JP4695569B2 - Transplanter - Google Patents

Description

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

A planting work machine is connected to the rear of the traveling machine body, and a ground breaking rotor is provided on the side of the planting work machine as a leveling rotor so as to be positioned between the rear wheel of the traveling machine body and the planting work machine, and the rotor is driven to rotate. There is known a riding rice transplanter (see Patent Document 1) that can perform planting work while leveling a farm scene.
JP-A-8-130905

  However, since the rotor of the riding rice transplanter is made of metal and is heavy, there is a drawback that a relatively large driving force for the rotor is required and the total weight of the airframe increases. In particular, since the weight on the rear side (planting machine side) becomes heavy, the balance between the front and rear of the weight deteriorates, and if a heavier weight is attached on the front side in order to balance the front and rear, the weight increases further. There were drawbacks.

In order to solve the above-mentioned problems, the transplanter of the present invention firstly supports a plurality of leveling members 37 that are rotatably supported in front of the planting work machine 4 so as to level the farm scene as it rotates, and the leveling members. In the transplanting machine having the leveling rotor 13 provided with the connecting member 38 attached to the rotor shaft 14 by connecting the shaft 37 around the axis, the leveling rotor 13 is scratched only on the surface layer portion of the field after scraping. The connecting member 38 is formed with an insertion hole 45 for being directly attached to the rotor shaft 14, and the leveling rotor 13 is divided and formed by a plurality of divided pieces 36, and each divided piece 36 has the same shape. The end portion of the leveling member 37 that is integrally formed of synthetic resin so as to have the leveling member 37 and the connecting member 38 and that forms the tooth portion 41 protrudes to the outer periphery of the connecting member 38, and the divided pieces 36 are brought into contact with each other and fixed. This Is ground leveling rotor 13 is characterized in that attached to the rotor shaft 14 by.

  Secondly, the leveling member 37 is formed so as to protrude from the apex portion protruding from the outer periphery of the connecting member 38 in a side view.

  According to the structure of the present invention configured as described above, the leveling rotor can be reduced in weight, the driving power of the leveling rotor can be reduced, and the planting machine side in the transplanter is also reduced in weight. Therefore, the total weight of the transplanter can be reduced, and the front-rear balance of the transplanter can be improved. Further, since it is made of resin, there is no rust, and there is an effect that adhesion of mud can be prevented by the resin surface, and in addition, there are effects that the number of processing steps can be reduced and the cost of the rotor can be reduced.

  In particular, by placing the planting machine behind the traveling machine and providing a leveling rotor between the rear wheel of the traveling machine and the planting machine, the rear side of the transplanting machine is reduced in weight, so the head of the traveling machine is raised. It is possible to reduce the gravity of weights and the like, which is effective in reducing the total weight of the transplanter body.

  Further, the leveling rotor can be easily maintained by dividing the leveling rotor into a plurality of divided pieces around the fulcrum shaft and integrally forming the divided pieces with resin. At this time, since each divided piece is made of resin, it is lightweight and can be attached and detached particularly easily. Further, since the entire leveling rotor is made of resin, the entire leveling rotor can be reduced in weight. .

  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 equipped with a leveling rotor according to the present invention. The riding rice transplanter has a planting work machine 4 behind a traveling machine body 3 supported by front and rear wheels 1 and 2 as in the prior art. The structure is connected via a lift link 6 so as to be movable up and down and rollable. At this time, the planting work machine 4 is obliquely provided with a seedling platform 7.

  Further, a vertical frame 8 in the vertical direction and a horizontal frame that is integrally fixed to the vertical frame 8 and that is horizontally provided below the vertical frame 8 in the horizontal direction are provided on the front (back) side of the seedling stand 7. 9 are provided. A plurality of planter cases 11 are attached to the side of the horizontal frame 9, and the planting work machine 4 scrapes the seedlings on the seedling placing stand 7 with a beak 12 provided on the planter case 11 and plantes them on the field. It has a configuration.

