JPH08126403A - Tilling rotary working machine - Google Patents

Abstract

PURPOSE: To provide a tilling rotary working machine of a high traveling speed, capable of preventing the shaft of a tilling claw from the wrapping of straw folks. CONSTITUTION: This tilling rotary working machine equipped with a stationary blade (24) thrusting a tip thereof into the soil in the front part in a locus (L) of a mobile claw of a tilling rotary furnished in a traveling vehicle and also a treating blade (49) for cutting straw folks at the upper direction of the stationary blade (24) in the locus (L) of the claw, comprises spanning a linear member (50) horizontally in one unit almost parallel to the shaft direction of a plowing claw shaft (17) of the tilling rotary with a gap (S).

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 traveling speed of a traveling vehicle during tilling work is increased to shorten the tilling work time by the tilling rotary.

[0002]

2. Description of the Related Art In such a tilling operation, when only the traveling speed is high, the tilling pitch becomes large and the remaining tillage also increases. Therefore, there is a means for increasing the rotation speed of the tilling rotary according to the traveling speed. However, in this case, there was a drawback that the plowing load was increased to increase the required power. Therefore, there is a means for reducing the residual tillage by increasing the number of claws per one rotation of the claw shaft according to the traveling speed while keeping the number of rotations of the tilling rotary at a constant number of rotations.

[0003]

However, in the case of such high speed plowing work, the higher the speed, the larger the plowing work amount per one rotation of the plowing rotary, and the amount of straw scraps caught in the rotary. In the state of increasing, there was a problem that a large amount of straw was wrapped around the tillage claw shaft of the tillage rotary.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the front part in the moving claw locus of the tilling rotary equipped on the traveling vehicle is provided.
In a rotary working machine in which a fixed blade that inserts the blade tip into the soil is arranged, and a processing blade that cuts straw debris is arranged above the fixed blade in the claw path, in the axial direction with respect to the tilling claw shaft of the rotary tiller. The rotary work machine, which is in parallel with a gap and has a linear body horizontally suspended and becomes more floating as the traveling speed becomes faster, is suppressed by the diving force of the fixed blade that plunges into the soil to cultivate the plowing depth. The length of the straw is kept almost constant, and a large amount of straw debris that is caught in the path of the claw of the tillage rotary is cut short by the processing blade to prevent it from wrapping around the tillage claw shaft or the fixed blade. Even when it becomes a state in which it is wrapped around the tiller shaft, the gap between the tiller shaft and the linear body is sandwiched so that the straw is completely wrapped and the gap is prevented. It is easy to remove and the working time of this high speed rotary work is short. And it is obtained so as to enable cost reduction.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of a rotary tillage part, FIG. 2 is a side view of the whole, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a rotary tiller, and FIG. 5 is a floating explanatory view of a rear cover. In the figure, (1) is a tractor which is a traveling vehicle having front and rear wheels (2) and (3), and the steering wheel (5) in front of the driver's seat (4) changes the direction of the front wheel (2) to change the traveling course. It is configured to change. Note that (6a) is the main shift lever, (6b) is the sub shift lever, and (6c) is P
It is a TO shift lever.

Further, the lower link (7) is attached to the tractor (1).
Side-drive type tillage rotary working machine (8)
The gearbox (9) is arranged in the center, and the input shaft (9) is attached to the PTO shaft (10) of the tractor (1) through the drive shaft (10a) with a universal joint.
Power is transmitted by connecting a). Beams (11) are projected to both sides from the side surface of the gear box (9), support plates (12) are fixedly installed in the middle of each of the beams (11), and a lower link is provided at a front end of the support plate (12). A pin that pivotally connects (7) is projected, and the front end of the depth frame (13) is pivotally supported at the rear end of the mast (1).
The front end of 4) forms the pivotal connection of the top link (15).

As shown in FIG. 7, the upper part of the chain case (16) is fixedly installed at the outer end of the beam (11), and the tillage claw shaft (17) is horizontally mounted on the lower part of the chain case (16).
A large number of cultivating claws (18) made of nata claws are radially planted on the cultivating claw shaft (17) in a side view, and a rotary cover (19) is provided above the rotation locus of the cultivating claw (18).
, And both sides are covered by side covers (20). Then, the tilling claw shaft (17) is driven via a gear inside the gear box (9), a transmission shaft inside the beam (11), a sprocket and a chain inside the chain case (16), and the tilling claw (18) ... I am trying to cultivate by rotating.

