JPH08130903A - Tilling rotary working machine - Google Patents

Abstract

PURPOSE: To improve the working efficiency of a rotary tilling machine by expanding the tilling width of the machine without largely increasing the necessary power. CONSTITUTION: This tilling rotary working machine has a tilling tine shaft 17 provided with plural tilling tines 18. Two tilling tines 18A, 18B directed in the same direction and one tilling tine 18C having opposite direction are attached to the tilling tine shaft 17 on the same cross section. The three tilling tines 18A, 18B, 18C are used as a set and plural sets of tines are arranged in the right and left directions of the tilling tine shaft 17 interposing a prescribed spaces between the sets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilling rotary working machine in which the tilling width is expanded while the required power is kept substantially constant, so that the tilling work efficiency is greatly improved as compared with the conventional case.

[0002]

2. Description of the Related Art Conventionally, in a cultivating work in which a cultivating rotary is attached to the rear of a tractor or a cultivator, a means for increasing the traveling speed during the cultivating work is a means for improving the working efficiency. is there.

[0003]

However, when the traveling speed is set to a high speed as described above, if the rotation of the tilling rotary is maintained at the conventional standard rotation speed, the residual tillage becomes large, resulting in the Get rough. Further, it is necessary to increase the rotation of the tilling rotary according to the traveling speed, but there is a drawback that the required power is correspondingly large.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a tilling rotary working machine in which a plurality of tilling claws are provided on a tilling claw shaft, the directions of the claws are the same in the same direction on the same cross section of the tilling claw shaft. One tilling claw and one tilling claw opposite to each other are provided, and a plurality of these three tilling claws are provided as a set with a predetermined interval in the left-right direction of the tilling claw shaft. The standard width of plowing carried out with four claws is reduced by one claw with the same required power as the required power, so that the plowing width can be effectively expanded and workability per operation is improved. It improves efficiency.

Further, the right and left outermost parts of the rotary working machine are formed separately so as to be foldable inside the working machine, and at the time of the plowing work, the plowing work with a large plowing width is carried out and at the same time the plowing work is performed. , When not in use, the width of the rotary working machine is reduced, which makes it easy to handle on the road and in storage.

[0006] Further, a plowing pawl is attached to the plowing pawl shaft in a size larger than the standard mounting interval width to expand the plowing width with the standard number of plowing pawls. The plowing width per rotation is effectively expanded to greatly improve the work efficiency.

Furthermore, a cutting blade for appropriately plunging into the soil between the mounting intervals of the plowing pawl is detachably arranged in front of the plowing pawl. Even when it remains as uncultivated land, the cutting blade can effectively cut it off to minimize the occurrence of residual tillage.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of a cultivating rotary part, FIG. 2 is a plan view of the whole, and FIG. 3 is a side view of a cultivating rotary working machine. In the figure, (1) is a tractor having front and rear wheels (2) and (3), and a driver's seat (5) provided on a body frame (4).
The front steering wheel (6) is configured to turn the front wheels (2) to change the traveling course.

As shown in FIGS. 4 to 5, a center drive type tilling rotary working machine (8) is mounted on a tractor (1) through a lower link (7), and a gear box (9) is installed at the center. Place the PTO of the tractor (1) through the drive shaft (10) with a universal joint.
The input shaft is connected to the shaft to transmit power. Beam (11) on both sides from the side of the gear box (9)
And a support plate (12) is fixedly installed at a middle portion of each of the beams (11), and a pin for pivotally connecting the lower link (7) is provided at a front end of the support plate (12) so as to have a rear end. The front end of the depth frame (13) is pivotally supported at the front end of the mast (14), and a pivotal connection portion of the top link (15) is formed at the front end of the mast (14).

