JP2008289366A - High speed dibbling mechanism for direct sowing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high speed dibbling mechanism for direct sowing, which can ensure a dibbling long side length in a constant range even in a high speed work condition, and can make a highly accurate dibbling form. <P>SOLUTION: Seeds are continuously dropped and supplied from the seed supply port 9 of an upper chute into a roll cover 3, and the seeds supplied into a seed-carrying groove 7 with a rotated dibbling roll 2 are carried to a seed-excluding port 10 along the roll cover 3, and are then dropped from the seed-discharge port 10 to a field in an agglomerative shape. Since a blowing pinhole 8 is arranged behind the seed-carrying groove 7 in the rotation direction of the dibbling roll 2, the blasting is started just after all the seeds are released from the seed-carrying groove 7, when the opening 11 of a blasting pipe 4 coincides with the blowing pinhole 8. Thereby, the blasted air from the blowing pinhole 8 hits to unreleased agglomerative seeds to enhance a seed-dropping speed. Thus, a dibbling long side length can be ensured in a constant range even in a high speed work condition. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a high-speed point sowing mechanism for direct sowing of a direct sowing seeder that can be suitably used for direct sowing cultivation in rice cultivation.

Conventionally, a direct sowing type seeder that can be suitably used for direct sowing cultivation in rice cultivation is known (see Patent Documents 1 and 2).
In this known technique, a spot sowing unit provided with a rotating beater is arranged below a feeding roll for cutting out seeds from a hopper, and seeds quantitatively supplied from the feeding roll are launched into a field by a rotating beater and spotted. Since a plurality of seeds from the feeding roll can be supplied to the rotating beater side as a group of lumps, the seeds can be packed in one valley part of the rotating beater as compared with the case where the seeds are sent down and fed, As a result, seeds that are driven into the soil of the field can also be sown as a plurality of lumps.
Moreover, the seeding machine for direct seeding which has the spot seeding mechanism for precise seeding developed by the present applicant and can be easily incorporated into an existing seeding machine is known (see Patent Document 3). .
In this known technique, in the spotting chute, a vertical cylindrical portion that guides seeds that have fallen from the feeding chute, and a cylindrical external valve are formed integrally with the vertical cylindrical portion in an axial direction perpendicular to the vertical cylindrical portion, A cylindrical internal valve is provided in the external valve so as to be slidable and rotatable, and a rotary valve that operates by linking the external valve and the internal valve is configured. This spot sowing mechanism for spot sowing makes it possible to perform precise spot sowing that occupies a smaller area with respect to the sowing machine than a commercially available machine, and suppresses the movement of seeds in the rotary valve.
Japanese Patent Laid-Open No. 10-23809 JP-A-11-225514 JP 2001-245507 A

  The present invention is a direct sowing type seeding machine that can be suitably used for direct sowing cultivation in rice cultivation, for ensuring direct spot sowing length within a certain range even under high-speed working conditions, and for constructing a highly precise spot sowing shape. An object is to provide a high-speed spotting mechanism.

The high speed seeding mechanism for direct sowing of the present invention is a point seeding that is horizontally rotated by an external power composed of a driving motor fixed to the base of a direct seeding type seeder and a pinion gear fixed to a horizontal output rotating shaft of the external power. A roll, a roll cover that is externally fitted to the spot sowing roll and has a seed supply port at the top, and a seed discharge port at the bottom, and a blower pipe that is fitted inside the rotation center of the spot sowing roll and blows air to the spot sowing roll A plurality of bottomed seed conveying grooves are arranged at equal intervals on the outer peripheral surface of the spot sowing roll, and a blowing pinhole for blowing out air from the blowing pipe is arranged at a position adjacent to the various child conveying grooves It is a thing.
Two to six bottomed seed conveying grooves are arranged at equal intervals on the outer peripheral surface of the spot sowing roll, and seeds are fed in a lump form from the seed supply port to the seed discharge port.
The said pinhole for ventilation was arrange | positioned in the back position of the rotation direction of the spot seeding roll adjacent to various child conveyance grooves.
The blower pipe is provided with an opening vertically below the seed discharge port of the roll cover, and the opening is opened and closed by the rotation of the spot sowing roll. The air is discharged only when the openings coincide with each other.

  The high-speed seeding mechanism for direct sowing according to the present invention is such that the air blowing pinhole of the sowing roll is arranged behind the seed conveying groove with respect to the rotation direction, so that air is blown immediately after all seeds are fed out from the seed conveying groove. It is possible to increase the falling speed of seeds that are delayed in feeding, and to ensure a long seeding length within a certain range even under high-speed working conditions, and to construct a highly precise spotting shape. is there.

One embodiment of the high-speed seeding mechanism for direct seeding according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a front view of a high-speed seeding mechanism for direct seeding according to the present invention, and includes an external power 1 composed of a driving motor fixed to a machine base M of a direct seeding type seeder, and a horizontal output rotating shaft of the external power 1. A cylindrical spot sowing roll 2 that is horizontally rotated by a fixed pinion gear (not shown), and a roll cover 3 that is externally fitted to the spot sowing roll 2 and has a seed supply port 9 at the top and a seed discharge port 10 at the bottom. And a hollow blower pipe 4 fitted into the center of rotation of the spotting roll 2, and the spotting roll 2 rotates around the blower pipe 4.
The external power 1 may be an electric or hydraulic drive motor.

