Grooving device

Abstract

To provide a ditching device that can efficiently and reliably discharge soil excavated by ditching to the outside of the ditch. [Solution] The ditching device consists of a traveling device connecting means that can be connected to a traveling device, and a ditching tool connected to the traveling device connecting means. The ditching tool includes a ditching section having a curved lifting surface that lifts soil upward, a flat section formed at the upper end of the ditching section onto which the soil lifted by the lifting surface rests, and a soil guiding section provided on the flat section that discharges the soil lifted from the ditching section to the outside of the groove formed in the soil.

Description

Technical Field

[0001] The present invention relates to a grooving device used for grooving work in farm fields, mainly paddy fields.

Background Art

[0002] Conventionally, as a grooving device used in paddy fields and the like, there is known a "field trencher characterized in that a mounting frame is connected to a traveling machine body by a connecting mechanism, a main body frame is provided on the mounting frame, a machine frame is provided on the main body frame, a grooving body capable of grooving the field surface is provided on the machine frame, a plow member capable of scooping up field soil at a position rearward in the traveling direction of the grooving body and discharging the soil laterally is provided on the machine frame, a moving mechanism for moving the machine frame in the left-right direction perpendicular to the traveling direction of the traveling machine body is provided between the mounting frame and the main body frame, and a pivot mechanism for connecting the machine frame to the traveling machine body so as to be horizontally rotatable is provided between the main body frame and the machine frame" (Patent Document 1).

[0003] However, such a field trencher cuts both ends with the grooving body, and scoops up the field soil with the plow member to discharge it laterally, so that although the field soil can be reliably discharged laterally, the structure is complicated and the cost is high, and moreover, since a plurality of movable members come into contact with the field soil, maintenance is complicated and cannot be performed easily.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of the above-mentioned conventional drawbacks, the present invention aims to provide a grooving device capable of efficiently and reliably discharging the soil generated by grooving to the outside of the groove.

Means for Solving the Problems

[0006] To achieve the above objective, the groove cutting device described in claim 1 of the present invention comprises a traveling device connecting means that can be connected to a traveling device, and a groove cutting tool connected to the traveling device connecting means, wherein the groove cutting tool comprises a groove cutting section having a curved lifting surface that lifts soil upward, a flat section formed at the upper end of the groove cutting section on which the soil lifted by the lifting surface rests, and a soil guiding section provided on the flat section that discharges the soil lifted from the groove cutting section to the outside of the groove formed in the soil. The soil guiding portion of the trenching device according to claim 2 is characterized in that its rear end protrudes outward from the side of the flat portion. The soil guiding section of the trenching device according to claim 3 is characterized in that it has an inclined surface onto which soil can be piled. The traveling device connecting means of the grooving device according to claim 4 is characterized in that the traveling device connecting means comprises a traveling device connecting member that can be connected to the traveling device, and a pair of shaft members, one end of which is connected to the traveling device connecting member so as to be rotatable in the horizontal direction, and the other end of which is connected to the grooving tool so as to be rotatable in the horizontal direction, wherein the pair of shaft members are formed to be substantially the same length and are connected to the traveling device connecting member and the grooving tool in a substantially parallel state. [Effects of the Invention]

[0007] As is clear from the above explanation, the present invention provides the following effects. (1) In the invention described in claim 1, the groove cutting tool is equipped with a groove cutting section and a soil guide section that discharges soil that rises up from the groove cutting section to the outside of the groove, so the structure can be simplified and costs can be reduced. (2) Since the groove cutting section, flat section, and soil guide section that come into contact with the soil are fixed in place, soil will not enter the movable parts, etc., and maintenance can be easily performed. (3) In the invention described in claim 2, the same effects as in (1) and (2) above can be obtained, and soil can be reliably discharged to the outside of the trench. (4) In the invention described in claim 3, the same effects as in (1) to (3) above can be obtained, and soil can be discharged more smoothly. (5) In the invention described in claim 4, the same effects as in (1) to (4) above can be obtained, and since a pair of shaft members formed to be substantially the same length are connected to the running device and the grooving tool in a substantially parallel state, the grooving tool and the running device are always connected at substantially the same angle, and grooves can be reliably formed parallel to the direction of travel. [Brief explanation of the drawing]

[0008] Figures 1 to 5 are explanatory diagrams showing a first embodiment of the present invention. [Figure 1] Front view of the grooving device according to the first embodiment. [Figure 2] A plan view of the grooving device according to the first embodiment. [Figure 3] Diagram illustrating the trenching section and soil guiding section. [Figure 4] An explanatory diagram showing the grooving tool rotated horizontally. [Figure 5] An explanatory diagram showing the ditching work in progress. [Modes for carrying out the invention]

[0009] The present invention will be described in detail below with reference to the embodiments for carrying out the invention shown in the drawings. The vertical direction refers to the vertical direction (up and down direction) based on the reference numerals in Figure 1, the front and back direction refers to the left and right direction (longitudinal direction of the shaft member) based on the reference numerals in Figure 1, and the left and right direction refers to the vertical direction (horizontal direction perpendicular to the longitudinal direction of the shaft member) based on the reference numerals in Figure 2. In the first embodiment for carrying out the present invention shown in Figures 1 to 5, 1 is a furrowing device that excavates soil 2a from the soil 2 of a field such as a paddy field or a cultivated field and forms drainage grooves 18 in the soil 2 (see Figure 5).

