JP2010068761A - Agricultural implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural implement capable of performing soil-drawing work from the edge of a furrow. <P>SOLUTION: This agricultural implement is equipped with a second soil-leveling body 46 having a working surface 48 at its lower surface, becoming a soil-leveling working state having the working surface 48 positioned in a horizontal state on a soil-leveling working time, and becoming a soil-drawing working state having the working surface 48 positioned in a standing state on a soil-drawing time. At the end part in the left and right direction of the second soil-leveling body 46, an extended soil-leveling body 51 is installed as rotatable through a rotary central axis 52 having an inclined state as high in front and low in rear. The extended soil-leveling body 51 has an almost horizontal extended working surface 53 at its lower surface to the rotary central axis 52 by a side view. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an agricultural machine that can perform earthing work from the shore.

  Conventionally, for example, agricultural machines shown in FIGS. 10 and 11 are known (see, for example, Patent Document 1).

This conventional agricultural machine has a work surface 1 on the lower surface, and when the leveling work is performed (for example, at the time of scraping work), the work surface 1 is in a leveling work state in which the work surface 1 is positioned horizontally. A ground leveling body (center rake) 2 that is in a state of earthing work and a leveling body 2 that is rotatably provided via a rotation center shaft 3 in the front-rear direction and has an extended work surface 5 on the lower surface. Rotating approximately 180 degrees in one direction around the central axis 3 results in an unfolding work state projecting outward from the leveling body 2, rotating approximately 180 degrees in the other direction around the rotating central axis 3. Is provided with an extended leveling body (extended rake) 4 that is placed on the leveling body 2 and is in a folded non-working state.
Japanese Utility Model Publication No. 62-91909

  However, in the above conventional farm work machine, when the leveling body in the earthing work state is brought close to the fence and the earthing work is attempted from the shore, the extended leveling body in the non-folding state is damaged by hitting the concrete fence. Or may pierce the heel and hurt the heel. For this reason, it has been necessary to perform earthing work from a position away from the fence by a predetermined distance so that the extended leveling body in the folding non-working state and the fence do not interfere with each other.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform earthing work from the edge.

  The farm work machine according to claim 1 has a work surface on a lower surface, and is in a leveling work state in which the work surface is positioned horizontally during leveling work, and the earthing work in which the work surface is positioned upright during earthing work. A leveling body that is in a state, and is provided in the leveling body so as to be rotatable through a tilted rotation center axis that is front-to-back and low, and by rotating in one direction around the rotation center axis, An extended leveling body that is in an unfolded working state that protrudes outward from the leveling body, and that is in a non-folding working state located on the leveling body by rotating in the other direction around the rotation center axis. The extended leveling body has an extended work surface on the lower surface that is substantially parallel to the rotation center axis in a side view.

  The farm machine according to claim 2 is the farm machine according to claim 1, wherein the rear end of the extended work surface of the extended leveling body is located in front of the rear end of the work surface of the leveling body in a side view.

  According to the first aspect of the present invention, the extended leveling body is provided on the leveling body so as to be rotatable via a tilted rotation center axis that is front-to-back and low, and the extension leveling body is viewed from the side of the rotation center axis. Therefore, it is possible to bring the leveling body in the earthing work state closer to the dredging, and the earthing work can be performed from the edge of the dredge as compared with the conventional arrangement.

  According to the invention according to claim 2, since the rear end of the extension work surface of the extended leveling body is located in front of the rear end of the work surface of the leveling body in a side view, the extension work surface is damaged during the earthing work. It can be suppressed and durability can be improved.

  An embodiment of an agricultural machine according to the present invention will be described with reference to FIGS.

  1 and 2, reference numeral 11 denotes an agricultural machine. The agricultural machine 11 is connected to a rear portion of a tractor, for example, a traveling vehicle capable of traveling in an agricultural field, and moves forward in an advancing field such as a paddy field by traveling of the tractor ( This is a scraper that selectively performs leveling work (scraping work) and earthing work while moving in the direction of the arrow in the figure.

  FIG. 2 shows a state where the farm work machine 11 is supported by a stand 12 with casters for supporting a pair of left and right work machines when not working. Each stand 12 includes a stand body 13 and front and rear casters 14 attached to the stand body 13.

  The farm work machine 11 includes a machine body 16 detachably connected to a three-point link portion (work machine lifting device) of the tractor.

