JP2007020427A - Partial tilling and direct-sowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the trouble of the rotting of a seed immediately before sprouting caused by the oxygen deficient state of the seed soaked for a long period in the undrained rainwater collected in a tilled furrow for forming a sowing bed of seeds of paddy rice plant after the direct sowing work on a dried paddy field by a partial tilling and direct-sowing apparatus. <P>SOLUTION: The apparatus has a plurality of tillage tines 21 for forming a tilled furrow D. At least two of the tines 21 are attached in a manner directing the tip end of the lateral blade outward at the right and left sides relative to the axial direction of the tilling shaft 22, and the tip end of the lateral tooth (b) of the other multiple tillage tines 21 are directed inward at the right and left sides relative to the axial direction of the tilling shaft 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tilling claw provided in a partial tillage direct sowing apparatus that partially plows a non-tillage farm field to perform sowing and fertilization.

  Conventionally, a partial tillage direct sowing apparatus that partially cultivates a non-tillage field and sowings and fertilizes is coupled to be able to be lifted and lowered via a lifting link mechanism provided at the rear of the machine body such as a tractor, and the partial tillage The direct sowing apparatus includes a tilling unit connected to the top link and the lower link of the lifting link mechanism, and a fertilizing and sowing unit connected to a tool bar protruding backward from the tilling unit via a parallel link mechanism.

The tillage unit is rotatable between a gear case to which PTO power is input from the machine body, a cylindrical frame protruding left and right from the gear case, a side frame protruding downward from the left and right ends of the cylindrical frame, and a left and right side frame. A tilling shaft (claw shaft) supported on the plow and a plurality of tilling portions provided at predetermined intervals in the axial direction of the tilling shaft, and tilling a non-tillage field in these tilling portions A claw and a cover that covers both sides and the upper side of the tilling claw, and further, the cultivation claw is a grooved claw for cultivation, and is longer than the grooved claw and is cultivated in the field on the excavation action surface at the tip. A partial tillage direct sowing device is known that is composed of a scraping claw that scrapes off the soil accumulated in the cover and reduces the occurrence of power loss due to the resistance of the soil attached to the inner wall of the cover (for example, Patent Literature Reference.).
JP 2000-139104 A (page 2-3, FIG. 1 to FIG. 3)

  And in the dry rice direct sowing work of the rice by the partial tillage direct sowing apparatus described above, first, a tilling groove is formed by excavating a non-plowed field scene with a tilling nail provided in the tilling unit, and behind the tilling nail. After collecting soil blocks to be released by a cover to form a sowing bed on the tilling groove, and then forming a sowing groove on the sowing bed with a groove cutting blade provided in the sowing unit arranged behind the tilling unit, The seeding groove is seeded while supplying the seeds of the paddy rice in the seed tank via the feeding device, and the sowing groove is covered with a soil covering plate provided for the sowing unit, and the upper part of the sowing groove is pressed with a pressure reducing roller and leveled. It was.

  However, if it rains heavily after direct dry sowing as described above, rainwater is collected in the plowing trench excavated to form a seed bed for paddy rice seed, and the seed When soaked for a long period of time, there was a risk of a serious problem that the seed immediately before germination would rot due to lack of oxygen.

  The present invention has been made to solve the above-mentioned problems, and a plurality of tilling claws are attached in a radial manner with predetermined seeding strips in the axial direction of the tilling shaft, and the tilling claws are rotationally driven. A cultivating unit that forms a cultivating groove in a non-plowing field by collecting and collecting a soil mass released behind the cultivating claws to form a sowing bed on the cultivating groove, and the cultivating unit A groove cutting blade that forms a sowing groove in the sowing bed, a feeding device that feeds and seeds seeds in a seed tank into the sowing groove, and a covering plate that covers the sowing groove after seeding In the partial tillage direct sowing apparatus in which a sowing unit including a pressure reducing roller that presses the upper part of the sowing groove is arranged, a plurality of tilling claws forming the tilling groove are continuously formed from an attachment base to the tilling shaft. The vertical blade and the tip of the vertical blade on one side A plurality of tilling claws, and a plurality of tilling claws attached to the end of the lateral teeth in the left and right direction in the axial direction of the tilling shaft, It is characterized in that it is composed of the one attached to the left and right outward in the direction.

