JP2002027892A - Agrochemical spreader for rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agrochemical spreader for a rice transplanter capable of directly spreading an agrochemical over a seedling mat, uniformly and efficiently impregnating the seedling mat with the agrochemical and also uniformizing the impregnation time of the agrochemical, thus enabling the effect of the agrochemical to be exerted efficiently. SOLUTION: This agrochemical spreader for a rice transplanter is characterized by having such a mechanism that an agrochemical is fed through the reverse face of a seedling stand 25 toward the obverse face and issued on the surface of the seedling stand 25 so as to penetrate the agrochemical via the reverse side of a seedling mat (a) into it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying device for a rice transplanter.

[0002]

2. Description of the Related Art Conventionally, planting seedlings grown in a nursery box in a field using a rice transplanter has become a modern mechanized seedling planting method.

[0003] In this case, as a method of spraying chemicals for controlling the main pests occurring before heading, a method of spraying an osmotic agent into a nursery box immediately before planting rice and controlling the pests generated after transplanting is adopted. It had been.

[0004] In recent years, admixtures that simultaneously prevent pests and the like that occur after the middle stage of rice cultivation, which are not targeted by box application drugs, that is, long-lasting box application agents have also emerged.

[0005] However, since this long-lasting box application needs to be carefully sprayed in a predetermined amount so as to prevent unevenness in the seedling mat stored in the seedling box immediately before rice transplanting, it is often used immediately before rice transplanting. Work such as spraying quantitatively carefully
It was very laborious and cumbersome.

In order to solve such an obstacle, a chemical spraying device is mounted above the seedling mounting table of the rice transplanter, that is, at a position facing the seedling mounting surface, and the seedlings placed on the seedling mounting table of the rice transplanter are mounted. A method has been considered in which a chemical is directly sprayed onto a mat, the seedling is cut from the seedling mat with a planting nail, and the seedling is transplanted to a field.

[0007]

However, when the medicine spraying device is arranged above the seedling mounting table as described above, the medicine is sprayed from above the seedlings, and the medicine hits the seedlings. There is a risk of not being sprayed enough on the seedling mat,
In addition, the time required for the seeds to disturb the seedling mat due to the disturbed seedlings varies depending on the interference of the seedlings. There is a possibility that the amount may be different, and when the seedlings are actually cut and planted by the planting claws, the amount and concentration of the drug may be different for each cut seedling, and a uniform drug effect may not be expected.

[0008]

According to the present invention, a rice plant is characterized in that a chemical is sent from a back surface of a seedling mounting table to a front surface, and is discharged onto the surface of the seedling mounting table so that the chemical permeates the seedling mat from the back side. It is intended to provide a medicine spraying device for the machine.

[0009] It is also characterized in that the ejection of the medicine is performed in the vicinity of the seedling removal outlet.

The present invention is also characterized in that a medicine pumping mechanism for pumping medicine and a longitudinal feed roller drive shaft of a seedling mat are connected in an interlocking manner.

The present invention is also characterized in that a medicine pumping mechanism for discharging medicine and a seedling vertical pick-up amount adjusting mechanism are connected in an interlocked manner.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a medicine is sent from the back of a seedling table to the surface by a medicine pumping mechanism and discharged to the surface of a seedling table by a medicine discharge nozzle, whereby the medicine is transferred from the back side of the seedling mat. I decided to penetrate.

Therefore, compared with the case where the medicine is sprayed from above the seedling mat, the medicine can be directly sprayed on the seedling mat, the impregnation of the medicine can be performed efficiently and uniformly, and the impregnation time of the medicine can be uniform. The chemical content of the cut seedlings can be averaged, and the chemical effect can be efficiently exhibited.

[0014] Further, the chemical pumping mechanism is provided on the back side of the seedling table near the seedling outlet of the seedling extracting plate, and the chemical discharge nozzle communicating with the chemical pumping mechanism is arranged slightly above the seedling extracting outlet. Chemicals can be sprayed on the first line of the forefront of the seedling mat so that the seedlings can be impregnated with the chemicals immediately before planting as much as possible.