  The machine body 16 has a main frame portion 17 such as a substantially cylindrical frame pipe that is longitudinal in the left-right direction, and a gear box portion 18 is provided at the center in the longitudinal direction of the main frame portion 17. An input shaft 19 in a substantially front-rear direction is rotatably provided in the gear box portion 18 via a bearing (not shown), and the front end side of the input shaft 19 is connected to the PTO shaft of the tractor via a universal joint, a transmission shaft, and the like. Connected. A transmission shaft (not shown) is connected to the rear end side of the input shaft 19 via a bevel gear or the like, and this transmission shaft is rotatably disposed in the main frame portion 17.

  In addition, a three-point connecting portion 20 that is a traveling vehicle connecting portion projects forward from the main frame portion 17, and this three-point connecting portion 20 is connected to the three-point link portion of the tractor. The three-point connecting portion 20 is composed of a top mast 21, a lower arm 22, and the like.

  Further, an upper portion of a chain case portion 23 which is a slightly long and box-shaped transmission case portion is attached to the left end portion which is one end portion in the longitudinal direction of the main frame portion 17, and the chain case portion 23 has an upper portion attached thereto. A chain and a sprocket (not shown) that receive power from a transmission shaft in the main frame portion 17 are disposed. On the other hand, an upper portion of a bracket portion 24 that is a plate-like support frame portion that is slightly longer in the vertical direction is attached to the right end portion that is the other end portion in the longitudinal direction of the main frame portion 17.

  Between the lower part of the chain case part 23 and the lower part of the bracket part 24, which are spaced apart from each other, there is rotatably provided a rotary type tiller 31 that performs the tilling work while rotating in a predetermined direction. The cultivating body 31 includes a cultivating shaft 32 that is a horizontal rotating shaft that receives power from the chain in the chain case portion 23 and rotates, and a plurality of cultivating bodies 31 that are attached to the cultivating shaft 32 and rotate together with the cultivating shaft 32 to perform the cultivating work. The tillage claw 33 is provided. The tilling shaft 32 is rotatably supported at the lower end of the chain case portion 23 at the left end, which is one end in the axial direction, and is rotatably supported at the lower portion of the bracket portion 24, at the other end in the axial direction. ing.

  Further, the upper part of the cultivating body 31 is covered with an upper cover part 35, and the left and right side parts of the cultivating body 31 are covered with left and right side cover parts 36.

  At the rear end of the upper cover 35 of the machine body 16 is a substantially plate-shaped first leveling body (leveling plate) 41 that performs leveling work (plowing work) and earthing work behind the tilling body 31. It is provided so as to be rotatable in the vertical direction around the portion 45. That is, the front end portion of the first leveling body 41 is rotatably attached to the rear end portion of the upper cover portion 35 via the rubber elastic plate 42. The first leveling body 41 includes a substantially plate-shaped leveling body main body 43, side plate parts 44 provided at both ends in the left-right direction of the leveling body main body 43, and outward from the front end of each side plate part 44. The shaft portion 45 protrudes in the left-right direction, and the shaft portion 45 is rotatably supported by the side cover portion 36.

  In addition, at the rear end portion of the first leveling body 41, a second leveling body, which is a substantially plate-shaped leveling body that performs leveling work (scraping work) and earthing work together with the first leveling body 41 behind the cultivating body 31. A (center rake) 46 is provided so as to be pivotable in the vertical direction about a shaft portion 47 in the horizontal direction. The second leveling body 46 has a work surface 48 on the lower surface, and a rear end portion of the work surface 48 is formed with a notch 49 having a substantially triangular shape in plan view arranged at equal intervals in the left-right direction.

  Further, the second leveling body 46 and the machine body 16 are connected by the leveling body setting means 50, and the leveling body setting means 50 determines whether the work state of the first leveling body 41 and the second leveling body 46 is the leveling work state. It can be selectively set to the earthing work state.

  At the time of leveling work (at the time of skimming work), the first leveling body 41 becomes a leveling work state (powdering work state) that can rotate in the vertical direction around the shaft portion 45 with respect to the machine body 16. The second leveling body 46 is rotatable up and down around the shaft 47 with respect to the first leveling body 41, and the leveling work state in which the work surface 48 is positioned horizontally along the field scene ( The ground leveling work, that is, the leveling work to flatten the field scene, is performed (see FIG. 3).

  Further, during the earthing work, the first leveling body 41 becomes the earthing work fixed to the airframe 16 and performs the earthing work, and the second leveling body 46 is fixed to the first leveling body 41, that is, the first leveling work. One earth leveling body 41 is fixed to the machine body 16 and the work surface 48 is in an earthing work state in which the work surface 48 stands upright in an inclined posture that is rearwardly lowered with respect to the field scene. reference).

