JP2007222079A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter with which seedlings are transplanted at a high speed without leaving hollows of wheel traces in a field and disturbing a seedling planting attitude. <P>SOLUTION: The seedling transplanter has a constitution that a seedling planting apparatus 9 is installed behind a moving body 10 and a rotator 45 for leveling soil of the trace of the rear wheels 12 of the moving body 10 is arranged before the seedling planting part 9 relatively to the advance direction of the seedling planter. Since soil of the trace of the rear wheels 12 is ground by the rotator 45 and the soil surface is leveled, planting precisions of seedling planting attitude, planting depth, etc., are excellently maintained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a field seedling transplanter for transplanting seedlings in a transplant field of a field.

A seedling transplanting machine for transplanting seedlings in a transplanting field of a field described in Patent Document 1 or the like has conventionally been provided with a ditching means, a seedling planting means, and a soil covering means for planting in the topsoil of the transplanting field by the ditching means. It is equipped with a mechanism for continuously forming the grooves and moving the seedlings into the planting grooves by seedling planting means, and then covering the seedlings in the field by covering them so as to fill the grooves for planting. ing.
Japanese Patent Laid-Open No. 2002-17118

Since the conventional seedling transplanter is configured to plant a large number of seedlings at narrow intervals in the left-right direction toward the forward direction of the transplanter, planting seedlings if the traces of the wheels remain in the field as depressions The accuracy may not be good.
Therefore, the present invention is to provide a seedling transplanting machine capable of transplanting seedlings at high speed without disturbing the planting posture of the seedling without leaving a dent of the wheel in the field.

The problems of the present invention are solved by the following means.
The invention described in claim 1 is a seedling transplanting machine (8) provided with a seedling planting part (9) on the rear side of a traveling vehicle body (10) having a traveling body (11, 12). It is a seedling transplanting machine in which a soil crushing device (41) for crushing the soil of the trace of the traveling body (12) is provided in front of the seedling transplanting unit (9) with respect to the advancement direction of the seedling transplanting machine.

  According to the present invention, since the soil breaking device (41) for breaking the soil of the trace of the traveling body (12) is provided in front of the seedling planting part (9), the traveling trace is ground and the soil surface is leveled. Therefore, planting accuracy such as the planting posture and planting depth of the seedling can be maintained well.

An onion seedling transplanter 8 as an embodiment of the present invention will be described below.
As shown in the left side view of FIG. 1, the plan view of FIG. 2, and the left side view of the latter half of the seedling transplanter in FIG. The transplanting device 9 transplants seedlings in the field while self-propelled by the traveling vehicle body 10.
In the present specification, the left and right directions in the forward direction of the seedling transplanter 8 are referred to as left and right, respectively, the forward side is referred to as front, and the reverse side is referred to as rear.

  The traveling vehicle body 10 is a so-called agricultural tractor, and includes a pair of left and right front wheels 11 and 11 and a pair of left and right rear wheels 12 and 12, a seat 13 on which a driver sits, A steering handle 14 is provided that is disposed in the front and that turns the pair of left and right front wheels 11 and 11 left and right so that the driver can change the traveling direction of the traveling vehicle body 10. The power of the engine 2 is transmitted to the hydraulic pump 4 via the transmission belt 3, and the pressure oil from the hydraulic pump 4 is sent to drive a soil crushing device 41 described later. A pair of links 16a and 16b that are rotated up and down by an elevating cylinder 15 are provided at the rear part of the traveling vehicle body 10, and the transplanting device 9 is mounted so as to be movable up and down by the links 16a and 16b.

