JP2011211952A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paddy field working machine that is changed by a simple operation from a state in which powder particles are supplied in an embedded state in soil of paddy field to a state in which powder particles are supplied to the surface of paddy field or in its vicinity.SOLUTION: The paddy field working machine is equipped with a powder particle feeder for feeding powder particles to a paddy field with traveling of travel machine at a plurality of feed parts arranged in the direction of the width of the machine, and a feed position adjustment mechanism KT for changing the tip positions of a powder particle feed path of the plurality of feed parts of the powder particle feeder between a low-position feed state in which the tip positions are simultaneously driven into downward by a set depth or more from the paddy field and a high-position feed state in which the tip positions of the powder particle feed path are positioned at a position shallower than a set depth from the paddy field or at a position in the vicinity of the upper part of the paddy field.

Description

  The present invention relates to a paddy field work machine provided with a granular material supply device that supplies granular material to a paddy surface at a plurality of supply points arranged in the horizontal direction of the vehicle body as the traveling vehicle body travels.

  The paddy field machine includes a fertilizer or a fertilizer that supplies an example of powder as fertilizer or medicine to the surface as a powder supply device, and a direct sowing device that supplies seed rice as an example of powder to the surface. There are those provided, and those equipped with both a fertilizer and a direct sowing device.

  And in this type of paddy field machine, in the past, with both a fertilizer application device and a direct sowing device as a granular material supply device, the tip position of the fertilizer supply path as a granular material supply route in the fertilizer application, and In some cases, each of the tip positions of the seed meal supply path as the powder supply path in the direct seeding device is fixed at a position at a certain depth with respect to the rice field (see, for example, Patent Document 1).

  In addition, a fertilizer application device and a direct seeding device are provided at the rear part of the traveling machine body, and the fertilizer application device includes a grooving device that enters the rice field at the tip position of the fertilizer supply path and forms a supply groove on the rice field. Similarly, the direct sowing apparatus is also configured with a groove generator that enters the paddy surface at the tip position of the seed supply path and forms a supply groove on the paddy surface, and is supported by the support frame along the surface of the paddy surface. Thus, the fertilizer application device and the direct seeding device each have a configuration in which the grooving device is attached in a fixed position in a state of projecting downward from the grounding surface of the grounding float. Since the grounding float follows the surface of the rice field, the tip position of the groover attached to the grounding float in a fixed position is fixed at a position having a constant depth with respect to the field surface.

  In short, conventionally, the tip position of the powder supply path in the powder supply apparatus has been fixed at a position where it has a constant depth with respect to the rice field.

JP 2002-315408 A

  As the granular material supplied by the granular material supply device, not only the granular material that is suitable to be supplied into the mud having a certain depth below the surface of the field, but also the surface of the surface or the mud of the surface. There is also a granular material that is suitable to be supplied to a location close to the inner surface.

If explanation is added, first, the case where a medicine is supplied as a granular material is explained.
As a drug, for example, a drug having a medicinal effect on diseases such as potato disease is generally slow-acting, and it is easy to exert a good medicinal effect by supplying it into mud soil at a certain depth below the surface of the rice field. It is. However, if the drug is a fast-acting drug such as a herbicide, it is better to supply it to the surface of the rice field or a position close to the surface, rather than in a certain depth of mud below the surface. It works.

Next, the case where seed meal is supplied as a granular material will be described.
Conventionally, calpa-coated seed potatoes (calpa seed potatoes) have been mainly used as seed varieties. This carpa seed meal is a seed meal in which an outer surface is coated with a chemical that generates oxygen when dissolved in water so that the seed meal buried in the rice field does not suffocate. In other words, when supplying this kalpa seed pod to the rice field, using the direct sowing apparatus with the conventional configuration as described above, if it is supplied and buried in mud soil at a certain depth below the rice field, the seed potatoes will be seeded on birds, etc. It is possible to germinate well without suffocating the seed pods in a state where they are not eaten.

  Recently, apart from the above-described Kalpa seed meal, an iron-coated seed meal in which the seed meal is coated with iron powder has been used. Since this iron-coated seed potato does not generate oxygen in a state where it is buried in the rice field like the Calpa seed potato, it is fixed to the lower side of the rice field using the direct seeding device of the conventional configuration like the Calpa seed potato. If supplied and buried in deep mud, seeds may be suffocated. Therefore, it is necessary to supply such iron-coated seed potatoes to the surface of the rice field or a position close to the surface so that the seed moths can breathe.

  However, in the above-described conventional configuration, the tip position of the powder supply path in the powder supply apparatus is fixed at a position that is a constant depth with respect to the rice field, so as a fertilizer, a calpa seed meal, etc. It can be used suitably when supplying granular material that is suitable to be supplied into mud soil of a certain depth below the surface of the rice field. As in the case of iron coating seeds or the like, it is not possible to supply the type of granular material that is supplied to the surface of the rice field.

  Therefore, when supplying a granular material of the kind that is supplied to the surface of the rice field or in the vicinity thereof as a granular material, for example, in order to change the mounting position of the grooving device to the grounded float, On the other hand, it is necessary to replace the grooving device, etc., but the powder supply device supplies the powder to the rice field at a plurality of supply points arranged in the width direction of the aircraft as the vehicle runs. The troublesome work of replacing the groover or the like at each of the plurality of supply points is required.

  The object of the present invention is to switch between a state in which powder is supplied while being embedded in the soil of the surface and a state of supplying powder supplied on or near the surface of the surface with a simple operation. The paddy field work machine which becomes becomes.

  A paddy field work machine according to the present invention is provided with a granular material supply device that supplies granular material to a rice field at a plurality of supply locations arranged in the horizontal direction of the vehicle body as the traveling vehicle body travels. One characteristic configuration is that the tip position of the powder supply path in each of the plurality of supply locations of the powder supply apparatus is simultaneously supplied from a low position in which the tip position of the powder supply path enters the lower portion than the set depth, and from the surface. A supply position adjusting mechanism is provided that can be switched to a position that is shallower than the set depth or a high position supply state that is located near the upper position of the rice field.

  According to the first characteristic configuration, using the supply position adjusting mechanism, the tip position of the granular material supply path at each of the plurality of supply locations of the granular material supply device is simultaneously entered below the set depth from the surface. Can be switched between a low-position supply state to be set and a high-position supply state to be located at a position shallower than the set depth from the rice field or a position near the upper side of the rice field.

  As a powder, for example, when supplying Kalpa seed soak that does not suffocate even if it is embedded in mud, it is set from the top by switching to the low position supply state with the supply position adjustment mechanism. Since powder particles can be supplied to the position where it penetrates below the depth more than the depth, the Karpa seed pod is supplied to the rice field in a state where it can be germinated well without the seed pod being eaten by birds, etc. Can do.

  And, for example, when supplying iron coating seeds to the surface as a granular material, by switching to a high position supply state by the supply position adjustment mechanism, a position shallower than the set depth from the surface or near the upper surface of the surface A granular material can be supplied to a position and an iron coating seed can be supplied to a rice field in the state which avoids suffocation.

