JP6978757B2 - Agricultural work machine - Google Patents

Description

The present invention is provided on a working machine main body that performs a predetermined work, a central ground leveling plate rotatably provided on the rear portion of the working machine main body, and a rotatably provided on the left-right end portion of the working machine main body. The present invention relates to an agricultural work machine (cultivator, puddling machine, etc.) provided with an extension work body and a rotation drive unit for rotating the extension work body.

Working machines such as cultivators and puddlers have a working rotor that cultivates or agitates the soil by rotating the working claws. In addition, a work machine having a work rotor has a ground leveling member (for example, a leveler) behind the work rotor in order to level the soil roughened by the work claws.

Japanese Unexamined Patent Publication No. 2015-0437339

An object of the present invention is to provide an agricultural work machine having excellent soil leveling ability.

According to one embodiment of the present invention, there is a first leveling member (for example, an apron) and a second leveling member (for example, a leveler) rotatably connected to the first leveling member. The 2 leveling member has a main body portion and a curved extension curved portion located on the side of the first leveling member, and the second leveling member can rotate around the center of curvature of the extension curved portion. Provided.

The second leveling member has a main body portion and a curved extension curved portion located on the side of the first leveling member, and the second leveling member can rotate around the center of curvature of the extension curved portion. Even if the cultivation depth changes and the leveler rotates, the distance between the leveler and the apron becomes constant. By making the distance between the apron and the leveler constant regardless of the rotation angle of the leveler, the amount of water flowing through the gap between the apron and the leveler becomes constant regardless of the rotation angle of the leveler, and the finish performance of the puddling, that is, the soil. It has an effect when the leveling ability becomes constant.

In one embodiment of the present invention, even if the first leveling member has a curved portion at the end on the second ground leveling member side and the radius of curvature of the extended curved portion is equal to the radius of curvature of the curved portion. good.

According to the agricultural work machine according to the present invention, it is possible to provide an agricultural work machine having an excellent soil leveling ability.

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 partial cross-sectional view of the side surface which shows the connection structure of the 1st leveling member and the 2nd leveling member of the working machine which concerns on one Embodiment of this invention. It is a schematic diagram which shows the extended bending part which concerns on one Embodiment of this invention. It is a schematic diagram which shows the extended bending part which concerns on one Embodiment of this invention. It is a schematic diagram (cross-sectional view) which shows the connection structure of the 1st leveling member and the 2nd leveling member of a conventional working machine.

Hereinafter, the working machine according to 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 construed as being limited to the description of the embodiments 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" and "lower" will be used for explanation, but the upper or lower indicates the direction of the working machine in the working state, respectively. Similarly, although the description will be made using the terms front and rear, the front indicates the direction of the traveling machine that pulls the working machine with respect to the working machine, and the rear indicates the direction of the working machine with respect to the traveling machine.

[Problems of the Invention Found by the Inventors]
First, the problems of the present invention found by the present inventors will be described. Referring to FIG. 1, in the scraper, the working unit 100 (first working unit) has a shield cover 110, an apron 120 (first leveling member) and a leveler 130 (second leveling member), and the leveler 130 is an apron. It is rotatable with respect to 120. The leveler 130 prepares the rough soil by the work of the rotor portion 600 (see FIG. 2). Therefore, when the soil is leveled, the leveler 130 is configured to rotate so as to be parallel to the soil surface even when the plowing depth changes and the inclination of the apron 120 with respect to the soil surface changes. ing.

The present inventors first found that the distance d between the apron 120 and the leveler 130 was conventionally changed by changing the plowing depth and rotating the leveler 130 with respect to the apron 120 (FIG. 6). ). FIG. 6 is a drawing in which the case where the plowing depth is deep (upper side) and the case where the plowing depth is shallow (lower side) are superimposed on the same drawing for comparison. In FIG. 6, the distance d between the apron 120 and the leveler 130 is different, that is, the distance d1 (when the plowing depth is deep) and the distance d2 (when the plowing depth is shallow) according to the rotation angle of the leveler 130. I understand. This is because the center of rotation of the leveler 130 is not the end of the leveler 130, and when the leveler 130 rotates, the shortest distance between the apron 120 and the leveler 130 changes.

Subsequently, the present inventors have described that the amount of water flowing through the gap between the apron and the leveler changes according to the rotation angle of the leveler due to the fact that the distance between the apron and the leveler is not constant, and that the gap between the apron and the leveler is changed. It was discovered in sequence that the finishing performance of puddling, that is, the soil leveling ability, became unstable due to changes in the amount of flowing water.

[Embodiment]
The overall configuration of the working machine and each functional part of the working machine according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. The working machine according to the first embodiment of the present invention is used as a working machine such as a cultivator or a puddling machine, which is connected to the rear part of a traveling machine such as a tractor and cultivates or stirs soil by rotating a working claw. be able to. Further, the work machine according to the first embodiment has a stored state in which the width of the work machine is narrowed by folding a part of the work machine and a work in which the width of the work machine is widened by unfolding a part of the work machine. It can be used for a work machine that can switch between the state and the state. In the embodiment, the features of the present invention will be described using a puddling machine as an example of the working machine, but the working machine according to the present invention may be a cultivator and is applied to a working machine other than the cultivator and the puddling machine. You can also do it.