  Engine power is transmitted from the PTO shaft 43 to the transplantation device 9 via the transmission shaft 42 of the transplantation device 9 (FIG. 3). Further, the transplanting device 9 takes out the seedling N from the seedling box supply means 17 for accommodating and transporting the seedling box C and the cells 1 (FIG. 5) of the seedling box C supplied by the seedling box supply means 17. Means PU (FIG. 5) and seedling planting means PT (see FIGS. 1 and 3) for planting the seedlings N taken out by the seedling picking means PU one by one are provided. Therefore, if the seedling box C having the seedlings N grown in each cell 1 as described above is loaded into the seedling box supply means 17, the seedlings N in each cell 1 of the seedling box C are automatically and sequentially seeded by the seedling extraction means PU. N is taken out, and the taken out seedling N is planted one by one in the field by the seedling planting means PT.

  In the seedling box C accommodated and transported in the seedling box supply means 17, a large number of small pot-shaped cells 1 containing onion seedlings are arranged vertically and horizontally. This seedling box C is made of polypropylene or the like. It is a flexible material that is integrally molded with a synthetic resin. For this reason, when the seedling box C is transferred by the seedling box supply means 17, the seedling box C can be transferred while being bent even at the bent portion of the seedling box supply means 17.

Specifically, the transplant device 9 has the following configuration.
Specifically, the seedling box supply means 17 is arranged in the vicinity of the rear side of the seat 13 of the traveling vehicle body 10 in a side view of the vehicle body, and is a seedling box serving as a place where an operator who has boarded the traveling vehicle body 10 loads the seedling box C. The loading section 17a and the seedling box C loaded in the seedling box loading section 17a are conveyed rearwardly downward, then bent and conveyed, and further as shown in the side view of the lower half of the seedling box supply means 17 in FIG. The seedling box supply / conveyance part 17b that conveys downward toward the seedling extraction position p1 by the seedling extraction means PU, and the seedling extraction means PU that are transported by the seedling box supply / conveyance part 17b are extracted and emptied. The seedling box C is bent and conveyed in a U shape, and an empty box conveyance unit 17c for conveying the seedling box C upward toward the lower position of the seedling box loading unit 17a is provided.

The seedling box C loaded in the seedling box loading section 17a is loaded in such a posture that the longitudinal direction of the seedling box C is directed in the front-rear direction and the upper surface side (opening portion of the cell 1) is directed upward. Therefore, the loaded seedling box C is transported in the longitudinal direction of the seedling box C, and the seedlings N accommodated in each cell 1 of the loaded seedling box C are leaves in the seedling box loading section 17a. The stem Nb extends upward, and at the seedling extraction position p1, the leaf stem Nb extends rearward and is transported so that the floor Na is positioned forward relative to the leaf Nb. The
In addition, the seedling box supply means 17 is provided with an empty box accommodating portion 17d (FIG. 1) that receives and accommodates an empty seedling box C that is conveyed by the empty box conveying portion 17c and discharged from its conveying end. It is supposed to be.

  The seedling box supply means 17 is supported by a support frame 18, and the base of the support frame 18 is supported by a planting part transmission case 19, and a connecting member 21 is coupled to the planting part transmission case 19. The connecting member 21 moves up and down the end portion on the seedling planting device 9 side of a three-point link mechanism comprising a single upper link 16a and a pair of lower links 16b that support the seedling planting device 9 so as to be movable up and down on the traveling vehicle body 10. It connects with the up-and-down member 22 connected to a direction.

  As shown in FIG. 5, the seedling extraction means PU is configured to extrude and extract seedlings from the bottom side of the cell 1. Specifically, the pin 24 for extruding the seedling provided in a rod shape is arranged in the U-shaped conveying portion on the lower side of the seedling box supply means 17 so that the tip portion of the pin 24 faces rearward, The tip of the pin 24 is provided so as to reciprocate at an appropriate timing so that it protrudes backward and retracts forward. As a result, the seedling pushing pin 24 enters the bottom hole provided in the bottom of the cell 1 of the seedling box C supplied up to the seedling picking position p1 and pushes the floor Na in the cell 1 backward. Thus, the seedling N is taken out from the cell 1 backward.

