JPH0884502A - Rotary working machine - Google Patents

Abstract

PURPOSE: To provide a rotary working machine in which cutting blades are arranged vertically outside the width of the rear wheels of the driving cart in front of the tilling rotaries attached to the driving cart, thereby preventing waste straws and weeds from entangling to the rotary at high-speed running effectively and cutting the soil into pieces to level the depressions formed after the wheels have passed. CONSTITUTION: The tractor 1 as a driving cart is equipped with a rotary tiller 5 in its rear and a plurality of rotary nails of a bill hook shape 17 are rotated to effect tilling. Cutting blades 24 are arranged each every several nails to inhibit the front wheels 26 from sinking in the ground. The cutting blades are bent backward at their lower part to face in the front of the rotary traces of the rotary nails and the cutting blades are arranged outsider than the elongation of the wheel width. The rotary nails and the cutting blades rotates and pushes the cut soil backward and it can be utilized as a propellant force to increase the running speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary working machine in which the traveling speed during plowing work is increased to shorten the plowing work time.

[0002]

2. Description of the Related Art Conventionally, a tilling rotary is attached to the rear part of a tractor or a tiller, and this rotary is used for tilling work. However, it is possible to shorten the working time by increasing the traveling speed during the tilling work as much as possible. It is desired to improve work efficiency.

[0003]

However, when the traveling speed is set to a high speed in this way, there is a disadvantage that the higher the speed is, the more easily straws and weeds are entangled in the rotary.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a rotary working machine in which a cutting blade is vertically arranged in front of a tilling rotary equipped on a traveling vehicle, the cutting blade is provided outside a rear wheel width of the traveling vehicle. Arranged to prevent long culm-shaped straws and weeds that are easily entangled in the rotary with a cutting blade in advance to prevent entanglement with the rotary, and when the rotary claw enters the soil and reaches the bottom end during the plowing work, The soil is cut and inverted by the rotary claw, and the soil cut by the cutting blade is carried to the rear as it is to be moved and used as a propulsive force, which accelerates the running speed and rises when the rear wheels of the running vehicle pass. It is possible to satisfactorily cut off the farm field portion with a cutting blade and improve workability.

Further, in a rotary working machine in which a cultivating rotary is connected to and supported by a traveling vehicle through a three-point link mechanism, and a cutting blade is vertically arranged in front of the rotary machine, outside the left and right lower links of the three-point link mechanism. By arranging the cutting blade, even when the rotary portion tilts in the left-right direction during work, the cutting blade arranged outside the lower link minimizes this tilt and stabilizes this work. Can be made.

Further, in a rotary working machine in which a cutting blade is provided in front of a tilling rotary, a front tail wheel is provided immediately before the cutting blade, so that the cutting blade slips into the field soil during traveling. Moreover, the front tail wheel can prevent the crawling, and the cutting blade can always be stably held at the predetermined height position.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of the cultivating rotary section, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of the same, having a top link (2) and a lower link (3) behind a tractor (1) which is a traveling vehicle. A side-drive type tilling rotary device (5) is vertically movable via a three-point link mechanism (4), and a gearbox (7) for interlockingly connecting an input shaft (6) to a PTO shaft of the tractor (1). ) Is arranged substantially in the center of the rotary device (5), the beams (8) are projected to both sides from the side surface of the gear box (7), and the support plates (9) are fixed to the midpoints of the beams (8). The lower link (3) is connected to the front end of the support plate (9), and the front end of the depth frame (10) is pivotally supported at the rear end.
Further, a support stay (12) is interposed between the front side of the support plate (9) and the mast (11), and the top link (2) is connected to the front end of the mast (11).

An upper part of the chain case (13) and an upper part of the side support (14) are fixed to the outer end of the beam (8), and a rotary (15) is provided between the lower part of the chain case (13) and the lower part of the side support (14). Tillage shaft (1
6) is laid horizontally, and a large number of rotary claws (17) composed of nata claws are radially planted on the tiller claw shaft (16) in a side view, and the rotary claw (17) above the rotary locus A is rotated above the rotary claw (17). Cover with cover (18) and cover side covers (1
9) and a rear cover (20) is connected to the rear end of the rotary cover (18). Then, the plowing shaft (16) is driven from the input shaft (6) through the gear in the gear box (7), the transmission shaft in the beam (8), the sprocket in the chain case (13), and the chain. The rotary claws (17) are rotated to perform plowing.