In addition, since the medicine pumping mechanism and the longitudinal feed roller drive shaft of the seedling mat are operatively connected to each other, there is no need to separately provide a driving source for the medicine pumping, and the medicine is fed in conjunction with the vertical feed operation of the seedling mat. The pumping can be performed, and the medicine can be sprayed sequentially for one row of the cutting of the seedling mat, and when the unit clutch is disconnected to stop the operation of the vertical feed roller drive shaft,
As a result, the operation of the medicine pumping mechanism is also stopped, and there is no possibility that unnecessary medicine spraying is performed except during the planting operation.

Further, when the cutting amount of the seedling from the seedling mat is changed by interlocking and linking the medicine pumping mechanism and the seedling vertical pick-up amount adjusting mechanism, the medicine from the medicine pumping mechanism is correspondingly changed. The amount of pumping can also be changed correspondingly, and it is possible to spray the medicine suitable for the amount and size of the seedling to be planted.

[0017]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a riding rice transplanter A having a medicine spraying device M according to the present invention. The riding rice transplanter A has a planting section 2 at a position rearward of a traveling section 1 via a lifting / lowering connecting mechanism 3. The fertilizer applicator N is mounted behind the traveling section 1. Further, a medicine spraying device M is mounted behind the fertilizer application device N.

As shown in FIG. 1, the traveling section 1 has a prime mover section 5 at the front above the body frame 4 and a driving section 6 at the rear, and a driving section 6 below the body frame 4. In the middle part, left and right front wheels 7, 7 are provided via a front axle case 8, and left and right rear wheels 9, 9 are provided at a rear portion via a rear axle case 10.
A transmission case 11 is disposed between the front axle case 8 and the rear axle case 10.

An engine 12 is mounted on the motor unit 5, and a transmission case 11 is interlocked to the transmission 12 via a transmission case transmission shaft 13.
A rear axle case 10 is connected to the transmission case 11 and a front axle case 8 is connected to the transmission case 11 via a front axle case transmission shaft 14. Reference numeral 15 denotes a hood.

The driving section 6 has a steering column 16 integrally formed at the rear of the bonnet 15, a handle 18 attached to a handle support shaft 17 protruding from the upper end of the column 16, and a driver's seat behind the handle 18. 19 are arranged and constituted.

In FIG. 1, reference numeral 20 denotes a body frame 4.
The vehicle body template 20 stretched upward, the vehicle body template 20 includes a step portion 20a projecting left and right of the bonnet 15, a floor portion 20b formed between the steering column 16 and the driver's seat 19, and a driver's seat support portion 20c. And a rear step portion 20d formed to extend rearward from the support portion 20c, and a rear fender 20e formed on left and right side edges of the step portion 20d.

As shown in FIG. 1, the planting section 2 is connected to the planting transmission case 21 at the front ends of a plurality of planting transmission cases 22 extending in the front-rear direction. Are arranged at regular intervals in the left-right direction, and planting claws 24 are attached to the left and right sides of the rear end of each planting transmission case 22 via rotary cases 23, respectively. A seedling table 25 for five-row planting is placed above the attached transmission case 22, and at a position below each planted transmission case 22,
Each has a float 26 attached.

In FIG. 1, reference numeral 27 denotes a groove generator attached to the lower surface of the middle part of the float 26, and reference numeral 28 denotes a planting input shaft projecting forward from the planting transmission case 21.
28 is a PTO projecting backward from the transmission case 11
The shaft 29 is operatively connected to the shaft 29 via a planting transmission shaft 30.

In this way, the planting section 2 is capable of performing the five-row seedling operation with five planting claws 24 and the five-groove forming operation with five groove generators 27. .

