JP3436964B2 - Bottom plow - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom plow,
More specifically, the present invention relates to a bottom plow in which a gap between a cover board provided at an upper end of a mold board and a mold board can be arbitrarily adjusted in a plow device for performing a plowing operation of soil. 2. Description of the Related Art A conventionally known bottom plow is shown in FIG.
As shown in FIG.
2. A plow having a shin member 23 fixed along a front edge of the mold board 22 and a bottom 24 formed by a land side (not shown). The bottom plow 20 is attached to a tow frame. The upper end is attached to the lower end of the fixed beam. Further, the bottom plow 20 is disposed along the upper edge of the mold board 22 with a guide wing-like cover board 25 for the purpose of completely reversing the debris during the plowing operation of the soil. Shin member 23 constituting the bottom
It is attached to the structure. [0004] The cover board 25 is formed into a shape curved along the surface of the mold board 22.
When placed along the upper edge of the mold board 22,
The cover board 25 is mounted so as to cover the inner surface side of the mold board 22 to facilitate the inversion of the inverted debris to the debris groove side. In the above configuration, the bottom plow 2
0, the plowed soil comes upright along the mold board 22 and the mold board 22
Is turned upside down along the curved surface, and when the soil is further raised, the cover board 25 acts to push the debris in the reverse direction in the inversion direction. However, in the conventional bottom plow 20, the shin member 23 and the front end of the cover board 25, and the upper edge of the mold board 22 and the lower edge of the cover board 25 are not connected. Because there is a gap in the side view, for the field environment, grass, straw,
Residues such as wheat stalks, grass, straw, wheat stalks are caught in the gaps during plowing work, which becomes a resistance, due to which the residues call the residue, entangled with each other, and plowing by reversal of debris soil. There were problems such as hindrance and an increase in the traction resistance of the working machine due to the plowing operation. [0007] Further, the mounting relationship between the mold board 22 and the cover board 25 is constant with respect to soil properties and cultivation depth conditions, so that the flow of debris along the surface of the mold board 22 varies depending on soil properties. However, as the cultivation depth becomes deeper, there is a problem that the reversal of the debris is not performed smoothly and the plowing function is deteriorated. SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and it is an object of the present invention to provide a bottom plow cover board and a mold corresponding to soil conditions and plowing conditions during plowing work. It is an object of the present invention to provide a bottom plow that prevents entanglement of the residue by adjusting the gap between the board and the board, and that ensures the plowing by reversing the debris. At least a bottom plow having a cover board attached to an upper edge portion of a mold board, wherein the cover board is bolted to a mounting member provided on the upper edge of the mold board. ,
The mounting member has a bolt hole and an arc-shaped elongated hole, and the cover board is bolted to the bolt hole of the mounting member and the elongated hole, and the bolt is attached to the elongated hole with the bolt of the bolt hole as an axis. It is characterized in that it is mounted so that the rotation direction can be adjusted within a range, and the gap between the cover board and the mold board can be adjusted arbitrarily. According to the present invention, at the upper end of the mold board,
By providing a guide wing-shaped cover board that promotes the reversal of the gravel, by appropriately adjusting the gap between the upper edge of this mold board and the lower edge of the cover board according to the soil quality and cultivation depth conditions When the cultivated soil rises along the mold board, most of the soil is effectively turned over and, of course, the residue existing on the surface of the soil is covered with a cover board. And the mold board. For example, when there is a residue such as grass, straw, wheat stalk, etc. on the surface of the field, the gap between the upper edge of the mold board and the lower edge of the cover board is actively opened, and the plowing depth is increased. When it is deep, the gap is similarly widened. Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a front view of a bottom plow according to the present invention,
FIG. 2 is an exploded view of a cover board mounted on the bottom plow of FIG. 1, and FIG. 3 is an exploded perspective view for explaining an outline of a cover board mounting portion according to the present invention. In the drawing, reference numeral 1 denotes a bottom, the bottom 1 is a mold board 3 for inverting debris having a shear 2 at a lower edge, and a thin member 4 fixed along the front edge of the mold board 3. And a land side (not shown) that receives tillage resistance. The bottom 1 is used for plowing work by being pulled by a tractor, and the bottom 1 is fixed to a lower end of a beam whose end is fixed to a frame constituting a working machine. . In front of the upper end of the mold board 3, a front end of a guide wing-like cover board 6 for promoting the reversal of the debris is provided with a mounting member 7 extending from a bed on the back side of the mold board 3. Is fixed via a bolt 8 so as to be vertically movable. FIG. 3 is an exploded perspective view showing a mounting portion of the cover board 6 according to the present invention. In the front end of the cover board 6, two mounting holes 9a and 9 with a predetermined interval are provided.
