JP2006158230A - Ground leveling rotor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground leveling rotor capable of being easily assembled and mounted on a fulcrum shaft. <P>SOLUTION: This ground leveling rotor is structured so that two or more ground leveling rotor pieces 36, 48, in which two or more ground leveling members 37 for scraping a surface of a cultivated field in accordance with rotation around the fulcrum shaft 14 as a shaft center are together joined by joining members 38, are together joined, so as to form a cage shape as a whole by using the fulcrum shaft 14 as a center, and then integrally mounted on the fulcrum shaft 14 by joining and fastening members 44 for composing the ground leveling rotor. Further, the concave part 51 and a convex part 49 for fastening each of the ground leveling rotor pieces 48 in such a manner as to make the pieces formed into the cage shape as a whole are arranged on the joining member 38 of each of the ground leveling rotor pieces 48. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a leveling rotor in a transplanter such as a riding rice transplanter.

Conventionally, a leveling rotor piece that is rotatably supported through a fulcrum shaft in front of a planting work machine and that is connected to a plurality of leveling members by a connecting member that scratches the field scene with rotation about the fulcrum shaft as a center. A ground leveling rotor is known which is constituted by connecting a plurality of hooks so as to form a saddle shape as a whole around a fulcrum shaft.
JP 2004-105151 A

  The leveling rotor piece forms a leveling rotor by connecting members of the leveling rotor pieces to each other by bolts. The leveling rotor composed of a plurality of leveling rotor pieces is integrally fixed to the rotor shaft by a separate pin. For this reason, parts (bolts) for making the leveling rotor piece a rotor for leveling and parts (pins) for fixing the leveling rotor to the rotor shaft are necessary, and there are many parts for attaching the leveling rotor to the rotor shaft. Therefore, there is a drawback that the mounting operation is not easy.

  The leveling rotor according to the present invention for solving the above-mentioned problems is pivotally supported in front of the planting work machine 4 via a fulcrum shaft 14 so as to be freely rotatable, and the field scene is accompanied by rotation about the fulcrum shaft 14 as an axis. Leveling rotor pieces 36 and 48 in which a plurality of leveling members 37 that are scratched are connected by a connecting member 38 are connected by a connecting and fixing member 44 so as to form a bowl shape as a whole around the fulcrum shaft 14. The first feature is that the leveling rotor pieces 36 and 48 are connected to each other by the connecting and fixing member 44 and are integrally attached to the fulcrum shaft 14.

  Secondly, a concave portion 51 and a convex portion 49 are provided in the connecting member 38 of each leveling rotor piece 48, and the concave portion 51 and the convex portion 49 are simultaneously inserted into the convex portion 49 and the concave portion 51 of the connecting member 38 of another leveling rotor piece 48. The ground leveling rotor pieces 48 are locked so as to form a bowl shape as a whole by inserting the concave portions 51 and the convex portions 49.

  Third, a plurality of connecting members 38 are provided in the longitudinal direction of the leveling member 37, and convex portions 49 or concave portions 51 are provided in the connecting members 38 at both ends of the leveling member 37, and the connecting member 38 is located between the two connecting members 38. The leveling rotor pieces 48 are connected as the leveling rotor 13 by the connection fixing member 44 and are integrally attached to the fulcrum shaft 14.

  According to the structure of the present invention configured as described above, each leveling rotor piece is connected by a single component (connection fixing member) so as to form a saddle shape as a whole, and by each leveling rotor piece, The structured leveling rotor is integrally fixed to the fulcrum shaft. As a result, the parts for connecting each leveling rotor piece as a leveling rotor and the part for fixing the leveling rotor to the fulcrum shaft can be combined into one part, thereby reducing the cost of the leveling rotor and for leveling. There is an effect that the assembly of the rotor can be facilitated.

  Further, by providing a recess and a projection on the connecting member of each leveling rotor piece, and by setting each leveling rotor piece so as to form a bowl shape as a whole by ant coupling of the recess and the projection, The temporary assembly of the rotator rotor can be performed easily, and the leveling rotor can be assembled more easily.