The raising / lowering connecting mechanism 3 is interposed between the rear end of the vehicle body frame 4 of the traveling section 1 and the front end of the planting mission case 21 of the planting section 2 to move the planting section 2 up and down. So that it can be activated.

As shown in FIG. 1, five fertilizer applicators N are provided on the rear end of the body frame 4, and a fertilizer hopper 37 for containing fertilizer and a certain amount of fertilizer in the fertilizer hopper 37 are provided. The fertilizer feeding section 38 that feeds out one by one, and the fertilizer feeding section 38
The fertilizer is provided with a fertilizer feeding section 40 for feeding the fertilizer in the fertilizer hose section 39 to the fertilizer groove side for guiding a certain amount of fertilizer to be further fed to the fertilizer groove provided in the planting section 2.

In FIG. 1, reference numeral 41 denotes a hopper body;
Indicates an open / close lid.

The five-row planting rice transplanter A with the fertilizer N and the chemical spraying device M is constructed as described above, and the feature of the present invention is that The spraying device M is configured to send the medicine from the back surface to the front surface of the seedling mounting table 25 and discharge the medicine to the front surface of the seedling mounting table 25, thereby allowing the medicine to permeate the seedling mat a from the back side. In addition, the ejection of the medicine is to be performed in the vicinity of the seedling extraction outlet 43,
The pump that discharges the medicine and the longitudinal feed roller drive shaft 62 of the seedling mat a are interlockingly connected, and the pump that discharges the medicine and the seedling vertical picking amount adjustment mechanism C are interlockingly connected. .

Hereinafter, the configuration which is a feature of the present invention will be described in detail.

As shown in FIG. 2, a seedling b provided with seedlings b 'having a certain height is placed on a seedling mounting table 25 provided above the planting transmission case 22.
A seedling mat a on which seedlings are planted is placed, and a drug tank 45 having a lid 44 that can be opened and closed is detachably mounted above the seedling mounting table 25. In the figure, 64 is the chemical tank 45
2 shows a tank support for supporting the tank.

An upper end of a chemical pipe 46 communicates with a bottom surface of the chemical tank 45, and a lower end of the chemical pipe 46 is
Is opened through a medicine ejection nozzle 47 on the surface of the medicine pipe 46, and a medicine pumping mechanism B is provided in the middle of the medicine pipe 46.
Is interposed.

That is, in the vicinity of the seedling outlet 43 of the seedling mounting table 25,
That is, a drug pumping mechanism B is mounted on the rear side of the seedling table 25 slightly above the seedling take-out port 43, and as shown in FIG. 46
Has a medicine ejection nozzle 47 at the tip, and the medicine ejection nozzle 47
47 is inserted into the nozzle insertion hole 48 drilled in the seedling mounting table 25 in an obliquely downward orientation, and the tip of the nozzle 47 partially projects from the surface of the seedling mounting table 25, The opening end of the medicine ejection nozzle 47 is just obliquely opposed to the lower surface of the seedling mat a on the seedling mounting table 25.

The nozzle insertion hole 48 formed in the seedling mounting table 25 is formed by projecting the plate-like main body of the seedling mounting table 25 obliquely upward (front side). The medicine ejection nozzle 47 is moved along the raising piece 49 obliquely raised on the surface side to the seedling mounting table 25.
To be installed diagonally from below.

As shown in FIGS. 3 and 4, the chemical pipe 46 is provided by branching from one chemical tank 45 by the number of the seedlings. 25, is extended via a medicine pumping mechanism B disposed in a rib 55, and is connected to a medicine ejection nozzle 47 in the vicinity of a seedling take-out port 43 of a single seedling mounting table 25. 47 connects the base end with the chemical pipe 46, and the horizontal pipe 47-1 and the horizontal pipe 47-1 which are arranged so as to cross the back side of the seedling mounting table 25.
It is composed of a branch nozzle 47-2 that is branched and communicated in a comb-like shape.

