JP2516875Y2 - Grooving cutter for seedling planting in no-till fields - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a seedling provided with a groove for planting seedlings in front of the planting claws of a rice transplanter when planting seedlings in a field that is not tilled. A groove cutter for planting.

[Conventional Technology] Conventionally, when planting seedlings in a non-tillage field where grain culms have been cut,
A set of at least two tilling claws spaced apart from each other on the left and right is provided, and a plurality of pairs of the above-mentioned tilling claws are attached to the tilling shaft of the tilling device at the same distance as the seedling planting row, and these tilling claws together with the tilling shaft. A planting method in which a seedling is planted in a partially tilled portion by rotating and a partially tilled transplanter are already known.

[Problems to be solved by the invention] In general, when a no-tillage field is cultivated with a plowing claw, the cultivated soil remains in a rough struck state, and the fluidity and the viscosity of a field that has been scratched and the viscosity However, since the plowing width by the plowing nail in the known partial tillage transplanter is equal to the width of the planting nail as well as the seedling plant of the seedling, the planting nail scraped and planted the seedling. At this time, there was a problem that the upright holding action of the seedlings was not good and the seedlings fell or floating seedlings were generated.

Therefore, in order to solve such a problem, when the disk blade of the combine cutter is used as a groove cutting means,
There is no action to push foreign matter into the soil simply by cutting the field scene linearly, and because the groove width is narrow, excessive resistance is applied to the planting claw and straw blades and weeds adhere to the disc blade blade. Then, there was a new inconvenience that it became impossible to cut the groove.

The purpose of the present invention is to provide a grooving cutter with a large number of grooving teeth having an isosceles triangular front face, which are continuously bent over the entire outer circumference of the disk, and are bent and bent alternately from the base to the left and right. The problem of the prior art is solved by using a clam and the width between the outer circumference of the tip of the groove cutting tooth is made slightly narrower than the width of the planting claw, while on the other hand, in the normal rotation, the straw of the field is grooved. It is intended to provide a groove cutting cutter for planting seedlings, which can be pushed into the field, and when it is rotated in the reverse direction, the straw in the field is discharged to both sides of the groove to improve the stable planting efficiency of seedlings.

[Means for Solving the Problems] The structure of the present invention which solves the problems of the prior art is such that a large number of relatively large groove cutting teeth are continuously connected to the entire outer circumference of the disk in a front shape of an isosceles triangle. However, each of these groove cutting teeth is bent right and left alternately from the base to form a set, and the width between the tip outer circumference of the groove cutting teeth bent left and right is made slightly narrower than the width of the planting claw. is there.

[Function] Since a large number of groove-forming teeth with an isosceles triangular front shape are continuously provided all over the outer circumference of the disk that constitutes the groove-cutting cutter, it is possible to cut with a cutter during straw cutting and mowing threshing in a field scene. Even if scattered straw is sprayed or weeds are overgrown, these foreign matters are folded in two by the forward rotation of the grooving tooth and pushed into the soil, and the reverse rotation of the grooving tooth is also increased. As a result, contaminants are discharged to both sides of the groove, and stable planting of seedlings is performed with high efficiency.

[Embodiment] Next, the embodiment of the present invention will be described in detail with reference to the drawings.

1 is a front view of a groove cutter, FIG. 2 is a vertical side view of the same as above, FIG. 3 is a side view of a transplanter using the groove cutter of the present invention, FIG. 4 is a plan view of the same, and FIG. It is an expanded side view of the principal part.

Referring to FIGS. 1 and 2, the structure of the groove cutter of the present invention will be described. A large number of groove cutting teeth 47 having an isosceles triangular front shape are integrally formed on the entire outer circumference of a disk 41a made of steel material. The groove cutting teeth 47 are alternately bent from the base portion thereof to the left and right to be distributed as a set, and the width between the outer ends of the groove cutting teeth 47 that are bent to the left and right is set to a planting claw 12 which will be described later. The groove cutter 41 is formed to be slightly narrower than the width of the groove cutter.

