JP2002238317A - Fertilizing device of rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the fertilizing device of a rice transplanter, formed so that a granular fertilizer stored in a fertilizer hopper is delivered with a delivering mechanism and then fed into furrow openers disposed in the seedling transplanter, which can simply deliver and feed the fertilizer by the use of the fertilizing device. SOLUTION: An agrochemical hopper 91 for storing a granular agrochemical is detachably disposed in a fertilizer hopper 13. The lower end exit 90 of an agrochemical hopper 91 is disposed close to one portion of a delivery roll R in a delivery mechanism 15, and the fertilizer and the agrochemical are delivered by the rotation of the delivery roll R. A plurality of kinds of roll portions r2, r3 which have different delivery amounts per unit rotation are formed in parallel in the axial direction of the roll in the agrochemical delivery site in the delivery roll R, and the roll portions r2, r3 can independently be closed or opened with shutters.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer application device for a rice transplanter, which is configured so that a powdery or granular drug can be buried in a field together with a fertilizer.

[0002]

2. Description of the Related Art For example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent Application Laid-Open No. 000-83427, a powdery and granular fertilizer stored in a fertilizer hopper and a powdery and granular drug stored in a chemical hopper are respectively fed by a predetermined amount by a rotary feeding mechanism, and the fed fertilizer is fed. And a chemical are known, which are transferred by wind power to a seedling planting device through a common supply hose and supplied to a groove generator provided for each planting line.

[0003]

[Problems to be solved by the invention]

[0004] In the above-mentioned fertilizer application device, the structure is complicated because a structure is employed in which the fertilizer and the medicine are fed by separate feeding mechanisms. Further, the medicine hopper is mounted in the fertilizer hopper, but an opening through which the medicine hopper penetrates must be formed in the fertilizer hopper because the medicine feeding mechanism is provided outside the fertilizer feeding mechanism. However, when performing fertilization only, if the drug hopper is removed to increase the amount of fertilizer stored, it is necessary to close the opening for drug hopper penetration formed in the fertilizer hopper, and specification changes are troublesome. Had become.

The present invention has been made in view of such a point, and it is a main object of the present invention to make it possible to easily feed out and supply a chemical using a fertilizer.

[0006]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

(Structure) According to a first aspect of the present invention, there is provided a fertilizer application method for a rice transplanter configured to feed out a granular fertilizer stored in a fertilizer hopper by a feeding mechanism and to supply the fertilizer to a ditcher provided in a seedling planting apparatus. In the device, a drug hopper for storing powdery and granular drugs is provided in the fertilizer hopper in a detachable manner, and a lower end outlet of the drug hopper faces a part of a feeding roll in the feeding mechanism, and rotation of the feeding roll causes the fertilizer to rotate. A plurality of types of roll portions having different feeding amounts per unit rotation are formed in parallel in a roll axis direction at a drug feeding portion of a feeding roll, and each roll portion is independently formed by a shutter. It can be opened and closed.

(Action) According to the above configuration, by mounting the medicine hopper in the fertilizer hopper, the fertilizer and the medicine can be fed out by using a common feeding mechanism, and a specification in which fertilization and drug application are performed simultaneously can be obtained. . Also, by removing the medicine hopper, it is possible to return to the specification in which only fertilization is performed.

[0009] While the amount of fertilizer applied per unit area is changed and adjusted depending on the type of fertilizer, etc., the amount of application of the chemical per unit area is generally constant, and the rotation of the feeding roll per unit time is generally large. If the number is changed and the amount of fertilization is adjusted, the amount of drug applied using the same feeding roll will change. In such a case, the use form of the plurality of roll portions for drug application can be changed to reduce the change in the dose. For example, when two types of roll portions for drug application are provided, when the rotation speed of the feeding roll is increased to set a large amount of fertilization, a roll portion with a large feeding amount is closed and a roll portion with a small feeding amount is set. When setting the fertilizer application amount to a medium amount by lowering the rotation speed of the feeding roll, only the roll portion with a small feeding amount is closed and only the roll portion with a large feeding amount is used. When setting the fertilizer amount to a small amount by further reducing the rotation speed of, by opening both the roll portion with a small amount of feed and the roll portion with a large amount of feed,
It is possible to reduce the change in the amount of applied medicine regardless of the change in the rotation speed of the feeding roll.

