JP6671092B2 - Paddy field machine - Google Patents

Description

  The present invention includes a traveling machine capable of traveling and moving in a field, a planting system working device for sowing or planting seedlings, and a granular material supply device supplying a fertilizer or a chemical to the field, and a planting system working device. The supply position of the seedlings or seeds to the field by the is scattered at predetermined intervals in the traveling direction of the traveling machine, and an intermittent supply mechanism is interposed in the middle of the supply route of the fertilizer or the chemical to the field by the granular material supply device. The present invention also relates to a paddy working machine configured such that supply positions of a fertilizer or a chemical to a field are also scattered at predetermined intervals in the traveling direction of the traveling machine.

  The paddy field working machine as described above is provided with a valve element (a shutter in Patent Document 1) in the middle of the flow path of fertilizer in the fertilizer application apparatus, and swings the valve element to open and close the flow path of fertilizer. Opening / closing operation tool (opening / closing lever in Patent Literature 1), and opening / closing operation by contact with a vertical feed arm (seedling feed cam in Patent Literature 1) provided on a feed shaft for laterally feeding the seedling rest. There is an intermittent supply mechanism for spotting fertilizer by swinging a tool (see, for example, Patent Document 1).

JP-A-2006-34175 (see paragraphs 0027, 0028, FIGS. 1, 5, and 6)

In the above configuration, the fertilizer can be sprayed in a spot-seeded state on the field where the seedlings have been planted by the seedling planting apparatus. Therefore, it is considered to be useful in that the amount of fertilizer to be sprayed can be reduced.
However, in this structure, the fertilizer is supplied once in conjunction with the planting of one plant of the seedling, but the relative position between the place where the seedling is planted and the place where the fertilizer is spotted is related. There is no particular consideration given to the physical positional relationship.
For this reason, although the fertilizer can be intensively sprayed as compared with the case of sowing by spot sowing, all of the intensively sprayed fertilizer is less than the fertilizer when it is sowed. May not always act more effectively on individual seedlings, and in the end, it may not be possible to effectively exert the effect of reducing fertilizer.

In the above configuration, the fertilizer can be sprayed in a spot-seeded state on the field where the seedlings have been planted by the seedling planting apparatus, and thus it is considered to be useful in that the amount of fertilizer to be sprayed can be reduced.
However, in this structure, since the relative positional relationship between the place where the seedlings were planted and the place where the fertilizer was spotted was not particularly considered, an appropriate amount of fertilizer was supplied for the entire field. Even so, the amount of fertilizer supplied to a specific planted plant varies depending on the type of seedling, so that the total amount of fertilizer can be reduced in supplying an appropriate amount of fertilizer to each individual seedling. Was not done.

  The present invention is devised such that the supply position of the fertilizer or the chemical to the field with respect to the supply position of the individual seedlings or seeds to the field is appropriate, and the fertilizer or the chemical for the seedlings or the seeds at the respective supply positions is supplied to the field. The aim is to reduce the supply.

  The technical means of the paddy working machine according to the present invention, which has been adopted to solve the above-described problems, has the following structural features and operational effects.

[Solution 1]
The technical means of the present invention taken to solve the above problems,
A traveling body capable of traveling and moving in a field,
A seeding device that supplies seed rice to the field,
A drug application device having a supply path for supplying a drug to a field,
Before Ki播 species apparatus, Yes configured to supply position to the fields of rice seeds are scattered at predetermined intervals in the traveling direction of the vehicle body,
The drug dispensing device is configured such that an intermittent supply mechanism is interposed in the middle of the supply path, and supply positions of the medicine to the field are scattered at predetermined intervals in the traveling direction of the traveling machine,
The supply path extends at least vertically below the intermittent supply mechanism,
The drug dispensing device includes a feeding portion at a lower portion of a drug hopper that stores a drug,
The dispensing unit of the dispensing device is located above the dispensing unit of the seeding device,
The intermittent supply mechanism is provided in a supply path at a position distant from the delivery section of the drug dispensing device below.
The dispensing device is disposed in front of the seeding device, and the intermittent supply mechanism disposed on the dispensing device is driven by an arm member that receives a driving force to the intermittent supply mechanism. And are connected so as to be interlocked with each other via a connection mechanism.

[Operation and Effect of Invention According to Solution 1]
Since the supply path of the granular material supply device extends in the vertical direction, the fertilizer or the medicine can be efficiently supplied to the field.

Further , according to the invention according to the above-mentioned Solution 1 , the powder feeding section is provided above the intermittent supply mechanism, and the feeding amount of the powder is adjusted to a predetermined range by the powder feeding section. Since it is fed out in a state where the powder is discharged, it is possible to prevent a large amount of powder and granular material stored in the powder and granular material hopper from flowing into the supply path on the upstream side of the intermittent supply mechanism and becoming unnecessarily deposited. Therefore, there is an advantage that it is easy to avoid a situation in which the granular material supplied to the supply path on the upstream side of the intermittent supply mechanism is increased in density due to its own weight, body vibration, or the like and is easily clogged.

[Solution 2 ]
Other technical means of the present invention taken to solve the above problems,
The intermittent supply mechanism includes a plate-shaped valve body that opens and closes the supply path,
The valve element is
One end is pivotally supported by the supply path via a support shaft, and the other end is configured to be swingable,
With respect to an orthogonal direction substantially orthogonal to the vertical direction in which the supply path extends, it is inclined downward from the one end to the other end,
The other end side is in a closed posture intersecting the supply path in an inclined posture located below the orthogonal direction passing through the one end side, and the other end side is in an orthogonal direction passing through the one end side compared to the closed posture. That is, it is configured to be in an open position in which the supply path is opened as it swings to the side located further below.
[Operation and Effect of Invention According to Solution 2 ]
According to the invention according to the above-described Solution 2 , the valve body is in the closed posture in which the upper surface side receives the fertilizer or the medicine in an inclined posture obliquely intersecting the supply path. For this reason, the fertilizer or chemicals on the upper surface side of the valve element flow downward to the slope on the upper surface side of the valve element, and do not diffuse throughout the supply path, but are concentrated in a relatively narrow area. State.
Therefore, when the valve body is swung from the lower side to the lower side and dropped and supplied to the field, there is an advantage that the valve element is intensively supplied to a predetermined location in the field without dispersing the fertilizer or the chemical, and it is easy to perform spot seeding.
[Solution 3 ]
Another technical means of the present invention taken in order to solve the above problems, the the supply position to the fields of by that pharmacist at the supply position and Seyaku apparatus to by that species paddy field sowing apparatus, wherein the seeding device by that species rice one supply position in the well as the first reference position, the position of supplying by that drug agent to the Seyaku device closest position to the first reference position as the second reference position, and the distance from the first reference position to the second reference position, spaced from the seed rice supply position location adjacent before and after the traveling direction with respect to the first reference position to the second reference position distance, and is that which is set to be shorter than the distance from the seed rice supply position location adjacent the left and right direction to the second reference position with respect to the first reference position.