  On the other hand, as shown in FIGS. 1 and 3, a substantially plate-like extended leveling body (extended rake) 51 is inclined at a front, a rear, and a low level in a side view, at both left and right ends of the second leveling body 46. It is provided so as to be able to rotate via a rotation center shaft 52 that is a shaft portion.

  The extended leveling body 51 is deployed to project outward from the left and right end portions of the second leveling body 46 by rotating approximately 180 degrees in one direction (opening direction) about the rotation center axis 52. It becomes a state, and it will be in the folding non-working state located on the 2nd leveling body 46 by rotation about 180 degree | times to the other direction (closing direction) centering on the rotation center axis | shaft 52.

  Further, the extended leveling body 51 is provided with an extension work surface 53 which is always substantially parallel (including parallel in a strict sense) in a side view with the rotation center shaft 52 and located close to the rotation center shaft 52. Have. When viewed from the side, the rotation center shaft 52 is positioned in a slanted shape with a front height and a low height when the second leveling body 46 is in the leveling work state, and is positioned vertically when the second leveling body 46 is in the earthing work state. In this case, when the rotation center axis 52 is positioned vertically, in addition to being positioned vertically in a strict sense, there is a case where it is positioned in a substantially vertical shape that is tilted forward or backward with respect to the vertical direction. included.

  The angle α formed by the work surface 48 of the second leveling body 46 and the extended work surface 53 of the extended leveling body 51 is, for example, 5 to 30 degrees, preferably 10 degrees.

  Further, the extended leveling body 51 includes a main body plate portion 55, a front plate portion 56 projecting obliquely upward from the front end portion of the main body plate portion 55 in the expanded work state of the extended leveling body 51, and the main body plate portion 55. And a pair of mounting plate portions 57 erected on the upper surface. The lower surface of the main body plate portion 55 serves as an extended work surface 53. Further, the mounting plate portion 57 is attached to the end portion in the axial direction of the rotation center shaft 52 held by the substantially U-shaped mounting portion 58 of the second leveling body 46. Further, for example, although not shown, an elastic body such as a coil spring is provided to hold the extended leveling body 51 in the unfolded working state and the folded non-working state.

  The extended leveling body 51 is in the unfolded state during the leveling work (see FIG. 3), and in the non-folding state during the earthing work, is stored behind the second leveling body 46. (See FIG. 4). During this earthing work, the extended work surface 53 of the extended leveling body 51 is positioned substantially parallel to the vertical rotation center shaft 52, and the amount of rearward protrusion from the second leveling body 46 is minimized. .

  Next, the operation and the like of the farm work machine 11 will be described.

  When leveling work is performed using the farm work machine 11, the first leveling body 41 and the second leveling body 46 are set to the leveling work state, and the left and right extended leveling bodies 51 are set to the unfolding work state. In this state, when the agricultural working machine 11 is moved forward by the traveling of the tractor, the cultivating body 31 performs the cultivating work. Behind the cultivating body 31, the first leveling body 41, the second leveling body 46, and the extension The leveling work is performed by rotating the leveling body 51 in the vertical direction so as to follow the field scene.

  In addition, when performing the earthing work using the agricultural working machine 11, the first leveling body 41 and the second leveling body 46 are set to the earthing work state, and the left and right extended leveling bodies 51 are set to the folding non-working state. Set.

  In this state, as shown in FIG. 4, the farm work machine 11 is lowered by the operation of the three-point link portion of the tractor, and the upright second leveling body 46 is brought close to the ridge in the earthing work state. The soil is moved on the work surface 48 of the second leveling body 46, and the earthing work is started from the edge.

  And according to such a farming machine 11, the extended leveling body 51 is provided in the left-right direction edge part of the 2nd leveling body 46 so that rotation is possible via the rotation center axis | shaft 52 of the front, rear, and low inclination. Since the extended leveling body 51 has an extended work surface 53 on the lower surface that is substantially parallel to the inclined rotation center shaft 52 in a side view, the second leveling in the earthing work state as compared with the conventional structure. It becomes possible to bring the body 46 closer to the fence, and the earthing work can be performed from the edge. Therefore, since the second leveling body 46 in the earthing work state can be pulled without leaving the soil at the corner of the reed at the time of the earthing work, the field can be used effectively and water can be distributed to the whole field. In addition, it is possible to appropriately avoid the extended leveling body 51 in the folding non-working state from interfering with the reed, and durability is improved.