As shown in FIG. 8, the beam (1
1) A first plate (21a) is fixedly provided in front of the plate (21a), and a supporting rod (22) is horizontally mounted on a front end of the plate (21a) via a second plate (21b) and attached to the supporting rod (22). The plate (23) is fixed, and the mounting plate (23)
The upper part of the cutting blade (24) which is a fixed blade is attached to the bolt (23
4 pieces are attached in the left-right width direction via a). Further, the middle part of the cutting blade (24) is curved rearward so that this middle part is exposed to the front part of the rotary claw locus (L) of the tilling claw (18), and the lower tip side of the middle is inclined forward. And has a receding angle (α). That is, in a side view, the middle portion of the cutting blade (24) is arranged so as to overlap with the front portion of the rotary claw locus (L) of the tilling claw (18), and the cutting blade (24) and the tilling claw (18) are arranged. The interval between the two is narrowed to prevent residual plowing, and the work machine (8) is prevented from being lifted up by the plowing resistance during the plowing work by the underground plunging action of the cutting blade (24). There is. However, the number of cutting blades (24) to be attached is not limited, and may be appropriately spaced so as not to cause tilling resistance.

Further, a first steel plate rear cover (26) is vertically swingably connected to the rear end of the rotary cover (19) on the upper side of the tilling claw (18) via a first fulcrum shaft (25), 1 The front end of the second rear cover (27) made of an elastic material such as synthetic resin or rubber is fixed to the rear end of the rear cover (26), and the front end of the steel plate third rear cover (28) is fixed to the rear end of the second rear cover (27). , A second fulcrum shaft (29) at the rear end of the first rear cover (26) and a third fulcrum shaft (30) at the front end of the third rear cover (28) are connected by a pair of left and right links (31) (31), Third fulcrum axis (3
0) is provided substantially coaxially with a fourth fulcrum shaft (32), the lower end of the first suspension rod (33) is connected to the fourth fulcrum shaft (32),
The lower ends of the pair of left and right second suspension rods (35) are connected to the fifth fulcrum shaft (34) at the rear end of the third rear cover (28), and the first and second support members (36) of the first rear cover (26) are connected to each other. Second
The upper ends of the suspension rods (33) (35) are attached so as to be able to move up and down, and the suspension rods (33) (35) and the third rear cover (28) form a triangle in a side view, and the second, third and third suspension covers are formed. A side view triangle is formed by a line connecting the five fulcrum shafts (29), (30) and (34), and the third rear cover (28) is centered on the second fulcrum shaft (29) or the third fulcrum shaft (30). Is moved upward in the directions of arrows (A) and (B), and the cover (28) uses the second fulcrum shaft (29) and the suspension rod (33) (35) connecting portion of the support (36) as a fulcrum. Also, the third rear cover (28) whose forward movement is restricted by the downward protrusion of each rod (33) (35) by the operation of the lever mechanism of each rod (33) (35) is moved backward in the direction of arrow (C). Move it upwards, and as shown in FIG.
Floating operation is performed in which both sides of the rear cover (28) move back and forth in the direction of arrow (D) in plan view. Also,
A pair of left and right gas dampers (3) having a substantially constant pressure between the fifth fulcrum shaft (34) and the support (36) of the first rear cover (26).
Even if the tractor (1) tilts to the left or right, the third rear cover (28) is supported by a gas damper (37) that is connected to the third rear cover (7) to obtain a substantially constant spring constant for the entire stroke and to form a large stroke. The third rear cover (28) is configured so that the tilling surface can be leveled by evenly pressing the left and right sides. The gas damper (37)
Instead of this, an oil damper or a multiple coil spring may be used.

Also, the upper end side of the suspension rods (33) (35) is loosely fitted and inserted into the bearing bodies (38) of the support bodies (36) so as to abut against the upper surface side of the bearing bodies (38). (3
3) Pins (35) prevent the rods (33) (35) from being pulled out downward, and prevent the movement of the third rear cover (28) in the direction opposite to the arrows (A) (B) (C). The lower ends of the pair of left and right rods (40) (40) wound with the springs (39) (39) are attached to the first rear cover (2).
6) Connected to the upper surface, the upper end side of the rod (40) is slidably attached to the support (41) of the rotary cover (19), and the first rear cover (26) is pressed by the spring (39). are doing.

The rake support (42) is detachably fixed to the upper surface of the third rear cover (28), and the rake (43) fixed to the support (42) is extended to the rear of the third rear cover (28). I'm putting it out.

