JP3436963B2 - Bottom plow device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom plow device, and more particularly, to a method for preventing a side surface of a bed component from being worn during plowing work in a field, and a side surface of the bed. The present invention relates to a bottom plow device that prevents soil from adhering to the inside thereof. 2. Description of the Related Art Generally, as shown in FIG. 5, a bottom plow device used for plowing and reversing work in a field has a bottom 20 which is a shear 21 and which is fixed to a lower edge. It is constituted by a mold board 22 and a land side 23 that bears the plowing reaction force generated on the bottom 20. The bottom 20 has a beam 25 having a lower end fixed to the bed 24 and a frame (not shown) constituting a working machine, and an upper end thereof is fixed to form a so-called plow device. In the above-described conventional tillage reversing operation using the bottom 20, when the plowed soil comes upright along the mold board 22, the mould is moved by the mold board 22 to the debris groove side. Inverted. Most of the plowing resistance of the sheer 21 and the mold board 22 and the like during the tillage inversion work, the inversion resistance to the rear in the vertical plane, and the sideslip resistance at the time of the inversion of the debris are from the tip of the shea 21 along the debris wall. The work posture of the entire bottom is maintained by the land side 23 extending rearward. [0004] In such a bottom plow device, the side surface of the land side 23 moves while receiving pressure in close contact with the wall of the debris groove during the plowing reverse operation.
It is natural that the side of the debris groove side of the bed including the land side is subjected to great friction and wears, and furthermore, soil is clogged in the space behind the mold board, in other words, the inner space of the bed. However, when this overhangs the debris wall and covers the land side, it becomes a resistance, causing a problem of increasing the loss of traction force of the tractor. Accordingly, an object of the present invention is to prevent abrasion of the land side and side surfaces of the constituent members of the bed during plowing work and to prevent soil from adhering. In order to achieve the above-mentioned object, a sheer, a mold board, a thin member to which a front edge of the mold board is fixed, and a land side for receiving a lateral reaction force during plowing work are provided. In the bottom plow device, the thin member does not exist at the end near the shear, but gradually increases from near the upper edge of the plowing depth given to the bottom toward the upper end, and furthermore, the reversal of the debris It is characterized by comprising a projecting portion projecting from the land side toward the side opposite to the side. According to the present invention, the mold board is not located at the front end side edge, but gradually widens in the width direction toward the upper end, and the direction of extension of the largest overhang is greater than that of the land side. Because of the uncultivated land side, the upper edge of the gravel wall will be shaved during tillage work, and there will be less adhesion of soil on the bed side and landside side, and a part of the gravel wall will collapse. It does not fall into the groove. An embodiment of the present invention will be described below with reference to FIGS. In these figures, reference numeral 1 denotes a bottom, and the bottom 1 is formed along a shear 2, a mold board 3 for guiding the reversal of the excavated soil by the shear 2, and further along a front edge of the mold board 3. And a land side 5 which receives a lateral plowing resistance. [0010] These members are attached to the bed 6 to form a bottom 1, and the bottom 1 constitutes a bottom plow device pulled by a tractor. The tow frame is fixed by a beam (not shown). The land side 5 of the bottom 1 is
This is for receiving the lateral reaction force generated during the plowing operation and for obtaining the straightness of the bottom plow device, and the front end thereof is fixed to the rear side of the thin member 4 to which the front edge of the mold board 3 is fixed. A support member 7 having an end fixed to the back surface of the mold board 3 is provided at the rear end.
End is fixed. The thin member 4 has a side edge 4A extending from the sheer 2 to the cover board, and a projecting portion 4B formed at an intermediate portion thereof toward the groove. The overhanging edge 4B extends beyond the vertical surface V including the land side and beyond the gravel groove wall to the uncultivated land side, and a part of the gravel wall at the time of the plowing reverse operation. Can be cut. That is, during the plowing operation, the overhanging portion 4 of the edge of the thin member 4 is located from the side surface of the land side 5 on the debris groove side.
Since B is positioned outside by m, even if the side surface of the land side 5 comes into close contact with the gravel wall, the upper edge of the gravel wall is cut, so that the contact area between the land side 5 and the gravel wall is small. Therefore, the adhesion of soil to the land side surface is not reduced as much as possible. Therefore, according to the present invention, the debris wall of the debris groove is excavated by the overhang portion 4B, and the depth (height) of the vertical portion of the groove becomes shallow (low) at the edge of the wall, so that the land side 5
The entire side of the wing moves without sticking to the debris wall, the adhesion of soil is extremely small, and the traction resistance does not increase,
Thereby, wear of the land side 5 is suppressed. Further, by selecting the shape of the overhang portion 4B, the shape of the gravel wall, in other words, the cross-sectional shape such as the inclination of the gravel wall can be arbitrarily selected. As is apparent from the above description, in the bottom plow device according to the present invention, the thin member does not exist at the end near the shear, but gradually increases from the end to the upper end. In addition to the above, the upper edge of the debris wall is cut off in plowing work because the upper portion of the debris wall is shaved in the plowing operation because the overhanging portion protrudes from the land side toward the side opposite to the reversal side of the debris. The soil does not adhere to the lands and the side of the land, the part of the gravel wall does not collapse and falls into the gravel groove, and the traction resistance does not increase during the work, and the work goes straight. The effect is that the property can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a bottom plow device according to the present invention with a bed member omitted. FIG. 2 is a left side view of FIG. FIG. 3 is a rear view of FIG. 1; FIG. 4 is an exploded perspective view of a bottom plow device including a bed. FIG. 5 is a side view showing a conventional bottom plow device. [Description of Signs] 1 Bottom plow 2 Shear 3 Mold board 4 Thin member 4A Side edge 4B Overhang 5 Landside 6 Bed component 7 Supporting member

Claims (1)

(57) [Claims 1] A shear, a mold board, a thin member to which a front edge of the mold board is fixed, and a land side for receiving a lateral reaction force during plowing work. In the bottom plow device, the thin member does not exist at the end near the shear, but gradually increases from near the upper end portion of the plowing depth of the bottom toward the upper end portion, and furthermore, with the inverted side of the debris. Is a bottom plow device comprising a projecting portion projecting from the land side toward the opposite side.