JP2016158609A - Paddy field work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a paddy field work machine which does not allow a soil-covering member to push out mud forward but allows the mud to be pushed into a groove on a lateral side from the soil-covering member appropriately even when the mud is hard or little water is present on a field face.SOLUTION: The paddy field work machine includes soil covering members 31 and 37 which plunge into a field face at a lateral position of a furrow forming implement and push mud into a groove during traveling of a machine body, thereby fill the groove having been supplied with a farm granule. Each of the soil covering members 31 and 37 includes: an upper part 41a in a lateral direction along the field face; a first rear part 41b extending downward from a rear portion of the upper part 41a; and a second rear part 42 extending downward from the first rear part 41b and plunging into the field face. The position of the second rear part 42 with respect to the first rear part 41b is changed vertically along the first rear part 41b, thereby a plunging depth of the soil-covering members 31 and 37 into the field face is changed freely.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a paddy field work machine such as a riding type rice transplanter or a riding type direct sowing machine equipped with a supply device for supplying agricultural powder such as fertilizer, seed pods, and medicines to a rice field.

  In a riding type direct sowing machine that is an example of a paddy field work machine, as disclosed in Patent Document 1, a groove forming device that forms a groove on a rice field as the machine progresses (27 in FIGS. 2 to 6 of Patent Document 1). ), And is configured to supply agricultural granular material from a supply device (4 in FIGS. 1, 2, and 3 of Patent Document 1) to a groove formed on a rice field by a grooving device. .

In patent document 1, it is equipped with the soil covering member (43 of FIGS. 4-8 of patent document 1) which rushes into a rice field in the position of the horizontal side of a grooving machine, and mud is laterally spread by the soil covering member with the advancement of a body. It is configured to be pushed out toward the groove and to fill the groove supplied with the agricultural powder.
In this case, in patent document 1, it is comprised so that the attitude | position of a soil covering member can be changed to the surroundings of an up-and-down axis center (FIG.5 and FIG.6 b of patent document 1) with respect to the front-back direction (traveling direction) of a body. And the attitude | position of a soil covering member can be changed according to the hardness of mud.

For example, when mud is hard or when there is little water on the surface, mud does not flow easily, so set the posture of the soil covering member to a posture close to the left and right direction of the aircraft, and mud is laterally moved by the soil covering member as the aircraft progresses So that it is pushed strongly toward the groove.
On the other hand, if mud is soft or if there is a lot of water on the surface, mud tends to flow, so set the position of the soil covering member to a posture close to the front and rear direction of the aircraft, and mud is moved sideways by the soil covering member as the aircraft progresses. Do not push too hard into the groove.

JP 2007-209260 A

According to Patent Document 1, when mud is hard or when there is little water on the surface of the field, the position of the soil covering member is set to a position close to the left-right direction of the aircraft.
In the case of surface sowing that supplies seed pods to the surface (surface) in a passenger direct sowing machine, there is a tendency to set less water on the rice field so that the seed sown seeds do not flow and move on the rice field. There is a tendency for mud to become hard due to the small amount.

  However, if the mud is hard or the paddy surface has little water, if the attitude of the soil covering member is set too close to the horizontal direction of the aircraft, the soil covering member will push mud forward as the aircraft progresses. A state where mud is not pushed out from the soil covering member toward the lateral groove may occur.

  The present invention is a paddy field work machine equipped with a grooving device, a supply device, and a soil covering member. Even when the mud is hard or when there is little water on the surface of the paddy field, the soil covering member does not push the mud forward, and the lateral side from the soil covering member. It is intended to be configured so that mud is properly pushed out toward the groove.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a paddy field work machine.
A grooving device that forms grooves on the rice field as the machine progresses, and a supply device that supplies agricultural powder particles to the grooves formed on the rice field by the grooving device,
A mud is pushed into the groove as the aircraft progresses while entering the rice field at a position on the side of the grooving device, and includes a soil covering member that fills the groove supplied with agricultural powder.
The soil covering member includes a laterally upper portion along the field, a first rear part extending downward from the rear part of the upper part, and a first part extending downward from the first rear part and entering the field. With two rear parts,
By changing the position of the second rear portion with respect to the first rear portion up and down along the first rear portion, the depth of penetration of the soil covering member into the paddy field can be changed.

(Operation and effect of the invention)
[I] -1
According to the first feature of the present invention, the soil covering member includes the upper portion, the first and second rear portions, and the first and second rear portions of the soil covering member enter the paddy surface, or the second soil covering member. The rear part rushes into the rice field. Thereby, the penetration depth to the paddy field of a soil covering member can be changed by changing the position of the 2nd back part up and down along the 1st back part.

