JP2008228663A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter which is equipped with a ground-leveling rotor for raking and smoothing a field and can efficiently send backward the muddy water in front of the ground-leveling rotor. <P>SOLUTION: This transplanter which connects a planting implement 4 for planting seedlings to the back side of a travel machine frame 3, disposes a plurality of ground-leveling rotors 12 for raking and smoothing a field in a laterally arranged state in front of the planting implement 4, and forms muddy water passages S for backward guiding muddy water in the field between the ground-leveling rotors 12 has disposed water-raking rotors 14 rotated, in a direction for backward sending the muddy water with the forward travel of the machine frame in the muddy water passages S. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transplanter equipped with a leveling rotor that scrapes and smoothes a field.

  A conventionally known transplanter equipped with a leveling rotor for scraping and leveling the farm field causes the muddy water in the field collected in front of the leveling rotor to flow laterally along the leveling rotor as the machine moves forward, and the side of the leveling rotor There is a drawback that the seedlings in the field that have already been planted and discharged from the side may be pushed down.

In order to improve the above-mentioned drawbacks, a planting work machine for planting seedlings is connected to the rear of the traveling machine, and a plurality of leveling rotors for leveling the field are arranged in the horizontal direction in front of the planting work machine. Patent Document 1 is configured such that a muddy water flow path that guides muddy water in the field to the rear is formed between the rotors, and each leveling rotor is configured to send muddy water that is introduced into the leveling rotor to the muddy water channel side as the aircraft moves forward. , 2 is known.
Japanese Patent No. 3430619 Japanese Patent No. 3770992

  However, since the muddy water lateral flow along the leveling rotor is generated by the muddy water being pushed forward by the leveling rotor, a sufficient amount of muddy water is introduced into the leveling rotor of the transplanter of Patent Documents 1 and 2 above. However, there is a drawback that it is not possible to sufficiently prevent the seedlings from being pushed down by the muddy water discharged from the side of the leveling rotor into the field.

  In order to solve the above-mentioned problems, the transplantation of the present invention is performed by first connecting a planting work machine 4 for planting seedlings to the rear of the traveling machine 3 and arranging a plurality of leveling rotors 12 for leveling the field in the horizontal direction. In the transplanting machine which is arranged in front of the attached work machine 4 and forms a muddy water flow path S for guiding muddy water in the field to the rear between the leveling rotors 12, the water scraping which rotates in a direction to send muddy water to the rear as the machine moves forward The rotor 14 is provided in the muddy water flow path S.

  Secondly, the water scraping rotor 14 has a plurality of water scrapers 42 on the rotating peripheral surface, and the action surface 42a of the water scraper 42 is positioned at the front side in the rotation direction of the water scraping rotor 14 accompanying the forward travel of the machine body. The ground leveling rotor 12 has a plurality of leveling members 32 on the rotating circumferential surface, and the action surface 32a of the leveling member 32 is positioned at the front side in the rotational direction of the leveling rotor 12 as the aircraft moves forward. It is characterized by being configured so as to approach the rotational axis of the leveling rotor 12 as it goes.

  Thirdly, a restriction plate 28 for restricting the flow of muddy water in the lateral direction is provided on the side of the water scraping rotor 14.

  According to the transplanter of the present invention configured as described above, the muddy flow path that guides the muddy water in the field to the rear is provided with the scraping rotor that sends the muddy water in the field to the rear. The muddy water collected in front of the rotor is efficiently sent to the rear of the leveling rotor. For this reason, the muddy water accumulated in front of the leveling rotor is flown laterally along the leveling rotor as the aircraft moves forward, and is discharged from the side of the leveling rotor together into the field. It is prevented that the seedling in the cultivated field is pushed down.

  Further, the water scraping rotor has a plurality of water scoops on the rotating peripheral surface, and the action surface of the water scissors is configured to be positioned at the front side in the rotation direction of the water scraping rotor accompanying forward traveling of the machine body, and thus away from the rotation axis of the water scraping rotor. Accordingly, the water scrap inserted into the muddy water surface from the front end portion with the forward traveling of the machine body scoops up the muddy water, and can efficiently send the muddy water backward. In addition, the leveling rotor has a plurality of leveling members on the rotating circumferential surface, and the working surface of the leveling member approaches the rotational axis of the leveling rotor as the position of the leveling rotor in the rotational direction becomes higher as the aircraft moves forward. With this configuration, the leveling member that comes in contact with the leveling ground from the base end as the aircraft moves forward can evenly level the leveling and can level the field efficiently.

  Furthermore, it is possible to prevent the muddy water from being discharged from the side of the leveling rotor by providing a regulating plate on the side of the watering rotor and regulating the flow of the muddy water in the lateral direction.