  In addition, the seedling extraction means PU is configured to simultaneously extract a plurality of seedlings N from the cell 1 in a row. That is, the seedling extruding pins 24 are arranged side by side corresponding to each of the cells 1... Of the seedling box C supplied to the seedling picking position p1 in the left and right horizontal rows (short direction of the seedling box C). A plurality of seedlings are provided so that the seedlings in a horizontal row at the seedling extraction position p1 are simultaneously pushed out. 5, a plurality of seedlings N... Taken out by the seedling picking means PU are sequentially seeded by the seedling planting disk 27 by the seedling feeding means NT1 having the seedling feeding belt 36 and the seedling lowering feed belt 37. It is set as the structure supplied to the seedling planting means PT which has. The seedling planting disk 27 is rotated by a planting disk drive sprocket 26 driven by a transmission shaft 42 to which a driving force from the PTO shaft 43 is transmitted.

  The seedling planting means PT is configured such that the seedling N is sandwiched between the left and right planting discs 27 (specifically, the leaves of the seedling N are sandwiched) and moved and planted in the soil of the transplanting field in the field. .

The specific drive configuration of the seedling planting means PT is as follows.
First, the planting part is connected to the connecting member 21 of the transplanting device 9 through the transmission shaft 42 provided with the universal joint 44 from the PTO shaft 43 in which the power from the engine 2 protrudes to the rear part of the traveling vehicle body 10. Input into the transmission case 19, and transmitted to the transmission shaft 33 that is long in the left-right direction of the machine body in the transmission case 19 disposed near the lower part of the lower part of the seedling box supply means 17 through the transmission mechanism in the transmission case 19, A plurality of seedling supply means NT1 provided so as to extend rearward from the transmission case 19 is rotated.

  A seedling is delivered from the plurality of seedling supply means NT1 to the seedling planting means PT, and is provided with a planting disk 27 that is rotated by a planting disk drive sprocket 26 that is driven by the drive mechanism in the planting transmission case 19 A description of a specific drive configuration for seedling planting by the seedling planting means PT or the like is omitted.

  As shown in the rear view of the essential part of the seedling box supply means 17 in FIG. 6, the seedling supply means NT1 specifically includes a pair of drive rollers 34, 34 provided so as to be driven and rotated on the left and right ends, and left and right A pair of driven rollers 35, 35 provided rotatably at the center side and a pair of seedling supply belts 36, 36 wound around both rollers 34, 34, 35, 35 are provided. Thereby, a plurality of seedlings N ... taken out by the seedling taking-out means PU and arranged in a line in the left and right lateral rows are placed on the left and right supply belts 36, 36, Then, the left half of the horizontal row of seedlings N... Is conveyed to the left by the drive rotation of the left supply belt 36, and the right half is conveyed to the right by the drive rotation of the right supply belt 36 to drive the left and right. On the upper end side of the pair of left and right seedling lowering feed belts 37 provided on the left and right outer sides of the rollers 34, 34 (seedling supply parts 26c, 26c, but only the left seedling supply part 26c is shown in FIG. 6). Then, the floor portion Na of the seedling N is supplied one by one.

  The right and left seedling planting means PT and PT planting disks 27 and 27 provided with the seedlings N supplied one by one in correspondence with the left and right seedling supply units 26c and 26c have been supplied. The seedlings are planted by moving the seedlings N and N into the soil of the transplanting field.

  In addition, protrusions 36a are provided at set intervals in the belt rotation direction on the front end side of the outer peripheral surface of the seedling supply belt 36, and one floor portion Na of the seedling N is provided on the belt upper surface between the right and left of the protrusion 36a. Thus, the seedlings placed on the upper surface of the seedling supply belt 36 can be accurately supplied to the seedling supply unit 26c one by one.

  Incidentally, there is a configuration in which the seedling N extracted by the seedling extraction means PU is provided directly on the seedling supply belts 36, 36 of the seedling supply means NT1, but in this embodiment, the seedling supply means NT1 is the seedling box supply means 17. The seedling supply means NT1 (FIG. 5) for transferring the seedling N extracted by the seedling extraction means PU is provided to the seedling supply means NT1 arranged so as to enter the seedling supply means NT1. However, it does not protrude rearward of the seedling box supply means 17 and the length of the transplanting device 9 is shortened.

