JP7072593B2 - Paddy field work machine - Google Patents

Description

The present invention relates to a paddy field working machine provided with a main working device for sowing or seedling planting, a fertilizer application device, and a drug application device that are operated during forward traveling for work.

As the above-mentioned paddy field work machine, for example, a fertilizer hopper (fertilizer storage part) and a feeding unit (fertilizer feeding part) of the fertilizer application device are equipped at the rear part of the traveling machine (running vehicle body), and the sowing device (main work). A device), a plurality of fertilizer grooving devices, a drug spraying device (drug application device), etc. are connected to the rear part of the traveling machine so as to be able to move up and down via a vertical swing type link mechanism, and a feeding unit at the rear part of the machine body. There is one in which a plurality of fertilizer application hoses are erected from each to the rear of the machine body (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-201919

In the above configuration, by providing the drug spraying device for spraying the drug over the entire working width of the paddy field working machine, it is difficult to obtain the medicinal effect in spite of the large amount of the drug applied. Therefore, in recent years, in order to effectively obtain medicinal effects such as disease control and insect repellent on seeds or seedlings while reducing the amount of drug applied, near the planned sowing site or seedling planting site on the mud surface of the field. It is considered to adopt a groove-growing type drug-growing device that creates a groove with a groove-growing device for drug-growing and supplies the drug into the groove.

However, when the seeds are sown or planted near the planned seeding site or seedling planting site on the mud surface of the field, if the seeds are sown or planted with insufficient backfilling of the dispensing groove, the seeds will be buried. It is easy to cause a decrease in the emergence rate and seedling standing rate, or the seedlings to collapse due to poor planting.

In particular, when a direct sowing device is used as the main working device and seeds that have been iron-coated to prevent bird damage are used as seeds, the seeds are sown in a state where the backfilling of the medicine groove is insufficient. When the seeds were buried, the germination rate and the seedling standing rate were significantly reduced.

An object of the present invention is to effectively obtain a medicinal effect on seeds or seedlings while reducing the amount of drug applied, and to reduce the emergence rate and seedling standing rate due to burying seeds, or to cause seedling collapse due to poor planting. Is to prevent.

The paddy field working machine of the present invention includes a main working device for sowing or seedling planting and a medicine application device that are operated during forward traveling for work, and the main working device is a plurality of main working devices for supplying seeds or seedlings to a field. The supply units are aligned and deployed in the left-right direction at regular intervals, and the drug application device places a plurality of drug supply units at the same position in the width direction of the machine as the corresponding main supply unit and the corresponding main unit. A plurality of soil covering members for treatment, which are arranged in front of the supply unit in the front-rear direction of the machine and backfill each of the application grooves formed by the plurality of drug supply units, are arranged at the rear position of the drug supply unit, and the application is performed. The medicated soil covering member is configured to backfill the medicine groove between the medicine supply part and the main supply part.

In the present invention, the fertilizer application device is provided, and the fertilizer application device deploys a plurality of fertilizer supply units for supplying fertilizer to a field at positions spaced apart from the corresponding main supply unit in the width direction of the machine body. Each of the fertilizer supply parts of the above is constructed in a groove type in which a groove is made on the mud surface of the field by a groove making device for fertilizer to supply fertilizer into the groove, and the fertilizer groove formed by the plurality of fertilizer supply parts is formed. A plurality of fertilizer covering members for backfilling each are provided, and the plurality of applying soil covering members are used as a backfilling groove from a first fixing portion provided on the opposite side of the fertilizing groove adjacent to the applying groove to be backfilled. The plurality of fertilizer-applying soil covering members extend diagonally backward toward the fertilizer, and the plurality of fertilizer-applying soil covering members are backfilled from a second fixing portion provided on the opposite side of the fertilizer groove adjacent to the fertilizer groove to be backfilled. It is preferable to extend it in an inclined posture facing diagonally backward.

In the present invention, a leveling float for leveling the mud surface of the field is provided so as to be able to swing up and down, and each of the plurality of fertilizer supply units is grooved in the mud surface of the field by a groove-growing device for fertilizer application. It is preferable that the ground leveling float is equipped with a groove-making type in which fertilizer is supplied to the ground leveling float so as to overlap the rocking fulcrum of the leveling float when viewed from the side.

In the present invention, it is preferable that a ground leveling float for leveling the mud surface of the field is provided, and each of the plurality of drug supply units is provided on the front end side portion of the ground leveling float where the bottom surface is in a warped state. be.

In the present invention, a leveling float for leveling the mud surface of a field is provided so as to be able to swing up and down, and each of the plurality of drug supply units is arranged on the ground leveling float so as to overlap the swinging fulcrum of the leveling float in a side view. It is preferable to equip it.

In the present invention, each of the plurality of fertilizer supply units is configured as a groove-growing type in which a groove is created on the mud surface of the field by a groove-growing device for fertilizer and the fertilizer is supplied into the groove. Each of the vessels is provided with a groove-growing assisting tool that extends forward from the front end thereof to assist the groove-growing by the fertilizer-growing device, and each of the plurality of drug supply units is provided with a groove-growing device for drug application. It is preferable that the rear end portion is arranged at a position where the rear end portion overlaps with the front end portion of the groove assisting tool in a side view.

In the present invention, each of the grooving devices is elastically deformed in the groove width direction so as to groov a narrow groove width when the grooving load is large and to groov a wide groove width when the grooving load is small. It is preferable that the configuration is possible.

In the present invention, each of the groove-growing devices includes a first member that cannot be elastically deformed and a second member that can be elastically deformed in the groove width direction, and the first member is arranged inside the second member. Therefore, it is preferable to limit the elastic deformation of the second member in the direction of narrowing the groove width by contact with the first member.

In the present invention, a ground leveling float for leveling the mud surface of the field is provided, and the plurality of fertilizer supply units are grooved on the mud surface of the field by a fertilizer groover to supply fertilizer into the groove. The ground leveling float is equipped with a groove-growing device for drug application and a groove-growing device for fertilizer application, and the ground-leveling float is the groove-growing device for drug application and the groove-growing device for fertilizer application. It is preferable that the space is provided with a ground leveling portion between the groovers formed so that the rear end is located behind the groover for fertilizer application.