  In addition, when supplying a slow-acting drug such as a fertilizer or a drug against tuber disease, for example, by switching to a low-position supply state with a supply position adjustment mechanism, Since it is possible to supply the granular material to a position that has entered deeper than the set depth, it is possible to supply fertilizer in a state where it is easy to exert a good growth effect, and in a state where it is easy to exert a good medicinal effect The drug can be supplied.

  And, for example, when supplying a fast-acting agent such as a herbicide to the surface as a granular material, the position is shallower than the set depth from the surface by switching to a high-position supply state with a supply position adjustment mechanism. Or since a granular material can be supplied to the upper vicinity position of a rice field, it can supply to the surface of a rice field in the state which acts favorably as a chemical | medical agent.

  In addition, the supply position adjusting mechanism can switch between the low-position supply state and the high-position supply state at the same time for the tip position of the powder supply path in each of the plurality of supply locations. There is no trouble of switching the tip position of the powder supply path in each of the supply locations, and the tip position of the powder supply path can be changed with a simple operation.

  Therefore, according to the first feature configuration, in a simple operation, the powder is supplied in a state of being embedded in the soil of the surface, and the state of supplying the powder supplied on or near the surface of the surface. We have been able to provide paddy field machines that can be switched.

  According to a second feature configuration of the present invention, in addition to the first feature configuration, the supply position adjusting mechanism is configured to supply the granular material at each of a plurality of supply locations in each of the low position supply state and the high position supply state. This is because the vertical height of the tip position of the path can be finely adjusted.

  According to the second feature configuration, it is possible to finely adjust the vertical height of the tip position of the powder supply path in each of the plurality of supply locations in each of the low position supply state and the high position supply state. For example, even if there is a difference in the hardness of mud in the field, or the traveling speed of the traveling machine may change, it is appropriate to adapt to the changed work situation according to the difference in the work situation. It is possible to adjust the vertical height of the tip position of the powder supply path in each of the plurality of supply locations so as to be in a proper position.

  Therefore, according to the second feature configuration, a plurality of supplies are provided so as to be in an appropriate position according to a difference in work situation such as a difference in the hardness of mud in the field or a change in the traveling speed of the traveling machine body. It is possible to adjust the vertical height of the tip position of the granular material supply path in each of the locations, and a satisfactory granular material supply operation can be performed.

  The third characteristic configuration of the present invention includes, in addition to the first characteristic configuration or the second characteristic configuration, a supply device for different types of granular material that supplies a different type of granular material different from the granular material to the rice field. Configured, and each of the powder supply device and the supply device for different types of powder enters the surface at the tip position of the powder supply path and forms a groove for supplying powder on the surface, And a soil covering member that backfills the groove formed on the surface of the groove by the groover, and the groover of the supply device for the different types of powder is more than the groover of the powder supply device. Provided with the position shifted in front of the machine body, and the soil covering member corresponding to the groove producing device of the supply device for different types of granular materials is on the rear side in the machine longitudinal direction of the groove producing machine and the machine body width Provided in a state positioned at one side of the direction, the groove producing device of the powder and granular material supply device, In that it is provided in the operation groove instrument state of the aircraft to a longitudinal direction of the rear side was and is positioned at the other side portion of the vehicle body width direction of the seed granular-body supply device.

  According to the 3rd characteristic structure, it is comprised including the supply apparatus for another kind granular material which supplies the different kind of granular material different from a granular material to a rice field. For example, when supplying seed meal as the granular material, when supplying fertilizer or drug as another granular material, or when supplying fertilizer or chemical as the granular material, different seed powder In some cases, seed pods are supplied as granules.

  And as the machine progresses, the groover of the supply device for different types of granular materials will form a groove in the surface while pushing the mud away in the left and right direction. Since it is provided in a state where it is located at the rear side in the longitudinal direction of the machine body and in the other side of the machine body width direction of the groove device of the supply apparatus for powder body, the groove machine of the powder body supply apparatus is Then, mud is pushed from the other side of the machine body width direction of the groove toward the groove formed on the surface by the groover of the supply device for different types of granular materials, and the groove generator of the supply device for different types of granular materials is A function similar to that of the soil covering member is provided.

On the other hand, since a soil covering member corresponding to the groove forming device of the supply device for different types of granular materials is provided at one side position in the horizontal direction of the machine body, it is formed on the surface by the groove forming device of the supply device for different types of granular materials. Mud is pushed from one side of the machine body width direction of the groove toward the groove. That is, a state similar to the state in which the soil covering members are provided on both sides in the left and right direction behind the supply device for different types of granular materials is obtained.
That is, the grooving device of the granular material supply device can also be used as a soil covering member, and there is little need to provide a soil covering member on both sides in the left-right direction behind the separate powder material supply device.

  Therefore, according to the third feature configuration, while the granular material and another type of different granular material can be supplied to the rice field, When a groove is formed on the surface and another type of granular material is supplied to the groove and buried in the surface, the grooving device of the granular material supply device can also be used as a soil covering member. The need for providing soil covering members on both sides in the left-right direction behind the groove producing device of the body supply device is reduced, and the structure can be simplified and the cost can be reduced.

  In addition to the third feature configuration, the fourth feature configuration of the present invention is such that the separate powder supply device supplies fertilizer or a drug to the surface as the separate powder, and the powder supply The apparatus is that the seed meal is supplied to the rice field as the granular material.

  According to 4th characteristic structure, the supply apparatus for different seed | species granular materials will supply a fertilizer or a chemical | medical agent to a rice field, and a granular material supply apparatus will supply a seed candy to a rice field. That is, a fertilizer, a chemical | medical agent, and a seed soy can be simultaneously supplied to a rice field.

  Therefore, according to the fourth characteristic configuration, while it is possible to simplify the structure by sharing the soil covering member, the fertilizer and the drug It became possible to supply the seeds to the rice field at the same time.

  The fifth characteristic configuration of the present invention is provided with a soil covering position adjusting mechanism capable of changing and adjusting the height of action of the soil covering member with respect to the field surface in the powder and granular material supply device in addition to the third characteristic configuration or the fourth characteristic configuration. There is in point.

  According to the fifth feature configuration, since the height of action of the soil covering member on the surface of the soil covering member in the powder body supplying device can be changed and adjusted, when supplying the powder in a state of being embedded in the soil of the surface, When the hardness is different, or when the tip position of the powder supply path is changed and adjusted, the working height of the soil covering member with respect to the paddy surface is changed to an appropriate height according to the difference in work conditions. It becomes possible to do.

  Therefore, according to the 5th characteristic composition, it becomes possible to change and adjust the action height with respect to the field of a soil covering member to an appropriate height according to the difference in work conditions, and about each of a granular material and another kind granular material In the case of supplying in the state of embedding in the soil of the rice field, it became possible to supply to the rice field in a state in which it can be satisfactorily embedded in the rice field for any of the different types of granular materials and powder particles. .

