JP4856563B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter such as a rice transplanter.

2. Description of the Related Art Conventionally, a planting work machine having a planting unit for planting seedlings in a farm field and a scraping rotor that is driven to rotate and scrapes the field (scraping), and in which the scraping rotor is installed in front of the planting part has become known. In addition, there is known a bone graft simultaneous transplanting machine in which the planting work machine is connected to a traveling machine body, and planting is performed at the same time as the blanking without performing the blanking in advance (see, for example, Patent Document 1).
Japanese Patent No. 3075661

  However, in general, there are many farmers who perform cutting work in advance separately from planting work, and then planting work with a rice planting machine, etc.In this case, the farm field may be roughened by the wheels of the traveling machine during planting work, and the surface layer of the farm field A simple device that can level the ground has been desired.

Transplanter of the present invention for solving the above problems is provided with a planting platform 12 instill seedlings linked圃 park vehicle body 3, in front of the planting unit 12, in conjunction with the traveling speed of the traveling machine body in transplanter digits set ground leveling rotor 13 for field surface layer of ground leveling work by the drive of the rotor shaft 14 which is,
The leveling rotor 13 is attached so that a plurality of plate-shaped leveling members 37 and a connecting member 38 for connecting the leveling members at intervals in the circumferential direction are integrally formed of resin and integrally rotated on the rotor shaft 14. is Rutotomoni, the ground leveling the circumferential spacing between the members, with at 1.5 to 2.5 times the peripheral speed relative to the speed of the traveling machine body 3 to rotate driving the ground leveling rotor 13, from the planting depth When the ground surface is shallow, the running trajectory α of the predetermined leveling member 37a and the running trajectory β of the leveling member 37b immediately before the leveling member 37a intersect in the vicinity of the field surface in a side view. It is characterized by the fact that it is set to a proper interval .

According to the structure of the present invention configured as described above, since the leveling work on the surface of the field can be performed by the leveling rotor, when the planting work is performed in the field after the scraping, the leveling rotor is used to scrape the field scene. There is an effect that it is possible to level the wheel traces of the traveling machine body while preventing overrun and to smoothly perform stable planting work. Further, the leveling rotor 13 is attached so that a plurality of plate-shaped leveling members 37 and a connecting member 38 for connecting the leveling members are integrally formed with resin and integrally rotated with the rotor shaft 14. Since the leveling work of the field surface is performed by driving and rotating, the leveling rotor 13 and its driving mechanism can be light and simple in structure.

The present leveling rotor for shallow field pole surface layer side than puddling rice transplanter of traditional or only leveling, requires driving force of the leveling rotor is relatively small, light weight more, ground leveling rotor 13, and a driving mechanism In addition, there is an effect that a simple structure can be obtained.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter that is a transplanter equipped with a leveling rotor according to the present invention. The riding rice transplanter is planted behind a traveling machine body 3 supported by front and rear wheels 1 and 2 as in the prior art. The work machine 4 is connected via a lifting link 6 so as to be movable up and down and rollable.

  As shown in FIGS. 1 and 2, on the front (back surface) side of the seedling platform 7 in the planting work machine 4, the vertical frame 8 in the vertical direction and the vertical frame 8 are fixed integrally. A horizontal frame 9 is provided below the vertical frame 8 in a horizontal direction. A plurality of planter cases 11 are attached to the side of the horizontal frame 9, and beaks 12 for planting seedlings are provided on the planter case 11.

  A plurality of floats 10 are provided below the planter case 11 in the left-right direction. The riding rice transplanter lowers the planting work machine 4 so that the float 10 contacts the field scene, and the traveling machine body 3 By rotating the beak 12 while traveling, the beak 12 scrapes off the seedlings on the seedling mount 7 and plantes them in the field. In addition, since this riding rice transplanter is not a simultaneous skin grafting machine, seedlings are transplanted to the field after the ground scraping.

  Further, on the planting work machine 4 side, a plurality of leveling rotors are disposed over substantially the entire width of the planting work machine 4 so as to be positioned between the beak 12 and the rear wheel 2 in front of the beak 12 and behind the rear wheel 2. 13 is pivotally supported by a fulcrum shaft (rotor shaft) 14 and is provided so as to be rotatably driven. The ground leveling rotor 13 is inserted into the field and rotated to thereby rotate the traveling machine body 3 during the planting operation. It is possible to perform leveling such as a headland in a field after rough scraping and to plant seedlings in the field after leveling.