It is a left side view of a passenger direct seeding machine. It is a top view of a passenger direct seeding machine. It is a left side view of a work unit. It is a vertical sectional left side view of a work unit. It is a rear view of a work unit. It is a vertical sectional rear view of a work unit which shows the structure of a fertilizer application device. It is a vertical sectional rear view of a work unit which shows the structure of a medicine application apparatus. It is a cross-sectional plan view of the work unit which shows the arrangement of the seed supply part, the fertilizer supply part, and the medicine supply part. It is a vertical sectional side view of the main part which shows the arrangement of a fertilizer supply part and a drug supply part. It is a vertical sectional side view of a main part which shows the support structure of the right-and-left leveling float. It is an exploded perspective view of the main part which shows the support structure of the right-and-left leveling float. It is a schematic diagram which shows the transmission structure of a work unit. It is a vertical sectional side view of a main part which shows the interlocking structure of a direct seeding apparatus and a medicine application apparatus. It is a cross-sectional plan view of a main part which shows the interlocking structure of a direct seeding apparatus and a medicine application apparatus. It is a vertical sectional side view of the main part which shows the structure of the fertilizer supply part and the medicine supply part in another embodiment. It is a cross-sectional plan view of the main part which shows the structure of the fertilizer supply part and the medicine supply part in another embodiment. It is a cross-sectional plan view of the main part which shows the shape of the ground leveling float in another embodiment.

Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the present invention is applied to a passenger direct seeding machine, which is an example of a paddy field working machine, will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the passenger direct seeding machine exemplified in the present embodiment is an elevating cylinder 2 in which a single-acting hydraulic cylinder is adopted at the rear of a traveling vehicle body 1 configured in a passenger-type four-wheel drive type. The work unit A for sowing is connected and configured so as to be able to move up and down via a vertical swing type link mechanism 3 that swings up and down by the operation of.

The traveling vehicle body 1 has a hydrostatic continuously variable transmission (not shown) equipped as a main transmission with power from an engine 4 mounted on the front portion thereof with anti-vibration, and a gear type transmission provided as an auxiliary transmission. It is configured to transmit to the left and right front wheels 5 deployed in the front portion thereof and the left and right rear wheels 6 deployed in the rear portion via a device (not shown) or the like. A boarding step 7, a steering wheel 8 for steering the front wheels, a driver's seat 9 whose position can be adjusted in the front-rear direction, and the like are provided on the rear side of the traveling vehicle body 1 to form a boarding driving unit 10. Left and right expansion steps 11 for expanding the boarding area to the left and right are provided on the left and right sides of the traveling vehicle body 1. Behind the boarding operation unit 10, a rear step 12 extending from the rear of the traveling vehicle body 1 toward the work unit A above the link mechanism 3 and the left and right rear wheels 6, and movement with respect to the rear step 12 and the like are performed. The handrail 13 used at the time is deployed.

As shown in FIGS. 1 to 5, in the work unit A, a direct sowing device 15 for 6 rows as a main work device for sowing and fertilizer are attached to a sowing frame 14 which is rotatably connected to the rear end of the link mechanism 3. 6-row fertilizer application device 16 to supply the field, 6-row fertilizer application device 17 to supply the drug to the field, transmission device 18 to transmit to each device 15 to 17, and the field mud surface to be worked when traveling forward for work. It is unitized with three T-shaped ground leveling floats 19 in a plan view for leveling the ground, and left and right groove cutting tools 20 for forming drainage grooves in the field when traveling forward for work.

That is, by unitizing the direct seeding device 15, the fertilizer application device 16, and the drug application device 17, each of the devices 15 to 17 is compared with the case where the devices 15 to 17 are individually assembled to the traveling vehicle body 1. Assembling to the traveling vehicle body 1 can be facilitated.

As shown in FIGS. 3 to 7, the seeding frame 14 includes a main frame 21 connected to the rear end portion of the link mechanism 3, a front support frame 22 erected tall on the front side of the main frame 21, and a main frame. A rear support frame 23, etc., which is erected low on the rear side of the frame 21, is provided.

As shown in FIGS. 1 to 5 and 8, the direct sowing device 15 stores left and right seeds for storing three rows of seeds as a main storage unit for storing seeds coated with iron, which is an example of seeds. Section 24, six seed feeding sections 25 as a main feeding section for intermittently feeding a predetermined amount of seeds downward from the corresponding seed storage section 24, and seeds fed downward by the corresponding seed feeding section 25. It is equipped with six seed supply units 26 as a main supply unit that drops and supplies toward the muddy surface of the field after leveling, which is located directly below the feeding unit 25. Then, the various child feeding portions 25 are operated by the work power transmitted from the traveling vehicle body 1 transmitted via the external transmission shaft 27, the transmission device 18, and the like, so that a predetermined amount of seed paddy is used as one stock in the front-rear direction. It is configured as a mud surface spot sowing method for 6 rows, in which a maximum of 6 rows are sown on the mud surface of the field with a predetermined interval.

In the direct sowing device 15, the left and right seed storage portions 24 have three seed discharge ports (not shown) aligned at the lower ends thereof at regular intervals in the left-right direction. Then, the seed feeding portion 25 is connected to each of the seed discharge port forming portions in the various child storage portions 24. Each seed feeding unit 25 is connected to a seed supply unit 26 at each of the lower end portions on the seed discharge side. Then, the left and right seed storage units 24 are arranged at predetermined intervals in the left-right direction so that the various child supply units 26 are aligned and deployed together with the corresponding seed feeding unit 25 and the seed discharge port at regular intervals in the left-right direction. It is deployed open.

As shown in FIGS. 1 to 8, the fertilizer application device 16 intermittently supplies a predetermined amount of fertilizer from the left and right fertilizer storage units 28 and the corresponding fertilizer storage units 28, which store three rows of granular fertilizer, which is an example of fertilizer. 6 fertilizer feeding parts 29, 6 fertilizer hose 30 as fertilizer guide pipes for guiding the fertilizer delivered by the corresponding fertilizer feeding part 29, and fertilizer guided by the corresponding fertilizer hose 30 are supplied to the field. It is equipped with six fertilizer supply units 31 and the like. Then, each fertilizer feeding unit 29 is operated by the work power transmitted from the traveling vehicle body 1 transmitted via the external transmission shaft 27, the transmission device 18, and the like, so that a predetermined amount of fertilizer is separated in the front-rear direction at predetermined intervals. It is configured for 6 rows, where fertilizer is applied for up to 6 rows in the state of being fertilized.

The left and right fertilizer storage portions 28 have three fertilizer discharge ports (not shown) aligned at the lower ends thereof at regular intervals in the left-right direction. Then, a fertilizer delivery unit 29 is connected to each of the fertilizer discharge port forming points in each fertilizer storage unit 28. Each fertilizer feeding section 29 is configured to be arranged at a predetermined interval in the left-right direction in a state of being connected to the corresponding fertilizer storage section 28.

Each fertilizer supply unit 31 is configured as a groove making type in which a groove is made on the mud surface of the field after leveling by a groove making device 32 for fertilizing formed in a U-shape in a plan view that opens the rear, and fertilizer is supplied into the groove. are doing. Then, the front end side portion of the corresponding ground leveling float 19 is located at a position on the front side of the machine body from the corresponding seed supply part 26 and at a position at a predetermined distance in the width direction of the machine body from the corresponding seed supply part 26. It is fixedly equipped in the part near the center of the left and right in the left and right overhanging areas in preparation for.