[Structure of working machine 10]
FIG. 1 is a top view showing the overall configuration of a working machine in a working state according to an embodiment of the present invention. Further, FIG. 2 is a side view showing the overall configuration of the working machine in the working state according to the embodiment of the present invention. As shown in FIGS. 1 and 2, the working machine 10 according to the first embodiment has a working unit 100, an extension working unit 200, a switching unit 300, a connecting unit 400, a leveler control unit 500, and a rotor unit 600.

The working unit 100 (first working unit) has a shield cover 110, an apron 120 (first leveling member), and a leveler 130 (second leveling member).

Here, the shield cover 110 and the apron 120 are connected with the connecting portion 122 as a rotation movement shaft (rotation shaft). Further, the apron 120 and the leveler 130 are rotatably connected by the connecting portion 132, and at that time, the apron 120 and the leveler 130 are rotatably connected with respect to the center of curvature of the extension curved portion 131 described later. The connecting portion 132 has a hinge-shaped hinge and is pivotally supported by the side plate of the apron 120 and the side plate of the leveler 130. That is, the connecting portion 132 has a cylindrical portion fixed to one member and a columnar portion penetrating the cylindrical portion and fixed to the other member. FIG. 3 shows how the connecting portion 132 is pivotally supported by the side plate of the apron 120 and the side plate of the leveler 130. The leveler 130 may be connected so as to be suspended from the apron 120 by the connecting member 135. 1 and 2 show the connecting member 135. The apron 120 suppresses the release of scattered matter such as soil scattered by the work of the rotor unit 600 to the outside. Further, the leveler 130 prepares the rough soil by the work of the rotor portion 600 (see FIG. 2).

The extension work unit 200 (second work unit) is connected to the work unit 100 so that the work machine 10 can switch between the stored state and the work state. Here, the stored state is a state in which the width of the working machine in the direction orthogonal to the traveling direction of the traveling machine is reduced. Specifically, the state in which the extension work unit 200 is folded by rotating with respect to the work unit 100 is referred to as a stored state. Further, the working state is a state in which the working machine is extended in a direction orthogonal to the traveling direction of the traveling machine. 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.

Further, the extension work unit 200 has an extension shield cover 210, an extension apron 220 (first leveling member) and an extension leveler 230 (second leveling member), similarly to the work unit 100. The extension shield cover 210 is provided above the second work rotor provided corresponding to the extension work portion 200 of the rotor portion 600 for rotating the work claw 610 (see FIG. 2). The extension apron 220 is provided behind the second working rotor 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 second working rotor and is rotatably connected to the extension apron 220 by a connecting portion 232, at which time the curvature of the extension bending portion (not shown) described later. It can rotate around the center. The extended apron 220 is interlocked with the apron 120, and suppresses the release of scattered substances such as soil scattered by the work of the rotor unit 600 to the outside. Further, the extended leveler 230 is interlocked with the leveler 130 to level the rough soil by the work of the rotor portion 600.

The switching unit 300 has a control cylinder 310 and a connecting unit 320, and by rotating the extension working unit 200 with respect to the working unit 100, the storage state and the working state are switched. One end of the control cylinder 310 is connected to the working portion 100, and the other end is rotatably connected to the connecting portion 312 fixed to the extension working 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 section 100 and the extension leveler 230 of the extension working section 200, and the apron 120 is attached in the rotation direction of the leveler 130 with respect to the apron 120 or the rotation direction of the extension leveler 230 with respect to the extension apron 220. And regulate the relative operating range of the extended apron 220. That is, the connecting portion 400 links the leveler 130 and the extended leveler 230. Further, the connecting portion 400 has a locking portion 410 attached to the extension leveler 230 and a receiving portion 420 attached to the leveler 130.

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 acts on the shield cover 110 and the leveler 130 so that the leveler 130 has a predetermined height or angle set with respect to the soil surface.

Here, as shown in FIG. 2, the rotor unit 600 has a working claw 610 and a power unit 620. The working claw 610 is rotated by the power unit 620 and acts on the soil to plow or agitate the soil. In FIG. 2, the range in which the work claw 610 rotates is shown as the rotation range 612.

Here, at the end of the extension leveler 230, a leveler expansion portion 510 that can further widen the width that can be leveled is provided. The leveler extension 510 is rotatably connected to the extension leveler 230. Further, the leveler expansion portion 510 extends (has a longitudinal direction) in a direction inclined with respect to the extension direction of the leveler 130 and the extension leveler 230.

Further, 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. When the work machine 10 is used, the soil gathering plate 520 is installed in accordance with the positions of the wheels and the like of the traveling machine to alleviate the step caused by the rut.