According to the first feature of the present invention, for example, when mud is hard or when there is little water on the surface, the covering member enters the surface with the posture of the covering member set to an appropriate posture with respect to the longitudinal direction of the aircraft. What is necessary is just to deepen the depth.
As a result, since the area where the soil covering member contacts the mud increases, the mud becomes stronger toward the lateral groove by the soil covering member as the aircraft advances while avoiding a state where the soil covering member pushes the mud forward. It can be made to be extruded, and the groove to which the agricultural powder is supplied can be appropriately filled.

According to the first feature of the present invention, when mud is soft or when there is a lot of water on the surface, the depth of entry of the soil covering member into the surface is set in a state where the posture of the soil covering member is set to an appropriate posture with respect to the longitudinal direction of the aircraft. Just make it shallower.
As a result, the area where the soil covering member is in contact with the mud is reduced, so that the mud can be prevented from being pushed out too much by the covering soil member toward the lateral groove as the aircraft progresses. The groove to which the granules are supplied can be filled appropriately.

[I] -2
According to the first feature of the present invention, since the upper part of the soil covering member is in a lateral state along the field surface, mud is pushed out toward the lateral groove by the soil covering member as the aircraft progresses. Even if mud is going to rise, the soil covering member (upper part) suppresses the mud from rising, and mud is pushed out toward the lateral groove by the soil covering member without waste. Can be filled appropriately.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the paddy field working machine of the first feature of the present invention.
The second rear portion is provided over a portion near the groove and a portion far from the groove in the first rear portion,
By supporting the second rear part so as to be swingable up and down around a fulcrum of the part of the first rear part far from the groove, the position of the second rear part is moved up and down along the first rear part. Can be changed freely
The second rear portion is connected to the first rear portion, and fixing means for fixing the position of the second rear portion is provided.

(Operation and effect of the invention)
According to the second feature of the present invention, when the position of the second rear portion is changed up and down along the first rear portion in the soil covering member, the second rear portion around the fulcrum of the portion far from the groove in the first rear portion. Is moved up and down to change the position of the second rear part up and down along the first rear part.
Therefore, the penetration depth of the portion far from the groove of the soil covering member (portion close to the fulcrum) does not change much, whereas the penetration depth of the portion close to the groove of the soil covering member (portion far from the fulcrum) penetrates the surface. The size changes greatly.

  As a result, when mud is pushed out toward the lateral groove by the soil covering member as the aircraft progresses, mud pushed out by the portion close to the groove of the soil covering member (the portion far from the fulcrum) is likely to reach the groove. In the part close to the groove of the soil covering member (part far from the fulcrum) that greatly contributes to the mud extrusion toward the groove, the change range of the penetration depth to the paddy surface is increased so that the mud condition and the paddy surface The penetration depth of the soil covering member into the paddy field can be set in accordance with a wide range of water conditions.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the paddy field working machine of the first or second feature of the present invention.
A plurality of narrow rod-shaped members that extend downward from the soil covering member and enter the rice field are provided.

(Operation and effect of the invention)
According to the third feature of the present invention, for example, when the mud is hard, the mud can be strongly pushed out toward the lateral groove by the soil covering member while the mud is crushed by the rod-like member as the airframe advances. Thus, it is possible to appropriately fill the groove to which the agricultural powder is supplied.

It is a whole side view of a riding type direct seeding machine. It is a side view of a seeding device, a fertilizer application device, and a medicine supply device. It is a rear view of a seeding device, a fertilizer application device, and a medicine supply device. It is a cross-sectional top view of the float vicinity in a sowing apparatus, a fertilizer application apparatus, and a chemical | medical agent supply apparatus. It is a perspective view which shows the frame structure of a sowing apparatus, a fertilizer application apparatus, and a chemical | medical agent supply apparatus. It is a side view in the state where the soil covering member was attached to the float. It is sectional drawing of a soil covering member. It is a disassembled perspective view of a soil covering member. It is a perspective view of a soil covering member. In 1st another form of implementation of invention, it is a perspective view of a soil covering member. In 1st another form of implementation of invention, it is sectional drawing of a soil covering member. In the 2nd other form of implementation of invention, it is a side view of the vicinity of a mud gathering member. In the 2nd another form of implementation of invention, it is a perspective view of a mud gathering member.

