JP6861180B2 - 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 operate 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 (traveling vehicle body), and the sowing device (main work). A device), a plurality of fertilizer applicators, and a drug spraying device (drug application device) are connected to the rear part of the traveling machine so as to be able to move up and down via a vertically swingable link mechanism, and a feeding unit at the rear part of the machine body. There is a case where a plurality of fertilizer application hoses are erected over each groove device at 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 prevention 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-giving 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 with insufficient backfilling of the application groove. When the seeds were buried, the germination rate and seedling standing rate decreased remarkably.

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 seed burial, or to cause seedling collapse due to poor planting. Is to prevent.

The problem-solving means of the present invention is
It is equipped with a main work device for sowing or seedling planting that operates during forward travel for work, a fertilizer application device, and a drug application device that administers a drug having at least one medicinal effect of disease prevention or insect repellent on seeds or seedlings.
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 fertilizer application device deploys a plurality of fertilizer supply units for supplying fertilizer to the field at positions spaced apart from the corresponding main supply units in the width direction of the machine.
The Seyaku device, a medicine feeding portion of the multiple, at the same position in the vehicle body width direction of a corresponding said main supply portion, and, than the main supply portion corresponding are deployed forward in the vehicle body front-rear direction ..

According to this means, it is possible to increase the separation distance between each main supply unit and each drug supply unit deployed at the same position in the width direction of the airframe in the front-rear direction of the airframe. As a result, during forward traveling for work, from the time when each of the preceding groove-making type drug supply sections forms the drug application groove to the time when each subsequent main supply section supplies seeds or seedlings to the drug application groove forming portion. It is possible to increase the time difference between the two, and it becomes easy to secure the time required for backfilling the medicine groove between the time when each drug supply part is made and the time when each main supply part supplies seeds or seedlings.

That is, in order to facilitate the medicinal effect of seeds or seedlings, each main supply unit and each groove-type drug supply unit are arranged at the same position in the width direction of the machine body, and the seeds or seedlings are supplied in the width direction of the machine body. Even if the position and the application position are set to be the same, the application groove formed by each drug supply unit of the application device until each main supply unit of the subsequent main work device supplies seeds or seedlings. In between, it can be backfilled by the mud that flows into the medicine ditch after passing through each drug supply unit, and seeds or seedlings can be supplied to the field mud at the backfilled medicine ditch formation site.

As a result, seeds or seedlings are supplied in a state where the backfilling of each application groove is insufficient, resulting in a decrease in the emergence rate and seedling standing rate due to seed burial, or the occurrence of seedling collapse due to poor planting. Can be prevented.

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 poor backfilling of each drug groove.

Therefore, it is possible to accurately supply the seeds or seedlings and the chemicals in the field, and thereby it is possible to effectively obtain the medicinal effect on the seeds or the seedlings while reducing the amount of the chemicals to be applied. It is possible to prevent a decrease in the emergence rate and seedling standing rate due to burial of seedlings, or to prevent seedlings from collapsing due to poor planting, and as a result, it is possible to promote seedling growth.

As one of the means for making the present invention more suitable,
A plurality of application soil covering members for backfilling each of the application grooves formed by the plurality of drug supply units are provided between the drug supply unit and the main supply unit arranged in the front-rear direction.

According to this means, the field mud or the like extruded in the left-right direction along with the groove making of each drug supply unit performed during the forward traveling for work can be guided to each application groove by the subsequent application soil covering member. ..

As a result, when the mud in the field is hard and difficult to flow into the drug application ditch, or when the work speed is high and each preceding drug supply section creates a groove until each subsequent main supply section supplies seeds or seedlings. Even when it becomes difficult to secure the time required for backfilling the medicine groove in the above, it is possible to quickly and surely backfill each medicine groove.

As a result, regardless of the hardness of the field mud and the working speed, the seeds or seedlings are supplied in a state where the backfilling of each application groove is insufficient. It is possible to prevent the occurrence of seedling collapse due to a decrease or poor planting. 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 poor backfilling of each drug groove.

