JP2017006153A - Paddy field work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reduction in a budding rate and seedling establishment rate due to burying of a seed and seedling falling due to planting failure by obtaining an effective chemical effect while reducing a chemical feeding amount.SOLUTION: The paddy field work machine includes a main work device, a fertilization device, and a chemical feed device for seeding or seedling planting, the devices operated in forward travel for working. The main work device includes plural main feed parts 26 feeding a seed or seedling to a field and aligned and disposed in a right/left direction at a fixed interval. The fertilization device includes plural fertilizer feed parts 31 feeding a fertilizer to the field and disposed and spaced apart from the corresponding main feed parts 26 at a predetermined interval in a machine body lateral width direction. The chemical feed device includes plural chemical feed parts 36 configured in a groove formation type so that a groove is formed on a mud face of the field by a groove formation tool 37 for chemical feed and a chemical is fed into the groove and disposed at the same positions as the corresponding main feed parts 26 in the machine body lateral width direction.SELECTED DRAWING: Figure 8

Description

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

  As the paddy field work machine as described above, for example, a fertilizer hopper (fertilizer storage part) and a feeding unit (fertilizer feeding part) of the fertilizer are installed at the rear of the traveling machine body (traveling vehicle body), and a seeding device (main work) Device), a plurality of groovers of a fertilizer, and a medicine spraying device (medicine device) are connected to the rear part of the traveling machine body through a vertically swinging link mechanism so as to be movable up and down, and a feeding unit at the rear part of the machine body There is a construction in which a plurality of fertilizer hoses are installed over each groover at the rear of the machine body (for example, see Patent Document 1).

JP 2013-201919 A

  In said structure, it became difficult to obtain a medicinal effect, although the chemical | medical agent amount increased by providing the chemical | medical agent spraying apparatus which spreads a chemical | medical agent over the whole work width of a paddy field machine. Therefore, in recent years, in order to effectively obtain a medicinal effect such as disease prevention and insect repellent for seeds or seedlings while reducing the amount of drug application, in the field mud surface near the planned seeding site or seedling planting site. It has been considered to adopt a groove-formation device for supplying a medicine into the groove by forming a groove with a groover for applying medicine.

  However, when grouting near the planned sowing site or seedling planting site on the field mud surface, if seeding or seedling planting is performed in a state where the filling groove is not sufficiently backfilled, seed burial will occur. Decrease in the emergence rate and seedling establishment rate, or the fall of seedlings due to poor planting, etc. are easily caused.

  In particular, when a direct sowing device is adopted as the main working device, and when seed pods that have been iron-coated to prevent bird damage are used as seeds, sowing is performed in a state where the backfilling of the dosing groove is insufficient. As a result, a decrease in the emergence rate and seedling establishment rate due to seed burial was noticeable.

  The purpose of the present invention is to effectively obtain a medicinal effect on seeds or seedlings while reducing the amount of medicines applied, and to reduce seedling emergence rate and seedling establishment rate due to seed burial, or fallen seedling due to poor planting, etc. Is to prevent.

The problem solving means of the present invention is:
A main working device for seeding or seedling planting that operates during forward traveling for work, a fertilizer device, and a medicinal device,
The main work device arranges and arranges a plurality of main supply parts that supply seeds or seedlings to the field at regular intervals in the left-right direction,
The fertilizer application device includes a plurality of fertilizer supply units that supply fertilizer to a farm field at a position on the front side of the body relative to the plurality of main supply units, and a predetermined interval from the corresponding main supply unit in the body width direction. Deployed in position,
The drug application device includes a plurality of drug supply units configured in a groove type to groove the mud surface of a field by a drug grooving device and supply the drug into the groove, rather than the plurality of fertilizer supply units. It is arranged at the same position in the width direction of the airframe with the corresponding main supply section at the front position.

  According to this means, it is possible to increase the distance in the front-rear direction of the machine body between each main supply unit and each drug supply unit arranged at the same position in the machine body width direction. Thereby, during the forward traveling for work, each preceding groove forming type medicine supply part forms a medicine groove, and each subsequent main supply part supplies seeds or seedlings to the medicine groove forming part. The time difference can be increased, and it is easy to secure the time required for the backfilling of the drug application groove from the time when each drug supply unit makes a groove to the time when each main supply unit supplies seeds or seedlings.

  That is, in order to make the seeds or seedlings easy to obtain medicinal effects, each main supply part and each grooved type chemical supply part are arranged at the same position in the horizontal direction of the aircraft, and the supply of seeds or seedlings in the horizontal direction of the aircraft Even if the position and the drug application position are set to be the same, the drug supply grooves formed by the respective drug supply units of the drug application device for the drug application until the main supply units of the subsequent main work devices supply seeds or seedlings. In the meantime, it can be backfilled with the mud flowing into the medicinal groove after passing through each chemical supply section, and seeds or seedlings can be supplied to the field mud at the place where the medicinal groove is filled back.

  As a result, seedling or seedling supply due to insufficient filling back of each dosing groove causes a decrease in the emergence rate and seedling establishment rate due to seed burial, or the occurrence of seedling collapse due to poor planting Can be prevented.

  Moreover, it can prevent that the chemical | medical agent supplied to each chemical | medical agent groove | channel spread | diffused in a wide area and the medicinal effect weakens due to the backfill defect of each chemical | medical agent groove | channel.

  Therefore, appropriate field supply of seeds or seedlings and medicines can be performed with high accuracy, thereby making it possible to effectively obtain the medicinal effects on seeds or seedlings while reducing the amount of drug applied. Decrease in the germination rate and seedling establishment rate due to the burial of the seedling, or fallen seedling due to poor planting can be prevented, and as a result, the growth of seedlings can be promoted.

As one of the means for making the present invention more suitable,
A plurality of medicine covering soil members for refilling each of the medicine grooves formed by the plurality of medicine supply sections are arranged between the medicine supply section and the main supply section arranged in the front-rear direction.

  According to this means, it is possible to guide the field mud pushed out in the left-right direction along with the groove formation of each medicine supply section performed during the forward traveling for work to each medicine groove by each subsequent medicine covering soil member. .

  As a result, when the mud in the field is hard and difficult to flow into the drug application groove, or after the preceding drug supply unit has formed a groove with a high work speed, the subsequent main supply unit supplies seeds or seedlings. Even in the case where it is difficult to secure the time required for the backfilling of the medicinal groove, the backfilling of each medicinal groove can be performed quickly and reliably.

  As a result, regardless of the hardness and work speed of the field mud, the seed emergence rate and seedling establishment rate due to seed burial caused by the supply of seeds or seedlings with insufficient backfilling of each drug application groove Generation | occurrence | production of fall or the seedling fall by planting failure can be prevented. Moreover, it can prevent that the chemical | medical agent supplied to each chemical | medical agent groove | channel spread | diffused in a wide area and the medicinal effect weakens due to the backfill defect of each chemical | medical agent groove | channel.

  Therefore, it is possible to accurately supply appropriate fields of seeds or seedlings and drugs regardless of the hardness and work speed of the field mud, thereby effectively improving the medicinal effects on seeds or seedlings while reducing the amount of the drug. In addition to being able to be obtained, it is possible to prevent a decrease in the emergence rate and seedling establishment rate due to seed burying, or a seedling collapse 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 parts is configured in a groove-growing type in which the fertilizer is applied to the mud surface of the field by using a fertilizer for supplying fertilizer.
A plurality of fertilizer covering soil members that backfill each of the fertilization grooves formed by the plurality of fertilizer supply sections;
The plurality of drug covering soil covering members extend in a slanting rearwardly inclined posture toward the medicine groove to be backfilled from the first fixing portion provided on the side opposite to the fertilizer groove adjacent to the medicine groove to be backfilled,
The plurality of soil covering members for fertilization extend from the second fixing portion provided on the opposite side to the fertilizer groove adjacent to the fertilizer groove to be backfilled in a slanting backward inclined posture toward the fertilizer groove to be backfilled.