As shown in FIG. 1A-A cross-sectional view of FIG. 2, the air blow pipe 4, the spotting roll 2, and the roll cover 3 are intimately fitted from the inside, and the pinion gear 5 of the external power 1 Only the spotting roll 2 rotates horizontally around the blower pipe 4 via the driving spur gear 6 of the spotting roll 2.
In addition, as shown in FIG. 1, it is preferable to provide a flange for preventing the outer side of the driving spur gear 6 of the blower pipe 4.

As shown in the perspective view of the spot sowing roll in FIG. 3, four seed conveying grooves 7 with elliptical oblong holes are arranged at equal intervals on the outer peripheral surface of the spot sowing roll 2, and adjacent to the various child conveying grooves 7. In other words, a large number of blower pinholes 8 are arranged at the rear position in the rotational direction of the spotting roll 2, and a driving spur gear that is screwed to the pinion gear 5 of the external power 1 over the entire peripheral edge of one side of the spotting roll 2. 6 is provided.
The seed transport groove 7 may have any shape as long as it receives the seed that has fallen from the seed supply port 9 of the roll cover 3, and the number is not limited to four, and is appropriately provided in the range of 2 to 6 be able to.
The blower pinholes 8 are a large number of holes penetrating through a central space having a diameter of 3 mm or less so that seeds that are continuously sent do not enter.

As shown in FIG. 2, the roll cover 3 has two openings in the vertical direction, the upper chute being the seed supply port 9 and the lower chute being the seed discharge port 10.
As shown in FIG. 2, the air pipe 4 is provided with an opening 11 only vertically below the opening of the seed discharge port 10 of the roll cover 3, and the air pipe 4 has an opening 11, It opens and closes by the rotation of the spotting roll 2, and air is discharged only when the blowing pinhole 8 of the spotting roll 2 and the opening 11 of the blowing pipe 4 coincide.

Next, the operation of the high speed seeding mechanism for direct seeding of the present invention will be described below based on the attached drawings.
As shown in the plan view of FIG. 4 in which the high-speed seeding mechanism for direct sowing is disassembled, the seeds are continuously dropped and supplied from the seed supply port 9 of the upper chute into the roll cover 3, and the seeds are continuously supplied by being dropped. Is received on the outer peripheral surface of the spot seed roll 2 rotating from the seed supply port 9 of the roll cover 3 and a predetermined amount is accumulated, and the accumulated seeds are held and rotated at the lower part of the seed supply port 9 of the roll cover 3. It falls sequentially into the seed conveyance groove 7.
The seed conveying groove 7 can collect the seeds that have been sent continuously into a predetermined amount.
The seeds that have entered the seed conveyance groove 7 by the rotating spot seed roll 2 are conveyed along the roll cover 3 to the seed discharge port 10 and fall into the field from the seed discharge port 10 as a lump.
Since the blowing pinhole 8 is arranged behind the seed conveying groove 7 with respect to the rotation direction of the spot sowing roll 2, when the opening 11 of the blowing pipe 4 coincides with the blowing pinhole 8, Blowing is started immediately after all seeds are thrown out from the seed conveying groove 7.
Thereby, the air blow from the air blow pinhole 8 hits the lump-shaped seeds that are delayed to be thrown out, and by increasing the seed falling speed, it is possible to ensure a point seeding side length within a certain range even under high-speed working conditions.

It is a front view of the high-speed spot seeding mechanism for direct seeding of the present invention. FIG. 1A is a cross-sectional view taken along arrow AA. It is a perspective view of a spot sowing roll. It is a top view which decomposes | disassembles and shows the high-speed point seeding mechanism for direct sowing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 External power 2 Point sowing roll 3 Roll cover 4 Blower pipe 5 Pinion gear 6 Drive spur gear 7 Seed conveyance groove 8 Blower pinhole 9 Seed supply port 10 Seed discharge port 11 Opening part

Claims (4)

  External power consisting of a drive motor fixed to the base of the direct seeding type seeding machine, a point seeding roll that is horizontally rotated by a pinion gear fixed to a horizontal output rotating shaft of the external power, and an outer fit to the point seeding roll It is composed of a roll cover having a seed supply port in the upper part and a seed discharge port in the lower part, and a blower pipe that is fitted in the center of rotation of the spotting roll and blows air to the spotting roll. Is a high-speed seeding mechanism for direct sowing, in which a plurality of bottomed seed transport grooves are arranged at equal intervals and a blower pinhole for blowing air from the blower pipe is disposed at a position adjacent to the various child transport grooves. .   2 to 6 bottomed seed conveying grooves are arranged at equal intervals on the outer peripheral surface of the spot sowing roll, and continuously supplied seeds are fed in a lump form from the seed supply port to the seed discharge port. The high-speed seeding mechanism for direct seeding according to claim 1.   The high speed point seeding mechanism for direct seeding according to claim 1, wherein the blower pinhole is disposed at a rear position in the rotation direction of the point seeding roll adjacent to the various child transport grooves.   The blower pipe is provided with an opening vertically below the seed discharge port of the roll cover, and the opening is opened and closed by the rotation of the spot sowing roll. The high speed spot seeding mechanism for direct seeding according to claim 1, wherein air is discharged only when the openings of the two parts coincide with each other.

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