  The seedling transfer means NT2 includes seedling engaging portions 56a in which the respective floor portions Na of the row of seedlings N ... pushed out by the seedling pushing pins 24 ... of the seedling taking-out means PU are engaged. The seedling holder 56 is provided, and the seedling removal position p1 and the seedling delivery position p4 in the vicinity of the upper front side of the seedling supply belts 36 and 36 are linked by a link 38 that drives and rotates the seedling holder 56 (FIG. 5). 6) are reciprocated as indicated by an arrow Y. Thus, when the seedling pushing pins 24... Are pushed out from the respective cells 1... By the seedling pushing operation, the seedling holders 56 in the seedling holder 56 located at the seedling picking position p1. The floor portion Na of the seedling N is engaged with and held by the joint portions 56a.

  Then, the seedling holder 56 rotates downward by the rotation of the link 38 and moves to the seedling delivery position p4. At this time, the tips of the second seedling push-out pins 39... Fixed in such a manner that the axis is oriented horizontally rearward in each seedling engaging portion 56 a enter into each seedling engaging portion 56 a. The combined floor portion Na of the seedling N is pushed rearward and dropped onto the seedling supply belts 36 and 36 supported by the belt support portion 58 integral with the planting portion transmission case 19. In addition, when the floor part Na ... of the seedling N engaged in each seedling engaging part 56a ... by the second seedling pushing pin 39 ... was pushed backward, it was provided in a comb shape. The seedling depressing member 40 (FIG. 6) is lowered to depress the floor portion Na of each seedling N from which the member 40 has been extruded, and the seedlings are quickly and accurately placed on the seedling supply belts 36, 36. It is provided to be. The seedling push-down member 40 is supported by the planting part transmission case 19.

  As shown in the side view of the main part of the seedling transplanting machine 8 in FIG. 3, a front pressure reducing wheel 28 for leveling the surface soil surface of the transplanting field in front of each seedling planting position by each seedling planting means PT is suspended on the fixing member 20. Yes. Further, a rolling wheel 30 is provided that is suspended from the fixing member 20 and is guided by the footsteps of the rear wheel 12 to support the transplanting device 9. Further, the transplanting device 9 includes, in one seedling box supply means 17, a seedling extraction means PU for extracting seedlings N ... one by one from the seedling box C loaded in the seedling box supply means 17, and the seedling extraction means. Seedling transfer means NT2 for transferring the seedlings N ... taken out by the PU to the seedling supply means NT1, and seedling planting means for providing the horizontal seedlings N ... transferred by the seedling transfer means NT2 on the left and right From one seedling box C comprising seedling supply means NT1 for supplying PT, PT, and left and right seedling planting means PT, PT for planting the seedling N supplied by the seedling supply means NT1 in the transplanting field Two-row planting is configured. By providing two transplantation units configured in this way on the left and right, it can be configured as four-row planting, and by providing n bodies, it can be configured as 2 × n-row planting. It has become.

  The fixing member 20 is provided with a soil loosening body 29 on the rear side of the front pressure reducing wheel 28. The soil loosening bodies 29 are supported by the planting part frame 25 (FIG. 4), and the soil loosening bodies 29 are arranged in a row corresponding to the planting disks 27 at positions corresponding to the respective planting disks 27. Yes. A seedling is planted by the planting disk 27 in the soil of the field loosened by the soil loosening body 29. The soil around each seedling N planted by the planting disk 27 is covered with a cover ring 31. The planting disk 27 and the covering ring 31 are supported by a covering ring / planting disk support frame 32 attached to the planting part frame 25 (FIG. 4) so as to be rotatable up and down. A plate 23 that guides the covering ring / planting disk support frame 32 up and down is attached to the fixing member 20.

