JP3943401B2 - Rotary tillage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary tiller capable of mounting a work machine that performs work on a farm field.
[0002]
[Prior art and problems to be solved by the invention]
2. Description of the Related Art Conventionally, there has been known a rotary tiller device in which an upper portion of a rotary tiller is covered with a main cover, and a rear cover for leveling the tilled soil is provided behind the main cover so as to be rotatable up and down. The farm is cultivated by connecting the tractor and running the tractor.
[0003]
On the other hand, the above rotary tillers include models that can be equipped with working machines for farm fields such as subsoilers for crushing tillers and nozzles for fertilizing or applying medicine in the soil. It is possible to perform work on the farm field. However, in the above rotary tiller, the work implement is attached to a tool bar disposed behind the rear cover, so that the work implement works on the field after the leveling of the tilled soil by the rear cover, and particularly in the soil as described above. In the case of a work implement inserted into the tractor, it is inserted into the field after leveling with the rear cover. There are drawbacks such as difficulty in insertion.
[0004]
[Means for Solving the Problems]
The rotary tiller of the present invention for solving the above-mentioned problems covers the upper part of the rotary rotary 8 with the main cover 9, and the rear cover 12 for leveling the tilled soil behind the main cover 9 can be rotated up and down. In the rotary tiller provided, a partition body 17 is provided at the rear end of the main cover 9 to prevent leakage of scattered soil during tillage, and a left and right support frame 21 is provided horizontally at the front position of the rear cover 12, and On the support rod 21, work machines 22 and 24 which are plowed by the rotary 8 between the partition member 17 and the rear cover 12 and are inserted into the field in the scattered soil discharged to the rear are attached to the support rod 21. mounting as supported freely changed in the horizontal direction, the provided vertically rotatably partitioning member 17 between the main cover 9 and the rear cover 12, further, the rear cover 1 and the partition member 17 Linked by interlocking mechanism and, in take turns posture A close to the rotary 8 side as the rear cover 12 is in the upright state around has a tilling soil partition body 17 is tilling by rotary 8, also the rear cover 12 is inclined state Then, the first feature is that the partitioning body 17 is configured so that the posture can be switched so as to be in a discharging posture B in which the tilled soil is discharged to the rear cover 12 side .
[0005]
The second feature is that the support rod 21 is provided between the left and right side covers 11 that cover the sides of the rotary 8.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 are a side view and a plan view of a rotary tiller according to the present invention. The rotary tiller is a conventionally known one that is connected to a tractor and performs a field tilling operation as the tractor travels. From the gear case 1 to which the PTO power is input from the tractor side via the input shaft 2, the pipe frame 3. Are protruded to the left and right, and a chain case 4 is integrally attached to one (left) outer end of the pipe frame 3 and a side frame 6 is integrally attached to the other (right) outer end. It is extended to.
[0007]
A claw shaft is rotatably supported between the side frame 6 and the lower part of the chain case 4, and a plurality of tilling claws 7 for plowing a field are attached to the claw shaft to constitute a rotary 8. Thus, the driving force input to the gear case 1 is input to the claw shaft through the chain case 4, and the claw shaft is rotationally driven so that the rotary 8 (cultivation claw 7) performs the cultivation work in the field. Yes.
[0008]
The rotary 8 has an upper side supported by a main cover 9 supported between the chain case 4 and the side frame 6, and a side upper side provided by side covers 11 provided on the left and right sides of the main cover 9. A rear cover 12 is supported on the side so as to be pivotable up and down and is disposed behind the main cover 9.
[0009]
That is, the rotary 8 is covered at the upper side, the side, and the rear by the rotary cover 13 including the main cover 9, the side cover 11, the rear cover 12, and the like. At this time, brackets 14 are attached to the left and right sides of the rear cover 12 so as to protrude upward. The bracket 14 is connected to the pipe frame 3 via the rod 16, and the rear cover 12 is suspended on the pipe frame 3 side. .
[0010]
With the above structure, the rear cover 12 is rotated by its own weight so that the rear end is in contact with the farm scene, and changes its posture, and the rear cover stands up with respect to the farm scene as the tillage depth becomes shallower. The (acute angle side angle) approaches 90 °, and as the tillage depth increases, the field scene falls down and the angle of the rear cover (acute angle side) with respect to the field scene approaches 0 °.
