JP3921149B2 - Agricultural machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agricultural machine that can suppress damage to an elastic cover plate.
[0002]
[Prior art]
Agricultural implements such as conventional upper rotary implements prevent, for example, the upper rotary that performs tilling work while rotating in the upcut direction, and the scattering of the soil that is splashed by the upper rotary in contact with the upper rotary. An elastic cover plate that can be elastically deformed is provided, and both ends of the elastic cover plate in the front-rear direction are fixed.
[0003]
[Problems to be solved by the invention]
However, when the front and rear ends of the elastic cover plate are fixed as in the conventional agricultural machine, for example, when foreign matter such as stone enters between the elastic cover plate and the upper rotary in a field with many stones, etc. There is a problem that the elastic cover plate is easily damaged.
[0004]
This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can suppress the failure | damage of an elastic cover board.
[0005]
[Means for Solving the Problems]
請 Motomeko 1 agricultural machine according includes a work machine body having a cover plate mounting portion rotatably mounted on the machine body, an upper rotary to the tilling while rotating in up-cut direction, the working machine A screen attached to the main body so as to be positioned behind the upper rotary, and an elastically deformable elastic cover plate that prevents scattering of the soil splashed by the upper rotary in contact with the upper rotary. The elastic cover plate has a front end portion fixedly attached to the cover plate mounting portion and a rear end portion attached to the front end side of the screen so as to be movable in the front-rear direction along the screen. at least two connecting pieces are formed in the rear end portion of the front free end of the connecting piece which this is formed by the elastic deformation of the upward Protrude from the screen of the gap upward by the free end cross that the projected are connected by a slidable coupling on the screen in the longitudinal direction, the connector rear ends of the elastic cover plate on the screen It is attached via.
[0006]
The front end of the elastic cover plate is fixedly attached to the cover plate mounting portion, and the rear end is attached to the front end side of the screen so as to be movable in the front-rear direction along the screen. As compared with the case where both ends of the plate in the front-rear direction are fixed, the breakage of the elastic cover plate is suppressed. Further , at least two connecting piece portions are formed at the rear end portion of the elastic cover plate, and the free end portion of the formed connecting piece portion is protruded upward from the gap of the screen by upward elastic deformation, and this protrusion is made. By connecting the free ends to each other with a connector that can slide in the front-rear direction on the screen, the rear end of the elastic cover plate can be appropriately attached to the screen.
[0007]
The farm work machine according to claim 2 is the farm work machine according to claim 1 , further comprising a cover body that covers an upper portion of the upper rotary, and a rear end portion of the elastic cover plate is disposed below the cover body. .
[0008]
Then, for example, as compared with the case where the rear end portion of the elastic cover plate is protruded above the cover body, the size reduction can be achieved and the appearance can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.
[0010]
1 to 3, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is mounted on a rear portion of a tractor that is a traveling vehicle (not shown) so as to be movable up and down via a three-point link mechanism that is an elevator supporting device. An upper rotary working machine (upper rotor) or the like.
[0011]
The farm work machine 1 includes a work machine main body 2 that is attached to a tractor in a longitudinal shape in the left-right direction, for example.
[0012]
The work machine main body 2 has a tractor mounting portion 3 and a front and rear input shaft 4, and also has a rotary mounting portion (chain case and bracket) 5, a screen mounting portion 6 and a cover plate mounting portion 7. Yes.
[0013]
The cover plate attaching portion 7 is elongated in the left-right direction and can be moved up and down while being urged downward by an urging means 9 such as a coil spring. That is, the cover plate attaching portion 7 is fixed to the front side cover plate 11 attached to the front end portion of the rotary attaching portion 5 so as to be pivotable up and down around the pivot shaft 10 in the left-right direction. Further, the rear side cover plate 12 is fixed to the rear end portion of the rotary mounting portion 5.
[0014]
The rotary mounting portion 5 of the work machine body 2 can rotate an upper rotary 15 that performs tilling work while driving and rotating in the upcut direction (rotation direction in which the front side moves upward) with power from the input shaft 4 side. Is attached. The upper rotary 15 includes, for example, a horizontal tilling shaft 16 and a plurality of substantially circular arc-shaped tilling claws 17 fixed to the tilling shaft 16 in a radial manner.
[0015]
Further, the screen mounting portion 6 of the work machine body 2 has a front end portion of a screen 21 having a substantially arc shape (arc shape of about a quarter of the circumference) along the outer periphery of the upper rotary 15. It is fixedly attached so as to be located above and behind 15.
[0016]
The screen 21 guides a large lump of soil in the soil from the upper rotary 15 downward and a small lump in the soil from the upper rotary 15 so that the surface of the field is finished in a two-layer structure where the surface layer is fine and the lower layer is rough. Etc. are passed backwards. As shown in FIG. 4, the screen 21 is composed of, for example, a plurality of rod-like portions 23 each having a substantially arc bar shape and arranged side by side with an equal gap 22 in the left-right direction.