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 a side view of a fertilizer application (hopper and feeding part). It is a side view of a direct sowing apparatus and a leveling apparatus. It is a rear view of a fertilizer applicator (a hopper and a feeding part). It is a rear view of a direct seeding apparatus. It is a cross-sectional plan view of the vicinity of the feeding part of the direct seeding device. It is a cross-sectional plan view of the vicinity of the seed sowing groove device of the direct sowing apparatus. It is a side view of a supply position adjustment mechanism. It is a cross-sectional top view of a supply position adjustment mechanism. It is a disassembled perspective view of a supply position adjustment mechanism. (A) is a side view of the soil covering position adjusting mechanism, and (b) is a plan view showing a locking structure of the soil covering depth adjusting lever. It is a top view of a soil covering position adjustment mechanism. It is a side view of the vicinity of a center float. It is a disassembled perspective view which shows the support structure of a center float. It is a control block diagram.

  Hereinafter, a case where an embodiment of a paddy field working machine according to the present invention is applied to a riding type direct seeding machine will be described based on the drawings.

  As shown in FIG. 1 and FIG. 2, a link mechanism 3 is supported by a rear portion of a traveling machine body supported by right and left front wheels 1 and right and left rear wheels 2, and the link mechanism 3 is moved up and down. A hydraulic cylinder 4 is provided, and a direct seeding device 5 as a powder supply device is supported by the link mechanism 3 to constitute a riding type direct seeding machine as a paddy field work machine. This riding type direct sowing machine is provided with a leveling device 37 between the traveling machine body and the direct sowing apparatus 5 while being supported by the direct sowing apparatus 5, and the fertilizer application device 20 is supported at the rear part of the traveling machine body.

  As shown in FIGS. 1 and 3, the traveling aircraft has a right and left aircraft frame 28 arranged in the front-rear direction, and a vertical wall-like right and left vertical wall frame 29 of the right and left aircraft frames 28. Connected to the rear. The link mechanism 3 includes a single top link 3a, two lower links 3b, a top link 3a, and a vertical link 3c connected across the rear portion of the lower link 3b. The top link 3a of the link mechanism 3 and the hydraulic cylinder 4 are supported by the right and left support plates 29 so as to be able to swing up and down, and the lower link 3b of the link mechanism 3 swings up and down at the rear of the right and left body frames 28. It is supported freely.

Next, the fertilizer application device 20 will be described.
As shown in FIGS. 1, 3, and 5, a support frame 30 in which a round pipe material is bent in an L shape is connected to the vertical wall frame 29, and is rotatable around a horizontal axis P <b> 1 at the upper end of the support frame 30. The horizontal frame 31 supported by each is provided with a feeding portion 15 for applying fertilizer for two strips, respectively, and four hoppers 14 located at the top of each feeding portion 15 for storing granular fertilizer. . A frame 35 connected to the horizontal frame 31 extends forward, the intermediate portion of the hopper 14 is supported by the frame 35, and the frame 35 is connected to the support frame 33 via the buckle mechanism 36.

  As shown in FIG. 1, the blower 16 is provided below the driver seat 21 between the right and left vertical wall frames 29, and a duct 32 extending in a bifurcated manner from the blower 16 is provided in the feeding portion 15. It is connected. As shown in FIG. 6, two fertilizer grooves 17 are provided in the center ground float (center float) 9, and two fertilizer grooves 17 are disposed in the ground float (side float) 10 located on both sides of the center float 9. One fertilizer groover 17 is provided on the grounding float (side float) 11 on both the left and right ends. A fertilizer covering soil member 88 for refilling grooves formed on the field surface G by the fertilizer groover 17 is provided on the rear side of the body of each fertilizer groover 17.

As shown in FIGS. 1 and 2, flexible hoses 18 and 19 are connected across the feeding portion 15 and the fertilizer groover 17, and an intermediate pipe 130 connecting the hoses 18 and 19 is connected. (Made of hard resin) is connected to and supported by the vertical frames 25 and 26 (see FIG. 6).
As described above, the fertilizer application device 20 is configured by the hopper 14, the feeding portion 15, the blower 16, the duct 32, the fertilizer groover 17, the soil covering member 88 for fertilization, the hoses 18, 19 and the like.

Next, the fertilizer groover 17 will be described.
As shown in FIG. 4, the groove-cutting member 84 having a triangular shape in a side view and a tapered shape (wedge shape) in a plan view is appropriately spaced in the lateral width direction of the center float 9 and the side floats 10 and 11. The grooved member 84 is provided in a connected state, and projects downward from the bottom surface of each float 9, 10, 11.

As shown in FIGS. 4 and 8, the fertilizer groover 17 formed in a U shape in plan view is connected to the rear portion of the groove member 84, and the bellows tubular connecting member 85 made of rubber is used as the fertilizer. The hose 19 is inserted into the connecting member 85 by being attached to the upper part of the groove generator 17.
Therefore, the lower end position of the fertilizer grooving device 17 is fixed at a position having a constant depth with respect to the bottom surfaces (field surface G) of the center float 9 and the side floats 10 and 11.

Next, the outline | summary of the direct seeding apparatus 5 is demonstrated.
As shown in FIG. 6, the direct sowing apparatus 5 includes four hoppers 6 corresponding to two strips for storing seed potatoes, four feeding sections 7 corresponding to the two strips, and one blower 8. 9 and side floats 10 and 11 are arranged side by side in the left-right direction. Further, eight seed grooving grooves 12 arranged at a predetermined interval in the left-right direction, and a soil covering member 88 for direct sowing that backfills the grooves formed in the rice field G by the seed grooving grooves 12 are provided, and the feeding section A hose 13 is connected across 7 and the seed grooving machine 12.

  In the rear portion of the direct seeding device 5, four groove forming members 99 that form grooves on the surface G are provided at intervals in the machine body width direction. The groove forming member 99 is supported so as to be swingable up and down around the horizontal axis P5 in an action state where it contacts the surface G and a retreat state where the groove formation member 99 rises greatly above the surface G.

  That is, as shown in FIG. 4, four support arms 135 are integrally extended on the fulcrum shaft 134 that is supported in a position-fixed state and rotatable around the horizontal axis P <b> 5 at intervals in the horizontal direction of the body. The groove forming member 99 is rotatably supported at the tip of each support arm 135. A bracket 136 provided on the fulcrum shaft 134 and an operation lever 137 provided on the front side of the body of the direct seeding device 5 are interlocked and connected, and the operation operation of the groove forming member 99 is switched between the operation state and the retracted state by the operation lever 137. Is configured to do. The groove forming member 99 is configured to swing downward and urged downward by a spring 138 in the applied state to form a drainage groove on the surface G.

  As shown in FIG. 9, the fulcrum shaft 134 is rotated by a bearing portion 139a formed on a bracket 48a connected to rear end portions of five float support frames 48 connected to the main frame 24 as will be described later. It is supported freely.