[0011]
1 shows a state during shallow plowing where the tilling depth is relatively shallow, and FIG. 3 shows a state during deep plowing where the tilling depth is relatively deep, and the tilling depth changes as the rear cover 12 rotates. Even in this case, the rear cover 12 makes it possible to level the cultivated soil by the rotary 8, that is, deep plowing work and shallow plowing work by the rotary cultivating apparatus are possible.
[0012]
The side cover 11 on the chain case 4 side is disposed outside the chain case 4, that is, the end of the rear cover 12 on the chain case 4 side extends to the position of the outer surface of the chain case. As a result, the rear cover 12 leveles the trace that the chain case 4 forms on the field scene, and erases the trace of the chain case 4.
[0013]
Further, a curled leveling plate 12a is attached to the rear end of the rear cover 12, and the leveling plate 12a pulls the soil of the convex portion at the start of tilling to the end of tilling, and the soil is removed at the end of tilling. When the rotary tiller is raised, it is backfilled into a recess formed in the field to improve the leveling. At this time, since the ground contact area of the rear cover 12 is increased by the leveling plate 12a, the accuracy of the automatic control based on the swinging of the rear cover 12 along the field scene, for example, the raising / lowering control of the rotary tiller, etc. is improved.
[0014]
On the other hand, a plate-like partition 17 is provided between the left and right side covers 11 between the main cover 9 and the rear cover 12, and the front end of the partition 17 rotates around the rear end of the main cover 9. It is supported and attached movably. A bracket 18 is projected from the upper surface of the partition 17 corresponding to the bracket 14 of the rear cover 12, and the bracket 18 and the bracket 14 of the rear cover 12 are connected via a connecting rod 19. .
[0015]
As a result, the partition 17 rotates in conjunction with the connecting rod 19 in accordance with the rotation of the rear cover 12, and in the shallow tillage shown in FIG. At the time of deep plowing shown in FIG. 3, the posture is switched so as to form a discharge posture B that is in a lying state with respect to the field scene and separates from the rotary 8.
[0016]
Due to the above structure, during shallow plowing, the partition body 17 is in the swinging posture A and close to the rotary 8 side, and the rear cover 12 is in the standing plowing posture, and part of the cultivated soil cultivated by the rotary 8 is directed to the rotary 8. It is carried forward between the adjacent partition 17 and the rotary 8 and between the rotary 8 and the main cover 12.
[0017]
As a result, the amount of swollen soil during shallow plowing that generates relatively little cultivated soil is increased, and when the cultivated soil is swollen, the clumps are crushed to improve soil crushing characteristics. 12, the leveling performance is improved, and stable shallow tillage work can be performed.
[0018]
On the other hand, at the time of the deep plowing, the partition body 17 is in the discharge posture B and the rear cover 12 is in the lying down deep plowing posture, and the tilled soil generated more than the shallow plowing work is carried forward by the partition body 17. Without being discharged, the cultivated soil discharged is leveled by the rear cover 12. At this time, the cultivated soil scattered by the partitioning member 17 during the cultivation does not leak from between the rear cover 12 and the main cover 9.
[0019]
For this reason, the increase of the carrying soil at the time of deep tillage work is prevented, the load on the tractor body due to the resistance of the carry soil is reduced, and stable deep tillage work can be performed. As described above, the partition body 17 is provided so as to be rotatable and the posture can be switched, so that the range of tillage depth at which smooth tillage work can be performed is expanded, and a deeper tillage depth compared to paddy fields. It is possible to easily perform the cultivation work even in the field where the cultivation work is required.
[0020]
In the case of the present embodiment, the rear cover 12 and the partitioning body 17 are connected and interlocked by an interlocking mechanism including both brackets 14 and 18 and a connecting rod 19, and the partitioning body 17 is proportional to the rotation angle of the rear cover 12. Since it can be rotated steplessly (freely), the partition 17 automatically rotates steplessly so that the amount of cultivated soil discharged (and the amount of cultivated soil carried) according to the tillage depth is reached. Change the attitude to the field.