[0010] As shown in Figures 1 and 2, this furrowing device 1 mainly consists of a traveling device connecting means 3 that can be connected to a traveling device (not shown) such as a tractor or tiller, and a furrowing tool 4 connected to the traveling device connecting means 3.

[0011] The travel equipment mainly consists of combine harvesters, tractors, tillers, and heavy machinery capable of traveling in rice paddies and fields, and the furrowing device 1 of the present invention is attached to the rear side of these devices. In this embodiment, the travel device connection means 3 consists of a travel device connection member 5 that can be connected to the travel device, and a pair of shaft members 6, one end of which is connected to the travel device connection member 5 so as to be rotatable in the horizontal direction, and the other end of which is connected to the groove cutting tool 4 so as to be rotatable in the horizontal direction.

[0012] The travel device connecting member 5 consists of a base member 7, a plurality of connecting pieces 8 rotatably provided on one end (front side) of the base member 7, and a travel device side shaft member connecting portion 9 provided on the other end (rear side) of the base member 7.

[0013] In this embodiment, the connecting pieces 8 are provided near both ends and approximately in the center of the base member 7, and are formed to form a mechanism similar to a so-called three-point hitch. However, the traveling device connecting means 3 including the connecting pieces 8 is not limited to this shape, and any form that can be connected to a traveling device such as a tractor may be used. Each pair of shaft members 6 has one end pivotally connected to a pair of running device side shaft member connection parts 9 of the base member 7 so as to be rotatable horizontally (left and right), and the other end is pivotally connected to a grooving tool 4 so as to be rotatable horizontally (left and right). Referring to Figure 4, it should be added that the two elongated rod-shaped shaft members 6a and 6b each pivot at a pair of shaft member connection parts 9 on the running device side located on the left side of the drawing. As a result, the groove cutting section 12, which is composed of the groove cutting tool 4 and a roughly triangular trapezoidal soil guide section 14 integrally provided on the roughly flat surface of the groove cutting tool 4, is displaced in the left-right direction.

[0014] As shown in Figure 2, the traveling device-side shaft member connection portions 9 are formed as a pair on the rear end side of the base member 7, are flange-shaped portions protruding rearward and having through holes. A pivot pin or the like is inserted into each through hole to connect one end portion of the shaft member 6 so as to be rotatable in the horizontal direction. In the present embodiment, one shaft member 6a and the other shaft member 6b are formed in substantially the same shape, and are connected to the traveling device connection member 5 and the ditching tool 4 in a substantially parallel state. In the present embodiment, only one shaft member 6a is formed with a connection portion 6c that can be connected to the base member 7 via a hydraulic cylinder or the like, and portions other than this connection portion 6c are formed in the same shape. By operating the hydraulic cylinder connected to this connection portion 6c, the ditching tool 4 can be rotated in the horizontal direction. A connection portion 7a that can be connected to the connection portion 6c via the hydraulic cylinder 17 is formed at the rear portion of the base member 7 on the side of the one shaft member 6a.

[0015] As shown in Figures 1 to 3, the ditching tool 4 includes: a connection member 16 having ditching tool-side shaft member connection portions 10 to which the pair of shaft members 6a and 6b are respectively connected in a pivotally supported state so as to be rotatable in the horizontal direction; a ditching portion 12 having a curved raised surface 11 that pushes soil 2a upward; left and right flat portions 13 formed at the upper end of the ditching portion, on which the soil 2a raised from the soil 2 by the raised surface 11 rides; and substantially triangular trapezoidal soil guide portions 14 that are integrally provided on the flat portions and discharge the soil 2a raised from the ditching portion 14 to the outside of the groove 18 formed in the soil 2 (see Figure 3).

[0016] Here, "the outside of the groove" refers to a portion other than the inside of the groove 18 formed in the soil 2, particularly the outer side in the left-right direction (the up-down direction in plan view). That is, the soil 2a guided by the soil guide portions 14 does not enter the inside of the groove 18, and is discharged to other portions. For convenience of description, the soil in a field or the like is designated as soil 2, and the soil scraped out by the ditching tool 4 is designated as soil 2a.

[0017] The grooving part 12 is formed in a substantially triangular shape protruding downward when viewed in a state of directly facing the raised surface 11. By inserting this grooving part 12 into the soil 2 and pulling it forward by a traveling device or the like, the grooving part 12 forms an inverted triangular groove 18 for drainage in the soil 2 of a field or the like.