  As shown in FIGS. 1, 2, 6, and 7, right and left markers 22 are provided on the right and left portions of the direct seeding device 5, and an action posture that contacts the surface G to form an index, And it is comprised so that it can operate freely in the stowed attitude | position (refer FIG.1, FIG.6 etc.) which left | separated upward from the surface G. The right and left markers 22 are configured to include an arm portion 22a supported by the direct seeding device 5 so as to be swingable up and down, and a rotating body 22b supported freely at the tip of the arm portion 22a. An electric motor 23 is provided for operating the right and left markers 22 to the working posture and the retracted posture.

Next, the overall structure and support structure of the direct seeding device 5 will be described.
As shown in FIGS. 6, 7, and 8, a main frame 24 having a square pipe shape facing in the left-right direction is provided, and two vertical frames 25 are connected in the vicinity of the center of the left and right of the main frame 24. Two vertical frames 26 are connected to the right and left portions, and a horizontal frame 27 facing in the left-right direction is connected to the upper and lower intermediate portions of the vertical frames 25 and 26.

  A horizontal frame 38 facing in the left-right direction is connected over the upper portions of the vertical frames 25 and 26, and a horizontal frame 39 facing forward is connected to the upper portion of the vertical frame 26. A horizontal frame 40 facing in the left-right direction is connected across the front portion of the horizontal frame 39, and a horizontal frame 41 facing in the front-rear direction is connected across the horizontal frames 38, 40.

  A horizontal frame 42 facing in the left-right direction is connected to the lower part of the vertical frame 25, a vertical frame 43 is connected to the horizontal frame 42 and the main frame 24, and a rolling boss portion 44 is connected to the main frame 24 and the main frame 24. It is connected through the vertical frame 43. A support shaft (not shown) facing in the front-rear direction is provided at a lower portion of the vertical link 3c of the link mechanism 3, and a boss portion 44 is externally fitted to the support shaft of the link mechanism 3 so as to be rotatable (rollable). .

  A vertical frame 89 is connected to the horizontal frame 39 and extends upward from the front. A hook 89a connected to the vertical frame 89 extends right and left (outward). As shown in FIGS. 6 and 7, an arm 39a is connected to the right horizontal frame 39 and extends rightward (outward). An arm 26a is connected to the left vertical frame 26, and the lower side of the blower 8 and the electric motor 45 is extended leftward (outward).

  As a result, the entire direct seeding device 5 is supported on the main frame 24 and the like, and the direct seeding device 5 is supported so as to be able to roll around the front and rear axis P2 of the support shaft (boss portion 44) of the link mechanism 3. The link mechanism 3 is supported so as to be movable up and down.

Next, a support structure for the feeding portion 7 and the hopper 6 in the direct seeding device 5 will be described.
As shown in FIG. 4, the feeding portion 7 is connected to the horizontal frames 38, 40 so as to be positioned between the horizontal frames 38, 40, and four hoppers 6 for storing seeds are located at the top of the feeding portion 7. The four hoppers 6 are connected to each other. In this case, as shown in FIG. 2, the overall width of the four hoppers 6 is substantially the same as the overall width of the four hoppers 14. The right and left end portions of the four hoppers 14 and the entire right and left end portions of the four hoppers 14 are located at substantially the same position (when viewed from the front-rear direction, the entire right and left end portions of the four hoppers 6 The entire right and left end portions of the four hoppers 14 are located at substantially the same position).

As shown in FIG. 6, the blower 8 is connected to the left vertical frame 26, and the rotation axis of a rotary blade (not shown) inside the blower 8 is in a state of facing the longitudinal direction of the machine body. An electric motor 45 for driving 8 is connected to the front portion of the blower 8, and an intake cover 46 having a downward intake port 46 a is connected to the rear portion of the blower 8. A duct 47 is extended from the blower 8, and the duct 47 is connected to the feeding portion 7, and the hose 13 is connected across the feeding portion 7 and the seed soaking groove 12.
When the right and left markers 22 are operated to the retracted posture, the right and left markers 22 can be held in the retracted posture by hanging them on the hooks 89a of the vertical frame 89.

Next, the support structure of the center float 9 and the side floats 10 and 11 in the direct seeding device 5 will be described.
As shown in FIGS. 8, 14, and 15, five float support frames 48 are connected to the lower portion of the main frame 24 and extend rearward, and are connected to the rear end of the float support frame 48. A bracket 48a extends downward.
The center float 9 is made of synthetic resin by blow molding, and a U-shaped metal support bracket 82 is connected to the rear portion of the center float 9 in a front view. The support pin 77 is inserted in the bracket 48a and the support bracket 82 of the float support frame 48 so as to face in the left-right direction. An arm 79 bent in a crank shape in plan view is supported around a support pin 77 (corresponding to a horizontal axis) so as to be swingable up and down and extends forward, and is connected to the front portion of the center float 9. The bracket 9 a having an L shape in front view and the front portion of the arm 79 are connected by a bolt 122. Thereby, the center float 9 and the arm 79 are supported around the support pin 77 so as to be swingable up and down.

As shown in FIGS. 14 and 15, a frame 49 is connected to a portion of the main frame 24 located above the center float 9 so as to extend rearward, and a height sensor 78 formed of a potentiometer is attached to the frame. 49 is attached. A rod 80 is connected across the detection arm 78 a of the height sensor 78 and the end of the arm 79, and a spring 81 that biases the detection arm 78 a of the height sensor 78 downward is attached. The front part of the float 9 is urged downward.
The side floats 10 and 11 are made of synthetic resin by blow molding, and a U-shaped metal support bracket 83 is connected to the rear portions of the side floats 10 and 11 in a front view.

  Like the fertilizer groover 17, the seed groat 12 in the direct seeding device 5 is provided with a grooving member 87 that is triangular in a side view and tapered in a plan view (wedge shape), and is U-shaped in a plan view. The seed-groove groover 12 formed in the above is connected to the rear part of the groove-cutting member 87, a rubber-made bellows cylindrical connecting member 85 is attached to the upper part of the seed-groove groover 12, and the hose 13 is connected. The member 85 is inserted.

As shown in FIGS. 6, 7, and 8, fertilizer covering soil members 88 are connected from the fertilizer groover 17 to the left and right sides of the center float 9 and the side float 10. A soil covering member 88 for fertilization is connected to the lateral width direction outer side of the side float 11.
The soil covering member 88 for fertilization is configured by bending a plate material, and extends right and left diagonally rearward from the center float 9 (side floats 10 and 11), and the tip of the soil covering member 88 is a fertilizer groover. 17 is located behind. Thereby, the soil covering member 88 for fertilization is in the state located on the opposite side to the seed groat 12 in the left-right direction from the rear of the fertilizer grooving device 17.