Further, as shown in FIG. 6, the shaft (44) of the support (36) for mounting the upper end of the second suspension rod (35).
The upper end of the gas damper (37) is connected to the second suspension rod (35) and the gas damper (37) as close as possible to each other, and the depth frame (13) is provided.
A pair of left and right tail wheels (46) (46) is attached to the rear end via a support frame (45), and left and right tail wheels (46) (46)
The rake (43) is arranged between them.

Further, the rear covers (26) (27)
One first suspension rod (3
3) is positioned, the left and right rods (40) and (40) are arranged on the left and right sides of the first suspension rod (33), and the left and right rods (40) and (40) are further arranged on the left and right outer sides of two sets of left and right pairs. Two
The suspension rod (35) and the gas damper (37) are arranged, and the left and right links (31) and (31) are arranged further on the left and right outer sides of the second suspension rod (35) and the gas damper (37). The left and right side ends of the three rear covers (26) and (27) are connected by the left and right links (31) and (31).

As shown in FIG. 7, the plowing claw shaft (17) is also provided.
The transmission shaft in the beam (11) and the chain case (1
6) The drive force input to the input shaft (9a) is transmitted through the chain in the inside to rotate the plowing pawl (18). The left and right sides of the plowing pawl shaft (17) for expanding the plowing width are provided. The eccentric claws (47) are attached and the left and right eccentric claws (47) are attached.
Plowing claws (18) are attached in multiple rows at approximately equal intervals therebetween.

The plowing pawls (18) are of a holder mounting type, and a plurality of plowing pawls (18) are provided on the same plane in the radial direction with respect to the plowing pawl shaft (17). Four holders (48) are provided in the radial direction at 90 ° intervals on the circumference of the same cross section of (17).

The holder (48) is equipped with a tilling claw (18) made of a naginata-shaped claw, and the tip of the tilling claw (18) is cut or cut, and the tip end thereof is turned right or left. Alternately bent into 1
Holders (48) arranged in a line on the circumference so that the bending directions of the tillers (18) facing each other at 80 ° are the same in the right or left direction.
Two are attached to each.

Further, as shown in FIGS. 7 to 9, opposed plowing pawls (18) (18) mounted on the left and right holders (48).
The base interval (T) is set to a large interval of 5, while the interval (t) that is the tip claw locus (L) clearance is approximately 1 (T: t≈).
5: 1), and in the embodiment, when the turning radius a is about 245 mm, the base interval (T) is 200 mm and the tip claw locus (L) interval (t) is about 40 mm. By opening the interval between the bases to increase the base interval (T) and reducing the number of plowing pawls (18) to be attached, the required power is reduced, and the remaining power for plowing with the same power is reduced to speed. It is configured so that it can be turned to enable high-speed cultivation.

That is, the tilling claw (18) has a large curving width (b) (b≈80 mm) with a large curving width (b) (b≈80 mm) by curving the soil and then scooping the soil so that the tip side is greatly curved laterally. 18a) 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 (18a) pushes 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 by 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 the arrow of 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 claw (18) rotates to the vicinity of the cutting point and the resistance load of the soil becomes small, the soil portion left as residual tillage is crushed from the lateral direction due to the restoring elastic force due to the elastic deformation at the time of driving the claw (18). Then, the crushing effect is further improved, and the cutting soil itself is also subjected to a strain force due to the elastic return force so as to crush the soil into soft and fine soil. In other words, it is possible to reduce the required power by making it possible to perform work that does not leave residual tillage while cultivating in the state where residual tillage remains, with a minimum claw configuration.

In this way, by setting the number of tilling claws (18) of the rotary working machine (7) to about 70% of that of the conventional rotary working machine, for example, high speed tilling which doubles the traveling speed of the conventional rotary working machine can be performed. It makes it possible.

As shown in FIGS. 1 and 7, a partition plate (49) as a processing blade is arranged between the rear portion of the cutting blade (24) and the rotary cover (19). A partition plate (49) is fixedly installed on the back side, and the partition plate (49) and the cover (19) are brought close to each other so as to minimize the distance between the partition plate (49) and the cover (19) such as straw and weeds. It is provided to prevent entry. In addition, a partition plate (4
9) is configured in a substantially triangular shape, the upper side (49a) of which corresponds to the shape of the inner surface of the rotary cover (18), and the front side (49b) of which substantially corresponds to the shape of the back surface of the cutting blade (24). The rear side (49c) is formed into an arcuate blade portion so that the straw and the like are guided downward and the straw is cut at the same time. Then, the upper end (49d) of the partition plate (49) is made higher than the upper end of the rotation locus (L) of the tilling claw (17), and the rear side (49c) of the partition plate (49).
The cut angle formed by the above, that is, the angle (θ) formed by the rear side (49c) and the tangent line of the rotation locus (L) is made as small as possible. In addition, the width (plate thickness) (H) of the partition plate (49) is formed to be slightly smaller (H <h) than the blade width (h) of the cutting blade (24) so that straws, weeds, or the like can cut the cutting blade (2).
It is configured so as to allow good cutting without being entangled with 4).