A plate (21) is fixedly provided in front of the support plate (9) and the inner side surfaces of the upper portions of the chain case (13) and the side support (14), and the support rod is provided at the front end of the plate (21). (22) is laid horizontally, the mounting plate (23) is fixed to the supporting rod (22) in a positionally adjustable manner, and the cutting blade (24) is mounted on the mounting plate (23).
The upper part of is fixed by adjusting bolts (25) so that its mounting height can be adjusted. Although four cutting blades (24) are attached in the present embodiment, the number of the cutting blades (24) to be attached is not limited. If too small, the speed-up effect is small, and conversely if too many, Soil is pushed forward in cultivated land, and straw is pushed forward in fields with a lot of straw, which is not desirable because it creates resistance, but 4 to 6 is an appropriate number, but depending on the size of the tractor, Since the width is different and the action is different depending on the type of the rotary pawl, the cutting blades (24) are arranged every few blades (two blades in this embodiment).

Further, the attachment arm (27) of the front tail wheel (26) is supported on the attachment plate (23) through the adjustment bolt (28) so that the attachment height can be adjusted, and the left and right outermost cutting blades (24). ) The front tail wheel (26) is arranged immediately before the position (), and when the cutting blade (24) is in the state of slipping into the field, the front tail wheel (26) can be pressed to prevent this slip-in. It is configured to do.

As shown in FIG. 4, an upper portion (24a) of the cutting blade (24) is formed in a straight line, and a plurality of mounting holes (29) for the bolts (25) are vertically opened on its side surface. Then, the height is adjusted with bolts (25), pins or the like in alignment with the mounting holes opened in the mounting plate (23) and fixed. And a cutting blade (2
The lower portion (24b) of 4) is curved rearward so that the lower portion (24b) faces the front part of the rotation locus A of the rotary pawl (17). That is, the lower part (24b) of the cutting blade (24) is arranged so as to overlap the front part of the rotation locus A in a side view, and the lower end of the cutting blade (24) is the lower end of the rotation locus A of the rotary claw (17). It is placed a little more floating.

In front view, the cutting blade (24) is arranged between the rotary claws (17) and the rotary claw (17), and the cutting blade (24) is rotated when the tilling claw shaft (16) is rotated.
And the rotary pawl (17) are arranged so as not to interfere with each other, and the interval between the cutting blade (24) and the rotary pawl (17) is narrowed so as to prevent residual cultivation. However, the rotary claw (1
7) and the rotary claw (17) between the cutting blade (24)
It is not necessary to provide the space, and as described above, the intervals are appropriately set so as to prevent the plowing resistance.

A partition plate (30) is arranged between the rear portion of the cutting blade (24) and the rotary cover (18), and the partition plate (30) is provided on the inner peripheral surface of the front end of the rotary cover (18).
The partition plate (30) is formed in a triangular shape, and the upper side (30a) is a rotary cover (18).
The front side (30b) matches the shape of the back surface of the cutting blade (24), and the rear side (30c) has an arc shape to guide straws and the like downward according to the shape of the inner surface of the blade. I am trying. And the upper end (30d) of the partition plate (30)
Is higher than the upper end of the rotary locus A of the rotary pawl (17), and is a cutting angle formed by the rear side (30c) of the partition plate (30), that is, a tangent line between the rear side (30c) and the rotary locus A. The angle θ formed by and is made as small as possible. The width (plate thickness) (T) of the partition plate (30) is formed smaller than the blade width (t) of the cutting blade (24) (T <t) so that straws, weeds and the like can be cut by the cutting blade (24). I try not to get entangled in.

Further, each cutting blade (24) is arranged outside the wheel width extension line of the rear wheel (31) of the tractor (1), and each cutting blade (24) is detected from the passing trace of the rear wheel (31).
Is provided so that the swelling portion of the field scene swelled by the rear wheel (31) is broken down by each cutting blade (24). Further, in this case, the rear wheel (31) and the cutting blade (24) can be wrapped in the front-rear direction in a side view, and the front-rear length of the working machine can be reduced.