  The fertilizer is supplied to the groove from the fertilizer groover 17 while the fertilizer groover 17 forms the groove on the surface G as the machine progresses. Seeds are supplied. As the aircraft progresses, the soil covering member 88 pushes mud toward the groove formed on the field surface G by the fertilizer groover 17, and the seed fertilizer groove toward the groove formed on the field surface G by the fertilizer groover 17. The vessel 12 pushes the mud, and the fertilizer is buried in the field G by the mud pushed by the seed groat 12 and the soil covering member 88.

  On the rear side of the seed-growing groove device 12, there is provided a covering soil member 150 for direct sowing that fills a groove formed on the field surface G with the seed-growing groove device 12. This soil covering member 150 for direct sowing is configured by bending a plate material like the soil covering member 88 for fertilization, and pushes mud from both the left and right sides against the groove formed in the field surface G by the seed-growing groove device 12. It is configured as follows.

Next, the transmission structure to the direct sowing apparatus 5 (feeding part 7) and the fertilizer applying apparatus 20 (feeding part 15) will be described.
The power of the engine 50 mounted on the front part of the airframe is transmitted to the right and left rear wheels 2 via the transmission and transmission shaft 52 in the transmission case 51. On the other hand, the transmission power of the transmission case 51 is transmitted to the feeding unit 7 via the transmission shaft 55 and further transmitted to the feeding unit 15. The feeding unit 7 is driven to be in a state of supplying seed pods with the direct sowing device 5, and the feeding unit 15 is driven to be in a state of supplying fertilizer with the fertilizer application device 20.

  When the transmission structure is described, as shown in FIG. 4, the vertical frame 58 is connected to the left and right center portion of the main frame 24, and the boss portion 59 facing in the front-rear direction is connected across the vertical frames 43 and 58. An input shaft 60 is supported on the boss portion 59, and a transmission shaft 55 is connected to the input shaft 60 via a universal joint 61. A transmission case 62 is connected to the boss portion 59, and a transmission shaft 63 is supported on the transmission case 62. The input shaft 60 and the transmission shaft 63 are engaged with each other by a bevel gear.

  The reciprocating motion of the rod 70 due to the rotational motion of the transmission shaft 63 is converted into rotational motion by the one-way clutch 69, the drive shaft 65 is intermittently rotationally driven, and the seed of the hopper 6 is fed out from the feeding portion 7 by a predetermined amount. . The high-pressure wind from the blower 8 is supplied to the hose 13 through the duct 47, and the soot is supplied to the seed-groove groover 12 through the hose 13 by the high-pressure wind. Seeds are supplied to the formed grooves.

  As shown in FIG. 5, an arm 56a is fixed to the end of the transmission shaft 56, and a one-way clutch 69 is externally fitted to the drive shaft 65. The arm 56a of the transmission shaft 56 and the arm 69a of the one-way clutch are stretched over. A rod 70 is connected. Thereby, the reciprocating motion of the rod 70 due to the rotational motion of the transmission shaft 56 is converted into the rotational motion by the one-way clutch 69, the drive shaft 65 is intermittently rotated, and the feeding roll 64 of the feeding portion 15 is intermittently driven. Driven by rotation, the fertilizer in the hopper 14 is fed out from the feeding unit 15 by a predetermined amount. High-pressure wind from the blower 16 is supplied to the hoses 18 and 19 through the duct 32, and fertilizer is supplied to the fertilizer groover 17 through the hoses 18 and 19 by the high-pressure wind. Thus, fertilizer is supplied to the grooves formed in the field G.

Next, the leveling device 37 will be described.
As shown in FIGS. 4 and 8, the support case 91 is bolted to the bracket 24b fixed to the left end of the main frame 24, and the transmission case 92 is vertically moved around the horizontal axis P3 in the left-right direction. It is swingably supported. A bracket 24c is fixed to the right end portion of the main frame 24, and a support arm 93 is swingably supported around the horizontal axis P3 in the left-right direction with respect to the bracket 24c. The leveling rotor 98 is rotatably supported across the transmission case 92 and the support arm 93 to constitute the leveling device 37.

  As shown in FIG. 8, power from the input shaft 60 is transmitted to the lateral transmission shaft 96 in the transmission case 62, and the power is grounded through a transmission chain (not shown) provided in the transmission case 92. It is comprised so that it may be supplied to.

Next, the elevating structure of the leveling device 37 will be described.
As shown in FIGS. 4 and 16, a support plate 113 is connected to a portion of the main frame 24 adjacent to the left side of the link mechanism 3, and a fan-shaped lifting / lowering is performed around the horizontal axis P <b> 4 in the left-right direction of the support plate 113. A gear 114 is supported so as to be swingable up and down. The boss part 115 is fitted on the drive shaft 94 so as to be relatively rotatable, and the arm 115 a of the boss part 115 is connected to the elevating gear 114.

  As shown in FIG. 16, the gear mechanism 116 is connected to the support plate 113, the pinion gear 116 a of the gear mechanism 116 is engaged with the elevating gear 114, and the electric motor 117 that drives the gear mechanism 116 is connected to the gear mechanism 116. Has been. The leveling device 37 can be driven up and down around the horizontal axis P3 by driving the pinion gear 116a of the gear mechanism 116 by the electric motor 117 and swinging the lifting gear 114 up and down. A spring 119 that biases the leveling device 37 upward is connected across the arm 26a and the support frame 107 of the left vertical frame 26 and across the arm 39a and the support frame 107 of the right horizontal frame 39. The electric motor 117 assists the ascending drive of the leveling device 37.

  A potentiometer 118 for detecting the angle of the elevating gear 114 with respect to the support plate 113 is attached to the support plate 113, and the detection value of the potentiometer 118 is input to the control device 100, and the leveling for the direct seeding device 5 is determined by the detection value of the potentiometer 118. The height of the device 37 can be detected.

  A leveling depth setting unit 132 in FIG. 16 sets a leveling depth setting value that is a target position of the vertical position of the leveling rotor 98, and the control device 100 controls the direct seeding device 5 detected by the potentiometer 118. The electric motor 117 is controlled so that the height of the leveling device 37 becomes a height corresponding to the leveling depth setting value. Incidentally, when the leveling depth setting value is changed, the leveling rotor 98 is adjusted to the work position between the first work position A1 and the second work position A2 and to the retreat position A3.

Next, the structure for performing the automatic raising / lowering control of the direct seeding apparatus 5 will be described.
The detection value (H1) of the height sensor 78 (see FIG. 16) is input to the control device 100. The center float 9 follows the ground surface G with the progress of the airframe, and by detecting the height of the center float 9 with respect to the direct seeding device 5 from the detection value of the height sensor 78, the surface G (center float 9). To the direct seeding device 5 can be detected.

  As shown in FIG. 16, the hydraulic cylinder 4 is provided with a control valve 121 for supplying and discharging hydraulic oil, and the control valve 121 is operated by the control device 100. When the hydraulic oil is supplied to the hydraulic cylinder 4 by the control valve 121, the hydraulic cylinder 4 is contracted to raise the direct seeding device 5. When the hydraulic oil is discharged from the hydraulic cylinder 4 by the control valve 121, the hydraulic cylinder 4 Elongates and the direct seeding device 5 descends.