  FIG. 1 is a side view of a riding rice transplanter to which the transplanter of the present invention is applied. The riding rice transplanter has a structure in which a planting work machine 4 having a seedling table 5 is connected to a rear part of a traveling machine body 3 having front and rear wheels 1 and 2 via a lifting link 6 so as to be movable up and down. The planting work machine 4 is provided with a plurality of planting units 7 for scraping seedlings from the seedling mount 5 and planting them on a farm field, and a plurality of floats 8 in the front-rear direction for leveling the farm field.

  A horizontal frame 11 in the left-right direction is connected to the elevating link 6 in a freely rolling manner. The horizontal frame 11 is provided with vertical frames 9 and 9 extending upward at the left and right end portions, respectively, and the planting portion 7 is projected rearward.

  Further, in the front of the planting part 7 and behind the rear wheel 2, a horizontal leveling rotor 12 is rotatably supported by a rotor shaft 13 over a substantially entire width of the riding rice transplanter. A plurality of leveling rotors 12 are arranged side by side in the left-right direction, and a wetting rotor 14 described later is provided between the leveling rotors 12.

  In the headland or the like of the field after scraping, which has been rough due to the turning of the body during planting work, etc., the ground leveling rotor 12 can be grounded and rotated to drive the headland or the like. And since the said leveling rotor 12 is arrange | positioned ahead of the planting work machine 4, this riding rice transplanter can plant a seedling in the headland etc. after leveling by the leveling rotor 12. FIG.

Next, the support structure for the leveling rotor 13 will be described.
2A is a rear view of the main part of the planting work machine, and FIG. 2B is a plan view of the main part of the planting work machine. As shown in FIGS. 1 and 2, a horizontal axis 16 is provided above the leveling rotor 12. The shaft 16 is rotatably supported on the left and right vertical frames 9, 9, and a base end portion of an arm 17 that rotates integrally with the shaft 16 is integrally attached to the left and right ends of the shaft 16. ing.

  An upper end portion of a support rod 19 is connected to the distal end portion of each arm 17 via a link mechanism 18, and the rotor shaft 13 is rotatably supported on the lower end portions of the left and right support rods 19, 19. ing. The shaft 16 is provided with a lever 21. The shaft 16 is rotated by swinging the lever 21, and the rotor shaft 13 is moved up and down, that is, the leveling rotor 12 is moved up and down. The lever 21 is configured to be fixed at a plurality of locations, and the leveling rotor 12 is positioned at a predetermined elevation height correspondingly.

Next, a power transmission mechanism for the leveling rotor 12 will be described.
As shown in FIGS. 1 and 2, a gear case 22 is provided at an intermediate portion of the rotor shaft 13, and a drive case 23 for driving the leveling rotor 12 is provided below the rear end portion of the traveling machine body 3. The drive case 23 is connected to the gear case 22 via two universal joints 24 and 24 and a drive shaft 26. With the above configuration, when a clutch (not shown) provided in the drive case 23 is engaged and operated, power is transmitted to the gear case 22 and the rotor shaft 13 (leveling rotor 12) is rotationally driven.

  It is to be noted that the ground leveling by the leveling rotor 12 is performed when the machine moves forward with the planting work machine, and when the machine moves forward, the leveling rotor 12 rotates counterclockwise in the same direction as the wheels 1 and 2, that is, when viewed from the left side ( It is rotationally driven in the direction of the arrow in FIG. 1 (rotated in the forward direction).

Next, the structure of the leveling rotor 12 and the watering rotor 14 will be described.
As shown in FIG. 2, the leveling rotor 14 includes a total of 4 outsides of the left and right support rods 19, between the left support rod 19 and the gear case 22, and between the gear case 22 and the right support rod 19. The top of each leveling rotor 12 is substantially entirely covered with a horizontal cover. The cover 27 is supported by left and right support rods 19 and 19, and restriction plates 28 and 28 that extend downward and forward and reach the rear wheel 2 are integrally extended at the left and right ends of the cover 27, respectively. ing.

  In the field in front of the leveling rotor 12 by a gap formed by the leveling rotor 12 provided on the outside (left side) of the left support rod 19 and the leveling rotor provided between the left support rod 19 and the gear case 22. The muddy water flow path S for guiding the muddy water to the rear of the leveling rotor 12 is configured. In addition, the muddy water flow path S is a gap formed by the leveling rotor 12 provided between the left support rod 19 and the gear case 22 and the leveling rotor 12 provided between the gear case 22 and the right support rod 19. And the clearance formed by the leveling rotor 12 provided between the gear case 22 and the right support rod 19 and the leveling rotor 12 provided outside the right support rod 19 (right side). Composed. As described above, the muddy water in front of the leveling rotor 12 is sent to the rear of the leveling rotor 12 through the muddy water flow paths S formed in three places.

