JP2009219389A - Rotary-type weeding and harrowing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device enabling efficient weeding and harrowing operation. <P>SOLUTION: The rotary-type weeding and harrowing device 30 is equipped with weeding-harrowing wheels 36 which have nearly disk-shaped disks 36a, a plurality of first blades 36b radially attached to the outer peripheries of the disks at a prescribed interval, and a plurality of second blades 36c radially attached to the midways between the first blades. The first blade is fixed to the outer periphery of the disk so that the base terminal of a slightly bent slender plate may nearly coincide with the plane including the disk, and the second blade is fixed to the outer periphery of the disk so that the base terminal of the slender plate longer than the first blade and bent than the first blade may be tilted so as to form an acute angle with the plane including the disk. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates generally to weeding and crushing equipment. More particularly, the present invention relates to a rotary weeding and crushing device that enables efficient weeding and crushing operations.

  In principle, the action of crushing a clot is classified into five types: crushing, crushing, cutting, cutting, crushing (see Non-Patent Document 1), and various crushing devices based on such a principle are available. Traditionally provided. For example, a disk harrow, a flower rotor, a cage rotor, and the like are well known as the cutting blade rotating type.

  Also, when it rains after planting the field, etc., and then the weather suddenly recovers, the field becomes hard, but in such cases it prevents the crop from being seriously damaged, As a machine for promoting the growth of crops, a rotary soil crusher has been proposed (see Patent Document 1).

  Furthermore, the present inventor has also proposed a rotary type soil crushing apparatus capable of crushing soil on both sides of a crop (see Patent Document 2).

Japanese Patent Laid-Open No. 10-14317 JP 2006-211942 A Introduction to Agricultural Machinery (written by Hidenobu Shoji, Yokendo Co., Ltd., published on February 20, 1971, 12th edition, pages 161-170)

  The present invention is a further improvement and development of the device described in Patent Document 2, and an object thereof is to provide a rotary weeding and soil breaking device having a good weeding and soil breaking action.

  The rotary weeding attached to the tip of a shank extending horizontally in both directions or in one direction so as to be orthogonal to the center beam at a predetermined position of the center beam traveling along the center line of the furrow according to claim 1 And the ground breaking device includes a weeding and ground breaking wheel, the weeding and ground breaking wheel having a substantially disk-shaped disk, a plurality of first blades radially attached to the outer periphery of the disk at a predetermined interval, and an outer periphery of the disk A plurality of second blades mounted radially between the first blades, wherein the first blade has a base of the slightly curved elongated plate substantially coincident with a plane containing the disk. Each of the second blades is fixed to the outer periphery, and the second blade includes a disk having a base end of an elongated plate that is longer than the first blade and curved than the first blade. And it is characterized in that it is fixed to the outer periphery of the disk so as to be inclined at an acute angle to the plane.

  The rotary weeding and crushing apparatus according to claim 2 of the present application is characterized in that in the apparatus of claim 1, a corrugated protrusion or a sawtooth protrusion is provided on one edge of the second blade. Is.

  The rotary weeding and crushing device according to claim 3 of the present application further includes an L-shaped arm for rotatably supporting the weeding and crushing wheel in the device of claim 1 or 2, and via a bearing. The end of the short side of the arm to which the weeding / crushing wheel is attached is inclined at an acute angle with respect to the plane including the arm, so that the weeding / crushing wheel is attached with the disc inclined to the ground. It is characterized by that.

  The rotary weeding and crushing device according to claim 4 of the present application further includes a grounding force adjusting mechanism that adjusts a force pressing the weeding / crushing wheel against the ground in the device of claim 3, wherein the grounding force adjusting mechanism includes: The force acting on the weeding / crushing wheel is adjusted by changing the force of the spring applied to the end of the long side of the arm.