  Based on the height of the center float 9 with respect to the direct seeding device 5 (height from the surface G to the direct seeding device 5), the direct seeding device 5 is maintained at the set height from the surface G, that is, the height sensor 78 The control valve 121 is operated so that the detected value is maintained at the set value, the hydraulic cylinder 4 is expanded and contracted, and the direct seeding device 5 is automatically raised and lowered. Such a control operation by the control device 100 corresponds to automatic elevation control.

  In addition, a potentiometer 124 for detecting the elevation angle of the link mechanism 3 with respect to the traveling machine body is provided, and the detection value of the potentiometer 124 is input to the control device 100, and by detecting the angle of the link mechanism 3 with respect to the traveling machine body, The height of the direct seeding device 5 with respect to the traveling machine body can be detected.

  As shown in FIG. 15, four connection holes 79 a are formed in parallel (horizontal) along the arm 79, and four connection holes 9 b are formed obliquely along the bracket 9 a of the center float 9. (The rear connection hole 9b is positioned higher). Accordingly, when the center float 9 and the connecting holes 9 b and 79 a at the center of the arm 79 are used to connect the bracket 9 a and the arm 79 of the center float 9 by the bolt 122, the center float 9 is parallel to the arm 79. Connected with

  When the center float 9 and the connecting holes 9b and 79a on the front side of the arm 79 are used to connect the bracket 9a and the arm 79 of the center float 9 with the bolt 122, the center float 9 is connected to the arm 79 in a slightly raised position. Is done. As a result, the ground contact area of the center float 9 to the surface G is reduced, and the ground follow-up sensitivity to the surface G of the center float 9, that is, the sensitivity of the automatic lifting control becomes insensitive. This state is suitable for a state where the water on the surface G is relatively small and the mud on the surface G is relatively hard.

  When the connecting holes 9 b and 79 a on the rear side of the center float 9 and the arm 79 are used to connect the bracket 9 a and the arm 79 of the center float 9 with the bolt 122, the center float 9 is slightly lowered forward with respect to the arm 79. Connected. As a result, the ground contact area of the center float 9 to the surface G increases, and the ground tracking sensitivity of the center float 9 to the surface G, that is, the sensitivity of automatic elevation control becomes sensitive. This state is suitable for a state where the water on the surface G is relatively large and the mud on the surface G is relatively soft.

  As shown in FIGS. 1 and 16, a lifting lever 123 provided on the right side of the driver's seat 21 is configured to be operated and held in an automatic position, a raised position, a neutral position, a lowered position, and a working position. When the elevating lever 123 is operated to the ascending position, the automatic elevating control is stopped, and the first and second work clutches 53 and 54 are operated to be disconnected (the direct seeding device 5, the fertilizer application device 20, and the leveling device 37 are stopped). The right and left markers 22 are operated to the retracted posture, the hydraulic cylinder 4 is contracted, and the direct seeding device 5 is raised. If the angle sensor 124 detects that the direct seeding device 5 has reached the upper limit position with the lifting lever 123 being operated to the raised position, the hydraulic cylinder 4 automatically stops.

  When the elevating lever 123 is operated to the lowered position, the hydraulic cylinder 4 is extended and the direct seeding device 5 is lowered. When the center float 9 comes into contact with the rice field G, the control device 100 executes automatic elevation control so that the direct sowing device 5 comes into contact with the rice field G and stops, and the direct sowing device 5 is maintained at the set height from the rice field G.

  Then, when the elevating lever 123 is operated to the neutral position, the hydraulic cylinder 4 is stopped. By operating the elevating lever 123 to the raised position, the neutral position, and the lowered position in this way, the direct seeding device 5 is moved to an arbitrary height. Can be raised and lowered to stop.

  When the elevating lever 123 is operated to the work position, the right and left markers 22 are operated to the retracted position, the control device 100 executes automatic elevating control, and the first and second work clutches 53 and 54 are in the transmission state. To be operated. Incidentally, the power of the auxiliary transmission (not shown) of the transmission case 51 is transmitted to the feeding portion 7 via the first work clutch 53 and the transmission shaft 55, and the power of the auxiliary transmission of the transmission case 51 is 2 is transmitted to the feeding portion 15 via the work clutch 54, the transmission shaft 56 and the rod 70. An electric motor 57 for operating the first and second work clutches 53 and 54 to a transmission and disconnection state is provided.

  Thereby, motive power is transmitted to the direct sowing apparatus 5 (feeding part 7) and the fertilizer application apparatus 20 (feeding part 15), and seed potatoes and fertilizer are supplied to the groove | channel formed in the rice field G by the seed potatoes and the fertilizer groovers 12,17. Thus, power is transmitted to the leveling device 37, and the leveling member 98 is rotationally driven.

  As shown in FIG. 16, on the right side of the lower side of the steering handle 74, a cross of a neutral position N, an upward position U, a downward position D, a rear right marker position R, and a front left marker position L. The operation lever 125 is provided in a state that can be operated in the direction and is biased to the neutral position N.

  When the operating lever 125 is operated to the raised position U (operated to the raised position U and then returned to the neutral position N) with the lifting lever 123 operated to the automatic position, the first and second work clutches 53 and 54 are disconnected. When the hydraulic cylinder 4 is contracted and the direct seeding device 5 is raised, the right and left markers 22 are operated to the retracted posture. When the angle sensor 124 detects that the direct seeding device 5 has reached the upper limit position, the hydraulic cylinder 4 automatically stops.

  When the operation lever 125 is operated to the lowered position D (after being operated to the lowered position D and then returned to the neutral position N), the hydraulic cylinder 4 is extended and the direct seeding device 5 is lowered. When the center float 9 contacts the surface G, the automatic lifting control is activated.

  After operating the operating lever 125 to the lowered position D, if the operating lever 125 is again moved to the lowered position D, the first and second work clutches 53 and 54 are operated to the transmission state.

In a state where the height of the direct seeding device 5 detected by the angle sensor 124 is lower than a predetermined height set in advance, the following operation is performed.
In a state where the right (left) marker 22 is operated in the retracted position, if the operation lever 125 is operated to the right marker position R (left marker position L) for a first set time (relatively short time) or more, the right The (left) marker 22 is operated to the acting posture.
In a state where the right (left) marker 22 is operated to the action posture, the operation lever 125 is moved to the right marker position R (left marker position L) for a second set time (a time longer than the first set time) or more. When operated, the right (left) marker 22 is operated to the retracted posture.

  When the direct seeding device 5 is raised and the height of the direct seeding device 5 detected by the angle sensor 124 becomes higher than the predetermined height set in advance, the right and left markers 22 in the action posture are in the retracted posture. Operated. When the height of the direct seeding device 5 detected by the angle sensor 124 is higher than the predetermined height set in advance, the operation lever 125 is operated to the right and left marker positions R and L as described above. Regardless of this, the right and left markers 22 are maintained in the retracted posture.