[Operation and Effect of Invention According to Solution 3 ]
According to the invention according to the above Solution 3 , one supply position of the seedlings or seeds by the planting and working system is set as the first reference position, and the fertilizer is provided by the powder and granular material supply device at a position closest to the first reference position. Or, when the supply position of the medicine is set as the second reference position, the interval between the first reference position and the second reference position is the supply position of the seedling or seed rice at a position adjacent to the first reference position in front, rear, left and right. And the supply operation of the intermittent supply mechanism is controlled so as to be shorter than the interval between the second reference position and the second reference position.
Thereby, the interval between the first reference position and the second reference position is shortened, that is, the supply position of the seedling or the seed rice and the supply position of the fertilizer or the chemical are brought as close as possible, and the fertilizer or the chemical for the seedling or the seed rice is reduced. There is an advantage that the utility can be exerted effectively and the supply amount of fertilizer or drug can be reduced.

[Solution 4 ]
Another technical means of the present invention taken to solve the above-mentioned problem is that a support shaft of a plate-shaped valve element that opens and closes the supply path is located on a front side of the supply path in a traveling direction of the traveling machine body. When the valve body is in the closed position, the upper surface of the valve body is configured to be inclined backward and downward.

[Operation and Effect of Invention According to Solution 4 ]
According to the invention according to the above-mentioned Solution 4 , the valve body is in the closed posture for receiving the fertilizer or the medicine in the backward inclined position so that the supply path is closed in the backward inclined position in which the upper surface side is located lower toward the rear side. .
For this reason, the fertilizer or the medicine on the upper surface side of the valve element flows rearward, which is the inclined lower side on the upper surface side of the valve element, and does not diffuse throughout the supply path, but a relatively narrow area on the rear side. It is in a state of being gathered intensively. When the valve is swung from the lower side to the lower side and supplied to the field by dropping, the valve is supplied intensively to a predetermined location in the field while avoiding the dispersion of fertilizers or chemicals. Since it is supplied to the rear side away from the location, there is an advantage that it is easy to perform good spot seeding while avoiding the adhesion and deposition at the groove generator part.

[Solution 5 ]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that, in the supply path, a valve mounting pipe part that houses a plate-shaped valve element that opens and closes the supply path has a valve mounting pipe part. Is also formed to be larger in diameter than the cylindrical upstream downflow pipe on the upstream side, and the valve body is configured to be in a closed position by abutting the lower end of the upstream downflow pipe from below. is there.

[Operation and Effect of Invention According to Solution 5 ]
According to the invention according to the above solution 5 , on the upper surface side of the valve body in the closed posture for receiving the medicine in an inclined posture obliquely intersecting the supply path, the fertilizer or the fertilizer or the fertilizer flows down along the inclination of the upper surface. The drug is transferred, and the fertilizer or the drug is collected even in the horizontal direction along the inner peripheral surface of the cylindrical upstream downflow pipe.
Therefore, there is an advantage that the fertilizer or the chemical is more intensively supplied to a predetermined location in the field while further avoiding the dispersion of the fertilizer or the chemical, and it is easy to perform good spotting.
In addition, since the valve element is brought into the closed position by contact from the lower side with respect to the lower end of the upstream downstream pipe, the valve body moves in the direction along the inner peripheral surface of the upstream downstream pipe and is switched to the closed attitude. Compared with the structure, it is also advantageous in that the movement of the valve body is less likely to be inhibited by a fertilizer or a chemical adhering to the inner peripheral surface of the upstream downflow pipe.

[Solution 6 ]
Another technical means of the present invention taken to solve the above-mentioned problem is that, among the supply paths, a flow path cross-sectional area of the supply path is located below a plate-shaped valve element that opens and closes the supply path. narrowed portion of the squeezed before Symbol pharmacists collected in a channel center side of the supply path is that are provided.

[Operation and Effect of Invention According to Solution 6 ]
According to the invention according to the above-mentioned Solution 6 , there is an advantage that the fertilizer or the chemical can be more easily intensively spot-seeded by the presence of the throttle in the supply path.

[Solution 7 ]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that, at the lower end of the supply path, a channel-shaped groove-forming device having a rear open side is provided, and the lower end of the supply path is provided. , An inclined guide surface is formed in a rearward-downward posture for guiding the fertilizer or medicine toward the open rear side of the groove generator.

[Operation and Effect of Invention According to Solution 7 ]
According to the invention according to the above solution 7 , the fertilizer or the chemical can be guided toward the open rear side of the groove generator by the inclined guide surface in the rearwardly lowered posture. There is an advantage that the possibility of adhering to and depositing on the front wall or the like can be reduced.

[Solution 8 ]
Another technical measure of the present invention taken to solve the above-mentioned problem is that, at the lower end of the supply path, on the rear side from the rear end of the inclined guide surface, the fertilizer or the drug is diffused in the left-right direction. That is, a side guide surface is formed to suppress the occurrence of the pressure.

[Operation and Effect of the Invention According to Solution 8 ]
According to the invention according to the above solution 8 , since the side guide surface is formed further rearward than the rear end of the inclined guide surface, the adhesion of fertilizer or chemicals to the left and right lateral side walls of the groove generator. It is also advantageous in that it is easy to avoid deposition.

It is a left view of a riding type direct sowing machine. It is a top view of a riding type direct sowing machine. It is a left view of an operation unit. It is a vertical left view of the working unit. It is a rear view of a working unit. It is a longitudinal rear view of the working unit showing the configuration of the fertilizer application device. It is a longitudinal rear view of the working unit showing the configuration of the medicine applying device. It is a cross-sectional plan view of the working unit showing the arrangement of the seed supply unit, the fertilizer supply unit, and the chemical supply unit. It is the schematic which shows the transmission structure of a working unit. It is a vertical side view of the principal part which shows the interlocking | linkage structure etc. of a seeding apparatus and a drug application apparatus. FIG. 3 is a cross-sectional plan view of a main part showing an interlocking structure between a sowing device and a medicine applying device. It is a vertical side view which shows the linkage mechanism from a seeding apparatus to an intermittent supply mechanism. It is a vertical side view which shows the operating state of the valve body in an intermittent supply mechanism. It is sectional drawing which shows the positional relationship in the horizontal direction between the supply path of a medicine and a groove generator. It is a disassembled perspective view which shows the linkage mechanism from a seeding apparatus to an intermittent supply mechanism. It is explanatory drawing which shows the positional relationship between a seeding position and a granular material supply position. The lower end part of the granular material supply path | route in another embodiment is shown, (a) is a longitudinal side view, (b) is a bottom view.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

〔overall structure〕
FIG. 1 and FIG. 2 show an entire riding type direct sowing machine which is an example of a paddy field working machine according to the present invention. The riding type direct sowing machine includes a working unit A for sowing at the rear of the traveling body 1 configured as a riding type four-wheel drive type. The work unit A can be moved up and down by the operation of a lifting / lowering cylinder 14A employing a single-acting hydraulic cylinder so that the vertical position can be changed by the operation of a lifting / lowering cylinder 14A. It is connected as possible.