  Next, the support structure for the leveling rotor 13 will be described. Between the upper sides of the vertical frames 8, left and right shafts 16 are rotatably supported, and upper arms 17 project from left and right sides of the shafts 16. A lower arm 20 is pivotally supported on the lower side of the left and right vertical frames 8 so as to be swingable.

  A vertical arm 18 is pivotally supported between the distal end side of each of the left and right upper arms 17 and the distal end side of each of the left and right lower arms 20. A plurality of leveling rotors 13 are supported in the left-right direction via 14. The leveling rotor 13 is rotationally driven by the driving force from the gear case 15 provided at the approximate center in the left-right direction.

  At this time, a lever 23 protrudes from the shaft 16, and the lever 23 is inserted into a lever guide 24 fixed to the vertical frame 8. Therefore, when the shaft 16 is rotated by swinging the lever 23, the leveling rotor 13 is moved up and down via the arm 17 and the rod 18 to adjust the height, and the lever 23 is provided on the upper end and the lower side of the lever guide 24. The height of the leveling rotor 13 is adjusted in stages by engaging with any of the plurality of stepped portions.

  As shown in FIGS. 3A and 3B, each leveling rotor 13 is divided into two symmetrically with the rotor shaft 14 in between, and is constituted by a combination of two pieces 36 and 36 having the same shape. As a whole, it has a saddle shape that is a regular hexagon in a side view. Each divided piece 36 is composed of a plurality of plate-shaped leveling members 37 that scratch the field scene as it rotates, and connecting members 38 that connect the leveling members 37 on both the left and right sides. In each of the divided pieces 36, a leveling member 37 and a connecting member 38 are integrally formed of resin.

  A bolt seat 43 for attaching a bolt 42 for fixing the two divided pieces 36 and a nut hole 46 for accommodating the nut 44 are formed on both sides of the connecting member 38 with the rotor shaft 14 interposed therebetween. Each connecting member 38 is formed with a semicircular cutout portion through which the rotor shaft 14 is inserted.

Accordingly, the two split pieces 36 are arranged on the circumferential surface of the rotor shaft 14 so that the bolt seat 43 of the one split piece 36 and the nut hole 46 of the other split piece 36 face each other and the rotor shaft 14 is held between the notches. At this time, by inserting pins 49 perpendicular to the rotor shaft 14, inserting both ends of the pins 49 into the respective divided pieces 36, and fixing both divided pieces 36 with bolts 42 and nuts 44. The leveling rotor 13 is attached to the rotor shaft 14 so as to rotate integrally. By releasing the fixing by the bolts 42 and the nuts 44, the two split pieces 36 can be removed from the peripheral surface side of the rotor shaft 14 (the ground leveling rotor 13 is disassembled).

  On the other hand, when the height of the leveling rotor 13 is adjusted by the lever 23 as described above and protruded downward from the lower surface of the float 10 from above the float 10, it is inserted into the field by the amount of protrusion from the float 10. Leveling work can be performed. However, the height of the leveling rotor 13 is adjusted in a range (see FIG. 4) in which the deepest depth inserted into the field of the leveling rotor 13 is less than the planting depth Z (surface side from the planting depth Z). As a result, the leveling rotor 13 leveles only the surface layer portion Y (see FIG. 4) shallower than the planting depth Z of the field. In the present embodiment, the leveling rotor 13 can be adjusted in a range where the protruding amount from the lower surface of the float 10 is approximately 10 to 40 mm, and the leveling of the surface layer portion Y shallower than the planting depth Z at the time of the planting operation. Is possible.

  Thereby, the height of the leveling rotor 13 is adjusted according to the planting depth (which can be changed as in the prior art), and the leveling rotor 13 is inserted into the field and driven to rotate, whereby the leveling rotor 13 is planted in the field. Only the surface layer Y shallower than Z is leveled, and as described above, after the leveling, the farming field 3 and the headland and the like after the roughing of the wheel marks of the traveling machine 3 due to the turning of the traveling machine 3 during the planting work are leveled. A stable planting operation of seedlings can be performed smoothly on this field.