Therefore, regardless of the hardness of the field mud and the working speed, it is possible to accurately supply the seeds or seedlings and the chemicals to the field, thereby effectively exerting the medicinal effect on the seeds or seedlings while reducing the application amount. In addition to being able to obtain the seeds, it is possible to prevent a decrease in the emergence rate and seedling standing rate due to the burial of seeds, or a fall of seedlings due to poor planting, and as a result, it is possible to promote the growth of seedlings.

As one of the means for making the present invention more suitable,
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.
It is provided with a plurality of soil covering members for fertilizer application that backfill each of the fertilizer application grooves formed by the plurality of fertilizer supply units.
The plurality of soil covering members for application are extended in an obliquely backward inclined posture from the first fixing portion provided on the side opposite to the fertilizer groove adjacent to the application groove to be backfilled toward the backfilling application 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 side opposite to the application groove adjacent to the fertilizer application groove to be backfilled.

According to this means, the field mud extruded to the side of each first fixed portion of the field mud extruded in the left-right direction along with the groove making of each chemical supply unit performed during the forward traveling for work, etc. Each application groove can be guided by the application soil covering member.

As a result, when the mud in the field is hard and difficult to flow into the drug application ditch, or when the work speed is high and each preceding drug supply section creates a groove until each subsequent main supply section supplies seeds or seedlings. Even when it becomes difficult to secure the time required for backfilling the medicine groove in the above, it is possible to quickly and surely backfill each medicine groove.

In addition, the field mud that is pushed out to the side of each second fixed part of the field mud that is pushed out in the left-right direction along with the groove created in each fertilizer supply part that is performed during forward running for work is covered with soil for subsequent fertilizer application. Each member 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 application groove, the backfilling of each fertilizer application groove can be performed promptly and surely.

As a result, regardless of the hardness of the field mud and the working speed, the seeds or seedlings are supplied in a state where the backfilling of each application groove is insufficient. It is possible to prevent the occurrence of seedling collapse due to a decrease or poor planting. In addition, it is possible to prevent the drug or fertilizer supplied to each drug groove or each fertilizer groove from spreading over a wide area and weakening the drug effect or fertilizer effect due to poor backfilling of each drug groove and each fertilizer groove. ..

Therefore, regardless of the hardness of the field mud and the working speed, it is possible to accurately supply the seeds or seedlings as well as the chemicals and fertilizers to the field, thereby reducing the amount of chemicals and fertilizers applied to the seeds or seedlings. It is possible to effectively obtain medicinal and fertilizer effects, and it is possible to prevent a decrease in the emergence rate and seedling standing rate due to burying seeds, or to prevent seedlings from collapsing due to poor planting. It can promote upbringing.

As one of the means for making the present invention more suitable,
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 to supply fertilizer into the groove, and the ground-leveling float swings from a side view. It is equipped on the leveling float in an arrangement that overlaps with the fulcrum.

According to this means, a ground leveling float equipped so as to be able to swing up and down for leveling the mud surface of the field can also be used as a support member for supporting each fertilizer supply unit. Then, while the ground-leveling float is also used as the support member in this way, the fertilizer application depth by each fertilizer supply unit can be made constant with high accuracy regardless of the vertical swing of the ground-leveling float.

Therefore, it is possible to improve the fertilization accuracy while simplifying the configuration by reducing the number of parts, and it is possible to further promote the growth of seedlings.

As one of the means for making the present invention more suitable,
Equipped with a leveling float to level the mud surface of the field,
Each of the plurality of drug supply units is provided on the front end side portion where the bottom surface of the ground leveling float is in a warped state.

According to this means, the leveling float can also be used as a support member for supporting each drug supply unit. Then, while the ground leveling float is also used as the support member in this way, the separation distance between each main supply unit and each drug supply unit in the front-rear direction of the machine body can be increased, whereby each drug supply unit can create a groove. It becomes easy to secure the time required for backfilling the application groove between the time when each main supply unit supplies seeds or seedlings.

Therefore, while simplifying the configuration by reducing the number of parts, the seeds or seedlings are supplied by each main supply unit in a state where the backfilling of each application groove is insufficient, and the seeds germinate due to burying. It is possible to prevent a decrease in the rate and the rate of seedling standing, or the occurrence of seedling collapse due to poor planting.

