JP2002204606A - Seedling planting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve prevention performances of scattering of mud thrown up by a planting mechanism to a chemical application apparatus. SOLUTION: This seedling planting apparatus is equipped with a seedling placing stand 12 which is reciprocated at a set stroke, a planting mechanism 17 which takes out stocks of seedlings placed on the seedling placing stand 12 one by one and plants the seedlings on the surface of a rice field by a vertical circulation operation, a chemical application apparatus 21 which is positioned slantingly upward to the rear of the planting mechanism 17 and applies a chemical to the surface of a rice field planted with seedlings and a series of right and left mudguard covers 45 provided with upper mudguard covers 43 and rear mudguard cover parts 44 for preventing mud thrown up by the planting mechanism 17 to the chemical application apparatus 21 side. The mudguard covers 45 are made wider in the right and left width than the chemical application apparatus 21. The mudguard covers 45 are arranged in a state of both the right and left ends projected more right and left outward than the chemical application apparatus 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device which is connected to the rear part of a self-propelled machine so as to be able to move up and down.
A seedling rest that reciprocates with a set stroke in the left and right direction,
A planting mechanism that takes out the seedlings placed on the seedling pedestal one by one and plants them on the rice field by circulating up and down between the extraction part at the lower end of the seedling pedestal and the rice field in conjunction with the movement of the seedling pedestal. And a drug spraying device which is positioned obliquely rearward and rearward of the planting mechanism and sprays a drug on a rice field on which seedlings are planted.

[0002]

2. Description of the Related Art In a conventional seedling planting apparatus of this kind, a mudguard cover for preventing the mud splashed by a planting mechanism from scattering toward a chemical spraying apparatus is disposed at the front of the chemical spraying apparatus. An upper mudguard cover was provided between each fertilizer and a rear mudguard cover was provided.

[0003]

However, according to the above-mentioned conventional technique, a gap is formed between the fertilizer and the upper mudguard cover, and as a result, mud which has been jumped up by the planting mechanism through the gap. There is a problem that the desired drug spraying performance is reduced by reaching the drug spraying device and attaching to the drug spraying port.

[0004] An object of the present invention is to improve the performance of preventing the mud flied up by the planting mechanism from scattering to the chemical spraying device.

[0005]

The features, functions and effects of the seedling plant according to the present invention according to the first aspect are as follows.

[Characteristics] By circulating up and down between a seedling rest that reciprocates in a set stroke in the left-right direction and a take-out part at the lower end of the seedling rest and a rice field in conjunction with the movement of the seedling rest. A planting mechanism for taking out the seedlings placed on the seedling rest one by one and planting them on the rice field, and a chemical spraying device that is located diagonally above and behind the planting mechanism and sprays the chemicals on the rice field on which the seedlings have been planted. A seedling planting device comprising: a series of right and left mudguards including an upper mudguard cover portion and a rear mudguard cover portion for preventing mud soil flipped up by the planting mechanism from scattering toward the chemical spraying device. A cover is provided, and the mudguard cover is configured to be wider left and right than the medicine spraying device, and the mudguard cover is arranged so that both left and right ends protrude left and right outward from the drug spraying device.

[Operation] Since a series of left and right mudguard covers having an upper mudguard cover and a rear mudguard cover are provided as mudguard covers, the mud splashed by the planting mechanism is scattered toward the chemical spraying device. Excellent prevention performance can be achieved.

In addition, the mudguard cover is configured to be wider in the left and right direction than the medicine spraying device, and the left and right ends of the mudguard cover are arranged so as to protrude left and right outward from the drug spraying device. As compared with the case where the right and left and the medicine spraying device are formed to have the same width on the left and right, the performance of preventing the mudguard cover from scattering toward the medicine spraying device can be improved. Of course, the rear mudguard cover portion of the mudguard cover also functions as a cover for preventing the spraying chemical from scattering on the leveling float or the like of the seedling planting device.

[Effect] Therefore, the performance of preventing the mud flied up by the planting mechanism from scattering toward the chemical spraying device can be improved.

The features, operations and effects of the seedling plant according to the second aspect of the present invention are as follows.