  ADVANTAGE OF THE INVENTION According to this invention, the operation | work which crushes the soil located between adjacent furrows, or removes weeds can be implemented efficiently. In the apparatus of the present invention, since the first blade enters the ground in a state of being inclined with respect to the ground surface, the weeding and crushing wheel can be rotated well, and the second blade is inclined with respect to the ground surface. Since it enters the ground in the state, the weeding and crushing efficiency becomes good. Since the apparatus of the present invention has a relatively simple structure, the manufacturing cost is low and the possibility of failure is low, so that the maintenance cost can be kept low.

  Next, referring to the attached drawings, a rotary weeding and ground breaking device according to a preferred embodiment of the present invention will be described in detail. FIG. 1 is a perspective view showing a cultivator 10 in which a rotary weeding and soil breaking device according to a preferred embodiment of the present invention is installed. A cultivator 10 shown in FIG. 1 has a toolbar 12 having a mast (not shown) connected to a hydraulic three-point support device of a tractor at the front.

  Two stringers 14 are bolted to the tool bar 12 via a clamp 16 at a predetermined interval. Each stringer 14 can be fixed at a desired position on the tool bar 12 by loosening a bolt and adjusting the position of the clamp 16. In FIG. 1, there are two stringers 14 attached to the toolbar 12, but the number of attachments may be increased or decreased if necessary.

  A center beam 18 is disposed below each stringer 14. One ends of swing links 20a and 20b are rotatably attached to the front end and the rear end of each stringer 14, respectively. The U-shaped frame provided at the front end and the center of each center beam 18 has a swing. The other ends of the links 20a and 20b are rotatably attached. Thus, a parallelogram link mechanism is formed by the vertical beam 14, the center beam 18, and the swing links 20a and 20b, and the center beam 18 can move up and down in parallel to the vertical beam 14. ing. A ruler wheel 24 is rotatably attached to the center beam 18 via a yoke 22. The structure of the above cultivator 10 is a well-known thing, and does not comprise the characteristic of this invention.

  The rotary weeding and crushing apparatus 30 according to a preferred embodiment of the present invention horizontally extends in both directions so as to be orthogonal to the center beam 18 at a predetermined position (the front end in the example of FIG. 1) of the center beam 18. The tip of the shank 26 is attached. In addition, the advancing direction of the tractor (therefore, rotary weeding and crushing device 30) is the front side in FIG.

  2 is a perspective view of the rotary weeding and crushing device 30 shown in a state where it is removed from the cultivator 10, and FIG. 3 is a three-view diagram (front view, side view, plan view) of the rotary weeding and crushing device 30. ). The rotary weeding and crushing device 30 includes a vertical member 32 (see FIG. 6) provided with a plurality of bolt holes 32a along the length direction, and a substantially L-shaped arm 34 (see FIG. 7). .

  The vertical member 32 and the arm 34 are connected to each other by passing the bolt B1 through a hole 34a provided at substantially the center of the long side of the arm 34 and a desired bolt hole 32a of the vertical member 32. An end 34 b of the short side of the arm 34 is inclined at an acute angle α with respect to a plane including the arm 34. α is preferably 30 ° to 60 °. In addition, it can be set as the stopper of the arm 34 by screwing the volt | bolt B2 in the hole 32b of the vertical material 32 (refer FIG. 2).

  The rotary weeding and crushing device 30 also includes a weeding and crushing wheel 36 that is rotatably attached to the end 34b of the short side of the arm 34. FIG. 4 is a three-sided view showing the weeding and crushing wheel 36. The weeding / crushing wheel 36 includes a substantially disk-shaped disk 36a, a plurality of (seven in FIG. 4) first blades 36b radially attached to the outer periphery of the disk 36a, and an outer periphery of the disk 36a. And a plurality of (seven in FIG. 4) second blades 36c radially attached between adjacent first blades 36b. Since the end 34b of the arm 34 to which the weeding / crushing wheel 36 is attached is inclined at an acute angle α as described above, the disk 36a of the weeding / crushing wheel 36 is inclined at an acute angle α with respect to the normal to the ground. (Therefore, the first blade 36b and the second blade 36c are also inclined correspondingly) (see FIG. 9A).