As one of the means for making the present invention more suitable,
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 drug supply units is equipped on the leveling float in an arrangement that overlaps with the swinging fulcrum of the leveling float in a side view.

According to this means, a ground leveling float equipped so as to be able to swing up and down for leveling the mud surface of the field can also be used as a support member for supporting each drug supply unit. Then, while the ground leveling float is also used as the support member in this way, the depth of application by each drug supply unit can be made constant with high accuracy regardless of the vertical swing of the leveling float.

Therefore, it is possible to improve the accuracy of drug administration while simplifying the configuration by reducing the number of parts, and it is possible to further promote the growth of seedlings.

As one of the means for making the present invention more suitable,
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 aid that extends forward from their front end to assist in grooving by the fertilizer grooving device.
Wherein the plurality of the respective drug supply unit, the rear end portion of the work groove instrument facilities medicated are deployed in a position overlapping with front and side view of the operation groove aid.

According to this means, when each fertilizer supply unit and each drug supply unit are arranged so that the groovers are arranged close to each other on the left and right, the fertilizer groover and the drug groover are generated. It is possible to prevent mud clogging between the two, and it is possible to prevent poor groove making and poor backfilling of each application groove and each fertilizer application groove due to this mud clogging.

In addition, among the field mud extruded in the left-right direction along with the groove making of each chemical supply part performed during forward traveling for work, the field mud extruded to the fertilizer supply part side is assisted in the subsequent fertilizer application. It can be guided to the rear side of the aircraft by the tool, and the guided field mud is pushed out to the left and right along with the groove of each fertilizer supply part, together with the field mud pushed to the application groove side. It can be flowed toward each application groove.

Therefore, the backfilling of each medicine groove can be performed more quickly, and it is more effective to prevent the seeds or seedlings from being supplied by each main supply unit in a state where the backfilling of each medicine groove is insufficient. be able to.

As one of the means for making the present invention more suitable,
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 groove is made with a wide groove width when the grooving load is small. ing.

The groove load increases as the mud in the field becomes harder, and decreases as the mud in the field becomes softer. Also, the faster the work speed, the larger the work speed, and the slower the work speed, the smaller the work speed.

Therefore, according to this means, the more difficult it is to backfill each application groove or each fertilizer application groove due to the hardness of the field mud and the high working speed, the more the application groove or fertilizer application groove is created by each groove-growing device. The groove width of the groove becomes narrower, and the backfilling of each drug application groove or each fertilizer application groove becomes easier accordingly.

As a result, regardless of the hardness of the field mud and the working speed, the seeds or seedlings are supplied in a state where the backfilling of each application groove is insufficient. It is possible to prevent the occurrence of seedling collapse due to a decrease or poor planting. In addition, it is possible to prevent the drug or fertilizer supplied to each drug groove or each fertilizer groove from spreading over a wide area and weakening the drug effect or fertilizer effect due to poor backfilling of each drug groove or each fertilizer groove. ..

On the contrary, the more easily the backfilling of each application groove or each fertilizer application groove is performed due to the softness of the field mud and the slow running speed, the wider the groove width of the application groove to be created by each groove making device. Therefore, the time required for backfilling each application groove or each fertilization groove can be lengthened accordingly.

As a result, even when the mud in the field is soft and easily flows into each application groove or each fertilizer application groove, or when the work speed is slow and each application groove or each fertilizer application groove is made and then backfilled immediately. , It is possible to secure a predetermined time required for backfilling each application groove or each fertilization groove.

As a result, regardless of the hardness of the field mud and the working speed, the backfilling of each groove is performed from the stage during the supply of the drug or fertilizer into each groove by each drug supply section or each fertilizer supply section. It is possible to prevent the diffusion of the chemical or fertilizer from each groove.

Then, each of the grooving devices is elastically deformed in the groove width direction according to the grooving load, so that mud, chemicals or fertilizer adhering to the grooving device can be automatically removed from the grooving device. As a result, it is possible to prevent poor application or poor fertilizer application due to the adhesion and accumulation of mud, chemicals or fertilizer on the groove making device.