The traveling body 1 has an engine 4 mounted on a front portion thereof, and has a hydrostatic continuously variable transmission (not shown) having a power from the engine 4 as a main transmission, and an auxiliary transmission. The transmission is transmitted to the left and right front wheels 5 and the left and right rear wheels 6 via a gear type transmission (not shown).
On the rear side of the traveling body 1, there is provided a boarding operation unit 10 provided with a boarding step 7, a steering wheel 8 for front wheel steering, a driving seat 9 whose position can be adjusted in the front-rear direction, and the like. Left and right extension steps 11 for extending the boarding area to the left and right are provided on the left and right sides of the traveling body 1. Behind the boarding operation unit 10, a rear step 12 extending from the rear of the traveling body 1 toward the work unit A above the link mechanism 14 and the left and right rear wheels 6, and a movement with respect to the rear step 12. A handrail 13 to be used at the time is provided.

[Work unit]
As shown in FIGS. 1 to 5, the working unit A includes a unit frame 2 that is rotatably connected to a rear end of the link mechanism 14. The unit frame 2 includes a sowing device 15 (corresponding to a seeding system working device) for six lines as a working device for sowing, a six-line fertilizing device 16 for supplying fertilizer to a field, and a drug to a field. A 6-line drug application device 17 (corresponding to a granular material supply device) to be supplied is mounted.
A transmission device 18 for transmitting a driving force to the seeding device 15, the fertilizer application device 16, and the drug application device 17 is provided. The unit is provided with three character-shaped leveling floats 19 and left and right groove cutting tools 19C for forming a drainage ditch in a field as the work advances.

As shown in FIGS. 3 to 7, the unit frame 2 includes a mounting frame 2 </ b> A connected to the rear end of the link mechanism 14, and a horizontally long lower horizontal frame 20 extending to both left and right sides of the mounting frame 2 </ b> A. And a plurality of front and rear frames 21 extending in the front and rear direction on the lower surface side of the lower horizontal frame 20.
Further, on the front upper surface side of the front and rear frames 21, a front support frame formed in a gate shape by a vertical frame 22A erected in the vertical direction and an upper horizontal frame 22B erected in the left and right direction on the upper end side. 22 is erected. On the rear upper surface side of the front and rear frames 21, a rear support frame 23 formed in a gate shape by a vertical frame 23 </ b> A erected vertically and an upper horizontal frame 23 </ b> B erected in the left and right directions at the upper end side. Has been established.
The front support frame 22 is at a position where the height of the upper horizontal frame 22B is higher than the height of the upper horizontal frame 23B of the rear support frame 23, and supports the fertilizer hopper 28 at a position higher than the seed hopper 24. .

As shown in FIGS. 1 to 5, the fertilizer hopper 28 is configured such that the upper horizontal frame is positioned with respect to the front support frame 22 of the unit frame 2 in front of the vertical frame 22 </ b> A of the front support frame 22. 22B.
In the front support frame 22 of the unit underframe 2, the medicine dispensing section 34 (corresponding to a powder and granule dispensing section) and the medicine hopper of the dispensing device 17 are positioned on the rear side of the vertical frame 22 </ b> A. 33 (corresponding to a powder hopper).
The chemical hopper 33 is configured with a smaller capacity than the fertilizer hopper 28 and the seed hopper 24, and is located between the fertilizer hopper 28 and the seed hopper 24 in the front-rear direction, and also in the vertical direction. It is arranged at a height intermediate with the hopper 24.

  In the working unit A thus configured, the unit frame 2 is connected to the rear end of the link mechanism 14 as shown in FIGS. 1 and 3, and the unit frame 2 is moved from the traveling body 1. It is configured to be able to swing right and left around the axis (not shown) of the input section 46 that receives power.

(Seeding equipment)
As shown in FIG. 1 to FIG. 5 and FIG. 8, the seeding device 15 includes left and right seed hoppers 24 that store three rows of seed hulls as storage units for storing seed hulls that have been subjected to an iron coating process, which is an example of seed hulls. It has. Below the seed paddy hopper 24, there are provided six seed pad feeding sections 25 for spot seeding by intermittently feeding a predetermined amount of seed pad from the seed paddle hopper 24 downward. Furthermore, six seed rice supply units 26 are provided as supply units that drop and supply the seed rice unreeled by the seed unreeling unit 25 downward to the muddy surface of the field after being leveled, which is located immediately below the seed unreeling unit 25. ing.
Then, various kinds of unhulling parts 25 are actuated by working power transmitted from the traveling machine 1 transmitted via the external transmission shaft 27 and the transmission device 18 and the like. It is configured as a mud surface spot seeding system for 6 lines, in which a maximum of 6 lines are sown on the mud surface of the field at a predetermined interval.

  In the seeding device 15, the left and right seed hoppers 24 form three seed pad discharge ports (not shown) at their lower ends at regular intervals in the left-right direction. Then, the seed pad feeding section 25 is connected to each of the seed pad outlets in the various pad hoppers 24. The various paddy feeding units 25 are connected to the seed pad supply unit 26 at the lower ends of the seed pad discharge sides. The various paddy supply units 26 are also provided with the left and right seed paddle hoppers 24 so as to be aligned with the corresponding seed pad feeding unit 25 and the seed pad discharge port at a predetermined interval in the left-right direction.

(Fertilizer application equipment)
As shown in FIGS. 1 to 8, the fertilizer applicator 16 intermittently feeds a predetermined amount of fertilizer from the left and right fertilizer hoppers 28 that store granular fertilizer, which is an example of fertilizer, in three rows, and the corresponding fertilizer hoppers 28. Six fertilizer feeding sections 29, six fertilizing hoses 30 as fertilizer guide tubes for guiding down the fertilizer fed by the corresponding fertilizer feeding sections 29, and supplying the fertilizer guided by the corresponding fertilizing hoses 30 to the field. One fertilizer supply unit 31, and the like.
Each fertilizer delivery unit 29 is operated by work power transmitted from the traveling machine body 1 via the external transmission shaft 27 and the transmission device 18, so that a predetermined amount of fertilizer is spaced at predetermined intervals in the front-rear direction. It is configured for 6-rows for applying up to 6 rows of fertilizers in the closed state.

  At the lower ends of the left and right fertilizer hoppers 28, three fertilizer discharge ports (not shown) are arranged at regular intervals in the left-right direction. Further, a fertilizer feeding section 29 is connected to each of the fertilizer discharge port forming portions in each fertilizer hopper 28. Each fertilizer feeding section 29 is configured to be arranged at predetermined intervals in the left-right direction while being connected to the corresponding fertilizer hopper 28.

  Each fertilizer supply unit 31 is configured in a groove-forming type to supply a fertilizer into the ditch by forming a ditch on a muddy surface of the field after the leveling by a fertilizer ditching device 32 formed in a U-shape in plan view that opens rearward. doing. And the front end side portion of the corresponding leveling float 19 is located at a position on the front side of the fuselage with respect to the corresponding seed rice supply unit 26 and at a position spaced apart from the corresponding seed rice supply unit 26 by a predetermined distance in the body width direction. It is fixedly installed at the part near the left and right center in the left and right overhang areas prepared for.

