JP6175397B2 - Rotary tillage device - Google Patents

Description

  The present invention relates to a rotary tiller.

As a rotary tiller, there is a rotary tiller disclosed in Patent Document 1.
This rotary tilling device has a rotary tilling portion formed by attaching a number of tilling claws bent in the left-right direction from one end side to the other end side of the nail shaft on a claw shaft that rotates around the axis in the left-right direction.
This rotary tillage part has the 1st and 2nd pair nail | claw which plows soil with a pair of tilling nail | claw bent toward the other party, and makes one pile.

  These first and second pair of claws are arranged in a spiral shape in the direction of the axis of the claw axis, and are arranged out of phase with each other in the circumferential direction of the claw axis. Further, the first and second pair of claws are arranged so as to be alternately adjacent to each other in the claw axis direction.

Japanese Patent No. 3904898

As the performance of the rotary tiller, crushed soil performance and leveling performance are required. However, as in the conventional rotary tiller, the field is cultivated only by the first and second pair of claws, and in the direction of the nail axis. There may be cases where the need for a rotary tiller is not sufficiently met by simply making adjacent heaps adjacent to each other.
Also, in order to improve the soil breaking performance and leveling performance, if the nail spacing between the first and second pair claws is narrowed, there is a problem that it is easy to embed the soil between the cultivation claws. Nail spacing between tillage nails cannot be reduced.

  Then, in view of the said problem, this invention makes it a subject to provide the rotary tillage apparatus which aimed at the improvement of crushed soil performance and leveling performance.

The technical means taken by the present invention to solve the technical problems are characterized by the following points.
1stly, it has a rotary tillage part which attaches a plurality of tilling claws bent to the left-right direction from the one end side of a nail axis to the other end side on the nail | claw axis | shaft which rotates around the axial center of a left-right direction. The portion has first and second pair of claws that cultivate the soil with a pair of tilling claws adjacent to each other in the circumferential direction of the claws that are bent toward each other to form one pile. A rotary tiller in which two pairs of claws are arranged in the nail axis direction so as to be alternately formed adjacent to each other in the direction of the nail axis, in the direction of the nail axis that is bent toward each other A third pair of claws that cultivate the soil with a pair of adjacent tilling claws to form a single pile is provided, and the third pair of claws is formed with the first pair of claws and the first adjacent to the first pair of claws. across the prime made of 2 pairs pawl disposed Tsumejiku axis direction so as to tillage, first The pair of tilling claws constituting the second pair claw is cultivated after the pair of tilling claws constituting the pair claw is cultivated, and then the pair of tilling claws constituting the third pair claw is tilled. Further, these first to third pair claws are arranged .

Secondly, the pair of tilling claws that constitute the first pair of claws, the pair of tilling claws that constitute the second pair of claws, and the pair of tilling claws that constitute the third pair of claws respectively have a claw axis. It is arranged in a spiral shape in the core direction, and is arranged at equal intervals in the circumferential direction with mutually shifted phases in the claw axis circumferential direction .
Thirdly, a first pair claw row in which the first pair claw is arranged in a spiral, a second pair claw row in which the second pair claw is arranged in a spiral, and the third pair claw Are arranged in a spiral shape, and the first pair claw row, the second pair claw row, and the third pair claw row are arranged in the claw axis circumferential direction. They are characterized by being arranged at equal intervals in the circumferential direction with their phases shifted from each other .

Fourth, each pair of claws is arranged in a spiral shape in the direction of the claw axis, and a spiral pair claw row composed of each pair of claws is clawed at one end and the other end in the direction of the claw axis. The spiral arrangement is 180 ° out of phase in the axial direction .

Fifth, a first pair claw row in which the first pair claws are arranged in the claw axis direction, a second pair claw row in which the second pair claws are arranged in the claw axis direction, Two pairs of third pair claw rows in which three pair claws are arranged in the direction of the axis of the claw axis are provided .
Sixth, there is provided a fourth pair of claws that cultivate the soil with a pair of tilling claws that are bent toward each other to form a single pile, and the fourth pair of claws is the second pair of claws. In the direction of the axis of the nail axis so as to cultivate across the scale created by the first pair of claws adjacent thereto and the scale created by the third pair of claws, It is arranged .

The present invention has the following effects.
According to the present invention , the third pair of claws is cultivated across the heap made of the first pair of claws and the heap of the second pair of claws adjacent thereto, so that the soil is finely divided. It can be cultivated and the field can be cultivated evenly.
Moreover, since the 3rd pair nail plows after the height which the 1st pair nail and the 2nd pair nail plowed and formed, the crushed property is good.