Therefore, regardless of the hardness of the field mud and the working speed, it is possible to accurately supply the seeds or seedlings and the chemicals or fertilizers to the field, thereby effectively obtaining the medicinal or fertilizing effect on the seeds or seedlings. In addition to this, it is possible to prevent a decrease in the emergence rate and seedling standing rate due to burial of seeds, or a fall of seedlings due to poor planting, and as a result, it is possible to promote the growth of seedlings.

As one of the means for making the present invention more suitable,
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 elastic deformation of the second member in the direction of narrowing is limited by the contact with the first member.

According to this means, it is possible to effectively suppress the possibility that the grooving load becomes too large and the lower end side of each grooving device is blocked due to the fact that the field mud is hard and the working speed is high.

Therefore, even if the grooving load becomes too large due to the hard field mud and the high working speed, the grooving of each grooving device ensures the minimum grooving width required for drug application or fertilization. It is possible to apply appropriate medicine or fertilizer.

As one of the means for making the present invention more suitable, a ground leveling float for leveling the mud surface of the field is equipped.
The plurality of fertilizer supply units are constructed in 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.
The ground leveling float is equipped with the groove-growing device for drug application and the groove-growing device for fertilization.
The ground leveling float is formed so that the rear end is located behind the fertilizer-applying groove-growing device between the drug-applying groove-growing device and the fertilizer-applying groove-growing device. It has a part.

According to this means, the leveling float can also be used as a support member for supporting each chemical supply unit and each fertilizer supply unit.

In addition, the field mud that has entered below the ground leveling float during the work run is pushed out to the left and right of the drug grooving device by the groove of the drug grooving device that accompanies the run at this time, and is used for fertilization. Even if it is pushed out to the left and right of the groove-growing device for fertilization by the groove-growing device of the groove-growing device, it becomes easy to concentrate and float between the groove-growing device for drug application and the groove-growing device for fertilization. By the action of the ground leveling portion between the groove-growing devices located between the two, it is possible to prevent the field mud from rising between the groove-growing device for drug application and the groove-growing device for fertilization.

This prevents the field mud from floating between the groover for chemical application and the groover for fertilization, and the deterioration of the leveling performance due to the raised field mud riding on the leveling float. Can be done.

It is a left side view of a passenger direct seeding machine. It is a top view of the 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 the medicine application apparatus. It is a cross-sectional plan view of the work unit which shows the arrangement of a seed supply part, a fertilizer supply part, and a drug supply part. It is a longitudinal 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 the main part which shows the interlocking structure of a direct seeding apparatus and a medicine application apparatus. It is a longitudinal side view of the main part which shows the structure of the fertilizer supply part and the drug 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 drug supply part in another embodiment. It is a cross-sectional plan view of the main part which shows the shape of the leveling float in another embodiment.

Hereinafter, as an example of a mode 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 illustrated in the present embodiment is an elevating cylinder 2 in which a single-acting hydraulic cylinder is adopted at the rear portion of a traveling vehicle body 1 configured in a passenger-type four-wheel drive type. The work unit A for sowing is connected 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) provided 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. On the rear side of the traveling vehicle body 1, 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 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. A handrail 13 to be 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 and fertilizer as a main work device for sowing are attached to a sowing frame 14 which is rotatably connected to the rear end of the link mechanism 3. Fertilizer application device 16 for 6 rows to supply to the field, medicine application device 17 for 6 rows to supply chemicals to the field, transmission device 18 to transmit to each device 15 to 17, mud surface of the field to be worked when traveling forward for work The unit is equipped with three T-shaped ground leveling floats 19 for leveling the ground, and left and right groove cutting tools 20 for forming drainage grooves in the field as the work moves forward.

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 the left and right seeds for storing three rows of seeds as a main storage part for storing the iron-coated seeds, which is an example of seeds. Part 24, six seed feeding parts 25 as a main feeding part as a main feeding part which intermittently feeds a predetermined amount of seed rice downward from the corresponding seed storage part 24, and seeds fed downward by the corresponding seed feeding part 25. It is provided with six seed supply units 26 as main supply units that drop and supply toward the mud 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 from the traveling vehicle body 1 transmitted via the external transmission shaft 27 and the transmission device 18, so that a predetermined amount of seed paddy is used as one stock in the front-rear direction. It is configured as a mud spot sowing method for 6 rows, in which a maximum of 6 rows are sown on the mud surface of the field at predetermined intervals.