(Pharmacy device)
As shown in FIGS. 1 to 5 and FIGS. 7 and 8, the medicine dispensing device 17 includes three medicine hoppers 33 that store medicines such as a powdery herbicide or a disease-controlling agent, which is an example of a granular material, in two rows. It has. At the lower part of the medicine hopper 33, six medicine feeding sections 34 for feeding a predetermined amount of medicine from the medicine hopper 33 are provided in series. The medicine supply section 34 includes six medicine supply hoses 35 as supply paths for guiding the medicines fed down, and six medicine supply sections 36 for supplying the medicines guided by the corresponding medicine supply hoses 35 to the field. I have.
In addition, the medicine dispensing device 17 intermittently supplies the medicine which is fed out and flows down from the medicine dispensing portion 34 to a middle position of the dispensing hose 35 as a supply path at a position closer to the field scene than the medicine dispensing portion 34, intermittently. An intermittent supply mechanism 70 is provided for sending the sheet downward.

The above-mentioned seed dispensing unit 34 and the intermittent supply mechanism 70 are connected to the seed paddy of the seeding device 15 via an interlocking mechanism 50 (corresponding to a linking mechanism for feeding out) and an intermittent linking mechanism 80 (corresponding to a linking mechanism). The driving force in the feeding section 25 is configured to be transmitted.
As described above, the working power transmitted from the traveling machine 1 via the external transmission shaft 27 and the transmission device 18 is transmitted to the seed unreeling unit 25 of the seeding device 15. The chemical feeder 34 and the intermittent supply mechanism 70 driven by the power of the seed rice feeder 25 are also driven by the working power from the traveling machine 1.

  Each medicine hopper 33 has two medicine outlets (not shown) formed at the lower end thereof at predetermined intervals in the left-right direction. In addition, a medicine feeding section 34 is connected to each of the medicine outlet openings of each medicine hopper 33. Each of the medicine feeding sections 34 is configured to be arranged at predetermined intervals in the left-right direction in a state of being connected to the corresponding medicine hopper 33.

  Each medicine supply section 36 is formed in a groove-forming type in which a groove is formed on the mud surface of the field after leveling by a medicine-forming groove-forming device 37 formed in a U-shape in plan view with the rear open to supply the medicine into the groove. doing. Then, at the position on the body front side of the corresponding fertilizer supply unit 31 and at the substantially same position in the machine width direction with the corresponding seed rice supply unit 26, the corresponding left and right floats 19 of the corresponding leveling float 19 are described above. It is fixedly mounted on the left and right outer ends of the overhang area.

  The medicine which is intermittently sent to the medicine supply section 36 at the lower end side of the drug application hose 35 via the medicine feeding section 34 and the intermittent supply mechanism 70 is supplied with a predetermined amount of medicine at predetermined intervals in the front-rear direction. . The dispensing device 17 is configured for six lines for performing a maximum of six lines.

  As shown in FIG. 3 to FIG. 5 and FIG. 8, each leveling float 19 includes a left and right drug application covering member 42 that levels back by filling each of the drug application grooves formed by the left and right drug supply units 36 provided therein. It is provided so as to be located between the medicine supply unit 36 and the seed supply unit 26 arranged in front and rear. In addition, there are left and right fertilizing cover soil members 43 for backfilling and leveling each of the fertilizing grooves formed by the left and right fertilizer supply units 31 provided therein.

  The respective soil covering members 42 are backfilled from the outer end portions 19A of the left and right overhang areas of the respective leveling floats 19 which are the first fixing portions provided on the side opposite to the fertilization grooves adjacent to the respective medicine groove to be backfilled. It extends in a diagonally rearwardly inclined posture toward the drug supply groove so that the extending end side reaches the drug supply groove to be backfilled.

  Thereby, the field mud extruded to the lateral outside of each leveling float 19 of the field mud extruded in the left and right direction along with the groove of each medicine supply unit 36 performed during the forward traveling for work, etc. The medicine covering soil member 42 can guide each medicine treatment groove. As a result, when the mud of the field is hard and hard to flow into the drug application groove, or when the working speed is high and each preceding chemical supply unit 36 forms a groove and the subsequent various rice supply units 26 sow, Even when it is difficult to secure the time required for backfilling the grooves, it is possible to quickly and reliably perform backfilling of each of the drug application grooves, and sowing is performed in a state where the backfill of each of the drug application grooves is insufficient. This can be prevented more reliably.

  As shown in FIGS. 3, 4 and 8, each of the fertilizer-forming device 32 and each of the medicament-forming device 37 extend forward from the front end thereof, and each of the device 32, 37. The groove forming aids 38 and 39 for assisting the groove formation by the above are connected and provided. Each of the groove working aids 38 and 39 is formed so as to have a bottom surface that is warped up toward the front end side. Thereby, the groove making by each of the groove making devices 32 and 37 can be performed smoothly with little resistance.

(Power transmission structure)
The power transmission structure in the work unit A will be described.
As shown in FIGS. 3 to 7 and 9, the transmission device 18 of the work unit A includes an input portion 46 to which power from the traveling machine body 1 is transmitted via the external transmission shaft 27 and the like.
The power transmitted to the input unit 46 is transmitted from the input unit 46 to a power distribution shaft 47 that distributes the power to the left and right. Power is transmitted from the left end of the power distribution shaft 47 to the various padding units 25 of the seeding device 15 via a low-speed transmission system 48 that transmits low-speed power. Further, the power is transmitted from the right end of the power distribution shaft 47 to each fertilizer feeding section 29 of the fertilizer application device 16 via a high-speed transmission system 49 that transmits high-speed power.

Further, as shown in FIG. 9, the transmission device 18 includes an interlocking mechanism 50 that interlocks and connects one seed unreeling unit 25 on the seeding device 15 side and two drug unwinding units 34 on the drug dispensing device 17 side. An intermittent linking mechanism 80 that interlocks and links one seed unreeling unit 25 on the seeding device 15 side and two intermittent supply mechanisms 70 on the drug application device 17 side is provided.
Each of the interlocking mechanism 50 and the intermittent interlocking mechanism 80 is provided at three locations.
In other words, the medicine dispensing device 17 is provided with three sets of medicine delivery sections 34 each including two medicine delivery sections 34 and three sets of intermittent supply mechanisms 70 each including two intermittent supply mechanisms 70. I have. One of the two seed dispensing sections 25 on the side of the sowing apparatus 15 at a corresponding location is linked to the medicine dispensing section 34 of each set via the interlocking mechanism 50.
In addition, the other of the two seed unreeling units 25 on the side of the seeding device 15 at the corresponding locations is linked to the intermittent supply mechanism 70 of each set via the intermittent linking mechanism 80.

  In this transmission device 18, various kinds of padding of the seeding device 15 are linked because the various padding portions 25 of the seeding device 15 and the respective drug delivery portions 34 of the drug application device 17 are linked at low speed by low-speed power via the low-speed transmission system 48. It becomes easy to match the timing of dispensing the seed rice by the section 25 and the timing of dispensing the medicine by each medicine dispensing section 34 of the drug application device 17. This makes it easy to match the seeding position of the seeding device 15 with the dispensing position of the dispensing device 17 in the longitudinal direction of the machine. And, since it is easy to match the seeding position and the medicine applying position in the longitudinal direction of the machine, a small amount of medicine can be stably supplied near the seed rice. As a result, it is possible to effectively obtain the medicinal effects such as disease control and insect repellent against the seed rice while reducing the amount of applied medicine.