The drug application device 17 intermittently supplies a predetermined amount of a drug from three drug storage units 33 that store two doses of a drug such as a powdered herbicide or a disease-preventing agent, which is an example of a drug, and a corresponding drug storage unit 33. Supply to the field the six drug feeding sections 34, the six dispensing hoses 35 as the drug guide tubes for guiding the delivered drug by the corresponding drug feeding section 34, and the drugs guided by the corresponding dispensing hose 35. It is equipped with six drug supply units 36, and the like. Then, each drug feeding unit 34 is operated by the work power transmitted from the traveling vehicle body 1 transmitted via the external transmission shaft 27, the transmission device 18, and the like, so that a predetermined amount of the drug is spaced in the front-rear direction at a predetermined interval. It is configured for 6 articles, which administer up to 6 articles in the state of being in a state of being.

Each drug storage unit 33 has two drug discharge ports (not shown) aligned at the lower ends thereof at predetermined intervals in the left-right direction. Then, the drug delivery section 34 is connected to each of the drug discharge port forming locations in each drug storage section 33. Each drug feeding section 34 is configured to be arranged at a predetermined interval in the left-right direction in a state of being connected to the corresponding drug storage section 33.

Each drug supply unit 36 is configured as a groove-making type in which a groove is made on the mud surface of the field after leveling by a groove-growing device 37 for medicine formed in a U-shape in a plan view that opens the rear, and the drug is supplied into the groove. are doing. Then, the above-mentioned left and right overhangs of the corresponding ground leveling float 19 are located at the position in front of the machine body with respect to the corresponding fertilizer supply part 31 and at the same position in the width direction of the machine body with the corresponding seed supply part 26. It is fixedly equipped on the left and right parts of the area near the outer edges.

From the above configuration, at the time of forward traveling for work in which the work unit A is operated, first, each leveling float 19 prepares the mud surface of the field to be worked along with the traveling.
Next, each drug supply unit 36 of the drug application device 17 precedes each child supply unit 26 of the direct sowing device 15 and each fertilizer supply unit 31 of the fertilizer application device 16, and the field mud surface after leveling by each leveling float 19. A medicine groove is formed at the same position in the width direction of the machine with respect to the planned seeding location of the various child supply parts 26 in the above, and the medicine delivered by each medicine delivery unit 34 of the medicine apparatus 17 is supplied to the inside of the medicine groove.
Further, in a state where each fertilizer supply unit 31 of the fertilizer application device 16 precedes the various child supply units 26 of the direct sowing device 15, from the planned seeding location of the various child supply units 26 on the muddy surface of the field after the land preparation by each leveling float 19. Fertilizer application grooves are formed at positions spaced apart from each other in the lateral width direction of the machine body, and the fertilizer delivered by each fertilizer delivery unit 29 of the fertilizer application device 16 is supplied to the inside of the fertilizer application grooves.
After that, the various child supply units 26 of the direct seeding device 15 supply each drug on the mud surface of the field after the drug application by each drug supply unit 36 of the drug application device 17 and after the fertilizer application by each fertilizer supply unit 31 of the fertilizer application device 16. The seed paddy fed by the various child feeding parts 25 of the direct seeding device 15 is dropped and supplied to the same position in the width direction of the machine body with respect to the application point of the part 36.

Then, in this work unit A, each drug supply unit 36 supplies various child supply units 26 of the direct seeding device 15, each fertilizer supply unit 31 of the fertilizer application device 16, and each drug supply unit 36 of the drug application device 17. By arranging it so that each fertilizer supply unit 31 is located between them in an arrangement located on the front side of the aircraft from the unit 26, the various child supply units 26 and each drug supply unit 36 are separated from each other in the front-rear direction of the aircraft. The distance can be increased. As a result, during forward traveling for work, the time difference between the time when each of the preceding groove-making type drug supply units 36 forms the drug application groove and the time when the subsequent various child supply units 26 are seeded at the application groove formation location. It becomes easy to secure the time required for backfilling the medicine groove between the time when each medicine supply part 36 is made and the time when various child supply parts 26 are seeded.

That is, in order to facilitate the medicinal effect of the seed paddy, the mud surface seeding type various child supply units 26 and the groove-growing type chemical supply units 36 are arranged at the same positions in the horizontal direction of the machine, and the horizontal direction of the machine is wide. Even if the seeding position and the dispensing position are set to be the same, the dispensing groove formed by each drug supply section 36 of the dispensing device 17 for seeding is seeded by the various child supply sections 26 of the subsequent direct seeding device 15. In between, it can be backfilled by the mud that flows into the medicine groove after passing through each drug supply unit 36, and can be sown on the mud surface of the backfilled medicine groove forming portion.

As a result, it is possible to prevent the seed paddy coated with iron from being buried due to the seeding being carried out in a state where the backfilling of each medicine groove is insufficient, and the seedlings caused by this burying can be prevented. It is possible to prevent a decrease in the rate.

In addition, it is possible to prevent the drug supplied to each drug groove from spreading over a wide area and weakening the drug effect due to insufficient backfilling of each drug groove.

Further, in this work unit A, the groove-making type fertilizer supply unit 31 and the groove-making type chemical supply unit 36 are arranged so as to be displaced in the front-rear direction of the machine body, so that they are arranged side by side and close to each other. It is possible to prevent mud clogging between the groove-growing device 32 for fertilizer application and the groove-growing device 37 for drug application, which occurs when the fertilizer is deployed.

As shown in FIGS. 3, 4 and 8, each of the grooving devices 32 for fertilization and the grooving devices 37 for drug application extend forward from their front ends, and the grooving devices 32 and 37. The groove assisting tools 38 and 39 that assist the groove making by the above are connected and equipped. Each of the groove assisting tools 38 and 39 is formed so as to have a bottom surface that is in a state of being warped toward the front end side. As a result, the groove making by the groove making devices 32 and 37 can be smoothly performed with less resistance.

As shown in FIGS. 3 to 5 and 9 to 11, in each of the leveling floats 19, the front end side portion having the above-mentioned left and right overhanging regions is the front end side in order to improve the leveling performance against the unevenness of the field mud surface. It is formed so that it has a slightly warped shape. Further, the metal brackets 68 provided in the front and rear intermediate portions thereof are supported in the left-right direction on the three float support members 40 which are distributed and arranged at regular intervals in the left-right direction at the lower part of the main frame 21 in the seeding frame 14. By connecting via the shaft 41, the seeding frame 14 is equipped so as to be swingable up and down. Then, the corresponding fertilizer supply units 31 are supported in an arrangement that overlaps with the left-right fulcrum 41, which is the swinging fulcrum of the leveling float 19 in the side view. Further, the corresponding drug supply unit 36 is supported at the front end side portion in which the bottom surface thereof is in a warped state.

