JPH08126406A - Tilling rotary working machine - Google Patents

Abstract

PURPOSE: To provide a tilling rotary working machine capable of nearly keeping operation height of a tilling rotary to a nearly definite height and stably keeping a tilling depth and tilling treating ability and shortening operation time by installing a fixed blade in a tilling rotary so as to freely enable longitudinal and vertical control. CONSTITUTION: This tilling rotary working machine is obtained by arranging a fixed blade 24 whose top is protruding into soil in the front in moving claw locus L of a tilling rotary provided in a traveling vehicle and installing the fixed blade 24 in a tilling rotary to freely enable longitudinal and vertical position. Furthermore, sweepback angle α of the fixed blade 24 is formed in a part protruding the fixed blade 24 into soil and is preferably changeably provided.

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 cultivating work, the higher the traveling speed is, the more the drag resistance of the tilling rotary is increased. As a result, the tilling phenomenon is caused in the tilling rotary, and the tilling rotary side is lifted. There were problems such as making the plowing depth shallow. For this reason, there is a means in which a fixed blade that is made to plunge into the soil during traveling is provided in the tilling rotary part to prevent this floating. Also, during high-speed traveling work with the rotary tiller kept at a substantially constant depth, the higher the speed, the greater the plowing load, so the number of plowing pawls installed in the plowing width direction is reduced to prevent an increase in plowing load. There is a means to keep the traveling speed stable.

[0003]

However, when the towing resistance changes due to soil conditions such as dry and wet conditions, unevenness, and mucilage in the field, it also affects the plowing depth and running speed, and stabilizes these conditions. There was a problem that it could not be maintained.

[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.
A rotary working machine provided with a fixed blade that allows the cutting edge to penetrate into the soil.The fixed blade is arranged on the tilling rotary so that the front and rear and vertical positions can be adjusted. And the tilling load also increases, and the tilling depth and tilling treatment capacity of the working machine change, the front and rear and vertical positions of the fixed blades are adjusted to maintain the tilling depth and tilling processing capacity of the working machine in a stable manner. Can be made. Further, by providing a receding angle to the fixed blade and changing and adjusting the receding angle, it is possible to stably maintain the plowing depth and the plowing capacity.

[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 4
I'm wearing it. 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, the middle part of the cutting blade (24) is arranged so as to overlap with the front part of the rotary claw locus (L) of the tilling claw (18) in a side view, and the cutting blade (2)
4) and the tiller claw (18) are made narrower to prevent residual tillage, and the work machine (8) is lifted by the tilling resistance during the tilling work so that the cutting blade (24) is not grounded. It is suppressed by the inrush action. However, cutting blade (24)
The number of attachments is not limited, and may be appropriately spaced so as not to cause tillage 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).
While the base interval (T) of is a large gap of 5, the interval (t) which is the tip claw locus (L) gap is approximately 1 (T: t≈).
5: 1), and in the embodiment, when the rotation radius a is about 245 mm, the base interval (T) is 200 mm and the tip interval (t) is 40 mm.
By opening a small gap, increasing the base interval (T) and reducing the number of plowing pawls (18) to be attached, the required power is reduced, and the remaining power during plowing with the same power is speeded up. It is configured so that it can be turned at high speed for 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 phantom lines in FIGS. 1 and 8, the cutting blade (2
4) Between the rear part of the rotary cover (19) and the partition plate (4
9) is arranged to fix the partition plate (49) to the inner peripheral surface of the front end of the rotary cover (19).
9) is configured in a substantially triangular shape, the upper end of the partition plate (49) is higher than the upper end of the rotation locus (L) of the tilling claw (18), and the width (plate thickness) of the partition plate (30) is The cutting blade (24) is formed to have a width slightly smaller than that of the cutting blade (18) so that straws and weeds carried around by the tilling claw (18) are guided downward along the rear arc surface so that the straw and weeds can be cut off. I try not to get entangled in (24).

By the way, as shown in FIGS. 1 and 8, the cutting blade (24) is mounted on the mounting plate (23) so that the front and rear and vertical positions can be adjusted.
At the tip of the first plate (21a) whose base end is fixedly attached to the second plate (21
The base end of b) is fixed, the mounting plate (23) is fixed to the support rod (22) fixed to the tip of the plate (21b), and the blade (2) for mounting a cutting blade is attached to the plate (23).
The bolt holes (52) of the book bolt (51) are opened at three places, and one of the bolt holes (52) at an appropriate position is used for the cutting blade (24) with the bolt (51). ) Is configured to be fixed. The bolt holes (52) may be installed at two locations or at three or more locations in addition to the three locations.

This embodiment is constructed as described above, and conventionally, for example, the number of claws per one rotation of the claw shaft (17) is one, 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 2 and the claw shaft rotation speed to about 170 rpm and the vehicle speed to 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 such a 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. Then, the working machine (8) is attempted to levitate, but the downward force when the cutting blade (24) having a receding angle (α) that penetrates into the soil moves and the side surface of the cutting blade (24). The force of pressing the soil with soil acts as a pulling-out resistance force of the cutting blade (24) to prevent the working machine (8) from rising.