  According to this means, the farmland mud pushed out to the first fixed part side among the farmland mud pushed out in the left and right direction along with the groove formation of each medicine supply part performed at the time of forward traveling for work, It can guide to each medicine groove by medicine covering soil member.

  As a result, when the mud in the field is hard and difficult to flow into the drug application groove, or after the preceding drug supply unit has formed a groove with a high work speed, the subsequent main supply unit supplies seeds or seedlings. Even in the case where it is difficult to secure the time required for the backfilling of the medicinal groove, the backfilling of each medicinal groove can be performed quickly and reliably.

  Further, each of the subsequent fertilization covering soils, such as the field mud pushed out to the second fixed part side among the field mud pushed out in the left-right direction along with the groove formation of each fertilizer supply part performed during the forward traveling for work. Each member can be guided to each fertilization groove.

  Thereby, even when the mud in the field is hard and difficult to flow into the fertilizer groove, the fertilizer groove can be backfilled promptly and reliably.

  As a result, regardless of the hardness and work speed of the field mud, the seed emergence rate and seedling establishment rate due to seed burial caused by the supply of seeds or seedlings with insufficient backfilling of each drug application groove Generation | occurrence | production of fall or the seedling fall by planting failure can be prevented. Further, it is possible to prevent the medicine or fertilizer supplied to each medicine groove or each fertilization groove from spreading to a wide area due to poor filling back of each medicine groove and each fertilization groove, and the medicinal effect or fertilization effect can be prevented from weakening. .

  Therefore, it is possible to accurately supply seeds or seedlings and appropriate fields of chemicals and fertilizers regardless of the hardness and working speed of the field mud, thereby reducing the amount of medicines and fertilizers and reducing seeding and seedlings. In addition to being able to effectively obtain medicinal and fertilizing effects, it is possible to prevent seedling seedling fall due to seed burial or decline in seedling emergence rate or seedling fallen due to poor planting. It is possible to promote the development.

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 so that it can swing up and down,
Each of the plurality of fertilizer supply sections is configured as a groove-growing type in which the fertilizer is applied to the mud surface of the field and fertilizer is supplied into the groove, and the leveling float is swung in a side view. The leveling float is equipped with an arrangement that overlaps the fulcrum.

  According to this means, the leveling float equipped to be able to swing up and down for leveling the field mud surface can also be used as a support member for supporting each fertilizer supply section. And while using the leveling float as a support member in this way, the fertilization depth by each fertilizer supply part can be made constant with high accuracy regardless of the vertical swing of the 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 medicine supply units is arranged at a front end side portion where the bottom surface of the leveling float is warped.

  According to this means, the leveling float can be used also as a support member for supporting each medicine supply unit. And while using the leveling float as a support member in this way, it is possible to increase the distance in the front-rear direction of each main supply part and each drug supply part. Then, it becomes easy to secure the time required for the backfilling of the medicinal groove after each main supply unit supplies seeds or seedlings.

  Therefore, budding by seed burial due to the supply of seeds or seedlings by each main supply unit in a state where the backfilling of each drug application groove is insufficient while simplifying the configuration by reducing the number of parts It is possible to prevent a decrease in the rate and seedling establishment rate, 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 to level the mud surface of the field so that it can swing up and down,
Each of the plurality of medicine supply units is mounted on the leveling float so as to overlap with the rocking fulcrum of the leveling float in a side view.

  According to this means, the leveling float equipped to be able to swing up and down for leveling the field mud surface can also be used as a support member for supporting each drug supply unit. And while using the leveling float as a support member in this way, the drug application depth by each chemical 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 application 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 parts is configured in a groove-growing type in which the fertilizer is applied to the mud surface of the field by using a fertilizer for supplying fertilizer.
Each of the fertilizer groovers includes a grooving assisting tool that extends forward from the front end thereof to assist grooving by the fertilizer groovers,
Each of the plurality of medicine supply units is arranged at a position where a rear end portion of the medicine-growing device is overlapped with a front end portion of the groove-making aid in a side view.

  According to this means, each fertilizer supply section and each medicine supply section are arranged in such a manner that their groove-growers are arranged close to the left and right. It is possible to prevent mud clogging between them, and it is possible to prevent defective groove formation due to this mud clogging and defective backfilling of each drug application groove and each fertilization groove.

  In addition, among the field mud pushed out in the left-right direction along with the groove formation of each drug supply unit performed at the time of forward traveling for work, the field mud pushed out to the fertilizer supply unit side is subsidized. It can be guided to the rear side of the aircraft by the tool, and the guided field mud, along with the field mud pushed out to the application groove side of the field mud pushed out in the left and right direction along with the groove of each fertilizer supply section, It can be made to flow toward each medicine groove.

  Therefore, it is possible to more quickly backfill each drug groove, and more effectively prevent seeds or seedlings from being supplied by each main supply unit in a state where the backfill of each drug groove is insufficient. be able to.

As one of the means for making the present invention more suitable,
Each of the groove forming devices is configured to be elastically deformable in the groove width direction so that a groove is formed with a narrow groove width when the groove forming load is increased and a groove is formed with a wide groove width when the groove forming load is decreased. ing.

  Groove load increases as the mud in the field is harder and decreases as it is softer. Also, the higher the working speed, the larger, and the slower the working speed, the smaller.

  For this reason, according to this means, the application groove or fertilization to be grooved by each grooving device is such that it becomes difficult to backfill each application groove or each application groove due to the fact that the field mud is hard or the working speed is high. The groove width of the groove becomes narrower, and accordingly, it becomes easier to back-fill each drug application groove or each fertilization groove.

  As a result, regardless of the hardness and work speed of the field mud, the seed emergence rate and seedling establishment rate due to seed burial caused by the supply of seeds or seedlings with insufficient backfilling of each drug application groove Generation | occurrence | production of fall or the seedling fall by planting failure can be prevented. In addition, it is possible to prevent the medicine or fertilizer supplied to each medicine groove or each fertilization groove from being diffused in a wide area and weakening the medicinal effect or fertilization effect due to poor backfilling of each medicine groove or each fertilization groove. .

  On the other hand, the width of the groove to be grooved by each grooving device becomes wider as it becomes easier to backfill each groove or fertilizer groove due to the softness of the field mud and the slow traveling speed. Therefore, it is possible to lengthen the time required for the backfilling of each drug application groove or each fertilization groove.

  As a result, even when mud in the field is soft and easy to flow into each dosing groove or each fertilizing groove, or when the work speed is slow and each dosing groove or each fertilizing groove is grooved, backfilling is performed immediately. The predetermined time required for the backfilling of each drug application groove or each fertilization groove can be secured.

  As a result, regardless of the hardness and work speed of the field mud, each groove was backfilled from the middle of the supply of the drug or fertilizer into each groove by each drug supply section or each fertilizer supply section. Diffusion of the drug or fertilizer from each groove can be prevented.

  Then, each of the groovers is elastically deformed in the groove width direction according to the grooving load, so that mud, chemicals, or fertilizer attached to the groovers can be automatically removed from the groovers. Thereby, it is possible to prevent poor application or poor fertilization due to mud, chemicals, or fertilizer being deposited and deposited on the grooving device.

