[TITLE OF THE DOCUMENT] SPECIFICATION
[TITLE OF THE INVENTION] ARRANGEMENT STRUCTURE OF TILLAGE TINE FOR TILLING APPARATUS
[DETAILED DESCRIPTION OF THE INVENTION]
[TECHNICAL FIELD]
[0001] The present invention relates to an arrangement structure of tillage tine for a
tilling apparatus.
[BACKGROUND ART]
[0002] Techniques disclosed on Patent document 1 and Patent document 2 are previously
known as the rotary tilling apparatuses. Each of the rotary tilling apparatuses disclosed in
Patent document 1 and Patent document 2 includes: a revolution shaft configured to revolve
about a shaft center; a plurality of brackets disposed on the revolution shaft; and a tillage tine
attached to each of the brackets. Each of the rotary tilling apparatuses employs a
curved-knife tine as the tillage tine, the curved-knife tine being suitable for upturning (turning
over) the soil.
[RELATED ART DOCUMENTS]
[PATENT DOCUMENTS] [0003]
[Patent document 1] Japanese Unexamined Patent Application Publication [No. H09-248002.
[Patent document 2] Japanese Unexamined Patent Application Publication [No. Hll-46501.
[DISCLOSURE OF THE INVENTION]

[Problems to be solved by the Invention]
[0004] Meanwhile, an L-shaped tine suitable for finely graining the soil is known as the tillage tine, other than the curved-knife tine. The rotary tilling apparatus is normally configured to install a single type of the tillage tine, and thus it is hard for the curved-knife tine and the L-shaped tine to provide equivalent tillage performance when the curved-knife tine and the L-shaped tine is installed in an identical way.
In addition, the revolution shaft revolves a plurality of flanges in the tilling operation by the rotary tilling apparatus, the flanges being attached on and along the revolution shaft, and thus the plurality of tillage tines attached to the flanges till an agricultural field and the like. The soil and the like are attached to the revolution shaft, the flanges, the tillage tines, and the like in the tilling operation. When the attaching soil and the like grow into clods, the soil is accumulated in the rotary tilling apparatus, and thus the accumulation causes a large load applied to the flanges and the revolution shaft.
[0005] The present invention intends to provide an arrangement structure of the tillage tine for the tilling apparatus, the arrangement structure allowing two types of tillage tines to sufficiently produce the tillage performance whichever the two types of tillage tines are attached.
In addition, the present invention is intends to provide an arrangement structure of the tillage tine for the tilling apparatus, the arrangement structure being capable of reducing the load even when the soil and the like are accumulated into the clods.
[Means of Solving the Problems]
[0006] To solve the above-mentioned technical problems, techniques that the present
invention provides are characterized in the following points.
In a first aspect of the present invention, an arrangement structure of a tillage tine for a tilling apparatus includes: a revolution shaft; and a plurality of flanges disposed at an interval in an axial direction of the revolution shaft, the flange including a plurality of attachment portions configured lo selectively mount a plurality of first tillage tines and a

plurality of second tillage lines other than the first tillage tines, wherein an arrangement direction of the first tillage tines adjacent to each other and facing an identical direction under a state where the plurality of first tillage tines are attached to the plurality of flanges is different from an arrangement direction of the second tillage lines adjacent to each other and facing an identical direction under a state where the plurality of second tillage tines are attached to the plurality of flanges.
[0007] In addition, an angle of the arrangement direction of the first tillage tines with respect to the axial direction is different from an angle of the arrangement direction of the second tillage tines with respect to the axial direction.
in addition, an arrangement structure of a tillage tine for a tilling apparatus includes: a revolution shaft; and a plurality of flanges disposed at an interval in an axial direction of the revolution shaft, the flange including a plurality of attachment portions configured to selectively mount a plurality of first tillage tines and a plurality of second tillage tines other than the first tillage tines, wherein a tine distance between the first tillage tines attached to an identical one of the flanges and facing an identical direction under a state where the plurality of first tillage tines are attached to the plurality of flanges is different from a tine distance between the second tillage tines attached to an identical one of the flanges and facing an identical direction under a state where the plurality of second tillage tines are attached to the plurality of flanges.
[0008] In addition, the line distance between the first tillage tines is smaller than the tine distance between the second tillage tines.
In addition, a maximum revolution path of the first tillage tine under a state where the first tillage tines are attached is approximately identical to a maximum revolution path of the second tillage tine under a state where the second tillage tines are attached.
[0009] In addition, the attachment portions are disposed on an identical circle traced about the revolution shaft.
In addition, in another aspect of the present invention, an arrangement structure of a tillage tine for a tilling apparatus includes: a revolution shaft; a plurality of flanges disposed at