[0017]
Further, a front end portion of a substantially plate-like metal cover body 25 covering the upper rotary 15, that is, the upper portion of the screen 21, is fixedly attached to the screen attachment portion 6. A substantially plate-shaped metal leveling body 26 that performs leveling work is attached to the rear end portion of the cover body 25 via a rotation shaft 27 in the left-right direction so as to be vertically rotatable. The ground pressure of the leveling body 26 can be adjusted by the ground pressure adjusting means 28.
[0018]
On the other hand, the agricultural working machine 1 includes a rubber-made elastically deformable direct contact elastic cover plate (for example, a rubber plate) 31 that is formed in a substantially rectangular plate shape elongated in the left-right direction.
[0019]
This elastic cover plate 31 has a substantially arc surface shape due to its own weight, and is in planar contact with the upper front side that is a part of the outer peripheral edge of the rotating upper rotary 15 (in contact with the tip of the tilling claw 17) Thus, it is possible to prevent the soil splashed up by the upper rotary 15 from scattering upward (see FIG. 2).
[0020]
The elastic cover plate 31 is not always in contact with the outer peripheral edge of the upper rotary 15, but can be brought into contact with and separated from the outer peripheral edge of the upper rotary 15. That is, when a foreign object 40 such as a stone enters between the elastic cover plate 31 and the outer peripheral edge of the rotating upper rotary 15, the elastic cover plate 31 moves in a direction to absorb the force received from the foreign object 40. By this, it will be in the state which left | separated a little from the outer periphery of the rotating upper rotary 15 (refer FIG. 3).
[0021]
The front end portion (lower end portion) of the elastic cover plate 31 is fixedly attached to the cover plate attaching portion 7 at the front lower portion of the work machine body 2 via a fixture 32 such as a bolt. Further, the rear end portion (upper end portion) of the elastic cover plate 31 extends along the screen 21 via, for example, a metal coupling member (fastener) 33 as a fixture on the front end side (upper end side) of the screen 21. The cover body 25 is attached so as to be movable in the front-rear direction, and is disposed below (inward) the cover body 25 so as not to be exposed to the outside.
[0022]
That is, for example, as shown in FIG. 4, for example, two connection piece portions 31 a having a substantially rectangular shape are formed by, for example, three notches in the center of the rear end portion of the elastic cover plate 31, and the formed connection piece portions 31 a are formed. The free end portion (rear end portion) protrudes upward from the different gaps 22 of the screen 21 due to the bending elastic deformation of the entire connecting piece portion 31a, and the two free end portions projecting on the screen 21 By being connected by one connecting tool 33 slidable in the front-rear direction, the rear end portion of the elastic cover plate 31 can be moved in the front-rear direction along the screen 21 via the connecting tool 33 to the front end side of the screen 21. Is attached.
[0023]
Next, the operation of the above embodiment will be described.
[0024]
When cultivating a field such as a field with many stones using the tractor and the farm work machine 1, the farm work machine 1 is supported at the desired height position by the three-point link mechanism of the tractor, and the tractor travels. The farm work machine 1 is moved forward in the field.
[0025]
Then, the plowing work is performed by the upper rotary 15 that receives power from the input shaft 4 side and rotates in the upcut direction, and the leveling work is performed by the leveling body 26 located behind the upper rotary 15, The field surface becomes flat.
[0026]
This field surface portion is finished into a two-layer structure in which the surface layer is fine and the lower layer is rough by the screen action of the screen 21 positioned between the upper rotary 15 and the leveling body 26.
[0027]
Here, during normal operation, the elastic cover plate 31 is placed on the upper front side of the rotating upper rotary 15 by its own weight, as shown in FIG. This prevents contact with the upper rotary 15 and splashes upward of the soil.
[0028]
However, as shown in FIG. 3, when a foreign material 40 such as a stone enters between the elastic cover plate 31 and the tilling claw 17 of the upper rotary 15, the coupling tool 33 slides forward on the screen 21. As a result, the rear end portion of the elastic cover plate 31 moves forward along the screen 21, and the entire elastic cover plate 31 is brought into a non-contact state slightly separated from the rotating upper rotary 15. Note that the rear end portion of the elastic cover plate 31 can move forward until the connector 33 comes into contact with the inclined stopper portion 25a of the cover body 25.
[0029]
The force exerted by the foreign matter 40 on the elastic cover plate 31 is absorbed by the movement of the rear end portion of the elastic cover plate 31, and an excessive force does not act on the elastic cover plate 31. Suppression of damage etc. is achieved. When the foreign matter 40 such as stone disappears between the elastic cover plate 31 and the upper rotary 15, the elastic cover plate 31 returns to the original state shown in FIG.