[Characteristics] By circulating vertically up and down between a seedling rest that reciprocates with a set stroke in the left-right direction and a take-out part at the lower end of the seedling rest and a rice field in conjunction with the movement of the seedling rest. A planting mechanism for taking out the seedlings placed on the seedling rest one by one and planting them on the rice field, and a chemical spraying device that is located diagonally above and behind the planting mechanism and sprays the chemicals on the rice field on which the seedlings have been planted. A seedling planting device comprising: a series of right and left mudguards including an upper mudguard cover portion and a rear mudguard cover portion for preventing mud soil flipped up by the planting mechanism from scattering toward the chemical spraying device. A cover is provided, and the rear mudguard cover is made of a flexible sheet material.

[Operation] Since a series of right and left mudguard covers having an upper mudguard cover and a rear mudguard cover is provided as a mudguard cover, the mud splashed up by the planting mechanism is scattered toward the chemical spraying device. Excellent prevention performance can be achieved.

Moreover, since the rear mudguard cover is made of a flexible sheet material, when the rear mudguard cover is removed and placed on the ground for maintenance or the like of the planting mechanism, the rear mudguard may be mistakenly placed. When the mudguard cover is stepped on, the rear mudguard cover bends to avoid damage.

[Effect] Therefore, it is possible to improve the performance of preventing the mud flied up by the planting mechanism from being scattered toward the chemical spraying device.
In addition, it is possible to suppress deformation and breakage of the rear mudguard cover when the rear mudguard cover is removed when performing maintenance or the like on the planting mechanism.

The features, operations and effects of the seedling plant according to the third aspect of the present invention are as follows.

[Features] In the seedling planting apparatus according to the present invention according to claim 1 or 2, the rear mudguard cover is provided with:
The point is that it is disposed in an inclined posture in which the lower end is positioned forward from the upper end.

[Effect] The medicine is sprayed from the medicine spraying device in such a manner that the medicine spreads forward and backward toward the lower side. Paying attention to the above point, the rear mudguard cover is arranged in an inclined position in which the lower end is located forward from the upper end, so that the adhesion and deposition of the sprayed chemical on the rear mudguard cover is suppressed, And the disadvantage that the bulk accumulated chemicals are peeled off and a portion with a high chemical concentration is locally generated on the rice field surface can be suppressed.

[Effect] Accordingly, the medicine can be satisfactorily sprayed with little loss while providing the rear mudguard cover.

The features, operations and effects of the seedling plant according to the present invention according to claim 4 are as follows.

[Features] In the seedling planting apparatus according to the second aspect of the present invention, a left and right long hard member having shape retaining properties is attached to a lower edge of the rear mudguard cover. is there.

[Operation] Since the left and right long hard members having shape-retaining properties are attached to the lower edge of the rear mudguard cover,
Even though the rear mudguard cover is made of sheet material, the rigidity and weight of the hard member prevent the rear mudguard cover from being swung by wind, etc., and mudguard the lower edge of the rear mudguard cover. It can be stably held in position.

[Effects] Accordingly, the desired mudguard function of the rear mudguard cover can be satisfactorily exhibited while the rear mudguard cover is made of a sheet material.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a rice transplanter includes an eight-row seedling planting device 2 at a rear portion of a riding type self-propelled machine 1 via a four-link mechanism 3. A lift cylinder 4 using a hydraulic cylinder that raises and lowers the seedling planting device 2 with pressure oil supply and lowers the seedling planting device 2 by its own weight with oil drainage. 5 is provided.

The self-propelled machine 1 has an engine 6 mounted on a front part, a driver seat 7 mounted on a rear part, and a pair of left and right driving front wheels 8 and a pair of right and left driving rear wheels 9. In front of the driver's seat 7, a steering handle 10 for steering the drive front wheel 8 is arranged.

