JP2886078B2 - Rice transplanter with chemical sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter equipped with a chemical spraying device in which a chemical spraying device for spraying a herbicide or the like is connected to the rear of a seedling planting device.

[0002]

2. Description of the Related Art As a medicine spraying device mounted on a rice transplanter, for example, as shown in Japanese Patent Application Laid-Open No. 4-281733, a hopper for storing a powdery medicine and a predetermined amount of medicine are fed from the hopper. A feeding mechanism, a structure equipped with a spray guide that guides and drops the fed drug on the rice field surface after planting is known, and a spray guide is widely arranged horizontally to spray the drug over the planting width. A spraying guide is arranged at a relatively low position at the rear of the seedling planting apparatus so that the chemicals can be sprayed without falling to the planting mechanism and adhering and accumulating to be wasted.

[0003]

For this reason, when a chemical spraying device, especially a spraying guide adjusts a planting mechanism in a seedling planting device, it tends to be a hindrance during maintenance such as. In this case, it is naturally presumed that by removing the medicine spraying device, the adjustment of the planting mechanism can be easily performed from the rear of the greatly opened machine. However, if the medicine spraying device is simply detached and placed on the ground, the lowermost end of the medicine spraying device becomes the lower end of the spraying guide. It is anticipated that accidents will occur, such as contamination and fouling. The present invention has been made in view of such a situation, and makes effective use of the existing structure and, by making a simple improvement, removes the spraying guide without damaging and deforming or soiling it. An object of the present invention is to make it possible to stably support the medicine spraying device on the ground.

[0004]

SUMMARY OF THE INVENTION The present invention is characterized by a hopper for storing a powdered drug, a feeding mechanism for feeding a predetermined amount of drug from the hopper, and a guide for dropping the fed drug onto a rice field after planting. In a rice transplanter with a drug spraying device, in which a drug spraying device equipped with a spraying guide is connected to a rear portion of a seedling planting device, a support frame extends downward from left and right portions of the drug spraying device to below the spraying guide. Along with fixing, the left and right fixing portion of the seedling planting device is provided with a support member that detachably connects the support frame, and at a middle portion in the left and right direction of the medicine spraying device,
The present invention is characterized in that a supporting leg is provided which can be switched between an operating position protruding downward and a retracted position retracted upward.

[0005]

According to the above construction, the drug spraying device can be detached from the seedling planting device by releasing the connection between the support member of the seedling planting device and the support frame of the drug spraying device.
The medicine spraying device can be stably supported on the ground in a three-point ground state of the left and right support frames and the support legs switched to the operation posture.

[0006]

According to the present invention, the following effects can be expected. The left and right support frames for attaching the drug spraying device to the seedling planting device can also be used as the stand.Since it is a simple modification that only a single support leg is installed in the middle of the left and right direction, the stand structure of the removed drug spraying device is configured It can be implemented at a lower cost compared to separately mounting a dedicated stand. Since the support frame is originally configured to have sufficient strength to support the weight of the medicine spraying device, the support legs only need to have enough strength to prevent the medicine spraying device from overturning,
The support legs can be made of inexpensive members such as rods.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Next, the whole rice transplanter with the medicine spraying device according to the present invention is shown, and the rear part is shown in FIG. In this rice transplanter, a six-row seedling planting device 3 is connected to the rear part of the riding type traveling machine body A via a link mechanism 2 so as to be able to move up and down freely. At the same time, a fertilizer application device 4 for performing side-strip fertilization is mounted, and further, a chemical spraying device 1 is mounted behind the fertilizer device 4.

The seedling planting device 3 comprises three planting cases 6 connected to the rear portion of the main frame 5 in the shape of a square pipe at an appropriate distance from each other in a rearward cantilever manner. Each planting mechanism 7 is provided via a chain transmission mechanism (not shown) in each planting case 6 via a feed case 8 to which power is supplied from the body side, while a rotary planting mechanism 7 is provided on both sides. , And the power to each chain transmission mechanism can be intermittently operated by each clutch (not shown). Therefore, by operating each of the line clutches, a partial line planting operation for stopping the operation of the two lines on the left and right sides can be performed.