  Further, when the fertilizer feeding section 29 of the fertilizer applicator 16 and the medicine feeding section 34 of the drug applicator 17 are linked with each other, in order to match the seeding position of the seeder 15 with the medicine feeding position of the drug applicator 17 in the longitudinal direction of the machine. The required deceleration structure can be dispensed with, whereby the configuration of the transmission 18 can be simplified.

  As shown in FIGS. 3 to 7 and FIGS. 9 to 11, in the transmission 18, the low-speed transmission system 48 includes a chain-type reduction mechanism 51 that reduces the power from the power distribution shaft 47, and a speed that is reduced from the chain-type reduction mechanism 51. A first relay shaft 52 for taking out the subsequent power, a left-right-oriented first relay shaft 52, six first minority clutches 53 provided on the first relay shaft 52, and a corresponding first minority number clutch 53 that transmits power to the seed unreeling unit 25. And two first gear type transmission mechanisms 54.

  The high-speed transmission system 49 includes a first conversion mechanism 55 that converts the rotational motion of the power distribution shaft 47 into an oscillating motion, and a second conversion mechanism 56 that converts the oscillating motion after the conversion by the first converting mechanism 55 into a forward rotational motion. A left-right second relay shaft 57 for taking out the forward rotation after conversion by the second conversion mechanism 56 as positive rotation power, three second minority clutches 58 provided on the second relay shaft 57, and second There are provided three second gear type transmission mechanisms 59 that transmit power from the minority clutch 58 to the corresponding two fertilizer feeding sections 29, and the like.

  Each interlocking mechanism 50 converts the rotational motion of the corresponding first gear type transmission mechanism 54 into a oscillating motion, and converts the oscillating motion after the conversion by the first converting unit 60 into a positive rotational motion. A second conversion unit 61 for conversion is provided, and the positive rotation motion converted by the second conversion unit 61 is transmitted to the corresponding two drug delivery units 34 as positive rotation power.

  In the transmission device 18, the two left first first minority clutches 53 that intermittently transmit power to the two left-handed seed unreeling units 25 and the two left-handed chemical unreeling units 34 are switched to the same operating state. The two right and left center side first minority clutches 53, which intermittently transmit power to the two seed unreeling units 25 and the two left and right central union dispensing units 34, are switched to the same operating state, and the two right seed unreeling units 25 and The three first minority clutches 53 corresponding to the two first minority clutches 53 are interlocked so that the two right first minority clutches 53 that intermittently transmit power to the two right drug delivery sections 34 are switched to the same operating state. A single linkage mechanism 62 is provided.

  In addition, the two first minority clutches 53 on the left and the second minority clutch 58 on the left that intermittently transmit power to the two fertilizer feeding sections 29 on the left are switched to the same operating state, and the two first minor clutches on the left and right sides are centered. The one minority clutch 53 and the left and right central second minority clutches 58 that intermittently transmit power to the two fertilizer feeding sections 29 on the left and right sides are switched to the same operation state, and the two first minority clutches 53 on the right side. The corresponding first linkage mechanism 62 and the second minority clutch 58 are interlocked such that the second minority clutch 58 on the right side, which intermittently transmits power to the two fertilizer feeding sections 29 on the right side, switches to the same operating state. It has three second linkage mechanisms 63 to be connected.

  In the work unit A, three operation levers 64 capable of swinging in the left and right directions are distributed and arranged at positions corresponding to the second minority clutches 58 in the upper front part of the unit frame 2. The operating state of the left second minority clutch 58 is switched in accordance with the left and right swing operation of the left operating lever 64, and the left and right central operating lever 64 is swung in the left and right direction. The operation state of the second minority clutch 58 on the left and right sides is switched, and the operation state of the second minority clutch 58 on the right side is switched in accordance with the swinging operation of the right operation lever 64 in the left-right direction. I have.

  In other words, by arbitrarily swinging each operation lever 64 from the traveling machine body 1, the work state of the work unit A is changed to a state in which all the seed unreeling units 25, the fertilizer unreeling units 29, and the medicine unwinding units 34 are operated. The work state, the left four work state in which the left four seed padding units 25, the fertilizer supply unit 29, and the medicine supply unit 34 are operated, and the left two seed paddle units 25, the fertilizer supply unit 29, the medicine supply unit 34, and , The right four-row working state of activating the right four seed padding units 25, the fertilizer feeding unit 29, and the chemical feeding unit 34, and the two right seed padding units 25 and the fertilizer feeding unit The state can be switched to the right two-row operation state in which the section 29 and the medicine feeding section 34 are operated.

  As shown in FIGS. 9 and 11, the working unit A has three spaces 65 extending between two adjacent seed dispensing units 34 in an interlocked state from between two adjacent seed dispensing units 25 in an interlocked state. Have. By effectively utilizing these spaces 65 and disposing the interlocking mechanism 50 corresponding to each space 65, the working unit A can be downsized.

[Intermittent supply mechanism]
The intermittent supply mechanism 70 provided in the middle of the drug application hose 35 as a drug supply path in the drug application device 17 is configured as follows.
The intermittent supply mechanism 70 is provided so as to be located at a lower side away from the medicine hopper 33 that stores the medicine as a granular material, and temporarily receives the medicine flowing down in the supply path at a low position close to the field scene. By dropping and intermittently supplying the medicine, the medicine is in a state of being scattered in a field.
At this time, the medicine is once received by the intermittent supply mechanism 70, and the fall start height H1 of the medicine which starts drop supply from the receiving position is the drop supply height of the seed paddy from the seed pad feeding section 25 of the seeding apparatus 15. Although it is set at a position higher than H2 by a predetermined height H3 (see FIG. 12), it can be set at almost the same height position.

  As shown in FIG. 9 and FIGS. 12 to 15, an intermediate point in the downflow path of the drug application hose 35 that guides down the drug that is fed out by a predetermined amount from the drug feeding section 34 that is continuously provided below the drug hopper 33 and flows down. Is provided with a valve box portion 71 (corresponding to a valve mounting pipe portion) having a larger flow path cross-sectional area than the upstream pipe line 35a of the drug application hose 35, and an operation shaft 72 (in the valve box portion 71). A plate-shaped valve body 73 is provided via a shaft (corresponding to a support shaft).

The upper connecting portion 71a of the metal valve box 71 is inserted into the lower end of a synthetic resin flexible hose constituting the upstream conduit 35a of the drug application hose 35. The inner diameter of the upper connecting portion 71a is formed to be substantially the same as the inner diameter of the flexible hose above the upper connecting portion 71a, and constitutes a series of upstream pipes 35a.
On the lower end side of the upper connecting portion 71a, a lower connecting portion 71b having a larger flow path cross-sectional area than the upstream conduit 35a is integrally formed, and a valve body 73 of the operating shaft 72 is provided inside the lower connecting portion 71b. It is supported so that it can swing open and close around the axis.