Next, referring to FIGS. 3 to 5, the transplanter using the groove cutter 41 of the present invention will be described. The traveling vehicle 1 has a traveling device including front wheels 2 and rear wheels 3, and the power of the engine 4 is This is a passenger rice transplanter that is distributed to the traveling device and the PTO shaft protruding rearward by the mission case 5 (or,
Tractor), and the planting device 8 is mounted on the rear side by a top link 6 and a lower link 7 so as to be able to move up and down.
This planting device 8 has a main transmission case 10 in which the input shaft is driven by a PTO shaft through an intermediate shaft 9 and a universal joint, and the main transmission case 10 causes a lateral movement in the holding cylinder 11a. A plurality of planted transmission cases 11 that are transmitted through a shaft, and a planted body that has planting claws 12 at the tip and moves up and down.
It is composed of 13 and a seedling stand 14 that reciprocates left and right.

At the lower part of only the planted transmission case 11 at both ends, the trailing wheels of the rear wheel 3 are slid, and side slides 15 having a float structure are arranged. It is pivotally supported and is connected so as to be able to move up and down by a front flap link 17, so that the lower part of the central planted transmission case 11 does not hinder the ground sliding of the side sliding body 15 and the sensing performance. A center slide body 15a having a short front-rear length and a bottom surface higher than that of the side slide body 15 by 5 to 10 mm, for example, about 7 mm is attached as necessary.
The arm 20 fixed to the middle part of the horizontal rod 18 which integrally connects the front parts of the left and right sides is interlocked with the control valve of the hydraulic cylinder for raising and lowering the planting device 8 via a plurality of links 19. The planting depth is controlled to be constant in conjunction with the integral sensing operation of the side sliding body 15.

Reference numeral 21 denotes a connecting frame composed of a vertical frame plate 22 projecting obliquely forward and upward from the planted transmission case 11 and a horizontal frame 23 made of a pipe connecting the front parts thereof, and the horizontal frame The rolling shaft 25 projecting forward from the central portion of 23 is rotatably fitted with a rolling pipe 27 welded to the lower part of the connecting bracket 26, and fixed to the lower part of the lower surface of the seedling stand 14 near the lower part. Also, both sides of the horizontal frame 30 to which the slide bar 28 protruding from the main transmission case 10 is connected, and the spring stays 31 standing on the connecting bracket 26 are connected by a pair of left and right springs 32, and the seedling mounting table 14 is connected. Is designed to absorb the load fluctuation when the vehicle laterally moves, the spring stay 31 which is generally adopted in the passenger rice transplanter
Since the rolling spring for connecting the lower both sides of the plant and the both sides of the lateral frame 23 to urge the planting device 8 to the neutral state is omitted, the planting device 8 descends and the side sliding body 15 is grounded. In the state, while rolling the left and right both sides within a certain range by the side slides 15 while following the field scene, freely rolling around the rolling axis 25, and when in the raised position,
A rolling restriction device (not shown) locks the vehicle in parallel with the traveling vehicle.

Further, rear stays 35 are fixed to the outer side surfaces of the planted transmission cases 11 at the left and right ends, respectively, and the stays 37 rotatably connected to their front portions by fulcrum bolts 36 have elongated holes 38.
The height of the front part of the front stay 37 can be adjusted up and down by tightening the adjusting bolt 39 that is inserted into the round hole and the elongated hole 38 that are provided at the front end of the rear stay 35. A grooving shaft 40 consisting of a hexagonal shaft is rotatably supported at the front end portions of these front stays 37, and a virtual extension line of the planting line formed by the planting body 13 of the grooving shaft 40 is provided. A hexagonal hole formed at the center of a disc-shaped groove cutting cutter 41 is fitted in the corresponding portion, and each groove cutting cutter 41 has a center stay in which the lower part is fitted to a sleeve 42 interposed therebetween. 43 has a vertically elongated hole (not shown) in the upper portion, and this portion can be vertically adjusted by overlapping with the front end of the rolling shaft 25 and tightening with a bolt 46.

Thus, the groove cutting cutter 41 is, for example, a planting claw 12
If the outer width is 14 mm and the inner width is 11 mm, the groove cutter
41 set outer width of 8 mm, left and right bent groove cutting teeth 4
The mutual opening angle of 7 was set to 30 degrees. If the opening angle is too large, winding of straw or the like increases, and if the opening angle is small, a desired groove width cannot be obtained, and the resistance of the planting claws 12 increases.