As shown in FIGS. 3 and 4, the seedling planting apparatus 2 comprises a planting frame 11 supported at the rear of the quadruple link mechanism 3 so as to be freely rollable around a longitudinal axis.
An eight-row specification seedling stand 1 that reciprocates with a set stroke in the left-right direction and has eight seedling mounting parts juxtaposed in the left-right direction.
2, a plurality of left and right leveling floats 13 for leveling the field to be planted by sliding on the field as the vehicle travels, and four planting cases 14 arranged side by side at a set interval on the left and right, Eight seedling outlets 16 are formed at predetermined intervals on a slide rail 15 that slidably supports the lower end of the seedling 12, and the seedling rests are positioned on both left and right sides of each planting case 14. 12 in conjunction with the movement of the seedling outlet 16
By circulating up and down between the soil and the paddy field surface, eight rotary planting mechanisms 17 are provided which take out the seedlings placed on each seedling mounting portion one by one and plant the seedlings on the paddy field surface. ing.

As shown in FIGS. 5 and 6, the seedling rest 12 has a main part 12M having six seedling rests and a left end 2M.
End 12E having two seedling rests,
E is an action position where the main part 12M is connected to the left end of the main part 12M to form an eight-row specification seedling rest 12 and the right and left width of the seedling rest 12 overlapping the left end of the main part 12M. The position can be freely changed to the storage position to be reduced. In other words, the seedling rest 12 is configured to be freely switchable to the storage posture in which the left-right width is reduced.

As shown in FIGS. 7 and 8, the planting case 14 includes a transmission mechanism for collectively driving the planting mechanisms 17 located on both sides.

The transmission mechanism includes a left ridge-side clutch LL for intermittently transmitting power to the planting mechanism 17 for the left outer two rows.
And a right ridge clutch RR for interrupting transmission of the right outer two rows to the planting mechanism 17 and a center left ridge clutch CL for interrupting transmission of the left two rows from the left and right center to the planting mechanism 17.
And a center right ridge-side clutch CR for intermittently transmitting power to the planting mechanism 17 for the right two rows from the left and right center.

The planting mechanism 17 mounts a rotating case 18 that is driven and rotated on the planting case 14, and rotatably mounts a planting claw support case 19 on each of both ends of the rotating case 18. This is a well-known structure that is provided with a connecting member 20 that connects the claw support cases 19 to each other and regulates the posture of the planted claw support case 19 with respect to the rotating case 18 as the rotating case 18 rotates.

The seedling planting device 2 includes a medicine spraying device 21 for spraying a powdery or granular medicine such as a herbicide on a rice field after planting seedlings, and a cover device.

The medicine spraying device 21 includes the planting mechanism 1
7 and a medicine hopper 23, as shown in FIGS.
A pair of left and right feeding devices 24 for metering and feeding the medicine from
L, 24R, a pair of left and right sprayers 25L, 25R for spraying the medicine from the feeding devices 24L, 24R, and a diffuser 26 having a lower end face as a series of left and right spray ports for diffusing and guiding the sprayed medicine to the left and right. It is composed of

A feeding device 24 from the medicine hopper 23
FIG. 14 shows the medicine injection cylinders 27 for L and 24R respectively.
(A) and (b), as shown in FIG.
A manual shutter 28 for opening and closing the medicine path from the third to the feeding devices 24L and 24R is mounted, and the manual shutter 28 closes and opens the medicine path by moving back and forth in a direction perpendicular to the medicine path. It is. The operating means is provided with an operation piece 29 for changing the sliding position of the manual shutter 28 between the closed position and the open position by swinging around the horizontal axis p1, and moving the closed position and the open position around the horizontal axis p1. After swinging the set angle from the closed position, the first contact portion 31a is brought into contact with the operation piece 29, and the operation piece 29 is pushed and rocked to the open position by the subsequent swing to the open position. After swinging the set angle from the open position, the second contact portion 31b is brought into contact with the operating piece 29, and the operating handle 31 is pressed to swing the operating piece 29 to the closing position by swinging to the closing position. A stopper (not shown) for preventing the operation handle 31 from swinging beyond the closed position and the open position by acting on the operation handle 31 is provided. When the dollar 31 is located closer to the closed position than the set position, the operating handle 31 is oscillated to the closed position, and when the dollar 31 is located closer to the open position than the set position, the operating handle 31 is urged to swing to the open position. It is configured by providing a winding spring 32. In other words, the operation handle 31 is held at the closed position and the open position in a state where the operation is allowed by being pressed against the stopper by the urging force of the winding spring 32.