  Further, the rotation center shaft 52, which is the rotation center of the extended leveling body 51, is positioned in a slanted shape when the second leveling body 46 is in the leveling operation state, and is vertically inclined when the second leveling body 46 is in the earthing operation state. Therefore, when the second leveling body 46 is in the earthing work state, the extended work surface 53 of the extended leveling body 51 is also positioned vertically along the vertical surface, and the second leveling body in the earthing work state is located. It is possible to bring 46 closer to the fence, so that earthing work can be performed reliably from the edge.

  In the embodiment described above, the rear end of the extended work surface 53 of the extended leveling body 51 in the unfolded work state is the rear end of the work surface 48 of the second leveling body 46 in the leveled work state as shown in FIG. However, as shown in FIG. 6, for example, as shown in FIG. 6, the rear end of the extended leveling body 51 in the unfolded working state 51 is the working surface of the second leveling body 46 in the leveling working state. It may be configured to be positioned forward by a distance L from the rear end of 48.

  And in this structure, as shown in FIG. 7, the lower end of the extension work surface 53 of the extension leveling body 51 of the folding non-working state is the work surface of the second leveling body 46 of the earthing work state, as shown in FIG. Since it is located at a position higher than the lower end of 48 by a distance H, it is possible to prevent a lump or stone from hitting the lower end of the extension work surface 53 during the earthing work, and thus the lower end of the extension work surface 53 during the earthing work. Damage can be suppressed, and durability can be further improved.

  Further, for example, those shown in FIGS. 8 and 9 also have the rear end of the extended work surface 53 of the extended leveling body 51 in the unfolded working state in side view from the rear end of the work surface 48 of the second leveling body 46 in the leveled work state. It is located forward by a distance L, and when the second leveling body 46 is in a leveling operation state when the second leveling body 46 is in a leveling work state, the rotation center shaft 52 is vertically inclined when in a state of earthing work. Therefore, the same effects as those shown in FIGS. 6 and 7 can be obtained.

  Each of the above embodiments can also be applied to a three-fold foldable agricultural working machine that includes a central working unit and left and right working units that can rotate about 180 degrees with respect to the central working unit.

Moreover, it is not limited to the structure which has the 1st leveling body 41 and the 2nd leveling body (leveling body) 46, For example, although not shown in figure, it does not have the 1st leveling body 41,
A configuration in which the second leveling body (leveling body) 46 is provided in the machine body 16 via the elastic plate 42 or the like may be used.

It is a top view of the agricultural working machine which concerns on one embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a side view of the 2nd leveling body at the time of leveling work of an agricultural working machine same as the above, and an extended leveling body. It is a side view of the 2nd leveling body at the time of the soil evacuation work of an agricultural working machine same as the above, and an extended leveling body. It is a top view of a 2nd leveling body and an extension leveling body same as the above. It is a side view of the 2nd leveling body at the time of leveling work of the agricultural working machine concerning other embodiments of the present invention, and an extension leveling body. It is a side view of the 2nd leveling body at the time of the soil evacuation work of an agricultural working machine same as the above, and an extended leveling body. It is a side view of the 2nd leveling body at the time of leveling work of the agricultural working machine concerning further another embodiment of the present invention, and an extension leveling body. It is a side view of the 2nd leveling body at the time of the soil evacuation work of an agricultural working machine same as the above, and an extended leveling body. It is a side view of the leveling body at the time of the conventional leveling work, and an extended leveling body. It is a side view of the leveling body at the time of the conventional earthing work, and an extended leveling body.

Explanation of symbols

11 Agricultural machines
46 2nd leveling body which is leveling body
48 Work surface
51 Extended leveling body
52 Center of rotation
53 Extended work surface

Claims (2)

A leveling body having a work surface on the lower surface, and in a leveling work state in which the work surface is positioned horizontally during leveling work, and in a earthing work state in which the work surface is positioned in an upright state during earthing work;
This leveling body is provided so as to be able to rotate via a tilted rotation center axis that is front and rear and low, and is turned outward from the leveling body by rotating in one direction around the rotation center axis. And an extended leveling body that is in a non-folding working state located on the leveling body by rotating in the other direction around the rotation center axis.
The extended leveling body has an extended work surface on a lower surface that is substantially parallel to the rotation center axis in a side view. The agricultural work machine according to claim 1, wherein the rear end of the extended work surface of the extended leveling body is located in front of the rear end of the work surface of the leveling body in a side view.

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