(Effects) Therefore, according to the first aspect of the present invention, since fertilization and application of medicine are performed by a common feeding mechanism, the feeding structure is simpler than the conventional structure in which fertilization and application of medicine are performed by separate feeding mechanisms. Thus, the method can be implemented at low cost, and it is easy to switch between the specification of fertilization only and the specification of fertilization and application of medicine at the same time, which is excellent in practicality.

Further, even if the rotation speed of the feeding roll is changed to change the amount of fertilizer while the feeding mechanism is shared, the change in the dose can be suppressed by selectively using a plurality of rolls for drug application, and the usability is improved. It has become excellent.

[Structure, operation and effect of the invention according to claim 2]

(Structure) The invention according to claim 2 is the fertilizer application device for a rice transplanter according to claim 1, wherein the feeding recesses are formed at the same pitch in the circumferential direction on the outer periphery of each roll portion for medicine. It is characterized in that the phase in the circumferential direction of the feeding concave portion in each roll portion is shifted from each other.

(Action) According to the above configuration, when the rotation speed of the feeding roll is set to be low to reduce the amount of fertilization, a plurality of roll portions for drug application are used together to suppress a decrease in the dose. In this case, since the phases of the plurality of roll portions in the circumferential direction of the dispensing concave portion are shifted, the pitch of the plurality of roll portions for dispensing in the circumferential direction of the plurality of roll portions as a whole is: It becomes small and even if the rotation speed of the feeding roll is low,
Dispensing of medicine close to continuous dispensing with a short interruption time is performed.

(Effects) Therefore, according to the second aspect of the present invention, even when the rotation speed of the feeding roll is set low to reduce the amount of fertilization, it is possible to perform drug administration with excellent continuity, and to achieve uniform application. It is possible to prevent the occurrence of phytotoxicity by administering the medicine.

[Structure, operation and effect of the invention according to claim 3]

(Structure) According to a third aspect of the present invention, there is provided a fertilizer application method for a rice transplanter configured to feed a granular fertilizer stored in a fertilizer hopper by a feeder mechanism and to supply the fertilizer to a ditcher provided in a seedling planting apparatus. In the apparatus, a drug hopper for storing powdery and granular drugs is provided in the fertilizer hopper, and a lower end outlet of the drug hopper is provided at a part of a feeding roll in the feeding mechanism, and the fertilizer and the drug are rotated by rotating the feeding roll. The lower part of the fertilizer hopper is provided with a mesh for preventing the flow of the fertilizer lump from flowing down, and the lower part of the medicine hopper is configured to penetrate and support the opening formed by cutting out the mesh. It is characterized by having.

(Function) According to the above construction, the lower end of the medicine hopper is stabilized by penetrating and supporting the lower part of the medicine hopper through the mesh body. Can be correctly opposed to each other, and the medicine and fertilizer can be correctly flowed down to a predetermined portion of the feeding roll.

(Effects) Therefore, according to the third aspect of the present invention, it is possible to accurately position the lower end outlet in the medicine hopper with a simple structure that effectively uses the fertilizer application network provided in the fertilizer application hopper. , It became possible to perform good fertilization and application of medicine.

[Structure, operation and effect of the invention according to claim 4]

(Structure) According to a fourth aspect of the present invention, there is provided a fertilizer application method for a rice transplanter configured to feed out a powdery or granular fertilizer stored in a fertilizer hopper by a feeding mechanism and supply the fertilizer to a ditcher provided in a seedling planting apparatus. In the apparatus, a drug hopper for storing a powdery or granular drug in the fertilizer hopper is detachably provided, and a lower end outlet of the drug hopper faces a part of a feeding roll in the feeding mechanism. The medicine hopper is configured to be fed out, and a slide shutter plate that can open and close the lower end outlet of the medicine hopper is mounted slidably up and down along the outer surface of the medicine hopper.

(Operation) According to the above configuration, the slide shutter plate is operated to close the lower end exit of the medicine hopper and then the medicine hopper is removed, so that the remaining medicine can be collected without spilling. In this case, since the bendable slide shutter plate is mounted so as to be vertically slidable along the outer surface of the hopper, the lower end outlet of the medicine hopper can be opened and closed by operating the upper end of the slide shutter plate.