  Therefore, regardless of the hardness of the field mud and the working speed, the appropriate field supply of seeds or seedlings and chemicals or fertilizers can be performed with high accuracy, thereby effectively obtaining a medicinal effect or fertilization effect on the seeds or seedlings. In addition, it is possible to prevent a decrease in the emergence rate and seedling establishment rate due to seed burying, or a seedling collapse 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 producing devices includes a first member that is not elastically deformable and a second member that is elastically deformable in the groove width direction, and the first member is disposed inside the second member, and the groove width The elastic deformation of the second member in the direction of narrowing is limited by contact with the first member.

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

  Therefore, even if the grooving load becomes too large due to the fact that the field mud is hard or the work speed is high, the minimum groove width necessary for applying or fertilizing is ensured by the grooving of each grooving device. It is possible to perform appropriate medicine or fertilization.

As one of the means for making the present invention more suitable, equipped with a leveling float for leveling the mud surface of the field,
The plurality of fertilizer supply parts are configured in a groove-growing type for supplying fertilizer into the grooves by grooving on the mud surface of the field by a fertilizer grooving device,
Equipped with the grooving device for the medicinal application and the grooving device for fertilization to the leveling float,
The leveling float is formed between the groover for applying fertilizer and between the groover for fertilizing, so that the rear end is located behind the groover for fertilizing. Department.

  According to this means, the leveling float can be used as a support member that supports each drug supply unit and each fertilizer supply unit.

  In addition, the field mud that has entered the lower part of the leveling float as the work travels is pushed out to the left and right of the grooving device for medicine by the grooving of the grooving medicine for traveling, and for fertilization. Even if it becomes easy to concentrate and float between the grooving device for fertilization and the grooving device for fertilization by being pushed to the left and right of the grooving device for fertilization by the grooving of By the action of the inter-groove leveling part located between the two, the field mud can be prevented from being lifted from between the drug-growing device and the fertilizer-grooving device.

  This prevents the field mud from floating between the grooving device for fertilization and the fertilizer for fertilization, and prevents the leveling performance from deteriorating due to the floating field mud riding on the leveling float. Can do.

It is a left view of a riding direct sowing machine. It is a top view of a riding direct sowing machine. It is a left view of a work unit. It is a vertical left side view of a work unit. It is a rear view of a work unit. It is a vertical rear view of the work unit which shows the composition of a fertilizer applicator. It is a vertical back view of the work unit which shows the structure of a prescription apparatus. It is a cross-sectional top view of the work unit which shows arrangement | positioning of a seed supply part, a fertilizer supply part, and a chemical | medical agent supply part. It is a vertical side view of the principal part which shows arrangement | positioning of a fertilizer supply part and a chemical | medical agent supply part. It is a vertical side view of the principal part which shows the support structure of the left and right leveling float. It is a disassembled perspective view of the principal part which shows the support structure of the left and right leveling float. It is the schematic which shows the transmission structure of a work unit. It is a vertical side view of the principal part which shows the interlocking structure etc. of a direct sowing apparatus and a prescription apparatus. It is a cross-sectional top view of the principal part which shows the interlocking structure etc. of a direct sowing apparatus and a prescription apparatus. It is a vertical side view of the principal part which shows the structure of the fertilizer supply part and chemical | medical agent supply part in another embodiment. It is a cross-sectional top view of the principal part which shows the structure of the fertilizer supply part and chemical | medical agent supply part in another embodiment. It is a cross-sectional top view of the principal part which shows the shape of the 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 riding direct sowing machine that is an example of a paddy field work machine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the riding direct sowing machine exemplified in the present embodiment is a lifting cylinder 2 that employs a single-acting hydraulic cylinder at the rear of a traveling vehicle body 1 configured in a riding type four-wheel drive type. The working unit A for seeding is connected so as to be movable up and down through a vertically swinging link mechanism 3 that swings up and down by the operation of.

  The traveling vehicle body 1 includes a hydrostatic continuously variable transmission (not shown) provided as a main transmission and a gear-type transmission provided as a sub-transmission with power from an engine 4 mounted on the front thereof in a vibration-proof manner. Via a device (not shown), etc., it is configured to transmit to the left and right front wheels 5 provided at the front part thereof and to the left and right rear wheels 6 provided at the rear part thereof. On the rear side of the traveling vehicle body 1, a boarding step 10, a steering wheel 8 for front wheel steering, a driver seat 9 whose position can be adjusted in the front-rear direction, and the like are provided to form a boarding driver 10. Left and right expansion steps 11 for extending the boarding area to the left and right are provided on the left and right of the traveling vehicle body 1. Behind the boarding operation part 10 is a rear step 12 extending from the rear part 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. A handrail 13 is provided for use.

  As shown in FIGS. 1 to 5, the work unit A is provided with a 6-row direct sowing device 15 as a main working device for seeding and a fertilizer on a sowing frame 14 that is connected to the rear end portion of the link mechanism 3 in a rollable manner. 6 fertilizers 16 to be fed to the field, 6 strips to be fed to the field 17, gears 18 to be transmitted to each of the devices 15 to 17, and the field mud surface to be worked during forward traveling for work The unit is equipped with three T-shaped leveling floats 19 in a plan view for leveling, and left and right groove cutting tools 20 that form drainage grooves in the field as the vehicle advances forward for work.

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

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

  As shown in FIGS. 1 to 5 and FIG. 8, the direct sowing apparatus 15 stores the left and right seed reservoirs that store seed pods for every three strips as a main storage section that stores the seed pods that have been subjected to the iron coating process as an example of seeds. Part 24, six seed feeding parts 25 as main feeding parts that intermittently feed a predetermined amount of seed potatoes downward from corresponding seed storage parts 24, and seed pods that corresponding seed feeding parts 25 have fed downward There are provided six seed supply units 26 as main supply units that drop and supply the field mud surface after leveling located just below the feeding unit 25. Then, when the various child feeding parts 25 are operated by the working power from the traveling vehicle body 1 transmitted through the external transmission shaft 27 and the transmission device 18 and the like, a predetermined amount of seed potatoes are provided in the front-rear direction. It is configured as a muddy surface point seeding method for six strips where seeding for a maximum of six strips is carried out on the mud surface of the field with a predetermined interval.

  In the direct sowing device 15, the left and right seed reservoirs 24 have three seed discharge ports (not shown) aligned at the left and right sides at regular intervals. And the seed supply part 25 is connected with each of the seed discharge port formation location in the various child storage part 24. FIG. Each seed feeding unit 25 has a seed supply unit 26 connected to each of the lower end portions on the seed discharge side. Then, the left and right seed reservoirs 24 are arranged at predetermined intervals in the left-right direction so that the various child supply units 26 are aligned with the corresponding seed feed-out units 25 and the seed discharge ports with a certain interval in the left-right direction. Open and deployed.

  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 that store granular fertilizers, which are an example of fertilizer, for every three strips, and the corresponding fertilizer storage unit 28. 6 fertilizer feeding sections 29 to be fed out, six fertilizer hoses 30 as fertilizer guide pipes for guiding the fertilizer fed out by the corresponding fertilizer feeding section 29, and fertilizer guided by the corresponding fertilizer feeding hoses 30 to the field Six fertilizer supply sections 31 are provided. And each fertilizer supply part 29 act | operates with the motive power from the driving | running | working vehicle body 1 transmitted via the external transmission shaft 27, the transmission device 18, etc., and a predetermined amount of fertilizer is spaced apart in the front-back direction. It is configured for 6 strips where fertilizer is applied for a maximum of 6 strips.

  The left and right fertilizer reservoirs 28 are formed with three fertilizer outlets (not shown) at their lower ends aligned at regular intervals in the left-right direction. And the fertilizer supply part 29 is connected with each of the fertilizer discharge port formation location in each fertilizer storage part 28. As shown in FIG. Each fertilizer supply unit 29 is configured to be arranged at a predetermined interval in the left-right direction in a state where it is connected to the corresponding fertilizer storage unit 28.