An upper part of the chain case (16) is fixedly mounted on the gear box (9), and a tilling claw shaft (17) is horizontally installed on the lower side of the chain case (16) so that the tilling claw shaft (17) is provided. A large number of plowing claws (18) consisting of nata claws are radially planted in a side view and the plowing claws (18)
The upper part of the rotation locus is covered by a rotary cover (19), and both sides are covered by side covers (20).
The tiller shaft (17) is a gear in the gear box (9) and a sprocket (16) in the chain case (16).
A) (16b) and the chain (16c) are driven, and the tilling claws (18) are rotated to perform the tilling.

As shown in FIG. 6, the beam (1
1) A plate (21) is fixedly provided in front of the plate (21), a support rod (22) is horizontally mounted on the front end of the plate (21), and a mounting plate (23) is attached to the support rod (22) as a cylinder shaft (24) and A set bolt (25) is used to fix the right and left positions so that the cutting blade (27) is detachably fixed to the mounting plate (23) via a set bolt (26).

The cutting blade (27) is appropriately arranged approximately in the center between the tip claw loci (L) adjacent to the left and right of the tilling claw (18), and the middle part of the cutting blade (27) is curved backward. The intermediate portion is provided so as to face the front portion of the rotation locus of the tilling claw (18), and the lower tip side of the middle is inclined forward so that the tip projects into the ground. That is, when viewed from the side, the middle part of the cutting blade (27) is cultivated with the plowing claw (18).
It is arranged so as to overlap in the front part of the rotation locus of No. 1 and the interval between the cutting blade (27) and the plowing claw (18) is narrowed to prevent residual plowing, and work is performed by plowing resistance during plowing work. The lifting of the machine (8) is suppressed by the action of the cutting blade (27) into the ground.
However, the cutting blade (27) is not provided between the tilling claws (18) and all of the tilling claws (18), and may be appropriately spaced so as not to cause tilling resistance.

The tilling claw (18) is a holder mounting type, and three claws (18) are radially attached to the same cross section of the tilling claw shaft (17). The holders (28) that are provided in the rows so as to protrude in the radial direction at intervals of 120 ° are detachably attached with the tillage claws (18) via bolts (29).

Further, the plowing claw (18) has its tip bent to the right or left in order to invert the soil after cutting it. The bending direction of two claws (18A) (18B) among the three. Are the same, and the bending direction of the remaining one claw (18C) is the opposite direction, and these three claws (18A) (18
B) (18C) is attached as one set to the circumferential row of the tilling claw shaft (17), and multiple rows are provided with a constant tip claw locus (L) interval (t) in the left-right direction of the tilling claw shaft (17). It is equipped with multiple sets of tillage claws (18).

Further, in contrast to the conventional four claw structure in which the bending directions attached to the same cross section of the claw shaft (17) are two in the left or right, the three claws (18).
By reducing A) (18B) (18C), the additional power is added to the extension part that extends the standard claw shaft (17) left and right with the power required for one claw for each set that has been reduced. It can be installed and has 3 claws (1 for the conventional tillage width (d).
8A) (18B) (18C) plowing width (D)
Is designed to be greatly expanded while keeping the required power approximately constant. In other words, compared with the conventional method, the plowing width (D) is expanded while keeping the traveling speed, the number of rotations of the claw shaft (17), and the total number of claws substantially constant, so that the required power is maintained at a substantially constant level. High efficiency of tilling work while
It is configured to reduce costs.

Further, as shown in FIGS. 7 to 9, in addition to the reduction of the number of pawls mounted on the same cross section of the pawl shaft (17), the mounting interval width of the pawls (18) in the left-right direction is also increased to cultivate. The claw (D) can be enlarged, and the base interval (T) of the left and right plowing claws (18) (18) mounted on the holders (28) (28) is set to a large gap 5. On the other hand, if the interval (t), which is the gap between the tip claw loci (L), is set to be approximately 1 (T: t≈5: 1), and in this embodiment the turning radius a is approximately 245 mm, the base portion The interval (T) is 200 mm, the tip claw locus interval (t) is about 40 mm, and the base interval (T) is increased to decrease the number of the plowing claws (18). Configured so that the plowing width can be expanded by the decrease Than it is.

