JPH0646888B2 - Grooving device for direct seeding - Google Patents

Description

TECHNICAL FIELD The present invention relates to a direct seeding grooving device used for forming a groove for direct seeding.

More specifically, the present invention makes it possible to form a stable direct sowing groove in which deep draining deep grooves having a deep groove depth are arranged on both sides of a shallow sowing groove for shallow sowing, and the seeds directly seeded are evenly distributed. The present invention relates to a grooving device for direct sowing, which germinates and grows in a large amount and greatly contributes to improvement in productivity of direct sowing.

[Conventional technology]

The conventional sowing and covering method in the direct sowing method is usually to provide a grooving protrusion on the towing vehicle in a fixed state and sow the soil on the direct sowing surface such as a paddy field as the grooving protrusion advances as the towing vehicle progresses. A groove was formed, and seeds were discharged from the seeding tube provided correspondingly to the formed seeding groove, and then soil was covered by the soil cover action of the soil cover plate provided in the seeding tube.

[Problems to be Solved by the Invention]

However, when sowing and covering with soil in this way, there were the following problems.

Since the sowing groove was formed by simple soil slitting by the movement of the groove cutting pieces, the sowing groove formed was uneven and unclear. Therefore, the height of each seed discharged from the seeding tube to the seeding groove was not constant and it was unavoidable that the soil cover thickness was not uniform. In addition, since the seeding groove was formed directly on the uneven direct sowing surface for seeding and covering the soil, when water was supplied to the directly seeded surface by rainfall or brackish water, it was difficult to drain water smoothly and the accumulated water part Occurred in places. In the conventional direct sowing, there were serious problems such as delay of germination and lack of stock due to lack of light, lack of oxygen and excess water due to such uneven soil coverage and poor drainage, and productivity was poor.

The present invention has been completed by researching a leveling condition most suitable for direct sowing, and an object of the present invention is to provide a grooving device for direct sowing, which greatly contributes to productivity improvement in the case of the direct sowing method. .

[Means for Solving the Problems]

In order to solve the above problems, the present invention employs the following means.

That is, a direct seeding grooving device according to the present invention (hereinafter referred to as a device) is used to form deep drainage deep grooves 11 with a deep groove depth on both sides of a shallow groove 9 for seeding with a shallow groove depth. A shallow groove forming blade 3 for forming a shallow groove 9 having a diameter larger than the diameter of a rotary shaft 2 made of a round shaft that rotates around an axis while being in contact with the ground. Deep groove forming blades 5 which are provided so as to coincide with each other and which have a diameter larger than the diameter of the shallow groove forming blades 3 on both sides of the shallow groove forming blades 3 are formed on the rotary shaft 2 by aligning their axes. The groove cutting blade 6 provided is provided on the towing vehicle so as to be rotatable around its axis at a required speed, and the groove cutting blade 6 is configured to rotate in the traveling direction of the towing vehicle. The shallow groove forming blade 3 and the deep groove forming blade 5 each have a grooving section that is cut along a plane including the axis thereof. The outer shape of the facing portions 13 and 13 is formed in a symmetrical V-shaped or U-shaped taper, and the traveling length of the towing vehicle per unit time is L, and the circle of the rotary shaft 2 is a circle. When the circumference is 1 and the number of rotations of the groove cutting blade 6 per unit time is N, the relationship N × l> L is satisfied.

[Action]

However, when the groove cutting blade 6 is rotated at a required speed as the towing vehicle 7 advances, the rotation direction of the groove cutting blade 6 is set to the traveling direction of the towing vehicle 7, and the shallow groove forming blade 3 and the deep groove forming blade 3 are formed. 5
Since the outer shape of the groove cutting portion is formed so as to have a tapering V-shape or U-shape, the shallow groove forming blade 3 and the deep groove forming blade 5 are V-shaped by pressing the ground surface in a comfortable state. -Shaped or U-shaped shallow groove 9 and deep groove 11 are formed, thereby forming a trapezoidal ridge 1 in which the shallow groove 9 is formed at the top end.
7 is formed. In addition, since the relationship of N × l> L is set to be satisfied, the rotary shaft 2, the shallow groove forming blade 3, and the deep groove forming blade 5 rotate excessively (compared to the case of rolling normally without slipping). Rotation at a high speed), excessive slip occurs between these and the shallow groove groove wall surface 20, the deep groove groove wall surface 21, and the ridge end 19, and as a result, the shallow groove and deep groove groove wall surfaces 20 and 2
1 and the ridge tip 19 will be finished as a stable surface with little unevenness.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 5, in the device 1 according to the present invention, a groove cutting blade 6 provided with a shallow groove forming blade 3 on a rotary shaft 2 and deep groove forming blades 5 on both sides thereof cannot be rotated by a towing vehicle 7. By the required rotation of the groove cutting blade 6 as the towing vehicle 7 advances, the shallow groove 9 for seeding with a shallow groove depth is formed by the shallow groove forming blade 3 and is positioned on both sides thereof. The deep groove 11 for deep drainage is formed by the deep groove forming blades 5 and 5 on both sides. This will be described more specifically as follows.