  Each fertilizer supply part 31 is constituted by a groove-growing type in which the fertilizer is formed in a field mud surface after leveling by a fertilizer-grooving device 32 formed in a U-shape in plan view that opens the rear and feeds the fertilizer into the groove. doing. And the front end side part of the corresponding leveling float 19 so that it may be located in the position ahead of the body from the corresponding seed supply part 26, and the position spaced apart from the corresponding seed supply part 26 in the horizontal direction of the body. Is fixedly mounted on the left and right center of the left and right overhang area.

  The medicinal device 17 is configured to intermittently administer a predetermined amount of medicine from three medicine reservoirs 33 that store medicines such as powdered herbicides and disease preventives, which are examples of medicines, two by two, and corresponding medicine reservoirs 33. 6 medicine delivery sections 34 that are fed out, 6 medicine hose 35 as medicine guide pipes that guide the medicine delivered by the corresponding medicine delivery section 34, and the medicine guided by the corresponding medicine hose 35 are supplied to the field 6 drug supply units 36, and the like. And each medicine supply part 34 act | operates with the motive power from the driving | running | working vehicle body 1 transmitted via the external transmission shaft 27, the transmission device 18, etc., and a predetermined amount of chemical | medical agents is spaced apart in the front-back direction. In this state, it is configured for 6 articles that apply a maximum of 6 articles.

  Each medicine reservoir 33 has two medicine outlets (not shown) at the lower end thereof arranged in the left-right direction at a predetermined interval. And the medicine delivery part 34 is connected with each of the medicine discharge port formation location in each medicine storage part 33. Each medicine supply section 34 is configured to be arranged at a predetermined interval in the left-right direction in a state where it is connected to the corresponding medicine storage section 33.

  Each medicine supply unit 36 is configured in a grooved manner to form a groove on the field mud surface after leveling by using a groover 37 for medicine application formed in a U-shape in plan view that opens the rear, and supplies the medicine into the groove. doing. Then, the left and right overhangs of the corresponding leveling float 19 described above are positioned at the front side of the body relative to the corresponding fertilizer supply unit 31 and at the same position in the lateral width direction of the body with the corresponding seed supply unit 26. Fixed to the left and right outer edges of the area.

From the above configuration, during the forward traveling for work with the work unit A activated, first, the leveling floats 19 level the field mud surface to be worked along with the traveling.
Next, the field mud surface after leveling by each leveling float 19 in a state where each drug supply unit 36 of the prescription device 17 precedes each child supply unit 26 of the direct seeding device 15 and each fertilizer supply unit 31 of the fertilizer application device 16. The medicine supply groove is formed at the same position in the machine body width direction with respect to the sowing planned place of the various child supply parts 26 in the medicine supply, and the medicines supplied by the medicine supply parts 34 of the medicine application device 17 are supplied into the medicine supply grooves.
In addition, each fertilizer supply unit 31 of the fertilizer application device 16 is preceded by the various child supply units 26 of the direct sowing device 15, from the planned seeding locations of the various child supply units 26 on the field mud surface after the leveling by each leveling float 19. Fertilizer grooves are formed at predetermined intervals in the machine body width direction, and fertilizers fed by the respective fertilizer feeding sections 29 of the fertilizer application device 16 are supplied into the fertilizer grooves.
Then, each child supply part 26 of the direct sowing apparatus 15 supplies each medicine on the field mud surface after the medicine is applied by each medicine supply part 36 of the medicine application apparatus 17 and after fertilization by each fertilizer supply part 31 of the fertilizer application apparatus 16. At the same position in the width direction of the machine body with respect to the drug application location of the part 36, the seed pods fed by the various child feeding parts 25 of the direct seeding device 15 are dropped and supplied.

  And in this work unit A, each child supply part 26 of the direct sowing apparatus 15, each fertilizer supply part 31 of the fertilizer application apparatus 16, and each medicine supply part 36 of the medicine application apparatus 17, each medicine supply part 36 supplies various child. By arranging the fertilizer supply units 31 between them in an arrangement located on the front side of the machine body relative to the unit 26, the various child supply units 26 and the drug supply units 36 are separated in the longitudinal direction of the machine body. The distance can be increased. As a result, during the forward traveling for work, the time difference from when the preceding groove forming type drug supply section 36 forms the drug application groove to when the subsequent various child supply sections 26 seed at the position of the drug application groove formation. It is easy to secure the time required for the backfilling of the drug application groove between the time when each drug supply unit 36 makes grooves and the time when each child supply unit 26 seeds.

  That is, in order to make it easy to obtain the medicinal effect of the seed pods, the mud surface seeding type child supply unit 26 and the groove forming type drug supply unit 36 are arranged at the same position in the aircraft lateral width direction, Even if the sowing position and the pouring position are set to be the same, the various feeding parts 26 of the direct seeding device 15 until the seeding groove formed by the respective medicine supply parts 36 of the prescription device 17 for the sowing is seeded. In the meantime, it can be backfilled with the mud flowing into the medicine groove after passing through each medicine supply section 36 and can be seeded on the mud surface at the place where the medicine groove is filled back.

  As a result, seeding with iron coating treatment can be prevented from being buried due to seeding in a state where the backfilling of each dosing groove is insufficient. A decrease in rate can be prevented.

  Moreover, it can prevent that the chemical | medical agent supplied to each chemical | medical agent groove | channel spread | diffused in a wide area and the medicinal effect weakens because the backfilling of each chemical | medical agent groove | channel becomes inadequate.

  Further, in this work unit A, the grooving type fertilizer supply units 31 and the grooving type chemical supply units 36 are arranged so as to be displaced in the front-rear direction of the machine body, thereby arranging them side by side in the vicinity. It is possible to prevent mud clogging between the fertilizer grooving device 32 and the grooving device 37 for drug application, which are generated when deployed.

  As shown in FIGS. 3, 4, and 8, each of the fertilizer applicators 32 and each of the fertilizer applicators 37 extends forward from the front end of each of the fertilizer applicators 32 and 37. The grooving assisting tools 38 and 39 for assisting the grooving are connected. Each of the groove forming aids 38 and 39 is formed to have a bottom surface that warps upward toward the front end side. Thereby, the groove formation by each groove generator 32 and 37 can be smoothly performed with little resistance.

  As shown in FIGS. 3 to 5 and FIGS. 9 to 11, each leveling float 19 has a front end side portion that has the above-described left and right overhang regions in order to improve leveling performance with respect to the unevenness of the field mud surface. It is formed to have a warped shape. Further, the metal brackets 68 provided at the front and rear intermediate portions thereof are supported on the three float support members 40 that are dispersedly arranged at regular intervals in the left-right direction below the main frame 21 in the sowing frame 14. By connecting via a shaft 41, the lower part of the sowing frame 14 is mounted so as to be able to swing up and down. And the corresponding fertilizer supply part 31 is supported by the arrangement | positioning which overlaps with the left-right direction support shaft 41 which is the rocking | fluctuation fulcrum of the leveling float 19 in the side view in them. Moreover, the corresponding chemical | medical agent supply part 36 is supported in the front-end side part from which the bottom face in them curves.

  Thereby, each leveling float 19 can be used also as a support member which supports each fertilizer supply part 31 and each chemical | medical agent supply part 36, and simplification of the structure by reduction of a number of parts can be aimed at. And while using each leveling float 19 as a support member in this way, the fertilization depth by the fertilizer application 16 can be made constant with high accuracy regardless of the vertical swing of each leveling float 19. In addition, while effectively utilizing the longitudinal length of each leveling float 19, the distance between each fertilizer supply unit 31 and each drug supply unit 36 in the longitudinal direction of the machine body can be increased. The separation distance between the supply unit 26 and each medicine supply unit 36 in the longitudinal 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 forms grooves and the time when each child supply unit 26 seeds.

