JP6132777B2 - Direct seeding machine - Google Patents

Description

  The present invention includes a hopper that stores seed pods and a plurality of feeding sections that feed out seed pods stored in the hopper and supply the seed pods to the rice field, so that the seed potatoes are supplied to a plurality of locations in the horizontal direction of the rice field. The present invention relates to a direct seeder equipped with a configured seeding device.

As the direct seeding machine as described above, there is a structure using the following technique.
A fertilizer storage part located on the front side and a seed storage part located on the rear side are formed inside a hopper partitioned back and forth by a partition wall, and a fertilizer is provided at the lower part side of each storage part. And seeds are separately fed, fertilizer is supplied to the rice field from a fertilizer hose provided on the lower end side of the feeding part, and seeds are supplied from the seed hose to the rice field (see Patent Document 1) .

JP-A-9-28124 (see paragraph numbers “0013” and “0018”, FIG. 1, FIG. 3 and FIG. 4)

In what is described in Patent Document 1, a fertilizer storage part is formed on the front side of the seed storage part, and a fertilizer hose and a seed hose are connected to the feeding part provided on the lower side of each storage part, Fertilizer and seeds are supplied. Of the fertilizer hose and the seed hose, the seed hose is connected to a grooving device disposed at regular intervals in the left-right direction. And the fertilizer hose is connected to the fertilizer groove for fertilizer whose space | interval in the left-right direction is unequal.
Thus, if it is a fertilizer grooving machine, since it is not necessary to set the arrangement | positioning space | interval in the left-right direction equivalent to the space | interval of the seedling grown after that, it can determine arbitrarily. However, since the seed grooving device needs to keep the intervals between the seedlings grown thereafter at a predetermined fixed interval, the arrangement interval is limited to a predetermined equal interval. For this reason, the number of strips that can be seeded with a seeding device having a predetermined lateral width provided in the direct sowing machine is the sum of the intervals between the seed groovers.
Therefore, in a seeding machine in which the interval between the seed groovers is set between general strips, it is not possible to perform dense seeding between narrow strips than general strips.

In the seeder described in Patent Document 1, if the arrangement interval in the left-right direction of the seed grooving device is narrowed, it is in a state of dense seeding within the range of the location where the arrangement interval is narrowed. Although it is possible, the horizontal width of the entire seeding device remains wide unless the horizontal width of the hopper for storing the seed potato or the feeding portion changes.
For this reason, even if the arrangement interval of the seed groovers is narrowed so that only a part of the passing marks of the traveling machine body is densely sown, seeds are present in the other parts of the passing marks of the traveling machine body. It is not practical because it is not sown.

  The present invention is intended to provide a direct sowing machine capable of dense seeding while avoiding an increase in cost due to a large design change, which greatly reduces the lateral width of the hopper and feeding part for storing seed potatoes. is there.

[Solution 1]
The technical means of the seeding machine in the present invention taken to solve the above problems comprises a hopper that stores seed pods, and a plurality of feeding sections that feed out seed pods stored in the hopper and supply them to the rice field. A pre-seeding device configured to supply seed pods to a plurality of locations in the left-right direction of the rice field, a hopper for storing the seed pods on the rear side of the pre-seeding device, and feeding out the seed pods stored in the hopper A plurality of feeding sections to be supplied to the rice field, and a post-seeding device configured to supply seed rice to the rice field at a different location in the left-right direction from the supply location of the sowing seed by the pre-sowing device. That's what it means.

[Operation and effect of invention according to Solution 1]
According to the configuration of the present invention according to the above solution 1, the planter includes a pre-sowing apparatus and a post-sowing apparatus that can supply seed pods at a plurality of locations in the left-right direction of the rice field. Seeds by the post-seeding device are supplied to the rice field at different locations. That is, the distance in the left-right direction between the seed sowing units by these pre-seeding device and the post-seeding device is the position where the pre-sowing device or the post-seeding device is supplied with the seed soot and the position closest to the supply location in the left-right direction It becomes an interval with the supply point of the seed pod by the post-seeding device or the pre-seeding device.
Therefore, it is not necessary to set the spacing in the left-right direction between the supply points of the seed sows only with the pre-seeding device or only with the post-seeding device. It is possible to set by effectively utilizing the positional deviation at. This eliminates the need for a design change that greatly reduces the lateral width of the hopper for storing the seed potato and the feeding part, and has the advantage that a direct seeder capable of dense seeding can be obtained while avoiding an increase in cost due to the specification change. .

[Solution 2]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the distance in the left-right direction between the feeding locations of the sowing seeds by the post-seeding device is the left-right direction between the feeding locations of the sowing seeds by the previous sowing device. It is that it is equal to the interval of.

[Operation and effect of invention according to Solution 2]
According to the configuration of the invention relating to the above solution 2, the distance in the left-right direction between the supply points of the seed sow by the pre-seeding device and the distance in the left-right direction of the supply points of the seed sow by the post-seeding device are equal. Yes, since it is possible to set the supply interval of the seed pod by effectively using the positional deviation in the left-right direction between the pre-seeding device and the post-seeding device, the pre-seeding device and the post-seeding device are A common apparatus can be used in which the intervals in the left-right direction between the supply points of the soot seeds are equal to each other.
Therefore, compared with the case where the pre-seeding apparatus and the post-seeding apparatus are configured with different specifications, there is an advantage that many parts can be shared and the cost can be easily reduced.

[Solution 3]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the hopper provided in each of the pre-seeding device and the post-seeding device is oscillated in the left-right direction located on the front end side of each hopper. This means that a lid that can be pivoted up and down around the fulcrum is provided and can be opened and closed from the rear side.

[Operation and effect of invention according to Solution 3]
According to the configuration of the invention relating to the above solution 3, it is easy to easily supply the seed pods to each of the pre-seeding apparatus and the post-seeding apparatus.
In other words, the seed hoppers are stored in the hoppers of the pre-seeding device and the post-seeding device, not fertilizers or drugs, but these seed pods are supplied to the rice field per unit area compared to fertilizers and drugs. The amount is much less. For this reason, if the required amount of seed pods is supplied to the hoppers of the pre-seeding device and the post-seeding device at the start of the work, there is little need to replenish the seed potatoes during the work in the field. It is common.
Therefore, if the lid provided in each of the pre-seeding device and the post-seeding device is configured to be easily opened and closed from the rear side of the machine body, it is possible to facilitate the operation of supplying the seed potatoes from the cocoon. There is an advantage that it is possible to easily supply the seed potatoes without requiring a supply operation in a posture where it is difficult to perform the operation, such as leaning from the top to the rear side and supplying the seed varieties to the seeding device.

[Solution 4]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that a plurality of the feeding units provided in each of the pre-seeding device and the post-seeding device are: That is, the disposition position and the disposition position of the feeding portion in the post-seeding apparatus are disposed so as to be located above the location where the seed meal is supplied to the rice field.

[Operations and effects of invention according to Solution 4]
According to the configuration of the invention relating to the solving means 4 described above, the arrangement positions of the plurality of feeding portions provided in each of the pre-seeding apparatus and the post-seeding apparatus are respectively the positions above the supply points of the seed pods to the rice field. From this, it is possible to shift the supply location to the rice field in the left-right direction simply by dropping the soot seed fed from the feeding section as it is.
Therefore, it is not necessary to guide the seeds fed from the feeding unit while changing the dropping direction to an appropriate place by using a separate supply hose, etc., and it is easy to simplify the structure.

[Solution 5]
The other technical means of the present invention taken to solve the above-mentioned problem is that the pre-seeding device and the post-seeding device have the same height in the vertical direction at the upper end of each hopper provided respectively in the front or back. That is, they are configured to be almost the same.

[Operation and effect of invention according to Solution 5]
According to the configuration of the invention relating to the above solution 5, since the vertical heights at the upper ends of the hoppers of the pre-seeding device and the post-seeding device are configured to be the same or substantially the same in the front and rear, It is easy to perform the seed sowing supply operation for the seeding device and the seed sowing device for the post-seeding device from the rear side as well.
Therefore, the post-seeding device is high and it is difficult to supply seed potatoes from the rear side to the pre-seeding device, or conversely, the pre-seeding device is high and it is difficult to largely open the lid of the post-seeding device to the front side. This is advantageous in that there is little risk of hindering the seed supply operation.

[Solution 6]
Another technical means of the present invention taken in order to solve the above problems is that the pre-seeding device and the post-seeding device each include a plurality of the hoppers arranged in the left-right direction, and each hopper provided in each of them. That is, the vertical height at the upper end of each is configured to be the same or substantially the same in the left-right direction.