(Effect) Therefore, according to the fourth aspect of the present invention, the lower end outlet of the medicine hopper, which is out of reach, can be easily and easily opened and closed by operation on the upper outside of the hopper.
It becomes excellent in handling.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a side view of a riding rice transplanter equipped with a fertilizer applicator constructed in a six-row planting specification, and FIG. 2 shows a plan view of the rice transplanter. In this rice transplanter, a six-row planting seedling planting device 7 is hydraulically driven at the rear of a traveling machine body 3 that is driven by four wheels with a steerable front wheel 1 and a non-steerable rear wheel 2. Lift link mechanism 6
The driver seat 27 is connected via the
Has a basic structure in which a fertilizer applicator A is provided at a rear portion. An engine E is mounted on a front portion of the traveling body, and its output is transmitted to a hydrostatic continuously variable transmission (HST) 5 capable of switching between forward and reverse, and the shift output is input to a transmission case 4. After further gear shifting, the power is transmitted to the front wheel 1 and the rear wheel 2, and the working power taken out of the transmission case 4 is transmitted to the seedling planting device 7 via the transmission shaft 70. .

In the seedling planting apparatus 7, there are six sets of seedling rests 12 on which seedlings are placed and reciprocally move sideways with a constant stroke, and seedlings are cut out from the lower end of the seedling rest 12 one plant at a time and planted. A rotary planting mechanism 9, three leveling floats 11 for leveling the planned planting site in the field, and the like are provided, and the planting mechanism 9 is provided at the rear left and right of the three planting cases 8 arranged in parallel. Two sets of each are mounted.

Next, the fertilizer applicator A will be described. Figure 1
As shown in FIG. 7, the fertilizer applicator A includes a fertilizer hopper 13 for storing powdered and granular fertilizer, four sets of feeding mechanisms 15 for feeding the fertilizer from the fertilizer hopper 13 by a predetermined amount, and a seedling planting apparatus for feeding the fed fertilizer. 7, a supply hose 14 that leads to six groove generators 52 attached to a leveling float 11, an electric blower 16 that feeds a conveying wind to each supply hose 14, and an electric blower 1.
6 is composed of a ventilation duct 17 for distributing and supplying the conveying air generated to the fertilizing hoses 14 and the like. The fertilizer applicator A is configured so that fertilizer application and drug application can be performed at the same time by mounting a small drug hopper 91 storing a drug in the fertilizer hopper 13.

As shown in FIGS. 11 and 19, the feeding mechanism 15 is constituted by two sections as a unit, and the left and right ends of the four sets of the feeding mechanism 15 perform feeding by two sections. The middle two sets are one of two
By performing the feeding only by the line, six lines are fed as a whole while using four sets of the feeding mechanisms 15 in units of two lines.

Each feeding mechanism 15 has a feeding recess a on its outer periphery.
Are formed at a predetermined pitch along the circumferential direction, so that a feeding roll R is rotatable about a horizontal horizontal axis.
Roller R
The driven gear 19G provided at the outer end of the drive shaft 21 is rotationally driven by being engaged with the drive gear 21G of the drive shaft 21. Further, the brush 22 for cutting off acts on the outer periphery of the feeding roll R to stabilize the feeding amount.

The unwinding roll R has three sets of roll portions r1 to r3 having different unwinding amounts per rotation, and two sets (six) of roll portions r1 to r3 are symmetrically arranged in parallel. It has a structure in which the driven gear 19G is provided at one end, and is externally fitted to the hollow roll shaft 19 so as to be integrally rotatable. Here, one roll of three roll portions r1
The delivery amount per rotation of .about.r3 is set such that the outermost roll portion r1 is the largest, the innermost roll portion r2 is the next largest, and the middle roll portion r3 is the smallest. As shown in FIG. 13, the feeding recesses a formed on the outer circumference of the two inner roll portions r2 and r3 are arranged at the same pitch (60 ° in this example), and both feeding recesses a Half pitch from each other (3 in this example)
0 °).