The feeding devices 24L and 24R are arranged as shown in FIG.
As shown in FIGS. 0, 11, and 16, a perforated plate 33 that rotates intermittently in one direction around a vertical axis is provided.
The medicine hopper 2 is circulated at the medicine receiving position by circulating between the medicine receiving position below the medicine introducing cylinder 27 and the medicine dropping position in the diffuser 26 with the rotation of the perforated plate 33.
A receiving hole 35 is formed to receive the medicine from 3 and drop the medicine received at the medicine dropping position into the diffuser 26. When the receiving hole 35 is located at a position other than the medicine dropping position, the lower end opening of the receiving hole 35 is closed. And a closing plate 36 which is opened when it is located in the medicine dropping portion 34.
The medicine in the medicine hopper 23 is metered and fed by one-way intermittent rotation, and the feeding amount is adjusted by changing the number of rotations.

The means for driving the left one of the feeding devices 24L and 24R is, as shown in FIGS. 4, 8 and 9, an example of the lower-side transmission system of the left ridge side clutch LL. A power take-out rod 38 is provided which is linked to the eccentric position of the connecting member 20 of the planting mechanism 17 and reciprocates as the planting mechanism 17 rotates. The first relay link 39a is provided with a second relay link 39e interlocked with the first relay link 39a via a shaft 39d.
A swing arm 39c which swings in conjunction with the swing of the relay link 39e via the link 39b is provided.
A conversion transmission mechanism 4 that converts the swing of 9c into intermittent one-way rotation through a gear group and a one-way clutch and transmits the intermittent rotation to the perforated plate 33.
0 is provided. That is, the higher the seedling planting speed, the faster the intermittent rotation of the eye plate 33 to increase the amount of drug delivery. The means for driving the left feeding device 24R is connected to an eccentric position of the connecting member 20 of the planting mechanism 17 which is an example of a lower transmission system of the right ridge-side clutch RR to rotate the planting mechanism 17. A power take-out rod 38 that reciprocates is provided, and a first relay link 39a that repeatedly rotates (oscillates) in conjunction with the reciprocating movement of the power take-off rod 38 is provided.
Is provided with a second relay link 39e interlocked via a shaft 39d, and a swing arm 39c which is swung in conjunction with a swing of the second relay link 39e via a link 39b is provided. A conversion transmission mechanism 40 that converts the swing into intermittent one-way rotation via a gear group and a one-way clutch and transmits the intermittent rotation to the perforated plate 33 is provided. That is, the higher the seedling planting speed, the faster the intermittent rotation of the eye plate 33 to increase the amount of drug delivery.

Each of the sprayers 25L, 25R
As shown in detail in FIG. 11, dispersing blades 41 rotating around the longitudinal axis p2 and dispersing the dropped medicine from the medicine dropping position to the left and right are arranged below the medicine dropping position, and these dispersion blades 41 are driven. An electric motor 42 to be rotated is arranged outside the diffuser 26, and the spreader 25 on the left side is configured.
L is configured to cooperate with the diffuser 26 so as to spray the medicine on the rice field having a width of 6 stripes from the left end, and the sprayer 25 on the right side.
R is configured to cooperate with the diffuser 26 to spray the medicine on the rice field having a width of six lines from the right end.

The medicine spraying device 21 is arranged between the seedling planting mechanisms 17 located at the left and right ends, and is sized to fit within the left and right widths of the seedling rest 12 in the storage position.

The cover device prevents the mud thrown up by the planting mechanism 17 from scattering to the medicine spraying device 21 side, and the sprayed chemical is hung on the leveling float 13 of the seedling planting device 2 and the like. A series of left and right mudguard covers 4 provided with an upper mudguard cover 43 positioned substantially horizontally and a rear mudguard cover 44 positioned in a vertical position.
5 is provided.

The mudguard cover 45 is configured to be wider left and right than the medicine spraying device 21, and is disposed so that both left and right ends protrude left and right outward from the medicine spraying device 21.

The upper mudguard cover 43 is a sheet metal product or the like made of a rigid material such as an iron plate, and the rear mudguard cover 44 is made of a flexible sheet material. A long hard member 46 having shape-retaining property is attached to the lower edge of the rear mudguard cover 44 so as to stabilize the position of the lower end of the rear mudguard cover 44 with weight and rigidity.