By the way, of the four holders (48) arranged in one row in the circumference of the side-viewing tillage claw shaft (17) (on the circumference of the same cross section of the claw shaft (17)), one holder in each row (4
An anti-winding rod (50), which is a linear body having substantially the same width as the pawl shaft (17), is fixedly provided on the upper end of the anti-rotation side of 8). (17) is substantially parallel to the axial direction and has a fixed interval (S) with the claw shaft (17) so as to be laterally integrated, and at the same time as the curved rearmost portion (24a) in the middle of the cutting blade (24). Partition plate (49) Rear edge (49
The intersection (E) with the bottom end of c) and the prevention rod (50)
The minimum distance (K) between the rotation locus (F) and the rotation locus (F) is set equal to or larger than the rice stock (50 to 60 mm or larger). And it prevents long straws etc. from being directly wrapped around the outer circumference of the nail shaft (17),
A certain distance (S) is provided between the prevention rod (50) and the pawl shaft (17).
By increasing the winding length of a long straw or the like, the straw shaft is prevented from being wound around the nail shaft (17), and for example, the straw between the prevention rod (50) and the nail shaft (17) is prevented. Even when dust is wrapped around, the gap (S) facilitates removal of the dust and promotes downward discharge through the gap (K) such as straw dust and rice stock.

Although the prevention rod (50) is connected and fixed to the holder (48), it may be fixed to a support plate or the like separately fixed to the claw shaft (17).

The present embodiment is constructed as described above, and conventionally, for example, the number of claws per one rotation of the claw shaft (17) is 1, the claw shaft rotation speed is about 170 rpm, and the vehicle speed is 0.5 m / s. The work to be carried out in step 2 is carried out by setting the number of claws per rotation of the claw shaft (17) to two, the claw shaft rotation speed is approximately 170 rpm, and the vehicle speed is 1
It is carried out under working conditions of up to 1.5 m / s, and the working speed is substantially doubled or more than that of the conventional one, and work efficiency is greatly improved.

When the traveling speed is increased, the higher the traveling speed is, the more the traction resistance of the rotary working machine (8) is increased, and the upslip phenomenon occurs in the tilling rotary. Although the working machine (8) is to be lifted up and raised, the downward force when the cutting blade (24) having the receding angle (α) that penetrates into the soil is moved and the cutting blade (24). The force of pressing the side surface with soil acts as the pulling-out resistance force of the cutting blade (24) to prevent the working machine (8) from rising.

Further, the side of the plowing claw (18) is overlapped with the point of plunging the cutting blade (24) so as to substantially coincide with the point of plunging the soil in the side view, and the cutting blade is used when cutting the soil of the plowing claw (18). The soil can be cut by (24), and the cut soil can be easily cultivated by the plowing claws (18) to reduce the load in the cultivating work.

Further, during the tilling work, among the straw waste caught in the nail locus (L) by the tilling claw (18), the centrifugal force or the rotation of the prevention rod (50) causes the circumferential direction of the nail locus (L). Long straws and the like that are gathered together are cut by the partition plate (49) and discharged downward without wrapping around the cutting blade (24), and uncut straw chips and rice plants are also sufficient. Through the space (K) with the prevention rod (50) having a space, the partition plate (49) smoothly moves along the rear side (49c) of the partition plate and the rear surface of the cutting blade (24) (space (K)).
Is emitted downward without interfering with the claw shaft (1
7) and the cutting blade (24) are prevented from being wrapped with such straw waste. Further, even when a long straw or the like winds around the tillage claw shaft (17), the winding length of the prevention rod (50) is increased so that the long straw or the like can be directly wound around the claw shaft (17). Prevented, even when wrapped (S)
It can be easily removed by inserting a hand or a cutter into the.