[Operations and Effects of Invention According to Solution 6]
According to the configuration of the invention relating to the above solution 6, the pre-seeding device and the post-seeding device are configured such that the vertical height at the upper end of each hopper is the same or substantially the same in the left-right direction. When supplying seed potatoes to each hopper, a heavy bag containing seed potatoes can be supplied while being temporarily placed on the adjacent hopper in the left-right direction, making it easy to supply seed potatoes. There is an advantage that it is easy.

[Solution 7]
Another technical means of the present invention taken in order to solve the above-mentioned problems is that either the pre-seeding device or the post-seeding device is provided with a leveling float for leveling the surface of the seeding target position. It is that.

[Operation and effect of invention according to Solution 7]
According to the configuration of the invention according to the above solution 7, since either the pre-seeding apparatus or the post-seeding apparatus is provided with a leveling float that leveles the surface of the seeding target position, each seeding apparatus and the surface Thus, there is an advantage that it is easy to perform good sowing by stably maintaining the interval between and the number of mud pushes is less likely to occur as in the case where the leveling float is provided in both the front and rear seeding devices.

[Solution 8]
Other technical means of the present invention taken in order to solve the above-mentioned problems are that, among the pre-sowing device or the post-sowing device, a plurality of the hoppers, a plurality of feeding portions, and a plurality of the leveling floats The pre-sowing device or the post-sowing device as provided is constituted by an assembly of sowing units in which the hopper and the feeding portion are combined for each leveling float.

[Operation and effect of invention according to Solution 8]
According to the configuration of the invention according to the above solution 8, the sowing unit in which the hopper and the feeding portion are combined for each leveling float is configured, and the pre-seeding device or the post-seeding device is configured by the aggregate of the sowing units. Therefore, there are advantages that it is easy to perform assembly and disassembly for each sowing unit and to perform maintenance work.

It is a whole side view of a riding type direct seeding machine. It is a whole top view of a riding type direct seeding machine. It is the whole rear view of a sowing apparatus. It is a schematic plan view which shows the arrangement | positioning of a 1st-15th supply line, the arrangement | positioning of a front and back delivery part, and the transmission structure to a front and back delivery part. It is the whole sowing apparatus side view. It is a side view which shows the state which operated the back hopper, the back extension part, the groove making device, and the guide member to the non-working attitude | position. It is a schematic plan view which shows arrangement | positioning of a 1st-15th supply line, a front and back feeding part, a groove device, a float, a rear wheel, a leveling member, etc. It is a rear view of a front hopper, a front feeding part, a groove forming device and a guide member, a float, etc., and a rear hopper, a rear feeding part, a groove forming device, a guide member, and the like. It is a whole perspective view which shows structures, such as a horizontal frame and a vertical frame, in a sowing apparatus. It is a rear view which shows a left rear hopper, a back feeding part, a groove production device, a guide member, etc. It is a rear view which shows a right rear hopper, a rear extension part, a groove production device, a guide member, etc. It is explanatory drawing which shows the linkage structure of a leveling member, a groove cutter, and a clutch member. It is a rear view which shows support structures, such as a mudguard board, a leveling member, and a grooving machine. It is a fragmentary sectional view which shows the latching structure of the rod for operation of a groove cutter. It is explanatory drawing which shows a sowing pattern. It is the whole sowing apparatus side view in another embodiment. It is a schematic plan view which shows arrangement | positioning of the 1st-15th supply line in another embodiment, a front and back delivery part, a groove production device, a float, a rear wheel, a leveling member, etc. It is a top view which shows the float in another embodiment.

[Overall configuration of direct seeder]
As shown in FIGS. 1 and 2, a seeding device 5 is provided at the rear of the traveling machine body supported by the front wheels 1 and the rear wheels 2. The seeding device 5 is connected to a link mechanism 3 provided at the rear of the traveling machine body, and is supported by a hydraulic cylinder 4 that swings the link mechanism 3 up and down so as to swing up and down.
The seeding device 5 is a 15-row type that supplies seed rice in a sprouting state to the rice field G in a spot sowing state, with a pre-seeding device 5A positioned on the front side in the traveling direction, And a post-seeding device 5B positioned on the side. This seeding device 5 is supported by the rear part of the traveling machine body to constitute a riding type direct seeder as an example of a direct seeder.

[Seeding equipment]
The overall configuration of the seeding device 5 will be described.
As shown in FIGS. 1 to 5, the seeding device 5 includes a pre-seeding device 5A positioned on the front side in the traveling direction and a post-seeding device 5B positioned on the rear side. The post-seeding apparatus 5B has a structure supported by a frame-shaped seeding support frame 5C shown in FIG.
The sowing support frame 5C includes a horizontal frame 6 along the left-right direction on the front side, a horizontal frame 9 along the left-right direction on the rear side, the right and left sides of the front and rear horizontal frames 6, 9, and the right and left ends. The left vertical frame 16 is connected to form a rectangular frame shape in plan view.

  Another rear upper horizontal frame 8 is located at a position overlapping with the rear horizontal frame 9 in plan view via a plurality of vertically oriented frames 30 and 44, 45 erected on the upper side of the rear horizontal frame 9. Are connected in series. Four vertical frames 17 are connected along the front-rear direction from the lower side of the front side horizontal frame 6 toward the rear side. At the rear end of the vertical frame 17, a plurality of vertically oriented frames 21 are provided above the vertical frame 17, and a front upper horizontal frame 22 is supported via the vertically oriented frame 21.

  As shown in FIGS. 5 and 9, a vertical frame 10 is connected to the right and left sides of the horizontal frame 6, and horizontal frames 11 and 12 are connected to the upper and middle portions of the frame 10. Has been. A rolling shaft 13 is connected to the central portion of the horizontal frame 6 and protrudes forward. In the link mechanism 3, a boss portion 14 a is connected to the lower end portion of the vertical hitch frame 14, and the rolling shaft 13 is rotatably supported by the boss portion 14 a of the hitch frame 14. A right spring 15 and a left spring 15 are connected to the upper part of 10.

As shown in FIGS. 1 and 5, in a state where the seeding device 5 is supported at the rear part of the machine body, the seeding device 5 is supported in a state of being returned to a state parallel to the machine body by the biasing force of the spring 15. A rolling operation is configured around the front and rear axis P1 of the rolling shaft 13 along the surface G.
As shown in FIGS. 5 and 9, the right and left receiving portions 6a are connected to the right and left portions of the rolling shaft 13 in the horizontal frame 6. When the link mechanism 3 is raised to the upper limit, the link mechanism 3 The right and left stoppers (not shown) provided in the contact with the receiving portion 6a of the horizontal frame 6 are held so that the seeding device 5 does not roll.

  As shown in FIGS. 1, 2 and 9, brackets 6b are connected to the right and left end portions of the horizontal frame 6, and the right and left markers 18 forming the mark of the next work process on the surface G are arranged in the horizontal frame 6. The bracket 6b is supported so as to be swingable up and down around the longitudinal axis p2. As a result, the right and left markers 18 are operated in a working posture in which a ground is formed on the surface G and a mark is formed on the surface G, and in a retracted posture positioned above the surface G.

  As shown in FIG. 9, a bracket 16 a having a U-shaped cross section is connected to the front end portion of the vertical frame 16 in the front-rear direction. The right and left guard members 19 obtained by bending the round pipe into a crank shape are supported by the bracket 16a of the vertical frame 16 so as to be rotatable around the front and rear axis P3. As shown in FIGS. 2 and 9, the guard member 19 is provided in a range extending from the front feeding portion 20 of the pre-seeding apparatus 5A to the rear feeding portion 48 of the rear sowing apparatus 5B.

The state shown in FIGS. 2 and 9 is a state in which the guard member 19 is fixed in a horizontal posture by a fixing pin (not shown), and a range extending from the front feeding portion 20 to the rear feeding portion 48 of the seeding device 5 in the horizontal posture. The guard member 19 protects the right and left sides.
When the guard member 19 is changed to a downward posture on the road or the like and fixed with a fixing pin, the guard member 19 can be used as a stand of the seeding device 5 when the seeding device 5 is lowered to the ground.

  As shown in FIGS. 5, 7, and 9, a vertical frame 61 is connected to a portion corresponding to the rear of the rear wheel 2 in the horizontal frame 6 and extends forward, and is directed vertically to the front end of the vertical frame 61. The frame 62 is connected to the upper end of the frame 62 and a frame 63 facing left and right is connected. A flat mudguard plate 64 that stops mud that the rear wheel 2 jumps backward is connected to the frames 62 and 63.