The roll case 18 has a vertically divided structure of an upper case 18A connected to the lower end of the fertilizer hopper and a lower case 18B connected to the lower end thereof, and is integrally formed below the lower case 18B. The front ends of the two outlet pipes 18C are inserted and connected to the air ducts 17, respectively, and the supply hose 14 is connected to the rear end of each outlet pipe 18C. Further, the feeding roll R is supported so that the axis of the roll shaft 19 is positioned on the division surface of the roll case 18, and the lower case 18B is connected to the upper case 18A.
, The feeding roll R can be easily removed. In addition, in the central two sets of feeding mechanisms 15 that feed one line, the supply hose 14 is connected to only one of the outlet pipes 18C for the two lines,
The rear end of the outlet pipe 20 that stops feeding is closed by the cap 20. Each roll case 18 has a swing shutter 7.
2, a discharge port 71 connected to a discharge hose 73 is formed so that the fertilizer remaining in the fertilizer hopper 13 can be discharged and collected in the lower abdomen of the machine body.

The lower part of the upper case is narrowed down in a funnel shape.
5, five partition walls 24 slidingly contacting the outer periphery of each of the roll portions r1 to r3 are formed in parallel, and, as shown in FIG. 14, the six passages formed by these partition walls 24 are independently formed by shutters s. It can be opened and closed.

Each shutter s is, as shown in FIG. 15, a shutter plate 2 made of an elastically deformable thin stainless steel plate.
A handle 25 made of a bar is connected to one end of the handle 6, and the handle 25 protruding from the roll case 18 is formed.
When the shutter plate 26 is pushed in, the shutter plate 26 is bent and deformed along the inner surface of the case and is pushed up and retracted to open the passage, and by pulling out the handle 25, the passage is closed by the shutter plate 26.

Therefore, by selectively opening and closing three shutters s for one line and selecting and combining the roll portions r1 to r3 used for feeding, the feeding amount can be adjusted in five stages. As shown in FIG. 19, this five-step adjustment can be used in the case of a specification in which the chemical hopper is removed and only fertilization is performed. The amount is adjusted by changing the rotation speed of the feeding roll R. In addition, in the central two sets of feeding mechanisms 15 for feeding one line, the shutter can be stopped by closing all three shutters s on one side, and the cap 20 is attached to the outlet pipe 18C. As a result, wasteful outflow of the conveying air is prevented.

The feed amount can be adjusted in addition to the above means.
This can also be performed by changing the connection position between the passive arm 39 and the push / pull rod 40 in the longitudinal direction of the arm. In other words, as the connection position between the passive arm 39 and the push / pull rod 40 is closer to the arm axis, the swing angle of the passive arm 39 with respect to the stroke of the push / pull rod 40 increases, and the number of roll rotations per unit time increases. (The roll rotation speed increases), and the payout amount increases. Conversely, the farther the connecting position between the passive arm 39 and the push / pull rod 40 is away from the arm axis, the smaller the swing angle of the passive arm 39 with respect to the stroke of the push / pull rod 40, and the number of roll rotations per unit time (Roll rotation speed becomes slower), and the feeding amount increases.

The fertilizer hopper 13 has two large-volume hopper sections 13a located at the left and right ends, and a pair of
It is made of a see-through resin made by integrally forming the strip small-capacity hopper portion 13b. Small capacity hopper 1
3b has a front portion recessed from the large-capacity hopper portion 13a, and a rear portion of the driver's seat 27 enters and is disposed here. In this way, by introducing the fertilizer hopper 13 whose central portion is recessed, the fertilizer applicator A can be compactly deployed without a large gap between the seedling rest 12 and the operating unit, and the overall length of the machine can be reduced. It is planned. Further, a lid 28 provided at the upper end of the fertilizer hopper 13 is an integrally formed product over the entire width of the hopper, and is swingably opened and closed around a fulcrum Z provided at a rear portion as shown in FIG. The rear wall of the fertilizer hopper 13 is provided with an optical sensor 62 for detecting the remaining amount of the fertilizer in each of the hopper portions 13a and 13b.