The fertilizer applicator 4 has a working position located below the support frame 9 erected from the planting case 6 which is a fixed portion on the seedling planting apparatus 3 side, and a maintenance position retracted upward. The slide position can be adjusted over the whole area, so that when removing the seedlings remaining on the seedling rest 10 after the completion of the planting operation, the raising operation is carried out to the maintenance position so that the seedling extracting operation can be easily performed.

A support frame 11 formed by bending a round pipe is fixedly provided on the left and right sides of the medicine spraying apparatus 1. The support frame 11 is attached to the planting cases 6 on both left and right sides.
It is configured so as to be detachably connected to and supported by. That is,
As shown in FIG. 11, a shaft-shaped support member 13 protrudes rearward and upward from a rear portion of each planting case 6 via a bracket 12, and an end of the support frame 11 is attached to each support member 13. The medicine spraying device 1 can be easily removed by inserting and fixing the set bolt 11a to prevent the medicine spraying device 1 from being removed.

A support leg 60 made of a rod material is provided below the middle part of the medicine spraying device 1 in the left-right direction, and can be swingably switched between an operation posture protruding downward and a storage posture retracted forward and upward. As shown in FIGS. 12 and 13, by holding the storage position during the planting operation and maintaining the storage position in the storage position, and at the time of maintenance after removing the medicine spraying device 1, the support leg 60 is switched to the operation position and fixed. The medicine spraying device 1 can be stably supported on the ground in a three-point ground state between the left and right support frames 11 and the center support leg 60. At this time, the support frame 11 and the support legs 60 in the working posture protrude below any member in the medicine spraying apparatus 1, and float and support without causing contamination or damage due to contact with the ground. Also, the support frame 11
Is grounded diagonally, so that no dirt enters the insertion hole for the support member 13,
There is no hindrance when inserting and connecting 1 to the support member 13.

In the seedling planting device 3, three mudguard covers 61 are provided every two lines above the planting mechanism 7 to prevent the muddy water splashed up by the rotation of the planting mechanism 7 from scattering. And the planting mechanism 7
A pair of left and right mud receiving covers 62 that receive muddy water that is flipped rearward by the rotation of are mounted via the support frame 11 and the like. An extended mud receiving cover 62a, which prevents muddy water leaking from between the mudguard covers 61 from falling on a later-described drug delivery link mechanism 39, is provided at a position near the center of each mud receiving cover 62. It is provided to protrude.

Hereinafter, the structure of the medicine spraying device 1 will be described in detail. As shown in FIGS. 4 to 6, the medicine spraying device 1 includes a hopper 14 for storing a powdery medicine such as a herbicide.
At the center in the left-right direction and the hopper 14
A pair of left and right feeding mechanisms 15 for feeding the medicine downward by a predetermined amount in a state of communicating with the lower side of the robot are provided, and the medicines dropped and supplied by the respective feeding mechanisms 15 are diffused in the machine body width direction and dropped on the field. A pair of left and right diffusion rotors 16 are provided in a state where they are juxtaposed in the lateral direction of the fuselage, and this diffusion rotor 16 is provided inside a dispersion guide 17 having a slit-like opening on the lower side and a long box shape in the width direction. It is configured to be deployed and to spread the drug throughout the six planting widths. The hopper 14 can be attached to and detached from the feeding case 18 by a buckle mechanism 19.

The feeding case 18 is formed in a rectangular tube shape surrounding the feeding mechanism 15, and a perforated case 20 is attached so as to cover an upper opening thereof. The hopper 1
Reference numeral 4 denotes a funnel portion 14a for guiding the flow of the drug and an outer peripheral vertical wall portion 14.
b is integrally molded of a synthetic resin material, and even if it is slightly distorted during the attachment / detachment work, a positioning guide for guiding the outer peripheral vertical wall portion 14b and the feeding case 18 to be accurately positioned at the time of mounting. 21 is the eyeglass storage case 20
And the feeding case 18.

As shown in FIG. 12, the support leg 6 is attached to a bracket 63 provided at a lower portion of the feeding case 18.
0 is attached with a wing bolt 64, and is maintained in a posture of use as a stand by being brought into contact with a rear wall 63a which is bent and attached to a bracket 63, and is tightened with a wing bolt 64 to a storage position in a front upper direction. It can be held.