A lower connecting pipe 74 made of a synthetic resin is externally fitted to a lower portion of the lower connecting portion 71b. The lower connection pipe 74 has a downstream pipe passage 35b therein and constitutes a lower end portion of the drug application hose 35. The lower connection pipe 74 has a bellows-like tubular section 74a on the outside and a cylindrical guide tubular section 74b on the inside. And has a double cylindrical shape.
A tapered tube 75 (corresponding to a throttle portion) is connected to the lower side of the lower connection tube 74, and a groove generator 37 is connected to the outside of the lower portion of the tapered tube 75.
The tapered tube 75 is formed in a tapered shape in which the lower end opening 75a is formed to have a smaller diameter than the upper end opening 75b, and the lower end opening 75a is formed in a plan view as shown by a virtual line in FIG. The groove device 37 is provided so as to be separated from the front wall and the left and right lateral walls and substantially at the center of the groove device 37.

As shown in FIG. 14, the lower end of the upstream conduit 35 a is located closer to the rear than the front wall of the groove generator 37 by a distance L5 in plan view.
When the tapered tube 75 is used as described above, the supply position of the medicine is dropped and supplied immediately below the lower end side opening 75a. For example, the lower connecting tube 74 is used without using the tapered tube 75. When the groove generator 37 is directly connected to the lower part of the container, the medicine is dropped and supplied from a position corresponding to the lower end portion of the upstream pipe 35a indicated by a virtual line in FIG.
In addition, the valve body 73 receives the medicine in the backward inclined posture, as described later. When the valve body 73 is opened as shown by the imaginary line in FIG. 13, the medicine is higher than the center of the upstream pipe 35a. Since it falls in a state biased toward the rear side and is supplied to a position near the rear side of the upstream pipeline 35a indicated by the phantom line in FIG. 14, the front wall is largely separated from the front wall of the groove generator 37. Supplied in a state where it is easy to avoid adherence.

As shown in FIG. 13, an operation shaft 72 is provided on the front upper portion of the valve box 71 in the left-right direction so as to be located on the front side of the medicine supply path. The front end side is fixed, and a valve receiving portion 71c is formed at the lower end of the upper connecting portion 71a at a position lower than the operation shaft 72 on the front side, behind the valve box portion 71.
As a result, the valve body 73 in the valve box portion 71 is in the closed posture for receiving the medicine in the backward inclined posture such that the supply path is closed in the backward inclined posture in which the upper surface side is located lower toward the rear side.
In the closed posture in which the upper surface of the valve body 73 contacts the valve receiving portion 71c from below, as shown in FIG. 13, the medicine received on the upper surface of the valve body 73 moves rearward due to the inclination of the upper surface, and It is guided by the arc-shaped rear inner peripheral surface of the upper connecting portion 71a constituting the upstream conduit 35a, and is gathered more at the central side in the left-right direction.
Therefore, when the valve 73 is rotated clockwise around the axis of the operation shaft 72 to switch to the open position from this state, as indicated by a virtual line in FIG. 13, the medicine on the upper surface of the valve 73 is moved upstream. It falls along the extension of the part near the back side of the side pipe 35a, and is supplied to the field in a spotted state.

As shown in FIG. 15, an arm member 72a is fixed to the protruding portion of the operation shaft 72 outside the valve box 71 so as to be integrally rotatable. An L-shaped spring receiving member 76 is fixed in a side view, and a return spring 77 composed of a coil spring is hung over the spring receiving member 76 and the arm member 72a.
The return spring 77 presses and biases the valve body 73 toward the valve receiving portion 71c in a free state, so that the closed state of the valve body 73 is maintained in a state where a predetermined amount of medicine is deposited on the upper surface side of the valve body 73. 12 and 13, the arm member 72a is urged to rotate counterclockwise. When a driving force is applied by the intermittent linkage mechanism 80, the arm member 72a is allowed to rotate clockwise and the valve body 73 can be switched to the open position as shown by the imaginary line in FIG. I have.
An intermittent supply mechanism 70 is provided with the return spring 77 and the valve element 73, and the intermittent supply mechanism 70 is configured to transmit the rotational power of the seed unreeling unit 25 via the intermittent linkage mechanism 80. .

(Intermittent linkage mechanism)
As shown in FIGS. 9, 12, and 15, the intermittent linkage mechanism 80 moves the input gear 81 meshing with the transmission gear 52a rotatably supported by the first relay shaft 52 to the seed unreeling unit 25. The drive shaft 25a is pivotally supported so as to be integrally rotatable. The input gear 81 is configured to be able to intermittently drive the driving force of the first relay shaft 52 via the first minority clutch 53.
That is, when the first minority clutch 53, which is spline-fitted to the first relay shaft 52, is operated on the entry side and engages with the side surface of the transmission gear 52a, the input gear 81 constantly meshed on the outer peripheral side of the transmission gear 52a. The driving force is transmitted to. When the first minority clutch 53 is operated to the disengagement side, the transmission gear 52a enters the idle state, and the power transmission to the input gear 81 is cut off.

  Among the input gears 81, the odd-numbered input gear 81 from the left as shown in FIG. 9 is, as shown in FIG. 15, an input rotator 81A having a gear portion meshing with the transmission gear 52a on its outer periphery, and an input rotator 81A. It is constituted by a combination with an annular rotating plate 81B detachably attached to the side surface of 81A via a fixing bolt 81C, and a plurality of driving pins 82 are protruded from the side surface of the annular rotating plate 81B. ing. The collar 82a is loosely fitted to the drive pin 82, and is configured so that wear of the drive pin 82 due to contact with the link member 83 of the intermittent linkage mechanism 80 can be avoided.

Of the input gears 81, the even-numbered input gears 81 from the left shown in FIG. 9 are not provided with the annular rotating plate 81B or the driving pins 82, but are constituted only by the input rotating body 81A having a gear portion on the outer peripheral side. Have been.
The input gear 81 composed of only the input rotating body 81A is adjacent to the input gear 81 via the interlocking mechanism 50 composed of the relay gear 66, the first converter 60, and the second converter 61 shown in FIGS. It is configured to transmit the driving force to the two drug delivery sections 34 at the matching positions.

The odd-numbered input gear 81 is linked to an arm member 72a via a link member 83 and a link rod 85, as shown in FIGS.
That is, the pivot pin 84 is attached to the front side of the seed unreeling unit 25 via the fixing bracket 87, and the link member 83 is pivotally supported around the axis of the pivot pin 84. The link member 83 has one end fixed to the other end of an urging spring 86 formed of a coil spring fixed to the fixing bracket 87. The urging action of the urging spring 86 causes the link to move. The rear end portion 83A of the member 83 is elastically urged toward a side that always comes into contact with the drive pin 82 on the input gear 81 side.
Accordingly, as shown in FIG. 12, the rear end portion 83A of the link member 83 is in contact with the collar 82a of one driving pin 82 as the input gear 81 rotates clockwise as shown by the solid line. Then, the link member 83 is pushed up as shown by the imaginary line, and the front end portion 83B of the link member 83 pulls the link rod 85 to rotate the arm member 72a clockwise. As a result, the valve body 73 is swung to the open side, and the medicine is dropped and supplied.