The driving structure of the feeding mechanism 15 will be described. As shown in FIGS. 4 to 7, each of the four roll cases 1
A single drive shaft 21 composed of a hexagonal shaft is rotatably supported over the rear portion of the drive shaft 8, and the drive gear 21G described above is fitted on the drive shaft 21 so as to be relatively rotatable. An intermeshing fertilizer clutch 33 is interposed between the drive shaft 21 and the drive gear 21G. By turning on and off the fertilizer clutch 33, each feeding mechanism 15 can be independently turned on and off. Has become. These fertilizing clutches 33 are linked to three fertilizing clutch levers 32 disposed near the side of the driver's seat 27, and are fertilized according to the planting stalls that are stopped in the case of a few plantings near the ridge. When the vehicle is stopped, the clutch is disengaged. The central fertilizing clutch lever 32 is linked to the fertilizing clutches 33 in the central two sets of feeding mechanisms 15 that perform feeding by one line, and each fertilizing clutch lever 32 can stop fertilizing by two lines. It has become.

As shown in FIGS. 1 and 4, a transmission shaft 35 for driving rear wheels for transmitting power from the transmission case 4 to a rear axle case 34 at the rear of the vehicle body is disposed below the traveling vehicle body 3. A power take-out case 36 for distributing power from the transmission shaft 35 to the fertilizer applicator A is provided. The power take-out case 36 is provided with a crank arm 37 that is driven to rotate around the horizontal axis by receiving the power of the traveling system, and the crank arm 37 and a passive arm provided on the drive shaft 21 for driving the feeding mechanism. The arm 39 is interlocked and connected via a push-pull rod 40, and the crank arm 3
The passive arm 39 is driven to swing back and forth with the rotation of the drive arm 7. By driving the fertilizer applicator A with the power of the traveling system in this way, even if the running speed is changed or the planting pitch (between plants) in the seedling planting apparatus 7 is changed, the amount of fertilizer per unit traveling distance, that is, Therefore, the fertilizer application amount per unit area can be maintained at the adjusted set amount.

As shown in FIG. 8 and FIG.
The drive shaft 21 and the drive shaft 21 are linked to each other via a one-way drive mechanism 41, and the drive shaft 21 is continuously pulsated in a certain direction (clockwise in the figure) with each of the forward and backward movements of the passive arm 39. It is configured to rotate. here,
The one-way drive mechanism 41 includes a first one-way clutch 4 that transmits only the clockwise swing of the passive arm 39 to the drive shaft 21.
2, an operation arm 43 mounted on the drive shaft 21, a reversing link mechanism 44 for reversing the swing of the passive arm 39 and transmitting the same to the operation arm 43, and a clockwise swing of the operation arm 43 only for the drive shaft 21. And a second one-way clutch 45 for transmitting the rotation of the driven arm 39 to the drive shaft 21 in the clockwise direction by the forward and backward movements of the passive arm 39. It is configured to rotate sequentially (clockwise).

Next, a structure in which the chemical hopper 91 is mounted on the fertilizer hopper 13 to perform fertilization and application of medicine at the same time will be described. As shown in FIGS. 7 and 10, the medicine hopper 91 has a hopper body 91 </ b> A formed by resin in a shape in which an upper end is opened and a lower part is narrowed, and is vertically swingable via a fulcrum shaft 92 at the upper end. A pivot 91 is attached to a support arm 93a of a mounting bracket 93 hooked and mounted on the upper end of the rear wall of the fertilizer hopper 13.
, The four fertilizer hoppers 91 are suspended and supported inside the two large-capacity hopper portions 13a and the two small-capacity hopper portions 13b of the fertilizer hopper 13, respectively.

A projecting portion 94 is integrally formed in the center of the upper end of the front surface of the hopper body 91A at the left and right sides.
An elastically deformable lock piece 95 is continuously provided at the front end of B. When the lid 91B is closed, the lock piece 95 is moved to the projecting portion 9.
4 is elastically engaged so that the closed state is maintained.

As shown in FIG. 16, the lower portion of the hopper body 91A is narrowed down to a small width.
At the lower end of 1C, a pair of left and right outlets 90 for drug flow are formed, and a slide shutter plate 96 for opening and closing the lower end outlet 90 is provided along the front outer surface of the hopper body 91A. The slide shutter plate 96 is made of a thin stainless steel plate that is easily elastically deformed, and has a structure in which a handle 97 formed by bending a bar is connected to the upper end thereof. Then, a concave groove m formed on the front surface of the hopper main body 91A.
Along the front side of the hopper main body 91A, and is also guided from the outside of the front surface by a guide plate 98 made of a metal plate provided and fixed on the front surface of the hopper body 91A, so that it can be smoothly slid up and down. The slide shutter plate 96 is configured so as to be bent and inserted into the hopper from the front surface of the lower end of the narrowing portion 91C to open and close the lower end outlet 90.