  A plurality of connecting members are provided in the longitudinal direction of the leveling member, and convex portions or concave portions are provided on the connecting members at both ends of the leveling member. In the connecting member positioned between the two connecting members, each leveling rotor piece is leveled by the connecting fixing member. It can be positioned with improved accuracy of temporary assembly by connecting the concavo-convex portions on both ends of the leveling rotor piece by connecting with the fulcrum shaft and being integrally attached to the fulcrum shaft. it can. Further, the connecting and fixing member can be used at the substantially central portion of the leveling rotor piece, and the leveling rotor can be assembled in a balanced and easy manner with one connecting and fixing member.

  FIG. 1 is a side view of a riding rice transplanter equipped with a leveling rotor according to the present invention. In this riding rice transplanter, a planting machine 4 is connected to a rear 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 and to be able to roll. The planting machine 4 is provided with a seedling stand 7 obliquely.

  A vertical frame 8 in the vertical direction and a horizontal frame 9 horizontally provided in the horizontal direction are provided below the vertical frame 8 on the back surface (back surface) side of the seedling platform 7. The horizontal frame 9 is integrally fixed to the vertical frame 8. A plurality of planter cases 11 are attached to the side of the horizontal frame 9.

  A beak 12 serving as a planting portion is attached to the planter case 11 so as to be rotatable. The planting work machine 4 scrapes the seedlings on the seedling placing stand 7 with the beaks 12 provided in the planter case 11 to plant them in the field. Since this rice paddy transplanter is not a simultaneous transplanting machine, seedlings are planted in the field after the scraping.

  On the planting machine 4 side, a ground leveling rotor 13 is rotatably supported on a fulcrum shaft (rotor shaft) 14 over substantially the entire width of the riding rice transplanter. The leveling rotor 13 is disposed between the planting work machine 4 and the rear wheel 2. The leveling rotor 13 is inserted into the surface layer portion of the field and is driven to rotate, thereby leveling only the surface layer portion shallower than the planting depth of the field after scraping.

  The leveling rotor 13 performs leveling of the headland and the like by rotating the leveling rotor 13 as described above in the headland and the like of the field after scraping roughened by turning of the traveling machine body 3 and the like during the planting operation. A seedling can be stably planted on a headland or the like after leveling by the leveling rotor 13.

  As shown in FIGS. 1 and 2, a horizontal axis 16 is rotatably supported between the upper sides of the vertical frames 8. A lever 23 projects from the shaft 16. The shaft 16 is rotated by the swing of the lever 23. Arms 17 are provided on the left and right sides of the shaft 16. The tip end of the rod 18 is pivotally connected to the tip end side of each arm 17 so as to be rotatable.

  A support rod 19 is pivotally connected to the lower ends of the left and right rods 18 so as to be rotatable. The support rod 19 is slidably inserted into the cylindrical guide 22. The guide 22 is attached to the horizontal frame 9 side via the bracket 21. The rotor shaft 14 is pivotally supported on the lower end side of the support rod 19 so as to be rotatable in the left-right direction. The leveling rotor 13 is integrally fixed and attached to the rotor shaft 14.

  The support mechanism of the leveling rotor 13 is configured as described above, and the shaft 16 is rotated by the swing of the lever 23, and the support rod 19 is guided by the guide 22 via the arm 17 and the rod 18 to move up and down. By sliding, the rotor shaft 14 moves up and down. By moving the rotor shaft 14 up and down, the height of the leveling rotor 13 integrally attached to the rotor shaft 14 is adjusted.

  The lever 23 is inserted through a lever guide 24 fixed to the vertical frame 8. The height of the leveling rotor 13 can be adjusted in stages by engaging the lever 23 with any of a plurality of steps provided in the lever guide 24. A spring 26 is stretched between the shaft 16 and the support rod 19 side. The spring 26 reduces the operating force of the lifting operation of the leveling rotor 13 by the lever 23.

  A gear case 27 is provided at an intermediate portion of the rotor shaft 14. A rotor drive case for driving the rotor is provided on the traveling machine body 3 side. A driving force is input to the gear case 27 of the rotor shaft 14 by the drive shaft 31 through the universal joint 29 from the rotor drive case.

  A clutch is provided in the rotor drive case. By operating the clutch to the inward side, the driving force is transmitted to the gear case 27, the rotor shaft 14 is rotationally driven, and the leveling rotor 13 is rotationally driven.

  The leveling rotor 13 includes the outside of the left and right support rods 19, between the planting PTO shaft 33 that drives the planting machine 4 and the right support rod 19, and between the planting PTO shaft 33 and the gear case 27. And it is attached to five places between the gear case 27 and the left support rod 19, and is provided over substantially the entire width of the riding rice transplanter as a whole. The upper side of each leveling rotor 13 is covered with a cover 34.