  As shown in FIGS. 3, 4, 8, and 9, each medicine supply unit 36 includes a fertilizer groover 37 for fertilization that is provided behind the respective fertilizer groovers 37. Is provided at a position overlapping the front end portion of the grooving aid 38 provided in FIG.

  As a result, out of the field mud pushed out in the left-right direction along with the groove formation of each drug supply unit 36 performed during the forward traveling for work, the field mud pushed out to the fertilizer supply unit side is changed to each subsequent application for fertilization. Field that can be guided to the rear side of the machine body by the groove assisting tool 38, and the guided field mud is pushed out to the side of the application groove of the field mud pushed out in the left-right direction along with the groove formation of each fertilizer supply unit 31. Along with mud, etc., it can be made to flow toward each drug application groove. As a result, backfilling of each drug groove can be performed more quickly, and seeding can be more effectively prevented from being performed in a state where the backfill of each drug groove is insufficient.

  As shown in FIGS. 3 to 5 and FIG. 8, each leveling float 19 includes left and right medicine covering soil members 42 for leveling by filling back each of the medicine grooves formed by the left and right medicine supply units 36 provided therein. It is provided so that it may be located between the medicine supply part 36 and the seed supply part 26 which are located in a line. Moreover, the left and right fertilizer covering soil members 43 are provided to backfill each of the fertilizer grooves formed by the left and right fertilizer supply sections 31 provided for them.

  The respective covering soil covering members 42 are refilled from the outer end portions 19A of the left and right overhanging regions in the respective leveling floats 19 serving as the first fixing portions provided on the side opposite to the fertilizing grooves adjacent to the respective filling grooves to be backfilled. It extends in the slanting posture in the obliquely rearward direction so that the extension end side reaches the medicine groove for backfilling toward the medicine groove.

  Thus, each of the subsequent field mud pushed out to the lateral outer side of each leveling float 19 among the field mud pushed out in the left-right direction along with the groove formation of each medicine supply unit 36 performed at the time of forward traveling for work, The medicine covering soil member 42 can guide each medicine groove. As a result, when the mud in the field is hard and difficult to flow into the drug application groove, or when the work speed is high and each preceding drug supply unit 36 forms a groove until the subsequent various child supply units 26 seed the drug application Even when it is difficult to secure the time required for groove backfilling, each drug groove can be backfilled quickly and reliably, and seeding is performed with insufficient backfill of each drug groove. This can be prevented more reliably.

  Each fertilizer covering soil member 43 is directed toward the fertilization groove to be backfilled from the rear portion 19B of each leveling float 19 serving as a second fixing portion provided on the side opposite to the fertilizer groove adjacent to each fertilization groove to be backfilled. It extends in a slanting-backward-facing posture so that the extending end side of the reaches the filling groove for backfilling.

  Thereby, the field mud pushed out to the left and right center side of each leveling float 19 of the field mud pushed out in the left and right direction along with the groove formation of each fertilizer supply unit 31 performed during forward traveling for work is followed. Each fertilizer covering soil member 43 can guide each fertilizer groove. As a result, even when the mud in the field is hard and difficult to flow into the fertilizer grooves, it is possible to quickly and reliably backfill each fertilizer groove, resulting in insufficient backfill of each fertilizer groove. And it can prevent that the fertilizer supplied to each fertilizer ditch spreads in a wide area, and a fertilization effect weakens.

  As shown in FIGS. 9 to 11, the work unit A is provided with a groove cutting tool 20 at the rear part on the rear side of the machine body with respect to the left and right support shafts 41 in the left and right leveling floats 19 provided on the left and right ends. . On the other hand, in the sowing frame 14, the left and right float support members 40 that support the left and right leveling float 19 provided with the groove cutting tool 20 are arranged on the front side of the front part of the bracket 68 provided in the corresponding leveling float 19. Ascending restriction portion 40A is provided for restricting upward swing from the basic posture of the corresponding leveling float 19 by contact with the side. The main frame 21 is connected to the rear ends 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 in the corresponding leveling float 19. A descent prevention unit 21B that prevents descent swinging from the basic posture of the corresponding leveling float 19 by contact is provided.

  In other words, by providing the left and right float support members 40 with the rise restricting portions 40A, it is possible to prevent the occurrence of poor leveling due to the right and left leveling floats 19 swinging up and down greatly. In addition, since the left and right float support portions 21A of the main frame 21 are provided with the lowering prevention portions 21B, the drainage grooves are formed due to the rise of the groove cutting tool 20 as the left and right leveling floats 19 are moved downward. Defects can be prevented.

  As shown in FIGS. 1 to 5, the work unit A is provided with left and right fertilizer storage sections 28 that store the fertilizer with the largest consumption per unit area on the front side, and on the rear side, the unit per unit area. The left and right seed reservoirs 24 that store the seed pods with the second highest consumption are arranged, and the space between the left and right seed reservoirs 24 and the left and right fertilizer reservoirs 28 is the most consumed per unit area. Three drug storage portions 33 having a narrow front and rear width for storing a small amount of drug are provided.

That is, the fertilizer supply to each fertilizer storage section 28 is performed by deploying each fertilizer storage section 28 storing the fertilizer with the largest consumption per unit area on the front side of the work unit A on the traveling vehicle body side. It can be easily performed from the traveling vehicle body 1 without getting off the traveling vehicle body 1.
Moreover, various child storage parts 24 are arranged on the rear side of the working unit A, which is the rear end side of the riding direct sowing machine, by storing various child storage parts 24 for storing seed potatoes whose consumption per unit area is the second highest after fertilizer. It is possible to easily replenish seeds 24 with respect to the rear of the aircraft.

  As described above, each fertilizer storage section 28 is arranged on the front side of the machine body relative to each drug storage section 33, whereas each fertilizer supply section 31 is placed on the rear side of the machine body from each drug supply section 36 as described above. By deploying, each fertilization hose 30 and each medicine hose 35 over which the corresponding ones cross each other in a side view.

  As shown in FIGS. 3 to 7, each child storage unit 24 includes a seed hopper 24 </ b> A having a seed replenishing port at the upper end and a seed hopper lid 24 </ b> B for opening and closing the seed replenishing port. Each fertilizer storage unit 28 includes a fertilizer hopper 28A having a fertilizer supply port at the upper end portion, and a fertilizer hopper lid 28B that opens and closes the fertilizer supply port. Each medicine storage unit 33 includes a medicine hopper 33A having a medicine supply port at the upper end, and a medicine hopper lid 33B that opens and closes the medicine supply port.

  The direct sowing apparatus 15 supports the various child feeding parts 25 on the low rear support frame 23 described above, so that the various child storage parts 24 connected to the upper ends of the corresponding seed feeding parts 25 are in front of the height. The support frame 22 is configured to be lower than the upper end. Moreover, the lid 24B for various child hoppers opens the seed replenishing port of the corresponding seed hopper 24A by swinging forward and closes the seed replenishing port of the corresponding seed hopper 24A by swinging backward. It is configured to swing back and forth. Thereby, the replenishment of the seed potatoes from the rear of the machine body to the various child storage units 24 can be facilitated.