In the transplanter described above, water is introduced into the no-tillage field where grain stalks are cut with a combine, etc., and the water is infiltrated into the soil, or the water is appropriately flooded. By turning the planting lever 48 up and down while looking at the scale of 50, the side sliding body 15 is moved up and down to 3 to 5 cm.
Set it to 1, warm the bolts 36, 39.46 and move the front stay 37 up and down so that the depth of the groove (the lower end of the groove cutting cutter 41) is about 4 cm deeper than the lower limit of lowering of the planting claw 12. Tighten the bolts 36, 39, 46 (However, if there are many things such as straws that are entangled with the groove cutting teeth 47 of the groove cutting cutter 41,
When the field is difficult, it is possible to set the groove deeper.) The side slides 15 have a desensitized sensing position with the front part raised by the sensitivity adjustment lever 15b. When mat seedlings are stored in 14 and the aircraft is advanced while driving the planting device 8, the side sliding body 15 slides the portion where the wheel scrapes the stump into the soil and pushes it in, and the groove cutter.
41 rotates in the forward direction, and enters the soil by the weight of the planting device 8 to be driven.

At that time, since the groove cutting cutters 41 arranged side by side in the lateral direction are integrally mounted on the groove cutting shaft 40, the groove cutting cutters 41 smoothly rotate in the same state. Because it is an equilateral triangle, even if there are foreign matter such as cut straw, straw dust, or weeds scattered on the ground surface, the cut straw will be formed by folding it into the soil and forming a groove. The sleeve 42, which has escaped without being caught and has the grooved shaft 40 installed therein, scrapes up the soil accumulated by the front wheel 2 or the rear wheel 3 so that the side sliding body 15 and the center sliding body 15a Makes a stable gliding.

By pushing down such stumps and weeds, the ventilation to the planted seedlings and the daylighting property are improved to improve the growth after planting.

In addition, the side surfaces of the groove are grooved teeth 47 protruding alternately in opposite directions.
Due to this, a stepped rough surface may occur and the soil on the side of the groove may deform and invade into the groove, but the cleaving of the groove cutting teeth 47 is large and the groove width is sufficiently larger than the thickness of the groove cutting cutter 41. The resistance is extremely low as it protrudes widely and alternately to one side, and when the foreign matter is folded in two and pushed in, the deformation and collapse of the groove are also reduced, and the seedlings are smoothly inserted into the groove and planted. Can be attached.

While the planting body 13 moves up and down, the matting seedlings in the seedling mounting table 14 which are reciprocally moved in the lateral direction by the planting claws 12 are scraped off one by one to form the grooves formed by the grooving cutter 41. It intrudes from above, and the push-out claws 12a push out and plant it near the lower end of the descent.

At this time, the width of the groove is the groove cutting tooth of the groove cutting cutter 41.
Since the clam width of 47 is narrower than the outer width of the planting claw 12, the width of the groove formed by the groove cutting cutter 41 is narrower than the outer width of the planting claw 12, and the planting seedling 12 is When planting seedlings by invading the groove, the outer edge of the planting claw 12 slightly scrapes off the side surface of the groove, but the soil inside the groove is mud so that it smoothly invades, and the planted seedlings, especially , Both side surfaces of the root stump are in contact with the side surface of the roughened groove or the groove formed on the side surface of the groove by the planting claw 12 and the pushing claw 12
Since a forcibly pushes the root stock of the seedling into the narrow groove below the tip of the planting claw 12, both side surfaces of the root stock are clamped by the both side surfaces of the groove, and the seedling is well separated and the seedling is It is kept in an orderly standing posture. In the above case, there are relatively few impurities, but when there are many impurities such as cut straw and long straw, the impurities are folded in two to form a groove, and seedlings are allowed to enter between the impurities. Can be planted. Even if the set width is substantially equal to the outer width of the planting claw 12, the groove width formed by the groove cutting cutter 41 may be narrower than the set width of the groove cutting teeth 47, probably because the soil is collapsed. Together with the fact that the side surface becomes rough and the root plant bulges laterally when pushed out from the tip of the planting claw 12 by the pushing claw 12a. It is possible to obtain a holding action by sandwiching with foreign matters.

When the distance between the planted rows is equal to the distance between the stumps, the side sliding body 15 slides on the part where the stumps are pushed into the soil by wheels, and when there is a difference in height in the field, the left and right sides The sliding body 15 is leveled by the integrated lifting action, and the amount of further lifting is detected as an average value in the center of the machine width.
Is transmitted to the control valve via the hydraulic cylinder, the top link 6 and the lower link 7 swing up and down, and the planting device 8 moves up and down following the height of the field.