  As shown in FIG. 3, each leveling rotor 13 is divided into two symmetrically across the rotor shaft 14, and is configured by a combination of two leveling rotor pieces 36 and 36. The leveling rotor pieces 36 have the same shape, and are combined so as to form a saddle shape that is a regular hexagon in a side view as a whole, and are integrally fixed to constitute the leveling rotor 13.

  As shown in FIGS. 4 (a) and 4 (b), each leveling rotor piece 36 includes a plurality of plate-shaped leveling members 37 that scrape the farm scene as it rotates, and the leveling members 37 are arranged at both the left and right sides and substantially at the center. It is comprised from the connection member 38 to connect. In each leveling rotor piece 36, a leveling member 37 and a connecting member 38 are integrally formed of resin.

  As described above, since the leveling portion is an extremely shallow surface layer of the field, the leveling rotor 13 itself does not require high strength, and therefore, the leveling rotor pieces 36 are formed of a relatively lightweight material such as resin or resin. can do.

  Thereby, the leveling rotor 13 can be made inexpensively and easily assembled. Moreover, since the leveling rotor 13 becomes lightweight, a driving force can be made smaller. Furthermore, it can be easily attached as an option to a riding rice transplanter or the like that does not have the leveling rotor 13.

  The end of the leveling member 37 protrudes to the outside of the connecting member 38 located on both outer sides. By fixing the connecting members 38 located on both outer sides of the two leveling rotor pieces 36 to each other, the two leveling rotor pieces 36 are integrally connected to form the leveling rotor 13. When the leveling rotor piece 36 is assembled as the leveling rotor 13, each leveling member 37 is positioned at each apex portion of the regular hexagon when viewed from the side.

  Each connecting member 38 is formed with a semicircular cutout portion 42 for inserting the rotor shaft 14. By connecting both connecting members 38 so as to form the leveling rotor 13, the cutout portion 42 of each connecting member 38 forms a substantially circular insertion hole for the rotor shaft 14 in a side view.

  Bosses 38a are formed at the center portions of the connecting members 38 on the left and right sides. The notches 42 of the left and right connecting members 38 are formed in the boss 38a. Bolt insertion holes 43 are provided in the radial direction on the peripheral surfaces of the cutout portions 42 of the connecting members 38 on both the left and right sides.

  The bolt insertion holes 43 have axial centers positioned on a straight line when the two leveling rotor pieces 36 are combined as the leveling rotor 13 as described above. Thereby, one bolt 44 can be inserted into both leveling rotor pieces 36 through the bolt insertion holes 43. Both the leveling rotor pieces 36 can be integrally connected and fixed by the bolts 44 as described above.

  The bolt insertion hole 43 is a step hole. When the bolt 44 is inserted into the bolt insertion hole 43, the bolt head stops at the step portion, and the nut 46 can be attached. The connecting member 38 is provided with an assembly hole 47. The grading rotor pieces 36 can be fixed or disassembled by applying a spanner to the nut 46 or the bolt head through the hole 47.

  By providing the hole 47 in the connecting member 38, the bolt 44 can be easily fastened even if the connecting member 38 is relatively thin. Further, since the large diameter portion 43a of the bolt insertion hole 43 only needs to have a diameter that allows the bolt 44 to pass therethrough, the notches and holes formed on the leveling member 37 side become smaller as the bolt insertion hole 43 is formed. In other words, the leveling performance (leveling performance) of the leveling rotor 13 is not impaired.

  On the other hand, the rotor shaft 14 has a hexagonal cross section, and mounting holes (not shown) for mounting the leveling rotor 13 are provided in the radial direction. The mounting hole is disposed so that the shaft center is aligned with the shaft center of the bolt insertion hole 43 when the leveling rotor 13 is disposed at the mounting position. Bolts 44 for fixing both leveling rotor pieces 36 can be inserted and passed through the mounting holes.

  With the above structure, as shown in FIG. 3, the leveling rotor piece 36 is formed by the leveling rotor piece 36 by passing the rotor shaft 14 (mounting hole) and connecting and fixing both leveling rotor pieces 36 with bolts 44. In addition, the leveling rotor 13 formed by the leveling rotor piece 36 is integrally attached and fixed to the rotor shaft 14.