As shown in FIGS. 5 and 7, a grooving device 87 for forming a drainage groove on the surface G is provided at the lower end portion of the frame 62 which is directed vertically on the lower side of the mudguard plate 64.
The grooving device 87 includes a central portion 87a having a triangular shape with a cross section facing downward, and a flat horizontal plate portion 87b extending to the right and left sides of the central portion 87a. The lower end portion is supported so as to be swingable up and down around the horizontal axis P7 in the left-right direction. Further, the groove cutter 87 is configured such that the position of the horizontal plate portion 87b with respect to the central portion 87a can be changed up and down relatively around the horizontal axis P7. Thus, the drainage grooves are formed on the surface G by the central portion 87a of the groove cutter 87, and mud that rises to the right and left side of the formed groove is left and right lateral plate portions of the groove cutter 87. Press at 87b to smooth.

As shown in FIGS. 5 and 12 to 14, a rod 89 is connected to the rear end portion of the central portion 87 a of the groove cutter 87, and the lower limit position of the rear portion of the groove cutter 87 is determined by the rod 89. It is configured to be.
A compression spring 90 is attached to the lower end side of the rod 89 so as to be elastically urged downward. The rod 89 passes through the rear portion of the groove cutter 87 and is fixed by a fixing bolt 89a on the lower surface side of the central portion 87a. As a result, the groove cutter 87 is configured to be displaceable upward around the horizontal axis P7 within the contractible range of the compression spring 90.
An engaging body 89b is integrally fixed to the intermediate portion of the rod 89 by welding, and the engaging body 89b can be engaged with and disengaged from a bracket 88 extending forward from the intermediate portion of the frame 10 in the vertical direction. It is configured.

That is, the engaging pin 88a that can be engaged with any one of the engaging recesses 89c formed at the two upper and lower portions of the engaging body 89b is fixed to the front portion of the bracket 88. And the press body 88c for pressing the rod 89 from the back side to the front side is inserted in the long hole 88b formed in the position near the rear part of the bracket 88, and the press body 88c is urged toward the front side. A coil spring 88d is stretched between the retaining pin 88e on the front end side of the bracket 88 and the pressing body 88c.
Therefore, as shown in FIG. 5, when the groove cutter 87 is in the groove cutting position, the engagement recess 89 c formed at the upper portion of the engagement body 89 b is engaged with the engagement pin 88 a of the bracket 88. Positioned in the state. From this state, the rod 89 is swung backwards against the urging force of the coil spring 88d, the engagement between the engagement pin 88a and the engagement recess 89c at the upper portion is released, and the rod 89 is pulled up. When the engaging recess 89c on the lower side of the engaging body 89b is engaged with the engaging pin 88a, the grooving device 87 is pulled up to the upper side of the surface as shown in FIG. Maintained.
In this way, by changing the engagement position of the engagement body 89b of the rod 89 with respect to the engagement pin 88a of the bracket 88, the lower limit position of the rear portion of the groove cutter 87 can be changed up and down.

  As shown in FIG. 7, when the groove cutter 87 is provided, the groove cutter 87 is located in the fourth and twelfth supply lines L4 and L12. The rear wheel 2 is set in front of the grooving device 87, and two leveling members 67 are arranged on the right and left sides of the grooving device 87.

  As shown in FIG. 7, when the grooving device 87 is located in the fourth and twelfth supply lines L4 and L12 and is operated in the grooving action state as shown in FIG. No seeds are supplied to the lines L4 and L12. As shown in FIG. 12, when the grooving device 87 is pulled up to the upper side of the paddle and is operated to the grooving release position, seeds are supplied to the fourth and twelfth supply lines L4 and L12. .

That is, the operation wire 92 is connected to an intermediate portion of the rod 89 for changing the position of the groove cutter 87 up and down. The operation wire 92 is connected via a linkage mechanism (not shown) so as to operate the clutch member 75b that transmits power to the rear extension 48 corresponding to the fourth and twelfth supply lines L4 and L12, as shown in FIG. Are linked.
As shown in FIG. 5, the engaging recess 89 c formed at the upper portion of the engaging body 89 b provided in the rod 89 engages with the engaging pin 88 a of the bracket 88, so that the grooving device 87 is in the grooving position. In this state, the clutch member 75b that transmits the power to the rear feeding portion 48 corresponding to the fourth and twelfth supply lines L4 and L12 is forced to move to the clutch disengagement position against the pressing biasing force of the spring 75c. Is done.
As shown in FIG. 12, the engagement recess 89c formed at the lower portion of the engagement body 89b engages with the engagement pin 88a of the bracket 88, and the groove cutter 87 In the state of being in the release position, the clutch member 75b that transmits power to the rear extension 48 corresponding to the fourth and twelfth supply lines L4 and L12 is operated to the clutch engagement position by the pressing biasing force of the spring 75c.

  The rod 89 and the bracket 88 are provided at two locations on the left and right sides, and are configured to switch the left and right grooving devices 87 to the grooving action position and the grooving release position by switching the left and right respectively. .

As shown in FIGS. 5, 7, and 13, the rake-like leveling member 65 is bolted to the front surface of the mudguard plate 64, and the leveling member 65 is connected to the mudguard plate 64 within the range of the long hole 65 a of the leveling member 65. The connection position can be adjusted up and down.
As shown in FIGS. 12 and 13, on the rear side of the mudguard plate 64, a left and right frame 66 is connected to the lower surface of the vertical frame 61, and two rake-like leveling members 67 are connected to the groove cutter 87. Bolts are connected to the frame 66 so as to be positioned on both lateral sides.
The leveling member 67 is provided with four long holes 67a. Thereby, in the range of the long hole 67a of the leveling member 67, the connection position of the leveling member 67 to the frame 66 can be adjusted up and down, and any of the four long holes 67a of the leveling member 67 can be adjusted. Depending on whether 67a is used, the connection position of the leveling member 67 to the frame 66 can be adjusted left and right.

  As shown in FIGS. 1, 2, and 7, the seeding device 5 is provided with four floats 31 and 32, that is, a right and left float 31 on the center side and a right and left float 32 on the outside. . The four floats 31 and 32 are composed of the same thing.

[Support structure of pre-seeding device]
Next, the support structure of the pre-sowing apparatus 5A will be described.
As shown in FIGS. 2 and 7, the pre-sowing apparatus 5A includes one front hopper 23 and a pair of left and right front feeding parts 20 positioned below the front hopper 23, one float 31 (or 32), and left and right Four sets of sowing units provided with a pair of groovers 27 are provided side by side in the left-right direction, and are configured so as to perform sowing for eight strips.

As shown in FIGS. 5, 8, and 9, a vertical frame 21 is connected to the rear portion of the vertical frame 17, and a front upper horizontal frame 22 in the horizontal direction is connected to the upper end of the frame 21. A plurality of front extension portions 20 are arranged at predetermined intervals in the left-right direction and connected to the front upper horizontal frame 22. Front hoppers 23 are connected to the upper portions of the two front payout portions 20, and four identical front hoppers 23 are provided for the eight front payout portions 20.
In this case, a horizontally long single front hopper 23 may be connected over the upper portions of the eight front feeding portions 20.

As shown in FIGS. 5, 8, and 9, a bracket 21 a is connected to the upper end portion of the frame 21, and a support plate 24 is connected to the bracket 21 a of the frame 21, and the center portion of the front hopper 23 is connected by the support plate 24. Supported from below.
The front hopper 23 has a lid 23a supported so as to be openable and closable around a horizontal axis P4 (corresponding to a swinging fulcrum) provided at the front end portion of the front hopper 23. Therefore, the front hopper 23 is configured so that it can be opened upward by grasping the rear end side of the lid 23a, and the seed hopper is supplied from the rear side of the seeding device 5 to the front hopper 23. be able to.

  As shown in FIGS. 5, 7, 8, and 9, a channel-shaped bracket 25 is connected to the rear end portion of each vertical frame 17 in a rear open state. A horizontal frame 26 in the left-right direction is connected across these brackets 25. The right and left vertical wall plates 27b are connected rearward to the rear portion of the triangular grooved plate 27a in a side view, so that the groover 27 is configured, and is positioned below the front feeding portion 20. Eight grooving devices 27 are connected to the horizontal frame 26 side by side at a predetermined interval in the left-right direction.

  As shown in FIGS. 8 and 9, the bracket 25 is provided with a vertically long slot 25 b, and the horizontal frame 26 is connected to the slot 25 b of the bracket 25 by a bolt 29. As a result, the height of the horizontal frame 26 is adjusted along the long hole 25b of the bracket 25, and the horizontal frame 26 is connected to the bracket 25 by the bolt 29. Can be changed. In this case, a shallow groove is formed on the surface G by the groove generator 27 so that the lower end portion of the groove generator 27 is positioned slightly below the bottom surfaces of the floats 31 and 32.