  The front-rear direction and the left-right direction in the embodiment of the present invention are described as follows unless otherwise specified. The forward traveling direction during the work travel of the airframe is “front”, and the backward traveling direction is “rear”. The direction corresponding to the right side is “right” and the direction corresponding to the left side is “left” based on the forward posture in the front-rear direction.

[1]
As shown in FIG. 1, a link mechanism 3 is supported at the rear of the machine body supported by the front wheel 1 and the rear wheel 2 so as to be movable up and down, and a hydraulic cylinder 4 for driving the link mechanism 3 up and down is provided. 3 is supported by a seeding device 5, a fertilizer application device 6 (corresponding to a supply device), and a medicine supply device 7 (corresponding to a supply device) to constitute a 6-row type riding type direct seeder as an example of a paddy field work machine. Has been.

[2]
Next, the frame structure that supports the seeding device 5, the fertilizer application device 6, and the medicine supply device 7 will be described.
As shown in FIGS. 2 and 5, a horizontal frame 8 in the left-right direction is provided, and a box-shaped frame portion 17 made of a plate material is connected to a central portion of the horizontal frame 8, and a boss portion is connected to the frame portion 17. 9 are connected. A front and rear horizontal frame 10 is connected to the right and left portions of the horizontal frame 8 in a rearward direction, and a vertical frame 11 is connected to the frame portion 17 and the horizontal frame 10. Directional lateral frames 12 are connected.

  As shown in FIGS. 2 and 5, a front and rear horizontal frame 13 is connected to the center, right and left of the horizontal frame 8 in the rearward direction, and a vertical frame 14 in the vertical direction is connected to the horizontal frame 13. . A bracket 18 is connected to the horizontal frame 10, and a horizontal frame 15 in the left-right direction is connected across the vertical frame 14 and the upper portion of the bracket 18.

  As shown in FIGS. 2 and 5, a bracket 13a is connected to the rear portion of the horizontal frame 13, and the rear portions of the three floats 16 can swing up and down around the horizontal axis P2 of the bracket 13a of the horizontal frame 13. It is supported. As shown in FIGS. 3 and 4, the right and left floats 16 are located on the rear side of the right and left rear wheels 2, and the center float 16 is located between the right and left rear wheels 2. A grooving device 38 for forming a draining groove on the surface is attached to the bottom surface of the rear part of the right and left floats 16.

  As shown in FIGS. 2, 4, and 5, the right and left horizontal frames 13 extend forward, and the attachment members 13 b are connected to the front portions of the right and left horizontal frames 13, so that the right and left horizontal frames are connected. A plate-like wall member 19 is connected to the 13 brackets 13b. As a result, the wall member 19 is positioned on the rear side of the rear wheel 2, and mud blown rearward from the rear wheel 2 is blown rearward from the rear wheel 2 so as not to be placed on the right and left floats 16. The mud is stopped by the wall member 19.

  As shown in FIGS. 2, 4, and 5, in the horizontal frame 8, a front and rear horizontal frame 20 is connected forwardly to a portion between the horizontal frames 13, and a rake leveling member 21 is disposed in front of the horizontal frame 20. It is connected to the part. Thereby, the leveling member 21 is located between the floats 16, and the portion between the floats 16 is leveled by the leveling members 21 on the surface.

  As shown in FIGS. 2 and 5, the upper portion of the frame portion 17 is supported on the lower portion of the rear portion of the link mechanism 3 so as to be rotatable around the front and rear axis P1, and the entire horizontal frame 8 and the like are entirely supported by the front and rear axis P1. It is supported so that it can roll freely. A bracket 12a is forwardly coupled to the right and left portions of the horizontal frame 12, and a spring 22 is connected across the upper portion of the rear portion of the link mechanism 3 and the bracket 12a of the horizontal frame 12. The whole is urged in a posture parallel to the aircraft.

[3]
Next, the support structure of the seeding device 5 will be described.
As shown in FIGS. 2 and 3, in the seeding device 5, six feeding parts 23 are connected to the horizontal frame 15 at a predetermined interval, and a guide member 24 is connected to the lower part of the feeding part 23. The guide member 24 has a U-shaped cross section with the rear side open. Two hoppers 25 for storing the seed coat treated with iron are provided, and the hoppers 25 are connected to the upper part of the three feeding parts 23.