  The first blade 36b is for rotating the weeding / crushing wheel 36 by grounding its tip to the ground. Each of the first blades 36b is fixed by welding the base end of a slightly curved elongated plate to the outer periphery of the disk 36a. The first blade 36b is attached so that the central axis x (see FIG. 4C) of the plate substantially coincides with the plane including the disk 36a in order to easily rotate the weeding / crushing wheel 36 at the time of ground contact. preferable.

  The second blade 36c is for crushing soil or tearing grass roots by piercing the tip into the ground. Each of the second blades 36c is fixed by bending a plate longer than the first blade 36b more than the first blade 36b and welding between the mounting positions of the first blade 36b on the outer periphery of the disk 36a. The second blade 36c is inclined at an acute angle β with respect to the plane including the disk 36a so that the central axis y (see FIG. 4C) of the plate can efficiently perform weeding and crushed soil. It is attached as follows. As a result of various experiments by the present inventor, it was found that β is preferably selected from 20 ° to 40 °.

  Further, it is preferable to provide a corrugated protrusion 36c1 on one edge portion of the second blade 36c so that crushed soil and weeding can be performed more efficiently. Alternatively, instead of the corrugated protrusion 36c1, a sawtooth protrusion 36'c1 may be provided (see FIG. 5A). Alternatively, the corrugated protrusion 36c1 and the sawtooth protrusion 36'c1 need not be provided (see FIG. 5B).

  In addition, it is preferable to provide a recessed portion 36d at the attachment location on the outer periphery of the disk 36a so that the first blade 36b and the second blade 36c can be easily attached.

  As best shown in FIG. 2, the weeding / crushing wheel 36 is rotatably attached to the end 34 b of the arm 34 via a bearing 38.

  The rotary weeding and crushing device 30 also includes a grounding force adjusting mechanism 40 that adjusts the force for pressing the weeding / crushing wheel 36 against the ground. The grounding force adjustment mechanism 40 includes an inclined member 40a attached to the upper end of the vertical member 32, and a plurality of fasteners 40bi (i = 1, 2,...) Attached to the side surface of the inclined member 40a at a predetermined interval. n, n = 4 in the illustrated example), and a spring 40c for connecting the end 34c of the long side of the arm 34 and the predetermined fastener 40bi. And the force which presses the weeding and crushing wheel 36 against the ground can be adjusted by which one of the fasteners 40bi of the inclined member 40a is connected to the upper end of the spring 40c (for example, the upper end of the spring 40c is the lowermost step). Comparing the case where it is connected to the fastener 40b4 and the case where it is connected to the uppermost fastener 40b1, the latter case can increase the force for pressing the weeding / crushing wheel 36 against the ground). The inclined member 40a and the vertical member 32 are preferably formed integrally.

  The rotary weeding and crushing apparatus 30 further includes a fixture 42 for attaching the rotary weeding and crushing apparatus 30 to the shank 26. As best shown in FIG. 8, the fixture 42 has a rectangular parallelepiped shape as a whole, and is provided with a rectangular opening 42a for passing the shank 26 on one side and perpendicular to the other side. A rectangular opening 42c for passing the material 32 is provided. Bolts 42b and 42d for fixing the shank 26 and the vertical member 32 are disposed in the openings 42a and 42c, respectively.