[Composition of apron 120 and leveler 130]
The configuration of the apron 120 and the leveler 130 will be described in detail with reference to FIG.

FIG. 3 is a schematic view (cross-sectional view) for showing the leveler 130 and the apron 120 of the working machine according to the embodiment of the present invention and explaining the connecting structure thereof. Since the cross-sectional structure of the extended leveler 230 and the extended apron 220 is the same as that of the leveler 130 and the apron 120, they are omitted in FIG.

As shown in FIG. 4, in the present invention, the leveler 130 has a main body portion 133 and an arc-shaped extended curved portion 131 (each shown by a dotted line in FIG. 4). The extended curved portion 131 is curved and has a predetermined curvature. The extended curved portion 131 is provided at the end of the leveler 130 on the apron 120 side. Similarly, an arc-shaped extended curved portion can be provided at the end of the extended leveler 230 on the extended apron 220 side (not shown). The leveler 130 is configured to be rotatable around the center of curvature of the extension curved portion 131, not the end of the main body portion 133 of the leveler 130 on the apron 120 side. The extended curved portion 131 may have a shape (for example, an ellipse or the like) in which the curvature gradually changes.

In the present invention, the extension curved portion 131 is provided on the leveler 130 so that the extension curved portion 131 can rotate with the center of curvature as the center of rotation, so that the plowing depth changes and the rotation angle of the leveler 130 changes. However, the distance d between the leveler 130 and the apron 120 is a constant value d3. FIG. 5 shows this, FIG. 5 (a) is a diagram when the plowing depth is deep, and FIG. 5 (b) is a diagram when the plowing depth is shallow. Looking at the enlarged view (the part surrounded by the dotted line) so that the distance d between the leveler 130 and the apron 120 can be seen in FIGS. 5 (a) and 5 (b), both distances d are constant values. It can be seen that it is d3.

With the above configuration, the distance d between the apron 120 and the leveler 130 is constant regardless of the rotation angle of the leveler 130, so that the apron 120 and the leveler 130 flow through the gap regardless of the rotation angle of the leveler 130. It has the function that the amount of water becomes constant and the finishing performance of puddling, that is, the soil leveling ability becomes constant.

The mechanism described above has the function of stabilizing the water flow. Since it is the extended curved portion 131 of the leveler 130 that contributes to such a function, the extended curved portion 131 is an essential configuration of the present invention. From the viewpoint of making the water flow more constant, a second curved portion 121 (curved portion) may be further provided at the end portion of the apron 120 on the leveler 130 side.

The radius of curvature of the second curved portion 121 of the apron 120 is preferably the same value as the radius of curvature of the extended curved portion 131 of the leveler 130. When the extended curved portion 131 of the leveler 130 has a shape in which the radius of curvature gradually changes (for example, an ellipse), the second curved portion 121 of the apron 120 also has a shape in which the radius of curvature gradually changes (for example, an ellipse). It is desirable that the change in the radius of curvature in the extended curved portion 131 of the leveler 130 is equal to the change in the radius of curvature in the second curved portion 121 of the apron 120.

The present invention is not limited to the above embodiment, and the soil leveling ability is improved by providing an extended curved portion at the end of the apron on the apron side to stabilize the water flow in the gap between the apron and the leveler. It is possible to appropriately change and apply it to other agricultural work machines as long as it does not deviate from the gist of the present invention.

10 working machine, 100 working part, 110 shield cover, 120 apron, 121 second curved part (curved part), 122 connecting part, 130 leveler, 131 extended curved part, 132 connecting part, 133 main body part, 135 connecting member, 200 Extension work part, 210 extension shield cover, 220 extension apron, 222 connection part, 230 extension leveler, 232 connection part, 310 control cylinder, 312 connection part, 320 connection part, 400 connection part, 410 locking part, 500 leveler control part , 510 Leveler Expansion, 600 Rotor, 610 Work Claw, 612 Rotation Range, 620 Power, d Distance

Claims (4)

A farming machine that is connected to the rear of the traveling machine and cultivates or agitates the soil.
It has a first leveling member and a second leveling member rotatably connected to the first leveling member.
The second leveling member has a main body portion and a curved extension curved portion located on the side of the first leveling member.
The extended curved portion extends in a direction orthogonal to the traveling direction of the traveling machine.
The second leveling member can rotate around the center of curvature of the extended curved portion.
Agricultural work machine. The agricultural work machine according to claim 1, wherein the distance between the first leveling member and the extended curved portion is constant regardless of the rotation of the second leveling member. Before SL extending curved portion, Ru part der member in contact with the surface of the soil of the second ground leveling member, agricultural machine as claimed in claim 1 or 2. The first leveling member has a curved portion at an end on the side of the second leveling member.
The agricultural work machine according to any one of claims 1 to 3, wherein the radius of curvature of the extended curved portion and the radius of curvature of the curved portion are equal to each other.

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