  And this riding type direct sowing machine has a low position supply state in which the tip position of the seed soot supply path in each of the eight supply locations of the direct sowing apparatus 5 is allowed to enter the depth below the set depth from the field surface G at the same time; Is provided with a supply position adjusting mechanism KT that can be switched to a position that is shallower than the set depth or to a high position supply state that is located at a position near the upper side of the surface G. The supply position adjusting mechanism KT is configured to be able to finely adjust the vertical height of the tip position of the seed supply path in each of the plurality of supply locations in each of the low position supply state and the high position supply state.

Next, the supply position adjusting mechanism KT will be described.
As shown in FIGS. 9, 10, and 11, in a state of being rotatably supported by a bearing member 139 b fixed to the float support frames 48 on both the left and right end sides and the central portion, it extends over substantially the entire width of the body. A rotation support shaft 140 for the laterally extending groover is provided, and eight groover support arms 141 are integrally extended from the rotation support shaft 140 for the groover at a distance in the width direction of the machine body. A seed grooving device 12 is attached to the tip of each grooving device support arm 141.

  As shown in FIGS. 7, 8, and 9, in the vicinity of the rightmost float support frame 48, the operation arm for the groove forming device is directed rearward and downward in a state of being integrally fixed to the rotation shaft 140 for the groove forming device. 142 is extended, and a pin fixing plate 143 is screwed to the groover operation arm 142, and a locking pin 144 provided on the pin fixing plate 143 has a U-shaped cross section in the float support frame 48. It is configured so as to restrict the free rotation of the rotation support shaft 140 for the grooving device by being fitted into and engaged with one of a pair of upper and lower pin engaging holes 145A, 145B (longitudinal holes) formed in the connecting portion 48a. Has been.

  As shown in FIGS. 10 and 11, the pin fixing plate 143 is screwed to the groover operation arm 142 in a state where the locking pin 144 is inserted into the pin engaging hole 145A located on the upper side, so that The tip position of the groove device 12 (corresponding to the tip position of the seed supply route) is switched to a high position supply state (see FIG. 9B) in which the tip position is close to the surface of the rice field G or above the rice field G. By fixing the pin fixing plate 143 to the groove forming operation arm 142 with the stop pin 144 inserted through the pin engaging hole 145B located on the lower side, the tip position of the seed groove forming groove 12 is set from the surface G. It is configured to be switched to a low position supply state (see FIG. 9A) where the depth is entered.

  The grip portion 142b of the groover operation arm 142 extends rearward through the opening of the bending support portion 48aA of the connecting portion 48a. When the screw of the rear screw attachment hole 146 is removed, the groover operation arm 142 is supported at the upper end of the opening of the bending support portion 48aA.

  The pin fixing plate 143 is screwed and fixed to the groover operation arm 143 at two positions in the front and rear, and one screw mounting hole 146 in the groover operation arm 143 is formed in the front and rear. There is one screw mounting hole 147 on the front side of the pin fixing plate 143, but there are a plurality (specifically, five) of screw mounting holes 148 on the rear side of the pin fixing plate 143 in different positions in the vertical direction. 4 or less or 6 or more may be formed).

  The groover operation arm 142 is formed with a vertically oriented long hole 142 a that allows the locking pin 144 to move up and down relative to the groover operation arm 142.

As described above, since a plurality of screw mounting holes 148 on the rear side of the pin fixing plate 143 are formed, the pin fixing plate 143 is inserted in the pin engaging hole 145A located on the upper side. The pin fixing plate 143 is screwed to the groover operation arm 142 in a high position supply state where the screw is fixed to the groover operation arm 142 and the locking pin 144 is inserted into the pin engagement hole 145B located on the lower side. In each of the fixed low-position supply states, the grip portion 142b of the groover operation arm 142 is grasped with one hand, and the plurality of screw mounting holes 148 on the rear side of the pin fixing plate 143 are changed with the other hand. Thus, the relative vertical position of the pin fixing plate 143 and the groove-growing operation arm 142 changes, and the vertical height of the tip position of the eight seed-groove grooves 12 can be finely adjusted in five steps at the same time. Adjustment Rukoto is configured to allow.
In this way, by changing the pin fixing plate 143 and changing the attachment state with respect to the groover operation arm 142, it is possible to switch between the high position supply state and the low position supply state.

Next, the specific usage method corresponding to the kind of granular material is demonstrated.
When sowing using a Kalpa seed pod as a seed pod, the supply position adjusting mechanism KT is switched to the low position supply state as shown in FIG. As a result, the tip position of the seed vat supply path enters the state below the set depth from the surface G, so that it can be supplied to the surface G in a state in which the seeds are not eaten by birds or the like. .

  In the low position supply state, the supply position adjusting mechanism KT changes the position to any one of the five screw mounting holes 148 when screwing the rear side of the pin fixing plate 143, thereby providing eight pieces. It is possible to finely adjust the vertical height of the tip position of the seed grooving device 12 in five stages.

  When seeding using an iron-coated seed meal as a seed meal, the supply position adjusting mechanism KT is switched to the high position supply state as shown in FIG. As a result, the seed seed is supplied to the surface of the rice field G or a portion close thereto, so that the iron-coated seed rice can be supplied to the surface G in a state in which suffocation is avoided.

In this high position supply state, similarly to the low position supply state, when the rear side of the pin fixing plate 143 is screwed to the groover operation arm 142, it is inserted into one of the five screw mounting holes 148. By making the positions different, the vertical heights of the tip positions of the eight seed producing grooves 12 can be finely adjusted in five stages.
In this case, it is also possible to adjust the state of being slightly below the surface G. That is, the depth of penetration from the surface G can be adjusted in five stages. In this state, the tip positions of the eight seed-growing grooves 12 are positioned at a position shallower than the set depth from the field surface G or at a position near the upper side of the field surface G.

Further, a soil covering position adjusting mechanism FT is provided which can change and adjust the height of action of the soil covering member 150 for direct sowing with respect to the field surface G.
As shown in FIGS. 12 and 13, the soil covering position adjusting mechanism FT is provided on the lower side of the rotation supporting shaft 140 for the groove forming device and on both the left and right ends and the central portion, similarly to the rotation supporting shaft 140 for the groove forming device. A rotating support shaft 151 for a horizontal covering member extending over substantially the entire width of the machine body is provided in a state of being rotatably supported by a bearing member 139b fixed to each of the float support frames 48, and for this covering member The soil covering members 150 for direct sowing are attached to the tip portions of the eight soil covering member support arms 152 that are integrally extended from the rotating support shaft 151.