As a result, as shown in FIGS. 2 and 3, the seeds of the hopper 25 are fed out by a predetermined amount by the feeding unit 23, and the seeds fall through the inside of the guide member 24 without contacting the inner surface of the guide member 24. , Supplied to the surface (surface).
As described above, the seeding device 5 is configured to include the feeding unit 23, the guide member 24, the hopper 25, and the like, and supplies a plurality of seed pods in a lump form to the surface (surface) immediately below the feeding unit 23. It is configured as a surface seeding type (spot seeding type) to be (spotted).

[4]
Next, the support structure of the fertilizer applicator 6 will be described.
As shown in FIGS. 2 and 3, in the fertilizer applying device 6, six feeding portions 26 are connected to the horizontal frame 12 at a predetermined interval, and a hopper 27 for storing fertilizer (corresponding to agricultural granular material) is provided. Two hoppers 27 are connected across the upper part of the three feeding portions 26. As shown in FIGS. 2, 3, and 4, the groove plate 28 and the soil covering member 31 are connected to the float 16, and the groove forming device 29 is connected to the groove cutting plate 28. The hose 30 is connected over the.

  As a result, as shown in FIGS. 2, 3, and 4, the fertilizer in the hopper 27 is fed out by the feeding unit 26, supplied from the hose 30 to the grooving device 29, and on the surface by the grooving plate 28 and the grooving device 29. Fertilizer is supplied to the formed groove, and mud is pushed out toward the lateral groove by the covering member 31 as the airframe advances, so that the groove supplied with fertilizer is filled.

  As described above, the fertilizer application device 6 includes the feeding portion 26, the hopper 27, the grooving plate 28, the grooving device 29, the hose 30, the soil covering member 31, and the like. The fertilizer is configured to be supplied to a position below the rice field at a position on the front side of the position (a state where the fertilizer is located at a position below the rice field next to the seed potato).

[5]
Next, the support structure of the medicine supply device 7 will be described.
As shown in FIGS. 2 and 3, in the medicine supply device 7, six feeding parts 32 are connected to the horizontal frame 12 at a predetermined interval, and a hopper 33 for storing medicine (corresponding to agricultural powder). Are provided, and a hopper 33 is connected over the upper part of the two feeding portions 32. As shown in FIGS. 2, 3, and 4, the groove plate 34 and the soil covering member 37 are connected to the float 16, and the groove forming device 35 is connected to the groove cutting plate 34. A hose 36 is connected over the two.

  As a result, as shown in FIGS. 2, 3, and 4, the medicine in the hopper 33 is fed out by the feeding portion 32, supplied from the hose 36 to the grooving device 35, and on the surface by the grooving plate 34 and the grooving device 35. The medicine is supplied to the formed groove, and mud is pushed out toward the lateral groove by the covering member 37 as the machine body advances, so that the groove to which the medicine is supplied is filled.

  As described above, the medicine supply device 7 includes the feeding portion 32, the hopper 33, the grooving plate 34, the grooving device 35, the hose 36, the soil covering member 37, and the like. In this position, the medicine is supplied to a position below the rice field (a state in which the medicine is located directly under the seed pod).

As shown in FIGS. 1 and 2, the input shaft 40 is supported by the boss portion 9, and the transmission shaft 39 is connected to the input shaft 40, and the power of the engine (not shown) of the fuselage is transmitted to the transmission shaft 39. Is transmitted to the input shaft 40.
The power of the input shaft 40 is split between the two transmission systems, the power is transmitted from one transmission system to the feeding unit 23 of the seeding device 5, and then the power is transmitted to the feeding unit 32 of the medicine supply device 7. The power is transmitted from the other transmission system to the feeding portion 26 of the fertilizer application device 6.

[6]
Next, the structure of the soil covering members 31 and 37 will be described.
As shown in FIGS. 7, 8, and 9, the soil covering members 31 and 37 are formed by bending a long and narrow plate member along a bending line along the longitudinal direction, and a second and long member 42 (second plate). 2 corresponds to the rear portion).

  As shown in FIGS. 7, 8, and 9, the first member 41 includes an upper portion 41a and a rear portion 41b (corresponding to the first rear portion) with a bend line as a boundary, and two connections are made to the upper portion 41a. A hole 41c is opened. A pin 41d (corresponding to a fulcrum) is fixed to the first member 41 (rear portion 41b), the second member 42 is swingably connected to the pin 41d of the first member 41, and the second member 42 is the second member 42. The first member 41 can swing around the pin 41d of the first member 41 along the surface of the rear portion 41b of the first member 41 (a portion close to the groove and a portion far from the groove in the first member 41 (rear portion 41b)). And the second rear portion 42 is provided).

