mounting portion 3a. It is cut down. At this time, a part of the chopped soil is thrown toward the wheel passage trace 30a by the action of the first tillage claw 610a. Further, a part of the other soil is discharged toward the center of the tilling rotor portion 600 (direction D2 side) by the action of the second tilling claw 610b. That is, of the soil volume increasing portion 32, the soil located in the region 32a shown in FIG. 5 is discharged toward the center of the tilling rotor portion 600 by the second tilling claw 610b.

Further, a part of the soil volume increasing portion 32 on the direction D1 side is cut off by the first tilling claw 610a, the third tilling claw 610c and the fourth tilling claw 610d arranged in the second mounting portion 3b. At this time, a part of the chopped soil is thrown toward the wheel passage trace 30a by the action of the first tillage claw 610a.

As described above, in the present embodiment, by arranging the first mounting portion 3a and the second mounting portion 3b according to the position of the soil volume increasing portion 32, most of the soil of the soil volume increasing portion 32 is passed through the wheels. At the same time as returning toward 30a, a part of the soil of the soil volume increasing portion 32 can be discharged near the center of the tilling rotor portion 600.

According to the findings of the present inventors, when all the soil extruded by the wheel 20a is returned to the wheel passage trace 30a, the amount of soil in the field becomes uneven in the left-right direction (width direction) of the tiller rotor portion 600. Cheap. In particular, in the vicinity of the center of the tilling rotor portion 600 (that is, between the left and right wheels 20a of the traveling machine body 20), the amount of soil tends to decrease.

However, the working machine 10 of the present embodiment has a configuration in which the undulations caused by the passage of the wheel 20a, that is, a part of the soil volume increasing portion 32 is intentionally released near the center of the tilling rotor portion 600. Further, by cutting down the soil volume increasing portion 32, inflow stirring of water in the field occurs and the soil volume near the center of the tilling rotor portion 600 is made uniform. Furthermore, since the ratio of water to soil is improved by making the amount of soil uniform, there is an advantage that the soil crushability is also made uniform.

As described above, the working machine 10 can suppress the decrease in the amount of soil near the center of the tilling rotor portion 600 while erasing the wheel passing trace 30a accompanying the passing of the traveling machine body 20, and can realize a uniform finish in the field. ..

Although not shown in FIG. 5, the soil amount increasing portion 32 is similarly formed on the inside of the wheel 20a on the right side (direction D1 side) of the traveling machine body 20 in the traveling direction. Therefore, as shown in FIG. 3, the working machine 10 of the present embodiment is provided with the first mounting portion 3a and the second mounting portion 3b at two locations with the axial center of the rotating shaft 630 interposed therebetween. Specifically, the first mounting portion 3a and the second mounting portion 3b are closer to the axial center of the rotating shaft 630 than the wheel passing trace 30a in the traveling machine body 20 (more specifically, in the wheel passing trace 30a). It is located on the edge of the rotating shaft 630 near the center in the axial direction).

Generally, the distance between the left and right wheels 20a (distance between the inner side surfaces of the wheels 20a) in the traveling machine body 20 is within the range of about 700 to 1400 mm. That is, the distance from the vicinity of the center of the traveling machine body 20 to the inner side surface of the wheel 20a is in the range of about 350 to 700 mm. At this time, considering that the position near the center of the traveling machine 20 and the position near the center of the working machine 10 (that is, near the center of the tiller rotor portion 600) are substantially the same, the first mounting portion 3a and the second mounting portion 3a and the second mounting portion It can be said that the position of 3b is preferably in the range of 300 mm or more and 750 mm or less (preferably 350 mm or more and 700 mm or less) from the axial center 632 of the rotating shaft 630 according to the distance between the wheels 20a of the traveling machine body 20 to be used. .. As described above, it is preferable that the positions of the first mounting portion 3a and the second mounting portion 3b in the axial direction of the rotating shaft 630 are appropriately changed according to the distance between the wheels 20a.

Further, as shown in FIG. 3, in the working machine 10 of the present embodiment, a tilling claw for soil gathering is also arranged at the axial end portion 634 of the rotating shaft 630. Specifically, the first tillage claw 610a is arranged near the right end portion 634 in the traveling direction of the working machine 10, and the second tilling claw 610a is arranged near the left end portion 634 in the traveling direction of the working machine 10. Tillage claws 610b are arranged. In this way, if a tillage claw for soil gathering is provided corresponding to the soil volume increasing portion formed on the outside (direction D1 side) of the wheel passage trace 30a, the wheel passage trace 30a can be erased more efficiently. It is possible to achieve a uniform finish in the field. However, the cultivated claws for soil gathering arranged outside the wheel passage trace 30a are not indispensable, and the cultivated claws for normal scraping can be used instead.

<Second Embodiment>
In the first embodiment, the first tillage claw 610a and the second tillage claw 610b are arranged at positions facing each other with respect to the first mounting portion 3a of the rotary shaft 630, and the third tillage claw 610c and the fourth tillage claw 610c are arranged. An example is shown in which the claws 610d are arranged at positions facing each other. In this embodiment, an example in which a plurality of tilling claws are attached to the first mounting portion 3a in a mode different from that of the first embodiment is shown.

