JP2006325506A - Partial tilling direct sowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a large cover is required to be provided to prevent that tilled and crushed fine clods are laid aside and scattered, when tilling tines attached to a tilling unit constituting a partial tilling direct sowing apparatus are inversely rotated and driven, and a problem wherein the occurrence of power loss and the increase in the weight of the tilling unit due to the resistance of soil adhered to the inner wall of the cover are caused. <P>SOLUTION: Levelers 34 are provided on the rear side of the tilling tines 21 attached to the tilling shaft 22 of the tilling unit 12 to normally rotate and drive the tilling tines 21 and collect the clods tilled and crushed with the tilling unit 12 to form proper sowing beds F on narrow tilled grooves D. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a partial tillage direct sowing apparatus that partially plows a non-plowed field and performs sowing and fertilization.

  Conventionally, a partial tillage direct sowing device that partially cultivates a non-tillage field and sowings and fertilizes is connected to the rear portion of the machine body such as a tractor so as to be lifted and lowered. 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 plowing a non-tillage field in these tilling portions There has been known one in which a nail is provided and partial tilling of the field is made possible by rotationally driving the tilling nail (see, for example, Patent Document 1).
JP-A-11-103616 (page 2-4, FIGS. 1 to 3)

  Then, the tilling claw provided in the tilling unit constituting the conventional partial tillage direct sowing apparatus is rotationally driven (reversed) in the direction opposite to the rotation direction (forward rotation) of the wheel of the tractor etc. to which the partial tillage direct sowing apparatus is pulled. Thus, the soil block to be cultivated and crushed is made fine so that a sowing bed suitable for rice or wheat can be formed.

  However, if the tillage claws are reversed as described above to plow a non-plowed field, the amount of the finely crushed soil blocks will be released and scattered. A large cover that covers both the left and right sides and the upper side of the nail had to be provided, and there were problems such as generation of power loss due to the resistance of soil attached to the inner wall of the cover and an increase in the weight of the tillage unit.

  The present invention has been made to solve the above-mentioned problems, and is connected via a lifting link mechanism provided at the rear part of the machine body, and includes a tilling unit that forms a tilling groove by a tilling claw that is driven to rotate forward. In a partial tillage direct sowing apparatus equipped with a sowing unit attached to the rear of the tillage unit, in order to collect soil blocks plowed and crushed by the tilling claws and to form an appropriate sowing bed on the tilling grooves, The first feature is that a leveling body is provided on the rear side.

  A second feature is that the leveling body is fixed so as to be able to advance and retreat in the vertical direction of the rear cover attached to the rear end of the rotary cover that covers the top of the tilling claw so as to be vertically rotatable.

  A third feature is that the leveling body has a U-shaped or arc-shaped mass collection shape.

  According to the first aspect of the present invention, most of the soil blocks cultivated and crushed by the tillage claws that are driven to rotate in the forward direction are released to the rear of the tillage claws. In order to form an appropriate sowing bed on the ditch, by providing a leveling body on the rear side of the tilling nail, the soil block is collected appropriately while suppressing the scattering of the earth lump released to the rear of the tilling nail. A seeding floor can be formed, and problems such as generation of power loss due to the resistance of soil attached to the inner wall of the cover and an increase in the weight of the tillage unit as in the past can be solved.

  According to the second aspect of the present invention, the leveling body is fixed to the rear end of the rotary cover that covers the upper side of the tilling claw so as to be vertically movable so as to be adjustable in the vertical direction. By adjusting the height position of the rear cover by adjusting the vertical rotation of the rear cover and the vertical adjustment of the leveling body with respect to the vertical direction of the rear cover, it is possible to adjust the height according to the weed growth condition and soil quality in the no-till field. An appropriate seed bed can be formed.

  And according to the invention of claim 3, since the leveling body has a U-shaped or arc-shaped mass collection shape, it is possible to effectively collect the mass to be released to the rear of the tilling nail, The structure of the leveling body itself can be simplified.

  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 employed in which a tilling shaft 22 formed by screwing a plurality of tilling claws (seed claws) 21 radially between the side plates is rotatably supported. 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 that stores seeds such as rice and wheat, a seed pipe (not shown) that supplies seeds in the seed tank 24 toward a sowing part, and a groove cutting blade for forming a sowing groove. 25, and further includes a covering plate 26 for covering the seeding groove, a pressure reducing roller 27 for pressing the upper portion of the seeding groove, and a grounding ring 28.