  A draining rotor 14 that rotates integrally with the leveling rotor 12 is provided on the side of the leveling rotor 12 that forms the muddy water path S on the side of the muddy water path S. Also, a total of two scraping rotors 14 are attached to the outer side portions of the leveling rotor 12 respectively provided at the left and right ends of the rotor shaft 13, and the outer sides of the two scraping rotors 14, 14. The side is substantially entirely covered with the left and right restriction plates 28, 28 described above.

  The operation of the restriction plate 28, the muddy water flow path S and the water scraping rotor 14 will be described. The muddy water in front of the arranging rotor 12 whose flow in the lateral direction is restricted by the restriction plate 28 flows into the muddy water flow path S. The muddy water that has flowed into the muddy water flow path S is efficiently sent to the rear of the leveling rotor 12 by the water scraping rotor 14. Synergistic effects are combined by the above series of actions, and the muddy water in front of the leveling rotor 12 can be efficiently sent to the rear of the leveling rotor 12.

  Further, the above-described floats 8 are respectively disposed behind the three muddy water channels S, and the portions that are not scraped by the leveling rotor 12 are leveled by the floats 8. In addition, 29 shows the planting location of the seedling by the planting part 7, and is located behind each float 8. FIG. Each planting location 29 is leveled by each leveling rotor 12 and each float 8 except for the left and right ends. The planting places 29 and 29 at the left and right ends are rarely damaged by the wheels 1 and 2 and the like, so that a sufficiently good state is maintained even if the ground leveling rotor 12 and the float 8 are not leveled. .

  FIGS. 3A and 3B are a left side view and a front view of a leveling rotor to which a watering rotor is attached. The leveling rotor 12 is symmetrically divided into two with the rotor shaft 13 in between, and is composed of a combination of two divided pieces 31 and has a substantially regular polygon (substantially regular hexagonal in this embodiment) in side view as a whole. Has a saddle shape. Each of the divided pieces 31 has a plurality of plate-shaped leveling members 32 that scratch the field scene as it rotates, a connecting member 33 that connects the leveling members 32 on both the left and right sides, and a reinforcement that connects the leveling members 32 at the approximate left and right sides. It is comprised from the member 34, and is integrally molded with resin.

  On both sides of the connecting member 33 across the rotor shaft 13, a bolt seat 36 for attaching a bolt (not shown) for fixing the two divided pieces 31, 31 and a nut hole for accommodating a nut (not shown). 37 is formed. Then, both the split pieces 31 and 31 are symmetrically fixed integrally with bolts and nuts with the rotor shaft 13 interposed therebetween so that the bolt seat 36 of one split piece 31 and the nut hole 37 of the other split piece 31 face each other. Thus, the leveling rotor 12 is formed.

  Each connecting member 33 is formed with a semicircular cutout 38 through which the rotor shaft 13 is inserted. By connecting the two connecting members 33 and 33, the cutouts 38 and 38 are substantially circular in a side view. The insertion hole 39 is formed. The rotor shaft 13 is inserted into the insertion hole 39, and the leveling rotor 12 is fixed to the rotor shaft 13 using a pin (not shown) or the like.

In addition, three leveling members 32 are attached to each divided piece 31. When the divided pieces 31 are assembled as the leveling rotor 13, each leveling member 32 has a regular hexagonal apex portion (polygonal shape) in side view. Located at each vertex). Each leveling member 32 has an end formed in a wave shape protruding outside the connecting member, and the surface facing outward with respect to the rotational circumferential surface of the organizing rotor 12 is when the organizing rotor 12 rotates in the field. An action surface 32a for grounding the field and leveling the field is formed. The working surface 32a of the organizing member 32 and the leveling member 32, the distance than the distance R ₁ from the forward direction the rear of leveling rotor 12 to the rotational axis from the normal direction front portion of the ground leveling rotor 12 to the rotational axis R ₂ is configured to be shorter.

  As shown in FIG. 3, the water draining rotor 14 is divided into two symmetrically across the rotor shaft 13, and is configured by a combination of two divided pieces 41 and 41. Each divided piece 41 is composed of three plate-shaped water scrapers 42 that scrape off the muddy water in the field as it rotates, and a plate-shaped base portion 43 on which each water scraper 42 projects.

  The base portion 43 of the split piece 41 of the water scraping rotor 14 is formed in a size that fits entirely on the side surface of the split piece 31 of the leveling rotor 12, and the bolt holes 44 provided at two locations of the base portion 43 are interposed. Then, the bolt is fixed in a state where the entire mounting surface is in contact with the side surface of the connecting member 33. When the split piece 31 of the leveling rotor 12 is integrally fixed with the rotor shaft 13 sandwiched between the divided pieces 41 of the scooping rotor 14 and fixed, the leveling rotor 12 is configured to fix the rotor shaft 13. It is fixed integrally by sandwiching it and constitutes one scooping rotor.