In the figure, reference numeral 50 designates the seed ejection table
This is a stay for being inserted and fixed in the nozzle insertion hole 48 of the seedling mounting table 25. The flanges 51 at both ends of the substantially L-shaped stay main body projecting in a mountain shape with respect to the back surface of the seedling mounting table 25 are provided on the back side of the seedling mounting table 25. At the same time as the screw stop 52, the base of the medicine ejection nozzle 47 press-fitted and connected to the distal end of the medicine pipe 46 is fixed to the substantially L-shaped stay body via a fixing nut 53.

Accordingly, the medicine ejection nozzle 47 is inclined obliquely downward from the nozzle insertion hole 48 by the chevron shape of the substantially L-shaped stay body.

Next, the medicine pumping mechanism B provided in the middle of the medicine pipe 46 will be described with reference to FIG.

A thin box-shaped pressure-feeding case 54 is mounted in a concave portion on the back side of a raised rib 55 provided for partitioning the seedling mat mounting portion of each row of the seedling mounting table 25, and from one end of the rear side wall of the case 54. Insert the drug pipe 46 into the pumping case 54 to form a U
The case 54 is pulled out from the other end of the rear side wall of the case 54, and is further U-turned at the drawn-out portion to be connected to the medicine discharge nozzle 47 fixed to the lower part of the seedling mounting table 25.

Inside the U-turn 56 portion of the medicine pipe in the case 54, two left and right rotatable pressure feeding rollers 57 are pressed against each other, and the center of the roller 57 is rotatably connected to the case 54. It is supported at both ends of the rotating body 58 that is supported, and the rotating body 58
The rotation shaft 59 is linked with a belt receiving roller 81 of a seedling feed belt 61 for feeding the seedling mat a in the vertical direction, as described later, and corresponds to a vertical feed operation of one row of the seedling mat a. The medicine pumping mechanism B is configured to interlock with the medicine pumping unit to pump one medicine.

That is, as shown in FIGS. 2 and 3, two rectangular windows 60 are formed in the lower half of the seedling mounting table 25 on which one row of seedling mats a are placed. The window 60 is provided with a seedling vertical feed belt 61 so as to be exposed on the surface of the seedling mounting table 25. The vertical seedling feeding belt 61 is a pair of upper and lower belt receiving rollers disposed on the back side of the seedling mounting table 25. The vertical feed roller drive shaft 62, which is suspended on the 80 and 81 and drives the same roller 81, is interlocked and connected with a horizontal feed drive mechanism that feeds the seedling table 25 sideways. When cutting of one row of seedlings from the seedling mat a is completed by the planting claws 24, the vertical feed roller drive shaft 62 is automatically driven and rotated in conjunction therewith to rotate the seedling vertical feed belt.
By rotating 61, the seedling mat a is vertically fed by an amount corresponding to the next row of seedlings b. A belt receiving roller 81 operatively connected to the vertical feed roller drive shaft 62, and a chemical pressure feeding mechanism B is connected to the rotating shaft 59 in the case 54, so that when the seedling mat a moves downward by one row of the seedlings b, the rotating body 58 rotates in conjunction therewith to rotate the chemical pipe 46.
The inside of the seedling mat 25 is placed on the seedling mat 25a, and the medicine inside the seedling mat 25 is placed on the seedling mat 25a. Will be permeated.

At this time, since the seedling mat a is raised by the projecting piece 49, a certain gap is formed on the lower side of the projecting piece 49, and the medicine is discharged from the medicine discharge nozzle 47 into the gap S. Discharged.

Rotary shaft 59 linked to vertical feed roller drive shaft 62
Since the rotation angle of has a relationship with the amount of medicine to be fed, the amount of medicine ejection is adjusted by adjusting the rotation angle (the amount of rotation) of the rotation shaft 59 by adjusting the amount of interlocking with the longitudinal feed roller drive shaft 62. Can be adjusted.