an interval in an axial direction of the revolution shaft; and a plurality of tillage tines configured to be attached to the flanges, wherein the plurality of tillage tines are attached to the flanges, tillage tines differentiating a first interval of the tillage tines attached to adjacent two of the flanges and facing to each other from a second interval of the tillage tines attached to other adjacent two of the flanges and facing to each other.
[0010] In addition, the first interval is an interval between a primary one of the tillage tines attached to a primary one of the flanges and a secondary one of the tillage tines attached to a secondary one of the flanges adjacent to the primary one of the flanges, the secondary one of the tillage tines facing the primary one of the tillage tines to each other, and the second interval is an interval between a thirdly one of the tillage tines attached to the secondary one of the flanges, the thirdly one of the tillage tines being other than the secondary one of the tillage tines, and a fourthly one of the tillage tines attached to a thirdly one of the flanges adjacent to the secondaiy one of the flanges, the thirdly one of the flanges being other than the primary one of the flanges and the secondary one of the flanges, the fourthly one of the tillage tines facing the thirdly one of the tillage tines to each other.
[0011] In addition, an arrangement structure of a tillage tine for a tilling apparatus includes: a revolution shaft; a plurality of flanges disposed at an interval in an axial direction of the revolution shaft; and a plurality of tillage tines configured to be attached to the flanges, wherein the plurality of tillage tines are attached to the flanges, tillage tines differentiating an angle of a first line with respect to the axial direction, the first line connecting the tillage tines attached to adjacent two of the flanges and facing to each other, from an angle of a second line with respect to the axial direction, the second line connecting the tillage tines attached to other adjacent two of the flanges and facing to each other.
[0012] In addition, the angle of the first line with respect to the axial direction, the first line connecting a primary one of the tillage tines attached to a primary one of the plurality of flanges and a secondary one of the tillage tines attached to a secondaiy one of the flanges adjacent to the primary one of the flanges, the secondary one of the tillage tines facing the primary one of the tillage tines to each other, is different from the angle of the second line

with respect to the axial direction, the second line connecting a thirdly one of the tillage tines attached to the secondary one of the flanges, the thirdly one of the tillage tines being other than the secondary one of the tillage tines, and a fourthly one of the tillage tines, attached to a thirdly one of the flanges adjacent to the secondary one of the flanges, the thirdly one of the flanges being other than the primary one of the flanges and the secondary one of the flanges, the fourthly one of the tillage tines facing the thirdly one of the tillage tines to each other. [0013] In addition, the secondary one of the tillage tines is a tillage tine that is attached to the secondary one of the flanges and has the smallest distance from the primary one of the tillage tines in a circumferential direction, and the fourth one of the tillage tines is a tillage tine that is attached to the thirdly one of the flanges and has the smallest distance from the thirdly one of the tillage tines in the circumferential direction.
In addition, an arrangement structure of a tillage tine for a tilling apparatus includes: a revolution shaft; a plurality of flanges disposed at an interval in an axial direction of the revolution shaft; and a plurality of tillage tines configured to be attached to the flanges, wherein tillage tines attached to an identical flanges are arranged in in the non-point symmetry, the tillage tines being included in the plurality of the tillage tines. [0014] In addition, the plurality of flanges are attached, shifting a phase in a circumferential direction of the flanges gradually along the axial direction.
[EFFECTS OF THE INVENTION]
[0015] According to the present invention, the following effects are provided.
The arrangement structure of the tillage tine configures an arrangement direction of the first tillage tines adjacent to each other in the axial direction and facing an identical direction to be opposite to an arrangement direction of the second tillage tines adjacent to each other in the axial direction and facing an identical direction. In this manner, it can be prevented to deteriorate the tilling performance of the first tillage tine and the second tillage line. For example, if the first tillage tines and the second tillage tines that are different types
i-"rr\m r»oMi r\t\-\/*r cirp ■irrani'rci) in 'in irlF>nti/->a 1 riit-^r-tinn it ic imnfl5