Next, referring to FIG. 8 to FIG. 9, the structure of the naginata-shaped ratchet claws configured to exert elasticity will be described. As shown in FIG. 8, it is curved in a reverse C shape in a side view, a blade portion (18c) is provided on the curved protruding side of the reverse C, and the point of rotating toward the side of the blade portion (18c) is the conventional point. It is the same as the nata, but the part of the nail seat insertion part (18a) to be inserted into the holder (28) is formed in the shape of a one-touch mounting claw in which the direction is shifted from the center O1 of the tilling claw shaft (17), The wedge portion of the claw seat insertion portion (18a) is made to bite into the holder (28) and fixed by simply inserting and plowing.

The radius of rotation for rotating the tiller claw (18) with the rotation of the tiller claw shaft (17) in the state of being attached to the tiller claw shaft (17) is a (in the embodiment, about 245 mm. ), As shown in FIG. 9, the plow claw (18) is gradually curved toward the tip end in plan view,
The bending radius e from the bending center O2 is about 120 mm,
The ratio of the bending radius e to the turning radius a is set to about 1: 2,
The blade (18a) and the back (1
A curved portion (18b) having a scooping surface is formed between the curved portion (8b) and 8d) so as to exert elasticity.

Further, the thickness of the tilling claw (18) itself is constructed so as to gradually become thinner toward the tip, and even if this thickness becomes thinner, the elasticity can be positively exhibited. In the embodiment, the base portion thickness c is about 5 mm at the first portion of the bending radius e, whereas the tip end thickness d is configured to be as thin as about 3 mm. The ratio of the tip thickness d to
It is composed of about 3 pairs.

In FIG. 9, the nail seat insertion portion (18a)
The lateral bending width that exhibits conventional plasticity is set such that the ratio of the lateral bending width b, which is the protruding distance of the tip of the tilling claw (18) to the side, from the end portion of the plow is approximately 1: 3. By increasing the curved width b with respect to the component claw, the elasticity is further enhanced.

That is, the plowing claw (18) has a large curving width (b) (b≈80 mm) with a large curving width (b) (b≈80 mm) by curving the soil after cutting the soil and scooping the soil so that the tip side is greatly curved laterally. 18b) is formed into an easily deformable elastic claw, and when the plowing claw (18) is driven into the soil, the horizontal component force of the bending portion (18b) pushes and moves the soil in the curved lateral direction, and the plowing claw ( By the lateral repulsive force when elastically deforming 18) in the anti-curving direction due to the resistance load of the soil, the scooping soil is extruded in the lateral direction substantially parallel to the tillage claw shaft (17) shown in FIG. Thus, the soil portion remaining as residual tillage is crushed between the tip loci (L) of the opposing left and right tillage claws (18), and the residual tillage is effectively prevented from being formed. . Further, in this case, when the nail (18) rotates to the vicinity of the cutting end point and the resistance load of the soil becomes small, the soil portion left as residual tillage due to the restoring elastic force due to elastic deformation at the time of driving the nail (18) is laterally moved. By crushing, the crushing effect is further improved, and the cutting soil itself is also subjected to a strain force due to an elastic return force so as to crush the soil into soft loose soil.

As described above, even if the number of tilling claws (18) of the rotary working machine (7) is set to about 70% as compared with the conventional rotary working machine, the remaining 30% is used for the expansion of the tilling width. By turning, the plowing width can be further expanded.

As shown in phantom in FIG. 1, a partition plate (30) is disposed between the rear portion of the cutting blade (27) and the rotary cover (19) to partition the inner peripheral surface of the front end of the rotary cover (19). The plate (30) is fixed, and the partition plate (30) is formed in a substantially triangular shape, and the upper end of the partition plate (30) is higher than the upper end of the rotation locus (L) of the tiller claw (18). The width (plate thickness) of the partition plate (30) is made slightly smaller than the blade width of the cutting blade (27) so that straws and weeds carried around by the tilling claw (18) can be lowered downward along the rear arc surface. The cutting blade (27) is not entangled with straw or weeds.