  When the rear end portion 83A of the pushed-up link member 83 is disengaged from the collar 82a of the driving pin 82, the rear end portion 83A of the link member 83 is again shown by a solid line by the urging action of the urging spring 86. Then, the next driving pin 82 comes into contact with the collar 82a. In this state, the front end portion 83B of the link member 83 releases the pulling operation of the link rod 85 and pushes back, and the arm member 72a swings and returns counterclockwise by the action of the return spring 77, and at the same time, the valve body 73 also closes. Return to.

[Relation between seeding position and drug spot seeding position]
The spot seeding position of the medicine by the intermittent supply mechanism 70 operating as described above is set as follows in relation to the seeding position by the seeding device 15.
As shown in FIG. 8, when considering the seeding position as a reference, the point seeding position of the medicine is in front of the seed paddy supply unit 26 and slightly laterally outward from the left and right center of the leveling float 19. As in the case where the groove device 37 is provided, the positions are substantially overlapping in the left-right direction, but are slightly outside the center of the leveling float 19.
In FIG. 8, on the front side of the seed paddy supply unit 26, the fertilizer cultivator 32 for fertilization is also provided in a state located slightly laterally inward from the left and right center of the leveling float 19. Since the fertilizer is supplied continuously without being fed, a fertilizer supply line that is continuous in the front-rear direction is formed at a lateral side of the seeding position.

The spot sowing position in the front-rear direction of the medicine based on the sowing position is a seed unloading position of a feeding roll (not shown) at the time of falling of the seed in the seed feeding unit 25, and a positional relationship between the driving pin 82 in the input gear 81, The relationship between the contact position between the driving pin 82 and the link member 83, the relationship between the falling distance of the seed in the seed unreeling unit 25 and the distance of the medicine falling in the intermittent supply mechanism 70, the relationship between the mass of the seed and the medicine, and It changes depending on various factors such as the relationship with the traveling speed of the traveling body 1.
For this reason, in the present invention, the traveling speed of the traveling machine 1 is set to a predetermined speed which is set in advance, the seed rice and the medicine having a predetermined mass are used, and the falling distance of the seed rice and the falling distance of the medicine are set in a predetermined relationship. In the object, the seed-releasing position of the feeding roll by the intermittent linkage mechanism 80, the positional relationship between the drive pin 82 in the input gear 81, and the relationship between the contact position between the drive pin 82 and the link member 83 are determined as follows. ing.

That is, as shown in FIG. 16, one supply position of the seed from the seed unreeling unit 25 is set to the first reference position P1, and the supply position of the medicine by the drug application device 17 closest to the first reference position P1 is set to the second position. Let it be the reference position P2. It should be noted that the circles in FIG. 16 indicate the seeding positions, and the black circles filled in black indicate the dispensing positions.
Then, the separation distance d1 from the first reference position P1 to the second reference position P2 is equal to the second reference position from the seed rice supply positions P1a and P1b adjacent to the first reference position P1 before and after in the traveling direction. It is shorter than the separation distances L1 and L2 to P2 and the separation distances L3 and L4 from the supply positions P1c and P1d of the seed rice at positions adjacent to the first reference position P1 in the left-right direction to the second reference position P2. Like that.

  In this way, the interfering linkage mechanism 80 adjusts the seed release position of the unwinding roll, the positional relationship between the drive pin 82 in the input gear 81, and the relationship between the contact position between the drive pin 82 and the link member 83. The configuration is such that the seeding position by the seeding device 15 to be spot-seeded and the supply position of the medicine by the drug application device 17 are determined in a relatively close predetermined relationship.

[1 of another embodiment]
In the embodiment, the paddy field working machine having the structure including the seeding device 15 as the planting system working device has been described. However, the present invention is not limited to this.
For example, a paddy field working machine having a structure employing a seedling planting device as the planting system working device may be used.
In addition, when the seeding device 15 is used or the seedling planting device is used, the number is not limited to six, but is applied to any one of seven or more or five or less. Can be applied to
Other configurations may employ the same configuration as the above-described embodiment.

[2 of Another Embodiment]
In the embodiment, the powdery and granular material supply device has a structure in which the medicine dispensing device 17 is employed, but the present invention is not limited to this.
For example, a structure adopting the fertilizer device 16 may be used as the granular material supply device.
In the embodiment, both the fertilizer applicator 16 and the medicine applicator 17 are provided, and the medicine applicator 17 is sowed in accordance with the point sowing of the sowing apparatus 15. However, the present invention is not limited to this. Both the seeding and the drug application device 17 may be sowed in accordance with the point sowing of the sowing device 15 or may be sowed in accordance with the seedling planting location of the seedling planting device.
Alternatively, only one of the fertilizer application device 16 and the medicine application device 17 may be provided, and the fertilizer application device 16 or the medicine application device 17 having the fertilizer application device 17 or the fertilizer application device 17 may be sowed as a powder and granular material supply device.
Other configurations may employ the same configuration as the above-described embodiment.

[Third Embodiment]
In the embodiment, as the intermittent supply mechanism 70, a structure in which the plate-shaped valve body 73 is configured to be able to swing and open is exemplified, but the present invention is not limited to this structure. For example, a rotary valve that rotates intermittently may be used as the valve body 73.
Other configurations may employ the same configuration as the above-described embodiment.

[4 of Another Embodiment]
In the embodiment, as the intermittent supply mechanism 70, a plate-shaped valve body 73 is used, which has a structure configured so as to close the supply path in a rearwardly inclined position in which the upper surface side is located lower toward the rear side. Although illustrated, the invention is not limited to this.
For example, the valve body 73 is configured to close the supply path in the horizontal posture, or the supply path is closed in the forward-downward inclined posture, and the supply path is opened by the forward-downward swing, or by the backward-downward swing. It may be of a structure configured to open the supply path.
Other configurations may employ the same configuration as the above-described embodiment.

[5 of Other Embodiments]
In the embodiment, a structure in which the drop start height H1 of the medicine is set at a position higher by a predetermined height H3 than the drop supply height H2 of the seed rice from the seed rice feeder 25 of the seeding device 15 is illustrated. However, it is not limited to this.
For example, the fall start height H1 of the medicine and the fall supply height H2 of the seed rice are set at the same height position, or conversely, the fall start height H1 of the medicine is set lower than the fall supply height H2 of the seed rice. May be.
Other configurations may employ the same configuration as the above-described embodiment.

[Sixth Embodiment]
In the embodiment, an interlocking mechanism 50 that interlocks and connects one seed unreeling unit 25 on the sowing device 15 side and two drug unwinding units 34 on the drug dispensing device 17 side, and one seed unreeling unit 25 on the sowing device 15 side An example of a structure provided with an intermittent linking mechanism 80 that interlocks and links the two intermittent supply mechanisms 70 on the drug dispensing device 17 side is illustrated, but the present invention is not limited to this.
For example, with respect to one seed unreeling unit 25 on the seeding device 15 side, both one medicine dispensing unit 34 on the drug dispensing device 17 side and one intermittent supply mechanism 70 on the drug dispensing device 17 side are connected to each other. The operation of the two seed dispensing units 25 may drive both the drug dispensing unit 34 and the intermittent supply mechanism 70 on one drug dispensing device 17 side.
Other configurations may employ the same configuration as the above-described embodiment.