  As shown in FIGS. 5 and 8, a guide member 28 formed by bending a plate material into a U-shaped cross section is connected to the lower portion of the front feed portion 20 and extends downward, and the lower portion of the guide member 28 is made. The groove 27 is inserted between the vertical wall plates 27b.

  As a result, as shown in FIGS. A shallow groove is formed by the groove forming device 27 along the lines L1, L3, L5, L7, L9, L11, L13, and L15, so that the seeds of the front hopper 23 are fed out by the front feeding unit 20 and guided. 28, the first, third, fifth, seventh, ninth, eleventh, thirteenth and fifteenth supply lines L1, L3, L5, L7, L9, L11, L13, and L15 are formed. It is supplied to the shallow groove on the surface G.

[Support structure of post-seeding device]
Next, the support structure of the post-seeding apparatus 5B will be described.
As shown in FIGS. 2 and 7, the rear sowing apparatus 5 </ b> B includes a single rear hopper 47, a pair of left and right rear feed portions 48 positioned below the left and right groovers 55, One of the seeding units in the central part, comprising two sets of the sowing units on both outer sides, one rear hopper 46, three rear feeding parts 48 positioned below the rear hoppers 46, and three groove producing units 55 The set is provided side by side in the left-right direction, and is configured so as to be able to perform sowing for seven strips.

  As shown in FIGS. 8, 9, 10, and 11, vertical frames 30, 44, and 45 are connected across the horizontal frames 8 and 9 to form a frame-like frame. A boss portion 49 is connected to the frame 44, and the boss portion 49 is rotatably supported around the horizontal axis P <b> 6 of the support member 50 connected to the left vertical frame 16. A support pin 51 is connected to the frame 45, and the support pin 51 is rotatably supported around a horizontal axis P6 of a support member 52 connected to the right vertical frame 16.

As shown in FIGS. 5, 8, 10, and 11, seven rear extending portions 48 are arranged at predetermined intervals in the left-right direction and connected to the upper horizontal frame 8, and the rear extending portion 48, the front extending portion 20, Are of the same structure. A rear hopper 46 is connected to the upper part of the central three rear feeding portions 48. A rear hopper 47 is connected to the upper part of the two right rear rear extending portions 48 and the left two rear forward portions 48, and two identical rear hoppers 47 are connected to the four rear forward portions 48. The front hopper 23 and the rear hopper 47 have the same structure.
In this case, a horizontally long single rear hopper 46 may be connected over the upper portions of the seven rear feed portions 48.

As shown in FIGS. 5, 8, 9, 10, and 11, the bracket 30 a is connected to the upper end portion of the frame 30, and the support plate 24 is connected to the bracket 30 a of the frame 30. The support plate 24 supports the central portions of the rear hoppers 46 and 47 from below.
The rear hoppers 46 and 47 have lids 46a and 47a supported so as to be openable and closable around a horizontal axis P5 (corresponding to a swing fulcrum) provided at the front end of the upper part of the rear hoppers 46 and 47. Therefore, the rear hoppers 46 and 47 are configured so that the rear ends of the lid portions 46a and 47a can be grasped and opened upward, and the rear hoppers 46 and 47 can be opened from the rear side of the seeding device 5. It is possible to supply seeds.

  As shown in FIGS. 5, 7, 8, and 9, two brackets 53 on the right and left sides of the horizontal frame 9 are connected, and a horizontal frame 54 in the left-right direction is connected across the bracket 53. The right and left vertical wall plates 55b are connected rearward to the rear portion of the triangular grooved plate 55a in a side view, so that the groove forming device 55 is configured and is positioned below the rear feeding portion 48. Seven groovemakers 55 are connected to the horizontal frame 54 side by side at a predetermined interval in the left-right direction.

  As shown in FIGS. 8 and 9, the bracket 53 is provided with a vertically extending long hole 53 a, and the horizontal frame 54 is connected to the long hole 53 a of the bracket 53 by a bolt 56. As a result, the height of the horizontal frame 54 is adjusted along the long hole 53a of the bracket 53, and the horizontal frame 54 is connected to the bracket 53 by the bolt 56, thereby simultaneously adjusting the height of the seven groove forming devices 55. Can be changed.

In this case, the long hole 53 a of the bracket 53 is set to be longer than the long hole 25 b of the bracket 25, and the height adjustment range of the groove forming device 55 is larger than the height adjustment range of the groove forming device 27. Set to something.
Since the seeding device 5 tends to fall backward due to the overall deflection of the link mechanism 3 and the seeding device 5, and the height of the grooving device 55 tends to be lower than the height of the grooving device 27, the floats 31, 32. After setting the height of the groove forming device 27 so that the lower end of the groove forming device 55 is positioned slightly below the bottom surface of the groove forming device 55, the height of the groove forming device 55 is set to the same height as the groove forming device 27. Set the size. Thus, when setting the height of the groove producing device 55 to be the same height as the groove producing device 27, it is effective that the adjustment range of the height of the groove producing device 55 is large.

  As shown in FIGS. 5 and 8, a guide member 57 formed by bending a plate material into a U-shaped cross section is connected to the lower portion of the rear feed portion 48 and extends downward, and the lower portion of the guide member 57 is made. The groove 55 is inserted between the vertical wall plates 55b.

  Thereby, as shown in FIGS. 3, 4, 7, the second, fourth, sixth, eighth, tenth, twelfth, and fourteenth supply lines to be described later are provided on the surface G leveled by the floats 31, 32 and the leveling members 65, 67. A shallow groove is formed by the grooving device 55 along L2, L4, L6, L8, L10, L12, and L14. The seed hoppers of the rear hoppers 46 and 47 are fed out by the rear feeding portion 48 and guided to the guide member 57. The shallow groove of the rice field G formed along the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12, and L14. To be supplied.

[Post-seeding device attitude change]
Next, the posture change of the post-seeding apparatus 5B will be described.
As shown in FIGS. 8, 10, and 11, the boss portion 49 connected to the frame 44 is rotatably supported around the horizontal axis P <b> 6 of the support member 50 connected to the left vertical frame 16. The connected support pins 51 are rotatably supported around the horizontal axis P6 of the support member 52 connected to the right vertical frame 16.

  As a result, as shown in FIGS. 5 and 8, the three rear hoppers 46, 47, the seven rear feeding portions 48, the seven groove forming devices 55, the seven guide members 57, etc. 9 is supported by the boss portion 49 and the support pin 51 on the support members 50 and 52 so as to be swingable around the horizontal axis P6.

  As shown in FIGS. 8, 10, and 11, brackets 9 a are connected to the right and left ends of the horizontal frame 9, and the connection pins 58 are slidable to the bracket 9 a of the horizontal frame 9 in the horizontal direction and the horizontal axis in the horizontal direction. A spring 59 that is supported so as to be rotatable around and that biases the connecting pin 58 toward the laterally protruding side is provided.

  5, 8, 10, and 11 are working postures in which the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are erected, and are connected to the rear end portion of the vertical frame 16. The connecting pin 58 is inserted into the opening of the engaging portion 16b, and the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are fixed to the working posture by the connecting pin 58. is there. In the working posture, the rear feeding portion 48 is disposed at the same height as the front feeding portion 20, and the rear hoppers 46 and 47 are disposed at the same height as the front hopper 23.

  In the working posture, the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12, A shallow groove is formed along the groove L14 by the grooving device 55. The seed hoppers of the rear hoppers 46 and 47 are fed out by the rear feeding portion 48 and fall in the space surrounded by the guide member 57, so that the second , 4, 6, 8, 10, 12, 14 are supplied to shallow grooves on the surface G formed along the supply lines L2, L4, L6, L8, L10, L12, L14.

As shown in FIG. 6, by removing the connecting pin 58 from the engaging portion 16b of the vertical frame 16, the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 are moved around the horizontal axis P6. It can be rotated clockwise in the figure.
The frame 44 is applied to the support plate 16c connected to the rear end portion of the left vertical frame 16, and the weights of the rear hoppers 46, 47, the rear feeding portion 48, the groove forming device 55, and the guide member 57 are determined. By supporting the support plate 16c, the rear hoppers 46 and 47 and the rear feeding portion 48 are tilted backward, and the groove forming device 55 and the guide member 57 can be brought into a non-working posture in which they are lifted forward.