  The medication apparatus 17 supports each medicine delivery part 34 on the upper part of the above-mentioned tall front support frame 22 so that the whole medicine storage part 33 connected to the upper end of the corresponding medicine delivery part 34 stores various children. It is configured to be positioned above the upper end of the portion 24. Also, the lid 33B for each medicine hopper opens the medicine supply port of the corresponding medicine hopper 33A by swinging forward, and closes the medicine supply port of the corresponding medicine hopper 33A by swinging backward. It is configured to swing back and forth. Furthermore, each medicine hopper 33A is configured such that an upper end portion provided with a medicine supply port is inclined downward. Thereby, the replenishment of the medicine from the rear of the machine body to each medicine storage section 33 can be easily performed without being obstructed by the various child storage sections 24 and using the various child storage sections 24 for the mounting table. .

  The fertilizer application device 16 is configured so that 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 positioned above the respective drug storage unit 33. Each fertilizer reservoir 28 is configured to be positioned at the top of the work unit A by being supported by the upper end. When the work unit A is raised to the upper limit position, the fertilizer supply port formed at the upper end portion of each fertilizer hopper 28A is configured to approach the upper end portion of the handrail 13 provided at the rear portion of the traveling vehicle body 1. doing. Further, the fertilizer supply port of the corresponding fertilizer hopper 28A is opened by the forward swing displacement of the cover 28B for each fertilizer hopper, and the fertilizer supply port of the corresponding fertilizer hopper 28A is closed by the forward swing displacement. It is configured to swing back and forth. Thereby, the fertilizer supply with respect to each fertilizer hopper 28A can be easily performed from the traveling vehicle body 1, and it can further make it easier by raising the work unit A to an upper limit position.

  And in said structure, by arrange | positioning each storage part 24,28,33 arranged side by side in the work unit A so that the arrangement | positioning height may become so low that it is located in the rear part side of the work unit A, The position of the center of gravity of the work unit A can be moved toward the traveling vehicle body. Thereby, the stability of the weight balance as a riding direct seeder can be improved.

  Moreover, since each fertilizer supply part 29 of the fertilizer application | coating apparatus 16 and each chemical | medical agent supply part 34 of the prescription apparatus 17 are supported by the front support frame 22, the support frame only for a fertilizer supply part and the support frame only for a chemical | medical agent supply part are provided. The configuration can be simplified by reducing the number of parts as compared with the case where they are provided individually.

  As shown in FIGS. 3 and 4, the work unit A includes a first holding tool 44 that holds the corresponding seed hopper lid 24 </ b> B in a rearward tilted posture that opens the seed replenishing port, and a corresponding medicine hopper. And a second holder 45 that holds the lid 33B for use in a tilted posture that opens the medicine supply port.

  Each first holder 44 is configured in a hook-and-loop 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. . Each of the second holding tools 45 is configured by 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 medicine cover hopper lid 33B. ing.

  Although the various child storage parts 24 are provided with the cover body 24B that opens and closes the seed replenishment port by swinging back and forth, the various child storage parts 24 are brought closer to the drug storage parts 33. Can be deployed at In addition, each medicine storage section 33 includes a lid 33B that opens and closes the medicine supply port by swinging back and forth, but each medicine storage section 33 and each child storage section 24 are brought closer to the fertilizer storage section 28. It can be deployed in the front position. As a result, the position of the center of gravity of the work unit A can be brought closer to the traveling vehicle body, and the weight balance of the entire riding direct sowing machine can be improved.

  As shown in FIGS. 3, 4, and 7, the prescription device 17 is configured so as to drop and feed the seed pods 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 unit 36 corresponding to a position substantially directly below each drug delivery unit 34 is provided for the device 15, and each of the medication hoses 35 extending from the corresponding drug delivery unit 34 to the drug supply unit 36 is suspended in a substantially straight line. By adopting the configuration, the sowing position of the direct sowing apparatus 15 and the prescription position of the prescription apparatus 17 in the longitudinal direction of the machine body can be easily matched.

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

  That is, since the various child feeding parts 25 of the direct seeding device 15 and the respective drug feeding parts 34 of the drug application device 17 are interlocked at low speed by the low speed power via the low speed transmission system 48, the seeds by the various child feeding parts 25 of the direct seeding device 15 are used. It becomes easy to match the delivery timing of the medicine and the delivery timing of the medicine by each medicine delivery section 34 of the medication device 17. Thereby, it becomes easy to match | combine the sowing position of the direct sowing apparatus 15 with the prescription direction of the prescription apparatus 17 in the front-back direction of the body. And since it becomes easy to match | combine the seeding position in the front-back direction of a body, and a medicine application position, it becomes possible to supply a small amount of chemical | medical agents stably to the seed vase. As a result, it is possible to effectively obtain medicinal effects such as disease prevention and insect repellent against seed pods while reducing the amount of the applied medicine.

  When the fertilizer feeding unit 29 of the fertilizer application device 16 and the medicine feeding unit 34 of the medication application device 17 are interlocked, the seeding position of the direct seeding device 15 and the medication application position of the medication device 17 in the longitudinal direction of the machine body are matched. The required speed reduction structure can be made unnecessary, whereby the configuration of the transmission device 18 can be simplified.

  As shown in FIGS. 3 to 7 and FIGS. 12 to 14, in the transmission device 18, the low speed transmission system 48 includes a chain speed reduction mechanism 51 that decelerates the power from the power distribution shaft 47, and a speed after deceleration from the chain speed reduction mechanism 51. Left and right first relay shaft 52 for extracting power, six first fraction clutches 53 provided on first relay shaft 52, and six first fraction clutches 53 transmitted from corresponding first fraction clutch 53 to seed feeding unit 25. 1 gear type transmission mechanism 54, etc. are provided.

  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 positive rotation motion. , A second relay shaft 57 in the left-right direction for taking out the positive rotational motion after the conversion by the second conversion mechanism 56 as the positive rotational power, the three second fraction clutches 58 provided in the second relay shaft 57, and the second Three second gear transmission mechanisms 59 that transmit from the fractional clutch 58 to the corresponding two fertilizer feeding portions 29 are provided.

  Each interlocking mechanism 50 converts the rotational motion of the corresponding first gear transmission mechanism 54 into a swing motion, and the swing motion after conversion by the first converter 60 into a positive rotational motion. The 2nd conversion part 61 etc. which convert are comprised, and it comprises so that the normal rotational motion after the conversion by the 2nd conversion part 61 may be transmitted to the two chemical | medical agent delivery parts 34 corresponding as a normal rotational power.

  In the transmission device 18, the two first fraction clutches 53 on the left side that intermittently transmit power to the two seed delivery units 25 on the left side and the two drug delivery units 34 on the left side are switched to the same operating state. The two first fraction clutches 53 on the left and right center side for intermittent transmission to the two seed feeding portions 25 and the two left and right center side medicine feeding portions 34 are switched to the same operating state, and the two right seed feeding portions 25 and Three first fraction clutches 53 that interlock and connect the corresponding two first fraction clutches 53 so that the two first fraction clutches 53 on the right side that are intermittently transmitted to the two right-hand drug delivery portions 34 are switched to the same operating state. One linkage mechanism 62 is provided.

  In addition, the left two first fraction clutches 53 and the left second fraction clutch 58 that interrupts transmission to the left two fertilizer feeding portions 29 are switched to the same operating state, and the two left and right center second clutches are switched. The one-end clutch 53 and the second-end clutch 58 on the left and right center side for intermittently transmitting power to the two fertilizer feeding portions 29 on the left and right center side are switched to the same operating state, and the two first-end clutches 53 on the right side are switched. The corresponding first linkage mechanism 62 and the second fraction clutch 58 are interlocked so that the right second fraction clutch 58 that interrupts transmission to the two fertilizer feeding portions 29 on the right side is switched to the same operating state. Three second linkage mechanisms 63 to be connected are provided.