  As a result, the part for connecting each leveling rotor piece 36 as the leveling rotor 13 and the part for fixing the leveling rotor 13 to the rotor shaft 14 are shared by one (one set) bolt 44 and nut 46. Therefore, the leveling rotor 13 can be reduced in cost, and the leveling rotor 13 can be easily assembled.

  As shown in FIGS. 5 (a) and 5 (b), the leveling rotor piece is provided with a boss 38a at the central portion of the central connecting member 38 and a bolt insertion hole 43 so as to protrude from the right and left connecting members 38. It is good also as the rotor piece 48 for leveling provided with the part 49 and the recessed part 51. FIG.

  As shown in FIG. 6, when the two ground leveling rotor pieces 48 are combined as the leveling rotor 13, the convex part 49 and the concave part 51 are formed so that the convex part 41 of one leveling rotor piece 48 is the same as the other leveling rotor piece 48. The concave portion 51 of one leveling rotor piece 48 is inserted into the concave portion 51 and is inserted into the convex portion 51 of the other leveling rotor piece 48 so as to be ant-coupled.

  Specifically, a convex portion 49 is provided on one side and a concave portion 51 is provided on the other side across the axis of the rotor shaft 14. Thereby, the leveling rotor piece 48 which forms one leveling rotor 13 can be manufactured by one type, and the manufacturing cost of the leveling rotor 13 (leveling rotor piece 48) can be reduced.

  When the above two leveling rotor pieces 48 are integrally connected and fixed and are integrally attached to the rotor shaft 14 as the leveling rotor 13, both leveling rotor pieces 48 are connected to the rotor shaft 14 by ant coupling by the convex portions 49 and the concave portions 51. It can be easily temporarily assembled. As a result, the leveling rotor 13 can be easily assembled and attached to the rotor shaft 14.

  Similarly to the leveling rotor piece 36 described above, the leveling rotor piece 48 is also formed with a semicircular cutout portion 42 for inserting the rotor shaft 14 through each connection member 38, and the notch of the central connection member 38 is formed. A portion 42 is formed on the boss 38a, and a bolt insertion hole 43 having a stepped hole is provided in the radial direction on the peripheral surface of the cutout portion 42 of the central connecting member 38.

  In the case of the leveling rotor 13 using the main leveling rotor piece 48, as with the leveling rotor 13 using the leveling rotor piece 36, one bolt is inserted into the bolt insertion holes 43 of both leveling rotor pieces 48. 44 is inserted, and when the bolt 44 is inserted, the bolt 44 is passed through the mounting hole of the rotor shaft 14 and the nut 46 is tightened, so that the bolts 44 for fixing both the leveling rotor pieces 48 integrally are also used. The leveling rotor 13 can be integrally attached to the rotor shaft 14.

  The large-diameter portion 43a in the bolt insertion hole 43 of the leveling rotor piece 48 is sized so that a tool such as a socket wrench that fits the fixing bolt 44 or the nut 46 can be inserted. It can be done easily.

  By using the leveling rotor piece 48, both leveling rotor pieces 48 can be locked by ant coupling at both ends of the leveling rotor piece 48, and can be integrally fixed to the rotor shaft 14 at a substantially central portion. The leveling rotor 13 can be easily and well assembled to the rotor shaft 14 by the (one set) of bolts 44 and nuts 46.

  It is also possible to provide a leveling rotor piece in which one convex portion 49 is provided on one of the connecting members 38 at both ends of each leveling rotor piece 48 and one concave portion 51 is provided on the other connecting member 38. However, when both the leveling rotor pieces are combined as the leveling rotor 13, the convex portion 49 and the concave portion 51 are inserted so that the convex portion 49 of one leveling rotor piece is inserted into the concave portion 51 of the other leveling rotor piece and is ant-coupled. Need to be placed.

  In this case as well, both the leveling rotor pieces 48 can be temporarily assembled to the rotor shaft 14 by ant coupling by the concave portions 51 and the convex portions 49, and the leveling rotor 13 can be easily assembled and attached to the rotor shaft 14. In addition, the same effects as the leveling rotor piece 48 can be obtained.

  In any of the above-described leveling rotor pieces, the end of the leveling member 37 on the leveling work side is formed in a wave-like tooth portion 41 for leveling in which a peak portion and a valley portion are continuous. As shown in FIG. 7, the leveling members 37 provided on one leveling rotor piece are formed so that the phases of the waves of the tooth portions 41 are sequentially shifted by 1 / 3P, where P is the wavelength of the wave. Has been.