  On the other hand, on the planting work machine 4 side, the leveling rotor 13 is rotatably driven by a fulcrum shaft (rotor shaft) 14 over substantially the entire width of the riding rice transplanter so as to be positioned between the planting work machine 4 and the rear wheel 2. The ground leveling rotor 13 is grounded and rotated at a headland in a field after scraping, which is rough due to turning of the traveling machine body 3 during planting work, and the like. Leveling is possible. Since the leveling rotor 13 is arranged in front of the planting work machine 4, the riding rice transplanter can plant seedlings on a headland or the like after leveling by the leveling rotor 13.

  Next, a support structure for the leveling rotor 13 will be described. As shown in FIGS. 1 and 2, a horizontal shaft 16 is rotatably supported between the upper sides of the vertical frames 8, and arms 17 are provided on both left and right sides of the shaft 16. Projected. The distal end of each rod 17 is pivotally connected to the distal end of the rod 18 so as to be rotatable.

  A support rod 19 is pivotally connected to the lower ends of the left and right rods 18, and the rotor shaft 14 of the leveling rotor 13 is rotatable in the left and right directions at the lower ends of the support rods 19. It is pivotally supported. The leveling rotor 13 is pivotally supported by the rotor shaft 14, that is, the leveling rotor 13 is supported by the planting work machine 4 as described above.

  At this time, a bracket 21 protrudes forward from the left and right sides of the horizontal frame 9, and a cylindrical guide 22 is attached to the tip of the bracket 21 in the vertical direction. The support rod 19 is slidably inserted into the guide 22. Further, a lever 23 projects from the shaft 16, and the shaft 16 is configured to rotate when the lever 23 swings.

  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. The height of the leveling rotor 13 attached so as to rotate integrally with the rotor shaft 14 is adjusted by sliding and moving the rotor shaft 14 up and down.

  The lever 23 is inserted into a lever guide 24 fixed to the vertical frame 8, and the height of the leveling rotor 13 is secured by locking the lever 23 to one of a plurality of steps provided in the lever guide 24. Are adjusted in stages. Further, a spring 26 is stretched between the shaft 16 and the support rod 19 side, and the operating force of the lifting operation of the leveling rotor 13 by the lever 23 is reduced.

  On the other hand, a gear case 27 is provided at an intermediate portion of the rotor shaft 14, and a rotor drive case 28 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 from the rotor driving case 28 via the universal joint 29 by the driving shaft 31. Thus, by operating the clutch provided in the rotor drive case 28 to the entry side, the rotor shaft 14 is driven to rotate, and the leveling rotor 13 is driven to rotate.

  Next, the configuration of the leveling rotor 13 will be described. 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.

  At this time, as shown in FIG. 3, each leveling rotor 13 is symmetrically divided into two with the rotor shaft 14 in between, and is constituted by a combination of two divided pieces 36 and 36, and is generally correct in a side view. It has a saddle shape that is a hexagon. Each divided piece 36 connects a plurality of plate-shaped leveling members 37 that scratch the field scene as it rotates, a connection member 38 that connects the leveling members 37 on both the left and right sides, and a leveling member 37 that is connected at the approximate left and right centers. The reinforcing member 39 is constituted.

  Further, the leveling member 37, the connecting member 38, and the reinforcing member 39 are integrally formed of resin, and the end portions of the leveling member protrude outside the connecting member. The end portion of the leveling member 37 is formed in a wave-like tooth portion 41. At this time, 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 across the rotor shaft 14. .

  Then, the two split pieces 36 are symmetrically fixed integrally with the bolts 42 and the nuts 44 with the rotor shaft 14 in between so that the bolt seat 43 of one split piece 36 and the nut hole 46 of the other split piece 36 face each other. Thus, the leveling rotor 13 is formed. Each connecting member 38 is formed with a semicircular cutout portion 47 through which the rotor shaft 14 is inserted. By connecting both the connection members 38, the cutout portions 47 of the circular rotor shaft 14 are seen in a side view. An insertion hole 45 is formed.