  On the other hand, it is known that when the field after the scraping is performed again, or the same leveling as the scraping is performed, the field scene becomes excessively scratched and inconveniences such as deterioration of seedling growth occur. And the main leveling rotor 13 is used at the time of planting work on the field after scraping, and as shown in FIG. 4, as shown in FIG. The running locus α of the leveling member 37 is a running locus α of a predetermined leveling member 37a and a running locus β of the leveling member 37b immediately before the leveling member 37a in the rotational direction. The rotation speed is set so as to intersect at. FIG. 4 shows the positions of the two leveling members 37a and 37b accompanying the traveling of the traveling machine body 3 in 16 steps in time series.

  Further, as shown in FIG. 1, the driving force is transmitted from the transmission 25 of the rear wheel 2 to the gear case 15 for the leveling rotor 13, and when the traveling speed is changed, the grounding rotor 13 follows the traveling speed. Even when the rotational speed is changed and the traveling speed is changed, the running trajectory α of the predetermined leveling member 37a and the running trajectory β of the leveling member 37b immediately before in the rotational direction with respect to the leveling member 37a as described above. Crosses near the field surface in a side view.

  Thereby, the leveling work (work for scratching the field) by each leveling member 37 of the leveling rotor 13 overlaps on the surface of the field at almost any traveling speed, and there is almost no overlap inside the surface of the field. No. That is, the entire surface of the field is leveled without generating scraping, and the leveling operation is roughly performed so as to generate scraping within the field.

  For this reason, the field after scraping is not scratched more than necessary, the deterioration of seedling growth due to excessive scraping is prevented, and the entire surface of the planting work machine 3 is not generated on the surface of the field without causing scraping. In order to level the ground, weeding seeds and weeds that have fallen into the field after scraping are effective for weeding. And since the leveling work does not reach the planting depth Z, the soil of the root part of the seedling does not become too soft, the planting posture of the seedling is stabilized, the seedling stands up, and there is little lodging of the seedling.

  Further, the rotational speed of the leveling rotor 13 is linked to the traveling speed of the traveling machine body 3 so that mud and mud on the farm scene can be moved backward at a constant speed, and mud and mud pool in front of the float 10 Further, mud and mud pool in the front of the leveling rotor 13 are prevented, and planting defects due to mud and mud are also prevented. For this reason, the circumferential speed of the leveling rotor 13 is set to 1.5 to 2.5 times the vehicle speed of the traveling machine body 3, that is, 1.5 to 2.5 m / s with respect to the traveling speed 1 m / s.

  Since the leveling rotor 13 only leveles the pole surface side of the field as described above, the driving force of the leveling rotor 13 may be relatively small. Therefore, as described above, another transmission (in this embodiment) Can branch out the driving force from the transmission 25) for driving the rear wheel 2, and the drive mechanism of the leveling rotor 13 can be simply configured.

  In addition, since the leveling portion is an extremely shallow surface layer of the field as described above, the leveling rotor 13 itself does not need to have a large strength. Therefore, as in this embodiment, the leveling portion can be formed of a relatively light material such as resin or resin. In addition, the structure of the leveling rotor 13 can be simplified and the driving force can be further reduced because of the light weight.

It is a side view of a riding rice transplanter. It is a principal part front view of a leveling rotor part. (A) is a side view of a leveling rotor, (b) is a front view of a split piece. It is the side schematic diagram which showed the position of two leveling members in 16 steps in time series.

Explanation of symbols

3 traveling body 12 beak (planting part)
13 Leveling rotor 37 Leveling member 37a Leveling member 37b Leveling member 38 Connecting member Z Planting depth ラ ン ニ ン グ Running track of leveling member Β Running track of leveling member

Claims (1)

Planting unit instill seedlings linked圃 park vehicle body (3) comprises a (12), in front of the planting unit (12), the rotor shaft in conjunction with the traveling speed of the traveling machine body (14) in leveling rotor (13) a set digit transplanter performing field surface layer of ground leveling work by the drive,
The leveling rotor (13) is formed by integrally molding a plurality of plate-shaped leveling members (37) and a connecting member (38) for connecting the leveling members at intervals in the circumferential direction, with a rotor shaft (14 ) mounted to rotate integrally with the Rutotomoni,
By driving and rotating the leveling rotor (13) at a circumferential speed 1.5 to 2.5 times the vehicle speed of the traveling machine body (3) , the circumferential interval between the leveling members is more than planting depth. The running locus (α) of the predetermined leveling member (37a) and the running locus (β) of the leveling member (37b) immediately before in the rotational direction with respect to the leveling member (37a) when leveling the shallow surface of the farm field Set the interval so that it intersects near the field surface in side view,
A transplanter characterized by that.

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