As shown in FIGS. 7, 8, and 9, the long hole 42 a is opened in the second member 42, and the connecting hole 41 e is opened in the rear portion 41 b of the first member 41. Bolts 43 (corresponding to fixing means) are inserted into the connecting holes 41e of the first member 41 (rear portion 41b) and the long holes 42a of the second member 42, and nuts 44 (corresponding to fixing means) and washers 45 are inserted into the bolts 43. The second member 42 is fixed to the first member 41 (rear portion 41b) by attaching and tightening the bolt 43 and the nut 44.
In this case, the round head of the bolt 43 is positioned on the rear portion 41b side of the first member 41, and the nut 44 and the washer 45 are positioned on the second member 42 side.

[7]
Next, a state where the soil covering members 31 and 37 are attached to the float 16 will be described.
As shown in FIGS. 4 and 6, the bolt 49 having a round head is passed through the connection hole 41 c of the first member 41 to connect the first member 41 to the float 16. Connect to the bottom surface 16 of the float 16. In a state of being connected to the float 16, the soil covering members 31 and 37 extend from the left and right center sides of the float 16 to the diagonally rear side on the right lateral side (diagonal rear side on the left lateral side).
In this case, one of the connection holes 41c of the first member 41 is configured as a long hole, and the diagonal direction from the left and right center side of the float 16 to the right side is within the range of the connection hole 41c (long hole) of the first member 41. It is possible to adjust the posture (angle) of the soil covering members 31 and 37 rearward (diagonally rearward on the left side).

  As shown in FIGS. 4 and 6, when the soil covering members 31 and 37 are connected to the float 16, the upper portion 41 a of the first member 41 is in a state parallel to the bottom surface 16 a of the float 16. The upper portion 41a of the member 41 is oriented sideways along the field. In a state where the float 16 is in contact with the rice field, the upper portion 41a of the first member 41 is located at substantially the same position as the rice field or a position slightly lower than the rice field (a position below the rice field).

  As shown in FIGS. 4, 6, and 7, the rear portion 41 b of the first member 41 extends obliquely rearward and downward from the rear portion of the upper portion 41 a of the first member 41. From the rear portion 41, the second member 42 is extended obliquely backward and downward, and the rear portion 41b of the first member 41 and the second member 42 enter the rice field.

  As shown in FIGS. 6, 7, and 9, the bolt 43 and the nut 44 are slightly loosened, and the second member 42 is swung around the pin 41 d of the first member 41 (rear portion 41 b), so that the first member 41 By changing the position of the second member 42 relative to the rear portion 41b up and down along the rear portion 41b of the first member 41, the soil covering members 31, 37 (the rear portion 41b and the second member 42 of the first member 41) The depth of entry into the rice field can be changed.

  As shown in FIGS. 4, 6, and 7, the base portions of the covering members 31 and 37 (portions close to the pins 41 d of the first member 41) (formed on the rice field by the grooving plates 28 and 34 and the groove forming devices 29 and 35). The portion far from the groove) and the end portions of the soil covering members 31, 37 (the portion on the side close to the groove formed on the surface by the groove cutting plates 28, 34 and the groove forming devices 29, 35) (the portion on the bolt 43 side) ), The depth of penetration of the end portions of the soil covering members 31, 37 into the field surface is deeper than the depth of penetration of the base portions of the soil covering members 31, 37 into the field surface.

  As shown in FIGS. 4, 6, and 7, the second member 42 is swung around the pin 41 d of the first member 41 (rear portion 41 b) to cover the soil covering members 31 and 37 (the rear portion 41 b of the first member 41 and When the depth of entry of the second member 42) into the field surface is changed, the depth of entry of the base portions of the soil covering members 31, 37 into the field surface does not change much, whereas the field surface at the end of the soil covering members 31, 37 The depth of entry into is greatly changed.

In this case, as shown in FIG. 6, the upper portion 41a of the first member 41 is positioned slightly higher than the rice field (upper side of the rice field) by setting the connecting position of the covering members 31, 37 to the float 16 slightly upward. Position).
As described above, by setting the connecting position of the covering members 31 and 37 to the float 16 slightly upward, the rear portion 41 of the first member 41 does not enter the surface, and the second member 42 enters the surface. The state to do can be obtained.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], as shown in FIGS. 10 and 11, a plurality of narrow rod-shaped (square bar-shaped) rod-shaped members 46 are arranged at predetermined intervals in the soil covering members 31 and 37. The rod-shaped member 46 may be configured to extend obliquely rearward and downward from the second member 42. As a result, the rod-shaped member 46 extends rearward in a state substantially parallel to the advancing direction of the airframe in plan view, and the rod-shaped member 46 enters the rice field deeper than the second member 42.