  The operation of the rotary weeding and crushing device 30 configured as described above will be described. When the cultivator 10 is driven so that the center beam 18 moves along the center line of the intercostal space, the weeding and crushing wheel 36 enters the ground beside the intercostal space and tears the grass roots or breaks the soil. That is, when the cultivator 10 is run with one tip of the first blade 36b entering the ground (see FIG. 9 (a)), the weeding / crushing wheel 36 is rotated, and one of the adjacent first blades 36b is rotated. Two tips enter the ground. By repeating this, the weeding and crushing wheel 36 continues to rotate. On the other hand, the second blade 36c enters the ground one after another. However, since the second blade 36c is inclined with respect to the ground (see FIG. 9B), the second blade 36c is easy to enter the ground, and crushed soil and weeding are prevented. Done efficiently. In addition, by adjusting the grounding force adjusting mechanism 40 as desired, the force for pressing the weeding / crushing wheel 36 against the ground can be adjusted according to the hardness of the soil to be crushed.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, the length, width, shape, and the like of the first / second blades 36b and 36c illustrated in the above embodiment are merely illustrative and are not limited thereto. In the above embodiment, the rotary weeding and crushing device 30 is installed only in one direction of the center beam 18, but the rotary weeding and crushing device 30 may be installed in both directions of the center beam 18. .

It is the perspective view which showed the cultivator with which the rotary type weeding and the earth-crushing apparatus based on preferable embodiment of this invention was installed. It is a perspective view of the rotary weeding and soil breaking device shown in the state removed from the cultivator. 3 (a) is a front view of the rotary weeding and crushing apparatus of FIG. 2, FIG. 3 (b) is a side view of the rotary weeding and crushing apparatus of FIG. 2, and FIG. 3 (c) is the rotary weeding of FIG. FIG. 4 (a) is a perspective view of the weeding / crushing wheel of the apparatus of FIG. 2, FIG. 4 (b) is a side view of the weeding / crushing wheel, and FIG. 4 (c) is a front view of the weeding / crushing wheel. FIG. 5 (a) is a perspective view showing a modified form of the weeding / crushing wheel, and FIG. 5 (b) is a perspective view showing another modified form of the weeding / crushing wheel. 6A is a front view showing the vertical member and the inclined member of the apparatus of FIG. 2, and FIG. 6B is a perspective view showing the vertical member and the inclined member. It is the perspective view which showed the arm of the apparatus of FIG. FIG. 3 is a perspective view of a fixture of the apparatus of FIG. 2. FIG. 9A is a side view showing a state in which the weeding / crushing wheel has entered the ground, and FIG. 9B is a front view of FIG. 9A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cultivator 12 Toolbar 14 Stringer 16 Clamp 18 Center beam 20 Yoke 24 Ruler wheel 26 Shank 30 Rotary weeding and crushing device 32 Vertical material 34 Arm 36 Weeding and crushing wheel 36a Disk 36b 1st blade 36c 2nd blade 38 Bearing 40 Grounding force adjustment mechanism 42 Attachment

Claims (4)

A rotary weeding and soil breaking device attached to the tip of a shank that extends horizontally in both directions or in one direction so as to be orthogonal to the center beam at a predetermined position of the center beam that runs along the center line of the furrow,
With weeding and crushing wheel,
The weeding / crushing wheel has a substantially disc-shaped disk, a plurality of first blades radially attached to the outer periphery of the disk at a predetermined interval, and a plurality of radially attached blades between the first blades on the outer periphery of the disk. A second blade of
The first blades are respectively fixed to the outer periphery of the disk so that the base end of the slightly curved elongated plate substantially coincides with the plane including the disk, and the second blade is longer than the first blade and An apparatus characterized in that the base end of an elongated plate curved from the first blade is fixed to the outer periphery of the disk so as to be inclined at an acute angle with respect to a plane including the disk. The apparatus according to claim 1, wherein a corrugated protrusion or a sawtooth protrusion is provided on one edge of the second blade. An L-shaped arm for rotatably supporting the weeding and crushing wheel,
The end of the short side of the arm to which the weeding / crush wheel is attached via a bearing is inclined at an acute angle with respect to the plane including the arm, whereby the weeding The device according to claim 1 or 2, wherein a ground ring is attached. Further comprising a grounding force adjustment mechanism for adjusting the force for pressing the weeding and crushing wheel against the ground,
The ground contact force adjusting mechanism is configured to adjust a force acting on the weeding / crushing wheel by changing a force of a spring applied to an end portion of the long side of the arm. 3. The apparatus according to 3.

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