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 connects a seed supply unit 26 to 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 arranged with the corresponding seed delivery units 25 and the seed discharge port at regular intervals in the left-right direction. It is open and deployed.

As shown in FIGS. 1 to 8, the fertilizer application device 16 intermittently receives a predetermined amount of fertilizer from the left and right fertilizer storage units 28, which store three rows of granular fertilizer, which is an example of fertilizer, and the corresponding fertilizer storage units 28. 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 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 a predetermined interval. It is configured for 6 rows, where fertilizer is applied for up to 6 rows in a fresh state.

The left and right fertilizer storage units 28 have three fertilizer discharge ports (not shown) aligned at their lower ends at regular intervals in the left-right direction. Then, a fertilizer delivery unit 29 is connected to each of the fertilizer discharge port forming locations in each fertilizer storage unit 28. Each fertilizer feeding unit 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 unit 28.

Each fertilizer supply unit 31 is configured as a groove-growing type in which a groove-growing device 32 for fertilizer application formed in a U-shape in a plan view that opens the rear portion creates a groove on the mud surface of the field after leveling and supplies fertilizer into the groove. 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 with respect to 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 overhang areas in preparation for.

The drug application device 17 intermittently receives a predetermined amount of a drug from three drug storage units 33 that store two doses of a drug such as a powdery 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 delivery sections 34, the six drug delivery hoses 35 as drug guide tubes for guiding the delivered drug by the corresponding drug delivery section 34, and the drugs guided by the corresponding drug hose 35 to the field. It is provided with six drug supply units 36, and the like. Then, each drug feeding unit 34 is operated by the work power 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 separated in the front-rear direction at a predetermined interval. It is configured for 6 articles to administer up to 6 articles in the state.

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

From the above configuration, at the time of forward traveling for work in which the work unit A is operated, first, each ground 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 body with respect to the planned seeding location of the various child supply parts 26 in the above, and each medicine delivery part 34 of the medicine apparatus 17 supplies the medicine delivered 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 sowing location of the various child supply units 26 on the field mud surface after the land preparation by each leveling float 19. Fertilizer application grooves are formed at positions spaced apart from each other in the 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 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 out 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, the time difference between each of the preceding groove-making type drug supply sections 36 forming the drug application groove and the subsequent seeding of the various child supply sections 26 at the application groove forming portion during the forward traveling for work. It becomes easy to secure the time required for backfilling the drug application groove between the time when each drug supply unit 36 creates a groove and the time when various child supply units 26 sow.

That is, in order to make it easier for the seed paddy to obtain the medicinal effect, the mud-spot seeding type child supply unit 26 and the groove-growing type chemical supply unit 36 are arranged at the same position in the width direction of the machine, and in the width direction of the machine. 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 that has been subjected to the iron coating treatment from being buried due to the sowing performed in a state where the backfilling of each application groove is insufficient, and the seedlings that are caused by this burial 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-type fertilizer supply units 31 and the groove-type chemical supply units 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 groove-growing devices 32 for fertilization and each of the groove-growing devices 37 for drug application extends forward from their front ends, and the groove-growing devices 32 and 37 respectively. 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, each of the ground leveling floats 19 has a front end side portion having the above-mentioned left and right overhang areas in order to improve the leveling performance against 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 sowing 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 chemical supply unit 36, and the configuration can be simplified by reducing the number of parts. Then, while each ground 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 ground 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 chemical supply unit 36 in the front-rear direction of the machine body. 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 drug application groove between the time when each drug supply unit 36 creates the groove and the time when the various child supply units 26 sow.

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 chemical 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 body, and the guided field mud is pushed out to the application groove side of the field mud extruded in the left-right direction along with the groove created by 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 application groove can be performed more quickly, and it is possible to more effectively prevent the seeding from being carried out in a state where the backfilling of each application groove is insufficient.