FIG. 10 shows a mounting plate fixed to the support rod (22) by rotatably supporting both ends of the support rod (22) on a receiving cylinder (51) fixed to the second plate (21b). The upper base end of the cutting blade (24) is fixed to the (23) via a bolt (52), and the support rod (2) is attached to the receiving cylinder (51).
2) is fixed via a set bolt (53) and a pin (54) so that its rotational position can be adjusted, and the support rod (2)
2) Supporting rod (2) for adjusting handle (55)
2), the mounting attitude of the cutting blade (24) is changed by operating the handle (55) when fixing the support rod (22) to the receiving cylinder (51) by the bolt (53) and the pin (54). The depth of plunge and the plunge angle of the cutting blade (24), the cutting blade (24) and the prevention rod (5).
The minimum distance (K) from the rotation locus (F) of 0) is adjustable.

Further, FIG. 11 shows the partition plate (49).
Is fixed to the inner peripheral surface of the rotary cover (19) at the rear position of the cutting blade (24) on the front end side, while the mounting plate (23) fixed to the support rod (22) has two bolts ( 52) The bolt holes (56) of 52) are opened at three positions, and the cutting blade (24) is fixed to one bolt hole (56) at an appropriate position among these bolt holes (56) with the bolt (52). These bolts (52) and bolt holes (56)
By changing the mounting position of the cutting blade (24) by means of the above, the minimum distance (K1) between the cutting blade (24) and the rotation locus (F) of the prevention rod (50) can be adjusted. .

Further, in FIG. 12, the cutting blade (24) mounted with the two bolts (52) on the mounting plate (23) has three bolt holes (5) for changing the position.
6) is provided so that the minimum distance (K2) between the cutting blade (24) and the rotation locus (F) of the prevention rod (50) can be adjusted,
This structure is configured to promote downward discharge of straw waste carried in the nail path (L) to prevent long straws from being wound around the nail shaft (17) and the cutting blade (24).

[0030]

EFFECTS OF THE INVENTION As is clear from the above embodiments, the present invention provides a fixed blade (for inserting the cutting edge into the soil in the front part of the moving claw locus (L) of the tillage rotary equipped on the traveling vehicle (1)). Two
4) is installed and a processing blade (4) for cutting straw waste
In the rotary working machine in which 9) is arranged above the fixed blade (24) in the claw locus (L), there is a gap (S) substantially parallel to the axial direction of the tilling claw shaft (17) of the tilling rotary. Since the linear body (50) is integrally laid horizontally, the rotary working machine, which is in a floating state as the traveling speed becomes faster, is suppressed by the dive force of the fixed blade (24) that plunges into the soil. ,
The plowing depth can be kept substantially constant, and a large amount of straw waste caught in the claw locus (L) of the tilling rotary is cut short by the processing blade (49), so that the plowing claw shaft (17) and the fixed blade. It is possible to prevent wrapping around (24), and even when a long straw or the like is wrapped around the tilling claw shaft (17), there is a gap (S) between the tilling claw shaft (17) and the linear body (50). ), It can be prevented from completely wrapping the straw waste, and even if it is wrapped, it can be easily removed by the gap (S), and the working time of this high-speed rotary work can be improved. It is possible to achieve remarkable effects such as shortening the cost and reducing the cost.

[Brief description of drawings]

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

FIG. 2 is an overall side view.

FIG. 3 is an overall plan view.

FIG. 4 is a side view of a rotary working machine for tillage.

FIG. 5 is a side view illustrating a rear cover portion.

FIG. 6 is an explanatory plan view of a rear cover portion.

FIG. 7 is a rear view of the rotary tillage section.

FIG. 8 is a front explanatory view of a cutting blade portion.

FIG. 9 is a rear view of the tilling claw portion.

FIG. 10 is a side view of the rotary tillage section.

FIG. 11 is a side view of the rotary tillage section.

FIG. 12 is a side view of the rotary tillage section.

[Explanation of symbols]

 (1) Tractor (traveling vehicle) (17) Tilling claw shaft (24) Cutting blade (fixed blade) (49) Partition plate (processing blade) (50) Winding prevention rod (linear body) (L) Claw path ( S) Interval (gap)

 ─────────────────────────────────────────────────── ─── 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 (1)

[Claims] 1. A fixed blade for plunging a blade tip into the soil is provided at a front part of a moving claw path of a tillage rotary equipped on a traveling vehicle, and a processing blade for cutting straw is fixed blade in the claw path. A rotary working machine arranged in the upper part, characterized in that a linear body is integrally laterally extended substantially parallel to an axis of a tilling claw of a tilling rotary and having a gap therebetween.