As a result, each leveling float 19 can also be used as a support member for supporting each fertilizer supply unit 31 and each drug supply unit 36, and the configuration can be simplified by reducing the number of parts. Then, while each leveling float 19 is also used as a support member in this way, the fertilization depth by the fertilizer application device 16 can be made constant with high accuracy regardless of the vertical swing of each leveling float 19. Further, while effectively utilizing the front-rear length of each leveling float 19, it is possible to increase the separation distance between each fertilizer supply unit 31 and each drug supply unit 36 in the front-rear direction of the machine body, and along with this, various children. The separation distance between the feeding unit 26 and each drug supply unit 36 in the front-rear direction of the machine body can also be increased. As a result, it becomes easier to secure the time required for backfilling the medicine groove between the time when each medicine supply unit 36 is made and the time when various child supply parts 26 are seeded.

As shown in FIGS. 3, 4, 8 and 9, each drug supply unit 36 has a groover 37 for drug application provided therein, and a groover 32 for fertilization located behind them. It is installed at a position where it overlaps with the front end of the groove assisting tool 38 in preparation for the above.

As a result, of the field mud extruded in the left-right direction along with the groove of each drug supply unit 36 performed during forward traveling for work, the field mud extruded to the fertilizer supply unit side is used for subsequent fertilizer application. The groove assisting tool 38 can guide the guided field mud to the rear side of the machine, and the guided field mud is pushed out to the side of the application groove among the field mud extruded in the left-right direction along with the groove of each fertilizer supply unit 31. It can be flowed toward each application groove together with mud and the like. As a result, the backfilling of each dispensing groove can be performed more quickly, and it is possible to more effectively prevent seeding from being carried out in a state where the backfilling of each dispensing groove is insufficient.

As shown in FIGS. 3 to 5 and 8, each leveling float 19 has left and right surface-leveling soil covering members 42 for backfilling and leveling each of the application grooves formed by the left and right drug supply units 36 provided therein. It is provided so as to be located between the drug supply unit 36 and the seed supply unit 26 that are lined up in front and behind. Further, the left and right fertilizer covering members 43 for backfilling and leveling each of the fertilizer application grooves formed by the left and right fertilizer supply units 31 provided therein are provided.

The soil covering members 42 for each application are backfilled from the outer end portions 19A of the left and right overhanging regions in each leveling float 19 which is a first fixing portion provided on the opposite side of the fertilizer groove adjacent to each of the application grooves to be backfilled. It extends diagonally backward toward the dispensing groove so that the extending end side reaches the dispensing groove to be backfilled.

As a result, of the field mud extruded in the left-right direction along with the groove of each drug supply unit 36 performed during forward traveling for work, the field mud extruded to the lateral outside of each leveling float 19 and the like are subsequently pushed out. The soil covering member 42 for application can guide the user to each application groove. As a result, when the mud in the field is hard and difficult to flow into the dispensing ditch, or when the working speed is high and the preceding drug supply section 36 creates a ditch and the subsequent various child supply sections 26 sow the drug. Even when it becomes difficult to secure the time required for backfilling the grooves, it is possible to quickly and surely backfill each drug groove, and seeding is performed in a state where the backfill of each drug groove is insufficient. This can be prevented more reliably.

Each fertilizer covering member 43 is provided from the rear portion 19B of each leveling float 19 which is a second fixing portion provided on the opposite side of the fertilizer groove adjacent to each fertilizer groove to be backfilled toward the fertilizer groove to be backfilled. It extends in a slanted backward posture so that the extending end side of the sill reaches the medicine groove to be backfilled.

As a result, of the field mud extruded in the left-right direction along with the groove of each fertilizer supply unit 31 performed during forward traveling for work, the field mud extruded to the left-right center side of each leveling float 19 and the like are succeeded. Each fertilizer covering member 43 can guide the fertilizer to each fertilizer groove. As a result, even when the mud in the field is hard and difficult to flow into the fertilizer groove, the backfilling of each fertilizer groove can be performed promptly and surely, and the backfilling of each fertilizer groove becomes insufficient. Therefore, it is possible to prevent the fertilizer supplied to each fertilizer groove from spreading over a wide area and weakening the fertilizer effect.

As shown in FIGS. 9 to 11, the work unit A has a groove cutting tool 20 arranged at the rear rear side of the machine body with respect to the left-right facing support shaft 41 in the left and right leveling floats 19 arranged on the left and right end sides thereof. .. On the other hand, in the seeding frame 14, the left and right float support members 40 that support the left and right leveling floats 19 provided with the groove cutting tool 20 are on their front sides, and the front portion of the bracket 68 provided on the corresponding leveling float 19. It is provided with an ascending limiting unit 40A that restricts ascending and swinging from the basic posture of the corresponding leveling float 19 by contact with the side. Further, the main frame 21 has a rear end of the left and right float support portions 21A that support the left and right leveling floats 19 via the left and right float support members 40, and a rear side of the bracket 68 provided for the corresponding leveling float 19. The descent blocking portion 21B for preventing the descent swing from the basic posture of the corresponding leveling float 19 by contact is provided.

That is, by providing the left and right float support members 40 with the ascending limiting portion 40A, it is possible to prevent the occurrence of ground leveling failure due to the large ascent and swing of the left and right leveling floats 19. Further, since the left and right float support portions 21A in the main frame 21 are provided with the descent prevention portions 21B, the drainage groove is formed due to the ditch cutting tool 20 rising with the descent swing of the left and right leveling floats 19. It is possible to prevent defects.

As shown in FIGS. 1 to 5, the work unit A has left and right fertilizer storage units 28 for storing fertilizers that consume the most per unit area on the front side thereof, and the rear side thereof per unit area. The left and right seed storage units 24 that store the seed paddy that consumes the second largest amount of fertilizer are deployed, and the consumption per unit area is the highest in the space between the left and right seed storage units 24 and the left and right fertilizer storage units 28. Three drug storage units 33 having a narrow front-rear width for storing a small amount of drug are provided.

That is, by arranging each fertilizer storage unit 28 that stores the fertilizer that consumes the most per unit area on the front side of the work unit A that is the traveling vehicle body side, the fertilizer is replenished to each fertilizer storage unit 28. , It can be easily performed from the traveling vehicle body 1 without getting off the traveling vehicle body 1.
Further, by arranging various child storage units 24 for storing seed paddy, which consumes the second largest amount per unit area after fertilizer, on the rear side of the work unit A, which is the rear end side of the passenger direct seeding machine, various child storage units are used. The seed paddy can be easily replenished to 24 from the rear of the machine.

As described above, each fertilizer storage unit 28 is arranged on the front side of the machine body on the front side of each drug storage unit 33, whereas as described above, each fertilizer supply unit 31 is located on the rear side of the machine body on the rear side of each drug supply unit 36. By deploying, each fertilizer application hose 30 and each application hose 35 over the corresponding ones intersect each other in a side view.