[Seventh Embodiment]
In the embodiment, the structure in which the intermittent supply mechanism 70 is driven by the intermittent linkage mechanism 80 has been described, but the present invention is not limited to this structure.
For example, although not shown, the valve body 73 of the intermittent supply mechanism 70 may be oscillated by the rotational power of the electric motor. In this case, the electric motor itself is rotated forward or backward, or the electric motor drives the valve body 73 to swing only in one direction of the open side or the closed side, and is operated by using a return spring in the reverse direction. It may be.
In this case, the drive timing of the electric motor is controlled so as to be adjusted in relation to the operation timing of the seeding system working device, and the point seeding position of the intermittent supply mechanism 70 and the point seeding position of the seeding system working device are set to a predetermined value. What is necessary is just to adjust so that it may become a positional relationship.
Other configurations may employ the same configuration as the above-described embodiment.

[8 of Another Embodiment]
In the embodiment, the drug supply hose 35 constituting the powdery material supply path has a structure in which the lower end is formed in a straight line along the vertical direction, but the present invention is not limited to this.
For example, as shown in FIG. 17, the lower end side of the tapered tube 75 at the lower end side of the drug application hose 35 is bent rearward to form a rearward inclined surface 75 c (corresponding to an inclined guide surface) near the lower end portion. You may do so.
Further, at the lower end side of the tapered tube 75, the lower side and the upper side facing backward of the tapered tube 75 are cut off, and a side guide surface projecting laterally to the tapered tube 75 rearward from the rear end 75d. May be formed such that the medicine falling from the rear end 75d is unlikely to diffuse laterally.
Other configurations may employ the same configuration as the above-described embodiment.

[Ninth Embodiment 9]
In the embodiment, the seed paddle subjected to the iron coating treatment is used as the seed paddle by the sowing apparatus 15, but the seed paddle pad is not limited thereto.
For example, it may be configured such that seed rice subjected to a calper coating treatment, seed rice not subjected to a coating treatment, or seed rice such as wheat or vegetables is sown in a field.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a direct sowing machine provided with a sowing device 15 as a planting system working device, and a rice planting machine provided with a seedling planting device as a planting system working device.

1 traveling machine 15 planting and seeding work equipment (seeding equipment)
16 Fertilizer application device 17 Powder and granular material supply device (medicine application device)
24 seed paddy hopper 25 seed pad feeding unit 33 powder hopper 34 powder feeding unit 35a upstream downflow pipe 50 linking mechanism for feeding (interlocking mechanism)
53 Minority clutch 70 Intermittent supply mechanism 71 Valve mounting pipe part (valve box part)
72 Support shaft (operation shaft)
72a Operation arm 73 Valve element 75 Throttle section 75c Inclined guide surface 75e Side guide surface 80 Linkage mechanism (intermittent linkage mechanism)
81 Input gear 82 Drive pin 83 Link member P1 First reference position P2 Second reference position d1 Separation distance L1, L2 Separation distance L3, L4 Separation distance

Claims (8)

A traveling body capable of traveling and moving in a field,
A seeding device that supplies seed rice to the field,
A drug application device having a supply path for supplying a drug to a field,
Before Ki播 species apparatus, Yes configured to supply position to the fields of rice seeds are scattered at predetermined intervals in the traveling direction of the vehicle body,
The drug dispensing device is configured such that an intermittent supply mechanism is interposed in the middle of the supply path, and supply positions of the medicine to the field are scattered at predetermined intervals in the traveling direction of the traveling machine,
The supply path extends at least vertically below the intermittent supply mechanism,
The drug dispensing device includes a feeding portion at a lower portion of a drug hopper that stores a drug,
The dispensing unit of the dispensing device is located above the dispensing unit of the seeding device,
The intermittent supply mechanism is provided in a supply path at a position distant from the delivery section of the drug dispensing device below.
The dispensing device is disposed in front of the seeding device, and the intermittent supply mechanism disposed on the dispensing device is driven by an arm member that receives a driving force to the intermittent supply mechanism. A paddy working machine that is connected so that it can be interlocked with the connection mechanism. The intermittent supply mechanism includes a plate-shaped valve body that opens and closes the supply path,
The valve element is
One end is pivotally supported by the supply path via a support shaft, and the other end is configured to be swingable,
With respect to an orthogonal direction substantially orthogonal to the vertical direction in which the supply path extends, it is inclined downward from the one end to the other end,
The other end side is in a closed posture intersecting the supply path in an inclined posture located below the orthogonal direction passing through the one end side, and the other end side is in an orthogonal direction passing through the one end side compared to the closed posture. 2. The paddy working machine according to claim 1, wherein the paddy field working machine is configured to be in an open position in which the supply path is opened with swinging to a side located further below. 3.   The supply position of the seed rice to the field by the seeding device and the supply position of the drug to the field by the drug application device, and one supply position of the seed rice by the seeding device as a first reference position, the first reference position The closest supply position of the medicine by the dispensing device is the second reference position, and the separation distance from the first reference position to the second reference position is different from the first reference position in the traveling direction. Separation distance from the supply position of the seed rice at the front and rear adjacent positions to the second reference position, and separation from the supply position of the seed rice at the position adjacent to the first reference position in the left-right direction to the second reference position 3. The paddy working machine according to claim 1, wherein the paddy field working machine is set to be shorter than the distance.   The support shaft of the plate-shaped valve element that opens and closes the supply path is located on the front side of the supply path in the traveling direction of the traveling body, and in the closed position of the valve element, the upper surface of the valve element is inclined backward and downward. The paddy working machine according to claim 2 or 3, wherein the paddy field working machine is configured as follows. Of the supply path, a valve mounting pipe part that houses a plate-shaped valve body that opens and closes the supply path is formed to have a larger diameter than a cylindrical upstream downflow pipe upstream of the valve mounting pipe part. , before Symbol valve body paddy working machine according to any one of claims 2-4, which is configured such that the closed position by the abutment of the lower side with respect to the lower end of the upstream flow-down pipe.   In the supply path, below the plate-shaped valve element that opens and closes the supply path, a throttle unit that narrows the flow path cross-sectional area of the supply path and collects the medicine toward the flow path center side of the supply path. The paddy field working machine according to any one of claims 2 to 5, which is provided.   At the lower end of the supply path, there is provided a channel-shaped groove generator having a rear side opened in a plan view, and at the lower end of the supply path, the medicine is directed toward the open rear side of the groove generator. The paddy field working machine according to any one of claims 1 to 6, wherein an inclined guide surface having a rearwardly-lowering posture for guiding the work is formed.   8. The paddy field working machine according to claim 7, wherein a lower side portion of the supply path is provided with a side guide surface that suppresses the diffusion of the medicine in the left-right direction behind the rear end of the inclined guide surface. .

Images