  For this reason, as described above, the leveling rotor piece 13 is formed by rotating one of the leveling rotor pieces 180 ° with respect to the other leveling rotor piece and integrally connecting and fixing the two leveling rotor pieces. The six leveling members 37 of the rotor 13 are such that the wave phases of the tooth portions 41 are sequentially shifted by 1 / 3P.

  The intermediate leveling member 37 used for the leveling rotor piece 48 has a notch 50 (corresponding to the large diameter portion 43a in the bolt insertion hole 43) for inserting a tool for tightening the bolt 44. Is done. Further, the leveling member 37 on one end side has an inclined surface 52 in relation to a punching die when the leveling rotor piece is manufactured.

  As a result, the leveling rotor 13 has a small phase shift of the wave of the tooth portion 41 between the leveling members 37 of less than 1/2 (1 / 3P), so the peak portion of the leveling member 37 to be grounded after the second is In addition, a part of the leveling part is always a part leveled by the peak of the leveling member 37 that has been grounded immediately before, and the leveling load applied to the leveling rotor 13 is reduced, and each tooth part 41 that is out of phase is used for leveling. The leveling residue is reduced over the entire width of the rotor 13.

  Further, the valley portion of the predetermined leveling member 37 and the valley portion of the grounding member 37 to be grounded next to the grounding member 37 always overlap in the rear view, and drainage is performed rearward from the overlapping portion. The muddy water generated at the time of leveling is smoothly drained rearward through the valleys, and the leveling work can be performed smoothly without flushing the muddy water forward or sideward.

  As described above, each leveling rotor piece is provided with three leveling members 37 with phases shifted by 1/3, so that the two leveling rotor pieces have exactly the same shape, and one of them is 180 °. By rotating and fixing both leveling rotor pieces, it is possible to configure the leveling rotor 13 in which all the leveling members 37 are out of phase by 1/3. For this reason, the leveling rotor pieces forming one leveling rotor 13 can be manufactured with one mold, and the manufacturing cost can be reduced.

It is a side view of the riding rice transplanter which employ | adopted the leveling rotor of this invention. It is a planting machine principal part front view. It is a side view of the leveling rotor. (A) is a side view of a leveling rotor piece, (b) is a rear view. (A) is a side view of the leveling rotor piece of other embodiment, (b) is a rear view. It is a side view of the rotor for leveling of other embodiment. It is a front view of each leveling member which shows the phase shift of the tooth | gear part of each leveling member provided in one leveling rotor piece.

Explanation of symbols

4 Planting machine 14 Rotor shaft (fulcrum shaft)
36 Leveling rotor piece 37 Leveling member 38 Connection member 44 Bolt (connection fixing member)
48 Ground leveling rotor piece 49 Convex part 51 Concave part

Claims (3)

  A plurality of leveling members (37) that are rotatably supported via a fulcrum shaft (14) in front of the planting work machine (4) and scratch the field scene with rotation about the fulcrum shaft (14). The ground leveling rotor pieces (36), (48) connected by the connecting member (38) are connected by a connecting fixing member (44) so as to form a bowl shape as a whole around the fulcrum shaft (14). In the leveling rotor, the leveling rotor pieces (36), (48) are connected by the connection fixing member (44), and the leveling rotor is integrally attached to the fulcrum shaft (14).   The connecting member (38) of each leveling rotor piece (48) is provided with a concave portion (51) and a convex portion (49), and the concave portion (51) and the convex portion (49) are connected to the other leveling rotor piece (48) connecting member ( 38) are arranged so as to be simultaneously inserted into the convex portion (49) and the concave portion (51), and the respective ground leveling rotor pieces (48) are formed into a bowl shape as a whole by inserting each concave portion (51) and the convex portion (49). The leveling rotor according to claim 1, wherein the leveling rotor is locked so as to be formed. A plurality of connecting members (38) are provided in the longitudinal direction of the leveling member (37), the connecting members (38) at both ends of the leveling member (37) are provided with convex portions (49) or concave portions (51), and both connecting members (38 ) Between the leveling rotor pieces (48) as leveling rotors (13) and integrally attached to the fulcrum shaft (14). The ground leveling rotor according to claim 2.

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