As shown in FIGS. 3 to 7, the various child storage portions 24 include a seed hopper 24A having a seed supply port at the upper end and a lid 24B for the seed hopper that opens and closes the seed supply port. Each fertilizer storage unit 28 includes a fertilizer hopper 28A having a fertilizer supply port at the upper end and a lid 28B for the fertilizer hopper that opens and closes the fertilizer supply port. Each drug storage unit 33 includes a drug hopper 33A having a drug supply port at the upper end thereof, and a lid 33B for the drug hopper that opens and closes the drug supply port.

In the direct seeding device 15, the various child feeding parts 25 are supported by the above-mentioned short back support frame 23, so that the entire various child storage parts 24 connected to the upper ends of the corresponding seed feeding parts 25 are in front of the height. It is configured to be lower than the upper end of the support frame 22. Further, the lid 24B for various child hoppers is opened by opening the seed supply port of the corresponding seed hopper 24A by swinging displacement forward, and closing the seed supply port of the corresponding seed hopper 24A by swinging displacement backward. It is configured to swing back and forth. This makes it possible to easily replenish the seed paddy from the rear of the machine body to the various child storage portions 24.

In the drug administration device 17, each drug delivery section 34 is supported on the upper portion of the above-mentioned tall front support frame 22, so that the entire drug storage section 33 connected to the upper end of the corresponding drug delivery section 34 stores various children. It is configured to be located above the upper end of the portion 24. Further, the lid 33B for each drug hopper opens the drug supply port of the corresponding drug hopper 33A by swinging displacement forward, and closes the drug supply port of the corresponding drug hopper 33A by swinging displacement backward. It is configured to swing back and forth. Further, each drug hopper 33A is configured such that the upper end portion provided with the drug supply port is tilted backward. As a result, it is possible to easily supply the medicines to each medicine storage unit 33 from the rear of the machine without being hindered by the various child storage units 24, and while using the various child storage units 24 as a mounting table. ..

The fertilizer application device 16 has a tall front support frame 22 with each fertilizer feeding unit 29 connected to the lower end of the corresponding fertilizer storage unit 28 so that each fertilizer storage unit 28 is located above each drug storage unit 33. By supporting the upper end portion, each fertilizer storage portion 28 is configured to be located at the uppermost portion of the work unit A. When the work unit A is raised to the upper limit position, the fertilizer supply port formed at the upper end of each fertilizer hopper 28A is configured to approach the upper end of the handrail 13 provided at the rear of the traveling vehicle body 1. are doing. Further, the lid 28B for each fertilizer hopper opens the fertilizer supply port of the corresponding fertilizer hopper 28A by swinging backward, and closes the fertilizer supply port of the corresponding fertilizer hopper 28A by swinging forward. It is configured to swing back and forth. As a result, fertilizer replenishment for each fertilizer hopper 28A can be easily performed from the traveling vehicle body 1, and can be further facilitated by raising the work unit A to the upper limit position.

In the above configuration, the storage units 24, 28, and 33, which are arranged side by side in the work unit A, are arranged so that the one located on the rear side of the work unit A has a lower arrangement height. The position of the center of gravity of the work unit A can be moved closer to the traveling vehicle body side. This makes it possible to improve the stability of the weight balance as a passenger direct seeding machine.

Further, since the front support frame 22 supports each fertilizer feeding section 29 of the fertilizer applying device 16 and each drug feeding section 34 of the drug applying device 17, a support frame dedicated to the fertilizer feeding section and a support frame dedicated to the drug feeding section are provided. Compared with the case where they are provided individually, it is possible to simplify the configuration by reducing the number of parts.

As shown in FIGS. 3 and 4, the working unit A has a first holder 44 that holds the lid 24B for the corresponding seed hopper in a backward tilted posture with the seed supply port open, and a corresponding drug hopper. A second holder 45 for holding the lid 33B for holding the medicine supply port in a backward tilted posture is provided.

Each first holder 44 is configured in a hook-and-loop fashion manner from a first joining member 44A attached to the corresponding drug hopper 33A and a second joining member 44B attached to the corresponding seed hopper lid 24B. .. Further, each second holder 45 is configured as a hook-and-loop fastener type from a first joining member 45A attached to the corresponding fertilizer hopper 28A and a second joining member 45B attached to the lid 33B for the corresponding medicine hopper. ing.

From the above configuration, the various child storage units 24 are configured to include a lid 24B that opens and closes the seed supply port by swinging back and forth, but the various child storage units 24 are closer to each drug storage unit 33. Can be deployed at the location of. Further, although each drug storage unit 33 is provided with a lid 33B that opens and closes the drug supply port by swinging back and forth, each drug storage unit 33 and various child storage units 24 are brought closer to the fertilizer storage unit 28. It can be deployed in a position closer to the front. As a result, the position of the center of gravity of the work unit A can be moved closer to the traveling vehicle body side, and the weight balance of the passenger direct seeding machine as a whole can be improved.

As shown in FIGS. 3, 4 and 7, the dispensing device 17 directly sows the seeds fed by the various child feeding units 25 toward the field mud surface located directly below the various child feeding units 25. A drug supply section 36 corresponding to a position substantially directly below each drug delivery section 34 is provided to the device 15, and each of the dispensing hoses 35 extending from the corresponding drug delivery section 34 to the drug supply section 36 is hung substantially in a straight line. By adopting the configuration, it is easy to match the seeding position of the direct seeding device 15 with the dispensing position of the dispensing device 17 in the front-rear direction of the machine.

As shown in FIGS. 3 to 7 and 12, the transmission device 18 of the work unit A has an input unit 46 that receives power from the traveling vehicle body 1 transmitted via an external transmission shaft 27 and the like, and an input unit 46 that receives the received power. A power distribution shaft 47 that distributes power from 46 to the left and right, a low-speed transmission system 48 that transmits low-speed power from the left end of the power distribution shaft 47 to various child feeding portions 25 of the direct seeding device 15, and a fertilizer application device from the right end of the power distribution shaft 47. A high-speed transmission system 49 that transmits high-speed power to each fertilizer feeding section 29 of 16, and two corresponding seed feeding sections 25 and two drug feeding sections 34 in the direct seeding device 15 and the dispensing device 17 are interlocked and connected 3 It is equipped with two interlocking mechanisms 50 and the like.

That is, since the various child feeding sections 25 of the direct seeding device 15 and the drug feeding sections 34 of the dispensing device 17 are linked at low speed by low-speed power via the low-speed transmission system 48, the seeds are padded by the various child feeding sections 25 of the direct seeding device 15. It becomes easy to match the delivery timing of the drug with the delivery timing of the drug by each drug delivery unit 34 of the drug application device 17. This makes it easier to align the seeding position of the direct seeding device 15 with the dispensing position of the dispensing device 17 in the front-rear direction of the machine. By making it easy to match the sowing position and the dispensing position in the front-rear direction of the machine, it becomes possible to stably supply a small amount of the drug near the seed paddy. As a result, it is possible to effectively obtain medicinal effects such as disease control and insect repellent against seed paddy while reducing the amount of drug applied.