As shown in FIG. 8, the delivery mechanism 15 has a medicine delivery hole 2 which is an insertion hole at a predetermined pitch in the circumferential direction.
2 is provided in a perforated tray storage case 20 so as to be rotatable about a vertical axis, and is supplied from a feed port 24 of the hopper 14 so that the perforated hole 22 of the perforated plate 23 is provided.
The medicine stored in the container falls downward from the funnel-shaped guide portion 25a formed on the bottom plate 25 of the perforated tray storage case 20 through the drop supply port 27 at a position different in the circumferential direction with respect to the feeding port 24. Further, the powdery and granular medicine is scattered in the width direction by the diffusion rotor 16 which is rotated at a high speed by the electric motor 28, and is dropped and supplied to the field in a diffusion distribution state.

The feed holes 22 are alternately formed in two rows on a circumference having a different radius around the same axis, and have a diameter smaller than the hole diameter in the conventional structure. The feed port 24 of the hopper 14 is formed in a large rectangular shape capable of supplying the granular material over the feed holes inside and outside. With this configuration, while maintaining the strength by setting the thickness of the perforated plate to a predetermined thickness, for example, when a small amount of about 1 kilogram of medicine is sprayed per 10 areal field area, Even when the rotation speed of the perforated plate is changed to a low speed state by changing the gear ratio in the transmission system, the powder and granules can be fed out little by little and almost continuously. A seal member made of an elastic material such as rubber is provided on the outer peripheral portion of the feed port of the hopper to prevent the powder from leaking outward by eliminating a gap.

As shown in FIG. 9, only the outer peripheral portion of the perforated plate 23 where the feeding hole 22 is formed is the perforated plate storage case 2.
0, so that the medicine is in sliding contact with the bottom surface 25 of the feeding hole 2.
2 is configured to be effectively transported in a state of being accumulated in the center portion 2, and a concave portion 29 is formed on the center side so that a gap is formed between the central portion and the bottom surface 25.
Is formed so that the feeding hole forming portion always slides on the bottom surface 25 so that the feeding hole forming portion does not rise from the bottom surface due to distortion or the like. In addition, a lid plate 30 covering almost the entire upper surface of the eye plate 23 is provided above the eye plate 23,
It is placed in a state in which entrainment is prevented, and it is effective that the wind generated due to the high-speed rotation of the diffusion rotor 16 blows up through the drop supply port 27 and the powder is blown upward. To prevent it.

The perforated plate 23 in each feeding mechanism 15
Is configured to be driven by the rotational power of the planting mechanism 7 in the seedling planting apparatus 3. In other words, the planting claw support cases 32, which are attached to both ends of the rotating case 31 in the planting mechanism 7 on the lateral outer side so as to be relatively rotatable, are eccentric from the rotation axis of the connecting member 33 that connects the planting claw supporting cases 32. A push / pull rod 34 is pivotally connected to the position, and the other end of the push / pull rod 34 is connected to the lateral rotation shaft 3 via a swing arm 35.
6 is linked. Further, the lateral rotation shaft 36 and the input shaft 38 projecting laterally from the transmission case 37 are linked and connected via a link mechanism 39, and the input shaft 38 reciprocates within a predetermined range as the planting mechanism 7 rotates. It is configured to rotate. When removing the medicine spraying device 1, the transmission system can be separated by releasing the pin connection between the push-pull rod 34 and the swing arm 35.

As shown in FIG. 10, the transmission case 37
, The reciprocating rotation of the input shaft 38 is transmitted to the reverse rotation shaft 43 via the pair of gears 41 and 42, and further,
One-way rotating clutches 44, 4 from both shafts 38, 43, respectively
5 and one output shaft 4 via gear mechanisms 46 and 47.
A transmission system is configured to be transmitted as continuous rotational power to the output shaft 8, and further transmitted from the output shaft 48 to the perforated plate drive shaft 50 via the bevel gear mechanism 49. Accordingly, when any one of the left and right lateral outer clutches is disengaged, the rotation of the corresponding plate 23 is stopped.