The guide plate 98 is attached and fixed to the medicine hopper 91 with two upper and lower screws 99 with a handle 97 sandwiched between the guide plate 98 and the hopper front wall.
Reference numeral 9 also functions as a guide member for guiding the handle 197 in the vertical direction.

Narrowing section 91 in hopper body 91A
At the lower end of C, a rubber boot 100 is fitted to the outside, and the lower part of the boot 100 is fitted to the partition wall 25 of the feeding mechanism 15 so that the medicine flowing down from the lower end outlet 90 is positioned at the center of the feeding roll R. The four side roll portions r2 and r3 are guided and supplied.
That is, one row of the drug flows down from each of the pair of left and right lower end outlets 90 formed in the drug hopper 91 and is fed out by the two roll portions r2 and r3 on the center side and fed out by the outer roll portion r1. The fertilizer is mixed with the fertilizer and is led to the outlet pipe 18C. As shown in FIG. 12, the medicine hopper 91 has two sets of feeding mechanisms 15 at the center for feeding one piece.
One of the pair of left and right lower end outlets 90 formed in the boot 1
By closing by 00, one drug delivery is performed.

In the specification in which the fertilizer and the medicine are fed by the common feeding roll R, the change in the amount of the fertilizer to be fed depends on the rotation speed of the feeding roll R.
In this case, while the amount of fertilizer applied per unit area is changed and adjusted depending on the type of fertilizer, etc., the amount of application of the chemical per unit area is generally constant, and the rotation of the feeding roll per unit time is generally large. If the number is changed and the amount of fertilization is adjusted, the amount of drug applied using the same feeding roll will change. In such a case, the usage of the two roll portions r2 and r3 used for feeding the medicine can be changed to reduce the change in the dose.

For example, when the roll rotation speed is increased to set a large amount of fertilization, the roll portion r2 having a large amount of feeding is used.
Is closed by the shutter s and the roll portion r with a small feeding amount
When using only 3 and setting the fertilizer amount to a medium amount by lowering the roll rotation speed, close the roll portion r3 with a small feed amount and use only the roll portion r2 with a large feed amount. When setting the fertilizer amount to a small amount by further reducing the rotation speed, the roll part r2
Also, by opening both the roll portion r3 with a small feeding amount, it is possible to suppress a large change in the drug feeding amount regardless of a change in the rotation speed of the feeding roll R.

In the lower part of the fertilizer hopper 13, in order to prevent the fertilizer mass hardened by absorbing moisture from flowing down to the feeding mechanism 15 and to prevent the flow of the fertilizer from being obstructed by the bridging phenomenon, A coarse mesh 55 formed of resin is horizontally fitted via a locking claw 56. As shown in FIG. 19, when the chemical hopper 91 is detached and fertilization is performed only as shown in FIG. 19, the net 55 is formed in a grid shape as shown in FIG. In the specification in which the fertilizer application and the drug application are performed at the same time with the attachment 91, as shown in FIG. 18, the net 55 is replaced with a net 55 having a large opening 57 through which the narrowing portion 91C of the medicine hopper 91 penetrates. Here, the opening 57 of the mesh body 55 is set to a size that fits the narrowing-down portion 91C of the medicine hopper 91 and is positioned right and left, so that the posture of the attached medicine hopper 91 is stably held. ing.

In recent years, the use of organic fertilizers has been reconsidered in order to make rice with excellent taste, and pellet-like fertilizers using rapeseed oil cake and the like have been used.
This organic fertilizer has a larger particle size than a general chemical fertilizer, and it is expected that clogging is likely to occur with a conventional feeding mechanism, and that smooth and stable feeding is difficult. Therefore, when using such organic fertilizer in the form of pellets, as shown in FIG. 21, while replacing the roll case 18 from which the partition wall 24 has been removed in one section, the feeding roll R itself, It is preferable to replace the roll portion r4 provided with the horizontally extending feeding concave portion a in which a single line is formed as a series with a pair of roll portions (two lines).

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is an overall plan view of a riding rice transplanter.

FIG. 3 is a cross-sectional plan view of the fertilizer hopper.