  The traveling vehicle body 10 of the seedling transplanter 8 of the present embodiment is provided with a soil crushing device 41 for crushing a groove in a dent formed by a rear wheel 12 that can be formed in a farm field. The ground breaking device 41 is a device for erasing tire marks by loosening the groove with a rotating body 45 rotating around a vertical axis so that the groove is substantially equal to the field. The rotating body 45 is driven by a hydraulic motor 46 that is driven by hydraulic oil supplied from the hydraulic pump 4 via the hose 4a. The rotating body 45 may be driven by a mechanical means for transmitting the power of the engine 2 instead of the power from the hydraulic pump 4, or the rotating body 45 may be driven by an independent single driving source.

  In the eight-row onion seedling transplanting machine 8 of this embodiment, seedlings are also planted in the vicinity of the running trace of the rear wheel 12, so that the running trace of the tire is cultivated by the rotating body 45 of the ground breaking device 41. Since the grooves are erased and crushed, the field scene is leveled and the accuracy of the planting posture, planting depth, etc. of the seedlings can be maintained well.

  Conventionally, the groove portion of the tire mark has been cultivated with a traction device such as a cultivating nail, but the groove may not disappear if the soil mass is rough. However, the soil crushing device 41 of this embodiment rotates around the vertical axis. Since it is the body 45, the field scene can be cultivated by the rotating body that rotates around the vertical axis that rotates or swings in the horizontal direction, and the grooves are erased and crushed.

  Further, as shown in the plan view of the soil crushing device portion in FIG. 7A, a pair of soil culturing plates 47, 47 for bringing soil to the field portions cultivated on both sides of the rotating body 45 are provided. As shown in the sectional view of the field of the groove portion of FIG. 7 (b), the pair of soil-growing plates 47 and 47 can bring the soil to the groove portion cultivated by the rotating body 45, so that the ground surface sinks. Is prevented.

  If the soil is not brought close to the groove portion by the cultivating plate 47, even if the groove portion is leveled, the portion is lower than the ground and is soft, so the soil may be washed away by rain or the like, and the crop may be washed away.

  Note that the earthen plate 47 of the present embodiment is attached to the connecting member 21 so that the angle of the plane facing the vertical direction can be changed and adjusted.

  Further, as shown in the plan view of the main part of the eight-stripe transplanter 8 of this embodiment in FIG. 4A and the schematic rear view of FIG. , 12 is provided with a center wheel 49 in the rear wheel rolling frame 48 at a position substantially coincident with the central axis.

  Conventionally, when seedlings are transplanted with eight straddles, the entire surface becomes a flat surface, and when carrying out management work etc. with a work machine that performs work at half the width of the number of planting strips (width of 4 strips), the traveling vehicle body tilts Therefore, the seedlings could not be planted well. However, if the center wheel 49 is provided at a position substantially coincident with the central axis of the rear wheel 12, the above-mentioned conventional drawbacks are eliminated.

  The center wheel 49 is supported at the tip of the arm 54 by a bracket 51 provided on the rear wheel transmission case 50 of the rear axle so that the vertical position can be adjusted in conjunction with the raising and lowering of the transplanting device 9. The ground can be pressed by the weight. Further, when the center of swing of the center wheel 49 is substantially coincident with the center axis of the rear wheel 12, the grooving operation by the center wheel 49 is stabilized. When the course is changed in this way, the center wheel 49 moves in substantially the same manner as the rear wheel 12, so that there is no trouble such as dragging.

  As described above, the center ring 49 is configured to rotate up and down in conjunction with the raising and lowering of the transplanting device 9. However, the fulcrum is provided on the lower link 16 b that raises and lowers the transplanting device 9, and the spring that moves the center ring 49 up and down. The center ring 49 is connected to the lower end of the rod 53 with 52, and the upper end of the rod 53 is attached to the lower ring 16b (FIG. 3).