Furthermore, each cutting blade (24) is arranged outside the width between the links (3) of the left and right lower links (3),
When the rotary device (5) is tilted in the left-right direction,
The rotary device (5) is configured to minimize the lateral tilt by the rush resistance of the cutting blade (24) that is rushed into the field.

As shown in FIG. 5, the cutting blade (24)
When the lower part of the cutting blade is formed on the rearwardly descending inclined portion (24c), the chisel (32) is attached to the lower end of the blade (24) at a substantially right angle. Two
When 4c) is lifted by the resistance of the soil, the chisel (32) is made to cancel each other by the action of biting the soil to prevent the lift.

As described above, the lower part of the cutting blade (24) is located at the front rotation locus A of the rotary claw (17) of the rotary device (5).
The partition plate (30) is disposed so as to face the inside and between the rear surface of the cutting blade (24) and the inner surface of the rotary cover (18), so that the rotary claw (17) goes into the soil during the tilling work. When entering and reaching the lowermost end, the soil cut by the rotary claw (17) and the cutting blade (30) can be rotated backward and acted as a pushing propulsion force, and the forward speed can be increased. When the rotary pawl (17) rotates rearward and upward from the lowermost end, the cutting blade (30)
There is no so, the cut soil is inverted and stirred,
Even if straws, weeds, etc. entwined with the rotary claw (17) are lifted upward, they are dropped by the partition plate (30) or shredded by the partition plate (30) and the rotary claw (17), and the cutting blade ( 24) Straws and weeds do not get entangled or accumulated, and the lifted earth mass is separated by the partition plate (30).
It will be crushed and the tilling performance will be improved.

[0018]

As is apparent from the above-described embodiments, the present invention is applicable to a rotary working machine in which a cutting blade (24) is vertically arranged in front of a tilling rotary (15) mounted on a traveling vehicle (1). Since the cutting blade (24) is arranged outside the width of the rear wheel (31) of the car (1), the cutting blade (24) can remove straw and weeds against the rotary (15) even during high-speed plowing work. Since the entanglement is satisfactorily prevented, the field portion swelled up by the passage of the rear wheel (31) of the traveling vehicle (1) is satisfactorily cut by the cutting blade (24), and this workability can be improved.

Further, the tiller rotary (15) is connected to and supported by the traveling vehicle (1) through the three-point link mechanism (4), and the cutting blade (24) is vertically arranged in front of the rotary (15). In the rotary working machine, since the cutting blade (24) is arranged outside the left and right lower links (3) of the three-point link mechanism (4), when the rotary portion tilts in the left-right direction during work. Also, the cutting blade (24) arranged outside the lower link (3) can suppress this inclination to a minimum and make this work stable and favorable.

Further, in the rotary working machine in which the cutting blade (24) is arranged in front of the tilling rotary (15), the front tail wheel (26) is arranged immediately before the cutting blade (24). Even when the cutting blade (24) gets into the soil during traveling, the front tail wheel (26) can prevent the cutting blade from slipping into the soil and keep the cutting blade (24) stably at a predetermined height position at all times. It has remarkable effects such as good plowing work.

[Brief description of drawings]

FIG. 1 is a side view of a rotary tillage section.

FIG. 2 is an explanatory plan view of a cultivating rotary portion.

FIG. 3 is a front explanatory view of a cultivating rotary portion.

FIG. 4 is a side view of a cutting blade.

FIG. 5 is a side view of a cutting blade.

[Explanation of symbols]

 (1) Tractor (traveling vehicle) (3) Lower link (15) Rotary (24) Cutting blade (26) Front tail wheel (31) Rear wheel

 ─────────────────────────────────────────────────── ─── 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 (3)

[Claims] 1. A rotary working machine in which a cutting blade is vertically arranged in front of a tilling rotary equipped on a traveling vehicle, wherein the cutting blade is arranged outside a rear wheel width of the traveling vehicle. And a rotary working machine. 2. A rotary working machine for connecting and supporting a cultivating rotary to a traveling vehicle through a three-point link mechanism and vertically arranging a cutting blade in front of the rotary, on the outside of the left and right lower links of the three-point link mechanism. A rotary working machine characterized in that a cutting blade is arranged. 3. A rotary working machine in which a cutting blade is disposed in front of a tilling rotary, wherein a front tail wheel is arranged immediately before the cutting blade.