The chemical pumping mechanism B is linked to the seedling vertical picking amount adjusting mechanism C. When the seedling vertical picking amount is adjusted, the operating amount of the chemical pumping mechanism B can be automatically changed in conjunction with the adjustment. The amount of the seeds b taken vertically and the amount of the medicine to be pumped, that is, the amount of the medicine to be sprayed, are made to be proportional so that the medicine with a uniform distribution corresponding to the planted seedlings can be provided.

That is, the seedling vertical picking amount adjusting mechanism C is shown in FIG.
As shown in the figure, a seedling extraction plate 63 having an L-shaped cross section and disposed at the lower end edge of the seedling mounting table 25, and a slide mechanism D connected to the base of the seedling extraction plate 63 and capable of sliding up and down. The vertical position of the seedling take-out plate 63 can be adjusted from the back side of the seedling mounting table 25 via the interlocking mechanism in conjunction with the slide mechanism D. An operation rod 75 of an operation lever 74 provided on the back side of the table 25, and the operation rod 75
An inner wire 76 connected in the middle, a cam piece 77 for driving a seedling vertical feed belt in which the tip of the inner wire 76 is connected, an operating cam 78 that engages with the cam piece 77, and an operating cam 78 Side feed shaft 79 for interlockingly connected seedling table side feed
And a slide mechanism D of the seedling extraction plate 63 provided at the end of the operation lever 74.

Therefore, when the operating lever 74 is operated to adjust the amount of seedlings, the inner wire 76 is pulled through the operating rod 75, and the cam piece 77 connected to the end of the inner wire 76 is actuated to operate the cam piece 77. Displace the position.

Since the cam piece 77 is rotated by the rotation of the operating cam 78 to be engaged, if the position of the cam piece 77 linked to the vertical feed roller drive shaft 62 of the seedling vertical feed belt 61 is displaced, The amount of power transmitted from the operating cam 78 engaged with the cam piece 77 also changes, and eventually the amount of movement of the seedling vertical feed belt 61 can be adjusted in accordance with the adjustment of the seedling vertical picking amount.

That is, the vertical feed amount of the seedling vertical feed belt 61 can be automatically adjusted. When the vertical position of the seedling extracting plate 63 is adjusted to adjust the vertical seedling amount, In addition, the feeding operation amount of the seedling vertical feed belt 61 is also adjusted, so that the seedling mat a can be reliably adjusted in the vertical feeding amount, and the seedling vertical picking amount from the seedling extracting plate 63 can be surely adjusted.

The adjustment of the transport amount of the seedling vertical feed belt 61 is performed by a vertical feed roller drive shaft 62 for driving the belt 61,
The rotation amount of the rotary shaft 59 can be adjusted by linking the rotary shaft 59 of the medicine pumping mechanism B with the rotary shaft 59.
58, the pressure of the medicine can be adjusted via the pressure roller 57.

Further, it is also possible to directly interlock with the chemical pumping mechanism B from the seedling vertical picking amount adjusting mechanism C, and to constitute a component in the interlocking mechanism of the seedling vertical picking amount adjusting mechanism C, for example, the seedling extracting plate 63. A configuration that changes the medicine pumping operation range of the medicine pumping mechanism B can be added to the slide mechanism D.

That is, when the medicine pumping mechanism B is a pumping mechanism using an electric pump, the operation time of the electric pump can be adjusted by adjusting the vertical sliding position of the seedling extracting plate 63. It is also possible to adjust the pumping discharge amount.

Unit clutches L-1, L-2, L-3 are interposed between the belt feed roller 81 and the vertical feed roller drive shaft 62 for operating the belt receiving roller 81 of the seedling vertical feed belt 61. Power is transmitted from the vertical feed roller drive shaft 62 to the seedling vertical feed belt 61 via the belt receiving roller 81 and cut off by the intermittent operation of the unit clutches L-1, L-2, L-3. It is configured as follows.

