JPS58146201A - Width control apparatus in cultivating part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention reduces tillage resistance, makes tilling work more suitable, prevents excessive settling during tilling work, maintains a good tilling condition, and reduces tillage width. This invention relates to a width adjustment device in a tilling section that can adjust the width as needed.

Here, tilling resistance in the specification refers to frictional resistance, compression resistance, condensation force, etc. applied to the tilling tube or tilling blade during tilling work.
A general term for adhesion, shear resistance, etc.

Since then, the tilling tubes installed on both sides of the drive case of agricultural power-driven machines such as power tillers and tractors have come in various shapes such as round, square, and hexagonal in cross section. There is. The round-shaped tilling tube could not be used to till the soil at all by itself, which was a major factor in increasing the resistance to tilling. With hexagonal or hexagonal tilling tubes, it is possible to till the soil slightly or to slightly reduce the tilling resistance near each corner, but this does not allow for good tilling work. I couldn't. Furthermore, there was no one that could easily adjust the tilling width while maintaining good tilling conditions.

By the way, tiller-type cultivators, which perform tilling work while traveling, have a small drive source and may be viscous or
In wet soil, the tilling resistance is so great that tilling cannot be done, or the tilling work becomes extremely inefficient. For this reason, reducing tillage resistance and making tilling work more suitable even with a small drive source has been highly desired in the agricultural and agricultural machinery industries, but has been considered technically difficult.

Therefore, the present invention provides a first and a second triangular tilling tube that has a substantially equilateral triangular cross section, each side of which is a large surface, and a small surface that is formed at the corner of the adjacent large surface. The first and second triangular tilling tubes are made continuous in the axial direction, and an angular phase difference of about 60° is created between the first and second triangular tilling tubes so that they are perpendicular to the axial direction. A connecting shaft is provided at the outer end, a connecting hole is bored in the second triangular tilling tube, the connecting shaft is inserted into the connecting hole, and the second triangular tilling tube is connected to the first triangular tilling tube. On the other hand, the width can be adjusted in the axial direction, and a υ blade is attached to the large surface of each of the first and second triangular tilling tubes, or
In the second triangular tilling tube, a triangular joint tube is fixed to the inner end of the second triangular tilling tube, and correspondingly the first triangular tilling tube is fixed to the inner end of the second triangular tilling tube.
A gap is formed in the large surface and small surface of the outer end of the third triangular tilling tube, and the triangular joint tube is fixed so as to be slidable in the axial direction within the gap, and the connection shaft is inserted into the connection hole. A second triangular tilling tube is inserted into the first triangular tilling tube so that its width can be adjusted in the axial direction, and a tilling blade is provided on the large surface of each of the first and second triangular tilling tubes. By installing this on both sides of the transmission case of an agricultural power running machine and cultivating, it will compact the soil near the corner of the large surface and small surface and throw this clod backward. This action significantly reduces tilling resistance, making it easier for agricultural power running machines to move forward, making tilling work extremely efficient, and even with a roughly equilateral triangular cross section, the presence of facets makes tilling extremely difficult. It prevents sinking, improves forward performance, maintains such a good tilling condition, makes it easy to adjust the tilling width, eliminates the above-mentioned drawbacks, and makes the entire structure strong even when made of thin plate material. Can be provided.

The structure will be explained based on the embodiments shown in the drawings.

Reference numeral 1 denotes a triangular tilling tube made of metal, which has a substantially equilateral triangular cross section, and has three large surfaces 1a, la, and la, and a small surface 1b at the corner of the adjacent large surfaces 1a and la. are formed respectively. The cross section of the large surface 81a5-small surface portion 1b may be flat (see Figs. 1 to 4, 6, and 7), or may be slightly bulged in a convex shape (not shown), or may be slightly swollen. It may also be formed in a concave shape. Furthermore, although not shown, the large surface portion 1a is made slightly convex,
The small surface portion 1b may be slightly concave, or vice versa. It is experimentally preferred that the width of the large surface portion 1a is approximately three times or more larger than the width of the small surface portion 1b. The first triangular cultivating tube 1 from the transmission case 10 side, which will be described later, has a through hole 2 oriented in the axial direction at the center of its cross section. The through hole 2
is formed of a pipe (see Figures 3 and 5).

The pipe protrudes from the outer end of the first triangular tilling tube 1 (on the side opposite to the transmission case 10 side) and is formed as a connecting shaft 3 (see FIGS. 3 and 5). Further, the second triangular tilling cylinder 1 from the transmission case 10 side has a connecting hole 4 oriented in the axial direction in the center of its cross section. The connecting hole 4 is formed of a pipe (see FIG. 3).

When attaching the second triangular tilling tube 1 to the first triangular tilling tube 1, an angular phase difference of about 60 degrees inside and outside (approximately 6-50 degrees to about 70 degrees) is required. Axis 3
The connecting hole 4 is inserted through the connecting hole 4 so that the width can be adjusted.