The groove cutting blade 6 fixes a large-diameter deep groove forming blade 5 in a juxtaposed state at a required interval on a relatively long rotary shaft 2 pivotally supported at both ends of a support frame 12 connected to a towing vehicle 7. In addition, the shallow groove forming blade 3 having a small diameter is fixed at the central portion of the adjacent deep groove forming blades 5 and 5.

As shown in FIG. 4, the shallow groove forming blade 3 and the deep groove forming blade 5 have a V shape in which the outer shapes of the facing portions 13 and 13 to be grooved portions of the cross section cut along the plane including the axis thereof are tapered. It is formed in a symmetrical shape having a letter shape.

The groove cutting blade 6 having such a configuration is rotationally driven by, for example, the power source of the towing vehicle 7, and its rotation direction is the traveling direction of the towing vehicle 7 (direction of arrow f shown in FIG. 5). . Also, the traveling length of the towing vehicle per unit time is L,
When the circumference of the rotary shaft 2 is l and the number of rotations of the groove cutting blade 6 per unit time is N, the relationship of N × l> L is set between them. The product of N and l is set according to the soil condition and water content of the ground so that the wall surface of the shallow groove, the groove wall surface of the deep groove, and the ridge end are finished as a stable surface with little unevenness. For example, on a ground with a high water content such as a wet field, there is no problem even if the degree of slip caused by excessive rotation of the shallow groove forming blade 3, the deep groove forming blade 5, or the rotary shaft 2 is small, so this product is, for example, about 1.3 L. And set relatively small. On the other hand, on the ground with a low water content such as a dry field or a field, it is necessary to increase the degree of slip due to excessive rotation, so this product is set to a relatively large value, for example, about 1.5 to 2 L.

The rotation direction of the groove side blade 6 may be opposite to the above-mentioned direction. However, when the rotation direction is the above-mentioned rotation direction, the rotating shaft 2, the shallow groove forming blade 3, and the deep groove forming blade 5 exhibit a good pressing effect. As a result, a surface with less unevenness is formed, which is preferable.

In FIGS. 3 and 5 to 6, reference numeral 14 is a shallow groove forming blade 3.
The seeding pipe is provided so as to correspond to the shallow groove 9 formed by, and the seed supplied from the seed feeding device 15 shown in FIGS. 1 and 2 is discharged from the seeding pipe 14 to the bottom of the shallow groove 9. Also, in FIG. 5 to FIG. 6, reference numeral 16 is a soil cover plate for applying an appropriate thickness of soil to the seeds discharged to the bottom of the shallow groove.
It is being fixed to 4 through the spring member 17.

However, when the groove cutting blade 6 is rotated at a required speed as the towing vehicle 7 advances, as described in the above-mentioned "Operation", the multiple grooves of the deep groove 11 for drainage having a deep groove depth are formed into the deep groove forming blade. 5, the trapezoidal ridges 18 formed as a result have a shallow groove forming blade 3 at the longitudinal center of the top end 19.
Thus, the shallow groove 9 is formed. The groove wall surface 20 of the shallow groove 9 and the groove wall surface 21 of the deep groove 11 thus formed
Is formed as a stable surface with little unevenness due to the excessive slip phenomenon that accompanies the excessive rotation of the shallow groove forming blade 3 and the deep groove forming blade 5, and therefore, regarding the shallow groove 9, its cross section has a clear V-shape. Present. Therefore, the various elements discharged from the seeding pipe 15 to the shallow groove 9 are present at the same height position (shallow groove bottom). In addition, since the ridge top end 19 is formed flat, when the soil at the ridge end is brought close to the soil by the soil cover plate 16 as shown in FIGS. 5 and 6, the soil is uniformly covered. Because of this, the cover soil thickness is naturally uniform.

Further, since the deep groove 11 is also formed as a V-shaped groove in a clear and stable state, surplus water at the time of rainfall or flooding can be smoothly discharged using the deep groove 11 as a drainage channel.

The deep groove 11 formed by the groove cutting blade 6 is mainly used for draining purposes, but the deep groove 11 may also be used as a fertilizing groove. In that case,
A fertilizer pipe having the same structure as the seeding pipe is attached so as to correspond to the formed deep groove 11.