As shown in FIGS. 3 to 5 and 8, each of the ground leveling floats 19 has left and right medicine covering members 42 for backfilling and leveling each of the medicine grooves formed by the left and right medicine 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 the front-rear direction. 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 application groove 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 created by each chemical 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 drug application ditch, or when the work speed is high and the preceding drug supply section 36 creates a groove and the subsequent various child supply sections 26 sow the drug. Even when it becomes difficult to secure the time required to backfill the grooves, it is possible to quickly and reliably backfill each drug groove, and sowing 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 an obliquely backward tilted posture so that the extension 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 followed. 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 side of the rear side of the machine body with respect to the left and right support shafts 41 of the left and right leveling floats 19 arranged on the left and right end sides thereof. .. On the other hand, in the sowing 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 is provided with the 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 the rear side of the bracket 68 provided for the corresponding leveling float 19. It is provided with a descent blocking portion 21B that prevents the descent swing from the basic posture of the corresponding leveling float 19 by contact.

That is, since the left and right float support members 40 are provided 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 ground leveling floats 19. Further, since the left and right float support portions 21A of the main frame 21 are provided with the lowering prevention portions 21B, the drainage groove is formed due to the groove cutting tool 20 rising with the downward swing of the left and right leveling floats 19. Defects can be prevented.

As shown in FIGS. 1 to 5, the work unit A is provided with left and right fertilizer storage units 28 for storing fertilizers that consume the most amount per unit area on the front side thereof, and on the rear side side 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 sowing machine, various child storage units are used. The seed paddy can be easily replenished to 24 from the rear of the aircraft.

As described above, each fertilizer storage unit 28 is arranged on the front side of the machine body from each drug storage unit 33, whereas as described above, each fertilizer supply unit 31 is located on the rear side of the machine body rather than each drug supply unit 36. By deploying, each fertilizer hose 30 and each application hose 35 over the corresponding ones intersect with 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, 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 portions 25 are supported by the above-mentioned short rear support frame 23, so that the entire various seed storage portions 24 connected to the upper ends of the corresponding seed feeding portions 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 the seed supply port of the corresponding seed hopper 24A is closed by swinging displacement backward. It is configured to swing back and forth. As a result, it is possible to easily replenish the seed paddy from the rear of the machine body to the various child storage units 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 inclined backward. As a result, the replenishment of the drug from the rear of the machine to each drug storage unit 33 can be easily performed without being hindered by the various child storage units 24 and while using the various child storage units 24 as a mounting table. ..

In the fertilizer application device 16, each fertilizer feeding unit 29 connected to the lower end of the corresponding fertilizer storage unit 28 is 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. doing. Further, the lid 28B for each fertilizer hopper opens the fertilizer replenishment port of the corresponding fertilizer hopper 28A by swinging backward, and closes the fertilizer replenishing 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. As a result, the stability of the weight balance as a passenger direct seeder can be improved.

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 work 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 lid 33B in a backward tilted posture with the drug supply port open is provided.

Each first holder 44 is composed of 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 in a hook-and-loop fashion manner. .. 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 corresponding lid 33B for the application 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 entire passenger direct seeding machine 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 portions 25 toward the field mud surface located directly below the various child feeding portions 25. A drug supply unit 36 corresponding to a position substantially directly below each drug delivery unit 34 is provided to the device 15, and each of the application hoses 35 extending from the corresponding drug delivery unit 34 to the drug supply unit 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 body.

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 delivery section 29 of 16, and two corresponding seed delivery sections 25 and two drug delivery sections 34 in the direct sowing device 15 and the drug application 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 parts 25 of the direct seeding device 15 and the drug feeding parts 34 of the medicine dispensing device 17 are interlocked at low speed by low-speed power via the low-speed transmission system 48, the seed paddy by the various child feeding parts 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. As a result, it becomes easy 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. Then, since it is easy to match the sowing position and the application position in the front-rear direction of the machine body, 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 prevention 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 unit 34 of the drug applying device 17 are interlocked with each other, the seeding position of the direct sowing device 15 and the dispensing position of the drug applying 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 decelerated 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 and right first relay shaft 52 for taking out power, the six first fractional clutch 53 provided on the first relay shaft 52, and the six first relay shafts 53 transmitted from the corresponding first fractional clutch 53 to the seed feeding portion 25. It is equipped with a 1-gear type 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. The second conversion unit 61 and the like to be converted are provided, and the forward rotation motion after conversion by the second conversion unit 61 is transmitted to the corresponding two drug feeding units 34 as the forward rotation power.