Further, when the fertilizer feeding unit 29 of the fertilizer applying device 16 and the drug feeding section 34 of the dispensing device 17 are interlocked, the seeding position of the direct seeding device 15 and the dispensing position of the dispensing device 17 in the front-rear direction of the machine are aligned. The required deceleration structure can be eliminated, thereby simplifying the configuration of the transmission device 18.

As shown in FIGS. 3 to 7 and 12 to 14, in the transmission device 18, the low speed transmission system 48 is after decelerating from the chain type deceleration mechanism 51 for decelerating the power from the power distribution shaft 47 and the chain type deceleration mechanism 51. The left-right first relay shaft 52 for taking out power, the six first-ended clutches 53 provided on the first relay shaft 52, and the six th-ths transmitted from the corresponding first-ended clutch 53 to the seed feeding section 25. It is equipped with a 1-gear power transmission mechanism 54, and the like.

The high-speed transmission system 49 includes a first conversion mechanism 55 that converts the rotational motion of the power distribution shaft 47 into a swing motion, and a second conversion mechanism 56 that converts the swing motion after conversion by the first conversion mechanism 55 into a forward rotational motion. , A second relay shaft 57 in the left-right direction that takes out the forward rotation motion after conversion by the second conversion mechanism 56 as a forward rotation power, three second fractional clutches 58 provided on the second relay shaft 57, and each second. It is provided with three second gear type transmission mechanisms 59, etc., which are transmitted from the fractional thread clutch 58 to the corresponding two fertilizer feeding portions 29.

Each interlocking mechanism 50 converts the rotational motion of the corresponding first gear type transmission mechanism 54 into a swing motion by the first conversion unit 60 and the swing motion after the conversion by the first conversion unit 60 into a forward rotary motion. A second conversion unit 61 and the like for conversion are provided, and the forward rotation motion after conversion by the second conversion unit 61 is configured to be transmitted to the corresponding two drug delivery units 34 as forward rotation power.

In the transmission device 18, the two first fractional clutch 53s on the left side that interrupt the transmission to the two seed feeding parts 25 on the left side and the two drug feeding parts 34 on the left side are switched to the same operating state, and the two on the left and right center sides. The two first-ended clutches 53 on the left and right center sides that interrupt the transmission to one seed feeding part 25 and the two drug feeding parts 34 on the left and right center sides are switched to the same operating state, and the two seed feeding parts 25 on the right side and The three third clutches 53 that are interlocked with each other so that the two first-ended clutches 53 on the right side that interrupt the transmission to the two drug feeding portions 34 on the right side are switched to the same operating state. It is provided with one linkage mechanism 62.

Further, the two first-ended clutches 53 on the left side and the second second-ended clutches 58 on the left side that interrupt the transmission to the two fertilizer feeding portions 29 on the left side are switched to the same operating state, and the two second clutches on the left and right center sides are switched to the same operating state. The one-ended clutch 53 and the second left-right center-side second-ended clutch 58 that interrupts the transmission to the two fertilizer feeding portions 29 on the left and right center sides are switched to the same operating state, and the two right-side first-ended clutch 53s are switched to the same operating state. The corresponding first linkage mechanism 62 and the second fractional clutch 58 are interlocked so that the second fractional clutch 58 on the right side, which interrupts the transmission to the two fertilizer feeding portions 29 on the right side, switches to the same operating state. It is provided with three second linking mechanisms 63 to be connected.

In the working unit A, three operating levers 64 capable of swinging in the left-right direction are distributed and deployed at locations corresponding to the second-ended clutch 58 in the front upper part of the seeding frame 14. Then, the operating state of the second end number clutch 58 on the left side is switched according to the left-right swing operation of the operation lever 64 in the left-right direction, and the left-right center side operation lever 64 is shaken in the left-right direction. The operating state of the second-ended clutch 58 on the left and right center side is switched, and the operating state of the second-ended clutch 58 on the right side is switched as the operation lever 64 on the right side swings in the left-right direction. There is.

That is, by arbitrarily swinging each operation lever 64 from the traveling vehicle body 1, the working state of the work unit A is changed to 6 articles for operating all the seed feeding section 25, the fertilizer feeding section 29, and the drug feeding section 34. Working state, left four-row working state that operates the four seed feeding parts 25, fertilizer feeding part 29, and drug feeding part 34 on the left side, the two seed feeding parts 25, fertilizer feeding part 29, and drug feeding part 34 on the left. The left two-row working state that operates, the right four-row working state that operates the four seed feeding parts 25, the fertilizer feeding part 29, and the drug feeding part 34 on the right, and the two seed feeding parts 25 and the fertilizer feeding part on the right. It is possible to switch to the right two-row working state in which the portion 29 and the medicine feeding portion 34 are operated.

As shown in FIGS. 12 and 14, the working unit A has three spaces 65 between two adjacent seed feeding units 25 in an interlocking state and between two adjacent drug feeding units 34 in an interlocking state. I have. Then, by effectively utilizing these spaces 65 and deploying the interlocking mechanism 50 corresponding to each space 65, the work unit A is miniaturized.

As shown in FIGS. 3, 4, and 8, the work unit A has a rake-like shape for leveling ruts and the like caused by the auxiliary wheels when the auxiliary wheels (not shown) are mounted inside the vehicle body of each rear wheel 6. The left and right leveling plates 66 are provided. Further, the left and right mud removal covers 67 are provided to prevent the mud splashed up by each rear wheel 6 from accumulating on the upper surface of the left and right leveling floats 19 located behind each rear wheel 6. As a result, it is possible to improve the leveling performance during forward traveling for work.

[Another Embodiment]

[1] The paddy field working machine may be configured to have a mid-mount fertilizer application specification equipped with a fertilizer storage unit 28, a fertilizer delivery unit 29, and the like of the fertilizer application device 16 at the rear of the traveling vehicle body 1. Further, it may be configured as a rear mount fertilizer application specification equipped with a fertilizer storage unit 28 and a fertilizer delivery unit 29 of the fertilizer application device 16 behind the main storage unit 24 of the main work device 15. Further, the walking type traveling vehicle body 1 may be provided with a main working device 15, a fertilizing device 16 and a drug applying device 17 to be configured as a walking type.

[2] The traveling vehicle body 1 may have auxiliary wheels mounted on at least the inside of the vehicle body or the outside of the vehicle body of the left and right rear wheels 6.