The cover device is provided with the planting case 1.
4 is mounted and supported together with the medicine spraying device 21 on a left-right frame 48 using a square pipe supported by a pair of left and right L-shaped stays 47.

The rear mudguard cover 44 is placed in an inclined position such that the lower end is placed on the stay 47 so that the lower end is located forward of the upper end. A hook 47 a is fixed to the stay 47 so as to prevent the lower end of the rear mudguard cover 44 from lifting up with respect to the stay 47 by engaging with the hard member 46.

The fertilizer applicator 5 is mounted on the seedling planting apparatus 2 with a ditcher 49 for forming a sowing groove on a rice field as it travels and for feeding the fertilizer sent into the ditch. 1. Fertilizer hopper 50 and feeder 5 for feeding fertilizer from it
The fertilizer fed out in step 1 is fed into the groove generator 49 with a tube 54.
Motor 52 for generating wind for pressure feeding through
A drive blower 53 is provided.

[Brief description of the drawings]

Fig. 1 Side view of rice transplanter

FIG. 2 is a plan view of the seedling planting apparatus.

FIG. 3 is a side view of the seedling planting apparatus.

FIG. 4 is a side view of a main part of the seedling planting device.

FIG. 5 is a plan view of the seedling planting apparatus in a state where the seedling nest is switched to a storage position.

FIG. 6 is a side view of the seedling-planting apparatus in a state where the seedling rest is switched to a storage position;

FIG. 7 is a plan view of a seedling planting mechanism.

FIG. 8: Transmission system diagram

FIG. 9 is a side view of the medicine spraying device.

FIG. 10 is a longitudinal rear view of a main part of the medicine spraying device.

FIG. 11 is a longitudinal sectional side view of the medicine spraying device.

FIG. 12 is a rear view showing an arrangement relationship between the medicine spraying device and the planting mechanism.

FIG. 13 is a cutaway rear view of a main part of the medicine spraying device.

FIG. 14 is a cutaway rear view showing the opening and closing operation of the shutter.

FIG. 15 is a plan view showing operation means of a shutter.

FIG. 16 is a cross-sectional plan view of the feeding device.

[Explanation of symbols]

 12 Nursery stand 17 Planting mechanism 21 Chemical spraying device 43 Upper mudguard cover 44 Rear mudguard cover 45 Mudguard cover 46 Hard member

Claims (4)

[Claims] A seedling ladder reciprocatingly moves in a set stroke in the left and right direction, and circulating up and down between a take-out part at a lower end of the seedling nest and a rice field in conjunction with the movement of the seedling nest. It comprises a planting mechanism for taking out the seedlings placed on the mounting table one by one and planting them on the rice field, and a drug spraying device which is located diagonally above and behind the planting mechanism and sprays the drug on the rice field on which the seedlings are planted. A series of left and right mudguard covers, comprising an upper mudguard cover portion and a rear mudguard cover portion for preventing mud soil jumped up by the planting mechanism from scattering toward the chemical spraying device. A seedling planting device, wherein the mudguard cover is configured to be wider left and right than the medicine spraying device, and the mudguard cover is arranged such that both left and right ends project left and right outward from the drug spraying device. 2. A seedling rest which reciprocates in a set stroke in the left and right direction, and a seedling which is circulated up and down between a take-out part at a lower end of the seedling rest and a rice field in conjunction with the movement of the seedling rest. It comprises a planting mechanism for taking out seedlings placed on the mounting table one by one and planting them on the rice field, and a chemical spraying device which is located diagonally above and behind the planting mechanism and sprays the chemicals on the rice field on which the seedlings are planted. A series of left and right mudguard covers, comprising an upper mudguard cover portion and a rear mudguard cover portion for preventing mud soil flipped up by the planting mechanism from scattering to the chemical spraying device side. A seedling planting device, wherein the rear mudguard cover is made of a flexible sheet material. 3. The seedling planting apparatus according to claim 1, wherein the rear mudguard cover is disposed in an inclined posture in which a lower end is positioned forward from an upper end. 4. A lower end edge of the rear mudguard cover,
3. The seedling planting apparatus according to claim 2, wherein left and right long hard members having shape retaining properties are mounted.