Further, when the traveling speed is increased while keeping the plowing depth constant, the plowing load also increases, but by reducing the number of plowing pawls (18) mounted in the plowing width direction, the plowing load can be reduced. Of the elastic claw (18) even if the gap (t) is formed between the tip claw trajectories (L) of the tilling claw (18) and remains as residual tillage. It is possible to effectively crush this residual tillage soil portion by the horizontal component force in the lateral direction by the curved portion (18a) and the repulsive force of elastic deformation to eliminate residual tillage. Further, for example, at the position of the interval (t) where it is difficult to crush even with the crushing force of the claws (18), for example, on the traces of the rear wheel (3) or on the crushed soil surface or the raised soil surface near the left and right, the interval (t). By the cutting blade (24) arranged substantially at the center, the soil in the interval (t) portion is cut down in advance before it is tilled by the claws (18), and residual plowing can be eliminated.

In addition, the cutting blade (24) is overlapped with the soil plunging point of the plowing claw (18) so as to substantially coincide with the soil plunging point in a side view, and the cutting blade is used for cutting the soil of the plowing nail (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.

In this way, the working blade (8) is prevented from rising during high-speed traveling by the cutting blade (24) so that a work with a constant plowing depth can be performed at all times, and the plowing load increases at high speeds. By the cutting action of the cutting blade (24) and the reduction of the number of claws, the cutting power can be suppressed to the minimum and the required power can be reduced.

When the towing resistance changes due to the hardness and soil quality of the soil and the plowing depth of the working machine (8) also changes, or the position of plunging the soil by the cutting blade (24) is adjusted back and forth. When necessary, the mounting position of the cutting blade (24) with respect to the mounting plate (23) is changed in the front-back and up-down directions to maintain a constant plowing depth of the working machine (8) and soil by the cutting blade (24). The cut position is adjusted.

FIGS. 10 to 11 show an example of the construction in which the cutting blade (24) is provided so that the mounting angle can be adjusted. The beam (11) is provided with first and second plates (21a) (21).
b) The left and right receiving cylinders (53) are fixed, both ends of the supporting rods (22) are rotatably supported by these left and right receiving cylinders (53), and fixedly attached to the supporting rods (22). Plate (2
The upper base end of the cutting blade (24) is fixed to 3) via a bolt (51), and the support rod (22) is rotated to the receiving cylinder (53) via a set bolt (54) and a pin (55). The support rod (22) is provided with an adjustment handle (56) for rotating the support rod (22) while fixing the movable rod so that the support rod (22) can be rotated. ) Is released from the support rod (22) by operating the handle (56) to change the mounting attitude of the cutting blade (24) to adjust the receding angle (α) of the blade (24). The cutting blade (24) is configured to be capable of adjusting the depth of penetration into the soil and the angle of penetration into the soil. Also in this embodiment, when the lift of the working machine (8) changes at high speed due to soil conditions or the like, the cutting blade (24) is appropriately adjusted by changing the retreat angle (α). It was done like this.

Further, as shown in FIG. 12, a cutting blade (24) is attached to the mounting plate (23) through a fulcrum bolt (51a).
FIG. 4 shows an example of a structure in which the blade is attached so as to be pivotally adjustable. The intermediate side of the cutting blade (24) is connected to the mounting plate (23) via a fulcrum bolt (51a), and a plurality of mounting plates (23) are attached. Adjust the adjustment bolt (5
1b), the upper end side of the cutting blade (24) is coupled and connected, and the mounting position of the cutting blade (24) is changed around the fulcrum bolt (51a) by changing the mounting position of the adjustment bolt (51b), Similar to the above, it is configured to change and adjust the receding angle (α) of 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) In the rotary working machine (8) provided so as to be arranged, the fixed blade (24) is arranged in the tilling rotary (8) so that the front and rear and up and down positions can be adjusted. When the towing resistance of the working machine (8) increases and the plowing load also increases, and the plowing depth and the plowing processing capacity of the working machine (8) change, the fixed blade (2
It is possible to maintain the working height of the working machine (8) substantially constant by adjusting the front and rear and upper and lower positions of 4) to stably maintain the tilling depth and the tilling processing capacity of the working machine (8).

Further, a fixed blade (24) for thrusting the cutting edge into the soil is provided at the front part in the moving claw locus (L) of the tilling rotary (8) equipped on the traveling vehicle (1). In the rotary working machine, a receding angle (α) is formed at the earth rushing part of the fixed blade (24), and the fixed blade (2)
Since the receding angle (α) of 4) is provided so that it can be changed and adjusted, the working machine (8) can also be adjusted by adjusting the receding angle (α).
The working height can be kept substantially constant, and the plowing depth and the plowing treatment capacity of the working machine (8) can be stably maintained, which is a remarkable effect.

[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 illustrating a cutting blade portion.

FIG. 11 is a front explanatory view of a cutting blade portion.

FIG. 12 is a side view of the cutting blade portion.

[Explanation of symbols]

 (1) Tractor (traveling vehicle) (8) Tillage rotary working machine (24) Cutting blade (fixed blade) (L) Claw locus (α) Receding angle

 ─────────────────────────────────────────────────── ─── 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 (2)

[Claims] 1. A rotary working machine provided with a fixed blade for causing a cutting edge to penetrate into the soil at a front portion of a moving claw locus of a tilling rotary equipped on a traveling vehicle. A tilling rotary working machine characterized by being arranged on a tilling rotary in a positionally adjustable manner. 2. A rotary working machine provided with a fixed blade for plunging a blade tip into the soil at a front portion of a moving claw locus of a tillage rotary equipped on a traveling vehicle, wherein the fixed blade plunges into the soil. A cultivating rotary working machine, characterized in that a retreat angle is formed in the portion, and the retreat angle of the fixed blade is changeably adjustable.