FIG. 6 shows an example of arranging the tilling claws of the first mounting portion 3a in the working machine 10 of the second embodiment. In FIG. 6, two first tillage claws 610a and two second tillage claws 610b are combined. Specifically, the first tillage claw 610a and the second tillage claw 610b are arranged at positions facing each other with respect to the first mounting portion 3a, and two sets of such tillage claws are arranged. ing.

In the present embodiment, since all the tilling claws arranged in the first mounting portion 3a are the tilling claws for soil gathering, the action of pulling the soil is stronger than that of the first embodiment. That is, the amount of soil that can be returned to the wheel passage trace 30a shown in FIG. 5 increases, and the amount of soil that releases a part of the soil amount increasing portion 32 to the vicinity of the center of the tiller rotor portion 600 also increases. As a result, when the soil volume increasing portion 32 becomes large, such as when the field is loose, the wheel passage trace 30a can be efficiently erased and a uniform finish of the field can be realized.

In the present embodiment, the two first tillage claws 610a and the two second tillage claws 610b are combined, but the present invention is not limited to this, and the combination of the tillage claws can be appropriately changed as needed. be. For example, when the amount of soil returned to the wheel passage trace 30a is large, a combination of three first tillage claws 610a and one second tillage claw 610b may be used. On the contrary, when it is desired to increase the amount of soil discharged near the center of the tilling rotor portion 600, it is possible to combine three second tilling claws 610b and one first tilling claw 610a.

<Third Embodiment>
In the first embodiment, as shown in FIG. 5, an example in which the first mounting portion 3a and the second mounting portion 3b of the rotating shaft 630 are arranged corresponding to the soil volume increasing portion 32 is shown. The arrangement of the first mounting portion 3a and the second mounting portion 3b is not limited to the example of FIG. 5, and can be appropriately changed according to the size, shape, and the like of the soil volume increasing portion 32.

FIG. 7 is a diagram showing an example of arrangement of tillage claws in the working machine 10 according to the third embodiment. In this embodiment, as shown in FIG. 7, two first mounting portions 3a are arranged side by side. That is, in the first embodiment, the first mounting portion 3a is newly added between the first mounting portion 3a and the third mounting portion 3c.

In the present embodiment, the arrangement of the tilling claws in the first mounting portion 3a has the same configuration as in FIG. 4 (A). Therefore, the tilling rotor portion 600 of the present embodiment has a portion in which three first tilling claws 610a are lined up and a portion in which two second tilling claws 610b are lined up. As a result, as compared with the first embodiment, the amount of soil that can be returned to the wheel passage trace 30a is increased, and the amount of soil that a part of the soil amount increasing portion 32 is discharged to the vicinity of the center of the tilling rotor portion 600 is also increased. ..

Further, since the two first mounting portions 3a are lined up, it is possible to act on the soil volume increasing portion 32 which has spread over a wider range than the first embodiment. That is, it can be said that the arrangement of the tillage claws of the present embodiment is an effective configuration when the soil volume increasing portion 32 spreads and exists in the D2 direction.

As described above, in the present embodiment, an example is shown in which the two first mounting portions 3a are provided with the tilling claws having the arrangement configuration shown in the first embodiment (FIG. 4A). , Not limited to this. For example, the tilling claws having the arrangement configuration shown in the second embodiment (FIG. 6) may be provided on the first mounting portion 3a, or the arrangement configuration of the first embodiment and the arrangement configuration of the second embodiment may be provided. It may be applied in combination.

Further, in the present embodiment, an example in which two first mounting portions 3a are arranged side by side is shown, but the present invention is not limited to this, and three or more first mounting portions 3a can be arranged side by side. Further, it is possible to increase the number of the second mounting portions 3b as needed.

As described above, in the present embodiment, by changing the arrangement configuration of the mounting portion according to the size and shape of the soil volume increasing portion 32, the wheel passage trace 30a can be efficiently erased and the field is uniformly finished. Can be realized.

Although the present invention has been described above with reference to the drawings, the present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit of the present invention.

3a ... 1st mounting part, 3b ... 2nd mounting part, 3c ... 3rd mounting part, 3d ... 4th mounting part, 10 ... working machine, 20 ... traveling machine body, 20a ... wheel, 30 ... mud, 30a ... wheel passing Trace, 32 ... Soil volume increase part, 32a ... Area, 100 ... Working part, 110 ... Shield cover, 120 ... Apron, 122, 132, 222, 232, 311, 312, 320 ... Connection part, 130 ... Leveler, 200 ... Extension work part, 210 ... extension shield cover, 220 ... extension apron, 230 ... extension leveler, 300 ... switching part, 310 ... control cylinder, 400 ... connection part, 410 ... first locking member, 420 ... first receiving member, 500 ... Leveler control unit, 510 ... Leveler expansion unit, 520 ... Soil pulling plate, 600 ... Tilling rotor unit, 610 ... Tilling claw, 610a ... 1st tilling claw, 610b ... 2nd tilling claw, 610c ... 3rd tilling claw, 610d ... 4th tillage claw, 612 ... Rotation range, 620 ... Power unit, 630 ... Rotation shaft, 632 ... Center, 634 ... End