Therefore, each unit clutch L-
When the cutting operation of 1, L-2, L-3 is performed, the power is not transmitted to the belt receiving roller 81 of each seedling vertical feed belt 61 of the seedling mounting table 25. B
The rotation of the rotating shaft 59 is also stopped, so that there is no need to separately provide a drug locking mechanism for stopping the operation of the seedling vertical feed belt 61 in the chemical pressure feeding mechanism B, or to perform a locking operation. Work can be simplified.

The unit clutches L-1, L-
2. When cutting the L-3 and stopping the seedling planting operation, the rotation shaft 59 of the medicine pumping mechanism B also stops, so that the ejection of the medicine is automatically stopped and the useless spraying of the medicine can be performed. There is no effect.

FIG. 8 shows another embodiment of the present invention in which the position of the chemical tank 45 is different, and shows a state in which the chemical tank 45 is attached to the upper back side of the seedling mounting table 25. The attachment position of the 45 is determined in consideration of the weight balance of the entire seedling table 25 and the planting section 2 and the like.

FIGS. 6 and 7 show another embodiment of the medicine pumping mechanism B, in which a medicine pipe 46 from a medicine tank 45 is provided.
Is connected to the end of the device, and the mechanism B performs the drug delivery by the drug delivery lever 65 disposed within the trajectory range of the planting claw 24 with the planting operation of the planting claw 24. Like that.

That is, the medicine pumping mechanism B of another embodiment.
The plunger 67 is slidably housed in a cylindrical case 66. The plunger 67 is provided with a check valve 68 at its head which is opened when the plunger 67 moves backward and closed when moving forward. The operating rod 69 is connected to 67, and the operating rod 69
One end is pivotally connected to the planting transmission case 22 of the planting section 2 at one end.
The medicine pumping lever 65 is located inside the claw guide 71 of the planting claw 24 when not in operation. When cutting and holding the seedlings b from the seedling mat a of the table 25 and lowering them for planting in the soil, when they come into contact with the chemical pressure feeding lever 65 located inside the claw guide 71, the lever 65 pivots 70. Around the part and displaces to the plunger 67 side.
The plunger 67 moves backward, the check valve 68 is opened, and the medicine is discharged from the opened check valve 68 at the head of the plunger 67 and engages with the planting claw 24 in contact with the medicine pressure feeding lever 65. The medicine is sprayed on the stopped cutting seedlings, and the cutting seedlings on which the medicine has been sprayed are planted by the planting claws 24 as they are.

That is, since the medicine is sprayed after the cutting of the seedlings b, the medicine does not remain in the seedlings b remaining on the seedling mats a. Can be discarded without worry.

In FIG. 7, reference numeral 72 denotes an extendable bellows portion connected to the cylindrical case 66 in front of the plunger 67,
At the rear end of the bellows portion 72, a distal cylindrical case 73 is continuously provided, and at the open end of the distal cylindrical case 73, a medicine pressure feeding lever 65 is integrally provided. Cylindrical case
It is integrally connected to 73.

With such a structure, the planting claw 24 and the medicine pumping lever 65 come into contact with each other, the plunger 67 moves backward through the distal end cylindrical case 73, the operating rod 69, the bellows portion 72, and the like, and the check valve 68 moves. The valve is opened to discharge the medicine.

Further, a planting claw that abuts against the medicine feeding lever 65.
24 parts are straight cutting claws connected to the planting arm 24-1
24-2 is a slope 24-3 at the tip. In the figure, reference numeral 24-4 denotes a push rod.

[0062]

According to the first aspect of the present invention, the chemical is directly sent from the back side to the seedling mat by sending the chemical from the back of the seedling mounting table to the front surface and discharging the chemical to the seedling mounting surface. As a result, the efficiency of impregnation of the seedling mat with the drug is improved as compared with the case where the drug is sprayed from above the seedlings, and the drug can be absorbed into the seedling mat without interference such as the seedlings. There is an effect, and moreover, there is an effect that the amount of impregnation into the seedling mat can be made uniform and the impregnation time can be applied without dispersing the medicine.

