JPH07155001A - Bottom plow device - Google Patents

Abstract

PURPOSE:To reduce the draft by preventing the landside abrasion caused by plowing and reducing the adhesion of gravel soil to the landside. CONSTITUTION:The bottom plow 1 comprises shear 2, moldboards 3, core 4 which is fixed to the moldboard along its front edge and supports the back side of the moldboard and landside 5 receiving the plowing resistance where an extender is formed on the opposite side of the core as it extends in the opposite direction to that the core is turning, as the turning of the extender is gradually increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom plow device, and more particularly, to preventing abrasion of the side surface of a bed constituent member and preventing soil from adhering to the side surface of the bed and the inside thereof during plowing work in a field. The bottom plow device.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, a bottom plow device used for reversing tillage in a field has a bottom 21 having a sheer 21, and a mold board 22 having the sheer 21 fixed to a lower end edge thereof. Further, it is constituted by the land side 23 that bears the plowing reaction force generated in the bottom 20. The bottom 20 constitutes a so-called plow device in which a beam 25 having a lower end fixed to a bed 24 is fixed to a frame (not shown) constituting a working machine at an upper end thereof.

In the conventional tillage reversal work using the bottom 20 as described above, when the cultivated gravel soil stands up along the mold board 22, the gravel soil is moved to the gravel groove side by the mold board 22. Can be inverted. Most of the plowing resistance received by the sheer 21 and the mold board 22 during the reversal of plowing, the reverse reversal resistance in the vertical plane, and the skidding resistance when reversing the gravel soil are along the gravel wall from the tip of the sheer 21. The work posture of the entire bottom is maintained by being loaded by the land side 23 that extends rearward.

[0004]

In such a bottom plow device, the side surface of the land side 23 moves in close contact with the wall of the grave groove while receiving pressure during the reversal operation of plowing.
Naturally, the side surface of the bed on the side of the gravel groove, including the land side, is subject to large friction and wear, and further, the space behind the mold board, in other words, the inside space of the bed is clogged with soil. However, when it overhangs the gravel wall side and covers the land side, it becomes a resistance and there is a problem that the loss of the traction force of the tractor is increased.

Therefore, an object of the present invention is to prevent abrasion of the side surfaces of the land side and the constituent members of the bed and the adhesion of soil during the plowing work.

In order to achieve the above-mentioned object, the present invention provides a sheer, a mold board, a thin member to which a front end side edge of the mold board is fixed, and a land which receives a lateral reaction force during a plowing operation. In a bottom plow device having a bottom configured of sides, as the side edge on the anti-inversion side of the thin member moves from the lower end toward the upper end toward the sheer side, the anti-inversion side of the gravel from the land side surface in plan view. It is characterized in that an overhanging portion that is overhanging is formed.

[0007]

According to the present invention, since the overhanging portion is formed on the front end side edge of the mold board overhanging the anti-inversion side from the land side surface of the bottom plow device, the upper edge of the gravel wall on the uncultivated land side is ground. The area where the bed side surface and the land side surface come into contact with the gravel wall is small, the adhesion of soil is reduced, and part of the gravel wall does not collapse and fall into the gravel groove.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings of FIGS.

In these drawings, reference numeral 1 indicates a bottom, which is along a sheer 2 and a mold board 3 for guiding the reversal of the gravel excavated by the sheer 2, and further along the front edge of the mold board 3. It is formed by a thin member 4 located at a position and a land side 5 that receives lateral plowing resistance.

These members are attached to the bed 6 to form a bottom 1, and the bottom 1 constitutes a bottom plow device towed 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 work and for obtaining the straightness of the bottom plow device, and the tip end portion is fixed to the rear side of the thin member 4 to which the front end side edge of the mold board 3 is fixed. And the rear end of the support member 7 has an end fixed to the back surface of the mold board 3.
The ends of are fixed.

At the side edge 4A extending from the sheer 2 to the cover board, the thin member 4 is formed with an overhanging portion 4B at an intermediate portion thereof toward the groove side.

This overhanging edge 4B extends beyond the gravel groove wall from the vertical end V of the sheer 2 and further on the vertical surface V including the land side to the uncultivated land side, and a part of the gravel wall in the tillage reversal work. Can be cut.

That is, during the plowing work, the overhanging portion 4 of the edge of the thin member 4 is drawn from the side surface of the land side 5 on the side of the groove.
Since B is positioned outside by m, the contact area between the land side 5 and the grave wall is small because the upper edge of the grave wall is cut even if the side surface of the land side 5 is in close contact with the grave wall. Therefore, the adhesion of soil on the side surface of the land is not reduced as much as possible.

Therefore, according to the present invention, the overhanging portion 4B excavates the gravel wall of the gravel groove so that the depth (height) of the vertical portion of the groove becomes shallow (low) at the wall end portion, and the landside 5
The entire side surface of the machine moves without sticking to the gravel wall, the adhesion of soil is extremely small, and the traction resistance is not increased,
This suppresses wear of the land side 5.

By selecting the shape of the overhanging portion 4B, the shape of the gravel wall, in other words, the sectional shape such as the inclination of the gravel wall, can be arbitrarily selected.

[0017]

As is apparent from the above description, in the bottom plow device according to the present invention, the overhanging portion that extends to the uncultivated land side from the gravel wall is formed in the middle portion of the front side edge of the thin member that is the bottom constituent member. Since the overhanging part cuts the upper edge of the gravel wall, it prevents some gravel from sticking to the landside and increasing the resistance when towing, and also prevents the occurrence of wear on the landside. In addition, the traction resistance during work can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of 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 apparatus including a bed.

FIG. 5 is a side view showing a conventional bottom plow device.

[Explanation of symbols]

 1 Bottom Plow 2 Shear 3 Mold Board 4 Thin Member 4A Side Edge 4B Overhang 5 Landside 6 Bed Component 7 Support Member

Claims (1)

[Claims] 1. A bottom plow device provided with a bottom comprising a sheer, a mold board, a thin member to which a front end side edge of the mold board is fixed, and a land side that receives a lateral reaction force during a plowing operation. As the side edge on the anti-inversion side of the thin member moves from the lower end toward the sheer nearer to the upper edge of the thin member, a protruding portion is formed extending from the land side surface in plan view to the anti-inversion side of the gravel. A characteristic bottom plow device.