[0018] The raised surface 11 is formed in a curved surface shape that comes into contact with the soil 2 and raises the soil 2a upward during grooving, and this surface is a curved surface shaped such that the raised soil 2a rides onto the flat part 13. In the present embodiment, the raised surface 11 is formed in an arc shape with a radius of 600 mm. By adopting such a shape, the soil 2a can be efficiently raised upward.

[0019] The flat part 13 is a substantially horizontal portion formed at the upper end of the raised surface 11, and is formed in a substantially rectangular shape in plan view. After the soil 2a discharged by grooving is raised upward by the raised surface 11, it rides onto this flat part 13. When performing a normal grooving operation, the grooving part 12 may be inserted into the soil 2 such that the upper surface of the soil and the flat part 13 are at substantially the same height, or only a part of the grooving part 12 may be inserted into the soil for use. Even in such a case, since the raised surface 11 is formed in the curved surface shape as described above, the soil 2a can be efficiently raised up to the flat part 13. In the present embodiment, the soil guiding part 14 is formed in a substantially triangular shape in plan view, with its tip end positioned substantially on the same line as the upper end of the raised surface 11, and its rear end formed to protrude outward beyond the lateral side portions in the left-right direction of the flat part 13. Thereby, the soil 2a generated by grooving can be reliably discharged to the outside of the groove 18.

[0020] Further, in the present embodiment, the soil guiding part 14 is further provided with an inclined surface 5 on which the soil 2a rides. By providing such an inclined surface 15, the resistance when guiding the soil 2a can be reduced, and the soil 2a can be smoothly guided and discharged. Furthermore, the soil guide section 14 is not limited to a roughly triangular trapezoidal shape. Within the scope of the invention, it may have other three-dimensional shapes, such as those with a fan-shaped or parabolic upper surface, or those that are generally conical or truncated.

[0021] The connecting member 16 is fixed to the upper surface of the soil guide section and is equipped with a pair of groove-cutting tool side shaft member connecting parts 10. Similar to the running device side shaft member connecting part 9, this groove-cutting tool side shaft member connecting part 10 protrudes forward and is formed in a flange shape with a through hole. A pivot pin or the like is inserted into this through hole to connect the other end of the shaft member 6 so that it can rotate horizontally.

[0022] By forming a pair of shaft members 6a and 6b to be approximately the same length and connecting the traveling device connecting member 5 and the grooving tool 4 in a substantially parallel state, as shown in Figure 4, the grooving tool 4 and the traveling device are connected at approximately the same angle at all times, the raised surface 11 is always approximately perpendicular to the direction of travel, and grooves can be formed parallel to the direction of travel. In this embodiment, the pair of shaft members 6a and 6b are roughly prism-shaped or roughly rectangular pipe-shaped, but shaft members that are roughly cylindrical or roughly pipe-shaped may also be used.

[0023] When using the furrowing device 1 of the present invention, it is attached to a traveling device such as a tractor using the traveling device connection means 3, and the furrowing section 12 is inserted into the soil in the area where furrowing work is to be performed. Then, by moving forward, as shown in Figure 5, the soil 2a of the field or other soil 2 is lifted by the raised surface 11 of the furrowing section 12, and then the soil 2a rides up onto the flat section 13. The soil that rides up onto the flat section 13 is discharged to the outside of the furrow 18 by the soil guide section 14, and a drainage furrow 18 is formed. [Industrial applicability]

[0024] This invention is used in the industry that manufactures grooving devices. [Explanation of Symbols]

[0025] 1: Ditching device, 2: Soil (2a: Soil), 3: Traveling device connection means, 4: Grooving tool, 5: Traveling device connecting member, 6: Axle member, 7: Base member, 8: Connecting piece, 9: Connection part for the shaft member on the running gear side, 10: Connection part for the shaft member on the groove cutting tool side, 11: Raised surface, 12: Grooved section, 13: Flat area, 14: Soil induction area, 15: Inclined surface, 16: Connecting member, 17: Hydraulic cylinder, 18: Groove.

Claims

1. It consists of a traveling device connecting means that can be connected to a traveling device, and a grooving tool connected to the traveling device connecting means, The groove-cutting device is characterized by comprising: a groove-cutting section having a curved lifting surface that lifts soil upward; a flat section formed at the upper end of the groove-cutting section, on which the soil lifted by the lifting surface rests; and a soil guide section provided on the flat section that discharges the soil lifted from the groove-cutting section to the outside of the groove formed in the soil.

2. The groove-cutting device according to claim 1, characterized in that the rear end of the soil-guiding section protrudes outward from the side of the flat section.

3. The groove-cutting device according to claim 2, characterized in that the soil guide section has an inclined surface onto which soil accumulates.

4. The running device connecting means comprises a running device connecting member that can be connected to the running device, and a pair of shaft members, one end of which is connected to the running device connecting member so as to be rotatable in the horizontal direction, and the other end of which is connected to the grooving tool so as to be rotatable in the horizontal direction, wherein the pair of shaft members are formed to be substantially the same length and are connected to the running device connecting member and the grooving tool in a substantially parallel state, characterized in that the grooving device according to any one of claims 1 to 3.

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