  According to the present invention, a plurality of tilling claws are attached in a radial manner with a predetermined sowing line in the axial direction of the tilling shaft, and the tilling grooves are formed in a non-tillage field by rotating these tilling claws. A cultivating unit that collects soil blocks released to the rear of the tilling nail and forms a sowing bed on the tilling groove, and a sowing groove is formed on the sowing bed behind the tilling unit. A groove cutting blade, a feeding device for feeding seeds in a seed tank to the sowing groove, a soil covering plate covering the sowing groove after seeding, and a pressure reducing roller for pressing and leveling the upper part of the sowing groove. In the partial tillage direct sowing apparatus in which the sowing unit is provided, the plurality of tilling claws forming the tilling groove are formed by a vertical blade portion continuously formed from a mounting base to the tilling shaft, and a tip of the vertical blade portion And a side blade part formed by bending to one side, and The plurality of tilling claws are composed of a lateral tooth tip attached to the left and right inward in the axial direction of the tilling shaft and a lateral blade tip attached to the left and right outward in the axial direction of the tilling shaft. As a result, a tilling groove having a desired width is formed by a tilling claw in which the end of the lateral tooth portion is attached in the left and right inward in the axial direction of the tilling shaft, and the end of the lateral blade portion is laterally outward in the axial direction of the tilling shaft. The plowing claw attached to the pavement forms a concave part from both sides of the plowing groove to both ends of the bottom, and then a soil crack is derived from the concave part. Therefore, when heavy rain has fallen after the direct sowing operation of the dry paddy, while allowing rainwater to collect in the plowing trench excavated to form a seed sowing bed to penetrate the cracked portion of the soil derived from the recessed portion It becomes possible to drain the water, and it is possible to avoid the occurrence of a serious problem that the seeds are dipped in rainwater for a long time to become deficient and rot before germination.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG.1 and FIG.2 is the side view and top view of the partial tillage direct sowing apparatus 11 connected via the raising / lowering link mechanism with which rear body parts, such as a tractor, are equipped, The said partial tillage direct sowing apparatus 11 is the said raising / lowering link mechanism. And a sowing unit 16 detachably coupled to the tool bar 13 and a tool bar 13 projecting rearward from the tillage unit 12 via a holder 14 and a parallel link mechanism 15 so as to be moved up and down.

  The tillage unit 12 includes a gear case 17 to which PTO power is input from the machine body side such as a tractor, and cylindrical arms 18L and 18R that also serve as lateral transmission cylinders of the tillage unit 12 on both the left and right sides of the gear case 17, A chain case 19 as a transmission case is fixed to the outer end (left end side) of the left cylindrical arm 18L, and a side plate (not shown) is fixed to the outer end (right end side) of the right cylindrical arm 18R. A so-called side drive type transmission mechanism is used, in which a predetermined sowing line exists between the side plate and the side plate, and a tilling shaft 22 is rotatably supported by a plurality of tilling claws 21 screwed radially. ing. A tail wheel 23 for adjusting the tilling depth is supported on the tool bar 13 behind the tilling unit 12.

  The sowing unit 16 includes a seed tank 24 for storing seeds such as rice and wheat, a feeding device 25 for feeding seeds in the seed tank 24 toward a sowing groove, and a groove cutting blade for forming a sowing groove. 26, a cover plate 27 for covering the seeding groove after seeding, a pressure reducing roller 28 for pressing the upper part of the seeding groove, and a ground ring 29 are provided.

  More specifically, the PTO power input to the gear case 17 described above is transmitted to the tilling shaft 22 via the chain case 19 and is screwed radially in the axial direction of the tilling shaft 22 with a predetermined seeding line between them. When the plurality of tilling claws 21 are driven to rotate forward (in the direction of the arrow A in the figure) in the same rotational direction (forward rotation) as the wheel of the tractor or the like to which the partial tillage direct sowing apparatus 11 is pulled, the no-tillage state In this field S, only the seed sowing position can be partially cultivated.

  The plurality of tilling claws 21 that are radially screwed on the tilling shaft 22 are, as viewed from the side, a vertical blade portion a having a curved shape in the outer circumferential direction formed continuously from the mounting base B, and the vertical blade portion a. There is a horizontal blade portion b formed by bending the tip of the blade portion a to the left or right side with respect to the rotation direction of the tilling shaft 22, and on the upper surface side of the horizontal blade portion b, an action of scooping up and releasing the soil mass As shown in FIG. 3, the tip of the lateral tooth portion b of at least two of the tilling claws 21 is arranged in the axial direction of the tilling shaft 22. On the other hand, the tip of the lateral tooth b of the other plurality of tilling claws 21 is threaded inwardly in the left and right in the axial direction of the tilling shaft 22, and is thus attached to the tilling shaft 22. By rotating a plurality of tilling claws 21 screwed radially, forward rotation , And it is capable of forming a narrow (about 50mm wide) of KoOkoshimizo D shown in FIGS.