In addition, a first pair claw row in which the first pair claws are arranged in the claw axis direction, a second pair claw row in which the second pair claws are arranged in the claw axis direction, and a third By providing two pairs of the third pair claw rows in which the pair of claws are arranged in the direction of the axis of the claw axis, it is possible to improve soil crushing performance and leveling performance.
Also, a fourth pair of claws is provided, and the fourth pair of claws is cultivated across the heap formed by the second pair of claws and the heap formed by the first pair of claws adjacent thereto. And by arranging in the direction of the nail axis so that a scale is formed between the scales formed by the third pair of claws, the soil breaking performance and leveling performance can be improved.

Further, each pair of claws can be arranged in a spiral shape in the direction of the axis of the nail axis and arranged at equal intervals in the circumferential direction by mutually shifting the phase in the circumferential direction of the nail axis so that the field can be plowed evenly. it can.
In addition, the first pair claw row in which the first pair claw is arranged in a spiral, the second pair claw row in which the second pair claw is arranged in a spiral shape, and the third pair claw in a spiral shape and a third pair pawl columns, and by arranging at an equal distance to the gripper shaft circumferential direction, it is possible to tilling the field to Hitoshitaira.

In addition, the spiral pair nail row composed of each pair nail has a spiral arrangement in which the phase is shifted 180 degrees in the nail axis circumferential direction between one end and the other end in the nail axis direction, thereby The mounting property can be improved.

It is a side view of a rotary tillage device. It is the rear view which expand | deployed some rotary tillage apparatuses. It is a partial development view of a rotary tillage part. It is an expanded view which shows a nail | claw driving | operation arrangement | sequence. It is a one part enlarged view of a nail | claw driving | operation arrangement | sequence. It is a partial expanded view of the rotary tillage part concerning other embodiment. It is the figure which showed the heap concerning other embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a side drive type rotary tiller 1.
In the following description, the inner side in the left-right direction refers to the direction from the end in the left-right direction of the rotary tiller 1 toward the center (the direction indicated by the arrow X1 in FIG. 2), and the outer side in the left-right direction refers to the direction of the rotary tiller 1 This refers to the direction from the center in the left-right direction toward the end (the direction indicated by the arrow X2 in FIG. 2).

The rotary tiller 1 is attached to the outer end of a gear case 2 located at the center in the left-right direction, support arms 3L, 3R protruding from the gear case 2 to the left and right sides, and one (left) support arm 3L. A rotary machine frame 6 having a transmission case 4 and a side frame 5 attached to the outer end of the other (right) support arm 3R is provided.
The gear case 2 of the rotary machine frame 6 is provided with a mast 7, and the front upper part of the mast 7 is a top link connecting portion 8 to which a top link of a three-point link mechanism is connected. The left and right support arms 3L and 3R of the rotary machine frame 6 are provided with connecting stays 9, and the front portions of the left and right connecting stays 9 are connected to the lower link connecting portion 10 to which the lower link of the three-point link mechanism is connected. It is said that.

In addition, bearing portions 11 are provided at the lower portions of the transmission case 4 and the side frames 5 of the rotary machine frame 6, and the rotating shafts 12 are supported by the bearing portions 11 so as to be rotatable about the left and right axes.
A claw shaft 15 having a horizontal axis is disposed between the left and right rotating shafts 12, and an end of the claw shaft 15 is connected to the rotating shaft 12 located on the same side in the left-right direction. The claw shaft 15 is formed by a cylindrical shaft having a horizontal axis.

  The gear case 2 is provided with a PIC shaft 16 to which rotational power is transmitted via a joint from the PTO shaft of the tractor. The power transmitted to the PIC shaft 16 is transmitted to the left rotating shaft 12 via the gear transmission mechanism 17 in the gear case 2, the transmission shaft 18 in the left support arm 3L, and the chain transmission means 19 in the transmission case 4. The The claw shaft 15 is rotationally driven around the axis by the power transmitted to the left rotation shaft 12.

  A plurality of (many) claw mounting brackets 21 to which the tilling claws 20L and 20R are attached are provided on the outer peripheral surface of the claw shaft 15 from one end side to the other end side of the claw shaft 15. The claw mounting bracket 21 is disposed at intervals in the claw axis direction X from one end side to the other end side of the claw shaft 15 and a plurality of tilling claws 20L and 20R are simultaneously driven into the soil. So that the phase is shifted in the circumferential direction of the claw axis (there may be tilling claws 20L, 20R that are simultaneously applied).

The bases of the tilling claws 20L and 20R are attached and fixed to each claw mounting bracket 21, and the tilling portion C is constituted by the claw shaft 15 and the tilling claws 20L and 20R. The upper part of the cultivating part C is covered with a main cover 22, and the rear part of the cultivating part C is covered with a rear cover 23.
In this rotary tiller 1, when the claw shaft 15 (cultivation part C) is rotationally driven in the direction of arrow A in FIG. 1, the tilling claws 20 </ b> L and 20 </ b> R enter the soil to plow the soil. Then, the cultivated soil lump is released rearward and hits the rear cover 23 to crushed the soil.