From the state of the non-working posture shown in FIG. 6, by rotating the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 counterclockwise in the drawing around the horizontal axis P6, The working posture shown in FIG. 5 can be restored.
As shown in FIGS. 6 and 10, a spring 60 that urges the horizontal frames 8 and 9 counterclockwise in FIG. 5 and FIG. 6 is externally fitted to the boss portion 49 so as to be attached to the support member 50 and the frame 44. When the rear hoppers 46 and 47, the rear feeding portion 48, the groove forming device 55 and the guide member 57 are lifted upward, the urging force of the spring 60 is assisted.

[Arrangement of front and rear feeding parts]
Next, the arrangement of the front and rear feeding units 20 and 48 will be described.
As shown in FIGS. 3, 4, and 7, fifteen first to fifteen supply lines L <b> 1 to L <b> 15 along the front-rear direction are set on the surface G with a predetermined interval W <b> 1 in the left-right direction, The supply line is the first supply line L1, and the second to fifteenth supply lines L2 to L15 are set on the right side. In this case, the interval (predetermined interval W1) between adjacent supply lines is set to about 150 mm.

  As shown in FIGS. 3, 4, and 7, the eight forward feeding portions 20 are provided in the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth supply lines L1, L3, L5, L7, L9, L11, L13 and L15 (odd-numbered supply lines) are arranged side by side at a predetermined interval in the left-right direction so as to be positioned above. The adjacent distance in the left-right direction between the front feeding parts 20 is an interval between places sowing in the field by the pre-seeding device 5A, that is, a sowing interval W2 of the pre-seeding device 5A. Eight groove forming devices 27 are provided for the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteen supply lines L1, L3, L5, L7, L9, L11, L13, and L15 (odd-numbered supply lines). Placed in position.

  As shown in FIGS. 3, 4, and 7, on the rear side of the front feed unit 20, seven rear feed units 48 are provided in the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L 2, L 4, L 6. , L8, L10, L12, L14 (even-numbered supply lines) are arranged side by side at a predetermined interval in the left-right direction. The adjacent distance in the left-right direction between the post-feeding portions 48 is the interval between the locations to be seeded in the field by the post-seeding device 5B, that is, the sowing interval W3 of the post-seeding device 5B. The interval is set equal to the interval W2. Seven groove generators 55 are arranged at the positions of the second, fourth, sixth, eighth, tenth, twelfth and fourteenth supply lines L2, L4, L6, L8, L10, L12 and L14 (even-numbered supply lines). ing.

With the above structure, as shown in FIGS. 3, 4, and 7, the interval between adjacent advancement portions 20 (seeding interval W2) is twice the interval between adjacent supply lines (predetermined interval W1), The interval between adjacent post-feeding portions 48 (seeding interval W3) is twice the interval between adjacent supply lines (predetermined interval W1).
The front and rear extension parts 20 and 48 are displaced in the left-right direction when viewed in the front-rear direction, and the rear extension part 48 is positioned between the front extension parts 20 when viewed in the front-rear direction. In this case, since the difference between the number of the front feeding parts 20 and the number of the rear feeding parts 48 is one, the rear feeding parts 48 are arranged at all between the adjacent front feeding parts 20 in the front-rear direction view. ing.

As shown in FIGS. 3, 4, and 7, the center line CL in the left-right direction of the machine body and the seeding device 5 becomes the position of the eighth supply line L <b> 8, and the fourth rearward feeding portion 48 (eighth supply line L <b> 8). Is located on the center line CL, and the center line CL is located between the fourth front extension 20 (seventh supply line L7) and the fifth front extension 20 (ninth supply line L9).
As a result, the same number of front feeding portions 20 are arranged symmetrically on the right and left sides of the central supply line (eighth supply line L8), and the central supply line (eighth supply line L8) is located behind the center. The feeding part 48 is arranged, and the same number of the rear feeding parts 48 are arranged symmetrically on the right and left sides of the central rear feeding part 48.

[Transmission structure to the feeding section]
Next, the transmission structure to the front and rear extension parts 20 and 48 will be described.
As shown in FIGS. 4, 5, and 9, a boss portion 68 is connected to the upper portion of the center portion of the horizontal frame 6 through a support member 78 in the front-rear direction, and a bevel gear case 69 is attached to the rear end portion of the boss portion 68. A flat support plate 70 is connected across the left end portion of the front upper horizontal frame 22 and the support member 50. An input shaft 71 is rotatably supported by the boss portion 68, and the power of the engine 7 provided at the front portion of the airframe is transmitted to the input shaft 71 via the transmission shaft 95.

  As shown in FIGS. 4 and 5, a transmission shaft 72 is provided between the bevel gear case 69 and the support plate 70. In the bevel gear case 69, a bevel gear 71 a fixed to the input shaft 71 and a transmission shaft 72 are provided. The fixed bevel gear 72a is engaged. One transmission shaft 73 is installed in the left-right direction across the support plate 70 and the front feeding portion 20, and the sprocket 72 b fixed to the transmission shaft 72 and the transmission shaft 73 are fixed on the support plate 70 side. A transmission chain 74 is installed over the sprocket 73d.

  As shown in FIGS. 4, 5, 8, and 10, one transmission shaft 75 is installed in the left-right direction across the inside of the boss portion 49 and the rear extension portion 48, and is formed in the opening 70 a at the rear portion of the support plate 70. The boss portion 49 and the transmission shaft 75 are inserted, and on the support plate 70 side, a transmission chain 76 is installed over a sprocket 73e fixed to the transmission shaft 73 and a sprocket 75d fixed to the transmission shaft 75. Yes.

As shown in FIGS. 4, 8, and 10, a cover 77 covering the sprocket 72 b of the transmission shaft 72, the sprockets 73 d and 73 e of the transmission shaft 73, the sprocket 75 d of the transmission shaft 75, the transmission chains 74 and 76, etc. It is connected.
As shown in FIGS. 5, 10, and 11, since the transmission shaft 75 is arranged concentrically with the horizontal axis P <b> 6 (the boss portion 49 and the support pin 51), the rear hoppers 46 and 47, the rear feeding portion 48, Even if the grooving device 55 and the guide member 57 are operated to the working and non-working postures, the transmission shaft 75 and the like are not forced.

  As shown in FIGS. 4 and 8, eight output gears 73a are externally fitted to the transmission shaft 73 so as to be relatively rotatable, and eight clutch members 73b are externally fitted to the transmission shaft 73 so as to be integrally rotatable and slidable. A spring 73c that urges the clutch member 73b toward the occlusal side with the output gear 73a is externally fitted to the transmission shaft 73. An input gear 20a of the front feeding portion 20 is provided on the left side surface of the front feeding portion 20, and the input gear 20a of the front feeding portion 20 and the output gear 73a of the transmission shaft 73 are engaged with each other.

  As shown in FIGS. 4, 10, and 11, seven output gears 75a are externally fitted to the transmission shaft 75 so as to be relatively rotatable, and seven clutch members 75b are externally fitted to the transmission shaft 75 so as to be integrally rotatable and slidable. A spring 75c that biases the clutch member 75b toward the occlusal side with the output gear 75a is externally fitted to the transmission shaft 75. An input gear 48a of the rear extension 48 is provided on the left side surface of the rear extension 48, and the input gear 48a of the rear extension 48 and the output gear 75a of the transmission shaft 75 are engaged with each other.

With the above structure, as shown in FIG. 4, the power of the engine 7 is transmitted to the transmission shaft 73 via the input shaft 71, the transmission shaft 72, and the transmission chain 74, and is transmitted to the transmission shaft 75 via the transmission chain 76. Communicated.
In a state where the clutch members 73b and 75b of the transmission shafts 73 and 75 are engaged with the output gears 73a and 75a, the power of the transmission shafts 73 and 75 is transmitted from the output gears 73a and 75a of the transmission shafts 73 and 75 to the front feeding portion 20. It is transmitted to the input gear 20a (the input gear 48a of the rear feeding portion 48), and the front feeding portion 20 (the rear feeding portion 48) is driven.

[Feeding drive stop]
Next, the driving and stopping structure of the front and rear feeding units 20 and 48 will be described.
As shown in FIG. 4, one operation shaft 79 is rotatably extended in the left-right direction across the front extension portion 20, and eight cam members are provided so as to correspond to the clutch member 73 b of the transmission shaft 73. 79 a is connected to the operation shaft 79. An operation lever 80 is connected to the right end portion of the operation shaft 79, and a disc-shaped lever guide 81 is connected to the right end portion of the front upper horizontal frame 22.

  As shown in FIGS. 4, 10, and 11, one operation shaft 82 is rotatably extended in the left-right direction across the rear extending portion 48, and is arranged so as to correspond to the clutch member 75 b of the transmission shaft 75. A plurality of cam members 82 a are connected to the operation shaft 82. An operation lever 83 is connected to the right end portion of the operation shaft 82, and a disc-shaped lever guide 84 is connected to the right end portion of the upper horizontal frame 8.