[3] The work unit A may be configured to perform work of a plurality of articles such as Article 4 or Article 8 other than Article 6. Further, the ground leveling float 19 may not be provided. Further, it may not be provided with at least one of the soil covering member 42 for application and the soil covering member 43 for fertilization.

[4] As the work unit A, each fertilizer supply unit 31 is fixedly equipped at a portion near the left and right outer ends in the left and right overhanging regions provided in the front end side portion of the corresponding leveling float 19, and each drug is supplied. By fixing the portion 36 to a portion near the center of the left and right in the left and right overhanging regions of the corresponding leveling float 19, the corresponding fertilizer supply portion 31 and the chemical supply portion 36 are positioned at predetermined intervals in the width direction of the machine body. It may be configured to be deployed in.

[5] As the work unit A, the plurality of drug supply units 36 are located at positions in front of the machine body with respect to the plurality of main supply parts 26, and at positions spaced apart from the corresponding main supply parts 26 in the width direction of the machine body. Also, a plurality of fertilizer supply units 31 are deployed at a position on the front side of the machine body with respect to the plurality of drug supply parts 36 and at the same position in the width direction of the machine body with the corresponding main supply part 26. It may be configured. Further, the plurality of drug supply units 36 are arranged at positions on the front side of the machine body with respect to the plurality of main supply parts 26 and at the same position in the width direction of the machine body with the corresponding main supply parts 26, and a plurality of fertilizers. Even if the supply unit 31 is configured to be deployed at a position on the front side of the machine body with respect to the plurality of drug supply parts 36 and at a position at a predetermined distance in the width direction of the machine body from the corresponding main supply part 26. good.

[6] As the work unit A, a support frame dedicated to the fertilizer application device and a support frame dedicated to the drug application device may be erected on the main frame 21 connected to the link mechanism 3.

[7] The main working device 15 includes a seedling stand as a main storage section 24 for seedlings, a plurality of star wheel type or belt type seedling vertical feeding mechanisms as a plurality of main feeding sections 25 for seedlings, and A seedling planting device provided with a plurality of crank-type or rotary-type planting mechanisms as a plurality of main supply units 26 for seedlings may be adopted. Further, the seeds which have been subjected to the calper coating treatment, the seeds which have not been subjected to the coating treatment, or the seeds such as wheat and vegetables may be sown in the field.

[8] The fertilizer application device 16 may be configured to supply fertilizer in the form of powder or liquid to the field. Further, each fertilizer supply unit 31 may not be provided with a groove-growing device 32 for fertilizer application, and fertilizer application may be performed by spraying or dropping for each work line.

[9] As the fertilizer application device 16, when the work unit A is raised to the upper limit position, the fertilizer supply port formed at the upper end of each fertilizer hopper 28A is provided at the upper end of the handrail 13 provided at the rear of the traveling vehicle body 1. It may be configured to be located above.

[10] Even if the fertilizer application device 16 is equipped with a plurality of fertilizer supply units 31 configured in a groove-making manner on the leveling float 19 in an arrangement that does not overlap with the rocking fulcrum 41 of the leveling float 19 in a side view. good.

[11] The medicine application device 17 may be configured to supply a medicine such as granular or liquid to the field. Further, each drug supply unit 36 may not be provided with a groove-growing device 37 for drug administration, and the drug may be configured to be sprayed or dropped for each work line.

[12] The drug application device 17 may be arranged so that the drug supply port provided in the upper part of each drug storage unit 33 is located above the upper end of each main storage unit 24. Further, the drug supply port provided in the upper part of each drug storage unit 33 may be arranged so as to be located below the upper end of each main storage unit 24.

[13] As the drug application device 17, each drug supply unit 36 is provided with the rear end portion of the drug application groover 37 provided therein in each fertilizer application groover 32 located behind them. It may be installed at a position closer to the front side of the machine body so as to overlap the front end portion of the groove assisting tool 38 in a side view.

[14] As the drug application device 17, each drug supply unit 36 may be equipped on the leveling float 19 in an arrangement that overlaps with the swing fulcrum 41 of the leveling float 19 in a side view.

[15] The main storage portion 24 includes a seed hopper 24A having a seed supply port at the upper end, and a lid 24B for the seed hopper that opens and closes the seed supply port by attaching / detaching to / from the seed hopper 24A. May be good.

[16] The main storage unit 24 may be configured to store one row of seeds or seedlings, two rows of seeds or seedlings, or all rows of seeds or seedlings.

[17] The fertilizer storage unit 28 includes a fertilizer hopper 28A having a fertilizer supply port at the upper end, and a lid 28B for the fertilizer hopper that opens and closes the fertilizer supply port by attaching / detaching to / from the fertilizer hopper 28A. May be good. Further, it may be configured to store one row of fertilizer, two rows of fertilizer, or all the rows of fertilizer.

[18] The drug storage unit 33 includes a drug hopper 33A having a drug supply port at the upper end, and a lid 33B for the drug hopper that opens and closes the drug supply port by attaching / detaching to / from the drug hopper 33A. May be good. Further, it may be configured to store one article of drug, two articles of drug, or all articles of drug. Further, the medicine hopper 33A may be configured so that the upper end thereof is horizontal.

[19] Engagement in which a holder 44 for holding the lid 24B for the seed hopper in a backward tilted posture with the seed supply port open is provided on either the seed hopper 24A or the lid 24B for the seed hopper. The member and the engaged member provided on the other side may be configured in an engaging manner.

[20] Engagement in which a holder 45 for holding the drug hopper lid 33B in a backward tilted posture with the drug supply port open is provided on either the drug hopper 33A or the drug hopper lid 33B. The member and the engaged member provided on the other side may be configured in an engaging manner.

[21] As shown in FIGS. 15 and 16, at least one of the groove grooving device 32 for fertilization and the grooving device 37 for drug application is an upper member made of stainless steel or the like as a first member that cannot be elastically deformed. It is composed of 70 and a lower member 71 made of resin or the like as a second member that can be elastically deformed in the groove width direction. Moreover, when the groove making load becomes small, the groove may be formed with a wide groove width.
Then, in this configuration, as shown in the figure, the upper end portion of the lower member 71 is externally fitted to the lower end portion of the upper member 70, and the lower member 71 is elastically deformed in the direction of narrowing the groove width. , The upper end portion of the lower member 71 may be configured to be restricted by contacting the lower end portion of the upper member 70.
Further, as shown in the figure, the groove-growing assisting tools 38 and 39 connected to the groove-growing devices 32 and 37 may be made of resin, and the lower member 71 may be integrally formed with the groove-growing assisting tools 38 and 39. ..

[22] At least one of the groove grooving device 32 for fertilization and the grooving device 37 for drug application can be elastically deformed in the groove width direction with an inner member made of stainless steel or the like as a first member that cannot be elastically deformed. It is configured in a double structure including an outer member made of resin or the like as a second member, and the outer member creates a groove with a narrow groove width when the groove load is large, and a wide groove when the groove load is small. The groove may be formed by the width, and the elastic deformation of the outer member in the direction of narrowing the groove width may be limited by the contact of the outer member with the inner member.