7 to 8 and 10 to 11 show other aspects of the groove cutting blade 6 according to the present invention. In the shallow groove forming blade 3 and the deep groove forming blade 5 of the groove cutting blade 6 shown in FIG. 7, the outer shapes of the facing portions 13 and 13 to be the groove cutting portions of the cross section cut along the plane including the axis thereof, It is formed in a symmetrical shape having a U-shape that is tapered. Further, the shallow groove forming blade 3 of the groove cutting blade 6 shown in FIG. 8 has a brim portion 22 extending around a tip end portion thereof in a direction perpendicular to the axis. FIG. 9 shows the shallow groove 9 formed by the shallow groove forming blade 3 and is formed as a Y-shaped groove. When sowing the bottom portion 23 of the Y-shaped groove formed in this manner, seeds 24 are placed in the narrow groove at the bottom portion.
Will be hooked and the position of the seed will be fixed. Therefore, even if no special soil covering means is taken, it is expected that the water will flow through the shallow groove 9 due to rainfall or the like and the bottom of the shallow groove will collapse to cover the soil in a desired state.

10 to 11 show another aspect of the groove cutting blade 6 according to the present invention, and the peripheral surface of the groove cutting blade 6 is formed as a curved surface with the folding curve 25 as a boundary. With such a configuration, even if the soil is sticky, it is preferable because the soil can be removed well when grooving.

〔The invention's effect〕

Since the device according to the present invention is configured as described above,
To form a shallow groove and a deep groove that have a uniform groove depth and a groove wall that is finished as a stable surface with few irregularities due to the excessive slip phenomenon that accompanies the excessive rotation of the shallow groove forming blade, the deep groove forming blade, and the rotating shaft. You can

Therefore, it is possible to form a uniform soil cover thickness for each child, which is completely different from the case of the conventional direct sowing in which a seeding groove is formed by cutting the soil with a groove cutting projection, and the seeding groove is sown to cover the soil. In addition, the deep groove can function as a drainage channel to facilitate smooth drainage.

Thus, according to the present invention, regardless of whether it is a wet field, a dry field, or a field, it is possible to perform the most suitable soil preparation for direct sowing, and therefore, the directly seeded seeds are uniformly germinated and grown. Therefore, the productivity of direct seeding can be significantly improved.

[Brief description of drawings]

1 and 2 are perspective views showing a state in which the device according to the present invention is attached to a tow vehicle, FIG. 3 is a perspective view showing a groove cutting blade which constitutes the device according to the present invention together with a seeding tube, and FIG. Sectional drawing which shows the shallow groove and the deep groove formed by the groove cutting blade, FIG. 5 is a sectional view for explaining the seeding state by the seeding tube and the soil covering state by the soil cover plate attached to this seeding tube, and FIG. 6 is a perspective view thereof. FIGS. 7 to 8 are front views showing other aspects of the groove cutting blade,
9 is a sectional view showing the shallow groove and the deep groove formed by the groove cutting blade shown in FIG. 8 together with the seeding state in the shallow groove, FIG.
0 to 11 are front views showing other aspects of the groove cutting blade. 1 ... Device, 2 ... Rotation axis, 3 ... Shallow groove forming blade, 5 ...
Deep groove forming blade, 6 ... Groove cutting blade, 9 ... Shallow groove, 11 ... Deep groove, 13 ... Opposing portion of groove cutting portion, L ... Traveling length of towing vehicle per unit time, l ... Rotation Circumference of shaft, N ... Number of rotations of groove cutting blade per unit time.

Claims (1)

[Claims] 1. A grooving device for direct seeding, which is used for forming deep drainage deep grooves 11 having a deep groove depth on both sides of a shallow groove 9 for seeding, which is in contact with the ground. Meanwhile, a shallow groove forming blade 3 for forming the shallow groove 9 having a diameter larger than that of the rotary shaft 2 formed of a round shaft rotating around the axis line is provided such that the axis lines thereof coincide with each other, and the shallow groove forming blade 3 is provided. On both sides of the groove, a deep groove forming blade 5 for forming the deep groove 11 having a diameter larger than that of the shallow groove forming blade 3 is provided on the rotary shaft 2 with their axes aligned with each other. Is provided on the towing vehicle so that it can rotate at a required speed, and the groove cutting blade 6 rotates in the advancing direction of the towing vehicle. The shallow groove forming blade 3 and the deep groove forming blade 5 are respectively , The outer shape of the facing portions 13 and 13 to be the groove cutting portion of the cross section cut along the plane including the axis is tapered. It has a V-shaped or U-shaped symmetrical shape, and the traveling length of the towing vehicle per unit time is L, the circumference of the rotary shaft 2 is the number of revolutions of the groove cutting blade 6 per unit time. The groove cutting device for direct seeding is characterized in that the relationship of N ×> L is satisfied, where N is N.