There are two types of embodiments in which the width is adjustable. In the first embodiment, the connecting hole 4 of the second triangular tilling tube 1 is inserted into the connecting shaft 3 of the first triangular tilling tube 1.
It is fixed to a pin 5, a presser bolt, etc. so that the width can be adjusted as appropriate (see Fig. 5). In addition, in the second embodiment, a triangular joint tube 6 whose cross section is the same as that of the triangular tilling tube 1 and slightly smaller in size is attached to the inner end of the second triangular tilling tube 1 (on the transmission case 10 side). ), and correspondingly, a gap 7 is formed in the large surface portion 1a of the first triangular tilling tube 1 (the side end (opposite side to the transmission case 10 side) and the small surface portion Ib) ~ its triangular joint The cylinder 6 is slidable in the axial direction within the cavity 7, and the second
The connecting hole 4 of the triangular cultivating tube 1 is inserted through it and fixed to a pin 5, a presser bolt, etc. so that the width can be adjusted as appropriate (see If, @ in Fig. 3). In the figure, 8 is a sheath-shaped holder, 9 is a tilling blade, which is perpendicular to the axial direction of the triangular tilling tube 1 as a vertical cut part halfway from the mounting base side, and is curved in the orthogonal plane. The cross section on the tip side faces right or left along the axial direction of the triangular tilling tube 1 and is bent approximately horizontally, forming a three-dimensional curved surface as a whole (see Figs. 1 to 3). .

The mounting base of the vertical cut portion of the tilling blade 9 is fixed to the holder 8 by welding or the like, or is provided removably with a bolt naso 1 or the like (see drawing).
The attached triangular tilling tube 1 is referred to as a tilling section. The tilling section is constructed of a tiller, a power running machine for agricultural use such as a rough rafter, whose through-hole 2 is inserted into a tilling shaft 11 protruding from both sides of a transmission case 10 extending below, and is symmetrically fixed with pins 12 or the like. It is provided removably (see Figure 3).

Next, the effects will be explained.

In the invention set forth in claim 1, each surface is formed into a substantially equilateral triangular cross section as a large surface portion 1a, and the adjacent large surface portions 1
The first with small surface portions 1b formed at the corner locations of a and la,
Second triangular tiller 1. 1 are connected to each other in the axial direction, and the first and second triangular tilling cylinders 1.1 are made to have an angular phase difference of about 60° in a plane perpendicular to the axial direction, and A connecting shaft 3 is provided at the outer end of the first triangular tilling tube 1, and a connecting hole 4 is provided in the second triangular tilling tube 1.
is drilled, the connecting shaft 3 is inserted into the connecting hole 4, and the second triangular tilling tube 1 is fixed to the first triangular tilling tube 1 so that its width can be adjusted in the axial direction, By attaching tilling blades 9 to the large surfaces of the first and second triangular tilling tubes 1.1, the tilling resistance can be significantly reduced and the desired tilling width can be achieved in good tilling conditions. be effective. To explain in detail how the tilling resistance is significantly reduced, the triangular shape is the smallest among square cross sections, and the soil rake angle α of the triangular tiller 1 is larger than the end rake angle of tillers with square or hexagonal cross sections. It's also quite small. Here, the soil scooping angle α is defined by the line connecting the center O of the triangular tilling tube 1 and the end of the large surface portion 1a, and the
This refers to the angle between the cross section of a and the outer surface line. Due to this small soil scooping angle α, the end portion of the large surface portion 1a (near the corner between the large surface portion 1a and the small surface portion 1b) plays the role of a tilling blade, and pinches the soil by pushing many soil clods backward. It can be thrown to. Therefore, with conventional round-shaped tilling tubes, the resistance to compress the soil,
The condensation force acts strongly, making the tilling resistance thick, but in the present invention, the tilling blade-like action can significantly reduce the tilling resistance such as the resistance to compress the soil, making it possible to improve the progress of the soil. Can be done. Furthermore, by playing the role of a tilling blade in this way, originally the tilling blade had to be used alone to cut the soil, pick up soil clods, throw it backwards, etc. However, the virtual circle of the triangular tilling tube 1 The inner part has already been tilled, and now only the outer periphery is tilled with the tilling blade 9, and tilling resistance such as cutting resistance can be significantly reduced, and the tilling work with the triangular tilling cylinder 1 and the tilling work with the tilling blade 9 can be reduced. act synergistically to achieve extremely high tillage efficiency. This simple structure with a roughly equilateral triangular cross section reduces tilling resistance and makes tilling work extremely efficient even if the drive source is small or the soil is viscous. We can provide a ground-breaking invention that can be done.