[23] At least one of the groove-growing device 32 for fertilization and the groove-growing device 37 for drug application is made entirely of an elastically deformable resin such as a rubber plate, so that the groove-growing load becomes narrower. It may be configured to make a groove with a groove width and to make a groove with a wide groove width when the groove making load becomes small.

[24] At least one of the fertilizer grooving device 32 and the drug grooving device 37 is made of a resin that can be elastically deformed as a whole, and the fertilizer guide tube 30 or the drug guide tube 35 is above the fertilizer guide tube 30 or the drug guide tube 35. It may be configured to integrally form a bellows portion connected to.

[25] As shown in FIG. 17, each of the leveling floats 19 is used between the groove-growing device 37 for drug application and the groove-growing device 32 for fertilization, with the rear ends facing backward from the left and right overhanging regions. It may be configured to include left and right grooving leveling portions 19C extending to a length located behind the grooving device 32.

According to this configuration, the field mud that has entered below each leveling float 19 due to the forward running for work is made by the groove of the groover 37 for medical treatment accompanying the running at this time. By being extruded to the left and right of the fertilizer groover 32 and to the left and right of the fertilizer applicator groover 32 by the fertilizer applicator groover 32, the fertilizer applicator groover 37 and the fertilizer applicator groover 32 Even if it becomes easy to concentrate and lift up between them, due to the action of the grooving area leveling section 19C located between them, the grooving device 37 for drug application and the grooving device 32 for fertilization can be used. It is possible to prevent the floating of field mud.

As a result, the field mud floats up from between the groove-growing device 37 for drug application and the groove-growing device 32 for fertilization, and the land preparation performance deteriorates due to the raised field mud riding on the leveling float 19. Can be prevented.

The present invention can be applied to a passenger direct sowing machine equipped with a direct sowing device as a main working device, a riding rice transplanter equipped with a seedling planting device as a main working device, and the like.

15 Main work equipment 16 Fertilizer application equipment 17 Fertilizer application equipment 19 Ground leveling float 19A 1st fixing part 19B 2nd fixing part 19C Grooving device between ground leveling part 26 Main supply part 31 Fertilizer supply part 32 Grooving device for fertilizer 36 Drug supply part 37 Grooving device for medical treatment 38 Grooving auxiliary tool 41 Swing fulcrum 42 Soil covering member for medical treatment 43 Soil covering member for fertilizer application 70 1st member 71 2nd member

Claims (9)

Equipped with a main work device for sowing or seedling planting and a drug application device that operates when traveling forward for work.
In the main working device, a plurality of main supply units for supplying seeds or seedlings to the field are arranged and arranged at regular intervals in the left-right direction.
The drug application device deploys a plurality of drug supply units at the same position in the aircraft width direction with the corresponding main supply unit and in front of the corresponding main supply unit in the front-rear direction of the aircraft .
A plurality of soil covering members for drug administration, which backfill each of the drug application grooves formed by the plurality of drug supply units, are arranged at the rear positions of the drug supply unit.
The paddy field working machine is configured such that the soil covering member for medicine is backfilled with a medicine groove between the medicine supply part and the main supply part . Equipped with fertilizer application device
The fertilizer application device deploys a plurality of fertilizer supply units that supply fertilizer to the field at positions spaced from the corresponding main supply units in the lateral width direction of the machine.
Each of the plurality of fertilizer supply units is configured as a groove-growing type in which a groove-growing device for fertilizer is used to make a groove on the mud surface of the field and supply fertilizer into the groove.
A plurality of fertilizer soil covering members for backfilling each of the fertilizer grooves formed by the plurality of fertilizer supply units are provided.
The plurality of soil covering members for medical treatment extend from the first fixing portion provided on the side opposite to the fertilizing groove adjacent to the filling groove to be backfilled in an obliquely backward inclined posture toward the filling groove.
The plurality of soil covering members for fertilization extend diagonally backward toward the fertilizer application groove to be backfilled from a second fixing portion provided on the opposite side of the application groove adjacent to the fertilizer application groove to be backfilled. The paddy field working machine according to item 1 . Equipped with a leveling float that leveles the mud surface of the field so that it can swing up and down.
Each of the plurality of fertilizer supply units is configured as a groove-growing type in which a groove-growing device for fertilizer is used to create a groove on the mud surface of the field and supply fertilizer into the groove, and the ground leveling float swings from a side view. The paddy field working machine according to claim 2 , which is equipped on the leveling float in an arrangement overlapping with a fulcrum. Equipped with a leveling float to level the mud surface of the field,
The paddy field working machine according to claim 2 or 3 , wherein each of the plurality of drug supply units is provided on a front end side portion where the bottom surface is in a warped state in the leveling float. Equipped with a leveling float that leveles the mud surface of the field so that it can swing up and down.
The paddy field working machine according to claim 2 , wherein each of the plurality of drug supply units is equipped on the leveling float in an arrangement that overlaps with the rocking fulcrum of the leveling float in a side view. Each of the plurality of fertilizer supply units is configured as a groove-growing type in which a groove-growing device for fertilizer is used to make a groove on the mud surface of the field and supply fertilizer into the groove.
Each of the fertilizer grooving devices is provided with a grooving assisting tool that extends forward from their front end to assist the grooving by the fertilizer grooving device.
One of claims 2 to 4 , wherein each of the plurality of drug supply units is arranged at a position where the rear end portion of the groove grooving device for drug administration overlaps the front end portion of the grooving assisting tool in a side view. Paddy field work machine described in. Each of the grooving devices is configured to be elastically deformable in the groove width direction so that the grooving device is made with a narrow groove width when the grooving load is large and the grooving is made with a wide groove width when the grooving load is small. The paddy field working machine according to claim 2 , 3 , or 6 . Each of the groove-growing devices includes a first member that cannot be elastically deformed and a second member that can be elastically deformed in the groove width direction, and the first member is arranged inside the second member to form a groove width. The paddy field working machine according to claim 7 , wherein the elastic deformation of the second member in the direction of narrowing is restricted by contact with the first member. Equipped with a leveling float to level the mud surface of the field,
The plurality of fertilizer supply units are configured in a groove-grooving system in which a groove-growing device for fertilizer is used to make a groove on the mud surface of the field and supply fertilizer into the groove.
The ground leveling float is equipped with a grooving device for drug application and the grooving device for fertilization.
The ground leveling float is formed so that the rear end is located behind the fertilizer-growing groover between the drug-applying groove-growing device and the fertilizer-applying groove-growing device. The paddy field working machine according to any one of claims 2 to 8 , further comprising a unit.

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