Claims (10)

A working machine provided with a tilling rotor portion having a plurality of tilling claws arranged in the circumferential direction of the rotary shaft to each of the plurality of mounting portions arranged in the axial direction of the rotating shaft,
The plurality of tilling claws have a first-shaped first tilling claw in which the lateral blade portion is curved in the first direction along the rotation axis, and the lateral blade portion is curved in the second direction opposite to the first direction. The second cultivated claw of the first shape, the third cultivated claw of the second shape in which the lateral blade portion is curved in the first direction, and the second of the second shape in which the lateral blade portion is curved in the second direction. Including 4 tillage claws
Of the plurality of mounting portions, at least the first tilling claw and the second tilling claw are arranged in the first mounting portion, and in the second mounting portion adjacent to the first mounting portion in the first direction. , At least the first tillage claw and the third tillage claw are arranged .
A working machine in which the third tillage claw and the fourth tillage claw are arranged in the third attachment portion adjacent to the first attachment portion in the second direction. Wherein the fourth mounting portion adjacent to the second section in the first direction, the third cultivating claw and the fourth tilling claws are arranged, the working machine according to claim 1. The working machine according to claim 1 or 2 , wherein the third tillage claw and the fourth tillage claw are arranged at positions facing each other. A working machine provided with a tilling rotor portion having a plurality of tilling claws arranged in the circumferential direction of the rotating shaft for each of a plurality of mounting portions arranged in the axial direction of the rotating shaft.
The plurality of tilling claws have a first-shaped first tilling claw in which the lateral blade portion is curved in the first direction along the rotation axis, and the lateral blade portion is curved in the second direction opposite to the first direction. The second cultivated claw of the first shape and the third cultivated claw of the second shape in which the lateral blade portion is curved in the first direction are included.
Of the plurality of mounting portions, at least the first tilling claw and the second tilling claw are arranged in the first mounting portion, and in the second mounting portion adjacent to the first mounting portion in the first direction. , At least the first tillage claw and the third tillage claw are arranged.
The first tillage claw and the second tillage claw are tillage claws for soil gathering.
The third tilling claw is a tilling claw for puddling, work machine. A working machine provided with a tilling rotor portion having a plurality of tilling claws arranged in the circumferential direction of the rotating shaft for each of a plurality of mounting portions arranged in the axial direction of the rotating shaft.
The plurality of tillage claws have a first-shaped first tillage claw in which the lateral blade portion is curved in the first direction along the rotation axis, and the lateral blade portion is curved in the second direction opposite to the first direction. The second cultivated claw of the first shape and the third cultivated claw of the second shape in which the lateral blade portion is curved in the first direction are included.
Of the plurality of mounting portions, at least the first tilling claw and the second tilling claw are arranged in the first mounting portion, and in the second mounting portion adjacent to the first mounting portion in the first direction. , At least the first tillage claw and the third tillage claw are arranged.
The first section in plan view, the working machine is disposed at a position overlapping the soil amount increasing portion formed by the passage of the traveling means of the traveling machine body to be mounted, work machine. A working machine provided with a tilling rotor portion having a plurality of tilling claws arranged in the circumferential direction of the rotating shaft for each of a plurality of mounting portions arranged in the axial direction of the rotating shaft.
The plurality of tilling claws have a first-shaped first tilling claw in which the lateral blade portion is curved in the first direction along the rotation axis, and the lateral blade portion is curved in the second direction opposite to the first direction. The second cultivated claw of the first shape and the third cultivated claw of the second shape in which the lateral blade portion is curved in the first direction are included.
Of the plurality of mounting portions, at least the first tilling claw and the second tilling claw are arranged in the first mounting portion, and in the second mounting portion adjacent to the first mounting portion in the first direction. , At least the first tillage claw and the third tillage claw are arranged.
The first section is located closer to the axial center of the rotary shaft than the pass mark of traveling means in the running body, wherein the working machine is installed, work machine. In the first mounting portion, the first tillage claw and the second tillage claw are arranged at positions facing each other.
The working machine according to any one of claims 1 to 6, wherein the first tilling claw and the third tilling claw are arranged at positions facing each other in the second mounting portion. The working machine according to any one of claims 1 to 7 , wherein the first direction is a direction from the axial center of the rotating shaft toward the axial end of the rotating shaft. The working machine according to any one of claims 1 to 8 , wherein the first mounting portion is located within a range of 300 mm or more and 750 mm or less from the axial center of the rotating shaft. The working machine according to any one of claims 1 to 9 , wherein the first mounting portion and the second mounting portion are provided at two locations with the axial center of the rotating shaft interposed therebetween.

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