  An insertion hole 49 for inserting a pin 48, which will be described later, is formed in the inner peripheral surface of the notch 47. The pin 48 is inserted so as to be orthogonal to the axis of the rotor shaft 14, and both divided pieces are inserted. Both split pieces 36 are attached to the rotor shaft 14 from the circumferential surface side so that the rotor shaft 14 is sandwiched by the notch portions 47 of the 36, and at this time, both ends of the pin 48 are inserted into the insertion holes 49 of the respective split pieces 36. The leveling rotor 13 is integrally attached to the rotor shaft 14 by fixing the two divided pieces 36 with the bolts 42 and the nuts 44 as described above.

  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). Further, the two divided pieces 36 constituting the leveling rotor 13 have the same shape, and only one mold is required. In addition, three leveling members 37 are attached to each divided piece 36. When the divided pieces 36 are assembled as the leveling rotor 13, each leveling member 37 is positioned at each apex portion of a regular hexagon in a side view.

  The leveling rotor 13 is configured as described above, and is composed of the two resin-made divided pieces 36. Therefore, the entire leveling rotor 13 is made of resin, and the leveling rotor 13 is reduced in weight, and the leveling The drive power of the rotor 13 can be small. Moreover, since the leveling rotor 13 is lightweight, the planting work machine 4 to which the leveling rotor 13 is attached is also reduced in weight, and the total weight of the riding rice transplanter is also reduced.

  In addition, since the leveling rotor 13 is made of resin, generation of rust on the leveling rotor 13 is prevented, and mud adhesion is also prevented by the resin surface. In addition, since the leveling rotor 13 can be manufactured by resin molding using a mold, the number of processing steps is small, and the cost of the leveling rotor 13 can be reduced.

  Further, the weight reduction of the planting work machine 4 is a weight reduction on the rear side of the riding rice transplanter, and the weight of the weight attached to the front side of the traveling machine body 3 to prevent the head up of the traveling machine body 3 is small. The front / rear balance of the passenger rice transplanter is improved along with the weight reduction of the entire passenger rice transplanter.

  Since the leveling rotor 13 can be detached from the radial direction (circumferential surface direction) of the rotor shaft 14 by releasing the fixing of the divided pieces 36, only the necessary leveling rotor 13 is disassembled and the leveling rotor 13 is used. Maintenance of the rotor 13 can be easily performed. At this time, since each divided piece 36 is made of resin, it is lightweight, and the attaching / detaching work can be performed particularly easily.

  Further, the leveling rotor 13 performs leveling such as a headland in a field after cutting, and the leveling rotor is scraped only at the surface layer portion of the soil cultivated during planting work. You may employ | adopt for the rotor for scraping of the hello rice transplanter which performs the seeding planting operation | work which plants a seedling in the field which was scratched at the same time as seeding.

It is a side view of a riding rice transplanter. It is a planting machine principal part front view. (A) is a side view of a single rotor for leveling, and (b) is a rear view.

4 Planting machine
13 Rotor for leveling 14 Rotor shaft 36 Dividing piece 37 Leveling member 38 Connecting member 41 Tooth part 45 Insertion hole

Claims (2)

A plurality of leveling members (37) that are rotatably supported in front of the planting work machine (4) and level the farm scene with rotation, and the leveling members (37) are connected around the axis to provide a rotor shaft. In the transplanter having the leveling rotor (13) provided with the connecting member (38) to be attached to (14), the leveling rotor (13) is grounded to the field after scraping and rotated to perform leveling. The connecting member (38) is formed with an insertion hole (45) for direct attachment to the rotor shaft (14), and the leveling rotor (13) is divided and formed by a plurality of divided pieces (36). And each division | segmentation piece (36) is integrally formed by a synthetic resin so that it may have the leveling member (37) and a connection member (38) in the same shape, and the leveling member (37) which forms a tooth | gear part (41) Projecting on the outer periphery of the connecting member (38) And, divided pieces (36) transplanter for ground leveling rotor (13) is attached to the rotor shaft (14) by contacting with each other and fixed.   The transplanting machine according to claim 1, wherein the leveling member (37) is protruded from the apex portion protruding from the outer periphery of the connecting member (38) in a side view.

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