[0021]
That is, the partition body 17 automatically follows the rotation of the rear cover 12, that is, the tilling depth, and can be switched to the swinging posture A during shallow tillage work and to the discharge posture B during deep tillage work. On the other hand, the rear cover 12 is rotated to follow the rotation of the rear cover 12 so that the amount of tillage discharged to the rear cover 12 side becomes appropriate, and the posture of the rear cover 12 and the partitioning body 17 can be easily switched. The operation mistake of the attitude | position switching of the partition 17 is prevented.
[0022]
On the other hand, a support rod 21 in the left-right direction is horizontally provided between the side covers 11 so as to be positioned between the rear cover 12 and the main cover 9 above the partition body 17. Are provided with a plurality of mounting jigs 23 for working machines to be inserted into the soil such as the subsoiler 22 for cultivating the tilling pad so as to be slidable left and right.
[0023]
Accordingly, for example, as shown in FIGS. 1 to 3, when the subsoiler 22 is attached to the mounting jig 23, the subsoiler 22 is in a state before being leveled by the rear cover 12, that is, plowed by the rotary 8 and rearward. Since it is inserted into the field in the scattered soil being discharged, the load on the tractor body can be reduced without greatly receiving the resistance of the cultivated soil, and stable cultivating work can be performed.
[0024]
Then, by attaching the working machine to the soil to the support rod 21 as described above, the working machine can be easily inserted into the field without being greatly subjected to the resistance of the tilled soil in the scattered soil being discharged backward. Therefore, even when the strength of the work machine is small, the work machine can be easily inserted into the field, and as shown in FIGS. 4 and 5, the work machine for performing fertilization and drug application. Even if the nozzle 24 to be provided is provided on the back surface of the subsoiler 22, the nozzle 24 (low strength) can be easily inserted into the field, and fertilization and medicine can be easily performed.
[0025]
For this reason, as shown in FIG. 5, a plurality of nozzles 24 are provided so as to have different depths of insertion into the field, and fertilizers having different days of fertilization depending on the depth of insertion into the field are discharged from each nozzle 24. It is possible to easily perform the fertilization at the same time. In this case, the fertilization work and the additional fertilization work can be reduced, the total amount of fertilization can be reduced, and in addition to the improvement of work efficiency, there is an effect in preventing environmental destruction.
[0026]
In addition, since the support rod 21 is provided horizontally across the side covers 11 and the attachment jig 23 is slidably attached to the support rod 21, the nozzle 24 can be adjusted by adjusting the position of the attachment jig 23. The position of can be changed and adjusted in accordance with the crop position (the position of the cocoon) to be planted in the next step.
[0027]
Moreover, since the attachment range of the work implement is almost the full width of the rotary tiller, the subsoiler 22 may be provided on the rear extension line of the chain case 4 and the remaining tillage portion behind the chain case 4 may be plowed by the subsoiler 22. it can. At this time, since the support rod 21 is attached to the both side covers 11 side, the attachment structure is simple.
[0028]
On the other hand, when the nozzle 24 is attached, a fertilizer for fertilization is applied to a conventionally known main tool bar 27 which is attached to the pipe frame 3 so as to be swingable and is supported by an arm 26 protruding rearward and extending in the left-right direction. A tank 28 for containing a medicine for medicine can be attached.
[0029]
In the present embodiment, as shown in FIG. 6, an output shaft 29 for taking out driving force is projected from the rear of the gear case 1, and a pump for fertilizing and applying medicine is driven by the driving force from the output shaft 29. It can be a driving force. Thereby, the apparatus which requires a drive source other than the said pump can be attached to the rotary tiller side, and can be driven easily.
[0030]
In particular, the gear case 1 rotates the output shaft 29 integrally with the input shaft 2, and a clutch mechanism 35 is provided between the input shaft 2 and the transmission shaft 30 for driving force to the chain case 4 in the pipe frame 3. By having the structure and cutting the driving force to the transmission shaft 30 by the clutch mechanism 35, the driving force can be output from the output shaft 29 in a state where the rotary 8 is stopped. Thereby, when driving a car wash machine etc. with the driving force from an output shaft, the rotary 8 can be stopped.