In this case, the sensitivity adjustment of hydraulic pressure is set to the most insensitive side where the side sliding body 15 sinks deeply all over, and it is possible to roll freely within a certain range without restricting the rolling around the rolling axis 25. Therefore, the planting device 8 is
The side sliding body 15 is advanced so as to be surely pressed against it, and the groove cutter 41 is prevented from rising so that proper groove planting can be performed.

In addition, when planting for one stroke is completed and the aircraft is traveling in the headland, a grooving device including a grooving shaft 40 and a plurality of grooving cutters 41 attached to it is installed in front of the planting device 8. Since the entire length of the airframe does not change just by mounting it on the section, and the weight that it increases is not so large, it is possible to perform the airframe traveling with the operability and the radius of travel that are almost the same as those of the riding rice transplanter.

Furthermore, when planting in a field with this device, the side wall of the groove is more likely to collapse than in the paddy field after harvesting, but as described above, the width of the groove formed by the groove cutter 41 is the planting claw. Since it is slightly narrower than the outer width of 12, seedlings can be planted in an orderly standing posture without falling.

This transplanter is configured to forcibly rotate and drive the groove cutter 41. A horizontal support shaft 51 is welded to the vertical frame plate 22 on one side, and the support shaft 51 is allowed to rotate freely. The two sprocket wheels 52 and 53 are attached to the boss which is fitted and positioned, and the chain 56 is hooked on one sprocket wheel 52 and the sprocket wheel 55 attached to the horizontal shaft 11b in the holding tube 11a, and the other sprocket wheel 53 and the groove cutting. The chain 58 is hung on the sprocket 57 attached to the groove cutting shaft 40 of the cutter 41, and the groove cutting shaft 40 is driven by the horizontal shaft 11b while decelerating. In the case of (counterclockwise direction in the figure), the peripheral speed is set to about 1.3 times the running speed, and if the groove cutting cutter 41 is forcibly driven in this way, the groove cutting cutter 41 bites well and the groove is more accurate. Can it be formed in depth and width The depth of the groove is about 2 cm deeper than the lowest point of the locus of the planting claw 12.

Further, since the positions of the fulcrum bolt 36 and the support shaft 51, which are the center of rotation of the front stay 37 when the groove cutting cutter 41 is adjusted up and down, are different, a tension roller (not shown) is attached to the chain 58, or The rear stay 35 is resembled upward, and the position of the fulcrum bolt 36 is made to coincide with the support shaft 51 in a side view.

Further, the groove cutter 41 can be rotated in the reverse direction by switching the rotation drive transmission mechanism.

[Effect of the Invention] According to the configuration of the present invention as described above, the following effects can be obtained.

(A) Grooving cutter for planting seedlings has a large clam, so the groove cutting resistance is extremely small despite the use of a disc blade as the groove cutting means, and foreign matter such as straw and weeds is cultivated in a no-till field. Even if there are many, it is possible to smoothly push the impurities into the soil by the isosceles triangular groove cutting teeth that are connected to the outer circumference of the groove cutting cutter, without hindering the planting of seedlings.
It is possible to accurately form a groove having a predetermined width and a predetermined depth.

(B) The grooving cutter is composed of a large number of isosceles triangular grooving teeth arranged in a row on the entire outer circumference of the disk, so that it can be rotated normally and reversely in that state. In the case of rotation, the contaminants can be folded into two and pushed into the soil, and in the case of reverse rotation, the contaminants can be wiped away to both sides of the groove to form grooves for seedling planting. The rotation direction of the groove cutter corresponding to the conditions can be selected, and the seedling planting efficiency can be improved.

[Brief description of drawings]

1 is a front view of a groove cutter, FIG. 2 is a vertical side view of the same as above, FIG. 3 is a side view of a transplanter using the groove cutter of the present invention, FIG. 4 is a plan view of the same, and FIG. It is an expanded side view of the principal part. 41 …… Grooving cutter, 41a …… Disk, 47 …… Grooving tooth.

Claims (1)

(57) [Scope of utility model registration request] 1. A large number of relatively large groove cutting teeth are continuously connected to the entire outer circumference of the disk, the front shape being an isosceles triangle.
Each of these groove cutting teeth is bent from the base part to the left and right alternately to form a set, and the width between the tip outer circumference of the groove cutting teeth bent to the left and right is made slightly narrower than the width of the planting claw. Grooving cutter for seedling planting in non-tillable fields.