In the transmission device 18, the two first fractional clutches 53 on the left side that interrupt the transmission to the two seed delivery parts 25 on the left side and the two drug delivery 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 fractional 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 two seed feeding parts 25 on the right side and Three thirds that interlock and connect the corresponding two first fractional clutches 53 so that the two rightmost first fractional clutches 53 that interrupt the transmission to the two rightward drug delivery portions 34 are switched to the same operating state. It is provided with a 1-coordination mechanism 62.

Further, the two first fractional clutches 53 on the left side and the second fractional clutch 58 on the left side that interrupts 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 second 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 linking 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 work unit A, three operating levers 64 capable of swinging in the left-right direction are distributed and arranged at locations corresponding to the second fractional clutch 58 in the front upper portion of the seeding frame 14. Then, the operating state of the second fractional clutch 58 on the left side is switched according to the swinging operation of the left operating lever 64 in the left-right direction, and the operating state of the left-right center side operating lever 64 is swung 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 operating 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 on the left side, fertilizer feeding part 29, and drug feeding part 34, the two seed feeding parts 25 on the left side, fertilizer feeding part 29, and drug feeding part 34. 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 chemical 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 drug feeding portion 34 are operated.

As shown in FIGS. 12 and 14, the work unit A has three spaces 65 extending from between two seed feeding portions 25 adjacent to each other in an interlocking state to between two drug feeding portions 34 adjacent to each other 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 ground leveling plates 66 are provided. Further, the left and right mud removal covers 67 are provided to prevent the mud splashed up by each of the rear wheels 6 from accumulating on the upper surfaces of the left and right leveling floats 19 located behind each of the rear wheels 6. As a result, it is possible to improve the leveling performance during forward traveling for work.

[Another Embodiment]

[1] The paddy field work machine may be configured to have a mid-mount fertilizer application specification equipped with a fertilizer storage unit 28 and a fertilizer delivery unit 29 of the fertilizer application device 16 at the rear of the traveling vehicle body 1. Further, it may be configured to have a rear mount fertilizer application specification in which a fertilizer storage unit 28 and a fertilizer delivery unit 29 of the fertilizer application device 16 are provided behind the main storage unit 24 of the main work device 15. Further, the walking vehicle body 1 may be provided with a main working device 15, a fertilizer applying device 16 and a drug applying device 17 to form 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, at least one of the chemical application soil covering member 42 and the fertilizer application soil covering member 43 may not be provided.

[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 ground 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 overhang areas 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 with the corresponding main supply part 26 in the width direction of the machine body. 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 portion 24 for seedlings, a plurality of star wheel type or belt type seedling vertical feeding mechanisms as a plurality of main feeding portions 25 for seedlings, and a plurality of seedling vertical feeding mechanisms. A seedling planting device including 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 of wheat, vegetables and the like may be sown in the field.

[8] The fertilizer application device 16 may be configured to supply fertilizer such as 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 ground leveling float 19 in an arrangement that does not overlap with the rocking fulcrum 41 of the ground leveling float 19 in a side view. Good.

[11] The drug application device 17 may be configured to supply a chemical 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 may be configured so that the drug is sprayed or dropped for each work line.

[12] The drug application device 17 may be provided 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] The drug application device 17 may be equipped with each drug supply unit 36 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 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 drug hopper 33A may be configured so that the upper end thereof is horizontal.

[19] Engagement in which a holder 44 for holding the seed hopper lid 24B in a backward tilted posture with the seed supply port open is provided on either one of the seed hopper 24A and the seed hopper lid 24B. 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 lid 33B for the drug hopper in a backward tilted posture with the drug supply port open is provided on either one of the drug hopper 33A and the lid 33B for the drug hopper. An engaging member may be formed from the member and the engaged member provided on the other side.