  That is, the two divided pieces 41 and 41 of the water scraping rotor 13 are configured to be integrated by fixing the two divided pieces 31 and 31 of the leveling rotor 12 together. This eliminates the need to remove the split piece 41 of the water scraping rotor 14 when releasing the fixing of the split pieces 31 of the leveling rotor 12, and improves maintainability and the like.

  The base portions 43 of the two divided pieces 41 and 41 that are attached and fixed to the leveling rotor 12 and constitute the scooping rotor 14 are substantially circular rings that have substantially the same axial center as the aforementioned insertion hole 39 of the leveling rotor 12 in a side view. The bolt holes 44 of the base portion 43 are arranged at intervals of 90 °. Since the two bases 41, 41 of the water scraping rotor 14 form a ring shape when attached to the leveling rotor 12, the insertion hole 39 of the leveling rotor 12 is not blocked by the water scraping rotor 14. For this reason, it is possible to insert / remove the rotor shaft 13 with respect to the leveling rotor 12 even in the state where the water scraping rotor 14 is attached.

The webbing 42 is a plate-like member protruding from the base part 43 in the axial direction of the rotor shaft 13, and three bases 43 are provided at equal intervals on the base part 43. In a state of being attached and fixed, the state is a state of protruding from the side of the leveling rotor 12. In each of the webs 42, the surface facing inward with respect to the rotational circumferential surface of the web rotor 14 forms an action surface 42a for sending muddy water in the field when the web rotor 14 rotates in the field. The working surface 42a of the paddle 42 and paddle 42, the forward direction the front of the paddle rotor 14 than the distance r ₁ from the rear (forward direction of the ground leveling rotor) forward direction of the paddle rotor 14 to the rotational axis as towards the distance r ₂ to the rotation axis becomes longer, which is curved in the forward direction.

  Since the water scraping rotor 14 having the above-described structure has a cantilever structure that supports only the base end portion (the right end portion in FIG. 3B) of the water scraping 42 and does not support the front end portion, the base portion 43 extends from the front end portion of the water scraping. Since the bolt hole 44 can be easily accessed, the assembly can be easily performed.

  As described above, the example in which the three scrapers 42 are provided at equal intervals on each divided piece 41 of the water scraping rotor 14 has been described. FIG. 4 is an example in which the six scrapers 42 are provided at equal intervals on each divided piece 41 of the water scraping rotor 14. Show. According to the water scraping rotor 14 having the above-described configuration, the efficiency of sending muddy water backward in the muddy water flow path S further increases.

It is a side view of the riding rice transplanter to which the transplanter of the present invention is applied. (A) is a principal part rear view of a planting work machine, (B) is a principal part top view of a planting machine. (A), (B) is the left view and front view of the leveling rotor which attached the watering rotor. It is drawing of the leveling rotor which attached the watering rotor which shows another Example, (A), (B) is the left view and front view of the leveling rotor which attached the watering rotor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Traveling machine body 4 Planting work machine 12 Leveling rotor 14 Water scraping rotor 28 Control board 32 Leveling member 32a Action surface 42 Water scraping 42a Action surface S Mud flow path

Claims (3)

  A planting work machine (4) for planting seedlings is connected to the rear of the traveling machine body (3), and a plurality of leveling rotors (12) for leveling the field are arranged in the lateral direction in front of the planting work machine (4). In a transplanter having a muddy flow path (S) that is disposed and guides muddy water in a farm field rearward between the leveling rotors (12), a water scraping rotor (14) that rotates in a direction to send muddy water backward as the aircraft moves forward ) In the muddy water flow path (S).   The water scraping rotor (14) has a plurality of water scoops (42) on the rotating peripheral surface, and the action surface (42a) of the water scissors (42) is positioned at the front side in the rotational direction of the water scraping rotor (14) accompanying forward traveling of the machine body. Therefore, it is constructed so as to move away from the rotation axis of the water draining rotor (14), and the leveling rotor (12) has a plurality of leveling members (32) on the rotating peripheral surface, and the working surface (32a) of the leveling member (32). The transplanter according to claim 1, wherein the machine is configured so as to approach the rotational axis of the leveling rotor (12) as the position of the leveling rotor (12) increases as the position of the leveling rotor (12) increases.   The transplanter according to claim 1 or 2, wherein a regulating plate (28) for regulating the lateral flow of muddy water is provided on a side of the watering rotor (14).

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