In the work unit A, three operation levers 64 that can be swung in the left-right direction are dispersedly arranged at locations corresponding to the second fractional clutches 58 in the front upper part of the sowing frame 14.
Then, the operating state of the left second fraction clutch 58 is switched in accordance with the left / right swinging operation of the left operating lever 64, and the left / right center side operating lever 64 is swung in the left / right direction. The operation state of the second fraction clutch 58 on the left and right center side is switched, and the operation state of the right second fraction clutch 58 is switched as the right operating lever 64 swings in the left and right direction. Yes.

  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 items that actuate all the seed feeding unit 25, the fertilizer feeding unit 29, and the medicine feeding unit 34. Working state, left four-row working state in which the four seed feeding units 25 on the left side, the fertilizer feeding unit 29, and the medicine feeding unit 34 are operated, the two seed feeding units 25 on the left side, the fertilizer feeding unit 29, and the drug feeding unit 34 Left two-row working state, the right four seed feeding section 25, the right fertilizer feeding section 29, and the medicine feeding section 34 are operated, and the two right seed feeding section 25 and the fertilizer feeding. It is possible to switch to the right two-row working state in which the part 29 and the medicine feeding part 34 are operated.

  As shown in FIGS. 12 and 14, the work unit A has three spaces 65 extending between two adjacent drug supply portions 34 in an interlocked state from between two adjacent seed supply portions 25 in an interlocked state. I have. Then, by effectively using these spaces 65, the interlocking mechanism 50 corresponding to each space 65 is provided, so that the work unit A can be reduced in size.

  As shown in FIGS. 3, 4, and 8, the work unit A has a rake-like shape for leveling dredging or the like by each auxiliary wheel when an auxiliary wheel (not shown) is mounted on the inner side of each rear wheel 6. Left and right leveling plates 66 are provided. In addition, left and right mud removing covers 67 are provided to prevent mud soil splashed by the respective rear wheels 6 from accumulating on the upper surfaces of the left and right leveling floats 19 located behind the respective rear wheels 6. Thereby, the leveling performance at the time of forward traveling for work can be enhanced.

  [Another embodiment]

[1] The paddy field machine may be configured to have a mid-mount fertilizer specification in which the fertilizer storage unit 28 and the fertilizer feeding unit 29 of the fertilizer device 16 are provided at the rear of the traveling vehicle body 1. Further, a rear mount fertilizer application configuration in which a fertilizer storage unit 28 and a fertilizer feeding unit 29 of the fertilizer application device 16 are provided behind the main storage unit 24 of the main work device 15 may be used. Furthermore, the walking-type traveling vehicle body 1 may include the main working device 15, the fertilizer device 16, and the medicine application device 17 and may be configured as a walking type.

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

[3] The work unit A may be configured to perform a plurality of work such as 4 or 8 other than 6. Moreover, the thing which is not equipped with the leveling float 19 may be sufficient. Further, at least one of the medicine covering soil member 42 and the fertilizing soil covering member 43 may not be provided.

[4] As the work unit A, each fertilizer supply unit 31 is fixedly installed at a portion near the left and right outer ends in the left and right overhang regions provided in the front end side portion of the corresponding leveling float 19, and each drug supply Positioning the corresponding fertilizer supply part 31 and the medicine supply part 36 at a predetermined interval in the lateral width direction of the machine body by fixing and mounting the part 36 to a part near the left and right center in the left and right overhang regions of the corresponding leveling float 19 You may comprise so that it may be deployed.

[5] As the work unit A, the plurality of medicine supply units 36 are positioned at the front side of the machine body from the plurality of main supply units 26 and at a predetermined interval from the corresponding main supply unit 26 in the lateral width direction of the machine body. In addition, the plurality of fertilizer supply units 31 are disposed at a position on the front side of the machine body from the plurality of drug supply units 36 and at the same position in the machine body width direction with the corresponding main supply unit 26. It may be configured. Further, a plurality of medicine supply units 36 are arranged at a position in front of the machine body with respect to the plurality of main supply units 26 and at the same position in the width direction of the machine body with the corresponding main supply units 26, and a plurality of fertilizers Even if the supply unit 31 is configured to be disposed at a position on the front side of the machine body from the plurality of drug supply units 36 and at a predetermined interval from the corresponding main supply unit 26 in the horizontal direction of the machine body. Good.

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

[7] As the main work device 15, a seedling mount as a main storage unit 24 for seedlings, a plurality of starwheel type or belt type seedling vertical feed mechanisms as a plurality of main feeding units 25 for seedlings, and You may employ | adopt the seedling planting apparatus provided with the some planting mechanism of the crank type or the rotary type as the some main supply part 26 for seedlings. Moreover, it may be configured to sow seeds such as seed seeds that have been subjected to a calper coating process, seed seeds that have not been subjected to a coating process, or seeds such as wheat and vegetables.

[8] The fertilizer application device 16 may be configured to supply a fertilizer in powder form or liquid form to the field. Further, each fertilizer supply unit 31 may not be provided with a fertilizer groover 32, and fertilization may be performed by spraying or dripping for each work strip.

[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 portion of each fertilizer hopper 28 </ b> A has an upper end portion of the handrail 13 provided at the rear portion of the traveling vehicle body 1. It may be configured so as to be positioned above.

[10] As the fertilizer application device 16, a plurality of fertilizer supply units 31 configured in a grooving type may be installed in 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 granular or liquid medicine to the field. In addition, each medicine supply unit 36 may not be provided with the groove forming device 37 for medicine, and the medicine may be configured to be applied by spraying or dripping for each work strip.

[12] As the medicine application device 17, the medicine supply port provided in the upper part of each medicine storage section 33 may be provided low enough to be positioned above the upper end of each main storage section 24. Alternatively, the medicine supply port provided at the upper part of each medicine reservoir 33 may be arranged so as to be positioned below the upper end of each main reservoir 24.

[13] As the drug application device 17, each drug supply unit 36 is provided with a rear end portion of the drug application groove generator 37 included in each drug supply device 36 in each fertilizer groove generator 32 positioned behind them. It may be arranged at a position closer to the front side of the machine body so as to overlap the front end portion of the groove forming aid 38 in a side view.

[14] As the medicine application device 17, each medicine supply unit 36 may be mounted on the leveling float 19 so as to overlap the rocking fulcrum 41 of the leveling float 19 in a side view.

[15] The main reservoir 24 includes a seed hopper 24A having a seed replenishing port at the upper end, and a seed hopper cover 24B that opens and closes the seed replenishing port by being attached to and detached from the seed hopper 24A. Also good.

[16] The main storage unit 24 may be configured to store seeds or seedlings for one line, seeds or seedlings for two lines, or seeds or seedlings for all the lines.

[17] The fertilizer storage unit 28 includes a fertilizer hopper 28A having a fertilizer replenishment port at the upper end, and a fertilizer hopper lid 28B that opens and closes the fertilizer replenishment port by being attached to and detached from the fertilizer hopper 28A. Also good. Moreover, it may be configured to store fertilizers for one strip, fertilizers for two strips, or fertilizers for all strips.

[18] The drug reservoir 33 includes a drug hopper 33A having a drug supply port at the upper end and a drug hopper lid 33B that opens and closes the drug supply port by being attached to and detached from the drug hopper 33A. Also good. Moreover, it may be configured to store a drug for one line, a drug for two lines, or a drug for all lines. Further, the medicine hopper 33A may be configured such that the upper end portion thereof is horizontal.

[19] Engagement in which either one of the seed hopper 24A and the seed hopper lid 24B is provided with a holding tool 44 that holds the seed hopper lid 24B in a tilted posture after opening the seed replenishing port. You may comprise from a member and the to-be-engaged member with which the other was equipped.