  With the above structure, when the operation shafts 79 and 82 are rotated by the operation levers 80 and 83, the cam members 79a and 82a of the operation shafts 79 and 82 are used to rotate the clutch shafts 73b and 73b of the transmission shafts 73 and 75, as will be described later. 75b is operated to move away from the output gears 73a and 75a against the springs 73c and 75c, and the front and rear feeding portions 20 and 48 are stopped.

The operation lever 80 and the lever guide 81 have the following first to eighth positions.
First position (a state in which all the front feeding units 20 are driven).
2nd position (The state where the 1st and 2nd front extension parts 20 (the 1st and 3rd supply lines L1 and L3) stopped, and other front extension parts 20 were driven).
Third position (1st to 4th previous advancement sections 20 (first, third, fifth, and seventh supply lines L1, L3, L5, and L7) are stopped and other previous advancement sections 20 are driven) .
The fourth position (the first to sixth pre-feeding portions 20 (first, third, fifth, seventh, ninth, and eleventh supply lines L1, L3, L5, L7, L9, and L11) is stopped, and other pre-feeding operations are performed. State in which the unit 20 is driven).
5th position (7th, 8th front extension part 20 (13th, 15th supply line L13, L15) stopped, and other front extension parts 20 were driven).
Sixth position (the state where the fifth to eighth pre-feeding portions 20 (9th, 11, 13, 15 supply lines L9, L11, L13, L15) are stopped and the other pre-feeding portions 20 are driven).
The seventh position (the third to eighth pre-feeding portions 20 (the fifth, seventh, ninth, eleventh, thirteenth and fifteenth supply lines L5, L7, L9, L11, L13, and L15) is stopped, and other pre-feeding operations are performed. State in which the unit 20 is driven).
Eighth position (a state in which all the front feeding parts 20 are stopped).

The operation lever 83 and the lever guide 84 have the following first to eighth positions.
First position (a state in which all the rear pay-out portions 48 are driven).
Second position (a state in which the first and second rear feed portions 48 (second and fourth supply lines L2 and L4) are stopped and the other rear feed portions 48 are driven).
Third position (1st to 4th rearwardly extending portion 48 (second, fourth, sixth, and eighth supply lines L2, L4, L6, and L8) is stopped and the other rearwardly extending portions 48 are driven) .
The fourth position (the first to fifth rear-feeding portions 48 (second, fourth, sixth, eighth, and tenth supply lines L2, L4, L6, L8, and L10) are stopped, and the other rear-feeding portions 48 are driven. State).
5th position (The state where the 6th and 7th back extension parts 48 (the 12th and 14th supply lines L12 and L14) stopped, and other back extension parts 48 were driven).
Sixth position (a state in which the fifth to seventh rearward feeding portions 48 (the tenth, twelfth and fourteenth supply lines L10, L12, and L14) are stopped and the other rearward feeding portions 48 are driven).
The seventh position (the third to seventh pre-feeding portions 20 (the sixth, eighth, tenth, twelfth and fourteenth supply lines L6, L8, L10, L12, and L14) is stopped, and the other rear feeding portions 48 are driven. State).
Eighth position (a state in which all the rear feeding portions 48 are stopped).

  In a normal state, the operation levers 80 and 83 are operated to the first position, and all the front and rear feeding portions 20 and 48 are driven. When seed rice is not partially supplied to the rice field G, the operation levers 80 and 83 are operated to the same position, for example, if the operation lever 80 is operated to the second position, the operation lever 83 is also operated to the second position. Yes, the stopping state of the front and rear feeding units 20, 48 is as described above.

(Adjustment of feeding)
Next, a structure for adjusting the feed amount of the front and rear feed units 20 and 48 will be described.
As shown in FIGS. 4 and 8, an adjustment gear 20 b that adjusts the feed amount of the front feed portion 20 is provided on the right side surface of the front feed portion 20. A single operation shaft 85 is installed in the left and right direction so as to be rotatable and slidable in the axial direction across the front feeding portion 20, and eight adjustments are made so as to correspond to the adjustment gear 20 b of the front feeding portion 20. A gear 85 a is connected to the operation shaft 85. A handle portion 85b is provided at the right end portion of the operation shaft 85, and the adjustment gear 20b of the front feeding portion 20 and the adjustment gear 85a of the operation shaft 85 are not engaged with each other in a normal state.

  As shown in FIGS. 4, 10, and 11, an adjustment gear 48 b that adjusts the feeding amount of the rear feeding portion 48 is provided on the right side surface of the rear feeding portion 48. A single operation shaft 86 is installed in the left and right direction so as to be rotatable and slidable in the axial direction over the rear extending portion 48, and seven adjustments are made so as to correspond to the adjusting gear 48b of the rear extending portion 48. A gear 86 a is connected to the operation shaft 86. A handle portion 86b is provided at the right end portion of the operation shaft 86, and the adjustment gear 48b of the rear extension portion 48 and the adjustment gear 86a of the operation shaft 86 are not engaged with each other in a normal state.

With the above structure, when adjusting the feed amounts of the front and rear feed portions 20, 48, the operation shafts 85, 86 are slid to the right, and the adjustment gears 85a, 86a of the operation shafts 85, 86 are moved forward and rear. The adjusting gears 20b and 48b of the feeding parts 20 and 48 are engaged with each other.
Thereafter, the operating shafts 85 and 86 are rotated by the handle portions 85b and 86b of the operating shafts 85 and 86, and the adjustment gears 20b and 48b of the front and rear feeding units 20 and 48 are rotated, so that the front and rear feeding units are rotated. Adjust the feeding amount of 20,48. In this case, the feed amounts of all the front feed units 20 can be adjusted simultaneously, and the feed amounts of all the rear feed units 48 can be adjusted simultaneously.

[Seeding pattern]
There are various patterns as seeding patterns supplied by the seeding device 5 having the above structure.
As an example, as shown in FIG. 15 (a), seeding may be simultaneously performed from each feeding part 20 of the pre-seeding device 5A and each feeding part 48 of the post-seeding device 5B.
In this case, the horizontal sowing interval W2 in the pre-seeding apparatus 5A indicated by a white circle and the horizontal sowing interval W3 in the post-seeding apparatus 5B indicated by a black circle are the same interval and indicated by a black circle. Sowing is performed so that the sowing position in the post-seeding apparatus 5B is within the width of the sowing interval W2 in the left-right direction in the front sowing apparatus 5A in the left-right direction.
Also in the front-rear direction, the front sowing interval S1 in the pre-seeding apparatus 5A indicated by white circles and the front sowing interval S2 in the rear sowing apparatus 5B indicated by black circles are the same interval and indicated by black circles. The sowing position in the subsequent sowing device 5B is sowed so as to be within the width of the sowing interval W2 in the left-right direction in the sowing device 5A in the left-right direction. In this case, the sowing intervals S1 and S2 in the front-rear direction are set to be the same as the sowing intervals W2 and W3 in the left-right direction, but the sowing intervals S1 and S2 in the front-rear direction are larger than the sowing intervals W2 and W3 in the left-right direction. It can be a little wider or narrower.

Moreover, as shown in FIG.15 (b), the seed sowing | sown from each feeding part 20 of the pre-seeding apparatus 5A and each feeding part 48 of the post-seeding apparatus 5B is in the state lined up in a substantially straight line in the left-right direction. You may make it sow.
Also in this case, the horizontal sowing interval W2 in the pre-seeding apparatus 5A indicated by a white circle and the horizontal sowing interval W3 in the post-seeding apparatus 5B indicated by a black circle are the same interval and are indicated by a black circle. Sowing is performed so that the sowing position in the post-seeding apparatus 5B is within the width of the sowing interval W2 in the left-right direction in the front sowing apparatus 5A in the left-right direction.
However, in the front-rear direction, the seeding interval S1 in the front-rear direction in the pre-seeding apparatus 5A indicated by a white circle and the seeding interval S2 in the front-rear direction in the rear sowing apparatus 5B indicated by a black circle are the same interval, but before the white seeds. Since there is a seeding position in the post-seeding device 5B indicated by a black circle at a position substantially the same as the seeding position in the seeding device 5A, seeding is performed so that the entire seeding position is aligned substantially in the left-right direction. Is done.