A tillage state with an extremely high value of such tillage efficiency = 10
- By holding and fixing the triangular tilling tube 1 so that its width can be adjusted in the axial direction, it is not possible to achieve the same tillage as the triangular tilling tube 1 only between the triangular tilling tubes 1 and 1, but as a whole. Plowing work to the desired plowing width can be easily performed. In addition, by making the cross section approximately equilateral triangular, the triangular tilling tube 1 is extremely prone to sinking into the soil, but the presence of the small surface portions 1b at each corner prevents it from sinking into the soil. - During tilling work, the tilling part can be prevented from sinking extremely into the soil, can be moved forward in a substantially flat state, and good tillt performance can be obtained. Further, the triangular tilling tube 1 composed of the small surface portion 1b and the large surface portion 1a has many bent corners when viewed in cross section, which increases the section modulus and strengthens the entire structure. Furthermore, the present invention allows good forward movement and tillage even on sandy soil or on diatoms such as volcanic ash without unnecessarily idling.

In addition, in the invention of claim 2, °ζ fixes the triangular joint tube 6 to the inner end of the second triangular tillage/green section 1 in the triangular tilling tube l, 1 of the invention of claim 1. , Correspondingly, a gap U7 is formed in the large face mla small face part 1b of the outer end of the first triangular tilling tube 1, and the triangular joint tube 6 can be slid in the gap 7 in the axial direction. The connecting shaft 3 is inserted into the connecting hole 4, and the second triangular tilling tube 1 is provided so as to be adjustable in width in the axial direction with respect to the first triangular tilling tube 1. By attaching the tilling blades 7 to the large surface portions 1a of the third and second triangular tilling cylinders 1゜1, the tilling state with extremely high tilling efficiency as described above can be maintained.
Plowing work to the desired plowing width can be easily performed. In particular, in the present invention, the first triangular tilling tube 1 and the second triangular tilling tube 1
Since the triangular joint tube 6 exists in the space between the triangular joint tube 6 and the triangular joint tube 6, similar to the above-mentioned triangular tilling tube 1, good tilling with significantly reduced tilling resistance can be achieved, and even if the tilling width is widened. A major feature is that extremely efficient tilling work can be performed over the entire width. Furthermore, the other configurations are the same as the invention described in item 1, and the same effects are achieved.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention symmetrically installed, Fig. 2 is a front view with a part of Fig. 1 in cross section, and Fig. 3 is a front view with a part of the present invention in cross section after adjusting the width of the invention. 4 is a perspective view of essential parts of the present invention, and FIG. 5 is a sectional view of another embodiment of the present invention.
FIG. 6 is an enlarged sectional view of the triangular tilling tube of the present invention, and FIG. 7 is a side view of the present invention. 1...Triangular tilling tube, 1a...Large surface part,
1b...Small surface part, 3...Connection shaft, 4...Connection hole, 6...Triangular joint tube, 7...Gap part 9... Cultivating blade. 13- Figure 4 Figure 5 0 Figure 6 Figure 7 N\-7,゛. / . 1... 7%, 8 9 ・1 = 6-

Claims (2)

[Claims] (1) A first surface having a substantially equilateral triangular cross section, each of which is a large surface, and small surfaces formed at the corners of the adjacent large surfaces.
The first and second triangular tillers are connected to each other in the axial direction, and the angular phase difference between the first and second triangular tillers is about 60° in a plane orthogonal to the axial direction. A connecting shaft is provided at the outer end of the first triangular tilling tube, a connecting hole is bored in the second triangular tilling tube, the connecting shaft is inserted into the connecting hole, and the connecting shaft is inserted into the connecting hole. The first triangular tiller
The width of the tilling section is fixed to the third triangular tilling tube so that its width can be adjusted in the axial direction, and a tilling blade is attached to the large surface of each of the first and second triangular tilling tubes. Regulator. (2) The first and second triangular sections, each of which has a substantially equilateral triangular cross section and each face is a large face part, and a small face part is formed at the corner of the adjacent large face part, are aligned in the axial direction. In addition, the first and second triangular tillers are made to have an angular phase difference of about 60° in the plane perpendicular to the axial direction, and the outer end of the first triangular tiller is A connecting shaft is provided, a connecting hole is bored in the second triangular tilling tube, the triangular joint tube is fixed to the inner end of the second triangular tilling tube, and the first triangular tilling tube is connected to the connecting shaft. The large surface of the outer end of the tiller,
A gap is formed in the facet, the triangular joint tube is fixed in the gap so as to be slidable in the axial direction, the connecting shaft is inserted into the connecting hole, and the second triangular tilling tube is connected to the second triangular tilling tube. Width adjustment in a tilling section characterized in that a first triangular tilling tube is provided so that its width can be adjusted in the axial direction, and a tilling blade is attached to the large surface of each of the first and second triangular tilling tubes. Device