[21] As shown in FIGS. 15 and 16, at least one of the groove-growing device 32 for fertilization and the groove-growing 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 to be connected and equipped 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-growing device 32 for fertilization and the groove-growing 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 is grooved with a narrow groove width when the groove load is large, and a wide groove is formed 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 narrow when the load is large. 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 an elastically deformable resin as a whole, and the fertilizer guide pipe 30 or the drug guide pipe 35 is above the fertilizer guide pipe 30 or the drug guide pipe 35. The bellows portion connected to the bellows portion may be integrally formed.

[25] As shown in FIG. 17, each rear end of each ground leveling float 19 is applied backward from the left and right overhanging regions between the groove-growing device 37 for drug application and the groove-growing device 32 for fertilization. It may be configured to include left and right grooving device 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 subjected to the groove making of the grooving device 37 for medical treatment accompanying the running at this time, and the grooving device 37 for medical treatment. By being extruded to the left and right of the fertilizer groover 32 and pushed to the left and right of the fertilizer applicator groover 32 by the groove of the fertilizer applicator 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 device inter-ground leveling portion 19C located between them, it is possible to move from between the grooving device 37 for drug application and the grooving device 32 for fertilization. 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 chemical application and the groove-growing device 32 for fertilization, and the land-leveling 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 Drug application equipment 19 Ground leveling float 19A 1st fixing part 19B 2nd fixing part 19C Grooving grooving grooving part 26 Main supply part 31 Fertilizer supply part 32 Grooving device for fertilizer 36 Chemical supply part 37 Grooving device for drug treatment 38 Groove auxiliary tool 41 Swing fulcrum 42 Soil covering member for drug application 43 Soil covering member for fertilizer application 70 First member 71 Second member

Claims (10)

It is equipped with a main work device for sowing or seedling planting that operates during forward travel for work, a fertilizer application device, and a drug application device that administers a drug having at least one medicinal effect of disease prevention or insect repellent on seeds or seedlings.
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 fertilizer application device deploys a plurality of fertilizer supply units for supplying fertilizer to the field at positions spaced apart from the corresponding main supply units in the width direction of the machine.
In the drug application device, a plurality of drug supply units are arranged at the same position in the width direction of the machine with the corresponding main supply part, and in front of the corresponding main supply part in the front-rear direction of the machine. Working machine. The paddy field working machine according to claim 1, wherein a plurality of soil covering members for application that backfill each of the application grooves formed by the plurality of drug supply units are arranged at a rear position of the drug supply unit. 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.
It is provided with a plurality of soil covering members for fertilizer application that backfill each of the fertilizer application grooves formed by the plurality of fertilizer supply units.
The plurality of soil covering members for application are extended in an obliquely backward inclined posture from the first fixing portion provided on the side opposite to the fertilizer groove adjacent to the application groove to be backfilled toward the backfilling application 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 side opposite to the application groove adjacent to the fertilizer application groove to be backfilled. The paddy field working machine according to item 2. 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 to supply fertilizer into the groove, and the ground leveling float swings from a side view. The paddy field working machine according to any one of claims 1 to 3, which is equipped on the leveling float in an arrangement that overlaps with a fulcrum. Equipped with a leveling float to level the mud surface of the field,
The paddy field working machine according to any one of claims 1 to 4, 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 any one of claims 1 to 3, wherein each of the plurality of drug supply units is provided on the leveling float in a layout that overlaps with the swinging 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 aid that extends forward from their front end to assist in grooving by the fertilizer grooving device.
Any one of claims 1 to 6 in which each of the plurality of drug supply units is arranged at a position where the rear end portion of the groove-growing device for drug administration overlaps the front end portion of the groove-growing 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 grooved with a narrow groove width when the grooving load is large, and is grooved with a wide groove width when the grooving load is small. The paddy field working machine according to claim 3, 4, or 7. 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 8, 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 constructed in 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.
The ground leveling float is equipped with a groove-growing device for drug application and the groove-growing device for fertilization.
The ground leveling float is formed so that the rear end is located behind the fertilizer-applying grooving device between the drug-applying grooving device and the fertilizer-applying grooving device. The paddy field working machine according to any one of claims 1 to 9, further comprising a unit.

Images