  According to the above configuration, when the transplantation device 9 is raised, the center ring 49 rises in conjunction with the transplantation device 9, so that the transplantation device 9 can be easily maintained.

  In addition, the size approximately equal to or slightly larger than the outer dimension of the empty seedling box C via hooks 55a on the mounting frames 55 on both sides of the traveling vehicle body 10 at a substantially intermediate portion between the traveling vehicle body 10 and the transplanting device 9. The empty seedling box storage stand 57 is provided so as to be detachable from the traveling vehicle body 10 and thus the machine body 12. Therefore, the seedling box C that has been transplanted and emptied can be placed in the empty seedling box storage stand 57 by simply dropping the seedling box C into the storage stand 57, so that the seedlings placed separately one by one can be stacked. This saves you the trouble of carrying it to the frame and allows you to concentrate on the transplanting work.

  Moreover, as shown in the plan view of FIG. 8, the empty seedling box storage stand 57 has a door 57a that opens outward, and the empty seedling box can be taken out at once by opening the door.

  The present invention can be used for a field seedling transplanter.

It is a left view of the seedling transplanter of one Example of this invention. It is a top view of the seedling transplanting machine of FIG. It is a principal part left view of the seedling transplanting machine of FIG. They are a principal part top view (FIG. 4 (a)) and principal part rear view (FIG.4 (b)) of the seedling transplanting machine of FIG. It is a principal part left view of the seedling supply means of the seedling transplanter of FIG. It is a principal part rear view of the seedling supply means of the seedling transplanting machine of FIG. FIG. 8 is a schematic plan view (FIG. 7 (a)) of a soil crushing device portion of the seedling transplanter in FIG. 1 and a state of leveling a farm scene using the soil crushing device. It is a top view of the empty seedling box storage stand of the seedling transplanter of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cell 2 Engine 3 Transmission belt 4 Hydraulic pump 4a Hose 8 Seedling transplanter 9 Transplanting device 10 Traveling vehicle body 11 Front wheel 12 Rear wheel 13 Seat 14 Steering handle 15 Lifting cylinder 16a Upper link 16b Lower link 17 Seed box supply means 17a Seed box loading Portion 17b Seedling box supply transport unit 17c Empty box transport unit 17d Empty box storage unit 18 Support frame 19 Planting unit transmission case 20 Fixing member 21 Connecting member 22 Vertical member 23 Plate 24 Pin for seedling extrusion 25 Planting unit frame 26 Planting Attached disk drive sprocket 26c Seedling supply part 27 Planted disk 28 Front pressure reducing wheel 29 Earth loosening body 30 Rolling wheel 31 Covering ring 32 Covering ring / planting disk support frame 34 Drive roller 33 Transmission shaft 35 Driven roller 36 Seedling supply belt 36a Projection 37 Seedling lowering feed belt 38 Link 39 Seedling extruding pin 40 Seedling depressing member 41 Crushing device 42 Transmission shaft 43 PTO shaft 44 Universal joint 45 Rotating body 46 Hydraulic motor 47 Soil plate 48 Rear wheel rolling frame 49 Center wheel 50 Rear wheel transmission case 51 Bracket 52 Spring 53 Rod 54 Arm 55 Mounting frame 55a Hook 56 seedling holder 56a seedling engaging part 57 empty seedling box storage stand 57a door 58 belt support part C seedling box N seedling PU seedling removal means PT seedling planting means Na floor part Nb leaf stem NT1 seedling supply means NT2 seedling transfer means p1 Seedling removal position p4 Seedling delivery position

Claims (1)

In the seedling transplanting machine (8) provided with the seedling planting part (9) on the rear side of the traveling vehicle body (10) having the traveling bodies (11, 12),
A seedling characterized in that a soil crushing device (41) for crushing the soil of the track of the traveling body (12) of the traveling vehicle body (10) is provided in front of the seedling transplanting section (9) with respect to the direction of advance of the seedling transplanter. Transplanter.

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