[0030]
For example, when the foreign matter 40 such as stone is large and the force that the foreign matter 40 exerts on the elastic cover plate 31 cannot be absorbed by the movement of the rear end portion of the elastic cover plate 31 and the elastic deformation of the elastic cover plate 31 itself, When the cover plate attaching portion 7 moves upward against the urging force of the urging means 9, the front end portion of the elastic cover plate 31 moves upward together with the cover plate attaching portion 7, and the front side of the elastic cover plate 31 is moved upward. It will be in a state slightly separated from the rotating upper rotary 15.
[0031]
Thus, according to the agricultural working machine 1 of the embodiment, the front end of the elastic cover plate 31 is fixedly attached to the cover plate attaching portion 7, and the rear end thereof is on the front end side of the screen 21. Attached to the screen 21 so as to be movable in the front-rear direction, when the foreign object 40 enters between the elastic cover plate 31 and the upper rotary 15, the elastic cover plate 31 is slightly separated from the upper rotary 15. For example, as compared with the conventional case where both ends of the elastic cover plate in the front-rear direction are fixed, damage to the elastic cover plate 31 can be suppressed, and the elastic cover plate 31 is easy to move. Adhesion can be suppressed.
[0032]
Further, two connecting piece portions 31a are formed at the rear end portion of the elastic cover plate 31, and the free end portion of the formed connecting piece portion 31a is moved upward from the screen 21 through the gap 22 of the screen 21 by elastic deformation upward. The rear ends of the elastic cover plate 31 can be easily and properly attached to the screen 21 by connecting the protruding free ends to each other with a connecting tool 33 that can slide in the front-rear direction on the screen 21. In addition, for example, soil adhesion to the metal connector 33 can be suppressed.
[0033]
Further, since the rear end portion of the elastic cover plate 31 is disposed below the cover body 25, that is, the rear end portion of the elastic cover plate 31 is disposed between the upper rotary 15 and the cover body 25 without exposing the outside, for example, Compared to the case where the rear end portion of the elastic cover plate 31 is disposed so as to protrude above the cover body 25, it is possible to reduce the size and to improve the appearance.
[0034]
In the meantime, two connecting pieces 31a are formed in the center of the rear end of the elastic cover plate 31 by notches, and the free ends of the two connecting pieces 31a thus formed are connected by a connecting tool 33. For example, at least two, for example, four or eight connecting pieces are formed at the rear end of the elastic cover plate, and a plurality of free ends of the formed connecting pieces are provided. It may be connected by individual connecting tools 33.
[0035]
【The invention's effect】
According to the invention 請 Motomeko 1, the elastic cover plate, the front end portion is fixedly attached to the cover plate mounting portion movably in the front-rear direction along the screen rear end to the front end side of the screen mounting Therefore, for example, damage to the elastic cover plate can be suppressed as compared with a case where both ends in the front-rear direction of the elastic cover plate are fixed. Further , at least two connecting piece portions are formed at the rear end portion of the elastic cover plate, and the free end portion of the formed connecting piece portion is protruded upward from the gap of the screen by upward elastic deformation, and this protrusion is made. By connecting the free ends to each other with a connector that can slide in the front-rear direction on the screen, the rear end of the elastic cover plate can be appropriately attached to the screen.
[0036]
According to the second aspect of the present invention, for example, as compared with the case where the rear end portion of the elastic cover plate is disposed so as to protrude above the cover body, it is possible to reduce the size and improve the appearance.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of an agricultural machine according to the present invention.
FIG. 2 is a side view in which a part of the agricultural working machine is omitted.
FIG. 3 is a side view in which a part of the agricultural working machine is omitted.
FIG. 4 is a plan view of a rear end portion of the elastic cover plate of the agricultural working machine .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Farm machine 2 Work machine main body 7 Cover board attaching part
15 Upper rotary
21 screen
22 gap
25 Cover body
31 Elastic cover plate
31a Connecting piece
33 coupling

Claims (2)

A work machine body having a cover plate mounting portion;
An upper rotary that is rotatably attached to the main body of the work machine and performs tilling work while rotating in the upcut direction,
A screen attached to the work machine body so as to be positioned behind the upper rotary;
An elastically deformable elastic cover plate that prevents scattering of the soil splashed by the upper rotary in a state in contact with the upper rotary,
The elastic cover plate has a front end portion fixedly attached to the cover plate attachment portion, and a rear end portion attached to the front end side of the screen movably in the front-rear direction along the screen,
Said at least two connecting pieces are formed in the rear end portion of the elastic cover plate, protrudes from the gap of the screen by the free end of the connecting piece that the formed elastic deformation upward upwards, freedom and the protruding The ends of the elastic cover plate are attached to the screen via the connector by connecting the ends with a connector that can slide in the front-rear direction on the screen. that agricultural working machine. A cover member for covering the upper side of the upper rotary, agricultural machine according to claim 1, wherein a rear end portion of the elastic cover plate below the cover body is disposed.

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