Furthermore, as shown in FIG. 15 (c), the seed pods sown from each feeding part 20 of the pre-seeding device 5A and each feeding part 48 of the post-seeding device 5B are arranged substantially in a straight line in the front-rear direction. It may be sowed in a state.
Also in this case, the horizontal sowing interval W2 in the pre-seeding apparatus 5A indicated by a white circle and the horizontal sowing interval W3 in the post-seeding apparatus 5B indicated by a black circle are the same interval and are indicated by a black circle. Sowing is performed so that the sowing position in the post-seeding apparatus 5B is positioned within the width of the sowing interval W2 in the left-right direction in the sowing apparatus 5A in the left-right direction.
However, in this case, the sowing interval S1 in the front-rear direction in the pre-seeding apparatus 5A indicated by white circles and the sowing interval S2 in the front-rear direction in the rear sowing apparatus 5B indicated by black circles are the sowing intervals in the left-right direction. Since the width is set to be considerably narrower than W2 and W2, the seeding positions are sowed in a state where they are arranged in a substantially straight line in the front-rear direction.

It should be noted that the interval between the sowing position in the post-seeding apparatus 5B indicated by the black circle and the sowing position in the pre-seeding apparatus 5A indicated by the white circle on both the left and right sides does not have to be equal on both the left and right sides. The seeding position in the rear sowing device 5B may be in the state of being biased to the other side. In short, the sowing position in the rear sowing device 5B is within the width of the sowing interval W2 in the left and right direction in the front sowing device 5A. What is necessary is just to be sown so that it may be located.
Other configurations may be the same as those in the above-described embodiment.

[Other Embodiment 1]
In the above embodiment, the structure in which the float 31 (or 32) is provided in the pre-seeding apparatus 5A is illustrated, but the structure is not limited to this. For example, as shown in FIG. 16, the float 31 (or 32) may be provided not in the pre-sowing apparatus 5A but in the post-sowing apparatus 5B.
As described above, when the float 31 (or 32) is provided in the post-seeding apparatus 5B, the sowing unit in the post-seeding apparatus 5B includes one rear hopper 47, a pair of left and right rear feeding portions 48 positioned below, In addition to the pair of groovers 55, a single float 31 (or 32) is added. Therefore, when the number of seeds to be seeded is an odd number, the sowing unit for sowing the even number is provided in the post-seeding apparatus 5B.
Further, the float 31 (or 32) may not be used at all. In this case, it is configured to control the height of the sowing target surface, the front sowing apparatus 5A, and the rear sowing apparatus 5B by controlling the height of the link mechanism 3 that performs the raising / lowering operation of the sowing apparatus 5 or the like. It is desirable to do. That is, although not shown, for example, using a mud surface detector that swings in contact with the surface of the paddy field, the height from the paddy field to the feeding parts 22 and 48 of the seeding device 5 is detected, and the link is based on the detection result. What is necessary is just to control the height of the mechanism 3 with respect to the aircraft.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, the seeding device 5 has a structure including one front hopper 23, a pair of left and right front feeding parts 20 positioned below the front hopper 23, and a pair of left and right groovers 27, or one rear The structure including the hopper 46, the three rear feeding portions 48 located below the hopper 46, and the three groove forming devices 55 is illustrated, but regarding the number of combinations of the hopper, the feeding portion and the groove forming device, However, it is not limited to this.
In other words, one hopper may be provided with one feeding portion and one groove forming device, or four or more feeding portions and four or more groove forming devices.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In said embodiment, although the thing of the structure provided with the groove cutting device 87 with the leveling members 65 and 67 was illustrated as a direct seeding machine, it is not restricted to this.
For example, as shown in FIG. 17, a structure having leveling members 65 and 67 without the groove cutter may be used.
In this case, the positional relationship between the left and right rear wheels 2 and the third and fourth supply lines L3 and L4 and the twelfth and thirteenth supply lines L12 and L13 indicating the seeding position in the vicinity of the passing trace is as follows. It is desirable to set.
The rear wheel 2 includes a rim portion 2a on the outer peripheral portion and a lug portion 2b provided at a predetermined interval along the circumferential direction of the rim portion 2a. The width of 2b is large.

As shown in FIG. 17, in the right and left rear wheels 2, a virtual center line C1 extending rearward from the lateral center of the lateral width of the rear wheel 2 (rim portion 2a) is set.
In this case, the positions of the leveling members 65 and 67 are set so that the overlapping part of the leveling member 65 and the leveling member 67 is positioned on the virtual center line C1. The third and fourth supply lines L3 and L4 (grooving devices 27 and 55), the twelfth and the fourth and the fourth supply lines in the vicinity of the virtual center line C1 are supplied so that the seeds are supplied to positions deviated to the right and left from the virtual center line C1. The positions of the thirteenth supply lines L12, L13 (grooving devices 27, 55) are set.

As shown in FIG. 17, in the right and left rear wheels 2, a virtual rim portion line C <b> 2 extending rearward from the right and left end portions of the rim portion 2 a of the rear wheel 2, and a lug portion 2 b of the rear wheel 2. And a virtual lug part line C3 extending rearward from the right and left end parts of the horizontal width of is set.
In this case, the leveling members 65 and 67 are set so that the overlapping portion of the leveling member 65 and the leveling member 67 is positioned on the virtual rim portion line C2, and the leveling members 65 and 67 are set on the virtual lag portion line C3. The positions of the leveling members 65 and 67 are set so that is positioned.

  As shown in FIG. 17, in the left rear wheel 2, the third supply line is so provided that seed is supplied to a position between the virtual rim part line C <b> 2 and the virtual lag part line C <b> 3 on the left side of the virtual center line C <b> 1. The position of L3 (grooving device 27) is set. The position of the fourth supply line L4 (grooving device 55) is set so that the seed is supplied to the position between the virtual rim line C2 and the virtual lug line C3 on the right side of the virtual center line C1. .

In this case, the positions of the third and fourth supply lines L3 and L4 (grooving devices 27 and 55) are set so that the seeds are supplied to the position of the virtual lug part line C3 in the left rear wheel 2. Also good.
The position of the third supply line L3 (grooving device 27) may be set so that seeds are supplied to a position deviated to the left from the virtual lug line C3 on the left side of the virtual center line C1, and the virtual center line The position of the fourth supply line L4 (grooving device 55) may be set so that the seed is supplied to a position deviated to the right from the virtual lag portion line C3 on the right side of C1.

  As shown in FIG. 17, in the right rear wheel 2, the twelfth supply line is supplied so that the seed is supplied to a position between the virtual rim part line C2 and the virtual lag part line C3 on the left side of the virtual center line C1. The position of L12 (grooving device 55) is set. The position of the thirteenth supply line L13 (grooving device 27) is set so that the seed is supplied to the position between the virtual rim part line C2 and the virtual lug part line C3 on the right side of the virtual center line C1. .

In this case, the positions of the twelfth and thirteenth supply lines L12 and L13 (grooving devices 27 and 55) are set so that the seeds are supplied to the position of the virtual lug part line C3 in the right rear wheel 2. Also good.
The position of the twelfth supply line L12 (grooving device 55) may be set so that seeds are supplied to a position deviated to the left from the virtual lag line C3 on the left side of the virtual center line C1, and the virtual center line The position of the thirteenth supply line L13 (grooving device 27) may be set so that the seeds are supplied to a position off the right side from the virtual lag line C3 on the right side of C1.
In addition, although not shown in the figure, in the structure provided with the grooving device 87, the leveling member 65 at the center is omitted, and the structure is provided with the grooving device 87 and the leveling members 67 on the left and right sides thereof. May be.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above embodiment, as the float 31 (or 32) provided in the seeding device 5, the float 31 (or 32) is arranged in the left-right direction at the lower position of either the pre-sowing device 5A or the post-sowing device 5B. Although the thing of the structure provided in the shape was illustrated, it is not restricted to this.
For example, as shown in FIG. 18, in the lower part of the pre-seeding apparatus 5A, there are provided four floats 31 and 32 of an outer right and left float 32 and a center right and left float 31, and the front Another front float 31F, 32F may be provided on the side.
The front floats 31F and 32F are located on the front side of the distance D between adjacent floats of the right and left floats 32 on the outer side and the right and left floats 31 on the center side, and in the left-right direction. It is formed wider than the interval D so as to overlap. By the front floats 31F and 32F, the right and left floats 32 on the outer side and the right and left floats 31 on the center side are arranged so as to level the range in the horizontal direction that is not leveled.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the above-described embodiment, eight pre-feeding units 20 and the same number of grooving devices 27 are provided in the pre-seeding device 5A, and seven post-feeding units 48 and the same number of grooving devices 55 are provided in the post-seeding device 5B. The structure provided is exemplified, but the structure is not limited to this.
That is, in the above embodiment, since the number of sowing lines is 15, the front pre-seeding apparatus 5A is provided with eight front feeding parts 20 and the groove generator 27, and the rear rear sowing apparatus 5B is seven. However, the number of sowing lines is not limited to 15, and sowing may be performed with a smaller number or a larger number of lines. If the number of sowing lines is different, naturally, the numbers of the pre-feeding unit 20 and the groove forming device 27 of the pre-seeding apparatus 5A and the post-feeding unit 48 and the groove forming device 55 of the post-seeding device 5B are also different. For example, if the number is 13, the front sowing apparatus 5A is provided with seven front feeding parts 20 and groove generators 27, and the rear rear sowing apparatus 5B is provided with six rear feeding parts 48 and groove generators 55. If the number is 17, the pre-seeding device 5A is provided with nine front feeding parts 20 and the grooving device 27, and the rear rear sowing device 5B is provided with eight rear sowing devices. What provided the delivery part 48 and the groove making device 55 is employable. Thus, what is necessary is just to set it as the number of the line | wires divided | segmented before and behind suitably according to the number of seeding planned seeding | rowing.
Further, in the relationship between the pre-feeding unit 20 and the grooving device 27 of the pre-seeding device 5A and the post-feeding unit 48 and the grooving device 55 of the post-seeding device 5B, the pre-feeding unit 20 and the grooving on the pre-seeding device 5A side. It is not necessary that the number of the devices 27 is larger than the number of the rear feeding unit 48 and the groove producing device 55 of the rear sowing device 5B, and conversely, the front feeding unit 20 and the groove producing device 27 on the side of the previous seeding device 5A. The number of the rear feeding unit 48 and the grooving device 55 may be larger than the number of the sowing devices 5B. Furthermore, the number of the front feeding unit 20 and the groove producing device 27 on the pre-seeding apparatus 5A side may be the same as the number of the rear feeding unit 48 and the groove producing device 55 of the rear sowing apparatus 5B.
Other configurations may be the same as those in the above-described embodiment.