[20] Engagement in which either one of the medicine hopper 33A and the medicine hopper lid 33B is provided with a holding tool 45 that holds the medicine hopper lid 33B in a tilted posture in which the medicine supply opening is opened. You may comprise from a member and the to-be-engaged member with which the other was equipped.

[21] As shown in FIG. 15 and FIG. 16, an upper member made of stainless steel or the like as a first member that is not elastically deformable is used for at least one of the fertilizer groover 32 and the drug groover 37. 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, and the lower member 71 forms a groove with a narrow groove width when the groove forming load increases, In addition, when the groove forming load becomes small, the groove may be formed with a wide groove width.
In this configuration, the lower member 71 is elastically deformed in the direction of narrowing the groove width by fitting the upper end portion of the lower member 71 to the lower end portion of the upper member 70 as shown in FIG. The upper member 71 may be configured to be restricted by contacting the lower end of the upper member 70.
Further, as shown in the figure, the groove forming aids 38 and 39 connected to the groove forming devices 32 and 37 may be made of resin, and the lower member 71 may be integrally formed with the groove forming aids 38 and 39. .

[22] At least one of the fertilizer groover 32 and the fertilizer groover 37 can be elastically deformed in the groove width direction with an inner member made of stainless steel as a first member that cannot be elastically deformed. A double structure comprising an outer member made of resin or the like as the second member, the outer member forms a groove with a narrow groove width when the groove forming load increases, and a wide groove when the groove forming load decreases. 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 outer member contacting the inner member.

[23] By making at least one of the fertilizer groover 32 and the fertilizer groover 37 entirely made of an elastically deformable resin such as a rubber plate, the groove becomes narrower when the groove load increases. A groove may be formed with a wide groove width when the groove width is reduced and the groove load is reduced.

[24] At least one of the fertilizer groover 32 and the fertilizer groover 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 formed on the upper part thereof. You may comprise so that the bellows part connected to may be formed integrally.

[25] As shown in FIG. 17, each leveling float 19 is applied rearward from the left and right overhanging regions between the drug application groover 37 and the fertilizer groover 32 in the rearward direction. You may comprise so that it may be equipped with the left-right grooved part leveling part 19C extended and formed in the length located behind the grooved machine 32 of this.

  According to this configuration, the field mud that has entered the lower part of each leveling float 19 with the forward traveling for work is caused by the groove formation of the medicine groover 37 accompanying the traveling at this time. Are pushed to the left and right of the fertilizer groover 32 by the groove of the fertilizer groover 32, so that the medicine groover 37 and the fertilizer groover 32 are applied. Even if it becomes easy to concentrate and float up between the two, by the action of the leveling portion 19C between the grooves to be located between them, the gap between the groove 37 for the medicine and the groove 32 for the fertilizer is obtained. It is possible to prevent the field mud from floating up.

  As a result, the field mud is lifted from between the grooving device 37 for fertilization and the grooving device 32 for fertilization, and the leveling performance is reduced due to the floating field mud riding on the leveling float 19. Can be prevented.

  The present invention can be applied to a riding direct sowing machine including a direct sowing apparatus as a main working apparatus, and a riding rice transplanter including a seedling planting apparatus as a main working apparatus.

DESCRIPTION OF SYMBOLS 15 Main work apparatus 16 Fertilizer 17 Drug application apparatus 19 Leveling float 19A 1st fixing | fixed part 19B 2nd fixing | fixed part 19C Groove leveling part 26 Main supply part 31 Fertilizer supply part 32 Grower for fertilization 36 Drug supply part 37 Grooving device for medicine application 38 Groove assisting tool 41 Oscillating fulcrum 42 Medicine covering soil member 43 Fertilizing soil covering member 70 First member 71 Second member

Claims (10)

A main working device for seeding or seedling planting that operates during forward traveling for work, a fertilizer device, and a medicinal device,
The main work device arranges and arranges a plurality of main supply parts that supply seeds or seedlings to the field at regular intervals in the left-right direction,
The fertilizer applicator is provided with a plurality of fertilizer supply sections that supply fertilizer to the field at positions spaced apart from the corresponding main supply section in the horizontal width direction of the machine body,
The drug application device includes a plurality of drug supply units configured in a groove type to groove the mud surface of a field with a drug grooving device and supply the drug into the groove, and the corresponding main supply unit. Paddy field work machine deployed at the same position in the width direction.   The paddy field work machine according to claim 1, wherein a plurality of medicine covering soil members for refilling each of the medicine grooves formed by the plurality of medicine supply sections are arranged at a rear position of the medicine supply section. Each of the plurality of fertilizer supply parts is configured in a groove-growing type in which the fertilizer is applied to the mud surface of the field by using a fertilizer for supplying fertilizer.
A plurality of fertilizer covering soil members that backfill each of the fertilization grooves formed by the plurality of fertilizer supply sections;
The plurality of drug covering soil covering members extend in a slanting rearwardly inclined posture toward the medicine groove to be backfilled from the first fixing portion provided on the side opposite to the fertilizer groove adjacent to the medicine groove to be backfilled,
The plurality of soil covering members for fertilization are extended in a slanting rearwardly inclined posture toward a fertilization groove to be backfilled from a second fixing portion provided on a side opposite to a medicine groove adjacent to the fertilization groove to be backfilled. Item 2. A paddy field machine according to Item 2. Equipped with a leveling float to level the mud surface of the field so that it can swing up and down,
Each of the plurality of fertilizer supply sections is configured as a groove-growing type in which the fertilizer is applied to the mud surface of the field and fertilizer is supplied into the groove, and the leveling float is swung in a side view. The paddy field work machine according to any one of claims 1 to 3, wherein the leveling float is provided in an arrangement overlapping with a fulcrum. Equipped with a leveling float to level the mud surface of the field,
The paddy field work machine according to any one of claims 1 to 4, wherein each of the plurality of medicine supply units is disposed in a front end side portion where a bottom surface of the leveling float is warped. Equipped with a leveling float to level the mud surface of the field so that it can swing up and down,
The paddy field work machine according to any one of claims 1 to 3, wherein each of the plurality of medicine supply units is mounted on the leveling float so as to overlap with a rocking fulcrum of the leveling float in a side view. Each of the plurality of fertilizer supply parts is configured in a groove-growing type in which the fertilizer is applied to the mud surface of the field by using a fertilizer for supplying fertilizer.
Each of the fertilizer groovers includes a grooving assisting tool that extends forward from the front end thereof to assist grooving by the fertilizer groovers,
Each of these chemical | medical agent supply parts is arrange | positioned in the position with which the rear-end part of the said groove preparation tool for said medicine overlaps with the front-end part of the said groove preparation auxiliary tool by a side view. Paddy field work machine described in 1.   Each of the groove forming devices is configured to be elastically deformable in the groove width direction so that a groove is formed with a narrow groove width when the groove forming load is increased and a groove is formed with a wide groove width when the groove forming load is decreased. The paddy field machine according to any one of claims 1 to 7.   Each of the groove producing devices includes a first member that is not elastically deformable and a second member that is elastically deformable in the groove width direction, and the first member is disposed inside the second member, and the groove width The paddy field work machine according to claim 8 which restricts elastic deformation of said 2nd member to the direction which narrows down by contact with said 1st member. Equipped with a leveling float to level the mud surface of the field,
The plurality of fertilizer supply parts are configured in a groove-growing type for supplying fertilizer into the grooves by grooving on the mud surface of the field by a fertilizer grooving device,
Equipped with the grooving device for the medicinal application and the grooving device for fertilization to the leveling float,
The leveling float is formed between the groover for applying fertilizer and between the groover for fertilizing, so that the rear end is located behind the groover for fertilizing. The paddy field work machine according to any one of claims 1 to 9 provided with a section.

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