By the way, as shown in FIGS. 1, 4 and 5,
The rotary working machine (8) is provided so that the left and right outermost parts can be folded inside the machine body. The beam (11) and the claw shaft (1
7) -Rotary cover (19) -Supporting rod (22), etc. outermost parts (11a) (17a) (19a) (22)
a) is divided and formed, and the support rod (22) and the divided portion (22a) are connected to each other through a hinge (31) serving as a fulcrum shaft for folding, and the beam (11) / claw shaft (17) is used during work.
-Rotary cover (19) and these division parts (11a)
(17a) and (19a) are fixedly connected to each other with a pair of flanges (32) and bolts (33), and when not in operation, the pair of flanges (32) are unfixed to separate the hinges (31) into the inside of the machine body. Part (11a) (17a) (19
(a) and (22a) are folded and housed as shown by the phantom line in FIG. 4 so that the entire lateral width of the working machine (8) is reduced.

Further, each division part (11a) (17a) (1
At the time of cultivating work by expanding 9a (22a) to the left and right, the beam (1) is applied from the tractor (1) side or the working machine (8) main body side by a reinforcing member (34) such as a spring or a link.
1) or one of the divided portions (11) and (22) of the support rod (22) is supported, and these divided portions (11a) are supported.
(17a) (19a) (22a) is configured to improve the support strength.

The present embodiment is constructed as described above, and conventionally, for example, the number of claw shaft rotations is about 170 with two claws per rotation on each of the left and right sides on the same cross section of the claw shaft (17).
For the work performed under the working conditions of rpm and vehicle speed of 0.5 m / s, the number of claws per rotation on the same cross section of the claw shaft (17) is two on either side, one on the left and one on the other. Rotation speed is approximately 170 rpm, vehicle speed is approximately 1.3 times the standard vehicle speed, and plowing width (D) is approximately 1.5 times the standard plowing width (d). It is about twice as large.

That is, when the plowing width (D) is expanded from the standard while the plowing depth is kept constant, the plowing load also increases, but the number of nails on the same cross section of the nail shaft (17) is four. However, the number is reduced to three (two nails on the opposite side to one nail).
By increasing the mounting interval width of the plowing pawls (18) in the plowing width direction on the pawl shaft (17), the increase of the plowing load can be suppressed to a minimum. In this case, the curved portion (18b) of the elastic claw (18) is formed even when a gap (t) is formed between the tip claw trajectories (L) of the tilling claw (18) and remains as residual tillage.
The residual horizontal tillage can be eliminated by effectively crushing the residual tillage soil portion by the horizontal component force due to and the repulsive force of elastic deformation. Further, in the position of the interval (t) where it is difficult to crush even with the crushing force of the claws (18), for example, in the case of the trailing wheel (3) traces or the compacted soil surface or the raised soil surface near the left and right, the interval (t) is omitted. By the cutting blade (27) arranged in the center, the soil in the interval (t) portion is cut down in advance before it is tilled by the claw (18), so that the residual tillage can be eliminated.

Further, the side of the plowing claw (18) is overlapped with the section of the plunging claw (18) so that the plunging point of the cutting blade (27) substantially coincides with each other, and the cutting blade (when cutting the soil of the plowing claw (18) ( The soil is cut by 27), and the cut soil is easily cultivated by the plowing claw (18),
It is possible to reduce the load of this tilling work,
It is possible to eliminate cutting of weeds and the like entwined with the tilling claw (18) and prevent the growth of the weeds in the soil.