  In the vicinity of the second float support frame 48 from the right, an operation arm 153 for the covering member is extended toward the rear in a state of being integrally fixed to the rotating support shaft 151 for the covering member. An L-shaped swing arm 156 is linked and linked to the operation arm 153 by engagement of the elongated hole 154 and the linkage pin 155. The swing arm 156 is rotatably supported by a fulcrum bracket 157 by a fulcrum pin 157a, and one end of an inner wire 158a of a manually operated operation wire 158 is connected to the other end of the swing arm 156. ing. The other end of the inner wire 158 a of the operation wire 158 is linked to a manually operated cover depth adjusting lever 159 provided on the front side of the body of the direct seeding device 5.

  Also, the operating wire 158 is pulled by the swing arm 156 by the coil spring 162 stretched between the engaging portion 161 and the connecting pin 155 formed on the outer wire receiver 160 that receives one end of the outer wire 158b of the operating wire 158. It is configured to be pulled and biased in the operating direction, that is, in the direction of moving and biasing the direct covering soil covering member 150 upward. On the other hand, by locking the soil covering depth adjusting lever 159 at any one of the plurality of adjusting locking positions of the adjusting locking member 163, the position can be held against the biasing force of the coil spring 162. By adjusting the position of the soil covering depth adjusting lever 159, the position of the direct soil covering member 150 can be changed and adjusted in a plurality of stages and can be held at the adjusted position. . That is, the depth of penetration from the surface G can be adjusted to 7 levels.

  The fulcrum bracket 157 that rotatably supports the swing arm 156 is attached to the frame 164 of an angle member that is erected and connected across the groove forming operation arms 142 on both the left and right sides, and the outer wire holder 160. Is also attached to the operation arm 142 for the groove making device, and when the height of the seed groove making groove device 12 is changed, the position of the fulcrum bracket 157 and the outer wire holder 160 is also changed accordingly. ing.

[Another embodiment]
(1) In the above embodiment, the direct seeding device 5 is provided as the powder and granular material supply device, the fertilizer device 20 is provided as the separate powder and granular material supply device, and the tip position of the fertilizer supply path in the fertilizer application device 20, that is, the fertilizer groove The lower end position of the device 17 is fixed at a position that is a constant depth with respect to the rice field G, and the tip position of the seed soot supply path in the direct seeding device 5 is switchable between the low position supply state and the high position supply state. Instead of such a configuration, the tip position of the fertilizer supply path in the fertilizer application device 20 may be switched between a low position supply state and a high position supply state.

(2) In the above-described embodiment, the supply position adjusting mechanism KT is configured to always adjust the vertical height of the tip position of the granular material supply path to the same position in the low position supply state and the high position supply state. May be.

(3) In the above-described embodiment, the fertilizer is supplied to the rice field G as a different kind of granular material, and the seed meal is supplied to the rice field G as a granular material. However, the seed meal is supplied to the rice field G as a different kind of granular material. Further, fertilizer may be supplied to the rice field G as a granular material, or a chemical may be supplied instead of the fertilizer.

(4) In the above embodiment, the supply position adjusting mechanism KT replaces the pin fixing plate 143 with respect to the operation arm 142, so that the tip position of the seed grooving groove 12 is changed between the low position supply state and the high position supply state. However, instead of such a configuration, the tip position of the granular material supply path is supplied to the low position by the operation of the actuator based on the command of the operation tool (not shown) provided in the control unit. It may be configured to be switchable between a state and a high position supply state.

  In addition, in each of the low position supply state and the high position supply state, the vertical height of the tip position of the granular material supply path in each of the plurality of supply locations can be finely adjusted by operating the actuator. It is good.

  Thus, when configured to change the vertical height by the actuator, the correlation between the setting value of the control sensitivity in the automatic elevation control and the fine adjustment position of the tip position of the granular material supply path is determined in advance, You may make it set the fine adjustment position of the front-end | tip position of a granular material supply path | route according to the setting value of control sensitivity.

  For those equipped with field condition detection means for detecting the condition of the surface of the field, such as the unevenness of the surface of the field and the mud soil hardness, fine adjustment of the tip position of the appropriate powder supply path based on the detection information You may make it alert | report a position.

(5) In the above embodiment, as a configuration for changing the vertical height of the tip position of the granular material supply path by changing the position of the seed soaking groover 12, for example, the state using the groover 12; A configuration in which the vertical height of the tip position of the powder supply path is changed by switching to a state in which the powder is supplied directly from the powder supply hose 13 to the surface G without using the groove generator 12; For example, various supply forms can be used.

(6) In the above-described embodiment, the soil cover position adjusting mechanism FT that can change and adjust the action height of the soil covering member 150 with respect to the field surface G in the direct seeding device 5 is provided. However, such a soil covering position adjusting mechanism FT is not provided. It is good also as a structure.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a paddy field machine for supplying powders such as fertilizers, chemicals, and seed meals to a rice field.

5 Powder supply device 12, 17 Grower 20 Different powder supply device 88, 150 Soil covering member KT Supply position adjusting mechanism FT Soil covering position adjusting mechanism G

Claims (5)

A paddy field work machine provided with a granular material supply device for supplying granular material to the rice field at a plurality of supply locations arranged in the horizontal direction of the horizontal body along with traveling of the traveling machine body,
The tip position of the powder supply path in each of the plurality of supply locations of the powder supply apparatus, at the same time, a low position supply state that allows the set point to enter the depth below the surface, and the tip of the powder supply path A paddy field work machine provided with a supply position adjustment mechanism that can be switched to a high position supply state in which the position is located at a position shallower than the set depth from the rice field or a position near the upper surface of the rice field.   The supply position adjusting mechanism is configured to be able to finely adjust the vertical height of the tip position of the granular material supply path in each of a plurality of supply locations in each of the low position supply state and the high position supply state. The paddy field machine according to claim 1. It is provided with a supply device for different types of granular materials that supplies different types of different types of granular materials to the rice field,
Each of the powder supply device and the separate powder supply device enters a rice field at the tip position of the powder supply path and forms a groove for supplying powder on the surface, and the groove A soil covering member that backfills the grooves formed on the rice field with a vessel,
The grooving device of the supply device for the different types of granular materials is provided in a state in which the position is shifted in front of the machine body than the grooving device of the granular material supply device,
The soil covering member corresponding to the grooving device of the supply device for different types of granular materials is provided in a state of being located at the rear side of the grooving device in the longitudinal direction of the machine body and at one side in the lateral direction of the machine body. And
In the state where the groove producing device of the powder and granular material supply device is located at the rear side in the front-and-rear direction of the machine of the groove producing device and the other side portion in the horizontal direction of the machine body. The paddy field work machine according to claim 1 or 2 provided.   The separate powder supply device supplies fertilizer or medicine to the surface as the separate powder, and the powder supply device supplies seed rice to the surface as the powder. The paddy field machine according to claim 3.   The paddy field work machine of Claim 3 or 4 provided with the soil covering position adjustment mechanism which can change and adjust the action height with respect to the field surface of the said soil covering member in the said granular material supply apparatus.

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