FIG. 4 is a rear view of the fertilizer application device.

FIG. 5 is a front view of the fertilizer application device.

FIG. 6 is a side view of the fertilizer application device.

FIG. 7 is a side view in which a part of the fertilizer is cut away.

FIG. 8 is a side view showing a drive structure of the feeding mechanism.

FIG. 9 is a cross-sectional plan view showing a driving structure of the feeding mechanism.

FIG. 10 is a longitudinal sectional side view of a feeding mechanism.

FIG. 11 is a vertical cross-sectional front view showing a feeding section for two lines.

FIG. 12 is a vertical cross-sectional front view showing a single-row feeding portion;

FIG. 13 is a side view showing a part of a feeding roll.

FIG. 14 is a plan view of a shutter opening / closing portion in the roll case.

FIG. 15 is a perspective view of a single shutter.

FIG. 16 is an exploded perspective view showing the medicine hopper and its mounting structure.

FIG. 17 is a longitudinal sectional side view showing a lower end portion of the medicine hopper.

FIG. 18 is a plan view of a mesh used in the simultaneous fertilization and medicine application processing specification.

FIG. 19 is a vertical cross-sectional front view showing a feeding section for two rows set to a specification for performing only fertilization.

FIG. 20 is a plan view of a net used in the fertilization specification.

FIG. 21 is a vertical cross-sectional front view showing a feeding part modified to a specification for organic fertilizer.

[Explanation of symbols]

 7 Seedling planting device 13 Fertilizer hopper 15 Feeding mechanism 52 Groove device 55 Netting 57 Opening 90 Lower end exit 96 Slide shutter plate a Feeding concave portion R Feeding roll r2 Roll part r3 Roll part s Shutter

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B052 BC05 BC08 BC09 BC16 CA14 EB08 2B060 AA02 BA04 BA07 BA09 BB07 BB08 2B121 CB09 CB20 CB24 CB33 CB46 CB61 CB66 EA26 FA05

Claims (4)

[Claims] 1. A fertilizer device of a rice transplanter configured to feed a granular fertilizer stored in a fertilizer hopper by a feeding mechanism and to supply the fertilizer to a ditcher provided in a seedling planting device. A medicine hopper for storing granular medicine is detachably provided, and a lower end outlet of the medicine hopper is provided at a part of a feeding roll in the feeding mechanism, and the fertilizer and the drug are fed by rotation of the feeding roll, A plurality of types of roll portions having different feeding amounts per unit rotation are formed in parallel in the roll axis direction at a medicine feeding portion of the feeding roll, and each roll portion is configured to be independently openable and closable by a shutter. Fertilizer application equipment for rice transplanters. 2. The fertilizer applicator for a rice transplanter according to claim 1, wherein the feeding recesses are formed at the same pitch in the circumferential direction on the outer periphery of each roll portion for medicine, and the circumferential direction of the feeding recesses in each roll portion. A fertilizer application system for a rice transplanter, characterized in that the phases of the fertilizer are shifted from each other. 3. A fertilizer device of a rice transplanter configured to feed a granular fertilizer stored in a fertilizer hopper by a feeder mechanism and to supply the fertilizer to a ditcher provided in a seedling planting device. A medicine hopper for storing granular medicine is provided, and a lower end outlet of the medicine hopper is provided at a part of a feeding roll in the feeding mechanism, and the fertilizer and the drug are fed by rotation of the feeding roll. A rice transplanter, which is provided with a net for preventing the flow of fertilizer lumps from flowing down, and configured to penetrate and support the lower part of the drug hopper through an opening formed by cutting out the net. Fertilizer application equipment. 4. A fertilizer application device of a rice transplanter configured to feed out a granular fertilizer stored in a fertilizer hopper by a feeding mechanism and to supply the fertilizer to a ditcher provided in a seedling planting device. A medicine hopper for storing granular medicine is detachably provided, and a lower end outlet of the medicine hopper is provided on a part of a feeding roll in the feeding mechanism, and the fertilizer and the drug are fed by rotation of the feeding roll, A fertilizer apparatus for a rice transplanter, wherein a bendable slide shutter plate for opening and closing a lower end outlet of the medicine hopper is vertically slidably mounted along an outer surface of the medicine hopper.