The tilling claws 20L and 20R are bent in the left-right direction, and a left-facing tilling claw 20L that is bent toward the transmission case 4 and a right-side tilling claw 20R that is bent toward the side frame 5 side. There is.
As shown in FIGS. 3 to 5, the rotary tilling portion C includes one left-side tilling claw 20 </ b> L and one right-side tilling claw 20 </ b> R adjacent to each other in the axial direction X of the claw axis. A pair of tilling claws 20L, 20R), and first to third three kinds of pair claws 26, 27, 28 that cultivate the soil to form a single pile. The pair of tilling claws 20L, 20R constituting the pair claws 26, 27, 28 are arranged with a phase shifted in the circumferential direction Y of the claws.

The first to third pair claws 26, 27, and 28 are arranged in a spiral shape in the claw axis direction X, respectively. Thus, the second pair of claws 27 constitutes a spiral second pair of claws 32, and the third pair of claws 28 constitutes a spiral third pair of claws 33.
These first to third pair claw rows 31, 32, 33 are arranged at equal intervals in the claw axis circumferential direction Y, that is, arranged with a phase shift of 120 ° in the claw axis circumferential direction Y.

The first to third pair claw rows 31, 32, and 33 are arranged in a spiral arrangement that is 180 ° out of phase in the claw axis circumferential direction on one end side and the other end side in the claw axis direction X. Yes.
In FIG. 5, the code | symbol 36 has shown the 1st heap | cultivation with the 1st pair nail | claw 26, the code | symbol 37 has shown the 2nd heap | cultivation with the 2nd pair claw 27, Reference numeral 38 indicates a third height cultivated by the third pair of claws 28.

The plates 36 and 37 formed by the first and second pair claws 26 and 27 are alternately formed adjacent to each other in the claw axis direction X, and the plate 38 formed by the third pair claws 28 is the first The pair 36 is formed across a scale 36 made of the pair of claws 26 and a scale 37 made of the second pair of claws 27 adjacent thereto.
Also, since the first to third pair claw rows 31, 32, 33 are out of phase in the claw axis circumferential direction Y, respectively, by rotating the claw shaft 15 in the arrow A direction, After the first pair claw 26 is plowed, the second pair claw 27 is plowed, and then the third pair claw 28 is plowed.

All the tilling claws 20L and 20R on the claw shaft 15 of the present embodiment are shifted in phase in the claw axis circumferential direction Y so as not to strike at the same time, but may be partially hit at the same time.
The number of tilling claws 20L, 20R can be changed depending on the length, diameter, etc. of the claw shaft.
In the rotary tiller 1 having the above-described configuration, the third pair claw 28 includes a scale 36 made of the first pair claw 26 and a scale 37 made of the second pair claw 27 adjacent thereto. Since it is cultivated across the land, the soil can be finely cultivated and the field can be cultivated evenly.

Moreover, since the 3rd pair nail | claw 28 plows after the heaps 36 and 37 which the 1st pair nail | claw 26 and the 2nd pair nail | claw 27 plowed and formed, crushing property is good.
The pair claws 26, 27, and 28 are arranged in a spiral shape in the claw axis direction X, and are shifted in phase in the claw axis circumferential direction Y so as to be equally spaced in the circumferential direction Y (120 ° intervals). It can be cultivated evenly.

Further, the spiral pair claw rows 31, 32, 33 constituted by the pair claws 26, 27, 28 have a 180 ° phase in the claw axis circumferential direction Y at one end and the other end in the claw axis direction X. Due to the shifted helical arrangement, the attachment of the tilling claws 20L, 20R can be improved.
Further, the scales 36 and 37 formed by the first and second pair claws 26 and 27 are alternately formed adjacent to each other in the claw axis direction X, and the scale 38 formed by the third pair claws 28 is The first to third pair claws 26, 27, 27 are formed so as to straddle the heap 36 made of the first pair claw 26 and the heap 37 made of the second pair claw 27 adjacent thereto. 28 is arranged, so that the crushing performance and leveling performance can be achieved without narrowing the claw spacing (interval in the claw axis direction X) of the pair of tilling claws 20L, 20R constituting each pair claw 26, 27, 28. The pair of tilling claws 20L, 20R that constitute each pair of claws 26, 27, 28 can have a claw distance that does not entrap soil (pair claws 26, 27, 28). The nail interval between the pair of tilling claws 20L, 20R constituting the nail is sufficient. You bet it is).