[0029]

EFFECTS OF THE INVENTION As is apparent from the above embodiments, the present invention is a tilling rotary working machine in which a tilling claw shaft (17) is equipped with a plurality of tilling claws (18), and the same cross section of the tilling claw shaft (17). Two plowing claws (18A) (18B) with the direction of the claw in the same direction on the left and right and one plowing claw (18C) with the opposite direction are provided, and these three plowing claws (18A)
(18B) and (18C) are set as one set, and a plurality of sets are provided with a predetermined interval in the left-right direction of the tiller shaft (17). On the other hand, by reducing the power of one claw with the same required power, the plowing width can be effectively expanded, and high-efficiency plowing work with a large total plowing width (D) is possible. Can be made.

Further, since the rotary working machine is divided into right and left parts and is provided so as to be foldable inside the working machine, a high-efficiency plowing work with a large plowing width (D) can be performed at the time of plowing work. The width of the rotary working machine can be reduced when it is performed, and it is easy to handle on roads and in storage.

Further, since the plowing claw shaft (17) is fitted with the plowing claws (18) larger than the standard mounting interval width, the plowing width is expanded by the standard number of plowing claws. It is possible to effectively expand the plowing width per turn with the same required power as in the above, and it is possible to greatly improve the working efficiency.

Furthermore, since the cutting blade (27) for appropriately plunging into the soil between the mounting intervals of the tilling claw (18) is detachably arranged in front of the tilling claw (18), field conditions etc. Even if the plowing claw (18) is left as unplowed land (uncultivated land) in the mounting interval width, the cutting blade (27)
By this, it is effectively cut down, and the remarkable effect of suppressing the occurrence of residual tillage to a minimum is achieved.

[Brief description of drawings]

FIG. 1 is a side view of a rotary portion.

FIG. 2 is an overall plan view.

FIG. 3 is a side view of a rotary tillage implement.

FIG. 4 is an explanatory plan view of the tilling rotary working machine.

FIG. 5 is a rear view of the tillage rotary working machine.

FIG. 6 is an explanatory view of the attachment of the tilling claw.

FIG. 7 is a rear view of the tilling claw portion.

FIG. 8 is a side view of a tilling claw.

FIG. 9 is a plan view of a tilling claw.

[Explanation of symbols]

 (8) Rotary working machine (17) Tilling claw shaft (18) Tilling claw (18A) (18B) (18C) Claw (27) Cutting blade (D) (d) Tilling width

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Osamu Nakagawa 1-32 Chayamachi, Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Takahashi Toko 1-32-32 Chayamachi, Kita-ku, Osaka Yanmar Diesel Co., Ltd. (72) Inventor Takashi Hirano 1-32 Chayamachi, Kita-ku, Osaka City Yanmar Diesel Co., Ltd. (72) Inventor Katsu Yamamoto 1-1-1 Ishishiba, Matsumoto-shi, Nagano Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Factory (72) Inventor, Mitsuru Miyazaki, No. 1 Ishinomashi, Matsumoto City, Nagano Prefecture 1-1-1, Ishikawajima Shibaura Machinery Co., Ltd., Matsumoto Factory (72) Inventor Tetsuzawa Tetsuya Ishimoto, Matsumoto City, Nagano Prefecture 1-1-1 Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto factory

Claims (4)

[Claims] 1. A tilling rotary working machine in which a plurality of tilling claws are provided on a tilling claw shaft, and two tilling claws in which the directions of the claws are the same in the same direction on the same cross section of the tilling claw shaft and the opposite direction. Provide one plowing claw and set these three plowing claws
A tilling rotary working machine characterized in that a plurality of pairs are provided with a predetermined interval in the left-right direction of the tilling claw shaft as a set. 2. A rotary working machine is divided into left and right parts,
The cultivating rotary working machine according to claim 1, wherein the foldable rotary working machine is provided inside the working machine in a foldable manner. 3. A tilling rotary working machine, characterized in that a tilling claw is mounted on a tilling claw shaft so as to be larger than a standard mounting interval width, and the tilling width is expanded with a standard number of tilling claws. 4. The tilling rotary working machine according to claim 1 or 2, wherein a cutting blade for appropriately plunging into the soil between the attachment intervals of the tilling claws is detachably disposed in front of the tilling claws.