On the outer peripheral portion of the perforated plate 23, there is formed a feeding action surface for rotating the powder and granules leaking between the outer peripheral surface of the perforated plate 23 and the peripheral wall 51 of the perforated plate storage case 20. is there. That is, a plurality of notches 52 are formed at predetermined intervals on the outer peripheral surface of the perforated plate 23, and the inner surface on the lower side in the rotation direction of the notched concave 52 is formed into a vertical wall shape substantially along the radial direction. The funnel-shaped guide portion 25 is supported while pushing and rotating the granular material that has leaked between the outer peripheral surface 23a and the peripheral wall 51.
This is configured on a feed action surface 53 that guides to a. In this way, it is possible to prevent the medicine leaking from the feeding hole 22 from accumulating in the eyeglass storage case 20 and clogging at an early stage.

Each of the diffusion rotors 16 includes an electric motor 28
As shown in FIG. 5, a pair of front and rear rotating disks 54 and 55 are connected to each other by four diffusing blades 56 as shown in FIG. It is configured. Each of the supply ports 27 for separately dropping and supplying the granular material to each of the diffusion rotors 16 is located at a position deviated inward in the machine width direction from the rotation axis of each of the diffusion rotors 16 and the blades. It is provided at a position corresponding to the upward rotation point of the body 56. The direction of rotation of each diffusion rotor 16 is set so that the powders supplied in a falling manner are splashed upward and outward. In other words, each diffusion rotor 16 is rotated in the opposite direction so that the adjacent side rotates upward, and each blade body 56 is formed in a diagonal posture positioned radially inward toward the lower side in the rotation direction, and the powder is rotated at the upward rotation point. The particles are scattered upward and outward, so that the diffusion action in the width direction can be rationally performed.

Guide member 1 in which diffusion rotor 16 is stored
Reference numeral 7 denotes a substantially box-like shape which is elongated in the lateral direction of the fuselage and has a lower side opened, and a ceiling surface 58 located above the diffusion rotor 16 is lower as it goes from the upper side of the diffusion rotor 16 to the laterally outward side. The dust particles scattered by the diffusion rotor 16 are effectively irregularly reflected on the ceiling surface 58 and are effectively scattered and supplied in the lateral width direction. Further, a partition member 59 for preventing the powdery material scattered by each diffusion rotor 16 from being scattered toward the scattered area by the diffusion rotor on the opposite side is provided at a central portion in the horizontal direction between the diffusion rotors 16. It is provided. In this manner, the medicine scattered and supplied by each diffusion rotor 16 is surely separated into two regions divided in the machine body width direction, so that the medicine is supplied with high accuracy and uniform distribution.

In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter with a chemical spraying device.

FIG. 2 is a side view of the rear part of the rice transplanter.

FIG. 3 is a plan view of the rear part of the rice transplanter.

FIG. 4 is a partially cutaway rear view of the medicine spraying device.

FIG. 5 is a longitudinal side view of the medicine spraying device.

FIG. 6 is a longitudinal sectional front view of the medicine spraying device.

FIG. 7 is a plan view of an eyeglass storage case.

FIG. 8 is a plan view of the eye plate disposition portion.

FIG. 9 is a sectional view of a feeding mechanism.

FIG. 10 shows a transmission mechanism.

FIG. 11 is a side view showing a frame connection structure.

FIG. 12 is a side view of a state where the detached medicine spraying device is supported on the ground.

FIG. 13 is a front view of a state where the detached medicine spraying device is supported on the ground.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drug spraying device 3 seedling planting device 11 support frame 13 support member 14 hopper 15 feeding mechanism 17 spraying guide 60 support leg

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A01C 11/00 A01M 9/00

Claims (1)

(57) [Claims] 1. A hopper (1) for storing a powdery or granular drug.
4) a drug dispensing device (1) equipped with a dispensing mechanism (15) for dispensing a predetermined amount of drug from the hopper (14) and a dispersing guide (17) for guiding and dropping the dispensed drug onto a rice field after planting; In a rice transplanter with a drug spraying device connected to a rear portion of a seedling planting device (3), supporting frames (11) and (11) are moved downward from right and left portions of the drug spraying device (1) by the spraying guide (1).
7) It extends downward and is fixed below, and the support frame (1) is fixed to the right and left fixing portions of the seedling planting device (3).
A support member (1) for detachably connecting (1) and (11).
3) and (13), and a support leg (60) that can be switched between a downwardly protruding action posture and an upwardly retracted storage posture is provided at an intermediate portion in the left-right direction of the medicine spraying device (1). A rice transplanter with a chemical spraying device, characterized in that the rice transplanter is provided.