  FIG. 6 shows a part of a development view of the rotary tiller C according to another embodiment. In this embodiment, the first pair claw row 31 in which the first pair claw 26 is arranged in the claw axis direction X and the second pair claw 27 are arranged in the claw axis direction X. The second pair of claw rows 32 arranged in the first pair and the third pair of claw rows 33 in which the third pair of claws 28 are arranged in the claw axis direction X are provided in pairs, and the first pair Two sets of the nail row 31, the second pair claw row 32, and the third pair claw row 33 in the claw axis circumferential direction Y are provided.

Thereby, the crushed soil performance and leveling performance can be improved.
FIG. 7 shows an embodiment in which a fourth pair claw (not shown) is provided in addition to the first to third pair claws 26, 27, 28, and the first to third pair claws 26, 27, 28 shows a scale 36, 37, 38 made of 28 and a fourth scale 39 made of a fourth pair of claws.
Similarly to the third pair claw 28, the fourth pair claw is composed of a pair of tilling claws 20L and 20R that are bent toward each other, and is arranged in a spiral shape in the claw axis direction X. In addition, the spiral pair claw row constituted by the fourth pair claw naturally includes the pair claw rows 31, 32, 33 constituted by the first to third pair claws 26, 27, 28. Is arranged with the phase shifted in the circumferential direction Y of the claw axis.

The fourth pair of claws is cultivated across the second scale 37 made of the second pair of claws 27 and the first scale 36 made of the first pair of claws 26 adjacent thereto, And it arrange | positions so that it may plow between the 3rd heaps 38 made with the said 3rd pair nail | claw 28. FIG. Thereby, the crushed soil performance and leveling performance can be improved.

15 Claw shaft 20L Claw claw 20R Claw claw 26 First pair claw 27 Second pair claw 28 Third pair claw 31 First pair claw row 32 Second pair claw row 33 Third pair claw row 36 (First prime)
37 prime (second prime)
38 prime (third prime)
39 prime (fourth prime)
C Rotary tillage part X Claw axis direction

Claims (6)

On the claw shaft that rotates around the axis in the left-right direction, there is a rotary tillage part that is formed by attaching a plurality of tilling claws bent in the left-right direction from one end side to the other end side of the claw shaft. The first and second pair of claws have first and second pair claws that cultivate the soil with a pair of tillage claws adjacent to each other in the circumferential direction of the claws that are bent toward the other party to create one pile. Is a rotary tiller arranged in the direction of the nail axis so as to alternately make the above-mentioned piles in the direction of the nail axis,
Providing a third pair of claws that cultivate the soil with a pair of tilling claws adjacent to each other in the circumferential direction of the claws that are bent toward each other,
This third pair of claws is arranged in the direction of the axis of the claws so that it is cultivated across the pile made of the first pair of claws and the pile made of the second pair of claws adjacent thereto. ,
The pair of tilling claws constituting the second pair of claws is cultivated after the pair of tilling claws constituting the first pair of claws is cultivated, and then the pair of tilling claws constituting the third pair of claws is cultivated. The rotary tiller characterized by these 1st-3rd pair nail | claws being arrange | positioned so that it may raise | generate. The pair of tilling claws constituting the first pair of claws, the pair of tilling claws constituting the second pair of claws, and the pair of tilling claws constituting the third pair of claws respectively spiral in the direction of the axis of the claws. The rotary tiller according to claim 1, wherein the rotary tillers are arranged at regular intervals in the circumferential direction with the phases shifted from each other in the circumferential direction of the claw axis . A first pair claw row in which the first pair claws are arranged in a spiral shape, a second pair claw row in which the second pair claws are arranged in a spiral shape, and the third pair claw in a spiral shape A third pair of nail rows arranged,
The first pair claw row, the second pair claw row, and the third pair claw row are arranged at equal intervals in the circumferential direction with their phases shifted in the claw axis circumferential direction. The rotary tiller according to claim 2 characterized by things. Each pair of claws is spirally arranged in the direction of the claw axis, and a spiral pair of claw rows composed of each pair of claws is arranged in the claw axis circumferential direction at one end and the other end in the claw axis direction. The rotary tiller according to any one of claims 1 to 3, wherein the rotary tiller is in a spiral arrangement with a phase difference of 180 ° . A first pair claw row in which the first pair claw is arranged in the claw axis direction, a second pair claw row in which the second pair claw is arranged in the claw axis direction, and a third pair claw The rotary tiller according to any one of claims 1 to 4, wherein two pairs of third pair claw rows arranged in the axial direction of the claw axis are provided . A fourth pair of claws that cultivate the soil with a pair of tilling claws that are bent toward each other to create one pile is provided, the fourth pair of claws being formed with the second pair of claws It is arranged in the direction of the axis of the claw axis so that it is cultivated across the first pair of claws that are adjacent to this and is formed between the third pair of claws. The rotary tiller according to any one of claims 1 to 5 .

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