b is drilled, and a cover board 6
A bolt hole 10a serving as the center of rotation of the cover board 6 and an arc-shaped elongated hole 10b centered on the bolt hole 10a are formed in correspondence with the mounting holes 9a and 9b. When the cover board 6 is mounted on the mold board 3, the state in which the rear end of the cover board 6 is adjusted in the vertical direction can be fixed. Here, the surface of the cover board 6 is formed into a smoothly curved surface along the surface of the mold board 3, and an arc-shaped notch 6a is formed at the lower edge of the cover board 6. Have been. That is, as shown in the developed view of FIG. 2, the cover board 6 has a notch 6a having a maximum height of 20-3.
When the front end of the cover board 6 is fixed to the front upper end of the mold board 3, the upper end edge of the mold board 3 and the lower end edge of the cover board 6 are cut off so as to be 0 mm. The gap G formed between the parts can be adjusted arbitrarily in accordance with soil conditions and plowing conditions. By fixing a backing plate on the back surface of the cover board 6 or bending the lower edge to the back side in an L shape, the strength of the cover board 6 is increased and wear is reduced. Means such as aiming are applied. Further, the structure of the mounting portion between the mold board 3 and the cover board 6 is not limited to the embodiment of the present invention. It is also possible to take appropriate measures. In the above construction, in the plowing operation with the bottom 1 according to the present invention, the gap between the cover board 6 and the mold board 3 can be properly adjusted according to the soil properties and the plowing conditions. The plowed soil is erected along the mold board 3 and is forcibly turned over by the cover board 6. In particular, when there is a residue such as grass, straw, or wheat stalk on the field surface, the mold board 3 of the bottom plow 1
The gap between the upper edge of the cover board 6 and the lower edge of the cover board 6 can be positively opened, so that residues during plowing work do not get entangled in the cover board 6. Furthermore, according to the present invention, even when the cultivation depth is deep, the gap can be greatly widened and the soil can be reliably turned to the debris groove side. As is apparent from the above description, the bottom plow according to the present invention is at least a bottom plow having a cover board attached to an upper edge portion of a mold board, wherein the cover board is an upper edge of the mold board. The mounting member has a bolt hole and an arc-shaped elongated hole, and the cover board is bolted to the bolt hole and the elongated hole of the mounting member. It is configured so that the direction of rotation between the cover board and the mold board can be adjusted arbitrarily in the tillage direction and the work progress direction by being attached to the bolt hole as an axis around the bolt hole so that the rotation direction can be adjusted in a range. A guide wing-shaped carver board that promotes reversal of the debris is attached to an upper edge of the mold board. It is possible to adjust the posture in the rotation direction along the long hole which is the guide hole around the axis of the bolt etc., so that the residue etc. existing on the surface of the debris can be removed by the cover board and the mold board. The clogging does not hinder the reversal of the debris, and the position of the coverboard can be adjusted according to the type of residue, cultivation depth, and soil quality, making it possible to work efficiently and very convenient It is.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a bottom plow according to the present invention. FIG. 2 is a development view of a cover board mounted on the bottom plow of FIG. 1; FIG. 3 is an exploded perspective view showing a mounting portion of a cover board according to the present invention. FIG. 4 is a front view of a bottom plow having a conventional structure. [Description of Signs] 1 Bottom 2 Shear 3 Mold board 4 Thin member 6 Cover board 7 Mounting member 8 Bolt

Claims (1)

(57) Claims At least in a bottom plow provided with a cover board attached to an upper edge portion of a mold board, the cover board is bolted to an attachment member provided on an upper edge of the mold board. The mounting member has a bolt hole and an arc-shaped long hole, and the cover board is bolted to the bolt hole and the long hole of the mounting member, with the bolt in the bolt hole as an axis. A bottom plow, wherein the bottom plow is configured to be attached to the elongated hole so as to be adjustable in a rotation direction within a range so that a gap between the cover board and the mold board can be arbitrarily adjusted.