[0031]
Furthermore, in the present embodiment, the arm 26 is suspended from the top mast 33 by an expansion / contraction rod 32 that is expanded and contracted by an electric motor 31, and the swing angle of the arm 26 can be adjusted by driving the electric motor 31. It has become. This makes it possible to easily adjust the posture of the tank 28 attached to the main tool bar 27 or a working machine such as a molding machine or a ridger.
[0032]
【The invention's effect】
According to the configuration of the present invention configured as described above, since the work implement is supported and attached to the support rod between the partition plate and the rear cover, the work implement is plowed by the rotary 8 and is being discharged rearward. It is possible to work on the field in the scattered soil. For this reason, in particular, in the case of a work machine inserted into the soil such as a subsoiler for cultivating the cultivator or a nozzle for fertilizing or applying medicine in the soil, The work implement is inserted into the field without greatly receiving the resistance of the tilling soil in the scattered soil being discharged backward, allowing the work implement to work smoothly and reducing the load on the tractor body There is an advantage.
[0033]
In addition, when mounting the support rod, the support rod is provided across both side covers to simplify the mounting structure of the support rod, and the work machine mounting range is almost the full width of the rotary tillage device. It is also possible to provide a subsoiler as a machine on the rear extension line of the chain case and to plow the remaining plowing portion behind the chain case with the subsoiler.
[0034]
Alternatively, by providing a plurality of nozzles as work implements in the left-right direction and adjusting the insertion depth of each nozzle, it becomes possible to simultaneously apply fertilizers with different days of fertilization, and by adjusting the attachment position of the work implement, The position of 24 can be changed and adjusted according to the position of the crop planted (the position of the cocoon) in the next step.
[0035]
Further, by providing a rotatable partition between the main cover and the rear cover, the cultivated soil is swung forward by the partition by switching the partition to the swivel position during shallow plowing, and the soil breaking performance is improved. At the same time, leveling performance is improved by filling the unevenness of the field with the surrounding soil, and switching the partitioning body to the discharging position during deep plowing prevents the tilled soil from being moved forward more than necessary. Since it is discharged, the load on the tractor body can be reduced, smooth tilling work can be performed, and work can be easily performed on the farm field by the working machine in the above state.
[Brief description of the drawings]
FIG. 1 is a side view of a rotary tiller during shallow tillage work.
FIG. 2 is a plan view of a rotary tiller.
FIG. 3 is a side view of a rotary tiller during deep plowing work.
FIG. 4 is a side view of a rotary tiller with a nozzle attached to the back of the subsoiler.
FIG. 5 is a side view of a rotary tiller in which a plurality of nozzles having different insertion depths in the field are attached to the back surface of the subsoiler.
FIG. 6 is a plan sectional view of a main part of the gear case.
[Explanation of symbols]
8 Rotary 9 Main cover 11 Side cover 12 Rear cover 17 Partition 21 Support rod 22 Subsoiler (work machine)
24 nozzle (work machine)
A Carrying posture B Discharging posture

Claims (2)

In the rotary tiller device in which the upper portion of the rotary rotary (8) is covered with a main cover (9), and a rear cover (12) for leveling the tillable soil is provided behind the main cover (9) so as to be rotatable up and down. A partition body (17) is provided at the rear end of the main cover (9) to prevent the scattered soil from leaking out during tillage, and a horizontal support frame (21) is provided laterally at the front position of the rear cover (12). The support rod (21) is inserted between the partition (17) and the rear cover (12) by the rotary (8) and inserted into the field in the scattered soil discharged backward. (22) and (24) are mounted so that their mounting positions are supported so as to be changeable in the left-right direction, and the partition body (17) is pivotable up and down between the main cover (9) and the rear cover (12). And the partition ( 7) is connected to the rear cover (12) by an interlocking mechanism, and when the rear cover (12) is in the upright state, the partition (17) is moved to the rotary (8) side so as to carry the cultivated soil plowed by the rotary (8). The position can be freely switched so that it is in a close-around carrying position (A), and when the rear cover (12) is in a lying state, the partition (17) is in a discharging position (B) that discharges the tilled soil to the rear cover (12). the rotary tiller.   The rotary tiller according to claim 1, wherein the support rod (21) is provided between the left and right side covers (11) covering the sides of the rotary (8).

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