According to the second aspect of the present invention, the ejection of the medicine
Since the treatment is performed in the vicinity of the seedling collecting outlet, the medicine can be impregnated directly from the first row of the cutting of the seedling mat, and the effect of spraying the medicine on all the seedlings on the seedling mat can be obtained.

According to the third aspect of the present invention, the medicine pumping mechanism for ejecting medicine and the longitudinal feed roller drive shaft of the seedling mat are connected in an interlocked manner. The medicine is ejected in a specific manner, eliminating the need for a separate power source for pumping the medicine, simplifying the structure, and longitudinally feeding when the unit clutch is disconnected to stop seedling planting. Since the roller drive shaft is also stopped, the ejection of the medicine is automatically stopped, so that there is an effect that unnecessary medicine is not sprayed.

According to the fourth aspect of the present invention, since the medicine pumping mechanism for ejecting medicine and the seedling picking amount adjusting mechanism are connected in an interlocked manner, the medicine ejection amount can be changed in proportion to the vertical picking amount of seedlings. This makes it possible to impregnate the cutting seedlings with an appropriate amount of the chemical.

[Brief description of the drawings]

FIG. 1 is an overall side view of a medicine spraying device of a rice transplanter according to the present invention.

FIG. 2 is an enlarged side view of a main part of the medicine spraying device of the present invention.

FIG. 3 is a plan view of a main part of the medicine spraying device of the present invention.

FIG. 4 is an explanatory cross-sectional view showing a medicine pumping mechanism.

FIG. 5 is an explanatory diagram showing a mechanism related to a seedling vertical pick-up amount adjusting mechanism and a chemical pumping mechanism.

FIG. 6 is a side view of a main part of another embodiment.

FIG. 7 is an enlarged partial cross-sectional view of the main part.

FIG. 8 is a side view of a main part at a different position of the medicine tank.

[Explanation of symbols]

 A Riding rice transplanter a Seedling mat B Chemical pumping mechanism C Nursery picking amount adjustment mechanism M Chemical spraying device 2 Planting unit 25 Seedling table 43 Seedling outlet 47 Chemical discharge nozzle 57 Pressing roller 61 Seedling vertical feed belt 62 Vertical feed roller Drive shaft 63 Seedling removal plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazunori Ogama 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. (72) Toshio Nakao 1-32 Chayacho, Kita-ku, Osaka, Osaka No.Yanmar Agricultural Machinery Co., Ltd. F term in the stock company (reference) 2B060 AA01 AC03 AD09 BA04 BA09 BB06 BB10 CA19 CB06 2B064 AA05 AA07 AB01 BA26 2B121 CB01 CB20 CB23 CB33 CB42 CB47 CB51 CB61 CB66 EA26 FA11

Claims (4)

[Claims] A seedling mat is prepared by sending a chemical from the back surface to the front surface of a seedling mounting table (25) and discharging it to the surface of the seedling mounting table (25).
(a) A drug spraying device of a rice transplanter, wherein the drug is penetrated from the back side to (a). 2. The medicine spraying apparatus according to claim 1, wherein the ejection of the medicine is performed in the vicinity of the seedling outlet (43). 3. The method according to claim 1, wherein a medicine pumping mechanism (B) for pumping the medicine and a longitudinal feed roller drive shaft (62) of the seedling mat (a) are connected in an interlocked manner. A drug spraying device for a rice transplanter according to the present invention. 4. The method according to claim 1, wherein a medicine pumping mechanism (B) for ejecting medicine and a seedling collecting amount adjusting mechanism (C) are connected in an interlocked manner. 3. The chemical spraying device for a rice transplanter according to claim 1.