[6 of another embodiment]
In the above embodiment, the structure in which the front feeding unit 20 of the pre-seeding device 5A and the rear feeding unit 48 of the post-seeding device 5B are arranged at different positions in the left-right direction is illustrated, but the structure is limited to this structure. It is not a thing.
That is, the pre-feeding unit 20 of the pre-sowing apparatus 5A and the post-feeding part 48 of the post-seeding apparatus 5B may be provided at the same position in the left-right direction. In this case, the seed pod fed from either one of the pre-feeding unit 20 of the pre-seeding apparatus 5A and the post-feeding part 48 of the post-seeding apparatus 5B differs from the falling position of the seed pod fed from the other in the left-right direction. Positioning means that guides so as to fall to the position, or the seed pods fed from both the front feeding unit 20 of the pre-seeding device 5A and the rear feeding unit 48 of the rear sowing device 5B differ in the left-right direction. It is necessary to provide a guiding means for guiding it so that it falls.
Other configurations may be the same as those in the above-described embodiment.

[7 of another embodiment]
In the above embodiment, the grooving device 87 is provided at the lower end portion of the vertical frame 62 on the lower side of the mudguard plate 64 provided on the front end side of the seeding device 5, but is limited to this structure. Instead, the seeding device 5 may be provided at an intermediate position or a rear position in the front-rear direction.
For example, although not shown in the figure, the grooving device 87 may be connected and fixed by attaching an attachment member to the horizontal frame 26 that exists at an intermediate position in the front-rear direction of the seeding device 5. The attachment target of the grooving device 87 is not limited to the seeding support frame 5C, and may be fixed to the lower surface of the right and left floats 31 on the center side or the lower surface of the right and left floats 32 on the outer side. Or you may fix and provide in the lower part of the guard member 19 located in the outermost side.
Other configurations may be the same as those in the above-described embodiment.

[8 of another embodiment]
In the above-described embodiment, an example is shown in which the upper end portion of the front hopper 23 of the pre-seeding apparatus 5A and the upper end portions of the rear hoppers 46 and 47 of the post-seeding apparatus 5B are substantially the same height. It is not limited to.
That is, the upper end portion of the front hopper 23 of the pre-seeding apparatus 5A and the upper end portions of the rear hoppers 46 and 47 of the post-seeding apparatus 5B may be different. For example, the upper end of the front hopper 23 of the pre-seeding apparatus 5A is higher than the upper ends of the rear hoppers 46, 47 of the rear sowing apparatus 5B, or conversely, the upper end of the front hopper 23 of the pre-seeding apparatus 5A is the rear sowing apparatus. It may have a structure lower than the upper ends of the rear hoppers 46 and 47 of 5B.
Other configurations may be the same as those in the above-described embodiment.

[9 of another embodiment]
In the above embodiment, the upper end portion of the front hopper 23 of the pre-seeding device 5A and the upper end portions of the rear hoppers 46, 47 of the post-seeding device 5B are substantially the same height in the left-right direction. Although illustrated, it is not restricted to this structure.
That is, even if the upper end portion of the front hopper 23 of the pre-seeding apparatus 5A is in the left-right direction, the center side is high and the left and right outer sides are low, or conversely the center side is low and the left and right outer sides are high. Good. Similarly, the rear hoppers 46 and 47 of the rear sowing apparatus 5B have a structure in which the center side in the left-right direction is high and the left and right outer sides are low, or conversely, the center side is low and the left and right outer sides are high. May be.
Other configurations may be the same as those in the above-described embodiment.

[10 of another embodiment]
In said embodiment, although the thing of the structure provided with the groove generators 27 and 55 was illustrated in the seeding apparatus 5, it is not restricted to this, The thing of the structure which is not provided with the groove generators 27 and 55 may be used. .
Other configurations may be the same as those in the above-described embodiment.

  The present invention is not limited to a direct sowing machine that supplies seed surface G to seed surface G in a state in which buds have begun to emerge a little in the sprouting state, but also is a seed material that has been subjected to iron coating, a seed material that has been subjected to calpa coating, It is also applicable to a direct seeding machine that supplies rice to the rice field G.

5 Sowing device 5A Pre-sowing device 5B Post-sowing device 8 Frame 20, 48 Front feeding part 23, 46, 47 Hopper 23a Lid P4, P5 Oscillating fulcrum 31, 32 Leveling float

Claims (8)

It is equipped with a hopper that stores seed potatoes and a plurality of feeding sections that feed out seed potatoes stored in the hopper and supply them to the rice field, and is configured to supply seed potatoes to a plurality of locations in the horizontal direction of the rice field A seeding device;
On the rear side of the pre-seeding device, a hopper for storing the seed pod, and a plurality of feeding portions for feeding out the seed potato stored in the hopper and supplying it to the rice field, and a supply location of the seed pod by the pre-seeding device Is a direct sowing machine comprising a post-seeding device configured to supply seed pods to different fields in the left-right direction.   The direct sowing machine according to claim 1, wherein an interval in the left-right direction between the supply locations of the seed sow by the post-seeding device is equal to an interval in the left-right direction between the supply locations of the seed soup by the pre-seeding device.   The hopper provided in each of the pre-sowing apparatus and the post-seeding apparatus includes a lid body that can swing up and down in the vertical direction around a rocking fulcrum in the left-right direction located on the front end side of each hopper. The direct seeding machine according to claim 1 or 2, wherein the direct seeding machine is configured to be openable and closable.   The plurality of feeding sections provided in each of the pre-seeding apparatus and the post-seeding apparatus include an arrangement position of the feeding section in the pre-seeding apparatus, and an arrangement position of the feeding section in the post-seeding apparatus. The direct sowing machine according to any one of claims 1 to 3, wherein the direct sowing machine is disposed so as to be located above the supply point of the seed pod to the rice field.   The said pre-sowing apparatus and the said post-sowing apparatus are any one of Claims 1-4 comprised so that the vertical direction height in the upper end of each hopper with which each was equipped may be the same or substantially the same before and behind. Direct seeding machine according to one item.   The pre-seeding device and the post-seeding device each include a plurality of the hoppers arranged in the left-right direction, and the vertical height at the upper end of each hopper provided in each is the same or substantially the same in the left-right direction. The direct seeding machine according to any one of claims 1 to 5, which is configured as described above.   The direct sowing machine according to any one of claims 1 to 6, wherein the pre-sowing apparatus or the post-seeding apparatus is provided with a leveling float for leveling the surface of the seeding target position.   Among the pre-sowing device or the post-sowing device, the pre-sowing device or the post-sowing device, where a plurality of the hoppers, a plurality of feeding portions, and a plurality of the leveling floats are provided, The direct sowing machine according to claim 7, wherein the direct sowing machine is configured by an assembly of sowing units in which the hopper and the feeding portion are combined for each leveling float.

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