  That is, as described above, the tilling groove D having a desired width is formed by the plurality of tilling claws 21 in which the tip of the lateral tooth portion b is attached to the left and right in the axial direction of the tilling shaft 22, and By at least two tilling claws 21 attached to the left and right outwards in the axial direction of the tilling shaft 22, recessed portions E and E are formed from both sides of the tilling groove D to both ends of the bottom, and then the upper surface of the horizontal blade b The cracks C and C of the soil are derived from the recesses E and E by the radiating action of the rake face provided on the side. Therefore, when heavy rain falls after the direct sowing operation of the dry paddy, the rainwater C which is derived from the recessed portions E and E is caused by the rainwater which is to be collected in the plowing trench D excavated to form a seed sowing bed. , C can be drained while infiltrating into the C part, and as in the conventional case, the seeds are immersed in rainwater for a long time and become deficient in oxygen. You can avoid that.

  In addition, a rear cover 32 is provided at the rear end of the rotary cover 31 formed in an arc shape that covers the top of the above-described tilling claw 21 and can be rotated up and down in the direction of the arrow G in the figure with the fulcrum P as the center of rotation. The rear cover 32 is configured to be able to adjust the vertical height position (rotation height position) via a rod 33 connected to a support member 31 a provided on the rotary cover 31.

  And since most of the soil blocks plowed and crushed by the tillage claws 21 that are driven to rotate in the forward direction are released to the rear of the tillage claws 21, the soil blocks are efficiently collected and appropriately seeded on the tillage grooves D. In order to form the floor F (see FIGS. 3 and 4), the leveling body 34 covering the rear side of the tilling claw 21 is configured to be fixed from the lower surface side of the rear cover 32 by using bolts 35 and nuts 36. .

  Further, the leveling body 34 can be advanced and retracted as indicated by a two-dot chain line in the vertical direction of the rear cover 32 (the direction indicated by the arrow H in FIG. 1), and by the vertical rotation of the rear cover 32 in the direction indicated by the arrow G in the figure. By using height position adjustment together, it is possible to form an appropriate sowing bed F according to the growth condition and soil quality of the weeds in the field S in the no-till state.

  That is, as shown in FIG. 4, the leveling body 34 is formed into a U-shaped mass collecting shape that covers the rear side of the tilling claw 21 and the rear end side is gradually narrowed, and further the side-viewing shape 34 a of the leveling body 34. 1 is formed so that the lower side is wide as shown in FIG. 1, so that the soil mass is effectively collected while suppressing the scattering of the soil mass released to the rear of the tilling claw 21 and an appropriate sowing bed F is obtained. Can be formed.

The side view of a partial tillage direct sowing apparatus. The partial omission top view of a partial tillage direct sowing apparatus. N arrow line view in FIG. H arrow line view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Partial tillage direct seeding device 12 Tillage unit 16 Seeding unit 21 Tillage claw 22 Tillage shaft 24 Seed tank 25 Feeding device 26 Groove blade 27 Covering plate 28 Pressure roller a Vertical blade portion b Horizontal blade portion D Tillage groove F Seeding bed

Claims (1)

  A plurality of tilling claws (21) are attached radially with a predetermined sowing line in the axial direction of the tilling shaft (22), and the tilling claws (21) are rotationally driven to turn into a non-tillage field. A tilling unit (12) that forms a tilling groove (D) and collects a lump to be released behind the tilling claws (21) to form a seeding bed (F) on the tilling groove (D). ), A groove cutting blade (26) that forms a sowing groove in the sowing bed (F) behind the tillage unit (12), and seeds in the seed tank (24) are fed out and seeded in the sowing groove. A part where a feeding device (25), a covering plate (27) covering the seeding groove after seeding, and a seeding unit (16) including a pressure reducing roller (28) for pressing and leveling the upper part of the seeding groove are arranged. In the tilling direct sowing device (11), a plurality of tilling claws (2) forming the tilling groove (D) ) Is a vertical blade portion (a) formed continuously from the base attached to the tilling shaft (22), and a horizontal blade portion (b) formed by bending the tip of the vertical blade portion (a) to one side. And having the plurality of tilling claws (21) attached to the lateral tooth portion (b) with the tip of the lateral tooth portion (b) inward in the lateral direction and the tip of the lateral blade portion (b). The partial tillage direct sowing apparatus characterized in that it is configured with the one attached to the left and right outwards in the axial direction of the tillage shaft (22).

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