In this case, the rod-shaped member 46 is not in a state parallel to the advancing direction of the airframe in plan view, and the rod-shaped member 46 is formed from the second member 42 on the surface by the groove cutting plates 28 and 34 and the groove forming devices 29 and 35. You may comprise so that it may extend a little toward the groove | channel.
The above rod-shaped member 46 may be provided in the soil covering member 31 without being provided in the soil covering member 37, and the rod member 46 may be provided in the soil covering member 37 without being provided in the soil covering member 31.

[Second Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention], the mudguard member 47 shown in FIG. 12 and FIG. Also good.
As shown in FIGS. 12 and 13, the mud collecting member 47 includes an upper base portion 47a, right and left arm portions 47b extending obliquely downward from right and left end portions of the lower portion of the base portion 47a, and front portions of the arm portions 47b. A front side portion 47c extending obliquely outward from the portion is provided.

As shown in FIGS. 12 and 13, a plurality of mounting holes 47 d are opened in the vertical direction in the base 47 a of the mud draw member 47, and a convex portion (not shown) at the rear of the groove forming device 35 is provided. One of the mounting holes 47 d of the mud sucking member 47 is attached, and the base 47 a of the mud sucking member 47 is connected to the rear part of the groove forming device 35 by the ring-shaped connecting member 48.
In this case, by changing the attachment hole 47d of the mud draw member 47 attached to the convex portion at the rear of the groove producing device 35, the connection position of the mud draw member 47 to the groove producing device 35 is changed to a plurality of positions in the vertical direction. can do.

  As shown in FIGS. 12 and 13, the right and left arms 47 b of the mud sucking member 47 are disposed behind the right and left side walls 35 a of the groove forming device 35 in a state where the mud collecting member 47 is connected to the groove forming device 35. And the front side portion 47c is located, and the right and left arms 47b and the front side portion 47c of the mud gathering member 47 in the plan view extend the rearward extension lines of the right and left side walls 35a of the groove producing device 35. It goes into the inside of the grooving device 35 beyond.

With the above structure, as the machine body advances, a groove is formed on the surface by the grooving plate 34 and the grooving device 35, and the medicine is supplied to the groove. Mud is drawn by the side 47c, the lateral wall of the groove is broken inward, and the groove is filled to some extent.
You may provide the above mud gathering member 47 in both the groovers 29 and 35. The mud collecting member 47 may be provided in the groove forming device 29 instead of being provided in the groove forming device 35.

When the seeding device is not a surface sowing type, but is configured to supply seed pods to a groove formed on the surface by a groove grooving device, and provided with a soil covering member that pushes mud toward the groove to which the seed potatoes are supplied, this covering soil The present invention can also be applied to members.
The present invention can be applied not only to a riding type direct seeder, but also to a riding type rice transplanter equipped with a fertilizer application device and a medicine supply device.

6,7 Supply device 29,35 Groover 31,37 Soil covering member 41a Upper part 41b First rear part 41d Support point 42 Second part 43,44 Connecting means 46 Rod-like member

Claims (3)

A grooving device that forms grooves on the rice field as the machine progresses, and a supply device that supplies agricultural powder particles to the grooves formed on the rice field by the grooving device,
A mud is pushed into the groove as the aircraft progresses while entering the rice field at a position on the side of the grooving device, and includes a soil covering member that fills the groove supplied with agricultural powder.
The soil covering member includes a laterally upper portion along the field, a first rear part extending downward from the rear part of the upper part, and a first part extending downward from the first rear part and entering the field. With two rear parts,
A paddy field work machine configured to change the depth of entry of the covering member into the paddy surface by changing the position of the second rear portion relative to the first rear portion up and down along the first rear portion. . The second rear portion is provided over a portion near the groove and a portion far from the groove in the first rear portion,
By supporting the second rear part so as to be swingable up and down around a fulcrum of the part of the first rear part far from the groove, the position of the second rear part is moved up and down along the first rear part. Can be changed freely
2. The paddy field work machine according to claim 1, further comprising a fixing unit that connects the second rear part to the first rear part and fixes a position of the second rear part.   The paddy field work machine according to claim 1 or 2, comprising a plurality of narrow rod-shaped members extending downward from the soil covering member and entering the rice field.

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