  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. The non-plowed field S is driven by rotating the tillage claw 21 forwardly rotated (in the direction of 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. In FIG. 3 and FIG. 4, only the sowing position can be partially cultivated.

  Further, the tilling claw 21 radially screwed on the tilling shaft 22 has a vertical blade portion curved in the outer peripheral direction formed continuously from the mounting base in a side view, and a tip portion of the vertical blade portion in the rotation direction. Narrow plowing (about 50 mm wide) shown in FIG. 3 and FIG. 4 by turning the tilling claw 21 configured in this way to the forward rotation. The raised groove D can be formed.

  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 tilling claw 21. The rear cover 32 can be rotated up and down in the direction of the arrow B in the figure with the fulcrum P as the rotation center. The rear cover 32 is configured such that the vertical height position (rotation height position) can be adjusted via a rod 33 connected to a support member 31 a provided on the rotary cover 31.

  Furthermore, 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, so that 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 can be fixed from the lower surface side of the rear cover 32 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 (direction of arrow C shown in FIG. 1). 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. 3, 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 thereof is gradually narrowed, or as shown in FIG. In addition, an arc-shaped mass collecting shape that covers the rear side of the tilling claw 21 and gradually narrows the rear end side thereof is formed, and a side view shape 34a of the leveling body 34 is formed so that the lower side is wide as shown in FIG. Thus, while suppressing the scattering of the clot released to the rear of the tilling claw 21, it is possible to effectively collect the clot and form an appropriate sowing bed F, and the structure of the leveling body 34 itself. Simplification can be achieved, and problems such as the occurrence of power loss due to the resistance of soil attached to the inner wall of the cover and the increase in the weight of the tillage unit 12 can be solved as in the prior art.

  In addition, the removal operation of the soil to which the arc-shaped direction is attached rather than the U-shape as the mass collection shape of the leveling body 34 mentioned above is easy. Further, by configuring the leveling body 34 with an injection-molded product made of a thermoplastic resin such as polyamide (nylon), the weight of the leveling body made of sheet metal is reduced, and the amount of soil adhesion induced by the occurrence of rust is reduced. The removal work of the soil adhering to the leveling body 34 may be facilitated.

  By the way, while removing the sowing unit 16 constituting the partial tillage direct sowing apparatus 11, the tilling claw 21 provided in the tilling unit 12 and the tilling shaft 22 on which the tilling claw 21 is radially screwed are removed in an assembled state, and the rotary The tilling shaft formed by screwing the tilling claws for tillage is replaced in the assembled state, and the rear cover 32 is replaced with the rear cover for rotary tilling, so that the tilling unit 12 constituting the partial tillage direct sowing apparatus 11 is rotary tilled. It can also be used as a device.

The side view of a partial tillage direct sowing apparatus. The partial omission top view of a partial tillage direct sowing apparatus. FIG. 1 is a view taken in the direction of arrow E in FIG. FIG. 1 is a view taken in the direction of arrow E in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Partial tillage direct seeding device 12 Tillage unit 16 Seeding unit 21 Tillage claw 25 Groove cutting blade 31 Rotary cover 32 Rear cover 34 Leveling body D Tillage groove F Seeding floor

Claims (3)

  A tilling unit (12) that is connected via a lifting link mechanism provided at the rear of the machine body and that forms a tilling groove (D) by a tilling claw (21) that is driven to rotate forward, and is attached to the rear of the tilling unit (12). In the partial tillage direct sowing apparatus (11) provided with the sowing unit (16), the soil cultivated and crushed by the tillage claws (21) is collected and the appropriate sowing bed (F) is placed on the tilling groove (D). The partial tillage direct sowing apparatus is characterized in that a leveling body (34) is provided on the rear side of the tillage claw (21).   The leveling body (34) is fixed to the rear end (32) of the rotary cover (31) covering the top of the tillage claw (21) so that the rear cover (32) can be turned up and down so as to be able to advance and retreat. The partial tillage direct sowing apparatus according to claim 1.   The partial tillage direct sowing apparatus according to claim 1 or 2, wherein the leveling body (34) has a U-shaped or arc-shaped mass collection shape.

Images